| 摘要 |
PROBLEM TO BE SOLVED: To remove indoor air contaminants generated in a room and remove harmful matters contained in the outside air admitted into a room. SOLUTION: In the device, an exhaust passage 1 intercommunicates with a suction passage 2 through a communication part 4, while an air purifying section 3 is provided at a predetermined location in the passage 2. In addition, an exhaust damper 1b swingable between a position where the passage 1 is closed, and a position where the part 4 is closed, and a suction damper 2b swingable between a position where the passage 2 is closed, and a position where the part 4 is closed, are provided. |
