Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1993-08-02
1995-01-03
Valentine, Donald R.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204263, 204290F, C25B 900, C25B 1508, C25B 1110
Patent
active
053783395
DESCRIPTION:
BRIEF SUMMARY
FIELD OF TECHNOLOGY
The present invention relates to a water electrolyzer, and more precisely relates to a water electrolyzer, which comprises an electrolyzing tank, electrodes, which are mutually faced in the electrolyzing tank, and a porous partition provided between the electrodes, whereby alkali water is introduced from a cathode electrode.
BACKGROUND OF TECHNOLOGY
A conventional water electrolyzer, which electrolyzes raw water in an electrolyzing tank to alkali water and acid water by supplying electric power to electrodes in the electrolyzing tank, has been known. An example is disclosed in the Japanese Patent Publication No. 60-20073.
The water electrolyzer disclosed in the Japanese Patents has an electrolyzing tank whose inner space is divided into a cathode chamber and an anode chamber by a porous partition, and there is provided a rod-like electrode in each chamber so as to electrolyte raw water.
In the water electrolyzer, alkali water having higher pH value is electrolyzed in the cathode chamber when electric power is supplied to the rod-like electrodes.
However, it is impossible for the conventional rod-like electrodes to broaden surface area for electrolyzing raw water, so that the electrolyzing tank and the water electrolyzer including it must be larger.
Furthermore, the rod-like electrodes, which if used for a long time, are necessary to be replaced. Being a larger electrolyzing tank, it cannnot be replaced entirely, so the rod-like electrodes are replaced.
However, replacing only the rod-like electrodes is a complicated task, and maintenance work is difficult.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a water electrolyzer having higher electrolyzing efficiency than conventional water electrolyzers and being capable of compacting an electrolyzing tank in size.
Another object of the present invention is to provide a water electrolyze being capable of easily exchanging the compacted electrolyzing tank.
To achieve the object, the inventors of the present invention have found that: the surface area of the electrodes can be made broader by forming the electrodes into concentric cylinders, and the electrolyzing efficiency can be increased; and exchanging the electrolyzing tank can be easy by arranging an inlet for raw water, outlets for alkali and acid water and through-holes, through which said terminals pass, on same face of the electrolyzing tank.
The water electrolyzer of the present invention has the following structure: an electrolyzing tank, electrodes, which are mutually faced in the electrolyzing tank, and a porous partition provided between the electrodes, whereby alkali water is introduced from cathode electrodes; the electrodes are a first cylindrical electrode, a second cylindrical electrode which is concentrically arranged outside of the first cylindrical electrode, and a third cylindrical electrode which is concentrically arranged outside of the second cylindrical electrode; one of the adjacent cylindrical electrodes is a cathode and the other is an anode; and the surface area of the second cylindrical electrode is equal to the sum of surface area of the outer face of the first cylindrical electrode and the surface area of inner face of the third cylindrical electrodes.
The water electrolyzer of the present invention also has the following structure: an electrolyzing tank, electrodes, which are mutually faced in the electrolyzing tank, and a porous partition provided between the electrodes, whereby alkali water is introduced from a cathode of the electrodes; the electrodes are three cylindrical electrodes, which are concentrically arranged, one of the adjacent cylindrical electrodes is a cathode and another is an anode, each cylindrical electrode has a terminal on one end face, the partition is a cylindrical partition and is concetrically arranged between adjacent cylindrical electrodes; a branching plate for branching alkali water, which is formed on the cathode side, and acid water, which is formed on the anode side, to predetermined paths co
REFERENCES:
patent: 3801488 (1974-04-01), Okuhara et al.
patent: 3984303 (1976-10-01), Peters et al.
patent: 4169035 (1979-09-01), Stummer et al.
patent: 4426261 (1984-01-01), Fushihara
Aoki Kazuaki
Miyazawa Shozo
Tadokoro Tomio
Techno Excel Kabushiki Kaisha
Valentine Donald R.
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