Oil separator and refrigerating system thereof
By installing collision plates on the outer peripheral wall of the oil separator's outlet pipe, the vortex and turbulence of the refrigerant are enhanced, solving the problem of reduced refrigerant flow vortex, achieving efficient gas-liquid separation, and improving the operating efficiency of the refrigeration system.
Patent Information
- Application Number
- CN202520398342.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-07
AI Technical Summary
In existing oil separators, the refrigerant tends to bypass the arc-shaped outer wall of the outlet pipe after contacting it, resulting in reduced flow vortices, decreased air resistance, and minimal improvement in gas-liquid separation efficiency.
A collision plate is installed on the outer peripheral wall of the outlet pipe. After the refrigerant enters the chamber, it collides with the collision plate, increasing vortex and turbulence, increasing flow resistance, and causing lubricating oil to condense on the collision plate and the outlet pipe, thus achieving efficient gas-liquid separation.
By optimizing the structure of the collision plate, the separation efficiency of the oil separator is improved, ensuring that the lubricating oil flows back to the compressor and improving the operating efficiency of the refrigeration system.
Smart Images
Figure CN223896327U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of refrigeration system technology, and in particular to an oil separator and its refrigeration system. Background Technology
[0002] When an air conditioner compressor is running, it needs lubricating oil for lubrication. However, when the compressor discharges refrigerant, the lubricating oil will be discharged along with the refrigerant. This will increase the thermal resistance of the air conditioning system piping, reduce the heat transfer effect, and thus reduce the cooling or heating efficiency of the air conditioning system.
[0003] Therefore, an oil separator is installed between the compressor and condenser of the air conditioning system. The oil separator is used to separate the lubricating oil and refrigerant discharged from the compressor outlet, and the separated lubricating oil is returned to the compressor through the oil outlet pipe to ensure the operation of the compressor.
[0004] An oil separator typically includes a cylinder, an inlet pipe, an outlet pipe, and an oil outlet pipe. The oil outlet pipe is located at the bottom of the cylinder, and the outlet pipe is located at the top of the cylinder. The inlet pipe passes through the side wall of the cylinder and injects refrigerant into the cylinder. After separation, the separated lubricating oil flows to the oil outlet pipe, while the gaseous refrigerant flows out from the outlet pipe. To improve the separation effect of the oil separator, some oil separators are designed so that the inlet pipe faces the outlet pipe, causing the refrigerant entering the cylinder from the inlet pipe to collide with the outer wall of the outlet pipe, thus achieving oil-gas separation. However, because the wall of the outlet pipe is arc-shaped, the refrigerant, after contacting the outlet pipe, is easily guided around the outlet pipe by the arc-shaped outer wall, thus forming a streamlined flow path. Therefore, the flow vortex is reduced, and the air resistance is lowered, resulting in poor collision effect between the refrigerant and the outlet pipe, and the improvement in gas-liquid separation efficiency is minimal. Utility Model Content
[0005] To address the aforementioned technical problems, this utility model provides an oil separator.
[0006] An oil separator includes: a cylindrical body with a hollow interior forming a chamber, and a first connecting hole at one end of the cylindrical body along its axial direction; an outlet pipe, one end of which extends into the chamber through the first connecting hole, the portion of the outlet pipe within the chamber forming a first pipe segment; and an inlet pipe, one end of which extends into the chamber through a second connecting hole located on the side wall of the cylindrical body, the portion of the inlet pipe within the chamber forming a second pipe segment, the outlet end of the second pipe segment facing the outer wall of the first pipe segment and spaced apart from the first pipe segment, along its axial direction; wherein at least one collision plate is further provided on the outer wall of the first pipe segment, the collision plate being angled to the axis of the second pipe segment, defining a first plane perpendicular to the axis of the second pipe segment, and the projections of the outlet end of the second pipe segment and the outer wall of the first pipe segment onto the first plane at least partially overlapping.
[0007] With this configuration, the oil-gas mixture of refrigerant enters the chamber inside the cylinder through the inlet pipe, where gas-liquid separation is completed. The gaseous refrigerant flows out through the outlet pipe and the first connecting hole. The axis of the second pipe section is perpendicular to and intersects the axis of the first pipe section. Therefore, the refrigerant entering the chamber from the second pipe section will collide with the first pipe section and undergo oil-gas separation, thereby improving the separation efficiency of the oil separator. Because the collision plate is set at an angle to the axis of the second pipe section, the refrigerant entering the chamber along the opening direction of the second pipe section (i.e., the axial direction of the second pipe section) will collide with the collision plate, increasing the vortex and turbulence of the refrigerant flow, thereby increasing its flow resistance. This makes it easier for liquid lubricating oil to condense on the collision plate and the first pipe section, separating from the gaseous refrigerant, thus improving the separation efficiency.
[0008] In one embodiment, the collision plate is arranged perpendicular to the axis of the second pipe segment, and the outlet end of the second pipe segment and the projection of the collision plate on the first plane overlap.
[0009] In one embodiment, the collision plate extends radially to both sides of the outer wall of the first pipe segment, or the collision plate is respectively provided on both sides of the outer wall of the first pipe segment.
[0010] In one embodiment, the maximum distance between the collision plate or two adjacent collision plates in the width direction along the radial direction of the first pipe segment is d, and the inner diameter of the cylinder is D, satisfying d≤0.5D.
[0011] In one embodiment, the collision plate is connected to the first pipe segment and disposed close to the air intake pipe, and the collision plate is tangentially connected to the outer peripheral wall of the first pipe segment.
[0012] In one embodiment, the impact plate extends along the axis of the first pipe segment, and one end of the impact plate extends to the side of the second pipe segment near the first connecting hole.
[0013] In one embodiment, the collision plate extends from the other end away from the first connecting hole to the outlet end of the first pipe segment.
[0014] In one embodiment, the axis of the outlet end of the second pipe segment intersects the axis of the first pipe segment, and the outlet end of the second pipe segment faces the first pipe segment.
[0015] In one embodiment, the collision plate is configured as a straight plate, and both sides of the collision plate in the thickness direction are rectangular; or,
[0016] The collision plate is configured as an arc-shaped plate structure, and the cross-section of the collision plate is wavy along the thickness direction of the collision plate.
[0017] This utility model also includes a refrigeration system, comprising the oil separator described above.
[0018] This invention improves the gas-liquid separation efficiency of refrigerant by setting a collision plate on the first pipe section located inside the cylinder and optimizing the structure of the collision plate. This allows oil droplets to condense on the first pipe section and the collision plate, thus completing the separation work of the oil separator. Attached Figure Description
[0019] Figure 1 A schematic diagram of one embodiment of the oil separator provided by this utility model;
[0020] Figure 2 A partial structural schematic diagram of one embodiment of the oil separator provided by this utility model;
[0021] Figure 3 This is a cross-sectional view of one embodiment of the oil separator provided by this utility model.
[0022] The symbols in the diagram represent the following meanings:
[0023] 100. Oil separator; 10. Cylinder; 11. Chamber; 12. First connecting hole; 13. Second connecting hole; 14. Third connecting hole; 20. Air outlet pipe; 21. First pipe section; 30. Air inlet pipe; 31. Second pipe section; 40. Oil outlet pipe; 50. Collision plate. Detailed Implementation
[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application 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 application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0025] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.
[0026] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0027] In this application, unless otherwise expressly 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," "over," and "on top" 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.
[0028] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.
[0029] This utility model provides an oil separator 100, in which a collision plate 50 is provided on the outer peripheral wall of the air outlet pipe 20 located in the chamber 11. The collision plate 50 increases the collision area, allowing more oil droplets to condense and improving the separation rate.
[0030] Please see Figures 1-3 The oil separator 100 includes a cylinder 10, an inlet pipe 30, and an outlet pipe 20. The cylinder 10 is hollow, forming a chamber 11. Along the axial direction of the cylinder 10, one end of the cylinder 10 has a first connecting hole 12. One end of the outlet pipe 20 extends into the chamber 11 through the first connecting hole 12. The portion of the outlet pipe 20 within the chamber 11 is a first pipe section 21. One end of the inlet pipe 30 extends into the chamber 11 through a second connecting hole 13 located on the side wall of the cylinder 10. The portion of the inlet pipe 30 within the chamber 11 is a second pipe section 31. The outlet end of the second pipe section 31 faces the outer wall of the first pipe section 21 and is spaced apart from it. A first plane is defined perpendicular to the axis of the second pipe section 31. The projection of the outlet end of the second pipe section 31 and the outer wall of the first pipe section 21 on the first plane at least partially overlaps. Thus, the oil-gas mixture refrigerant enters the chamber 11 inside the cylinder 10 from the inlet pipe 30 and completes gas-liquid separation in the chamber 11. The gaseous refrigerant flows out through the outlet pipe 20 and the first connecting hole 12. The axis of the second pipe section 31 is perpendicular to and intersects the axis of the first pipe section 21. Therefore, the refrigerant entering the chamber 11 from the second pipe section 31 will collide with the first pipe section 21 and undergo oil-gas separation, thereby improving the separation efficiency of the oil separator 100.
[0031] At least one collision plate 50 is also provided on the outer wall of the first pipe section 21. The collision plate 50 is set at an angle to the axis of the second pipe section 31 and can block the refrigerant from entering the chamber 11 through the intake pipe 30. Thus, since the collision plate 50 is set at an angle to the axis of the second pipe section 31, the refrigerant will collide with the collision plate 50 after entering the chamber 11 along the opening direction of the second pipe section 31 (that is, the axial direction of the second pipe section 31). This increases the vortex and turbulence of the refrigerant flow, thereby increasing its flow resistance. This makes it easier for liquid lubricating oil to condense on the collision plate 50 and the first pipe section 21 and separate from the gaseous refrigerant, thereby improving the separation efficiency.
[0032] It should be explained that the first pipe section 21 and the second pipe section 31 are both parts that are completely inside the chamber 11. The parts where the exhaust pipe 20 is welded to the cylinder 10 and the parts where the intake pipe 30 is welded to the cylinder 10 do not belong to the first pipe section 21 and the second pipe section 31.
[0033] The oil separator 100 also includes an oil outlet pipe 40, which is connected to the bottom of the cylinder 10 and communicates with the chamber 11 through the third connecting hole 14. After the refrigerant completes gas-liquid separation, the liquid oil droplets flow to the bottom of the cylinder 10 due to gravity and flow out of the oil separator 100 through the oil outlet pipe 40.
[0034] Furthermore, the collision plate 50 is positioned perpendicular to the axis of the second pipe section 31, and the projection of the collision plate 50 onto the first plane overlaps with the outlet end of the second pipe section 31. In this way, the refrigerant flowing along the axis of the second pipe section 31 impacts the front of the collision plate 50, thereby achieving a better separation effect.
[0035] Of course, in other embodiments, the collision plate 50 can also be set at an angle to the second pipe section 31. The collision between the inclined collision plate 50 and the refrigerant can also improve the gas-liquid separation efficiency of the refrigerant. For example, the collision plate 50 is inclined toward the second pipe section 31 in a direction away from the first pipe section 21. That is, the end of the collision plate 50 away from the first pipe section 21 is closer to the second pipe section 31 than the end of the collision plate 50 that is closer to the first pipe section 21. Therefore, after the refrigerant hits the collision plate 50, it will condense and be guided by the collision plate 50 to flow toward the first pipe section 21 and hit the pipe wall of the first pipe section 21 to form a second condensation.
[0036] In another embodiment provided in this application, the collision plate 50 is connected to the first pipe section 21 and is disposed close to the intake pipe 30 and is tangential to the outer peripheral wall of the first pipe section 21. The collision plate 50 disposed in this way is closer to the intake pipe 30, and its collision effect with the refrigerant is more direct.
[0037] Furthermore, along the radial direction of the first pipe segment 21, the collision plate 50 extends to both sides of the outer wall of the first pipe segment 21, or collision plates 50 are respectively provided on both sides of the outer wall of the first pipe segment 21, with both collision plates 50 located on the first plane. The two collision plates 50 arranged in this way are located on the same plane and are respectively connected to opposite sides of the first pipe segment 21, and are symmetrically arranged, so the blocking effect on the refrigerant is more uniform, and the liquid separation effect is also more uniform.
[0038] Preferably, the axis of the outlet end of the second pipe section 31 intersects the axis of the first pipe section 21, and the outlet end of the second pipe section 31 is directly opposite the first pipe section 21. This allows the refrigerant to impact the exact center of the first pipe section 21.
[0039] Of course, it is understandable that the collision plates 50 on both sides of the first pipe section 21 may not be set on the same plane. For example, one collision plate 50 may be set perpendicular to the axis of the second pipe section 31, and the other may be set at an angle to the axis of the second pipe section 31. In other words, the two collision plates 50 are set at an angle, which can also play the role of blocking the refrigerant and improving the separation efficiency.
[0040] Specifically, along the radial direction of the first pipe section 21, the maximum distance between the collision plates 50 or the two collision plates 50 in the width direction is d, and the inner diameter of the cylinder 10 is D, satisfying d≤0.5D. In this way, it is ensured that the collision plates 50 do not occupy too much space in the chamber 11, preventing pressure drop problems in the oil separator 100.
[0041] To ensure that the refrigerant will inevitably impact the collision plate 50 after entering the chamber 11 from the second pipe section 31, in this embodiment, the collision plate 50 is arranged to extend along the axis of the first pipe section 21, with one end of the collision plate 50 extending to the side of the second pipe section 31 near the first connecting hole 12. Since the refrigerant is in a gas-liquid mixed state, it will inevitably descend after entering the chamber 11, so the collision plate 50, arranged in this way, will definitely be able to stop the refrigerant.
[0042] Furthermore, the end of the collision plate 50 away from the first connecting hole 12 extends to the outlet end of the first pipe section 21, away from the first connecting hole 12. Thus, when oil droplets condense on the collision plate 50, they will be acted upon by gravity and flow downwards along the extension direction of the collision plate 50. Since the collision plate 50 extends to the outlet end of the first pipe section 21, away from the first connecting hole 12, it means the collision plate 50 extends to a position lower than the first pipe section 21 before dripping, preventing secondary oil droplets from flowing out of the outlet pipe 20 during the gas discharge process, thus avoiding compressor liquid slugging problems.
[0043] Furthermore, in this embodiment, the collision plate 50 is configured as a straight plate structure, and both sides of the collision plate 50 are rectangular. In other embodiments, the collision plate 50 can also be configured as a triangular plate, a circular plate, or other structures, and is not limited to a straight plate structure. Alternatively, the collision plate 50 can be configured as an arc-shaped plate structure, and along the thickness direction of the collision plate 50, the cross-section of the collision plate 50 is wavy.
[0044] This utility model also provides a refrigeration system, including the oil separator 100 as described above.
[0045] This invention provides a collision plate 50 on the first pipe section 21 inside the cylinder 10 of the outlet pipe 20. By optimizing the structure of the collision plate 50, the impact area of the refrigerant in a gas-liquid mixture carrying lubricating oil is increased, thereby improving the gas-liquid separation efficiency of the refrigerant. This allows oil droplets to condense on the first pipe section 21 and the collision plate 50, thus completing the separation work of the oil separator 100.
[0046] The technical features of the above 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.
[0047] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An oil separator, characterized in that, include: The cylindrical body (10) has a hollow interior forming a cavity (11), and a first connecting hole (12) is provided at one end of the cylindrical body (10) along the axial direction of the cylindrical body (10). An exhaust pipe (20) is provided, one end of which extends into the chamber (11) through the first connecting hole (12), and the portion of the exhaust pipe (20) located in the chamber (11) is the first pipe section (21). An air inlet pipe (30) is provided, one end of which extends into the chamber (11) through a second connecting hole (13). The second connecting hole (13) is located on the side wall of the cylinder (10). The portion of the air inlet pipe (30) located in the chamber (11) is a second pipe section (31). The outlet end of the second pipe section (31) faces the outer wall of the first pipe section (21) and is spaced apart from the first pipe section (21). Among them, at least one collision plate (50) is provided on the outer wall of the first pipe section (21). The collision plate (50) is set at an angle to the axis of the second pipe section (31) and defines a first plane perpendicular to the axis of the second pipe section (31). The projection of the outlet end of the second pipe section (31) and the collision plate (50) on the first plane at least partially overlaps.
2. The oil separator according to claim 1, characterized in that, The collision plate (50) is arranged perpendicular to the axis of the second pipe section (31), and the projection of the outlet end of the second pipe section (31) and the collision plate (50) on the first plane overlaps.
3. The oil separator according to claim 1 or 2, characterized in that, Along the radial direction of the first pipe segment (21), the collision plate (50) extends to both sides of the outer wall of the first pipe segment (21), or the collision plate (50) is respectively provided on both sides of the outer wall of the first pipe segment (21).
4. The oil separator according to claim 3, characterized in that, Along the radial direction of the first pipe section (21), the maximum distance between the collision plate (50) or two adjacent collision plates (50) in the width direction is d, and the inner diameter of the cylinder (10) is D, satisfying d≤0.5D.
5. The oil separator according to claim 3, characterized in that, The collision plate (50) is connected to the first pipe section (21) and is disposed near the air intake pipe (30). The collision plate (50) is tangentially connected to the outer peripheral wall of the first pipe section (21).
6. The oil separator according to any one of claims 1-5, characterized in that, The collision plate (50) extends along the axis of the first pipe segment (21), and one end of the collision plate (50) extends to the side of the second pipe segment (31) near the first connecting hole (12).
7. The oil separator according to claim 6, characterized in that, The collision plate (50) extends from the other end away from the first connecting hole (12) to the outlet end of the first pipe section (21).
8. The oil separator according to any one of claims 1-5, characterized in that, The axis of the outlet end of the second pipe section (31) intersects the axis of the first pipe section (21) and the outlet end of the second pipe section (31) is directly opposite the first pipe section (21).
9. The oil separator according to claim 8, characterized in that, The collision plate (50) is configured as a straight plate, and both sides of the collision plate (50) in the thickness direction are configured as rectangles; or, The collision plate (50) is configured as an arc-shaped plate structure, and the cross-section of the collision plate (50) is wavy along the thickness direction of the collision plate (50).
10. A refrigeration system, characterized in that, Including the oil separator as described in any one of claims 1-9.