| 摘要 |
<p>PROBLEM TO BE SOLVED: To automatically select a fan-type driving with large cleaning capability and an ion-type driving with ultra-calm sound in accordance with brightness of a connected room and degree of contamination of the air when floating dust charged by discharge of corona discharging electrodes arranged in a suction inlet is attracted by means of a dust collecting filter. SOLUTION: Corona discharging electrodes are arranged in a suction inlet 1 and an ion-type driving flow path X wherein floating dust charged in the inlet is attracted on a dust collecting filter 11 and the air is made to flow to a vent hole 3 and a fan-type driving flow path Y wherein the charged floating dust is attracted on a dust collecting filter 10 by means of a fan and the air is made to flow to a vent hole 2 are formed in parallel and a control circuit for controlling driving and stopping of the fan 4 is installed.</p> |
