JP6440387B2 - Gas dissolved water generator - Google Patents

Description

  The present invention relates to an electrolytic gas-dissolved water generator, and more particularly to a gas-dissolved water generator that generates gas-dissolved water in which a main product gas generated by electrolysis of raw water is dissolved at a high concentration.

  There are various types of gas-dissolved water generators by electrolysis of raw water, and a typical one is a type in which a direct current voltage is applied between both electrodes with the anode and cathode separated from the raw water. There is a thing (for example, patent document 1). Also, one of the types using a solid polymer electrolyte membrane is one having a structure in which an electrolytic chamber is separated into an anode chamber and a cathode chamber through a partition made of a solid polymer electrolyte membrane (for example, Patent Document 2). Although the partition type using the solid polymer electrolyte membrane can be downsized to some extent, it is not easy to downsize it to the extent that it can be used in a small container such as a cup.

  Of the gas generated by electrolysis of raw water, the gas that the user needs is called the main product gas, and the gas that is not required is called the by-product gas. It is desirable to be dissolved at as low a concentration as possible. The general household user needs gas dissolved water in which main product gas is dissolved, and gas dissolved water in which main product gas is dissolved and gas dissolved water in which byproduct gas is dissolved at the same time. It is rare to need it.

  Even if a large amount of gas-dissolved water in which the main product gas is dissolved at a high concentration is generated using a large generation device, the main product gas dissolved in the gas-dissolved water is degassed or decomposed over time, The dissolved concentration of the main product gas in the gas-dissolved water will decrease. Therefore, it is preferable to electrolyze the required amount of raw water when necessary to newly generate gas-dissolved water in which the main product gas is dissolved. For users in general households, a smaller generator is better. Usability is superior to large generators.

  Thus, as a compact generator suitable for a user at home using a solid polymer electrolyte membrane, a type in which a solid polymer electrolyte membrane is sandwiched between an anode and a cathode has been studied (for example, Patent Document 3). When electrolysis of raw water is performed using a generating apparatus having the above configuration, hydrogen water in which hydrogen gas is dissolved is generated on the cathode side, and ozone water in which ozone gas is dissolved is generated on the anode side. In order to avoid mixing of the generated hydrogen gas and ozone gas, the pot portion is divided into a water tank chamber and a reaction chamber arranged at the bottom of the water tank chamber.

Japanese Patent Laying-Open No. 2005-095808 Japanese Patent Application Laid-Open No. 07-214063 JP 2012-217868 A

  In the generating apparatus disclosed in Patent Document 3, a gas generating unit that generates hydrogen gas at the upper cathode and generates ozone gas at the lower anode is accommodated in the reaction chamber in a form extending in the horizontal direction. ing. Hydrogen gas (main reaction gas) generated in the reaction chamber reaches the water tank chamber through the central opening, and the hydrogen gas dissolves in the raw water in the process of ascending the water tank chamber.

  On the other hand, ozone gas (secondary reaction gas) generated in the reaction chamber grows into large-sized bubbles by being temporarily stored in a product gas standby chamber disposed adjacent to the reaction chamber. Thereafter, large-sized bubbles reach the water tank chamber through the communication port, and large-bubble ozone gas rises in the water tank chamber.

  However, in the production apparatus disclosed in Patent Document 3, the product gas standby chamber arranged adjacent to the periphery of the reaction chamber occupies a large area in the electrode portion. Therefore, there is a limit to ensuring a large area of the gas generating part in the electrode part. Moreover, since the area of the gas generating part extending in the horizontal direction is restricted by the horizontal cross-sectional area of the reaction chamber, it is difficult to increase the area of the gas generating part extending in the horizontal direction. As described above, the generation device disclosed in Patent Document 3 has a problem that it is difficult to increase the dissolved concentration of hydrogen gas.

  Furthermore, since the polymer film of the gas generating portion extends in the horizontal direction, the generated ozone gas stays in a film shape (in a planar shape) below the polymer film. Since the retained ozone gas prevents the raw water from coming into contact with the polymer membrane, there is a problem that the hydrogen gas generation ability is lowered.

  Therefore, the technical problem to be solved by the present invention is to provide a small-sized gas dissolved water generating apparatus that can easily generate main generated gas dissolved water in which a desired main generated gas is dissolved at a high concentration.

  In order to solve the above technical problem, according to the present invention, the following gas-dissolved water generator is provided.

That is, the gas dissolved water generating apparatus according to the present invention is
A container for storing raw water;
A gas generating unit sandwiching a solid polymer electrolyte membrane between a porous upper electrode and a porous lower electrode;
A power supply control unit for controlling a DC voltage applied to each of the upper electrode and the lower electrode of the gas generating unit;
A pair of conductive members connecting each of the upper electrode and the lower electrode and the power supply controller;
The gas generation unit connected to the conductive member is installed at the bottom of the container in which raw water is stored, and main product gas is generated on the upper electrode side and by-product gas is on the lower electrode side. A gas-dissolved water generator that is generated in
The gas generating unit is inclined with respect to the horizontal direction so that the high level part of the gas generating unit is positioned higher than the horizontal direction.

  According to the present invention, a large number of main product gases are generated at the interface between the upper electrode and the solid polymer electrolyte membrane in the form of fine bubbles on the upper electrode side, and a large number of by-product gases are minute on the lower electrode side. It occurs at the interface between the lower electrode and the solid polymer electrolyte membrane in the form of bubbles. On the upper electrode side, since there is no shielding object upward, minute bubbles of the main product gas float in the raw water. At that time, the fine bubbles of the main product gas have a large gas / liquid contact area per unit volume of the gas with respect to the raw water, and since the ascent rate is slow, contact with the raw water is ensured for a long time. Dissolves in raw water at high concentration. As a result, high-concentration main product gas-dissolved water can be efficiently generated.

  On the other hand, on the lower electrode side, fine bubbles of by-product gas are prevented from moving in a substantially vertical upward direction by the solid polymer electrolyte membrane, so that a high level of the gas generating part is formed along the lower surface of the inclined lower electrode. Move towards the club. In this process, minute bubbles of the by-product gas gather near the high-order portion of the gas generating portion and coalesce to grow into a large-sized bubble. The by-product gas that has grown into large bubbles rapidly rises in the raw water due to the increased buoyancy. In the case of large bubbles of by-product gas, the gas / liquid contact area per unit volume of gas with respect to the raw water becomes small, and the contact time with the raw water is shortened because the ascent rate is fast, so the by-product gas dissolves in the raw water. It is suppressed.

  Furthermore, on the lower electrode side, the gas generation part is inclined so that the bubbles of the by-product gas move smoothly, so that the by-product gas is prevented from accumulating in the lower part of the solid polymer electrolyte membrane. The As a result, the raw water is maintained in contact with the solid polymer electrolyte membrane, and the electrolysis of the raw water is continued. From the above, there is provided a small gas dissolved water generating device capable of easily generating main generated gas dissolved water in which a desired main generated gas is dissolved at a high concentration.

It is a typical sectional view explaining the gas dissolved water generating device concerning a 1st embodiment of this invention. It is the figure which looked at the state which removed the upper cover from the gas dissolved water production | generation apparatus shown in FIG. 1 from the upper surface. It is the figure which looked at the state which removed the lower cover from the gas dissolved water production | generation apparatus shown in FIG. 1 from the lower surface. It is a disassembled perspective view of the gas generation part in the gas dissolved water production | generation apparatus shown in FIG. It is explanatory drawing which expanded the principal part of the gas dissolved water production | generation apparatus shown in FIG. It is typical sectional drawing explaining the gas dissolved water production | generation apparatus which concerns on 2nd Embodiment of this invention. It is the figure which looked at the gas dissolved water production | generation apparatus shown in FIG. 6 from the upper surface. It is typical sectional drawing explaining the usage condition of the gas dissolved water production | generation apparatus shown in FIG. It is typical sectional drawing explaining the gas dissolved water production | generation apparatus which concerns on 3rd Embodiment of this invention. It is the figure which looked at the gas dissolved water production | generation apparatus shown in FIG. 9 from the upper surface. It is explanatory drawing which expanded the principal part of the gas dissolved water production | generation apparatus which concerns on a modification.

  First, the gas dissolved water generating apparatus 1 according to the first embodiment of the present invention will be described in detail with reference to FIGS.

(Overall configuration of the gas dissolved water generator 1)
As shown in FIG. 1, the gas-dissolved water generating device 1 is inclinedly disposed in a container 2 and a bottom portion of the container 2 (specifically, an upper accommodating space located on a bottom wall 6c of a lower container 6 described later). The gas generation unit 10 is provided. A container 2 for storing raw water 5 used for generating gas dissolved water is composed of an upper container 3, an upper lid 4, a lower container 6, and a lower lid 7.

  The upper container 3 is made of, for example, a translucent material, has a cylindrical side wall 3a, and a female screw portion is formed at the lower end of the side wall 3a. The lower container 6 is made of a non-translucent material, for example, and has an upper side wall 6a, a bottom wall 6c, and a lower side wall 6d. At the upper end of the upper side wall 6a, a male screw portion that is screwed into the female screw portion of the upper container 3 is formed. The upper side wall 6a and the lower side wall 6d are separated by the bottom wall 6c. At the lower end of the upper container 3, the upper container 3 and the lower container 6 are detachably connected in a liquid-tight manner by screwing the upper end of the lower container 6 through the seal 41. By separating the lower container 6 from the upper container 3 as necessary, the gas generating unit 10 accommodated in the lower container 6 can be washed. The upper container 3, the upper side wall 6 a that is liquid-tightly connected to the upper container 3, and the bottom wall 6 c constitute a container main body for storing the raw water 5. An inclined gas generation unit 10 is disposed in the upper storage space of the lower container 6 formed by the upper side wall 6a and the bottom wall 6c. Since the gas generating unit 10 is disposed in the upper housing space of the non-translucent lower container 6, the gas generating unit 10 becomes invisible from the outside, and the aesthetics are improved. On the other hand, since the upper container 3 is made of a translucent material, the user can visually recognize how minute bubbles of the main product gas b1 generated from the gas generation unit 10 are floated. Since the upper container 3 shows the appearance of minute bubbles, the upper container 3 can also be used as a design display.

  An inclined support part 23 for supporting the lower surface of the high-order part 10 a of the gas generating part 10 arranged in an inclined manner is installed on the bottom wall 6 c of the lower container 6 so as to approach the upper side wall 6 a of the lower container 6. A conductive member accommodation space for accommodating the conductive members 14c and 15c is formed between the inclined support portion 23 and the upper side wall 6a of the lower container 6. If the gas generation unit 10 is small and light, or if the conductive members 14c and 15c have high strength, the conductive members 14c and 15c can function as the inclined support portion 23. In that case, the installation of the inclined support portion 23 can be omitted.

  In the upward direction of the inclined support part 23, the inclined projecting part 24 and the generated gas partition wall part 21 are arranged close to the side wall 3 a of the upper container 3 and the upper side wall 6 a of the lower container 6, respectively. The inclined overhanging portion 24 extends in the horizontal direction or obliquely upward toward the side wall 3a and partially covers the uppermost portion of the high-order portion 10a of the gas generating portion 10. The inclined projecting portion 24 is provided in order to prevent bubbles of the by-product gas b2 from escaping from the by-product gas lead-out space 22 described later (in other words, dispersed in the horizontal direction). The inclined overhanging portion 24 promotes coalescence of bubbles of the byproduct gas b2.

  The generated gas partition wall 21 has a substantially semi-cylindrical shape, and a portion facing the side wall 3a of the upper container 3 is opened. The generated gas partition wall 21 is continuously provided from the end of the inclined protruding portion 24 on the upper side wall 6a side, and extends in a substantially vertical upward direction. The generated gas partition wall 21 makes the pair of conductive members 14c and 15c difficult to see from the outside. Further, the product gas partition wall portion 21 prevents the bubbles of the by-product gas b2 from being dispersed in the horizontal direction, thereby improving the bubble collection efficiency of the by-product gas b2. The by-product gas outlet 20 is constituted by the generated gas partition wall 21, the side wall 3a, and the upper side wall 6a. The internal space of the by-product gas deriving unit 20 is used as a by-product gas deriving space 22 in which bubbles are grown by aggregating minute bubbles of the by-product gas b2, and bubbles that have grown and floated. The generated gas partition wall 21, the inclined support part 23, and the inclined projecting part 24 can be integrally formed by molding an electrically insulating resin material. In addition, by preventing the by-product gas b2 from being mixed with the main product gas b1, the product gas partition wall 21 is configured to extend in a substantially vertical upward direction to a water surface level where the raw water 5 is normally stored. Can do.

  A pair of conductor insertion holes 51 are formed in the bottom wall 6 c of the lower container 6 at a position near the upper side wall 6 a of the lower container 6. Each of the pair of conductor insertion holes 51 is a hole penetrating the bottom wall 6c, and is dimensioned so that the pair of conductive members 14c and 15c extending substantially vertically downward can be inserted. The electrically insulating terminal mounting member 44 is fixed to the bottom wall 6c by the mounting screw 42 in a state where the upper and lower O-rings 43 are mounted on the conductive members 14c and 15c inserted through the conductor insertion holes 51, respectively. Is done. Between the upper and lower O-rings 43, an air escape hole 52 penetrating the upper side wall 6a is formed. And as shown in FIG. 3, the lower end part of the electrically-conductive members 14c and 15c is inserted in the electroconductive terminal connection part 26, and the upper electrode 14 and the lower electrode 15 of the gas generation part 10 are each corresponding terminal. It is electrically connected to the connection part 26.

  In the lower housing space formed by the lower side wall 6d and the bottom wall 6c, various electrical components such as the terminal connection portion 26, the power supply control portion 30, and the DC jack 39 are disposed. They are electrically connected to each other. The power supply control unit 30 is disposed outside the bottom wall 6 c of the lower container 6.

  The power supply control unit 30 controls a power supply that applies a DC voltage to the upper electrode 14 and the lower electrode 15 of the gas generation unit 10 to be described later. The power source is an AC adapter provided outside the power source control unit 30 or a battery disposed in a lower housing space of the lower container 6. The battery may be either a primary battery or a secondary battery. The power supply control unit 30 includes a substrate 33, a push switch 34, an LED display unit 36, a density changeover switch, a voltage polarity changeover switch, and the like.

  The substrate 33 can include a control circuit that controls the voltage, current, and time during electrolysis, and a storage medium that stores the accumulated time of electrolysis. The push switch 34 is a switch for performing various operations and settings related to power ON / OFF and electrolysis. The LED display unit 36 can function as an alarm notifying an energized (electrolytic) state or notifying that some trouble has occurred. A concentration changeover switch (not shown) is a switch for changing an operation time during electrolysis. The voltage polarity selector switch is a switch that switches between positive and negative polarities of the voltage applied to the upper electrode 14 and the lower electrode 15 of the gas generator 10. When the upper electrode 14 is a cathode, hydrogen gas as a main product gas is generated at the interface between the upper electrode 14 and the solid polymer electrolyte membrane 11, and hydrogen water can be obtained. Further, when the upper electrode 14 is switched to the anode, ozone gas as the main product gas is generated at the interface between the upper electrode 14 and the solid polymer electrolyte membrane 11, and ozone water can be obtained.

  At the upper end of the upper container 3, the upper lid 4 is detachably attached to the upper container 3 by the engagement of the upper lid 4. At the lower end of the lower container 6, the lower lid 7 is detachably attached to the lower container 6 by the engagement of the lower lid 7. In addition, if the gas dissolved water production | generation apparatus 1 is a small portable (handy) type, the upper lid | cover 4 is removed and the container 2 is tilted, The main production | generation gas dissolved water 5 produced | generated is the upper end of the upper container 3 Can be poured out from. Moreover, if the gas dissolved water production | generation apparatus 1 is a middle size and a large installation type, the main production | generation gas dissolved water 5 produced | generated by providing the cock (valve) which is not illustrated in the lower part of the side wall 3a and the upper side wall 6a. Can be taken out through a cock (valve).

(Configuration of gas generation unit 10)
As shown in FIG. 4, the gas generator 10 includes an upper cover 18, an upper electrode 14, a catalyst layer 12, a solid polymer electrolyte membrane 11, a catalyst layer 13, a lower electrode 15, and a lower cover 19 in order from the top. Have a laminated structure. The upper electrode 14, the catalyst layer 12, the solid polymer electrolyte membrane 11, the catalyst layer 13, and the lower electrode 15 are sandwiched between the upper cover 18 and the lower cover 19. In order to increase the area of the upper electrode 14 and the lower electrode 15 in the inclined gas generating part 10 as much as possible, the inclined gas generating part 10 has an outer shape of the inner surface of the upper side wall 6 a of the lower container 6. It is comprised so that. Since the lower container 6 has a substantially cylindrical shape, the outer shape of the gas generation unit 10 (the upper electrode 14 and the lower electrode 15) is, for example, a long axis extending from the high-order part 10a to the low-order part 10b. It can be an elliptical shape. Although the shape depends on the inclination angle of the gas generation unit 10, the electrode area in the gas generation unit 10 can be increased by several tens of percent compared to the circular shape.

  The upper cover 18 includes a flat vertical frame portion 18b extending in the vertical direction, a flat horizontal frame portion 18f extending in the horizontal direction, a peripheral frame portion 18g forming a peripheral portion, and four opening portions 18c having a large opening area. And having. The four openings 18c are surrounded by a vertical frame portion 18b, a horizontal frame portion 18f, and a peripheral frame portion 18g. One central through hole 18a is formed at a portion where the vertical frame portion 18b and the horizontal frame portion 18f intersect. The upper cover 18 functions as an upper pressure contact member, and is configured such that the upper surface of the upper electrode 14 is exposed in the widest possible range. Since the opening 18c of the upper cover 18 has a large opening area, it becomes easy for the minute bubbles of the main product gas b1 to float as they are without being combined with the other minute bubbles of the main product gas b1.

  The lower cover 19 includes a bottom wall portion 19b, a peripheral edge portion 19c, a plurality of protrusion portions 19f, and a plurality of gap portions 19d. The peripheral edge portion 19c protrudes upward from the peripheral portion of the bottom wall portion 19b. The plurality of projecting portions 19f protrude upward from the bottom wall portion 19b and extend in the lateral direction. The plurality of gaps 19d are formed between two adjacent protrusions 19f and extend in the lateral direction to form a groove. One central screw hole 19a is formed in a substantially central portion of the bottom wall portion 19b. A portion for attaching the conductive member 15c in the peripheral edge portion 19c is provided with a notch 19g in which the peripheral edge portion 19c is partially cut out. The notch 19g functions as an opening for disposing the weld end 15b of the conductive member 15c, and also functions as an outlet for the generated by-product gas b2.

  The central through hole 18a and the central screw hole 19a are formed in the through holes 14a, 12a, 11a formed in the upper electrode 14, the catalyst layer 12, the solid polymer electrolyte membrane 11, the catalyst layer 13, and the lower electrode 15, respectively. , 13a, and 15a. A laminate of the upper electrode 14, the catalyst layer 12, the solid polymer electrolyte membrane 11, the catalyst layer 13, and the lower electrode 15 is sandwiched between the upper cover 18 and the lower cover 19 and then fastened with an insulating screw 28. As a result, the gas generating part 10 in the pressure contact state is obtained. Since each component in the gas generation part 10 is closely contacting, the raw water 5 can be electrolyzed stably. Further, when each of the through holes 14a, 12a, 11a, 13a, 15a has a large hole diameter that does not contact the outer shape of the screw 28, or the edge of the central screw hole 19a of the electrically insulating lower cover 19 Can be used in the case where it extends upward and is interposed in the gaps between the through holes 14a, 12a, 11a, 13a, and 15a.

  The upper electrode 14 is, for example, a substantially egg-shaped mesh metal (for example, titanium) plate-like body, and has a large number of minute holes. The mesh-like plate-like body is an integrated lattice-like micro-fabrication created by cutting a large number of linear discontinuous slits into a thin plate and cutting it out in multiple rows. Consists of grating and the like. The upper surface side of the upper electrode 14 is welded to the welding end 14b of the conductive member 14c.

  Similarly, the lower electrode 15 is, for example, an approximately egg-shaped mesh metal (for example, titanium) plate-like body, and has a large number of minute holes. The mesh-like plate-like body is an integrated lattice-like micro-fabrication created by cutting a large number of linear discontinuous slits into a thin plate and cutting it out in multiple rows. It consists of grating and the like. The lower surface side of the lower electrode 15 is welded to the weld end 15b of the conductive member 15c.

  The catalyst layers 12 and 13 are made of a noble metal-based material (including an alloy containing a noble metal) such as platinum, and have a substantially egg shape substantially the same shape as the upper electrode 14 and the lower electrode 15. The catalyst layers 12 and 13 are mesh-like thin plates, which are created by cutting a thin wire rod in a woven mesh or a thin discontinuous slit in a thin plate in multiple rows and extending it. It is composed of a monolithic grid-like micro grating or the like, and has a large number of minute holes. Further, the catalyst layers 12 and 13 can be made of a material other than a noble metal such as nanocarbon graphene.

  Preferably, the opening size of the holes in the catalyst layers 12 and 13 is smaller than the opening size of the holes in the upper electrode 14 and the lower electrode 15, and the holes in the catalyst layers 12 and 13 are lower than the upper electrode 14 and the lower electrode. The eyes are configured to be finer than the holes of the electrode 15. The catalyst layers 12 and 13 can be contained in the upper electrode 14 and the lower electrode 15 by coating at least the lower surface of the upper electrode 14 and at least the upper surface of the lower electrode 15 by a method such as plating.

  When a noble metal having high catalytic activity is used as the catalyst layers 12 and 13, the electrolysis voltage can be lowered. Then, by making the catalyst layers 12 and 13 have a fine porous structure, the solid polymer electrolyte membrane 11 and the catalyst layer 12 are partially in contact with each other in a large number of minute regions, so that the main product gas b1 is minute. Can be generated in the form of simple bubbles. The generated fine bubbles of the main product gas b1 can easily pass through the fine holes of the fine porous catalyst layers 12 and 13 and float as they are without being combined with other fine bubbles. .

  The solid polymer electrolyte membrane 11 is a cation exchange membrane, for example, a cation exchange group perfluorosulfonic acid membrane based on polytetrafluoroethylene, such as Nafion (registered trademark) membrane manufactured by Du Pont. A copolymer of cation exchange group vinyl ether and tetrafluoroethylene, such as Flemion (registered trademark) membrane manufactured by Asahi Kasei.

  The pair of conductive members 14c and 15c are metal (for example, titanium) rod-like bodies for applying a DC voltage from the power supply control unit 30 to the upper electrode 14 and the lower electrode 15, and both are electrically They are spaced apart such that they do not touch. The conductive members 14c and 15c are each bent in an inverted J shape. The upper ends of the conductive members 14c and 15c are slightly bent downward with respect to the horizontal direction, and are welded to the upper surface of the upper electrode 14 and the lower surface of the lower electrode 15 as welded end portions 14b and 15b, respectively. Yes. The lower end portions of the conductive members 14c and 15c extend substantially vertically downward and are inserted into the terminal connection portion 26, respectively. By combining the pair of conductive members 14c and 15c on one side of the gas generation unit 10 (that is, the high-level portion 10a), the structure and electrical connection of the gas generation unit 10 are simplified.

  In the gas generation unit 10 that is inclinedly arranged at the bottom of the container 2, the high level part 10 a close to the byproduct gas lead-out part 20 is positioned high in the horizontal direction, and the low level part close to the bottom wall 6 c of the lower container 6. 10b is located at a lower position in the horizontal direction. At the interface between the lower electrode 15 and the solid polymer electrolyte membrane 11, minute bubbles of the by-product gas b2 are generated. The generated fine bubbles of the by-product gas b2 are prevented from moving in the substantially vertical upward direction by the solid polymer electrolyte membrane 11, and thus move in the direction of the high-order portion 10a (welded end portion 15b of the conductive member 15c). In this process, the generated fine bubbles of the by-product gas b2 gather near the uppermost top portion (welded end portion 15b of the conductive member 15c) of the high-order portion 10a and merge to grow into a large-sized bubble. The by-product gas b <b> 2 that has grown into large bubbles gains increased buoyancy and rises rapidly in the raw water 5. The large bubbles of the by-product gas b2 have a small gas / liquid contact area per unit volume of the by-product gas b2 with respect to the raw water 5, and the contact time with the raw water 5 is short, so that the by-product gas b2 is dissolved in the raw water 5. It is suppressed. In addition, when the gas generation part 10 is arrange | positioned at a horizontal direction, such an effect | action cannot be obtained.

  The inclination angle of the gas generation unit 10 with respect to the horizontal direction is not particularly limited, but if the inclination angle is too large, movement of minute bubbles of the by-product gas b2 becomes very easy. For this reason, it is difficult to secure the time until the minute bubbles of the generated by-product gas b2 gather and coalesce and grow into a large-sized bubble, so that the dissolved concentration of the by-product gas b2 is not easily lowered. Moreover, in the gas generation part 10 with a large inclination angle, since the high-order part 10a becomes close to the liquid level of the raw water 5 stored in the container 2, the dissolution time of the main product gas b1 is shortened, and the main product gas b1 is dissolved. It becomes difficult to increase the concentration.

  On the other hand, if the inclination angle of the gas generation unit 10 with respect to the horizontal direction is too small, the generated fine bubbles of the by-product gas b2 are formed in one direction (specifically, the high-order part in the inclined gas generation unit 10). In the direction of 10a). Therefore, some of the generated fine bubbles of the by-product gas b2 are dispersed and floated from a plurality of locations in the gas generation unit 10, so that it is difficult to grow into large-sized bubbles. In addition, when the inclination angle with respect to the horizontal direction of the gas generation part 10 which does not limit this invention is illustrated, it is 2 to 70 degree | times, Preferably it is 5 to 55 degree | times, More preferably, it is 10 to 45 degree | times.

  According to the above configuration, the minute bubbles of the main product gas b1 generated at the interface between the upper electrode 14 and the solid polymer electrolyte membrane 11 float through the large opening 18c formed on the upper electrode 14 side. Since the bubbles of the main product gas b1 are very small, they slowly rise in the raw water 5. In the ascending process, minute bubbles of the main product gas b1 are dissolved in the raw water 5, so that the dissolved concentration of the main product gas b1 becomes high.

  On the other hand, the lower electrode 15 is in a state of being covered by the bottom wall portion 19 b of the lower cover 19. The lower surface of the lower electrode 15 is in contact with the upper surfaces of the plurality of protrusions 19f, and gaps are formed by the presence of the plurality of gap portions 19d in other areas. The minute bubbles of the by-product gas b2 generated at the interface between the lower electrode 15 and the solid polymer electrolyte membrane 11 are prevented from moving substantially vertically upward by the solid polymer electrolyte membrane 11. At this time, the by-product gas b2 generated at the protrusion 19f moves to the gap 19d and then moves along the inclined gap 19d. In addition, the minute bubbles of the by-product gas b2 generated in the gap portion 19d move as it is along the inclined gap portion 19d. Therefore, the plurality of inclined gap portions 19d function as passages for guiding minute bubbles of the by-product gas b2 generated on the lower electrode 15 side toward the notches 19g.

  The notch 19g functions as an opening that transfers the by-product gas b2 that has moved along the gap 19d to one place and grows it into a large bubble, and then transfers it to the by-product gas lead-out space 22. Furthermore, by covering the lower surface side of the lower electrode 15 with the lower cover 19, the by-product gas dissolved water is prevented from coming out of the gas generation unit 10.

  As described above, the minute bubbles of the by-product gas b2 generated on the lower electrode 15 side, along the gap portion 19d of the lower cover 19, are the uppermost top portions (the weld end portion 15b and the notch) of the lower electrode 15. 19g). In addition, minute bubbles of the by-product gas b2 in the vicinity of the peripheral edge portion 19c also move along the peripheral edge portion 19c in the direction of the uppermost top (the weld end portion 15b and the notch 19g) in the lower electrode 15. Therefore, by the lower surface of the lower electrode 15 and the gap portion 19d and the peripheral edge portion 19c of the lower cover 19, the fine bubbles of the by-product gas b2 are removed from the top of the lower electrode 15 (the welded end portion 15b and the notch 19g). A by-product gas guiding portion is formed to guide the gas.

  In the induction process of the by-product gas b2, the minute bubbles of the by-product gas b2 gather near the top of the lower electrode 15 (the weld end 15b and the notch 19g) and coalesce into a large-sized bubble. grow up. Then, the by-product gas b2 that has grown into large bubbles gains increased buoyancy and rapidly rises in the raw water 5 along the side wall 3a of the upper container 3 (in other words, in the by-product gas lead-out space 22). To do. Therefore, dissolution of the by-product gas b2 in the raw water 5 is suppressed.

  As described above, when electrolysis is performed for a predetermined time using the gas-dissolved water generating apparatus 1, the main product gas-dissolved water 5 in which the main product gas b1 is dissolved at a high concentration can be obtained in a short time. For example, high-concentration hydrogen water having a dissolved hydrogen concentration exceeding 1000 ppb (μg / liter) can be obtained by energization (electrolysis) for about 5 minutes.

(Second Embodiment)
Next, a second embodiment of the present invention will be described in detail with reference to FIGS. In the second embodiment, components having the same functions as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

  In the gas dissolved water generating apparatus 1 according to the second embodiment, the container 2 includes the minimum electrical components necessary for electrolysis, and the pedestal 8 separate from the container 2 includes other electrical components. It is comprised so that it may contain. Since the container 2 includes the minimum electrical components necessary for electrolysis, the container 2 can be reduced in size and weight. The internal volume of the container 2 is several hundred ml, for example. As a result, the gas dissolved water generating apparatus 1 according to the second embodiment is convenient for moving to a kitchen, living room, guest room, and the like.

  In the gas-dissolved water generating apparatus 1 shown in FIGS. 6 and 8, the gas generator 10 that is inclined is disposed at the bottom of the container 2 (specifically, the bottom wall 6c of the lower container 6 described later). . The substantially cylindrical container 2 includes an upper container 3, an upper lid 4, a lower container 6, and a lower lid 7. A handle 3b is formed on the side wall 3a of the upper container 3 from the upper part to the middle part.

  The upper container 3 is partitioned into an upper space and a lower space by a partition wall portion 3c extending in a substantially horizontal direction. In the partition wall portion 3 c, a large main opening is provided in a portion where the fine bubbles of the main product gas b <b> 1 float up facing the upper electrode 14 of the gas generation unit 10. A minute bubble of the main product gas b1 rises through the main opening. A small sub-opening is provided in a portion close to the side wall 3a. Large bubbles of the by-product gas b2 rise through the sub-opening. In the partition wall portion 3c, the main opening for the main product gas b1 and the sub opening for the byproduct gas b2 are separated by a partition. A generated gas partition wall portion 21 is disposed between the partition portion and the high-order portion 10 a of the gas generation portion 10. Under the generated gas partition wall 21, the welded end portions 14b and 15b and the conductive members 14c and 15c of the gas generating unit 10 are routed. By the product gas partition wall 21, bubbles of the by-product gas b <b> 2 are guided to the sub-opening of the partition wall 3 c through the by-product gas outlet space 22.

  The lower container 6 is liquid-tightly fitted to the lower part of the upper container 3 via two upper and lower O-rings 45. Then, the lower lid 7 is screwed into the lower end portion of the upper container 3, and the upper end of the lower container 6 is pressed against the lower surface of the flange of the partition wall portion 3c. In the internal space of the lower container 6, the inclined gas generation unit 10 is attached to the bottom wall 6 c of the lower container 6. Either the configuration in which the lower portion 10b of the inclined gas generation unit 10 is in contact with the bottom wall 6c of the lower container 6 or the configuration in which it is slightly separated may be used. Each of the conductive members 14c and 15c has a shape bent in a step shape. The upper ends of the conductive members 14c and 15c are welded to the upper electrode 14 and the lower electrode 15 as weld ends 14b and 15b, respectively. Two conductor insertion holes 51 are formed in the bottom wall 6 c of the lower container 6. The shaft portion of the seal screw 46 is inserted into each of the conductor insertion holes 51. The seal screw 46 is a screw having a certain seal structure in which, for example, an electrode seal 53 (O-ring) is fitted to the shaft portion of the seal screw 46. The lower ends of the conductive members 14 c and 15 c and the electrode seal 53 are sandwiched between the head portion of the seal screw 46 and the bottom wall 6 c of the lower container 6. One end of the connecting leg 47 is sandwiched between the nut of the seal screw 46 and the bottom wall 6 c of the lower container 6. By tightening each sealing screw 46, the lower ends of the conductive members 14c and 15c are fixed in a liquid-tight manner above the bottom wall 6c of the lower container 6, and one end of the connection leg 47 is fixed below the bottom wall 6c of the lower container 6. Is done. Therefore, an electrical connection with the base 8 is formed on the bottom wall side of the container 2.

  The pair of connection legs 47 for the upper electrode 14 and the lower electrode 15 are strip-shaped members (for example, metal materials) having conductivity and elasticity. In each connection leg 47, one end is fixed to the lower side of the bottom wall 6 c of the lower container 6, and the other end extends toward the center so as to make electrical contact with the connection protrusion 48. As shown in FIG. 7, the two connection protrusions 48 are screws that are attached to the upper surface 8 b of the pedestal 8 so as to be separated from each other. When the other ends of the pair of connection legs 47 are in electrical contact with the connection protrusions 48, the gas generator 10 is supplied with power.

  The pedestal 8 is a box having a substantially egg shape in plan view, and is installed on a table (not shown), for example. The container 2 described above is placed on the upper surface 8 b of the base 8. In the internal space of the pedestal 8, electrical components such as the power supply control unit 30 and the DC power supply unit 31 are disposed and are electrically connected to each other. The power supply control unit 30 is disposed in the base 8 that is located outside the bottom wall 6 c of the lower container 6.

  The power supply control unit 30 includes a substrate 33, a push switch 34, an LED display unit 36, a concentration changeover switch, a voltage polarity changeover switch, and the like. For example, as shown in FIG. 7, the power supply control unit 30 is disposed on the left side of the upper surface 8 b so as not to overlap the placement position of the container 2. A cord insertion hole 38 is formed in the right side wall of the base 8. One end of a power cord (not shown) connected to the DC power supply unit 31 is inserted into the cord insertion hole 38, and a plug provided on the other end of the power cord is inserted into an external outlet (not shown). A plurality of rubber feet 8 a are attached to the lower surface 8 c of the base 8. The positive / negative polarity of the voltage applied to the upper electrode 14 and the lower electrode 15 can be switched by the voltage polarity switching switch, and hydrogen water or ozone water can be selected as the main product gas dissolved water 5. .

  As shown in FIG. 8, the container 2 can be separated from the base 8 by inserting a hand into the handle 3b and lifting it. And the main product gas dissolved water 5 stored in the container 2 can be provided to the user by tilting the container 2. It is necessary to place the separated container 2 at a predetermined position on the base 8 so that the other ends of the pair of connection legs 47 are in electrical contact with the corresponding connection protrusions 48. Therefore, a marker that allows the position where the container 2 should be placed to be visually recognized and a male / female fitting structure that uniquely defines the position where the container 2 should be placed are provided on the upper surface of the base 8. It is preferable to provide on 8b. Further, as positioning means, one of the N poles and S poles of the magnet is installed on the bottom surface of the container 2 and the other is installed on the top surface 8b of the base 8 so that the N poles and S poles attract each other at a predetermined position. It can also be configured.

  Similarly to the first embodiment, when electrolysis is performed for a predetermined time using the gas-dissolved water generating apparatus 1 according to the second embodiment, the main product gas-dissolved water 5 in which the main product gas b1 is dissolved at a high concentration is short. It is obtained by. For example, high-concentration hydrogen water having a dissolved hydrogen concentration exceeding 1000 ppb (μg / liter) can be obtained by energization (electrolysis) for about 5 minutes.

(Third embodiment)
9 and 10 show a gas-dissolved water generator 1 according to the third embodiment. The gas-dissolved water generating device 1 according to the third embodiment is provided with an electrical connection with the base 8 on the side wall side of the container 2 in comparison with the gas-dissolved water generating device 1 according to the second embodiment. It is characterized by. In the third embodiment, components having the same functions as those in the second embodiment will be denoted by the same reference numerals, overlapping description will be omitted, and differences will be mainly described.

  In the gas generation unit 10, each of the conductive members 14c and 15c is bent in an inverted J shape. The upper ends of the conductive members 14c and 15c are welded to the upper electrode 14 and the lower electrode 15 as weld ends 14b and 15b, respectively. Two conductor insertion holes 51 are formed in the upper side wall 6 a of the lower container 6. The shaft portion of the seal screw 46 similar to that described in the second embodiment is inserted into each of the conductor insertion holes 51. The lower ends of the conductive members 14 c and 15 c and the electrode seal 53 are sandwiched between the head portion of the seal screw 46 and the upper side wall 6 a of the lower container 6. One end of the connection leg 47 is sandwiched between the nut of the seal screw 46 and the upper side wall 6 a of the lower container 6. By tightening each seal screw 46, the lower ends of the conductive members 14c and 15c are fixed in a liquid-tight manner inside the upper side wall 6a of the lower container 6, and one end of the connection leg 47 is fixed outside the upper side wall 6a of the lower container 6. The

  The pair of connection legs 47 for the upper electrode 14 and the lower electrode 15 are strip-shaped members (for example, metal materials) bent into an N shape having conductivity and elasticity. In each connection leg 47, one end is fixed to the outside of the upper side wall 6 a of the lower container 6, and the other end is in electrical contact with the connection protrusion 48. As shown in FIG. 10, the two connection protrusions 48 are screws attached to the side terminal surface 8 f of the pedestal 8 so as to be separated from each other. When the other ends of the pair of connection legs 47 are in electrical contact with the connection protrusions 48, power is supplied to the gas generator 10.

  As shown in FIG. 10, the base 8 has a substantially egg shape in plan view. At the right end portion of the upper surface 8b, a bulging connection portion 8d having a crescent shape in plan view protrudes upward. The inner side surface of the bulging connection portion 8d constitutes a side terminal surface 8f. Two connection protrusions 48 are spaced apart from each other at a position above the upper surface 8b of the base 8 in the side terminal surface 8f. According to this configuration, even when raw water 5 or the like spills on the upper surface 8b of the pedestal 8 when handling the container 2, each connection leg 47 is prevented from getting wet with the raw water 5 or the like. The waterproof structure can be simplified.

  Also in the gas dissolved water generating apparatus 1 according to the third embodiment, the main generated gas dissolved water 5 in which the main generated gas b1 is dissolved at a high concentration can be obtained in a short time by electrolysis for a predetermined time. For example, high-concentration hydrogen water having a dissolved hydrogen concentration exceeding 1000 ppb (μg / liter) can be obtained by energization (electrolysis) for about 5 minutes.

(Modification)
FIG. 11 schematically shows a gas-dissolved water generator 1 according to a modification of the present invention. The gas-dissolved water generating device 1 according to the modified example has a pair of conductive members 14c and 15c that are lower than the gas generating unit 10 in comparison with the gas-dissolved water generating device 1 according to the first to third embodiments described above. It is provided on the side of the portion 10b.

  As shown in FIG. 11, a pair of conductive members 14 c and 15 c are provided on the low-order part 10 b side of the gas generation part 10, and the high-order part 10 a of the gas generation part 10 is supported by the inclined support part 23. In the gas generation unit 10, the conductive members 14c and 15c are each bent into an inverted J shape. The upper end portions of the conductive members 14c and 15c are respectively curved upward in the horizontal direction and are welded to the upper surface of the upper electrode 14 and the lower surface of the lower electrode 15 as weld end portions 14b and 15b. The lower end portions of the conductive members 14 c and 15 c extend in a substantially vertical downward direction, and are inserted through two conductor insertion holes 51 formed in the bottom wall 6 c of the lower container 6. Although not shown, the lower ends of the conductive members 14c and 15c are inserted into a terminal connection portion 26 (not shown).

  In the by-product gas outlet 20 of FIG. 11, since the conductive member housing space for housing the conductive members 14 c and 15 c is not required, the inclined support portion 23 is solid rather than hollow. The conductive members 14c, 15c may extend obliquely upward in the horizontal direction or toward the upper wall 6a in the vicinity. In this case, two conductor insertion holes 51 for inserting the conductive members 14 c and 15 c are formed in the upper side wall 6 a of the lower container 6. Moreover, either the structure which contact | abuts to the bottom wall 6c of the lower container 6, or the structure spaced apart slightly may be sufficient as the low-order part 10b of the inclined gas generation part 10. FIG.

  Also in the gas-dissolved water generating apparatus 1 according to the modification, the main product gas-dissolved water 5 in which the main product gas b1 is dissolved at a high concentration is obtained in a short time by electrolysis for a predetermined time. For example, high-concentration hydrogen water having a dissolved hydrogen concentration exceeding 1000 ppb (μg / liter) can be obtained by energization (electrolysis) for about 5 minutes.

  In the above-described embodiment, the pair of conductive members 14c and 15c are arranged on one side of either the high-order part 10a or the low-order part 10b of the gas generation part 10, but are limited to this structure. It is not a thing. For example, it can be configured such that the conductive member 14c connected to the upper electrode 14 is positioned at the high level portion 10a and the conductive member 15c connected to the lower electrode 15 is positioned at the low level portion 10b. In other words, in this configuration, the pair of conductive members 14c and 15c are arranged separately from the high-order part 10a and the low-order part 10b, respectively. Conversely, the conductive member 14c may be positioned at the low level portion 10b and the conductive member 15c may be positioned at the high level portion 10a. In any case, the gas generating unit 10 is inclined by the conductive members 14c and 15c (15c, 14c) that are spaced apart from each other in the high level part 10a and the low level part 10b (the low level part 10b and the high level part 10a). Is in a supported form.

  Moreover, the power supply control part 30 may be arrange | positioned in the bulging connection part 8d of the base 8 located in the outer side separated by the upper side wall 6a of the lower container 6, for example. Further, in any of the first to third embodiments, the gas generating unit 10 is fed by electrically contacting the opposing conductive contacts, but the method is limited to the feeding method. Is not to be done. For example, the gas generator 10 can be supplied with power by a known non-contact power supply method. In the non-contact power feeding method, a magnetic force is generated when a current is passed through a primary coil arranged on the pedestal 8 side among adjacent primary coils and secondary coils, and thereby a secondary coil arranged on the container 2 side. This is based on the principle of electromagnetic induction in which power is generated in the next coil. The AC electromotive force generated in the secondary coil is converted into a DC voltage by the rectifier circuit, and the DC voltage is applied to the upper electrode 14 and the lower electrode 15.

  As described above, according to the present invention, on the upper electrode 14 side, a large number of main product gases b1 are generated in the form of minute bubbles at the interface between the upper electrode 14 and the solid polymer electrolyte membrane 11, and the lower electrode 15 On the side, a large number of by-product gases b2 are generated at the interface between the lower electrode 15 and the solid polymer electrolyte membrane 11 in the form of minute bubbles. Since there is no shield above the upper electrode 14, the fine bubbles of the main product gas b <b> 1 float in the raw water 5 without uniting with other fine bubbles. At that time, in the fine bubbles of the main product gas b1, the gas / liquid contact area per unit volume of the main product gas b1 with the raw water 5 is large, and the floating speed is slow, so that the contact with the raw water 5 is secured for a long time. Therefore, the main product gas b1 is dissolved in the raw water 5 at a high concentration. As a result, the high concentration main product gas dissolved water 5 can be efficiently generated.

  On the other hand, on the lower electrode 15 side, the minute bubbles of the by-product gas b2 are prevented from moving in the substantially vertical upward direction by the solid polymer electrolyte membrane 11, so that the gas along the inclined lower surface of the lower electrode 15 It moves toward the high-order part 10a of the generating part 10. In this process, minute bubbles of the by-product gas b2 gather near the high portion 10a of the gas generation unit 10 and coalesce to grow into a large size bubble. The by-product gas b2 that has grown into large bubbles rapidly rises in the raw water 5 due to the increased buoyancy. In the large bubbles of the by-product gas b2, the gas / liquid contact area per unit volume of the by-product gas b2 with respect to the raw water 5 is reduced, and the contact time with the raw water 5 is shortened due to the high ascent rate. Of the by-product gas b2 is suppressed.

  Further, on the lower electrode 15 side, the fine bubbles of the by-product gas b2 are smoothly moved by the inclined arrangement of the gas generation unit 10, so that the by-product gas b2 is formed below the solid polymer electrolyte membrane 11. It is prevented that it accumulates in a shape. As a result, the raw water 5 is maintained in contact with the solid polymer electrolyte membrane 11, and the electrolysis of the raw water 5 is continued. From the above, there is provided a small gas dissolved water generating apparatus 1 that can easily generate the main generated gas dissolved water 5 in which the desired main generated gas b1 is dissolved at a high concentration.

  The present invention can have the following features in addition to the above features.

  That is, the conductive members 14 c and 15 c are arranged together in the high-order part 10 a in the gas generation part 10. According to the said structure, the structure and electrical connection of the gas generation part 10 become easy. When the conductive members 14c and 15c fulfill the function of the inclined support portion 23, the inclined support portion 23 can be omitted.

  The high-order part 10 a in the gas generation part 10 is arranged close to the side wall of the container 2. According to this configuration, the bubbles of the by-product gas b2 are restricted from being dispersed in the horizontal direction, and the bubbles of the by-product gas b2 are easily merged to grow into large-sized bubbles.

  The outer shape of the gas generation unit 10 is configured to be along the inner surface of the container 2. According to the said structure, the electrode area in the gas generation part 10 can be increased.

  In the gas generator 10, the upper electrode 14, the solid polymer electrolyte membrane 11, and the lower side are formed by the upper pressure contact member 18 provided on the upper surface of the upper electrode 14 and the lower pressure contact member 19 provided on the lower surface of the lower electrode 15. The electrode 15 is held in pressure contact. According to the said structure, since each component in the gas generation part 10 is closely_contact | adhered, electrolysis of the raw | natural water 5 can be performed stably.

  The upper pressure contact member 18 is configured such that the upper surface of the upper electrode 14 is exposed in the widest possible range. According to this configuration, since the upper pressure contact member 18 has a large opening area, it is easy for the fine bubbles of the main product gas b1 to float as they are without being combined with other fine bubbles of the main product gas b1. Become.

  In the high-order part 10a of the gas generating part 10, the by-product gas b2 is separated from the main product gas b1 generated on the upper electrode 14 side and the by-product gas b2 generated on the lower electrode 15 side. A product gas partition wall 21 that guides in the direction is provided. According to the said structure, the production gas partition part 21 prevents dispersion | distribution to the horizontal direction of the bubble of the byproduct gas b2, and improves the aggregation efficiency of the bubble of the byproduct gas b2.

  Between the solid polymer electrolyte membrane 11 and the upper electrode 14 and between the solid polymer electrolyte membrane 11 and the lower electrode 15, a porous noble metal system that is finer than the upper electrode 14 and the lower electrode 15, respectively. Catalyst layers 12 and 13 are disposed. According to this configuration, the electrolysis voltage can be lowered by the noble metal having high catalytic activity. Then, by making the catalyst layers 12 and 13 have a fine porous structure, the solid polymer electrolyte membrane 11 and the catalyst layer 12 are partially in contact with each other in a large number of minute regions, and the main product gas b1 is minute. It can be generated in the form of bubbles. The generated fine bubbles of the main product gas b1 can easily pass through the fine holes of the fine porous catalyst layers 12 and 13 and float as they are without being combined with other fine bubbles. .

  The power supply control unit 30 can switch the polarity of the voltage applied to the upper electrode 14 and the lower electrode 15. According to this configuration, hydrogen water or ozone water can be selected and obtained as the main product gas dissolved water 5.

  The container 2 includes an upper container 3 and a lower container 6 that is configured to be liquid-tight and detachable with respect to the lower part of the upper container 3, and the gas generation unit 10 is accommodated in the lower container 6. According to the said structure, the upper container 3 and the lower container 6 can be isolate | separated as needed, and the gas generation part 10 accommodated in the lower container 6 can be wash | cleaned. Further, if the upper container 3 is made translucent and the lower container 6 is made non-translucent, the gas generation unit 10 from the outside cannot be seen, but the state of generation of bubbles from the gas generation unit 10 is visually recognized. can do.

DESCRIPTION OF SYMBOLS 1 Gas dissolved water production | generation apparatus 2 Container 3 Upper container 3a Side wall 3b Handle 3c Partition part 4 Upper lid 5 Raw water (main production gas dissolved water)
6 Lower container 6a Upper side wall 6c Bottom wall 6d Lower side wall 7 Lower lid 8 Base 8a Rubber foot 8b Upper surface 8d Swelling connection part 8f Side terminal face 8g Recess 10 Gas generating part 10a Higher part 10b Lower part 11 Solid polymer electrolyte membrane 12 catalyst layer 13 catalyst layer 14 upper electrode 14b weld end (upper end)
14c Conductive member 15 Lower electrode 15b Weld end (upper end)
15c Conductive member 18 Upper cover (upper pressure contact member)
19 Lower cover (lower pressure contact member)
DESCRIPTION OF SYMBOLS 20 By-product gas derivation | leading-out part 21 Generated gas partition part 22 By-product gas derivation | leading-out space 23 Inclination support part 24 Inclination protrusion part 26 Terminal connection part 28 Screw 30 Power supply control part 31 DC power supply part 33 Board | substrate 34 Press switch 36 LED display part 38 Code Insertion hole 39 DC jack 41 Seal 42 Attachment screw 43 O-ring 44 Terminal attachment member 45 O-ring 46 Seal screw 47 Connection leg 48 Connection tip 51 Conductor insertion hole 52 Atmospheric escape hole 53 Electrode seal b1 Main product gas b2 Byproduct gas

Claims (10)

A container for storing raw water;
A gas generating unit sandwiching a solid polymer electrolyte membrane between a porous upper electrode and a porous lower electrode;
A power supply control unit for controlling a DC voltage applied to each of the upper electrode and the lower electrode of the gas generating unit;
And a pair of conductive members for connecting the respective said power control unit of the upper electrode and the lower electrode,
Gas-dissolved water in which the gas generation unit connected to the conductive member is installed at the bottom of the container in which raw water is stored, and main product gas is generated on the side of the upper electrode and the main product gas is dissolved. And a by-product gas is generated on the lower electrode side.
The gas generating part is inclined with respect to the horizontal direction so that the high level part of the gas generating part is located at a high level with respect to the horizontal direction ;
The gas-dissolved water generating apparatus, wherein a by-product gas guiding unit that guides the generated by-product gas to an uppermost top portion of the lower electrode is provided on the lower electrode side of the gas generating unit. The gas-dissolved water generating apparatus according to claim 1, wherein the by-product gas guiding portion is configured by a lower surface of the lower electrode and a gap portion and a peripheral edge portion of the lower cover. The gas dissolved water production | generation apparatus of Claim 1 or Claim 2 with which the said electrically-conductive member is collectively arrange | positioned at the said high-order part in the said gas generation part. The gas dissolved water generating apparatus according to any one of claims 1 to 3 , wherein the high-order part in the gas generating part is disposed close to a side wall of the container. The gas-dissolved water generating apparatus according to any one of claims 1 to 4 , wherein an outer shape of the gas generating unit is configured to be along an inner surface of the container. In the gas generating section, the upper electrode, the solid polymer electrolyte membrane, and the lower electrode are formed by an upper pressure contact member provided on the upper surface of the upper electrode and a lower pressure contact member provided on the lower surface of the lower electrode. The gas-dissolved water generating apparatus according to claim 1, wherein the gas-dissolved water generating apparatus is held in pressure contact with each other. In the high-order part of the gas generating part, the main product gas generated on the upper electrode side is separated from the by-product gas generated on the lower electrode side, and the by-product gas is directed upward. The gas dissolved water production | generation apparatus of any one of Claims 1-6 in which the produced | generated produced gas partition part is provided. Between the solid polymer electrolyte membrane and the upper electrode and between the solid polymer electrolyte membrane and the lower electrode, a porous noble metal system finer than the upper electrode and the lower electrode, respectively. The gas dissolved water production | generation apparatus of any one of Claims 1-7 by which the catalyst layer of this is arrange | positioned. The gas dissolved water generating apparatus according to any one of claims 1 to 8, wherein the power supply control unit can switch between positive and negative polarities of a voltage applied to the upper electrode and the lower electrode. The said container has an upper container and the lower container comprised so that attachment or detachment was liquid-tight with respect to the lower part of this upper container, The said gas generation part is accommodated in the said lower container. The gas dissolved water generating apparatus according to any one of claims 1 to 9.

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