Filter element having center piece and methods

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 25/24 (2006.01) B01D 25/00 (2006.01) B01D 46/42 (2006.01) B01D 46/52 (2006.01)

Patent

CA 2449164

A core construction (20) for use in a filter element (10) includes a tubular member having a wall with opposite first and second ends. The first end is adaptable for engagement with structure, such as a frame (28) utilized with a filter element. The second end is also engageable with external structure, such as a handle (22). Preferably, a filter element (10) is constructed by rolling a media construction (14) around the core construction. The media construction (14) includes a corrugated sheet secured to a flat sheet rolled around the core construction into a coiled construction (24). The coiled construction (24) has inlet flutes and outlet flutes. Methods for using and assembling filter elements preferably use core constructions as described herein.

Selon cette invention, une structure centrale (20) utilisée dans un élément filtrant (10) comprend un élément tubulaire comportant une paroi pourvue d'une première et d'une seconde extrémité. La première extrémité est conçue pour venir en prise avec une structure, telle qu'un cadre (28), utilisée avec un élément filtrant. La seconde extrémité peut également venir en prise avec une structure externe, telle qu'une poignée (22). L'élément filtrant (10) est de préférence fabriqué au moyen d'une structure de support (14) enroulée autour de la structure centrale. La structure de support (14) comprend une feuille ondulée fixée à une feuille plane enroulée autour de la structure centrale en une structure en bobine (24). Cette structure en bobine (24) est dotée de cannelures d'entrée et de cannelures de sortie. Cette invention concerne également des procédés d'utilisation et d'assemblage de ces éléments filtrants faisant appel de préférence aux structures centrales ci-décrites.

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