WO2020052128A1

WO2020052128A1 - Pump body and sliding-vane compressor

Info

Publication number: WO2020052128A1
Application number: PCT/CN2018/120673
Authority: WO
Inventors: 魏会军; 罗发游; 万鹏凯; 吴飞; 张荣婷; 文智明
Original assignee: 珠海格力节能环保制冷技术研究中心有限公司
Priority date: 2018-09-12
Filing date: 2018-12-12
Publication date: 2020-03-19
Also published as: CN108980040A

Abstract

Disclosed are a pump body and a sliding-vane compressor. The pump body comprises: an air cylinder assembly (10), the air cylinder assembly (10) comprising a cylinder body (11) and a rotary bearing cylinder (12) rotationally arranged therein; an upper flange (20) and a lower flange (30); the upper flange (20) and the lower flange (30) being respectively arranged at two end faces of the air cylinder assembly (11); and the end faces of the rotary bearing cylinder(12) being respectively in rolling contact with the upper flange (20) and the lower flange (30). As the end faces of the rotary bearing cylinder (12) are respectively in rolling contact with the upper flange (20) and the lower flange (30), the problem of friction abrasion of the end faces of the rotary bearing cylinder (12) can be effectively relieved in the actual working process, thereby prolonging the service life of the rotary bearing cylinder (12)and improving the reliability of the compressor.

Description

Pump body and sliding vane compressor

Technical field

The invention relates to the technical field of compression devices, in particular to a pump body and a sliding vane compressor.

Background technique

Compared with other types of compressors, sliding vane compressors have the advantages of simple parts, no eccentric structure, and low torque and stable vibration. They are used in many fields.

Sliding vane compressors are generally equipped with multiple sliding vanes. The operating principle is as follows: When the spindle rotates, the sliding vanes in the sliding vane groove of the spindle will make a composite movement together. The rotation of the main shaft changes continuously and cyclically to achieve compression or expansion.

At present, there is a technology that proposes an optimized structure of a sliding vane rotary compressor, which uses a cylinder block and a bearing rotary cylinder instead of a traditional cylinder, thereby greatly reducing the power consumption between the sliding vane head and the inner wall of the cylinder body, and improving the performance of the compressor. However, in order to ensure the tightness of the pump body cavity, the design value of the gap between the bearing rotary cylinder and the upper and lower flanges is small. When the compressor is operating normally, the bearing rotary cylinder is easily generated under its own gravity, gas fluctuations and sliding plate friction. The axial movement, coupled with the rotation of the bearing rotary cylinder and relative movement with the upper and lower flange end faces, and its large diameter and large linear velocity, so the power consumption between the bearing rotary cylinder and the upper and lower flange end faces cannot be ignored.

In order to improve the power consumption of the upper and lower end surfaces of the rotary vane bearing rotary compressor and improve the performance and reliability of the compressor, it is very important to effectively improve the friction between the upper and lower end surfaces of the bearing rotary cylinder. The proposed patent application is to invent an optimized structure of the bearing rotor end face, which can improve the friction of the bearing end face, reduce the power consumption here, and improve the performance and reliability of the compressor.

Summary of the Invention

The main purpose of the present invention is to provide a pump body and a sliding vane compressor to solve the problem of large power consumption between the bearing rotary cylinder and the upper and lower flange end faces of the sliding vane compressor in the prior art.

In order to achieve the above object, according to an aspect of the present invention, a pump body is provided, including: a cylinder assembly including a cylinder block and a bearing rotary cylinder rotatably disposed inside the cylinder block; an upper flange And lower flange, the upper flange and the lower flange are respectively disposed on both end faces of the cylinder assembly, and the rolling surface between the bearing rotary cylinder and the upper flange and the lower flange are rolling contact.

Further, the pump body further includes a first ball assembly, and the first ball assembly is installed between the bearing rotary cylinder and the upper flange to form the rolling contact.

Further, a first mounting hole is provided at an upper end of the bearing rotary cylinder or a bottom of the upper flange, and the first ball assembly includes a first elastic element, and the first elastic element is installed in the first A mounting ball; a first ball mounted in the first mounting hole and between the bearing rotary cylinder and the first elastic element;

Further, the first ball assembly further includes a first pad, and the first pad is located between the first ball and the first elastic element.

Further, the pump body further includes a second ball assembly, and the second ball assembly is installed between the bearing rotary cylinder and the lower flange to form the rolling contact.

Further, a second mounting hole is provided at the bottom end of the bearing rotary cylinder or the top of the lower flange, and the second ball assembly includes a second elastic element, and the second elastic element is installed in the first elastic element. Two mounting holes; a second ball, the second ball is installed in the second mounting hole and is between the bearing rotary cylinder and the second elastic element.

Further, the second ball assembly further includes a second pad, and the second pad is located between the second ball and the second elastic element.

Further, each of the first ball component and the second ball component is 3 or more, and the numbers of the first ball component and the second ball component are equal.

Further, the rigidity of _the first elastic element is K, the rigidity of _the second elastic member is K, the amount of stretching of the first elastic member and the second elastic member are X, the second The number of one mounting hole and the second mounting hole are both N, the gravity of the bearing rotary cylinder is a G _{rotary cylinder} , the gravity of the first ball and the second ball are both G _balls , and the first The gravity of the gasket and the second gasket are both G _gaskets , and the gravity of the first elastic member and the second elastic member are both G _{elastic members} , where X + 2N (G _Ball + G _on K _Gasket ) + NG _{elastic element} + G _{rotary cylinder} = K _under X.

Further, the depth of the first mounting hole and the second mounting hole is H, the length of the first elastic element and the second elastic element after assembly is L, and the first ball and the The diameter of the second ball is D, and the thickness of the first pad and the second pad are both b, where L + D + bH = 0.01-0.02 mm.

Further, the diameters of the first mounting hole and the second mounting hole are both D1, and the diameters of the first ball and the second ball are D, where D1-D = 0.1-0.5 mm.

Further, an arc chamfer is provided at each of the openings of the first mounting hole and the second mounting hole.

Further, a minimum distance between an outer edge of the first mounting hole and an inner ring and an outer circle of the bearing rotary cylinder is not less than 0.02 mm, and an outer edge of the second mounting hole and an inner circle of the bearing rotary cylinder are not less than 0.02 mm. The minimum distance between the ring and the outer circle is not less than 0.02mm.

According to another aspect of the present invention, there is provided a sliding vane compressor including a pump body, and the pump body is the aforementioned pump body.

By applying the technical solution of the present invention, since the end surface of the bearing rotary cylinder in the present invention is in rolling contact with the upper flange and the lower flange, in actual work, the problem of friction and wear on the end surface of the bearing rotary cylinder can be effectively improved and extended. The service life of the bearing rotary cylinder improves the reliability of the compressor.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the descriptions thereof are used to explain the present invention, and do not constitute an improper limitation on the present invention. In the drawings:

FIG. 1 schematically illustrates an exploded view of a pump body of the present invention;

FIG. 2 schematically illustrates a cross-sectional view of a pump body of the present invention;

FIG. 3 schematically illustrates an enlarged view of an area A in FIG. 2; FIG.

4 schematically shows a plan view of the pump body of the present invention after the upper flange is removed;

5 schematically illustrates an exploded view of a cylinder assembly of the present invention;

6 is a perspective view schematically showing an upper flange of the present invention;

7 schematically illustrates a bottom view of the upper flange of the present invention;

FIG. 8 schematically illustrates a perspective view of a lower flange of the present invention;

FIG. 9 schematically illustrates a top view of a lower flange of the present invention.

The above drawings include the following reference signs:

10. Cylinder assembly; 11. Cylinder block; 12. Bearing rotary cylinder; 13. Rolling element; 20. Upper flange; 21. First mounting hole; 30; Lower flange; 31. Second mounting hole; A ball assembly; 41, a first elastic element; 42, a first ball; 43, a first washer; 50, a second ball assembly; 51, a second elastic element; 52, a second ball; 53, a second washer 60, sliding plate; 70, main shaft; 71, sliding plate groove; 80, screw.

detailed description

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should also be understood that when the terms "including" and / or "including" are used in this specification, they indicate There are features, steps, operations, devices, components, and / or combinations thereof.

Unless specifically stated otherwise, the relative arrangement of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods, and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but where appropriate, the techniques, methods, and equipment should be considered as part of the authorization specification. In all examples shown and discussed herein, any specific value should be construed as exemplary only and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings, so once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

1 to 9, a pump body is provided according to an embodiment of the present invention. The pump body in this embodiment includes a main shaft 70, a cylinder assembly 10, an upper flange 20, and a lower flange 30.

Among them, the cylinder assembly 10 is sleeved on the main shaft 70, and the main shaft 70 is provided with a sliding blade groove 71, and a sliding blade 60 is installed in the sliding blade groove 71. The sliding blade 60 is installed inside the cylinder assembly 10, and the upper flange 20 and The lower flange 30 is respectively disposed on both end surfaces of the cylinder assembly 10, and the cylinder assembly 10 is fixed on the main shaft 70 by screws 80 passing through the cylinder assembly 10, the upper flange 20 and the lower flange 30.

When the other driving device drives the main shaft 70 to rotate, the sliding plate 60 slides in the sliding plate groove 71 to compress the refrigerant in the cylinder assembly 10, and the compressed refrigerant is discharged from the exhaust hole on the upper flange 20.

The cylinder assembly 10 in this embodiment includes a cylinder block 11 and a bearing rotary cylinder 12 rotatably disposed inside the cylinder. A rolling element 13 is provided between the cylinder block 11 and the bearing rotary cylinder 12 so as to improve the service life of the cylinder assembly 10 , Reduce the noise of the pump body; in this embodiment, the end face of the bearing rotary cylinder 12 and the upper flange 20 and the lower flange 30 are in rolling contact.

Since the end surface of the bearing rotor 12 and the upper flange 20 and the lower flange 30 are in rolling contact in this embodiment, in actual work, the problem of friction and wear on the end surface of the bearing rotor 12 can be effectively improved, and the bearing rotation can be extended. The service life of the cylinder 12 improves the reliability of the compressor.

In a preferred embodiment of the present invention, the pump body further includes a first ball assembly 40 that is installed between the bearing rotary cylinder 12 and the upper flange 20 to form rolling contact.

Specifically, the first ball assembly 40 in this embodiment includes a first elastic element 41 and a first ball 42. In order to facilitate installation, the upper end of the bearing rotary cylinder 12 or the bottom of the upper flange 20 in this embodiment is provided with a first mounting hole 21. During installation, the first elastic element 41 is installed in the first mounting hole 21; and the first ball 42 is installed in the first mounting hole 21 between the bearing rotary cylinder 12 and the first elastic element 41.

Through the function of the first ball assembly 40 in this embodiment, a certain axial limit of the bearing rotary cylinder 12 can be restricted, and the axial movement of the bearing rotary cylinder 12 is restricted, thereby reducing the shaft of the bearing rotary cylinder 12 when the pump body is running. To the risk of impact, improve the noise and vibration of the pump body. At the same time, the function of the first ball assembly 40 of the present invention can also ensure that the gap between the upper end surface of the bearing rotary cylinder 12 and the upper flange 20 is uniform, which is beneficial to the lubrication and sealing of the lubricating oil, improving the internal leakage of the pump body, and improving Compressor performance.

Preferably, the first ball assembly in this embodiment further includes a first washer 43, which is located between the first ball 42 and the first elastic element 41 so that the first ball 42 is not elastic to the first ball 42. The element 41 is in direct contact with the first pad 43 to reduce the friction at the bottom of the first ball 42.

The first elastic element 41 in this embodiment is a structure such as a spring or an elastic washer, as long as it is other deformation modes under the concept of the present invention, it is within the protection scope of the present invention.

Correspondingly, the pump body in this embodiment further includes a second ball assembly 50, which is installed between the bearing rotary cylinder 12 and the lower flange 30 to form rolling contact.

Specifically, the second ball assembly 50 in this embodiment includes a second elastic element 51 and a second ball 52. For ease of installation, the bottom end of the bearing rotary cylinder 12 or the top of the lower flange 30 in this embodiment is provided with a second mounting hole 31. During installation, the second elastic element 51 is installed in the second mounting hole 31; the second ball 52 is installed in the second mounting hole 31 and is located between the bearing rotary cylinder 12 and the second elastic element 51.

Through the function of the second ball assembly 50 in this embodiment, it is possible to limit the axial direction of the bearing rotary cylinder 12 and restrict the axial movement of the bearing rotary cylinder 12, thereby reducing the shaft of the bearing rotary cylinder 12 when the pump body is running. To the risk of impact, improve the noise and vibration of the pump body. At the same time, the function of the second ball assembly 50 of the present invention can also ensure that the gap between the lower end surface of the bearing rotor 12 and the lower flange 30 is uniform, which is beneficial to the lubrication and sealing of the lubricating oil, improving the internal leakage of the pump body, Compressor performance.

Preferably, the second ball assembly 50 in this embodiment further includes a second washer 53, which is located between the second ball 52 and the second elastic element 51 so that the second ball 52 is not in contact with the second ball 52. The elastic element 51 is in direct contact with the second pad 53 to reduce the friction at the bottom of the second ball 52.

In order to facilitate the stable support of the bearing rotary cylinder 12, the first ball assembly 40 and the second ball assembly 50 in this embodiment are both 3 or more, and the numbers of the first ball assembly 40 and the second ball assembly 50 are equal. Referring to FIG. 1 to FIG. 9, the number of the first ball assembly 40 and the second ball assembly 50 in this embodiment are four, and they are evenly arranged along the circumferential direction of the bearing rotary cylinder 12.

The second elastic element 51 in this embodiment is a structure such as a spring or an elastic washer, as long as it is other deformation modes under the concept of the present invention, it is within the protection scope of the present invention.

Considering the gravity of the bearing rotor 12, by designing the stiffness of the first elastic element 41 and the second elastic element 51, the bearing rotor 12 and the upper method are realized under the action of the elastic force of the first elastic element 41 and the second elastic element 51. The gaps between the end faces of the blue 20 and the lower flange 30 are evenly distributed.

The gravity of the bearing rotary cylinder 12 faces the lower flange 30, so the stiffness design of the second elastic element 51 disposed on the lower flange 30 and the first elastic element 41 disposed on the upper flange 20 should be different to ensure the same A mounting hole 21 and a second mounting hole 31 are deep, and the initial length of the first elastic element 41 and the second elastic element 51, the upper and lower end faces of the bearing rotary cylinder 12 are subjected to a large reversal, such as:

X _on K + 2N (G _ball + G _gasket ) + NG _{elastic element} + G _{rotary cylinder} = K _under X

Wherein the stiffness of the first elastic member 41 is K, _on the stiffness of the second elastic member 51 is _under K, the first elastic member 41 and the second elastic member 51 is telescopically amount X, 21 mounting the first and second mounting holes The number of holes 31 is N, the gravity of the bearing rotary cylinder 12 is a G _{rotary cylinder} , the gravity of the first ball 42 and the second ball 52 are both G _balls , and the gravity of the first washer 43 and the second washer 53 are both The gravity of the G _gasket , the first elastic element 41 and the second elastic element 51 are all G _{elastic elements} .

In this embodiment, the depths of the first mounting hole 21 and the second mounting hole 31 are both H, the length of the first elastic element 41 and the second elastic element 51 after assembly is L, and the first ball 42 and the second ball 52 The diameters of both are D, and the thicknesses of the first gasket 43 and the second gasket 53 are both b, where L + D + bH = 0.01-0.02 mm. That is, it is ensured that the bearing rotary cylinder 12 maintains a gap of about 0.01 to 0.02 mm with the end faces of the upper flange 20 and the lower flange 30 under the support of the elastic force of the first elastic element 41 and the second elastic element 51.

In this embodiment, the diameters of the first mounting hole 21 and the second mounting hole 31 are both D1, and the diameters of the first ball 42 and the second ball 52 are D. Among them, D1-D = 0.1 to 0.5 mm, which is convenient for the first time. A ball 42 and a second ball 52 move in the corresponding mounting holes.

Preferably, the openings of the first mounting hole 21 and the second mounting hole 31 in this embodiment are provided with rounded chamfers, which is not only convenient for installing the first ball assembly 40 and the second ball assembly 50, but also convenient for the first The movement of one ball 42 and the second ball 52 reduces the noise of the pump body and improves the performance of the compressor.

In this embodiment, the minimum distance between the outer edge of the first mounting hole 21 and the inner ring and the outer circle of the bearing rotary cylinder 12 is not less than 0.02 mm. The outer edge of the second mounting hole 31 and the inner ring of the bearing rotary cylinder 12 and The minimum distance of the outer circle is not less than 0.02mm.

Through the pump body mechanism of the present invention, the upper and lower end surfaces of the bearing rotary cylinder 12 are restrained by the spring and the first ball 42 and the second ball 52 when the bearing rotor 12 is in motion, which can effectively avoid the axial movement during the movement.

6 to 9, the first flange 20 of the present invention is provided with a plurality of first mounting holes 21, the lower flange 30 is provided with a plurality of second mounting holes 31, a plurality of first mounting holes 21 and a second The circle centers of the mounting holes 31 are all on the center line B of the contact surfaces of the bearing rotary cylinder 12 and the upper flange 20 and the lower flange 30.

Preferably, the first ball 42 and the second ball 52 in this embodiment are made of a bearing steel material, the first washer 43 and the second washer 53 are made of a wear-resistant material, and the spring material is normal spring steel.

The cylinder block 11 is a ring-mounted bearing steel ring, and rolling elements 13 evenly distributed in the circumferential direction are arranged between the cylinder block 11 and the bearing rotary cylinder 12.

When the pump body is running, the motor drives the main shaft 70 and the sliding plate 60 to move. The sliding plate 60 drives the bearing rotary cylinder 12 to rotate. The first ball 42 and the second ball 52 are acted by the first elastic element 41 and the second elastic element 51. Will support the bearing rotor 12 and keep a gap of 0.01-0.02mm between the upper and lower end faces of the upper flange 20 and the lower flange 30, so that the bearing rotor 12 does not contact the end faces of the upper flange 20 and the lower flange 30 , The previous sliding friction between the two is converted into rolling friction between the bearing rotary cylinder 12 and the first ball 42 and the second ball 52.

According to another aspect of the present invention, there is provided a sliding vane compressor including a pump body, which is the pump body in the above embodiment.

From the above description, it can be seen that the foregoing embodiments of the present invention achieve the following technical effects:

1. Through the optimized structure of the bearing rotary cylinder end face, the sliding friction between the bearing rotary cylinder and the upper and lower flange end faces can be converted into rolling friction, which can effectively reduce the friction power consumption of the bearing rotary cylinder end face and improve the compressor performance;

2.The optimized structure of the end surface of the bearing rotary cylinder converts the sliding friction between the bearing rotary cylinder and the upper and lower flange end surfaces into rolling friction, which can effectively improve the friction and wear problem of the bearing rotary cylinder end surface, extend the service life of the rotary cylinder, and improve the reliability of the compressor. Sex

3. Through the optimized structure of the bearing rotary cylinder end face, it can limit the axial direction of the bearing rotary cylinder to restrict the axial movement of the bearing rotary cylinder, thereby reducing the risk of axial impact of the bearing rotary cylinder when the compressor is running, and improving the compressor. Noise and vibration

4. Through the optimized structure of the end face of the bearing rotary cylinder, it can ensure that the gap between the upper and lower end faces of the bearing rotary cylinder and the upper and lower flanges is uniform, which is conducive to the lubrication and sealing of the lubricating oil, improve the internal leakage of the pump body, and improve the performance of the compressor.

It can be seen that the invention adopts the optimized design of the bearing rotor end face, which can effectively improve the friction and wear of the bearing rotor end face and the upper and lower flanges, and improve the performance and reliability of the compressor. At the same time, the structure of the invention can restrain the bearing rotor The axial movement improves the noise and vibration of the compressor during operation. In addition, the structure of the invention can effectively improve the gap distribution of the upper and lower end faces of the bearing rotary cylinder, which is beneficial to the lubrication and sealing of the end faces, reduces pump body leakage, and improves compressor performance .

In the description of the present invention, it needs to be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal", "top, bottom" and the like indicate the orientation Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these orientation words do not indicate and imply the device or element referred to. It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the scope of protection of the present invention; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For the convenience of description, spatially relative terms such as "above", "above", "above", "above", etc. can be used here to describe as shown in the figure Shows the spatial position relationship between one device or feature and other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device as described in the figures. For example, if a device in the figure is turned over, devices described as "above" or "above" other devices or constructions will then be positioned "below the other devices or constructions" or "under Other devices or constructs. " Thus, the exemplary term "above" may include both directions "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or at other orientations), and the relative description of space used here is explained accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to limit parts is only for the convenience of distinguishing the corresponding parts. Unless otherwise stated, the above terms have no special meaning and cannot be understood. To limit the scope of protection of the present invention.

The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

A pump body, comprising:

A cylinder assembly (10) including a cylinder block (11) and a bearing rotary cylinder (12) rotatably disposed inside the cylinder block (11);

An upper flange (20) and a lower flange (30), the upper flange (20) and the lower flange (30) are respectively disposed on both end faces of the cylinder assembly (10), and the bearing rotary cylinder (12) Both the end surface and the upper flange (20) and the lower flange (30) are in rolling contact.
The pump body according to claim 1, characterized in that the pump body further comprises a first ball assembly (40), the first ball assembly (40) being mounted on the bearing rotor (12) and the bearing The upper flanges (20) form the rolling contact.
The pump body according to claim 2, characterized in that the upper end of the bearing rotary cylinder (12) or the bottom of the upper flange (20) is provided with a first mounting hole (21), and the first ball Component (40) includes:

A first elastic element (41) installed in the first mounting hole (21);

A first ball (42), the first ball (42) is installed in the first mounting hole (21) and is located between the bearing rotary cylinder (12) and the first elastic element (41).
The pump body according to claim 3, wherein the first ball assembly further comprises a first spacer (43), and the first spacer (43) is located between the first ball (42) and the first ball (42). The first elastic element (41) is described.
The pump body according to claim 4, characterized in that the pump body further comprises a second ball assembly (50), the second ball assembly (50) being mounted on the bearing rotor (12) and the bearing The lower flanges (30) form the rolling contact.
The pump body according to claim 5, characterized in that the bottom end of the bearing rotary cylinder (12) or the top of the lower flange (30) is provided with a second mounting hole (31), and the second Ball assembly (50) includes:

A second elastic element (51), which is installed in the second mounting hole (31);

A second ball (52), the second ball (52) is installed in the second mounting hole (31) and is between the bearing rotary cylinder (12) and the second elastic element (51).
The pump body according to claim 6, wherein the second ball assembly (50) further comprises a second washer (53), and the second washer (53) is located on the second ball (52) ) And said second elastic element (51).
The pump body according to claim 5, characterized in that each of the first ball assembly (40) and the second ball assembly (50) is 3 or more, and the first ball assembly (40) and The number of the second ball components (50) is equal.
The pump body according to claim 7, characterized in that the stiffness of the first elastic element (41) is K above , the stiffness of the second elastic element (51) is K below , and the first elastic element (41) and the second elastic element (51) both have a telescopic amount of X, the number of the first mounting hole (21) and the second mounting hole (31) are both N, and the bearing rotary cylinder The gravity of (12) is a G -cylinder , and the gravity of the first ball (42) and the second ball (52) are both G balls , and the first washer (43) and the second washer The gravity of (53) is a G gasket , and the gravity of the first elastic element (41) and the second elastic element (51) are both G elastic elements , wherein:

The K X + 2N (G + G spacer balls) + NG + G an elastic member with the rotary cylinder = lower K X.
The pump body according to claim 7, characterized in that a depth of the first mounting hole (21) and the second mounting hole (31) is H, and the first elastic element (41) and the After the second elastic element (51) is assembled, the length is L, the diameter of the first ball (42) and the second ball (52) is D, and the first spacer (43) and the first The thickness of the two gaskets (53) is b, where:

L + D + b-H = 0.01 ~ 0.02mm.
The pump body according to claim 7, wherein the diameters of the first mounting hole (21) and the second mounting hole (31) are both D1, the first ball (42) and the The diameters of the second balls (52) are all D, where:

D1-D = 0.1 to 0.5 mm.
The pump body according to claim 6, characterized in that the openings of the first mounting hole (21) and the second mounting hole (31) are each provided with a rounded chamfer.
The pump body according to claim 6, characterized in that the minimum distance between the outer edge of the first mounting hole (21) and the inner ring and the outer circle of the bearing rotary cylinder (12) is not less than 0.02 mm, The minimum distance between the outer edge of the second mounting hole (31) and the inner ring and the outer circle of the bearing rotary cylinder (12) is not less than 0.02 mm.
A sliding vane compressor includes a pump body, wherein the pump body is the pump body according to any one of claims 1 to 13.