Gas-liquid separator

Abstract

The invention discloses a gas-liquid separator, comprising: a housing having an inner cavity and provided with a discharge portion; the introduction pipe is installed on the shell and used for introducing a two-phase working medium into the inner cavity, at least part of the part, located in the inner cavity, of the introduction pipe is a centrifugal pipe section, at least part of the pipe wall of the centrifugal pipe section is provided with a first separation hole, and at least part of the liquid-phase working medium can enter the inner cavity through the first separation hole; the separation component is arranged in the shell and used for separating the inner cavity into a first cavity, a second cavity and a discharge cavity, the part, provided with the first separation hole, of the centrifugal tube section is located in the first cavity or located in the first cavity and the second cavity, and an outlet of the introduction tube is located in the second cavity; the separating part is provided with a first communicating port and a second communicating port, the gas-phase working medium in the first cavity can enter the second cavity through the second communicating port, the gas-phase working medium in the second cavity can enter the discharging cavity through the first communicating port, and the discharging cavity communicates with the discharging part.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchange systems, and in particular to a gas-liquid separator. Background Art

[0002] In the automotive heat exchange system, with the switching of working modes (such as switching of the defogger function), shutdown and restart, insufficient heat exchange of the refrigerant in the evaporator, driving on a road with a large slope and other working conditions, liquid refrigerant may enter the compressor, causing liquid hammer problems, which is not conducive to ensuring the service life of the compressor.

[0003] Therefore, how to provide a solution to overcome or alleviate the above-mentioned defects is still a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The object of the present invention is to provide a gas-liquid separator which can avoid the liquid hammer problem of the compressor to a large extent.

[0005] In order to solve the above technical problems, the present invention provides a gas-liquid separator, comprising: a shell, the shell having an inner cavity, and the shell is also provided with a discharge portion; an introduction pipe, installed in the shell, used to introduce a two-phase working medium into the inner cavity, the two-phase working medium including a gas phase working medium and a liquid phase working medium, at least a part of the part of the introduction pipe located in the inner cavity is a centrifugal tube section, at least a part of the centrifugal tube section is bent so that centrifugal force is generated when the two-phase working medium in the centrifugal tube section flows along the centrifugal tube section, and at least a part of the tube wall of the centrifugal tube section is provided with a first separation hole, and at least a part of the liquid phase working medium can enter through the first separation hole The inner cavity; a partition component is arranged in the shell and is used to separate the inner cavity into a first chamber, a second chamber and a discharge chamber. The part of the centrifugal tube segment provided with the first separation hole is located in the first chamber, or in the first chamber and the second chamber. The outlet of the introduction pipe is located in the second chamber. The partition component is provided with a first connecting port and a second connecting port. The gaseous working medium in the first chamber can enter the second chamber through the second connecting port, and the gaseous working medium in the second chamber can enter the discharge chamber through the first connecting port. The discharge chamber and the discharge part are connected.

[0006] In the above scheme, based on the centrifugal effect of the centrifugal tube section, most of the liquid phase working fluid in the two-phase working fluid can enter the first chamber through the first separation hole. With the switching of working modes (such as switching of the defogger function), shutdown and restart, insufficient heat exchange of the refrigerant in the evaporator, driving on a road with a large slope and other working conditions, even if some liquid phase working fluid splashes, or the liquid phase working fluid vaporizes and produces foam due to a sudden change in air pressure, these liquid phase working fluids can only enter the second chamber and are not easy to enter the discharge chamber. Therefore, the liquid phase working fluid entering the compressor and the liquid excitation problem caused by it can be greatly reduced, thereby protecting the compressor and extending the life of the compressor.

[0007] Optionally, it also includes a heat exchange pipeline, which includes: a gas-phase heat exchange branch, which is located at least in the discharge chamber and is used to heat the gas-phase working medium in the discharge chamber; and a liquid-phase heat exchange branch, which is located at least in the working chamber and is used to heat the liquid-phase working medium in the working chamber.

[0008] Optionally, the inner cavity also includes a liquid storage chamber, at least the first chamber and the second chamber are connected to the liquid storage chamber, the liquid-phase working medium in the first chamber can enter the liquid storage chamber, and the liquid-phase heat exchange branch is located in the liquid storage chamber for heating the liquid-phase working medium in the liquid storage chamber.

[0009] Optionally, the liquid-phase heat exchange branch includes a first liquid-phase pipe section and a second liquid-phase pipe section that are connected to each other, the first liquid-phase pipe section is located in the first chamber, the second liquid-phase pipe section is located in the second chamber, and the heat exchange area of ​​the first liquid-phase pipe section is larger than that of the second liquid-phase pipe section.

[0010] Optionally, the centrifugal tube segment is a spiral tube segment, and the spiral tube segment extends along the axial direction of the shell.

[0011] Optionally, along the flow direction of the two-phase working medium, the curvature of the spiral center axis of the spiral pipe segment gradually increases.

[0012] Optionally, the partition component includes a second partition, which is used to separate the first chamber and the second chamber, and the second partition is installed on the outside of the inlet pipe; and also includes a driving component, which is directly or indirectly connected to the second partition and is used to drive the second partition to move along the inlet pipe.

[0013] Optionally, the gas-liquid separator is a horizontal separator, and the first chamber, the second chamber and the discharge chamber are arranged in sequence along the axial direction of the gas-liquid separator; the gas-phase heat exchange branch and the liquid-phase heat exchange branch both include a first pipe segment, a second pipe segment and a transition pipe segment, the first pipe segment is located in the first chamber, the second pipe segment is located in the second chamber, the transition pipe segment is located outside the shell and is used to connect the first pipe segment and the second pipe segment, and the second partition plate can be displaced between the first pipe segment and the second pipe segment.

[0014] Optionally, the gas-liquid separator is a vertical separator, and the first chamber, the second chamber and the discharge chamber are arranged along the circumference of the gas-liquid separator; the inner wall surface of the shell is a cylindrical surface, the centrifugal tube segment is an arc-shaped tube segment, the plane where the arc-shaped central axis of the arc-shaped tube segment is located is perpendicular to the axial direction of the gas-liquid separator, and the center of the circle where the arc-shaped central axis of the arc-shaped tube segment is located is located on the central axis of the shell, and the second partition is plugged and assembled on the arc-shaped tube segment.

[0015] Optionally, at least a portion of the tube wall of the centrifugal tube section is provided with a second separation hole, and at least a portion of the gas-phase working medium can enter the first chamber and / or the second chamber through the second separation hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a first implementation of the gas-liquid separator provided by the present invention;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure after hiding the peripheral wall;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure after hiding the first end cover;

[0019] Figure 4 It is a structural schematic diagram of the inlet pipe and the heat exchange pipeline;

[0020] Figure 5 for Figure 1 Relative position diagram of the centrifugal tube section and the peripheral wall;

[0021] Figure 6 This is a structural schematic diagram of a second implementation of the gas-liquid separator provided by the present invention;

[0022] Figure 7 for Figure 6 A schematic diagram of the structure of the introduction pipe;

[0023] Figure 8 A schematic structural diagram of a third implementation of the gas-liquid separator provided by the present invention;

[0024] Fig. 9 for Figure 8 A schematic diagram of the structure after hiding the first end cover;

[0025] Fig.10 for Fig. 9 A schematic diagram of the structure after the first peripheral wall portion is hidden;

[0026] Fig.11 for Fig. 9 Schematic diagram of the structure after hiding all the peripheral walls;

[0027] Fig.12 for Fig.11 Schematic diagram of the structure from another perspective;

[0028] Fig.13 for Fig.12 Schematic diagram of the structure of the heat exchange pipeline;

[0029] Fig.14 A schematic structural diagram of a fourth implementation of the gas-liquid separator provided by the present invention;

[0030] Fig.15 for Fig.14 Schematic diagram of the structure after hiding the peripheral wall;

[0031] Fig.16 for Fig.15 A schematic diagram of the structure after hiding the first end cover, the second end cover and the first partition;

[0032] Fig.17 for Fig.14 Schematic diagram of the structure of the heat exchange pipeline;

[0033] Fig.18 This is a structural schematic diagram of a fifth implementation of the gas-liquid separator provided by the present invention;

[0034] Fig.19 for Fig.18 A schematic diagram of the structure after hiding the first end cover and the first peripheral wall portion;

[0035] Fig. 20 for Fig.19 Schematic diagram of the structure after hiding the first partition, the second partition and the third partition.

[0036] The following are the descriptions of the reference numerals:

[0037] 1 housing, 11 inner cavity, 111 discharge chamber, 112 working chamber, 112a first chamber, 112b second chamber, 112c liquid storage chamber, 12 discharge portion, 13 first end cover, 14 second end cover, 15 outer peripheral wall, 151 first peripheral wall portion, 152 second peripheral wall portion;

[0038] 2 introduction pipe, 21 centrifugal pipe section, 211 first separation hole, 212 second separation hole, 22 outlet, 23 import pipe section;

[0039] 3 partition member, 31 first partition plate, 311 first communication port, 32 second partition plate, 321 second communication port, 33 third partition plate, 34 fourth partition plate, 341 third communication port, 342 limiting plate;

[0040] 4 heat exchange pipeline, 41 gas phase heat exchange branch, 411 first gas phase pipe section, 412 second gas phase pipe section, 413 third gas phase pipe section, 414 gas phase transition pipe section, 42 liquid phase heat exchange branch, 421 first liquid phase pipe section, 422 second liquid phase pipe section, 423 third liquid phase pipe section, 424 liquid phase transition pipe section, 43 three-way valve, 44 working fluid inlet, 45 working fluid outlet. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] In the embodiments of the present invention, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features.

[0043] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0044] The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only references to the directions of the drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0045] In the description of the embodiments of the present invention, the term "plurality" refers to two or more than two. Moreover, when "plurality" is used to describe the number of different components, it does not indicate the relationship between the quantities of these components.

[0046] In the description of the embodiments of the present invention, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0047] In the description of the embodiments of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0048] Embodiment 1

[0049] Please refer to Figure 1-Figure 5 , Figure 1 This is a schematic structural diagram of a first implementation of the gas-liquid separator provided by the present invention. Figure 2 for Figure 1 Schematic diagram of the structure after hiding the outer wall. Figure 3 for Figure 2 Schematic diagram of the structure after hiding the first end cover, Figure 4 It is a schematic diagram of the structure of the inlet pipe and heat exchange pipeline. Figure 5 for Figure 1 Relative position diagram of the centrifugal tube section and the peripheral wall.

[0050] like Figure 1-Figure 5 As shown, the present invention provides a gas-liquid separator, which can be applied to heat exchange systems such as vehicle air conditioning systems and household air conditioning systems to achieve gas-liquid separation of two-phase working fluids. The two-phase working fluid can specifically be a mixture of a gas phase working fluid and a liquid phase working fluid, and the specific type of the two-phase working fluid is not limited here.

[0051] The gas-liquid separator comprises a shell 1 and an inlet pipe 2 .

[0052] The shell 1 is the external structure of the gas-liquid separator, and an inner cavity 11 is formed inside the shell. The gas-liquid separation process can be completed in the inner cavity 11. The shell 1 is provided with a discharge portion 12. The installation method of the discharge portion 12 on the shell 1 includes but is not limited to welding, clamping, flange connection, etc., as long as the reliability of the connection can be guaranteed, it is not limited here. The discharge portion 12 is connected to the inner cavity 11, and the gas phase working medium after the gas-liquid separation is completed can be discharged through the discharge portion 12.

[0053] The shell 1 also basically determines the overall shape of the gas-liquid separator. Figure 1 and Figure 2 As shown, the housing 1 can be roughly cylindrical, including a first end cover 13, a second end cover 14 and an outer peripheral wall 15. The first end cover 13 and the second end cover 14 can be arranged opposite to each other along the axial direction of the gas-liquid separator, and the outer peripheral wall 15 can connect the first end cover 13 and the second end cover 14 to enclose and form the aforementioned inner cavity 11. The discharge portion 12 can be specifically installed on the second end cover 14. In other implementations, the housing 1 can also be in other shapes, such as a cuboid, etc., as long as the aforementioned inner cavity 11 can be provided.

[0054] A portion of the inlet pipe 2 may be located outside the shell 1, and this portion of the inlet pipe 2 may be referred to as an inlet pipe section 23. The inlet pipe section 23 is used to connect to an upstream component in the heat exchange system to receive two-phase working fluid from the upstream component. Another portion of the inlet pipe 2 may be located inside the shell 1, that is, located in the inner cavity 11, and is used to introduce two-phase working fluid into the inner cavity 11.

[0055] At least part of the portion of the introduction tube 2 located in the inner cavity 11 is a centrifugal tube section 21, and at least part of the tube wall of the centrifugal tube section 21 is provided with a first separation hole 211. The two-phase working fluid can be centrifugally separated in the centrifugal tube section 21, wherein at least part of the liquid phase working fluid can enter the inner cavity 11 through the first separation hole 211, thereby achieving gas-liquid separation of the two-phase working fluid. Compared with the traditional gravity separation scheme, centrifugal separation has higher separation efficiency and better separation effect, and the volume requirement for the inner cavity 11 is relatively small, which makes the overall volume of the gas-liquid separator relatively small, and can be adapted for use in environments with relatively limited installation space such as automobiles.

[0056] Here, the embodiment of the present invention does not limit the specific structural form of the centrifugal tube section 21. In practical applications, those skilled in the art can set it according to specific needs as long as it can meet the requirements of use. Figure 1-Figure 4 In the implementation mode, the centrifugal tube segment 21 can be a spiral tube segment, and the spiral tube segment can extend along the axial direction of the shell 1, and the cross section of the spiral tube segment perpendicular to the axial direction can not change in the axial direction, that is, the spiral tube segment can be a tube segment with a constant spiral diameter. In addition, the centrifugal tube segment 21 can also be a tube segment in other forms such as an arc tube. In fact, as long as at least part of the centrifugal tube segment 21 presents a curved structure, centrifugal force can be generated in the centrifugal tube segment 21 to achieve centrifugal separation of the two-phase working medium.

[0057] In the embodiment of the present invention, the gas-liquid separator further includes a partition member 3, which is disposed in the housing 1 and is used to separate the inner cavity 11 into a discharge chamber 111 and a working chamber 112. The partition member 3 is provided with a first communication port 311, which can connect the discharge chamber 111 and the working chamber 112, and the aforementioned discharge portion 12 can be specifically connected to the discharge chamber 111. The portion of the centrifugal tube section 21 provided with the first separation hole 211 and the outlet 22 of the introduction tube 2 are both located in the working chamber 112.

[0058] In specific use, the liquid phase working medium discharged from the first separation hole 211 and the liquid phase working medium discharged from the outlet 22 can be retained in the working chamber 112, while the gas phase working medium separated in the working chamber 112 can enter the discharge chamber 111 through the first connecting port 311, and finally be discharged through the discharge portion 12. In this way, through the setting of the partition component 3, the liquid phase working medium in the two-phase working medium can be blocked and retained in the working chamber 112, and does not enter the discharge chamber 111. In this way, even in the working mode switching (such as the defogger function switching), shutdown and restart, insufficient heat exchange of the refrigerant in the evaporator, driving on a road with a large slope, etc., the liquid phase working medium is not easy to be discharged from the discharge portion 12, thereby avoiding the liquid hammer problem of the compressor to a large extent and prolonging the service life of the compressor.

[0059] In detail, Figure 2 and Figure 3 As shown, the partition component 3 may include a first partition plate 31, the plate surface of the first partition plate 31 may be perpendicular to the axial direction of the shell 1, a working chamber 112 may be formed between the first partition plate 31 and the first end cover 13, and a discharge chamber 111 may be formed between the first partition plate 31 and the second end cover 14.

[0060] The first communication port 311 may be specifically provided on the first partition plate 31. Figure 2 and Figure 3 According to the orientation and position relationship in the embodiment, the liquid phase separated from the two-phase working medium is accumulated at the bottom of the working chamber 112, and a liquid storage area can be formed at the bottom of the working chamber 112; the first connecting port 311 can be arranged at the top of the first partition 31 to be away from the liquid storage area. In this way, it is more difficult for the liquid phase working medium in the working chamber 112 to enter the discharge chamber 111 through the first connecting port 311. There can be multiple first connecting ports 311, and each first connecting port 311 can be arranged from the middle position of the top of the first partition 31 to both sides.

[0061] In some optional implementations, the gas-liquid separator provided by the present invention may further include a heat exchange pipeline 4, which may specifically be a high-pressure pipeline, and may include a gas-phase heat exchange branch 41 and a liquid-phase heat exchange branch 42. The gas-phase heat exchange branch 41 may be located at least in the discharge chamber 111, and is used to heat the gas-phase working medium in the discharge chamber 111, and may increase the dryness of the gas-phase working medium in the discharge chamber 111, thereby increasing the superheat of the gas-phase working medium discharged from the discharge portion 12. The liquid-phase heat exchange branch 42 may be located at least in the working chamber 112, and is used to exchange heat with the liquid-phase working medium in the working chamber 112, and may reduce the temperature of the fluid in the liquid-phase heat exchange branch 42, thereby increasing the supercooling of the fluid discharged from the working medium outlet 45.

[0062] In the above solution, the gas phase heat exchange branch 41 and the liquid phase heat exchange branch 42 can be arranged in parallel, such as Figure 2 and Figure 4 As shown, a three-way valve 43 may be provided at the intersection of the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42 to adjust the flow of the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42, thereby adjusting the superheat and subcooling of the system. It should be understood that in addition to the three-way valve 43, switch valves may also be provided on the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42, respectively, so that the flow control of the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42 can also be achieved.

[0063] Here, the embodiment of the present invention does not limit the specific structural form of the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42. In practical applications, those skilled in the art can set them according to the heating requirements of each chamber.

[0064] In some optional implementations, the partition member 3 is also used to separate the first chamber 112a and the second chamber 112b in the working chamber 112. At least the portion of the centrifugal tube segment 21 provided with the first separation hole 211 can be located in the first chamber 112a, that is, the first separation hole 211 can be located in the first chamber 112a, and the liquid phase working medium separated by the first separation hole 211 can be in the first chamber 112a. At least the outlet 22 of the introduction tube 2 can be located in the second chamber 112b, that is, the outlet 22 can be located in the second chamber 112b, and the working medium discharged through the outlet 22 can enter the second chamber 112b.

[0065] In detail, Figure 2 and Figure 3As shown, the partition member 3 may further include a second partition plate 32, and the second partition plate 32 may also be arranged perpendicular to the axial direction of the shell 1, and the second partition plate 32 may be located on the side of the first partition plate 31 facing the first end cover 13. In this way, a first chamber 112a may be formed between the second partition plate 32 and the first end cover 13, and a second chamber 112b may be formed between the second partition plate 32 and the first partition plate 31.

[0066] In practical applications, after the two-phase working medium enters the introduction pipe 2, centrifugal separation will occur in the centrifugal tube section 21, and at least part of the liquid phase working medium with a relatively large density in the two-phase working medium can be thrown out into the first chamber 112a through the first separation hole 211, and the gas phase working medium with a relatively small density in the two-phase working medium and the remaining liquid phase working medium that may exist can enter the second chamber 112b through the outlet 22. In this way, after the two-phase working medium enters the inner cavity 11 through the introduction pipe 2, more of the liquid phase working medium will remain in the first chamber 112a, while more of the gas phase working medium will enter the second chamber 112b. In detail, in the first chamber 112a, the liquid-phase working medium with higher density ejected through the first separation hole 211 will collide with the wall of the first chamber 112a to further increase the gas-liquid separation effect, and a small amount of gas-phase working medium with lower density further separated from the liquid-phase working medium ejected through the first separation hole 211 will move upward to the top of the first chamber 112a, while a larger amount of liquid-phase working medium with higher density will gather downward at the bottom of the first chamber 112a; in the second chamber 112b, the centrifugal structure of the centrifugal tube section 21 enables the two-phase working medium to be efficiently separated into gas and liquid at the outlet 22, a large amount of gas-phase working medium with lower density will be discharged and rise to the top of the second chamber 112b, and a small amount of liquid-phase working medium with higher density will be ejected and retained at the bottom of the second chamber 112b.

[0067] In the above scheme, if the liquid-phase working medium in the first chamber 112a wants to enter the discharge chamber 11, it needs to cross the two barriers of the first partition 31 and the second partition 32. It is more difficult for the liquid-phase working medium to enter the discharge chamber 11. Accordingly, the possibility of causing liquid hammer to the downstream compressor can be reduced, which is more conducive to ensuring the service life of the compressor.

[0068] The second partition plate 32 may be provided with a second communication port 321, and the gas phase working medium in the first chamber 112a may enter the second chamber 112b through the second communication port 321. Figure 2 and Figure 3According to the orientation and position relationship in the embodiment, the liquid phase separated by the first separation hole 211 can be accumulated at the bottom of the first chamber 112a to form a liquid storage area at the bottom of the first chamber 112a, and the second communication port 321 can be arranged at the top of the second partition 32 to be away from the liquid storage area; in this way, the liquid phase in the first chamber 112a is not easy to enter the second chamber 112b through the second communication port 321. The number of the second communication ports 321 can be multiple, and each second communication port 321 can be arranged from the middle position of the top of the second partition 32 to both sides.

[0069] Since the amount of gas phase working medium in the first chamber 112a is less than that in the second chamber 112b, the flow area formed by each second communication opening 321 is smaller than the flow area formed by each first communication opening 311. When the sizes of the second communication opening 321 and the first communication opening 311 are substantially the same, that is, the number of the second communication openings 321 is less than that of the first communication openings 311.

[0070] By setting the above-mentioned partition component 3 (second baffle 32), most of the liquid-phase working medium can be blocked in the first chamber 112a, and the first chamber 112a is not directly connected to the discharge chamber 111. In this way, the possibility of the liquid-phase working medium entering the discharge chamber 111 and being discharged through the discharge part 12 will be further reduced, which can reduce the liquid hammer problem to a greater extent.

[0071] The centrifugal tube section 21 may be completely located in the first chamber 112a, so that the centrifugal separation effect of the two-phase working medium in the first chamber 112a can be better. Alternatively, the centrifugal tube section 21 may also be partially located in the second chamber 112b, so that the part of the introduction tube 2 in the second chamber 112b can also further centrifuge the two-phase working medium, and the separation effect of the two-phase working medium in the second chamber 112b can be better.

[0072] Based on the setting that the working chamber 112 is divided into the first chamber 112a and the second chamber 112b, the liquid-phase heat exchange branch 42 may include a first liquid-phase pipe section 421 and a second liquid-phase pipe section 422 that are connected. The first liquid-phase pipe section 421 may be located in the first chamber 112a to heat the relatively large amount of liquid-phase working medium in the first liquid-phase pipe section 421. The amount of the gas-phase working medium generated by the heating is still relatively small relative to the amount of the liquid-phase working medium at the bottom of the first chamber 112a. The gas-phase working medium generated by the heating may rise to the top of the first chamber 112a and enter the second chamber 112b through the second connecting port 321. The second liquid phase pipe section 422 can be located in the second chamber 112b to heat the relatively small amount of liquid phase working fluid in the second chamber 112b. The gas phase working fluid generated by the heating is smaller in amount than the gas phase working fluid efficiently separated by the outlet 22 in the second chamber 112b. The gas phase working fluid generated by the heating will be discharged and rise to the top of the second chamber 112b, and finally enter the discharge chamber 111 through the first connecting port 311.

[0073] The heat exchange area of ​​the first liquid phase pipe section 421 may be larger than that of the second liquid phase pipe section 422 , so that it can better adapt to the relatively large amount of liquid phase working medium in the first chamber 112 a .

[0074] Here, the embodiment of the present invention does not limit the specific structural form of the first liquid phase pipe section 421 and the second liquid phase pipe section 422. In practical applications, those skilled in the art can set them according to specific needs, as long as the setting requirement that the heat exchange area of ​​the first liquid phase pipe section 421 is larger than that of the second liquid phase pipe section 422 can be met. Figure 2 In the implementation method, the second liquid phase pipe section 422 can be a double-branch double-row pipe structure, and the first liquid phase pipe section 421 can be a double-branch six-row pipe structure; in addition, the heat exchange area of ​​the first liquid phase pipe section 421 can also be increased by increasing the pipe diameter of the first liquid phase pipe section 421.

[0075] Combination Figure 2 and Figure 3, the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42 may both include an inner shell section and an outer shell section, wherein the outer shell section may include an inlet section and an outlet section, the inlet section having a working medium inlet 44, and the outlet section having a working medium outlet 45. In the embodiment of the present invention, the inlet section and the outlet section may be located on both sides of the axial direction of the shell 1, respectively. The inner shell section of the gas-phase heat exchange branch 41 may include a first gas-phase pipe section 411, a second gas-phase pipe section 412, and a third gas-phase pipe section 413, the third gas-phase pipe section 413 being located in the discharge chamber 111 and used for heating the gas-phase working medium in the discharge chamber 111, the second gas-phase pipe section 412 being located in the second chamber 112b, and the first gas-phase pipe section 411 being located in the first chamber 112a. The inner shell section of the liquid-phase heat exchange branch 42 may include a third liquid-phase pipe section 423, and the third liquid-phase pipe section 423 may be located in the discharge chamber 111. That is to say, in the embodiment of the present invention, the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42 are arranged in the first chamber 112a, the second chamber 112b and the exhaust chamber 111, and the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42 will penetrate the shell 1 axially.

[0076] In fact, the liquid phase working medium discharged from the outlet 22 and the first separation hole 211 may also contain a certain amount of gas phase working medium.

[0077] In view of this, in the embodiment of the present invention, the outlet 22 of the introduction pipe 2 and the first separation hole 211 can also be set to face the inner wall surface of the working chamber 112. In this way, the liquid phase working medium discharged from the outlet 22 and the first separation hole 211 can directly collide with the inner wall surface of the working chamber 112. In the process of the collision between the liquid phase working medium and the inner wall surface, the separation of the gas phase working medium and the liquid phase working medium can also be achieved, which is conducive to improving the effect of gas-liquid separation.

[0078] It should be understood that the inner wall surface of the outlet 22 and the first separation hole 211 facing the working chamber 112 does not include the inner wall surface covered by the liquid phase working medium in the working chamber 112, that is, the liquid phase working medium discharged from the outlet 22 and the first separation hole 211 will not collide with the liquid surface of the liquid storage area at the bottom of the working chamber 112, so as to ensure that the gas-liquid separation in the aforementioned collision process can occur.

[0079] It should be noted that the above description of the arrangement positions of the outlet 22 and the first separation hole 211 is only an exemplary description of the embodiment of the present invention, and cannot be used as a limitation on the scope of implementation of the gas-liquid separator provided by the present invention. In practical applications, those skilled in the art can arrange the first separation hole 211 and the outlet 22 in combination with other requirements. For example, the first separation hole 211 can be designed in combination with the height of the liquid storage area in the first chamber 112a. It should be clear that the liquid storage area in the first chamber 112 should not cover the first separation hole 211, and the height of the liquid storage area is related to the dryness of the two-phase working medium. For details, please refer to the following description.

[0080] For a certain R134a gas-liquid separator, the dryness of the two-phase working fluid at the inlet of the inlet pipe 2 (hereinafter referred to as the inlet dryness) is often between 0.5 and 0.9. Here, the reference dryness x b , the recommended value is 0.7, the reference height h of the liquid storage area in the first chamber 112a b It is 1 / 3 of the inner diameter D of the shell 1. When targeting different inlet dryness of the gas-liquid separator, the height h of the liquid storage area can be determined, thereby ensuring that the first separation hole 211 is higher than the height h of the liquid storage area. Figure 5 The specific design process may include the following steps S1 to S3.

[0081] Step S1, according to the inner diameter D of the gas-liquid separator and the reference height h b (Here is recommended h b =1 / 3·D), obtain the reference dryness x b The reference arc angle α between the two ends of the liquid surface in the liquid storage area of ​​the first chamber 112a and the center point of the gas-liquid separator b Specifically, It is deduced that

[0082] Step S2: According to the actual inlet dryness x and the reference dryness x b (x b =0.7), the actual arc angle α between the two ends of the liquid surface in the liquid storage area in the first chamber 112a and the center point of the gas-liquid separator is calculated by the formula. Specifically, can be The actual arc angle α is derived. Where V is the actual volume of the liquid storage area of ​​the first chamber 112a, V b is the reference volume of the liquid storage area of ​​the first chamber 112a.

[0083] It should be noted that, the lower the inlet dryness is, the larger the volume of the liquid storage area in the first cavity 112a is, and the higher the height is.

[0084] Step S3, according to the actual arc angle α, the actual height h of the liquid storage area in the first chamber 112a under the actual inlet dryness condition can be determined. Specifically, it can be obtained by It is deduced that In addition, it should be noted that h should not be greater than

[0085] like Figure 1-Figure 5 As shown, the gas-liquid separator provided in the embodiment of the present invention can be specifically a horizontal separator. Of course, the gas-liquid separator can also be used as a vertical separator by adjusting the axial direction of the gas-liquid separator. For example, the gas-liquid separator can be rotated to use the first end cover 13 as the bottom cover and the second end cover 14 as the top cover. This is also feasible.

[0086] In some optional implementations, at least part of the tube wall of the centrifugal tube section 21 may also be provided with a second separation hole 212, which is used to allow at least part of the gas phase of the two-phase working fluid to overflow, thereby increasing the separation effect of the two-phase working fluid in the centrifugal tube section 21.

[0087] Specifically, the first separation hole 211 can be set on the outside of the centrifugal tube section 21, so that under the action of centrifugal force, the liquid phase of the two-phase working medium in the centrifugal tube section 21 can be better thrown out; and the second separation hole 212 can be located on the inside of the centrifugal tube section 21, that is, the side where the gas phase working medium with relatively small density in the two-phase working medium is located, which is more conducive to the escape of the gas phase working medium.

[0088] The second separation hole 212 may be located in the first chamber 112a, and / or, the second separation hole 212 may also be located in the second chamber 112b. Specifically in the embodiment of the present invention, it is preferred to adopt a solution in which the second separation hole 212 is located in the second chamber 112b, so that the amount of the gas-phase working medium in the first chamber 112a can be reduced, thereby reducing the discharge resistance of the gas-phase working medium.

[0089] Embodiment 2

[0090] Please refer to Figure 6 and Figure 7 , Figure 6 This is a schematic structural diagram of a second implementation of the gas-liquid separator provided by the present invention. Figure 7 for Figure 6 Schematic diagram of the structure of the introduction pipe.

[0091] like Figure 6 and Figure 7As shown, an embodiment of the present invention further provides another gas-liquid separator, which is basically the same as the gas-liquid separator involved in the aforementioned embodiment one. The following embodiment of the present invention only describes the differences between the two. For other unexplained parts, reference can be made to the aforementioned embodiment one, and no repeated description will be made here.

[0092] In the embodiment of the present invention, the centrifugal tube section 21 can be a spiral tube section, which can extend along the axial direction of the shell 1, and in the flow direction of the two-phase working medium, the curvature of the spiral central axis of the spiral tube section (i.e., the spiral central axis) can gradually increase. In this way, when the two-phase working medium flows in the centrifugal tube section 21, its centrifugal force will be continuously strengthened, the effect of gas-liquid separation can be improved, the total length of the centrifugal tube section 21 can be reduced, the structure of the gas-liquid separator provided by the present invention can be simplified, and it is beneficial to reduce the cost of the gas-liquid separator.

[0093] Embodiment 3

[0094] Please refer to Figure 8-Figure 13 , Figure 8 This is a schematic structural diagram of a third implementation of the gas-liquid separator provided by the present invention. Fig. 9 for Figure 8 Schematic diagram of the structure after hiding the first end cover, Fig.10 for Fig. 9 Schematic diagram of the structure after hiding the first peripheral wall portion, Fig.11 for Fig. 9 Schematic diagram of the structure after hiding all the peripheral walls. Fig.12 for Fig.11 A schematic diagram of the structure from another perspective. Fig.13 for Fig.12 Schematic diagram of the structure of the heat exchange pipeline.

[0095] like Figure 8-Figure 13 As shown, an embodiment of the present invention further provides another gas-liquid separator, which is basically consistent with the principle of the gas-liquid separator involved in the aforementioned embodiment one and embodiment two. The following mainly describes the differences therebetween. For other unexplained parts, reference can be made to the aforementioned embodiment one or embodiment two, and no repeated description will be made here.

[0096] In the embodiment of the present invention, the gas-liquid separator is a vertical separator, and the first chamber 112a, the second chamber 112b and the discharge chamber 111 may be arranged in the circumferential direction of the gas-liquid separator.

[0097] Combination Figure 8-Figure 11In the embodiment of the present invention, the first end cover 13 is the top cover of the gas-liquid separator, and the second end cover 14 is the bottom cover of the gas-liquid separator. The partition component 3 may include a first partition 31, a second partition 32 and a third partition 33. The first partition 31, the second partition 32 and the third partition 33 are arranged along the diameter direction of the gas-liquid separator. A discharge chamber 111 is formed between the first partition 31 and the third partition 33. A first chamber 112a is formed between the third partition 33 and the second partition 32. A second chamber 112b is formed between the second partition 32 and the first partition 31. The first partition 31 is provided with a first connecting port 311, and the second partition 32 is provided with a second connecting port 321. The gas phase working medium in the first chamber 112a can enter the second chamber 112b through the second connecting port 321, and the gas phase working medium in the second chamber 112b can enter the discharge chamber 111 through the first connecting port 311.

[0098] The partition component 3 is also used to separate the liquid storage chamber 112c in the working chamber 112. The liquid storage chamber 112c can be located on one axial side of the inner chamber 11. The liquid phase working medium in the first chamber 112a and the second chamber 112b can enter the liquid storage chamber 112c. Accordingly, the liquid phase heat exchange branch 42 can be located only in the liquid storage chamber 112c to heat the liquid phase working medium in the liquid storage chamber 112c. In this way, the liquid phase heat exchange branch 42 only needs to be arranged in the liquid storage chamber 112c, and does not need to pass through the first chamber 112a, the second chamber 112b and the discharge chamber 111 at the same time as in the first and second embodiments. The structure of the liquid phase heat exchange branch 42 can be relatively simple. It should be understood that, among the first chamber 112a and the second chamber 112b, only the first chamber 112a and the liquid storage chamber 112c may be connected, so that a small amount of liquid phase working fluid may remain in the second chamber 112b to serve as a buffer.

[0099] Similarly, since the exhaust chamber 111, the first chamber 112a and the second chamber 112b are arranged in the circumferential direction, the gas-phase heat exchange branch 41 only needs to be arranged in the exhaust chamber 111 without passing through the first chamber 112a and the second chamber 112b. The structural form of the gas-phase heat exchange branch 41 can also be relatively simple.

[0100] That is to say, compared with a horizontal separator, in the vertical separator provided in the embodiment of the present invention, the structure of the heat exchange pipeline 4 can be relatively simple and can be easily arranged.

[0101] In detail, Figure 10-12As shown, the partition component 3 may also include a fourth partition 34, which may be arranged perpendicular to the axial direction of the gas-liquid separator, a first region is formed between the fourth partition 34 and the second end cover 14, and a second region is formed between the fourth partition 34 and the first end cover 13; the first region may form the above-mentioned liquid storage chamber 112c, the first chamber 112a, the second chamber 112b and the discharge chamber 111 may all be located in the second region, and may be arranged along the circumference of the second region; the first chamber 112a and the second chamber 112b may be collectively referred to as a separation chamber, and the fourth partition 34 is equivalent to dividing the working chamber 112 into a separation chamber and a liquid storage chamber 112c. The fourth partition 34 may be provided with a third connecting port 341, and the liquid phase working medium in the first chamber 112a and the second chamber 112b may enter the liquid storage chamber 112c through the third connecting port 341. It should be understood that in the solution where only the first chamber 112a and the liquid storage chamber 112c are connected, the plate portion of the fourth partition 34 used to separate the second chamber 112b and the liquid storage chamber 112c does not need to be provided with the third communication port 341. Fig.10 and Fig.11 .

[0102] Based on the arrangement of the fourth partition plate 34, the peripheral wall 15 can be divided into a first peripheral wall portion 151 and a second peripheral wall portion 152; it should be understood that this division is only for the convenience of description, and does not necessarily mean that the peripheral wall 15 is to be arranged as a split structure. The aforementioned liquid storage chamber 112c can be specifically formed between the second peripheral wall portion 152, the fourth partition plate 34 and the second end cover 14.

[0103] In an embodiment of the present invention, the fourth partition plate 34 and the liquid storage chamber 112c may not exist, that is, the inner cavity 11 of the shell 1 may still only include the first chamber 112a, the second chamber 112b and the discharge chamber 111. At this time, the liquid-phase heat exchange branch 42 can be arranged in the first chamber 112a and the second chamber 112b, and the gas-phase heat exchange branch 41 still only needs to be arranged in the discharge chamber 111. The structural form of the heat exchange pipeline 4 is still relatively simple.

[0104] Embodiment 4

[0105] Please refer to Figure 14-17 , Fig.14 This is a schematic structural diagram of a fourth implementation of the gas-liquid separator provided by the present invention. Fig.15 for Fig.14 Schematic diagram of the structure after hiding the outer wall. Fig.16 for Fig.15 A schematic diagram of the structure after hiding the first end cover, the second end cover and the first partition, Fig.17 for Fig.14 Schematic diagram of the structure of the heat exchange pipeline.

[0106] like Figure 14-17 As shown, an embodiment of the present invention further provides another gas-liquid separator, which is basically consistent with the principle of the gas-liquid separator involved in the aforementioned embodiment one and embodiment two. The following mainly describes the differences therebetween. For other unexplained parts, reference can be made to the aforementioned embodiment one or embodiment two, and no repeated description will be made here.

[0107] In an embodiment of the present invention, the gas-liquid separator is a horizontal separator, which may be provided with a driving component (not shown in the figure), which may be connected to the second partition plate 32 to drive the second partition plate 32 to move along the inlet pipe 2, thereby adjusting the volumes of the first chamber 112a and the second chamber 112b to better adapt to different working conditions.

[0108] When the temperature in the first chamber 112a is high (e.g., greater than the evaporation temperature of the liquid phase medium), it indicates that the heat exchange is too sufficient, the gas phase medium in the two-phase medium introduced by the inlet pipe 2 is relatively large, and the amount of liquid phase medium in the first chamber 112a is relatively small. At this time, the driving component can drive the second partition plate 32 to move toward the first end cover 13 to reduce the volume of the first chamber 112a, so that more first separation holes 211 and second separation holes 212 can be located in the second chamber 112b. In this way, a larger number of gas phase medium in the two-phase medium can flow directly from the first separation hole 211, the second separation hole 212 and the outlet 22 to the second chamber 112b, rather than first flowing into the first chamber 112a and then flowing out to the second chamber 112b through the second connecting port 321, which can effectively reduce the flow resistance of the gas phase medium.

[0109] On the contrary, when the temperature in the first chamber 112a is low, it indicates that the heat exchange is insufficient, the liquid phase working medium in the two-phase working medium introduced by the introduction pipe 2 is relatively large, and the amount of liquid phase working medium in the first chamber 112a is relatively large. At this time, the driving component can drive the second partition plate 32 to move away from the first end cover 13 to increase the volume of the first chamber 112a, so that more first separation holes 211 can be located in the first chamber 112a, so that a larger amount of liquid phase working medium in the two-phase working medium can enter the first chamber 112a.

[0110] Here, the embodiment of the present invention does not limit the specific structural form of the driving component. In practical applications, those skilled in the art can configure it according to specific needs as long as it can meet the requirements of use.

[0111] In some implementations, the driving component can be a temperature-controlled deformation spring, which can be mounted on the introduction tube 2 in an outer sleeve. One end of the temperature-controlled deformation spring can be fixed, for example, it can be fixed to the outer wall 15, and the other end of the temperature-controlled deformation spring can be connected to the second partition 32.

[0112] The temperature control deformation spring can be made of shape memory metal, such as nickel titanium alloy, etc. In this way, when the temperature is high, the second partition plate 32 can be moved or rotated to reduce the volume of the first chamber 112a, so that the gas phase working medium introduced into the pipe 2 can quickly enter the second chamber 112b, which can reduce the flow resistance, that is, reduce the gas pressure drop of the gas-liquid separator, so that the gas-liquid separator works more efficiently and achieves energy saving; when the temperature is low, the temperature control deformation spring can move and rotate the second partition plate 32 to increase the volume of the first chamber 112a, so that most of the liquid phase working medium can enter the first chamber 112a, avoiding the second chamber 112b having more liquid phase working medium and liquid hammer under special circumstances, thereby protecting the compressor.

[0113] It should be understood that, driven by the temperature-controlled spring, the displacement of the second partition 32 includes rotational displacement + axial displacement. In order to avoid interference of the introduction tube 2 with the displacement of the second partition 32, in an embodiment of the present invention, the second partition 32 can be assembled on the centrifugal tube section 21, and the centrifugal tube section 21 can be a spiral tube section with a constant spiral diameter.

[0114] In other implementations, the driving component may also include a rotating driving member and a transmission member. The rotating driving member may be a motor, etc., which may be arranged on the outside of the housing 1 to avoid occupying the internal space of the housing 1. The transmission member may be a screw mechanism, including a screw rod and a screw nut. The screw rod may rotate under the drive of the motor, the screw nut may be assembled on the screw rod in a sleeve, and the screw nut may be connected to the second partition 32. In this way, when the motor is started, the screw nut may perform rotational displacement and axial displacement along the screw rod, thereby driving the second partition 32 to perform rotational displacement and axial displacement.

[0115] Similar to the description in Example 1, in the horizontal separator, the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42 need to be located in the first chamber 112a and the second chamber 112b. In order to avoid the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42 interfering with the movement of the second partition 32, the embodiment of the present invention can also modify the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42.

[0116] In detail, the gas-phase heat exchange branch 41 and the liquid-phase heat exchange branch 42 may include a first pipe segment, a second pipe segment and a transition pipe segment, the first pipe segment may be located in the first chamber 112a, the second pipe segment may be located in the second chamber 112b, and the transition pipe segment may be located outside the shell 1 and used to connect the first pipe segment and the second pipe segment. In this way, the second partition plate 32 can be displaced between the first pipe segment and the second pipe segment.

[0117] For ease of description, the first pipe section, the second pipe section and the transition pipe section of the gas-phase heat exchange branch 41 can be respectively referred to as the first gas-phase pipe section 411, the second gas-phase pipe section 412 and the gas-phase transition pipe section 414, and the gas-phase transition pipe section 414 can be located on the outside of the shell 1, and is used to connect the first gas-phase pipe section 411 and the second gas-phase pipe section 412; at the same time, the first pipe section, the second pipe section and the transition pipe section of the liquid-phase heat exchange branch 42 can be respectively referred to as the first liquid-phase pipe section 421, the second liquid-phase pipe section 422 and the liquid-phase transition pipe section 424, and the liquid-phase transition pipe section 424 can also be located on the outside of the shell 1, and is used to connect the first liquid-phase pipe section 421 and the second liquid-phase pipe section 422.

[0118] Furthermore, a limit plate 342 may be provided on the inner wall surface of the outer peripheral wall 15, and the limit plate 342 is used to abut against the second partition plate 32 in the axial direction, thereby limiting the axial movement limit position of the second partition plate 32. There may be two limit plates 342, and the two limit plates 342 may be arranged at intervals on the inner wall surface of the outer peripheral wall 15. The specific structural form of the limit plate 342 is not limited here.

[0119] Embodiment 5

[0120] Please refer to Figure 18-Figure 20 , Fig.18 This is a schematic structural diagram of a fifth implementation of the gas-liquid separator provided by the present invention. Fig.19 for Fig.18 A schematic diagram of the structure after hiding the first end cover and the first peripheral wall portion, Fig. 20 for Fig.19 Schematic diagram of the structure after hiding the first partition, the second partition and the third partition.

[0121] like Figure 18-Figure 20 As shown, an embodiment of the present invention further provides another gas-liquid separator, which is basically consistent with the principle of the gas-liquid separator involved in the aforementioned embodiment three. The following mainly describes the differences therebetween. For other unexplained parts, reference can be made to the aforementioned embodiment three, and no repeated description will be made here.

[0122] In an embodiment of the present invention, the gas-liquid separator is a vertical separator, which may also be configured with a driving component (not shown in the figure), which can be connected to the second partition 32 to drive the second partition 32 to move along the inlet pipe 2, so as to adjust the volume of the first chamber 112a and the second chamber 112b to better adapt to different working conditions.

[0123] The above-mentioned driving component can still adopt the temperature-controlled deformation spring involved in the fourth embodiment. Alternatively, the above-mentioned driving component can also directly adopt a rotating driving member in the form of a motor, etc. The rotating driving member can be directly or indirectly connected to the second partition 32 to control the second partition 32 to rotate in the housing 1, so as to adjust the volume of the first chamber 112a and the second chamber 112b.

[0124] In order to prevent the introduction pipe 2 itself from interfering with the displacement of the second partition plate 32 , in the embodiment of the present invention, the introduction pipe 2 may be modified.

[0125] In detail, the inner wall surface of the shell 1 can be a cylindrical surface, the centrifugal tube section 21 can be an arc-shaped tube section, the plane where the arc-shaped central axis of the arc-shaped tube section (i.e., the arc-shaped central axis) is located and the axial direction of the gas-liquid separator can be perpendicular, the center of the circle where the arc-shaped central axis of the arc-shaped tube section is located can be located on the central axis of the shell 1, and the second partition 32 can be plugged and assembled on the arc-shaped tube section. In this way, when the second partition 32 is displaced along the arc-shaped tube section, no interference will occur between the second partition 32 and the arc-shaped tube section.

[0126] Furthermore, a limiting mechanism may be disposed in the housing 1 to limit the rotational limit position of the second partition plate 32 .

[0127] Here, the embodiments of the present invention do not limit the specific structural form and installation position of the above-mentioned limit mechanism. In practical applications, those skilled in the art can configure it according to specific needs as long as it can meet the requirements of use. Fig. 20 As shown, the limiting mechanism may include two limiting plates 342 , and both limiting plates 342 may be installed on the fourth partition plate 34 and may be arranged at intervals along the circumferential direction.

[0128] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A gas-liquid separator, It is characterized in that include: A housing, wherein the housing has an inner cavity and is further provided with a discharge portion; an introduction pipe, installed on the shell, and used for introducing a two-phase working medium into the inner cavity, wherein the two-phase working medium includes a gas phase working medium and a liquid phase working medium, wherein at least a part of the portion of the introduction pipe located in the inner cavity is a centrifugal tube section, wherein at least a part of the centrifugal tube section is curved so that centrifugal force is generated when the two-phase working medium in the centrifugal tube section flows along the centrifugal tube section, and a first separation hole is provided on at least a part of the tube wall of the centrifugal tube section, and at least a part of the liquid phase working medium can enter the inner cavity through the first separation hole; A partition component is arranged in the shell and is used to separate the inner cavity into a first chamber, a second chamber and a working chamber. The part of the centrifugal tube segment provided with the first separation hole is located in the first chamber, or in the first chamber and the second chamber. The outlet of the introduction pipe is located in the second chamber. The partition component is provided with a first connecting port and a second connecting port. The gaseous working medium in the first chamber can enter the second chamber through the second connecting port, and the gaseous working medium in the second chamber can enter the discharge chamber through the first connecting port. The discharge chamber and the discharge part are connected.

2. The gas-liquid separator according to claim 1, It is characterized in that Also included is a heat exchange pipeline, the heat exchange pipeline comprising: A gas-phase heat exchange branch, the gas-phase heat exchange branch is at least located in the discharge chamber and is used to heat the gas-phase working medium in the discharge chamber; A liquid phase heat exchange branch, the liquid phase heat exchange branch is at least located in the working chamber, and is used to heat the liquid phase working medium in the working chamber.

3. The gas-liquid separator according to claim 2, It is characterized in that The inner cavity also includes a liquid storage chamber, at least the first chamber and the second chamber are connected to each other, the liquid phase working medium in the first chamber can enter the liquid storage chamber, and the liquid phase heat exchange branch is located in the liquid storage chamber, which is used to heat the liquid phase working medium in the liquid storage chamber.

4. The gas-liquid separator according to claim 2, It is characterized in that The liquid phase heat exchange branch includes a first liquid phase pipe section and a second liquid phase pipe section which are connected to each other. The first liquid phase pipe section is located in the first chamber, and the second liquid phase pipe section is located in the second chamber. The heat exchange area of ​​the first liquid phase pipe section is larger than that of the second liquid phase pipe section.

5. The gas-liquid separator according to any one of claims 1 to 4, It is characterized in that The centrifugal tube section is a spiral tube section, and the spiral tube section extends along the axial direction of the shell.

6. The gas-liquid separator according to claim 5, It is characterized in that Along the flow direction of the two-phase working medium, the curvature of the spiral center axis of the spiral pipe section gradually increases.

7. The gas-liquid separator according to any one of claims 1 to 4, It is characterized in that The partition member includes a second partition plate, the second partition plate is used to separate the first chamber and the second chamber, and the second partition plate is installed outside the introduction pipe; It also includes a driving component, which is directly or indirectly connected to the second partition plate and is used to drive the second partition plate to move along the introduction pipe.

8. The gas-liquid separator according to claim 7, It is characterized in that The gas-liquid separator is a horizontal separator, and the first chamber, the second chamber and the discharge chamber are arranged in sequence along the axial direction of the gas-liquid separator; The gas-phase heat exchange branch and the liquid-phase heat exchange branch both include a first pipe segment, a second pipe segment and a transition pipe segment. The first pipe segment is located in the first chamber, the second pipe segment is located in the second chamber, the transition pipe segment is located outside the shell and is used to connect the first pipe segment and the second pipe segment. The second partition can be displaced between the first pipe segment and the second pipe segment.

9. The gas-liquid separator according to claim 7, It is characterized in that The gas-liquid separator is a vertical separator, and the first chamber, the second chamber and the discharge chamber are arranged along the circumference of the gas-liquid separator; The inner wall surface of the shell is a cylindrical surface, the centrifugal tube section is an arc-shaped tube section, the plane where the arc-shaped central axis of the arc-shaped tube section is located is perpendicular to the axial direction of the gas-liquid separator, and the center of the circle where the arc-shaped central axis of the arc-shaped tube section is located is located on the central axis of the shell, and the second partition is plugged and assembled on the arc-shaped tube section.

10. The gas-liquid separator according to any one of claims 1 to 4, It is characterized in that At least a portion of the tube wall of the centrifugal tube section is provided with a second separation hole, and at least a portion of the gas-phase working medium can enter the first chamber and / or the second chamber through the second separation hole.

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