| 摘要 |
PROBLEM TO BE SOLVED: To provide an air cleaner which steadily improves dust collection performance of a filter, even for filters to be used for a long period of time to maintain a stable dust collection performance for an extended period.SOLUTION: A cleaner comprises: an air inlet 3 and an air outlet 4; a prefilter filter material 5 collecting dust in the air; an unwinding device 13 and a winding device 14 supplying the prefilter filter material into a wind channel 8; and a charging part charging the prefilter filter. The charging part is disposed outside the wind channel 8, and when a fan stops, the prefilter filter material 5 is unwound and voltage is applied from a high voltage power supply to the charging part 18 to stably maintain an excellent dust collection performance.SELECTED DRAWING: Figure 3 |
