An integrated heat exchanger for an automotive heat pump system

Abstract

This invention discloses an integrated heat exchanger for an automotive heat pump system, belonging to the technical field of automotive thermal management devices. It includes a cooling medium pipe, a coolant flow pipe, a refrigerant flow pipe, and a dust removal component. The cooling medium pipe contains a cooling medium, and the refrigerant flow pipe is coaxially fixedly connected to the interior of the cooling medium pipe. The coolant flow pipe is coaxially fixedly sleeved on the outer wall of the refrigerant flow pipe. Heat dissipation fins are provided on the outer sides of both the cooling medium pipe and the coolant flow pipe, and the dust removal component is located on the outer side of the cooling medium pipe. The dust removal component's scraper ring moves up and down to scrape dust from the heat dissipation fins, and the dust removal component ensures uniform heating of the cooling medium inside the cooling medium pipe. This invention facilitates heat exchange between the intermediate cooling medium, coolant, and refrigerant, and enables uniform heat exchange.

Description

Technical Field

[0001] This invention belongs to the technical field of automotive thermal management devices, specifically relating to an integrated heat exchanger for an automotive heat pump system. Background Technology

[0002] Currently, new energy vehicles use heat pump systems to heat the passenger compartment. In order to maintain the normal heating efficiency of the heat pump system in winter, Chinese patent CN216432616U discloses a technical solution for a dust collection radiator assembly and a heat pump system. It collects the coolant of the heat-generating components in the vehicle and the refrigerant of the heat pump system into the same radiator, and uses the refrigerant to absorb the heat of the coolant, reducing heat loss and improving the heating efficiency of the heat pump.

[0003] However, this solution has the following drawbacks: Since the coolant and refrigerant are collected in the same radiator, when cooling is performed, both the coolant and refrigerant need to dissipate heat at the same time. However, the coolant and refrigerant exchange heat directly, and neither of them can get a good heat dissipation effect, which affects the subsequent heat dissipation of the coolant and refrigerant. In addition, the heat dissipation fins on the radiator are prone to accumulating dust, and the presence of dust also affects the heat dissipation of the coolant and refrigerant. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated heat exchanger for an automotive heat pump system, which solves the problem in the prior art where coolant and refrigerant are collected in the same radiator. When cooling is performed, both coolant and refrigerant need to dissipate heat at the same time. However, since the coolant and refrigerant exchange heat directly, neither of them can achieve good heat dissipation, which affects the subsequent heat dissipation of coolant and refrigerant. Furthermore, dust easily accumulates on the heat dissipation fins of the radiator, and the presence of dust also affects the heat dissipation of coolant and refrigerant.

[0005] An integrated heat exchanger for an automotive heat pump system includes a cooling medium pipe, a coolant flow pipe, a refrigerant flow pipe, and a dust removal component. The cooling medium pipe contains a cooling medium, and the refrigerant flow pipe is coaxially fixedly connected to the inside of the cooling medium pipe. The coolant flow pipe is coaxially fixedly sleeved on the outer wall of the refrigerant flow pipe. Heat dissipation fins are provided on the outer sides of both the cooling medium pipe and the coolant flow pipe, and the dust removal component is provided on the outer side of the cooling medium pipe. The dust removal component has a scraper ring that moves up and down to scrape dust off the heat dissipation fins, and the dust removal component ensures that the cooling medium inside the cooling medium pipe is heated evenly.

[0006] Preferably, the dust removal assembly includes an upper protrusion, a lower protrusion, a screw, a U-shaped connecting rod one, and an L-shaped connecting rod two. The upper protrusion and the lower protrusion are fixedly connected to the top and bottom of the cooling medium pipe, respectively. The screw is rotatably connected between the upper protrusion and the lower protrusion and is driven by a drive motor. A separable dust scraper ring is threaded onto the screw and is coaxial with the cooling medium pipe. The inner wall of the dust scraper ring is provided with bristles. The U-shaped connecting rod one and the U-shaped connecting rod two are symmetrically fixedly connected between the two sides of the dust scraper ring. The vertical parts of the U-shaped connecting rod one and the U-shaped connecting rod two are slidably connected to the upper protrusion, and the horizontal parts of the U-shaped connecting rod one and the U-shaped connecting rod two are located below the upper protrusion. The U-shaped connecting rod one and the U-shaped connecting rod two drive the stirring assembly to move up and down.

[0007] Preferably, the dust scraper ring includes a first connecting part, a second connecting part, a groove, a spring, and a wedge block. The dust scraper ring has openings on both sides, which divide the dust scraper ring into the first connecting part and the second connecting part by means of the openings. The top ends of the first U-shaped connecting rod and the second U-shaped connecting rod are respectively fixed to the bottom of the first connecting part and the second connecting part. A groove is opened on one side of the first connecting part, and the wedge block is slidably connected in the groove. The upper and lower sides of the wedge block are both inclined, and the spring is fixedly connected between the wedge block and the groove. A slot is opened on the side of the second connecting part opposite to the groove to cooperate with the wedge block. A magnet is provided in the slot so that the magnet and the wedge block attract each other.

[0008] Preferably, the agitation assembly includes an agitation plate and a slide rod. The agitation plate, which has an annular structure, is slidably connected inside the cooling medium pipe. The agitation plate is hollow. Slide rods are symmetrically fixedly connected to both sides of the agitation plate, and the ends of the slide rods are respectively fixedly connected to the horizontal parts of the first U-shaped connecting rod and the second U-shaped connecting rod. The slide rods pass through the top of the cooling medium pipe and are slidably connected to the top of the cooling medium pipe.

[0009] Preferably, the agitator plate and the dust scraper ring are on the same horizontal plane.

[0010] Preferably, a plurality of heat dissipation fins are fixedly connected at uniform intervals along the circumference of the outer side of the cooling medium pipe, the heat dissipation fins protrude from the coolant flow pipe and have through holes to allow coolant to flow.

[0011] Preferably, liquid refrigerant flows inside the refrigerant flow pipe, and the refrigerant flow pipe is connected to the heat pump system. There are three coolant flow pipes: a vehicle electronic device coolant flow pipe, a battery coolant flow pipe, and a motor coolant flow pipe. These three pipes are fixed sequentially from top to bottom to the outside of the cooling medium pipe. An inlet pipe and an outlet pipe are respectively provided on both sides of the cooling medium pipe, and the inlet and outlet pipes are connected to the coolant flow pipe. The sides of the vehicle electronic device coolant flow pipe, battery coolant flow pipe, and motor coolant flow pipe are respectively connected to the inlet and outlet pipes. The tops of the inlet and outlet pipes are respectively connected to a liquid inlet pipe and a liquid outlet pipe.

[0012] This invention has the following advantages: When the device is heating, the coolant flow pipe contains high-heat coolant, and the refrigerant flow pipe contains low-heat refrigerant. Heat exchange occurs between the two via the cooling medium inside the cooling medium pipe. The temperature of the cooling medium varies at different locations within the cooling medium pipe, and heat transfer is slow; the cooling medium near the coolant flow pipe is at a higher temperature, while the cooling medium further away is at a lower temperature. The refrigerant flow pipe is located in the middle of the cooling medium pipe, and its contact temperature with the cooling medium is also relatively low. Therefore, the refrigerant inside the refrigerant pipe has difficulty quickly acquiring heat. Therefore, the up-and-down movement of the stirring plate... By accelerating the molecular motion within the cooling medium, heat dissipation within the medium is rapidly accelerated. This simultaneously speeds up heat exchange with the refrigerant and coolant, rather than direct heat exchange, ensuring uniform heating of the refrigerant. During cooling, some heat from the coolant within the coolant flow pipe is transferred to the cooling medium, while some is directly transferred to the external environment. Heat from the refrigerant is transferred to the cooling medium and dissipated outwards through the heat dissipation fins on the outside of the cooling medium pipe. Simultaneously, the up-and-down movement of the dust removal component accelerates airflow around the heat dissipation fins, enhancing heat dissipation, and also cleans dust from the fin surface, preventing dust from hindering heat dissipation. This invention utilizes an intermediate cooling medium for heat exchange with the coolant and refrigerant, achieving uniform heat exchange. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the structure of the present invention after removing the coolant flow pipe and the refrigerant flow pipe;

[0015] Figure 3 This is a schematic diagram of the dust removal component of the present invention;

[0016] Figure 4 This is a partial structural schematic diagram of the dust scraper ring of the present invention;

[0017] Figure 5 A schematic diagram of the cooling medium pipeline of the present invention;

[0018] Figure 6 This is a schematic diagram of the structure of the present invention after the heat dissipation fins have been removed.

[0019] Among them: 1. Cooling medium pipe; 10. Heat dissipation fins; 11. Through hole; 2. Coolant flow pipe; 20. Inlet pipe; 21. Outlet pipe; 22. Coolant flow pipe for in-vehicle electronic components; 23. Battery coolant flow pipe; 24. Motor coolant flow pipe; 25. Inlet pipe; 26. Outlet pipe;

[0020] 3. Refrigerant flow pipe; 30. Liquid inlet; 32. Gas outlet;

[0021] 4. Dust removal assembly; 40. Upper protrusion; 41. Lower protrusion; 42. Drive motor; 43. Screw; 44. Dust scraper ring; 440. Connecting part one; 441. Connecting part two; 442. Groove; 443. Wedge block; 444. Spring; 445. Slot; 446. Magnet; 45. U-shaped connecting rod one; 46. U-shaped connecting rod two;

[0022] 5. Agitator assembly; 50. Slide bar; 51. Agitator plate. Detailed Implementation

[0023] The following detailed description of the embodiments, with reference to the accompanying drawings, will further illustrate the specific implementation of the present invention, in order to help those skilled in the art to have a more complete, accurate, and in-depth understanding of the inventive concept and technical solution of the present invention.

[0024] like Figure 1-6 An integrated heat exchanger for an automotive heat pump system is shown, comprising a cooling medium pipe 1, a coolant flow pipe 2, a refrigerant flow pipe 3, and a dust removal assembly 4. The cooling medium pipe 1 contains a cooling medium, and the refrigerant flow pipe 3 is coaxially fixedly connected inside the cooling medium pipe 1. The coolant flow pipe 2 is coaxially fixedly sleeved on the outer wall of the cooling medium pipe 1. Heat dissipation fins 10 are provided on the outer sides of both the cooling medium pipe 1 and the coolant flow pipe 2, and the dust removal assembly 4 is provided on the outer side of the cooling medium pipe 1. The dust removal assembly 4 has a scraper ring 44 that moves up and down to scrape dust off the heat dissipation fins 10 and to ensure that the cooling medium inside the cooling medium pipe 1 is heated evenly by means of the dust removal assembly 4.

[0025] The dust removal assembly 4 includes an upper protrusion 40, a lower protrusion 41, a screw 43, a first U-shaped connecting rod 45, and a second U-shaped connecting rod 46. The upper protrusion 40 and the lower protrusion 41 are fixedly connected to the top and bottom of the cooling medium pipe 1, respectively. The screw 43 is rotatably connected between the upper protrusion 40 and the lower protrusion 41 and is driven by a drive motor 42. A separable dust scraper ring 44 is threaded onto the screw 43, and the dust scraper ring 44 is connected to the cooling medium pipe 1. The medium pipeline 1 has a coaxial structure. The inner wall of the dust scraper ring 44 is provided with bristles. The two sides of the dust scraper ring 44 are symmetrically and fixedly connected with the first U-shaped connecting rod 45 and the second U-shaped connecting rod 46. The vertical parts of the first U-shaped connecting rod 45 and the second U-shaped connecting rod 46 are slidably connected to the upper protrusion 40, and the horizontal parts of the first U-shaped connecting rod 45 and the second U-shaped connecting rod 46 are located below the upper protrusion 40. The first U-shaped connecting rod 45 and the second U-shaped connecting rod 46 drive the stirring assembly 5 to move up and down.

[0026] The heat dissipation fins 10 on the cooling medium pipe 1 are vertical. Therefore, a dust removal component 4 is installed on the outside of the cooling medium pipe 1. The drive motor 42 drives the screw 43 to rotate. The rotation of the screw 43 can drive the dust scraper ring 44 to move up and down. The brush bristles on the inner wall of the dust scraper ring 44 clean the dust on the heat dissipation fins 10. Since the outside of the cooling medium pipe 1 is wrapped with the coolant flow pipe 2, the two sides of the coolant flow pipe 2 are generally connected to the inlet pipe 20 and the outlet pipe 21. The presence of the inlet pipe 20 and the outlet pipe 21 will block the movement of the dust scraper ring 44. Therefore, the dust scraper ring 44 is designed to be separable. The two sides of the dust scraper ring 44 are fixed by U-shaped connecting rod 1 45 and U-shaped connecting rod 2 46. The separated dust scraper ring 44 can move up and down synchronously. The circumference of the cooling medium pipe 1 can be cleaned, and the dust accumulated on the heat dissipation fins 10 can be prevented from affecting the heat dissipation of the cooling medium pipe 1.

[0027] The dust scraper ring 44 includes a first connecting part 440, a second connecting part 441, a groove 442, a spring 444, and a wedge block 443. The dust scraper ring 44 has openings on both sides, which divide it into the first connecting part 440 and the second connecting part 441. The top ends of the first U-shaped connecting rod 45 and the second U-shaped connecting rod 46 are respectively fixed to the bottom of the first connecting part 440 and the second connecting part 441. A groove is formed on one side of the first connecting part 440. The groove 442 has a wedge block 443 slidably connected within it. The upper and lower sides of the wedge block 443 are both inclined. The spring 444 is fixedly connected between the wedge block 443 and the groove 442. The connecting part 441 has a slot 445 on the side opposite to the groove 442 that mates with the wedge block 443. A magnet 446 is provided in the slot 445 so that the magnet 446 and the wedge block 443 attract each other.

[0028] The dust scraper ring 44 is divided into a first connecting part 440 and a second connecting part 441 by openings on both sides. The first connecting part 440 and the second connecting part 441 are located on the front and rear sides of the cooling medium pipe 1, respectively. When it moves upward and encounters the liquid inlet pipe 20 or the liquid outlet pipe 21, the top of the wedge block 443 can first abut against the bottom of the liquid inlet pipe 20 or the liquid outlet pipe 21. As the screw 43 continues to rotate, the top of the wedge block 443 has a sloping structure, and the liquid inlet pipe 20 or the liquid outlet pipe 21 abuts against the wedge block 443. Applying pressure pushes the wedge block 443 into the groove 442, causing the spring 444 to contract until the inlet pipe 20 or outlet pipe 21 passes through the opening. Under the push of the spring 444, the wedge block 443 returns to the slot 445. When it does not pass through the inlet pipe 20 or outlet pipe 21, the cooperation between the wedge block 443 and the slot 445 allows the dust scraper ring 44 to form a complete closed structure, thus cleaning the periphery of the cooling medium pipe 1 from all directions during dust scraping.

[0029] The agitation assembly 5 includes an agitation plate 51 and sliding rods 50. The agitation plate 51, which has an annular structure, is slidably connected inside the cooling medium pipe 1. The agitation plate 51 is hollow. Sliding rods 50 are symmetrically fixedly connected to both sides of the agitation plate 51, and the ends of the sliding rods 50 are respectively fixedly connected to the horizontal portions of the first U-shaped connecting rod 45 and the second U-shaped connecting rod 46. The sliding rods 50 penetrate the top of the cooling medium pipe 1 and are slidably connected to the top of the cooling medium pipe 1. The agitation plate 51 and the dust scraper ring 44 are on the same horizontal plane.

[0030] The agitator plate 51 of the agitator assembly 5 is located inside the cooling medium pipe 1. The up-and-down movement of the dust scraper ring 44 can drive the U-shaped connecting rod 45 and the U-shaped connecting rod 46 to move up and down. In turn, the sliding rod 50 can drive the agitator plate 51 to move up and down inside the cooling medium pipe 1. Because the surface of the cooling medium pipe 1 is provided with multiple coolant flow pipes 2, the coolant in the multiple coolant flow pipes 2 dissipates heat to different components in the electric vehicle, resulting in the temperature of the coolant in different coolant flow pipes 2 not being uniform. The temperature of the cooling medium at different locations in the cooling medium pipe 1 is different, and the heat transfer is slow. The temperature of the cooling medium near the coolant flow pipe 2 is higher, while the temperature of the cooling medium far from the coolant flow pipe 2 is lower. The refrigerant flow pipe 3 is located in the middle of the cooling medium pipe 1, and the temperature of the coolant it contacts is also lower. It is difficult for the refrigerant inside to quickly acquire heat. Therefore, by using the up-and-down movement of the agitator plate 51, the molecular motion inside the cooling medium is accelerated, and the heat inside the cooling medium is rapidly diffused. This can simultaneously accelerate the heat exchange between the refrigerant and the coolant. Multiple heat dissipation fins 10 are fixedly connected at uniform intervals along the circumference of the outer side of the cooling medium pipe 1. The heat dissipation fins 10 extend out of the coolant flow pipe 2 and have through holes 11 to allow coolant to flow.

[0031] The heat dissipation fins 10 extend out of the coolant flow pipe 2, so that the heat of the coolant inside the coolant flow pipe 2 can come into contact with the heat dissipation fins 10. Part of the heat is transferred to the cooling medium, and the other part is transferred to the outside through the heat dissipation fins 10, thereby enhancing the heat dissipation effect of the coolant.

[0032] Liquid refrigerant flows inside the refrigerant flow pipe 3, and the refrigerant flow pipe 3 is connected to the heat pump system. There are three coolant flow pipes 2, namely, vehicle electronic device coolant flow pipe 22, battery coolant flow pipe 23, and motor coolant flow pipe 24. The vehicle electronic device coolant flow pipe 22, battery coolant flow pipe 23, and motor coolant flow pipe 24 are fixed to the outside of the cooling medium pipe 1 from top to bottom. The cooling medium pipe 1 has an inlet pipe 25 and an outlet pipe 26 on both sides, which are connected to the coolant flow pipe 2. The vehicle electronic device coolant flow pipe 22, battery coolant flow pipe 23, and motor coolant flow pipe 24 are connected to the inlet pipe 25 and the outlet pipe 26 on both sides, respectively. The top of the inlet pipe 25 and the outlet pipe 26 are connected to the liquid inlet pipe 20 and the liquid outlet pipe 21, respectively.

[0033] During heating, the coolant in the coolant flow pipe 2 carries high-temperature coolant, while the refrigerant in the refrigerant flow pipe 3 carries low-temperature refrigerant. Heat exchange occurs between the two via the cooling medium inside the cooling medium pipe 1, rather than direct heat exchange, ensuring even heating of the refrigerant. During cooling, some of the heat from the coolant in the coolant flow pipe 2 is transferred to the cooling medium, while some is directly transferred to the external environment. The heat from the refrigerant is transferred to the cooling medium and dissipated outwards through the heat dissipation fins 10 outside the cooling medium pipe 1. Simultaneously, the up-and-down movement of the dust removal component 4 accelerates the airflow outside the heat dissipation fins 10, resulting in better heat dissipation. Both the inlet pipe 20 and the outlet pipe 21 are divided into three chambers by partitions. These three chambers correspond to the vehicle electronic component coolant flow pipe 22, the battery coolant flow pipe 23, and the motor coolant flow pipe 24, respectively. This prevents the coolant inside these three pipes from flowing together.

[0034] Working principle: The heat dissipation fins 10 on the cooling medium pipe 1 are vertical. Therefore, a dust removal component 4 is installed on the outside of the cooling medium pipe 1. The drive motor 42 drives the screw 43 to rotate. The rotation of the screw 43 can drive the dust scraper ring 44 to move up and down, thereby using the bristles on the inner wall of the dust scraper ring 44 to clean the dust on the heat dissipation fins 10. Since the outside of the cooling medium pipe 1 is wrapped with the coolant flow pipe 2, the coolant flow pipe 2 is generally connected to the inlet pipe 20 and the outlet pipe 21 on both sides. The presence of the 0 and the outlet pipe 21 would obstruct the movement of the dust scraper ring 44. Therefore, the dust scraper ring 44 is designed to be separable. U-shaped connecting rod 1 45 and U-shaped connecting rod 2 46 are used to fix the two separated parts of the dust scraper ring 44. Thus, the separated dust scraper ring 44 can move up and down synchronously, and the circumference of the cooling medium pipe 1 can be cleaned, preventing the dust accumulated on the heat dissipation fins 10 from affecting the heat dissipation of the cooling medium pipe 1. The stirring plate 51 of the stirring assembly 5 is set inside the cooling medium pipe 1, and the up and down movement of the dust scraper ring 44 The movement of the agitator can drive the U-shaped connecting rod 45 and the U-shaped connecting rod 46 to move up and down, which in turn can drive the agitator 51 to move up and down inside the cooling medium pipe 1 using the slide rod 50. Because the surface of the cooling medium pipe 1 is provided with multiple coolant flow pipes 2, the coolant in the multiple coolant flow pipes 2 dissipates heat from different components in the electric vehicle, resulting in the coolant temperature in different coolant flow pipes 2 not being uniform. The temperature of the cooling medium at different locations in the cooling medium pipe 1 is different, and the heat transfer is slow. The temperature of the cooling medium near the coolant flow pipe 2 is higher, while the temperature of the cooling medium far from the coolant flow pipe 2 is lower. The refrigerant flow pipe 3 is located in the middle of the cooling medium pipe 1, and the temperature of the coolant it contacts is also lower. It is difficult for the refrigerant inside to quickly acquire heat. Therefore, by using the up and down movement of the agitator 51, the molecular movement inside the cooling medium is accelerated, and the heat inside the cooling medium is rapidly diffused. This can simultaneously accelerate the heat exchange between the refrigerant and the coolant.

[0035] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. An integrated heat exchanger for an automotive heat pump system, characterized in that: The device includes a cooling medium pipe (1), a coolant flow pipe (2), a refrigerant flow pipe (3), and a dust removal assembly (4). The cooling medium pipe (1) contains a cooling medium inside. The refrigerant flow pipe (3) is coaxially fixedly connected inside the cooling medium pipe (1). The coolant flow pipe (2) is coaxially fixedly sleeved on the outer wall of the cooling medium pipe (1). Heat dissipation fins (10) are provided on the outer side of both the cooling medium pipe (1) and the coolant flow pipe (2). The dust removal assembly (4) is provided on the outer side of the cooling medium pipe (1). The dust scraping ring (44) of the dust removal assembly (4) moves up and down to scrape the dust off the heat dissipation fins (10) and the cooling medium inside the cooling medium pipe (1) is heated evenly by means of the dust removal assembly (4).

2. The integrated heat exchanger for an automotive heat pump system according to claim 1, characterized in that: The dust removal assembly (4) includes an upper protrusion (40), a lower protrusion (41), a screw (43), a U-shaped connecting rod one (45), and a U-shaped connecting rod two (46). The upper protrusion (40) and the lower protrusion (41) are fixedly connected to the top and bottom of the cooling medium pipe (1), respectively. The screw (43) is rotatably connected between the upper protrusion (40) and the lower protrusion (41), and the screw (43) is driven by a drive motor (42). A separable dust scraper ring (44) is threaded onto the screw (43), and the dust scraper ring (44) is coaxial with the cooling medium pipe (1). The inner wall of the dust scraper ring (44) is provided with bristles. The U-shaped connecting rod one (45) and the U-shaped connecting rod two (46) are symmetrically fixedly connected between the two sides of the dust scraper ring (44). The vertical part of the second U-shaped connecting rod (46) is slidably connected to the upper protrusion (40), and the horizontal parts of the first U-shaped connecting rod (45) and the second U-shaped connecting rod (46) are located below the upper protrusion (40). The first U-shaped connecting rod (45) and the second U-shaped connecting rod (46) drive the stirring assembly (5) to move up and down.

3. The integrated heat exchanger for an automotive heat pump system according to claim 2, characterized in that: The dust scraper ring (44) includes a connecting part one (440), a connecting part two (441), a groove (442), a spring (444), and a wedge block (443). The dust scraper ring (44) has openings on both sides, which divide the dust scraper ring (44) into connecting part one (440) and connecting part two (441). The U-shaped connecting rod one (45) and U... The top two ends of the second type of connecting rod (46) are respectively fixed to the bottom of the first connecting part (440) and the second connecting part (441). A groove (442) is provided on one side of the first connecting part (440), and the wedge block (443) is slidably connected in the groove (442). The upper and lower sides of the wedge block (443) are both inclined, and the spring (444) is fixedly connected between the wedge block (443) and the groove (442). A slot (445) is provided on the side of the second connecting part (441) opposite to the groove (442) to cooperate with the wedge block (443). A magnet (446) is provided in the slot (445) so that the magnet (446) and the wedge block (443) attract each other.

4. The integrated heat exchanger for an automotive heat pump system according to claim 2, characterized in that: The stirring assembly (5) includes a stirring plate (51) and a sliding rod (50). The stirring plate (51) with an annular structure is slidably connected inside the cooling medium pipe (1). The stirring plate (51) is hollow. Sliding rods (50) are symmetrically fixedly connected to both sides of the stirring plate (51), and the ends of the two sliding rods (50) are respectively fixedly connected to the horizontal parts of the first U-shaped connecting rod (45) and the second U-shaped connecting rod (46). The sliding rod (50) passes through the top of the cooling medium pipe (1) and is slidably connected to the top of the cooling medium pipe (1).

5. An integrated heat exchanger for an automotive heat pump system according to claim 4, characterized in that: The stirring plate (51) and the dust scraper ring (44) are on the same horizontal plane.

6. An integrated heat exchanger for an automotive heat pump system according to claim 5, characterized in that: Multiple heat dissipation fins (10) are fixedly connected at uniform intervals along the circumference of the outer side of the cooling medium pipe (1). The heat dissipation fins (10) pass through the coolant flow pipe (2) and have through holes (11) to allow coolant to flow.

7. The integrated heat exchanger for an automotive heat pump system according to claim 1, characterized in that: The refrigerant flow pipe (3) contains liquid refrigerant and is connected to the heat pump system. The coolant flow pipe (2) has three sections: a vehicle electronic device coolant flow pipe (22), a battery coolant flow pipe (23), and a motor coolant flow pipe (24). These three pipes are fixed from top to bottom to the outside of the cooling medium pipe (1). The medium pipe (1) is provided with an inlet pipe (25) and an outlet pipe (26) on both sides. The inlet pipe (25) and the outlet pipe (26) are connected to the coolant flow pipe (2). The in-vehicle electronic device coolant flow pipe (22), the battery coolant flow pipe (23) and the motor coolant flow pipe (24) are connected to the inlet pipe (25) and the outlet pipe (26) on both sides respectively. The top of the inlet pipe (25) and the outlet pipe (26) are connected to the liquid inlet pipe (20) and the liquid outlet pipe (21) respectively.

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