B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 46/12 (2006.01) B01D 39/00 (2006.01) B01D 39/16 (2006.01) B01D 46/02 (2006.01) B01D 46/24 (2006.01) B01D 46/52 (2006.01) D01F 6/90 (2006.01) D01F 6/92 (2006.01)
Patent
CA 2419849
The use of fine fiber of fiber having a fiber diameter of about 0.0001 to 0.5 microns has become an important design tool for filter media. Common filter media have been prepared with a layer of fine fiber on typically formed the upstream or intake side of the media structure. The fine fiber increases the efficiency of filtration by trapping small particles which increases the overall particulate filtration efficiency of the structure. Improved fine fiber structures have been developed in which a controlled amount of fine fiber is placed on both sides of the media to result in an improvement in filter efficiency but a substantial improvement in lifetime.
L'utilisation de fibres fines de diamètre d'environ 0,0001 à 0,5 microns est devenue un outil de conception important pour les milieux filtrants. Les milieux filtrants classiques sont préparés à l'aide d'une couche de fibres fines généralement formée sur le côté amont ou d'admission de la structure filtrante. Les fibres fines augmentent l'efficacité de la filtration par piégeage de petites particules, ce qui augmente l'efficacité globale de la filtration particulaire de la structure. On a développé des structures améliorées de fibres fines dans lesquelles on a placé une quantité régulée de fibres fines sur les deux côtés du milieu afin d'obtenir une amélioration de l'efficacité du filtre ainsi qu'une amélioration sensible de sa durée de vie.
Benson James D.
Crofoot Douglas G.
Gogins Mark A.
Weik Thomas M.
Donaldson Company Inc.
Oyen Wiggs Green & Mutala Llp
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