KR102130543B1 - Apparatus for generating nano bubble - Google Patents

Abstract

Disclosed is a nano bubble generating device. According to an aspect of the present invention, a fluid transfer unit providing a fluid for fluid transport, a gas supply line for supplying a gas different from the fluid in the fluid transported by the fluid transport unit, the fluid transport path A nanobubble generating apparatus is provided that includes a gas dissolving unit disposed to promote dissolution of gas supplied from a gas supply line into a fluid, and a nanobubble unit generating nanobubbles in a fluid conveyed from the gas dissolving unit.

Description

Nano bubble generator {APPARATUS FOR GENERATING NANO BUBBLE}

The present invention relates to a nano bubble generating device.

Recently, various utilization fields of high-concentration dissolved water (e.g., oxygen water, ozonated water, hydrogen water, carbonated water, nitrogen water, etc.), which increased the dissolved rate by dissolving gas in water, are known, and various studies on technologies for dissolving gas in liquid Is going on. In addition, as the function of the nanobubble as a means for dissolving the gas and a means for maintaining the dissolved state for a long time is known, research on this has been actively conducted.

In general, bubbles can be classified into milli-bubbles, micro-bubbles, micro-nano bubbles, and nano-bubbles according to their diameter. Micro-bubbles have micro-bubbles with a diameter of 10 to several tens of µm and at least 30 µm or less. Refers to, Micro Nano Bubble (micro Nano Bubble) refers to the micro-bubbles of several hundred nm ~ 10㎛, Nano Bubble (Nano Bubble) refers to the ultra-fine strength bubbles of hundreds of nm or less.

Unlike the normal ordinary air bubble, the milli-bubble, which rises rapidly in water and bursts on the surface, the nano-bubble receives less buoyancy due to its small volume, so the rate of rise to the water surface is very slow, and the air bubbles remain in the water for a long time. Since it has characteristics such as gas dissolving effect, self-pressurizing effect, and charging effect, it is possible to be applied to various fields such as sewage treatment-related facilities, advanced water treatment facilities, soil purification, agricultural and fishery industries, and wastewater treatment cleaning. high.

Due to the usefulness of such nanobubbles, research to generate nanobubbles continues, and various types of nanobubble generating devices have been developed accordingly, but in the case of existing nanobubble generating devices, ultra-fine bubbles of actual nano-scale are generated. It is difficult to create a nano bubble by processing the flow rate in large quantities, and it is more difficult to use it for industrialization.

Republic of Korea Patent Registration Publication No. 10-1792157 (Nov. 2017, Announcement)

The present invention is to provide a nano-bubble generating apparatus that can generate nano bubbles more effectively by increasing the solubility of gas in a fluid using a gas dissolving unit.

According to an aspect of the present invention, a fluid delivery unit providing a flow force for the transfer of fluid, a gas supply line for supplying a gas different from the fluid in the fluid conveyed by the flow force of the fluid transfer unit, the transport path of the fluid A nanobubble generating apparatus is provided that includes a gas dissolving unit disposed to promote dissolution of gas supplied from a gas supply line into a fluid, and a nanobubble unit generating nanobubbles in a fluid conveyed from the gas dissolving unit.

The gas dissolving unit may include a pipe disposed in a fluid transport path, and a mixing member disposed in the pipe to mix gas in the fluid.

The mixing member includes a central axis rotatably installed inside the pipe, a plurality of rotating members coupled to the central axis and rotating together with the central axis, and rotations installed on the central axis to rotate the rotating member by fluid flow force It may contain vanes.

The mixing member may include a rotating plate that is rotatably installed in the pipe and rotates by the fluid flow force.

The mixing member may be formed by bending a plurality of times, and may include a bending plate disposed along the longitudinal direction of the pipe.

The gas supply line is connected to the inlet of the pipe to supply gas toward the outlet of the pipe.

The fluid transfer unit may include an underwater feed pump installed to be submerged into a fluid supply source that supplies fluid.

The fluid transfer unit may further include an underwater circulation pump installed to be submerged inside the fluid source to circulate the fluid discharged from the nanobubble unit within the fluid source.

The gas dissolving unit and the nanobubble unit can be installed to be submerged inside the fluid source.

The nano-bubble unit generates a bubble including a housing in which an inlet and an outlet are formed to allow fluid to flow in and out, and a plurality of collision members disposed in a fluid movement path inside the housing to generate bubbles in the fluid according to collision or friction of the fluid It may be disposed in at least one of the unit and the inside and outside of the housing, and may include a flow path that induces bubbles in the fluid to be ultra-fine by stress generated during movement of the fluid.

According to the present invention, it is possible to generate nano bubbles more efficiently by using a gas dissolving unit to increase the solubility even with a small amount of gas in the fluid so that the fluid transfer unit and the nano bubble unit are less loaded.

1 is a view showing a nano-bubble generating apparatus according to an embodiment of the present invention.
Figure 2 is a photograph showing an example of a collision member of the nano-bubble generating apparatus according to an embodiment of the present invention.
3 is a view showing a nano-bubble generating apparatus according to another embodiment of the present invention.
4 is a view showing a nano-bubble generating apparatus according to another embodiment of the present invention.
5 is a view showing a nano-bubble generating apparatus according to another embodiment of the present invention.
6 is a view showing a nano-bubble generating apparatus according to another embodiment of the present invention.
7 to 9 are views showing a detailed structure and modification of the gas dissolving unit of the nano-bubble generating apparatus according to an embodiment of the present invention.
10 to 13 is a view showing a detailed structure and modification of the housing of the nano-bubble generating device according to an embodiment of the present invention.
14 to 25 are views showing detailed structures and modifications of a plurality of collision members of the nano-bubble generating apparatus according to an embodiment of the present invention.
26 to 28 are views showing detailed structures and modifications of the rotating blades of the nano-bubble generating apparatus according to an embodiment of the present invention.
29 to 32 are views showing detailed structures and modifications of the flow path of the nano-bubble generating apparatus according to an embodiment of the present invention.
33 to 35 are views showing a detailed structure and modification of the discharge pipe of the nano-bubble generating apparatus according to an embodiment of the present invention.

The present invention can be applied to a variety of transformations and may have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention. In the description of the present invention, when it is determined that a detailed description of related known technologies may obscure the subject matter of the present invention, the detailed description will be omitted.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from other components.

The terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "include" or "have" are intended to indicate the presence of features, numbers, steps, actions, components, parts or combinations thereof described herein, one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

Hereinafter, an embodiment of the nano-bubble generating apparatus according to the present invention will be described in detail with reference to the accompanying drawings, and in describing with reference to the accompanying drawings, identical or corresponding components are assigned the same reference numbers and overlapped therewith. The description will be omitted.

According to the present embodiment, as shown in FIG. 1, the nano bubble in which at least one gas selected from a gas group such as air, oxygen, nitrogen, ozone, carbon dioxide, etc. is supplied, mixed and dissolved in a fluid 10 such as water As a device for generating, the housing 110, the bubble generating unit 120, the flow path 130, the rotating shaft 140, the rotating blade 150, the driving unit 160, the chamber 170, the gas supply line 180 ), a fluid delivery unit (190, 192, 194), a discharge pipe (195), a nano-bubble generating apparatus 100 including a gas dissolving unit (200) is presented.

According to the present exemplary embodiment, as the gas dissolving unit 200 is used as a pre-treatment before the generation of the nanobubbles using the nanobubble unit, the dissolution of the gas in the fluid is promoted, more effectively generating the nanobubbles.

In addition, by using an underwater feeding pump (192) as the fluid transfer unit 190, it is possible to effectively generate a large amount of nanobubbles with less energy than when using an intake pump.

Hereinafter, each configuration of the nano-bubble generating apparatus 100 according to this embodiment will be described in more detail with reference to FIG. 1.

The fluid transport unit 190 may provide a flow force for transport of fluid. As illustrated in FIG. 1, the fluid transfer unit 190 may include an underwater supply pump 192 and an underwater circulation pump 194.

The submersible supply pump 192 is to be submerged into a fluid supply source 20 for supplying the fluid 10 as shown in FIG. 1, for example, a water tank, a river, a lake containing the fluid 10 such as water, etc. Can be installed. In this way, the underwater equipment located in the fluid supply source 20 may be installed in a buoy or barge, and other components below may also be stably installed using a buoy or barge in the same way when located in the fluid supply source 20.

As described above, by providing the flow force to the fluid 10 using the underwater supply pump 192, the facility can be operated at a lower power than when using the intake pump, thereby maximizing economic efficiency in generating nano bubbles. .

The water circulation pump 194 is installed to be immersed in the fluid source 20 as shown in FIG. 1 to circulate the fluid discharged from the nanobubble unit within the fluid source 20. That is, the underwater circulation pump 194 may be disposed at both ends of the entire facility to face the underwater supply pump 192, as shown in Figure 1, thereby discharging the fluid 10 discharged from the nano-bubble unit remotely Diffusion can lead to more effective circulation of fluid 10.

By inducing the diffusion and circulation of the fluid 10 using the underwater circulation pump 194, gases such as oxygen and ozone contained in the nanobubbles of the fluid 10 are more uniformly diffused in the fluid source 20. And can be dispersed.

In the case of this embodiment, all other components except the underwater supply pump and the underwater circulation pump may be installed and operated onshore.

The gas supply line 180 is a gas (air, oxygen, nitrogen, ozone) different from the fluid 10 in the fluid 10 conveyed by the flow force of the fluid transport units 190 and 192 as shown in FIG. 1. , Gas such as carbon dioxide).

The gas supply line 180, for example, as shown in Figure 1, the air stone is coupled to one end can discharge the gas more uniformly, the other end of the gas supply line 180 is a gas tank in which the gas is stored Can be connected.

More specifically, the gas supply line 180 is connected to the inlet of the pipe 210 of the gas dissolving unit 200 as shown in FIG. 1 to supply gas toward the outlet of the pipe 210.

As described above, by connecting the gas supply line 180 to the inlet of the pipe 210 and arranging the end portion so that the outlet of the pipe 210 hangs, the gas supplied by the gas supply line 180 flows in the fluid 10 Accordingly, it can be dissolved in the fluid 10 more effectively while being rapidly incorporated into the fluid 10.

The gas dissolving unit 200 is disposed in the transport path of the fluid 10 as illustrated in FIG. 1 to promote dissolution of the gas supplied from the gas supply line 180 in the fluid. More specifically, the gas dissolving unit 200 may be connected to the underwater supply pump 192, and the above-described gas supply line 180 may be connected to the inlet side of the gas dissolving unit 200.

In addition, a plurality of gas dissolving units 200 may be disposed along the transport path of the fluid 10. Specifically, as illustrated in FIG. 1, another gas dissolving unit 200 is interposed between the outlet 114 of the housing 110 and the flow path 130 and is primarily generated by the bubble generating unit 120. As the bubbles are more uniformly dispersed, the efficiency of generating nano bubbles can be further increased.

The gas dissolving unit 200 is disposed inside a pipe (210 in FIGS. 7 to 9) and a pipe (210 in FIGS. 7 to 9) disposed in the transport path of the fluid 10 as shown in FIG. It can be composed of a mixing member (220 in FIGS. 7 to 9) which is a specific structure and mechanism for mixing gas in the fluid 10. The specific structure and function of the gas dissolving unit 200 and the mixing member (220 in FIGS. 7 to 9) will be described later with reference to FIGS. 7 to 9.

The nanobubble unit may generate nanobubbles in the fluid 10 transferred from the gas dissolving unit 200. The nano-bubble unit, as shown in Figure 1, the housing 110, the bubble generating unit 120, the rotating shaft 140, the rotating blade 150, the driving unit 160, the chamber 170, and the flow path 130 ). Hereinafter, each configuration will be described in more detail.

The housing 110 is a configuration in which the inlet 112 and the outlet 114 are formed to allow the fluid 10 to flow in and out as shown in FIG. 1. The fluid 10 may be introduced into the inlet 112 of the housing 110 through the gas dissolving unit 200 by the driving force of the fluid transport units 190 and 192.

The bubble generating unit 120 is installed in the fluid 10 moving path inside the housing 110 as shown in FIG. 1 to generate bubbles in the fluid 10 according to collision or friction of the fluid 10. , It may be composed of a plurality of collision members disposed apart from each other, that is, a plurality of first collision member 122 and the second collision member (124).

In this case, at least some of the plurality of collision members may be plate-shaped members. That is, as illustrated in FIG. 1, the first collision member 122 and the second collision member 124 may have a plate shape, and may be alternately arranged.

In addition, at least some of the plurality of collision members may have a mesh structure in which a plurality of openings (127 of FIGS. 14 and 15) are formed to allow the fluid 10 to pass. In the case of the present embodiment, a case in which the first collision member 122 and the second collision member 124 are both of a mesh type in which openings (127 in FIGS. 14 and 15) are formed is presented as an example.

In this way, by arranging a plurality of collision members made of the first collision member 122 and the second collision member 124 inside the housing 110, the fluid 10 flowing into the housing 110 is the first collision member ( 122) and the second collision member 124 to cause collision and friction, and accordingly, a fine bubble may be generated in the fluid 10.

On the other hand, inside the housing 110, as shown in FIG. 1, the rotation shaft 140 is disposed in the longitudinal direction so that both ends can be rotatably installed in the housing 110, and at least some of the plurality of collision members, specifically As a result, the first collision member 122 is coupled to the rotation shaft 140 and rotates together with the rotation shaft 140, and the second collision member 124 may be fixed to the housing 110 in a fixed type. .

In this way, the first collision member 122 coupled to the rotation shaft 140 may rotate by the driving force of the rotating blade 150 or the driving unit 160. First, as shown in FIG. 1, a first collision member 122 may be rotated by power by coupling a driving unit 160 such as a motor to the rotating shaft 140. In this case, the size and/or amount of bubbles may be adjusted by adjusting the rotation speed of the first collision member 122 through a speed adjustment device composed of a gear box or an inverter.

In addition, the first collision member 122 may also be rotated in a non-powered manner without using the driving unit 160 as described above. 1, a rotating blade 150 may be installed at an end of the rotating shaft 140. The rotating blade 150 may rotate at least a portion of the plurality of collision members, that is, the first collision member 122 by the flow force of the fluid 10 flowing into the housing 110. In this case, the fluid 10 may transmit a flow force to the first collision member 122 in an axial flow, transverse flow, or dead flow.

As described above, in the present embodiment, two modes may be operated: a non-powered method using a rotary blade 150 and a power method using a drive unit 160. Among them, an advantage of reducing driving energy when using a non-powered method In this case, when using the power method, it is possible to actively control the bubble size, the amount of generation, etc., and thus has the advantage of generating a higher quality nano bubble.

On the other hand, the rotary blade 150 is primarily used for rotational driving of the first collision member 122 as described above, but also the rotary blade 150 is also fluid according to collision or friction of the fluid 10 ( By performing the secondary role of generating bubbles in 10), it is possible to generate nano bubbles more abundantly.

In the case of the present embodiment, as described above, by configuring the first collision member 122 as a rotor and the second collision member 124 as a stator, nano bubbles can be generated more effectively. More specifically, the first collision member 122 and the second collision member 124 may be formed of a mesh-like structure having openings 127, respectively, and they may be in a state where the surfaces facing each other are substantially in contact or nearly in contact. Since it is arranged at relatively small intervals to maintain, the fluid 10 passing through the first collision member 122 and the second collision member 124 is in contact with the first collision member 122 and the second collision member 124 It causes collision and friction, and at the same time, cavitation may occur in the fluid 10 according to the rotation of the first collision member 122.

As such, collision with the fluid 10, friction, and cavitation in the fluid 10 work in combination, so that the particles of the fluid 10 can be atomized to a minimum number of nanometers (nm) to tens of micrometers (µm). The gas dissolution rate in (10) may be further increased.

In this configuration, a plurality of first collision members 122 (rotors) are installed at regular intervals, the number of rotating shafts 140 is as long as the inner space of the housing 110 allows two axes within the housing 110. It is possible to install three or more axes, which will be described later.

Meanwhile, the bubble generating unit 120 may include a housing 110 and a collision member 121 of FIG. 2 accommodated therein. Here, the collision member 121 may have a structure in which the surface area is maximized by bending a plurality of plate-shaped members as shown in FIG. 2 to form a plurality of wrinkles, for example, a material having rigidity by plasticity such as PVC. It can be done. In addition, a plurality of nano-sized pores (or holes) may be formed on the surface of the collision member 121.

As described above, by maximizing the surface area of the collision member 121 and forming nano-voids or nano-holes on the surface, the fluid is generated while colliding or rubbing with the collision member 121 of the fluid 10 flowing into the housing 110. In 10), it is possible to generate nano bubbles abundantly.

In this case, the bubble generating unit 120 may be arranged in plural, one of which is configured to have a first collision member 122 and a second collision member 124, as shown in FIG. 2 may be composed of a housing 110 filled with a plurality of collision members 121 as shown in FIG. The bubble generating unit 120 in which the plurality of collision members 121 are filled is selective to both the front end, the rear end, or the front end of the bubble generating unit 120 having the first collision member 122 and the second collision member 124. Can be installed as

The flow path 130 is disposed in at least one of the inside and the outside of the housing 110, and may induce bubbles in the fluid 10 to be ultra-fine by stress generated during movement of the fluid 10.

As the fluid 10 passes through the flow path 130, friction occurs with the surface of the flow path 130, for example, shear stress is generated in the fluid 10, and thus a boundary layer flow separation may occur. Bubbles in the fluid 10 may be more micronized and nano-bubbled.

1, the flow path 130 may be formed of a zigzag structure (a zigzag path in a vertical direction, a zigzag path on the same plane, or a path in which they are applied together) as shown in FIG. 1, and the fluid 10 is sufficiently stressed. It may be formed to a length long enough to be generated, and its cross-sectional area may be sufficiently narrow to smoothly induce stress generation in the fluid.

The flow path 130 may be disposed before or after the bubble generating unit 120 inside the housing 110, and may be separately provided outside the housing 110 as illustrated in FIG. 1. 1, the chamber 170 may be connected to the outlet 114 of the housing 110.

Meanwhile, the flow path 130 may be disposed before the bubble generating unit 120 based on the fluid 10 moving path. As described above, the flow path 130 is disposed before the bubble generating unit 120 to pre-treat the fluid 10 flowing into the housing 110 by the shear stress generated until it passes through the boundary layer of the flow path surface, thereby generating and generating bubbles. The refinement can be made more smoothly.

Next, a nano bubble generating apparatus 100 according to another embodiment of the present invention will be described with reference to FIG. 3.

In the case of this embodiment, since there is a difference from the above-described embodiment in terms of the configuration of the fluid transfer unit 190, the arrangement structure of the gas dissolving unit 200, and the presence or absence of a flow path and a driving unit, the present embodiment is mainly focused on these differences. Let's explain.

As the fluid transfer unit 190, various supply pumps other than an underwater pump may be used. The fluid transfer unit 190 may be installed on the ground outside the fluid supply source 20 and does not have a separate underwater circulation pump.

And the gas dissolving unit 200 may be connected to the front and rear ends of the fluid transfer unit 190, respectively. The gas supply line 180 may be connected to supply gas to the inlet side of the gas dissolving unit 200 coupled to the front end of the fluid transferring unit 190, and the gas dissolving unit connected to the rear end of the fluid transferring unit 190 ( 200) may not be injected with a separate gas.

Also, in the case of this embodiment, a separate flow path may not be formed. That is, a separate flow path is not formed inside the housing 110 as well as outside the housing 110. In this way, it is possible to generate sufficient nanobubbles through the interaction of the gas dissolving unit 200 and the bubble generating unit 120 installed at the front and rear ends of the fluid transfer unit 190 even though the flow path does not exist.

And in the case of the present embodiment, there is also no drive unit, and thus rotational movement of the bubble generating unit 120 may occur by rotation of the rotating blade 150 by the flow force of the fluid 10.

Next, a nano bubble generating apparatus 100 according to another embodiment of the present invention will be described with reference to FIG. 4.

In the case of this embodiment, since there is a difference from the above-described embodiment in terms of whether the installation of water in all facilities, the arrangement structure of the gas dissolving unit 200, and the configuration of the gas supply line 180, the present embodiment is mainly focused on these differences. Let's explain.

In the case of the present embodiment, the entire installation including the fluid transfer unit 190 may be installed underwater to be submerged in the fluid supply source 20. As described above, these underwater installations can be installed on buoys or barges.

In addition, the gas dissolving unit 200 may be disposed at the front end and the rear end of the water supply pump 192, respectively. In addition, a gas supply line 180 is connected to each of the gas dissolving units 200 to inject the same or different gases into the fluid 10.

In this case, the gas dissolving unit (see 200 in FIG. 7) disposed at the front end of the underwater supply pump 192 is connected to the axis of the motor of the underwater supply pump 192 and the operation of the underwater supply pump 192 As it rotates together, the molecular cluster of the fluid 10 can be decomposed into an impact and refined.

In addition, a strainer for filtering foreign substances in the fluid 10 to be sucked may be installed at the inlet side of the gas dissolving unit 200 disposed at the front end of the submersible supply pump 192, and at the outlet side of the gas dissolving unit 200, a diffuser and It is also possible to adjust the discharge flow rate and pressure of the fluid 10 by mounting a valve.

Next, a nano bubble generating apparatus 100 according to another embodiment of the present invention will be described with reference to FIG. 5.

In the case of the present embodiment, since there is a difference from the above-described embodiment in terms of whether or not the installation of all the equipment is underwater, the arrangement structure of the gas dissolving unit 200, the structure of the flow path 130, and the presence or absence of the driving unit, the present embodiment is mainly focused on these differences Let me explain an example.

In the case of this embodiment, as in the embodiment of FIG. 4, the entire facility including the fluid transfer unit 190 may be installed underwater to be submerged in the fluid supply source 20.

In addition, the gas dissolving unit 200 may be disposed only at the front end of the water supply pump 192. The gas dissolving unit (refer to 200 in FIG. 7) is connected to the shaft of the motor of the underwater feed pump 192 and rotates with the operation of the underwater feed pump 192 to decompose the cluster of fluid 10 molecules into shock. Can be refined.

In addition, the flow path 130 may be provided inside the housing 110, and more specifically, may be installed after the bubble generating unit 120 based on the flow path of the fluid. Therefore, both primary bubble generation and secondary bubble micronization may occur within the housing 110.

And in the case of the present embodiment, there is no driving unit, and thus, the rotational movement of the bubble generating unit 120 occurs by rotation of the rotating blade 150 by the flow force of the fluid 10.

Next, a nano bubble generating apparatus 100 according to another embodiment of the present invention will be described with reference to FIG. 6.

In the case of this embodiment, the difference from the above-described embodiment in terms of whether all the installations are installed underwater, the arrangement structure of the gas dissolving unit 200 and the configuration of the gas supply line 180, the structure of the flow path 130, and the presence or absence of a rotary vane Therefore, the present embodiment will be described based on these differences.

In the case of this embodiment, as in the embodiment of FIG. 4, the entire facility including the fluid transfer unit 190 may be installed underwater to be submerged in the fluid supply source 20.

In addition, the gas dissolving unit 200 may be disposed at the front end and the rear end of the water supply pump 192, respectively. In addition, a gas supply line 180 is connected to each of the gas dissolving units 200 to inject the same or different gases into the fluid 10.

In this case, the gas dissolving unit (see 200 in FIG. 7) disposed at the front end of the underwater supply pump 192 is connected to the axis of the motor of the underwater supply pump 192 and the operation of the underwater supply pump 192 As it rotates together, the molecular cluster of the fluid 10 can be decomposed into an impact and refined.

In addition, the flow path 130 may be provided inside the housing 110, and more specifically, may be installed after the bubble generating unit 120 based on the flow path of the fluid. Therefore, both primary bubble generation and secondary bubble micronization may occur within the housing 110.

And in the case of this embodiment, there is no rotating blade inside the housing 110, and thus the rotational movement of the bubble generating unit 120 is possible only by the driving force of the driving unit 160.

Next, a detailed structure and modification of the gas dissolving unit 200 of the nano-bubble generator according to the present embodiment will be described with reference to FIGS. 7 to 9.

As described above, the gas dissolving unit 200 may be composed of a pipe 210 installed in the transport path of the fluid 10 and a mixing member 220 disposed inside the pipe 210.

7, the mixing member 220 may include a central axis 221, a rotating member 222, a fixing member 223, and a rotating vane 224 as shown in FIG. 7. The mixing member 220 is installed in the path of the fluid 10 in the pipe 210 to increase the solubility of gas in the fluid 10 according to collision or friction of the fluid 10.

As shown in FIG. 7, a central axis 221 may be disposed in the interior of the pipe 210 to be rotatably installed at both ends of the pipe 210, and the rotating member 222 may include such a central axis ( It is coupled to the 221 can be rotated with the central axis 221, the fixed member 223 is fixed type can be fixedly installed to be spaced apart from the rotating member 222 in the pipe 210. Also, unlike FIG. 7, the central axis 221 may be disposed in the radial direction of the pipe 210, and the fixing member 223 may be omitted in the pipe 210.

In this case, the rotating member 222 and the fixing member 223 may be plate-shaped members, and may be alternately arranged as illustrated in FIG. 7. In addition, the rotating member 222 and the fixing member 223 may have a mesh-like structure in which a plurality of openings are formed to allow the fluid 10 to pass.

By alternately arranging the rotating member 222 and the fixing member 223 inside the pipe 210, the fluid 10 flowing into the pipe 210 collides with these rotating members 222 and the fixing member 223. And friction, and thus dissolution of gas in the fluid 10 may be further promoted.

The rotation member 222 coupled to the central shaft 221 may be rotated in a non-powered manner by the rotation vane 224. 7, a rotation vane 224 may be installed at an end of the central shaft 221. The rotation vane 224 may rotate the rotation member 222 by the flow force of the fluid 10 flowing into the pipe 210.

8 is a variation of the structure of the mixing member 220, the mixing member 220 is rotatably installed in the pipe 210 may be composed of a rotating plate that rotates by the flow force of the fluid (10). That is, a plurality of rotating plates have a rectangular shape and may be arranged at regular intervals along the length direction of the pipe 210, and these rotating plates are respectively installed on a central axis transverse to the diameter of the pipe 210, and the fluid 10 Rotational motion is possible according to the flow.

In this way, by installing a plurality of rotating plates in the path of movement of the fluid 10, the fluid 10 causes collision and friction with the rotating plate, so that mixing of gas in the fluid 10 can be promoted.

In addition, FIG. 9 shows another modification of the mixing member 220, and the mixing member 220 is formed by bending a plurality of times and may be formed of a bending plate disposed along the longitudinal direction of the pipe 210.

More specifically, the mixing member 220 may be bent alternately in the vertical direction, as shown in FIG. 9, and may be a bending plate having a zigzag shape, and such a bending plate may be installed in a plurality of pipes 210 by adjusting its width. have.

In the case of the mixing member 220 of FIG. 9, the fluid 10 acts as an obstacle to a certain degree, so that the fluid 10 flows while colliding and rubbing on the bent plate, thereby injecting it into the fluid 10 The gas can be more effectively dispersed and mixed in the fluid 10.

Next, a detailed structure and modification of the housing 110 of the nano-bubble generator according to the present embodiment will be described with reference to FIGS. 10 to 13.

10 shows the inner wall structure of the housing 110, and the inner wall 110a of the housing 110 may have a concavo-convex structure in which a plurality of protrusions 110b are formed, or the wall surface as shown in FIG. Accordingly, a plurality of concave portions 110c may have a meshed structure. In addition, the inner wall 110a of the housing 110 may have a spiral structure in which a plurality of spiral grooves 110d are formed along the wall surface of the inner wall 110a, as shown in FIG. 12.

In this case, the fluid 10 introduced through the inlet 112 provided on one side of the housing 110 includes the bubble generating unit 120 and the flow path 130 as well as the protrusion 110b, the concave portion 110c, or the spiral groove ( The dissolution rate of the gas is further increased and further refined by collision and friction with 110d), so that nano-sized ultra-fine bubbles can be generated more effectively.

FIG. 13 shows a structure in which the wall surface of the inner wall 110a has a substantially trapezoidal shape as the inner diameter of the housing 110 gradually decreases toward the upper portion as a modification of the structure of another housing 110. According to this structure, the fluid 10 introduced into the housing 110 is in the fluid 10 due to an increase in pressure due to a reduction in the inner diameter along with a collision and friction effect by the bubble generating unit 120 and the flow path 130. The gas dissolution rate is further increased, and accordingly, the fluid 10 may be further refined to promote the generation of nanobubbles.

Next, a detailed structure and modification example of a plurality of collision members of the nanobubble generating device according to the present embodiment will be described with reference to FIGS. 14 to 25.

14 shows examples of the mesh structure of the rotor (the first collision member 122) and the stator (the second collision member 124), and according to FIG. 14, the first collision member 122 and the second collision The mesh structure of the member 124 may have a lattice shape of a planar structure. According to FIG. 15, the mesh structure of the first collision member 122 and the second collision member 124 can achieve a lattice structure of a rugged stepped shape with the horizontal height 125 and the vertical height 126 having a constant height difference. have.

The fluid 10 collides with the crossbar 125 and the vertical bar 126 while passing through the mesh openings 127 having a lattice shape, wherein the first collision member 122 and the second collision member 124 Since the collision and friction of the fluid 10 can be promoted according to the relative rotation, the particles of the fluid 10 can be further atomized to effectively generate nanobubbles, thereby significantly increasing the gas dissolution rate.

On the other hand, in the present embodiment, although the lattice-shaped mesh structure is illustrated, the present invention is not limited to this, and various types of mesh structures such as a honeycomb shape, a triangle, and a pentagon are also included in the scope of the present invention.

16 to 18 show an example of a two-axis mesh-type rotor (first collision member 122) of a surface contact method, and the rotating shaft 140 is arranged in two rows inside the housing 110, respectively A plurality of first collision members 122 that are simultaneously rotated together of the driving unit 160 may be installed on the rotating shaft 140 at regular intervals along the axis.

At this time, the distance between the axes of the rotating shaft 140 may be a distance such that the ends of the first collision members 122 arranged in each rotating shaft 140 are alternately inserted. According to FIGS. 16 and 17, the first collision members 122 arranged on each rotation shaft 140 are respectively fitted between the first collision members 122 arranged on the opposite rotation axis 140 so as to face each other up and down. The distance between the layers of the first collision members 122 facing each other in this state is maintained, and the surfaces of the upper and lower first collision members 122 are substantially in contact with or substantially in contact with each other, and the fluid 10 can escape. Enough is enough. As another example, the first collision members 122 may be arranged side by side in a state spaced apart from each other as shown in FIG. 18, and the outer shape of the housing 110 may be various shapes such as a round circle or a square.

19 and 20 show another example of a two-axis mesh-type rotor (first collision member 122) and a stator (second collision member 124) of a surface contact method, inside the housing 110 The rotating shafts 140 are arranged in two rows, and the plurality of first collision members 122 that are simultaneously rotated together with the driving unit 160 may be installed at each rotating shaft 140 at regular intervals along the axis.

Between the first collision members 122 for each layer arranged on the rotating shaft 140, a plurality of stators facing each other at a predetermined interval while being fixed to the inner wall of the housing 110 (manufactured by 2, the collision member 124 may be disposed. At this time, the distance between the layers of the first collision member 122 and the second collision member 124 is substantially in contact with or near the surfaces of the first collision member 122 and the second collision member 124 that face each other. It is sufficient that the fluid 10 can escape while maintaining the.

21 to 23 show another example of a three-axis mesh-type rotor (first collision member 122) and a stator (second collision member 124) of a surface contact method, inside the housing 110 The rotating shaft 140 is arranged in three rows, and a plurality of first collision members 122 that are simultaneously rotated together of the driving unit 160 may be installed at each rotating shaft 140 at regular intervals along the axis. .

At this time, the distance between the axes of the rotating shaft 140 may be a distance such that the ends of the first collision members 122 arranged in each rotating shaft 140 are alternately inserted. According to FIGS. 21 and 22, the first collision members 122 arranged on the respective rotation shafts 140 are at least partially sandwiched between the first collision members 122 arranged on the opposite rotation shaft 140 so as to face each other up and down. The distance between the layers of the first collision members 122 facing each other in this state is maintained, and the surfaces of the upper and lower first collision members 122 are substantially in contact with or substantially in contact with each other, and the fluid 10 can escape. Enough is enough. As another example, the first collision members 122 may be arranged side by side in a state spaced apart from each other as shown in FIG. 23, and the outer shape of the housing 110 may be various shapes such as round or square.

24 shows another example of the rotor (the first collision member 122) and the stator (the second collision member 124), the first arranged on the rotation shaft 140 inside the housing 110 As shown in FIG. 24, the collision members 122 have a structure that gradually expands toward the flow direction of the fluid 10, or as shown in FIG. 25, the diameter gradually decreases and decreases at an intermediate point. It can be re-expanded, for example a mortar or hourglass.

Next, with reference to FIGS. 26 to 28, a detailed structure and modification of the rotary blade 150 of the nano-bubble generator according to the present embodiment will be described.

FIG. 26 shows a rotating blade 150 provided in the nano-bubble generating apparatus 100. According to FIG. 17, the rotating blade 150 may be formed to extend radially on the circumferential surface of the rotating shaft 140. . The rotating blade 150 may have a constant width in the longitudinal direction of the rotating shaft 140 and a constant curvature with respect to the rotating direction. A collision member may be disposed at a position spaced apart at regular intervals above and below the rotary blade 150, and the rotary blade 150 has a flat or stepped lattice structure or has an opening 152 similar to the collision member. It can be formed into various types of mesh structures.

In addition, according to FIG. 27, the rotary blades 150 may be arranged at least two at regular intervals along the circumferential surface of the rotary shaft 140 to form a multi-layer structure. In this case, the vertical distance between the rotating blades 150 may be set to correspond to the distance between the collision members. In addition, the rotary blade 150 may be formed in a screw propeller type as shown in FIG. 28 in addition to the above-described forms.

Next, a detailed structure and modification of the flow path 130 of the nano-bubble generating device according to the present embodiment will be described with reference to FIGS. 29 to 32.

26 to 28 show the flow path 130 formed in the housing 110 from the upper surface. As shown in FIG. 26, the flow path 130 is formed in a spiral structure that gradually increases in diameter from the center to the outside. Can. The inlet and outlet of the flow path 130 may be formed at the center and the outer side, respectively.

In addition, the flow path 130 may be formed along the vertical direction based on the drawing as shown in FIG. 27. In this case, the inlet and the outlet of the flow path 130 may be respectively formed at the left and right ends based on the drawing, and thus the fluid 10 entering the flow path 130 passes through the flow path 130 in a zigzag direction along the vertical direction. Is done.

In addition, the flow path 130 may have a more complicated structure as shown in FIG. 28. In the case of the flow path 130 of FIG. 28, unlike the FIG. 27, entrances and exits may be formed at the upper left and upper right, respectively. Accordingly, the right and left lower flow paths 130 may be formed only in areas other than the entrance and exit.

On the other hand, the housing 110 may be formed to have a rectangular cross-section, in this case the flow path 130 may have a multi-layer structure along the vertical direction as shown in FIG. A zigzag passage is formed for the flow of the fluid 10 between each layer, and a plurality of separation plates 132 may be formed on each layer of the flow path 130 so that friction of the fluid 10 occurs smoothly.

Next, with reference to FIGS. 33 to 35, detailed structures and modifications of the discharge conduit 195 of the nanobubble generating device according to the present embodiment will be described.

33 shows the structure of the discharge conduit 195 of the nano-bubble generating apparatus 100, and at least a part of the discharge conduit 195 has a constant shape to further refine the size of the fluid 10 particles. Collision units of the can be built. These collision units, for example, as shown in FIGS. 33 and 34, have a shape in which the diameter of the fluid 10 gradually increases or a plurality of panel layers are arranged as shown in FIG. Can be provided. At the interior 196 of the discharge conduit 195, both ends of the collision unit are spaced at least a predetermined distance from the inner wall of the discharge conduit 195 to allow the flow of the fluid 10 along the discharge conduit 195.

First, according to FIG. 33, the collision unit is radially extended at a predetermined interval on the surface of the main body portion 197a and the main body portion 197a having a structure that gradually expands in the flow direction to be connected to the inner surface of the discharge channel 195 Consisting of a plurality of partition walls 198a, through-holes 199 of a certain size may be formed between each partition 198a to allow the fluid 10 to pass therethrough. In addition, in the case of Figure 34, the collision unit may be composed of a helical groove or a helical protrusion 198b formed along the longitudinal direction on the surface of the body portion 197b and the body portion 197b having a structure gradually expanding in the flow direction. have. In addition, in the case of FIG. 35, the collision unit is a form in which a plurality of panel layers 197c are arranged in the interior 196 of the discharge conduit 195, and a plurality of protrusions of various shapes are formed on the upper and lower surfaces of each panel layer 197c ( 198c) may be formed.

As described above, one embodiment of the present invention has been described, but those skilled in the art may add, change, delete, or add components within the scope of the present invention as described in the claims. It will be said that the present invention can be variously modified and changed by the like, and this is also included within the scope of the present invention.

10: fluid
20: fluid source
100: nano bubble generating device
110: housing
112: inlet
114: outlet
120: bubble generating unit
121: no collision
122: first collision member
124: second collision member
125: Runway
126: vertical
127: opening
130: Euro
140: rotating shaft
150: rotating wing
152: opening
160: drive unit
170: chamber
180: gas supply line
190: fluid transfer unit
192: submersible supply pump
194: underwater circulation pump
195: discharge pipe
200: gas melting unit
210: piping
220: mixing member
221: central axis
222: rotating member
223: fixing member
224: rotating vane

Claims (10)

A fluid transfer unit that provides a flow force for the transfer of fluid;
A gas supply line supplying a gas different from the fluid in the fluid conveyed by the flow force of the fluid transport unit;
A gas dissolving unit disposed in a path for conveying the fluid to promote dissolution of the gas supplied from the gas supply line into the fluid; And
And a nanobubble unit that generates nanobubbles in the fluid transferred from the gas dissolving unit,
The nano-bubble unit,
A housing in which an inlet and an outlet are formed to allow the fluid to flow in and out; And
A bubble generating unit disposed in a fluid movement path inside the housing and including a plurality of collision members that generate bubbles in the fluid according to collision or friction of the fluid,
The plurality of collision members,
A plurality of first collision members rotatably coupled to the interior of the housing; And
A plurality of second collision members fixed to the inside of the housing and alternately arranged with the plurality of first collision members,
At least one of the first collision member and the second collision member has a mesh structure in which a plurality of flow passages of the fluid are formed,
The first collision member and the second collision member are disposed adjacent to each other to cause collision, friction, and cavitation by rotation of the first collision member to the fluid flowing through the flow passage, so that nanobubbles and A device for generating nanobubbles, generating at least one of microbubbles.
According to claim 1,
The gas dissolving unit,
Piping disposed in the fluid transport path; And
And a mixing member disposed inside the pipe to mix the gas in the fluid.
According to claim 2,
The mixing member,
A central axis rotatably installed inside the pipe;
A plurality of rotating members coupled to the central axis and rotating together with the central axis;
The nano-bubble generating apparatus is installed on the central axis and includes a rotating vane that rotates the rotating member by the fluid flow force.
According to claim 2,
The mixing member,
A nano-bubble generation device including a rotating plate rotatably installed in the pipe to rotate by the fluid flow force.
According to claim 2,
The mixing member,
A nano-bubble generating apparatus comprising a bending plate formed by bending a plurality of times and disposed along the longitudinal direction of the pipe.
According to claim 2,
The gas supply line is connected to the inlet of the pipe, the nano-bubble generating device for supplying the gas toward the outlet of the pipe.
According to claim 1,
The fluid transfer unit includes an underwater feed pump installed to be submerged into a fluid supply source for supplying the fluid, the nano-bubble generating device.
The method of claim 7,
The fluid transfer unit is installed to be immersed in the fluid supply source, further comprising an underwater circulation pump for circulating the fluid discharged from the nanobubble unit in the fluid supply source.
The method of claim 7,
The gas dissolving unit and the nano-bubble unit is installed to be submerged inside the fluid source, nano-bubble generating device.
According to claim 1,
The nano-bubble unit,
The nano-bubble generating apparatus is disposed on at least one of the inside and the outside of the housing, and includes a flow path that induces the bubbles in the fluid to be ultra-fine by stress generated during movement of the fluid.

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