Defrost control method for refrigerator

Details Defrost control method for refrigerator Defrost control method for refrigerator

1992-01-21

1993-08-03

Tanner, Harry B.

Refrigeration

Processes

Defrosting or frost inhibiting

62153, 62155, 62156, F25D 2106

Patent

active

052318443

ABSTRACT:
A refrigerator is defrosted by comparing a sensed temperature in the refrigerator with a predetermined temperature when a defrost start time is reached. If the sensed temperature is too high, a compressor is caused to operate in order to reduce the temperature to the predetermined temperature. Then, the open/closed conditions of the refrigerator doors are sensed, and the defrost heater is activated if the doors are sensed as being closed.

REFERENCES:
patent: 2064396 (1936-12-01), Volpin
patent: 2297370 (1942-09-01), Siedle
patent: 2519700 (1950-08-01), Radcliffe
patent: 4297852 (1981-11-01), Brooks
patent: 4327556 (1982-05-01), Zampini et al.
patent: 4528821 (1985-07-01), Tershak et al.
patent: 4646536 (1987-03-01), Yamada et al.
patent: 4938027 (1990-07-01), Midlang

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