CN112111750A

CN112111750A - Liquid AC electrolysis device

Info

Publication number: CN112111750A
Application number: CN201910542523.1A
Authority: CN
Inventors: 佐藤伸吉
Original assignee: Dongke Ruifu Co ltd
Current assignee: Dongke Ruifu Co ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-12-22

Abstract

The invention relates to an alternating current liquid electrolyzing device, which eliminates the situation that liquid can not be electrolyzed when a grounding electrode is changed to a positive potential in the alternating current liquid electrolyzing device. A circular electrode plate (1) is provided with support columns (2A, 2B, 2C, 2D) at four positions on the front surface, the back surface, the left side surface and the right side surface, wherein net-shaped metal electrodes (3A, 3B, 3C, 3D) having diamond-shaped holes (4) are attached to the four support columns, two positions on the front surface and the back surface are AC electrodes, two positions on the left side surface and the right side surface are ground electrodes, and the AC electrodes and the ground electrodes are periodically switched by a connection switching means (8).

Description

Liquid AC electrolysis device

Technical Field

The present invention relates to an apparatus for electrolyzing a liquid such as natural water by using an alternating current.

Background

Conventionally, when sewage such as lakes and marshes, rivers, and industrial wastewater, or liquid such as mineral water or drinking water is modified, it is common to use chemicals such as various reducing agents to cause chemical reactions to modify the sewage.

As an apparatus for modifying and improving these liquids without using a chemical such as a reducing agent, there is an alternating current electrolysis apparatus for liquids, which is characterized in that a pair of electrodes made of a metal which lowers an oxidation-reduction potential in the liquid and a single ground electrode are provided, an alternating current is applied between the pair of electrodes, and the frequency of the alternating current is controlled to periodically control the single ground electrode from a potential at ground to a positive potential, thereby reducing oxidation-reduction of the liquid (see patent document 1).

Prior art documents

Patent document 1: japanese patent laid-open publication No. 2003-236543

However, in the known technique of patent document 1, the ground electrode can be cleaned by periodically and short-term setting the potential of the ground electrode to a positive potential, but the liquid cannot be electrolytically modified at the time when the ground electrode is set to the positive potential. Further, since the liquid cannot be electrolyzed when the ground electrode is set at the positive potential, it is not preferable to set the time to a long time in terms of the efficiency of electrolysis, and therefore, the time to set the ground electrode at the positive potential is set to a short time, and therefore, when the amount of scale or the like adhering to the ground electrode is large, there is a problem that the scale cannot be sufficiently removed.

In the known technique of patent document 1, although scale or the like contained in the liquid adheres to the ground electrode which is a ground potential, the potential of the ground electrode is periodically and briefly set to a positive potential, and the scale or the like adhering to the ground electrode is removed and cleaned, thereby preventing a reduction due to adhesion of the scale or the like and improving the efficiency of electrolysis.

Disclosure of Invention

The conventional apparatus for upgrading by causing a chemical reaction using a chemical such as a reducing agent according to the prior invention has problems in that it is necessary to prepare an expensive chemical, an apparatus for causing a chemical reaction, and the like, and that it is necessary to use a chemical, and that it is necessary to use labor or a pollution is likely to occur, and that the cost is high.

In the conventional technique disclosed in the following japanese patent document 1, the ground electrode can be cleaned by periodically and short-term setting the potential of the ground electrode to a positive potential, but there is a problem that the liquid cannot be electrolytically modified at the time when the ground electrode becomes the positive potential.

The present invention has an object to firstly solve the above-mentioned problems of the apparatus for causing a chemical reaction using a chemical such as a reducing agent and secondly to solve the above-mentioned problems of the liquid alternating current electrolysis apparatus of the latter.

Technical solution for solving technical problem

On the circular electrode plate, circular metal support columns are provided at four positions in the front direction, the rear direction, the left direction and the right direction of the electrode plate, and a mesh-shaped metal electrode having diamond holes and bent at an angle of 90 degrees in an arc shape is mounted on the outer sides of the circular metal support columns, respectively.

Further, the metal ac electrodes are provided so as to face each other at two positions on the front surface side and the back surface side of the four positions, and the metal ground electrodes are provided so as to face each other at two positions on the left surface side and the right surface side of the four positions, and the redox potential of the liquid is lowered while periodically switching the metal ac electrodes provided so as to face each other at the two positions and the metal ground electrodes provided so as to face each other at the two positions by the connection switching means.

ADVANTAGEOUS EFFECTS OF INVENTION

The liquid AC electrolysis apparatus of the present invention is configured such that a circular metal support column is provided at four positions in the front, rear, left and right directions of an electrode plate on a circular electrode plate, a mesh-like metal electrode having diamond-shaped holes and bent in an arc shape at an angle of 90 degrees is attached to the outer side of the circular metal support column, a metal AC electrode is provided to face two positions of the front and rear sides among the four positions, metal ground electrodes are provided to face two positions of the left and right sides among the four positions, and the redox potential of the liquid is lowered while periodically switching the metal AC electrode provided to face the two positions and the metal ground electrode provided to face the two positions by a connection switching means, so that at the start, no scale is newly attached to the electrodes, since the ac electrode and the ground electrode are all opposed to each other in a planar manner in close proximity, the liquid can be electrolyzed satisfactorily to generate a large amount of hydrogen (active hydrogen) by applying an ac current from the pair of ac electrodes to the liquid.

In this way, when a large amount of hydrogen is generated, much scale such as calcium and magnesium mixed in the liquid is generated, and when a large amount of generated scale adheres to the ground electrode, the generation of hydrogen is reduced by the inhibition of scale thereafter, but when the metal ac electrode provided at two positions opposite to each other and the metal ground electrode provided at two positions opposite to each other are then instantaneously switched by the connection switching means, since the scale previously attached to the ground electrode by the ground electrode is removed from the new ac electrode by applying ac from the new ac electrode, by applying ac from the switched new ac electrode, it is possible to generate hydrogen continuously and in a large amount, remove the scale attached to the ground electrode by the new ac electrode, and make maintenance for cleaning the scale attached to the electrode simple and less frequent.

Further, the efficiency of using the ac electrode is increased by forming the metal electrode in a mesh shape having diamond-shaped pores, and thus the time required for ac electrolysis can be shortened. Although the detailed mechanism is not clarified, it is presumed that electrons move smoothly compared to the case of forming the ground electrode and the ac electrode as plate-like electrodes because both the ground electrode and the ac electrode are formed in a mesh shape having diamond-shaped holes.

Further, by forming the metal electrode in a mesh shape having diamond-shaped holes, the amount of metal used can be reduced, and the metal electrode can be manufactured at a low cost by reducing the amount of metal used in the ac electrolysis apparatus compared to the conventional metal plate. The weight can be reduced, and the metal AC electrode and the metal ground electrode can be made compact by easily bending them at an angle of 90 degrees in the form of a circular arc when manufacturing the AC electrode and the ground electrode.

In the liquid ac electrolysis apparatus according to claim 2 of the present invention, the circular electrode plate is provided with circular metal support columns at four positions in the front direction, the rear direction, the left direction, and the right direction of the electrode plate, and mesh-shaped metal electrodes having square holes and bent in an arc shape at an angle of 90 degrees are respectively attached to the outer sides of the circular metal support columns.

Further, since the metal ac electrodes are provided so as to face each other at two positions on the front surface side and the back surface side among the four positions, and the metal ground electrodes are provided so as to face each other at two positions on the left surface side and the right surface side among the four positions, and the oxidation-reduction potential of the liquid is lowered while the metal ac electrodes provided so as to face each other and the metal ground electrodes provided so as to face each other are periodically switched by the connection switching means, substantially the same effect as described above is obtained at the beginning because no scale is newly attached to the electrodes, and the ac electrodes and the ground electrodes are all brought close to each other in a planar manner and opposed to each other, and therefore, by applying ac current to the liquid from the pair of ac electrodes, the liquid can be electrolyzed favorably to generate a large amount of hydrogen (active hydrogen).

In this way, when a large amount of hydrogen is generated, much scale such as calcium and magnesium mixed into the liquid is generated, and when a large amount of generated scale adheres to the ground electrode, the generation of hydrogen is reduced by the inhibition of scale thereafter, but when the metal ac electrode provided at two positions relative to the ground electrode and the metal ground electrode provided at two positions relative to the ground electrode are then instantaneously switched by the connection switching means, since the scale adhering to the ground electrode, which was the ground electrode before that, is removed from the new ac electrode by applying ac from the new ac electrode, by applying ac from the switched new ac electrode, it is possible to generate hydrogen continuously and in a large amount, remove scale adhering to the ground electrode by the new ac electrode, and to make maintenance for cleaning scale adhering to the electrode simple and less frequent.

Further, the efficiency of the use of the ac electrode is increased by forming the metal electrode in a mesh shape having square holes, and thus the time required for ac electrolysis can be shortened. Although the detailed mechanism is not clarified, it is presumed that electrons move more smoothly than in the case of the plate-shaped electrode because both the ground electrode and the alternating-current electrode are formed in a mesh shape having square holes.

Further, the metal electrode formed in a mesh shape having square holes can reduce the amount of metal used, and the metal electrode can be manufactured at a low cost by reducing the amount of metal used in the ac electrolysis apparatus compared with the conventional metal plate. The weight can be reduced, and the ac electrode and the ground electrode can be easily bent at an angle of 90 degrees in the shape of a circular arc when they are manufactured, and the shapes of the metal ac electrode and the metal ground electrode can be made small.

In the liquid ac electrolysis apparatus according to claim 3 of the present invention, quadrilateral metal support columns are provided at four positions in the front direction, the rear direction, the left direction, and the right direction of the electrode plate on the quadrilateral electrode plate, and mesh-shaped metal electrodes having rhombic holes and bent at a right angle of 90 degrees are respectively attached to the outer sides of the quadrilateral metal support columns.

In this way, when a large amount of hydrogen is generated, much scale such as calcium and magnesium mixed into the liquid is generated, and when a large amount of generated scale adheres to the ground electrode, the generation of hydrogen is reduced by the inhibition of scale thereafter, but when the metal ac electrode provided at two positions opposite to each other and the metal ground electrode provided at two positions opposite to each other are then instantaneously switched by the connection switching means, since the scale previously attached to the ground electrode by the ground electrode is removed from the new ac electrode by applying ac from the new ac electrode, by applying ac from the switched new ac electrode, a large amount of hydrogen can be continuously supplied, scale attached to the ground electrode can be removed by the new ac electrode, and maintenance for cleaning scale and the like attached to the electrode can be simplified and reduced.

Further, the metal electrode formed in a mesh shape having diamond-shaped pores can reduce the amount of metal used, and the metal electrode can be manufactured at a low cost by reducing the amount of metal used in the ac electrolysis apparatus compared with the conventional metal plate. The weight can be reduced, and the metal AC electrode and the metal ground electrode can be formed in a small size by easily bending the AC electrode and the ground electrode at a right angle to 90 degrees.

In the liquid ac electrolysis apparatus according to claim 4 of the present invention, since the quadrangular metal support column is provided at four positions in the front direction, the rear direction, the left direction, and the right direction of the electrode plate on the quadrangular electrode plate, the metal mesh-like electrodes having square holes and bent at a right angle of 90 degrees are respectively attached to the outer sides of the quadrangular metal support column, the metal ac electrodes are provided so as to face two positions of the front surface side and the back surface side among the four positions, the metal ground electrodes are provided so as to face two positions of the left surface side and the right surface side among the four positions, and the oxidation-reduction potential of the liquid is reduced while the metal ac electrodes provided so as to face the two positions and the metal ground electrodes provided so as to face the two positions are periodically switched by the connection switching means, substantially the same effect as described above, at the beginning, since new scale is not attached to the electrodes, and the ac electrode and the ground electrode are all opposed to each other in a planar manner in close proximity, it is possible to generate a large amount of hydrogen (active hydrogen) by electrolyzing a liquid well by applying an ac current from a pair of ac electrodes to the liquid.

In this way, when a large amount of hydrogen is generated, much scale such as calcium and magnesium mixed into the liquid is generated, and when a large amount of generated scale adheres to the ground electrode, the generation of hydrogen is reduced by the inhibition of scale thereafter, but when the metal ac electrode provided at two positions facing each other and the metal ground electrode provided at two positions facing each other are then instantaneously switched by the connection switching means, since the scale previously adhering to the ground electrode as the ground electrode is removed from the new ac electrode by applying ac from the new ac electrode, by applying ac from the switched new ac electrode, a large amount of hydrogen can be continuously supplied, scale adhering to the ground electrode can be removed by the new ac electrode, and maintenance for cleaning scale adhering to the electrode and the like can be simplified and reduced.

Further, the metal electrode formed in a mesh shape having square holes can reduce the amount of metal used, and the metal electrode can be manufactured at a low cost by reducing the amount of metal used in the ac electrolysis apparatus compared with the conventional metal plate. The weight can be reduced, and the metal ac electrode and the metal ground electrode can be formed in a small shape by easily bending the angle to 90 degrees when manufacturing the ac electrode and the ground electrode.

In the liquid ac electrolysis apparatus according to claim 5 of the present invention, since the frequency output from the metal ac electrode before the connection switching and the frequency output from the metal ac electrode facing the metal ac electrode at the two positions and switched by the connection switching means are set to the same frequency with respect to the frequency output from the metal ac electrode provided at the two positions, it is possible to generate a large amount of hydrogen by electrolyzing the liquid favorably by applying ac from the ac electrode, and to generate a large amount of hydrogen by electrolyzing the liquid favorably by applying ac from the metal ac electrode switched by the switching means, substantially similarly to the above-described effects.

In the liquid ac electrolysis apparatus according to claim 6 of the present invention, the frequencies output from the metal ac electrodes that are provided at two positions so as to face each other and that are switched by the connection switching means are set to frequencies higher than the frequency output from the metal ac electrode before the connection switching, and therefore, when ac is applied to the liquid from the ac electrode, a high frequency is output from the switched metal ac electrode, and therefore, electrolysis can be performed satisfactorily, and more hydrogen can be generated.

Since the frequencies are different, a large amount of hydrogen can be continuously generated by applying ac from the new ac electrode that is switched.

Further, since the scale deposited on the old ground electrode can be removed much more by applying a high-frequency ac current from the switched new ac electrode, more hydrogen can be continuously generated by applying an ac current from the new ac electrode.

In the liquid ac electrolysis apparatus according to claim 7 of the present invention, the metal ac electrode and the metal ground electrode are preferably made of a metal having a reduced oxidation-reduction potential, such as platinum-plated titanium, platinum, zinc, lithium, magnesium, aluminum alloy, copper, iron, nickel, stainless steel, or titanium, and therefore can be used in a stable state for a long period of time.

Drawings

Fig. 1 is a plan view of the main part of the apparatus of the present invention.

Fig. 2 is a front view of the main part of the device in fig. 1.

Fig. 3 is a perspective view of a main part of the device in fig. 1.

Fig. 4 is a front view of a part of the main part of the device in fig. 1.

Fig. 5 is a perspective view with circuit diagram of the main part of the device in fig. 1.

Fig. 6 is a plan view of a main part of a second device of the present invention.

Fig. 7 is a front view of a main part of the second device in fig. 6.

Fig. 8 is a plan view of a main part of a third device of the present invention.

FIG. 9 is a front view of a main part of the third device in FIG. 8

Fig. 10 is a plan view of a main part of a fourth apparatus of the present invention.

Fig. 11 is a front view of a main part of the fourth device in fig. 10.

Fig. 12 is another circuit diagram of the present invention.

Fig. 13 is a front view of the device of the present invention in use.

Description of the reference numerals

1 round electrode plate

2 circular metal pillar

3 mesh-type metal electrode

4 diamond hole

6 liquid AC electrolyzer

7 cylindrical container

8 connection switching unit

Detailed Description

An AC electrolysis apparatus for a liquid, wherein a circular metal support column is provided at four positions in the front, rear, left and right directions of an electrode plate in a circular electrode plate type, a mesh-shaped metal electrode having diamond-shaped holes and bent in an arc shape at an angle of 90 degrees is attached to the outer side of the circular metal support column, a metal AC electrode is provided to face two positions of the front and rear sides among the four positions, a metal ground electrode is provided to face two positions of the left and right sides among the four positions, and the oxidation-reduction potential of the liquid is lowered while periodically switching the metal AC electrode provided to face the two positions and the metal ground electrode provided to face the two positions by a connection switching means.

Next, the circuit will be explained.

As shown in fig. 5, the high frequency generated by the high frequency Oscillator (OSC)17 is connected from the high frequency switching instruction circuit 16 to the first switch 11A and the second switch 11B via the

resistors

15A, 15B, respectively.

In this circuit, the above-described first and second switches are respectively constituted by

transistors

12A, 12B,

transistors

13A, 13B, and a capacitor 14 and the changeover switches 8A, 8B, 8C, 8D, a relay 8E, and a timer 8F as the connection switching unit 8 are connected. Note that reference numeral 9 denotes a power supply, and reference numeral 10 denotes a resistor.

When the liquid ac electrolysis device 6 is connected to the circuit for use, as shown in the lower part of fig. 5, one of the change-over switches 8A is connected to the ac electrode 2A of the liquid ac electrolysis device and the other change-over switch 8B is connected to the ground electrode 2C, and the other change-over switch 8C is connected to the ac electrode 2B of the liquid ac electrolysis device and the other change-over switch 8D is connected to the ground electrode 2D via the capacitor 14.

In addition, other circuits are described.

As shown in fig. 12, the circuit is different from the above-described circuit in that a changeover switch 51 is provided on a wiring 49 from a power supply 48, one of the wirings 49 is set to a constant voltage, for example, 10V (volts) by the changeover switch 51, and a transformer 52 is provided in the middle of the other wiring 49A to transform the voltage to, for example, 60V (volts) to 80V.

The wired switch 51 is connected to the timer 8F connected to the switching means, and is switched at predetermined intervals under the instruction from the timer connected to the switching means.

In the circuit of the liquid ac electrolysis apparatus, both of the two wirings are connected to a high frequency Oscillator (OSC) 17.

By providing two wires, a selector switch, a transformer, a timer connected to the switching unit, etc., the second half generates a higher frequency than the first half (for example, a frequency of 30KHz), for example, a high frequency of 60KHz to 80 KHz.

[ example 1 ]

As shown in fig. 1 to 5,

metal support columns

2A, 2B, 2C, and 2D are provided at four positions on the front surface side, the back surface side, the left side, and the right side in the center of the electrode plate 1, and mesh-shaped

metal electrodes

3A, 3B, 3C, and 3D having diamond holes 4 and bent at an angle of 90 degrees in an arc shape are attached to the outer sides of these circular metal support columns.

The

metal ac electrodes

3A and 3B of the four metal electrodes are provided at two positions on the front side and the back side so as to face each other, and the

metal ground electrodes

3C and 3D of the four metal electrodes are provided at two positions on the left side and the right side so as to face each other.

In the device 6, the liquid contained in the cylindrical container 7 is decomposed by an alternating current while the alternating

current electrodes

3A and 3B and the

metal ground electrodes

3C and 3D are switched to be opposite to each other at predetermined intervals by the connection switching means 8.

The connection circuit and the like of the connection switching unit 8 used in the liquid ac electrolysis apparatus 6 of example 1 are as described above and shown in fig. 5.

When the ac electrolysis apparatus 6 for a liquid of this example 1 is set in the cylindrical container 7 and the power is turned on, the first ac electrodes are the front and

rear side electrodes

3A, 3B, and the ground electrodes are the left and

right side electrodes

3C, 3D.

When the predetermined time for applying the voltage output from the ac electrode is, for example, 10 minutes, the high frequency output from the ac electrode is applied to the liquid for 10 minutes, and therefore the liquid is electrolyzed to generate hydrogen.

When switching is performed by the connection switching means 8 which periodically performs switching immediately after 10 minutes has elapsed, the ac electrodes at the second time become the left and

right electrodes

3C, 3D, so that the liquid is electrolyzed to generate hydrogen by applying a high frequency output from the ac electrodes to the liquid.

The ground electrodes in this case are the front and

rear electrodes

3A and 3B.

In this case, the magnitude of the frequency output from the ac electrode and the ac application time may be changed to a more appropriate frequency or the ac application time may be changed depending on the amount of the liquid or the like.

[ example 2 ]

As shown in fig. 6 and 7, the liquid ac electrolysis apparatus 16 is substantially the same as the liquid ac electrolysis apparatus of example 1, but is different from the liquid ac electrolysis apparatus of example 1 in that mesh-

like metal electrodes

13A, 13B, 13C, 13D having square holes 14 and bent at an arc-like angle of 90 degrees are attached to the outer sides of four circular

metal support columns

12A, 12B, 12C, 12D, respectively. Further, reference numeral 11 is a circular electrode plate.

In this example 2, the same as the liquid ac electrolysis apparatus of the above example 1 is used, the first ac electrodes are the front and

rear electrodes

13A and 13B, the ground electrodes are the left and right electrodes 13C and 13D, the ac electrodes which are periodically switched are the left and right electrodes 13C and 13D, and the ground electrodes are the front and

rear electrodes

13A and 13B.

Since the high frequency alternately outputted from the ac electrode is applied to the liquid at the first time and the second time, the liquid contained in the cylindrical container 7 is subjected to ac electrolysis to generate hydrogen.

[ example 3 ]

As shown in fig. 8 and 9, the ac liquid electrolyzer of example 1 is substantially similar in main part to the ac liquid electrolyzer of example 1, but is different from the ac liquid electrolyzer of example 1 in that quadrangular

metal support columns

22A, 22B, 22C, 22D are provided at four positions on the front side, the back side, the left side and the right side in the center of the quadrangular electrode plate 21.

In the liquid ac electrolysis apparatus 26, mesh-

like metal electrodes

23A, 23B, 23C, and 23D having diamond-shaped holes 24 and bent at a right angle of 90 degrees are attached to the outer sides of the rectangular metal support columns, and the

metal ac electrodes

23A and 23B and the

metal ground electrodes

23C and 23D are switched by a connection switching means (not shown) so that the ac electrodes and the ground electrodes are switched at predetermined intervals and vice versa.

The liquid AC electrolysis apparatus is used by being housed in a quadrangular container (not shown).

[ example 4 ]

As shown in fig. 10 and 11, the ac liquid electrolyzer 36 is substantially the same as the ac liquid electrolyzer of example 3, except that

metal electrodes

33A, 33B, 33C, 33D having rectangular holes 34 and mesh-like shapes bent at right angles to 90 degrees are attached from the inside to the outside of four rectangular

metal support columns

32A, 32B, 32C, 32D, and the

ac metal electrodes

33A, 33B and the

ground metal electrodes

33C, 33D are switched by connection switching means (not shown) so that the ac electrodes and the ground electrodes are switched at predetermined intervals.

The liquid AC electrolytic apparatus 36 was used by being housed in a large container 37 shown in FIG. 13.

In the liquid ac electrolysis apparatus according to claims 1 to 4, the frequency output from the metal ac electrode is about 20KHz when the power supply is 10V (volts), and the frequency may be the same before and after switching the ac electrode.

In the liquid ac electrolyzing apparatus according to claim 1 to 4, the frequency of the ac electrode made of metal may be set to 10V (volt) and the frequency may be set to about 20KHz before the ac electrode is switched, and may be set to 80V (volt) and the frequency may be set to about 70KHz after the ac electrode is switched.

Claims

1. A liquid alternating current electrolysis device, wherein,

a circular metal support column is provided at four positions in the front, rear, left and right directions of an electrode plate on the circular electrode plate, a mesh-shaped metal electrode having diamond-shaped holes and bent at an angle of 90 degrees in an arc shape is attached to the outer side of the circular metal support column, metal AC electrodes are provided at two positions of the front and rear surfaces of the four positions so as to face each other, metal ground electrodes are provided at two positions of the left and right surfaces of the four positions so as to face each other, and the oxidation-reduction potential of a liquid is lowered while periodically switching the metal AC electrodes provided at the two positions and the metal ground electrodes provided at the two positions so as to face each other by connection switching means.

2. A liquid alternating current electrolysis device, wherein,

a circular electrode plate is provided with circular metal support columns at four positions in the front, rear, left and right directions of the electrode plate, mesh-shaped metal electrodes having square holes and bent at an angle of 90 degrees in a circular arc shape are attached to the outer sides of the circular metal support columns, metal AC electrodes are provided at two positions of the front and rear sides of the four positions so as to face each other, metal ground electrodes are provided at two positions of the left and right sides of the four positions so as to face each other, and the redox potential of a liquid is lowered while periodically switching the metal AC electrodes provided at the two positions and the metal ground electrodes provided at the two positions so as to face each other by connection switching means.

3. An alternating-current liquid electrolysis device is provided,

in the quadrangular electrode plate, quadrangular metal support columns are provided at four positions in the front, rear, left and right directions of the electrode plate, a mesh-shaped metal electrode having diamond-shaped holes and bent at a right angle of 90 degrees is attached to the outer sides of the quadrangular metal support columns, metal ac electrodes are provided at two positions of the front and rear sides of the four positions so as to face each other, metal ground electrodes are provided at two positions of the left and right sides of the four positions so as to face each other, and the redox potential of the liquid is lowered while periodically switching the metal ac electrodes provided at the two positions and the metal ground electrodes provided at the two positions so as to face each other by connection switching means.

4. A liquid alternating current electrolysis device, wherein,

in the quadrangular electrode plate, quadrangular metal support columns are provided at four positions in the front direction, the rear direction, the left direction and the right direction of the electrode plate, a mesh-shaped metal electrode having a square hole and bent at a right angle of 90 degrees is attached to the outer side of each of the quadrangular metal support columns, metal alternating-current electrodes are provided at two positions of the front surface side and the back surface side of the four positions so as to face each other, metal ground electrodes are provided at two positions of the left surface side and the right surface side of the four positions so as to face each other, and the redox potential of a liquid is lowered while periodically switching the metal alternating-current electrodes provided at the two positions and the metal ground electrodes provided at the two positions so as to face each other by connection switching means.

5. The liquid AC electrolysis device according to any one of claims 1 to 4,

the frequency output from the metal ac electrode before the connection switching is the same as the frequency output from the metal ac electrode after the connection switching.

6. The liquid AC electrolysis device according to any one of claims 1 to 4,

the frequency output from the metal ac electrode after the connection switching is higher than the frequency output from the metal ac electrode before the connection switching.

7. A liquid AC electrolysis device according to any one of claims 1 to 4 wherein,

the metal for lowering the oxidation-reduction potential is a metal having no solubility, which is composed of platinized titanium, platinum, zinc, lithium, magnesium, aluminum alloy, copper, iron, nickel, stainless steel, or titanium.