| 摘要 |
PROBLEM TO BE SOLVED: To provide an air cleaning system which can silently clean the air in a room with a high heat efficiency by providing a plurality of blowers which circulate the air in the room and a ventilator for outside air to the system and actuating the ventilator when a noxious gas detected by means of a noxious gas detecting means exceeds a prescribed reference range. SOLUTION: A blower 1A is set on the floor 14 of a room and another blower 1B is installed to the wall 15 on the diagonal line from the position of the blower 1A near the ceiling of the room. The blower 1A is set in a movable state and the blower 1B is provided with a ventilator 1C. The blowers 1A and 1B are installed in such a state that their fans are respectively housed in their casings 2 and CO2 sensors and thermocouples are installed to the suction-side flow passages of the fans, and then, filters and Peltier elements are installed to the discharge-side flow passages of the fans. When the CO2 concentrations in the room detected by means of the CO2 sensors exceed a prescribed value, the blower 1B is switched to ventilation from circulation so as to introduce the outside air to the room by closing the damper for circulation of the blower 1B and opening the damper for ventilation of the blower 1B. |
