Device for controlling oil injection to a screw compressor

Details Device for controlling oil injection to a screw compressor Device for controlling oil injection to a screw compressor

1977-03-02

1978-07-04

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

251 612, F16K 31365

Patent

active

040984877

ABSTRACT:
A device for controlling oil injection to a screw compressor, the device comprising an oil stop valve having a closing element mounted at one end of a valve stem slidably and sealingly received in a bore connecting the valve with a housing divided by a diaphragm mounted on the other end of the valve stem into two chambers, one chamber being connectable to the compressor output and when pressurized, serving to act on the diaphragm to open the valve, and the other chamber communicating with the valve via an axial bore in the valve stem and when pressurized, serving to act on the diaphragm to close the valve, the valve stem in its portion received in the bore having a cross-sectional area approximately equal to the effective sealing surface area of the closing element.

REFERENCES:
patent: 2811167 (1957-10-01), Bott
patent: 3556463 (1971-01-01), Williams
patent: 3874629 (1975-04-01), Fontaine

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