Rotary compressor

Abstract

A twin rotary compressor is provided. In the twin rotary compressor, a refrigerant suction pipe may be connected to a middle plate positioned between a first cylinder and a second cylinder to reduce a height of the first cylinder, so that heights of a first rolling piston and a first vane may also be lowered. This may allow a contact area between the first rolling piston and the first vane to be decreased so as to reduce refrigerant leakage from a first compression space of the first cylinder, resulting in improvement of compression efficiency of the compressor.

Description

technical field [0001] The invention relates to a double-rotary compressor with a plurality of compression spaces. Background technique [0002] Refrigerant compressors are generally used in refrigerators or air conditioners utilizing a vapor compression refrigeration cycle (hereinafter, referred to as "refrigeration cycle"), and constant-speed type compressors driven at a substantially constant speed and controllable rotation speeds have also been used. inverter compressor. [0003] The drive motor and the compressor controlled by the drive motor are installed in the inner space of the hermetic housing, which is called a hermetic compressor, and the refrigerant compressor whose drive motor is installed separately outside the housing is called an open compressor. . Most domestic or commercial refrigerators use hermetic compressors. Also, refrigerant compressors may be classified into reciprocating compressors, scroll compressors, rotary compressors, etc. according to diff...

AI Technical Summary

Problems solved by technology

However, when the height of the lower cylinder is high, the contact area between the rotary piston and the vane increases in the lower cylinder, and thus the refrigerant leakage between the rotary piston and the vane increases, thereby causing further compressor loss

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