Pumps – Condition responsive control of pump drive motor – With condition responsive control of pump fluid valve
Patent
1994-04-15
1995-09-26
Bertsch, Richard A.
Pumps
Condition responsive control of pump drive motor
With condition responsive control of pump fluid valve
417 32, 417 53, 417280, 417291, 417310, F04B 4900
Patent
active
054529891
ABSTRACT:
Protective apparatus in a scroll compressor, in the form of a valve assembly, is operative to prevent compressor damage from reverse direction rotation of the scroll compression mechanism or the development of abnormally high discharge gas temperatures. The valve assembly is disposed in a passage communicating between the suction and discharge pressure portions of the compressor shell and houses a discharge temperature sensor immediately adjacent the location from which discharge gas issues from the compression mechanism. The location of the sensor and its exposure to discharge gas permits the timely sensing of abnormally high discharge temperatures and the shutdown of the compressor upon their occurrence. The valve assembly includes a vent valve which lifts, upon the reverse direction orbital motion of the orbiting scroll member and creation of a pressure less than suction pressure in the discharge pressure portion of the compressor, so as to provide an internal flow path and volume within the compressor against which the compression mechanism can pump where it would otherwise be damaged in pumping against a closed volume.
REFERENCES:
patent: 4560330 (1985-12-01), Murayama et al.
patent: 4820130 (1989-04-01), Eber et al.
patent: 4840545 (1989-06-01), Moilanen
patent: 4998864 (1991-03-01), Muir
patent: 5118260 (1992-06-01), Fraser, Jr.
patent: 5141407 (1992-08-01), Ramsey et al.
patent: 5167491 (1992-12-01), Keller, Jr. et al.
patent: 5169294 (1992-12-01), Barito
patent: 5186613 (1993-02-01), Kotlarek et al.
patent: 5248244 (1993-09-01), Ho et al.
patent: 5290154 (1994-03-01), Kotlarek et al.
Kotlarek Peter A.
Rood Jerry A.
American Standard Inc.
Beres William J.
Bertsch Richard A.
Ferguson Peter D.
O'Driscoll William
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