Heat exchanger assembly, heat exchange system and vehicle

Abstract

The utility model discloses a heat exchanger assembly, a heat exchange system and a vehicle. The heat exchanger assembly is used for the heat exchange system and comprises a heat exchange part, a first air cooler and a second air cooler, the heat exchange part forms a first sub-runner and a second sub-runner which are thermally coupled with each other, and an outlet of a compressor of the heat exchange system is connected with an inlet of the second air cooler through the first sub-runner. And the outlet of the second air cooler is connected with the inlet of the first air cooler through a second sub-runner. Thus, the medium-temperature and high-pressure refrigerant flowing out of the outlet of the second air cooler is heated again in the second sub-runner and the first sub-runner of the heat exchange piece and then enters the first air cooler, so that the high-temperature and high-pressure refrigerant in the first air cooler can preheat low-temperature air, and then the load of the first air cooler is reduced; the service life of the first air cooler is prolonged, and when the low-temperature air is subjected to secondary heat exchange in the first air cooler, the temperature of the air at the outlet of the first air cooler is uniform.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and more specifically, to a heat exchanger assembly, a heat exchange system and a vehicle. Background Art

[0002] At present, the air conditioning system of a vehicle may use two heat exchangers to increase power. However, during operation, the loads of the two heat exchangers will be different, resulting in low heat exchange efficiency. For example, when the air conditioning system is heating, the high-temperature and high-pressure gaseous refrigerant flows from the first air cooler to the second air cooler, and the cold air flows from the second air cooler to the first air cooler. The high-temperature and high-pressure refrigerant becomes a medium-temperature and high-pressure gaseous refrigerant after heat exchange with the cold air in the first air cooler, and the heat exchange capacity decreases. Therefore, the heating effect of the second air cooler on the cold air is limited, the load of the first air cooler is large, the service life of the first air cooler is short, and the cold air with a lower temperature is all accumulated in the first air cooler for heat exchange, which makes the outlet air temperature uneven due to the large temperature difference when the first air cooler performs secondary heat exchange. Utility Model Content

[0003] Embodiments of the present application provide a heat exchanger assembly, a heat exchange system, and a vehicle.

[0004] The heat exchanger assembly of the embodiment of the present application is used for a heat exchange system, and the heat exchanger assembly includes a heat exchange element, a first air cooler and a second air cooler, the heat exchange element forms a first branch channel and a second branch channel that are thermally coupled to each other, the outlet of the compressor of the heat exchange system is connected to the inlet of the second air cooler through the first branch channel, and the outlet of the second air cooler is connected to the inlet of the first air cooler through the second branch channel.

[0005] In this way, the outlet of the compressor in the heat exchange system is connected to the inlet of the second air cooler through the first branch channel, so that the high-temperature and high-pressure refrigerant in the compressor can enter the second air cooler; the outlet of the second air cooler is connected to the inlet of the first air cooler through the second branch channel, so that the first air cooler can be connected to the second air cooler, and the first branch channel and the second branch channel can be thermally coupled, so that the medium-temperature and high-pressure refrigerant flowing out of the outlet of the second air cooler can be heated again in the heat exchange element and then enter the first air cooler, so that the high-temperature and high-pressure refrigerant in the first air cooler can preheat the low-temperature air, thereby reducing the load of the first air cooler and extending the service life of the first air cooler. When the low-temperature air undergoes secondary heat exchange in the first air cooler, the outlet air temperature of the first air cooler is more uniform.

[0006] In certain embodiments, the heat exchange element includes a coaxial tube, the coaxial tube includes an inner tube and an outer tube, the first branch channel is formed in the inner tube, and the second branch channel is formed in the outer tube.

[0007] In this way, by forming the first branch channel in the inner tube of the coaxial tube and the second branch channel in the outer tube of the coaxial tube, the structure of the heat exchanger can be simplified and the space occupied by the heat exchanger can be reduced. When the medium-temperature and high-pressure refrigerant flows through the coaxial tube, heat exchange can be performed in the outer tube and the inner tube of the coaxial tube, forming a high-temperature and high-pressure refrigerant flowing into the first air cooler.

[0008] In certain embodiments, the heat exchanger assembly includes a coaxial tube, the coaxial tube includes an inner tube and an outer tube, the first air cooler includes a first heat exchange channel and a first refrigerant tube surrounding the first heat exchange channel, the first refrigerant tube is connected to the outer tube, the second air cooler includes a second heat exchange channel and a second refrigerant tube surrounding the second heat exchange channel, the second refrigerant tube is connected to the inner tube.

[0009] In this way, by providing the first air cooler with a first heat exchange channel and a first refrigerant pipe, the second air cooler with a second heat exchange channel and a second refrigerant pipe, and the first heat exchange channel is surrounded by the first refrigerant pipe and the second heat exchange channel is surrounded by the second refrigerant pipe, the heat exchange area when the low-temperature air flows through the first air cooler and the second air cooler can be increased, thereby improving the heat exchange efficiency of the heat exchanger assembly.

[0010] In certain embodiments, the heat exchanger assembly further includes a U-shaped tube, and the first branch channel is connected to the inlet of the second air cooler through the U-shaped tube.

[0011] In this way, by connecting the first branch channel and the inlet of the first air cooler through the U-shaped tube, the refrigerant can be guided from the coaxial tube to flow into the first air cooler, and when the refrigerant flows through the U-shaped tube, the pressure change of the refrigerant can be reduced, so that the refrigerant can maintain the original pressure to the maximum extent.

[0012] In certain embodiments, the heat exchanger assembly further includes a first flat tube, and the outlet of the second air cooler is connected to the second branch channel through the first flat tube.

[0013] In this way, by arranging the first flat tube on the refrigerant tube, and connecting the outlet of the second air cooler and the first branch channel through the first flat tube, the medium-temperature and high-pressure refrigerant of the second air cooler can re-enter the coaxial tube through the first flat tube for heating.

[0014] In certain embodiments, the heat exchanger assembly further includes a second flat tube, and the second flow branch channel is connected to the inlet of the first air cooler through the second flat tube.

[0015] In this way, the refrigerant pipe also includes a second flat tube, so that the second branch channel is connected to the inlet of the first air cooler through the second flat tube, and the high-temperature and high-pressure refrigerant reheated through the second branch channel can flow into the first air cooler, thereby increasing the temperature of the refrigerant entering the first air cooler.

[0016] In certain embodiments, the heat exchanger assembly further includes a refrigerant tube pressing plate, and the refrigerant tube pressing plate is used to fix the coaxial tube and the first refrigerant tube.

[0017] In this way, by providing a refrigerant tube pressure plate on the heat exchanger assembly, and the coaxial tube and the first refrigerant tube can pass through the refrigerant tube pressure plate, so that the refrigerant tube pressure plate can fix the coaxial tube between the first air cooler and the second air cooler, the structure of the heat exchanger assembly can be made compact and the space occupied by the heat exchanger assembly can be reduced.

[0018] The heat exchange system of the embodiment of the present application includes a heat exchanger assembly and a compressor as described in any one of the above items.

[0019] In certain embodiments, the heat exchange system further includes an electronic expansion valve, an evaporator and a gas-liquid separator, the first air cooler and the evaporator are connected via the electronic expansion valve, and the evaporator is connected to the inlet of the compressor via the gas-liquid separator.

[0020] In this way, by connecting the electronic expansion valve to the first air cooler and the evaporator, the medium-temperature and high-pressure refrigerant flowing out of the first air cooler can be throttled and reduced in pressure to become a low-temperature and low-pressure refrigerant that enters the evaporator; by connecting the evaporator and the gas-liquid separator, the gaseous refrigerant and liquid refrigerant that flow into the gas-liquid separator from the evaporator can be separated.

[0021] The vehicle according to the embodiment of the present application includes any one of the heat exchanger components and / or the heat exchange system described above.

[0022] In certain embodiments, the vehicle includes an air conditioning box, and the air that has exchanged heat with the second air cooler exchanges heat with the air in the air conditioning box to heat a passenger compartment of the vehicle.

[0023] In certain embodiments, the vehicle includes a battery pack, and the air that has exchanged heat with the second air cooler exchanges heat with coolant of the battery pack to heat the battery pack.

[0024] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a three-dimensional schematic diagram of a heat exchanger assembly according to certain embodiments of the present application;

[0027] Figure 2is a schematic cross-sectional view of a coaxial tube according to certain embodiments of the present application;

[0028] Figure 3 is a schematic diagram of the structure of a vehicle air conditioner according to certain embodiments of the present application;

[0029] Figure 4 It is a schematic plan view of a vehicle according to certain embodiments of the present application.

[0030] Figure Number:

[0031] 100. Vehicle; 10. Heat exchange system; 11. Heat exchanger assembly; 111. First air cooler; 1111. First heat exchange channel; 1112. First refrigerant pipe; 112. Second air cooler; 1121. Second heat exchange channel; 1122. Second refrigerant pipe; 113. Heat exchange element; 1131. First branch channel; 1132. Second branch channel; 1133. Coaxial tube; 11331. Inner tube; 11332. Outer tube; 114. U-shaped tube; 115. First flat tube; 116. Second flat tube; 117. Refrigerant pipe pressure plate; 12. Compressor; 13. Electronic expansion valve; 14. Evaporator; 15. Gas-liquid separator; 20. Air conditioning box; 30. Battery pack. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and cannot be understood as limiting the embodiments of the present application.

[0033] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In an example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection, or they can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements.

[0035] In the embodiments of the present application, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] The vehicle air conditioner includes an air cooler. In order to increase the heat exchange power of the vehicle, two air coolers are usually connected in series. However, when the vehicle is in a cold environment and the vehicle air conditioner is working for heating, since the two air coolers are connected in series, the cold air enters the two air coolers successively, resulting in different workloads of the two air coolers, so that one of the heat exchangers needs to bear a larger workload, resulting in a problem of reduced service life of the heat exchanger.

[0037] To do this, see Figure 1 , Figure 2 and Figure 3 The heat exchanger assembly 11 of the embodiment of the present application is used for the heat exchange system 10. The heat exchanger assembly 11 includes a first air cooler 111, a second air cooler 112 and a heat exchange element 113, the heat exchange element 113 forms a first branch channel 1131 and a second branch channel 1132 which are thermally coupled to each other, the outlet of the compressor 12 of the heat exchange system 10 is connected to the inlet of the second air cooler 112 through the first branch channel 1131, and the outlet of the second air cooler 112 is connected to the inlet of the first air cooler 111 through the second branch channel 1132.

[0038] In this way, the outlet of the compressor 12 in the heat exchange system 10 is connected to the inlet of the second air cooler 112 through the first branch channel 1131, so that the high-temperature and high-pressure refrigerant in the compressor 12 can enter the second air cooler 112; the outlet of the second air cooler 112 is connected to the inlet of the first air cooler 111 through the second branch channel 1132, so that the first air cooler 111 can be connected to the second air cooler 112, and the first branch channel 1131 and the second branch channel 1132 can be thermally coupled, so that the medium-temperature and high-pressure refrigerant flowing out of the outlet of the second air cooler 112 can be heated again in the heat exchange element 113 and then enter the first air cooler 111, so that the high-temperature and high-pressure refrigerant in the first air cooler 111 can preheat the low-temperature air, thereby reducing the load of the first air cooler 111 and extending the service life of the first air cooler 111. When the low-temperature air undergoes secondary heat exchange in the first air cooler 111, the outlet air temperature of the first air cooler 111 is relatively uniform.

[0039] Specifically, the heat exchanger assembly 11 includes a first air cooler 111, a second air cooler 112 and a heat exchanger 113. The heat exchanger 113 may be a coaxial tube 1133, the shape of the coaxial tube 1133 may be a round tube or a square tube, etc. The coaxial tube 1133 includes an inner tube 11331 and an outer tube 11332, and the inner tube 11331 and the outer tube 11332 are arranged at intervals and are not connected to each other. A first branch channel 1131 is formed in the inner tube 11331, and the first branch channel 1131 can connect the outlet of the compressor 12 in the heat exchange system 10 and the inlet of the second air cooler 112, so that the high-temperature and high-pressure refrigerant flowing out of the compressor 12 can flow into the second air cooler 112. A second flow channel 1132 is formed in the outer tube 11332, and the second flow channel 1132 can connect the outlet of the second air cooler 112 and the inlet of the first air cooler 111, so that the medium-temperature and high-pressure refrigerant in the second air cooler 112 flows into the first air cooler 111 after being reheated in the second flow channel 1132. In this way, by forming the first flow channel 1131 in the inner tube 11331 of the coaxial tube 1133 and forming the second flow channel 1132 in the outer tube 11332 of the coaxial tube 1133, the structure of the heat exchanger 113 can be simplified and the space occupied by the heat exchanger 113 can be reduced. And when the medium-temperature and high-pressure refrigerant flows through the coaxial tube 1133, heat exchange can be performed in the outer tube 11332 and the inner tube 11331 of the coaxial tube 1133, forming a high-temperature and high-pressure refrigerant flowing into the first air cooler 111.

[0040] The first air cooler 111 includes a first heat exchange channel 1111 and a first refrigerant pipe 1112. The first refrigerant pipe 1112 can be fixedly connected around the first air cooler 111 by any connection method such as bolt connection, riveting, welding, etc. The second air cooler 112 includes a second heat exchange channel 1121 and a second refrigerant pipe 1122. The second refrigerant pipe 1122 can be fixedly connected around the second air cooler 112 by any connection method such as bolt connection, riveting, welding, etc. In this way, by providing the first air cooler 111 with a first heat exchange channel 1111 and a first refrigerant pipe 1112, providing the second air cooler 112 with a second heat exchange channel 1121 and a second refrigerant pipe 1122, and the first heat exchange channel 1111 is surrounded by the first refrigerant pipe 1112 and the second heat exchange channel 1121 is surrounded by the second refrigerant pipe 1122, the heat exchange area when the low-temperature air flows through the first air cooler 111 and the second air cooler 112 can be increased, thereby improving the heat exchange efficiency of the heat exchanger assembly 11.

[0041] It should be noted that the first air cooler 111 and the second air cooler 112 may be plate-fin microchannel heat exchangers, shell-and-tube heat exchangers, etc. The first heat exchange channel 1111 is formed in the middle of the first air cooler 111, and the second heat exchange channel 1121 is formed in the middle of the second air cooler 112. Both the first heat exchange channel 1111 and the second heat exchange channel 1121 enable the cold air to exchange heat with the high-temperature and high-pressure gaseous refrigerant when passing through the heat exchange channel.

[0042] The first refrigerant pipe 1112 is used to transport the refrigerant to the first air cooler 111 for heat exchange, and the second refrigerant pipe 1122 is used to transport the refrigerant to the second air cooler 112 for heat exchange. The refrigerant can be a tetrafluoroethane refrigerant, a tetrafluoropropylene refrigerant, a carbon dioxide refrigerant, etc., and the heat exchange component can be a heat exchanger component 11 with general properties such as tetrafluoroethane refrigerant, tetrafluoropropylene refrigerant, or carbon dioxide refrigerant that meets the pressure resistance performance.

[0043] When the first air cooler 111 and the second air cooler 112 perform heat exchange, the high-temperature and high-pressure refrigerant can enter the second refrigerant pipe 1122 through the inner tube 11331 of the coaxial tube 1133, and after heat exchange with the second heat exchange channel 1121, the high-temperature and high-pressure refrigerant can become a medium-temperature and high-pressure refrigerant. At this time, the low-temperature air flowing through the second heat exchange channel 1121 is heated, and the low-temperature air flowing through the second heat exchange channel 1121 is preheated by the first air cooler 111.

[0044] Then, the medium-temperature and high-pressure refrigerant flows from the second refrigerant tube 1122 into the outer tube 11332 of the coaxial tube 1133, and after heat exchange with the high-temperature and high-pressure refrigerant flowing into the inner tube 11331, it flows from the outer tube 11332 of the coaxial tube 1133 into the first refrigerant tube 1112 to exchange heat with the low-temperature air of the first heat exchange channel 1111. At this time, the high-temperature and high-pressure condensation becomes medium-temperature and high-pressure refrigerant after heat exchange, and flows out from the first refrigerant tube 1112.

[0045] See also Figure 1 The heat exchanger assembly 11 further includes a U-shaped tube 114 , and the first branch channel 1131 is connected to the inlet of the second air cooler 112 through the U-shaped tube 114 .

[0046] In this way, by connecting the first branch channel 1131 and the inlet of the first air cooler 111 through the U-shaped tube 114, the refrigerant can be guided from the coaxial tube 1133 to flow into the first air cooler 111, and when the refrigerant flows through the U-shaped tube 114, the pressure change of the refrigerant can be reduced, so that the refrigerant can maintain the original pressure to the maximum extent.

[0047] Specifically, the heat exchanger assembly 11 also includes a U-shaped tube 114, which can be a round tube or a square tube. One end of the U-shaped tube 114 can be connected to the first branch channel 1131 by threaded connection, welding or other connection methods, and the other end of the U-shaped tube 114 can be connected to the inlet of the second air cooler 112 by threaded connection, welding or other connection methods, that is, the U-shaped tube 114 can be connected to the second refrigerant tube 1122, so that the inner tube 11331 can be connected to the second refrigerant tube 1122. It should be noted that at the connection between the U-shaped tube 114 and the inner tube 11331, the U-shaped tube 114 can seal the outer tube 11332, thereby preventing the refrigerant in the outer tube 11332 from re-entering the U-shaped tube 114. In this way, the U-shaped tube 114 can be used to guide the high-temperature and high-pressure gaseous refrigerant in the inner tube 11331 into the second refrigerant tube 1122.

[0048] See also Figure 1 In some embodiments, the heat exchanger assembly 11 further includes a first flat tube 115 , and the outlet of the second air cooler 112 is connected to the second branch channel 1132 through the first flat tube 115 .

[0049] In this way, by providing the first flat tube 115 on the heat exchanger assembly 11, and connecting the outlet of the second air cooler 112 and the second branch channel 1132 through the first flat tube 115, the medium-temperature and high-pressure refrigerant of the second air cooler 112 can re-enter the coaxial tube 1133 through the first flat tube 115 for heating.

[0050] Specifically, the heat exchanger assembly 11 further includes a first flat tube 115, and the shape of the first flat tube 115 can be an elliptical tube or a square tube. The outlet of the second air cooler 112 can be connected to the second shunt channel 1132 through the first flat tube 115, that is, the second refrigerant tube 1122 includes an inlet for high-temperature and high-pressure refrigerant to enter and an outlet for medium-temperature and high-pressure refrigerant to flow out, and the inlet of the second refrigerant tube 1122 is far away from one end of the U-shaped tube 114 and is close to the closed end of the outer tube 11332. The first flat tube 115 can connect the outlet of the second refrigerant tube 1122 and the second shunt channel 1132, that is, the second refrigerant tube 1122 can be connected to the outer tube 11332 of the coaxial tube 1133 through the first flat tube 115.

[0051] See also Figure 1 In some embodiments, the heat exchanger assembly 11 further includes a second flat tube 116 , and the second branch channel 1132 is connected to the inlet of the first air cooler 111 through the second flat tube 116 .

[0052] In this way, the refrigerant pipe also includes a second flat tube 116, so that the second branch channel 1132 is connected to the inlet of the first air cooler 111 through the second flat tube 116, and the high-temperature and high-pressure refrigerant reheated through the second branch channel 1132 can flow into the first air cooler 111, thereby increasing the temperature of the refrigerant entering the first air cooler 111.

[0053] Specifically, the heat exchanger assembly 11 further includes a second flat tube 116, and the shape of the second flat tube 116 can be an elliptical tube or a square tube. The first refrigerant tube 1112 includes an inlet for the high-temperature and high-pressure refrigerant to flow in. The inlet of the first refrigerant tube 1112 is arranged close to the inlet of the coaxial tube 1133, and can be mutually connected with the second flat tube 116, so that the first refrigerant tube 1112 can be connected with the second branch channel 1132 through the second flat tube 116, that is, the first refrigerant tube 1112 can be connected with the outer tube 11332 of the coaxial tube 1133 through the second flat tube 116.

[0054] See also Figure 1 In some embodiments, the heat exchanger assembly 11 further includes a refrigerant tube pressing plate 117 , and the refrigerant tube pressing plate 117 is used to fix the coaxial tube 1133 and the first refrigerant tube 1112 .

[0055] In this way, by providing a refrigerant tube pressing plate 117 on the heat exchanger assembly 11, and the coaxial tube 1133 and the first refrigerant tube 1112 can pass through the refrigerant tube pressing plate 117, so that the refrigerant tube pressing plate 117 can fix the coaxial tube 1133 between the first air cooler 111 and the second air cooler 112, the structure of the heat exchanger assembly 11 can be made compact and the space occupied by the heat exchanger assembly 11 can be reduced.

[0056] Specifically, the refrigerant tube also includes a refrigerant tube pressing plate 117, and the refrigerant tube pressing plate 117 may be in the shape of a cuboid. Two through holes are provided on the refrigerant tube pressing plate 117, and the diameters of the two through holes are respectively adapted to the diameters of the coaxial tube 1133 and the second refrigerant tube 1122, so that the coaxial tube 1133 and the second refrigerant tube 1122 are respectively penetrated by two through holes, thereby being able to fix the coaxial tube 1133 and the second refrigerant tube 1122.

[0057] See also Figure 1 and Figure 3 The heat exchanger assembly 11 of the embodiment of the present application includes the heat exchanger assembly 11 and the compressor 12 proposed in the above embodiment.

[0058] Specifically, the heat exchange system 10 can be used to dissipate heat for devices and spaces that need to dissipate heat. The heat exchange system 10 includes a heat exchanger assembly 11, a compressor 12, an electronic expansion valve 13, an evaporator 14 and a gas-liquid separator 15, and the first air cooler 111 and the evaporator 14 are connected through the electronic expansion valve 13, and the evaporator 14 is connected to the inlet of the compressor 12 through the gas-liquid separator 15. Among them, the compressor 12 can compress the low-temperature and low-pressure refrigerant into a high-temperature and high-pressure refrigerant, and transport the high-temperature and high-pressure refrigerant to the heat exchanger assembly 11; the electronic expansion valve 13 can throttle and reduce the pressure of the high-temperature and high-pressure refrigerant flowing through into a medium-temperature and low-pressure refrigerant, and connect the evaporator 14 and the first air cooler 111 in the heat exchanger assembly 11; the evaporator 14 can evaporate the liquid refrigerant into a gaseous state, and send the gaseous refrigerant to the gas-liquid separator 15; the gas-liquid separator 15 can separate the gaseous refrigerant from the liquid refrigerant, and send the gaseous refrigerant to the compressor 12.

[0059] See also Figure 1 and Figure 4 The vehicle 100 of the embodiment of the present application includes the heat exchange component proposed in the above embodiment and / or the heat exchange system 10 proposed in the above embodiment.

[0060] Specifically, the vehicle 100 includes an air conditioning box 20 and a battery pack 30. The air conditioning box 20 can be used to heat the passenger compartment of the vehicle 100; the battery pack 30 can provide power for the vehicle 100. According to the heat exchanger assembly 11 and the heat exchanger system of the embodiment of the present application, the efficiency of generating heating in the passenger compartment can be improved, and in a cold environment, the temperature in the vehicle compartment can be quickly raised to a preset temperature, or heat can be exchanged with the coolant of the battery pack 30 to heat the battery pack 30.

[0061] For example, when the vehicle 100 is in a cold environment, the air conditioner 20 needs to be started to heat the cold air and the battery pack 30 in the vehicle 100 needs to be heated. At this time, the heat exchanger assembly 11 is in a condensing working state, that is, the cold air in the heat exchanger assembly 11 needs to exchange heat with the high-temperature and high-pressure gaseous refrigerant in the air cooler, and the generated warm air is sent into the passenger compartment to exchange heat with the cooling pressure liquid of the battery pack 30 to heat the battery. Among them, the high-temperature and high-pressure gaseous refrigerant first flows into the second refrigerant tube 1122 from the inner tube 11331 of the coaxial tube 1133, and then after passing through the second refrigerant tube 1122, the high-temperature and high-pressure gaseous refrigerant exchanges heat with the low-temperature air in the second heat exchange channel 1121 to become medium-temperature and high-pressure gaseous refrigerant. Then, the medium-temperature and high-pressure gaseous refrigerant flows from the second refrigerant tube 1122 into the outer tube 11332 to exchange heat with the high-temperature and high-pressure gaseous refrigerant in the inner tube 11331, and after being reheated to become high-temperature and high-pressure gaseous refrigerant, it flows into the first refrigerant tube 1112, and finally exchanges heat with the low-temperature air in the first heat exchange channel 1111 in the first refrigerant tube 1112.

[0062] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0063] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, unless otherwise clearly and specifically defined.

[0064] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat exchanger assembly for a heat exchange system, characterized in that: The heat exchanger assembly includes a heat exchange element, a first air cooler and a second air cooler. The heat exchange element forms a first branch channel and a second branch channel that are thermally coupled to each other. The outlet of the compressor of the heat exchange system is connected to the inlet of the second air cooler through the first branch channel, and the outlet of the second air cooler is connected to the inlet of the first air cooler through the second branch channel.

2. The heat exchanger assembly according to claim 1, characterized in that The heat exchange element includes a coaxial tube, and the coaxial tube includes an inner tube and an outer tube. The first branch channel is formed in the inner tube, and the second branch channel is formed in the outer tube.

3. The heat exchanger assembly according to claim 1, characterized in that The heat exchange component includes a coaxial tube, which includes an inner tube and an outer tube. The first air cooler includes a first heat exchange channel and a first refrigerant tube surrounding the first heat exchange channel, and the first refrigerant tube is connected to the outer tube. The second air cooler includes a second heat exchange channel and a second refrigerant tube surrounding the second heat exchange channel, and the second refrigerant tube is connected to the inner tube.

4. The heat exchanger assembly according to claim 1, characterized in that The heat exchanger assembly further includes a U-shaped tube, and the first flow branch channel is connected to the inlet of the second air cooler through the U-shaped tube.

5. The heat exchanger assembly according to claim 1, characterized in that The heat exchanger assembly further includes a first flat tube, and the outlet of the second air cooler is connected to the second branch channel through the first flat tube.

6. The heat exchanger assembly according to claim 1, characterized in that The heat exchanger assembly further includes a second flat tube, and the second flow branch channel is connected to the inlet of the first air cooler through the second flat tube.

7. The heat exchanger assembly according to claim 2 or 3, characterized in that: The heat exchanger assembly also includes a refrigerant tube pressing plate, which is used to fix the coaxial tube.

8. A heat exchange system, characterized in that: The heat exchange system comprises the heat exchanger assembly according to any one of claims 1 to 7 and a compressor.

9. The heat exchange system according to claim 8, characterized in that: The heat exchange system further includes an electronic expansion valve, an evaporator and a gas-liquid separator. The first air cooler and the evaporator are connected via the electronic expansion valve, and the evaporator is connected to the inlet of the compressor via the gas-liquid separator.

10. A vehicle, characterized in that The heat exchanger comprises the heat exchanger assembly according to any one of claims 1 to 7 and / or the heat exchange system according to claim 8 or 9.

11. The vehicle according to claim 10, characterized in that The vehicle includes an air conditioning box, and the air that has exchanged heat with the second air cooler exchanges heat with the air in the air conditioning box to heat the passenger compartment of the vehicle.

12. The vehicle according to claim 10, characterized in that The vehicle includes a battery pack, and the air that has exchanged heat with the second air cooler exchanges heat with a coolant of the battery pack to heat the battery pack.

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