JP2016083650A - Electrolytic water generator and electrolytic water generating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily obtain functional waters such as sterilization water, deodorant water, cleaning water and reduced hydrogen water by adding an electrolyte to water, specifically, to provide a universal electrolytic water generator for home use capable of inexpensively and easily generating these functional waters in a small container such as a PET bottle with the view to solving the problem that obtaining of these functional waters by the electrolysis of water is well-known but the products are expensive and not widely popular, and thus, to improve hygienic environment including developing countries, and to prevent deterioration in global environment.SOLUTION: Electrolytic functional water in an amount sufficient for consumption at home is generated with a batch method in a container such as an atomizer-fitted PET bottle or the like. In generating sterilization water and deodorant water, suitable PH adjustment is performed before and after electrolysis, and in generating cleaning water and hydrogen water, instead of using an electrolytic membrane such as conventional ion exchange membrane or the like, using a paper filter or a cloth filter results in achieving both low cost and improved quality of the generated water. Further, by utilizing heat generated upon electrolysis, the generation of highly-effective warm cleaning water is made possible as well.SELECTED DRAWING: Figure 1

Description

  The technology according to the present invention belongs to the field of producing small-volume electrolyzed water for household use.

The technique of electrolysis of water performed by separating an anode and a cathode with a membrane such as an ion exchange membrane is well known as a diaphragm type. In this conventional method, acidic water is obtained on the anode side and alkaline water is obtained on the cathode side, which are called electrolytic functional water and are used in various ways.
There is also known a method for obtaining sterilized water by adding a small amount of sodium chloride to raw water for electrolysis without using a diaphragm. In any case, the sterilizing main component of the electrolyzed water obtained by adding salt is hypochlorous acid, and the instantaneous sterilizing power is 80 times that of a typical sodium hypochlorite sterilizing solution. It is said to be sterilizing and deodorizing water that is strong and gentle to the living body. Further, alkaline electrolyzed water obtained by adding sodium bicarbonate (NaHCO ₃ ) to raw water for electrolysis is known to be effective for cleaning dirt such as fats and oils such as tableware in the kitchen and starch. It is also used.
Moreover, although the active oxygen removal capability of hydrogen water is known and attracts attention as health water, electrolysis hydrogen water is sold because it is also obtained as electrolysis water. These are collectively referred to as electrolytically functional water.

  JP-A-4-94785   Japanese Patent Laid-Open No. 7-265861   JP-A-8-323307   JP-A-9-95479   JP 2000-79393 A   JP 2000-1197889 A   JP 2004-209351 A   JP 2007-44573 A   JP 2003-211104 A

Electrolyzed functional water is attracting attention as environmentally friendly sterilization, deodorization, cleaning, and health water. However, an electrolytic membrane such as an ion exchange membrane used in the diaphragm type is expensive and difficult to handle, and there are two compartments partitioned by the membrane, and the treatment mechanism of the electrolyzed water generated there is complicated. Moreover, the non-diaphragm type has a problem that the performance of the electrolyzed water produced is considerably inferior to that of the diaphragm type.
In addition, many conventional electrolyzed water generators are electrolyzed with flowing water directly connected to a water pipe, and the amount of electrolyzed water produced is too high for use at home, and the price is very high.

In addition, as in "Patent Documents 5 to 7," a so-called flowing water type electrolysis system in which spraying is performed while electrolyzing the inside of a sprayer of a type called a trigger sprayer or an introduction port of the liquid, Conventionally, there are small portable devices such as “Document 8”. However, these products are limited to sterilized water or basically the same principle as the flowing water type, so the electrolysis time is short. There is a problem that not only an electrolyte with sufficient performance is obtained but also the price is high.
It is an object of the present invention to provide a small and inexpensive apparatus that can easily generate high-performance electrolytic functional water at home.

Furthermore, when electrolysis is performed by adding sodium chloride as an electrolyte in order to obtain sterilized water, the pH of the alkalinity of the solution increases with the continuation of electrolysis in the conventional method, which is higher than that of strong hypochlorous acid (HClO). More chloric acid (ClO) having a weak sterilizing power is produced.
If a strong acid is added to make the electrolyzed product solution acidic, there is a problem that there is a risk of generating chlorine gas. Another object of the present invention is to provide a method of obtaining a slightly acidic and powerful sterilizing / deodorizing water by safe pH adjustment.

Conventional environmentally friendly kitchen cleaners include baking soda, sodium sesquiate, and sodium carbonate. The hydrogen ion exponent PH of these aqueous solutions is PH 8.4, PH 9.8, PH 11.2, and the like. These alkaline solutions instantly saponify and decompose oils and fats, and as such have a surface-active effect, they are extremely effective as washing water for kitchens such as dishes and microwave ovens. It is known that the range of oils and fats that can be produced is widened. An object of the present invention is to easily obtain an alkaline ion cleaning solution having a pH of 12 or more, which greatly exceeds the aqueous sodium carbonate solution, even if sodium bicarbonate that is commonly used at home is used as an electrolyte.
Moreover, these alkaline cleaning solutions are more effective as the temperature is higher. (Patent Document 3)
Therefore, it is also an object to increase the temperature of the generated electrolyte without using a special heater.
In addition to these, another object of the present invention is to obtain hydrogen water for reduction in which active hydrogen generated during electrolysis is effectively dissolved in water.

In the present invention, water such as tap water is used as raw water for electrolysis. And the method of selecting the electrolyte added according to the kind of production | generation electrolysis water required was employ | adopted.
In addition, instead of using a flowing water type generator such as a water pipe direct connection type, the amount of production is limited to an amount sufficient for daily use at home. The batch method assuming a maximum time of up to about 24 hours was adopted, and various methods relating to electrolysis and the method capable of most rationally improving the performance and efficiency of the generated electrolyzed water were found as follows.

As a method for obtaining hypochlorous acid water for sterilization and deodorization by adding a small amount of sodium chloride to tap water, it is known that the electrolysis method of the diaphragm does sufficiently achieve the purpose. However, in the system in which baking soda is added to obtain washing water, alkaline ion washing water having a pH of 12 or more cannot be obtained by the non-diaphragm type. In the present invention, unlike the conventional diaphragm type, a new technical means has been found that makes it possible to realize the problem even if the expensive ion exchange membrane and the structures accompanying it are eliminated.
The present inventor first manufactured an experimental device that can roughly separate the yin and yang poles with a filter, while changing the type and shape of the filter in various ways, and the time history data such as the reduction potential and pH of the electrolyzed water on both electrodes. I studied it in detail.
As a result, it was found that it was effective to use a simple filter that would prevent the recirculation of bubbles and water flow away from the scientific concept of porous or membrane. In other words, the electrolytic cleaning water produced by surrounding the portion of the positive electrode inserted into the raw water for electrolysis with a filter made of cloth or paper containing chemical fibers, in the form of a bag or pipe, It succeeded in obtaining a value of PH12 or more which is almost the same as that of an expensive diaphragm type electrolyzer. In light of the principle of preventing recombination of active oxygen that circulates near the cathode with hydrogen, this can also be applied to an electrolysis system for the purpose of obtaining hydrogen water having a high concentration.

As the positive electrode, generally, a titanium base material coated with an artificial diamond having conductivity such as noble metal platinum or DLC is used. However, the positive electrode is inevitably expensive. Therefore, a wasteful support portion that does not enter the electrolyzed water and does not function as an electrode is made of an inexpensive base metal such as brass.
However, inexpensive base metals are easily corroded by the active oxygen generated at the positive electrode when the same potential as the positive electrode is reached in the electrolyte. The strength of this corrosion is strong, and even if an inexpensive base metal portion is coated with a paint or the like, it is inevitable that the corrosion proceeds from the boundary surface.
In the present invention, the base metal is joined to the positive electrode of the noble metal by pressure welding or welding to extend the entire electrode, and the portion inserted into the electrolyzed water of the base metal portion is covered with a heat shrink tube to prevent corrosion. A method was also devised.

As the electrolysis continues, the electrolyte heats up due to its own resistance loss and rises in temperature. In particular, in the case of cleaning water generation, ionization of electrolytic water is promoted. For both of these reasons, the equivalent resistance of the electrolyte is reduced by half. For this reason, if the DC power supply remains under constant voltage control, the electrolysis current increases greatly, which may exceed the rated current of the power supply. Therefore, it is preferable that the power source to be used is a DC power source and constant current control is performed.
On the other hand, as a method for further increasing the cleaning efficiency of the cleaning electrolyzed water, it is possible to obtain high-temperature cleaning water by accumulating heat generated by the electrolytic solution by using a heat retaining bottle in a small container of the electrolytic solution.

An electrolysis solution obtained by electrolysis to which a chlorine compound such as salt is added has a high alkalinity, and a large amount of chloric acid (ClO) having a weak sterilizing power is generated. A method is known in which when an acid is added to this to adjust the pH, it can be converted into a large amount of hypochlorous acid (HClO) having a strong sterilizing power. If a strong acid is used for this pH adjuster, there is a risk of chlorine gas generation. In the present invention, as a PH tonic agent for post-electrolysis addition, it has been found that it is easy to obtain at home and is safe.
Furthermore, the present inventors have succeeded in finding a regulator capable of adjusting the pH of produced water after electrolysis by addition before electrolysis. It should be noted that the ethyl alcohol component is extremely effective as a pH adjusting agent to be added before electrolysis, although it is not acidic per se. This alcohol appears to be acidic due to the anodic reaction of electrolysis.
The PH adjuster thus discovered provides a safe and powerful sterilizing slightly acidic electrolyte solution having a pH of 5 or more and PH 7 or less.
And it discovered that the half life of the produced | generated hypochlorous acid (HClO) could be changed with the kind of these PH tonicity agents.
Hypochlorous acid (HClO) is contained when reducing water is generated by adding various electrolytes such as baking soda and citric acid to tap water that may contain a small amount of sodium chloride. In many cases, it is inconvenient for the living body. At this time, it was also found that the production of hypochlorous acid (HClO) can be inhibited by adding sugars such as granulated sugar and carbohydrates.

The method according to the present invention makes it possible to produce an inexpensive electrolyzed water generator that obtains high-performance electrolyzed functional water in an amount sufficient for home use.
Although sterilized water of slightly acidic hypochlorous acid obtained by adjusting pH before and after electrolysis with an electrolyte solution added with salt etc. is powerful enough to instantly sterilize bacteria including influenza viruses and O157 bacteria, It is environmentally friendly because it is halved rapidly by light and organic matter. In addition to food sterilization and hand washing, garlicing with this sterilized water has a wide range of uses for prevention of pneumonia caused by aspiration of the elderly, which is becoming increasingly apparent, and for deodorizing kitchens and pets. If it is used in an alkaline state with a lot of chloric acid without adjusting the pH, it is useful for bleaching kitchen cloths and the like.
Alkaline ion wash water obtained by adding sodium bicarbonate or the like decomposes oil and does not contain a surfactant, so it is not only environmentally friendly, but also has the effect of greatly reducing the amount of water used for rinsing dishes and the like. This effect can be further doubled in the method of generating the washing water in the heat retaining bottle.
Many reducing hydrogen waters that remove active oxygen harmful to the living body are commercially available, but these are originally difficult to preserve. According to the present invention, it is possible to easily generate electrolytic hydrogen water having a reduction potential higher than that of a commercially available product and containing a large amount of hydrogen.

  Configuration conceptual diagram of the present invention   Current value identification circuit diagram   Wash water generation characteristics graph

The configuration concept of the present invention will be described with reference to FIG. Reference numeral 1 denotes a container such as a plastic bottle, and water such as tap water is poured up to a liquid level of 12.
No. 2 is a sprayer for spraying and using the generated electrolyte, which is called a trigger sprayer, and can be fixed also as a lid of a PET bottle. The structure for spraying the trigger sprayer is the same as that commercially available in large quantities and will not be described in detail here. In the present invention, base metal electrode extension pipes 5 and 6 are fixed to the trigger sprayer, and the positive electrode 3 and the negative electrode 4 are held in the electrolytic water. A current value detection circuit 10 and an LED display 11 are built in the trigger sprayer, and direct current power is supplied from an external AC adapter 8 through a connector 9. The AC adapter 8 can be a controller in which a constant current circuit and a timer are integrated.
Reference numeral 13 denotes a spray suction pipe for sucking up the electrolyte to be sprayed from the bottom.
Now, a case where tap water is used as raw water for electrolysis and a small amount of chlorine compound such as sodium chloride is added as an electrolyte will be described. A direct current of about 5 to 24 V DC is supplied from the AC adapter 8 to the electrodes 3 and 4 via the current value detection circuit 10. An electrolytic solution exists between the electrodes 3 and 4 and an electrolytic current flows. At the positive electrode, H ₂ O is decomposed to generate active oxygen and O _2, and the ionization of sodium salt (NaCl) is promoted by the action of active oxygen, so that hypochlorous acid (HClO) and chloric acid (ClO ) Is generated. Na ions collect at the cathode and decompose H ₂ O to produce sodium hydroxide (NaOH) to make the electrolyte alkaline water. Therefore, oxygen gas from the anode and H ions generated from both the anode and the cathode from the cathode become hydrogen gas, both of which become bubbles and rise toward the water surface 12.
When a sodium compound such as sodium bicarbonate containing no chlorine is added as an electrolyte, hypochlorous acid having a strong bactericidal power is not generated, but electrolytic cleaning water called alkaline ionized water is also generated.

The positive electrode 3 is made by coating a base material such as titanium with noble metal platinum or conductive diamond well known for electrolysis. The negative electrode 4 may be the same as the positive electrode 3, or a base metal such as stainless steel, brass or titanium may be used.
Since the positive electrode 3 is expensive, it is not economical to extend it directly from the lid portion to the electrolyzed water. Therefore, the portion that is not electrolyzed is wasted, and the extended portion connects the base metal electrode extension pipe 6 to the positive electrode 3 by pressure welding or welding. However, if the base metal enters the electrolyzed water, it will corrode violently because it has the same potential as the positive electrode. Even if waterproof paint or the like is applied to this part, the progress of this corrosion cannot be stopped.
The present invention has devised a method for preventing corrosion by covering a portion of the base metal extension pipe 6 that enters the electrolytic water with a heat shrinkable tube. Although the negative electrode has the same structure in FIG. 1, this structure is not necessarily required for the negative electrode.

In the present invention, an electrolytic membrane such as an expensive ion exchange membrane conventionally used is not used. In particular, it has been confirmed that a strong bactericidal power can be obtained by a pH adjusting agent, which will be described later, even in an electrolysis method in which a chlorine compound is added as an electrolyte to obtain bactericidal water.
However, when obtaining electrolyzed water for washing using a sodium compound containing no chlorine as an electrolyte, the pH of alkalinity is not sufficiently high in simple diaphragm-type electrolysis.
Therefore, unlike a conventional electrolytic membrane, a positive electrode is arranged in a paper or cloth bag-like or pipe-like filter that allows not only ions but also solutions to pass through. Thus, reducing the rate at which the bubbles of active oxygen and oxygen gas generated at the positive electrode recirculate to the negative electrode and recombine with hydrogen increases the pH of the electrolytically generated water and increases the detergency. Can be increased negatively.
Although the effect is reduced, this filter may be arranged on the negative electrode side alone, but the effect is greatest when both the positive and negative electrodes are arranged in separate filters. The filter material may be anything as long as it suppresses the reflux of liquid and bubbles, and may be a cylinder of a porous body of resin or ceramics in addition to paper or cloth.
The fact that the filter has the same effect even in a pipe shape without a bottom shows that the present invention is basically different from the conventional diaphragm type electrolysis in which both electrodes are sealed and separated by a membrane.

Next, unlike the conventional simple electrolyzing water for sterilization, a method for carrying out the present invention for obtaining strong sterilizing water by adding a special pH adjusting agent before and after the generation will be described.
When salt water having a concentration of about 0.2% is electrolyzed, active oxygen generated at the anode 3 reacts with the added salt to generate hypochlorous acid (HClO). However, since sodium hydroxide is produced at the cathode, the alkaline pH of the electrolyte gradually increases. Then, it is known that hypochlorous acid will change to chloric acid (ClO) whose sterilizing power is about 80 times weaker.
This chloric acid is abundant in sodium hypochlorite water used at home, and its bleaching power is conversely superior to hypochlorous acid. This electrolyzed water can be used as bleaching water unless the pH is adjusted.
Therefore, in order to obtain strong sterilizing / deodorizing water from the electrolyzed water, the pH must be lowered by adjusting the pH. However, when a strong acid PH tonicity agent is added to a pH of 3 or less, hypochlorous acid generates toxic chlorine gas.
In the present invention, about 0.5% of ethyl alcohol is added as the pH adjuster before electrolysis. Alternatively, a distilled liquor containing an equivalent amount of ethyl alcohol may be used. If it is not a distilled liquor but a brewed liquor that contains carbohydrates or the like in advance, the production of hypochlorous acid is greatly inhibited.
If it is a pH adjuster after electrolysis, a carbonated beverage is added at around 10%, or wine at around 3%. By carrying out like this, the strong sterilization water of the slightly acidic hypochlorous acid from PH5 to PH7 considered to be safe for sterilization of food can be obtained.
In addition, even if carbonated water is mixed with sugar and carbohydrates like cider, depending on the type, sufficient bactericidal power can be obtained immediately after addition after electrolysis, but the bactericidal power has a half-life of about 10 hours. About and shorter. It has also been found that when the pH is adjusted with pure carbonated water or the like, the half-life is extended to several months if sunlight is shielded.

Next, a method for obtaining electrolyzed water for cleaning, which is a special device according to the present invention, will be described. The first performance goal is to produce electrolyzed water with a high alkalinity of PH12 or higher, which exceeds the pH 11.2 of sodium carbonate solution even over a long time of about 12 hours. For this purpose, the positive electrode is covered with a filter bag made of cloth or a tube.
Electrolytic cleaning water is also called alkaline ion cleaning water. The higher the alkalinity, the higher the ability to decompose (saponify) oils and fats, but even if you make a solution with the same pH from caustic sorter or sodium hydrogen carbonate solution and wash it, the cleaning effect is as good as that of electrolytic cleaning water. It was confirmed that it was not possible. From this result, it can be inferred that the oxidation-reduction potential of the electrolytic cleaning water is also an element related to the cleaning power. It is necessary to make the redox potential as low and negative as possible, that is, to obtain wash water having a reducing power that is as high as possible and that has a reducing power. It was confirmed that a filter such as a bag according to the present invention can increase the oxidation-reduction potential negatively.
This cloth filter should be as fine as possible, and it is more effective to use a double bag. If it is disposable, it may be a paper bag or a cylindrical pipe having pores made of hydrophilic resin or ceramic. These pores do not need to be a high-grade porous film as described in “Patent Document 12”, and a sufficient effect can be obtained only by suppressing convection of bubbles and water. Paper and cloth differ from the current general scientific category with “porous membranes”, and the uniqueness of the present invention is clear.

A special second goal according to the present invention is to make the temperature of the electrolytic cleaning water high-temperature alkaline electrolyzed water of about 70 ° C. or higher. It is well known that the cleaning effect of fats and oils greatly increases when the temperature of the cleaning liquid rises. ("Patent Document 4")
The present inventor has confirmed that even when the generated electrolyzed water is heated in a microwave oven or the like, the alkalinity is not lowered and the saponification ability is enhanced. An expensive dishwasher heats electrolyzed water using a heater or the like.
The present inventor has noted that electrolysis is inherently exothermic. The electrolytic solution has an equivalent resistance although it varies greatly depending on the temperature, and generates heat by the product of the square of the electrolytic current and the equivalent resistance based on Ohm's law. This equivalent resistance is determined not only by temperature but also by electrolyte concentration, electrode area, and distance between electrodes. Since normal electrolysis reduces heat generation and places importance on efficiency, the distance between the electrodes is set to several mm.
In the present invention, the calorific value is used for increasing the temperature of the electrolytic solution, and the distance between the electrodes is set to 8 mm or more. However, if it is 20 mm or more, it cannot be inserted into a PET bottle, and there is a danger that the voltage becomes as high as 24 V or more, and the amount of electrolyte to be added becomes larger than necessary.
The present invention also devised a system that employs a heat retaining bottle instead of a PET bottle or the like as a container so that high-temperature electrolytic cleaning water can be obtained continuously only by heat generation during electrolysis without using a heater.
At this time, since the temperature of the electrolytic solution varies greatly, it is preferable to use a constant current controller as a power source. In this way, a constant electrolytic current can be maintained even if the equivalent resistance of the electrolytic solution is considerably reduced. As the temperature increases, the amount of heat generation also decreases and the temperature is maintained at an appropriate temperature.

Finally, a method for producing electrolytic hydrogen water according to the present invention will be described. Hydrogen water is obtained by dissolving hydrogen bubbles generated at the cathode during electrolysis in water. The capacity of this hydrogen water is determined by the hydrogen activity and the dissolved concentration of hydrogen.
The inventors have found that the hydrogen activity is determined by the thickness of the metal oxide film on the anode. The inventor named the phenomenon of water electrolysis as the first tunnel phenomenon, and named the phenomenon that occurs in the nano-sized oxide film on the anode surface as the second tunnel phenomenon. ("Patent Documents 10 and 11")
Even though platinum has an oxide film of about 1.8 nm on the surface, the tunnel voltage over which electrons jump is about 1.5V. This is the second tunnel voltage named by the inventor. The larger the tunnel voltage, the more oxygen and hydrogen generated at the anode are activated, and they become active oxygen and active hydrogen. In the conventional theory, although it was said to be the catalytic action of platinum and was said to be an overvoltage of electrolysis, it was found that the true identity is this second tunnel voltage, but it will not be described in detail here.
As the positive electrode, a conductive diamond coating may be used in place of the platinum coating, and the oxide film is thicker in this case, and the activity of the generated active hydrogen is higher. The present inventor has found that a nano-oxide film exists in most cases for metals and carbon, and has invented a technique for measuring the film pressure of the oxide film. ("Patent Document 11")
Thus, the hydrogen water obtained from the platinum-coated electrode or the like on the anode is active hydrogen. On the other hand, although it has been chemically revealed that the reduction potential of ordinary stable hydrogen is -420 mV, the reduction potential of hydrogen water obtained by electrolysis theoretically increases to a maximum of about -1000 mV. The inventor has clarified academically that this is because of the second tunnel voltage.

Since the redox potential of the generated electrolyzed water is measured by the redox potential of each hydrogen and the amount of dissolved hydrogen, it is necessary to understand the total value of both. And the reducing power which hydrogen water requires depends greatly on the dissolved concentration of hydrogen.
Since the oxidation component produced on the anode side is used for the reaction with the electrolyte, the electrolyzed water as a whole does not have a filter on the anode side, and the reduction potential increases with the electrolysis time to the minus side. .
When a chlorine compound such as sodium chloride is used as the electrolyte, hypochlorous acid is generated at the same time, which is not preferable for use in a living body. Moreover, when sodium bicarbonate is used, the alkalinity becomes strong and may not be preferable for a living body. Since general drinking water including liquor is in the range of PH3 to PH8, the target pH of the hydrogen water obtained in the present invention is within this range.
In the present invention, hydrogen water in this PH range was generated by adding about half of citric acid and baking soda to tap water and performing electrolysis. It should be noted that vitamin C can be used as the additional electrolyte. Vitamin C fully plays the role of an electrolyte, and it can be expected that the generated electrolytic hydrogen water simultaneously contains the reducing power of vitamin C itself. Baking soda may be added to vitamin C.

Example 1 of the production method of electrolytic sterilization water and the electrolyzed water generator with a sprayer will be described with reference to FIG. The positive electrode 3 is a titanium rod having a diameter of 2 mm and a length of 75 mm, which is obtained by plating a noble metal with platinum. This is fitted into a base metal brass pipe having an inner diameter of 21 mm and a length of 102 mm by 7 mm and joined by pressure welding. The positive electrode support structure 6 is formed by covering and shrinking the heat-shrinkable tube having a length of 108 mm so as to cover the joint. The anode part is now substantially 60 mm long. The negative electrode 4 is only different from the positive electrode without platinum plating, and both the negative and positive electrodes have the same structure.
These electrodes are fixed to the spray sprayer 2 for spraying with an interval of about 15 mm. A 350 cc PET bottle 2 is used as an electrolysis container. The trigger sprayer 2 has a cap structure that can be fixed to the plastic bottle 1 and can be integrated with the plastic bottle 1. The trigger sprayer 2 has a connector 4 for taking in a DC 15V constant voltage power source from an AC adapter 8, and an LED 9 for knowing the optimum electrolyte concentration is attached. The AC adapter 8 has a self-protection function such that the output is intermittent with respect to an overcurrent.
The LED 9 is connected to a current value detection circuit 5, and a current value identification circuit including both is shown in FIG. The LED 9 is composed of red and blue LEDs 1 and 2, and there is a difference of about 1 V in rated current between the light emission voltages of the two as shown in the figure. 350 cc of tap water is put into the PET bottle 1, and about 0.7 g of salt is added as an electrolyte, and about 0.2% of the salt water is used as raw water for electrolysis. The filter 7 shown in FIG. 1 is not used in the case of producing sterilizing water, but there is no problem even if it is used.

When the AC adapter 8 is inserted into the AC power source, the red LED 1 is first lit to know that the power has been supplied. Then, due to the added salt, the equivalent resistance RE of the electrolytic solution in FIG. 2 is reduced, and the electrolytic current flows via R1.
In the case of Example 1, about 350 mA flows at an electrolysis current at a water temperature of 20 ° C., and the blue LED 2 shines instead of red. From this state, it can be known that the electrolysis current is normal. When the life of the electrode comes, current stops flowing.
Table 1 shows the pH and effective chlorine concentration (ppm) of the produced water after electrolysis is continued for 2 hours in this state. The effective chlorine concentration is the concentration of hypochlorous acid that is effective in sterilization.
It becomes alkaline sterilizing water having a concentration approximately 10 times higher than that of general ozone water. In addition, since this component contains a large amount of chloric acid, it has a bleaching effect and was confirmed with a cloth.

After electrolysis, citric acid or cereal vinegar may be added as a PH adjuster. However, in the present invention, a safe PH adjuster that is easily available in homes such as developing countries has been found.
Table 2 shows data obtained by adding them to the electrolytically generated water generated in “Example 1”. Those that can increase the effective chlorine concentration by a factor of 2 or more were selected.
The effective chlorine concentration is measured by adding potassium iodide and titrating with sodium thiosulfate.
The most effective one is pure carbonated water, the effective chlorine concentration is 4 times, and the pH after adjustment is slightly acidic, so that it becomes a powerful sterilizing water that is easy to use. The carbonated water may be cider, beer, or sparkling liquor containing carbohydrates. In addition, white wine has a high acidity of about PH3, so the amount added is small, but red wine is almost the same. Other brewed sakes such as Japanese liquor have also been confirmed to be effective if the amount added is increased by that amount, although PH is not as high as wine.
What should be noted is that the half-life of the bactericidal activity of the PH adjusting agent containing carbohydrates and the like is shortened to about 10 hours. In the case of pure carbonated water, if it was stored in a shading bottle, the half-life was more than one month.
The substance of effective chlorine according to this example is hypochlorous acid and has extremely strong oxidizing power. Therefore, it can be used as a deodorant, and the strength of this deodorizing power was confirmed in pet dogs.

Next, an example in which the pH adjusting agent according to the present invention was added before electrolysis under the electrolysis conditions of “Example 1” is shown. When pure carbonated water containing no carbohydrates or salt was added and the pH was lowered in advance, the effective chlorine concentration increased about 2.4 times.
If the amount of carbonated water is increased a little more than three times, pure carbonated water is an effective pH adjuster regardless of whether it is added before or after electrolysis. It has also been found that the effective chlorine concentration becomes low due to reaction during electrolysis when carbohydrates are included.
It should be noted that some materials were found to be converted to acid during electrolysis even if they were not added before electrolysis. It is ethyl alcohol. This reaction process in which ethyl alcohol is converted to acid can be inferred from the fact that brewed liquor becomes vinegar as fermentation progresses.
When about 0.5% of commercially available anhydrous ethyl alcohol was added before electrolysis, the effective chlorine concentration was about 3 times or more with slightly acidic pH of about PH5. It was confirmed that even in distilled spirits such as shochu and whiskey, the effective chlorine concentration can be controlled to 3 times or more by increasing or decreasing the amount of addition according to the alcohol content. Examples of these experiments are shown in Table 3.

“Example 1-3” was an example of sterilizing water generation. Next, a special device is used for the electrolyzed water generator with a sprayer having the same structure as “Example 1” to generate cleaning water. Example 4 will be described.
The difference from the above embodiment is that the volume of the PET bottle 2 is 500 cc, the effective length of the electrode is 120 mm, and the positive electrode is covered with a bag filter.
The bag filter is formed by stacking two commercially available polyester satin cloths and heat-welding the edges to form a bag of 18 mm × 130 mm.
It is preferable that there is an appropriate gap between the bag filter and the positive electrode for air bubbles to rise. In this embodiment, a resin ladder structure is knitted on the electrode to form a spacer.
Then, about 2 g of sodium bicarbonate is added as an electrolyte instead of sodium chloride, and electrolysis is performed. This electrolytic solution is increased in alkalinity by electrolysis, the effective resistance value is lowered, and the current is greatly increased. Therefore, here, the AC adapter 8 is a 24 V power source having constant current control and a timer function.
The constant current is 320 mA, and the electrolysis is continued and the time variation characteristic of the alkalinity is collected in the cleaning water generation characteristic graph of FIG. The reduction potential of the produced water at this time was -650 mV, indicating a strong reducing power, and electrolytic ion washing water different from mere alkaline water was obtained.
Such electrolytic cleaning water has a pH of about 12.5, but when the reduction potential is measured, it is about -70 mV. The reduction potential was a negative potential, and the higher the value, the better it could be washed with oil tableware. In addition, since the reduction potential decreases with storage, it is preferable that the electrolytic vessel purified water is used immediately after being generated at home as in the present invention.
As can be seen from the graph of FIG. 3, the characteristic that the filter 7 of the bag is “present” has a high alkalinity increasing speed and a high reached PH. Since the PH of alkalinity is displayed in logarithm, when PH is 1.0 different, the alkali ion concentration is 10 times different, and when PH exceeds 12, the detergency is greatly improved. In the present invention, this can be easily generated in the kitchen.
In addition, when an experiment was conducted using a paper bag of disposable chopsticks as the filter 7, the paper bag reached a target value of 12 or more in 12 hours. Further, the effect of the filter 7 was almost the same even when the end of the filter 7 was closed and formed into a bag shape, or opened and formed into a pipe shape.
As is apparent from the results, various filters such as plastic and ceramic can be used as the filter and 7 as long as they inhibit the reflux of the electrolyte.
PH is slightly different depending on the temperature of the same solution due to the characteristics of the measuring instrument and the target liquid. First, the temperature of the same solution is forcibly changed, and the temperature characteristics of the measured PH value are collected and displayed in a graph. Using the slope characteristics of this graph, the PH values of the collected characteristic data are all calibrated to a value of 20 ° C.

Furthermore, although it is basically the same as “Example 4”, Example 5 in which a heat retention bottle of 360 cc is used instead of the PET bottle is shown. A hole was made in the lid of the heat retaining bottle, and the mouth portion of the plastic bottle was cut out and adhered from below, and the bottle was tailored to be used for the experiment.
1 g of sodium bicarbonate was added, the current at the beginning of electrolysis was 200 mA, and the calorific value was about 5 W. The current increased with time, and after several hours, under constant current control of 460 mA, the temperature reached 90 ° C. after 12 hours. The pH measured after cooling was 11.8, and the reduction potential was about -200 mV.
Now, when sprayed on the tableware with oil, I was able to feel a really good cleaning power.
In the case of generating washing water including “Example 4”, the electrolyte to be added is not limited to sodium bicarbonate, but may be a sodium compound such as sodium carbonate. Although the initial values were different in all cases, it was confirmed that the reached PH was the same value.

Next, an example in which electrolytic hydrogen water is obtained by the same method as in “Example 4” will be described. As an electrolyte, 0.5 g of citric acid was added to 0.5 g of sodium bicarbonate. The electrolytic current flowed only 160 mA, but after 6 hours, the pH was 6.3, the reduction potential reached -670 mV, and the dissolved hydrogen concentration reached 0.7 ppm, which is equivalent to saturation. This belongs to the highest class of commercially available electrolytic hydrogen water. Citric acid has the property of suppressing hypochlorous acid production a little, and no effective chlorine component was detected in this example even though the raw water was tap water.
Next, in the same manner as in the case of “Example 1” without the filter 7, an example in which 2 tablets (about 1000 mg) of vitamin C is added as an electrolyte will be shown.
Before electrolysis, the pH was 3.6 and the oxidation-reduction potential was +10 mV. After electrolysis for 2 hours at an electrolytic current of 70 mA (24 V), the oxidation-reduction potential was -380 mV (PH 3.5), and the dissolved hydrogen concentration was 0.7 ppm.
When 500 mg of vitamin C to be added is added, and 0.8 g of sodium bicarbonate as an additional electrolyte is added for electrolysis, the electrolysis current increases to 180 mA, and after 1 hour, the oxidation-reduction potential is -580 mV (PH6 7), the dissolved hydrogen concentration was 0.7 ppm. Although the oxidation-reduction potential varies greatly depending on the pH value, research on the effects for beverages such as the dissolved hydrogen concentration reaching a saturation value in a short time is expected in the future.

    Compared with a flowing water type electrolyzer, the present invention generates about 500 cc of electrolyzed functional water over a relatively long time, and is basically used for home use. Of course, it can be used with automobile battery power and solar batteries, so it can be used outdoors. These functional waters according to the present invention can be easily produced, such as infectious disease countermeasures, pet deodorization, sterilization of restaurant chopsticks and cutting boards, washing of kitchens and tableware, and production of beverages for vitalizing living bodies. It is wide.

1 PET bottle 2 Trigger sprayer
3 Positive electrode 4 Negative electrode 5 Base metal cathode extension pipe covered with heat-shrinkable tube 6 Base metal anode extension pipe covered with heat-shrinkable tube 7 Bag-shaped filter 8 AC adapter 9 Power supply connector 10 Current value detection circuit 11 LED display 12 Liquid level of electrolyte 13 Suction pipe for spraying 14 Insulating bottle instead of PET bottle

Claims (8)

  Water such as tap water and electrolyte is put into a small container such as a PET bottle to make raw water for electrolysis, and a trigas player for liquid spraying is integrated with the lid of this small container, and a positive electrode and a negative electrode are added to this trigas player. The electrolyzed water generator is characterized in that the tip side of both electrodes is inserted into the raw water for electrolysis in a small container, and DC power is supplied to both electrodes to obtain electrolyzed water.   An electrolyzed water generator characterized in that a portion of a positive electrode that is inserted into raw water for electrolysis is surrounded by a bag-like or pipe-like filter made of cloth or paper containing chemical fibers.   An electrolyzed water generator characterized in that a base metal is joined to a positive electrode of precious metal by pressure welding or welding to extend the entire electrode, and a portion to be inserted into the electrolyzed water of the base metal portion is covered with a heat shrinkable tube. .   The electrolyzed water generator according to claim 1, wherein a heat retaining bottle is used as a small container for storing raw water for electrolysis.   It is characterized by adding chlorinated compounds such as salt to the water such as tap water and electrolyzing by adding ethyl alcohol containing distilled liquor before electrolysis to obtain sterilized water with high hypochlorous acid concentration. A method for generating electrolyzed water.   Electrolysis is carried out by adding a chlorine compound such as salt to the water such as tap water, and brewed liquor such as wine or carbonated beverages including cider, sparkling liquor and beer are added to the electrolyzed water after this electrolysis. A method for producing electrolyzed water, characterized in that sterilized water having a high concentration of hypochlorous acid is obtained.   A method for producing electrolyzed water, characterized in that by adding sodium bicarbonate and citric acid to tap water or the like, electrolysis is performed to obtain reducing hydrogen water between PH3 and PH8.   A method for producing electrolyzed water, characterized in that vitamin C is added to water such as tap water to perform electrolysis to obtain hydrogen water for reduction.

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