Heat exchanger assembly and air conditioning system

Abstract

The application provides a heat exchanger assembly and an air conditioning system. The heat exchanger assembly comprises a heat exchanger main body, a first heat exchange pipeline, a second heat exchange pipeline, a third heat exchange pipeline, a first inlet and outlet pipeline, a second inlet and outlet pipeline, a gas distribution pipe assembly and a liquid collecting pipe assembly, a bypass pipeline, a first control valve, a second control valve and a third control valve. The first end of the bypass pipeline is connected with a connecting pipeline between the gas distribution pipe assembly and the first end of the second heat exchange pipeline, and the second end is connected with the second end of the first heat exchange pipeline. The first control valve is arranged on the connecting pipeline between the gas distribution pipe assembly and the first end of the bypass pipeline, the second control valve is arranged on the bypass pipeline, and the third control valve is arranged on the connecting pipeline between the second end of the first heat exchange pipeline and the liquid collecting pipe assembly. The problems that the heat exchange flow path of the air conditioner in the prior art cannot guarantee the highest heat exchange efficiency in refrigeration and heating are solved.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more specifically, to a heat exchanger assembly and an air conditioning system. Background Technology

[0002] As people's living standards improve and air conditioners are used more widely, people are demanding higher and higher energy efficiency from air conditioners, in addition to their cooling and heating functions.

[0003] Therefore, the design of the heat exchange path of an air conditioner needs to fully utilize the heat exchange effect to achieve high heat exchange efficiency in both cooling and heating modes.

[0004] However, in existing air conditioners, the refrigerant demand varies between cooling and heating due to the different refrigerant states within the heat exchange path. This results in the heat exchange path not being able to guarantee the highest heat exchange efficiency during both cooling and heating. Summary of the Invention

[0005] The main objective of this invention is to provide a heat exchanger assembly and an air conditioning system to solve the problem that the heat exchange flow path of the existing air conditioner cannot guarantee the highest heat exchange efficiency during both cooling and heating.

[0006] To achieve the above objectives, according to one aspect of the present invention, a heat exchanger assembly is provided, comprising: a heat exchanger body and a first heat exchange pipe, a second heat exchange pipe, and a third heat exchange pipe spaced apart on the heat exchanger body; a first inlet / outlet pipe and a second inlet / outlet pipe, wherein a first end of the second inlet / outlet pipe is connected to a first end of the first heat exchange pipe; a gas distribution pipe assembly and a liquid collection pipe assembly, wherein the gas distribution pipe assembly is connected to the first ends of the first inlet / outlet pipe, the first ends of the second heat exchange pipe, and the first ends of the third heat exchange pipe; the liquid collection pipe assembly is connected to the second ends of the first heat exchange pipe, the second ends of the second heat exchange pipe, and the second ends of the third heat exchange pipe; and a bypass pipe. The first end of the bypass pipe is connected to the connecting pipe between the gas distribution pipe assembly and the first end of the second heat exchange pipe, and the second end of the bypass pipe is connected to the second end of the first heat exchange pipe; a first control valve, a second control valve, and a third control valve are provided. The first control valve is located on the connecting pipe between the gas distribution pipe assembly and the first end of the bypass pipe, the second control valve is located on the bypass pipe, and the third control valve is located on the connecting pipe between the second end of the first heat exchange pipe and the liquid collection pipe assembly; wherein, when the refrigerant flows into the heat exchanger assembly from the first inlet / outlet pipe or the second inlet / outlet pipe, the flow mode of the refrigerant in the heat exchanger assembly is controlled by the first control valve, the second control valve, and the third control valve.

[0007] Furthermore, the first control valve is a first check valve, the inlet of which is connected to the first end of the bypass pipeline and the first end of the second heat exchange pipeline, and the outlet of which is connected to the gas distribution pipe assembly; the second control valve is a second check valve, the inlet of which is connected to the connecting pipeline between the gas distribution pipe assembly and the first end of the second heat exchange pipeline, and the outlet of which is connected to the second end of the first heat exchange pipeline; the third control valve is a third check valve, the inlet of which is connected to the second end of the first heat exchange pipeline, and the outlet of which is connected to the liquid collection pipe assembly.

[0008] Furthermore, the first control valve is a first switching valve, which controls the opening and closing of the connecting pipeline between the gas distribution pipe assembly and the first end of the bypass pipeline and the first end of the second heat exchange pipeline by opening or closing the first switching valve; the second control valve is a second switching valve, which controls the opening and closing of the bypass pipeline by opening or closing the second switching valve; the third control valve is a third switching valve, which controls the opening and closing of the connecting pipeline between the second end of the first heat exchange pipeline and the liquid collection pipe assembly by opening or closing the third switching valve.

[0009] Furthermore, there are multiple second heat exchange pipelines, which are spaced apart on the heat exchanger body. The heat exchanger assembly includes a first gas distribution pipeline and a first distributor. The first end of the first gas distribution pipeline is connected to the gas distribution pipeline assembly, the second end of the first gas distribution pipeline is connected to the first end of the first distributor, the second end of the first distributor is connected to the first end of each of the multiple second heat exchange pipelines, and the first end of the bypass pipeline is connected to the first gas distribution pipeline.

[0010] Furthermore, there are multiple third heat exchange pipelines, which are spaced apart on the heat exchanger body; the heat exchanger assembly includes a second gas distribution pipeline and a second distributor, the first end of the second gas distribution pipeline is connected to the gas distribution pipeline assembly, the second end of the second gas distribution pipeline is connected to the first end of the second distributor, and the second end of the second distributor is connected to the first end of multiple third heat exchange pipelines.

[0011] Furthermore, the heat exchanger assembly includes a first liquid collection pipe and a third distributor. The first end of the first liquid collection pipe is connected to the liquid collection pipe assembly, the second end of the first liquid collection pipe is connected to the first end of the third distributor, and the second end of the third distributor is connected to both the second end of the first heat exchange pipe and the second end of the bypass pipe.

[0012] Furthermore, the heat exchanger assembly includes a second liquid collection pipe and a third liquid collection pipe. The first end of the second liquid collection pipe is connected to the liquid collection pipe assembly, and the second end of the second liquid collection pipe is connected to the second end of the second heat exchange pipe. The first end of the third liquid collection pipe is connected to the liquid collection pipe assembly, and the second end of the third liquid collection pipe is connected to the second end of the third heat exchange pipe.

[0013] Furthermore, there are multiple second heat exchange pipes, which are spaced apart on the heat exchanger body; there are also multiple second liquid collection pipes, with the second ends of the multiple second liquid collection pipes connected one-to-one with the second ends of the multiple second heat exchange pipes; and / or there are multiple third heat exchange pipes, which are spaced apart on the heat exchanger body; there are also multiple third liquid collection pipes, with the second ends of the multiple third liquid collection pipes connected one-to-one with the second ends of the multiple third heat exchange pipes.

[0014] Furthermore, the first heat exchange pipeline, the second heat exchange pipeline, and the third heat exchange pipeline are arranged sequentially at intervals along a predetermined direction, and each of the first heat exchange pipeline, the second heat exchange pipeline, and the third heat exchange pipeline is composed of multiple heat exchange pipes connected sequentially.

[0015] According to another aspect of the present invention, an air conditioning system is provided, including a compressor, a four-way valve, a heat exchanger assembly, a throttling device, an outdoor unit, and an indoor unit. The compressor, the four-way valve, the heat exchanger assembly, and the throttling device are all located inside the outdoor unit. The compressor is connected to the four-way valve, and the heat exchange flow paths in the four-way valve, the heat exchanger assembly, the throttling device, and the indoor unit are connected end to end in sequence. The heat exchanger assembly is the aforementioned heat exchanger assembly.

[0016] Applying the technical solution of this invention, the heat exchanger assembly of this invention includes: a heat exchanger body and a first heat exchange pipe, a second heat exchange pipe, and a third heat exchange pipe spaced apart on the heat exchanger body; a first inlet / outlet pipe and a second inlet / outlet pipe, the first end of the second inlet / outlet pipe being connected to the first end of the first heat exchange pipe; a gas distribution pipe assembly and a liquid collection pipe assembly, the gas distribution pipe assembly being connected to the first ends of the first inlet / outlet pipe, the first ends of the second heat exchange pipe, and the first ends of the third heat exchange pipe; the liquid collection pipe assembly being connected to the second ends of the first heat exchange pipe, the second ends of the second heat exchange pipe, and the second ends of the third heat exchange pipe; and a bypass pipe, the first end of which is connected to... The gas distribution pipe assembly and the first end of the second heat exchange pipe are connected by a connecting pipe, and the second end of the bypass pipe is connected to the second end of the first heat exchange pipe. A first control valve, a second control valve, and a third control valve are provided. The first control valve is located on the connecting pipe between the gas distribution pipe assembly and the first end of the bypass pipe, the second control valve is located on the bypass pipe, and the third control valve is located on the connecting pipe between the second end of the first heat exchange pipe and the liquid collection pipe assembly. When refrigerant flows into the heat exchanger assembly from the first inlet / outlet pipe or the second inlet / outlet pipe, the flow mode of the refrigerant in the heat exchanger assembly is controlled by the first control valve, the second control valve, and the third control valve. Thus, the heat exchanger assembly of the present invention, by setting a bypass pipe, a first control valve, a second control valve, and a third control valve, can achieve different refrigerant circulation paths during heating and cooling, thereby changing the refrigerant flow rate in the heat exchanger assembly during heating and cooling. This ensures that a better refrigerant circulation path can be formed during both heating and cooling, thereby guaranteeing high heat exchange efficiency in both heating and cooling. This solves the problem that the heat exchange path of existing air conditioners cannot guarantee the highest heat exchange efficiency during both cooling and heating. In addition, the heat exchanger assembly of the present invention is an improvement on the heat exchanger of the outdoor unit of the existing air conditioner. It is compatible with the heat exchanger of the outdoor unit of the existing air conditioner. Only minor modifications are needed to the production equipment of the existing outdoor unit heat exchanger to produce the heat exchanger assembly of the present invention. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of a structure of an embodiment of a heat exchanger assembly according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 The diagram shows the refrigerant flow of the heat exchanger assembly in heating mode.

[0020] Figure 3It shows Figure 1 The diagram shows the refrigerant flow of the heat exchanger assembly in cooling mode.

[0021] Figure 4 A schematic diagram of an embodiment of an air conditioning system according to the present invention is shown;

[0022] Figure 5 It shows Figure 4 The diagram shows the refrigerant flow of the air conditioning system in heating mode.

[0023] Figure 6 It shows Figure 4 The diagram shows the refrigerant flow of the air conditioning system in cooling mode.

[0024] The above figures include the following reference numerals:

[0025] 100. Compressor; 200. Four-way valve; 300. Heat exchanger assembly; 400. Throttling component; 500. Indoor unit; 600. Outdoor unit;

[0026] 1. Heat exchanger body; 10. Heat exchange tubes; 11. First heat exchange pipeline; 12. Second heat exchange pipeline; 13. Third heat exchange pipeline;

[0027] 2. First inlet / outlet pipe; 3. Second inlet / outlet pipe;

[0028] 4. Gas splitter assembly; 41. First gas splitter line; 42. First distributor; 43. Second gas splitter line; 44. Second distributor;

[0029] 5. Liquid collection pipe assembly; 51. First liquid collection pipe; 52. Third distributor; 53. Second liquid collection pipe; 54. Third liquid collection pipe;

[0030] 6. Bypass pipeline; 7. First control valve; 8. Second control valve; 9. Third control valve. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] like Figures 1 to 6As shown, the present invention provides a heat exchanger assembly, comprising: a heat exchanger body 1 and a first heat exchange pipe 11, a second heat exchange pipe 12, and a third heat exchange pipe 13 spaced apart on the heat exchanger body 1; a first inlet / outlet pipe 2 and a second inlet / outlet pipe 3, the first end of the second inlet / outlet pipe 3 being connected to the first end of the first heat exchange pipe 11; a gas distribution pipe assembly 4 and a liquid collection pipe assembly 5, the gas distribution pipe assembly 4 being connected to the first end of the first inlet / outlet pipe 2, the first end of the second heat exchange pipe 12, and the first end of the third heat exchange pipe 13; the liquid collection pipe assembly 5 being connected to the second end of the first heat exchange pipe 11, the second end of the second heat exchange pipe 12, and the second end of the third heat exchange pipe 13; and a bypass pipe 6, the first end of the bypass pipe 6 being connected to the first end of the first inlet / outlet pipe 2, the second end of the second heat exchange pipe 12, and ...3. The first end of the bypass pipe 6 is connected to the first end of the gas distribution pipe assembly 4 and the first end of the second heat exchange pipe 12. The second end of the bypass pipe 6 is connected to the second end of the first heat exchange pipe 11. The system includes a first control valve 7, a second control valve 8, and a third control valve 9. The first control valve 7 is located on the connecting pipe between the gas distribution pipe assembly 4 and the first end of the bypass pipe 6. The second control valve 8 is located on the bypass pipe 6. The third control valve 9 is located on the connecting pipe between the second end of the first heat exchange pipe 11 and the liquid collection pipe assembly 5. When refrigerant flows into the heat exchanger assembly from the first inlet / outlet pipe 2 or the second inlet / outlet pipe 3, the flow mode of the refrigerant in the heat exchanger assembly is controlled by the first control valve 7, the second control valve 8, and the third control valve 9.

[0033] Thus, by incorporating a bypass pipe 6, a first control valve 7, a second control valve 8, and a third control valve 9, the heat exchanger assembly of the present invention can achieve different refrigerant circulation paths during heating and cooling, thereby altering the refrigerant flow rate within the heat exchanger assembly during heating and cooling. This ensures a superior refrigerant circulation path for both heating and cooling, guaranteeing high heat exchange efficiency for the heat exchanger assembly in both modes. This solves the problem that existing air conditioners cannot guarantee the highest heat exchange efficiency during both heating and cooling. Furthermore, the heat exchanger assembly of the present invention is an improvement upon existing outdoor unit heat exchangers in air conditioners, making it compatible with existing outdoor unit heat exchangers. Only minor modifications are needed to the production equipment for existing outdoor unit heat exchangers to manufacture the heat exchanger assembly of the present invention.

[0034] like Figures 1 to 6As shown, the first control valve 7 is a first check valve, the inlet of which is connected to the first end of the bypass pipe 6 and the first end of the second heat exchange pipe 12, and the outlet of which is connected to the gas distribution pipe assembly 4; the second control valve 8 is a second check valve, the inlet of which is connected to the connecting pipe between the first end of the gas distribution pipe assembly 4 and the first end of the second heat exchange pipe 12, and the outlet of which is connected to the second end of the first heat exchange pipe 11; the third control valve 9 is a third check valve, the inlet of which is connected to the second end of the first heat exchange pipe 11, and the outlet of which is connected to the liquid collection pipe assembly 5.

[0035] In addition, the first control valve 7 can also be a first switching valve, which controls the opening and closing of the connecting pipeline between the first end of the bypass pipeline 6 and the first end of the second heat exchange pipeline 12 by opening or closing the first switching valve; the second control valve 8 can also be a second switching valve, which controls the opening and closing of the bypass pipeline 6 by opening or closing the second switching valve; the third control valve 9 can also be a third switching valve, which controls the opening and closing of the connecting pipeline between the second end of the first heat exchange pipeline 11 and the liquid collecting pipeline assembly 5 by opening or closing the third switching valve.

[0036] like Figures 1 to 6 As shown, there are multiple second heat exchange pipes 12, which are spaced apart on the heat exchanger body 1. The heat exchanger assembly includes a first gas distribution pipe 41 and a first distributor 42. The first end of the first gas distribution pipe 41 is connected to the gas distribution pipe assembly 4, and the second end of the first gas distribution pipe 41 is connected to the first end of the first distributor 42. The second end of the first distributor 42 is connected to the first ends of multiple second heat exchange pipes 12. The first end of the bypass pipe 6 is connected to the first gas distribution pipe 41.

[0037] like Figures 1 to 6 As shown, there are multiple third heat exchange pipes 13, which are spaced apart on the heat exchanger body 1. The heat exchanger assembly includes a second gas distribution pipe 43 and a second distributor 44. The first end of the second gas distribution pipe 43 is connected to the gas distribution pipe assembly 4, the second end of the second gas distribution pipe 43 is connected to the first end of the second distributor 44, and the second end of the second distributor 44 is connected to the first end of each of the multiple third heat exchange pipes 13.

[0038] like Figures 1 to 6 As shown, the heat exchanger assembly includes a first liquid collecting pipe 51 and a third distributor 52. The first end of the first liquid collecting pipe 51 is connected to the liquid collecting pipe assembly 5, the second end of the first liquid collecting pipe 51 is connected to the first end of the third distributor 52, and the second end of the third distributor 52 is connected to the second end of the first heat exchange pipe 11 and the second end of the bypass pipe 6.

[0039] like Figures 1 to 6As shown, the heat exchanger assembly includes a second liquid collection pipe 53 and a third liquid collection pipe 54. The first end of the second liquid collection pipe 53 is connected to the liquid collection pipe assembly 5, and the second end of the second liquid collection pipe 53 is connected to the second end of the second heat exchange pipe 12. The first end of the third liquid collection pipe 54 is connected to the liquid collection pipe assembly 5, and the second end of the third liquid collection pipe 54 is connected to the second end of the third heat exchange pipe 13.

[0040] like Figures 1 to 6 As shown, there are multiple second heat exchange pipes 12, which are spaced apart on the heat exchanger body 1; there are also multiple second liquid collection pipes 53, with the second ends of the multiple second liquid collection pipes 53 connected one-to-one with the second ends of the multiple second heat exchange pipes 12; and / or there are multiple third heat exchange pipes 13, which are spaced apart on the heat exchanger body 1; there are also multiple third liquid collection pipes 54, with the second ends of the multiple third liquid collection pipes 54 connected one-to-one with the second ends of the multiple third heat exchange pipes 13.

[0041] like Figures 1 to 6 As shown, the first heat exchange pipeline 11, the second heat exchange pipeline 12 and the third heat exchange pipeline 13 are arranged sequentially at intervals along a predetermined direction. The first heat exchange pipeline 11, the second heat exchange pipeline 12 and the third heat exchange pipeline 13 are all formed by connecting multiple heat exchange pipes 10 in sequence.

[0042] The heat exchanger body 1 of the present invention includes two rows of heat exchange tube assemblies arranged at intervals along a direction perpendicular to a predetermined direction, and a plurality of heat exchange tubes 10 arranged at intervals along the predetermined direction in each row of heat exchange tube assemblies.

[0043] In this way, when the heat exchanger assembly 300 is cooling, it can reduce the amount of liquid refrigerant participating in heat exchange in the later stage of heat exchange, and when the heat exchanger assembly 300 is heating, it can reduce the amount of gaseous refrigerant participating in heat exchange in the later stage of heat exchange, thereby making the refrigerant content in the heat exchanger assembly 300 different when it achieves heating and cooling, thus improving the heat exchange effect of the heat exchanger assembly 300.

[0044] like Figures 4 to 6 As shown, the present invention also provides an air conditioning system, including a compressor 100, a four-way valve 200, a heat exchanger assembly 300, a throttling device 400, an outdoor unit 600, and an indoor unit 500. The compressor 100, the four-way valve 200, the heat exchanger assembly 300, and the throttling device 400 are all located inside the outdoor unit 600. The compressor 100 is connected to the four-way valve 200. The heat exchange flow paths in the four-way valve 200, the heat exchanger assembly 300, the throttling device 400, and the indoor unit 500 are connected end to end in sequence. The heat exchanger assembly 300 is the aforementioned heat exchanger assembly.

[0045] (1) When the air conditioning system is in heating mode

[0046] like Figure 2 and Figure 5 As shown, the outdoor heat exchanger (i.e., the heat exchanger assembly 300 of this invention) operates as an evaporator. The two-phase refrigerant (with a dryness fraction of approximately 0.2) flowing out from the compressor 100, through the four-way valve 200, the heat exchange path in the indoor unit 500, and the throttling device 400, first enters the first heat exchange pipeline 11 via the second inlet / outlet pipeline 3 for heat exchange. During this process, the heat transfer coefficient of the refrigerant increases with the increase in dryness fraction. After reaching a certain level, the heat transfer coefficient of the refrigerant will rapidly decrease again. The speed of heat exchange decreases, meaning that efficient heat exchange occurs in the first heat exchange pipe 11. Afterward, the liquid refrigerant and a portion of the gaseous refrigerant are divided into four paths through the liquid collection pipe assembly 5 and enter the two second heat exchange pipes 12 and the two third heat exchange pipes 13 respectively. Finally, they return to the compressor 100 through the gas distribution pipe assembly 4, the first inlet and outlet pipes 2, and the four-way valve 200, and then enter the compressor 100 for circulation. The other portion of the gaseous refrigerant is stored in the connecting pipe between the second control valve 8 and the third distributor 52.

[0047] During the evaporation process, excessive gaseous refrigerant can lead to a deterioration in evaporative heat transfer. Therefore, it is necessary to store a portion of the gaseous refrigerant to reduce its dryness, so that the subsequent four refrigerants can also perform efficient heat exchange in the two second heat exchange pipes 12 and the two third heat exchange pipes 13.

[0048] In addition, the amount of gaseous refrigerant will increase during the subsequent heat exchange process. Since the gaseous refrigerant has a high flow rate and high resistance, dividing it into four paths can reduce the resistance of the gaseous refrigerant and further improve the heat exchange efficiency. Furthermore, since the evaporator is very sensitive to pressure drop, the number of heat exchange pipelines such as the second heat exchange pipeline 12 and the third heat exchange pipeline 13 should be as large as possible.

[0049] (2) When the air conditioning system is in cooling mode

[0050] like Figure 3 and Figure 6As shown, the outdoor heat exchanger (i.e., the heat exchanger assembly 300 of this invention) operates as a condenser. Gaseous refrigerant from the compressor 100 passes through the four-way valve 200, the heat exchange path in the indoor unit 500, and the throttling device 400, before entering the heat exchanger assembly through the first inlet / outlet pipe 2. It first passes through the gas distribution pipe assembly 4, then through the second distributor 44 (such as a Y-type three-way distributor) which splits it into two paths, each entering one of the two third heat exchange pipes 13 for condensation heat exchange. The two-phase refrigerant after heat exchange enters the liquid collection pipe assembly 5. Due to the obstruction of the first control valve 7, the refrigerant in the gas distribution pipe assembly 4 is not... The refrigerant enters the two second heat exchange pipes 12 through the first distributor 42; a portion of the liquid refrigerant in the refrigerant entering the liquid collection pipe assembly 5 will accumulate in the connecting pipe between the third distributor 52 and the third control valve 9 and will not participate in the circulation. The remaining refrigerant in the refrigerant entering the liquid collection pipe assembly 5 will enter the two second heat exchange pipes 12, then accumulate through the first distributor 42, and then enter the first heat exchange pipe 11 through the second control valve 8 for heat exchange. Finally, it returns to the compressor 100 through the second inlet and outlet pipes 3, the throttling component 400, the heat exchange path in the indoor unit 500, and the four-way valve 200.

[0051] Because excessive liquid refrigerant during condensation can form a liquid film in the heat exchange pipes, increasing thermal resistance and affecting heat transfer efficiency, a portion of the liquid refrigerant needs to accumulate between the third distributor 52 and the third control valve 9. The amount of liquid refrigerant in the same space is greater than the amount of gaseous refrigerant; therefore, the amount of refrigerant used in the cooling process is less than that used in the heating process. This achieves the goal of different refrigerant requirements for heating and cooling.

[0052] In addition, the gaseous refrigerant coming out of compressor 100 has a large resistance, pressure drop and flow rate. If it is divided into four paths, the total length of the heat exchange pipeline is shorter. Although the resistance is reduced, the flow rate is also reduced. Since the condenser is less sensitive to pressure drop, the heat exchange is greater when there are fewer flow paths. The heat exchange that can be achieved by first going through two third heat exchange pipelines 13 and then two second heat exchange pipelines 12 is greater and the heat exchange effect is better.

[0053] The heat exchanger assembly 300 of the present invention includes at least the following embodiments:

[0054] Example 1

[0055] The heat exchanger assembly of this embodiment includes: a heat exchanger body 1 and a first heat exchange pipe 11, a second heat exchange pipe 12, and a third heat exchange pipe 13 spaced apart on the heat exchanger body 1; a first inlet / outlet pipe 2 and a second inlet / outlet pipe 3, the first end of the second inlet / outlet pipe 3 being connected to the first end of the first heat exchange pipe 11; a gas distribution pipe assembly 4 and a liquid collection pipe assembly 5, the gas distribution pipe assembly 4 being connected to the first end of the first inlet / outlet pipe 2, the first end of the second heat exchange pipe 12, and the first end of the third heat exchange pipe 13; the liquid collection pipe assembly 5 being connected to the second end of the first heat exchange pipe 11, the second end of the second heat exchange pipe 12, and the second end of the third heat exchange pipe 13; and a bypass pipe 6, the first end of which is connected to the gas distribution pipe 11. The gas pipe assembly 4 is connected to the first end of the second heat exchange pipe 12 via a connecting pipe, and the second end of the bypass pipe 6 is connected to the second end of the first heat exchange pipe 11. A first control valve 7, a second control valve 8, and a third control valve 9 are provided. The first control valve 7 is located on the connecting pipe between the gas pipe assembly 4 and the first end of the bypass pipe 6, the second control valve 8 is located on the bypass pipe 6, and the third control valve 9 is located on the connecting pipe between the second end of the first heat exchange pipe 11 and the liquid collection pipe assembly 5. When refrigerant flows into the heat exchanger assembly from the first inlet / outlet pipe 2 or the second inlet / outlet pipe 3, the flow pattern of the refrigerant in the heat exchanger assembly is controlled by the first control valve 7, the second control valve 8, and the third control valve 9.

[0056] In the heat exchanger assembly of this embodiment, the first control valve 7 is a first check valve. The inlet of the first check valve is connected to the first end of the bypass pipe 6 and the first end of the second heat exchange pipe 12, and the outlet of the first check valve is connected to the gas distribution pipe assembly 4. The second control valve 8 is a second check valve. The inlet of the second check valve is connected to the connecting pipe between the first end of the gas distribution pipe assembly 4 and the first end of the second heat exchange pipe 12, and the outlet of the second check valve is connected to the second end of the first heat exchange pipe 11. The third control valve 9 is a third check valve. The inlet of the third check valve is connected to the second end of the first heat exchange pipe 11, and the outlet of the third check valve is connected to the liquid collection pipe assembly 5.

[0057] In the heat exchanger assembly of this embodiment, there is one second heat exchange pipeline 12. The heat exchanger assembly includes a first gas distribution pipeline 41. The first end of the first gas distribution pipeline 41 is connected to the gas distribution pipeline assembly 4. The second end of the first gas distribution pipeline 41 is connected to the first end of the second heat exchange pipeline 12. The first end of the bypass pipeline 6 is connected to the first gas distribution pipeline 41.

[0058] In the heat exchanger assembly of this embodiment, there is one third heat exchange pipeline 13. The heat exchanger assembly includes a second gas distribution pipeline 43. The first end of the second gas distribution pipeline 43 is connected to the gas distribution pipeline assembly 4, and the second end of the second gas distribution pipeline 43 is connected to the first end of the third heat exchange pipeline 13.

[0059] In the heat exchanger assembly of this embodiment, the heat exchanger assembly includes a first liquid collecting pipe 51 and a third distributor 52. The first end of the first liquid collecting pipe 51 is connected to the liquid collecting pipe assembly 5, the second end of the first liquid collecting pipe 51 is connected to the first end of the third distributor 52, and the second end of the third distributor 52 is connected to the second end of both the first heat exchange pipe 11 and the second end of the bypass pipe 6.

[0060] In the heat exchanger assembly of this embodiment, the heat exchanger assembly includes a second liquid collecting pipe 53 and a third liquid collecting pipe 54. The first end of the second liquid collecting pipe 53 is connected to the liquid collecting pipe assembly 5, and the second end of the second liquid collecting pipe 53 is connected to the second end of the second heat exchange pipe 12. The first end of the third liquid collecting pipe 54 is connected to the liquid collecting pipe assembly 5, and the second end of the third liquid collecting pipe 54 is connected to the second end of the third heat exchange pipe 13.

[0061] In the heat exchanger assembly of this embodiment, the first heat exchange pipe 11, the second heat exchange pipe 12 and the third heat exchange pipe 13 are arranged sequentially at intervals along a predetermined direction, and the first heat exchange pipe 11, the second heat exchange pipe 12 and the third heat exchange pipe 13 are all formed by connecting multiple heat exchange pipes 10 in sequence.

[0062] Example 2

[0063] The heat exchanger assembly of this embodiment 2 includes: a heat exchanger body 1 and a first heat exchange pipe 11, a second heat exchange pipe 12, and a third heat exchange pipe 13 spaced apart on the heat exchanger body 1; a first inlet / outlet pipe 2 and a second inlet / outlet pipe 3, the first end of the second inlet / outlet pipe 3 being connected to the first end of the first heat exchange pipe 11; a gas distribution pipe assembly 4 and a liquid collection pipe assembly 5, the gas distribution pipe assembly 4 being connected to the first end of the first inlet / outlet pipe 2, the first end of the second heat exchange pipe 12, and the first end of the third heat exchange pipe 13; the liquid collection pipe assembly 5 being connected to the second end of the first heat exchange pipe 11, the second end of the second heat exchange pipe 12, and the second end of the third heat exchange pipe 13; and a bypass pipe 6, the first end of which is connected to the gas distribution pipe 11. The gas pipe assembly 4 is connected to the first end of the second heat exchange pipe 12 via a connecting pipe, and the second end of the bypass pipe 6 is connected to the second end of the first heat exchange pipe 11. A first control valve 7, a second control valve 8, and a third control valve 9 are provided. The first control valve 7 is located on the connecting pipe between the gas pipe assembly 4 and the first end of the bypass pipe 6, the second control valve 8 is located on the bypass pipe 6, and the third control valve 9 is located on the connecting pipe between the second end of the first heat exchange pipe 11 and the liquid collection pipe assembly 5. When refrigerant flows into the heat exchanger assembly from the first inlet / outlet pipe 2 or the second inlet / outlet pipe 3, the flow pattern of the refrigerant in the heat exchanger assembly is controlled by the first control valve 7, the second control valve 8, and the third control valve 9.

[0064] In the heat exchanger assembly of this embodiment 2, the first control valve 7 is a first check valve. The inlet of the first check valve is connected to the first end of the bypass pipe 6 and the first end of the second heat exchange pipe 12, and the outlet of the first check valve is connected to the gas distribution pipe assembly 4. The second control valve 8 is a second check valve. The inlet of the second check valve is connected to the connecting pipe between the first end of the gas distribution pipe assembly 4 and the first end of the second heat exchange pipe 12, and the outlet of the second check valve is connected to the second end of the first heat exchange pipe 11. The third control valve 9 is a third check valve. The inlet of the third check valve is connected to the second end of the first heat exchange pipe 11, and the outlet of the third check valve is connected to the liquid collection pipe assembly 5.

[0065] In the heat exchanger assembly of this embodiment 2, there are two second heat exchange pipes 12, which are spaced apart on the heat exchanger body 1. The heat exchanger assembly includes a first gas distribution pipe 41 and a first distributor 42. The first end of the first gas distribution pipe 41 is connected to the gas distribution pipe assembly 4, and the second end of the first gas distribution pipe 41 is connected to the first end of the first distributor 42. The second end of the first distributor 42 is connected to the first ends of both second heat exchange pipes 12. The first end of the bypass pipe 6 is connected to the first gas distribution pipe 41.

[0066] In the heat exchanger assembly of this embodiment 2, there are two third heat exchange pipes 13, which are spaced apart on the heat exchanger body 1. The heat exchanger assembly includes a second gas distribution pipe 43 and a second flow divider 44. The first end of the second gas distribution pipe 43 is connected to the gas distribution pipe assembly 4, the second end of the second gas distribution pipe 43 is connected to the first end of the second flow divider 44, and the second end of the second flow divider 44 is connected to the first ends of both third heat exchange pipes 13.

[0067] In the heat exchanger assembly of this embodiment 2, the heat exchanger assembly includes a first liquid collecting pipe 51 and a third distributor 52. The first end of the first liquid collecting pipe 51 is connected to the liquid collecting pipe assembly 5, the second end of the first liquid collecting pipe 51 is connected to the first end of the third distributor 52, and the second end of the third distributor 52 is connected to the second end of both the first heat exchange pipe 11 and the second end of the bypass pipe 6.

[0068] In the heat exchanger assembly of this embodiment 2, the heat exchanger assembly includes a second liquid collecting pipe 53 and a third liquid collecting pipe 54. The first end of the second liquid collecting pipe 53 is connected to the liquid collecting pipe assembly 5, and the second end of the second liquid collecting pipe 53 is connected to the second end of the second heat exchange pipe 12. The first end of the third liquid collecting pipe 54 is connected to the liquid collecting pipe assembly 5, and the second end of the third liquid collecting pipe 54 is connected to the second end of the third heat exchange pipe 13.

[0069] In the heat exchanger assembly of this embodiment 2, there are also two second liquid collection pipes 53, and the second ends of the two second liquid collection pipes 53 are connected to the second ends of the two second heat exchange pipes 12 in a one-to-one correspondence; there are also two third heat exchange pipes 13, and the two third heat exchange pipes 13 are spaced apart on the heat exchanger body 1; there are also two third liquid collection pipes 54, and the second ends of the two third liquid collection pipes 54 are connected to the second ends of the two third heat exchange pipes 13 in a one-to-one correspondence.

[0070] In the heat exchanger assembly of this second embodiment, the first heat exchange pipe 11, the second heat exchange pipe 12 and the third heat exchange pipe 13 are arranged sequentially at intervals along a predetermined direction, and each of the first heat exchange pipe 11, the second heat exchange pipe 12 and the third heat exchange pipe 13 is formed by connecting multiple heat exchange pipes 10 in sequence.

[0071] Example 3

[0072] The heat exchanger assembly of this embodiment includes: a heat exchanger body 1 and a first heat exchange pipe 11, a second heat exchange pipe 12, and a third heat exchange pipe 13 spaced apart on the heat exchanger body 1; a first inlet / outlet pipe 2 and a second inlet / outlet pipe 3, the first end of the second inlet / outlet pipe 3 being connected to the first end of the first heat exchange pipe 11; a gas distribution pipe assembly 4 and a liquid collection pipe assembly 5, the gas distribution pipe assembly 4 being connected to the first end of the first inlet / outlet pipe 2, the first end of the second heat exchange pipe 12, and the first end of the third heat exchange pipe 13; the liquid collection pipe assembly 5 being connected to the second end of the first heat exchange pipe 11, the second end of the second heat exchange pipe 12, and the second end of the third heat exchange pipe 13; and a bypass pipe 6, the first end of which is connected to the gas distribution pipe 11. The gas pipe assembly 4 is connected to the first end of the second heat exchange pipe 12 via a connecting pipe, and the second end of the bypass pipe 6 is connected to the second end of the first heat exchange pipe 11. A first control valve 7, a second control valve 8, and a third control valve 9 are provided. The first control valve 7 is located on the connecting pipe between the gas pipe assembly 4 and the first end of the bypass pipe 6, the second control valve 8 is located on the bypass pipe 6, and the third control valve 9 is located on the connecting pipe between the second end of the first heat exchange pipe 11 and the liquid collection pipe assembly 5. When refrigerant flows into the heat exchanger assembly from the first inlet / outlet pipe 2 or the second inlet / outlet pipe 3, the flow pattern of the refrigerant in the heat exchanger assembly is controlled by the first control valve 7, the second control valve 8, and the third control valve 9.

[0073] In the heat exchanger assembly of this embodiment, the first control valve 7 can also be a first switching valve, which controls the opening and closing of the connecting pipeline between the first end of the bypass pipeline 6 and the first end of the second heat exchange pipeline 12 by opening or closing the first switching valve; the second control valve 8 can also be a second switching valve, which controls the opening and closing of the bypass pipeline 6 by opening or closing the second switching valve; the third control valve 9 can also be a third switching valve, which controls the opening and closing of the connecting pipeline between the second end of the first heat exchange pipeline 11 and the liquid collecting pipeline assembly 5 by opening or closing the third switching valve.

[0074] In the heat exchanger assembly of this embodiment, there is one second heat exchange pipeline 12. The heat exchanger assembly includes a first gas distribution pipeline 41. The first end of the first gas distribution pipeline 41 is connected to the gas distribution pipeline assembly 4. The second end of the first gas distribution pipeline 41 is connected to the first end of the second heat exchange pipeline 12. The first end of the bypass pipeline 6 is connected to the first gas distribution pipeline 41.

[0075] In the heat exchanger assembly of this embodiment, there is one third heat exchange pipeline 13. The heat exchanger assembly includes a second gas distribution pipeline 43. The first end of the second gas distribution pipeline 43 is connected to the gas distribution pipeline assembly 4, and the second end of the second gas distribution pipeline 43 is connected to the first end of the third heat exchange pipeline 13.

[0076] In the heat exchanger assembly of this embodiment, the heat exchanger assembly includes a first liquid collecting pipe 51 and a third distributor 52. The first end of the first liquid collecting pipe 51 is connected to the liquid collecting pipe assembly 5, the second end of the first liquid collecting pipe 51 is connected to the first end of the third distributor 52, and the second end of the third distributor 52 is connected to the second end of both the first heat exchange pipe 11 and the second end of the bypass pipe 6.

[0077] In the heat exchanger assembly of this embodiment, the heat exchanger assembly includes a second liquid collecting pipe 53 and a third liquid collecting pipe 54. The first end of the second liquid collecting pipe 53 is connected to the liquid collecting pipe assembly 5, and the second end of the second liquid collecting pipe 53 is connected to the second end of the second heat exchange pipe 12. The first end of the third liquid collecting pipe 54 is connected to the liquid collecting pipe assembly 5, and the second end of the third liquid collecting pipe 54 is connected to the second end of the third heat exchange pipe 13.

[0078] In the heat exchanger assembly of this embodiment, the first heat exchange pipe 11, the second heat exchange pipe 12 and the third heat exchange pipe 13 are arranged sequentially at intervals along a predetermined direction, and the first heat exchange pipe 11, the second heat exchange pipe 12 and the third heat exchange pipe 13 are all formed by connecting multiple heat exchange pipes 10 in sequence.

[0079] Example 4

[0080] The heat exchanger assembly of this embodiment four includes: a heat exchanger body 1 and a first heat exchange pipe 11, a second heat exchange pipe 12, and a third heat exchange pipe 13 spaced apart on the heat exchanger body 1; a first inlet / outlet pipe 2 and a second inlet / outlet pipe 3, the first end of the second inlet / outlet pipe 3 being connected to the first end of the first heat exchange pipe 11; a gas distribution pipe assembly 4 and a liquid collection pipe assembly 5, the gas distribution pipe assembly 4 being connected to the first end of the first inlet / outlet pipe 2, the first end of the second heat exchange pipe 12, and the first end of the third heat exchange pipe 13; the liquid collection pipe assembly 5 being connected to the second end of the first heat exchange pipe 11, the second end of the second heat exchange pipe 12, and the second end of the third heat exchange pipe 13; and a bypass pipe 6, the first end of which is connected to the gas distribution pipe 11. The gas pipe assembly 4 is connected to the first end of the second heat exchange pipe 12 via a connecting pipe, and the second end of the bypass pipe 6 is connected to the second end of the first heat exchange pipe 11. A first control valve 7, a second control valve 8, and a third control valve 9 are provided. The first control valve 7 is located on the connecting pipe between the gas pipe assembly 4 and the first end of the bypass pipe 6, the second control valve 8 is located on the bypass pipe 6, and the third control valve 9 is located on the connecting pipe between the second end of the first heat exchange pipe 11 and the liquid collection pipe assembly 5. When refrigerant flows into the heat exchanger assembly from the first inlet / outlet pipe 2 or the second inlet / outlet pipe 3, the flow pattern of the refrigerant in the heat exchanger assembly is controlled by the first control valve 7, the second control valve 8, and the third control valve 9.

[0081] In the heat exchanger assembly of this embodiment four, the first control valve 7 can also be a first switching valve, which controls the opening and closing of the connecting pipeline between the first end of the bypass pipeline 6 and the first end of the second heat exchange pipeline 12 by opening or closing the first switching valve; the second control valve 8 can also be a second switching valve, which controls the opening and closing of the bypass pipeline 6 by opening or closing the second switching valve; the third control valve 9 can also be a third switching valve, which controls the opening and closing of the connecting pipeline between the second end of the first heat exchange pipeline 11 and the liquid collecting pipeline assembly 5 by opening or closing the third switching valve.

[0082] In the heat exchanger assembly of this embodiment four, there are two second heat exchange pipes 12, which are spaced apart on the heat exchanger body 1. The heat exchanger assembly includes a first gas distribution pipe 41 and a first distributor 42. The first end of the first gas distribution pipe 41 is connected to the gas distribution pipe assembly 4, and the second end of the first gas distribution pipe 41 is connected to the first end of the first distributor 42. The second end of the first distributor 42 is connected to the first ends of both second heat exchange pipes 12. The first end of the bypass pipe 6 is connected to the first gas distribution pipe 41.

[0083] In the heat exchanger assembly of this embodiment four, there are two third heat exchange pipes 13, which are spaced apart on the heat exchanger body 1. The heat exchanger assembly includes a second gas distribution pipe 43 and a second distributor 44. The first end of the second gas distribution pipe 43 is connected to the gas distribution pipe assembly 4, the second end of the second gas distribution pipe 43 is connected to the first end of the second distributor 44, and the second end of the second distributor 44 is connected to the first ends of both third heat exchange pipes 13.

[0084] In the heat exchanger assembly of this embodiment four, the heat exchanger assembly includes a first liquid collecting pipe 51 and a third distributor 52. The first end of the first liquid collecting pipe 51 is connected to the liquid collecting pipe assembly 5, the second end of the first liquid collecting pipe 51 is connected to the first end of the third distributor 52, and the second end of the third distributor 52 is connected to the second end of both the first heat exchange pipe 11 and the second end of the bypass pipe 6.

[0085] In the heat exchanger assembly of this embodiment four, the heat exchanger assembly includes a second liquid collecting pipe 53 and a third liquid collecting pipe 54. The first end of the second liquid collecting pipe 53 is connected to the liquid collecting pipe assembly 5, and the second end of the second liquid collecting pipe 53 is connected to the second end of the second heat exchange pipe 12. The first end of the third liquid collecting pipe 54 is connected to the liquid collecting pipe assembly 5, and the second end of the third liquid collecting pipe 54 is connected to the second end of the third heat exchange pipe 13.

[0086] In the heat exchanger assembly of this embodiment four, there are also two second liquid collection pipes 53, and the second ends of the two second liquid collection pipes 53 are connected to the second ends of the two second heat exchange pipes 12 in a one-to-one correspondence; there are also two third heat exchange pipes 13, and the two third heat exchange pipes 13 are spaced apart on the heat exchanger body 1; there are also two third liquid collection pipes 54, and the second ends of the two third liquid collection pipes 54 are connected to the second ends of the two third heat exchange pipes 13 in a one-to-one correspondence.

[0087] In the heat exchanger assembly of this embodiment four, the first heat exchange pipe 11, the second heat exchange pipe 12 and the third heat exchange pipe 13 are arranged sequentially at intervals along a predetermined direction, and the first heat exchange pipe 11, the second heat exchange pipe 12 and the third heat exchange pipe 13 are all formed by connecting multiple heat exchange pipes 10 in sequence.

[0088] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0089] The heat exchanger assembly of the present invention includes: a heat exchanger body 1 and a first heat exchange pipe 11, a second heat exchange pipe 12, and a third heat exchange pipe 13 spaced apart on the heat exchanger body 1; a first inlet / outlet pipe 2 and a second inlet / outlet pipe 3, the first end of the second inlet / outlet pipe 3 being connected to the first end of the first heat exchange pipe 11; a gas distribution pipe assembly 4 and a liquid collection pipe assembly 5, the gas distribution pipe assembly 4 being connected to the first end of the first inlet / outlet pipe 2, the first end of the second heat exchange pipe 12, and the first end of the third heat exchange pipe 13; the liquid collection pipe assembly 5 being connected to the second end of the first heat exchange pipe 11, the second end of the second heat exchange pipe 12, and the second end of the third heat exchange pipe 13; and a bypass pipe 6, the first end of which is connected to the gas distribution pipe 13. The connecting pipe between the first end of the pipe assembly 4 and the first end of the second heat exchange pipe 12 is connected, and the second end of the bypass pipe 6 is connected to the second end of the first heat exchange pipe 11; a first control valve 7, a second control valve 8, and a third control valve 9 are provided. The first control valve 7 is provided on the connecting pipe between the gas distribution pipe assembly 4 and the first end of the bypass pipe 6, the second control valve 8 is provided on the bypass pipe 6, and the third control valve 9 is provided on the connecting pipe between the second end of the first heat exchange pipe 11 and the liquid collection pipe assembly 5; wherein, when the refrigerant flows into the heat exchanger assembly from the first inlet / outlet pipe 2 or the second inlet / outlet pipe 3, the flow mode of the refrigerant in the heat exchanger assembly is controlled by the first control valve 7, the second control valve 8, and the third control valve 9. Thus, by incorporating a bypass pipe 6, a first control valve 7, a second control valve 8, and a third control valve 9, the heat exchanger assembly of the present invention can achieve different refrigerant circulation paths during heating and cooling, thereby altering the refrigerant flow rate within the heat exchanger assembly during heating and cooling. This ensures a superior refrigerant circulation path for both heating and cooling, guaranteeing high heat exchange efficiency for the heat exchanger assembly in both modes. This solves the problem that existing air conditioners cannot guarantee the highest heat exchange efficiency during both heating and cooling. Furthermore, the heat exchanger assembly of the present invention is an improvement upon existing outdoor unit heat exchangers in air conditioners, making it compatible with existing outdoor unit heat exchangers. Only minor modifications are needed to the production equipment for existing outdoor unit heat exchangers to manufacture the heat exchanger assembly of the present invention.

[0090] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0091] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0092] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0093] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0094] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0095] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A heat exchanger assembly, characterized in that, include: The heat exchanger body (1) and the first heat exchange pipe (11), the second heat exchange pipe (12) and the third heat exchange pipe (13) spaced apart on the heat exchanger body (1); The first inlet / outlet pipe (2) and the second inlet / outlet pipe (3) are connected at the first end of the second inlet / outlet pipe (3) to the first end of the first heat exchange pipe (11). The gas distribution pipe assembly (4) and the liquid collection pipe assembly (5) are connected to the first end of the first inlet / outlet pipe (2), the first end of the second heat exchange pipe (12), and the first end of the third heat exchange pipe (13); the liquid collection pipe assembly (5) is connected to the second end of the first heat exchange pipe (11), the second end of the second heat exchange pipe (12), and the second end of the third heat exchange pipe (13). A bypass pipe (6) is provided, the first end of which is connected to the connecting pipe between the gas distribution pipe assembly (4) and the first end of the second heat exchange pipe (12), and the second end of the bypass pipe (6) is connected to the second end of the first heat exchange pipe (11). The system comprises a first control valve (7), a second control valve (8), and a third control valve (9). The first control valve (7) is located on the connecting pipe between the gas distribution pipe assembly (4) and the first end of the bypass pipe (6). The second control valve (8) is located on the bypass pipe (6). The third control valve (9) is located on the connecting pipe between the second end of the first heat exchange pipe (11) and the liquid collection pipe assembly (5). When refrigerant flows into the heat exchanger assembly from the first inlet / outlet pipe (2) or the second inlet / outlet pipe (3), the flow mode of the refrigerant in the heat exchanger assembly is controlled by the first control valve (7), the second control valve (8) and the third control valve (9).

2. The heat exchanger assembly according to claim 1, characterized in that, The first control valve (7) is a first check valve. The inlet of the first check valve is connected to the first end of the bypass pipeline (6) and the first end of the second heat exchange pipeline (12). The outlet of the first check valve is connected to the gas distribution pipe assembly (4). The second control valve (8) is a second check valve. The inlet of the second check valve is connected to the connecting pipe between the gas distribution pipe assembly (4) and the first end of the second heat exchange pipe (12). The outlet of the second check valve is connected to the second end of the first heat exchange pipe (11). The third control valve (9) is a third check valve. The inlet of the third check valve is connected to the second end of the first heat exchange pipeline (11), and the outlet of the third check valve is connected to the liquid collection pipe assembly (5).

3. The heat exchanger assembly according to claim 1, characterized in that, The first control valve (7) is a first switching valve, which controls the opening and closing of the connecting pipeline between the gas distribution pipe assembly (4) and the first end of the bypass pipeline (6) and the first end of the second heat exchange pipeline (12) by opening or closing the first switching valve; The second control valve (8) is a second switching valve, which controls the opening and closing of the bypass pipeline (6) by opening or closing the second switching valve; The third control valve (9) is a third switching valve, which controls the opening and closing of the connecting pipe between the second end of the first heat exchange pipe (11) and the liquid collection pipe assembly (5) by opening or closing the third switching valve.

4. The heat exchanger assembly according to claim 1, characterized in that, The number of the second heat exchange pipelines (12) is multiple, and the multiple second heat exchange pipelines (12) are spaced apart on the heat exchanger body (1); the heat exchanger assembly includes a first gas distribution pipeline (41) and a first distributor (42), the first end of the first gas distribution pipeline (41) is connected to the gas distribution pipeline assembly (4), the second end of the first gas distribution pipeline (41) is connected to the first end of the first distributor (42), the second end of the first distributor (42) is connected to the first end of the multiple second heat exchange pipelines (12), and the first end of the bypass pipeline (6) is connected to the first gas distribution pipeline (41).

5. The heat exchanger assembly according to claim 1, characterized in that, The number of the third heat exchange pipes (13) is multiple, and the multiple third heat exchange pipes (13) are spaced apart on the heat exchanger body (1); the heat exchanger assembly includes a second gas distribution pipe (43) and a second flow divider (44), the first end of the second gas distribution pipe (43) is connected to the gas distribution pipe assembly (4), the second end of the second gas distribution pipe (43) is connected to the first end of the second flow divider (44), and the second end of the second flow divider (44) is connected to the first end of the multiple third heat exchange pipes (13).

6. The heat exchanger assembly according to claim 1, characterized in that, The heat exchanger assembly includes a first liquid collection pipe (51) and a third distributor (52). The first end of the first liquid collection pipe (51) is connected to the liquid collection pipe assembly (5), and the second end of the first liquid collection pipe (51) is connected to the first end of the third distributor (52). The second end of the third distributor (52) is connected to the second end of the first heat exchange pipe (11) and the second end of the bypass pipe (6).

7. The heat exchanger assembly according to claim 1, characterized in that, The heat exchanger assembly includes a second liquid collection pipe (53) and a third liquid collection pipe (54). The first end of the second liquid collection pipe (53) is connected to the liquid collection pipe assembly (5), the second end of the second liquid collection pipe (53) is connected to the second end of the second heat exchange pipe (12), the first end of the third liquid collection pipe (54) is connected to the liquid collection pipe assembly (5), and the second end of the third liquid collection pipe (54) is connected to the second end of the third heat exchange pipe (13).

8. The heat exchanger assembly according to claim 7, characterized in that, The number of second heat exchange pipes (12) is multiple, and the multiple second heat exchange pipes (12) are spaced apart on the heat exchanger body (1); the number of second liquid collection pipes (53) is also multiple, and the second ends of the multiple second liquid collection pipes (53) are connected one-to-one with the second ends of the multiple second heat exchange pipes (12); and / or The number of the third heat exchange pipes (13) is multiple, and the multiple third heat exchange pipes (13) are spaced apart on the heat exchanger body (1); the number of the third liquid collection pipes (54) is also multiple, and the second end of the multiple third liquid collection pipes (54) is connected to the second end of the multiple third heat exchange pipes (13) one by one.

9. The heat exchanger assembly according to claim 1, characterized in that, The first heat exchange pipeline (11), the second heat exchange pipeline (12) and the third heat exchange pipeline (13) are arranged sequentially at intervals along a predetermined direction. The first heat exchange pipeline (11), the second heat exchange pipeline (12) and the third heat exchange pipeline (13) are all formed by connecting multiple heat exchange pipes (10) in sequence.

10. An air conditioning system, characterized in that, The system includes a compressor (100), a four-way valve (200), a heat exchanger assembly (300), a throttling device (400), an outdoor unit (600), and an indoor unit (500). The compressor (100), the four-way valve (200), the heat exchanger assembly (300), and the throttling device (400) are all located inside the outdoor unit (600). The compressor (100) is connected to the four-way valve (200). The heat exchange flow paths in the four-way valve (200), the heat exchanger assembly (300), the throttling device (400), and the indoor unit (500) are connected end to end in sequence. The heat exchanger assembly (300) is the heat exchanger assembly according to any one of claims 1 to 9.

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