Gas-liquid separator

Abstract

Provided in the present application is a gas-liquid separator, comprising: a body part, having a gas-liquid separation cavity; a mixture inlet pipe communicating with the gas-liquid separation cavity; a gas outlet pipe, comprising a first section, a second section and a third section which communicate with each other, the first section and the third section being both located above the second section, the first section, the second section and at least part of the third section being located in the gas-liquid separation cavity, the top end of the first section being provided with a gas inlet, the end of the third section away from the second section forming a gas outlet, the gas outlet being communicated with the outside of the gas-liquid separation cavity, and the first section, the second section and the third section forming an enclosed space; and a heat exchange part, comprising a middle heat exchange section and a peripheral heat exchange section which are located in the gas-liquid separation cavity, the middle heat exchange section passing through the enclosed space, and the peripheral heat exchange section being located on the outer side of the enclosed space and being close to a side wall of the gas-liquid separation cavity. The present solution can solve the problem of low heat exchange efficiency caused by a heat exchange pipe being coiled around the outer periphery of the gas outlet pipe and failing to effectively and uniformly heat a refrigerant in a cylinder body of the gas-liquid separator.

Description

gas-liquid separator

[0001] This application claims priority to the patent application filed on October 17, 2024, with application number 202422520224.7 and entitled "Gas-Liquid Separator" with the China National Intellectual Property Administration. Technical Field

[0002] This application relates to the field of gas-liquid separators, and more specifically, to a gas-liquid separator. Background Technology

[0003] In air conditioning systems and heat pump units, the gas-liquid separator is a key component. Its main function is to separate and store liquid refrigerant and compressor lubricating oil, ensuring the normal operation of the compressor and the efficient operation of the system. In low-temperature environments, the viscosity of liquid refrigerant and lubricating oil increases, their fluidity decreases, and they may even freeze. This can lead to a lack of necessary lubrication and refrigerant when the compressor starts up, increasing wear and tear on the compressor and the entire air conditioning system.

[0004] Currently, the heat exchange function in gas-liquid separators is mainly achieved through built-in heat exchange tubes. These tubes utilize the heat generated by the compressor's coolant circulation to heat the refrigerant and lubricating oil in a refrigerated state. Typically, the heat exchange tubes consist of a spiral tube located inside the gas-liquid separator and near its bottom, usually coiled around the outer circumference of the separator's outlet pipe. However, this arrangement cannot effectively and uniformly heat the refrigerant within the gas-liquid separator's cylinder, resulting in low heat exchange efficiency. Summary of the Invention

[0005] This application provides a gas-liquid separator to solve the problem of low heat exchange efficiency caused by the spiral tube inside the cylinder of the gas-liquid separator coiled around the outer periphery of the outlet pipe.

[0006] This application provides a gas-liquid separator, comprising: a body having a gas-liquid separation chamber; a mixture inlet pipe communicating with the gas-liquid separation chamber; an outlet pipe including a first section, a second section, and a third section communicating with each other, the first section and the third section being located above the second section, the first section, the second section, and at least a portion of the third section being located within the gas-liquid separation chamber, the top of the first section having an air inlet, the end of the third section away from the second section forming an air outlet communicating with the outside of the gas-liquid separation chamber, the bottom of the outlet pipe having an oil return port communicating with the gas-liquid separation chamber, the first section, the second section, and the third section forming an enclosing space, the cross-sectional area of ​​the top of the enclosing space being smaller than the cross-sectional area of ​​the bottom of the enclosing space along the axial direction of the body; and a heat exchange section including a central heat exchange section and a peripheral heat exchange section located within the gas-liquid separation chamber, the central heat exchange section passing through the enclosing space, and the peripheral heat exchange section located outside the enclosing space and close to the side wall of the gas-liquid separation chamber.

[0007] Furthermore, the two ends of the central heat exchange section in the horizontal direction are located on both sides of the enclosed space, and two peripheral heat exchange sections are provided, which are respectively connected to the two ends of the central heat exchange section in the horizontal direction.

[0008] Furthermore, the central heat exchange section includes: a first connecting section, which extends through the enclosed space, with both ends of the first connecting section located on both sides of the enclosed space; the first connecting section includes a first arc-shaped section or a first bend section; two vertical sections, both extending along the axial direction of the gas-liquid separator, which are respectively connected to the two ends of the first connecting section; and two second connecting sections, which are correspondingly arranged with the vertical sections, with one end of the second connecting section connected to the vertical section and the other end of the second connecting section connected to the corresponding peripheral heat exchange section; the second connecting section includes a second arc-shaped section or a second bend section.

[0009] Furthermore, in a plane perpendicular to the axis of the gas-liquid separator, the projections of the two second connecting segments are located on both sides of the projection of the first connecting segment, and the angle between the projection of each second connecting segment and the projection of the first connecting segment is an acute angle, and the projection of the second segment intersects with the projection of the first connecting segment.

[0010] Furthermore, the first connecting section is connected to the top of the vertical section, and the second connecting section is connected to the bottom of the vertical section; the peripheral heat exchange section extends from the bottom to the top of the gas-liquid separation chamber.

[0011] Furthermore, the third section includes a first vertical pipe section, a transition pipe section, and a second vertical pipe section connected in sequence. The first vertical pipe section is connected to the second section, and the second vertical pipe section is connected to the air outlet. Along the direction from the first vertical pipe section to the second vertical pipe section, the distance between the transition pipe section and the first section gradually decreases, and the distance between the second vertical pipe section and the first section is smaller than the distance between the first vertical pipe section and the first section.

[0012] Furthermore, the main body is provided with a first mounting port, and the mixture inlet pipe is connected to the gas-liquid separation chamber through the first mounting port. The gas-liquid separator also includes: a gas guide section, which is disposed in the gas-liquid separation chamber. The gas guide section has a gas guide cavity, the top of which is connected to the first mounting port. The side of the gas guide cavity has a mixture outlet, which is away from the gas inlet. The height of the gas inlet is higher than the minimum height of the mixture outlet.

[0013] Furthermore, the gas-liquid separator includes a mixture feed section, one end of which is located inside and communicates with the gas-liquid separation chamber, and the other end of which is located outside the main body and forms a mixture inlet pipe. The two ends of the mixture feed section are connected to each other, and a mixture outlet is provided at the end of the mixture feed section located in the gas-liquid separation chamber. The gas-liquid separator also includes a baffle section, which is located inside the gas-liquid separation chamber, and the mixture outlet and the air inlet are located on both sides of the baffle section, respectively.

[0014] Furthermore, a positioning part is provided at the bottom of the gas-liquid separation chamber, and the positioning part is positioned and cooperates with the gas outlet pipe; the positioning part includes a positioning plate, which is set at the bottom of the gas-liquid separation chamber, and there is an installation space between the positioning plate and the bottom wall of the gas-liquid separation chamber. The positioning plate is provided with a positioning hole, which is set through the positioning plate. At least a part of the second section is embedded in the installation space through the positioning hole, and the positioning hole is positioned and cooperates with the second section.

[0015] Furthermore, the oil return port is located on the second section and within the installation space. The gas-liquid separator also includes a filter section, which is located at the oil return port.

[0016] Furthermore, the gas-liquid separator also includes: a mounting part, which is disposed on the outer surface of the bottom of the main body, and the center line of the mounting part, the central axis of the main body, and the axis of the gas outlet coincide.

[0017] By applying the technical solution of this application, under low-temperature operating conditions, the cooperation between the central heat exchange section and the peripheral heat exchange section can improve the heat exchange effect on the refrigerant and lubricating oil in the gas-liquid separation chamber, enhance the fluidity of the refrigerant and lubricating oil, and ensure the normal operation of the system. Specifically, the central heat exchange section mainly heats the refrigerant and lubricating oil in the middle of the gas-liquid separation chamber, while the peripheral heat exchange section mainly heats the refrigerant and lubricating oil in the outer part of the gas-liquid separation chamber. This arrangement ensures that the heat from the heat exchange section is effectively transferred to the middle and outer parts of the gas-liquid separation chamber, covering a wide range. Under low-temperature operating conditions, it can simultaneously and efficiently thaw or preheat the lubricating oil and refrigerant in the middle and outer parts of the gas-liquid separation chamber, improving heat exchange efficiency, enhancing the uniformity and consistency of temperature rise in various parts of the gas-liquid separation chamber, avoiding local overheating or incomplete thawing, and ensuring the stability and safety of the system during low-temperature startup. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 shows a schematic diagram of the gas-liquid separator provided in an embodiment of this application;

[0020] Figure 2 shows a partial structural cross-sectional view of the gas-liquid separator provided in an embodiment of this application;

[0021] Figure 3 shows a first-view structural schematic diagram of the cooperation between the air outlet pipe and the heat exchange section provided in the embodiment of this application;

[0022] Figure 4 shows a second-view structural schematic diagram of the cooperation between the air outlet pipe and the heat exchange section provided in the embodiment of this application;

[0023] Figure 5 shows a schematic diagram of the heat exchange section provided in an embodiment of this application;

[0024] Figure 6 shows a bottom view of the heat exchange section provided in an embodiment of this application;

[0025] Figure 7 shows a bottom view of the heat exchange section and the exhaust pipe provided in an embodiment of this application;

[0026] Figure 8 shows a schematic diagram of the structure of the air outlet pipe and the positioning part provided in the embodiment of this application;

[0027] Figure 9 shows a partial structural schematic diagram of the gas-liquid separator provided in an embodiment of this application;

[0028] Figure 10 shows an exploded structural diagram of the positioning part and the bottom cover provided in an embodiment of this application.

[0029] The above-mentioned drawings include the following reference numerals: 10, main body; 101, gas-liquid separation chamber; 1001, first mounting port; 1002, second mounting port; 1003, third mounting port; 11, shell; 12, top cover; 121, connecting pipe; 13, bottom cover; 20, mixture inlet pipe; 30, exhaust pipe; 3001, enclosing space; 31, first section; 3101, air inlet; 32, second section; 3201, oil return port; 33, third section; 3301, air outlet; 331, first vertical pipe section; 332, transition pipe section; 333, second vertical pipe section; 40, heat exchange section; 41, middle heat exchange section; 411, first connecting section; 412, vertical section; 413, second connecting section; 42, peripheral heat exchange section; 50. Air guide section; 501. Air guide chamber; 502. Mixture outlet; 60. Baffle section; 70. Positioning section; 71. Positioning plate; 7101. Positioning hole; 72. Annular plate; 80. Filter section; 90. Mounting section. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] As shown in Figures 1 to 8, this application provides a gas-liquid separator, which includes a body 10, a mixture inlet pipe 20, an outlet pipe 30, and a heat exchange section 40. The body 10 has a gas-liquid separation chamber 101; the mixture inlet pipe 20 communicates with the gas-liquid separation chamber 101; the outlet pipe 30 includes a first section 31, a second section 32, and a third section 33 that communicate with each other. The first section 31 and the third section 33 are both located above the second section 32. The first section 31, the second section 32, and at least a portion of the third section 33 are located within the gas-liquid separation chamber 101. The top end of the first section 31 has an inlet 3101, and the end of the third section 33 furthest from the second section 32 forms an outlet 3301, which communicates with the outside of the gas-liquid separation chamber 101. The bottom of the vent pipe 30 is provided with an oil return port 3201 that communicates with the gas-liquid separation chamber 101. The first section 31, the second section 32 and the third section 33 form an enclosing space 3001. Along the axial direction of the main body 10, the cross-sectional area of ​​the top end of the enclosing space 3001 is smaller than the cross-sectional area of ​​the bottom end of the enclosing space. The heat exchange section 40 includes a middle heat exchange section 41 and an outer heat exchange section 42 located in the gas-liquid separation chamber 101. The middle heat exchange section 41 passes through the enclosing space 3001, and the outer heat exchange section 42 is located outside the enclosing space 3001 and close to the side wall of the gas-liquid separation chamber 101.

[0032] By applying the technical solution of this application, under low-temperature operating conditions, the cooperation between the central heat exchange section 41 and the peripheral heat exchange section 42 can improve the heat exchange effect on the refrigerant and lubricating oil in the gas-liquid separation chamber 101, enhance the fluidity of the refrigerant and lubricating oil, and ensure the normal operation of the system. Specifically, the central heat exchange section 41 mainly heats the refrigerant and lubricating oil in the middle of the gas-liquid separation chamber 101, while the peripheral heat exchange section 42 mainly heats the refrigerant and lubricating oil in the peripheral part of the gas-liquid separation chamber 101. This arrangement ensures that the heat from the heat exchange section 40 is effectively transferred to the middle and peripheral parts of the gas-liquid separation chamber 101, covering a wide range. Under low-temperature operating conditions, it can simultaneously and efficiently thaw or preheat the lubricating oil and refrigerant in the middle and peripheral parts of the gas-liquid separation chamber 101, improving heat exchange efficiency, enhancing the uniformity and consistency of temperature rise in various parts of the gas-liquid separation chamber 101, avoiding local overheating or incomplete thawing, and ensuring the stability and safety of the system during low-temperature startup. Furthermore, along the axial direction of the main body 10, the cross-sectional area of ​​the bottom end of the enclosing space 3001 is larger than the cross-sectional area of ​​the top end. The middle heat exchange section 41 and the outer heat exchange section 42 of the heat exchange section 40 are arranged close to the bottom end of the enclosing space 3001. In this arrangement, the enclosing space 3001 can surround the heat exchange section 40, allowing the heat exchange section 40 to heat the gas in the outlet pipe 30 more effectively. It is worth noting that the outer portion of the gas-liquid separation chamber 101 is closer to the inner wall of the main body 10 than the middle portion of the gas-liquid separation chamber 101.

[0033] Specifically, during normal operation of the gas-liquid separator, the gas, liquid, and oil mixture flows from the mixture inlet pipe 20 into the gas-liquid separation chamber 101. Some of the tiny fluid particles in the fluid collide and combine with each other to form larger liquid particles that settle to the bottom of the gas-liquid separation chamber 101. The gaseous part flows from the inlet 3101 into the outlet pipe 30. When it flows through the oil return port 3201, it forms a negative pressure at a certain flow rate, adsorbing the oil and liquid mixture at the bottom of the gas-liquid separation chamber 101 and causing the mixture to atomize instantly. Finally, it is carried back to the compressor through the outlet 3301 of the outlet pipe 30.

[0034] As shown in Figures 3 to 5, further, the two ends of the central heat exchange section 41 in the horizontal direction are located on both sides of the enclosing space 3001, and two peripheral heat exchange sections 42 are provided, which are respectively connected to the two ends of the central heat exchange section 41 in the horizontal direction. In this embodiment, the two peripheral heat exchange sections 42 are symmetrically connected to the two ends of the central heat exchange section 41. The symmetrical distribution of the peripheral heat exchange sections 42 helps to uniformly diffuse heat within the gas-liquid separation chamber 101, prevents local overheating or overcooling, and ensures uniform temperature distribution of lubricating oil and refrigerant throughout the chamber.

[0035] Specifically, the central heat exchange section 41 includes a first connecting section 411, two vertical sections 412, and two second connecting sections 413. The first connecting section 411 extends through the enclosing space 3001, with both ends located on either side of the enclosing space 3001. The two vertical sections 412 extend along the axis of the gas-liquid separator and connect to the two ends of the first connecting section 411, respectively. The second connecting sections 413 are correspondingly arranged to the vertical sections 412, with one end connected to a vertical section 412 and the other end connected to the corresponding peripheral heat exchange section 42. This arrangement ensures the compact structure of the central heat exchange section 41. The fact that both vertical sections 412 extend along the axis of the gas-liquid separation chamber 101 allows the central heat exchange section 41 to heat lubricating oil and refrigerant to a certain depth, improving the adaptability of the device.

[0036] As shown in Figures 3 to 8, further, in a plane perpendicular to the axis of the gas-liquid separator, the projections of the two second connecting sections 413 are located on both sides of the projection of the first connecting section 411, and the angle between the projection of each second connecting section 413 and the projection of the first connecting section 411 is an acute angle α. The projection of the second section 32 intersects with the projection of the first connecting section 411. This arrangement ensures that the central heat exchange section 41 is as close as possible to the enclosing space 3001 to heat the lubricating oil and refrigerant near the enclosing space 3001. Specifically, the above arrangement ensures that the first vertical section 412 and the second connecting section 413 connected to the second vertical section 412 are located on both sides of the first section 31, and the second vertical section 412 and the second connecting section 413 connected to the first vertical section 412 are located on both sides of the third section 33. This further improves the structural compactness of the device and the uniformity and consistency of heating the lubricating oil and refrigerant around the outlet pipe 30.

[0037] Furthermore, the first connecting section 411 is connected to the top of the vertical section 412, and the second connecting section 413 is connected to the bottom of the vertical section 412. This arrangement brings the two second connecting sections 413 closer to the bottom of the outlet pipe 30, which improves the heating effect on the lubricating oil and refrigerant near the oil return port 3201 and enhances the stability of the device under low-temperature conditions.

[0038] This solution does not limit the specific shape of the first connecting segment 411.

[0039] In some embodiments of this solution, the first connecting segment 411 includes a first bent segment. The inclusion of the first bent segment can maximize the length of the first connecting segment 411 and improve the heating effect.

[0040] In this embodiment of the solution, the first connecting segment 411 includes a first arc-shaped segment. Specifically, the first connecting segment 411 is an arc-shaped structure that protrudes away from the bottom of the gas-liquid separation chamber 101. The arc-shaped structure increases the total length of the first connecting segment 411 and improves the heating effect.

[0041] This solution does not limit the specific shape of the second connecting segment 413.

[0042] In some embodiments of this solution, the second connecting segment 413 includes a second bent segment. The inclusion of the second bent segment maximizes the total length of the second connecting segment 413, thereby improving the heating effect.

[0043] In this embodiment, the second connecting segment 413 includes a second arc-shaped segment. Specifically, the second connecting segment 413 is an arc-shaped structure protruding towards the bottom of the gas-liquid separation chamber 101. The two second connecting segments 413 are located on both sides of the enclosing space 3001, and the height of both second connecting segments 413 is higher than the height of the second segment 32. The arc-shaped structure increases the total length of the second connecting segment 413 and improves the heating effect.

[0044] In this embodiment, the central heat exchange section 41 has a centrally symmetrical structure. This configuration can further improve the uniformity and consistency of heating the lubricating oil and refrigerant in the central heat exchange section 41.

[0045] Furthermore, the peripheral heat exchange section 42 extends from the bottom to the top of the gas-liquid separation chamber 101. That is, in this embodiment, the central heat exchange section 41 and the peripheral heat exchange section 42 form a centrally symmetrical structure. This arrangement further improves the uniformity and consistency of heating the lubricating oil and refrigerant. Moreover, the above arrangement facilitates the assembly of the heat exchange section 40.

[0046] Specifically, the heat exchange section 40 is a hollow tubular structure, with its two open ends located on the outside of the gas-liquid separation chamber 101. The heat exchange section 40 is used to introduce a high-temperature medium. In this embodiment, the top ends of the two peripheral heat exchange sections 42 pass through the top wall of the main body 10 and are located on the outside of the main body 10.

[0047] As shown in Figure 1, in this embodiment of the solution, the main body 10 includes a shell 11, a top cover 12, and a bottom cover 13, which are separately configured. The top and bottom of the shell 11 are both open structures. The bottom cover 13 is located at the opening at the bottom of the shell 11, and the top cover 12 is located at the opening at the top of the shell 11. The top cover 12 is provided with two second mounting ports 1002, which are correspondingly provided with the peripheral heat exchange section 42.

[0048] When assembling the heat exchange section 40 and the top cover 12, the opening end of the peripheral heat exchange section 42 passes through the corresponding second mounting port 1002 from the side of the top cover 12 near the housing 11 and is located on the side of the top cover 12 away from the housing 11; then, the top cover 12 and the peripheral heat exchange section 42 are welded.

[0049] As shown in Figure 8, further, in the outlet pipe 30, the third section 33 includes a first vertical pipe section 331, a transition pipe section 332, and a second vertical pipe section 333 connected sequentially. The first vertical pipe section 331 is connected to the second section 32, and the second vertical pipe section 333 is connected to the outlet 3301. Along the direction from the first vertical pipe section 331 to the second vertical pipe section 333, the distance between the transition pipe section 332 and the first section 31 gradually decreases, and the distance between the second vertical pipe section 333 and the first section 31 is smaller than the distance between the first vertical pipe section 331 and the first section 31. When gas flows through the outlet pipe 30, it first passes through the first vertical pipe section 331, then enters the transition pipe section 332, and finally reaches the second vertical pipe section 333 and is discharged from the outlet 3301. In the design, along the direction from the first vertical pipe section 331 to the second vertical pipe section 333, the distance between the transition pipe section 332 and the first section 31 gradually decreases. This change causes the gas velocity to increase when passing through the transition pipe section 332. Since the droplets have a large mass, their momentum changes slowly and they are not easily accelerated by the gas. Therefore, they are more likely to collide with the pipe wall and be intercepted, thus achieving effective gas-liquid separation and reducing the possibility of droplets being carried out by the gas.

[0050] As shown in Figures 4, 5, and 8, in this embodiment of the scheme, the transition pipe section 332 is located above the middle heat exchange section 41. This arrangement ensures that the middle heat exchange section 41 has sufficient length within the gas-liquid separation chamber 101, and the above arrangement allows the outlet pipe 30 and the heat exchange section 40 to effectively utilize the space inside the gas-liquid separation chamber 101, thus improving the rationality of the structural design.

[0051] As shown in Figures 1 and 8, specifically, the top cover 12 is also provided with a third mounting port 1003 that communicates with the gas-liquid separation chamber 101, and the top of the second vertical pipe section 333 is connected to the third mounting port 1003.

[0052] In this embodiment of the solution, the gas-liquid separator further includes a connecting pipe 121, which is disposed on the side of the top cover 12 away from the gas-liquid separation chamber 101 and communicates with the third mounting port 1003. Specifically, the connecting pipe 121 is connected to the top cover 12 by furnace brazing.

[0053] Furthermore, in the exhaust pipe 30, the air inlet 3101 has a flared structure. This design increases the cross-sectional area of ​​the air inlet 3101, improving the smoothness of gas flow into the exhaust pipe 30.

[0054] Furthermore, the main body 10 is provided with a first mounting port 1001, and the mixture inlet pipe 20 is connected to the gas-liquid separation chamber 101 through the first mounting port 1001.

[0055] Specifically, the mixture inlet pipe 20 is connected to the top cover 12 by brazing in a furnace.

[0056] As shown in Figure 9, in this embodiment of the scheme, the gas-liquid separator further includes a gas guide section 50, which is connected to the mixture inlet pipe 20 to form a mixture feed section.

[0057] The air guide section 50 is disposed within the gas-liquid separation chamber 101. The air guide section 50 has an air guide cavity 501, the top of which communicates with the first mounting port 1001. The side of the air guide cavity 501 has a mixture outlet 502, which is opposite to the air inlet 3101. This arrangement prevents the mixture from directly entering the gas-liquid separation chamber 101 from the mixture outlet 502 and then directly entering the air outlet pipe 30 through the air inlet 3101 without separation, thus ensuring the effectiveness of gas-liquid separation.

[0058] Furthermore, the height of the air inlet 3101 is higher than the minimum height of the mixture outlet 502. This arrangement allows the liquid fluid flowing out of the mixture outlet 502 to descend as far below the air inlet 3101 as possible, reducing the possibility of the liquid fluid entering the outlet pipe 30 through the air inlet 3101.

[0059] Specifically, the air guide cavity 501 is cubic in shape, and the air guide part 50 includes a bottom wall and a first side wall, a second side wall and a third side wall connected sequentially along the circumference of the bottom wall. The first side wall and the third side wall are parallel to each other, and the air guide cavity 501 is formed between the first side wall, the second side wall, the third side wall, the bottom wall and the top cover 12. The mixture outlet 502 is disposed opposite to the second side wall.

[0060] In this embodiment, the gas-liquid separator further includes a baffle 60, which is disposed within the gas-liquid separation chamber 101 and located between the mixture outlet 502 and the air inlet 3101, thus blocking the mixture outlet 502 and the air inlet 3101. When the mixture flows from the mixture outlet 502 into the gas-liquid separation chamber 101, the liquid substances in the mixture may impact the side wall of the gas-liquid separation chamber 101. The baffle 60 reduces the possibility of liquid substances splashing into the air inlet 3101, thereby improving the purity of the gas in the outlet pipe 30.

[0061] Specifically, the baffle 60 is disposed on the outer wall of the air guide section 50, and the baffle 60 is located outside the mixture outlet 502. Furthermore, the air guide section 50 and the baffle 60 are integrally formed structures.

[0062] Specifically, the air guide section 50 and the partition section 60 are formed by bending a plate-like structure. This plate-like structure includes a first plate and a second plate connected to each other, both of which are rectangular plate-like structures. The second plate is connected to one sidewall of the first plate along its length, and both ends of the first plate protrude outwards from the second plate along its length. After bending, the first plate forms the bottom wall, the first sidewall, and the third sidewall of the air guide section 50. After bending, the main body of the second plate forms the second sidewall of the air guide section 50, and both ends of the second plate along its length protrude outwards from the first and third sidewalls, respectively. The two ends of the second plate along its length are bent towards the first and third sidewalls, respectively, forming two partition sections 60.

[0063] As shown in Figures 2, 8, and 10, a positioning part 70 is further provided inside the gas-liquid separation chamber 101, which is positioned and cooperates with the outlet pipe 30. This arrangement ensures that the outlet pipe 30 is fixed in position inside the gas-liquid separator, preventing displacement or damage to the outlet pipe 30 due to vibration or fluid impact during system operation.

[0064] In this embodiment, the positioning part 70 includes a positioning plate 71, which is disposed at the bottom of the gas-liquid separation chamber 101. An installation space exists between the positioning plate 71 and the bottom wall of the gas-liquid separation chamber 101. The positioning plate 71 has a positioning hole 7101 that penetrates through it. At least a portion of the second segment 32 is embedded in the installation space through the positioning hole 7101, and the positioning hole 7101 engages with the second segment 32. Through the installation space between the positioning plate 71 and the bottom wall of the gas-liquid separation chamber 101, and the engagement of the positioning hole 7101, effective positioning of the second segment 32 of the outlet pipe 30 is achieved. This configuration is simple in structure and facilitates assembly.

[0065] Furthermore, the positioning part 70 also includes an annular plate 72, which is arranged in a ring around the outer edge of the positioning plate 71. The annular plate 72 is located at the bottom of the positioning plate 71, and the positioning part 70 is press-fitted to the bottom end of the housing 11 through the annular plate 72.

[0066] Specifically, the outer wall of the annular plate 72 abuts against the inner wall of the housing 11. The bottom cover 13 has an upwardly bent upper flange, and the bottom end of the housing 11 passes through the upper flange.

[0067] Furthermore, the oil return port 3201 is located on the second section 32 and within the installation space. The gas-liquid separator also includes a filter section 80, which is located at the oil return port 3201. The height of the oil return port 3201 and the filter section 80 is no higher than the height of the positioning plate 71. This arrangement facilitates the return of oil in the gas-liquid separation chamber 101 to the gas outlet pipe 30 through the oil return port 3201. The filter section 80 is used to filter the oil to ensure its cleanliness and prevent contaminants from entering the system.

[0068] As shown in Figure 1, the gas-liquid separator further includes a mounting part 90, which is disposed on the outer surface of the bottom of the main body 10. The center line of the mounting part 90, the central axis of the main body 10, and the axis of the air outlet 3301 coincide. In this embodiment, the mounting part 90 includes a mounting screw. The mounting part 90 facilitates the installation of the gas-liquid separator on other components. Furthermore, when air exits from the air outlet 30, resonance may occur. The above-mentioned design ensures better vertical stability of the gas-liquid separator and reduces resonance.

[0069] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0070] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

Claims

1. A gas-liquid separator, characterized in that, The gas-liquid separator includes: The main body (10) has a gas-liquid separation chamber (101); The mixture inlet pipe (20) is connected to the gas-liquid separation chamber (101); The exhaust pipe (30) includes a first section (31), a second section (32), and a third section (33) that are interconnected. The first section (31) and the third section (33) are both located above the second section (32). The first section (31), the second section (32), and at least part of the third section (33) are located inside the gas-liquid separation chamber (101). The top end of the first section (31) has an air inlet (3101). The end of the third section (33) away from the second section (32) forms an air outlet (3301). The air outlet (3301) is connected to the outside of the gas-liquid separation chamber (101). The first section (31), the second section (32), and the third section (33) form an enclosing space (3001). Along the axial direction of the main body (10), the cross-sectional area of ​​the top end of the enclosing space (3001) is smaller than the cross-sectional area of ​​the bottom end of the enclosing space (3001). The heat exchange section (40) includes a central heat exchange section (41) and a peripheral heat exchange section (42) located within the gas-liquid separation chamber (101). The central heat exchange section (41) passes through the enclosing space (3001), and the peripheral heat exchange section (42) is located outside the enclosing space (3001) and close to the side wall of the gas-liquid separation chamber (101).

2. The gas-liquid separator according to claim 1, characterized in that, The two ends of the central heat exchange section (41) in the horizontal direction are located on both sides of the enclosed space (3001). There are two peripheral heat exchange sections (42), and the two peripheral heat exchange sections (42) are respectively connected to the two ends of the central heat exchange section (41) in the horizontal direction.

3. The gas-liquid separator according to claim 2, characterized in that, The central heat exchange section (41) includes: A first connecting segment (411) is inserted within the enclosed space (3001). The two ends of the first connecting segment (411) are located on both sides of the enclosed space (3001). The first connecting segment (411) includes a first arc-shaped segment or a first bent segment. Two vertical sections (412) extend along the axial direction of the gas-liquid separator, and the two vertical sections (412) are respectively connected to the two ends of the first connecting section (411); Two second connecting sections (413) are provided corresponding to the vertical section (412). One end of the second connecting section (413) is connected to the vertical section (412), and the other end of the second connecting section (413) is connected to the corresponding peripheral heat exchange section (42). The second connecting section (413) includes a second arc section or a second bend section.

4. The gas-liquid separator according to claim 3, characterized in that, In a plane perpendicular to the axis of the gas-liquid separator, the projections of the two second connecting segments (413) are located on both sides of the projection of the first connecting segment (411). The angle between the projection of each second connecting segment (413) and the projection of the first connecting segment (411) is an acute angle. The projection of the second segment (32) intersects with the projection of the first connecting segment (411).

5. The gas-liquid separator according to claim 3, characterized in that, The first connecting section (411) is connected to the top of the vertical section (412), and the second connecting section (413) is connected to the bottom of the vertical section (412); the peripheral heat exchange section (42) extends from the bottom to the top of the gas-liquid separation chamber (101).

6. The gas-liquid separator according to any one of claims 1 to 5, characterized in that, The third segment (33) includes a first vertical pipe segment (331), a transition pipe segment (332), and a second vertical pipe segment (333) connected in sequence. The first vertical pipe segment (331) is connected to the second segment (32), and the second vertical pipe segment (333) is connected to the air outlet (3301). Along the direction from the first vertical pipe segment (331) to the second vertical pipe segment (333), the distance between the transition pipe segment (332) and the first segment (31) gradually decreases, and the distance between the second vertical pipe segment (333) and the first segment (31) is smaller than the distance between the first vertical pipe segment (331) and the first segment (31).

7. The gas-liquid separator according to any one of claims 1 to 5, characterized in that, The main body (10) is provided with a first mounting port (1001), and the mixture inlet pipe (20) is connected to the gas-liquid separation chamber (101) through the first mounting port (1001). The gas-liquid separator further includes: An air guide section (50) is disposed within the gas-liquid separation chamber (101). The air guide section (50) has an air guide cavity (501). The top of the air guide cavity (501) communicates with the first mounting port (1001). The side of the air guide cavity (501) has a mixture outlet (502). The mixture outlet (502) is away from the air inlet (3101). The height of the air inlet (3101) is higher than the lowest height of the mixture outlet (502).

8. The gas-liquid separator according to any one of claims 1 to 5, characterized in that, The gas-liquid separator includes a mixture feed section, one end of which is located inside and communicates with the gas-liquid separation chamber (101), and the other end of which is located outside the main body (10) and forms the mixture inlet pipe (20). The two ends of the mixture feed section are interconnected, and a mixture outlet (502) is provided at the end of the mixture feed section located inside the gas-liquid separation chamber. The gas-liquid separator also includes: A baffle (60) is disposed inside the gas-liquid separation chamber (101), and the mixture outlet (502) and the air inlet (3101) are located on both sides of the baffle (60).

9. The gas-liquid separator according to any one of claims 1 to 5, characterized in that, The bottom of the gas-liquid separation chamber (101) is provided with a positioning part (70), which is positioned and engaged with the gas outlet pipe (30); the positioning part (70) includes a positioning plate (71), which is provided at the bottom of the gas-liquid separation chamber (101), and there is an installation space between the positioning plate (71) and the bottom wall of the gas-liquid separation chamber (101); the positioning plate (71) is provided with a positioning hole (7101), which is provided through the positioning plate (71); at least a part of the second segment (32) is embedded in the installation space through the positioning hole (7101), and the positioning hole (7101) is positioned and engaged with the second segment (32).

10. The gas-liquid separator according to claim 9, characterized in that, The bottom of the air outlet pipe (30) is provided with an oil return port (3201) that communicates with the gas-liquid separation chamber (101). The oil return port (3201) is located on the second section (32) and is located in the installation space. The gas-liquid separator also includes a filter section (80) which is located at the oil return port (3201).

11. The gas-liquid separator according to any one of claims 1 to 5, characterized in that, The gas-liquid separator also includes: The mounting part (90) is provided on the outer surface of the bottom of the body part (10), and the center line of the mounting part (90), the central axis of the body part (10) and the axis of the air outlet (3301) coincide.

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