JP2007136356A - Ozone water generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ozone water generator capable generating ozone water having a necessary concentration and enhancing the efficiency of generating the ozone water by effectively dissolving a generated ozone gas in raw water to ozonize it without preventing an increase in ozone concentration in a method for generating the ozone water by sinking a catalyst electrode in a water tank. <P>SOLUTION: The ozone water generator 100 comprises a container 1 filled with the raw water and the catalyst electrode 2 inserted into the container 1. The catalyst electrode 2 comprises a pillar-shaped rod member 20, a cathode electrode 23 successively superimposed and wound from the inner side so as to cover ditch parts 20a, 20a, ... formed by vertically passed through longitudinally along the outer peripheral face of the rod member 20, a cation exchange membrane 21, and an anode electrode 22. The ozone water is generated by applying a direct current voltage between the anode electrode 22 and the cathode electrode 23. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an ozone water generator that generates ozone water by electrolysis of water by inserting a rod-shaped catalyst electrode into a container filled with raw material water and bringing it into contact with the raw material water.

In recent years, the sterilization and deodorizing effects of ozone water are generally well known, and more and more reports on skin activation and beauty effects have been published both inside and outside of the country, increasing the demand for equipment using ozone water.
As an apparatus for generating ozone water, an apparatus utilizing a direct electrolysis method in which raw water is brought into direct contact with an electrolytic surface to generate ozone water has been put into practical use (for example, see Patent Document 1). However, since the apparatus based on the direct electrolysis method is large and expensive, it is more compact and inexpensive, and can generate ozone water having a necessary concentration and can be used in a familiar manner. Is required.
For example, the demand for the simplest ozone water generator is that if you can fill raw water in a small cup or a small tank of 1 to 2L and turn it into ozone water as it is, use ozone water closer to our daily lives. It becomes possible to do. In particular, gargle of 2 to 3 ppm of ozone water is the best method for preventing influenza infection, which has been exposed to the threat of infection recently, but it is easy to use gargle ozone in each home as well as in hospitals and public places. If there is a water generator, it is thought that it can greatly contribute to prevention of infection. In addition, there is a report that rinsing with ozone water is effective in treating periodontal diseases that many people are suffering from. In addition, if the water in a small water tank of about 1 to 3 L can be easily converted into ozone water, it can be applied to an air purifier having a circulation filter and used for indoor deodorization caused by pets. Such a simple ozone water generator was not available.
Therefore, recently, a method of obtaining low-concentration ozone water of less than 1 ppm by immersing an electrolytic ozone generating electrode (catalyst electrode) naked in a small water tank and dissolving ozone gas generated from the anode electrode in water. Has been successful.
JP-A-8-134678

However, the method of generating ozone water by nakedly sinking the catalyst electrode in the water tank can obtain ozone water in a very small 100 to 200 ml water tank, but when the water tank is enlarged to 500 ml to 1 L, There was a phenomenon in which the ozone concentration did not rise easily and the water temperature immediately exceeded 30 ° C. As a result, there was a problem that ozone water having a necessary concentration could not be obtained.
Therefore, the present invention has been made in view of the above circumstances, and in a method for generating ozone water by sinking a catalyst electrode in a water tank, the generated ozone gas is effectively contained in the raw material water without hindering an increase in ozone concentration. It aims at providing the ozone water production | generation apparatus which can produce | generate ozone water of required density | concentration by melt | dissolving and making it ozone water, and can improve ozone water production | generation efficiency.

The present inventors pay attention to the fact that the ozone concentration decays faster than the ozone water produced by other conventional methods, and the ozone water produced by the bare electrode method is generated from the cathode electrode of the bare catalyst electrode. The hydrogen contained in the water moves into the water surface and is diffused in the air, so it was thought that it does not inhibit ozone generation, but the Electrochemical Society presented (The 26th Electrolysis Technology Conference ( (Soda Industrial Technology Conference) November 28, 2002) When the hydrogen concentration in the electrolyzed water was supersaturated, it was found that a part of the aqueous solution existed in the water for a long time as a hydrophobic colloid. .
Therefore, as a result of investigating the behavior of water near the cathode electrode in the bare electrode method, it was confirmed that hydrogen was partially supersaturated and that many hydrogen fine particles existed in the water that could not be observed with the naked eye. As a result, the rise in water temperature when the water tank is enlarged is not only due to Joule heat generated from the electrodes, but also due to reaction heat generated by reacting with fine ozone gas bubbles generated by suspended hydrogen fine particles. As a result, it was found that the increase in ozone concentration is the main reason for the hindrance.

Therefore, in order to solve the above problem, the invention of claim 1 is, for example, as shown in FIGS.
A container 1 filled with raw water, and a catalyst electrode 2 inserted into the container,
The catalyst electrode was wound in an overlapping manner in order from the inside so as to cover the columnar rod-shaped member 20 and the grooves 20a, 20a,... Formed vertically penetrating along the longitudinal direction on the outer circumferential surface of the rod-shaped member. A cathode electrode, a cation exchange membrane, and an anode electrode,
Ozone water is generated by applying a DC voltage between the anode electrode and the cathode electrode.

According to the first aspect of the present invention, the catalyst electrode comprises a cathode electrode, a cation exchange membrane, and an anode electrode so as to cover a groove formed in the outer peripheral surface of the columnar bar-like member so as to penetrate vertically along the longitudinal direction. Since the anode electrode is arranged on the outermost periphery and has a large exposed area, most of the raw material water comes into contact with the anode electrode, and ozone gas is efficiently emitted from the anode electrode. Ozone water is generated by generating and dissolving ozone gas in the raw material water.
On the other hand, since the cathode electrode is directly wound around the outer peripheral surface of the rod-shaped member so as to cover the groove portion on the outer peripheral surface of the rod-shaped member, hydrogen bubbles generated when the cathode electrode comes into contact with the raw material water that has entered the groove portion Rises in the groove and is released out of the system. That is, hydrogen bubbles can be discharged out of the container without contacting with most of the raw water in the container. Therefore, the ozone gas generated from the anode electrode is effectively dissolved in water without being hindered by hydrogen bubbles, compared to the case where the bare electrode with the anode electrode and the cathode electrode exposed is immersed in the water tank as in the prior art. Can be made into ozone water. As a result, attenuation of ozone concentration can be suppressed, and ozone water generation efficiency can be improved. Moreover, ozone water can be easily generated by inserting the catalyst electrode into the container.

The invention of claim 2 is, for example, as shown in FIG.
A container filled with raw water, and a catalyst electrode 2A inserted into the container,
The catalyst electrode has an inner side so as to cover a rod-like member 20A having a cavity penetrating vertically inside and a plurality of through holes 20c, 20c,... Formed in the outer peripheral surface of the rod-like member so as to penetrate the cavity 20b. Comprising a cathode electrode 23, a cation exchange membrane 21, and an anode electrode 22 wound in an overlapping manner in order,
Ozone water is generated by applying a DC voltage between the anode electrode and the cathode electrode.

According to the second aspect of the present invention, the catalyst electrode has a cathode electrode, a cation exchange membrane, and an anode electrode in this order so as to cover the plurality of through holes on the outer peripheral surface of the rod-shaped member having a cavity penetrating vertically. Since the anode electrode is arranged on the outermost circumference and has a large exposed area, the raw material water comes into contact with the anode electrode, ozone gas is generated from the anode electrode, and ozone gas is the raw material. Ozone water is generated by dissolving in water.
On the other hand, the cathode electrode is directly wound around the outer peripheral surface of the rod-shaped member so as to cover the through-hole on the outer peripheral surface of the rod-shaped member, so that it contacts the raw material water that has entered through the through-hole from the cavity of the rod-shaped member, Compared to the anode electrode, the area in contact with the raw material water is small, and the hydrogen bubbles generated at the cathode electrode rise through the through-holes in the cavity of the rod-shaped member and are discharged out of the system. That is, hydrogen bubbles can be discharged out of the container without contacting the raw material water in the container. Therefore, the ozone gas generated from the anode electrode is effectively dissolved in water without being hindered by hydrogen bubbles, compared to the case where the bare electrode with the anode electrode and the cathode electrode exposed is immersed in the water tank as in the prior art. Can be made into ozone water. As a result, attenuation of ozone concentration can be suppressed, and ozone water generation efficiency can be improved. Moreover, ozone water can be easily generated by inserting the catalyst electrode into the container.

The invention of claim 3 is an ozone water generator according to claim 1 or 2, as shown in FIGS.
A cylindrical member (cylindrical member 3) for fixing the cathode electrode, the cation exchange membrane and the anode electrode to the rod-shaped member is inserted into the catalyst electrode.

  According to the invention of claim 3, since the cylindrical member is inserted through the catalyst electrode, the anode electrode, the cation exchange membrane and the cathode electrode are securely fixed to the rod-shaped member by the cylindrical member.

Invention of Claim 4 is the ozone water production | generation apparatus as described in any one of Claims 1-3,
A grating is provided on the outer peripheral surface of the anode electrode so as to cover the outer peripheral surface.

  According to the invention of claim 4, since the grating is provided on the outer peripheral surface of the anode electrode so as to cover the outer peripheral surface, the water flow contacts the grating to generate a vortex, and the ozone generated at the anode electrode is reduced. Bubbles can be involved to accelerate dissolution. As a result, the ozone water generation efficiency can be improved.

According to the present invention, the hydrogen bubbles generated in the cathode electrode rise in the groove portion or rise in the cavity through the through hole and are discharged outside the system, so that most of the raw material in the container Without contacting with water, ozone gas generated from the anode electrode can be effectively dissolved in water to make ozone water. As a result, attenuation of the ozone concentration can be suppressed, and the ozone water generation efficiency can be improved. Moreover, by inserting the catalyst electrode of the present invention into a container, ozone water can be easily generated even at home and the like, leading to the spread of ozone water.
Further, hydrogen bubbles generated from the cathode electrode and released to the outside of the system can be collected as they are, and can be reused by connecting to a fuel cell.

Hereinafter, first and second embodiments of the present invention will be described with reference to the drawings.
[First embodiment]
FIG. 1 is a perspective view of an ozone water generator 100 according to the first embodiment of the present invention.
As shown in FIG. 1, the ozone water generator 100 inserts and moves a rod-shaped catalyst electrode 2 in a container 1 filled with raw material water (for example, water) and applies a DC voltage to the catalyst electrode 2. This is a device for generating ozone water by generating ozone bubbles and dissolving the ozone bubbles in water.
The container 1 has a cylindrical shape with an upper end opened, and the container 1 is filled with raw water up to the vicinity of the upper end. Specifically, as the container 1, for example, a water tank, a beaker, a cup, or the like can be used.

2A is an external perspective view of the rod-shaped member 20 constituting the catalyst electrode 2, FIG. 2B is an external perspective view of the catalyst electrode 2, and FIG. 2C is a catalyst when cut along the cutting line II-II. 3 is a cross-sectional view of the electrode 2 as viewed in the direction of the arrows.
The catalyst electrode 2 includes a columnar rod-shaped member 20, and a cathode electrode 23, a cation exchange membrane 21, and an anode electrode 22 that are provided on the outer circumferential surface of the rod-shaped member 20 in order along the outer circumferential surface. .
The rod-shaped member 20 is preferably made of a material that is not easily oxidized or reduced by ozone or hydrogen. For example, Teflon (registered trademark) or nylon is used as the material. On the outer peripheral surface of the rod-shaped member 20, five grooves 20a, 20a,... Penetrating vertically along the longitudinal direction are formed at predetermined intervals, and the rod-shaped member 20 is covered so as to cover these grooves 20a, 20a,. A cathode electrode 23 is wound in a cylindrical shape on the outer peripheral surface of the electrode, a cation exchange membrane 21 is wound in a cylindrical shape on the cathode electrode 23, and an anode electrode 22 is wound in a cylindrical shape on the cation exchange membrane 21. Yes. Therefore, the catalyst electrode 2 inserted into the container 1 is configured such that most of the raw water contacts the surface of the anode electrode 22 located on the outermost periphery, and the cathode electrode 23 is formed on the rod-shaped member 20. It contacts the raw material water that has entered the grooves 20a, 20a,.

  A cylindrical member 3 that covers the outer peripheral surface is inserted into the outer peripheral surface of the catalyst electrode 2 formed as described above (that is, the outer peripheral surface of the anode electrode 22). Examples of the cylindrical member 3 include a shrink tube that is thermally contracted by heating. Therefore, after the catalyst electrode 2 is inserted into the shrink tube 3 and heated, the shrink tube 3 contracts, so that the cathode electrode 23, the cation exchange membrane 21 and the anode electrode 22 are fixed to the rod-shaped member 20. As a result, the grooves 20a, 20a,... Are reliably covered with the cathode electrode 23, so that hydrogen bubbles generated on the surface of the cathode electrode 23 are surely moved within the grooves 20a, 20a,. It has become.

  Further, an output terminal (not shown) of the power supply device is electrically connected between the anode electrode 22 and the cathode electrode 23 so that a DC voltage is applied. That is, the anode electrode 22 and the cathode electrode 23 are connected to the power supply device via the conductive wires to the electrodes 22 and 23. The DC voltage to be applied is preferably 9 to 15 volts (V), for example.

  As the cation exchange membrane 21, a conventionally known one can be used, and a fluorine-based cation exchange membrane having high durability against the generated ozone can be used. For example, a thickness of 100 to 250 microns is preferable.

As the anode electrode 22, a metal having an ozone generation catalyst function is used, and in order to obtain pure ozone water, it is preferable to use an electrode of platinum or a platinum-coated metal. In particular, in the present invention, titanium is coated with platinum. It is preferable to use a metal.
On the other hand, as the cathode electrode 23, silver having a silver chloride layer or a silver-coated metal is used. Silver chloride is also used as a reference electrode for ozone measurement, and can stably maintain the cathode potential without toxicity and can stably generate ozone at the anode electrode 22. Moreover, as a coating process, it can carry out by plating, electrodeposition, etc., for example.

Although not shown, it is preferable that a titanium grating is wound around the outer periphery of the anode electrode 22. Grating is obtained by welding wire rods in a lattice shape, and by winding the wire around the outer periphery of the anode electrode 22, an eddy current is generated in contact with the water flow by the uneven surface of the grating, and ozone fine bubbles generated at the anode electrode 22 are generated. Can be dissolved to accelerate dissolution. As a result, the ozone water generation efficiency is improved. The grating may be provided on the entire outer periphery of the anode electrode 22 or may be provided only on a portion inserted into the container 1. Moreover, you may provide in the location where the cylindrical member 3 is penetrated, and does not need to provide.
Further, the anode electrode 22 itself may be formed in a grating shape without providing the grating.

Next, the ozone water production | generation method which produces | generates ozone water using the ozone water production | generation apparatus 100 is demonstrated.
As shown in FIG. 1, the raw material water is filled in the container 1 in advance, the catalyst electrode 2 is inserted into the container 1, and the catalyst electrode 2 is moved by hand. As a result, a swirling water flow is generated in the container 1 along the inner peripheral surface. Here, most of the water flow is in continuous contact with the surface of the anode electrode 22, and part of the water flow enters the grooves 20 a, 20 a,.
At this time, a predetermined voltage is applied between the anode electrode 22 and the cathode electrode 23 by driving the power supply device. By this energization, the raw water is electrolyzed, ozone bubbles are generated on the anode electrode 22 side, and hydrogen bubbles are generated on the cathode electrode 23 side.

  On the anode electrode 23 side, ozone water generated by the swirling water flow is quickly taken into water and dissolved to generate ozone water, and between the anode electrode 22 and the cation exchange membrane 21 (more precisely, the anode electrode 22 and A state where a large amount of current flows between the cathode electrode 23 and the cathode electrode 23 is ensured.

On the other hand, on the cathode electrode 23 side, the hydrogen bubbles generated at the cathode electrode 23 are separated from the cathode electrode 23 and moved by the buoyancy in the grooves 20a, 20a,... Released outside. Since the groove portions 20a, 20a,... Are covered with the cathode electrode 23, hydrogen bubbles generated at the cathode electrode 23 have no escape space other than the groove portions 20a, 20a,... And rise along the groove portions 20a, 20a,. To do. As a result, it can be prevented that it is taken into raw material water or mixed with generated ozone water.
The ozone water produced as described above is not mixed with hydrogen gas, and the increase in ozone concentration is not hindered.

As described above, according to the first embodiment of the present invention, the catalyst electrode 2 covers the groove portions 20a, 20a,... Formed in the outer peripheral surface of the columnar rod-shaped member 20 so as to penetrate vertically along the longitudinal direction. In this way, the cathode electrode 23, the cation exchange membrane 21, and the anode electrode 22 are sequentially overlapped and wound, so that most of the raw material water comes into contact with the anode electrode 22 disposed on the outermost periphery, so that the anode electrode 22 Ozone gas is efficiently generated, and ozone water is generated by dissolving the ozone gas in the raw material water.
On the other hand, since the cathode electrode 23 is directly wound around the outer peripheral surface of the rod-shaped member 20 so as to cover the grooves 20a, 20a,. The hydrogen bubbles generated when the cathode electrode 23 comes into contact with water rises as they are in the grooves 20a, 20a,... Therefore, the ozone gas generated from the anode electrode 22 can be effectively dissolved in water without being hindered by hydrogen bubbles to be converted into ozone water. As a result, attenuation of ozone concentration can be suppressed, and ozone water generation efficiency can be improved. Moreover, by inserting such a catalyst electrode 2 into the container 1, ozone water can be easily generated even at home and the like, leading to the spread of ozone water. In addition, by collecting the hydrogen gas released outside the system, it can be reused in the fuel cell.

In the first embodiment, the catalyst electrode 2 is stirred by hand. However, for example, the catalyst electrode 2 may be moved by an apparatus using a motor or the like.
Further, as shown in FIG. 3, the container 1 may be moved by hand with respect to the catalyst electrode 2 without moving the catalyst electrode 2. Specifically, the catalyst electrode 2 is fixed by being suspended from above, the lower end portion is inserted into the container 1 so as to be in contact with the raw material water, and the container 1 is moved around the catalyst electrode 2.
Further, as shown in FIG. 4, a rotor such as a magnet stirrer 4 is provided on the bottom of the container 1, and a swirling water flow is generated in the container 1 using a stirring device 5 that stirs the magnet stirrer 4 with a magnetic force. Alternatively, the raw material water may be continuously brought into contact with the catalyst electrode 2.

Here, in the ozone water generating apparatus 100 described above, the effect is carried out when the catalyst electrode 2 is moved by hand (see FIG. 1) and when the magnet stirrer 4 and the stirring device 5 are used (see FIG. 4). An example will be described.
<Invention Example 1>
A cathode electrode, a cation exchange membrane and an anode electrode are wound around the outer peripheral surface of a 10 mm diameter Teflon rod in which six grooves having a depth of 2 mm are formed along the longitudinal direction on the outer peripheral surface, and the electrode area is about 10 cm ^2. The catalyst electrode 2 was prepared. Then, a 400 ml circular beaker was filled with water, a catalyst electrode was inserted therein, and a DC voltage of 12 V was applied between the anode electrode and the cathode electrode. Many fine bubbles were generated from the surface. When this electrode was circularly moved by hand, the ozone concentration in the beaker reached about 3 ppm in about 30 seconds.
<Comparative example 1>
As in the prior art, both the anode electrode and the cathode electrode were exposed, and a bare electrode made of the same material as that of the present invention example 1 and having an electrode area of about 10 cm ² was sunk and circularly moved by hand in the same manner. The value was about 3A, and the ozone concentration after 30 seconds increased only to 0.7 ppm.

<Invention Example 2>
A catalyst electrode similar to Example 1 of the present invention is prepared except that the electrode area is about 7 cm ² . A magnet stirrer is placed on the bottom surface of a circular container of about 3 L, and a stirring device is installed on the lower side of the container. Next, when the container is filled with water, a catalyst electrode is inserted therein, and a DC voltage of 12 V is applied between the anode electrode and the cathode electrode, a current of about 3 A flows, and a large number of currents flow from the surface of the anode electrode. A fine bubble was generated. When the magnetic stirrer was rotated, the ozone concentration reached about 1 ppm after 3 minutes, 1.5 ppm after 5 minutes, and about 2 ppm after 10 minutes, and then changed around this concentration.
<Comparative example 2>
As in the prior art, a catalyst electrode having both an anode electrode and a cathode electrode exposed and having an electrode area of about 7 cm ^{2 made} of the same material as Example 1 of the present invention is prepared. When the same experiment was conducted by submerging in the same container as Example 2, the concentration did not increase to 0.2 ppm after 3 minutes and 0.2 ppm after 5 minutes, and the water temperature was about 12 ° C. after 10 minutes. A phenomenon was observed in which the concentration was almost undetectable.

  As is clear from the above results, the method of generating ozone water by sinking the bare electrode in the container as in Comparative Examples 1 and 2 is the attenuation of the ozone concentration by the reaction between the hydrogen bubbles and the generated ozone gas. It is clear that this leads to And, by configuring so that hydrogen bubbles generated from the cathode electrode are discharged out of the system as in Invention Examples 1 and 2, ozone water having a required concentration can be easily and reliably generated without attenuation of the ozone concentration. It is recognized that you can.

[Second Embodiment]
5A is an external perspective view of the rod-like member 20A constituting the catalyst electrode 2A, FIG. 5B is an external perspective view of the catalyst electrode 2A, and FIG. 5C is a catalyst when cut along the cutting line VV. It is arrow sectional drawing of 2 A of electrodes.
In the ozone water generating apparatus of the second embodiment, a catalyst electrode 20A different from the catalyst electrode 2 of the first embodiment is used, and the other points are the same as in the first embodiment, and thus the same. Constituent parts are denoted by the same reference numerals and description thereof is omitted.
The catalyst electrode 2A includes a cylindrical rod-shaped member 20A provided with a hollow 20b penetrating vertically therein, a cathode electrode 23 provided on the outer circumferential surface of the rod-shaped member 20A in an overlapping manner along the outer circumferential surface, a positive electrode An ion exchange membrane 21 and an anode electrode 22 are provided.
A plurality of through-holes 20c, 20c,... Penetrating through the cavity 20b are formed at the lower end of the outer peripheral surface of the rod-shaped member 20A, and on the outer peripheral surface of the rod-shaped member 20 so as to cover these through-holes 20c, 20c,. A cathode electrode 23 is wound in a cylindrical shape, a cation exchange membrane 21 is wound on the cathode electrode 23 in a cylindrical shape, and an anode electrode 22 is wound on the cation exchange membrane 21 in a cylindrical shape. Therefore, the catalyst electrode 2 inserted into the container 1 is configured such that most of the raw material water contacts the surface of the anode electrode 22 located on the outermost periphery, and the cathode electrode 23 extends from the cavity 20b of the rod-shaped member 20A. It contacts the raw material water that has entered through the through holes 20c, 20c,.

  Further, the cylindrical member 3 covering the outer peripheral surface is inserted through the outer peripheral surface of the catalyst electrode 2A formed as described above (that is, the outer peripheral surface of the anode electrode 22). Examples of the cylindrical member 3 include a shrink tube that thermally contracts as in the first embodiment. Therefore, after the catalyst electrode is inserted into the shrink tube, the shrink tube is contracted by heating, so that the cathode electrode 22, the cation exchange membrane 21, and the anode electrode 22 are fixed to the rod-shaped member 20A. As a result, the through holes 20c, 20c,... On the outer peripheral surface of the rod-shaped member 20A are surely covered by the cathode electrode 23, so that hydrogen bubbles generated on the surface of the cathode electrode 23 reliably move to the through holes 20c, 20c,. Then, it is discharged out of the system from the cavity 20b of the rod-shaped member 20A.

Further, an output terminal (not shown) of the power supply device is electrically connected between the anode electrode 22 and the cathode electrode 23 so that a DC voltage is applied. That is, the anode electrode 22 and the cathode electrode 23 are connected to the power supply device via the conductive wires to the electrodes 22 and 23. The DC voltage to be applied is preferably 9 to 15 volts (V), for example.
In addition, since the material of the cation exchange membrane 21, the anode electrode 22, and the cathode electrode 23 is the same as that of 1st Embodiment, the description is abbreviate | omitted. Further, the above grating may be wound around the outer periphery of the anode electrode 22.

  As in the first embodiment, the ozone water generating apparatus equipped with such a catalyst electrode 2A moves the catalyst electrode 2A by hand, moves the container 1, or uses the magnetic stirrer 4 and the stirring device. Ozone water can be generated.

As described above, according to the second embodiment of the present invention, the catalyst electrode 2A has the cathode electrode 23, the cation so that the outer peripheral surface of the hollow rod-shaped member 20A covers the plurality of through holes 20c, 20c,. Since the exchange membrane 21 and the anode electrode 22 are wound one on top of the other in order, ozone gas is efficiently generated from the anode electrode 22 when most of the raw material water contacts the anode electrode 22 disposed on the outermost periphery. Is dissolved in the raw water to produce ozone water.
On the other hand, the cathode electrode 23 is directly wound around the outer peripheral surface of the rod-shaped member 20A so as to cover the through-holes 20c, 20c,... On the outer peripheral surface of the rod-shaped member 20A. , 20c,..., And hydrogen bubbles generated when the cathode electrode 23 comes into contact with the raw material water that has entered through the through holes 20c, 20c,. Then, it rises as it is in the hollow 20b of the rod-shaped member 20A and is discharged out of the system. Therefore, the ozone gas generated from the anode electrode 22 can be effectively dissolved in water without being hindered by hydrogen bubbles to be converted into ozone water. As a result, attenuation of ozone concentration can be suppressed, and ozone water generation efficiency can be improved. Moreover, by inserting such a catalyst electrode 2A into the container 1, ozone water can be easily generated even at home and the like, leading to the spread of ozone water. Moreover, by collecting the hydrogen gas released outside the system, it can be reused in the fuel cell.

In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary, it can change suitably.
For example, the flat cross-sectional shape of the rod-shaped members 20 and 20A of the first and second embodiments is circular, but may be rectangular, triangular, or the like. In addition, the number of grooves 20a, 20a,... And through holes 20c, 20c,.

Further, a concentration detection sensor for detecting the ozone concentration in the container 1 may be provided, and the power supply device may be configured to control energization to the catalyst electrodes 2 and 2A based on the detected ozone concentration.
Specifically, the concentration detection sensor includes a detection electrode and a reference electrode serving as a reference for potential measurement, a potentiometer connected to one end of the detection electrode and the comparison electrode to measure a potential, and the like. The tip (the other end) of the comparison electrode is immersed in the solution in the container, and the concentration is measured by detecting the potential difference between the detection electrode and the comparison electrode due to the ozone concentration change of the detection electrode.
As the detection electrode, for example, an electrode made of platinum or gold is preferably used, and silver / silver chloride is preferably used as the comparison electrode. The power supply device controls the voltage between the anode electrode 22 and the cathode electrode 23 so that the ozone concentration detected in this manner matches the preset ozone concentration.

It is a perspective view of ozone water generating device 100 of a first embodiment of the present invention. (a) is an external perspective view of the rod-shaped member 20 constituting the catalyst electrode 2, (b) is an external perspective view of the catalyst electrode 2, and (c) is the catalyst electrode 2 when cut along the cutting line II-II. FIG. It is the perspective view which showed the modification of the method of producing | generating ozone water using the ozone water production | generation apparatus 100. FIG. It is the perspective view which showed the modification of the method of producing | generating ozone water using the ozone water production | generation apparatus 100. FIG. (a) is an external perspective view of the rod-shaped member 20A constituting the catalyst electrode 2A of the ozone water generating apparatus according to the second embodiment of the present invention, (b) is an external perspective view of the catalyst electrode 2A, and (c) is a cut view. It is arrow sectional drawing of 2 A of catalyst electrodes at the time of cut | disconnecting along line VV.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 2, 2A Catalytic electrode 3 Cylindrical member 20, 20A Bar-shaped member 20a Groove part 20b Cavity 20c Through-hole 21 Cation exchange membrane 22 Anode electrode 23 Cathode electrode 100 Ozone water production | generation apparatus

Claims (4)

A container filled with raw water, and a catalyst electrode inserted into the container,
The catalyst electrode includes a columnar rod-shaped member, a cathode electrode wound on the outer peripheral surface of the rod-shaped member so as to cover a groove formed vertically through the longitudinal direction, and a cation It has an exchange membrane and an anode electrode,
An ozone water generating apparatus, wherein ozone water is generated by applying a direct current voltage between the anode electrode and the cathode electrode. A container filled with raw water, and a catalyst electrode inserted into the container,
The catalyst electrode was wound in an overlapping manner in order from the inside so as to cover a rod-shaped member having a cavity penetrating vertically inside and a plurality of through-holes formed through the cavity on the outer peripheral surface of the rod-shaped member. A cathode electrode, a cation exchange membrane, and an anode electrode,
An ozone water generating apparatus, wherein ozone water is generated by applying a direct current voltage between the anode electrode and the cathode electrode.   The ozone water generating apparatus according to claim 1 or 2, wherein a cylindrical member for fixing the cathode electrode, the cation exchange membrane and the anode electrode to the rod-shaped member is inserted into the catalyst electrode.   Grating is provided in the outer peripheral surface of the said anode electrode so that the outer peripheral surface may be covered, The ozone water generating apparatus as described in any one of Claims 1-3 characterized by the above-mentioned.

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