KR102663295B1 - Nano-bubble generator - Google Patents

Abstract

The present invention relates to a nanobubble generator including a particle moving member.
A nanobubble generator according to an embodiment of the present invention includes a chamber; a plurality of particles disposed inside the chamber; an inlet that introduces fluid into the chamber; A rotating part including a propeller rotating by the fluid, a rotating shaft on which the propeller rotates, and a moving member that moves the plurality of particles by rotation of the rotating shaft; and a discharge unit discharging the fluid inside the chamber to the outside.

Description

Nano-bubble generator including a particle moving member {Nano-bubble generator}

The present invention relates to a nanobubble generator including a particle moving member.

A nanobubble generator is a device that generates nano-sized bubbles in a fluid to achieve effects such as sterilization and cleaning. These nanobubble generators are applied to various fields such as food cleaning devices, aquariums, cleaning devices for manufacturing electronic devices such as semiconductors, and medical device cleaning devices.

Meanwhile, methods for generating nanobubbles include placing fine particles inside a chamber and passing a liquid mixed with gas through them, using ultrasonic vibration, and passing through a fine mesh.

Korean Patent No. 10-2150865, a prior art document, discloses a technology for generating nanobubbles by passing particles placed inside a chamber.

Korean Patent No. 10-2150865

The purpose of the present invention is to provide a nanobubble generator that can maintain nanobubble generation efficiency by continuously changing the path through which the fluid generated in the particles inside the chamber flows.

Additionally, particles inside the chamber can be cleaned.

A nanobubble generator according to an embodiment of the present invention includes a chamber; a plurality of particles disposed inside the chamber; an inlet that introduces fluid into the chamber; A rotating part including a propeller rotating by the fluid, a rotating shaft on which the propeller rotates, and a moving member that moves the plurality of particles by rotation of the rotating shaft; and a discharge unit discharging the fluid inside the chamber to the outside.

The moving member is disposed inside the area where the plurality of particles are disposed, and the moving member includes at least one wing member extending from one side of the rotating shaft, and when the rotating shaft rotates, the wing member rotates. By doing this, the plurality of particles can be moved.

The moving member includes a partition member that divides the area where the plurality of particles are arranged into at least two regions, the partition member is connected to one side of the rotating shaft, and when the rotating shaft rotates, the partition rotates. By doing this, the plurality of particles can be moved.

It may further include a gas supply pipe supplying gas into the chamber.

The nanobubble generator according to an embodiment of the present invention can maintain nanobubble generation efficiency by continuously changing the path through which the fluid generated in the particles inside the chamber flows.

Additionally, particles inside the chamber can be cleaned.

Figure 1 shows a nanobubble generator according to an embodiment of the present invention.
FIG. 2 shows the chamber housing in FIG. 1 removed.
Figure 3 shows the particles removed from Figure 2.
Figure 4 shows the rotating part of Figure 3.
Figure 5 shows a cross-sectional view of Figure 1.
Figure 6 shows a nanobubble generator according to another embodiment of the present invention.
Figure 7 shows a cross-sectional view of Figure 6.
Figure 8 shows a nanobubble generator according to another embodiment of the present invention.
FIG. 9 shows the chamber housing in FIG. 8 removed.
Figure 10 shows the particles removed from Figure 8.
Figure 11 shows the rotating part of Figure 10.

Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. However, the embodiments of the present invention may be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below.　 Additionally, the embodiments of the present invention are provided to more completely explain the present invention to those with average knowledge in the relevant technical field.　 Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation, and elements indicated by the same symbol in the drawings are the same elements. In addition, the same symbols are used throughout the drawings for parts that perform similar functions and actions. In addition, throughout the specification, “including” a certain element means that other elements may be further included, rather than excluding other elements, unless specifically stated to the contrary.

1 to 5 show a nanobubble generator 100 according to an embodiment of the present invention. In Figure 5, arrows indicate the flow of fluid.

1 to 5, the nanobubble generator 100 according to an embodiment of the present invention includes a chamber 110; A plurality of particles 120 disposed inside the chamber 110; An inlet 130 that introduces fluid into the chamber 110; A propeller 141 rotating by the fluid, a rotating shaft 142 that is the axis around which the propeller 141 rotates, and a moving member that moves the plurality of particles 120 by rotation of the rotating shaft 142 ( Rotating part 140 including 143); and a discharge unit 150 that discharges the fluid inside the chamber 110 to the outside.

The chamber 110 includes particles 120 therein and functions to form nanobubbles in the fluid passing through the interior of the chamber 110. The shape or material of the chamber 110 is not particularly limited as long as it can contain particles 120 therein.

Referring to FIG. 1, the chamber 110 may have a cylindrical shape, and inlets and outlets are disposed on the top and bottom surfaces to allow fluid to flow from the top to the bottom. However, the direction in which the fluid flows, the location or number of inlets and outlets are not particularly limited.

The particles 120 are placed in the inner space of the chamber 110, and as fluid flows between the particles 120, the gas present inside the fluid is broken into small pieces, thereby creating nano-sized bubbles. The average particle diameter of the particles 120 may be 0.1 to 3.0 mm, preferably 0.1 to 1.5 mm, more preferably 0.1 to 0.8 mm, and even more preferably 0.1 to 0.3 mm. If the average size of the particles 120 is less than 0.1 mm, a high load occurs when the liquid passes between the particles 120, and the flow rate may be significantly reduced. In addition, when the average size of the particles 120 exceeds 1.5 mm, the space between the particles 120 is enlarged, so the size (particle diameter) of the bubbles formed exceeds 1000 nm, reducing nanobubble formation efficiency. do. When the size of the particles 120 is 0.8 mm or less, the size (particle diameter) of more than 95% of the nanobubbles formed is maintained at 500 nm or less, allowing nanobubbles to be formed more stably. In addition, when the size of the particles 120 is set to 0.3 mm or less, the size (particle diameter) of more than 99% of the formed nanobubbles is maintained at 500 nm or less, allowing nanobubbles to be formed more stably.

The shape of the particles 120 is not particularly limited, but may be in the shape of a spherical or oval bead in order to prevent damage to the particles 120 and to constantly control the distance between the particles 120.

The material of the particles 120 is not particularly limited, but may be a material that has chemical resistance to various liquids and durability against collision. For example, the material of the particles 120 may be inorganic materials such as ceramics and metals, and organic materials such as PET, PS, PP, HDPE, LDPE, and PVP.

The inlet 130 and outlet 150 are disposed on one side of the chamber 110 to allow fluid to flow through the inlet and outlet of the chamber 110. The inlet 130 functions to introduce fluid into the chamber 110. As shown in FIGS. 1 to 5, a path through which fluid flows may be simply provided, but components such as filters and valves may be further included as needed. The discharge unit 150 functions to discharge fluid from the inside of the chamber 110. Like the inlet 130, a path through which fluid flows may be simply provided as shown in FIGS. 1 to 5, but components such as filters and valves may be further included as needed.

In one embodiment, the inside of the chamber 110 may further include screen members 170 and 180 arranged to contact at least a portion of the area where the particles 120 are disposed. The screen members 170 and 180 may perform the function of preventing the particles 120 from being lost and allowing the particles 120 to be stably placed. Additionally, the screen members 170 and 180 may perform a filtering function to block foreign substances from entering or exiting. In addition, the screen members 170 and 180 contain fine pores, thereby forming a smaller size of nanobubbles generated by the plurality of particles 120, or preventing bubbles of a certain size or more from being discharged. can be performed.

Referring to FIGS. 2, 3, and 5, the screen members 170 and 180 may be disposed above and below the area where the particles 120 are disposed, respectively. In addition, the screen members 170 and 180 include a first screen member 170 that prevents the particles 120 from escaping and a second screen member 180 that performs a filter function to filter out foreign substances contained in the fluid. can be distinguished. At this time, the fluid permeability of the first screen member 170 may be higher than the fluid permeability of the second screen member 180. Additionally, the thickness of the first screen member 170 may be thinner than the thickness of the second screen member 180.

The screen members 170 and 180 may have elasticity and may press the plurality of particles 120 from at least one of the upper and lower sides. Through this, the particles 120 can be arranged more stably, and thus the functions described above can be performed more efficiently. The screen members 170 and 180 may be sponge, non-woven fabric, fiber, glass wool, ceramic filter, metal filter, etc. The arrangement position, thickness, and number of the screen members 170 and 180 are not particularly limited.

The rotating part 140 functions to move the particles 120 inside the chamber 110. The rotating part 140 may be rotated by fluid flowing into the inlet. The rotating part 140 includes a propeller 141 rotating by the fluid, a rotating shaft 142 that is the axis around which the propeller 141 rotates, and the plurality of particles 120 by rotation of the rotating shaft 142. It includes a moving member 143 that moves.

The propeller 141 may be shaped to receive a blow from the fluid supplied into the chamber 110 from the inlet 130. For example, it may have a plate or wing shape extending laterally from the rotating shaft 142 (see FIGS. 2 to 4). The shape and number of the propellers 141 are not particularly limited. The propeller 141 may be placed above the area inside the chamber 110 where the particles 120 are placed. Referring to FIGS. 2, 3, and 5, the internal space of the chamber 110 may be divided into a first region where particles 120 are disposed and a second region disposed on the second region, and the The propeller 141 may be placed in the second area. In this case, screen members 170 and 180 may be disposed between the first and second areas. Through this, the particles 120 can be prevented from moving to the second area. By arranging the propeller 141 and the particles 120 in this way, it is possible to prevent the propeller 141 from rotating due to resistance caused by the particles 120. Additionally, it is possible to prevent the fluid flowing in from the inlet 130 from being interfered with by the particles 120.

The rotating shaft 142 is a component to which the propeller 141 and the moving member 143 are connected. When the propeller 141 is hit by the fluid, the rotating shaft 142 may rotate, and the moving member 143 may rotate accordingly. Referring to FIGS. 3 and 5 , the rotating shaft 142 may be disposed penetrating the first to second regions. In this case, the screen members 170 and 180 may include a hollow interior through which the rotation shaft 142 passes. The rotating shaft 142 is connected to the upper and lower plates of the chamber 110 and can rotate, but its shape and arrangement position are not particularly limited.

The moving member 143 may rotate as the rotating shaft 142 rotates to move the particles 120. The moving member 143 may be disposed in the first area. If the particles inside the chamber do not move and are stably disposed, the fluid flowing into the chamber may move along a certain path and be discharged to the outside. In this way, when the path through which the fluid flows is specified and does not change, the microscopic vibrations that occur between particles placed in the path are reduced, which reduces nanobubble generation efficiency, and the problem of damage or contamination due to the continuous use of only specific particles. may occur. The nanobubble generator 100 according to an embodiment of the present invention can solve this problem through the moving member 143.

3 to 5, the moving member 143 includes at least one wing member 143a extending from one side of the rotating shaft 142, and the rotating shaft 142 rotates. In this case, the plurality of particles 120 can be moved by rotating the wing member 143a. At this time, the wing member 143a may be at least one and may include a surface in contact with the particle 120. Referring to FIG. 4, the wing member 143a may have a plurality of wings arranged in several layers. The shape and number of the wing members 143a are not particularly limited.

Referring to FIGS. 8 to 11 , in another embodiment, the moving member 143 may include a partition member 143b that divides the area where the plurality of particles 120 are arranged into at least two areas. The partition member 143b is connected to and disposed on one side of the rotating shaft 142, and when the rotating shaft 142 rotates, the partition member 143b rotates to move the plurality of particles 120. there is.

The partition member 143b may be made of a material or shape capable of blocking fluid from flowing to each area, as shown in FIG. 11 . Through this, the fluid flowing in through the inlet can be allowed to flow only to a specific area among the areas created by the partition member 143b. In this case, because the propeller 141 rotates due to the introduced fluid, the path through which the fluid flows through the first region may change according to a certain cycle. Through this, nanobubble generation efficiency can be reduced and the particles 120 can be prevented from being damaged or contaminated.

Referring to FIG. 9, the partition member 143b may be arranged from the bottom to the top of the first area, but may be arranged to cover only part of the first area.

In one embodiment, it may further include a liquid supply member for supplying liquid to the inlet 130 and a gas supply member for supplying gas into the liquid (not shown). The liquid supply member serves to supply liquid into the chamber 110. The liquid supply member is not particularly limited as long as it is used to transport liquid. The liquid supply member may transfer liquid including any one of a reciprocating pump, a rotary (rotating) pump, a centrifugal pump, an axial flow pump, and a friction pump. The liquid supply member may further include a liquid supply source for storing liquid, and may further include a valve for controlling the transfer of the liquid and a flow meter for measuring the transfer amount of the liquid. The liquid supplied by the liquid supply member is not particularly limited. For example, in order to be applied to hydroponic cultivation, raw water may contain a culture solution containing nutrients necessary for plant growth. The placement position of the liquid supply member is not particularly limited as long as it can supply fluid from the liquid supply source 150 to the chamber 110.

The gas supply member performs the function of injecting gas into the liquid supplied from the liquid supply member. The gas is not particularly limited and may be, for example, air, oxygen, and ozone.

Referring to FIGS. 6 and 7 , the nanobubble generator 100 according to an embodiment of the present invention may further include a gas supply unit 160 that supplies gas into the chamber 110 in addition to the configuration described above. In Figure 7, arrows indicate the flow of fluid and gas.

The gas supply unit 160 functions to introduce gas into the chamber 110. The gas flowing in through the gas supply unit 160 may hit the propeller 141 and provide power so that the propeller 141 can rotate easily. Additionally, the introduced gas may be used to generate nanobubbles by passing through the particles 120. Additionally, the introduced gas can be used to dry the inside of the chamber 110. The inside of the chamber 110 and the particles 120 may need to be cleaned as needed, and need to be kept dry when stored for a long period of time.

The present invention is not limited by the above-described embodiments and attached drawings, but is intended to be limited by the attached claims. Accordingly, various forms of substitution, modification, and change may be made by those skilled in the art without departing from the technical spirit of the present invention as set forth in the claims, and this also falls within the scope of the present invention. something to do.

100: Nanobubble generator, 110: Chamber, 120: Particles, 130: Inlet, 140: Rotating part, 141: Propeller, 142: Rotating shaft, 143: Moving member, 143a: Wing member, 143b: Bulkhead member, 150: Discharge Part, 160: gas supply pipe, 170: first screen member, 180: second screen member

Claims (4)

chamber;
a plurality of particles disposed inside the chamber;
an inlet that introduces fluid into the chamber;
A rotating part including a propeller rotating by the fluid, a rotating shaft on which the propeller rotates, and a moving member that moves the plurality of particles by rotation of the rotating shaft; and
It includes a discharge part that discharges the fluid inside the chamber to the outside,
The moving member includes a partition member dividing the area where the plurality of particles are arranged into at least two areas,
The partition member is connected to and disposed on one side of the rotating shaft,
When the rotating shaft rotates, the partition rotates to move the plurality of particles, prevents the fluid flowing in from the inlet from moving to a neighboring area, and prevents the fluid flowing in from the inlet from moving between the plurality of particles. Changing the flow path,
Nano bubble generator.
According to paragraph 1,
The moving member is disposed inside the area where the plurality of particles are arranged,
The moving member includes at least one wing member extending from one side of the rotating shaft,
When the rotating shaft rotates, the wing member rotates to move the plurality of particles,
Nano bubble generator.
delete According to paragraph 1,
Further comprising a gas supply pipe supplying gas into the chamber,
Nano bubble generator.