CN112460864B

CN112460864B - Gas-liquid separator and thermal management system

Info

Publication number: CN112460864B
Application number: CN202010066898.8A
Authority: CN
Inventors: 董海锋; 李理; 董军启; 王美; 许悦
Original assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2022-08-12
Anticipated expiration: 2040-01-20
Also published as: CN112460864A; CN115371309A

Abstract

The application discloses a gas-liquid separator and a thermal management system, on a first plane, the center of the projected outer contour of a second cylinder of the gas-liquid separator is marked as A, the midpoint of the connecting line of the center of the projected outer contour of a first collecting pipe and the center of the projected outer contour of a second collecting pipe is marked as B, the connecting line from the point A to the point B and the extension line thereof form a ray LI, the projected outer contour of the first collecting pipe has a tangent point C, the tangent line from the point A to the point C and the extension line thereof form a ray L2, an included angle R1 is formed between the L1 and the L2, the diameter of the projected outer contour of the first collecting pipe is larger than or equal to the diameter of the projected outer contour of the second collecting pipe, and the value range of the included angle R1 is more than or equal to 5 degrees and less than or equal to 120 degrees. Under the unchangeable condition of second barrel diameter in this application, in this value range, can balance heat exchange assembly's heat transfer performance and the volume of first barrel better, make heat exchange assembly's heat transfer performance and the refrigerant storage capacity in the first barrel comparatively balanced.

Description

Gas-liquid separator and thermal management system

Technical Field

The application relates to the technical field of heat exchange, in particular to a gas-liquid separator.

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 is 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, vapour and liquid separator includes interior barrel, outer barrel and is located the intermediate layer chamber between barrel and the outer barrel, and the inboard of barrel is located to the gas-liquid distribution subassembly, and heat exchange assemblies is located the intermediate layer intracavity, and the refrigerant that gets into in the intermediate layer chamber carries out the heat exchange with heat exchange assemblies, can reduce the refrigerant temperature that flows into the expansion valve under the refrigeration mode, improves refrigeration effect to can further reduce compressor liquid hammer. Under the unchangeable circumstances of outer barrel diameter, the pressure manifold diameter of heat exchange assembly then can lead to the volume of interior barrel little, and the refrigerant volume that interior barrel stored is little, and the diameter of heat exchange assembly's pressure manifold is little, and the volume of interior barrel is big, and then the refrigerant volume that interior barrel stored is many, but heat exchange assembly's heat transfer performance can worsen, how to guarantee to find the equilibrium between the refrigerant storage capacity of interior barrel and heat exchange assembly's the heat transfer performance, is the technological problem that the urgent need be solved.

Disclosure of Invention

In view of the above problems in the related art, the present application provides a gas-liquid separator with balanced heat exchange performance and refrigerant storage capacity.

In order to achieve the purpose, the following technical scheme is adopted in the application: a gas-liquid separator comprising: the heat exchange device comprises a first cylinder, a second cylinder 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, the first cavity is positioned in the second cylinder, and the first cavity is positioned outside the first cylinder; the heat exchange assembly is at least partially positioned in the first cavity and comprises a first collecting pipe and a second collecting pipe, the first collecting pipe and the second collecting pipe both extend along a direction parallel to the axis of the first cylinder, and the first collecting pipe and the second collecting pipe are both positioned between the first cylinder and the second cylinder; the second cylinder, the first collecting pipe and the second collecting pipe have projections on a first plane, the first plane is perpendicular to the axis of the first cylinder, and the shapes of the outer contours of the projections of the first collecting pipe, the second collecting pipe and the second cylinder on the first plane are all circular; on a first plane, the center of the projected outer contour of the second cylinder is marked as A, the midpoint of a connecting line between the center of the projected outer contour of the first collecting pipe and the center of the projected outer contour of the second collecting pipe is marked as B, the connecting line from the point A to the point B and an extension line thereof form a ray LI, the projected outer contour of the first collecting pipe has a tangent point marked as C, the point C is located on one side of the first collecting pipe, which is far away from the ray LI, the tangent line from the point A to the point C and the extension line thereof form a ray L2, an included angle R1 is formed between the L1 and the L2, the diameter of the projected outer contour of the first collecting pipe is larger than or equal to the diameter of the projected outer contour of the second collecting pipe, and the value range of the included angle R1 is not less than 5 degrees and not more than R1 and not more than 120 degrees.

The external diameter of first pressure manifold is greater than or equal to the external diameter of second pressure manifold in this application, and the value range of contained angle R1 is for 5R 1 that is less than or equal to 120 that is less than or equal to, under the unchangeable condition of second barrel diameter, in this value range, can balance heat exchange assembly's heat transfer performance and the volume of first barrel betterly, makes heat exchange assembly's heat transfer performance and the refrigerant storage capacity in the first barrel comparatively balanced.

Optionally, an outer contour of the projection of the second collecting pipe has a tangent point marked as D, the point D is located on a side of the second collecting pipe away from the ray LI, a tangent line from the point a to the point D and an extension line thereof form a ray L3, an included angle R2 is formed between L1 and L3, and a value range of the included angle R2 is 5 degrees to R2 degrees to 120 degrees.

Optionally, on the first plane, the diameter of the outer contour of the projection of the first collecting pipe is D1, and D1 is not less than 8mm and not more than 16 mm; the diameter of the outer contour of the projection of the second collecting pipe is D2, and D2 is more than or equal to 8mm and less than or equal to 16 mm; the diameter of the outer contour of the projection of the second cylinder is D3, and D3 is more than or equal to 50mm and less than or equal to 100 mm; the first collecting pipe and the second collecting pipe are arranged in parallel and in a tangent mode, the value range of the included angle R1 is more than or equal to 10 degrees and less than or equal to R1 and less than or equal to 60 degrees, and the value range of the included angle R2 is more than or equal to 10 degrees and less than or equal to R2 and less than or equal to 60 degrees.

Optionally, the outer surface of the first collecting pipe is tangent to the inner surface of the second cylinder, the outer surface of the second collecting pipe is tangent to the inner surface of the second cylinder, the outer surface of the first collecting pipe is tangent to the outer surface of the second collecting pipe, the value range of the included angle R1 is not less than 10 degrees and not more than 56 degrees, and the value range of the included angle R2 is not less than 10 degrees and not more than 56 degrees, R2.

Optionally, the gas-liquid separator further comprises a sleeve with a circular cross section, the sleeve is located inside the first cylinder, on the first plane, the center of the projection of the sleeve coincides with the center of the projection of the second cylinder, the diameter of the outer contour of the projection of the sleeve is D4, 16mm or more and D4 or more and 25mm or less, and 0.15 or more and D4/D3 or less and 0.5 or less; the outer surface of the first collecting pipe is approximately tangent to the outer surface of the sleeve, the outer surface of the second collecting pipe is approximately tangent to the outer surface of the sleeve, the outer surface of the first collecting pipe is approximately tangent to the outer surface of the second collecting pipe, the included angle R1 is larger than or equal to 28 degrees and smaller than or equal to R1 and smaller than or equal to 60 degrees, and the included angle R2 is larger than or equal to 28 degrees and smaller than or equal to R2 and smaller than or equal to 60 degrees.

Optionally, at least part of the side wall surface of the first cylinder is recessed inward to form a first recess, the first collecting pipe and the second collecting pipe are both arranged corresponding to the first recess, and at least part of the first collecting pipe and the second collecting pipe is accommodated in the first recess.

Optionally, on the first plane, the diameter of the outer contour of the projection of the first collecting pipe is D1, and D1 is not less than 8mm and not more than 16 mm; the diameter of the outer contour of the projection of the second collecting pipe is D2, and D2 is more than or equal to 8mm and less than or equal to 16 mm; the diameter of the outer contour of the projection of the second cylinder is D3, and D3 is more than or equal to 50mm and less than or equal to 100 mm; the first collecting pipe and the second collecting pipe are arranged in parallel along the direction parallel to the axis of the first cylinder, the center of the projection of the first collecting pipe is overlapped with the center of the projection of the second collecting pipe on a first plane, the value range of the included angle R1 is more than or equal to 5 degrees and less than or equal to R1 and less than or equal to 30 degrees, and the value range of the included angle R2 is more than or equal to 5 degrees and less than or equal to R2 and less than or equal to 30 degrees.

Optionally, the diameter of the outer contour of the projection of the first collecting pipe is D1, and D1 is not less than 8mm and not more than 16 mm; the diameter of the outer contour of the projection of the second collecting pipe is D2, and D2 is more than or equal to 8mm and less than or equal to 16 mm; the diameter of the outer contour of the projection of the second cylinder is D3, and D3 is more than or equal to 50mm and less than or equal to 100 mm; on the first plane, the center of the projection of the first collecting pipe and the center of the projection of the second collecting pipe are not coincident, the value range of the included angle R1 is more than 5 degrees and less than or equal to R1 and less than or equal to 120 degrees, and the value range of the included angle R2 is more than 5 degrees and less than or equal to R1 and less than or equal to 120 degrees.

Optionally, the gas-liquid separator further includes a first diversion portion, a second diversion portion, and a gas-liquid distribution assembly, the gas-liquid separator has a second cavity communicated with the first cavity, and the second cavity at least includes a space located in the first cylinder; the heat exchange assembly further comprises a heat exchange tube and a heat exchange piece, the heat exchange piece is connected with the heat exchange tube, the heat exchange tube and the heat exchange piece are arranged around part of the first cylinder, one end of the heat exchange tube is connected with the first collecting pipe, the other end of the heat exchange tube is connected with the second collecting pipe, and an inner cavity of the heat exchange tube is communicated with an inner cavity of the first collecting pipe and an inner cavity of the second collecting pipe; the first flow guide part is fixedly arranged with the second cylinder body, the first flow guide part is provided with a third cavity, and the third cavity is communicated with the first cavity; the second flow guide part is fixedly arranged with the second cylinder, the first flow guide part and the second flow guide part are positioned at two opposite sides of the second cylinder, and the second flow guide part is communicated with the first cavity and the outside of the gas-liquid separator; the gas-liquid distribution assembly comprises a flow guide pipe, a connecting pipe and a sleeve pipe, at least part of the flow guide pipe is located in the second cavity, the flow guide pipe is fixedly arranged with the first flow guide part, at least part of the connecting pipe is located in the third cavity, the connecting pipe is fixedly arranged with the first flow guide part, the sleeve pipe is sleeved outside the flow guide pipe, the sleeve pipe is fixedly arranged with the flow guide pipe, 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, one end of the connecting pipe is communicated with the second cavity, the other end of the connecting pipe is communicated with the outside of the gas-liquid separator, and one end, close to the first flow guide part, of the sleeve pipe is communicated with the second cavity. In view of the above-mentioned problems with the related art, the present application provides a thermal management system comprising the above-mentioned heat exchange assembly.

In order to achieve the purpose, the following technical scheme is adopted in the application: the utility model provides a heat management system, includes 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 exchange assembly connect in between condenser and the throttling arrangement.

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 perspective view of an embodiment of a gas-liquid separator of the present application, wherein the second barrel is not shown;

FIG. 3 is a schematic exploded perspective view of an embodiment of a gas-liquid separator of the present application;

FIG. 4 is a schematic view of an assembly structure of the first guide portion, the second guide portion, the gas-liquid distribution assembly, the first support member and the second support member shown in FIG. 3;

FIG. 5 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. 6 is a schematic cross-sectional perspective view of an embodiment of a gas-liquid separator of the present application, wherein the direction of the arrows indicates the direction of flow of the second fluid;

FIG. 7 is a schematic cross-sectional view of an embodiment of a gas-liquid separator of the present application, wherein the direction of the arrows indicates the direction of flow of the first fluid;

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

FIG. 9 is a schematic perspective view of a second deflector according to an embodiment of the present disclosure;

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

FIG. 11 is a schematic view of an embodiment of a gas-liquid separator of the present application projected onto a first plane;

fig. 12 is a simplified schematic diagram of an embodiment of a projection of the outer contour of the second cylinder, the outer contour of the first header, the outer contour of the second header, and the outer contour of the sleeve on the first plane, where the outer surface of the first header is tangent to the outer surface of the second header, the outer surfaces of the first header and the second header are tangent to the inner surface of the second cylinder, and the outer contour of the first cylinder is not shown;

fig. 13 is a simplified schematic diagram of an embodiment of a projection of the outer contour of the second cylinder, the outer contour of the first header, the outer contour of the second header, and the outer contour of the sleeve on the first plane, where the outer surface of the first header is tangent to the outer surface of the second header, the outer surfaces of the first header and the second header are both approximately tangent to the outer surface of the sleeve, and the outer contour of the first cylinder is not shown;

fig. 14 is a simplified schematic diagram of an embodiment of a projection of the outer contour of the second cylinder, the outer contour of the first header, the outer contour of the second header, and the outer contour of the sleeve on the first plane, where a center of the projection of the first header and a center of the projection of the second header coincide, and the outer contour of the first cylinder is not shown;

fig. 15 is a simplified schematic diagram of an embodiment of a projection of the outer contour of the second cylinder, the outer contour of the first header, the outer contour of the second header, and the outer contour of the sleeve on the first plane, where both the outer surface of the first header and the outer surface of the second header are substantially tangent to the outer surface of the sleeve, the first header and the second header are symmetrically arranged with respect to a diameter of the second cylinder, and the outer contour of the first cylinder is not shown;

fig. 16 is a schematic connection diagram of an embodiment of the thermal management system of the present application, wherein the direction indicated by the arrow is the refrigerant flow 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 side wall; 111. a first side surface; 112. a second side surface;

2. a second cylinder;

3. a first flow guide part; 31. a first member; 311. a first end face; 312. a second end face; 313. a first step surface; 314. a first sidewall surface; 315. a second sidewall surface; 32. a second component; 321. a third end face; 322. a fourth end face; 323. a second step surface; 324. a third sidewall surface; 325. a fourth side wall surface; 33. a first through hole; 331. a first extension portion; 34. a second through hole; 341. a second extension portion; 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 pipe; 64. a heat exchange member; 641. a first heat exchange member; 642. a second heat exchange member;

71. a first support member; 72. a second support member; 721. filtering with a screen; 722. a support; 73. a first connecting member;

8. an insulating assembly; 9. a flow guide member.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations 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. 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.

According to an embodiment of the gas-liquid separator 100 of the present application, as shown in fig. 1 to 9, the gas-liquid separator 100 includes a first cylinder 1, a second cylinder 2, and a heat exchange assembly 6, the first cylinder 1 is located inside the second cylinder 2, the gas-liquid separator 100 has a first cavity 10 and a second cavity 20 which are communicated with each other, the first cavity 10 is located inside the second cylinder 2, the first cavity 10 is located outside the first cylinder 1, and the second cavity 20 at least includes a space located inside the first cylinder 1. In this embodiment, the heat exchange assembly 6 is at least partially located within the first chamber 10. In other embodiments, the heat exchange assembly 6 may also be located outside the second cylinder 2.

In this embodiment, the first cylinder 1 and the second cylinder 2 are both hollow cylinders with a substantially circular cross section, and the outer diameter of the first cylinder 1 is smaller than the inner diameter of the second cylinder 2. A second cavity 20 is formed in the first cylinder 1, and a gas-liquid distribution assembly 5 is arranged in the second cavity 20. The first cavity 10 is a cavity surrounded by the outer wall surface of the first cylinder 1 and the inner wall surface of the second cylinder 2.

The gas-liquid separator 100 further includes a first flow guiding portion 3 and a second flow guiding portion 4, the first flow guiding portion 3 and the second flow guiding portion 4 are respectively fixed to the second cylinder 2, one end face of the second cylinder 2 abuts against the first flow guiding portion 3, the other end face abuts against the second flow guiding portion 4, one end face of the first cylinder 1 abuts against the first flow guiding portion 3, and the other end is spaced from the first flow guiding portion 3. 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 has 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 externally communicated with the second cavity 20, the third cavity 30 and the gas-liquid separator 100, and the third cavity 30 is communicated with the first cavity 10.

In the present embodiment, 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 into a projection of the second member 32 in the 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 first member 31 includes a first end surface 311 distant from the first cylinder 1, a second end surface 312 opposite to the first end surface 311, and a first step surface 313, and the first step surface 313 divides the side wall surface of the first member 31 into two sections, i.e., a first side wall 11 surface 314 and a second side wall surface 315. The first step surface 313 is connected to the first sidewall 11 surface 314 by an extension and to the second sidewall surface 315 by an extension. The upper end surface of the first cylinder 1 abuts against the first step surface 313. In some embodiments, a portion of the inner wall surface of the first cylinder 1 is disposed in close contact with the second sidewall surface 315. The first through hole 33 and the second through hole 34 are each opened at the first end surface 311 and the second end surface 312.

The second member 32 includes a third end surface 321 distant from the second cylinder 2, a fourth end surface 322 opposite to the third end surface 321, and a second step surface 323, and the second step surface 323 divides the side wall surface of the second member 32 into two sections, i.e., a third side wall surface 324 and a fourth side wall surface 325. The second step 323 is extended to connect the third sidewall 324 and is extended to connect the fourth sidewall 325. The upper end surface of the second cylinder 2 abuts against the second step surface 323. In some embodiments, a portion of the inner wall surface of the second cylinder 2 is disposed in close contact with the fourth sidewall surface 325. The third through hole 35 is formed with openings at both the third end face 321 and the fourth 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 73 with a first channel, a second connecting piece with a second channel, a fastener for connecting the first connecting piece 73 and the second connecting piece, and a sealing piece arranged between the first connecting piece 73 and the second connecting piece, when the first connecting piece 73 is connected with the second connecting piece through the fastener, the first channel is communicated with the second channel, the sealing piece is compressed, and the joint of the first channel and the second channel is arranged in a sealing mode through the sealing piece. One of the first connecting member 73 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 73 and the second connector are fixedly connected through 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 is understood that in the present application, the pipe connecting assembly is connected to the second component 32, which means that either the first connecting member 73 or the second connecting member is integrally formed with the second component 32 (refer to fig. 2), or the pipe connecting assembly and the second component 32 are separately formed and then connected together.

In some embodiments, referring to fig. 6 to 8, an edge portion of the opening of the first through hole 33 located at the second end surface 312 extends toward the second chamber 20 to form a first extension 331, and an inner sidewall of the first extension 331 is connected to a portion of an outer sidewall of the draft tube 51, so as to increase the reliability of the connection between the draft tube 51 and the first member 31. The edge portion of the second through hole 34 located at the opening of the first end surface 311 extends toward the third cavity 30 to form a second extension portion 341, and the inner side wall of the second extension portion 341 is connected with a portion of the outer side wall of the connection pipe 52, so as to increase the reliability of the connection between the connection pipe 52 and the first component 31.

In this embodiment, the second flow guiding portion 4 includes a third component 41 and a fourth component 42 that are disposed at an interval, the third component 41 covers an end of the second cylinder 2 away from the first flow guiding portion 3, and the fourth component 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 fourth member 42 falls entirely within the projection of the first cylinder 1. At least part of the outer wall surface of the third member 41 is hermetically connected to part of the inner wall surface of the second cylinder 2, and at least part of the outer wall surface of the fourth member 42 is hermetically connected to part of the inner wall surface of the first cylinder 1. 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, a projection of the third member 41 falling entirely in a projection of the second cylinder 2 in the axial direction of the gas-liquid separator 100; the fourth member 42 may be similar in structure to the first member 31, and the fourth member 42 has a stepped surface against which the first cylinder 1 abuts, and a projection of the fourth member 42 falls completely into a projection of the first cylinder 1 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, an opening formed on a side of the fourth through hole 43 close to the first cavity 10 is larger than an opening formed on a side far from the first cavity 10, and specifically, the fourth through hole 43 is divided into two sections, the section far from the first cavity 10 is a first section in a substantially straight cylinder shape, the section close to the first cavity 10 is a second section in a substantially horn shape, a cross section of one end of the second section has a profile size same as that of the first section, and a cross section of the other end of the second section has a profile size larger than that of the first section.

The gas-liquid separator 100 is provided with a first support 71 abutting between the third member 41 and the fourth member 42, and in this embodiment, as shown in fig. 3, 4, 6, and 7, the first support 71 is a substantially straight cylindrical body, and the third member 41 and the fourth member 42 are respectively provided with grooves for accommodating end portions of the first support 71, so as to increase the stability of the first support 71 supporting the third member 41 and the fourth member 42. In other embodiments, the first support 71 may be at least one protrusion formed by extending the third component 41 or the fourth component 42, and the protrusion is located between the third component 41 and the fourth component 42 to support the third component 41 and the fourth component 42.

In some other embodiments, the second guiding portion 4 may only include the third component 41 covering the second cylinder 2, and the first cylinder 1 includes a cylinder and a bottom cover integrally formed with the cylinder, and a side wall of the cylinder is the first side wall 11. The first support 71 abuts between the third member 41 and the bottom cover. The matching relationship among the bottom cover, the first support 71 and the third member 41 is similar to the matching relationship among the third member 41, the fourth member 42 and the first support 71, and will not be described herein again.

The third member 41 is connected to the pipe connection assembly. When the first connector 73 and the second connector are fixedly connected by a fastener, the first cavity 10 is communicated with the outside of the gas-liquid separator 100, and the gas-liquid separator 100 is connected into the thermal management system.

In this embodiment, when mounting, the end surface of one end of the first tube 1 abuts against the first step surface 313, the inner wall surface of the first tube 1 is welded to the second side wall surface 315, and the inner wall surface of the other end of the first tube 1 is welded to the outer side wall surface of the fourth member 42, thereby sealing the first tube 1; an end surface of one end of the second cylindrical body 2 abuts against the second step surface 323, the inner wall surface of the second cylindrical body 2 is welded to the fourth side wall surface 325, and the inner wall surface of the other end of the second cylindrical body 2 is welded to the outer wall surface of the third member 41, thereby sealing the second cylindrical body 2.

In the present embodiment, the gas-liquid distribution assembly 5 includes a flow guide tube 51, a connecting tube 52, a sleeve 53, and a first plate 54, wherein the sleeve 53 is disposed outside the flow guide tube 51, the first plate 54 has a through hole, one end of the flow guide tube 51 passes through the through hole to allow the first plate 54 to be disposed on the upper portion of the flow guide tube 51, and the first plate 54 is disposed above the sleeve 53.

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 second end surface 312 of the first member 31, so that the first fluid can flow from the connection pipe 52 into the second chamber 20. There is a gap 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 downwards 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 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 sleeve 53 remote from the first plate 54 is sealed so that the lumen of the sleeve 53 is isolated from the second chamber 20 at the end remote from the first plate 54. A gap is left between the lower end surface 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 at the other end is open and communicates with the passage 40, i.e., the open end 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 inner side wall of the end of the sleeve 53 close to the fourth member 42 is provided with a limiting structure (refer to fig. 6), and the end of the flow guide pipe 51 extends into the limiting structure, so that the sleeve 53 and the flow guide pipe 51 can be fixed and can be used for limiting the displacement of the flow guide pipe, but the design of the limiting structure does not influence the flow of the first fluid.

In some embodiments, the sleeve 53 may be fixed only by the limiting structure, and the sleeve 53 may be connected to the first plate 54 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 gas-liquid separator 100 is further provided with a filter assembly 72, and the filter assembly 72 is fixed to an end of the sleeve 53 adjacent to the fourth member 42. The filter assembly 72 includes a filter screen 721 and a support 722, and the support 722 is abutted between the sleeve 53 and the fourth member 42 for fixing the filter screen 721 and limiting the sleeve, thereby reducing the shaking of the gas-liquid distribution assembly 5. The fourth component 42 may further have a boss or a groove matching with the bracket 722, and one end of the bracket 722 is sleeved outside the boss or inserted into the groove. The end of the sleeve 53 near the fourth member 42 may be provided with an oil return hole (not shown) having a hole diameter matched according to the capacity of the thermal management system, so that the ratio of the refrigerant oil returning to the compressor to the first fluid is better, and the filter 721 prevents impurities from entering the compressor through the oil return hole.

In some other embodiments, the sleeve 53 may be sealingly fixed to the fourth member 42 or the bracket 722 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 second end face 312. The first cylinder 1 is provided with a connecting pipe 52 connected to the first member 31 and communicated with the second through hole 34, and 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, and the gas refrigerant floats upwards and flows into the U-shaped flow 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 (open 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. After entering the second chamber 20, the liquid first fluid sinks due to gravity, so that the liquid first fluid is stored in the first cylinder 1, while the gaseous first fluid floats upwards and enters the channel 40 from the upper end of the sleeve 53 under the suction action of the compressor, so that the liquid first fluid remains at the bottom of the first cylinder 1, and the gaseous first fluid flows through the third chamber 30 and the first chamber 10, and then flows out of the gas-liquid separator 100 from the second flow guide part 4, so as to realize gas-liquid separation of the first fluid.

The gas-liquid separator 100 includes a heat exchange assembly 6 at least partially disposed in the first chamber 10, wherein the heat exchange assembly 6 includes a first collecting pipe 61, a second collecting pipe 62, a heat exchange pipe 63, and a heat exchange member 64. 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 this embodiment, one end of the first collecting pipe 61 is connected to the second member 32, one end of the second collecting pipe 62 is connected to the third member 41, the first collecting pipe 61 and the second collecting pipe 62 are arranged in parallel, 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 towards the direction far away from the second cylinder 2 to form a first concave portion, the first collecting pipe 61 and the second collecting pipe 62 are arranged corresponding to the first concave portion, and at least part of the first collecting pipe 61 and the second collecting pipe 62 are accommodated in the first concave portion. In the axial direction of the gas-liquid separator 100, the first member 31 and the fourth member 42 are provided with relief portions at positions corresponding to the first concave portions, so as 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.

Alternatively, the heat exchange tubes 63 are flat tubes, the number of which includes at least one, and one end of the flat tube is connected to the first header 61 and the other end is connected to the second header 62. Each flat tube includes a plurality of flow channels extending along the flat tube, the plurality of flow channels are arranged at intervals, and each flow channel is communicated with the inner cavity of the first header 61 and the inner cavity of the second header 62.

The heat exchange member 64 is connected with the heat exchange tube 63, and it should be understood that the connection means that the heat exchange member 64 and the heat exchange tube 63 can be integrally formed, or can be connected together by machining after being separately formed. The heat exchange pipe 63 and the heat exchange member 64 are both arranged around at least part of the first cylinder 1.

In some other embodiments, one flat tube is disposed around the first cylinder 1 to form an approximately cylindrical shape; in some embodiments, at least two flattened tubes are juxtaposed in a direction parallel to the axial direction of the gas-liquid separator 100, and the at least two flattened tubes are coiled in the same direction to form an approximately cylindrical shape.

Referring to fig. 6 and 7, the heat exchange member 64 and the heat exchange tube 63 are connected by brazing in this embodiment, the heat exchange member 64 includes a first heat exchange member 641 and a second heat exchange member 642 respectively located at opposite sides of the heat exchange tube 63, and the first heat exchange member 641 and the second heat exchange member 642 are respectively fixedly connected to the heat exchange tube 63. The first heat exchange member 641 is connected to the inner wall surface of the second cylinder 2 and one side wall surface of the heat exchange tube 63, the second heat exchange member 642 is connected to the outer wall surface of the first cylinder 1 and the other side wall surface of the heat exchange tube 63, and the first heat exchange member 641 and the second heat exchange member 642 are connected to the first cylinder 1 and the second cylinder 2 by brazing. The first and second

heat exchange members

641 and 642 are provided in the first chamber 10 to enhance heat exchange between the second fluid inside the heat exchange pipe 63 and the first fluid inside the first chamber 10.

Referring to fig. 2 and 7, in this embodiment, a flow guide 9 is provided between the first header 61 and the second header 62 and the second cylinder 2 to prevent the first fluid from directly flowing out of the first cavity 10 through the gaps between the first header 61 and the second header 62 and the second cylinder 2. The air guiding member 9 may or may not be connected with the first heat exchanging member 641. The present application is not limited to this, and may be set according to a specific application environment.

The flow guiding element 9 at least includes two portions located at the upper end of the first collecting pipe 61 and the lower end of the first collecting pipe 61, and prevents a portion of the first fluid flowing out of the third chamber 30 from directly flowing downward through the gap between the first collecting pipe 61, the second collecting pipe 62 and the second cylinder 2 to flow out of the first chamber 10, that is, the first fluid can flow through the heat exchanging element 64 and the outer side of the heat exchanging pipe 63 as much as possible, thereby being beneficial to improving the heat exchanging efficiency of the gas-liquid separator 100.

Referring to fig. 2, 3, 9 and 11, the flow guiding element 9 includes a first mating surface for fitting to the second cylinder 2, a second mating surface for fitting to the first collecting pipe 61, and a third mating surface for fitting to the second collecting pipe 62. Optionally, the matching mode of the first matching surface and the second cylinder 2 may be a fitting setting, that is, the first matching surface is a curved surface, which can effectively prevent the first fluid from flowing out of the first cavity 10 from the gap between the flow guide member 9 and the inner wall surface of the second cylinder 2. Be equipped with protruding muscle between second fitting surface and the third fitting surface, the wall one side of protruding muscle extends and connects the second fitting surface, the opposite side extends and connects the third fitting surface, protruding muscle locates the clearance between first pressure manifold 61 and the second pressure manifold 62, the first pressure manifold 61 of wall one side laminating of protruding muscle sets up, opposite side laminating second pressure manifold 62 sets up, and the first pressure manifold 61 of second fitting surface laminating sets up, third fitting surface laminating second pressure manifold 62 sets up, can be comparatively effectual prevent that first fluid from first pressure manifold 61, the clearance between second pressure manifold 62 and the water conservancy diversion piece 9 from flowing out first chamber 10.

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

In the present embodiment, the second cylinder 2, the first collecting pipe 61, and the second collecting pipe 62 have a projection on a first plane, and the first plane is perpendicular to the axial direction of the gas-liquid separator 100, as shown in fig. 10, the outer contour shapes of the first collecting pipe 61, the second collecting pipe 62, the sleeve 53, and the second cylinder 2 projected on the first plane are all circular.

On the first plane, the center of the projected outer contour of the second cylinder 2 is marked as a, the midpoint of the connecting line between the center of the projected outer contour of the first header 61 and the center of the projected outer contour of the second header 62 is marked as B, and the connecting line from the point a to the point B and the extension line thereof form a ray LI. The outer contour of the projection of the first collecting pipe 61 is provided with a tangent point marked C, the point C is positioned on one side, far away from the ray LI, of the first collecting pipe 61, the tangent line from the point A to the point C and the extension line thereof form a ray L2, an included angle R1 is formed between L1 and L2, and the value range of the included angle R1 is more than or equal to 5 degrees and less than or equal to R1 and less than or equal to 120 degrees. The outer contour of the projection of the second collecting pipe 62 has a tangent point marked as D, the point D is located on the side of the second collecting pipe 62 far away from the ray LI, the tangent line from the point A to the point D and the extension line thereof form a ray L3, an included angle R2 is formed between L1 and L3, and the value range of the included angle R2 is more than or equal to 5 degrees and less than or equal to R2 and less than or equal to 120 degrees.

On the first plane, the diameter of the outer contour of the projection of the first collecting pipe 61 is D1, and the value range of D1 is that D1 is not more than 8mm and not more than 16 mm; the diameter of the outer contour of the projection of the second collecting pipe 62 is D2, and the value range of D2 is more than or equal to 8mm and less than or equal to D2 and less than or equal to 16 mm; the diameter of the outer contour of the projection of the second cylinder 2 is D3, and the value range of D3 is that D3 is more than or equal to 50mm and less than or equal to 100 mm; the diameter of the projected outer contour of the sleeve 53 is D4, the value range of D4 is 16 mm-25 mm of D4, and is 0.15-0.5 of D4/D3. The values of the included angles R1 and R2 are all related to the values of D1, D2, D3 and D4, that is, when any one of the values of D1, D2, D3 and D4 is changed, the values of the included angles R1 and R2 may be changed accordingly.

Referring to fig. 11, the first collecting pipe 61 and the second collecting pipe 62 are arranged in parallel and tangentially, a small part of the first collecting pipe 61 and the second collecting pipe 62 is accommodated in the first recess, at this time, the heat exchange pipe 63 is not accommodated in the first recess, the extending direction of the end part of the heat exchange pipe 63 connected with the first collecting pipe 61 is perpendicular to L1, and the extending direction of the end part of the heat exchange pipe 63 connected with the second collecting pipe 62 is perpendicular to L1, so that the bending of the end part of the heat exchange pipe 63 can be reduced, the flow resistance of the second fluid flowing into the first collecting pipe 61 from the heat exchange pipe 63 and the heat exchange pipe 63 from the second collecting pipe 62 can be reduced, and the process of assembling the heat exchange pipe 63 with the first collecting pipe 61 and the second collecting pipe 62 can be simplified. On the other hand, since only a small portion of the first header 61 and the second header 62 is accommodated in the first recess, the volume of the first cylinder 1 can be increased and the gas-liquid separator effect of the gas-liquid separator 100 can be improved, compared to a structure in which the first header 61 and the second header 62 are completely accommodated in the first recess.

As shown in fig. 12, it is a simple schematic diagram of the projection of the outer contour of the second cylinder 2, the outer contour of the first collecting pipe 61, the outer contour of the second collecting pipe 62, and the outer contour of the sleeve 53 on the first plane, and the thickness of the second cylinder 2 in the drawing is infinitely close to zero. The outer surface of the first collecting pipe 61 is arranged to be tangent to the inner surface of the second cylinder 2, the outer surface of the second collecting pipe 62 is arranged to be tangent to the inner surface of the second cylinder 2, the outer surface of the first collecting pipe 61 is arranged to be tangent to the outer surface of the second collecting pipe 62, and the points a, B, C, D, the ray L1, the ray L2 and the ray L3 are shown in the figure. D1 is equal to D2, and L1 is perpendicular to the connecting line of the center of the projected outer contour of the first collecting pipe 61 and the center of the projected outer contour of the second collecting pipe 62, so that R1 is equal to R2, the included angle R1 is greater than or equal to 10 degrees and less than or equal to R1 and less than or equal to 56 degrees, and the included angle R2 is greater than or equal to 10 degrees and less than or equal to R2 and less than or equal to 56 degrees. Fig. 13 is a simplified schematic diagram of the projection of the outer contour of the second cylinder 2, the outer contour of the first collecting pipe 61, the outer contour of the second collecting pipe 62, and the outer contour of the sleeve 53 on the first plane, in which the thicknesses of the first cylinder 1 and the second cylinder 2 are infinitely close to zero, and the contour line of the first cylinder 1 is not shown. The outer surface of the first collecting pipe 61 is approximately tangent to the outer surface of the sleeve 53, the outer surface of the second collecting pipe 62 is approximately tangent to the outer surface of the sleeve 53, the outer surface of the first collecting pipe 61 is tangent to the outer surface of the second collecting pipe 62, a point A, a point B, a point C, a point D, a ray L1, a ray L2 and a ray L3 are shown in the figure, the value range of an included angle R1 is more than or equal to 28 degrees and less than or equal to 60 degrees, and the value range of an included angle R2 is more than or equal to 28 degrees and less than or equal to 60 degrees and less than or equal to R2 degrees.

It should be understood that the first header 61 and the second header 62 are located between the first barrel 1 and the second barrel 2, and the sleeve 53 is located inside the first barrel 1, so that the first sidewall 11 of the first barrel 1 is located between the first header 61 and the second header 62 and the sleeve 53, and the outer surface of the first header 61 and the outer surface of the second header 62 are not directly tangent to the outer surface of the sleeve 53, which is approximately tangent to the outer surface of the sleeve 53, which means that when the wall thickness of the first barrel 1 is infinitely close to zero, the outer surface of the first header 61 and the outer surface of the second header 62 are infinitely close to the outer surface of the sleeve 53, and are approximately tangent to each other.

With reference to fig. 12 and 13, when the outer diameter of the first header 61 and the outer diameter of the second header 62 are kept constant, and the outer surface of the first header 61 and the outer surface of the second header 62 are arranged tangentially, the included angles R1 and R2 become larger gradually as the first header 61 and the second header 62 approach the sleeve 53 gradually along the radial direction of the second cylinder 2, that is, the first header 61 and the second header 62 gradually change from being tangential to the inner surface of the second cylinder 2 to being approximately tangential to the outer surface of the sleeve 53. Because the first collecting pipe 61 and the second collecting pipe 62 are arranged corresponding to the first concave portion, the first collecting pipe 61 and the second collecting pipe 62 are at least partially accommodated in the first concave portion, when the included angles R1 and R2 become larger gradually, the depth of the first concave portion also becomes larger gradually, and at this time, the volume of the first cylinder 1 also decreases gradually.

Fig. 14 is a simplified schematic diagram of the projection of the outer contour of the second cylinder 2, the outer contour of the first collecting pipe 61, the outer contour of the second collecting pipe 62, and the outer contour of the sleeve 53 on the first plane, in which the thicknesses of the first cylinder 1 and the second cylinder 2 are infinitely close to zero, and the contour line of the first cylinder 1 is not shown. Along the direction parallel to the axis of the first cylinder 1, the first collecting pipe 61 and the second collecting pipe 62 are arranged in parallel, on the first plane, the center of the projection of the first collecting pipe 61 coincides with the center of the projection of the second collecting pipe 62, the outer surfaces of the first collecting pipe 61 and the second collecting pipe 62 are both arranged in a tangent mode with the inner surface of the second cylinder 2, the point A, the point B, the point C, the point D, the ray L1, the ray L2 and the ray L3 are shown in the figure, the value range of the included angle R1 is greater than or equal to 5 degrees and less than or equal to R1 and less than or equal to 28 degrees, and the value range of the included angle R2 is greater than or equal to 5 degrees and less than or equal to R2 and less than or equal to 28 degrees. When the outer surfaces of the first collecting pipe 61 and the second collecting pipe 62 are both approximately tangent to the outer surface of the sleeve 53, the included angle R1 is greater than or equal to 14 degrees and less than or equal to R1 and less than or equal to 30 degrees, and the included angle R2 is greater than or equal to 14 degrees and less than or equal to R2 and less than or equal to 30 degrees.

Fig. 15 is a simplified schematic diagram of the projection of the outer contour of the second cylinder 2, the outer contour of the first collecting pipe 61, the outer contour of the second collecting pipe 62, and the outer contour of the sleeve 53 on the first plane, in which the thicknesses of the first cylinder 1 and the second cylinder 2 are infinitely close to zero, and the contour line of the first cylinder 1 is not shown. The first collecting pipe 61 and the second collecting pipe 62 are arranged along the circumferential direction of the first cylinder 1, the center of the projection of the first collecting pipe 61 and the center of the projection of the second collecting pipe 62 are not overlapped on the first plane, the value range of the included angle R1 is more than 5 degrees and less than or equal to R1 and less than or equal to 120 degrees, and the value range of the included angle R2 is more than 5 degrees and less than or equal to R1 and less than or equal to 120 degrees. It should be understood that when the projection of the first header 61 and the projection of the second header 62 are symmetrically distributed on the first plane with respect to one diameter of the sleeve, the point a and the point B coincide, and since the first header 61 and the second header 62 are symmetrically distributed, the L1 is a ray passing through the point a and perpendicular to a line connecting the center of the outer contour of the projection of the first header 61 and the center of the outer contour of the projection of the second header 62.

The gas-liquid separator 100 further comprises a heat insulation assembly 8, and the heat insulation assembly 8 is fixedly arranged with the first cylinder 1. The first cylinder 1 comprises a first side wall 11, the first side wall 11 comprises a first side surface 111 close to the second cavity 20 and a second side surface 112 close to the first cavity 10, the heat insulation assembly 8 is fixedly connected with at least one of the first side surface 111 and the second side surface 112, and at least part of the first side surface 111 and/or the second side surface 112 is attached to the heat insulation assembly 8. Optionally, the heat insulation assembly 8 may be a heat insulation coating sprayed on the first side wall 11 of the first cylinder 1, and the heat insulation assembly 8 may also be a heat insulation member fixed on the first side wall 11, and the heat insulation coating and the heat insulation member are made of materials that do not pollute the first fluid and do not affect the cleanliness of the first fluid.

It is understood that, taking the heat insulation assembly 8 as an example of a heat insulation coating, the heat insulation coating may be sprayed on only the first side surface 111, only the second side surface 112, or both the first side surface 111 and the second side surface 112 may be sprayed with a heat insulation coating, as long as heat exchange between the liquid first fluid in the first cylinder 1 and the heat exchange assembly 6 or the first fluid outside the first cylinder 1 can be reduced, which is not limited in the present application.

As shown in fig. 3, the first cylinder 1 comprises a first portion and a second portion, the first portion is adjacent to the first guide portion 3, the second portion is adjacent to the second guide portion 4, and at least the second portion is provided with an insulation assembly 8 for reducing heat exchange between the first fluid in the liquid state in the first chamber 10 and the first fluid and the heat exchange assembly 6 in the second chamber 20. The height of the second portion is at least half of the height of the first cylinder 1 in the axial direction of the gas-liquid separator 100. The inventors have conducted extensive experiments and found that when the height of the second portion in the axial direction of the gas-liquid separator 100 is at least half of the axial height of the first cylinder 1, the heat exchange of the first fluid in the liquid state in the second chamber 20 can be reduced more effectively. In some embodiments, the height of the second portion along the axial direction of the gas-liquid separator 100 may be the same as the axial height of the first cylinder 1, so that the heat exchange of the liquid first fluid in the first cylinder 1 can be completely prevented, and the heat exchange performance of the thermal management system can be ensured.

The thermal insulation assembly 8 is disposed to completely cover the second portion, and in the case of the thermal insulation assembly 8 being a thermal insulation coating, the thermal insulation coating is sprayed on the first side surface 111 and/or the second side surface 112 corresponding to the second portion (referring to fig. 3, the shaded area is the area where the thermal insulation coating is sprayed on the second side surface 112). The thermal barrier coating may be applied to the first side 111 and/or the second side 112, or only the first side 111 and/or the second side 112 corresponding to the second portion may be sprayed.

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 liquid in the gas state flows into the first cavity 10 through the gas-liquid distribution assembly 5 to exchange heat with the heat exchange assembly, 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 present application, if the stored liquid first fluid exchanges heat with the gaseous first fluid in the heat exchange assembly 6 or the first cavity 10, the stored liquid first fluid may be heated to a gaseous state and enter a heat exchange cycle of the thermal management system, which may affect the heat exchange performance of the thermal management system, so that the heat insulation assembly 8 is disposed on the first side wall 11 of the first cylinder 1, thereby reducing the heat exchange between the liquid first fluid in the first cylinder 1 and the gaseous first fluid in the heat exchange assembly 6 or the first cavity 10, and ensuring the normal operation of the thermal management system, thereby ensuring the heat exchange performance of the thermal management system.

According to another embodiment of the gas-liquid separator 100 of the present application, as shown in fig. 10, this embodiment is different from the above-described embodiments in that the first part and the second part of the first cylinder 1 are separately formed and then assembled and coupled together. The axial height of the cylinder corresponding to the second part is at least half of the axial height of the first cylinder 1. The barrel part corresponding to the second part is made of a material with poorer heat-conducting property compared with metal, such as plastic or ceramic. The percentage of the gaseous refrigerant in the first cavity 10 corresponding to the cylinder corresponding to the first portion is large, the influence of the heated refrigerant on the thermal management system is small, and the cylinder corresponding to the first portion can be made of metal or made of the same material as the cylinder corresponding to the second portion. The main purpose of which is to reduce the heat exchange between the heat exchange assembly 6 and the first fluid in the first chamber 10 and the liquid first fluid in the first cylinder 1, thereby ensuring the heat exchange performance of the thermal management system. The parts of this embodiment that are the same as the above embodiments will not be described again.

According to yet another embodiment of the gas-liquid separator 100 of the present application, this embodiment differs from the above-described embodiments in that the location of the thermal insulation assembly 8 is different. The heat exchanging element 64 includes a first heat exchanging element 641 and a second heat exchanging element 642 respectively disposed at two opposite sides of the heat exchanging pipe 63, at least a portion of the second heat exchanging element 642 is attached to the first cylinder 1, and a contact surface is formed at a portion where the second heat exchanging element 642 is attached to the first cylinder 1, and a shape of the contact surface is related to a structure of the second heat exchanging element 642. The thermal insulation assembly 8 is disposed on the first side 111 and/or the second side 112 in an area corresponding to the contact surface. The main purpose of which is to reduce the heat exchange between the heat exchange assembly 6 and the liquid first fluid in the first cylinder 1, thereby ensuring the heat exchange performance of the thermal management system. In some other embodiments, the heat insulation assembly 8 may be only disposed on the side wall of the second portion corresponding to the contact surface, and the main purpose of the heat exchange assembly 6 is to reduce the heat exchange with the liquid first fluid in the first cylinder 1. The parts of this embodiment that are the same as the above embodiments are not described herein again.

Fig. 16 is a schematic connection diagram of a thermal management system according to an exemplary embodiment of the present application, where the direction of the arrows is the refrigerant flow direction and the thermal management system is in a cooling mode. Referring to fig. 16, 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, so that a heat exchange cycle is completed.

Because the heat exchange assembly 6 and the gas-liquid distribution assembly 5 are disposed in the gas-liquid separator 100 at the same time, the heat exchange assembly 6 and the gas refrigerant after heat exchange may exchange heat with the liquid refrigerant stored in the first cylinder 1, and the liquid refrigerant stored in the first cylinder 1 may be gasified after heat exchange, and then enter the compressor, and then enter the heat exchange cycle, which may affect the performance of the thermal management system. The second part of at least first barrel 1 has thermal-insulated function in this application, can reduce the heat exchange of the gaseous refrigerant in liquid refrigerant and heat exchange assembly 6 and the first chamber 10 in the first barrel 1 to guarantee thermal management system's heat transfer performance.

Under the condition that the diameter of the second cylinder 2 is not changed, the design of the heat exchange assembly 6 can influence the volume of the first cylinder 1 and the heat exchange capacity of the heat exchange assembly 6 at the same time. When the volume of the heat exchange component 6 is large, the heat exchange performance of the heat exchange component 6 is good, but because the volume of the second cylinder 2 of the gas-liquid separator 100 is certain, when the volume of the heat exchange component 6 is large, the volume of the first cylinder 1 needs to be reduced to complete assembly, and at the moment, the volume of the first cylinder 1 is relatively small. Because heat exchange assembly 6's heat transfer performance is better, the refrigerant temperature that gets into compressor 300 this moment is higher, and the refrigerant temperature before the throttle is also lower under the refrigeration mode, and thermal management system's heat transfer performance is better, but because the volume of first barrel 1 is less, the vapor-liquid separation effect of gas-liquid separation subassembly 5 is relatively poor, and the stock solution volume of first barrel 1 is less, has more liquid to get into compressor 300, can produce "liquid hammer" phenomenon, damages the compressor. If the volume of the heat exchange assembly 6 is reduced in order to increase the volume of the first cylinder 1, the heat exchange performance of the heat exchange assembly 6 is poor, the heat exchange performance of the heat management system is less beneficial, and the heat exchange efficiency is relatively low. Therefore, the volume of the heat exchange assembly 6 and the volume of the first cylinder 1 (i.e. the liquid storage amount of the first cylinder 1) need to be balanced, so that the two can be matched well.

The heat exchange performance of the heat exchange assembly 6 is related to the volume of the heat exchange assembly 6, the volume of the heat exchange assembly 6 influences the pressure manifold of the core body thickness, namely, when the pressure manifold is large, the volume of the heat exchange assembly 6 is also large, and the heat exchange performance of the heat exchange assembly 6 is also good. Since the collecting pipe is disposed between the first cylinder 1 and the second cylinder 2, the collecting pipe may affect the volume of the first cylinder 1.

In the application, the outer diameter of the first collecting pipe is larger than or equal to that of the second collecting pipe, the value range of an included angle R1 related to the outer diameter of the first collecting pipe 61 is larger than or equal to 5 degrees and smaller than or equal to R1 and smaller than or equal to 120 degrees, the heat exchange performance of the heat exchange assembly and the liquid storage amount of the first cylinder body 1 can be well balanced in the value range, the heat exchange performance and the liquid storage amount are enabled to be well matched, and therefore the performance of the heat management system is enabled to be better. Because the heat exchange assembly 6 further comprises the second collecting pipe 62, the value range of the included angle R2 related to the second collecting pipe 62 is set to be not less than 5 degrees and not more than R2 and not more than 120 degrees, and the heat exchange performance of the heat exchange assembly and the liquid storage amount of the first cylinder 1 can be better balanced.

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.

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, comprising: the device comprises a first cylinder (1), a second cylinder (2) 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), the first cavity (10) is positioned in the second cylinder (2), and the first cavity (10) is positioned outside the first cylinder (1);

at least part of the heat exchange assembly (6) is located in the first cavity (10), the heat exchange assembly (6) comprises a first collecting pipe (61) and a second collecting pipe (62), the first collecting pipe (61) and the second collecting pipe (62) both extend along a direction parallel to the axis of the first cylinder (1), and the first collecting pipe (61) and the second collecting pipe (62) are both located between the first cylinder (1) and the second cylinder (2);

the second cylinder (2), the first collecting pipe (61) and the second collecting pipe (62) have projections on a first plane, the first plane is perpendicular to the axis of the first cylinder (1), and the projections of the first collecting pipe (61), the second collecting pipe (62) and the second cylinder (2) on the first plane are all circular in outline shape;

on a first plane, the center of the projected outer contour of the second cylinder (2) is marked as A, the midpoint of a connecting line between the center of the projected outer contour of the first collecting pipe (61) and the center of the projected outer contour of the second collecting pipe (62) is marked as B, the connecting line from the point A to the point B and an extension line thereof form a ray LI, the projected outer contour of the first collecting pipe (61) has a tangent point marked as C, the point C is positioned on one side of the first collecting pipe (61) far away from the ray LI, the tangent line from the point A to the point C and the extension line thereof form a ray L2, an included angle R1 is formed between L1 and L2, the diameter of the projected outer contour of the first collecting pipe (61) is larger than or equal to the diameter of the projected outer contour of the second collecting pipe (62), and the value range of the included angle R1 is not less than 5 degrees and not more than R1 and not more than 120 degrees;

the outer contour of the projection of the second collecting pipe (62) is provided with a tangent point marked as D, the point D is positioned on one side, away from the ray LI, of the second collecting pipe (62), a tangent line from the point A to the point D and an extension line of the tangent line form a ray L3, an included angle R2 is formed between L1 and L3, and the value range of the included angle R2 is more than or equal to 5 degrees and less than or equal to R2 and less than or equal to 120 degrees;

on a first plane, the diameter of the outer contour of the projection of the first collecting pipe (61) is D1, and D1 is more than or equal to 8mm and less than or equal to 16 mm; the diameter of the outer contour of the projection of the second collecting pipe (62) is D2, and D2 is more than or equal to 8mm and less than or equal to 16 mm; the diameter of the outer contour of the projection of the second cylinder (2) is D3, and D3 is more than or equal to 50mm and less than or equal to 100 mm;

along being on a parallel with the direction of the axis of first barrel (1), first pressure manifold (61) with second pressure manifold (62) sets up side by side, on first plane, the center of the projection of first pressure manifold (61) with the center coincidence of the projection of second pressure manifold (62), the value range of contained angle R1 is 5 degrees and is no less than R1 and no more than 30 degrees, the value range of contained angle R2 is 5 degrees and is no less than R2 and no more than 30 degrees.

2. A gas-liquid separator according to claim 1, characterized in that the projected outer contour of said first header (61) has a diameter in the first plane of D1, 8mm ≤ D1 ≤ 16 mm; the diameter of the outer contour of the projection of the second collecting pipe (62) is D2, and D2 is more than or equal to 8mm and less than or equal to 16 mm; the diameter of the outer contour of the projection of the second cylinder (2) is D3, and D3 is more than or equal to 50mm and less than or equal to 100 mm;

the first collecting pipe (61) and the second collecting pipe (62) are arranged in parallel and in a tangent mode, the value range of the included angle R1 is more than or equal to 10 degrees and less than or equal to R1 and less than or equal to 60 degrees, and the value range of the included angle R2 is more than or equal to 10 degrees and less than or equal to R2 and less than or equal to 60 degrees.

3. The gas-liquid separator according to claim 2, wherein the outer surface of said first header (61) is tangentially arranged to the inner surface of said second cylinder (2), the outer surface of said second header (62) is tangentially arranged to the inner surface of said second cylinder (2), the outer surface of said first header (61) is tangentially arranged to the outer surface of said second header (62), said angle R1 is in the range of 10 ° R2 °, said angle R2 is in the range of 10 ° R2 ° 56 °.

4. The gas-liquid separator according to claim 2, wherein said gas-liquid separator (100) further comprises a sleeve (53) having a circular cross-sectional shape, said sleeve (53) being located inside said first cylinder (1), the center of the projection of the sleeve (53) coinciding with the center of the projection of the second cylinder (2) in a first plane, the projected outer contour of said sleeve (53) having a diameter size of D4, 16mm or more D4 or less 25mm, 0.15 or more D4/D3 or less 0.5; the surface of first pressure manifold (61) with the surface of sleeve pipe (53) approximately tangent setting, the surface of second pressure manifold (62) approximately tangent setting with the surface of sleeve pipe (53), the surface of first pressure manifold (61) with the surface of second pressure manifold (62) tangent setting, the value range of contained angle R1 is 28 degrees and is no less than R1 and is no less than 60 degrees, the value range of contained angle R2 is 28 degrees and is no less than R2 and is no less than 60 degrees.

5. A gas-liquid separator according to any one of claims 2-4, wherein at least part of the side wall of the first cylinder (1) is recessed inwardly to form a first recess, and wherein the first header (61) and the second header (62) are arranged to correspond to the first recess, and wherein the first header (61) and the second header (62) are at least partially received in the first recess.

6. The gas-liquid separator according to claim 1, wherein the projected outer contour of said first header (61) has a diameter size of D1, 8mm ≤ D1 ≤ 16 mm; the diameter of the outer contour of the projection of the second collecting pipe (62) is D2, and D2 is more than or equal to 8mm and less than or equal to 16 mm; the diameter of the outer contour of the projection of the second cylinder (2) is D3, and D3 is more than or equal to 50mm and less than or equal to 100 mm;

on the first plane, the center of the projection of the first collecting pipe (61) and the center of the projection of the second collecting pipe (62) are not coincident, the included angle R1 ranges from 5 degrees to R1 degrees and is not more than 120 degrees, and the included angle R2 ranges from 5 degrees to R1 degrees and is not more than 120 degrees.

7. The gas-liquid separator according to claim 1, wherein said gas-liquid separator (100) further comprises a first flow guide portion (3), a second flow guide portion (4) and a gas-liquid distribution assembly (5), said gas-liquid separator (100) having a second chamber (20) communicating with said first chamber (10), said second chamber (20) comprising at least a space located within said first barrel (1);

the heat exchange assembly (6) further comprises a heat exchange tube (63) and a heat exchange piece (64), the heat exchange piece (64) is connected with the heat exchange tube (63), the heat exchange tube (63) and the heat exchange piece (64) are arranged around part of the first cylinder (1), one end of the heat exchange tube (63) is connected with the first collecting pipe (61), the other end of the heat exchange tube is connected with the second collecting pipe (62), and an inner cavity of the heat exchange tube (63) is communicated with an inner cavity of the first collecting pipe (61) and an inner cavity of the second collecting pipe (62);

the first flow guide part (3) and the second cylinder (2) are fixedly arranged, the first flow guide part (3) is provided with a third cavity (30), 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), the first flow guide part (3) and the second flow guide part (4) are positioned on two opposite sides of the second cylinder (2), and the second flow guide part (4) is communicated with the first cavity (10) and the outside of the gas-liquid separator (100);

the gas-liquid distribution component (5) comprises a guide pipe (51), a connecting pipe (52) and a sleeve (53), at least part of the guide pipe (51) is positioned in the second cavity (20), the guide pipe (51) is fixedly arranged with the first guide part (3), at least part of the connecting pipe (52) is positioned in the third cavity (30), the connecting pipe (52) is fixedly arranged with the first diversion part (3), the sleeve (53) is sleeved outside the draft tube (51), the sleeve (53) and the draft tube (51) are fixedly arranged, one end of the draft tube (51) is communicated with the third cavity (30), the other end is communicated with the second cavity (20), one end of the connecting pipe (52) is communicated with the second cavity (20), the other end is communicated with the outside of the gas-liquid separator (100), one end of the sleeve (53) close to the first flow guide part (3) is communicated with the second cavity (20).

8. A thermal management system comprising the gas-liquid separator (100) according to any one of claims 1 to 7, further comprising an evaporator (200), a compressor (300), a condenser (400) and a throttling device (500), wherein the gas-liquid distribution assembly (5) is connected between the evaporator (200) and the compressor (300), and the heat exchange assembly (6) is connected between the condenser (400) and the throttling device (500).