Patent ID: 6354442
Filing Date: 2002-03-12
Classification: B01D

Abstract:
A filter comprising:a filter medium for filtering contaminants from a process fluid, having a filtration side on which said contaminants collect and a filtrate side from which filtrate flows; a counter-flow generator comprising at least one fluid outlet located on said filtrate side that directs a localized stream of counter-flow fluid from said filtrate side to said filtration side of said filter medium to thereby dislodge said contaminants which have collected on said filtration side of said filter medium; a clearing-flow generator comprising at least one fluid outlet located on said filtration side that directs a localized stream of clearing-flow fluid, with a velocity having a component that is parallel to the surface of the filter medium, onto said filter medium; and the counter-flow generator and clearing-flow generator being movably mounted relative to said filter medium for movement of said counter-flow and clearing-flow fluid streams relative to and over a substantial portion of said filter medium.