Household refrigerator defrost system

Details Household refrigerator defrost system Household refrigerator defrost system

1981-01-19

1982-11-16

Makay, Albert J.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62234, F25D 2106

Patent

active

043589332

ABSTRACT:
A refrigerator including a compressor, an evaporator and a condenser with a temperature control to energize and de-energize the compressor. There is an electrical defrost heater for periodically warming the evaporator to defrost temperatures which is energized and de-energized by an electrical motor-driven defrost control timer having a predetermined period of run time between initiation of each successive defrost cycle. The defrost control timer is energized to run only when the compressor is energized and the defrost control timer is delayed in running for a period of time each time the compressor is energized.

REFERENCES:
patent: 3812306 (1974-05-01), Harris
patent: 4056948 (1977-11-01), Goodhouse
patent: 4156350 (1979-05-01), Elliott et al.
patent: 4197717 (1980-04-01), Schumacher

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