CN113531862A - Frequency conversion fluorine pump air conditioner control method, device, electronic equipment and medium - Google Patents

Abstract

The application discloses a control method and device for a variable-frequency fluorine pump air conditioner, electronic equipment and a medium. The method comprises the following steps: determining a current working mode of the variable frequency air conditioner according to the current outdoor temperature; confirming the total heat transfer temperature difference according to the current outdoor temperature, the information of the target device and/or the system load rate; determining a working device corresponding to the current working mode; the working devices of the variable frequency air conditioner are regulated and controlled by taking the total heat transfer temperature difference as a target, so that the variable frequency air conditioner system can be controlled to operate in different working modes at different outdoor temperatures and operate at higher energy efficiency at different load factors, and the energy-saving operation of the variable frequency air conditioner system is realized.

Description

Variable-frequency fluorine pump air conditioner control method and device, electronic equipment and medium

Technical Field

The invention relates to the technical field of air conditioners, in particular to a control method and device of a variable-frequency fluorine pump air conditioner, electronic equipment and a medium.

Background

With the promotion and promotion of a series of informatization projects such as ' internet + ' big data application ', the scale and the quantity of data centers are rapidly developed and become power utilization consumers of an information society. In order to ensure efficient and reliable operation of the data center, heat generated by the servers of the data center during operation needs to be rapidly exhausted. In order to reduce the energy consumption of the data center and reasonably allocate social resources, the refrigeration system of the data center needs to be optimized.

The fluorine pump technology is gradually applied to the field of data center machine room air conditioners, and a new direction and thought are provided for energy conservation of a data center variable frequency air conditioning system. How to make the system operate at the lowest energy consumption under the current load becomes the central importance of research. At present, the frequency conversion fluorine pump air conditioner can operate in a refrigeration mode, a mixing mode and a fluorine pump heat pipe mode, wherein a compressor of the frequency conversion fluorine pump air conditioner and a refrigerant pump operate together, the mode is called as the mixed mode or the composite mode, certain defects still exist in the aspect of control, energy consumption is high, and meanwhile, the fluorine pump is started to operate in the mixed mode, so that the phenomenon of energy consumption increase is caused, namely, an energy-saving optimization space still exists under different modes and partial load rates.

Disclosure of Invention

The application provides a control method and device for a variable-frequency fluorine pump air conditioner, electronic equipment and a medium, which can solve the problem of high energy consumption of the variable-frequency fluorine pump air conditioner to a certain extent.

In a first aspect, a method for controlling an inverter fluorine pump air conditioner is provided, which includes:

determining a current working mode of the variable frequency air conditioner according to the current outdoor temperature;

confirming the total heat transfer temperature difference according to the current outdoor temperature, the information of the target device and/or the system load rate;

determining a working device corresponding to the current working mode;

and regulating and controlling the working devices of the variable frequency air conditioner by taking the total heat transfer temperature difference as a target. Further, the present application provides a method for controlling a variable frequency fluorine pump air conditioner, which is configured to control the working device of the variable frequency air conditioner with the goal of achieving the total heat transfer temperature difference, and includes one or more of the following steps:

regulating and controlling the rotating speed of the external fan according to the condensation temperature value;

regulating and controlling the rotating speed of the variable frequency compressor according to the target evaporation temperature value;

regulating and controlling an expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the inner fan according to the load rate of the system; and

and regulating and controlling the rotation speed of the liquid pump according to the target evaporation temperature value.

Further, the present application provides a method for controlling a variable-frequency fluorine pump air conditioner, further comprising one or more of the following steps:

acquiring the current outdoor temperature;

acquiring the system load rate of the variable frequency air conditioner;

acquiring information of a target device of the variable frequency air conditioner;

acquiring a current air outlet/return temperature value of the variable frequency air conditioner;

determining a target evaporation temperature value according to a first mapping relation between a preset air outlet/return temperature value and an evaporation temperature value;

calculating to obtain a condensation temperature value according to the current outdoor temperature value, the current indoor temperature value and the target evaporation temperature value;

converting the condensation temperature value into a condensation pressure value;

determining a corresponding current target suction superheat degree according to the system load rate and the current outdoor temperature value;

and adjusting the working device according to the target evaporation temperature, the current target suction superheat degree, the condensation pressure value and/or the system load rate.

Further, the application provides a control method of a variable-frequency fluorine pump air conditioner, when the current working mode is a refrigeration mode, corresponding working devices comprise a compressor, an inner fan, an outer fan and an expansion valve;

the adjusting the working device according to the target evaporation temperature, the current target suction superheat degree, the condensation pressure value/and the system load factor comprises the following steps:

performing one or more of the following in the cooling mode: regulating and controlling the rotating speed of the compressor according to the target evaporation temperature value; regulating and controlling the opening of the expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the outer fan according to the condensation pressure value; and regulating and controlling the rotating speed of the inner fan according to the system load rate.

Further, the application provides a control method of a variable-frequency fluorine pump air conditioner, when the current working mode is a mixed mode, corresponding working devices comprise the compressor, the inner fan, the outer fan, the expansion valve and a liquid pump;

the adjusting the working device according to the target evaporation temperature, the current target suction superheat degree, the condensation pressure value/and the system load factor comprises the following steps:

performing one or more of the following in the hybrid mode: regulating and controlling the rotating speed of the compressor according to the target evaporation temperature value; regulating and controlling the opening of the expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the outer fan according to the condensation pressure value; regulating and controlling the rotating speed of the inner fan according to the system load rate; and regulating and controlling the rotation speed of the liquid pump according to the target evaporation temperature value.

Further, the present application provides a method for controlling a variable frequency fluorine pump air conditioner, where the method for regulating and controlling the rotation speed of the liquid pump according to the target evaporation temperature value includes:

converting the target evaporation temperature value into a target evaporation pressure value;

and determining a pressure difference value according to the condensation pressure value and the target evaporation pressure value, and regulating and controlling the rotating speed of the liquid pump according to the pressure difference value.

Further, the application provides a control method of a variable-frequency fluorine pump air conditioner, when the current working mode is a liquid pump driving heat pipe mode, corresponding working devices comprise the inner fan, the outer fan, the expansion valve and a liquid pump;

adjusting the working device according to the target evaporation temperature, the current target suction superheat degree, the condensation pressure value/and the system load factor, wherein the adjusting comprises the following steps:

performing one or more of the following in the liquid pump driven heat pipe mode: converting the target evaporation temperature value into a target evaporation pressure value;

obtaining a target condensation temperature value according to the target evaporation pressure value;

correcting and limiting the target condensation temperature value according to the current outdoor temperature and a preset condensation temperature limiting value to obtain a corrected target condensation temperature value, wherein the corrected target condensation temperature value does not exceed the preset condensation temperature limiting value;

converting the corrected target condensation temperature value into a target condensation pressure value, and regulating and controlling the rotating speed of the external fan according to the target condensation pressure value;

controlling the expansion valve to be fully opened;

and regulating and controlling the rotating speed of the inner fan and the rotating speed of the liquid pump according to the system load rate.

Further, the present application provides a method for controlling a variable frequency fluorine pump air conditioner, wherein the determining a total heat transfer temperature difference according to the current outdoor temperature, the information of the target device and/or the system load factor comprises:

acquiring a third mapping relation between a preset outdoor temperature value, information of a target device and/or a system load rate and a total heat transfer temperature difference;

determining the current outdoor temperature value, the information of the target device and/or the total heat transfer temperature difference corresponding to the system load rate according to the third mapping relation; the target device comprises a condenser, an evaporator, an inner fan and an outer fan.

Further, the present application provides a method for controlling an inverter fluorine pump air conditioner, where the obtaining of the system load factor of the inverter air conditioner includes:

acquiring the set temperature of the variable frequency air conditioner; acquiring the current indoor temperature;

calculating to obtain a difference value between the current indoor temperature and the set temperature; and comparing the difference value with a preset deviation value to determine the system load rate of the variable frequency air conditioner.

In a second aspect, a control device for an inverter fluorine pump air conditioner is provided, which includes:

a determination module to:

determining a current working mode of the variable frequency air conditioner according to the current outdoor temperature;

confirming the total heat transfer temperature difference according to the current outdoor temperature, the information of the target device and/or the system load rate;

determining a working device corresponding to the current working mode;

and the regulating and controlling module is used for regulating and controlling the working devices of the variable frequency air conditioner by taking the total heat transfer temperature difference as a target.

In a third aspect, an electronic device is provided, comprising a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps as in the first aspect and any one of its possible implementations.

In a fourth aspect, there is provided a computer storage medium storing one or more instructions adapted to be loaded by a processor and to perform the steps of the first aspect and any possible implementation thereof.

The method comprises the steps of determining the current working mode of the variable frequency air conditioner according to the current outdoor temperature; confirming the total heat transfer temperature difference according to the current outdoor temperature, the information of the target device and/or the system load rate; determining a working device corresponding to the current working mode; the working devices of the variable frequency air conditioner are regulated and controlled to achieve the total heat transfer temperature difference, the variable frequency air conditioner system can be controlled to operate in different working modes at different outdoor temperatures and operate at higher energy efficiency at different load factors, the energy-saving operation of the variable frequency air conditioner system is achieved, the excellent dynamic refrigeration goal is achieved, and the energy consumption of a data center is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.

Fig. 1A is a schematic diagram of a control system of a variable frequency fluorine pump air conditioner according to an embodiment of the present disclosure;

fig. 1B is a schematic flowchart of a control method for an inverter fluorine pump air conditioner according to an embodiment of the present disclosure;

FIG. 2 is a schematic flow chart illustrating another method for controlling an inverter fluorine pump air conditioner according to an embodiment of the present disclosure;

fig. 3A is a schematic data processing flow diagram of a refrigeration mode down-conversion fluorine pump air conditioner control system according to an embodiment of the present disclosure;

fig. 3B is a schematic data processing flow diagram of a mixed-mode down-conversion fluorine pump air conditioner control system according to an embodiment of the present disclosure;

fig. 3C is a schematic data processing flow diagram of a liquid pump driven heat pipe mode down-conversion fluorine pump air-conditioning control system according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of an inverter fluorine pump air conditioner control device according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The embodiments of the present application will be described below with reference to the drawings.

Referring to fig. 1A, fig. 1A is a schematic diagram of an inverter fluorine pump air-conditioning control system according to an embodiment of the present disclosure, as shown in fig. 1A, the system may include an inverter compressor 1, acondenser 2, an accumulator 3, a solenoid valve 4, anexpansion valve 5, anevaporator 6, a fluorine pump 7, a check valve 8, and a solenoid valve 9. In one embodiment, the method for controlling an inverter fluorine pump air conditioner in the embodiment of the present application may be implemented on the basis of the system shown in fig. 1A. Namely, the application also discloses an inverter fluorine pump air conditioner control system which can execute the method shown in the figure 1B or the figure 2.

The variable-frequency air conditioner in the embodiment of the application can be a variable-frequency air conditioner with a fluorine pump function, the variable-frequency fluorine pump air conditioning system can run a refrigeration mode, a hybrid mode or a liquid pump driving heat pipe mode according to outdoor temperature, and the system can be a machine room variable-frequency fluorine pump air conditioning system for a machine room/data center. Wherein:

in a refrigeration mode: at the moment, because the outdoor temperature is high, a liquid pump does not need to be operated, the liquid pump is not included in the operation part control, at the moment, the electromagnetic valve connected with the liquid pump in parallel is opened, the electromagnetic valve connected with the compressor in parallel is closed, and if the electromagnetic valve of the system is replaced by a one-way valve, the valve control is not needed;

in a mixed mode: at the moment, the environmental temperature is low, a liquid pump auxiliary system needs to be operated for circulation, the supercooling degree is improved, the circulation power is enhanced, and oil return or motor cooling is enhanced. At the moment, the electromagnetic valve connected with the liquid pump in parallel is closed, the electromagnetic valve connected with the compressor in parallel is closed, and if the electromagnetic valve of the system is replaced by a one-way valve, valve control is not needed;

liquid pump driven heat pipe mode (fluorine pump mode): at the moment, the environment temperature is low, the compressor does not need to be operated, and the liquid pump is operated to drive the heat pipe mode to replace compression refrigeration, so that energy conservation is realized. At the moment, the electromagnetic valve connected with the liquid pump in parallel is closed, the electromagnetic valve connected with the compressor in parallel is opened, and if the electromagnetic valve of the system is replaced by the one-way valve, valve control is not needed.

Referring to fig. 1B, fig. 1B is a schematic flow chart illustrating a method for controlling an inverter fluorine pump air conditioner according to an embodiment of the present disclosure. The method can comprise the following steps:

101. and determining the current working mode of the variable frequency air conditioner according to the current outdoor temperature.

The control method of the variable-frequency fluorine pump air conditioner in the embodiment of the application can be applied to a machine room air conditioner system, and comprises a variable-frequency compressor, a condenser, a liquid storage device, an expansion valve, a liquid pump (fluorine pump) and an evaporator, wherein the inlet and the outlet of the liquid pump and the compressor are respectively connected with an electromagnetic valve in parallel; and the system also comprises a main control system of the system, which is used for regulating and controlling each module.

Optionally, the electromagnetic valves respectively connected in parallel with the liquid pump and the inlet and outlet of the compressor may be replaced by one-way valves; the electromagnetic valve belongs to electric drive, needs manual intervention control, and the check valve belongs to a mechanical valve, does not need to be set manually, so that the system control is simpler and the reliability is high.

The variable frequency air conditioning system can acquire an indoor temperature value in real time, for example, a current temperature value in a machine room can be acquired through any temperature sensor, and the method is not limited here.

In the embodiment of the application, working modes corresponding to different outdoor temperature values can be preset, and the system can respectively switch the operation refrigeration mode, the mixed mode or the heat pipe mode according to the current outdoor temperature value, namely the liquid pump driving heat pipe mode.

For example, the cooling mode may be operated when the outdoor temperature Tout > T1 ℃, the mixing mode may be operated when the outdoor temperature is T2 ≦ Tout ≦ T1, and the liquid pump driven heat pipe mode may be operated when the outdoor temperature Tout < T2, where the preset temperature values T1 and T2 may be set as desired.

102. And confirming the total heat transfer temperature difference according to the current outdoor temperature, the information of the target device and the system load rate.

According to the embodiment of the application, the system load rate of the variable frequency air conditioner can be obtained. It is understood that in one embodiment, such as the fluorine pump mode provided herein, thestep 102 may be "identify the total heat transfer temperature difference according to the current outdoor temperature and the information of the target device", i.e. the total heat transfer temperature difference is no longer identified in conjunction with the system load factor in thestep 102. Because Tc-Te is 0 in the fluorine pump mode; in this mode, the compressor does not need to be started for refrigeration. The total heat transfer temperature difference is determined according to Tin-Tout without determining the total heat transfer temperature difference according to Tc-Te.

It should be noted that, in the present embodiment and in the present specification (including the claims), the "confirmation of the total heat transfer temperature difference according to the current outdoor temperature, the information of the target device, and the system load factor" includes at least the following contents:

confirming the total heat transfer temperature difference according to the current outdoor temperature and the information of the target device; or

And confirming the total heat transfer temperature difference according to the current outdoor temperature, the information of the target device and the system load rate.

When the variable frequency air conditioning system is started to operate, the load rate of the system at the moment can be obtained by setting a temperature value, a current indoor temperature value and a preset deviation threshold value. That is, in an optional embodiment, the obtaining the system load factor of the inverter air conditioner includes:

acquiring the set temperature of the variable frequency air conditioner; acquiring the current indoor temperature;

calculating to obtain the difference value between the current indoor temperature and the set temperature; and comparing the difference value with a preset deviation value to determine the system load rate of the variable frequency air conditioner.

The set temperature value is a preset target temperature value and can be set in advance by a user. The variable frequency air conditioning system can adjust the indoor temperature by taking the set temperature value as a target, and mainly performs refrigeration and cooling.

Specifically, the set temperature value is T, the current indoor temperature value is Tin, a difference (Tin-T) between the set temperature value and the current indoor temperature value can be calculated, and the load factor is determined by comparing the difference (Tin-T) with a preset deviation threshold Δ T according to a defined preset deviation threshold Δ T. For example, when T is 24, Tin is 26, and Δ T is 1.5, (Tin-T) is 26-24 is 2, and is greater than 1.5, the current system load rate is determined to be 100%.

In the embodiment of the application, the information of the target device of the variable frequency air conditioner can be acquired.

The target devices are related to refrigeration and heating of the variable frequency air conditioning system and can comprise a condenser, an evaporator, an inner fan and an outer fan. The master control system may obtain information about each target device, which may be pre-stored in relation to an initial period, and may be used to validate the total heat transfer differential of the system.

The total heat transfer temperature difference can be determined according to the matching conditions of the condenser, the evaporator and the fan, and is a matching rule determined based on initial design. In an alternative embodiment, thestep 102 may include:

acquiring a third mapping relation between a preset outdoor temperature value, information of a target device and/or a system load rate and a total heat transfer temperature difference;

determining the current outdoor temperature value, the information of the target device and/or the total heat transfer temperature difference corresponding to the system load rate according to the third mapping relation; the target device comprises a condenser, an evaporator, an inner fan and an outer fan.

103. And determining the working device corresponding to the current working mode.

Under different working modes, the system corresponds to different working devices, so that the corresponding regulation and control strategies are different. In the case of determining the current operating mode, the corresponding operating device is determined.

For example, when the current working mode is a cooling mode, the corresponding working devices include a compressor, an inner fan, an outer fan and an expansion valve; when the current working mode is a mixed mode, the corresponding working devices comprise the compressor, the inner fan, the outer fan, the expansion valve and the liquid pump; when the current working mode is a liquid pump driving heat pipe mode, the corresponding working devices comprise the inner fan, the outer fan, the expansion valve and the liquid pump.

104. And regulating and controlling the working devices of the variable frequency air conditioner by taking the total heat transfer temperature difference as a target.

The difference value of the condensing temperature and the evaporating temperature of the system can be utilized to properly compensate the insufficient indoor and outdoor temperature difference condition, and finally the required total heat transfer temperature difference is achieved to control the refrigeration system, so that the lowest energy consumption operation of the system is realized.

It is understood that, in order to achieve the purpose of the present invention, within the spirit of the present invention, according to actual needs, thestep 104 may be to perform at least one of the following, i.e. to perform one or more of the following: regulating and controlling the rotating speed of the external fan according to the condensation temperature value; regulating and controlling the rotating speed of the variable frequency compressor according to the target evaporation temperature value; regulating and controlling an expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the inner fan according to the load rate of the system; and regulating and controlling the rotating speed of the liquid pump according to the target evaporation temperature value. Accordingly, other steps may be performed as desired, with only the associated steps being omitted. For example, in one embodiment, if "modulating the expansion valve based on the current target suction superheat" is not performed, then the steps associated with obtaining or determining the "current target suction superheat" associated with modulating the expansion valve may not be included, and so forth. For another example, in an embodiment, if "regulating the outer fan rotation speed according to the above-mentioned condensation temperature value" is not performed, the step of acquiring or determining the "condensation temperature value" related to the outer fan rotation speed may not be included.

Further, referring to a flow diagram of another method for controlling an inverter fluorine pump air conditioner shown in fig. 2, as shown in fig. 2, the method is a specific implementation form of thestep 104, and may include:

201. and acquiring the current air outlet/return temperature value of the variable frequency air conditioner.

The return air temperature mentioned in the embodiment of the application is the temperature of the return air inlet of the indoor variable frequency air conditioner, and the outlet air temperature is the temperature of the air supply outlet of the indoor variable frequency air conditioner. In an embodiment, beforestep 201, the following steps may be further included: and acquiring the current outdoor temperature, acquiring the system load rate of the variable frequency air conditioner, and acquiring the information of a target device of the variable frequency air conditioner.

202. And acquiring a first mapping relation between a preset air outlet/return temperature value and an evaporation temperature value, and determining a target evaporation temperature value according to the first mapping relation. It is understood that, in an embodiment, thestep 202 may also be: determining a target evaporation temperature value according to a first mapping relation between a preset air outlet/return temperature value and an evaporation temperature value; in a further embodiment, before "determining the target evaporation temperature value according to the first mapping relationship between the preset outlet/return air temperature value and the evaporation temperature value", a step of obtaining the first mapping relationship between the preset outlet/return air temperature value and the evaporation temperature value "may be further included.

Different air outlet temperature values have different target evaporation temperature values under the same evaporator and fan conditions. For example, the indoor return air temperature of 24 ℃ corresponds to the target evaporation temperature value of 9 ℃, and similarly, when the return air temperature is 35 ℃, the corresponding target evaporation temperature value is 15 ℃, and the indoor return air temperature can be preconfigured as required, that is, the first mapping relationship is preconfigured. Optionally, the outlet air temperature in this application embodiment may also be the return air temperature.

And determining a corresponding target evaporation temperature value according to the current outlet air temperature value and the first mapping relation. The rotating speed of the variable-frequency compressor can be controlled according to the target evaporation temperature value. Specifically, the compressor has different evaporation temperatures, such as a return air temperature value of 35 ℃, an evaporation temperature corresponding to 90 revolutions may be 13 ℃, an evaporation temperature corresponding to 85 revolutions is 15 ℃, and a preset operation control rule may be adopted, so that the corresponding rotation speed can be adjusted by setting a target evaporation temperature value, under the condition that the same outlet/return air temperature value is matched with the evaporator at different rotation speeds.

In an embodiment, after determining the target evaporation temperature value according to the current outlet/return air temperature value and the first mapping relationship between the preset outlet/return air temperature value and the evaporation temperature value, the method further includes:

acquiring a preset outlet air/return air temperature value limit value and a preset evaporation temperature value limit value of a compressor;

correcting the target evaporation temperature value according to the air outlet/return air temperature value limit value and the evaporation temperature value limit value of the compressor to obtain a checked target evaporation temperature value; the checked target evaporation temperature value is the minimum value among the outlet air/return air temperature value limit value, the evaporation temperature value limit value of the compressor and the target evaporation temperature value.

The method comprises the steps that an air outlet/return air temperature value limit value of a machine room and a preset evaporation temperature value limit value of a compressor can be preset, a calculated target evaporation temperature value Te1 at the moment can be corrected according to the limit values of the air outlet/return air temperature value limit value and the preset evaporation temperature value limit value of the compressor, specifically, the minimum value of the air outlet/return air temperature value limit value and the calculated target evaporation temperature value Te1 can be taken as a checked target evaporation temperature value Te2, and the rotating speed of the variable frequency compressor is controlled according to the target evaporation temperature value Te2 at the moment; the air outlet/return temperature value limit value may be obtained by first determining whether the current air outlet/return temperature is within a preset temperature threshold range, so as to adjust the target evaporation temperature value.

In an optional implementation manner, after obtaining the current outlet/return air temperature of the inverter air conditioner, the method further includes:

judging whether the current air outlet/return temperature is within a preset temperature threshold range;

if the current air outlet/return temperature is in the preset air outlet/return temperature range, triggering the mapping relation between the current air outlet/return temperature and the preset air outlet/return temperature and the evaporating temperature, and determining a target evaporating temperature value;

if not, acquiring a target air outlet/return temperature which is closest to the current air outlet/return temperature from the preset temperature threshold range;

and determining the target evaporation temperature value according to the target air outlet/return temperature and the preset mapping relation between the air outlet/return temperature and the evaporation temperature.

The target evaporation temperature value exceeding the limit value can be prevented from being set by correction so as to enable the compressor to work in a stable state.

203. And calculating to obtain a condensation temperature value according to the current outdoor temperature value, the current indoor temperature value and the target evaporation temperature value, and converting the condensation temperature value into a condensation pressure value.

Specifically, according to the current outdoor temperature Tout, the current indoor temperature Tin and the known total heat transfer temperature difference Δ T, the condensation temperature Tc1 can be calculated by the formula Δ T ═ Tin-Tout) + (Tc-Te). Wherein Te is the finally determined target evaporation temperature value.

204. And determining the corresponding current target suction superheat degree according to the system load rate and the current outdoor temperature value.

The target suction superheat degree under the current system load rate and the outdoor temperature value can be determined according to a preset matching rule. The following basic principles are generally followed: the system load rate is high, and the target superheat degree is low; the outdoor temperature is low, and the target superheat degree is high.

In an alternative embodiment, the determining a current target suction superheat according to the system load factor and the current outdoor temperature value includes:

acquiring a second mapping relation between a preset system load rate, an outdoor temperature value and a suction superheat degree;

and determining the current target suction superheat degree corresponding to the system load rate and the current outdoor temperature value according to the second mapping relation.

The second mapping relationship among the system load rate, the outdoor temperature value and the suction superheat degree can be preset, so that the current target suction superheat degree corresponding to the current system load rate and the outdoor temperature value is matched. In an optional implementation manner, the following may be specifically set:

if the outdoor temperature value is more than 15 ℃, the corresponding target suction superheat degree is variable from 4 to 7 degrees, when the load rate is 100%, the target suction superheat degree is 4 ℃, and when the load rate is 50%, the target suction superheat degree is 6 degrees; the outdoor temperature value is lower than 15 ℃, and the corresponding target suction superheat degree is variable from 8 ℃ to 11 ℃, and various settings can be provided, and the embodiment of the application does not limit the temperature.

205. And adjusting the working device according to the target evaporation temperature, the current target suction superheat degree, the condensation pressure value and the system load rate.

The obtained target evaporation temperature, the current target suction superheat degree, the condensation pressure value and the system load rate are required regulation and control parameters of different working devices, so that the working devices can be correspondingly regulated and controlled according to the obtained regulation and control parameters.

In order to more clearly reflect the control method of the variable frequency fluorine pump air conditioner provided by the embodiment of the present application in different operation modes, the following is a detailed description of the processing conditions in the different operation modes:

(1) when the current working mode is a refrigeration mode, the corresponding working devices comprise a compressor, an inner fan, an outer fan and an expansion valve;

thestep 205 may specifically include:

in the refrigeration mode, regulating and controlling the rotating speed of the compressor according to the target evaporation temperature value; regulating and controlling the opening of the expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the outer fan according to the condensation pressure value; and regulating and controlling the rotating speed of the inner fan according to the system load rate. It is understood that in other embodiments, one or more of the above modes may be performed in the cooling mode.

The condensing temperature and the condensing pressure are refrigerant characteristics, that is, the condensing temperature corresponds to a saturation pressure. The obtained condensation temperature value can be converted into a condensation pressure value, and the outer fan is regulated and controlled to work to the target outer fan rotating speed through the condensation pressure value.

Optionally, after converting the condensation temperature value into a condensation pressure value, the method further includes:

and correcting the condensation pressure value according to the compression ratio limit value of the compressor and the outdoor temperature value, and determining the checked condensation pressure value.

The corresponding Tc limit value can be calculated by the limit value of the compression ratio (pressure difference) of the compressor, and Tc2 can be obtained by comprehensively checking the current outdoor temperature value. For example, if the compression ratio limit value of the compressor is 1.2, when the target evaporation temperature Te2 is determined, the corresponding pressure value Pe2 is obtained, and Pc/Pe2 needs to be greater than the compression ratio limit value of the compressor by 1.2. For example, Te2 ═ 15 ℃ and Pe2 ═ 1.15MPa, then Pc is required to be >, as

1.15*1.2＝1.38Mpa。

And converting the condensation temperature Tc2 into a condensation pressure value Pc, feeding back the condensation pressure value Pc to the outdoor fan through the control system, and controlling and adjusting the rotating speed of the outdoor fan. Once Tc2 is calculated, Pc is converted, and then the outer fan speed is controlled at the value of Pc according to Pc.

In an optional implementation manner, the controlling the rotation speed of the internal fan according to the system load factor further includes:

acquiring the lowest rotating speed of a preset inner fan;

and adjusting the rotating speed of the inner fan according to the system load rate to enable the rotating speed of the inner fan to be a target inner fan rotating speed, wherein the target inner fan rotating speed is higher than the preset minimum inner fan rotating speed.

The rotating speed of the indoor fan of the system can be controlled through the load factor, but the rotating speed of the fan is still limited by the lowest rotating speed of the inner fan at the moment, namely the rotating speed of the fan is reduced and cannot be lower than the lowest rotating speed of the preset inner fan, so that the stable operation of devices is ensured.

The expansion valve in the embodiment of the present application is an important self-controlled component of the refrigeration system, and is generally installed between the liquid storage cylinder and the evaporator. The temperature change of an air box head (a temperature sensing bulb) is used as a signal, the opening degree of a valve is adjusted, the flow rate of the refrigerant is changed, the refrigerant with medium temperature and high pressure is throttled to become a gas-liquid mixed refrigerant with low temperature and low pressure, and then the refrigerant absorbs heat in an evaporator to achieve the refrigeration effect.

The superheat is referred to as the temperature difference between the evaporation temperature and the evaporator outlet temperature in the system. The expansion valve is the temperature difference corresponding to the temperature of the temperature sensing bulb and the pressure below the diaphragm. In the case where the target intake air superheat is determined, the opening degree of the expansion valve may be controlled in accordance with the set target intake air superheat. The refrigerating system can reach the maximum cold quantity only by ensuring that the superheat degree is in a proper range, and the wet stroke can not be caused.

In the embodiment of the application, the expansion valve of the system is controlled by variable superheat degree, and different target suction superheat degrees are adopted for different load rates and different outdoor temperature values, so that safe, stable, reliable and energy-saving operation of the system is realized.

Specifically, referring to fig. 3A, fig. 3A is a schematic data processing flow diagram of a refrigeration mode down-conversion fluorine pump air conditioner control system provided by the present application. As shown in fig. 3A, the method proposed in the embodiment of the present application first determines the total heat transfer temperature difference, and first determines the target evaporation temperature value (Te) to achieve the control of the compressor with the total heat transfer temperature difference as the target; and then, calculating and checking the condensation temperature value (Tc) by using the above-mentioned total heat transfer temperature difference formula to realize the control of the external fan, and confirming the regulation and control of the opening of the expansion valve and the rotating speed of the internal fan according to the load rate, correction and limitation of the system. After the parameters are calculated and determined, the parameters can be fed back to the corresponding device by the main control unit to perform regulation and control. The steps involved may refer to the detailed description in the foregoing embodiments, and are not repeated here. The control method of the variable-frequency fluorine pump air conditioner in the embodiment of the application can realize that the system compressor runs at a higher evaporation temperature as much as possible, and realize energy conservation of the compressor.

(2) When the current working mode is a mixed mode, the corresponding working devices comprise the compressor, the inner fan, the outer fan, the expansion valve and the liquid pump;

thestep 205 specifically includes:

in the mixed mode, regulating and controlling the rotating speed of the compressor according to the target evaporation temperature value; regulating and controlling the opening of the expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the outer fan according to the condensation pressure value; regulating and controlling the rotating speed of the inner fan according to the system load rate; and regulating and controlling the rotating speed of the liquid pump according to the target evaporation temperature value. It is understood that in other embodiments, in the hybrid mode, one or more of the above modes may be performed.

In the mixed mode, the operation modes of the compressor, the inner fan, the outer fan and the expansion valve are the same as the refrigeration mode, and are not described again here.

Optionally, the adjusting and controlling the rotation speed of the liquid pump according to the target evaporation temperature value includes:

converting the target evaporation temperature value into a target evaporation pressure value;

and determining a pressure difference value according to the condensation pressure value and the target evaporation pressure value, and regulating and controlling the rotating speed of the liquid pump according to the pressure difference value.

When the evaporation temperature value corresponds to the evaporation pressure value Pe, the condensation temperature value corresponds to the condensation pressure value Pc; generally, a pressure difference value can be preset to control the rotation speed of the liquid pump according to the system characteristics. In the embodiment of the application, the pressure difference value Pc-Pe can be determined, when the liquid pump runs, the larger the pressure difference value is, the higher the rotating speed of the liquid pump is, the larger the flow is, the higher the power is, the Pc-Pe value can be set in advance according to the system characteristics, such as the target flow, the target refrigerating capacity and the resistance condition of the system, and is generally 2-4 bar. The liquid pump speed can then be controlled in accordance with this value.

Specifically, referring to fig. 3B, fig. 3B is a schematic data processing flow diagram of a mixed-mode down-conversion fluorine pump air conditioner control system provided by the present application. As shown in fig. 3B, the operation modes of the compressor, the inner fan, the outer fan and the expansion valve are the same as the refrigeration mode, and a function of performing a series of transformations to regulate and control the liquid pump according to the checked target evaporation temperature value Tc2 is added, which is not described herein again.

(3) When the current working mode is a liquid pump driving heat pipe mode, the corresponding working devices comprise the inner fan, the outer fan, the expansion valve and the liquid pump;

thestep 205 specifically includes:

converting the target evaporation temperature value into a target evaporation pressure value in the mode that the liquid pump drives the heat pipe;

obtaining a target condensation temperature value according to the target evaporation pressure value;

correcting and limiting the target condensation temperature value according to the current outdoor temperature and a preset condensation temperature limiting value to obtain a corrected target condensation temperature value, wherein the corrected target condensation temperature value does not exceed the preset condensation temperature limiting value;

converting the corrected target condensation temperature value into a target condensation pressure value, and regulating and controlling the rotating speed of the external fan according to the target condensation pressure value;

controlling the expansion valve to be fully opened;

and regulating and controlling the rotating speed of the inner fan and the rotating speed of the liquid pump according to the system load rate.

Specifically, when the system is started and operated, the target evaporation temperature value Te is controlled by controlling the target evaporation temperature value Te, and the target evaporation temperature value Te is corrected and limited by the upper limit value of the outlet air temperature; converting the target evaporation temperature value Te subjected to correction and limitation into a target condensation pressure value Pe, obtaining a corresponding target condensation temperature value Tc according to the target condensation pressure value Pe, and correcting and limiting Tc according to the current outdoor temperature value Tout and the Tc limit value; the current target condensation temperature value Tc does not exceed the Tc limit value; and converting the Tc into a target condensation pressure value Pc, feeding back the value to the outer fan through a control system, and controlling and adjusting the rotating speed of the outer fan. It can be understood that, in the present liquid pump driven heat pipe mode, Tc — Te is 0 since Tc is Te; in this mode, the compressor does not need to be started for refrigeration. The total heat transfer temperature difference is determined according to Tin-Tout without determining the total heat transfer temperature difference according to Tc-Te.

The expansion valve is not fully opened under the mode that the liquid pump drives the heat pipe, so that throttling resistance exists, the resistance can cause the rotating speed of the liquid pump to be larger, the power consumption is larger, and in order to achieve energy conservation, the smaller the resistance is, the better the resistance is.

The rotating speed of the fan in the system can be controlled through the load factor, but the rotating speed of the fan is still limited by the lowest rotating speed of the fan at the moment, namely the rotating speed of the fan is reduced and cannot be limited by the lowest rotating speed, and the details are not repeated herein if the specific description is given under the refrigeration mode.

Specifically, refer to fig. 3C, where fig. 3C is a schematic data processing flow diagram of a liquid pump driven heat pipe mode down-conversion fluorine pump air conditioner control system provided by the present application. As shown in fig. 3C, in the liquid pump driving heat pipe mode, the rotation speed of the liquid pump is determined according to the target evaporation temperature Te2 and the system load rate, the inner fan runs at full speed, the electronic expansion valve is in a fully open state, and the rotation speed of the outer fan is determined according to the target condensation pressure value converted from the target condensation temperature value Tc, which is not described herein again.

The existing full-frequency conversion fluorine pump air conditioner adopts the potential of limiting the energy conservation of a compressor, and the fixed limitation of compression ratio operation is still adopted in the low-temperature season transition season, so that the energy consumption is high, and a further optimization space exists; meanwhile, the fluorine pump is started to operate in the mixed mode, which causes the phenomenon of energy consumption increase. The variable frequency air conditioner in the existing machine room and other scenes adopts fixed evaporation temperature, over-limited condensation temperature and fixed suction superheat degree control, so that the energy consumption of partial load of the system is higher, and an energy-saving optimization space still exists under the partial load rate.

A set of new control thought is provided according to the compensation temperature difference heat exchange principle, different working modes of the variable frequency air conditioning system can be operated under different load rates and different outdoor environment temperatures, each mode can operate in an energy-saving mode, the variable frequency air conditioning system can save energy, the excellent dynamic refrigeration target of the data center is realized, and finally the energy consumption of the data center is reduced.

In order to illustrate the above method more clearly, the following are specific embodiments in different modes provided for the present application:

for example, in the cooling mode:

for example, at the moment, the outdoor temperature value Tout is 35 ℃, the indoor temperature value Tin is 35 ℃, the current system load rate is calculated by setting the temperature value T, for example, 100%, the matching conditions of target devices such as a system condenser and an evaporator under 100% load are calculated by the main control system, and the total temperature difference Δ T required by the system is obtained, for example, the Δ T is 30 ℃;

at the moment, the target evaporation temperature Te1 is 15 ℃ according to the indoor return air temperature value of 35 ℃ and the matching of a system condenser and an evaporator, the calculated result is checked through the upper limit value of the compressor and the upper limit value of the outlet air temperature, the limit value of the compressor Te is 26 ℃ generally, the limit value of the outlet air temperature is 24-26 ℃ to the evaporation temperature is 20 ℃ for example, because the calculated result Te does not exceed the limit value, the finally checked Te2 is 15 ℃, the rotating speed of the compressor is controlled through the target evaporation temperature Te2 being 15 ℃, and the running rotating speed of the compressor can reach the targetevaporation temperature Te 2;

calculating a condensation temperature value Tc of 45 ℃ according to a formula Delta T of (Tc-Te) + (Tin-Tout), wherein the Tc is 45 ℃ and does not exceed the Tc limit value, so that the rotating speed of the outdoor fan is 100% to operate;

at the moment, the expansion valve carries out opening degree regulation control according to the load rate and the target suction superheat degree; the load rate is 100%, and the target superheat degree is 5 ℃; the rotating speed of the inner fan is controlled according to the load factor and the air outlet/return air temperature, for example, the air outlet temperature is controlled, generally 20-24 ℃, if the air outlet temperature is kept 100% within the range, if the air outlet temperature exceeds the range, the rotating speed of the fan is reduced, and in the process of reducing the rotating speed of the fan, the rotating speed of the fan does not exceed the lowest rotating speed limit of the fan at the moment.

If the system demand load rate is not 100% but 75%, calculating a target evaporation temperature value Te1 at the moment to be 16 ℃ according to the total temperature difference value delta T under the main control 75% load rate, such as 28 ℃; because the target values of 16 degrees are all within the limited range, the rotating speed of the compressor is controlled to realize that the target evaporation temperature value is 16 ℃, and further the operation of the compressor at higher evaporation temperature is realized. The energy efficiency of the system can be improved by more than 3% when the evaporation temperature of the compressor is improved by 1 degree, so that the efficient operation of the variable frequency air conditioning system is realized. If the outdoor temperature value is not changed, namely Tc is 44 ℃, the operation of the system at lower condensation temperature is realized, and further, the higher efficiency and the energy conservation are realized, meanwhile, the target suction superheat degree of the expansion valve at 75% load is 6 ℃, so that the target superheat degree is realized by controlling the opening degree of the expansion valve.

For example, in a hybrid mode:

for example, at this time, the outdoor temperature value Tout is 20 ℃, the indoor temperature value Tin is 35 ℃, the current system load rate is calculated by setting the temperature value T, for example, 100%, and the total temperature difference Δ T required by the system under 100% load is calculated by the main control system, for example, Δ T is 29 ℃;

at the moment, according to the matching of the indoor return air temperature of 35 ℃ and the information of target devices such as a system condenser, an evaporator and the like, the target evaporation temperature value Te1 is 15 ℃, the calculated result is checked through the upper limit value of the compressor and the upper limit value of the outlet air temperature, the limit value of the compressor Te is generally 26 ℃, the limit value of the outlet air temperature is 24-26 ℃ to the evaporation temperature is 20 ℃, the calculated result Te does not exceed the limit value, so that the finally checked Te2 is 15 ℃, the rotation speed of the compressor is controlled through the checked target evaporation temperature value Te2 being 15 ℃, and the operation rotation speed of the compressor can reach the targetevaporation temperature Te 2;

at the moment, the outdoor temperature Tout is 20 ℃, the condensation temperature Tc is 29 ℃ calculated according to the control system, and the rotating speed of the outer fan is 100% to operate because the Tc is 29 ℃ and does not exceed the Tc limit value; at the moment, the expansion valve performs opening degree regulation control according to the system load rate and the target suction superheat degree; the load rate is 100%, and the target suction superheat degree is 5 ℃; the rotating speed of the inner fan is controlled according to the load factor and the air outlet/return air temperature, for example, the air outlet temperature is controlled, generally 20-24 ℃, if the air outlet temperature is kept 100% within the range, if the air outlet temperature exceeds the range, the rotating speed of the fan is reduced, and in the process of reducing the rotating speed of the fan, the rotating speed of the fan does not exceed the lowest rotating speed limit of the fan at the moment.

At the moment, the checked Te2 is converted into a condensation pressure value Pe at 15 ℃, a pressure difference value Pc-Pe is obtained, and the rotation speed of the liquid pump is controlled by presetting the pressure difference value Pc-Pe;

under partial load rate conditions, such as 50% load rate, the total temperature difference Δ T required by the system at 50% load is 26 ℃; the target evaporation temperature Te1 at 50% load rate is 17 ℃, the rotating speed of the fan within 50% is 80% for example, the temperature of 17 ℃ is still in the safe range of the compressor and the air outlet temperature, the rotating speed of the compressor is controlled to reach the target evaporation temperature value, the target condensation temperature Tc is calculated to be 24 ℃, the temperature of 24 ℃ is still in the range of the compression ratio/pressure difference, and therefore the rotating speed of the outer fan is controlled to run to reach the target value.

The liquid pump speed is operated according to the pressure difference requirement. The expansion valve superheat degree is 8 ℃ when the load is 50%, so that the opening degree of the expansion valve is controlled to reach the target value.

For example, liquid pump (fluorine pump) heat pipe mode: for example, the outdoor temperature value Tout is 5 ℃ and the indoor temperature value Tin is 35 ℃ at the moment, the load rate at the moment is calculated through a main control system, if the load is 100%, the rotating speed of the liquid pump is controlled to operate at 100% of the rotating speed, the rotating speed of the internal fan is controlled according to the air outlet/return air temperature, for example, the air outlet temperature is adopted to control the rotating speed of the internal fan to be generally 20-24 ℃, if the air outlet temperature is kept at 100% within the range, if the air outlet temperature exceeds the range, the rotating speed of the fan is reduced, and in the process of reducing the rotating speed of the fan, the rotating speed of the fan does not exceed the lowest rotating speed limit of the fan at the moment;

the rotating speed of the outer fan needs to be corrected according to a target evaporation temperature value Te and an upper limit value of the air outlet temperature, the target evaporation temperature value Te after being limited by correction is converted into a target evaporation pressure value Pe, the rotating speed of the outer fan is controlled according to the target evaporation pressure value Pe, a target condensation temperature value Tc is obtained, meanwhile, the current outdoor temperature value Tc and a Tc limit value need to be corrected, the current condensation temperature Tc does not exceed the Tc limit value, and the rotating speed of the outer fan is finally confirmed. Thus, the target evaporation temperature value is 20 ℃, the Pc is converted into 13.5bar, and the Pc limit value, such as 11.5bar, is not exceeded but is close to the limit value, so that the rotating speed of the fan needs to be adjusted; the expansion valve is now in a fully open state. If under partial load, the load factor can be adjusted by adjusting the rotating speed of the liquid pump, and the rotating speed of the fan is not adjusted as much as possible, so that the problem of high energy consumption of a machine room caused by hot gas backflow is avoided.

In the embodiment of the application, the refrigeration system is controlled by utilizing a heat pipe efficient temperature difference heat transfer mechanism, after an evaporator and a condenser of the system are matched, Tc-Te is utilized to properly compensate for the situation of insufficient indoor and outdoor temperature difference Tin-Tout, and finally the required total heat transfer temperature difference is achieved to control the refrigeration system, so that the lowest energy consumption operation of the system is realized. In addition, the data center is not always under the 100% load working condition, so that the system can be operated at a higher evaporation temperature under the condition that the air outlet temperature is met and the safe operation of the data center is guaranteed under the partial load rate, and the energy conservation of the system is realized. Moreover, the expansion valve of the system is controlled by variable superheat degree, and different target superheat degrees are adopted for different load rates and different outdoor temperatures, so that safe, stable, reliable and energy-saving operation of the system is realized.

It is understood that, for the purpose of the present invention, the specific execution sequence of the above steps can be adjusted according to actual needs within the spirit of the present invention, and in some embodiments, one or more steps instep 201 and step 205 can be omitted or not executed.

Based on the description of the embodiment of the control method of the variable-frequency fluorine pump air conditioner, the embodiment of the application also discloses a control device of the variable-frequency fluorine pump air conditioner. As shown in fig. 4, the inverter fluorine pump air conditioning control apparatus 400 includes:

adetermination module 410 to:

determining a current working mode of the variable frequency air conditioner according to the current outdoor temperature;

confirming the total heat transfer temperature difference according to the current outdoor temperature, the information of the target device and/or the system load rate;

determining a working device corresponding to the current working mode;

and the regulating and controllingmodule 420 is configured to regulate and control the working device of the inverter air conditioner with the goal of achieving the total heat transfer temperature difference.

Optionally, theregulation module 420 is specifically configured to:

regulating and controlling the rotating speed of the external fan according to the condensation temperature value;

regulating and controlling the rotating speed of the variable frequency compressor according to the target evaporation temperature value;

regulating and controlling an expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the inner fan according to the load rate of the system; and

and regulating and controlling the rotation speed of the liquid pump according to the target evaporation temperature value.

Optionally, the inverter fluorine pump air conditioner control device 400 further includes an obtainingmodule 430, configured to:

acquiring the current outdoor temperature;

acquiring the system load rate of the variable frequency air conditioner;

acquiring information of a target device of the variable frequency air conditioner;

acquiring a current air outlet/return temperature value of the variable frequency air conditioner;

the determiningmodule 410 is further configured to:

acquiring a first mapping relation between a preset air outlet/return temperature value and an evaporation temperature value, and determining a target evaporation temperature value according to the first mapping relation;

calculating to obtain a condensation temperature value according to the current outdoor temperature value, the current indoor temperature value and the target evaporation temperature value;

converting the condensation temperature value into a condensation pressure value;

determining a corresponding current target suction superheat degree according to the system load rate and the current outdoor temperature value;

thecontrol module 420 is specifically configured to adjust the working device according to the target evaporation temperature, the current target degree of superheat of air suction, the condensation pressure value, and the system load factor.

Optionally, when the current working mode is a refrigeration mode, the corresponding working devices include a compressor, an inner fan, an outer fan and an expansion valve;

theregulation module 420 is specifically configured to:

in the refrigeration mode, regulating and controlling the rotating speed of the compressor according to the target evaporation temperature value; regulating and controlling the opening of the expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the outer fan according to the condensation pressure value; and regulating and controlling the rotating speed of the inner fan according to the system load rate.

Optionally, when the current working mode is a hybrid mode, the corresponding working device includes the compressor, the inner fan, the outer fan, the expansion valve, and the liquid pump;

theregulation module 420 is specifically configured to:

in the mixed mode, regulating and controlling the rotating speed of the compressor according to the target evaporation temperature value; regulating and controlling the opening of the expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the outer fan according to the condensation pressure value; regulating and controlling the rotating speed of the inner fan according to the system load rate; and regulating and controlling the rotating speed of the liquid pump according to the target evaporation temperature value.

Optionally, the determiningmodule 410 is specifically configured to:

converting the target evaporation temperature value into a target evaporation pressure value;

determining a pressure difference value according to the condensation pressure value and the target evaporation pressure value;

theregulation module 420 is specifically configured to: and regulating and controlling the rotating speed of the liquid pump according to the differential pressure value.

Optionally, when the current working mode is a liquid pump driving heat pipe mode, the corresponding working devices include the inner fan, the outer fan, the expansion valve and the liquid pump;

the determiningmodule 410 is specifically configured to:

converting the target evaporation temperature value into a target evaporation pressure value in the mode that the liquid pump drives the heat pipe;

obtaining a target condensation temperature value according to the target evaporation pressure value;

correcting and limiting the target condensation temperature value according to the current outdoor temperature and a preset condensation temperature limiting value to obtain a corrected target condensation temperature value, wherein the corrected target condensation temperature value does not exceed the preset condensation temperature limiting value;

converting the corrected target condensation temperature value into a target condensation pressure value;

theregulation module 420 is further specifically configured to:

regulating and controlling the rotating speed of the outer fan according to the target condensation pressure value;

controlling the expansion valve to be fully opened;

and regulating and controlling the rotating speed of the inner fan and the rotating speed of the liquid pump according to the system load rate.

Optionally, the determiningmodule 410 is further specifically configured to:

acquiring a third mapping relation between a preset outdoor temperature value, information of a target device and/or a system load rate and a total heat transfer temperature difference;

determining the current outdoor temperature value, the information of the target device and/or the total heat transfer temperature difference corresponding to the system load rate according to the third mapping relation; the target device comprises a condenser, an evaporator, an inner fan and an outer fan.

Optionally, the obtainingmodule 430 is specifically configured to:

acquiring the set temperature of the variable frequency air conditioner; acquiring the current indoor temperature;

calculating to obtain the difference value between the current indoor temperature and the set temperature; and comparing the difference value with a preset deviation value to determine the system load rate of the variable frequency air conditioner.

According to an embodiment of the present application, the apparatus may perform the steps in the method embodiment shown in fig. 1B or fig. 2, which are not described herein again.

Based on the description of the method embodiment and the apparatus embodiment, an embodiment of the present application further provides an electronic device, which may be an inverter air conditioner or an inverter fluorine pump air conditioner. As shown in fig. 5, which is a schematic structural diagram of an electronic device provided in the present application, theelectronic device 500 may include aprocessor 501, an input/output device 502, amemory 503, and a computer storage medium. Wherein the various component units within the electronic device may be connected by abus 504 or otherwise.

A computer storage medium may be stored in thememory 503 of theelectronic device 500 for storing a computer program comprising program instructions, and theprocessor 501 for executing the program instructions stored by the computer storage medium. A processor (or CPU) is a computing core and a control core of an electronic device, and is adapted to implement one or more instructions, and in particular, is adapted to load and execute the one or more instructions so as to implement a corresponding method flow or a corresponding function; in one embodiment, theprocessor 501 described above in this embodiment of the present application may be configured to perform a series of processes, including the steps involved in the method shown in fig. 1B or fig. 2.

An embodiment of the present application further provides a computer storage medium (Memory), which is a Memory device in an electronic device and is used to store programs and data. It is understood that the computer storage medium herein may include both a built-in storage medium in the electronic device and, of course, an extended storage medium supported by the electronic device. Computer storage media provide storage space that stores an operating system for an electronic device. Also stored in the memory space are one or more instructions, which may be one or more computer programs (including program code), suitable for loading and execution by the processor. The computer storage medium may be a high-speed RAM memory, or may be a non-volatile memory (non-volatile memory), such as at least one disk memory; and optionally at least one computer storage medium located remotely from the processor.

In one embodiment, one or more instructions stored in a computer storage medium may be loaded and executed by a processor to perform the corresponding steps in the above embodiments; in a specific implementation, one or more instructions in the computer storage medium may be loaded by the processor and perform the steps involved in the method shown in fig. 1B or fig. 2, which are not described herein again.

It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and modules may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the division of the module is only one logical division, and other divisions may be possible in actual implementation, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not performed. The shown or discussed mutual coupling, direct coupling or communication connection may be an indirect coupling or communication connection of devices or modules through some interfaces, and may be in an electrical, mechanical or other form.

Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)), or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a read-only memory (ROM), or a Random Access Memory (RAM), or a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, a magnetic disk, or an optical medium, such as a Digital Versatile Disk (DVD), or a semiconductor medium, such as a Solid State Disk (SSD).

Claims (12)

1. A control method for a variable-frequency fluorine pump air conditioner is characterized by comprising the following steps:

determining a current working mode of the variable frequency air conditioner according to the current outdoor temperature;

confirming the total heat transfer temperature difference according to the current outdoor temperature, the information of the target device and/or the system load rate;

determining a working device corresponding to the current working mode;

and regulating and controlling the working devices of the variable frequency air conditioner by taking the total heat transfer temperature difference as a target.

2. The inverter fluorine pump air conditioner control method of claim 1, wherein the controlling the operating components of the inverter air conditioner with the goal of achieving the total heat transfer temperature difference comprises one or more of:

regulating and controlling the rotating speed of the external fan according to the condensation temperature value;

regulating and controlling the rotating speed of the variable frequency compressor according to the target evaporation temperature value;

regulating and controlling an expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the inner fan according to the load rate of the system; and

and regulating and controlling the rotation speed of the liquid pump according to the target evaporation temperature value.

3. The inverter fluorine pump air conditioner control method of claim 2, further comprising one or more of the following steps:

acquiring the current outdoor temperature;

acquiring the system load rate of the variable frequency air conditioner;

acquiring information of a target device of the variable frequency air conditioner;

acquiring a current air outlet/return temperature value of the variable frequency air conditioner;

determining a target evaporation temperature value according to a first mapping relation between a preset air outlet/return temperature value and an evaporation temperature value;

calculating to obtain a condensation temperature value according to the current outdoor temperature value, the current indoor temperature value and the target evaporation temperature value;

converting the condensation temperature value into a condensation pressure value;

determining a corresponding current target suction superheat degree according to the system load rate and the current outdoor temperature value;

and adjusting the working device according to the target evaporation temperature, the current target suction superheat degree, the condensation pressure value and/or the system load rate.

4. The control method of the inverter fluorine pump air conditioner according to claim 2 or 3, wherein when the current operation mode is a cooling mode, the corresponding operation devices comprise a compressor, an inner fan, an outer fan and an expansion valve;

the adjusting the working device according to the target evaporation temperature, the current target suction superheat degree, the condensation pressure value/and the system load factor comprises the following steps:

performing one or more of the following in the cooling mode: regulating and controlling the rotating speed of the compressor according to the target evaporation temperature value; regulating and controlling the opening of the expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the outer fan according to the condensation pressure value; and regulating and controlling the rotating speed of the inner fan according to the system load rate.

5. The method for controlling the inverter fluorine pump air conditioner according to claim 2 or 3, wherein when the current operation mode is a hybrid mode, the corresponding operation devices comprise the compressor, the inner fan, the outer fan, the expansion valve and a liquid pump;

the adjusting the working device according to the target evaporation temperature, the current target suction superheat degree, the condensation pressure value/and the system load factor comprises the following steps:

performing one or more of the following in the hybrid mode: regulating and controlling the rotating speed of the compressor according to the target evaporation temperature value; regulating and controlling the opening of the expansion valve according to the current target air suction superheat degree; regulating and controlling the rotating speed of the outer fan according to the condensation pressure value; regulating and controlling the rotating speed of the inner fan according to the system load rate; and regulating and controlling the rotation speed of the liquid pump according to the target evaporation temperature value.

6. The method for controlling the inverter fluorine pump air conditioner according to claim 5, wherein the controlling the liquid pump rotation speed according to the target evaporation temperature value comprises:

converting the target evaporation temperature value into a target evaporation pressure value;

and determining a pressure difference value according to the condensation pressure value and the target evaporation pressure value, and regulating and controlling the rotating speed of the liquid pump according to the pressure difference value.

7. The method for controlling a variable-frequency fluorine pump air conditioner according to any one of claims 1 to 3, wherein when the current working mode is a liquid pump driving heat pipe mode, the corresponding working devices comprise the inner fan, the outer fan, the expansion valve and a liquid pump;

the adjusting the working device according to the target evaporation temperature, the current target suction superheat degree, the condensation pressure value/and the system load factor comprises the following steps:

performing one or more of the following in the liquid pump driven heat pipe mode:

converting the target evaporation temperature value into a target evaporation pressure value;

obtaining a target condensation temperature value according to the target evaporation pressure value;

correcting and limiting the target condensation temperature value according to the current outdoor temperature and a preset condensation temperature limiting value to obtain a corrected target condensation temperature value, wherein the corrected target condensation temperature value does not exceed the preset condensation temperature limiting value;

converting the corrected target condensation temperature value into a target condensation pressure value, and regulating and controlling the rotating speed of the external fan according to the target condensation pressure value;

controlling the expansion valve to be fully opened;

and regulating and controlling the rotating speed of the inner fan and the rotating speed of the liquid pump according to the system load rate.

8. The inverter fluorine pump air conditioner control method of claim 1, wherein said determining a total heat transfer temperature difference based on said current outdoor temperature, information of said target device and/or said system duty comprises:

acquiring a third mapping relation between a preset outdoor temperature value, information of a target device and/or a system load rate and a total heat transfer temperature difference;

determining the current outdoor temperature value, the information of the target device and/or the total heat transfer temperature difference corresponding to the system load rate according to the third mapping relation; the target device comprises a condenser, an evaporator, an inner fan and an outer fan.

9. The inverter fluorine pump air conditioner control method according to claim 3, wherein the obtaining the system load factor of the inverter air conditioner comprises:

acquiring the set temperature of the variable frequency air conditioner; acquiring the current indoor temperature;

calculating to obtain a difference value between the current indoor temperature and the set temperature; and comparing the difference value with a preset deviation value to determine the system load rate of the variable frequency air conditioner.

10. A frequency conversion fluorine pump air conditioner control device is characterized by comprising:

a determination module to:

determining a current working mode of the variable frequency air conditioner according to the current outdoor temperature;

confirming the total heat transfer temperature difference according to the current outdoor temperature, the information of the target device and/or the system load rate;

determining a working device corresponding to the current working mode;

and the regulating and controlling module is used for regulating and controlling the working devices of the variable frequency air conditioner by taking the total heat transfer temperature difference as a target.

11. An electronic device, comprising a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of the inverter fluorine pump air conditioning control method of any of claims 1 to 9.

12. A computer-readable storage medium, characterized in that a computer program is stored which, when being executed by a processor, causes the processor to carry out the steps of the inverter fluorine pump air conditioning control method according to any one of claims 1 to 9.

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