KR102273983B1 - Portable type apparatus for activating a media including the nozzle - Google Patents

Abstract

A portable medium activating device is disclosed. A portable medium activating device is a device that an operator can carry, comprising: a housing wearable on the body of the operator; a protective mask placed on the worker's head; a medium storage tank provided in the housing to store a liquid medium; a first air supply unit provided in the housing and supplying air to the protective mask; a nozzle for spraying the liquid medium supplied from the medium storage tank in a droplet or mist state; and an activation gas generator generating an activation gas from the outside of the nozzle, wherein the activation gas is introduced into the front of the nozzle by the spray pressure of the nozzle to activate the medium in the droplet or mist state.

Description

Portable type apparatus for activating a media including the nozzle}

FIELD OF THE INVENTION The present invention relates to a medium activating device, and more particularly to a portable medium activating device.

In general, hospitals, laboratories, good manufacturing practices (GMP, Good Manufacturing Practice), animal breeding facilities, biological safety such as BSL-3, Biological Safety Level-3, aseptic preparation of food and pharmaceuticals, etc. In manufacturing facilities, internal laboratories and production rooms are required to maintain clean, sterile conditions. This sterilization means a high level of treatment in that it completely removes all kinds of living microorganisms through physical and chemical action, unlike cleaning or disinfection.

A method using an activated medium as such a sterilization method has been tried. In this method, the medium is sprayed with a high injection pressure, and a high voltage of about 17,000 V to 20,000 V is applied to the area where the medium is injected to activate the medium. However, in this method, since the medium passes through the electric field within a short time, it is difficult to sufficiently activate the medium.

Korean Patent Publication No. 10-2017-0093746 (published on August 16, 2017)

The present invention provides a portable medium activating device that can be moved and sterilized in various places.

The present invention also provides a portable medium activating device capable of activating a medium using ambient air.

A portable medium activating device according to the present invention is a device that an operator can carry, comprising: a housing that can be worn on the body of the operator; a protective mask placed on the worker's head; a medium storage tank provided in the housing to store a liquid medium; a first air supply unit provided in the housing and supplying air to the protective mask; a nozzle for spraying the liquid medium supplied from the medium storage tank in a droplet or mist state; and an activation gas generator generating an activation gas from the outside of the nozzle, wherein the activation gas is introduced into the front of the nozzle by the spray pressure of the nozzle to activate the medium in the droplet or mist state.

In addition, provided in the housing, the second air supply unit for supplying air to the activation gas generating unit may be further included.

In addition, the nozzle is made of a conductive material, the outer peripheral surface of the front end has an inclined surface that gradually decreases in diameter toward the front end, and the activation gas generator includes a dielectric film formed on the outer peripheral surface of the nozzle; a power electrode provided on the dielectric film; and a power source for applying power to the power electrode, wherein the nozzle may be grounded and portable.

In addition, the front end of the power electrode may be positioned between both ends of the inclined surface.

In addition, the activation gas generator may include: a dielectric tube having a space inside which the tip of the nozzle is inserted and having an inner diameter greater than that of the tip of the nozzle; a power electrode provided on an outer circumferential surface of the dielectric tube; a ground electrode spaced apart from the power electrode by a predetermined distance and provided on an outer circumferential surface of the dielectric tube; and an insulator film coated on an outer circumferential surface of the dielectric tube such that the power electrode and the ground electrode are positioned therein.

In addition, the nozzle has a first flow path having a first spray port and a second flow path having a second sub-sphere, the liquid medium is supplied to the first flow path, and the activation gas is supplied to the second flow path. It can be supplied in Euros.

According to the present invention, the operator can spray the activated medium to the surroundings while moving while carrying the medium activation device.

In addition, according to the present invention, the medium can be activated by activating the ambient air and mixing it with the medium in the form of droplets or mist.

1 is a diagram illustrating a portable activation device according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram schematically illustrating the portable activation device of FIG. 1 .
3 is a perspective view showing a medium spray gun according to an embodiment of the present invention.
Figure 4 is a cross-sectional view showing the medium spray gun of Figure 3;
5 is a perspective cross-sectional view illustrating a nozzle according to an embodiment of the present invention.
Fig. 6 is a front view of the nozzle of Fig. 5;
7 is a cross-sectional view showing a part of the nozzle of FIG. 5 .
8 is a cross-sectional view illustrating the activation gas generator of FIG. 4 .
9 is a diagram schematically illustrating a portable activation device according to another embodiment of the present invention.
10 is a view showing a medium spray gun according to another embodiment of the present invention,
11 is a diagram illustrating a nozzle and an activation gas generator according to an embodiment of the present invention.
12 is a view showing a nozzle and an activation gas generator according to another embodiment of the present invention.
13 is a diagram illustrating a nozzle and an activation gas generator according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical spirit of the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In this specification, when a component is referred to as being on another component, it may be directly formed on the other component or a third component may be interposed therebetween. In addition, in the drawings, thicknesses of films and regions are exaggerated for effective description of technical content.

In addition, in various embodiments of the present specification, terms such as first, second, third, etc. are used to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Accordingly, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes a complementary embodiment thereof. In addition, in the present specification, 'and/or' is used to mean including at least one of the elements listed before and after.

In the specification, the singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as "comprise" or "have" are intended to designate that a feature, number, step, element, or a combination thereof described in the specification is present, and one or more other features, numbers, steps, configuration It should not be construed as excluding the possibility of the presence or addition of elements or combinations thereof. Also, in the present specification, the term “connection” is used to include both indirectly connecting a plurality of components and directly connecting a plurality of components.

In addition, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a diagram illustrating a portable activation device according to an embodiment of the present invention, and FIG. 2 is a conceptual diagram schematically illustrating the portable activation device of FIG. 1 .

1 and 2 , the portable activation device 10 can be worn on the body of the operator 20 and sterilize the surroundings by supplying an activated medium to the surroundings while the operator 20 moves. In an embodiment, the medium comprises a sterilizing solution. The sterilizing solution may be provided in which hydrogen peroxide is contained in a small amount in water. Hydrogen peroxide may be contained in a low concentration of 7.5% or less. In addition, hydrogen peroxide may be contained in a concentration of 7.5% or 3.0%.

In addition, the medium may contain a first additive and a second additive.

The first additive is provided for the purpose of removing metal ions contained in the medium. The decomposition of hydrogen peroxide may be accelerated by a small amount of metal ions (ions such as Mn, Fe, Cu, Pb, Ag, and Pt) contained in the sterilizing solution. Therefore, it is necessary to stabilize the hydrogen peroxide by removing these metal ions. The first additive may be at least one selected from sodium pyrophosphate, magnesium sulfate, sodium silicate, citric acid, and diethylenetriaminepentaacetic acid (DTPA).

The second additive enhances the disinfection effect through combination with hydrogen peroxide. According to an embodiment, DTPA is used as the second additive. DTPA reacts with hydrogen peroxide to produce peracetic acid. Peracetic acid has an excellent microbial sterilization effect, does not form chlorine disinfection by-products, and can be decomposed in an environmentally friendly manner. In addition, it has a long shelf life of 12 to 18 months and minimizes pH and temperature dependence. And it has the advantage of being safe and easy to handle and store.

The portable ring activation device 10 can be worn on various body parts such as the back, waist, and legs of the operator 20 . In this embodiment, the activation device 10 will be described as being worn on the back of the operator 20 in a backpack type as an example.

The activation device 10 includes a housing 110 , a medium supply unit 120 , a protective mask 130 , a first air supply unit 140 , a second air supply unit 150 , and a medium spray gun 200 .

The housing 110 is configured to be worn on the body of the operator 20 , and a space is formed therein. A wearing belt 111 may be provided on the front surface of the housing 110 .

The medium supply unit 120 supplies a liquid medium to the medium spray gun 200 . The medium supply unit 120 includes a medium storage tank 121 , a medium supply line 122 , and a pump 123 .

The medium storage tank 121 is located inside the housing 110 and stores a liquid medium. The medium supply line 122 connects the medium storage tank 121 and the medium spray gun 200 . The pump 123 is provided on the medium supply line 122 inside the housing 110 , and supplies a liquid medium to the medium spray gun 200 .

The protective mask 130 is put on the head of the operator 20 , and blocks the main air from entering the respiratory tract of the operator 20 . The protective mask 130 protects the operator 20 by blocking the inflow of hydrogen peroxide contained in the sprayed medium into the respiratory tract.

The first air supply unit 140 supplies clean air to the inside of the protective mask 130 . The operator 20 can breathe clean air. The first air supply unit 140 includes a first compressor 141 , a first filter 142 , and a first air supply line 143 .

The first compressor 141 is provided in the housing 110 , compresses ambient air and supplies it to the first air supply line 143 . The first air supply line 143 connects the first compressor 141 and the protective mask 130 . The first filter 142 is provided on the first air supply line 143 , and filters particles included in the air supplied to the first air supply line 143 to generate clean air.

The second air supply unit 150 supplies air to the nozzle spray gun 200 . The second air supply unit 150 includes a second compressor 151 , a second filter 152 , and a second air supply line 153 .

The second compressor 151 is provided in the housing 110 , compresses ambient air and supplies it to the second air supply line 153 . The second air supply line 153 connects the second compressor 151 and the nozzle spray gun 200 . The second filter 142 is installed on the second air supply line 153 , and filters particles included in the air supplied to the second air supply line 153 .

Figure 3 is a perspective view showing a medium spray gun according to an embodiment of the present invention, Figure 4 is a cross-sectional view showing the medium spray gun of Figure 3, Figure 5 is a perspective cross-sectional view showing a nozzle according to an embodiment of the present invention , Figure 6 is a front view of the nozzle of Figure 5, Figure 7 is a cross-sectional view showing a part of the nozzle of Figure 5.

3 to 7 , the medium spray gun 200 includes a case 210 , a nozzle 220 , an activation gas generator 230 , and a laser generator 260 .

The case 210 has an internal space in which the components of the above-described medium spray gun 200 can be accommodated. In addition, the case 210 is provided with a handle 211 . The handle portion 211 is provided as an area that the operator 20 can hold by hand.

A first opening 212 and a second opening 213 are formed on the front surface of the case 210 . The first opening 212 is provided as a path through which the activated medium is sprayed to the outside, and the second opening 213 is provided as a path through which the laser light generated by the laser generator 260 is irradiated to the outside.

The nozzle 220 is located in the inner space of the case 210 , and the first passage 221 and the second passage 225 are separated therein.

The first flow path 221 is formed on the central axis of the nozzle 220 , and has a first spray hole 222 and a flow path reduction region 223 . The first spray port 222 is located at the end of the first flow path 221 . The flow path reduction region 223 communicates with the first spray hole 222 and the inner diameter gradually decreases as it approaches the first spray hole 222 . The flow path reduction region 223 may be provided in a conical shape.

The second flow path 225 has the same central axis as the first flow path 221 and is provided to surround the first flow path 221 . The second flow path 225 has a second spray hole 226 and a flow path slope region 227 . The second spray port 226 is located at the end of the second flow path 225 . The second atomizer 226 has a ring shape and has the same center as the first atomizer 222 . The second atomizer 226 is provided to surround the first atomizer 222 .

The flow path slope region 227 communicates with the second atomizer 226 , is inclined at a predetermined angle with respect to the central axis of the second atomizer 226 , and gradually increases in diameter toward the rear from the second atomizer 226 . increases The flow path slope region 227 is provided with a constant flow path width W from the second spray hole 226 to the rear side. Accordingly, the flow path slope region 227 has a funnel shape and is disposed to surround the flow path reduction region 223 .

An activation gas inlet 229 is formed on the outer surface of the nozzle 220 , and the activation gas inlet 229 communicates with the second flow path 225 .

The activation gas generator 230 is located in the inner space of the case 210 . The activation gas generator 230 generates an activation gas by activating air by applying an electric field. The activating gas may include ozone, nitrogen oxides, hydroxide base, carbon dioxide and carbon monoxide. Ozone, nitrogen oxide, hydroxyl base, etc. may be in a radical state.

8 is a cross-sectional view illustrating the activation gas generator of FIG. 4 .

4 and 8 , the activation gas generator 230 includes a first electrode tube 232 , a barrier 233 , a second electrode tube 234 , and first and second connection terminals 235 and 236 . , and a power source (not shown).

The first electrode tube 232 is a metal tube made of a conductive material, and is connected to the (+) pole of the power source through the first connection terminal 235 .

The barrier 233 is inserted inside the first electrode tube 232 , and a tip protrudes outward of the first electrode tube 232 . The barrier is provided by a tube made of dielectric material. According to an embodiment, the barrier 233 is at least one of polyimide (PI), polyethylene terephthalate (PET), polyethersulfone (PES), polytetrafluoroethylene (PTFE, Polytetrafluoroethylene), and polycarbonate (polycarbonate). It may be provided with any one material. Air supplied through the second air supply line 152 may flow in the inner space of the barrier 233 .

The second electrode tube 234 is a metal tube made of a conductive material, is spaced apart from the first electrode tube 232 by a predetermined distance, and is connected to the activation gas supply line 240 . The second electrode tube 234 is connected to the (-) pole of the power source through the second connection terminal 236 .

When power is applied from the power source, an electric field is generated between the first electrode tube 232 and the second electrode tube 234 , and the electric field activates air passing through the barrier 233 . According to the embodiment, it is possible to activate the air by applying a low power of 1 to 30 watts (W).

Among the regions of the second air supply line 153 , the region 153a connecting the second electrode tube 234 and the second flow path 225 of the nozzle 220 may be made of a dielectric material. According to an embodiment, the region 153a may be made of a polytetrafluoroethylene material. The material stably maintains the activation gas in a radical state.

The laser generator 260 is located in the case 210 and generates laser light. The laser light is irradiated to the outside of the case 210 through the second opening 213, and informs the user of the direction in which the activation medium is injected.

Hereinafter, an operation process of the aforementioned portable medium activating device will be described.

The operator 20 moves to the sterilization target area while wearing the housing 110 on the back and the protective mask 130 on the head.

With the operation of the medium activating device 10 , clean air is supplied into the protective mask 130 through the first air supply line 143 , and the liquid medium stored in the medium storage tank 121 is transferred to the nozzle 220 . Air is supplied to the first flow path 221 , and air is supplied to the activation gas generator 230 through the second air supply line 152 .

In the activation gas generator 230 , electric power is applied to the first electrode tube 232 and the second electrode tube 234 from the power source, and an electric field generated by the applied electric power is supplied to the inside of the barrier 233 . to activate The activation gas may include electrons, ozone in a radical state, nitrogen oxides, and hydroxide bases. The activation gas is supplied to the second flow path 225 of the nozzle 220 through the second air supply line 153a.

The liquid medium is sprayed in the form of droplets or mist at high pressure through the flow path changing region 223 and the first spray port 222 in the first flow path 221 .

The activation gas is injected to the outside through the flow path slope region 227 and the second spray hole 226 in the second flow path 225 . The area of the second flow path 225 through which the activation gas flows has a larger flow path width than the flow path slope area 227 . Therefore, the area of the second flow path 225 is provided as a buffer space in which the activation gas can be sufficiently filled.

When the area of the second flow path 225 is sufficiently filled with the activation gas, the activation gas moves along the flow path slope area 227 and is sprayed into the second spray hole 226 . The injected activation gas is introduced into the medium by the flow of the medium sprayed from the first spray port 222 .

Since the flow path slope region 227 has a constant flow rate, the activation gas may be introduced at a uniform flow rate and flow rate in the entire area of the second spray hole 226 .

The activating gas is sprayed towards the medium being atomized in the form of droplets or mist. Since the activation gas is sprayed obliquely from the ring-shaped second spray hole 226 toward the central axis of the first spray hole 222, it is sprayed so as to surround the entire spray area of the medium. Due to this, the medium in a droplet or mist state can be uniformly combined with the activation gas and diffuse into the atmosphere.

The activity of the medium in the droplet or mist state is improved by binding with the activating gas. By improving the activity of the medium, the sterilization power is increased. In particular, the medium in the form of droplets or mist is mainly combined with ozone radicals contained in the activation gas, so that the sterilization power may be further improved.

The activated medium diffuses into the atmosphere and sterilizes contaminants. The user may check the laser light irradiated from the laser generator 260 and supply the activated medium to the contaminated area.

9 is a diagram schematically illustrating a portable activation device according to another embodiment of the present invention.

Referring to FIG. 9 , unlike the embodiment of FIG. 2 , the activation device 10 includes one air supply unit 140 . In the air supply unit 140 , the first air supply line 143 and the second air supply line 144 are connected to one compressor 141 , and air is supplied with the protective mask 130 and the medium spray gun 200 , respectively. can supply

10 is a view showing a medium spray gun according to another embodiment of the present invention.

Referring to FIG. 10 , in the activation device according to an embodiment of the present invention, the second air supply line ( 153 in FIG. 2 and 144 in FIG. 9 ) for supplying air to the medium spray gun 300 is not provided. The medium spray gun 300 according to an embodiment of the present invention may be used as an activation gas by activating ambient air. The medium spray gun 300 includes a nozzle 330 and an activation gas generator 340 . The nozzle 330 sprays the medium in the form of droplets or mist. The activation gas generator 340 activates ambient air outside the tip of the nozzle 330 to generate the activation gas. The activation gas is introduced into the medium along the flow of ambient air generated during the atomization of the medium to activate the medium.

11 is a diagram illustrating a nozzle and an activation gas generator according to an embodiment of the present invention.

Referring to FIG. 11 , a flow path 331 is formed on a central axis of the nozzle 330 , and the flow path 331 is connected to the medium supply line 122 . The flow path 331 has a flow path reducing region 332 and a spray port 333 . The spray port 333 is located at the end of the flow path 331 . The flow path reduction region 332 communicates with the spray port 333 , and the inner diameter gradually decreases as it approaches the spray hole 333 . The flow path reduction region 332 may be provided in a conical shape.

The front end 335 of the nozzle 330 may have a diameter gradually decreasing toward the front end, so that the outer peripheral surface of the front end may be provided as an inclined surface. A thickness between the inner peripheral surface and the outer peripheral surface of the nozzle 330 may have a thickness of 0.3 to 0.7 mm. According to the embodiment, the thickness between the inner peripheral surface and the outer peripheral surface of the nozzle 330 may be 0.5 mm.

The nozzle 330 is provided with a conductive material. The nozzle 330 is grounded and serves as a ground electrode.

The activation gas generator 340 includes a dielectric layer 341 , a power electrode 342 , and a power source 233 .

The dielectric layer 341 is a dielectric material and may be coated on the outer circumferential surface of the nozzle 330 . The dielectric layer 341 may be coated over the entire outer peripheral surface of the nozzle 330 from the rear end to the front end.

The power electrode 342 may be provided on the dielectric film 341 . The power electrode 342 is provided with a predetermined width separately in the longitudinal direction of the nozzle 330 , and the front end 342a is located on an inclined surface between the front end and the rear end of the front end 335 of the nozzle 330 .

The power source 233 applies power to the power electrode 342 .

A liquid medium is supplied to the flow path of the nozzle 330 through the medium supply line 122 . The liquid medium is sprayed with a high pressure in a droplet or mist state 31 through the flow path change region 332 and the spray port 333 in the flow path 331 . In the spraying process of the medium, a negative pressure is formed around the spray port 333, and the surrounding air 32 is introduced by the negative pressure to the "? direction?" of the medium. In the vicinity of the nozzle 330, the outer peripheral surface of the nozzle 330 An air stream 32 is formed along the front area of the spray port 333 .

Meanwhile, when power is applied from the power source 233 , the activation gas 33 is generated in the boundary region of the front end 342a of the power electrode 342 . The activation gas 33 is generated by activating the surrounding air of the power electrode 342 with electrons, radical ozone, nitrogen oxide, hydroxide, and the like. The activating gas 33 flows into the front area of the spray port 333 along the air stream 32 around the nozzle 330 , and mixes with the medium 31 in the form of droplets or mist. The activity of the medium 31 in a droplet or mist state is improved by combining with the activating gas 33 . By improving the activity of the medium 31, the sterilization power is increased. In particular, the medium 31 in a droplet or mist state is mainly combined with ozone radicals contained in the activation gas 33, so that the sterilization power can be further improved.

12 is a view showing a nozzle and an activation gas generator according to another embodiment of the present invention.

Referring to FIG. 12 , the activation gas generator 340 includes a dielectric tube 341 , a power electrode 342 , an insulator film 345 , and a power source (not shown).

The dielectric tube 341 is a tube made of a dielectric material, and a space is formed therein. The nozzle tip 330a is positioned in the inner space of the dielectric tube 341 . The dielectric tube 341 has an inner surface facing the front end 330a of the nozzle and an outer surface provided in parallel with the inner surface. The inner surface of the dielectric tube 341 is inclined in the same direction as the inclined surface of the nozzle tip 330a. The inner surface of the dielectric tube 341 has a larger diameter than the front end 330a of the nozzle, and maintains a predetermined distance from the outer circumferential surface of the nozzle tip 330a.

The power electrode 342 is provided on the outer surface of the dielectric tube 341 and is connected to a power source.

An insulator film 345 is coated on the outer surface of the dielectric tube 341 so that the power electrode 342 is located inside. The insulator film 345 is coated on the entire area of the power electrode 342 , whereby the power electrode 342 is blocked from contact with external air. The insulator layer 345 may be made of the same material as the dielectric tube 341 .

The nozzle 330 is grounded and serves as a ground electrode.

When electric power is applied to the power electrode 342 , the activation gas 33 is generated in a space between the inner surface of the dielectric tube 341 and the nozzle tip 330a. The activation gas 33 is generated in the space between the inner surface of the dielectric tube 341 and the inclined surface of the nozzle tip 330a along the edge region of the power electrode 342 .

The activating gas 33 flows into the front area of the spray port 333 along the air flow 32 generated by the atomization of the medium, and is mixed with the medium 31 in the form of droplets or mist.

13 is a view illustrating a nozzle and an activation gas generator according to another embodiment of the present invention.

Referring to FIG. 13 , unlike the embodiment of FIG. 12 , the front end 330a of the nozzle 330 has the same diameter as other regions. In addition, the dielectric tube 341 may be provided with the same inner diameter. When electric power is applied to the power electrode 342 , an activation gas 33 is generated in a space between the dielectric tube 341 and the nozzle end 330a. The activating gas 33 flows into the front area of the spray port 333 along the air flow 32 generated by the atomization of the medium, and is mixed with the medium 31 in the form of droplets or mist.

As mentioned above, although the present invention has been described in detail using preferred embodiments, the scope of the present invention is not limited to specific embodiments and should be construed according to the appended claims. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

10: activation device
110: housing
120: medium supply unit
130: protective mask
140: first air supply unit
150: second air supply unit
200: medium spray gun

Claims (6)

A medium activating device portable by an operator, comprising:
a housing that can be worn on the body of the worker;
a protective mask placed on the worker's head;
a medium storage tank provided in the housing to store a liquid medium;
a first air supply unit provided in the housing and supplying air to the protective mask;
a nozzle for spraying the liquid medium supplied from the medium storage tank in a droplet or mist state; and
Comprising an activation gas generator for generating an activation gas from the outside of the nozzle,
The activating gas is introduced into the front of the nozzle by the spray pressure of the nozzle to activate the medium in the droplet or mist state. The method of claim 1,
A portable medium activating device provided in the housing and further comprising a second air supply unit for supplying air to the activation gas generating unit. The method of claim 1,
The nozzle is made of a conductive material, and the outer peripheral surface of the front end has an inclined surface whose diameter gradually decreases toward the front end,
The activation gas generator
a dielectric film formed on an outer peripheral surface of the nozzle;
a power electrode provided on the dielectric film; and
and a power source for applying power to the power electrode,
A portable medium activating device in which the nozzle is grounded. 4. The method of claim 3,
The distal end of the power electrode is positioned between both ends of the inclined surface. The method of claim 1,
The activation gas generator,
a dielectric tube having a space in which the front end of the nozzle is inserted and having an inner diameter larger than that of the front end of the nozzle;
a power electrode provided on an outer circumferential surface of the dielectric tube;
a ground electrode spaced apart from the power electrode by a predetermined distance and provided on an outer circumferential surface of the dielectric tube; and
and an insulator film coated on an outer circumferential surface of the dielectric tube such that the power electrode and the ground electrode are positioned therein. The method of claim 1,
The nozzle has a first flow path having a first spray port and a second flow path having a second auxiliary ball formed therein,
The liquid medium is supplied to the first flow path,
The activating gas is a portable medium activating device that is supplied to the second flow path.

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