Gas separation – Zigzag – corrugated – or conical
Patent
1990-02-05
1991-11-19
Chiesa, Richard L.
Gas separation
Zigzag, corrugated, or conical
55497, 55528, B01D 4652
Patent
active
050663194
ABSTRACT:
Filter cartridge, in particular with a block-like construction, including a plurality of fold walls created by folding in a zig-zag fashion for a medium to be filtered to pass through from one edge area of the zig-zag folding in the direction of the edge area of the folding on the opposite side made of a material which can be permeated by the medium to be filtered provided with offsets formed by roll forming which extend out on both sides of each fold wall in the direction of flow of the medium and, in particular, are of a length which is greater than their width whereby the offsets of adjacent fold walls lie in contact with one another as spacers and stiffeners and that the height of the offsets lying in contact with one another of two fold walls connected together by a fold edge increases in the direction of the opposite fold edge and that therefore the spacing between two adjacent fold walls decreases uniformly in the direction of flow until the medium passes through the fold wall from which point on the spacing increases, whereby the offsets are of a constant width perpendicular to the direction of flow and that the side faces of the offsets run vertical to the folds which connect together the fold walls.
REFERENCES:
patent: 3388536 (1968-06-01), Nash
patent: 3397518 (1968-08-01), Rogers
patent: 3531920 (1970-10-01), Hart
patent: 3941571 (1976-03-01), Getzin
patent: 4041203 (1977-08-01), Brock et al.
patent: 4268290 (1981-05-01), Barrington
patent: 4547950 (1985-10-01), Thompson
patent: 4615804 (1986-10-01), Wright
patent: 4619675 (1986-10-01), Watanabe
European Search Report for Application No. EP 90250039, dated Apr. 26, 1990.
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