Fine bubble, hypochlorous acid water and / or sodium hypochlorite water production equipment

Abstract

To provide an apparatus for producing fine bubbles, hypochlorous acid water and / or sodium hypochlorite water, which can produce fine bubbles, hypochlorous acid water and / or sodium hypochlorite water with enhanced disinfecting and sterilizing effects of chlorous acid water and / or sodium hypochlorite water. [Solution] The system includes a water supply source 2 that supplies water 20, a fine bubble processing unit 3 that converts the water 20 or an aqueous solution to which a pH adjuster 40 has been added into fine bubble water or a fine bubble aqueous solution into microbubbles and / or ultrafine bubbles, a pH adjuster supply source 4 that adds a pH adjuster to the water 20 or fine bubble water to convert the water solution or the fine bubble aqueous solution, and at least one main agent supply source 5 that adds hypochlorous acid 51 or sodium hypochlorite 52 to the fine bubble aqueous solution.

Description

[Technical field]

[0001] This invention relates to a technology for producing hypochlorous acid water, which is used for sterilization, bacteriostatic control, and disinfection in a wide range of fields, including food hygiene, medicine, agriculture, forestry, and fisheries, and in particular to a manufacturing device for fine bubble hypochlorous acid water and / or sodium hypochlorite water that utilizes fine bubble generation technology to enhance the cleaning function of water. [Background technology]

[0002] Hypochlorous acid aqueous solution and sodium hypochlorite aqueous solution are used as disinfectants in a wide range of fields. Previous hypochlorous acid water production equipment had the disadvantage that maintenance costs were high because it required an electrolytic cell. In addition, when sodium hypochlorite and strong acid were handled simultaneously in one equipment, there was a high risk that sodium hypochlorite aqueous solution and strong acid aqueous solution were mistakenly supplied to the same column at the same time.

[0003] For example, Patent Document 1 (JP 2024-35742 A) discloses a hypochlorous acid water production device that includes a water pipe for guiding tap water, a carbon dioxide gas supply unit for supplying carbon dioxide gas to the tap water guided by the water pipe, and a sodium hypochlorite solution supply unit for supplying sodium hypochlorite solution to the tap water to which the carbon dioxide gas has been supplied, and a constant flow valve is provided upstream of the carbon dioxide gas supply unit in the water pipe. The sodium hypochlorite solution supply unit is composed of an ejector that sucks in sodium hypochlorite solution using tap water flowing through the water pipe as a driving fluid, and does not require an electrolytic cell, reduces maintenance costs, and is more economically advantageous.

[0004] Also, Patent Document 2 (Japanese Patent No. 7368657) describes a sodium hypochlorite aqueous solution storage tank, a strong acid storage tank, an ion exchange column filled with a weakly acidic cation exchange resin, a recovery liquid storage tank for storing a chemical solution that has been ion-exchanged, a chemical solution supply pipe for supplying the chemical solution from the sodium hypochlorite aqueous solution storage tank to the ion exchange column, an on-off valve provided in the chemical solution supply pipe, an acid supply pipe for supplying a strong acid aqueous solution from the strong acid aqueous solution storage tank to the ion exchange column, an on-off valve provided in the acid supply pipe, and a recovery liquid storage tank for storing a chemical solution that has been ion-exchanged. The apparatus includes a treated chemical transfer pipe for transferring the ion-exchanged chemical solution to the ion exchange column, and a waste liquid pipe for flowing waste liquid discharged from the ion exchange column, and the on-off valve and the on-off valve are both valves that are opened and closed based on a signal transmitted under program control, and further includes a control mechanism that, independent of the program control, forces the on-off valve and the on-off valve not to be in the "open" state at the same time, thereby producing acidic hypochlorous acid water with high productivity while significantly reducing the risk of accidentally generating chlorine gas. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2024-35742 A [Patent Document 2] Patent No. 7368657 [Patent Document 3] Patent No. 7012482 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the hypochlorous acid water manufacturing apparatus of the aforementioned Patent Document 1 (JP Patent Publication No. 2024-35742 A) and the acidic hypochlorous acid water manufacturing apparatus of the aforementioned Patent Document 2 (JP Patent Publication No. 7368657 A) can produce hypochlorous acid water with the same disinfecting and bactericidal effects when adjusted to the same pH, but they were not manufacturing apparatuses that could further enhance the disinfecting and bactericidal effects of hypochlorous acid water adjusted to the same pH.

[0007] In view of the above circumstances, the present invention provides an apparatus for producing fine bubbles, hypochlorous acid water and / or sodium hypochlorite water, which has superior cleaning and disinfecting power compared to ordinary chlorous acid water or sodium hypochlorite water produced at a specified pH by conventional production apparatus.

[0008] This invention provides fine bubble hypochlorous acid water that further enhances the cleaning and disinfecting power of conventional hypochlorous acid water. The present invention provides fine bubble sodium hypochlorite water that has improved cleaning and disinfecting power compared to conventional sodium hypochlorite water. [Means for solving the problem]

[0009] The present invention provides an apparatus for producing fine bubble hypochlorous acid water and / or sodium hypochlorite water, comprising a water source for supplying water, a fine bubble treatment section for producing bubbles with diameters of less than 100 μm in the water or in an aqueous solution obtained by adding a pH adjuster to the water to produce fine bubble water or a fine bubble aqueous solution, a pH adjuster source for adding a pH adjuster to the water or the fine bubble water to produce an aqueous solution or a fine bubble aqueous solution, and a main agent source for adding hypochlorous acid and / or sodium hypochlorite (hereinafter referred to as main agent) to the fine bubble aqueous solution.

[0010] The fine bubble / hypochlorous acid water and / or sodium hypochlorite water manufacturing device can produce fine bubble / hypochlorous acid water and / or sodium hypochlorite water, each of which has superior cleaning and disinfecting power compared to general sodium hypochlorite water and / or sodium hypochlorite water. It is known that hypochlorous water / sodium hypochlorite aqueous solution is effective in gradually dissolving and eliminating organic matter (pollutants, slime (biofilms) caused by the proliferation of microorganisms such as bacteria and viruses) attached to floors, walls, cooking equipment, etc., when used continuously over a long period of time, but it is not effective in peeling off and cleaning the adhesive surface of such organic matter in a short period of time. Therefore, even if hypochlorous acid water or sodium hypochlorite aqueous solution is poured onto a surface with a large amount or layer of such organic matter, it will have a superficial effect, but it has not been found to be effective on the bacteria, etc., on the layer below (or inside) in actual use. On the other hand, although microbubble water does not have a bactericidal effect, it is known that it has the effect of peeling off the adhesive surface of the above-mentioned organic matter (surface activity effect). Therefore, by making hypochlorous water / sodium hypochlorite aqueous solution into a solution containing microfine bubbles, a bactericidal aqueous solution with an added surface activity effect is generated. As a result, it is possible to improve the reduction in the bactericidal effect on attached organic matter, which has been considered a weakness of hypochlorous acid water until now. Furthermore, even in the case of sodium hypochlorite aqueous solution, which is said to have a greater dissolving effect than hypochlorous acid water, by incorporating these microfine bubbles before use, it is expected that the bactericidal effect will increase in a shorter period of time.

[0011] The fine bubble processing unit creates bubbles with a diameter of less than 100 μm in the water or an aqueous solution obtained by adding a pH adjuster to the water. The fine bubble processing unit can create bubbles with a diameter of less than 1 μm in the water or the aqueous solution. The fine bubbles turn the water or the aqueous solution into fine bubbles that can enter fine grooves, and can enter fine grooves with a width or diameter of less than 100 μm that cannot be entered with general hypochlorous acid water and / or sodium hypochlorite water, thereby achieving a higher cleaning power. The fine bubble processing unit can generate fine bubbles by any of the following principles: crushing of bubbles by shearing the liquid, precipitation of dissolved gas in the liquid, and rapid condensation of steam bubbles. The fine bubbles exist in the water or the aqueous solution as microbubbles (diameter 1 to 100 μm) and / or ultrafine bubbles (diameter less than 1 μm), and the finer the diameter of the bubbles, the higher the cleaning power and sterilization power can be.

[0012] The pH adjuster supply source adds a pH adjuster to the water or the fine bubble water to form an aqueous solution or a fine bubble aqueous solution. The pH adjuster supply source may be provided with a pH meter and a control unit that feedback controls the supply amount of the pH adjuster based on the detected value.

[0013] The pH adjuster supply source can add the pH adjuster to the water or fine bubble water to adjust the pH of the fine bubble-sodium hypochlorite water to a value exceeding 7.5. The pH adjuster supply source can be provided in a total of two or more, including one that operates when producing the fine bubble-hypochlorous acid water and another that operates when producing the sodium hypochlorite water.

[0014] The main agent supply source may be provided with at least one source for adding the main agent to the fine bubble aqueous solution. The main agent supply source may add sodium hypochlorite to the fine bubble aqueous solution to make the fine bubble sodium hypochlorite aqueous solution have a pH value exceeding 7.5.

[0015] The main agent supply source can add sodium hypochlorite (for example, 100 to 1,000 ppm) to the fine bubble aqueous solution to produce fine bubble sodium hypochlorite water. The main agent supply source has, for example, a plurality of supply tanks each containing a plurality of main agents such as the hypochlorous acid or the sodium hypochlorite, and a switching valve for switching between and supplying the plurality of main agents.

[0016] It is known that the sodium hypochlorite water has a concentration of 100 to 200 ppm suitable for sterilizing vegetables, 200 ppm suitable for sterilizing cooking utensils and cleaning the environment against norovirus, and 1,000 ppm suitable for treating vomit. The main agent supply source can be provided with a chlorine concentration meter and a control unit that feedback controls the supply amount of the main agent based on the detected value. The main agent supply source can supply at least one of sodium dichloroisocyanurate, calcium hypochlorite, and / or sodium hypochlorite.

[0017] The fine bubble / hypochlorous acid water and / or sodium hypochlorite water manufacturing apparatus has one piping path with the water supply source connected to its base end, and the pH adjuster supply source and the main agent supply source are arranged along the piping path, thereby enabling the fine bubble / hypochlorous acid water and / or sodium hypochlorite water to be manufactured.

[0018] The fine bubble / hypochlorous acid water and / or sodium hypochlorite water manufacturing device has, for example, two or more piping paths connected at their base ends to the water supply source, and the pH adjuster supply source and the main agent supply source are arranged along each of the piping paths, and the fine bubble / hypochlorous acid water and / or sodium hypochlorite water can be manufactured for each of the piping paths.

[0019] The present invention can be a fine bubble hypochlorous acid water and / or sodium hypochlorite water manufacturing device, in which the pH adjuster supply source is equipped with at least one supply amount control unit that adjusts the pH of the fine bubble hypochlorous acid water to 4.5 or more and 7.5 or less, or adjusts the pH of the fine bubble sodium hypochlorite water to more than 7.5.

[0020] The pH adjuster source adjusts the pH of the fine hypochlorous acid bubble water produced to 4.5 or more and 7.5 or less, thereby further enhancing the bactericidal performance of the fine hypochlorous acid bubble water. The pH adjuster source also adjusts the pH of the fine sodium hypochlorite bubble water produced to a value exceeding 7.5, thereby further enhancing the bactericidal power of the fine sodium hypochlorite bubble water.

[0021] The fine bubble hypochlorous acid water and / or sodium hypochlorite water manufacturing apparatus includes, for example, a water supply source for supplying water, a piping line having the water supply source at its end, a buffer tank connected to the downstream end of the piping line, a main agent supply source for adding a main agent located between the water supply source and the buffer tank in the piping line, a pH adjuster supply source for adding a pH adjuster to the water to form an aqueous solution between the water supply source and the main agent supply unit in the piping line, a fine bubble generation treatment unit for generating bubbles with diameters of less than 100 μm in the water or aqueous solution between the water supply source and the raw material supply unit in the piping line, and a discharge valve provided in the buffer tank.

[0022] By disposing the fine bubble processing unit between the water supply source and the main agent supply unit in the piping, the water or aqueous solution can be treated with fine bubbles before the main agent supply unit is added, so that violent chemical reactions caused by the fine bubble treatment of the hypochlorous acid water or sodium hypochlorite water can be prevented. Furthermore, by adding the main agent to the fine bubble water or aqueous solution that has been treated with fine bubbles, the mixture is mixed more smoothly while flowing through the piping, and the fine bubble hypochlorous acid water or fine bubble sodium hypochlorite water can be produced more uniformly.

[0023] The fine-bubble processing unit may be, for example, a swirling flow type, an ejector type or a Venturi type, a micropore type, a pressurized dissolution / precipitation type, and / or a cavitation type, and thus performs fine-bubble processing with a flow that vigorously stirs the water or aqueous solution, thereby enabling additives such as the pH adjuster and the main agent to be mixed and homogenized more efficiently.

[0024] By providing the fine bubble treatment unit between the water supply source and the pH adjuster supply source in the piping, a pH adjuster can be added to the fine bubble water after the fine bubble treatment, allowing for more efficient mixing and homogenization than when the pH adjuster is added to normal running water.

[0025] The fine bubble treatment unit can be provided between the pH adjuster supply source and the main agent supply source. This structure allows the main agent to be mixed into the fine bubble aqueous solution immediately after stirring, resulting in more homogenization.

[0026] The fine bubble processing unit can be provided between the water supply source and the pH adjuster supply source in the piping, and between the pH adjuster supply source and the main agent supply source. With this structure, the water supplied from the water supply source is converted into fine bubble water, and a pH adjuster is added to the fine bubble water, so that a more homogeneous fine bubble aqueous solution can be efficiently produced. Furthermore, since the fine bubble aqueous solution is subjected to the fine bubble processing again, fine bubbles with a higher density can be produced, and additives such as the pH adjuster and the main agent can be mixed and homogenized more efficiently.

[0027] The fine bubble hypochlorous acid water and / or sodium hypochlorite water manufacturing device can be provided with the secondary pH adjuster supply source between the main agent supply source and the buffer tank or the discharge valve. The secondary pH adjuster supply source can supply carbon dioxide gas as the secondary pH adjuster. By adding carbon dioxide gas as the secondary pH adjuster to the fine bubble hypochlorous acid water and / or sodium hypochlorite water produced by adding the main agent to the fine bubble aqueous solution, the carbon dioxide gas becomes a weak acid called carbonic acid in the aqueous solution, and the pH does not decrease due to the equilibrium theory. Therefore, it does not enter the dangerous chlorine gas generation region (pH 4.5 or less). However, it is difficult to dissolve carbon dioxide gas and maintain the dissolved state for a long period of time. Therefore, by providing a secondary micro fine bubble device (i.e., a fine bubble processing unit) after gas injection, fine bubbles are generated, which can save the amount of gas and extend the dissolution time. In other words, it is desirable to install the pH adjuster supply source before and after the fine bubble processing unit.

[0028] In the fine bubble hypochlorous acid water and / or sodium hypochlorite water manufacturing device, for example, one piping path serves to generate both the fine bubble hypochlorous acid water and the sodium hypochlorite water. The fine bubble generation treatment unit, the pH adjuster supply source, the main agent supply source, the secondary pH adjuster supply source, etc., may be arranged in any of the above-mentioned arrangements relative to the piping path.

[0029] The fine bubble hypochlorous acid water and / or sodium hypochlorite water manufacturing device has, for example, at least one piping path for generating the fine bubble hypochlorous acid water and at least one piping path for generating the sodium hypochlorite water. The fine bubble generation processing unit, the pH adjuster supply source, the main agent supply source, the secondary pH adjuster supply source, etc., for each of the piping paths can be arranged in any of the above-mentioned arrangements for each of the piping paths.

[0030] The present invention can be a fine bubble hypochlorous acid water and / or sodium hypochlorite water manufacturing device, in which the fine bubble processing unit creates bubbles having a diameter of less than 1 μm in the water or aqueous solution.

[0031] The fine bubble hypochlorous acid water and / or sodium hypochlorite water, which are ultra-fine bubbles with a diameter of less than 1 μm, can exhibit higher cleaning and disinfecting power than conventional hypochlorous acid water or sodium hypochlorite water at the same pH because the fine bubbles can penetrate into finer grooves of objects. The ultra-fine bubbles can penetrate into grooves of 1 μm or less, have a long life of several weeks to several months, and can be stored for a long period of time.

[0032] The present invention can be a fine bubble hypochlorous acid water and / or sodium hypochlorite water manufacturing device having a secondary fine bubble processing unit that creates bubbles with diameters of less than 100 μm in the fine bubble aqueous solution.

[0033] The secondary fine bubble processing unit can create bubbles with a diameter of less than 100 μm in the fine bubble aqueous solution, thereby further increasing the amount and density of fine bubbles in the fine bubble aqueous solution and further enhancing the cleaning power. The secondary fine bubble processing unit can create ultra-fine bubbles with a diameter of less than 1 μm.

[0034] The present invention can also be a fine bubble hypochlorous acid water and / or sodium hypochlorite water manufacturing apparatus, in which the pH adjuster supply source supplies carbon dioxide gas and has a secondary pH adjuster supply source that supplies a pH adjuster different from the carbon dioxide gas to the fine bubble sodium hypochlorite water.

[0035] The pH adjuster supply source supplies carbon dioxide gas, and the secondary pH adjuster supply source supplies a pH adjuster different from the carbon dioxide gas, thereby realizing more uniform and highly accurate pH adjustment. The secondary pH adjuster supply source can supply hydrochloric acid as the secondary pH adjuster. The secondary pH adjuster supply source can be provided with a pH meter, and a control unit can be provided that feedback controls the supply amount of the secondary pH adjuster based on the detected value.

[0036] The present invention provides fine bubble water, which is characterized by microbubbles less than 100 μm in diameter and / or ultrafine bubbles less than 1 μm in diameter, and which is composed of hypochlorous acid water with a pH of 4.5 or more and a pH of 7.5 or less and an effective chlorine concentration of 10 to 100 ppm, or sodium hypochlorite water with a pH of more than 7.5 and an effective chlorine concentration of 100 to 1,000 ppm.

[0037] The fine bubble water can exert a higher cleaning power and disinfecting power than conventional hypochlorous acid water due to the action of fine bubbles. The fine bubble water can be used for cleaning and disinfecting various items such as food, tableware, medical equipment, childcare products, nursing care products, etc., the skin of humans and animals, deodorization, pesticides, etc., and since it is fine bubbled, it has a higher cleaning power and disinfecting power than conventional hypochlorous acid water or sodium hypochlorite water, and can reach even finer grooves and holes to clean and disinfect.

[0038] When the pH of the fine bubble water using hypochlorous acid is between 4.5 and 7.5, and the effective chlorine concentration is outside the range of 10 to 100 ppm, the water becomes chlorine molecules or hypochlorite ions, and the disinfecting power decreases. When the diameter of the fine bubble water using hypochlorous acid is 100 μm or more, the diameter exceeds the range of microbubbles (diameter less than 1 to 100 μm) or ultrafine bubbles (diameter less than 1 μm), and the effect of enhancing the cleaning power weakens.

[0039] Furthermore, when the pH of the fine bubble water using sodium hypochlorite is less than 7.6, it approaches the pH range of slightly acidic hypochlorous acid water, and the original cleaning effect cannot be obtained. When the effective chlorine concentration of the fine bubble water using sodium hypochlorite is less than 10 ppm, the handling becomes dangerous, and when it exceeds 1000 ppm, the disinfecting power decreases. Furthermore, when the diameter of the bubbles is 100 μm or more, it exceeds the range of microbubbles (diameter less than 1 to 100 μm) and / or ultrafine bubbles (diameter less than 1 μm), and the effect of enhancing the cleaning power is weakened. Effect of the Invention

[0040] The fine bubble / hypochlorous acid water and / or sodium hypochlorite water manufacturing device of the present invention can produce fine bubble / hypochlorous acid water and / or sodium hypochlorite water that has enhanced cleaning and disinfecting power compared to conventional chlorous acid water and / or sodium hypochlorite water.

[0041] The fine bubble hypochlorous acid water of the present invention provides higher cleaning and disinfecting power than conventional hypochlorous acid water. The fine bubble sodium hypochlorite water of the present invention provides higher cleaning and disinfecting power than conventional sodium hypochlorite water. [Brief description of the drawings]

[0042] [Figure 1]FIG. 1 is a piping diagram of a production apparatus 1 for producing fine bubbles / hypochlorous acid water and / or sodium hypochlorite water, in which (A) is a piping diagram of the production apparatus 1 equipped with a fine bubble treatment unit 3, (B) is a piping diagram of the production apparatus 1 in which a fine bubble treatment unit 3 is disposed downstream of a pH adjuster supply source 4, (C) is a piping diagram of the production apparatus 1 in which fine bubble treatment units 3 are disposed in two locations, (D) is a piping diagram of the production apparatus 1 equipped with a secondary pH adjuster supply source 400, and (E) is a piping diagram of the production apparatus 1 having two piping paths 100. [Diagram 2] A perspective view showing the internal structure of the fine bubble hypochlorous acid water and / or sodium hypochlorite water production device 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0043] Hereinafter, the fine bubble hypochlorous acid water and / or sodium hypochlorite water manufacturing device according to the present embodiment will be described in detail with reference to the drawings. In particular, the present embodiment includes a water supply source 2 that supplies water 20, a fine bubble generation processing unit 3 that converts the water 20 or an aqueous solution 21 obtained by adding a pH adjuster 40 to the water 20 into fine bubble water 22 or a fine bubble aqueous solution 23, a pH adjuster supply source 4 that adds a pH adjuster 40 to the water 20 or the fine bubble water 22 to produce the aqueous solution 21 or the fine bubble aqueous solution 23, and at least one main agent supply source 5 that adds hypochlorous acid 51 or sodium hypochlorite 52 to the fine bubble aqueous solution 23.

[0044] As shown in FIG. 1(A) and FIG. 2, the fine bubble / hypochlorous acid water and / or sodium hypochlorite water production device (hereinafter referred to as the production device) 1 has a housing 10 having a control system storage compartment 11 at the top and a device main body storage compartment 12 at the bottom. A piping line 100 runs through the device main body storage compartment 12 of the fine bubble / hypochlorous acid water 6 and / or sodium hypochlorite water 7 production device 1, and a water supply source 2 is connected to the original end of the piping line 100 via an on-off valve 101 and a check valve 102 arranged downstream of the on-off valve 101. The water supply source 2 supplies water 20 that meets the water quality standards for tap water to the piping line 100. The water supply source 2 can supply water 20 such as tap water, groundwater, well water, distilled water, pure water, or purified water.

[0045] The piping 100 has a flow meter 103 downstream of the check valve 102, and a fine bubble generation unit 3, a pH adjuster supply source 4, and a base agent supply source 5 are arranged in series from the base end to the downstream end of the flow meter 103. The piping 100 connects a buffer tank 104 having a discharge valve 105 to the downstream end of the base agent supply source 5.

[0046] The on-off valve 101 opens and closes the piping 100, and adjusts the amount of the water 20 supplied to the piping 100. The control system storage compartment 11 accommodates a control unit 111, and the control unit 111 receives an operation input from the outside via an operation panel 112 attached to the exterior of the housing 10. The control unit 111 controls the opening degree of the on-off valve 101 based on the input from the operation panel 112, and can feedback-control the amount of water 20 supplied to the piping 100 based on a flow rate value output by the flow meter 103.

[0047] The control unit 111 can control each unit to produce, for example, fine bubble / hypochlorous acid water 6 according to an input from the operation panel 112. The control unit 111 can control each unit to produce, for example, fine bubble / sodium hypochlorite water 6 according to an input from the operation panel 112.

[0048] The fine bubble processing unit 3 can convert the water 20 that has passed through the flowmeter 103 of the piping 100 into fine bubble water 22 of the microbubbles and / or ultrafine bubbles.

[0049] The fine bubble processing unit 3 can be, for example, a fine bubble water generator manufactured by Fuji Keiki Co., Ltd., which generates fine bubbles with a diameter of about 50 to 500 nm from so-called dissolved air dissolved in water by a cavitation method, without sucking in air from the outside, as shown in Patent Document 3 (Patent Publication No. 7012482).The fine bubble processing unit can be, for example, a fine bubble generator manufactured by Taisei Kogyo Co., Ltd., which applies water pressure to a nozzle, generates negative pressure inside the nozzle, self-sucks air from the outside, and crushes the self-sucked air in the internal structure of the nozzle to generate fine bubbles, in addition to the cavitation method.

[0050] The fine-bubble processing unit 3 can be any of a swirling flow liquid type that breaks up bubbles with a high-speed liquid swirling flow, an ejector type or a Venturi type that breaks up bubbles with a sudden pressure change in the gas-liquid flow path, a micropore type that makes bubbles finer by passing them through fine gas dispersion holes, a static mixer type that shears bubbles with an obstacle in the gas-liquid flow path, etc. The fine-bubble processing unit 3 can generate fine bubbles by precipitating dissolved gas in liquid, such as a pressurized dissolution precipitation type that precipitates bubbles by suddenly reducing the pressure of a saturated solution under pressure, or a heated precipitation type that precipitates bubbles by suddenly heating a saturated solution at room temperature.

[0051] The fine-bubble processing unit 3 can generate fine bubbles by rapid condensation of vapor bubbles, which generates gas bubbles by rapidly cooling the vapor of a liquid-gas mixture, like a direct vapor contact condensation type that generates fine mixed gas bubbles by direct vapor contact condensation. The fine-bubble processing unit 3 can generate fine bubbles by injecting gas through a porous material with a fine and uniform pore size, such as a ceramic membrane, and dispersing it in the liquid.

[0052] The pH adjuster supply source 4 supplies the pH adjuster 40 to the fine bubble water 22 flowing down the piping 100, thereby forming a fine bubble aqueous solution 23. The pH adjuster 40 can be selected from food additives based on the Japanese Standards for Food Additives, and the pH adjuster can be, for example, carbon dioxide gas, other pH adjusters, and / or other pH adjusting liquids.

[0053] The control unit 111 is provided with a pH meter 13 downstream of the pH adjuster supply source 4 in the piping 100, and can feedback-control the supply amount of the pH adjuster 40 from the pH adjuster supply source 4 based on the detection value thereof. When the pH adjuster 40 is carbon dioxide gas 40, the pH meter 13 can be a carbon dioxide gas monitor 13. The control unit 111 and the pH meter 13 form a supply amount control unit (111, 13) of the pH adjuster supply source 4. Furthermore, the pH adjuster supply source 4 itself can be provided with the pH meter 13 and a supply amount control unit 41 that controls the supply amount of the pH adjuster 40 from the pH adjuster supply source 4 based on the detection value of the pH meter 13.

[0054] When the control unit 111 receives an input from the operation panel 112 to produce, for example, fine bubble hypochlorous acid water 6, it controls the supply amount of the pH adjuster 40 from the pH adjuster supply source 4, and adjusts the fine bubble hypochlorous acid water 6 supplied to the buffer tank 104 after passing through the main agent supply source 5 to a neutral to slightly acidic state (for example, a pH of 4.5 or more and 7.5 or less).

[0055] When the control unit 111 receives an input from the operation panel 112 to produce, for example, fine bubble sodium hypochlorite water 7, it controls the supply amount of pH adjuster 40 from the pH adjuster supply source 4, and adjusts the fine bubble sodium hypochlorite water 7 supplied to the buffer tank 104 after passing through the main agent supply source 5 to a strong alkaline value (for example, a pH value greater than 7.5 and less than 13.5).

[0056] The base agent supply source 5 supplies hypochlorous acid 51 or sodium hypochlorite 52 as a base agent to the fine bubble aqueous solution 23 flowing in the piping 100 downstream of the pH adjuster supply source 4 of the piping 100. The base agent supply source 5 can be, for example, the fine bubble aqueous solution 23 to which hypochlorous acid 51 is added, and the fine bubble hypochlorous acid water 6 is adjusted to a neutral to weakly acidic (pH 4.5 or more, 7.5 or less) in accordance with the standard (JSA-S1012:2022 Hypochlorous Acid Molecular Aqueous Solution) issued by the Japanese Standards Association (JSA).

[0057] The main agent source 5 can be made into fine bubble strongly acidic hypochlorous acid water 6 by adding sodium hypochlorite 52 to the fine bubble aqueous solution 23 so that the pH is 2.7 or less and the available chlorine concentration is 20 to 60 ppm. The main agent source 5 can be made into fine bubble weakly acidic hypochlorous acid water 6 by adding sodium hypochlorite 52 to the fine bubble aqueous solution 23 so that the pH is 2.4 to 5.0 and the available chlorine concentration is 10 to 60 ppm. The main agent source 6 can be made into fine bubble weakly acidic hypochlorous acid water 6 by adding sodium hypochlorite 52 to the fine bubble aqueous solution 23 so that the pH is 5.0 to 6.5 and the available chlorine concentration is 10 to 80 ppm.

[0058] The control unit 111 has a chlorine concentration meter 14 between the main agent supply source 5 and the buffer tank 104 of the piping 100. When the control unit 111 receives an input from the operation panel 112 to produce, for example, fine bubble hypochlorous acid water 6, it can control the effective chlorine concentration of the fine bubble hypochlorous acid water 6 to be supplied to the buffer tank 104 to, for example, 10 to 100 ppm based on the detection value of the chlorine concentration meter 14.

[0059] When the control unit 111 receives an input from the operation panel 112 to produce, for example, fine bubble sodium hypochlorite water 7, it can control the available chlorine concentration of the fine bubble sodium hypochlorite water 7 to be supplied to the buffer tank 104 to, for example, 100 to 1,000 ppm based on the detection value of the chlorine concentration meter 14.

[0060] As shown in Fig. 1(B), the manufacturing apparatus 1 may be configured such that the fine bubble processing unit 3 is not provided between the flowmeter 103 and the pH adjuster supply source 4, but is provided between the pH adjuster supply source 4 and the main agent supply source 5. The fine bubble processing unit 3 provided downstream of the pH adjuster supply source 4 converts the aqueous solution 21 just before the main agent supply source 5 supplies the main agent 50 (hypochlorous acid 51 or sodium hypochlorite 52) into a fine bubble aqueous solution 23, so that the main agent 50 joins the fine bubble aqueous solution 23 while maintaining a stirred flowing state, improving the stirring efficiency and homogenizing the aqueous solution more efficiently.

[0061] As shown in FIG. 1(C), the manufacturing apparatus 1 can be provided with another fine bubble processing unit 3 (secondary fine bubble processing unit 300) between the pH adjuster supply source 4 and the main agent supply source 5 of the piping 100. The fine bubble-hypochlorous acid water 6 and / or sodium hypochlorite water 7 produced can be made more homogenous by the synergistic stirring action of the fine bubble processing unit 3 and the secondary fine bubble processing unit 300. Since the secondary fine bubble processing unit 300 is located downstream of the fine bubble processing unit 3 and the pH adjuster supply source 4, it can convert the fine bubble aqueous solution 23, which is obtained by adding a pH adjuster 40 to the fine bubble water 22, into microbubbles with a diameter of less than 1 to 100 μm and / or ultrafine bubbles with a diameter of less than 1 μm, thereby generating bubbles with a higher density.

[0062] As shown in FIG. 1(D), the manufacturing apparatus 1 may have a secondary pH adjuster supply source 400 disposed between the main agent supply source 5 and the buffer tank 104. The secondary pH adjuster supply source 400 may supply, for example, hydrochloric acid 401 as a secondary pH adjuster 401 to the fine bubble hypochlorous acid water 6 or fine bubble sodium hypochlorite water 7 flowing through the piping 100. The control unit 111 has a pH meter 13 between the main agent supply source 5 and the secondary pH adjuster supply source 400, and also has a pH meter (secondary pH meter) 130 between the secondary pH adjuster supply source 400 and the buffer tank 104, and may feedback-control the supply amount of the hydrochloric acid 401 from the secondary pH adjuster supply source 400 based on the detection values ​​of the pH meter 13 and the secondary pH meter 130 in response to an input from the operation panel 112. The control unit 111 predicts the future supply amount of each of the on-off valve 101, pH adjuster supply source 4, secondary pH adjuster supply source 400, and main agent supply source 5, etc., by calculation based on the detection values ​​of each of the flow meter 103, pH meter 13, secondary pH meter 130, and chlorine concentration meter 14, etc., and can feedforward control each supply amount based on the predicted value.

[0063] 1(E), in the manufacturing apparatus 1, the piping 100 branches from the water supply source 2 into a plurality of parallel pipings, one of which piping 100 produces fine bubble hypochlorous acid water 6, and another piping 100 produces fine bubble sodium hypochlorite water 7. The pH adjuster supply source 4 and main agent supply source 5 arranged in each piping 100 can be integrally controlled by a single control unit 111 and operation panel 112, or each piping 100 can be provided with an individual control unit 111 and operation panel 112 for individual control.

[0064] As shown in FIG. 2, the water supply source 2, pH adjuster supply source 4, main agent supply source 5, etc. are arranged outside the housing 10, and the respective pipes, valves, cylinders, etc. are connected from the outside, thereby making it possible to reduce the size of the housing 10. [Industrial Applicability]

[0065] The fine bubble hypochlorous acid water and / or sodium hypochlorite water manufacturing device, fine bubble hypochlorous acid water and fine bubble sodium hypochlorite water of the present invention can be used in fields such as agriculture, fisheries, food, hygiene, medicine, commerce, service, and industry. [Explanation of symbols]

[0066] 1. Fine bubble, hypochlorous acid water and / or sodium hypochlorite water production equipment 10 Same case 11. Control system storage area 111 Same Control Unit 112 Same Operation Panel 12. Storage compartment for the device main body 13 pH measuring instrument 130 pH secondary measuring instrument 14. Chlorine concentration measuring device 100 Same pipe line 101 Same on-off valve 102 Same check valve 103 Same flow meter 104 Same Buffer Tank 105 Same discharge valve 2 Water source 20 Same Water 21 Same aqueous solution 22 Fine bubble water 23 Fine bubble aqueous solution 3 Fine bubble processing section 300 Secondary fine bubble processing unit 4. pH Adjustment Source 41 Supply volume control section 40 Same pH adjuster 400 Secondary pH adjuster supply source 5. Source of base material 50 Main ingredient 51 Hypochlorous Acid 52 Sodium hypochlorite 6 Fine bubble hypochlorous acid water 7 Fine bubble sodium hypochlorite water

Claims

1. a water source for supplying water; a fine bubble generation treatment unit that generates bubbles having a diameter of less than 100 μm in the water or an aqueous solution obtained by adding a pH adjuster to the water to produce fine bubble water or a fine bubble aqueous solution; a pH adjuster supply source for adding a pH adjuster to the water or the fine bubble water to form an aqueous solution or a fine bubble aqueous solution; a base agent supply source for adding hypochlorous acid and / or sodium hypochlorite to the fine bubble aqueous solution; An apparatus for producing fine bubbles, hypochlorous acid water and / or sodium hypochlorite water comprising the above-mentioned components.

2. The fine bubble / hypochlorous acid water and / or sodium hypochlorite water manufacturing device according to claim 1, wherein the pH adjuster supply source is provided with at least one supply amount control unit that adjusts the pH of the aqueous solution to a value of 4.5 or more, 7.5 or less, or more than 7.

5.

3. The fine bubble / hypochlorous acid water and / or sodium hypochlorite water manufacturing device according to claim 1, wherein the fine bubble processing unit creates bubbles having a diameter of less than 1 μm in the water or aqueous solution.

4. The fine bubble / hypochlorous acid water and / or sodium hypochlorite water producing device according to claim 3, further comprising a secondary fine bubble treatment unit that produces bubbles having a diameter of less than 100 μm in the fine bubble aqueous solution.

5. the pH adjuster source supplies carbon dioxide gas; The fine bubble hypochlorous acid water and / or sodium hypochlorite water producing apparatus according to claim 3, further comprising a secondary pH adjuster supply source that supplies a pH adjuster different from the carbon dioxide gas to the fine bubble sodium hypochlorite water.

6. Hypochlorous acid water with a pH of 4.5 or more and 7.5 or less and an effective chlorine concentration of 10 to 100 ppm; or Sodium hypochlorite water with a pH of over 7.5 and an effective chlorine concentration of 100 to 1,000 ppm The fine bubble water is characterized in that it is made up of microbubbles having a diameter of less than 100 μm and / or ultrafine bubbles having a diameter of less than 1 μm.

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