Pump body structure and rolling rotor compressor

Abstract

The application provides a pump body structure and a rolling rotor type compressor, the pump body structure comprising a crankshaft, a flange and a cylinder, the flange and the cylinder being sleeved on the crankshaft; the crankshaft is provided with an oil supply hole, the cylinder is provided with a sliding vane groove, and the flange is provided with an oil supply channel on an inner end face facing the cylinder, the oil supply channel being configured to enable lubricating oil in the oil supply hole to flow to the sliding vane groove. The application realizes lubricating oil supply for the sliding vane by providing the oil supply channel on the flange to separately supply oil to the sliding vane groove, ensures that the sliding vane is always in a good lubricating state, and is beneficial to improving the operation stability and reliability of the compressor.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, specifically to a pump body structure and a rolling rotor compressor. Background Technology

[0002] In a rolling rotor compressor, the cylinder, rotor, and vanes constitute the working chamber of the compressor. The upper and lower flanges are located at the upper and lower ends of the cylinder, respectively, sealing the working chamber. The crankshaft passes through the compressor's pump body and motor. Under the action of the motor's power rotation, the crankshaft drives the rotor to rotate eccentrically. Under the action of the spring, the vanes reciprocate and always maintain contact with the rotor, thus forming independent high-pressure chambers and low-pressure chambers.

[0003] In practical use, the working chamber of the pump body constantly changes position as the rotor rotates. The vanes are not only subjected to the pressure difference between the high-pressure chamber and the low-pressure chamber, but also to friction with the rotor, making them one of the most vulnerable components of the compressor pump body. Wear between the vanes and the vane groove, and between the vanes and the flange end face, constitutes a significant portion of the friction loss in rotary compressors. Unlike bearing systems, the friction pairs between the vanes and the vane groove, and between the vanes and the flange end face, lack a stable oil supply method, making them highly susceptible to frictional wear and clearance leakage between the mating end faces. This becomes a crucial factor affecting the performance and reliability of the compressor. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a pump body structure and a rolling rotor compressor, which facilitates vane lubrication while reducing leakage from the high-pressure chamber of the pump body through the vane position gap.

[0005] To achieve the above objectives, according to one aspect of the present invention, a pump body structure is provided, comprising a crankshaft, a flange, and a cylinder, wherein the flange and the cylinder are both sleeved on the crankshaft;

[0006] The crankshaft is provided with an oil supply hole, and the cylinder is provided with a sliding vane groove;

[0007] The flange has an oil supply channel on its inner end face facing the cylinder. The oil supply channel is configured to allow the lubricating oil in the oil supply hole to flow to the slide groove.

[0008] The pump body structure of this application has an oil supply channel provided on the inner end face of the flange, so that the oil supply hole of the crankshaft is connected to the sliding vane groove of the cylinder. After the compressor is running normally, the lubricating oil in the bottom oil sump enters the oil supply channel inside the crankshaft under the action of crankshaft rotation, enters the pump body through the oil supply hole, and then flows into the space between the sliding vane and the flange, and between the sliding vane and the sliding vane groove through the oil supply channel. In this way, the lubricating oil occupies the gap between the sliding vane and the flange, and between the sliding vane and the sliding vane groove, reducing the refrigerant leakage in the high-pressure chamber, thereby reducing the loss of cooling capacity. At the same time, with the sufficient lubrication of the lubricating oil, the friction between the sliding vane and the contact parts is reduced, which is beneficial to improving the reliability of the compressor.

[0009] In some embodiments, the crankshaft has a thrust surface facing the inner end face;

[0010] A cavity is formed between the inner end face and the thrust face, and the oil supply hole communicates with the cavity.

[0011] The inlet of the oil supply channel is connected to the cavity, and the outlet of the oil supply channel is disposed opposite to the sliding vane groove.

[0012] The pump body structure of this embodiment has a cavity formed by the crankshaft, rotor and flange, which can store the lubricating oil flowing in through the oil supply hole and distribute it to the gaps between the rotor and flange, and between the crankshaft and flange, to achieve gap sealing of the pump body working chamber. The oil supply channel is connected to the cavity to introduce the lubricating oil in the pump body into the space between the vane and flange, and between the vane and vane groove. The overall structure is simple and easy to implement.

[0013] In some embodiments, the inner end face is provided with a flexible groove;

[0014] The flexible groove is connected to the cavity, and the inlet of the oil supply channel is connected to the flexible groove.

[0015] In this embodiment, the pump body structure has a flexible groove on the flange that is an annular groove surrounding the central hole of the flange. It can communicate with the cavity of the crankshaft thrust surface. The oil supply channel is connected to the flexible groove, which can further simplify the structure of the oil supply channel and thus improve the ability to supply oil to the vane groove.

[0016] In some embodiments, an installation groove is provided on the inner end face, an oil trough structure is provided in the installation groove, and the oil supply channel is provided on the oil trough structure.

[0017] In this embodiment, it is relatively difficult to directly machine the oil supply channel on the flange. Therefore, a separate oil groove structure is set up. An installation groove is machined on the flange, and the oil supply channel is machined on the oil groove structure. The oil groove structure is then embedded into the installation groove, thereby reducing the machining difficulty of the oil supply channel.

[0018] In some embodiments, the oil tank structure is detachably disposed in the mounting groove.

[0019] The pump body structure of this embodiment is designed with a detachable oil tank structure, which facilitates the replacement and maintenance of the oil tank structure and ensures the functional stability of the oil supply channel on it.

[0020] In some embodiments, the oil supply channel has multiple outlets and is spaced apart along the extension direction of the vane groove.

[0021] The pump body structure of this embodiment has multiple outlets spaced apart above the vane groove. This allows the lubricating oil to flow evenly between the vane and the flange, and between the vane and the vane groove, thereby evenly occupying the gap between the vane and the flange, and between the vane and the vane groove.

[0022] In some embodiments, the cross-sectional shape of the oil supply channel is circular, polygonal, or I-shaped.

[0023] The pump body structure of this embodiment can be flexibly designed with the cross-sectional shape of the oil supply channel according to the structure of the vane groove, so as to better allow the lubricating oil to flow between the vane and the flange, and between the vane and the vane groove.

[0024] In some embodiments, the flange is an upper flange or a lower flange.

[0025] In this embodiment, the oil supply channel can be located on either the upper flange or the lower flange, depending on the type of pump body structure.

[0026] In some embodiments, there are multiple cylinders, and the flange is a partition disposed between two cylinders.

[0027] The pump body structure of this embodiment can also be applied to multi-cylinder compressors. In multi-cylinder compressors, the oil supply channel can be set on the upper flange, the lower flange, or the partition plate. That is, the oil supply channel can be freely combined and set on the upper and lower flanges or the partition plate.

[0028] According to another aspect of the present invention, a rolling rotor compressor is provided, comprising the pump body structure described above.

[0029] The rolling rotor compressor of this application, due to the aforementioned pump body structure that allows for individual oil supply to the vane slots, ensures that the gaps on both sides and above and below the vanes are filled with lubricating oil. This further seals the gaps, reducing refrigerant leakage caused by the high-pressure chamber passing through these gaps, minimizing cooling capacity loss, and improving compressor performance. Simultaneously, the ample lubricating oil further ensures the lubrication effect of the vane's reciprocating motion, enhancing the compressor's reliability.

[0030] As can be seen from the above technical solution, the pump body structure and rolling rotor compressor of this application, by setting a separate oil supply channel on the flange to supply oil to the sliding vane groove, realize the lubrication of the sliding vane, ensure that the sliding vane is always in a good lubrication state, which is conducive to improving the operating stability and reliability of the compressor. Attached Figure Description

[0031] 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 improper limitation of the invention.

[0032] Figure 1 This is a cross-sectional view of the pump body structure according to an embodiment of the present invention;

[0033] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0034] Figure 3 This is a schematic diagram of the upper flange according to an embodiment of the present invention;

[0035] Figure 4 This is an assembly diagram of the upper flange and oil tank structure according to an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of a cylinder according to an embodiment of the present invention;

[0037] Figure 6 This is an assembly diagram of the crankshaft, rotor, vane, and cylinder according to an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the oil tank structure according to an embodiment of the present invention. Figure 1 ;

[0039] Figure 8 This is a schematic diagram of the oil tank structure according to an embodiment of the present invention. Figure 2 ;

[0040] Figure 9 This is a schematic diagram of the oil tank structure according to an embodiment of the present invention. Figure 3 ;

[0041] in:

[0042] 1-Crankshaft; 2-Upper flange; 3-Upper muffler; 4-Screw; 5-Rotor; 6-Cylinder; 7-Lower flange; 8-Lower muffler; 9-Sliding vane; 10-Spring; 11-Oil groove structure; 12-Oil supply hole; 13-Thrust surface; 14-Cavity;

[0043] 21-Flexible groove; 22-Mounting groove; 23-Inner end face;

[0044] 61-Sliding groove;

[0045] 111 - Oil supply channel. Detailed Implementation

[0046] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

[0047] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0048] Currently, in rolling rotor compressors, the friction pairs between the vanes and the vane groove, and between the vanes and the flange end face, lack a stable oil supply method, which easily leads to frictional wear and gap leakage between the mating end faces, becoming an important factor affecting the performance and reliability of the compressor.

[0049] Therefore, this application proposes a pump body structure and a rolling rotor compressor, which is beneficial for vane lubrication while reducing leakage in the high-pressure chamber of the pump body through the vane position gap.

[0050] Example 1

[0051] See Figures 1 to 6 This embodiment provides a pump body structure, including a crankshaft 1, a flange, and a cylinder 6, both of which are mounted on the crankshaft 1. The crankshaft 1 has an oil supply hole 12, and the cylinder 6 has a vane groove 61. An oil supply channel 111 is provided on the inner end face 23 of the flange facing the cylinder, and the oil supply channel 111 is configured to allow lubricating oil in the oil supply hole 12 to flow to the vane groove 61.

[0052] More specifically, the crankshaft 1 has an oil supply channel extending axially, and the oil supply hole 12 communicates with the oil supply channel to supply oil to the pump body. The vane groove 61 extends radially along the cylinder 6, and a vane 9 is slidably disposed in the vane groove 61. The rotor 5 is disposed in the cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working chamber. The vane 9 abuts against the rotor 5 under the action of the spring 10 to divide the working chamber into a high-pressure chamber and a low-pressure chamber.

[0053] Applying the technical solution of this embodiment, an oil supply channel 11 is provided on the inner end face 23 of the flange, so that the oil supply hole 12 of the crankshaft 1 is connected to the vane groove 61 of the cylinder 6. After the compressor is running normally, the lubricating oil in the bottom oil sump enters the oil supply channel inside the crankshaft 1 under the rotation of the crankshaft 1, enters the pump body through the oil supply hole 12, and then flows into the space between the vane 9 and the flange, and between the vane 9 and the vane groove 61 through the oil supply channel 111. In this way, the lubricating oil occupies the gap between the vane 9 and the flange, and between the vane 9 and the vane groove 61, reducing refrigerant leakage in the high-pressure chamber, thereby reducing the loss of cooling capacity. At the same time, with sufficient lubrication of the lubricating oil, the vane 9 reduces friction with the contacting parts, which is beneficial to improving the reliability of the compressor.

[0054] In some disclosures, in order to allow the lubricating oil flowing out of the oil supply hole 12 to enter the oil supply channel 111 and then flow to the vane groove 61, a corresponding guide structure can be provided on the flange or crankshaft 1. For example, an annular groove can be opened at the position of the flange corresponding to the oil supply hole 12, and the oil supply channel 111 is connected to the annular groove. In this way, the lubricating oil sprayed out from the oil supply hole 12 enters the oil supply channel 111 through the annular groove.

[0055] In some disclosures, the annular groove can also be formed on the crankshaft 1, with the inlet of the oil supply channel 111 aligned with the annular groove, and the oil ejected from the oil supply hole 12 entering the oil supply channel 111 through the annular groove.

[0056] In some disclosures, the oil supply channel 111 has multiple outlets, which are spaced apart along the extension direction of the vane groove 61. That is, the multiple outlets are spaced apart at positions opposite to the inner end face 23 and the vane groove 61. The lubricating oil from the oil supply channel 111 flows into the gap between the vane 9 and the flange, and between the vane 9 and the vane groove 61 through the multiple outlets, which can make the lubricating oil occupy the gap between the vane 9 and the flange, and between the vane 9 and the vane groove 61 more evenly.

[0057] Example 2

[0058] See Figures 1 to 6 This embodiment provides a pump body structure, including a crankshaft 1, a flange and a cylinder 6, both of which are mounted on the crankshaft 1.

[0059] The crankshaft 1 has an eccentric portion on which a rotor 5 is mounted. The rotor 5 is disposed within a cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working cavity. A vane groove 61 is provided on the cylinder 6, extending radially. A vane 9 is slidably disposed within the vane groove 61. The rotor 5 is disposed within the cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working cavity. The vane 9 abuts against the rotor 5 under the action of a spring 10, thereby dividing the working cavity into a high-pressure chamber and a low-pressure chamber.

[0060] The end face of the flange facing the cylinder 6 is the inner end face 23, and the end face of the eccentric part of the crankshaft 1 facing the inner end face 23 is the thrust surface 13. The thrust surface 13 can be designed as a stepped surface, so that the inner end face 23, the thrust surface 13, and the inner surface of the rotor 5 form a cavity 14. The crankshaft 1 has an oil supply channel extending along its axial direction, and an oil supply hole 12 is provided on the crankshaft 1. The oil supply hole 12 is located in a position communicating with the cavity 14 and communicating with the internal oil supply channel. In this way, the lubricating oil flowing out from the oil supply hole 12 can enter the cavity 14, thereby occupying the gap between the rotor 5 and the flange, and between the eccentric part and the flange, to achieve gap sealing of the pump body working chamber.

[0061] An oil supply channel 111 is provided on the inner end face 23 of the flange. The inlet of the oil supply channel 111 is located at the position opposite to the cavity 14 on the inner end face 23, so as to realize the connection between the oil supply channel 111 and the cavity 14. The outlet of the oil supply channel 111 is located at the position opposite to the sliding vane groove 61 on the inner end face 23, so as to realize the connection between the oil supply channel 111 and the sliding vane groove 61.

[0062] In this way, after the compressor is running normally, the lubricating oil in the bottom oil sump enters the oil supply channel inside the crankshaft 1 under the rotation of the crankshaft 1, enters the cavity 14 through the oil supply hole 12, and then flows into the gap between the vane 9 and the flange, and between the vane 9 and the vane groove 61 through the oil supply channel 111. At this time, the gaps on both sides and above and below the vane 9 are filled with lubricating oil, and the gaps are further sealed by the lubricating oil, reducing refrigerant leakage caused by the high-pressure chamber passing through this gap, thereby reducing the loss of cooling capacity and improving the performance of the compressor. At the same time, sufficient lubricating oil further ensures the lubrication effect of the reciprocating motion of the vane 9, improving the reliability of the compressor.

[0063] In this embodiment, the pump body structure, the cavity 14 formed by the crankshaft 1, rotor 5 and flange can store the lubricating oil flowing in through the oil supply hole 12. By setting the oil supply channel 111 to be connected to the cavity 14, the lubricating oil in the pump body is introduced into the space between the vane 9 and the flange, and between the vane 9 and the vane groove 61. The overall structure is simple and easy to implement.

[0064] Example 3

[0065] See Figures 1 to 6 This embodiment provides a pump body structure, including a crankshaft 1, a flange and a cylinder 6, both of which are mounted on the crankshaft 1.

[0066] The crankshaft 1 has an eccentric portion on which a rotor 5 is mounted. The rotor 5 is disposed within a cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working cavity. A vane groove 61 is provided on the cylinder 6, extending radially. A vane 9 is slidably disposed within the vane groove 61. The rotor 5 is disposed within the cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working cavity. The vane 9 abuts against the rotor 5 under the action of a spring 10, thereby dividing the working cavity into a high-pressure chamber and a low-pressure chamber.

[0067] The end face of the flange facing the cylinder 6 is the inner end face 23, and the end face of the eccentric part of the crankshaft 1 facing the inner end face 23 is the thrust surface 13. The thrust surface 13 can be designed as a stepped surface, so that the inner end face 23, the thrust surface 13, and the inner surface of the rotor 5 form a cavity 14. The crankshaft 1 has an oil supply channel extending along its axial direction, and an oil supply hole 12 is provided on the crankshaft 1. The oil supply hole 12 is located in a position communicating with the cavity 14 and communicating with the internal oil supply channel. In this way, the lubricating oil flowing out from the oil supply hole 12 can enter the cavity 14, thereby occupying the gap between the rotor 5 and the flange, and between the eccentric part and the flange, to achieve gap sealing of the pump body working chamber.

[0068] A flexible groove 21 is provided on the inner end face 23 of the flange. The flexible groove 21 is an annular groove constructed around the central hole of the flange, which can communicate with the cavity 14 of the thrust surface 13 of the crankshaft 1.

[0069] The inner end face 23 is also provided with an oil supply channel 111. The inlet of the oil supply channel 111 is opened on the outer wall of the flexible groove 21, so as to realize the connection between the oil supply channel 111 and the flexible groove 21. The flexible groove 21 is connected to the cavity 14, so as to realize the connection between the oil supply channel 111 and the cavity 14. The outlet of the oil supply channel 111 is still opened at the position opposite to the sliding vane groove 61 on the inner end face 23 of the flange, so as to realize the connection between the oil supply channel 111 and the sliding vane groove 61.

[0070] In this way, after the compressor is running normally, the lubricating oil in the bottom oil sump enters the oil supply channel inside the crankshaft 1 under the rotation of the crankshaft 1, enters the cavity 14 through the oil supply hole 12, then enters the flexible groove 22, and then flows into the gap between the vane 9 and the flange, and between the vane 9 and the vane groove 61 through the oil supply channel 111. At this time, the gaps on both sides and above and below the vane 9 are filled with lubricating oil, and the gaps are further sealed by the lubricating oil, reducing refrigerant leakage caused by the high-pressure chamber passing through this gap, thereby reducing the loss of cooling capacity and improving the performance of the compressor. At the same time, sufficient lubricating oil further ensures the lubrication effect of the reciprocating motion of the vane 9, improving the reliability of the compressor.

[0071] In this embodiment, the pump body structure has a flexible groove 22 that communicates with the cavity 12 on the inner end face 23 of the flange. The oil supply channel 111 only needs to communicate with the flexible groove 22 to achieve communication with the cavity 14, so that the lubricating oil in the pump body can be introduced between the vane 9 and the flange, and between the vane 9 and the vane groove 61. In this way, the oil supply channel 111 can be designed as an L-shape. Compared with the U-shaped flow channel in Embodiment 2, the structure of the oil supply channel 111 can be further simplified, thereby improving the ability to supply oil to the vane groove 61.

[0072] Example 4

[0073] See Figures 1 to 9This embodiment provides a pump body structure, including a crankshaft 1, a flange and a cylinder 6, both of which are mounted on the crankshaft 1.

[0074] The crankshaft 1 has an eccentric portion on which a rotor 5 is mounted. The rotor 5 is disposed within a cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working cavity. A vane groove 61 is provided on the cylinder 6, extending radially. A vane 9 is slidably disposed within the vane groove 61. The rotor 5 is disposed within the cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working cavity. The vane 9 abuts against the rotor 5 under the action of a spring 10, thereby dividing the working cavity into a high-pressure chamber and a low-pressure chamber.

[0075] The end face of the flange facing the cylinder 6 is the inner end face 23, and the end face of the eccentric part of the crankshaft 1 facing the inner end face 23 is the thrust surface 13. The thrust surface 13 can be designed as a stepped surface, so that the inner end face 23, the thrust surface 13, and the inner surface of the rotor 5 form a cavity 14. The crankshaft 1 has an oil supply channel extending along its axial direction, and an oil supply hole 12 is provided on the crankshaft 1. The oil supply hole 12 is located in a position communicating with the cavity 14 and communicating with the internal oil supply channel. In this way, the lubricating oil flowing out from the oil supply hole 12 can enter the cavity 14, thereby occupying the gap between the rotor 5 and the flange, and between the eccentric part and the flange, to achieve gap sealing of the pump body working chamber.

[0076] An installation groove 22 is provided on the inner end face 23 of the flange. An oil groove structure 11 is provided in the installation groove 22. An oil supply channel 111 is provided on the oil groove structure 11. The inlet a of the oil supply channel 111 is opposite to the cavity 14, so as to realize the connection between the oil supply channel 111 and the cavity 14. The outlet b of the oil supply channel 111 is opposite to the sliding vane groove 61, so as to realize the connection between the oil supply channel 111 and the sliding vane groove 61.

[0077] Optionally, the oil tank structure 11 is a block that is adapted to the shape of the mounting groove 22. It can be tightly joined to the mounting groove 22 by various methods such as gluing, welding, riveting, and interference fit to ensure that the oil tank structure 11 does not fall off.

[0078] In this way, after the compressor is running normally, the lubricating oil in the bottom oil sump enters the oil supply channel inside the crankshaft 1 under the rotation of the crankshaft 1, enters the cavity 14 through the oil supply hole 12, and then flows into the gap between the vane 9 and the flange, and between the vane 9 and the vane groove 61 through the oil supply channel 111. At this time, the gaps on both sides and above and below the vane 9 are filled with lubricating oil, and the gaps are further sealed by the lubricating oil, reducing refrigerant leakage caused by the high-pressure chamber passing through this gap, thereby reducing the loss of cooling capacity and improving the performance of the compressor. At the same time, sufficient lubricating oil further ensures the lubrication effect of the reciprocating motion of the vane 9, improving the reliability of the compressor.

[0079] In this embodiment, the pump body structure places the oil supply channel 111 on a separate oil trough structure 11, which is then nested and fitted into the mounting groove 22 of the flange. Thus, since the oil trough structure 11 is a separate block structure, machining the oil supply channel 111 on it is relatively simple, thereby solving the problem of the relative difficulty in directly machining the oil supply channel 111 on the flange.

[0080] In some disclosures, the oil tank structure 11 is detachably installed in the mounting groove. For example, it can be nested in the mounting groove 2 using a connecting structure such as screws, which facilitates the replacement and maintenance of the oil tank structure 11 and ensures the functional stability of the oil supply channel 111 thereon.

[0081] See Figures 7 to 9 In some disclosures, the cross-sectional shape of the oil supply channel 111 is not limited. For example, it can be a circle, polygon, or I-shaped shape as shown in the figure. Of course, it can also be an ellipse. Specifically, the cross-sectional shape of the oil supply channel 111 can be flexibly designed according to the shape and structure of the slide groove 61 so as to better allow the lubricating oil to flow between the slide 9 and the flange, and between the slide 9 and the slide groove 61.

[0082] Example 5

[0083] See Figures 1 to 9 This embodiment provides a pump body structure, including a crankshaft 1, a flange and a cylinder 6, both of which are mounted on the crankshaft 1.

[0084] The crankshaft 1 has an eccentric portion on which a rotor 5 is mounted. The rotor 5 is disposed within a cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working cavity. A vane groove 61 is provided on the cylinder 6, extending radially. A vane 9 is slidably disposed within the vane groove 61. The rotor 5 is disposed within the cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working cavity. The vane 9 abuts against the rotor 5 under the action of a spring 10, thereby dividing the working cavity into a high-pressure chamber and a low-pressure chamber.

[0085] The end face of the flange facing the cylinder 6 is the inner end face 23, and the end face of the eccentric part of the crankshaft 1 facing the inner end face 23 is the thrust surface 13. The thrust surface 13 can be designed as a stepped surface, so that the inner end face 23, the thrust surface 13, and the inner surface of the rotor 5 form a cavity 14. The crankshaft 1 has an oil supply channel extending along its axial direction, and an oil supply hole 12 is provided on the crankshaft 1. The oil supply hole 12 is located in a position communicating with the cavity 14 and communicating with the internal oil supply channel. In this way, the lubricating oil flowing out from the oil supply hole 12 can enter the cavity 14, thereby occupying the gap between the rotor 5 and the flange, and between the eccentric part and the flange, to achieve gap sealing of the pump body working chamber.

[0086] A flexible groove 21 is provided on the inner end face 23 of the flange. The flexible groove 21 is an annular groove constructed around the central hole of the flange, which can communicate with the cavity 14 of the thrust surface 13 of the crankshaft 1.

[0087] An installation groove 22 is provided on the inner end face 23 of the flange, which communicates with the flexible groove 21. An oil groove structure 11 is provided in the installation groove 22. One side of the oil groove structure 11 is curved, and the shape and size of the curved surface must be exactly the same as those of the flexible groove 21. The shapes of the other sides of the oil groove structure 11 must be exactly the same as those of the installation groove 22 to ensure that the oil groove structure 11 and the installation groove 22 can fit and seal completely after assembly. The oil groove structure 11 and the installation groove 22 can be tightly joined by various methods such as adhesive bonding, welding, riveting, and interference fit to ensure a sealed connection and prevent the oil groove structure 11 from falling off.

[0088] The oil tank structure 11 is provided with an oil supply channel 111. The shape of the oil supply channel 111 is not limited. However, the inlet a of the oil supply channel 111 needs to be connected to the flexible groove 21. The oil supply channel 111 is connected to the cavity 14 through the flexible groove 21. The outlet b of the oil supply channel 111 needs to be opposite to the sliding vane groove 61 to achieve the connection between the oil supply channel 111 and the sliding vane groove 61.

[0089] In this way, after the compressor is running normally, the lubricating oil in the bottom oil sump enters the oil supply channel inside the crankshaft 1 under the rotation of the crankshaft 1, enters the cavity 14 through the oil supply hole 12, then enters the flexible groove 22, and then flows into the gap between the vane 9 and the flange, and between the vane 9 and the vane groove 61 through the oil supply channel 111. At this time, the gaps on both sides and above and below the vane 9 are filled with lubricating oil, and the gaps are further sealed by the lubricating oil, reducing refrigerant leakage caused by the high-pressure chamber passing through this gap, thereby reducing the loss of cooling capacity and improving the performance of the compressor. At the same time, sufficient lubricating oil further ensures the lubrication effect of the reciprocating motion of the vane 9, improving the reliability of the compressor.

[0090] Example 6

[0091] See Figures 1 to 9 This embodiment provides a pump body structure, including a crankshaft 1, an upper flange 2 and a cylinder 6, with the upper flange 2 and the cylinder 6 both mounted on the crankshaft 1.

[0092] The crankshaft 1 has an eccentric portion on which a rotor 5 is mounted. The rotor 5 is disposed within a cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working cavity. A vane groove 61 is provided on the cylinder 6, extending radially. A vane 9 is slidably disposed within the vane groove 61. The rotor 5 is disposed within the cylinder 6 and fits against the inner surface of the cylinder 6 to form a crescent-shaped working cavity. The vane 9 abuts against the rotor 5 under the action of a spring 10, thereby dividing the working cavity into a high-pressure chamber and a low-pressure chamber.

[0093] The lower end face of the upper flange 2 facing the cylinder 6 is the inner end face 23. The end face of the eccentric part of the crankshaft 1 facing the inner end face 23 is the thrust surface 13. The thrust surface 13 can be designed as a stepped surface, so that the inner end face 23, the thrust surface 13, and the inner surface of the rotor 5 form a cavity 14. The crankshaft 1 has an oil supply channel extending along its axial direction. The crankshaft 1 is provided with an oil supply hole 12, which is located in a position communicating with the cavity 14 and communicating with the internal oil supply channel. In this way, the lubricating oil flowing out from the oil supply hole 12 can enter the cavity 14, thereby occupying the gap between the rotor 5 and the upper flange 2, and between the eccentric part and the upper flange 2, to achieve gap sealing of the pump body working chamber.

[0094] A flexible groove 21 is provided on the inner end face 23 of the upper flange 2. The flexible groove 21 is an annular groove constructed around the central hole of the upper flange 2, which can communicate with the cavity 14 of the thrust surface 13 of the crankshaft 1.

[0095] An installation groove 22 is provided on the inner end face 23 of the upper flange 2. The installation groove 22 is connected to the flexible groove 21. An oil groove structure 11 is provided in the installation groove 22. One side of the oil groove structure 11 is curved, and the shape of the curved surface must be exactly the same as the shape and size of the flexible groove 21. The shape of the other sides of the oil groove structure 11 must be exactly the same as the installation groove 22 to ensure that the oil groove structure 11 and the installation groove 22 can fit and seal completely after assembly. The oil groove structure 11 and the installation groove 22 can be tightly joined by various methods such as adhesive bonding, welding, riveting, and interference fit to ensure a sealed connection and prevent the oil groove structure 11 from falling off.

[0096] The oil tank structure 11 is provided with an oil supply channel 111. The shape of the oil supply channel 111 is not limited. However, the inlet a of the oil supply channel 111 needs to be connected to the flexible groove 21. The oil supply channel 111 is connected to the cavity 14 through the flexible groove 21. The outlet b of the oil supply channel 111 needs to be opposite to the sliding vane groove 61 to achieve the connection between the oil supply channel 111 and the sliding vane groove 61.

[0097] In this way, after the compressor is running normally, the lubricating oil in the bottom oil sump enters the oil supply channel inside the crankshaft 1 under the rotation of the crankshaft 1, enters the cavity 14 through the oil supply hole 12, then enters the flexible groove 22, and then enters the upper part of the sliding vane 9 and the assembly side gap between the sliding vane groove 61 and the sliding vane 9 through the oil supply channel 111. At this time, the two sides and the upper and lower gaps of the sliding vane 9 are filled with lubricating oil, and the gaps are further sealed by the lubricating oil, reducing the refrigerant leakage caused by the high pressure chamber passing through this gap, thereby reducing the loss of cooling capacity and improving the performance of the compressor. At the same time, the sufficient lubricating oil further ensures the lubrication effect of the reciprocating motion of the sliding vane 9 and improves the reliability of the compressor.

[0098] In some publicly available information, the upper muffler 3, upper flange 2, cylinder 6, crankshaft 1, rotor 5, vane 9, lower flange 7, and lower muffler 8 are assembled sequentially from top to bottom and secured with screws 4, together forming the pump body assembly.

[0099] Example 7

[0100] This embodiment only describes the differences from Embodiment Six. Specifically, the oil groove structure 11 is set on the lower flange 7, which can also fill the gaps on both sides and the upper and lower parts of the slide vane 9 with lubricating oil, ensuring that the slide vane 9 is always in a good lubricated state, which is beneficial to improving the operating stability and reliability of the compressor.

[0101] Example 8

[0102] This embodiment only describes the differences from Embodiment 6. Specifically, there are multiple cylinders 6, such as two. A partition is provided between the two cylinders 6. The oil groove structure 11 is freely combined and set on the upper flange 2, lower flange 7 or partition. Similarly, the two sides and the upper and lower gaps of the sliding vane 9 can be filled with lubricating oil, ensuring that the sliding vane 9 is always in a good lubrication state, which is beneficial to improving the operating stability and reliability of the compressor.

[0103] Example 9

[0104] This embodiment provides a rolling rotor compressor, including the pump body structure described above. The rolling rotor compressor of this application, due to the use of the pump body structure that allows for independent oil supply to the vane slots, ensures that the gaps on both sides and above and below the vanes are filled with lubricating oil. This further seals the gaps, reducing refrigerant leakage caused by the high-pressure chamber passing through these gaps, reducing cooling capacity loss, and improving compressor performance. Simultaneously, the ample lubricating oil further ensures the lubrication effect of the vane's reciprocating motion, improving the compressor's reliability.

[0105] As can be seen from the above description, the pump body structure and rolling rotor compressor of this application achieve lubrication of the sliding vanes by setting a separate oil supply channel on the flange to supply oil to the sliding vane groove, ensuring that the sliding vanes are always in a good lubrication state, which is conducive to improving the operating stability and reliability of the compressor.

[0106] In the description of this invention, it should be understood that the orientations or positional relationships indicated by terms such as "center," "front," "back," "up," "down," "left," "right," "horizontal," "vertical," "horizontal," and "top," "bottom," etc., are generally based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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 limiting the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0107] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0108] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0109] 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. A pump body structure, comprising a crankshaft (1), a flange and a cylinder (6), wherein the flange and the cylinder (6) are both sleeved on the crankshaft (1); The crankshaft (1) is provided with an oil supply hole (12), and the cylinder (6) is provided with a sliding vane groove (61). Its features are: An oil supply channel (111) is provided on the inner end face (23) of the flange facing the cylinder (6), and the oil supply channel (111) is configured to allow the lubricating oil in the oil supply hole (12) to flow to the slide groove (61). The crankshaft (1) has an eccentric portion with a thrust surface (13) facing the inner end face (23), and the thrust surface (13) is a stepped surface; A cavity (14) is formed between the inner end face (23) and the thrust face (13), and the oil supply hole (12) communicates with the cavity (14); The outlet of the oil supply channel (111) is positioned opposite to the sliding vane groove (61); A flexible groove (21) is provided on the inner end face (23), and the flexible groove (21) is an annular groove constructed around the center hole of the flange; The flexible groove (21) is connected to the cavity (14), and the inlet of the oil supply channel (111) is connected to the flexible groove (21).

2. The pump body structure according to claim 1, characterized in that, An installation groove (22) is provided on the inner end face (23), an oil groove structure (11) is provided in the installation groove (22), and an oil supply channel (111) is provided on the oil groove structure (11).

3. The pump body structure according to claim 2, characterized in that, The oil tank structure (11) is detachably installed in the mounting groove (22).

4. The pump body structure according to claim 1, characterized in that, The oil supply channel (111) has multiple outlets and is spaced apart along the extension direction of the slide groove (61).

5. The pump body structure according to claim 1, characterized in that, The cross-sectional shape of the oil supply channel (111) is circular, polygonal or I-shaped.

6. The pump body structure according to claim 1, characterized in that, The flange is either an upper flange (2) or a lower flange (7).

7. The pump body structure according to claim 1, characterized in that, There are multiple cylinders (6), and the flange is a partition plate disposed between two cylinders (6).

8. A rolling rotor compressor, characterized in that, Includes the pump body structure as described in any one of claims 1 to 7.

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