Patent ID: 8118900

Claim:
A dust collector comprising: (a) a housing having a dirty air chamber, a filtered air chamber, a tubesheet between the dirty air chamber and the filtered air chamber, a dirty air inlet in communication with the dirty air chamber, and a clean air outlet in communication with the filtered air chamber; the tubesheet having at least one aperture; (b) a filter element removably sealed within the at least one aperture in the tubesheet; the filter element removing at least some contaminant from an airstream as it flows from the dirty air inlet, into the dirty air chamber, through the filter element, and into the filtered air chamber; (i) the filter element comprising a panel of filter media having an upstream flow face and an opposite downstream flow face; unfiltered air flowing from the dirty air chamber through the upstream flow face and into the filter media; filtered air exiting the filter element in a straight-flow manner through the downstream flow face to flow into the filtered air chamber; (ii) the filter element having a length L f and a width W f ; (c) a reverse pulse cleaning arrangement constructed and arranged to periodically emit a pulse of gas into the downstream flow face of the filter element to exit through the upstream flow face; the reverse pulse cleaning arrangement including: at least Q number of blowpipes directed at the filter element to periodically emit the gas pulses into the downstream flow face of the filter element; wherein Q is an integer at least 2 or greater, and Q=L f /(( W f +2 *P OC )*(1 +P NC (/100)))) and wherein P OC =pulse over coverage, and P NC =maximum pulse non-coverage; and (ii) the filter element being accumulator-free.