Method of operating a claw-type vacuum pump and a claw-type vacuum pump suitable for carrying out the method
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United States of America Patent
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Aug 26, 1997
Issued Date -
N/A
app pub date -
Aug 9, 1996
filing date -
Oct 2, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of operating a claw-type vacuum pump with two or more stages, each of which has a suction chamber with a pair of claw rotors and end-located suction and discharge ports. To avoid the possibility of liquids affecting operation of the pump, the invention proposes that the pump is operated without internal compression and that the gases emerging from at least one stage are cooled.
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