Electric machine fixation structure of linear compressor

Abstract

The invention provides a linear motor fixed structure of a linear compressor; the structure comprises a cylinder, a piston, an inner stator, an outer stator, a permanent magnet, a supporting projection that supports one end of the outer stator and projects out of one surface of a main frame and a motor cover that supports the other end of the outer stator and is fixed on the main frame, wherein, the number of the supporting projection that projects out of one surface of the main frame is one or more. The invention has the effects that: in the linear motor fixed structure of the linear compressor, when the other end on the axial direction of a coil group in the outer stator is supported on the motor cover, at least one supporting projection is supported in a straight-line-part section that is free from a coil winding in the coil group, so that the centralized gravity acts on a contact surface, thereby obtaining a linear motor that carries out the fixed linear compressor much more stably. The invention not only can improve the operation reliability of the motor, but also can simplify the production process and improve the production since the coil group is not provided with a fixed groove.

Description

technical field [0001] The invention relates to a linear motor structure, in particular to a motor fixing structure of a linear compressor. Background technique [0002] figure 1 is a partial side sectional view of a prior art linear compressor, figure 2 as well as image 3 It is a partially exploded perspective view and an exploded cross-sectional view of a linear motor fixing structure of a linear compressor in the prior art. [0003] Prior art linear compressors such as figure 1 As shown, one end of the piston 4 is inserted into the inner side of the cylinder 2, and a compression space P is formed inside. The piston 4 performs linear reciprocating motion when the linear motor 10 is started, sucks the refrigerant into the compression space P, compresses it, and then discharges it. While one end of the cylinder 2 is fixed on the main frame 22 , the linear motor 10 is supported on the main frame 22 by a motor cover 24 . [0004] The cylinder 2, the piston 4 and the lin...

AI Technical Summary

Problems solved by technology

[0014] However, in the prior art linear compressor fixing structure, when the outer stator 14 provided with the coil group 14b fixed around the coil winding body 14a is arranged between the main body frame 22 and the motor cover 24, the coil group In the state where the fixing protrusion 22a formed on one side 22A of the main body frame is inserted into the fixing groove 14h formed in the central part of one end of the coil group 14b, one end of the coil group 14b is supported on the main body frame 22, thereby being fixed. The slot straddles the straight section section a and the installation slot section b provided in one end of the coil group 14b. When the outer stator 14 is installed on the main body frame 22 and the motor cover 24, the assembly force only acts on the The linear part section a in the coil group 14b, so the lifting assembly force is limited, thereby reducing the reliability of operation

In order to provide the fixing groove 14h on the coil group, it is necessary to laminate the laminated structures in which the groove is formed at one end in the circumferential direction, so the manufacturing process is very complicated.

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