CN218953562U - Cylinder structure and rotor type compressor - Google Patents

Abstract

The utility model discloses a cylinder structure and a rotor type compressor, comprising an annular cylinder body, a first fan-shaped part and a second fan-shaped part; a cylinder cavity is arranged in the center of the annular cylinder body; the first fan-shaped part is arranged at one end of the outer circumferential surface of the annular cylinder body, and the second fan-shaped part is arranged at the other end of the outer circumferential surface of the annular cylinder body; the first fan-shaped part is provided with a first group of stress relief grooves, and the second fan-shaped part is provided with a second group of stress relief grooves; the first group of stress relief grooves and the second group of stress relief grooves are respectively arranged close to plug welding positions of the air cylinders; the plug welding position of the cylinder is the plug welding position between the first fan-shaped part or the second fan-shaped part and the compressor shell; the utility model utilizes the microscopic deformation of the stress release groove to release the welding stress generated in the plug welding process of the cylinder, achieves the purpose of stress balance, and avoids the microscopic deformation of the inner diameter of the annular cylinder body and the sliding vane groove under the action of the welding stress.

Description

Cylinder structure and rotor type compressor

Technical Field

The utility model belongs to the technical field of refrigeration compressors, and particularly relates to a cylinder structure and a rotor type compressor.

Background

The cylinder is used as a main structure of a rotor type compressor, a rotor in the compressor is sleeved on a crankshaft and arranged in a working cavity of the cylinder, and the rotor is driven by the crankshaft to rotate; the sliding vane is connected with the rotor to divide the working cavity of the cylinder into an air suction cavity and a compression cavity, so as to realize the compression of working media.

At present, the existing cylinder generally adopts a welded cylinder structure with a large upper cover and a welded round cylinder structure; the welded cylinder structure with the large upper cover has a fan-shaped cylinder or a grenade-shaped cylinder structure, and the welded cylinder structure with the large upper cover can reduce the deformation of the cylinder, but greatly increases the weight of the compressor and the manufacturing cost of the structure due to the large structural weight; the appearance structure of the welding round cylinder structure is a round cylinder or a fan-shaped cylinder structure, the welding round cylinder structure has welding stress, and the sliding vane groove in the cylinder structure is easy to deform or the inner diameter of the cylinder deforms, so that the phenomenon of cylinder clamping occurs, and the performance of the compressor is seriously influenced.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides a cylinder structure and a rotor type compressor, which are used for solving the technical problems that the weight and the manufacturing cost of the compressor are greatly increased due to the large structural weight of a welded cylinder structure with a large upper cover in the prior art, and the sliding vane groove in the cylinder structure is easy to deform or the inner diameter of the cylinder is easy to deform due to the existence of welding stress of the welded cylinder structure, so that the phenomenon of cylinder clamping occurs, and the performance of the compressor is seriously influenced.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a cylinder structure, which comprises an annular cylinder body, a first fan-shaped part and a second fan-shaped part, wherein the annular cylinder body is provided with a first air inlet and a second air inlet; a cylinder cavity is arranged in the center of the annular cylinder body; the first fan-shaped part is arranged at one end of the outer circumferential surface of the annular cylinder body, and the second fan-shaped part is arranged at the other end of the outer circumferential surface of the annular cylinder body;

the first fan-shaped part is provided with a first group of stress relief grooves, and the second fan-shaped part is provided with a second group of stress relief grooves; the first group of stress relief grooves and the second group of stress relief grooves are respectively arranged close to plug welding positions of the air cylinders; the cylinder plug welding position is a plug welding position between the first fan-shaped part or the second fan-shaped part and the compressor shell.

Further, the first group of stress release grooves comprises a first stress release groove and a second stress release groove, and the first stress release groove and the second stress release groove are respectively arranged on the upper end face and the lower end face of the first fan-shaped part; the first stress release groove and the second stress release groove are arc-shaped open grooves which are circumferentially and longitudinally arranged along the end face of the first fan-shaped part and are distributed in a staggered manner along the radial direction of the first fan-shaped part;

The second group of stress relief grooves comprises a fourth stress relief groove and a fifth stress relief groove, and the fourth stress relief groove and the fifth stress relief groove are respectively arranged on the upper end face and the lower end face of the second fan-shaped part; the fourth stress release groove and the fifth stress release groove are arc-shaped open grooves which are formed in the circumferential direction of the end face of the second fan-shaped part in a full-length mode, and are distributed in a staggered mode in the radial direction of the second fan-shaped part.

Further, the first set of stress relief grooves includes a first stress relief groove, a second stress relief groove, and a third stress relief groove; the first stress release groove is positioned on the outer circumferential surface of the first fan-shaped part and is radially arranged along the end surface of the first fan-shaped part; the second stress relief groove and the third stress relief groove are symmetrically arranged on the side walls of the two sides of the first fan-shaped part, and the second stress relief groove and the third stress relief groove are perpendicular to the radial direction of the end face of the first fan-shaped part;

the second set of stress relief grooves comprises a fourth stress relief groove and a fifth stress relief groove; the fourth stress relief groove is positioned on one side wall of the second fan-shaped part, the fifth stress relief groove is positioned on the other side wall of the second fan-shaped part, and the fourth stress relief groove and the fifth stress relief groove are perpendicular to the radial direction of the end surface of the second fan-shaped part;

Wherein the first stress relief groove, the second stress relief groove, the third stress relief groove, the fourth stress relief groove and the fifth stress relief groove are all straight groove structures; the upper end of the straight groove structure is communicated with the upper end face of the first fan-shaped part or the upper end face of the second fan-shaped part, and the lower end of the straight groove structure is communicated with the lower end face of the first fan-shaped part or the lower end face of the second fan-shaped part.

Further, the first group of stress release grooves comprises a first stress release groove and a second stress release groove, and the first stress release groove and the second stress release groove are arranged on the upper end surface of the first fan-shaped part at parallel intervals; the first stress release groove and the second stress release groove are arc-shaped open grooves which are circumferentially and longitudinally arranged along the end face of the first fan-shaped part;

the second group of stress relief grooves comprises a fourth stress relief groove and a fifth stress relief groove, and the fourth stress relief groove and the fifth stress relief groove are arranged on the upper end surface of the second fan-shaped part at parallel intervals; the fourth stress relief groove and the fifth stress relief groove are arc-shaped open grooves which are circumferentially and longitudinally arranged along the end face of the second fan-shaped part.

Further, the first set of stress relief grooves includes a first stress relief groove, a second stress relief groove, and a third stress relief groove; the first stress release groove is positioned on the upper end surface of the first fan-shaped part, is an arc-shaped open groove which is circumferentially and fully arranged along the end surface of the first fan-shaped part, and is arranged close to one side of the outer circumferential surface of the first fan-shaped part;

the second stress relief groove and the third stress relief groove are symmetrically arranged on the side walls of the two sides of the first fan-shaped part and are arranged close to one side of the outer circumferential surface of the annular cylinder body; the second stress relief groove and the third stress relief groove are perpendicular to the radial direction of the end face of the first fan-shaped part;

the second group of stress release grooves comprise a fourth stress release groove and a fifth stress release groove, the fourth stress release groove is positioned on the upper end face of the second fan-shaped part, and the fourth stress release groove is an arc-shaped open groove which is circumferentially and fully arranged along the end face of the second fan-shaped part and is arranged close to one side of the outer circumferential face of the second fan-shaped part; the fifth stress release groove is positioned on one side wall of the second fan-shaped part and is arranged close to one side of the outer circumferential surface of the annular cylinder body; the fifth stress relief groove is radially arranged perpendicular to the end face of the second fan-shaped part;

Wherein the second stress relief groove, the third stress relief groove and the fifth stress relief groove are all straight groove structures; the upper end of the straight groove structure is communicated with the upper end face of the first fan-shaped part or the upper end face of the second fan-shaped part, and the lower end of the straight groove structure is communicated with the lower end face of the first fan-shaped part or the lower end face of the second fan-shaped part.

Further, the first set of stress relief grooves includes a first stress relief groove, a second stress relief groove, and a third stress relief groove;

the first stress release groove is positioned on the upper end surface of the first fan-shaped part, is an arc-shaped open groove which is circumferentially and fully arranged along the end surface of the first fan-shaped part, and is arranged close to one side of the outer circumferential surface of the first fan-shaped part;

the second stress relief groove and the third stress relief groove are symmetrically arranged on the side walls of the two sides of the first fan-shaped part and are closely arranged on one side of the outer circumferential surface of the annular cylinder body; the second stress relief groove and the third stress relief groove are of slope groove structures; the opening end of the slope groove structure is communicated with the side wall surface of the first fan-shaped part, the upper end of the slope groove structure is communicated with the upper end surface of the first fan-shaped part, and the lower end of the slope groove structure is communicated with the lower end surface of the first fan-shaped part;

The second group of stress release grooves comprise a fourth stress release groove and a fifth stress release groove, the fourth stress release groove is positioned on the upper end face of the second fan-shaped part, and the fourth stress release groove is an arc-shaped open groove which is circumferentially and fully arranged along the end face of the second fan-shaped part and is arranged close to one side of the outer circumferential face of the second fan-shaped part; the fifth stress release groove is positioned on one side wall of the second fan-shaped part and is arranged close to one side of the outer circumferential surface of the annular cylinder body; the fifth stress relief groove is radially arranged perpendicular to the end face of the second fan-shaped part; wherein, the fifth stress release grooves are all straight groove structures; the upper end of the straight groove structure is communicated with the upper end face of the second fan-shaped part, and the lower end of the straight groove structure is communicated with the lower end face of the second fan-shaped part.

Further, a sliding vane groove is formed in the annular cylinder body; the sliding vane groove is arranged along the radial direction of the annular cylinder body, one end of the sliding vane groove penetrates through the inner circumferential surface of the annular cylinder body, and the other end of the sliding vane groove extends to the first fan-shaped part.

The utility model also provides a rotor type compressor, which comprises a shell and a cylinder; wherein, the cylinder is installed in the casing, the cylinder adopts a cylinder structure.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a cylinder structure and a rotor type compressor, wherein a sector part is arranged on the outer circumferential surface of an annular cylinder body, and a stress release groove is arranged on the sector part, so that the micro deformation of the stress release groove is utilized to release the welding stress generated in the plug welding process of the cylinder, the purpose of stress balance is achieved, and the micro deformation of the inner diameter of the annular cylinder body and the sliding vane groove under the action of the welding stress is avoided; meanwhile, the stress release groove is arranged, so that a large upper cover structure is not needed in the compressor core, and the weight and the manufacturing cost of the compressor structure are effectively reduced; simple structure and processing procedure, lower cost and can effectively ensure the performance of the compressor.

Drawings

Fig. 1 is a schematic plan view of the cylinder structure in embodiment 1;

FIG. 2 is a schematic view of section A-A of FIG. 1;

fig. 3 is a schematic plan view of the cylinder structure in embodiment 2;

fig. 4 is a schematic plan view of the cylinder structure in embodiment 3;

FIG. 5 is a schematic view in section B-B of FIG. 4;

fig. 6 is a schematic plan view of the cylinder structure in embodiment 4;

FIG. 7 is a schematic view in section C-C of FIG. 6;

Fig. 8 is a schematic plan view of the cylinder structure in embodiment 5;

fig. 9 is a schematic view of section D-D of fig. 8.

The device comprises a ring cylinder body 1, a first fan-shaped part 2, a second fan-shaped part 3, a sliding vane groove 4, a first stress release groove 201, a second stress release groove 202 and a third stress release groove 203; 301 fourth stress relief groove, 302 fifth stress relief groove.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the following specific embodiments are used for further describing the utility model in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Example 1

As shown in fig. 1-2, embodiment 1 provides a cylinder structure including an annular cylinder body 1, a first sector 2, and a second sector 3; the center of the annular cylinder body 1 is provided with a cylinder cavity which is used as a working cavity of a cylinder structure; the first fan-shaped part 2 and the second fan-shaped part 3 are arranged on the outer circumferential surface of the annular cylinder body 1; wherein the first fan-shaped part 2 is arranged at one end of the outer circumferential surface of the annular cylinder body 1, and the second fan-shaped part 3 is arranged at the other end of the outer circumferential surface of the annular cylinder body 1; the central axis of the first fan-shaped part 2 coincides with the central axis of the second fan-shaped part 3, and the central axes of the first fan-shaped part and the central axis of the second fan-shaped part coincide with the diameter of the annular cylinder body 1; the annular cylinder body 1 is provided with a sliding vane groove 4, the sliding vane groove 4 is arranged along the radial direction of the annular cylinder body 1, one end of the sliding vane groove 4 penetrates through the inner circumferential surface of the annular cylinder body 1, and the other end of the sliding vane groove 4 extends to the first fan-shaped part 2.

In this embodiment 1, the first sector 2 is provided with a first set of stress relief grooves, and the second sector 3 is provided with a second set of stress relief grooves; the first group of stress relief grooves and the second group of stress relief grooves are respectively arranged close to plug welding positions of the air cylinders; through set up first group's stress relief groove on first fan-shaped portion 2 to and set up the second group's stress relief groove on second fan-shaped portion 3, utilize the microscopic deformation of two groups of stress relief grooves, carry out effective release to the welding stress that produces in the cylinder plug welding process, avoided the microscopic deformation that the internal diameter of annular cylinder body 1 and gleitbretter groove 4 that sets up on it take place in the cylinder plug welding process, ensured the precision of cylinder structure, greatly reduced compressor's card jar fault rate improves the wholeness ability of compressor.

In this embodiment 1, the first set of stress relief grooves includes a first stress relief groove 201 and a second stress relief groove 202; the first stress relief groove 201 and the second stress relief groove 202 are provided on the upper and lower end surfaces of the first sector 2, respectively; the first stress relief groove 201 and the second stress relief groove 202 are arc-shaped open grooves which are all arranged along the circumferential direction of the end face of the first fan-shaped part 2, and are distributed in a staggered manner along the radial direction of the first fan-shaped part 2.

Specifically, the first stress releasing groove 201 is located on the upper end surface of the first fan-shaped portion 2, and is disposed near the outer circumferential surface side of the first fan-shaped portion 2; the opening end of the first stress release groove 201 is communicated with the upper end surface of the first fan-shaped part 2, and the groove bottom of the first stress release groove 201 extends along the axial direction of the first fan-shaped part 2 and towards the lower end surface of the first fan-shaped part 2; the cross section of the first stress release groove 201 is of an arc-shaped structure, and the groove bottom of the first stress release groove 201 is of an arc-shaped or non-arc-shaped structure.

The second stress relief groove 202 is located at the lower end surface of the first sector 2 and is disposed near the outer circumferential surface side of the annular cylinder 1; an opening end of the second stress release groove 202 is communicated with a lower end surface of the first fan-shaped part 2, and a groove bottom of the second stress release groove 202 extends along an axial direction of the first fan-shaped part 2 and towards an upper end surface direction of the first fan-shaped part 2; the cross section of the second stress relief groove 202 is an arc structure, and the groove bottom of the second stress relief groove 202 is an arc or non-arc structure.

The second group of stress relief grooves comprises a fourth stress relief groove 301 and a fifth stress relief groove 302, the fourth stress relief groove 301 and the fifth stress relief groove 302 are respectively arranged on the upper end face and the lower end face of the second fan-shaped part 3; the fourth stress relief groove 301 and the fifth stress relief groove 302 are arc-shaped open grooves which are circumferentially and longitudinally arranged on the end surface of the second fan-shaped portion 3, and are distributed in a staggered manner along the radial direction of the second fan-shaped portion 3.

Specifically, the fourth stress relief groove 301 is located on the upper end surface of the second sector 3 and is disposed near the outer circumferential surface side of the second sector 3; an opening end of the fourth stress relief groove 301 is communicated with an upper end surface of the second fan-shaped part 3, and a groove bottom of the fourth stress relief groove 301 extends along an axial direction of the second fan-shaped part 3 and towards a lower end surface direction of the second fan-shaped part 3; the cross section of the fourth stress releasing groove 301 is an arc structure, and the groove bottom of the fourth stress releasing groove 301 is an arc or non-arc structure.

The fifth stress relief groove 302 is located at the lower end surface of the second sector 3 and is disposed near the outer circumferential surface side of the annular cylinder 1; an opening end of the fifth stress release groove 302 is communicated with a lower end face of the second fan-shaped part 3, and a groove bottom of the fifth stress release groove 302 extends along an axial direction of the second fan-shaped part 3 and towards an upper end face direction of the second fan-shaped part 3; the cross section of the fifth stress relief groove 302 is an arc groove structure, and the groove bottom of the fifth stress relief groove 302 is an arc or non-arc structure.

According to the cylinder structure disclosed in embodiment 1, by arranging a first group of stress relief grooves on a first fan-shaped part and a second group of stress relief grooves on a second fan-shaped part, and arranging the two groups of stress relief grooves close to the stress relief grooves at the plug welding position of the cylinder, microscopic deformation of the inner diameter of the annular cylinder body and the sliding vane groove caused by plug welding of the cylinder is reduced or eliminated; in this embodiment 1, need not to adjust the original blank structure of cylinder structure, under the prerequisite that does not increase cylinder structure blank mould, only increase the processing stress relief groove point process in cylinder structure course working, simple structure, processing is convenient, avoids producing extra influence to the course of working of cylinder finishing process, greatly reduced cylinder structure's manufacturing cost.

In the embodiment 1, the stress release groove is additionally arranged on the fan-shaped part, so that the compressor movement does not use a cast large upper cover structure, and a welded large upper cover is not needed, thereby reducing the structural cost, the material cost and the manufacturing cost of the compressor; because of the existence of the stress release groove, the inner diameter of the cylinder and the sliding vane groove which are generated in the welding process of the cylinder disappear or are reduced, the gap of the initial assembly process of the compressor core is hardly changed in the hot assembly process, the failure rate of the clamping cylinder of the compressor can be greatly reduced, and the performance of the whole machine can be improved.

Example 2

As shown in fig. 3, the present embodiment 2 provides a cylinder structure; the cylinder structure described in this embodiment 2 is basically the same as the specific structure and design principle of the cylinder structure described in embodiment 1, except that:

in embodiment 2, the first set of stress relief grooves includes a first stress relief groove 201, a second stress relief groove 202, and a third stress relief groove 203; the first stress relief groove 201 is located on the outer circumferential surface of the first sector 2, and the second stress relief groove 202 and the third stress relief groove 203 are symmetrically disposed on both side walls of the first sector 2.

The first stress release groove 201 is radially arranged along the end surface of the first fan-shaped part 2, the opening end of the first stress release groove 201 is communicated with the outer circumferential surface of the first fan-shaped part 2, and the groove bottom of the first stress release groove 201 extends along the radial direction of the first fan-shaped part 2 and towards the center direction of the first fan-shaped part 2; the upper end of the first stress release groove 201 is communicated with the upper end face of the first fan-shaped part 2, and the lower end of the first stress release groove 201 is communicated with the lower end face of the first fan-shaped part 2; the cross section of the first stress release groove 201 is in a rectangular structure, and the groove bottom of the first stress release groove 201 is in an arc structure or a non-arc structure.

The second stress relief groove 202 is a straight groove structure and is perpendicular to the radial direction of the end surface of the second fan-shaped part 3; wherein, the opening end of the second stress releasing groove 202 is communicated with a side wall surface of the first fan-shaped part 2, and the groove bottom of the first stress releasing groove 202 is vertical to the radial direction of the end part of the first fan-shaped part 2 and extends towards the central axis direction of the first fan-shaped part 2; the upper end of the second stress relief groove 202 is communicated with the upper end face of the first fan-shaped part 2, and the lower end of the second stress relief groove 202 is communicated with the lower end face of the first fan-shaped part 2; the cross section of the second stress relief groove 202 is a rectangular structure, and the groove bottom of the second stress relief groove 202 is a circular arc structure or a non-circular arc structure.

The third stress relief groove 203 is a straight groove structure and is perpendicular to the radial direction of the end surface of the second fan-shaped part 3; wherein, the opening end of the third stress release groove 203 is communicated with the other side wall surface of the first fan-shaped part 2, and the groove bottom of the third stress release groove 203 is vertical to the radial direction of the end part of the first fan-shaped part 2 and extends towards the central axis direction of the first fan-shaped part 2; the upper end of the third stress release groove 203 is communicated with the upper end surface of the first fan-shaped part 2, and the lower end of the third stress release groove 203 is communicated with the lower end surface of the first fan-shaped part 2; the cross section of the third stress release groove 203 is a rectangular structure, and the bottom of the third stress release groove 203 is a circular arc structure or a non-circular arc structure.

In this embodiment 2, the second set of stress relief grooves includes a fourth stress relief groove 301 and a fifth stress relief groove 302, and the fourth stress relief groove 301 and the fifth stress relief groove 302 are both straight groove structures; the fourth stress relief groove 301 is located on a side wall of the second sector 3 and is perpendicular to the radial direction of the end face of the second sector 3; the fifth stress relief groove 302 is located on the other side wall of the second sector 3 and is perpendicular to the radial direction of the end face of the second sector 3.

Specifically, the cross section of the fourth stress relief groove 301 is a rectangular structure, and the groove bottom of the fourth stress relief groove 301 is a circular arc structure or a non-circular arc structure; the opening end of the fourth stress releasing groove 301 is communicated with a side wall surface of the second sector portion 3, the groove bottom of the fourth stress releasing groove 301 is perpendicular to the radial direction of the end portion of the second sector portion 3, extends towards the central axis direction of the second sector portion 3, and is arranged close to one end of the outer arc surface of the second sector portion 3; the upper end of the fourth stress relief groove 301 is connected to the upper end surface of the second sector 3, and the lower end of the fourth stress relief groove 301 is connected to the lower end surface of the second sector 3.

Specifically, the cross section of the fifth stress relief groove 302 is a rectangular structure, and the groove bottom of the fifth stress relief groove 302 is a circular arc structure or a non-circular arc structure; the opening end of the fifth stress releasing groove 302 is communicated with the other side wall surface of the second fan-shaped part 3, the groove bottom of the fifth stress releasing groove 302 is vertical to the radial direction of the end part of the second fan-shaped part 3, extends towards the central axis direction of the second fan-shaped part 3, and is arranged close to one end of the inner arc surface of the second fan-shaped part 3; the upper end of the fifth stress relief groove 302 is connected to the upper end surface of the second sector 3, and the lower end of the fifth stress relief groove 302 is connected to the lower end surface of the second sector 3.

Example 3

As shown in fig. 4 to 5, embodiment 3 provides a cylinder structure; the cylinder structure described in this embodiment 3 is basically the same as the specific structure and design principle of the cylinder structure described in embodiment 1, except that:

in this embodiment 3, the first set of stress relief grooves includes a first stress relief groove 201 and a second stress relief groove 202, where the first stress relief groove 201 and the second stress relief groove 202 are disposed on the upper end surface of the first sector 2 at parallel intervals; the first stress relief groove 201 and the second stress relief groove 202 are arc-shaped open grooves provided along the circumferential direction of the end face of the first fan-shaped portion 2.

Specifically, the cross sections of the first stress release groove 201 and the second stress release groove 202 are arc groove structures, and the bottoms of the first stress release groove 201 and the second stress release groove 202 are arc or non-arc structures respectively; the first stress relief groove 201 and the second stress relief groove 202 are both provided on the upper end face of the first sector 2; the first stress relief groove 201 and the second stress relief groove 202 are arranged at intervals in parallel, the first stress relief groove 201 is arranged near the outer circumferential surface side of the first fan-shaped part 2, and the second stress relief groove 202 is arranged near the outer circumferential surface side of the annular cylinder body 1; the first stress release groove 201 and the opening end of the second stress release groove 201 are arranged in the same direction, i.e. are communicated with the upper end surface of the first fan-shaped part 2; the groove bottom of the first stress release groove 201 extends along the axial direction of the first fan-shaped part 2 and towards the lower end surface direction of the first fan-shaped part 2; the groove bottom of the second stress relief groove 202 extends in the axial direction of the first sector 2 and in the direction of the lower end face of the first sector 2.

In this embodiment 3, the second set of stress relief grooves includes a fourth stress relief groove 301 and a fifth stress relief groove 302, and the fourth stress relief groove 301 and the fifth stress relief groove 302 are disposed on the upper end surface of the second sector portion 3 at parallel intervals; the fourth stress relief groove 301 and the fifth stress relief groove 302 are arc-shaped open grooves that are all provided along the axial direction of the end face of the second sector 3.

Specifically, the cross sections of the fourth stress relief groove 301 and the fifth stress relief groove 302 are arc groove structures, and the bottoms of the fourth stress relief groove 301 and the fifth stress relief groove 302 are arc or non-arc structures respectively; the fourth stress relief groove 301 is located on the upper end surface of the second sector 3 and is disposed near the outer circumferential surface side of the second sector 3; an opening end of the fourth stress relief groove 301 is communicated with an upper end surface of the second fan-shaped part 3, and a groove bottom of the fourth stress relief groove 301 extends along an axial direction of the second fan-shaped part 3 and towards a lower end surface direction of the second fan-shaped part 3; the fifth stress relief groove 302 is located on the upper end surface of the second sector 3 and is disposed near the outer circumferential surface side of the annular cylinder 1; the opening end of the fifth stress relief groove 302 is communicated with the upper end face of the second fan-shaped part 3, and the groove bottom of the fifth stress relief groove 302 extends along the axial direction of the second fan-shaped part 3 and towards the lower end face of the second fan-shaped part 3.

Example 4

As shown in fig. 6 to 7, embodiment 4 provides a cylinder structure; the cylinder structure described in this embodiment 4 is basically the same as the specific structure and design principle of the cylinder structure described in embodiment 2, except that:

In embodiment 4, the first set of stress relief grooves includes a first stress relief groove 201, a second stress relief groove 202, and a third stress relief groove 203; the first stress release groove 201 is located on the upper end surface of the first fan-shaped part 2, and the first stress release groove 201 is an arc-shaped open groove which is circumferentially and fully arranged along the end surface of the first fan-shaped part 2 and is arranged close to one side of the outer circumferential surface of the first fan-shaped part 2; the cross section of the first stress release groove 201 is of an arc-shaped structure, and the groove bottom of the first stress release groove 201 is of a circular arc or non-circular arc-shaped structure; the opening end of the first stress releasing groove 201 is communicated with the upper end face of the first fan-shaped part 2, and the groove bottom of the first stress releasing groove 201 extends along the axial direction of the first fan-shaped part 2 and towards the lower end face of the first fan-shaped part 2.

The second stress relief groove 202 and the third stress relief groove 203 are symmetrically arranged on the side walls of the two sides of the first fan-shaped part 2 and are arranged near one side of the outer circumference surface of the annular cylinder body 1; the second stress relief groove 202 and the third stress relief groove 203 are each perpendicular to the radial direction of the end face of the first sector 2.

Specifically, the second stress relief groove 202 has a straight groove structure and is perpendicular to the radial direction of the end surface of the second fan-shaped portion 3; wherein, the opening end of the second stress releasing groove 202 is communicated with a side wall surface of the first fan-shaped part 2, and the groove bottom of the first stress releasing groove 202 is vertical to the radial direction of the end part of the first fan-shaped part 2 and extends towards the central axis direction of the first fan-shaped part 2; the upper end of the second stress relief groove 202 is communicated with the upper end face of the first fan-shaped part 2, and the lower end of the second stress relief groove 202 is communicated with the lower end face of the first fan-shaped part 2; the cross section of the second stress relief groove 202 is a rectangular structure, and the groove bottom of the second stress relief groove 202 is a circular arc structure or a non-circular arc structure.

The third stress relief groove 203 is a straight groove structure and is perpendicular to the radial direction of the end surface of the second fan-shaped part 3; wherein, the opening end of the third stress release groove 203 is communicated with the other side wall surface of the first fan-shaped part 2, and the groove bottom of the third stress release groove 203 is vertical to the radial direction of the end part of the first fan-shaped part 2 and extends towards the central axis direction of the first fan-shaped part 2; the upper end of the third stress release groove 203 is communicated with the upper end surface of the first fan-shaped part 2, and the lower end of the third stress release groove 203 is communicated with the lower end surface of the first fan-shaped part 2; the cross section of the third stress release groove 203 is a rectangular structure, and the bottom of the third stress release groove 203 is a circular arc structure or a non-circular arc structure.

In this embodiment 4, the second set of stress relief grooves includes a fourth stress relief groove 301 and a fifth stress relief groove 302, where the fourth stress relief groove 301 is located on the upper end surface of the second sector 3, and the fourth stress relief groove 301 is an arc-shaped open groove that is circumferentially and longitudinally disposed along the end surface of the second sector 3 and is disposed near one side of the outer circumferential surface of the second sector 3; the fifth stress relief groove 302 is located on one side wall of the second sector 3 and is disposed near one side of the outer circumferential surface of the annular cylinder 1; the fifth stress relief groove 302 is arranged radially perpendicularly to the end face of the second sector 3.

Specifically, the fourth stress relief groove 301 is located on the upper end surface of the second sector 3 and is disposed near the outer circumferential surface side of the second sector 3; an opening end of the fourth stress relief groove 301 is communicated with an upper end surface of the second fan-shaped part 3, and a groove bottom of the fourth stress relief groove 301 extends along an axial direction of the second fan-shaped part 3 and towards a lower end surface direction of the second fan-shaped part 3; the cross section of the fourth stress relief groove 301 is an arc groove structure, and the groove bottom of the fourth stress relief groove 301 is an arc or non-arc structure.

The fifth stress release grooves 302 are all straight groove structures, and the fifth stress release grooves 302 are located on one side wall of the second fan-shaped portion 3, are perpendicular to the radial direction of the end surface of the second fan-shaped portion 3, and are arranged close to one side of the inner arc surface of the second fan-shaped portion 3; the cross section of the fifth stress release groove 302 is a rectangular structure, and the groove bottom of the fifth stress release groove 302 is a circular arc structure or a non-circular arc structure; an opening end of the fifth stress relief groove 302 is communicated with a side wall surface of the second fan-shaped part 3, and a groove bottom of the fifth stress relief groove 302 is perpendicular to the radial direction of the end part of the second fan-shaped part 3 and extends towards the central axis direction of the second fan-shaped part 3; the upper end of the fifth stress relief groove 302 is connected to the upper end surface of the second sector 3, and the lower end of the fifth stress relief groove 302 is connected to the lower end surface of the second sector 3.

Example 5

As shown in fig. 8 to 9, embodiment 5 provides a cylinder structure; the cylinder structure described in this embodiment 5 is basically the same as the specific structure and design principle of the cylinder structure described in embodiment 4, except that:

in embodiment 5, the first set of stress relief grooves includes a first stress relief groove 201, a second stress relief groove 202, and a third stress relief groove 203; the first stress release groove 201 is located on the upper end surface of the first fan-shaped part 2, and the first stress release groove 201 is an arc-shaped open groove which is circumferentially and fully arranged along the end surface of the first fan-shaped part 2 and is arranged close to one side of the outer circumferential surface of the first fan-shaped part 2; the second stress relief groove 202 and the third stress relief groove 203 are symmetrically disposed on both side walls of the first sector 2 and are disposed closely to one side of the outer circumferential surface of the annular cylinder 1.

Specifically, the first stress releasing groove 201 is located on the upper end surface of the first fan-shaped portion 2, and is disposed near the outer circumferential surface side of the first fan-shaped portion 2; the opening end of the first stress release groove 201 is communicated with the upper end surface of the first fan-shaped part 2, and the groove bottom of the first stress release groove 201 extends along the axial direction of the first fan-shaped part 2 and towards the lower end surface of the first fan-shaped part 2; the cross section of the first stress release groove 201 is of an arc-shaped structure, and the groove bottom of the first stress release groove 201 is of an arc-shaped or non-arc-shaped structure.

The second stress relief groove 202 is a slope groove structure and is located on one side wall of the first fan-shaped part 2; an opening end of the second stress release groove 202 is communicated with a side wall surface of the first fan-shaped part 2, and a groove bottom of the first stress release groove 202 extends towards a central axis direction of the first fan-shaped part 2; the upper end of the second stress relief groove 202 is communicated with the upper end face of the first fan-shaped part 2, and the lower end of the second stress relief groove 202 is communicated with the lower end face of the first fan-shaped part 2; the cross section of the second stress relief groove 202 is a slope structure, and the groove bottom of the second stress relief groove 202 is a circular arc structure.

The third stress relief groove 203 is of a slope groove structure and is positioned on the other side wall of the first fan-shaped part 2; an opening end of the third stress relief groove 203 is communicated with the other side wall surface of the first fan-shaped part 2, and a groove bottom of the third stress relief groove 203 extends towards the central axis direction of the first fan-shaped part 2; the upper end of the third stress release groove 203 is communicated with the upper end surface of the first fan-shaped part 2, and the lower end of the third stress release groove 203 is communicated with the lower end surface of the first fan-shaped part 2; the cross section of the third stress release groove 203 is a slope structure, and the bottom of the third stress release groove 203 is a circular arc structure.

The second set of stress relief grooves in this embodiment 5 is identical to the second set of stress relief grooves in embodiment 4, and will not be described here.

Example 6

In this embodiment 6, there is provided a rotor type compressor including a housing and a cylinder installed in the housing; the rotor in the rotor type compressor is sleeved on the crankshaft, is arranged in the working cavity of the air cylinder and rotates under the drive of the crankshaft; the sliding vane is connected with the rotor to divide the working cavity of the cylinder into an air suction cavity and a compression cavity; wherein, the cylinder adopts the cylinder structure in above-mentioned embodiment 1-5.

Working principle:

after the cylinder is subjected to three-point plug welding, a plug welding spot generates pressure, namely welding stress, on the outer diameter welding part of the cylinder; the release of the welding stress acts on the sliding vane groove and the cylinder inner diameter through the force transmission, and microscopic deformation occurs in the sliding vane groove and the cylinder inner diameter, so that the stress is released, and the balance of the force is achieved; in the utility model, a group of stress release grooves are respectively arranged on the first fan-shaped part and the second fan-shaped part, after the stress release grooves are additionally arranged, the stress generated at the plug welding spot part is released through the micro deformation of the stress release grooves before reaching the sliding vane groove and the cylinder inner diameter, so that the balance of forces is achieved, and the aim of protecting the sliding vane groove of the cylinder and the cylinder inner diameter from the micro deformation caused by the stress is fulfilled.

In the utility model, the shape of the cylinder structure is a sector, a circle or a multi-petal shape; the cylinder structure is internally provided with a hole system and a groove system structure inherent to the traditional cylinder; the stress release groove is formed in a non-matching surface of the cylinder structure, the stress release groove is an arc groove or a straight groove, the groove width of the stress release groove is determined according to the process of the compressor, and the groove depth is determined according to the position of a welding point; the stress release grooves added on the upper end surface and the lower end surface of the annular cylinder body are distributed in a single groove or multiple grooves in a radial dislocation manner; stress release grooves are additionally arranged on the upper end face and the lower end face of the air cylinder, and the opening directions are axially opposite or same, or the vertical end faces are radially or circumferentially opened; the stress relief grooves added on the upper end surface and the lower end surface of the air cylinder can be in a communicating state or in a non-communicating state; the opening pattern of the stress relief groove is not limited, and the stress relief groove can be in a casting state or a processing state; the cross section of the groove can be in a straight groove state or a slope groove or an arc state; the groove bottom structure of the stress release groove is in an arc or non-arc state.

According to the cylinder structure, the fan-shaped parts are respectively arranged at the two ends of the outer circumferential surface of the annular cylinder body, and the group of stress release grooves are formed in the fan-shaped parts, so that deformation of the sliding vane groove and the cylinder inner diameter caused by welding of the cylinder by the compressor is eliminated, the performance reduction and cylinder clamping off-line in the production process of the compressor caused by deformation of the welding cylinder are eliminated while the structure cost of the compressor core is reduced, and the energy efficiency of the compressor is improved; meanwhile, the core structure cost of the compressor is effectively reduced, the production manufacturability of the compressor is improved, the operation reliability is improved, and the rotor type compressor is suitable for rotor compressors with various structures.

The above embodiment is only one of the implementation manners capable of implementing the technical solution of the present utility model, and the scope of the claimed utility model is not limited to the embodiment, but also includes any changes, substitutions and other implementation manners easily recognized by those skilled in the art within the technical scope of the present utility model.

Claims (8)

1. The cylinder structure is characterized by comprising an annular cylinder body (1), a first fan-shaped part (2) and a second fan-shaped part (3); a cylinder cavity is arranged in the center of the annular cylinder body (1); the first fan-shaped part (2) is arranged at one end of the outer circumferential surface of the annular cylinder body (1), and the second fan-shaped part (3) is arranged at the other end of the outer circumferential surface of the annular cylinder body (1);

A first group of stress relief grooves are formed in the first fan-shaped part (2), and a second group of stress relief grooves are formed in the second fan-shaped part (3); the first group of stress relief grooves and the second group of stress relief grooves are respectively arranged close to plug welding positions of the air cylinders; the cylinder plug welding position is a plug welding position between the first fan-shaped part (2) or the second fan-shaped part (3) and the compressor shell.

2. The cylinder structure according to claim 1, wherein the first set of stress relief grooves includes a first stress relief groove (201) and a second stress relief groove (202), the first stress relief groove (201) and the second stress relief groove (202) being provided on upper and lower end surfaces of the first sector (2), respectively; the first stress release groove (201) and the second stress release groove (202) are arc-shaped open grooves which are circumferentially and longitudinally arranged along the end face of the first fan-shaped part (2) and are distributed in a staggered manner along the radial direction of the first fan-shaped part (2);

the second group of stress relief grooves comprises a fourth stress relief groove (301) and a fifth stress relief groove (302), and the fourth stress relief groove (301) and the fifth stress relief groove (302) are respectively arranged on the upper end face and the lower end face of the second fan-shaped part (3); the fourth stress relief groove (301) and the fifth stress relief groove (302) are arc-shaped open grooves which are formed in a circumferential and through manner along the end face of the second fan-shaped part (3), and are distributed in a staggered manner along the radial direction of the second fan-shaped part (3).

3. The cylinder structure according to claim 1, wherein the first set of stress relief grooves comprises a first stress relief groove (201), a second stress relief groove (202) and a third stress relief groove (203); the first stress release groove (201) is positioned on the outer circumferential surface of the first fan-shaped part (2) and is radially arranged along the end surface of the first fan-shaped part (2); the second stress relief groove (202) and the third stress relief groove (203) are symmetrically arranged on two side walls of the first fan-shaped part (2), and the second stress relief groove (202) and the third stress relief groove (203) are perpendicular to the radial direction of the end face of the first fan-shaped part (2);

the second set of stress relief grooves comprises a fourth stress relief groove (301) and a fifth stress relief groove (302); the fourth stress relief groove (301) is positioned on one side wall of the second sector part (3), the fifth stress relief groove (302) is positioned on the other side wall of the second sector part (3), and the fourth stress relief groove (301) and the fifth stress relief groove (302) are perpendicular to the radial direction of the end surface of the second sector part (3);

wherein the first stress relief groove (201), the second stress relief groove (202), the third stress relief groove (203), the fourth stress relief groove (301) and the fifth stress relief groove (302) are all straight groove structures; the upper end of the straight groove structure is communicated with the upper end face of the first fan-shaped part (2) or the second fan-shaped part (3), and the lower end of the straight groove structure is communicated with the lower end face of the first fan-shaped part (2) or the second fan-shaped part (3).

4. A cylinder structure according to claim 1, characterized in that the first set of stress relief grooves comprises a first stress relief groove (201) and a second stress relief groove (202), the first stress relief groove (201) and the second stress relief groove (202) being arranged in parallel spaced apart relationship on the upper end face of the first sector (2); the first stress relief groove (201) and the second stress relief groove (202) are arc-shaped open grooves which are all arranged along the circumferential direction of the end face of the first fan-shaped part (2) in a full length mode;

the second group of stress relief grooves comprises a fourth stress relief groove (301) and a fifth stress relief groove (302), and the fourth stress relief groove (301) and the fifth stress relief groove (302) are arranged on the upper end surface of the second fan-shaped part (3) at parallel intervals; the fourth stress relief groove (301) and the fifth stress relief groove (302) are arc-shaped open grooves which are all arranged along the circumferential direction of the end face of the second fan-shaped part (3).

5. The cylinder structure according to claim 1, wherein the first set of stress relief grooves comprises a first stress relief groove (201), a second stress relief groove (202) and a third stress relief groove (203); the first stress release groove (201) is positioned on the upper end surface of the first fan-shaped part (2), and the first stress release groove (201) is an arc-shaped open groove which is circumferentially and longitudinally arranged along the end surface of the first fan-shaped part (2) and is arranged close to one side of the outer circumferential surface of the first fan-shaped part (2);

The second stress relief groove (202) and the third stress relief groove (203) are symmetrically arranged on the side walls of the two sides of the first fan-shaped part (2) and are arranged close to one side of the outer circumferential surface of the annular cylinder body (1); the second stress relief groove (202) and the third stress relief groove (203) are perpendicular to the radial direction of the end face of the first fan-shaped part (2);

the second group of stress release grooves comprises a fourth stress release groove (301) and a fifth stress release groove (302), the fourth stress release groove (301) is positioned on the upper end face of the second fan-shaped part (3), and the fourth stress release groove (301) is an arc-shaped open groove which is circumferentially and fully arranged along the end face of the second fan-shaped part (3) and is arranged close to one side of the outer circumferential face of the second fan-shaped part (3); the fifth stress relief groove (302) is positioned on one side wall of the second fan-shaped part (3) and is arranged close to one side of the outer circumferential surface of the annular cylinder body (1); the fifth stress relief groove (302) is radially arranged perpendicular to the end face of the second sector (3);

wherein the second stress relief groove (202), the third stress relief groove (203) and the fifth stress relief groove (302) are all straight groove structures; the upper end of the straight groove structure is communicated with the upper end face of the first fan-shaped part (2) or the second fan-shaped part (3), and the lower end of the straight groove structure is communicated with the lower end face of the first fan-shaped part (2) or the second fan-shaped part (3).

6. The cylinder structure according to claim 1, wherein the first set of stress relief grooves comprises a first stress relief groove (201), a second stress relief groove (202) and a third stress relief groove (203);

the first stress release groove (201) is positioned on the upper end surface of the first fan-shaped part (2), and the first stress release groove (201) is an arc-shaped open groove which is circumferentially and longitudinally arranged along the end surface of the first fan-shaped part (2) and is arranged close to one side of the outer circumferential surface of the first fan-shaped part (2);

the second stress relief groove (202) and the third stress relief groove (203) are symmetrically arranged on the side walls of the two sides of the first fan-shaped part (2) and are closely arranged on one side of the outer circumferential surface of the annular cylinder body (1); the second stress relief groove (202) and the third stress relief groove (203) are of a slope groove structure; the opening end of the slotter structure is communicated with the side wall surface of the first fan-shaped part (2), the upper end of the slotter structure is communicated with the upper end surface of the first fan-shaped part (2), and the lower end of the slotter structure is communicated with the lower end surface of the first fan-shaped part (2);

the second group of stress release grooves comprises a fourth stress release groove (301) and a fifth stress release groove (302), the fourth stress release groove (301) is positioned on the upper end face of the second fan-shaped part (3), and the fourth stress release groove (301) is an arc-shaped open groove which is circumferentially and fully arranged along the end face of the second fan-shaped part (3) and is arranged close to one side of the outer circumferential face of the second fan-shaped part (3); the fifth stress relief groove (302) is positioned on one side wall of the second fan-shaped part (3) and is arranged close to one side of the outer circumferential surface of the annular cylinder body (1); the fifth stress relief groove (302) is radially arranged perpendicular to the end face of the second sector (3); wherein the fifth stress relief grooves (302) are all straight groove structures; the upper end of the straight groove structure is communicated with the upper end face of the second fan-shaped part (3), and the lower end of the straight groove structure is communicated with the lower end face of the second fan-shaped part (3).

7. A cylinder structure according to claim 1, characterized in that the annular cylinder body (1) is provided with a slide groove (4); the sliding vane groove (4) is arranged along the radial direction of the annular cylinder body (1), one end of the sliding vane groove (4) penetrates through the inner circumferential surface of the annular cylinder body (1), and the other end of the sliding vane groove (4) extends to the first fan-shaped part (2).

8. A rotor compressor comprising a housing, characterized by further comprising a cylinder; wherein the cylinder is mounted in the housing, the cylinder adopting a cylinder structure as claimed in any one of claims 1-7.

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