Linear compressor
First Claim
1. A linear compressor comprises a cylinder supported in a hermetic vessel by a support mechanism, a piston which is supported concentrically with said cylinder such that said piston can move in an axial direction of said cylinder, and which forms a compression chamber between said cylinder and said piston, a spring mechanism for applying an axial force to said piston, and a linear motor portion having a moving member connected to said piston through a holding member and a stator fixed to said cylinder to form a magnetic path between the stator and said moving member, said linear motor portion generating thrust for moving said piston in its axial direction, wherein said linear compressor further comprises aligning means for aligning an axial length center of said stator and an axial length center of said moving member with each other at the time of operation of said linear compressor.
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Accused Products
Abstract
A linear compressor includes a cylinder supported in a hermetic vessel by a support mechanism. A piston is supported concentrically with the cylinder such that the piston can move in an axial direction of the cylinder. A compression chamber is formed between the cylinder and the piston. A linear motor portion has a moving member connected to the piston through a holding member. A stator is fixed to the cylinder to form a magnetic path between the stator and the moving member. The linear motor portion generates thrust for moving the piston in the axial direction. A sensor detects a displacement of the axial length center of the moving member and a DC bias current is fed to the linear motor to align the axial length of the moving member and the axial length of the stator with each other at the time of operation.
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Citations
11 Claims
- 1. A linear compressor comprises a cylinder supported in a hermetic vessel by a support mechanism, a piston which is supported concentrically with said cylinder such that said piston can move in an axial direction of said cylinder, and which forms a compression chamber between said cylinder and said piston, a spring mechanism for applying an axial force to said piston, and a linear motor portion having a moving member connected to said piston through a holding member and a stator fixed to said cylinder to form a magnetic path between the stator and said moving member, said linear motor portion generating thrust for moving said piston in its axial direction, wherein said linear compressor further comprises aligning means for aligning an axial length center of said stator and an axial length center of said moving member with each other at the time of operation of said linear compressor.
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11. A linear compressor comprises a cylinder supported in a hermetic vessel by a support mechanism, a piston which is supported concentrically with said cylinder such that said piston can move in an axial direction of said cylinder, and which forms a compression chamber between said cylinder and said piston, a spring mechanism for applying an axial force to said piston, and a linear motor portion having a moving member connected to said piston through a holding member and a stator fixed to said cylinder to form a magnetic path between the stator and said moving member, said linear motor portion generating thrust for moving said piston in its axial direction, wherein said linear compressor further comprises a position sensor for detecting a displacement of the axial length center of the moving member caused by a gas pressure.
Specification