| 摘要 |
PURPOSE:To prevent a room from being polluted while an air conditioner is operated, and to improve the sanitar condition in the room, by composing an air conditioner in such a manner that a ventilating level, which is determined from a pollution level at an early time of operation, is detected by a room pollution sensor, being compared with a set pollution level, and an air conditioning operation is changed to a ventilating operation, when a pollution level reaches a ventilating level. CONSTITUTION:An initial level read-in signal from a control circuit 1 is put into the clear terminal of a counter 5, oscillating outputs from a comparator 4, a resistor 13-17 and a capacitor 55 are put into the clock terminal of said counter, counting is performed in it, and the voltage of + input terminal of a comparator 6 rises through an output Q1-Q7. When this voltage is accorded with the voltage level of a ventilating sensor circuit 9, counting is stopped, and an initial level is stored. When an air pollution proceeds, and the voltage of a sensor is hightened up to a ventilating level which is determined by a resistor 46. By this voltage, a comparator 7 is operated, a ventilation operating command is put out to a control circuit 1, to change an air conditioner to a ventilating operation. |
