Refrigeration – Automatic control – Of external fluid or means
Patent
1995-10-02
1997-08-19
Tanner, Harry B.
Refrigeration
Automatic control
Of external fluid or means
62186, 62158, F25D 1706
Patent
active
056576382
ABSTRACT:
An apparatus for driving a fan as part of a refrigerator is disclosed. The refrigerator has a compartment, a compressor, an evaporator and a condenser. A temperature sensor is positioned in association with the compartment and outputs a sensed temperature signal as a function of the temperature in the compartment. The apparatus includes a reference circuit which provides a desired temperature signal representative of a desired temperature. A comparator compares the desired temperature signal and the sensed temperature signal and generates a cool signal when the compartment temperature is above the desired temperature. A timer times out an elapsed period of time commencing when the cool signal is generated. A motor includes a rotatable assembly in driving relation to the fan. A control circuit controls operation of the motor as a function of the sensed temperature signal and the elapsed period. Related apparatus and methods are also disclosed.
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Buxton, "Solid State Circuits Simplify Temperature Sensing and Control," pp. S5-S8.
Bessler Warren F.
Erdman David M.
General Electric Company
Krisher, Jr. Ralph E.
Tanner Harry B.
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