Filter cartridge

B - Operations – Transporting – 01 – D

Patent

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Details

183/99

B01D 46/14 (2006.01) B01D 29/01 (2006.01) B01D 46/52 (2006.01) B29C 65/00 (2006.01) B29C 65/18 (2006.01)

Patent

CA 2009478

Filter cartridge, in particular with a block-like construction, comprising a plurality of fold walls created by folding in a zig-zag fashion for a medium to be filtered to pass through from one edge area of the zig-zag folding in the direction of the edge area of the folding on the opposite side made of a material which can be permeated by the medium to be filtered provided with offsets formed by roll forming which extend out on both sides of each fold wall in the direction of flow of the medium and ,in particular, are of a length which is greater than their width whereby the offsets of adjacent fold walls lie in contact with one another as spacers and stiffeners and that the height of the offsets lying in contact with one another of two fold walls connected together by a fold edge increases in the direction of the opposite fold edge and that therefore the spacing between two adjacent fold walls decreases uniformly in the direction of flow until the medium passes through the fold wall from when on the spacing increases,whereby the offsets are of a constant width perpendicular to the direction of flow that width is smaller than the greatest height of the offsets as measured from the plane of the fold wall and that the side faces of the offsets run vertical to the folds which connect together the fold walls.

Cette invention concerne une cartouche filtrante, en particulier une cartouche en forme de bloc, comprenant une série de plis en zigzag, le fluide à filtrer circulant d'une arête de pli vers l'arête de pli opposée et traversant le matériau filtrant qui comporte des ressauts réalisés par profilage sur les faces opposées de deux pans adjacents et orientés dans le sens de circulation du fluide à filtrer. Ces ressauts ont une longueur supérieure à leur largeur et ceux de deux pans adjacents sont en contact l'un avec l'autre, formant ainsi des espaceurs et raidisseurs. Ils présentent une hauteur qui augmente linéairement d'une arête de pli à l'arête de pli opposée, ce qui donne un espacement entre deux pans adjacent qui diminue uniformément dans le sens de circulation du fluide à filtrer. Ils ont également une largeur constante mesurée perpendiculairement au sens de circulation du fluide à filtrer, largeur qui est inférieure à leur plus grande hauteur mesurée à partir du plan générale du pan dans lequel ils sont formés. Les parois latérales de ces ressauts sont perpendiculaire à l'arête de pli entre deux pans consécutifs.

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