Document Type and Number:
Japanese Patent JPH0158357
Kind Code:
B2
Abstract:
A closed loop control is provided to control pressure and/or temperature in a system where one or more liquid ring vacuum pumps evacuate a recipient. The suction ability of the liquid ring vacuum pumps is controlled either by speed control, operating water temperature, switching-on and -off of pumps or bypass-air. Simultaneous control of all operating characteristics is achieved with a programmable electronic controller.
Inventors:
HAINTSU BOON
UAANAA FUINKU
RAINHOORUTO RYUUMAN
UAANAA FUINKU
RAINHOORUTO RYUUMAN
Application Number:
JP11551485A
Publication Date:
December 11, 1989
Filing Date:
May 30, 1985
Export Citation:
Assignee:
ITT
International Classes:
F04C25/02; F04C19/00; F04C28/00
Next Patent: JPH0158358