Gas-liquid separation device and refrigeration system
Patent Information
- Application Number
- CN202522563747.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-02
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-02
AI Technical Summary
In existing technologies, as the compressor's discharge capacity increases, the required volume of the gas-liquid separator's cylinder also increases, leading to higher costs.
Piping components, including tees and bends, are installed in the gas-liquid separation device to perform preliminary gas-liquid separation by utilizing density differences and centrifugal force, thereby reducing the volume of refrigerant entering the cylinder and lowering the requirements for cylinder volume.
By initially separating the gaseous refrigerant, the required cylinder volume is reduced, costs are lowered, and a highly efficient gas-liquid separation effect is achieved.
Smart Images
Figure CN224933024U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of refrigeration technology, and in particular to a gas-liquid separation device and refrigeration system. Background Technology
[0002] A gas-liquid separator is typically installed before the compressor to separate the gas-liquid mixture of refrigerant, preventing liquid refrigerant from entering the compressor and causing liquid slugging.
[0003] In related technologies, gaseous and liquid refrigerants are usually separated in the cylinder of a gas-liquid separator by centrifugal force and inertia. When the discharge volume of the compressor increases, a larger volume gas-liquid separator is required to meet the gas-liquid separation, which increases the cost. Utility Model Content
[0004] In view of this, it is necessary to provide a gas-liquid separation device that can reduce the requirement for the size of the cylinder volume when the compressor discharge volume increases.
[0005] This utility model provides a gas-liquid separation device, including a cylinder, an inlet pipe, and an outlet pipe, with one end of the inlet pipe and the outlet pipe respectively extending into the cylinder. The gas-liquid separation device also includes a pipeline assembly located outside the cylinder, the pipeline assembly having a first inlet, a first outlet, and a second outlet. The first inlet is used for the inflow of refrigerant, and the first outlet is connected to the other end of the inlet pipe located outside the cylinder. The first inlet, the first outlet, and the second outlet are interconnected within the pipeline assembly. When the gas-liquid separation device is installed vertically, the first inlet is located above the first outlet, the second outlet is located above the first outlet, and the angle θ between the orientation of the second outlet and the orientation of the first outlet is an obtuse angle.
[0006] It is understandable that this utility model achieves preliminary gas-liquid separation by setting a pipeline before the cylinder. The separated gaseous refrigerant flows out of the second outlet into the refrigeration system, which can reduce the volume of refrigerant entering the cylinder and reduce the burden of gas-liquid separation in the cylinder. Especially when the compressor discharge volume increases, it reduces the volume requirement of the cylinder and reduces costs.
[0007] In one embodiment, the piping assembly includes a tee pipe, with the first inlet, the first outlet, and the second outlet located at the three openings of the tee pipe; or, the piping assembly includes a bend pipe, with the first inlet and the first outlet located at the two ends of the bend pipe.
[0008] This design allows the liquid refrigerant to sink due to its higher density and the gaseous refrigerant to float due to its lower density during flow. Additionally, the inner wall of the bend can change the flow direction of the gaseous refrigerant in the gas-liquid mixture. At the same time, centrifugal force is generated when passing through the bend, thereby separating a portion of the gaseous refrigerant. This can be achieved with just piping, resulting in a simple structure and low cost.
[0009] In one embodiment, the piping assembly includes a tee pipe and a baffle disposed within the tee pipe. The baffle is inclined and has a first end and a second end disposed opposite to each other. The first end is connected to the inner wall of the tee pipe, and the second end extends toward the second outlet and the first inlet and is spaced apart from the inner wall of the tee pipe. The angle α between the axis of the baffle and the axis of the first inlet is an acute angle.
[0010] With this configuration, the baffle plate receives the impact of the refrigerant. The gaseous refrigerant changes its flow direction due to its low inertia, while the liquid refrigerant, due to its high inertia, impacts the baffle plate and coalesces and falls, thus achieving partial separation of gaseous and liquid refrigerant.
[0011] In one embodiment, the first end is flush with the central axis of the first inlet, and the distance between the second end and the end face of the first outlet is greater than the maximum value of the distance between the inner wall surface of the first inlet and the end face of the first outlet.
[0012] This design not only ensures that most of the refrigerant can impact the baffles, but also saves materials.
[0013] In one embodiment, a notch is formed between the baffle and the inner wall of the tee, and the ratio of the cross-sectional area of the notch to the cross-sectional area of the tee between the second outlet and the baffle is in the range of [10%, 100%].
[0014] In one embodiment, the piping assembly includes a bend, and the piping assembly further includes an outlet pipe communicating with the bend, wherein the second outlet is located at the end of the outlet pipe away from the first outlet, and one end of the outlet pipe extends into the bend.
[0015] Understandably, the part of the outlet pipe that extends into the bend can also achieve the effect of gas-liquid separation.
[0016] In one embodiment, the distance between the end of the vent pipe near the first outlet and the end face of the first outlet is less than the minimum distance between the inner wall of the first inlet and the end face of the first outlet.
[0017] Understandably, the lowest point of the second inlet is lower than the lower inner wall of the first inlet, allowing the outer wall of the outlet pipe extending into the bend to fully separate the refrigerant entering the first inlet into gas and liquid.
[0018] In one embodiment, the vent pipe has a second inlet disposed opposite to the second outlet, the second inlet being located inside the bend, the end face of the second inlet being inclined, and the end face of the second inlet near the first inlet having a tendency to extend toward the first outlet.
[0019] This design increases the inlet area of the exhaust pipe.
[0020] In one embodiment, the gas-liquid separation device further includes a confluence component, which includes at least three connection ports, one of which is connected to the second outlet and another of which is connected to the outlet pipe.
[0021] This utility model also provides a refrigeration system, including a system body and the above-mentioned gas-liquid separation device, wherein the first inlet and the second outlet are respectively connected to the system body.
[0022] This invention reduces the requirement for cylinder volume and decreases the volume of the gas-liquid separator by installing a pipeline assembly in front of the cylinder to perform preliminary gas-liquid separation of the refrigerant before it enters the cylinder, and then allowing the separated gaseous refrigerant to flow into the refrigeration system. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 A schematic diagram of the gas-liquid separation device provided by this utility model;
[0025] Figure 2 This is a top view of the piping assembly in Embodiment 1;
[0026] Figure 3 for Figure 2 A sectional view of AA;
[0027] Figure 4 This is a top view of the piping assembly in Embodiment 2;
[0028] Figure 5 for Figure 4A sectional view of BB in the diagram;
[0029] Figure 6 This is a cross-sectional view of one embodiment of the assembly component;
[0030] Figure 7 This is a schematic diagram of a refrigeration system.
[0031] Reference numerals: 1000, Refrigeration system; 100, Gas-liquid separation device; 10, Cylinder; 20, Inlet pipe; 30, Outlet pipe; 40, Piping assembly; 41, First inlet; 42, First outlet; 43, Second outlet; 44, T-connector; 45, Baffle; 451, First end; 452, Second end; 453, Notch; 46, Bend; 47, Gas outlet pipe; 471, Second inlet; 50, Merging assembly; 200, System body; 210, Evaporator; 220, Condenser; 230, Expansion valve; 240, Compressor. Detailed Implementation
[0032] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.
[0034] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0035] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0036] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0037] Please see Figure 1 and Figure 7 This utility model provides a gas-liquid separation device 100, which is connected to the refrigeration system 1000 and installed before the compressor 240. It is used to separate the liquid refrigerant and the gaseous refrigerant in the refrigerant to ensure that the refrigerant entering the compressor 240 is all gaseous, so as to protect the compressor 240 from liquid slugging.
[0038] Specifically, the gas-liquid separation device 100 includes a cylinder 10, an inlet pipe 20, and an outlet pipe 30, with one end of the inlet pipe 20 and the outlet pipe 30 extending into the cylinder 10, respectively.
[0039] The gas-liquid separation device 100 also includes a pipeline assembly 40 located outside the cylinder 10. The pipeline assembly 40 has a first inlet 41, a first outlet 42 and a second outlet 43. The first inlet 41 is connected to the system body 200, that is, connected to the evaporator 210. The second outlet 43 is connected to the system body 200. The first outlet 42 is connected to the end of the inlet pipe 20 located outside the cylinder 10. The first outlet 42 is vertically downward. The first inlet 41, the first outlet 42 and the second outlet 43 are interconnected inside the pipeline assembly 40. During installation, the gas-liquid separator 100 is installed vertically, the cylinder 10 is placed vertically, the second outlet 43 is located above the first outlet 42, the first inlet 41 is located above the first outlet 42, and the angle θ between the orientation of the second outlet 43 and the orientation of the first outlet 42 is an obtuse angle. That is, the second outlet 43 can be tilted upward or vertically upward. The pipeline assembly 40 can separate at least a portion of the gaseous refrigerant in the gas-liquid mixture through density difference or centrifugal force. The separated gaseous refrigerant enters the second outlet 43 and flows out due to buoyancy. The gas-liquid mixed refrigerant enters through the first inlet 41. During its flow in the piping assembly 40, a portion of the gaseous refrigerant is separated by a change in flow direction and / or gravity and / or centrifugal force, and flows out through the second outlet 43. The remaining liquid refrigerant and the gas-liquid mixed refrigerant enter the cylinder 10 through the first outlet 42. After gas-liquid separation, the gaseous refrigerant flows out through the outlet pipe 30 and mixes with the gaseous refrigerant at the second outlet 43 before entering the compressor 240. Thus, by separating a portion of the gas-liquid mixed refrigerant into gaseous form before entering the cylinder 10 and allowing it to flow out through the second outlet 43, the volume of refrigerant entering the cylinder 10 is reduced. This reduces the volume requirement of the cylinder 10 when the compressor 240's displacement increases, thereby reducing the volume of the cylinder 10 and lowering costs. The second outlet 43 can be directly connected to the system body 200, or indirectly connected to the system body 200 through other parts. θ can be 95°, 100°, 120°, 160°, 180°, or any other value between 90° and 180°. It should be noted that the system body 200 in this invention refers to the part of the refrigeration system 1000 excluding the gas-liquid separation device 100.
[0040] The piping assembly 40 is located above the cylinder 10, and the first outlet 42 is coaxially arranged with the inlet pipe 20. The mixed refrigerant and liquid refrigerant can drip naturally into the cylinder 10, reducing the flow resistance of the refrigerant.
[0041] In one embodiment, the first inlet 41 is horizontally positioned, and is perpendicular to both the first outlet 42 and the second outlet 43. The angle between the axis of the first inlet 41 and the axis of the first outlet 42 is 90°. During flow, the refrigerant impacts the inner wall of the pipe. Due to its low density and inertia, the gaseous refrigerant easily changes direction, achieving gas-liquid separation. The second outlet 43 is parallel and coaxial with the first outlet 42, i.e., θ is 180°, facilitating processing and installation of the gas-liquid separator 100. In another embodiment, the first inlet 41 is vertically positioned, and is parallel and coaxial with the first outlet 42. Part of the gaseous and liquid refrigerant is separated by gravity. In other embodiments, the first inlet 41 may also be inclined.
[0042] The gas-liquid separation device 100 also includes a merging assembly 50 located outside the cylinder 10. The merging assembly 50 includes at least three connection ports, one of which is connected to the second outlet 43, another connection port is connected to the outlet pipe 30, and the remaining connection port is connected to the refrigeration system 1000, that is, connected to the inlet of the compressor 240.
[0043] The confluence assembly 50 is a Y-type tee, a trouser-type tee, or a T-type tee. Figure 6 The structure of one embodiment of the converging component 50 is shown.
[0044] Example 1
[0045] Please see Figure 2 and Figure 3 The piping assembly 40 includes a three-way pipe 44, with a first inlet 41, a first outlet 42, and a second outlet 43 located at the three openings of the three-way pipe 44. In this way, the gas-liquid mixture can be separated into gaseous refrigerants by gravity.
[0046] The piping assembly 40 also includes a baffle 45 disposed within the tee pipe 44. The baffle 45 has a first end 451 and a second end 452 disposed opposite to each other. The first end 451 is connected to the inner wall of the tee pipe 44, and the second end 452 extends toward the second outlet 43 and the first inlet 41. The angle α between the axis of the baffle 45 and the axis of the first inlet 41 is an acute angle, that is, the baffle 45 is inclined and tilted toward the second outlet 43. The inclined baffle 45 can receive the impact of the mixed refrigerant entering the first inlet 41, and the baffle 45 tilted toward the second outlet 43 can prevent a portion of the gas-liquid mixed refrigerant from rushing into the second outlet 43. α can be 10°, 20°, 30°, 45°, 50°, 60°, 70° or other acute angles.
[0047] Understandably, the gas-liquid mixed refrigerant enters through the first inlet 41. After being blocked by the baffle 45, the flow direction and state of the gas-liquid mixed refrigerant change. Due to the lower density and inertia of the gas, it easily changes direction, while the higher density of the liquid refrigerant causes it to continue moving forward due to inertia, thus achieving the separation of the liquid and gaseous refrigerants. The baffle 45 enhances the initial separation effect of the gas-liquid mixed refrigerant, further reducing the volume requirements of the cylinder 10.
[0048] In one embodiment, the first end 451 of the baffle 45 is flush with the central axis of the first inlet 41, and the distance between the second end 452 and the end face of the first outlet 42 is greater than the maximum distance between the inner wall of the first inlet 41 and the end face of the first outlet 42; that is, the second end 452 is higher than the upper inner wall of the first inlet 41. This allows the baffle 45 to block as much of the gas-liquid mixture as possible, preventing it from flowing into the second outlet 43. Aligning the first end 451 of the baffle 45 with the central axis of the first inlet 41 also saves on material costs. In other embodiments, the first end 451 may be lower than the central axis of the first inlet 41.
[0049] The baffle 45 and the inner wall of the tee pipe 44 are spaced apart to form a notch 453, which reserves a certain flow area for the gaseous refrigerant to flow out from the second outlet 43. The ratio of the cross-sectional area of the notch 453 to the cross-sectional area of the pipe between the baffle 45 and the second outlet 43 is [10%, 100%]. That is, the cross-sectional area of the notch 453 is [10%, 100%] of the cross-sectional area of the pipe without the baffle 45. If the notch 453 is too small, it will affect the flow rate of the gaseous refrigerant. If the notch 453 is too large, it will affect the contact area between the baffle 45 and the refrigerant, thus affecting the gas-liquid separation effect. The cross-sectional area of the notch 453 can be 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% or other arbitrary values of the cross-sectional area of the pipe without the baffle 45, or the baffle 45 can be omitted, and an adaptive adjustment can be made according to the refrigerant flow rate in the actual application.
[0050] Example 2
[0051] This embodiment has a basically the same structure as the previous embodiment, and the similarities will not be repeated. The differences are as follows:
[0052] Please see Figure 4 and Figure 5 The piping assembly 40 includes a bend 46. The inner wall of the bend can generate centrifugal force in the gas-liquid mixture of refrigerants, and the denser liquid refrigerant is thrown towards the wall, thereby achieving partial separation of liquid and gaseous refrigerants.
[0053] The piping assembly 40 also includes an outlet pipe 47, which is connected to a bend 46. A second outlet 43 is located at the end of the outlet pipe 47 furthest from the first outlet 42, and one end of the outlet pipe 47 extends into the bend 46. After being blocked by the inner wall of the bend, the gas-liquid mixture of refrigerant flows in a direction that is not parallel to the axis of the outlet pipe 47. It flows through the outer wall of the portion of the outlet pipe 47 that extends into the bend 46. Due to its low density and low inertia, the gaseous refrigerant changes its flow direction. At the same time, under the action of gravity, the gaseous refrigerant floats up, while the liquid refrigerant sinks, resulting in the separation of more gaseous refrigerant. The separated gaseous refrigerant flows out from the outlet pipe 47.
[0054] The outlet pipe 47 has a second inlet 471 disposed opposite to the second outlet 43. The second inlet 471 is located inside the bend 46, and the end face of the second inlet 471 is inclined. The end face of the second inlet 471 near the first inlet 41 tends to extend towards the first outlet 42. That is, the inclined arrangement of the outlet pipe 47 inside the bend 46 increases the inlet area of the outlet pipe 47, and the inclination towards the first outlet 42 prevents liquid or gas-liquid mixed refrigerant from flowing into the outlet pipe 30.
[0055] The tilt angle β can be 10°, 20°, 30°, 45°, 50°, 60°, 70°, 80° or other acute angles.
[0056] The distance between the end of the outlet pipe 47 near the first outlet 42 and the end face of the first outlet 42 is less than the minimum distance between the inner wall of the first inlet 41 and the end face of the first outlet 42. That is, the lowest end of the second inlet 471 is lower than the lower inner wall of the first inlet 41, so that the outer wall of the part of the outlet pipe 47 extending into the bend pipe 46 can fully separate the refrigerant entering the first inlet 41 into gas and liquid.
[0057] Please see Figure 7 The present invention also provides a refrigeration system 1000, including a system body 200 and the above-mentioned gas-liquid separation device 100. The first inlet 41 of the gas-liquid separation device 100 is connected to the system body 200, and one end of the merging component 50 is connected to the system body 200.
[0058] Specifically, the system body 200 includes an evaporator 210, a condenser 220, an expansion valve 230, and a compressor 240. A first inlet 41 is connected to the outlet of the evaporator 210. One end of the confluence assembly 50 is connected to the inlet of the compressor 240. The outlet of the compressor 240 is connected to the inlet of the condenser 220. The outlet of the condenser 220 is connected to the inlet of the expansion valve 230. The outlet of the expansion valve 230 is connected to the inlet of the evaporator 210. Of course, the connections between the various components of the system body 200 can be direct or indirect. For example, the system body 200 may also include other components such as a liquid receiver and a filter. The liquid receiver is connected between the condenser 220 and the expansion valve 230.
[0059] During operation, the gas-liquid mixture of refrigerant enters the piping assembly 40 through the first inlet 41. Part of the gaseous refrigerant, under the influence of gravity, impacts from the non-linear flow of the inner wall, centrifugal force from the bend, or impacts from the baffle 45, separates from the liquid refrigerant due to differences in density and inertia. The separated gaseous refrigerant flows into the confluence assembly 50 through the second outlet 43. The mixed and liquid refrigerant continue to flow. Because the first inlet 41 is higher than the first outlet 42, some gaseous refrigerant separates from the gas-liquid mixture under gravity and flows out through the second outlet 43 into the confluence assembly 50. The remaining refrigerant enters the cylinder 10 through the inlet pipe 20 for further separation. The separated gaseous refrigerant flows out through the outlet pipe 30 into the confluence assembly 50, where it merges with the gaseous refrigerant flowing out of the second outlet 43 before entering the compressor 240. This invention reduces the volume requirement of the cylinder 10 by performing preliminary gas-liquid separation, thereby reducing the volume of the cylinder 10 of the gas-liquid separator and lowering costs.
[0060] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.
[0061] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.
Claims
1. A gas-liquid separation device, comprising a cylinder (10), an inlet pipe (20) and an outlet pipe (30), wherein one end of the inlet pipe (20) and the outlet pipe (30) respectively extends into the cylinder (10); Its features are, The gas-liquid separation device also includes a pipeline assembly (40) located outside the cylinder (10). The pipeline assembly (40) has a first inlet (41), a first outlet (42), and a second outlet (43). The first inlet (41) is used for the inflow of refrigerant. The first outlet (42) is connected to the other end of the inlet pipe (20) located outside the cylinder (10). The first inlet (41), the first outlet (42), and the second outlet (43) are interconnected within the pipeline assembly (40). When the gas-liquid separation device is installed vertically, the first inlet (41) is located above the first outlet (42), and the second outlet (43) is located above the first outlet (42). The angle θ between the orientation of the second outlet (43) and the orientation of the first outlet (42) is an obtuse angle.
2. The gas-liquid separation device according to claim 1, characterized in that, The pipeline assembly (40) includes a tee pipe (44), with the first inlet (41), the first outlet (42) and the second outlet (43) located at the three openings of the tee pipe (44); or, the pipeline assembly (40) includes a bend pipe (46), with the first inlet (41) and the first outlet (42) located at the two ends of the bend pipe (46).
3. The gas-liquid separation device according to claim 2, characterized in that, The piping assembly (40) includes a tee pipe (44) and a baffle plate (45) disposed inside the tee pipe (44). The baffle plate (45) is inclined and has a first end (451) and a second end (452) disposed opposite to each other. The first end (451) is connected to the inner wall of the tee pipe (44), and the second end (452) extends toward the second outlet (43) and the first inlet (41) and is spaced apart from the inner wall of the tee pipe (44). The angle α between the axis of the baffle plate (45) and the axis of the first inlet (41) is an acute angle.
4. The gas-liquid separation device according to claim 3, characterized in that, The first end (451) is flush with the central axis of the first inlet (41), and the distance between the second end (452) and the end face of the first outlet (42) is greater than the maximum value of the distance between the inner wall surface of the first inlet (41) and the end face of the first outlet (42).
5. The gas-liquid separation device according to claim 3, characterized in that, A notch (453) is formed between the baffle (45) and the inner wall of the three-way pipe (44). The ratio of the cross-sectional area of the notch (453) to the cross-sectional area of the three-way pipe (44) between the second outlet (43) and the baffle (45) is in the range of [10%, 100%].
6. The gas-liquid separation device according to claim 2, characterized in that, The piping assembly (40) includes a bend (46) and an outlet pipe (47) connected to the bend (46). The second outlet (43) is located at the end of the outlet pipe (47) away from the first outlet (42), and one end of the outlet pipe (47) extends into the bend (46).
7. The gas-liquid separation device according to claim 6, characterized in that, The distance between the end of the vent pipe (47) near the first outlet (42) and the end face of the first outlet (42) is less than the minimum distance between the inner wall of the first inlet (41) and the end face of the first outlet (42).
8. The gas-liquid separation device according to claim 6, characterized in that, The air outlet pipe (47) has a second inlet (471) disposed opposite to the second outlet (43). The second inlet (471) is located inside the bend pipe (46). The end face of the second inlet (471) is inclined. The end face of the second inlet (471) near the first inlet (41) tends to extend toward the first outlet (42).
9. The gas-liquid separation device according to claim 1, characterized in that, The gas-liquid separation device further includes a confluence component (50), which includes at least three connection ports, one of which is connected to the second outlet (43) and the other of which is connected to the outlet pipe (30).
10. A refrigeration system, characterized in that, The system includes a main body (200) and a gas-liquid separation device according to any one of claims 1-9, wherein the first inlet (41) and the second outlet (43) are respectively connected to the main body (200).