VENTILATOR CONTROLLER FOR AIR CONDITIONER

PURPOSE:To eliminate feeding of dirt in the air produced by cigarette, etc., to other chamber by reversing an operation of an air conditioner fan by one smoke sensor provided in a body to operate it as an air supply fan, using air supply ducts to rooms as suction ducts, the controlling to open or close a damper in an air feed duct. CONSTITUTION:When a smoke sensor 2 senses dirt in the air, a microcomputer 3 closes dampers 116 except one. An air conditioner fan 1 is reversely operated for suction, and an air supply duct 106 is used as a suction duct 110 to intake the air of a room in which the damper 116 is opened to a body 102. The dampers 116, 116a, 116b are sequentially opened one by one, and any of rooms 107, 107a, 107b in which the sensed level of the sensor 2 is highest is judged as the room in which dirt in the air is generated. Capacity of a ventilation fan 112 is raised, its ventilation control is preferentially conducted thereby to judge the dirt in the air by one sensor 2 even in a room having only the duct 106 without duct 110 to the body and to control to ventilate it.