JP5687789B1 - Electrolyzed water generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an environment in which chlorine gas and acidic water are easily in gas-liquid contact in an anode chamber, efficiently generate high-purity and high-concentration hypochlorous acid water, and enable long-term storage Providing a generation device. An aqueous electrolyte solution for supplying electrolyte ions to an anode chamber and a cathode chamber, which is provided between an anode chamber and a cathode chamber, and is provided between the anode chamber and the cathode chamber. An anion exchange membrane that separates the anode chamber and the front chamber, a cation exchange membrane that separates the cathode chamber and the intermediate chamber, and electrolyte ions provided on both sides of the anode and the cathode. An apparatus for generating electrolyzed water comprising an ionic stagnant body that stays in the vicinity of a cathode, wherein a plurality of anodes and / or cathodes are laminated with meshes having different line thicknesses and / or different meshes. The anode chamber is provided with a gas-liquid stirring body for stirring the acidic water generated in the anode chamber and the chlorine gas generated on the anode surface and floating in the acidic water. [Selection] Figure 1

Description

  The present invention relates to an electrolyzed water generator, and in particular, ensures an environment in which chlorine gas and acidic water are easily in gas-liquid contact in an anode chamber, and efficiently generates high-purity and high-concentration hypochlorous acid water. The present invention also relates to an electrolyzed water generator that can be stored for a long time.

  As an electrolyzed water generating apparatus for generating this type of hypochlorous acid water, as disclosed in Patent Document 1 and Patent Document 2, a diaphragm two-chamber type and a diaphragm three-chamber type are known. It has been.

  The diaphragm / two-chamber electrolyzed water generating apparatus includes an anode chamber and a cathode chamber that are arranged to face each other through an anion permeable membrane. The anode chamber is supplied with raw water mixed with saline, and is supplied to the cathode chamber. Only electrolytic raw water is supplied. Then, by applying a direct current to the electrode, acidic electrolyzed water containing hypochlorous acid is generated in the anode chamber, and alkaline electrolyzed water is generated in the cathode chamber.

  The diaphragm / three-chamber type electrolyzed water generating device includes an intermediate chamber in which an aqueous electrolyte solution is stored, a cathode chamber in which a cathode is disposed on one side of the intermediate chamber with a cation permeable membrane as a partition, and an opposite side across the intermediate chamber. It comprises an anode chamber in which an anode is disposed with an anion permeable membrane as a partition. This is an apparatus in which an anode chamber, an intermediate chamber, and a cathode chamber are provided by partitioning with two diaphragms. Electrolytic raw water is supplied to the anode chamber and the cathode chamber, and the intermediate chamber is filled with a high concentration electrolyte aqueous solution. . In the anode chamber, acidic electrolyzed water (hypochlorous acid water (HClO)) is generated, and in the cathode chamber, alkaline electrolyzed water is generated.

  The production principle of electrolytic hypochlorous acid water in the anode chamber will be described. First, chloride ions are derived from the anion permeable membrane. This chloride ion immediately draws an electron to the anode and becomes a chlorine atom. The chlorine atoms instantly combine with each other to form chlorine gas (Cl 2) bubbles in order to fill the vacancies of the atoms. This chlorine gas bubble has a property of being easily dissolved in water, and is discharged from the electrode surface into the anode chamber.

  On the other hand, the electrolyzed raw water supplied from the liquid supply port to the anode chamber is discharged from the anode chamber to the outside at a high speed within 0.02 seconds. In that short time, the water molecules in the electrolyzed water extract electrons to the anode, float as hydrogen and oxygen atoms, and exist as acidic water. Therefore, the above-mentioned chlorine gas bubbles are combined with oxygen and hydrogen or hydroxide ions contained in acidic water (in gas-liquid contact), and dissolved in acidic water to synthesize acidic hypochlorous acid water.

JP 2005-329375 A JP 2000-246249 A

However, such an electrolyzed water generator has the following problems.
Electrolyzed raw water instantaneously passes through the anode chamber, and as a result, chlorine gas generated in the anode chamber is also instantaneously undissolved and discharged from the anode chamber. There is a problem to be solved that reduces the efficiency of synthesis.

  In addition, since the raw electrolytic water passes through the anode chamber at a high speed, the efficiency of chloride ions passing from the electrolyte to the anode on the surface layer on both sides of the electrode is reduced, impeding the production of high-purity and high-concentration hypochlorous acid water. There is a problem to be solved.

  In addition, chlorine gas that cannot synthesize hypochlorous acid is discharged from the equipment due to the high-speed flow that hinders the gas-liquid contact between chlorine gas and acidic water, and the chlorine gas present in the generated acidic water floats on the surface of the acidic water. There is also a problem to be solved, such as volatilization and vaporization, and the room filled with chlorine gas.

  Furthermore, when chlorine gas is volatilized and vaporized, hypochlorous acid is vaporized in a short time, and it is difficult to secure the functions of sterilizing power and deodorizing power required for acidic hypochlorous acid for a long time. There is also a problem to be solved that the use is limited.

  Therefore, the present invention ensures an environment in which chlorine gas and acidic water are easily in gas-liquid contact in the anode chamber, efficiently generates high-purity and high-concentration hypochlorous acid water, and can be stored for a long time. An object of the present invention is to provide an apparatus for generating electrolyzed water.

In order to solve this problem, the present invention provides an anode and a cathode obtained by laminating a plurality of nets having different line thicknesses and / or different meshes, an anode chamber in which the anode is disposed, Provided on both surfaces of the cathode chamber in which the cathode is disposed, an anion exchange membrane provided between the anode chamber and the cathode chamber, a fixing plate for holding and fixing the anion exchange membrane, and the anode An ion reservoir that retains chloride ions around the anode, an electrolyte aqueous solution storage tank that stores an aqueous solution of the electrolyte supplied to the cathode chamber, and the anode chamber, and is generated in the anode chamber. A gas-liquid stirrer that stirs acidic water and chlorine gas that is generated on the surface of the anode and floats in the acidic water, and a sheet-like gauze having the ability to impregnate and hold the liquid by the ion retention body, The gas-liquid stirrer made of nonwoven fabric or paper Suggest generator of the electrolytic water which is characterized by comprising a sponge-like porous body.

In order to solve such problems, the present invention provides an anode and a cathode obtained by laminating a plurality of nets having different line thicknesses and / or different meshes, and an anode chamber in which the anode is disposed. A cathode chamber in which the cathode is disposed, and an intermediate chamber that is provided between the anode chamber and the cathode chamber and contains an aqueous electrolyte solution for supplying electrolyte ions to the anode chamber and the cathode chamber. A first partition made of an anion exchange membrane separating the anode chamber and the intermediate chamber, a second partition made of a cation exchange membrane separating the cathode chamber and the intermediate chamber, the anode and the cathode An ion retainer that is provided on both sides of the anode and retains the electrolyte ions around the anode and the cathode, and is disposed in the anode chamber, and is generated in the anode chamber and generated on the anode surface and the acid surface. The agitation of chlorine gas floating in water With a stirrer, a, wherein the ionic retention member is sheet-shaped gauze having the capability to hold the impregnating liquid consists of a nonwoven fabric or paper, said gas-liquid agitation body consisting of a spongy porous body We propose an electrolyzed water generator.

The anode and / or the cathode has at least two kinds of a mesh having a fine line and a fine mesh with a line thickness of 0.2 mm or less and a fine mesh with a mesh having a coarse mesh . It is characterized in that two or more nets are laminated.

The line is characterized by a titanium and stainless is a line that is the base material.

Lines constituting the anode of said line, characterized in that titanium is obtained by platinum or iridium plating was table surface and the base material.

  The gas-liquid stirrer is disposed throughout the anode chamber.

  The anode chamber is provided with a guide channel for guiding the raw electrolytic water.

  The guide channel groove is a wall formed alternately with a gap in the width direction of the anode chamber.

  The apparatus for producing electrolyzed water uses a rectifier capable of adjusting current and voltage.

  According to the present invention, the electrolysis apparatus is configured as described above, increasing the efficiency with which chlorine gas generated in the anode chamber is dissolved in the acidic water, and the chlorine water not dissolved in the acidic water is contained in the electrolytic water. Extremely reducing discharge to the outside, reducing evaporation of undissolved chlorine gas from the generated hypochlorous acid aqueous solution, and generating high purity and high concentration hypochlorous acid water with low power consumption be able to.

  It is a schematic diagram of the production | generation apparatus of the diaphragm 2 chamber type electrolyzed water which concerns on the 1st Embodiment of this invention.   It is a figure which shows an anode and a cathode, (a) is a figure which shows the mesh electrode knitted coarsely, (b) is a figure which shows the mesh electrode finely knitted, (c) is this coarse mesh mesh electrode and The figure which shows the state which laminated | stacked the mesh electrode of a fine mesh, (d) is a figure which shows the state which laminated | stacked this coarse mesh electrode and the fine mesh network electrode in the multilayer.   FIG. 3 is a schematic view of a cross section in which an anode which is a multilayer electrode shown in FIG.   It is a figure which shows the state which provided the wall in the anode chamber and made it the flow path groove of electrolyzed water.   It is a longitudinal cross-sectional view paying attention to the wall part of the anode chamber of FIG.   It is a figure which shows the state which took in the porous gas-liquid stirring body to the discharge port of the acidic water produced | generated in the anode chamber.   It is a schematic diagram which shows the structure of the modification 1 of the electrolyzed water generating apparatus which concerns on embodiment of this invention.   It is a schematic diagram which shows the structure of the modification 2 of the electrolyzed water generating apparatus which concerns on embodiment of this invention.   It is a schematic diagram which shows the structure of the modification 3 of the electrolyzed water generating apparatus which concerns on embodiment of this invention, and provided the gas-liquid stirring chamber shown in the modified example 1 in the diaphragm 2 chamber type electrolyzed water generating apparatus It is a schematic diagram which shows the example.   It is a schematic diagram which shows the structure which provided the O-ring of the electrolyzed water generating apparatus which concerns on embodiment of this invention.

Hereinafter, an electrolyzed water generating apparatus according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view of a diaphragm / three-chamber electrolyzed water generating apparatus (hereinafter referred to as “electrolytic apparatus”) according to the present embodiment.

  As shown in the figure, the electrolysis apparatus 10 includes an anode chamber 20, a cathode chamber 30, and an intermediate chamber 40. The intermediate chamber 40 is provided between the anode chamber 20 and the cathode chamber 30.

  The intermediate chamber 40 is filled with an aqueous electrolyte solution. The electrolyte used here is preferably sodium chloride (NaCl) or potassium chloride (KCl). In the electrolytic chamber aqueous solution supplied from the electrolytic aqueous solution storage tank 80 to the intermediate chamber 40 through the electrolytic aqueous solution supply port 50a, cations (sodium ions and potassium ions) are supplied to the cathode chamber 30 and anions (chloride ions). Is supplied to the anode chamber 20.

  The electrolyte aqueous solution (sodium chloride aqueous solution or potassium chloride aqueous solution) that has passed through the intermediate chamber 40 is returned to the electrolyte aqueous solution storage tank 80 via the electrolyte aqueous solution outlet 50b. The returned aqueous electrolyte solution may be reused and circulated, or as much electrolyte as consumed may be added to the intermediate chamber 40. The concentration of the aqueous electrolyte solution can be, for example, the saturation concentration of the electrolyte.

  The intermediate chamber 40 and the anode chamber 20 are separated by an anion exchange membrane 15a. Thereby, the cation in the intermediate chamber 40 does not pass through the anion exchange membrane 15a, and only the anion selectively passes through the anion exchange membrane 15a. A well-known thing can be applied to the anion exchange membrane 15a.

  The intermediate chamber 40 and the cathode chamber 30 are separated by a cation exchange membrane 15b. Thereby, the anion in the intermediate chamber 40 does not pass through the cation exchange membrane 15b, and only the cation selectively passes through the cation exchange membrane 15b. In addition, a well-known thing can be applied to the cation exchange membrane 15b similarly to an anion exchange membrane.

  The intermediate chamber 40 is provided with a porous fixing frame 45 for fixing the anion exchange membrane 15a and the cation exchange membrane 15b.

  The cathode 32 is connected to the − side of the DC power supply 70, and the anode 22 is connected to the + side of the DC power supply 70. The DC power supply 70 is configured to be able to arbitrarily set its voltage and current. For example, the DC power source 70 can be arbitrarily selected in the range of 5 to 20 volts, and the current can be appropriately selected and set in the range of 3 to 26 amperes.

  The anode 22 and the cathode 32 are reticulated multilayer electrodes in which a plurality of nets having different line thicknesses or different nets are laminated. In particular, in order to increase the current density, it is desirable to use an electrode in which at least two or more fine line mesh electrodes and thick line mesh electrodes are laminated. This improves electrical conductivity, enables low voltage and low current, makes it easy to dissolve in acidic water, away from fine lines in extremely fine chlorine gas bubbles that are easily dissolved in acidic water. Hypochlorous acid is synthesized, reducing the discharge of chlorine gas as undissolved, safe, high purity, high concentration hypochlorous acid water with less chlorine gas bubbles, and chlorine gas as undissolved Emission can be reduced.

  The mesh-like multilayer electrode has at least two kinds of fine meshes of 0.2 mm or less, preferably 0.2 to 0.01 mm and coarse meshes of 0.3 mm or more, preferably 1 to 3 mm. Two or more meshes of the above may be laminated, a wire made of titanium and stainless steel as a base material may be processed into a mesh shape, or a metal mesh may be laminated and crimp welded. It may be a porous porous body produced by sintering. The anode may be made of titanium as a base material and platinum or iridium plated on the surface.

  Further, for example, it can also be constituted by a slit having a width of about 0.2 mm and an electrode that has been processed to have a slit hole (fissure) elongated within 3 to 7 mm in width. Note that the cut (fissured) processed electrode has no area to be removed, and the loss of the electrode area can be reduced. A known material can be applied as the material of the electrode.

  The electrolyzer 10 is provided with a first water supply port 26 for supplying raw electrolytic water from the valve 60 to the anode chamber 20, and a second water supply port 36 for supplying water from the valve 60 to the cathode chamber 30. It has been. The first water supply port 26 and the second water supply port 36 are provided with water amount adjusting valves 26b and 38b for adjusting and supplying the amount of raw electrolytic water to the anode chamber 20 and the cathode chamber 30, respectively. By providing this water amount adjustment valve, the amount of electrolyzed water generated, pH, and hypochlorous acid concentration can be changed as appropriate.

  In addition, the electrolysis apparatus 10 is provided with a first discharge port 28 a for discharging the liquid in the anode chamber 20 and a second discharge port 38 a for discharging the liquid in the cathode chamber 30.

  The first discharge port 28 a is provided in the lower part of the anode chamber 20, and the first water supply port 26 is provided in the upper part of the anode chamber 20. Thereby, the raw electrolytic water supplied from the first water supply port 26 tends to flow from top to bottom. Therefore, bubbles made of gas (chlorine) generated at the anode 22 are pushed upward by the electrolytic raw water, and it is difficult to rise upward, and accordingly, the time for the gas (chlorine) to make gas-liquid contact with the electrolytic raw water becomes longer, Reaction to hypochlorous acid can be performed more reliably.

  On both surfaces of the anode 22 and the cathode 32, ion retention bodies 24 a and 24 b and 34 a and 34 b having high water content that retain ions (anions and cations) in the electrolytic raw water at room temperature and the aqueous electrolyte solution are anode 22 and cathode 32. It is provided so as to cover. Thereby, the electrolyzed raw water can be retained in the vicinity of both surfaces of the anode 22 and the cathode 32.

  The ion retention bodies 24a and 24b and 34a and 34b are porous and water-containing natural or synthetic sponges, water-containing gauze with a soft cloth coarsely woven with cotton, and water-containing materials such as paper towels. It is made of a sheet-like material having a predetermined thickness and having a performance of impregnating and holding a liquid, such as non-woven fabric or water-containing Japanese paper.

  By installing the ion retaining bodies 24a and 24b and 34a and 34b on both surfaces of the electrodes (the anode 22 and the cathode 32), the electrolytic raw water supplied to the electrode chambers (the anode chamber 20 and the cathode chamber 30) is contained in water. Thus, the flow of the electrolyzed raw water can be retained, and by this retention, the electrolytic ionic substance moving from the intermediate chamber 40 can be efficiently supplied to the vicinity of the electrode having a high electrolytic density and electrolyzed in each electrode chamber. Accordingly, it is possible to prevent the electrolytic ionic substance from being discharged without being electrolyzed.

  The anode chamber 20 is provided with a gas-liquid stirring body 207 made of a porous body in the anode chamber. This gas-liquid stirrer 207 is forcibly bringing the chlorine gas generated on the electrode surface into acid-liquid contact with gas and liquid. The gas-liquid contact dissolves the chlorine gas in acid water, and converts hypochlorous acid. Synthesize and reduce undissolved chlorine gas to ensure dissolution.

  The gas-liquid stirrer 207 is preferably a nylon nonwoven fabric or a sponge-like porous body, and is preferably disposed throughout the anode chamber 20. Further, this gas-liquid stirring body 207 may be provided in the discharge pipe 203 of the electrolytic acid water as will be described later.

2A and 2B are diagrams showing the anode 22 and the cathode 32, where FIG. 2A is a diagram showing a mesh electrode knitted with coarse eyes, FIG. 2B is a diagram showing a mesh electrode finely knitted, and FIG. The figure which shows the state which laminated | stacked the mesh electrode of a coarse mesh and the fine mesh mesh electrode, (d) is the figure which shows the state which laminated | stacked this coarse mesh electrode and the fine mesh mesh electrode in multiple layers.
Although not shown, in addition to the mesh electrodes shown in FIGS. 2 (a) and 2 (b), for example, a combination of electrodes knitted with thick lines and coarse electrodes, electrodes knitted with thick lines, and fine It is also possible to use a mesh electrode knitted into a mesh or a mesh electrode in which these are laminated in multiple layers. With this configuration, as described above, the electrical conductivity can be improved, low voltage and current can be achieved, and the fine gas lines can be separated from the fine lines in the extremely fine chlorine gas bubbles that are easily dissolved in acidic water. , It can be easily dissolved in acidic water.

FIG. 3 is a cross-sectional view in which the anode 22 which is the multilayer electrode shown in FIG. 2 is sandwiched between the ion retaining members 24a and 24b from both sides, and the gas-liquid stirring member 207 is combined on the opposite side of the anion permeable membrane 15b. FIG.
Thus, by providing the gas-liquid stirrer 207, the residence time in which fine bubbles of chlorine gas generated in the vicinity of the anode are forcibly stirred before being discharged from the anode chamber, and sufficient gas-liquid contact with the electrolytic acid water is possible. Can be easily dissolved.

FIG. 4 is a view showing a state in which a wall 205 is provided in the anode chamber 20 to form a flow channel 200 for electrolyzed water.
As shown in the drawing, the wall 205 is formed with a gap so that the length of the wall 205 is halfway in the width direction of the anode chamber 20. By alternately forming this, the flow path groove 206 of the electrolyzed raw water is formed to ensure the contact time between the electrolyzed raw water and the electrode, and even during the period from the supply port 26b to the discharge port 28a. I was able to electrolyze.

FIG. 5 is a longitudinal sectional view focusing on the wall 205 portion of the anode chamber 20 of FIG.
As shown in the figure, a porous gas-liquid stirring body 207 is provided in the anode chamber 20. Thereby, since the contact time of electrolysis raw water and an electrode is ensured reliably, electrolysis raw water can be electrolyzed more uniformly.

FIG. 6 is a view showing a state in which a porous gas-liquid stirring body 207 is introduced into the acidic water discharge port 28 a generated in the anode chamber 20.
In addition to providing the porous gas-liquid stirrer 207 in the anode chamber 20, by providing the gas-liquid stirrer 207 at the discharge port 28a, the contact time between the electrolytic raw water and the electrode is further ensured. Therefore, electrolysis raw water can be electrolyzed evenly. It should be noted that the gas-liquid stirring body 207 is provided only at the discharge port 28a.

  As described above, the electrolytic water flow channel is provided from the water supply port to the discharge port, the flow channel groove is forcibly passed, the gas-liquid stirring body made of a porous body is disposed in the flow channel, and chlorine gas is supplied. Many chlorine gas bubbles are dissolved in acidic water in the anode chamber by obstructing the linear flow of the contained acidic water, extending the residence time, turbulent, stirring and mixing, and making intense gas-liquid contact. Synthesize hypochlorous acid.

Next, the operation of the electrolysis apparatus 10 will be described.
First, the amount of water is adjusted by the water amount adjusting valves 26 b and 38 b and the electrolytic raw water is supplied to the anode chamber 20 and the cathode chamber 30. The amount of electrolyzed raw water is, for example, 0.5 to 1.5 l / min.

  Along with the supply of the electrolyzed raw water, a potential is applied between the anode 22 and the cathode 32 to perform electrolysis. For example, the voltage during electrolysis is 5 to 10 V, and the current is 3 to 10 amperes. When a potential is applied between the anode 22 and the cathode 32, cations (sodium ions or potassium ions) in the intermediate chamber 40 pass through the cation permeable membrane 15 b and move to the cathode chamber 30, while the negative ions in the intermediate chamber 40. Ions (chloride ions) pass through the anion permeable membrane 15 a and move to the anode chamber 20.

In the anode chamber 20, chloride ions cause a reaction of the following formula at the anode 22 to generate chlorine.
2Cl− → Cl2 + 2e−
This chlorine further reacts with the electrolytic raw water to generate hypochlorous acid.
Cl2 + H2O → HClO + HCl
On the other hand, in the cathode chamber 30, the following reaction occurs at the cathode.
H2O + 2e- → 1 / 2H2 + OH-

  Electrolyzed water containing weakly alkaline, neutral or weakly acidic hypochlorous acid by mixing the electrolyzed water discharged from the first discharge port 28a and the electrolyzed water discharged from the second discharge port 38a. Is generated.

Experimental example

Table 1 shows the results of experiments conducted with the porous body disposed or not disposed only in the anode chamber.
Using a rectifier capable of adjusting the current and voltage, the concentration of HClO was diluted 10-fold, and potassium iodide starch test paper manufactured by Advantech was used. Moreover, it was set as the constant current and resistance was confirmed by the voltage change.

  As is clear from this result, the voltage value decreased by about 0.1 V when the porous body was disposed in the anode chamber due to the constant currents of 15A, 20A, 25A, and 30A. Similarly, a great change is seen in pH, and the generation of HClO water that does not lower the pH value much is realized, and the pH is close to pH 4.5 to 6.0 where the concentration distribution of HClO is high. In addition, the concentration of HClO varies greatly with each voltage value, and it is remarkable that chlorine gas (Cl2) generated near the anode is dissolved in acidic water and synthesized into HClO. The oxidation-reduction potential (ORP) did not change greatly.

  As a conclusion, conventionally, chlorine gas generated in the anode chamber passes smoothly through the electrolytic chamber free from obstacles from the raw water inlet to the discharge outlet of the anode chamber at a high speed of only about 0.02 seconds, but is hardly dissolved. The chlorine gas generated in the vicinity showed a significant effect that it is essential to have a porous material in good gas-liquid contact with acidic water. In particular, it can be said that it is a remarkable improvement at 20 A (ampere) or more.

Modification 1

FIG. 7 is a schematic diagram showing a configuration of Modification 1 of the electrolyzed water generating apparatus according to the embodiment of the present invention.
Since the same reference numerals as those in FIG. 1 have the same contents, overlapping description will be omitted. However, in the first modification, the anode chamber 20 is set to be not less than three times the volume of the cathode chamber, and the anode chamber 20 has a separate gas chamber. A gas-liquid stirring chamber 700 containing a liquid stirring body is provided so that the electrolyzed water that has passed through the water passage port 203 is discharged through the first discharge port 28a. Since the volume of the anode chamber is increased and the gas-liquid stirring chamber 700 is provided separately, the contact time between the raw electrolyzed water and the electrode is ensured. can do. Although not shown, it goes without saying that the wall 205, the channel groove 200, or the gas-liquid stirring body 207 may be provided in the anode chamber.

Modification 2

FIG. 8 is a schematic diagram showing a configuration of Modification 2 of the electrolyzed water generating apparatus according to the embodiment of the present invention.
Although the same components as those in FIG. 1 are denoted by the same reference numerals and will not be described, in the second modification, the present invention is applied to a diaphragm / two-chamber type electrolyzed water generator.
Even in the case of the diaphragm two-chamber type electrolyzed water generating apparatus, the basic operation is the same, the supply of the electrolyzed raw water from the water amount adjusting valve 26b starts, and the electrolyte aqueous solution is supplied from the electrolyte aqueous solution storage tank 80 to the cathode chamber 30. Then, the electrolysis is started and the aqueous electrolyte solution is refluxed from the discharge port to the electrolytic aqueous solution storage tank 80 provided with the gas vent plug 401. The electrolyzed raw water that has entered the anode chamber 20 from the water amount adjusting valve 26b has improved conductivity due to the anion that has permeated through the anion exchange membrane 15a while containing the chlorine gas generated from the anode 22 and reliably moving along the guide path 206. Then, it is electrolyzed with a low voltage and current, stirred in gas and liquid, and the chlorine gas is dissolved in electrolyzed water to reliably synthesize hypochlorous acid.

Modification 3

FIG. 9 is a schematic view showing an example in which the gas-liquid stirring chamber 700 shown in the first modification is provided in the diaphragm / two-chamber electrolyzed water generating apparatus.
As in the first modification, a gas-liquid stirring chamber 700 containing a gas-liquid stirring body is separately provided in the anode chamber 20 so that the electrolyzed water passing through the water passage port 203 is discharged through the first discharge port 28a. Is. Thereby, since the contact time of electrolysis raw water and an electrode is ensured reliably, electrolysis raw water can be electrolyzed uniformly. Although not shown, it goes without saying that the wall 205, the channel groove 200, or the gas-liquid stirring body 207 may be provided in the anode chamber.

<Summary>
According to the present invention, a chloride solution is used as an electrolyte in the two-chamber and two-chamber electrolyzed water generators that can produce liquid hypochlorous acid with high purity and high concentration, and the anode chamber is pure. Water is supplied and current is applied to produce high-purity and high-concentration hypochlorous acid water at high voltage and high current. In the present invention, undissolved chlorine gas is dissolved in electrolytic acid water to synthesize hypochlorous acid. However, a fine metal mesh and a thick metal net-like laminate capable of strengthening the shape are made into a multilayer, and the fine mesh metal part is ionized. Disposed on the permeable membrane side, the ions and electrodes contained in the ion retention body improve the transfer of electrons, improve the current density, stir chlorine gas and acidic water, promote gas-liquid contact, and undissolved chlorine gas Can be synthesized into hypochlorous acid to prevent chlorine gas emission.

  According to the present invention, at least two or more types of meshes meshed with lines of thickness and two or more types of meshes made of meshes with at least two types of meshes are laminated into at least two layers to form a fine layer. There was no dispatch of an electrolytic method having a structure in which a fine mesh surface is arranged on the side of the ion exchange membrane, and at least an ionic band fluid is arranged between the approximate electrode and the approximate ion exchange membrane.

  In the present invention, a porous body that dissolves undissolved chlorine gas in electrolytic acid water is provided in the anode chamber of the diaphragm two-chamber and two-chamber three-chamber electrolyzed water generators that generate high-purity and high-concentration hypochlorous acid water. The problem was solved by connecting a gas-liquid contact agitation tank that was stored and agitated with chlorine gas and acidic water to promote gas-liquid contact and prevent discharge of undissolved chlorine gas.

  Although acidic water containing undissolved chlorine gas is discharged from the anode chamber, in the present invention, a gas-liquid stirring body is provided inside a part of the pipe connected to the electrolytic water discharge port of the anode chamber, and chlorine gas and Acidic water was stirred and brought into gas-liquid contact.

  In the hypochlorous acid water produced from the apparatus of the present invention, the amount of undissolved chlorine gas is very small, and the chlorine gas is discharged from the produced hypochlorous acid water to an extent that is not perceived by smell. .

  According to the present invention, since the supply flow rate adjustment valve is disposed in each electrolysis chamber raw water supply section, the amount of generated electrolyzed water, pH, and hypochlorous acid concentration can be changed.

DESCRIPTION OF SYMBOLS 10 Electrolyzer 15a Anion exchange membrane 15b Cation exchange membrane 20 Anode chamber 22 Anode 24a, 24b Ion retention body 26 1st water supply port 26b Water quantity adjustment valve 28a 1st discharge port 30 Cathode chamber 32 Cathode 34a, 34b Ion retention Body 36 Second water supply port 38b Water amount adjustment valve 38a Second discharge port 40 Intermediate chamber 45 Fixed frame 50a Electrolyte aqueous solution supply port 50b Electrolyte aqueous solution discharge port 52 Double O-ring 60 Valve 70 DC power supply 80 Electrolyte aqueous solution storage tank 90 Anode Outdoor fixing metal plate 92 Cathode outdoor fixing metal plate 200 Channel groove 205 Wall 207 Gas-liquid stirrer

Claims (9)

An anode and a cathode in which a plurality of nets having different line thicknesses and / or different meshes are laminated;
An anode chamber in which the anode is disposed;
A cathode chamber in which the cathode is disposed;
An anion exchange membrane provided between the anode chamber and the cathode chamber;
A fixing plate for holding and fixing the anion exchange membrane;
An ion retaining body that is provided on both surfaces of the anode and retains chloride ions around the anode;
An aqueous electrolyte storage tank for storing an aqueous electrolyte solution supplied to the cathode chamber;
A gas-liquid stirrer that is disposed in the anode chamber and stirs the acidic water produced in the anode chamber and the chlorine gas generated on the anode surface and floating in the acidic water ,
An apparatus for generating electrolyzed water, characterized in that the ion retaining body is made of a sheet-like gauze, nonwoven fabric or paper having a performance of impregnating and holding a liquid, and the gas-liquid stirring body is made of a sponge-like porous body. . An anode and a cathode in which a plurality of nets having different line thicknesses and / or different meshes are laminated;
An anode chamber in which the anode is disposed;
A cathode chamber in which the cathode is disposed;
An intermediate chamber that is provided between the anode chamber and the cathode chamber and contains an aqueous electrolyte solution for supplying electrolyte ions to the anode chamber and the cathode chamber;
A first partition made of an anion exchange membrane separating the anode chamber and the intermediate chamber;
A second partition wall made of a cation exchange membrane separating the cathode chamber and the intermediate chamber;
An ion retention body that is provided on both surfaces of the anode and the cathode and retains the electrolyte ions around the anode and the cathode;
A gas-liquid stirrer that is disposed in the anode chamber and stirs the acidic water produced in the anode chamber and the chlorine gas generated on the anode surface and floating in the acidic water ,
An apparatus for generating electrolyzed water, characterized in that the ion retaining body is made of a sheet-like gauze, nonwoven fabric or paper having a performance of impregnating and holding a liquid, and the gas-liquid stirring body is made of a sponge-like porous body. .   The anode and / or the cathode has at least two kinds of a mesh having a fine line and a fine mesh with a line thickness of 0.2 mm or less and a fine mesh with a mesh having a coarse mesh. The electrolyzed water generating device according to claim 1 or 2, wherein two or more nets are laminated.   4. The electrolyzed water generating apparatus according to claim 1, wherein the wire is a wire using titanium and stainless steel as a base material.   4. The electrolyzed water generating apparatus according to claim 1, wherein the wire constituting the anode among the wires is made of titanium as a base material and plated with platinum or iridium.   The electrolyzed water generating apparatus according to claim 1, wherein the gas-liquid stirring body is disposed in the entire chamber of the anode chamber. The electrolyzed water generating device according to claim 1 or 2, wherein the anode chamber is provided with a guide channel for guiding the raw electrolyzed water. 8. The electrolyzed water generating apparatus according to claim 7 , wherein the guide path groove is a wall formed alternately with a gap in the width direction of the anode chamber. The apparatus for producing electrolyzed water according to any one of claims 1 to 8 , wherein the electrolyzed water producing apparatus uses a rectifier capable of adjusting current and voltage.

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