Protection control method of air conditioner, air conditioner and computer readable storage medium

Abstract

The invention discloses a protection control method of an air conditioner, the air conditioner and a computer readable storage medium. The method comprises the steps that system parameters of the air conditioner are obtained; whether a refrigerant of the air conditioner leaks or not is determined according to the system parameters; if yes, the leaked refrigerant is discharged outdoors in a preset mode; the preset mode comprises at least one of the following modes: controlling an electronic expansion valve of the air conditioner to be adjusted to be maximum at a preset speed; and an outdoor side fan of the air conditioner is adjusted to the maximum rotating speed. According to the embodiment of the invention, when the refrigerant leaks, the refrigerant can be controlled to stop leaking in time, the refrigerant is discharged outdoors in time, the efficiency is high, and the system safety and the environment safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a protection control method for an air conditioner, an air conditioner and a computer-readable storage medium. Background Art

[0002] The natural refrigerant carbon dioxide is non-toxic and non-flammable, has stable chemical properties and a wide range of sources. The promotion and application of carbon dioxide refrigerant in cooling and heating equipment (such as air conditioners) is of great significance for improving the greenhouse effect and promoting green and low-carbon social development.

[0003] Carbon dioxide refrigeration or heating mostly uses a transcritical cycle. In the supercritical state, the system pressure is 10-12Mpa. Excessive pressure is prone to leakage and the risk of copper pipe explosion. In related technologies, when the refrigerant leaks, a mechanical bypass pressure relief valve is set in the refrigeration or heating system to remove the refrigerant, and the air conditioner is controlled to stop running to prevent further leakage of the refrigerant. However, this method of handling refrigerant leakage is inefficient.

[0004] It should be noted that the above contents are only used to assist in understanding the technical problems solved by the present invention, and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The main purpose of the present invention is to provide a protection control method for an air conditioner, an air conditioner and a computer-readable storage medium, which aims to promptly control the leakage of refrigerant and discharge the refrigerant to the outside in time when the refrigerant leaks, with high efficiency and improved system safety and environmental safety.

[0006] Based on this, the present invention provides a protection control method for an air conditioner, the protection control method for the air conditioner comprising the following steps:

[0007] Get the system parameters of the air conditioner;

[0008] determining whether the refrigerant of the air conditioner is leaking according to the system parameters;

[0009] If so, the leaked refrigerant is discharged to the outside in a preset manner;

[0010] The preset method includes at least one of the following:

[0011] Controlling the electronic expansion valve of the air conditioner to adjust to a maximum speed at a preset speed;

[0012] Adjust the outdoor fan of the air conditioner to the maximum speed.

[0013] Optionally, the system parameter is system current.

[0014] Optionally, the step of determining whether the refrigerant of the air conditioner is leaking according to the system parameters includes:

[0015] Comparing the system current with the standard current to obtain a comparison value;

[0016] When the comparison value is greater than or equal to a first preset comparison value, it is determined that there is a refrigerant leak in the air conditioner.

[0017] Optionally, the step of determining whether the refrigerant of the air conditioner is leaking according to the system current further includes:

[0018] When the comparison value is less than or equal to the first preset comparison value and greater than or equal to the second preset comparison value, it is determined whether the refrigerant of the air conditioner is leaking according to the temperature of the indoor heat exchange tube.

[0019] Optionally, the step of determining whether the refrigerant of the air conditioner is leaking according to the temperature of the indoor heat exchange tube includes:

[0020] Obtaining the difference between the indoor heat exchange tube temperature and the initial heat exchange tube temperature when the compressor of the air conditioner is started;

[0021] When the difference is less than or equal to a preset difference, it is determined that the refrigerant of the air conditioner is leaking.

[0022] Optionally, the protection control method of the air conditioner further includes:

[0023] When the refrigerant of the air conditioner leaks, the compressor is controlled to stop running.

[0024] Optionally, the protection control method for the air conditioner further comprises:

[0025] Controlling the indoor fan of the air conditioner to stop running; and / or

[0026] The air guide plate of the air conditioner is controlled to close the indoor air outlet.

[0027] Optionally, the preset speed is a preset maximum speed of the electronic expansion valve;

[0028] Alternatively, the preset speed is determined according to the system current, and the greater the system current is, the greater the preset speed is.

[0029] Optionally, after the step of discharging the leaked refrigerant to the outside in a preset manner, the method further includes:

[0030] After the operating time of the outdoor fan reaches a preset time, the outdoor fan is turned off.

[0031] Optionally, after the step of discharging the leaked refrigerant to the outside in a preset manner, the method further includes:

[0032] Displays the fault code corresponding to the refrigerant leakage.

[0033] The present invention also provides an air conditioner, comprising a memory, a processor, and a protection control program stored in the memory and executable on the processor, wherein the protection control program implements the steps of the protection control method for the air conditioner as described above when executed by the processor.

[0034] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a protection control program, and when the protection control program is executed by a processor, the steps of the protection control method for the air conditioner as described above are implemented.

[0035] The present invention provides a protection control method, device, multi-split unit and readable storage medium for an air conditioner. In the embodiments of the present invention, during the operation of the air conditioner, the system parameters of the air conditioner are obtained to monitor in real time or at regular intervals whether the system refrigerant is leaking. If there is a leakage, the leaked refrigerant is discharged to the outside in a preset manner in a timely manner, such as controlling the electronic expansion valve of the air conditioner to adjust to the maximum at a preset speed so that the system quickly restores balance and prevents further leakage of the refrigerant; adjusting the outdoor fan of the air conditioner to the maximum speed to discharge the leaked refrigerant to the outside in a timely manner. This method of handling refrigerant leakage has high processing efficiency and improves system safety and environmental safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0037] Figure 1 A schematic diagram of the hardware environment architecture involved in the protection and control method for an air conditioner provided by the present invention;

[0038] Figure 2 A schematic flow chart of a first embodiment of a protection control method for an air conditioner provided by the present invention;

[0039] Figure 3 A schematic diagram of the structure of the air conditioner proposed by the present invention;

[0040] Figure 4 This is a flow chart of a third embodiment of the protection control method for an air conditioner provided by the present invention.

[0041] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0043] The natural refrigerant carbon dioxide is non-toxic and non-flammable, has stable chemical properties and a wide range of sources. The promotion and application of carbon dioxide refrigerant in cooling and heating equipment (such as air conditioners) is of great significance for improving the greenhouse effect and promoting green and low-carbon social development.

[0044] Carbon dioxide refrigeration or heating mostly uses a transcritical cycle. In the supercritical state, the system pressure is 10-12Mpa. Excessive pressure is prone to leakage and the risk of copper pipe explosion. In the related art, when the refrigerant leaks, the refrigerant is removed by installing a mechanical bypass pressure relief valve in the refrigeration or heating system, and the air conditioner is controlled to stop running to prevent the refrigerant from continuing to leak. However, this method of handling refrigerant leakage is inefficient. And if the leaked refrigerant is not handled in time, the refrigerant may leak into the room. For carbon dioxide refrigerant, if a large amount of leakage occurs indoors, it may pollute the indoor environment and affect the health of the indoor environment.

[0045] Based on this, an embodiment of the present invention provides a protection and control method for an air conditioner. During the operation of the air conditioner, the system current of the air conditioner is obtained to monitor in real time or periodically whether the system refrigerant is leaking. If there is a leakage, the leaked refrigerant is discharged to the outside in a preset manner in a timely manner, such as controlling the electronic expansion valve of the air conditioner to be adjusted to the maximum at a preset speed, so that the system can quickly restore balance and prevent the refrigerant from continuing to leak. The outdoor fan of the air conditioner is adjusted to the maximum speed to discharge the leaked refrigerant to the outside in time. The indoor fan of the air conditioner is reduced to a preset speed to reduce the leakage of refrigerant into the room, and the leaked refrigerant will not flow back into the room through the return air port. The indoor air outlet of the air guide plate of the air conditioner is controlled to prevent the refrigerant from entering the room. This method of handling refrigerant leakage has high processing efficiency and improves system safety and environmental safety.

[0046] In order to better understand the technical solutions provided by the embodiments of the present invention, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0047] As an implementation method, the hardware environment architecture involved in the protection control method of the air conditioner can be as follows: Figure 1 shown.

[0048] Optionally, the hardware architecture involved in the protection control method of the air conditioner includes the air conditioner or a control device of the air conditioner.

[0049] As an implementation, the air conditioner or control device includes: a processor 101, such as a CPU, a memory 102, and a communication bus 103. The communication bus 103 is used to realize the connection and communication between these components. The processor 101 is used to call an application to perform a control operation.

[0050] The memory 102 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory.

[0051] It can be understood that, in one embodiment, the protection control program for implementing the protection of the air conditioner is stored in the memory 102, or in a computer-readable storage medium, and when the processor 101 calls the protection control program from the memory 102 or the computer-readable storage medium, the following operations are performed:

[0052] Get the system parameters of the air conditioner;

[0053] determining whether the refrigerant of the air conditioner is leaking according to the system parameters;

[0054] If so, the leaked refrigerant is discharged to the outside in a preset manner;

[0055] The preset method includes at least one of the following:

[0056] Controlling the electronic expansion valve of the air conditioner to adjust to a maximum speed at a preset speed;

[0057] Adjust the outdoor fan of the air conditioner to the maximum speed.

[0058] Based on the hardware architecture of the above-mentioned air conditioner or mobile device, the following embodiments of the present invention are proposed.

[0059] First embodiment

[0060] Please refer to Figure 2 The protection control method of the air conditioner proposed in the embodiment of the present invention comprises the following steps:

[0061] Step S110, obtaining system parameters of the air conditioner;

[0062] The embodiments of the present invention relate to leakage protection for an air conditioner, and in particular to leakage protection for an air conditioner using carbon dioxide as a refrigerant.

[0063] Optionally, the air conditioner in the embodiment of the present invention realizes cooling or heating based on carbon dioxide. The air conditioner can be used as an all-in-one unit in the kitchen or as a split unit in the bedroom.

[0064] Carbon dioxide cooling or heating mostly uses transcritical cycles. During the operation of the air conditioner, if it is in a supercritical state, the system pressure is 10-12Mpa. Excessive pressure is prone to leakage and the risk of copper pipe explosion. When the refrigerant leaks, the refrigerant may flow into the room, thereby polluting the indoor environment.

[0065] Especially when this type of air conditioner is used in the kitchen, for an integrated air conditioner, no matter where the refrigerant leaks, it may be discharged into the room.

[0066] In other examples, the control method of the embodiments of the present invention may also be used in a refrigeration or heating system using a system refrigerant.

[0067] Please refer to Figure 3 The air conditioner is installed in the kitchen ceiling. The air conditioner includes an exhaust side 104 and an air supply side 105. The air supply side 105 is the side that supplies air to the room, and the exhaust side 104 is the side that exhausts air to the outside. The air supply side 105 includes an indoor heat exchanger, an indoor fan, a return air port 107, and an indoor air outlet 106. The indoor air enters the air conditioner from the return air port 107 under the drive of the indoor fan, and is discharged to the room from the indoor air outlet 106 after heat exchange in the indoor heat exchanger, thereby adjusting the indoor air. The exhaust side 104 includes an outdoor heat exchanger, an outdoor fan, an exhaust port 108, and an outdoor air outlet 109. The indoor air enters the air conditioner from the exhaust port 108 under the drive of the outdoor fan, and is discharged to the outside from the outdoor air outlet 109 after heat exchange in the outdoor heat exchanger.

[0068] If the air conditioner has a refrigerant leak, the refrigerant fills the ceiling. If the refrigerant is not discharged in time, the refrigerant may be discharged into the room through the return air port 107, the exhaust port 108 or the indoor air outlet 106 (when the air conditioner is stopped). Based on this, the embodiment of the present invention monitors whether the refrigerant of the air conditioner is leaking in real time or at a fixed time during the operation of the air conditioner, and adopts a refrigerant discharge strategy in time to deal with the refrigerant leakage.

[0069] In the embodiment of the present invention, the system current is used to determine whether the refrigerant of the air conditioner is leaking. In other optional embodiments, the system pressure or system temperature and other parameters can also be used to determine whether the refrigerant is leaking. The system pressure and system temperature correspond to the system current one by one, so these parameters are equivalent to the system current.

[0070] Step S120, determining whether the refrigerant of the air conditioner is leaking according to the system parameters;

[0071] Taking the system current as an example, when the system current is higher than the system current under normal operation of the air conditioner, it may be that the system pressure is too high and there is a refrigerant leak. Therefore, in some embodiments, a critical value can be set according to the value that will be reached in the case of a refrigerant leak under normal circumstances, and when the system current exceeds the critical value, it is determined that there is a refrigerant leak.

[0072] Alternatively, further, the step of determining whether the refrigerant of the air conditioner is leaking according to the system current includes:

[0073] Comparing the system current with the standard current to obtain a comparison value;

[0074] When the comparison value is greater than or equal to a first preset comparison value, it is determined that there is a refrigerant leak in the air conditioner.

[0075] The system current is compared with the standard current, and the ratio of the system current to the standard current is determined by the comparison value of the system current and the standard current. If the difference between the system current and the standard current is large, it is determined that the refrigerant of the air conditioner is leaking. If the system is abnormal, the actual system current will be reduced compared to the normal current. The comparison value can be a difference value, such as the difference obtained by subtracting the system current from the standard current; or, the comparison value can be a comparison value, such as the comparison value obtained by dividing the standard current by the system current; or, the comparison value can be the ratio of the reduction of the system current relative to the normal current, such as the reduction ratio obtained by subtracting the difference obtained by subtracting the system current from the standard current and then dividing it by the standard current.

[0076] Optionally, the first preset comparison value is a ratio of a reduction in system current relative to a normal current, and the first preset comparison value is m1, 30%<m1<60%.

[0077] In this embodiment, the comparison value between the system current and the standard current and the first preset comparison value are used to determine whether the refrigerant of the air conditioner is leaking, thereby improving the accuracy of the determination.

[0078] If yes, then execute step S130 to discharge the leaked refrigerant to the outside through at least one of the preset methods;

[0079] When the refrigerant of the air conditioner leaks, if the air conditioner continues to operate, more and more refrigerant will leak, which not only affects the subsequent safe operation of the air conditioning system, but also has a certain impact on the indoor environment. Therefore, when the system refrigerant leaks, refrigerant discharge measures are taken in time to ensure the safe operation of the air conditioner and indoor safety.

[0080] In this embodiment, the method for handling the leaked refrigerant is a preset method, and the preset method includes at least one of the following:

[0081] (1) controlling the electronic expansion valve of the air conditioner to adjust to a maximum speed at a preset speed;

[0082] In an optional embodiment, the preset speed is the preset maximum speed of the electronic expansion valve, that is, the electronic expansion valve is adjusted to the maximum at the maximum speed, so that the system can reach equilibrium at the fastest speed (reduce system pressure at the fastest speed).

[0083] In another optional embodiment, the preset speed is determined according to the system current, and the smaller the system current is, the larger the preset speed is.

[0084] If the system current is smaller (much smaller than the normal current), the more serious the refrigerant leakage in the system is. Correspondingly, the opening adjustment speed of the electronic expansion valve is accelerated so that the system can quickly reach balance. If the system current is large (smaller than the normal current, but the difference is not large), it means that the system pressure is small, and the opening adjustment speed of the corresponding electronic expansion valve is reduced to avoid excessive system fluctuations. Therefore, the opening adjustment speed of the electronic expansion is determined based on the system current (the preset speed), so that the system can quickly reach balance while avoiding excessive pressure release that causes large system fluctuations, thereby ensuring the stability of the system.

[0085] In this embodiment, the electronic expansion valve of the air conditioner is controlled to adjust to the maximum speed at a preset speed, so that the refrigerant is prevented from leaking further in time, thereby solving the problem of refrigerant leakage from the root.

[0086] (2) adjusting the outdoor fan of the air conditioner to the maximum speed;

[0087] The outdoor fan is used to exhaust the indoor air to the outside, and the indoor air first enters the ceiling through the exhaust port, and then is discharged to the outside from the outdoor outlet. When the refrigerant of the air conditioner leaks, it will first fill in the ceiling. At this time, adjust the outdoor fan to the maximum speed, which can quickly discharge the refrigerant filled in the ceiling to the outside, preventing the refrigerant from entering the room and ensuring indoor safety.

[0088] (3) controlling the indoor fan of the air conditioner to a preset speed;

[0089] The indoor fan is used to circulate the indoor air through the indoor heat exchanger. The indoor return air first enters the ceiling through the return air port, and then is discharged into the room from the indoor air outlet. The speed of the indoor fan is controlled to decrease to prevent the refrigerant in the ceiling from being discharged into the room through the indoor air outlet along with the indoor return air, thereby ensuring indoor safety. Optionally, the preset speed can be 0, that is, in some embodiments, the indoor fan is directly controlled to stop running.

[0090] (4) Control the air guide plate of the air conditioner to close the indoor air outlet.

[0091] Control the air guide plate to move to the indoor air outlet and close the indoor air outlet. In this way, the refrigerant in the ceiling cannot be discharged into the room through the indoor air outlet, ensuring indoor safety.

[0092] If there is no refrigerant leakage, the air conditioner is controlled to operate normally.

[0093] Optionally, in this embodiment, the protection control method of the air conditioner further includes:

[0094] (5) When the refrigerant of the air conditioner leaks, the compressor is controlled to stop running.

[0095] When the compressor stops running, the refrigerant stops circulating in the system, which can prevent further refrigerant leakage.

[0096] The above five methods for dealing with leaked refrigerant can be controlled simultaneously, in combination of two, or individually.

[0097] In a preferred embodiment, the leaked refrigerant is processed by any of the preset methods (1) and (2) above. In another preferred embodiment, the leaked refrigerant is processed by both the preset methods (1) and (2) above. In yet another preferred embodiment, the five methods for processing the leaked refrigerant are controlled simultaneously, for example, the electronic expansion valve of the air conditioner is controlled to be adjusted to the maximum at a preset speed, the outdoor fan of the air conditioner is adjusted to the maximum speed, and the indoor fan of the air conditioner is reduced to the preset speed, and the indoor air outlet of the air guide plate of the air conditioner is controlled, and the compressor is controlled to stop running. In this way, the system pressure drops, the refrigerant will no longer leak, the compressor stops running, and the refrigerant will no longer circulate in the system. The outdoor fan is adjusted to the maximum speed to quickly discharge the leaked refrigerant to the outside, and the speed of the indoor fan is reduced, and the air guide plate is closed. The leaked refrigerant will not enter the room through the indoor air outlet, and will not flow back into the room from the return air outlet. The leaked refrigerant is handled from multiple angles and in all directions to prevent further leakage of the refrigerant, and the leaked refrigerant is discharged to the outside in time to improve system safety and environmental safety.

[0098] Second embodiment

[0099] This embodiment is based on the first embodiment. On the basis of the first embodiment, the step of determining whether the refrigerant of the air conditioner is leaking according to the system current further includes:

[0100] When the comparison value is less than or equal to the first preset comparison value and greater than or equal to the second preset comparison value, it is determined whether the refrigerant of the air conditioner is leaking according to the temperature of the indoor heat exchange tube.

[0101] Based on the above embodiment, the system current is compared with the standard current, and the ratio of the difference between the system current and the standard current is determined by the comparison value of the system current and the standard current. If the difference between the system current and the standard current is large, it is determined that the refrigerant of the air conditioner is leaking. For example, a first preset comparison value is used as a critical value. If the comparison value is greater than or equal to the first preset comparison value, it is determined that the refrigerant of the air conditioner is leaking. If the comparison value is less than the first preset comparison value, it can be preliminarily determined that the refrigerant of the air conditioner is not leaking.

[0102] Compared with the first embodiment, this embodiment proposes a further judgment scheme. If the comparison value is less than the first preset comparison value, the refrigerant of the air conditioner may or may not be leaking. In order to improve the accuracy of the judgment, this embodiment also sets a second preset comparison value as a critical value. If the comparison value is between the first preset comparison value and the second preset comparison value, it is necessary to combine the indoor heat exchange tube temperature to determine whether the refrigerant of the air conditioner is leaking.

[0103] Optionally, the first preset comparison value and the second preset comparison value are respectively the ratios of the system current to the normal current, the first preset comparison value is m1, 30%<m1<60%, and the second preset comparison value is m2, 10%<m2<30%.

[0104] Optionally, the step of determining whether the refrigerant of the air conditioner is leaking according to the temperature of the indoor heat exchange tube includes:

[0105] Obtaining the difference between the indoor heat exchange tube temperature and the initial heat exchange tube temperature when the compressor of the air conditioner is started;

[0106] When the difference is less than or equal to a preset difference, it is determined that the refrigerant of the air conditioner is leaking.

[0107] The initial heat exchange tube temperature is the temperature of the heat exchange tube after a preset time (such as 3 minutes) after the compressor is started. At this time, the air conditioning system starts to run and the heat exchange tube temperature gradually begins to change. If the difference between the current indoor heat exchange tube temperature and the initial heat exchange tube temperature when the compressor is started is less than or equal to the preset difference, it means that the indoor heat exchange tube temperature changes little during the operation of the compressor. The reason for the small change in tube temperature, combined with the system current value, can be considered to be a refrigerant leak in the air conditioner.

[0108] This embodiment combines the change of the indoor heat exchange tube temperature to determine whether the refrigerant of the air conditioner is leaking, thereby further improving the accuracy of the determination.

[0109] Third embodiment

[0110] Please refer to Figure 4This embodiment is based on all the above embodiments. On the basis of all the above embodiments, after the step of discharging the leaked refrigerant to the outside in a preset manner, it also includes:

[0111] Step S140: After the operating time of the outdoor fan reaches a preset time, the outdoor fan is turned off.

[0112] When the outdoor fan has been running for a preset time, it is determined that the refrigerant leaked into the ceiling has been completely discharged to the outside. At this time, the outdoor fan can be turned off. Turning off the outdoor fan in time can save energy. For integrated air conditioners, it can avoid discharging indoor air to the outside and maintain the comfort of the indoor environment.

[0113] Optionally, the method further includes: step S150, displaying a fault code corresponding to the refrigerant leakage.

[0114] After the above-mentioned treatment of the leaked refrigerant, if the air conditioner has a refrigerant leak, it is necessary to promptly notify the user of the refrigerant leakage fault. Therefore, the fault code corresponding to the refrigerant leakage is displayed on the display interface.

[0115] Optionally, the display interface may be a display screen interface of the air conditioner, or may be a user interface of a mobile terminal that communicates with the air conditioner.

[0116] The present invention also provides an air conditioner, comprising a memory, a processor, and a protection control program stored in the memory and executable on the processor, wherein the protection control program implements the steps of the protection control method for the air conditioner as described above when executed by the processor.

[0117] The present invention also provides a mobile device, which includes a memory, a processor, and a protection control program stored in the memory and executable on the processor. When the protection control program is executed by the processor, the steps of the air conditioner protection control method as described above are implemented.

[0118] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a protection control program, and when the protection control program is executed by a processor, the steps of the protection control method for the air conditioner as described above are implemented.

[0119] It should be noted that the above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A protection control method for an air conditioner, characterized in that: The protection control method of the air conditioner comprises the following steps: Get the system parameters of the air conditioner; determining whether the refrigerant of the air conditioner is leaking according to the system parameters; If so, the leaked refrigerant is discharged to the outside in a preset manner; The preset method includes at least one of the following: Controlling the electronic expansion valve of the air conditioner to adjust to a maximum speed at a preset speed; Adjust the outdoor fan of the air conditioner to the maximum speed.

2. The protection control method of the air conditioner according to claim 1, characterized in that: The system parameter is system current.

3. The protection control method of the air conditioner according to claim 2, characterized in that: The step of determining whether the refrigerant of the air conditioner is leaking according to the system parameters comprises: Comparing the system current with the standard current to obtain a comparison value; When the comparison value is greater than or equal to a first preset comparison value, it is determined that there is a refrigerant leak in the air conditioner.

4. The protection control method for an air conditioner according to claim 3, characterized in that: The step of determining whether the refrigerant of the air conditioner is leaking according to the system parameters also includes: When the comparison value is less than or equal to the first preset comparison value and greater than or equal to the second preset comparison value, it is determined whether the refrigerant of the air conditioner is leaking according to the temperature of the indoor heat exchange tube.

5. The protection control method for an air conditioner according to claim 4, characterized in that: The step of determining whether the refrigerant of the air conditioner is leaking according to the temperature of the indoor heat exchange tube comprises: Obtaining the difference between the indoor heat exchange tube temperature and the initial heat exchange tube temperature when the compressor of the air conditioner is started; When the difference is less than or equal to a preset difference, it is determined that the refrigerant of the air conditioner is leaking.

6. The protection control method for an air conditioner according to any one of claims 1 to 5, characterized in that: The protection control method of the air conditioner also includes: When the refrigerant of the air conditioner leaks, the compressor is controlled to stop running.

7. The protection control method for an air conditioner according to any one of claims 1 to 5, characterized in that: The protection control method for the air conditioner further comprises: Controlling the indoor fan of the air conditioner to stop running; and / or The air guide plate of the air conditioner is controlled to close the indoor air outlet.

8. The protection control method for an air conditioner according to any one of claims 1 to 5, characterized in that: The preset speed is the preset maximum speed of the electronic expansion valve; Alternatively, the preset speed is determined according to the system current, and the greater the system current is, the greater the preset speed is.

9. The protection control method for an air conditioner according to any one of claims 1 to 5, characterized in that: After the step of discharging the leaked refrigerant to the outside in a preset manner, the method further includes: After the operating time of the outdoor fan reaches a preset time, the outdoor fan is turned off.

10. The protection control method of the air conditioner according to claim 9, characterized in that: After the step of discharging the leaked refrigerant to the outside in a preset manner, the method further includes: Displays the fault code corresponding to the refrigerant leakage.

11. An air conditioner, characterized in that: The air conditioner includes a memory, a processor, and a protection control program stored in the memory and executable on the processor. When the protection control program is executed by the processor, the steps of the protection control method for the air conditioner as described in any one of claims 1 to 10 are implemented.

12. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a protection control program, and when the protection control program is executed by a processor, the steps of the protection control method for the air conditioner according to any one of claims 1 to 10 are implemented.

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