Air conditioner

Abstract

The utility model discloses an air conditioner, relates to the technical field of refrigeration, and aims to solve the problem that an outdoor heat exchanger of an air conditioner in the prior art cannot have higher heat exchange efficiency in both a heating mode and a refrigeration mode. The air conditioner comprises an outdoor heat exchanger, a second connector is communicated with one end of a first heat exchange pipeline, a third connector is communicated with one end of a second heat exchange pipeline, and when the air conditioner conducts refrigeration, refrigerants enter a first refrigerant pipeline from a first connector; the second circulation opening is communicated with the other end of the second heat exchange pipeline, the third circulation opening is communicated with the other end of the first heat exchange pipeline, and when the air conditioner conducts heating, refrigerants enter the second refrigerant pipeline from the first circulation opening; the first valve is connected to the first refrigerant pipeline and located between the second connector and the third connector. When the air conditioner heats, the first valve is opened, and when the air conditioner refrigerates, the first valve is closed. The air conditioner is used for adjusting the indoor temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to an air conditioner. Background Art

[0002] The outdoor heat exchanger of the air conditioner is usually compatible with cooling and heating needs. That is, when the air conditioner is in cooling mode, the outdoor heat exchanger acts as a condenser to condense and release heat the high-temperature and high-pressure refrigerant flowing through it. When the air conditioner is in heating mode, the outdoor heat exchanger acts as an evaporator to evaporate and absorb heat the low-temperature and low-pressure refrigerant flowing through it.

[0003] In the related art, multiple refrigerant pipelines are arranged in parallel in the outdoor heat exchanger. When the air conditioner is in cooling mode, high-temperature and high-pressure refrigerant flows through multiple refrigerant pipelines at the same time. When the air conditioner is in heating mode, low-temperature and low-pressure refrigerant also flows through multiple refrigerant pipelines at the same time. That is, when the air conditioner is in heating mode and cooling mode, the refrigerant flows through the same path in the outdoor heat exchanger.

[0004] However, since the heat transfer performance of the refrigerant in the high temperature and high pressure state is different from that in the low temperature and low pressure state, if the refrigerant flows through the same path in the outdoor heat exchanger in the heating mode and the cooling mode of the air conditioner, it will inevitably lead to poor heat exchange effect of the refrigerant in the outdoor heat exchanger in the heating mode, or poor heat exchange effect of the refrigerant in the outdoor heat exchanger in the cooling mode, thereby failing to make the outdoor heat exchanger have a high heat exchange efficiency in both the heating mode and the cooling mode. Utility Model Content

[0005] The embodiment of the utility model provides an air conditioner, which solves the problem in the prior art that the outdoor heat exchanger of the air conditioner cannot have a high heat exchange efficiency in both the heating mode and the cooling mode.

[0006] In order to achieve the above object, the embodiment of the utility model adopts the following technical solution:

[0007] According to the first aspect involved in the present application, an air conditioner is provided, the air conditioner includes a refrigerant circulation circuit and a reversing valve, the refrigerant circulation circuit allows the refrigerant to perform a refrigeration cycle in a circuit composed of a compressor, a condenser, a throttling device, and an evaporator, the compressor has an exhaust port and an air intake port, one of the condenser and the evaporator is an outdoor heat exchanger, and the other is an indoor heat exchanger; the reversing valve is connected to the refrigerant circulation circuit, the reversing valve has a first valve port connected to the exhaust port, a second valve port connected to the indoor heat exchanger, a third valve port connected to the air intake port, and a fourth valve port connected to the indoor heat exchanger, the first valve port is in reversing communication with one of the second valve port and the fourth valve port, and the third valve port is in reversing communication with the other of the second valve port and the fourth valve port; the outdoor heat exchanger includes a first heat exchange pipeline and a second heat exchange pipeline arranged in parallel; The loop circuit also includes a first refrigerant pipeline and a second refrigerant pipeline, the first refrigerant pipeline includes a first connection port, a second connection port and a third connection port which are arranged in sequence, the first connection port is connected to the second valve port, the second connection port is connected to one end of the first heat exchange pipeline, and the third connection port is connected to one end of the second heat exchange pipeline; the second refrigerant pipeline includes a first flow port, a second flow port and a third flow port which are arranged in sequence, the first flow port is connected to the first end of the indoor heat exchanger through a throttling device, the second flow port is connected to the other end of the second heat exchange pipeline, and the third flow port is connected to the other end of the first heat exchange pipeline; wherein a first valve is arranged on the first refrigerant pipeline, and the first valve is located between the second connection port and the third connection port; when the air conditioner is heating, the first valve is opened, and when the air conditioner is cooling, the first valve is closed.

[0008] In the air conditioner provided by the present application, when the air conditioner is cooling, the first valve is closed. At this time, a section of the first refrigerant pipeline between the second connection port and the third connection port is disconnected, and the refrigerant entering the first refrigerant pipeline can only enter the first heat exchange pipeline through the second connection port, and after flowing through the first heat exchange pipeline, it flows out to the second refrigerant pipeline through the third flow port, and will not enter the second heat exchange branch through the third connection port.

[0009] In this way, the refrigerant entering the outdoor heat exchanger cannot flow in all the pipes (pipes in parallel) in the outdoor heat exchanger, thereby reducing the pipes (pipes in parallel) through which the refrigerant flows in the outdoor heat exchanger. This can accelerate the flow rate of the refrigerant in the first heat exchange pipe to increase the amount of refrigerant flowing through the first heat exchange pipe, thereby increasing the heat exchange amount of the refrigerant in the outdoor heat exchanger and improving the heat exchange efficiency of the outdoor heat exchanger.

[0010] When the air conditioner is heating, the first valve is opened. At this time, a section of the first refrigerant pipeline between the second connection port and the third connection port is connected, and the refrigerant entering the second refrigerant pipeline can enter the first heat exchange pipeline through the third flow port, and after flowing through the first heat exchange pipeline, it flows out to the first refrigerant pipeline through the second connection port. At the same time, the refrigerant entering the second refrigerant pipeline can also enter the second heat exchange pipeline through the second flow port, and after flowing through the second heat exchange pipeline, it flows out to the first refrigerant pipeline through the third connection port.

[0011] In this way, the refrigerant entering the outdoor heat exchanger can flow in all the pipes (pipes in parallel) in the outdoor heat exchanger, so that the refrigerant flows through more pipes (pipes in parallel) in the outdoor heat exchanger. This can reduce the pressure loss of the refrigerant when it flows in the outdoor heat exchanger, making the refrigerant flow more slowly in the outdoor heat exchanger, so that the refrigerant can fully exchange heat in the outdoor heat exchanger, thereby improving the heat exchange efficiency of the outdoor heat exchanger.

[0012] In summary, by setting the first valve and opening the first valve when the air conditioner is heating and closing the first valve when the air conditioner is cooling, the outdoor heat exchanger can have a higher heat exchange efficiency when the air conditioner is heating and cooling, so that the capacity of the outdoor heat exchanger can be fully utilized to improve the energy efficiency of the air conditioner.

[0013] In some embodiments, the refrigerant circulation loop also includes a diverter, a first branch pipe, a second branch pipe, a third branch pipe and a second valve, the diverter includes an inlet, a first outlet and a second outlet, and the third flow port is connected to the inlet; one end of the first branch pipe is connected to the other end of the first heat exchange pipeline, and the other end of the first branch pipe is connected to the first outlet; one end of the second branch pipe is connected to the other end of the second heat exchange pipeline, and the other end of the second branch pipe is connected to the second flow port; one end of the third branch pipe is connected to the second outlet, and the other end of the third branch pipe is connected to one end of the second heat exchange pipeline; the second valve is connected to the second refrigerant pipeline and is located between the second flow port and the third flow port; when the air conditioner is heating, the second valve is opened, and when the air conditioner is cooling, the second valve is closed.

[0014] When the air conditioner is cooling, the outdoor heat exchanger can reduce the number of pipes through which the gaseous refrigerant flows to improve the heat exchange efficiency of the outdoor heat exchanger, and can make the refrigerant exchange heat in the first heat exchange pipe and the second heat exchange pipe in turn to further improve the heat exchange efficiency of the outdoor heat exchanger. When the air conditioner is heating, the outdoor heat exchanger can make the refrigerant flow through all pipes in the outdoor heat exchanger at the same time to improve the heat exchange efficiency of the outdoor heat exchanger.

[0015] In some embodiments, the inner diameter of the third branch pipe is smaller than the inner diameter of the first branch pipe. In this way, the flow rate of the refrigerant entering the third branch pipe from the first branch pipe through the flow divider will be further increased, so that the flow rate of the refrigerant after entering the third heat exchange pipe and the second heat exchange pipe will be increased, thereby increasing the heat exchange efficiency of the refrigerant when flowing in the third heat exchange pipe and the second heat exchange pipe, so as to further improve the heat exchange efficiency of the outdoor heat exchanger.

[0016] In some embodiments, the inner diameter of the first branch pipe is greater than or equal to 4 mm and less than or equal to 6 mm; and / or the inner diameter of the third branch pipe is greater than or equal to 3 mm and less than or equal to 5 mm.

[0017] In some embodiments, the outdoor heat exchanger further includes a third heat exchange pipeline; one end of the third heat exchange pipeline is connected to the third connecting port, and the other end of the third heat exchange pipeline is connected to the other end of the third branch pipeline. Through the above arrangement, when the air conditioner is cooling, the refrigerant can perform heat exchange in the third heat exchange pipeline to improve the heat exchange efficiency of the outdoor heat exchanger.

[0018] In some embodiments, the inner diameter of the second branch pipeline is smaller than the inner diameter of the first branch pipeline. In this way, when the air conditioner is heating, the refrigerant in the second refrigerant pipeline can directly enter the second branch pipeline without passing through the diverter, and then enter the second heat exchange pipeline. Therefore, making the inner diameter of the second branch pipeline smaller than the inner diameter of the first branch pipeline can avoid the amount of refrigerant entering the second branch pipeline too much, which causes the amount of refrigerant in the second branch pipeline to be unbalanced with the amount of refrigerant in the first branch pipeline, so that the flow rate of the refrigerant in each first heat exchange pipeline and the second heat exchange pipeline can be more uniform, so as to improve the heat exchange efficiency of the outdoor heat exchanger.

[0019] In some embodiments, the inner diameter of the second branch pipe is greater than or equal to 3 mm and less than or equal to 5 mm.

[0020] In some embodiments, the first outlet and the second outlet are both located above the inlet.

[0021] In some embodiments, the first valve is a first solenoid valve; and / or, the second valve is a second solenoid valve.

[0022] According to a second aspect of the present application, an air conditioner is provided, which includes a refrigerant circulation circuit and a reversing valve. The refrigerant circulation circuit allows the refrigerant to perform a refrigeration cycle in a circuit composed of a compressor, a condenser, a throttling device, and an evaporator. The compressor has an exhaust port and an air intake port. One of the condenser and the evaporator is an outdoor heat exchanger, and the other is an indoor heat exchanger. The reversing valve is connected to the refrigerant circulation circuit. The reversing valve has a first valve port connected to the exhaust port, a second valve port connected to the indoor heat exchanger, a third valve port connected to the air intake port, and a fourth valve port connected to the indoor heat exchanger. The first valve port is connected to one of the second valve port and the fourth valve port in a reversing manner, and the third valve port is connected to the other of the second valve port and the fourth valve port in a reversing manner. The outdoor heat exchanger includes a plurality of first heat exchange pipelines and a second heat exchange pipeline arranged in parallel. The refrigerant circulation circuit also includes a first refrigerant pipe The first refrigerant pipeline comprises a first connection port, a plurality of second connection ports and a third connection port which are arranged in sequence at intervals, the first connection port is connected to the second valve port, a second connection port is connected to one end of at least one first heat exchange pipeline; the third connection port is connected to one end of the second heat exchange pipeline; the second refrigerant pipeline comprises a first flow port, a second flow port and a third flow port which are arranged in sequence at intervals, the first flow port is connected to the first end of the indoor heat exchanger through a throttling device, the second flow port is connected to the other end of the second heat exchange pipeline, and the third flow port is connected to the other ends of the plurality of first heat exchange pipelines; wherein a first valve is arranged on the first refrigerant pipeline, the first valve is located between the second connection port and the third connection port which are adjacent to the third connection port; when the air conditioner is heating, the first valve is opened, and when the air conditioner is cooling, the first valve is closed.

[0023] It should be noted that the technical effects brought about by the implementation method of the second aspect can refer to the technical effects brought about by the corresponding implementation method in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the connection relationship diagrams of the air conditioner in the embodiment of the present application;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 3 This is a schematic diagram of the connection relationship of the air conditioner during cooling in the embodiment of the present application;

[0027] Figure 4 This is a schematic diagram of the connection relationship of the air conditioner when heating in the embodiment of the present application;

[0028] Figure 5 This is a schematic diagram of the structure of an outdoor heat exchanger in an embodiment of the present application;

[0029] Figure 6This is a schematic diagram of the structure of the heat exchange pipeline in the embodiment of the present application;

[0030] Figure 7 This is the second schematic diagram of the connection relationship of the air conditioner in the embodiment of the present application;

[0031] Figure 8 This is the third schematic diagram of the connection relationship of the air conditioner in the embodiment of the present application;

[0032] Fig. 9 This is a schematic diagram of the refrigerant flow in the air conditioner when the first valve is closed in the embodiment of the present application;

[0033] Fig.10 This is a schematic diagram of the refrigerant flow in the air conditioner when the first valve is opened in the embodiment of the present application;

[0034] Fig.11 This is the fourth schematic diagram of the connection relationship of the air conditioner in the embodiment of the present application;

[0035] Fig.12 This is the fifth schematic diagram of the connection relationship of the air conditioner in the embodiment of the present application;

[0036] Fig.13 for Fig.12 A magnified schematic diagram of the structure at B in the middle;

[0037] Fig.14 This is a schematic diagram of the refrigerant flow in the air conditioner when the first valve and the second valve are closed in the embodiment of the present application;

[0038] Fig.15 This is a schematic diagram of the refrigerant flow in the air conditioner when the first valve and the second valve are opened in the embodiment of the present application.

[0039] Reference numerals:

[0040] 1-indoor unit; 11-indoor heat exchanger;

[0041] 2-outdoor unit; 21-compressor; 211-intake port; 212-exhaust port;

[0042] 22-outdoor heat exchanger; 221-shell; 222-heat exchange pipeline; 222A-heat exchange pipeline; 222B-refrigerant pipeline; 222C-first heat exchange pipeline; 222D-second heat exchange pipeline; 223-first refrigerant pipeline; first connection port 223A; second connection port 223B; third connection port 223C; 224-second refrigerant pipeline; 224A-first flow port; 224B-second flow port; 224C-third flow port; 225-first valve; 226-diverter; 226A-inlet; 226B-first outlet; 226C-second outlet; 227-first branch pipeline; 228-second branch pipeline; 229-third branch pipeline; 22A-third heat exchange pipeline; 22B-second valve;

[0043] 23 - reversing valve; 231 - first valve port; 232 - second valve port; 233 - third valve port; 234 - fourth valve port; 24 - throttling device. DETAILED DESCRIPTION

[0044] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0045] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0046] 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0047] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0048] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0049] Air conditioners are a common household appliance that is widely used in daily life and are mainly used to regulate the temperature of indoor air.

[0050] The present application embodiment provides an air conditioner, such as Figure 1 As shown, the air conditioner includes an indoor unit 1 and an outdoor unit 2. The indoor unit 1 includes an indoor heat exchanger 11, and the outdoor unit 2 includes a compressor 21, an outdoor heat exchanger 22 and a reversing valve 23.

[0051] The compressor 21 has an air intake port 211 and an air exhaust port 212. Specifically, the air intake port 211 of the compressor 21 is used for air intake, and the refrigerant enters the compression chamber of the compressor 21 through the air intake port 211 to be compressed to form a high-temperature and high-pressure refrigerant. The high-temperature and high-pressure refrigerant gas is then discharged from the compressor 21 through the air exhaust port 212 of the compressor 21, and then enters the air conditioner for refrigerant circulation.

[0052] The compressor 21 may be a scroll compressor, a rotor compressor, a screw compressor or other types of compressors.

[0053] The first end of the outdoor heat exchanger 22 is connected to the first end of the indoor heat exchanger 11 through a throttling device 24. The throttling device 24 can be a capillary tube, an electronic expansion valve, a thermal expansion valve, or the like.

[0054] The reversing valve 23 is connected to the air intake port 211, the air exhaust port 212, the second end of the indoor heat exchanger 11 and the second end of the outdoor heat exchanger 22, so that the compressor 21, the reversing valve 23, the outdoor heat exchanger 22, the throttling device 24 and the indoor heat exchanger 11 are connected through pipes to form a refrigerant circulation loop.

[0055] The reversing valve 23 is used to switch the flow route of the refrigerant so that the air conditioner can be switched between the heating mode and the cooling mode.

[0056] Specifically, Figure 2 As shown, the reversing valve 23 has a first valve port 231, a second valve port 232, a third valve port 233 and a fourth valve port 234. The first valve port 231 is connected to the exhaust port 212, the third valve port 233 is connected to the suction port 211, the fourth valve port 234 is connected to the second end of the indoor heat exchanger 11, and the second valve port 232 is connected to the second end of the outdoor heat exchanger 22.

[0057] The first valve port 231 can be connected to one of the second valve port 232 and the fourth valve port 234 in a switching manner, and the third valve port 233 can be connected to the other of the second valve port 232 and the fourth valve port 234 in a switching manner. That is, when the first valve port 231 is connected to the second valve port 232, the third valve port 233 is connected to the fourth valve port 234; when the first valve port 231 is connected to the fourth valve port 234, the third valve port 233 is connected to the second valve port 232.

[0058] For example, Figure 3 As shown, when the first valve port 231 is connected to the second valve port 232 and the third valve port 233 is connected to the fourth valve port 234, the outdoor heat exchanger 22 can be used as a condenser and the indoor heat exchanger 11 can be used as an evaporator. At this time, the air conditioner is in cooling mode.

[0059] In the cooling mode of the air conditioner, the refrigerant is compressed by the compressor 21 to form a high-temperature and high-pressure gaseous refrigerant. After the high-temperature and high-pressure gaseous refrigerant flows out of the exhaust port 212 of the compressor 21, it enters the first valve port 231 of the reversing valve 23 and flows out from the second valve port 232 of the reversing valve 23. The refrigerant flowing out of the second valve port 232 of the reversing valve 23 flows to the outdoor heat exchanger 22, and after heat exchange in the outdoor heat exchanger 22, it is condensed into a high-temperature and high-pressure liquid refrigerant, and then flows out of the outdoor heat exchanger 22.

[0060] The refrigerant flowing out of the outdoor heat exchanger 22 flows into the throttling device 24, and forms a low-temperature and low-pressure liquid refrigerant after being throttled and reduced in pressure by the throttling device 24. The low-temperature and low-pressure liquid refrigerant flows out of the throttling device 24 and enters the indoor heat exchanger 11, and forms a low-temperature and low-pressure gaseous refrigerant after heat exchange in the indoor heat exchanger 11.

[0061] After the low-temperature and low-pressure gaseous refrigerant flows out of the indoor heat exchanger 11, it flows through the fourth valve port 234 of the reversing valve 23 and the third valve port 233 of the reversing valve 23 in sequence, and then enters the compressor 21 from the air intake port 211 of the compressor 21 to be compressed again.

[0062] For example, Figure 4 As shown, when the first valve port 231 is connected to the fourth valve port 234 and the third valve port 233 is connected to the second valve port 232, the indoor heat exchanger 11 can be used as a condenser and the outdoor heat exchanger 22 can be used as an evaporator. At this time, the air conditioner is in heating mode.

[0063] In the heating mode of the air conditioner, the refrigerant is compressed by the compressor 21 to form a high-temperature and high-pressure gaseous refrigerant. After the high-temperature and high-pressure gaseous refrigerant flows out of the exhaust port 212 of the compressor 21, it enters the first valve port 231 of the reversing valve 23 and flows out from the fourth valve port 234 of the reversing valve 23. The refrigerant flowing out of the fourth valve port 234 of the reversing valve 23 flows to the indoor heat exchanger 11, and after heat exchange in the indoor heat exchanger 11, it condenses into a high-temperature and high-pressure liquid refrigerant, and then flows out of the indoor heat exchanger 11.

[0064] The refrigerant flowing out of the indoor heat exchanger 11 flows into the throttling device 24, and forms a low-temperature and low-pressure liquid refrigerant after being throttled and reduced in pressure by the throttling device 24. The low-temperature and low-pressure liquid refrigerant flows out of the throttling device 24 and enters the outdoor heat exchanger 22, and forms a low-temperature and low-pressure gaseous refrigerant after heat exchange in the outdoor heat exchanger 22.

[0065] After the low-temperature and low-pressure gaseous refrigerant flows out of the outdoor heat exchanger 22, it flows through the second valve port 232 of the reversing valve 23 and the third valve port 233 of the reversing valve 23 in sequence, and then enters the compressor 21 from the air intake port 211 of the compressor 21 to be compressed again.

[0066] In order to enable the refrigerant to flow in the outdoor heat exchanger 22 so as to facilitate heat exchange in the outdoor heat exchanger 22, Figure 5 As shown, the outdoor heat exchanger 22 includes a shell 221 .

[0067] The outdoor heat exchanger 22 further includes a heat exchange pipeline 222 . The heat exchange pipeline 222 is disposed in the housing 221 , and the refrigerant entering the outdoor heat exchanger 22 can flow in the heat exchange pipeline 222 , thereby performing heat exchange with the outdoor heat exchanger 22 .

[0068] In some embodiments, Figure 6 Specifically, the heat exchange pipe 222 includes a plurality of heat exchange pipes 222A spaced apart along the thickness direction of the outdoor heat exchanger 22, and for any two adjacent heat exchange pipes 222A, the outlet of one heat exchange pipe 222A is connected to the inlet of another heat exchange pipe 222A.

[0069] The heat exchange pipe 222A includes a plurality of refrigerant pipes 222B spaced apart in the vertical direction. For any two adjacent refrigerant pipes 222B, the outlet of one refrigerant pipe 222B is connected to the inlet of the other refrigerant pipe 222B.

[0070] In some embodiments, there may be a plurality of heat exchange pipes 222 , and the plurality of heat exchange pipes 222 are arranged at intervals in the vertical direction. The refrigerant entering the outdoor heat exchanger 22 may flow in the plurality of heat exchange pipes 222 .

[0071] Exemplarily, the heat exchange pipeline 222 includes a first heat exchange pipeline 222C and a second heat exchange pipeline 222D arranged in parallel. The first heat exchange pipeline 222C and the second heat exchange pipeline 222D are arranged in a vertical direction, for example, the first heat exchange pipeline 222C is located above the second heat exchange pipeline 222D.

[0072] In some embodiments, Figure 7 As shown, the air conditioner also includes a refrigerant circulation circuit. The refrigerant circulation circuit allows the compressor, condenser, throttling device, and evaporator to perform a refrigeration cycle in the circuit.

[0073] The refrigerant circulation loop further includes a first refrigerant pipeline 223. The first refrigerant pipeline 223 is used to connect the first heat exchange pipeline 222C and the reversing valve 23, and to connect the second heat exchange pipeline 222D and the reversing valve 23.

[0074] Specifically, the first refrigerant pipeline 223 includes a first connection port 223A, a second connection port 223B and a third connection port 223C which are arranged in sequence. The first connection port 223A of the first refrigerant pipeline 223 is connected to the second valve port 232 of the reversing valve 23 to achieve communication between the first refrigerant pipeline 223 and the reversing valve 23.

[0075] The second connection port 223B is connected to one end of the first heat exchange pipeline 222C to achieve the communication between the first refrigerant pipeline 223 and the first heat exchange pipeline 222C. Exemplarily, the second connection port 223B can be connected to one end of the first heat exchange pipeline 222C through a pipeline. The second connection port 223B can also be directly connected to one end of the first heat exchange pipeline 222C, for example, one end of the first heat exchange pipeline 222C extends out of the shell 221 and is then directly welded at the second connection port 223B.

[0076] The third connection port 223C is connected to one end of the second heat exchange pipeline 222D to achieve the connection between the first refrigerant pipeline 223 and the second heat exchange pipeline 222D. Exemplarily, the third connection port 223C can be connected to one end of the second heat exchange pipeline 222D through a pipeline. The third connection port 223C can also be directly connected to one end of the second heat exchange pipeline 222D, for example, one end of the second heat exchange pipeline 222D extends out of the shell 221 and is then directly welded to the third connection port 223C.

[0077] The first connection port 223A may be a port at one end of the first refrigerant pipeline 223. The second connection port 223B may be an opening provided on the peripheral wall of the first refrigerant pipeline 223. The third connection port 223C may be a port at the other end of the first refrigerant pipeline 223, or may be an opening provided on the peripheral wall of the first refrigerant pipeline 223. When the third connection port 223C is an opening provided on the peripheral wall of the first refrigerant pipeline 223, the port at the other end of the first refrigerant pipeline 223 may be blocked to prevent the refrigerant from flowing out of the port at the other end of the first refrigerant pipeline 223.

[0078] In some embodiments, the outdoor heat exchanger 22 further includes a second refrigerant pipeline 224. The second refrigerant pipeline 224 is used to connect the first heat exchange pipeline 222C and the throttling device 24, and to connect the second heat exchange pipeline 222D and the throttling device 24.

[0079] Specifically, the second refrigerant pipeline 224 includes a first flow port 224A, a second flow port 224B and a third flow port 224C which are arranged in sequence. The first flow port 224A of the second refrigerant pipeline 224 is connected to the throttling device 24 to achieve communication between the second refrigerant pipeline 224 and the throttling device 24.

[0080] The third circulation port 224C is communicated with the other end of the first heat exchange pipeline 222C to realize the communication between the second refrigerant pipeline 224 and the first heat exchange pipeline 222C. Exemplarily, the third circulation port 224C can be communicated with the other end of the second heat exchange pipeline 222D through a pipeline. The third circulation port 224C can also be directly communicated with the other end of the second heat exchange pipeline 222D, for example, the other end of the second heat exchange pipeline 222D extends out of the shell 221, and then is directly welded to the third circulation port 224C.

[0081] The second circulation port 224B is communicated with the other end of the second heat exchange pipeline 222D to achieve communication between the second refrigerant pipeline 224 and the second heat exchange pipeline 222D. Exemplarily, the second circulation port 224B can be communicated with the other end of the second heat exchange pipeline 222D through a pipeline. The second circulation port 224B can also be directly communicated with the other end of the second heat exchange pipeline 222D, for example, the other end of the second heat exchange pipeline 222D extends out of the shell 221, and then is directly welded at the second circulation port 224B.

[0082] The first flow port 224A may be a port at one end of the second refrigerant pipeline 224. The second flow port 224B may be an opening opened on the peripheral wall of the second refrigerant pipeline 224. The third flow port 224C may be a port at the other end of the second refrigerant pipeline 224, or may be an opening opened on the peripheral wall of the second refrigerant pipeline 224. When the third connection port 223C is an opening opened on the peripheral wall of the second refrigerant pipeline 224, the port at the other end of the second refrigerant pipeline 224 may be blocked to prevent the refrigerant from flowing out of the port at the other end of the second refrigerant pipeline 224.

[0083] Through the above arrangement, when the air conditioner is heating, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port 212 of the compressor 21 can flow through the fourth valve port 234 and the first valve port 231 of the reversing valve 23, the indoor heat exchanger 11 and the throttling device 24 in sequence, and become a low-temperature and low-pressure liquid refrigerant. Then, the low-temperature and low-pressure liquid refrigerant enters the second refrigerant pipeline 224 through the first flow port 224A. The refrigerant entering the second refrigerant pipeline 224 can be divided into two paths, one path can enter the first heat exchange pipeline 222C, and the other path can enter the second heat exchange pipeline 222D. Afterwards, the refrigerant flows out from the first heat exchange pipeline 222C and the second heat exchange pipeline 222D, flows through the second valve port 232 and the third valve port 233 of the reversing valve 23 in sequence, and flows back to the compressor 21.

[0084] When the air conditioner is cooling, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port 212 of the compressor 21 can flow through the first valve port 231 and the second valve port 232 of the reversing valve 23 in sequence, and then enter the first refrigerant pipeline 223 through the first connecting port 223A. The refrigerant entering the first refrigerant pipeline 223 can be divided into two paths, one path can enter the first heat exchange pipeline 222C, and the other path can enter the second heat exchange pipeline 222D. After the refrigerant flows out of the first heat exchange pipeline 222C and the second heat exchange pipeline 222D, it flows through the throttling device 24, the indoor heat exchanger 11, the fourth valve port 234 and the third valve port 233 of the reversing valve 23 in sequence, and flows back to the compressor 21.

[0085] In the above process, the refrigerant flows through the same path in the outdoor heat exchanger 22 when the air conditioner is heating and cooling. However, since the heat transfer performance of the refrigerant is different in the high-temperature and high-pressure state and the low-temperature and low-pressure state, if the refrigerant flows through the same path in the outdoor heat exchanger 22 in the heating mode and the cooling mode, it will inevitably lead to poor heat exchange effect of the refrigerant in the outdoor heat exchanger 22 in the heating mode, or poor heat exchange effect of the refrigerant in the outdoor heat exchanger 22 in the cooling mode, so that the outdoor heat exchanger 22 cannot have a high heat exchange efficiency in both the heating mode and the cooling mode.

[0086] Based on this, Figure 8 As shown, a first valve 225 is provided on the first refrigerant pipeline 223. The first valve 225 is located between the second connection port 223B and the third connection port 223C. The first valve 225 is used to control the on-off of a section of the first refrigerant pipeline 223 located between the second connection port 223B and the third connection port 223C, thereby controlling the flow of the refrigerant through the pipeline.

[0087] In some examples, the first valve 225 may be a first solenoid valve, a first electric butterfly valve, a first electric ball valve, or the like.

[0088] When the air conditioner is cooling, the first valve 225 is closed. Fig. 9 As shown, a section of the first refrigerant pipeline 223 between the second connection port 223B and the third connection port 223C is disconnected, and the refrigerant entering the first refrigerant pipeline 223 can only enter the first heat exchange pipeline 222C through the second connection port 223B, and after flowing through the first heat exchange pipeline 222C, it flows out to the second refrigerant pipeline 224 through the third flow port 224C, and will not enter the second heat exchange branch through the third connection port 223C.

[0089] In this way, the refrigerant entering the outdoor heat exchanger 22 cannot flow in all the pipelines (parallel pipelines) in the outdoor heat exchanger 22, thereby reducing the pipelines (parallel pipelines) through which the refrigerant flows in the outdoor heat exchanger 22. At this time, the refrigerant flowing through the outdoor heat exchanger 22 is a high-temperature and high-pressure gaseous refrigerant, which is insensitive to pressure drop, and the heat transfer performance of the refrigerant is mainly affected by the heat transfer coefficient. Therefore, the number of pipelines through which the gaseous refrigerant flows is reduced, which can accelerate the flow rate of the refrigerant in the first heat exchange pipeline 222C to increase the amount of refrigerant flowing through the first heat exchange pipeline 222C, thereby increasing the heat exchange amount of the refrigerant in the outdoor heat exchanger 22, so as to improve the heat exchange efficiency of the outdoor heat exchanger 22.

[0090] When the air conditioner is heating, the first valve 225 is opened. Fig.10As shown, a section of the first refrigerant pipeline 223 located between the second connection port 223B and the third connection port 223C is conducted, and the refrigerant entering the second refrigerant pipeline 224 can enter the first heat exchange pipeline 222C through the third flow port 224C, and after flowing through the first heat exchange pipeline 222C, it flows out to the first refrigerant pipeline 223 through the second connection port 223B. At the same time, the refrigerant entering the second refrigerant pipeline 224 can also enter the second heat exchange pipeline 222D through the second flow port 224B, and after flowing through the second heat exchange pipeline 222D, it flows out to the first refrigerant pipeline 223 through the third connection port 223C.

[0091] In this way, the refrigerant entering the outdoor heat exchanger 22 can flow in all the pipelines (parallel pipelines) in the outdoor heat exchanger 22, so that the refrigerant flows through more pipelines (parallel pipelines) in the outdoor heat exchanger 22. At this time, the refrigerant flowing through the outdoor heat exchanger 22 is a low-temperature and low-pressure liquid refrigerant, and the heat transfer performance of the liquid refrigerant is mainly affected by the heat transfer coefficient and the pressure drop. Therefore, the number of pipelines (parallel pipelines) through which the refrigerant flows is large, which can reduce the pressure loss of the refrigerant when it flows in the outdoor heat exchanger 22, so that the refrigerant flows more slowly in the outdoor heat exchanger 22, so that the refrigerant fully exchanges heat in the outdoor heat exchanger 22, so as to improve the heat exchange efficiency of the outdoor heat exchanger 22.

[0092] In summary, by setting the first valve 225 and opening the first valve 225 when the air conditioner is heating and closing the first valve 225 when the air conditioner is cooling, the outdoor heat exchanger 22 can have a higher heat exchange efficiency when the air conditioner is heating and cooling, thereby making full use of the capacity of the outdoor heat exchanger 22 to improve the energy efficiency of the air conditioner.

[0093] On this basis, in some embodiments, the number of the first heat exchange pipeline 222C can be one or more.

[0094] Among them, Fig.11 As shown, when there are multiple first heat exchange pipelines 222C, there may also be multiple second connection ports 223B. In some examples, multiple second connection ports 223B may correspond to multiple first heat exchange pipelines 222C one by one, and one second connection port 223B is connected to one end of one first heat exchange pipeline 222C. In other examples, one second connection port 223B may be connected to multiple branch pipelines, and one branch pipeline is connected to one end of one first heat exchange pipeline 222C, for example, Fig.11 As shown, the number of the first heat exchange pipelines 222C is six, the number of the second connecting ports 223B is three, one second connecting port 223B is connected to two branch pipelines, and one branch pipeline is connected to one end of one first heat exchange pipeline 222C.

[0095] At this time, the first valve 225 is located between the second connection port 223B and the third connection port 223C adjacent to the third connection port 223C. For example, the first connection port 223A and the third connection port 223C are arranged in sequence from top to bottom, and multiple second connection ports 223B are located between the first connection port 223A and the third connection port 223C, and are arranged in sequence from top to bottom, then the first valve 225 is located between the second connection port 223B and the third connection port 223C at the bottom.

[0096] In this way, when the air conditioner is cooling, after closing the first valve 225, the refrigerant in the first refrigerant pipeline 223 can enter the multiple first heat exchange pipelines 222C through the multiple second connecting ports 223B, and will not enter the second heat exchange pipeline 222D, thereby reducing the number of pipelines through which the refrigerant flows in the outdoor heat exchanger 22, and ensuring the amount of refrigerant flowing through the outdoor heat exchanger 22, so as to ensure the heat exchange efficiency of the outdoor heat exchanger 22.

[0097] In addition, the other ends of the plurality of first heat exchange pipelines 222C are all connected to the third circulation port 224C. In this way, when the air conditioner is cooling, the refrigerant flowing through the plurality of first heat exchange pipelines 222C can flow to the second refrigerant pipeline 224 through the third circulation port 224C. And, when the air conditioner is heating, the refrigerant of the second refrigerant pipeline 224 can enter the plurality of first heat exchange pipelines 222C through the third circulation port 224C, and can enter the second heat exchange pipeline 222D through the second circulation port 224B, so that the refrigerant enters all pipelines of the outdoor heat exchanger 22.

[0098] In some embodiments, Fig.12 As shown, the refrigerant circulation loop also includes a flow divider 226. Fig.13 As shown, the flow divider 226 includes an inlet 226A, a first outlet 226B, and a second outlet 226C. The third flow port 224C is in communication with the inlet 226A to achieve communication between the second refrigerant pipeline 224 and the flow divider 226.

[0099] In some embodiments, a diverter cavity is further formed in the diverter 226 , and the inlet 226A, the first outlet 226B, and the second outlet 226C respectively connect the diverter cavity with the outside of the diverter 226 .

[0100] In some embodiments, Fig.12 As shown, the refrigerant circulation loop also includes a first branch pipe 227. One end of the first branch pipe 227 is connected to the other end of the first heat exchange pipe 222C, and the other end of the first branch pipe 227 is connected to the first outlet 226B, so that the third flow port 224C of the second refrigerant pipe 224 is connected to the other end of the first heat exchanger through the splitter 226 and the first branch pipe 227.

[0101] In some examples, when there are multiple first heat exchange pipes 222C, there are multiple first branch pipes 227, and there are multiple first outlets 226B of the flow divider 226. Multiple first branch pipes 227 correspond to multiple first outlets 226B one by one, and the other end of one first branch pipe 227 is connected to one first outlet 226B.

[0102] One end of a first branch pipe 227 is connected to the other end of at least one first heat exchange pipe 222C. Exemplarily, a plurality of first branch pipes 227 correspond to a plurality of first heat exchange pipes 222C one by one, and one end of a first branch pipe 227 is connected to the other end of a first heat exchange pipe 222C. Exemplarily, one end of a first branch pipe 227 can be connected to a plurality of connecting pipes, and one connecting pipe is connected to the other end of a first heat exchange pipe 222C. For example, the number of first heat exchange pipes 222C is six, the number of first branch pipes 227 is three, one first branch pipe 227 is connected to two connecting pipes, and one connecting pipe is connected to the other end of a first heat exchange pipe 222C.

[0103] In some embodiments, Fig.12 As shown, the refrigerant circulation loop also includes a second branch pipe 228. One end of the second branch pipe 228 is connected to the other end of the second heat exchange pipe 222D, and the other end of the second branch pipe 228 is connected to the second flow port 224B, so that the second flow port 224B of the second refrigerant pipe 224 is connected to the other end of the second heat exchange pipe 222D through the second branch pipe 228.

[0104] In some embodiments, Fig.12 As shown, the refrigerant circulation loop further includes a third branch pipe 229. One end of the third branch pipe 229 is connected to the other end of the first heat exchange pipe 222C, and the other end of the third branch pipe 229 is connected to one end of the second heat exchange pipe 222D.

[0105] In this way, when the air conditioner is cooling, the first valve 225 is closed. At this time, after the refrigerant flowing through the first heat exchange pipeline 222C undergoes heat exchange in the outdoor heat exchanger 22, at least part of the refrigerant can enter the third branch pipeline 229, and enter the second heat exchange pipeline 222D through the third branch pipeline 229 to continue heat exchange in the outdoor heat exchanger 22, so that the refrigerant and the outdoor heat exchanger 22 can have a relatively sufficient heat exchange, so as to further improve the heat exchange efficiency of the outdoor heat exchanger 22.

[0106] In some examples, such as Fig.12As shown, one end of the third branch pipe 229 is connected to the second outlet 226C, and the other end of the third branch pipe 229 is connected to one end of the second heat exchange pipe 222D, so that one end of the third branch pipe 229 is connected to the other end of the first heat exchange pipe 222C through the diverter and the first branch pipe 227.

[0107] In this way, when the air conditioner is cooling, the first valve 225 is closed. At this time, the refrigerant flowing through the first heat exchange pipeline 222C can enter the diverter 226 through the first branch pipeline 227. At least a part of the refrigerant entering the diverter 226 will enter the third branch pipeline 229 through the second outlet 226C of the diverter 226, and then enter the second heat exchange pipeline 222D to continue heat exchange in the outdoor heat exchanger 22.

[0108] In some examples, the other end of the third branch pipe 229 is directly connected to a section of the second heat exchange pipe 222D. Fig.12 As shown, the outdoor heat exchanger 22 further includes a third heat exchange pipeline 22A. The third heat exchange pipeline 22A is disposed in the shell 221. Exemplarily, the third heat exchange pipeline 22A may be located between the first heat exchange pipeline 222C and the second heat exchange pipeline 222D.

[0109] One end of the third heat exchange pipeline 22A is connected to the third connection port 223C. For example, the third interface can be connected to two communication pipelines, one of which is connected to one end of the second heat exchange pipeline 222D, and the other is connected to one end of the third heat exchange pipeline 22A.

[0110] The other end of the third heat exchange pipeline 22A is connected to the other end of the third branch pipeline 229. In this way, the other end of the third branch pipeline 229 is connected to one end of the second heat exchange pipeline 222D through the third heat exchange pipeline 22A and the third connecting port 223C.

[0111] In this way, when the air conditioner is cooling, the first valve 225 is closed. At this time, the refrigerant after heat exchange in the first heat exchange pipeline 222C will first flow through the third heat exchange pipeline 22A and perform heat exchange in the third heat exchange pipeline 22A when entering the second heat exchange pipeline 222D through the third branch pipeline 229, thereby further increasing the path length of the refrigerant flowing in the outdoor heat exchanger 22 and improving the heat exchange effect of the outdoor heat exchanger 22.

[0112] In some embodiments, Fig.12As shown, the refrigerant circulation loop also includes a second valve 22B. The second valve 22B is connected to the second refrigerant pipeline 224 and is located between the second flow port 224B and the third flow port 224C. The second valve 22B is used to control the on-off of a section of the second refrigerant pipeline 224 located between the second flow port 224B and the third flow port 224C, thereby controlling the flow of the refrigerant through the pipeline.

[0113] In some examples, the second valve 22B may be a second solenoid valve, a second electric butterfly valve, a second electric ball valve, or the like.

[0114] When the air conditioner is cooling, the second valve 22B is closed, and at this time, the first valve 225 is also closed. Fig.14 As shown, a section of the first refrigerant pipeline 223 between the second connection port 223B and the third connection port 223C is disconnected, and a section of the second refrigerant pipeline 224 between the second circulation port 224B and the third circulation port 224C is also disconnected. The refrigerant entering the first refrigerant pipeline 223 can only enter the first heat exchange pipeline 222C through the second connection port 223B, and after flowing through the first heat exchange pipeline 222C, enter the splitter 226 through the first branch pipeline 227, and then enter the third branch pipeline 229 from the second outlet 226C of the splitter 226, and then flow through the third heat exchange pipeline 22A and the second heat exchange pipeline 222D in sequence, and flow to the second refrigerant pipeline 224 through the second branch pipeline 228.

[0115] In this way, the number of pipes through which the gaseous refrigerant flows can be reduced to improve the heat exchange efficiency of the outdoor heat exchanger 22, and the refrigerant can be heat exchanged in the first heat exchange pipe 222C, the third heat exchange pipe 22A and the second heat exchange pipe 222D in turn to further improve the heat exchange efficiency of the outdoor heat exchanger 22.

[0116] On this basis, in order to further improve the heat exchange efficiency of the outdoor heat exchanger 22 when the air conditioner is cooling, the inner diameter of the third branch pipe 229 can be made smaller than the inner diameter of the first branch pipe 227. In this way, the flow rate of the refrigerant entering the third branch pipe from the first branch pipe 227 through the diverter 226 will be further increased, so that the flow rate of the refrigerant after entering the third heat exchange pipe 22A and the second heat exchange pipe 222D will increase, thereby increasing the heat exchange efficiency of the refrigerant when flowing in the third heat exchange pipe 22A and the second heat exchange pipe 222D, so as to further improve the heat exchange efficiency of the outdoor heat exchanger 22.

[0117] In some examples, the inner diameter of the first branch pipe 227 is greater than or equal to 4 mm and less than or equal to 6 mm. For example, the inner diameter of the first branch pipe 227 can be 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, etc.

[0118] The inner diameter of the first branch pipe 227 within the above range can ensure the flow rate and flow velocity of the refrigerant in the first branch pipe 227, and can prevent the first branch pipe 227 from being too thick and occupying a large space.

[0119] In some examples, the inner diameter of the third branch pipe 229 is greater than or equal to 3 mm and less than or equal to 5 mm. For example, the inner diameter of the third branch pipe 229 can be 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc.

[0120] The inner diameter of the third branch pipe 229 within the above range can ensure the flow rate and flow velocity of the refrigerant in the third branch pipe 229, and can prevent the third branch pipe 229 from being too thick and occupying a large space.

[0121] When the air conditioner is heating, the second valve 22B is opened, and at this time, the first valve 225 is also opened. Fig.15 As shown, a section of the first refrigerant pipeline 223 between the second connection port 223B and the third connection port 223C is connected, and a section of the second refrigerant pipeline 224 between the second circulation port 224B and the third circulation port 224C is also connected. The refrigerant entering the second refrigerant pipeline 224 is divided into two paths, one of which enters the second heat exchange pipeline 222D through the second branch pipe 228, and then enters the first refrigerant pipeline 223.

[0122] The other path flows through the second valve 22B and enters the diverter 226, and under the diverting action of the diverter 226, enters the first branch pipe 227 and the third branch pipe 229 respectively. The refrigerant entering the first branch pipe 227 enters the first refrigerant pipeline 223 after heat exchange through the first heat exchange pipeline 222C, and the refrigerant entering the third branch pipe 229 enters the first refrigerant pipeline 223 after heat exchange through the third heat exchange pipeline 22A.

[0123] In this way, the refrigerant can flow through all the pipes in the outdoor heat exchanger 22 at the same time to improve the heat exchange efficiency of the outdoor heat exchanger 22.

[0124] On this basis, in order to make the refrigerant entering each of the first heat exchange pipelines 222C, the second heat exchange pipelines 222D and the third heat exchange pipelines 22A relatively uniform when the air conditioner is heating, the first outlet 226B and the second outlet 226C can be located above the inlet 226A. In this way, the refrigerant will gradually enter the diverter cavity from the inlet 226A of the diverter 226, and will be distributed to each of the first branch pipelines 227 and the third branch pipelines 229 after the diverter cavity is filled, so that the flow rate of the refrigerant in each of the first branch pipelines 227 and the third branch pipelines 229 can be relatively uniform, so that the flow rate of the refrigerant in each of the first heat exchange pipelines 222C and the third heat exchange pipelines 22A is relatively uniform, so as to improve the heat exchange efficiency of the outdoor heat exchanger 22.

[0125] In some embodiments, the inner diameter of the second branch pipe 228 can be made smaller than the inner diameter of the first branch pipe 227. In this way, since the refrigerant in the second refrigerant pipe 224 can directly enter the second branch pipe 228 without passing through the diverter 226, and then enter the second heat exchange pipe 222D, the inner diameter of the second branch pipe 228 is made smaller than the inner diameter of the first branch pipe 227, so that the amount of refrigerant entering the second branch pipe 228 can be prevented from being too much, resulting in an imbalance between the amount of refrigerant in the second branch pipe 228 and the amount of refrigerant in the first branch pipe 227, so that the flow rate of the refrigerant in each first heat exchange pipe 222C and the second heat exchange pipe 222D can be made more uniform, so as to improve the heat exchange efficiency of the outdoor heat exchanger 22.

[0126] In some examples, the inner diameter of the second branch pipe 228 is greater than or equal to 3 mm and less than or equal to 5 mm. For example, the inner diameter of the second branch pipe 228 can be 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc.

[0127] In some examples, the inner diameter of the second branch pipe 228 and the inner diameter of the third branch pipe 229 may be equal or unequal.

[0128] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the present application for which protection is claimed, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprise" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in a claim. Certain measures are recorded in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0129] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0130] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air conditioner, comprising: A refrigerant circulation loop, wherein the refrigerant performs a refrigeration cycle in a loop consisting of a compressor, a condenser, a throttling device, and an evaporator, wherein the compressor has an exhaust port and an air intake port, and one of the condenser and the evaporator is an outdoor heat exchanger and the other is an indoor heat exchanger; a reversing valve connected to the refrigerant circulation circuit, the reversing valve having a first valve port connected to the exhaust port, a second valve port connected to the indoor heat exchanger, a third valve port connected to the air intake port, and a fourth valve port connected to the indoor heat exchanger, the first valve port being in reversing communication with one of the second valve port and the fourth valve port, and the third valve port being in reversing communication with the other of the second valve port and the fourth valve port; It is characterized in that The outdoor heat exchanger comprises a first heat exchange pipeline and a second heat exchange pipeline arranged in parallel; The refrigerant circulation loop also includes: The first refrigerant pipeline comprises a first connection port, a second connection port and a third connection port which are sequentially arranged at intervals, the first connection port is connected to the second valve port, the second connection port is connected to one end of the first heat exchange pipeline, and the third connection port is connected to one end of the second heat exchange pipeline; The second refrigerant pipeline comprises a first flow port, a second flow port and a third flow port which are sequentially arranged at intervals, wherein the first flow port is connected to the indoor heat exchanger through a throttling device, the second flow port is connected to the other end of the second heat exchange pipeline, and the third flow port is connected to the other end of the first heat exchange pipeline; Wherein, a first valve is arranged on the first refrigerant pipeline, and the first valve is located between the second connection port and the third connection port; when the air conditioner is heating, the first valve is opened, and when the air conditioner is cooling, the first valve is closed.

2. The air conditioner according to claim 1, characterized in that: The refrigerant circulation loop also includes: A flow splitter, the flow splitter comprising an inlet, a first outlet, and a second outlet, the third flow port being in communication with the inlet; a first branch pipeline, one end of the first branch pipeline being connected to the other end of the first heat exchange pipeline, and the other end of the first branch pipeline being connected to the first outlet; a second branch pipeline, one end of the second branch pipeline being connected to the other end of the second heat exchange pipeline, and the other end of the second branch pipeline being connected to the second flow port; a third branch pipeline, one end of the third branch pipeline being in communication with the second outlet, and the other end of the third branch pipeline being in communication with one end of the second heat exchange pipeline; The second valve is connected to the second refrigerant pipeline and is located between the second flow port and the third flow port; when the air conditioner is heating, the second valve is opened, and when the air conditioner is cooling, the second valve is closed.

3. The air conditioner according to claim 2, characterized in that: The inner diameter of the third branch pipeline is smaller than the inner diameter of the first branch pipeline.

4. The air conditioner according to claim 3, characterized in that: The inner diameter of the first branch pipeline is greater than or equal to 4 mm and less than or equal to 6 mm; And / or, the inner diameter of the third branch pipeline is greater than or equal to 3 mm and less than or equal to 5 mm.

5. The air conditioner according to claim 2, characterized in that: The outdoor heat exchanger also includes: A third heat exchange pipeline, one end of the third heat exchange pipeline is connected to the third connecting port, and the other end of the third heat exchange pipeline is connected to the other end of the third branch pipeline.

6. The air conditioner according to any one of claims 2 to 5, characterized in that: The inner diameter of the second branch pipeline is smaller than the inner diameter of the first branch pipeline.

7. The air conditioner according to claim 6, characterized in that: The inner diameter of the second branch pipeline is greater than or equal to 3 mm and less than or equal to 5 mm.

8. The air conditioner according to any one of claims 2 to 5, characterized in that: The first outlet and the second outlet are both located above the inlet.

9. The air conditioner according to any one of claims 2 to 4, characterized in that: The first valve is a first solenoid valve; and / or the second valve is a second solenoid valve.

10. An air conditioner, comprising: A refrigerant circulation loop, wherein the refrigerant performs a refrigeration cycle in a loop consisting of a compressor, a condenser, a throttling device, and an evaporator, wherein the compressor has an exhaust port and an air intake port, and one of the condenser and the evaporator is an outdoor heat exchanger and the other is an indoor heat exchanger; a reversing valve connected to the refrigerant circulation circuit, the reversing valve having a first valve port connected to the exhaust port, a second valve port connected to the indoor heat exchanger, a third valve port connected to the air intake port, and a fourth valve port connected to the indoor heat exchanger, the first valve port being in reversing communication with one of the second valve port and the fourth valve port, and the third valve port being in reversing communication with the other of the second valve port and the fourth valve port; It is characterized in that The outdoor heat exchanger includes a plurality of first heat exchange pipelines and second heat exchange pipelines arranged in parallel; The refrigerant circulation loop also includes: The first refrigerant pipeline comprises a first connection port, a plurality of second connection ports and a third connection port which are sequentially arranged at intervals, wherein the first connection port is connected to the second valve port, one of the second connection ports is connected to one end of at least one of the first heat exchange pipelines; and the third connection port is connected to one end of the second heat exchange pipeline; The second refrigerant pipeline comprises a first flow port, a second flow port and a third flow port which are sequentially arranged at intervals, wherein the first flow port is connected to the first end of the indoor heat exchanger through a throttling device, the second flow port is connected to the other end of the second heat exchange pipeline, and the third flow port is connected to the other ends of the plurality of first heat exchange pipelines; Wherein, a first valve is arranged on the first refrigerant pipeline, and the first valve is located between the second connection port adjacent to the third connection port and the third connection port; when the air conditioner is heating, the first valve is opened, and when the air conditioner is cooling, the first valve is closed.

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