Linear compressor and motor fixing structure thereof

Abstract

The invention discloses a linear compressor and a motor fixing structure thereof. The motor fixing structure comprises an inner stator, an air cylinder and a flange, and the inner stator is clamped on the front flange through a clamping portion. By the motor fixing structure, the clamping portion arranged on the front flange functions in positioning the inner stator to enable the inner stator to be fixed without dependence on the air cylinder, when the inner stator is fixed, the air cylinder and the inner stator are spaced by a certain distance without being in close contact, and accordingly loss generated by the magnetic field through the air cylinder is reduced; all the front flange, the air cylinder and the boss are made of non-magnetic materials, so that magnetic loss can be reduced greatly integrally.

Description

technical field [0001] The invention relates to a linear compressor, in particular to the motor part of the linear compressor, especially the fixation of the stator relative to the front flange. Background technique [0002] A linear compressor is a device that uses a linear motor to convert electrical energy into a linear driving force, drives the piston to achieve linear reciprocating motion, and then compresses refrigerant or other media to do work to realize the function of the compressor. as attached figure 1 As shown, a linear compressor generally includes: a casing 1 (the bottom of the casing usually contains lubricating oil), a linear motor (including an outer stator body 2, an inner stator 3, and a winding skeleton with coils - not shown in the figure), The front flange 4, the mover 7 under the action of the driving force of the linear motor, the reciprocating motion of the piston 5 after being driven by the mover 7 to perform work, and the cylinder 6 that cooperat...

AI Technical Summary

Problems solved by technology

However, this structure requires a longer cylinder size

However, since the cylinders are all made of materials such as cast iron with strong magnetic conductivity, when they are in close contact with the inner stator 3, when there is a magnetic field flowing inside the inner stator, part of the magnetic field will flow through the cylinder 6, causing unnecessary magnetic shock of the cylinder 6. losses, thereby reducing motor efficiency

But for the structure that the cylinder 6 is not long enough, that is, the structure that the cylinder 6 does not need to penetrate the stator body, or the structure that does not require the interference fit between the stator and the cylinder, the existing linear compressor structure obviously cannot realize an effective fixed motor

In addition, it is mentioned in the prior art that if the motor is fixed with bolts, the stator needs to be positioned first if the bolts are to be used to fix it accurately. However, there is no positioning part in the existing compressor structure, and bolt holes cannot be drilled for connection.

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