Dust collector for collecting fine dust in air

摘要

A dust collector for collecting fine dust in air and for cleaning the air is provided. A first friction disk is produced from a first substance. A second friction disk is produced from a second substance that is chargeable triboelectrically in a polarity different from a polarity of the first substance. The first and second friction disks frictionally contact one another. The second friction disk moves relative to the first friction disk, to generate electrostatic charge and thereby attract fine dust.