Air conditioner, method and device for controlling air conditioner and computer readable storage medium

Abstract

The invention relates to the technical field of air conditioners, and discloses an air conditioner which comprises a liquid pipe block valve connected between a throttling element of the air conditioner and an indoor heat exchanger of the air conditioner. The air pipe block valve is connected between a compressor of the air conditioner and the indoor heat exchanger; and one end of the unloading valve is connected between the liquid pipe block valve and the throttling element, and the other end of the unloading valve is connected between the compressor and the air pipe block valve. Therefore, when the liquid pipe cut-off valve and the air pipe cut-off valve are closed and the unloading valve is opened, the indoor side and the outdoor side can be communicated. The pressure is balanced between the indoor side and the outdoor side, explosion caused by the fact that the pressure cannot be relieved due to the existence of the pressure difference between the indoor side and the outdoor side can be prevented, and then the safety of the air conditioner is improved. The invention further discloses a method and device for controlling the air conditioner and a computer readable storage medium.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, for example, to an air conditioner, a method and apparatus for controlling an air conditioner, and a computer-readable storage medium. Background Art

[0002] R32 refrigerant is widely used in air conditioners due to its environmental friendliness, high energy efficiency, and low cost. However, R32 refrigerant is flammable and explosive, so any refrigerant leak during use requires prompt treatment.

[0003] Related art discloses an air conditioning system for preventing refrigerant leakage, comprising: a liquid-side control valve disposed between a throttling device of the air conditioning system and an evaporator of the air conditioning system; a gas-side control valve disposed between a compressor of the air conditioning system and the evaporator of the air conditioning system; a refrigerant concentration detector disposed on the evaporator for detecting the refrigerant concentration in the space surrounding the evaporator; and a controller for selectively controlling the operating states of the liquid-side control valve and the gas-side control valve based on the detection value of the refrigerant concentration detector. The air conditioning system also includes a pressure relief valve, one end of which is connected between the liquid-side control valve and the condenser, and the other end of which is connected between the gas-side control valve and the four-way valve of the air conditioning system.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] Although the relevant technology can recycle the refrigerant, it can only balance the pressure inside the outdoor unit when the pressure relief valve is opened. If the pressure is too high, the outdoor unit will face the risk of explosion, which will lead to safety hazards of the air conditioner.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Summary of the Invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] Embodiments of the present disclosure provide an air conditioner, a method and apparatus for controlling the air conditioner, and a computer-readable storage medium to improve the safety of the air conditioner.

[0009] In some embodiments, the air conditioner includes: a liquid shutoff valve connected between the air conditioner's throttling element and the air conditioner's indoor heat exchanger; a gas shutoff valve connected between the air conditioner's compressor and the indoor heat exchanger; and an unloading valve connected at one end between the liquid shutoff valve and the throttling element and at the other end between the compressor and the gas shutoff valve. Thus, when the liquid shutoff valve and the gas shutoff valve are closed and the unloading valve is opened, the indoor and outdoor sides can be connected. In this way, balancing the pressure between the indoor and outdoor sides can prevent explosions caused by the inability to release pressure due to the pressure difference between the indoor and outdoor sides, thereby improving the safety of the air conditioner.

[0010] In some embodiments, the liquid pipe shutoff valve is a weak-current electromagnetic shutoff valve, and / or the gas pipe shutoff valve is a weak-current electromagnetic shutoff valve. A weak-current electromagnetic shutoff valve has no pressure difference on both sides, which facilitates smooth refrigerant recovery.

[0011] In some embodiments, a backup power supply is electrically connected to the liquid shutoff valve and / or the tracheal shutoff valve to provide power to the liquid shutoff valve and / or the tracheal shutoff valve. Weak-current electromagnetic shutoff valves require electrical power to close. Therefore, the backup power supply is used to power the liquid shutoff valve and the tracheal shutoff valve, allowing them to close smoothly.

[0012] In some embodiments, the air conditioner further includes a refrigerant detector, one disposed on the outdoor unit and one disposed on the indoor unit of the air conditioner, or one disposed on the side of the pipeline connecting the outdoor unit and multiple indoor units of the air conditioner, for detecting refrigerant concentration; wherein the liquid pipe shut-off valve and the gas pipe shut-off valve are controllably opened or closed based on the refrigerant concentration detected by the refrigerant detector. When the detected refrigerant concentration exceeds a concentration threshold, a refrigerant leak alarm signal is triggered, thereby prompting the air conditioner to implement a preventive strategy.

[0013] In some embodiments, the method for controlling an air conditioner is applied to the aforementioned air conditioner, and the method includes: upon receiving a refrigerant leak alarm signal, determining the source of the refrigerant leak alarm signal; determining a target recovery location based on the source of the refrigerant leak alarm signal; and controlling the operating state of the air conditioner based on the target recovery location. Determining the source of the refrigerant leak alarm signal upon receiving the refrigerant leak alarm signal allows for more accurate determination of the location of the refrigerant leak, thereby improving the safety of the air conditioner. The target recovery location is then determined based on the source of the refrigerant leak alarm signal, thereby controlling the operating state of the air conditioner to recover the refrigerant to a suitable location. This prevents refrigerant leakage and further improves the safety of the air conditioner.

[0014] In some embodiments, determining the target recovery location based on the source of the refrigerant leakage alarm signal includes: if the refrigerant leakage alarm information originates from the indoor unit or the online pipeline, determining the target recovery location to be the outdoor heat exchanger; if the refrigerant leakage alarm information originates from the outdoor unit, determining the target recovery location to be the indoor heat exchanger and its auxiliary pipelines. In this way, the refrigerant can be recovered to a location where no leakage has occurred, thereby preventing further refrigerant leakage.

[0015] In some embodiments, controlling the operating state of the air conditioner based on the target recovery location includes: when the target recovery location is an outdoor heat exchanger: controlling the air conditioner to operate in cooling mode; controlling the liquid pipe shutoff valve to close, and controlling the operating frequency of the compressor and / or the wind speed of the outdoor fan; and controlling the gas pipe shutoff valve to close when a preset refrigerant recovery exit condition is met. In this way, refrigerant is recovered to the outdoor heat exchanger.

[0016] In some embodiments, controlling the operating state of the air conditioner based on the target recovery location includes: when the target recovery location is the indoor heat exchanger and its associated piping: determining the installation location of the outdoor unit; and controlling the operating state of the air conditioner based on the installation location. Depending on the outdoor unit installation location, the air conditioner can be controlled to execute different operating strategies to quickly prevent refrigerant leakage.

[0017] In some embodiments, the operating state of the air conditioner is controlled based on the installation location, including: if the installation location is well-ventilated, closing the liquid shutoff valve and the gas shutoff valve. Good ventilation quickly reduces the refrigerant concentration, thereby avoiding any danger. In this case, refrigerant recovery can be omitted; the shutoff valves can be directly closed to block the flow of refrigerant and prevent further refrigerant leakage. Refrigerant in the leaking location can be quickly dissipated by ventilation. If the installation location is poorly ventilated, the air conditioner is controlled to operate in heating mode. The liquid shutoff valve is closed, and the operating frequency of the compressor and / or the wind speed of the outdoor fan are controlled. If preset refrigerant recovery exit conditions are met, the gas shutoff valve is closed. This prevents the accumulation of leaked refrigerant in poorly ventilated areas and completes the refrigerant recovery to the indoor heat exchanger and its associated piping.

[0018] In some embodiments, controlling the operating frequency of the compressor includes controlling the compressor to operate at a preset frequency. Alternatively, the operating frequency of the compressor is controlled based on the ambient temperature of the target recovery location. This can promote condensation of the refrigerant into a liquid state, thereby expediting the recovery of the refrigerant.

[0019] In some embodiments, the pressure threshold or the preset time is adjusted according to the ambient temperature of the refrigerant leak location. In this way, the refrigerant recovery process can be appropriately extended or shortened to avoid incomplete refrigerant recovery or prolonged vacuuming of the pipeline.

[0020] In some embodiments, the apparatus for controlling an air conditioner includes: a processor and a memory storing program instructions, and the processor is configured to execute the aforementioned method for controlling an air conditioner when running the program instructions.

[0021] In some embodiments, the computer-readable storage medium stores program instructions, and when the program instructions are executed, the aforementioned method for controlling the air conditioner is executed.

[0022] The air conditioner, method and apparatus for controlling the air conditioner, and computer-readable storage medium provided in the embodiments of the present disclosure can achieve the following technical effects:

[0023] The liquid shutoff valve is connected between the throttling element and the indoor heat exchanger, while the gas shutoff valve is connected between the compressor and the indoor heat exchanger. The first end of the unloading valve is connected between the liquid shutoff valve and the throttling element, and the second end is connected between the compressor and the gas shutoff valve. This allows the indoor and outdoor sides to communicate when the liquid and gas shutoff valves are closed and the unloading valve is open. This balances the pressure between the indoor and outdoor sides, preventing explosions caused by the lack of pressure relief between the two sides and improving the safety of the air conditioner.

[0024] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0026] Figure 1 is a schematic diagram of an air conditioner provided by an embodiment of the present disclosure;

[0027] Figure 2 is a schematic diagram of a method for controlling an air conditioner provided by an embodiment of the present disclosure;

[0028] Figure 3 is a schematic diagram of another method for controlling an air conditioner provided by an embodiment of the present disclosure;

[0029] Figure 4 is a schematic diagram of a method for controlling the operating state of an air conditioner according to a target recovery position provided by an embodiment of the present disclosure;

[0030] Figure 5 is a schematic diagram of another method for controlling the operating state of an air conditioner according to a target recovery position provided by an embodiment of the present disclosure;

[0031] Figure 6 is a schematic diagram of a device for controlling an air conditioner provided by an embodiment of the present disclosure;

[0032] Figure 7 is a schematic diagram of another device for controlling an air conditioner provided by an embodiment of the present disclosure;

[0033] Figure 8 Schematic diagram of an air conditioner provided by an embodiment of the present disclosure.

[0034] Reference numerals:

[0035] 1. Air conditioner; 11. Compressor; 12. Indoor heat exchanger; 13. Outdoor heat exchanger; 14. Throttling element; 15. Liquid pipe shutoff valve; 16. Gas pipe shutoff valve; 17. Unloading valve; 18. Liquid pipe mechanical on-off valve; 19. Gas pipe mechanical on-off valve; 20. Backup power supply; 21. Refrigerant detector;

[0036] 60. Apparatus for controlling an air conditioner; 61. First determining module; 62. Second determining module; 63. Control module;

[0037] 70. Device for controlling an air conditioner; 71. Processor; 72. Memory; 73. Communication interface; 74. Bus. DETAILED DESCRIPTION

[0038] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0039] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0040] Unless otherwise stated, the term "plurality" means two or more.

[0041] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0042] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0043] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0044] Combine Figure 1 As shown, an embodiment of the present disclosure provides an air conditioner 1, comprising: a compressor 11, an indoor heat exchanger 12, an outdoor heat exchanger 13, a throttling element 14, a liquid pipe shut-off valve 15, a gas pipe shut-off valve 16, and an unloading valve 17. The compressor 11, the outdoor heat exchanger 13, the throttling element 14, and the indoor heat exchanger 12 are sequentially connected to form a refrigerant circulation loop.

[0045] The liquid shutoff valve 15 is connected between the throttling element 14 and the indoor heat exchanger 12, and the gas shutoff valve 16 is connected between the compressor 11 and the indoor heat exchanger 12. The first end of the unloading valve 17 is connected between the liquid shutoff valve and the throttling element 14, and the second end is connected between the compressor 11 and the gas shutoff valve 16.

[0046] During operation of the air conditioner 1, when the liquid pipe shutoff valve 15 and the gas pipe shutoff valve 16 are abnormally closed and the outdoor pressure is too high, the unloading valve 17 opens to connect the indoor and outdoor sides, thereby balancing the pressure between the indoor and outdoor sides.

[0047] In the air conditioner 1 provided by the embodiment of the present disclosure, the liquid shut-off valve 15 is connected between the throttling element 14 and the indoor heat exchanger 12, and the gas shut-off valve 16 is connected between the compressor 11 and the indoor heat exchanger 12. The first end of the unloading valve 17 is connected between the liquid shut-off valve and the throttling element 14, and the second end is connected between the compressor 11 and the gas shut-off valve 16. In this way, when the liquid shut-off valve 15 and the gas shut-off valve 16 are closed and the unloading valve 17 is opened, the indoor and outdoor sides can be connected. In this way, the pressure is balanced between the indoor and outdoor sides, which can prevent the indoor and outdoor sides from exploding due to the inability to release pressure due to the pressure difference, thereby improving the safety of the air conditioner 1.

[0048] Optionally, the air conditioner 1 further includes a liquid pipe mechanical on-off valve 18 and a gas pipe mechanical on-off valve 19. The liquid pipe mechanical on-off valve 18 is connected between the indoor heat exchanger 12 and the liquid pipe shut-off valve 15. The gas pipe mechanical on-off valve 19 is connected between the compressor 11 and the indoor heat exchanger 12. Furthermore, the connection point of the first end of the unloading valve 17 is located between the liquid pipe mechanical on-off valve 18 and the liquid pipe shut-off valve 15. The liquid pipe mechanical on-off valve 18 and the gas pipe mechanical on-off valve 19 automatically open or close in response to force.

[0049] Optionally, the liquid pipe shutoff valve 15 is a weak-current electromagnetic shutoff valve, and / or the gas pipe shutoff valve 16 is a weak-current electromagnetic shutoff valve. There is no pressure difference on both sides of the weak-current electromagnetic shutoff valve, which is conducive to smooth refrigerant recovery.

[0050] Optionally, when the liquid shutoff valve 15 and the tracheal shutoff valve 16 are weak-current electromagnetic shutoff valves, the air conditioner 1 further includes a backup power supply 20. The backup power supply 20 is electrically connected to the liquid shutoff valve 15 and the tracheal shutoff valve 16 and is used to supply power to the liquid shutoff valve 15 and the tracheal shutoff valve 16. This is because after a power outage in the air conditioner 1, the liquid shutoff valve 15 and the tracheal shutoff valve 16 must maintain a shutoff function. However, weak-current electromagnetic shutoff valves require electrical power to close. Therefore, the backup power supply 20 is used to supply power to the liquid shutoff valve 15 and the tracheal shutoff valve 16, allowing them to close smoothly.

[0051] Optionally, the backup power supply 20 is a charge-discharge type power supply.

[0052] Optionally, the backup power supply 20 is a capacitor-type power supply.

[0053] Optionally, the liquid pipe shutoff valve 15 is a high-voltage electromagnetic shutoff valve, and / or the gas pipe shutoff valve 16 is a high-voltage electromagnetic shutoff valve. High-voltage electromagnetic shutoff valves can automatically close after the air conditioner 1 loses power, eliminating the need for a backup power supply 20.

[0054] Optionally, the air conditioner 1 further includes a refrigerant detector 21. Multiple refrigerant detectors 21 may be provided, one each for the outdoor unit and the indoor unit. Alternatively, if the air conditioner 1 is a multi-split system, the refrigerant detectors 21 may be provided on the outdoor unit and the piping between the multiple indoor units. The refrigerant detectors 21 are configured to detect refrigerant concentration. When the detected refrigerant concentration exceeds a threshold, a refrigerant leak alarm is triggered, prompting the air conditioner to implement preventive measures.

[0055] The processor of the air conditioner 1 is in communication with the refrigerant detector 21. When the processor receives a refrigerant leakage alarm signal, the processor first controls the liquid pipe shut-off valve 15 to close, and after the refrigerant recovery is completed, controls the gas pipe shut-off valve 16 to close.

[0056] Based on the aforementioned air conditioner, combined Figure 2As shown, an embodiment of the present disclosure provides a method for controlling an air conditioner, comprising:

[0057] S101: When receiving a refrigerant leakage alarm signal, the processor determines a source of the refrigerant leakage alarm signal.

[0058] S102: The processor determines a target recovery location based on the source of the refrigerant leakage alarm signal.

[0059] S103: The processor controls the operating state of the air conditioner according to the target recovery position.

[0060] Because detectors are located in multiple locations, when the air conditioner's processor receives a refrigerant leak signal, it first determines the source of the refrigerant leak alarm. For example, it determines whether the refrigerant leak alarm originated from the outdoor unit or the indoor unit. Based on the source of the refrigerant leak alarm, the target recovery location is determined, determining whether the refrigerant needs to be recovered to the outdoor unit or the indoor unit. Based on the target recovery location, the air conditioner's operating state is controlled to achieve refrigerant recovery.

[0061] The method for controlling an air conditioner provided by the embodiments of the present disclosure determines the source of a refrigerant leak alarm signal upon receiving it. This allows for more accurate identification of the leak location, improving the safety of the air conditioner. Based on the source of the refrigerant leak alarm signal, the target recovery location is then determined, thereby controlling the air conditioner's operating state to recover the refrigerant to a suitable location. This prevents refrigerant leaks and further improves the safety of the air conditioner.

[0062] Furthermore, the method for controlling an air conditioner provided in an embodiment of the present disclosure is applicable to the aforementioned air conditioner. When the liquid pipe shutoff valve and the gas pipe shutoff valve are closed and the unloading valve is opened, the indoor and outdoor sides of the air conditioner can be connected, balancing the pressure between the indoor and outdoor sides. This prevents explosions caused by the inability to release the pressure difference between the indoor and outdoor sides, thereby improving the safety of the air conditioner. Furthermore, this method can further improve the safety of the air conditioner.

[0063] Optionally, combined Figure 3 As shown, the embodiment of the present disclosure provides another method for controlling an air conditioner, including:

[0064] S101: When receiving a refrigerant leakage alarm signal, the processor determines a source of the refrigerant leakage alarm signal.

[0065] S112: When the refrigerant leakage alarm information originates from the indoor unit or the online pipeline side, the processor determines that the target recovery location is the outdoor heat exchanger.

[0066] S122: When the refrigerant leakage alarm information originates from the outdoor unit, the processor determines that the target recovery location is the indoor heat exchanger and the auxiliary pipelines of the indoor heat exchanger.

[0067] S103: The processor controls the operating state of the air conditioner according to the target recovery position.

[0068] When determining the target recovery location, if the refrigerant leak alarm originates from the indoor unit, or if the alarm originates from the connected piping in a multi-split air conditioner, the target recovery location is the outdoor heat exchanger. If the refrigerant leak alarm originates from the outdoor unit, the target recovery location is the indoor heat exchanger and the associated piping of the indoor unit heat exchanger. This allows the refrigerant to be recovered to a location where no leakage has occurred, thereby preventing further refrigerant leakage.

[0069] Combine Figure 4 As shown, in S103, the processor controls the operating state of the air conditioner according to the target recovery position, including:

[0070] S113: When the target recovery location is the outdoor heat exchanger, the processor controls the air conditioner to operate in a cooling mode.

[0071] S123, the processor controls the liquid pipe shutoff valve to close, and controls the operating frequency of the compressor and / or the wind speed of the outdoor fan.

[0072] S133: When the preset refrigerant recovery exit condition is met, the processor controls the gas pipe shut-off valve to close.

[0073] If the target recovery location is the outdoor heat exchanger, the air conditioner is controlled to operate in cooling mode to begin refrigerant recovery. The liquid shutoff valve is closed to prevent further refrigerant from entering the indoor area, allowing the outdoor heat exchanger to function as a container. Simultaneously, the compressor's operating frequency and / or the outdoor fan's wind speed are controlled to rapidly recover the refrigerant. When the preset refrigerant recovery exit conditions are met, the gas shutoff valve is closed. This completes the recovery of the refrigerant to the outdoor heat exchanger. Finally, the compressor and outdoor fan are shut down, completing the recovery process.

[0074] Combine Figure 5 As shown, in S103, the processor controls the operating state of the air conditioner according to the target recovery position, including:

[0075] S143: When the target recovery location is the indoor heat exchanger and the attached pipes of the indoor heat exchanger, the processor determines the installation location of the outdoor unit.

[0076] S153: The processor controls the operating state of the air conditioner according to the installation location.

[0077] If the target recovery location is the indoor heat exchanger and its associated piping, first determine the outdoor unit's installation location. Unlike the more restricted indoor unit installation location, the outdoor unit's installation location is more flexible, allowing installation outdoors or in the basement. Depending on the outdoor unit's location, the air conditioner can be controlled to implement different operating strategies to quickly prevent refrigerant leaks.

[0078] Optionally, at S153, the processor controls the operating state of the air conditioner according to the installation location, including:

[0079] When the processor is installed in a well-ventilated location, control the liquid pipe shut-off valve and the gas pipe shut-off valve to be closed.

[0080] If the installation location is in a poorly ventilated location:

[0081] The processor controls the air conditioner to operate in heating mode.

[0082] The processor controls the liquid pipe shutoff valve to close, and controls the operating frequency of the compressor and / or the wind speed of the outdoor fan.

[0083] When the preset refrigerant recovery exit conditions are met, the processor controls the gas pipe shut-off valve to close.

[0084] If the outdoor unit is installed in a well-ventilated location, such as outdoors, simply close the liquid and gas shutoff valves. This is because good ventilation quickly reduces refrigerant concentration, thus preventing any potential danger. In this case, refrigerant recovery can be omitted; simply close the shutoff valves to prevent further refrigerant leakage. Any refrigerant in the leaking area will dissipate quickly due to ventilation.

[0085] If the outdoor unit is installed in a poorly ventilated location, such as a basement, the air conditioner operates in cooling mode and begins to recover the refrigerant to prevent the accumulation of leaked refrigerant. The liquid shutoff valve is then closed to prevent further refrigerant from entering the outdoor area, allowing the indoor heat exchanger and its associated piping to function as a container. Simultaneously, the compressor's operating frequency and / or the outdoor fan's wind speed are controlled to rapidly recover the refrigerant. When the preset refrigerant recovery exit conditions are met, the gas shutoff valve is closed. This completes the recovery of the refrigerant to the indoor heat exchanger and its associated piping. Finally, the compressor and outdoor fan are shut down, completing the recovery process.

[0086] Optionally, the preset refrigerant recovery exit condition is: the low pressure value of the air conditioner is less than the pressure threshold, or the recovery time reaches a preset time.

[0087] Optionally, the pressure threshold is 0.2 MPa.

[0088] Optionally, the preset duration is 3 minutes to 5 minutes.

[0089] Optionally, the processor adjusts the pressure threshold or the preset time according to the ambient temperature of the refrigerant leakage location. Specifically, if the refrigerant leaks indoors, the pressure threshold or the preset time is adjusted according to the indoor ambient temperature. If the refrigerant leaks outdoors, the pressure threshold or the preset time is adjusted according to the outdoor ambient temperature. The higher the ambient temperature of the refrigerant leakage location, the greater the pressure threshold or the longer the preset time. To prevent, the lower the ambient temperature of the refrigerant leakage location, the smaller the pressure threshold or the shorter the preset time. In this way, based on the ambient temperature of the leakage location, the pressure threshold and the preset time are appropriately adjusted to appropriately extend or shorten the refrigerant recovery process, to avoid incomplete refrigerant recovery or prolonged vacuuming of the pipeline.

[0090] Optionally, the processor controls the operating frequency of the compressor, including:

[0091] The processor controls the compressor to operate at a preset frequency. Alternatively, the processor controls the operating frequency of the compressor according to the ambient temperature of the target recovery location.

[0092] When recycling refrigerant, one way is to control the compressor to run at a fixed preset frequency. Another way is to control the operating temperature of the compressor based on the ambient temperature of the target recovery location. Optionally, if the refrigerant is recovered to the outdoor side (outdoor heat exchanger), the higher the outdoor ambient temperature, the higher the operating frequency of the compressor is controlled. If the refrigerant is recovered to the indoor side (the indoor heat exchanger and the auxiliary pipelines of the indoor heat exchanger), the higher the outdoor ambient temperature, the higher the operating frequency of the compressor is controlled. In this way, the condensation of the refrigerant into liquid can be promoted to complete the recovery of the refrigerant as soon as possible.

[0093] Optionally, the processor controls the wind speed of the outdoor fan, including:

[0094] The processor controls the outdoor fan to run at the highest wind speed.

[0095] When recovering refrigerant, the outdoor fan is controlled to run at the highest wind speed to further promote refrigerant condensation and thus speed up the refrigerant recovery.

[0096] Combine Figure 6 As shown, an embodiment of the present disclosure provides an apparatus 60 for controlling an air conditioner, comprising: a first determination module 61, a second determination module 62, and a control module 63. The first determination module 61 is configured to, upon receiving a refrigerant leak alarm signal, determine the source of the refrigerant leak alarm signal. The second determination module 62 is configured to determine a target recovery location based on the source of the refrigerant leak alarm signal. The control module 63 is configured to control the operating state of the air conditioner based on the target recovery location.

[0097] When a refrigerant leak alarm signal is received, the device 60 for controlling an air conditioner, provided in an embodiment of the present disclosure, determines the source of the refrigerant leak alarm signal. This allows for more accurate identification of the location of the refrigerant leak, thereby improving the safety of the air conditioner. Based on the source of the refrigerant leak alarm signal, the target recovery location is then determined, thereby controlling the operating state of the air conditioner to recover the refrigerant to a suitable location. This prevents refrigerant leaks and further improves the safety of the air conditioner.

[0098] Combine Figure 7 As shown, an embodiment of the present disclosure provides a device 70 for controlling an air conditioner, comprising a processor 71 and a memory 72. Optionally, the device 70 may further comprise a communication interface 73 and a bus 74. The processor 71, the communication interface 73, and the memory 72 may communicate with each other via the bus 74. The communication interface 73 may be used for information transmission. The processor 71 may call the logic instructions in the memory 72 to execute the method for controlling an air conditioner of the above embodiment.

[0099] In addition, the logic instructions in the memory 72 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0100] Memory 72, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of the present disclosure. Processor 71 executes the program instructions / modules stored in memory 72 to execute functional applications and process data, thereby implementing the method for controlling the air conditioner in the above-mentioned embodiments.

[0101] The memory 72 may include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function; the data storage area may store data generated based on the use of the terminal device. Furthermore, the memory 72 may include high-speed random access memory and non-volatile memory.

[0102] Combine Figure 8 As shown, the embodiment of the present disclosure provides an air conditioner 1. The specific structure of the air conditioner 1 can be found in the above and Figure 1. The air conditioner 1 also includes: a device 60 (70) for controlling the air conditioner. The device 60 (70) for controlling the air conditioner is installed on the air conditioner 1. The installation relationship described here is not limited to placement inside the air conditioner 1, but also includes installation connections with other components of the air conditioner 1, including but not limited to physical connections, electrical connections or signal transmission connections, etc. It can be understood by those skilled in the art that the device 60 (70) for controlling the air conditioner can be adapted to a feasible product body, thereby realizing other feasible embodiments.

[0103] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned method for controlling an air conditioner.

[0104] The technical solutions of the embodiments of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium may be a non-transitory storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, among other media capable of storing program code.

[0105] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include plural forms. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variations "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, an element defined by the sentence "comprising a..." does not exclude the presence of other identical elements in the process, method or device that includes the element. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments can be referenced to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can be found in the description of the method part.

[0106] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. The technicians will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0107] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical functional division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, and can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of the present disclosure may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0108] The flowcharts and block diagrams in the accompanying drawings show the possible implementation architectures, functions and operations of the systems, methods and computer program products according to the embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment or part of the code, and the module, program segment or part of the code contains one or more executable instructions for implementing the specified logical functions. In some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in an order different from that disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified function or action, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. An air conditioner, characterized in that: include: a liquid pipe shutoff valve connected between the throttling element of the air conditioner and the indoor heat exchanger of the air conditioner; a gas pipe shut-off valve connected between the compressor of the air conditioner and the indoor heat exchanger; An unloading valve has one end connected between the liquid pipe shut-off valve and the throttling element, and the other end connected between the compressor and the gas pipe shut-off valve.

2. The air conditioner according to claim 1, characterized in that The liquid pipe shut-off valve is a weak-current electromagnetic shut-off valve, and / or the gas pipe shut-off valve is a weak-current electromagnetic shut-off valve.

3. The air conditioner according to claim 2, characterized in that Also includes: A backup power supply is electrically connected to the liquid pipe shut-off valve and / or the gas pipe shut-off valve, and is used to supply power to the liquid pipe shut-off valve and / or the gas pipe shut-off valve.

4. The air conditioner according to any one of claims 1 to 3, characterized in that: Also includes: refrigerant detectors, respectively provided on the outdoor unit of the air conditioner and the indoor unit of the air conditioner, or respectively provided on the outdoor unit of the air conditioner and the side of the online pipeline of the plurality of indoor units of the air conditioner, for detecting the refrigerant concentration; The liquid pipe shut-off valve and the gas pipe shut-off valve can be controlled to open or close according to the refrigerant concentration detected by the refrigerant detector.

5. A method for controlling an air conditioner, characterized in that: Applied to the air conditioner according to claim 4, the method comprises: Upon receiving a refrigerant leakage alarm signal, determining a source of the refrigerant leakage alarm signal; Determining a target recovery location based on the source of the refrigerant leakage alarm signal; The operating state of the air conditioner is controlled according to the target recovery position.

6. The method according to claim 5, characterized in that The step of determining a target recovery location according to a source of the refrigerant leakage alarm signal includes: In a case where the refrigerant leakage alarm information originates from the indoor unit or the online pipeline side, determining the target recovery location to be the outdoor heat exchanger; In a case where the refrigerant leakage alarm information originates from an outdoor unit, the target recovery location is determined to be the indoor heat exchanger and the auxiliary pipelines of the indoor heat exchanger.

7. The method according to claim 5 or 6, characterized in that The controlling the operating state of the air conditioner according to the target recovery position includes: When the target recovery location is the outdoor heat exchanger: Controlling the air conditioner to operate in cooling mode; Control the liquid pipe shut-off valve to close, and control the operating frequency of the compressor and / or the wind speed of the outdoor fan; When the preset refrigerant recovery exit conditions are met, the air pipe shut-off valve is controlled to close.

8. The method according to any one of claims 5 to 7, characterized in that The controlling the operating state of the air conditioner according to the target recovery position includes: When the target recovery location is the indoor heat exchanger and its associated pipes: Determine the installation location of the outdoor unit; The operating state of the air conditioner is controlled according to the installation position.

9. A device for controlling an air conditioner, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the method for controlling an air conditioner according to any one of claims 5 to 8 when running the program instructions.

10. A computer-readable storage medium storing program instructions, characterized in that: When the program instructions are executed, the computer is used to execute the method for an air conditioner according to any one of claims 5 to 8.

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