Air conditioner, control method thereof and computer readable storage medium

Abstract

The invention discloses an air conditioner, a control method of the air conditioner and a computer readable storage medium, the air conditioner comprises an indoor unit and an outdoor unit, the indoor unit comprises a plurality of heat exchange units connected in parallel, the outdoor unit comprises a compressor, and the control method of the air conditioner comprises the steps that when refrigerant leakage happens to the heat exchange units in the multiple heat exchange units, the compressor is started; and an inlet of the heat exchange unit with refrigerant leakage is controlled to be closed, and the compressor is controlled to be in a working state. Therefore, according to the method, the inlet of the heat exchange unit with refrigerant leakage is controlled to be closed, the refrigerant is prevented from continuously flowing into the heat exchange unit, the refrigerant leakage condition of the heat exchange unit is reduced, meanwhile, the heat exchange unit without refrigerant leakage is kept to work normally, the air conditioner can operate normally, and the service life of the air conditioner is prolonged. And the working performance of the air conditioner and the user comfort are ensured.

Description

Technical Field

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

[0002] At present, refrigerants (coolants) with low global warming potential (Global Warming Potential, referred to as GWP) such as propane and R454B have been used in HVAC (Heating Ventilation and Air Conditioning) systems as substitutes for refrigerants such as R22, R410A, and R134A.

[0003] However, for air-conditioning systems using low GWP flammable refrigerants, once a refrigerant leak occurs, it is easy to cause safety hazards such as combustion and explosion. In the related art, when a refrigerant leak occurs in an air conditioner, the air conditioner is shut down to prevent the refrigerant from spreading further, but this control method reduces the working efficiency of the air conditioner and affects the user's comfort. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the first purpose of the present invention is to provide a control method for an air conditioner, by controlling the inlet of a heat exchange unit where refrigerant leakage occurs to be closed, the refrigerant is prevented from continuing to flow into the heat exchange unit, and the refrigerant leakage of the heat exchange unit is reduced, while the heat exchange unit where no refrigerant leakage occurs is kept to operate normally, so that the air conditioner can operate normally, and the working performance of the air conditioner and the user comfort are guaranteed.

[0005] A second object of the present invention is to provide a computer-readable storage medium.

[0006] The third object of the present invention is to provide an air conditioner.

[0007] A fourth object of the present invention is to provide an air conditioner.

[0008] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present invention proposes a control method for an air conditioner, the air conditioner comprising an indoor unit and an outdoor unit, the indoor unit comprising a plurality of heat exchange units connected in parallel, the outdoor unit comprising a compressor, the control method for the air conditioner comprising: when a refrigerant leak occurs in a heat exchange unit among the plurality of heat exchange units, controlling the inlet of the heat exchange unit where the refrigerant leak occurs to be closed, and controlling the compressor to be in a working state.

[0009] According to the control method of the air conditioner of the embodiment of the present invention, the air conditioner includes an indoor unit and an outdoor unit, the indoor unit includes a plurality of heat exchange units connected in parallel, and the outdoor unit includes a compressor. When a heat exchange unit among the plurality of heat exchange units has a refrigerant leak, the control method of the refrigerant leakage of the air conditioner controls the inlet of the heat exchange unit where the refrigerant leak occurs to be closed, and controls the compressor to be in a working state. Thus, the method controls the inlet of the heat exchange unit where the refrigerant leak occurs to be closed, prevents the refrigerant from continuing to flow into the heat exchange unit, reduces the refrigerant leakage of the heat exchange unit, and keeps the heat exchange unit where the refrigerant leak does not occur to operate normally, so that the air conditioner can operate normally, and ensures the working performance of the air conditioner and the comfort of the user.

[0010] In addition, the control method of the air conditioner according to the above embodiment of the present invention may also have the following additional technical features:

[0011] According to an embodiment of the present invention, when controlling the inlet of the heat exchange unit where the refrigerant leakage occurs to be closed, the control method of the air conditioner further includes: controlling the outlet of the heat exchange unit where the refrigerant leakage occurs to be closed.

[0012] According to one embodiment of the present invention, after controlling the inlet of the heat exchange unit where refrigerant leakage occurs to be closed, the control method of the air conditioner further includes: delaying a preset time or controlling the outlet of the heat exchange unit where refrigerant leakage occurs to be closed when the refrigerant content of the heat exchange unit where refrigerant leakage occurs is less than a preset content.

[0013] According to an embodiment of the present invention, the outdoor unit includes a refrigerant discharge pipeline, and the control method of the air conditioner further includes: controlling the refrigerant discharge pipeline to be in an open state to discharge the refrigerant to the outdoors.

[0014] According to an embodiment of the present invention, the control method of the air conditioner further includes: obtaining the low pressure of the air conditioner; when the low pressure is greater than a preset pressure, controlling the refrigerant discharge pipeline to be in an open state.

[0015] According to an embodiment of the present invention, the control method of the air conditioner further includes: determining the opening time of the refrigerant discharge pipeline according to the low pressure.

[0016] According to an embodiment of the present invention, the control method of the air conditioner further includes: acquiring an operation mode of the air conditioner; and determining an inlet and an outlet of a heat exchange unit where refrigerant leakage occurs according to the operation mode.

[0017] To achieve the above object, a second embodiment of the present invention provides a computer-readable storage medium on which a control program for an air conditioner is stored. When the control program for the air conditioner is executed by a processor, the above-mentioned control method for the air conditioner is implemented.

[0018] According to the computer-readable storage medium of an embodiment of the present invention, when the control program of the air conditioner stored thereon is executed by the processor, the above-mentioned control method of the air conditioner is implemented. Based on the above-mentioned control method of the air conditioner, the inlet of the heat exchange unit where the refrigerant leakage occurs is controlled to be closed to prevent the refrigerant from continuing to flow into the heat exchange unit, thereby reducing the refrigerant leakage of the heat exchange unit, and at the same time keeping the heat exchange unit without refrigerant leakage to work normally, so that the air conditioner can operate normally, thereby ensuring the working performance of the air conditioner and the comfort of the user.

[0019] To achieve the above-mentioned purpose, the third aspect of the present invention proposes an air conditioner, including a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor. When the processor executes the air conditioner control program, the above-mentioned air conditioner control method is implemented.

[0020] According to the air conditioner of the embodiment of the present invention, when the control program of the air conditioner is executed by the processor, the above-mentioned control method of the air conditioner is implemented. Based on the above-mentioned control method of the air conditioner, the inlet of the heat exchange unit where the refrigerant leakage occurs is controlled to be closed to prevent the refrigerant from continuing to flow into the heat exchange unit, thereby reducing the refrigerant leakage of the heat exchange unit. At the same time, the heat exchange unit where no refrigerant leakage occurs is kept to work normally, so that the air conditioner can operate normally, thereby ensuring the working performance of the air conditioner and the comfort of the user.

[0021] To achieve the above-mentioned purpose, the fourth aspect of the present invention proposes an air conditioner, comprising: an indoor unit and an outdoor unit, the indoor unit comprising a plurality of heat exchange units connected in parallel, and the outdoor unit comprising a compressor; a controller, for controlling the inlet of the heat exchange unit where the refrigerant leakage occurs to be closed, and controlling the compressor to be in a working state when a refrigerant leakage occurs in a heat exchange unit among the plurality of heat exchange units.

[0022] According to the air conditioner of the embodiment of the present invention, the indoor unit includes a plurality of heat exchange units connected in parallel, and the outdoor unit includes a compressor. When a heat exchange unit among the plurality of heat exchange units has a refrigerant leak, the controller controls the inlet of the heat exchange unit where the refrigerant leak occurs to be closed, and controls the compressor to be in a working state. Thus, the air conditioner controls the inlet of the heat exchange unit where the refrigerant leak occurs to be closed, thereby preventing the refrigerant from continuing to flow into the heat exchange unit, reducing the refrigerant leakage of the heat exchange unit, and keeping the heat exchange unit where the refrigerant leak does not occur to work normally, so that the air conditioner can operate normally, and the working performance of the air conditioner and the comfort of the user are guaranteed.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0025] Figure 2 is a system principle diagram of an air conditioner according to an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of connecting multiple heat exchange units according to one embodiment of the present invention;

[0027] Figure 4 is a flow chart of a method for controlling an air conditioner according to a specific embodiment of the present invention;

[0028] Figure 5 is a block diagram of an air conditioner according to an embodiment of the present invention;

[0029] Figure 6 is a block diagram of an air conditioner according to another embodiment of the present invention;

[0030] Figure 7 FIG. 1 is a block diagram of an air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] The following describes a control method for an air conditioner, a computer-readable storage medium, and an air conditioner according to embodiments of the present invention with reference to the accompanying drawings.

[0033] Figure 1 FIG. 4 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention.

[0034] In one embodiment of the present application, an air conditioner includes an indoor unit and an outdoor unit, the indoor unit includes a plurality of heat exchange units connected in parallel, and the outdoor unit includes a compressor.

[0035] Specifically, Figure 2 As shown, the air conditioner includes an indoor heat exchanger 11 provided in an indoor unit 10, and a compressor 21 and an outdoor heat exchanger 22 provided in an outdoor unit 20. The indoor heat exchanger 11 is composed of a plurality of heat exchange units connected in parallel, and the number of heat exchange units can be set according to actual conditions, for example, two, three, four, etc. Figure 3For example, the number of heat exchange units in the indoor heat exchanger 11 is two, namely the right zone heat exchange unit 111 and the left zone heat exchange unit 112. The right zone heat exchange unit 111 is also provided with a right zone refrigerant sensor, and the left zone heat exchange unit 112 is provided with a left zone refrigerant sensor. Among them, the first input pipeline 113 of the indoor heat exchanger 11 is connected to the outdoor heat exchanger 22, and the second input pipeline 115 is connected to the compressor 21.

[0036] Specifically, one end of the right zone heat exchange unit 111 is connected to the first end of the first flow dividing tee 114 through the right zone first input pipeline 1112, and a first electronic expansion valve 1111 is provided on the right zone first input pipeline 1112. The other end of the right zone heat exchange unit 111 is connected to the first end of the second flow dividing tee 116 through the right zone second input pipeline 1114, and a first solenoid valve 1115 is provided on the right zone second input pipeline 1114. One end of the left zone heat exchange unit 112 is connected to the second end of the first flow dividing tee 114 through the left zone first input pipeline 1122, and a second electronic expansion valve 1121 is provided on the left zone first input pipeline 1122. The other end of the left zone heat exchange unit 112 is connected to the second end of the second flow dividing tee 116 through the left zone second input pipeline 1124, and a second solenoid valve 1125 is provided on the left zone second input pipeline 1124. The third end of the first flow dividing tee 114 is connected to the outdoor heat exchanger 22 through the first input pipeline 113 , and the third end of the second flow dividing tee 116 is connected to the compressor 21 through the second input pipeline 115 .

[0037] The shape of the evaporator 11 can be A-shaped or M-shaped to ensure that the air blown by the indoor fan can pass through the right zone heat exchange unit 111 and the left zone heat exchange unit 112. The first flow dividing tee 114 and the second flow dividing tee 116 form two refrigerant circuits in the evaporator 11, and the zoning control of the evaporator can be achieved by controlling the corresponding electronic expansion valve and solenoid valve.

[0038] Below Figure 2 and Figure 3 Taking as an example, the control method of the present application is described in detail.

[0039] like Figure 1 As shown, the control method of the air conditioner according to the embodiment of the present invention includes:

[0040] S1, when a heat exchange unit among multiple heat exchange units has a refrigerant leak, the inlet of the heat exchange unit where the refrigerant leak occurs is controlled to be closed, and the compressor is controlled to be in a working state.

[0041] Specifically, the refrigerant concentration at the left zone heat exchange unit is obtained by the left zone refrigerant sensor, and whether the refrigerant leakage occurs in the left zone heat exchange unit is determined based on the refrigerant concentration of the left zone heat exchange unit. The refrigerant concentration at the right zone heat exchange unit is obtained by the right zone refrigerant sensor, and whether the refrigerant leakage occurs in the right zone heat exchange unit is determined based on the refrigerant concentration of the right zone heat exchange unit. For example, a preset concentration threshold value may be set in advance, and when the obtained refrigerant concentration reaches the preset concentration threshold value, it is determined that the refrigerant leakage occurs in the heat exchange unit.

[0042] Taking the refrigerant leakage in the left zone heat exchange unit as an example, when the refrigerant leakage is determined in the left zone heat exchange unit according to the refrigerant concentration in the left zone heat exchange unit, the inlet of the left zone heat exchange unit is closed to prevent the refrigerant from continuing to flow into the left zone heat exchange unit. At the same time, the operation of the compressor can be controlled. On the one hand, the refrigerant can be discharged from the left zone heat exchange unit at a faster speed. On the other hand, the corresponding work can continue to be performed through the right zone heat exchange unit where no refrigerant leakage occurs, such as continuing to complete cooling or heating, thereby ensuring the working performance of the air conditioner and the comfort of the user.

[0043] This embodiment realizes zoning control of the indoor heat exchanger through multiple parallel heat exchange units, accurately identifies and controls the heat exchange unit where refrigerant leakage occurs, which can avoid continuous leakage of refrigerant on the one hand, and ensure the normal operation of the air conditioner on the other hand, thereby improving user comfort.

[0044] In one embodiment of the present application, the control method of the air conditioner further includes: acquiring an operating mode of the air conditioner; and determining an inlet and an outlet of a heat exchange unit where refrigerant leakage occurs according to the operating mode.

[0045] Specifically, when the air conditioner is in cooling mode, the refrigerant flows from the outdoor heat exchanger to the indoor heat exchanger. At this time, the inlet of the heat exchange unit is the port where the electronic expansion valve is set, and the outlet is the port where the solenoid valve is set; when the air conditioner is in heating mode, the refrigerant flows from the compressor to the indoor heat exchanger. At this time, the inlet of the heat exchange unit is the port where the solenoid valve is set, and the outlet is the port where the electronic expansion valve is set. It should be noted that the above-mentioned electronic expansion valve and solenoid valve are set as controllable valves, which can be selected according to actual conditions and are not limited here. In this embodiment, the two ports of the heat exchange unit are respectively set with an electronic expansion valve and a solenoid valve. On the one hand, the effect of cost saving can be achieved. On the other hand, the electronic expansion valve can be used to control the flow in cooling mode and can only be used as a switch in heating mode. Therefore, the electronic expansion valve is set at the input end in cooling mode.

[0046] That is, the left zone refrigerant sensor or the right zone refrigerant sensor is used to detect whether the corresponding heat exchange unit has refrigerant leakage. If refrigerant leakage occurs, the operating state of the air conditioner is identified. When the air conditioner is in cooling mode, the electronic expansion valve of the corresponding leakage area is closed according to the feedback signal of the refrigerant sensor to cut off the refrigerant source, that is, the electronic expansion valve of the heat exchange unit where the refrigerant leakage occurs is closed to close its inlet. When the air conditioner is in heating mode, the solenoid valve of the corresponding leakage area is closed according to the feedback signal of the refrigerant sensor, that is, the solenoid valve of the heat exchange unit where the refrigerant leakage occurs is closed to close its inlet.

[0047] In one embodiment of the present application, when controlling the inlet of the heat exchange unit where the refrigerant leakage occurs to be closed, the control method of the air conditioner further includes: controlling the outlet of the heat exchange unit where the refrigerant leakage occurs to be closed.

[0048] That is to say, when the inlet of the heat exchange unit where the refrigerant leakage occurs is closed, or after the closure continues for a period of time, the outlet of the heat exchange unit where the refrigerant leakage occurs is controlled to be closed to completely isolate the leakage area, prevent the occurrence of refrigerant backflow, and effectively prevent further leakage of the refrigerant.

[0049] In one embodiment of the present application, after controlling the inlet of the heat exchange unit where the refrigerant leakage occurs to be closed, the control method of the air conditioner also includes: delaying a preset time or when the refrigerant content of the heat exchange unit where the refrigerant leakage occurs is less than a preset content, controlling the outlet of the heat exchange unit where the refrigerant leakage occurs to be closed.

[0050] Specifically, the preset time can be set according to actual conditions, for example, by referring to parameters such as the operating frequency of the compressor and the volume of the heat exchange unit. The refrigerant content can be determined based on the pressure obtained by the pressure sensor at the outlet of the heat exchange unit where the refrigerant leakage occurs. When the pressure value obtained by the pressure sensor at the outlet is less than the preset pressure threshold, it can be considered that the refrigerant content of the heat exchange unit where the refrigerant leakage occurs is less than the preset content, thereby controlling the outlet of the heat exchange unit where the refrigerant leakage occurs to be closed, without specific limitation.

[0051] For example, when the air conditioner is in cooling mode, the electronic expansion valve corresponding to the heat exchange unit where the refrigerant leaks is first controlled to be closed. After a delay of a preset time t, it is considered that the refrigerant in the heat exchange unit where the refrigerant leaks is basically exhausted under the action of the compressor, and the solenoid valve corresponding to the heat exchange unit where the refrigerant leaks is controlled to be closed to completely isolate the leakage area. When the air conditioner is in heating mode, the solenoid valve corresponding to the heat exchange unit where the refrigerant leaks is first controlled to be closed, and the electronic expansion valve corresponding to the heat exchange unit is controlled to be closed after a delay of a preset time t to completely isolate the leakage area.

[0052] When the heat exchange unit is controlled by zones and the heat exchange unit with refrigerant leakage is shut down, the volume in the air conditioner system becomes smaller, the refrigerant becomes relatively more, and the pressure in the air conditioner increases. In order to ensure that the air conditioner operates in the optimal state, the pressure in the air conditioner needs to be reduced to a normal level. For example, when there is less excess refrigerant, the pressure of the air conditioner can be reduced to a preset pressure range by reducing the operating frequency of the compressor and storing the excess refrigerant through the vapor-liquid separator; after the heat exchanger with refrigerant leakage is repaired and opened, the operating frequency of the compressor is controlled to return to the normal frequency to keep the pressure of the air conditioner within the preset pressure range.

[0053] However, the volume of the vapor-liquid separator is small, and it is difficult to store the refrigerant in the heat exchange unit. At the same time, after the heat exchange unit is zoned, the working performance of the air conditioner has been partially lost. If the operating frequency of the compressor is reduced, the working performance of the compressor will be further reduced. Therefore, in one embodiment of the present application, the outdoor unit includes a refrigerant discharge pipeline, and the control method of the air conditioner also includes: controlling the refrigerant discharge pipeline to be in an open state to discharge the refrigerant to the outside.

[0054] Specifically, refer to Figure 2 As shown, the refrigerant discharge pipeline 23 is arranged between the compressor 21 and the indoor heat exchanger 11, one end of which is connected to the pipeline between the compressor 21 and the indoor heat exchanger 11, and the other end faces the outdoors, and a control valve is provided to realize the switch control of the refrigerant discharge pipeline 23.

[0055] In the indoor heat exchanger zone control, after the heat exchange unit that is about to leak refrigerant is shut down, the volume in the air-conditioning system becomes smaller and the refrigerant becomes relatively more. In order to ensure that the air-conditioner operates in the optimal state, the refrigerant discharge pipeline 23 is controlled to be opened to discharge the excess refrigerant to the outside.

[0056] It should be noted that the refrigerant discharge pipeline 23 can be opened when the inlet of the heat exchange unit where the refrigerant leakage occurs is closed and the outlet is not closed, or when both the inlet and outlet of the heat exchange unit where the refrigerant leakage occurs are closed, and there is no limitation here.

[0057] In one embodiment of the present application, the control method of the air conditioner further includes: obtaining the low pressure of the air conditioner; when the low pressure is greater than a preset pressure, controlling the refrigerant discharge pipeline to be in an open state.

[0058] The low pressure is the evaporation pressure in the evaporator and the suction pressure of the compressor, which can be obtained by a pressure sensor set at the inlet of the compressor. Usually, the air conditioner has a normal low pressure range, which can be set according to the actual situation.

[0059] For example, when the outlet of the heat exchange unit where refrigerant leakage occurs is closed, the low pressure of the air conditioner is obtained. When it is determined that the low pressure is greater than the preset pressure, it is considered that there is too much refrigerant in the current air conditioning system, and the refrigerant discharge pipeline is controlled to be opened. During the opening process, the low pressure can be obtained in real time, and when the low pressure is less than or equal to the preset pressure, it is considered that the refrigerant content in the current air conditioning system is in the optimal state, and the refrigerant discharge pipeline is controlled to be closed to stop the refrigerant discharge.

[0060] In addition to the above-mentioned technical solution of controlling the refrigerant discharge pipeline based on real-time low pressure during the refrigerant discharge process, in one embodiment of the present application, the control method of the air conditioner also includes: determining the opening time of the refrigerant discharge pipeline according to the low pressure.

[0061] That is to say, when the outlet of the heat exchange unit where refrigerant leakage occurs is closed, the low pressure of the air conditioner is obtained. When it is determined that the low pressure is greater than the preset pressure, the opening time of the refrigerant discharge pipeline is calculated according to the formula based on the obtained low pressure, that is, the discharge time of excess refrigerant is calculated, and the refrigerant discharge pipeline is controlled according to the determined opening time to improve the reliability of the air conditioner.

[0062] As a specific embodiment of the present application, Figure 4 As shown, the control method of the air conditioner may include the following steps:

[0063] S401, obtaining refrigerant concentrations of multiple heat exchange units.

[0064] S402, determine whether there is a refrigerant leakage in any heat exchange unit among the multiple heat exchange units. If yes, execute step S403; if no, execute step S401.

[0065] S403, obtaining the operation mode of the air conditioner.

[0066] S404: Determine the inlet and outlet of the heat exchange unit where the refrigerant leakage occurs according to the operation mode.

[0067] S405, controlling the inlet of the heat exchange unit where the refrigerant leakage occurs to be closed, and controlling the compressor to be in a working state.

[0068] S406, when the preset delay time is reached, the outlet of the heat exchange unit where the refrigerant leakage occurs is controlled to be closed.

[0069] S407, obtaining the low pressure of the air conditioner.

[0070] S408, determine whether the low pressure is greater than the preset pressure. If yes, execute step S409; if not, execute step S412.

[0071] S409, determining the opening time of the refrigerant discharge pipeline according to the low pressure.

[0072] S410, controlling the refrigerant discharge pipeline to be in an open state.

[0073] S411, determining whether the duration of the refrigerant discharge pipeline being in the open state reaches the open time. If yes, executing step S412; if not, executing step S410.

[0074] S4112, control the refrigerant discharge pipeline to shut down.

[0075] In summary, according to the control method of the air conditioner of the embodiment of the present invention, the air conditioner includes an indoor unit and an outdoor unit, the indoor unit includes a plurality of heat exchange units connected in parallel, and the outdoor unit includes a compressor. When a heat exchange unit among the plurality of heat exchange units has a refrigerant leak, the control method of the air conditioner controls the inlet of the heat exchange unit where the refrigerant leak occurs to be closed, and controls the compressor to be in a working state. Thus, the method controls the inlet of the heat exchange unit where the refrigerant leak occurs to be closed, prevents the refrigerant from continuing to flow into the heat exchange unit, reduces the refrigerant leakage of the heat exchange unit, and keeps the heat exchange unit where the refrigerant leak does not occur to operate normally, so that the air conditioner can operate normally, and ensures the working performance of the air conditioner and the comfort of the user.

[0076] Corresponding to the above embodiment, the present invention also proposes a computer-readable storage medium.

[0077] The computer-readable storage medium of the embodiment of the present invention stores a control program of an air conditioner, and the control program of the air conditioner implements the above-mentioned control method of the air conditioner when executed by a processor.

[0078] According to the computer-readable storage medium of an embodiment of the present invention, when the control program of the air conditioner stored thereon is executed by the processor, the above-mentioned control method of the air conditioner is implemented. Based on the above-mentioned control method of the air conditioner, the inlet of the heat exchange unit where the refrigerant leakage occurs is controlled to be closed to prevent the refrigerant from continuing to flow into the heat exchange unit, thereby reducing the refrigerant leakage of the heat exchange unit, and at the same time keeping the heat exchange unit without refrigerant leakage to work normally, so that the air conditioner can operate normally, thereby ensuring the working performance of the air conditioner and the comfort of the user.

[0079] Corresponding to the above embodiment, the present invention also proposes an air conditioner.

[0080] like Figure 5 As shown, the air conditioner 100 of the embodiment of the present invention includes a memory 110, a processor 120, and an air conditioner control program stored in the memory 110 and executable on the processor 120. When the processor 120 executes the air conditioner control program, the above-mentioned air conditioner control method is implemented.

[0081] According to the air conditioner of the embodiment of the present invention, when the control program of the air conditioner is executed by the processor, the above-mentioned control method of the air conditioner is implemented. Based on the above-mentioned control method of the air conditioner, the inlet of the heat exchange unit where the refrigerant leakage occurs is controlled to be closed to prevent the refrigerant from continuing to flow into the heat exchange unit, thereby reducing the refrigerant leakage of the heat exchange unit. At the same time, the heat exchange unit where no refrigerant leakage occurs is kept to work normally, so that the air conditioner can operate normally, thereby ensuring the working performance of the air conditioner and the comfort of the user.

[0082] Corresponding to the above embodiment, the present invention also proposes an air conditioner.

[0083] like Figure 6 As shown, the air conditioner according to the embodiment of the present invention includes: an indoor unit 10 , an outdoor unit 20 and a controller 30 .

[0084] The indoor unit 10 includes a plurality of heat exchange units 101 connected in parallel, and the outdoor unit 20 includes a compressor 21. The controller 30 is used to control the inlet of the heat exchange unit 101 where the refrigerant leaks when a heat exchange unit 101 among the plurality of heat exchange units 101 leaks refrigerant to be closed, and to control the compressor 21 to be in a working state.

[0085] According to an embodiment of the present invention, when controlling the inlet of the heat exchange unit 101 where the refrigerant leakage occurs to be closed, the controller 30 is also used to control the outlet of the heat exchange unit 101 where the refrigerant leakage occurs to be closed.

[0086] According to one embodiment of the present invention, after controlling the inlet of the heat exchange unit 101 where the refrigerant leakage occurs to be closed, the controller 30 is also used to: delay a preset time or control the outlet of the heat exchange unit 101 where the refrigerant leakage occurs to be closed when the refrigerant content of the heat exchange unit 101 where the refrigerant leakage occurs is less than a preset content.

[0087] According to one embodiment of the present invention, Figure 7 As shown, the outdoor unit 20 includes a refrigerant discharge pipeline 23, and the controller 30 is further used to control the refrigerant discharge pipeline 23 to be in an open state to discharge the refrigerant to the outdoors.

[0088] According to an embodiment of the present invention, the controller 30 is further used to obtain the low pressure of the air conditioner, and when the low pressure is greater than a preset pressure, control the refrigerant discharge pipeline 23 to be in an open state.

[0089] According to an embodiment of the present invention, the controller 30 is further configured to determine the opening time of the refrigerant discharge pipeline 23 according to the low pressure.

[0090] According to an embodiment of the present invention, the controller 30 is further used to: obtain the operation mode of the air conditioner, and determine the inlet and outlet of the heat exchange unit 101 where the refrigerant leakage occurs according to the operation mode.

[0091] It should be noted that for details not disclosed in the air conditioner of the embodiment of the present invention, please refer to the details disclosed in the control method of the air conditioner of the above embodiment of the present invention, and the details will not be repeated here.

[0092] According to the air conditioner of the embodiment of the present invention, the indoor unit includes a plurality of heat exchange units connected in parallel, and the outdoor unit includes a compressor. When a heat exchange unit among the plurality of heat exchange units has a refrigerant leak, the controller controls the inlet of the heat exchange unit where the refrigerant leak occurs to be closed, and controls the compressor to be in a working state. Thus, the air conditioner controls the inlet of the heat exchange unit where the refrigerant leak occurs to be closed, thereby preventing the refrigerant from continuing to flow into the heat exchange unit, reducing the refrigerant leakage of the heat exchange unit, and keeping the heat exchange unit where the refrigerant leak does not occur to work normally, so that the air conditioner can operate normally, and the working performance of the air conditioner and the comfort of the user are guaranteed.

[0093] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0094] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0096] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0097] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0098] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner comprises an indoor unit and an outdoor unit, the indoor unit comprises a plurality of heat exchange units connected in parallel, the outdoor unit comprises a compressor, and the method comprises: When a heat exchange unit among the plurality of heat exchange units has a refrigerant leak, the inlet of the heat exchange unit where the refrigerant leak occurs is controlled to be closed, and the compressor is controlled to be in a working state.

2. The method according to claim 1, characterized in that: When controlling the inlet of the heat exchange unit where the refrigerant leakage occurs to be closed, the method further includes: Control the outlet of the heat exchange unit where refrigerant leakage occurs to close.

3. The method according to claim 1, characterized in that: After controlling the inlet of the heat exchange unit where the refrigerant leakage occurs to be closed, the method further includes: When the preset time is delayed or the refrigerant content of the heat exchange unit where the refrigerant leakage occurs is less than the preset content, the outlet of the heat exchange unit where the refrigerant leakage occurs is controlled to be closed.

4. The method according to any one of claims 1 to 3, characterized in that: The outdoor unit includes a refrigerant discharge pipeline, and the method further includes: The refrigerant discharge pipeline is controlled to be in an open state to discharge the refrigerant to the outside.

5. The method according to claim 4, characterized in that The method further comprises: Obtaining the low pressure of the air conditioner; When the low pressure is greater than a preset pressure, the refrigerant discharge pipeline is controlled to be in an open state.

6. The method according to claim 5, characterized in that The method further comprises: The opening time of the refrigerant discharge pipeline is determined according to the low pressure.

7. The method according to claim 2 or 3, characterized in that: The method further comprises: Acquire the operating mode of the air conditioner; The inlet and outlet of the heat exchange unit where the refrigerant leakage occurs are determined according to the operation mode.

8. A computer-readable storage medium, characterized in that: An air conditioner control program is stored thereon, and when the air conditioner control program is executed by a processor, an air conditioner control method according to any one of claims 1-7 is implemented.

9. An air conditioner, characterized in that: The invention comprises a memory, a processor and a control program of an air conditioner which is stored in the memory and can be run on the processor. When the processor executes the control program of the air conditioner, the control method of the air conditioner according to any one of claims 1 to 7 is implemented.

10. An air conditioner, characterized in that: include: An indoor unit and an outdoor unit, the indoor unit comprising a plurality of heat exchange units connected in parallel, and the outdoor unit comprising a compressor; The controller is used to control the inlet of the heat exchange unit where the refrigerant leakage occurs to be closed when there is a heat exchange unit among the multiple heat exchange units, and control the compressor to be in a working state.

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