Linear compressor

Abstract

A linear compressor having a stator comprising a coil body for generating a magnetic field when electric current is supplied to the stator, and outer cores disposed on the coil body while surrounding the coil body such that a magnetic flux passes therethrough. The coil body is formed in the shape of a hollow cylinder. The coil body is made of wound electric wires. The coil body is provided with a form-maintaining member for maintaining the shape of the coil body, by which the outer cores are supported. An impregnant, such as varnish, is used as the form-maintaining member. The impregnant is penetrated into gaps between electric wires, and is then solidified so that the shape of the coil body is firmly maintained.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims the benefit of Korean Patent Application No. 2004-18069, filed on Mar. 17, 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 having a stator for moving a moving member connected with a piston forward and backward. [0004] 2. Description of the Related Art [0005] Generally, a compressor is used to compress a coolant and discharge the compressed coolant to the outside in a refrigerating cycle where compression, condensation, expansion, and evaporation processes are consecutively carried out with the coolant as a medium. A linear compressor is used to compress a coolant by means of a linear motor that is capable of carrying out a rectilinear movement, by which a piston is linearly reciprocated...

AI Technical Summary

Benefits of technology

"The invention provides a linear compressor that can prevent deformation of the stator due to heat generated during operation. The compressor includes a stator with a coil body, a core, and a form-maintaining member. The form-maintaining member is an impregnant penetrated between the electric wires of the coil body. The coil body and the core are fixedly attached with an injection-molded member filled between them. The coil body is formed in the shape of a hollow cylinder, and the core comprises a plurality of cores spaced apart from each other along the outer circumference of the coil body. Each core is provided at the side thereof opposite to the moving member with a pair of teeth parts, and the injection-molded member is filled in a separated space defined between the teeth parts. The compressor also includes a protection member disposed between the core body and the coil for protecting the coil body. The protection member is made of paper."

Problems solved by technology

As a result, the outer cores may deviate from their originally mounted positions when the bobbin is deformed due to heat generated during operation of the compressor.

Consequently, gaps between the moving member and the outer cores may not be constantly maintained, whereby the entire efficiency of the linear motor is decreased.

Furthermore, the compressor may be damaged when the moving member directly collides with the outer cores.

Images