Gas-liquid separator

Abstract

The utility model provides a gas-liquid separator which comprises a body part provided with a gas-liquid separation cavity; the mixture inlet pipe is communicated with the gas-liquid separation cavity; the gas outlet pipe comprises a first section, a second section and a third section which are communicated with one another, the first section and the third section are located above the second section, the first section, the second section and at least part of the third section are located in the gas-liquid separation cavity, a gas inlet is formed in the top end of the first section, and a gas outlet is formed in the end, away from the second section, of the third section; the gas outlet is communicated with the outside of the gas-liquid separation cavity, and the first section, the second section and the third section form an enclosed space; and the heat exchange part comprises 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 is arranged in the surrounding space in a penetrating mode, and the peripheral heat exchange section is located on the outer side of the surrounding space and close to the side wall of the gas-liquid separation cavity. According to the scheme, the problems that the heat exchange pipe is coiled on the periphery of the gas outlet pipe, a refrigerant in the barrel of the gas-liquid separator cannot be effectively and uniformly heated, and the heat exchange efficiency is low can be solved.

Description

Technical Field

[0001] The utility model relates to the field of gas-liquid separators, and in particular to a gas-liquid separator. Background Art

[0002] In air conditioning systems and heat pumps, the gas-liquid separator is a key component. Its primary function is to separate and store liquid refrigerant and compressor lubricant, ensuring proper compressor operation and efficient system performance. In low-temperature environments, the viscosity of the liquid refrigerant and lubricant increases, impairing fluidity and potentially freezing. This can lead to a lack of lubrication and refrigerant during compressor startup, increasing wear and tear on the compressor and the entire air conditioning system.

[0003] Currently, heat exchange within the gas-liquid separator is primarily achieved through internal heat exchange tubes. These tubes utilize the heat generated by the compressor's coolant circulation to heat the frozen refrigerant and lubricating oil. Typically, the heat exchange tubes consist of a spiral tube located within the gas-liquid separator near the bottom, typically coiled around the outer periphery of the gas-liquid separator's outlet pipe. However, this arrangement fails to effectively and uniformly heat the refrigerant within the separator's cylinder, resulting in low heat exchange efficiency. Utility Model Content

[0004] The utility model provides a gas-liquid separator to solve the problem of low heat exchange efficiency in the prior art in that the spiral tube in the cylinder of the gas-liquid separator is coiled around the outer periphery of the gas outlet pipe.

[0005] The utility model provides a gas-liquid separator, comprising: a main body, having a gas-liquid separation chamber; a mixture inlet pipe, connected to the gas-liquid separation chamber; an air outlet pipe, comprising a first section, a second section and a third section that are connected to each other, the first section and the third section are all located above the second section, the first section, the second section and at least part of the third section are located in the gas-liquid separation chamber, the top of the first section has an air inlet, an end of the third section away from the second section forms an air outlet, the air outlet is connected to the outside of the gas-liquid separation chamber, and an oil return port connected to the gas-liquid separation chamber is provided at the bottom of the air outlet pipe, the first section, the second section and the third section form an enclosed space, and along the axial direction of the main body, the cross-sectional area of ​​the top end of the enclosed space is smaller than the cross-sectional area of ​​the bottom end of the enclosed space; a heat exchange part, comprising a middle heat exchange section and a peripheral heat exchange section located in the gas-liquid separation chamber, the middle heat exchange section is arranged in the enclosed space, and the peripheral heat exchange section is located outside the enclosed space and close to the side wall of the gas-liquid separation chamber.

[0006] 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. The two peripheral heat exchange sections are respectively connected to the two ends of the central heat exchange section in the horizontal direction.

[0007] Furthermore, the middle heat exchange section includes: a first connecting section, which is arranged in the enclosed space, with both ends of the first connecting section located on both sides of the enclosed space, and the first connecting section includes a first arc section or a first bent section; two vertical sections, both extending along the axial direction of the gas-liquid separator, and the two vertical sections are respectively connected to the two ends of the first connecting section; two second connecting sections, the second connecting section is arranged corresponding to the vertical section, one end of the second connecting section is connected to the vertical section, and the other end of the second connecting section is connected to the corresponding peripheral heat exchange section, and the second connecting section includes a second arc section or a second bent section.

[0008] Furthermore, in a plane perpendicular to the axial direction of the gas-liquid separator, the projections of the two second connecting segments are respectively located on both sides of the projection of the first connecting segment, and the angles between the projections of each second connecting segment and the projections of the first connecting segment are acute angles, and the projections of the second segments intersect with the projections of the first connecting segment.

[0009] 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.

[0010] 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, the second vertical pipe section is connected to the air outlet, and 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.

[0011] Furthermore, a first mounting port is provided on the main body, and the mixture inlet pipe is connected to the gas-liquid separation chamber through the first mounting port. The gas-liquid separator also includes: an air guide portion, which is provided in the gas-liquid separation chamber, and the air guide portion has an air guide chamber, the top of the air guide chamber is connected to the first mounting port, and the side of the air guide chamber has a mixture outlet, and the mixture outlet is away from the air inlet; the height of the air inlet is higher than the lowest height of the mixture outlet.

[0012] Furthermore, the gas-liquid separator includes a mixture feed part, one end of the mixture feed part is located in the gas-liquid separation chamber and is connected to the gas-liquid separation chamber, the other end of the mixture feed part is located on the outside of the main body and forms a mixture inlet pipe, the two ends of the mixture feed part are connected to each other, and the mixture feed part is located at one end of the gas-liquid separation chamber and is provided with a mixture outlet. The gas-liquid separator also includes a baffle part, which is provided in the gas-liquid separation chamber, and the mixture outlet and the air inlet are respectively located on both sides of the baffle part.

[0013] Furthermore, a positioning portion is provided at the bottom of the gas-liquid separation chamber, and the positioning portion is positioned and matched with the gas outlet pipe; the positioning portion includes a positioning plate, which is provided 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, and the positioning plate is provided with a positioning hole, and the positioning hole passes through the positioning plate, and at least part of the second section is embedded in the installation space through the positioning hole, and the positioning hole is positioned and matched with the second section.

[0014] Furthermore, the oil return port is arranged on the second section, and the oil return port is located in the installation space. The gas-liquid separator also includes a filter portion, and the filter portion is arranged at the oil return port.

[0015] Furthermore, the gas-liquid separator further comprises: a mounting portion, which is arranged on the outer surface of the bottom of the main body, and the center line of the mounting portion, the central axis of the main body and the axis of the gas outlet coincide with each other.

[0016] By applying the technical solution of the present invention, under low-temperature working conditions, the cooperation of the middle heat exchange section and the peripheral heat exchange section can improve the heat exchange effect of the refrigerant and lubricating oil in the gas-liquid separation chamber, improve the fluidity of the refrigerant and lubricating oil, and ensure the normal operation of the system. Specifically, the middle heat exchange section mainly heats the refrigerant and lubricating oil in the middle of the gas-liquid separation chamber, and the peripheral heat exchange section mainly heats the refrigerant and lubricating oil in the peripheral part of the gas-liquid separation chamber. Such an arrangement can ensure that the heat of the heat exchange section is effectively transferred to the middle and peripheral parts of the gas-liquid separation chamber, with a wide coverage range. Under low-temperature working conditions, the lubricating oil and refrigerant in the middle and peripheral parts of the gas-liquid separation chamber can be thawed or preheated synchronously and efficiently, thereby improving the heat exchange efficiency, improving the uniformity and consistency of the temperature rise of various parts in the gas-liquid separation chamber, avoiding local overheating or unthawed conditions, and ensuring the stability and safety of the system when starting at low temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 The structure diagram of the gas-liquid separator provided by the embodiment of the utility model is shown;

[0019] Figure 2 A partial structural cross-sectional view of a gas-liquid separator provided by an embodiment of the present utility model is shown;

[0020] Figure 3 A schematic structural diagram of the first perspective of the cooperation between the air outlet pipe and the heat exchange portion provided by an embodiment of the present utility model is shown;

[0021] Figure 4A schematic structural diagram of the cooperation between the air outlet pipe and the heat exchange portion provided by an embodiment of the present utility model from a second perspective is shown;

[0022] Figure 5 The figure shows a schematic structural diagram of the heat exchange portion provided by an embodiment of the present utility model;

[0023] Figure 6 Shows a bottom view of the heat exchange portion provided by an embodiment of the present utility model;

[0024] Figure 7 A bottom view of the heat exchange portion and the air outlet pipe provided in an embodiment of the present utility model is shown;

[0025] Figure 8 A schematic diagram of the structure of the cooperation between the air outlet pipe and the positioning portion provided in an embodiment of the present utility model is shown;

[0026] Figure 9 A partial structural diagram of a gas-liquid separator provided by an embodiment of the present utility model is shown;

[0027] Figure 10 A schematic diagram of the exploded structure of the positioning portion and the bottom end cover provided by an embodiment of the utility model is shown.

[0028] The above drawings include the following reference numerals:

[0029] 10. Main body; 101. Gas-liquid separation chamber; 1001. First mounting port; 1002. Second mounting port; 1003. Third mounting port;

[0030] 11. Shell; 12. Top cover; 121. Connecting pipe; 13. Bottom cover;

[0031] 20. Mixture inlet pipe;

[0032] 30. Exhaust pipe; 3001. Enclosed space;

[0033] 31. First paragraph; 3101. Air intake;

[0034] 32, second section; 3201, oil return port;

[0035] 33. Third section; 3301. Air outlet; 331. First vertical pipe section; 332. Transition pipe section; 333. Second vertical pipe section;

[0036] 40. Heat exchange unit;

[0037] 41, middle heat exchange section; 411, first connecting section; 412, vertical section; 413, second connecting section;

[0038] 42. Peripheral heat exchange section;

[0039] 50. Air guide portion; 501. Air guide cavity; 502. Mixture outlet;

[0040] 60. Baffle;

[0041] 70. Positioning portion; 71. Positioning plate; 7101. Positioning hole; 72. Annular plate;

[0042] 80. Filter unit;

[0043] 90. Installation department. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] like Figures 1 to 8 As shown, an embodiment of the present invention provides a gas-liquid separator, which includes a main body 10, a mixture inlet pipe 20, an air outlet pipe 30, and a heat exchange portion 40. 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 air outlet pipe 30 includes a first section 31, a second section 32, and a third section 33 that are connected to 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 of the first section 31 has an air inlet 3101, and 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. A return oil port 3201 connected to the gas-liquid separation chamber 101 is provided at the bottom of the air outlet pipe 30. The first section 31, the second section 32 and the third section 33 form an enclosed space 3001. Along the axial direction of the main body 10, the cross-sectional area of ​​the top end of the enclosed space 3001 is smaller than the cross-sectional area of ​​the bottom end of the enclosed space; the heat exchange part 40 includes a middle heat exchange section 41 and a peripheral heat exchange section 42 located in the gas-liquid separation chamber 101. The middle heat exchange section 41 is arranged in the enclosed space 3001, and the peripheral heat exchange section 42 is located on the outside of the enclosed space 3001 and close to the side wall of the gas-liquid separation chamber 101.

[0046] By applying the technical solution of the present invention, under low-temperature working conditions, the cooperation of the central heat exchange section 41 and the peripheral heat exchange section 42 can improve the heat exchange effect of the refrigerant and lubricating oil in the gas-liquid separation chamber 101, improve 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 central part of the gas-liquid separation chamber 101, and the peripheral heat exchange section 42 mainly heats the refrigerant and lubricating oil in the peripheral part of the gas-liquid separation chamber 101. Such a setting can ensure that the heat of the heat exchange section 40 is effectively transferred to the central and peripheral parts of the gas-liquid separation chamber 101, with a wide coverage range. Under low-temperature working conditions, the lubricating oil and refrigerant in the central and peripheral parts of the gas-liquid separation chamber 101 can be thawed or preheated synchronously and efficiently, thereby improving the heat exchange efficiency, improving the uniformity and consistency of the temperature rise of various parts in the gas-liquid separation chamber 101, avoiding local overheating or unthawed conditions, and ensuring the stability and safety of the system when starting at low temperatures. Furthermore, along the axis of the main body 10, the cross-sectional area of ​​the bottom end of the enclosed space 3001 is larger than that of the top end. The central heat exchange section 41 and the peripheral heat exchange section 42 of the heat exchange unit 40 are positioned near the bottom end of the enclosed space 3001. This arrangement allows the enclosed space 3001 to surround the heat exchange unit 40, enabling the heat exchange unit 40 to more effectively heat the gas within the gas outlet pipe 30. It is noteworthy that the peripheral portion of the gas-liquid separation chamber 101 is closer to the inner wall of the main body 10 than the central portion of the gas-liquid separation chamber 101.

[0047] Specifically, when the gas-liquid separator is operating normally, the gas, liquid and oil mixture fluid flows from the mixture inlet pipe 20 to the gas-liquid separation chamber 101, and some tiny fluid particles in the fluid collide with each other and combine to form larger liquid particles that settle to the bottom of the gas-liquid separation chamber 101; the gaseous part flows from the air inlet 3101 into the air outlet pipe 30, and when it flows through the oil return port 3201, it forms a negative pressure at a certain flow rate, adsorbs the oil and liquid mixed fluid at the bottom of the gas-liquid separation chamber 101, and makes the mixed fluid instantly atomized, and finally brought back to the compressor through the air outlet 3301 of the air outlet pipe 30.

[0048] like Figures 3 to 5 Furthermore, the two horizontal ends of the central heat exchange section 41 are located on either side of the enclosed space 3001, and two peripheral heat exchange sections 42 are provided, each connected to the two horizontal ends of the central heat exchange section 41. In this embodiment, the two peripheral heat exchange sections 42 are symmetrically connected at both ends of the central heat exchange section 41. The symmetrical distribution of the peripheral heat exchange sections 42 facilitates uniform heat diffusion within the gas-liquid separation chamber 101, preventing localized overheating or overcooling and ensuring uniform temperature distribution of the lubricating oil and refrigerant throughout the chamber.

[0049] 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 is disposed within the enclosed space 3001, with both ends of the first connecting section 411 located on either side of the enclosed space 3001. The two vertical sections 412 extend along the axis of the gas-liquid separator and are respectively connected to the two ends of the first connecting section 411. The second connecting section 413 is disposed corresponding to the vertical sections 412, with one end of the second connecting section 413 connected to the vertical section 412 and the other end of the second connecting section 413 connected to the corresponding peripheral heat exchange section 42. This arrangement ensures the compactness of the central heat exchange section 41. The two vertical sections 412 extend along the axis of the gas-liquid separation chamber 101, enabling the central heat exchange section 41 to heat lubricating oil and refrigerant of a certain depth, thereby improving the adaptability of the device.

[0050] like Figures 3 to 8 As shown, further, in a plane perpendicular to the axis of the gas-liquid separator, the projections of the two second connecting segments 413 are respectively located on either side of the projection of the first connecting segment 411, and the angle between the projection of each second connecting segment 413 and the projection of the first connecting segment 411 is an acute angle a. The projection of the second segment 32 intersects with the projection of the first connecting segment 411. This arrangement places the central heat exchange section 41 as close as possible to the enclosed space 3001 to heat the lubricating oil and refrigerant near the enclosed space 3001. Specifically, the above arrangement causes the first vertical segment 412 and the second connecting segment 413 connected to the second vertical segment 412 to be respectively located on either side of the first segment 31, and the second vertical segment 412 and the second connecting segment 413 connected to the first vertical segment 412 to be respectively located on either side of the third segment 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.

[0051] 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 places the two second connecting sections 413 closer to the bottom of the air outlet pipe 30, thereby enhancing the heating effect on the lubricating oil and refrigerant near the oil return port 3201 and improving the stability of the device under low-temperature conditions.

[0052] This solution does not limit the specific shape of the first connecting section 411.

[0053] In some embodiments of this solution, the first connecting section 411 includes a first bending section. The provision of the first bending section can maximize the length of the first connecting section 411 and enhance the heating effect.

[0054] In the embodiment of this solution, the first connecting section 411 includes a first arc-shaped section. Specifically, the first connecting section 411 is an arc-shaped structure that bulges away from the bottom of the gas-liquid separation chamber 101. The provision of the arc-shaped structure can increase the total length of the first connecting section 411 and improve the heating effect.

[0055] This solution does not limit the specific shape of the second connecting section 413.

[0056] In some embodiments of this solution, the second connecting section 413 includes a second bent section. The provision of the second bent section can maximize the total length of the second connecting section 413 and enhance the heating effect.

[0057] In the embodiment of this solution, the second connecting section 413 comprises a second arc-shaped section. Specifically, the second connecting section 413 is an arc-shaped structure that protrudes toward the bottom of the gas-liquid separation chamber 101. The two second connecting sections 413 are located on either side of the enclosed space 3001, and the height of the two second connecting sections 413 is higher than that of the second section 32. The provision of the arc-shaped structure can increase the total length of the second connecting section 413, thereby improving the heating effect.

[0058] In the embodiment of this solution, the central heat exchange section 41 is a centrally symmetrical structure as a whole. Such a configuration can further improve the uniformity and consistency of the central heat exchange section 41 in heating the lubricating oil and the refrigerant.

[0059] Furthermore, the peripheral heat exchange section 42 extends from the bottom to the top of the gas-liquid separation chamber 101. In other words, 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. Furthermore, this arrangement facilitates assembly of the heat exchange unit 40.

[0060] Specifically, the heat exchange portion 40 is a hollow tubular structure, with its two open ends located outside the gas-liquid separator cavity. High-temperature medium is introduced into the heat exchange portion 40. In this embodiment, the top ends of the two peripheral heat exchange segments 42 extend through the top wall of the main body 10 and are located outside the main body 10.

[0061] like Figure 1 As shown, in the embodiment of this solution, the main body 10 includes a shell 11, a top cover 12, and a bottom cover 13, which are separately arranged. The top and bottom ends of the shell 11 are both open structures. The bottom cover 13 is arranged at the opening at the bottom of the shell 11, and the top cover 12 is arranged at the opening at the top of the shell 11. The top cover 12 is provided with two second mounting openings 1002, which are arranged corresponding to the peripheral heat exchange section 42.

[0062] When assembling the heat exchange portion 40 and the top cover 12, the open end of the peripheral heat exchange section 42 passes through the corresponding second mounting port 1002 from the side of the top cover 12 close to the shell 11 and is located on the side of the top cover 12 away from the shell 11; thereafter, the top cover 12 and the peripheral heat exchange section 42 are welded.

[0063] like Figure 8 As shown, in the outlet pipe 30, the third section 33 includes a first vertical section 331, a transition section 332, and a second vertical section 333, which are connected in sequence. The first vertical section 331 is connected to the second section 32, and the second vertical section 333 is connected to the gas outlet 3301. Along the direction from the first vertical section 331 to the second vertical section 333, the distance between the transition section 332 and the first section 31 gradually decreases, and the distance between the second vertical section 333 and the first section 31 is smaller than the distance between the first vertical section 331 and the first section 31. When gas flows through the outlet pipe 30, it first passes through the first vertical section 331, then enters the transition section 332, and finally reaches the second vertical section 333 and is discharged from the gas outlet 3301. In the design, the distance between the transition pipe section 332 and the first section 31 gradually decreases. This change increases the gas flow rate when passing through the transition pipe section 332. However, due to the large mass of the droplets, their momentum changes slowly and they are not easy to accelerate with the gas. Therefore, they are more likely to collide with the pipe wall and be intercepted, thereby achieving effective separation of gas and liquid and reducing the possibility of droplets being carried out by the gas.

[0064] like Figure 2 and Figure 8 As shown, in the embodiment of this solution, 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 a sufficient length within the gas-liquid separation chamber 101. In addition, this arrangement enables the gas outlet pipe 30 and the heat exchange section 40 to effectively utilize the space within the gas-liquid separation chamber 101, thereby improving the rationality of the structural design.

[0065] like Figure 1 and Figure 8 As shown, specifically, the top cover 12 is further provided with a third installation port 1003 communicating with the gas-liquid separation chamber 101 , and the top of the second vertical pipe section 333 is communicated with the third installation port 1003 .

[0066] In the embodiment of this solution, the gas-liquid separator further includes a connecting pipe 121, which is arranged on a side of the top cover 12 away from the gas-liquid separation chamber 101 and communicates with the third installation port 1003. Specifically, the connecting pipe 121 is connected to the top cover 12 by furnace brazing.

[0067] Furthermore, in the air outlet pipe 30 , the air inlet 3101 is a flared structure, which can increase the cross-sectional area of ​​the air inlet 3101 and improve the smoothness of gas flow into the air outlet pipe 30 .

[0068] Furthermore, a first installation port 1001 is provided on the main body 10 , and the mixture inlet pipe 20 is communicated with the gas-liquid separation chamber 101 through the first installation port 1001 .

[0069] Specifically, the mixture inlet pipe 20 is connected to the top end cover 12 by furnace brazing.

[0070] like Figure 9 As shown, in the embodiment of this solution, the gas-liquid separator further includes an air guide portion 50, and the air guide portion 50 and the mixture inlet pipe 20 are interconnected to form a mixture feeding portion.

[0071] The air guide portion 50 is disposed within the gas-liquid separation chamber 101 and includes a gas guide chamber 501. The top of the gas guide chamber 501 communicates with the first mounting port 1001. A mixture outlet 502 is formed on the side of the gas guide chamber 501, facing away from the air inlet 3101. This arrangement prevents the mixture from entering the gas-liquid separation chamber 101 directly from the mixture outlet 502 and then directly entering the gas outlet pipe 30 through the air inlet 3101 without separation, thereby ensuring effective gas-liquid separation.

[0072] Furthermore, the height of the air inlet 3101 is higher than the lowest height of the mixture outlet 502. This arrangement allows the liquid fluid flowing out of the mixture outlet 502 to drop as far as possible below the air inlet 3101, thereby reducing the possibility of the liquid fluid entering the air outlet pipe 30 through the air inlet 3101.

[0073] Specifically, the air guide cavity 501 is in the shape of a cube, and the air guide portion 50 includes a bottom wall and a first side wall, a second side wall and a third side wall connected in sequence along the circumference of the bottom wall. The first side wall and the third side wall are parallel to each other. 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 end cover 12, and the mixture outlet 502 is arranged opposite to the second side wall.

[0074] In the embodiment of this solution, 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 to separate 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, liquid substances in the mixture may collide with the sidewalls of the gas-liquid separation chamber 101. The provision of the baffle 60 reduces the possibility of liquid substances splashing into the air inlet 3101, thereby improving the purity of the gas within the outlet pipe 30.

[0075] Specifically, the baffle 60 is provided on the outer side wall of the air guide portion 50, and the baffle 60 is located outside the mixture outlet 502. Furthermore, the air guide portion 50 and the baffle 60 are an integrally formed structure.

[0076] Specifically, the air guide portion 50 and the barrier portion 60 are formed by bending a plate-like structure. The plate-like structure includes a first plate body and a second plate body connected to each other, and the first plate body and the second plate body are both rectangular plate-like structures. The second plate body is connected to a side wall of the first plate body in the length direction, and the two ends of the first plate body in the length direction respectively protrude outward from the second plate body. After the first plate body is bent, the bottom wall, the first side wall and the third side wall of the air guide portion 50 are formed accordingly. After the second plate body is bent, the main part of the second plate body forms the second side wall of the air guide portion 50, and the two ends of the second plate body in the length direction respectively protrude outward from the first side wall and the third side wall, and the two ends of the second plate body in the length direction are bent toward the direction of the first side wall and the third side wall, and form two barrier portions 60 respectively.

[0077] like Figure 2 、 Figure 8 and Figure 10 As shown, a positioning portion 70 is further provided in the gas-liquid separation chamber 101, and the positioning portion 70 is positioned and matched with the gas outlet pipe 30. This arrangement can ensure that the gas outlet pipe 30 is fixed in a position inside the gas-liquid separator, preventing the gas outlet pipe 30 from being displaced or damaged due to vibration or fluid impact during system operation.

[0078] In the embodiment of this solution, the positioning portion 70 includes a positioning plate 71, which is disposed at the bottom of the gas-liquid separation chamber 101. A mounting space is defined 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 extends through the positioning plate 71. At least a portion of the second section 32 is embedded within the mounting space through the positioning hole 7101, and the positioning hole 7101 is positioned and engaged with the second section 32. The mounting 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, effectively position the second section 32 of the gas outlet pipe 30. This arrangement provides a simple structure and facilitates assembly.

[0079] Furthermore, the positioning portion 70 also includes an annular plate 72 , which is annularly arranged at the outer edge of the positioning plate 71 and located at the bottom of the positioning plate 71 . The positioning portion 70 is press-fitted with the bottom end of the shell 11 through the annular plate 72 .

[0080] Specifically, the outer side wall of the annular plate 72 abuts against the inner side wall of the housing 11. The bottom end cover 13 has an upper flange that bends upward, and the bottom end of the housing 11 is inserted into the upper flange.

[0081] Furthermore, an oil return port 3201 is provided on the second section 32 and is located within the installation space. The gas-liquid separator also includes a filter unit 80, which is located at the oil return port 3201. The height of the oil return port 3201 and the filter unit 80 is no higher than the height of the positioning plate 71. This arrangement facilitates the return of oil within the gas-liquid separation chamber 101 to the air outlet pipe 30 through the oil return port 3201. The filter unit 80 is used to filter the oil to ensure its cleanliness and prevent contaminants from entering the system.

[0082] like Figure 1 As shown, further, the gas-liquid separator also includes a mounting portion 90, which is arranged on the outer surface of the bottom of the main body 10. The center line of the mounting portion 90, the center axis of the main body 10 and the axis of the air outlet 3301 coincide with each other. In the embodiment of this scheme, the mounting portion 90 includes a mounting screw. By setting the mounting portion 90, it is easy to install the gas-liquid separator on other components. In addition, when the air outlet pipe 30 discharges air, resonance may be caused. The above-mentioned setting can ensure that the overall gas-liquid separator has better stability in the vertical direction and reduce the resonance phenomenon.

[0083] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0084] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0085] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0086] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0087] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0088] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A gas-liquid separator, characterized in that: The gas-liquid separator comprises: The main body (10) has a gas-liquid separation chamber (101); a mixture inlet pipe (20) communicating with the gas-liquid separation chamber (101); an air outlet pipe (30) comprising a first section (31), a second section (32) and a third section (33) which are interconnected, wherein 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 in the gas-liquid separation chamber (101), the top end of the first section (31) is provided with an air inlet (3101), an end of the third section (33) away from the second section (32) forms an air outlet (3301), the air outlet (3301) is communicated with the outside of the gas-liquid separation chamber (101), the first section (31), the second section (32) and the third section (33) form an enclosed space (3001), and along the axial direction of the main body (10), the cross-sectional area of ​​the top end of the enclosed space (3001) is smaller than the cross-sectional area of ​​the bottom end of the enclosed space (3001); The heat exchange portion (40) comprises a central heat exchange section (41) and a peripheral heat exchange section (42) located in the gas-liquid separation chamber (101), wherein the central heat exchange section (41) is arranged in the enclosed space (3001), and the peripheral heat exchange section (42) is located outside the enclosed 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), and two peripheral heat exchange sections (42) are provided. 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 middle heat exchange section (41) comprises: A first connecting section (411) is arranged in the enclosed space (3001), with two ends of the first connecting section (411) located on both sides of the enclosed space (3001), and the first connecting section (411) includes a first arc section or a first bent section; Two vertical sections (412) are both extended 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), the second connecting sections (413) are arranged corresponding to the vertical sections (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), and the second connecting section (413) includes a second arc section or a second bent section.

4. The gas-liquid separator according to claim 3, characterized in that In a plane perpendicular to the axial direction of the gas-liquid separator, the projections of the two second connecting segments (413) are respectively located on both sides of the projection of the first connecting segment (411), and the angles between the projections of each second connecting segment (413) and the projection of the first connecting segment (411) are acute angles, and 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 claim 1, characterized in that The third section (33) comprises a first vertical pipe section (331), a transition pipe section (332) and a second vertical pipe section (333) which are connected in sequence, wherein the first vertical pipe section (331) is connected to the second section (32), and the second vertical pipe section (333) is connected to the air 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).

7. The gas-liquid separator according to claim 1, 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 comprises: An air guide portion (50) is arranged in the gas-liquid separation chamber (101), the air guide portion (50) having an air guide chamber (501), the top of the air guide chamber (501) being in communication with the first mounting port (1001), the side of the air guide chamber (501) having a mixture outlet (502), the mixture outlet (502) facing away from the air inlet (3101); and the height of the air inlet (3101) being higher than the lowest height of the mixture outlet (502).

8. The gas-liquid separator according to claim 1, characterized in that The gas-liquid separator comprises a mixture feed portion, one end of the mixture feed portion is located in the gas-liquid separation chamber (101) and is in communication with the gas-liquid separation chamber (101), the other end of the mixture feed portion is located outside the body portion (10) and forms the mixture inlet pipe (20), the two ends of the mixture feed portion are in communication with each other, and one end of the mixture feed portion located in the gas-liquid separation chamber is provided with a mixture outlet (502), and the gas-liquid separator further comprises: The baffle (60) is arranged in the gas-liquid separation chamber (101), and the mixture outlet (502) and the air inlet (3101) are respectively located on both sides of the baffle (60).

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

10. The gas-liquid separator according to claim 9, characterized in that An oil return port (3201) communicating with the gas-liquid separation chamber (101) is provided at the bottom of the gas outlet pipe (30); the oil return port (3201) is provided on the second section (32), and the oil return port (3201) is located within the installation space; the gas-liquid separator further comprises a filter portion (80), and the filter portion (80) is provided at the oil return port (3201).

11. The gas-liquid separator according to claim 1, characterized in that: The gas-liquid separator also includes: The mounting portion (90) is arranged on the outer surface of the bottom of the main body (10), and the center line of the mounting portion (90), the center axis of the main body (10) and the axis of the air outlet (3301) coincide with each other.

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