Oil and gas separator and compressor having same

Abstract

The application provides an oil-gas separator and a compressor with the same, wherein the oil-gas separator comprises a shell with an oil storage cavity and an air inlet communicating with each other, so that air flow enters the oil storage cavity from the air inlet; a separation structure is rotatably arranged at the air inlet, and the separation structure has a separation cavity penetrating through two ends of the separation structure, so that the air flow in the oil storage cavity is separated through the separation structure and discharged from the separation cavity; at least part of the outer wall of the separation structure is provided with an outer blade structure, at least part of the inner wall of the separation cavity is provided with an inner blade structure, and the outer blade structure and the inner blade structure drive the separation structure to rotate around a preset axis under the pushing of the air flow. The application solves the problem of poor oil-gas separation effect of the oil-gas separator in the scroll compressor in the prior art.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to an oil-gas separator and a compressor having the same. Background Technology

[0002] Currently, scroll compressors are widely used in residential and commercial refrigeration systems due to their high efficiency, reliability, and compact design. The working principle of a scroll compressor is based on the relative motion of a moving scroll and a stationary scroll. The stationary scroll is stationary, while the moving scroll rotates. The two scrolls mesh to form a compression chamber. As the moving scroll rotates, the compression chamber gradually decreases in size, compressing the gas inside. The compressed gas is then discharged through the exhaust port to drive the refrigeration system. However, the compressed high-pressure gas easily contains refrigerant oil. This oil can enter the high-pressure buffer zone through the exhaust port of the stationary scroll and be discharged from the compressor along with the gas. Excessive oil discharge reduces the amount of refrigerant oil inside the scroll compressor, thus decreasing its reliability and increasing its operating noise.

[0003] In existing technology, manufacturers usually install an oil-gas separator in the cavity between the front cover and the exhaust port of the stationary vortex disk. The oil-gas separator is cylindrical and installed vertically in the cavity. When high-pressure gas containing refrigeration oil is discharged from the exhaust port of the stationary vortex disk, it can directly collide with the oil-gas separator and rotate around the outer circumference of the oil-gas separator. Under the action of centrifugal force, the refrigeration oil is thrown onto the cavity wall, thereby realizing oil-gas separation.

[0004] However, the magnitude of the centrifugal force during the rotation of the oil-gas mixture around the outer circumference of the oil-gas separator depends on the rotation speed of the oil-gas mixture itself. As it moves, it is continuously consumed and becomes smaller, resulting in the cooling oil being discharged with the gas before it is thrown to the cavity wall, thus reducing the oil-gas separation effect of the oil-gas separator. Summary of the Invention

[0005] The main objective of this invention is to provide an oil-gas separator and a compressor having the same, in order to solve the problem of poor oil-gas separation effect in the oil-gas separator of the scroll compressor in the prior art.

[0006] To achieve the above objectives, according to one aspect of the present invention, an oil-gas separator is provided, comprising: a housing having an oil storage chamber and an air inlet communicating with each other, so that airflow enters the oil storage chamber from the air inlet; a separation structure rotatably disposed at the air inlet, the separation structure having a separation cavity, the separation cavity being disposed through both ends of the separation structure, so that airflow in the oil storage chamber is separated by the separation structure and discharged from the separation cavity; wherein, at least a portion of the outer wall of the separation structure is provided with an outer blade structure, and at least a portion of the inner wall of the separation cavity is provided with an inner blade structure, both the outer blade structure and the inner blade structure driving the separation structure to rotate around a predetermined axis under the push of the airflow.

[0007] Furthermore, the separation structure includes a first separation part and a second separation part connected in sequence. The first separation part has a first separation cavity, and the second separation part has a second separation cavity. The first separation cavity and the second separation cavity are interconnected to form a separation cavity. The end of the first separation cavity away from the second separation cavity forms a separation outlet, and the end of the second separation cavity away from the first separation cavity forms a separation inlet. The first separation part and the second separation part are coaxially arranged. And / or, an outer blade structure is arranged on the outer wall of the second separation part, and an inner blade structure is arranged on the inner wall of the first separation cavity.

[0008] Furthermore, along the direction from the separation inlet to the separation outlet, the flow cross-sectional area of ​​the second separation chamber gradually decreases; and / or, along the direction from the separation inlet to the separation outlet, the flow cross-sectional area of ​​the first separation chamber gradually increases; and / or, along the direction from the separation outlet to the separation inlet, the cross-sectional area of ​​the second separation section gradually increases.

[0009] Furthermore, there are multiple outer blade structures, which are spaced apart along the periphery of the outer wall of the second separation section; and / or, along the direction from the separation outlet to the separation inlet, the radial width of the outer blade structures gradually increases, so that the multiple outer blade structures form a trumpet-shaped structure.

[0010] Furthermore, along the direction from the separation outlet to the separation inlet, the outer blade structure has a first connecting side edge and a first outer contour side edge arranged opposite to each other. The first connecting side edge is connected to the second separation part, and the first outer contour side edge extends out of the second separation part. The first outer contour side edge is an arc and the angle between it and the first preset direction gradually increases, so that the outer blade structure is an arc-shaped structure. The first preset direction is consistent with the tangent of the outer blade structure near the first separation part.

[0011] Furthermore, there are multiple inner blade structures, which are circumferentially spaced around the inner wall of the first separation chamber. Along the direction from the separation inlet to the separation outlet, the inner blade structure has a second connecting side edge and a second outer contour side edge that are arranged opposite to each other. The second connecting side edge is connected to the inner wall of the first separation chamber, and the second outer contour side edge extends out of the inner wall of the first separation chamber. The second outer contour side edge is an arc and the angle between it and the second preset direction gradually increases, so that the inner blade structure is an arc-shaped structure. The second preset direction is consistent with the tangent of the inner blade structure near the second separation part.

[0012] Furthermore, along the predetermined axis, the axial length of the inner blade structure is greater than the axial length of the outer blade structure.

[0013] Furthermore, the oil-gas separator also includes: a bearing structure, the outer circumferential surface of which is connected to the cavity wall of the oil storage chamber, and the inner circumferential surface of which is connected to the separation structure; a sealing structure, which is disposed on the bearing structure to seal the gap of the bearing structure; and a blocking structure, which is disposed in the oil storage chamber and located on the side of the sealing structure away from the bearing structure, and the blocking structure is used to limit and stop the sealing structure.

[0014] Furthermore, the shell also has an oil outlet, which is connected to the oil storage chamber to discharge the oil in the oil storage chamber. The oil-gas separator also includes a filter structure, which is set at the oil outlet to filter the oil passing through the oil outlet.

[0015] According to another aspect of the present invention, a compressor is provided, which includes the oil-gas separator described above.

[0016] According to the technical solution of this invention, the shell of the oil-gas separator has an interconnected oil storage chamber and an air inlet, allowing the oil-gas mixture to enter the oil storage chamber from the air inlet. A separation structure is rotatably disposed at the air inlet, and the separation structure has a separation chamber extending through both ends of the separation structure, allowing the airflow in the oil storage chamber to be separated by the separation structure and discharged from the separation chamber. At least a portion of the outer wall of the separation structure is provided with an outer blade structure, and at least a portion of the inner wall of the separation chamber is provided with an inner blade structure. Both the outer and inner blade structures drive the separation structure to rotate around a predetermined axis under the pressure of the oil-gas mixture. In this way, when the high-pressure airflow containing refrigeration oil is discharged from the exhaust port of the stationary vortex disk, the above-mentioned arrangement allows the high-pressure airflow containing refrigeration oil to contact the outer blade structure set on the outer wall of the separation structure, and drives the outer blade structure to rotate the separation structure. Under the action of centrifugal force, the high-pressure airflow containing refrigeration oil throws the refrigeration oil onto the cavity wall of the oil storage chamber, thus achieving the separation of the high-pressure airflow containing refrigeration oil. On the other hand, during the centrifugal motion of the high-pressure airflow containing refrigeration oil, the high-pressure airflow after separation by the oil-gas separator is discharged to the external environment through the separation chamber. During the process of the high-pressure airflow after separation by the oil-gas separator passing through the separation chamber, it will contact the inner blade structure in the separation chamber, and drive the inner blade structure to rotate the separation structure. This ensures that the separation structure continues to be driven by the inner blade structure after being driven by the outer blade structure, thus ensuring the continuity and reliability of the rotation of the separation structure, accelerating the separation of the high-pressure airflow containing refrigeration oil, and improving the separation efficiency of the oil-gas separator. Meanwhile, the arrangement of the outer and inner blade structures allows the separation structure to be driven by the outer and inner blade structures successively, ensuring the continuity and reliability of its rotation. Compared to traditional oil-gas separators where the rotational speed of the high-pressure airflow containing refrigerant oil is continuously consumed and reduced with movement, the separation structure can maintain its rotation under the continuous drive of the outer and inner blade structures, ensuring that the high-pressure airflow containing refrigerant oil can be continuously separated. This guarantees the separation effect of the oil-gas separator and solves the problem of poor oil-gas separation effect in existing scroll compressors. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A cross-sectional schematic diagram of an embodiment of an oil-gas separator according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 Exploded view of the structure of the oil-gas separator in the image;

[0020] Figure 3 It shows Figure 1 A three-dimensional structural diagram of the separation structure, outer blade structure, and inner blade structure of the oil-gas separator in the image.

[0021] Figure 4 It shows Figure 3 Cross-sectional schematic diagram of the separation structure, outer blade structure and inner blade structure in the image;

[0022] Figure 5 It shows Figure 3 Top view of the separated structure, outer blade structure and inner blade structure in the image;

[0023] Figure 6 It shows Figure 3 A bottom view of the separated structure, outer blade structure, and inner blade structure in the image;

[0024] Figure 7 A partial structural cross-sectional schematic diagram of an embodiment of the compressor according to the present invention is shown.

[0025] The above figures include the following reference numerals:

[0026] 10. Shell; 11. Oil reservoir; 12. Air inlet; 13. Oil outlet;

[0027] 20. Separation structure; 21. First separation section; 211. First separation chamber; 22. Second separation section; 221. Second separation chamber; 23. Separation chamber; 24. Separation outlet; 25. Separation inlet;

[0028] 30. Outer blade structure; 31. First outer contour side edge;

[0029] 40. Inner blade structure; 41. Second outer contour side edge;

[0030] 50. Bearing structure; 60. Sealing structure; 70. Barrier structure; 80. Filtering structure;

[0031] 90. Compression body; 91. Compression chamber; 92. High pressure chamber. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] To address the problem of poor oil-gas separation performance in existing scroll compressors, this application provides an oil-gas separator and a compressor having the same.

[0034] like Figures 1 to 6As shown, the oil-gas separator includes a housing 10 and a separation structure 20. The housing 10 has an oil storage chamber 11 and an air inlet 12 that are interconnected, so that airflow enters the oil storage chamber 11 from the air inlet 12. The separation structure 20 is rotatably disposed at the air inlet 12 and has a separation cavity 23 that extends through both ends of the separation structure 20, so that the airflow in the oil storage chamber 11 is separated by the separation structure 20 and discharged from the separation cavity 23. At least a portion of the outer wall of the separation structure 20 is provided with an outer blade structure 30, and at least a portion of the inner wall of the separation cavity 23 is provided with an inner blade structure 40. Both the outer blade structure 30 and the inner blade structure 40 drive the separation structure 20 to rotate around a predetermined axis under the push of the airflow.

[0035] Applying the technical solution of this embodiment, the housing 10 of the oil-gas separator has an interconnected oil storage chamber 11 and an air inlet 12, allowing airflow to enter the oil storage chamber 11 from the air inlet 12. A separation structure 20 is rotatably disposed at the air inlet 12. The separation structure 20 has a separation cavity 23, which extends through both ends of the separation structure 20, allowing the airflow in the oil storage chamber 11 to be separated by the separation structure 20 and discharged from the separation cavity 23. At least a portion of the outer wall of the separation structure 20 is provided with an outer blade structure 30, and at least a portion of the inner wall of the separation cavity 23 is provided with an inner blade structure 40. Both the outer blade structure 30 and the inner blade structure 40 drive the separation structure 20 to rotate around a predetermined axis under the pressure of the airflow. In this way, when the high-pressure airflow containing refrigeration oil is discharged from the exhaust port of the static vortex disk, the above-mentioned arrangement allows the high-pressure airflow containing refrigeration oil to contact the outer blade structure 30 set on the outer wall of the separation structure 20, and pushes the outer blade structure 30 to drive the separation structure 20 to rotate. Under the action of centrifugal force, the high-pressure airflow containing refrigeration oil throws the refrigeration oil onto the cavity wall of the oil storage chamber 11, thus achieving the separation of the high-pressure airflow containing refrigeration oil. On the other hand, during the centrifugal motion of the high-pressure airflow containing refrigeration oil, the high-pressure airflow after being separated by the oil-gas separator is discharged to the external environment through the separation chamber 23. During the process of the high-pressure airflow after being separated by the oil-gas separator passing through the separation chamber 23, it will contact the inner blade structure 40 in the separation chamber 23, and push the inner blade structure 40 to drive the separation structure 20 to rotate. This ensures that the separation structure 20 continues to be driven by the inner blade structure 40 after being driven by the outer blade structure 30, thus ensuring the continuity and reliability of the rotation of the separation structure 20, accelerating the separation of the high-pressure airflow containing refrigeration oil, and improving the separation efficiency of the oil-gas separator. Meanwhile, the arrangement of the outer blade structure 30 and the inner blade structure 40 allows the separation structure 20 to be driven successively by the outer blade structure 30 and the inner blade structure 40, ensuring the continuity and reliability of its rotation. Compared with traditional oil-gas separators where the rotational speed of the high-pressure airflow containing refrigeration oil is continuously consumed and reduced with movement, the separation structure 20 can maintain its rotation under the continuous drive of the outer blade structure 30 and the inner blade structure 40, so that the high-pressure airflow containing refrigeration oil can be continuously separated, ensuring the separation effect of the oil-gas separator, and thus solving the problem of poor oil-gas separation effect in the oil-gas separator of the existing scroll compressor.

[0036] In this embodiment, the airflow is a high-pressure airflow containing refrigeration oil.

[0037] Specifically, the airflow that drives the outer blade structure 30 to rotate the separation structure 20 is a high-pressure airflow containing a large amount of refrigeration oil that enters through the air inlet 12, and the airflow that drives the inner blade structure 40 to rotate the separation structure 20 is a high-pressure airflow containing a small amount of refrigeration oil that has been initially separated by the separation structure 20.

[0038] Specifically, the air inlet 12 is a tangential air inlet 12 to ensure that the high-pressure airflow containing refrigeration oil enters the oil storage chamber 11 tangentially.

[0039] In this embodiment, the separation structure 20 is continuously driven by the outer blade structure 30 and the inner blade structure 40 to accelerate its rotation. This causes the high-pressure airflow containing refrigerant oil to form a cyclone cavity within the oil storage chamber 11. The refrigerant oil is thrown onto the wall of the separation chamber 23 and rapidly accumulates at the bottom of the oil storage chamber 11 under the centrifugal force of the rotating high-pressure airflow containing refrigerant oil. Compared to the prior art where the oil accumulates rapidly at the bottom of the oil storage chamber 11 due to gravity, in this embodiment, the high-pressure airflow containing refrigerant oil forms a cyclone cavity within the oil storage chamber 11. The refrigerant oil, after oil-gas separation, can rapidly accumulate under the action of centrifugal force. This allows the scroll compressor to achieve oil-gas separation regardless of its installation position, improving the versatility of the oil-gas separator and enhancing the operational reliability of the scroll compressor. Simultaneously, the cyclone cavity allows the refrigerant oil to accumulate rapidly, reducing reliance on gravity, improving the separation efficiency of the refrigerant oil, and preventing the phenomenon of excessive refrigerant oil being discharged due to slow oil accumulation. This reduces the amount of oil carried in the scroll compressor's exhaust, ensuring the operational reliability of the scroll compressor.

[0040] like Figures 1 to 4As shown, the separation structure 20 includes a first separation section 21 and a second separation section 22 connected in sequence. The first separation section 21 has a first separation cavity 211, and the second separation section 22 has a second separation cavity 221. The first separation cavity 211 and the second separation cavity 221 are interconnected to form a separation cavity 23. The end of the first separation cavity 211 away from the second separation cavity 221 forms a separation outlet 24, and the end of the second separation cavity 221 away from the first separation cavity 211 forms a separation inlet 25. The first separation section 21 and the second separation section 22 are coaxially arranged; and / or, an outer blade structure 30 is disposed on the outer wall of the second separation section 22, and an inner blade structure 40 is disposed on the inner wall of the first separation cavity 211. In this way, by modularizing the separation structure 20 into a first separation section 21 and a second separation section 22, the placement positions of the inner blade structure 40 and the outer blade structure 30 are further defined, making their placement more reasonable and ensuring the rotational reliability of the inner blade structure 40 and the outer blade structure 30, thereby ensuring the rotational reliability of the separation structure 20. Simultaneously, the above arrangement gives the oil-gas separation process of the oil-gas separator a clear hierarchy. The second separation section 22 and the outer blade structure 30 are responsible for receiving and initially separating the tangentially entering high-pressure gas flow containing refrigerant oil. The first separation section 21 and the inner blade structure 40, driven by the high-pressure gas flow containing a small amount of refrigerant oil after initial separation, become the main rotational driving force for the separation structure 20, ensuring the rotational reliability of the separation structure 20, further improving the separation reliability of the oil-gas separator, optimizing the separation process, increasing the separation efficiency, and also making the functions of each component of the oil-gas separator more specialized, facilitating manufacturing, assembly, and maintenance, and improving the installation and processing efficiency of personnel.

[0041] In this embodiment, the first separating part 21 is cylindrical at one end near the second separating part 22, and the preset axis is consistent with the central axis of the cylinder.

[0042] like Figure 3 and Figure 4As shown, along the direction from the separation inlet 25 to the separation outlet 24, the flow cross-sectional area of ​​the second separation chamber 221 gradually decreases; and / or, along the direction from the separation inlet 25 to the separation outlet 24, the flow cross-sectional area of ​​the first separation chamber 211 gradually increases; and / or, along the direction from the separation outlet 24 to the separation inlet 25, the cross-sectional area of ​​the second separation section 22 gradually increases. Thus, the flow cross-sectional area of ​​the second separation chamber 221 gradually decreases, forming a gradually narrowing flow channel. According to fluid mechanics principles, this facilitates accelerating the flow velocity of the high-pressure gas containing refrigeration oil, thereby enhancing the impact force acting on the outer blade structure 30 and the centrifugal force generated by the rotation of the outer blade structure 30, and improving the primary separation efficiency. Simultaneously, the cross-sectional area of ​​the second separation section 22 gradually increases, allowing the outer blade structure 30 mounted on the second separation section 22 to follow the gradual increase in cross-sectional area. This enhances the guiding effect on the high-pressure airflow containing refrigeration oil entering the oil storage chamber 11, accelerates the speed at which the refrigeration oil leaves the separation structure 20, and accelerates the speed at which the high-pressure airflow containing refrigeration oil forms a cyclone cavity in the oil storage chamber 11, thereby improving the separation effect of the oil-gas separator. Meanwhile, the gradually increasing flow area of ​​the first separation chamber 211 creates a gradually expanding flow channel. This allows the inner blade structure 40 to follow the change in flow area of ​​the first separation chamber 211, enhancing the guiding effect on the high-pressure airflow containing a small amount of refrigeration oil after initial separation by the separation structure 20. This ensures the reliability of the high-pressure airflow containing a small amount of refrigeration oil in driving the inner blade structure 40 and also improves the rotational reliability of the separation structure 20.

[0043] Furthermore, there are multiple outer blade structures 30, which are spaced apart along the periphery of the outer wall of the second separation section 22; and / or, the radial width of the outer blade structures 30 gradually increases along the direction from the separation outlet 24 to the separation inlet 25, so that the multiple outer blade structures 30 form a trumpet-shaped structure. In this way, the spaced arrangement of the multiple outer blade structures 30 increases the contact area with the high-pressure airflow containing refrigeration oil, improves the driving force of the high-pressure airflow containing refrigeration oil on the outer blade structures 30, and thus increases the rotational speed of the separation structure 20. At the same time, the trumpet-shaped structure of the multiple outer blade structures 30 can better guide the flow direction of the high-pressure airflow containing refrigeration oil, allowing it to smoothly enter the separation structure 20 and reducing the flow loss of the high-pressure airflow containing refrigeration oil. It can also increase the contact area with the high-pressure airflow containing refrigeration oil, improve the ability of the outer blade structure 30 to accumulate refrigeration oil, increase the kinetic energy of the high-pressure airflow containing refrigeration oil, accelerate the speed at which the refrigeration oil leaves the separation structure 20, and accelerate the speed at which the high-pressure airflow containing refrigeration oil forms a cyclone cavity in the oil storage chamber 11, thereby improving the separation effect of the oil-gas separator.

[0044] In this embodiment, the radial direction of the outer blade structure 30 is consistent with the direction perpendicular to the preset axis.

[0045] like Figure 3 and Figure 6 As shown, along the direction from the separation outlet 24 to the separation inlet 25, the outer blade structure 30 has a first connecting side edge and a first outer contour side edge 31 arranged opposite to each other. The first connecting side edge is connected to the second separation part 22, and the first outer contour side edge 31 extends out of the second separation part 22. The first outer contour side edge 31 is arc-shaped, and the angle between it and the first preset direction gradually increases, so that the outer blade structure 30 is an arc-shaped structure. The first preset direction coincides with the tangent of the outer blade structure 30 near the end of the first separation part 21. In this way, the arc-shaped outer blade structure 30 can more effectively convert the kinetic energy of the high-pressure airflow containing refrigeration oil into the rotational kinetic energy of the separation structure 20, reducing the flow resistance of the high-pressure airflow containing refrigeration oil. The arc-shaped structure also meets the requirements of fluid dynamics, reducing the generation of eddies in the high-pressure airflow containing refrigeration oil, further ensuring the rotational reliability of the separation structure 20, and improving the separation efficiency of the oil-gas separator. Meanwhile, the specific arc-shaped profile of the outer blade structure 30, especially the ingenious change in the angle between the side edge 31 of the first outer profile and the tangential direction, makes the outer blade structure 30 form a spiral propulsion surface, which is conducive to guiding the flow direction of the high-pressure airflow containing refrigeration oil, ensuring the accuracy of the flow direction of the high-pressure airflow containing refrigeration oil, and also ensuring the rotational reliability of the separation structure 20.

[0046] like Figure 4 and Figure 5As shown, there are multiple inner blade structures 40, which are circumferentially spaced around the inner wall of the first separation chamber 211. Along the direction from the separation inlet 25 to the separation outlet 24, each inner blade structure 40 has a second connecting edge and a second outer contour edge 41 arranged opposite to each other. The second connecting edge is connected to the inner wall of the first separation chamber 211, and the second outer contour edge 41 extends out of the inner wall of the first separation chamber 211. The second outer contour edge 41 is curved, and the angle between it and the second preset direction gradually increases, making the inner blade structure 40 an arc-shaped structure. The second preset direction coincides with the tangent of the inner blade structure 40 near the second separation section 22. This arc-shaped design of the inner blade structure 40 allows the high-pressure airflow containing a small amount of refrigerant oil to pass more smoothly through the separation chamber 23, reducing pressure loss. The kinetic energy of the high-pressure airflow containing a small amount of refrigerant oil is used to more effectively drive the separation structure 20 to rotate, maintaining the rotation of the separation structure 20 and thus ensuring the separation effect of the separation structure 20. Meanwhile, the arc-shaped inner blade structure 40 can more effectively convert the kinetic energy of the high-pressure airflow containing a small amount of refrigeration oil into the rotational kinetic energy of the separation structure 20, reducing the flow resistance of the high-pressure airflow containing a small amount of refrigeration oil, ensuring the reliability of the high-pressure airflow containing a small amount of refrigeration oil in driving the inner blade structure 40, further ensuring the rotational reliability of the separation structure 20, and further improving the separation efficiency of the oil-gas separator. At the same time, the specific arc-shaped profile of the inner blade structure 40, especially the ingenious change in the angle between the side edge 41 of the second outer profile and the tangent direction, makes the inner blade structure 40 form a spiral propulsion surface, which is conducive to guiding the flow direction of the high-pressure airflow containing a small amount of refrigeration oil, ensuring the accuracy of the flow direction of the high-pressure airflow containing a small amount of refrigeration oil, and also ensuring the rotational reliability of the separation structure 20.

[0047] Meanwhile, the configuration of the flow cross-sectional area of ​​the first separation chamber 211 also adapts to the shape changes of the inner blade structure 40, ensuring the processing reliability and operational reliability of the inner blade structure 40.

[0048] like Figure 4As shown, along the preset axis, the axial length of the inner blade structure 40 is greater than that of the outer blade structure 30. This longer axial length of the inner blade structure 40 increases the contact area and contact time between the high-pressure airflow containing a small amount of refrigerant oil and the inner blades. This allows for more effective utilization of the kinetic energy of the high-pressure airflow containing a small amount of refrigerant oil to drive the separation structure 20 to rotate, accelerating the flow rate of the high-pressure airflow containing a small amount of refrigerant oil, increasing the rotational kinetic energy of the inner blade structure 40 on the separation structure 20, accelerating the rotational speed of the separation structure 20, and improving the separation effect of the oil-gas separator. Simultaneously, this configuration also ensures that even when the amount of refrigerant oil in the high-pressure airflow containing refrigerant oil entering from the inlet 12 is relatively small and the driving force on the outer blade structure 30 is relatively weak, the inner blade structure 40 can still provide sufficient torque to maintain the rotational speed of the separation structure 20, ensuring the adaptive stability of the oil-gas separator's separation efficiency and further guaranteeing the separation effect of the oil-gas separator.

[0049] like Figure 1 and Figure 2 As shown, the oil-gas separator also includes a bearing structure 50, a sealing structure 60, and a blocking structure 70. The outer circumferential surface of the bearing structure 50 is connected to the cavity wall of the oil storage chamber 11, and the inner circumferential surface of the bearing structure 50 is connected to the separation structure 20. The sealing structure 60 is disposed on the bearing structure 50 to seal the gap of the bearing structure 50. The blocking structure 70 is disposed in the oil storage chamber 11 and located on the side of the sealing structure 60 away from the bearing structure 50. The blocking structure 70 is used to limit and stop the sealing structure 60. In this way, the arrangement of the bearing structure 50 provides stable and low-friction support for the high-speed rotating separation structure 20, ensuring the rotational stability and smoothness of the separation structure 20. At the same time, the arrangement of the sealing structure 60 effectively prevents the high-pressure gas flow containing a large amount of refrigeration oil that has not been separated from the high-pressure gas flow from the high-pressure gas flow containing a large amount of refrigeration oil from being directly discharged through the gap of the bearing structure 50, ensuring that the high-pressure gas flow containing a large amount of refrigeration oil is separated by the separation structure 20, thus ensuring the complete separation of the high-pressure gas flow containing a large amount of refrigeration oil. Meanwhile, the arrangement of the blocking structure 70 fixes the installation position of the sealing structure 60, preventing it from falling off under external vibration, thus improving its reliability, ensuring long-term sealing reliability, and extending its service life. Furthermore, the bearing structure 50, sealing structure 60, and blocking structure 70 together constitute the stabilization and sealing system of the oil-gas separator, ensuring its long-term operational reliability and smooth operation.

[0050] like Figure 1 and Figure 2As shown, the housing 10 also has an oil outlet 13, which is connected to the oil storage chamber 11 to discharge the oil in the oil storage chamber 11. The oil-gas separator also includes a filter structure 80. The filter structure 80 is located at the oil outlet 13 to filter the oil passing through the oil outlet 13. In this way, the oil outlet 13 is used to discharge the refrigeration oil separated by the separation structure 20 and return it to the scroll compressor. At the same time, the filter structure 80 is designed to filter impurities in the refrigeration oil, preventing impurities from entering the interior of the scroll compressor and ensuring the operational safety and reliability of the scroll compressor. Furthermore, the oil outlet 13 and the filter structure 80 constitute a complete oil return system, greatly ensuring the reliability and safety of the entire scroll compressor system and extending the service life of the scroll compressor.

[0051] like Figure 7 As shown, this application also provides a compressor, which includes the oil-gas separator described above.

[0052] In this embodiment, the compressor is a scroll compressor, which includes a compression body 90 and a front cover. The front cover covers the compression body 90 and forms a housing 10. The compression body 90 has a compression chamber 91 and a high-pressure chamber 92. The compression chamber 91 is formed by the meshing of a stationary scroll and a moving scroll. The stationary scroll has an exhaust port, which communicates with the high-pressure chamber 92 to discharge the compressed high-pressure airflow containing refrigeration oil from the compression chamber 91 into the high-pressure chamber 92. The high-pressure chamber 92 is used to reduce the exhaust clearance and reduce exhaust noise. The high-pressure chamber 92 is communicated with the air inlet 12 of the housing 10 to allow the high-pressure airflow containing refrigeration oil to enter the oil storage chamber 11 through the air inlet 12.

[0053] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0054] The oil-gas separator housing has an interconnected oil storage chamber and an air inlet, allowing the oil-gas mixture to enter the oil storage chamber through the air inlet. A separation structure is rotatably mounted at the air inlet and has a separation chamber extending through both ends of the separation structure, allowing the gas flow in the oil storage chamber to be separated and discharged from the separation chamber. At least a portion of the outer wall of the separation structure has an outer blade structure, and at least a portion of the inner wall of the separation chamber has an inner blade structure. Both the outer and inner blade structures drive the separation structure to rotate around a predetermined axis under the influence of the oil-gas mixture. In this way, when the high-pressure airflow containing refrigeration oil is discharged from the exhaust port of the stationary vortex disk, the above-mentioned arrangement allows the high-pressure airflow containing refrigeration oil to contact the outer blade structure set on the outer wall of the separation structure, and drives the outer blade structure to rotate the separation structure. Under the action of centrifugal force, the high-pressure airflow containing refrigeration oil throws the refrigeration oil onto the cavity wall of the oil storage chamber, thus achieving the separation of the high-pressure airflow containing refrigeration oil. On the other hand, during the centrifugal motion of the high-pressure airflow containing refrigeration oil, the high-pressure airflow after separation by the oil-gas separator is discharged to the external environment through the separation chamber. During the process of the high-pressure airflow after separation by the oil-gas separator passing through the separation chamber, it will contact the inner blade structure in the separation chamber, and drive the inner blade structure to rotate the separation structure. This ensures that the separation structure continues to be driven by the inner blade structure after being driven by the outer blade structure, thus ensuring the continuity and reliability of the rotation of the separation structure, accelerating the separation of the high-pressure airflow containing refrigeration oil, and improving the separation efficiency of the oil-gas separator. Meanwhile, the arrangement of the outer and inner blade structures allows the separation structure to be driven by the outer and inner blade structures successively, ensuring the continuity and reliability of its rotation. Compared to traditional oil-gas separators where the rotational speed of the high-pressure airflow containing refrigerant oil is continuously consumed and reduced with movement, the separation structure can maintain its rotation under the continuous drive of the outer and inner blade structures, ensuring that the high-pressure airflow containing refrigerant oil can be continuously separated. This guarantees the separation effect of the oil-gas separator and solves the problem of poor oil-gas separation effect in existing scroll compressors.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An oil-gas separator, characterized in that, include: The housing (10) has an oil storage chamber (11) and an air inlet (12) that are interconnected, so that airflow enters the oil storage chamber (11) from the air inlet (12); A separation structure (20) is rotatably disposed at the air inlet (12). The separation structure (20) has a separation chamber (23) which is disposed through both ends of the separation structure (20) so that the airflow in the oil storage chamber (11) is separated by the separation structure (20) and discharged from the separation chamber (23). The separation structure (20) includes a first separation section (21) and a second separation section (22) connected in sequence. The first separation section (21) has a first separation cavity (211), and the second separation section (22) has a second separation cavity (221). The first separation cavity (211) and the second separation cavity (221) are interconnected to form the separation cavity (23). The end of the first separation cavity (211) away from the second separation cavity (221) forms a separation outlet (24), and the end of the second separation cavity (221) away from the first separation cavity (211) forms a separation inlet (25). At least a portion of the outer wall of the separation structure (20) is provided with an outer blade structure (30), and at least a portion of the inner wall of the separation cavity (23) is provided with an inner blade structure (40). Both the outer blade structure (30) and the inner blade structure (40) drive the separation structure (20) to rotate around a preset axis under the push of the airflow. There are multiple inner blade structures (40). The structure (40) is circumferentially spaced around the inner wall of the first separation cavity (211) of the separation structure (20); along the direction from the separation inlet (25) of the separation structure (20) to the separation outlet (24) of the separation structure (20), the inner blade structure (40) has a second connecting side edge and a second outer contour side edge (41) arranged opposite to each other. The second connecting side edge is connected to the inner wall of the first separation cavity (211), and the second outer contour side edge (41) extends out of the inner wall of the first separation cavity (211). The second outer contour side edge (41) is an arc and the angle between it and the second preset direction gradually increases so that the inner blade structure (40) is an arc-shaped structure; wherein, the second preset direction is consistent with the tangent of the inner blade structure (40) near the second separation part (22) of the separation structure (20); the outer blade structure (30) is disposed on the outer wall of the second separation part (22), and the inner blade structure (40) is disposed on the inner wall of the first separation cavity (211).

2. The oil-gas separator according to claim 1, characterized in that, The first separation part (21) and the second separation part (22) are coaxially arranged.

3. The oil-gas separator according to claim 2, characterized in that, Along the direction from the separation inlet (25) to the separation outlet (24), the flow cross-sectional area of ​​the second separation chamber (221) gradually decreases; and / or, Along the direction from the separation inlet (25) to the separation outlet (24), the cross-sectional area of ​​the first separation chamber (211) gradually increases; and / or, Along the direction from the separation outlet (24) to the separation inlet (25), the cross-sectional area of ​​the second separation section (22) gradually increases.

4. The oil-gas separator according to claim 2, characterized in that, The outer blade structure (30) is multiple, and the multiple outer blade structures (30) are spaced apart along the outer periphery of the second separation portion (22); and / or, Along the direction from the separation outlet (24) to the separation inlet (25), the radial width of the outer blade structure (30) gradually increases so that the plurality of outer blade structures (30) form a trumpet-shaped structure.

5. The oil-gas separator according to claim 2, characterized in that, Along the direction from the separation outlet (24) to the separation inlet (25), the outer blade structure (30) has a first connecting side edge and a first outer contour side edge (31) disposed opposite to each other. The first connecting side edge is connected to the second separation part (22). The first outer contour side edge (31) extends out of the second separation part (22). The first outer contour side edge (31) is an arc and the angle between it and the first preset direction gradually increases, so that the outer blade structure (30) is an arc-shaped structure. The first preset direction is consistent with the tangent of the outer blade structure (30) near the end of the first separation part (21).

6. The oil-gas separator according to claim 1, characterized in that, Along the direction of the preset axis, the axial length of the inner blade structure (40) is greater than the axial length of the outer blade structure (30).

7. The oil-gas separator according to claim 1, characterized in that, The oil-gas separator also includes: The bearing structure (50) has an outer peripheral surface connected to the cavity wall of the oil storage cavity (11) and an inner peripheral surface connected to the separation structure (20). A sealing structure (60) is provided on the bearing structure (50) to seal the gaps of the bearing structure (50); A blocking structure (70) is disposed in the oil storage cavity (11) and located on the side of the sealing structure (60) away from the bearing structure (50). The blocking structure (70) is used to limit and stop the sealing structure (60).

8. The oil-gas separator according to claim 1, characterized in that, The housing (10) also has an oil outlet (13), which is connected to the oil storage chamber (11) to discharge the oil in the oil storage chamber (11). The oil-gas separator further includes: A filter structure (80) is provided at the oil outlet (13) for filtering the oil passing through the oil outlet (13).

9. A compressor, characterized in that, The compressor includes the oil-gas separator according to any one of claims 1 to 8.

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