| 摘要 |
PROBLEM TO BE SOLVED: To provide an air-conditioner without need for replacing a dust collecting filter. SOLUTION: Air is circulated from each living room of a house 1 to a furnace 3 arranged in a cellar through an air duct 2a to remove the dust contained in the air by a dust collecting filter 32 set in the middle of an air passage in the furnace 3 and then sent to each living room by an air duct 2b. A catalyst bed is formed on the surface of the dust collecting electrode of the filter 32, and the dust depositing on the dust collecting electrode is oxidized and decomposed by the catalyst bed. |
