Device for regulating the delivery of rotary compressors

Details Device for regulating the delivery of rotary compressors Device for regulating the delivery of rotary compressors

1985-01-10

1986-02-11

Gluck, Richard E.

Pumps

With condition responsive pumped fluid control

Inlet throttle or stop valve

137527, 1376142, F04B 4902

Patent

active

045696365

ABSTRACT:
A device for regulating the delivery of rotary compressors, such as screw-type compressors with oil injection, comprises a regulating valve for varying the cross-sectional area of a suction pipe and a non-return valve which closes said suction pipe. The two valves are disposed one behind the other in the flow direction within a casing incorporating a suction pipe. In order to provide a low resistance to flow and to simplify the construction, both valves are in the form of flap valves with the flap of the non-return valve arranged to close a valve seat provided in the casing and being pivotable against a resetting force about an axis extending outside the cross-sectional area of the valve seat.

REFERENCES:
patent: 1187535 (1916-06-01), LaPorte
patent: 1507001 (1924-09-01), Robertson
patent: 2991002 (1961-07-01), Quertier
patent: 3463189 (1969-08-01), Fitzpatrick
patent: 4067356 (1978-01-01), Kreuz
patent: 4089623 (1978-05-01), Hofmann
patent: 4406588 (1983-09-01), Hofmann

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