Scroll compressor

Abstract

A scroll compressor includes a casing, a drive motor arranged in an inner space of the casing, a rotary shaft coupled to the drive motor to rotate, a main frame arranged under the drive motor, a fixed scroll arranged under the main frame, an orbiting scroll engaging with the orbiting scroll to make an orbiting motion, the rotary shaft being inserted into and eccentrically coupled to the orbiting scroll, a first bearing positioned between the main frame and the rotary shaft, and a second bearing positioned between the fixed scroll and the rotary shaft, where a gap between the first and second bearings and the rotary shaft varies with a vertical position. The scroll compressor may prevent the eccentric effect occurring during rotation from deteriorating performance of the bearings, thereby preventing compression performance from being lowered.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of Korean Patent Application No. 10-2019-0026741, filed on Mar. 8, 2019, which is hereby incorporated by reference as if fully set forth herein.BACKGROUND OF THE INVENTIONField of the Invention[0002]The present invention relates to a compressor having a structure for compensating for eccentricity of a rotary shaft caused by a driving load.Discussion of the Related Art[0003]Generally, a compressor is applied to a vapor compression type refrigeration cycle (hereinafter referred to simply as a refrigeration cycle) such as a refrigerator or an air conditioner. The compressor compresses the refrigerant to provide work necessary for heat exchange in the refrigeration cycle. Compressors can be divided into reciprocating compressors, rotary compressors, and scroll compressors according to how the refrigerant is compressed.[0004]The reciprocating compressor is a system in which the volume of the compression spac...

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