JP2022117919A - Micro bubble amplification device - Google Patents

Abstract

To provide a micro bubble generating device which suppresses decrease in water flow rate due to clogging of a transportation pipe, and quality deterioration.SOLUTION: A micro bubble generating device 100 generates micro bubbles in water A. The micro bubble generating device 100 comprises: a metal transportation pipe 1 which transports the water A; and at least a pair of magnets 21, 21 arranged sandwiching the transportation pipe 1 such that an N pole opposes to an S pole. The transportation pipe 1 is in a flat shape in which an inner diameter D1 in a width direction in a cross section vertical to an axis is larger than an inner diameter D2 in a thickness direction orthogonal to the width direction, the pair of magnets 21, 21 are arranged opposed to each other in the width direction. A ratio (D2/D1) of the inner diameter D2 in the thickness direction to the inner diameter D1 in the width direction is 0.3 or more and 0.6 or less, and magnetic flux density of the whole inside of the transportation pipe 1 is formed to be 99 mT or ore by the magnets 21, 21.SELECTED DRAWING: Figure 1

Description

There is an application for the application of Article 30, Paragraph 2 of the Patent Act ・On February 5, 2021, Hideo Nakashoya, representative of Tenso Electromagnetic Technology Co., Ltd., handed over a handmade catalog to Value Planning Co., Ltd. and Interior Nakashoya Co., Ltd. At the same time, we offered to handle the microbubble generator Rich Fine Bubble shown in the photograph of Attachment 1 as an agent, and on February 5, Interior Nakashoya Co., Ltd. and on February 6, signed an agency contract with Value Planning Co., Ltd.・On February 25, 2021, Tenso Electromagnetic Technology Co., Ltd. received an order for the microbubble generator Rich Fwine Bubble shown in Attachment 1 from Value Planning Co., Ltd. Based on this, Tenso Electromagnetic Technology Co., Ltd. directly delivered the microbubble generator Rich Fine Bubble to Value Planning Co., Ltd. on March 8 of the same year, Mr. Takahiro Magami.・On February 26, 2021, Hideo Nakashoya, representative of Tenso Electromagnetic Technology Co., Ltd., distributed the official catalog shown in Attachment 3 to Value Planning Co., Ltd. and Interior Nakashoya Co., Ltd. · Hideo Nakashoya, representative of Tenso Electromagnetic Technology Co., Ltd., requested Value Planning Co., Ltd. to post the microbubble generator Rich Fine Bubble on the Value Planning Co., Ltd. website.・ On April 13, 2021, Tenso Electromagnetic Technology Industry Co., Ltd. posted the trademark of the microbubble generator (Rich Fwine Bubble) on its website, and Value Planning Co., Ltd. as a sales agent, Interior Nakashoya Co., Ltd., and Rich Fine Bubble Dealer (Sales Department of Tenso Electromagnetic Technology Co., Ltd.).・On April 26, 2021, Hideo Nakashoya, the representative of Tenso Electromagnetic Technology Co., Ltd., transferred Rich Fwine Bubble to Value Planning Co., Ltd., Social Wire Co., Ltd. (3-9-1 Shibaura, Minato-ku, Tokyo) (6th floor of the tower), I requested that it be posted on the net news through the newscast operated by. It was published in 11 electronic news newspapers shown in the public place.

The present invention relates to a technique for forming microbubbles called microbubbles or ultrafine bubbles in a liquid, and more particularly to a technique for generating microbubbles by electrolyzing an electrolytic solution.

BACKGROUND ART Conventionally, a method of generating microbubbles composed of hydrogen and oxygen in water by electrolyzing water is known (see Patent Documents 1 to 3).
For example, Patent Document 1 proposes a microbubble generator that electrolyzes water using titanium as an anode and platinum as a cathode. A microbubble generator has been proposed.

In the microbubble generators of Patent Documents 1 and 2, there is a problem that an oxide film is formed on the surface of the anode. We have proposed a microbubble generator that is filled with charcoal chips and suppresses the formation of an oxide film on the electrode by the reducing power of the charcoal chips.

However, the microbubble generating device of Patent Document 3 has a problem that it is inconvenient to carry because the device becomes large due to the battery, and a problem that it cannot be used when the battery runs out. , in Patent Document 4, a water flow passage is filled with Bincho charcoal chips or stainless steel balls, and a magnetic field is applied in a direction intersecting the flowing water to generate a vortex electromotive force in the flowing water. We have proposed a microbubble generator that electrolyzes water on the surface of Binchotan charcoal or stainless steel balls by electromotive force.

WO2014/148397 JP 2018-020313 A JP 2020-151640 A Japanese Patent Application No. 2020-073784

However, in the microbubble generator according to Patent Document 4, since a sufficient amount of water cannot be secured due to the resistance of the binchotan charcoal chips and stainless steel balls filled in the flow channel, the flow channel has to be arranged in parallel, resulting in an increase in the size of the device. In addition, rust and impurities in the piping clog gaps between chips and the like, causing problems such as a decrease in the amount of water and a problem of deterioration in water quality with use.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a microbubble generating apparatus capable of ensuring a sufficient flow rate of the electrolytic solution to be processed and suppressing quality deterioration of the formed microbubble-containing liquid. do.

The invention made to solve the above-mentioned problems is a microbubble generator for generating microbubbles in an electrolytic solution, comprising: a metal flow pipe for feeding the electrolytic solution; At least a pair of magnets are provided so that the N pole and the S pole are opposed to each other, and the flow tube has a flat shape in which the inner diameter D1 in the width direction in the cross section perpendicular to the axis is larger than the inner diameter D2 in the thickness direction perpendicular to the width direction. None, the pair of magnets are provided so as to face each other in the width direction, and the ratio (D2/D1) of the inner diameter D2 in the thickness direction to the inner diameter D1 in the width direction is 0.3 or more and 0.6 or less. , wherein the entire inside of the flow tube is formed to 99 mT or more by the magnet.
As used herein, the term "electrolytic solution" refers to a liquid that is electrolyzed to generate bubbles when an electric current is applied.

In this way, the flatness ratio (D2/D1) of the cross section perpendicular to the axis of the metal flow tube is set to 0.3 or more and 0.6 or less, and the pair of magnets are opposed in the width direction (major axis direction). By forming a magnetic flux density of 99 mT or more in at least a part of the flow pipe and flowing the electrolytic solution into the flow pipe, sufficient An electromotive force is generated, and this electromotive force electrolyzes the electrolytic solution to generate microbubbles in the flow tube.
In addition, since the flow pipe is not filled with conductive chips, a sufficient flow rate of the electrolytic solution can be ensured, and clogging of the flow pipe with rust and impurities can be suppressed.

It is preferable that a plurality of pairs of the magnets are arranged along the longitudinal direction of the flow pipe while alternately interchanging N poles and S poles. By doing so, the magnetic field can be changed more greatly with respect to the direction in which the electrolytic solution flows, so that a greater electromotive force can be generated in the flow tube, and microbubbles can be efficiently generated.

Preferably, the longitudinally adjacent magnets are connected by a yoke. By doing so, the magnetic field can be strengthened and microbubbles can be generated more efficiently.

It is preferable that a plurality of the flow pipes be folded back and pass through between the pair of magnets. By doing so, microbubbles can be repeatedly generated in the electrolytic solution, so that more microbubbles can be generated.

It is preferable that at least one of the inner surfaces of the flow pipe, which face each other in the thickness direction, is formed in a chevron shape or a wavy shape. By doing so, the contact area between the inner surface and the electrolytic solution can be increased, so that microbubbles can be generated more efficiently.

As described above, according to the microbubble generator of the present invention, since microbubbles can be generated without filling the inside of the flow tube with a conductive chip, a sufficient flow rate of the electrolytic solution passing through the flow tube can be ensured. In addition, it is possible to suppress quality deterioration of the electrolytic solution due to clogging of the conductive chip with dust and impurities.

BRIEF DESCRIPTION OF THE DRAWINGS It is the (a) front view and (b) top view which showed typically the micro-bubble generator which concerns on 1st Embodiment of this invention. 1. It is explanatory drawing of the principle which an electromotive force generate|occur|produces in the micro-bubble generator shown in FIG. It is an enlarged view of the XX section in FIG. 1(a). FIG. 2 is an explanatory diagram of a heating test according to Example 1 and Comparative Examples 1 and 2; BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the usage example 1 of the micro-bubble generator of this invention. It is a schematic diagram which shows the usage example 2 of the micro-bubble generator of this invention. FIG. 3 is a schematic diagram showing a usage example 3 of the microbubble generator of the present invention. FIG. 4 is a schematic diagram showing a fourth usage example of the microbubble generator of the present invention. FIG. 3 is a schematic cross-sectional view showing another example of a flow tube, in which (a) to (f) are cross sections perpendicular to the axis of the flow tube, and (g) is parallel to the axis of the flow tube and has a thickness. It shows a cross-section cut in the direction. FIG. 4 is an explanatory diagram showing measurement points of magnetic flux density in a flow pipe;

Embodiments of the present invention will be described below. However, the present invention is not limited to the following embodiments.
FIG. 1 shows a microbubble generator 100 according to one embodiment of the invention. The microbubble generator 100 generates microbubbles in the electrolytic solution A by electrolyzing the electrolytic solution A. As shown in FIG. The microbubble generator 100 mainly includes a metal flow pipe 1 for feeding the electrolytic solution A, and a plurality of pairs of magnetic circuits 2, 2, . . .

Electrolyte A may be tap water, mineral water, or the like, which is electrolyzed to generate hydrogen and oxygen when an electric current is applied, or salt water, which is electrolyzed to generate hydrogen and chlorine. Therefore, substances other than hydrogen and oxygen that generate microbubbles may be used.

The inflow pipe 1 is made of a metal pipe, and as shown in FIG. ) has a flat shape larger than the inner diameter D2. The flatness ratio (D2/D1), which is the ratio of the inner diameter D2 in the thickness direction to the inner diameter D1 in the width direction, is set to 0.3 or more and 0.6 or less. When D2/D1 is less than 0.3 or exceeds 0.6, there is a possibility that microbubbles cannot be sufficiently generated.

As shown in FIG. 1(a), the flow pipe 1 is a single flat pipe folded in two in the thickness direction, and two flow pipes consisting of an outward pipe 11 and a return pipe 12 are overlapped in the thickness direction. It is set up like this. Both ends of the flow pipe 1 are connected to the upstream pipe and the downstream pipe outside the microbubble generator 100 by pipe joints 3 such as cap nuts. The inflow tube 1 may be folded so as to overlap three or more.

Further, in the present embodiment, as shown in FIG. 3, the flow tube 1 has surfaces 1a, 1a facing in the thickness direction formed of flat surfaces parallel to each other, and surfaces 1b, 1b facing in the width direction being curved surfaces. The cross section of the flow pipe 1 is substantially track-shaped, and as shown in the flow pipe 1A in FIG. may be rectangular, or the inner surfaces of the surfaces 1a and 1a facing in the thickness direction may be formed in a chevron shape or a wave shape, as in the flow pipes 1B to 1G in FIGS. The contact area with the electrolyzed water can be increased by making each example as shown in FIG.
Specifically, FIG. 9(b) shows an example in which the surfaces 1a, 1a facing each other in the longitudinal direction are formed in a mountain shape that curves to the same side (upper side in the figure). The surfaces 1a, 1a opposed in the longitudinal direction are corrugated examples in which ridges and ridges and troughs are aligned. An example of forming a mountain shape that curves outward in the thickness direction, FIG. The flow pipe 1F of (f) is an example in which the inner surfaces of the surfaces 1a, 1a facing each other in the thickness direction are formed with corrugations having a triangular cross-section, and the flow pipe 1G of FIG. It shows an example in which corrugations with a triangular cross-section line up in the longitudinal direction. The example shown in the figure is formed by flattening a circular tube with a female thread formed on the inner surface, and the corrugations are connected in a spiral shape. However, the corrugations may be arranged concentrically in the longitudinal direction of the flow tube 1G.
It should be noted that the chevron or wavy shape may be formed only on one of the inner surfaces facing each other in the thickness direction, or may be formed on a part of the flow pipe in the longitudinal direction.

As the material of the flow tube 1, iron, stainless steel, brass, and other metals can be appropriately used, but austenitic stainless steel such as SUS304, which is difficult to oxidize, is preferable.
3 indicates that the electrolyte A flows in the depth direction, and the symbol with a dot in the circle indicates that the electrolyte A flows toward the front side of the paper.

The magnetic circuit 2 includes two pairs (four pieces) of magnets 21, 21, 21, 21 arranged in the longitudinal direction of the flow tube 1 (horizontal direction in FIG. 1(b)). A pair of iron yokes 22, 22 connecting two magnets 21, 21 arranged on the same side of the tube 1 is provided. The two pairs of magnets 2121, . As shown in FIG. 3, each pair of magnets 21, 21 is arranged so as to face both the forward pipe 11 and the return pipe 12 of the flow pipe 1 in the width direction thereof. In addition, the code|symbol 9 in a figure has shown the casing.

It is important that the magnetic force generated in the flow tube 1 by the magnetic circuit 2 is 99 mT or more as a whole, and preferably 127 mT or more as a whole. By doing so, it is possible to sufficiently generate microbubbles in the flow tube.

When using the microbubble generator 100, as shown in FIG. Remove liquid B.
As shown in FIG. 2, when the electrolytic solution A that has flowed into the flow pipe 1 approaches the pair of magnets 21A, 21A facing each other with the flow pipe 1 interposed therebetween, the magnetic force applied to the electrolytic solution A gradually increases. In order to weaken this magnetic force according to the so-called right-handed screw rule, a magnetic field opposite to the magnetic field formed by the pair of magnets 21, 21 is formed to form a magnetic field indicated by symbol C1. A vortex-type electromotive force is generated in such a direction of rotation. When the electrolytic solution A moves away from the pair of magnets 21, 21, the magnetic force gradually weakens (the magnetic flux density decreases). In order to form a magnetic field, a vortex-shaped electromotive force is generated in the direction of rotation opposite to C1, as indicated by C2, according to the so-called right-handed screw rule. A linear electromotive force C3 is generated in the thickness direction of the flow pipe 1 when passing through the pair of magnets 21A, 21A facing each other.
Further, when the electrolytic solution A advances and passes through the next pair of magnets 21B, 21B facing each other with the flow tube 1 interposed therebetween, the pair of magnets 21B, 21B moves from the previous pair of magnets 21A, 21B Since the direction of electrolysis is opposite to that of 21A, an electromotive force is generated in the direction of rotation C2 when approaching and C1 when moving away.

Next, examples according to the first embodiment and comparative examples will be described.
(Example 1)
As the flow pipe 1, a flexible tube for water supply (manufactured by Livilac Co., Ltd., product number: RFL10) with a nominal diameter of 13 (outer diameter φ 16 mm) made of SUS304 was flattened to a width of 19.8 mm (inner diameter D1 in the width direction = 19.8 mm). 2 mm), thickness 8.3 mm (inner diameter D2 in the thickness direction = 7.7 mm), flatness ratio (D2/D1) = 0.4, and total length 620 mm, as shown in FIGS. A sheet folded in two was used. The inflow pipe 1 was connected to the water pipe with a cap nut, a joint and a vinyl hose. In the magnetic circuit 2, a 570 mT neodymium magnet was used as the magnet 21, and a magnetized iron core was used as the yoke. Eight magnetic circuits 2 were arranged along the longitudinal direction at a pitch of 40 mm, with the magnets 21 facing each other in the width direction of the flow tube 1 (see FIG. 4(b)). The flow pipe 1 and the magnetic circuits 2, 2, . . . The microbubble generating device 100 thus prepared was taken as Example 1.

(heating test)
Using the microbubble generator 100 according to Example 1, tap water sampled in January 2021 at the address of the inventor as electrolyte A is fed from the inlet 41 of the flow pipe 1 at a water pressure of 0.3 MPa. The following heating test was performed on the treated water B (sample) that flowed into the pipe 1 and flowed out from the outlet 42 .

As shown in FIG. 4, the treated water B (sample) flowing out from the outflow port 42 was placed in a pot having an iron pot body (200 mm in diameter and 68 mm in depth) with a glass lid (424 g in mass) and salad oil. An oil film was formed by drawing a thin film, and an iron lid (jam jar lid) with a diameter of 62 mm and a depth of 13 mm was laid inside the pot, and 20 ml of water flowing out from the outlet 42 was poured into the iron lid. . The salad oil was used to prevent the generated gas from leaking out of the iron lid before reaching the ignition point. In this state, the pot was put on the stove and heated, and an explosion occurred 47 seconds after the start of heating, and the glass lid jumped up about 8 cm.

(Comparative example 1)
Tap water was supplied to the inlet 41 of the inflow pipe 1 in the same manner as in Example 1, except that the magnets 21 were arranged to face each other in the thickness direction of the inflow pipe 1 as shown in Fig. 4(b). was poured in, and the treated water (sample) flowing out from the outlet 42 was subjected to a heating test. Even after 1 minute and 30 seconds from the start of heating, no explosion occurred.

(Comparative example 2)
In the same manner as in Example 1, except that the same flexible tube for water supply as used in Example 1 was not crushed flat and was used as it was with a circular cross section (see FIG. 4(b)). Tap water was poured into the inflow port 41 of the pipe 1, and the treated water (sample) flowing out from the outflow port 42 was subjected to a heating test. No explosion occurred even after 1 minute and 30 seconds from the start of heating.

(Discussion on heating test)
From the results of the heating test using the microbubble generator 100 of Example 1, by using a flat tube as the flow tube 1 and arranging the magnets so as to face each other in the width direction of the flat tube, the flow tube 1 Microbubbles composed of hydrogen and oxygen were generated in flowing water. Further, from the results of Comparative Examples 1 and 2, even if a flat tube is used as the flow pipe 1, when the magnets are opposed in the thickness direction, or when a circular pipe is used as the flow pipe 1, hydrogen It was found that microbubbles composed of oxygen and oxygen were not generated. Since the flatness ratio (D2/D1) of the flow tube 1 in Example 1 is 0.4, the flatness ratio D2/D1 is preferably 0.6 or less, and particularly preferably 0.45 or less. Do you get it.

(UFB measurement test 1)
(Example 1)
Collected at the same time as the tap water used in the heating test according to Example 1 above, the tap water filtered using a 0.1 μm filtration filter (manufactured by Organo Co., Ltd., trade name Micropore, product number 1BC-1SE) was used as an example. Treated water for UFB measurement was obtained through the flow tube 1 of the microbubble generator 100 of No. 1.

(Test example 1)
The tap water was sampled at the same time as the tap water according to Example 1, and was used as the treated water for UFB measurement according to Test Example 1, after being filtered through a 0.1 μm filtration filter.

Regarding the UFB contained in the treated water for UFB measurement according to Example 1 and Test Example 1, we asked Toslek Co., Ltd. to measure UFB having an average particle size and a particle size of less than 1 μm with NanoSight NS300 manufactured by Spectris Co., Ltd. and that of UFB with a particle size of 90 nm to 110 nm. Measurements were taken on January 19, 2021. Table 1 shows the results. In addition, ± in Table 1 and Table 2 is a standard error.

(Measurement of magnetic flux density)
In addition, the magnetic flux density inside the flow tube 1 of the microbubble generator 100 according to Example 1 was measured at the positions shown in FIG. Table 1 shows the results.

(Discussion on UFB measurement test 1)
As shown in Table 1, both the UFB concentration and the UFB concentration limited to a particle size of 90 to 110 nm are significantly higher in Example 1 than in Test Example 1. It was found that UFB was generated by the microbubble generator 100 of Example 1.

(UFB measurement test 2)
In June 2021, treated water obtained in the following manner from tap water collected at the same address as the tap water used in the above heating test and UFB measurement test 1 was treated in the same manner as in UFB measurement test 1, the average particle size and the concentration of UFB with a particle size of less than 1 μm and the concentration of UFB with a particle size of 90 nm to 110 nm. Comparative Example 2 and Example 3 were measured on June 10, 2021, and Comparative Example 3 and Example 2 were additionally measured on June 15 and 21, 2021, respectively. .

(Comparative example 2)
Tap water sampled in June 2021 is passed through the same 0.1 μm filtration filter as in UFB measurement test 1, and the flatness ratio (D2/D1) is set to 1.0 without flattening it. The treated water for UFB measurement 2 according to Comparative Example 2 was obtained by flowing it through the flow pipe 1 of the apparatus.

(Comparative Example 3)
A device of Comparative Example 3 was formed in the same manner as in Example 1 except that the flatness ratio (D2/D1) of the flow tube 1 was set to 0.2. The tap water sampled several days after the tap water according to Comparative Example 2 was passed through the same 0.1 μm filtration filter as in UFB measurement test 1, and then flowed into the flow pipe 1 of the apparatus of Comparative Example 3, Treated water for UFB measurement 2 according to Comparative Example 3 was obtained.

(Example 2)
Example 2 is a microbubble generator 100 formed in the same manner as in Example 1, except that the flatness ratio (D2/D1) of the flow tube 1 is set to 0.3. The tap water sampled several days after the tap water according to Comparative Example 3 was passed through the same 0.1 μm filtration filter as in UFB measurement test 1, and this was passed through the flow pipe 1 of the microbubble generator 100 of Example 2. Then, the treated water for UFB measurement 2 according to Example 2 was obtained.

(Example 3)
Example 3 is a microbubble generator 100 formed in the same manner as in Example 1, except that the flatness ratio (D2/D1) of the flow tube 1 is set to 0.6. The tap water sampled at the same time as the tap water according to Comparative Example 2 was passed through the same 0.1 μm filtration filter as in UFB measurement test 1, and then flowed into the flow tube 1 of the microbubble generator 100 of Example 3. Thus, treated water for UFB measurement 2 according to Example 3 was obtained.

(Measurement of magnetic flux density 2)
In addition, the magnetic flux densities inside the flow pipes 1 according to Examples 2 and 3 and Comparative Examples 2 and 3 were shown in FIG. measured in position. Table 2 shows the results.

Table 2 shows the results of UFB measurement test 2 and magnetic flux density measurement 2.

(Discussion on UFB measurement test 2)
From the results in Table 2, the treated water obtained in Comparative Example 3 in which the flatness ratio (D2/D1) of the inflow pipe 1 was 0.2 was the comparative example in which the flatness ratio of the inflow pipe 1 was 1.0. The UFB concentration was lower than that of the treated water obtained by 2. From the results of the heating test described above, it is considered that UFB does not occur in the device of Comparative Example 2, and therefore it is considered that UFB does not occur in the device of Comparative Example 3 as well.

On the other hand, the treated water obtained by the microbubble generator 100 according to Examples 2 and 3 has a UFB concentration limited to a particle size of 90 to 110 nm compared to Comparative Examples 2 and 3. The concentration was significantly increased, and it was found that UFB was generated by the microbubble generators 100 of Examples 2 and 3. Combining the results of UFB measurement tests 1 and 2, in the microbubble generator 100, it is important that the flatness ratio (D2/D1) of the flow tube 1 is 0.3 or more and 0.6 or less. Do you get it.

(Consideration of the magnetic flux density in the flow tube 1)
As for the magnetic flux density in the flow tube 1, from the measurement results of the magnetic flux density in the flow tube 1 according to Examples 1 to 3 shown in Tables 1 and 2, it was found that the flatness ratio of the flow tube 1 was 0.5. If it is 3 or more and 06 or less, it is considered that UFB can be generated in the flow pipe 1 by setting the entire inside of the flow pipe 1 to 99 mT or more. Further, it is considered that UFB can be generated in the flow pipe more reliably if the entire flow pipe has a tension of 127 mT or more.

(Usage example 1)
FIG. 5 shows an example in which the microbubble generator 100 is connected to the water heater 4 to supply water containing microbubbles to the hot water supply line. In the illustrated example, the microbubble generator 100 is arranged on the secondary side (downstream) pipe 52, but the microbubble generator 100 can also be arranged on one side (upstream). The installation space can be saved by incorporating the microbubble generator 100 in the water heater 4. - 特許庁
Since the microbubble generator 100 can process a sufficient amount of water only by the water pressure from the water heater 4, it is possible to easily obtain warm microbubble-generated water simply by attaching it to the secondary side pipe 52 of the water heater 4. be able to.

(Usage example 2)
FIG. 6 shows a case where the microbubble generator 100 is incorporated in the high pressure washer 6. As shown in FIG. Tap water is made to flow into the high-pressure washer 6, micro-bubbles are formed in the tap water by the micro-bubble generator 100, and then the water is pressurized by a compressor to be sprayed as high-pressure water. Since the microbubble generator 100 has a small resistance inside the flow pipe 1, it is not necessary to arrange many flow pipes 1 in parallel, and the size of the device can be reduced.
When cleaning oil stains on a grease filter in a kitchen with high-pressure water, it is necessary to immerse it in caustic soda for several hours to decompose the oil and then wash it with water with a high-pressure washer. It is a dangerous and powerful drug, and there is a problem that it must be neutralized with acid when it is discharged into the drain.
By incorporating the microbubble generator 100 of the present invention into the high pressure washer 6, water containing microbubbles released from the high pressure washer 6 is sprayed onto the dirty grease filter, left for several minutes, and then high pressure washed again. Since oil stains can be washed away with , the cleaning time can be greatly shortened, and the water containing microbubbles used for cleaning can be drained as it is.

(Usage example 3)
FIG. 7 shows an example in which the microbubble generator 100 is combined with the watering hose 7. As shown in FIG. By doing so, the microbubble-containing water can be sprinkled on fresh flowers, plants, home gardens, and the like. Plant growth can be promoted by providing microbubbles containing oxygen to plants. Since the microbubble generator 100 has a small resistance of the flow pipe 1, even if it is incorporated in the water hose 7 in this way, the water discharge pressure of the water hose 7 can be secured sufficiently.

(Usage example 4)
FIG. 8 shows an example in which the microbubble generator 100 is incorporated into the manufacturing process of soft drinks. Microbubbles of oxygen and hydrogen generated by the microbubble generator 100 are harmless to the human body and can be used for soft drinks. After the spring water A or the like is filtered by the filtration filters 8, .
When soft drinks containing microbubbles are filled in glass bottles, aluminum cans, or aluminum bags, the microbubbles are less likely to escape from the container, so they can be sufficiently distributed as a product.
In addition, when the present inventor and his mother drank tap water directly and when they drank water containing microbubbles formed from tap water through the microbubble generator 100 according to the present invention, the surface temperature of their hands was As a result of the measurement, when the tap water was drunk directly, the surface temperature of the hands decreased and the blood vessels constricted. considered to have been expanded.

As described above, the microbubble generator of the present invention is not limited to the above-described embodiments, and for example, a plurality of pairs of magnets may be provided, and one pair may be provided. The inflow pipe may not be folded in two, but may be a single straight pipe, may be folded in three or more, or a plurality of pipes may be arranged in parallel.

100 microbubble generator A electrolyte 1 flow tube 21 magnet 22 yoke

TECHNICAL FIELD The present invention relates to a technique for amplifying microbubbles called microbubbles or ultrafine bubbles in a liquid, and more particularly to a technique for amplifying microbubbles by electrolyzing an electrolytic solution.

BACKGROUND ART Conventionally, a method of generating microbubbles composed of hydrogen and oxygen in water by electrolyzing water is known (see Patent Documents 1 to 3).
For example, Patent Document 1 proposes a microbubble generator that electrolyzes water using titanium as an anode and platinum as a cathode. A microbubble generator has been proposed.

In the microbubble generators of Patent Documents 1 and 2, there is a problem that an oxide film is formed on the surface of the anode. We have proposed a microbubble generator that is filled with charcoal chips and suppresses the formation of an oxide film on the electrode by the reducing power of the charcoal chips.

However, the microbubble generating device of Patent Document 3 has a problem that it is inconvenient to carry because the device becomes large due to the battery, and a problem that it cannot be used when the battery runs out. , in Patent Document 4, a water flow passage is filled with Bincho charcoal chips or stainless steel balls, and a magnetic field is applied in a direction intersecting the flowing water to generate a vortex electromotive force in the flowing water. We have proposed a microbubble generator that electrolyzes water on the surface of Binchotan charcoal or stainless steel balls by electromotive force.

WO2014/148397 JP 2018-020313 A JP 2020-151640 A Japanese Patent Application No. 2020-073784

However, in the microbubble generator according to Patent Document 4, since a sufficient amount of water cannot be secured due to the resistance of the binchotan charcoal chips and stainless steel balls filled in the flow channel, the flow channel has to be arranged in parallel, resulting in an increase in the size of the device. In addition, rust and impurities in the piping clog gaps between chips and the like, causing problems such as a decrease in the amount of water and a problem of deterioration in water quality with use.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a microbubble amplifying device capable of ensuring a sufficient flow rate of the electrolytic solution to be processed and suppressing quality deterioration of the formed microbubble-containing liquid. do.

The invention made to solve the above problems is a microbubble amplifying device for amplifying microbubbles in an electrolytic solution, comprising: a metal flow pipe for flowing the electrolytic solution; At least a pair of magnets are provided so that the N pole and the S pole are opposed to each other, and the flow tube has a flat shape in which the inner diameter D1 in the width direction in the cross section perpendicular to the axis is larger than the inner diameter D2 in the thickness direction perpendicular to the width direction. None, the pair of magnets are provided so as to face each other in the width direction, and the ratio (D2/D1) of the inner diameter D2 in the thickness direction to the inner diameter D1 in the width direction is 0.3 or more and 0.6 or less. , wherein the entire inside of the flow tube is formed to 99 mT or more by the magnet.
Here, the "electrolyte" means a liquid that is electrolyzed by applying an electric current to amplify bubbles.

In this way, the flatness ratio (D2/D1) of the cross section perpendicular to the axis of the metal flow tube is set to 0.3 or more and 0.6 or less, and the pair of magnets are opposed in the width direction (major axis direction). By forming a magnetic flux density of 99 mT or more in at least a part of the flow pipe and flowing the electrolytic solution into the flow pipe, sufficient An electromotive force is generated, the electrolytic solution is electrolyzed by this electromotive force, and microbubbles in the flow tube can be amplified .
In addition, since the flow pipe is not filled with conductive chips, a sufficient flow rate of the electrolytic solution can be ensured, and clogging of the flow pipe with rust and impurities can be suppressed.

It is preferable that a plurality of pairs of the magnets are arranged along the longitudinal direction of the flow tube while alternately interchanging the N poles and the S poles. By doing so, it is possible to change the magnetic field more greatly in the direction in which the electrolytic solution flows, so that a larger electromotive force is generated in the flow tube, and the microbubbles can be efficiently amplified .

Preferably, the longitudinally adjacent magnets are connected by a yoke. By doing so, the magnetic field can be strengthened and the microbubbles can be amplified more efficiently.

It is preferable that a plurality of the flow pipes be folded back and pass through between the pair of magnets. By doing so, the microbubbles in the electrolytic solution can be repeatedly amplified , so that more microbubbles can be amplified .

It is preferable that at least one of the inner surfaces of the flow pipe, which face each other in the thickness direction, is formed in a chevron shape or a wavy shape. By doing so, the contact area between the inner surface and the electrolytic solution can be increased, so that the microbubbles can be amplified more efficiently.

As described above, according to the microbubble amplifying device of the present invention, since microbubbles can be amplified without filling the inside of the flow tube with a conductive chip, it is possible to ensure a sufficient flow rate of the electrolyte passing through the flow tube. In addition, it is possible to suppress quality deterioration of the electrolytic solution due to clogging of the conductive chip with dust and impurities.

BRIEF DESCRIPTION OF THE DRAWINGS It is the (a) front view and (b) top view which showed typically the microbubble amplifying apparatus which concerns on 1st Embodiment of this invention. 1. It is explanatory drawing of the principle which an electromotive force generate|occur|produces in the microbubble amplifying apparatus shown in FIG. It is an enlarged view of the XX section in FIG. 1(a). FIG. 2 is an explanatory diagram of a heating test according to Example 1 and Comparative Examples 1 and 2; BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the usage example 1 of the microbubble amplifying apparatus of this invention. It is a schematic diagram which shows the usage example 2 of the microbubble amplifying apparatus of this invention. FIG. 3 is a schematic diagram showing Example 3 of use of the microbubble amplifying device of the present invention. FIG. 4 is a schematic diagram showing Example 4 of use of the microbubble amplifying device of the present invention. FIG. 3 is a schematic cross-sectional view showing another example of a flow tube, in which (a) to (f) are cross sections perpendicular to the axis of the flow tube, and (g) is parallel to the axis of the flow tube and has a thickness. It shows a cross-section cut in the direction. FIG. 4 is an explanatory diagram showing measurement points of magnetic flux density in a flow pipe;

Embodiments of the present invention will be described below. However, the present invention is not limited to the following embodiments.
FIG. 1 shows a microbubble amplification device 100 according to one embodiment of the invention. The microbubble amplifying device 100 amplifies microbubbles in the electrolytic solution A by electrolyzing the electrolytic solution A. FIG. A microbubble amplifying device 100 mainly includes a metal flow pipe 1 for feeding an electrolytic solution A, and a plurality of pairs of magnetic circuits 2, 2, . . .

Electrolyte A may be tap water, mineral water, or the like, which is electrolyzed to generate hydrogen and oxygen when an electric current is applied, or salt water, which is electrolyzed to generate hydrogen and chlorine. Therefore, substances other than hydrogen and oxygen that generate microbubbles may be used.

The inflow pipe 1 is made of a metal pipe, and as shown in FIG. ) has a flat shape larger than the inner diameter D2. The flatness ratio (D2/D1), which is the ratio of the inner diameter D2 in the thickness direction to the inner diameter D1 in the width direction, is set to 0.3 or more and 0.6 or less. When D2/D1 is less than 0.3 or exceeds 0.6, there is a possibility that microbubbles cannot be sufficiently amplified .

As shown in FIG. 1(a), the flow pipe 1 is a single flat pipe folded in two in the thickness direction, and two flow pipes consisting of an outward pipe 11 and a return pipe 12 are overlapped in the thickness direction. It is set up like this. Both ends of the flow tube 1 are connected to the upstream side tube and the downstream side tube outside the microbubble amplifying device 100 by pipe joints 3 such as cap nuts. The inflow tube 1 may be folded so as to overlap three or more.

Further, in the present embodiment, as shown in FIG. 3, the flow tube 1 has surfaces 1a, 1a facing in the thickness direction formed of flat surfaces parallel to each other, and surfaces 1b, 1b facing in the width direction being curved surfaces. The cross section of the flow pipe 1 is substantially track-shaped, and as shown in the flow pipe 1A in FIG. may be rectangular, or the inner surfaces of the surfaces 1a and 1a facing in the thickness direction may be formed in a chevron shape or a wave shape, as in the flow pipes 1B to 1G in FIGS. The contact area with the electrolyzed water can be increased by making each example as shown in FIG.
Specifically, FIG. 9(b) shows an example in which the surfaces 1a, 1a facing each other in the longitudinal direction are formed in a mountain shape that curves to the same side (upper side in the figure). The surfaces 1a, 1a opposed in the longitudinal direction are corrugated examples in which ridges and ridges and troughs are aligned. An example of forming a mountain shape that curves outward in the thickness direction, FIG. The flow pipe 1F of (f) is an example in which the inner surfaces of the surfaces 1a, 1a facing each other in the thickness direction are formed with corrugations having a triangular cross-section, and the flow pipe 1G of FIG. It shows an example in which corrugations with a triangular cross-section line up in the longitudinal direction. The example shown in the figure is formed by flattening a circular tube with a female thread formed on the inner surface, and the corrugations are connected in a spiral shape. However, the corrugations may be arranged concentrically in the longitudinal direction of the flow tube 1G.
It should be noted that the chevron or wavy shape may be formed only on one of the inner surfaces facing each other in the thickness direction, or may be formed on a part of the flow pipe in the longitudinal direction.

As the material of the flow tube 1, iron, stainless steel, brass, and other metals can be appropriately used, but austenitic stainless steel such as SUS304, which is difficult to oxidize, is preferable.
3 indicates that the electrolyte A flows in the depth direction, and the symbol with a dot in the circle indicates that the electrolyte A flows toward the front side of the paper.

The magnetic circuit 2 includes two pairs (four pieces) of magnets 21, 21, 21, 21 arranged in the longitudinal direction of the flow tube 1 (horizontal direction in FIG. 1(b)). A pair of iron yokes 22, 22 connecting two magnets 21, 21 arranged on the same side of the tube 1 is provided. The two pairs of magnets 2121, . As shown in FIG. 3, each pair of magnets 21, 21 is arranged so as to face both the forward pipe 11 and the return pipe 12 of the flow pipe 1 in the width direction thereof. In addition, the code|symbol 9 in a figure has shown the casing.

It is important that the magnetic force generated in the flow tube 1 by the magnetic circuit 2 is 99 mT or more as a whole, and preferably 127 mT or more as a whole. By doing so, the microbubbles in the flow tube can be sufficiently amplified .

When using the microbubble amplifying device 100, as shown in FIG. Remove liquid B.
As shown in FIG. 2, when the electrolytic solution A that has flowed into the flow pipe 1 approaches the pair of magnets 21A, 21A facing each other with the flow pipe 1 interposed therebetween, the magnetic force applied to the electrolytic solution A gradually increases. In order to weaken this magnetic force according to the so-called right-handed screw rule, a magnetic field opposite to the magnetic field formed by the pair of magnets 21, 21 is formed to form a magnetic field indicated by symbol C1. A vortex-type electromotive force is generated in such a direction of rotation. When the electrolytic solution A moves away from the pair of magnets 21, 21, the magnetic force gradually weakens (the magnetic flux density decreases). In order to form a magnetic field, a vortex-shaped electromotive force is generated in the direction of rotation opposite to C1, as indicated by C2, according to the so-called right-handed screw rule. A linear electromotive force C3 is generated in the thickness direction of the flow pipe 1 when passing through the pair of magnets 21A, 21A facing each other.
Further, when the electrolytic solution A advances and passes through the next pair of magnets 21B, 21B facing each other with the flow tube 1 interposed therebetween, the pair of magnets 21B, 21B moves from the previous pair of magnets 21A, 21B Since the direction of electrolysis is opposite to that of 21A, an electromotive force is generated in the direction of rotation C2 when approaching and C1 when moving away.

Next, examples according to the first embodiment and comparative examples will be described.
(Example 1)
As the flow pipe 1, a flexible tube for water supply (manufactured by Livilac Co., Ltd., product number: RFL10) with a nominal diameter of 13 (outer diameter φ 16 mm) made of SUS304 was flattened to a width of 19.8 mm (inner diameter D1 in the width direction = 19.8 mm). 2 mm), thickness 8.3 mm (inner diameter D2 in the thickness direction = 7.7 mm), flatness ratio (D2/D1) = 0.4, and total length 620 mm, as shown in FIGS. A sheet folded in two was used. The inflow pipe 1 was connected to the water pipe with a cap nut, a joint and a vinyl hose. In the magnetic circuit 2, a 570 mT neodymium magnet was used as the magnet 21, and a magnetized iron core was used as the yoke. Eight magnetic circuits 2 were arranged along the longitudinal direction at a pitch of 40 mm, with the magnets 21 facing each other in the width direction of the flow tube 1 (see FIG. 4(b)). The flow pipe 1 and the magnetic circuits 2, 2, . . . The microbubble amplifying device 100 produced in this way was taken as Example 1. FIG.

(heating test)
Using the microbubble amplifying device 100 according to Example 1, tap water sampled in January 2021 at the address of the inventor as the electrolyte A was fed from the inlet 41 of the flow pipe 1 at a water pressure of 0.3 MPa. The following heating test was performed on the treated water B (sample) that flowed into the pipe 1 and flowed out from the outlet 42 .

As shown in FIG. 4, the treated water B (sample) flowing out from the outflow port 42 was placed in a pot having an iron pot body (200 mm in diameter and 68 mm in depth) with a glass lid (424 g in mass) and salad oil. An oil film was formed by drawing a thin film, and an iron lid (jam jar lid) with a diameter of 62 mm and a depth of 13 mm was laid inside the pot, and 20 ml of water flowing out from the outlet 42 was poured into the iron lid. . The salad oil was used to prevent the amplified gas from leaking out of the iron lid before reaching the ignition point. In this state, the pot was put on the stove and heated, and an explosion occurred 47 seconds after the start of heating, and the glass lid jumped up about 8 cm.

(Comparative example 1)
Tap water was supplied to the inlet 41 of the inflow pipe 1 in the same manner as in Example 1, except that the magnets 21 were arranged to face each other in the thickness direction of the inflow pipe 1 as shown in Fig. 4(b). was poured in, and the treated water (sample) flowing out from the outlet 42 was subjected to a heating test. Even after 1 minute and 30 seconds from the start of heating, no explosion occurred.

(Comparative example 2)
In the same manner as in Example 1, except that the same flexible tube for water supply as used in Example 1 was not crushed flat and was used as it was with a circular cross section (see FIG. 4(b)). Tap water was poured into the inflow port 41 of the pipe 1, and the treated water (sample) flowing out from the outflow port 42 was subjected to a heating test. No explosion occurred even after 1 minute and 30 seconds from the start of heating.

(Discussion on heating test)
From the results of the heating test using the microbubble amplifying device 100 of Example 1, by using a flat tube as the flow tube 1 and arranging the magnets so as to face each other in the width direction of the flat tube, the flow tube 1 Microbubbles composed of hydrogen and oxygen were amplified in flowing water. Further, from the results of Comparative Examples 1 and 2, even if a flat tube is used as the flow pipe 1, when the magnets are opposed in the thickness direction, or when a circular pipe is used as the flow pipe 1, hydrogen It was found that the microbubbles composed of and oxygen did not amplify . Since the flatness ratio (D2/D1) of the flow tube 1 in Example 1 is 0.4, the flatness ratio D2/D1 is preferably 0.6 or less, and particularly preferably 0.45 or less. Do you get it.

(UFB measurement test 1)
(Example 1)
Collected at the same time as the tap water used in the heating test according to Example 1 above, the tap water filtered using a 0.1 μm filtration filter (manufactured by Organo Co., Ltd., trade name Micropore, product number 1BC-1SE) was used as an example. Treated water for UFB measurement was obtained through the flow tube 1 of the microbubble amplifying device 100 of No. 1.

(Test example 1)
The tap water was sampled at the same time as the tap water according to Example 1, and was used as the treated water for UFB measurement according to Test Example 1, after being filtered through a 0.1 μm filtration filter.

Regarding the UFB contained in the treated water for UFB measurement according to Example 1 and Test Example 1, we asked Toslek Co., Ltd. to measure UFB with an average particle size and a particle size of less than 1 μm with NanoSight NS300 manufactured by Spectris Co., Ltd. and that of UFB with a particle size of 90 nm to 110 nm. Measurements were taken on January 19, 2021. Table 1 shows the results.
In addition, ± in Table 1 and Table 2 is a standard error.

(Measurement of magnetic flux density)
In addition, the magnetic flux density inside the flow tube 1 of the microbubble amplifying device 100 according to Example 1 was measured at the positions shown in FIG. Table 1 shows the results.

(Discussion on UFB measurement test 1)
As shown in Table 1, both the UFB concentration and the UFB concentration limited to the particle size of 90 to 110 nm are significantly higher in Example 1 than in Test Example 1. It was found that the UFB was amplified by the microbubble amplifying device 100 of Example 1.

(UFB measurement test 2)
In June 2021, treated water obtained in the following manner from tap water collected at the same address as the tap water used in the above heating test and UFB measurement test 1 was treated in the same manner as in UFB measurement test 1, the average particle size and the concentration of UFB with a particle size of less than 1 μm and the concentration of UFB with a particle size of 90 nm to 110 nm. Comparative Example 2 and Example 3 were measured on June 10, 2021, and Comparative Example 3 and Example 2 were additionally measured on June 15 and 21, 2021, respectively. .

(Comparative example 2)
Tap water sampled in June 2021 is passed through the same 0.1 μm filtration filter as in UFB measurement test 1, and the flatness ratio (D2/D1) is set to 1.0 without flattening it. The treated water for UFB measurement 2 according to Comparative Example 2 was obtained by flowing the water into the flow pipe 1 of the apparatus.

(Comparative Example 3)
A device of Comparative Example 3 was formed in the same manner as in Example 1 except that the flatness ratio (D2/D1) of the flow tube 1 was set to 0.2. The tap water sampled several days after the tap water according to Comparative Example 2 was passed through the same 0.1 μm filtration filter as in UFB measurement test 1, and then flowed into the flow pipe 1 of the device of Comparative Example 3, Treated water for UFB measurement 2 according to Comparative Example 3 was obtained.

(Example 2)
Example 2 is a microbubble amplifying device 100 formed in the same manner as in Example 1, except that the flatness ratio (D2/D1) of the flow tube 1 is set to 0.3. The tap water sampled several days after the tap water according to Comparative Example 3 was passed through the same 0.1 μm filtration filter as in UFB measurement test 1, and this was passed through the flow pipe 1 of the microbubble amplifying device 100 of Example 2. Then, the treated water for UFB measurement 2 according to Example 2 was obtained.

(Example 3)
Example 3 is a microbubble amplifying device 100 formed in the same manner as in Example 1 except that the flatness ratio (D2/D1) of the flow tube 1 is set to 0.6. The tap water sampled at the same time as the tap water according to Comparative Example 2 was passed through the same 0.1 μm filtration filter as in UFB measurement test 1, and then flowed into the flow pipe 1 of the microbubble amplifying device 100 of Example 3. Thus, treated water for UFB measurement 2 according to Example 3 was obtained.

(Measurement of magnetic flux density 2)
In addition, the magnetic flux densities inside the flow pipes 1 according to Examples 2 and 3 and Comparative Examples 2 and 3 were shown in FIG. measured in position. Table 2 shows the results.

Table 2 shows the results of UFB measurement test 2 and magnetic flux density measurement 2.

(Discussion on UFB measurement test 2)
From the results in Table 2, the treated water obtained in Comparative Example 3 in which the flatness ratio (D2/D1) of the inflow pipe 1 was 0.2 was the comparative example in which the flatness ratio of the inflow pipe 1 was 1.0. The UFB concentration was lower than that of the treated water obtained by 2. From the results of the heating test described above, it is considered that the UFB is not amplified in the device of Comparative Example 2, and therefore the UFB is not amplified in the device of Comparative Example 3 as well.

On the other hand, the treated water obtained by the microbubble amplifying device 100 according to Examples 2 and 3 has a UFB concentration limited to a particle size of 90 to 110 nm compared to Comparative Examples 2 and 3. The concentration was significantly increased, and it was found that the UFB was amplified by the microbubble amplifying device 100 of Example 2 and Example 3. Combining the results of UFB measurement tests 1 and 2, in the microbubble amplifying device 100, it is important that the flatness ratio (D2/D1) of the flow tube 1 is 0.3 or more and 0.6 or less. Do you get it.

(Consideration of the magnetic flux density in the flow tube 1)
As for the magnetic flux density in the flow tube 1, from the measurement results of the magnetic flux density in the flow tube 1 according to Examples 1 to 3 shown in Tables 1 and 2, it was found that the flatness ratio of the flow tube 1 was 0.5. If it is 3 or more and 06 or less, it is considered that the UFB can be amplified in the flow tube 1 by setting the entire inside of the flow tube 1 to 99 mT or more. In addition, it is considered that the UFB in the flow tube can be amplified more reliably if the entire flow tube is 127 mT or more.

(Usage example 1)
FIG. 5 shows an example in which microbubble amplifying device 100 is connected to water heater 4 to supply water containing microbubbles to a hot water supply line. In the illustrated example, the microbubble amplifying device 100 is arranged on the secondary side (downstream) pipe 52, but the microbubble amplifying device 100 can also be arranged on one side (upstream). The microbubble amplifying device 100 can be incorporated in the water heater 4 to save installation space.
Since the microbubble amplifying device 100 can process a sufficient amount of water only by the water pressure from the water heater 4, it is possible to easily obtain warm microbubble amplified water simply by attaching it to the secondary side pipe 52 of the water heater 4 in this way. be able to.

(Usage example 2)
FIG. 6 shows a case where the microbubble amplifying device 100 is incorporated in the high pressure washer 6. As shown in FIG. Tap water is made to flow into the high-pressure washer 6, micro-bubbles are formed in the tap water by the micro-bubble amplifying device 100, and then the water is pressurized by a compressor to be sprayed as high-pressure water. Since the resistance inside the flow tube 1 is small, the microbubble amplifying device 100 can be built in the high pressure washer 6 because it is not necessary to arrange many flow pipes 1 in parallel and the device can be made compact.
When cleaning oil stains on a grease filter in a kitchen with high-pressure water, it is necessary to immerse it in caustic soda for several hours to decompose the oil and then wash it with water with a high-pressure washer. It is a dangerous and powerful drug, and there is a problem that it must be neutralized with acid when it is discharged into the drain.
By incorporating the microbubble amplifying device 100 of the present invention into the high pressure washer 6, the dirty grease filter is sprayed with water containing microbubbles released from the high pressure washer 6, left for several minutes, and then high pressure washed again. Since oil stains can be washed away with , the cleaning time can be greatly shortened, and the water containing microbubbles used for cleaning can be drained as it is.

(Usage example 3)
FIG. 7 shows an example in which the microbubble amplifying device 100 is combined with the watering hose 7 . By doing so, the microbubble-containing water can be sprinkled on fresh flowers, plants, home gardens, and the like. Plant growth can be promoted by providing microbubbles containing oxygen to plants. Since the resistance of the flow pipe 1 is small, the microbubble amplifying device 100 can sufficiently secure the water discharge pressure of the water hose 7 even if it is incorporated in the water hose 7 in this way.

(Usage example 4)
FIG. 8 shows an example in which the microbubble amplifying device 100 is incorporated into a soft drink manufacturing process. The microbubbles of oxygen and hydrogen amplified by the microbubble amplifying device 100 are harmless to the human body and can be used for soft drinks. After the spring water A or the like is filtered by the filtration filters 8, .
When soft drinks containing microbubbles are filled in glass bottles, aluminum cans, or aluminum bags, the microbubbles are less likely to escape from the container, so they can be sufficiently distributed as a product. In addition, when the present inventor and his mother drank tap water directly and when they drank microbubble-containing water formed by passing tap water through the microbubble amplifying device 100 according to the present invention, the surface temperature of their hands was As a result of the measurement, when the tap water was drunk directly, the surface temperature of the hands decreased and the blood vessels constricted. considered to have been expanded.

As described above, the microbubble amplifying device of the present invention is not limited to the above-described embodiments. For example, a plurality of pairs of magnets need not be provided, and one pair may be provided. The inflow pipe may not be folded in two, but may be a single straight pipe, may be folded in three or more, or a plurality of pipes may be arranged in parallel.

100 microbubble amplifier A electrolyte 1 flow tube 21 magnet 22 yoke

Claims (5)

A microbubble generator for generating microbubbles in an electrolytic solution,
a metal flow pipe for flowing the electrolytic solution;
At least a pair of magnets provided so that the N pole and the S pole face each other across the flow pipe,
The flow pipe has a flat shape in which the inner diameter D1 in the width direction in the cross section perpendicular to the axis is larger than the inner diameter D1 in the thickness direction perpendicular to the width direction,
The pair of magnets are provided so as to face each other in the width direction,
The ratio (D2/D1) of the inner diameter D2 in the thickness direction to the inner diameter D1 in the width direction is 0.3 or more and 0.6 or less,
The micro-bubble generator, wherein the entire inside of the flow pipe is formed to have a thickness of 99 mT or more by the magnet. 2. The microbubble generating device according to claim 1, wherein a plurality of pairs of said magnets are arranged along the longitudinal direction of said flow pipe while alternately interchanging N poles and S poles. 3. The microbubble generator according to claim 2, wherein said longitudinally adjacent magnets are connected by a yoke. 4. The microbubble generator according to any one of claims 1 to 3, wherein the flow pipe is provided so as to pass through between the pair of magnets by folding a plurality of pipes. 5. The microbubble generator according to any one of claims 1 to 4, wherein at least one inner surface of the flow pipe, which faces in the thickness direction, is formed in a chevron shape or a wavy shape.

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