Bipolar charged filter and method of using same

Details Bipolar charged filter and method of using same Bipolar charged filter and method of using same

B - Operations, Transporting

03

C

B03C 3/34 (2006.01) B03C 3/017 (2006.01) B03C 3/155 (2006.01)

Patent

CA 2131954

ABSTRACT OF THE DISCLOSURE A bipolar electrostatic filter system includes a negative high voltage source, a positive high voltage source, a filter arranged at a downstream end of the system, and an ionizer arranged upstream of the filter. The ionizer includes a first set of ionizing wires connected to the negative high voltage source, a second set of ionizing wires connected to the positive high voltage source, and a cycle time relay to alternatingly activate the first set of ionizing wires with the negative high voltage source and the second set of ionizing wires with the positive high voltage source. A method of filtering includes arranging a dielectric filter downstream of an ionizer, moving a fluid to be filtered sequentially through the ionizer and the filter, negatively charging particulate matter passing through the ionizer during a first cycle period by activating the ionizer with a negative high voltage positively charging particulate matter passing through the ionizer during a second cycle period by activating the ionizer with a positive high voltage, and repeatedly cycling back and forth between the first cycle period and the second cycle period.

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