Patent ID: 6669844
Filing Date: 2003-12-30
Classification: B01D

Abstract:
Filtration device comprising:a housing which includes an inlet opening for supplying an unfiltered material thereto, and an outlet opening for removing a filtered material therefrom; and at least one filter module positioned within the housing and having two end plates; wherein the filter module includes filter elements of deep bed filter material which are stacked one on top of another, wherein the filter elements have (i) an outside peripheral surface which acts as a flow surface, and (ii) first and second types of openings which are unconnected to one another and which establish narrow longitudinal structures, and wherein said first and second types of openings together form an inner structure that establishes a grid-like structure of substantially uniform widths of filtration area, wherein said filtration area is substantially uniform throughout the deep bed filter material whereby boundary surfaces are formed by the deep-bed filter material to thereby establish a flow surface for one of the filtered material and the unfiltered material, and wherein at least one filter element has a connecting opening that establishes a connection from at least one of said first type of openings to a peripheral surface of said at least one filter element, and wherein at least one of said two end plates has openings that are connected to the at least one inner structure, and wherein the filter elements are stacked on top of one another such that only the first type of openings are connected to one another and only the second type of openings are connected to one another to thereby respectively form filtered material channels and unfiltered material channels within the filter module.