Patent ID: 6926758
Filing Date: 2005-08-09
Classification: B03C,F01N,Y02T

Abstract:
1. An apparatus for separating particles from a gas stream comprising a housing having a chamber therein, and an inlet for introducing the gas stream into the chamber, an ioniser in the housing for creating an ionising zone within the chamber through which the gas stream passes in use, particles in the gas stream being charged as they pass through the ionising zone, and a structure within the housing having an outlet for extracting gas from the chamber, the outlet comprising a plurality of narrow apertures in the structure, with the structure operatively charged to the same polarity as the charged particles such that an intense electric field extends across the apertures and charged particles approaching an aperture are repelled away from the aperture by the like-charged structure, wherein the outlet is located downstream from the ionising zone, and in that the particles are moved away from the outlet as they pass through the ionising zone.