Method for controlling temperature in a refrigerator when a temp

Details Method for controlling temperature in a refrigerator when a temp Method for controlling temperature in a refrigerator when a temp

1997-08-22

1998-12-22

Wayner, William E.

Automatic temperature and humidity regulation

Ventilator type

Electrically actuated

62209, 236 78B, 374115, G01K 300, F24F 700

Patent

active

058509690

ABSTRACT:
A method for controlling the temperature of a compartment of a refrigerator, the compartment utilizing at least two spaced apart temperature sensors, such that, even when one of the sensors malfunctions, the compartment is cooled without any degradation of efficiency. The sensors detect respective temperatures in the compartment. While the sensors are operating normally, the detected temperatures are stored. In the event one of the sensors malfunctions, an abnormal average temperature is calculated using: (i) previously stored temperatures of the abnormally operating sensor, and (ii) a temperature recently detected by the normally operating sensor. Thereafter, the calculated abnormal average temperature is compared with a reference temperature to control the operation of a fan.

REFERENCES:
patent: 4122720 (1978-10-01), Podl
patent: 4355760 (1982-10-01), Ruby
patent: 5407129 (1995-04-01), Carey et al.

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