CN113834202B - Air conditioner control method, air conditioner and storage medium - Google Patents
Air conditioner control method, air conditioner and storage medium Download PDFInfo
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- CN113834202B CN113834202B CN202111041261.4A CN202111041261A CN113834202B CN 113834202 B CN113834202 B CN 113834202B CN 202111041261 A CN202111041261 A CN 202111041261A CN 113834202 B CN113834202 B CN 113834202B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses an air conditioner control method, an air conditioner and a storage medium, wherein the method comprises the following steps: when the low-temperature dehumidification condition is met, the air conditioner is controlled to dehumidify according to the first dehumidification parameter, and the bypass electromagnetic valve is opened. The bypass solenoid valve is opened to realize the diversion of the refrigerant flowing into the indoor unit, so that a part of refrigerant flows back to the compressor through the oil return flow path provided with the bypass solenoid valve, the return air temperature of the air return port of the compressor is increased, the bottom temperature of the compressor is increased, the superheat degree of the compressor is improved, the compressor is prevented from being failed, and the operation reliability of the compressor is maintained.
Description
Technical Field
The present invention relates to the field of air conditioners, and in particular, to an air conditioner control method, an air conditioner, and a storage medium.
Background
The dehumidification (Air conditioning dehumidification) of the air conditioner means that the whole air conditioner is in a dehumidification operation state, and at the moment, the fan of the indoor unit is operated slowly, so that the air conditioner is convenient for condensing moisture in the air into liquid to achieve the dehumidification effect.
At present, when the air conditioner dehumidifies in a low-temperature environment, the refrigerant flowing back to the compressor from the air return port can reduce the body temperature of the compressor, and the lower ambient temperature leads to lower superheat degree of the compressor, so that the operation reliability of the compressor is affected.
Disclosure of Invention
The embodiment of the application aims to solve the technical problem that the reliability of the operation of a compressor is affected by dehumidification of the air conditioner in a low-temperature environment by providing an air conditioner control method, the air conditioner and a storage medium.
The embodiment of the application provides a control method of an air conditioner, wherein an outdoor unit of the air conditioner is provided with an oil return flow path communicated with an exhaust port and an air return port of a compressor, and a bypass electromagnetic valve is arranged on the oil return flow path; the air conditioner control method comprises the following steps:
when the low-temperature dehumidification condition is met, the air conditioner is controlled to dehumidify according to a first dehumidification parameter, wherein the first dehumidification parameter is smaller than a second dehumidification parameter of the air conditioner when the low-temperature dehumidification condition is not met;
and opening the bypass electromagnetic valve.
In an embodiment, after the step of controlling the air conditioner to dehumidify according to the first dehumidification parameter, the method further includes:
acquiring the superheat degree of the compressor;
and executing the step of opening the bypass electromagnetic valve when the superheat degree is smaller than a preset threshold value.
In an embodiment, after the step of opening the bypass solenoid valve is performed when the superheat degree is smaller than a preset threshold value, the method further includes:
acquiring the superheat degree of the compressor;
and when the superheat degree is smaller than the preset threshold value, increasing the operation frequency of the compressor.
In one embodiment, the step of increasing the operating frequency of the compressor comprises:
acquiring a preset frequency adjustment value;
and increasing the operating frequency according to the preset frequency adjustment value.
In an embodiment, after the step of increasing the operating frequency of the compressor, the method further comprises:
acquiring the adjustment times of the operation frequency;
when the adjustment times are smaller than the preset times, returning to execute the step of acquiring the superheat degree;
when the adjustment times are greater than or equal to the preset times, starting timing;
and after the timing time length reaches the preset time length, controlling the air conditioner to stop.
In an embodiment, when the adjustment frequency is less than a preset frequency, the step of returning to execute the step of obtaining the superheat degree includes:
when the adjustment times are smaller than preset times, obtaining the superheat degree of the compressor;
and when the superheat degree is smaller than the preset threshold value, returning to execute the step of acquiring the superheat degree.
In one embodiment, the step of starting timing when the adjustment number is greater than or equal to the preset number includes:
when the adjustment times are greater than or equal to the preset times, acquiring the superheat degree of the compressor;
and when the superheat degree is smaller than the preset threshold value, starting timing.
In one embodiment, the step of obtaining the superheat of the compressor includes:
acquiring the bottom temperature of the compressor and the coil temperature of the outdoor heat exchanger;
and determining the superheat degree of the compressor according to the bottom temperature and the coil temperature.
In addition, in order to achieve the above object, the present invention also provides an air conditioner comprising: the air conditioner control system comprises a memory, a processor and an air conditioner control program which is stored in the memory and can run on the processor, wherein the air conditioner control program realizes the steps of the air conditioner control method when being executed by the processor.
In addition, in order to achieve the above object, the present invention also provides a storage medium having stored thereon an air conditioner control program which, when executed by a processor, implements the steps of the air conditioner control method described above.
The technical scheme of the air conditioner control method, the air conditioner and the storage medium provided in the embodiment of the application has at least the following technical effects or advantages:
due to the adoption of the technical scheme that when the low-temperature dehumidification condition is met, the air conditioner is controlled to dehumidify according to the first dehumidification parameter, and the bypass electromagnetic valve is opened, the refrigerant flowing into the indoor unit is split by opening the bypass electromagnetic valve, so that a part of refrigerant flows back to the compressor through the oil return flow path provided with the bypass electromagnetic valve, the air return temperature of the air return port of the compressor is increased, the bottom temperature of the compressor is increased, the superheat degree of the compressor is improved, the technical problem that the operation reliability of the compressor is influenced due to the fact that the air conditioner dehumidifies in a low-temperature environment is solved, the occurrence of faults of the compressor is avoided, and the operation reliability of the compressor is maintained.
Drawings
FIG. 1 is a schematic diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart of a first embodiment of an air conditioner control method according to the present invention;
FIG. 3 is a schematic diagram of an air conditioner system;
FIG. 4 is a flowchart of a second embodiment of an air conditioner control method according to the present invention;
FIG. 5 is a flowchart illustrating a third embodiment of an air conditioner control method according to the present invention;
fig. 6 is a flowchart illustrating a fourth embodiment of an air conditioner control method according to the present invention.
Detailed Description
In order that the above-described aspects may be better understood, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
This application is in order to solve the air conditioner and dehumidifies under low temperature environment, the technical problem of the reliability of compressor operation is influenced, when satisfying low temperature dehumidification condition, the control air conditioner is dehumidified according to first dehumidification parameter, and open bypass solenoid valve's technical scheme, it shunts to have realized flowing into the refrigerant of indoor set through opening bypass solenoid valve, make a part of refrigerant flow back to the compressor through the return oil flow path that is provided with bypass solenoid valve, thereby the return air temperature of the return air mouth of compressor has been increased, and then the bottom temperature of compressor has been increased, make the superheat degree of compressor improve, avoid the compressor to break down, be favorable to maintaining the reliability of compressor operation.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a hardware running environment according to an embodiment of the present invention.
It should be noted that fig. 1 is a schematic structural diagram of a hardware operating environment of an air conditioner.
As shown in fig. 1, the air conditioner may include: a processor 1001, such as a CPU, memory 1005, user interface 1003, network interface 1004, communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the air conditioner structure shown in fig. 1 is not limiting of the air conditioner and may include more or fewer components than shown, or may combine certain components, or may be a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and an air conditioner control program may be included in the memory 1005 as one type of storage medium. The operating system is a program for managing and controlling the hardware and software resources of the air conditioner, and the air conditioner control program and other software or running of the program.
In the air conditioner shown in fig. 1, the user interface 1003 is mainly used for connecting a terminal, and performs data communication with the terminal; the network interface 1004 is mainly used for a background server and is in data communication with the background server; the processor 1001 may be used to invoke an air conditioner control program stored in the memory 1005.
In this embodiment, an air conditioner includes: a memory 1005, a processor 1001, and an air conditioner control program stored on the memory 1005 and executable on the processor, wherein:
when the processor 1001 calls the air conditioner control program stored in the memory 1005, the following operations are performed:
when the low-temperature dehumidification condition is met, the air conditioner is controlled to dehumidify according to a first dehumidification parameter, wherein the first dehumidification parameter is smaller than a second dehumidification parameter of the air conditioner when the low-temperature dehumidification condition is not met;
and opening the bypass electromagnetic valve.
The embodiments of the present invention provide embodiments of a method for controlling an air conditioner, and it should be noted that although a logic sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown or described herein.
As shown in fig. 2, in a first embodiment of the present application, the air conditioner control method of the present application includes the steps of:
step S210: when the low-temperature dehumidification condition is met, controlling the air conditioner to dehumidify according to the first dehumidification parameter;
step S220: and opening the bypass electromagnetic valve.
As shown in fig. 3, fig. 3 is a schematic diagram of an air conditioner system, in which 01 is a compressor, 02 is an oil separator, 03 is a bypass solenoid valve, 04 is an oil return capillary, 05 is an oil return capillary, 06 is a vapor-liquid separator, 07 is a four-way valve, 08 is a high-voltage switch, 09 is an outdoor condenser, 10 is an electronic expansion valve, 11 is a filter, 12 is a liquid side pipe, 13 is an indoor evaporator of an indoor unit, 14 is an indoor evaporator of an indoor unit, 15 is a vapor side pipe, 16 is a low-voltage switch, 20 is a bulb of an exhaust temperature of the compressor, 21 is a bulb of a bottom temperature of the compressor, 22 is a bulb of a coil temperature of an outdoor heat exchanger (outdoor condenser), 23 is a bulb of an outdoor ambient temperature, 24 is a bulb of an evaporation temperature of the indoor evaporator, and 25 is a bulb of an evaporation temperature of the indoor evaporator. The air conditioner comprises an outdoor unit and at least one indoor unit, wherein the outdoor unit of the air conditioner is provided with an oil return flow path which is communicated with an exhaust port and an air return port of the compressor 01, and a bypass electromagnetic valve 03 is arranged on the oil return flow path, wherein a closed loop formed by the exhaust port, the oil separator 02, the bypass electromagnetic valve 03, an oil return capillary tube 04 and the air return port of the compressor 01 is an oil return flow path, and a closed loop formed by the exhaust port, the oil separator 02, the oil return capillary tube 05 and the air return port of the compressor 01 is also an oil return flow path.
The air conditioner is used for refrigerating and dehumidifying, namely, the evaporating temperature of an indoor heat exchanger (an evaporator) is reduced below the dew point temperature in the refrigerating process of the air conditioner, when indoor air is sucked by a fan of the indoor machine and passes through the indoor heat exchanger, water vapor in the air is condensed into water, then the water is led into a drain pipe to be discharged outdoors, part of water in the indoor air is removed in this way, and the humidity of the air is reduced.
In this real-time example, the low-temperature dehumidification condition may be determined according to the ambient temperature and the ambient humidity, if the detected ambient temperature is lower and the detected ambient humidity is higher, it is determined that the current environment meets the low-temperature dehumidification condition, i.e. the air conditioner starts to perform low-temperature dehumidification. The low-temperature dehumidification condition can also be determined according to a dehumidification instruction sent by a user. The user can send a dehumidification command to the indoor unit through the remote controller after the air conditioner is started, wherein the dehumidification command comprises a normal-temperature dehumidification command and a low-temperature dehumidification command, and if the user selects to send the low-temperature dehumidification command, the low-temperature dehumidification condition is determined to be met, and the air conditioner starts to dehumidify at low temperature; if the user selects to send the normal-temperature dehumidification instruction, the normal-temperature dehumidification condition is determined to be met, and the air conditioner starts normal-temperature dehumidification.
Specifically, the dehumidification parameters of different dehumidification conditions are preset, and when the corresponding dehumidification conditions are met, the air conditioner is controlled to dehumidify according to the corresponding dehumidification parameters. The dehumidification parameter is the set evaporation temperature of the indoor heat exchanger, and can be understood as the target evaporation temperature, and the target evaporation temperature corresponding to the low-temperature dehumidification condition is a first preset value, for example, the first preset value is 2 ℃; the target evaporation temperature corresponding to the normal temperature dehumidification condition is a second preset value, if the second preset value is 9 ℃, the first preset value is smaller than the second preset value.
In this real-time example, when the low-temperature dehumidification condition is satisfied, the air conditioner is controlled to dehumidify according to the target evaporation temperature which is the first preset value, and then, the bypass solenoid valve on the oil return flow path is opened. The air conditioner is controlled to dehumidify according to the target evaporation temperature which is the first preset value in a low-temperature environment, and the evaporation temperature of the indoor heat exchanger is lower in the low-temperature dehumidification period, so that water vapor in the air can be condensed into water and removed from the air, and the aim of low-temperature dehumidification is fulfilled. In order to enable the evaporation temperature of the indoor heat exchanger to reach the target evaporation temperature during low-temperature dehumidification, the quantity of the refrigerant entering the indoor heat exchanger is large, and because the evaporation area of the indoor heat exchanger is fixed, excessive refrigerant cannot be completely evaporated in the indoor heat exchanger, the non-evaporated refrigerant can be evaporated at the outlet of the indoor heat exchanger, so that the outlet temperature of the indoor heat exchanger is lower, the return air temperature of the compressor can be reduced by the refrigerant flowing back to the return air port of the compressor, the superheat degree of the bottom of the compressor is reduced, even the bottom of the compressor is free from the superheat degree, wet compression of the compressor, namely liquid hammer of the compressor is easily caused, and the operation reliability of the compressor is affected. The superheat degree of the compressor is the temperature difference between the bottom temperature of the compressor and the coil temperature of the outdoor heat exchanger, the coil temperature of the outdoor heat exchanger is specifically the intermediate temperature of the coil of the outdoor heat exchanger, and the superheat degree of the compressor is the superheat degree of the bottom of the compressor.
The first dehumidification parameter is smaller than the second dehumidification parameter of the air conditioner when the low-temperature dehumidification condition is not met. And if the low-temperature dehumidification condition is not met and the dehumidification condition is met, namely the normal-temperature dehumidification condition is met, the air conditioner is controlled to dehumidify according to the second dehumidification parameter. The second dehumidification parameter is also the set evaporation temperature of the indoor heat exchanger, and can be understood as the target evaporation temperature, wherein the second dehumidification parameter is larger than the first dehumidification parameter, namely the target evaporation temperature of the indoor heat exchanger when the low-temperature dehumidification condition is met is smaller than the target evaporation temperature of the indoor heat exchanger when the normal-temperature dehumidification condition is met, namely the air conditioner is controlled to reduce the dew point temperature when the air conditioner dehumidifies according to the first dehumidification parameter, so that dehumidification in a low-temperature environment is realized.
After the air conditioner is controlled to dehumidify according to the target evaporation temperature which is the first preset value, a bypass electromagnetic valve on an oil return flow path is opened to split the refrigerant flowing into the indoor unit, namely, one part of the refrigerant flowing out of an exhaust port of the compressor flows back to the compressor through the oil separator, the bypass electromagnetic valve, an oil return capillary tube and an air return port of the compressor, and the other part of refrigerant enters the indoor unit. So a part of refrigerant flowing back to the compressor through the bypass electromagnetic valve increases the return air temperature of the return air port of the compressor, and further increases the bottom temperature of the compressor, so that the superheat degree of the compressor is improved, the compressor is prevented from being failed, and the operation reliability of the compressor is maintained.
As shown in fig. 4, in the second embodiment of the present application, step S210 further includes the following steps:
step S211: and obtaining the superheat degree of the compressor.
Step S212: judging whether the superheat degree is smaller than a preset threshold value, and if so, executing step S220; if not, the air conditioner is controlled to normally operate, namely the air conditioner is controlled to dehumidify according to the dehumidification parameters.
Step S220: and opening the bypass electromagnetic valve.
In this embodiment, when the air conditioner is controlled to perform low-temperature dehumidification according to the dehumidification parameters in the low-temperature environment, the bottom temperature of the compressor and the coil temperature of the outdoor heat exchanger are obtained in real time, and the superheat degree of the compressor, that is, the superheat degree of the compressor=bottom temperature-coil temperature, is calculated according to the bottom temperature and the coil temperature. If the superheat degree of the compressor is smaller than a preset threshold value, opening a bypass electromagnetic valve; and if the superheat degree of the compressor is larger than or equal to a preset value, which indicates that the compressor is not at risk of failure, the air conditioner is controlled to continue low-temperature dehumidification according to the dehumidification parameters. The preset threshold value is a preset expected superheat degree, and if the superheat degree of the compressor obtained through calculation with the coil temperature is greater than or equal to the expected superheat degree, the compressor is free of fault risk, and the compressor can normally operate. If the superheat degree of the compressor obtained through calculation of the bottom temperature and the coil temperature is smaller than the expected superheat degree, the bypass electromagnetic valve is opened, so that the return air temperature of the return air port of the compressor is increased, the bottom temperature of the compressor is increased, the superheat degree of the compressor is improved, the superheat degree of the compressor reaches the expected superheat degree, and the compressor is prevented from being failed.
As shown in fig. 5, in the third embodiment of the present application, step S220 further includes the following steps:
step S221: and obtaining the superheat degree of the compressor.
Step S222: judging whether the superheat degree is smaller than the preset threshold value, if so, executing step S223; if not, controlling the air conditioner to normally operate, namely on the basis of opening the bypass electromagnetic valve, and controlling the air conditioner to dehumidify according to the dehumidification parameters.
Step S223: increasing the operating frequency of the compressor.
In this embodiment, after the bypass solenoid valve is opened, the bottom temperature of the compressor and the coil temperature of the outdoor heat exchanger are acquired in real time, and the superheat degree of the compressor is calculated according to the bottom temperature and the coil temperature. If the superheat degree is greater than or equal to a preset threshold value, which indicates that the compressor is not at risk of failure, the bypass electromagnetic valve is kept open, and the air conditioner is controlled to dehumidify according to the dehumidification parameters. If the superheat degree is smaller than the preset threshold value, the current operating frequency of the compressor is obtained, and then the current operating frequency of the compressor is adjusted, namely the current operating frequency of the compressor is increased. Increasing the current operating frequency of the compressor means increasing a preset frequency adjustment value based on the current operating frequency, for example, the current operating frequency is F0, the preset frequency adjustment value is 1Hz, and the adjusted operating frequency is F1, f1=f0+1 Hz. Therefore, on the basis of opening the bypass electromagnetic valve, the current operating frequency of the compressor is increased, and the amount of refrigerant discharged by the compressor is increased, so that the amount of refrigerant flowing back to the compressor through the oil return flow path and the amount of refrigerant entering the indoor unit are both increased. After the operation frequency of the compressor is increased, the exhaust temperature is increased, the amount of the discharged refrigerant is increased, and the temperature of the refrigerant flowing back to the compressor through the oil return flow path is higher, so that the air return temperature is increased, the bottom temperature is increased, namely the superheat degree of the compressor is increased, and the operation reliability of the compressor is maintained. After the refrigerant quantity discharged by the compressor is increased, the refrigerant quantity entering the indoor heat exchanger is increased, namely the evaporation temperature of the indoor heat exchanger is lower, and the dew point temperature is reduced, so that low-temperature dehumidification can be better performed.
As shown in fig. 6, in the fourth embodiment of the present application, step S223 further includes the following steps:
step S224: acquiring the adjustment times of the operation frequency;
step S225: judging whether the adjustment times are smaller than preset times, if so, executing step S221; if not, step S226 is performed.
Step S226: a timer is started.
Step S227: and after the timing time length reaches the preset time length, controlling the air conditioner to stop.
In this embodiment, after the current operating frequency of the compressor is increased, the number of times of adjustment of the operating frequency of the compressor is obtained, whether the number of times of adjustment is smaller than the preset number of times is determined, if the number of times of adjustment is smaller than the preset number of times, step S211 is continuously performed, that is, the bottom temperature of the compressor and the coil temperature of the outdoor heat exchanger are continuously obtained, the superheat degree of the compressor is calculated according to the bottom temperature and the coil temperature, then whether the superheat degree is smaller than the preset threshold value is determined, if yes, the operating frequency of the compressor is further increased, after the operating frequency of the compressor is increased, the exhaust temperature is increased, the amount of refrigerant discharged by the compressor is increased, the refrigerant temperature of the refrigerant flowing back to the compressor through the oil return flow path is higher, the return air temperature is increased, and then the bottom temperature of the compressor is increased, that is, the superheat degree of the compressor is increased, and the reliability of the operation of the compressor is facilitated to be maintained.
Specifically, the preset time length is preset, and under the premise of opening the bypass electromagnetic valve and controlling the air conditioner to dehumidify according to the first dehumidification parameter, if the operation frequency of the compressor is at least adjusted for the preset time length and the operation frequency is adjusted for the preset time length according to the preset number of times, the air conditioner is controlled to dehumidify at low temperature, so that moisture in indoor air can be basically removed, and indoor dehumidification is completed. Therefore, when it is determined that the number of adjustments is greater than or equal to the preset number of times, the timer is started. When the adjustment times are judged to be greater than or equal to the preset times, starting timing specifically comprises continuously obtaining the bottom temperature of the compressor and the coil temperature of the outdoor heat exchanger when the adjustment times are greater than or equal to the preset times, calculating the superheat degree of the compressor according to the bottom temperature and the coil temperature, judging whether the superheat degree is smaller than a preset threshold value, if so, continuously controlling the operation of the air conditioner according to the adjustment operation frequency of the first preset times on the premise of starting the bypass electromagnetic valve and controlling the air conditioner to dehumidify according to the first dehumidification parameters, starting timing, and determining that the indoor dehumidification is finished after the timing time reaches the preset time, and further controlling the air conditioner to stop.
Assuming that the preset duration is 30 minutes, the operation frequency of the compressor before the non-adjustment is F0, the preset times are 4 times, the preset frequency adjustment value is 1Hz, if the adjustment times are greater than or equal to 4 times, the operation frequency of the compressor after the 4 th adjustment is F4, and f4=f0+1hz+1hz+1hz=f0+4 Hz, on the premise of opening the bypass solenoid valve and controlling the air conditioner to dehumidify according to the first dehumidification parameter, the air conditioner is continuously controlled to operate according to f0+4Hz for 30 minutes, and the air conditioner is controlled to stop after 30 minutes, so that the reliability of the operation of the compressor is maintained on the premise of suppressing the superheat degree of the compressor during the low-temperature dehumidification of the air conditioner.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (4)
1. The control method of the air conditioner is characterized in that an outdoor unit of the air conditioner is provided with an oil return flow path communicated with an exhaust port and an air return port of a compressor, and the oil return flow path is provided with a bypass electromagnetic valve; the air conditioner control method comprises the following steps:
when the low-temperature dehumidification condition is met, the air conditioner is controlled to dehumidify according to a first dehumidification parameter, and when the low-temperature dehumidification condition is not met, the air conditioner is controlled to dehumidify according to a second dehumidification parameter, wherein the second dehumidification parameter is larger than the first dehumidification parameter;
acquiring the superheat degree of the compressor;
when the superheat degree is smaller than a preset threshold value, opening the bypass electromagnetic valve;
acquiring the superheat degree of the compressor;
when the superheat degree is smaller than the preset threshold value, a preset frequency adjusting value is obtained;
increasing the operating frequency of the compressor according to the preset frequency adjustment value;
acquiring the adjustment times of the operation frequency;
when the adjustment times are smaller than preset times, obtaining the superheat degree of the compressor;
when the superheat degree is smaller than the preset threshold value, returning to execute the step of acquiring the superheat degree;
when the adjustment times are greater than or equal to the preset times, acquiring the superheat degree of the compressor;
when the superheat degree is smaller than the preset threshold value, starting timing;
and after the timing time length reaches the preset time length, controlling the air conditioner to stop.
2. The method of claim 1, wherein the step of obtaining the degree of superheat of the compressor comprises:
acquiring the bottom temperature of the compressor and the coil temperature of the outdoor heat exchanger;
and determining the superheat degree of the compressor according to the bottom temperature and the coil temperature.
3. An air conditioner, comprising: a memory, a processor and an air conditioner control program stored on the memory and operable on the processor, which when executed by the processor, implements the steps of the air conditioner control method of any one of claims 1-2.
4. A storage medium having stored thereon an air conditioner control program which, when executed by a processor, implements the steps of the air conditioner control method of any one of claims 1-2.
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