Oil removal device for compressor

Abstract

The application provides a compressor oil removal device, and relates to the technical field of compressors. The compressor oil removal device is arranged on an exhaust pipe of a compressor to remove oil stains on the inner wall of the exhaust pipe. The compressor oil removal device comprises a pipe, an air guide member and an air source. The pipe is provided with an air inlet end and an air outlet end along the length direction of the pipe. The air guide member is connected to the pipe, and the air guide member partially extends into the pipe from the air outlet end. The air guide member and the inner wall of the pipe are provided with an air outlet gap at the air outlet end. The air source is arranged outside the pipe and is used for blowing air to the air inlet end. The compressor oil removal device can significantly improve the oil removal effect.

Description

Technical Field

[0001] This application relates to the field of compressor technology, and more specifically, to an oil removal device for compressors. Background Technology

[0002] As a core component in refrigeration and air conditioning systems, the compressor's operational stability directly affects the overall system performance. Existing compressors require periodic automatic lubrication during normal operation, but lubricating oil inevitably enters the exhaust pipe, leaving a large amount of oil residue on its inner surface. This residue can affect subsequent piping welding processes.

[0003] Currently, the common approach to addressing oil residue in exhaust pipes is physical adsorption, such as manually wiping the inner wall of the exhaust pipe with materials like wool felt or oil-absorbing paper. However, the limited adsorption capacity of these materials results in poor oil removal. Summary of the Invention

[0004] The purpose of this application includes, for example, providing an oil removal device for a compressor that can significantly improve the oil removal effect.

[0005] The embodiments of this application can be implemented as follows:

[0006] Embodiments of this application provide an oil removal device for a compressor, used to remove oil stains from the inner wall of the compressor's exhaust pipe, comprising:

[0007] The pipe fitting has an air inlet and an air outlet along its length.

[0008] An air guide is connected to the pipe, and a portion of the air guide extends into the pipe from the air outlet end. An air outlet gap is provided between the air guide and the inner wall of the pipe at the air outlet end.

[0009] An air source is provided outside the pipe fitting and is used to blow air to the air inlet.

[0010] Optionally, the air guide includes a first cone and a second cone connected together, the central axes of the first cone, the second cone, and the pipe are coincident, and in the direction from the air inlet end to the air outlet end, the diameter of the first cone gradually increases and the diameter of the second cone gradually decreases;

[0011] The first cone is connected to the pipe fitting, and the first cone portion extends into the pipe fitting from the air outlet end. The air outlet gap is provided between the first cone and the inner wall of the pipe fitting at the air outlet end.

[0012] Optionally, the diameter at the connection between the first cone and the second cone is larger than the outer diameter of the pipe fitting.

[0013] Optionally, the distance by which the outer edge of the connection between the first cone and the second cone extends beyond the outer wall of the pipe fitting is 0.5~1mm.

[0014] Optionally, the first cone and the second cone are integrally formed.

[0015] Optionally, both the end of the first cone away from the second cone and the end of the second cone away from the first cone are dome structures.

[0016] Optionally, the oil removal device for the compressor further includes a positioning element, which is used to fix the compressor's exhaust pipe, and the pipe fitting is slidably connected to the positioning element;

[0017] When the positioning member is fixed to the exhaust pipe, the central axis of the member coincides with the central axis of the exhaust pipe.

[0018] Optionally, the pipe fitting is provided with a fixing rod, which is inserted, welded, or integrally formed with the air guide.

[0019] Optionally, the width of the air outlet gap is 0.2~0.4mm.

[0020] Optionally, both the pipe fittings and the air guides are made of metal.

[0021] The beneficial effects of the compressor oil removal device provided in this application include, for example, that when the gas input from the gas source enters the pipe and reaches the air outlet gap between the air guide and the inner wall of the pipe, the flow velocity increases, thereby forming an annular airflow. This airflow can effectively act on the inner wall of the exhaust pipe, blowing residual oil stains along the pipe wall direction into the compressor. Compared with the traditional method of manually wiping oil stains, this compressor oil removal device avoids cleaning blind spots caused by the limitations of cleaning tool materials, and at the same time achieves a continuous oil removal process through airflow, significantly improving oil removal efficiency and effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a cross-sectional view of the oil removal device for the compressor in an embodiment of this application;

[0024] Figure 2 This is a partial cross-sectional view of the oil removal device for the compressor in an embodiment of this application;

[0025] Figure 3 This is a cross-sectional view showing the oil removal device for the compressor assembled on the compressor in an embodiment of this application.

[0026] Icons: 100-pipe fitting; 110-air inlet; 120-air outlet; 130-fixed rod; 200-air guide; 210-first cone; 211-dome structure; 220-second cone; 300-air outlet gap; 400-positioning component; 500-compressor; 510-exhaust pipe. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0032] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0033] After automatic oiling, existing compressors often have a large amount of residual oil stains inside the exhaust pipe, especially at the exhaust pipe opening, which affects the reliability of subsequent welding processes. Currently, the main solution is manual wiping with wool felt or oil-absorbing paper. However, due to the softness of wool felt, its cleaning effect is poor, leading to persistent oil residue. Furthermore, due to the ineffective oil removal, oil stains may be ejected from the exhaust pipe during the removal of the rubber stopper due to internal air pressure, leaving oil residue at the exhaust pipe opening.

[0034] The embodiments of this application provide an oil removal device for a compressor. This oil removal device introduces an airflow blowing mechanism and uses the adjustment of the gas flow path to form an accelerated airflow, thereby blowing the oil stains on the inner wall of the exhaust pipe into the compressor, achieving efficient and relatively thorough oil removal.

[0035] Please refer to Figures 1-3 The oil removal device for compressors provided in the embodiments of this application is used to remove oil stains from the inner wall of the exhaust pipe 510 of the compressor 500. The oil removal device for compressors includes a pipe 100, a guide 200 and an air source. The pipe 100 is provided with an air inlet 110 and an air outlet 120 along its own length direction. The guide 200 is connected to the pipe 100, and part of the guide 200 extends into the pipe 100 from the air outlet 120. The guide 200 and the inner wall of the pipe 100 are provided with an air outlet gap 300 at the air outlet 120. The air source is provided outside the pipe 100 and is used to blow air to the air inlet 110.

[0036] The pipe fitting 100 has an air inlet end 110 and an air outlet end 120 along its length to form a gas flow path; part of the structure of the air guide 200 extends into the interior of the pipe fitting 100 from the air outlet end 120, thereby forming an air outlet gap 300 between the air guide 200 and the inner wall of the pipe fitting 100 at the air outlet end 120; the air source is set outside the pipe fitting 100 and is used to blow air to the air inlet end 110, so that the gas flows from the air inlet end 110 to the air outlet end 120 and is finally ejected quickly through the air outlet gap 300.

[0037] When the gas input from the air source enters the pipe 100 and reaches the outlet gap 300 between the air guide 200 and the inner wall of the pipe 100, the flow velocity increases, thus forming an annular airflow. This airflow can effectively act on the inner wall of the exhaust pipe 510, blowing residual oil stains along the pipe wall direction into the compressor 500. Compared with the traditional method of manually wiping oil stains, this compressor's oil removal device avoids cleaning blind spots caused by the limitations of cleaning tool materials. At the same time, it achieves a continuous oil removal process through airflow, significantly improving oil removal efficiency and effect.

[0038] In some embodiments, the air guide 200 includes a first cone 210 and a second cone 220 connected to each other. The central axes of the first cone 210, the second cone 220, and the pipe 100 coincide. In the direction from the air inlet end 110 to the air outlet end 120, the diameter of the first cone 210 gradually increases and the diameter of the second cone 220 gradually decreases. The first cone 210 is connected to the pipe 100, and a portion of the first cone 210 extends into the pipe 100 from the air outlet end 120. An air outlet gap 300 is provided between the first cone 210 and the inner wall of the pipe 100 at the air outlet end 120.

[0039] The connection between the first cone 210 and the second cone 220 is provided with rounded corners, forming a smooth transition connection. The central axes of the first cone 210, the second cone 220, and the pipe 100 coincide with each other to ensure that the entire air guide 200 is in the center position inside the pipe 100, so as to form a stable annular airflow through the air outlet gap 300.

[0040] The diameter of the first cone 210 gradually increases from the air inlet 110 towards the air outlet 120, forming a cone shape that gradually expands from a smaller diameter to a larger diameter. Conversely, the diameter of the second cone 220 gradually decreases in its extension direction, i.e., as it extends away from the first cone 210, forming a reverse cone shape. The structure composed of the first cone 210 and the second cone 220 forms a spindle shape, which helps to smoothly guide the airflow as it passes through the air guide 200.

[0041] Part of the structure of the first cone 210 extends into the interior of the pipe 100 from the air outlet 120 and connects with the pipe 100, thereby forming an air outlet gap 300 at the air outlet 120 between the first cone 210 and the inner wall of the pipe 100. This air outlet gap 300 serves as the final channel for airflow discharge. Its existence ensures that the airflow introduced by the air source can pass through the air outlet gap 300 at a relatively fast speed after passing through the air guide path inside the pipe 100, and act on the inner wall of the exhaust pipe 510 to achieve the effect of blowing away oil stains.

[0042] This design allows the air guide 200 to effectively guide the airflow direction and form an annular air curtain around the air guide 200 outside the air outlet 120 of the pipe 100, increasing the airflow velocity and concentration in the area of ​​the air outlet 120 of the pipe 100, thereby enhancing the oil removal efficiency. In addition, the continuous transition structure between the first cone 210 and the second cone 220 can reduce the resistance encountered by the airflow during the flow process, further improving the stability of the airflow.

[0043] In some embodiments, the diameter at the connection between the first cone 210 and the second cone 220 is greater than the outer diameter of the pipe 100.

[0044] The connection between the first cone 210 and the second cone 220 is located outside the air outlet 120 of the pipe fitting 100. The diameter of the connection between the first cone 210 and the second cone 220 is larger than the outer diameter of the pipe fitting 100 itself, so that the outer edge of the connection between the first cone 210 and the second cone 220 extends beyond the outer wall of the pipe fitting 100. When the entire compressor oil removal device is performing oil removal operation on the exhaust pipe 510 and the pipe fitting 100 is gradually extended into the exhaust pipe 510, the air outlet 120 of the pipe fitting 100 will not contact or interfere with the inner wall of the exhaust pipe 510, thus preventing jamming and improving the smoothness of the entire oil removal process.

[0045] During the process of inserting the oil removal device for the compressor into the exhaust pipe 510, the air guide 200 enters the exhaust pipe 510 before the pipe 100. Since the diameter of the connection between the first cone 210 and the second cone 220 is larger than the outer diameter of the pipe 100, if the oil removal device for the compressor is offset to a certain extent, it is the connection between the first cone 210 and the second cone 220 that contacts the wall of the exhaust pipe 510, rather than the air outlet 120 of the pipe 100 contacting the inner wall of the exhaust pipe 510. Since the connection between the first cone 210 and the second cone 220 is a smooth transition connection, it is not likely to cause significant obstruction to the overall movement of the oil removal device for the compressor.

[0046] In an optional embodiment, the distance D1 at which the outer edge of the connection between the first cone 210 and the second cone 220 extends beyond the outer wall of the pipe fitting 100 is 0.5~1mm.

[0047] The first cone 210 and the second cone 220 form the point of maximum outer diameter in the overall structure of the air guide 200 at the connection point. The outer edge of the connection point of the first cone 210 and the second cone 220 extends beyond the outer wall of the pipe 100, and the distance of the extension beyond the pipe 100 is controlled within the range of 0.5 to 1 mm.

[0048] During the insertion of the oil removal device for the compressor into the exhaust pipe 510, the outer edge of the connection between the first cone 210 and the second cone 220 is located outside the fitting 100, and its diameter is slightly larger than the outer diameter of the fitting 100. This prevents the outlet end 120 of the fitting 100 from directly contacting and interfering with the inner wall of the exhaust pipe 510. At the same time, the diameter of the connection between the first cone 210 and the second cone 220 should not be too large; otherwise, the excessive protrusion of the connection may affect the overall insertion smoothness of the device and the stability of its operation.

[0049] In an optional embodiment, the first cone 210 and the second cone 220 are integrally formed.

[0050] The first cone 210 and the second cone 220 are directly integrally formed through processing technology. The integral forming method can be achieved by manufacturing means such as casting, forging, and 3D printing, which helps to ensure that the air guide 200 achieves optimal state in terms of structural integrity, mechanical performance and airflow guidance consistency.

[0051] In the direction from the air inlet 110 to the air outlet 120, the diameter of the first cone 210 gradually increases, while the diameter of the second cone 220 gradually decreases, forming a continuously transitioning spindle-shaped structure. Manufacturing this structure using a one-piece molding technology not only avoids potential connection gaps or assembly deviations in traditional spliced ​​structures but also effectively improves the overall strength and durability of the air guide 200, significantly extending the device's service life, especially in frequently used industrial environments.

[0052] This design ensures greater mechanical stability in the transition area between the first cone 210 and the second cone 220, preventing device failure caused by structural loosening or breakage due to splicing. Simultaneously, the one-piece molding structure helps improve the smoothness of the air guide 200 surface, thereby optimizing airflow around the air guide 200 and improving oil removal efficiency.

[0053] In an optional embodiment, the end of the first cone 210 away from the second cone 220 and the end of the second cone 220 away from the first cone 210 are both dome structures 211.

[0054] The dome structure 211 refers to the arc-shaped or hemispherical end face formed at the end portion in the extension direction of the cone. The dome structure 211 design mainly optimizes the flow of air in the end region of the air guide 200. By setting the end of the first cone 210 away from the second cone 220 and the end of the second cone 220 away from the first cone 210 as dome shape, the local resistance of the airflow when passing through the end of the air guide 200 can be effectively reduced, thereby improving the smoothness and guiding efficiency of the overall airflow.

[0055] As gas enters the pipe 100 from the inlet 110 and flows around the guide 200, the airflow passes through the composite structure formed by the first cone 210 and the second cone 220, and is discharged through the outlet gap 300 at the outlet 120. During this process, the ends of the first cone 210 and the second cone 220 serve as transition areas in the airflow path, and their shapes directly affect the flow state of the airflow. By adopting the dome structure 211, the airflow can achieve a smoother flow when passing through the ends of the cones, avoiding obstruction of airflow due to abrupt end shapes.

[0056] The dome structure 211 design enables the compressor's oil removal device to maintain a high airflow velocity and uniformity during operation, thereby enhancing its ability to remove oil stains from the inner wall of the exhaust pipe 510.

[0057] In an optional embodiment, the oil removal device for the compressor further includes a positioning member 400, which is used to fix the exhaust pipe 510 of the compressor 500. The pipe 100 is slidably connected to the positioning member 400. When the positioning member 400 is fixed to the exhaust pipe 510, the central axis of the pipe 100 coincides with the central axis of the exhaust pipe 510.

[0058] The positioning component 400 can be snapped or fixed to the exhaust pipe 510. When the positioning component 400 is fixed to the exhaust pipe 510 of the compressor 500, the central axis of the pipe component 100 coincides with the central axis of the exhaust pipe 510. At this time, the pipe component 100 can be slid relative to the positioning component 400 to move the entire oil removal device for the compressor along the central axis of the exhaust pipe 510. The pipe component 100 and the air guide component 200 are not prone to displacement during the movement. The positioning component 400 can position the entire oil removal device for the compressor, which helps to improve the stability of the movement of the pipe component 100 and the air guide component 200, and thus helps to improve the oil removal effect.

[0059] In addition, the pipe fitting 100 can be fixedly connected to an external lifting device (such as a miniature lift), so that after the positioning member 400 is fixed to the exhaust pipe 510 of the compressor 500, the lifting device can be used to drive the pipe fitting 100 to move, so that the oil removal device for the compressor can realize automated oil removal operation.

[0060] In an optional embodiment, a fixing rod 130 is provided on the pipe fitting 100, and the fixing rod 130 is inserted, welded or integrally formed with the air guide 200.

[0061] The function of the fixing rod 130 is to provide a stable installation support point for the air guide 200, ensuring that the relative position of the air guide 200 and the pipe 100 remains fixed. One end of the fixing rod 130 is connected to the pipe 100, and the other end is used to connect to the air guide 200. The extension direction of the fixing rod 130 can be inclined relative to the central axis of the pipe 100.

[0062] The first cone 210 extends into the pipe fitting 100 from the air outlet 120 and connects to the fixing rod 130. The connection methods between the first cone 210 and the fixing rod 130 include, but are not limited to, plug-in, welding, or integral molding. Among them, the plug-in method is convenient for disassembly and replacement, and is suitable for application scenarios that require regular maintenance or replacement of the air guide 200. For example, the fixing rod 130 can be inserted into the pipe fitting 100 from the outside and plug-in with the first cone 210. A seal is provided at the joint between the fixing rod 130 and the pipe fitting 100 to prevent air leakage. The welding method can provide higher connection strength and is suitable for applications with high requirements for structural stability. The integral molding method is to process the fixing rod 130 and the air guide 200 as a whole structure during the manufacturing process. In this case, the fixing rod 130 can be directly integrally molded into the pipe fitting 100, which helps to improve the overall structural rigidity of the device.

[0063] The air guide 200 can be firmly connected to the pipe 100 through the fixing rod 130, thereby maintaining a stable structural shape during the operation of the oil removal device for the compressor, avoiding displacement of the air guide 200 due to airflow impact or mechanical vibration, and thus helping to ensure the uniformity of the air outlet and the stability of the airflow.

[0064] Multiple fixing rods 130 can be provided along the circumference and / or axial direction of the pipe fitting 100. All fixing rods 130 are fixedly connected to the first cone 210. For example, multiple sets of fixing rods 130 are provided along the axial direction of the pipe fitting 100, and multiple fixing rods 130 in each set are distributed along the circumference of the pipe fitting 100.

[0065] In an optional embodiment, the width D2 of the air outlet gap 300 is 0.2~0.4mm.

[0066] The air outlet gap 300 is the annular channel formed between the air outlet component 200 and the inner wall of the pipe component 100 in the air outlet 120 area. This channel is the only path for the airflow to finally exit the pipe component 100 and act on the inner wall of the exhaust pipe 510. The width D2 of the air outlet gap 300 directly affects the airflow velocity, pressure distribution and oil removal efficiency.

[0067] During the operation of the oil removal device for the compressor, the gas supplied by the air source enters the interior of the pipe 100 from the air inlet 110 and flows along the space between the air guide 200 and the pipe 100. Finally, it is quickly ejected through the air outlet gap 300, forming an annular air curtain. If the air outlet gap 300 is too wide, the airflow velocity will decrease, making it impossible to effectively blow away the oil stains adhering to the inner wall of the exhaust pipe 510. If the air outlet gap 300 is too narrow, it may cause excessive airflow resistance, increasing the burden on the air source. It may also cause gap blockage due to manufacturing errors or assembly deviations.

[0068] By controlling the width D2 of the air outlet gap 300 between 0.2 and 0.4 mm, this range can ensure that the airflow can still obtain sufficient flow velocity under the pressure of medium and low pressure air source (less than or equal to 10 MPa) to form a stable annular air curtain, so as to efficiently remove residual oil stains on the inner wall of the exhaust pipe 510.

[0069] In an optional embodiment, both the pipe 100 and the air guide 200 are made of metal.

[0070] Metallic materials include, but are not limited to, steel, aluminum alloys, and titanium alloys. The selection of these materials is primarily to meet the working environment and functional requirements of the oil removal device used in compressors during practical applications. Specifically, these requirements include frequent contact with oil stains, resistance to airflow impacts, a certain degree of structural rigidity, and long-term durability.

[0071] As the main channel for gas flow, the pipe 100 bears the continuous airflow pressure from the gas source and releases airflow through the air outlet gap 300 at the air outlet 120 to remove oil stains from the inner wall of the exhaust pipe 510. The air guide 200 plays a guiding and accelerating role in the airflow path. Its structural shape and surface finish directly affect the flow state of the airflow and the oil removal efficiency. Therefore, using metal materials to manufacture these two components can not only ensure that they maintain structural stability under the action of airflow and avoid affecting the airflow path due to material deformation or fatigue, but also extend the service life of the device.

[0072] In addition, the fixing rod 130 can also be made of metal. The high strength of metal helps to improve the connection reliability between the pipe 100 and the air guide 200, and prevents structural loosening caused by airflow impact or external mechanical vibration.

[0073] In summary, this application provides an oil removal device for a compressor, which includes a pipe 100, a guide vane 200, and an air source. When the gas input from the air source enters the pipe 100, its flow velocity increases when it reaches the air outlet gap 300 between the guide vane 200 and the inner wall of the pipe 100, thereby forming an annular airflow. This airflow can effectively act on the inner wall of the exhaust pipe 510, blowing residual oil stains into the compressor 500. Compared with the traditional method of manually wiping oil stains, this oil removal device for compressors avoids cleaning blind spots caused by the limitations of cleaning tool materials. At the same time, it achieves a continuous oil removal process through airflow, significantly improving the oil removal efficiency and effect.

[0074] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An oil removal device for a compressor, used in the exhaust pipe (510) of a compressor (500) to remove oil stains from the inner wall of the exhaust pipe (510), characterized in that, include: Pipe fitting (100), the pipe fitting (100) is provided with an air inlet (110) and an air outlet (120) along its own length direction. An air guide (200) is connected to the pipe (100), and part of the air guide (200) extends into the pipe (100) from the air outlet (120). The inner wall of the air guide (200) and the pipe (100) are provided with an air outlet gap (300) at the air outlet (120). An air source is provided outside the pipe fitting (100) and is used to blow air to the air inlet (110); The air guide (200) includes a first cone (210) and a second cone (220) connected to each other. The central axes of the first cone (210), the second cone (220) and the pipe (100) coincide. In the direction from the air inlet (110) to the air outlet (120), the diameter of the first cone (210) gradually increases and the diameter of the second cone (220) gradually decreases. The first cone (210) is connected to the pipe fitting (100), and part of the first cone (210) extends into the pipe fitting (100) from the air outlet end (120). The air outlet gap (300) is provided between the inner wall of the first cone (210) and the pipe fitting (100) at the air outlet end (120). The oil removal device for the compressor also includes a positioning element (400), which is used to fix the exhaust pipe (510) of the compressor (500), and the pipe fitting (100) is slidably connected to the positioning element (400); When the positioning member (400) is fixed to the exhaust pipe (510), the central axis of the pipe member (100) coincides with the central axis of the exhaust pipe (510).

2. The oil removal device for a compressor according to claim 1, characterized in that, The diameter at the connection between the first cone (210) and the second cone (220) is greater than the outer diameter of the pipe fitting (100).

3. The oil removal device for a compressor according to claim 2, characterized in that, The distance by which the outer edge of the connection between the first cone (210) and the second cone (220) extends beyond the outer wall of the pipe fitting (100) is 0.5~1mm.

4. The oil removal device for a compressor according to claim 1, characterized in that, The first cone (210) and the second cone (220) are integrally formed.

5. The oil removal device for a compressor according to claim 1, characterized in that, The end of the first cone (210) away from the second cone (220) and the end of the second cone (220) away from the first cone (210) are both dome structures (211).

6. The oil removal device for a compressor according to claim 1, characterized in that, A fixing rod (130) is provided on the pipe fitting (100), and the fixing rod (130) is inserted, welded or integrally formed with the air guide (200).

7. The oil removal device for a compressor according to claim 1, characterized in that, The width of the air outlet gap (300) is 0.2~0.4mm.

8. The oil removal device for a compressor according to claim 1, characterized in that, Both the pipe fitting (100) and the air guide (200) are made of metal.

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