Gas separation: processes – Filtering – With cleaning of filter
Reexamination Certificate
2006-04-11
2006-04-11
Hopkins, Robert A. (Department: 1724)
Gas separation: processes
Filtering
With cleaning of filter
C095S281000, C095S283000, C096S417000, C096S421000, C055S282200, C055S283000, C055S294000, C055S302000, C055S315000, C055S467000, C055S482000, C210S411000, C210S413000
Reexamination Certificate
active
07025811
ABSTRACT:
The present invention is directed to a filter cleaning device, in particular, diesel particulate filters. In one embodiment, the device comprises a source of high pressure fluid and means to transport the fluid to a nozzle or nozzles; an actuator for moving the nozzles; a controller with logic for instructing the actuator to automatically move the nozzle or nozzles across the surface of the filter; a collection device and suction device downstream of the filter; and ducting to transport the fluid between parts of the system. In one embodiment, a second collection device is used downstream of the suction device to provide additional particulate removal. There are three methods proposed for providing high pressure cleaning fluid to the filter face: 1) rotating the filter and rotating the jet about an axis outside of the filter; 2) moving a nozzle in two perpendicular directions (i.e., x-y); and 3) rotating a rectangular nozzle about the central axis of the filter.
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Edgar Bradley L.
Lemke Richard G.
Rumminger Marc D.
Streichsbier Michael
Wehrley Dean
Cleaire Advanced Emission Controls
Heller Ehrman LLP
Hopkins Robert A.
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