MEMBRANE-ELECTRODE ASSEMBLY, ELECTROLYTIC UNIT USING THE SAME, ELECTROLYTIC WATER EJECTING APPARATUS, AND METHOD OF STERILIZATION

• US 20080067078A1
• Filed: 09/20/2007
• Published: 03/20/2008
• Est. Priority Date: 09/20/2006
• Status: Active Grant

• Current Assignee: De Nora Permelec Ltd. (Industrie De Nora S.p.A), Institute of National Colleges of Technology Japan
• Original Assignee: Permelec Electrode, Ltd. (Industrie De Nora S.p.A), Institute of National Colleges of Technology Japan
• Inventors: HAMAGUCHI, Katsumi, TANAKA, Hozumi, YAMANE, Genzo, SEKIDO, Kota, FURUTA, Tsuneto, KITAORI, Noriyuki, NISHIKI, Yoshinori
• Granted Patent: US 7,964,068 B2
• Time in Patent Office: Days
• US Class Current: 205/746
• CPC Class Codes: A61L 2/0088 Liquid substances
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61L 2/183 Ozone dissolved in a liquid
• CPC Class Codes: A61L 2/186 Peroxide solutions
• CPC Class Codes: A61L 2202/11 Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
• CPC Class Codes: A61L 2202/15 Biocide distribution means, e.g. nozzles, pumps, manifolds, fans, baffles, sprayers
• CPC Class Codes: C02F 1/4618 for producing "ionised" acidic or basic water
• CPC Class Codes: C02F 1/66 by neutralisation; pH adjustment for degassing C02F1/20; using ion-exchange C02F1/42; for flocculation or precipitation of suspended impurities C02F1/52; for removing dissolved compounds C02F1/58
• CPC Class Codes: C02F 2001/46138 Electrodes comprising a substrate and a coating
• CPC Class Codes: C02F 2001/46152 characterised by the shape or form
• CPC Class Codes: C02F 2201/003 Coaxial constructions, e.g. a cartridge located coaxially within another
• CPC Class Codes: C02F 2201/46115 Electrolytic cell with membranes or diaphragms
• CPC Class Codes: C02F 2201/46125 Electrical variables
• CPC Class Codes: C02F 2305/04 Surfactants, used as part of a formulation or alone
• CPC Class Codes: C25B 1/13 Ozone
• CPC Class Codes: C25B 11/02 characterised by shape or form
• CPC Class Codes: C25B 13/02 characterised by shape or form

Abstract

The present invention provides: a membrane-electrode assembly having a first electrode having a shape of a rod-form or a cylindrical-form, a strip-form diaphragm covering the periphery of the first electrode, and a second electrode disposed on a surface of the strip-form diaphragm; an electrolytic unit containing the membrane-electrode assembly; an electrolytic water ejecting apparatus containing the electrolytic unit; and a method of sterilization using the membrane-electrode assembly.

Claims

1. A membrane-electrode assembly comprising:

a first electrode having a shape of a rod-form or a cylindrical-form;

a strip-form diaphragm covering the periphery of the first electrode; and

a second electrode disposed on a surface of the strip-form diaphragm.

2. The membrane-electrode assembly of claim 1,

wherein the strip-form diaphragm covers the periphery of the first electrode so as to form a space between parts of the diaphragm.

3. The membrane-electrode assembly of claim 1,

wherein the strip-form diaphragm spirally covers the periphery of the first electrode.

4. An electrolytic unit comprising:

a membrane-electrode assembly comprising;

a first electrode having a shape of a rod-form or a cylindrical-form;

a strip-form diaphragm covering the periphery of the first electrode; and

a second electrode disposed on a surface of the strip-form diaphragm;

a tube, the membrane-electrode assembly being fixed in the tube; and

an electric supply terminal connected to at least one of the first electrode and the second electrode in the tube.

5. An electrolytic water ejecting apparatus comprising:

a vessel containing a raw water;

the electrolytic unit according to claim 4;

a head to eject an electrolytic water prepared by electrolyzing the raw water with the electrolytic unit.

6. A method of sterilization with an electrolytic water, the method comprising:

electrolyzing a raw water with a membrane-electrode assembly comprising;

a first electrode having a shape of a rod-form or a cylindrical-form;

a strip-form diaphragm covering the periphery of the first electrode; and

a second electrode disposed on a surface of the strip-form diaphragm

to produce a electrolytic water; and

ejecting the electrolytic water to a substance to be sterilized.