KR101053430B1 - Deposition type strong acid water generator - Google Patents

Abstract

The present invention was developed to easily prepare and use strong acidic water having strong sterilization power. The electrolytic cell and ion which can be detachable in a cylindrical shape with a structure different from a direct diaphragm-type strong electric water (strong acidic water, strong alkaline water) generating device using a general diaphragm are used. The exchange membrane is used to ensure the compactness of the device and to improve the efficiency of generating strong acidic water.

Immersion type, strong acidic water, electrolysis, ion exchange membrane, saturated salt

Description

Immersion Type Strong Acidic Water Manufacturing Apparatus

The present invention relates to a deposition type strong acidic water generator for producing strong acidic water by electrolyzing saturated salt water when strong acidic water having strong sterilization power is required.

The general growth of strong electrolytic water (strong acidic water, strong alkaline water) currently developed and applied is added to the tap water with a small amount of chloride (NaCl, KCl) and then electrolyzed using a sealed electrolytic cell consisting of a diaphragm and an electrode. ⁺ And Cl ₂ are generated and Cl ₂ reacts with H ₂ 0 to produce strong acidic water with pH less than 2.7 (see Structural formula). At the same time, OH ^- and H ² are generated on the cathode side and strong alkaline water with pH of 11 or more is generated.

The reaction at the anode and cathode is as follows.

<Anode>

_{H 2 O → 1 / 2O 2} + 2H + + 2e -

2Cl ^- → Cl ₂ + 2e ^-

HCl + HOClCl ₂ (aq) + H ₂ O

HCl + HOCl

<Cathode>

_{^{2Na + + 2H 2 0 - +}} 2e - → 2NaOH + H 2 ↑

The strong acidic water produced at the anode has a pH of less than 2.7 and contains HOCl, which has a strong oxidation effect, and its oxidation-reduction potential is more excellent than that of conventional disinfectants. Toxicity is known to be excellent. Due to the low effective chlorine concentration and acidity, hand roughness is less than that of sodium hypochlorite, and the safety of human body is high (acute toxicity, subacute toxicity). Even if it gets into eyes, swallows, or accidental accidents, it is thought that the possibility of accidental injury is very small, and even if it is released to the environment, the concentration is low and it is easy to decompose, so it is expected to be less harmful to the environment. It is a sterilized functional water that has not been found.

The strong alkaline water produced at the negative electrode is pH 11 or more, and it is a functional water having a strong cleaning effect because the solubility of proteins and fats is greater than that of ordinary products.

The electrolytic water generating device using the diaphragm-type hermetic electrolytic cell of the general water direct type can be classified into ionized water and electrolyzed water according to the addition of electrolyte. That is, the ionized water is to be discharged into the alkaline water and the alkaline water of the negative electrode portion and the positive electrode portion electrolytically separated from the electrolytic cell.

Electrolyzed water is a strong alkali water produced at the cathode portion and a strong acidic water produced at the anode portion by adding an electrolyte such as salt to the raw water, strong acidic water is used for sterilization disinfection and strong alkaline water is used for cleaning or water treatment.

The electrolyzed water generating device employing such a diaphragm-type hermetically sealed electrolytic cell has many advantages. However, when electrolyzed water is produced by adding an electrolyte such as brine to raw water, the electrolyzed water is directly connected. May contain unreacted brine (usually known as ~ 0.05% of unreacted brine in strong acidic water using a general diaphragm), and the anode and cathode chambers are separated by a general porous polymer diaphragm. A part of the product produced at the cathode cannot be prevented from penetrating through the diaphragm and diffusing into the electrode chamber on the opposite side. This may cause a reduction in the efficiency of the electrolyzed water because the products generated in the positive electrode and the negative electrode react with each other to be reduced to water.

In addition, the purpose of using strong acidic water as a disinfectant disinfectant, but the production of strong acidic water at the same time as the production of strong acidic water is inevitable, thereby causing the waste of water resources by discharging and removing the generated strong alkaline water.

The present invention is to provide a submerged strong acidic water generating device that can be reduced in size by applying a simple and simple configuration and to prevent the unreacted salt is mixed in the generated strong acidic water to generate a high purity strong acidic water.

In addition, the present invention is to provide a deposition type strong acid water generator that can minimize the generation of strong alkaline water to eliminate the waste of water resources.

The deposition type strong acidic water generator of the present invention for achieving the above object is a negative electrode (11) in which saturated salt water is stored around in the form of a titanium rod, and the negative electrode (11) in a cylindrical shape in which a platinum group precious metal is sintered on titanium. The positive electrode 12 positioned around the positive electrode 12 and generating hypochlorous acid (HClO) and the dissociated Cl ⁻ ions positioned between the positive electrode 12 and the negative electrode 11 selectively passes toward the positive electrode 12 and the negative electrode ( 11) an electrolytic cell 10 including an ion exchange membrane 13 for concentrating NaOH generated in the periphery, and a housing 14 for fixing the negative electrode 11, the positive electrode 12, and the ion exchange membrane 13; As the storage container for accommodating the electrolytic cell 10 and storing the raw water, the electrolytic cell 10 is deposited and hypochlorous acid generated from the positive electrode of the electrolytic cell 10 is mixed with the supplied raw water to generate strong acidic water. Strong acid water generating vessel 20 for discharging the; A current supply unit converting AC electricity into DC to supply DC electricity to the electrolytic cell 10; It is characterized in that it comprises a; control unit 30 for controlling the current supply and operation of the current supply unit.

In addition, at least one through hole 15a is formed between the negative electrode 11 and the ion exchange membrane 13 and surrounds the negative electrode 11, and stores the saturated salt water supplied around the negative electrode 11 to store the negative electrode. Electrolyte accommodating portion 15 to further promote the electrolysis of (11) to suppress the generation of unreacted brine is characterized in that it is further provided.

In addition, the electrolytic cell 10 is characterized in that the detachable from the strong acid water generating vessel (20).

In addition, the control unit 30 is characterized in that it detects the current generated in the electrolytic cell 10 to inform the exchange time of the electrolyte and the discharge time of NaOH concentrated around the negative electrode.

It is common to use chlorides with saturated concentrations such as NaCl and KCl as the electrolyte used in the immersion strong acid water generator, but the concentration of NaOH in the electrolyte around the negative electrode increases due to the concentration of the strong acid water generator. This may affect the purity of the strongly acidic water generated. Therefore, it is preferable to add some acid to the electrolyte to neutralize NaOH generated around the negative electrode. Hydrochloric acid may be used, but it is recommended to add 10% to 15% citric acid for stability and convenience of handling.

In addition, the immersion-type strong acidic water generator according to the present invention is characterized in that the hand washing is possible by generating the raw water supplied in the strong acidic water is provided with a hand washing machine to wash the hands by supplying the raw water.

In addition, the immersion-type strong acidic water generator according to the present invention is provided in the water tank of the ultrasonic humidifier to generate stored water as strong acidic water to prevent bacterial growth in the water tank.

In addition, the immersion-type strong acidic water generator according to the present invention is provided with a domestic water purifier equipped with a storage tank for supplying purified water by filtering the raw water with a filter to generate the raw water supplied by the strong acidic water to increase the bacterial growth of the filter and the reservoir It is characterized by preventing.

In addition, it is mounted on the toilet of the toilet to generate the washing water in the toilet storage tank with strong acidic water to prevent odor and bacteria, mold growth of the toilet.

The present invention is simple and simple in structure and can be miniaturized, so that unreacted salts are not mixed in the generated strong acidic water to generate high purity strong acidic water, and minimize the generation of strong alkaline water to eliminate the waste of water resources. It can be effective. In addition, by preventing the mixing of unreacted salt water in the generated strong acid water, it has the effect of increasing the efficiency of generating strong acidic water and producing strong acidic water of high purity. Compared to the strong acid water generator, the power consumption is low.

Hereinafter, a deposition type strong acid water generator according to the present invention will be described with reference to the accompanying drawings.

1 is a view showing the deposition type strong acid water generator according to the present invention, Figure 2 is a view showing an electrolytic cell of the deposition type strong acid water generator according to the present invention.

As shown, the immersion type strong acid water generator 100 of the present invention is a negative electrode 11, the saturated salt is supplied to the surroundings, the cylindrical electrode is located around the negative electrode 11 and generates hypochlorous acid (HClO) An ion exchange membrane positioned between the positive electrode 12 and the positive electrode 12 and the negative electrode 11 to selectively pass only Cl ⁻ ions toward the positive electrode 12 and to concentrate NaOH generated around the negative electrode 11 ( An electrolyzer 10 comprising a housing 14 to which the negative electrode 11, the positive electrode 12, and the ion exchange membrane 13 are fixed; A strong acid generator for accommodating the electrolytic cell 10 and supplying raw water to deposit the electrolytic cell 10 and hypochlorous acid mixed to generate strong acidic water; A current supply unit converting AC electricity into DC to supply DC electricity to the electrolytic cell 10; It comprises a; control unit 30 for controlling the current supply and operation of the current supply unit.

The electrode applied to the present invention is composed of a negative electrode 11 and a positive electrode 12, the negative electrode 11 used a rod-shaped electrode made of titanium, the positive electrode is a cylindrical electrode in which the terminal block is integrated as a platinum group material on titanium The sintered insoluble catalyst electrode was used and a cylindrical diaphragm made of an ion exchange membrane 13 was applied between the positive electrode 12 and the negative electrode 11.

In addition, the electrolyte is stored around the negative electrode 11 and the electrolyte receiving portion supporter 15 having the through hole 15a is provided, so that Cl ⁻ ions of the electrolyte around the negative electrode 11 pass through the ion exchange membrane 13 so that the positive electrode ( 12) integrated to be delivered to. The electrolyte container supporter 15 accommodates the negative electrode 11 and supports the ion exchange membrane 13, and the ion exchange membrane 13 surrounds the periphery of the electrolyte container supporter 15 and at least one supporter. By forming the through holes 15a, Cl ⁻ ions in the saturated salts supplied around the negative electrode 11 are transferred to the positive electrode 12 through the ion exchange membrane 13 through the through holes 15a to generate strong acidic water. This prevents the unreacted salt water from being mixed in the strong acidic water generated. In this case, the electrolyte receiving portion supporter 15 may be integrated with the housing 14.

In addition, the electrode set (negative electrode + ion exchange membrane + positive electrode) is fixed to the housing 14, the housing 14 is mounted so as to be deposited in the water stored in the strong acid water generating vessel (20). The strong acidic water generated by the strong acidic water generating container 20 may discharge strong acidic water if necessary.

Electrolyte (salt water) is supplied from the negative electrode 11, and as the electrolysis proceeds, hydrogen gas is generated in the negative electrode 11, and the hydrogen gas generated from the negative electrode 11 is provided with a vent hole provided in the upper portion of the housing 14. To the atmosphere, whereby NaOH is produced as a by-product. The NaOH produced as a by-product is contacted with citric acid added to the electrolyte and partly reduced to water.

When the electrode of this type is applied, the ion exchange membrane selectively passes Cl ⁻ ions to the positive electrode to generate hypochlorous acid (HOCl) at the positive electrode 12. UF membrane) can solve the problem of reducing the efficiency of strong acidic water generated by the presence of-ions and + ions around the diaphragm by the diffusion action, and can generate a high purity strong acidic water containing no salt.

As saturated salt water is supplied around the negative electrode and electrolysis proceeds, NaOH is concentrated around the negative electrode and neutralized with citric acid added to the electrolyte. Therefore, strong alkaline water is not generated, and the electrolyte supplied to the negative electrode 11 is supplied. When (saturated salt + citric acid) was consumed, the housing 14 was simply detached to remove NaOH and unused electrolyte concentrated in the negative electrode 11, and a new electrolyte was simply added to the negative electrode 11. That is, the configuration and structure of the positive electrode, the negative electrode and the anion exchange membrane were simplified to facilitate the desorption, and the device was simplified and devised so that a separate accessory such as a pump was not necessary, thereby miniaturizing the device.

The current supplied to the positive electrode 12 and the negative electrode 11 is supplied by a current supply unit (not shown) for supplying direct current electricity by converting alternating current into direct current. The current supply and operation of the current supply unit is controlled by the control unit 30.

The replenishment and exchange of the electrolyte of the negative electrode 11 is alarmed when a sensor (not shown) for detecting the current generated by the electrode in the controller 30 is mounted so that the electrolytic current generated in the electrolytic cell 10 falls below a certain level. It informs the exchange time of the electrolyte by issuing the electrolyte containing NaOH concentrated in the negative electrode 11 to drain (DRAIN).

In addition, there is an advantage that can be generated from strong acidic water to weak acidic water through the change of the concentration of the electrolyte and the applied current, it is possible to produce sterilized water to meet various requirements in a single electrolyzer.

Precipitating strong acid water generator 100 of the present invention can be applied in various ways.

1) Field-generated hand sterilizer combining hand sterilizer and strong acid water generator

There are various paths of pathogens such as air, insects, people, and environment, but infections caused by contact are the most frequent, and infections caused by hand contact occupy a large part.In general, about 60,000 bacteria reside in the hands of people. It is said that 70% of food poisoning accidents can be prevented by hand washing and hand sanitization.

In general, commercially available hand sterilizers are compact and are designed to be easy to use because they consist of a system that detects the infrared sensor when the hand approaches the disinfectant injection port and operates the pump automatically. Due to the high cost of disinfectant chemicals, large-scale group meals are difficult to apply due to excessive maintenance costs. However, field-generating hand sterilizers, which combine strong acid water generators and hand sterilizers, are simple to install and use. The maintenance cost is low and it is easy to manage, which can be applied to various schools, group meals, hospitals, etc. to contribute to the improvement of national health.

2) Small strong acid water generator-portable

It is possible to manufacture a compact strong acidic water generator by mounting the above-described electrode in a container of 1L ~ 2L, and can produce and use the required amount of strong acidic water through simple operation when a small amount of disinfectant is required at home, kitchen, and hospital.

3) Large strong acid water generator

The container and the electrode can be enlarged to produce a large amount of strongly acidic water. In other words, after determining the amount required for use, select a storage tank with appropriate capacity, and prepare the electrode set. By using the pump, the raw water can be circulated in the storage tank and the electrode set to increase the circulation time in proportion to the amount of raw water stored in the storage tank to produce strong acidic water. Can be used for various sterilizations, such as sterilization.

4) Ultrasonic Humidifier with Diaphragm Electrolyzer

In order to improve indoor air quality and prevent indoor drying, many humidifiers are used. Especially, many ultrasonic humidifiers are used at low cost and convenience, but the adverse effects on indoor hygiene environment are caused by contamination of bacteria and propagation of water used as humidifier. Madness often occurs.

When operating intermittently by using this immersion diaphragm electrolyzer and 1% ~ 2% brine as electrolyte in the container to store the water of the humidifier, the water of the humidifier is changed to weak acid water (pH 5.5 ~ 6.5) Harm caused by bacterial propagation can be prevented.

5) Water purifier with diaphragm electrolytic tank

Currently, the common method used for domestic water purifier is a method of filtering raw water using a reverse osmosis filter or a hollow fiber membrane type filter and storing it in a storage container and drinking it through a cooler or a heater and filtering the raw water. Pass through the pretreatment filter, activated carbon filter, etc., and go through the steps to be stored in the reservoir. In this process, the pretreatment filter or the activated carbon filter acts as a microbial carrier, which causes microorganisms to proliferate and contaminate various bacteria, and diffuses during storage in storage containers. In most cases, chemicals are used when installing or cleaning the reservoir. When the diaphragm electrolyzer is installed in the water purifier reservoir, it is possible to supply clean drinking water at all times by preventing bacterial contamination as described above. In other words, the deposition tank is installed on the upper part of the reservoir, and 1% to 2% of the brine is used as the electrolyte to generate weakly acidic water periodically by a timer, and the total residual chlorine can be managed to be 0.2 ppm or less. Through this process, various accidents caused by bacterial contamination can be prevented in advance.

6) Flush toilet with immersion diaphragm electrolyzer

It is equipped with a sedimentary diaphragm electrolyzer on the water storage tank of the toilet and has excellent sterilizing and cleaning effect. In the case of toilet, cleaning is especially important, and cleaning is performed periodically using strong detergent as the key to maintaining hygiene, but it is difficult to keep clean because of unspecified use and is often contaminated with bacteria Is likely to occur.

The above problems can be solved by installing the immersion diaphragm electrolyte tank in the toilet storage tank. In other words, it is possible to convert the water in the reservoir tank into strong acidic water by installing the immersion diaphragm electrolytic tank in the toilet tank and operate it in conjunction with the water level regulator in the tank. Sterilization and disinfection make it possible to build a comfortable restroom.

In addition to the applications mentioned above, various products and the present strong acid generator can be used for sterilization.

1 is a view showing a deposition type strong acid water generator according to the present invention.

Figure 2 is a view showing an electrolytic cell of the deposition type strong acid water generator according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: electrolyzer 11: negative electrode

12: positive electrode 13: ion exchange membrane

14 housing 15 electrolyte compartment

15a: through hole 20: strong acid water generating container

30: control unit 100: deposition type strong acid water generator

Claims (8)

delete The negative electrode 11, which is in the form of a rod made of titanium and is supplied with saturated salt water containing citric acid, is formed into a cylindrical shape in which a platinum group precious metal is sintered and coated in titanium, and dissociated by Cl ⁻ ions dissociated around the negative electrode 11. A positive electrode 12 generating hypochlorous acid (HClO) and NaOH generated between the positive electrode 12 and the negative electrode 11 and selectively passing only Cl ⁻ ions toward the positive electrode 12, and formed around the negative electrode 11. An electrolytic cell (10) comprising an ion exchange membrane (13) for concentrating and a housing (14) for fixing the negative electrode (11), the positive electrode (12) and the ion exchange membrane (13); The hypochlorous acid generated in the electrolytic cell 10 is mixed with the raw water supplied by depositing the electrolytic cell 10 as a storage container for accommodating the electrolytic cell 10 and storing the raw water to generate a strong acidic water and discharge the generated strong acidic water. Strong acid water generating vessel 20; A current supply unit converting AC electricity into DC to supply DC electricity to the electrolytic cell 10; A controller 30 for controlling the current supply and operation of the current supply unit; And Located between the negative electrode 11 and the ion exchange membrane 13, the ion exchange membrane 13 is supported, surrounds the negative electrode 11, at least one through hole 15a is formed, and is supplied around the negative electrode 11. And an electrolyte accommodating portion supporter 15 for storing the saturated salt water. 3. The method of claim 2, The electrolytic cell 10 is a deposition type strong acid water generator, characterized in that detachable from the strong acid water generating vessel (20). 3. The method of claim 2, The control unit 30 detects the current generated in the electrolytic cell 10 to indicate the exchange time of the electrolyte and the discharge time of NaOH concentrated around the negative electrode. The integrated strong acidic water generator according to any one of claims 2 to 4, wherein the deposition type strong acidic water generator is provided with a hand sterilizer to generate raw water of the hand sterilizer with strong acidic water to wash the hands. The deposition type strong acidic water generator according to any one of claims 2 to 4 is provided in the storage tank of the ultrasonic humidifier to generate the water stored in the storage tank as strong acidic water to increase the bacterial growth of the storage tank and the humidifier water (water in the storage tank). Humidifier integrated strong acid water generator, characterized in that to prevent. The deposition type strong acid water generator according to any one of claims 2 to 4, wherein the raw water is filtered through a filter to supply purified water and is provided in a household water purifier equipped with a storage tank for storing purified water. The water purifier integrated strong acid water generator, characterized in that to prevent the growth of bacteria in the filter and reservoir. The integrated strong acid water generator of the toilet according to any one of claims 2 to 4, wherein the strong acid water generating device according to any one of claims 2 to 4 generates water in the toilet bowl as strong acid water to prevent contamination and bacterial growth inside the toilet. .

Images