Disclosure of Invention
In order to overcome the defects of the prior art, the application provides a compressor control method, a device, a medium, a compressor and an air conditioner, so as to solve the problem that a main phase sequence protector of a fixed-frequency compressor can only detect a phase failure before the compressor is started and a phase failure after the compressor is started, but the phase failure is caused in the running process of the whole compressor, and the compressor possibly cannot be protected in time under a specific working condition (such as minimum running refrigeration).
The technical scheme adopted for solving the technical problems is as follows:
in a first aspect, there is provided a compressor control method applied to a fixed frequency compressor, the method comprising:
when the compressor is started, acquiring real-time working current of the compressor and real-time working current of the whole machine of an air conditioner where the compressor is positioned;
the real-time working current of the whole machine is differenced with the real-time working current of the compressor to obtain the real-time total current of the motor of the internal machine and the main board;
and when the real-time total current is smaller than the preset total current, if the real-time working current of the compressor is 0 and the real-time working current of the whole machine is larger than or equal to the product of the preset working current of the whole machine and the first preset coefficient, controlling the compressor to stop.
Further, the method further comprises the following steps:
and when the real-time total current is smaller than the preset total current, if the real-time working current of the compressor is not 0 and is larger than the product of the preset working current of the compressor and a second preset coefficient, controlling the compressor to stop.
Further, the method further comprises the following steps:
when the real-time total current is smaller than the preset total current, if the real-time working current of the compressor is 0 and the real-time working current of the whole machine is smaller than the product of the preset working current of the whole machine and the first preset coefficient, acquiring the ambient temperature of the internal machine and the working mode of the air conditioner;
and controlling whether the compressor is stopped or not according to the ambient temperature of the internal machine and the working mode of the air conditioner.
Further, the controlling whether the compressor is stopped according to the environmental temperature of the internal machine and the working mode of the air conditioner includes:
if the working mode is a refrigeration mode, when the difference value between the ambient temperature of the internal machine and the preset ambient temperature of the internal machine is smaller than or equal to the preset difference value, the compressor is controlled to stop;
and when the difference value between the ambient temperature of the internal machine and the preset ambient temperature of the internal machine is larger than the preset difference value, controlling the compressor to stop.
Further, the controlling whether the compressor is stopped according to the environmental temperature of the internal machine and the working mode of the air conditioner includes:
if the working mode is a heating mode, when the difference value between the preset internal machine environment temperature and the internal machine environment temperature is smaller than or equal to the preset difference value, controlling the compressor to stop;
and when the difference value between the preset internal machine environment temperature and the internal machine environment temperature is larger than the preset difference value, controlling the compressor to stop.
Further, the method further comprises the following steps:
and when the real-time total current is greater than or equal to the preset total current within the continuous first preset time period, if the real-time working current of the compressor is greater than or equal to the product of the preset working current of the compressor and a third preset coefficient, controlling the compressor to stop and sending a serious visceral blockage alarm.
Further, the method further comprises the following steps:
and when the real-time total current is larger than or equal to the preset total current within the continuous first preset time period, if the real-time working current of the compressor is smaller than the product of the preset working current of the compressor and a fourth preset coefficient, controlling the compressor to continue to operate and sending a slight filth blockage alarm to a user, wherein the fourth preset coefficient is smaller than the third preset coefficient.
Further, the method further comprises the following steps:
acquiring the working mode, the internal machine environment temperature and the external machine environment temperature of the air conditioner;
and determining the magnitude of the preset total current based on the working mode, the internal machine environment temperature and the external machine environment temperature.
Further, the method further comprises the following steps:
when the compressor is controlled to stop for a second time period, the whole air conditioner is controlled to be started so as to detect the phase failure of the compressor;
and after the phase failure of the compressor is detected, controlling the compressor not to start, and sending a phase failure alarm of the compressor.
Further, after the compressor is started, acquiring the real-time working current of the compressor and the real-time working current of the whole machine of the air conditioner where the compressor is located, including:
when the air conditioner is started, if the wiring of a user is correct and the real-time working current of the compressor is not 0, acquiring the real-time working current of the compressor and the real-time working current of the whole machine of the air conditioner where the compressor is located after a third preset duration.
In a second aspect, there is provided a compressor control apparatus for use with a fixed frequency compressor, the apparatus comprising:
the real-time current acquisition module is used for acquiring the real-time working current of the compressor and the real-time working current of the whole machine of the air conditioner where the compressor is positioned after the compressor is started;
the real-time current calculation module is used for differencing the real-time working current of the whole machine and the real-time working current of the compressor to obtain the real-time total current of the motor of the internal machine and the main board of the internal machine;
and the compressor control module is used for controlling the compressor to stop if the real-time working current of the compressor is 0 and the real-time working current of the whole machine is larger than or equal to the product of the preset working current of the whole machine and a first preset coefficient when the real-time total current is smaller than the preset total current.
In a third aspect, there is provided a computer readable storage medium comprising:
at least one memory and at least one processor;
the memory stores executable instructions of the processor;
the processor performs the method described above when the executable instructions are executed.
In a fourth aspect, a compressor is provided, applying the method described above.
In a fifth aspect, an air conditioner is provided, including the compressor described above.
The beneficial effects are that:
the technical scheme provides a compressor control method, a device, a medium, a compressor and an air conditioner, wherein the compressor control method is applied to a fixed-frequency compressor, firstly, after the compressor is started, real-time working current of the compressor and real-time working current of a whole machine are obtained, then, real-time total current is calculated, when the real-time total current is smaller than preset total current, the air conditioner is free from filth blockage phenomenon, if the real-time working current of the compressor is 0 at the moment, and the real-time working current of the whole machine is larger than or equal to the product of the preset real-time working current of the whole machine and a first preset coefficient, the phase interruption of the real-time working current of the compressor is measured is indicated. At the moment, the shutdown of the compressor needs to be controlled in time, the situation that the phase failure cannot be protected in time when the compressor is operated is avoided, and whether the phase failure is detected in time and the protection is provided when the compressor is operated after the compressor is started.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail with reference to the accompanying drawings and examples. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, based on the examples herein, which are within the scope of the protection sought by those of ordinary skill in the art without undue effort, are intended to be encompassed by the present application.
The reason for the phase failure of the fixed-frequency compressor in the existing air conditioner is generally due to the problems of wiring errors or poor wiring and the like, and the problems can be detected when the compressor is started, so that the detection is carried out when the compressor is started in the prior art. However, in actual operation, the phase failure occurs when the compressor is running. The prior art has no way to detect the compressor while it is running.
In order to solve the above problems, referring to fig. 1, an embodiment of the present application provides a compressor control method, which is applied to a fixed frequency compressor, and includes:
s11: when the compressor is started, acquiring real-time working current of the compressor and real-time working current of the whole machine of an air conditioner where the compressor is positioned; specifically, when the air conditioner is started, if the user is correctly wired and the real-time working current of the compressor is not 0, after a third preset duration, the real-time working current of the compressor and the real-time working current of the whole machine of the air conditioner where the compressor is located are obtained. When the user miswires, the compressor is not operated. If the user is properly wired but the wiring is not in good contact, or if there is a shortage of the compressor, the real-time operating current of the compressor is equal to 0 (continuous detection is required for a period of time, such as 20 seconds to 1 minute). At this time, a fault code needs to be displayed to remind the user to replace the phase sequence or rewire.
When the wiring is correct and the compressor is defect-free, the air conditioner starts to operate, and after the temperature of the air conditioner operates, the real-time working current of the whole machine and the real-time working current of the compressor are respectively detected through the mutual inductor. And simultaneously, the ambient temperature of the motor of the air conditioner and the air conditioner mode of the motor are recorded.
S12: the real-time working current of the whole machine is differenced with the real-time working current of the compressor to obtain the real-time total current of the motor of the internal machine and the main board; because the number of the real-time total currents of the inner and outer motors and the main board is more, if the measurement is acquired, the data is more, and the error is relatively larger, the real-time total currents of the inner and outer motors and the main board can be conveniently, rapidly and accurately obtained by directly differencing the real-time working current of the whole machine with the real-time working current of the compressor.
S13: and when the real-time total current is smaller than the preset total current, if the real-time working current of the compressor is 0 and the real-time working current of the whole machine is larger than or equal to the product of the preset working current of the whole machine and the first preset coefficient, controlling the compressor to stop. When the real-time total current is smaller than the preset total current, the air conditioner is not blocked, and if the real-time working current of the compressor is 0 and the real-time working current of the whole machine is larger than or equal to the product of the preset working current of the whole machine and the first preset coefficient, the phase loss of the compressor measured by the current transformer for measuring the real-time working current of the compressor is indicated. At the moment, the shutdown of the compressor needs to be controlled in time, the situation that the phase failure cannot be protected in time when the compressor is operated is avoided, and whether the phase failure is detected in time and the protection is provided when the compressor is operated after the compressor is started. Wherein the first preset factor has a value in the range of 1.1 to 3 (1.1 and 3 are not available).
And when the real-time total current is smaller than the preset total current, if the real-time working current of the compressor is not 0 and is larger than the product of the preset working current of the compressor and a second preset coefficient, controlling the compressor to stop. If the real-time working current of the compressor is not 0, the phase of the compressor measured by the current transformer for measuring the real-time working current of the compressor is not in a phase shortage, but when the real-time working current of the compressor is larger than the product of the preset working current of the compressor and the second preset coefficient, the phase shortage exists in the other two phases of the compressor, and the real-time working current of the compressor in the phase measured by the current sensor is larger. Wherein the second preset coefficient is not available in the range of 1.6 to 2.1,1.6 and 2.1.
When the compressor is controlled to stop for a second time period due to the phase failure, the whole air conditioner is controlled to be started so as to detect the phase failure of the compressor; and after the phase failure of the compressor is detected, controlling the compressor not to start, and sending a phase failure alarm of the compressor. The second time period is set according to actual needs, and is exemplified by 3 minutes. The control of restarting the air conditioner after stopping for the second time is to detect the compressor again by using the existing startup phase failure detection function, whether the compressor is in a phase failure or not at present, if the compressor is not in a phase failure, restarting the air conditioner, and if the compressor is still in a phase failure, controlling the compressor not to start. While waiting for the second period of time is to avoid starting immediately after the compressor is shut down. Frequent start-stop can cause compressor failure, reduces compressor life.
When the real-time total current is smaller than the preset total current, if the real-time working current of the compressor is 0 and the real-time working current of the whole machine is smaller than the product of the preset working current of the whole machine and the first preset coefficient, acquiring the ambient temperature of the internal machine and the working mode of the air conditioner; at this time, it is explained that the ambient temperature of the air conditioner indoor unit reaches the user set temperature. The compressor is in a standby state, which belongs to the normal condition of the compressor. And controlling whether the compressor is stopped or not according to the ambient temperature of the internal machine and the working mode of the air conditioner.
Wherein, whether the compressor is controlled to stop according to the environmental temperature of the internal machine and the working mode of the air conditioner comprises the following steps:
if the working mode is a refrigeration mode, when the difference value between the ambient temperature of the internal machine and the preset ambient temperature of the internal machine is smaller than or equal to the preset difference value, controlling the compressor to stop, namely maintaining a standby state; when the difference value between the ambient temperature of the internal machine and the preset ambient temperature of the internal machine is larger than the preset difference value, the compressor is controlled to stop, namely, the compressor is stopped, and the compressor is restarted after being stopped from a standby state.
If the working mode is a heating mode, when the difference value between the preset internal machine environment temperature and the internal machine environment temperature is smaller than or equal to the preset difference value, controlling the compressor to stop, namely maintaining a standby state; when the difference value between the preset internal machine environment temperature and the internal machine environment temperature is larger than the preset difference value, the compressor is controlled not to stop, namely, the compressor is stopped from being in a standby state and is restarted.
With the use of an air conditioner, phenomena of filth blockage, such as quilt, film or dust covering the condenser, can occur; when the air conditioner external unit is suddenly seriously blocked, the motor load is increased due to poor heat dissipation of the condenser, and the motor current rises instantaneously. If the judgment is carried out only according to the real-time working current of the whole machine and the real-time working current of the compressor, misjudgment can occur. Therefore, the total current of the internal and external machines and the main board is introduced, and whether the air conditioner is dirty or not is judged through the real-time total current. Therefore, under the condition that no filth blockage occurs, the judgment is performed by increasing the real-time working current and the real-time working current of the compressor. Erroneous judgment can be effectively prevented.
Specifically, when the real-time total current is greater than or equal to the preset total current within a continuous first preset time period, if the real-time working current of the compressor is greater than or equal to the product of the preset working current of the compressor and a third preset coefficient, the compressor is controlled to stop, and a serious dirty blockage alarm is sent. At this time, the current of the compressor is abnormal, which indicates that the whole compressor is in overload operation, the surface is seriously blocked, the compressor must be immediately controlled to stop operation, and the user is informed of the blocking. The first preset time length is set according to actual needs. The first preset time period is, for example, 10s or more. The third preset coefficient is in the range of 1.5 to 2.5, and 1.5 and 2.5 can be obtained.
When the real-time total current is larger than or equal to the preset total current within the continuous first preset time period, if the real-time working current of the compressor is smaller than the product of the preset working current of the compressor and a fourth preset coefficient, the compressor is controlled to continue to operate and a slight filth blockage alarm is sent to a user, at the moment, the air conditioner is indicated to be filth blocked, but the safety of the air conditioner is not affected, and in order to enable the user to experience better, the compressor is not controlled to stop, and continuous monitoring is kept. Wherein the fourth preset coefficient is smaller than the third preset coefficient. The fourth preset coefficient is in the range of 1.0 to 1.5, wherein 1.0 can be obtained.
In practical use, when the air conditioner operates in different working modes and different indoor and outdoor environments, the currents of the indoor unit and the outdoor unit are different. Therefore, when the preset total current is set, the magnitude of the preset total current needs to be determined based on the operation mode, the internal machine environment temperature and the external machine environment temperature. Specifically, a table is stored in advance, and in each working mode of each model in the table, each internal machine environment temperature and each external machine environment temperature correspond to a preset total current, and when the table is used, the preset total current is obtained from the table according to the actual working mode, the internal machine environment temperature and the external machine environment temperature.
According to the compressor control method, after the compressor is started, the real-time working current of the compressor and the real-time working current of the whole machine are obtained, then the real-time total current is calculated, whether the air conditioner has a dirty blocking phenomenon or not is judged according to the size relation between the real-time total current and the preset total current, when the dirty blocking phenomenon does not exist, whether the compressor is out of phase with the real-time working current of the whole machine or not and whether the compressor needs to be controlled or not is judged, and when the compressor is out of phase, the compressor can be timely controlled to stop. The phase failure can not be timely protected when the compressor is operated, and whether the phase failure is detected and the protection is provided when the compressor is operated after the compressor is started.
Based on the same inventive concept, the present application provides a compressor control device applied to a fixed frequency compressor, as shown in fig. 2, the device includes:
the real-time current acquisition module 21 is used for acquiring the real-time working current of the compressor and the real-time working current of the whole machine of the air conditioner where the compressor is positioned after the compressor is started; specifically, when the air conditioner is started, if the user connects correctly and the real-time working current of the compressor is not 0, the real-time current obtaining module 21 obtains the real-time working current of the compressor and the real-time working current of the whole machine of the air conditioner where the compressor is located after a third preset time period.
And the real-time current calculation module 22 is used for differencing the real-time working current of the whole machine and the real-time working current of the compressor to obtain the real-time total current of the motor of the internal machine, the motor of the external machine and the main board.
And the compressor control module 23 is configured to control the compressor to stop if the real-time working current of the compressor is 0 and the real-time working current of the whole machine is greater than or equal to a product of the preset working current of the whole machine and a first preset coefficient when the real-time total current is less than the preset total current.
In addition, when the real-time total current is less than the preset total current, if the real-time working current of the compressor is not 0 and is greater than the product of the preset working current of the compressor and the second preset coefficient, the compressor control module 23 controls the compressor to stop.
When the compressor is controlled to stop for a second period of time due to the two conditions, the compressor control module 23 controls the complete machine of the air conditioner to be started so as to perform phase failure detection on the compressor; and after the phase failure of the compressor is detected, controlling the compressor not to start, and sending a phase failure alarm of the compressor.
As an optional implementation manner of the embodiment of the present invention, when the real-time total current is smaller than a preset total current, if the real-time working current of the compressor is 0 and the real-time working current of the whole machine is smaller than the product of the preset working current of the whole machine and the first preset coefficient, the ambient temperature of the internal machine and the working mode of the air conditioner are obtained; the compressor control module 23 controls whether the compressor is stopped according to the ambient temperature of the internal machine and the operation mode of the air conditioner.
Wherein, whether the compressor is controlled to stop according to the environmental temperature of the internal machine and the working mode of the air conditioner comprises the following steps: if the working mode is a refrigeration mode, when the difference value between the ambient temperature of the internal machine and the preset ambient temperature of the internal machine is smaller than or equal to the preset difference value, the compressor is controlled to stop; and when the difference value between the ambient temperature of the internal machine and the preset ambient temperature of the internal machine is larger than the preset difference value, controlling the compressor to stop.
If the working mode is a heating mode, when the difference value between the preset internal machine environment temperature and the internal machine environment temperature is smaller than or equal to the preset difference value, controlling the compressor to stop; and when the difference value between the preset internal machine environment temperature and the internal machine environment temperature is larger than the preset difference value, controlling the compressor to stop.
In one embodiment, when the real-time total current is greater than or equal to the preset total current for a first preset duration, if the real-time working current of the compressor is greater than or equal to the product of the preset working current of the compressor and a third preset coefficient, the compressor control module 23 controls the compressor to stop and sends a serious filth blockage alarm.
In another embodiment, when the real-time total current is greater than or equal to the preset total current for a first preset duration, if the real-time working current of the compressor is less than the product of the preset working current of the compressor and a fourth preset coefficient, the compressor control module 23 controls the compressor to continue to operate and sends a slight filth blockage alarm to the user, wherein the fourth preset coefficient is less than the third preset coefficient.
As a preferred implementation manner of the embodiment of the present invention, the method further includes: acquiring the working mode, the internal machine environment temperature and the external machine environment temperature of the air conditioner; and determining the magnitude of the preset total current based on the working mode, the internal machine environment temperature and the external machine environment temperature.
According to the compressor control device provided by the embodiment of the invention, after the compressor is started, the real-time current acquisition module acquires the real-time working current of the compressor and the real-time working current of the whole machine, then the real-time current calculation module calculates the real-time total current, the compressor control module judges whether the air conditioner has no filth blockage phenomenon according to the relation between the real-time total current and the preset total current, when the filth blockage phenomenon does not exist, the compressor can be timely controlled to stop according to whether the real-time working current of the compressor is phase-failure with the real-time working current of the whole machine and whether the compressor needs to be controlled or not. The phase failure can not be timely protected when the compressor is operated, and whether the phase failure is detected and the protection is provided when the compressor is operated after the compressor is started.
Based on the same inventive concept, the present application also provides a computer-readable storage medium comprising:
at least one memory and at least one processor;
the memory stores executable instructions of the processor;
the processor, when executed, performs the compressor control method provided by the above embodiments.
The computer readable storage medium provided by the embodiment of the application stores executable instructions of a processor through a memory, when the executable instructions are executed, the processor can acquire real-time working current of the compressor and real-time working current of the whole machine after the compressor is started, then calculate real-time total current, judge whether an air conditioner has no filth blockage phenomenon according to the magnitude relation between the real-time total current and preset total current, and when the filth blockage phenomenon does not exist, judge whether the compressor is required to be controlled to stop according to whether the real-time working current of the compressor is phase-failure with the real-time working current of the whole machine or not, and can timely control the compressor to stop when the compressor is phase-failure. The phase failure can not be timely protected when the compressor is operated, and whether the phase failure is detected and the protection is provided when the compressor is operated after the compressor is started.
Based on the same inventive concept, the application also provides a compressor, and the compressor control method provided by the embodiment is applied.
According to the compressor provided by the embodiment of the application, by applying the compressor control method provided by the embodiment, after the compressor is started, the real-time working current of the compressor and the real-time working current of the whole machine can be obtained, then the real-time total current is calculated, whether the air conditioner has a dirty blocking phenomenon or not is judged according to the relation between the real-time total current and the preset total current, when the dirty blocking phenomenon does not exist, whether the compressor is out of phase with the real-time working current of the whole machine or not and whether the compressor is required to be controlled or not is judged, and when the compressor is out of phase, the compressor can be controlled to stop in time. The phase failure can not be timely protected when the compressor is operated, and whether the phase failure is detected and the protection is provided when the compressor is operated after the compressor is started.
Based on the same inventive concept, the application also provides an air conditioner, which comprises the compressor provided by the embodiment.
According to the air conditioner provided by the embodiment of the application, after the compressor is started, the real-time working current of the compressor and the real-time working current of the whole machine can be obtained, then the real-time total current is calculated, whether the air conditioner has a dirty blocking phenomenon or not is judged according to the size relation between the real-time total current and the preset total current, when the dirty blocking phenomenon does not exist, whether the compressor is out of phase with the real-time working current of the whole machine or not and whether the compressor needs to be controlled or not is judged, and when the compressor is out of phase, the compressor can be timely controlled to stop. The phase failure can not be timely protected when the compressor is operated, and whether the phase failure is detected and the protection is provided when the compressor is operated after the compressor is started.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "plurality" means at least two.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
It is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.