CN112432401A

CN112432401A - Gas-liquid separator

Info

Publication number: CN112432401A
Application number: CN202010132712.4A
Authority: CN
Inventors: 李理; 董军启; 王美
Original assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2021-03-02

Abstract

The application discloses a gas-liquid separator, wherein a first cylinder of the gas-liquid separator is positioned on the inner side of a second cylinder, a heat exchange component is positioned outside the first cylinder, a first flow guide part and a second flow guide part are respectively and fixedly arranged with the second cylinder, a heat exchange tube is arranged around the first cylinder, a plurality of circulation channels which are arranged along the width direction of the heat exchange tube are arranged in the heat exchange tube, the plurality of circulation channels comprise a plurality of first circulation channels which are close to the second flow guide part and a plurality of second circulation channels which are far away from the second flow guide part relative to the plurality of first circulation channels, the distribution density of the plurality of first circulation channels is smaller than that of the plurality of second circulation channels, and/or the sectional area of the first circulation channels is smaller than that of the second circulation channels, so as to weaken the heat exchange capacity of the first circulation channels, and further weaken the heat exchange capacity of the heat exchange tube corresponding to the first circulation, and heat exchange between the liquid first fluid in the first cylinder and the heat exchange assembly is reduced, wherein the liquid first fluid is close to the second flow guide part.

Description

Gas-liquid separator

Technical Field

The application relates to the technical field of air conditioners, 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, the device that has the gas-liquid separation function is located the inboard of interior barrel, the device that has the heat transfer function is located the outside of interior barrel, liquid refrigerant after the gas-liquid separation is stored in interior barrel, the refrigerant that gets into in the intermediate layer chamber carries out the heat exchange with the device that has the heat transfer function, reduce the refrigerant temperature that gets into throttling arrangement under the refrigeration mode, improve refrigeration effect, and can further reduce compressor liquid impact phenomenon. But the inboard liquid refrigerant of interior barrel and interior barrel outside refrigerant and the device that has the heat transfer function also can carry out the heat exchange simultaneously, liquid refrigerant gets into the compressor after can being heated into the gaseous state in the interior barrel, leads to the refrigerant volume that flows in the thermal management system not required refrigerant volume under this operating mode, can cause adverse effect to the heat transfer performance of thermal management system, how to reduce the heat exchange of the inboard liquid refrigerant of interior barrel and interior barrel outside refrigerant and the device that has the heat transfer function, is the present problem of treating urgently.

Disclosure of Invention

In view of the above problems in the related art, the present application provides a gas-liquid separator capable of reducing heat exchange between a liquid fluid inside a first cylinder and a fluid outside the first cylinder.

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

a gas-liquid separator comprising: the gas-liquid heat exchanger comprises a first cylinder, a second cylinder, a first flow guide part, a second flow guide part, a gas-liquid distribution assembly and a heat exchange assembly; the first cylinder is positioned on the inner side of the second cylinder, the gas-liquid separator is provided with a first cavity and a second cavity which are communicated, the first cavity is positioned outside the first cylinder and inside the second cylinder, the second cavity at least comprises a space positioned inside the first cylinder, and the heat exchange assembly is positioned outside the first cylinder and on the inner side of the second cylinder; the gas-liquid distribution assembly comprises a flow guide pipe, the first flow guide part is fixedly connected with the second cylinder, the first flow guide part is provided with a third cavity, the flow guide pipe is fixedly connected with the first flow guide part, one end of the flow guide pipe is communicated with the third cavity, the other end of the flow guide pipe is communicated with the second cavity, and the third cavity is communicated with the first cavity; the second flow guide part is fixedly connected with the second cylinder, and the first flow guide part and the second flow guide part are positioned on two opposite sides of the second cylinder; the heat exchange component comprises a heat exchange tube, the heat exchange tube surrounds the outside of the first cylinder, the cross section of the heat exchange tube is flat, the heat exchange tube internally comprises a plurality of circulation channels extending along the heat exchange tube, and the circulation channels are arranged along the width direction of the heat exchange tube and are spaced from each other; the plurality of flow channels comprise a plurality of first flow channels close to the second flow guide part and a plurality of second flow channels far away from the second flow guide part relative to the plurality of first flow channels, the distribution density of the plurality of first flow channels is smaller than that of the plurality of second flow channels, and/or the sectional area of the first flow channels is smaller than that of the second flow channels.

A plurality of circulation passageways of heat exchange tube in this application include a plurality of first circulation passageways that are close to second water conservancy diversion portion and a plurality of second circulation passageways that keep away from second water conservancy diversion portion for a plurality of first circulation passageways, a plurality of first circulation passageways's distribution density is less than a plurality of second circulation passageways's distribution density, and/or, first circulation passageway's sectional area is less than the sectional area of second circulation passageway, in order to weaken first circulation passageway's heat transfer capacity, thereby weaken the heat transfer capacity of the heat exchange tube that first circulation passageway corresponds, reduce in the first barrel and be close to the liquid first fluid of second water conservancy diversion portion and heat exchange assembly's heat exchange.

Optionally, the plurality of flow channels are arranged in a non-equidistant manner along the width direction of the heat exchange tube, and the distribution density of a part of the flow channels close to the second flow guide part is the minimum; and/or the cross-sectional areas of the plurality of flow channels are unequal, and the cross-sectional area of the flow channel close to the second flow guide part is the smallest.

Optionally, the plurality of flow channels are arranged at equal intervals along the width direction of the heat exchange tube, and the cross-sectional area of the flow channels is gradually reduced along the direction from the first flow guide part to the second flow guide part.

Optionally, the cross-sectional areas of the plurality of flow channels are the same, and the distance between two adjacent flow channels gradually increases along the direction from the first flow guide part to the second flow guide part.

Optionally, along a direction from the first flow guiding part to the second flow guiding part, the cross-sectional areas of the plurality of flow channels gradually increase and then gradually decrease; and/or the distance between two adjacent flow channels is gradually increased and then gradually decreased.

Optionally, the heat exchange assembly comprises at least two heat exchange tubes, the at least two heat exchange tubes are arranged in parallel in a direction parallel to the axis of the gas-liquid separator, and the cross-sectional area of a flow channel of the heat exchange tube close to the second flow guide part is smaller than the cross-sectional area of the flow channel of the heat exchange tube far away from the second flow guide part; and/or the distribution density of a plurality of the circulation channels of the heat exchange tube close to the second flow guide part is smaller than that of a plurality of the circulation channels of the heat exchange tube far away from the second flow guide part.

Optionally, every the heat exchange tube is a plurality of the circulation passageway equidistance is arranged, is closest to second water conservancy diversion portion the heat exchange tube is adjacent the circulation passageway interval is less than other the heat exchange tube is adjacent the circulation passageway interval, and/or, is closest to the second water conservancy diversion portion the heat exchange tube the cross-sectional area of circulation passageway is less than other the cross-sectional area of the circulation passageway of heat exchange tube.

Optionally, the heat exchange assembly further includes a first collecting pipe and a second collecting pipe, one end of each heat exchange tube is inserted into the first collecting pipe, the other end of each heat exchange tube is inserted into the second collecting pipe, one end of the first collecting pipe is sealed and provided with the other end connected with the first flow guiding part, one end of the second collecting pipe is sealed and provided with the other end connected with the second flow guiding part, and each circulation channel is communicated with the inner cavity of the first collecting pipe and the inner cavity of the second collecting pipe.

Optionally, the heat exchange assembly further includes a first collecting pipe, a second collecting pipe, and a third collecting pipe, the heat exchange tubes comprise a first heat exchange tube and a second heat exchange tube, one end of the first heat exchange tube is inserted in the first collecting pipe, the other end of the first heat exchange tube is inserted in the third collecting pipe, one end of the second heat exchange tube is inserted in the second collecting pipe, the other end of the second heat exchange tube is inserted in the third collecting pipe, one end of the first collecting pipe is sealed, the other end of the first collecting pipe is connected with the first flow guide part, one end of the second collecting pipe is sealed, the other end of the second collecting pipe is connected with the second flow guide part, both ends of the third collecting pipe are sealed, each flow passage of the first heat exchange pipe is communicated with the inner cavity of the first collecting pipe and the inner cavity of the third collecting pipe, and each flow channel of the second heat exchange tube is communicated with the inner cavity of the second collecting pipe and the inner cavity of the third collecting pipe.

Optionally, the heat exchange assembly further includes a first collecting pipe, a second collecting pipe and a partition plate, one end of the first collecting pipe is connected to the first flow guiding part, the other end of the first collecting pipe is connected to the second flow guiding part, two ends of the second collecting pipe are both sealed, and the partition plate is inserted into the first collecting pipe and/or the second collecting pipe; the number of the partition plates is one, the partition plates are inserted into the first collecting pipe, so that the inner cavity of the first collecting pipe is divided into a first sub cavity and a second sub cavity, and the first sub cavity and the second sub cavity are arranged in parallel along the direction parallel to the axis of the gas-liquid separator; every heat exchange tube one end peg graft in first pressure manifold, the other end peg graft in the second pressure manifold, the heat exchange tube includes first heat exchange tube and second heat exchange tube, every of first heat exchange tube the circulation passageway all communicates the first subcavity of first pressure manifold with the inner chamber of second pressure manifold, every of second heat exchange tube the circulation passageway all communicates the second subcavity of first pressure manifold with the inner chamber of second pressure manifold.

Drawings

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

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

FIG. 3 is a cut-away perspective view of a heat exchange assembly of an embodiment of a gas-liquid separator of the present application;

FIG. 4 is a schematic cross-sectional view of a heat exchange assembly of an embodiment of a gas-liquid separator of the present application;

FIG. 5 is a schematic view of an assembly of a first diversion part, a second diversion part and a gas-liquid separator assembly according to an embodiment of the present disclosure;

FIG. 6 is a schematic perspective view of a first deflector according to an embodiment of the present disclosure;

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

FIG. 8 is a schematic view of a cutaway perspective view of a heat exchange assembly of an embodiment of a gas-liquid separator of the present application;

FIG. 9 is a schematic cross-sectional view of a heat exchange tube of an embodiment of the gas-liquid separator of the present application wherein the cross-sectional area of the flow channels is non-uniformly disposed;

FIG. 10 is a schematic cross-sectional view of a heat exchange tube of an embodiment of the gas-liquid separator of the present application wherein the cross-sectional area of the flow channels is non-uniformly disposed;

FIG. 11 is a schematic cross-sectional view of a heat exchange tube of an embodiment of the gas-liquid separator of the present application wherein the flow channels are non-uniformly distributed;

FIG. 12 is a schematic perspective view of another embodiment of a heat exchange assembly of an embodiment of a gas-liquid separator of the present application;

FIG. 13 is a schematic perspective view of another embodiment of a heat exchange assembly of an embodiment of a gas-liquid separator of the present application;

FIG. 14 is a schematic perspective view of a further embodiment of a heat exchange assembly of an embodiment of a gas-liquid separator of the present application;

fig. 15 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 recess;

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; 316. a first avoidance portion; 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; 421. a second avoidance portion; 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; 631. a first heat exchange tube; 632. a second heat exchange tube; 64. a heat exchange member; 641. a first heat exchange member; 642. a second heat exchange member; 65. a third header pipe;

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

Detailed Description

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

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

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

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

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

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

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

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

In the present embodiment, referring to fig. 6, 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 along an axial direction of the gas-liquid separator 100, the first member 31 is fixedly arranged with the first cylinder 1, the second member 32 is fixedly arranged with the second cylinder 2, and the third chamber 30 includes at least a space between the first member 31 and the second member 32. The first member 31 includes a first through hole 33 communicating with the third chamber 30 and a second through hole 34 communicating with the second chamber 20, and the second member 32 includes a third through hole 35 communicating with the outside of the gas-liquid separator 100.

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

The projection of the first cylinder 1 falls entirely within the projection of the first member 31 in the axial direction of the gas-liquid separator 100, and the outer contour shape of the first member 31 is substantially the same as the cross-sectional shape of the first cylinder 1.

The 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 surface 314 and a second side wall surface 315. The first step surface 313 is connected to the first sidewall surface 314 in an extending manner and connected to the second sidewall surface 315 in an extending manner. 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 each form an opening at the first end surface 311 and the second end surface 312. The upper end surface of the first cylinder 1 is fixedly connected with the first member 31 by soldering or gluing.

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 (not shown) with a second channel, a fastener (not shown) for connecting the first connecting piece 73 and the second connecting piece, and a sealing piece (not shown) 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 should be understood that, in the present application, the pipe connecting assembly is connected to the second component 32, and one of the first connecting member 73 and the second connecting member may be integrally formed with the second component 32 (refer to fig. 2), or the pipe connecting assembly and the second component 32 may be separately formed and then connected together.

In some embodiments, referring to fig. 3, 4 and 6, an edge portion of the opening of the first through hole 33 located on the second end surface 312 extends toward the second chamber 20 to form a first extension portion 331, and an inner sidewall of the first extension portion 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, referring to fig. 7, the second flow guiding portion 4 includes a third member 41 and a fourth member 42 that are disposed at an interval, the third member 41 covers an end of the second cylinder 2 away from the first flow guiding portion 3, and the fourth member 42 covers an end of the first cylinder 1 away from the first flow guiding portion 3. In the axial direction of the gas-liquid separator 100, the projection of the third member 41 falls entirely within the projection of the second cylinder 2, and the projection of the 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 sealingly connected to part of the inner wall surface of the second cylinder 2. In other embodiments, the third member 41 may be similar in structure to the second member 32, the third member 41 having a stepped surface against which the second cylinder 2 abuts, the projection of the second cylinder 2 falling entirely in the projection of the third member 41 in the axial direction of the gas-liquid separator 100; the fourth member 42 may be similar in structure to the second member 32, and the fourth member 42 may have a stepped surface against which the first cylinder 1 abuts, in the axial direction of the gas-liquid separator 100, in a projection of the fourth member 42 into which the projection of the first cylinder 1 completely falls.

The third member 41 has a fourth through hole 43 connecting the outside of the gas-liquid separator 100 and the first chamber 10, and the fourth through hole 43 is formed with openings on both side surfaces of the third member 41 opposite to each other. In some embodiments, the opening formed on one side of the fourth through hole 43 close to the first cavity 10 is larger than the opening formed on one side far from the first cavity 10, as shown in fig. 3, in particular, 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, the size of the cross section of one end of the second section is the same as that of the first section, and the size of the cross section of the other end of the second section is larger than that of the first section.

The gas-liquid separator 100 is provided with a first supporting member 71 abutted between the third member 41 and the fourth member 42, and in this embodiment, as shown in fig. 2 to 5, the first supporting member 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 supporting member 71, so as to increase the stability of the first supporting member 71 for 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 guide portion 4 may only include the third member 41 covering the second cylinder 2, and the first cylinder 1 includes a cylinder and a bottom cover integrally formed with the cylinder. The 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 to 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, referring to fig. 2-5, the gas-liquid distribution assembly 5 includes a flow guide tube 51, a connecting tube 52, a sleeve 53 and a first plate 54. The sleeve 53 is sleeved outside the guide tube 51, the first plate 54 has a through hole, one end of the guide tube 51 passes through the through hole to enable the first plate 54 to be sleeved on the upper portion of the guide tube 51, and the first plate 54 is located above the sleeve 53. Part of the side wall of the first extension 331 is received in the through hole of the first plate 54, completing the fixing of the first plate 54. After one end of the duct 51 passes through the through hole of the first plate 54, the end surface thereof abuts against the lower side surface of the first member 31, and the inner cavity of the duct 51 communicates with the first through hole 33.

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

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

In the present embodiment, the sleeve 53, the duct 51 and the connecting tube 52 are hollow cylinders with a substantially circular cross section. The delivery tube 51 is connected at one end to the first member 31 and communicates with the third chamber 30, and is open at the other end and communicates with the passage 40. The connection pipe 52 has one end connected to the first member 31 and communicates with the second chamber 20, and the other end connected to the second member 32 and communicates with the outside of the gas-liquid separator 100. One end of the cannula 53 adjacent the fourth member 42 is self-sealing and the other end is open and in communication with the second lumen 20. The inner side wall of the end, close to the fourth component 42, of the sleeve 53 is provided with a limiting structure 531, and the end of the guide pipe 51 extends into the limiting structure, so that the sleeve 53 and the guide pipe 51 are fixed and can be used for limiting the displacement of the sleeve 53, but the design of the limiting structure does not affect the flow of the first fluid, and referring to fig. 4, the limiting structure 531 is three protrusions which are uniformly distributed along the circumferential direction of the inner wall of the sleeve 53.

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

In some embodiments, the side wall of the draft tube 51 near the end of the first member 31 is opened with a balance hole (not shown) for communicating the passage 40 with the inner cavity of the draft tube 51, and the balance hole is used for reducing the phenomenon that the liquid first fluid is sucked into the compressor 300 due to the pressure difference when the compressor 300 is stopped.

The 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 53, 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 300 to the first fluid is better, and the filter 721 prevents impurities from entering the compressor 300 through the oil return hole.

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

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

In some other embodiments, the duct 51 is U-shaped and has one end higher than the other, the higher end connected to the first member 31 and the lower end open. The open end is spaced a predetermined distance from the second end face 312. A connecting pipe 52 is arranged in the first cylinder 1, one end of the connecting pipe is connected to the second part 32, the other end of the connecting pipe passes through the second through hole 34 and is communicated with the second cavity 20, the lower end surface of the connecting pipe 52 is lower than the open end, so that after the gas-liquid mixed refrigerant enters the second cavity 20 through the connecting pipe 52, the liquid refrigerant sinks due to gravity, the gas refrigerant floats upwards and flows into the U-shaped guide pipe 51 from the open end, and then enters the first cavity 10 through the third cavity 30.

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

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

In this embodiment, the gas-liquid separator 100 includes a heat exchange assembly 6 at least partially disposed in the first chamber 10, and 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 to form a first recess 11 facing away from the second cylinder 2, and at least part of the first header 61 and the second header 62 are accommodated in the first recess 11. In the axial direction of the gas-liquid separator 100, the first member 31 is provided with a first relief portion 316 at a portion corresponding to the first concave portion 11 to facilitate connection and assembly of the first header 61 and the second member 32. In the axial direction of the gas-liquid separator 100, a second relief portion 421 is provided at a portion of the fourth member 42 corresponding to the first recess 11 to facilitate connection and assembly of the second header 62 and the third member 41. Alternatively, the first cylinder 1 may not be provided with the first recess 11 and the second recess 12.

The heat exchange tube 63 has a width greater than its thickness so as to be flat, that is, the heat exchange tube 63 has a flat cross-sectional shape, the number of the heat exchange tubes 63 includes at least one, each of the heat exchange tubes 63 includes a plurality of flow channels 631 extending along the heat exchange tube 63, and the plurality of flow channels 631 are spaced apart from each other.

In this embodiment, the number of the heat exchange tubes 63 is one, one wide heat exchange tube 63 is disposed around the first cylinder 1 to form an approximately cylindrical shape, one end of the heat exchange tube 63 is connected to the first collecting pipe 61, and the other end is connected to the second collecting pipe 62. Each flow channel 631 of the heat exchange tube 63 communicates between the internal cavity of the first header 61 and the internal cavity of the second header 62.

In the present application, a plurality of the flow channels 631 are arranged in a row in a direction parallel to the axis of the gas-liquid separator 100, i.e., arranged in the width direction of the heat exchange tube 63, the plurality of flow channels 631 includes a plurality of first flow channels (not shown) adjacent to the second guide part 4 and a plurality of second flow channels (not shown) distant from the second guide part 4 with respect to the plurality of first flow channels, the distribution density of the plurality of first flow channels is less than that of the plurality of second flow channels, and/or the cross-sectional area of the first flow channels is less than that of the second flow channels, the purpose of the heat exchange assembly is to weaken the heat exchange capability of the flow channel 631 close to the second flow guiding part 4, so as to weaken the heat exchange capability of the heat exchange tube 63 corresponding to the flow channel 631, and reduce the heat exchange between the liquid-state first fluid close to the second flow guiding part 4 in the first cylinder 1 and the heat exchange assembly 6.

As shown in fig. 3, 4, 8, and 9, in the present embodiment, a plurality of flow channels 631 are arranged at equal intervals in the width direction of the heat exchange tube 63. The sectional areas of the plurality of flow channels 631 are gradually reduced in a direction toward the second guide part 4 from the first guide part 3, and the heat exchange tubes 63 closer to the second guide part 4 have a weaker heat exchange capability as the sectional areas of the flow channels 631 closer to the second guide part 4 are smaller. Since the liquid first fluid is stored at the bottom of the first cylinder 1, that is, at the end of the first cylinder 1 close to the second flow guiding part 4, the heat exchange capability of the heat exchange tube 63 close to the second flow guiding part 4 is weakened, and the heat exchange between the liquid first fluid close to the second flow guiding part 4 in the first cylinder 1 and the heat exchange assembly 6 is reduced.

The plurality of flow channels 631 are arranged at equal intervals, which means that the centers of the flow channels 631 are arranged at equal intervals. The flow channels 631 extend along the length direction of the heat exchange tube 63, two adjacent flow channels 631 are spaced apart, and each flow channel 631 has a closed contour line in the cross section of the heat exchange tube 63, and the contour line may be circular (see fig. 9), square (see fig. 10), or irregular (see fig. 11), as long as the flow of the second fluid is not affected, which is not limited in the present application. The center of the flow channel 631 refers to the center of the contour line of the cross section of the flow channel 631, such as the center of a circle, the center of gravity of a triangle, or the center of gravity of a square. The equidistant arrangement means that the centers of the adjacent flow channels 631 are equally spaced. Alternatively, the centers of the plurality of flow channels 631 may or may not be arranged in a straight line. The sectional area of the flow channel 631 is an area of a figure surrounded by the contour line of the sectional area of the flow channel 631, and generally, the larger the sectional area of the flow channel 631 is, the better the heat exchange capability of the heat exchange pipe 63 is.

In some other embodiments, referring to fig. 10, along the direction from the first flow guiding part 3 to the second flow guiding part 4, the cross-sectional area of the flow channel 631 may gradually increase and then gradually decrease, the cross-sectional area of the flow channel 631 near the second flow guiding part 4 is relatively smaller, and the heat exchange capacity of the heat exchange tube 63 near the second flow guiding part 4 is relatively weaker, so as to achieve the purpose of reducing the heat exchange between the liquid-state first fluid near the second flow guiding part 4 in the first cylinder 1 and the heat exchange assembly 6.

In some other embodiments, each of the flow channels 631 has an equal cross-sectional area, and the plurality of flow channels 631 are arranged at equal intervals in the width direction of the heat exchange pipe 63. Referring to fig. 11, the distribution density of the flow channels 631 gradually decreases in a direction from the first flow guide part 3 toward the second flow guide part 4, that is, the distance between two adjacent flow channels 631 is gradually increased. The pitch of the adjacent two flow channels 631 is the pitch of the centers of the flow channels 631. Generally, the greater the distribution density of the flow channels 631, the better the heat exchange capacity of the heat exchange tubes 63.

In some other embodiments, the plurality of flow channels 631 of the heat exchange tube 63 may be arranged in a non-equidistant manner, and the cross-sectional areas of the plurality of flow channels 631 are also different. For example, along the direction from the first flow guiding part 3 to the second flow guiding part 4, the distribution density of the flow channels 631 is gradually reduced, and the sectional area of the flow channels 631 is also gradually reduced, as long as the purpose of reducing the heat exchange capability of the heat exchange tubes 63 close to the second flow guiding part 4 and reducing the heat exchange between the liquid-state first fluid close to the second flow guiding part 4 in the first cylinder 1 and the heat exchange assembly 6 can be achieved, which is not limited in the present application.

The non-uniform variation of the flow channels 631 includes, but is not limited to, the gradual variation described above, and may also be a zoned variation, for example. Optionally, the heat exchange tube 63 is divided into a plurality of regions along the width direction, the flow channels 631 in each region are uniformly arranged, that is, the flow channels 631 in each region are arranged at equal intervals and have the same cross-sectional area, but the flow channels 631 in different regions are non-uniformly changed, for example, along the direction from the first flow guide part 3 to the second flow guide part 4, the cross-sectional area of the flow channel 631 in the region is smaller in the region closer to the second flow guide part 4; or the closer to the area of the second flow guide 4, the less dense the distribution of the flow channels 631 in this area.

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.

The heat exchanging element 64 is connected to the heat exchanging pipe 63, 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, and the first heat exchanging element 641 and the second heat exchanging element 642 are respectively fixedly connected to the heat exchanging pipe 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, and 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. 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.

In the present embodiment, as shown in fig. 8, the heat exchanging element 64 has a staggered teeth structure, and in other embodiments, the heat exchanging element 64 may have other shapes, for example, a hollow or solid strip structure, a solid or hollow corrugated structure, a louver structure, any structure with openings, any structure with protrusions, or any structure with grooves on the surface, so long as the purpose of guiding the flow of the first fluid and increasing the heat exchanging effect of the first fluid with the heat exchanging core 63 can be achieved.

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

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

In the present application, if the stored liquid first fluid exchanges heat with the heat exchange assembly 6 or the first fluid in the first cavity 10, the stored liquid first fluid may be heated to a gaseous state and enter a heat exchange cycle of the thermal management system, which may affect the heat exchange performance of the thermal management system, so that by weakening the heat exchange performance of the heat exchange tube 63 near one side of the second flow guiding part 4, the heat exchange between the liquid first fluid in the first cylinder 1 and the first fluid in the heat exchange assembly 6 or the first cavity 10 is reduced, and the normal operation of the thermal management system is ensured, 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. 12, which is different from the above-described embodiment in the structure of the heat exchange module 6, the embodiment is embodied such that the number of the heat exchange tubes 63 is two or more, the two or more heat exchange tubes 63 are arranged side by side in a direction parallel to the axis of the gas-liquid separator 100, all the heat exchange tubes 63 are arranged around the first cylinder 1 in the same direction, and each of the heat exchange tubes 63 has a cylindrical shape. Each heat exchange tube 63 has one end connected to the first header 61 and the other end connected to the second header 62. One end of the first collecting pipe 61 is sealed and the other end is connected with the first flow guiding part 3, and one end of the second collecting pipe 62 is sealed and the other end is connected with the second flow guiding part 4. Each flow channel of each heat exchange tube 63 communicates with the inner cavity of the first header 61 and the inner cavity of the second header 62.

The second fluid is distributed from the first header 61 to each flow channel of each heat exchange tube 63, completes the heat exchange in the first chamber 10, and then converges to the second header 62. Referring to fig. 12, the number of the heat exchange pipes 63 is two, and the heat exchange assemblies 6 are in a parallel structure.

Alternatively, in the present embodiment, the heat exchange between the liquid-state first fluid in the first cylinder 1 and the first fluid in the heat exchange assembly 6 or the first cavity 10 can be reduced by weakening the heat exchange capability of only one heat exchange tube 63 near the second flow guiding part 4. The parts of this embodiment that are the same as the above embodiments will not be described again.

In another embodiment of the gas-liquid separator 100 according to the present application, as shown in fig. 13-14, the embodiment is different from the above-mentioned embodiment in the structure of the heat exchange assembly 6, and is specifically represented as follows, in this embodiment, the heat exchange assembly 6 comprises a first collecting pipe 61, a second collecting pipe 62, a third collecting pipe 65 and a heat exchange pipe 63, and the heat exchange pipe 63 comprises a first heat exchange pipe 632 and a second heat exchange pipe 633.

One end of the first heat exchange tube 632 is inserted into the first collecting tube 61, the other end is inserted into the third collecting tube 65, one end of the second heat exchange tube 633 is inserted into the second collecting tube 62, and the other end is inserted into the third collecting tube 65. One end of the first collecting pipe 61 is sealed and arranged at the other end to be connected with the first flow guiding part 3, one end of the second collecting pipe 62 is sealed and arranged at the other end to be connected with the second flow guiding part 4, and two ends of the third collecting pipe 65 are sealed. Each flow channel of the first heat exchange tube 632 is communicated with the inner cavity of the first collecting pipe 61 and the inner cavity of the third collecting pipe 65, and each flow channel of the second heat exchange tube 633 is communicated with the inner cavity of the second collecting pipe 62 and the inner cavity of the third collecting pipe 65.

The heat exchange assembly 6 includes at least one first heat exchange tube 632 and at least one second heat exchange tube 633. The second fluid is distributed from the first header 61 to each flow channel of each first heat exchange tube 632, the first heat exchange tube 632 completes the heat exchange in the first chamber 10, the second fluid is converged from the first heat exchange tube 632 to the third header 65, and is distributed to each flow channel of each second heat exchange tube 633 through the third header 65, the second heat exchange tube 633 completes the heat exchange in the first chamber 10, and then the second fluid is converged from the second heat exchange tube 633 to the second header 62. Referring to fig. 13, the number of the first heat exchanging pipes 632 and the second heat exchanging pipes 633 is one, and the heat exchanging assembly 6 is a serial structure. Referring to fig. 14, the number of the first heat exchange pipes 632 is two, the number of the second heat exchange pipes 633 is one, and the heat exchange assembly 6 has a series-parallel structure.

Alternatively, in this embodiment, the heat exchange between the liquid first fluid in the first cylinder 1 and the first fluid in the heat exchange assembly 6 or the first cavity 10 can be reduced by only weakening the heat exchange capability of the second heat exchange tube 633 or only weakening the heat exchange capability of the second heat exchange tube 633 closest to the second flow guiding part 4. Optionally, the circulation channels 631 inside the first heat exchange tube 632 may be arranged at equal intervals or at unequal intervals, and the sectional areas of the plurality of circulation channels 631 may be equal or unequal, as long as all the circulation channels 631 of the overall heat exchange tube 63 are arranged at unequal intervals or have unequal sectional areas along the width direction of the heat exchange tube 63. The parts of this embodiment that are the same as the above embodiments will not be described again.

According to another embodiment of the gas-liquid separator 100 of the present application, the difference between this embodiment and the above-mentioned embodiment lies in the structural difference of the heat exchange assembly 6, and the specific expression is as follows, the heat exchange assembly 6 further includes a first header 61, a second header 62 and a partition plate (not shown), the partition plate is inserted into the first header 61 or the second header 62, and the partition plate partitions the chambers of the first header 61 and the second header 62, and the number of the partition plate is at least one.

For example, the number of the partition plates is one, and the partition plates are inserted into the first collecting pipe 61, one end of the first collecting pipe 61 is connected with the first flow guiding part 3, the other end of the first collecting pipe is connected with the second flow guiding part 4, two ends of the second collecting pipe 62 are sealed, and the partition plates are inserted into the first collecting pipe 61 to divide the inner cavity of the first collecting pipe 61 into a first sub cavity and a second sub cavity, and the first sub cavity and the second sub cavity are arranged in parallel along the axial direction parallel to the gas-liquid separator 100. One end of each heat exchange tube 63 is inserted into the first collecting pipe 61, and the other end is inserted into the second collecting pipe 62.

The heat exchange tube 63 comprises a first heat exchange tube 632 and a second heat exchange tube 633, each flow channel of the first heat exchange tube 632 is communicated with the first sub-cavity of the first collecting tube 61 and the inner cavity of the second collecting tube 62, and each flow channel of the second heat exchange tube 633 is communicated with the second sub-cavity of the first collecting tube 61 and the inner cavity of the second collecting tube 62.

In this embodiment, the heat exchange between the liquid first fluid in the first cylinder 1 and the first fluid in the heat exchange assembly 6 or the first cavity 10 can be reduced by only weakening the heat exchange capability of the second heat exchange tube 633. The flow channels 631 inside the first heat exchange tube 632 may be arranged at equal intervals or at unequal intervals, and the sectional areas of the flow channels 631 may be arranged equally or at unequal intervals, as long as all the flow channels 631 of the overall heat exchange tube 63 are arranged at unequal intervals or have unequal sectional areas in the width direction of the heat exchange tube 63. The parts of this embodiment that are the same as the above embodiments will not be described again.

Fig. 15 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. 15, a thermal management system includes a gas-liquid separator 100, an evaporator 200, a compressor 300, a condenser 400, and a throttling device 500. The evaporator 200 is connected to the gas-liquid distribution module 5 through the first guide portion 3 of the gas-liquid separator 100, an outlet of the evaporator 200 is communicated with the third through hole 35, the compressor 300 is connected to the gas-liquid distribution module 5 through the second guide portion 4 of the gas-liquid separator 100, and an inlet of the compressor 300 is communicated with the fourth through hole 43. The condenser 400 is connected with the heat exchange assembly 6 through the second flow guide part 4 of the gas-liquid separator 100, the outlet of the condenser 400 is communicated with the sixth through hole 44, the throttling device 500 is connected with the heat exchange assembly 6 through the first flow guide part 3 of the gas-liquid separator 100, and the inlet of the throttling device 500 is communicated with the fifth through hole 36. In the refrigeration mode, a high-temperature gaseous refrigerant flowing out of the compressor 300 exchanges heat through the condenser 400, flows through the heat exchange assembly 6 in the gas-liquid separator 100, is throttled by the throttling device 500, enters the evaporator 200 for heat exchange, enters the gas-liquid two-phase refrigerant flowing out of the evaporator 200 into the gas-liquid separator 100, is subjected to gas-liquid separation by the gas-liquid separator 100, and then flows into the compressor 300, so that one heat exchange cycle is completed. In the gas-liquid separator 100, under the action of the gas-liquid distribution assembly 5, the liquid refrigerant is stored in the first cylinder 1, the gaseous refrigerant exchanges heat with the heat exchange assembly 6, the temperature of the gaseous refrigerant rises after heat exchange, and the temperature of the refrigerant flowing in the heat exchange assembly 6 decreases, so that the temperature of the refrigerant entering the compressor 300 rises, and the temperature of the refrigerant flowing into the throttling device 500 decreases, thereby improving the refrigeration effect of the evaporator 200.

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

Because 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. Through the inhomogeneous change that sets up heat exchange tube 63 in this application, weaken the heat transfer ability of the heat exchange tube 63 that is close to second guide part 4, 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.

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

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

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

Claims

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

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

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

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

the heat exchange component (6) comprises a heat exchange tube (63), the heat exchange tube (63) surrounds the first barrel (1), the cross section of the heat exchange tube (63) is flat, the heat exchange tube (63) internally comprises a plurality of circulation channels (631) extending along the heat exchange tube (63), and the circulation channels (631) are arranged in the width direction of the heat exchange tube (63) and are spaced from each other;

the plurality of flow channels (631) comprise a plurality of first flow channels close to the second flow guide part (4) and a plurality of second flow channels far away from the second flow guide part (4) relative to the plurality of first flow channels, the distribution density of the plurality of first flow channels is smaller than that of the plurality of second flow channels, and/or the sectional area of the first flow channels is smaller than that of the second flow channels.

2. A gas-liquid separator according to claim 1, characterized in that a plurality of said flow channels (631) are arranged non-equidistantly in the width direction of said heat exchange tubes (63), and the distribution density of the part of the flow channels (631) adjacent to said second guiding portion (4) is minimized; and/or the cross-sectional areas of the plurality of flow channels (631) are unequal, the cross-sectional area of the flow channels (631) adjacent to the second flow guide (4) being minimal.

3. A gas-liquid separator according to claim 1, characterized in that a plurality of said flow channels (631) are arranged at equal intervals in the width direction of said heat exchange tube (63), the cross-sectional area of said flow channels (631) being successively reduced in the direction from said first flow guide portion (3) toward said second flow guide portion (4).

4. A gas-liquid separator according to claim 1, characterized in that a plurality of said flow channels (631) have the same cross-sectional area, and the distance between two adjacent flow channels (631) increases in the direction from said first flow guide (3) to said second flow guide (4).

5. A gas-liquid separator according to claim 1, characterized in that the cross-sectional area of the flow channels (631) increases and then decreases in a direction from the first flow guide (3) towards the second flow guide (4); and/or the distance between two adjacent flow channels (631) is gradually increased and then gradually decreased.

6. A gas-liquid separator according to claim 1, wherein the heat exchange assembly (6) comprises at least two of said heat exchange tubes (63), at least two of said heat exchange tubes (63) being juxtaposed in a direction parallel to the axis of the gas-liquid separator (100), the cross-sectional area of the flow channels (631) of said heat exchange tubes (63) adjacent to the second guiding portion (4) being smaller than the cross-sectional area of the flow channels (631) of said heat exchange tubes (63) remote from the second guiding portion (4); and/or the distribution density of a plurality of the flow channels (631) of the heat exchange tube (63) close to the second flow guide part (4) is less than the distribution density of a plurality of the flow channels (631) of the heat exchange tube (63) far away from the second flow guide part (4).

7. A gas-liquid separator as claimed in claim 6, characterized in that the flow channels (631) of each heat exchange tube (63) are arranged equidistantly, the distance between adjacent flow channels (631) of the heat exchange tube (63) closest to the second flow guide (4) being smaller than the distance between adjacent flow channels (631) of the other heat exchange tubes (63), and/or the cross-sectional area of the flow channels (631) of the heat exchange tube (63) closest to the second flow guide (4) being smaller than the cross-sectional area of the flow channels (631) of the other heat exchange tubes (63).

8. The gas-liquid separator according to claim 1, wherein the heat exchange assembly (6) further comprises a first collecting pipe (61) and a second collecting pipe (62), one end of each of the heat exchange tubes (63) is inserted into the first collecting pipe (61), the other end of each of the heat exchange tubes is inserted into the second collecting pipe (62), one end of the first collecting pipe (61) is sealed, the other end of each of the heat exchange tubes is connected with the first flow guiding portion (3), one end of the second collecting pipe (62) is sealed, the other end of each of the heat exchange tubes is connected with the second flow guiding portion (4), and each of the flow passages (631) communicates with the inner cavity of the first collecting pipe (61) and the inner cavity of the second collecting pipe (62).

9. The gas-liquid separator according to claim 1, wherein the heat exchange assembly (6) further comprises a first collecting pipe (61), a second collecting pipe (62) and a third collecting pipe (65), the heat exchange pipe (63) comprises a first heat exchange pipe (632) and a second heat exchange pipe (633), one end of the first heat exchange pipe (632) is inserted into the first collecting pipe (61), the other end of the first heat exchange pipe is inserted into the third collecting pipe (65), one end of the second heat exchange pipe (633) is inserted into the second collecting pipe (62), the other end of the second heat exchange pipe is inserted into the third collecting pipe (65), one end of the first collecting pipe (61) is sealed, the other end of the first collecting pipe is connected with the first flow guiding part (3), one end of the second collecting pipe (62) is sealed, the other end of the second collecting pipe is connected with the second flow guiding part (4), and both ends of the third collecting pipe (65) are, every of first heat exchange tube (632) circulation passageway (631) all communicates the inner chamber of first pressure manifold (61) with the inner chamber of third pressure manifold (65), every of second heat exchange tube (633) circulation passageway (631) all communicates the inner chamber of second pressure manifold (62) with the inner chamber of third pressure manifold (65).

10. The gas-liquid separator according to any one of claims 1 to 9, wherein the heat exchange assembly (6) further comprises a first collecting pipe (61), a second collecting pipe (62) and a partition plate, one end of the first collecting pipe (61) is connected with the first flow guiding part (3) and the other end is connected with the second flow guiding part (4), two ends of the second collecting pipe (62) are sealed, and the partition plate is inserted into the first collecting pipe (61) and/or the second collecting pipe (62);

the number of the partition plates is one, the partition plates are inserted into the first collecting pipe (61) in an inserting mode, so that an inner cavity of the first collecting pipe (61) is divided into a first sub cavity and a second sub cavity, and the first sub cavity and the second sub cavity are arranged in parallel along the direction parallel to the axis of the gas-liquid separator (100);

every heat exchange tube (63) one end peg graft in first pressure manifold (61), the other end peg graft in second pressure manifold (62), heat exchange tube (63) include first heat exchange tube (632) and second heat exchange tube (633), every of first heat exchange tube (632) circulation passageway (631) all communicates the first subcavity of first pressure manifold (61) with the inner chamber of second pressure manifold (62), every of second heat exchange tube (633) circulation passageway (631) all communicates the second subcavity of first pressure manifold (61) with the inner chamber of second pressure manifold (62).