Cooling and lubrication system for a vacuum pump

Details Cooling and lubrication system for a vacuum pump Cooling and lubrication system for a vacuum pump

1990-08-13

1991-07-02

Smith, Leonard E.

Rotary expansible chamber devices

With signal, indicator or transparent inspection means

418 84, 418 88, 418 97, 418DIG1, F04C 2902, F04C 2904

Patent

active

050282204

ABSTRACT:
A fluid management system for a rotary screw vacuum pump is provided in which lubricating fluid is transmitted to the vacuum pump from an oil supply reservoir while a coolant fluid is circulated to the vacuum pump from a fluid reservoir containing a supply of liquid coolant. After passing through the rotary compressor and lubricating the compressor one time, the lubricant merges with the coolant and the mixture is stored in the fluid reservoir to be reused as a coolant for the rotary screw compressor. The fluid reservoir containing the fluid is provided with a controller that senses the quantity of liquid within the fluid reservoir and provides additional liquid to the reservoir when the liquid levels falls below a predetermined magnitude. In addition, the controller drains liquid from the fluid reservoir when the liquid level within the reservoir exceeds a predetermined magnitude. A water soluble lubricant is used in association with water as a coolant in a preferred embodiment of the present invention.

REFERENCES:
patent: 2470655 (1949-05-01), Shaw
patent: 2937807 (1960-05-01), Lorenz
patent: 2938664 (1960-05-01), Noller
patent: 3073514 (1963-01-01), Bailey
patent: 3556697 (1971-01-01), Webb
patent: 3876345 (1975-04-01), Froede
patent: 4035114 (1977-07-01), Sato
patent: 4173440 (1979-11-01), Libis
patent: 4394113 (1983-07-01), Bammert

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