Patent ID: 6454839
Filing Date: 2002-09-24
Classification: B03C,Y10S

Abstract:
An electrofiltration apparatus comprising an ionization stage, a particle collection stage, and an air movement means, the air movement means directing air in at least a first direction, the particle collection stage comprising a collector cell formed of at least one flow channel layer formed by at least one structured film layer and a second layer, the structured film layer having a first face and a second face, at least one face of the structured film forming, at least in part, flow channels which flow channels are oriented at least in part in said at least first direction, said structured film further having high aspect ratio structures over at least a portion of the face forming the flow channels, said high aspect ratio structures projecting into the flow channels, and wherein a second film layer, comprising the flow channel layer second layer or a further layer, at least in part defines fluid pathways through the flow channels of the collector cell so as to allow air directed by the air movement means to move through and along the flow channels, and wherein the film layers are electrostatically charged.