| 摘要 |
An air cleaning device 20 for removing aerosol particles from an air stream comprises: (a) a particle charger 22 with a pin-type electrode 23 for generating air ions in the air stream, the particle charger having a particle charging zone within which, in use, aerosol particles in the air stream are electrically charged via collision with the air ions; (b) a filter 26 for precipitating electrically charged aerosol particles from the air stream moving through the device; and (c) an air mover for moving the air stream through the device; wherein the particle charger and the air mover are provided upstream of the filter; and wherein the particle charger and the air mover are intimately coupled together. The particle charger and the air mover may be directly joined together in an airtight manner or may be provided as a single unit. The air cleaning device can further comprise an earthed counter-electrode 24. Suitably, the air mover is a mechanical fan 25, bellows, a convective airflow device or a centrifugal fan. Also described is an air cleaning method for removing aerosol particles from an air stream. |
