KR101930936B1 - Apparatus for producing nano bubble and system having the same - Google Patents

Abstract

Disclosed a nanobubble generating device and a nanobubble generating system including the same. To this end, the nanobubble generating device comprises: a water tank capable of accommodating liquid; one or more vibrators for producing a plurality of bubble regions in which bubble is generated by providing vibration energy to liquid in at least one axis; and at least one rotating body rotatably installed in the water tank so as to generate bubbles and re-crush the generated bubbles to a smaller size; and one or more mesh screens installed in the water tank to generate bubbles and re-crush the generated bubbles to the smaller size.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a nano bubble generating device,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nano bubble generating device and a nano bubble generating system including the same.

The nano bubble refers to a bubble having a diameter of less than 1 탆, particularly a size of several tens to several hundreds of nanometers. Due to its characteristics, water containing a lot of nano bubbles has an excellent effect on cleaning and disinfection, , It can show various advantages when applied to fisheries.

Accordingly, studies on the efficacy of nano bubbles have been actively carried out in domestic and abroad, and various attempts have been made to apply them to industries in various fields. However, the commercial application is still not fully realized because the techniques and methods developed so far have not developed a method for mass production of nanobubbles in a short time.

If technologies and methods to economically mass produce nano bubbles emerge, it is expected that new developments using almost all industries will be possible.

Korean Patent Publication No. 10-2015-0139775 (published on December 14, 2015)

Embodiments of the present invention provide a nano bubble generating device capable of generating a large amount of nano bubbles in a very short period of time and a nano bubble generating system including the same.

A nano bubble generating apparatus according to an aspect of the present invention includes: a water tank capable of receiving liquid; At least one vibrator for generating a plurality of bubble zones in which bubble is generated by providing vibration energy to the liquid in at least one axis; And at least one rotating body rotatably installed in the water tub to generate bubbles while generating bubbles while rotating while generating vibrations with vibrational energy and re-crushing the generated bubbles to a smaller size.

At this time, in the present invention, a bubble is generated while vibrating with the vibrational energy of the vibrator while generating the bubble while passing the liquid, and a mesh screen As shown in FIG.

Further, the present invention may further comprise a gas supply unit for supplying an external gas into the liquid inside the water tank.

Further, the vibrator may include a vibrating body for generating and transmitting vibration energy; At least one diaphragm being at least one surface of which is in contact with the liquid and is fixedly or movably mounted on the water tank; And a plurality of vibration transmitting rods connecting between the vibrating body and the vibration plate, wherein the vibration transmitting rods are spaced apart from each other between the vibrating body and the vibrating plate and the at least one vibrating plate.

The rotating body may include: a rotating shaft rotatably installed in the water tank; And may include brushes that are installed at one or more stages on the rotating shaft and have different lengths for each stage.

Further, the mesh screen includes a plurality of mesh holes, and bubbles are generated as the liquid passes through the mesh holes by the centrifugal force of the rotating body, and the bubbles generated in the water tank can be re-ground.

The gas supply unit may further comprise: a gas supply unit for supplying an external gas into the liquid; A gas supply unit installed inside the water tank so that the external gas is injected into the liquid; And a line connecting between the gas supply unit and the gas supply unit to transfer the external gas supplied from the gas supply unit to the gas supply unit.

The rotating body may guide the bubble to the bubble area so that the bubble generated by the rotating body is pulverized by the vibrational energy of the vibrator.

The fine bubble generating system according to an aspect of the present invention includes: the above-described nano bubble generating device; A nano bubble generating device and a nano bubble circulating device for circulating the bubble; A first flow path for guiding bubbles generated in the nano bubble generating device to the nano bubble circulating device; And a second flow path for guiding bubbles circulated in the nano bubble circulating device to the nano bubble generating device.

At this time, the nano bubble circulating device is a circulation tank capable of receiving liquid and capable of flowing in and out of the nano bubble generating device and the bubble; And at least one rotating body rotatably installed in the water tank so that the bubbles in the liquid introduced from the nano bubble generating device are re-pulverized and bubbles are additionally generated.

The nano bubble circulation apparatus may further include a mesh screen installed in the circulation tank so that the liquid is passed through and the bubble is re-pulverized and further bubbles are generated.

Further, the rotating body may include an upper rotating shaft and a lower rotating shaft, which are rotatably installed in the circulating tank; And a brush installed at one end of the upper rotary shaft and the lower rotary shaft.

The first flow path may be formed to penetrate a lower wall of the nano bubble generating device and a lower wall of the nano bubble circulating device to correspond to a bubble area of the nano bubble generating device, The upper wall of the apparatus and the upper wall of the nano bubble circulation apparatus.

The embodiments of the present invention have an advantage that it is possible to effectively generate fine bubbles capable of suppressing scale removal and slime generation in the piping.

Further, the embodiments of the present invention are advantageous in that the internal pressure of the water tank is maintained at a high pressure, so that the discharge of the bubbles in the liquid in the water tank to the water surface can be minimized.

Further, the embodiments of the present invention have an advantage in that the amount of generation of micro bubbles, fine bubbles, and ultra-fine bubbles (nano bubbles) can be freely adjusted by adjusting the vibration of the vibrator, the high frequency Hz and the rpm of the rotating body.

Embodiments of the present invention also provide the advantage that by providing the liquid with vibrational energy in multiple foci, it is possible to create a plurality of bubble zones in a water tank, and the generated bubbles can be crushed to a smaller size.

Further, the embodiments of the present invention have an advantage in that the flow of bubbles can be controlled in the water tank by designing the brush lengths of the brushes differently from each other.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a configuration diagram illustrating a nano bubble generating apparatus according to a first embodiment of the present invention; FIG.
2 is a configuration diagram illustrating a nano bubble generating apparatus according to a second embodiment of the present invention.
3 is a block diagram showing a nano bubble generating apparatus according to a third embodiment of the present invention.
4 is a block diagram of a rotating body of a nano bubble generating apparatus according to a fourth embodiment of the present invention.
FIG. 5 is a block diagram illustrating a nano bubble generating system including a nano bubble generating apparatus according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, configurations and operations according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE INVENTION The following description is one of many aspects of the claimed invention and the following description may form part of the detailed description of the invention. However, the detailed description of known configurations or functions in describing the present invention may be omitted for clarity.

While the invention is susceptible to various modifications and its various embodiments, it is intended to illustrate the specific embodiments and the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

And terms including ordinals such as first, second, etc. may be used to describe various elements, but the constituent elements are not limited by such terms. These terms are used only to distinguish one component from another. It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a configuration diagram illustrating a nano bubble generating apparatus according to a first embodiment of the present invention; FIG.

As shown in FIG. 1, the nano bubble generating apparatus 10 according to the first embodiment of the present invention generates a large amount of bubbles by providing vibrational energy to the liquid in multiple focuses, It is possible to generate a large amount of fine bubbles of various sizes.

In the present embodiment, a structure for generating nano bubbles has been described. However, the present invention is not limited to this. In addition to the nano bubbles, microbubbles, fine bubbles, and ultra-fine bubbles larger or smaller in diameter than the nano bubbles Of course.

The nano bubble generating apparatus 10 may include a water tank 100, a vibrator 200, and a rotating body 300.

The water tank 100 may include an enclosed inner space for accommodating the liquid. The water tank 100 may be provided in the form of a pressure vessel in which the internal space can be maintained in a state of being pressurized at a constant pressure. Thus, the water tank 100 can maintain the internal pressure at a constant pressure higher than the atmospheric pressure, so that it is possible to minimize the discharge of liquid bubbles (bubbles) into the water surface.

In this embodiment, the water bath 100 is provided in the form of a pressure vessel, but not limited thereto, and the water bath 100 may be provided in various forms such that bubbles in the liquid can be maintained in the internal space for a long time .

Particularly, in the water tub 100, microbubbles, fine bubbles, ultra-fine bubbles / nano bubbles are generated as the bubbles generated by the action of the vibrator 200, the rotating body, and the mesh screen are continuously re- It can be generated in a large amount in an accelerated manner. At this time, by adjusting the vibration of the vibrator 200, the high frequency Hz, and the rpm of the rotating body 300, the amount by which micro bubbles, fine bubbles and ultra fine bubbles / nano bubbles are generated can be adjusted.

The vibrator 200 can generate a plurality of bubble regions B in the water bath 100 by providing vibrational energy to the liquid in one or more axes. Here, the bubble region B may be defined as a region where a large amount of bubbles are generated by the vibration energy of the vibrator 200. In addition, the vibrator 200 can crush the bubble to a smaller size by providing vibration energy to the generated bubble.

For example, if the vibration energy is provided to the liquid in the water tank 100 as a single focus, the liquid is limited to one bubble area B, but if the vibration energy is provided to the liquid in the water tank 100 as a plurality of foci, The liquid may have a plurality of bubble zones (B). In the increased bubble area B, the bubble can be re-pulverized by the vibration energy of the vibrator 200 as well as the bubble generation.

For this purpose, the vibrator 200 includes a vibrating body 210 for generating and transmitting vibration energy, a vibration plate 220 in which at least one surface is disposed in the water bath 100 so as to be in contact with the liquid, And a plurality of vibration transmission rods 230 for transmitting the vibration transmission rods.

At this time, the diaphragm 220 may be a water tank itself or at least one diaphragm that can be fixedly or flowably mounted on the water tank. The plurality of vibration transmitting rods 230 may be spaced apart from each other between the vibrating body 210 and the diaphragm 220 or may be disposed apart from each other between the at least one diaphragm 220.

A fixing device 221 (for example, a packing) may be provided between the edge of the diaphragm 220 and the inner wall of the water tub 100. The fixing device keeps the watertightness of the liquid in the water tub 100 and allows the diaphragm 220 to flow (vibrate) at the inner wall of the water tub 100. [ Since the plurality of vibration transmission rods 230 are disposed apart from each other with respect to the other surface of the vibration plate 220, the bubbles can be uniformly generated corresponding to the entire area of the vibration plate 220. In other words, the plurality of vibration transmission rods 230 can be generated by dispersing a plurality of bubble regions B in the water tub 100. [

The rotating body 300 is installed in the water tub 100 so that the rotating body 300 can rotate at a high speed, so that bubbles can be generated in the water tank and the generated bubbles can be further reduced. In addition, the rotating body 300 can adjust the flow of liquid in the water tub 100 by configuring the length of the brushes differently.

The rotating body 300 may include a rotating shaft 310 rotatably installed in the water tub 100 and a plurality of brushes installed at one or more ends of the rotating shaft 310. For example, the brush may include a first brush 320 installed at one end of the rotary shaft 310 and a second brush 330 installed at the other end of the rotary shaft 310.

Since the length of the first brush 320 and the length of the second brush 330 have different lengths, the liquid in the water tank 100 can flow in one direction in the water tank 100. For example, when the length of the second brush 330 is designed to be longer than the length of the first brush 320, the centrifugal force of the second brush 330 at the time of rotating the rotary shaft 310 is higher than the centrifugal force of the first brush 320 So that the liquid can flow from the first brush 320 toward the second brush 330.

The bubbles crushed by the rotating body 300 can be guided to the bubble section B in the water tub 100 through different lengths between the first brush 320 and the second brush 330 , The bubbles guided to the bubble area B can be re-pulverized into smaller bubbles by the vibrational energy of the vibrator 200.

2 is a configuration diagram illustrating a nano bubble generating apparatus according to a second embodiment of the present invention.

2, the nano bubble generator 10 'according to the second embodiment of the present invention includes a water tank 100, a vibrator 200, a rotating body 300, and a mesh screen 500 can do.

The structure of the water tank 100, the vibrator 200 and the rotating body 300 except for the mesh screen 500 is the same as the structure of the water tank 100, the vibrator 200 and the rotating body 300 described in the first embodiment, Other embodiments will be described below, focusing on differences from the present embodiment.

The mesh screen 500 may be installed in the water tub 100 so as to surround the rotating body 300. The mesh screen 500 may include a plurality of mesh holes each having a diameter smaller than the diameter of the bubble.

Accordingly, when the mesh screen 500 surrounds the rotating body 300, the bubbles in the liquid can be moved radially outward of the rotating body 300 by rotating the rotating body 300 at a high speed. At this time, the liquid can pass through the mesh holes of the mesh screen 500 to generate small bubbles, and the liquid bubbles can be re-pulverized into small bubbles while passing through the mesh holes of the mesh screen 500.

As described above, the bubble generated by the action of the vibrator 200, the rotating body, and the mesh screen is continuously broken in the water tub 100 by the action of the vibrator, the rotating body 300 and the mesh screen 500 again , Micro bubbles, fine bubbles, ultra fine bubbles / nano bubbles can be generated in an accelerated manner.

3 is a block diagram illustrating a nano bubble generator according to a third embodiment of the present invention.

3, the nano bubble generating apparatus 10 "according to the third embodiment of the present invention includes a water tank 100, a vibrator 200, a rotating body 300, a mesh screen 500, And may include a supply unit 400.

The water tank 100, the vibrator 200, the rotating body 300, and the mesh screen 500 except for the gas supply unit 400 are the same as the water tank 100 described in the second embodiment, The vibrator 200, the rotating body 300, and the mesh screen 500, detailed description thereof will be omitted.

The gas supply unit 400 is configured such that a larger amount of external gas (including atmospheric air or special external gas) is sprayed into the inside of the water tank 100 to generate more bubbles in the vibrator 200 and the rotating body alone, (Micro bubbles, fine bubbles, ultra fine bubbles / nano bubbles) in the water tub 100 can be generated.

The gas supply unit 400 includes a gas supply unit 410 for supplying an external gas to the gas supply unit 400 and a gas supply unit 410 for supplying gas to the gas supply unit 400 in a ring shape on the inner wall of the water storage tank 100, A supply line 420 and a line 430 connecting the gas supply unit 410 and the gas supply unit 420 to transfer the external gas generated by the gas supply unit 410 to the gas supply unit 420 .

The external gas supplied to the inside of the water tub 100 through the gas supply unit 400 can be crushed by the vibrator 200 together with the bubbles generated by the vibrator 200, It may be pulverized again by the rotating body 300 and the mesh screen 500. As a result, the bubbles in the water bath 100 can be produced in a large number of bubbles through a continuous grinding process, from relatively large microbubbles to relatively small ultrafine / nano bubbles.

The present embodiment has been described with respect to the gas supply unit 400 configured by the gas supply unit 410, the gas supply unit 420 and the line 430. However, the present invention is not limited to this, It goes without saying that, for supply, the gas supply unit 400 can be changed into various structures.

4 is a block diagram of a rotating body of a nano bubble generating apparatus according to a fourth embodiment of the present invention.

As shown in FIG. 4, the rotating body 300 'according to the fourth embodiment of the present invention can provide the pulverizing effect of the bubble by the vortex.

To this end, the rotating body 300 'includes a plurality of rotating shafts 310 disposed to be spaced apart from each other in the water tub 100, a first brush 320 installed at one end of the plurality of rotating shafts 310, And a second brush 330 installed at the other end of the plurality of rotating shafts 310.

At this time, the plurality of rotating shafts 310 are rotated in different directions. For example, as shown in FIG. 4, when the central rotating shaft 310 rotates counterclockwise, the rotating sharps located on one side and the other side are respectively rotated clockwise.

When the brushes 320 and 330 provided on the rotating shafts 310 are rotated in directions different from the neighboring brushes 320 and 330, vortices are generated in the spaces between the brushes 320 and 330 And a pulverizing effect due to eddy current can be realized in a liquid bubble.

The number and arrangement of the rotating shafts 310 are varied in the water tub 100 in order to generate effective vortexes in the water tank 100. However, It goes without saying that it can be changed.

The operation of the nano bubble generator having the above-described structure will be described below.

Referring to FIG. 2, when the vibrational energy of the vibrator 200 is provided with multiple focuses on the liquid in the water tank 100, a plurality of bubble spaces B can be generated in the water tank 100. At this time, the bubbles generated in the bubble region (B) can be re-pulverized into smaller bubbles by the vibration energy of the vibrator (200).

When the rotating body 300 is rotated at a high speed in the water tub 100, the brush of the rotating body 300 can finely crush the bubbles in the liquid. At this time, the liquid bubbles can be moved toward the outer diameter side of the rotating body 300 by the high-speed rotation of the rotating body 300, and can be re-crushed into smaller bubbles while passing through the mesh holes of the mesh screen 500 .

Since the centrifugal force of the second brush 330 is greater than the centrifugal force of the first brush 320, the liquid is moved from the first brush 320 toward the second brush 330, (B). The bubbles transferred to the bubble area B can be re-pulverized into smaller bubbles by the vibration energy of the vibrator 200. [ Accordingly, microbubbles (fine bubbles, fine bubbles, ultra-fine bubbles / nano bubbles) of various sizes can be generated in the water tank 100 more.

FIG. 5 is a block diagram showing a nano bubble generating system including a nano bubble generating apparatus according to the present invention.

As shown in FIG. 5, the nano bubble generating system 1 according to the present invention can be applied to various types of micro bubbles including micro bubbles (micro bubbles, fine bubbles, Ultra fine) can be generated more.

The nano bubble generating system 1 may include a nano bubble generating device 10, a nano bubble circulating device 20, a first flow path 31 and a second flow path 32. Here, the nano bubble generator 10 is the same as the nano bubble generator 10 according to the above-described second embodiment, and a detailed description thereof will be omitted. However, the inner space of the nano bubble generator 10 may be in communication with the nano bubble circulating device 20 through the first flow path 31 and the second flow path 32.

The nano bubble circulating apparatus 20 includes a circulation tank 700 capable of receiving liquid, a rotating body 800 rotatably installed in the water tank 100, a circulation tank 700 surrounding the rotating body 800, (Not shown).

Here, the circulation tank 700 can receive the bubbles of the nano bubble generator 10 through the first flow path 31, generate bubbles in the circulation tank 700 through the second flow path 32, To the device (10). The rotating body 800 can re-pulverize the bubbles flowing into the circulation tank 700 using the rotational force and can flow the re-pulverized bubbles toward the second flow path 32.

For example, the rotating body 800 may include a rotating shaft 810 rotatably installed in the circulating bath 700 and a brush 820 provided on the rotating shaft 810. The rotary shaft 810 may include an upper rotary shaft 811 and a lower rotary shaft 812. The brush 820 may include an upper brush 821 installed at one end of the upper rotary shaft 811, And a lower brush 822 provided at the other end of the lower rotatable shaft 812. At this time, the bubble may be guided and moved in the space between the upper brush 821 and the lower brush 822. [ To this end, the lower portion of the upper brush 821 has a longer length than the upper portion, and the upper portion of the lower brush 822 has a longer length than the lower portion.

The mesh screen 500 may include a plurality of mesh holes having diameters smaller than the diameter of the bubbles. This mesh screen 500 can generate small bubbles in the liquid while passing the bubbles moving in the outer diameter direction of the rotating body 800, and can re-crush the bubbles in the liquid.

The first flow path 31 is connected to the lower wall of the nano bubble generator 10 and the lower wall of the nano bubble circulation device 20 so as to correspond to the bubble area B of the nano bubble generator 10, Path. The first flow path 31 can guide the bubbles generated in the nano bubble generating device 10 to the nano bubble circulating device 20.

The second flow path 32 may be a guide path formed through the upper wall of the nano bubble generating device 10 and the upper wall of the nano bubble circulating device 20. [ The second flow path 32 can guide the bubbles circulated in the nano bubble circulating device 20 to the nano bubble generating device 10.

The operation of the nano bubble generating system having the above structure will be described below.

5, the bubbles of the nano bubble generating device 10 are supplied to the lower side of the nano bubble circulating device 20 through the first flow path 31 by rotating the rotating body 300 and the rotating body 800 at a high speed Space, more specifically, into the lower space of the circulation tank 700. [ At this time, the bubbles flowing into the circulation tank 700 can be crushed by the rotational force of the rotating body 800.

The bubbles crushed by the rotational force of the rotating body 800 pass through the mesh screen 500 while being moved into the space between the upper brush 821 and the lower brush 822. At this time, the liquid may pass through the mesh holes of the mesh screen 500 to generate small bubbles, and the bubbles may collide with the mesh holes of the mesh screen 500 and be re-crushed into smaller bubbles.

Bubbles continuously broken by the rotating body 800 and the mesh screen 500 can be moved from the nano bubble circulating device 20 to the nano bubble generating device 10 through the second flow path 32. The bubbles transferred to the nano bubble generator 10 can be circulated to the nano bubble circulator 20 after the operation of the nano bubble generator 10 described above, and the cycle described above can be repeated.

As described above, according to the present invention, by keeping the internal pressure of the water tank at a high pressure, it is possible to minimize the discharge of liquid bubbles to the water surface, and by controlling the vibration of the vibrator, the high frequency Hz, , Microbubbles, fine bubbles and ultra-fine bubbles (nano bubbles) can be freely adjusted, and by providing the liquid with vibration energy in multiple foci, it is possible to generate a plurality of bubble zones in the water tank, And it is possible to control the flow of the bubbles in the water tank by designing the lengths of the brushes of the rotating body to be different from each other.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. For example, a person skilled in the art can change the material, size and the like of each constituent element depending on the application field or can combine or substitute the embodiments in a form not clearly disclosed in the embodiments of the present invention, Of the range. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and that such modified embodiments are included in the technical idea described in the claims of the present invention.

10: Nano bubble generator 20: Nano bubble circulator
31: first flow path 32: second flow path
100: water tank 200: vibrator
210: vibrating body 220: diaphragm
230: Vibration transmission rod 300, 800: Rotor body
310: rotating shaft 320: first brush
330: second brush 400: gas supply unit
500: mesh screen 700: circulation tank
810: Rotary shaft 820: Brush

Claims (14)

A water tank capable of receiving liquid;
At least one vibrator for generating a plurality of bubble zones in which bubble is generated by providing vibration energy to the liquid in at least one axis; And
And at least one rotating body rotatably installed in the water tank to generate bubbles while generating bubbles while rotating while vibrating with vibration energy and re-crushing the generated bubbles to a smaller size,
The rotating body
A rotating shaft rotatably installed inside the water tub; And
And a brush provided at two or more stages on the rotating shaft and having different lengths for each stage. The method according to claim 1,
Further comprising a mesh screen installed inside the water tank to generate bubbles while the liquid passes and generate bubbles while vibrating with vibrational energy of the vibrator. The method according to claim 1,
And a gas supply unit for supplying an external gas into the liquid inside the water tank. A water tank capable of receiving liquid;
At least one vibrator for generating a plurality of bubble zones in which bubble is generated by providing vibration energy to the liquid in at least one axis; And
And at least one rotating body rotatably installed in the water tank to generate bubbles while vibrating with vibration energy to generate bubbles while rotating, and to re-
The vibrator
A vibrating body for generating and transmitting vibration energy;
At least one diaphragm being at least one surface of which is in contact with the liquid and is fixedly or movably mounted on the water tank; And
And a plurality of vibration transmitting rods connecting between the vibrating body and the vibration plate, the vibration transmitting rods being spaced apart from each other between the vibrating body and the vibration plate and the at least one vibration plate,
The rotating body
A rotating shaft rotatably installed inside the water tub; And
And a brush provided at two or more stages on the rotating shaft and having different lengths for each stage. delete The method according to claim 2, wherein
Wherein the mesh screen includes a plurality of mesh holes,
Wherein the centrifugal force of the rotating body causes the liquid to pass through the mesh hole to generate bubbles, and the bubbles generated in the water tank are re-pulverized. The method of claim 3, wherein
The gas supply unit
A gas supply device for supplying an external gas into the liquid;
A gas supply unit installed inside the water tank so that the external gas is injected into the liquid; And
And a line connecting between the gas supply unit and the gas supply unit to transfer the external gas supplied from the gas supply unit to the gas supply unit. The method according to claim 1,
The rotating body
And guides the bubble to the bubble area so that the bubble generated and crushed by the rotating body is pulverized by the vibration energy of the vibrator. 8. A nano bubble generating apparatus according to any one of claims 1 to 4 or 6 to 8;
A nano bubble generating device and a nano bubble circulating device for circulating the bubble;
A first flow path for guiding bubbles generated in the nano bubble generating device to the nano bubble circulating device; And
And a second flow path for guiding bubbles circulated in the nanobubble circulation device to the nanobubble generation device. 10. The method of claim 9,
The nano bubble circulation device
A circulation tank capable of receiving liquid and capable of flowing in and out of the nano bubble generating device and the bubble; And
And at least one rotating body rotatably installed in the water tank so that the bubbles in the liquid introduced from the nano bubble generating device are re-pulverized and bubbles are additionally generated. 11. The method of claim 10,
The nano bubble circulation device
And a mesh screen installed in the circulation tank so that the bubble is re-pulverized while the liquid passes and bubbles are additionally generated. 11. The method of claim 10,
The rotating body
An upper rotor shaft and a lower rotor shaft rotatably installed in the circulation tank; And
And a brush installed at one end of the upper rotary shaft and the lower rotary shaft. 10. The method of claim 9,
The first flow path
A lower wall of the nano bubble generating device and a lower wall of the nano bubble circulating device to correspond to a bubble area of the nano bubble generating device,
The second flow path
Wherein the nano bubble generating device is formed by passing through an upper wall of the nano bubble generating device and an upper wall of the nano bubble circulating device. 3. The method of claim 2,
The mesh screen
Wherein the plurality of mesh holes are provided so as to surround the rotating body in the water tank.

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