JP2911380B2 - Hydrogen / oxygen generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a solid electrolyte membrane as a diaphragm, and performs electrolysis while supplying pure water to the anode side.
The present invention relates to a hydrogen / oxygen generator for generating oxygen gas from an anode side and hydrogen gas from a cathode side.

[0002]

2. Description of the Related Art Conventionally, this type of hydrogen / oxygen generator has a structure as shown in FIG. 10 when applied to a large-scale facility such as when a large amount of oxygen gas or hydrogen gas is required. A so-called "bipolar filter press type electrolyzer" has been proposed ("New Edition Electrochemical Handbook",
Ed., Electrochemical Association, published by Maruzen Co., Ltd., 2nd edition, 4th edition
Printing, page 733).

[0003] This apparatus comprises a solid electrolyte membrane 110, for example,
A cation exchange membrane (fluororesin sulfonic acid cation exchange membrane, for example, “Nafion 117” manufactured by DuPont);
Mesh-shaped porous feeders 111 and 112 made of a white metal group metal or the like attached to both sides thereof, and both porous feeders 111 and 11
A plurality of solid electrolyte membrane units 120, 120 each composed of a bipolar electrode plate 113 disposed outside the unit 2 are arranged such that each unit is overlapped so as to constitute a large number. The bipolar electrode plate 113 is a single electrode plate in which the surface and the back surface of the electrode plate have the opposite potential when a current is supplied.

That is, in this case, by electrolyzing while supplying water to the anode side, 2H ₂ O →
A reaction such as O ₂ + 4H ⁺ + 4e ⁻ occurs to generate oxygen gas, and a reaction of 4H ⁺ + 4e ⁻ → 2H ₂ occurs on the cathode side to generate hydrogen gas.

The solid electrolyte membrane units 120, 120
The pure water supply paths 115, 115 for supplying pure water to the porous feeders 111, 111 on the anode side of the solid electrolyte membrane units 120, 120 and the porous feeders 11 on the anode side of the solid electrolyte membrane units 120, 120 are provided.
1 and 111 are provided with oxygen gas extraction paths 116 and 116 for extracting oxygen gas (including water), and hydrogen gas (including water) is supplied from the porous feeders 112 and 112 on the cathode side of the solid electrolyte membrane units 120 and 120. ) Is provided with hydrogen gas extraction paths 117, 117 for extracting the hydrogen gas.

[0006]

However, as described above, a "bipolar filter press type electrolysis apparatus" is used.
In this case, the porous feeders 11 1, 111 arranged on one side of the porous feeders 111, 111 on the anode side
Oxygen gas extraction path arranged on the other side of 1, 111
Pure water and oxygen gas generated on the anode side flow toward 116,116.

In general, the shape of the porous feeders 111, 111 is disk-shaped, and therefore, as shown in FIG.
The cross-sectional area of the flow path through which pure water and oxygen gas flow increases once, and then the cross-sectional area at the outlet side becomes the oxygen gas extraction path.
Since the flow rate decreases near 116, the resistance of the flow increases. The same is true on the cathode side. If the flow resistance increases, the electric energy required for electrolysis also increases, and the efficiency of the entire device deteriorates.

As a method for solving such a problem, as disclosed in Japanese Patent Publication No. 63-502908 and Japanese Patent Application Laid-Open No. 06-033283, the center of the hydrogen / oxygen generator is axially disposed.
A water supply path is provided, and water and hydrogen generated from the cathode plate are taken out from a flow path provided in an axial direction at a peripheral portion thereof, and an axial direction is provided between a cylindrical housing (casing) and a cell outer peripheral portion. There is disclosed a hydrogen / oxygen generator configured to extract oxygen and water generated from an anode plate through a provided jacket.

However, these hydrogen / oxygen generators require a jacket for extracting oxygen and water, and thus require a complicated structure such as a casing, a seal member, and a jacket.

In the present invention, in consideration of such circumstances, the electric energy required for electrolysis can be minimized without increasing the resistance of the flow of pure water, oxygen gas, and hydrogen gas. It is an object of the present invention to provide a simple and efficient hydrogen / oxygen generator that does not require a complicated configuration such as a casing, a sealing member, and a jacket as in the related art.

[0011]

SUMMARY OF THE INVENTION The present invention has been made in order to achieve the above-mentioned objects and objects of the prior art, and has the following (1) to (3). It is assumed that.

(1) A plurality of solid electrolyte membranes, a porous feeder provided on both sides of the solid electrolyte membrane, and an electrode plate disposed outside the porous feeders and acting as both an anode and a cathode. A bipolar hydrogen / oxygen generator having a structure in which a plurality of solid electrolyte membrane units are stacked, wherein a pure water supply path communicating with each of the solid electrolyte membrane units in an axial direction is formed, and both surfaces of each of the electrode plates are formed. Respectively, an anode chamber and a cathode chamber are formed, accommodating a porous feeder, and inside each of the electrode plates, a pure water supply system for the anode chamber from the pure water supply system to the anode chamber is formed. and, wherein in the electrode plates, and Katachi設hydrogen gas collecting chamber which is open at the surface of the radially outer than said cathode chamber,
A hydrogen gas passage extending from the cathode chamber to the hydrogen gas collecting chamber is formed inside each of the electrode plates, and hydrogen gas is provided in the hydrogen gas collecting chamber formed in each of the electrode plates in an axial direction. An extraction path is formed, and an oxygen gas collection chamber is formed on the surface of each of the electrode plates radially outward from the anode chamber. The anode chamber is provided inside each of the electrode plates. An oxygen gas passage extending from the oxygen gas collection chamber to the oxygen gas collection chamber, and an oxygen gas extraction path axially communicating with the oxygen gas collection chamber formed on each of the electrode plates. Hydrogen / oxygen generator.

(2) The hydrogen / oxygen generator according to the above (1), wherein the solid electrolyte membrane is a solid polymer electrolyte membrane.

(3) The hydrogen / oxygen generator according to the above (1) or (2), wherein the pure water supply path is formed near the center of each solid electrolyte membrane unit. .

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a partial longitudinal sectional view of one embodiment of the hydrogen / oxygen generator of the present invention, and is a longitudinal sectional view showing only one side with respect to the center axis thereof. 2 is a cross-sectional view taken along the line AA in FIG. 1, FIG. 3 is a partial vertical cross-sectional view taken along the line A1-A1 ′ in FIG. 5 is a partial longitudinal sectional view taken along line A2-A2 'of FIG. 2, and FIG. 5 is a partial longitudinal sectional view taken along line A3-A3' of FIG.

In FIG. 1 and FIG. 2, numeral 1 indicates the hydrogen / oxygen generator of the present invention as a whole. The hydrogen / oxygen generator 1 basically includes an annular solid electrolyte membrane 10, annular porous power feeders 20, 20 attached to both surfaces thereof, and upper and lower porous feeders 20, 20. It has a structure in which a plurality of annular solid electrolyte membrane units 40, 40 each including a ring-shaped electrode plate 30 that performs both functions of a ring-shaped anode and a cathode are arranged in parallel. The hydrogen / oxygen generator 1 is preferably used in a vertical relationship as shown in FIG. 1;

A pure water supply path 50 communicating with the solid electrolyte membrane unit 40 in the axial direction is formed in the vicinity of the center of each solid electrolyte membrane unit 40.
The central holes 22, 22 of the porous feeders 20, 20, the solid electrolyte membrane 10
And extends through the central hole portion 12. Also, the electrode plate
An O-ring-shaped seal member 60 is provided around a central hole 32 on the upper surface of 30, and a pure water supply path 50 and a cathode chamber 34 are provided.
Are isolated.

Further, each electrode plate 30 is a bipolar electrode plate, which is a single electrode plate whose front and back surfaces have the opposite potential when a current is supplied, and which is on the anode side. On the (lower side in FIG. 1) side, an annular recessed anode chamber 36 is formed radially outward with respect to the pure water supply path 50.
The porous power supply body 20 on the anode side is housed in the housing. On the other hand, on the cathode side (upper side in FIG. 1), an annular concave cathode chamber is provided radially outward with respect to the pure water supply path 50.
A cathode power supply 20 is accommodated in the cathode chamber.

As shown in FIGS. 1, 2 and 5, a plurality of electrode plates 30 are provided radially from the inner peripheral wall of the central hole portion 32. An anode chamber pure water supply path 36a, 36a leading to the chamber 36 is formed.
Further, a plurality of substantially U-shaped oxygen gas passages 36b, 36b are radially formed outside the anode chamber 36 in the radial direction, and the end portions thereof are connected to the cathode near the outer periphery of the electrode plate 30. It communicates with an annular oxygen gas collecting chamber 36c formed on the side surface. In this case, the oxygen gas collecting chamber 36c is
And an annular groove 36c ', 36c' formed on the end face 36d of another electrode plate 30 adjacent to the electrode plate 30 and a seal member 36e formed of two O-rings around its periphery. ,
36f is provided, which is sealed so that water and generated oxygen gas do not leak from the oxygen gas collecting chamber 36c. The oxygen gas collecting chambers 36c, 36c provided on each of the electrode plates 30 are axially shifted from the pure water supply paths 36a, 36a for the anode chamber at a central angle. , 36c are connected to an oxygen gas extraction path 31 formed so as to communicate with them (see FIGS. 1, 2 and 5).

In this case, in this embodiment, the anode chamber pure water supply path 36a is provided at the position of the cross section A3-A3 'in FIG. 2, but it is not particularly limited to this cross section. ,
It can be provided at the position of the A1-A1 'cross section or A2-A2' cross section in FIG.

On the other hand, as shown in FIG. 1, FIG. 2, and FIG. 3, a substantially U-shaped hydrogen gas path 34b, 34b is provided in each electrode plate 30 inside the outer peripheral end of the cathode chamber 34. At the position deviated from the above-described anode chamber pure water supply paths 36a, 36a at the center angle, a plurality of radially shaped parts are formed,
The electrode plate 30 is communicated with an annular concave hydrogen gas collecting chamber 34c formed on the anode side surface near the outer peripheral portion of the electrode plate 30. In addition,
In this case, the hydrogen gas collecting chamber 34c is located at the end face 34d of the electrode plate 30.
And annular grooves 34c ', 34c' formed on the end face 34d of the other electrode plate 30 adjacent to the electrode plate 30, and seal members 34e, 34f formed of two O-rings around the grooves. It is sealed so that water and generated hydrogen gas do not leak from the hydrogen gas collecting chamber 34c. And
The hydrogen gas collecting chambers 34c, 34c provided on each of the electrode plates 30
Is connected to a hydrogen gas take-out path 33 formed so as to communicate with the hydrogen gas collecting chambers 34c, 34c in the axial direction at a position shifted from the hydrogen gas paths 34b, 34b by a central angle.

The above various paths may be provided by drilling the electrode plate 30 with a drill or the like.
It is also possible in electric discharge machining or casting.

In this embodiment, as shown in FIG. 1, the oxygen gas collecting chamber 36c is located radially outward of the hydrogen gas collecting chamber 34c. In addition, the hydrogen gas collecting chamber 34c can be arranged radially outside the oxygen gas collecting chamber 36c. In the present embodiment, ten pure water supply paths 36a, 36a for the anode chamber and ten oxygen gas paths 34b, 34b are provided, but the number can be changed as appropriate. In the present embodiment, the electrode plate, the porous feeder, the solid electrolyte membrane, and the like have a ring shape, but the present invention is not limited to this. In addition, the pure water supply path communicates with the center of the solid electrolyte unit, but is not limited to this.

Further, as the solid electrolyte membrane 10, a solid polymer electrolyte formed into a membrane, for example, a cation exchange membrane (fluororesin sulfonic acid cation exchange membrane, for example, "Nafion 117" manufactured by DuPont) is used. It is preferable to use a “solid polymer electrolyte membrane” having a structure in which a porous anode and cathode made of a noble metal, particularly a platinum group metal, are chemically bonded by electroless plating on both surfaces. In this case, both electrodes are preferably made of platinum.
When the structure of two layers of platinum and iridium, high current density, for example, in the solid electrolyte of a conventional physical electrodes is brought into contact with the ion-exchange membrane structure, to a 50~70A / dm ² On the other hand, long-term electrolysis at 80 ° C. and 200 A / dm ² for about 4 years becomes possible. In this case, in addition to the iridium, a solid polymer electrolyte membrane having a multilayer structure in which two or more kinds of platinum group metals are plated can be used.
Higher current density can be achieved.

The solid electrolyte membrane 10 of the present application has a structure in which electrodes made of a noble metal are chemically bonded to both surfaces of a solid polymer electrolyte by electroless plating, so that water is applied between the solid polymer electrolyte and both electrodes. As there is no solution resistance and no gas resistance, the contact resistance between the solid polymer electrolyte and both electrodes is low, the voltage is low, the current distribution is uniform, high current density, high temperature water electrolysis, high pressure water Electrolysis becomes possible, and high-purity oxygen and hydrogen gas can be efficiently obtained.

In this embodiment, the diameter of the solid polymer electrolyte membrane 10 is preferably about 280 mm, and extends to the seal member 34f of the oxygen gas collecting chamber 34c, as shown in FIG. Is to seal the film so that hydrogen gas and oxygen gas generated on both surfaces of the film are not mixed.

On the other hand, the porous power supply body 20 is preferably made of a titanium mesh, for example, three layers of expanded metal and several mm thick in order to ensure air permeability. In addition, by using this porous power supply, while supplying electricity required for electrolysis from the electrode plate 30 to the platinum plating portion on the surface of the solid electrolyte membrane 10, the raw material pure water and generated oxygen and hydrogen Gas can be passed through. In addition, the porous power feeder 20 may be any material as long as it is a corrosion-resistant porous material having conductivity and air permeability. In addition to the above materials, a porous graphite material, a porous metal material, a porous conductive ceramic, and the like may be used. Is applicable.

Further, the electrode plate 30 is made of titanium when the material is metal and can have a thickness of several mm to several tens mm in order to prevent elution of metal ions into pure water. Yes, considering the dimensions of the O-ring groove, it is preferred to be about 20 mm. The material of the electrode plate 30 may be graphite in addition to titanium. In this case, the dimensions of the electrode plate are preferably equal to those of the titanium plate.

Further, in order to fasten the solid electrolyte membrane units 40, 40 side by side, as shown in FIG.
For example, disc-shaped end plates 70, 70 made of SUS304, SUS316, etc. are provided.When the solid electrolyte membrane units 40, 40 are juxtaposed, the joining between the members is performed by bonding individual electrode plates. For insulation, an insulating coating 90 (see FIG. 1) such as a polytetrafluoroethylene (PTFE) coating or an annular insulating spacer 92 (see FIG. 7) is sandwiched between the end plates 70, 70 at both ends and the electrodes at both ends. A plurality of through holes 80, 80 extending to the end plates 70, 70 at both ends of the hydrogen / oxygen generator 1 are formed with another insulating spacer 93, 94 interposed between the plates. 80 through bolt
This can be done by mounting 82, 82 and fastening with nut 84.

In this case, as shown in FIG. 6, one end plate 70 (the lower side in FIG. 6) has a plug-shaped water supply port communicating with the pure water supply path 50 at the center thereof.
52, and oxygen gas extraction path 3
1.Plug-shaped oxygen-side drain port 95 communicating with oxygen gas collection chamber 36c, hydrogen gas extraction path 33, plug-shaped hydrogen-side drain port 96 communicating with hydrogen gas collection chamber 34c
Is provided. In this case, the end plate 70
Inside the oxygen gas collecting chamber 36c, hydrogen gas collecting chamber 34c
An annular oxygen gas collecting chamber 76c and a hydrogen gas collecting chamber 74c are provided to correspond to the above.

Further, the other end plate 70 (upper side in FIG. 6) has a plug-shaped oxygen gas outlet 9 communicating with the oxygen gas outlet path 31 and the oxygen gas collecting chamber 36c.
7. A plug-shaped hydrogen gas outlet 98 communicating with the hydrogen gas outlet path 33 and the hydrogen gas collecting chamber 34c is provided. Further, the other end plate 70 (upper side in FIG. 6) is provided at the other end of the pure water supply path 50 (that is, at the water supply port).
Pure water supply path for anode chamber of end plate 70 opposite 52
A closing lid 52 'is provided to close 36a).

The oxygen-side drain port 95, the hydrogen-side drain port 96, the oxygen gas outlet 97, and the hydrogen gas outlet 98 are each one or two or more in the circumferential direction at an appropriate interval. Can be provided.

FIG. 8 shows the solid electrolyte membrane unit 4 described above.
FIG. 10 is a partial cross-sectional view showing another embodiment in which 0,40 are fastened side by side, where the diameter of end plates 70 ′, 70 ′ at both ends is larger than the electrode plate 30, and Multiple through holes
Drill 80 ', 80', and penetrate through holes 80 ', 80'
82 ', 82' are mounted and fastened by nuts 84 '. This eliminates the need to provide a through hole for bolt fastening in the electrode plate 30, the insulating spacer 92, and the like, and facilitates manufacturing.

Although not shown, the current is supplied to the electrode plates at both ends so that the current application ends protrude outward from the outer periphery of the electrode plates, and are connected thereto.

FIG. 9 is a sectional view similar to FIG. 2 of another embodiment of the hydrogen / oxygen generator of the present invention. Members similar to those in the first embodiment are indicated by reference numerals with 100 added. The difference from the above-described first embodiment is that the oxygen gas collecting chamber 36c is not made annular, but is made into an independent cylindrical oxygen gas collecting chamber 136c, 136c. , 136c, and each oxygen gas collecting chamber
An O-ring 136e is disposed around each of the 136c to seal the oxygen gas extraction path 131. Similarly, instead of making the hydrogen gas collecting chamber 34c annular, each of the hydrogen gas collecting chambers 134 has an independent cylindrical shape.
c, 134c, and the respective hydrogen gas collecting chambers 134c, 134c, and O-rings 134e are disposed around each of the oxygen gas collecting chambers 134c to seal the hydrogen gas extraction path 133. Is configured. In this case, although not shown, an annular oxygen gas collecting chamber,
Hydrogen gas collecting chambers are respectively formed, and oxygen gas and hydrogen gas from the plurality of gas collecting chambers are respectively taken out from one oxygen gas outlet and hydrogen gas outlet. It is not necessary to provide many outlets,

The structure is simplified.

In the hydrogen / oxygen generator 1 of the present invention thus configured, first, the central hole 12 of the solid electrolyte membrane 10 is supplied from a pure water supply system (not shown) through a pure water supply path 50. Through,
In order to supply pure water to the solid electrolyte membrane 10, the water flows radially outward of the porous power supply 20 in the anode chamber 36.

Then, the supplied pure water is electrolyzed by the solid electrolyte membrane 10 on the anode side, and 2H ₂ O → O ₂ + 4H ⁺
+ 4e ^- The reaction takes place, such as, oxygen gas is generated, oxygen gas path 36b, through 36b, the oxygen gas collecting chamber 36c, and an oxygen gas extraction passage 31, the water and the generated oxygen gas is withdrawn, the oxygen gas Oxygen gas is collected in a gas-liquid separation device (not shown) connected to the extraction path 31.

On the other hand, on the cathode side, the solid electrolyte membrane 10
Through which H ⁺ passes, and is supplied with e− on the cathode side,
4H ^{+ +} 4e ^- → the reaction of 2H ₂ is occurs hydrogen gas generated, the hydrogen gas path 34b, 34b, via a hydrogen gas collection chamber 34c, and a hydrogen gas taking-out passage 33, the water and the generated hydrogen gas is removed, Hydrogen gas is collected in a gas-liquid separation device (not shown) connected to the hydrogen gas extraction path 33. In addition,
In this case, in the electrode plate 30, from the pure water supply path 50,
Pure water is supplied to the anode chamber 36 for electrolysis via the anode chamber pure water supply paths 36a, 36a radially provided from the inner peripheral wall of the central hole 32. I have.

[0040]

According to the hydrogen / oxygen generator of the present invention,
This is an extremely excellent invention having remarkable and unique effects as shown below.

(1) The anode chamber 36 in which the gap is kept constant between the electrode plates 30, that is, the porous feeder 20 on the anode side
Since pure water can flow radially outward by supplying pure water from the center, the pure water flows radially outward while reducing the flow velocity, that is, toward the outer periphery, while the solid on the anode side The oxygen gas generated in the electrolyte membrane 10 is
Since the gas flows in the outer circumferential direction in the anode chamber 36 having the increased cross-sectional area in the flow direction, the flow resistance is very low. Therefore,
Since the flow resistance is low, the decomposition voltage required for the electrolysis is also low, the electric energy required for the electrolysis is reduced, and as a result, the efficiency of the present device is greatly improved. This is the same on the cathode side.

(2) Since the anode chamber 36 is provided on the lower surface of the electrode plate 30, the generated oxygen gas flows on the upper surface of pure water and the pure water flows on the lower surface separately. (3) In addition, the oxygen gas path 36b,
36b, oxygen gas collection chamber 36c, and oxygen gas extraction path
31 is provided on the cathode side with a hydrogen gas path 34b, 34b, a hydrogen gas collecting chamber 34c, and a hydrogen gas takeout path 33 to take out oxygen gas and hydrogen gas, respectively. A simple and efficient hydrogen / oxygen generator can be provided without requiring a complicated structure such as a seal member and a jacket.

(4) The solid polymer electrolyte membrane of the present invention has a structure in which electrodes made of a noble metal are chemically bonded to both surfaces of the solid polymer electrolyte by electroless plating. Since there is no water in between, there is no solution resistance or gas resistance, so the contact resistance between the solid polymer electrolyte and the electrode is low, the voltage is low, the current distribution is uniform, the high current density, high temperature water electrolysis, High-pressure water electrolysis becomes possible, and high-purity oxygen and hydrogen gas can be efficiently obtained.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view of one embodiment of a hydrogen / oxygen generator of the present invention, and is a longitudinal sectional view showing only one side with respect to a center axis thereof. This corresponds to a vertical sectional view taken along line A3-A3 '.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a partial longitudinal sectional view taken along line A1-A1 ′ of FIG. 2;

FIG. 4 is a partial vertical sectional view taken along line A2-A2 ′ of FIG. 2;

FIG. 5 is a partial longitudinal sectional view taken along line A3-A3 ′ of FIG. 2;

FIG. 6 is a partial longitudinal sectional view illustrating a state in which the solid electrolyte membrane units of the present invention are juxtaposed and fastened to constitute a hydrogen / oxygen generator.

FIG. 7 is a partially enlarged cross-sectional view of FIG. 1 showing a state where an annular insulating spacer is sandwiched between electrode plates.

FIG. 8 is a partial longitudinal sectional view illustrating a state of another embodiment in which the solid electrolyte membrane units of the present invention are arranged and fastened to form a hydrogen / oxygen generator.

FIG. 9 is a sectional view similar to FIG. 2 of another embodiment of the hydrogen / oxygen generator of the present invention.

FIG. 10 is a cross-sectional view schematically showing a conventional bipolar filter press type hydrogen / oxygen generator.

FIG. 11 is a schematic diagram showing flows of water and gas in a conventional bipolar-type filter press type hydrogen / oxygen generator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Hydrogen / oxygen generator 10 ... Solid electrolyte membrane 12 ... Central hole of solid electrolyte membrane 20 ... Porous feeder 22 ... Central hole of porous feeder 30 ... Electrode plate 31 ... Oxygen gas extraction path 32 ... Electrode Central hole of plate 33 ... Hydrogen gas extraction path 34 ... Cathode chamber 34b ... Hydrogen gas path 34c ... Hydrogen gas collection chamber 34c '... Groove 34d ... End face 34e, 34f ... Seal member 36 ... Anode chamber 36a ... Pure for anode chamber Water supply path 36b ... oxygen gas path 36c ... oxygen gas collecting chamber 36c '... groove 36d ... end face 36e, 36f ... seal member 40 ... solid electrolyte membrane unit 50 ... pure water supply path 60 ... seal member 70 ... end plate 80 ... Through hole 82… Bolt bolt 84… Nut 110… Solid electrolyte membrane 111,112… Porous feeder 113… Dipolar electrode plate 115… Pure water supply path 116… Oxygen gas extraction path 117… Hydrogen gas extraction path 120… Solid electrolyte membrane unit

Continued on the front page (72) Inventor Mamoru Nagao 2-7-18-102 Idano, Higashiyodogawa-ku, Osaka-shi, Osaka (72) Inventor Takashi Sasaki 3-310 Higashi-Jiyugaoka, Shisen-cho, Miki-shi, Hyogo (72) Inventor Harada Sorayuki 2-25-43 Nishi-Oizumi, Nerima-ku, Tokyo (58) Field surveyed (Int. Cl. ⁶ , DB name) C25B 1/00-15/08

Claims (3)

(57) [Claims] 1. A plurality of solid electrolyte membranes comprising: a solid electrolyte membrane; a porous feeder provided on both sides thereof; and an electrode plate disposed outside the porous feeders and acting as both an anode and a cathode. Dipolar hydrogen with a structure in which solid electrolyte membrane units of
An oxygen generator, wherein a pure water supply path communicating with each of the solid electrolyte membrane units in the axial direction is formed, and an anode chamber and a cathode chamber are formed on both surfaces of each of the electrode plates, respectively. In each of the electrode plates, an anode chamber pure water supply system from the pure water supply system to the anode chamber is formed in the inside of each of the electrode plates .
And Katachi設hydrogen gas collecting chamber which is open at the surface, the inside of the electrode plates, and Katachi設hydrogen gas pathway leading to hydrogen gas collecting chamber from the cathode chamber, is Katachi設to the each electrode plate Forming a hydrogen gas take-out path axially communicating with the hydrogen gas collecting chamber, wherein each of the electrode plates is located radially outside the anode chamber.
Forming an oxygen gas collecting chamber that is open on the surface, forming an oxygen gas passage from the anode chamber to the oxygen gas collecting chamber inside each of the electrode plates, and forming each of the electrode plates. A hydrogen / oxygen generator characterized by forming an oxygen gas take-out path communicating the oxygen gas collecting chamber in the axial direction. 2. The hydrogen / oxygen generator according to claim 1, wherein the solid electrolyte membrane is a solid polymer electrolyte membrane. 3. The hydrogen / oxygen generator according to claim 1, wherein the pure water supply line is formed near the center of each solid electrolyte membrane unit.