| 摘要 |
PURPOSE:To efficiently purify a room air by providing a dust-proof filter, fan, and heater in the air passage from a sucking port in the ceiling part to a blowing port in the floor part and controlling the electric current of the heater according to the signal from a detector sensor for contaminant. CONSTITUTION:A dust-proof filter 4, fan 7, and heater 8 are provided in the air passage 6 from the sucking port 2 in the ceiling to the blowing port 3 in the floor. The electric current of the heater 8 is controlled by signals from a detector sensor 9 for contaminant. Thereby, contaminant due to smoking, etc., can be carried to the sucking port without diffusing the contaminant and air in the room can efficiently be purified. |
