Three-medium heat exchanger, machining method and heat management system

Abstract

The invention relates to the technical field of heat exchange equipment, in particular to a three-medium heat exchanger, a machining method and a heat management system, and the three-medium heat exchanger comprises a first core body, a second core body, a first fluid branch collecting pipe and a second fluid branch collecting pipe. The first core body comprises a plurality of integrated flat pipes and a plurality of first cooling fins. The integrated flat pipe is integrally formed by a first fluid channel and a second fluid channel; and the first radiating fins are fixed on the integrated flat pipes. The second core body comprises a plurality of first fluid flat pipes and a plurality of second cooling fins. A first fluid channel is formed in the first fluid flat pipe; and the second radiating fins are fixed on the first fluid flat pipes. According to the heat exchanger, the integrally-formed machining technology is adopted, the procedures of solder coating, bundling and brazing in the attaching process of the two layers of independent flat pipes in the prior art are replaced, the installation efficiency and the heat exchange efficiency are improved, the area of the fins is effectively increased, and for a large-cooling-capacity system, the size of the heat exchanger can be reduced, so that the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and in particular to a three-medium heat exchanger, a processing method and a thermal management system. Background Art

[0002] Three-medium heat exchangers, which can exchange heat between three fluids in pairs or simultaneously, can replace multiple existing two-medium heat exchangers in areas such as building air conditioning, new energy vehicles, energy storage systems, and industrial cooling. This technology offers broad development prospects, achieving multiple heat exchanger functions while improving efficiency. For example, in automotive thermal management systems, a single three-medium heat exchanger can replace the existing radiator and condenser, dissipating heat from the motor, battery, and passenger compartment while simultaneously utilizing coolant and air for rapid heat dissipation, meeting the cooling needs of scenarios such as rapid cabin cooling and high-temperature rapid battery charging.

[0003] For example, a three-medium heat exchanger based on microchannel flat tubes, capable of exchanging heat between refrigerant, coolant, and air, typically consists of a microchannel flat tube bundle for the two media, fins, side plates, two sets of manifolds, and two sets of inlet and outlet pipes. Prior art microchannel flat tube bundles employ a double-layer flat tube bonded structure, which achieves heat exchange between the two heat exchange media by directly bonding and brazing the two flat tubes. The flat tubes in this microchannel flat tube bundle are bonded to the outer walls of the two flat tubes, resulting in an overall flat appearance. Multiple heat exchange pipes with flow channels of arbitrary shapes and sizes are arranged in an array across their cross-section.

[0004] The above flat tube structure has the following deficiencies in the processing and application of heat exchangers: (1) It is necessary to apply solder to the flat tube surface in advance and tie it up and fix it, and then braze it together with the heat exchanger. During this process, the workload is increased, which seriously affects the production rate of the heat exchanger.

[0005] (2) The two media need to pass through the tube wall and solder of their own heat exchange tubes before heat exchange. The three-part thermal resistance makes the heat exchange between the two media in the tube poor.

[0006] (3) The two layers of tube wall and one layer of solder increase the proportion of flat tubes on the windward side, reducing the fin area, resulting in a decrease in the heat exchange performance between the refrigerant or coolant and the air. For high-capacity systems, the heat exchanger volume must be increased to improve the heat exchange effect, which invisibly increases production costs and reduces the product's competitiveness in the market.

[0007] Therefore, existing flat tube structure heat exchangers have the problems of high assembly difficulty, poor heat exchange performance and high cost. Summary of the Invention

[0008] The present invention provides a three-medium heat exchanger, a processing method and a thermal management system, which are used to solve the problems of high assembly difficulty, poor heat exchange performance and high cost in the prior art.

[0009] The present invention provides a three-medium heat exchanger, comprising: The first core comprises: A plurality of integrated flat tubes are integrally formed by the first fluid channel and the second fluid channel; a plurality of first heat dissipation fins fixed on the integrated flat tube and arranged alternately with the integrated flat tube; The second core comprises: a plurality of first fluid flat tubes, forming the first fluid channels; a plurality of second heat dissipation fins fixed on the first fluid flat tubes and arranged alternately with the first fluid flat tubes; a first fluid distribution manifold, wherein the first fluid channel of the first core is in communication with the first fluid distribution manifold, and the first fluid channel of the second core is in communication with the first fluid distribution manifold; A second fluid sub-manifold is provided, and the second fluid channel is communicated with the second fluid sub-manifold.

[0010] The three-medium heat exchanger provided by the present invention further includes: a third core, the third core being disposed adjacent to the first core or the second core; The third core comprises: a plurality of second fluid flat tubes, forming the second fluid channels; A plurality of third heat dissipating fins are fixed on the second fluid channel and arranged in a staggered manner with the second fluid channel; the second fluid channel of the third core is communicated with the second fluid distribution manifold.

[0011] According to the three-medium heat exchanger provided by the present invention, the second fluid sub-manifold has a first arc-shaped structure facing toward the second fluid channel; The first fluid sub-manifold is located on a side of the first arc-shaped structure away from the second fluid channel.

[0012] According to the three-medium heat exchanger provided by the present invention, the second fluid sub-manifold is formed with a plurality of through holes, and the first fluid sub-manifold is connected to the first fluid channel through the through holes.

[0013] According to the three-medium heat exchanger provided by the present invention, the second fluid sub-manifold has a second arc-shaped structure facing away from the second fluid channel; The first fluid distribution manifold is fixed on a side of the second arc-shaped structure close to the second fluid channel.

[0014] According to the three-medium heat exchanger provided by the present invention, the second fluid distribution manifold can be composed of a main board and a shell. The main board is installed on one side of the first fluid channel and connected to the shell by plugging, clamping or welding.

[0015] According to the three-medium heat exchanger provided by the present invention, the second fluid distribution manifold has a flat plate structure perpendicular to the second fluid channel; The first fluid sub-manifold and the second fluid sub-manifold share the flat plate structure portion and each forms a closed structure as a whole.

[0016] The present invention also provides a method for processing a three-medium heat exchanger, which is used to process the three-medium heat exchanger of the present invention, comprising: Hot casting and extrusion: After the aluminum ingot is melted, it is poured into the first set of flat tube dies or extruded into the first set of flat tube dies; Cooling and demoulding: The double-row micro-channel heat exchange flat tube is processed through the first set of flat tube molds to form the first fluid channel and the second fluid channel of the integrated flat tube.

[0017] The processing method of the three-medium heat exchanger provided by the present invention further comprises, after the cooling and demoulding steps: Machining: Flatten a portion of the outer tube wall of the second fluid channel on both sides of the integrated flat tube.

[0018] The processing method of the three-medium heat exchanger provided by the present invention further comprises, after the mechanical processing step: Cold extrusion forming process: The tube walls near the first fluid channels on both sides of the integrated flat tube are extruded through the second set of flat tube dies to form arc-shaped corners.

[0019] The processing method of the three-medium heat exchanger provided by the present invention further comprises, after the cooling and demoulding steps: By machining the outer wall of the integrated flat tube, the first heat dissipating fin and the integrated flat tube are integrally formed to form a flying wing-shaped fin structure.

[0020] The processing method of the three-medium heat exchanger provided by the present invention further comprises, after the cooling and demoulding steps: By arranging grooves in the first set of flat tube molds, the tube wall of the integrated flat tube and each medium hydraulic channel form an internal rib structure.

[0021] The present invention provides a three-medium heat exchanger and a processing method thereof. The three-medium heat exchanger includes: a first core, a second core, a first fluid sub-manifold and a second fluid sub-manifold. The first core includes: a plurality of integrated flat tubes and a plurality of first heat dissipation fins. The integrated flat tube is integrally formed by the first fluid channel and the second fluid channel; the first heat dissipation fin is fixed on the integrated flat tube and arranged alternately with the integrated flat tube. The second core includes: a plurality of first fluid flat tubes and a plurality of second heat dissipation fins. The first fluid flat tube is formed with a first fluid channel; the second heat dissipation fin is fixed on the first fluid flat tube and arranged alternately with the first fluid flat tube. The first fluid channel of the first core is connected to the first fluid sub-manifold, the first fluid channel of the second core is connected to the first fluid sub-manifold; the second fluid channel is connected to the second fluid sub-manifold. The present invention provides a three-medium heat exchanger, which adopts an integrated molding processing technology to realize the preparation of integrated flat tubes, replacing the process of applying solder, bundling and brazing when two layers of independent flat tubes are bonded together in the existing technology, thereby improving installation efficiency; the two fluids in the integrated flat tubes only have thin tube walls to conduct heat, and the heat exchange efficiency is higher than the heat conduction method of tube wall-solder layer-tube wall when independent flat tubes are bonded together; on the other hand, the proportion of the flat tube area on the windward side is reduced, the area of ​​the fins can be increased, and the heat exchange efficiency between the heat exchange medium and the external environment can be further improved. For large cooling capacity systems, the volume of the heat exchanger can be reduced, thereby reducing production costs.

[0022] The present invention also provides a thermal management system, comprising: the three-medium heat exchanger of the present invention.

[0023] Furthermore, the present invention provides a thermal management system, which includes the three-medium heat exchanger in the above-mentioned embodiment of the present invention. The thermal management system can utilize the efficient heat exchange characteristics of the three-medium heat exchanger of the present invention to replace the existing radiator and condenser to meet the heat dissipation of the motor, battery and passenger compartment. It can also simultaneously utilize coolant and air to achieve rapid heat dissipation, meeting the heat dissipation requirements in scenarios such as rapid cooling in the cabin and high-temperature fast charging of batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the overall assembly of a three-medium heat exchanger provided in one embodiment of the present invention.

[0026] Figure 2It is a schematic diagram of partial structural disassembly of a three-medium heat exchanger provided in one embodiment of the present invention.

[0027] Figure 3 1 is a top view of a three-medium heat exchanger provided in one embodiment of the present invention.

[0028] Figure 4 FIG. 1 is a side view of an integrated flat tube provided in one embodiment of the present invention.

[0029] Figure 5 FIG. 1 is a side view of a first fluid flat tube in one embodiment of the present invention.

[0030] Figure 6 FIG. 1 is a side view of a second fluid flat tube in one embodiment of the present invention.

[0031] Figure 7 It is a structural schematic diagram of an integrated flat tube obtained after the cooling and demoulding steps in a processing method of a three-medium heat exchanger in one embodiment of the present invention.

[0032] Figure 8 It is a structural schematic diagram of an integrated flat tube obtained after the machining step in a processing method of a three-medium heat exchanger in one embodiment of the present invention.

[0033] Figure 9 It is a structural schematic diagram of a first core obtained after machining the first heat dissipation fins in a processing method of a three-medium heat exchanger in one embodiment of the present invention.

[0034] Figure 10 It is a schematic structural diagram of the cooperation between the first fluid sub-manifold and the second fluid sub-manifold in one embodiment of the present invention.

[0035] Figure 11 yes Figure 10 Schematic diagram of the structure of the second fluid distribution manifold.

[0036] Figure 12 It is a schematic structural diagram of the cooperation between the first fluid sub-manifold and the second fluid sub-manifold in one embodiment of the present invention.

[0037] Figure 13 yes Figure 12 Schematic diagram of the structure of the second fluid distribution manifold.

[0038] Figure 14 It is a schematic structural diagram of the cooperation between the first fluid sub-manifold and the second fluid sub-manifold in one embodiment of the present invention.

[0039] Reference numerals: 100: First core; 200: Second core; 1: Integrated flat tube; 11: First fluid channel; 12: Second fluid channel; 10: Tube wall; 2: First fluid flat tube; 3: Second fluid distribution manifold; 30: Second joint; 31: Shell; 32: Main board; 4: First fluid distribution manifold; 40: First joint; 5: First heat sink fin; 6: Second fluid flat tube. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0041] In the description of this embodiment, 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", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this embodiment 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 this embodiment.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this embodiment, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] In this embodiment, unless otherwise specified or limited, the terms "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0044] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0045] The following combination Figures 1-14 (The arrows in the figure represent the direction of fluid transport) A three-medium heat exchanger of the present invention is described. The three-medium heat exchanger includes: a first core 100, a second core 200, a first fluid sub-manifold 4, and a second fluid sub-manifold 3.

[0046] The first core 100 includes: a plurality of integrated flat tubes 1 and a plurality of first heat dissipation fins 5. The integrated flat tubes 1 are integrally formed with first fluid channels 11 and second fluid channels 12; the first heat dissipation fins 5 are fixed to the integrated flat tubes 1 and arranged alternately with the integrated flat tubes 1.

[0047] The second core 200 includes: a plurality of first fluid flat tubes 2 and a plurality of second heat dissipation fins. The first fluid flat tubes 2 are formed with first fluid channels 11; the second heat dissipation fins are fixed to the first fluid flat tubes 2 and arranged alternately with the first fluid flat tubes 2.

[0048] The first fluid channel 11 of the first core 100 is communicated with the first fluid sub-manifold 4 , and the first fluid channel 11 of the second core 200 is communicated with the first fluid sub-manifold 4 ; the second fluid channel 12 is communicated with the second fluid sub-manifold 3 .

[0049] Specifically, the first core 100 is a three-medium core. The first and second fluid channels 11, 12 are preferably integrally extruded and each carries two different heat exchange media. For example, the first fluid channel 11 is a refrigerant channel, and the second fluid channel 12 is a coolant channel. Each channel exchanges heat with the external environment through the first heat sink fins 5. The first heat sink fins 5 and the integrated flat tubes 1 can be secured by welding or integral molding. The staggered arrangement of the first heat sink fins 5 and the integrated flat tubes 1 improves the heat exchange efficiency between the medium within the integrated flat tubes 1 and the external environment.

[0050] The second core 200 is a dual-medium core. A heat exchange medium is introduced into the first fluid channels 11 of the first fluid flat tubes 2, exchanging heat with the external environment through the second heat sink fins. The first fluid channels 11 of the second core 200 are identical to the first fluid channels 11 of the first core 100, with one portion belonging to the first core 100 and the other to the second core 200. Both channels carry the same heat exchange medium, such as refrigerant. The second heat sink fins and the first fluid flat tubes 2 can be secured together by welding or integral molding. The staggered arrangement of the second heat sink fins and the first fluid flat tubes 2 improves the heat exchange efficiency between the medium within the first fluid flat tubes 2 and the external environment.

[0051] The first fluid manifold 4 and the second fluid manifold 3 are used to input and discharge heat exchange medium to the first core 100 and the second core 200, ensuring the circulation of the heat exchange medium inside the first core 100 and the second core 200. Specifically, the first fluid manifold 4 and the second fluid manifold 3 are provided on both sides of the first core 100 and the second core 200, one for inputting heat exchange medium and the other for discharging heat exchange medium. The medium inputted and discharged by the first fluid manifold 4 is refrigerant, and the medium inputted and discharged by the second fluid manifold 3 is coolant. Since the first fluid channel 11 of the first core 100 and the second core 200 is the same fluid channel, its two ends are respectively connected to the inlet and outlet of the first fluid manifold 4; and the two ends of the second fluid channel 12 are respectively connected to the inlet and outlet of the second fluid manifold 3.

[0052] Preferably, the first fluid sub-manifold 4 is provided with a first joint 40, and the second fluid sub-manifold 3 is provided with a second joint 30; the second fluid sub-manifold 3 can be composed of a main board 32 and a shell 31, and the main board 32 is installed on one side of the first fluid channel 11 and is connected to the shell 31 by plugging, clamping or welding.

[0053] Preferably, the second fluid channels 12 at both ends of the integrated flat tube 1 are flattened. A portion of the outer tube wall 10 of the second fluid channels 12 at both sides of the integrated flat tube 1 can be flattened by machining.

[0054] It can be seen that the present application adopts an integrated molding processing technology to realize the preparation of the integrated flat tube 1, replacing the process of applying solder, bundling and brazing when two layers of independent flat tubes are bonded together in the existing technology, thereby improving the installation efficiency; the two fluids of the integrated flat tube 1 only have thin tube walls to conduct heat, and compared with the heat conduction method of tube wall-solder layer-tube wall when independent flat tubes are bonded together, the heat exchange efficiency is higher; on the other hand, the proportion of flat tubes on the windward side is reduced, the area of ​​the fins can be increased, and the heat exchange efficiency between the heat exchange medium and the external environment can be further improved. For large cooling capacity systems, the volume of the heat exchanger can be reduced, thereby reducing production costs.

[0055] Preferably, the integrated flat tube 1 and the first fluid flat tube 2 belong to the flat tube structure in the first core 100 and the second core 200 respectively. Except for sharing the manifold of the same flow channel, the two flat tubes are independent and not attached to each other on the heat exchanger, and belong to different cores.

[0056] Optionally, the thicknesses of the integrated flat tube 1 and the first fluid flat tube 2 may be the same or different, so as to adapt to the size of the opening when punching the first fluid distribution and collection pipe 4 .

[0057] The present invention provides a three-medium heat exchanger, which includes: a first core 100, a second core 200, a first fluid sub-manifold 4, and a second fluid sub-manifold 3. The first core 100 includes: a plurality of integrated flat tubes 1 and a plurality of first heat dissipation fins 5. The integrated flat tubes 1 are integrally formed with a first fluid channel 11 and a second fluid channel 12; the first heat dissipation fins 5 are fixed to the integrated flat tubes 1 and arranged alternately with the integrated flat tubes 1. The second core 200 includes: a plurality of first fluid flat tubes 2 and a plurality of second heat dissipation fins. The first fluid flat tubes 2 are formed with first fluid channels 11; the second heat dissipation fins are fixed to the first fluid flat tubes 2 and arranged alternately with the first fluid flat tubes 2. The first fluid channel 11 of the first core 100 is connected to the first fluid sub-manifold 4, and the first fluid channel 11 of the second core 200 is connected to the first fluid sub-manifold 4; the second fluid channel 12 is connected to the second fluid sub-manifold 3. The present invention provides a three-medium heat exchanger, which adopts an integrated molding processing technology to realize the preparation of an integrated flat tube 1, replacing the process of applying solder, bundling and brazing when two layers of independent flat tubes are bonded together in the prior art, thereby improving installation efficiency; the two fluids in the integrated flat tube 1 only have thin tube walls to conduct heat, and the heat exchange efficiency is higher than the heat conduction method of tube wall-solder layer-tube wall when independent flat tubes are bonded together; on the other hand, the proportion of the flat tube area on the windward side is reduced, the area of ​​the fins can be increased, and the heat exchange efficiency between the heat exchange medium and the external environment can be further improved. For large cooling capacity systems, the volume of the heat exchanger can be reduced, thereby reducing production costs.

[0058] In one embodiment of the present invention, the three-medium heat exchanger further includes: a third core, which is arranged adjacent to the first core 100 or the second core 200. Furthermore, the third core includes: a plurality of second fluid flat tubes 6 and a plurality of third heat dissipation fins. The second fluid flat tubes 6 form a second fluid channel 12; the third heat dissipation fins are fixed to the second fluid channel 12 and arranged alternately with the second fluid channel 12; and the second fluid channel 12 of the third core is connected to the second fluid manifold 3. The third core provided in this embodiment includes a plurality of second fluid flat tubes 6 and a plurality of third heat dissipation fins, and the second fluid channel 12 of the third core is the same fluid channel as the second fluid channel 12 of the first core 100, except that a portion belongs to the fluid channel of the third core and the other portion belongs to the fluid channel of the first core 100, and the same heat exchange medium, such as coolant or water, flows through them.

[0059] Furthermore, the second fluid flat tubes 6 and the third heat dissipation fins can be fixed by mutual welding or integral molding; the second fluid flat tubes 6 and the third heat dissipation fins are staggered to improve the heat exchange efficiency between the second fluid flat tubes 6 and the external environment.

[0060] Optionally, the first, second, and third heat sinks 5 may be of the same or different specifications. Preferably, the heat sinks are of the same specifications, but are mounted in different positions. Therefore, the structures of the second and third heat sinks are not shown in the accompanying figures; the structure of the first heat sink 5 is referenced. The third core is similar in structure to the second core 200, except that different fluid channels are used. Therefore, the structure of the third core is not shown in the accompanying figures; the structure of the second core 200 is referenced.

[0061] In one embodiment of the present invention, the second fluid sub-manifold 3 has a first arc-shaped structure facing the second fluid channel 12; the first fluid sub-manifold 4 is located on the side of the first arc-shaped structure away from the second fluid channel 12. Figure 1 、 2 In the structures shown in , 10, and 11, a first arc-shaped structure is formed on the shell 31, and the first arc-shaped structure is an inward-concave arc-shaped structure. The first fluid sub-manifold 4 is located on the outside of the first arc-shaped structure. The first fluid sub-manifold 4 can be in contact with the first arc-shaped structure and welded and fixed to each other, or the first fluid sub-manifold 4 can be separated from the first arc-shaped structure and have a certain distance between them.

[0062] In one embodiment of the present invention, the second fluid manifold 3 is formed with a plurality of through holes, and the first fluid manifold 4 is connected to the first fluid channel 11 through the through holes. Figure 11As shown, in the embodiment where the first fluid sub-manifold 4 is in contact with the first arc-shaped structure and welded to each other, a plurality of slit-type through-holes are machined on the second fluid sub-manifold 3 so that the first fluid sub-manifold 4 communicates with the first fluid channel 11 through the slit-type through-holes. Preferably, the first fluid sub-manifold 4 is also machined with corresponding slit-type through-holes to achieve communication between the first fluid sub-manifold 4 and the corresponding first fluid channel 11.

[0063] In one embodiment of the present invention, the second fluid sub-manifold 3 has a second arc-shaped structure facing away from the second fluid channel 12; the first fluid sub-manifold 4 is fixed on the side of the second arc-shaped structure close to the second fluid channel 12. Figure 12 and 13 In the structure shown, a second arc structure is formed on the shell 31, and the second arc structure is an outwardly convex arc structure. The first fluid sub-manifold 4 is located on the inner side of the second arc structure. The first fluid sub-manifold 4 can contact the second arc structure and be welded and fixed to each other.

[0064] In one embodiment of the present invention, the second fluid manifold 3 has a flat plate structure perpendicular to the second fluid channel 12. The first fluid manifold 4 and the second fluid manifold 3 share a portion of the flat plate structure, each forming a closed structure. Specifically, the first fluid manifold 4 and the second fluid manifold 3 can be located on either side of the flat plate structure, or on the same side of the flat plate structure. Figure 14 In the illustrated embodiment, the shells 31 of the second fluid sub-manifold 3 are located on the left and right sides of the flat plate structure, respectively, and the first fluid sub-manifold 4 is located outside the flat plate structure.

[0065] The first arc structure and the second arc structure in the above embodiment provide a certain support function for the first fluid sub-manifold 4 and are installed by contact welding or separate fixing.

[0066] The present invention also provides a method for processing a three-medium heat exchanger. The processing method is used to process the three-medium heat exchanger in the above embodiment of the present invention, and the specific steps include: S1. Hot casting and extrusion: After the aluminum ingot is melted, it is poured into the first set of flat tube molds or extruded into the first set of flat tube molds; S2, cooling and demoulding: The double-row microchannel heat exchange flat tube is processed through the first flat tube mold to form the first fluid channel 11 and the second fluid channel 12 of the integrated flat tube 1.

[0067] S3, machining: flattening a portion of the outer tube wall 10 of the second fluid channel 12 on both sides of the integrated flat tube 1.

[0068] The present invention provides a method for processing a three-medium heat exchanger, which sequentially uses the steps of hot casting and extrusion, cooling and demolding, and mechanical processing to process the three-medium heat exchanger, thereby replacing the fixing methods of applying solder, bundling and brazing in the prior art, and has the same advantages as above.

[0069] In one embodiment of the present invention, after the machining step, that is, after step S3, the following step is further included: S4, a cold extrusion molding process: the tube wall 10 near the first fluid channel 11 on both sides of the integrated flat tube 1 is extruded through a second flat tube die to form arc-shaped corners.

[0070] In one embodiment of the present invention, after the cooling and demolding steps, that is, after step S2, the process further includes: machining the outer wall of the integrated flat tube 1 to integrally form the first heat dissipating fins 5 with the integrated flat tube 1, thereby forming a wing-shaped fin structure. This step completes the integral formation of the integrated flat tube 1 and the first heat dissipating fins 5.

[0071] In one embodiment of the present invention, after the cooling and demolding steps, that is, after step S2, the process further includes forming internal rib structures on the tube wall 10 and each hydraulic channel of the integrated flat tube 1 by providing grooves within the first set of flat tube molds. This step allows for the processing of the internal rib structures within each fluid channel, thereby improving their support performance.

[0072] The present invention further provides a thermal management system, which includes: the three-medium heat exchanger in the above embodiment of the present invention.

[0073] The thermal management system provided by the present invention, which includes the three-medium heat exchanger described in the above-mentioned embodiment of the present invention, has the same advantages as described above. This thermal management system can utilize the efficient heat exchange characteristics of the three-medium heat exchanger of the present invention to replace existing radiators and condensers, meeting the heat dissipation requirements of the motor, battery, and passenger compartment. It can also simultaneously utilize coolant and air for rapid heat dissipation, meeting the heat dissipation requirements of rapid cabin cooling and high-temperature rapid battery charging.

[0074] In one embodiment of the present invention, the aforementioned thermal management system is applied to an automotive system, comprising an off-board radiator and an off-board condenser. The three-medium heat exchanger in this embodiment can meet one or more of the following heat dissipation requirements: motor cooling, battery cooling, and passenger compartment cooling. Furthermore, it can simultaneously utilize coolant and air for rapid heat dissipation, meeting the cooling needs of scenarios such as rapid cabin cooling and high-temperature rapid battery charging.

[0075] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those of ordinary skill in the art can understand and implement the present invention without inventive effort.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A three-medium heat exchanger, characterized in that: include: The first core (100) comprises: A plurality of integrated flat tubes (1), formed integrally from a first fluid channel (11) and a second fluid channel (12); A plurality of first heat dissipation fins (5) are fixed on the integrated flat tube (1) and arranged in a staggered manner with the integrated flat tube (1); The second core (200) comprises: A plurality of first fluid flat tubes (2) forming the first fluid channels (11); A plurality of second heat dissipation fins are fixed on the first fluid flat tube (2) and arranged in a staggered manner with the first fluid flat tube (2); a first fluid distribution manifold (4), wherein the first fluid channel (11) of the first core (100) is in communication with the first fluid distribution manifold (4), and the first fluid channel (11) of the second core (200) is in communication with the first fluid distribution manifold (4); A second fluid distribution manifold (3), wherein the second fluid channel (12) is in communication with the second fluid distribution manifold (3).

2. The three-medium heat exchanger according to claim 1, characterized in that: Also includes: a third core, the third core being arranged adjacent to the first core (100) or the second core (200); The third core comprises: A plurality of second fluid flat tubes (6) forming the second fluid channel (12); A plurality of third heat dissipation fins are fixed on the second fluid channel (12) and arranged in a staggered manner with the second fluid channel (12); the second fluid channel (12) of the third core is connected to the second fluid distribution manifold (3).

3. The three-medium heat exchanger according to claim 1 or 2, characterized in that: The second fluid distribution manifold (3) has a first arc-shaped structure facing toward the second fluid channel (12); The first fluid distribution manifold (4) is located on a side of the first arc-shaped structure that is away from the second fluid channel (12).

4. The three-medium heat exchanger according to claim 3, characterized in that: The second fluid distribution manifold (3) is formed with a plurality of through holes, and the first fluid distribution manifold (4) is connected to the first fluid channel (11) through the through holes.

5. The three-medium heat exchanger according to claim 1 or 2, characterized in that: The second fluid distribution manifold (3) has a second arc-shaped structure facing away from the second fluid channel (12); The first fluid distribution manifold (4) is fixed on a side of the second arc-shaped structure close to the second fluid channel (12).

6. The three-medium heat exchanger according to claim 1 or 2, characterized in that: The second fluid distribution manifold (3) has a flat plate structure perpendicular to the second fluid channel (12); The first fluid distribution manifold (4) and the second fluid distribution manifold (3) share the flat plate structure portion, and each forms a closed structure as a whole.

7. A processing method for a three-medium heat exchanger, characterized in that: Used for manufacturing the three-medium heat exchanger according to any one of claims 1 to 6, comprising: Hot casting and extrusion: After the aluminum ingot is melted, it is poured into the first set of flat tube dies or extruded into the first set of flat tube dies; Cooling and demoulding: The double-row microchannel heat exchange flat tube is processed through the first set of flat tube molds to form a first fluid channel (11) and a second fluid channel (12) of the integrated flat tube (1).

8. The processing method of the three-medium heat exchanger according to claim 7, characterized in that: After the cooling and demoulding steps, it also includes: Machining: Flattening a portion of the outer tube wall (10) of the second fluid channel (12) on both sides of the integrated flat tube (1).

9. The processing method of the three-medium heat exchanger according to claim 7 or 8, characterized in that: After the cooling and demoulding steps, it also includes: By machining the outer wall of the integrated flat tube (1), the first heat dissipation fin (5) and the integrated flat tube (1) are integrally formed to form a flying wing-shaped fin structure.

10. A thermal management system, characterized in that: include: The three-medium heat exchanger according to any one of claims 1 to 6.

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