Pleated filter and method of making the same

Details Pleated filter and method of making the same Pleated filter and method of making the same

B - Operations, Transporting

01

D

B01D 46/52 (2006.01)

Patent

CA 2337947

Filter assemblies are disclosed that include a pleated web in which the pleats are connected to each other (16, 18, 20) to provide support for the filter media during use. The interconnected pleats preferably form an array of openings facing the upstream side of the filter assembly when subjected to fluid pressure during use. In addition, the preferred filter media also includes an array of pockets (24) located behind each of the points at which the pleats are connected. By connecting the pleats to form arrays of openings and pockets during use, the filter assemblies provide a structure that deforms in a predetermined, acceptable manner without the need for external support structure to support the pleats.

L'invention concerne des ensembles filtrants comportant une bande plissée dans laquelle les plis sont reliés les uns aux autres (16, 18, 20) en vue de constituer un support pour les moyens filtrants pendant leur utilisation. Les plis reliés entre eux forment de préférence un réseau d'ouvertures faisant face au côté amont de l'ensemble filtrant lorsque celui-ci est soumis à la pression du fluide pendant l'utilisation. En outre, les moyens filtrants préférés comportent également un réseau de poches (24) situées derrière chacun des points au niveau desquels les plis sont reliés. La liaison des plis pour former des réseaux d'ouvertures et de poches pendant l'utilisation permet aux ensembles filtrants de constituer une structure qui se déforme d'une manière acceptable prédéterminée, sans nécessiter de structures de support externes pour supporter les plis.

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