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US 10,946,313 B2Granted
Pleated filtration media, media packs, filter elements, and methods for filtering fluids
AssigneeDonaldson Company, Inc.
InventorGary J. Rocklitz
Life of this patent
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Abstract
Pleated filtration media, media packs, filter elements, and methods for filtering fluid are provided which contain three dimensional flutes in the media surface, the flutes configured to improve filter performance. In certain embodiments the flutes have defined peaks that reduce masking between adjacent pleats, the flutes have ridges along their length to modify flute cross sectional geometry, and/or the flutes provide for volume asymmetry across the media.
Claims19
A filter element comprising:
- filter media defining a plurality of pleats extending between a first set of pleat folds defining a first flow face and a second set of pleat folds defining a second flow face in a back and forth arrangement, the filter element defining an upstream side having the first flow face and a downstream side having the second flow face,
- the filter media defining a plurality of flutes extend along the pleats between the first face and the second face, wherein the plurality of flutes are perpendicular to the first set of pleat folds and the second set of pleat folds,
- wherein each flute has a central flute peak along the flute, wherein the flute peak extends beyond the general profile of the flute, and
- wherein the flutes defined by adjacent pleats of filter media cooperatively define an upstream volume there-between to accommodate fluid flow into the filter element through the first face.
1 more element
Dependencies are inferred from the claim text.