An integrated thermal management structure for a plate heat exchanger and a compressor

Abstract

The utility model discloses an integrated heat management structure of plate heat exchanger and compressor, including plate heat exchanger and compressor body, its characterized in that: still include direct connection structure, be equipped with high pressure cover on the compressor body, and the high pressure cover is opened and is communicated to the exhaust port of refrigerant cavity in the compressor body inside, the gaseous refrigerant inlet of plate heat exchanger is matched with the exhaust port of high pressure cover, and the gaseous refrigerant inlet of plate heat exchanger is fixedly connected with the exhaust port of high pressure cover through direct connection structure. This integrated heat management structure can reduce the refrigerant leakage risk, improve the heat exchange efficiency, reduce the volume, and the dismounting and maintenance are convenient, effectively adapt to the demand of new energy automobile.

Description

Technical Field

[0001] This utility model relates to vehicle thermal management technology, and in particular to an integrated thermal management structure of a plate heat exchanger and a compressor. Background Technology

[0002] As new energy vehicles increasingly demand higher levels of integration, safety, and adaptability to extreme operating conditions in their thermal management systems, the limitations of traditional integrated thermal management structures are becoming more and more apparent, necessitating breakthroughs in performance through innovation in the connection methods of key components.

[0003] In existing integrated thermal management systems, such as Figure 7 As shown, the compressor 10 and plate heat exchanger 11 are generally connected by independent pipes 12. This structure has significant drawbacks: First, redundant connections lead to a high risk of leakage. The extensive use of pipes 12 and joints multiplies the number of system interfaces. Especially for flammable refrigerants such as R290, even a small leak can cause safety hazards, and the traditional structure cannot reduce this risk through the connection method. Second, the integration efficiency is low. The decentralized pipe connection results in a scattered component layout, a larger overall system size, and occupies limited installation space in the vehicle, while also increasing assembly steps and costs. Third, energy transmission loss is high. The pipe 12 connection has flow resistance and heat exchange loss, which prevents the energy output from the compressor 10 from being efficiently transferred to the plate heat exchanger 11, thus limiting thermal management efficiency. Fourth, low-temperature adaptability is poor. The heat loss of the independent pipe 12 exacerbates energy dissipation in low-temperature environments, resulting in insufficient heating capacity of the system. The compressor 10 is prone to overheating protection due to excessive load, making it difficult to operate stably under extreme low-temperature conditions such as -30℃. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an integrated thermal management structure for plate heat exchangers and compressors. This integrated thermal management structure can reduce the risk of refrigerant leakage, improve heat exchange efficiency, reduce volume, and is convenient to disassemble and maintain, effectively meeting the needs of new energy vehicles.

[0005] To solve the above technical problems, the following technical solution is adopted: An integrated thermal management structure for a plate heat exchanger and a compressor includes a plate heat exchanger and a compressor body. The structure is characterized by a direct connection structure. The compressor body has a high-pressure cover with an exhaust port that connects to a refrigerant cavity inside the compressor body. The gaseous refrigerant inlet of the plate heat exchanger matches the exhaust port of the high-pressure cover, and the gaseous refrigerant inlet of the plate heat exchanger is fixedly connected to the exhaust port of the high-pressure cover via the direct connection structure.

[0006] The aforementioned integrated thermal management structure establishes a direct connection between the compressor exhaust port and the gaseous refrigerant inlet of the plate heat exchanger, eliminating the connecting pipes between the two in traditional structures. This allows the compressed, high-temperature, high-pressure refrigerant to directly enter the plate heat exchanger for heat exchange. The entire structure significantly reduces the number of redundant pipes and joints, lowering the risk of leakage from flammable refrigerants such as R290 at the connection source and improving system safety. Furthermore, it shortens the refrigerant transmission path, reducing energy and heat loss caused by flow resistance, improving the heat exchange efficiency of the thermal management system, and exhibiting strong low-temperature adaptability. Simultaneously, it simplifies the overall structural layout, reduces the system's footprint, and is suitable for the compact installation environment of new energy vehicles.

[0007] In a preferred embodiment, the direct connection structure includes a circular convex ring and multiple first locking elements. The circular convex ring is disposed on the outer wall of the plate heat exchanger and is connected to the gaseous refrigerant inlet of the plate heat exchanger. The circular convex ring matches the shape of the exhaust port and is inserted into the exhaust port. The outer wall of the plate heat exchanger is in close contact with the outer wall of the high-pressure cover through the first locking elements. This method forms a dual connection structure of insertion positioning and locking fixation. The insertion fit between the circular convex ring and the exhaust port achieves initial positioning and rapid connection of the passage, improving assembly efficiency. The first locking elements then secure the plate heat exchanger to the outer wall of the high-pressure cover, ensuring that the circular convex ring and the exhaust port always maintain a tight fit. Even under vibration conditions during vehicle operation, structural stability is maintained, preventing leakage gaps due to loosening. The detachable connection method facilitates disassembly and replacement of components during later maintenance.

[0008] In a further preferred embodiment, a first sealing ring is provided between the circular convex ring and the exhaust port. The first sealing ring is in close contact with both the outer circumferential surface of the circular convex ring and the inner wall of the exhaust port. The first sealing ring can block the path of refrigerant leakage from the mating gap between the plate heat exchanger and the high-pressure cover, further improving the sealing performance.

[0009] In a further preferred embodiment, the first locking element is a first bolt. Multiple first through holes are formed on the outer wall of the plate heat exchanger, and multiple first threaded holes corresponding to the first through holes are formed on the outer wall of the high-pressure cover. The number of first bolts, first through holes, and first threaded holes are the same and correspond to each other. The first bolt passes through the corresponding first through hole and is threadedly connected to the first threaded hole. Typically, the first through holes are evenly distributed on the outer wall of the plate heat exchanger. Tightening the first bolts presses the outer wall of the plate heat exchanger against the outer wall of the high-pressure cover, ensuring that the preload between the plate heat exchanger and the high-pressure cover meets the requirements of vibration conditions and preventing loosening after long-term use. The distribution design of multiple bolts balances the contact surface pressure, preventing component deformation caused by localized stress concentration. Simultaneously, the detachable nature of the bolt connection facilitates later maintenance and replacement of the plate heat exchanger or compressor, reducing maintenance costs and operational difficulty.

[0010] In another preferred embodiment, the direct connection structure includes a circular protrusion on the high-pressure cover, a recess on the outer wall of the plate heat exchanger, and multiple second locking elements. The circular protrusion has an exhaust port, and the recess corresponds to the gaseous refrigerant inlet of the plate heat exchanger. The circular protrusion matches the recess, and the high-pressure cover is inserted into the recess via the circular protrusion. The outer wall of the plate heat exchanger is in close contact with the outer wall of the high-pressure cover via the second locking elements. This method also forms a dual connection structure of insertion positioning and locking fixation. The refrigerant channel is connected and structurally positioned through the interlocking of the circular protrusion and the recess. The exhaust port on the circular protrusion directly communicates with the gaseous refrigerant inlet of the plate heat exchanger, and the overall connection strength is reinforced by the second locking elements. The larger contact area of ​​the concave-convex mating part not only improves positioning accuracy but also enhances the torsional resistance of the structure, preventing relative rotation between the plate heat exchanger and the high-pressure cover. The nested structure of the circular protrusion and the concave part also forms a certain radial constraint, reducing the impact of refrigerant pressure on the contact position, extending service life, and ensuring that the overall structure still maintains good assembly convenience, balancing connection reliability and maintenance flexibility. The second locking part ensures that the outer wall of the plate heat exchanger and the outer wall of the high-pressure cover always maintain a tight fit.

[0011] In a further preferred embodiment, a second sealing ring is provided between the circular protrusion and the concave portion, and the second sealing ring is in close contact with the outer peripheral surface of the circular protrusion and the inner wall of the concave portion.

[0012] In a further preferred embodiment, the second locking element is a second bolt. Multiple second through holes are formed on the outer wall of the plate heat exchanger, and multiple second threaded holes corresponding to the second through holes are formed on the outer wall of the high-pressure cover. The number of second bolts, second through holes, and second threaded holes are the same and correspond to each other. The second bolts pass through the corresponding second through holes and are threadedly connected to the second threaded holes. Typically, the second through holes are evenly distributed on the outer wall of the plate heat exchanger.

[0013] In another preferred embodiment, the direct connection structure includes a third sealing ring and multiple third locking elements. The outer wall of the plate heat exchanger is in close contact with the outer wall of the high-pressure cover via the third locking elements, and the gaseous refrigerant inlet of the plate heat exchanger is connected to the exhaust port of the high-pressure cover. The third sealing ring is disposed between the outer wall of the plate heat exchanger and the outer wall of the high-pressure cover, and is in close contact with both the outer wall of the plate heat exchanger and the outer wall of the high-pressure cover. The third sealing ring is also arranged around the outer periphery of the gaseous refrigerant inlet of the plate heat exchanger and the exhaust port of the high-pressure cover. Using this method, the refrigerant channel is connected by directly fitting the outer wall of the plate heat exchanger to the outer wall of the high-pressure cover, and the third sealing ring forms an annular seal between the end faces. The two end faces are then pressed together by the third locking elements. The outer wall fitting structure is the simplest and most compact, requiring no additional circular protrusion ring or circular protrusion structure, which can effectively reduce processing difficulty and processing costs. The third sealing ring surrounds the connection between the gaseous refrigerant inlet and the exhaust port, which can fully cover the leakage risk area and provide a wider sealing range. At the same time, during assembly, only the two ends need to be aligned, making the operation steps simple and significantly improving production assembly efficiency, making it suitable for large-scale mass production scenarios.

[0014] In a further preferred embodiment, the third locking element is a third bolt. Multiple third through holes are formed on the outer wall of the plate heat exchanger, and multiple third threaded holes corresponding to the third through holes are formed on the outer wall of the high-pressure cover. The number of third bolts, third through holes, and third threaded holes are the same and correspond to each other. The third bolt passes through the corresponding third through hole and is threadedly connected to the third threaded hole. Typically, the third through holes are evenly distributed on the outer wall of the plate heat exchanger.

[0015] The beneficial effects of this utility model are as follows: this integrated thermal management structure can reduce the risk of refrigerant leakage, improve heat exchange efficiency, reduce volume, and is convenient to disassemble and maintain, effectively meeting the needs of new energy vehicles. Attached Figure Description

[0016] Figure 1 This is a partial cross-sectional view of the integrated thermal management structure in Embodiment 1 of this utility model; Figure 2 for Figure 1 A magnified view of position A in the middle; Figure 3This is a partial cross-sectional view of the integrated thermal management structure in Embodiment 1 of this utility model; Figure 4 for Figure 3 A magnified view of position B in the middle; Figure 5 This is a partial cross-sectional view of the integrated thermal management structure in Embodiment 1 of this utility model; Figure 6 for Figure 5 A magnified view of position C in the middle; Figure 7 This is a schematic diagram of the connection method between the compressor and the plate heat exchanger in the prior art. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: Example 1, such as Figure 1-2 The integrated thermal management structure of a plate heat exchanger and a compressor shown includes a plate heat exchanger 1, a compressor body 2, and a direct connection structure 3. The compressor body 2 is provided with a high-pressure cover 4, and the high-pressure cover 4 has an exhaust port 401 that connects to the refrigerant cavity inside the compressor body 2. The gaseous refrigerant inlet 101 of the plate heat exchanger 1 matches the exhaust port 401 of the high-pressure cover 4, and the gaseous refrigerant inlet 101 of the plate heat exchanger 1 is fixedly connected to the exhaust port 401 of the high-pressure cover 4 through the direct connection structure 3.

[0018] The aforementioned integrated thermal management structure directly establishes a pathway between the compressor exhaust port 401 and the gaseous refrigerant inlet 101 of the plate heat exchanger 1 through the direct connection structure 3, eliminating the connecting pipeline between the two in the traditional structure. This allows the compressed high-temperature and high-pressure refrigerant to directly enter the plate heat exchanger 1 for heat exchange. On the one hand, the entire structure significantly reduces the number of redundant pipelines and joints, reducing the risk of leakage of flammable refrigerants such as R290 from the connection source and improving system safety. On the other hand, it shortens the refrigerant transmission path, reduces energy loss and heat loss caused by flow resistance, improves the heat exchange efficiency of the thermal management system, has strong low-temperature adaptability, and simplifies the overall structural layout, reduces the system's footprint, and is suitable for the compact installation environment of new energy vehicles.

[0019] The direct connection structure 3 includes a circular convex ring 301 and multiple first locking elements 302. The circular convex ring 301 is disposed on the outer wall of the plate heat exchanger 1 and is connected to the gaseous refrigerant inlet 101 of the plate heat exchanger 1. The shape of the circular convex ring 301 matches that of the exhaust port 401, and the circular convex ring 301 is inserted into the exhaust port 401. The outer wall of the plate heat exchanger 1 is in close contact with the outer wall of the high-pressure cover 4 through the first locking elements 302. In this way, a dual connection structure of insertion positioning and locking fixation can be formed. The initial positioning and rapid connection of the two are achieved by the insertion of the circular convex ring 301 and the exhaust port 401, which improves the assembly efficiency. Then, the outer wall of the plate heat exchanger 1 and the high pressure cover 4 are fastened by the first locking member 302 to ensure that the circular convex ring 301 and the exhaust port 401 always maintain a tight fit. Even under the vibration condition of vehicle driving, the structural stability can be maintained to prevent leakage gaps caused by loosening. At the same time, the detachable connection method facilitates the disassembly and replacement of components during later maintenance.

[0020] A first sealing ring 5 is provided between the circular convex ring 301 and the exhaust port 401. The first sealing ring 5 is in close contact with the outer peripheral surface of the circular convex ring 301 and the inner wall of the exhaust port 401. The first sealing ring 5 can block the path of refrigerant leakage from the mating gap between the plate heat exchanger 1 and the high-pressure cover 4, thereby further improving the sealing performance.

[0021] The first locking element 302 uses a first bolt. Multiple first through holes are formed on the outer wall of the plate heat exchanger 1, and multiple first threaded holes corresponding to the first through holes are formed on the outer wall of the high-pressure cover 4. The number of first bolts, first through holes, and first threaded holes are the same and correspond to each other. The first bolt passes through the corresponding first through hole and is threaded into the first threaded hole. Typically, the first through holes are evenly distributed on the outer wall of the plate heat exchanger 1. Tightening the first bolts presses the outer wall of the plate heat exchanger 1 against the outer wall of the high-pressure cover 4, ensuring that the preload between the plate heat exchanger 1 and the high-pressure cover 4 meets the requirements of vibration conditions and preventing loosening after long-term use. The distribution design of multiple bolts balances the pressure on the contact surface, preventing component deformation caused by localized stress concentration. Simultaneously, the detachable nature of the bolt connection facilitates later maintenance and replacement of the plate heat exchanger 1 or compressor, reducing maintenance costs and operational difficulty.

[0022] Example 2, the difference between this example and Example 1 is as follows: Figure 3-4As shown, the direct connection structure 3' includes a circular protrusion 301' on the high-pressure cover 4', a recess 302' on the outer wall of the plate heat exchanger 1', and multiple second locking elements 303'. The circular protrusion 301' has an exhaust port 401'. The recess 302' corresponds to the gaseous refrigerant inlet 101' of the plate heat exchanger 1'. The circular protrusion 301' matches the recess 302', and the high-pressure cover 4' is inserted into the recess 302' through the circular protrusion 301'. The outer wall of the plate heat exchanger 1' is in close contact with the outer wall of the high-pressure cover 4' through the second locking elements 303'. In this way, a dual connection structure of insertion positioning and locking fixation can also be formed. The refrigerant channel is connected and positioned structurally through the interlocking of the circular protrusion 301' and the concave portion 302'. The exhaust port 401' on the circular protrusion 301' is directly connected to the gaseous refrigerant inlet 101' of the plate heat exchanger 1', and the overall connection strength is further enhanced by the second locking member 303'. The larger contact area of ​​the interlocking mechanism not only improves the positioning accuracy but also enhances the torsional resistance of the structure, preventing relative rotation between the plate heat exchanger 1' and the high-pressure cover 4'. The nested structure of the circular protrusion 301' and the concave portion 302' also forms a certain radial constraint, reducing the impact of refrigerant pressure on the contact position, extending the service life, and ensuring that the overall structure still maintains good assembly convenience, balancing connection reliability and maintenance flexibility. The second locking member 303' ensures that the outer wall of the plate heat exchanger 1' and the outer wall of the high-pressure cover 4' always maintain a tight fit.

[0023] A second sealing ring 5' is provided between the circular protrusion 301' and the concave portion 302', and the second sealing ring 5' is in close contact with the outer peripheral surface of the circular protrusion 301' and the inner wall of the concave portion 302'.

[0024] The second locking element 303' uses a second bolt. Multiple second through holes are formed on the outer wall of the plate heat exchanger 1', and multiple second threaded holes corresponding to the second through holes are formed on the outer wall of the high-pressure cover 4'. The number of second bolts, second through holes, and second threaded holes are the same and correspond to each other. The second bolts pass through the corresponding second through holes and are threaded into the second threaded holes. Typically, the second through holes are evenly distributed on the outer wall of the plate heat exchanger 1'.

[0025] Example 3, the difference between this example and Example 1 is as follows: Figure 5-6As shown, the direct connection structure 3” includes a third sealing ring 301” and multiple third locking elements 302”. The outer wall of the plate heat exchanger 1” is in close contact with the outer wall of the high-pressure cover 4” through the third locking elements 302”, and the gaseous refrigerant inlet 101” of the plate heat exchanger 1” is connected to the exhaust port 401” of the high-pressure cover 4”. The third sealing ring 301” is disposed between the outer wall of the plate heat exchanger 1” and the outer wall of the high-pressure cover 4”, and the third sealing ring 301” is in close contact with both the outer wall of the plate heat exchanger 1” and the outer wall of the high-pressure cover 4”. The third sealing ring 301” is arranged around the outer periphery of the gaseous refrigerant inlet 101” of the plate heat exchanger 1” and the exhaust port 401” of the high-pressure cover 4”. In this method, the refrigerant channel is connected by directly bonding the outer wall of the plate heat exchanger 1” to the outer wall of the high-pressure cover 4”, and a third sealing ring 301” is used to form an annular seal between the end faces. Then, the two end faces are pressed together by the third locking member 302”. The structure of bonding the outer wall is the simplest and most compact, without the need for additional circular protrusions or circular protrusions, which can effectively reduce the processing difficulty and processing cost. The third sealing ring 301” surrounds the connection between the gaseous refrigerant inlet 101” and the exhaust port 401”, which can fully cover the leakage risk area and provide a wider sealing range. At the same time, only the two end faces need to be aligned during assembly, which simplifies the operation steps and significantly improves the production assembly efficiency, making it suitable for large-scale mass production scenarios.

[0026] The third locking element 302” uses a third bolt. Multiple third through holes are opened on the outer wall of the plate heat exchanger 1”, and multiple third threaded holes corresponding to the third through holes are opened on the outer wall of the high-pressure cover 4”. The number of third bolts, third through holes, and third threaded holes are the same and correspond to each other. The third bolt passes through the corresponding third through hole and is threadedly connected to the third threaded hole. Typically, the third through holes are evenly distributed on the outer wall of the plate heat exchanger 1”.

Claims

1. An integrated thermal management structure for a plate heat exchanger and a compressor, comprising a plate heat exchanger and a compressor body, characterized in that: It also includes a direct connection structure, wherein the compressor body is provided with a high-pressure cover, and the high-pressure cover has an exhaust port that connects to the refrigerant cavity inside the compressor body; the gaseous refrigerant inlet of the plate heat exchanger is matched with the exhaust port of the high-pressure cover, and the gaseous refrigerant inlet of the plate heat exchanger is fixedly connected to the exhaust port of the high-pressure cover through the direct connection structure.

2. The integrated thermal management structure of plate heat exchanger and compressor as described in claim 1, characterized in that: The direct connection structure includes a circular convex ring and multiple first locking elements. The circular convex ring is disposed on the outer wall of the plate heat exchanger and is connected to the gaseous refrigerant inlet of the plate heat exchanger. The circular convex ring matches the shape of the exhaust port and is inserted into the exhaust port. The outer wall of the plate heat exchanger is in close contact with the outer wall of the high-pressure cover through the first locking elements.

3. The integrated thermal management structure of plate heat exchanger and compressor as described in claim 2, characterized in that: A first sealing ring is provided between the circular convex ring and the exhaust port, and the first sealing ring is in close contact with the outer peripheral surface of the circular convex ring and the inner wall of the exhaust port.

4. The integrated thermal management structure of plate heat exchanger and compressor as described in claim 2, characterized in that: The first locking element is a first bolt. The outer wall of the plate heat exchanger has multiple first through holes. The outer wall of the high-pressure cover has multiple first screw holes corresponding to the first through holes. The number of first bolts, first through holes and first screw holes are the same and correspond to each other. The first bolt passes through the corresponding first through hole and is threadedly connected to the first screw hole.

5. The integrated thermal management structure of a plate heat exchanger and compressor as described in claim 1, characterized in that: The direct connection structure includes a circular protrusion on the high-pressure cover, a recess on the outer wall of the plate heat exchanger, and multiple second locking elements. The circular protrusion has an exhaust port, and the recess corresponds to the gaseous refrigerant inlet of the plate heat exchanger. The circular protrusion matches the recess, and the high-pressure cover is inserted into the recess through the circular protrusion. The outer wall of the plate heat exchanger is in close contact with the outer wall of the high-pressure cover through the second locking elements.

6. The integrated thermal management structure of plate heat exchanger and compressor as described in claim 5, characterized in that: A second sealing ring is provided between the circular protrusion and the concave portion, and the second sealing ring is in close contact with the outer peripheral surface of the circular protrusion and the inner wall of the concave portion.

7. The integrated thermal management structure of a plate heat exchanger and compressor as described in claim 5, characterized in that: The second locking element is a second bolt. The outer wall of the plate heat exchanger has multiple second through holes. The outer wall of the high-pressure cover has multiple second screw holes corresponding to the second through holes. The number of second bolts, second through holes and second screw holes are the same and correspond to each other. The second bolt passes through the corresponding second through hole and is threadedly connected to the second screw hole.

8. The integrated thermal management structure of plate heat exchanger and compressor as described in claim 1, characterized in that: The direct connection structure includes a third sealing ring and multiple third locking elements. The outer wall of the plate heat exchanger is in close contact with the outer wall of the high-pressure cover through the third locking elements, and the gaseous refrigerant inlet of the plate heat exchanger is connected to the exhaust port of the high-pressure cover. The third sealing ring is disposed between the outer wall of the plate heat exchanger and the outer wall of the high-pressure cover, and is in close contact with both the outer wall of the plate heat exchanger and the outer wall of the high-pressure cover. The third sealing ring is also arranged around the outer periphery of the gaseous refrigerant inlet of the plate heat exchanger and the exhaust port of the high-pressure cover.

9. The integrated thermal management structure of a plate heat exchanger and compressor as described in claim 8, characterized in that: The third locking element is a third bolt. The outer wall of the plate heat exchanger has multiple third through holes. The outer wall of the high-pressure cover has multiple third screw holes corresponding to the third through holes. The number of third bolts, third through holes and third screw holes are the same and correspond to each other. The third bolt passes through the corresponding third through hole and is threadedly connected to the third screw hole.

Images