JP2002066563A - Active hydrogen occluded water cleaning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an active hydrogen occluded water cleaning device which effectively forms clean water in which active hydrogen having high reduction activity is much dissolved. SOLUTION: This active hydrogen occluded water cleaning device has a cylindrical body 2, a water flow chamber 3 which is segmented by the inner wall surface of the cylindrical body, a perforated water cleaning member 5 which is housed apart an annular spacing within the water flow chamber, has conductivity and contains active carbon, a water feed section 20 which feeds raw material water to the water flow chamber, and a drain section 8 which discharges the water cleaned in the water flow chamber to the outside of the device. The gaseous hydrogen generated by electrolyzing the raw material water is dissolved in the water by using the outer peripheral surface of the perforated water cleaning member as a positive pole and the inner wall surface of the cylindrical body as a negative pole and is occluded and desorbed in the active carbon, by which the clean water having the reduction activity may be obtained. The particle diameter of the gaseous hydrogen when the gaseous hydrogen is desorbed exists within a range from a molecular diameter to 100 nm and since the particles are fine, the strong reduction power may be exhibited.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an active hydrogen storage water purifier, and more particularly, to an active hydrogen storage water purifier for efficiently producing purified water in which a large amount of active hydrogen having a high reduction activity is dissolved. The active hydrogen storage water purifier of the present invention is used for home use, medical use, business use, and the like.

[0002]

2. Description of the Related Art In recent years, in the field of alkaline ionized water generators, a technique for lowering the reduction potential, that is, applying a voltage using a corrosion-resistant material such as a platinum-plated electrode or a graphite electrode on titanium and applying electrolysis to water. Is carried out to obtain ion water generated on the negative electrode side and the positive electrode side, it is known that a low reduction potential is exhibited under the dissolution of hydrogen gas generated on the negative electrode side. According to recent empirical data, a high reduction activity is, for example, 0.6 Adm ⁻² when a higher current is given than the value of the reduction potential by saturated hydrogen itself, such as NaCl, KCl, HC
3 nm confirmed when water is electrolyzed by adding
It has been found that the case with hydrogen gas particles of ~ 1000 nm is superior. The size of the hydrogen gas particles when electrolysis is performed under normal conditions is set to 10 to 30 μm.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a water purifier for efficiently producing purified water in which a large amount of active hydrogen having a high reducing activity is dissolved.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies to obtain a water purifier that efficiently produces purified water in which a large amount of active hydrogen having a high reduction activity is dissolved. As a result, the present invention has been completed. Was. That is, the active hydrogen storage water purifier according to the first aspect of the present invention is an active hydrogen storage water purifier that dissolves hydrogen gas generated by electrolyzing raw water, absorbs and desorbs the activated carbon into purified water, and obtains purified water. , A cylindrical body, a water passage defined by an inner wall surface of the cylindrical body, and a porous water purification member that is housed in the water passage with an annular gap therebetween, has conductivity, and contains activated carbon. And a water supply section for supplying raw water to the water passage chamber and a water discharge section for discharging water purified in the water passage chamber outside to obtain purified water in which hydrogen gas having reducing activity is dissolved. It is characterized by the following.

[0005] For example, as described in claim 2, when the electrolysis is performed using the outer peripheral surface of the porous water purifying member as a positive electrode and the inner wall surface of the cylindrical body as a negative electrode, the following is obtained. . That is, the raw water in the water passage formed by the cylindrical body and the porous water purifying member opposed to the water is diffused through the raw water in the water passage whose internal pressure is increased mainly by hydrogen gas generated by electrolysis of the water. Hydrogen gas is mainly adsorbed and occluded in the micropores of activated carbon, and when draining purified water, the dynamic pressure of the raw material water passing through the porous water purification member layer is reduced, so that the hydrogen gas becomes ultra-fine particles. It is possible to obtain purified water which is desorbed and dissolved in purified water as it is, exhibits a reduction potential by hydrogen gas, and has strong reduction activity by dissolved hydrogen gas ultrafine particles.

The above-mentioned cylindrical body is usually used as a negative electrode when electrolyzing raw water, so that a material having a low hydrogen overvoltage is suitable for preventing oxidation, that is, corrosion. Many metals such as stainless steel, aluminum alloys and titanium alloys are used, but titanium alloys are preferably used from the viewpoint of corrosion resistance.

The porous water purifying member has activated carbon of a carbon-based molded body having fine holes for absorbing hydrogen gas generated by electrolysis, having a water purifying ability, and further having conductivity. . The shape of the activated carbon is not particularly limited,
Powdery, granular, or fibrous materials can be used alone or as a mixture of two or more.

The activated carbon is mixed with a resin or a clay-based binder, kneaded with water or an organic solvent, and then fired to have a porosity of 20 to 60% (preferably 40 to 60%, more preferably 40 to 60%). Is 50 to 60%), and the average pore diameter of water permeation is 0.01 to 1.0 μm (preferably 0.1 to 0.5 μm, more preferably 0.1 to 0.5 μm).
2 μm) and can be used as an activated carbon block filter. When the porosity is in this range, the water transmission pressure loss is high, and the internal pressure of gas generated in the water passage chamber easily rises. If the porosity is less than 20%, the amount of permeated water becomes too small, and if it exceeds 60%, the molding strength becomes weak, and both are not preferable. On the other hand, when the activated carbon is not molded, it can be used by being sealed in a cylindrical container.

According to a third aspect of the present invention, the porous water purifying member may have a central through-hole, and the central through-hole may have a rod-like conductor with a substantially coaxial ring-shaped gap. . As the material of the rod-shaped conductor, titanium or the like which is not easily corroded is preferably used. In this structure,
The raw water can be electrolyzed using the rod-shaped conductor as a positive electrode and the peripheral wall of the central through-hole facing the rod-shaped conductor as a negative electrode (see claim 4). In this case, the rod-shaped conductor is polarized positively and the peripheral wall of the central through-hole is polarized negatively and electrolyzed without being directly applied to the porous water purification member having the rod-shaped conductor as the axis.

[0010] Further, the tap water can be electrolyzed by reversing the polarity of the electrode. In other words, the rod-shaped conductor can be a negative electrode and the peripheral wall of the through hole can be a positive electrode, and the inner wall surface of the cylindrical body can be a positive electrode, The raw water can also be electrolyzed by using the outer peripheral surface of the member as a negative electrode, the peripheral wall of the central through hole of the porous water purification member as a positive electrode, and the rod-shaped conductor as a negative electrode.

The particle diameter of the hydrogen gas when the hydrogen gas is adsorbed on the pores of the activated carbon and then desorbed may be in the range of the molecular diameter to 100 nm. By using such fine particles, a high internal energy can be obtained and a strong reducing power can be exhibited.

The applied voltage at the time of the electrolysis is defined in claim 8
As shown in the above, the pressure can be equal to or higher than the hydrogen generation overvoltage and equal to or lower than the oxygen generation overvoltage. The applied voltage is 0.5 to 6.0 V (preferably 0.9 to 3.0 V, more preferably 0.9 to 1.5 V).
The potential between the cylindrical body and the polarized porous water purification member is 0.5 to 3.0 V, and the potential between the rod-shaped conductor and the peripheral wall of the porous water purification member center through hole is 0.5 to 3.0 V. 3.0
V. The value of the current at the time of the electrolysis is 5 to 100 mA (preferably 5 to 50 mA, more preferably 10 to 30 mA), as described in claim 10.
It can be.

When the active hydrogen storage water purifier of the present invention has been used for a long period of time, a cationized substance such as calcium contained in the raw water before purification adheres to and accumulates on each negative electrode side to form an insulating film. Can stop the electrolysis in the furnace, so that the generation of hydroxide ion, which is a reactant to calcium bicarbonate that generates calcium carbonate, which is expected to be an adhering substance, can be suppressed as much as possible. The voltage is in the range of 0.9 V to 1.5 V and the current is 10 m
Within the range of A to 30 mA, the amount of adhesion can be extremely reduced even after long-term use.

The active hydrogen storage water purifier of the present invention is described in claim 1.
As shown in 1, it can be used for drinking or bath purification.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be specifically described with reference to examples. (1) Structure of the water purifier FIG. 1 shows a vertical cross-sectional view of the water purifier of the present embodiment, and FIG. 2 shows the water purifier viewed from above. The water purifier of this embodiment is a faucet-attached water purifier 1 and is a SUS31 made into a cylindrical shape.
A cylindrical body 2 having a cylindrical portion 10 (having a thickness of 0.8 mm) made of 6
And an upper cover 11 made of SUS316 (having a thickness of 0.1 mm) formed into a mirror plate shape and welded to close the axial end opening of the cylindrical portion 10.
8 mm) and SUS30 for closing the axial end opening of the cylindrical portion 10
A pressure vessel is formed with four disc-shaped holding plates 12 (2.0 mm thick). A water supply unit 20 is provided on the outer side of the tubular portion 10 of the tubular body 2 and is attached to a tip of a faucet, provided with a water supply passage 20a, and a switching cock 21 for selecting raw water or water supply to a water purifier is connected. . Tube part 10
A porous water purifying member (activated carbon block filter) 5 in which a filter cloth 4 whose surface is raised is wound three times is formed substantially concentrically around a rod-shaped conductor 7 in a central through-hole 6 therein. Are located. The porous water purification member 5 is a porous molded body having a central through-hole 6, and a kneaded product of fine powdered activated carbon and a clay-based binder has a porosity of 20 to 60%.
It is pressure-formed and fired so that The porous water purification member 5 has upper and lower end faces held by protective caps 14 and is held by an upper lid 11 fitted into the central through hole 6 and an umbrella nut 9 made of insulating resin. A pressure-resistant plate 16, a metal reinforcing plate 13, and a pressing plate 12 are applied to the lower side of the porous water purification member 5 below the protective cap 14, and the rod-shaped conductor 7 is connected to an electrode spring 25 and a positive terminal 2.
4 and is fixed to the electrical component pack 22. Further, a leaf spring 23 is applied to energize the cylindrical body 2.

It is confirmed that the raw water is filled in the water passage chamber 3 through the water supply passage 20a, penetrates and passes through the filter cloth 4, and enters the inside of the activated carbon block filter in the porous water purification member 5.
A DC voltage (1.4 V) was applied to the cylindrical body 2 and the rod-shaped conductor 7 via the positive terminal 24 of the positive electrode and the leaf spring 23 of the negative electrode. The outer peripheral surface of the porous water purification member 5 is a positive electrode, which is the opposite electrode of the inner wall surface of the cylindrical body 2 of the negative electrode, and the peripheral wall of the central through-hole 6, which faces the rod-shaped conductor 7 of the positive electrode, is the negative electrode. While the raw water is purified in the permeation layer in the activated carbon block filter, the hydrogen gas mainly generated by the electrolysis dissolves, and a part of the gas becomes bubbles, so that the internal pressure of the water passage chamber 3 increases. The umbrella nut 9 is pushed out into the through hole 6 and is located at the top of the water purifier 1.
Through the drainage section 8 through the opening 9c. The water permeation pores in the activated carbon block filter have an average of 0.15 μm and a porosity of 40%, have a very large pressure loss, and require a large pressure to push out water in the permeation layer of the activated carbon block filter. . Therefore, the retained gas that is not involved in the electrolysis in the water passage chamber 3 mainly dissolves hydrogen gas more largely than dissolution under atmospheric pressure, and further diffuses and adsorbs hydrogen gas into activated carbon pores. Rise to a considerable amount, leading to occlusion.

The amount of hydrogen gas absorbed by the activated carbon block filter in a dry state was examined using ASAP (manufactured by Shimadzu Corporation), and the result was as shown in FIG. Next, a digital micro pressure gauge was set up in the water passage chamber 3 and the pressure change in the water passage chamber 3 was examined without drainage, and the results are as shown in Table 1. From Table 1, 0.351 kgf / cm for 150 minutes
^{Since the} peak was at ² and then decreased, it is considered that the water was pushed out by the pressure of the hydrogen gas, the water was displaced, and the permeation hole was completely passed by the hydrogen gas. This means that the atmospheric pressure was maintained for about three hours when the pressure began to decrease, and that the hydrogen gas was absorbed by 530 cc / g, which was a 32% increase from the initial level, in the graph of FIG. In order to desorb the gas once adsorbed, it is necessary to apply energy from the outside such as decompression and heating. However, when water continuously passes through the permeable layer, the pressure of the outer peripheral surface 4 m of the porous water purification member is reduced. No matter how high the pressure is, it is appropriate to judge that the hydraulic pressure in the permeable layer decreases, so that the occluded gas is desorbed by the reduced pressure.

[0018]

[Table 1]

Next, in order to trace the vicinity of the applied voltage in this embodiment, the dimensions of the electrolytic surface are set to the cylindrical body 2 and the inner diameter is set to 80 m.
mx 110 mm in height, the outer diameter of the activated carbon block filter was 70 mm x 100 mm in height. After 5 hours from the application, the amount of gas generated in the purified water was examined.
It was shown to.

[0020]

[Table 2]

Table 2 shows that the amount of dissolved hydrogen gas in the waste water is extremely small, but is reliably generated in the applied voltage range of 6 V to 1.5 V, and almost no oxygen gas is generated. . In natural water, oxygen is 10 mg / L.
The dissolved oxygen amount was reduced, but the amount of dissolved oxygen was reduced in the range of 1 to 6 V due to discharge to the outside of the system by bubbling with hydrogen gas or reduction or the like. In such a situation where the reduction potential is negative, even if it is continuously drained, it exceeds 30 L before it reaches ± 0. Therefore, it can be considered that the absorbed hydrogen gas is desorbed and dissolved in the permeated water every time.

The present invention is not limited to the above embodiment, but can take various forms depending on the purpose. For example, a form in which the water purifier main body has few protrusions, that is, a form in which a water supply unit 20 for taking in raw water is provided on the upper side of the water purifier main body (FIG.
Reference). Further, as shown in FIG. 5, the water supply unit may be provided at two places, or may be provided with more water supply units. Further, the position of the drainage section is not limited, and may be provided on the lower side of the water purifier main body. The water purifier may be not only vertically placed but also horizontally (see FIG. 5). In the case of the horizontal installation as shown in FIG. 5, it can be installed with the base 29. In the water purifier shown in FIG. 1, the umbrella nut 9 is electrically connected to the tubular body 2 as a metal conductor to form a negative electrode, and the positive electrode can be directly applied to the activated carbon block filter.

[0023]

According to the active hydrogen storage water purifier of the present invention,
By directly applying a DC voltage to the raw water in the water passage compartment defined by the inner wall surface of the cylindrical body, the electrolysis of the raw water proceeds efficiently. In addition, the water impregnated in the activated carbon block filter becomes a permeation resistance, and the pressure of the water passage chamber rises due to the hydrogen gas generated during closing, which is advantageous for the adsorption of the hydrogen gas to the activated carbon block filter, and conversely, the water At the time of permeation, the hydraulic pressure is reduced, and the occluded hydrogen gas is desorbed by the reduced pressure. At that time, when the ultrafine hydrogen particles adsorbed in the fine pores of the activated carbon are desorbed and dissolved in purified water, it is assumed that they maintain the same size as at the time of adsorption, so they have extremely high reduction activity, For active oxygen, etc.
It can be the most effective antioxidant. Such an effective antioxidant effect can be applied not only to drinking but also to hot water for bathing.

[Brief description of the drawings]

FIG. 1 is an explanatory longitudinal sectional view showing a faucet-mounted water purifier used in an embodiment.

FIG. 2 is an explanatory plan view showing a faucet-mounted water purifier used in the embodiment.

FIG. 3 is a graph showing the relationship between the pressure applied to an activated carbon block filter and the amount of stored hydrogen.

FIG. 4 is an explanatory sectional view of an undersink type showing another water purifier of the present invention.

FIG. 5 is an explanatory cross-sectional view of a horizontally disposed plural water purification type showing another water purifier of the present invention.

[Explanation of symbols]

1; active hydrogen storage water purifier; 2; tubular body; 2a; O-ring; 2b; O-ring groove; 2m; inner wall surface of tubular body;
Water passage chamber, 4; filter cloth, 5; porous water purification member, 5s; outer peripheral surface of porous water purification member, 5m; central through-hole peripheral wall, 6; central through-hole, 7; rod-shaped conductor, 7a; ; Drainage section,
9; umbrella nut, 9c; opening of umbrella nut, 10;
11; upper lid, 12; holding plate, 13; metal reinforcing plate, 14;
Protective cap, 15; shaft end opening, 16; pressure plate, 17;
Outgoing path, 18; O-ring, 19; mating surface, 20; water supply section, 20a; water supply path, 21; switching cock, 22; electric pack, 23; leaf spring, 24; positive terminal, 25; electrode spring, 26; Lid, 27; back, 28; shelf, 29;
Foundation.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/68 540 C02F 1/68 540E C25B 1/04 C25B 1/04 9/00 13/04 302 13 / 04 302 15/02 302 15/02 302 9/00 A F term (reference) 4D061 DA03 DA07 DB20 EA02 EB01 EB23 EB29 EB30 EB34 EB39 GC12 GC14 4K021 AA01 BA02 BC01 CA09 DA05 DA10 DA15 DB40 DC03

Claims (11)

[Claims] 1. An active hydrogen storage water purifier that dissolves hydrogen gas generated by electrolyzing raw water and occludes and desorbs activated carbon to obtain purified water, comprising: a tubular body; A water passage compartment defined by a wall surface, a porous water purification member that is housed in the water passage compartment with an annular gap therebetween, has conductivity and contains activated carbon, and supplies raw water to the water passage compartment An active hydrogen storage water purifier, comprising: a water supply unit; and a drainage unit that discharges water purified in the water passage chamber to the outside to obtain purified water in which hydrogen gas having reducing activity is dissolved. 2. The electrolysis is performed using the outer peripheral surface of the porous water purification member as a positive electrode and the inner wall surface of the tubular body as a negative electrode.
The described active hydrogen storage water purifier. 3. The active hydrogen storage water purifier according to claim 1, wherein the porous water purification member has a central through-hole, and the central through-hole has a rod-shaped conductor substantially coaxially with a ring-shaped gap therebetween. . 4. The active hydrogen storage water purifier according to claim 3, wherein the rod-shaped conductor is used as a positive electrode and the peripheral wall of the central through hole facing the rod-shaped conductor is used as a negative electrode. 5. The active hydrogen storage water purifier according to claim 3, wherein the rod-shaped conductor is used as a negative electrode and the peripheral wall of the central through hole facing the rod-shaped conductor is used as a positive electrode. 6. The electrolysis wherein the inner wall surface of the tubular body is a positive electrode, the outer peripheral surface of the porous water purification member is a negative electrode, the peripheral wall of the central through-hole of the porous water purification member is a positive electrode, and the rod-shaped conductor is a negative electrode.
Or the water purifier according to any one of 3. 7. The water purifier according to claim 1, wherein a particle diameter of the hydrogen gas when the hydrogen gas adsorbed on the activated carbon is desorbed is in a range of 100 nm from a molecular diameter. 8. The active hydrogen storage water purifier according to claim 1, wherein an applied voltage at the time of the electrolysis is not less than a hydrogen generation overvoltage and not more than an oxygen generation overvoltage. 9. The voltage applied during the electrolysis is 0.5 to
6.0 V, the electric potential between the cylindrical body and the polarized porous water purification member is 0.5 to 3.0 V, and the electric potential between the rod-shaped conductor and the peripheral wall of the central through-hole of the porous water purification member is 0. .5
The active hydrogen storage water purifier according to any one of claims 1 to 8, wherein the voltage is from 3.0 V to 3.0 V. 10. The current value during the electrolysis is 5 to 10
The active hydrogen storage water purifier according to any one of claims 1 to 9, wherein the water purity is 0 mA. 11. The active hydrogen storage water purifier according to claim 1, which is used for drinking or bath purification.