JP3694042B2 - Electrolyzed water generator - Google Patents

Description

[0001]
[Industrial application fields]
The present invention raw water, such as water or saline relates electrolytic water generation apparatus for generating electrolysis to the electrolytic water between the anode and the cathode.
[0002]
[Prior art]
Conventionally, for example, inside it has been partitioned into an anode chamber and a cathode chamber by a diaphragm, each of these anode chamber and the cathode chamber includes an arranged underneath electrolytic tank so as to face each other with positive electrode and negative electrode, continuously introducing treatment water from the treated water inlet pipe explicitly electrode chamber and the cathode chamber, the in electrical degradation to the anode chamber to be treated water supplied between the electrodes to which a DC voltage is applied process to generate electrolytic water containing an acidic ion in water, in the negative electrode chamber to produce electrolytic water containing alkaline ions in the water to be treated, to derive the subsequently electrolyzed electrolytic water from the electrolytic water discharge pipe Such an electrolyzed water generating apparatus is well known.
[0003]
[Problems to be solved by the invention]
Where, in the above electrolytic cell so treated water is flowing in one direction toward the electrolytic water outlet pipe from the treatment water inlet pipe, in the vicinity of the treatment water inlet pipe water to be treated is almost electrolyzed not but increasing its electrical conductivity progressed electrolysis of the for-treatment water toward the electrolytic water guide extraction tube, the electric conductivity in the vicinity of electrolytic water guide extraction pipe is maximum. When the current density flowing from the positive electrode to the negative electrode at a certain position between the two electrodes is J (other conditions are constant), J is expressed by the following equation 2
[0004]
[Expression 2]
J = (voltage × electrical conductivity) / distance between electrodes. Here, since the distance between the electrodes is constant, the current density J increases as to approximately the electrolytic water guide extraction tube. Therefore, since the current flowing through the treated water is large enough electrolyzed water guide extraction tube side, in such electrolytic cells, electrodeposition than the electrode surface of the vicinity of the treated water inlet pipe towards the electrode surface in the vicinity of the electrolytic water guide extraction tube it takes a large stress due to the movement of the valence, therefore it got deteriorated considerable degree the electrode surface in the vicinity of the electrolytic water guide extraction tube even when no electrodes in the vicinity of the treatment water inlet pipe so much deteriorated, the electrolytic water guide The life of the electrode itself is determined by the deterioration of the electrode surface near the outlet tube, and the durability of the electrode is impaired.
[0005]
OBJECT OF THE INVENTION
The present invention, in order to solve the above SL problems, and an object thereof is to improve the durability of the to electrodes the degree of deterioration of the electrode surface constant.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention forms an electrode chamber by arranging a positive electrode and a negative electrode, to which a DC voltage is applied, facing each other, and forms water to be treated from one end between the two electrodes. In an electrolyzed water generating apparatus having an electrolyzer that continuously introduces and electrolyzes electrolyzed electrolyzed water from the other end between the electrodes, water to be treated in the electrolysis chamber is continuously introduced. electrolytic water generation apparatus a DC being characterized in that to increase the distance between the electrodes electrolytic water treated by electrolysis in the electrolysis chamber than the spacing between the electrodes located on the side is located on the side to be discharged A positive electrode and a negative electrode to which a voltage is applied are arranged opposite to each other to form an electrode chamber, and water to be treated is continuously introduced from one end between the two electrodes and from the other end between the two electrodes. electrolytic aquatic including the electrolytic tank for continuously discharging the electrolyzed electrolytic water In the apparatus, the said electrolysis chamber electrolytic water treatment water is treated by electrolysis in the electrolysis chamber than the spacing between the electrodes located on the side which is introduced continuously in is located on the side to be discharged It is an object of the present invention to provide an electrolyzed water generating device characterized in that an interval between electrodes is increased.
[0007]
The practice of the present invention, the distance between the electrodes of the person who is treated water inlet pipe connected to the σin electrical conductivity between a and two electrodes, whereas the direction which electrolytic water guide extraction pipe is connected Where b is the distance between the two electrodes and σout is the electric conductivity between the two electrodes,
[Equation 3]
(B / a) ≈ (σ out / σ in )
It is desirable to satisfy.
[0009]
[Operation and effect of the invention]
Oite the electrolytic water generation apparatus of the present invention constructed as above SL, even if there is a gradient in the electrical conductivity of the treated water flowing between both electrodes, both electrodes, the water to be treated inlet pipe connected the interval between the square of the inter-electrode of the person who electrolytic water guide extraction pipe is connected than the distance between the electrodes is arranged to be larger, according to the number 2 relationship, the treatment water inlet pipe difference in current density J in the vicinity of and around the electrolytic water guide decane, spacing between electrodes is less than the difference between the current density J in the case of a constant. Therefore, according to the present invention, the difference in degree of degradation of the electrode surface in the vicinity of the electrolytic water guide extraction pipe water to be treated inlet pipe near the electrode surface is reduced, it is possible to improve the durability of the resulting electrode.
[0010]
Then the two electrodes at this time, the number of the 3: (b / a) ≒ (σout / σin) relationship (a spacing between the electrodes towards the treated water inlet pipe is connected, b electrolytic water spacing between the electrodes towards the electrically extraction pipe is connected, Shigumain the electric conductivity between the electrodes towards which the treated water inlet pipe is connected, Shigumaout both those who electrolytic water guide extraction pipe is connected if arranged so as to satisfy the electrical conductivity) between the electrodes, the difference between the current density J of the vicinity of the electrolytic water guide extraction pipe and the vicinity of the treated water inlet pipe almost no, i.e. the electrode surface in the vicinity of the treated water inlet pipe and the difference between the significant degree of degradation of the electrode surface in the vicinity of the electrolytic water guide extraction pipe is eliminated, the effect of improving the durability of the electrode further increases.
[0011]
【Example】
Hereinafter, the present invention will be described with reference to the drawings.
FIG. 1 shows an embodiment of the electrolyzed water generating apparatus of the present invention. In this electrolyzed water generator, the inside of the electrolytic cell body 11 is partitioned into an anode chamber 13 and a cathode chamber 14 by a diaphragm 12, and a positive electrode 15 and a negative electrode 16 are provided in the anode chamber 13 and the cathode chamber 14, respectively. An electrolytic cell 10 is provided so as to face each other. The electrodes 15 and 16 are connected to a DC power source (not shown), and the treated water supplied to the electrode chambers 13 and 14 is electrolyzed between the electrodes 15 and 16, respectively. It is configured to produce water.
[0012]
At one end of the anode chamber 13 and the cathode chamber 14 of the electrolytic cell 10, water to be treated (diluted brine having a salt concentration of 0.05 to 0.14%) for electrolysis is supplied to the water to be treated. (not shown.) using a from the pump is a path to be introduced treatment water inlet pipe 20 is, that is connected to branch to the conductive pipe 20a及beauty guide pipe 20b. Also, the acid water outlet pipe 21 for deriving the acidic water produced by electrolysis at the other end of the anode chamber 13 is likewise alkaline produced by electrolysis at the other end of the cathode chamber 14 An alkaline water outlet pipe 22 for connecting water is connected.
[0013]
Positive electrode 15 and negative electrode 16 in the electrolytic water generation apparatus of this embodiment, the number of the 3: (b / a) ≒ (σout / σin) relationship (a is the treatment water inlet pipe 20a, 20b is connected It has been towards space between the electrodes 15 and 16 of, b the distance between the electrodes 15 and 16 towards which the electrolytic water guide extraction pipe 21 is connected, Shigumain the treated water inlet pipe 20a, 20b is connected has been towards the electrical conductivity between the electrodes 15 and 16 of, Shigumaout is disposed so as to satisfy the electrical conductivity) between the electrodes 15 and 16 towards which the electrolytic water guide extraction pipe 21 and 22 are connected Yes.
[0014]
In forming the electrolytic water by performing electrolysis between the two electrodes 15 and 16 while supplying water to be treated using the thus configured electrolytic water generation apparatus, the both electrolytic chambers 13 and 14 treated water, treated water inlet pipe 20a, although not nearly electrolysis near 20b, the electrical progressed electrolysis of the for-treatment water toward the acidic water guide extraction pipe 21 and alkaline water guide extraction tube 22 increased conductivity, electrical conductivity is the largest in the vicinity of acidic water guide extraction pipe 21 and alkaline water guide extraction tube 22. However, as described above, the positive electrode 15 and the negative electrode 16 are arranged so as to satisfy the relationship of the above equation 3: (b / a) ≈ (σout / σin). obviously, the treatment water inlet pipe 20a, the difference between the current density J and around the vicinity of the electrolytic water guide extraction tube 21, 22 20b hardly, i.e. treatment water inlet pipe 20a, in the vicinity 20b electrodes 15 and 16 significant difference degree of deterioration of the surface and the electrolytic water guide extraction tube 21 near the electrodes 15 and 16 surface does not occur. Therefore, the durability of the electrode can be improved.
[0015]
In the above embodiment, the electrolytic cell 10 of the type in which the inside of the electrolytic cell main body 11 is divided into the anode chamber 13 and the cathode chamber 14 by the diaphragm 12 is used as the electrolytic cell, but there is no diaphragm and the electrode chamber inside the electrolytic cell main body. However, a one-chamber type electrolytic cell may be used. In the case of using this type of electrolyzer, the electrolyzed water generating device includes one treated water introduction pipe and one electrolyzed water discharge pipe.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an electrolyzed water generating apparatus according to an embodiment of the present invention.
[Explanation of symbols]
10 ... the electrolytic cell, 12 ... diaphragm, 13 ... anode chamber, 14 ... cathode chamber, 15 ... positive electrode, 16 ... cathode, 20, 20a, 20b ... treatment water inlet pipe, 21 ... acidic water outlet pipe, 22 ... Alkaline water outlet tube.

Claims (3)

A positive electrode and a negative electrode to which a DC voltage is applied are arranged oppositely to form an electrode chamber, and water to be treated is continuously introduced from one end between the two electrodes, and the other end between the two electrodes. In the electrolyzed water generating apparatus provided with an electrolyzer that continuously discharges electrolyzed electrolyzed water from
Between the electrodes of the electrolyte chamber electrolytic water treatment water is treated by electrolysis in the electrolysis chamber than the spacing between the electrodes located on the side which is introduced continuously in is located on the side to be discharged An electrolyzed water generating device characterized in that the interval is increased. A positive electrode and a negative electrode, to which a DC voltage is applied, are arranged opposite to each other through a diaphragm to form a cathode chamber as an anode chamber, and water to be treated is continuously introduced from one end between the electrodes. In the electrolyzed water generating device comprising an electrolyzer that continuously discharges electrolyzed electrolyzed water from the other end between the electrodes ,
The electrode located on the side where the two electrolysis chambers electrolytic water treatment water is treated by electrolysis in the two electrolysis chambers than the spacing between the electrodes located on the side which is introduced continuously in is discharged The electrolyzed water generating apparatus characterized by increasing the interval between them. The distance between the electrodes located on the side where the treated water is continuously introduced is a, and the electrical conductivity between the electrodes is σin, while the both electrodes located on the side where the electrolyzed water is derived 3. The electrolyzed water generating device according to claim 1, wherein the following equation 1 is satisfied, where b is an interval between them and σout is an electric conductivity between the electrodes.
[Expression 1]
(B / a) ≒ (σout / σin)

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