Scroll vacuum pump.

CFD Simulation of a Dry Scroll Vacuum Pump Including Leakage Flows

One challenge for the numerical simulation of a dry scroll vacuum pump is the discretization of the chamber volume, which changes with time. In addition, the flow characteristics are very complex including the leakage flow caused by radial and axial gaps between the rotors and the housing. For engineers and designers it is imperative to understand the influence of such leakage flows on the effi...

Vacuum Gauge to Vacuum Pump Valve

Research on the Discharge Port of Scroll Oil Pump

The working characteristic of scroll oil pump and the propeny of medium oil are described in this paper, the leakage of oil IS analysed, and the mathemaucal model is set up for scroll o1l pump. The effects of the discharge port on the pressure of the working pocket, the oil d1splaccment and the requ1red power are obtained according to the results of calculation and e>;periment. The optimal desi...

Emergency power source for an ion vacuum pump.

This note describes a simple high-voltage dc generator which serves as an emergency power source for an ion vacuum pump during power interruptions, or failure of the main supply.

MEMS Micro-vacuum Pump for Portable Gas Analyzers

There are many advantages to miniaturizing systems for chemical and biological analysis. Recent interest in this area has led to the cre ation of several research programs, including a Micro Gas Analyzer (MGA) project at MIT. The goal of this project is to develop an inexpensive, portable, real-time, and low-power approach for detect ing chemical and biological agents. Elements entering the MGA...