Herring-bone grooved gas journal bearing for a laser scanner functioning as a viscous vacuum pump

被引：0
|
作者：
Yoshimoto, Shigeka
Anno, Yoshiro
Ito, Yukio
Kawabata, Nobuyoshi
机构：
来源：
Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C | 1993年 / 59卷 / 562期
关键词：
Flow of fluids - Journal bearings - Lasers - Mirrors - Viscous flow;
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学科分类号：
摘要：
This paper treats the pumping characteristics of a herring-bone grooved gas journal bearing when this bearing is used as a viscous vacuum pump in order to reduce windage power losses of a laser scanner mirror. In the theoretical analysis, the Reynolds equation for a herring-bone gas journal is derived, considering the effect of slip flow. The optimum design method for a vacuum pump is discussed by showing the influences of various design parameters on the pumping characteristics. It is consequently shown that this type of bearing functions well as a vacuum pump and is very useful for the reduction of windage power losses of the laser scanner mirror.
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页码：1836 / 1841
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