An air cleaner comprises a dust collector of the positive corona using high voltage source, for example DC 7KV, to collect the dust particles in the air, a plurality of ionizing wires function as the heating wire, and the separate voltage source for the ionizing wire is a relatively lower voltage source,...http://www.google.es/patents/US5045095?utm_source=gb-gplus-sharePatente US5045095 - Dust collector for an air cleaner
