JP2020028874A - Micro bubble generator - Google Patents

Abstract

To solve problems in the conventional technique of high-speed swirling of a liquid mixed with gas to generate micro-bubbles, in which in order to separately add gas to the liquid, it is necessary to go through a process of high-speed swirling to contain micro-bubbles in the liquid, therefore its structure became complicated, and the miniaturization of bubbles is limited.SOLUTION: The present invention provides a micro bubble generator configured to connect a power supply unit for microbubble generation, in which a non-ground side of the power supply, a lamp, and a resistor are connected in series, and a microbubble generator unit acting on the liquid, so that micro-bubbles can be generated directly from a liquid, with a safe and extremely simple structure. As illustrated in FIG.1, an electric charge from a non-ground side 7 of a power supply 1 is transmitted from a lamp 3 to a microbubble generator unit 5 through a resistor 4, and passes through a ground 6 from a liquid 12 in contact with the microbubble generator unit 5. In this event, the micro-bubbles are generated from a contact surface between the microbubble generator unit 5 and the liquid 12 as long as the electric charge is continuously supplied to the liquid 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a microbubble generator that generates microbubbles from a liquid.

In recent years, the usefulness of a technique using microbubbles called micro-nano bubbles has attracted attention. For example, cleaning technology using liquid containing microbubbles, disinfection and deodorization of water, generation of ozone water, health / medical equipment field, beauty, water purification of lakes and farms, various wastewaters in factories and livestock It is used for processing and for producing functional water such as hydrogen water.

  There are devices for generating such micro-nano bubbles and nano bubbles.

Patent No. 4563496

In the related art, it is known that a liquid mixed with a gas is swirled at high speed to generate microbubbles in order to generate microbubbles.

However, in the prior art, since a gas is separately added to the liquid, the liquid must pass through a high-speed swirling process for containing microbubbles in the liquid, which complicates the structure and limits the miniaturization of the bubbles. is there.

The present invention connects a power supply unit for generating micro-bubbles in which a non-ground side of a power supply, a lamp and a resistor are connected in series, and a micro-bubble generating unit acting on a liquid, and directly outputs micro-bubbles from a liquid safely. It can be generated with a very simple configuration.

The microbubble generator is connected to the non-grounded side of the power supply, the lamp and the resistor in series, and the microbubble generator is connected to supply electric charge directly to the liquid to generate microbubbles. It is an object of the present invention to provide a configuration for easily generating microbubbles in a liquid without requiring a structure for generating high-speed turning or high-speed flow.

As shown in FIG. 1, a microbubble generating device according to the present invention includes a microbubble generating power supply unit 2 in which a non-ground side 7 of a power supply 1, a lamp 3 and a resistor 4 are connected in series, and a microbubble generating unit having electrodes. In this configuration, the liquid is directly supplied to the liquid by connecting the unit 5 to generate microbubbles.

The microbubble generating section is a portion that generates microbubbles by bringing a liquid into contact with an electrode.

In the present invention, by supplying a charge to the liquid, it is not necessary to provide a mechanical structure such as a high-speed swirling section or a high-speed flowing section for mixing a gas with the liquid and miniaturizing bubbles, and the liquid is charged in the liquid. In addition, micro bubbles can be generated.

  It is a basic circuit diagram of a microbubble generator.   It is a portable microbubble generator.   This is a microbubble generator attached to the water supply end.   This is a microbubble generator attached to the water supply source.   This is a microbubble generator that generates microbubbles of a specific gas.   It is a microbubble generator which simplified the electric circuit of FIG.   This is a microbubble generating apparatus in which a cover is attached to the broom-like microbubble generating unit in FIG.   This is a microbubble generating apparatus in which a power switch is added to FIG.   This is a microbubble generating apparatus in which a power ON / OFF switch is added to FIG.   FIG. 5 is a vertical cross-sectional view of the microbubble generator in FIGS. 3 and 4.   Water containing microbubbles (left) and tap water (right) are frozen to visualize water containing microbubbles.

As shown in FIG. 1, the electric charge from the non-ground side 7 of the power supply 1 is transmitted from the lamp 3 through the resistor 4 to the microbubble generating section 5, and from the liquid 12 in contact with the microbubble generating section 5, Pass through. At this time, the microbubbles are generated from the contact surface between the microbubble generator 5 and the liquid 12 as long as the charge is continuously supplied to the liquid 12. At this time, it is desirable that the contact portion between the liquid 12 and the microbubble generating portion 5 flows so as to increase the contact surface.

The microbubbles are confined between the liquid molecules and remain in the liquid for a while without floating. For example, when microbubbles are generated from water by the microbubble generator of the present invention, the microbubbles remain between water molecules, and the microbubbles are generated in water for about two to three days from the point where the microbubbles are generated. Continued to exist.

In FIG. 1, the lamp 3 is provided so that the power supply side can be visually checked whether it is connected to the non-ground side 7. Further, whether or not electric charge is supplied to the liquid from the microbubble generating unit 5 can be visually recognized by the lamp 3. For example, when the power supply 1 is an AC power supply and the liquid is water, microbubbles in which hydrogen and oxygen are mixed are generated.

In FIG. 1, a resistor 4 is provided in order to determine the upper limit of the amount of supply of electric charges to the microbubble generator 5. For example, when the electric charge is supplied to the water from the microbubble generator 5, if there is no upper limit, a large amount of current flows when a person touches the water, and there is a risk of electric shock. By connecting in series a resistor having an appropriate resistance value between the non-ground side 7 of the power supply 1 and the microbubble generator 5, for example, a resistance value of about 1 MΩ to 2 MΩ when the power supply is 100 V AC, People will not be shocked.

In addition, the electric current when the electric charge is supplied to the water from the microbubble generating section may be extremely weak, and for example, microbubbles can be sufficiently generated in the liquid even at about 0.1 mmA.

  FIG. 2 shows a portable microbubble generator. When the plug 8 is inserted from the power supply 1 to the non-ground side 7 and the liquid 12 in the container 11 is brought into contact with the broom-shaped microbubble generator 10, the lamp 3 is turned on. A resistor 4 for determining the upper limit of the supply of electric charge from the broom-shaped microbubble generator 10 is connected between the broom-shaped microbubble generator 10 and the non-ground side 7 of the power supply 1 inside the handle 9. Connected to When the broom-like microbubble generator 10 is brought into contact with the liquid 12 and the lamp 3 does not light, the plug 8 is connected to the ground side. Lights up, and it can be visually recognized that the circuit is connected to the non-ground side 7. When the circuit of the micro-bubble generating power supply unit 2 of FIG. 8 is used, the circuit can be closed to the non-ground side 7 by operating the changeover switch 27 of the micro-bubble generating device that can be configured as described above, and the plug 8 can be closed. Electric charges can be supplied to the microbubble generating section 5 without the need to insert and remove the power supply 1.

The portable micro-bubble generator described above, in the case of liquid 12, for example, water, moves the broom-shaped micro-bubble generator 10 in water, so that more water comes into contact with the broom-shaped micro-bubble generator 10, Fine bubbles can be generated efficiently. Further, the broom-shaped microbubble generating section 10 is desirably a shape formed by bundling a large number of thin conductors, for example, copper wires, because the contact area with water increases and microbubbles can be generated efficiently. However, when used every time, the broom-shaped microbubble generating part 10 forms an oxide film on the contact surface with the water, becomes an insulator, and it is difficult to supply electric charge from the broom-shaped microbubble generating part 10 to water. Become. In that case, make a weakly acidic solution, for example, vinegar diluted about 10 times with water in a container, immerse the broom-like microbubble generator 10 in it for about 15 minutes, remove from the container, and rinse with water. Removes the oxide film. As a result, charge is supplied again from the contact surface between the broom-shaped microbubble generating section 10 and water, and microbubbles are generated in the water.

The supply of the electric charge of the portable microbubble generator flows from the lamp 3 through the non-ground side 7 of the power supply 1 to the resistor 4, from the broom-like microbubble generator 10 to the liquid 12, and to the ground 6. In FIG. 2, when the container 11 is an insulator, the grounding portion is in a state of a condenser between the liquid 12 surface and the grounding portion 6 surface. Therefore, when the power supply 1 is an AC power supply, the lamp 3 is turned on. Micro bubbles can be generated in the liquid. Also, when the container 11 is, for example, a conductor and is energized with the grounding section 6, micro-bubbles are generated in the liquid from the broom-shaped micro-bubble generating section 10 even with a DC power supply. However, when the capacitance between the liquid 12 and the grounding part 6 is a capacitor and the capacitance is large, for example, when the distance between the surface of the liquid 12 and the conductor of the grounding part 6 is short and the surface area is large, the length is long. If the microbubble generator is left in an energized state for a long time, the liquid 12 will be charged, and there is a risk of electric shock by touching the human body. Hardly occurs.

FIG. 3 shows a water supply device 15 in which a microbubble generator 14 for mounting a device is attached to the end of the water supply device 15, and a power plug 13 having a built-in power supply unit 2 for microbubble and a microbubble generator 14 for mounting the device are connected. Is opened, microbubbles are generated from the contact surface of the water supply with the microbubble generator 14 for instrument attachment, and the water supplied from the end becomes the water supply containing the microbubbles.

FIG. 4 shows a micro-bubble generator for changing the water supply on the secondary side of the water meter 18 for water supply to water containing micro-bubbles. A grounding pipe 20b and a pressure switch 22 are connected in series on the next side, and the non-grounded side 7 of the power supply 1, the microbubble generating power supply unit 2, the pressure switch 22, and the microbubble generating unit 5 are wired. It is a connected pipe connection type. The pressure switch 22 reduces the pressure in the pipe when the water supply secondary side is opened, the electric circuit is closed, and the electric charge is supplied from the microbubble generating power supply unit 2 to the microbubble generating unit 5. Fine bubbles are generated from the contact portion of the feed water 5 and the water, and the water containing the fine bubbles is supplied to each use location, for example, a sink, a washing machine, a bathroom, a washroom, and the like.

The electric charge flows through the water supply contacting the microbubble generator 5 and the grounding pipe 20 disposed at both ends of the microbubble generator 5 to the grounding unit 6, so that the electric charge passes through the water supply having a high resistance value. There is no transfer to the external water supply beyond the water dispenser 18. When the water supply is closed, the pressure in the pipe increases, the pressure switch 22 opens the electric circuit, and stops supplying the electric charge from the microbubble generating power supply unit 2 to the microbubble generating unit 5, When the water supply is not used, the microbubble generating unit performs control to prevent unnecessary generation of microbubbles in the water supply.

FIG. 5 shows that the non-ground side 7 of the power supply unit 1, the rectifier 23, and the resistor 4 are connected in series, the microbubble generator is connected, and the branch from the non-ground side 7 makes contact with the resistor 4 and the lamp 3. A microbubble generating power supply unit in which only the negative power is supplied from an AC power supply to the microbubble generating unit, in which the units 24 are connected in series. When one type of microbubbles is used in the liquid from the AC power supply, for example, when the liquid is water, microbubbles containing only hydrogen can be generated in the water. When the connection of the rectifier 23 is reversed and only positive charges are supplied to the microbubble generator 5, water containing microbubbles containing only oxygen is generated in the water in contact with the microbubble generator 5. A circuit that branches from the non-ground side 7 and connects the resistor 4, the lamp 3, and the contact portion 24 in series is a circuit for confirming whether or not there is a connection on the non-ground side. When 3 lights up, it is understood that the whole circuit is connected to the non-ground side 7. When the power supply 1 supplies charges of the same polarity such as a DC power supply, the circuit of FIG. 5 is unnecessary.

FIG. 6 shows a microbubble generator in which the microbubble generator 5 is connected to a microbubble generator power supply unit in which the non-ground side 7 of the power supply 1, the light emitting diode 25 and the resistor 4 are connected in series. The use of the light emitting diode 25 simplifies the circuit because it plays the role of the lamp 3 and the rectifier 23 in FIG. 5, but in order to make the light emitting diode emit light, the resistance value of the resistor 4 is reduced and the charge of the electric charge is reduced. It is necessary to increase the supply amount, and it is necessary to prepare conditions such as a liquid to be easily energized.

FIG. 7 shows a configuration in which a cover 26 is arranged on the broom-shaped microbubble generating section 10 of FIG. Both can be protected from external contact with the tip, making it easy to store and carry.

FIG. 8 shows a configuration in which a changeover switch 27 between the non-ground side 7 of the power supply 1 and the grounding section 6 is connected in series to the microbubble generating power supply section 2. Since the non-grounded side 7 of the power supply 1 can be connected to the microbubble generator 5 without confirming which side, the trouble of wiring connection work can be saved. When the changeover switch 27 is switched to the non-ground side 7, the electric charge supplied from the power source 1 passes through the resistor 4 from the lamp 3, passes through the liquid 12 from the microbubble generating section 5, and passes through the ground section. 6, the lamp 3 is turned on, and microbubbles are generated from the contact surface between the microbubble generator 5 and the liquid 12. When the changeover switch 27 is switched to the grounding unit 6, the electric charge is not supplied from the power supply 1 to the microbubble generating power supply unit 2, the lamp 3 is turned off, and the microbubble generating unit 5 comes into contact. Micro bubbles are not generated from the liquid 12. Therefore, the changeover switch 27 also has a function of an open / close switch 28 that can turn ON and OFF the electric charge supplied from the power supply 1 to the microbubble generating unit.

FIG. 9 shows a microbubble generating power supply unit 2 to which an open / close switch 28 that can open and close the power supply 1 is added. Since the power can be turned off when it is unnecessary, it can be used for applications where the power supply 1 cannot be inserted or removed.

FIG. 10 is a longitudinal sectional view of the microbubble generator 5 shown in FIGS. 3 and 4, in which a flocculent conductor 40 is disposed in a hollow portion of the conductor case 30, and a net 34 for passing liquid is disposed on both end surfaces. Then, it has a role of blocking solid matter from the outside and suppressing the cotton-like conductor 40 from protruding outside. The net 34 is stopped by a fastening portion 33 so as not to protrude outside. In addition, when an object, such as a support material or another electric conductor, including the electric conductor case 30 and the cotton-like electric conductor 40, which is in a connected state with the grounding portion 6, is directly connected, the electric charge is transferred from the electric conductor liquid contact portion 32. The insulator cover 31 is arranged outside the conductor in order to prevent almost no supply to the flowing liquid 36 and almost no generation of microbubbles in the flowing liquid. When the microbubble generating section 5 is connected to a pipe, the same thing may occur even when the pipe is an electric conductor. Therefore, the socket section 35 is preferably made of an insulator. The insulator cover 31 may be an insulating paint or a bond resin for the purpose of insulating the tubular conductor case 30 and efficiently supplying the electric charge to the flowing liquid 36.

The diameter of microbubbles in the liquid is on the order of several nanometers, and the wavelength is not long in visible light, so that it is difficult to directly confirm them by visual observation. However, as an example, as shown in Photo 11, visualization can be achieved by freezing the ice 38 of tap water containing microbubbles (left) and the ice 39 of tap water containing no microbubbles (right). Water is known to expand in volume by changing to ice, but ice 38 in tap water containing microbubbles is affected by microbubbles that remain in the water during the process of expanding the volume. As a result, the ice 39 becomes white and misty, but the tap water ice 39 containing no microbubbles is not affected by the microbubbles, so that even if the volume expands, a transparent portion remains. From such a peculiar phenomenon, the presence or absence of microbubbles in the liquid can be confirmed. Tap water ice 39 containing microbubbles is ice that has been generated by generating microbubbles in tap water using the microbubble generator of the present invention and has been frozen.

The shape of the contact portion of the microbubble generating portion 5 with the liquid is not limited to the shape as shown in FIGS. 2 and 10, but may be, for example, a plate-like shape or a rod-like shape having a large surface area in contact with the liquid. I just need. The material of the contact portion of the microbubble generating portion 5 with the liquid may be a conductor such as copper or stainless steel, but there is no problem. It is preferable because stable liquid can be supplied to the liquid without trouble of removing the liquid.

The microbubble generating device of the present invention hardly passes an electric current and consumes almost no electric power. Therefore, any device that can supply a necessary voltage may be used. Alternatively, a power source boosted by an inverter from a storage battery or a storage battery may be directly used. However, when the space between the liquid 12 and the grounding portion 6 is in the state of a condenser as shown in FIG. 2, current does not flow only by charges of the same polarity such as direct current, and microbubbles do not continue to be generated in the liquid. Therefore, the power supplied from the power supply 1 to the microbubble generating power supply unit 2 does not function unless it is an alternating electric field. The grounding section 6 may use the ground side of the power supply 1.

DESCRIPTION OF SYMBOLS 1 ... Power supply 2 ... Microbubble generation power supply part 3 ... Lamp 4 ... Resistor 5 ... Microbubble generation part 6 ... Grounding part 7 ... Non-grounding side 8 ... Plug 9 Handle 10 Broom-shaped microbubble generator 11 Container 12 Liquid 13 Power plug 14 Microbubble generator 15 for mounting fixtures Water supply device 16 Sink 17・ Primary valve 18 ・ ・ Water meter 19 ・ ・ Piping 20 ・ ・ Piping 21 ・ ・ Insulated pipe 22 ・ ・ Pressure switch 23 ・ ・ Rectifier 24 ・ ・ Contact part 25 ・ ・ Light emitting diode 26 ・ ・ Cover 27 ・ ・Changeover switch 28, open / close switch 29, electric wire 30, electric conductor case 31, insulator cover 32, electric conductor liquid contact part 33, retaining part 34, net 35, socket part 36, flowing liquid 37. Liquid containing microbubbles 38. Ice 40 · flocculent conductors of tap water containing no ice 39 ... microbubbles tap water having

Claims (8)

  A microbubble generator comprising: a power supply line connected to a power supply; a lamp connected to the power supply line; a resistance element connected to the lamp; and an electrode connected to the resistance element.   The microbubble generator according to claim 1, wherein the electrode has a bundle of a plurality of electric wires, and the bundle of the electric wires has a root electrically connected to each other and a distal end side separated from each other. .   Further comprising a water pipe that can be connected to a water pipe or a water tap, wherein the electrode is a conductive tubular body provided at least inside at least a partial region along a longitudinal direction of the water pipe, And a filling made of an electric wire filled in the tubular body, and the microbubble generator has a water-permeable pipe provided upstream and downstream of the partial area of the water pipe. The microbubble generator according to claim 1 or 2, further comprising a partition, wherein the padding made of the electric wire is filled between the upstream and downstream partitions. 2. The microbubble generator according to claim 1, wherein a switch for switching between a grounded side and a non-grounded side of the power supply is connected to the microbubble generating power supply unit. 2. The microbubble generator according to claim 1, wherein a power switch is connected to the microbubble generating power supply unit. 3. The microbubble generator according to claim 2, wherein a cover is arranged at the microbubble generator. 2. The microbubble generator according to claim 1, wherein a rectifier is connected to the microbubble generating power supply. Ground wires are connected to the primary side and the secondary side with the microbubble generating part connected to the pipe and the insulator interposed, and a pressure switch is arranged on the secondary side, from the microbubble generating power supply to the microbubble generating part 2. The microbubble generator according to claim 1, which controls supply of electric charge.