Heater controller and heater control method of refrigerator

Details Heater controller and heater control method of refrigerator Heater controller and heater control method of refrigerator

2006-05-23

2006-05-23

Tanner, Harry B. (Department: 3744)

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

C062S275000, C062S389000

Reexamination Certificate

active

07047754

ABSTRACT:
The present invention relates to a heater controller and a heater control method of a refrigerator, and more particularly, to a heater controller and a heater control method of a refrigerator, which control a heater mounted in a refrigerator dispenser. In the present invention, a dispenser of a refrigerator door is provided with a water tank. In order to prevent water in the water tank from being frozen over, the heater is mounted at an outside of the water tank. In addition, by measuring an outer surface temperature of the water tank and then recognizing a water temperature in the water tank based on the outer surface temperature of the water tank, the heater is controlled to be turned on/off based on a range of the water temperature in the water tank. Furthermore, in the present invention, an ambient temperature at a position of the refrigerator is measured, and then, the heater outputs heat energy according to a range of the ambient temperature. Then, the heat energy of the heater is transmitted to the water tank. As a result, the water temperature in the water tank is properly controlled, so that the water tank is prevented from being frozen over.

REFERENCES:
patent: 5269154 (1993-12-01), Schmidt
patent: 5442933 (1995-08-01), Unger
patent: 5737232 (1998-04-01), Wetekamp
patent: 6862891 (2005-03-01), Devos
patent: 6889517 (2005-05-01), Dehli

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