G - Physics – 05 – D
Patent
G - Physics
05
D
341/28
G05D 23/19 (2006.01) F25B 49/00 (2006.01) F25B 49/02 (2006.01) G05D 23/24 (2006.01)
Patent
CA 1153447
"ADAPTIVE TEMPERATURE CONTROL SYSTEM" ABSTRACT OF THE DISCLOSURE A refrigerator includes a compressor, a condenser fan, and an evaporator fan simultaneously energized by a temperature control system which includes a thermistor located to sense the average temperature of the cabinet air and a potentiometer manually adjustable to a desired temper- ature set point. The on or run time of the compressor and fans is controlled by the thermistor sensed temperature with respect to the set point. The duration of the run time is measured by a resettable counter. The off time is adaptively controlled within a predetermined range which minimizes energy consumption while maintaining good temperature control. An off time counter, which is used to determine the duration of the off cycle, is incremented when the measured run time is less than a desired minimum, is decre- mented when the measured run time is greater than a desired maximum, and maintains the prior off time when the measured run time is within a desired range.
341258
Corporation Whirlpool
Kirby Eades Gale Baker
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