Adjusting structure for controlling axial clearance in compressor

Abstract

The invention relates to the field of air conditioner compressors, in particular to an adjusting structure for controlling an axial gap in a compressor, which comprises a rotor core and a stator core, the stator core wraps the rotor core, cover plates are arranged on the upper side and the lower side of the rotor core, and frameworks are arranged on the upper side and the lower side of the stator core. The stator iron core, the movable disc, the static disc and the disc chuck are all installed in the shell, the movable disc is installed in the static disc, the disc chuck is connected with the static disc, an installation groove is formed in the shell, one end of the rotating main shaft is connected in the disc chuck in a penetrating mode, the other end of the rotating main shaft is installed in the installation groove, and the movable disc is installed in the installation groove. And an elastic device is arranged on the outer circumferential surface of one side, close to the mounting groove, of the rotating main shaft, so that the problems that the structure is complicated at the present stage, and leakage in the compressor is caused as the movable disc is separated from the molded line end surface of the static disc due to reactive force in a compression cavity in the high-speed operation process of the compressor cannot be solved are solved.

Description

Technical Field

[0001] The invention relates to the field of air-conditioning compressors, and in particular to a structure for controlling an internal axial clearance adjustment of a compressor. Background Art

[0003] The current compressor structure usually adopts a back pressure mechanism designed on the stator plate, and the middle support plate has an end face difference to meet the axial adjustment or a sealing structure is set in the middle support plate, and a small back pressure groove is set on the end face to relieve pressure to maintain a small back pressure on the back of the moving part. However, the structure is relatively complicated and cannot solve the problem that the reaction force in the compression chamber during high-speed operation of the compressor causes the moving plate to separate from the end face of the stator plate profile, resulting in leakage in the compressor.

[0004] At present, a structure for controlling the internal axial clearance adjustment of a compressor is proposed to solve the problems raised in the above background technology. Summary of the invention

[0005] The purpose of the present invention is to provide a structure for controlling the internal axial clearance of a compressor to solve the problem that the current structure is complex and cannot solve the problem that the reaction force in the compression chamber during high-speed operation of the compressor causes the moving disk to separate from the end surface of the static disk profile, resulting in leakage in the compressor.

[0006] A structure for controlling the internal axial clearance adjustment of a compressor comprises a rotor core and a stator core, wherein the stator core covers the rotor core, cover plates are provided on the upper and lower sides of the rotor core, frames are provided on the upper and lower sides of the stator core, frame protection sleeves are provided on the outside of the frames, and a rotating main shaft, a moving plate, a stationary plate and a faceplate are provided. The stator core, the moving plate, the stationary plate and the faceplate are all installed in a shell, the moving plate is installed in the stationary plate, the faceplate is connected to the stationary plate, an installation groove is provided in the shell, one end of the rotating main shaft is connected to the faceplate, and the other end is installed in the installation groove, and an elastic device is provided on the outer circumferential surface of the rotating main shaft close to the installation groove.

[0007] It is further defined that a shell bearing is arranged in the installation groove, the rotating main shaft is divided into an axis body, a first axis head and a second axis head, the first axis head is inserted into the shell bearing, the outer diameter of the first axis head is smaller than the outer diameter of the axis body, and forms a step shape with the axis body, an elastic device is arranged between the junction of the first axis head and the axis body and the installation groove, and the elastic device is a butterfly spring, which is sleeved on the first axis head.

[0008] It is further defined that the outside of the face disc is connected to the static disc through a positioning pin and fixed on the shell, the moving disc is provided with an anti-rotation ring and an anti-rotation pin, the moving disc is installed on the face disc through the anti-rotation ring and the anti-rotation pin, the face disc is provided with a face disc bearing and an eccentric wheel inside, the eccentric wheel is in a "convex" shape, the protrusion is installed in the moving disc, the face disc bearing is located below the eccentric wheel, and the second shaft head is connected to the face disc bearing.

[0009] It is further defined that a thrust plate is provided between the moving plate and the faceplate, an upper cover is detachably provided on the upper portion of the shell, and sealing strips are installed in both the moving plate and the static plate.

[0010] It is further defined that an oil seal is provided at the connection between the faceplate and the rotating main shaft, the oil seal is located inside the faceplate, and an elastic retaining ring is provided above the oil seal.

[0011] The beneficial effects of the present invention compared to the current technology are: 1. The structure of the present invention is relatively simple, easy to assemble and adjust, and an elastic device is provided to offset the reaction force of the high-pressure chamber and apply an elastic preload.

[0012] 2. It prevents the reaction force in the compression chamber from causing the moving disk to separate from the end surface of the static disk during high-speed operation of the compressor, resulting in leakage in the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of the present invention; Figure 2 It is a top view schematic diagram of the present invention; Figure 3 for Figure 2 CC section view in the figure; Figure 4 It is a three-dimensional schematic diagram of the rotating main shaft.

[0014] The markings in the figure correspond to: 1-rotor core, 2-stator core, 3-cover plate, 4-skeleton, 5-skeleton protection cover, 6-rotating main shaft, 61-shaft body, 62-first shaft head, 63-second shaft head, 7-moving disk, 8-static disk, 9-face disk, 10-housing, 11-anti-rotation ring, 12-anti-rotation pin, 13-face disk bearing, 14-eccentric wheel, 15-mounting groove, 16-housing bearing, 17-elastic device, 18-upper cover, 19-sealing strip, 20-oil seal, 21-elastic retaining ring. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments. Embodiment

[0016] As shown Figures 1-4 in the figure, a control structure for adjusting the internal axial clearance of a compressor includes a rotor core 1 and a stator core 2. The stator core 2 wraps the rotor core 1. Cover plates 3 are arranged on both the upper and lower sides of the rotor core 1. Skeletons 4 are arranged on both the upper and lower sides of the stator core 2. Skeleton protective sleeves 5 are arranged outside the skeletons. It also includes a rotating main shaft 6, a moving disk 7, a static disk 8, and a flower disk 9. The rotating main shaft 6, the moving disk 7, the static disk 8, and the flower disk 9 are all installed in a housing 10. The moving disk 7 is installed in the static disk 8. An anti-rotation ring and anti-rotation pins are arranged inside the moving disk 7. The moving disk 7 is installed on the flower disk 9 through the anti-rotation ring 11 and the anti-rotation pins 12. The outside of the flower disk 9 is connected to the static disk 8 through positioning pins and fixed on the housing 10. A flower disk bearing 13 and an eccentric wheel 14 are arranged inside the flower disk 9. The eccentric wheel 14 is in a "convex" shape, and the protruding part is installed inside the moving disk 7. The flower disk bearing 13 is located below the eccentric wheel 14. An installation groove 15 is arranged inside the housing 10. A housing bearing 16 is installed in the installation groove 15. The rotating main shaft 6 is divided into a shaft body 61, a first shaft head 62, and a second shaft head 63. The first shaft head 62 passes through the housing bearing 16. The outer diameter of the first shaft head 62 is smaller than the outer diameter of the shaft body 61, forming a stepped shape. An elastic device 17 is arranged between the connection of the first shaft head 62 and the shaft body 61 and the installation groove 15. The elastic device 17 is a disc spring, sleeved on the first shaft head 62. A thrust piece is arranged between the moving disk 7 and the flower disk 9. An upper cover 18 is detachably arranged on the upper part of the housing 10. Sealing strips 19 are installed in both the moving disk 7 and the static disk 8. An oil seal 20 is arranged at the connection between the flower disk 9 and the rotating main shaft 6. The oil seal 20 is located inside the flower disk 9. An elastic retaining ring 21 is arranged above the oil seal 20.

[0017] When operating at low speed, the sealing strips in the moving disk 7 and the static disk 8 do not float up, which will cause internal leakage. The disc spring on the first shaft head 62 of the rotating main shaft 6 will be compressed to generate an upward elastic force to lift the moving disk 7 to always fit and seal. When operating at high speed and high pressure, the high pressure generated in the compression chamber will cause a reaction force on the moving disk 7, causing the moving disk 7 to disengage. Without the reverse upward elastic force of the elastic device 17, it may cause some compressed gas to leak, resulting in repeated compression and increased power consumption. The structure is relatively simple and easy to assemble.

[0018] The above has introduced in detail a control structure for adjusting the internal axial clearance of a compression molding machine provided by the present invention. The description of the specific embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the premise of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A control structure for adjusting the internal axial clearance of a compressor, comprising a rotor core (1) and a stator core (2), wherein the stator core (2) wraps the rotor core (1), cover plates (3) are arranged on both the upper and lower sides of the rotor core (1), skeletons (4) are arranged on both the upper and lower sides of the stator core (2), and skeleton protective sleeves (5) are arranged outside the skeletons (4), and it is characterized in that: It further includes a rotating main shaft (6), a moving disk (7), a static disk (8) and a face plate (9). The rotating main shaft (6), the stator core (2), the moving disk (7), the static disk (8) and the face plate (9) are all installed in a housing (10). The moving disk (7) is installed in the static disk (8), the face plate (9) is connected to the static disk (8), and an installation groove (15) is provided in the housing (10). One end of the rotating main shaft (6) is inserted into the face plate (9), and the other end is installed in the installation groove (15). An elastic device (17) is provided on the outer circumferential surface of the rotating main shaft (6) near the installation groove (15).

2. The axial clearance adjustment structure inside the compressor according to claim 1, characterized in that: A housing bearing (16) is provided in the installation groove (15). The rotating main shaft (6) is divided into a shaft body (61), a first shaft head (62) and a second shaft head (63). The first shaft head (62) is inserted into the housing bearing (16). The outer diameter of the first shaft head (62) is smaller than that of the shaft body (61), forming a stepped shape with the shaft body (61). An elastic device (17) is provided between the junction of the first shaft head (62) and the shaft body (61) and the installation groove (15). The elastic device (17) is a disc spring and is sleeved on the first shaft head (62).

3. A control structure for adjusting the internal axial clearance of a compressor according to claim 2, characterized in that: The outside of the face plate (9) is connected to the static disk (8) through a positioning pin and fixed on the housing (10). An anti-rotation ring (11) and an anti-rotation pin (12) are provided in the moving disk (7). The moving disk (7) is installed on the face plate (9) through the anti-rotation ring (11) and the anti-rotation pin (12). A face plate bearing (13) and an eccentric wheel (14) are provided inside the face plate (9). The eccentric wheel (14) is in a "convex" shape, and the protruding part is installed in the moving disk (7). The face plate bearing (13) is located below the eccentric wheel (14). The second shaft head (62) is inserted into the face plate bearing (13), and a main shaft pin is provided on the second shaft head, and the main shaft pin is inserted into the eccentric wheel.

4. A control structure for adjusting the internal axial clearance of a compressor according to claim 1, characterized in that: A thrust piece is provided between the moving disk (7) and the face plate (9). The upper part of the housing (10) is detachably provided with an upper cover (18). Sealing strips (19) are installed in both the moving disk (7) and the static disk (8).

5. A control structure for adjusting the internal axial clearance of a compressor according to claim 4, characterized in that An oil seal (20) is provided at the connection between the face plate (9) and the rotating main shaft (6). The oil seal (20) is located inside the face plate (9), and a snap ring (21) is provided above the oil seal (20).

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