Turbocompressor

Abstract

An improved scroll compressor which comprises a fixed scroll and an orbiting scroll, as well as an Oldham's coupling which enables the orbiting scroll to have a orbital movement is disclosed herein. The Oldham's ring of the Oldham's coupling is so formed that its sliding surfaces for counterpart members to slide thereon are formed by a base material containing silicon particles, while the surface of each silicon particle (remaining on the base material's surface serving as a slidable surface for counterpart members to slide thereon) is formed into a flat surface. In practice, a ratio of silicon portions formed into flat surfaces to an entire sliding area of the Oldham's coupling is in a range of 3% to 20%, preferably 5% to 15%. With the use of the scroll compressor of the present invention, it is possible to improve the wear resistance of the Oldham's ring of the Oldham's coupling and its counterpart members in the scroll compressor.

Description

technical field [0001] The present invention relates to a scroll compressor for compressing a coolant or air, and more particularly, to a scroll compressor having an orbiting scroll and an Oldham coupling having a Oldham's ring capable of swinging or orbiting the orbiting scroll, the sliding part of the Oldham coupling has improved wear resistance. Background technique [0002] Since the scroll compressor has high efficiency, high reliability and low operating noise compared with other types of compressors, it is widely used in many fields such as refrigerators or air conditioners in industry. [0003] Such a scroll compressor includes a fixed scroll fixed in a frame structure of the compressor and an orbiting scroll positioned opposite to the fixed scroll. The fixed scroll has a circular base on which a spiral wrap structure is formed. Similarly, the orbiting scroll also has a circular base plate on which a spiral wrap structure is formed. The arrangement of the fixed sc...

AI Technical Summary

Problems solved by technology

That is, the plating process of so-called SiC-dispersed plating (SiC-dispersed plating) must be dimensionally managed in order to control the thickness of each plated layer, but if the plated layer has fallen off from its original position, it cannot be avoided. The effect of the wear of the protrusion

[0011] In the case of surface-treating the sliding surface of each protrusion to form a boride film of iron thereon, although the hardness of each protrusion can be increased, there is a tendency for the corresponding protrusion to slide thereon. Wear occurs on the corresponding parts, that is, wear will occur on the key grooves formed on the frame structure and on the rear surface of the bottom plate of the orbiting scroll

[0012] On the other hand, although it can be considered to increase the sliding area on each protrusion to increase its wear resistance, increasing the sliding area requires the Oldham coupling to be made in a large size.

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