Linear compressor

Abstract

The invention provides a linear compressor, which comprises an inner stator, an outer stator and a front flange disc, wherein the outer stator is formed by at least one silicon steel sheet; one end, contacted with the front flange disc, of each silicon steel sheet is provided with an extension branch end; the extension branch ends form a positioning ring; the front flange disc is accommodated in the positioning ring; and the front flange disc and the inner wall of the positioning ring are embedded and fixed via a groove and a bulge. The inner wall of the positioning ring has a groove structure, the axial side wall of the front flange disc has a convex structure, and the groove structure is matched with the convex structure. The outer stator can be effectively positioned and limited, the circular degree can be ensured, the outer stator can be fixed on the front flange disc made of any material, and high reliability is ensured; and via the matched production technology, the production efficiency can be greatly improved, and production stability is ensured.

Description

technical field [0001] The invention relates to a linear compressor, in particular to a linear compressor whose outer stator is fitted and fixed. Background technique [0002] The structure of the existing linear compressor is as follows: figure 1 As shown, the linear compressor is an axisymmetric structure, including a linear motor, a mover component, a driving piston, and a compressed refrigerant is arranged in the cylinder space. The linear compressor sucks refrigerant gas into the cylinder, and compresses the fluid by linearly reciprocating the piston in the cylinder by the linear driving force of the linear motor, and then discharges the compressed fluid. The linear motor is composed of inner and outer stators 2, coils and annular permanent magnet rings. Since the structure of the linear compressor motor determines that the superimposed silicon steel sheets are different from the existing motors, generally speaking, the inner and outer stators 2 are composed of multipl...

AI Technical Summary

Problems solved by technology

[0005] The purpose of using silicon steel sheets in the motor is to avoid the formation of large spiral currents between the sheets and cause the motor to heat up. Although the welding design welds the stator firmly to the front flange, eddy currents can be formed at the welding position, causing the motor to heat up. The efficiency of the motor is reduced, and the welding process is complicated and the production efficiency is low

In addition, the surface of the weld seam of the workpiece is seriously stained, resulting in dark brown oxides. The workpiece must be cleaned of debris before assembly and production, which is time-consuming; the appearance of pores in the welding reduces the working section of the weld seam and reduces the mechanical strength; and the weld seam Inhomogeneity also brings large shape and position tolerances, resulting in a decrease in the circumference of the stator

[0006] As mentioned above, the problems in the existing technology mainly include: 1. Too many welding points cause too much iron loss; 2. The silicon steel sheet is positioned and fixed by welding or bolt fastening, and its design and assembly are complicated, causing the motor to heat up , the production process is complicated, the production efficiency is low, and the reliability is poor; 3. There are welding sundries, and the structural deformation of the outer stator 2 during the welding process can occur at any time, which will bring about the stability of production and the reliability of the linear compressor. serious problem

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