JP6128073B2 - Hydrogen-containing water generator and bathing equipment - Google Patents

Description

  The present invention relates to a technique for obtaining water containing hydrogen from raw water such as tap water.

  As a technique for generating water containing hydrogen (hydrogen-containing water) from tap water, for example, an ion exchange membrane is provided in an electrolytic cell sandwiched between a pair of electrodes of an anode and a cathode, and hydrogen-containing electrolyzed water is obtained by electrolysis. The technique to obtain is described (for example, patent document 1).

JP 2010-284504 A

  The technique described in Patent Document 1 includes an anode and a cathode in an electrolytic cell, and supplies raw water into the electrolytic cell to generate hydrogen-containing water. The technique described in Patent Document 1 uses an electrolytic cell installed in a bathtub or a tank for storing drinking water. In recent years, an apparatus for generating hydrogen-containing water at a low voltage has been desired. When the diaphragm was a neutral membrane, the conditions for efficiently incorporating hydrogen into the raw water were unknown.

  An object of the present invention is to improve the efficiency of dissolving hydrogen in raw water when generating hydrogen-containing water containing hydrogen when the diaphragm is a neutral membrane.

  As one aspect of the hydrogen-containing water generating apparatus of the present invention is a cylindrical conductor, an anode having a plurality of openings on the side, an insulator provided on the outer periphery of the anode and in contact with the anode, A cylindrical conductor that is provided on an outer peripheral portion of the insulator and is in contact with the insulator, and includes a cathode having a plurality of openings on a side portion, and the insulator is a neutral film, There are a plurality of openings, and the number of openings in the insulator is 30 or more and 300 or less per 25.4 mm square.

  As a desirable mode of the present invention, the number of openings in the insulator is preferably 100 or more and 300 or less per 25.4 mm square.

  As a desirable mode of the present invention, it is preferable that the size of the gap between the anode and the cathode is 0.1 mm or more and 1 mm or less.

  As a desirable mode of the present invention, it is preferable that the size of the gap between the anode and the cathode is equal to the thickness of the insulator.

  As a desirable mode of the present invention, it is preferable that the anode, the insulator, and the cathode are cylindrical.

  As a desirable aspect of the present invention, a bathing facility equipped with a hydrogen-containing water generator is preferable.

  The present invention can improve the efficiency of dissolving hydrogen in raw water when generating hydrogen-containing water containing hydrogen.

FIG. 1 is a perspective view showing a hydrogen-containing water generating electrode according to this embodiment. FIG. 2 is a cross-sectional view showing the hydrogen-containing water generating apparatus according to this embodiment. FIG. 3 is a diagram illustrating a usage mode of the hydrogen-containing water generating electrode according to the present embodiment. FIG. 4 is a side view showing the hydrogen-containing water generating electrode according to this embodiment. FIG. 5 is a view showing a cross section of the hydrogen-containing water generating electrode according to the present embodiment, taken along a plane including the central axis. 6 is a cross-sectional view taken along the line AA in FIG. FIG. 7 is an enlarged view of a part of FIG. FIG. 8 is a side view showing a modification of the hydrogen-containing water generating electrode. FIG. 9 is an enlarged view showing a part of the anode and the cathode. FIG. 10 is an enlarged view of the openings of the anode and the cathode. 11 is a cross-sectional view taken along line BB in FIG. FIG. 12 is an enlarged view showing a part of the insulator. FIG. 13 is a diagram showing one step in the method for producing the hydrogen-containing water generating electrode according to the present embodiment. FIG. 14 is a diagram showing evaluation results for each type of diaphragm between the anode and the cathode of the hydrogen-containing water generating electrode. FIG. 15 is a diagram showing evaluation results for each type of diaphragm between the anode and the cathode of the hydrogen-containing water generating electrode.

  DESCRIPTION OF EMBODIMENTS Embodiments (embodiments) for carrying out the present invention will be described in detail with reference to the drawings. First, an electrode used for generating hydrogen-containing water will be described.

<Electrode for generating hydrogen-containing water>
FIG. 1 is a perspective view showing a hydrogen-containing water generating electrode according to this embodiment. The hydrogen-containing water generating electrode 10 generates hydrogen-containing water, which is water containing hydrogen, from raw water such as tap water by utilizing the electrolysis action of water. Hydrogen-containing water is water that exhibits alkalinity. As shown in FIG. 1, the hydrogen-containing water generating electrode 10 includes an anode 11, a cathode 12, and an insulator 13. The anode 11 and the cathode 12 are both cylindrical conductors. In the present embodiment, the shapes of the anode 11 and the cathode 12 are both cylindrical, but are not limited thereto, but are preferably cylindrical. The insulator 13 is provided on the outer peripheral portion of the anode 11 and is in contact with the anode 11. The cathode 12 is provided on the outer periphery of the insulator 13 and is in contact with the insulator 13. That is, the insulator 13 is disposed between the anode 11 and the cathode 12 provided outside the anode 11 and is in contact with the anode 11 and the cathode 12. The anode 11, the cathode 12, and the insulator 13 are all net-like members. In the present embodiment, the insulator 13 is in contact with the anode 11 and the cathode 12, but does not necessarily have to be in contact.

  The anode 11 is electrically connected to an anode power supply member 14 which is a rod-shaped conductor. The cathode 12 is electrically connected to a cathode power supply member 15 which is a rod-shaped conductor. The anode power supply member 14 is electrically connected to the anode of a power source (DC power source) 20. The cathode power supply member 15 is electrically connected to the cathode of the power source 20. With such a structure, the anode 11 is electrically connected to the anode of the power source 20 via the anode power supply member 14, and the cathode 12 is electrically connected to the cathode of the power source 20 via the cathode power supply member 15. Is done.

  In the present embodiment, the hydrogen-containing water generating electrode 10 is provided with an anode support member having the same shape as the anode power supply member 14 on the side opposite to the side where the anode power supply member 14 is attached. Also good. The hydrogen-containing water generating electrode 10 may be provided with a cathode support member having the same shape as the cathode power supply member 15 on the side opposite to the side on which the cathode power supply member 15 is attached. The anode support member and the cathode support member are made of the same material as the anode power supply member 14 and the cathode power supply member 15, but are not limited thereto.

  As shown in FIG. 1, the hydrogen-containing water generating electrode 10, more specifically, the anode 11 and the cathode 12 have end side openings 10 HA and 10 HB as openings at both ends. . The hydrogen-containing water generating electrode 10 may not have the end-side openings 10HA and 10HB, and has the end-side opening 10HA or the end-side opening 10HB at least at one end. May be.

  The anode 11 has a slit 11SL that extends in the longitudinal direction, that is, the direction in which the anode 11 that is a cylindrical member extends. The cathode 12 has a slit 12SL that extends in the longitudinal direction, that is, the direction in which the cathode 12 that is a cylindrical member extends. As shown in FIG. 1, the hydrogen-containing water generating electrode 10 is provided with a restraining member 40 between the cathode power supply member 15 and the cathode support member 19 and on the outer side of the cathode 12. The restraining member 40 closes the slit 11SL of the anode 11 and the slit 12SL of the cathode 12, and restrains the cathode 12, the insulator 13, and the anode 11 from the circumferential direction of the cathode 12 and the anode 11. Next, how the hydrogen-containing water generating electrode 10 is used will be described.

  FIG. 2 is a cross-sectional view showing the hydrogen-containing water generating apparatus according to this embodiment. FIG. 3 is a diagram illustrating a usage mode of the hydrogen-containing water generating electrode according to the present embodiment. As shown in FIG. 2, the hydrogen-containing water generating apparatus 1 has a cylindrical shape surrounding the lower base 51 and the upper base 52 that fix the above-described hydrogen-containing water generating electrode 10 and the hydrogen-containing water generating electrode 10. The electrolytic cell 53 is provided. The lower base 51 allows the hydrogen-containing water generating electrode 10 to pass through the anode power supply member 14 and the cathode power supply member 15 by allowing the anode power supply member 14 and the cathode power supply member 15 to penetrate in a watertight state. Fix it. Thereby, the hydrogen-containing water generating apparatus 1 can supply power to the hydrogen-containing water generating electrode 10 from the outside of the electrolytic cell 53 via the anode power supply member 14 and the cathode power supply member 15.

  In the present embodiment, the upper base 52 includes a cylindrical support member 54, and the hydrogen-containing water generating electrode 10 is fixed via the cylindrical support member 54. The upper base 52 may directly fix the hydrogen-containing water generating electrode 10 similarly to the lower base 51.

  The electrolytic bath 53 includes an inflow pipe 55 having an inflow hole HH1 into which raw water flows and an outflow pipe 56 having a discharge hole HH2 through which treated water that has passed through the hydrogen-containing water generating electrode 10 is discharged. As shown in FIG. 2, the inflow hole HH <b> 1 is disposed at a position that does not overlap with the hydrogen-containing water generation electrode 10. Similarly, the discharge hole HH2 is arranged at a position that does not overlap with the hydrogen-containing water generation electrode 10. With this structure, the raw water flowing in from the inflow hole HH1 has a local distribution on the hydrogen-containing water generating electrode 10 and is unlikely to collide, thereby enabling uniform electrolysis. Similarly, the treated water discharged from the discharge hole HH2 has a local distribution on the hydrogen-containing water generating electrode 10 and is unlikely to generate turbulent flow, thus enabling uniform electrolysis. For this reason, the adhesion state of the scale to the hydrogen-containing water generating electrode 10 is made uniform, and the life of the hydrogen-containing water generating electrode 10 is extended.

As shown in FIG. 2, the hydrogen-containing water generator 1 more preferably includes a deaeration valve 112 and a deaeration hole 111. The deaeration valve 112 is fixed to the electrolytic cell 53 with a support member 57 having a hole through which oxygen passes above the inside of the cylinder of the anode 11. The anode 11, the insulator 13, and the cathode 12 are cylindrical, and the hydrogen-containing water generator 1 selectively degass oxygen gas (O ₂ ) generated inside the cylinder surrounded by the anode 11 during electrolysis. 112 can be excluded. The hydrogen-containing water generating apparatus 1 allows the insulator 13 to move to the cathode 12 side through the hydrogen ions H ⁺ ionized at the anode 11, and bubbles of hydrogen gas (H ₂ ) are formed on the outer peripheral side of the cathode 13. Generated.

  When a predetermined voltage (DC voltage) is applied from the power source 20 between the anode 11 and the cathode 12 of the hydrogen-containing water generating electrode 10, the hydrogen-containing water generating device 1 in the present embodiment The reaction of formula (1) occurs.

2H ₂ O → O ₂ + 4H ⁺ + 4e ⁻ (1)

  Further, in the hydrogen-containing water generating apparatus 1 in the present embodiment, when a predetermined voltage (DC voltage) is applied from the power source 20 between the anode 11 and the cathode 12 of the hydrogen-containing water generating electrode 10, The reaction of the following formula (2) occurs.

4H ⁺ + 4e ⁻ → 2H ₂ (2)

  In the hydrogen-containing water generating apparatus 1 according to the present embodiment, when a predetermined voltage (DC voltage) is applied from the power source 20 between the anode 11 and the cathode 12 of the hydrogen-containing water generating electrode 10, the anode 11 and the cathode 13. In the whole, the reaction of the following formula (3) occurs.

2H ₂ O → O ₂ + 2H ₂ (3)

As described above, in the hydrogen-containing water generating apparatus 1 according to the present embodiment, the generation of acidic waste water is suppressed, and the hydrogen-containing water flowing out from the discharge hole HH2 is neutral, for example, about pH 7 to 7.5. Thus, the ionized hydrogen ions H ⁺ generated at the anode 11 pass through the insulator 13 and gather on the cathode 12 side, and bubbles of hydrogen gas (H ₂ ) are generated at the cathode 12. These bubbles are minute bubbles having a diameter of nanometer order. . Oxygen gas (O ₂ ) gathers as bubbles inside the cylindrical anode 11, moves along the inside of the anode 11, and moves from the anode 11 to the electrolytic cell 53 through the deaeration valve 112 and the deaeration hole 111. Released to the outside.

  The raw water W is, for example, warm water stored in a bathtub, drinking water stored in a drinking water tank, or cleaning water stored in a cleaning water tank. An example of warm water in which raw water W is stored in a bathtub will be described in detail with reference to FIG. As shown in FIG. 3, the bathing facility 120 includes the hydrogen-containing water generating device 1, and circulates the raw water W stored in the bathtub 101 via the circulation path 102, and the hot water in which the raw water W is stored in the bathtub 101. To be mixed with treated water.

The circulation path 102 includes a drawing hole 105 for the raw water W stored in the bathtub 101, a flow path 106, a pump 108, a flow sensor 109, and a flow path 107. The raw water W is circulated in the order of the drawing hole 105, the flow path 106, the pump 108, the hydrogen-containing water generating device 1, the flow path 107, and the bathtub 101 by the discharge of the pump 108. The above-described power source 20 controlled by the control unit 104 is connected to the hydrogen-containing water generator 1. When the flow sensor 109 detects a predetermined flow rate of liquid by driving the pump 108, the control unit 104 supplies a predetermined voltage (DC voltage) from the power source 20 between the anode 11 and the cathode 12 of the hydrogen-containing water generating electrode 10. Is applied. Thereby, the treated water flowing into the bathtub 101 from the flow path 107 includes hydrogen-containing water containing hydrogen (H ₂ ).

  FIG. 4 is a side view showing the hydrogen-containing water generating electrode according to this embodiment. FIG. 4 shows a state in which a part of the cathode 12 and the insulator 13 of the hydrogen-containing water generating electrode 10 is removed. FIG. 5 is a view showing a cross section of the hydrogen-containing water generating electrode according to the present embodiment, taken along a plane including the central axis. 6 is a cross-sectional view taken along the line AA in FIG. FIG. 7 is an enlarged view of a part of FIG. The central axis Zt is a direction parallel to a direction (referred to as a longitudinal direction) E in which the cylindrical anode 11 and the cathode 12 in the present embodiment extend (referred to as a longitudinal direction as appropriate). The central axis Zt is an axis passing through the center (center of gravity) in the cross section of the anode 11 and the cathode 12 orthogonal to the central axis Zt.

  As shown in FIG. 4, the anode 11 has a plurality of openings 11H on the side, and the cathode 12 has a plurality of openings 12H on the side. The plurality of openings 11 </ b> H that the anode 11 has penetrates the side of the anode 11 in the thickness direction of the anode 11. The plurality of openings 12 </ b> H that the cathode 12 has penetrates the side of the cathode 12 in the thickness direction of the cathode 12. In this embodiment, the anode 11 and the cathode 12 are made of a conductor. In this embodiment, titanium (Ti) is plated with platinum (Pt). The plating may be, for example, platinum (Pt) -iridium (Ir) plating. In the present embodiment, the titanium is pure titanium. The anode 11 and the cathode 12 are not limited to those obtained by plating platinum on titanium, but are preferably materials that do not dissolve in the raw water W (for example, vanadium (V)). In the present embodiment, both the anode 11 and the cathode 12 are plated, but only the anode 11 may be plated and the cathode 12 may not be plated. By doing in this way, the manufacturing cost of the electrode 10 for hydrogen containing water production | generation can be reduced.

  As shown in FIG. 5, the insulator 13 interposed between the anode 11, the outer side portion (outer portion) 11 So of the anode 11, and the inner side portion (inner side portion) 12 Si of the cathode 12 includes the anode 11. The outer portion 11So and the inner portion 12Si of the cathode 12 are in contact with each other. The insulator 13 has a plurality of openings 13H. The opening 13H penetrates the insulator 13 in the thickness direction. As the insulator 13, for example, a net knitted with fibers of an insulating material (for example, resin) can be used. In the present embodiment, the insulator 13 is a net-like member that is electrically neutral. For this reason, hydrogen-containing water can be generated at a lower voltage compared to the ion exchange membrane, and power consumption can be suppressed.

  In the case where a net knitted with insulating fibers is used for the insulator 13, the thickness of the insulator 13 is set to about 0.1 mm to 1 mm. As shown in FIG. 6, in this embodiment, the insulator 13 provided between the outer portion (corresponding to the outer peripheral portion) 11So of the anode 11 and the inner portion (corresponding to the inner peripheral portion) 12Si of the anode 12 is An end portion is taken out from the slit 12SL of the cathode 12 to the outer side (corresponding to the outer peripheral portion) 12So side of the cathode 12. The end of the insulator 13 may be taken out from the slit 11SL of the anode 11 to the inner side (corresponding to the inner periphery) 11Si side of the anode 11. Next, the influence of the size t of the gap formed between the anode 11 and the cathode 12 (referred to as an interelectrode gap as appropriate) shown in FIG. 7 will be described. The size t between the electrode gaps is the distance between the outer portion (outer peripheral portion) 11So of the anode 11 and the inner portion (inner peripheral portion) 12Si of the cathode 12.

  In the present embodiment, the size t between the electrode gaps is preferably 0.1 mm or more and 1 mm or less. By setting the size t between the electrodes to the above-described range, the potential difference between the voltages applied to the anode 11 and the cathode 12 when the hydrogen-containing water generating electrode 10 generates hydrogen-containing water is relatively small. However, the hydrogen-containing water generating electrode 10 can generate a sufficient amount of hydrogen. If the size t between the electrodes is in the above-described range, even if the voltage applied to the hydrogen-containing water generating electrode 10 is relatively low, the hydrogen-containing water generating electrode 10 generates a sufficient amount of hydrogen as raw water. It is possible to produce hydrogen-containing water in which a lot of hydrogen is dissolved. Further, if the amount of hydrogen dissolved in the hydrogen-containing water is the same, the hydrogen-containing water generating electrode 10 can suppress power consumption.

  When the size t between the electrode gaps is large, the voltage applied to the hydrogen-containing water generating electrode 10 is increased in order to dissolve a sufficient amount of hydrogen in the raw water. By setting the size t between the electrodes to 1 mm or less, preferably 0.6 mm or less, even if the voltage applied to the hydrogen-containing water generating electrode 10 is about 48 V, for example, a sufficient amount of hydrogen Can be dissolved in raw water. Insulation between the anode 11 and the cathode 12 by the insulator 13 interposed between the anode 11 and the cathode 12 is achieved by setting the size t between the electrodes to be 0.1 mm or more, preferably 0.2 mm or more. Enough can be secured. As a result, the hydrogen-containing water generating electrode 10 can stably exhibit performance. Further, as described above, when resin is used as the insulator 13, the size t between the electrode gaps is set to 0.1 mm or more, preferably 0.2 mm or more, thereby suppressing a decrease in durability of the insulator 13. You can also In the present embodiment, the insulator 13 interposed between the anode 11 and the cathode 12 contacts both. For this reason, the size t between the electrode gaps is determined by the thickness of the insulator 13.

  Further, when the insulator 13 is interposed between the anode 11 and the cathode 12 and brought into contact with the both, the insulator 13 makes the distance between the anode 11 and the cathode 12 constant over the entire hydrogen-containing water generating electrode 10. It becomes easy. As a result, the hydrogen-containing water generating electrode 10 suppresses variations in electrical resistance between the anode 11 and the cathode 12 and suppresses variations in current density, so that hydrogen bubbles are uniformly generated from the whole. be able to. It is preferable to make the size t between the electrode gaps equal to the thickness of the insulator 13 because the insulator 13 can be easily brought into contact with both the anode 11 and the cathode 12. Next, the anode power supply member 14 and the cathode power supply member 15 will be described.

  As shown in FIG. 4, the anode power supply member 14 is a rod-shaped conductor that extends from the first end (one end) 11T1 of the anode 11 toward the second end (the other end) 11T2. is there. As shown in FIGS. 5 and 6, the anode power supply member 14 is such that a portion shorter than half L / 2 of the dimension L of the anode 11 in the extending direction (longitudinal direction) E of the anode 11 is the inner portion 11Si of the anode 11. Attached to. The cathode power supply member 15 is a rod-shaped conductor extending from the first end 12T1 of the cathode 12 toward the second end 12T2. As shown in FIGS. 5 and 6, in the cathode power supply member 15, a portion shorter than half L / 2 of the dimension L of the cathode 12 in the direction (longitudinal direction) E in which the cathode 12 extends has an outer portion 12So of the cathode 12. Attached to. The length of the portion attached to the anode 11 of the anode power supply member 14 and the length of the portion attached to the cathode 12 of the cathode power supply member 15 are both LS. In the present embodiment, LS <L / 2.

  In the present embodiment, the anode power supply member 14 and the cathode power supply member 15 are members obtained by plating platinum on titanium, similarly to the anode 11 and the cathode 12. Similarly to the anode 11 and the cathode 12, the anode power supply member 14 and the cathode power supply member 15 are not limited to titanium plated with platinum, but are preferably materials that do not dissolve in the raw water W. . The anode power supply member 14 and the cathode power supply member 15 are joined and electrically connected to the anode 11 and the cathode 12, for example, by a joining means such as welding. The anode power supply member 14 and the cathode power supply member 15 are attached to the anode 11 and the cathode 12, respectively, by a joining means such as welding.

  The plating applied to the anode power supply member 14 and the cathode power supply member 15 may be, for example, platinum (Pt) -iridium (Ir) plating. In the present embodiment, the cathode 12 may not be plated, but in this case, the cathode power supply member 15 may not be plated.

  In the present embodiment, as shown in FIG. 5, the anode power supply member 14 and the cathode power supply member 15 are electrically joined to the anode 11 and the cathode 12 at a plurality of joint portions CP, respectively, by spot welding. Has been. The joining of the anode power supply member 14 and the cathode power supply member 15 is not limited to spot welding.

  The plurality of joint portions CP are provided so as not to be partially biased in the longitudinal direction of the anode power supply member 14 and the cathode power supply member 15. By doing in this way, the anode power supply member 14 and the cathode power supply member 15 can supply power from the entire longitudinal direction E thereof. The cathode power supply member 15 and the cathode support member 19 are separate members, and a portion shorter than half L / 2 of the dimension L of the cathode 12 in the extending direction (longitudinal direction) E of the cathode 12 is an outer portion of the cathode 12. It is attached to 12So. For this reason, in the outer portion 12So of the cathode 12, a portion (gap) where these do not exist is formed between the cathode power supply member 15 and the cathode support member 19. In the hydrogen-containing water generating electrode 10, the restraining member 40 can be attached to a portion of the outer portion 12So of the cathode 12 where the cathode power supply member 15 and the cathode support member 19 are not present. Since the restraining member 40 does not interfere with the cathode power supply member 15 and the cathode support member 19, the cathode 12, the insulator 13, and the anode 11 can be restrained with an equal force over the entire outer periphery of the cathode 12.

  4 and 5, the anode power supply member 14 protrudes from the first end 11T1 of the anode 11, and the cathode power supply member 15 protrudes from the first end 12T1 of the cathode 12. Yes. By doing in this way, the anode power supply member 14 and the cathode power supply member 15 are attached to the lower base 51 to be attached at the portions protruding from the first end portions 11T1 and 12T1, as shown in FIG. be able to. As a result, the anode 11 and the cathode 12 are attached to the lower base 51 via the anode power supply member 14 and the cathode power supply member 15.

  In the present embodiment, as shown in FIG. 4, the anode power supply member 14 and the cathode power supply member 15 are provided with male screws 14S and 15S at portions protruding from the first end portions 11T1 and 12T1. The anode power supply member 14 and the cathode power supply member 15 are attached and fixed to the lower base 51 by bolts 32 and 32 screwed into the male screws 14S and 15S, respectively.

  The anode 11 is in contact with the lower base 51 at the first end 11T1 and is fixed to the lower base 51 by a bolt 32 via the anode power supply member 14. Similarly, the cathode 12 has the first end 12T1 in contact with the lower base 51, and is fixed to the lower base 51 with the bolt 32 via the cathode power supply member 15. For this reason, since the wide range of each of the anode 11 and the cathode 12 is in contact with the lower base 51, the anode 11 and the cathode 12 are stably attached to the lower base 51.

  The terminals 32 and 32, and the bolts 33 and 33 screwed into the male screws 14S and 15S, respectively, are terminals for electrically connecting the anode power supply member 14 and the wiring, and the cathode power supply member 15 and the wiring. Fix the terminal to electrically connect. With such a structure, electric power is applied to the anode 11 and the cathode 12 through the terminal 34, the anode power supply member 14, and the cathode power supply member 15.

  FIG. 8 is a side view showing a modification of the hydrogen-containing water generating electrode. In the hydrogen-containing water generating electrode 10b shown in FIG. 8, the length of the portion attached to the anode 11 of the anode power supply member 14 and the length of the portion attached to the cathode 12 of the cathode power supply member 15 are both LS. is there. In a modification of the present embodiment, LS> L / 2. The same effect can be obtained in the modified example of the hydrogen-containing water generating electrode. Next, the openings 11H, 12H, and 13H included in the anode 11, the cathode 12, and the insulator 13 will be described.

  FIG. 9 is an enlarged view showing a part of the anode and the cathode. FIG. 10 is an enlarged view of the openings of the anode and the cathode. 11 is a cross-sectional view taken along line BB in FIG. FIG. 12 is an enlarged view showing a part of the insulator. The anode 11 and the cathode 12 are net members in which a plurality of linear portions (linear portions) 16 intersect. The portions surrounded by the plurality of linear portions 16 become the openings 11H and 12H of the anode 11 and the cathode 12. In the present embodiment, the openings 11H and 12H included in the anode 11 and the cathode 12 have a rhombus shape. In the openings 11H and 12H, one diagonal line (first diagonal line) TLl is longer than the other diagonal line (second diagonal line) TLs. In the openings 11H and 12H, the angles at the top portions Pa and Pb on the first diagonal line TLl are smaller than the angles at the top portions Pc and Pd on the second diagonal line TLs.

  Since the anode 11 and the cathode 12 have a plurality of openings 11H and 12H, electric lines of force can be turned inward and outward through the openings 11H and 12H. For this reason, since both the anode 11 and the cathode 12 can be utilized for electrolysis, hydrogen can be generated efficiently. In addition, the cathode 12 can reduce the wetting angle of the hydrogen bubbles generated by the opening 12H surrounded by the linear portion 16, so that the hydrogen bubbles can be released in a small state. That is, the adsorption force generated between the generated hydrogen and the surface of the cathode 12 becomes close to point contact and the surface tension is suppressed. As a result, the cathode 12 reduces the hydrogen bubbles in a small state. The hydrogen-containing water in which many hydrogen bubbles are dissolved can be generated by being separated.

  In the present embodiment, the linear portions 16 of the anode 11 and the cathode 12 have a rectangular cross section (square in the example of FIG. 11) as shown in FIG. The cathode 12 can further reduce the wetting angle of the hydrogen bubbles and suppress the surface tension by the corner portions 16T of the linear portion 16, so that the hydrogen bubbles can be released in a smaller state. Therefore, the cathode 12 can generate hydrogen water in which smaller hydrogen bubbles are dissolved. Further, since the cathode 12 has the linear portion 16 having a rectangular cross section, the surface area that can be used for generation of hydrogen can be increased. By these actions, the cathode 12 improves the efficiency of dissolving hydrogen in the raw water W.

  In the present embodiment, as shown in FIG. 10, in the openings 11H and 12H, the first diagonal line TLl is directed in the direction in which the anode 11 and the cathode 12 extend, that is, the longitudinal direction E. The second diagonal line TLs is directed in the circumferential direction C of the cylindrical anode 11 and cathode 12. As shown in FIG. 1, the anode 11 and the cathode 12 have end-side openings 10HA and 10HB on both sides in the longitudinal direction E. Oxygen bubbles generated inside the anode 11 rise from the end opening 10HA side to the 10HB side in the interior 10H of the hydrogen-containing water generating electrode 10 shown in FIG. . The oxygen in the deaeration valve 112 is released to the outside from the deaeration hole 111. At this time, since the longitudinal direction of the opening 11H of the anode 11 is aligned in the direction in which the oxygen bubbles move, the oxygen bubbles easily move to the end side openings 10HA and 10HB. As a result, the hydrogen-containing water generating electrode 10 can efficiently release oxygen bubbles to the outside. In addition, the opening 11H of the anode 11 has an acute angle between the top portions Pa and Pb on the first diagonal line TL1, so that the contact area between the oxygen bubbles and the linear portion 16 can be reduced. As a result, since the oxygen bubbles are easily detached from the linear portion 16, the hydrogen-containing water generating electrode 10 can efficiently release the oxygen bubbles to the outside. Moreover, since the linear part 16 has the corner | angular part 16T, the anode 11 can further reduce the wetting angle of the bubble of oxygen by this corner | angular part 16T, and can suppress surface tension. As a result, the anode 11 can quickly remove oxygen bubbles from the linear portion 16 and move them to the end side openings 10HA and 10HB. For this reason, the hydrogen-containing water generating electrode 10 can efficiently release oxygen bubbles to the outside. Further, in the process in which the oxygen bubbles move along the inside of the anode 11, oxygen bubbles newly grown on the anode 11 side are taken in and the oxygen bubbles grow. For this reason, the area where oxygen bubbles and the raw water W come into contact with each other can be reduced, and the dissolution of oxygen in the raw water W can be suppressed.

  As shown in FIG. 12, the insulator 13 is a net-like member in which a plurality of linear members 17 are intersected and a portion surrounded by the linear members 17 is an opening 13H. The opening 13H has a rectangular shape (in this embodiment, a square shape). The length of one side of the opening 13H is La, and the length of the side adjacent to this side is Lb. In the present embodiment, since the opening 13H has a square shape, La = Lb. A side having a length La is parallel to the longitudinal direction E of the anode 11 and the cathode 12, and a side having a length Lb is parallel to the circumferential direction C of the cylindrical anode 11 and the cathode 12.

In the present embodiment, the opening 11H of the anode 11 and the opening 12H of the cathode 12 are larger than the opening 13H of the insulator 13. The areas of the openings 11H and 12H are L1 × Ls / 2 where the length of the first diagonal line TLl is L1 and the length of the second diagonal line TLs is Ls. The area (opening area) of the opening 13H is La × Lb. Therefore, L1 × Ls / 2> La × Lb. In the present embodiment, for example, the length Ll of the first diagonal line TLl is 6 mm and the length Ls of the second diagonal line TLs is 3 mm, so the areas of the openings 11H and 12H are 9 mm ² . The opening 13H is, for example, La = Lb = 1.06 mm. For example, the insulator 13 has 200 openings 13H arranged per 25.4 mm square. The area (opening area) of the opening 13H is 0.02 mm ² . Thus, in this embodiment, the areas of the openings 11H and 12H of the anode 11 and the cathode 12 are about 450 times the area of the opening 13H.

  In general, an ion exchange membrane has a small opening area, but the membrane is charged with anions and has cation selectivity, and although the amount of hydrogen generated and dissolved is high, the pH of hydrogen-containing water does not become neutral. .

  On the other hand, the hydrogen-containing water generating apparatus 1 according to the present embodiment is a neutral film insulator in which 30 to 300 openings 13H are arranged per 25.4 mm square of the hydrogen-containing water generating electrode 10. 13 is provided. Thereby, the hydrogen containing water production | generation apparatus 1 in this embodiment can produce | generate the neutral hydrogen containing water which improved the generation amount and dissolved amount of hydrogen.

The hydrogen-containing water generating apparatus 1 in the present embodiment includes the neutral film insulator 13 in which 30 or more openings 13H are arranged per 25.4 mm square, so that the amount of hydrogen generated and the amount of dissolved hydrogen are reduced. Can be bigger. The hydrogen-containing water generator 1 in the present embodiment includes a neutral membrane insulator 13 in which 300 or less openings 13H are arranged per 25.4 mm square, thereby ensuring the strength of the fiber, The thickness of the conductive film can be suppressed. For example, the neutral film insulator 13 in which 500 or more openings 13H are arranged per 25.4 mm square.
Since the fibers become thin, it is necessary to bundle and weave a plurality of fibers to strengthen the strength. Therefore, the neutral film insulator 13 in which 500 or more openings 13H are arranged per 25.4 mm square is increased in thickness, and a predetermined voltage (DC voltage) is supplied from the power source 20 between the anode 11 and the cathode 12. This is because it is difficult for the current to flow even if a) is applied.

  The hydrogen-containing water generating apparatus 1 according to the present embodiment includes a neutral membrane insulator 13 in which 100 to 300 openings 13H are arranged per 25.4 mm square of the hydrogen-containing water generating electrode 10. . Thereby, the hydrogen containing water production | generation apparatus 1 in this embodiment can produce | generate the neutral hydrogen containing water which has the generation amount and dissolved amount of hydrogen equivalent to an ion exchange membrane.

  When the opening 13H of the insulator 13 is larger than the openings 11H and 12H of the anode 11 and the cathode 12, the possibility that the anode 11 and the cathode 12 come into contact through the opening 13H of the insulator 13 is increased. In the hydrogen-containing water generating electrode 10, the anode 13 and the cathode 12 come into contact with each other through the opening 13 </ b> H of the insulator 13 by making the opening 13 </ b> H of the insulator 13 smaller than the openings 11 </ b> H and 12 </ b> H of the anode 11 and cathode 12. You can avoid that. Thus, even if the distance between the anode 11 and the cathode 12 is reduced, the hydrogen-containing water generating electrode 10 can avoid short circuit between the anode 11 and the cathode 12 and ensure insulation between them. For this reason, the hydrogen-containing water generating electrode 10 using the neutral film insulator 13 as the diaphragm can keep the voltage applied to the anode 11 and the cathode 12 low.

  In the present embodiment, the insulator 13 is a net-like member in which a plurality of linear members 17 are crossed. When such a net-like member is used, the insulator 13 can be deformed to some extent in the thickness direction. Therefore, when the hydrogen-containing water generating electrode 10 receives vibration or impact, the insulator 13 absorbs this. can do. Using a net-like member in which a plurality of linear members 17 are crossed as the insulator 13 is suitable for the portable hydrogen-containing water generating electrode 10 that can be moved and carried.

  In the hydrogen-containing water generating electrode 10, the opening 13 </ b> H of the insulator 13 is smaller than the opening 11 </ b> H of the anode 11 and the opening 12 </ b> H of the cathode 12. To capture large bubbles. Since the oxygen bubbles are increased, the dissolution of oxygen in the raw water W is suppressed, so that the hydrogen-containing water generating electrode 10 can generate hydrogen-containing water having a high dissolved rate of hydrogen bubbles. Further, since the buoyancy increases as the oxygen bubbles increase, the oxygen bubbles easily move inside the anode 11 and easily pass through the opening 13H. It becomes easy to discharge air bubbles from the inside.

  In addition, oxygen bubbles not captured by the linear member 17 pass through the opening 13H of the insulator 13 and draw in the hydrogen bubbles adhering to the linear portion 16 of the cathode 12 from the linear portion 16. Let go. Therefore, the hydrogen-containing water generating electrode 10 can quickly remove hydrogen bubbles generated at the cathode 12 from the cathode 12 and dissolve them in the raw water W. Next, the manufacturing method of the electrode 10 for hydrogen containing water production | generation is demonstrated.

<Method for producing electrode for producing hydrogen-containing water>
FIG. 13 is a diagram showing one step in the method for producing the hydrogen-containing water generating electrode according to the present embodiment. As shown in FIG. 13, a restraining member 40 is attached outside the cathode 12 to restrain the cathode 12, the insulator 13, and the anode 11. A plurality of restraining members 40 are attached between the cathode power supply member 15 and the cathode support member 19. For example, the binding member 40 may be made of a resin binding band, or may be made of a metal wire that has high corrosion resistance and does not dissolve in the raw water W. The cathode 12, the insulator 13, and the anode 11 are restrained by the restraining member 40, and the hydrogen-containing water generating electrode 10 is completed. The excess insulator 13T may be taken out of the cathode 12 through the closed slit 12SL. Alternatively, the insulator 13 may be cylindrical and may cover the outer periphery of the anode 11 and be fixed to the outer periphery of the anode 11 by heat shrinkage.

  The restraining member 40 applies a force in the circumferential direction to the cathode 12 and the anode 11 that are cylindrical members. For this reason, the slits 11SL and 12SL of the anode 11 and the cathode 12 are closed. The anode 11 is not only a conductor but also an elastic body, and the deformation to the extent that the slit 11SL is closed is a deformation within the elastic deformation range of the material of the anode 11. For this reason, when the slit 11SL of the anode 11 is closed, the anode 11 generates a force for opening the closed slit 11SL.

  Since the anode 11 is restrained by the restraining member 40 via the cathode 12, the above-described force generated in the anode 11 acts to press the anode 11 and the insulator 13 against the cathode 12. As a result, since the insulator 13 reliably contacts the anode 11 and the cathode 12, the gap formed between the anode 11 and the cathode 12 is accurately defined by the thickness of the insulator 13. In addition, the above-described force generated in the anode 11 suppresses the deviation between the anode 11, the insulator 13, and the cathode 12. Thus, the hydrogen-containing water generating electrode 10 according to the present embodiment can manufacture the hydrogen-containing water generating electrode 10.

  The manufacturing method of the hydrogen-containing water generating electrode according to the present embodiment does not use joining such as welding except that the power supply member is attached to the anode 11 and the cathode material 12. For this reason, by removing the restraining member 40, the hydrogen-containing water generating electrode 10 can be easily disassembled into the anode 11, the cathode 12, and the insulator 13, so that maintenance, inspection, repair, and parts replacement are possible. Is easy.

<Evaluation example>
As Example 1, nine hydrogen-containing water generating electrodes 10 were manufactured with a neutral film as the insulator 13 of the diaphragm between the anode 11 and the cathode 12. As the neutral film of Example 1, a film having 30 meshes from the center to the center of one side of a 25.4 mm square was used.

  As Example 2, nine hydrogen-containing water generating electrodes 10 were manufactured with a neutral film as the insulator 13 of the diaphragm between the anode 11 and the cathode 12. As the neutral membrane of Example 2, a membrane having 200 meshes from the center to the center of one side of a 25.4 mm square was used.

  As Comparative Example 1, nine hydrogen-containing water generating electrodes 10 were manufactured using a cation ion exchange membrane as a diaphragm insulator 13 between the anode 11 and the cathode 12.

  As Comparative Example 2, nine hydrogen-containing water generating electrodes 10 without the diaphragm insulator 13 between the anode 11 and the cathode 12 were manufactured.

  As Comparative Example 3, nine hydrogen-containing water generating electrodes 10 were manufactured as neutral membranes as the insulator 13 of the diaphragm between the anode 11 and the cathode 12. As the neutral film of Comparative Example 3, a film having 500 meshes from the center of the line on one side of 25.4 mm square was used.

  As Comparative Example 4, nine hydrogen-containing water generating electrodes 10 were manufactured with a neutral film as the insulator 13 of the diaphragm between the anode 11 and the cathode 12. As the neutral membrane of Comparative Example 4, one having a mesh number of 1000 at the center from the center of a line on one side of 25.4 mm square was used.

  In Example 1, Example 2, Comparative Example 1, Comparative Example 2, Comparative Example 3, Comparative Example 3 and Comparative Example 4, the hydrogen-containing water generating electrode 10 was dissolved in the amount of dissolved hydrogen (ppm) at a water temperature of 41 ° C. in a 120 L electrolytic vessel. It measured on the same conditions for every electrolysis time when the predetermined voltage (DC voltage) is applied from the power supply 20 between the anode 11 and the cathode 12 of the electrode 10 for hydrogen containing water production | generation. The amount of dissolved hydrogen in each of Example 1, Example 2, Comparative Example 1, Comparative Example 2, Comparative Example 3 and Comparative Example 4 is an average value of nine of each hydrogen-containing water generating electrode 10.

  Table 1 below shows the evaluation results. FIG. 14 is a diagram showing evaluation results for each type of diaphragm between the anode and the cathode of the hydrogen-containing water generating electrode.

  According to the evaluation results shown in Table 1 and FIG. 14, when the insulator is a neutral film and the opening of the insulator is 30 to 200 per 25.4 mm square, the dissolved hydrogen amount is the diaphragm. Compared to the case where there is no, it can be increased. Further, when the opening of the insulator is 200 per 25.4 mm square, the dissolved hydrogen amount can be obtained to the same extent as the ion exchange membrane.

  Next, as Example 3, nine hydrogen-containing water generating electrodes 10 were manufactured with a neutral film as the insulator 13 of the diaphragm between the anode 11 and the cathode 12. As the neutral membrane of Example 3, one having a mesh number of 100 at the center from the center of a line on one side of 25.4 mm square was used.

  As Comparative Example 5, nine hydrogen-containing water generating electrodes 10 were manufactured with a neutral film as the insulator 13 of the diaphragm between the anode 11 and the cathode 12. As the neutral film of Comparative Example 5, a film having 2000 meshes from the center of one side of a 25.4 mm square was used.

  In Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3, Comparative Example 4, Comparative Example 4 and Comparative Example 5, the hydrogen-containing water generating electrodes 10 were each placed in an electrolyzed water volume of 120 L in a water temperature of 41 ° C. The amount of dissolved hydrogen (ppm) was measured under the same conditions when the electrolysis time was 30 minutes. The amount of dissolved hydrogen in each of Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3, Comparative Example 4 and Comparative Example 5 was nine of each hydrogen-containing water generating electrode 10. Is the average value.

  Table 2 below shows the evaluation results. FIG. 15 is a diagram showing evaluation results for each type of diaphragm between the anode and the cathode of the hydrogen-containing water generating electrode. The “neutral membrane mesh number” indicates the number of meshes from the center to the center of a line on one side of a 25.4 mm square.

表２及び図１５に示した評価結果によれば、絶縁体１３は、中性膜であって、絶縁体の開口は、２５．４ｍｍ角あたり、３０個以上３００個以下である場合、溶存水素量を増やすことができる。絶縁体１３は、中性膜であって、絶縁体の開口は、２５．４ｍｍ角あたり、１００個以上３００個以下である場合、０．７ｐｐｍ（Part Per Million）以上の溶存水素量とすることができる。また、絶縁体の開口は、２５．４ｍｍ角あたり、２００個である場合、溶存水素量の向上を見込むことができる。

According to the evaluation results shown in Table 2 and FIG. 15, when the insulator 13 is a neutral film and the number of openings of the insulator is 30 to 300 per 25.4 mm square, dissolved hydrogen The amount can be increased. The insulator 13 is a neutral film, and when the opening of the insulator is 100 to 300 per 25.4 mm square, the dissolved hydrogen amount should be 0.7 ppm (Part Per Million) or more. Can do. Further, when the number of openings of the insulator is 200 per 25.4 mm square, an improvement in the amount of dissolved hydrogen can be expected.

  Although the present embodiment has been described above, the present embodiment is not limited to the above-described content. In addition, the above-described constituent elements include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in a so-called equivalent range. Furthermore, the above-described components can be appropriately combined. Furthermore, various omissions, substitutions, or changes of components can be made without departing from the scope of the present embodiment.

DESCRIPTION OF SYMBOLS 1 Hydrogen containing water production | generation apparatus 10, 10b Electrode 10HA for hydrogen containing water production | generation, 10HB End side opening part 11 Anode 11H Opening 11SL Slit 11Si Inner part 11So Outer part 11T1, 12T1 1st end part 11T2, 12T2 2nd end Part 12 Cathode 12H Opening 12SL Slit 12Si Inner part 12So Outer part 13 Insulator 13H Opening 14 Anode power supply member 15 Cathode power supply member 20 Power supply 51 Lower base 52 Upper base 53 Electrolytic tank 54 Support member 55 Inflow pipe 56 Outflow Pipe 57 Support member 101 Bath 102 Circulation path 104 Control part 105 Lead-in hole 106 Channel 107 Channel 108 Pump 109 Flow sensor 111 Deaeration hole 112 Deaeration valve W Raw water

Claims (6)

A cylindrical conductor, an anode having a plurality of openings on the side, and
An insulator provided on an outer periphery of the anode and in contact with the anode;
A cylindrical conductor provided on an outer periphery of the insulator and in contact with the insulator; a cathode having a plurality of openings on a side;
Including
The insulator is a neutral film and has a plurality of openings,
The number of openings of the insulator is 30 or more and 300 or less per 25.4 mm square.   2. The hydrogen-containing water generating device according to claim 1, wherein the number of openings of the insulator is 100 or more and 300 or less per 25.4 mm square.   The size of the clearance gap between the said anode and the said cathode is a hydrogen containing water production | generation apparatus of Claim 1 or 2 which are 0.1 mm or more and 1 mm or less.   The hydrogen-containing water generating apparatus according to claim 3, wherein a size of a gap between the anode and the cathode is equal to a thickness of the insulator.   The hydrogen-containing water generating apparatus according to any one of claims 1 to 4, wherein the anode, the insulator, and the cathode are cylindrical.   A bathing facility comprising the hydrogen-containing water generating device according to any one of claims 1 to 5.

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