Sensor for pressure controlled switching valve for refrigeration

Details Sensor for pressure controlled switching valve for refrigeration Sensor for pressure controlled switching valve for refrigeration

1993-04-08

1994-02-15

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62524, 200 82E, 200 83A, F25B 500, H01H 3540

Patent

active

052856526

ABSTRACT:
A refrigerant flow switching device for alternately conveying refrigerant from a high pressure and a low pressure evaporator to a compressor of a refrigeration system, and a refrigerator using such a refrigeration system, includes a refrigerant flow switching valve for alternately conveying refrigerant from the high and low pressure evaporators to the compressor. Said switching valve is controlled by a pressure switch that utilizes the pressure difference between the refrigerant from the high pressure evaporator and that from the low pressure evaporator to cyclically open or close a switch assembly, moving the switch between low and high pressure positions.

REFERENCES:
patent: 2182318 (1939-12-01), Newill
patent: 3550613 (1970-12-01), Barber
patent: 4680436 (1987-07-01), Brausfeld et al.
patent: 5156016 (1992-10-01), Day
patent: 5184473 (1993-02-01), Day
U.S. patent application Ser. No. 07/612,290, filed Nov. 9, 1990, allowed Feb. 3, 1993, Batch No. K08 now U.S. Pat. No. 5,228,308.

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