Micro-processor control of moveable slide stop and a moveable sl

Details Micro-processor control of moveable slide stop and a moveable sl Micro-processor control of moveable slide stop and a moveable sl

1984-10-10

1985-05-14

Gluck, Richard E.

Pumps

With condition responsive pumped fluid control

Plural separate sensing means for a single fluid controller

417310, 418201, F01C 116, F04B 4906

Patent

active

045169144

ABSTRACT:
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 the 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.

REFERENCES:
patent: Re29283 (1977-06-01), Shaw
patent: 2519913 (1950-08-01), Lysholm
patent: 3088659 (1963-05-01), Nilsson et al.
patent: 3151806 (1964-10-01), Whitfield
patent: 3314597 (1965-04-01), Schibbye
patent: 3527548 (1970-09-01), Kocher et al.
patent: 3924972 (1975-12-01), Szymaszek
patent: 4080110 (1978-03-01), Szymaszek
patent: 4222716 (1980-09-01), Shaw
patent: 4249866 (1981-02-01), Shaw et al.
Drawing, "SRM", Svenska-Rotor Maskiner AB, Feb. 18, 1981.

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