Scroll compressor

Abstract

A first clearance (15) in the thrust direction between the blade bottom of a stationary end plate (2b) and the blade top of an orbiting wrap portion (4a) and a second clearance (16) in the thrust direction between the blade bottom of an orbiting end plate (4b) and a stationary wrap portion (2a) are formed in shapes where the clearances progressively increase from the outer periphery side to the inner periphery side. Also, the first clearance (15) is set larger than the second clearance (16). As a result, contact surface pressure of each wrap portion (2a, 4a) is kept low in heat distortion. Further, contact pressure between the blade top of a stationary scroll part (2) and the blade bottom of an orbiting scroll part (4) is uniformly kept, so that load applied to each scroll part (2, 4) is uniformly received by a thrust surface.

Description

technical field [0001] The present invention relates to a scroll compressor. In the scroll compressor, a fixed scroll member and a rotating scroll member are meshed to form a compression chamber. The compression chamber moves while changing its volume through the rotational movement of the rotating scroll member. According to this, suction, compression and discharge of the refrigerant are performed. Background technique [0002] Conventionally, as hermetic compressors for refrigeration and air conditioning, there are reciprocating, rotor, and scroll compressors, and various types are used in the field of refrigeration and air conditioning for home use and business use. Currently, developments are being made to make use of the respective characteristics in terms of cost, performance, and the like. [0003] Among them, compressors in which a compression mechanism and an electric mechanism are housed in a container are represented by so-called hermetic compressors that are noi...

AI Technical Summary

Problems solved by technology

[0027] In addition, in the scroll compressor described in Patent Document 2, considering the compression chambers formed between the fixed scroll member and the orbiting scroll member, the compression heat generated by the compression action makes each coil Thermal expansion of the body without considering the deformation of the fixed scroll and orbiting scroll due to the pressure difference between the discharge pressure and the suction pressure of the compressor

Especially in the shell part of the eccentric bearing in the orbiting scroll, the thickness of the mirror plate of the orbiting scroll is small, and due to the pressure difference between the discharge pressure and the suction pressure, the deformation to the side of the fixed scroll becomes large, and the orbiting scroll Since the tooth bottom of the scroll and the tooth tip of the fixed scroll do not fully contact, the contact surface pressure increases, mutual adhesion occurs, and there is a problem that the compression efficiency and durability of the compressor are reduced.

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