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Linear compressor supported by three kinds of springs

A technology of linear compressors and coil springs, applied in mechanical equipment, machines/engines, liquid variable capacity machines, etc., can solve the problem of matching the use of cold heads that cannot be used in cryogenic refrigerators, reducing the operating efficiency of linear compressors, and large axial Rigidity and other issues to achieve the effect of reducing size, reducing weight and improving axial stiffness

Inactive Publication Date: 2013-05-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for a linear compressor with a large power or a large mass of the mover, it is difficult to provide a large axial stiffness to achieve high-frequency operation of the compressor by using a single leaf spring support or a mixed support of two leaf springs.
This will inevitably reduce the operating efficiency of the linear compressor, and it cannot even be matched with the cold head of the cryogenic refrigerator

Method used

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  • Linear compressor supported by three kinds of springs
  • Linear compressor supported by three kinds of springs
  • Linear compressor supported by three kinds of springs

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Embodiment Construction

[0024] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] Such as figure 1 As shown, the linear compressor supported by three types of springs in the present invention mainly includes a bracket assembly, a cylinder-piston assembly, a linear motor assembly and a spring assembly. Wherein the bracket assembly includes a housing 1 and a bracket inside the housing 1 , and the bracket is composed of a main bracket 6 and a secondary bracket 5 . The shell 1 is used to seal the machine body, and the secondary bracket 5 and the main bracket 6 are used to fix the spring assembly, the cylinder piston assembly and the linear motor assembly.

[0026] The cylinder-piston assembly includes a cylinder 7, two pistons 25, and a piston shaft 23. The side wall of the cylinder 7 is provided with intake and exhaust holes 8 , and the two ends of the cylinder 7 are provided with annular mounting platforms for fixing...

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Abstract

The invention discloses a linear compressor supported by three kinds of springs. The linear compressor supported by the three kinds of springs comprises a support, a cylinder fixed with the support, two pistons in clearance fit with the inner wall of the cylinder, and two linear motors driving the two pistons to make coaxial and reciprocating motions, wherein the two linear motors are in transmission with the pistons correspondingly and respectively through piston shafts, two end portions of each piston shaft are fixed with the support respectively through a vortex arm plate spring assembly and a linear arm plate spring assembly, the vortex arm plate spring assemblies are close to the pistons, and a cylinder spiral spring used for providing axial elastic force is arranged between an end portion, far away from a corresponding piston, of each piston shaft and the support. Due to the fact that the linear compressor is supported by the three kinds of springs, clearance gap seal and oil-free lubrication technology are guaranteed, and axial rigidity of the springs is effectively improved. For a linear compressor with big rotor quality, high frequency resonance operation is achievable, operating efficiency is improved, and character match between the linear compressor and a cooling head of a low temperature refrigerator is achieved.

Description

technical field [0001] The invention relates to a linear compressor, in particular to a valveless linear compressor for driving a low-temperature refrigerator supported by three types of springs. Background technique [0002] In the low temperature field, the compressor used to drive Stirling refrigerators and pulse tube refrigerators is mainly a valveless linear compressor, which can be divided into three types: moving coil type, moving magnet type and moving iron type according to different moving parts. kind. This linear compressor is directly driven by a linear motor, which eliminates the crank-and-rod mechanism of the traditional reciprocating piston compressor. At the same time, it is coupled with gap sealing and oil-free lubrication technology, making it have high efficiency, long life, small size, low vibration, etc. characteristics, thus gaining wide attention and application. The use of flexible leaf spring (leaf spring) support is the guarantee of gap sealing an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B35/04
Inventor 汪伟伟甘智华张小斌王龙一王博刘东立吴镁刘雨梦朱佳凯宋豫京
Owner ZHEJIANG UNIV
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