JP4420667B2 - Electrolytic hydrogen water generator - Google Patents

Description

  The present invention relates to an electrolytic hydrogen water generating apparatus that generates hydrogen water by dissolving hydrogen gas generated by electrolysis in raw water.

  Conventionally, an electrolytic hydrogen water generator as shown in FIG. 4 is known. This conventional apparatus 51 includes a water electrolysis unit 52 and a power feeding unit 53. The water electrolysis unit 52 includes an electrolysis vessel 54 that stores the raw water 50. Inside the electrolytic vessel 54, a cylindrical metal electrode 55 and a columnar activated carbon porous body 56 are accommodated coaxially via an annular gap 57 of several mm. The metal electrode 55 is used as a cathode and the conductive activated carbon porous body 56 is used as an anode, or the polarities of both are reversed, and a DC electrolysis voltage is applied to both electrodes from the power feeding portion 53.

  By this electrolysis voltage, the raw water 50 in the annular gap 57 is electrolyzed, oxygen gas 58 is generated at the anode, hydrogen gas 59 is generated at the cathode, and these electrolysis gases stay in the upper part of the electrolysis vessel 54. When the internal pressure of the electrolysis vessel 54 increases due to the pressure of the electrolysis gas, the raw water 50 and the electrolysis gas permeate from the outside of the activated carbon porous body 56 into the inside through hole 60. At this time, surplus raw water 50 and electrolytic gas are discharged from the discharge port 69 to the outside of the vessel, and the inside of the electrolytic vessel 54 is maintained at substantially atmospheric pressure.

  As shown in FIG. 5, the activated carbon porous body 56 is formed into a hollow cylindrical shape by binding the activated carbon particles 61 with a binder 62. The porous body 56 has innumerable small spaces composed of pores (micropores) 63 of the activated carbon particles 61 and gaps 64 between the adjacent activated carbon particles 61. If the electrolysis is continued, the electrolytic gas is filled in the electrolytic vessel 54, and the electrolytic gas is filled into the activated carbon porous body 56 by this gas pressure and stored in countless small spaces.

  In this state, when the water supply valve 65 is opened, the raw water 50 is introduced into the electrolysis vessel 54, and in the process of flowing through the water channel 66 of the activated carbon porous body 56, the bubbles 67 of the electrolysis gas are involved, and the hydrogen gas is mixed. Dissolve to produce hydrogen water 68. The hydrogen water 68 is taken out from the discharge port 69 to the outside of the electrolytic vessel 54 by the supply pressure of the raw water 50, and used as drinking water or skin care water.

Many of the conventional electrolytic hydrogen water generators follow the basic technology of the above-described conventional apparatus 51. For example, Patent Document 1 discloses that an activated carbon porous body is provided with an annular gap inside a conductive cylindrical body. A technique is described in which a cylindrical body is used as a cathode, a porous body is used as an anode, a direct current voltage is applied between both electrodes, and raw water in an annular gap is electrolyzed. Patent Document 2 describes a technique in which an annular gap is formed between a pair of inner and outer activated carbon porous bodies, an AC voltage of 50-60 Hz is applied to both porous bodies, and the raw water in the annular gap is electrolyzed. ing.
JP 2001-187382 A JP 2003-113488 A

However, the conventional device 51 has the following problems.
(1) The inside of the electrolytic vessel 54 serves as an electrolysis chamber using the metal electrode 55 and the activated carbon porous body 56 as an electrode and a purification chamber using the activated carbon porous body 56. Due to the use of electrodes, there were the following problems.
-Since the metal electrode 55 with a large surface area and the activated carbon porous body 56 are used for an electrode, the voltage drop by the resistance of the raw | natural water 50 is large, and electrolysis efficiency is bad.
If the current density is increased in order to increase the electrolysis efficiency, the surface of the activated carbon porous body 56 is modified, and the electrical characteristics are likely to change.
-Since a direct current voltage is used for the electrolysis voltage, calcium carbonate is produced from calcium dissolved in the raw water 50 and deposited on the surface of the cathode, adversely affecting the electrolysis efficiency, Adhering may adversely affect filtration performance.
For this reason, it is necessary to perform maintenance work that periodically uses an acidic agent (for example, citric acid), cleans the electrode, and removes calcium carbonate.
・ In addition, when the electrolysis current value is increased, calcium carbonate is likely to be generated. Therefore, it is necessary to perform electrolysis over a long time with a weak current of 200 mA or less, and a large amount of hydrogen gas can be generated in a short time. Have difficulty.

(2) Even in the example in which the voltage is applied to the electrode, the following problem has occurred.
-In a hydrogen water generator that performs electrolysis only when raw water is supplied, it is possible to take measures to change the polarity of the electrode each time raw water is supplied. However, the polarity is biased and the production of calcium carbonate cannot be avoided.
-According to the technique of patent document 2, since an alternating voltage is applied to a pair of activated carbon porous body, the polarity of an electrode can be changed periodically and the production | generation of a calcium carbonate can be suppressed. However, at a commercial frequency of 50 to 60 Hz, the polarity changes in a short time, so that the electrolysis efficiency is reduced compared to a DC voltage (see paragraph 0032 of the same document).
・ Because a constant voltage power supply was used for both direct current and alternating current, the electrolysis current fluctuated significantly due to changes in the quality of raw water, such as hardness, chlorine concentration, and salinity, and there was a problem in electrolysis stability It was.

(3) Since the inside of the electrolytic vessel 54 is maintained at substantially normal pressure (atmospheric pressure), the amount of electrolytic gas stored in the activated carbon porous body 56 is small, the dissolved hydrogen concentration of hydrogen water is low, and the hydrogen water 68 The time that can be supplied as is short.

(4) In terms of the raw water purification function, the size of microorganisms is generally several μm or less, whereas the pore diameter of the activated carbon porous body 56 is several tens of μm. Performance cannot be obtained. Further, the organic matter adsorbed on the activated carbon porous body 56 promotes the growth of microorganisms, and there is a possibility that a large amount of microorganisms are mixed in the hydrogen water 68.

  The main object of the present invention is to provide an electrolytic hydrogen water generator that solves the above-mentioned problems, can stably supply high-concentration hydrogen water for a long period of time, and eliminates the adhesion of calcium carbonate to the activated carbon porous body. is there.

In order to solve the above-described problems, an electrolytic hydrogen water generating apparatus of the present invention is an apparatus that generates hydrogen water by dissolving hydrogen gas generated by electrolysis in raw water, and includes a water storage container and the water storage An electrode for electrolysis accommodated in a container, a power feeding part for applying an electrolysis voltage to the electrode for electrolysis, a cylindrical outer peripheral surface, and a vertically long through hole in the center, are formed into a cylindrical shape, and the cylindrical outer peripheral surface is It was separated from the electrode for electrolysis and extended above the upper end of the electrode for electrolysis so as to be housed in the water storage container, purifying raw water after electrolysis by the electrode for electrolysis, and generated at the electrode for electrolysis An activated carbon porous body to which the electrolysis voltage is not applied , which absorbs and stores hydrogen gas and dissolves the hydrogen gas in raw water, and water supply that supplies raw water at a predetermined water pressure to the electrolysis electrode of the water storage container from below and parts, the active Characterized in that the connected intake pipes through hole of the porous body and a water intake portion for taking out the hydrogen water from the reservoir.

Here, the separation distance between the electrode for electrolysis and the outer peripheral surface of the cylindrical column of the activated carbon porous body is 100 mm in the vertical direction so that it does not exceed 100 mm in the left-right direction at the shortest part (more preferably, it does not exceed 50 mm). It is preferable that both be brought close to each other so as not to exceed (more preferably not exceed 50 mm) so that the hydrogen gas generated at the electrode for electrolysis can come into contact with the surface of the activated carbon porous body as soon as it begins to float. Further, when the separation distance is 10 to 100 mm in the left-right direction at the shortest portion, it is preferable to provide an oblique guide plate that guides the hydrogen gas obliquely upward from the electrode for electrolysis to the activated carbon porous body.

  The hydrogen gas generated at the electrode for electrolysis is very fine when it begins to float, so it is easy to be adsorbed to the activated carbon porous body. It becomes difficult. Therefore, when the electrode for electrolysis and the activated carbon porous body are brought close to each other with the separation distance, a very fine hydrogen gas that starts to float can be adsorbed to the activated carbon porous body.

  In addition, the water storage container can be provided with an electrolysis chamber in which the electrode for electrolysis is stored on the lower side and a water purification chamber in which the activated carbon porous body is stored on the upper side. In this case, by placing the surface of the activated carbon porous body in the vertical direction substantially directly above the electrode for electrolysis, the floating hydrogen gas can easily come into contact with the surface of the activated carbon porous body. Alternatively, the electrolysis chamber in which the electrode for electrolysis is accommodated can be disposed overlapping the lower part of the water purification chamber in which the activated carbon porous body is accommodated, and the electrolysis electrode and the activated carbon porous body can be brought close to each other as described above.

  If the electrolysis chamber is housed with a pair of positive and negative electrodes (including the case of switching at a very low frequency as described later) and the water storage container is not used as one of the electrodes, the material of the water storage container Is not particularly limited, and may be a metal such as stainless steel or aluminum, or may be a synthetic resin. The structure of the water storage container is not particularly limited, but a pressure resistant structure that can sufficiently withstand the supply pressure of the raw water is desirable.

  As the electrode for electrolysis, for example, a platinum-plated electrode with excellent metal corrosion resistance can be used. In the present invention, the activated carbon porous body is not used as an electrode for electrolysis, but electrolysis of raw water is performed using a dedicated electrode for electrolysis in an electrolysis chamber. For this reason, compared with an activated carbon porous body, an electrode for electrolysis with a smaller surface area can be used to increase the current density, and a large amount of hydrogen gas can be generated in a short time. Therefore, compared with the conventional case, the time required for storing hydrogen gas is greatly shortened, and high-concentration hydrogen water can be stably supplied for a long time. In addition, calcium carbonate hardly adheres to the surface of the activated carbon porous body, so that the pores are blocked and stable filtration performance can be secured.

  Next, it is preferable to provide a pressure valve for holding the inside of the water storage container in a pressurized state in the water intake. Thereby, the inside of the water storage container is maintained at the same pressure as the set pressure of the pressure valve. For this reason, the electrolytic gas generated by electrolysis is pressurized inside the container, forcibly filled into the activated carbon porous body, and stored in countless small spaces. When water supply is started in this state, a water flow is generated by the differential pressure between the supply pressure of the raw water and the set pressure of the pressure valve inside the water storage container, the electrolytic gas stored in the activated carbon porous body is caught in the water flow, Under pressure, hydrogen gas bubbles are forcibly dissolved in the raw water. Therefore, compared to the conventional case where the electrolytic gas is stored and dissolved under normal pressure conditions, a larger amount of electrolytic gas is stored in the activated carbon porous body, and a higher concentration of hydrogen water is stably supplied over a long period of time. be able to.

  That is, as expressed in Equation 1 below, the solubility of the gas is proportional to the gas-liquid contact pressure, so the internal pressure of the water storage container is kept pressurized by the pressure valve, so that the hydrogen gas in the raw water is The solubility can be increased and the dissolved hydrogen concentration of hydrogen water can be improved.

(Equation 1)
C = kP
Where C: gas solubility
k: Henry's constant
P: Pressure

  In addition, by reducing the pressure of hydrogen gas bubbles, the rising speed of the bubbles is reduced and the bubbles can stay in the water for a long time, so the bubbles of hydrogen gas contained in the water per unit area are dramatically increased. In other words, the increase of a shown in Equation 2 below can accelerate the dissolution rate of hydrogen gas in the raw water.

(Equation 2)
dCAL / dt = Ka (CA−CAL)
Where CAL: dissolved gas concentration
t: time
K: Liquid side mass transfer coefficient
a: Gas-liquid contact area per unit volume
CA: Saturated dissolved gas concentration

  The type of the pressure valve is not particularly limited, and for example, a constant pressure valve in which the set pressure is fixed to a constant value, a pressure adjustment valve that can adjust the set pressure, a relief valve that can adjust the relief pressure, and the like can be used. Note that the set pressure of the pressure valve is preferably about 0.2 MPa · G when tap water having a feed water pressure of about 0.3 MPa · G (G: gauge pressure) is used as raw water.

Next, in order to prevent the adhesion of calcium carbonate to the electrode for electrolysis, it is desirable to use an alternating voltage with an extremely low frequency as the electrolysis voltage. In particular, in terms of high electrolytic efficiency and stable electrolytic reaction, the power supply unit is preferably an electrolytic power source that outputs a rectangular wave AC voltage of 10 ⁻⁴ to 10 ⁻¹ Hz to the electrode for electrolysis. When the frequency of the electrolysis voltage exceeds 10 ⁻¹ Hz, the efficiency of the electrolysis reaction is lowered and the generation rate of hydrogen gas is reduced. Further, in the region where the frequency is lower than 10 ⁻⁴ Hz, calcium carbonate is likely to be deposited on the cathode, and even if it can be eliminated at a reverse potential, the electrolytic reaction becomes unstable due to repeated deposition and disappearance.

  Moreover, it is preferable that the power feeding unit is a constant current power source for electrolysis that automatically varies the rectangular wave AC voltage so as to keep the electrolysis current constant. This is because the electrolysis current is kept constant regardless of the quality of the raw water, and the generation of hydrogen gas can be stabilized. Although this rectangular wave alternating voltage is not specifically limited, 1-40V is preferable.

  The activated carbon porous body is, for example, a conductive molded body formed by binding activated carbon particles with a binder, and has a water purification function for removing organic substances such as chlorine components and trihalomethane in raw water, and a space function for storing electrolytic gas. Is provided. Regarding the water purification function, since the cells of microorganisms are negatively charged in water with a neutral pH, calcium carbonate is deposited on the surface of the porous body by charging the activated carbon porous body to the positive polarity. Therefore, the collection performance of microorganisms can be improved. Specifically, it is preferable to provide a DC power source that applies a positive voltage in a voltage range of 1 V or more and no electrolysis to the activated carbon porous body. In addition, hydrogen gas is also negatively charged, which is effective for hydrogen adsorption and storage. When the applied voltage is less than 1 V, the microorganism collection performance becomes insufficient.

  In addition, the structure of a water supply part is not specifically limited, For example, the structure provided with the water supply port connected to the faucet of a water pipe and the water supply source of well water via a hose is employable. The configuration of the water intake unit is not particularly limited, and for example, a configuration in which a pressure valve is provided in the front stage (upstream side) of the discharge port for discharging hydrogen water can be adopted.

  Further, upstream of the water supply unit, a pre-water storage container provided with a pre-clean water chamber, a pre-activated carbon member housed in the pre-clean water chamber, and pre-water supply for supplying raw water of a predetermined water pressure to the pre-clean water chamber It is also possible to provide a front water purification apparatus that includes a front part and a front water intake unit that takes out the purified water from the front water purification chamber and sends it to the water supply unit. Although it does not specifically limit as an activated carbon member, A porous body, a powder form, a granular form, etc. can be illustrated. In the pre-treatment water purification chamber, the water purification of the water source is mainly performed as pre-purification (free chlorine, dust, organic matter, lead, etc.) to stabilize the electrolysis in the subsequent electrolysis chamber and at the same time by electrolysis. It is possible to suppress the generation of harmful substances (mainly organic chlorine compounds) and to reduce the load of the activated carbon porous body in the subsequent water purification chamber and extend the life of purification adsorption. A large amount of water can be formed. That is, the activated carbon porous body in the subsequent water purification chamber can mainly store hydrogen gas.

As described above in detail, according to the electrolytic hydrogen water generator according to the present invention, high concentration hydrogen water can be stably supplied for a long time, and the excellent effect that the adhesion of calcium carbonate to the activated carbon porous body is almost eliminated. Play. Further, by supplying a rectangular wave AC voltage of 10 ⁻⁴ to 10 ⁻¹ Hz to the electrode for electrolysis, it is possible to prevent adhesion of calcium carbonate to the electrode, increase electrolysis efficiency, and stabilize the electrolysis reaction. . Furthermore, by applying a positive voltage in a voltage range of 1 V or more and no electrolysis to the activated carbon porous body, there is an effect that the performance of collecting microorganisms can be improved without precipitating calcium carbonate on the surface of the porous body. is there.

An apparatus for generating hydrogen water by dissolving hydrogen gas generated by electrolysis in raw water, and applying an electrolysis voltage to a water storage container, an electrode for electrolysis stored in the water storage container, and the electrode for electrolysis A feeding unit; and an activated carbon porous body to which the electrolysis voltage is not applied, which is housed in the water storage container so as to be separated from the electrolysis electrode and extend above the upper end of the electrolysis electrode; A water supply unit that supplies raw water at a hydraulic pressure; and a water intake unit that extracts hydrogen water from the water storage container. Hydrogen gas generated at the electrode for electrolysis by bringing both electrodes close to each other so that the separation distance between the electrode for electrolysis and the activated carbon porous body does not exceed 100 mm in the left-right direction at the shortest part and does not exceed 100 mm in the vertical direction As soon as it starts to float, it can come into contact with the surface of the activated carbon porous body. A pressure valve for holding the inside of the water storage container in a pressurized state is provided in the water intake. The feeding unit is a constant current power source for electrolysis that outputs a rectangular wave AC voltage of 10 ⁻⁴ to 10 ⁻¹ Hz to the electrode for electrolysis and that automatically changes the rectangular wave AC voltage so as to keep the electrolysis current constant. .

  An electrolytic hydrogen water generator 1 of Example 1 shown in FIG. 1 includes a water electrolysis unit 2 and a power feeding device 3. The water electrolysis unit 2 includes a water storage container 5 that stores tap water as raw water 4, a water supply unit 6 that supplies the raw water 4 to the water storage container 5, and a water intake unit 8 that extracts hydrogen water 7 from the water storage container 5. ing. The water storage container 5 is integrally formed of a resin-based material into an upper and lower two-chamber structure, and is divided into a small volume electrolysis chamber 9 on the upstream side and a large volume water purification chamber 10 on the downstream side on the upper side. Each has. Both chambers 9 and 10 communicate with each other via a communication port 23.

  In the electrolysis chamber 9, a pair (or a plurality of pairs) of electrolysis electrodes 11 that electrolyze the raw water 4 are accommodated. The electrode 11 for electrolysis is formed in a small size using a platinum-based metal material, and is disposed opposite to the electrolysis chamber 9 with a predetermined gap. In the water purification chamber 10, an activated carbon porous body 12 that purifies the raw water 4 after electrolysis is separated from the electrode 11 for electrolysis, and is electrolyzed (which is naturally due to the arrangement of the water purification material 10). The electrode 11 is housed so as to extend upward from the upper end of the electrode 11. The activated carbon porous body 12 is formed in a cylindrical shape, and has a vertically long through hole 13 in the center. Moreover, although the cylindrical outer peripheral surface 24 of the activated carbon porous body 12 is located substantially directly above the electrode 11 for electrolysis, it may be located slightly inside or outside of the electrode 11 for electrolysis.

The separation distance between the electrode 11 for electrolysis and the cylindrical outer peripheral surface 24 of the activated carbon porous body 12 is substantially 0 in the left-right direction at the shortest portion (note that the left direction in FIG. 1 (the outer direction of the cylindrical outer peripheral surface 24) or right (It may be about 30-50 mm apart in the direction (inner direction of the cylindrical outer peripheral surface 24).) And 15 mm in the vertical direction. By bringing the two close to each other in this way, the hydrogen gas generated in the electrode 11 for electrolysis can come into contact with the cylindrical outer peripheral surface 24 of the activated carbon porous body 11 as soon as it begins to float. The power supply device 3 includes an electrolytic power supply 14 as a power supply unit that continuously supplies a rectangular wave AC voltage of, for example, about 10 ⁻³ Hz to the electrode 11 for electrolysis, and 1 V to the activated carbon porous body 12. There is provided a DC power source 15 that applies a positive voltage in a voltage range that does not generate electrolysis. The electrolytic power source 14 is a constant current power source for electrolysis that automatically varies the rectangular wave AC voltage so as to keep the electrolytic current constant, and the rectangular wave AC voltage is varied within a range of 1 to 40V.

  The water supply unit 6 includes a water supply valve 16 connected to a water supply source and a water supply port 17 that opens to the bottom of the electrolysis chamber 9, and supplies the raw water 4 to the electrolysis chamber 9 with a water pressure of about 0.3 MPa · G. It is configured. The water intake unit 8 includes a water intake pipe 18 connected to the through hole 13 of the activated carbon porous body 12, a discharge port 19 for discharging the hydrogen water 7, and a pressure valve 20 for maintaining the inside of the water storage container 5 in a pressurized state. The pressure valve 20 is provided on the upstream side of the discharge port 19. As the pressure valve 20, a pressure adjusting valve capable of adjusting the set pressure in a range of 0.05 to 0.2 MPa · G is used.

In the electrolytic hydrogen water generating apparatus 1 of this embodiment, when a rectangular wave AC voltage is applied to the electrode 11 for electrolysis, the raw water 4 in the electrolysis chamber 9 is electrolyzed with a constant current determined within a range of 200 to 500 mA, for example. The rectangular AC voltage is automatically varied around 12 V, oxygen gas 21 is generated at the anode, and hydrogen gas 22 is generated at the cathode. The polarity of the electrode 11 for electrolysis changes periodically over a relatively long time (for example, 10 minutes), and oxygen gas 21 and hydrogen gas 22 are alternately generated from both the electrodes 11 for electrolysis. And these electrolytic gas floats in the water purification chamber 10 from the communication port 23, but since the electrode 11 for electrolysis and the cylindrical outer peripheral surface 24 of the activated carbon porous body 12 are close as described above, A large amount of very fine hydrogen gas can be adsorbed on the activated carbon porous body 12.

  At this time, the inside of the water storage container 5 is maintained in a pressurized state of, for example, 0.2 MPa · G by the pressure valve 20. For this reason, electrolytic gas is pressurized by the internal pressure of the container 5, is forcibly filled into the activated carbon porous body 12, and is stored in countless small spaces (see FIG. 5). In this state, when the water supply valve 16 is opened and the raw water 4 of 0.3 MPa · G is supplied, a water flow is generated inside the reservoir 5 due to the pressure difference between the water supply pressure and the pressure valve set pressure (0.1 MPa · G). The electrolytic gas stored in the activated carbon porous body 12 is entrained in the water flow. Then, under pressurized conditions of 0.2 MPa · G, the hydrogen gas bubbles are compressed to about 1/3, the surface area is about 1/9, and the volume is about 1/27 compared with the conventional raw water. 4 is forcibly dissolved.

Therefore, according to the electrolytic hydrogen water generator 1 of this embodiment, the following operational effects can be obtained.
(1) Since the activated carbon porous body 12 is not used as an electrode for electrolysis and the electrolysis of the raw water is performed by the electrode 11 for electrolysis in the electrolysis chamber 9 separated from the water purification chamber 10, the surface of the porous body 12 is There is almost no possibility of precipitation of calcium carbonate, and the filtration function of activated carbon can be maintained well for a long period of time. Further, since a metal electrode having a small surface area can be used as the electrolytic electrode 11, the voltage drop due to the resistance of the raw water 4 is reduced, and the current density can be increased by raising the electrolysis current value to about 200 to 500 mA. It is possible to generate a large amount of hydrogen gas in a short time with improved electrolysis efficiency.

(2) The activated carbon porous body 12 extends upward from the upper end of the electrode 11 for electrolysis, and since the electrode 11 for electrolysis, the activated carbon porous body 12, and the cylindrical outer peripheral surface 24 are close to each other, the activated carbon porous body 12 begins to float. A large amount of the very fine hydrogen gas can be adsorbed to the activated carbon porous body 12.

(3) Since the inside of the water storage container 5 is maintained in a pressurized state by the pressure valve 20, both the amount of electrolytic gas stored in the activated carbon porous body 12 and the dissolved hydrogen concentration of the hydrogen water 7 are increased to about three times the conventional one. And high-concentration hydrogen water 7 can be stably supplied over a long period of time.

(4) Since a very low frequency rectangular wave AC voltage is applied to the electrolytic electrode 11, the adhesion of calcium carbonate to the electrode 11 can be prevented, the electrolytic efficiency can be improved, the electrolytic reaction can be stabilized, and maintenance work can be omitted. Is possible.

(5) Since a positive voltage of 1 V or higher is constantly applied to the activated carbon porous body 12, microorganisms in the negatively charged raw water 4 can be efficiently collected, and leakage of microorganisms can be suppressed. Can be improved. Since a positive voltage is applied, there is no possibility that calcium carbonate precipitates on the surface of the activated carbon porous body 12.

The electrolytic hydrogen water generating apparatus 1 of Example 2 shown in FIG. 2 arranges the electrolysis chamber 9 overlapping the lower portion of the water purification chamber 10 and arranges the electrode 11 for electrolysis side by side under the activated carbon porous body 12. Thus, the activated carbon porous body 12 is different from the embodiment 1 in that the activated carbon porous body 12 extends upward from the upper end of the electrode 11 for electrolysis. The separation distance between the electrode 11 for electrolysis and the cylindrical outer peripheral surface 24 of the activated carbon porous body 12 is 5 mm in the left-right direction at the shortest portion and substantially 0 in the vertical direction. As soon as the hydrogen gas generated in the electrode 11 for electrolysis begins to float, it can come into contact with the cylindrical outer peripheral surface 24 of the activated carbon porous body 11. Therefore, this second embodiment can provide the same effects as those of the first embodiment.

  The electrolytic hydrogen water generator 1 of Example 3 shown in FIG. 3 is upstream of the water supply unit 6, a front water storage container 31 having a front water purification chamber 32, and a front water housed in the front water purification chamber 32. Activated carbon porous body 33, front water supply unit 34 for supplying raw water of a predetermined water pressure to front water purification chamber 32, and front water intake for removing the pre-purified water from front water purification chamber 32 and sending it to water supply unit 6 It differs from Example 1 only in the point which provided the front water purifier 30 which consists of a part 35. FIG.

  The shape of the activated carbon porous body 33 is similar to that of the activated carbon porous body 12, and no voltage is applied. However, like the activated carbon porous body 12, a positive voltage in a voltage range of 1 V or more and no electrolysis is generated. It may be applied. The pre-water supply unit 34 is provided on the outer peripheral side of the pre-activated carbon porous body 33, and the water intake unit 35 is provided on the through-hole side of the activated carbon porous body 33.

  In the pre-purification water chamber 32, by mainly performing filtration (free chlorine, dust, organic matter, lead, etc.) of raw water for pre-purification, the electrolysis in the subsequent electrolysis chamber 9 is stabilized, It is possible to suppress the generation of harmful substances (mainly organochlorine compounds) due to electrolysis, and to reduce the load on the activated carbon porous body 12 in the subsequent water purification chamber 10 to extend the life of the purification adsorption, thus making it cleaner And can form a large amount of safe hydrogen water. That is, the activated carbon porous body 12 in the subsequent water purification chamber 10 can mainly store hydrogen gas.

It is the schematic which shows the electrolytic hydrogen water generating apparatus of Example 1 which concerns on this invention. It is the schematic which shows the electrolytic hydrogen water generating apparatus of Example 2 which concerns on this invention. It is the schematic which shows the electrolytic hydrogen water generating apparatus of Example 3 which concerns on this invention. It is the schematic which shows the conventional electrolytic hydrogen water production | generation apparatus. It is the schematic which shows the composition of an activated carbon porous body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electrolytic hydrogen water production | generation apparatus 4 Raw water 5 Water storage container 6 Water supply part 7 Hydrogen water 8 Water intake part 9 Electrolytic chamber 10 Water purification room 11 Electrolytic electrode 12 Activated carbon porous body 14 Electrolytic power source 15 DC power source 20 Pressure valve 23 Communication port 24 Cylinder outer peripheral surface 30 Preliminary water purifier

Claims (9)

An apparatus for generating hydrogen water by dissolving hydrogen gas generated by electrolysis in raw water,
A water storage container,
An electrode for electrolysis stored in the water storage container;
A power feeding unit for applying an electrolysis voltage to the electrode for electrolysis;
The water storage is molded into a cylindrical shape having a cylindrical outer peripheral surface and a vertically long through hole at the center, and the cylindrical outer peripheral surface is spaced apart from the electrolysis electrode and extends above the upper end of the electrolysis electrode. Applying the electrolysis voltage stored in a container, purifies raw water after electrolysis by the electrode for electrolysis, adsorbs and stores hydrogen gas generated by the electrode for electrolysis, and dissolves the hydrogen gas in raw water Activated carbon porous body,
A water supply unit for supplying raw water having a predetermined water pressure from below to the electrode for electrolysis of the water storage container;
An electrolytic hydrogen water generating apparatus comprising: a water intake portion that extracts hydrogen water from the water storage container by a water intake pipe connected to the through hole of the activated carbon porous body . The distance between the electrode for electrolysis and the columnar outer peripheral surface of the activated carbon porous body is close to the shortest portion so that it does not exceed 100 mm in the left-right direction and does not exceed 100 mm in the up-down direction. The electrolytic hydrogen water generator according to claim 1, wherein the hydrogen gas generated at the working electrode can come into contact with the surface of the porous activated carbon as soon as it begins to float.   The electrolytic method according to claim 1 or 2, wherein the water storage container is provided with an electrolysis chamber in which the electrode for electrolysis is stored on the lower side and a water purification chamber in which the activated carbon porous body is stored on the upper side. Hydrogen water generator.   The electrolytic hydrogen water generating apparatus according to claim 1, 2, or 3, wherein a pressure valve for holding the inside of the water storage container in a pressurized state is provided in the water intake section. 5. The electrolytic hydrogen water generator according to claim 1, wherein the power feeding unit outputs a rectangular wave AC voltage of 10 ⁻⁴ to 10 ⁻¹ Hz to the electrode for electrolysis.   The electrolytic hydrogen water generator according to claim 5, wherein the power feeding unit is a constant current power source for electrolysis that automatically varies the rectangular wave AC voltage so as to keep the electrolysis current constant.   The electrolytic hydrogen water generator according to claim 6, wherein the rectangular wave AC voltage is 1 to 40V.   The electrolytic hydrogen water generator according to any one of claims 1 to 7, further comprising a DC power source that applies a positive voltage in a voltage range of 1 V or more and no electrolysis occurs to the activated carbon porous body.   Upstream from the water supply unit, a front water storage container having a front water purification chamber, a front activated carbon member housed in the front water purification chamber, and a front water supply for supplying raw water having a predetermined water pressure to the front water purification chamber The front water purification apparatus which consists of a water supply part and the front water intake part which takes out the water by which front purification was carried out from the said front water purification chamber, and sends it to the said water supply part was provided. Electrolytic hydrogen water generator.

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