Filter and filter module
AssigneeNGK Insulators, Ltd.
InventorsKiyotaka Sugiura, Nobuhiro Aoki, Hiroyuki Oyachi
Life of this patent
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Abstract
The filter 1 of the present invention has at least two filter elements 2 contained in the casing 4, which are connected in series in such a state as interposing the first sealer 5 between them.
Claims14
A filter which has at least two filter elements having a substrate comprising a cylindrical porous body having many pores and having a plurality of cells as flow paths for untreated liquid and a filtering membrane comprising a porous body smaller in average pore diameter than that of the substrate and formed on the inner wall of a plurality of the cells, and said at least two filter elements are contained in a casing, wherein said at least two filter elements contained in the casing are connected in series in such a state as interposing a first sealer between them, and the first sealer separates liquid-tightly a plurality of the cells from a space formed between the outer peripheral surface of said at least two filter elements and the inner peripheral surface of the casing and does not hinder a plurality of the cells of said at least two filter elements from communicating with each other.
A filter module in which a filter element having a substrate comprising a cylindrical porous body having many pores and having a plurality of cells as flow paths for untreated liquid and a filtering membrane comprising a porous body smaller in average pore diameter than that of the substrate and formed on the inner wall of a plurality of the cells is contained in a hollow cylindrical case having flanges at both end parts, wherein the filter element is contained in the hollow cylindrical case in such a state as both end faces being supported by a supporting plate and a first sealer is interposed between the filter element and the supporting plate;
- the supporting plate has a first opening communicating with a plurality of the cells of the filter element and a second opening communicating with a space formed between the outer peripheral surface of the filter element and the inner peripheral surface of the hollow cylindrical case;
- and the first sealer liquid-tightly separates a plurality of the cells from the space formed between the outer peripheral surface of the filter element and the inner peripheral surface of the hollow cylindrical case and does not hinder a plurality of the cells of the filter element and the first opening from communicating with each other.
11-12. (canceled)
A filter having at least two filter modules which are connected in series;
- each of said at least two filter modules comprising a filter element having a substrate comprising a cylindrical porous body having many pores and having a plurality of cells as flow paths for untreated liquid and a filtering membrane comprising a porous body smaller in average pore diameter than that of the substrate and formed on the inner wall of a plurality of the cells is contained in a hollow cylindrical case having flanges at both end parts, wherein the filter element is contained in the hollow cylindrical case in such a state as both end faces being supported by a supporting plate and a first sealer is interposed between the filter element and the supporting plate;
- the supporting plate has a first opening communicating with a plurality of the cells of the filter element and a second opening communicating with a space formed between the outer peripheral surface of the filter element and the inner peripheral surface of the hollow cylindrical case;
- and the first sealer liquid-tightly separates a plurality of the cells from the space formed between the outer peripheral surface of the filter element and the inner peripheral surface of the hollow cylindrical case and does not hinder a plurality of the cells of the filter element and the first opening from communicating with each other, wherein said at least two filter modules are connected in series in such a state as interposing a third sealer and a fourth sealer between them, the third sealer liquid-tightly separates the first opening from the second opening of the supporting plate constituting said at least two filter modules and does not hinder the first openings of said at least two filter modules from communicating with each other, and the fourth sealer liquid-tightly separates the second opening of the supporting plate constituting said at least two filter modules from the external space of the filter modules and does not hinder the second openings of said at least two filter modules from communicating with each other.
Dependencies are inferred from the claim text.