Patent ID: 9474995
Filing Date: 2016-10-25
CPC Classification: B01D,F24F

Claim Text:
1. A filter assembly, comprising: a first pleated part comprising first zigzag-type pleats said first zig-zag-type pleats comprising first lower peaks and first upper peaks and having a first peak height, h1, that is defined by a distance between at least one of said first lower peaks and at least one of said first upper peaks; a second pleated part comprising second zigzag-type pleats, the second zig-zag type pleats comprising second lower peaks and second upper peaks and having a second peak height, h2, that is defined by a distance between at least one of said second lower peaks and at least one of said second upper peaks, said second pleated part being adjacent and connected to said first pleated part, the second pleated part at least partially defining a seating place; said first and second pleated parts each comprising first and second ends and a length; a pair of end strips connected to the first and second ends of said first and second pleated parts along the length thereof; and a diffusion member seated in said seating place such that at least a portion of the diffusion member is seated on at least one of said second upper peaks, said diffusion member having a thickness; wherein: said first and second upper peaks face an inlet side of said filter assembly; said first and second lower peaks face an outlet side of said filter assembly; h1 is greater than h2; h2 and the thickness of the diffusion member are set such that an upper surface of the diffusion member does not extend past said first upper peaks when the diffusion member is seated in said seating place; and said filter assembly is configured such that an air flow filtered by said second pleated part passes through said diffusion member.