CN107461337B

CN107461337B - Driving mechanism of electric scroll compressor

Info

Publication number: CN107461337B
Application number: CN201710693189.0A
Authority: CN
Inventors: 黄少林; 王书功; 张仁旭
Original assignee: Zhejiang Rixin Auto Parts Co Ltd
Current assignee: Zhejiang Rixin Auto Parts Co., Ltd
Priority date: 2017-08-14
Filing date: 2017-08-14
Publication date: 2021-08-24
Anticipated expiration: 2037-08-14
Also published as: CN107461337A

Abstract

The invention belongs to the technical field of compressors, and particularly relates to a driving mechanism of an electric scroll compressor. The technical problems that the structure is complex and the equipment is short in service life due to serious abrasion in the prior art are solved. This actuating mechanism of electronic scroll compressor is including setting up the motor in the casing, motor and vortex subassembly on the driving disk between link to each other through transmission structure, transmission structure including setting up the eccentric wheel subassembly between motor and driving disk, the opposite side of eccentric wheel subassembly and driving disk between link to each other through transition subassembly, transition subassembly on have the rotation subassembly of preventing the driving disk rotation. Compared with the prior art, the invention has the advantages that: better reduce the abrasion and prolong the service life.

Description

Driving mechanism of electric scroll compressor

Technical Field

The invention belongs to the technical field of compressors, and particularly relates to a driving mechanism of an electric scroll compressor.

Background

The scroll compressor is a positive displacement compressor, and the compression component consists of a movable scroll plate and a fixed scroll. The working principle is that the relative revolution motion of the movable and static vortex plates is utilized to form the continuous change of the enclosed volume, thereby realizing the purpose of compressing the gas. It is mainly used in air-conditioning, refrigeration, general gas compression, automobile engine booster and vacuum pump, etc. and can replace traditional medium and small reciprocating compressor in a large range. When the compressor works, the friction loss is inevitably generated between the movable disc and the fixed disc, between the anti-rotation mechanism and the matching key groove, between the crankshaft and the main bearing and the auxiliary bearing, and the relative sliding is generated. The friction loss between the movable disc and the fixed disc refers to the friction loss in the working cavity of the compressor, and mainly comprises the following components: 1, the machining precision, the planeness, the position degree and the like of the spiral line, the tooth crest and the bottom surface of the movable disc and the fixed disc do not meet the requirements. 2 the dust content of the whole compressor is higher, or the particle diameter of solid dust (such as welding slag, processing residual dust and the like) is overlarge. The structure is complicated and the abrasion is serious, so that the service life of the equipment is not long.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a drive mechanism for an electric scroll compressor, which has a simple structure and a reduced service life due to reduced wear.

In order to achieve the purpose, the invention adopts the following technical scheme: this electric scroll compressor's actuating mechanism is including setting up the motor in the casing, motor and vortex subassembly on the driving disk between link to each other through transmission structure, transmission structure including setting up the eccentric wheel subassembly between motor and driving disk, the central point of one side of output shaft and eccentric wheel subassembly link to each other and drive eccentric wheel subassembly along output shaft circumferential direction, opposite side and the driving disk of eccentric wheel subassembly between link to each other through transition subassembly, and transition subassembly setting is on the non-central point of eccentric wheel subassembly, transition subassembly on have the rotation subassembly of preventing of driving disk rotation. The transition assembly can better reduce abrasion and prolong the service life.

In the above-mentioned driving mechanism of the electric scroll compressor, the transition assembly includes a needle roller bearing disposed between the eccentric wheel assembly and the movable platen, one side of the eccentric wheel assembly has an eccentric shaft extending toward the movable platen, the needle roller bearing is fixed to one side of the movable platen, and the eccentric shaft is inserted into the needle roller bearing.

In the above driving mechanism of the electric scroll compressor, the anti-rotation assembly includes a plurality of anti-rotation rings circumferentially disposed on the movable disk, a wear-resistant plate is disposed between the movable disk and the eccentric wheel assembly, limit pins corresponding to the anti-rotation rings one to one are circumferentially disposed on the wear-resistant plate, the anti-rotation rings are sleeved on the limit pins, and the limit pins are provided with anti-friction structures.

In the above-mentioned driving mechanism of the electric scroll compressor, the anti-friction structure includes a rotating drum which is circumferentially and rotatably disposed on the limit pin, an enlarged portion which prevents the rotating drum from disengaging from the limit pin is disposed at an end portion of the limit pin, and an anti-slip ring is circumferentially disposed on an outer side of the rotating drum.

In the above-described drive mechanism for an electric scroll compressor, a ball bearing is provided between the inner side of the rotary drum and the stopper pin.

In the above-described drive mechanism for an electric scroll compressor, the rotation preventing ring has a swivel inside thereof, and a rolling bearing is provided between the swivel and the rotation preventing ring.

In the driving mechanism of the electric scroll compressor, the movable disc is hermetically inserted in the fixed disc.

Compared with the prior art, the driving mechanism of the electric scroll compressor has the advantages that: the transition assembly utilizes the needle bearing to carry out rotation transition, reduces abrasion as far as possible while simplifying the structure, and the service life of equipment is prolonged in cooperation with the antifriction structure.

Drawings

Fig. 1 is an exploded view of an electric scroll compressor provided by the present invention.

Fig. 2 is a schematic view of a drive mechanism of an electric scroll compressor provided by the present invention.

Fig. 3 is a sectional view of the anti-rotation ring provided by the present invention.

FIG. 4 is a cross-sectional view of a spacing post provided by the present invention.

In the figure, a shell 1, a motor 2, a vortex component 3, a movable disc 4, a transmission structure 5, an eccentric wheel component 6, an output shaft 7, a transition component 8, a fixed disc preventing 9, an anti-rotation component 10, a needle bearing 11, an eccentric shaft 12, an anti-rotation ring 13, a wear-resistant sheet 14, a limiting pin 15, an anti-friction structure 16, a rotary drum 17, an expansion part 18, an anti-slip ring 19, a ball bearing 20, a rotary ring 21 and a rotary bearing 22 are arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-4, the driving mechanism of the electric scroll compressor comprises an electric motor 2 disposed in a housing 1, the electric motor 2 is connected with a movable plate 4 on a scroll component 3 through a transmission structure 5, the transmission structure 5 comprises an eccentric wheel component 6 disposed between the electric motor 2 and the movable plate 4, an output shaft 7 is connected with a central point of one side of the eccentric wheel component 6 and drives the eccentric wheel component 6 to rotate circumferentially along the output shaft 7, the other side of the eccentric wheel component 6 is connected with the movable plate 4 through a transition component 8, the transition component 8 is disposed on a non-central point of the eccentric wheel component 6, and the transition component 8 is provided with an anti-rotation component 10 for preventing the rotation of the movable plate 4. The axial rotation output by the motor 2 is converted into the turnover of the movable disc 4 through the eccentric wheel component 6, the movable disc 4 is inserted in the static disc 9 in a sealing mode, and the air is continuously sucked and compressed while the circumferential rotation is carried out in the static disc 9, so that the purpose of air compression is achieved. Wherein transition subassembly 8 can be better carry out stable conversion with motor 2 output, improve overall stability, and simple structure has reduced the wearing and tearing between the spare part, has prolonged life.

Specifically, the transition assembly 8 includes a needle bearing 11 disposed between the eccentric wheel assembly 6 and the movable plate 4, the eccentric wheel assembly 6 has an eccentric shaft 12 extending toward the movable plate 4, the needle bearing 11 is fixed to the movable plate 4, and the eccentric shaft 12 is inserted through the needle bearing 11. Most of the market uses ball bearings to operate, and the needle roller bearing 11 can omit unnecessary inner rings, and the eccentric shaft 12 is directly inserted, so that the structure is simplified, and a better lubricating and anti-friction effect is achieved.

Preferably, the anti-rotation assembly 10 includes a plurality of anti-rotation rings 13 circumferentially disposed on the movable disk 4, a wear pad 14 is disposed between the movable disk 4 and the eccentric wheel assembly 6, the wear pad 14 is circumferentially provided with limit pins 15 corresponding to the anti-rotation rings 13 one by one, the anti-rotation rings 13 are sleeved on the limit pins 15, and the limit pins 15 are provided with anti-friction structures 16. The anti-friction structure 16 comprises a rotary drum 17 which is arranged on the limit pin 15 in a circumferential rotation mode, an expanded part 18 which prevents the rotary drum 17 from being separated from the limit pin 15 is arranged at the end part of the limit pin 15, and an anti-slip ring 19 is arranged on the outer side of the rotary drum 17 in the circumferential direction. A ball bearing 20 is provided between the inside of the drum 17 and the stopper pin 15. The rotation preventing ring 13 is provided with a rotating ring 21 inside, and a rotating bearing 22 is arranged between the rotating ring 21 and the rotation preventing ring 13. The spacing pin 15 penetrates into the anti-rotation ring 13, when the movable disc 4 rotates in the circumferential direction, the spacing pin 15 can prevent the movable disc 4 from rotating, and the rotation of the movable disc 4 can cause the compressed air in the movable disc 4 and the static disc 9 to leak out. In the process of high-speed rotation, the limiting pin 15 and the anti-rotation ring 13 are easy to seriously wear, the rotary drum 17 on the outer side of the limiting pin 15 can effectively avoid serious wear caused by sliding friction, the sliding friction is converted into the rotating friction, the ball bearing 20 is matched to avoid the friction between the rotating 17 and the limiting pin 15, meanwhile, the conversion 13 on the inner side of the anti-rotation ring 13 can also convert the sliding friction into the rotating friction, the rotating bearing 22 is added to reduce the wear as much as possible, and the service life is prolonged.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the terms of the housing 1, the motor 2, the scroll assembly 3, the movable disk 4, the transmission structure 5, the eccentric wheel assembly 6, the output shaft 7, the transition assembly 8, the anti-rotation disk 9, the anti-rotation assembly 10, the needle roller bearing 11, the eccentric shaft 12, the anti-rotation ring 13, the wear pad 14, the limit pin 15, the anti-friction structure 16, the rotary drum 17, the enlarged portion 18, the anti-rotation ring 19, the ball bearing 20, the rotary ring 21, the rotary bearing 22, etc. are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A drive mechanism of an electric scroll compressor includes an electric motor (2) disposed in a housing (1), it is characterized in that the motor (2) is connected with the movable disc (4) on the vortex component (3) through the transmission structure (5), the movable disc (4) is inserted in the static disc (9) in a sealing way, the transmission structure (5) comprises an eccentric wheel component (6) arranged between the motor (2) and the movable disc (4), the center point of one side of the eccentric wheel component (6) is connected with the output shaft (7) and drives the eccentric wheel component (6) to rotate along the circumferential direction of the output shaft (7), the other side of the eccentric wheel component (6) is connected with the movable disc (4) through a transition component (8), and the transition assembly (8) is arranged on the non-central point of the eccentric wheel assembly (6), the transition assembly (8) is provided with an anti-rotation assembly (10) for preventing the movable disc (4) from rotating; the anti-rotation assembly (10) comprises a plurality of anti-rotation rings (13) circumferentially arranged on the movable disc (4), wear-resistant pieces (14) are arranged between the movable disc (4) and the eccentric wheel assembly (6), limiting pins (15) which are in one-to-one correspondence with the anti-rotation rings (13) are circumferentially arranged on the wear-resistant pieces (14), the anti-rotation rings (13) are sleeved on the limiting pins (15), and anti-friction structures (16) are arranged on the limiting pins (15); the anti-friction structure (16) comprises a rotary drum (17) which is arranged on the limiting pin (15) in a circumferential rotating mode, an expanded part (18) which prevents the rotary drum (17) from being separated from the limiting pin (15) is arranged at the end part of the limiting pin (15), and an anti-skid ring (19) is arranged on the outer side of the rotary drum (17) in the circumferential direction.

2. The drive mechanism of an electric scroll compressor according to claim 1, wherein the transition member (8) comprises a needle bearing (11) disposed between the eccentric member (6) and the orbiting plate (4), an eccentric shaft (12) extending toward the orbiting plate (4) is provided at one side of the eccentric member (6), the needle bearing (11) is fixed at one side of the orbiting plate (4) and the eccentric shaft (12) is inserted into the needle bearing (11).

3. The electric scroll compressor driving mechanism according to claim 1 or 2, wherein a ball bearing (20) is provided between an inner side of the rotary drum (17) and the stopper pin (15).

4. The electric scroll compressor driving mechanism according to claim 3, wherein a swivel ring (21) is provided inside the anti-self-rotation ring (13), and a rotation bearing (22) is provided between the swivel ring (21) and the anti-self-rotation ring (13).