小型线性压缩机静压气体轴承的模拟分析

Simulation Analysis of Hydrostatic Gas Bearing of Small Linear Compressor

线性压缩机的工作特点使得其适合使用静压气体轴承技术来提供压缩活塞所需的径向支撑力,以改善气缸和活塞的自润滑特性,提高压缩机的性能及寿命。本文利用有限体积分析方法,针对静态和动态压力出口条件,研究了小型静压气体轴承结构参数和进气压力对轴承承载力及耗气量的影响,给出了最佳的几何参数,并模拟分析了静压气体轴承运行对线性压缩机产生的影响,为静压气体轴承的设计提供了优化方向。

The working characteristics of the linear compressor make it very suitable for the use of hydrostatic gas bearing technology to provide the radial support force required by compression piston to improve the self-lubricating characteristics between the cylinder and piston.In this paper,the finite volume analysis method is used to study the effects of small hydrostatic gas bearing structure parameters and intake pressure on its bearing capacity and gas consumption for static and dynamic pressure outlet conditions,the best geometric parameters are given,and the effect of the operation of the hydrostatic pressure gas bearing on the linear compressor was simulated and analyzed.It provides the optimization direction for the design of hydrostatic gas bearings.