| 摘要 |
PROBLEM TO BE SOLVED: To increase the life and deodorizing capacity of a deodorizing filter of an air cleaner. SOLUTION: In an air cleaner, a dust collecting filter 10 is arranged on the side of a suction port 13 of an air passage 30 and a deodorizing filter 7 is arranged on the downstream side of the dust collecting filter 10, and air is sucked from the suction port 13 by a blower means to be passed through both filters while cleaned air is emitted from an emitting port 23 of the air passage 30. In this case, the region through which air passes in the deodorizing filter 7 is divided into two flow channels 31, 32, and an adsorbent to which an oxidation catalyst is added and a catalyst exciting means for exciting the oxidation catalyst are provided at every flow channels 31, 32. A flow channel changing-over means 33 for alternately changing over both flow channels 31, 32 to a main flow channel through which air passes and an auxiliary flow channel not permitting air to pass or more reduced in air quantity than the main flow channel is provided. |
