Water-treating ceramic filter unit
AssigneeProterial, Ltd.
InventorsYoshio Katayama, Keiko Nakano, Toshitaka Ishizawa
Life of this patent
Estimating the term…
Abstract
A water-treating ceramic filter unit comprising a filter having pluralities of flow paths partitioned by porous ceramic cell walls and plugs alternately sealing the one-side or other-side ends of the flow paths; a housing containing the filter such that water to be treated is supplied from one end of the filter, and that the treated water is discharged from the other end of the filter; and seal members disposed on the outer edge portions of both end surfaces of the filter for longitudinally sandwiching and fixing the filter to the housing; the maximum of a gap between a side surface of the filter and the housing being equal to or less than the equivalent diameter of the flow paths.
Claims10
A water-treating filter unit comprising
- a columnar filter having pluralities of flow paths partitioned by pluralities of porous ceramic cell walls and extending in one direction, a first end, a second end, pluralities of said flow paths being composed of first flow paths plugged only on the side of said first end, and second flow paths plugged only on the side of said second end;
- a first elastic seal member arranged along a first outer edge portion of the first end surface of said filter, and a second elastic seal member arranged along a second outer edge portion of the second end surface of said filter, and
- a housing integrally comprising a supply-side lid having an inlet for supplying water to said second flow paths from outside, and a first flange abutting said first seal member disposed on said first outer edge portion;
- a discharge-side lid having an outlet for discharging water from said first flow paths to outside, and a second flange abutting said second seal member disposed on said second outer edge portion;
- and a filter container connected to said supply-side lid and said discharge-side lid and covering a side surface of said filter;
- said filter being fixed by said first flange and said second flange, via said first seal member and said second seal member;
- and
- the maximum of a gap between the side surface of said filter and said housing being equal to or less than the equivalent diameter of said flow paths, wherein said equivalent diameter is a value determined by measuring the cross section areas and peripheral lengths of 10 or more arbitrary flow paths in a cross section perpendicular to the longitudinal direction of said filter, averaging them to obtain the average cross section area and average peripheral length of said flow paths, and dividing a fourfold value of said average cross section area of the flow paths by said average peripheral length.
Dependencies are inferred from the claim text.