JP5427129B2 - Electrolytic electrode unit and electrolyzed water generating apparatus using the same - Google Patents

Description

  The present invention relates to an electrolytic electrode unit for electrolytically treating water and an electrolyzed water generating apparatus using the same.

  Electrolyzed water such as ozone water obtained by electrolyzing water has excellent actions such as sterilization and washing, and has the advantage of not generating by-products and is environmentally friendly with no persistence. There are advantages.

  As what produces | generates such electrolyzed water, there exists an electrolyzed water generating apparatus of the two-chamber separation structure which is disclosed by patent document 1, for example. This electrolyzed water generating apparatus has a structure in which a cathode chamber in which a cathode is disposed and an anode chamber in which an anode is disposed are formed and both chambers are partitioned through an ion exchange membrane.

  Patent Document 2 discloses an electrolytic electrode unit in which a cathode and an anode are integrally provided (see FIG. 8). This electrolytic electrode unit has a structure in which an ion exchange membrane 51 is spirally wound around an anode 50 which is a metal rod, and a cathode 52 made of a metal wire is further spirally wound around the ion exchange membrane 51. .

JP-A-11-269686 JP 2006-346203 A

  According to the electrolyzed water generating device disclosed in Patent Document 1, electrolyzed water can be efficiently generated, but the water channel is divided into two channels, so the entire device becomes large and the installation location is limited. There is a problem that the cost increases.

  On the other hand, if the electrolytic electrode unit disclosed in Patent Document 2 is used, it is not necessary to separate the two chambers, and only one water channel is required. Therefore, size reduction and cost reduction can be achieved. However, when assembling this electrolytic electrode unit, as described above, it is necessary to wind an ion exchange membrane and a cathode in a spiral shape around the anode. Therefore, there are problems that it takes time to assemble, and that assembly accuracy tends to vary. In addition, there is a problem in the management after assembly and the handling property at the time of transfer.

  The present invention has been invented in view of the above problems, and can be miniaturized and reduced in cost by requiring only one water channel, and can be assembled with high accuracy without trouble, and after assembly. It is an object of the present invention to provide an electrolytic electrode unit having good handling properties during management, transfer, and the like, and an electrolyzed water generating apparatus using the same.

  In order to solve the above problems, the electrolytic electrode unit of the present invention has the following configuration.

In the electrolytic electrode unit of the present invention, a conductive diamond film is formed on a plate surface facing the thickness direction of the anode side substrate, and an ion exchange sheet and a cathode side electrode plate are laminated in this order on the conductive diamond film. To do. The ion exchange sheet is provided with a sheet-side water passage hole penetrating in the thickness direction, and the cathode-side electrode plate is provided with a cathode-side water passage hole penetrating in the thickness direction, the sheet-side water passage hole and the cathode Arrange it so that the side water hole communicates. And in the place where the sheet side water passage hole and the cathode side water passage hole communicate with each other, the conductive diamond film is exposed, and on the conductive diamond film in other places, the ion exchange sheet and the The cathode side electrode plate is provided so as to be laminated.

  In the electrolytic electrode unit of the present invention, the conductive diamond film is formed on the plate surfaces on both sides of the anode side substrate, and the ion exchange sheet and the cathode side electrode are formed on the conductive diamond films on both sides. It is also preferable to laminate the plates.

  Moreover, in order to solve the said subject, the electrolyzed water generating apparatus of this invention shall comprise the following structure.

  In the electrolyzed water generating apparatus of this invention, the electrolysis electrode unit of the structure mentioned above and the support structure which arrange | positions the said electrolysis electrode unit in a water pipe are comprised.

  In the electrolyzed water generating apparatus of the present invention, it is preferable that the support structure is configured such that the plate-like electrolyzed electrode unit is arranged so that a thickness direction thereof faces a radial direction of the water pipe.

  Further, at this time, it is also preferable that the support structure is a plurality of the electrolytic electrode units arranged with a gap in the thickness direction.

  Moreover, in the electrolyzed water generating apparatus of the present invention, it is also preferable that the support structure is arranged such that the plate-like electrolyzed electrode unit is arranged such that the thickness direction thereof faces the flow direction of the water pipe.

  Moreover, in the electrolyzed water generating apparatus of this invention, it is also suitable to comprise the baffle structure for making the tap water which passes the said electrolytic electrode unit turbulent.

  The present invention is advantageous in that it can be assembled with high accuracy without trouble, and can be reduced in size and cost, and can be easily managed during assembly and handling. Play.

One Embodiment of the electrolytic electrode unit of this invention is shown, (a) is a schematic plan view, (b) is a schematic sectional side view. It is a schematic sectional side view which shows other embodiment of the electrolytic electrode unit of this invention. It is a schematic sectional side view which shows one Embodiment of the electrolyzed water generating apparatus of this invention. It is explanatory drawing which shows the installation location of the electrolyzed water generating apparatus of this invention. It is a schematic sectional side view which shows other embodiment of the electrolyzed water generating apparatus of this invention. It is a schematic sectional side view which shows other embodiment of the electrolyzed water generating apparatus of this invention. It is a schematic sectional side view which shows other embodiment of the electrolyzed water generating apparatus of this invention. It is a schematic side view which shows the electrolytic electrode unit used for the conventional electrolyzed water generating apparatus.

  The present invention will be described based on embodiments shown in the accompanying drawings. FIG. 1 shows an embodiment of the electrolytic electrode unit A of the present invention.

  In this electrolytic electrode unit A, a conductive diamond film 2, an ion exchange sheet 3, and a cathode side electrode plate 4 are arranged in this order on one plate surface facing the thickness direction of the anode side substrate 1 serving as a substrate. Laminated in layers. The anode side substrate 1, the conductive diamond film 2, the ion exchange sheet 3 and the cathode side electrode plate 4 all have a rectangular shape with a width of about 20 mm and a length of about 50 mm in plan view.

  As the anode side substrate 1, a conductive substrate formed using titanium, carbon, tungsten, niobium or silicon is used. From the viewpoint of cost and durability, it is preferable to use titanium or carbon as the material of the anode side substrate 1.

  On the flat plate surface of the thin plate-like anode-side substrate 1, a conductive diamond film 2 imparted with conductivity by boron doping is formed by plasma CVD so as to have a thickness of about 3 μm.

  The ion exchange sheet 3 is a proton conductive ion exchange film and has a thickness of about 100 to 200 μm. A plurality of sheet-side water passage holes 5 penetrating in the thickness direction are formed in the thin-film ion exchange sheet 3. Here, the sheet-side water passage holes 5 are provided in the same square hole shape, and the plurality of sheet-side water passage holes 5 are provided in a row, but may be provided in other shapes and arrangements. The film thickness of the ion exchange sheet 3 may also be another thickness of about 300 μm, for example.

  As the cathode side electrode plate 4, a metal (for example, SUS304) electrode plate having a thickness of about 1 mm is used. A plurality of cathode-side water passage holes 6 penetrating in the thickness direction are formed in the cathode-side electrode plate 4. The cathode side water passage holes 6 and the sheet side water passage holes 5 formed in the ion exchange sheet 3 have the same or similar (similar or similar) opening shapes. Further, the cathode side water passage holes 6 are arranged in the same direction at the same pitch as the arrangement of the sheet side water passage holes 5.

  The electrolytic electrode unit A in this example is assembled by placing an ion exchange sheet 3 on the conductive diamond film 2 formed on the anode side substrate 1 and placing a stainless steel cathode side electrode plate 4 on the ion exchange sheet 3. In addition, the cathode side electrode plate 4 is fixed to the anode side substrate 1.

  At this time, the ion exchange sheet 3 and the cathode side electrode plate 4 are aligned so that the water passage holes 5 and 6 communicate with each other in the thickness direction on a one-to-one basis. As a result, the conductive diamond film 2 is exposed at locations where the water holes 5 and 6 communicate with each other, and the ion exchange sheet 3 and the cathode-side electrode plate 4 are formed on the conductive diamond membrane 2 at other locations. Laminated.

  The alignment may be performed while visually checking the position where the slit-shaped water holes 5, 6 overlap each other with the cathode-side electrode plate 4 covered on the ion exchange sheet 3. Can be done easily. The cathode side electrode plate 4 is fixed by fixing the cathode side electrode plate 4 and the anode side substrate 1 with screws, but may be fixed by other methods.

  In this electrolytic electrode unit A, the anode side of the power supply unit 8 is connected to the anode-side substrate 1 and the cathode side of the power supply unit 8 is connected to the cathode-side electrode plate 4 as shown in the figure. That is, electrolytic treatment is performed in the water simply by immersing the electrolytic electrode unit A in water and applying a voltage from the power supply unit 8. The electrolytic treatment at this time will be described again in the electrolyzed water generator B described later.

  The electrolytic electrode unit A of the present example is formed in a thin plate shape as a whole, so that downsizing and cost reduction are realized, and handling properties at the time of management and transfer are also good. Moreover, the electrolytic electrode unit A can be assembled by the simple operation as described above, and can be easily assembled with high accuracy.

  FIG. 2 shows another embodiment of the electrolytic electrode unit A. In this electrolytic electrode unit A, the conductive diamond film 2, the ion exchange sheet 3, and the cathode side electrode plate 4 are laminated on the front and back plate surfaces that peel in the thickness direction of the anode side substrate 1. Other basic configurations are the same as those of the embodiment shown in FIG.

  That is, in the electrolytic electrode unit A of another example, the conductive diamond film 2 is formed by plasma CVD on the flat plate surfaces on both sides of the anode substrate 1 serving as the substrate. Then, the ion exchange sheet 3 and the cathode side electrode plate 4 are placed on one conductive diamond film 2 for alignment, and the cathode side electrode plate 4 is fixed to the anode side substrate 1 with the ion exchange sheet 3 interposed therebetween. To do. On the other conductive diamond film 2, the ion exchange sheet 3 and the cathode side electrode plate 4 are laminated in the same procedure. At this time, alignment is performed so that the water flow holes 5 and 6 of the ion exchange sheet 3 and the cathode side electrode plate 4 communicate with each other on both the front and back sides.

  In this electrolytic electrode unit A, as shown in the figure, the anode side of the power supply unit 8 is connected to the anode side substrate 1 and the cathode side is connected to the cathode side electrode plates 4 on both the front and back sides.

  The embodiment of the electrolytic electrode unit A has been described above. Below, embodiment of the electrolyzed water generating apparatus B using this electrolytic electrode unit A is described.

  In FIG. 3, one Embodiment of the electrolyzed water generating apparatus B is shown. In addition to the electrolytic electrode unit A shown in FIG. 1, the electrolytic water generating device B includes a support structure 10 for arranging the electrolytic electrode unit A in a water pipe. The support structure 10 includes a cylindrical pipe housing 11 that forms part of a water pipe. The pipe housing 11 is a non-conductive member formed using a resin such as acrylic, and has a structure in which the electrolytic electrode unit A is fixed to the inner peripheral surface thereof.

  The electrolytic electrode unit A is fixed to the duct housing 11 so that the side of the anode side substrate 1 on which the conductive diamond film 2 is formed is exposed to the flow path side. The anode side substrate 1 may be fixed to the duct housing 11 with a fixing tool such as a screw or an adhesive, or may be insert-molded in a state where a part thereof is embedded.

  In the electrolytic electrode unit A fixed to the duct housing 11, the sheet side water passage holes 5 and the corresponding cathode side water passage holes 6 form a series of water passage holes 12, and each water passage hole 12 is electrically conductive. The conductive diamond film 2 is exposed to the flow path side. That is, tap water is sequentially supplied to a part of the surface of the conductive diamond film 2 through each water passage 12.

  A baffle structure 13 for turbulent tap water flowing in the pipe housing 11 is provided at a location facing the electrolytic electrode unit A on the inner peripheral surface of the pipe housing 11. The baffle structure 13 is a structure in which a plurality of baffle plates 14 are projected from the inner peripheral surface of the pipe housing 11, but may be other structures as long as tap water can be turbulent. Also, the arrangement location of the baffle structure 13 may be another location such as a location upstream of the electrolytic electrode unit A.

  A power supply unit 8 composed of a constant current DC power supply is disposed outside the pipe housing 11. The power supply unit 8 may be assembled integrally with the pipe housing 11 or may be provided separately from the pipe housing 11.

  The electrolyzed water generating apparatus B having the above-described configuration can be installed, for example, on the wash basin 20 shown in FIG. Specifically, the pipe housing 11 is interposed in the middle of a water pipe that sends tap water to the faucet 21 of the wash basin 20. The pipe housing 11 (that is, the electrolyzed water generator B) is installed in the vicinity of the upstream side of the discharge port of the faucet 21, and electrolyzes tap water immediately before being discharged from the faucet 21 as described below.

The tap water introduced into the pipe housing 11 from the upstream side flows downstream along the surface of the electrolytic electrode unit A (see the arrow in FIG. 3). Here, a voltage of about 10 V is applied between the anode side substrate 1 and the cathode side electrode plate 4 by the power supply unit 8. Then, in the conductive diamond film 2 of the anode side substrate 1, ozone (O ₃ ) is generated by the following electrochemical reaction on the anode side. In the cathode side electrode plate 4, hydrogen (H ₂ ) is generated by the following electrochemical reaction on the cathode side. The ion exchange sheet 3 sandwiched between the conductive diamond film 2 and the cathode side electrode plate 4 guides hydrogen ions generated on the anode side to the cathode side, and the ion exchange sheet 3 is interposed therebetween. The electrochemical reaction on the anode side and the cathode side proceeds promptly.
Anode; 3H ₂ O → O ₃ + 6H ⁺ + 6e ⁻
Cathode; 2H ⁺ + 2e ⁻ → H ₂
Ozone generated on the surface of the conductive diamond film 2 is substantially melted in the molecular order in the tap water through the water passage hole 12. Although some of the molten ozone may react with hydrogen on the cathode side, the electrolytic electrode unit A is installed in the vicinity of the upstream side of the discharge port such as the faucet 21, so that it is sufficient when taken out from the discharge port. It can be used as ozone water containing a quantity of ozone.

  5 to 7 schematically show other embodiments of the electrolyzed water generator B. In the electrolyzed water generating apparatus B of the embodiment shown in FIG. 5, the pipe housing 11 forming the support structure 10 integrally has a support plate 15 for supporting the electrolytic electrode unit A at the center of the water flow. The electrolytic electrode unit A fixed on the resin support plate 15 is disposed so that the thickness direction thereof faces the radial direction of the pipe housing 11 (water pipe), and tap water flowing down in the pipe housing 11 is supplied. Based on this, ionic water is sequentially generated. In the figure, the power supply unit 8 and wiring are omitted.

  In this electrolyzed water generating apparatus B, the electrolysis electrode unit A of the embodiment shown in FIG. 1 is used. However, the electrolysis electrode unit A of the embodiment shown in FIG. It is good also as a structure which supports the electrode unit A in a water flow.

  In the electrolyzed water generating apparatus B of the embodiment shown in FIG. 6, there are two support plates 15 similar to those of the embodiment of FIG. 5, and the electrolytic electrode unit A is fixed to each support plate 15. Thereby, two electrolytic electrode units A are arranged side by side with a gap in the thickness direction. Note that three or more electrolytic electrode units A may be arranged in parallel with the same structure.

  In the electrolyzed water generating apparatus B of the embodiment shown in FIG. 7, the thickness direction of the electrolytic electrode unit A is the flow direction of the pipe housing 11 (water pipe) by the support plate 15 provided integrally with the pipe housing 11. It is arranged to face. Here, the electrolytic electrode unit A of the embodiment shown in FIG. 1 is arranged such that the side on which the conductive diamond film 2 is formed faces the upstream side. In addition, the electrolytic electrode unit A of the embodiment shown in FIG. 2 may be arranged. In that case, one conductive diamond film 2 faces the upstream side, and the opposite conductive diamond film 2 faces the downstream side. Arranged to face.

  Heretofore, various embodiments of the electrolytic electrode unit A and the electrolyzed water generating apparatus B using the same have been described.

  In the electrolytic electrode unit A of each embodiment, the conductive diamond film 2 is formed on the plate surface facing the thickness direction of the anode side substrate 1, and the ion exchange sheet 3 and the cathode side electrode are formed on the conductive diamond film 2. The plate 4 is laminated in this order. The ion exchange sheet 3 is provided with sheet-side water passage holes 5 penetrating in the thickness direction, and the cathode-side electrode plate 4 is provided with cathode-side water passage holes 6 penetrating in the thickness direction. 5 and the cathode side water passage hole 6 are arranged so as to communicate with each other.

  According to this electrolytic electrode unit A, it is not necessary to separately form the cathode chamber and the anode chamber, and it is possible to reduce the size and cost. In addition, the electrolytic electrode unit A can be assembled without much effort, and variations in assembly accuracy are unlikely to occur. In addition, since the entire unit is formed in a plate shape, it is easy to handle after assembling and transporting.

  Further, in the electrolytic electrode unit A of the embodiment shown in FIG. 2, the conductive diamond film 2 is formed on both the front and back plate surfaces of the anode side substrate 1, and the ion exchange sheet is formed on the both sides of the conductive diamond film 2. 3 and the cathode side electrode plate 4 are laminated.

  Thereby, ozone can be produced | generated by the front and back both sides of the electrolytic electrode unit A which makes plate shape. Therefore, ozone water generation with higher efficiency is realized, which contributes to further miniaturization of the electrolytic electrode unit A.

  And in the electrolyzed water generating apparatus B of each embodiment, the above-mentioned electrolysis electrode unit A and the support structure 10 which arrange | positions this electrolysis electrode unit A in a water pipe are comprised.

  According to this electrolyzed water generating apparatus B, it is not necessary to separately form the two chambers of the cathode chamber and the anode chamber, and only one channel is required, so that the size and cost can be reduced. In addition, the electrolytic electrode unit A is easy to assemble and the accuracy is less likely to vary. Therefore, it is possible to generate a sufficient amount of ozone while being small in size and low in cost, and the possibility of application is particularly high in the consumer field.

  Furthermore, in the electrolyzed water generating apparatus B of the embodiment shown in FIGS. 3 to 6, the support structure 10 arranges the plate-shaped electrolyzed electrode unit A so that the thickness direction thereof faces the radial direction of the water pipe. .

  Thereby, ozone water can be produced | generated by electrolysis in this flow, ensuring the ease of the flow of the tap water in a water pipe.

  In particular, in the electrolyzed water generating apparatus B of the embodiment shown in FIG. 6, the support structure 10 has a plurality of electrolytic electrode units A arranged with a gap in the thickness direction.

  This makes it easy to generate a large amount of ozone by electrolysis while ensuring the ease of running of tap water in the water pipe.

  Moreover, in the electrolyzed water generating apparatus B of embodiment shown in FIG. 7, the support structure 10 has arrange | positioned the electrolytic electrode unit A which makes plate shape so that the thickness direction may face the flow direction of a water pipe.

  Thereby, the tap water sequentially supplied from the upstream side in the water pipe efficiently comes into contact with the plate surface of the electrolytic electrode unit A. Therefore, more tap water is used for electrolysis in the electrolytic electrode unit A.

  Moreover, in the electrolyzed water production | generation apparatus B of embodiment shown in FIG. 3, the baffle structure 13 for turbulently flowing the tap water which passes the electrolysis electrode unit A is comprised.

  Thereby, the tap water sequentially supplied from the upstream side is more efficiently used for electrolysis in the electrolytic electrode unit A. In addition, the same baffle structure 13 is employable also in the electrolyzed water generating apparatus B of other embodiment.

  As mentioned above, although this invention was demonstrated based on embodiment shown to an accompanying drawing, this invention is not limited to embodiment of each said example, If it is in the range which this invention intends, in each example suitably It is possible to change the design of the above and to apply a combination of the configurations of the examples as appropriate.

DESCRIPTION OF SYMBOLS 1 Anode side board | substrate 2 Conductive diamond film 3 Ion exchange sheet 4 Cathode side electrode board 5 Sheet side water passage hole 6 Cathode side water passage hole 10 Support structure 13 Baffle structure A Electrolytic electrode unit B Electrolyzed water production | generation apparatus

Claims (7)

A conductive diamond film is formed on a plate surface facing the thickness direction of the anode side substrate, and an ion exchange sheet and a cathode side electrode plate are laminated in this order on the conductive diamond film. The sheet-side water passage hole penetrating in the thickness direction is provided, and the cathode-side electrode plate is provided with the cathode-side water passage hole penetrating in the thickness direction, and the sheet-side water passage hole and the cathode-side water passage hole are provided. The conductive diamond film is exposed at the place where the sheet side water hole and the cathode side water hole communicate with each other, and the conductive diamond film is exposed on the other part of the conductive diamond film. An electrolytic electrode unit , wherein an ion exchange sheet and the cathode electrode plate are provided so as to be laminated .   The conductive diamond film is formed on the plate surfaces on both sides of the anode side substrate, and the ion exchange sheet and the cathode side electrode plate are laminated on the conductive diamond film on both sides, respectively. The electrolytic electrode unit according to claim 1.   An electrolyzed water generating apparatus comprising: the electrolyzed electrode unit according to claim 1; and a support structure for arranging the electrolyzed electrode unit in a water pipe.   The electrolyzed water generating apparatus according to claim 3, wherein the supporting structure is configured such that the electrolytic electrode unit having a plate shape is arranged such that a thickness direction thereof faces a radial direction of the water pipe.   The electrolyzed water generating apparatus according to claim 4, wherein the support structure includes a plurality of the electrolyzed electrode units arranged with a gap in the thickness direction.   The electrolyzed water generating apparatus according to claim 3, wherein the support structure is configured such that the electrolytic electrode unit having a plate shape is arranged such that a thickness direction thereof faces a flow direction of the water pipe. The electrolyzed water generating apparatus according to any one of claims 3 to 6, further comprising a baffle structure for turbulently flowing tap water passing through the electrolyzed electrode unit.

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