F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
230/34, 230/39,
F04C 15/00 (2006.01)
Patent
CA 1202936
MICRO-PROCESSOR CONTROL OF A MOVEABLE SLIDE STOP AND A MOVEABLE SLIDE VALVE IN A HELICAL SCREW ROTARY COMPRESSOR Abstract of the Disclosure An axial flow helical screw type compressor has a slide valve member and a slide stop member mounted end to end beneath the intermeshing rotors such that the slide valve member controls communication between the work chamber defined by the rotors and the casing to the outlet port and slide stop member and the valve member together control the working fluid inlet to the bores of the rotors, the slide valve member and the slide stop being independently movable. Control means for the slide valve member and slide stop include position sensing means for these two members, inlet and outlet pressure sensing means, and means for feeding these inputs into programmable circuitry to control the positions of the slide member and slide stop. - 1 -
454368
Murphy David A.
Spellar Peter C.
Fetherstonhaugh & Co.
Frick Company
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