Air conditioner and refrigerant leakage control method and device thereof

Abstract

The invention provides an air conditioner and a refrigerant leakage control method and device thereof. The air conditioner comprises a plurality of indoor units and outdoor units. A detection device; the control device is used for acquiring parameter information of each indoor unit after the acquisition module receives the starting signal; the first control module is used for determining the refrigerant leakage condition of each indoor unit according to the parameter information of each indoor unit, marking the indoor unit with refrigerant leakage as a leaked indoor unit, and marking the indoor unit without refrigerant leakage as a non-leaked indoor unit; and the second control module is used for controlling the non-leakage indoor unit to continue normal operation and executing leakage remedy operation on the leakage indoor unit. According to the method, the refrigerant leakage condition can be rapidly recognized, the leaked indoor unit is marked in time, a series of remedial operations are executed on the leaked indoor unit, and the risk caused by leakage is reduced to the maximum extent. And for the indoor units without leakage, the system allows the indoor units to continue to operate, and it is guaranteed that the overall efficiency of the air conditioner and the comfort degree of a user are not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliances, and particularly to an air conditioner and a refrigerant leakage control method and control device therefor. Background Art

[0002] In the related art, the trend of global warming is intensifying, and the environmental protection requirements are getting higher and higher. Especially in recent years, under the trend of strict control of carbon emissions globally, the air conditioning system has put forward higher requirements for the characteristics of refrigerants. In order to reduce the GWP value to meet the current domestic and international environmental protection requirements, all air conditioning equipment manufacturers are turning to new environmentally friendly refrigerants. However, this type of refrigerant is often flammable, such as R32, R454B, etc. During the operation of the air conditioning system, the degree of danger of leakage in the indoor unit is particularly important. The huge safety problems brought by its flammability need to be fundamentally solved to eliminate potential hazards. Summary of the Invention

[0003] The present invention provides an air conditioner and a refrigerant leakage control method and control device therefor, which are used to solve the defects existing in the prior art and achieve the following technical effects: The system can quickly identify the situation of refrigerant leakage and mark the leaking indoor unit in time. Once refrigerant leakage is detected, the system immediately performs a series of remedial operations on the leaking indoor unit to minimize the risk brought by the leakage. For the indoor units without leakage, the system allows them to continue normal operation, ensuring that the overall efficiency of the air conditioning system and the comfort of users are not affected.

[0004] The air conditioner according to the first aspect embodiment of the present invention includes: A plurality of indoor units and an outdoor unit; A detection device for detecting parameter information of the indoor unit; A control device connected to the detection device, and the control device includes an acquisition module, a first control module, and a second control module; Wherein, after receiving the signal of the air conditioner being turned on, the acquisition module acquires the parameter information of each indoor unit sent by the detection device; the first control module is used to determine the refrigerant leakage situation of each indoor unit according to the parameter information of each indoor unit, mark the indoor unit with refrigerant leakage as a leaking indoor unit, and mark the indoor unit without refrigerant leakage as a non-leaking indoor unit; the second control module is used to control the non-leaking indoor units to continue normal operation and perform leakage remedial operations on the leaking indoor units.

[0005] According to an embodiment of the present invention, the second control module is specifically used for: If the concentration of the leaked refrigerant in the indoor unit is greater than or equal to the set refrigerant concentration, it is determined that the indoor unit has refrigerant leakage and it is marked as a leaking indoor unit; If the concentration of the leaked refrigerant in the indoor unit is less than the set refrigerant concentration, it is determined that there is no refrigerant leakage in the indoor unit, and it is marked as a non-leaking indoor unit.

[0006] In this way, through the above steps, the present invention can effectively judge and mark the leaking indoor unit by using the key parameter of the leaked refrigerant concentration, while ensuring the normal operation of the non-leaking indoor unit, thereby improving the safety and reliability of the entire air conditioning system.

[0007] According to an embodiment of the present invention, the leakage remedy operation specifically includes: controlling the blower of the leaking indoor unit to operate at a high wind speed, and controlling the air deflector of the leaking indoor unit to open to the maximum opening angle.

[0008] This can accelerate the indoor air flow, help to disperse the leaked refrigerant, reduce its accumulation in a local area, and thus reduce the risk of fire or explosion caused by the accumulation of refrigerant.

[0009] According to an embodiment of the present invention, the leakage remedy operation specifically includes: controlling the electronic expansion valve of the leaking indoor unit to close to the minimum opening degree, and / or controlling the cut-off valve in the valve box of the leaking indoor unit to close and last for at least a set closing duration.

[0010] In this way, closing the electronic expansion valve can reduce the refrigerant flow rate, thereby reducing the risk of further leakage. Closing the cut-off valve can cut off the refrigerant supply and further prevent refrigerant leakage.

[0011] According to an embodiment of the present invention, the method for determining the set closing duration is as follows: Obtain the current working mode of the leaking indoor unit; When the leaking indoor unit is in the cooling mode, determine the set closing duration as the first closing duration; or, when the leaking indoor unit is in the heating mode, determine the set closing duration as the second closing duration; Wherein, the first closing duration is less than the second closing duration.

[0012] In this way, by this method of setting the cut-off valve closing duration according to the working mode, the present invention can more precisely control the leakage remedy operation, not only ensuring the safety of the system, but also considering the special requirements in different working states, and improving the adaptability and effectiveness of the remedy measures.

[0013] According to an embodiment of the present invention, the leakage remedy operation specifically includes: connecting a third-party exhaust fan to the leaking indoor unit, and controlling the third-party exhaust fan to exhaust air from the leaking indoor unit.

[0014] In this way, the above exhaust operation helps to quickly reduce the concentration of the leaked refrigerant indoors and reduce its potential threat to human health and safety.

[0015] According to an embodiment of the present invention, in the leakage remedy operation, the operation of controlling the third-party exhaust fan to exhaust the leaked indoor unit specifically includes: controlling and adjusting the working parameters of the third-party exhaust fan according to the current concentration of the leaked refrigerant in the leaked indoor unit.

[0016] In this way, the system will consider the concentration of the leaked refrigerant and other environmental parameters to optimize the working parameters of the exhaust fan and ensure effective control of refrigerant leakage under different environmental conditions.

[0017] According to an embodiment of the present invention, the second control module is specifically used for: If the refrigerant circulation pressure of the indoor unit is less than the set refrigerant pressure, it is determined that the indoor unit has refrigerant leakage and it is marked as a leaked indoor unit; If the refrigerant circulation pressure of the indoor unit is greater than or equal to the set refrigerant pressure, it is determined that the indoor unit has no refrigerant leakage and it is marked as a non-leaked indoor unit.

[0018] In this way, by monitoring the trend of pressure change, it is possible to monitor and evaluate whether leakage occurs and the severity of the leakage.

[0019] According to an embodiment of the present invention, the second control module is specifically used for: If the temperature difference between the inlet and outlet of the indoor heat exchanger of the indoor unit is less than the set temperature difference, it is determined that the indoor unit has refrigerant leakage and it is marked as a leaked indoor unit; If the temperature difference between the inlet and outlet of the indoor heat exchanger of the indoor unit is greater than or equal to the set temperature difference, it is determined that the indoor unit has no refrigerant leakage and it is marked as a non-leaked indoor unit.

[0020] In this way, this embodiment utilizes the direct relationship between the performance of the heat exchanger and the refrigerant charge. By monitoring the change of this key parameter, refrigerant leakage problems can be detected and processed in a timely manner, thus ensuring the safe and efficient operation of the air-conditioning system.

[0021] According to an embodiment of the present invention, it further includes: An alarm device, connected to the control device, wherein the control device is used to send an alarm signal to the alarm device when the air conditioner has the leaked indoor unit, and the alarm device is used to issue a refrigerant leakage alarm after receiving the alarm signal; the alarm device includes at least one of the line controller, lamp board and centralized controller of the air conditioner.

[0022] In this way, through these alarm and prompt measures, the present invention can not only detect and mark refrigerant leakage in a timely manner, but also remind users and maintenance personnel to take actions in various ways, thereby improving the safety and reliability of the air conditioning system.

[0023] According to the refrigerant leakage control method of an air conditioner according to an embodiment of the second aspect of the present invention, the air conditioner includes a plurality of indoor units, and the method includes: receiving a signal for turning on the air conditioner, and obtaining parameter information of each of the indoor units; determining the refrigerant leakage situation of each of the indoor units according to the parameter information of each of the indoor units, marking the indoor unit with refrigerant leakage as a leakage indoor unit, and marking the indoor unit without refrigerant leakage as a non-leakage indoor unit; controlling the non-leakage indoor units to continue to operate normally, and performing leakage remedial operations on the leakage indoor units.

[0024] According to the refrigerant leakage control device of an air conditioner according to an embodiment of the third aspect of the present invention, the air conditioner includes a plurality of indoor units, and the control device includes: an acquisition module, configured to receive a signal for turning on the air conditioner and obtain parameter information of each of the indoor units; a first control module, configured to determine the refrigerant leakage situation of each of the indoor units according to the parameter information of each of the indoor units, and mark the indoor unit with refrigerant leakage as a leakage indoor unit and mark the indoor unit without refrigerant leakage as a non-leakage indoor unit; a second control module, configured to control the non-leakage indoor units to continue to operate normally and perform leakage remedial operations on the leakage indoor units.

[0025] The present invention provides an air conditioner and a refrigerant leakage control method thereof, and the air conditioner and the method have at least the following advantages compared with the related art.

[0026] (1) Quick leakage identification: The system can quickly identify the refrigerant leakage situation by real-time monitoring the parameter information of the indoor units, and mark the leakage indoor units in a timely manner.

[0027] (2) Timely remedial measures: Once the refrigerant leakage is detected, the system immediately performs a series of remedial operations on the leakage indoor units, including adjusting the opening degree of the electronic expansion valve, sound and light alarm, high wind speed operation, etc., to minimize the risk brought by the leakage.

[0028] (3) No impact on non-leakage indoor units: For the indoor units without leakage, the system allows them to continue to operate normally, ensuring that the overall efficiency of the air conditioning system and the comfort of users are not affected.

[0029] (4) Safe logic control: The system adopts safe logic control to ensure that when leakage occurs, the leakage indoor units can be quickly isolated and corresponding measures can be taken to avoid the occurrence of safety accidents.

[0030] (5) System scalability: The system design takes into account the scalability of the air conditioner and can adapt to different numbers of indoor units, from a few to up to 64 units, enhancing the applicability of the system. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of the air conditioner provided by the present invention.

[0033] Figure 2 It is a schematic flowchart of the refrigerant leakage control method of the air conditioner provided by the present invention.

[0034] Figure 3 It is a schematic structural diagram of the refrigerant leakage control device of the air conditioner provided by the present invention.

[0035] Figure 4 It is a schematic structural diagram of the electronic device provided by the present invention. Description of the Drawings

[0036] 100, control device; 200, outdoor unit; 300, indoor unit; 400, detection device; 500, alarm device; 600, third-party exhaust fan; 110, acquisition module; 120, first control module; 130, second control module. Detailed Embodiments

[0037] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0038] Such as Figure 1As shown in the figure, an air conditioner according to an embodiment of the first aspect of the present invention includes a plurality of indoor units 300, an outdoor unit 200, a detection device 400, and a control device 100. The outdoor unit 200 includes a plurality of outdoor heat exchangers connected in parallel, and each indoor unit 300 includes an indoor heat exchanger; the detection device 400 is used to detect the parameter information of the indoor unit 300; the control device 100 is connected to the detection device 400, and the control device 100 includes an acquisition module 110, a first control module 120, and a second control module 130.

[0039] Among them, after receiving the signal to turn on the air conditioner, the acquisition module 110 acquires the parameter information of each indoor unit 300 sent by the detection device 400; the first control module 120 is used to determine the refrigerant leakage situation of each indoor unit 300 according to the parameter information of each indoor unit 300, mark the indoor unit 300 with refrigerant leakage as a leakage indoor unit, and mark the indoor unit 300 without refrigerant leakage as a non-leakage indoor unit; the second control module 130 is used to control the non-leakage indoor unit to continue to operate normally and perform a leakage remedy operation on the leakage indoor unit.

[0040] According to an embodiment of the present invention, the second control module 130 is specifically used for: If the concentration of the leaked refrigerant in the indoor unit 300 is greater than or equal to the set refrigerant concentration, it is determined that the indoor unit 300 has refrigerant leakage and is marked as a leakage indoor unit; If the concentration of the leaked refrigerant in the indoor unit 300 is less than the set refrigerant concentration, it is determined that the indoor unit 300 has no refrigerant leakage and is marked as a non-leakage indoor unit.

[0041] In this way, through the above steps, the present invention can effectively judge and mark the leakage indoor unit by using the key parameter of the concentration of the leaked refrigerant, and at the same time ensure the normal operation of the non-leakage indoor unit, thereby improving the safety and reliability of the entire air conditioning system.

[0042] According to an embodiment of the present invention, the leakage remedy operation specifically includes: controlling the fan of the leakage indoor unit to operate at a high gear wind speed and controlling the air deflector of the leakage indoor unit to open to the maximum opening angle.

[0043] This can accelerate the indoor air flow, help to disperse the leaked refrigerant, reduce its accumulation in a local area, and thus reduce the risk of fire or explosion caused by the accumulation of refrigerant.

[0044] According to an embodiment of the present invention, the leakage remedy operation specifically includes: controlling the electronic expansion valve of the leakage indoor unit to close to the minimum opening degree, and / or controlling the cut-off valve in the valve box of the leakage indoor unit to close and last for at least the set closing duration.

[0045] In this way, closing the electronic expansion valve can reduce the refrigerant flow rate, thereby reducing the risk of further leakage. Closing the cut-off valve can cut off the refrigerant supply, further preventing refrigerant leakage.

[0046] According to an embodiment of the present invention, the method for determining the set closing duration is as follows: Obtain the current operating mode of the leaking indoor unit. When the leaking indoor unit is in the cooling mode, determine that the set closing duration is the first closing duration; or, when the leaking indoor unit is in the heating mode, determine that the set closing duration is the second closing duration; where the first closing duration is less than the second closing duration.

[0047] In this way, by this method of setting the cut-off valve closing duration according to the operating mode, the present invention can more precisely control the leakage remedy operation, ensuring both the safety of the system and taking into account the special requirements in different operating states, improving the adaptability and effectiveness of the remedy measures.

[0048] According to an embodiment of the present invention, the leakage remedy operation specifically includes: connecting a third-party exhaust fan 600 to the leaking indoor unit and controlling the third-party exhaust fan 600 to exhaust air from the leaking indoor unit.

[0049] In this way, the above exhaust operation helps to quickly reduce the concentration of the leaked refrigerant indoors and reduce its potential threat to human health and safety.

[0050] According to an embodiment of the present invention, in the leakage remedy operation, the operation of controlling the third-party exhaust fan 600 to exhaust air from the leaking indoor unit specifically includes: controlling and adjusting the operating parameters of the third-party exhaust fan 600 according to the current leaked refrigerant concentration of the leaking indoor unit.

[0051] In this way, the system will consider the leaked refrigerant concentration and other environmental parameters to optimize the operating parameters of the exhaust fan 600, ensuring effective control of refrigerant leakage under different environmental conditions.

[0052] According to an embodiment of the present invention, the second control module 130 is specifically used for: If the refrigerant circulation pressure of the indoor unit 300 is less than the set refrigerant pressure, it is determined that the indoor unit 300 has refrigerant leakage and it is marked as a leaking indoor unit; If the refrigerant circulation pressure of the indoor unit 300 is greater than or equal to the set refrigerant pressure, it is determined that the indoor unit 300 has no refrigerant leakage and it is marked as a non-leaking indoor unit.

[0053] In this way, by monitoring the trend of pressure change, it is possible to monitor and evaluate whether leakage has occurred and the severity of the leakage.

[0054] According to an embodiment of the present invention, the second control module 130 is specifically configured to: If the temperature difference between the inlet and outlet of the indoor heat exchanger of the indoor unit 300 is less than the set temperature difference, it is determined that the indoor unit 300 has a refrigerant leak, and it is marked as a leaking indoor unit; If the temperature difference between the inlet and outlet of the indoor heat exchanger of the indoor unit 300 is greater than or equal to the set temperature difference, it is determined that the indoor unit 300 has no refrigerant leak, and it is marked as a non-leaking indoor unit.

[0055] In this way, this embodiment utilizes the direct relationship between the performance of the heat exchanger and the refrigerant charge. By monitoring the change of this key parameter, the refrigerant leak problem can be detected and processed in time, thus ensuring the safe and efficient operation of the air conditioning system.

[0056] According to an embodiment of the present invention, it further includes: An alarm device 500, connected to the control device 100. The control device 100 is used to send an alarm signal to the alarm device 500 when there is a leaking indoor unit in the air conditioner. The alarm device 500 is used to issue a refrigerant leak alarm after receiving the alarm signal; the alarm device 500 includes at least one of the wired controller, lamp board and centralized controller of the air conditioner.

[0057] In this way, through these alarm and prompt measures, the present invention can not only detect and mark the refrigerant leak in time, but also remind users and maintenance personnel to take actions in various ways, thereby improving the safety and reliability of the air conditioning system.

[0058] Next, the refrigerant leak control method and control device of the air conditioner proposed by the present invention will be described with reference to the accompanying drawings. Among them, before describing the embodiments of the present invention in detail, the entire application scenario will be described first. The refrigerant leak control method, control device, electronic device and computer-readable storage medium of the air conditioner in the embodiments of the present invention can be applied not only to the local area of the air conditioner, but also to the cloud platform in the Internet field, or the cloud platform in other types of Internet fields, or can also be applied to third-party devices. The third-party devices may include various different types such as mobile phones, tablet computers, notebooks, in-vehicle computers and other intelligent terminals.

[0059] Next, only the refrigerant leak control method applicable to the air conditioner will be used as an example for description. It should be understood that the control method in the embodiments of the present invention can also be applied to the cloud platform and third-party devices.

[0060] As Figure 2 shown, according to the refrigerant leak control method of the air conditioner in the second aspect embodiment of the present invention, the air conditioner includes a plurality of indoor units 300, and the method includes: Step S1, receiving a signal to turn on the air conditioner, and obtaining the parameter information of each indoor unit 300; Step S2: According to the parameter information of each indoor unit 300, determine the refrigerant leakage situation of each indoor unit 300, mark the indoor unit 300 with refrigerant leakage as a leakage indoor unit, and mark the indoor unit 300 without refrigerant leakage as a non - leakage indoor unit; Step S3: Control the non - leakage indoor units to continue normal operation, and perform leakage remedy operations on the leakage indoor units.

[0061] For the refrigerant leakage control method of the air conditioner according to the embodiment of the present invention, its specific working process is as follows: When the air - conditioning system starts, the control system receives an on signal. Subsequently, the control system acquires the parameter information of each indoor unit 300, and these parameters may include pressure, temperature, flow rate, etc., for evaluating the state of the refrigerant system.

[0062] Using the acquired parameter information, the control system analyzes and determines whether there is refrigerant leakage in each indoor unit 300. The determination of the leakage situation may be based on a preset safety threshold. For example, if the detected refrigerant pressure or concentration is lower than the normal operating range, the system may determine it as a leakage.

[0063] Once the leakage situation is determined, the system marks the indoor unit 300 with leakage as a "leakage indoor unit", and marks the indoor unit 300 without leakage as a "non - leakage indoor unit".

[0064] For the "non - leakage indoor units", the control system allows them to continue normal operation to ensure the overall efficiency of the air - conditioning system and the comfort of users.

[0065] For the "leakage indoor units", the control system performs a series of remedy operations to ensure safety. For example, valve opening control: Adjust the opening of the electronic expansion valve of the leakage indoor unit to reduce further refrigerant leakage. Another example is audible and visual alarm: Issue an audible and visual alarm through the wired controller or panel to prompt users and maintenance personnel to pay attention to the leakage situation. Another example is high - speed operation: Force the leakage indoor unit to switch to the high - speed operation mode to help disperse the leaked refrigerant and reduce accumulation; or, air deflector control: If the indoor unit is equipped with an air deflector, force it to turn to the maximum angle to optimize air flow and reduce refrigerant accumulation.

[0066] In addition, the control system can also output a signal to link with a third - party exhaust system, such as the exhaust fan 600, to enhance the replacement of indoor air and reduce the concentration of leaked refrigerant.

[0067] It can be understood that the core principle of this control method is to quickly identify the refrigerant leakage situation by real - time monitoring and analyzing the parameter information of the indoor unit 300, and take corresponding control measures to prevent safety accidents caused by leaked refrigerant, such as fire or explosion. At the same time, by maintaining the normal operation of non - leakage indoor units, the basic efficiency of the air - conditioning system is ensured, and the impact on user comfort is reduced.

[0068] In the related art, the current trend of global warming is intensifying, and environmental protection requirements are getting higher and higher. Especially in recent years, under the trend of strict global control of carbon emissions, the air-conditioning system has put forward higher requirements for the characteristics of refrigerants. In order to reduce the GWP value to meet the current domestic and international environmental protection requirements, all air-conditioning equipment manufacturers are turning to new environmentally friendly refrigerants. However, this type of refrigerant is often flammable, such as R32, R454B, etc. During the operation of the air-conditioning system, the degree of danger of leakage from the indoor unit is particularly important. The huge safety problems brought by its flammability need to be fundamentally solved to eliminate potential hazards.

[0069] Therefore, in order to solve the technical defects existing in the above-mentioned related art, the present invention provides a method for controlling refrigerant leakage in an air conditioner. This method has at least the following advantages compared with the related art.

[0070] (1) Rapid leakage identification: The system can quickly identify the situation of refrigerant leakage by real-time monitoring the parameter information of the indoor unit 300, and mark the leaking indoor unit in time.

[0071] (2) Timely remedial measures: Once refrigerant leakage is detected, the system immediately performs a series of remedial operations on the leaking indoor unit, including adjusting the opening of the electronic expansion valve, audible and visual alarms, high-speed operation, etc., to minimize the risks brought by the leakage.

[0072] (3) Does not affect non-leaking indoor units: For the indoor units 300 that have not leaked, the system allows them to continue to operate normally, ensuring that the overall efficiency of the air-conditioning system and the comfort of users are not affected.

[0073] (4) Safety logic control: The system adopts safety logic control to ensure that when leakage occurs, the leaking indoor unit can be quickly isolated and corresponding measures can be taken to avoid the occurrence of safety accidents.

[0074] (5) System scalability: The system design takes into account the scalability of the air conditioner and can adapt to different numbers of indoor units 300, from a few to up to 64, enhancing the applicability of the system.

[0075] According to some embodiments of the present invention, after the system receives the signal to turn on the air conditioner, it starts to collect the parameter information of each indoor unit 300. This parameter may include but is not limited to the pressure, temperature, flow rate of the refrigerant, and possible leakage rate, etc. By comparing the actual parameters with the expected parameters during normal operation, the control system can determine whether there is refrigerant leakage. For example, if the refrigerant pressure of a certain indoor unit 300 is lower than the normal value, or an abnormal temperature change is detected, the system may determine it as a leakage.

[0076] It can be understood that when the parameter information is different, the system's method of judging the refrigerant leakage of the indoor unit 300 is also different. For the sake of ease of description, the following will first take the parameter information including the leakage refrigerant concentration of the indoor unit 300 as an example to illustrate the method of judging the refrigerant leakage of the indoor unit 300 without loss of generality.

[0077] Specifically, when the parameter information includes the leakage refrigerant concentration of the indoor unit 300, the steps of determining the indoor unit 300 where the refrigerant leakage occurs and marking it as a leakage indoor unit according to the parameter information of each indoor unit 300, and marking the indoor units 300 other than the leakage indoor unit as non-leakage indoor units specifically include: If the refrigerant leakage concentration of the indoor unit 300 is greater than or equal to the set refrigerant concentration, it is determined that the indoor unit 300 has a refrigerant leakage, and is marked as a leaking indoor unit; According to the fact that the leakage refrigerant concentration of the indoor unit 300 is less than the set refrigerant concentration, it is determined that the indoor unit 300 has no refrigerant leakage and is marked as a non-leaking indoor unit.

[0078] In this embodiment, the system first sets a threshold value of the leaked refrigerant concentration, which is predetermined based on the air-conditioning system design, safety standards, and the physical and chemical properties of the refrigerant, to determine whether there is a refrigerant leak in the indoor unit 300.

[0079] After the air conditioning system is started, the control system monitors the leakage refrigerant concentration of each indoor unit 300 in real time. For each indoor unit 300, the control system compares the monitored leakage refrigerant concentration with the set threshold value: if the monitored leakage refrigerant concentration is greater than or equal to the set leakage refrigerant concentration threshold value, the system will determine that the indoor unit 300 has a refrigerant leakage; if the monitored leakage refrigerant concentration is less than the set leakage refrigerant concentration threshold value, the system will determine that the indoor unit 300 has no refrigerant leakage.

[0080] For the indoor units 300 that are judged to have leaked, the system will mark them as "leaking indoor units" on the monitoring interface and trigger corresponding safety control measures. For the indoor units 300 that are judged not to have leaked, the system will mark them as "non-leaking indoor units" and allow them to continue to operate normally.

[0081] In this way, through the above steps, the present invention can utilize the key parameter of the leaked refrigerant concentration to effectively judge and mark the leaking indoor unit, while ensuring the normal operation of the non-leaking indoor unit, thereby improving the safety and reliability of the entire air-conditioning system.

[0082] According to some embodiments of the present invention, the step of performing a leakage remediation operation on a leaking internal machine specifically includes: The fan of the leaking indoor unit is controlled to operate at a high wind speed, and the air guide plate of the leaking indoor unit is controlled to open to the maximum opening angle.

[0083] In this embodiment, once the control system determines that a refrigerant leak has occurred in a certain indoor unit 300 and marks it as a leaking indoor unit, the system will immediately adjust the operating state of the blower of this indoor unit. The blower will operate at a high fan speed, which can accelerate the flow of indoor air, help disperse the leaked refrigerant, reduce its accumulation in a local area, and thus reduce the risk of fire or explosion caused by the accumulation of refrigerant.

[0084] At the same time, the system will also control the air deflector of the leaking indoor unit to open to the maximum opening angle. The function of the air deflector is to guide the air flow direction. By adjusting it to the maximum opening angle, the efficiency of air flow can be further improved, enabling the leaked refrigerant to be dispersed in the indoor space faster and reducing the potential threat of the leaked refrigerant to human health and safety.

[0085] According to some embodiments of the present invention, the steps of performing a leak remedy operation on the leaking indoor unit specifically further include: controlling the electronic expansion valve of the leaking indoor unit to close to the minimum opening degree, and / or controlling the shut-off valve in the valve box of the leaking indoor unit to close and last for at least a set closing duration.

[0086] In this embodiment, the system will control the electronic expansion valve of the leaking indoor unit to close to the minimum opening degree. The purpose of this is to reduce the refrigerant flow rate, thereby reducing the risk of further leakage. The adjustment of the electronic expansion valve can very precisely control the refrigerant flow rate, and it is an important adjustment component in the refrigeration system.

[0087] In addition, the system will also control the shut-off valve in the valve box of the leaking indoor unit to close. The closing of the shut-off valve can cut off the refrigerant supply and further prevent refrigerant leakage. Among them, the shut-off valve not only needs to be closed, but also lasts for at least a set closing duration according to safety requirements. This duration can be determined according to the severity of the leak and the system design to ensure that the leak situation is fully controlled.

[0088] Furthermore, before the step of controlling the shut-off valve in the valve box of the leaking indoor unit to close and last for at least a set closing duration, it further includes: Obtaining the current working mode of the leaking indoor unit; In the case where the leaking indoor unit is in the cooling mode, determining that the set closing duration is the first closing duration; or, in the case where the leaking indoor unit is in the heating mode, determining that the set closing duration is the second closing duration.

[0089] Wherein, the first closing duration is less than the second closing duration.

[0090] In this embodiment, once the system determines the current working mode of the leaking indoor unit, it will set the closing duration of the shut-off valve according to this mode: If the indoor unit with leakage is in the cooling mode, the system will determine a first shutdown duration. Since the safety risks associated with refrigerant leakage in the cooling mode are relatively high, the first shutdown duration will be relatively short to more quickly reduce the refrigerant flow rate and lower the leakage risk.

[0091] Conversely, if the indoor unit with leakage is in the heating mode, the system will determine a second shutdown duration. In the heating mode, it may not be necessary to reduce the refrigerant flow rate as urgently, so the second shutdown duration will be relatively long.

[0092] According to the different safety requirements in the cooling and heating modes, the first shutdown duration is set to be less than the second shutdown duration. The system will control the shut-off valve in the valve box of the indoor unit with leakage to close according to the determined shutdown duration above.

[0093] In summary, through this method of setting the shut-off valve shutdown duration according to the working mode, the present invention can more precisely control the leakage remedy operation, ensuring both the safety of the system and taking into account the special requirements in different working states, improving the adaptability and effectiveness of the remedy measures.

[0094] According to some embodiments of the present invention, the steps of performing a leakage remedy operation on the indoor unit with leakage specifically include: Connect a third-party exhaust fan 600 to the indoor unit with leakage and control the third-party exhaust fan 600 to exhaust air from the indoor unit with leakage.

[0095] It can be understood that once the indoor unit with leakage is detected, the system will automatically activate the linkage mechanism with the third-party exhaust system, connect the indoor unit with leakage to the third-party exhaust fan 600. At the same time, the system will send a control signal to the third-party exhaust fan 600 to activate the exhaust fan 600 to exhaust air from the indoor unit with leakage. In this way, the above exhaust operation helps to quickly reduce the concentration of the leaked refrigerant in the room and reduce its potential threat to human health and safety.

[0096] Further, the step of controlling the third-party exhaust fan 600 to exhaust air from the indoor unit with leakage specifically includes: Control and adjust the working parameters of the third-party exhaust fan 600 according to the current leaked refrigerant concentration of the indoor unit with leakage.

[0097] In this embodiment, the system automatically adjusts the working parameters of the third-party exhaust fan 600 according to the level of the leaked refrigerant concentration. These parameters may include: (1) Wind speed: Increase or decrease the wind speed of the exhaust fan 600 to more effectively remove the leaked refrigerant; (2) Working time: Adjust the working time of the exhaust fan 600 to adapt to different concentrations of refrigerant leakage; (3) Start / stop mode: Determine whether the exhaust fan 600 starts immediately, starts with a delay, or operates intermittently according to the urgency of the leakage situation.

[0098] For example, when the concentration of the leaked refrigerant is low, the system can control the exhaust fan 600 to operate at a low wind speed to reduce energy consumption and avoid excessive ventilation. Conversely, if the leakage concentration is high, the system will increase the wind speed of the exhaust fan 600 to quickly remove the leaked refrigerant.

[0099] For another example, at the initial stage of refrigerant leakage, the system may set the exhaust fan 600 to perform high-intensity exhaust for a short period of time to quickly reduce the refrigerant concentration in the leakage area. As the leakage situation is brought under control, the system can extend the exhaust interval or reduce the total working time of the exhaust fan 600.

[0100] In addition, the system can also set the exhaust fan 600 to switch to an intermittent working mode after the leakage concentration drops to a certain safe level, such as starting once every once in a while, to maintain environmental safety.

[0101] For yet another example, the system sets multiple safety thresholds. When the leakage concentration reaches or exceeds a certain threshold, the exhaust fan 600 is triggered to work with specific parameters, such as running at full speed or for the maximum working time.

[0102] Furthermore, the system will also consider outdoor environmental factors, such as temperature, humidity, wind speed, etc., to optimize the working parameters of the exhaust fan 600 and ensure effective control of refrigerant leakage under different environmental conditions.

[0103] The following gives several specific embodiments of the control system's determination of refrigerant leakage in the indoor unit 300 when the parameter information is other parameters than the concentration of the leaked refrigerant.

[0104] In some embodiments of the present invention, taking the parameter information including the refrigerant flow pressure of the indoor unit 300 as an example, the steps of determining the indoor unit 300 with refrigerant leakage according to the parameter information of each indoor unit 300 and marking it as a leaked indoor unit, and marking the indoor units 300 other than the leaked indoor unit as non-leaked indoor units specifically include: If the refrigerant flow pressure of the indoor unit 300 is less than the set refrigerant pressure, it is determined that the indoor unit 300 has refrigerant leakage and it is marked as a leaked indoor unit; If the refrigerant flow pressure of the indoor unit 300 is greater than or equal to the set refrigerant pressure, it is determined that the indoor unit 300 has no refrigerant leakage and it is marked as a non-leaked indoor unit.

[0105] It can be understood that the working principle of this embodiment is as follows: In a sealed refrigeration system, the refrigerant circulates among components such as the condenser, evaporator, and compressor. When the system is well-sealed, the pressure of the refrigerant will be maintained within a relatively stable range. If refrigerant leakage occurs in the system and the amount of refrigerant decreases, it will cause the refrigerant pressure in the system to drop. Since the pressure of the refrigerant is directly related to its filling amount and the system tightness, leakage means a reduction in the amount of refrigerant. The pressure sensor installed in the air-conditioning system can accurately monitor the pressure change of the refrigerant. Once the monitored pressure is lower than the preset safety threshold, the system can infer that leakage may have occurred.

[0106] In actual use, the manufacturer will set a safety threshold for the refrigerant pressure according to the system design and safety requirements. Therefore, in this method, when the operating pressure of the system is lower than this threshold, the control system will determine that the system is no longer safe and take corresponding remedial measures.

[0107] Furthermore, different degrees of leakage will have different effects on the pressure. Small leakage may cause the pressure to drop slowly, while large leakage may cause the pressure to drop rapidly. By monitoring the trend of pressure change, the severity of the leakage can be evaluated.

[0108] In some other embodiments of the present invention, taking the parameter information including the temperature difference between the inlet and outlet of the indoor heat exchanger as an example, the step of determining the indoor unit 300 with refrigerant leakage and marking it as a leakage indoor unit, and marking the indoor units 300 other than the leakage indoor unit as non-leakage indoor units according to the parameter information of each indoor unit 300 specifically includes: If the temperature difference between the inlet and outlet of the indoor heat exchanger of the indoor unit 300 is less than the set temperature difference, it is determined that the indoor unit 300 has refrigerant leakage and is marked as a leakage indoor unit; If the temperature difference between the inlet and outlet of the indoor heat exchanger of the indoor unit 300 is greater than or equal to the set temperature difference, it is determined that the indoor unit 300 has no refrigerant leakage and is marked as a non-leakage indoor unit.

[0109] It can be understood that the main function of the indoor heat exchanger is to conduct heat exchange. When there is enough refrigerant flowing in the heat exchanger, it can efficiently absorb or release heat and maintain the set temperature difference.

[0110] If refrigerant leakage occurs, the refrigerant filling amount in the heat exchanger decreases, resulting in a decrease in heat exchange efficiency. This means that the heat absorbed or released by the heat exchanger decreases, and the temperature difference between the inlet and outlet will be smaller than that during normal operation.

[0111] Therefore, in this embodiment, the system will set a temperature difference threshold according to the design parameters and performance requirements of the heat exchanger, and this threshold is the expected inlet and outlet temperature difference of the heat exchanger under normal refrigerant charge. Through the temperature sensors installed at the inlet and outlet of the heat exchanger, the system can monitor the temperature difference in real time and compare it with the set temperature difference threshold.

[0112] If the monitored temperature difference is less than the set temperature difference threshold, the system will determine that there is a refrigerant leak and mark the indoor unit 300 as a "leaking indoor unit".

[0113] If the monitored temperature difference is greater than or equal to the set temperature difference threshold, the system will consider that the refrigerant charge of the heat exchanger is normal and there is no leak, and mark the indoor unit 300 as a "non-leaking indoor unit".

[0114] In this way, this embodiment utilizes the direct relationship between the performance of the heat exchanger and the refrigerant charge. By monitoring the change of this key parameter, the refrigerant leak problem can be discovered and handled in time, thus ensuring the safe and efficient operation of the air conditioning system.

[0115] According to some embodiments of the present invention, after the step of determining the refrigerant leak situation of each indoor unit 300 according to the parameter information of each indoor unit 300, marking the indoor unit 300 with refrigerant leak as a leaking indoor unit, and marking the indoor unit 300 without refrigerant leak as a non-leaking indoor unit, it further includes: When it is determined that there is a leaking indoor unit in the air conditioner, then control the wired controller of the air conditioner and / or the lamp panel with double 8 display on the upper panel of the air conditioner to perform sound alarm and / or light alarm, and / or, control the centralized controller of the air conditioner to display and output an error code.

[0116] In this embodiment, several alarm methods after refrigerant leak are given, and the specific introduction is as follows: Once the system determines that there is a leaking indoor unit, it will activate the sound alarm system on the wired controller or the lamp panel with double 8 display on the upper panel of the air conditioner. This sound alarm can be a continuous beeping sound, a series of ringing sounds or a specific alarm melody, aiming to attract the user's attention.

[0117] Combined with the sound alarm or used alone, the light alarm will be emitted through the LED lights or display screen on the wired controller or the panel lamp panel. This may include flashing lights, continuous display of a specific color (such as red usually indicating danger or warning), to visually remind the user of the occurrence of the leak.

[0118] The centralized controller (centralized control device) will display and output an error code. These error codes are preset and are associated with specific leak situations or system failures. The error codes provide diagnostic information for users and help users and maintenance personnel quickly identify the problem.

[0119] In this way, through these alarm and prompt measures, the present invention can not only detect and mark refrigerant leakage in a timely manner, but also remind users and maintenance personnel to take actions in various ways, thereby improving the safety and reliability of the air-conditioning system.

[0120] A specific embodiment of the leakage control method of the present invention is given below.

[0121] After the R32 refrigerant in the indoor unit 300 leaks, the in-unit detector (built-in detector or external detector) detects that the concentration reaches the alarm value, and the alarm value is set to 10% * LFL. A fault AA is reported 2 seconds after the alarm value is exceeded.

[0122] The control of the leaking indoor unit is as follows.

[0123] (1) The valve opening of the leaking indoor unit is 5 pls, and the line controller gives an audible and visual alarm or the lamp board with double 8 displays on the panel gives an audible and visual alarm, and the fault code is AA.

[0124] (2) Force the leaking indoor unit (regardless of whether the leaking indoor unit is in the operating state) to operate at high speed, and force the air deflector of the indoor unit with an air deflector to the maximum angle.

[0125] (3) Output a fresh air linkage dry contact signal so that the customer can connect a third-party exhaust fan 600 (of course, a relay needs to be added, and the exhaust fan 600 is powered separately from the air-conditioning system), and make the exhaust fan 600 operate.

[0126] (3) The mode (shutdown, forced cooling, etc.) of the leaking indoor unit follows the instructions of the outdoor unit.

[0127] At the same time, the non-leaking indoor units continue to operate normally. After the leaking indoor unit undergoes the above control operations and the concentration of its leaked refrigerant drops below 10% * LFL, the fault codes of the line controller, the centralized controller, and the lamp board with double 8 displays on the panel all become Ab. After that, the fan of the leaking indoor unit continues to operate at high speed and waits for the maintenance personnel to repair. After the maintenance personnel complete the repair, they manually eliminate the fault alarm Ab (or AA) of the leaking indoor unit.

[0128] The refrigerant leakage control device of the air conditioner provided by the present invention is described below. The refrigerant leakage control device of the air conditioner described below can be mutually referred to with the refrigerant leakage control method of the air conditioner described above.

[0129] As Figure 3 shown, for the refrigerant leakage control device of the air conditioner according to the third aspect embodiment of the present invention, the air conditioner includes a plurality of indoor units 300, and the control device 100 includes: An acquisition module 110, configured to receive a signal for turning on the air conditioner and acquire parameter information of each indoor unit 300; The first control module 120 is configured to determine the refrigerant leakage condition of each indoor unit 300 according to the parameter information of each indoor unit 300, mark the indoor unit 300 with refrigerant leakage as a leakage indoor unit, and mark the indoor unit 300 without refrigerant leakage as a non-leakage indoor unit; The second control module 130 is configured to control the non-leakage indoor units to continue normal operation and perform leakage remedial operations on the leakage indoor units.

[0130] Figure 4 An entity structure diagram of an electronic device is exemplified. As Figure 4 shown, the electronic device may include: a processor 810, a communications interface 820, a memory 830, and a communication bus 840. Among them, the processor 810, the communications interface 820, and the memory 830 communicate with each other through the communication bus 840. The processor 810 can call the logical instructions in the memory 830 to execute the refrigerant leakage control method of the air conditioner. The method includes: receiving a signal to turn on the air conditioner, and obtaining the parameter information of each indoor unit 300; determining the refrigerant leakage condition of each indoor unit 300 according to the parameter information of each indoor unit 300, marking the indoor unit 300 with refrigerant leakage as a leakage indoor unit, and marking the indoor unit 300 without refrigerant leakage as a non-leakage indoor unit; controlling the non-leakage indoor units to continue normal operation and performing leakage remedial operations on the leakage indoor units.

[0131] In addition, when the logical instructions in the above-mentioned memory 830 are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several 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 methods in various embodiments of the present invention. The foregoing storage medium includes: various media such as a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk, or an optical disc that can store program codes.

[0132] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the refrigerant leakage control method for an air conditioner provided by each of the above methods. The method includes: receiving a signal to turn on the air conditioner, and obtaining parameter information of each indoor unit 300; according to the parameter information of each indoor unit 300, determining the refrigerant leakage situation of each indoor unit 300, marking the indoor unit 300 with refrigerant leakage as a leaking indoor unit, and marking the indoor unit 300 without refrigerant leakage as a non-leaking indoor unit; controlling the non-leaking indoor units to continue normal operation, and performing a leakage remedy operation on the leaking indoor units.

[0133] In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it realizes the refrigerant leakage control method for an air conditioner provided by each of the above methods. The method includes: receiving a signal to turn on the air conditioner, and obtaining parameter information of each indoor unit 300; according to the parameter information of each indoor unit 300, determining the refrigerant leakage situation of each indoor unit 300, marking the indoor unit 300 with refrigerant leakage as a leaking indoor unit, and marking the indoor unit 300 without refrigerant leakage as a non-leaking indoor unit; controlling the non-leaking indoor units to continue normal operation, and performing a leakage remedy operation on the leaking indoor units.

[0134] The device embodiments described above are merely illustrative. 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 may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative labor.

[0135] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course also by hardware. Based on this understanding, the above technical solutions, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disc, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiments.

[0136] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An air conditioner, characterized in that, Including: A plurality of indoor units and outdoor units; A detection device for detecting parameter information of the indoor unit; A control device connected to the detection device, the control device including an acquisition module, a first control module and a second control module; Wherein, after receiving a signal to turn on the air conditioner, the acquisition module acquires the parameter information of each indoor unit sent by the detection device; the first control module is used to determine the refrigerant leakage situation of each indoor unit according to the parameter information of each indoor unit, and mark the indoor unit with refrigerant leakage as a leakage indoor unit, and mark the indoor unit without refrigerant leakage as a non-leakage indoor unit; the second control module is used to control the non-leakage indoor unit to continue to operate normally and perform a leakage remedy operation on the leakage indoor unit.

2. The air conditioner according to claim 1, characterized in that Specifically, the second control module is used for: If the concentration of the leaked refrigerant of the indoor unit is greater than or equal to the set refrigerant concentration, it is determined that the indoor unit has refrigerant leakage and is marked as a leakage indoor unit; If the concentration of the leaked refrigerant of the indoor unit is less than the set refrigerant concentration, it is determined that the indoor unit has no refrigerant leakage and is marked as a non-leakage indoor unit.

3. The air conditioner according to claim 2, wherein The leakage remedy operation specifically includes: controlling the fan of the leakage indoor unit to operate at a high gear wind speed, and controlling the air deflector of the leakage indoor unit to open to the maximum opening angle.

4. The air conditioner according to claim 2, characterized in that, The leakage remedy operation specifically includes: controlling the electronic expansion valve of the leakage indoor unit to close to the minimum opening degree, and / or controlling the cut-off valve of the valve box inside the leakage indoor unit to close and last for at least a set closing duration; Preferably, the determination method of the set closing duration is as follows: Acquire the current working mode of the leakage indoor unit; When the leakage indoor unit is in the cooling mode, determine that the set closing duration is the first closing duration; or when the leakage indoor unit is in the heating mode, determine that the set closing duration is the second closing duration; Wherein, the first closing duration is less than the second closing duration.

5. The air conditioner according to claim 2, characterized in that, The leakage remedy operation specifically includes: connecting a third-party exhaust fan to the leakage indoor unit and controlling the third-party exhaust fan to exhaust air from the leakage indoor unit; Preferably, in the leakage remedy operation, the operation of controlling the third-party exhaust fan to exhaust air from the leakage indoor unit specifically includes: controlling and adjusting the working parameters of the third-party exhaust fan according to the current concentration of the leaked refrigerant of the leakage indoor unit.

6. The air conditioner according to claim 1, characterized in that, Specifically, the second control module is used for: If the refrigerant circulation pressure of the indoor unit is less than the set refrigerant pressure, it is determined that the indoor unit has refrigerant leakage and is marked as a leakage indoor unit; If the refrigerant circulation pressure of the indoor unit is greater than or equal to the set refrigerant pressure, it is determined that the indoor unit has no refrigerant leakage and is marked as a non-leakage indoor unit.

7. The air conditioner according to claim 1, characterized in that, Specifically, the second control module is used for: If the temperature difference between the inlet and outlet of the indoor heat exchanger of the indoor unit is less than the set temperature difference, it is determined that the indoor unit has refrigerant leakage and is marked as a leakage indoor unit; If the temperature difference between the inlet and outlet of the indoor heat exchanger of the indoor unit is greater than or equal to the set temperature difference, it is determined that the indoor unit has no refrigerant leakage and is marked as a non-leakage indoor unit.

8. The air conditioner according to any one of claims 1 to 7, characterized in that, It also includes: An alarm device, connected to the control device, wherein the control device is configured to send an alarm signal to the alarm device when the air conditioner has a refrigerant leakage in the indoor unit, and the alarm device is configured to issue a refrigerant leakage alarm after receiving the alarm signal; the alarm device includes at least one of the wired controller, the lamp panel and the centralized controller of the air conditioner.

9. A refrigerant leakage control method for an air conditioner, characterized in that, The air conditioner includes a plurality of indoor units, and the method includes: Receiving a signal for turning on the air conditioner, and obtaining parameter information of each indoor unit; According to the parameter information of each indoor unit, determining the refrigerant leakage condition of each indoor unit, marking the indoor unit with refrigerant leakage as a leakage indoor unit, and marking the indoor unit without refrigerant leakage as a non-leakage indoor unit; Controlling the non-leakage indoor units to continue normal operation, and performing leakage remedial operations on the leakage indoor units.

10. A refrigerant leakage control device for an air conditioner, characterized in that, The air conditioner includes a plurality of indoor units, and the control device includes: An acquisition module, configured to receive a signal for turning on the air conditioner and obtain parameter information of each indoor unit; A first control module, configured to determine the refrigerant leakage condition of each indoor unit according to the parameter information of each indoor unit, mark the indoor unit with refrigerant leakage as a leakage indoor unit, and mark the indoor unit without refrigerant leakage as a non-leakage indoor unit; A second control module, configured to control the non-leakage indoor units to continue normal operation, and perform leakage remedial operations on the leakage indoor units.

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