Linear compressor

Abstract

The embodiment of the invention provides a linear compressor. The linear compressor is specifically characterized in that a piston shaft is fixedly arranged inside a linear motor and can slide linearly in the axial direction; one end of the piston shaft penetrates out of the linear motor and is connected with one end of a piston; a resonance oscillation spring is arranged outside the piston shaftin a sleeving manner and located inside the linear motor; an air cylinder is flexibly connected with the resonance oscillation spring; the other end of the piston shaft is inserted into the air cylinder, so that a compression space is formed; and a mover component of the linear motor is fixedly connected with the piston. According to the linear compressor, the resonance oscillation spring is placed inside the linear motor, and the boundary dimension of the linear compressor can be reduced; in addition, the air cylinder is arranged to be flexibly connected with the linear motor, the air cylinder can move slightly in the radial direction of the air cylinder, and the requirement of external arrangement of the air cylinder for the assembling coaxial precision can be lowered; and meanwhile, thepistons shaft is arranged, the piston and the resonance oscillation spring are located through the piston shaft, the assembling coaxial precision can be improved, and the risk that the compressor isstuck in the cylinder is reduced.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of compressors, in particular to a linear compressor. Background technique [0002] The linear compressor driven by a linear motor reduces the movement conversion device and greatly improves the efficiency of the compressor. It has the advantages of compact structure, light weight, no oil or less lubricating oil, and excellent variable capacity characteristics. It is becoming more and more popular. The application of high-efficiency compressors for small refrigeration devices has become a major development direction. [0003] In 1992, Beale and Redlich in the United States proposed a moving magnet linear oscillation motor with a Redlich type structure. The moving magnet linear oscillation motor with this structure installs a magnetic material on the circumference of the excitation coil to form a circle concentric with the excitation coil. The magnetic circuit structure of the cylindric...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a linear compressor, which is used to solve the problem that the linear compressor in the prior art has a large external dimension of the compressor after the cylinder and the piston are placed outside, takes up a large space, and the compressor is prone to cylinder jamming.

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