Linear compressor

Abstract

The invention provides a linear compressor comprising an inner stator and an outer stator which are cylindrical. The outer stator is disposed on the outer side of the inner stator, a flange is arranged at one end of the inner stator, an air cylinder is fixed on the flange, a cylinder body of the air cylinder extends into the inner stator, a piston is arranged in the air cylinder, a stator pressing plate is arranged at the other end of the inner stator, a spring retaining plate is arranged oppositely to the stator pressing plate, a rotor frame connected with the piston is arranged between the inner stator and the outer stator and positioned between the spring retaining plate and the stator pressing plate, the linear compressor further comprises a fixing mechanism, and the fixing mechanism penetrates the rotor frame and the inner stator respectively to fix the spring retaining plate, the stator pressing plate and the flange together. Consequently, needs of the whole linear compressor can be guaranteed, and firmness in fixing of parts which are coaxial can can be guaranteed, so that coaxiality of the linear compressor is guaranteed, and improving of reliability of the linear compressor is facilitated.

Description

technical field [0001] The present invention relates to a linear compressor. Background technique [0002] Such as figure 1 As shown, the linear compressor generally has a cylindrical casing 1, and lubricating oil is contained at the bottom of the casing 1. A cylindrical casing 12 is accommodated in the casing 1 , and an outer stator 2 , an inner stator 3 , a cylinder 7 and a piston 6 are accommodated in the casing 12 . Wherein, the outer stator 2 and the inner stator 3 are both cylindrical, and the outer stator 2 is arranged close to the inner surface of the housing 12, and the inner stator 3 is placed in the outer stator 2, and there is a gap between the two. A magnet as a mover and a mover frame 8 for fixing the magnet are arranged in the interval. The cylinder 7 is cylindrical as a whole, and a flange 71 extending radially outward is formed on the outer peripheral surface of the cylinder 7 at the right end of the cylinder, and a flange 5 is arranged on the outer perip...

AI Technical Summary

Problems solved by technology

With this matching method, since the cylinder 7 is usually made of magnetically permeable cast iron and other materials, when a magnetic field flows through the inner stator 3, part of the magnetic field will flow through the cylinder 7, which will easily cause magnetic loss, resulting in the efficiency of the linear compressor. reduce

However, if the axial length of the cylinder body of the cylinder 7 is smaller than the axial length of the inner stator 3, it is easy to reduce the stability of the cooperation between the inner stator 3 and the cylinder 7, and even reduce the coaxiality of the linear compressor.

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