The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present inventionFirst purpose be to propose a kind of control device of air-conditioning system, and the refrigerant that can ensure into evaporator is not in overheatPhenomenon, the suction temperature of compressor is not in the phenomenon of fluctuation and temperature drift.
Second object of the present invention is to propose a kind of air-conditioning system.
Third object of the present invention is to propose a kind of control method of air-conditioning system.
Fourth object of the present invention is to propose a kind of non-transitorycomputer readable storage medium.
To reach above-mentioned purpose, first aspect present invention embodiment proposes a kind of control device of air-conditioning system, describedAir-conditioning system includes compressor, outdoor heat exchanger and indoor heat exchanger, and the first port of the outdoor heat exchanger passes through the first pipeRoad is connected with the compressor, and the first port of the indoor heat exchanger is connected by the 3rd pipeline with the compressor, describedDevice includes：The N number of branch road being connected in parallel, the N number of branch road being connected in parallel are connected in parallel or series with first pipeline,Wherein, N is the integer more than 1；N number of valve member, N number of valve member are correspondingly arranged in N number of branch road, each valveComponent is used to control being turned on and off for corresponding branch road；First temperature detecting unit, first temperature detecting unit are used to examineSurvey the refrigerant temperature of the indoor heat exchanger；Second temperature detection unit, the second temperature detection unit are described for detectingThe suction temperature of compressor；Control unit, described control unit and N number of valve member, first temperature detecting unitBe respectively connected with the second temperature detection unit, described control unit be used to obtaining the suction temperature of the compressor with it is describedTemperature difference between the refrigerant temperature of indoor heat exchanger, and according to the temperature difference control N number of valve member unlatching orClose.
The control device of the air-conditioning system proposed according to embodiments of the present invention, first port and compression in outdoor heat exchangerN number of branch road in parallel or series on the first connected pipeline of machine, N number of valve member, each valve member are correspondingly arranged on N number of branch roadFor controlling being turned on and off for corresponding branch road, control unit by obtain compressor suction temperature and indoor heat exchanger it is coldTemperature difference between matchmaker's temperature, and being turned on and off for N number of valve member, thus, the embodiment of the present invention are controlled according to temperature differenceDevice can be turned on and off by control valve component to control the cold medium flux of air-conditioning system, and then ensure into entering the roomThe refrigerant of interior heat exchanger is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in that fluctuation and temperature are inclinedHigh phenomenon, so as to improve the refrigeration performance of air-conditioning, the reliability of compressor is improved, lifts the experience of user.
According to one embodiment of present invention, multiple temperature ranges, the multiple temperature range and multiple unlatching numbers are constructedAmount corresponds to respectively, wherein, described control unit is further used for obtaining the temperature range belonging to the temperature difference, and according to describedQuantity is opened corresponding to temperature range belonging to temperature difference to be controlled N number of valve member.
According to one embodiment of present invention, when the air-conditioning system is freezed, described control unit is further usedIn：When the temperature difference is more than the first temperature, any one unlatching in N number of valve member is controlled；In the temperatureWhen difference is more than or equal to the second temperature and is less than or equal to the first temperature, any M in N number of valve member is controlled to openOpen, wherein, M is the integer more than 1 and less than N；When the temperature difference is less than the second temperature, N number of valve is controlledComponent is opened.
According to one embodiment of present invention, N number of branch road is arranged at the first port of the outdoor heat exchanger, instituteThe first port that the first temperature detecting unit is arranged at the indoor heat exchanger is stated, with by detecting the of the indoor heat exchangerThe refrigerant temperature of Single port obtains the refrigerant temperature of the indoor heat exchanger.
According to one embodiment of present invention, described control unit is additionally operable to obtain the running frequency of the air-conditioning system,And N number of valve member is controlled according to the temperature difference when the running frequency of the air-conditioning system is less than predeterminated frequency.
To reach above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of air-conditioning system, including described air-conditioningThe control device of system.
The air-conditioning system proposed according to embodiments of the present invention, by the control device of air-conditioning system, guarantee, which is got in, changesThe refrigerant of hot device is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in fluctuation and temperature driftPhenomenon, so as to improve the refrigeration performance of air-conditioning, the reliability of compressor is improved, lifts the experience of user
To reach above-mentioned purpose, third aspect present invention embodiment proposes a kind of control method of air-conditioning system, describedAir-conditioning system includes compressor, outdoor heat exchanger, indoor heat exchanger, N number of branch road and N number of valve member, the outdoor heat exchangerFirst port be connected by the first pipeline with the compressor, the first port of the indoor heat exchanger by the 3rd pipeline withThe compressor is connected, the N number of branch circuit parallel connection connection, the N number of branch road being connected in parallel it is in parallel with first pipeline orIt is connected in series, N number of valve member is correspondingly arranged in N number of branch road, and each valve member is used to control corresponding branch roadIt is turned on and off, N is the integer more than 1, be the described method comprises the following steps：Detect the refrigerant temperature of the indoor heat exchanger；Detect the suction temperature of the compressor；Obtain the suction temperature of the compressor and the indoor heat exchanger refrigerant temperature itBetween temperature difference, and control N number of valve member to be turned on and off according to the temperature difference.
The control method of the air-conditioning system proposed according to embodiments of the present invention, by the refrigerant temperature for detecting indoor heat exchangerWith the suction temperature of compressor, the temperature difference between the suction temperature of compressor and the refrigerant temperature of indoor heat exchanger is obtained, andBeing turned on and off for N number of valve member is controlled according to temperature difference.Thus, the method for the embodiment of the present invention, control valve can be passed throughDoor component is turned on and off to control the cold medium flux of air-conditioning system, and then the refrigerant for ensureing to get in heat exchanger will not go outThe phenomenon now overheated, and ensure that the suction temperature of compressor is not in the phenomenon of fluctuation and temperature drift, so as to improve skyThe refrigeration performance of tune, the reliability of compressor is improved, lift the experience of user.
According to one embodiment of present invention, multiple temperature ranges, the multiple temperature range and multiple unlatching numbers are constructedAmount corresponds to respectively, described to control being turned on and off for N number of valve member according to the temperature difference, including：Obtain the temperatureSpend the temperature range belonging to difference；Quantity is opened corresponding to temperature range according to belonging to the temperature difference and controls N number of valveComponent.
According to one embodiment of present invention, it is described according to the temperature difference control when the air-conditioning system is freezedBeing turned on and off for N number of valve member is made, including：When the temperature difference is more than the first temperature, N number of valve is controlledAny one unlatching in component；When the temperature difference is more than or equal to the second temperature and is less than or equal to the first temperature, controlAny M unlatching in N number of valve member is made, wherein, M is the integer more than 1 and less than N；When the temperature difference is less thanDuring the second temperature, N number of valve member is controlled to open.
According to one embodiment of present invention, obtained by the refrigerant temperature for the first port for detecting the indoor heat exchangerThe refrigerant temperature of the indoor heat exchanger.
According to one embodiment of present invention, the control method of the air-conditioning system also includes：Obtain the air-conditioning systemRunning frequency；When the running frequency of the air-conditioning system is less than predeterminated frequency, N number of valve is controlled according to the temperature differenceDoor component.
To reach above-mentioned purpose, fourth aspect present invention embodiment proposes a kind of non-transitory computer-readable storage mediumMatter, computer program is stored thereon with, the control method of described air-conditioning system is realized when the program is executed by processor.
The non-transitory computer-readable medium proposed according to embodiments of the present invention, by the controlling party for performing air-conditioning systemMethod, ensure that getting in the refrigerant of heat exchanger is not in the phenomenon of overheat, and ensure that the suction temperature of compressor is not inFluctuation and the phenomenon of temperature drift, so as to improve the refrigeration performance of air-conditioning, improve the reliability of compressor, lift the body of userTest.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to endSame or similar label represents same or similar element or the element with same or like function.Below with reference to attachedThe embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the control device of the air-conditioning system of the embodiment of the present invention, air-conditioning system and air-conditioning system describedControl method.
Fig. 1 is the block diagram of the control device of air-conditioning system according to embodiments of the present invention.Wherein, according to Fig. 2'sEmbodiment, air-conditioning system may include compressor 1, outdoor heat exchanger 2 and indoor heat exchanger 3, and the first port of outdoor heat exchanger 2 is led toCross the first pipeline 6 with compressor 1 to be connected, the first port of indoor heat exchanger 3 is connected by the 3rd pipeline 8 with compressor 1.Enter oneStep ground, as shown in Fig. 2 the second port of outdoor heat exchanger 2 is connected by the second pipeline 7 with the second port of indoor heat exchanger 3,The first port of indoor heat exchanger 3 is connected by the 3rd pipeline 8 with compressor 1.
Specifically, as shown in Fig. 2 air-conditioning system may also include throttling arrangement 4 and four-way valve 5, wherein, the of four-way valve 5One end C is connected with the first port of outdoor heat exchanger 2, and the second end S of four-way valve 5 is connected with the gas outlet of compressor 1, i.e., outdoorThe first port of heat exchanger 2 can be connected by four-way valve 5 with the gas outlet of compressor 1, and the 3rd end E of four-way valve 5 changes with interiorThe first port of hot device 3 is connected, and the 4th end D of four-way valve 5 is connected with the gas returning port of compressor 1, i.e. the first of indoor heat exchanger 3Port can be connected by four-way valve with the gas returning port of compressor 1, and the second port of outdoor heat exchanger 2 passes through the second pipeline 7 and roomInterior heat exchanger 3 is connected, and throttling arrangement 4 is provided with the second pipeline 7.
As depicted in figs. 1 and 2, the control device of the air-conditioning system of the embodiment of the present invention includes：The N number of branch road being connected in parallel10th, N number of valve member 11, the first temperature detecting unit 30, second temperature detection unit 40 and control unit 20.
Wherein, the N number of branch road being connected in parallel is connected in parallel or series with the first pipeline 6, wherein, N is the integer more than 1；Such as shown in Fig. 2, the N number of branch road 10 and the first pipeline 6 that are connected in parallel are connected in parallel；N number of valve member 11 is correspondingly arranged in N number ofBranch road 10, each valve member can be series at corresponding branch road, and each valve member is used for unlatching or the pass for controlling corresponding branch roadClose；First temperature detecting unit 30 is used for the refrigerant temperature for detecting indoor heat exchanger 3；Second temperature detection unit 40 is used to detectThe suction temperature of compressor 1；Control unit 20 detects with N number of valve member 11, the first temperature detecting unit 30 and second temperatureUnit 40 is respectively connected with, and control unit 20 is used to obtain between the suction temperature of compressor 1 and the refrigerant temperature of indoor heat exchanger 3Temperature difference, and control N number of valve member 11 to be turned on and off according to temperature difference.
It should be noted that N number of branch road 10 can be connected in the first end C and the first of outdoor heat exchanger 2 of four-way valve 5 in parallelBetween port, the first temperature detecting unit 30 may be disposed between the first port of indoor heat exchanger 3 and four-way valve 5, the second temperatureDegree detection unit 40 may be disposed at the air entry of compressor 1, specifically, as shown in Fig. 2 N number of branch road 10 in parallel is arranged at roomAt the first port of external heat exchanger 2, the first temperature detecting unit 30 is arranged at the first port of indoor heat exchanger 3, to pass through inspectionThe refrigerant temperature for surveying the first port of indoor heat exchanger 3 obtains the refrigerant temperature of indoor heat exchanger, and then the basis of control unit 20Temperature difference between the suction temperature of compressor and the refrigerant temperature of indoor heat exchanger controls unlatching or the pass of N number of valve memberClose.
Specifically, within air-conditioning systems, the first port of outdoor heat exchanger 2 is connected by the first pipeline with compressor 1,First pipeline is connected in parallel or is connected in series N number of branch road 10, is provided with each branch road for controlling the branch road to be turned on and offValve member, the first temperature detecting unit 30 can detect the refrigerant temperature of indoor heat exchanger, second temperature detection unit in real time40 can detect the suction temperature of compressor in real time, and the first temperature detecting unit 30 and second temperature detection unit 40 will detectTemperature is sent to control unit 20, and control unit 20 is obtained between the suction temperature of compressor and the refrigerant temperature of indoor heat exchangerTemperature difference, and control N number of valve member to be turned on and off according to temperature difference.
Thereby, it is possible to being turned on and off to control the cold medium flux of air-conditioning system, Jin Erbao by control valve componentCard gets in the refrigerant of heat exchanger and is not in the phenomenon of overheat, and ensure compressor suction temperature be not in fluctuation withAnd the phenomenon of temperature drift, so as to improve the refrigerating capacity of air-conditioning, the reliability of compressor is improved, lifts the experience of user.
According to one embodiment of present invention, multiple temperature ranges, multiple temperature ranges and multiple unlatching quantity point are constructedNot Dui Ying, wherein, control unit 20 is further used for obtaining the temperature range belonging to temperature difference, and the temperature according to belonging to temperature differenceQuantity is opened corresponding to degree section to be controlled N number of valve member 11.
It should be noted that can be according to the temperature between the suction temperature of compressor 1 and the refrigerant temperature of indoor heat exchanger 3Difference constructs the temperature range of multiple temperature differences, and multiple temperature ranges can be corresponding respectively with multiple valve members unlatching quantity, i.e., everyIndividual indexing section can be corresponding with a unlatching quantity, wherein, each quantity of opening can be to be less than or equal to N integer more than 0.
Specifically, can be by presetting multiple temperature thresholds to construct multiple temperature ranges, for example, can be at least provided with a temperatureThreshold value is spent, is first temperature range when temperature is less than temperature threshold, is second when temperature is more than or equal to temperature thresholdTemperature range；And for example, two temperature thresholds can be set, be first temperature range when temperature is more than the first temperature threshold, whenTemperature is second temperature section when being more than or equal to second temperature and being less than or equal to the first temperature, is when temperature is less than second temperature3rd temperature range；For another example, three temperature thresholds can be set, be the first temperature range when temperature is more than the first temperature threshold,It is second temperature section when temperature is more than or equal to second temperature and is less than or equal to the first temperature, when temperature is more than or equal to the 3rd temperatureIt is the 3rd temperature range when spending and being less than second temperature, is the 4th temperature range when temperature is less than three temperature.Wherein, eachTemperature range has the unlatching quantity of corresponding valve member, with by control the unlatching of the corresponding valve member for opening quantity comeAdjust the cold medium flux of air-conditioning system.
Specifically, control unit 20 can obtain the refrigerant temperature of indoor heat exchanger 3 by the first temperature detecting unit 30The suction temperature of compressor 1 is obtained with second temperature detection unit 40, and then obtains refrigerant temperature and the compression of indoor heat exchangerThe temperature difference of the suction temperature of machine, and open quantity according to corresponding to temperature difference and N number of valve member 11 is controlled, that is, controlThe corresponding valve member for opening quantity is opened in N number of valve member 11.
According to one embodiment of present invention, when air-conditioning system is freezed, control unit 20 is further used for：In temperatureWhen degree difference is more than the first temperature, any one unlatching in N number of valve member 11 is controlled；It is more than or equal to second temperature in temperature differenceAnd when being less than or equal to the first temperature, any M unlatching in N number of valve member is controlled, wherein, M is more than 1 and whole less than NNumber；When temperature difference is less than second temperature, N number of valve member 11 is controlled to open.
That is, air-conditioning system is predeterminable two temperature thresholds i.e. the first temperature and second temperature, to construct threeTemperature range, wherein, the corresponding valve member of first temperature range is opened, and second temperature range corresponds to M valve groupPart is opened, and the 3rd temperature range corresponds to N number of valve member and opened.
Specifically, when air-conditioning system is freezed, control unit 20 obtains the suction temperature of compressor 1 and indoor heat exchangeTemperature difference between the refrigerant temperature of device 3, and judge the temperature range belonging to temperature difference, i.e., temperature difference and preset temperature in judgementRelation between threshold value, if temperature difference is more than the first temperature, control unit 20 then controls any one in N number of valve member 11Individual unlatching；If temperature difference is more than or equal to second temperature and is less than or equal to the first temperature, control unit 20 then controls N number of valve groupAny M unlatching in part 11；If temperature difference is less than second temperature, control unit 20 then controls N number of valve member 11 to openOpen.Wherein, second temperature is less than the first temperature.
It should be understood that the temperature difference between the suction temperature of compressor 1 and the refrigerant temperature of indoor heat exchanger 3 is smallerWhen, as indoor heat exchanger 3 needs more refrigerant to be freezed, and now, opens more valve member 11, increases refrigerant from outdoorHeat exchanger 2 flows to the flow of indoor heat exchanger 3；Make the refrigerant in indoor heat exchanger 3 sufficient, it is ensured that to be flowed to from indoor heat exchanger 3The refrigerant temperature of compressor 1 will not be higher, that is, ensures the suction temperature of compressor and will not raise.Thus, the basis of control unit 20Temperature difference between the suction temperature of compressor 1 and the refrigerant temperature of indoor heat exchanger 3 control N number of valve member 11 unlatching orClose, to change the cold medium flux of air-conditioning system.
Wherein, according to the specific embodiment of the present invention, when N is even number, M=N/2；When N is odd number, M=(N+1)/2.For example, N, which may be configured as 6, M, may be configured as 3, i.e., it is more than or equal to second temperature in temperature difference and is less than or equal to the first temperatureWhen can open 3 valve members 11, other N-3 valve members (i.e. 3 valve members 11) are turned off.
For example, the first temperature may be configured as 5 DEG C, and second temperature may be configured as 2 DEG C, for example, when air-conditioning system is carried outDuring refrigeration, control unit 20 obtains the suction temperature T of compressor 1InhaleWith the refrigerant temperature T of indoor heat exchanger 3SteamBetween temperaturePoor TInhale-TSteam, in temperature difference TInhale-TSteamMore than the first temperature (i.e. TInhale-TSteam5 DEG C of ＞) when, control unit 20 controls 6 valve groupsAny one unlatching in part 11, and control other 5 valve members 11 to be turned off；In temperature differenceInhale-TSteamMore than second temperatureAnd it is less than the first temperature (i.e. 2 DEG C≤TInhale-TSteam≤ 5 DEG C) when, control unit 20 controls any 3 in 6 valve members 11 to openOpen, and control other 3 valve members 11 to close；In temperature difference TInhale-TSteamLess than 2 DEG C of (i.e. T of second temperatureInhale-TSteam2 DEG C of ＜)When, control unit 20 controls 6 valve members 11 to open.
Further, according to one embodiment of present invention, control unit 20 is additionally operable to obtain the operation frequency of air-conditioning systemRate, and when the running frequency of air-conditioning system is less than predeterminated frequency according to the cold of the suction temperature of compressor 1 and indoor heat exchanger 3Temperature difference between matchmaker's temperature controls N number of valve member 11.
That is, when air-conditioning system is freezed, if the low-frequency operation of compressor 1, according to the air-breathing of compressor 1Temperature difference between the refrigerant temperature of temperature and indoor heat exchanger 3 controls N number of valve member 11.Transported when the low frequency of compressor 1 freezesDuring row, the refrigerant flow rate of air-conditioning system is relatively low, and coolant quantity is easily accumulated in outdoor heat exchanger 2, opens more valve member 11,Ensure that the coolant quantity for getting in heat exchanger 3 is more sufficient
In addition, according to one embodiment of present invention, control unit 20 is additionally operable to be more than in the running frequency of air-conditioning systemN number of valve member 11 is controlled to be all turned on during equal to predeterminated frequency.
That is, when air-conditioning system is freezed, if the high frequency of compressor 1 is run, outdoor heat exchanger 2 is entirely managedRoad whole participation action, i.e., N number of valve member 11 are all turned on, and are circulated with refrigerant when meeting air-conditioning system high frequency refrigeration.
In summary, the control device of the air-conditioning system proposed according to embodiments of the present invention, the first of outdoor heat exchangerN number of branch road in parallel or series on the first pipeline that port is connected with compressor, N number of valve member is correspondingly arranged on N number of branch road, oftenIndividual valve member is used to controlling being turned on and off for corresponding branch road, control unit by obtain the suction temperature of compressor with it is indoorTemperature difference between the refrigerant temperature of heat exchanger, and being turned on and off for N number of valve member is controlled according to temperature difference, thus, thisThe device of inventive embodiments can be turned on and off to control the cold medium flux of air-conditioning system by control valve component, and thenEnsure that getting in the refrigerant of heat exchanger is not in the phenomenon of overheat, and ensure that the suction temperature of compressor is not in fluctuationAnd the phenomenon of temperature drift, so as to improve the refrigeration performance of air-conditioning, the reliability of compressor is improved, lifts the experience of user.
The embodiment of the present invention also proposed a kind of air-conditioning system.
Fig. 3 is the block diagram of air-conditioning system according to embodiments of the present invention.As shown in Fig. 2 air-conditioning system 200 includesThe control device 100 of above-mentioned air-conditioning system.
The air-conditioning system proposed according to embodiments of the present invention, by the control device of air-conditioning system, guarantee, which is got in, changesThe refrigerant of hot device is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in fluctuation and temperature driftPhenomenon, so as to improve the refrigeration performance of air-conditioning, the reliability of compressor is improved, lifts the experience of user.
Fig. 4 is the flow chart of the control method of air-conditioning system according to embodiments of the present invention.Wherein, according to Fig. 2 implementationExample, air-conditioning system include compressor, outdoor heat exchanger, indoor heat exchanger, N number of branch road and N number of valve member, outdoor heat exchangerFirst port is connected by the first pipeline with compressor, and the first port of indoor heat exchanger passes through the 3rd pipeline and compressor phaseEven, N number of branch circuit parallel connection connection, the N number of branch road being connected in parallel are connected in parallel or series with the first pipeline, and N number of valve member is correspondingN number of branch road is arranged at, each valve member is used to control being turned on and off for corresponding branch road, and N is the Integer N more than 1.FurtherGround, as shown in Fig. 2 the second port of outdoor heat exchanger is connected by the second pipeline with the second port of indoor heat exchanger, it is indoorThe first port of heat exchanger is connected by the 3rd pipeline with compressor.
Specifically, as shown in Fig. 2 air-conditioning system may also include throttling arrangement and four-way valve, wherein, the first end of four-way valveIt is connected with the first port of outdoor heat exchanger, the second end of four-way valve is connected with the gas outlet of compressor, i.e. outdoor heat exchangerFirst port can be connected by four-way valve with the gas outlet of compressor, the 3rd end of four-way valve and the first port of indoor heat exchangerBe connected, the 4th end of four-way valve is connected with the gas returning port of compressor, i.e., the first port of indoor heat exchanger can by four-way valve withThe gas returning port of compressor is connected, and the second port of outdoor heat exchanger is connected by the second pipeline with indoor heat exchanger, the second pipelineOn be provided with throttling arrangement.
As shown in figure 4, the control method of the air-conditioning system of the embodiment of the present invention comprises the following steps：
S1：Detect the refrigerant temperature of indoor heat exchanger.
It should be noted that according to one embodiment of present invention, by detect indoor heat exchanger first port it is coldMatchmaker's temperature obtains the refrigerant temperature of indoor heat exchanger.Wherein, the cold of indoor heat exchanger can be detected by the first temperature detecting unitMatchmaker's temperature, the first temperature detecting unit may be disposed at the first port of indoor heat exchanger, specifically, as shown in Fig. 2 N number of branch roadIt may be disposed at the first port of outdoor heat exchanger, the first temperature detecting unit may be disposed at the first port of indoor heat exchanger.
S2：Detect the suction temperature of compressor.
It should be noted that the suction temperature of compressor can be detected by second temperature detection unit, wherein, second temperatureDetection unit may be disposed at the air entry of compressor.
S3：The temperature difference between the suction temperature of compressor and the refrigerant temperature of indoor heat exchanger is obtained, and according to temperatureDifference controls being turned on and off for N number of valve member.
Specifically, when air conditioner refrigerating is run, by detecting the refrigerant temperature of indoor heat exchanger and the air-breathing temperature of compressorDegree, the temperature difference between the suction temperature of compressor and the refrigerant temperature of indoor heat exchanger is obtained, and it is N number of according to temperature difference controlValve member is turned on and off.
Thereby, it is possible to being turned on and off to control the cold medium flux of air-conditioning system, Jin Erbao by control valve componentCard is not in the phenomenon of overheat into the refrigerant of evaporator, and ensures that the suction temperature of compressor is not in fluctuation and temperatureHigher phenomenon is spent, so as to improve the refrigerating capacity of air-conditioning, the reliability of compressor is improved, lifts the experience of user.
According to one embodiment of present invention, as shown in figure 5, constructing multiple temperature ranges, multiple temperature ranges with it is multipleOpen quantity to correspond to respectively, being turned on and off for N number of valve member is controlled according to temperature difference, including：
S101：Obtain the temperature range belonging to temperature difference.
S102：Quantity is opened corresponding to temperature range according to belonging to temperature difference and controls N number of valve member.
It should be noted that can be according to the temperature difference between the suction temperature of compressor and the refrigerant temperature of indoor heat exchangerThe temperature range of multiple temperature differences is constructed, multiple temperature ranges can be corresponding respectively with multiple valve members unlatching quantity, i.e., eachTemperature range can be corresponding with a unlatching quantity, wherein, each quantity of opening can be to be less than or equal to N integer more than 0.
Specifically, can be by presetting multiple temperature thresholds to construct multiple temperature ranges, for example, can be at least provided with a temperatureThreshold value is spent, is first temperature range when temperature is less than temperature threshold, is second when temperature is more than or equal to temperature thresholdTemperature range；And for example, two temperature thresholds can be set, be first temperature range when temperature is more than the first temperature threshold, whenTemperature is second temperature section when being more than or equal to second temperature and being less than or equal to the first temperature, is when temperature is less than second temperature3rd temperature range；For another example, three temperature thresholds can be set, be the first temperature range when temperature is more than the first temperature threshold,It is second temperature section when temperature is more than or equal to second temperature and is less than or equal to the first temperature, when temperature is more than or equal to the 3rd temperatureIt is the 3rd temperature range when spending and being less than second temperature, is the 4th temperature range when temperature is less than three temperature.Wherein, eachTemperature range has the unlatching quantity of corresponding valve member, with by control the unlatching of the corresponding valve member for opening quantity comeAdjust the cold medium flux of air-conditioning system.
Specifically, the refrigerant temperature of indoor heat exchanger can be obtained by the first temperature detecting unit and second temperature detectsUnit obtains the suction temperature of compressor, and then obtains the suction temperature of compressor and the temperature of the refrigerant temperature of indoor heat exchangerDifference, and open quantity according to corresponding to temperature difference and N number of valve member is controlled, that is, control and correspondingly opened in N number of valve memberThe valve member for opening quantity is opened.
According to one embodiment of present invention, when air-conditioning system is freezed, N number of valve member is controlled according to temperature differenceBe turned on and off, including：When temperature difference is more than the first temperature, any one unlatching in N number of valve member is controlled；Work as temperatureWhen degree difference is more than or equal to second temperature and is less than or equal to the first temperature, any M unlatching in N number of valve member is controlled, wherein,M is the integer more than 1 and less than N；When temperature difference is less than second temperature, N number of valve member is controlled to open.
That is, air-conditioning system is predeterminable two temperature thresholds i.e. the first temperature and second temperature, to construct threeTemperature range, wherein, the corresponding valve member of first temperature range is opened, and second temperature range corresponds to M valve groupPart is opened, and the 3rd temperature range corresponds to N number of valve member and opened.
Specifically, when air-conditioning system is freezed, the suction temperature of compressor and the refrigerant temperature of indoor heat exchanger are obtainedTemperature difference between degree, and judge the temperature range belonging to temperature difference, i.e., in judgement between temperature difference and preset temperature threshold valueRelation, if temperature difference is more than the first temperature, control any one unlatching in N number of valve member；If temperature difference is more thanEqual to second temperature and it is less than or equal to the first temperature, then controls any M unlatching in N number of valve member；If temperature difference is smallIn second temperature, then N number of valve member is controlled to open.Wherein, second temperature is less than the first temperature.
It should be understood that the temperature difference between the suction temperature of compressor and the refrigerant temperature of indoor heat exchanger is smallerWhen, as indoor heat exchanger needs more refrigerant to be freezed, and now, opens more valve member, increases refrigerant and is changed from outdoorHot device flows to the flow of indoor heat exchanger；Make the refrigerant in indoor heat exchanger sufficient, it is ensured that to flow to compressor from indoor heat exchangerRefrigerant temperature will not be higher, that is, ensuring the suction temperature of compressor will not raise.Thus, according to the suction temperature of compressor withTemperature difference between the refrigerant temperature of indoor heat exchanger controls being turned on and off for N number of valve member, to change air-conditioning systemCold medium flux.
Wherein, according to the specific embodiment of the present invention, when N is even number, M=N/2；When N is odd number, M=(N+1)/2.For example, N, which may be configured as 6, M, may be configured as 3, i.e., it is more than or equal to second temperature in temperature difference and is less than or equal to the first temperatureWhen can open 3 valve members, other N-3 valve members (i.e. 3 valve members) are turned off.
For example, the first temperature may be configured as 5 DEG C, and second temperature may be configured as 2 DEG C, for example, when air-conditioning system is carried outDuring refrigeration, the suction temperature T of compressor is obtainedInhaleWith the refrigerant temperature T of indoor heat exchangerSteamBetween temperature difference TInhale-TSteam, in temperatureSpend poor TInhale-TSteamMore than the first temperature (i.e. TInhale-TSteam5 DEG C of ＞) when, any one unlatching in 6 valve members is controlled, and controlOther 5 valve members are made to be turned off；In temperature differenceInhale-TSteamMore than second temperature and it is less than the first temperature (i.e. 2 DEG C≤TInhale-TSteam≤ 5 DEG C) when, any 3 unlatchings in 6 valve members are controlled, and control other 3 valve members to close；In temperature difference TInhale-TSteamLess than 2 DEG C of (i.e. T of second temperatureInhale-TSteam2 DEG C of ＜) when, 6 valve members of control are opened.
Further, according to one embodiment of present invention, as shown in fig. 6, the control method of air-conditioning system also includes：
S201：Obtain the running frequency of air-conditioning system.
S202：When the running frequency of air-conditioning system is less than predeterminated frequency, N number of valve member is controlled according to temperature difference.
That is, when air-conditioning system is freezed, if compressor low-frequency operation, according to the air-breathing temperature of compressorTemperature difference between degree and the refrigerant temperature of indoor heat exchanger controls N number of valve member.It is empty when compressor low frequency refrigerating operatonThe refrigerant flow rate of adjusting system is relatively low, and coolant quantity is easily accumulated in outdoor heat exchanger, opens more valve member, it is ensured that enters to enter the roomThe coolant quantity of interior heat exchanger is more sufficient
In addition, according to one embodiment of present invention, also when the running frequency of air-conditioning system is more than or equal to predeterminated frequencyN number of valve member is controlled to be all turned on.
That is, when air-conditioning system is freezed, if compressor high frequency is run, the whole pipeline of outdoor heat exchangerWhole participation actions, i.e., N number of valve member are all turned on, and are circulated with refrigerant when meeting air-conditioning system high frequency refrigeration.
In summary, the control method of the air-conditioning system proposed according to embodiments of the present invention, by detecting indoor heat exchangerRefrigerant temperature and compressor suction temperature, obtain between the suction temperature of compressor and the refrigerant temperature of indoor heat exchangerTemperature difference, and being turned on and off for N number of valve member is controlled according to temperature difference.Thus, the method for the embodiment of the present invention, Neng GoutongBeing turned on and off to control the cold medium flux of air-conditioning system of control valve component is crossed, and then ensures to get in the cold of heat exchangerMatchmaker is not in the phenomenon of overheat, and ensures that the suction temperature of compressor is not in the phenomenon of fluctuation and temperature drift, fromAnd improve the refrigeration performance of air-conditioning, the reliability of compressor is improved, lifts the experience of user.
The embodiment of the present invention also proposed a kind of non-transitorycomputer readable storage medium, be stored thereon with computer journeySequence, the control method of described air-conditioning system is realized when the program is executed by processor.
The non-transitory computer-readable medium proposed according to embodiments of the present invention, by the controlling party for performing air-conditioning systemMethod, ensure that getting in the refrigerant of heat exchanger is not in the phenomenon of overheat, and ensure that the suction temperature of compressor is not inFluctuation and the phenomenon of temperature drift, so as to improve the refrigerating capacity of air-conditioning, improve the reliability of compressor, lift the body of userTest.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width "," thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up timeThe orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings orPosition relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element mustThere must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importanceOr the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed orImplicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, threeIt is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connectsConnect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elementsThe connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the artFor, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second featureIt is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature existsSecond feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative ofFisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can beOne feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically showThe description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example descriptionPoint is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term notIdentical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with officeCombined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this areaArt personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specificationClose and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is exampleProperty, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentionedEmbodiment is changed, changed, replacing and modification.