KR20220056385A - Nano Bubble Generator - Google Patents

Abstract

In accordance with the present invention, a nanobubble generation apparatus is provided. In order to be properly used for a service provision business supposed to use a large amount of water such as a restaurant, a public sauna, a laundry cleaner or the like through structural simplification or miniaturization, the nanobubble generation apparatus includes: an apparatus body having a space part formed therein; a raw water pipe provided in the apparatus body and formed to receive raw water from the outside of the apparatus body; a pressure pump provided in the apparatus body, spatially connected with the raw water pipe, and forming transfer pressure to the raw water by forcibly pumping the raw water with power supplied through the control of a control means provided to control power of a power supply part; a melting bath provided in the apparatus body, having an inlet spatially connected with an outlet of the pressure pump to receive mixed water having the transfer pressure and an outlet provided to discharge the water to the outside, and having a melting space sealed from the outside between the inlet and the outlet to form melting pressure of gas for the water; a drainpipe provided in the apparatus body and spatially connected with the outlet of the melting bath to drain nanobubble water produced in the melting bath to the outside; and a connection pipe placed between the pressure pump and the inlet of the melting bath to receive air from the outside and mix the air with the raw water during the procedure in which the raw water pumped by the pressure pump is supplied to the melting bath while flowing via the same.

Description

Nano Bubble Generator

The present invention relates to a nanobubble generating device for generating nanobubbles, which are microbubbles having a micro-unit in diameter, and more particularly, to a mixed water in which water (raw water) and air are mixed while being transported while passing through a dissolution space. As the gas is dissolved in water (raw water) to be nano-sized, it is possible to generate nano-bubble water as well as economical and space-saving, especially in service establishments that use a large amount of water such as restaurants, bathrooms, and laundries through structural simplification and miniaturization. It relates to a nanobubble generator that can be used efficiently and appropriately.

In general, nanobubbles are ultrafine bubbles that cannot be seen with the naked eye. They are microscopic air particles less than 25㎛ in the pores of the skin with a size of 1/2000 of a normal bubble. It generates a high sound pressure of 140db, and 3) instantaneous high heat of 4,000 to 6,000 degrees is generated.

In other words, normal bubbles rise in water and burst on the surface, but nanobubbles are reduced by pressure in the water, generating various energy and disappearing.

These nanobubbles are microscopic bubbles that occur mainly when water and air are violently rotated.

Such nanobubbles are being utilized in various fields due to their physical and chemical properties such as "gas dissolution effect, self-pressurization effect, and electrification effect". In the medical field, it is used for precise diagnosis, and in various fields, it is used for physical therapy, high-purity water treatment, and environmental devices.

In other words, it has a wide range of uses, from hot spring baths to cancer diagnosis, and is known to regenerate the skin as well as to have an excellent sterilization effect.

Nanobubbles as described above are generated in various ways, such as a swirling liquid flow type, a state mixer type, an ejector type, a venturi type, a pressure dissolution type, an ultrasonic type, an electrolysis type, and a micropore filter type.

In order to generate nanobubbles through various types of nanobubble generating facilities or devices, a liquid (feed water) mixed with gas is supplied, and the gas is converted into microbubbles to generate nanobubbles.

The process in which the feed water is converted into microbubbles is made through a process in which the feedwater containing air bubbles (a mixture of water and air) is separated and compressed while passing through the microtubules of the generating means provided with the microtubules.

As one of the nanobubble generators that generate nanobubbles as described above, there is Korean Patent Registration No. 10-1146040 (name: nanobubble generator), and the nanobubble generator is, as described in the publication, A bubble generating chamber provided with a water inlet through which water is introduced, an air inlet through which air is introduced, and an outlet through which air is discharged, is provided between the water inlet and the air inlet and the outlet of the bubble generating chamber and is rotated by being inserted into the shaft of the motor and rotated through the water inlet and a rotating disk provided with a plurality of guide holes through which water introduced through the air inlet is guided, and provided to be in close contact with the moving direction of water and air of the rotary disk, the water and air induced through the guide holes are branched outward It consists of a fixed disk provided with a plurality of stirring pieces protruding in the direction of the rotating disk to stir water and air according to the rotation of the rotating disk at the same time.

Accordingly, water and air are not only stirred while rubbing with the stirring pieces, but also rubbed while passing between the stirring pieces with a jig jack, so that the water and air are strongly stirred and compressed at the same time as if crushed.

Such an impact-type microbubble generator not only requires a high pressure of 5 to 20 bar, but also has a large flow loss, and requires a large number of nozzles and a large mixing tank, thereby complicating the structure and equipment of the device. .

On the other hand, the swirling liquid flow type microbubble generator generates nanobubbles through the conveying pressure introduced in the process of conveying the mixed water mixed with water and air through the space in a spiral shape, like the impact type nozzle method. Nanobubbles are generated by the vortex pressure generated while the mixed water is transported while forming a vortex by forming a vortex-type pipe.

However, the device for generating microbubbles of the swirling liquid flow method has a problem in that it cannot generate microbubbles through a single nozzle and requires a high pressure as well as a bulky mixing tank.

Recently, a dissolution means provided with a dissolution space (A) configured to form a dissolution pressure of air inside; nano-bubbles are generated by dissolving air contained in a mixture of water and air supplied from the outside. A bubble generating system is being proposed.

That is, according to the continuous increase of the air pressure in the dissolution space (A) according to the supply of the mixed water, the dissolution pressure at which the dissolution of the air remaining in the dissolution space occurs is generated.

Accordingly, the nanobubble water is smoothly formed according to the generation of mixed water according to the mixing of raw water (tap water) and air in the dissolution space and the dissolution of air contained in the mixed water.

' 형상을 가지는 용해통;을 포함하여 이루어지는 나노버블발생장치가 기재되어 있다.In Korea Patent Registration No. 10-2128207 (name: nano bubble generator), as is known in the publication, the mixed water in which water and air are mixed has a supply port and a discharge port for discharging to the outside while having a conveying pressure. , Doedoe comprising a dissolution means provided with a dissolution space sealed to the outside between the supply port and the discharge port to form a dissolution pressure of the gas to water; The dissolution means, in a state in which the inlet of the supply port is arranged on the outer surface, the outlet of the supply port is arranged on the upper surface, the supply pipe through which the mixed water is supplied from the outside is connected to discharge to the upper surface, and the inlet of the outlet on the upper surface is In the disposed state, the outlet of the discharge port is disposed on the outer surface, the dissolution body is connected to a discharge pipe through which the mixed water is discharged from the outside and discharged to the outside; The lower part is opened and the open lower part is assembled while being bound to the upper part of the dissolution body, and has the dissolution space therein to form a dissolution pressure with respect to the mixed water supplied through the outlet of the supply port, and the cross-sectional shape is '

' A dissolving barrel having a shape; a nano-bubble generating device comprising the is described.

Korean Patent Registration No. 10-1146040 Korean Patent Registration No. 10-2128207

However, the conventional nano-bubble generating devices as described above, in service establishments such as restaurants and laundries where a large amount of water is used, could not be properly applied, so there was a problem in usability.

The present invention has been proposed to solve the problems of the prior art, and an object of the present invention is that the gas contained while passing through the dissolution space while the mixed water in which water (raw water) and air are mixed is transferred is water (raw water) ) to generate nano-bubble water as it is dissolved in nano, and in particular, it is economically and space-efficiently suitable for service establishments that use a large amount of water such as restaurants, bathrooms, lodging establishments, and laundry facilities through structural simplification and miniaturization. It is to provide a nano-bubble generating device that can be used conveniently.

Nanobubble generating device according to the present invention for achieving the object of the present invention as described above, the device body having a space formed therein; a raw water pipe provided inside the device body and configured to receive raw water from the outside of the device body; A pressure pump provided inside the device body, spatially connected to the raw water pipe, receiving power through the control of a control means configured to control the power supply of the power supply unit, and forcibly pumping raw water to form a conveying pressure in the raw water. Wow; It is provided inside the device body and is spatially connected to the outlet of the pressure pump and has a supply port through which mixed water having a conveying pressure is supplied and a discharge port for discharging to the outside. a dissolution tank provided with a dissolution space configured to form a dissolution pressure of the gas; a drain pipe provided inside the device body and spatially connected to the discharge port of the dissolution tank to drain the nano-bubble water generated inside the dissolution tank to the outside; A connection pipe disposed between the pressure pump and the supply port of the dissolution tank to receive external air while being supplied to the dissolution tank while passing through the raw water pumped by the pressure pump to mix air with the raw water; Nano including a In the bubble generator; The connection pipe is provided with a vacuum pressure forming space in which the inner diameter gradually decreases and then increases on the movement path of the raw water provided therein, and a local vacuum pressure is formed by the supply pressure of the raw water supplied from the pressure pump. , characterized in that an air supply hole for spatially connecting the vacuum pressure forming space and the outside is formed.

The connection pipe is provided with an inlet that is spatially connected to the outlet of the pressure pump to receive raw water at one end, and a supply port that is spatially connected to the dissolution tank to supply raw water to the dissolution space at the other end. , Between the inlet and the supply port, the connection body having a movement path through which the raw water is moved; Doe including; In the connection body, the movement path is provided with a vacuum pressure forming space in which the inner diameter is gradually reduced and then increased to form a local vacuum pressure by the supply pressure of the raw water supplied from the pressure pump, and the vacuum pressure forming space is provided. It is characterized in that the air supply hole for spatially connecting the space and the outside is formed.

The nano-bubble generating device according to the present invention made as described above, while supplying the raw water supplied through the raw water pipe to a high pressure through the pressure pump, is transferred to the dissolution tank, the external air is sucked through the connection pipe and mixed with the raw water. After the mixed water is supplied to the dissolution tank in a formed state, the contained gas is dissolved in the raw water while passing through the dissolution space to generate nano-bubble water to be nano-sized. It has the effect of being suitably used in service establishments that consume a large amount of water, such as a business or laundry.

In addition, by spatially connecting the pressure pump and the dissolution tank at both ends of the connection body of the connection pipe, the raw water pressurized to high pressure is supplied to the dissolution space, as well as the raw water on the movement path of the raw water formed inside the connection body. The vacuum pressure generated in the vacuum pressure forming space is formed by the moving pressure, and external air is sucked inside through the air supply hole and mixed with the raw water, so the air consumed when the nanobubbles are generated is removed without a separate air supply device. It has the effect of providing a stable supply.

Accordingly, it has the effect of maximizing economic benefits and space use efficiency through structural simplification.

1 is a schematic illustration showing a nano-bubble generating device according to an embodiment according to the present invention.
Figure 2 is a schematic illustration of some excerpts showing the use state of the nano-bubble generator according to the present embodiment.
3 to 8 is a schematic illustration of some excerpts showing a connector constituting the nano-bubble generating device according to the present embodiment.
9 is a schematic exemplary view showing the control state of the nano-bubble generator according to the present embodiment.

Hereinafter, with reference to the accompanying drawings, a nano-bubble generating device according to a preferred embodiment according to the present invention will be described in detail as follows.

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

1 to 9 are views showing a nano-bubble generator 1 according to an embodiment according to the present invention. The nano-bubble generator 1 according to this embodiment has a mixed water in which raw water and air are mixed. After being formed, air is dissolved in raw water in the dissolution space (A) to generate nano-bubble water as it is nano-sized. , bathrooms, lodging establishments, laundry, etc., are designed to be applied appropriately in service establishments where a large amount of water is consumed.

That is, the raw water supplied through the raw water pipe 100 to which raw water (including tap water) is supplied is connected to the unillustrated raw water supply facility (including water supply equipment) to the dissolution space (A) according to the user's choice. .

At this time, as the water pressure in the dissolution space (A)) is continuously increased according to the continuous supply of the mixed water, a dissolution pressure for air is generated by the high pressure water pressure in the dissolution space (A).

Accordingly, nanobubble water is smoothly formed according to the generation of mixed water according to the mixing of raw water and air in the dissolution space (A) and the dissolution of air contained in the mixed water.

In the above, the raw water pipe 100 may include a 'water supply pipe' connected to a water pipe and/or a 'water valve' connected to the water supply pipe; It may consist of a 'water supply pipe' connected to a separate water supply device such as a 'water purifying device' and/or a 'water valve' connected to the water supply pipe, and is preferably applied according to the user's selection.

The nano-bubble generating device 1 according to this embodiment includes a device body 2 having a space formed therein; the raw water pipe 100 provided inside the device body 2 and supplied with raw water from the outside of the device body 2; It is provided inside the device body 2, is spatially connected to the raw water pipe 100, and receives power through the control of the control means 22 to control the power of the power supply unit 21 to forcibly pump raw water. a pressure pump (3) configured to form a conveying pressure in the raw water; A supply port 41 provided inside the device body 2 and spatially connected to the outlet 31 of the pressure pump 3 to supply mixed water having a conveying pressure and a discharge port 42 for discharging to the outside. and a dissolution tank 4 provided with the dissolution space A which is sealed to the outside between the supply port 41 and the discharge port 42 to form a dissolution pressure of the gas in water. .

That is, by driving the pressure pump 3 under the control of the control means 22 inside the device body 2 to boost the raw water supplied through the raw water pipe 100 to the dissolution tank 4 . will supply

At this time, the mixed water supplied to the supply port 81 of the dissolution tank 4 moves through the dissolution space A of the dissolution tank 4 by the transfer pressure applied to the raw water through the pressure pump 3 . As the air contained in the mixed water is dissolved and nano-sized through the dissolution pressure formed in the dissolution space (A) in the process of being used, nano-bubble water is generated and discharged through the discharge port 42 to be provided to a place not shown. .

In the above, the device body 2 may have a 'hexahedral' shape made of a 'metal material'; The power supply unit 21 may be formed of a 'power connection terminal' that is connected to an external power line, and is preferably applied according to a user's selection.

In the device body (2), the operation button is provided so as to be exposed to the outside of the main body, the operation means (23) to control the driving state of the pressure pump (3); may be provided.

That is, as the driving cycle and driving time of the pressure pump 3 are selectively manipulated and set through the operation means 23, a suitable increase in the pressure of the raw water is formed and supplied according to the use of the nanobubble water. can

In the device body (2), the main switch (24) for adjusting the electrical connection state between the power supply unit (21) and the control means (22) is provided; If necessary, the power of the power supply unit 21 may be supplied to the control means 22 .

In the device body (2), a pressure gauge (25) is provided to externally display the feed pressure of raw water pressurized through the pressure pump (3); It may be possible to recognize the feed pressure of raw water with the naked eye from the outside.

' 형상을 가지는 용해통(44);을 포함하여 이루어진다.On the other hand, in the dissolution tank 4 in the above, in a state in which the inlet of the supply port 41 is arranged on the outer surface, the outlet of the supply port 41 is arranged on the upper surface, and the pressure pump 3 to which the mixed water is supplied from the outside ) and is spatially connected to discharge to the upper surface, and the outlet of the discharge port 42 is disposed on the outer surface in a state where the inlet of the discharge port 42 is disposed on the upper surface, so that the mixed water is discharged from the outside (43) Wow; The dissolution space (A) in which the lower part is opened and the open lower part is assembled while being bound to the upper part of the dissolution body (43) to form a dissolution pressure with respect to the mixed water supplied through the outlet of the supply port (41) therein ) and the cross-sectional shape is '

' The melting tank 44 having a shape;

That is, the mixed water supplied through the supply port 41 of the dissolution body 43 is supplied to the dissolution space A while colliding with the inner circumferential surface of the dissolution vessel 44 and moves to the discharge port 42 . As the gas contained in the mixed water is dissolved and nano-sized through the dissolution pressure formed in the dissolution space (A), nano-bubble water is generated and then supplied to the place of use through the discharge port (42).

In the dissolution body 43, the discharge port 42 is pipe-connected so that one end of the 'connection pipe 45' made of a 'pipe'-shaped 'pipe' is spatially connected; At the other end of the connection pipe 45, the supply port 41 of the dissolution body 43 is spatially connected to the other end; The supplied mixed water may be nanobubbled while passing through each of the pair of dissolution spaces (A) connected in series to each other to improve nanobubble generation efficiency and nanobubble quality.

At the outlet of the supply port 41 from the upper surface of the dissolution body 43 in the above, the mixed water has a vertical length and has a conveying pipe through which the mixed water is transferred therein to the upper surface of the dissolution tank 44 An injection pipe 46 configured to apply a collision pressure by spraying may be coupled and provided.

That is, the mixed water supplied to the dissolution space (A) through the supply port (81) is supplied to the dissolution space (A) via the injection pipe (86) bound to the binding pipe (87).

At this time, the mixed water is not only sprayed by the injection pipe 86, but also collides with the upper inner circumferential surface of the dissolution vessel 84 forming the dissolution space A, and is applied with a collision pressure to form nano-bubbles.

The melting tank 44 in the above is made of a 'transparent material' that can be recognized by projecting the inside from the outside with the naked eye; It may be possible to recognize the nano-bubbling process of the mixed water from the outside.

The nano-bubble generating device 1 according to the present embodiment made as described above is provided inside the device body 2 and is spatially connected to the discharge port 42 of the dissolution tank 4 inside the dissolution tank 4 . A drain pipe 200 configured to drain the nano-bubble water generated in the outside; It is disposed between the pressure pump 3 and the supply port 41 of the dissolution tank 4 and supplies external air while the raw water pumped by the pressure pump 3 passes through and is supplied to the dissolution tank 4 . A connection pipe (5) to receive and mix the air with the raw water; is made including.

That is, the raw water having the transport pressure boosted through the pressure pump 3 through the connection pipe 5 is spatially connected to be supplied to the dissolution tank 4 provided with the dissolution space A, and the dissolution space After the raw water is supplied to (A) and nano-bubbled, it is supplied to the place of use through the drain pipe 200 .

In the nano-bubble generating device 1 according to this embodiment made as described above, the connecting pipe 5 is increased after its inner diameter is gradually decreased on the movement path of the raw water provided therein, and the pressure pump 3 ) is provided with a vacuum pressure forming space (B) in which a local vacuum pressure is formed by the supply pressure of raw water supplied from the air supply hole (51) spatially connecting the vacuum pressure forming space (B) and the outside. It can be formed by

That is, when the raw water is supplied by the pressure pump 3 , a vacuum pressure is formed in the vacuum pressure forming space B by the moving pressure of the raw water.

Accordingly, external air is sucked in through the air supply hole 51 and supplied to the inside, mixed with raw water, and supplied to the dissolution tank 4 .

Therefore, it is possible to stably supply the air consumed when the nano-bubbles are generated in the dissolution space (A) without a separate air supply device; In particular, economic benefits and space use efficiency are maximized through structural simplification.

In the above, the vacuum pressure forming space (B) is formed in a portion having a reduced and enlarged shape on the movement path, and in a space having a reduced diameter according to 'Pascal's principle' and 'Bernoulli's theorem' 'Cavitation (cavitation)' occurs.

That is, the vacuum pressure forming space (B) is formed naturally when the raw water moves, and accordingly, a vacuum suction force to the air supply hole 51 is generated, and external air is naturally supplied.

In the nanobubble generating device according to this embodiment made as described above, the connecting pipe 5 has an inlet 521 that is spatially connected to the discharge pipe 31 of the pressure pump 3 at one end to receive raw water. The other end is provided with an outlet 532 spatially connected to the dissolution tank 4 to supply raw water to the dissolution space A, and between the inlet 521 and the outlet 522 . may include; a connection body 52 having a movement path through which the raw water is moved.

That is, the pressure pump 3 and the dissolution tank 4 are respectively connected to the inlet 521 and the outlet 522 provided at both ends of the connection body 52 to be spatially connected.

Accordingly, the raw water pressurized by the pressure pump 3 is supplied to the dissolution space (A).

In the above, the inlet 521 and the outlet 522 may be connected while being screwed to the outlet pipe 31 of the pressure pump 3 and the inlet 41 of the dissolution tank 4, respectively, the user It is preferable to be appropriately applied according to the selection of

To this end, the inlet 521 and the outlet 522 may be integrally formed with a 'screw part' of a 'screw shape'.

On the other hand, in the nano-bubble generating device 1 according to the present embodiment, the movement path of the connection body 52 is increased after its inner diameter is gradually reduced to supply raw water supplied from the pressure pump 3 . The vacuum pressure forming space (B) in which a local vacuum pressure is formed by the pressure is provided, and the air supply hole 51 spatially connecting the vacuum pressure forming space (B) and the outside may be formed.

That is, as the vacuum pressure is formed in the vacuum pressure forming space (B) by the moving pressure of the raw water when the raw water is supplied from the pressure pump 3 , external air is discharged through the air supply hole 51 . It is supplied to the inside while being sucked and mixed with the raw water, and is supplied to the dissolution space (A).

In the above connection body 52, the inlet 521 and the outlet 522 provided at both ends are formed, and the inside is formed of a 'pipe'-shaped 'pipe'; The air supply hole 51 may be formed so as to spatially connect while penetrating the outside of the connection body 52 and the vacuum pressure forming space B, respectively.

That is, the connection body 52 can be made of a design structure suitable for mass production through a molding process, so that it can be provided economically.

In the nano-bubble generating device 1 according to this embodiment made as described above, the connection pipe 5 is connected while being connected to the air supply hole 51 from the outside of the connection body 52, and the vacuum pressure Depending on whether or not vacuum pressure is formed in the forming space (B), the one-way check valve 53 configured to open and close the supply of air may be connected while being connected.

That is, when raw water is supplied from the eye pump 3, when a vacuum pressure is formed in the vacuum pressure forming space (B) by the moving pressure of the raw water, the one-way check valve 53 is opened and the external air is released from the air. It is supplied to the vacuum pressure forming space (B) via the supply hole (51) and mixed with raw water, and then supplied to the dissolution space (A).

In addition, according to the user's selection, when the supply of raw water from the pressure pump 3 is stopped, the vacuum pressure is released in the vacuum pressure forming space (B), and the mixed water flowing backward in the dissolution space (A) is added. As the one-way check valve 53 is closed by this, leakage to the outside does not occur.

Accordingly, a stable supply of air is made naturally, and leakage of raw water or/and mixed water from the air supply hole 2 to the outside is prevented, thereby realizing stability.

On the other hand, in the nanobubble generating device 1 according to the present embodiment, the connection pipe 5 is connected while being spatially connected to the air supply hole 51 from the outside of the connection body 52, and is connected from the outside. A control valve 54 configured to control the amount of movement per unit time of the air moved to the air supply hole 51 may be provided.

That is, when the vacuum pressure is formed in the vacuum pressure forming space (B) through the control valve 54 and external air is supplied to the air supply hole 51 via the one-way check valve 53, As the air supply amount is selectively adjusted to form a suitable air pressure in the dissolution space (A), a suitable nano-bubble generation environment can be formed while being tailored to the supply environment of the raw water supplied from the pressure pump (2). .

Accordingly, the nano-bubble generation environment can be selectively adjusted by the user, so that the quality of use can be improved.

In the above, the control valve 54 may be provided connected between the air supply hole 51 and the one-way check valve 53; Each of the air supply hole 51, the control valve 54, and the one-way check valve 53 has a length and each connection tube 55 formed in a 'pipe' shape through which both ends are penetrated. ) can be spatially connected by

That is, by selectively adjusting the length of the connection tubes 55, the arrangement of the control valve 54 and the one-way check valve 53 in the entire occupied space can be selectively positioned, thereby increasing the space use efficiency. can be done

One embodiment of the present invention described above is merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. . Therefore, it will be well understood that the present invention is not limited to the form mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. Moreover, it is to be understood that the present invention covers all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

1: nano bubble generator 100: raw water pipe
200: drain pipe 2: device body
21: power supply 22: control means
23: operation means 24: main switch
25: pressure gauge 3: pressure pump
31: discharge pipe 4: dissolution tank
41: supply port 42: discharge port
43: melting body 44: melting tank
45: connection pipe 46: injection pipe
5: connector 51: air supply hole
52: connection body 521: inlet
522: exit 53: one-way check valve
54: control valve 55: connection tube
A: Melting space B: Vacuum pressure forming space

Claims (2)

a device body having a space formed therein; a raw water pipe provided inside the device body and configured to receive raw water from the outside of the device body; A pressure pump provided inside the device body, spatially connected to the raw water pipe, and receiving power through the control of a control means configured to control the power supply of the power supply unit to forcibly pump raw water to form a conveying pressure in the raw water. Wow; It is provided inside the device body and is spatially connected to the outlet of the pressure pump and has a supply port through which mixed water having a conveying pressure is supplied and a discharge port for discharging to the outside. a dissolution tank having a dissolution space configured to form a dissolution pressure of the gas; a drain pipe provided inside the apparatus body and spatially connected to the discharge port of the dissolution tank to drain the nano-bubble water generated inside the dissolution tank to the outside; A connection pipe disposed between the pressure pump and the supply port of the dissolution tank to receive external air while being supplied to the dissolution tank while passing through the raw water pumped by the pressure pump to mix air with the raw water; Nano including a In the bubble generator;
The connector is
A vacuum pressure forming space is provided in which the inner diameter gradually decreases and then increases on the movement path of the raw water provided therein to form a local vacuum pressure by the supply pressure of the raw water supplied from the pressure pump, and the vacuum pressure forming space is provided. Nanobubble generator, characterized in that the air supply hole for spatially connecting the space and the outside is formed.
The method of claim 1 ;
The connector is
One end is provided with an inlet that is spatially connected to the outlet of the pressure pump to receive raw water, and the other end is provided with a supply port that is spatially connected with the dissolution tank to supply raw water to the dissolution space, the inlet and the A connection body having a movement path through which the raw water moves between the supply ports; doe including;
The movement path in the connection body,
A vacuum pressure forming space is provided in which the inner diameter is gradually decreased and then increased to form a local vacuum pressure by the supply pressure of the raw water supplied from the pressure pump, and the vacuum pressure forming space and the outside are spatially connected An air supply hole is formed so that, when the raw water is supplied by the pressure pump, external air is supplied to the inside through the air supply hole to be mixed with the raw water.

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