Method and apparatus for production of electrolyzed water

Inactive Publication Date: 2009-01-08
HOSHIZAKI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]In the method and apparatus for producing electrolyzed water, the electrolytic cell is controlled at a first mode of operation in such a manner as to supply the same amount of solution of inorganic salt into the electrolytic chambers and to discharge the same amount of electrolyzed water from the electrolytic chambers. The electrolytic cell is controlled at a second mode of operation in such a manner as to supply the same amount of diluted solution of inorganic salt into the electrolytic chambers and to reduce an amount of electrolyzed water discharged from the cathode side chamber less than that from the anode side chamber.
[0014]At the first mode of operation, the electrolyzed water does not flow through the water permeable membrane from one of the electrolytic chambers to the other because of no difference in pressure between the electrolytic chambers. Thus, the electrolyzed strong acid water from the anode side chamber is discharged without being adjusted its pH. When the electrodes in the electrolytic chambers are applied with an electric current at the same value at the first mode of operation, it is not required to apply high voltage to the electrodes. Thus, the amount of electricity can be reduced to enhance the electric efficiency in operation.
[0015]In operation of the electrolytic cell at the first mode, chloride ion and hydroxide ion react on the surface of the anode side electrode. If the voltage between the electrodes is excessive in operation as in a conventional electrolytic cell, the reaction of chloride ion becomes less than that of hydroxide ion. As a result, the effective chlorine concentration of electrolyzed acid water is enhanced more than that of electrolyzed acid water produced in a conventional manner.

Problems solved by technology

In the electrolyzed strong acidic water, chlorine component is vaporized as chlorine gas, causing pollution of the surrounding environment, particularly corrosion of appliances of the production apparatus.
For this reason, it is difficult to sufficiently solve the problem caused by vaporization of chlorine gas.
As a result, the source of electricity becomes large in size.
However, as the ion exchange membrane is substantially non water permeable, it is needed to apply high voltage to the anode and cathode electrodes to cause the flow of an electric current between them.
As a result, the source of electricity becomes large in size.

Method used

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  • Method and apparatus for production of electrolyzed water
  • Method and apparatus for production of electrolyzed water

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Embodiment Construction

[0019]The present invention relates to a method of simultaneously producing electrolyzed alkaline and acidic water by electrolysis of diluted solution of inorganic salt in an electrolytic cell with a partition membrane and to an electrolyzed water production apparatus for carrying out the production method of electrolyzed water. In FIG. 1, there is schematically illustrated an embodiment of an electrolyzed water production apparatus in accordance with the present invention.

[0020]The electrolyzed water production apparatus includes an electrolytic cell 10 of the type which is composed of a cell housing 10, a partition membrane 12 disposed within the cell housing 10 to subdivide the interior of cell housing 10 into a pair of electrolytic chambers R1, R2, and electrodes 13a, 13b arranged within the electrolytic chambers. The electrolytic chambers R1, R2 of electrolytic cell 10 are respectively connected at their upstream sides to water supply conduits 21a,21b and at their downstream si...

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Abstract

An electrolyzed water production apparatus including an electrolytic cell the interior of which is subdivided into an anode chamber and a cathode chamber by means of a partition member in the form of a water permeable membrane, wherein flow quantity control means is disposed in a discharge conduit to cause the flow of electrolyzed alkaline water from the cathode chamber into the anode chamber through the partition membrane.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a method of simultaneously producing electrolyzed alkaline water and acidic water by electrolysis of diluted solution of inorganic salt in an electrolytic cell with a partition membrane and to an electrolyzed water production apparatus for carrying out the production method of electrolyzed water.[0003]2. Discussion of the Prior Art[0004]Disclosed in Japanese Patent Publication No. 4-42077 is an apparatus for carrying out the production method of electrolyzed water described above. In the electrolytic cell used in the electrolyzed water production apparatus, a neutral ion-permeable membrane of non-water permeability is used as a partition membrane to subdivide the interior of the cell into an anode chamber and a cathode chamber. Disclosed in Japanese Patent Laic-open Publication No 2002-210466 is an electrolyzed water production apparatus including an electrolytic cell in which an anode-i...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B9/00
CPCC02F1/4618C02F2201/46115C02F2201/4611C02F1/4674
InventorACHIWA, NOBUO
OwnerHOSHIZAKI ELECTRIC CO LTD