CN216111258U

CN216111258U - Scroll compressor having a plurality of scroll members

Info

Publication number: CN216111258U
Application number: CN202122800282.1U
Authority: CN
Inventors: 宗孔
Original assignee: Shandong Zhongcheng New Energy Co ltd
Current assignee: Shandong Zhongcheng New Energy Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-03-22
Anticipated expiration: 2031-11-16

Abstract

The utility model discloses a scroll compressor, wherein an eccentric main shaft is connected in a shell through a shell bearing, the eccentric main shaft is connected with a movable scroll plate, the outer end of the shaft of the movable scroll plate is provided with a fixed scroll plate meshed with the movable scroll plate, the outer side of the shaft of the fixed scroll plate is provided with a fixed plate seat connected with the open end of the shell, the eccentric main shaft is combined with the movable scroll plate through a driving joint and a cross sliding ring, a movable disc bearing is arranged between the cross sliding ring and the driving joint, a bearing seat is arranged between the outer side of the cross sliding ring and the driving joint in the radial direction and the shell, a bearing seat bearing is arranged between the bearing seat and the eccentric main shaft, and the movable disc bearing, the bearing seat bearing and the shell bearing are self-lubricating bearings. The utility model can solve the problem of high abrasion and noise caused by the fact that the bearing of the prior positive displacement type spiral compressor is lack of oil and can not be lubricated.

Description

Scroll compressor having a plurality of scroll members

Technical Field

The utility model relates to the technical field of manufacturing of compressor accessories, in particular to a positive displacement type scroll compressor with a self-lubricating bearing.

Background

The existing positive displacement vortex fluid compressor comprises a shell with an opening at one end, an eccentric main shaft connected with the shell through a shell bearing is arranged in the shell, the eccentric main shaft is connected with a movable vortex disc, a fixed vortex disc meshed with the movable vortex disc is arranged at the outer end of the shaft of the movable vortex disc, a fixed disc seat is arranged on the outer side of the shaft of the fixed vortex disc and connected with the opening end of the shell, a suction cavity is formed in the space on the outer radial side of the fixed vortex disc and the movable vortex disc, the eccentric main shaft is combined with the movable vortex disc through a driving joint and a cross sliding ring, a movable disc bearing is arranged between the cross sliding ring and the driving joint, a bearing seat is arranged between the outer radial sides of the cross sliding ring and the driving joint and the shell, and a bearing seat is arranged between the bearing seat and the eccentric main shaft; the motor for driving the eccentric main shaft to rotate is arranged in the casing, an air inlet is formed in one end of the motor of the casing, and an air outlet is formed in the static disc seat.

Because the bearings at the three positions generally use ball bearings, the dynamic disc ball bearings on the back surfaces of the driving joint and the dynamic disc ball bearings are stressed mutually and generate friction during movement, so that lubricating oil is needed for lubrication, but under the condition that the driving joint and the dynamic disc ball bearings are stressed mutually, the lubricating oil is difficult to enter the bearings, so that oil shortage or even no oil is easy to occur in the bearings for lubrication, meanwhile, the dynamic disc ball bearings are positioned on the back surfaces of the dynamic disc discs in the high-pressure exhaust middle parts, the temperature of fluid is higher after high-pressure compression exhaust, so that the temperature of the dynamic disc ball bearings is also too high, and faults are generated; the bearing seat ball bearing and the machine shell ball bearing can cause that lubricating oil is difficult to enter the ball bearing because the bearing seat, the eccentric main shaft and the ball shaft connected with the bearing seat and the eccentric main shaft bear mutual axial force, but the lubricating oil is insufficient and can not be lubricated, so that the lubricating oil and the ball bearing are mutually rubbed to be abraded and generate larger noise.

Disclosure of Invention

The utility model aims to solve the problem that a scroll compressor is provided to solve the problem that a bearing of the conventional positive displacement scroll compressor is lack of oil and cannot be lubricated, so that abrasion and noise are high.

In order to solve the problems, the technical scheme of the utility model is as follows: the scroll compressor comprises a shell with an opening at one end, an eccentric main shaft connected with the shell through a shell bearing is arranged in the shell, the eccentric main shaft is connected with a movable scroll plate, a fixed scroll plate meshed with the movable scroll plate is arranged at the outer end of the movable scroll plate, a fixed plate seat is arranged at the outer side of the fixed scroll plate in the axial direction and connected with the opening end of the shell, the eccentric main shaft is combined with the movable scroll plate through a driving joint and a cross sliding ring, a movable disc bearing is arranged between the cross sliding ring and the driving joint, a bearing seat is arranged between the outer side of the cross sliding ring and the driving joint in the radial direction and the shell, a bearing seat bearing is arranged between the bearing seat and the eccentric main shaft, a motor for driving the eccentric main shaft to rotate is arranged in the shell, an air inlet is arranged at one end of the motor of the shell, an air outlet is arranged on the fixed plate seat, and the movable disc bearing is a self-lubricating bearing, the self-lubricating bearing comprises a self-lubricating inner ring which is arranged in a metal outer ring and used for mutually lubricating and rotating with a rotating main body in the metal outer ring, an inner ring oil duct used for flowing lubricating oil is axially formed in the self-lubricating inner ring, and the self-lubricating inner ring is made of a self-lubricating material.

In the above technical solution, a more specific solution may be: and an outer ring oil duct for flowing in lubricating oil is axially formed in the metal outer ring of the self-lubricating bearing.

Further: and an outer ring oil duct is arranged at the same position of the metal outer ring of the self-lubricating bearing in the axial direction as the inner ring oil duct of the self-lubricating inner ring.

Further: the self-lubricating inner ring is a steel-based Teflon composite self-lubricating inner ring.

Further: the shell bearing or the bearing seat bearing is a self-lubricating bearing.

Further: the shell bearing and the bearing seat bearing are both self-lubricating bearings.

Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

the scroll compressor adopts the bearing formed by the self-lubricating inner ring which is arranged in the metal outer ring and used for mutually lubricating and mutually rotating with the rotating main body in the metal outer ring, so that the bearing which is difficult to enter lubricating oil under the environment of mutual axial force can mutually lubricate and mutually rotate with the rotating main body, and the self-lubricating effect is achieved; in addition, the arrangement of the inner ring oil duct and the outer ring oil duct can ensure that lubricating oil can enter the bearing to the maximum extent especially when the inner ring oil duct and the outer ring oil duct are at the same position, thereby avoiding the phenomena of abrasion and generation of loud noise caused by the fact that the bearing cannot be lubricated.

Drawings

FIG. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a self-lubricating bearing according to an embodiment of the present invention;

fig. 3 is a right side view of a self-lubricating bearing of an embodiment of the present invention.

Detailed Description

The embodiments of the utility model will be described in further detail with reference to the accompanying drawings:

the scroll compressor shown in fig. 1 to 3 comprises a casing 3 with an opening at one end, an eccentric main shaft 9 connected with the casing 1 through a casing bearing 12, a movable scroll 4 connected with the eccentric main shaft 9, a fixed scroll 2 engaged with the movable scroll 4 at the axial outer end of the movable scroll 4, a fixed scroll seat 1 arranged at the axial outer side of the fixed scroll 2 and connected with the opening end of the casing 3, a driving joint 13 and a cross-shaped sliding ring 6 connecting the eccentric main shaft 9 with the movable scroll 4, a movable disc bearing 5 arranged between the cross-shaped sliding ring 6 and the driving joint 13, a bearing seat 7 arranged between the radial outer side of the cross-shaped sliding ring 6 and the driving joint 13 and the casing 3, a bearing seat bearing 8 arranged between the bearing seat 7 and the eccentric main shaft 9, a motor 10 arranged in the casing 13 and driving the eccentric main shaft 9 to rotate, a motor terminal 11 connected with the motor 10 arranged on the casing 3, an air inlet 14 arranged at one end of the motor 10 on the casing 3, the exhaust port 15 is provided on the stationary platen base 1.

The movable disc bearing 5 is a self-lubricating bearing, the self-lubricating bearing comprises a self-lubricating inner ring 21 which is arranged in a metal outer ring 20 and used for mutually lubricating and rotating with a rotating main body in the metal outer ring, an inner ring oil duct 21-1 used for flowing in lubricating oil is axially formed in the self-lubricating inner ring 21, the self-lubricating inner ring 21 is a self-lubricating inner ring made of self-lubricating materials, and an outer ring oil duct 20-1 is arranged at the same position of the metal outer ring 20 of the self-lubricating bearing and the inner ring oil duct 21-1 of the self-lubricating inner ring 21 in the axial direction. Since the movable disc bearing 5 is changed from the original ball bearing to a self-lubricating bearing, the driving joint 13 is also changed from a cylinder with a boss for restraining the ball bearing to a simple structure with only a cylinder, and the processing difficulty is reduced. The shell bearing 12 and the bearing seat bearing 8 are self-lubricating bearings, and bosses for restraining the ball bearings are also reduced on the bearing seat 7, so that the processing difficulty and the processing cost are reduced.

In other embodiments, the outer ring oil duct and the inner ring oil duct may be disposed at different positions, or only the dynamic disc bearing may adopt a self-lubricating bearing, or only the dynamic disc bearing and the bearing seat bearing may adopt a self-lubricating bearing, or only the dynamic disc bearing and the housing bearing may adopt a self-lubricating bearing.

The scroll compressor adopts the bearing formed by the self-lubricating inner ring 21 in the metal outer ring 20 for mutually lubricating and mutually rotating with the rotating main body in the metal outer ring, so that the bearing which is difficult to enter lubricating oil under the environment of mutual axial force can mutually lubricate and mutually rotate with the rotating main body, and the self-lubricating effect is achieved; in addition, the arrangement of the inner ring oil passage 21-1 and the outer ring oil passage 20-1, especially when the inner ring oil passage 21-1 and the outer ring oil passage 20-1 are at the same position, lubricating oil can enter the bearing to the maximum extent, and the phenomena of abrasion and generation of loud noise caused by the fact that the bearing cannot be lubricated are avoided.

Claims

1. A scroll compressor comprises a casing with an opening at one end, an eccentric main shaft connected with the casing through a casing bearing in the casing, the eccentric main shaft is connected with a movable vortex plate, the outer end of the shaft of the movable vortex plate is provided with a fixed vortex plate meshed with the movable vortex plate, a static disc seat is arranged on the axial outer side of the static scroll disc and connected with the opening end of the machine shell, the eccentric main shaft is combined with the movable scroll disc through a driving joint and a cross slip ring, a movable disc bearing is arranged between the cross slip ring and the driving joint, a bearing seat is arranged between the radial outer sides of the cross slip ring and the driving joint and the shell, a bearing seat bearing is arranged between the bearing seat and the eccentric main shaft, a motor for driving the eccentric main shaft to rotate is arranged in the shell, the casing in the one end of motor is equipped with the air inlet, and the gas vent is located on the quiet dish seat, its characterized in that: the movable disc bearing is a self-lubricating bearing, the self-lubricating bearing comprises a self-lubricating inner ring which is arranged in a metal outer ring and is mutually lubricated and rotated with a rotating main body in the metal outer ring, an inner ring oil channel for flowing lubricating oil is axially formed in the self-lubricating inner ring, and the self-lubricating inner ring is made of a self-lubricating material.

2. The scroll compressor of claim 1, wherein: and an outer ring oil duct for flowing in lubricating oil is axially formed in the metal outer ring of the self-lubricating bearing.

3. The scroll compressor of claim 2, wherein: and an outer ring oil duct is arranged at the same position of the metal outer ring of the self-lubricating bearing in the axial direction as the inner ring oil duct of the self-lubricating inner ring.

4. The scroll compressor of any one of claims 1 to 3, wherein: the self-lubricating inner ring is a steel-based Teflon composite self-lubricating inner ring.

5. The scroll compressor of any one of claims 1 to 3, wherein: the shell bearing or the bearing seat bearing is a self-lubricating bearing.

6. The scroll compressor of claim 5, wherein: the shell bearing and the bearing seat bearing are both self-lubricating bearings.

7. The scroll compressor of claim 4, wherein: the shell bearing or the bearing seat bearing is a self-lubricating bearing.

8. The scroll compressor of claim 7, wherein: the shell bearing and the bearing seat bearing are both self-lubricating bearings.