| 摘要 |
PURPOSE:To prolong the life of a filter and to decrease the amount of ozone included in the discharged air by providing an activated carbon filter and a catalytic filter on an air leading path which leads the air around a corona discharger to an absorbing means. CONSTITUTION:The air containing the ozone developed in a primary electrifier is led in a downstream direction in a main body duct 14, passes through a guiding duct 17, and is discharged out of the device by a discharging fan 15. The filter 18 which is mainly composed of active carbon and the filter 19 which is mainly composed of catalyst are juxtaposed on the air leading path. Therefore, ozone can be effectively dissolved. Especially, when the catalytic filter 18 and the activated carbon filter 19 are provided from the upstream of the air flow in that order, the ozone resolving efficiency can be improved by initially bringing the air whose ozone density is high into contact with the catalysis. Consequently, the life of the filters 18 and 19 can be prolonged, and the content of ozone included in the discharged air can be decreased. |
