JP2023089991A - Hypocrite water supply apparatus and space sterilization system using the same - Google Patents

Abstract

To provide a hypochlorite water supply apparatus capable of generating hypochlorite water with reduced residual components generated by electrolysis of salt water.SOLUTION: A hypochlorite water supply apparatus 1 includes: a hypochlorite water generation unit 2 which continuously electrolytically generates hypochlorite water by energizing between a pair of first negative and positive electrodes (between a first positive electrode 4 and a first negative electrode 5) from salt water supplied into a meandering non-diaphragm electrolytic flow channel (a first inter-diaphragmatic cathode flow channel 12); and a hypochlorite water treatment unit 3 which continuously treats hypochlorite water supplied from the hypochlorite water generation unit 2 into each of meandering diaphragmatic electrolytic flow channels (a second positive electrode side channel 25 and a second negative electrode side channel 26) by energizing between a pair of second negative and positive electrodes (between a second positive electrode 14 and a second negative electrode 15). Hypochlorous acid water delivered from the electrolytic flow path (the second positive electrode side channel 25) at the positive electrode side of the hypochlorite water treatment unit 3 is supplied to the outside.SELECTED DRAWING: Figure 1

Description

The present invention provides a hypochlorous acid water supply device that supplies hypochlorous acid water with reduced NaClO and NaOH, which are residual components of hypochlorous acid water generated by electrolysis of salt water, and space sterilization using the same. It is about the system.

Conventionally, by electrolyzing salt water, hypochlorous acid water containing NaClO as a main component and containing HClO and NaOH is produced. Hypochlorous acid water is known to improve its sterilization power by making it weakly acidic, and a technology is known to control the pH generated using a diaphragm with ion permeability to the weakly acidic side. It is (For example, see Patent Document 1)

JP-A-8-164392

However, it cannot be said that NaClO and NaOH, which are residual components, are sufficiently suppressed only by adjusting the pH to be weakly acidic. NaClO and NaOH are components that remain as solids on the surface of the hypochlorous acid water after volatilization, and these residual components deliquesce and re-dissolve in water, thereby promoting metal corrosion. Therefore, when hypochlorous acid water containing a large amount of NaClO and NaOH components is mist-sprayed, fine residual components are accumulated, which may cause corrosion during long-term use.

Therefore, the present invention solves the above-mentioned conventional problems, and provides a hypochlorous acid water supply apparatus capable of supplying hypochlorous acid water with reduced residual components generated by electrolysis of salt water. With the goal.

In order to achieve this object, hypochlorous acid water is continuously electrolyzed by energizing between a pair of first negative and positive electrodes from salt water supplied in a meandering membrane-free electrolysis flow path. Hypochlorous acid water supplied from the hypochlorous acid water generation unit to each of the generation unit and the meandering membrane electrolysis flow path is continuously treated by energization between the pair of second cathode and cathode electrodes. and a hypochlorous acid water treatment unit, and the structure is such that the hypochlorous acid water sent out from the electrolysis channel on the positive electrode side of the hypochlorous acid water treatment unit is supplied to the outside.

ADVANTAGE OF THE INVENTION According to this invention, the hypochlorous acid water supply apparatus which can supply the hypochlorous acid water which reduced the residual component which arises by electrolysis of salt water can be provided.

FIG. 1 is a cross-sectional image diagram of a hypochlorous acid water supply apparatus according to Embodiment 1 of the present invention. FIG. 2 is a schematic diagram of a hypochlorous acid water generation unit. FIG. 3 is an exploded perspective view of the hypochlorous acid water generating unit. FIG. 4 is a vertical cross-sectional image diagram of the hypochlorous acid water generating unit. FIG. 5 is a horizontal cross-sectional image diagram of the hypochlorous acid water generating unit. FIG. 6 is a schematic diagram of a hypochlorous acid water treatment unit. FIG. 7 is an exploded perspective view of a hypochlorous acid water treatment unit. FIG. 8 is a vertical cross-sectional image diagram of the hypochlorous acid water treatment unit. FIG. 9 is a horizontal cross-sectional image diagram of the hypochlorous acid water treatment unit. FIG. 10 is a diagram showing the relationship between the characteristics of the hypochlorous acid water flowing through the hypochlorous acid water supply device and the electrodialysis time. FIG. 11 is a schematic diagram of a space sterilization system using a hypochlorous acid water supply device according to Embodiment 2 of the present invention.

The hypochlorous acid water supply device according to the present invention continuously electrolytically generates hypochlorous acid water by energizing between a pair of first cathode and cathode electrodes from salt water supplied in a meandering membrane-free electrolytic flow path. and the hypochlorous acid water supplied from the hypochlorous acid water generation unit to each of the meandering diaphragm electrolysis flow paths between the pair of second negative and positive electrodes. a hypochlorous acid water treatment unit that continuously treats by energization, and a structure that supplies the hypochlorous acid water to the outside, which is delivered from the electrolysis channel on the positive electrode side of the hypochlorous acid water treatment unit. do.

According to this configuration, in the hypochlorous acid water generation unit, salt water is electrolyzed in the non-diaphragm electrolysis channel to generate hypochlorous acid water, and in the hypochlorous acid water treatment unit, the diaphragm electrolysis channel is provided. The hypochlorous acid water generated in the non-diaphragm electrolysis flow path is circulated inside, and the cations that cause residual components can be separated and reduced from the positive electrode side, and can be extracted as hypochlorous acid water. For this reason, it is possible to provide a one-pass type hypochlorous acid water supply device capable of externally supplying hypochlorous acid water from which residual components generated by electrolysis of salt water are separated.

In addition, in the hypochlorous acid water supply apparatus according to the present invention, the non-diaphragm electrolysis flow channel includes a planar first positive electrode, a planar first negative electrode facing the first positive electrode, and a first positive electrode. and a spacer member provided between the electrode and the first negative electrode. By exposing it, it is configured in a meandering shape. By doing so, the ability to electrolyze salt water can be changed according to the channel shape formed in the spacer member, so that the area and time for electrolyzing salt water can be freely designed.

In addition, in the hypochlorous acid water supply apparatus according to the present invention, the diaphragm-equipped electrolysis flow path includes a meandering first flow path in which the second positive electrode is exposed and extended along the flow path, and the first flow path and a meandering second flow path in which the second cathode extends along the flow path, and the first flow path and the second flow path are separated from each other, and a diaphragm permeable to cations contained in the solution flowing through the channel. The hypochlorous acid water supplied from the hypochlorous acid water generation unit is supplied to the first flow path and the second flow path in a serpentine shape by exposing the second cathode to the second flow path by the spacer member. are configured to flow in the same direction. According to such a configuration, the hypochlorous acid water generated by electrolyzing the salt water is circulated while applying a voltage in the same direction across the diaphragm, so that the hypochlorous acid water causes residual components. Ions can be separated and reduced. Therefore, it is possible to provide a hypochlorous acid water treatment unit capable of producing hypochlorous acid water in which residual components generated by electrolysis of salt water are reduced.

Further, the hypochlorous acid water supply device according to the present invention is provided with a planar second positive electrode, a planar diaphragm facing the second positive electrode, and between the second positive electrode and the diaphragm, a first spacer member exposing the second positive electrode and the diaphragm within the first flow channel along the flow channel, the first flow channel exposing the second positive electrode and the diaphragm and the first spacer along the flow channel; It is composed of members. Further, a planar second cathode, a planar diaphragm facing the second cathode, and a second electrode provided between the second cathode and the diaphragm to extend along the flow path into the second flow path. It has a second spacer member that exposes the cathode and the diaphragm, and the second flow path is composed of the second cathode and the diaphragm that are exposed along the flow path, and the second spacer member. By doing so, residual components can be removed from the hypochlorous acid water generated by electrolyzing salt water by the channel shape formed in the first spacer member and the channel shape formed in the second spacer member. Since the ability to separate cations that cause residual components can be changed, the area and time for separating cations that cause residual components from hypochlorous acid water can be freely designed.

Further, the hypochlorous acid water supply device according to the present invention is provided in a flow path that communicates and connects the hypochlorous acid water generation unit and the hypochlorous acid water treatment unit, and the hypochlorous acid water supply device is provided in the diaphragm electrolysis flow path. A supply pump for supplying hypochlorous acid water from the acid water generation unit is provided, and the supply pump supplies hypochlorous acid water from the hypochlorous acid water generation unit to the first flow path and the second flow path at a constant flow rate. preferably supplied. As a result, the time during which the voltage is applied in the first channel can be made constant, and the time during which the voltage is applied in the second channel can be made constant. For this reason, the concentration at which the cations that cause residual components in the hypochlorous acid water in the first flow channel are separated and diluted, and the cations that cause residual components in the hypochlorous acid water in the second flow channel concentration can be stabilized.

The space sterilization system according to the present invention is connected to the above-described hypochlorous acid water supply device and the first flow path, and uses the hypochlorous acid water sent from the first flow path to create a hypochlorous acid water mist. and a sterilization device that releases to a predetermined space. According to such a configuration, even if the mist of hypochlorous acid water delivered from the first flow path is discharged into the predetermined space, residual components remaining in the predetermined space are suppressed. In other words, since the hypochlorous acid water sent from the first flow path is hypochlorous acid water with reduced residual components generated by the electrolysis of salt water, sterilization performance is maintained when sterilizing a predetermined space. However, the occurrence of metal corrosion due to residual components can be suppressed.

Further, in the spatial disinfection system according to the present invention, a predetermined space is provided with a drain pipe for discharging water generated in the predetermined space, and the second flow path is connected to the drain pipe, The structure is such that the hypochlorous acid water sent out from the second channel can be introduced into the drain pipe. By doing so, hypochlorous acid water with high detergency containing an alkaline solution in which cations that cause residual components are concentrated is removed from the hypochlorous acid water sent from the second flow path. Since the alkaline solution is circulated, the drain pipe can be washed with the alkaline solution.

(Embodiment 1)
A hypochlorous acid water supply apparatus 1 according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional image diagram of a hypochlorous acid water supply device 1 according to Embodiment 1 of the present invention.

The hypochlorous acid water supply device 1 supplies salt water (aqueous sodium chloride solution), generates hypochlorous acid water by electrolysis, and further contains residual components (Na ⁺ ions, etc.) contained in the generated hypochlorous acid water. A component having a cation of (for example, NaClO, NaOH) can be separated and reduced from the hypochlorous acid water flowing inside and can be taken out and supplied in a single pass.

Specifically, as shown in FIG. 1, the hypochlorous acid water supply device 1 includes a hypochlorous acid water generation unit 2 that electrolyzes salt water to generate hypochlorous acid water in one pass, The hypochlorous acid water treatment unit 3 that separates and reduces the residual components contained in the chlorous acid water in a single pass, and the hypochlorous acid water generation unit 2 flow the salt water through the flow path. An anode-side supply pump 29 and a cathode-side supply pump 31 for circulating hypochlorous acid water in the flow path of the processing unit 3 are provided.

<Hypochlorous acid water generation unit>
The hypochlorous acid water generating unit 2 constituting the hypochlorous acid water supply device 1 will be described with reference to FIGS. 1 to 5. FIG. FIG. 2 is a schematic diagram of the hypochlorous acid water generating unit 2. As shown in FIG. FIG. 3 is an exploded perspective view of the hypochlorous acid water generating unit 2. FIG. FIG. 4 is a vertical cross-sectional image diagram of the hypochlorous acid water generating unit 2 . FIG. 5 is a horizontal cross-sectional image diagram of the hypochlorous acid water generating unit 2 .

As shown in FIGS. 2 to 5, the hypochlorous acid water generating unit 2 includes a first positive electrode 4, a first negative electrode 5, a first negative-positive electrode spacer 6, and a first positive electrode packing 7a. , a first negative electrode packing 7b, a first positive electrode side tank housing side surface 8a, a first negative electrode side tank housing side surface 8b, a first negative electrode solution supply port 9, and a first positive electrode solution. It has an extraction port 10 , a first cathode solution extraction port 11 , a first channel between negative and positive electrodes 12 , and an electrolysis power supply 13 .

The first positive electrode 4 is a planar electrode plate. The surface of the electrode plate of the first positive electrode 4 is exposed along the channel 12 between the first positive and negative electrodes by the spacer 6 between the negative and positive electrodes. The first positive electrode 4 is an electrode that functions as an anode when current is passed by the electrolysis power source 13 . The first positive electrode 4 is arranged substantially parallel to and facing the first negative electrode 5 . The first positive electrode 4 has a platinum-containing catalyst formed on the surface of a titanium base material, and is made of a material that is highly efficient in generating hypochlorous acid by electrolysis. A platinum-containing catalyst is formed at least on the surface of the first positive electrode 4 exposed along the channel 12 between the first negative and positive electrodes. NaCl in salt water can be electrolyzed to produce hypochlorous acid water containing NaClO and HClO and NaOH.

The first cathode 5 is a planar electrode plate. The surface of the electrode plate of the first negative electrode 5 is exposed along the channel 12 between the first negative and positive electrodes by the spacer 6 between the first positive and negative electrodes. The first cathode electrode 5 is an electrode that functions as a cathode when current is passed by the electrolysis power source 13 . The first negative electrode 5 is arranged substantially parallel to and facing the first positive electrode 4 . The first negative electrode 5 forms a platinum-containing catalyst on its surface, similar to the first positive electrode 4 . A platinum-containing catalyst is formed at least on the surface of the first negative electrode 5 exposed along the first channel 12 between the negative and positive electrodes. In addition, the first positive electrode 4 and the first negative electrode 5 in the region exposed along the channel 12 between the first negative and positive electrodes and subjected to electrolysis have the same shape, and the shorter the facing distance, the easier it is for the ions to move. It is also susceptible to electrolysis. If the facing distance is short, the flow rate in the flow path will decrease, and the amount of hypochlorous acid water that can be generated will also decrease. is desirable.

The first positive electrode 4 and the first negative electrode 5 form a first negative electrode as a pair of opposing electrodes.

The first cathode-positive electrode spacer 6 is an insulating member. The spacer 6 between the first negative and positive electrodes controls the distance between the first positive electrode 4 and the first negative electrode 5 to a predetermined distance. The first spacer between negative and positive electrodes 6 has a first channel hole 12a between negative and positive electrodes that forms a first channel between negative and positive electrodes 12 described later. The first cathode-positive electrode passage hole 12a is formed through the front and back surfaces of the first cathode-positive electrode spacer 6, and is formed in a meandering manner so as to reciprocate in the horizontal direction and go up one step at a time. ing. In addition, on the surface of the first spacer between negative and positive electrodes 6, a meandering packing member (Fig. not shown) is installed. The first cathode-positive electrode spacer 6 corresponds to the "spacer member" in the claims.

The first positive electrode packing 7a has a shape in which the outer periphery of the first positive electrode 4 is hollowed out to the size of the electrode, and is in close contact with the first negative electrode spacer 6 to extend in the outer peripheral direction. It is attached with tightening pressure so that the solution in 12 (the first positive and negative electrode supply solution 9a to be described later) does not leak. As a member of the first positive electrode packing 7a, insulating silicon rubber can be used. The first positive electrode packing 7a is thicker than the first positive electrode 4, and is crushed by being pressed by the tightening pressure so that the first positive electrode spacer 6 and the first positive electrode side tank housing side surface 8a are crushed. It is desirable that the thickness of the first positive electrode 4 is maintained while the electrodes are in close contact with each other.

The first negative electrode packing 7b has a shape in which the outer periphery of the first negative electrode 5 is hollowed out to the size of the electrode. It is attached with tightening pressure so that the solution in 12 (the first positive and negative electrode supply solution 9a to be described later) does not leak. The first negative electrode packing 7b is thicker than the first negative electrode 5, and is crushed by being pressed by the tightening pressure so that the first negative electrode spacer 6 and the first negative electrode side tank housing side surface 8b are crushed. It is desirable that the thickness of the first cathode 5 be held while adhering to the .

The first positive electrode tank housing side surface 8 a is arranged so as to be in direct contact with the outside of the first positive electrode 4 . The first positive electrode-side tank housing side surface 8a is provided with an inner surface of the first positive electrode-side tank housing side surface 8a in order to suppress penetration of the solution to the outside of the first positive electrode 4, and to improve adhesion. packing (not shown) is attached, and it is desirable to apply tightening pressure to suppress the solution from flowing to the outside of the electrode. In addition, even if the solution flows around the outside of the electrode, leakage does not occur outside. Since the platinum-containing catalyst is formed only on the inner surface of the first positive electrode 4, the efficiency of electrolysis can be improved if the solution can be prevented from leaking to the outside of the electrode.

The side surface 8b of the first cathode-side tank housing is arranged so as to be in direct contact with the outside of the first cathode 5. As shown in FIG. The side surface 8b of the first cathode-side tank housing is provided with an inner surface of the first cathode-side tank housing side surface 8b in order to suppress penetration of the solution to the outside of the first cathode 5, and to improve adhesion. packing (not shown) is attached, and it is desirable to apply tightening pressure to suppress the solution from flowing to the outside of the electrode. In addition, even if the solution flows around the outside of the electrode, leakage does not occur to the outside. Since the platinum-containing catalyst is formed only on the inner surface of the first cathode 5, the efficiency of electrolysis can be improved if the solution can be prevented from leaking to the outside of the electrode.

The first negative electrode solution supply port 9 is a connection port for flowing salt water to be electrolyzed into the first channel 12 between positive and negative electrodes, and is equipped with a connector (not shown) to which a tube can be connected. In order to supply salt water from the outside of the first positive electrode 45 , the first negative/positive electrode solution supply port 9 is processed at a position outside the first positive electrode 4 . The first cathode-electrode solution supply port 9 may be processed at a position on the outer periphery of the first cathode 5, or may be processed at a position outside both the first positive electrode 4 and the first negative electrode 5. good too.

The first cathodic electrode supply solution 9a is salt water. The first negative electrode supply solution 9 a is introduced from the first negative electrode solution supply port 9 into the first channel 12 between negative and positive electrodes.

The first positive electrode solution extraction port 10 is a connection port for extracting the electrolyzed first positive electrode extraction solution 10a from the channel, and is equipped with a connector (not shown) to which a tube can be connected. It is connected to a side connection tube 28 and a positive electrode side supply pump 29 . In order to extract the first positive electrode extracting solution 10 a outside the first positive electrode 4 , the first positive electrode solution extracting port 10 is processed at a position outside the first positive electrode 4 .

The first positive electrode extraction solution 10a is hypochlorous acid water electrolyzed from salt water. The first positive electrode extraction solution 10a is introduced into the first positive electrode solution extraction port 10 from the first channel 12 between the negative and positive electrodes.

More specifically, the first positive electrode extraction solution 10a contains NaClO and HClO, which are components of hypochlorous acid water, generated by electrolyzing salt water. Other components include NaOH produced by electrolysis, NaCl produced by decomposing NaClO, NaCl remaining after electrolysis of salt water, and the like. As the electrolysis of brine proceeds, the concentration of NaCl decreases and the concentrations of NaClO, HClO, and NaOH increase. Since HClO and NaOH react to form NaClO, hypochlorous acid water containing NaClO is produced when salt water is sufficiently electrolyzed. Components containing Na ⁺ ions, which are cations, become residual components after volatilization, and NaClO, NaOH, and NaCl are applicable as residual components generated by electrolysis of salt water.

The first cathode solution extraction port 11 is a connection port for extracting the electrolyzed first cathode extraction solution 11a from the channel, and is equipped with a connector (not shown) to which a tube can be connected. It is connected to a side connection tube 30 and a cathode side supply pump 31 . In order to extract the first cathode extraction solution 11 a outside the first cathode 5 , the first cathode solution extraction port 11 is processed at a position outside the first cathode 5 .

The first cathode extraction solution 11a is hypochlorous acid water electrolyzed from salt water. The first negative electrode extraction solution 11 a is introduced into the first negative electrode solution extraction port 11 from the first channel 12 between the negative and positive electrodes.

More specifically, the first anodic extraction solution 11a contains NaClO and HClO, which are components of hypochlorous acid water, generated by electrolyzing salt water. Other components include NaOH produced by electrolysis, NaCl produced by decomposing NaClO, NaCl remaining after electrolysis of salt water, and the like. As the electrolysis of brine proceeds, the concentration of NaCl decreases and the concentrations of NaClO, HClO, and NaOH increase. Since HClO and NaOH react to form NaClO, hypochlorous acid water containing NaClO is produced when salt water is sufficiently electrolyzed. Components containing Na ⁺ ions, which are cations, become residual components after volatilization, and NaClO, NaOH, and NaCl are applicable as residual components generated by electrolysis of salt water.

In the channel 12 between the first negative and positive electrodes, the electrolyzed hypochlorous acid water is mixed in the flow process, but in the vicinity of the first positive electrode 4, a large amount of Cl ⁻ ions, which are the negative ion components of the salt water, are distributed. However, in the vicinity of the first cathode 5, the salt water flows with a concentration gradient such that a large amount of Na ⁺ ions, which are cationic components of salt water, are distributed. Therefore, when electrolysis is performed between the first negative and positive electrodes, an acidic solution flows in the vicinity of the first positive electrode 4 and an alkaline solution flows in the vicinity of the first negative electrode. The first positive electrode solution extraction port 10 and the first negative electrode solution extraction port 11 correspond to the outer periphery of the first positive electrode 4 and the first negative electrode 5, so that they correspond to places where no voltage is applied. Since the first positive electrode solution extraction port 10 and the first negative electrode solution extraction port 11 are designed in the vicinity of one negative electrode 5, hypochlorous acid water that is more acidic and more alkaline is extracted, respectively. Specifically, acidic hypochlorous acid water containing a large amount of HCl and HClO is extracted as the first positive electrode extraction solution 10a from the first positive electrode solution extraction port 10 provided on the first positive electrode 4 side, and the first Alkaline hypochlorous acid water containing a large amount of NaOH is extracted as a first cathode extraction solution 11a from a first cathode solution extraction port 11 provided on the cathode 5 side.

Here, the first negative electrode solution supply port 9 is preferably arranged on the lower side in the vertical direction, and the first positive electrode solution extraction port 10 and the first negative electrode solution extraction port 11 are preferably arranged on the upper side in the vertical direction. should be placed in When oxygen gas, hydrogen gas, and the like are generated by the electrolysis reaction in the channel, the gas can be more efficiently discharged together with the solution if the extraction ports are arranged upward.

The first cathode-positive electrode flow path 12 is a flow path formed in a region surrounded by the first positive electrode 4, the first cathode-positive electrode spacer 6, and the first cathode electrode 5, and is a so-called non-diaphragm electrolytic flow path. is. The first inter-negative electrode flow path 12 is formed meanderingly by the first inter-positive electrode flow path hole 12 a of the first inter-negative electrode spacer 6 . More specifically, the first channel 12 between negative and positive electrodes reciprocates in the horizontal direction, and the number of reciprocations in the horizontal direction increases the distance for electrolysis until the solution reaches from the bottom to the top. Furthermore, by reducing the channel width of the first cathode-positive electrode channel 12, the distance becomes longer, and the electrolysis time can be lengthened. In order to reduce backflow of the liquid in the first channel 12 between the negative and positive electrodes, it is desirable that the first channel 12 between the negative and positive electrodes has a structure in which the first channel 12 between the negative and positive electrodes goes upward in one direction, except for reciprocating in the horizontal direction. The first cathode-positive electrode channel 12 has a first anode-positive electrode solution supply port 9 on one side and a first positive electrode solution extraction port 10 and a first cathode solution extraction port 11 on the other side, A first negative electrode supply solution 9a is circulated inside. The amount of electrolysis is controlled by the applied voltage current and flow velocity in the channel. The flow rate can be controlled by installing a positive electrode side supply pump 29 after the first positive electrode solution extraction port 10 and installing a negative electrode side supply pump 31 after the first negative electrode solution extraction port 11 . . Each supply pump is desirably of a system that can be controlled at a constant flow rate, and for example, a tube pump can be used. By allowing the solution to flow at a constant flow rate, it is possible to control the electrolysis time in the flow channel at a constant level, so that the concentration of the hypochlorous acid water to be extracted can be stably controlled.

The electrolysis power supply 13 is a DC power supply that is connected to the first positive electrode 4 and the first negative electrode 5 and can apply current and voltage to the first positive electrode 4 and the first negative electrode 5 . The electrolysis power supply 13 may be used as a constant current controlled power supply so as to maintain a constant current, or may be used as a constant voltage controlled power supply so as to generate a constant voltage. In order to reduce scale accumulation, the electrolysis power supply 13 switches the potentials of the first positive electrode 4 and the first negative electrode 5 each time salt water is passed through the hypochlorous acid water generating unit 2, for example. It may be controlled to reverse polarity and dissolve adhering scale.

As described above, the hypochlorous acid water generating unit 2 is configured by each member.

<Hypochlorous acid water supply unit>
Next, the hypochlorous acid water supply unit 3 constituting the hypochlorous acid water supply device 1 will be described with reference to FIGS. 1 and 6 to 9. FIG. FIG. 6 is a schematic diagram of the hypochlorous acid water treatment unit 3. As shown in FIG. FIG. 7 is an exploded perspective view of the hypochlorous acid water treatment unit 3. FIG. FIG. 8 is a vertical cross-sectional image diagram of the hypochlorous acid water treatment unit 3 . FIG. 9 is a horizontal cross-sectional image diagram of the hypochlorous acid water treatment unit 3 .

6 to 9, the hypochlorous acid water treatment unit 3 includes a second positive electrode 14, a second negative electrode 15, a diaphragm 16, a second positive electrode side spacer 17, a second negative electrode Electrode-side spacer 18, second positive electrode packing 19a, second negative electrode packing 19b, second positive electrode-side tank housing side surface 20a, second negative electrode-side tank housing side surface 20b, and second positive electrode A solution supply port 21, a second positive electrode solution extraction port 22, a second negative electrode solution supply port 23, a second negative electrode solution extraction port 24, a second positive electrode side channel 25, and a second negative electrode. A side channel 26 and an electrodialysis power source 27 are provided.

The second positive electrode 14 is a planar electrode plate. The surface of the electrode plate of the second positive electrode 14 is exposed along the channel of the second positive electrode-side channel 25 by the second positive electrode-side spacer 17 . The second positive electrode 14 is an electrode that functions as an anode when current is passed by the electrodialysis power supply 27 . The second positive electrode 14 is arranged substantially parallel to and facing the second negative electrode 15 . The second positive electrode 14 has a platinum-containing catalyst formed on the surface of a titanium base material, and is made of a material that is highly efficient in generating hypochlorous acid by electrolysis. A catalyst containing platinum is formed at least on the surface of the second positive electrode 14 exposed along the second positive electrode side flow channel 25 . The main purpose is to move cations by electrodialysis to generate hypochlorous acid water that suppresses NaClO and NaOH as residual components, but NaCl and salt water generated by decomposition of NaClO are electrolyzed. NaCl remaining without being dissolved can also be changed to hypochlorous acid by the platinum electrode.

The second cathode 15 is a planar electrode plate. The surface of the electrode plate of the second cathode 15 is exposed along the channel of the second cathode side channel 26 by the second cathode side spacer 18 . The second cathode electrode 15 is an electrode that functions as a cathode when current is passed by the electrodialysis power supply 27 . The second negative electrode 15 is arranged substantially parallel to and facing the second positive electrode 14 . The second negative electrode 15 forms a platinum-containing catalyst on its surface, similar to the second positive electrode 14 . The platinum-containing catalyst is formed at least on the surface of the second cathode 15 exposed along the channel 26 on the second cathode side. In addition, the second positive electrode 14 and the second negative electrode 15 in the region where electrodialysis is performed by exposing them along the second positive electrode side channel 25 and the second negative electrode side channel 26 have the same shape, and are separated from each other by a facing distance. The shorter the length, the easier it is for ions to move. If the facing distance is short, the flow rate in the flow path will decrease, and the amount of hypochlorous acid water that can be generated will also decrease. is desirable.

The second positive electrode 14 and the second negative electrode 15 constitute a second negative electrode as a pair of opposing electrodes.

The diaphragm 16 is a planar thin film. The diaphragm 16 is arranged substantially parallel to and facing the second positive electrode 14 and the second negative electrode 15 . The diaphragm 16 is provided so as to separate the second positive electrode side channel 25 and the second negative electrode side channel 26 . The diaphragm 16 is an ion exchange membrane (cation exchange membrane) capable of transferring cations such as Na ⁺ ions related to NaClO and NaOH, which are residual components of hypochlorous acid water. The diaphragm 16 can move cations to the second negative electrode 15 by applying a voltage to the second positive electrode 14 and the second negative electrode 15 . Examples of the cation exchange membrane include Nafion manufactured by DuPont. Since the cations are concentrated on the second negative electrode 15 side, there is a possibility that scale components contained in tap water or the like may be deposited during long-term use. In order to reduce scale accumulation, for example, each time hypochlorous acid water is passed through the hypochlorous acid water treatment unit 3, the potentials of the second positive electrode 14 and the second negative electrode 15 are switched to reverse polarity, Dissolve attached scale. When it is assumed that the electrodes will be used with their polarities reversed, it is desirable that the second positive electrode 14 and the second negative electrode 15 be similarly treated with a catalyst containing platinum.

The second positive electrode side spacer 17 is an insulating member. The second positive electrode side spacer 17 controls the distance between the second positive electrode 14 and the diaphragm 16 to a predetermined distance. The second positive electrode side spacer 17 has, inside the second positive electrode side spacer 17, a second positive electrode side channel hole 25a that forms a second positive electrode side channel 25, which will be described later. The second positive electrode side channel hole 25 a is a hole that forms the second positive electrode side channel 25 formed in the second positive electrode side spacer 17 . The second positive electrode side channel hole 25a is formed through the front and back of the second positive electrode side spacer 17, and is formed in a meandering manner so as to reciprocate in the horizontal direction and rise step by step. ing. In addition, on the surface of the second positive electrode side spacer 17, a meandering packing member (not shown), which is the same as the second positive electrode side spacer 17, is provided on the surface of the second positive electrode side spacer 17 in order to increase the adhesion between the second positive electrode 14 and the diaphragm 16. is installed. The second positive electrode side spacer 17 corresponds to the "first spacer member" in the claims.

The second cathode side spacer 18 is an insulating member. The second cathode side spacer 18 controls the distance between the second cathode 15 and the diaphragm 16 . The second cathode side spacer 18 has a second cathode side channel hole 26a inside the second cathode side spacer 18 that forms a second cathode side channel 26 to be described later. The second cathode side channel hole 26 a is a hole that forms the second cathode side channel 26 formed in the second cathode side spacer 18 . The second cathode-side channel hole 26a is formed through the front and back of the second cathode-side spacer 18, and is formed in a meandering manner so as to reciprocate in the horizontal direction and rise step by step. ing. Here, the second negative electrode side channel hole 26a and the second positive electrode side channel hole 25a are arranged so as to face each other. Further, on the surface of the second cathode-side spacer 18, a meandering packing member (not shown), which is the same as the second cathode-side spacer 18, is provided on the surface of the second cathode-side spacer 18 in order to increase the adhesion between the second cathode 15 and the diaphragm 16. is installed. The second cathode-side spacer 18 corresponds to the "second spacer member" in the claims.

The second positive electrode packing 19a has a shape in which the outer periphery of the second positive electrode 14 is hollowed out to the size of the electrode. It is attached with tightening pressure so that the solution in 25 (the second positive electrode supply solution 21a to be described later) does not leak. As a member of the second positive electrode packing 19a, insulating silicone rubber can be used. The second positive electrode packing 19a is thicker than the second positive electrode 14, and is crushed by being pressed by the tightening pressure, thereby connecting the second positive electrode side spacer 17 and the second positive electrode side tank housing side surface 20a. It is desirable that the thickness of the second positive electrode 14 is retained while the electrodes are in close contact with each other.

The second cathode packing 19b has a shape in which the outer periphery of the second cathode 15 is hollowed out to the size of the electrode. It is attached with tightening pressure so that the solution inside (the second cathode supply solution 23a to be described later) does not leak. As the member of the second cathode packing 19b, insulating silicon rubber can be used. The second cathode packing 19b is thicker than the second cathode 15, and is crushed by the tightening pressure so that the second cathode side spacer 18 and the second cathode side tank housing side surface 20b are crushed. It is desirable that the thickness of the second cathode 15 be maintained while adhering to the second cathode 15 .

The second positive electrode tank housing side surface 20 a is arranged so as to be in direct contact with the outside of the second positive electrode 14 . The second positive electrode-side tank housing side surface 20a is provided on the inner surface of the second positive electrode-side tank housing side surface 20a in order to prevent the solution from permeating to the outside of the second positive electrode 14, and to increase adhesion. packing (not shown) is attached, and it is desirable to apply tightening pressure to suppress the solution from flowing to the outside of the electrode. In addition, even if the solution flows around the outside of the electrode, leakage does not occur to the outside. Since the platinum-containing catalyst is formed only on the inner surface of the second positive electrode 14, the efficiency of electrodialysis can be improved if the solution can be prevented from flowing out of the electrode.

The second cathode side tank housing side surface 20b is arranged so as to be in direct contact with the outside of the second cathode 15 . In order to prevent the solution from permeating to the outside of the second negative electrode 15, the inner surface of the second cathode side tank housing side surface 20b is provided with the second cathode side tank housing side surface 20b to increase adhesion. packing (not shown) is attached, and it is desirable to apply tightening pressure to suppress the solution from flowing to the outside of the electrode. In addition, even if the solution flows around the outside of the electrode, leakage does not occur to the outside. Since the platinum-containing catalyst is formed only on the inner surface of the second negative electrode 15, the efficiency of electrode dialysis can be improved if the solution can be prevented from leaking to the outside of the electrode.

The second positive electrode solution supply port 21 is a connection port for flowing a second positive electrode supply solution 21a to be electrodialyzed into the channel, and is attached with a connector (not shown) to which a tube can be connected. In order to supply the second positive electrode supply solution 21 a from the outside of the second positive electrode 14 , the second positive electrode solution supply port 21 is processed at a position outside the second positive electrode 14 .

The second positive electrode supply solution 21 a is hypochlorous acid water electrolyzed from salt water in the hypochlorous acid water generation unit 2 . More specifically, the second positive electrode supply solution 21a is the first positive electrode extraction solution 10a supplied from the first positive electrode solution extraction port 10, and is acidic hypochlorous acid water containing a large amount of HCl and HClO. be. The second positive electrode supply solution 21 a is introduced from the second positive electrode solution supply port 21 into the second positive electrode side channel 25 .

The second positive electrode solution extraction port 22 is a connection port for extracting the electrodialyzed second positive electrode extraction solution 22a from the channel, and is equipped with a connector (not shown) to which a tube can be connected. In order to extract the second positive electrode extracting solution 22 a outside the second positive electrode 14 , the second positive electrode solution extracting port 22 is processed at a position outside the second positive electrode 14 .

The second positive electrode extraction solution 22a is hypochlorous acid water containing HClO as a main component. The second positive electrode extraction solution 22 a is introduced into the second positive electrode solution extraction port 22 from the second positive electrode side channel 25 .

More specifically, the second positive electrode extracting solution 22a flows through the second positive electrode supply solution 21a through the second positive electrode side channel 25, and extracts the positive from the second positive electrode supply solution 21a as a factor of residual components. It is a solution in which ions are separated and diluted. Since the hypochlorous acid water (first positive electrode supply solution 10a) generated by electrolyzing salt water in the hypochlorous acid water unit 2 is used as the second positive electrode supply solution 21a, the second positive electrode In the extraction solution 22a, Na ⁺ ions, which are cations, are separated and diluted to form hypochlorous acid water containing HClO as a main component. pH indicates acidity.

The second cathode solution supply port 23 is a connection port for flowing a second cathode supply solution 23a to be electrodialyzed into the channel, and is equipped with a connector (not shown) to which a tube can be connected. In order to supply the second cathode supply solution 23 a from the outside of the second cathode 15 , the second cathode solution supply port 23 is processed at a position outside the second cathode 15 .

The second cathode supply solution 23 a is hypochlorous acid water electrolyzed from salt water in the hypochlorous acid water generation unit 2 . More specifically, the second cathode supply solution 23a is the first cathode extraction solution 11a supplied from the first cathode solution extraction port 11, and is alkaline hypochlorous acid water containing a large amount of NaOH. A second cathode supply solution 23 a is introduced from the second cathode solution supply port 23 into the second cathode side channel 26 .

The second cathode solution extraction port 24 is a connection port for extracting the electrodialyzed second cathode extraction solution 24a from the channel, and is equipped with a connector (not shown) to which a tube can be connected. In order to extract the second negative electrode extracting solution 24 a outside the second negative electrode 15 , the second negative electrode solution extracting port 24 is processed at a position outside the second negative electrode 15 .

The second cathode extraction solution 24a is hypochlorous acid water containing NaClO and NaOH as main components. The second cathode extraction solution 24 a is led out from the second cathode side channel 26 to the second cathode solution extraction port 24 .

More specifically, the second cathode extraction solution 24a is a solution in which the second cathode supply solution 23a is circulated through the second cathode side channel 26 to concentrate the cations that cause residual components. be. Since the hypochlorous acid water (first cathode supply solution 11a) generated by electrolyzing salt water in the hypochlorous acid water unit 2 is used as the second cathode supply solution 23a, the second cathode supply solution 23a In the extraction solution 24a, Na ⁺ ions, which are cations, are separated and concentrated to generate NaOH, resulting in hypochlorous acid water containing NaOH and NaClO as main components. pH indicates alkaline.

Here, it is preferable that the second positive electrode solution supply port 21 and the second negative electrode solution supply port 23 are arranged on the lower side in the vertical direction, and the second positive electrode solution extraction port 22 and the second negative electrode solution extraction It is desirable that the mouth 24 be arranged on the upper side in the vertical direction. When oxygen gas, hydrogen gas, and the like are generated by the electrodialysis reaction and the electrolysis reaction in the flow path, the gas can be more efficiently discharged together with the solution if the extraction port is arranged above.

The second positive electrode side channel 25 is a channel formed by the area surrounded by the second positive electrode 14 , the second positive electrode side spacer 17 and the diaphragm 16 . The second positive electrode side channel 25 is formed by meandering through the second positive electrode side channel hole 25 a of the second positive electrode side spacer 17 . More specifically, the second positive electrode-side channel 25 reciprocates in the horizontal direction, and the number of horizontal reciprocations until the anode-side solution reaches from the bottom to the top increases the distance for electrodialysis. Furthermore, by reducing the channel width of the second positive electrode side channel 25, the distance becomes longer, and the electrodialysis time can be lengthened. In order to reduce backflow of the liquid in the second positive electrode-side channel 25, it is desirable that the second positive electrode-side channel 25 has a structure in which the second positive electrode-side channel 25 goes in one direction from bottom to top except for reciprocating in the horizontal direction. The second positive electrode-side channel 25 is provided with the second positive electrode solution supply port 21 on one side and the second positive electrode solution extraction port 22 on the other side. A positive electrode supply solution 21a is circulating. The second positive electrode side channel 25 corresponds to the "first channel" in the claims.

The second cathode-side channel 26 is a channel formed by the area surrounded by the second cathode 15 , the second cathode-side spacer 18 and the diaphragm 16 . The second cathode-side channel 26 is formed by meandering second cathode-side channel holes 26 a of the second cathode-side spacer 18 . More specifically, the second cathode-side channel 26 reciprocates in the horizontal direction, and the distance for electrodialysis is obtained by the number of horizontal reciprocations until the cathode-side solution reaches from the bottom to the top. Further, by reducing the flow path width of the second cathode side flow path 26, the distance becomes longer, and the electrodialysis time can be lengthened. In order to reduce backflow of the liquid in the second cathode-side channel 26, it is desirable that the second cathode-side channel 26 has a structure in which the liquid flows in one direction from the bottom to the top, except for reciprocating in the horizontal direction. The second cathode side channel 26 is provided with the second cathode solution supply port 23 on one side and the second cathode solution extraction port 24 on the other side. A cathode supply solution 23a is circulating. The second cathode-side channel 26 corresponds to the "second channel" in the claims.

The second positive electrode side channel 25 and the second negative electrode side channel 26 face each other in a symmetrical shape with the diaphragm 16 interposed therebetween. That is, the second positive electrode side channel 25 and the second negative electrode side channel 26 are formed in meandering shapes facing each other with the diaphragm 16 interposed therebetween. In this manner, the second positive electrode side channel 25 and the second negative electrode side channel 26 constitute a so-called membrane electrolysis channel. Then, the Na ⁺ ions contained in the hypochlorous acid water flowing through the second positive electrode side channel 25 move to the second negative electrode side channel 26 side. The amount of ion movement is controlled by the applied voltage and current and the flow velocity in the channel. The flow rate can be controlled by installing a positive electrode side supply pump 29 in front of the second positive electrode solution supply port 21 and installing a negative electrode side supply pump 31 in front of the second negative electrode solution supply port 23 . . Each pump is desirably of a system that can be controlled at a constant flow rate, and for example, a tube pump can be used. By flowing the solution at a constant flow rate, it is possible to control the electrodialysis and electrolysis time in the flow channel constantly, so that the concentration of the hypochlorous acid water to be extracted can be stably controlled.

The electrodialysis power supply 27 is a DC power supply that is connected to the second positive electrode 14 and the second negative electrode 15 and can apply current and voltage to the second positive electrode 14 and the second negative electrode 15 . The electrodialysis power supply 27 may be used as a constant-current controlled power supply to maintain a constant current, or may be used as a constant-voltage controlled power supply to generate a constant voltage. In order to reduce scale accumulation, the electrodialysis power source 27, for example, each time the hypochlorous acid water is supplied to the hypochlorous acid water treatment unit 3, the second positive electrode 14 and the second negative electrode 15 It may be controlled to switch the potential to reverse the polarity and dissolve the adhering scale.

As shown in FIG. 1, the positive electrode side connection tube 28 is connected to the hypochlorous acid water treatment unit via the first positive electrode solution extraction port 10 of the hypochlorous acid water generation unit 2 and the positive electrode side supply pump 29. 3 and the second positive electrode solution supply port 21 . The positive electrode side connection tube 28 supplies the hypochlorous acid water (first positive electrode extraction solution 10a) generated in the hypochlorous acid water generation unit 2 by the operation of the positive electrode side supply pump 29 to hypochlorous acid. The solution is sent to the second positive electrode solution supply port 21 of the acid water treatment unit 3 . A silicon tube, for example, can be used for the positive electrode side connection tube 28 .

The negative electrode side connection tube 30 connects the first negative electrode solution extraction port 11 of the hypochlorous acid water generation unit 2 and the second negative electrode solution of the hypochlorous acid water treatment unit 3 via the negative electrode side supply pump 31. It is a tube that connects with the supply port 23 . The negative electrode side connection tube 30 connects the hypochlorous acid water ((first negative electrode extraction solution 11a) generated in the hypochlorous acid water generation unit 2 to the second negative electrode of the hypochlorous acid water treatment unit 3. The solution is fed to the solution supply port 23. For the negative electrode side connection tube 30, for example, a silicon tube or the like can be used.

The positive electrode side connection tube 28 and the negative electrode side connection tube 30 are, for example, of the same inner diameter and the same length, so that there is no difference in the flow rate and flow velocity of the solution flowing through them.

The positive electrode side supply pump 29 is a pump that generates a flow that supplies the first positive electrode extraction solution 10a generated in the hypochlorous acid water generation unit 2 as the second positive electrode supply solution 21a. More specifically, the positive electrode side supply pump 29 has a first positive electrode solution supply port 9, a first positive electrode inter-electrode channel 12, a first positive electrode solution extraction port 10, a second positive electrode solution supply port 21, a Each solution (salt water, first negative electrode supply solution 9a, first positive electrode extraction solution 10a, second positive electrode supply solution 21a, A second positive electrode extraction solution 22a) is caused to flow. At this time, the positive electrode side supply pump 29 integrally controls the flow rate of the solution flowing through the hypochlorous acid water generating unit 2 and at the same time controls the flow rate of the solution flowing through the hypochlorous acid water treatment unit 3 to be constant. Examples of pumps capable of delivering liquid at a constant flow rate include tube pumps and diaphragm pumps.

The cathode-side supply pump 31 is a pump that generates a flow for supplying the first cathode extraction solution 11a produced in the hypochlorous acid water production unit 2 as the second cathode supply solution 23a. More specifically, the cathode-side supply pump 31 has a first anode-positive electrode solution supply port 9, a first anode-positive electrode channel 12, a first cathode solution extraction port 11, a second cathode solution supply port 23, a second Each solution (salt water, first negative electrode supply solution 9a, first negative electrode extraction solution 11a, second negative electrode supply solution 22a, A flow of the second cathodic extraction solution 24a) is generated. At this time, the cathode-side supply pump 31 integrally controls the flow rate of the solution flowing through the hypochlorous acid water generating unit 2 and at the same time controls the flow rate of the solution flowing through the hypochlorous acid water treatment unit 3 to be constant. Examples of pumps capable of delivering liquid at a constant flow rate include tube pumps and diaphragm pumps.

The flow rate of the first cathode-positive electrode channel 12 is controlled as the total amount of the positive electrode-side supply pump 29 and the negative electrode-side supply pump 31 . Also, the positive electrode side supply pump 29 and the negative electrode side supply pump 31 correspond to the "supply pump" in the claims.

As described above, the hypochlorous acid water treatment unit 3 is configured by each member.

As shown in FIG. 1, the hypochlorous acid water supply device 1 has a flow path on the positive electrode side of each unit between the hypochlorous acid water generation unit 2 and the hypochlorous acid water treatment unit 3 described above. , and connected via a negative electrode side connection tube 30 provided in the channel on the negative electrode side of each unit. Then, the hypochlorous acid water supply device 1 continuously introduces salt water into the hypochlorous acid water generation unit 2, and continuously supplies the hypochlorous acid water from the hypochlorous acid water treatment unit 3 to the outside. do. More specifically, the hypochlorous acid water supply device 1 electrolyzes salt water that is continuously introduced into the hypochlorous acid water generation unit 2 to produce a second The second positive electrode extraction solution 22a delivered from the two positive electrode side channel 25 is supplied to the outside as acidic hypochlorous acid water. In addition, the hypochlorous acid water supply device 1 converts the second cathode extraction solution 24a delivered from the second cathode side channel 26 on the cathode side of the hypochlorous acid water treatment unit 3 into alkaline hypochlorous acid. Supplied to the outside as acid water.

Next, referring to FIGS. 4 and 5, the processing operation in the hypochlorous acid water generation unit 2 will be described.

As shown in FIGS. 4 and 5, in the hypochlorous acid water generating unit 2, the first cathode electrode supply solution 9a, which is salt water, passes through the first cathode electrode solution supply port 9 and flows into the first cathode electrode passage 12. continuously supplied to Then, the first negative electrode supply solution 9a supplied from the first negative electrode solution supply port 9 flows through the first channel 12 between the positive and negative electrodes which is formed in a meandering manner. At this time, the supply solution 9a for the first negative and positive electrodes flows through the channel 12 between the first positive and negative electrodes, and at the same time, a voltage is applied to the first positive electrode 4 and the first negative electrode 5 at both ends. When a voltage is applied, anions (Cl ⁻ ions) are attracted to the first positive electrode 4 side, and positive ions (Na ⁺ ions) are attracted to the first negative electrode 5 side, and the first positive electrode 4 is electrolyzed. HCl and HClO are produced on the side, and NaOH is produced on the first cathode 5 side. Further, HClO and NaOH react to generate NaClO. By repeating this, hypochlorous acid water containing NaClO as the main component and containing HClO, NaOH, and residual NaCl is produced.

In the processing operation in the hypochlorous acid water generation unit 2, the amount of electrolysis of NaCl is increased by increasing the time of electrolysis in the channel 12 between the first negative and positive electrodes, and the first positive electrode is extracted. Remaining NaCl (brine) in solution 10a and first cathode extraction solution 11a can be reduced. In order to lengthen the electrolysis time, it is necessary to lengthen the distance of the first channel 12 between the negative and positive electrodes. It is formed in a meandering manner, and the distance for electrolysis is earned by the number of horizontal reciprocations until the solution reaches from the bottom to the top. Furthermore, by reducing the cross-sectional area of the first cathode-positive electrode channel 12, the distance can be lengthened, and the electrolysis time can be lengthened.

Next, the treatment operation in the hypochlorous acid water treatment unit 3 will be described with reference to FIGS. 8 and 9. FIG.

As shown in FIGS. 8 and 9, in the hypochlorous acid water treatment unit 3, the second positive electrode supply solution 21a, which is hypochlorous acid water, passes through the second positive electrode solution supply port 21 to the second positive electrode. The second cathode supply solution 23a, which is hypochlorous acid water, is continuously supplied to the second cathode side channel 26 through the second cathode solution supply port 23 and continuously supplied to the side channel 25. be done. Then, the second positive electrode supply solution 21a supplied from the second positive electrode solution supply port 21 flows through the meandering second positive electrode side channel 25, and flows through the second positive electrode solution supply port 21. A second cathode supply solution 23a supplied from 23 flows through a second cathode side channel 26 that is also formed in a meandering manner. At this time, the second positive electrode supply solution 21a and the second negative electrode supply solution 23a face each other with the diaphragm 16 interposed therebetween and flow in the same direction to form the second positive electrode side channel 25 and the second negative electrode side channel. 26, a voltage is applied to the second positive electrode 14 and the second negative electrode 15 at both ends. When a voltage is applied, negative ions are attracted to the second positive electrode 14 side and positive ions (Na ⁺ ions) are attracted to the second negative electrode 15 side. Since the diaphragm 16 is composed of a membrane that is permeable only to cations, the cations (Na ⁺ ions) contained in the second positive electrode supply solution 21a flowing through the second positive electrode-side channel 25 are 16 , cations (Na 2 ⁺ ions) are attracted to the second cathode 15 side through the second cathode supply solution 23 a in the second cathode side channel 26 . On the contrary, since the anions flowing through the second negative electrode side channel 26 cannot pass through the diaphragm 16, only the anions contained in the second positive electrode side channel 25 are attracted to the second positive electrode 14. By repeating this, the cations (Na ⁺ ions) contained in the second positive electrode supply solution 21a flowing through the second positive electrode-side channel 25 are converted to the second negative electrode flowing through the second negative electrode-side channel 26. Electrodialysis progresses by moving to the electrode supply solution 23a, and the second positive electrode supply solution 21a flowing through the second positive electrode-side channel 25 has cations (Na ⁺ ions) separated and diluted to form a second negative electrode supply solution 21a. The second cathode supply solution 23a flowing through the electrode-side channel 26 is extracted with concentrated cations (Na ⁺ ions). As a result, from the second positive electrode solution extraction port 22, as the second positive electrode extraction solution 22a, the residual components NaClO and NaOH are separated and diluted, and hypochlorous acid water containing the HClO component as the main component is extracted. be. Conversely, from the second cathode solution extraction port 24, the Na ⁺ ions constituting the residual components are concentrated and NaOH is generated as the second cathode extraction solution 24a from the second cathode solution extraction port 24. ) is extracted.

In the treatment operation in the hypochlorous acid water treatment unit 3, by lengthening the electrodialysis time in the second positive electrode side channel 25 and the second negative electrode side channel 26, cations (Na ⁺ ions ) can be increased to further reduce the residual components of NaClO and NaOH in the second positive electrode extraction solution 22a. In order to lengthen the electrodialysis time, it is necessary to lengthen the distances of the second positive electrode side channel 25 and the second negative electrode side channel 26. It is formed in a meandering manner so that it rises one by one, and the distance for electrodialysis is earned by the number of horizontal reciprocations until the solution reaches from the bottom to the top. Furthermore, by reducing the cross-sectional areas of the second positive electrode side channel 25 and the second negative electrode side channel 26, the distance becomes longer, and the electrodialysis time can be lengthened.

The pumps are controlled so that the solutions passing through the second positive electrode-side channel 25 and the second negative electrode-side channel 26 have the same flow rate, but they may be different from each other. Different flow rates affect the concentration of each solution extracted. For example, when the flow velocity in the second positive electrode side channel 25 is relatively increased and the flow velocity in the second negative electrode side channel 26 is relatively decreased, the second positive electrode side channel 25 and the second The second cathode extraction solution 24a extracted from the second cathode-side channel 26 is smaller and has a higher concentration than when the two-cathode-side channels 26 have the same flow rate. Accordingly, when the second cathode extraction solution 24a is drained, it is desirable to slow down the flow velocity of the second cathode-side channel 26. As shown in FIG.

Next, referring to FIG. 10, the hypochlorous acid water supply device 1 (the hypochlorous acid water generation unit 2 and the hypochlorous acid water treatment unit 3) is actually circulated and the second positive electrode solution extraction port The characteristics (conductivity, pH, and effective chlorine concentration) of the hypochlorous acid water of the second positive electrode extraction solution 22a and the second negative electrode extraction solution 24a extracted from the second positive electrode extraction solution 22 and the second negative electrode solution extraction port 24, respectively. do. FIG. 10 is a diagram showing the relationship between the characteristics of the hypochlorous acid water flowing through the hypochlorous acid water supply device 1 and the electrodialysis time. More specifically, (a) of FIG. 10 is a diagram showing the relationship between electrodialysis time and conductivity by the hypochlorous acid water supply device 1 . (b) of FIG. 10 is a diagram showing the relationship between electrodialysis time and pH by the hypochlorous acid water supply device 1 . (c) of FIG. 10 is a diagram showing the relationship between the electrodialysis time by the hypochlorous acid water supply device 1 and the effective chlorine concentration.

In the experimental evaluation in FIG. 10, the hypochlorous acid water generation unit 2 was formed with the first channel 12 between the negative and positive electrodes having a channel cross-sectional area of 26 mm ² and a channel length of 675 mm. A second positive electrode side channel 25 and a second negative electrode side channel 26 having a channel cross-sectional area of 8 mm ² and a channel length of 675 mm were formed in the acid water treatment unit 3 . The flow rate conditions of the positive electrode side supply pump 29 and the negative electrode side demand pump 31 are both circulated at flow rates of 153 mL/h and 250 mL/h, and the electrolysis time of the hypochlorous acid water generation unit 2 is And the electrodialysis time of the hypochlorous acid water treatment unit 3 was adjusted, and the conductivity, pH, and effective chlorine concentration of the second positive electrode extraction solution 22a and the second negative electrode extraction solution 24a were measured.

The salt water 9a supplied to the first negative electrode solution supply port 9 had a conductivity of 405 μS/cm, a pH of 6.7, an effective chlorine concentration of 0 ppm, and a chloride ion concentration of 138 ppm. . Electrolysis and electrodialysis were performed using a power source capable of applying a constant current of 0.2 A as the electrolysis power source 13 and the electrodialysis power source 27 . Here, the electrolysis time refers to the time during which the solution is in direct contact with the first positive electrode 4 and the first negative electrode 5 in the channel, and the longer the electrolysis time, the slower the flow rate. . The electrodialysis time refers to the time during which the solution is in direct contact with the second positive electrode 14 and the second negative electrode 15 in the channel, and the longer the electrodialysis time, the slower the flow rate. This time, electrodialysis was performed by setting the flow rate on the anode side and the cathode side to be the same.

Looking at the change in conductivity shown in FIG. 10(a), the longer the electrodialysis time, in other words, the slower the flow rate, the more conductive the second positive electrode extraction solution 22a extracted from the second positive electrode solution extraction port 22 becomes. The conductivity (conductivity on the anode side) decreases, and the conductivity (conductivity on the cathode side) of the cathode-side extraction solution 12a extracted from the cathode-side solution extraction port 12 increases. This is contained in the anode side solution when the hypochlorous acid water generated in the hypochlorous acid water generation unit 2 is circulated through the second positive electrode side channel 25 of the hypochlorous acid water treatment unit 3. It is thought that Na ⁺ ions, which are cations, moved through the diaphragm 16 to the cathode side, and changed from NaClO to HClO on the anode side, resulting in a decrease in electrical conductivity. NaClO ionizes into Na ⁺ ions and ClO 2 ⁻ ions, but since HClO mainly exists as a molecule, the conductivity decreases when NaClO changes to HClO.

Looking at the transition of pH shown in FIG. The pH of ) is changing to the alkaline side. This suggests the effect of conversion to HClO on the anode side. The reason that the longer the electrodialysis time on the anode side is, the closer the pH is to neutrality is thought to be due to electrolysis of the chloride ions remaining in the solution into hypochlorous acid. On the other hand, on the cathode side, NaOH is formed by movement of Na ⁺ ions, and the cathode side becomes alkaline.

Looking at the transition of the effective chlorine concentration shown in (c) of FIG. 10, the effective chlorine concentration of the second positive electrode extraction solution 22a (the effective chlorine concentration on the anode side) increases with the electrodialysis time. Under the flow velocity conditions shown in FIG. 10(a) where the conductivity is reduced to 405 μS/cm or less, the increase rate of the available chlorine concentration is reduced, and it is considered that the change to HClO has been completed. Similarly, for the second cathode extraction solution 24a, the available chlorine concentration (available chlorine concentration on the cathode side) increases with the electrodialysis time. This is because when the flow velocities of the positive electrode side supply pump 29 and the negative electrode side supply pump 31 slow down, the electrolysis time in the hypochlorous acid water generation unit 2 increases and the amount of hypochlorous acid water generated increases. The reason for this is thought to be that the amount of hypochlorous acid water extracted from the second negative electrode extraction port 24 of the hypochlorous acid water treatment unit 3 also increases.

The hypochlorous acid water supply device 1 simultaneously extracts hypochlorous acid water mainly composed of HClO with high sterilization power from the anode side and hypochlorous acid water mainly composed of NaClO and NaOH with high detergency from the cathode side. can do. Hypochlorous acid water containing mainly HClO is a solution in which residual components are suppressed, and it is possible to suppress metal corrosion caused by residual components even during space spraying while maintaining sterilization power. On the other hand, hypochlorous acid water containing NaClO and NaOH as a main component cannot be sprayed in space because it is a solution that leaves residual components, but it is a solution with high detergency and is effective in washing areas with acidic dirt such as drains. can bring In the hypochlorous acid water treatment device 1, hypochlorous acid water mainly composed of HClO generated on the anode side is used for space sterilization, while hypochlorous acid mainly composed of NaClO and NaOH is generated on the cathode side on the opposite side. Water can also be used for cleaning.

As described above, according to the hypochlorous acid water supply apparatus 1 according to Embodiment 1, the following effects can be obtained.

(1) The hypochlorous acid water supply device 1 supplies salt water to the meandering diaphragmless electrolysis flow path (first anode-positive electrode flow path 12) between a pair of first anode-positive electrodes (first positive electrode). 4 and the first negative electrode 5), a hypochlorous acid water generation unit 2 for continuously electrolytically generating hypochlorous acid water by energizing the current, and a meandering diaphragm electrolysis flow path (second positive electrode Hypochlorous acid water supplied from the hypochlorous acid water generation unit 2 is supplied to each of the side flow path 25 and the second cathode side flow path 26) between the pair of second negative and positive electrodes (second positive electrode 14 and and a hypochlorous acid water treatment unit 3 that continuously treats by energizing the hypochlorous acid water treatment unit 3 (between the second negative electrode 15), and the electrolytic flow path (second The hypochlorous acid water sent from the positive electrode side channel 25) is supplied to the outside.

According to such a configuration, in the hypochlorous acid water generation unit 2, salt water is electrolyzed in the non-diaphragm electrolysis channel (the first channel between the negative and positive electrodes 12) to generate hypochlorous acid water, and further with the diaphragm Hypochlorous acid water generated in the non-diaphragm electrolysis flow path is circulated in the electrolysis flow path (the second positive electrode side flow path 25 and the second negative electrode side flow path 26), and the factor of the residual component is removed from the positive electrode side. It can be extracted as hypochlorous acid water in which the cations that become are separated and reduced. Therefore, the hypochlorous acid water supply device 1 of the one-pass type can be provided, which can supply the hypochlorous acid water from which the residual components generated by the electrolysis of the salt water are separated to the outside.

In addition, in the hypochlorous acid water supply device 1, each flow path (non-diaphragm electrolysis flow path and diaphragm electrolysis flow path) is made into a meandering shape, so that the salt water and the hypochlorous acid water come into contact with the electrodes and the diaphragm, respectively. As a result, the distance and time for electrolysis of salt water and separation of cations that cause residual components from hypochlorous acid water can be lengthened. In other words, the electrolysis of salt water and the separation of cations that cause residual components from hypochlorous acid water can be efficiently performed with respect to the size of the electrode.

(2) In the hypochlorous acid water supply device 1, the non-diaphragm electrolysis flow path (the first cathode-positive electrode flow path 12) of the hypochlorous acid water generation unit 2 includes the planar first positive electrode 4 and the It is composed of a planar first negative electrode 5 facing one positive electrode 4 and a first negative electrode spacer 6 provided between the first positive electrode 5 and the first negative electrode 5, A pair of first negative and negative electrodes (first positive electrode 4 and first negative electrode 5) are exposed to the non-diaphragm electrolytic flow path by a spacer 6 between first negative and positive electrodes. It was configured in a meandering shape. By doing so, the ability to electrolyze salt water can be changed by the shape of the channel formed in the spacer 6 between the first negative and positive electrodes, so that the area and time for electrolyzing the salt water can be freely designed. be able to.

(3) In the hypochlorous acid water supply device 1, the diaphragm electrolysis flow path (the second positive electrode side flow path 25 and the second negative electrode side flow path 26) of the hypochlorous acid water treatment unit 3 is connected to the second A meandering second positive electrode-side channel 25 in which the positive electrode 14 is exposed and extended along the channel, and a second positive electrode-side channel 25 are arranged in parallel so as to face the second negative electrode 15 . a meandering second cathode-side channel 26 exposed and extending along the channel, and the second positive electrode-side channel 25 and the second cathode-side channel 26 are separated from each other; and a diaphragm 16 that allows the passage of cations contained in the solution flowing through the channel. The second positive electrode 14 is exposed to the second positive electrode side channel 25 by the spacer 17, and the second negative electrode 15 is exposed to the second negative electrode side channel 26 by the second negative electrode side spacer 18, thereby meandering. The hypochlorous acid water supplied from the hypochlorous acid water generating unit 2 both flows in the same direction through the second positive electrode side channel 25 and the second negative electrode side channel 26. configured as

According to such a configuration, the hypochlorous acid water generated by electrolyzing the salt water is circulated while applying a voltage in the same direction across the diaphragm 16, which causes residual components from the hypochlorous acid water. Cations can be separated and reduced. Therefore, the hypochlorous acid water treatment unit 3 can produce hypochlorous acid water with reduced residual components generated by the electrolysis of salt water. More specifically, the hypochlorous acid water extracted from the anode side becomes hypochlorous acid water in which cations that cause residual components are separated and diluted, and the hypochlorous acid water extracted from the cathode side is , it becomes hypochlorous acid water in which cations, which are factors of residual components, are concentrated. In other words, from the anode side of the hypochlorous acid water supply device 1, hypochlorous acid water in which cations that are factors of residual components are separated and diluted is obtained, and from the cathode side of the hypochlorous acid water supply device 1, At the same time, hypochlorous acid water with high detergency containing an alkaline solution in which cations that cause residual components are concentrated can be obtained.

(4) The hypochlorous acid water supply device 1 includes a planar second positive electrode 14, a planar diaphragm 16 facing the second positive electrode 14, and between the second positive electrode 14 and the diaphragm 16 and a second positive electrode-side spacer 17 for exposing the second positive electrode 14 and the diaphragm 16 in the second positive electrode-side channel 25 along the channel, the second positive electrode-side channel comprising: It was composed of a second positive electrode 14 and a diaphragm 16 exposed along the flow path, and a second positive electrode-side spacer 17 . In addition, a planar second cathode 14, a planar diaphragm 16 facing the second cathode 15, and a planar diaphragm 16 provided between the second cathode 15 and the diaphragm 16, along the flow path, the second cathode A second cathode-side spacer 18 that exposes the second cathode 15 and the diaphragm 16 is provided in the electrode-side flow path 26, and the second cathode-side flow path 26 has the second cathode exposed along the flow path. It is composed of an electrode 15 , a diaphragm 16 , and a second cathode-side spacer 18 . By doing so, hypochlorous acid generated by electrolyzing salt water is generated by the flow path shape formed in the second positive electrode side spacer 17 and the flow path shape formed in the second cathode side spacer 18. Since the ability to separate cations that cause residual components from water can be changed, the area and time for separating cations that cause residual components from hypochlorous acid water can be freely designed. .

(5) The hypochlorous acid water supply device 1 is provided in a flow path that communicates and connects the hypochlorous acid water generation unit 2 and the hypochlorous acid water treatment unit 3, and has a diaphragm electrolysis flow path (second positive Supply pumps (positive electrode side supply pump 29 and negative electrode side supply pump 31) that supply hypochlorous acid water from the hypochlorous acid water generation unit 2 to the electrode side flow path 25 and the second negative electrode side flow path 26) ). The supply pump was adapted to supply the hypochlorous acid water from the hypochlorous acid water generation unit 2 to the second positive electrode side channel 25 and the second negative electrode side channel 26 at a constant flow rate. As a result, the time during which the voltage is applied in the second positive electrode-side channel 25 can be made constant, and the time during which the voltage is applied in the second negative electrode-side channel 26 can be made constant. can be For this reason, the concentration at which the cations that cause residual components in the hypochlorous acid water in the second positive electrode side channel 25 are separated and diluted, and the hypochlorous acid water in the second negative electrode side channel 26 It is possible to stabilize the concentration of cations that contribute to the residual components of .

(Embodiment 2)
A spatial sterilization system 40 using a hypochlorous acid water supply apparatus 1 according to Embodiment 2 of the present invention will be described with reference to FIGS. 1 and 11. FIG. FIG. 11 is a schematic diagram of a space sterilization system 40 using the hypochlorous acid water supply device 1 according to Embodiment 2 of the present invention. A spatial sterilization system 40 according to Embodiment 2 described below is a system incorporating the hypochlorous acid water supply device 1 according to Embodiment 1. FIG. In the description of Embodiment 2, the same reference numerals are given to substantially the same configuration as the hypochlorous acid water supply device 1 according to Embodiment 1, and the description is partially simplified or omitted. There is

The space sterilization system 40 according to the second embodiment sprays the hypochlorous acid water generated from the hypochlorous acid water supply device 1 from the mist spray device 44 and flows it to the drain port 46 in the bathroom space. It is a system that sterilizes and cleans the bathroom space. The bathroom space corresponds to the "predetermined space" in the claims.

Specifically, as shown in FIG. 11, the space sterilization system 40 includes a hypochlorous acid water supply device 1 (hypochlorous acid water generation unit 2, hypochlorous acid water treatment unit 3, positive electrode side supply Pump 29, negative electrode side supply pump 31), positive electrode side extraction solution tank 41, negative electrode side extraction solution tank 42, positive electrode side extraction solution bathroom piping 43, mist spray device 44, negative electrode side An extraction solution bathroom plumbing 45 and a drain 46 are provided.

A hypochlorous acid water generating unit 2 that constitutes the hypochlorous acid water supply device 1 is a unit that supplies salt water (aqueous sodium chloride solution) and generates hypochlorous acid water by electrolysis. As described above, the hypochlorous acid water produced by the hypochlorous acid water production unit 2 contains NaClO and HClO, which are components of the hypochlorous acid water. Other components include NaOH produced by electrolysis, NaCl produced by decomposing NaClO, NaCl remaining after electrolysis of salt water, and the like. More specifically, in the hypochlorous acid water generation unit 2, the positive electrode side supply pump 29 and the negative electrode side supply pump 31 operate to operate the first positive electrode solution extraction port provided on the first positive electrode 4 side. Acidic hypochlorous acid water containing a large amount of HCl and HClO is extracted from 10 as a first positive electrode extraction solution 10a, and the first negative electrode is extracted from a first negative electrode solution extraction port 11 provided on the first negative electrode 5 side. Alkaline hypochlorous acid water containing a large amount of NaOH is extracted as the solution 11a.

The hypochlorous acid water treatment unit 3 circulates the hypochlorous acid water supplied from the hypochlorous acid water generation unit 2, and from the second positive electrode side channel 25, the next The second positive electrode extraction solution 22a, which is chlorous acid water, is extracted, and the second negative electrode extraction solution 24a, which is hypochlorous acid water mainly composed of NaClO and NaOH with high detergency, is extracted from the second negative electrode side channel 26. This is the unit to extract. The second positive electrode extraction solution 22 a is stored in the positive electrode side extraction solution tank 41 and then sent to the mist spraying device 44 through the positive electrode side extraction solution bathroom pipe 43 . Then, the mist spray device 44 sprays the second positive electrode extraction solution 22a into the bathroom space. Further, the second cathode extraction solution 24 a is stored in the cathode side extraction solution tank 42 and then sent to the drain port 46 through the cathode side extraction solution bathroom piping 45 . The second cathode extraction solution 24a flows through the drain port 46 and flows through the drain port 46 into the drain pipe.

The positive electrode-side extraction solution tank 41 sends the second positive electrode extraction solution 22a, which is hypochlorous acid water containing mainly HClO with high sterilizing power extracted from the second positive electrode-side channel 25, to the mist spray device 44. It is a temporary storage tank until it is liquefied. The positive electrode side extraction solution tank 41 is connected to a mist spraying device 44 via a positive electrode side extraction solution bathroom piping 43 .

The cathode-side extraction solution tank 42 sends the second cathode extraction solution 24 a , which is hypochlorous acid water containing NaClO and NaOH with high detergency extracted from the second cathode-side channel 26 , to the drain port 46 . It is a temporary storage tank until it is liquefied. The cathode-side extraction solution tank 42 is connected to a drain port 46 via a cathode-side extraction solution bathroom pipe 45 .

The positive electrode side extraction solution bathroom pipe 43 is a pipe for sending liquid from the positive electrode side extraction solution tank 41 to the mist spray device 44 . It is installed behind the wall and ceiling of the bathroom and connected to a mist spraying device 44 installed on the ceiling.

The cathode-side extraction solution bathroom pipe 45 is a pipe for sending liquid from the cathode-side extraction solution tank 42 to the drain port 46 . It is installed behind the wall and floor of the bathroom and connected to the drain port 46. - 特許庁

The mist spraying device 44 is a device for spraying hypochlorous acid water in the form of mist in the bathroom space. More specifically, the mist spraying device 44 finely sprays the second positive electrode extraction solution 22a, which is hypochlorous acid water, transported from the positive electrode side extraction solution tank 41 through the positive electrode side extraction solution bathroom piping 43. It is a device that emits a fine mist. The mist spraying device 44 is installed so that a spraying part protrudes from the ceiling toward the bathroom so that mist can be sprayed from the ceiling of the bathroom to the entire bathroom. The mist spraying method includes a two-fluid spraying method that uses compressed air to atomize the mist, an ultrasonic method that uses an ultrasonic element to atomize a fine mist of 10 μm or less, or a solution that is released from a rotating body and crushed. and a crushing spray method in which a fine mist of 1 μm or less is sprayed.

The drain port 46 is a connection port for connecting with a drain pipe for discharging water or dirt generated in the bathroom space to the outside of the bathroom space. The second cathode extraction solution 24a is conveyed from the cathode side extraction solution tank 42 to the drain port 46 through the cathode side extraction solution bathroom pipe 45, and hypochlorous acid water containing NaClO and NaOH with high detergency. The drain port 46 and the drain pipe connected to the drain port 46 can be washed with the second cathode extraction solution 24a.

As described above, according to the space sterilization system 40 using the hypochlorous acid water supply device 1 according to the second embodiment, the following effects can be obtained.

(6) The spatial sterilization system 40 is connected to the hypochlorous acid water supply device 1 and the second positive electrode side channel 25, and the hypochlorous acid water sent out from the second positive electrode side channel 25. and a mist spraying device 44 that emits hypochlorous acid water mist into a predetermined space. According to such a configuration, even if the hypochlorous acid water mist delivered from the second positive electrode side channel 25 is discharged into the predetermined space, residual components remaining in the predetermined space are suppressed. In other words, since the hypochlorous acid water delivered from the second positive electrode side channel 25 is hypochlorous acid water in which residual components generated by the electrolysis of salt water are reduced, when sterilizing a predetermined space, It is possible to suppress the occurrence of metal corrosion due to residual components while maintaining the sterilization performance.

(7) In the space sterilization system 40, the bathroom space is provided with a drain port 46 for discharging water generated in the bathroom space, and the second cathode-side channel 26 is connected to the drain port 46 in communication. , the hypochlorous acid water discharged from the second cathode-side channel 26 can be introduced into the drain port 46 . By doing so, hypochlorous acid with high detergency containing an alkaline solution in which cations that cause residual components are concentrated is extracted from the hypochlorous acid water delivered from the second negative electrode side channel 26. Since water is passed through the drain port 46 (and the drain pipe connected to the drain port 46), the drain pipe can be cleaned with the alkaline solution.

Although the present invention has been described above based on the embodiments, the present invention is by no means limited to the above-described embodiments, and various modifications and improvements are possible without departing from the scope of the present invention. can be easily guessed.

The hypochlorous acid water supply device according to the present invention can continuously supply hypochlorous acid water with reduced residual components contained in hypochlorous acid water mainly composed of HClO generated by electrolysis of salt water. It is a device that uses hypochlorous acid water to spray a mist to eliminate mold and bacteria in the bathroom space while suppressing corrosion of metals and other materials used in the bathroom. It is a useful tool that enables

1 Hypochlorous acid water supply device 2 Hypochlorous acid water generation unit 3 Hypochlorous acid water treatment unit 4 First positive electrode 5 First negative electrode 6 Spacer between first negative and positive electrodes 7a Packing for first positive electrode 7b Second 1 negative electrode packing 8a first positive electrode tank housing side surface 8b first negative electrode tank housing side surface 9 first negative electrode solution supply port 9a first negative electrode supply solution 10 first positive electrode solution extraction port 10a One positive electrode extracting solution 11 First negative electrode solution extracting port 11a First negative electrode extracting solution 12 First channel between negative and positive electrodes 12a First channel hole between negative and positive electrodes 13 Electrolytic power supply 14 Second positive electrode 15 Second negative Electrode 16 Diaphragm 17 Second positive electrode side spacer 18 Second negative electrode side spacer 19a Second positive electrode packing 19b Second negative electrode packing 20a Second positive electrode side tank housing side 20b Second negative electrode side tank housing Side 21 Second positive electrode solution supply port 21a Second positive electrode supply solution 22 Second positive electrode solution extraction port 22a Second positive electrode extraction solution 23 Second negative electrode solution supply port 23a Second negative electrode supply solution 24 Second negative electrode Electrode solution extraction port 24a Second negative electrode extraction solution 25 Second positive electrode side channel 25a Second positive electrode side channel hole 26 Second negative electrode side channel 26a Second negative electrode side channel hole 27 Electrodialysis power supply 28 Positive electrode side connection tube 29 Positive electrode side supply pump 30 Negative electrode side connection tube 31 Negative electrode side supply pump 40 Space sterilization system 41 Positive electrode side extraction solution tank 42 Positive electrode side extraction solution tank 43 Positive electrode side extraction solution bathroom piping 44 Mist spray device 45 Cathode side extraction solution bathroom piping 46 Drain port

Claims (7)

a hypochlorous acid water generating unit for continuously electrolytically generating hypochlorous acid water by energizing between the pair of first negative and positive electrodes from salt water supplied in the meandering membrane-free electrolytic flow path;
The hypochlorous acid water supplied from the hypochlorous acid water generation unit to each of the meandering diaphragm electrolysis channels is continuously processed by energizing between the pair of second negative and positive electrodes. an acid water treatment unit;
with
A hypochlorous acid water supply device for supplying to the outside hypochlorous acid water sent from an electrolysis channel on the positive electrode side of the hypochlorous acid water treatment unit. The non-diaphragm electrolytic flow path is provided between a planar first positive electrode, a planar first negative electrode facing the first positive electrode, and between the first positive electrode and the first negative electrode. and a spacer member;
2. The pair of first cathode and cathode electrodes according to claim 1, wherein the pair of first anode and cathode electrodes are formed in a meandering shape by exposing the first anode and the first cathode to the non-diaphragm electrolytic flow path by the spacer member. Hypochlorous acid water supply device. The diaphragm-equipped electrolysis channel includes a meandering first channel in which a second positive electrode is exposed and extends along the channel, and is arranged in parallel so as to face the first channel. A meandering second flow path exposed and extending along the flow path, and a cation contained in a solution flowing through the flow path separated from the first flow path and the second flow path. and a permeable diaphragm,
The pair of second negative and positive electrodes exposes the second positive electrode to the first channel by the first spacer member, and exposes the second negative electrode to the second channel by the second spacer member. It is configured in a meandering shape by
3. The method according to claim 2, wherein the hypochlorous acid water supplied from the hypochlorous acid water generating unit is configured to flow in the same direction through the first flow path and the second flow path. The hypochlorous acid water supply device described. The planar second positive electrode, the planar diaphragm facing the second positive electrode, and the planar diaphragm provided between the second positive electrode and the diaphragm, along the flow path and in the first flow path and the first spacer member exposing the second positive electrode and the diaphragm to the
The first channel is composed of the second positive electrode and the diaphragm exposed along the channel, and the first spacer member,
the planar second cathode, the planar diaphragm facing the second cathode, and the second cathode provided between the second cathode and the diaphragm, the second spacer member exposing the second cathode and the diaphragm inside,
4. The hypochlorous acid according to claim 3, wherein the second channel comprises the second cathode and the diaphragm exposed along the channel, and the second spacer member. water supply. provided in a channel that communicates and connects the hypochlorous acid water generation unit and the hypochlorous acid water treatment unit,
A supply pump for supplying the hypochlorous acid water from the hypochlorous acid water generation unit to the diaphragm electrolysis flow path,
5. The supply pump according to any one of claims 1 to 4, wherein the hypochlorous acid water from the hypochlorous acid water generation unit is supplied to the first channel and the second channel at a constant flow rate. or the hypochlorous acid water supply device according to claim 1. The hypochlorous acid water supply device according to any one of claims 1 to 5,
a sterilization device that is connected in communication with the first flow path and releases hypochlorous acid water mist into a predetermined space using the hypochlorous acid water sent from the first flow path;
A spatial sterilization system characterized by comprising: The predetermined space is provided with a drain pipe for discharging water generated in the predetermined space,
7. The second flow path is connected to the drainage pipe, and is configured so that the hypochlorous acid water sent out from the second flow path can be introduced into the drainage pipe. Space disinfection system as described.

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