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Air hydrostatic bearing of machine making free piston type reciprocating motion

A reciprocating motion, gas static pressure technology, applied in the direction of bearings, shafts and bearings, mechanical equipment, etc., can solve the problems of increased gas consumption of gas static pressure bearings and reduced mechanical efficiency of free-piston reciprocating motion, so as to improve efficiency and load bearing capacity. The effect of improving capacity and rigidity and reducing air consumption

Active Publication Date: 2014-07-23
CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing gas static pressure bearings, the high pressure gas needs to go through complex mesh gas flow channels and tiny gas throttling structures when entering the gap, which will lead to the increase of gas consumption of gas static pressure bearings and the free piston reciprocating Reduced efficiency of moving machinery

Method used

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  • Air hydrostatic bearing of machine making free piston type reciprocating motion
  • Air hydrostatic bearing of machine making free piston type reciprocating motion
  • Air hydrostatic bearing of machine making free piston type reciprocating motion

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Embodiment Construction

[0020] The present invention is applicable to various free-piston reciprocating machines. The present invention will be further described by taking the free-piston Stirling refrigerator as an example and in conjunction with the accompanying drawings:

[0021] Such as figure 1 As shown, the piston 1 is installed in the cylinder 2, and the linear motor drives the piston to reciprocate along the cylinder wall. According to the thermodynamic cycle law, when the refrigerator is in motion, the gas at the cold end 4 passes through the regenerator, and heat is pumped to the hot end 3 . In this way, the refrigerator achieves the cooling effect and meets the cooling requirements of mechanical parts and electronic devices that require deep cooling.

[0022] Such as figure 1 and figure 2 The shown aerostatic bearing for a free-piston reciprocating machine includes a piston 1 , a cylinder 2 , an ejector 5 , a compression chamber 6 and an air storage tank 10 . The piston 1 is installed...

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Abstract

The invention relates to an air hydrostatic bearing of a machine making free piston type reciprocating motion. The air hydrostatic bearing comprises a piston, a cylinder, a discharger, a compressing cavity and an air storage groove, wherein a first orifice, a first annular shallow groove and a first pressure equalizing shallow groove are formed in the outer side of the outer circumference of the outer sleeve of the piston along the circumferential direction; the first pressure equalizing shallow groove is communicated with the first annular shallow groove at two sides of the first orifice; the first orifice is communicated with the first annular shallow groove through the first pressure equalizing shallow groove; double-row second orifices are formed in the outer side of the outer circumference of the inner sleeve of the piston along the circumferential direction; a second annular shallow groove and a second pressure equalizing shallow groove are formed in the inner side of the inner circumference; the second pressure equalizing shallow groove is communicated with the second annular shallow groove at two sides of the second orifices; and the second orifices are communicated with the second annular shallow groove through the second pressure equalizing shallow groove. The bearing capacity and air film rigidity of the air hydrostatic bearing are improved, the service life of the piston is prolonged, the air consumption is lowered and the efficiency of the machine making free piston type reciprocating motion is increased.

Description

technical field [0001] The invention relates to the technical field of gas static pressure bearings, in particular to a gas static pressure bearing used in a free-piston type reciprocating motion machine. Background technique [0002] The gas static pressure bearing is a key part of the free piston, which reduces the friction loss between the piston and the cylinder by means of gas lubrication, and prolongs the service life of the piston. The performance of the gas static pressure bearing will directly affect the length of the service life of the piston, and the carrying capacity and the stiffness of the air film are important indicators to judge the performance of the gas static pressure bearing. The load capacity and gas film stiffness of gas hydrostatic bearings are closely related to the bearing structure and gas throttling method. [0003] At present, the common gas throttling methods of gas static pressure bearings include small hole throttling type, porous type and s...

Claims

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Application Information

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IPC IPC(8): F16C32/06
Inventor 孔中科王波叶重王飞王建中寇翠翠
Owner CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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