JP2008240030A - Hydrogen-oxygen gaseous mixture generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydrogen-oxygen gaseous mixture generator equipped with an electrode structure for properly changing the opposed effective surface area of an anode plate-a cathode plate and the interval between the electrode plates according to various condition including electrolysis condition to carry out electrolysis. <P>SOLUTION: The hydrogen-oxygen gaseous mixture generator is for generating a hydrogen-oxygen gaseous mixture by arranging the anode plate 1 and the cathode plate 2 to be opposed in an electrolytic cell to thereby electrolyze an electrolyte, wherein the required pieces of the anode plates 1 and the cathode plates 2 are alternately arranged and the electrode effective surface area and the interval between the electrodes are made controllable to be increased or decreased by inserting a cylindrical insulating spacers 6 respectively between the electrode plates and connecting and fixing the electrode plates with insulating penetrating bolts 7. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a hydrogen / oxygen mixed gas generator for generating a hydrogen / oxygen mixed gas, which can flexibly respond to performance requirements considering various conditions, and further has a highly efficient and simple electrode structure. The present invention relates to a hydrogen / oxygen mixed gas generator.

For electrodes in conventional hydrogen / oxygen hybrid gas generators, increasing the number of electrode plates in order to ensure an effective electrolysis area increases the distance between the electrodes, and it is necessary to increase the required decomposition voltage. It has been difficult to simply improve the electrolysis efficiency.

The conventional hydrogen / oxygen hybrid gas generator has a complicated structure, and it has been difficult to flexibly meet performance requirements. For example, Patent Document 1 discloses that an upper electrode in which a plurality of cylindrical electrode plates are arranged concentrically at intervals, and a lower electrode that is arranged in a concentric manner with a gap from the upper electrode, each electrode having a predetermined interval. A hydrogen / oxygen mixed gas generating device is disclosed that uses an electrolytic cell that is inserted so as to face each other and maintained in a cylindrical casing.

Cylindrical electrodes in such a configuration are attached to the upper and lower electrode support materials so as to be an anode-cathode-anode-cathode, respectively, by combining electrode elements in which a part of cylinders having different diameters are sequentially cut. These electrode elements are inserted so as to face each other at a predetermined interval, and an electrode assembly having a cylindrical outer shape is used, and power is supplied by using each electrode support member as a connection terminal for both positive and negative electrodes. In such a structure, it is difficult to maintain an efficient electrolytic reaction because it is difficult to increase or decrease the facing area of the electrode plates and to maintain the distance between the electrodes at a predetermined value.

Patent Document 2 uses an entangled body of metal fibers and a minus side sub-metal plate as a minus side electrode, and an electrode plate as a plus side electrode. Each of these electrodes is a plurality of minus sides around the plus side electrode plate The electrode plates are held inside and outside at appropriate intervals. Furthermore, it is disclosed that the hydrogen / oxygen gas bubbles adhering to the surfaces of these electrodes are peeled off using ultrasonic waves to improve electrolysis efficiency in the oxygen / hydrogen gas generator. The electrode structure in such a configuration is complicated and requires an accessory device for removing bubbles of each gas that adheres to the electrode and inhibits the reaction.
JP-A-2005-248244 JP 2005-054215 A

An object of the present invention is to provide a hydrogen / oxygen having an electrode structure in which the effective facing area of the anode plate-cathode plate and the electrode plate interval which are opposed to each other according to various conditions for performing electrolysis can be appropriately changed according to the electrolysis conditions. It is to provide a hybrid gas generator.

According to the first aspect of the present invention, in a hydrogen / oxygen mixed gas generator for electrolyzing an electrolytic solution, a flat anode plate and a cathode plate are arranged opposite to each other in an electrolytic cell. .. and cathode plates 2... Are arranged alternately opposite to each other, and the electrode effective area can be increased or decreased by interposing and fixing the tubular insulating spacers 6 between the electrode plates with insulating through bolts 7. This is a hydrogen / oxygen mixed gas generator.

The invention according to claim 2 is a hydrogen / oxygen mixed gas generator in which the anode plate 1, the cathode plate 2, and the insulating spacer 6 are formed in the same shape, respectively. To do.

In the invention according to claim 3, the number of connections of the anode plate 1 ..., the cathode plate 2 ... and the insulating spacer 6 can be changed according to the scale of the electrolytic cell, working atmosphere, operating conditions, and the like. It is a certain hydrogen / oxygen mixed gas generator.

In the invention according to claim 4, a plurality of sets of the cylindrical insulating spacers 6 having different axial dimensions are prepared, and the length is an optimum configuration according to the scale of the electrolytic cell, the working atmosphere, the operating conditions, and the like. The cylindrical insulating spacers are connected at fixed intervals between the different-polarity electrode plates and insulated by the insulating through bolts 7, and the same polarity electrode plates are connected and fixed through the conductive spacer 5. 8 is a hydrogen / oxygen hybrid gas generator connected and fixed by a power source terminal 8.

The invention according to claim 5 is a hydrogen / oxygen mixed gas generator that selects and applies a voltage capable of achieving an appropriate current density suitable for the electrode material of each of the anode plate and the cathode plate. To do.

According to the hydrogen / oxygen mixed gas generator according to the present invention, the flat anode plate and the cathode plate are connected and fixed by the insulating through bolts while interposing the cylindrical insulating spacers alternately. As a result, the area of each electrode plate increases in proportion to the number, such as 2 times, 3 times, 4 times,. Therefore, considering the equipment scale, electrolytic cell dimensions, characteristics and capacity of the power supply device, desired gas generation amount, etc., the optimum electrode area should be determined, and the corresponding number of electrodes should be selected and connected. The purpose of can be achieved.

According to the present invention, the flat anode plate, the cathode plate, and the insulating spacer are respectively formed in the same shape. Therefore, the required number of anode plates and cathode plates to be connected according to the situation at the site is selected, and the electrolysis efficiency is maximized and / or the hydrogen / oxygen mixed gas yield is maximized by the field matching. be able to.

In the present invention, since a plurality of sets of the cylindrical insulating spacers having different axial dimensions are prepared, the optimum electrode plate interval is selected according to the equipment in the field, mainly the scale of the electrolytic cell, the working atmosphere, the operating conditions, etc. In order to achieve the above, by selecting the optimal length from the cylindrical insulating spacers, the electrode plates are equally spaced, and the insulating through bolts so that the electrodes of different polarity are insulated. Connected and fixed.

Therefore, by selecting the number of electrodes and selecting the length of the cylindrical insulating spacer and combining them, the electrode facing area and the electrode plate spacing can be changed arbitrarily, so that the electrolysis conditions can be adjusted over a very wide range. Thus, a hydrogen / oxygen hybrid gas generator capable of high-efficiency operation can be provided. The electrode plates of the same polarity can be conductively connected and fixed by conductive through bolts via a conductive spacer having a width obtained by adding the electrode plate thickness to about twice the length of the insulating spacer.

Next, a hydrogen / oxygen hybrid gas generator according to the present invention will be disclosed with reference to the accompanying drawings. FIG. 1 is a perspective view showing the structure of an electrode assembly in which three flat anode plates 1 and two cathode plates 2 used in the present invention are combined. As is apparent from the figure, the anode plate 1 is provided with a convex side 1t for terminal connection at one corner portion (upper left end portion in this embodiment) of the square electrode plate. The shaded cathode plate 2 has a convex side 2t for terminal connection at the upper right end. Both electrode plates 1 and 2 have the same shape and are front and back. However, in terms of material, the current direction during electrolysis is opposite, and in addition, the optimum metal component in consideration of the components of the electrolyte Should be selected so that

In FIG. 1, a positive electrode terminal 3 and a negative electrode terminal 4 are electrically connected to a convex side 1 t of the anode plate 1 and a convex side 2 t of the cathode plate 2 by a conductive through bolt 8 via a conductive spacer 5, respectively. Yes. The second and third anode plates 1 and the cathode plate 2 on the right back side of the drawing are also conductively connected by the second conductive spacer 5 on the upper right back side, respectively. When the number of electrodes further increases, the conductive spacers 5 may be increased and fastened with long conductive through bolts 8.

An insulating spacer 6 is interposed between the anode plate 1 and the cathode plate 2 and fastened by insulating through bolts 7. In this way, the anode plate 1 and the cathode plate 2 are maintained in an insulated state at a predetermined interval by the insulating spacer 6 and the insulating through bolt 7. When the number of electrodes further increases, the insulating spacers 6 may be interposed, and the long insulating through bolts 7 may be used for fastening.

The electrode assembly configured as described above has an appropriate volume and is housed in an electrolytic cell made of an organic material or an inorganic material having sufficient resistance to the electrolytic solution to be used and the generated gas. The target substance, in this embodiment, a hydrogen / oxygen mixed gas can be obtained by applying a predetermined DC voltage to each electrode after filling. .

FIG. 2 is a side sectional view (A) and a front sectional view (B) in which an electrode assembly is housed in an appropriate electrolytic cell 10 and filled with a predetermined electrolytic solution 9. Here, it is not clearly shown how the electrode assembly is fixed to the electrolytic cell 10. However, as long as the electrode assembly is small and light as is commonly used by the same type of apparatus, it may be hung on the lid of the electrolytic cell 10 with increased strength. In the case of a large electrode assembly, a mounting bracket or a base may be disposed inside the electrolytic cell 10 and placed and fixed thereto.

The hydrogen / oxygen hybrid gas generator according to the present invention can arbitrarily increase the facing area of the electrode plates by alternately arranging a plurality of flat anode plates and cathode plates facing each other. If the facing area of the electrode is increased, the electrolytic reaction rate can be increased to increase the yield of the product hydrogen / oxygen mixed gas.

In addition, when alternately arranging a plurality of anode plates and cathode plates facing each other, by connecting an interval between both electrode plates with an insulating spacer of an arbitrary length, components of the electrolytic solution, reaction temperature, ambient temperature, Optimum electrolysis efficiency can be achieved in consideration of the scale of the apparatus and the characteristics of the power source.

Such an adjustment of the electrode interval can be easily confirmed and adjusted while changing the length of the insulating spacer in addition to the simple structure of the both electrodes being almost completely flat. If the electrolytic reaction with high efficiency proceeds, the amount of power used can be reduced, and the energy saving effect becomes remarkable, which can contribute to cost reduction.

It is a perspective view which shows the structural example of the anode plate and cathode plate assembly in the hydrogen-oxygen mixed gas generator which concerns on this invention. It is the sectional side view (A) and front sectional view (B) which show the state which accommodated the anode plate and cathode plate assembly in the hydrogen / oxygen mixed gas generator which concerns on this invention in the electrolytic cell.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Anode plate 1t Convex side for terminal connection 2 Cathode plate 2t Convex side for terminal connection 3 Positive electrode terminal (anode terminal)
4 Negative terminal (cathode terminal)
5 Conductive Spacer 6 Insulating Spacer 7 Insulating Through Bolt / Nut 8 Conductive Through Bolt / Nut 9 Electrolyte 10 Electrolyzer

Claims (5)

In the electrolytic cell, flat anode plates and cathode plates are arranged opposite to each other, and in the hydrogen / oxygen mixed gas generator for electrolyzing the electrolytic solution, the required number of anode plates and cathode plates are alternately arranged opposite to each other. A hydrogen / oxygen hybrid gas generator, characterized in that an electrode effective area can be increased or decreased by interposing a cylindrical insulating spacer on an electrode plate and connecting and fixing with an insulating through bolt. The hydrogen / oxygen mixed gas generator according to claim 1, wherein the anode plate, the cathode plate, and the insulating spacer are formed in the same shape. The number of connections of the anode plate, the cathode plate, and the insulating spacer can be changed according to the scale of the electrolytic cell, working atmosphere, operating conditions, and the like. Hydrogen / oxygen hybrid gas generator. A plurality of sets of cylindrical insulating spacers having different axial dimensions are prepared, and differ depending on the length of the cylindrical insulating spacer having an optimum configuration according to the scale of the electrolytic cell, working atmosphere, operating conditions, etc. The electrode plates are equidistantly connected and fixed in an insulated state by insulating through bolts, and the same polarity electrode plates are connected and fixed by conductive through bolts via a conductive spacer and connected to the power supply terminals. The hydrogen / oxygen hybrid gas generator according to any one of claims 1 to 3, wherein 5. The hydrogen / oxygen mixed gas according to claim 1, wherein a voltage capable of achieving an appropriate current density suitable for an electrode material of each of the anode plate and the cathode plate is selected and applied. Generator.

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