JP6993780B2 - Nano bubble generator by energization method - Google Patents

Description

The present invention relates to an improvement of a nanobubble generator that generates nanobubbles by an energization method that supplies a direct current.

Conventionally, as the electrode rod for electrolysis, an electrode rod having both poles made of titanium metal as a base material and plated with platinum has been used.
WO2014 / 148397 is known as a nanobubble generator by the above-mentioned energization method.
In this publication, a titanium metal rod is used as the conductive rod connected to the anode (+) side, and a platinum metal rod or a titanium metal rod surface is used as the conductive rod connected to the cathode (-) side. The output of the AC / DC converter is the electrode on the anode (+) side on the conductive rod side of titanium and the electrode on the cathode (-) side on the conductive rod side of platinum. Correspondingly connected configurations are disclosed.
However, if the conductive rod side of titanium is the anode and the conductive rod side of platinum is the cathode, a titanium oxide film will be formed on the titanium surface on the conductive rod of titanium connected to the anode side, and insulation will occur. Therefore, the DC current does not flow.
It is thought that this is because the conductive rod of titanium is converted into a semiconductor and becomes a diode cathode electrode, and it has been found that the above configuration has a fundamental drawback that water cannot be electrolyzed.

WO2014 / 148397

The present invention was devised to solve the above problems, and the main problem is that the output of the DC converter has a titanium conductive rod placed on the cathode side and platinum on the anode side or platinum on titanium. The purpose is to eliminate the conventional drawbacks by using a coated metal rod.

In the invention of claim 1, in order to solve the above problems, the present invention
A power source is provided in which the first electrode rod and the second electrode rod are arranged apart from each other in water or other solvent, and a DC current is supplied between the first electrode rod and the second electrode rod. In the nano bubble generator by the energization method
The first electrode rod (anode) is connected to the anode side by an electrode rod obtained by coating platinum or titanium with platinum, and the second electrode rod (cathode) is connected to the cathode side by a titanium electrode rod to generate a direct current. Being supplied,
The second electrode rod has a titanium oxide film of 50 nm or more formed on the titanium surface before electrolysis.
Along with the first and second electrode rods, a terminal of a wetted contact detection sensor which is made of a titanium rod and detects contact with a liquid is provided, and the first and second electrodes are provided by the wetted contact detection sensor. When it is detected that the rod is in a liquid, a current on the + side flows through the first electrode rod, and a current on the-side flows through the second electrode rod to perform electrolysis. It is characterized by.
In the invention of claim 2,
It is characterized in that a plurality of second electrode rods are arranged side by side at equal intervals or without gaps on concentric circles of the first electrode rods.
In the invention of claim 3,
It is characterized in that a plurality of second electrode rods are arranged at equal intervals on the circumference centered on the first electrode rod.

In the present invention, a first electrode rod made of platinum is used as an anode (+), a second electrode rod made of titanium is used as a cathode (-), and a direct current is applied to electrolyze the particles to generate nanobubbles. Can be done.
Further, by setting the second electrode rod to the cathode (−) side, a titanium anodized film may be formed on the surface of titanium.
Since the titanium oxide film exhibits semiconductor characteristics and serves as a cathode for platinum or a first electrode rod coated with platinum on the surface, it is made of platinum by using the second electrode rod as a cathode (-). Energization is possible with the first electrode rod (+).

It is a schematic diagram explaining the arrangement of the 1st and 2nd electrode rods of Example 1. FIG. It is a bottom view of a nanobubble generator. It is explanatory drawing when the nano bubble generator is set in the bathtub. It is a photograph showing the generation state of nanobubbles. It is explanatory drawing explaining the arrangement of the 1st and 2nd electrode rods of Example 2. FIG.

The first electrode rod 1 obtained by coating platinum or titanium with platinum and the second electrode rod 2 made of titanium are arranged separately from each other in water or other polar solvent, and the first electrode rod 1 is placed on the anode side. By connecting and connecting the second electrode rod 2 to the cathode side to supply a DC current, it was realized that hydrogen bubbles generated by electrolysis are generated as smaller nanobubbles.

Hereinafter, preferred embodiments in which the present invention is applied to the bath nanobubble generator 10 will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the nano bubble generator 10 by the electric current method arranges the first electrode rod 1 and the second electrode rod 2 in the electrolyte ionized water A of the bath B so as to be separated from each other. The first electrode rod 1 is used as an anode and the second electrode rod 2 is used as a cathode to supply a DC current from the power supply unit.

The first electrode rod 1 is made of a metal rod made of pure platinum or a metal rod made of pure titanium coated with platinum to a uniform thickness on the surface of the metal rod.
The second electrode rod 2 is made of a pure titanium metal rod.

As shown in FIG. 3, the nanobubble generator 10 according to the energization method of this embodiment is charged into the bathtub B and energized to generate nanobubbles.
That is, the bathtub B is filled with electrolyte ionized water, for example, ordinary water.
The nanobubble generator 10 is submerged in this water (hot water) to stand still.

The nanobubble generator 10 is provided with a power supply unit 3 for supplying DC100V.
In this embodiment, a direct current is transmitted from the power adapter (AC / DC converter) 31 connected to the AC outlet (not shown) to the rechargeable battery 12 in the rechargeable battery storage portion 11 of the nanobubble generator 10 via the charging adapter 32. It will be charged.

After charging the rechargeable battery 12 in this way, the charging adapter 32 is removed, and a DC voltage of 12 to 24 V is applied from the rechargeable battery 12 between the electrode rods 1 and 2, and the nanobubble generator 10 is used. ..

In the figure, T1 is a charging terminal provided on the first electrode rod 1, T2 is a charging terminal provided on the second electrode rod 2, and T3 is a contact that detects contact with a liquid. It is a terminal of the liquid detection sensor 5 and can be connected to the charging adapter 32.
As a result, after the wet contact detection sensor 5 detects that the electrode portions 1 and 2 are in the liquid, a current on the + side flows through the first electrode rod 1, and the negative side flows through the second electrode rod 2. The current flows and electrolysis is performed.

The first electrode rod 1 and the second electrode rod 2 are arranged in parallel at equal intervals alternately as shown in the schematic diagram in FIG.
The ends of the first electrode rod 1 are set longer than the second electrode rod 2 on one end side, and conversely, the ends of the second electrode rod 2 are both set on the other end side of the first electrode rod 2. It is set longer than the electrode rod 2.

The plurality of first electrode rods 1 are all connected to the anode (+) side at their protruding portions, and the plurality of second electrode rods 2 are connected to the cathode (-) side at their opposite protruding portions. Has been done.

Here, the cross-sectional shape of the first electrode rod 1 and the second electrode rod 2 may be any cross-sectional shape such as a polygon such as a triangle or a quadrangle, in addition to a circular shape and an elliptical shape.
The present invention is characterized in that the first electrode rod 1 is always connected to the anode (+) and the second electrode rod 2 is connected to the cathode (−).

A titanium oxide film is formed on the surface of the titanium of the second electrode rod 2 in advance.
This titanium oxide film exhibits semiconductor characteristics and serves as a cathode with respect to the first electrode rod 1. Therefore, by using the second electrode rod 2 as a cathode, electricity can be applied to the first electrode rod 1. It will be possible.

The titanium oxide film has high corrosion resistance, a long life, has a photocatalytic function and superhydrophilicity, and is easily compatible with water, so that hydrogen bubbles generated by electrolysis are generated as smaller nanobubbles.

Here, it is preferable that the second electrode rod 2 initially forms a titanium oxide film on the titanium surface, for example, about 50 nm.
FIG. 3 shows a photograph of water observed by electrolysis by the energization method of the above method.
As a result, it can be seen that a large amount of cloud-shaped hydrogen bubbles are rising, and as an example, nanobubbles having a bubble size of about 200 to 400 nm are generated at a high density.

In the above embodiment, the case where the ratio of the first electrode rod 1 and the second electrode rod 2 is 1: 1 is exemplified, but in the present invention, different ratios and arrangements may be used.
FIG. 5 is a cross-sectional view showing different combinations of the first electrode rod 1 and the second electrode rod 2.

That is, both the first electrode rod 1 and the second electrode rod 2 are made of a metal rod having a diameter of 2 mm, and the first electrode rod 1 and the second electrode rod 2 are arranged at a distance of 2 mm. However, it has a shape in which six second electrode rods 2 are arranged at intervals of 60 degrees on a circumference having a radius of 2 mm with the first electrode rod 1 as the center.

Even in this case, nanobubbles almost the same as those in the first embodiment can be generated, and cost reduction can be achieved.
In this way, a plurality of second electrode rods 2 may be arranged at equal intervals on the circumference centered on the first electrode rod 1.
The angle of the second electrode rod 2 in this case is not limited to the above embodiment, and may be arranged at equal intervals, and may be adjacent to each other with almost no gap.

Further, since the electrolysis reaction is partially determined by the input power, the platinum surface surface of the first electrode rod 1 is the second electrode, considering the loss due to the current density and the resistance value of the electrode. It does not have to be the same as the surface area of the titanium of the rod 2, and a plurality of second electrode rods 2 may be arranged at equal intervals with respect to the first electrode rod 1, whereby expensive platinum is used. It is also possible to reduce the cost by arranging one electrode rod less than the second electrode rod.

The present invention may be submerged in a bathtub to enable a hot bath effect and a hydrogen bubble bath, and is applied to a cleaning and bactericidal effect on the oral cavity or skin by nanobubbles, a redox action by hydrogen bubbles, a hydrogen water generator, and the like. be able to.
Further, electrolyzed water may be used as long as it is not limited to simple water, and can be used for various purposes such as cooking by mixing it with food and drink ingredients and boiling or boiling it.
The present invention is not limited to the above embodiment, and in short, various design changes can be made without changing the gist of the present invention.

1 1st electrode rod 2 2nd electrode rod 3 Power supply unit 10 Nano bubble generator 11 Rechargeable battery storage unit 12 Rechargeable battery 31 Power supply adapter 32 Charging adapter

Claims (3)

A power source is provided in which the first electrode rod and the second electrode rod are arranged apart from each other in water or other solvent, and a DC current is supplied between the first electrode rod and the second electrode rod. In the nano bubble generator by the energization method
The first electrode rod is connected to the anode side by an electrode rod made of platinum or titanium coated with platinum, and the second electrode rod is connected to the cathode side by a titanium electrode rod so that a direct current can be supplied. ,
The second electrode rod has a titanium oxide film of 50 nm or more formed on the titanium surface before electrolysis.
Along with the first and second electrode rods, a terminal of a wetted contact detection sensor which is made of a titanium rod and detects contact with a liquid is provided, and the first and second electrodes are provided by the wetted contact detection sensor. When it is detected that the rod is in a liquid, a current on the + side flows through the first electrode rod, and a current on the-side flows through the second electrode rod to perform electrolysis. Nano bubble generator by energization method characterized by. The nanobubble generator according to an energization method according to claim 1, wherein a plurality of second electrode rods are arranged side by side at equal intervals or without gaps on concentric circles of the first electrode rods. The nanobubble generator according to any one of claims 1 to 2 , wherein a plurality of second electrode rods are arranged at equal intervals on a circumference centered on the first electrode rod.

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