Lift valve for rotary screw compressors

Details Lift valve for rotary screw compressors Lift valve for rotary screw compressors

1987-01-28

1988-04-12

Freeh, William L.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

418159, F01C 116, F04B 4900

Patent

active

047370823

ABSTRACT:
When regulating the capacity of a rotary screw compressor in a refrigeration and heating pump system and when varying the built-in volume therein, lift valves are used which operate instantaneously and are either open or closed. In order to ensure sufficient pressure on the lift valves to effect closing, the wall of the lift valves is shaped with two different diameters and a sharply defined step therebetween. Upon closing, the sharply defined step is influenced by a pressure which is lower than the pressure influencing the end surfaces of the lift valve.

REFERENCES:
patent: 1153973 (1915-09-01), Tacit et al.
patent: 4112766 (1978-09-01), Ragains
patent: 4133510 (1979-01-01), Lorimor
patent: 4238112 (1980-12-01), Derozier
patent: 4257442 (1981-03-01), Claycomb

Affiliated with

Also associated with

Rating

Lift valve for rotary screw compressors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lift valve for rotary screw compressors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lift valve for rotary screw compressors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1426601