A cylinder and compressor

Abstract

The application belongs to the technical field of compressors and discloses a cylinder and a compressor. The cylinder comprises a cylinder body. A spring hole is formed in the side of the cylinder body along the radial direction of the cylinder body. The cylinder body is provided with a vane groove. The vane groove penetrates through the upper end face to the lower end face of the cylinder body along the axial direction of the cylinder body. The vane groove penetrates through the spring hole. The cylinder body is provided with an oil collecting hole penetrating through the vane groove along the axial direction of the cylinder body. The one end of the oil collecting hole located at the upper end face of the cylinder body is larger than the one end located at the lower end face of the cylinder body. The cylinder and the compressor provided by the application have simple structures and can fully and reliably lubricate the whole vane groove.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more particularly to a cylinder and a compressor. Background Technology

[0002] When the compressor is running, the blades inside the cylinder rub against the blade grooves at high speed, which is a high-risk point for abnormal wear. To improve the reliability of both operation, existing technology improves oil lubrication conditions by setting up an oil guide hole structure.

[0003] In existing technology, the oil guide hole is only built in the upper half of the blade groove. When the oil level is low, the lower half is at high risk of wear. Furthermore, the straight hole design results in a faster oil flow rate, which may not provide sufficient lubrication. Summary of the Invention

[0004] The purpose of this invention is to provide a cylinder and compressor with a simple structure that can provide sufficient and reliable lubrication for the entire blade groove.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A cylinder includes a cylinder body; wherein,

[0007] The cylinder body has a spring hole on its side along its radial direction, and a blade groove is provided on the cylinder body. The blade groove extends from the upper end face to the lower end face of the cylinder body along the axial direction of the cylinder body, and the blade groove passes through the spring hole.

[0008] The cylinder body has an oil collection hole that penetrates the blade groove along its own axial direction, and the end of the oil collection hole located on the upper end face of the cylinder body is larger than the end located on the lower end face of the cylinder body.

[0009] Preferably, the oil collecting hole includes a first hole portion and a second hole portion;

[0010] The first hole is configured as a tapered hole whose diameter gradually decreases from the upper end face of the cylinder to the spring hole; and / or,

[0011] The second hole is configured as a tapered hole with a diameter that gradually decreases from the spring hole to the lower end face of the cylinder.

[0012] Preferably, the first hole forms two symmetrically arranged first grooves on the opposite side walls of the blade groove, and the second hole forms two symmetrically arranged second grooves on the opposite side walls of the blade groove.

[0013] Preferably, the first hole and the second hole are arranged along the same axis.

[0014] Preferably, the generatrix of the first tapered hole and the generatrix of the second tapered hole are located on the same straight line.

[0015] Preferably, the cylinder body includes a main body and a fan-shaped portion protruding from the main body, the spring hole extends from the outer side wall of the fan-shaped portion to the main body, and the blade groove extends from the inner side wall of the main body to the fan-shaped portion;

[0016] On the upper end face of the cylinder, the fan-shaped part is connected to the main body part through an oil collection groove, and the oil collection hole is opened on the oil collection groove.

[0017] Preferably, on the upper end face of the cylinder body, the fan-shaped portion is inclined downward along the radial direction of the cylinder body towards the oil collection groove.

[0018] Preferably, the oil collecting groove includes a first side and a second side extending to the two edges of the fan-shaped portion, respectively, and the oil collecting hole is opened between the first side and the second side of the oil collecting groove, and the first side and the second side of the oil collecting groove are respectively inclined downward toward the side where the oil collecting hole is opened.

[0019] Preferably, the system also includes an upper cylinder cover disposed on the cylinder body. The upper cylinder cover has a plurality of oil return holes along its circumference. At least one of the oil return holes is located above the fan-shaped portion. The lubricating oil flowing out of the oil return hole located above the fan-shaped portion can fall into the fan-shaped portion and flow into the oil collection groove.

[0020] A compressor, comprising:

[0021] shell;

[0022] The cylinder as described in any of the preceding claims is disposed within the housing.

[0023] Beneficial effects:

[0024] The cylinder provided by this invention features an oil collecting hole that extends axially through the blade groove on the cylinder body. When lubricating oil pumped up by the pump blades flows down from the upper part of the housing, it passes through the oil collecting hole, meaning the lubricating oil flows from the upper end face of the cylinder body to the lower end face, passing through the entire blade groove, thus reliably lubricating the entire blade groove. Furthermore, the end of the oil collecting hole on the upper end face of the cylinder body is larger than the end on the lower end face. When the lubricating oil flows through the oil collecting hole, the reduced hole diameter further slows the flow rate, thereby providing sufficient and reliable lubrication to the blade groove.

[0025] The compressor provided by this invention uses the aforementioned cylinder, which has a simple structure and can provide sufficient and reliable lubrication to the entire blade groove, optimize the lubrication conditions between the blades and the cylinder blade groove, and improve the reliability of the compressor pump body. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the cylinder block provided by the present invention;

[0027] Figure 2 This is a structural cross-sectional view of the cylinder block provided by the present invention;

[0028] Figure 3 This is a schematic diagram of the cylinder provided by the present invention.

[0029] In the picture:

[0030] 1. Cylinder block; 101. Spring hole; 102. Blade groove; 103. First hole; 1031. First groove; 104. Second hole; 1041. Second groove; 11. Body part; 12. Sector-shaped part; 13. Oil collection groove; 14. Transition fillet;

[0031] 2. Upper cylinder head; 21. Oil return hole. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0033] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0036] This embodiment provides a cylinder. (Refer to...) Figures 1 to 3 As shown, the cylinder includes a cylinder body 1. A spring hole 101 is formed on the side of the cylinder body 1 along its radial direction. A vane groove 102 is formed on the cylinder body 1, extending from the upper end face to the lower end face of the cylinder body 1 along its axial direction, and the vane groove 102 passes through the spring hole 101. An oil collecting hole is formed on the cylinder body 1 along its axial direction, penetrating the vane groove 102. The end of the oil collecting hole on the upper end face of the cylinder body 1 is larger than the end on the lower end face of the cylinder body 1.

[0037] In this embodiment, by opening an oil collecting hole along its axial direction through the vane groove 102 on the cylinder body 1, the lubricating oil pumped up by the pump blades flows down from the upper part of the housing and passes through the oil collecting hole. That is, the lubricating oil flows from the upper end face to the lower end face of the cylinder body 1, passing through the entire vane groove 102, thereby reliably lubricating the entire vane groove 102. In addition, the end of the oil collecting hole on the upper end face of the cylinder body 1 is larger than the end on the lower end face of the cylinder body 1. When the lubricating oil flows through the oil collecting hole, the flow rate is further slowed down due to the reduced hole diameter, thus providing sufficient and reliable lubrication to the vane groove 102.

[0038] Specifically, the oil collecting hole includes a first hole portion 103 and a second hole portion 104. The first hole portion 103 is configured as a tapered hole with a gradually decreasing diameter from the upper end face of the cylinder body 1 to the spring hole 101; and / or, the second hole portion 104 is configured as a tapered hole with a gradually decreasing diameter from the spring hole 101 to the lower end face of the cylinder body 1. Preferably, both the first hole portion 103 and the second hole portion 104 are tapered holes.

[0039] When the lubricating oil pumped up by the pump plate flows down from the top of the housing, it flows sequentially through the first hole 103 and the second hole 104. That is, the lubricating oil flows from the upper end face of the cylinder body 1 to the lower end face, passing through the entire blade groove 102, thereby reliably lubricating the entire blade groove 102. Furthermore, since both the first hole 103 and the second hole 104 are tapered holes, the flow rate of the lubricating oil slows down uniformly during the flow process, achieving a sufficient and reliable lubrication effect on the blade groove 102.

[0040] Specifically, the minimum diameter of the conical first hole 103 is ΦD1, and the maximum diameter of the conical second hole 104 is ΦD2, where ΦD1 > ΦD2.

[0041] In this embodiment, the first hole 103 and the second hole 104 are arranged coaxially. This arrangement facilitates processing, allowing the first hole 103 and the second hole 104 to be formed in one pass.

[0042] In this embodiment, the generatrix of the tapered first hole 103 and the generatrix of the tapered second hole 104 are on the same straight line. This arrangement facilitates processing, allowing the first hole 103 and the second hole 104 to be formed in one continuous process.

[0043] In this embodiment, the first hole 103 forms two symmetrically arranged first grooves 1031 on the opposite side walls of the blade groove 102, and the second hole 104 forms two symmetrically arranged second grooves 1041 on the opposite side walls of the blade groove 102. The center of the first hole 103 and the center of the second hole 104 are both located on the centerline between the two side walls of the blade groove 102. This arrangement ensures that the lubricating oil can uniformly lubricate the opposite side walls of the blade groove 102 during flow, avoiding uneven lubrication caused by insufficient lubricating oil on one side.

[0044] In addition to being tapered, the first hole 103 and the second hole 104 can also be configured as other shapes. For example, the two sides of the axial cross-section of the first hole 103 and the second hole 104 are concave arc-shaped cross-section lines, or the two sides of the axial cross-section of the first hole 103 and the second hole 104 are configured as stepped cross-section lines that gradually slope inward.

[0045] Specifically, in this embodiment, the cylinder body 1 includes a main body 11 and a fan-shaped portion 12 protruding from the main body 11. A spring hole 101 extends from the outer side wall of the fan-shaped portion 12 to the main body 11, and a blade groove 102 extends from the inner side wall of the main body 11 to the fan-shaped portion 12. At the upper end face of the cylinder body 1, the fan-shaped portion 12 and the main body 11 are connected by an oil collecting groove 13, and an oil collecting hole is formed on the oil collecting groove 13. Specifically, the lubricating oil pumped up by the pump blades flows down from the upper part of the housing, flows through the fan-shaped inclined surface to the oil collecting groove 13, and finally falls into the oil collecting hole through the oil collecting groove 13.

[0046] In this embodiment, the diameter of the first hole 103 of the oil collecting hole is larger than the diameter of the oil collecting groove 13. This arrangement facilitates processing and ensures that the lubricating oil in the oil collecting groove 13 reliably and sufficiently falls into the first hole 103.

[0047] In some other alternative embodiments, the diameter of the first hole 103 may be less than or equal to the width of the oil collection groove 13, and can be adapted to meet actual needs.

[0048] In this embodiment, on the upper end face of the cylinder body 1, the fan-shaped portion 12 is inclined downward along the radial direction of the cylinder body 1 towards the oil collection groove 13. See details [link to specific details]. Figures 1 to 2 As shown, a first contour arc A is provided on the outer side of the fan-shaped portion 12, and a second contour arc B is formed at the connection between the fan-shaped portion 12 and the oil collection groove 13. The distance between the first contour arc A and the lower end face of the cylinder is H1, and the distance between the second contour arc B and the lower end face of the cylinder is H2. H1 and H2 satisfy the condition that H1 > H2. With this configuration, after the lubricating oil flows onto the fan-shaped portion 12, it can automatically flow to the oil collection groove 13 along the inclined surface of the fan-shaped portion 12 under the action of gravity.

[0049] In this embodiment, the oil collecting groove 13 includes a first side and a second side extending to the two edges of the fan-shaped portion 12, respectively. An oil collecting hole is formed between the first side and the second side of the oil collecting groove 13, and the first side and the second side of the oil collecting groove 13 are respectively inclined downward toward the side where the oil collecting hole is formed. Specifically, the distance from the upper end face to the lower end face of the first side of the oil collecting groove 13 is h1, the distance from the upper end face to the lower end face of the second side of the oil collecting groove 13 is h2, and the distance from the upper end face to the lower end face of the oil collecting hole is h3. h1, h2, and h3 satisfy: h1 > h3, h2 > h3.

[0050] This configuration allows the lubricating oil falling into the first and second sides of the oil collection tank 13 to automatically flow to the oil collection hole under the action of gravity, thus achieving reliable flow of lubricating oil.

[0051] In this embodiment, the main body 11 and the fan-shaped part 12 are connected by a transition fillet 14. Specifically, the oil collecting groove 13 extends to the corresponding transition fillet 14 on both sides.

[0052] In this embodiment, the cylinder also includes an upper cylinder cover 2 disposed on the cylinder body 1. The upper cylinder cover 2 has a plurality of oil return holes 21 along its circumference. At least one oil return hole 21 is located above the fan-shaped portion 12. The lubricating oil flowing out of the oil return hole 21 located above the fan-shaped portion 12 can fall into the fan-shaped portion 12 and flow into the oil collection groove 13. Specifically, in this embodiment, a plurality of oil return holes 21 are evenly distributed at equal intervals along the circumference of the upper cylinder cover 2, and one of the oil return holes 21 is located above the fan-shaped portion 12.

[0053] This embodiment also provides a compressor. The compressor includes a housing and the aforementioned cylinder disposed within the housing.

[0054] By using the aforementioned cylinder within the compressor, all the beneficial effects of the aforementioned cylinder can be achieved, ensuring sufficient and reliable lubrication of the entire blade groove 102, optimizing the lubrication conditions between the blades and the cylinder blade groove 102, and improving the reliability of the compressor pump body.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A gas cylinder characterized by, The cylinder (1) comprises a body (11) and a fan-shaped part (12) protruding outwardly from the body (11), the spring hole (101) extends from the outer side wall of the fan-shaped part (12) to the body (11), and the vane groove (102) extends from the inner side wall of the body (11) to the fan-shaped part (12). The upper end surface of the cylinder (1) is connected to the body (11) and the fan-shaped part (12) by an oil collecting groove (13), and the oil collecting hole is arranged on the oil collecting groove (13). The upper end surface of the cylinder (1) is connected to the body (11) and the fan-shaped part (12) by an oil collecting groove (13), and the oil collecting hole is arranged on the oil collecting groove (13). The oil collecting groove (13) comprises a first side and a second side extending to the two side edges of the fan-shaped part (12), respectively, and the oil collecting hole is arranged between the first side and the second side of the oil collecting groove (13), and the first side and the second side of the oil collecting groove (13) are inclined downwardly towards the side of the oil collecting hole. The oil collecting hole comprises a first hole part (103) and a second hole part (104). The first hole part (103) is arranged as a tapered hole with a diameter gradually decreasing from the upper end surface of the cylinder (1) to the spring hole (101); and / or The second hole part (104) is arranged as a tapered hole with a diameter gradually decreasing from the spring hole (101) to the lower end surface of the cylinder (1).

2. The air cylinder of claim 1, wherein The first hole part (103) forms two symmetrical first grooves (1031) on the opposite side walls of the vane groove (102), and the second hole part (104) forms two symmetrical second grooves (1041) on the opposite side walls of the vane groove (102). The first hole part (103) and the second hole part (104) are coaxially arranged. The generatrix of the tapered first hole part (103) and the generatrix of the tapered second hole part (104) are located on the same straight line.

3. The air cylinder of claim 2, wherein, The upper cylinder cover (2) is arranged on the cylinder (1), the upper cylinder cover (2) is arranged with a plurality of oil return holes (21) along the circumferential direction, at least one of the oil return holes (21) is located above the fan-shaped part (12), and the lubricating oil flowing out of the oil return hole (21) located above the fan-shaped part (12) can fall into the fan-shaped part (12) and flow into the oil collecting groove (13).

4. The air cylinder of claim 2, wherein, The cylinder comprises:

5. The air cylinder of claim 2, wherein, A housing; 6. The air cylinder of claim 1, wherein The cylinder according to any one of claims 1-6 is arranged in the housing.

7. A compressor characterized by, ​ ​ ​

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