Air conditioner with detachable heat exchanger and control method

Abstract

The invention provides an air conditioner with a detachable heat exchanger and a control method, and is applied to the field of air conditioner control, the method is applied to the air conditioner, the detachable heat exchanger is arranged on an outdoor unit of the air conditioner, and the detachable heat exchanger is connected into a refrigerant main pipeline in parallel through a valve assembly; the valve assembly is used for controlling the refrigerant to flow in the refrigerant main pipeline and / or the detachable heat exchanger; the method comprises the steps of receiving a target control instruction; and valves in the valve assembly are controlled according to a target control strategy corresponding to the target control instruction. According to the air conditioner with the detachable heat exchanger and the control method, the detachable heat exchanger is arranged to replace a maintenance metal plate, the utilization rate of the internal space of the outdoor unit is greatly increased, and the heat exchange efficiency of the outdoor unit is improved.

Description

Technical Field

[0001] This application relates to the field of air conditioner control, and particularly to an air conditioner with a detachable heat exchanger and a control method therefor. Background Art

[0002] With the continuous improvement of people's living standards and the continuous improvement of the intelligent level of household electrical appliances, intelligent household appliances are becoming more and more popular. Users can use the air conditioner for heating in winter to increase the indoor temperature; they can also use the air conditioner for cooling in summer to lower the indoor temperature.

[0003] In the related art, in order to facilitate maintenance, a section of space is reserved on the front inside of the outdoor unit of the air conditioner for placing a maintenance sheet metal. When the outdoor unit is being maintained, the maintenance sheet metal can be opened to inspect the components inside the machine.

[0004] However, due to the presence of the maintenance sheet metal, a large amount of the area that could be used to place the heat exchanger is occupied, resulting in low utilization rate of the internal space of the outdoor unit, and to a certain extent affecting the heat exchange efficiency of the outdoor unit. Summary of the Invention

[0005] The purpose of this application is to provide an air conditioner with a detachable heat exchanger and a control method therefor. By setting a detachable heat exchanger to replace the maintenance sheet metal, the utilization rate of the internal space of the outdoor unit is greatly improved, and the heat exchange efficiency of the outdoor unit is improved.

[0006] In a first aspect, this application provides an outdoor unit for a detachable heat exchanger, including: A detachable heat exchanger is provided on the outdoor unit of the air conditioner, and the detachable heat exchanger is connected in parallel to the refrigerant main pipeline through a valve assembly; the valve assembly is used to control the flow of refrigerant in the refrigerant main pipeline and / or the detachable heat exchanger.

[0007] Optionally, the valve assembly includes: a first electronic expansion valve provided on the refrigerant main pipeline, a second electronic expansion valve and a third electronic expansion valve respectively provided on two refrigerant branch pipelines at both ends of the first electronic expansion valve, a fourth electronic expansion valve provided on the detachable heat exchanger and connected to the second electronic expansion valve through a pipeline, and a fifth electronic expansion valve provided on the detachable heat exchanger and connected to the third electronic expansion valve through a pipeline; the pipeline between the second electronic expansion valve and the fourth electronic expansion valve is a detachable pipeline; the pipeline between the third electronic expansion valve and the fifth electronic expansion valve is a detachable pipeline; the opening degrees of the fourth electronic expansion valve and the fifth electronic expansion valve are adjustable.

[0008] Optionally, the valve assembly includes: a first three-way valve and a second three-way valve connected in series on the main refrigerant pipeline; a fourth electronic expansion valve disposed on the detachable heat exchanger and connected to the reversing port of the first three-way valve through a pipeline, and a fifth electronic expansion valve disposed on the detachable heat exchanger and connected to the reversing port of the second three-way valve through a pipeline; the pipeline between the reversing port of the first three-way valve and the fourth electronic expansion valve is a detachable pipeline; the pipeline between the reversing port of the second three-way valve and the fifth electronic expansion valve is a detachable pipeline; the opening degrees of the fourth electronic expansion valve and the fifth electronic expansion valve are adjustable.

[0009] In a second aspect, the present application provides an air conditioner control method for an outdoor unit of a detachable heat exchanger, which is applied to the air conditioner as described in the first aspect above. The method includes: receiving a target control instruction; controlling the valves in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction; wherein, the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger.

[0010] Optionally, the controlling the valves in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction includes: when the target control instruction is the maintenance instruction, controlling the first electronic expansion valve of the air conditioner to open, and controlling the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve of the air conditioner to close; Alternatively, when the target control instruction is the maintenance instruction, controlling the inlet and outlet of the first three-way valve of the air conditioner to conduct, the inlet and outlet of the second three-way valve of the air conditioner to conduct, and controlling the fourth electronic expansion valve and the fifth electronic expansion valve to close.

[0011] Optionally, controlling the valve in the valve assembly of the air conditioner according to the target control strategy corresponding to the target control instruction includes: when the target control instruction is the cooling instruction or the heating instruction, controlling the first electronic expansion valve of the air conditioner to close, and controlling the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve and the fifth electronic expansion valve of the air conditioner to open; or, when the target control instruction is the cooling instruction or the heating instruction, controlling the inlet and the reversing port of the first three-way valve of the air conditioner to conduct, controlling the inlet and the reversing port of the second three-way valve of the air conditioner to conduct, and controlling the fourth electronic expansion valve and the fifth electronic expansion valve to open; wherein, when the target control instruction is the heating instruction, the fifth electronic expansion valve is used to throttle the refrigerant in the pipeline, and the throttled refrigerant realizes heat exchange through the detachable heat exchanger.

[0012] Optionally, a high-pressure pressure sensor is provided between the compressor and the four-way reversing valve, and a low-pressure pressure sensor is provided between the gas-liquid separator and the compressor; the high-pressure pressure sensor and the low-pressure pressure sensor are used to detect the high and low pressures of the system; controlling the valves in the valve assembly of the air conditioner according to the target control strategy corresponding to the target control instruction includes: when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the cooling mode, controlling the first electronic expansion valve of the air conditioner to close, and controlling the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve of the air conditioner to open, while increasing the opening degree of the fourth electronic expansion valve and decreasing the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger, until the high and low pressures meet the first preset threshold, and then controlling the outdoor unit to operate in the cooling mode through the cooling instruction; or, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the cooling mode, controlling the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and controlling the fourth electronic expansion valve and the fifth electronic expansion valve of the air conditioner to open, while increasing the opening degree of the fourth electronic expansion valve and decreasing the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger, until the high and low pressures meet the first preset threshold, and then controlling the outdoor unit to operate in the cooling mode through the cooling instruction; or, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the heating mode, controlling the first electronic expansion valve to close, and controlling the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open, while decreasing the opening degree of the fourth electronic expansion valve and increasing the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger, until the high and low pressures meet the second preset threshold, and then controlling the outdoor unit to operate in the heating mode through the heating instruction; or, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the heating mode, controlling the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and controlling the fourth electronic expansion valve and the fifth electronic expansion valve to open, while decreasing the opening degree of the fourth electronic expansion valve and increasing the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger, until the high and low pressures meet the second preset threshold, and then controlling the outdoor unit to operate in the heating mode through the heating instruction.

[0013] Optionally, a high-pressure pressure sensor is provided between the compressor and the four-way reversing valve, and a low-pressure pressure sensor is provided between the gas-liquid separator and the compressor; the high-pressure pressure sensor and the low-pressure pressure sensor are used to detect the high and low pressures of the system; controlling the valves in the valve assembly of the air conditioner according to the target control strategy corresponding to the target control instruction includes: when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the cooling mode, controlling the first electronic expansion valve of the air conditioner to close, and controlling the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve of the air conditioner to open, and at the same time reducing the opening degree of the fourth electronic expansion valve and increasing the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the third preset threshold, and then controlling the outdoor unit to operate in the cooling mode through the cooling instruction; or, when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the cooling mode, controlling the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and controlling the fourth electronic expansion valve and the fifth electronic expansion valve to open, and at the same time reducing the opening degree of the fourth electronic expansion valve and increasing the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the third preset threshold, and then controlling the outdoor unit to operate in the cooling mode through the cooling instruction; or, when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the heating mode, controlling the first electronic expansion valve to close, and controlling the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open, and at the same time increasing the opening degree of the fourth electronic expansion valve and reducing the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the fourth preset threshold, and then controlling the outdoor unit to operate in the heating mode through the heating instruction; when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the heating mode, controlling the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and controlling the fourth electronic expansion valve and the fifth electronic expansion valve to open, and at the same time increasing the opening degree of the fourth electronic expansion valve and reducing the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the fourth preset threshold, and then controlling the outdoor unit to operate in the heating mode through the heating instruction.

[0014] In a third aspect, the present application further provides an air conditioner control device for an outdoor unit of a detachable heat exchanger, which is applied to the air conditioner as described in the first aspect above. The device includes: a receiving module for receiving a target control instruction; a control module for controlling the valves in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction; wherein the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger.

[0015] Optionally, the control module is specifically configured to, when the target control instruction is the maintenance instruction, control the first electronic expansion valve to open, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to close; the control module is further specifically configured to, when the target control instruction is the maintenance instruction, control the inlet and outlet of the first three-way valve of the air conditioner to be conducted, the inlet and outlet of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to close.

[0016] Optionally, the control module is specifically configured to, when the target control instruction is the refrigeration instruction or the heating instruction, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open; the control module is further specifically configured to, when the target control instruction is the refrigeration instruction or the heating instruction, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open; wherein, when the target control instruction is the heating instruction, the fifth electronic expansion valve is used to throttle the refrigerant in the pipeline, and the throttled refrigerant realizes heat exchange through the detachable heat exchanger.

[0017] Optionally, a high-pressure pressure sensor is provided between the compressor and the four-way reversing valve, and a low-pressure pressure sensor is provided between the gas-liquid separator and the compressor; the high-pressure pressure sensor and the low-pressure pressure sensor are used to detect the high and low pressures of the system.

[0018] Optionally, the control module is specifically configured to, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the cooling mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and decrease the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the first preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction; the control module is specifically further configured to, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the cooling mode, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, control the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve of the air conditioner to open. At the same time, increase the opening degree of the fourth electronic expansion valve and decrease the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the first preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction; the control module is specifically further configured to, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the heating mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, decrease the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the second preset threshold, and then control the outdoor unit to operate in the heating mode through the heating instruction; the control module is specifically further configured to, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the heating mode, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, control the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, decrease the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the second preset threshold, and then control the outdoor unit to operate in the heating mode through the heating instruction.

[0019] Optionally, the control module is specifically configured to, when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the cooling mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the third preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction; the control module is further specifically configured to, when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the cooling mode, control the inlet and the commutation port of the first three-way valve of the air conditioner to be conducted, control the inlet and the commutation port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the third preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction; the control module is further specifically configured to, when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the heating mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and reduce the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the fourth preset threshold, and then control the outdoor unit to operate in the heating mode through the heating instruction; the control module is further specifically configured to, when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the heating mode, control the inlet and the commutation port of the first three-way valve of the air conditioner to be conducted, control the inlet and the commutation port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and reduce the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the fourth preset threshold, and then control the outdoor unit to operate in the heating mode through the heating instruction.

[0020] The present application also provides a computer program product, including computer programs / instructions, which when executed by a processor, implement the steps of the air conditioner control method for a detachable heat exchanger outdoor unit as described in any one of the above.

[0021] The present application also provides an electronic device, which can be an air conditioner. The air conditioner includes a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps of the air conditioner control method for the outdoor unit of the detachable heat exchanger as described in any one of the above are implemented.

[0022] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the air conditioner control method for the outdoor unit of the detachable heat exchanger as described in any one of the above are implemented.

[0023] The air conditioner and control method for the detachable heat exchanger provided by the present application. A detachable heat exchanger is provided on the outdoor unit of the air conditioner. The detachable heat exchanger is connected in parallel to the refrigerant main pipeline through a valve assembly. The valve assembly is used to control the flow of refrigerant in the refrigerant main pipeline and / or the detachable heat exchanger. The method includes: receiving a target control instruction; controlling the valves in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction. Among them, the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction. The maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger. The refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger. In this way, by setting a detachable heat exchanger to replace the maintenance sheet metal, the utilization rate of the internal space of the outdoor unit is greatly improved, and the heat exchange efficiency of the outdoor unit is improved. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the present application 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 application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic diagram of the operating principle of the air conditioner provided by the present application; Figure 2 It is a schematic diagram of the internal structure of the outdoor unit of the air conditioner provided by the present application; Figure 3 It is a schematic flow diagram of the air conditioner control method for the outdoor unit of the detachable heat exchanger provided by the present application; Figure 4 It is a schematic structural diagram of the air conditioner control device for the outdoor unit of the detachable heat exchanger provided by the present application; Figure 5It is a schematic structural diagram of the electronic device provided by this application. Specific embodiments

[0026] To make the objectives, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below with reference to the accompanying drawings in this application. Apparently, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0027] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order different from those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0028] The following will describe in detail the operating principle of the air conditioner involved in the embodiments of this application: As Figure 1 shown, the compressor compresses the refrigerant (refrigerant medium), and transports it to the condenser through a pipeline. The high-temperature and high-pressure gaseous refrigerant releases heat in the condenser and becomes a medium-temperature and high-pressure liquid refrigerant. Then, the medium-temperature and high-pressure liquid refrigerant becomes a low-temperature and low-pressure liquid refrigerant after being depressurized by a capillary tube (throttling unit). The low-temperature and low-pressure liquid refrigerant is transported to the evaporator and evaporates from a liquid to a gas, and absorbs a large amount of heat during the evaporation process. Finally, the low-temperature and low-pressure gaseous refrigerant in the evaporator is transported to the compressor and participates in the next cycle. When the air conditioner is cooling, the heat exchanger of the outdoor unit is the condenser, and the heat exchanger of the indoor unit is the evaporator; conversely, when the air conditioner is heating, the heat exchanger of the outdoor unit is the evaporator, and the heat exchanger of the indoor unit is the condenser.

[0029] Currently, the sheet metal of the maintenance board of the outdoor unit of the top discharge multi-connected air conditioner occupies a large heat exchange area, resulting in a waste of heat exchange space resources and making the air field of the outdoor unit of the top discharge air conditioner uneven. In the related art, in order to facilitate maintenance, the outdoor unit of the top discharge air conditioner will reserve a part without a heat exchanger at the front of the machine to place the sheet metal of the maintenance board, which is convenient for opening the maintenance board to repair the internal components of the machine. However, the large area occupied by the air conditioner maintenance sheet metal will waste a large heat exchange area.

[0030] In view of the above technical problems existing in the related art, an embodiment of the present application provides an air conditioner, which uses a detachable heat exchanger to replace the maintenance board, so that the area where the maintenance board is located can also be used for heat exchange, not only improving the utilization rate of the internal space of the outdoor unit, but also improving the heat exchange efficiency of the outdoor unit.

[0031] As Figure 2 shown, it is a schematic diagram of the internal structure of the outdoor unit of the air conditioner provided by the embodiment of the present application. A detachable heat exchanger is provided on the outdoor unit of the air conditioner. The detachable maintenance board heat exchanger has two pipes, one inlet and one outlet, and is connected to the system through threads. The detachable heat exchanger is connected in parallel to the refrigerant main pipeline through a valve assembly; the valve assembly is used to control the flow of refrigerant in the refrigerant main pipeline and / or the detachable heat exchanger. The valve assembly includes: a first electronic expansion valve F1 provided on the refrigerant main pipeline, a second electronic expansion valve F2 and a third electronic expansion valve F3 respectively provided on two refrigerant branch pipelines at both ends of the first electronic expansion valve, a fourth electronic expansion valve F4 provided on the detachable heat exchanger and connected to the second electronic expansion valve F2 through a pipeline, and a fifth electronic expansion valve F5 provided on the detachable heat exchanger and connected to the third electronic expansion valve through a pipeline; the pipeline between the second electronic expansion valve F2 and the fourth electronic expansion valve F4 is a movable detachable pipeline, that is, the middle of the pipeline can be disconnected; the pipeline between the third electronic expansion valve F3 and the fifth electronic expansion valve F5 is a detachable pipeline; the opening degrees of the fourth electronic expansion valve F4 and the fifth electronic expansion valve F5 are adjustable.

[0032] In another possible implementation manner, the above-mentioned first electronic expansion valve F1, second electronic expansion valve F2 and third electronic expansion valve F3 can be replaced by two three-way valves, that is, the valve assembly includes: a first three-way valve and a second three-way valve connected in series on the refrigerant main pipeline; a fourth electronic expansion valve provided on the detachable heat exchanger and connected to the switching port of the first three-way valve through a pipeline, and a fifth electronic expansion valve provided on the detachable heat exchanger and connected to the switching port of the second three-way valve through a pipeline; the pipeline between the switching port of the first three-way valve and the fourth electronic expansion valve is a detachable pipeline; the pipeline between the switching port of the second three-way valve and the fifth electronic expansion valve is a detachable pipeline; the opening degrees of the fourth electronic expansion valve and the fifth electronic expansion valve are adjustable.

[0033] It should be noted that the outlets of the above-mentioned first three-way valve and second three-way valve are connected through a pipeline to realize the free switching of the refrigerant flow direction.

[0034] Next, in conjunction with the accompanying drawings, the air conditioner control method for the outdoor unit with a detachable heat exchanger provided by the embodiment of the present application will be described in detail through specific embodiments and their application scenarios.

[0035] As Figure 3 shown, an air conditioner control method for an outdoor unit of a detachable heat exchanger provided by an embodiment of the present application may include the following steps 301 and 302: Step 301: Receive a target control instruction.

[0036] Wherein, the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger.

[0037] Exemplarily, in an embodiment of the present application, when different control instructions are triggered, the valves in the valve assembly can be controlled differently to achieve control in the refrigeration mode, the heating mode, the maintenance mode, the refrigerant storage mode, and the refrigerant release mode.

[0038] Step 302: Control the valves in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction.

[0039] Exemplarily, in an embodiment of the present application, the control of the refrigerant flow direction and flow rate can be achieved by controlling each electronic expansion valve in the valve assembly.

[0040] Specifically, for the above-mentioned maintenance mode, the above step 302 may include the following step 302a1 or step 302a2: Step 302a1: When the target control instruction is the maintenance instruction, control the first electronic expansion valve to open, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to close.

[0041] Step 302a2: When the target control instruction is the maintenance instruction, control the first electronic expansion valve of the air conditioner to open, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve of the air conditioner to close.

[0042] Exemplarily, as Figure 2As shown, in the maintenance mode, the detachable heat exchanger is not incorporated into the system operation. At this time, the first electronic expansion valve F1 can be opened, and the second electronic expansion valve F2, the third electronic expansion valve F3, the fourth electronic expansion valve F4 and the fifth electronic expansion valve F5 can be closed. In this state, the air conditioning system can operate independently, and the detachable heat exchanger can be removed to facilitate maintenance personnel to repair the internal parts of the outdoor unit.

[0043] It should be noted that, in the embodiment of the present application, closing the first electronic expansion valve and opening the second and third electronic expansion valves have the same effect as connecting the inlet and the reversing port of the first three-way valve and connecting the inlet and the reversing port of the second three-way valve; opening the first electronic expansion valve and closing the second and third electronic expansion valves have the same effect as connecting the inlet and the outlet of the first three-way valve and connecting the inlet and the outlet of the second three-way valve. For the convenience of description and to avoid repetition, the embodiment of the present application is described by taking opening and closing the electronic expansion valve as an example.

[0044] Specifically, for the cooling mode and the heating mode, the step 302 may include the following steps 302b1 or 302b2: Step 302b1, when the target control instruction is the cooling instruction or the heating instruction, control the first electronic expansion valve to be closed, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve and the fifth electronic expansion valve to be opened.

[0045] Step 302b2, when the target control instruction is the cooling instruction or the heating instruction, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conductive, control the inlet and the reversing port of the second three-way valve of the air conditioner to be conductive, and control the fourth electronic expansion valve and the fifth electronic expansion valve to be open.

[0046] Wherein, when the target control instruction is the heating instruction, the fifth electronic expansion valve is used to throttle the refrigerant in the pipeline, and the throttled refrigerant realizes heat exchange through the detachable heat exchanger.

[0047] Exemplarily, when the air conditioner operates in cooling mode, the first electronic expansion valve F1 can be closed, and the second electronic expansion valve F2, the third electronic expansion valve F3, the fourth electronic expansion valve F4 and the fifth electronic expansion valve F5 can be opened. At this time, the detachable heat exchanger is used as a condenser.

[0048] Exemplarily, when the air conditioner is operating in the heating mode, the first electronic expansion valve F1 can be closed, and the second electronic expansion valve F2, the third electronic expansion valve F3, the fourth electronic expansion valve F4, and the fifth electronic expansion valve F5 can be opened. At this time, the detachable heat exchanger is used as an evaporator, and the fifth electronic expansion valve F5 can adjust the opening degree to enable the refrigerant to exchange heat in the detachable heat exchanger after throttling through the fifth electronic expansion valve F5.

[0049] Exemplarily, as Figure 2 shown, in order to store and release the refrigerant by using the detachable heat exchanger, a high-pressure pressure sensor C1 is arranged between the compressor and the four-way reversing valve, and a low-pressure pressure sensor C2 is arranged between the gas-liquid separator and the compressor; the high-pressure pressure sensor C1 and the low-pressure pressure sensor C2 are used to detect the high and low pressures of the system.

[0050] Specifically, for the above refrigerant storage mode, step 302 may include the following step 302c1 or step 302c2: Step 302c1: When the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the cooling mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and decrease the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger. After the high and low pressures meet the first preset threshold, control the outdoor unit to operate in the cooling mode through the cooling instruction.

[0051] Step 302c2: When the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the cooling mode, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, control the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve of the air conditioner to open. At the same time, increase the opening degree of the fourth electronic expansion valve and decrease the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger. After the high and low pressures meet the first preset threshold, control the outdoor unit to operate in the cooling mode through the cooling instruction.

[0052] Exemplarily, as Figure 2 shown, in the cooling mode, the refrigerant can be stored by increasing the opening degree of the fourth electronic expansion valve F4 and decreasing the opening degree of the fifth electronic expansion valve F5. When the high and low pressures are close to the target values, enter the maintenance mode (system independent operation mode), and re-determine the high and low pressures after running for a period of time T until the high and low pressures meet the requirements (i.e., meet the above first preset threshold).

[0053] Specifically, for the above refrigerant storage mode, step 302 may further include the following step 302d1 or step 302d2: Step 302d1: When the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the heating mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger. After the high and low pressures meet the second preset threshold, control the outdoor unit to operate in the heating mode through the heating instruction.

[0054] Step 302d2: When the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the heating mode, control the inlet and the reversing port of the first three-way valve of the air conditioner to conduct, control the inlet and the reversing port of the second three-way valve of the air conditioner to conduct, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger. After the high and low pressures meet the second preset threshold, control the outdoor unit to operate in the heating mode through the heating instruction.

[0055] Exemplarily, as Figure 2 shown, in the heating mode, the refrigerant can be stored by reducing the opening degree of the fourth electronic expansion valve F4 and increasing the opening degree of the fifth electronic expansion valve F5. When the high and low pressures are close to the target values, enter the maintenance mode (system independent operation mode), and re-determine the high and low pressures after running for a period of time T until the high and low pressures meet the requirements (i.e., meet the above second preset threshold).

[0056] Specifically, for the above refrigerant release mode, step 302 may include the following step 302e1 or step 302e2: Step 302e1: When the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the cooling mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger. After the high and low pressures meet the third preset threshold, control the outdoor unit to operate in the cooling mode through the cooling instruction.

[0057] Step 302e2: When the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the cooling mode, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, control the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the third preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction.

[0058] Exemplarily, as Figure 2 shown, in the cooling mode, the release of refrigerant can be achieved by reducing the opening degree of the fourth electronic expansion valve F4 and increasing the opening degree of the fifth electronic expansion valve F5. When the high and low pressures are close to the target values, enter the maintenance mode (system independent operation mode), re-determine the high and low pressures after running for a period of time T until the high and low pressures meet the requirements (i.e., meet the above-mentioned third preset threshold).

[0059] Specifically, for the above refrigerant release mode, step 302 may further include the following step 302f1 or step 302f2: Step 302f1: When the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the heating mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and reduce the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the fourth preset threshold, and then control the outdoor unit to operate in the heating mode through the heating instruction.

[0060] Step 302f2: When the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the heating mode, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, control the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and reduce the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the fourth preset threshold, and then control the outdoor unit to operate in the heating mode through the heating instruction.

[0061] Exemplarily, as Figure 2As shown, in the refrigeration mode, the opening of the fourth electronic expansion valve F4 can be increased and the opening of the fifth electronic expansion valve F5 can be reduced to achieve the release of the refrigerant. When the high and low pressures are close to the target values, the maintenance mode (system independent operation mode) is entered. After running for a period of time T, the high and low pressures are re-determined until the high and low pressures meet the requirements (that is, meet the above-mentioned fourth preset threshold).

[0062] The air conditioner control method for a detachable heat exchanger outdoor unit provided in an embodiment of the present application is applied to an air conditioner, wherein a detachable heat exchanger is provided on the outdoor unit of the air conditioner, and the detachable heat exchanger is connected in parallel to the refrigerant main line through a valve assembly; the valve assembly is used to control the flow of the refrigerant in the refrigerant main line and / or the detachable heat exchanger; the method comprises: receiving a target control instruction; controlling the valve in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction; wherein the target control instruction comprises any one of the following: a maintenance instruction, a cooling instruction, a heating instruction, a storage refrigerant instruction and a release refrigerant instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the cooling instruction, the heating instruction, the storage refrigerant instruction and the release refrigerant instruction are used to control the refrigerant to flow through the detachable heat exchanger. In this way, by providing a detachable heat exchanger to replace the maintenance sheet metal, the utilization rate of the internal space of the outdoor unit is greatly improved, and the heat exchange efficiency of the outdoor unit is improved.

[0063] It should be noted that the air conditioner control method for a detachable heat exchanger outdoor unit provided in the embodiment of the present application can be executed by an air conditioner control device for a detachable heat exchanger outdoor unit, or a control module in the air conditioner control device for a detachable heat exchanger outdoor unit for executing the air conditioner control method for a detachable heat exchanger outdoor unit. In the embodiment of the present application, the air conditioner control device for a detachable heat exchanger outdoor unit executing the air conditioner control method for a detachable heat exchanger outdoor unit is taken as an example to illustrate the air conditioner control device for a detachable heat exchanger outdoor unit provided in the embodiment of the present application.

[0064] It should be noted that, in the embodiments of the present application, the air conditioner control method for a detachable heat exchanger outdoor unit shown in the above-mentioned method drawings is illustrated by taking one of the drawings in the embodiments of the present application as an example. In specific implementation, the air conditioner control method for a detachable heat exchanger outdoor unit shown in the above-mentioned method drawings can also be implemented in combination with any other drawings that can be combined as shown in the above-mentioned embodiments, which will not be repeated here.

[0065] The air conditioner control device for a detachable heat exchanger outdoor unit provided in the present application is described below, and the air conditioner control method for a detachable heat exchanger outdoor unit described above and described below can be referenced to each other.

[0066] Figure 4 The structural schematic diagram of an air conditioner control device for an outdoor unit of a detachable heat exchanger provided by an embodiment of the present application is as follows Figure 4 shown, and specifically includes: a receiving module 401 for receiving a target control instruction; a control module 402 for controlling a valve in a valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction; wherein, the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger.

[0067] Optionally, the control module 402 is specifically configured to control the first electronic expansion valve to open and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to close when the target control instruction is the maintenance instruction; the control module 402 is specifically further configured to control the inlet and outlet of the first three-way valve of the air conditioner to conduct, the inlet and outlet of the second three-way valve of the air conditioner to conduct, and control the fourth electronic expansion valve and the fifth electronic expansion valve to close when the target control instruction is the maintenance instruction.

[0068] Optionally, the control module 402 is specifically configured to control the first electronic expansion valve to close and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open when the target control instruction is the refrigeration instruction or the heating instruction; the control module 402 is specifically further configured to control the inlet and the reversing port of the first three-way valve of the air conditioner to conduct, the inlet and the reversing port of the second three-way valve of the air conditioner to conduct, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open when the target control instruction is the refrigeration instruction or the heating instruction; wherein, when the target control instruction is the heating instruction, the fifth electronic expansion valve is used to throttle the refrigerant in the pipeline, and the throttled refrigerant exchanges heat through the detachable heat exchanger.

[0069] Optionally, a high-pressure pressure sensor is arranged between the compressor and the four-way reversing valve, and a low-pressure pressure sensor is arranged between the gas-liquid separator and the compressor; the high-pressure pressure sensor and the low-pressure pressure sensor are used to detect the high and low pressures of the system.

[0070] Optionally, the control module 402 is specifically configured to, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the cooling mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and decrease the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the first preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction; the control module 402 is further specifically configured to, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the cooling mode, control the inlet and the commutation port of the first three-way valve of the air conditioner to be conducted, control the inlet and the commutation port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve of the air conditioner to open. At the same time, increase the opening degree of the fourth electronic expansion valve and decrease the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the first preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction; the control module 402 is further specifically configured to, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the heating mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, decrease the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the second preset threshold, and then control the outdoor unit to operate in the heating mode through the heating instruction; the control module 402 is further specifically configured to, when the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the heating mode, control the inlet and the commutation port of the first three-way valve of the air conditioner to be conducted, control the inlet and the commutation port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, decrease the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the second preset threshold, and then control the outdoor unit to operate in the heating mode through the heating instruction.

[0071] Optionally, the control module 402 is specifically configured to, when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the cooling mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the third preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction; the control module 402 is specifically further configured to, when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the cooling mode, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the third preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction; the control module 402 is specifically further configured to, when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the heating mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and reduce the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the fourth preset threshold, and then control the outdoor unit to operate in the heating mode through the heating instruction; the control module 402 is specifically further configured to, when the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the heating mode, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and reduce the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the fourth preset threshold, and then control the outdoor unit to operate in the heating mode through the heating instruction.

[0072] The air conditioner control device for the outdoor unit of the detachable heat exchanger provided by the present application is applied to an air conditioner. A detachable heat exchanger is provided on the outdoor unit of the air conditioner, and the detachable heat exchanger is connected in parallel to the refrigerant main pipeline through a valve assembly; the valve assembly is used to control the flow of refrigerant in the refrigerant main pipeline and / or the detachable heat exchanger; the method includes: receiving a target control instruction; controlling the valve in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction; wherein, the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger. In this way, by setting a detachable heat exchanger to replace the maintenance sheet metal, the utilization rate of the internal space of the outdoor unit is greatly improved, and the heat exchange efficiency of the outdoor unit is improved.

[0073] Figure 5 An example of a schematic physical structure diagram of an electronic device, and the electronic device can be the above-mentioned air conditioner, as Figure 5 shown, the electronic device may include: a processor 510, a communication interface 520, a memory 530, and a communication bus 540. Among them, the processor 510, the communication interface 520, and the memory 530 communicate with each other through the communication bus 540. The processor 510 can call the logical instructions in the memory 530 to execute the air conditioner control method for the outdoor unit of the detachable heat exchanger. The method includes: receiving a target control instruction; controlling the valve in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction; wherein, the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger. In this way, by setting a detachable heat exchanger to replace the maintenance sheet metal, the utilization rate of the internal space of the outdoor unit is greatly improved, and the heat exchange efficiency of the outdoor unit is improved.

[0074] In addition, when the logical instructions in the above-mentioned memory 530 are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application, 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. This 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 described in various embodiments of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs.

[0075] On the other hand, the present application also provides a computer program product. The computer program product includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the air conditioner control method for the outdoor unit of the detachable heat exchanger provided by the above-mentioned various methods. The method includes: receiving a target control instruction; controlling the valves in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction; wherein, the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger. In this way, by setting a detachable heat exchanger to replace the maintenance sheet metal, the utilization rate of the internal space of the outdoor unit is greatly improved, and the heat exchange efficiency of the outdoor unit is improved.

[0076] In another aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it is used to execute the air conditioner control method for the outdoor unit of the detachable heat exchanger provided above. The method includes: receiving a target control instruction; controlling the valves in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction; wherein, the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger. In this way, by setting a detachable heat exchanger to replace the maintenance sheet metal, the utilization rate of the internal space of the outdoor unit is greatly improved, and the heat exchange efficiency of the outdoor unit is improved.

[0077] 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. Those of ordinary skill in the art can understand and implement it without creative work.

[0078] 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, it can also be implemented by hardware. Based on this understanding, the essence of the above technical solution, 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 disk, 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 described in each embodiment or some parts of the embodiments.

[0079] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application 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 embodiments of the present application.

Claims

1. An air conditioner with a detachable heat exchanger, characterized in that a detachable heat exchanger is provided on the outdoor unit of the air conditioner, and the detachable heat exchanger is connected in parallel to the refrigerant main pipeline through a valve assembly; the valve assembly is used to control the flow of refrigerant in the refrigerant main pipeline and / or the detachable heat exchanger.

2. The air conditioner according to claim 1, characterized in that the valve assembly includes: a first electronic expansion valve provided on the refrigerant main pipeline, a second electronic expansion valve and a third electronic expansion valve respectively provided on two refrigerant branch pipelines at both ends of the first electronic expansion valve, a fourth electronic expansion valve provided on the detachable heat exchanger and connected to the second electronic expansion valve through a pipeline, and a fifth electronic expansion valve provided on the detachable heat exchanger and connected to the third electronic expansion valve through a pipeline; the pipeline between the second electronic expansion valve and the fourth electronic expansion valve is a detachable pipeline; the pipeline between the third electronic expansion valve and the fifth electronic expansion valve is a detachable pipeline; the opening degrees of the fourth electronic expansion valve and the fifth electronic expansion valve are adjustable.

3. The air conditioner according to claim 1, characterized in that the valve assembly includes: a first three-way valve and a second three-way valve connected in series on the refrigerant main pipeline; a fourth electronic expansion valve provided on the detachable heat exchanger and connected to the switching port of the first three-way valve through a pipeline, and a fifth electronic expansion valve provided on the detachable heat exchanger and connected to the switching port of the second three-way valve through a pipeline; the pipeline between the switching port of the first three-way valve and the fourth electronic expansion valve is a detachable pipeline; the pipeline between the switching port of the second three-way valve and the fifth electronic expansion valve is a detachable pipeline; the opening degrees of the fourth electronic expansion valve and the fifth electronic expansion valve are adjustable.

4. An air conditioner control method for an outdoor unit of a detachable heat exchanger, characterized in that, Applied to the air conditioner according to any one of claims 1 to 3, the method includes: receiving a target control instruction; controlling the valves in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction; wherein the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger.

5. The method according to claim 4, wherein The controlling the valves in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction includes: when the target control instruction is the maintenance instruction, controlling the first electronic expansion valve of the air conditioner to open, and controlling the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve of the air conditioner to close; Or, When the target control instruction is the maintenance instruction, control the inlet and outlet of the first three-way valve of the air conditioner to be conducted, the inlet and outlet of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to be closed.

6. The method according to claim 4, wherein The control of the valves in the valve assembly of the air conditioner according to the target control strategy corresponding to the target control instruction includes: When the target control instruction is the cooling instruction or the heating instruction, control the first electronic expansion valve of the air conditioner to be closed, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve and the fifth electronic expansion valve of the air conditioner to be opened; Or, When the target control instruction is the cooling instruction or the heating instruction, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve to be opened; Wherein, when the target control instruction is the heating instruction, the fifth electronic expansion valve is used to throttle the refrigerant in the pipeline, and the throttled refrigerant realizes heat exchange through the detachable heat exchanger.

7. The method according to claim 4, characterized in that, A high-pressure pressure sensor is arranged between the compressor and the four-way reversing valve, and a low-pressure pressure sensor is arranged between the gas-liquid separator and the compressor; the high-pressure pressure sensor and the low-pressure pressure sensor are used to detect the high and low pressures of the system; The control of the valves in the valve assembly of the air conditioner according to the target control strategy corresponding to the target control instruction includes: When the target control instruction is the refrigerant storage instruction and the current operation mode of the air conditioner is the cooling mode, control the first electronic expansion valve of the air conditioner to be closed, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve and the fifth electronic expansion valve of the air conditioner to be opened. At the same time, increase the opening degree of the fourth electronic expansion valve and decrease the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the first preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction; Or, When the target control instruction is the refrigerant storage instruction and the current operation mode of the air conditioner is the cooling mode, control the inlet and the reversing port of the first three-way valve of the air conditioner to be conducted, the inlet and the reversing port of the second three-way valve of the air conditioner to be conducted, and control the fourth electronic expansion valve and the fifth electronic expansion valve of the air conditioner to be opened. At the same time, increase the opening degree of the fourth electronic expansion valve and decrease the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the first preset threshold, and then control the outdoor unit to operate in the cooling mode through the cooling instruction; Or, When the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the heating mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the second preset threshold. Then, control the outdoor unit to operate in the heating mode through the heating instruction; Or, When the target control instruction is the refrigerant storage instruction and the current operating mode of the air conditioner is the heating mode, control the inlet and the commutation port of the first three-way valve of the air conditioner to conduct, control the inlet and the commutation port of the second three-way valve of the air conditioner to conduct, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to increase the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the second preset threshold. Then, control the outdoor unit to operate in the heating mode through the heating instruction.

8. The method according to claim 4, wherein A high-pressure pressure sensor is arranged between the compressor and the four-way reversing valve, and a low-pressure pressure sensor is arranged between the gas-liquid separator and the compressor; the high-pressure pressure sensor and the low-pressure pressure sensor are used to detect the high and low pressures of the system; Controlling the valves in the valve assembly of the air conditioner according to the target control strategy corresponding to the target control instruction includes: When the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the cooling mode, control the first electronic expansion valve of the air conditioner to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve of the air conditioner to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the third preset threshold. Then, control the outdoor unit to operate in the cooling mode through the cooling instruction; Or, When the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the cooling mode, control the inlet and the commutation port of the first three-way valve of the air conditioner to conduct, control the inlet and the commutation port of the second three-way valve of the air conditioner to conduct, and control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, reduce the opening degree of the fourth electronic expansion valve and increase the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger until the high and low pressures meet the third preset threshold. Then, control the outdoor unit to operate in the cooling mode through the cooling instruction; Or, When the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the heating mode, control the first electronic expansion valve to close, and control the second electronic expansion valve, the third electronic expansion valve, the fourth electronic expansion valve, and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and decrease the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger. Until the high and low pressures meet the fourth preset threshold, control the outdoor unit to operate in the heating mode through the heating instruction; When the target control instruction is the refrigerant release instruction and the current operating mode of the air conditioner is the heating mode, control the inlet and the reversing port of the first three-way valve of the air conditioner to conduct, and control the inlet and the reversing port of the second three-way valve of the air conditioner to conduct. Also, control the fourth electronic expansion valve and the fifth electronic expansion valve to open. At the same time, increase the opening degree of the fourth electronic expansion valve and decrease the opening degree of the fifth electronic expansion valve to reduce the total amount of refrigerant in the detachable heat exchanger. Until the high and low pressures meet the fourth preset threshold, control the outdoor unit to operate in the heating mode through the heating instruction.

9. An air conditioner control device for an outdoor unit of a detachable heat exchanger, characterized in that, Applied to the air conditioner according to any one of claims 1 to 3, the device includes: A receiving module, configured to receive a target control instruction; A control module, configured to control the valves in the valve assembly of the air conditioner according to a target control strategy corresponding to the target control instruction; Wherein, the target control instruction includes any one of the following: a maintenance instruction, a refrigeration instruction, a heating instruction, a refrigerant storage instruction, and a refrigerant release instruction; the maintenance instruction is used to control the refrigerant not to flow through the detachable heat exchanger; the refrigeration instruction, the heating instruction, the refrigerant storage instruction, and the refrigerant release instruction are used to control the refrigerant to flow through the detachable heat exchanger.

10. A computer-readable storage medium, characterized in that, It stores a computer program, and when the computer program is executed by a processor, it implements the steps of the air conditioner control method for the outdoor unit of the detachable heat exchanger according to any one of claims 3 to 8.

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