JP3805696B2 - Electrolyzed water generator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the generation of electrolyzed water having a cleaning effect and a sterilizing effect.
[0002]
[Prior art]
In recent years, electrolytic water has attracted attention as washing water.
For example, in the generation apparatus disclosed in Japanese Patent Laid-Open No. 2000-317414, a negative electrode plate having a large number of holes and a positive electrode plate without holes are opposed to each other, and water flows along both electrode plates. Thereby, electrolyzed water having a cleaning effect is generated.
[0003]
In the apparatus of JP-A-6-277385, a long labyrinth-shaped flow path is formed between a positive electrode and a negative electrode, and water is allowed to flow along the flow path. Thereby, while producing electrolyzed water, ozone is generated and electrolyzed water with a bactericidal effect is produced.
[0004]
[Problems to be solved by the invention]
However, in these prior arts, since ozone is accidentally generated, it is difficult to increase the concentration of ozone.
Accordingly, a main object of the present invention is to provide an apparatus that generates electrolyzed water having a cleaning effect and a high ozone concentration.
[0005]
In the apparatus disclosed in Japanese Patent Laid-Open No. 62-227494, three plate electrodes having a large number of through holes are arranged along a horizontal plane in a state where they are separated from each other in the vertical direction, and a liquid flows from the bottom to the top. In this apparatus, since bubbles are accumulated on the lower surface of the plate-like electrode, not only the efficiency is low, but also small bubbles of oxygen hardly rise upward, so that almost no ozone is generated.
[0006]
In the apparatus disclosed in Japanese Patent Laid-Open No. 56-786769, a spacer is interposed between an anode and a cathode made of a metal mesh, and a liquid is pumped in a lateral direction perpendicular to the metal mesh. In this apparatus, since the liquid flows in a direction perpendicular to the metal net, it is necessary to provide a large number of metal nets in order to increase the ozone concentration in the liquid. This not only increases the size of the apparatus, but also complicates the structure for fixing the metal net, which increases costs.
Accordingly, another object of the present invention is to reduce the size and cost of the electrolyzed water generator.
[0007]
Incidentally, Japanese Patent Application Laid-Open No. 11-216483 discloses a washing machine provided with an electrolyzed water generating unit. This washing machine periodically reverses the polarity of the two electrodes to prevent unidirectional wear of the electrodes. However, no disclosure is made regarding the time for reversing the polarity, and the ozone generation efficiency cannot be increased by switching the polarity.
[0008]
[Means for Solving the Problems]
  To achieve the above purpose,Main departureLightSome aspects of1 will be described with reference to FIG.
  BookAspectIs an electrolyzed water generating device that generates electrolyzed water from a liquid, and includes an electrolytic cell 1, an introduction unit 21, electrode pairs 11 and 12, a DC power source and a lead-out unit 22. The introduction part 21 pumps the liquid to the electrolytic cell 1. The electrode pair 11, 12 includes at least two plate electrodes 11, 12. The plate-like electrodes 11 and 12 are disposed in the electrolytic cell 1 so as to face each other along a substantially vertical plane and close to each other. The DC power source applies a DC voltage between the plate electrodes 11 and 12. The deriving unit 22 derives electrolyzed water generated by electrolyzing the liquid in the electrolytic cell 1 from the electrolytic cell 1. BookAspectFurther comprises a control circuitIn this case,The control circuit switches the direction of the current flowing between the plate electrodes 11 and 12 by switching the potential difference generated between the electrode pairs 11 and 12 at intervals of 0.5 seconds to 180 seconds. Each of the electrodes 11 and 12 is formed with a large number of through holes 61 and 62. The introduction part 21 is provided in the lower part of the electrolytic cell 1. The lead-out part 22 is provided in the upper part of the electrolytic cell 1. In the electrolytic cell 1Regulatory plate (Regulatory measures)40 is provided. In the restricting means 40, the liquid flow F from the introduction part 21 into the electrolytic cell 1 and led out from the lead-out part 22 passes through the through holes 61 and 62 of the plurality of plate-like electrodes 11 and 12. Through the electrode pair 11, 12Next toWhile cutting, the flow direction F of the liquid is regulated so as to rise.
[0009]
In the present invention, the “plate electrode” means that a metal net is included in addition to an electrode plate in which a large number of through holes are formed in a plate-like conductor such as a metal plate.
[0010]
Water molecules are said to behave like macromolecules by forming clusters (an aggregate of molecules formed by aggregation of multiple molecules) by hydrogen bonding. However, when water is electrolyzed, water molecules generate oxygen gas, hydrogen gas, and new water molecules by the chemical reactions shown in the following equations (1), (2), and (3).
[0011]
H₂O → H⁺+ OH^-                  … (1)
2H⁺+ 2e^-→ H₂                  … (2)
4OH^-→ 4e^-+ O₂+ 2H₂O ... (3)
[0012]
By performing such a chemical change, the cluster is destroyed. Thereby, the surface tension of water is reduced, the surface-active effect is increased, and the permeability to the dirt substance is increased. Furthermore, since the generated electrolyzed water contains abundant fine bubbles such as hydrogen gas and oxygen gas, cavitation (the generated bubbles become nuclei and innumerable microcavities close to vacuum are generated. The action of generating an impact force when this collapses) makes it easy to peel off the adhered substance that causes the dirt from the object to be cleaned.
It has been confirmed that the surface tension of tap water can be reduced from 0.0722 N / m to about 0.0716 N / m by electrolysis.
[0013]
In the present invention, water or an aqueous solution is used as raw water (liquid). Here, in order to obtain the chemical reactions of the above formulas (1) to (3), the raw water needs to have conductivity, and therefore, the raw water itself needs to contain ions. Distilled water) or ion-exchanged water can be used, but generally tap water or well water can be used. Further, an aqueous solution to which sodium chloride or citric acid is added can also be adopted as the aqueous solution.
[0014]
  The amount of water electrolysis is proportional to the value of the current flowing through the electrode pairs 11 and 12. Therefore, in order to perform strong electrolysis, it is necessary to increase the current value as much as possible. Therefore, in the present invention, the gap Δ between the electrodes 11 and 12 is reduced in order to increase the current without increasing the applied voltage so much. The distance Δ between the electrodes 11 and 12 is0.5mm ~ 3.0mm Set toMore preferably, it is about 0.5 mm to 2 mm. From this viewpoint, it is preferable to increase the area of the electrode by providing a plurality of electrode units (electrode pairs 11, 12 or electrode group).
[0015]
The first electrode plate 11 and the second electrode plate 12 are arranged substantially parallel to each other and facing each other, whereby the distance Δ between the electrodes 11 and 12 becomes substantially constant, and the electrode plates 11 and 12 The surface contributes equally to electrolysis.
The “face-to-face” means that no diaphragm is provided between the two electrode plates 11 and 12.
[0016]
  On the other hand, by reducing the gap Δ between the electrodes 11 and 12, the raw water is difficult to flow into the gap Δ. So bookAspectThen, a large number of through holes 61 and 62 are provided in each of the plurality of electrode plates 11 and 12 so that water easily flows into the flow path 6 between the electrodes 11 and 12.
[0017]
When water enters the flow path 6 between the two electrode plates 11 and 12, the water flows in the flow path 6 together with bubbles and flows out from the other through holes 61 and 62. Therefore, the two electrode plates 11 and 12 are not arranged horizontally but arranged along the vertical plane so that the water containing bubbles can easily flow.
[0018]
When water is electrolyzed, fine bubbles of hydrogen gas and oxygen gas are generated. The fine bubbles generated in this manner serve as nuclei, generating innumerable microcavities close to vacuum, and an impact force is generated when the microcavities collapse. This phenomenon is called cavitation, and the energy when the bubbles collapse is effectively used as a cleaning action.
In addition, it is preferable that the ozone concentration in water required for disinfection is 1 mg / L or more.
[0019]
Further, when water is electrolyzed by the plurality of electrode plates 11 and 12 facing each other and the direction of the current flowing between the electrodes 11 and 12 is reversed, ozone gas is likely to be generated due to the following phenomenon. Guessed.
[0020]
For example, when the potential of the first electrode plate 11 is higher than the potential of the second electrode plate 12, the electrode plate 11 having a high potential is subjected to the chemical reaction shown in the following equations (4) and (5). OH radicals are generated on the surface of 11 to generate oxygen atoms O, and these oxygen atoms are bonded together to form oxygen molecules 0₂Is generated.
OH + OH → O + H₂O ... (4)
O + O → O₂                …(Five)
[0021]
In other words, oxygen molecules (oxygen gas) are generated as shown in the chemical reaction formula (3). Oxygen molecules O generated on the surface of the electrode plate 11 having a high potential.₂Is directed to the through hole 62 of the other electrode plate 12 having a low potential in order to exit from the narrow flow path 6 between the electrodes 11 and 12 together with the flowing water, so that oxygen is present in the vicinity of the through hole 62 of the electrode plate 12 having the low potential. Molecule O₂The concentration of becomes higher.
[0022]
In such a state, when the potentials of the electrode plates 11 and 12 are reversed (alternate), OH radicals are generated on the second electrode plate 12 having a higher potential than the first electrode plate 11 and oxygen atoms O are generated. Generated. The electrode plate 12 with the increased potential is subjected to oxygen molecules O in accordance with the chemical reaction equation (5).₂As described above, oxygen molecules O are already present in the vicinity of the through-hole 62.₂Since oxygen is gathered, oxygen molecules O₂The concentration of becomes higher. Therefore, as shown in the following formula (6), the oxygen atom O is directly converted into an oxygen molecule O₂Ozone O_ThreeIt is estimated that the probability of occurrence will increase.
O + O₂→ O_Three              … (6)
That is, by switching the polarities of the electrode plates 11 and 12 facing each other at an appropriate time interval ΔT and alternating them, the ozone O_ThreeIt is thought that the concentration of can be increased.
[0023]
In general tap water, chloride ion Cl at a concentration of about 10 to 20 mg / liter^-It is included. When such tap water is electrolyzed, chlorine ions Cl are obtained by the chemical reaction shown in the following equation (11).^-Emits electrons to the electrode plate, and chlorine gas Cl in water₂Is generated.
2Cl^-→ 2e^-+ Cl₂            … (11)
Chlorine gas generated in water reacts easily with hydroxyl ions in water by a chemical reaction shown in the following formula (12), and newly generates chlorine ions and residual chlorine ClO.^-And water H₂O is generated.
Cl₂+ 2OH^-→ Cl^-+ ClO^-+ H₂O ... (12)
Residual chlorine ClO generated here^-Is a substance that is not very strong as an oxidant, but has a bleaching action and a bactericidal action.
Although ozone has a strong sterilizing power immediately after generation, it is said that the lifetime in water is several seconds to several tens of minutes. On the other hand, although residual chlorine has a weak sterilizing power, it can maintain a sterilizing effect for a long time.
[0024]
By electrolyzing tap water having chlorine ions with the above-described apparatus, ozone and residual chlorine as described above can be generated simultaneously. As a result, the generated electrolyzed water exhibits a strong sterilizing power by ozone immediately after electrolyzing tap water, and maintains a corresponding sterilizing power by residual chlorine after a long time.
When the bactericidal effect on various bacteria was measured, the bactericidal effect did not deteriorate even with water stored for 24 hours as well as water immediately after electrolysis.
[0025]
  By the way, bookAspectIn this case, the potential difference between the electrode pairs 11 and 12 is switched to alternate the potential difference.May. However, if the liquid rises while passing through the electrode pairs 11 and 12 a plurality of times through the through holes 61 and 62 of the electrode pairs 11 and 12, the liquid passes through the through holes 61 and 62 of the electrodes 11 and 12. Is passed many times, so that an effect similar to that described above can be obtained without switching the potential difference, and the effect of increasing the concentrations of ozone and residual chlorine can be obtained.
[0026]
  BookAspectIn this case, switching the potential difference between the electrode pairs 11 and 12 does not only mean switching the potentials of the first and second electrode plates 11 and 12 from + V and −V to −V and + V. , 12 may be switched between the relative potentials of the two electrode plates 11, 12. Therefore, only the potential of one electrode plate may be switched, or the absolute values of the potential difference before and after switching may not be equal to each other.
[0027]
By the way, as described above, ozone is generated even when water is electrolyzed without switching the potential difference applied to the electrode plates 11 and 12 within a short time ΔT. However, in that case, the scale of the hydroxide substance containing calcium, magnesium, etc. as a component gradually deposits on the negative electrode plate, and it becomes difficult for current to flow. No longer occurs.
On the contrary, if the time ΔT until the switching is short to some extent, the polarity is switched before the scale is deposited on the electrodes 11 and 12, so that ozone can be generated efficiently. In the present invention, when the time ΔT until the switching is within 180 seconds, the scale hardly precipitates. Therefore, it is preferable to set the switching time ΔT within 60 seconds. Most preferably, the switching time ΔT is set within 20 seconds.
[0028]
  In some examples of this aspectIs an electrolyzed water generating device that generates electrolyzed water from a liquid, and includes an electrolytic cell 1, an introduction unit 21, electrode pairs 11 and 12, a DC power source and a lead-out unit 22. The introduction part 21 pumps the liquid to the electrolytic cell 1. The electrode pair 11, 12 includes at least two plate electrodes 11, 12. The plate-like electrodes 11 and 12 are disposed in the electrolytic cell 1 so as to face each other along a substantially vertical plane and close to each other. The DC power source applies a DC voltage between the plate electrodes 11 and 12. The deriving unit 22 derives electrolyzed water generated by electrolyzing the liquid in the electrolytic cell 1 from the electrolytic cell 1. Each of the electrodes 11 and 12 has a plurality of through holes 61 and 62 formed therein. The introduction part 21 is provided in the lower part of the electrolytic cell 1. The lead-out part 22 is provided in the upper part of the electrolytic cell 1. A restriction means 40 is provided in the electrolytic cell 1. In the restricting means 40, the liquid flow from the introduction part 21 into the electrolytic cell 1 and led out from the lead-out part 22 passes through the through holes 61 and 62 of the plurality of plate-like electrodes 11 and 12. Then, the flow direction F of the liquid is regulated so as to rise while traversing the electrode pair 11, 12 in the first direction D1. The restricting means 40 is further configured so that the liquid crossing the electrode pair 11 and 12 rises while crossing the electrode pair 11 and 12 in a second direction D2 opposite to the first direction D1. The flow direction F of the liquid is regulated.
[0029]
In the present invention, generally, the portions provided with the through holes 61 and 62 of the two electrode plates 11 and 12 face each other so that the water flows obliquely upward, and the through holes 61 and 62 are completely connected to each other. It is preferable not to match. For example, each of the electrode plates 11 and 12 is provided with through holes 61 and 62 on substantially the entire surface at a predetermined pitch, and at least one of the following conditions is satisfied.
Condition (1) The phases of the through holes 61 and 62 of the two electrode plates 11 and 12 facing each other are shifted from each other vertically and / or left and right.
Condition (2) The through holes 61 and 62 of the two electrode plates 11 and 12 facing each other are set in different shapes.
Condition (3) The pitches of the through holes 61 and 62 of the two electrode plates 11 and 12 facing each other are different from each other.
[0030]
That is, when the through holes 61 and 62 of the two electrode plates 11 and 12 facing each other have the same shape, size, pitch and phase, and the through holes 61 and 62 are provided at positions where they completely coincide with each other, This is because the liquid flows through the through holes 61 and 62 in an instant, which may cause a decrease in the concentration of the electrolyzed water.
[0031]
  BookExampleIn order to remove the scale, the potential difference between the electrode pairs 11 and 12 is switched automatically or manually after a certain period of time (about 15 minutes) of operation of the electrolyzed water generator or when it is not in operation. You may make it alternate. Further, the control circuit 52 may be provided to switch the potential difference at intervals of several minutes.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig.2 (a)-FIG.6 (b) show 1st Embodiment of an electrolyzed water generating apparatus.
As shown in FIG. 2A and FIG. 4, an electrode group 10 is provided in the main body container 2 constituting the electrolytic cell 1. The electrode group 10 partitions the space inside the main body container 2 into a first chamber 31 and a second chamber 32. In the lower part of the main body container 2 on the first chamber 31 side, an introduction part 21 for pumping water to the electrolytic cell 1 is disposed. In the upper part of the main body container 2 on the first chamber 31 side, a lead-out portion 22 for leading the generated electrolyzed water from the electrolytic cell 1 is disposed.
[0033]
The electrode group 10 includes a first electrode pair 11 and 12 and a second electrode pair 12 and 13 including first, second and third electrode plates 11, 12 and 13. The first, second and third electrode plates 11, 12, 13 are arranged substantially along a vertical plane. The first and third electrode plates 11 and 13 are arranged to face the two surfaces of the second electrode plate 12 with a predetermined gap Δ. The gap Δ defines a flow path 6 through which water flows. The first, second, and third electrode plates 11, 12, and 13 are fastened by insulating assembly bolts 53 via insulating washers 50, respectively. The first and third electrode plates 11 and 13 are fixed to the first electrode terminal 71 by screws 55 through washers 51. The second electrode plate 12 is fixed to the second electrode terminal 72 with screws 55. Note that the washer 51 and the screw 55 are formed of a conductor.
[0034]
As shown in FIG. 3B, a large number (for example, 10 or more) of through holes 61 are formed in the first electrode plate 11. The third electrode plate 13 has the same shape as the first electrode plate 11. As shown in FIG. 3C, a large number (for example, 10 or more) of through holes 62 are formed in the second electrode plate 12. As shown in FIG. 2B, the through holes 61 of the first and third electrode plates 11 and 13 and the through holes 62 of the second electrode plate are shifted from each other in the left and right directions.
[0035]
As shown in FIG. 3A, between the upper part of the introduction part 21 and the lower part of the lead-out part 22 in the first chamber 31, first and third restriction plates (regulations) that divide the first chamber 31 vertically. Members) 41 and 43 are disposed. A second regulating plate 42 that divides the second chamber up and down is disposed in the second chamber 32. The second restriction plate 42 is disposed at a position above the first restriction plate 41. The third restriction plate 43 is disposed at a position above the second restriction plate 42. By arranging the regulating plates 41, 42, 43 in this way, the regulating plates 41, 42, 43 form a maze structure in the electrolytic cell 1. Each regulation plate 41, 42, 43 regulates the flow F of water from the introduction part 21 to the electrolytic cell 1 and from the lead-out part 22 so as to follow the maze. That is, water is regulated so as to rise in an S shape while traversing the electrode group 10 a plurality of times through the through holes 61 and 62 of the electrode plates 11, 12 and 13. The lower surfaces of the regulating plates 41, 42, 43 are inclined upward toward the electrode group 10. Due to this inclination, bubbles such as oxygen gas and hydrogen gas generated by electrolysis flow toward the electrode group 10 together with water. For this reason, the bubbles do not accumulate on the lower surfaces of the regulating plates 41, 42, 43.
[0036]
The restricting plates 41, 42, 43 suppress the water in the chambers 31, 32 from flowing upward. That is, the water discharged from the introduction portion 21 toward the through hole 61 of the third electrode plate 13 passes through the through holes 61 and 62 of the third, second, and first electrode plates 13, 12, 11, thereby The group 10 is introduced into the second chamber 32 across the first direction D1. The water introduced into the second chamber 32 passes through the through holes 61 and 62 of the first, second and third electrode plates 11, 12 and 13 and crosses the electrode group 10 in the second direction D 2. It flows into the space above the first regulating plate 41 in the one chamber 31. The water that has flowed into the space above the first restriction plate 41 again crosses the electrode group 10 in the first direction D1 and flows into the space above the second restriction plate 42 in the second chamber 32. The water that has flowed upward from the second restricting plate 42 again flows across the electrode group 10 in the second direction D2 into the space above the third restricting plate 43 in the first chamber 31 and is derived from the deriving unit 22. Is done.
[0037]
Now, when a voltage is applied to each of the electrode plates 11, 12, and 13 in a state where the electrolytic cell 1 is filled with water and water is discharged from the outlet portion 22, the water is electrolyzed and each electrode is electrolyzed. Oxygen gas, hydrogen gas, and the like are generated from 11, 12, 13. These gases rise together with water through the multiple through holes 61 and 62 of the electrode plates 11, 12, and 13 and the flow path 6 while traversing the electrode group 10 a plurality of times, and along with the generated electrolytic water, the lead-out portion 22. Derived through.
[0038]
Next, Ozone O_ThreeAnd residual chlorine ClO^-The mechanism of occurrence of this will be described.
The water introduced into the electrolytic cell 1 from the introduction part 21 is electrolyzed by the electrode group 10 and generated oxygen molecules O₂Etc. and flows into the second chamber 32. At this time, since the phases of the through-holes 61 of the first and third electrode plates 11 and 13 and the through-holes 62 of the second electrode plate 12 are shifted, when water passes through the electrode group 10, oxygen is added together with water. Molecule O₂Flows upward along the flow path 6. Oxygen molecules O which have risen along the flow path 6₂Is combined with oxygen atoms O generated on the electrode plate of high potential, and ozone O_ThreeIs generated. Further, since water flows across the electrode group 10 a plurality of times, when crossing the electrode group 10, the oxygen molecule O is the same as described above.₂Flows upward along the flow path 6 and oxygen molecules O₂Combined with oxygen atom O and ozone O_ThreeIs generated. As described above, the water introduced from the introduction portion 21 crosses the electrode group 10 a plurality of times, thereby causing oxygen molecules O generated by electrolysis.₂The probability of bonding between oxygen and oxygen atom O increases, so ozone O_ThreeThe probability of occurrence increases. Moreover, since many through-holes were provided in all the electrode plates 11-13 of the electrode pair and the electrode group 10, the quantity of the water which flows along the surface of the electrode plates 11-13 increases. Therefore, the ozone O_ThreeThe probability of occurrence of increases. Meanwhile, residual chlorine ClO^-With respect to chlorine ion Cl^-As the water containing water flows across the electrode group 10 multiple times, chlorine ions Cl^-Increases the probability of contact with the electrode plates 11-13. As a result, residual chlorine ClO^-The probability of occurrence increases.
[0039]
The through holes 61 and 62 of each of the electrode plates 11, 12, and 13 allow water to cross the electrode group 10, further facilitate liquid to flow into the flow path 6, and generate generated hydrogen gas or oxygen gas between the electrodes Δ It is for escape from. Accordingly, the shape of the through holes 61 and 62 may be a round hole, a long hole, a cross hole, a square hole, or a slit-like long hole. For example, as each of the electrode plates 11, 12, and 13, an expanded metal is used. May be.
[0040]
FIG. 5 shows an example of a block diagram of an electric circuit.
As shown in this figure, a DC power source 51 is connected to the first, second and third electrode plates 11, 12, 13 via a switching circuit 50. A control circuit (microcomputer) 52 is connected to the switching circuit 50. The control circuit 52 includes a timer 53 and is connected to a flow rate detection circuit 54 and a setter 55.
[0041]
The setting device 55 is for inputting a time T for switching the direction of the current flowing between the electrode plates 11, 12, 13. The switching time T set from the setting device 55 is input to the control circuit 52. Remembered. The flow rate detection circuit 54 includes a sensor 56 for detecting the flow rate of water flowing out from the electrolytic cell 1 (flow rate of water flowing into the electrolytic cell 1). When the sensor 56 detects a flow rate greater (or less) than a predetermined flow rate, the flow rate detection circuit 54 corrects a signal for correcting the switching time to be shorter (or longer) than the set switching time T. Output to the control circuit 52. When the flow rate is zero, the flow rate detection circuit 54 outputs a signal for cutting off the current flowing to each electrode plate 11, 12, 13 to the control circuit 52.
[0042]
Next, the potential and switching of the electrodes 11 to 13 will be described.
6 (a) and 6 (b), the main body container 2 constituting the electrolytic cell 1 is grounded and is always set to the ground potential. In the first state of FIG. 6A, the potentials of the first, second, and third electrode plates 11, 12, and 13 are + V, GND (ground potential), and -V (potentials lower than the ground potential), respectively. ) Is set. On the other hand, when the changeover switches 50a to 50d of the changeover circuit 50 are switched after a predetermined time by the control circuit 52 (FIG. 5), the second state shown in FIG. In the second state, the potentials of the first, second, and third electrode plates 11, 12, and 13 are set to -V, GND, and + V, respectively. Accordingly, the potential difference between the first electrode pair 11 and 12 in the electrode group 10 is switched from + V to −V, while the potential difference between the second electrode pair 12 and 13 is switched from −V to + V.
[0043]
In addition, as shown in this embodiment, even if it does not switch all the electric potentials of each electrode plates 11-13, the electric potential difference of each electrode pair can be switched and the direction through which an electric current can be switched.
[0044]
In the present embodiment, the potentials of the first and third electrode plates 11 and 13 facing the inner surface 2a of the main body container 2 are switched to + V and −V with respect to the ground electricity GND of the main body container 2, respectively. Therefore, not only can the scale be prevented from adhering to each of the electrode plates 11 to 13, but also the relative potential of the main body container 2 with respect to the first and third electrode plates 11 and 13 is alternated. Even if scale adheres, the scale dissolves.
[0045]
Next, another example of the electrode group 10 and the switching circuit 50 will be described. In addition, the structure of each electrode plate 11-15 of the electrode group 10 demonstrated below is the structure similar to the electrode plate of the said 1st Embodiment, for example which has many through-holes, The description is abbreviate | omitted. To do.
[0046]
In the embodiment of FIGS. 7A to 7D, the electrode group 10 is configured by two electrode plates 11 and 12. In this embodiment, the potentials of the electrode plates 11 and 12 are switched in the order of + V → GND → GND → −V → + V, and the potential difference between the electrode pairs 11 and 12 is switched to + V or −V.
In the present embodiment, the potentials of the electrode plates 11 and 12 may be alternately replaced with + V and −V, but in this case, the scale adheres to the inner surface 2 a of the main body container 2.
[0047]
In the embodiment of FIGS. 8A and 8B, the electrode group 10 is configured by five electrode plates 11 to 15. In this embodiment, the potentials of the first, third and fifth electrode plates 11, 13, 15 are alternately switched to + V, −V, and the electrode pairs 11, 12, electrode pairs 12, 13, electrode pairs 13, 14 and electrode pairs 14 and 15 are switched so that the potential difference alternates. The potentials of the second and fourth electrode plates 12 and 14 and the main body container 2 are always set to GND.
[0048]
In the embodiment of FIGS. 9A and 9B, the electrode group 10 is configured by five electrode plates 11 to 15. In the first state of FIG. 9A, the potentials of the first, second, third, fourth and fifth electrode plates 11, 12, 13, 14, and 15 are + V, + V / 2, and GND, respectively. , -V / 2, -V. In the second state of FIG. 9B, the polarity of each of the electrode plates 11 to 15 is reversed between positive and negative. The potentials of the third electrode plate 13 and the main body container 2 are always set to GND.
In the present embodiment, the second (fourth) electrode plate 12 (14) is not connected to the DC power source 51, and the first and third (third and fifth) 11, 13 (13, 15) Since it is disposed between them, it becomes a potential between these electrode plates.
[0049]
The inventor switches the potential of each electrode pair every 10 seconds, and measures the ozone concentration and the residual chlorine concentration when the restriction plate is not provided and when the restriction plate is provided. As a result, the ozone concentration was 1.0 mg / l and the residual chlorine concentration was 5.4 mg / l without the restriction plate. On the other hand, when the restriction plate was provided, the ozone concentration was 1.7 mg / l and the residual chlorine concentration was 7.0 mg / l. That is, it was confirmed that the ozone concentration and the residual chlorine concentration were greatly increased by providing a regulating plate and directing water to the electrode group 10 many times.
[0050]
In the present invention, as shown in FIG. 1B, the electrode group 10 is constituted by three or more electrode plates (for example, five electrode plates 11 to 15), and the introduction portion 21 is provided below the electrode group 10. And water may be introduced upward from the lower end of the electrode group 10. In this case, as indicated by an arrow F, water rises through the through holes 62 and 61 of the plurality of electrode plates 12 and 11 while traversing the electrode pair 12 and 11 in the second direction D2, or a plurality of separate plates The electrode pairs 14 and 15 are raised through the through holes 62 and 61 of the electrode plates 14 and 15 while crossing in the first direction D1. In this case, the other electrode plates act as regulating means for the two electrode plates adjacent to each other and facing each other.
[0051]
A gap may be provided between the periphery of each electrode plate and the main body container.
[0052]
【The invention's effect】
As described above, the electrolyzed water generator of the present invention is a device that strongly electrolyzes water, destroys water clusters, lowers the surface tension of water, and enhances the surface activity effect. Furthermore, since electrolyzed water containing abundant fine bubbles such as hydrogen gas and oxygen gas is generated, the action of cavitation is added in addition to the surface active effect, and the water becomes excellent cleaning water without using a detergent.
Since each electrode plate is provided with a through-hole, the liquid rises while passing through the through-hole and across the electrode pair, so that bubbles easily pass through the through-hole together with the liquid. Moreover, since chemical reactions are likely to occur in the vicinity of the through holes, the concentrations of ozone and residual chlorine in the electrolytic water are increased.
In particular, if the flow direction of the liquid is regulated so that the flow of the liquid rises in an S shape and / or an inverted S shape while traversing the electrode pair through each through hole of the electrode pair, the electrolyzed water is Since the contained liquid contacts the surface of the electrode pair many times, the concentration of ozone and residual chlorine increases.
[0053]
Further, by switching the electrode application voltage of the electrolyzed water generating device at predetermined short time intervals, the ozone concentration in water can be further increased, and the sterilized cleaning water has a sterilizing effect in addition to the cleaning effect.
[0054]
  In addition,A main body container constituting the electrolytic cell is set to a ground potential, and a first state in which the first electrode plate of the electrode pair is at a higher potential than the ground potential, and the first electrode plate is lower than the ground potential. If you can switch to the second state where the potential is low and lowEven if the scale adheres to the inner surface of the main body container, the scale dissolves into the liquid.
[Brief description of the drawings]
FIG. 1 (a) is a schematic front view showing one embodiment of an electrolyzed water generating device of the present invention, and FIG. 1 (b) is a front view showing another example of the configuration of the main part of the electrolyzed water generating device.
2A shows the electrolyzed water generating apparatus according to the first embodiment of the present invention, and is a cross-sectional view taken along line AA in FIG. 2B, and FIG. 2B is a side view showing an electrode group; It is.
3A shows the electrolyzed water generating apparatus according to the first embodiment, and is a cross-sectional view taken along line CC in FIG. 2B. FIG. 3B is a first electrode plate according to the first embodiment. (C) is a side view which shows the 2nd electrode plate.
FIG. 4 is a perspective view showing the same electrode group and a regulating plate.
FIG. 5 is a schematic configuration diagram according to the electrolyzed water generating apparatus of the first embodiment.
FIGS. 6A and 6B show the same electrode group and a switching circuit, and FIGS. 6A and 6B are schematic configuration diagrams showing states of potential switching.
FIG. 7 shows another example of an electrode group and a switching circuit, and (a) to (d) are schematic configuration diagrams showing states of potential switching.
FIGS. 8A and 8B show still another example of an electrode group and a switching circuit, and FIGS. 8A and 8B are schematic configuration diagrams showing states of potential switching, respectively. FIGS.
FIGS. 9A and 9B show still another example of an electrode group and a switching circuit, and FIGS. 9A and 9B are schematic configuration diagrams showing states of potential switching, respectively. FIGS.
[Explanation of symbols]
1: Electrolyzer
2: Body container
10: Electrode group
11, 12, 13: first, second and third electrode plates (plate electrodes)
11, 12: First electrode pair
12, 13: Second electrode pair
21: Introduction
22: Deriving part
31: First chamber
32: Second chamber
40: Restriction plate (regulation means)
41, 42, 43: first, second and third regulating plates (regulating members)
51: DC power supply
52: Control circuit
61, 62: Through-hole
D1: First direction
D2: Second direction
F: Flow direction

Claims (4)

An electrolyzed water generating device for generating electrolyzed water from a liquid,
An electrolytic cell;
An introduction section for pumping liquid to the electrolytic cell;
In the electrolytic cell, at least the first and the second electrodes are disposed so as to face each other along a substantially vertical plane, with no diaphragm provided therebetween, and at a distance of 0.5 mm to 3.0 mm . An electrode pair including first and second plate electrodes;
A DC power source for applying a DC voltage between the plate electrodes;
A lead-out unit for leading out the electrolyzed water generated by electrolyzing the liquid in the electrolytic cell from the electrolytic cell;
A flow path formed between the two plate electrodes having a potential difference from each other,
The introduction part is provided so as to introduce liquid into the flow path upward from the lower end of the flow path between the electrode pair,
The lead-out part is provided in the upper part of the electrolytic cell,
Each of the two plate electrodes has a plurality of liquids so that the liquid introduced from the introduction portion into the flow path and led out from the lead-out portion can rise while crossing the plate electrodes. A restricting plate is close to at least one of the plate-like electrodes so that a liquid passing through the through-hole of the plate-like electrode can rise while again facing the flow path. An electrolyzed water generating device arranged oppositely . 2. The electrolyzed water generating device according to claim 1, wherein the interval is set to 0.5 mm to 2.0 mm. An electrolyzed water generating device for generating electrolyzed water from a liquid,
An electrolytic cell;
An introduction section for pumping liquid to the electrolytic cell;
An electrode group including at least first, second and third plate-like electrodes disposed substantially along a vertical plane in the electrolytic cell;
A DC power source for applying a DC voltage between the plate electrodes;
A deriving unit for deriving electrolyzed water generated by electrolyzing the liquid in the electrolytic cell from the electrolytic cell;
Each plate electrode has a plurality of penetrating holes so that the liquid introduced from the introduction part to the flow path and led out from the lead-out part can rise while crossing the plurality of plate electrodes. Holes are formed,
The first and third electrode plates are arranged so as to face each other with a predetermined gap and no diaphragm between the two surfaces of the second electrode plate, and liquid flows through the gap. Defines the flow path,
The interval is set to 0.5 mm to 3.0 mm,
An electrolyzed water generating apparatus in which a liquid is introduced into the flow path from the introduction portion so that the liquid flows upward along the electrode plate along the flow path . The electrolyzed water generating apparatus according to claim 3, wherein the interval is set to 0.5 mm to 2.0 mm.

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