초록 ▼

A corrugated axial filter (148) has a plurality of flow channels (178, 180, 182, 184, 208, 212) extending axially from the upstream dirty frontside (146) of the filter to the downstream clean backside (160) of the filter. Each channel has an upstream opening (186) at the upstream dirty frontside and

A corrugated axial filter (148) has a plurality of flow channels (178, 180, 182, 184, 208, 212) extending axially from the upstream dirty frontside (146) of the filter to the downstream clean backside (160) of the filter. Each channel has an upstream opening (186) at the upstream dirty frontside and has top and bottom walls (188 and 190) and right and left sidewalls (192 and 194) extending from the opening rearwardly toward the downstream clean backside. The right and left sidewalls taper towards each other as they extend rearwardly to define a triangular shaped flow channel. Right and left sidewalls of adjacent flow channels are a single continuous sheet of filter material (130) in a zig-zag pattern (134) with a plurality of fold lines including a first set of fold lines (136, 138, 140, 142, 144) at the upstream dirty frontside and a second set of fold lines (150, 152, 154, 156, 158) at the downstream clean backside.

대표청구항 ▼

[ What is claimed is:] [1.]1. A corrugated axial filter for filtering fluid, said filter having an upstream dirty frontside and a downstream clean backside, said filter having a plurality of flow channels extending axially from said upstream dirty frontside to said downstream clean backside, each ch

[ What is claimed is:] [1.]1. A corrugated axial filter for filtering fluid, said filter having an upstream dirty frontside and a downstream clean backside, said filter having a plurality of flow channels extending axially from said upstream dirty frontside to said downstream clean backside, each channel having an upstream opening at said upstream dirty frontside and having top and bottom walls and right and left sidewalls extending from said opening rearwardly toward said downstream clean backside, said right and left sidewalls tapering towards each other as they extend rearwardly to define a triangular shaped flow channel, wherein right and left sidewalls of adjacent flow channels are a single continuous sheet of filter material in a zig-zag pattern with a plurality of fold lines comprising a first set of fold lines at said upstream dirty frontside and a second set of fold lines at said downstream clean backside,wherein:the top wall of a first flow channel is the bottom wall of a second flow channel immediately above said first flow channel;the bottom wall of said first flow channel is the top wall of a third flow channel immediately below said first flow channel;a nondoubled single layer second sheet comprises both said top wall of said first flow channel and said bottom wall of said second flow channel, said second sheet having a top surface facing upwardly into said second flow channel, said second sheet having a bottom surface facing downwardly into said first flow channel;a nondoubled single layer third sheet comprises both said bottom wall of said first flow channel and said top wall of said third flow channel, said third sheet having a top surface facing upwardly into said first flow channel, said third sheet having a bottom surface facing downwardly into said third flow channel.