Gas-liquid separation device

Abstract

A gas-liquid separation device comprises a shell, an end socket and a heat exchange assembly, and the shell and the end socket are fixedly connected or connected in a limiting mode; the shell is provided with a containing cavity, at least part of the heat exchange assembly is located in the containing cavity, and the end socket is provided with a first connector, a second connector, an inlet and an outlet. The heat exchange assembly is provided with a flow channel, one end of the flow channel communicates with the first connector, the other end of the flow channel communicates with the second connector, and the inlet and the outlet communicate with the containing cavity, so that the assembling convenience can be improved.

Description

Technical Field

[0001] This application relates to the technical field of thermal management, and particularly relates to a gas-liquid separation device. Background Art

[0002] A gas-liquid separation device can separate a refrigerant into a gaseous refrigerant and a liquid refrigerant, allowing the gaseous refrigerant to return to the compressor, thereby preventing the liquid refrigerant from entering the compressor. However, in current gas-liquid separation devices, the inlet and outlet structures are often located on different components, which affects the convenience of connecting the gas-liquid separation device to an external pipeline structure. Summary of the Utility Model

[0003] The purpose of this application is to provide a gas-liquid separation device that can improve the convenience of assembly.

[0004] To achieve the above purpose, an embodiment of this application adopts the following technical solution:

[0005] A gas-liquid separation device includes a housing, a head, and a heat exchange component. The housing is fixedly connected or limit-connected to the head; the housing has a receiving cavity, at least part of the heat exchange component is located in the receiving cavity, the head has a first interface, a second interface, an inlet, and an outlet; the heat exchange component has a flow channel, one end of the flow channel is communicated with the first interface, the other end of the flow channel is communicated with the second interface, and both the inlet and the outlet are communicated with the receiving cavity.

[0006] In the technical solution provided by this application, the gas-liquid separation device includes a housing, a head, and a heat exchange component. Since the first interface, the second interface, the inlet, and the outlet are all located on the head, it is convenient to connect to an external pipeline structure through the same component, improving the convenience of assembling the gas-liquid separation device with the external pipeline structure. Description of the Drawings

[0007] Figure 1 is a three-dimensional structural schematic diagram of the gas-liquid separation device provided by this application;

[0008] Figure 2 is Figure 1 the top view of the gas-liquid separation device in

[0009] Figure 3 is Figure 2 the sectional structural schematic diagram of the gas-liquid separation device along the A-A plane in

[0010] Figure 4 is Figure 3 the partial enlarged view at B of the gas-liquid separation device in

[0011] Figure 5 is Figure 2 the sectional structural schematic diagram of the gas-liquid separation device along the B-B plane in

[0012] Figure 6 is Figure 1 Explosion structure schematic diagram of the gas-liquid separation device without the housing;

[0013] Figure 7 is Figure 6 Explosion diagram of the gas-liquid separation device without the head and the heat exchange component;

[0014] Figure 8 is Figure 6 Structure schematic diagram of the heat exchange component of the gas-liquid separation device;

[0015] Figure 9 is Figure 6 Structure schematic diagram of the diversion pipe of the gas-liquid separation device.

[0016] Description of main component symbols:

[0017] 100, gas-liquid separation device; 10, housing; 11, accommodation cavity; 20, head; 21, first interface; 22, second interface; 23, inlet; 24, outlet; 25, limiting cavity; 30, heat exchange component; 301, flow channel; 31, first end; 32, second end; 33, heat exchange part; 331, microchannel; 332, first part; 333, second part; 40, diversion pipe; 401, pipe; 41, extension part; 42, bending part; 43, second oil return hole; 50, gas-liquid separation component; 51, inner cylinder; 511, inner cavity; 52, cover body; 521, first through hole; 522, second through hole; 53, first pipe body; 54, second pipe body; 55, filter; 551, first oil return hole; 56, diversion channel; 57, cavity opening; 58, water absorption part; 60, liquid dispersion cup; 61, first limiting part; 62, second limiting part; 63, liquid dispersion part; 64, protection part.

[0018] The above description of main component symbols further elaborates on the present utility model in conjunction with the accompanying drawings and specific embodiments. Specific Embodiments

[0019] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following describes the specific embodiments of the present utility model in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0020] The following further illustrates the present application with reference to the accompanying drawings and specific embodiments:

[0021] Figures 1 to 9 An embodiment of a gas-liquid separation device 100 is shown. The gas-liquid separation device 100 includes a housing 10, a head 20, and a heat exchange component 30. The housing 10 is fixedly connected or limitedly connected to the head 20; the housing 10 has a receiving cavity 11, and at least a part of the heat exchange component 30 is located in the receiving cavity 11. The head 20 has a first interface 21, a second interface 22, an inlet 23, and an outlet 24, and both the inlet 23 and the outlet 24 communicate with the receiving cavity 11. In this application, since the first interface 21, the second interface 22, the inlet 23, and the outlet 24 are all located on the head 20, it is convenient to connect to an external structure through the same component, improving the convenience of the gas-liquid separation device 100.

[0022] Please refer specifically to Figure 6 and Figure 7 , the heat exchange component 30 includes a first end 31, a second end 32, and a heat exchange part 33. Both the first end 31 and the second end 32 have a flow channel 301. The flow channel 301 of the first end 31 communicates with the first interface 21, and the flow channel 301 of the second end 32 communicates with the second interface 22. One port of the heat exchange part 33 communicates with the flow channel 301 of the first end 31, and the other port of the heat exchange part 33 communicates with the flow channel 301 of the second end 32. Specifically, in this embodiment, the flow channel 301 of the first end 31 communicates with the first interface 21, and the flow channel 301 of the second end 32 communicates with the second interface 22. On the one hand, the first interface 21 and the second interface 22 are arranged in the same direction at one end of the head 20, which is convenient for connecting to an external pipeline structure; on the other hand, the first interface 21 and the second interface 22 are used to circulate high-temperature and high-pressure refrigerant to achieve heat exchange. In other embodiments, the first interface 21 can be an inlet or an outlet. When the first interface 21 is an inlet, the second interface 22 is correspondingly an outlet; when the first interface 21 is an outlet, the second interface 22 is correspondingly an inlet.

[0023] In this embodiment, the sizes of the first interface 21 and the second interface 22 are 6 mm to 9 mm, and the sizes of the inlet 23 and the outlet 24 are 14 mm to 16 mm. It should be noted that the first interface 21 and the second interface 22 are high-pressure interfaces, and the inlet 23 and the outlet 24 are low-pressure interfaces. The sizes of the inlet 23 and the outlet 24 are larger than those of the first interface 21 and the second interface 22. On the one hand, it can increase the flow rate of the gaseous refrigerant at the outlet 24, and on the other hand, it can increase the flow rate of the liquid refrigerant at the first interface 21 and the second interface 22, thereby improving the heat exchange efficiency for the gaseous refrigerant.

[0024] The terms "first", "second", "third", and "fourth" in this specification are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0025] It should be noted that the orientation terms such as up, down, left, right, front, and back mentioned in this specification are based on the orientation in the accompanying drawings of the specification. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0026] Combined with Figure 3 , Figure 6 and Figure 7 As shown, the gas-liquid separation device 100 further includes a gas-liquid separation assembly 50. The gas-liquid separation assembly 50 includes an inner cylinder 51 and a cover 52. The inner cylinder 51 is fixedly connected or limitedly connected to the cover 52. Specifically, the inner cylinder 51 is preferably made of plastic, and the inner cylinder 51 and the cover 52 are fixed by welding. The inner cylinder 51 is located in the accommodation cavity 11, the heat exchange assembly 30 is located between the inner cylinder 51 and the housing 10, and the diversion pipe 40 is located between the inner cylinder 51 and the housing 10. Specifically, the heat exchange assembly 30 is located between the inner cylinder 51 and the housing 10 and is used to perform heat exchange on the gaseous refrigerant located between the inner cylinder 51 and the housing 10.

[0027] It should be noted that in this embodiment, the heat exchange assembly 30 has a clearance with both the housing 10 and the inner cylinder 51. This can increase the heat exchange area for the gaseous refrigerant and the heat exchange effect is good. If the heat exchange assembly 30 is in direct contact with the inner cylinder 51, the liquid refrigerant stored in the inner cylinder 51 may have a transpiration effect, resulting in problems such as whistling, abnormal noise, and noise.

[0028] Please specifically refer to Figure 3 , the inner cylinder 51 has an inner cavity 511 communicating with the accommodation cavity 11, and the cover 52 has a first through hole 521. The first through hole 521 communicates with the inner cavity 511 and the inlet 23. It should be noted that the inlet 23 is used to communicate with the refrigerant in a gas-liquid two-phase state, and the gas-liquid two-phase refrigerant flows into the inner cavity 511 through the first through hole 521 to achieve preliminary gas-liquid separation.

[0029] The gas-liquid separation component 50 further includes a first pipe body 53, a second pipe body 54 and a filter 55. One end of the first pipe body 53 is fixedly connected or limitedly connected to the cover body 52, and the other end of the first pipe body 53 is fixedly connected or limitedly connected to the filter 55. The second pipe body 54 is located on the outer periphery of the first pipe body 53, and one end of the second pipe body 54 away from the cover body 52 is fixedly connected or limitedly connected to the filter 55. In this way, the fixing effect on the first pipe body 53 and the second pipe body 54 is good. It should be noted that in this embodiment, both the first pipe body 53 and the second pipe body 54 are hollow pipe structures. There are a cavity opening 57 and a diversion channel 56 communicating with the cavity opening 57 between the first pipe body 53 and the second pipe body 54. The cover body 52 has a second through hole 522, and the second through hole 522 communicates with the accommodation cavity 11 and the first pipe body 53. The second through hole 522 communicates with the inner cavity 511 and the accommodation cavity 11 through the diversion channel 56, and the cavity opening 57 is located at the end away from the filter 55. Further, after the refrigerant in the gas-liquid two-phase state enters the inner cavity 511, the liquid refrigerant is stored at the bottom of the inner cavity 511, and the gaseous refrigerant rises to the cavity opening 57 and flows through the diversion channel 56 and the first pipe body 53 to the second through hole 522, and then flows through the second through hole 522 to the accommodation cavity 11.

[0030] Combine Figure 3 and Figure 7As shown, the gas-liquid separation assembly 50 further includes a liquid dispersion cup 60. The liquid dispersion cup 60 includes a first limiting portion 61, a second limiting portion 62, a liquid dispersion portion 63 and a protection portion 64. Along the axial direction of the gas-liquid separation device 100, the first limiting portion 61 extends from the liquid dispersion portion 63 towards the head 20, and the first limiting portion 61 is fixedly connected or limit-connected to the first pipe body 53. The second limiting portion 62 extends from the liquid dispersion portion 63 towards the filter 55, and the second limiting portion 62 is fixedly connected or limit-connected to the second pipe body 54. The protection portion 64 extends from the liquid dispersion portion 63 towards the filter 55. Along the radial direction of the gas-liquid separation device 100, the diameter of the protection portion 64 is greater than that of the second limiting portion 62. It should be noted that the liquid dispersion portion 63 is preferably disc-shaped. The first limiting portion 61 extends from the liquid dispersion portion 63 towards the head 20 to fix the liquid dispersion cup 60 to the first pipe body 53. The second limiting portion 62 extends from the liquid dispersion portion 63 towards the filter 55 to fix the liquid dispersion cup 60 to the second pipe body 54, and the liquid dispersion cup 60 is restricted axially by two fixed points, and the restriction effect is good. The protection portion 64 extends from the liquid dispersion portion 63 towards the filter 55, which can play a certain anti-splash effect. Specifically, the liquid dispersion portion 63 is located below the first through hole 521. When the refrigerant of the gas-liquid two-phase enters through the first through hole 521 and lands on the liquid dispersion portion 63, the liquid refrigerant will splash on the inner wall of the inner cylinder 51, which will cause part of the liquid refrigerant to splash to the cavity opening 57 and enter through the diversion channel 56, affecting the gas-liquid separation effect. The protection portion 64 of the present application extends from the liquid dispersion portion 63 towards the filter 55, which can play a certain blocking role, thereby reducing the liquid refrigerant from splashing into the diversion channel 56.

[0031] In addition, along the radial direction of the gas-liquid separation device 100, the diameter of the protection portion 64 is greater than that of the second limiting portion 62. In other words, the protection portion 64 is relatively closer to the inner wall of the inner cylinder 51 than the second limiting portion 62, which can further reduce the liquid refrigerant from splashing into the diversion channel 56.

[0032] Please refer specifically to Figure 3 , the gas-liquid separation device 100 has a first oil return hole 551. Specifically, the filter 55 has a first oil return hole 551, and the first oil return hole 551 communicates with the accommodation cavity 11 and the first pipe body 53. It should be noted that when the refrigerant of the gas-liquid two-phase is dispersed through the liquid dispersion cup 60, the refrigerating oil and part of the liquid refrigerant will sink to the bottom of the inner cavity 511, and the gaseous refrigerant will rise to the cavity opening 57 and flow through the diversion channel 56 and the first pipe body 53 to the second through hole 522, and flow through the second through hole 522 to the accommodation cavity 11. At the same time, the refrigerating oil sinking at the bottom of the inner cavity 511 and mixed with a small amount of liquid refrigerant returns oil to the compressor through the first oil return hole 551 of the filter 55.

[0033] The gas-liquid separation component 50 further includes a water absorption member 58, and the water absorption member 58 is located in the inner cavity 511. In this embodiment, the water absorption member 58 is preferably a molecular sieve package, and the molecular sieve package is used to absorb water molecules in the refrigerant, and the absorption effect is good.

[0034] Please refer specifically to Figure 9 , the gas-liquid separation device 100 further includes a diversion pipe 40, and the diversion pipe 40 is fixedly connected or limitedly connected to the head 20. The diversion pipe 40 has a pipe 401, one port of the pipe 401 is communicated with the outlet 24, and the other port of the pipe 401 is communicated with the accommodation cavity 11. In this embodiment, the diversion pipe 40 is fixedly connected to the head 20 by a riveting fixing method.

[0035] The head 20 has a limiting cavity 25, at least part of the diversion pipe 40 is located in the limiting cavity 25, along the axial direction of the gas-liquid separation device 100, the diversion pipe 40 extends in a direction away from the limiting cavity 25, and at least part of the heat exchange component 30 is located between the two ends of the diversion pipe 40, so that the refrigerant to enter the diversion pipe 40 can be heat-exchanged to improve the dryness of the refrigerant. The diversion pipe 40 includes an extension part 41 and a bending part 42, and the extension part 41 is fixedly connected or limitedly connected to the bending part 42 or is an integral structure; along the axial direction of the gas-liquid separation device 100, the extension part 41 extends in a direction away from the limiting cavity 25, and the bending part 42 extends from the extension part 41 by bending. It should be noted that the axial direction of the gas-liquid separation device 100 in this embodiment is parallel to the extension direction of the housing 10. In some embodiments, the extension part 41 is a straight pipe, and the bending mode of the bending part 42 can be a straight bending, an arc bending or a special-shaped bending. In this embodiment, the bending part 42 is preferably an arc bending, and the bending part 42 is in an arc shape. The arc-shaped structure can play a certain guiding role for the incoming gaseous refrigerant, and the guiding effect is better than that of the straight bending mode.

[0036] In other embodiments, the extension part 41 can extend in a straight or arc shape in a direction away from the limiting cavity 25, as long as one end of the extension part 41 is communicated with the outlet 24 and the pipe orifice of the bending part 42 is located at the bottom of the accommodation cavity 11. Optionally, the diversion pipe 40 can also adopt a coaxial pipe structure design.

[0037] Please refer specifically to Figures 1 to 9 , the first interface 21, the second interface 22, the inlet 23 and the outlet 24 are located on the same side of the head 20 and face the same direction. It is convenient to connect with the external pipeline structure in the same plane, and improves the convenience of the gas-liquid separation device in assembling with the external pipeline structure. In addition, since the first interface 21, the second interface 22, the inlet 23 and the outlet 24 are all located on the same side of the head 20 and face the same direction, compared with the outlet 24 being arranged at the bottom of the housing 10, this embodiment can save the axial space of the gas-liquid separation device 100.

[0038] Combined with Figure 3 and Figure 9 As shown, it should be noted that after the refrigerant in the gas-liquid two-phase enters the inner cavity 511, the liquid refrigerant is stored at the bottom of the inner cavity 511, and the gaseous refrigerant rises to the orifice 57 and flows through the diversion channel 56 and the first pipe body 53 to the second through hole 522, and then flows through the second through hole 522 to the accommodation cavity 11. Since the extension part 41 extends from the limiting cavity 25 in a direction away from the limiting cavity 25, the orifice of the diversion pipe 40 is located at the bottom of the accommodation cavity 11, and there is a height difference between the second through hole 522 and the orifice of the diversion pipe 40 along the axial direction of the gas-liquid separation device 100. It can be understood that the refrigerant flowing out of the second through hole 522 needs to flow from the top of the accommodation cavity 11 to the bottom of the accommodation cavity 11 before it can enter the orifice of the diversion pipe 40 and flow out through the outlet 24. Since the heat exchange component 30 is located between the inner cylinder 51 and the inner wall of the housing 10, during this process, the refrigerant must flow through the heat exchange component 30 before it can enter the orifice of the diversion pipe 40, and the heat exchange component 30 performs heat exchange treatment on the refrigerant during this process. Specifically, the heat exchange component 30 improves the dryness of the gaseous refrigerant by dissipating heat, thereby improving the gas-liquid separation efficiency of the gas-liquid separation device 100.

[0039] It should be noted that in other embodiments, if the structure of the diversion pipe 40 is cancelled, when the gaseous refrigerant flows to the accommodation cavity 11 through the second through hole 522, the gaseous refrigerant at this time will directly discharge from the outlet 24. In this way, since it does not go through the heat exchange process of the heat exchange component 30, the dryness of the gaseous refrigerant is affected.

[0040] Furthermore, please specifically refer to Figure 9 , the diversion pipe 40 has a second oil return hole 43, and the second oil return hole 43 is located at one end of the diversion pipe 40 relatively far from the head 20, and the second oil return hole 43 communicates with the accommodation cavity 11. It should be noted that when the gas-liquid two-phase refrigerant is dissipated through the liquid dispersion cup 60, the refrigeration oil and part of the liquid refrigerant will sink to the bottom of the inner cavity 511. The refrigeration oil sinking to the bottom of the inner cavity 511 is mixed with a small amount of liquid refrigerant and undergoes the first oil return through the first oil return hole 551 of the filter 55. Part of the refrigeration oil mixed with a small amount of liquid refrigerant will flow to the bottom of the accommodation cavity 11 through the second through hole 522, and then part of the refrigeration oil is absorbed into the diversion pipe 40 through the second oil return hole 43 to achieve the second oil return, and finally output from the outlet 24. Combined with Figures 3 to 5 As shown, the heat exchange part 33 is spirally wound around the outer peripheries of the inner cylinder 51 and the diversion pipe 40. The heat exchange part 33 is unfolded into a strip shape, and the heat exchange part 33 has a plurality of micro-channels 331. It should be noted that the plurality of micro-channels 331 can enhance the heat dissipation effect. The heat exchange part 33 is unfolded into a strip shape, and the strip shape is convenient for winding.

[0041] Please specifically refer to Figure 8, in this embodiment, the heat exchange part 33 is spirally wound around the first end 31 and the second end 32, so that the first end 31 and the second end 32 can also participate in heat dissipation in their corresponding areas, which can reduce the waste of the heat exchange area.

[0042] The heat exchange part 33 adopts the form of a spiral flat tube, which has fewer solder joints than the bent flat tube form, with a simple welding form and stable and reliable process. The gas-liquid separation device 100 of the present application adopts a heat exchange component in the form of a spiral flat tube, which can greatly improve the heat exchange performance of the product, improve the heat exchange efficiency, and has good stability and reliability after mass production.

[0043] In other embodiments, the heat exchange part 33 can also adopt a semi-circular flat tube structure, a cylindrical flat tube structure or a spiral round tube similar to a spring structure, as long as the heat exchange part 33 is located between the inner cylinder 51 and the housing 10 and can perform heat exchange on the refrigerant located between the inner cylinder 51 and the housing 10.

[0044] In this embodiment, the part where the heat exchange part 33 contacts the first end 31 is defined as the first part 332; the part where the heat exchange part 33 contacts the second end 32 is defined as the second part 333. Along the axial direction of the gas-liquid separation device 100, the length of the second end 32 is greater than the length of the first end 31, and the first part 332 is closer to the head 20 than the second part 333. In the present application, the first part 332 is closer to the head 20 than the second part 333, and the heat exchange part 33 is a spiral flat tube structure, which is convenient for the heat exchange part 33 to be wound around the first end 31 and the second end 32, so that the high-temperature refrigerant flowing in the heat exchange part 33 forms a spiral eddy current.

[0045] In addition, since the heat exchange part 33 is a spiral structure, the first end 31 and the second end 32 do not need to be set to the same length, which can save certain costs.

[0046] It should be noted that the above embodiments are only used to illustrate the present application and do not limit the technical solutions described in the present application. Although this specification has described the present application in detail with reference to the above embodiments, those of ordinary skill in the art should understand that those skilled in the technical field can still modify the application or make equivalent replacements, and all technical solutions and their improvements that do not depart from the spirit and scope of the present application should be covered within the scope of the claims of the present application.

Claims

1. A gas-liquid separation device, characterized in that, It includes a housing (10), a head (20), and a heat exchange component (30), and the housing (10) is fixedly connected or limit-connected to the head (20); The housing (10) has a receiving cavity (11), and at least part of the heat exchange component (30) is located in the receiving cavity (11), The head (20) has a first interface (21), a second interface (22), an inlet (23), and an outlet (24); the heat exchange component (30) has a flow channel (301), one end of the flow channel (301) is communicated with the first interface (21), the other end of the flow channel (301) is communicated with the second interface (22), and both the inlet (23) and the outlet (24) are communicated with the receiving cavity (11).

2. The gas-liquid separation device according to claim 1, wherein, The first interface (21), the second interface (22), the inlet (23), and the outlet (24) are located on the same side of the head (20) and face the same direction.

3. The gas-liquid separation device according to claim 1 or 2, characterized in that, The gas-liquid separation device further includes a diversion pipe (40), the diversion pipe (40) has a pipe (401), the diversion pipe (40) is fixedly connected or limit-connected to the head (20), one port of the pipe (401) is communicated with the outlet (24), and the other port of the pipe (401) is communicated with the receiving cavity (11).

4. The gas-liquid separation device according to claim 3, characterized in that, Along the axial direction of the gas-liquid separation device, the diversion pipe (40) extends from the head (20) towards the receiving cavity (11), and the heat exchange component (30) includes a heat exchange part (33), and at least part of the heat exchange part (33) is located between the two ends of the diversion pipe (40).

5. The gas-liquid separation device according to claim 3, wherein, The diversion pipe (40) includes an extension part (41) and a bending part (42), the extension part (41) is fixedly connected to the head (20), the extension part (41) extends from the head (20) towards the receiving cavity (11), and the bending part (42) extends by bending from the extension part (41).

6. The gas-liquid separation device according to claim 3, wherein, The gas-liquid separation device has a first oil return hole (551), and the first oil return hole (551) is communicated with the receiving cavity (11); the diversion pipe (40) has a second oil return hole (43), the second oil return hole (43) is located at one end of the diversion pipe (40) relatively far from the head (20), and the second oil return hole (43) is communicated with the receiving cavity (11).

7. The gas-liquid separation device according to any one of claims 4 to 6, characterized in that The sizes of the first interface (21) and the second interface (22) are 6 mm to 9 mm, and the sizes of the inlet (23) and the outlet (24) are 14 mm to 16 mm.

8. The gas-liquid separation device according to claim 4, characterized in that The heat exchange component (30) includes a first end portion (31) and a second end portion (32). Both the first end portion (31) and the second end portion (32) have the flow channels (301). The flow channel (301) of the first end portion (31) communicates with the first interface (21), and the flow channel (301) of the second end portion (32) communicates with the second interface (22). One port of the heat exchange portion (33) communicates with the flow channel (301) of the first end portion (31), and the other port of the heat exchange portion (33) communicates with the flow channel (301) of the second end portion (32).

9. The gas-liquid separation device according to claim 8, characterized in that, Define the part of the heat exchange portion (33) in contact with the first end portion (31) as the first part (332); define the part of the heat exchange portion (33) in contact with the second end portion (32) as the second part (333). Along the axial direction of the gas-liquid separation device, the length of the second end portion (32) is greater than the length of the first end portion (31), and the first part (332) is closer to the head (20) than the second part (333).

10. The gas-liquid separation device according to claim 8, characterized in that, The gas-liquid separation device further includes a gas-liquid separation component (50). The gas-liquid separation component (50) includes an inner cylinder (51). The inner cylinder (51) is located in the accommodation cavity (11). The heat exchange component (30) is located between the inner cylinder (51) and the housing (10), and the guide pipe (40) is located between the inner cylinder (51) and the housing (10).

11. The gas-liquid separation device according to claim 10, characterized in that, The heat exchange portion (33) spirally surrounds the outer peripheries of the inner cylinder (51) and the guide pipe (40). The heat exchange portion (33) is unfolded into a strip shape and has a plurality of micro-channels (331).

12. The gas-liquid separation device according to claim 10, characterized in that, The inner cylinder (51) has an inner cavity (511) communicating with the accommodation cavity (11). The gas-liquid separation component (50) further includes a cover body (52). The inner cylinder (51) is fixedly connected or limitedly connected to the cover body (52). The cover body (52) has a first through hole (521), and the first through hole (521) communicates with the inner cavity (511) and the inlet (23).

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