JPS57148131A - Air conditioner - Google Patents

Abstract

PURPOSE:To enable to keep the interior of a room at comfortable condition at all times during the 24 hours of a day by a method wherein the set temperature is changed at every given time of the day by providing the means for outputting temperature controlling signal at every given time of the day as the standard signal in response to the change of atmospheric temperature all through the day at predetermined time of the day. CONSTITUTION:At the start of operation, firstly the memory 2 pattern to the first memorized temperature is inputted to a comparator 3 in order to compare with the set temperature set with a central temperature setting unit 1. At this time, if the both values in the memory pattern and of the set temperature are not equal to each other, secondly the memory pattern to the second memorized temperature is inputted to the comparator 3 in order to compare with the set temperature in the same manner as done at the memory pattern to the first memorized temperature and the repeated comparison operation of the both values follows as many times as necessary for finding equal values. When equal both values are found after the repeated comparison operation, the controlling temperature signal at the current time is applied from a pattern setting unit 4, at every clock pulse signal input from a clock signal unit 5, to a comparator 7 in order to compare with the room temperature signal from a temperature detecting unit 6. A controlling circuit 8 ON-OFF controls the cooling operation by driving a compressor 9 in accordance with the result of said comparison of the controlling temperature signal with the room temperature signal.