Compressor transmission vent system

Details Compressor transmission vent system Compressor transmission vent system

1996-06-20

1997-11-11

Thorpe, Timothy

Pumps

Motor driven

Electric or magnetic motor

29888024, F04B 1703

Patent

active

056856997

ABSTRACT:
An improved transmission vent system for centrifugal compressors comprises a motor compartment, a transmission chamber, an impeller for moving refrigerant in a downstream direction, a guide vane located upstream of the impeller, and a vent pipe connected between the transmission chamber and an area upstream of the impeller and downstream of the guide vane. Refrigerant can be vented from transmission chamber to the area upstream of the impeller and downstream of the guide vane in order to eliminate the pressure differential between the transmission chamber and the compressor suction area upstream of the impeller during start-up.

REFERENCES:
patent: 3163999 (1965-01-01), Ditzler et al.
patent: 3650634 (1972-03-01), Osborne et al.
patent: 3853433 (1974-12-01), Roberts et al.
patent: 4997340 (1991-03-01), Zinsmeyer et al.
patent: 5525039 (1996-06-01), Sieghartner
patent: 5549459 (1996-08-01), Nixon

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