| 摘要 |
<p>PURPOSE:To prevent disagreeable temperature rise at the time when a compressor is OFF by a method wherein the OFF time of the compressor is determined by a charging-discharging circuit and the compressor is brought into operation again after the elapse of the predetermined period of time. CONSTITUTION:The compressor 16 is turned ON through an OR circuit 14 and a transistor 15 by the output of a comparator 6, which is composed of a temperature detection circuit 1 by being connected with the output ends A and B of a bridge circuit comprising a negative characteristic temperature sensing element 5 for detection of the suction port temperature of an indoor unit and resistors 2-4 and the output terminal which is connected to the charging-discharging circuit comprising a capacitor 8 and a variable resistor 9 and further to the comparator 13 in a controlling circuit 10 in order to connect output terminals of the comparators 6 and 13 to an OR circuit 14, produced by the temperature at the suction port. At this time, the capacitor 8 is charged. When room temperature attains the set value, the comparator 6 issues no output, resulting in turning OFF the compressor 16 during the time when the discharging of the capacitor 8 is going on. After the elapse of OFF time, the compressor 16 is started again with the output from the comparator 13.</p> |
