Capacity variable rotary compressor

Abstract

The present invention provides a capacity variable rotary compressor capable of preventing the eccentric bush inserted into the shaft from rotating in preference to the shaft so as to prevent the clutch pin from impacting two ends of the groove during compression process. The provided capacity variable rotary compressor comprises a first and a second compression chambers of different inner volumes; a shaft perforating the first compression chamber and the second compression chamber; a first eccentric bush and a second eccentric bush which are arranged on the shaft eccentrically and positioned in the first compression chamber and the second compression chamber respectively; a first roller and a second roller are arrange on the periphery surface of the first eccentric bush and the second eccentric bush respectively; a first and a second blade which are arrange in the first compression chamber and the second compression chamber respectively radially and cleave to the periphery surface of the first roller and the second roller respectively; the first eccentric bush and the second eccentric bush are respectively provided with a first plane part and a second plane part which form planes at the given angular position of the periphery surfaces.

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 La...

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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