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Tesla micro-channel throttling type air bearing

An air bearing and micro-channel technology, which is applied to bearings, shafts and bearings, mechanical equipment, etc., can solve problems such as high process difficulty and poor stability, and achieve reliability improvement, reduction of machining difficulty, and particle blockage. less likely effect

Pending Publication Date: 2021-10-15
南通智能感知研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All these technologies and structures have disadvantages such as poor stability and high process difficulty.

Method used

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  • Tesla micro-channel throttling type air bearing
  • Tesla micro-channel throttling type air bearing
  • Tesla micro-channel throttling type air bearing

Examples

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] like Figure 1-8 As shown, this specific embodiment provides a gas bearing for a free-piston Stirling refrigerator, comprising three parts: a piston sleeve 1, a piston 2, and a valve assembly, wherein the piston sleeve 1 and the piston 2 have an interference fit, and the valve assembly 3 It is fastened with the piston 2 by a slotted screw 301.

[0029] Preferably, in this embodiment, the piston 2 is an elongated cylinder made of aluminum alloy or titan...

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Abstract

The invention discloses a Tesla micro-channel throttling type air bearing. The Tesla micro-channel throttling type air bearing comprises a piston sleeve, a piston and a valve assembly, the piston sleeve and the piston are connected in an interference fit mode, the piston and the valve assembly are fixed through a straight screw, high-pressure air storage cavities are formed between the outer wall face of the piston and the inner wall face of the piston sleeve, Tesla micro-channels are distributed in the circumferential direction of the piston, the Tesla micro-channels are in a Y shape, and the Tesla micro-channels comprise a straight channel, an arc channel and an inclined channel. The Tesla micro-channel throttling type air bearing has the following advantages that a adopted Tesla micro-channel throttler has the advantage that local resistance and on-way resistance are in direct proportion to n times of the flow velocity, so that the area of flow passing through the Tesla micro-channel throttler can be much larger than that of a common capillary throttler, however, the resistance effect is much more obvious than that of an accurate throttler composed of a glass capillary tube with the length of 10 mm and the diameter of 60 micrometers, and the machining difficulty is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of gas bearings, in particular to a gas bearing used in a free-piston Stirling refrigerator. Background technique [0002] As a structure that reciprocates in the cylinder, the piston generally moves relative to the cylinder without oil lubrication through a gap of 10 microns due to precision machining. As a high-efficiency and long-life low-temperature refrigerator, the free-piston Stirling refrigerator is mainly limited by two moving parts, namely the displacer and the compression piston. The two moving parts are radially supported to achieve wear-free operation of the moving parts and the cylinder. [0003] There are two forms of supporting the moving parts in the free piston Stirling refrigerator in the prior art, one of which uses a leaf spring to radially support the displacer or the compression piston. The free-piston Stirling refrigerator supported by the plate spring not only increases the axial l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/06
CPCF16C32/0614F16C32/06
Inventor 朱海峰吴亦农蒋珍华汤逸豪陈雷王仕越吴银旭
Owner 南通智能感知研究院
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