Automobile air-conditioning scroll compressor

Abstract

The invention discloses an automobile air-conditioning scroll compressor. The automobile air-conditioning scroll compressor comprises an end cover, a fixed scroll disc, a movable scroll disc, a scrolldisc supporting disk, an eccentric shaft, a stator coil and a cylinder body, wherein the cylinder body is barrel-shaped; the stator coil sleeves the eccentric shaft; one end of the eccentric shaft isfixed at the bottom of the cylinder body through a bearing, and the other end of the eccentric shaft is connected with the scroll disc supporting disk; the fixed scroll disc is arranged on the outerside of the scroll disc supporting disk; the movable scroll disc is arranged on the inner side of the fixed scroll disc; and the end cover is matched with the fixed scroll disc and arranged on the outer side of the fixed scroll disc. The automobile air-conditioning scroll compressor has the benefits as follows: the position relationship of the fixed scroll disc and the movable scroll disc in the prior art is changed, the fixed scroll disc wraps the movable scroll disc, so that the gap between the fixed scroll disc and the movable scroll disc is reduced, and that the gas can achieve a higher compression ratio is ensured; besides, through the ingenious design of an air nozzle and the like, the leak tightness between the movable scroll disc and the fixed scroll disc is ensured, the gas afterthe completion of compression is discharged orderly, part of the gas back flows to the bottom of the movable scroll disc, the balance performance of the movable scroll disc is improved, and the abrasion of the movable scroll disc is reduced.

Description

technical field [0001] The invention relates to the field of home appliances, in particular to a scroll-type automotive air-conditioning compressor. Background technique [0002] The main components in the scroll compressor are two involute scrolls with the same shape but staggered by 180° relative to each other. One is a fixed scroll, and the other is driven by an eccentric shaft, and its axis revolves around the A movable scroll that revolves around the axis of the fixed scroll. During work, the two scrolls form a sealing line tangentially in many places, and the proper sealing at the end faces of the two scrolls forms several crescent-shaped air cavities. The sealing line at the common tangent point between the two scrolls is continuously shifted along the vortex curve with the revolution of the movable scroll, so that the shape and size of these crescent-shaped air cavities are always changing. The suction port of the compressor is opened on the upper part of the fixed...

AI Technical Summary

Problems solved by technology

[0003] Between the moving parts or between the moving parts and the fixed parts, a certain movement gap is often maintained to achieve sealing. Gas passing through the gap will inevitably cause leakage, which limits the difficulty of achieving a large compression ratio for scroll compressors.

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