Air filtration media pack, filter element, air filtration...

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 46/52 (2006.01)

Patent

CA 2676825

An air filtration media pack is provided having a plurality of layers of single facer media. The layer of single facer media includes a fluted sheet, a facing sheet, and a plurality of flutes extending between the fluted sheet and the facing sheet and having a flute length extending from a first face of the filtration media pack to a second face of the filtration media pack. A first portion of the plurality of flutes are closed to unfiltered air flowing into the first portion of the plurality of flutes, and a second portion of the plurality of flutes are closed to unfiltered air from flowing out of the second portion of the plurality of flutes so that air passing into one of the first face and the second face of the media pack and out the other of the first face and the second face of the media pack passes through media to provide filtration of the air. The fluted sheet includes repeating internal peaks facing toward the facing sheet and repeating external peaks facing away from the facing sheet. In addition, the fluted sheet can include at least one ridge extending along at least 50% of the flute length between an internal peak and an adjacent external peak. Additional characterizations of an air filtration media pack, air filtration media, and methods of making and using are provided.

L'invention concerne un ensemble de supports de filtration d'air ayant une pluralité de couches de supports de parement uniques. La couche de supports de parement uniques comprend une feuille rainurée, une feuille de parement et une pluralité de rainures s'étendant entre la feuille rainurée et la feuille de parement et ayant une longueur de rainure s'étendant d'une première face de l'ensemble de supports de filtration à une seconde face de l'ensemble de supports de filtration. Une première partie de la pluralité de rainures est proche de l'air non filtré circulant dans la première partie de la pluralité de rainures, et une seconde partie de la pluralité de rainures est proche de l'air non filtré circulant hors de la seconde partie de la pluralité de rainures de sorte que l'air passant dans l'une des première et seconde face de l'ensemble de supports et hors de l'autre première et seconde face de l'ensemble de supports traverse le milieu pour assurer une filtration de l'air. La feuille rainurée comprend des pics internes répétés face à la feuille de revêtement et des pics externes répétés éloignés de la feuille de revêtement. De plus, la feuille rainurée peut comprendre au moins une strie s'étendant le long d'au moins 50 % de la longueur de rainure entre un pic interne et un pic externe adjacents. Des caractérisations supplémentaires d'un ensemble de supports de filtration d'air, de supports de filtration d'air et de procédés de fabrication et d'utilisation sont proposées.

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