Gas-liquid separator

Abstract

A gas-liquid separator comprises a shell and a partition plate, the shell is provided with an inner cavity and an outlet, the partition plate is located in the inner cavity, and the partition plate at least divides the inner cavity into a gas separation cavity and a gas channel cavity; the air channel cavity comprises a first air cavity and a second air cavity, the first air cavity is communicated with an outlet of the air-liquid separator, the second air cavity is communicated with the air separation cavity, and the volume of the second air cavity is larger than that of the first air cavity, so that when external air pressure suddenly drops, the second air cavity can play a buffering role, and the dropping speed of pressure can be reduced.

Description

Technical Field

[0001] The present application relates to the field of thermal management technology, and in particular to a gas-liquid separator. Background Art

[0002] The gas-liquid separator is one of the important accessories in the thermal management system. The gas-liquid separator usually sets the air outlet pipe and the liquid storage chamber in the same chamber. In this way, when the pressure suddenly drops, the air pressure in the air outlet pipe drops instantly, causing the air pressure in the liquid storage chamber to drop as well. The sudden drop in pressure will cause the liquid refrigerant to boil and produce a large amount of foam. If it enters the compressor, it will cause liquid hammer, which will affect and reduce the life of the compressor. Utility Model Content

[0003] The purpose of the present application is to provide a gas-liquid separator, which is beneficial to improving the safety performance of the compressor.

[0004] To achieve the above purpose, one embodiment of the present application adopts the following technical solution:

[0005] A gas-liquid separator comprises a shell and a partition. The shell has an inner cavity and an outlet, the partition is located in the inner cavity, and the partition divides the inner cavity into at least a gas separation cavity and an airway cavity; the airway cavity comprises a first air cavity and a second air cavity, the first air cavity is connected to the outlet, the second air cavity is connected to the gas separation cavity, and the volume of the second air cavity is greater than the volume of the first air cavity.

[0006] One embodiment of the present application provides a gas-liquid separator, wherein the first air cavity is connected to the outlet, the second air cavity is connected to the gas separation cavity, and the volume of the second air cavity is greater than that of the first air cavity, that is, under normal conditions, the pressure drop of the first air cavity is greater than the pressure drop of the second air cavity. Since the outlet is connected to an external compressor device, if the external compressor device is suddenly started, the pressure at the outlet will drop suddenly, and the sudden drop in pressure will increase the risk of boiling of the liquid refrigerant and generating a large amount of foam, thereby causing liquid hammer. In the present application, the volume of the second air cavity is greater than that of the first air cavity, so that when the pressure at the outlet drops suddenly, the second air cavity can act as a buffer, slowing down the rate of pressure drop, and even if there is a situation where the liquid refrigerant vaporizes, its vaporization rate will slow down, thereby reducing the amount of foam generated, thereby reducing the possibility of foam entering the external compressor device. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the three-dimensional structure of the gas-liquid separator in this application;

[0008] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the gas-liquid separator;

[0009] Figure 3 yes Figure 2 A cross-sectional view of a gas-liquid separator from a first perspective;

[0010] Figure 4 yes Figure 2 a cross-sectional view of the gas-liquid separator from a second perspective;

[0011] Figure 5 yes Figure 2 Schematic diagram of the combination of the middle support partition, the first gas partition partition, the second gas partition partition, the third gas partition partition and the diversion partition. DETAILED DESCRIPTION

[0012] The following is combined with Figures 1 to 5 The utility model is further described with specific embodiments. In order to fully understand the utility model, many specific details are mentioned in the following detailed description. However, those skilled in the art should understand that the specific components, devices and features illustrated in the drawings and described herein are only exemplary and should not be regarded as limiting.

[0013] Figures 1 to 5 An embodiment of a gas-liquid separator is illustrated, the gas-liquid separator includes a shell 1 and a partition 2, the shell 1 is provided with an inner cavity 3 and an outlet 16, the partition 2 is located in the inner cavity 3, the partition 2 divides the inner cavity 3 into at least a gas separation cavity 11 and an airway cavity 14, specifically, the partition 2 divides the inner cavity 3 into a drying cavity 13, a diversion cavity 12, a gas separation cavity 11 and an airway cavity 14, the airway cavity 14 includes a first air cavity 142 and a second air cavity 141, the first air cavity 142 is connected to the outlet 16, the second air cavity 141 is connected to the gas separation cavity 11, and the volume of the second air cavity 141 is greater than the volume of the first air cavity 142.

[0014] It should be noted that, in order to improve the space utilization of the gas-liquid separator, the height and width of the first gas cavity 142 and the second gas cavity 141 are usually the same. Figure 1 In the Z direction, the width refers to Figure 1In the X direction, it can be understood that the larger the chamber volume is, the larger the average cross-sectional area of ​​the flow is. When the fluid reaches a stable state, the larger the average cross-sectional area is, the smaller the pressure drop is, that is, under normal conditions, the pressure drop of the first air cavity 142 is greater than the pressure drop of the second air cavity 141. If the first air cavity 142 with a smaller volume is regarded as a pipe with flow resistance, and the second air cavity 141 is regarded as a reservoir, if the reservoir is directly connected to the water pump without passing through a pipe, the pumping speed is faster, and the water is reduced relatively quickly, which is equivalent to a rapid drop in air pressure. The pipe behind the reservoir is connected to other reservoirs. Compared with the pipe directly connected to the water pump, the water in the pipe flows slower. It can be understood that the flow resistance is relatively small, and the water in other reservoirs is more easily pumped to the reservoir on this side, which has a greater impact on other reservoirs; on the contrary, the water pump is connected to the reservoir through a pipe with resistance. At this time, the flow rate in the pipe is faster and the flow resistance is larger, and the corresponding pumping pressure of the reservoir decreases, the pumping speed also slows down accordingly, and the pumping effect of the reservoir on the gas reservoir is also slowed down. It can be seen from this that in order to alleviate the rapid drop in air pressure caused by the sudden start-up of the external compressor equipment, the first air cavity 142 is designed to be as small as possible, and the second air cavity 141 is designed to be as large as possible.

[0015] Furthermore, if the air cavity with a larger volume is far away from the external compressor equipment, the buffering effect will be better, but considering the air flow channel required by the gas-liquid separator structure, the first air cavity 142 and the second air cavity 141 should be set within a reasonable range. The first air cavity 142 can be designed in size according to the flow channel requirements, and the second air cavity 141 is as large as possible within the allowable range of the gas-liquid separator space, so that when the external air pressure suddenly drops, the second air cavity 141 can play a role in slowing down the pressure drop. Even if there is a situation where the liquid refrigerant vaporizes, its vaporization speed will slow down, thereby reducing the amount of foam generated. Even if some foam enters the second air cavity 141, the foam can sink to the bottom under the action of gravity, reducing the possibility of entering the external compressor equipment, thereby avoiding or reducing the liquid hammer phenomenon to a certain extent.

[0016] It should be noted that the terms "first", "second", "third" and "fourth" in this specification are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0017] Please also read Figures 1 to 5 The inner cavity 3 includes an air inlet 143 and an air outlet 144. The air inlet 143 is connected to the gas chamber 11 and the second air chamber 141. The air outlet 144 is connected to the second air chamber 141 and the first air chamber 142. There is a height difference between the air inlet 143 and the air outlet 144. In this embodiment, the height difference refers to the height difference along the Figure 1It can be understood that there is a height difference between the air inlet 143 and the air outlet 144. No matter the air inlet 143 is located at the upper end or the air outlet 144 is located at the upper end, as long as there is a height difference between the two, the effect of the gas-liquid separator in buffering the sudden pressure drop will be further enhanced.

[0018] Specifically, in this embodiment, the height difference between the air inlet 143 and the outlet 16 is smaller than the height difference between the air outlet 144 and the outlet 16. Specifically, the height direction of the gas-liquid separator is defined as the first direction (eg Figure 1 (as shown in the Z direction), along the first direction, the air inlet 143 is located at the upper end of the second air cavity 141, the air outlet 144 is located at the lower end of the second air cavity 141, and the outlet 16 is located at the upper end of the first air cavity 142. It should be explained that after the fluid enters the second air cavity 141 from the air inlet 143, it needs to flow downward for a distance to reach the air outlet 144, and then enter the first air cavity 142 through the air outlet 144. After the fluid enters the first air cavity 142, it flows upward for a distance to reach the outlet 16 before leaving the gas-liquid separator. In this embodiment, the airway cavity 14 is arranged as a U-shaped channel, which can buffer the speed of reducing the air pressure at the outlet 16 on the one hand, and this structure when the airway cavity 14 can further enhance the gas-liquid separation effect and extend the service life of the external compressor equipment.

[0019] It should be noted that the directional words such as up, down, left, right, front and back mentioned in this specification are based on the directions in the drawings of the specification and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0020] In this embodiment, the area of ​​the flow cross section of the gas outlet 144 is greater than the area of ​​the flow cross section of the gas inlet 143; the width direction of the gas-liquid separator is defined as the second direction (eg Figure 1(shown in the X direction), along the second direction, the width of the air outlet 144 is greater than the width of the air inlet 143. It can be understood that the area of ​​the flow cross section of the air outlet 144 is greater than the area of ​​the flow cross section of the air inlet 143, so that under the same pressure difference, the fluid flow rate of the air outlet 144 is greater than the fluid flow rate at the air inlet 143. If the second air cavity 141 and the gas separation cavity 11 have the same volume, the speed at which the air pressure in the second air cavity 141 drops will be faster than the speed at which the air pressure in the gas separation cavity 11 drops, so that the change in the air pressure inside the gas separation cavity 11 can be slowed down. Usually, the flow cross section area of ​​the air outlet 144 needs to be designed according to the size of the flow channel. The smaller the air inlet 143, the greater the pressure difference between the second air cavity 141 and the gas separation cavity 11. Reducing the flow cross section area of ​​the air inlet 143 can reduce the foam generation rate and thus reduce the risk of liquid hammer. In addition, it needs to be explained that the flow cross section refers to a cross-sectional object used to measure the flow characteristics of water bodies in hydraulic experiments. The cross-sectional object is a cross-section of water flowing through a water body and can be regarded as a part of the water flow. It can be used to measure the speed, flow rate and depth of the water body.

[0021] refer to Figure 3 The partition 2 includes a supporting partition 21, which is arranged along the horizontal plane. The supporting partition 21 divides the gas separation chamber 11 into an air chamber 18 and a liquid chamber 19. Along the first direction, the position of the air chamber 18 is higher than the position of the liquid chamber 19. The first air chamber 142 is adjacent to the liquid chamber 19. The partition 2 includes a partition plate 222. The first air chamber 142 and the liquid chamber 19 are separated by the partition plate 222. The partition plate 222 is provided with an oil return hole 145. The oil return hole 145 is located at the lower end of the first air chamber 142, and the oil return hole 145 is connected to the liquid chamber 19. This design can realize the oil return function without setting up a separate oil return channel. The structure is simple and the production cost is lower. An oil drain hole 146 can also be set at the bottom of the shell 1 to discharge excess oil in the airway chamber 14.

[0022] The partition 2 includes a first gas partition 23 and a second gas partition 29, and the length direction of the gas-liquid separator is defined as the third direction. Along the third direction, the first gas partition 23 and the second gas partition 29 are arranged at intervals, the shell 1 has a gas inlet 15, the first gas partition 23 has a connecting port 231, and the second gas partition 29 has a gas outlet 17, and the connecting port 231 is respectively connected to the gas inlet 15 and the gas outlet 17; along the second direction, the connecting port 231 is staggered with at least one of the gas inlet 15 and the gas outlet 17. Specifically, the gas inlet 15 is arranged opposite to the gas outlet 17, and the connecting port 231 is staggered with the gas inlet 15 and the gas outlet 17. It should be noted that the single-phase or two-phase fluid enters from the gas separator inlet 15. Since the gas separator inlet 15 and the connecting port 231 are staggered, the single-phase or two-phase fluid will hit the first gas separator 23 after entering the gas separator chamber 11, thereby changing the flow direction of the fluid and being discharged from the connecting port 231. Since the connecting port 231 and the gas separator outlet 17 are staggered, the single-phase or two-phase fluid will hit the second gas separator 29 after entering the gas separator chamber 11 from the connecting port 231, thereby changing the flow direction of the fluid again and being discharged from the gas separator outlet 17. After the fluid enters the gas separation chamber 11 from the gas separation inlet 15, the fluid changes its flow direction at least once and then leaves the gas separation chamber 11 from the gas separation outlet 17. After the fluid flows out of the gas separation outlet 17, it enters the airway chamber 14. The airway chamber 14 includes a first air cavity 142 and a second air cavity 141. The first air cavity 142 is connected to the outlet 16 of the gas-liquid separator, and the second air cavity 141 is connected to the gas separation chamber 11. The volume of the second air cavity 141 is greater than that of the first air cavity 142. In this way, the second air cavity can slow down the change of air pressure. The volume of the first air cavity 142 is smaller than that of the second air cavity 141, so that the air pressure changes more slowly and the liquid shock prevention effect is better.

[0023] The partition 2 includes a diverter partition 25, and the inner cavity 3 includes a diverter cavity 12. The diverter cavity 12 is connected to the gas separation cavity 11 through the gas separation outlet 17; the diverter partition 25 is located in the diverter cavity 12, and the diverter partition 25 divides the diverter cavity 12 into at least two flow channels. The fluid flows out from the gas separation outlet 17 and enters the diverter cavity 12. The two flow channels can reduce the pressure drop of the gas-liquid separator and reduce energy consumption. The diverter partition 25 is located on the side of the gas separation outlet 17 close to the air inlet 143. The direction of the gas separation outlet 17 determines the setting of the diverter partition 25. If the fluid of the gas separation outlet 17 flows out along the third direction, the diverter partition 25 is arranged along the third direction, so that the fluid with high inertia and high humidity will continue to flow along the third direction, and the fluid with high dryness and low inertia will turn to flow in the second direction. The fluid with high dryness can quickly reach the airway cavity 14, and the fluid with high humidity will enter the airway cavity 14 after the gas-liquid separation action.

[0024] Please refer to Figure 1, define the Z-axis direction as the first direction, the X-axis direction as the second direction, the Y-axis direction as the third direction, the plane where the X-axis and the Y-axis are located is a horizontal plane, the partition 2 includes a side plate 22 and a supporting partition 21, the side plate 22 is arranged along a direction parallel to the Z-axis, and the supporting partition 21 is arranged along a direction perpendicular to the Z-axis.

[0025] The housing 1 includes a first side wall 27, a second side wall 277, and a second partition 28, and the second partition 28 has an angle with the first side wall 27 and the second side wall 277. Specifically, the first side wall 27 is arranged along the third direction, the second side wall 28 is arranged along the second direction, the first side wall, the second side wall and the second partition are aligned, and the second partition is perpendicular to the first side wall 27 and the second side wall 277.

[0026] The gas-liquid separator also includes an elastic clip 30, the partition 2 includes a side plate 22, the side plate 22 includes a limiting wall 31, the elastic clip 30 is located at least one of the first gas partition 23, the second gas partition 29 and the third gas partition 32, and the elastic clip 30 is clamped on the limiting wall 31. The diverter partition 25 designed in this way has a diverting effect, and the gas-liquid separation effect is better and the pressure drop is lower. It is convenient to clamp and fix it with the elastic clip 30. The elastic clip 30 can be designed to be C-shaped and have a certain elasticity. The limiting wall 31 can be inserted into the notch of the C-shape. The diverter partition 25 can be integrally formed by injection molding, or it can be formed by hot extrusion or hot forging of aluminum alloy. Such a design has low cost and is easy to install. The C-shaped elastic clip 30 can be designed to be a long strip along the vertical direction, so that it has a certain turbulence effect, so that the gas separation effect is better.

[0027] Please refer to Figures 2 to 5The partition 2 includes a first partition 26 and a third gas partition 32. The third gas partition 32 is closer to the second gas partition 29 relative to the first partition 26. The third gas partition 32 has a first flow channel opening 321 and a second flow channel opening 322. The first flow channel opening 321 is arranged opposite to the gas separation outlet 17. The diverter partition 25 is located between the first flow channel opening 321 and the second flow channel opening 322. The diverter partition 25 includes a first portion 251 and a second portion 252. The first portion 251 extends from the third gas partition 32 toward the second gas partition 29, and the second portion 252 extends from the third gas partition 32 toward the first partition 26. It should be noted that when the fluid flows out from the gas separation outlet 17, the fluid with high dryness and small inertia will flow into the diversion cavity 12 near the air inlet 143 from the gap between the first part 251 and the second gas separation partition 29, and the fluid with high dryness and small inertia will flow along the inner wall of the second gas separation partition 29. After hitting the second side wall 277, this part of the fluid will turn and be discharged into the second air cavity 141 through the air inlet 143. It can be understood that the fluid with high humidity and high inertia flows in from the gas separation outlet 17 and is discharged through the first flow channel opening 321. After hitting the first partition plate 26, this part of the fluid makes the first turn and flows along the inner wall of the first partition plate 26. After hitting the first side wall 27, it makes the second turn and flows along the inner wall of the first side wall 27. After hitting the limiting wall 31, it makes the third turn and flows along the inner wall of the limiting wall 31. After hitting the second part 252, it makes the fourth turn and flows into the diversion cavity 12 from the second flow channel opening 322. After hitting the second gas separation partition 29, it makes the fifth turn and flows along the second gas separation partition 29. After hitting the second side wall 277, it makes the sixth turn and is discharged from the air inlet 143 into the second air cavity 141. Such a structural arrangement allows the fluid to undergo six turns, which can further enhance the gas-liquid separation effect. The gas separation chamber 11 and the airway chamber 14 can be arranged along the second direction, and the gas separation chamber 11, the diversion chamber 12 and the drying chamber 13 can be arranged along the third direction. The fluid can enter the diversion chamber 12 through the gas separation chamber 11, pass through the drying chamber 13, and then flow out of the airway chamber 14. It can be understood that the fluid can also directly enter the airway chamber 14 from the diversion chamber 12 and flow out.

[0028] The first gas separation partition 23 is located in the gas separation chamber 11, and the first gas separation partition 23 is arranged opposite to the gas separation inlet 15, that is, the first gas separation partition 23 is located in the inertial flow direction of the fluid entering from the gas separation inlet 15, and the first gas separation partition 23 changes the flow direction of the fluid. Such a design can have a better gas-liquid separation effect. In other embodiments, the gas-liquid separator also includes a spoiler 24, the spoiler 24 is located on the gas separation partition 23, the spoiler 24 and the gas separation partition 23 are a split structure or an integrated structure, and the spoiler 24 has an arc structure bent in the direction away from the connecting port 231. The arc structure can effectively improve the gas-liquid separation efficiency of the gas-liquid two-phase refrigerant, so that the gas-liquid separation is more sufficient. It can be understood that the spoiler 24 can also be arranged at the opening of one or more of the gas separation outlet 17, the first flow channel port 321 and the second flow channel port 322, as long as it can play a certain spoiler effect and improve the gas-liquid separation effect.

[0029] The flow dividing chamber 12 is separated into a long flow channel and a short flow channel by the partition 2 and the flow dividing partition 25. The long flow channel has more turns than the short flow channel, and the long flow channel has more and gentler turns than the short flow channel. The long flow channel is longer, and the gas-liquid separation in the long flow channel is more complete; the long flow channel has more and gentler turns than the short flow channel, so that more liquid phase fluid enters the long flow channel, and the short flow channel turns more rapidly, but the gas phase fluid has a lower density and turns more easily, so more gas phase fluid enters the short flow channel, and the gas phase fluid can reduce the pressure drop of the system.

[0030] The fluid enters the short flow channel and makes a turn once before leaving the diverting chamber 12 and reaching the air inlet 143. Such a design structure is simple and practical. After the fluid flows out of the gas separation outlet 17, it flows along the third direction. A short flow channel can be set along the second direction, so that the gas with higher dryness can change from longitudinal flow to lateral flow, which can enhance the gas-liquid separation effect. The air inlet 143 of the airway chamber 14 is arranged along the third direction, and the fluid can leave the diverting chamber 12 and enter the airway chamber 14 after making a second turn.

[0031] Please refer to Figure 2 , the direction of the arrow is the flow direction of the two-phase or single-phase fluid. The fluid with large inertia enters the long flow channel and makes six turns before leaving the diverter chamber 12 and arriving at the air inlet 143. In this embodiment, each turn is ninety degrees. This design can arrange more bend structures in a limited space, thereby improving the gas-liquid separation effect. The first turn can be the first partition 26 set between the diverter chamber 12 and the drying chamber 13. After the first turn, the fluid changes from longitudinal to transverse flow, and changes its flow direction to longitudinal after reaching the first side wall 27 of the shell 1. A second partition 28 is set in this direction. The fluid is blocked by the second partition 28 and begins to flow transversely again. After reaching the second part 252, it changes its direction again to longitudinal flow, and then flows transversely under the action of the second air-gas dividing partition 29. At this time, the fluid flow position is the same as that of the short flow channel. After hitting the second side wall 277, it turns again to enter the airway cavity 14.

[0032] The width of the air outlet 144 is greater than that of the air inlet 143. On the one hand, the smaller the width of the air inlet 143, the smaller the area of ​​the flow cross-section of the air inlet 143, and the greater the pressure difference between the second air cavity 141 and the gas separation cavity 11. This design can make the air pressure drop buffering effect of the second air cavity 141 better and can reduce the risk of liquid hammer. On the other hand, the air inlet 143 is narrow and is arranged in the middle area. There is a certain distance between the air inlet 143 and the second side wall 277. This arrangement of the air inlet 143 can block part of the fluid with large inertia flowing along the inner wall of the second side wall 277. This part of the fluid with low dryness enters the compressor, which also has certain risks. Reducing the flow of this part of gas into the compressor can extend the life of the compressor.

[0033] Furthermore, the housing 1 includes a sealing cover 131, a drying bag 133, a hook 134, a suspension 135 and a support frame 16. The hook 134 is located on the sealing cover 131, the drying bag 133 is located on the suspension 135, the suspension 135 is detachably connected to the hook 134, and the support frame 136 is located on the periphery of the suspension 135. The support frame 136 can radially limit the suspension 135. The drying bag 133 is usually made of molecular sieves, and after absorbing a certain amount of moisture, it will become invalid and need to be replaced. The sealing cover 131 can be opened, which makes it more convenient to replace the drying bag.

[0034] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that those skilled in the art can still modify or make equivalent substitutions to the present invention, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A gas-liquid separator, characterized in that: The invention comprises a shell (1) and a partition (2), wherein the shell (1) has an inner cavity (3) and an outlet (16), the partition (2) is located in the inner cavity (3), and the partition (2) divides the inner cavity (3) into at least an air separation cavity (11) and an airway cavity (14); The airway cavity (14) comprises a first air cavity (142) and a second air cavity (141); the first air cavity (142) is connected to the outlet (16); the second air cavity (141) is connected to the gas separation cavity (11); and the volume of the second air cavity (141) is greater than the volume of the first air cavity (142).

2. The gas-liquid separator according to claim 1, characterized in that: The inner cavity (3) comprises an air inlet (143) and an air outlet (144); the air inlet (143) is connected to the gas separation cavity (11) and the second air cavity (141); the air outlet (144) is connected to the second air cavity (141) and the first air cavity (142); and there is a height difference between the air inlet (143) and the air outlet (144).

3. The gas-liquid separator according to claim 2, characterized in that: The height difference between the air inlet (143) and the outlet (16) is smaller than the height difference between the air outlet (144) and the outlet (16).

4. The gas-liquid separator according to claim 3, characterized in that: The height direction of the gas-liquid separator is defined as a first direction. Along the first direction, the air inlet (143) is located at the upper end of the second air cavity (141), the air outlet (144) is located at the lower end of the second air cavity (141), and the outlet (16) is located at the upper end of the first air cavity (142).

5. The gas-liquid separator according to any one of claims 2 to 4, characterized in that: The area of ​​the flow cross section of the air outlet (144) is greater than the area of ​​the flow cross section of the air inlet (143).

6. The gas-liquid separator according to any one of claims 2 to 4, characterized in that: The width direction of the gas-liquid separator is defined as a second direction, and along the second direction, the width of the gas outlet (144) is greater than the width of the gas inlet (143).

7. The gas-liquid separator according to claim 5, characterized in that: The width direction of the gas-liquid separator is defined as a second direction, and along the second direction, the width of the gas outlet (144) is greater than the width of the gas inlet (143).

8. The gas-liquid separator according to claim 4, characterized in that: The partition (2) comprises a supporting partition (21), wherein the supporting partition (21) divides the gas separation chamber (11) into an air chamber (18) and a liquid chamber (19); the partition (2) comprises a partition plate (222), wherein the first air chamber (142) and the liquid chamber (19) are separated by the partition plate (222), and the partition plate (222) is provided with an oil return hole (145), wherein the oil return hole (145) is located at the lower end of the first air chamber (142) along the first direction, and the oil return hole (145) is connected to the liquid chamber (19).

9. The gas-liquid separator according to claim 6, characterized in that: The partition (2) comprises a first gas separation partition (23) and a second gas separation partition (29), the shell (1) has a gas separation inlet (15), the first gas separation partition (23) has a communication port (231), the second gas separation partition (29) has a gas separation outlet (17), and the communication port (231) is respectively connected to the gas separation inlet (15) and the gas separation outlet (17); Along the second direction, the communication port (231) is arranged offset from at least one of the gas separation inlet (15) and the gas separation outlet (17).

10. The gas-liquid separator according to claim 7, characterized in that: The partition (2) comprises a first gas separation partition (23) and a second gas separation partition (29), the shell (1) has a gas separation inlet (15), the first gas separation partition (23) has a communication port (231), the second gas separation partition (29) has a gas separation outlet (17), and the communication port (231) is respectively connected to the gas separation inlet (15) and the gas separation outlet (17); Along the second direction, the communication port (231) is arranged offset from at least one of the gas separation inlet (15) and the gas separation outlet (17).

11. The gas-liquid separator according to claim 9 or 10, characterized in that: The partition (2) comprises a flow dividing partition (25), the inner cavity (3) comprises a flow dividing cavity (12), and the flow dividing cavity (12) is connected to the gas dividing cavity (11) through the gas dividing outlet (17); The flow dividing partition (25) is located in the flow dividing chamber (12), and the flow dividing partition (25) divides the flow dividing chamber (12) into at least two flow channels.

12. The gas-liquid separator according to claim 11, characterized in that: The partition (2) comprises a first partition (26) and a third gas separation partition (32); the third gas separation partition (32) is closer to the second gas separation partition (29) relative to the first partition (26); the third gas separation partition (32) has a first flow channel opening (321) and a second flow channel opening (322); the first flow channel opening (321) is arranged opposite to the gas separation outlet (17); and the flow dividing partition (25) is located between the first flow channel opening (321) and the second flow channel opening (322); The flow dividing baffle (25) comprises a first portion (251) and a second portion (252), wherein the first portion (251) extends from the third gas dividing baffle (32) toward the second gas dividing baffle (29), and the second portion (252) extends from the third gas dividing baffle (32) toward the first baffle (26).

13. The gas-liquid separator according to claim 12, characterized in that: The gas-liquid separator also includes an elastic clip (30), the partition (2) includes a side plate (22), the side plate (22) includes a limiting wall (31), the elastic clip (30) is located on at least one of the first gas partition plate (23), the second gas partition plate (29) and the third gas partition plate (32), and the elastic clip (30) is clamped on the limiting wall (31).

14. The gas-liquid separator according to any one of claims 1, 2, 3, 4, 7, 8, 9, 10, 12 and 13, characterized in that: The shell (1) comprises a first side wall (27), a second side wall (277) and a second partition plate (28); the second partition plate (28) and the first side wall (27) and the second side wall (277) all have included angles.

15. The gas-liquid separator according to claim 5, characterized in that: The shell (1) comprises a first side wall (27), a second side wall (277) and a second partition plate (28); the second partition plate (28) and the first side wall (27) and the second side wall (277) all have included angles.

16. The gas-liquid separator according to claim 6, characterized in that: The shell (1) comprises a first side wall (27), a second side wall (277) and a second partition plate (28); the second partition plate (28) and the first side wall (27) and the second side wall (277) all have included angles.

17. The gas-liquid separator according to claim 11, characterized in that: The shell (1) comprises a first side wall (27), a second side wall (277) and a second partition plate (28); the second partition plate (28) and the first side wall (27) and the second side wall (277) all have included angles.

18. The gas-liquid separator according to claim 1, characterized in that: The inner cavity (3) comprises an air inlet (143) and an air outlet (144); the air inlet (143) is connected to the gas separation cavity (11) and the second gas cavity (141); there is a height difference between the air inlet (143) and the air outlet (144); the air outlet (144) is connected to the second gas cavity (141) and the first gas cavity (142); the height difference between the air inlet (143) and the outlet (16) is smaller than the height difference between the air outlet (144) and the outlet (16); the height direction of the gas-liquid separator is defined as a first direction, and along the first direction, the air inlet (143) ) is located at the upper end of the second air cavity (141), the air outlet (144) is located at the lower end of the second air cavity (141), and the outlet (16) is located at the upper end of the first air cavity (142); the area of ​​the flow cross section of the air outlet (144) is greater than the area of ​​the flow cross section of the air inlet (143); the width direction of the gas-liquid separator is defined as the second direction, and along the second direction, the width of the air outlet (144) is greater than the width of the air inlet (143); the partition (2) includes a supporting partition (21), and the supporting partition (21) separates the gas separation cavity (11) into an air cavity (18) and a liquid cavity ( 19), the partition (2) comprises a partition plate (222), the first air cavity (142) and the liquid cavity (19) are separated by the partition plate (222), the partition plate (222) is provided with an oil return hole (145), along the first direction, the oil return hole (145) is located at the lower end of the first air cavity (142), and the oil return hole (145) is connected with the liquid cavity (19); the partition (2) comprises a first air partition plate (23) and a second air partition plate (29), the shell (1) has an air separator inlet (15), the first air partition plate (23) has a connecting port (231), and the second air partition plate (29) has an air separator. The gas separator outlet (17) is connected to the gas separator inlet (15) and the gas separator outlet (17), and the communication port (231) is respectively connected to the gas separator inlet (15) and the gas separator outlet (17); along the second direction, the communication port (231) is staggered with at least one of the gas separator inlet (15) and the gas separator outlet (17); the partition (2) comprises a flow dividing partition (25), the inner cavity (3) comprises a flow dividing chamber (12), and the flow dividing chamber (12) is connected to the gas separator chamber (11) through the gas separator outlet (17); the flow dividing partition (25) is located in the flow dividing chamber (12), and the flow dividing partition (25) divides the flow dividing chamber (12) into at least two flow channels;The partition (2) comprises a first partition (26) and a third gas partition (32), the third gas partition (32) being closer to the second gas partition (29) relative to the first partition (26), the third gas partition (32) having a first flow channel opening (321) and a second flow channel opening (322), the first flow channel opening (321) being arranged opposite to the gas separation outlet (17), the flow splitting partition (25) being located between the first flow channel opening (321) and the second flow channel opening (322); the flow splitting partition (25) comprising a first portion (251) and a second portion (252), the first portion (251) extending from the third gas partition (32) toward the second gas partition (29), the The second portion (252) extends from the third gas partition (32) toward the first partition (26); the gas-liquid separator further comprises an elastic clip (30); the partition (2) comprises a side plate (22); the side plate (22) comprises a limiting wall (31); the elastic clip (30) is located at least one of the first gas partition (23), the second gas partition (29) and the third gas partition (32); the elastic clip (30) is clamped on the limiting wall (31); the shell (1) comprises a first side wall (27), a second side wall (277) and a second partition (28); the second partition (28) and the first side wall (27) and the second side wall (277) all have an included angle. ;

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