JP2020163291A - Portable minute bubble generation device - Google Patents

Abstract

To provide a portable minute bubble generation device which is portable and can generate minute bubbles in store liquid.SOLUTION: A portable minute bubble generation device 1, 101 which generates minute bubbles BB in liquid LQ stored in a container CP includes: a cylinder mounting part 11, 111, 111X which detachably mounts a portable gas cylinder PS with gas AR filled and leads out the gas; a porous body 21, 121 which has a gas press-in surface 21A, 121A formed of a porous material having fine pores 21P, 121P communicating in a three-dimensional mesh shape and pressing the gas in, and a gas emission surface 21B, 121B which is brought into contact with the stored liquid and emits the gas, which has been pressed in the fine pores of the porous material from the gas press-in surface, into the liquid as fine bubbles BB; and gas flow channel members 13, 15, 16, 17, 18a, 18b, 18c, 18d, 30, 130 which form a gas flow channel ARW for guiding the gas from the cylinder mounting part to the porous body.SELECTED DRAWING: Figure 1

Description

The present invention relates to a portable microbubble generator that is portable and generates microbubbles in a liquid.

Conventionally, a gas such as air is blown into a liquid such as fresh water, seawater, various aqueous solutions, oil, and an organic solvent to generate fine bubbles. Particularly in recent years, the usefulness of technology that uses a liquid that has generated microbubbles called fine bubbles, microbubbles, and nanobubbles has attracted attention. Along with this, a device for generating fine bubbles in the liquid has also been developed.

For example, in a stationary device that presses a gas into the fine pores of a porous material and generates microbubbles in the liquid in contact with the porous body, the gas opposes the liquid that invades the fine pores of the porous body. Although it depends on the size of the fine pores (average pore diameter), a gas with an increased pressure is required. Further, in industrial applications, in order to cope with continuous operation for a long time and a large flow rate, it is often used as a device that uses compressed air obtained by a compressor or compressed gas stored in a high-pressure cylinder (Fig. 1 of Patent Document 1). 1).

Japanese Patent No. 4505560

However, it is difficult to make it portable in a device using such a high-pressure cylinder or compressor.
The present invention has been made in view of the present situation, and provides a portable microbubble generator capable of generating microbubbles in a stored liquid while being portable.

One aspect of the present invention for solving the above-mentioned problems is a portable micro-bubble generator that generates micro-bubbles in a liquid stored in a container, and a portable gas bomb filled with gas is detachably attached and described above. It is composed of a cylinder mounting part that draws out gas and a porous material having fine pores that communicate in a three-dimensional network, and is brought into contact with the gas press-fitting surface for press-fitting the gas and the stored liquid, and the gas press-fitting. A porous body having a gas release surface that releases the gas pressed into the fine pores of the porous material as fine bubbles into the liquid from the surface, and the gas from the bomb mounting portion to the porous body. It is a portable microbubble generation device including a gas flow path member forming a gas flow path for guiding the gas.

In this portable micro-bubble generator, a portable gas cylinder can be mounted on the cylinder mounting part, and since the device itself is portable, there are few restrictions on where to use it, and micro-bubbles are generated in the liquid stored in the container, making it easy. , A liquid containing microbubbles can be obtained.

Examples of the liquid that generates microbubbles include water (drinking water, tap water, distilled water, ion-exchanged water, pure water, etc.), seawater, river water, methanol, ethanol, and alcohols such as IPA. Be done. Sake such as Japanese sake and wine, alcohol such as methanol, acid such as hydrochloric acid and acetic acid, sodium hydroxide, potassium hydroxide, sodium hydrogen carbonate (baking soda), alkali such as ammonia, fragrance, aqueous solution containing various water-soluble components, mixed Liquids, various culture liquids and the like can also be mentioned. Examples thereof include organic solvents such as toluene and xylene, and oils such as gasoline and kerosene.
Further, the portable gas cylinder is included as long as it is a portable gas cylinder, but it is preferable to use a lightweight and small gas cylinder that can be easily transported even if the gas capacity is small. For example, a gas cylinder containing a gas having an atmospheric pressure of less than 1 MPa, such as a push can, which is not subject to the High Pressure Gas Safety Act, can be mentioned.
In addition, as the gas filled in the portable gas cylinder and made into microbubbles, for example, air, hydrogen, nitrogen, oxygen, carbon dioxide, carbon monoxide, methane, propane, mixed gas of nitrogen and oxygen, helium, argon and the like are not used. Various gases such as active gas can be mentioned.

Examples of the material of the porous body include oxide ceramics such as alumina, titania, zirconia, mullite, and silica, nitride ceramics such as silicon nitride, porous ceramics composed of carbide ceramics such as silicon carbide, and porous glass. Be done. In addition, porous metals made of stainless steel, titanium, titanium alloys, nickel, nickel alloys, copper, copper alloys, aluminum, etc., fluororesins such as PTFE, and porous resins made of resins such as polyethylene, polypropylene, and polymethylmethacrylate are also mentioned. Be done.
Further, the gas flow path member is a member that guides gas from the cylinder mounting portion to the porous body, and is a member that performs a predetermined function such as a pressure reducing valve, and for connecting each member, for example, a gas pressure ( A tube (metal tube, resin tube) having a strength that can withstand (atmospheric pressure) can be used.

Further, in the above-mentioned portable microbubble generating device, the cylinder mounting portion may be a portable microbubble generating device which is a push can mounting portion for mounting the push can which is the portable gas cylinder.

In this device, a push can, which is a portable gas cylinder, is used, and this is attached to the push can mounting portion for use. Push cans are small, lightweight, and easy to handle because the gas pressure of the filled gas is low and they are not regulated by the High Pressure Gas Safety Act. Therefore, it is more preferable to improve the portability of the push can and the portable microbubble generator equipped with the push can.

Further, the portable microbubble generating device according to any one of the above, the portable microbubble generator including a pressure reducing valve for adjusting the supply pressure of the gas supplied to the gas press-fitting surface of the porous body in the gas flow path. It is preferable to use a microbubble generator.

In this device, the pressure reducing valve can adjust the supply pressure of the gas supplied to the gas injection surface of the porous body. Therefore, by setting the supply pressure to a desired value, the amount of generated microbubbles and the bubble diameter can be adjusted. For example, by adjusting the supply pressure to a predetermined value regardless of the air pressure in the portable gas cylinder, the size of the microbubbles released into the liquid from the gas release surface of the porous body changes with the fluctuation of the supply pressure. It is possible to stably generate microbubbles of the same size.

Further, it is preferable that the portable microbubble generating device according to any one of the above items is a portable microbubble generating device that can be operated without a power source.

Since this device can be operated without a power source, it is possible to easily generate fine bubbles in the liquid at any place.

It is explanatory drawing explaining the structure of the portable microbubble generation apparatus which concerns on Embodiment 1, and the generation of microbubbles. It is explanatory drawing explaining the structure of the portable microbubble generation apparatus which concerns on Embodiment 2. It is explanatory drawing explaining the mode that the microbubbles are generated in the liquid stored in a container by using the portable microbubble generation apparatus which concerns on Embodiment 2.

(Embodiment 1)
Hereinafter, the portable microbubble generation device 1 (hereinafter, also simply referred to as “generation device”) according to the first embodiment will be described with reference to FIG. FIG. 1 is an explanatory diagram illustrating the configuration of the generator 1 according to the first embodiment and the generation of microbubbles BB in the liquid LQ.
The generation device 1 of the first embodiment is a portable device body 10 having a caster 10C at the lower part, and bubble generation to be thrown into a liquid LQ (for example, seawater in the first embodiment) stored in the container CP. The unit 20 is composed of an external gas flow path member 30 extending from the device main body 10 and connecting to the bubble generating unit 20, and can be easily transported and moved.

Of these, a push can PS filled with gas AR (for example, oxygen in the first embodiment) is detachably held in the apparatus main body 10. In addition to the push can mounting portion 11 that is mounted on the opening head portion PSH of the push can PS to lead the gas AR in the push can PS to the outside, the pressure reducing valve 13 and the flow rate adjusting valve are mounted on the apparatus main body 10. It has 15, a flow meter 16, a stop valve 17, and internal gas flow path members 18a, 18b, 18c, 18d connecting between them to allow gas AR to flow. In these pressure reducing valve 13, flow rate adjusting valve 15, flow meter 16, stop valve 17, internal gas flow path members 18a, 18b, 18c, 18d, and the above-mentioned external gas flow path member 30, air bubbles are generated from the push can mounting portion 11. A gas flow path ARW that guides the gas AR to the generating portion 20 (the porous member 21 described later) is formed.
Further, a primary pressure gauge 12 is connected to the internal gas flow path member 18a so that the primary pressure P1 of the gas AR can be measured. Further, a secondary pressure gauge 14 is connected to the internal gas flow path member 18b so that the secondary pressure P2 of the gas AR can be measured.

The pressure reducing valve 13 provided in the gas flow path ARW sets the atmospheric pressure (primary pressure) P1 of the gas AR reached from the push can mounting portion 11 through the internal gas flow path member 18a to the atmospheric pressure (secondary pressure) of a desired magnitude. ) The pressure is adjusted to P2 and sent to the internal gas flow path member 18b on the downstream side (right side in the drawing) of the pressure reducing valve 13. Thereby, the supply pressure (secondary pressure) P2 of the gas AR supplied to the gas press-fitting surface 21A of the porous member 21 can be adjusted to a desired value. Therefore, by setting the secondary pressure (supply pressure) P2 as a predetermined value in the pressure reducing valve 13 and suppressing the fluctuation of the secondary pressure P2, the gas of the porous member 21 is accompanied by the fluctuation of the secondary pressure P2. It is possible to suppress fluctuations in the size of the microbubbles BB discharged from the discharge surface 21B into the liquid LQ, and it is possible to stably generate microbubbles BB having the same size.

Further, the flow rate adjusting valve 15 adjusts the flow rate of the gas AR flowing at the secondary pressure P2 to a desired amount.
On the downstream side (right side in the figure) of the flow rate adjusting valve 15, a flow meter 16 for detecting the flow rate of the gas AR is provided between the internal gas flow path members 18c and 18d. A stop valve 17 is provided on the downstream side (right side in the drawing) of the internal gas flow path member 18d. An external gas flow path member 30 is connected to the downstream side (right side in the drawing) of the stop valve 17. The stop valve 17 interrupts the supply of the gas AR to the bubble generating portion 20 via the external gas flow path member 30.

The external gas flow path member 30 is a resin hose having strength that can withstand the secondary pressure P2 of the gas AR, but also having flexibility.

On the other hand, the bubble generating portion 20 is formed by the cylindrical porous member 21, the proximal end connecting member 22 bonded from the proximal end side (left side in the drawing) of the porous member 21, and the distal end side of the porous member 21. It is composed of a tip closing member 23 that is coupled to (right side in the figure) and closes the inside of the porous member 21 from the tip side (right side in the figure). Of these, the porous member 21 is made of an alumina-based ceramic porous body having fine pores 21P connected in a three-dimensional network. In the first embodiment, the inner peripheral surface of the cylindrical porous member 21 is the gas press-fitting surface 21A. On the other hand, the outer peripheral surface facing the gas press-fitting surface 21A in the radial direction is the gas discharging surface 21B.

An external gas flow path member 30 is connected to the base end connecting member 22 connected to the tip end side (left side in the drawing) of the porous member 21, and the gas AR guided to the external gas flow path member 30 is used as a base. It is supplied into the porous member 21 through the end connecting member 22 and is press-fitted into the fine pores 21P of the porous member 21 from the gas press-fitting surface 21A. Then, the gas AR press-fitted into the fine pores 21P is discharged into the liquid LQ as microbubbles BB from the bubble discharge surface 21B in contact with the liquid LQ.

Thus, in the generator 1 of the first embodiment, the push can (portable gas cylinder) PS can be mounted on the push can mounting portion 11, and since the generator 1 itself is portable, there are few restrictions on the place of use, and the container CP can be used. Microbubbles BB can be generated in the stored liquid LQ to easily obtain a liquid LQ containing the microbubbles BB.

Moreover, in this generator 1, a push can PS is used as a portable gas cylinder, and this is mounted on the push can mounting portion 11 for use. Therefore, the gas can be easily handled with a small size and light weight without being regulated by the High Pressure Gas Safety Act, and the portability of the generator 1 including the attached push can PS can be further improved.

In addition, in this generation device 1, the secondary pressure (supply pressure) P2 of the gas AR supplied to the gas press-fitting surface 21A of the porous member 21 can be adjusted by the pressure reducing valve 13. Therefore, by setting the secondary pressure P2 to a desired value, the amount of microbubbles BB generated and the bubble diameter (size of bubbles) can be adjusted. Even if the primary pressure P1 in the push can PS fluctuates, such as a decrease, by adjusting the secondary pressure P2 to a predetermined value, the liquid is released from the gas release surface 21B of the porous member 21 as the secondary pressure P2 fluctuates. It is possible to suppress fluctuations in the size of the microbubbles BB released into the LQ and stably generate microbubbles BB of the same size.

Moreover, since the generator 1 can be operated without a power source, it is possible to easily generate microbubbles BB in the liquid LQ at any place.

(Embodiment 2)
Next, the portable microbubble generation device 101 (hereinafter, also simply referred to as “generation device”) according to the second embodiment will be described with reference to FIGS. 2 and 3. FIG. 2 is an explanatory diagram for explaining the configuration of the generator 101 according to the second embodiment, and FIG. 3 shows the microbubbles BB in the liquid LQ stored in the container CP using the generator 101. It is explanatory drawing explaining the state of generating.
The generator 101 of the second embodiment is a bubble that is partially or wholly immersed in the push can mounting portion 111 and the liquid LQ (for example, coffee in the second embodiment) stored in the container CP. It is composed of a generating unit 120 and an external gas flow path member 130 extending from the push can mounting unit 111 and connected to the bubble generating unit 120, and is particularly easily transportable and movable.

Of these, the push can mounting portion 111 is detachably mounted on the opening head portion PSH of the push can PS filled with gas AR (for example, nitrogen gas in the second embodiment) to attach the gas AR in the push can PS. It is a member to be derived to the outside.

On the other hand, the external gas flow path member 130 is an air supply tube made of metal or ceramics having a strength capable of withstanding the secondary pressure P2 of the gas AR. One end of the external gas flow path member 130 is connected to the push can mounting portion 111, while the other end is connected to the holding member 122 of the bubble generating portion 120 from the base end side (left side in FIG. 2) to push the can. A gas flow path ARW that guides the gas AR from the mounting portion 111 to the bubble generating portion 120 (porous member 121) is formed.

Further, the bubble generating portion 120 covers the columnar porous member 121 and the outer peripheral portion, the proximal end side (left side in the drawing), and the peripheral edge portion on the distal end side of the porous member 121, and the porous member 121 is inside. It is composed of a holding portion 122H for holding and a holding member 122 having a connecting portion 122S connected to the external gas flow path member 130. The porous member 121 is made of a fluororesin-based porous body having fine pores 21P connected in a three-dimensional network. In the second embodiment, the main surface of the columnar porous member 121 on the proximal end side (left side in FIG. 2) is the gas press-fitting surface 121A. On the other hand, the main surface on the tip side (right side in FIG. 2) facing the gas press-fitting surface 121A in the axial direction is the gas release surface 121B. Therefore, the gas press-fitting surface 121A is covered with the holding member 122, while the bubble emission surface 122B is exposed from the holding portion 122H of the holding member 122 except for the peripheral portion.

This generator 101 is used as follows. That is, the external gas flow path member 30 is connected to the holding member 122. Therefore, as shown by the arrow PO in FIG. 3, when the push can mounting portion 111 is pressed, the gas AR is released from the opening head portion PSH of the push can PS. The gas AR guided to the external gas flow path member 130 is supplied to the gas press-fitting surface 121A of the porous member 121 through the connecting portion 122S of the holding member 122, and the fine particles of the porous member 121 are supplied from the gas press-fitting surface 121A. It is press-fitted into the pore 121P. Therefore, when at least the bubble emission surface 21B of the bubble generating section 120 is submerged in the liquid LQ (in FIG. 3, the entire bubble generating section 120 is submerged in the liquid LQ), it comes into contact with the liquid LQ. From the bubble release surface 21B, the gas AR press-fitted into the fine pores 21P is released into the liquid LQ as microbubbles BB.

Thus, even in the generator 101 of the second embodiment, the push can (portable gas cylinder) PS can be mounted on the push can mounting portion 111, and since the generator 101 itself is portable, there are few restrictions on the location, and the liquid stored in the container CP. The microbubbles BB can be generated in the LQ to easily obtain a liquid LQ containing the microbubbles BB.
Moreover, since the generator 101 can also be operated without a power source, it is possible to easily generate microbubbles BB in the liquid LQ at any place.

Moreover, also in this generator 101, a push can PS is used as a portable gas cylinder, and this is mounted on the push can mounting portion 111 for use. Therefore, the gas can be easily handled with a small size and light weight, and the portability of the generator 101 including the attached push can PS can be further improved.

Although the present invention has been described above with reference to the first and second embodiments, the present invention is not limited to the above-described first and second embodiments, and is appropriately modified and applied without departing from the gist thereof. It goes without saying that you can do it.
For example, in the first embodiment, the device main body 10 is provided with the primary pressure gauge 12, the secondary pressure gauge 14, and the flow meter 16, but some or all of them may not be provided.

Further, in the second embodiment, when the push can mounting portion 111 is attached to the opening head portion PSH of the push can PS and the push can mounting portion 111 is pushed down by the pressing force PO, the opening head portion of the push can PS An example is shown in which the PSH is opened and the gas AR is sent to the external gas flow path member 130, which is an air supply tube.
However, the push can mounting portion 111X having functions such as a pressure reducing valve function and a speed controller function in the opening head portion PSH by utilizing a screw portion (not shown) provided in the opening head portion PSH of the push can PS. May be attached to control the pressure and flow rate of the gas AR sent to the bubble generating unit 120 through the external gas flow path member 130 (see FIGS. 2 and 3).
Further, in the second embodiment, the stopper was opened by pushing down the push can mounting portion 111 with the pushing force PO (see FIG. 3). However, the push can mounting portion 111X having a function such as a stop valve function or a stop valve function with a pressure gauge may be screw-mounted to the opening head portion PSH of the push can PS. In this case, the release of the gas AR through the external gas flow path member 130 can be turned on and off by rotating the knob portion provided on the push can mounting portion 111X or moving the lever portion. When the push can mounting portion 111X having a stop valve function with a pressure gauge is used, it can be used while checking the pressure of the push can PS with the pressure gauge.

1,101 Portable micro bubble generator 11,111,111X Push can mounting part (cylinder mounting part)
P1 (gas) primary pressure 13 Pressure reducing valve P2 (gas) secondary pressure (supply pressure)
18a, 18b, 18c, 18d Internal gas flow path member (gas flow path member)
20,120 Bubble generating part 21,121 Porous member (porous body, ceramic porous body)
21P, 121P Fine pores 21A, 121A Gas press-fitting surface 21B, 121B Gas release surface 30,130 External gas flow path member (gas flow path member)
AR gas ARW gas flow path PS push can (portable gas cylinder)
LQ liquid BB microbubbles

Claims (4)

A portable micro-bubble generator that generates micro-bubbles in the liquid stored in a container.
A portable gas cylinder filled with gas can be attached and detached, and the cylinder mounting part that derives the gas and the cylinder mounting part
It is made of a porous material with fine pores that communicate in a three-dimensional network.
The gas press-fitting surface into which the gas is press-fitted, and
With a porous body having a gas release surface that is brought into contact with the stored liquid and releases the gas that has been press-fitted into the fine pores of the porous material from the gas press-fit surface into the liquid as the microbubbles. ,
A portable microbubble generating device including a gas flow path member forming a gas flow path for guiding the gas from the cylinder mounting portion to the porous body. The portable microbubble generator according to claim 1.
The cylinder mounting portion is
A portable microbubble generator that is a push can mounting portion that mounts a push can that is a portable gas cylinder. The portable microbubble generator according to claim 1 or 2.
A portable microbubble generating device including a pressure reducing valve for adjusting the supply pressure of the gas supplied to the gas press-fitting surface of the porous body in the gas flow path. The portable microbubble generator according to any one of claims 1 to 3.
A portable micro bubble generator that can operate without a power source.

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