Patent ID: 6077334
Filing Date: 2000-06-20
Classification: B03C

Abstract:
A cartridge electronic air filtration assembly for positioning in a moving air stream constituting an airflow which contains fine particles to be trapped comprising:(a) a frame for supporting a trapping medium;(b) an air-permeable trapping medium mounted within the frame for trapping particles, said trapping medium having an airflow receiving face surface to receive air from an oncoming air stream for passage through said trapping medium;(c) an ion source; and(d) electrical coupling means for connection of the ion source to a power supply that delivers an ionizing voltage,characterized in that the ion source is carried by the air filtration assembly, positioned adjacent to the outer, airflow receiving face surface of the trapping medium, said ion source being directed so as to emit, when supplied with an ionizing voltage from the power supply, ions outwardly from the airflow receiving face surface of said trapping medium into the oncoming air stream whereby an expanded zone of ionized air will be formed within the air stream in advance of the trapping medium and ion source thereby charging particles contained therein for deposit within the trapping medium when particles are carried into the trapping medium by the air stream.