Pumps – With condition responsive pumped fluid control – Plural separate sensing means for a single fluid controller
Patent
1993-04-22
1994-10-04
Koczo, Michael
Pumps
With condition responsive pumped fluid control
Plural separate sensing means for a single fluid controller
417295, 417309, 4182012, F04B 4900
Patent
active
053520980
ABSTRACT:
An apparatus for regulating the fluid throughput of a rotary screw compressor from a full capacity operating condition to a desired predetermined capacity operating condition includes a turn valve or spiral valve which is disposed in fluid communication with a low pressure fluid. A stepping motor positions the turn valve in a predetermined orientation. A position sensing means is operably connected to the turn valve. The position sensing means detects the angular orientation of the turn valve. A pressure sensing means detects a compressor service pressure. An electronic control means directs the stepping motor in a predetermined orientation. The electronic control means is independently operable to regulate the fluid throughput of the rotary screw compressor from a full capacity operating condition to a predetermined capacity operating condition in response to the first pressure sensing means.
REFERENCES:
patent: 3874828 (1975-04-01), Herschler et al.
patent: 3961862 (1976-06-01), Edstrom et al.
patent: 4052135 (1977-10-01), Shoop et al.
patent: 4519748 (1985-05-01), Murphy
patent: 4678406 (1987-07-01), Pillis et al.
patent: 5054995 (1991-10-01), Haseley et al.
patent: 5183395 (1993-02-01), Langouet
Genco, Jr. Victor M.
Ingersoll-Rand Company
Kocharov Michael I.
Koczo Michael
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