CN211903392U

CN211903392U - Gas-liquid separator and thermal management system

Info

Publication number: CN211903392U
Application number: CN202020232814.9U
Authority: CN
Inventors: 董军启; 王美; 李理; 董海锋
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2020-11-10
Anticipated expiration: 2030-02-28

Abstract

The application discloses vapour and liquid separator, it includes: first barrel, second barrel, first water conservancy diversion portion, second water conservancy diversion portion, gas-liquid distribution subassembly and heat exchange assemblies, heat exchange assemblies sets up pipe portion and fin portion including equal spiral winding first barrel, and the cross sectional shape of pipe portion is the platykurtic, for the fin portion that whole slice encircleed first barrel and set up, the width of fin portion is less, and deformation when fin portion bends is also less, thereby can improve the phenomenon that fin portion changes and causes the heat transfer effect variation. The application also discloses a thermal management system comprising the gas-liquid separator.

Description

Gas-liquid separator and thermal management system

Technical Field

The application relates to the technical field of air conditioners, in particular to a gas-liquid separator and a thermal management system.

Background

In the air conditioning system, an intermediate heat exchanger is adopted to exchange heat between a high-temperature refrigerant from a condenser and a low-temperature refrigerant from an evaporator so as to increase the temperature of the refrigerant entering a compressor, and the temperature of the refrigerant before throttling can be reduced in a refrigeration mode, so that the refrigeration efficiency of the evaporator is improved. Most compressors can only compress gaseous refrigerant, and if liquid refrigerant enters the compressor, liquid impact can be caused, and the compressor can be damaged. In order to avoid the compressor being flooded, a gas-liquid separator may be installed before the compressor.

In the correlation technique, adopt the vapour and liquid separator who collects heat transfer and gas-liquid separation function as an organic whole, it includes interior barrel, outer barrel and is located the intermediate layer chamber between barrel and the outer barrel, the device that has the gas-liquid separation function is located the inboard of barrel, the device that has the heat transfer function is located the intermediate layer chamber, liquid refrigerant after the gas-liquid separation is stored in interior barrel, the refrigerant that gets into in the intermediate layer chamber carries out the heat exchange with the device that has the heat transfer function, reduce the refrigerant temperature that gets into throttling arrangement under the refrigeration mode, the refrigeration effect is improved, and can reduce compressor liquid hammer phenomenon. The device with heat transfer function is including the slice fin that encircles the interior barrel setting, and the slice fin is cylindric according to the whole crooked formation of assembly demand, and at crooked in-process, the fin can take place deformation, and the fin surface of keeping away from one side of interior barrel is stretched, and the fin surface of one side of being close to interior barrel is compressed, because the height of slice fin is great, deformation when the slice fin is whole crooked is also great, and the deformation size on fin surface can influence the heat transfer effect.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the related art, the present application provides a gas-liquid separator that can reduce deformation of fin portions, thereby improving heat exchange efficiency.

In order to achieve the purpose, the following technical scheme is adopted in the application:

a gas-liquid separator comprising: the gas-liquid heat exchanger comprises a first cylinder, a second cylinder, a first flow guide part, a second flow guide part, a gas-liquid distribution assembly and a heat exchange assembly; the first cylinder is positioned on the inner side of the second cylinder, the gas-liquid separator is provided with a first cavity and a second cavity which are communicated, the first cavity is positioned in the second cylinder, the first cavity is positioned outside the first cylinder and in the second cylinder, the second cavity at least comprises a space positioned in the first cylinder, and at least part of the heat exchange assembly is positioned in the first cavity; the gas-liquid distribution assembly comprises a flow guide pipe, the first flow guide part and the second cylinder are fixedly arranged, the first flow guide part is provided with a third cavity, the flow guide pipe is fixedly arranged with the first flow guide part, one end of the flow guide pipe is communicated with the third cavity, the other end of the flow guide pipe is communicated with the second cavity, and the third cavity is communicated with the first cavity; the second flow guide part is fixedly arranged with the second cylinder, and the first flow guide part and the second flow guide part are respectively positioned at two opposite sides of the second cylinder; the heat exchange assembly comprises a tube part and a fin part, the cross section of the tube part is flat, a plurality of circulation channels extending along the tube part are arranged in the tube part at intervals, and the tube part is spirally wound around the first cylinder; fin portion one side with the pipe portion is connected, and the opposite side is close to first barrel and/or the second barrel, fin portion spiral coils first barrel

This application heat exchange assembly's fin portion spiral coils first barrel among vapour and liquid separator, and for the fin portion of whole slice encircleing first barrel, the width of fin portion is less, and deformation when fin portion bends is also less, thereby can improve the phenomenon that fin portion becomes and causes the heat transfer effect variation.

Optionally, the tube portion and the fin portion are separately formed, the tube portion and the fin portion are spread to be in a band shape, the tube portion is fixedly connected with the fin portion through brazing or gluing, and the fin portion is fixed to at least one of one side of the tube portion close to the first cylinder and one side of the second cylinder.

Optionally, pipe portion and fin portion integrated into one piece are the heat transfer core, the heat transfer core is the tube-shape, the heat transfer core spiral coils first barrel, the heat transfer core expandes to be banded.

Optionally, the fin portion is located between the tube portion and the second cylinder, one side of the fin portion away from the tube portion is close to the second cylinder, and one side of the tube portion away from the fin portion is close to the first cylinder.

Optionally, the length of the tube portion is greater than its width, and the width of the tube portion is greater than its thickness; the helical winding direction of the fin portion is parallel to the helical winding direction of the tube portion, and a projection of the fin portion on the first tube falls in a projection of the tube portion on the first tube.

Optionally, the heat exchange assembly further includes a first collecting pipe and a second collecting pipe, one end of the pipe portion is inserted into the first collecting pipe, the other end of the pipe portion is inserted into the second collecting pipe, one end of the first collecting pipe is sealed, the other end of the first collecting pipe is connected with the first flow guide portion, one end of the second collecting pipe is sealed, the other end of the second collecting pipe is connected with the second flow guide portion, and each flow passage inside the pipe portion is communicated with an inner cavity of the first collecting pipe and an inner cavity of the second collecting pipe; along the axial direction of the gas-liquid separator, the first collecting pipe and the second collecting pipe are arranged at intervals, and the first collecting pipe and the second collecting pipe are respectively positioned on two opposite sides of the pipe part.

Optionally, at least part of the side wall of the first cylinder is recessed in a direction facing away from the second cylinder to form a first recess, and at least part of the first collecting pipe is accommodated in the first recess; and/or at least part of the side wall of the first cylinder is recessed towards the direction far away from the second cylinder to form a second recess, and at least part of the second collecting pipe is accommodated in the second recess.

Optionally, the axial direction of the first collecting pipe, the axial direction of the second collecting pipe, and the axial direction of the gas-liquid separator are arranged in parallel, and projections of the first collecting pipe and the second collecting pipe along the axial direction of the gas-liquid separator are overlapped.

Optionally, the fin portion includes a plurality of protruding structures arranged along a length direction of the fin portion, and the protruding structures are at least one of solid or hollow strip structures, solid or hollow corrugated structures, staggered tooth structures, louver structures, structures with holes, structures with protrusions, or structures with grooves on the surface. In view of the above-mentioned problems of the related art, the present application provides a thermal management system including the above-mentioned gas-liquid separator.

the utility model provides a heat management system, includes as above-mentioned any one the vapour and liquid separator, heat management system still includes evaporimeter, compressor, condenser and throttling arrangement, the gas-liquid distribution subassembly connect in between evaporimeter and the compressor, heat transfer subassembly connect in between condenser and the throttling arrangement, the export of evaporimeter with vapour and liquid separator's first water conservancy diversion portion is connected, the import of compressor with vapour and liquid separator's second water conservancy diversion portion is connected, the export of condenser with second water conservancy diversion portion is connected, throttling arrangement's import with first water conservancy diversion portion is connected.

The fin portion spiral of heat exchange assembly coils first barrel among the vapour and liquid separator among this application thermal management system, and for the fin portion of whole slice encircleing first barrel, the width of fin portion is less, and deformation when fin portion is crooked is also less, thereby can improve the phenomenon that fin portion changes and causes the heat transfer effect variation.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of a gas-liquid separator of the present application;

FIG. 2 is a schematic exploded perspective view of an embodiment of a gas-liquid separator of the present application;

FIG. 3 is an assembled perspective view of a first barrel and heat exchange assembly of an embodiment of a gas-liquid separator of the present application;

FIG. 4 is a cut-away perspective view of a heat exchange assembly of an embodiment of a gas-liquid separator of the present application;

FIG. 5 is a schematic view of a cutaway perspective view of an embodiment of a gas-liquid separator of the present application;

FIG. 6 is a schematic top view of an embodiment of a gas-liquid separator of the present application, wherein the first flow guide is not shown;

FIG. 7 is a schematic perspective view of a first deflector according to an embodiment of the present disclosure;

FIG. 8 is a schematic perspective view of a second deflector according to an embodiment of the present disclosure;

FIG. 9 is a schematic perspective view of a first barrel and heat exchange assembly of another embodiment of a gas-liquid separator of the present application;

FIG. 10 is a schematic perspective view of a first barrel and heat exchange assembly of yet another embodiment of a gas-liquid separator of the present application;

fig. 11 is a schematic connection diagram of an embodiment of the thermal management system of the present application, in which the direction indicated by the arrow is the refrigerant flowing direction, and the thermal management system is in the cooling mode.

Wherein: 100. a gas-liquid separator; 200. an evaporator; 300. a compressor; 400. a condenser; 500. a throttling device;

10. a first chamber; 20. a second chamber; 30. a third chamber; 40. a channel;

1. a first cylinder; 11. a first recess; 12. a second recess;

2. a second cylinder;

3. a first flow guide part; 31. a first member; 32. a second component; 321. a first end face; 322. a second end face; 323. a first step surface; 324. a first sidewall surface; 325. a second sidewall surface; 33. a first through hole; 34. a second through hole; 35 a third via hole; 36. a fifth through hole;

4. a second flow guide part; 41. a third component; 42. a fourth component; 43. a fourth via hole; 44. a sixth through hole;

5. a gas-liquid distribution assembly; 51. a flow guide pipe; 52. a connecting pipe; 53. a sleeve; 54. a first plate; 541. a main body portion; 542. an extension portion;

6. a heat exchange assembly; 61. a first current collecting member; 62. a second current collecting member; 63. a heat exchange core body; 631. a tube portion; 632. a fin portion;

71. a support member; 72. a first connecting member.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the terms "first," "second," and the like as used in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Similarly, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one; "plurality" means two or more than two. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items.

Hereinafter, a gas-liquid separator according to an exemplary embodiment of the present application will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments can be supplemented or combined with each other without conflict.

Fig. 1 is a schematic perspective assembly view of a gas-liquid separator 100 according to an exemplary embodiment of the present application. The gas-liquid separator 100 can be applied to various thermal management systems, can be applied to various fields such as household air conditioners, commercial air conditioners, automobiles and the like, and particularly can be applied to air conditioning systems of electric automobiles.

According to an embodiment of the gas-liquid separator 100 of the present application, as shown in fig. 1 to 8, the gas-liquid separator 100 includes a first cylinder 1, a second cylinder 2, a first guiding portion 3, a second guiding portion 4, a gas-liquid distribution assembly 5, and a heat exchange assembly 6.

In this embodiment, the first cylinder 1 and the second cylinder 2 are both hollow cylinders with a substantially circular cross section, the outer diameter of the first cylinder 1 is smaller than the inner diameter of the second cylinder 2, and the first cylinder 1 is located inside the second cylinder 2. The gas-liquid separator 100 has a first chamber 10 and a second chamber 20 which are communicated with each other, the first chamber 10 is located in the second cylinder 2, the first chamber 10 is located outside the first cylinder 1, and the second chamber 20 at least includes a space located in the first cylinder 1. A second chamber 20 is formed in the first cylinder 1, and the gas-liquid distribution assembly 5 is at least partially located in the second chamber 20. The first cavity 10 is a cavity defined by the outer wall surface of the first cylinder 1 and the inner wall surface of the second cylinder 2, and at least part of the heat exchange assembly 6 is positioned in the first cavity 10.

The first flow guide part 3 and the second flow guide part 4 are respectively fixedly arranged with the second cylinder 2, one end face of the second cylinder 2 surrounds part of the first flow guide part 3, and the other end face of the second cylinder 2 surrounds part of the second flow guide part 4; one end face of the first cylinder 1 is abutted against the first flow guide part 3, and the other end face is abutted against the second flow guide part 4. In some embodiments, the first flow guiding part 3 may be connected to the first cylinder 1 and the second cylinder 2, or may be abutted by a sealing structure; the second guide portion 4 may be connected to the first cylinder 1 and the second cylinder 2, or may be abutted by a sealing structure. The first flow guiding part 3 is provided with a third cavity 30, the gas-liquid distribution assembly 5 is fixedly arranged with the first flow guiding part 3, the gas-liquid distribution assembly 5 is communicated with the second cavity 20, the third cavity 30 and the outside of the gas-liquid separator 100, and the third cavity 30 is communicated with the first cavity 10.

In the present embodiment, referring to fig. 7, the first flow guide portion 3 includes a first member 31 and a second member 32 which are arranged at an interval, a projection of the first member 31 completely falls within a projection of the second member 32 along an axial direction of the gas-liquid separator 100, the first member 31 is fixedly arranged with the first cylinder 1, the second member 32 is fixedly arranged with the second cylinder 2, and the third chamber 30 includes at least a space between the first member 31 and the second member 32. The first member 31 includes a first through hole 33 communicating with the third chamber 30 and a second through hole 34 communicating with the second chamber 20, and the second member 32 includes a third through hole 35 communicating with the outside of the gas-liquid separator 100.

The gas-liquid distribution assembly 5 includes a guide tube 51 and a connection tube 52, one end of the connection tube 52 is fixedly disposed with the first member 31, the other end is fixedly disposed with the second member 32, the guide tube 51 is fixedly disposed with the first member 31, at least a portion of the guide tube 51 is located in the second chamber 20, and at least a portion of the connection tube 52 is located in the third chamber 30. The inner cavity of the delivery pipe 51 is communicated with the first through hole 33, and the inner cavity of the connecting pipe 52 is communicated with the second through hole 34 and the third through hole 35.

The projection of the first cylinder 1 falls entirely within the projection of the first member 31 in the axial direction of the gas-liquid separator 100, and the outer contour shape of the first member 31 is substantially the same as the cross-sectional shape of the first cylinder 1. The upper end surface of the first cylinder 1 is fixedly connected to the first member 31 by brazing. The first through hole 33 and the second through hole 34 are each opened at opposite side surfaces of the first member 31.

The second member 32 includes a first end face 321 distant from the second cylinder 2, a second end face 322 opposite to the first end face 321, and a first step face 323, and the first step face 323 divides the side wall face of the second member 32 into two sections, i.e., a first side wall face 324 and a second side wall face 325. The first step face 323 is connected to the first sidewall face 324 in an extending manner and connected to the second sidewall face 325 in an extending manner. The upper end surface of the second cylinder 2 abuts against the first step surface 323. In some embodiments, a portion of the inner wall surface of the second cylinder 2 is disposed in abutment with the second sidewall surface 325. The third through hole 35 is formed with an opening at both the first end face 321 and the second end face 322.

The gas-liquid separator 100 further includes a pipe connection assembly provided in connection with the second member 32. The pipeline connecting assembly comprises a first connecting piece 72 with a first channel, a second connecting piece (not shown) with a second channel, a fastening piece (not shown) for connecting the first connecting piece 72 and the second connecting piece, and a sealing piece (not shown) arranged between the first connecting piece 72 and the second connecting piece, when the first connecting piece 72 is connected with the second connecting piece through the fastening piece, the first channel is communicated with the second channel, the sealing piece is compressed, and the connecting position of the first channel and the second channel is arranged in a sealing mode through the sealing piece. One of the first connecting member 72 and the second connecting member is provided in connection with the second member 32, and the other is provided in connection with the pipe, and the first passage and the second passage communicate the third through hole 35 with the outside of the gas-liquid separator 100. When the first connector 72 and the second connector are fixedly connected by the fastener, the second chamber 20 is communicated with the external pipe, and the gas-liquid separator 100 is connected into the thermal management system. It should be understood that in the present application, the pipe connecting assembly is connected to the second component 32, and that the first connecting member 72 or one of the second connecting members may be integrally formed with the second component 32 (see fig. 2), or the pipe connecting assembly and the second component 32 may be separately formed and then connected together.

In some embodiments, with reference to fig. 5 and 6, the first member 31 is provided with an extension protruding towards the second chamber 20, the inner side wall of the extension forming part of the inner side wall of the first through hole 33, the inner side wall of the extension being arranged in connection with part of the outer side wall of the draft tube 51, increasing the reliability of the connection of the draft tube 51 with the first member 31. Optionally, the first member 31 is provided with an extension protruding toward the third chamber 30, an inner sidewall of the extension forms a part of an inner sidewall of the second through hole 34, and an inner sidewall of the extension is connected with a part of an outer sidewall of the connection pipe 52, so as to increase the reliability of the connection pipe 52 and the first member 31.

In this embodiment, referring to fig. 8, the second flow guiding portion 4 includes a third member 41 and a fourth member 42 that are disposed at an interval, the third member 41 covers an end of the second cylinder 2 away from the first flow guiding portion 3, and the fourth member 42 covers an end of the first cylinder 1 away from the first flow guiding portion 3. In the axial direction of the gas-liquid separator 100, the projection of the third member 41 falls entirely within the projection of the second cylinder 2, and the projection of the first cylinder 1 falls entirely within the projection of the fourth member 42. At least part of the outer wall surface of the third member 41 is sealingly connected to part of the inner wall surface of the second cylinder 2. In other embodiments, the third member 41 may be similar in structure to the second member 32, the third member 41 having a stepped surface against which the second cylinder 2 abuts, the projection of the second cylinder 2 falling entirely in the projection of the third member 41 in the axial direction of the gas-liquid separator 100; the fourth member 42 may be similar in structure to the second member 32, and the fourth member 42 has a stepped surface against which the first cylinder 1 abuts, and a projection of the first cylinder 1 falls completely into a projection of the fourth member 42 in the axial direction of the gas-liquid separator 100.

The third member 41 has a fourth through hole 43 connecting the outside of the gas-liquid separator 100 and the first chamber 10, and the fourth through hole 43 is formed with openings on both side surfaces of the third member 41 opposite to each other. In some embodiments, the opening formed on one side of the fourth through hole 43 close to the first cavity 10 is larger than the opening formed on one side of the fourth through hole 43 far from the first cavity 10, and is characterized in that the fourth through hole 43 is divided into two sections, one section far from the first cavity 10 is a first section in a substantially straight cylinder shape, one section near the first cavity 10 is a second section in a substantially horn shape, the cross section of one end of the second section has the same contour size as that of the cross section of the first section, and the cross section of the other end of the second section has a contour size larger than that of the cross section of the first section.

The gas-liquid separator 100 is provided with a support member 71 abutting between the third member 41 and the fourth member 42, and in the present embodiment, as shown in fig. 2 and 4, the support member 71 is a substantially straight cylindrical body, and the third member 41 is provided with a groove for accommodating an end portion of the support member 71, thereby increasing the stability of the support member 71 supporting the third member 41 and the fourth member 42. In other embodiments, the support member 71 may be a protrusion formed by extending at least one of the third member 41 or the fourth member 42 toward each other, the protrusion is located between the third member 41 and the fourth member 42, and supports the third member 41 and the fourth member 42, and the number of the protrusions is at least one.

In some other embodiments, the second guide portion 4 may only include the third member 41 covering the second cylinder 2, and the first cylinder 1 includes a cylinder and a bottom cover integrally formed with the cylinder. The support 71 abuts between the third member 41 and the bottom cover. The matching relationship among the bottom cover, the support 71 and the third member 41 is similar to the matching relationship among the third member 41, the fourth member 42 and the support 71, and thus the description is omitted.

The third member 41 is connected to the pipe connection assembly. When the first connector 72 and the second connector are fixedly connected by the fastener, the first cavity 10 is communicated with the outside of the gas-liquid separator 100, and the gas-liquid separator 100 is connected to the thermal management system.

In this embodiment, when the sealing device is mounted, the end surface of one end of the first tube 1 abuts against the first member 31 and is fixedly connected thereto by brazing, and the end surface of the other end of the first tube 1 abuts against the fourth member 42 and is fixedly connected thereto by brazing, thereby sealing the first tube 1; an end surface of one end of the second cylinder 2 abuts against the first step surface 323, an inner wall surface of the second cylinder 2 is welded to the second side wall surface 325, and an inner wall surface of the other end of the second cylinder 2 is welded to an outer wall surface of the third member 41, thereby sealing the second cylinder 2.

In the present embodiment, referring to fig. 2 and 5, the gas-liquid distribution assembly 5 includes a flow guide pipe 51, a connecting pipe 52, a sleeve 53, and a first plate 54, wherein the sleeve 53 is disposed outside the flow guide pipe 51, the first plate 54 has a through hole, one end of the flow guide pipe 51 passes through the through hole to enable the first plate 54 to be disposed on the upper portion of the flow guide pipe 51, and the first plate 54 is disposed above the sleeve 53. After one end of the duct 51 passes through the through hole, the end surface thereof abuts against the lower surface of the first member 31, and the inner cavity of the duct 51 communicates with the first through hole 33.

The first plate 54 includes a body portion 541 sleeved on the draft tube 51 and an outer extension portion 542 extending downward along an outer edge of the body portion 541. A gap is formed between the upper surface of the body 541 and the first member 31, so that the first fluid can flow from the connection pipe 52 into the second chamber 20. A gap is formed between the outer wall surface of the extending portion 542 and the inner wall surface of the first cylinder 1, so that the first fluid continues to flow downward after entering the second chamber 20 from the connecting pipe 52. A gap is formed between the lower surface of the body portion 541 and the upper end surface of the sleeve 53, a gap is formed between the inner wall surface of the extension portion 542 and the outer wall of the sleeve 53, and one end of the sleeve 53 close to the first plate 54 is opened so that the second chamber 20 communicates with the inner cavity of the sleeve 53. The diameter of the body portion 541 is smaller than the inner diameter of the first cylinder 1 and larger than the outer diameter of the sleeve 53.

The inner wall surface of the sleeve 53 is spaced a predetermined distance from the outer wall surface of the draft tube 51 such that the passage 40 for the first fluid to flow is formed between the inner wall surface of the sleeve 53 and the outer wall surface of the draft tube 51. The end of the cannula 53 remote from the first plate 54 is sealed so that the lumen of the cannula 53 is isolated from the second lumen 20 at the end remote from the first plate 54. A gap is left between the inner wall surface of the lower end of the draft tube 51 and the lower end surface of the sleeve 53 to communicate the passage 40 with the inner cavity of the draft tube 51.

In the present embodiment, the sleeve 53, the duct 51 and the connecting tube 52 are hollow cylinders with a substantially circular cross section. The delivery tube 51 is connected at one end to the first member 31 and communicates with the third chamber 30, and is open at the other end and communicates with the passage 40. The connection pipe 52 has one end connected to the first member 31 and communicates with the second chamber 20, and the other end connected to the second member 32 and communicates with the outside of the gas-liquid separator 100. One end of the cannula 53 adjacent the fourth member 42 is self-sealing and the other end is open and in communication with the second lumen 20. The inside wall of the sleeve 53 near the one end of the fourth component 42 is provided with a limiting structure 531, and the end of the draft tube 51 extends into the limiting structure, so that the sleeve 53 and the draft tube 51 can be fixed and used for limiting the displacement of the sleeve 53, but the design of the limiting structure does not affect the flow of the first fluid, and referring to fig. 5, the limiting structure 531 is three protrusions uniformly distributed along the circumferential direction of the inner wall of the sleeve 53.

In some embodiments, the sleeve 53 can be fixed only by the limiting structure, the sleeve 53 can be connected with the first plate 54 to fix the sleeve 53, and the sleeve 53 can be connected with the fourth component 42 to fix the sleeve 53.

In some embodiments, the side wall of the draft tube 51 near the end of the first member 31 is opened with a balance hole (not shown) for communicating the passage 40 with the inner cavity of the draft tube 51, and the balance hole is used for reducing the phenomenon that the liquid first fluid is sucked into the compressor 300 due to the pressure difference when the compressor 300 is stopped. The end of the sleeve 53 near the fourth member 42 may be provided with an oil return hole (not shown) having a bore diameter matched to the capacity of the thermal management system, so that the ratio of the refrigerant oil returning to the compressor 300 to the first fluid is better, and a strainer may be provided to prevent impurities from entering the compressor 300 through the oil return hole.

In some other embodiments, the sleeve 53 may be sealingly secured to the fourth member 42 at one end and be open at the other end. The sleeve 53 may also be sealingly fixed to the fourth part 42 at one end and to the first plate 54 at the other end, but the end of the sleeve 53 near the first plate 54 is provided with an opening communicating the lumen of the sleeve 53 with the second chamber 20. The cannula 53 may also be sealed to itself at one end but secured to or connected to the fourth member 42 and open at the other end or connected to the first plate 54, but with the lumen of the cannula 53 communicating with the second lumen 20 at the end adjacent the first plate 54. The sleeve 53 may also be fixed to the first plate 54 at one end and sealed to itself and not in contact with the fourth part 42 at the other end, the lumen of the sleeve 53 communicating with the second chamber 20 at the end close to the first plate 54.

It is to be understood that, when the gas-liquid separator 100 is not provided with the fourth member 42 but the first barrel 1 has a bottom cover, the fitting relationship between the sleeve 53 and the bottom cover is similar to the fitting relationship between the sleeve 53 and the fourth member 42, and will not be described in detail herein.

In some other embodiments, the duct 51 is U-shaped and has one end higher than the other, the higher end connected to the first member 31 and the lower end open. The open end is spaced a predetermined distance from the lower end face of the first member 32. A connecting pipe 52 is arranged in the first cylinder 1, one end of the connecting pipe is connected to the second part 32, the other end of the connecting pipe passes through the second through hole 34 and is communicated with the second cavity 20, the lower end surface of the connecting pipe 52 is lower than the open end, so that after the gas-liquid mixed refrigerant enters the second cavity 20 through the connecting pipe 52, the liquid refrigerant sinks due to gravity, the gas refrigerant floats upwards and flows into the U-shaped guide pipe 51 from the open end, and then enters the first cavity 10 through the third cavity 30.

When the gas-liquid separator 100 is in operation, the flow direction of the first fluid is as follows: the first fluid flows into the second chamber 20 from the third through hole 35 through the connection pipe 52, continues to flow downward from the gap between the outer extension portion 542 and the inner wall surface of the first cylinder 1, then flows sequentially through the gap between the inner wall surface of the outer extension portion 542 and the outer wall surface of the sleeve 53, and the gap between the lower surface of the body portion 541 and the upper end surface of the sleeve 53, enters the passage 40 from the upper end of the sleeve 53, and continues to flow downward in the passage 40. The first fluid then enters the draft tube 51 from the lower end of the draft tube 51 and continues to flow upward in the draft tube 51. The first fluid then enters the third chamber 30 from the first through hole 33, enters the first chamber 10 from the gap between the first member 31 and the second member 32, and continues to flow downward. Finally, the first fluid flows out of the gas-liquid separator 100 through the fourth through-hole 43 of the third member 41 to enter the compressor 300. At this point, the first fluid completes the whole flow of gas-liquid separation and heat exchange. Wherein the first fluid exchanges heat with the heat exchange assembly 6 during flowing in the first cavity 10.

It should be noted that the first fluid entering the second chamber 20 from the first guide portion 3 is generally a gas-liquid mixed first fluid. The first fluid in the liquid state sinks due to gravity after entering the second chamber 20, so that the first fluid in the liquid state is stored in the first cylinder 1, while the first fluid in the gaseous state floats up and enters the passage 40 from the upper end of the sleeve 53 under the suction action of the compressor 300, so that the first fluid in the liquid state remains at the bottom of the first cylinder 1, and the first fluid in the gaseous state flows through the third chamber 30, the first chamber 10, and then flows out of the gas-liquid separator 100 from the second flow guide portion 4, so as to realize gas-liquid separation of the first fluid.

In the present embodiment, the heat exchange assembly 6 includes a first header 61, a second header 62 and a heat exchange core 63. The second part 32 of the first guide part 3 comprises a fifth through hole 36 connecting the outside of the gas-liquid separator 100 and the heat exchange assembly 6, and the third part 41 of the second guide part 4 comprises a sixth through hole 44 connecting the outside of the gas-liquid separator 100 and the heat exchange assembly 6. In the present embodiment, one end of the first header 61 is connected to the second member 32, one end of the second header 62 is connected to the third member 41, and the first header 61 and the second header 62 are arranged in the axial direction of the gas-liquid separator 100. One end of the first collecting pipe 61 is sealed and the other end is communicated with the fifth through hole 36, and one end of the second collecting pipe 62 is sealed and the other end is communicated with the sixth through hole 44. At least part of the side wall of the first cylinder 1 is recessed to form a first recess 11 facing away from the second cylinder 2, and at least part of the first collecting pipe 61 is accommodated in the first recess 11. At least a part of the side wall of the first cylinder 1 is recessed to form a second recess 12 facing away from the second cylinder 2, and at least a part of the second header 62 is accommodated in the second recess 12. In the axial direction of the gas-liquid separator 100, the portion of the first member 31 corresponding to the first recess 11 and the portion of the fourth member 42 corresponding to the second recess 12 are provided with relief portions (not numbered) to facilitate connection and assembly of the first header 61 and the second header 62 with the second member 32 and the third member 41, respectively. Alternatively, the first recess 11 and the second recess 12 may communicate with each other or be spaced apart from each other. Alternatively, referring to fig. 9, the first cylinder 1 may not be provided with the first recess 11 and the second recess 12.

The first collecting pipe 61 and the second collecting pipe 62 are arranged along the axial direction of the gas-liquid separator 100, and it should be understood here that the projections of the first collecting pipe 61 and the second collecting pipe 62 along the axial direction of the gas-liquid separator 100 may be coincident or non-coincident, that is, the axis of the first collecting pipe 61 and the axis of the second collecting pipe 62 may be coincident or non-coincident, and may be parallel or non-parallel.

The heat exchange core 63 is integrally formed, one end of the heat exchange core 63 is inserted into the first collecting pipe 61, the other end of the heat exchange core 63 is inserted into the second collecting pipe 62, and the first collecting pipe 61 and the second collecting pipe 62 are respectively located on two opposite sides of the heat exchange core 63 along the axial direction of the gas-liquid separator 100. Referring to fig. 2-5, heat exchange core 63 is one and is banded after expanding, and heat exchange core 63 coils partial first barrel 1 setting with spiral mode, and heat exchange core 3 after coiling is roughly the tube-shape, and heat exchange core 63 overlaps the outside of locating first barrel 1, and a side of heat exchange core 63 is close to first barrel 1 and sets up, and the another side is close to second barrel 2 and sets up.

First pressure manifold 61 and second pressure manifold 62 are located the relative both sides of heat transfer core 63 respectively, and first pressure manifold 61 and second pressure manifold 62 are located the relative both sides of first barrel 1 respectively promptly, and first pressure manifold 61 and second pressure manifold 62 are spaced apart by heat transfer core 63, for the structure that heat transfer core 63 surrounds first barrel 1, first pressure manifold 61 and second pressure manifold 62 length reduce, and first pressure manifold 61 and second pressure manifold 62 occupation space reduce, the corresponding volume that can increase first barrel 1.

The heat exchanging core 63 integrally formed includes a tube portion 631 and a fin portion 632, one side of the fin portion 632 far from the tube portion 631 is close to or attached to the inner side wall of the second cylinder 2, and one side of the tube portion 631 far from the fin portion 632 is close to or attached to the outer side wall of the first cylinder 1. Along the direction perpendicular to the axis of the gas-liquid separator 100, the heat exchange core 63 is not overlapped, and after the heat exchange core 63 is assembled with the first cylinder 1, the second cylinder 2, the fin portion 632, the tube portion 631 and the first cylinder 1 are sequentially arranged from outside to inside.

The pipe portion 631 has a length greater than its width, and the pipe portion 631 has a width greater than its thickness, so as to be flat, i.e., the cross-sectional shape of the pipe portion 631 is flat. After heat exchange core 62 is assembled, the thickness direction of pipe portion 631 is perpendicular to the axial direction of first cylinder 1. The pipe portion 631 has one end connected to the first header 61 and the other end connected to the second header 62. The pipe portion 631 includes a plurality of flow passages extending along the pipe portion 631, the plurality of flow passages are provided at intervals from each other, and each flow passage communicates with the inner cavity of the first header 61 and the inner cavity of the second header 62. Compared with a circular tube with only one flow channel, the circular tube has a flat structure with a plurality of flow channels, the flow velocity of the second fluid is relatively low, the heat exchange area is large, and the good heat exchange performance can be ensured in the tube part 631 with relatively small volume; for the structure that the flat pipe set up along first barrel circumferential direction around first barrel 1, the control of the plane degree of the tip of flat pipe can be reduced, reduce the flat pipe and pressure manifold complex degree of difficulty. The side of the fin portion 632 far away from the tube portion 631 is close to or attached to the inner side wall of the second cylinder 2, so as to guide the first fluid to fully contact with the fin portion 632, thereby further improving the heat exchange performance.

Pipe portion 631 is the platykurtic, and the thickness direction of pipe portion 631 sets up with the axis direction of first barrel 1 is perpendicular, along the direction of the axis of the first barrel 1 of perpendicular to, heat exchange assembly 6's thickness is less, and the volume of first barrel 1 is great relatively, and the refrigerant volume that first barrel 1 can be stored is more relatively, and on the other hand inside the setting of a plurality of mutual intervals of pipe portion 631 have and follow the circulation channel that pipe portion 631 extends, can reach the purpose that increases heat exchange assembly 6's heat transfer capacity. Under the unchangeable condition of 2 diameters of second barrel, this application can make heat transfer performance obtain guaranteeing when reducing the volume of the first barrel 1 of volume increase of heat exchange assembly 6 to make heat transfer performance and refrigerant storage capacity reach the state of relative equilibrium.

Referring to fig. 3, the fin portion 632 includes a plurality of solid bar-shaped structures extending in a direction parallel to the axis of the gas-liquid separator 100, and the plurality of bar-shaped structures are juxtaposed in the longitudinal direction of the heat exchange core 63. After the heat exchange core 63 is spirally wound around the first cylinder 1, along the direction parallel to the axis of the gas-liquid separator 100, the bar structures outside each layer of the tube 631 are arranged in parallel and the projections thereof coincide with each other, so that the purpose of guiding the first fluid to flow from top to bottom and increasing the heat exchange effect of the first fluid and the heat exchange core 63 is achieved. In some embodiments, along the direction parallel to the axis of the gas-liquid separator 100, the projections of the strip structures outside the partial pipe portions 631 are not overlapped, so that the turbulent flow can be achieved, and the heat exchange effect can be further enhanced. In some embodiments, the protrusions, the grooves or the openings are arranged on the strip-shaped structures, so that the turbulent flow is realized, and the heat exchange effect is further enhanced.

In other embodiments, the solid bar-shaped structure of the fin portion 632 may have other shapes, for example, a hollow bar-shaped structure, a solid or hollow corrugated structure, a staggered tooth structure, a louver structure, any structure with an opening, any structure with a protrusion, or any structure with a groove on the surface, etc., as long as the purpose of guiding the flow of the first fluid and increasing the heat exchange effect of the first fluid with the heat exchange core 63 can be achieved.

Heat exchange core 63 integrated into one piece, heat exchange core 63 assembles the completion, can accomplish the assembly of pipe portion 631 and bellying 632 simultaneously, for pipe portion 631 and bellying 632 disconnect-type structure, can tie up the multistep operation such as welding between the two with the independent assembly of pipe portion 631, the independent assembly of bellying 632, pipe portion 631 and bellying 632, reduces to this operation of assembly of heat exchange core 63, can reduce the cost of labor, and avoid both to appear the phenomenon that breaks away from.

When the fin portion 632 is spirally wound around the first cylinder 1, the fin portion is deformed due to bending, the distance between two adjacent bar-shaped structures is increased, and the heat exchange effect is deteriorated due to the excessively increased distance. The expansion of heat exchange core 63 is banded in this application, and the width of fin portion 632 is less relatively promptly, and the deformation that fin portion 632 spiral winding bending produced is less, and the interval between two adjacent bar structures increases also less promptly, reduces the influence that deformation when fin portion 632 bends caused to the heat transfer effect.

When the gas-liquid separator 100 is in operation, the flow direction of the second fluid in the cooling mode is as follows: the second fluid flows into the heat exchange core 63 through the second header 62 from the sixth through hole 44, flows to the first header 61 along the heat exchange core 63, and finally flows out of the gas-liquid separator 100 from the fifth through hole 36; the flow direction of the second fluid in the heating mode is as follows: the second fluid flows into the heat exchange core 63 through the first header 61 from the fifth through hole 36, flows along the heat exchange core 63 to the second header 62, and finally flows out of the gas-liquid separator 100 from the sixth through hole 44. So far, the second fluid completes the whole process of heat exchange. Wherein, in the first chamber 10, the second fluid flowing in the chamber of the heat exchange core 63 exchanges heat with the first fluid flowing in the first chamber 10.

When the gas-liquid separator 100 works, due to the action of gravity, the first liquid can be stored at one end of the first cylinder 1 close to the second flow guiding part 4, and the first gaseous liquid flows into the first cavity 10 through the gas-liquid distribution assembly 5 to exchange heat with the heat exchange assembly 6, and then flows out of the gas-liquid separator 100. Since the heat management system requires different refrigerant charge amounts under different working conditions, in the related art, the gas-liquid separator 100 stores the liquid refrigerant, and then adjusts the refrigerant charge amount of the heat management system by adjusting whether to lead out the liquid refrigerant and adjusting the amount of the liquid refrigerant to be led out.

In the application, if the stored liquid first fluid exchanges heat with the heat exchange component 6 or the first fluid in the first cavity 10, the stored liquid first fluid may be heated to a gaseous state and enter a heat exchange cycle of the heat management system, which may affect the heat exchange performance of the heat management system, so that one end of the first cylinder close to the second flow guide part 4 may not wind the heat exchange core 63 or wind the heat exchange core 63 sparsely, thereby reducing the heat exchange between the liquid first fluid in the first cylinder 1 and the heat exchange component 6 or the first fluid in the first cavity 10, and ensuring the normal operation of the heat management system, thereby ensuring the heat exchange performance of the heat management system.

According to another embodiment of the gas-liquid separator 100 of the present application, as shown in fig. 9, this embodiment is different from the above-described embodiments in that the tube portions 631 and the fin portions 632 are separately formed and then assembled together, and the tube portions 631 and the fin portions 632 are respectively formed in a band shape after being expanded, and optionally, the tube portions 631 are microchannel flat tubes. In assembling, the separately formed tube portion 631 is spirally wound around the outer side of the first cylinder 1, the fin portion 632 is then spirally wound around the outer side of the tube portion 631, the tube portion 631 and the fin portion 632 are then bound together, and the two are soldered or glued together. Only one side of the fin portion 632 has a strip structure, and the other side without the strip structure is attached to the tube portion 631. The projection of the fin portion 632 on the first cylinder 1 coincides with the projection of the tube portion 631 on the first cylinder 1, that is, the tube portion 631 and the fin portion 632 have the same width, which facilitates assembly. In some embodiments, the widths of the tube portions 631 and the fin portions 632 may also be different, adjusted according to design requirements. The parts of this embodiment that are the same as the above embodiments will not be described again.

According to another embodiment of the gas-liquid separator 100 of the present application, as shown in fig. 10, the embodiment is different from the above-described embodiment in that the first collecting pipe 61 includes a straight section and a curved section, the extending direction of the straight section of the first collecting pipe 61 is parallel to the axial direction of the gas-liquid separator 100, and the curved section of the first collecting pipe 61 connects the straight section of the first collecting pipe 61 and the second member 32, so that the assembly of the first collecting pipe 61 can be completed without increasing the outer diameter of the second member 32; the second header 62 also includes a straight line section and a bent section, the extending direction of the straight line section of the second header 62 is parallel to the axial direction of the gas-liquid separator 100, and the bent section of the second header 62 connects the straight line section of the second header 62 and the third member 41, so that the assembly of the second header 62 can be completed without increasing the outer diameter of the third member 41. The parts of this embodiment that are the same as the above embodiments will not be described again.

Fig. 11 is a schematic connection diagram of a thermal management system according to an exemplary embodiment of the present application, where the direction indicated by the arrow is the refrigerant flow direction and the thermal management system is in a cooling mode. Referring to fig. 11, a thermal management system includes a gas-liquid separator 100, an evaporator 200, a compressor 300, a condenser 400, and a throttling device 500. The evaporator 200 is connected to the gas-liquid distribution module 5 through the first guide portion 3 of the gas-liquid separator 100, an outlet of the evaporator 200 is communicated with the third through hole 35, the compressor 300 is connected to the gas-liquid distribution module 5 through the second guide portion 4 of the gas-liquid separator 100, and an inlet of the compressor 300 is communicated with the fourth through hole 43. The condenser 400 is connected with the heat exchange assembly 6 through the second flow guide part 4 of the gas-liquid separator 100, the outlet of the condenser 400 is communicated with the sixth through hole 44, the throttling device 500 is connected with the heat exchange assembly 6 through the first flow guide part 3 of the gas-liquid separator 100, and the inlet of the throttling device 500 is communicated with the fifth through hole 36. In the refrigeration mode, a high-temperature gaseous refrigerant flowing out of the compressor 300 exchanges heat through the condenser 400, flows through the heat exchange assembly 6 in the gas-liquid separator 100, is throttled by the throttling device 500, enters the evaporator 200 for heat exchange, enters the gas-liquid two-phase refrigerant flowing out of the evaporator 200 into the gas-liquid separator 100, is subjected to gas-liquid separation by the gas-liquid separator 100, and then flows into the compressor 300, so that one heat exchange cycle is completed. In the gas-liquid separator 100, under the action of the gas-liquid distribution assembly 5, the liquid refrigerant is stored in the first cylinder 1, the gaseous refrigerant exchanges heat with the heat exchange assembly 6, the temperature of the gaseous refrigerant rises after heat exchange, and the temperature of the refrigerant flowing in the heat exchange assembly 6 decreases, so that the temperature of the refrigerant entering the compressor 300 rises, and the temperature of the refrigerant flowing into the throttling device 500 decreases, thereby improving the refrigeration effect of the evaporator 200.

In the heating mode, a high-temperature gaseous refrigerant flowing out of the compressor 300 enters the condenser 400 for heat exchange, is throttled by the throttling device 500 and then flows through the heat exchange assembly 6 in the gas-liquid separator 100, then enters the evaporator 200 for heat exchange, a gas-liquid two-phase refrigerant flowing out of the evaporator 200 enters the gas-liquid separator 100, is subjected to gas-liquid separation by the gas-liquid separator 100, and then flows into the compressor 300, so that a heat exchange cycle is completed.

Because heat exchange assembly 6 and gas-liquid distribution assembly 5 set up in vapour and liquid separator 100 simultaneously, under the unchangeable circumstances of second barrel 2 diameter, heat exchange assembly 6's bulky volume that then can lead to first barrel 1 is little, the refrigerant volume that first barrel 1 stored is little, heat exchange assembly 6's small, first barrel 1's volume is big, then the refrigerant volume that first barrel 1 stored is many, but heat exchange assembly 6's heat transfer performance can worsen, through being the platykurtic with pipe portion 631 setting, the thickness direction of pipe portion 631 sets up with first barrel 1's axis direction is perpendicular, and set up the circulation passageway that a plurality of mutual intervals set up inside pipe portion 631, can be when reducing heat exchange assembly 6's volume and increase first barrel 1's volume, make heat transfer performance obtain guaranteeing, thereby make heat transfer performance and refrigerant storage capacity reach relative balanced state.

It should be understood that the first fluid and the second fluid are both refrigerants, the first fluid is a refrigerant flowing out of the evaporator 200, and the second fluid is a refrigerant flowing out of the condenser 400 or flowing out of the throttling device 500.

As used herein, "substantially" and "approximately" mean that the degree of similarity is greater than 50%. For example, the first cylinder 1 is approximately cylindrical, which means that the first cylinder 1 is hollow and cylindrical, the side wall of the first cylinder 1 may be provided with a concave part or a convex structure, the cross section of the first cylinder 1 has a profile which is not circular, but 50% of the profile is formed by an arc line.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. A gas-liquid separator (100), comprising: the device comprises a first cylinder (1), a second cylinder (2), a first flow guide part (3), a second flow guide part (4), a gas-liquid distribution assembly (5) and a heat exchange assembly (6);

the first cylinder (1) is positioned at the inner side of the second cylinder (2), the gas-liquid separator (100) is provided with a first cavity (10) and a second cavity (20) which are communicated, the first cavity (10) is positioned in the second cylinder (2), the first cavity (10) is positioned outside the first cylinder (1) and in the second cylinder (2), the second cavity (20) at least comprises a space positioned in the first cylinder (1), and at least part of the heat exchange component (6) is positioned in the first cavity (10);

the gas-liquid distribution assembly (5) comprises a guide pipe (51), the first guide part (3) and the second cylinder (2) are fixedly arranged, the first guide part (3) is provided with a third cavity (30), the guide pipe (51) and the first guide part (3) are fixedly arranged, one end of the guide pipe (51) is communicated with the third cavity (30), the other end of the guide pipe (51) is communicated with the second cavity (20), and the third cavity (30) is communicated with the first cavity (10);

the second flow guide part (4) is fixedly arranged with the second cylinder (2), and the first flow guide part (3) and the second flow guide part (4) are respectively positioned at two opposite sides of the second cylinder (2);

the heat exchange assembly (6) comprises a tube part (631) and a fin part (632), the cross section of the tube part (631) is flat, the tube part (631) comprises a plurality of flow channels extending along the tube part (631), the flow channels are arranged at intervals, and the tube part (631) is spirally wound around the first cylinder (1); one side of the fin part (632) is connected with the pipe part (631), the other side of the fin part is close to the first cylinder (1) and/or the second cylinder, and the fin part (632) is spirally wound around the first cylinder (1).

2. A gas-liquid separator (100) according to claim 1, wherein said tube portion (631) and said fin portion (632) are formed separately, said tube portion (631) and said fin portion (632) are each formed in a band shape, said tube portion (631) and said fin portion (632) are fixedly connected by brazing or gluing, and said fin portion (632) is fixed to at least one of a side of said tube portion (631) adjacent to the first cylinder and a side of the second cylinder.

3. The gas-liquid separator (100) according to claim 1, wherein said tube portion (631) and said fin portion (632) are integrally formed as a heat exchange core (63), said heat exchange core (63) has a cylindrical shape, said heat exchange core (63) is spirally wound around said first cylinder (1), and said heat exchange core (63) is spread out in a band shape.

4. A gas-liquid separator (100) according to claim 2 or 3, wherein said fin portion (632) is located between said tube portion (631) and said second cylinder (2), a side of said fin portion (632) remote from said tube portion (631) being located adjacent to said second cylinder (2), and a side of said tube portion (631) remote from said fin portion (632) being located adjacent to said first cylinder (1).

5. A gas-liquid separator (100) as claimed in claim 2 or 3 wherein said tube portion (631) has a length greater than its width, said tube portion (631) having a width greater than its thickness; the helical winding direction of the fin portion (632) is parallel to the helical winding direction of the tube portion (631), and the projection of the fin portion (632) on the first cylinder (1) falls in the projection of the tube portion (631) on the first cylinder (1).

6. The gas-liquid separator (100) according to claim 1, wherein the heat exchange assembly (6) further comprises a first collecting pipe (61) and a second collecting pipe (62), one end of the pipe portion (631) is inserted into the first collecting pipe (61), the other end of the pipe portion is inserted into the second collecting pipe (62), one end of the first collecting pipe (61) is sealed, the other end of the first collecting pipe is connected with the first flow guiding portion (3), one end of the second collecting pipe (62) is sealed, the other end of the second collecting pipe is connected with the second flow guiding portion (4), and each flow passage inside the pipe portion (631) is communicated with an inner cavity of the first collecting pipe (61) and an inner cavity of the second collecting pipe (62);

follow the axial direction of vapour and liquid separator (100), first pressure manifold (61) with second pressure manifold (62) interval sets up, first pressure manifold (61) with second pressure manifold (62) are located respectively the relative both sides of pipe portion (631).

7. The gas-liquid separator (100) according to claim 6, wherein at least a portion of a sidewall of said first barrel (1) is recessed to form a first recess (11) facing away from said second barrel (2), and at least a portion of said first header (61) is received in said first recess (11);

and/or at least part of the side wall of the first cylinder (1) is recessed to form a second recess (12) facing away from the second cylinder (2), and at least part of the second collecting pipe (62) is accommodated in the second recess (12).

8. The gas-liquid separator (100) according to claim 7, wherein an axial direction of the first header (61), an axial direction of the second header (62), and an axial direction of the gas-liquid separator (100) are arranged in parallel, and projections of the first header (61) and the second header (62) along the axial direction of the gas-liquid separator (100) are overlapped.

9. A gas-liquid separator (100) as claimed in claim 1 wherein the fin portion (632) comprises a plurality of projecting structures arranged along the length of the fin portion (632), the projecting structures being at least one of solid or hollow bar structures, solid or hollow corrugated structures, staggered teeth structures, louvered structures, perforated structures, embossed structures or grooved structures on the surface.

10. A thermal management system, comprising the gas-liquid separator (100) of any of claims 1 to 9, the heat management system also comprises an evaporator (200), a compressor (300), a condenser (400) and a throttling device (500), the gas-liquid distribution assembly (5) is connected between the evaporator (200) and the compressor (300), the heat exchange assembly (6) is connected between the condenser (400) and the throttling device (500), the outlet of the evaporator (200) is connected with the first diversion part (3) of the gas-liquid separator (100), the inlet of the compressor (300) is connected with the second diversion part (4) of the gas-liquid separator (100), the outlet of the condenser (400) is connected with the second diversion part (4), the inlet of the throttling device (500) is connected with the first flow guide part (3).