Linear compressor

Abstract

A linear compressor having a dynamic vibration-reducing unit, which is provided at a stopper, by which separation of a cylinder block is prevented, for eliminating vibration generated from a hermetically sealed container at a specific frequency band. The dynamic vibration-reducing unit comprises an elastic member disposed at the lower end of the stopper, and a mass member fixed to the bottom part of the elastic member. The elastic member is formed in the shape of a spiral plate. The elastic member is provided at the center part thereof with a through-hole, which corresponds to an opening of the stopper. The elastic member is provided symmetrically at both ends thereof with fixing parts for fixing the mass member. The mass member is formed in the shape of a plate. The mass member is provided at the center part thereof with a hollow part, which corresponds to the through-hole of the elastic member. Through the hollow part of the mass member are inserted supporting parts of the stopper frame. Both sides of the mass member are symmetrical to each other centering on the hollow part so that both ends of the mass member are fixed to the fixing parts of elastic member by means of welding or bolts.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims the benefit of Korean Patent Application No. 2004-15797, filed on Mar. 9, 2004 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a linear compressor, and, more particularly, to a linear compressor that is capable of eliminating vibration transmitted to a hermetically sealed container due to reciprocating movement of a piston, which is generated at a specific frequency band. [0004] 2. Description of the Related Art [0005] Generally, a linear compressor is used to compress a coolant of a cooling unit, such as a refrigerator or an air conditioner. The linear compressor is provided with a linear motor, which is linearly reciprocated, as a driving unit for moving a piston forward and backward. [0006] The linear compressor comprises: a cylinder block having a compres...

AI Technical Summary

Benefits of technology

[0009] Therefore, it is an aspect of the invention to provide a linear compressor having a dynamic vibration-reducing unit for eliminating vibration generated from a hermetically sealed container at a specific frequency band.

[0010] In accordance with one aspect, the present invention provides a linear compressor comprising: a hermetically sealed container having an airtight space defined therein; a cylinder block disposed in the hermetically sealed container, the cylinder block having a compression chamber defined therein; a stopper frame fixed to the cylinder block; a stopper disposed in the hermetically sealed container for supporting the stopper frame; and a dynamic vibration-reducing unit disposed at the stopper for eliminating vibration generated from the hermetically sealed container at a specific frequency band.

Problems solved by technology

Such vibration of the hermetically sealed container is a major cause of a compressor noise.

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