Air filter having low internal pressure drop

Details Air filter having low internal pressure drop Air filter having low internal pressure drop

B - Operations, Transporting

01

D

B01D 46/40 (2006.01) B01D 53/26 (2006.01) F04B 39/16 (2006.01)

Patent

CA 2098471

Disposable air filter includes a filter element formed from a stacked plurality of annular disks. The disks are formed from a sorptive material and expand upon absorption of oil or water droplets. The disks are slightly compressed by a movable baffle. The baffle floats upon a stream of air entering the filter and directs the air radially through the filter element. The air flows between and through the disks with a resulting low pressure drop across the filter. As the disks expand, the baffle shifts axially within a filter housing to maintain the pressure drop across the filter element.

Cette invention concerne un filtre à air jetable qui comprend un élément filtrant formé d'un empilage de disques annulaires en matériau absorbant qui augmente de volume à l'absorption de gouttelettes d'huile ou d'eau. Les disques sont légèrement comprimés par un déflecteur mobile qui flotte sur une veine d'air qu'il dévie radialement à travers l'élément filtrant. L'air s'écoule entre les disques et à travers sans perte de charge marquée. € mesure que les disques augmentent de volume, le déflecteur se déplace axialement dans la cartouche filtrante pour maintenir la perte de charge à une valeur stable.

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