| 摘要 |
PURPOSE:To remove ultrafine dust and to clean the air in a room by detachably mounting a 2nd filter consisting of an electric charged net and an activated carbon net stuck with activated carbon on the backside of a 1st filter consisting of a frame and nets fixed to the frame. CONSTITUTION:The ultrafine dust passing through the nets 9 of the 1st filter 7 is attracted by the electrific charged net 11 of the 2nd filter 10 and is removed from the air. As comparatively large dust is removed by the 1st filter 7, the deterioration of the dust collecting effect and the increase of draft resistance due to the clogging are prevented, thereby maintaining the effect for a long period. Moreover, the odor in the air is adsorbed by the activated carbon net 12 and the air in the room is cleaned. The deteriorated 2nd filter 10 due to the usage over a long period is detachably and attachably exchanged simply in a short time by detaching attaching snaps 13a from to the other snaps 13b fitted in the net 9. |
