Pumps – With condition responsive pumped fluid control – Reversibly driven pump having bypass active in either flow...
Patent
1991-12-20
1993-02-16
Bertsch, Richard A.
Pumps
With condition responsive pumped fluid control
Reversibly driven pump having bypass active in either flow...
417292, F04B 4900, F04B 4908
Patent
active
051866137
ABSTRACT:
A low side scroll compressor is protected from both the potentially damaging effects of improper electrical hookup and the development of high discharge temperatures by the disposition of a valve member in a passage which communicates between the suction pressure portion and a discharge pressure portion of the compressor. The valve operates to permit the flow of gas from the suction to the discharge pressure portion of the compressor through a protective passage when the compressor is caused to run backwards due to miswiring so as to avert damage to the scroll members. The valve permits the flow of gas from the discharge to the suction pressure portion of the compressor through the protective passage when the temperature of the discharge gas produced by the compressor is caused to exceed a predetermined temperature. The resulting flow causes the compressor motor to de-energize.
REFERENCES:
patent: 4560330 (1985-12-01), Murayama et al.
patent: 4820130 (1989-04-01), Eber et al.
patent: 4828462 (1989-05-01), McBurnett
patent: 4840545 (1989-06-01), Moilanen
patent: 4934910 (1990-06-01), Utter
patent: 5090880 (1992-02-01), Mashimo
Harrison Mark W.
Kotlarek Peter A.
Moilanen John R.
American Standard Inc.
Basichas Alfred
Beres William J.
Bertsch Richard A.
Ferguson Peter D.
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