초록 ▼

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 temperature set point. Th

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 temperature 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 decremented 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.

대표청구항 ▼

A temperature control system for a heating or cooling device, comprising: a temperature sensor for monitoring the temperature of a space; means for repeatedly operating the device in cycles, each cycle having an on portion during which the device is energized and an off portion during which the devi

A temperature control system for a heating or cooling device, comprising: a temperature sensor for monitoring the temperature of a space; means for repeatedly operating the device in cycles, each cycle having an on portion during which the device is energized and an off portion during which the device is deenergized; means coupled to the temperature sensor for controlling the duration of one of the repeated portions of the cycle in accordance with the sensed temperature; measurement means for measuring the temperature controlled portions of the cycle; means operative during the normal cyclic operation of the device for varying the duration of the repeated other portion of the cycle in response to the measurement of at least one of the temperature controlled portions of the cycle.