A combined heat exchanger

Abstract

The utility model relates to a car cooling device discloses a combined heat exchanger, including first heat exchange module (1) and at least one second heat exchange module (2) of setting on first heat exchange module (1) in conjunction, the first heat exchange module (1) inside has the first working medium, the second heat exchange module (2) inside has the second working medium, the second heat exchange module (2) is detachably connected with first heat exchange module (1) and carries out heat exchange with first heat exchange module (1), a combined heat exchanger of the utility model, user can change second heat exchange module (2) on first heat exchange module (1) freely according to the demand, need not to carry out special customization, and can carry out individual replacement and maintenance to each second heat exchange module (2). In this way, both heat exchange function of heat exchanger can be realized, and production cost and the cost of later maintenance can be reduced.

Description

Technical Field

[0001] This utility model relates to automotive cooling devices, and more particularly to a combined heat exchanger. Background Technology

[0002] The main components of a hydrogen fuel cell vehicle include the drive motor, the power battery, and the hydrogen fuel cell. These components all require heat dissipation during operation to ensure stable performance. Taking the power battery's cooling system as an example... Figure 1 As shown, it mainly includes an air conditioning refrigeration system 20 and a cooling water circulation system 22 built into the power battery 21. A radiator 23 is connected in series on the cooling water circulation system 22. An evaporator 24 coupled to the radiator 23 is provided on the air conditioning refrigeration system 20. When the evaporator 24 exchanges heat with the radiator 23, the temperature of the cooling water circulation system 22 can be reduced, thereby cooling down the power battery 21.

[0003] In the aforementioned heat dissipation system, the radiator 23 and evaporator 24 are usually designed as an integrated heat exchanger. This not only results in high production costs, but also requires the entire system to be replaced or repaired when the radiator 23 or evaporator 24 within the heat exchanger fails, significantly increasing subsequent maintenance costs. Therefore, further improvements are needed. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a modular heat exchanger that allows for the free combination of a second heat exchange module on a first heat exchange module as needed. It also allows for the individual replacement or repair of either the first or second heat exchange module, thereby effectively reducing production costs and subsequent maintenance costs.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0006] A combined heat exchanger includes a first heat exchange module and at least one second heat exchange module attached to the first heat exchange module. A first working medium flows through the first heat exchange module, and a second working medium flows through the second heat exchange module. The second heat exchange module is detachably connected to the first heat exchange module and exchanges heat with the first heat exchange module.

[0007] Using the above solution, users can freely replace the second heat exchange module on the first heat exchange module as needed without special customization, and each second heat exchange module can be replaced and repaired individually. This achieves the heat exchanger's function while reducing production and maintenance costs.

[0008] Preferably, the first heat exchange module includes a first inlet manifold and a first outlet manifold arranged in parallel. Both ends of the first inlet manifold and the first outlet manifold are closed. The first inlet manifold is provided with a first inlet for inputting the first working medium, and the first outlet manifold is provided with a first outlet for outputting the first working medium. At least one first guide pipe for conducting the first working medium is connected between the first inlet manifold and the first outlet manifold.

[0009] Using the above scheme, the first inlet manifold can collect the first working medium entering the first heat exchange module, and then conduct the first working medium to the first outlet manifold through the first guide pipe for collection, and then discharge the first working medium through the first outlet and circulate it back to the first inlet, thereby forming a circulation of the first working medium. In this process, the first guide pipe can increase the heat exchange area, thereby improving the heat exchange performance of the first heat exchange module.

[0010] Preferably, the second heat exchange module includes a second inlet manifold and a second outlet manifold arranged in parallel. Both ends of the second inlet manifold and the second outlet manifold are closed. The second inlet manifold is provided with a second inlet for inputting the second working medium, and the second outlet manifold is provided with a second outlet for outputting the second working medium. At least one second guide pipe for conducting the second working medium is connected between the second inlet manifold and the second outlet manifold.

[0011] Using the above scheme, the second inlet manifold can collect the second working medium entering the second heat exchange module, then conduct the second working medium to the second outlet manifold through the second guide pipe for collection, and finally discharge the second working medium through the second outlet, circulating it back to the second inlet, thus forming a circulation of the second working medium. During this process, the second guide pipe can increase the heat exchange area, thereby improving the heat exchange performance of the second heat exchange module.

[0012] Preferably, the second inlet manifold is attached to the first inlet manifold for heat exchange, and the second outlet manifold is attached to the first outlet manifold for heat exchange.

[0013] By adopting the above scheme, the close fit between the second inlet manifold and the first inlet manifold, and between the second outlet manifold and the first outlet manifold, can effectively increase the contact area between the first heat exchange module and the second heat exchange module, thereby further improving the heat exchange performance.

[0014] Preferably, the opposite surfaces of the second inlet manifold and the first inlet manifold are provided with first heat-conducting teeth that interlock to conduct heat, and the opposite surfaces of the second outlet manifold and the first outlet manifold are provided with second heat-conducting teeth that interlock to conduct heat.

[0015] By employing the above scheme, the first and second heat-conducting teeth can respectively prevent positional misalignment between the second inlet manifold and the first inlet manifold, and between the second outlet manifold and the first outlet manifold, thereby effectively improving the connection stability between the second heat exchange module and the first heat exchange module. Simultaneously, the toothed fit increases the heat exchange area between the first and second inlet manifolds and between the first and second outlet manifolds, thereby further enhancing the heat exchanger's performance.

[0016] Preferably, a first heat-conducting fin is provided between adjacent first guide tubes to exchange heat with the first guide tube.

[0017] Using the above solution, the first heat-conducting fins can conduct heat out of the first guide tube and have a large heat dissipation area. Combined with the cooling fan, it can effectively improve heat dissipation performance.

[0018] Preferably, a second heat-conducting fin is provided between adjacent second guide tubes to exchange heat with the second guide tubes.

[0019] Using the above solution, the second heat-conducting fins can conduct heat out of the second guide tube and have a large heat dissipation area. Combined with the cooling fan, it can effectively improve heat dissipation performance.

[0020] Preferably, the second guide tube is positioned opposite the first guide tube.

[0021] Preferably, the second heat-conducting fin is positioned opposite the first heat-conducting fin.

[0022] By adopting the above solution, air can pass through the heat exchanger more smoothly, further improving heat dissipation performance.

[0023] Preferably, the first heat exchange module is provided with a first lug on both sides, and the second heat exchange module is provided with a second lug on both sides. The first lug and the second lug are arranged opposite to each other and are fixed by a bolt assembly.

[0024] By adopting the above scheme, the first heat exchange module and the second heat exchange module can be stably connected together, thereby improving the structural stability of the entire heat exchanger.

[0025] This invention, by adopting the above technical solution, has significant technical advantages: users can freely replace the second heat exchange module on the first heat exchange module according to their needs without special customization, and each second heat exchange module can be replaced and repaired individually. This achieves the heat exchange function of the heat exchanger while reducing production and maintenance costs. Attached Figure Description

[0026] Figure 1This is a schematic diagram of a heat dissipation system used in power batteries in the prior art;

[0027] Figure 2 This is a schematic diagram of the structure of this embodiment. Figure 1 ;

[0028] Figure 3 This is a schematic diagram of the structure of this embodiment. Figure 2 ;

[0029] Figure 4 for Figure 3 An enlarged schematic diagram of part A shown;

[0030] Figure 5 This is a schematic diagram of the structure of the first heat exchange module and a schematic diagram of the flow direction of the first working medium inside it in this embodiment;

[0031] Figure 6 This is a schematic diagram of the structure of the second heat exchange module and a schematic diagram of the flow direction of the second working medium inside it in this embodiment.

[0032] The parts referred to by the numbers in the above attached figures are as follows: 1. First heat exchange module; 2. Second heat exchange module; 3. First inlet manifold; 4. First outlet manifold; 5. First inlet; 6. First outlet; 7. First guide pipe; 8. Second inlet manifold; 9. Second outlet manifold; 10. Second inlet; 11. Second outlet; 12. Second guide pipe; 13. First heat-conducting tooth; 14. Second heat-conducting tooth; 15. First heat-conducting fin; 16. Second heat-conducting fin; 17. First support lug; 18. Second support lug; 19. Bolt assembly; 20. Air conditioning refrigeration system; 21. Power battery; 22. Cooling water circulation system; 23. Radiator; 24. Evaporator. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0034] like Figures 2 to 6 As shown, this embodiment discloses a combined heat exchanger, including a first heat exchange module 1 and at least one second heat exchange module 2 attached to the first heat exchange module 1. If multiple second heat exchange modules 2 are provided, they can be arranged laterally or longitudinally on the front or back of the first heat exchange module 1. In this embodiment, the first heat exchange module 1 and the second heat exchange module 2 can be used as heat exchange devices such as radiators, evaporators, condensers, and generators, respectively, without limitation. A first working medium flows inside the first heat exchange module 1, and a second working medium flows inside the second heat exchange module 2. The first and second working media are fluid heat exchange media, including but not limited to antifreeze, Freon, pure water, and ammonia. The second heat exchange module 2 is detachably connected to the first heat exchange module 1 and exchanges heat with the first heat exchange module 1.

[0035] Specifically, the first heat exchange module 1 includes a first inlet manifold 3 and a first outlet manifold 4 arranged in parallel. Both ends of the first inlet manifold 3 and the first outlet manifold 4 are closed. The first inlet manifold 3 is provided with a first inlet 5 for inputting the first working medium, and the first outlet manifold 4 is provided with a first outlet 6 for outputting the first working medium. At least one first guide pipe 7 for conducting the first working medium is connected between the first inlet manifold 3 and the first outlet manifold 4. The first guide pipe 7 is vertically connected between the first inlet manifold 3 and the first outlet manifold 4, so that the transmission of the first working medium is smoother.

[0036] Correspondingly, the second heat exchange module 2 includes a second inlet manifold 8 and a second outlet manifold 9 arranged in parallel. Both ends of the second inlet manifold 8 and the second outlet manifold 9 are closed. The second inlet manifold 8 is provided with a second inlet 10 for inputting the second working medium, and the second outlet manifold 9 is provided with a second outlet 11 for outputting the second working medium. At least one second guide pipe 12 for conducting the second working medium is connected between the second inlet manifold 8 and the second outlet manifold 9. The second guide pipe 12 is vertically connected between the second inlet manifold 8 and the second outlet manifold 9, thereby making the transmission of the second working medium smoother.

[0037] To achieve efficient heat exchange between the first heat exchange module 1 and the second heat exchange module 2, both the first inlet manifold 3 and the second inlet manifold 8 are square tubes, and they are fitted together in parallel. Similarly, the first outlet manifold 4 and the second outlet manifold 9 are also square tubes, and they are fitted together in parallel. This effectively increases the heat exchange area between the first heat exchange module 1 and the second heat exchange module 2, thereby improving the heat exchange efficiency between them.

[0038] To further improve the heat exchange efficiency of the heat exchanger, the opposing surfaces of the second inlet manifold 8 and the first inlet manifold 3 are each provided with interlocking first heat-conducting teeth 13 for heat conduction. Two rows of first heat-conducting teeth 13 are arranged along the length of the second inlet manifold 8 and the first inlet manifold 3, respectively. Correspondingly, the opposing surfaces of the second outlet manifold 9 and the first outlet manifold 4 are each provided with interlocking second heat-conducting teeth 14 for heat conduction. Two rows of second heat-conducting teeth 14 are arranged along the length of the second outlet manifold 9 and the first outlet manifold 4, respectively. To improve the heat transfer efficiency between the teeth, thermal grease can be applied to the interlocking first heat-conducting teeth 13 and second heat-conducting teeth 14.

[0039] To improve the heat dissipation efficiency of the first guide pipe 7 and the second guide pipe 12, a first heat-conducting fin 15 is provided between adjacent first guide pipes 7 for heat exchange. The first heat-conducting fin 15 is preferably a long, corrugated metal strip, with its crests and troughs welded between two adjacent first guide pipes 7. The cross-section of the first guide pipe 7 is elliptical, with its wider side fixed to the first heat-conducting fin 15 to increase the contact area and thus improve heat exchange efficiency.

[0040] Correspondingly, a second heat-conducting fin 16 is provided between adjacent second guide pipes 12 for heat exchange with the second guide pipes 12. The second heat-conducting fin 16 is preferably a long, corrugated metal sheet, with its crests and troughs welded between two adjacent second guide pipes 12. The cross-section of the second guide pipe 12 is elliptical, with its wider side fixed to the second heat-conducting fin 16 to increase the contact area and thus improve the heat exchange efficiency.

[0041] To facilitate airflow through the heat exchanger and further improve heat exchange efficiency, several second guide pipes 12 are positioned one-to-one with several first guide pipes 7, and several second heat-conducting fins 16 are positioned one-to-one with several first heat-conducting fins 15, in order to reduce airflow obstruction, improve air circulation, and thus further enhance the heat dissipation performance of the heat exchanger.

[0042] To improve the efficiency and convenience of disassembling and assembling the first heat exchange module 1 and the second heat exchange module 2, the first heat exchange module 1 is provided with a first support ear 17 on both sides, and the second heat exchange module 2 is provided with a second support ear 18 on both sides. The first support ear 17 and the second support ear 18 are arranged opposite to each other and are fixed by bolt assembly 19, thereby improving the connection stability between the first heat exchange module 1 and the second heat exchange module 2.

[0043] The specific working principle is as follows:

[0044] When assembling the heat exchanger, first arrange the required number of second heat exchange modules 2 on the heat exchange surface of the first heat exchange module 1, so that the second inlet manifold 8 can be parallel to the outside of the first inlet manifold 3 through the first heat-conducting teeth 13 (thermal grease needs to be applied before the two rows of first heat-conducting teeth 13 are connected), and at the same time, allow the second outlet manifold 9 to be parallel to the outside of the first outlet manifold 4 through the second heat-conducting teeth 14 (thermal grease needs to be applied before the two rows of second heat-conducting teeth 14 are connected). At this time, the second ears 18 on both sides of the second heat exchange module 2 can be directly opposite the first ears 17 on both sides of the first heat exchange module 1. The first ears 17 and the second ears 18 are fixed by the bolt assembly 19, thus completing the assembly of the second heat exchange module 2 and the first heat exchange module 1.

[0045] After the first heat exchange module 1 and the second heat exchange module 2 are assembled, they form a complete heat exchanger. At this time, coolant circulation devices (not shown) are connected between the first inlet 5 and the first outlet 6, and between the second inlet 10 and the second outlet 11, respectively, so that the first working medium and the second working medium are respectively introduced into the first heat exchange module 1 and the second heat exchange module 2 through the first inlet 5 and the second inlet 10. After the first working medium fills the entire first inlet manifold 3, it is transmitted to the first outlet manifold 4 through multiple first guide pipes 7, and then flows back to the first inlet 5 through the first outlet 6, thereby forming a medium circulation. After the second working medium fills the entire second inlet manifold 8, it is transmitted to the second outlet manifold 9 through multiple second guide pipes 12, and then flows back to the second inlet 10 through the second outlet 11, thereby forming a medium circulation. During this process, the first inlet manifold 3 exchanges heat with the second inlet manifold 8 through the first heat-conducting teeth 13, the first outlet manifold 4 exchanges heat with the second outlet manifold 9 through the second heat-conducting teeth 14, the first heat-conducting fins 15 exchange heat with the first guide pipes 7 on both sides, and the second heat-conducting fins 16 exchange heat with the second guide pipes 12 on both sides. Simultaneously, air can pass through the gaps between adjacent first guide pipes 7 and adjacent second guide pipes 12, as well as the gaps within the first and second heat-conducting fins 15 and 16, to increase airflow and improve heat dissipation performance. Combining this with a cooling fan (not shown) can further enhance the heat exchanger's performance.

[0046] When either the first heat exchange module 1 or the second heat exchange module 2 malfunctions, first remove the bolt assembly 19 to release the locking between the first lug 17 and the second lug 18. At this point, either the first heat exchange module 1 or the second heat exchange module 2 can be replaced or repaired individually, thereby reducing maintenance costs and difficulty. After the first heat exchange module 1 or the second heat exchange module 2 has been replaced or repaired, it can be reassembled.

Claims

1. A combined heat exchanger, characterized in that: It includes a first heat exchange module (1) and at least one second heat exchange module (2) attached to the first heat exchange module (1). A first working medium flows in the first heat exchange module (1), and a second working medium flows in the second heat exchange module (2). The second heat exchange module (2) is detachably connected to the first heat exchange module (1) and exchanges heat with the first heat exchange module (1).

2. The combined heat exchanger according to claim 1, characterized in that: The first heat exchange module (1) includes a first inlet manifold (3) and a first outlet manifold (4) arranged in parallel. Both ends of the first inlet manifold (3) and the first outlet manifold (4) are closed. The first inlet manifold (3) is provided with a first inlet (5) for inputting the first working medium, and the first outlet manifold (4) is provided with a first outlet (6) for outputting the first working medium. At least one first guide pipe (7) for conducting the first working medium is connected between the first inlet manifold (3) and the first outlet manifold (4).

3. A combined heat exchanger according to claim 2, characterized in that: The second heat exchange module (2) includes a second inlet manifold (8) and a second outlet manifold (9) arranged in parallel. Both ends of the second inlet manifold (8) and the second outlet manifold (9) are closed. The second inlet manifold (8) is provided with a second inlet (10) for inputting the second working medium, and the second outlet manifold (9) is provided with a second outlet (11) for outputting the second working medium. At least one second guide pipe (12) for conducting the second working medium is connected between the second inlet manifold (8) and the second outlet manifold (9).

4. A combined heat exchanger according to claim 3, characterized in that: The second inlet manifold (8) is attached to the first inlet manifold (3) for heat exchange, and the second outlet manifold (9) is attached to the first outlet manifold (4) for heat exchange.

5. A combined heat exchanger according to claim 4, characterized in that: The second inlet manifold (8) and the first inlet manifold (3) are provided with first heat-conducting teeth (13) that interlock with each other to conduct heat, and the second outlet manifold (9) and the first outlet manifold (4) are provided with second heat-conducting teeth (14) that interlock with each other to conduct heat.

6. A combined heat exchanger according to claim 2, characterized in that: A first heat-conducting fin (15) is provided between adjacent first guide pipes (7) to exchange heat with the first guide pipe (7).

7. A combined heat exchanger according to claim 3, characterized in that: A second heat-conducting fin (16) is provided between adjacent second guide pipes (12) to exchange heat with the second guide pipes (12).

8. A combined heat exchanger according to claim 3, characterized in that: The second guide tube (12) is opposite to the first guide tube (7) one by one.

9. A combined heat exchanger according to claim 7, characterized in that: The second heat-conducting fin (16) is opposite to the first heat-conducting fin (15).

10. A combined heat exchanger according to any one of claims 1 to 9, characterized in that: The first heat exchange module (1) has a first ear (17) on both sides, and the second heat exchange module (2) has a second ear (18) on both sides. The first ear (17) and the second ear (18) are arranged opposite to each other and are fixed by bolt assembly (19).

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