Gas-liquid separator

Abstract

A gas-liquid separator (100). The gas-liquid separator (100) comprises a cylinder body (10), at least one gas inlet pipe (20), and gas outlet pipes (301) arranged at intervals; the cylinder body (10) is provided with a gas inlet (101) and a plurality of gas outlets (102), and the gas inlet (101) and the plurality of gas outlets (102) are arranged at intervals; the gas inlet pipe (20) is mounted at the corresponding gas inlet (101) and extends into the cylinder body (10) from the gas inlet (101); each gas outlet pipe (301) is mounted at the corresponding gas outlet (102) and extends into the cylinder body (10) from the gas outlet (102); inlet ports of the gas outlet pipes (301) are arranged close to the top of the cylinder body (10), and the inlet ports of the gas outlet pipes (301) are arranged in a staggered manner along the axial direction of the cylinder body (10); and the height of an outlet port of the gas inlet pipe (20) is lower than the height of the inlet ports of the gas outlet pipes (301).

Description

Gas-liquid separator

[0001] Related applications

[0002] This application claims priority to Chinese patent application number 202323385486.9, filed on December 12, 2023, entitled “Gas-Liquid Separator,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of refrigeration technology, and in particular to a gas-liquid separator. Background Art

[0004] In refrigeration systems, gas-liquid separators primarily serve to store, separate, filter, muffle, and buffer refrigerants, preventing liquid refrigerant from flowing into the compressor and causing liquid hammer. In related technologies, gas-liquid separators are connected between the evaporator and the compressor to separate the two-phase refrigerant output from the evaporator, allowing the gaseous refrigerant to be drawn back into the compressor. However, in multi-split air conditioning systems, the output efficiency of the gaseous refrigerant from a single gas-liquid separator is low, necessitating the installation of multiple gas-liquid separators for output, increasing production costs. Summary of the Invention

[0005] According to various embodiments of the present application, a gas-liquid separator is provided.

[0006] 18. The air-liquid separator of claim 17, wherein the air inlet is connected to the air intake pipe of the cylinder and the air outlet is connected to the air intake pipe of the cylinder. The air inlet is connected to the air outlet of the cylinder and the air outlet is connected to the air intake pipe of the cylinder. The air inlet is connected to the air intake pipe of the cylinder and the air outlet is connected to the air intake pipe of the cylinder.

[0007] In one embodiment, the plurality of air outlet pipes include a first air outlet pipe and a second air outlet pipe, and one first air outlet pipe and one second air outlet pipe constitute an air outlet pipe group; the gas-liquid separator includes at least two air outlet pipe groups, and at least two air outlet pipe groups are arranged at intervals; in each of the air outlet pipe groups, the input port of the first air outlet pipe is higher than the input port of the second air outlet pipe.

[0008] In one embodiment, in each of the air outlet pipe groups, the height difference between the input port of the first air outlet pipeline and the input port of the second air outlet pipeline is no more than 10% of the height of the cylinder.

[0009] In one embodiment, the air intake pipeline includes a first air intake section and a second air intake section, the first air intake section and the second air intake section are connected and arranged at an angle, the angle is an angle greater than 0° and less than 180° or a reflection angle greater than 180° and less than 360°, the first air intake section extends axially along the cylinder, and the end of the second air intake section is provided with an output port of the air intake pipeline, and the output port faces the inner cylinder wall of the cylinder.

[0010] In one embodiment, along the first direction, a plurality of the air outlet pipe groups are arranged on both sides of the air inlet pipe, and in each of the air outlet pipe groups, the first air outlet pipe and the second air outlet pipe are arranged side by side.

[0011] In one embodiment, in each of the air outlet pipe groups, the input port of the first air outlet pipeline and the input port of the second air outlet pipeline are arranged alternately along the first direction and the second direction.

[0012] In one embodiment, along the first direction, multiple air outlet pipe groups are arranged on both sides of the air inlet pipe, and along the axial direction of the cylinder, in each air outlet pipe group, the projection of the first air outlet pipe and the projection of the second air outlet pipe are arranged along the circumference of the cylinder.

[0013] In one embodiment, along the first direction and / or the second direction, a projection of the input port of the first air outlet pipeline and a projection of the input port of the second air outlet pipeline are overlapped.

[0014] In one embodiment, the air inlet is located in the middle of the cylinder, and along the axial direction of the cylinder, the central axis of the projection of the second air inlet section forms an angle α with the second direction, and the range of α is 0<α≤30°.

[0015] In one embodiment, each of the air outlet pipes includes a first air outlet section, a second air outlet section and a first arc section, and the first air outlet section and the second air outlet section are connected by the first arc section; the air outlet pipe is provided with at least two oil return holes, and any two of the first air outlet section, the first arc section and the second air outlet section are respectively provided with at least one oil return hole, and at least two of the oil return holes are staggered along the axial direction of the cylinder, and the oil return hole is arranged close to the bottom of the cylinder.

[0016] In one embodiment, each of the air outlet pipes further includes a filter element, and the filter element is installed in the oil return hole; the diameter of the oil return hole accounts for 5% to 15% of the diameter of the air outlet pipe.

[0017] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to better describe and illustrate the embodiments and / or examples of the inventions disclosed herein, reference may be made to one or more of the accompanying drawings. The additional details or examples used to describe the accompanying drawings should not be considered to limit the scope of the disclosed inventions, the presently described embodiments and / or examples, and any of the best modes currently understood for these inventions.

[0019] FIG1 is a top view of an embodiment of a gas-liquid separator provided in the present application.

[0020] FIG2 is a cross-sectional view of an embodiment of a gas-liquid separator provided in the present application.

[0021] FIG3 is a schematic structural diagram of a gas-liquid separator provided in the present application when there is only one gas outlet pipeline.

[0022] FIG4 is a schematic structural diagram of the gas outlet pipeline in the gas-liquid separator provided in this application.

[0023] FIG5 is a top view of another embodiment of the gas-liquid separator provided in the present application.

[0024] Figure numerals: 100, gas-liquid separator; 10, cylinder; 101, air inlet; 102, air outlet; 20, air inlet pipeline; 21, first air inlet section; 22, second air inlet section; 23, first bushing; 30, air outlet pipe group; 301, air outlet pipeline; 3011, first air outlet section; 3012, second air outlet section; 3013, first arc section; 3014, second bushing; 31, first air outlet pipeline; 32, second air outlet pipeline; 40, filter element. DETAILED DESCRIPTION

[0025] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0026] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0028] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0030] Please refer to Figures 1 to 5. The present application provides a gas-liquid separator 100, which includes a cylinder 10, at least one air inlet pipe 20 and a plurality of air outlet pipes 301 arranged at intervals; the cylinder 10 is provided with at least one air inlet 101 and a plurality of air outlets 102, and the at least one air inlet 101 and the plurality of air outlets 102 are arranged at intervals; at least one air inlet pipe 20 is installed in the corresponding air inlet 101 and extends into the cylinder 10 from the air inlet 101; each air outlet pipe 301 is installed in the corresponding air outlet 102 and extends into the cylinder 10 from the air outlet 102; in the cylinder 10, the input port of the air outlet pipe 301 is arranged near the top of the cylinder 10, and the input ports of at least two air outlet pipes 301 are staggered along the axial direction of the cylinder 10; wherein, in the cylinder 10, the height of the output port of the air inlet pipe 20 is lower than the height of the input port of the air outlet pipe 301.

[0031] For a more intuitive view, FIG3 shows a cross-sectional view of the gas-liquid separator 100 when there is only one gas outlet pipeline 301 and one gas inlet pipeline 20 .

[0032] In this way, the air inlet pipe 20 is installed at the air inlet 101 to facilitate the input of the refrigerant into the cylinder 10. The refrigerant undergoes gas-liquid separation inside the cylinder 10, and the liquid refrigerant accumulates at the bottom of the cylinder 10 due to gravity, and the gaseous refrigerant is located above the liquid refrigerant. Therefore, the input port of the air outlet pipe 301 is close to the top of the cylinder 10, and the height of the output port of the air inlet pipe 20 is lower than the height of the input port of the air outlet pipe 301, so as to facilitate gas-liquid separation below the input port of the air outlet pipe 301, avoid the liquid refrigerant from directly entering the input port of the air outlet pipe 301, and prevent liquid hammer. In some embodiments, one air inlet pipe 20 and one air inlet 101 are respectively provided. In other embodiments, two or more air inlet pipes 20 and air inlet 101 are respectively provided, depending on actual needs. For ease of explanation, this application is described with one air inlet pipe 20 and one air inlet 101.

[0033] Furthermore, the provision of multiple air outlets 102 facilitates the installation of multiple air outlet pipes 301, increases the output channels of the gaseous refrigerant, and helps to improve the output efficiency of the gaseous refrigerant. In addition, the input ports of at least two air outlet pipes 301 are staggered along the axial direction of the cylinder 10 to form a height difference, which is conducive to the simultaneous output of gaseous refrigerants at different height layers in the cylinder 10, further improving the output efficiency of the gaseous refrigerant. In a multi-unit air-conditioning system, one gas-liquid separator 100 can be connected to multiple compressor air inlets, and each compressor air inlet is connected to the air outlet pipe 301 corresponding to the gas-liquid separator 100, which can reduce the number of gas-liquid separators 100 and help to reduce costs. Note: The input port of the air outlet pipe 301 and the output port of the air inlet pipe 20 mentioned below are both located in the cylinder 10.

[0034] For ease of explanation, the direction of a chord passing through the center of the cylinder 10 is defined as the first direction, and the direction of another chord passing through the center of the cylinder 10 is defined as the second direction. The first and second directions are perpendicular. The first direction is defined as the y-axis, the second direction is defined as the x-axis, and the axial direction of the cylinder 10 is defined as the z-axis.

[0035] The maximum distance between the upper end cover of the cylinder 10 and the lower end cover of the cylinder 10 along the Z axis is defined as the cylinder height H.

[0036] As shown in FIG. 1 and FIG. 5 , in an optional embodiment, the plurality of air outlet pipes 301 include a first air outlet pipe 31 and a second air outlet pipe 32 , wherein a first air outlet pipe 31 and a second air outlet pipe 32 together constitute an air outlet pipe group 30 .

[0037] As shown in Figures 1 and 5, in an optional embodiment, multiple air outlet pipes 301 are defined as a first air outlet pipe 31 and a second air outlet pipe 32, wherein a first air outlet pipe 31 and a second air outlet pipe 32 together constitute an air outlet pipe group 30; the gas-liquid separator 100 includes at least two air outlet pipe groups 30, and at least two air outlet pipe groups 30 are arranged at intervals; in each air outlet pipe group 30, the input port of the first air outlet pipe 31 is higher than the input port of the second air outlet pipe 32.

[0038] In this way, at least two air outlet pipe groups 30 are provided to improve the output efficiency of the gaseous refrigerant. At the same time, in each air outlet pipe group 30, the input port of the first air outlet pipe 31 is higher than the input port of the second air outlet pipe 32, so that each air outlet pipe group 30 can simultaneously extract and output the gaseous refrigerant at different height layers in the cylinder 10. For ease of explanation, the present application sets the heights of each first air outlet pipe 31 to be consistent, and the heights of each second air outlet pipe 32 to be consistent. In other embodiments, it can also be set so that the heights of the multiple first air outlet pipes 31 are different, and the heights of the multiple second air outlet pipes 32 are different.

[0039] As shown in FIG2 , as a specific embodiment, in each outlet pipe assembly 30 , the height difference h between the input port of the first outlet pipe 31 and the input port of the second outlet pipe 32 is no greater than 10% of the height H of the cylinder 10 . This ensures that the first and second outlet pipes 31 , 32 simultaneously output gaseous refrigerant from different height layers, while also preventing a significant height difference, ensuring that the height of the input port of the second outlet pipe 32 is not too low, thereby preventing a large amount of liquid refrigerant from entering the second outlet pipe 32 and causing liquid hammer in the compressor. For example, in the outlet pipe assembly 30 , the height difference h between the input port of the first outlet pipe 31 and the input port of the second outlet pipe 32 is 2%, 6%, or 10% of the height H of the cylinder 10 .

[0040] Next, the structure of the intake pipe 20 will be described in detail.

[0041] As shown in Figures 2 and 3, in a specific embodiment, the air intake pipeline 20 includes a first air intake section 21 and a second air intake section 22. The first air intake section 21 and the second air intake section 22 are connected and arranged at an angle. The end of the second air intake section 22 is provided with an output port of the air intake pipeline 20, and the output port faces the inner wall of the cylinder 10.

[0042] For example, the angle between the first air inlet section 21 and the second air inlet section 22 may be an angle greater than 0° and less than 180°, or a reflection angle greater than 180° and less than 360°.

[0043] In this way, the first air inlet section 21 and the second air inlet section 22 are arranged so that when the refrigerant is input into the cylinder 10, the refrigerant can collide with the inner wall of the cylinder 10. After the refrigerant collides with the inner wall of the cylinder 10, it can be divided into two streams of fluid, which flow in opposite directions along the circumference of the cylinder 10, and finally converge to the middle of the cylinder 10. During the entire refrigerant flow process, the refrigerant can be output to the external compressor from different air outlet pipes 301. Specifically, the first air inlet section 21 extends axially along the cylinder 10, and the second air inlet section 22 extends radially along the cylinder 10, so that the refrigerant input from the second air inlet section 22 collides with the inner wall of the cylinder 10, promoting the centrifugal movement of the refrigerant. At the same time, a smooth transition is made when the first air inlet section 21 and the second air inlet section 22 are connected to reduce stress concentration.

[0044] As shown in FIG. 2 , the air intake pipe 20 further includes a first bushing 23 . The first bushing 23 is installed at the air intake port 101 and sleeved on the outer peripheral wall of the first air intake section 21 , and has the function of reducing wear and protecting the air intake pipe 20 .

[0045] Next, the structure of the air outlet pipe 301 is described.

[0046] As shown in Figures 2 to 4, in an optional embodiment, each air outlet pipeline 301 includes a first air outlet section 3011 and a second air outlet section 3012, the first air outlet section 3011 and the second air outlet section 3012 are connected, the first air outlet section 3011 is installed at the corresponding air outlet 102, the part of the first air outlet section 3011 extending out of the cylinder 10 is provided with an output port of the air outlet pipeline 301, and the end of the second air outlet section 3012 is provided with an input port of the air outlet pipeline 301; the first air outlet section 3011 and / or the second air outlet section 3012 are provided with an oil return hole close to the bottom of the cylinder 10.

[0047] In this way, the first gas outlet section 3011 and the second gas outlet section 3012 cooperate to facilitate the output of gaseous refrigerant near the top of the cylinder 10, while also recovering the refrigerant oil in the liquid refrigerant near the bottom of the cylinder 10, thereby simultaneously meeting the output efficiency of both oil return and gaseous refrigerant. During the refrigerant output process, after the gaseous refrigerant enters the second gas outlet section 3012, its flow rate increases and its pressure decreases. While remaining in a gaseous state, it releases some heat. When the gaseous refrigerant passes through the oil return hole, it can convert the liquid refrigerant flowing in from the oil return hole into a gaseous state for output, preventing liquid hammer and promoting the recycling efficiency of the refrigerant. At the same time, the gaseous refrigerant can also carry away small oil droplets that enter through the oil return hole, promoting the return of the refrigerant oil to the compressor. In the case of excess liquid refrigerant, since the present application is provided with multiple air outlet pipes 301 and can output gaseous refrigerant at different height layers, the excess liquid refrigerant can be diverted and enter the air outlet pipe 301 from multiple oil return holes. The gaseous refrigerant in each air outlet pipe 301 can vaporize the liquid refrigerant in its respective air outlet pipe 301, so that the excess liquid refrigerant can be vaporized and output from multiple air outlet pipes 301 at the same time, thereby improving the protection function against liquid hammer under extreme working conditions with excess liquid refrigerant.

[0048] As shown in Figures 2 to 4, in a further embodiment, each air outlet pipe 301 also includes a first arc section 3013, the first air outlet section 3011 and the second air outlet section 3012 are connected through the first arc section 3013, and the air outlet pipe 301 is provided with at least two oil return holes, and any two of the first air outlet section 3011, the first arc section 3013 and the second air outlet section 3012 are respectively provided with at least one oil return hole, and at least two oil return holes are arranged in an axially staggered manner along the cylinder 10, and the oil return holes are arranged close to the bottom of the cylinder 10.

[0049] Thus, the provision of the first arcuate segment 3013 facilitates a smooth transition between the first outlet segment 3011 and the second outlet segment 3012, reducing stress concentration. The oil return hole can also be provided in the first arcuate segment 3013. The staggered arrangement of at least two oil return holes along the axial direction of the cylinder 10 facilitates simultaneous oil return at different liquid levels, thereby improving oil return efficiency.

[0050] In a further embodiment, the diameter of the oil return hole accounts for 5% to 15% of the diameter of the outlet pipe 301. Thus, the smaller diameter of the oil return hole facilitates throttling of the liquid refrigerant, reduces its pressure, and promotes its vaporization. For example, the diameter of the oil return hole accounts for 5%, 10%, or 15% of the diameter of the outlet pipe 301.

[0051] In a specific embodiment, the diameter of the oil return hole ranges from 1 mm to 3 mm. For example, the diameter of the oil return hole is 1 mm, 2 mm, or 3 mm.

[0052] As shown in FIG. 2 to FIG. 4 , in a specific embodiment, the air outlet pipeline 301 further includes a second bushing 3014 , and the first air outlet section 3011 is installed at the air outlet 102 through the second bushing 3014 , which is beneficial to protecting the air outlet pipeline 201 .

[0053] In a specific embodiment, each gas outlet pipeline 301 further includes a filter element 40, which is installed in the oil return hole. In this way, the refrigeration oil can be filtered to prevent impurities from entering, thereby protecting the compressor.

[0054] Furthermore, the arrangement of the gas outlet pipe 301 in the cylinder 10 is described.

[0055] As shown in Figure 1, in an optional embodiment, multiple outlet pipe groups 30 are arranged on both sides of the air inlet pipe 20 along a first direction, and in each outlet pipe group 30, the first outlet pipe 31 and the second outlet pipe 32 are arranged side by side. In this way, since the refrigerant input from the air inlet pipe is mainly divided into two streams after colliding with the inner wall of the cylinder 10 and moving in opposite directions along the circumference of the cylinder 10, multiple outlet pipe groups 30 are arranged on both sides of the air inlet pipe to facilitate the direct output of the gaseous refrigerant at the highest level of the two streams. At the same time, this also facilitates the uniform distribution of the first outlet pipe 31 and the second outlet pipe 32, so that the gaseous refrigerant at different heights at different positions in the cylinder 10 can be simultaneously output from the first outlet pipe 31 and the second outlet pipe 32, thereby improving output efficiency.

[0056] In a specific embodiment, in each outlet pipe assembly 30, the input ports of the first outlet pipe 31 and the second outlet pipe 32 are arranged alternately along the first and second directions. This facilitates circumferential arrangement of the input ports of the first outlet pipe 31 and the second outlet pipe 32 around the air inlet 101, facilitating simultaneous discharge of gaseous refrigerant at different locations, further improving discharge efficiency.

[0057] As shown in FIG5 , in another optional embodiment, multiple outlet pipe groups 30 are provided on both sides of the air inlet pipe 20 along the first direction. Axially, in each outlet pipe group 30, the projections of the first outlet pipe 31 and the second outlet pipe 32 are arranged circumferentially along the cylinder 10. That is, the first outlet pipe 31 and the second outlet pipe 32 are alternately arranged circumferentially along the cylinder 10. This allows the gaseous refrigerant flowing circumferentially along the cylinder 10 to directly enter the first outlet pipe 31 and the second outlet pipe 32, thereby improving the output efficiency of the gaseous refrigerant.

[0058] As shown in FIG5 , in a further specific embodiment, the projections of the input port of the first gas outlet pipe 31 and the projections of the input port of the second gas outlet pipe 32 are arranged to overlap along the first direction and / or the second direction. This promotes a uniform distribution of the input ports of the first gas outlet pipe 31 and the second gas outlet pipe 32 along the radial direction of the cylinder 10. The presence of input ports at different heights in the first direction and / or the second direction facilitates the discharge of gaseous refrigerant at different height levels, further improving the discharge efficiency of the gaseous refrigerant.

[0059] As shown in Figures 1 and 5 , based on the above embodiment, more specifically, the air inlet 101 is located in the middle of the cylinder 10. Along the axial direction of the cylinder 10, the projection of the second air inlet section 22 in the air inlet pipe 20 is arranged at an angle to the second direction. In this way, along the first direction, the contact area between the refrigerant on both sides of the second air inlet section 22 and the inner wall of the cylinder 10 is different. As a result, after the refrigerant is input into the second air inlet section 22, the flow rates of the two fluids into which the refrigerant is divided are also different. This makes the fluid with a large flow rate tend to move toward the fluid with a small flow rate, which is beneficial to promoting the centrifugal movement of the refrigerant in the cylinder 10, thereby promoting the separation of the gas-liquid two-phase refrigerant.

[0060] As shown in Figures 1 and 5 , the angle α between the projection of the second air inlet segment 22 and the second direction is defined. Specifically, the angle α between the central axis of the projection of the second air inlet segment 22 and the second direction is in the range of 0 < α ≤ 30°. This ensures that while promoting centrifugal motion of the refrigerant, it avoids being too close to the inlet of the outlet pipe 301, preventing some liquid refrigerant from splashing into the outlet pipe 301 when striking the inner cylinder wall before the refrigerant has time to centrifuge. For example, α can be set to 5°, 15°, or 30°.

[0061] In other embodiments, the arrangement of the outlet pipes 301 can also be set according to the number of the inlet pipes 20, the arrangement of the inlet pipes 20, etc., to promote uniform distribution of the outlet pipes 301, so that the gas refrigerant can be evenly and synchronously sucked into the compressor, thereby improving the output efficiency.

[0062] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. A gas-liquid separator, characterized in that: include: The cylinder is provided with at least one air inlet and a plurality of air outlets, wherein the at least one air inlet and the plurality of air outlets are arranged at intervals; At least one air inlet pipeline is installed at the corresponding air inlet and extends from the air inlet into the cylinder; A plurality of air outlet pipelines arranged at intervals, each of the air outlet pipelines being installed at the corresponding air outlet and extending from the air outlet into the cylinder; In the cylinder, the input port of the air outlet pipeline is arranged near the top of the cylinder, at least two input ports of the air outlet pipeline are staggered along the axial direction of the cylinder, and the height of the output port of the air inlet pipeline is lower than the height of the input port of the air outlet pipeline.

2. The gas-liquid separator according to claim 1, wherein: The plurality of air outlet pipelines include a first air outlet pipeline and a second air outlet pipeline, and one of the first air outlet pipelines and one of the second air outlet pipelines form an air outlet pipeline group; The gas-liquid separator comprises at least two gas outlet pipe groups, and the at least two gas outlet pipe groups are arranged at intervals; in each gas outlet pipe group, the input port of the first gas outlet pipeline is higher than the input port of the second gas outlet pipeline.

3. The gas-liquid separator according to claim 2, wherein: In each of the air outlet pipe groups, a height difference between an input port of the first air outlet pipeline and an input port of the second air outlet pipeline is not greater than 10% of a height H of the cylinder.

4. The gas-liquid separator according to claim 1, characterized in that: The air intake pipeline includes a first air intake section and a second air intake section, the first air intake section and the second air intake section are connected and arranged at an angle, the angle is an angle greater than 0° and less than 180° or a reflection angle greater than 180° and less than 360°, the first air intake section extends axially along the cylinder, and the end of the second air intake section is provided with an output port of the air intake pipeline, and the output port faces the inner cylinder wall of the cylinder.

5. The gas-liquid separator according to claim 2, wherein: Along the first direction, the plurality of air outlet pipe groups are arranged on both sides of the air inlet pipeline, and in each of the air outlet pipe groups, the first air outlet pipeline and the second air outlet pipeline are arranged side by side.

6. The gas-liquid separator according to claim 5, wherein: In each of the air outlet pipe groups, the input port of the first air outlet pipeline and the input port of the second air outlet pipeline are arranged alternately along the first direction and the second direction.

7. The gas-liquid separator according to claim 2, wherein: Along the first direction, the plurality of air outlet pipe groups are arranged on both sides of the air inlet pipeline, and along the axial direction of the cylinder, in each air outlet pipe group, the projection of the first air outlet pipeline and the projection of the second air outlet pipeline are arranged along the circumference of the cylinder.

8. The gas-liquid separator according to claim 7, wherein: Along the first direction and / or the second direction, a projection of the input port of the first air outlet pipeline and a projection of the input port of the second air outlet pipeline are overlapped and arranged.

9. The gas-liquid separator according to claim 4, wherein: The air inlet is located in the middle of the cylinder, and along the axial direction of the cylinder, the central axis of the projection of the second air inlet section forms an angle α with the second direction, and the range of α is 0<α≤30°.

10. The gas-liquid separator according to claim 1, wherein: Each of the air outlet pipelines comprises a first air outlet section, a second air outlet section and a first arc section, and the first air outlet section and the second air outlet section are connected via the first arc section; The air outlet pipeline is provided with at least two oil return holes, and any two of the first air outlet section, the first arc section and the second air outlet section are respectively provided with at least one oil return hole, and at least two of the oil return holes are staggered along the axial direction of the cylinder, and the oil return hole is arranged close to the bottom of the cylinder.

11. The gas-liquid separator according to claim 10, wherein: Each of the air outlet pipelines further comprises a filter element, and the filter element is installed in the oil return hole; The diameter of the oil return hole accounts for 5% to 15% of the diameter of the air outlet pipeline.

Images