Linear compressor

Abstract

The invention relates to a linear compressor, and specifically provides a linear compressor comprising an outer stator, an inner stator arranged in the radial inner side of the outer stator at a preset gap, and a front flange arranged on the axial side of the outer stator; specially, the inner stator is provided with a coil; the axial length of the outer stator is bigger than that of the inner stator, thus reducing or preventing magnetic field, generated by the coil, from leaking outside the inner and outer stator; the inner periphery, close to the end portion of the front flange of the linear compressor, of the outer stator is provided with a groove. In the axial direction of the linear compressor, the outer stator is bigger in length than the inner stator, thus greatly reducing or preventing magnetic field, generated by the coil, from leaking outside the inner and outer stator, improving magnetic field density in the inner and outer stators, and obviously improving linear compressor efficiency.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a linear compressor. Background technique [0002] like figure 1 As shown, the existing linear compressor generally works through the electromagnetic resonance of the linear motor, which is different from the conventional compressor driven by the mechanical connection through the rotary motor, and the efficiency of the linear compressor is higher than that of the traditional crank structure compressor. The motor of the linear compressor may include an inner stator 30 , an outer stator 20 and a coil 31 arranged coaxially, wherein the coil 31 may be placed in the inner stator 30 . The compression assembly of the existing linear compressor may include a permanent magnet 51, a compression spring, a cylinder 40, a piston, and the like. When the coil 31 of the linear compressor is supplied with alternating current, an alternating magnetic field is generated between the inner stator 30 and ...

AI Technical Summary

Problems solved by technology

[0003] During the working process of the existing linear compressor, the magnetic field generated by the coil 31 is easy to leak to the casing 10 or other components, which significantly reduces the operating efficiency of the compressor

Specifically, among the magnetic force lines 311 generated by the coil 31, a part of the magnetic force lines 311 will flow to the casing 10, and a part of the magnetic force lines 311 will flow to the metal cylinder 40 and the cylinder head 41, thereby generating iron loss on the casing 10, the cylinder 40 and the cylinder head 41, Affect linear compressor efficiency

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