Capacity variable rotary compressor

Abstract

The invention provides a variable-capacity rotary compressor to prevent the eccentric bushing inserted into the rotating shaft from rotating before the rotating shaft, so as to prevent the pin from hitting the two ends of the groove during the compression process. The provided variable capacity rotary compressor includes: first and second compression chambers with different internal volumes; a rotating shaft passing through the first and second compression chambers; first and second eccentrically arranged on the rotating shaft Bushings, the first and second eccentric bushings are respectively arranged inside the first and second compression chambers; the first and second rollers are respectively arranged on the outer peripheral surfaces of the first and second eccentric bushings; The first and second vanes arranged in the first and second compression chambers, the first and second vanes are closely attached to the outer peripheral surfaces of the first and second rollers; the first and second eccentric bushings respectively have Planar first and second planar portions are formed at certain angular positions on the outer peripheral surface.

Description

technical field [0001] The present invention relates to a variable-capacity rotary compressor, in particular to a variable-capacity rotary compressor which prevents the clutch pin from colliding with the eccentric bush by preventing the eccentric bush arranged on the rotating shaft from rotating prior to the rotating shaft. Background technique [0002] Refrigeration devices such as air conditioners and refrigerators use a refrigeration cycle to cool a specific space, and use a compressor to compress refrigerant gas. The cooling capacity of such a refrigeration device is usually determined by the compression capacity of the compressor. If the compression capacity of the compressor can be changed, the refrigeration device can be controlled to operate in an optimal state according to the surrounding conditions, thereby saving energy. [0003] The applicant of the present invention once applied for a variable capacity rotary compressor disclosed in Korean Laid-Open Patent Publi...

AI Technical Summary

Problems solved by technology

[0009] However, the existing variable-capacity rotary compressors need to additionally manufacture such constraining parts and arrange them at both ends of the groove, which not only increases the installation cost and time, but also increases the cost and time of installation as the clutch pin is repeatedly inserted into or disengaged from the constraining parts. The elasticity of the constraining parts decreases due to the movement of the restraint parts, so when used for a long time, the impact mitigation effect of the constraining parts may be reduced

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