Heat exchange tube of heat exchanger, heat exchanger, heat exchange system and vehicle

Abstract

The utility model discloses a heat exchange tube of a heat exchanger, the heat exchanger, a heat exchange system and a vehicle, and belongs to the technical field of heat exchangers. A heat exchange pipe of the heat exchanger comprises a plurality of first flow channels and second flow channels, the first flow channels are used for circulating first media, the second flow channels are used for circulating second media, and the first media and the second media achieve heat exchange. According to the technical scheme, the different types of flow channels are distributed in the radial direction in the staggered mode, effective flowing and efficient heat exchange between the first medium and the second medium can be enhanced, and therefore the heat exchange efficiency is improved, and meanwhile by optimizing the structure of the heat exchange pipe, the heat exchange area can be increased, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of heat exchangers, and in particular relates to a heat exchange tube of a heat exchanger, a heat exchanger, a heat exchange system and a vehicle. Background Art

[0002] Currently, the heat exchange area in the heat exchange tubes of the heat exchanger is small and the heat exchange effect is poor, which makes it difficult to meet the vehicle's heat exchange needs. This will cause the cooling rate of the vehicle air conditioner and the battery fast charging performance to deteriorate, affecting the vehicle's endurance. There is room for improvement. Utility Model Content

[0003] This application aims to at least address the technical problem of low heat exchange efficiency in related technologies. To this end, this application proposes a heat exchange tube, a heat exchanger, a heat exchange system, and a vehicle for a heat exchanger, which can increase the heat exchange area by optimizing the structure of the heat exchange tube, thereby improving the heat exchange efficiency.

[0004] In a first aspect, the present application provides a heat exchange tube of a heat exchanger.

[0005] The heat exchange tube comprises:

[0006] a plurality of first flow channels, wherein the first flow channels are used for circulating a first medium;

[0007] The second flow channel is used for circulating a second medium, and the first medium and the second medium achieve heat exchange.

[0008] According to one embodiment of the present application, there are multiple second flow channels.

[0009] By optimizing the structure of the heat exchange tube, the heat exchange area can be increased and the heat exchange efficiency can be improved. At the same time, different types of flow channels are staggered in the radial direction, which can strengthen the heat exchange between the first medium and the second medium, thereby improving the heat exchange efficiency.

[0010] According to one embodiment of the present application, the first flow channels and the second flow channels are divided into multiple groups, and the first flow channels and the second flow channels in each group are staggered in the radial direction.

[0011] According to one embodiment of the present application, the heat exchange tube includes a plurality of annular regions, and any two adjacent annular regions in the radial direction are respectively provided with a plurality of the first flow channels and a plurality of the second flow channels distributed along the circumferential direction.

[0012] By adopting the heat exchange tube having a plurality of annular areas sequentially surrounding in the radial direction and adjacent annular areas being respectively provided with the first flow channel and the second flow channel, the heat exchange area can be increased, thereby improving the heat exchange efficiency.

[0013] According to one embodiment of the present application, the heat exchange tube further includes a central area, which is adjacent to the innermost annular area, the central area is provided with the first flow channel, and the innermost annular area is provided with the second flow channel.

[0014] According to one embodiment of the present application, the annular region of the first flow channel is provided with a plurality of solid regions, and on the cross section of the heat exchange tube, a line connecting the centers of the plurality of solid regions passes through the center of the heat exchange tube.

[0015] By providing a plurality of solid areas, the fluid distribution in the heat exchange tube can be adjusted so that the second media in different annular areas can converge in the second manifold during the flow process. At the same time, the plurality of solid areas can also produce a certain disturbance effect on the fluid flow in the heat exchange tube, further enhancing the heat exchange effect.

[0016] According to one embodiment of the present application, the cross-sections of the first flow channel and the second flow channel are polygonal or circular.

[0017] The cross-sections of the first flow channel and the second flow channel are polygonal or circular, each with its own advantages and disadvantages, and can be selected according to specific needs in actual applications.

[0018] According to one embodiment of the present application, the first flow channel and the second flow channel extend axially through the heat exchange tube.

[0019] In a second aspect, the present application provides a heat exchanger, comprising:

[0020] A plurality of heat exchange tubes as described in any one of the above, wherein the plurality of heat exchange tubes are arranged at intervals;

[0021] a first manifold, the first manifold being in communication with the plurality of first flow channels;

[0022] A second manifold, the second manifold is connected to the plurality of second flow channels.

[0023] According to one embodiment of the present application, a first header and a second header are provided at both ends of the heat exchange tube.

[0024] By properly arranging the heat exchange tubes, the first header, the second header and other components, effective flow and efficient heat exchange between the first medium and the second medium can be achieved.

[0025] According to one embodiment of the present application, the first header is provided with a first connecting piece, and the second header is provided with a second connecting piece.

[0026] According to one embodiment of the present application, the first connecting member passes through the second manifold, and the first connecting member is connected between the first flow channel and the first manifold;

[0027] The second connecting piece is sleeved on the outside of the first connecting piece, and the second connecting piece is connected between the second flow channel and the second manifold.

[0028] According to one embodiment of the present application, the first connector includes a plurality of first sub-connectors, the first connector and the second connector are both plural, and the second connector is sleeved outside the plurality of first sub-connectors.

[0029] The first pipe joint, the second pipe joint, the first header and the second header cooperate with each other to make the first medium and the second medium evenly distributed and efficiently flow in the heat exchange tube, thereby improving heat exchange efficiency.

[0030] According to one embodiment of the present application, one of the first manifolds is provided with a first blocking member for separating flow channels, and one of the second manifolds is provided with a second blocking member for separating flow channels.

[0031] By respectively arranging the first blocking member and the second blocking member in the first manifold and the second manifold on the same side to separate the flow channels, the flow path of the fluid can be controlled, thereby improving the heat exchange efficiency of the heat exchanger and the uniformity of fluid distribution.

[0032] According to one embodiment of the present application, the heat exchanger further includes:

[0033] a first inlet pipe and a first outlet pipe, wherein the first inlet pipe and the first outlet pipe are connected to the same first manifold, and the first blocking member is provided on the first manifold connected to the first inlet pipe, and the first blocking member is located between the first inlet pipe and the first outlet pipe;

[0034] A second inlet pipe and a second outlet pipe, the second inlet pipe and the second outlet pipe are connected to the same second manifold, and the second blocking member is provided on the second manifold connected to the second inlet pipe, and the second blocking member is located between the second inlet pipe and the second outlet pipe.

[0035] Through reasonable flow channel design and block arrangement, efficient heat exchange between the two fluids can be achieved, and the uniform distribution and stable flow of the fluids during the heat exchange process can be enhanced.

[0036] According to one embodiment of the present application, the media in the first flow channel and the second flow channel in the same heat exchange tube flow in opposite directions.

[0037] By optimizing the fluid flow path and adopting countercurrent heat exchange, the heat exchange efficiency can be improved.

[0038] According to one embodiment of the present application, the heat exchanger further includes fins, and the fins are connected between the heat exchange tubes to form air flow channels.

[0039] The fins can increase the heat exchange area and improve the heat transfer efficiency between the air side and the heat exchange tube.

[0040] In a third aspect, the present application provides a heat exchange system, comprising:

[0041] A compressor circulation loop, wherein the first flow channel in the heat exchanger is connected to the compressor circulation loop;

[0042] A liquid cooling circulation loop, wherein the second flow channel in the heat exchanger is connected to the liquid cooling circulation loop.

[0043] The heat exchange system mainly realizes heat exchange between different media through the heat exchanger, thereby achieving the purpose of energy conversion and utilization.

[0044] In a fourth aspect, the present application provides a vehicle, comprising:

[0045] The heat exchange system as described above is used to exchange heat for the vehicle.

[0046] Application of the heat exchange system in a vehicle can improve the overall performance and safety of the vehicle.

[0047] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] 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:

[0049] Figure 1 This is one of the structural diagrams of the heat exchanger provided in the embodiment of the present application;

[0050] Figure 2 is an exploded schematic diagram of a heat exchanger provided in an embodiment of the present application;

[0051] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0052] Figure 4 Schematic diagram of the structure of the heat exchange tube provided in the embodiment of the present application;

[0053] Figure 5This is the second structural diagram of the heat exchanger provided in the embodiment of the present application;

[0054] Figure 6 is a cross-sectional view of a heat exchanger provided in an embodiment of the present application;

[0055] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle;

[0056] Figure 8 This is one of the structural diagrams of the heat exchange system provided in the embodiment of the present application;

[0057] Figure 9 This is the second structural diagram of the heat exchange system provided in the embodiment of the present application.

[0058] Reference numerals:

[0059] Heat exchanger 10;

[0060] Heat exchange tube 110, first flow channel 111, second flow channel 112, first non-circulation unit 113, second non-circulation unit 114, third non-circulation unit 115, fourth non-circulation unit 116;

[0061] Central area 121, second annular area 122, third annular area 123, fourth annular area 124, fifth annular area 125, sixth annular area 126;

[0062] A first manifold 130 and a first blocking member 131;

[0063] A second manifold 140 and a second blocking member 141;

[0064] A first connecting member 151, a second connecting member 152;

[0065] a first inlet pipe 161 and a first outlet pipe 162;

[0066] a second inlet pipe 171 and a second outlet pipe 172;

[0067] Fin 180;

[0068] Compressor 201 , first electronic expansion valve 202 , evaporator 203 , powertrain 204 , battery pack 205 , one-way valve 206 , second electronic expansion valve 207 , water pump 208 , motor radiator 209 , plate heat exchanger 210 . DETAILED DESCRIPTION

[0069] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0070] This application aims to at least address the technical problem of low heat exchange efficiency in related technologies. To this end, this application proposes a heat exchange tube, a heat exchanger, a heat exchange system, and a vehicle for a heat exchanger, which can increase the heat exchange area by optimizing the structure of the heat exchange tube, thereby improving the heat exchange efficiency.

[0071] Reference below Figures 1-9 The heat exchange tube 110 according to an embodiment of the present application is described.

[0072] like Figure 1-Figure 7 As shown, the heat exchange tube 110 is the core component of the heat exchanger 10. A plurality of first flow channels 111 and second flow channels 112 are arranged in the heat exchange tube 110. The first flow channels 111 are used to circulate the first medium, and the second flow channels 112 are used to circulate the second medium. The first medium and the second medium realize heat exchange.

[0073] The first flow channel 111 and the second flow channel 112 are distributed at intervals, which helps the first medium and the second medium to fully mix and flow in their respective flow channels, thereby improving the heat exchange efficiency. The first medium is a refrigerant, such as CO2, R134a, R1234yf, etc., which flows in the first flow channel 111, and the second medium is a coolant, such as water, 50% ethylene glycol, etc., which flows in the second flow channel 112.

[0074] Each heat exchange tube 110 is provided with multiple first flow channels 111 and multiple second flow channels 112. In other words, the technical solution of the present application integrates multiple medium flow channels in a single heat exchange tube 110 to achieve heat exchange of multiple different media. At the same time, the first flow channel 111 and the second flow channel 112 extend axially and pass through the heat exchange tube 110. The first medium in the first flow channel 111 and the second medium in the second flow channel 112 transfer heat through the tube wall to achieve the purpose of heat exchange.

[0075] The first flow channel 111 and the second flow channel 112 are divided into multiple groups, and the first flow channel 111 and the second flow channel 112 in each group are staggered in the radial direction, that is, the first flow channel 111 is adjacent to the second flow channel 112, and the same flow channels are not adjacent. The heat exchange tube 110 includes multiple annular areas, and the flow channel types of any two adjacent areas along the radial direction are different. If one area is provided with the first flow channel 111, the other area is provided with the second flow channel 112, and the number of flow channels provided in each area is different, which can enhance the heat exchange between the first medium and the second medium, thereby improving the heat exchange efficiency.

[0076] Countercurrent heat exchange is an efficient heat exchange method that can maximize the temperature difference between different media. The temperature difference between the inlet and outlet of the heat exchanger 10 is large, which is conducive to the heat exchange process. During the countercurrent heat exchange process, the first medium and the second medium flow in opposite directions in the flow channel. The temperature difference between the first medium and the second medium for heat exchange will gradually increase as the heat exchange proceeds, so that the heat transfer amount also increases, thereby improving the heat exchange efficiency.

[0077] Three-medium heat exchangers are typically used to achieve two-way heat exchange between two fluids and air. However, in most three-medium heat exchangers, the contact area between the two fluids is small, resulting in inadequate heat exchange. In related art, heat exchanger 10 has a small number of fluid channels and a small heat exchange area. The header of heat exchanger 10 is typically a cylindrical cavity directly welded to a flat tube, making it impossible to effectively separate the two fluids. By optimizing the flow channels within heat exchange tube 110, this application effectively increases the heat exchange area and improves heat exchange efficiency.

[0078] According to the heat exchanger 10 provided in the embodiment of the present application, by rationally arranging the flow channels in the heat exchange tube 110, effective flow and efficient heat exchange between the first medium and the second medium can be achieved. At the same time, by optimizing the structure of the heat exchange tube 110, the heat exchange area can be increased and the heat exchange efficiency can be improved.

[0079] In some embodiments, as Figure 4 As shown, the heat exchange tube 110 has various structural forms. The following takes the heat exchange tube 110 having a honeycomb cross-section as an example.

[0080] The heat exchange tube 110 includes a central area 121 and multiple annular areas. Any two adjacent areas along the radial direction are respectively provided with a first flow channel 111 and a second flow channel 112 distributed along the circumferential direction. The same area is only provided with the first flow channel 111, or only provided with the second flow channel 112, that is, the area with the first flow channel 111 is not provided with the second flow channel 112, so as to reduce mutual interference between different flow channels. There are a total of six areas from the center of the heat exchange tube 110 to the outside, including the central area 121 and five annular areas. This multi-layer structure can further increase the heat exchange area and make heat transfer more efficient.

[0081] The innermost annular area is the second annular area 122, and the outermost annular area is the sixth annular area 126. The annular areas are provided with multiple first flow channels 111 or multiple second flow channels 112 distributed along the circumferential direction. The circumferential distribution of the flow channels helps to achieve uniform flow and temperature distribution of the fluid in the heat exchange tube 110, thereby reducing the occurrence of local overheating or overcooling.

[0082] The central area 121 is adjacent to the second annular area 122 and is located at the center of the heat exchange tube 110. From the central area 121 outward, there are the second annular area 122, the third annular area 123, the fourth annular area 124, the fifth annular area 125 and the sixth annular area 126. The central area 121 is only provided with a single first flow channel 111, the third annular area 123 and the fifth annular area 125 are provided with multiple first flow channels 111 distributed along the circumferential direction, and the second annular area 122, the fourth annular area 124 and the sixth annular area 126 are provided with multiple second flow channels 112 distributed along the circumferential direction.

[0083] The heat exchange tube 110 can be a regular hexagonal column with an equivalent diameter of 14-20 mm. The first flow channel 111 and the second flow channel 112 inside the heat exchange tube 110 are 33 and 54 respectively. Each heat exchange tube 110 is connected to a first header 130 and a second header 140 at both ends. The header can be a quadrilateral column with a closed structure at the top and bottom. The first header 130 is welded to the first inlet pipe 161 and the first outlet pipe 162, and the second header 140 is welded to the second inlet pipe 171 and the second outlet pipe 172.

[0084] It can be understood that by adopting a heat exchange tube 110 including multiple annular areas and having the first flow channel 111 and the second flow channel 112 respectively provided in any adjacent annular areas in the radial direction, the heat exchange area can be increased, thereby improving the heat exchange efficiency.

[0085] In some embodiments, as Figure 3 and Figure 4 As shown, the annular area of ​​the first flow channel 111 is provided with a plurality of solid areas. On the cross section of the heat exchange tube 110 , a line connecting the centers of the plurality of solid areas passes through the center of the heat exchange tube 110 .

[0086] The central area 121 is provided with a single first flow channel 111, the third annular area 123 and the fifth annular area 125 are provided with multiple first flow channels 111 distributed along the circumferential direction, and the second annular area 122, the fourth annular area 124 and the sixth annular area 126 are all provided with multiple second flow channels 112 distributed along the circumferential direction. The number of second flow channels 112 is greater than the number of first flow channels 111, which can enable the second medium to maintain a high flow rate and heat exchange efficiency when entering and leaving the heat exchange tube 110. At the same time, it also helps the second medium to form a stable fluid flow pattern at the inlet and outlet of the heat exchange tube 110, reducing eddy currents and turbulence.

[0087] The central area 121 in the center of the heat exchange tube 110 has only one first flow channel 111, and multiple solid areas are provided in other annular areas where the first flow channel 111 is provided, namely, in the third annular area 123 and the fifth annular area 125. The connecting line between the centers of the multiple solid areas passes through the center of the heat exchange tube 110. These solid areas are entities without holes and no fluid flows through them. They are non-circulating units. At the same time, the non-circulating units are distributed on the symmetry line of the heat exchange tube 110. The first connector 151 through which the first medium flows can be divided into four parts, each part has multiple first sub-connectors and the four parts are not connected to each other. The second media in different annular areas can flow with each other through the gaps between the four parts, and the multiple first sub-connectors are connected one-to-one with the first flow channels 111 located in the third annular area 123 and the fifth annular area 125.

[0088] like Figure 4 As shown, the multiple non-circulating units from top to bottom are the first non-circulating unit 113, the second non-circulating unit 114, the third non-circulating unit 115 and the fourth non-circulating unit 116, wherein the first non-circulating unit 113 and the fourth non-circulating unit 116 are located in the fifth annular area 125, the second non-circulating unit 114 and the third non-circulating unit 115 are located in the third annular area 123, the first non-circulating unit 113 and the fourth non-circulating unit 116 divide the first connecting member 151 connected to the first flow channel 111 of the fifth annular area 125 into two parts, and the second non-circulating unit 114 and the third non-circulating unit 115 divide the first connecting member 151 connected to the first flow channel 111 of the third annular area 123 into two parts.

[0089] After the second medium enters the second connecting piece 152 from the heat exchange tube 110, it can enter the fourth annular area 124 from the sixth annular area 126 through the first non-circulation unit 113 under the action of gravity, and then enter the second annular area 122 through the second non-circulation unit 114. Correspondingly, the second medium enters the fourth annular area 124 from the second annular area 122 through the third non-circulation unit 115, and then returns to the sixth annular area 126 through the fourth non-circulation unit 116, and finally converges at the second manifold 140.

[0090] It can be understood that by setting up multiple non-circulation units, the fluid distribution in the heat exchange tube 110 can be adjusted so that the second medium in different annular areas can converge in the second manifold 140 during the flow process. At the same time, the multiple non-circulation units can also produce a certain disturbance effect on the fluid flow in the heat exchange tube 110, further enhancing the heat exchange effect.

[0091] In some embodiments, as Figure 4 As shown, the cross-sections of the first flow channel 111 and the second flow channel 112 have various structural forms, including but not limited to:

[0092] In example 1, the cross sections of the first flow channel 111 and the second flow channel 112 are polygonal.

[0093] For example, the cross-sections of the first flow channel 111 and the second flow channel 112 may be quadrilateral, pentagonal, or hexagonal, etc. The following takes the hexagonal cross-sections of the first flow channel 111 and the second flow channel 112 as an example.

[0094] The heat exchange tube 110 is a regular hexagonal cylinder with an equivalent diameter of 14-20 mm. The number of first flow channels 111 and second flow channels 112 inside the heat exchange tube 110 is 33 and 54 respectively. The cross-section of the first flow channel 111 and the second flow channel 112 is hexagonal, which is modeled after the honeycomb structure in nature. It has excellent geometric mechanical properties, high strength and material saving. The equivalent diameter of each hexagonal unit is the same and the size can be 1-2 mm. The tube wall is between every two hexagonal units and its thickness can be 0.2-0.5 mm.

[0095] The polygonal pipes can be arranged more tightly within the heat exchange tube 110 to improve space utilization. The corners of the polygonal pipes also help reduce the deposition of impurities in the fluid and improve the self-cleaning ability of the flow channel.

[0096] In Example 2, the cross sections of the first flow channel 111 and the second flow channel 112 are circular.

[0097] The circular cross-section has lower fluid resistance, which helps the fluid maintain a stable laminar or turbulent state in the flow channel. Under the same outer diameter, the area of ​​the circle is the largest, and the area of ​​the polygon is smaller than the circle, that is, the heat exchange area of ​​the circular flow channel is larger than that of the polygonal flow channel. At the same time, when the fluid flows in the circular pipe, it can contact the wall of the heat exchange tube 110 more evenly, thereby achieving more uniform heat transfer.

[0098] It is understandable that the cross-sections of the first flow channel 111 and the second flow channel 112 are polygonal or circular, each with its own advantages and disadvantages, and can be selected according to specific needs in actual applications.

[0099] The embodiment of the present application further provides a heat exchanger 10 , which includes: a plurality of heat exchange tubes 110 , a first header 130 , a second header 140 and fins 180 .

[0100] The first header 130 and the second header 140 are provided at both ends of the heat exchange tube 110 , and the multiple heat exchange tubes 110 are arranged at intervals, which can increase the heat exchange area and reduce the flow resistance.

[0101] The first manifold 130 is connected to both ends of the heat exchange tube 110 and is in communication with a plurality of first flow channels 111. The function of the first manifold 130 is to collect and distribute the first medium so that the first medium can flow evenly into the first flow channel 111 of each heat exchange tube 110 and flow out from the other end. Through the plurality of first flow channels 111 and the two first manifolds 130 connected to both ends of the heat exchange tube 110, the first medium can form a closed-loop flow system within the heat exchanger 10.

[0102] Similarly, the second manifold 140 is also connected to both ends of the heat exchange tube 110 and is in communication with the plurality of second flow channels 112. The function of the second manifold 140 is to collect and distribute the second medium so that the second medium can flow evenly into the second flow channel 112 of each heat exchange tube 110 and flow out from the other end. Through the plurality of second flow channels 112 and the two second manifolds 140 connected to both ends of the heat exchange tube 110, the second medium can form a closed-loop flow system within the heat exchanger 10.

[0103] It is understandable that the materials of the plurality of heat exchange tubes 110 , the first header 130 and the second header 140 may be aluminum, stainless steel, copper or the like.

[0104] Fins 180 are connected between heat exchange tubes 110 to form air flow channels. The main function of fins 180 is to increase the heat exchange area and improve the heat transfer efficiency between the air side and the heat exchange tubes 110. The surface of fins 180 can be provided with corrugations or windows to enhance heat exchange. When air flows through the flow channel between fins 180, the air exchanges heat with fins 180 and heat exchange tubes 110. In addition, fins 180 can also support two adjacent heat exchange tubes 110, thereby enhancing the structural strength of the heat exchanger and improving the stability and durability of the heat exchanger 10.

[0105] In some embodiments, as Figure 2 and Figure 7 As shown, the heat exchanger 10 further includes: a first connector 151 and a second connector 152 , the second header 140 is arranged between the first header 130 and the heat exchange tube 110 , the first header 130 is provided with the first connector 151 , and the second header 140 is provided with the second connector 152 .

[0106] The main function of the first header 130 and the second header 140 is to serve as an intermediate link for fluid distribution and merging, so that the fluid can be evenly distributed to each heat exchange tube 110 and re-gathered after the heat exchange is completed for further processing or discharge.

[0107] The second manifold 140 is arranged between the first manifold 130 and the heat exchange tube 110, and is welded to the first inlet pipe 161 and the first outlet pipe 162. The first connecting piece 151 is connected between the first flow channel 111 and the first manifold 130, that is, the first connecting piece 151 can make the first manifold 130 and the first flow channel 111 connected. The first medium at the inlet of the heat exchange tube 110 can be distributed from the first manifold 130 to the first flow channel 111 through the first connecting piece 151, and the first medium at the outlet of the heat exchange tube 110 can be collected from the first flow channel 111 through the first connecting piece 151 to the first manifold 130.

[0108] The first connecting member 151 is a solid area distributed along the symmetry line in the third annular area 123 and the fifth annular area 125. The first connecting member 151 passes through the side wall of the second manifold 140 close to the first manifold 130, that is, one end of the first connecting member 151 is connected to the first manifold 130, and the other end is connected to the first flow channel 111. The first connecting member 151 is mainly used to extend the first flow channel 111 to the first manifold 130, and can also be used to support the structure of the heat exchange tube 110, or serve as a barrier to fluid flow to optimize the distribution and flow path of the fluid in the flow channel.

[0109] The second connecting member 152 is connected between the side wall of the second collecting pipe 140 facing away from the first collecting pipe 130 and the heat exchange tube 110, that is, the second connecting member 152 can serve as a bridge connecting the second collecting pipe 140 and the second flow channel 112 in the heat exchange tube 110, so that the second collecting pipe 140 and the second flow channel 112 are connected. There are multiple first connecting members 151 and second connecting members 152, and the first connecting member 151 includes multiple first sub-connectors, and the multiple first sub-connectors correspond one-to-one to the multiple first flow channels 111, and one of the second connecting members 152 is arranged outside the multiple first sub-connectors.

[0110] A cavity is formed between the first connecting member 151 and the second connecting member 152, which are respectively connected to the second header 140 and the second flow channel 112. The second medium at the inlet of the heat exchange tube 110 can be distributed from the second header 140 to the second flow channel 112 through the cavity, and the second medium at the outlet of the heat exchange tube 110 can be collected from the second flow channel 112 to the second header 140 through the cavity.

[0111] The sleeve structure in which a second connector 152 is sleeved outside multiple first sub-connectors can simplify the structure of the heat exchanger 10, reduce the number and complexity of connectors, and reduce the risk of fluid leakage. At the same time, through the optimized arrangement of the first connector 151 and the second connector 152, the flow of the fluid in the heat exchange tube 110 is more uniform and stable, which helps to reduce the resistance and energy loss of the fluid during the flow process and improve the heat exchange efficiency of the heat exchanger 10.

[0112] It is understandable that the first connector 151 , the second connector 152 , the first header 130 and the second header 140 work together to evenly distribute and efficiently flow the first medium and the second medium in the heat exchange tube 110 , thereby improving heat exchange efficiency.

[0113] In some embodiments, as Figure 6 and Figure 7 As shown, one of the first manifolds 130 is provided with a first blocking member 131 for separating flow channels, and one of the second manifolds 140 is provided with a second blocking member 141 for separating flow channels.

[0114] The main function of the first blocking member 131 and the second blocking member 141 is to separate the flow channels. By separating the flow channels, the first blocking member 131 and the second blocking member 141 can guide the fluid to flow along a predetermined path, reduce mixing and interference between the fluids, help reduce the resistance and energy loss of the fluid during the flow process, and improve the overall performance of the heat exchanger 10.

[0115] The first blocking member 131 is located in the middle position of one of the first manifolds 130 along the length direction, dividing the first manifold 130 into two parts of equal length. The second blocking member 141 is located in the middle position of one of the second manifolds 140 along the length direction, dividing the second manifold 140 into two parts of equal length, wherein the first blocking member 131 and the second blocking member 141 are located on the same side of the first manifold 130 and the second manifold 140.

[0116] It can be understood that by respectively arranging the first blocking member 131 and the second blocking member 141 in the first manifold 130 and the second manifold 140 on the same side to separate the flow channels, the flow path of the fluid can be controlled, thereby improving the heat exchange efficiency of the heat exchanger 10 and the uniformity of fluid distribution.

[0117] In some embodiments, as Figure 1 As shown, the heat exchanger 10 further includes: a first inlet pipe 161 , a first outlet pipe 162 , a second inlet pipe 171 and a second outlet pipe 172 .

[0118] The first inlet pipe 161 and the first outlet pipe 162 are connected to the same first manifold 130, and the first blocking member 131 is arranged on the first manifold 130 connected to the first inlet pipe 161, and the first blocking member 131 is located between the first inlet pipe 161 and the first outlet pipe 162; the second inlet pipe 171 and the second outlet pipe 172 are connected to the same second manifold 140, and the second blocking member 141 is arranged on the second manifold 140 connected to the second inlet pipe 171, and the second blocking member 141 is located between the second inlet pipe 171 and the second outlet pipe 172.

[0119] The first medium enters the heat exchanger 10 through the first inlet pipe 161 and leaves the heat exchanger 10 through the first outlet pipe 162. That is, the first inlet pipe 161 is located upstream of the first medium flow path, and the first outlet pipe 162 is located downstream of the first medium flow path. The first inlet pipe 161 and the first outlet pipe 162 are both connected to the first header 130 by welding. The first header 130 is the main component for distributing and merging the first medium. It is responsible for evenly distributing the first medium entering from the first inlet pipe 161 to each heat exchange tube 110, and collecting the first medium flowing out of the heat exchange tube 110, and finally discharging it through the first outlet pipe 162.

[0120] Similar to the first medium, the second medium enters the heat exchanger 10 through the second inlet pipe 171 and leaves the heat exchanger 10 through the second outlet pipe 172. That is, the second inlet pipe 171 is located upstream of the second medium flow path, and the second outlet pipe 172 is located downstream of the second medium flow path. The second inlet pipe 171 and the second outlet pipe 172 are both connected to the second header 140 by welding. The second header 140 serves as the main component for distributing and merging the second medium. It is responsible for evenly distributing the second medium entering from the second inlet pipe 171 to each heat exchange tube 110, and collecting the second medium flowing out of the heat exchange tube 110, and finally discharging it through the second outlet pipe 172.

[0121] The first blocking member 131 is arranged in the first manifold 130 connected to the first inlet pipe 161, and is located between the first inlet pipe 161 and the first outlet pipe 162. The main function of the first blocking member 131 is to separate the flow channel and optimize the flow path of the first medium. Similar to the second blocking member 141, the second blocking member 141 is arranged in the second manifold 140 connected to the second inlet pipe 171, and is located between the second inlet pipe 171 and the second outlet pipe 172. The main function of the second blocking member 141 is to separate the flow channel and optimize the flow path of the second medium.

[0122] During actual operation, the first medium enters the first manifold 130 from the first inlet pipe 161, and after being separated by the first baffle 131, is evenly distributed to the first flow channels 111 of the multiple heat exchange tubes 110 located between the first inlet pipe 161 and the first baffle 131. The second medium enters the second manifold 140 from the second inlet pipe 171, and after being separated by the second baffle 141, is evenly distributed to the second flow channels 112 of the multiple heat exchange tubes 110 located between the second inlet pipe 171 and the second baffle 141. In the heat exchange tube 110, the first medium and the second medium exchange heat. After the heat exchange is completed, the first medium flows out from the other end of the heat exchange tube 110 and is collected in the first manifold 130, and is finally discharged through the first outlet pipe 162. The second medium flows out from the other end of the heat exchange tube 110 and is collected in the second manifold 140, and is finally discharged through the second outlet pipe 172.

[0123] It is understandable that through reasonable flow channel design and arrangement of baffles, efficient heat exchange between the two fluids can be achieved, and the uniform distribution and stable flow of the fluids during the heat exchange process can be enhanced.

[0124] In some embodiments, the media in the first flow channel 111 and the second flow channel 112 in the same heat exchange tube 110 flow in opposite directions.

[0125] Countercurrent heat exchange is an efficient heat exchange method that can maximize the temperature difference between different media. The temperature difference between the inlet and outlet of the heat exchanger 10 is large, which is conducive to the heat exchange process. During the countercurrent heat exchange process, the first medium and the second medium flow in opposite directions in the flow channel. The temperature difference between the first medium and the second medium for heat exchange will gradually increase as the heat exchange proceeds, so that the heat transfer amount also increases, thereby improving the heat exchange efficiency.

[0126] The first inlet pipe 161 and the first outlet pipe 162 are connected to the same first header 130, the second inlet pipe 171 and the second outlet pipe 172 are connected to the same second header 140, and the first header 130 and the second header 140 connected with the inlet and outlet pipes are located on the same side, wherein the first inlet pipe 161 and the first outlet pipe 162 are respectively close to the two ends of the first header 130, the second inlet pipe 171 and the second outlet pipe 172 are respectively close to the two ends of the second header 140, the first inlet pipe 161 and the second outlet pipe 172 are close to the same end, and the first outlet pipe 162 and the second inlet pipe 171 are close to the same end.

[0127] The first medium enters the first flow channel 111 in the heat exchange tube 110 from the first inlet pipe 161 and flows along the length of the tube. After reaching the first header 130 on the other side, it enters the first flow channel 111 of a different heat exchange tube 110 and flows along the length of the tube, and finally flows out from the first outlet pipe 162. At the same time, the second medium in the second flow channel 112 enters the second flow channel 112 in the heat exchange tube 110 from the second inlet pipe 171 and flows along the length of the tube. After reaching the second header 140 on the other side, it enters the second flow channel 112 of a different heat exchange tube 110 and flows along the length of the tube, and finally flows out from the second outlet pipe 172. The media in the first flow channel 111 and the second flow channel 112 in the same heat exchange tube 110 flow in opposite directions. The temperature of the hot fluid gradually decreases, while the temperature of the cold fluid gradually increases. The two maintain a large temperature difference at any position in the heat exchange tube 110. The large temperature difference means that more heat can be transferred under the same heat exchange area, and the heat exchange efficiency is higher.

[0128] It is understandable that by optimizing the fluid flow path and adopting a countercurrent heat exchange method, the heat exchange efficiency can be improved.

[0129] The present application also provides a heat exchange system, such as Figure 8 and Figure 9 As shown, the heat exchange system includes a compressor 201 circulation loop and a liquid cooling circulation loop, wherein the heat exchanger 10, the power assembly 204, the water pump 208, the motor radiator 209 and the plate heat exchanger 210 constitute the liquid cooling circulation loop, and other equipment constitutes the compressor 201 circulation loop. The first flow channel 111 in the heat exchanger 10 is connected to the compressor 201 circulation loop, and the second flow channel 112 in the heat exchanger 10 is connected to the liquid cooling circulation loop.

[0130] A heat exchange system is a device or system used to transfer heat between different media to achieve efficient energy utilization and conversion. The heat exchanger 10 is the core component of the heat exchange system. Its main function is to achieve heat exchange between two or more fluids. These fluids can be gases, liquids, or gas-liquid mixtures. They are brought into contact through the specific structure of the heat exchanger 10, such as pipes, plates, etc., to achieve heat transfer.

[0131] It can be understood that the heat exchange system mainly realizes heat exchange between different media through the heat exchanger 10, thereby achieving the purpose of energy conversion and utilization.

[0132] In this embodiment, if Figure 8 and Figure 9 As shown, the heat exchange system has a low-temperature cooling condition and a high-temperature cooling condition.

[0133] like Figure 8As shown, the ambient temperature during low-temperature cooling operation is approximately -10 to 10°C. In the compressor 201 circulation loop, the cold plate in the battery pack 205 has a large charge-discharge cycle load, and the cold plate needs to be cooled. At the same time, the air inlet temperature of the condenser outside the vehicle is low at this ambient temperature, and the heat dissipation performance is excessive. The first medium state parameter at the cooling outlet of the battery pack 205 can only be adjusted by reducing the speed of the compressor 201, resulting in a decrease in the mass flow rate of the first medium and uncontrollable overheating of the cold plate outlet, resulting in poor cooling effect of the battery pack 205 and a high risk of battery overtemperature alarm.

[0134] like Figure 8 As shown, the low-temperature, low-pressure gaseous first medium is compressed by the compressor 201 into a high-temperature, high-pressure gaseous first medium, and then enters the heat exchanger 10 to exchange heat with the second medium and the air. After the heat exchange is completed, the first medium becomes a medium-temperature, medium-pressure liquid. After passing through the first electronic expansion valve 202, the medium-temperature, medium-pressure liquid first medium is throttled to a low-temperature, low-pressure two-phase first medium, and then enters the evaporator 203 to absorb heat from the passenger compartment, becoming a low-temperature, low-pressure superheated gaseous first medium, and finally returns to the compressor 201. At the same time, in the liquid cooling circulation loop, the second medium absorbs heat from the powertrain 204 under the action of the water pump 208. The high-temperature second medium enters the heat exchanger 10 to exchange heat with the first medium and the air. At this time, the heat exchange demand of the first medium is relatively small, and the high-temperature second medium can partially offset the influence of the low-temperature air on the heat exchange performance, effectively solving the overtemperature alarm problem in the low-temperature cooling condition.

[0135] like Figure 9 As shown, in the high-temperature cooling condition, in the compressor 201 circulation loop, the low-temperature, low-pressure gaseous first medium is compressed by the compressor 201 into a high-temperature, high-pressure gaseous first medium, which then enters the heat exchanger 10 to exchange heat with the second medium and the air. After the heat exchange is completed, the first medium becomes a medium-temperature, medium-pressure liquid. At this time, a portion of the first medium is throttled by the first electronic expansion valve 202 to a low-temperature, low-pressure two-phase state, which enters the evaporator 203 to absorb heat from the passenger compartment. The other portion is throttled by the one-way valve 206 and the second electronic expansion valve 207 to a low-temperature, low-pressure two-phase state, which enters the battery pack 205 to absorb heat dissipated by the batteries. The first medium becomes a low-temperature, low-pressure superheated gaseous state and finally returns to the compressor 201. At the same time, in the liquid cooling circulation loop, the second medium is cooled by the motor radiator 209 under the action of the water pump 208 and is divided into two parts. One part enters the heat exchanger 10 to absorb heat from the first medium, and the other part enters the powertrain 204 to cool the motor. Then, the two parts of the second medium are combined into the plate heat exchanger 210 to dissipate heat, completing the heat exchange.

[0136] Under this working condition, the effective coupling of air cooling and water cooling can make the first medium dissipate heat and cool down more efficiently, and the heat exchanger 10 has strong heat exchange capacity, compact structure, and small size, which can reduce the volume occupied by the front cabin and save layout space, effectively solving the problem that the existing air-cooled condenser is large in size, has limited layout space, and cannot meet the heat dissipation requirements under high-temperature double-opening and super-fast charging conditions.

[0137] An embodiment of the present application further provides an electrical device, comprising: a heat exchange system, the heat exchange system being used to exchange heat for a vehicle.

[0138] In the technical solution of the present application, the vehicle may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.

[0139] Among them, electric vehicles or hybrid vehicles usually integrate multiple electrical devices, and energy storage devices are one of the core electrical devices. The large amount of heat generated by the energy storage devices during the charging and discharging process can be dissipated promptly and effectively through the heat exchange system, allowing the energy storage devices to operate within the optimal operating temperature range, thereby improving the vehicle's acceleration performance and endurance.

[0140] It is understandable that the application of heat exchange systems in vehicles can improve the overall performance and safety of the vehicle.

[0141] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0142] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations 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 should not be understood as a limitation on the present application.

[0143] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0144] In the description of this application, “plurality” means two or more.

[0145] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0146] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0147] Throughout this specification, reference to terms such as "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 embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0148] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat exchange tube of a heat exchanger, characterized in that: include: a plurality of first flow channels, wherein the first flow channels are used for circulating a first medium; The second flow channel is used for circulating a second medium, and the first medium and the second medium achieve heat exchange.

2. The heat exchange tube of the heat exchanger according to claim 1, characterized in that: There are multiple second flow channels.

3. The heat exchange tube of the heat exchanger according to claim 2, characterized in that: The first flow channels and the second flow channels are divided into multiple groups, and the first flow channels and the second flow channels in each group are staggered in radial direction.

4. The heat exchange tube of the heat exchanger according to claim 3, characterized in that: The heat exchange tube includes a plurality of annular regions, and any two adjacent annular regions in the radial direction are respectively provided with a plurality of the first flow channels and a plurality of the second flow channels distributed along the circumferential direction.

5. The heat exchange tube of the heat exchanger according to claim 4, characterized in that: The heat exchange tube further includes a central area, which is adjacent to the innermost annular area. The central area is provided with the first flow channel, and the innermost annular area is provided with the second flow channel.

6. The heat exchange tube of the heat exchanger according to claim 4, characterized in that: The annular area of ​​the first flow channel is provided with a plurality of solid areas. On the cross section of the heat exchange tube, a line connecting the centers of the plurality of solid areas passes through the center of the heat exchange tube.

7. The heat exchange tube of the heat exchanger according to claim 3, characterized in that: The cross sections of the first flow channel and the second flow channel are polygonal or circular.

8. The heat exchange tube of the heat exchanger according to claim 4, characterized in that: The first flow channel and the second flow channel extend axially through the heat exchange tube.

9. A heat exchanger, characterized in that: include: A plurality of heat exchange tubes according to any one of claims 1 to 8, wherein the plurality of heat exchange tubes are arranged at intervals; a first manifold, the first manifold being in communication with the plurality of first flow channels; A second manifold is connected to the plurality of second flow channels.

10. The heat exchanger according to claim 9, characterized in that Both ends of the heat exchange tube are provided with a first header and a second header.

11. The heat exchanger according to claim 10, characterized in that The second header is arranged between the first header and the heat exchange tubes.

12. The heat exchanger according to claim 11, characterized in that The first header is provided with a first connecting piece, and the second header is provided with a second connecting piece.

13. The heat exchanger according to claim 12, characterized in that The first connecting member passes through the second manifold, and the first connecting member is connected between the first flow channel and the first manifold; The second connecting piece is sleeved on the outside of the first connecting piece, and the second connecting piece is connected between the second flow channel and the second manifold.

14. The heat exchanger according to claim 13, characterized in that The first connecting member includes a plurality of first sub-connecting members, the first connecting member and the second connecting member are both in plurality, and the second connecting member is sleeved outside the plurality of first sub-connecting members.

15. The heat exchanger according to claim 9, characterized in that One of the first manifolds is provided with a first blocking member for separating flow channels, and one of the second manifolds is provided with a second blocking member for separating flow channels.

16. The heat exchanger according to claim 15, characterized in that Also includes: a first inlet pipe and a first outlet pipe, wherein the first inlet pipe and the first outlet pipe are connected to the same first manifold, and the first blocking member is provided on the first manifold connected to the first inlet pipe, and the first blocking member is located between the first inlet pipe and the first outlet pipe; A second inlet pipe and a second outlet pipe, the second inlet pipe and the second outlet pipe are connected to the same second header, and the second blocking member is provided on the second header connected to the second inlet pipe, and the second blocking member is located between the second inlet pipe and the second outlet pipe.

17. The heat exchanger according to any one of claims 9 to 16, characterized in that: The media in the first flow channel and the second flow channel in the same heat exchange tube flow in opposite directions.

18. The heat exchanger according to claim 17, characterized in that It also includes fins, which are connected between the heat exchange tubes to form air flow channels.

19. A heat exchange system, characterized in that: include: A compressor circulation loop, wherein the first flow channel in the heat exchanger according to any one of claims 9 to 17 is connected to the compressor circulation loop; A liquid cooling circulation loop, wherein the second flow channel in the heat exchanger is connected to the liquid cooling circulation loop.

20. A vehicle, characterized in that: include: The heat exchange system according to claim 19, wherein the heat exchange system is used to exchange heat for the vehicle.

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