Variable capacity rotary compressor

Abstract

A variable capacity rotary compressor includes a housing having a cylindrical compressing chamber defined therein, a rotating shaft having an eccentric body part which rotates in the compressing chamber, a ring piston fitted over the eccentric body part of the rotating shaft so as to have the ring piston rotate while being in contact with an inner surface of the compressing chamber, a vane mounted in the housing so as to have the vane advance or retract in a radial direction of the compressing chamber in accordance with a rotation of the ring piston, and a control unit which is connected to the vane and moves in opposite directions in response to pressures of a refrigerant inlet and a refrigerant outlet of the compressor, so as to control a moving range of the vane. Accordingly, a simpler construction of the compressor is achieved and a refrigerant compressing capacity is easily controlled.

Description

[0001] Cross-referenced related applications [0002] This application claims the priority of Korean Patent Application No. 2002-39841 filed with the Korean Intellectual Property Office on June 9, 2002, and the disclosed content is hereby incorporated by reference. Invention field [0003] The present invention generally relates to a rotary compressor used in a cooling cycle, and more particularly, to a variable capacity rotary compressor with a variable compression capacity. Background technique [0004] Generally speaking, refrigeration systems such as air conditioners or refrigerators use variable-capacity rotary compressors whose refrigerant compression capacity can be changed as needed to change the refrigeration capacity of the system. [0005] figure 1 A cross-sectional view of a conventional variable capacity rotary compressor disclosed in U.S. Patent No. 5,871,342 is shown. Such as figure 1 As shown, the conventional variable capacity rotary compressor includes a casin...

AI Technical Summary

Problems solved by technology

[0007] However, the problem with the above-mentioned variable capacity rotary compressor is that the structure of the vane inertia assembly 5 is relatively complicated.

Due to the complex structure, it is difficult to produce the variable capacity rotary compressor and increases the production cost of the variable capacity rotary compressor

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