JPH08238482A - Electrolytic cell and ion water maker - Google Patents

Abstract

PURPOSE: To realize a small-sized thin electrolytic cell by setting a first case having a cup shape and having a raw water supply passage provided to the side surface thereof and a first emitting passage provided to the bottom surface thereof and a second case having a second emitting passage provided to the bottom surface thereof in opposed relationship to cover a laminate and holding the laminate between the bottom surfaces of the first and second cases. CONSTITUTION: A water permeable second plate-shaped electrode 30 having an outer shape almost same to that of a first plate-shaped electrode 29 and a second C-shaped spacer 25 having an outer shape almost same to that of a first C-shaped spacer 24 are successively laminated so that the outer shapes on the one half sides of them arranged to form a laminate. This laminate is covered by mutually opposing a first case 34 having a cup shape and having a raw water supply passage 33 provided to the side surface thereof and a first emitting passage 31 provided to the bottom surface thereof and a second case 35 having a second emitting passage 32 provided to the bottom surface thereof and held between the bottom surfaces of the first and second cases 34, 35. By this constitution, a small-sized and extremely thin electrolytic cell can be realized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention electrolyzes raw water such as tap water and well water to produce alkaline ionized water for drinking and medical use, and acidic ionized water for use as lotion and sterilizing wash water. And an ionized water generator using the same.

[0002]

2. Description of the Related Art In recent years, ion water generators have become widespread, reflecting the "health boom". This ion water generator electrolyzes tap water or the like in an electrolytic cell to generate alkaline ion water on the cathode side and acidic ion water on the anode side.

Therefore, a conventional continuous electrolysis type ion water generator and an ion water producing method will be described. FIG. 3 is a schematic overall view showing a conventional ion water generator and a conventional ion water generation method. Reference numeral 1 is an ion water generator connected to a raw water pipe 2 for supplying raw water such as tap water. 3 is a water purifier provided with activated carbon or a hollow fiber membrane inside, 4 is a mineral addition cylinder for adding minerals to raw water, 5 is a diaphragm 15 inside and is divided into a cathode chamber 10 and an anode chamber 12 A tank, 6 is a cathode-side treated water discharge passage for discharging treated water in the cathode chamber 10 provided in the electrolytic bath 5, 7 is an anode-side treated water discharge passage for discharging treated water in the anode chamber 12 provided in the electrolytic bath 5, Reference numeral 8a denotes a cathode side water supply passage for supplying raw water to the cathode chamber 10, 8b denotes an anode side water supply passage for supplying raw water to the anode chamber 12, 9 denotes a cathode plate provided in the cathode chamber 10, 1
Reference numeral 1 is an anode plate provided in the anode chamber 12, and 17 is a controller that adjusts the electric power from the power supply unit 16 to a predetermined voltage and applies the electric power to the cathode terminal 13 and the anode terminal 14.

The operation of the conventional ionized water generator 1 configured as described above will be described below. Impurities such as residual chlorine and general bacteria in the raw water are removed from the raw water passed through the raw water pipe 2 by the water purifier 3, and minerals are added to the raw water by the mineral addition cylinder 4 and then passed through the electrolyzer 5. It On the other hand, the electric power supplied from the power supply unit 16 is controlled to a predetermined DC voltage by the controller 17 and supplied to the cathode plate 9 and the anode plate 11. As a result, the raw water in the electrolytic cell is electrolyzed and the hydrogen ion (H ⁺ ) increases near the anode due to the reaction shown in (Chemical formula 1), the pH of the solution decreases, and acidic water is generated, and near the cathode, hydroxide ion (OH ^-) is pH increased solution alkaline ion water is produced increases.

[0005]

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In this way, alkaline ionized water is produced in the cathode chamber 10 and acidic ionized water is produced in the anode chamber 12,
When a voltage is applied so that the cathode plate 9 has a negative voltage while water is flowing, alkaline ionized water is continuously obtained from the cathode side treated water discharge passage 6 and acidic ionized water is continuously obtained from the anode side treated water discharge passage 7.

[0007]

However, the electrolytic cell of the prior art and the ion water generator using the electrolytic cell have a rate of 2 to 1 minute.
Since it is often used by electrolyzing continuously at a flow rate of about 3 liters, a large current of about 2 to 3 A was required as the electrolysis current. Further, as the raw water to be used, tap water or the like having a low electric conductivity (about 100 to 200 μS / cm) is generally used, and in this case, it is actually applied to both electrodes due to the voltage drop due to the resistance of the raw water. The voltage required a voltage as large as many times that required for electrolysis. For this reason, a large-capacity transformer is needed as a power supply transformer for supplying electric power.

Therefore, in order to lower the electrolysis voltage, there is a method of improving the shape of the electrode catalyst, the electrode and the diaphragm, the porosity of the diaphragm, or the like, or reducing the distance between the electrodes to reduce the raw water resistance to reduce the electrolysis voltage. It has been taken. The present invention solves the above-mentioned conventional problems by shortening the distance between the electrodes to lower the electrolytic voltage required for electrolysis, and suppressing the residual chlorine concentration on the cathode chamber side to be low, making it suitable for drinking ionic water. It is an object of the present invention to provide an electrolytic cell and an ionized water generator that can produce water and are small in size and easy to assemble.

[0009]

In order to achieve the above object, in the electrolytic cell of the present invention, the outer shape of the first spacer, which is a short cylindrical frame, is substantially the same on the half side. The first plate-shaped electrode and the water-permeable first plate-shaped electrode having an outer shape whose longitudinal length toward the other half side is shorter than that of the first spacer and whose outer edge is formed around the first spacer The first C-shaped spacer and the first C-shaped spacer have a substantially C-shaped frame having substantially the same outer shape and a longitudinal length extending to the other half side is shorter than that of the first spacer. They are substantially the same, and the length in the longitudinal direction toward the other half side is the first
A diaphragm having substantially the same outer shape as the plate electrode, a second C-shaped spacer having substantially the same outer shape as the first C-shaped spacer, and substantially the same outer shape as the first plate electrode. A water-permeable second plate-shaped electrode and a second spacer having a substantially same outer shape as the first spacer are sequentially laminated with the outer shapes on one half side aligned to form a laminated body, which has a cup shape. The first case having the raw water supply passage on the side surface and the first discharge passage on the bottom surface and the second case having at least the bottom surface and the second discharge passage on the bottom surface are opposed to each other to cover the laminated body, It is characterized in that the laminated body is sandwiched between the respective bottom surfaces of the first case and the second case.

Further, it is desirable that the diaphragm is a cation exchange membrane. Further, it is preferable that both the first plate-shaped electrode and the second plate-shaped electrode are made of a porous material.

The ion water generator of the present invention comprises a water purifier and the electrolytic cell according to any one of claims 1 to 3.

[0012]

The electrolytic cell of the present invention has a first cylindrical frame.
The outer shape of the spacer and the first spacer are substantially the same on one half side, and the length in the longitudinal direction to the other half side is shorter than that of the first spacer, and an outer edge is formed on the periphery of the spacer. Of the flexible first plate-shaped electrode and the first plate-shaped electrode are C-shaped frames whose half-sides have substantially the same outer shape, and have legs whose longitudinal length extending to the other half-side is shorter than that of the first spacer. The extended first C-shaped spacers and the first C-shaped spacers have substantially the same outer shape on one half side, and the length in the longitudinal direction to the other half side is substantially the same as the first plate electrode. A diaphragm having the same, a second C-shaped spacer having substantially the same outer shape as the first C-shaped spacer, and a water-permeable second plate-shaped electrode having substantially the same outer shape as the first plate-shaped electrode, And the second spacers having substantially the same outer shape as the first spacers have the outer shapes on the half side aligned. A first case having a cup shape and having a raw water supply passage on the side surface and a first discharge passage on the bottom surface, and a second discharge passage on the bottom surface having at least the bottom surface. Since the second case is opposed to each other to cover the laminated body, and the laminated body is sandwiched between the bottom surfaces of the first case and the second case, a small and extremely thin electrolytic cell can be realized. Its dimensional control is simple and it is very easy to assemble, and the gas generated on the cathode chamber side and the gas generated on the anode chamber side are quickly discharged together with the ionized water from the respective discharge passages, and then on the surface of the electrode and the diaphragm. It is possible to prevent stagnation and adhesion.

Further, since the diaphragm is made of a cation exchange membrane, it is possible to prevent chlorine gas generated in the anode chamber from flowing into the cathode chamber.

Further, since both the first plate-shaped electrode and the second plate-shaped electrode are made of a porous material, the gas generated between the respective electrodes and the diaphragm is promptly passed through the holes of the respective electrodes. It can be transferred to the discharge path.

Since the ion water generator of the present invention is provided with the above-mentioned electrolytic cell in addition to the water purifier, it is possible to provide a small ion water generator.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electrolytic cell according to an embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a partially enlarged perspective view of an electrolytic cell in one embodiment of the present invention. FIG. 2 is a perspective sectional view of an electrolytic cell according to an embodiment of the present invention. 1 and 2,
20 is a first spacer, 21 is a second spacer, 22 is a first spacer
An outer edge formed around the plate electrode 29, 23 an outer edge formed around the second plate electrode 30, 24 a first C-shaped spacer, 25 a second C-shaped spacer, 26 a diaphragm, 27, 2
8 is an input terminal, 31 is a first discharge passage, 32 is a second discharge passage,
33 is a raw water supply channel, 34 is a first case, 35 is a cup-shaped second case, and 36 is a stopper. The first spacer 20 and the second spacer 21 are made of short cylindrical frames,
The material is preferably a resin having insulation and water resistance. In this embodiment, it is a rectangular frame. The outer edge 22 and the second plate electrode 30 formed around the first plate electrode 29.
It is appropriate that the outer edge 23 formed on the periphery of the plate has a thickness similar to the thickness of each plate electrode of about 1.5 mm, and protects the plate electrode and at the same time protects the water from the side surface of the plate electrode. It prevents spillage and allows for easy fixation. The material is preferably a resin having insulation and water resistance. The first plate-shaped electrode 29 and the second plate-shaped electrode 30 have substantially the same external shape on one half side as the first spacer 20 and the second spacer 21 which are adjacent to each other, and have a longitudinal length extending to the other half side. The outer shape is shorter than that of the first spacer 20 and the second spacer 21. In this embodiment, the longitudinal length is a rectangle shorter than the first spacer 20 and the second spacer 21. Therefore, the second spacer 21
Since the outer side thereof is in close contact with the inner wall of the cup-shaped second case 35, a flow path of electrolyzed water is formed and the electrolyzed water is transferred in the direction indicated by arrow e. Similarly, since the first spacer 20 also closely contacts the inner wall of the first case 34, a flow path of electrolyzed water is formed and the electrolyzed water is transferred in the direction indicated by the arrow b. Each of the plate-shaped electrodes penetrates the outer edge of the periphery to input terminals 27.
And 28 are provided, and power controlled to a predetermined voltage by a control unit (not shown) is supplied. When a positive voltage is applied to the input terminal 27 and a negative voltage is applied to the input terminal 28, the first plate electrode 2
9 serves as a positive electrode, and the second plate-shaped electrode 30 serves as a negative electrode.

The first C-shaped spacer 24 and the second C-shaped spacer 25 have substantially the same outer shape on one half side as the first plate electrode 29 and the second plate electrode 30, respectively, and extend to the other half side. Is composed of a C-shaped frame with legs extending in the longitudinal direction shorter than the first spacer 20 and the second spacer 21, and in this embodiment, the lower end of the rectangle is provided in an open U-shape. There is. This first C-shaped spacer 24
The second C-shaped spacer 25 prevents the first plate electrode 29, the second plate electrode 30 and the diaphragm 26 from being in direct contact with each other and electrically damaging the diaphragm 26. A flow path for electrolyzed water is formed between the diaphragms 26. First C-shaped spacer 24 and second C-shaped spacer 2
The thickness of 5 is preferably about 0.1 mm, and the material thereof is preferably a resin having insulation and high strength. The diaphragm 26 is the first C
The V-shaped spacer 24 and the second C-shaped spacer 25 have substantially the same outer shape on one half side, and the longitudinal lengths extending to the other half side are substantially the same as the first plate electrode 29 and the second plate electrode 30. It is composed of cation exchange membranes having the same outer shape, and the thickness thereof is preferably about 0.5 mm. The longitudinal length of the diaphragm 26 may be longer than that of the first plate electrode 29 and the second plate electrode 30. In this embodiment, the diaphragm 26, the first plate-shaped electrode 29, and the second plate-shaped electrode 30 are rectangular with substantially the same shape. This cation exchange membrane selectively permeates only cations generated by electrolysis, and here prevents chlorine ions generated in the anode chamber from permeating into the cathode chamber,
It is to prevent the mixture as free chlorine in alkaline ionized water. In this way, the first spacer 20 and the first spacer 20
The plate-shaped electrode 29, the first C-shaped spacer 24, the diaphragm 26, the second C-shaped spacer 25, the second plate-shaped electrode 30 and the second spacer 21 are laminated such that their outer shapes on one half side are aligned and closely contacted in order. To form a laminate.

Next, the raw water supply passage 3 has a cup shape and is provided on the side surface.
3 and the first case 34 having the first discharge passage 31 on the bottom surface
And the second case 35 provided with the second discharge passage 32 are opposed to each other to cover the above-mentioned laminated body, and the first case 34 and the second case
The side surfaces of the first spacer 20 and the second spacer 21 of the laminated body are sandwiched between the bottom surfaces of the cases 35 and fixed by the stoppers 36. In this way, electrolytic chambers are formed on the first plate electrode 29 side and the second plate electrode 30 side, respectively. At this time, the thickness of the first spacer 20 and the second spacer 21 may be about several tens of millimeters, and the first C-shaped spacer 2
4 and the thickness of the second C-shaped spacer 25, the flow resistance of the electrolyzed water transferred in the frame of the first and second C-shaped spacers 24, 25 is increased by the first and second spacers 20,
It can be made larger than the flow path resistance of the electrolyzed water transferred in the frame 21. Then, the first discharge passage 31 and the second discharge passage 32
When controlling the ion concentration of the ionized water discharged from, the flow path resistance can be arbitrarily changed by changing the thickness of the first spacer 20 and the second spacer 21. When a positive voltage is applied to the input terminal 27 and a negative voltage is applied to the input terminal 28, the first plate electrode 29 side can be an anode chamber and the second plate electrode 30 side can be a cathode chamber. The first spacer 20 and the first C-shaped spacer 24, and the second spacer 21 and the second C-shaped spacer 25 are adjusted in thickness to change the ratio of the amount of alkaline ionized water to the amount of acidic ionized water. You can

In this way, the distance between the two plate-shaped electrodes can be greatly shortened to minimize the rise of the electrolysis voltage, and the volume of the electrolytic cell can be reduced to prevent the membrane from being damaged or destroyed. The life of the diaphragm can be extended. Moreover, it is very difficult to control the dimension of the inter-electrode distance, but according to the present embodiment, the dimension can be controlled very easily while securing the flow path.

Here, the first plate electrode 29 and the second plate electrode 30 will be described. The two plate-shaped electrodes are water-permeable, and are suitably provided with a plurality of holes in a direction substantially perpendicular to the inflow direction of raw water supplied from the lower part of the electrolytic cell. A mesh, a porous material or a resin formed into a honeycomb shape is suitable. As a result, a flow path of ion water can be formed inside the electrode.
The ionic water generated between the C-shaped spacer 24 and the first plate-shaped electrode 29 and between the second C-shaped spacer 25 and the second plate-shaped electrode 30 is transferred through the flow path inside the plate-shaped electrode and from each discharge path. Is ejected. The flow velocity of the ionized water transferred inside the plate-like electrode is high, and the ionized water is generated on the surface of the diaphragm 26 or in the vicinity of the electrode, and then is condensed and attached to the gas bubbles such as hydrogen and oxygen to be removed and discharged. be able to. In this way, the effective electrode area is prevented from decreasing due to the gas adhering to the surfaces of the first and second plate-shaped electrodes 29 and 30, and the gas stays inside the electrolytic cell to increase the electric resistance and interrupt the current path. Therefore, it is possible to prevent the rise of the electrolysis voltage, and at the same time, to maintain the initial electrolysis performance for a long period of time. Since the contact area between the first and second plate electrodes 29, 30 and the raw water can be increased, the raw water can be electrolyzed more effectively to generate ionic water. In this embodiment, the first and second plate-shaped electrodes 29 and 30 are made of titanium expanded metal (plate thickness 0.5 mm, line width 0.5 mm, unit, unit of which is obtained by coating a titanium substrate with platinum to a thickness of 2 μm by electroplating. Opening area 1.95m
m ² ) is used. The reason for plating platinum here is to improve the conductivity of the plate-like electrode and suppress the elution of metal to improve the corrosion resistance of the electrode. Therefore, it is also appropriate to use a noble metal such as platinum group in place of platinum. Since the Tafel coefficient of the electrode varies depending on the plate thickness, line width, and unit opening area of the expanded metal, the electrolytic characteristics of the electrode change. Therefore, it is desirable to use an appropriate expanded metal depending on the volume of the electrolytic cell, the flow rate of the raw water, the pH concentration of the generated ion water, and the like. On the other hand, the flatness of the expanded metal causes the distance between the plate-like electrodes to fluctuate and the diaphragm to be damaged.
It is set to 5 mm. The expanded metal is cut with a laser cutter, and a titanium rod (30 mm × 0.5 mmφ) forming the input terminals 27 and 28 is attached to one end of the expanded metal by welding it later, as described later.
It is 9 and 30. As shown in FIG. 2, in the electrolytic cell of the present embodiment, the first case 34 and the second case 35 are opposed to each other to cover the above-mentioned laminated body, and the first case 34 and the second case
Each of the cases 35 is clamped by a stopper 36. It is suitable that both the first and second cases 34 and 35 are formed of a resin having a waterproof property, and at the same time, a material having an electrical insulating property is desirable. This prevents leakage of the electrolytic voltage applied to the first and second plate electrodes. By the way, through holes are provided in the first case 34 at the respective positions of the input terminals 27 and 28. The laminated body is provided with a first case 34 and a second case 35.
After being sandwiched and fixed by, the input terminals 27 and 28 are formed by welding a titanium rod from the outside. However, the input terminals 27 and 28 are previously connected to the first and second plate-like electrodes 29, 30.
It is also possible to attach it to. At this time, it is necessary to provide the first case 34 with a groove and a margin so that the input terminals 27 and 28 can be inserted into the through holes of the first case 34. In addition, an electrolytic cell having waterproofness is formed at the fitting portion of the first case 34 and the second case 35 with a stopper 36 via packing or the like. The electrolytic cell of this embodiment includes a first spacer 20, a first plate-shaped electrode 29, and a first C
V-shaped spacer 24, diaphragm 26, second C-shaped spacer 2
5, the second plate electrode 30, and the second spacer 21 are laminated in this order, and the first case 34 and the second case 35 are simply sandwiched and fixed from both sides, so that the assembly is extremely easy. . The width of the electrolytic cell can be set to several tens of millimeters and the length in the longitudinal direction can be set to about 100 mm, so that a small and thin electrolytic cell can be realized.

Regarding the electrolytic cell constructed as described above,
The operation will be described below with reference to FIGS. 1 and 2. Raw water supplied from the raw water supply path 33 is transferred as shown by an arrow a, and a flow path is formed in each of the frames of the first spacer 20 and the second spacer 21 shown by arrows b and e, and an arrow. The flow is divided into the flow paths formed in the frames of the first C-shaped spacer 24 and the second C-shaped spacer 25 shown by c and d, respectively. At this time, a positive voltage is applied to the first plate electrode 29 to form a positive electrode, and a negative voltage is applied to the second plate electrode 30 to form a negative electrode. The raw water transferred through the flow path of arrow b is electrolyzed at the positive electrode to become acidic ionized water, and the raw water transferred through the flow path of arrow c is similarly electrolyzed to acidic ionized water. 1 plate electrode 2
The gas passes through a plurality of holes provided in 9 (arrow g is an example of the flow path), and is discharged from the flow path of the arrow k through the second discharge path 32. The raw water transferred through the flow path indicated by arrow e is electrolyzed by the negative electrode to become alkaline ionized water, and from the flow path indicated by arrow h to the arrow d.
Similarly, the raw water transferred through the channel is electrolyzed into alkaline ionized water, passes through each of the plurality of holes provided in the second plate electrode 30 (arrow i is an example of the channel), and the first discharge channel is formed. It discharges from the flow path of the arrow l via 31. On the other hand, since anions such as chlorine ions generated in the anode chamber do not pass through the diaphragm 26 formed of the cation exchange membrane, in the cathode chamber even if the distance between the two plate electrodes is 1 mm or less. The residual chlorine concentration of the generated alkaline ionized water can be suppressed.

Here, gas bubbles generated during the electrolysis and aggregating and adhering to the periphery and the surface of the first and second plate electrodes 29, 30 and the diaphragm 26 are removed by flowing water and dissolved in ionic water. It is discharged outside the electrolytic cell system. Since the flow velocity of the ion water transferred through the flow paths indicated by arrows c and d is sufficiently high, the ion water is aggregated and adhered inside the plurality of holes provided in the first and second plate electrodes 29 and 30 and on the surface of the diaphragm 26. The gas can be effectively removed, dissolved in ionized water, and discharged outside the electrolytic cell system.

Next, the characteristics of the electrolytic cell of this embodiment will be described. 2.5 L / min of tap water was supplied as raw water to the electrolytic chamber at a ratio of 4: 1 to the cathode chamber and the anode chamber at a temperature of 25
When electrolyzed at a temperature of 5 ° C. and a current density of 5 A / dm ² , alkaline ionized water having a pH of 10.9 in the cathode chamber and acidic ionized water having a pH of 2.9 in the cathode chamber when the pH of the raw water was 7.5. Was obtained. The electrolysis voltage at this time was about 4.4 V, and the energy efficiency calculated from the following formula was about 4.6%.

Energy efficiency = Vt / V × current efficiency Current efficiency = Wt × Q ₀ / Q × 100 Vt: theoretical decomposition voltage of the electrochemical reaction V: electrolysis voltage applied to the electrochemical reaction operation Wt: production amount Q ₀ : theoretical energization amount Q: actual energization amount The residual chlorine concentration of alkaline ionized water is 0.1 mg /
It was below L. Chlorine concentration in tap water is 0.4 mg / L
Therefore, the concentration is negligible.

When the same tap water was electrolyzed using the electrolytic cell shown in the conventional example (distance between electrodes is about 5 mm) under the same conditions as in the above example, the required electrolysis voltage was about 13 V and the energy efficiency was about 1. At 0.5%, the residual chlorine concentration of the produced alkaline ionized water was 0.1 mg / L or less. As described above, according to the electrolytic cell of the present embodiment, the energy efficiency is greatly improved to about 3 times that of the conventional example, the required electrolysis voltage may be about 1/3, and the generated alkaline ionized water remains. The chlorine concentration is about the same as in the conventional example in which the distance between the electrodes is large. The ion water generator of this embodiment, which is miniaturized by using the electrolytic cell having a short distance between the electrodes, has a large energy efficiency and is improved by reducing the required electrolysis voltage, and the residual chlorine concentration of alkaline ionized water is also improved. It is possible to supply safe quoted water without increasing the price.

Next, in place of the first and second plate-like electrodes 29 and 30 having a plurality of holes of the present embodiment, a dense platinum-coated titanium electrode having no holes was used, and the tap water was supplied under the same conditions as in the above embodiment. When the water was electrolyzed, alkaline ionized water having a pH of 10.3 was obtained in the cathode chamber and acidic ionized water having a pH of 3.4 was obtained in the anode chamber, but the required electrolysis voltage was 4.
It was as high as 12.5V as compared with 4V, and therefore the energy efficiency was low at about 1.3%. From this, it is appropriate that the electrode is a porous plate-like electrode that can increase the effective electrode area.

Further, the cation exchange membrane used in the diaphragm 26 of the present example was replaced with an ion permeable membrane (trade name: Yumiflon # MF250), and tap water was electrolyzed under the same conditions as in the above example. Although alkaline ionized water having a pH of 9.9 was obtained in the cathode chamber and acidic ionized water having a pH of 3.4 was obtained in the anode chamber, the required electrolysis voltage was about 4.6 V and the energy efficiency was about 3.6%. Although it is equivalent, the residual chlorine concentration of alkaline ionized water is 5.2 mg / L, which is about 50.
The concentration has doubled. Therefore, the diaphragm 26 used in this embodiment is preferably a cation exchange membrane.

Next, an ionized water generator which is another embodiment of the present invention will be described. The conventional ionized water generator of FIG. 3 and the electrolytic cell 5 are the same except for the surroundings.
The description is omitted here. The raw water sent from the raw water pipe 2 is sent to the electrolytic cell 5 through the water purifier 3 and the mineral addition cylinder 4. The electrolytic bath 5 is as shown in FIGS. 1 and 2, and the generated ion water is discharged from the cathode side treated water discharge passage 6 and the cathode side treated water discharge passage 7. The description of this electrolytic cell will be omitted from the description of the above embodiment. As described above, the ion water generator of the present embodiment can reduce the electrolysis voltage required for electrolysis and suppress the residual chlorine concentration on the cathode chamber side to generate ion water suitable for drinking, which is small and lightweight. It is possible to obtain an ion water generator.

[0030]

As is apparent from the above embodiments, according to the present invention, the first spacer having a short cylindrical frame and the first spacer are provided.
A water-permeable first plate that has an outer shape on one half side that is substantially the same as that of the spacer, and has a length on the other half side that is shorter than the first spacer in the longitudinal direction, and has an outer edge formed around the outer shape. -Shaped electrode and first plate-shaped electrode are C-shaped frames whose outer shapes on one half side are substantially the same, and a first C-shape in which a leg whose longitudinal length to the other half side is shorter than the first spacer extends -Shaped spacers and the first C-shaped spacers have substantially the same outer shape on one half side and have a first longitudinal length extending to the other half side.
A diaphragm having substantially the same outer shape as the plate electrode, a second C-shaped spacer having substantially the same outer shape as the first C-shaped spacer, and substantially the same outer shape as the first plate electrode. A water-permeable second plate-shaped electrode and a second spacer having a substantially same outer shape as the first spacer are sequentially laminated with the outer shapes on one half side aligned to form a laminated body, which has a cup shape. The first case having the raw water supply passage on the side surface and the first discharge passage on the bottom surface and the second case having at least the bottom surface and the second discharge passage on the bottom surface are opposed to each other to cover the laminated body, Since the laminated body is sandwiched between the bottom surfaces of the first case and the second case, the distance between the electrodes can be shortened, the electrolytic cell can be downsized, the energy efficiency can be increased, and the electrolysis voltage can be suppressed low. Further, since they are only sandwiched, they can be easily assembled, and by stacking them, a flow path can be formed and dimensional control can be surely performed.

Further, since the diaphragm is made of a cation exchange membrane, it is possible to suppress an increase in the residual chlorine concentration of ionized water generated in the cathode chamber.

Further, since both the first plate-shaped electrode and the second plate-shaped electrode are made of a porous material, it is possible to increase the effective electrode area and improve the energy efficiency.

Further, since the electrolytic cell is provided in addition to the water purifier, it is possible to obtain an ion water generator which is small in size, easy to assemble, has a long service life, and produces safe ion water for drinking.

[Brief description of drawings]

FIG. 1 is a partially enlarged perspective view of an electrolytic cell according to an embodiment of the present invention.

FIG. 2 is a perspective sectional view of an electrolytic cell according to an embodiment of the present invention.

FIG. 3 is a schematic overall view showing a conventional ion water generator and a conventional ion water generation method.

[Explanation of symbols]

 1 Ionized water generator 2 Raw water pipe 3 Water purifier 4 Mineral addition cylinder 5 Electrolyzer 6 Cathode side treated water discharge passage 7 Anode side treated water discharge passage 8a Cathode side water supply passage 8b Anode side water supply passage 9 Cathode plate 10 Cathode chamber 11 Anode Plate 12 anode chamber 13 cathode terminal 14 anode terminal 15 diaphragm 20 first spacer 21 second spacer 22, 23 outer edge 24 first C-shaped spacer 25 second C-shaped spacer 26 diaphragm 27, 28 input terminal 29 first plate-shaped electrode 30 2nd plate-shaped electrode 31 1st discharge path 32 2nd discharge path 33 Raw water supply path 34 1st case 35 2nd case 36 Stopper

Claims (4)

[Claims] 1. A first spacer comprising a short tubular frame and the first spacer have substantially the same outer shape on one half side, and have a longitudinal length extending to the other half side from the first spacer. A water-permeable first plate-like electrode having a short outer shape and an outer edge formed around the water-permeable first plate-like electrode is a C-shaped frame whose outer shape on one half side is substantially the same. The first C having a length in the longitudinal direction extending to one half side of the first C is shorter than that of the first spacer.
The V-shaped spacer and the first C-shaped spacer have substantially the same outer shape on one half side, and the longitudinal length extending to the other half side is substantially the same as the first plate electrode. A diaphragm, a second C-shaped spacer having substantially the same outer shape as the first C-shaped spacer, and a water-permeable second plate-shaped electrode having substantially the same outer shape as the first plate-shaped electrode, And second spacers having substantially the same outer shape as the first spacers are sequentially laminated with the outer shapes on the one half side aligned to form a laminated body, which has a cup shape and has a raw water supply path on the side surface and a bottom surface. A first case provided with a first discharge passage and a second case having at least a bottom surface and provided with a second discharge passage on the bottom surface are opposed to each other to cover the laminated body, and the first case is provided. Clamping the laminate on the bottom surface of each of the second cases Electrolyzer, characterized in that the. 2. The electrolytic cell according to claim 1, wherein the diaphragm is a cation exchange membrane. 3. The electrolytic cell according to claim 1, wherein both the first plate-shaped electrode and the second plate-shaped electrode are made of a porous material. 4. An ion water generator comprising a water purifier and the electrolytic cell according to claim 1.