| 摘要 |
PROBLEM TO BE SOLVED: To provide an air purifying device provided jointly with both functions of a ventilating device for discharging contaminated air in a room and an air purifier for adsorbing dust, etc., in the air and capable of high sky purifying air by controlling jointly both functions. SOLUTION: A switching valve 11 is disposed an the part where a first duct 2 connecting an indoor blow-off port 3 to an outside suction port 4 through a first fan 5 and the air purifier 6, and a second duct 7 connecting an indoor suction port 8 to an outside discharge port 9 through a second fan 10 are intersected to each other. The switching valve 11 is switched to a ventilating mode (A-A) or an internal gas circulating mode (B-B) based on the output of a dust sensor 121 and a gas sensor 122 and the set value previously set at a control part 13, and also revolutional speed of the first and second fans are controlled automatically based on the output of the sensor by the control part 13. |
