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Pump head used for scroll air compressor and scroll air compressor

A technology for air compressors and pump heads, which is applied in the field of compressors, and can solve problems such as the reduction of pump body clearance and wear of seals, and achieve the effects of avoiding over-compression wear and good sealing performance

Pending Publication Date: 2019-01-11
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The technical problem to be solved by the present invention is: the existing turbo compressor fixes the eccentric crank pin on the inner ring of the second pair of bearings through screws, and the fixed and fixed scrolls are axially fixed. The deformation of the middle pump body causes the clearance of the pump body to decrease, resulting in wear of the seals

Method used

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  • Pump head used for scroll air compressor and scroll air compressor
  • Pump head used for scroll air compressor and scroll air compressor
  • Pump head used for scroll air compressor and scroll air compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as Figure 1 to Figure 4 As shown, the floating gap 13 is formed between the anti-rotation crankshaft 12 and the housing 1 or the scroll assembly 11, and one end of the anti-rotation crankshaft 12 is connected to the housing 1 and the scroll assembly 11. One of them is fixedly connected, and the other end of the anti-rotation crankshaft 12 is connected with the other one of the housing 1 and the scroll assembly 11 through an elastic member, and the elastic member is used to provide an edge for the anti-rotation crankshaft 12. Axial elasticity. The floating gap 13 can form a buffer absorption effect for the internal gap of the scroll assembly 11, that is, the pump body gap. When the pump head is shut down and does not work, the floating gap 13 is the largest and the pump body gap is the smallest; When the pressure increases, the floating gap 13 decreases, the pump body gap increases, and the increase in the pump body gap absorbs the deformation of the pump body due...

Embodiment 2

[0052] The technical solution of this embodiment is basically the same as that of Embodiment 1. The main difference is that the floating gap 13 in this embodiment is formed by the eccentric shaft 122 and the scroll assembly 11, that is, the eccentric The floating gap 13 is formed between the shaft 122 and the bearing seat 17; specifically, the floating gap 13 is the gap between the shoulder 113 on the anti-rotation crankshaft 12 and the second bearing 172, and the elastic The component is a compression spring 14, one end of the compression spring 14 is fixed on the bearing seat 17, and the other end is fixed on the eccentric shaft 122; since the compression spring 14 needs to give the anti-rotation crankshaft 12 a direction towards the moving The elastic force in the direction of the scroll disk 111, so the initial state of the compression spring 14 is in a stretched state; preferably, the eccentric shaft 122 is provided with a blind hole 124, and one end of the compression spr...

Embodiment 3

[0055] Such as Figure 5 to Figure 7 As shown, the pump head for a scroll air compressor provided in this embodiment includes a casing 1, a scroll assembly 11 disposed in the casing 1, an anti-rotation bellows and an elastic member, so The scroll assembly 11 includes a movable scroll 111 and a fixed scroll 112 that cooperate with each other, the fixed scroll 112 is fixed on the housing 1, and a bearing seat is arranged on the movable scroll 111 17 , the floating gap 13 is formed between the bearing seat 17 and the movable scroll 111 , and the elastic member is arranged between the bearing seat 17 and the movable scroll 111 .

[0056] The elastic member is in a compressed state in the initial state, providing an elastic force from the movable scroll 111 to the fixed scroll 112 for the movable scroll 111, and the elastic force provided by the elastic member makes the bearing seat 17 and the A maximum floating gap 13 is maintained between the movable scroll 111 and when the inte...

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Abstract

The invention relates to the technical field of new energy automobile braking, in particular to a pump head used for a scroll air compressor and the scroll air compressor. The pump head used for the scroll air compressor provided by the application, comprises a shell, a scroll plate component, an anti-rotation crankshaft and an elastic part, wherein the scroll plate component, the anti-rotation crankshaft and the elastic part are arranged in the shell; a floating gap is formed in the pump head; during stop of the scroll air compressor, an elastic force is provided for the scroll plate component by the elastic part, so that the floating gap is constant and remains at a maximum state, and at the moment, a gap in the scroll plate component is minimum, i.e., a pump body gap is minimum, and internal airtightness of the pump head is good; when internal pressure of the pump head is increased to overcome the elastic force of the elastic part, the floating gap in the pump head is reduced, and at the moment, the pump body gap is increased; deformation of a pump body can be absorbed through increase of the pump body gap, and then, the problem that over-compression abrasion of a sealing element is caused after thermal insulation deformation of the pump body is effectively avoided; and reliability of the sealing element is promoted on the premise of guaranteeing airtightness.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a pump head for a scroll air compressor and the scroll air compressor. Background technique [0002] Oil-free scroll compressors are widely used in the braking field of new energy vehicles because of their oil-free compression, high efficiency, small size, light weight, and stable operation. Generally speaking, a scroll compressor is composed of a casing, a fixed scroll, a moving scroll, a bracket, a crankshaft, an anti-rotation mechanism, a cooling system and a motor. The profiles of the movable and static scrolls are both spiral, and the movable scroll is eccentrically installed relative to the static scroll with a difference of 180°, so multiple crescent-shaped spaces are formed between the movable and static scrolls. When the movable scroll takes the center of the static scroll as the center of rotation and performs a non-rotation-translational motion with a certain radi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/02F04C29/00F04C27/00
CPCF04C18/0215F04C27/00F04C29/00F04C2240/80F04C2240/60
Inventor 魏会军律刚刘双来赵玉晨廖维晓
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION