KR20240049977A - Apparatus for preparing slightly acidic hypochlorous acid water and method for preparing slightly acidic hypochlorous acid water using the same - Google Patents

Abstract

The present invention includes a raw water control unit that supplies raw water and controls the supply amount; An auxiliary fluid control unit that supplies electroauxiliary fluid containing minerals and hydrochloric acid and controls the supply amount; A non-diaphragm electrolyzer in which electrolysis of a raw water mixture containing raw water supplied from the raw water control unit and electrolyte auxiliary liquid supplied from the auxiliary liquid control unit is performed; A voltage/current control unit that controls and monitors the voltage and/or current in the non-diaphragm electrolyzer; And a main control unit that collects information including current/voltage information, raw water flow rate, pH and concentration of generated slightly acidic hypochlorous acid water, and set current value, and transmits commands to the raw water control unit, auxiliary solution control unit, and voltage/current control unit. It relates to a production device for slightly acidic hypochlorous acid water. As a result, regardless of various characteristics such as the mineral content of the raw water, high-quality slightly acidic hypochlorous acid water with a high concentration of available chlorine and always having a pH of 5.0 to 6.5 can be easily manufactured, and not only does it reduce the chlorine odor during the manufacturing process, but it also reduces the chlorine odor in the final product. It is possible to ensure that almost no residual chlorine is generated in hypochlorous acid water.

Description

Apparatus for producing slightly acidic hypochlorous acid water and method for producing slightly acidic hypochlorous acid water using the same {Apparatus for preparing slightly acidic hypochlorous acid water and method for preparing slightly acidic hypochlorous acid water using the same}

The present invention relates to an apparatus for producing slightly acidic hypochlorous acid water and a method for producing slightly acidic hypochlorous acid water using the same, and more specifically, to a device capable of producing high concentration slightly acidic hypochlorous acid water through electrolysis using a diaphragm-less electrolyzer. It relates to an apparatus for producing slightly acidic hypochlorous acid water and a method for producing slightly acidic hypochlorous acid water using the same.

Hypochlorous acid (HOCl) is a chlorine-based disinfectant that has strong sterilizing power, and hypochlorous acid water refers to an aqueous solution containing hypochlorous acid (HOCl). The properties of the hypochlorous acid water produced vary depending on the type of electrolyte and the presence or absence of an ion permeable membrane installed between the electrodes of the electrolytic cell used for electrolysis.

First, raw water containing salt water of a certain concentration is supplied to a diaphragm electrolyzer in which a diaphragm is installed between the anode and the cathode, and when direct current is applied to the anode and the cathode for electrolysis, strongly acidic hypochlorous acid (HOCl) is produced at the anode. and strong alkaline water is generated at the cathode. Second, there is a method of producing slightly acidic hypochlorous acid water in the pH range of 5.0 to 6.5 by electrolyzing raw water with a small amount (2-6%) of hydrochloric acid added in a non-diaphragm electrolyzer using direct current. When direct current is applied to dilute hydrochloric acid solution (HCl), which is a raw material solution, or diluted hydrochloric acid auxiliary solution, which is an aqueous solution adjusted to an appropriate concentration by adding sodium chloride aqueous solution to hydrochloric acid solution, in a non-diaphragm electrolyzer, chlorine ions ( Cl ^- ) is oxidized to form chlorine (Cl ₂ ), and at the cathode, hydrogen ions (H ⁺ ) are reduced to hydrogen (H ₂ ). The chlorine (Cl ₂ ) and hydrogen (H ₂ ) formed in this way react with raw water as shown in Scheme 2 to produce hypochlorous acid (HOCl), and are mixed and diluted with a large amount of raw water to produce slightly acidic hypochlorous acid water.

[Scheme 1]

(-) pole: 2H ⁺ + 2e ^- → H ₂

(+)pole: 2Cl ^- → Cl ₂ + 2e ^-

[Scheme 2]

Cl ₂ + H ₂ + H ₂ O → HOCl + HCl + H ₂

At this time, since the raw water used varies in regional characteristics, mineral content of the raw water, temperature and other characteristics, it is very difficult to produce hypochlorous acid water with a constant pH and concentration using these raw materials.

As an example of regional characteristics in Japan, compared to other regions, the water in the Hiroshima region is close to pure water containing almost no minerals, so electrolysis is rarely performed in non-diaphragm electrolyzers, making it very difficult to control pH and concentration. When using a hypochlorous acid water production device, it is almost impossible to produce slightly acidic hypochlorous acid water.

Korean Patent Publication No. 10-2021-0006325 Korean Patent Publication No. 10-2009-0081847

The purpose of the present invention is to solve the above problems, and to easily produce high-quality slightly acidic hypochlorous acid water that always maintains pH 5.0 to 6.5 and has a high concentration of available chlorine regardless of various characteristics such as the mineral content of raw water, The aim is to provide a manufacturing device for slightly acidic hypochlorous acid water that not only reduces chlorine odor during the manufacturing process, but also ensures that almost no residual chlorine is generated in the final hypochlorous acid water.

Another object of the present invention is to use the apparatus for producing slightly acidic hypochlorous acid water of the present invention, and to differentiate the composition and components of the electrolyte solution used from the conventional ones, so that the pH is always between 5.0 and 5.0 regardless of various characteristics such as the mineral content of the raw water. The purpose is to easily produce high-quality slightly acidic hypochlorous acid water that maintains 6.5 and has a high concentration of available chlorine, and to provide a method for producing hypochlorous acid water that not only reduces chlorine odor during the manufacturing process but generates almost no residual chlorine. .

According to one aspect of the invention,

A raw water control unit that supplies raw water and controls the supply amount;

An auxiliary fluid control unit that supplies electroauxiliary fluid containing minerals and hydrochloric acid and controls the supply amount;

A non-diaphragm electrolyzer in which electrolysis of a raw water mixture containing raw water supplied from the raw water control unit and electrolyte auxiliary liquid supplied from the auxiliary liquid control unit is performed;

A voltage/current control unit that controls and monitors the voltage and/or current in the non-diaphragm electrolyzer; and

A main control unit that collects information including current/voltage information, raw water flow rate, pH and concentration of generated slightly acidic hypochlorous acid water, and set current value and sends commands to the raw water control unit, auxiliary solution control unit, and voltage/current control unit. An apparatus for producing slightly acidic hypochlorous acid water is provided.

Preferably, the raw water control unit,

A raw water supply unit that supplies raw water, which is a raw material used in producing hypochlorous acid water;

A flow sensor that detects the flow rate of raw water supplied from the raw water supply unit and transmits the flow rate information to the main control unit;

A raw water pump delivering the raw water to the non-diaphragm electrolyzer;

A valve that controls supply or blocking of raw water to the raw water pump; and

It may include a valve raw water pump control unit that controls the motor of the raw water pump to adjust the supply amount of raw water supplied to the diaphragm-less electrolyzer according to the judgment based on the information collection of the main control unit.

Preferably, the auxiliary liquid control unit,

Auxiliary fluid supply unit that supplies electroauxiliary fluid containing minerals and hydrochloric acid;

An auxiliary solution pump that supplies the electrolyte auxiliary solution to the non-diaphragm electrolyzer; and

It may include an auxiliary liquid pump control unit that controls the motor of the auxiliary liquid pump according to the judgment based on the information collection of the main control unit to adjust the supply amount of electrolytic auxiliary liquid supplied to the diaphragm-less electrolyzer.

The voltage/current control unit can automatically adjust the voltage according to a preset current value during electrolysis of the raw water mixture in the diaphragm-less electrolyzer.

The current value of the voltage/current control unit may be preset in the range of 5 to 10 A.

The current value is set to a plurality of levels step by step in the range of 5 to 10 A, so that one current level can be selected according to the user's selection.

The voltage can be automatically adjusted in the range of 3.5 to 5.9 V.

The voltage/current control unit may include a Switched-Mode Power Supply (SMPS).

The main control unit may transmit a command to the raw water control unit, the auxiliary solution control unit, and the voltage/current control unit to maintain the pH of the slightly acidic hypochlorous acid water in the range of 5.0 to 6.5.

The main control unit may be connected to an operation unit that inputs the on/off of the device and the conditions for producing slightly acidic hypochlorous acid water.

The manipulation unit may include a contact manipulation unit and a non-contact sensor unit.

The control unit may be additionally installed with a display device that displays information on the on/off status of the device, the degree of electrolysis progress, and the pH and concentration of the produced slightly acidic hypochlorous acid water.

The contact operation unit may include an item for selecting a current level during electrolysis in the diaphragm-less electrolyzer.

The non-contact sensor unit can turn the device on/off non-contactly using a sensor.

According to another aspect of the present invention,

A method for producing slightly acidic hypochlorous acid water is provided, wherein the slightly acidic hypochlorous acid water is produced using the device for producing slightly acidic hypochlorous acid water.

The raw water may be any one selected from tap water, groundwater, and rainwater.

The electrolyte solution includes a first electrolyte solution containing water, dilute hydrochloric acid, and sodium chloride (NaCl); and a mixture of water and minerals, wherein the minerals include sulfur (S), iron (Fe), aluminum (Al), titanium (Ti), calcium (Ca), fluorine (F), rubidium (Rb), and vanadium (V). , a second electrolyte containing chromium (Cr), nickel (Ni), and gallium (Ga); a mixed electrolyte may be used.

Preferably, the first electrolyte is 15 to 20 parts by weight of 8% to 12% dilute hydrochloric acid, based on 100 parts by weight of water; and 15 to 20 parts by weight of sodium chloride (NaCl).

Preferably, the second electrolyte solution may include 15 to 20 parts by weight of the mineral, based on 100 parts by weight of water.

Preferably, the electrolyte may be mixed in a volume ratio of 10:8 to 8:10 of the first electrolyte and the second electrolyte.

The current value during electrolysis can be set so that the effective chlorine concentration of the slightly acidic hypochlorous acid water is 30 to 50 ppm.

The apparatus for producing slightly acidic hypochlorous acid water of the present invention easily produces high-quality slightly acidic hypochlorous acid water with a high concentration of available chlorine and always has a pH of 5.0 to 6.5 regardless of various characteristics such as the mineral content of raw water, and is used during the production process. Not only does it reduce the chlorine odor, but it also ensures that almost no residual chlorine is generated in the final hypochlorous acid water.

The method for producing hypochlorous acid water using the production device for slightly acidic hypochlorous acid water of the present invention is to differentiate the composition and components of the electrolyte solution used from the conventional method while using the production device for slightly acidic hypochlorous acid water of the present invention to differentiate the minerals of raw water. Regardless of various characteristics such as content, it is easy to manufacture high-quality slightly acidic hypochlorous acid water that always maintains pH 5.0 to 6.5 and has a high concentration of available chlorine. It not only reduces chlorine odor during the manufacturing process, but also generates almost no residual chlorine. Hypochlorous acid water can be produced.

Figure 1 is a schematic diagram of the apparatus for producing slightly acidic hypochlorous acid water of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention.

However, the following description is not intended to limit the present invention to specific embodiments, and in describing the present invention, if it is determined that a detailed description of related known technology may obscure the gist of the present invention, the detailed description will be omitted. .

The terminology used herein is only used to describe specific embodiments and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, or a combination thereof described in the specification, but are not intended to indicate the presence of one or more other features or It should be understood that this does not exclude in advance the possibility of the presence or addition of numbers, steps, operations, components, or combinations thereof.

Figure 1 is a schematic diagram of an apparatus for producing slightly acidic hypochlorous acid water of the present invention.

Hereinafter, the apparatus for producing slightly acidic hypochlorous acid water of the present invention will be described with reference to Figure 1.

Do this. When pH exceeds 6.0, the production of hypochlorite ions increases and the sterilizing power weakens.

The apparatus for producing slightly acidic hypochlorous acid water of the present invention includes a raw water control unit 100, an auxiliary liquid control unit 200, a diaphragm-less electrolyzer 300, a voltage/current control unit 400, a main control unit 500, and an operation unit 600. It is characterized by including.

The raw water control unit 100 can supply raw water and control the supply amount.

The raw water control unit 100 includes a raw water supply unit 110, a flow sensor 120, a valve 130, a raw water pump control unit 140, and a raw water pump 150.

The raw water supply unit 110 may supply raw water, which is a raw material used in producing slightly acidic hypochlorous acid water. The raw water may be groundwater, tap water, rainwater, etc., and may be used regardless of mineral content.

The flow sensor 120 may detect the flow rate of raw water supplied from the raw water supply unit 110 and transmit the sensed flow rate information to the main control unit 500. At this time, the flow rate information transmitted to the main control unit 500 may serve as a factor in ensuring that the slightly acidic hypochlorous acid water finally produced by the device is maintained in the pH range of 5.0 to 6.5.

Slightly acidic hypochlorous acid water contains 2% or less of hypochlorite ions (OCl ^- ) and 98 to 100% of hypochlorous acid (HOCl), and is characterized by not containing chlorine. If the slightly acidic hypochlorous acid water has a pH of 6.5 or higher, the production of hypochlorite ions increases, which may weaken the sterilizing power. If the pH is lower than 5.0, the acidity may be high and cause corrosion of the equipment being used.

The raw water pump 150 can deliver the raw water to the diaphragm-less electrolyzer 300.

The valve 130 controls the supply or blocking of raw water to the raw water pump 150, and can be opened and closed to supply raw water when the device is operated in the on state and to block the supply in the off state. there is.

It is desirable to use a valve that can be remotely controlled so that the valve 130 can be automatically opened and closed according to the device on/off. For example, a solenoid valve can be used.

The raw water pump control unit 140 controls the motor (M) of the raw water pump 150 according to the judgment based on the information collection of the main control unit 500 to adjust the supply amount of raw water supplied to the diaphragmless electrolyzer 300. .

The information collection of the main control unit 500 includes flow rate information of raw water detected by the flow sensor 120, pH and concentration of slightly acidic hypochlorous acid water generated in the non-diaphragm electrolyzer 300, monitoring result information of current and voltage, etc. As a result of the collection, the degree of supply of raw water can be determined and a command can be transmitted to the raw water pump control unit 140.

By adjusting the operation or speed of the motor M of the raw water pump 150 by the above command, the amount of raw water supplied to the diaphragm-less electrolyzer 300 can be adjusted, or the supply can be temporarily stopped. Accordingly, the pH value of the finally produced slightly acidic hypochlorous acid water can be maintained constant regardless of the mineral concentration of the raw water.

The auxiliary fluid control unit 200 can supply electroauxiliary fluid containing minerals and hydrochloric acid and control the supply amount.

The auxiliary liquid control unit 200 may include an auxiliary liquid supply unit 210, an auxiliary liquid pump control unit 220, and an auxiliary liquid pump 230.

The auxiliary fluid supply unit 210 may supply electroauxiliary fluid containing minerals and hydrochloric acid.

The auxiliary liquid pump 230 can deliver the electrolytic auxiliary liquid to the non-diaphragm electrolyzer 300.

The auxiliary solution pump control unit 220 controls the motor (M) of the auxiliary solution pump 230 according to the judgment based on the information collection of the main control unit 500 to adjust the supply amount of electrolyte solution supplied to the diaphragm-less electrolyzer 300. .

The information collection of the main control unit 500 includes flow rate information of raw water detected by the flow sensor 120, pH and concentration of slightly acidic hypochlorous acid water generated in the non-diaphragm electrolyzer 300, monitoring result information of current and voltage, etc. As a result of collecting the , the degree of supply of the auxiliary liquid can be determined and a command can be issued to the auxiliary liquid pump control unit 220.

By adjusting the operation or speed of the motor M of the auxiliary fluid pump 230 by the above command, the amount of electrolytic auxiliary fluid supplied to the diaphragm-less electrolyzer 300 can be adjusted, or the supply can be temporarily stopped. Accordingly, the pH value of the finally produced slightly acidic hypochlorous acid water can be maintained constant regardless of the mineral concentration of the raw water.

In the non-diaphragm electrolyzer 300, electrolysis of a raw water mixture containing raw water supplied from the raw water control unit 100 and electrolyte auxiliary liquid supplied from the auxiliary liquid control unit 200 can be performed.

The voltage/current control unit 400 may control and monitor the voltage and/or current within the diaphragm-less electrolyzer 300.

The current value of the voltage/current control unit 400 is preferably set in advance in the range of 5 to 10 A. At this time, the current value is related to the concentration of the finally produced slightly acidic hypochlorous acid water, and generally, in order to obtain a high concentration, the current value can be set to a relatively high level within the above range.

In the manufacturing device of the present invention, the current value can be set to a plurality of levels step by step in the range of 5 to 10 A, so that one current level can be selected according to the user's selection. For example, levels 1, 2, 3, 4, and 5 are assigned, so level 1 is 7 A, level 2 is 7.8 A, level 3 is 8.6 A, level 4 is 9.4 A, level 5 is 10 A, and so on. can be set. Of course, the number of level steps and the amperage of the corresponding level can be arbitrarily set as needed when manufacturing the device.

The voltage can be automatically adjusted in the range of 3.5 to 5.9 V.

The voltage is automatically adjusted to the optimal voltage in the voltage range so that the fixed current value set during electrolysis in the non-diaphragm electrolyzer 300 is maintained and electrolysis can be performed smoothly.

Typically, when raw water with a low mineral content close to pure water is used, the voltage can be adjusted to exceed 5 V, and when water with a high mineral content that is easily electrolyzed is used as raw water, the voltage can be adjusted to 5 V. It can be automatically adjusted below V.

The voltage/current control unit 400 preferably includes a Switched-Mode Power Supply (SMPS). SMPS refers to an electronic power supply that includes a switching regulator that converts power efficiently. Similar to other power supplies, SMPS can receive power from a power source and change the current or voltage characteristics to deliver it to a device.

The main control unit 500 collects information including current/voltage information, raw water flow rate, pH and concentration of the generated slightly acidic hypochlorous acid water, and a set current value, and operates the raw water control unit 100, the auxiliary liquid control unit 200, and the voltage/voltage control unit 500. A command can be transmitted to the current control unit 400.

The main control unit 500 may transmit a command to the raw water control unit 100, the auxiliary solution control unit 200, and the voltage/current control unit 400 to maintain the pH of the slightly acidic hypochlorous acid water in the range of 5.0 to 6.5.

The main control unit 500 is preferably connected to an operation unit 600 that inputs the on/off device and the slightly acidic hypochlorous acid production conditions.

The manipulation unit 600 preferably includes a contact manipulation unit 610 and a non-contact sensor unit 620.

The contact control unit 610 may include an item for selecting a current level during electrolysis in the diaphragm-less electrolyzer 300. Depending on the nature of the slightly acidic hypochlorous acid water to be prepared, the current level can be directly input through the contact control unit 610. Since the current level is the same as described above, specific details follow the above.

The operating unit 600 may be additionally installed with a display device that displays information on the on/off state of the device, the degree of electrolysis progress, and the pH and concentration of the produced slightly acidic hypochlorous acid water. At this time, various types of display devices such as LCD, LED, and OLED can be applied.

The non-contact sensor unit 620 can turn the device on/off without contact using a sensor. Accordingly, it can be turned on/off without direct contact, making it useful for preventing infectious diseases such as coronavirus.

Hereinafter, a method for producing slightly acidic hypochlorous acid water using the apparatus for producing slightly acidic hypochlorous acid water of the present invention will be described.

The raw water can be tap water, groundwater, rainwater, etc., and all can be used regardless of mineral content. This is because the apparatus for producing slightly acidic hypochlorous acid water of the present invention can produce high-quality slightly acidic hypochlorous acid water with a pH in the range of 5.0 to 6.5 and free of residual chlorine, regardless of the mineral content of the raw water.

In the present invention, the electrolyte auxiliary fluid mixed with raw water and used for electrolysis is characterized in that it includes a first electrolyte auxiliary fluid and a second electrolyte auxiliary fluid.

The first electrolyte solution includes water, dilute hydrochloric acid, and sodium chloride (NaCl).

In addition, the second electrolyte solution is a mixture of water and minerals, and the minerals include sulfur (S), iron (Fe), aluminum (Al), titanium (Ti), calcium (Ca), fluorine (F), and rubidium ( Rb), vanadium (V), chromium (Cr), nickel (Ni), and gallium (Ga).

The content of the mineral is 12 to 18 parts by weight of iron (Fe), based on 100 parts by weight of sulfur (S); 7 to 10 parts by weight of aluminum (Al); 0.3 to 1 part by weight of titanium (Ti); 0.2 to 0.7 parts by weight of calcium (Ca); 0.1 to 0.5 parts by weight of fluorine (F); 0.1 to 0.5 parts by weight of silicon (Si); 0.01 to 0.1 parts by weight of vanadium (V); 0.01 to 0.1 parts by weight of chromium (Cr); 0.005 to 0.02 parts by weight of nickel (Ni); and 0.002 to 0.01 parts by weight of gallium (Ga).

The first electrolyte solution contains 15 to 20 parts by weight of 8% to 12% dilute hydrochloric acid, based on 100 parts by weight of water; and 15 to 20 parts by weight of sodium chloride (NaCl).

In addition, the second electrolyte solution preferably contains 15 to 20 parts by weight of the mineral, based on 100 parts by weight of water.

The electrolyte may be preferably mixed in a volume ratio of 10:8 to 8:10, more preferably 10:9 to 9:10. , even more preferably, it may be mixed in a volume ratio of 10:9.5 to 9.5:10, and most preferably in a 1:1 volume ratio.

It is desirable to set the current level during electrolysis so that the effective chlorine concentration of the slightly acidic hypochlorous acid water is 30 to 50 ppm.

[Manufacturing example]

Preparation Example 1: Mixed electrolyte solution of first electrolyte solution + second electrolyte solution

The first electrolyte was prepared by mixing 44.5 g of sodium chloride and 50 g of 10% dilute hydrochloric acid in 500 ml of distilled water.

The second electrolyte was prepared by mixing 100 g of minerals in 500 ml of distilled water, and the minerals included 15 parts by weight of iron (Fe) based on 100 parts by weight of sulfur (S); 8 parts by weight of aluminum (Al); 0.5 parts by weight of titanium (Ti); Calcium (Ca) 0.4 parts by weight; 0.2 parts by weight of fluorine (F); 0.3 parts by weight of silicon (Si); Vanadium (V) 0.05 parts by weight; 0.05 parts by weight of chromium (Cr); Nickel (Ni) 0.01 parts by weight; and 0.01 parts by weight of gallium (Ga).

The first and second electrolyte solutions prepared in this way were mixed in a 1:1 volume ratio.

Comparative Preparation Example 1: Conventional electrolyte solution

It was prepared by mixing 100 g of sodium chloride and 100 g of 10% diluted hydrochloric acid with 500 ml of distilled water in Preparation Example 1.

[Experimental example]

Experimental Example 1: Measurement of residual chlorine amount according to electrolyte fluid components

In order to compare the quality of slightly acidic hypochlorous acid water according to the components of the electrolyte, the electrolyte of Preparation Example 1 and the conventional electrolyte of Comparative Example 1 were used, respectively, and the production device of slightly acidic hypochlorous acid water of the present invention described above was used. Thus, slightly acidic hypochlorous acid water was prepared. The current level was adjusted from 1 to 5, respectively. Here, each current level means 1:5A, 2:6.5A, 3:8A, 4:9A, 5:10A.

The results of measuring the pH and effective chlorine concentration (ppm) of the slightly acidic hypochlorous acid water prepared accordingly are shown below. Table 1 shows the results when using the electrolyte solution of Preparation Example 1 of the present invention.

Use of electrolyte solution of Preparation Example 1 Current level Generated slightly acidic hypochlorous acid water pH Effective chlorine concentration (ppm) Experiment 1 One 6.45 38 2 6.1 40 3 5.47 52 4 5.35 57 5 5.48 62 Experiment 2 One 6.09 39 2 6.1 42 3 5.65 53 4 5.65 56 5 5.46 61 Experiment 3 One 6.33 41ppm 2 6.19 51ppm 3 6.13 54ppm 4 5.35 60ppm 5 5.48 63ppm Experiment 4 One 6.21 41ppm 2 6.04 49 ppm 3 5.61 50ppm 4 5.87 61ppm 5 5.48 62ppm

Table 2 below shows the results when the electrolyte solution of Comparative Preparation Example 1 was used.

Use of electrolyte solution of Comparative Preparation Example 1 Current level Generated slightly acidic hypochlorous acid water pH Effective chlorine concentration (ppm) Experiment 1 One 6.12 32ppm 2 6.04 47ppm 3 5.68 55ppm 4 5.58 64ppm 5 5.91 64ppm Experiment 2 One 6.06 34ppm 2 6.19 45ppm 3 5.89 57ppm 4 5.82 65 ppm 5 5.86 66ppm Experiment 3 One 6.12 48ppm 2 6.11 54ppm 3 6.01 57ppm 4 5.61 62ppm 5 5.79 63ppm Experiment 4 One 6.37 47ppm 2 6.33 53ppm 3 6.05 55ppm 4 5.73 61ppm 5 5.45 62ppm

According to this, it can be confirmed that when the electrolyte auxiliary solution of Preparation Example 1 of the present invention was used, the residual chlorine value of the finally produced slightly acidic hypochlorous acid water was lower than when the conventional electrolyte auxiliary solution of Comparative Preparation Example 1 was used under the same conditions. .

In addition, since the electrolyte solution of Preparation Example 1 has a significantly lower content of chlorine component than the conventional electrolyte solution of Comparative Preparation Example 1, the amount of chlorine (Cl ₂ ) generated during the electrolysis process is small, resulting in the generation of chlorine gas odor during the process. It was also confirmed that there was a significant reduction effect.

Experimental Example 2: Measurement of maintaining appropriate pH according to mineral content

A sample using a mixed electrolyte solution of the first and second electrolyte solutions according to Preparation Example 1 of the present invention using high mineral content raw water whose mineral content was adjusted to 200 ppm in hardness at a volume ratio of 1:1. Using the sample using the electrolyte solution of Comparative Example 1, hypochlorous acid water was prepared using the slightly acidic hypochlorous acid water production device of the present invention, and then the pH was measured, and the results are shown in Table 3.

division Current level Generated slightly acidic hypochlorous acid water
pH Electrolyte solution of Preparation Example 1 One 6.10 2 6.20 3 5.98 4 5.70 5 6.04 Electroauxiliary solution of Comparative Preparation Example 1 One 6.08 2 6.10 3 5.75 4 5.92 5 5.82

According to this, when hypochlorous acid water was produced using high mineral raw water, slightly acidic hypochlorous acid in the pH range of 5.0 to 6.5 was almost similar when using the electrolyte solution of Preparation Example 1 and when the electrolyte solution of Comparative Preparation Example 1 was used. It can be confirmed that the water was manufactured. Meanwhile, using low mineral content raw water whose mineral content was adjusted to a hardness of 50ppm, a mixed electrolyte solution of the first electrolyte solution and the second electrolyte solution according to Preparation Example 1 of the present invention was mixed at a ratio of 1:1. Hypochlorous acid water was prepared using the slightly acidic hypochlorous acid water production device of the present invention using the sample using the electrolyte auxiliary solution and the sample using the electrolyte auxiliary solution of Comparative Example 1 by mixing in a volume ratio, and then the pH was measured, and the results are shown in Table 4. indicated.

division Current level Generated hypochlorous acid water
pH Electrolyte solution of Preparation Example 1 One 6.03 2 6.15 3 5.92 4 5.74 5 5.18 Electroauxiliary solution of Comparative Preparation Example 1 One 6.92 2 6.95 3 6.72 4 6.92 5 6.98

According to this, when hypochlorous acid water was produced using low mineral content raw water, when the electrolyte solution of Preparation Example 1 of the present invention was used, slightly acidic hypochlorous acid water with a pH in the range of 5.0 to 6.5 was produced, but in Comparative Preparation Example 1 When an electrolyte solution was used, the produced hypochlorous acid water did not meet the pH range of 5.0 to 6.5. That is, the electrolyte solution of Preparation Example 1 of the present invention had a pH range of 5.0 to 6.5 regardless of whether the mineral content of the raw water was high or low. It was confirmed that slightly acidic hypochlorous acid water could be successfully produced.

Although the embodiments of the present invention have been described above, those skilled in the art can add, change, delete or add components without departing from the spirit of the present invention as set forth in the patent claims. The present invention may be modified and changed in various ways, and this will also be included within the scope of rights of the present invention.

Raw water control unit (100)
Raw water supply department (110)
Flow sensor (120)
valve(130)
Raw water pump control unit (140)
Raw water pump (150)
Auxiliary fluid control unit (200)
Auxiliary fluid supply unit (210)
Auxiliary fluid pump control unit (220)
Auxiliary fluid pump (230)
Diaphragmless electrolyzer (300)
Voltage/current control unit (400)
Main control unit (500)
Control panel (600)
Contact operation unit 610
Non-contact sensor unit (620)
Motor (M)

Claims (21)

A raw water control unit that supplies raw water and controls the supply amount;
An auxiliary fluid control unit that supplies electroauxiliary fluid containing minerals and hydrochloric acid and controls the supply amount;
A non-diaphragm electrolyzer in which electrolysis of a raw water mixture containing raw water supplied from the raw water control unit and electrolyte auxiliary liquid supplied from the auxiliary liquid control unit is performed;
A voltage/current control unit that controls and monitors the voltage and/or current in the non-diaphragm electrolyzer; and
A main control unit that collects information including current/voltage information, raw water flow rate, pH and concentration of generated slightly acidic hypochlorous acid water, and set current value and sends commands to the raw water control unit, auxiliary solution control unit, and voltage/current control unit. A device for producing slightly acidic hypochlorous acid water. According to paragraph 1,
The raw water control unit,
A raw water supply unit that supplies raw water, which is a raw material used in producing hypochlorous acid water;
A flow sensor that detects the flow rate of raw water supplied from the raw water supply unit and transmits the flow rate information to the main control unit;
A raw water pump delivering the raw water to the non-diaphragm electrolyzer;
A valve that controls supply or blocking of raw water to the raw water pump; and
A valve raw water pump control unit that controls the motor of the raw water pump to adjust the supply amount of raw water supplied to the non-diaphragm electrolyzer according to the judgment based on the information collection of the main control unit. Manufacturing equipment. According to paragraph 1,
The auxiliary liquid control unit,
Auxiliary fluid supply unit that supplies electroauxiliary fluid containing minerals and hydrochloric acid;
An auxiliary solution pump that supplies the electrolyte auxiliary solution to the non-diaphragm electrolyzer; and
An auxiliary liquid pump control unit that controls the motor of the auxiliary liquid pump according to the judgment based on the information collection of the main control unit to adjust the supply amount of the electrolytic auxiliary liquid supplied to the non-diaphragm electrolyzer. Manufacturing equipment. According to paragraph 1,
The voltage/current control unit is a device for producing slightly acidic hypochlorous acid water, characterized in that it automatically adjusts the voltage according to a preset current value during electrolysis of the raw water mixture in the non-diaphragm electrolyzer. According to paragraph 4,
A device for producing slightly acidic hypochlorous acid water, characterized in that the current value of the voltage / current control unit is preset in the range of 5 to 10 A. According to clause 5,
The current value is set to a plurality of levels step by step in the range of 5 to 10 A, and one current level is selected according to the user's selection. According to paragraph 1,
A device for producing slightly acidic hypochlorous acid water, characterized in that the voltage is automatically adjusted in the range of 3.5 to 5.9 V. According to paragraph 1,
The voltage/current control unit is a device for producing slightly acidic hypochlorous acid water, characterized in that it includes a Switched-Mode Power Supply (SMPS). According to paragraph 1,
The main control unit transmits a command to the raw water control unit, the auxiliary solution control unit, and the voltage/current control unit to maintain the pH of the slightly acidic hypochlorous acid water in the range of 5.0 to 6.5. According to paragraph 1,
The main control unit is connected to a control unit that turns on/off the device and inputs the conditions for producing slightly acidic hypochlorous acid water. According to clause 10,
An apparatus for producing slightly acidic hypochlorous acid water, wherein the operating unit includes a contact operating unit and a non-contact sensor unit. According to clause 10,
The control unit is additionally installed with a display device that displays information on the on/off status of the device, the degree of electrolysis progress, and the pH and concentration of the produced slightly acidic hypochlorous acid water. Manufacturing equipment. According to clause 11,
The contact operation unit is a device for producing slightly acidic hypochlorous acid water, characterized in that it includes an item for selecting a current level during electrolysis in the non-diaphragm electrolyzer. According to clause 11,
The non-contact sensor unit is a device for producing slightly acidic hypochlorous acid water, characterized in that the device is turned on/off non-contactly by a sensor. A method for producing slightly acidic hypochlorous acid water, wherein the slightly acidic hypochlorous acid water is produced using the device for producing slightly acidic hypochlorous acid water according to any one of claims 1 to 14. According to clause 15,
A method for producing slightly acidic hypochlorous acid water, characterized in that the raw water is any one selected from tap water, groundwater, and rainwater. According to clause 15,
The electrolyte solution includes a first electrolyte solution containing water, dilute hydrochloric acid, and sodium chloride (NaCl); and
It is a mixture of water and minerals, and the minerals include sulfur (S), iron (Fe), aluminum (Al), titanium (Ti), calcium (Ca), fluorine (F), rubidium (Rb), vanadium (V), A method for producing slightly acidic hypochlorous acid water, characterized in that using a mixed electrolyte solution; a second electrolyte solution containing chromium (Cr), nickel (Ni), and gallium (Ga). According to clause 17,
The first electrolyte solution is based on 100 parts by weight of water,
15 to 20 parts by weight of 8% to 12% dilute hydrochloric acid; and
A method for producing slightly acidic hypochlorous acid water, comprising 15 to 20 parts by weight of sodium chloride (NaCl). According to clause 17,
The second electrolyte is based on 100 parts by weight of water,
A method for producing slightly acidic hypochlorous acid water, comprising 15 to 20 parts by weight of the mineral. According to clause 17,
A method of producing slightly acidic hypochlorous acid water, characterized in that the electrolyte is mixed in a volume ratio of 10:8 to 8:10. According to clause 17,
A method for producing slightly acidic hypochlorous acid water, characterized in that setting the current value during electrolysis so that the effective chlorine concentration of the slightly acidic hypochlorous acid water is 30 to 50 ppm.