KR102475982B1 - Manufacturing apparatus for plasma activated water - Google Patents

Abstract

The present invention provides a plasma activated water production device in which plasma is stably generated and maintained in a process of converting water into activated water by plasma treatment. The present invention includes: a discharge electrode positioned inside a dielectric tube; a conductive electrode installed at an end of the dielectric tube to deliver plasma of the discharge electrode; a counter electrode installed at a predetermined interval from the conductive electrode to generate plasma between the conductive electrode and the counter electrode; and an injector for injecting water to pass through the plasma generated between the conductive electrode and the counter electrode.

Description

Plasma activated water manufacturing device {MANUFACTURING APPARATUS FOR PLASMA ACTIVATED WATER}

The present invention relates to a plasma activated water production device, and more particularly, includes a discharge electrode inserted into a dielectric tube, a conduction electrode installed at an end of the dielectric tube, and a counter electrode installed at a position spaced apart from the conduction electrode, It relates to an activated water production device for producing activated water by spraying water into a plasma region generated between an electrode and a counter electrode.

Plasma active water means a liquid containing various active substances in water by reaction with plasma.

Plasma activated water is used for sterilizing and washing various devices, hands, etc. in various industrial sites and public places, and is being used for purification of contaminants and washing and preservation of food.

Such active water is produced by generating plasma on the surface of the water or in water to generate substances such as ozone and active radicals in the water.

1 relates to a device for treating water by conventional plasma, and is described in Patent Registration No. 10-1069982.

Referring to FIG. 1, in a conventional manufacturing apparatus, two or more discharge cells 1 are installed in water, and a plasma discharge is generated between the discharge cells 1 installed in water to convert water into active water and exist in water. It is configured to sterilize various types of germs.

In the above device, the current supplied to the discharge cell 1 is constantly controlled by the discharge current sensor 2 and the power control unit 3 in order to maintain a certain level of discharge performance.

On the other hand, Figure 2 relates to a manufacturing device capable of producing active water by generating plasma in water, which is described in Utility Model Registration No. 20-0464612.

Referring to FIG. 2, the supply of running water and the discharge of active water can be made by the pressure of running water connected to a water supply facility, and a running water space 6a surrounded by a case 6 is provided, and a running water space 6a ), treatment by plasma is performed.

That is, water is supplied to the flowing water space 6a inside the case 6 through the first water pipe 5a, and sterilization and plasma treatment are performed by the low-temperature plasma while passing through the low-temperature plasma generator 7, Activated water generated by the low-temperature plasma is discharged through the second water passage 5b.

Accordingly, it is possible to continuously plasma-treat the flowing water.

The above conventional active water production devices generate discharge or plasma in water to react the plasma with water, but it is not easy to start the discharge in water, especially in flowing water, and maintain a stable state even if plasma is generated. hard to be

Accordingly, the above-described conventional apparatus has a problem in that the reaction between water and plasma cannot be uniformly and effectively performed, and is not suitable for sufficiently supplying high-quality active water.

The present invention has been made in view of the above, and an object of the present invention is to provide a plasma active water production device having a structure in which plasma generation and maintenance can be stably performed in the process of converting water into active water by plasma treatment will be.

In addition, another object of the present invention is to provide a plasma activated water production device having a structure capable of obtaining activated water of good quality by stably and uniformly treating continuously supplied water with plasma.

Accordingly, the apparatus for producing plasma activated water according to the present invention includes a dielectric tube, a discharge electrode located inside the dielectric tube, a conduction electrode installed at an end of the dielectric tube to deliver plasma of the discharge electrode, and the conduction electrode. A counter electrode installed at a predetermined interval from the electrode to generate plasma between the conductive electrode and an injector for spraying water to pass through the plasma generated between the conductive electrode and the counter electrode, It is characterized by producing active water by reacting with plasma.

In addition, the present invention, a dielectric bead is installed inside the end of the dielectric tube between the discharge electrode and the conduction electrode, the discharge electrode is in contact with the dielectric bead, and the conduction electrode at the end of the dielectric tube is the dielectric bead Contact with is another characteristic.

In addition, in the present invention, the conductive electrode is a wire made of a conductive metal, and the conductive electrode is formed by bending the wire, and an attachment portion attached to the outside of the dielectric tube by winding an end of the dielectric tube , It is a part extending from the attaching part, and a discharge part is included to support the dielectric bead in a contact state so that the dielectric bead does not escape from the inside of the dielectric tube and form a plasma region between the counter electrode. do.

In addition, the present invention, when viewed in the longitudinal direction of the dielectric tube as a reference, the end of the discharge electrode and the attachment portion are disposed at a position spaced apart from each other so that the end portion of the discharge electrode does not overlap the attachment portion, so that in the discharge electrode Another feature is that spark discharge or concentrated discharge toward the inner surface of the quartz tube is prevented.

In addition, the present invention further includes an air supplier for supplying air to the inside of the dielectric tube, so that a flow of air discharged from the inside of the dielectric tube through the conduction electrode toward the counter electrode occurs. with different characteristics.

In another aspect, the present invention provides a quarantine gate device including the above-described plasma activated water production device, installing a gate unit, and spraying the active water to a quarantine target passing through the gate unit for disinfection. to be characterized

The apparatus for producing plasma activated water of the present invention is configured so that a plasma region is formed in the air between a conductive electrode and a counter electrode, and an injector injects water into the plasma region so that the water can react with the plasma.

Accordingly, even in the process of reacting water and plasma, the generation and maintenance of plasma can be smoothly performed, and since the injector continuously sprays and treats water in the plasma area, uniform plasma treatment for water can be easily performed, Even a large amount of water can be treated uniformly.

1 is a configuration explanatory diagram of a device capable of plasma treating water in the related art
Figure 2 is a cross-sectional view of a conventional manufacturing device capable of producing active water by generating plasma in water
Figure 3 is a configuration explanatory diagram explaining the configuration of a plasma activated water production device according to an embodiment of the present invention
4 is an explanatory diagram showing the configuration of a part where water is sprayed into a plasma region in an apparatus for producing plasma activated water according to an embodiment of the present invention in an enlarged manner.
Figure 5 (a) and (b) is a configuration explanatory diagram explaining the configuration of the conduction electrode in the plasma activated water production device according to an embodiment of the present invention
Figure 6 relates to a plasma activated water supply device capable of producing and supplying activated water by installing a plasma activated water production device according to an embodiment of the present invention, a cross-sectional view viewed from the forward direction
Figure 7 is a cross-sectional view of the plasma active water supply device according to Figure 6 viewed from the side
Figure 8 is a configuration explanatory diagram of a gate device for quarantine in which a plasma activated water production device is installed according to an embodiment of the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 3, the plasma activated water production apparatus 10 according to an embodiment of the present invention includes a dielectric tube 20, a discharge electrode 30 located inside the dielectric tube 20, and the dielectric tube 20. Plasma is generated between the conduction electrode 40 installed at the end of the discharge electrode 30 and transmitting the plasma of the discharge electrode 30, and the conduction electrode 40 installed at a predetermined interval from the conduction electrode 40. and an injector 60 for injecting water to pass through the plasma generated between the conductive electrode 40 and the counter electrode 50.

The dielectric tube 20 generates plasma by the discharge electrode 30 inside, accommodates the discharge electrode 30 and the dielectric beads 70, and may be supported by a conductive electrode 40 installed at the lower end.

The dielectric tube 20 is most preferably a quartz tube, and a ceramic tube or a glass tube, which are dielectric materials, is also possible.

The discharge electrode 30 is an electrode rod body that is connected to the power source 55 together with the counter electrode 50 and discharges inside the dielectric tube 20 to generate plasma. As the power source 55, a high voltage power source for plasma that generates normal plasma may be used.

On the other hand, the counter electrode 50, which generates plasma together with the discharge electrode 30, is installed below the dielectric tube 20 at a predetermined interval and has a larger area than the dielectric tube 20 or the conduction electrode 40 described later. formed in the form of a plate of

In the plate-shaped counter electrode 50 facing the lower end of the dielectric tube 20, the plasma discharged from the discharge electrode 30 and flowing down from the lower end of the dielectric tube 20 flows down to the plate surface of the counter electrode 50 to form a plasma region. This allows a region of a predetermined size to be formed without being narrowed.

Inside the dielectric tube 20, a dielectric bead 70 is installed between the discharge electrode 30 and the conduction electrode 40 with the end of the discharge electrode 30 in contact with the dielectric bead 70.

The dielectric beads 70 are spherical in shape and have a slightly smaller diameter difference than the inner diameter of the dielectric tube 20, preferably with a diameter difference of 1 to 2 mm, and a plurality of dielectric beads 70 It is installed so that it is sequentially layered, and the upper part of the dielectric bead 70 contacts the discharge electrode 30 and the lower part contacts the conductive electrode 40.

The dielectric beads 70 are installed so that the plasma generated by discharge in the discharge electrode 30 is sprayed along the surface of the dielectric beads 70 and flows down.

Although it may be configured without the dielectric beads 70, in that case, the discharge electrode 30 is discharged toward the inner surface of the dielectric tube 20 to generate plasma, and the possibility of spark discharge increases, (20) may weaken the durability. That is, even without the dielectric beads 70, a discharge may be generated from the discharge electrode 30 toward the conductive electrode 40 to form a plasma region P between the conductive electrode 40 and the counter electrode 50, but the dielectric Since spark discharge or concentrated discharge easily occurs inside the tube 20, dielectric beads 70 are installed to prevent damage to the dielectric tube 20 due to spark discharge or concentrated discharge.

Due to the dielectric beads 70, the plasma generated during discharge at the discharge electrode 30 can be dispersed to the conductive electrode 40 along the surface of the dielectric beads 70 and flowed down.

The shape of the dielectric bead 70 does not necessarily have to be spherical and may be deformed, but a spherical shape is a preferable shape for flowing plasma along the surface.

On the other hand, the conductive electrode 40 is installed at the end of the dielectric tube 20 and serves to deliver the plasma of the discharge electrode 30. Accordingly, the plasma generated by discharge at the discharge electrode 30 passes through the conductive electrode 40 to form a plasma region P in the space between the conductive electrode 40 and the counter electrode 50 .

That is, the conduction electrode 40 is made of a conductive metal, receives the plasma flowing along the surface of the dielectric bead 70, and spreads a predetermined area between the electrode 50 and the plasma region P. ) plays a role in forming Plasma is generated in the air in the space between the lower end of the conductive electrode 40 and the counter electrode 50 to form a plasma region P.

Plasma is most preferably generated in air, but if stable generation of plasma is possible, it is also possible to generate plasma in other types of gases that can replace air.

5(a) and (b) illustrate the structure of the conductive electrode 40, the conductive electrode 40 is a wire made of a conductive metal, and is formed by bending the wire.

Looking at the structure of the conductive electrode 40 manufactured by bending the wire rod, the attachment part 41 attached to the outside of the dielectric tube 20 by winding the end of the dielectric tube 20, and the attachment part 41 It is an extended part, supports the dielectric beads 70 in a contact state so that they do not escape from the inside of the dielectric tube 20, and includes a discharge part 42 that forms a plasma region between the counter electrode 50 and the counter electrode 50. .

The attaching portion 41 is wound in a coil shape, wraps around and holds the outer circumferential surface of the end of the dielectric tube 20, and is bent into a structure in which the end portion of the coil shape blocks the end of the dielectric tube 20 to form a discharge unit 42 ) is formed.

When viewed in the longitudinal direction of the dielectric tube 20 as a reference, the end of the discharge electrode 30 and the attachment portion 41 are spaced apart from each other so that the end of the discharge electrode 30 does not overlap the attachment portion 41. Let it be.

That is, as shown in FIG. 4, the lower end of the discharge electrode 30 is located on the upper side, and the attachment part 41 of the conductive electrode 40 is located at a lower height than that, meaning that they are disposed at positions spaced apart from each other in the vertical direction. .

As such, the distance Δh at which the end of the discharge electrode 30 and the attachment portion 41 are spaced apart is 1 to 3 of the height of the attachment portion 41 based on the longitudinal direction of the dielectric tube 20. Pears are preferable.

This configuration prevents the risk that the discharge generated from the discharge electrode 30 is induced to the attaching portion 41, which is a conductive metal, and may occur toward the inner surface (inner circumferential surface) of the dielectric tube 20, and the dielectric bead 70 ) to facilitate the generation of plasma flowing down.

The discharge part 42 plays a role of supporting the dielectric beads 70 so that they do not flow out in a state of contact with the dielectric beads 70 located inside the dielectric tube 20, and at the same time, the counter electrode 50 and This is the part where the plasma is dispersed and delivered to the counter electrode 50 in a close state.

Accordingly, the plasma generated between the conductive electrode 40 and the counter electrode 50 forms a plasma region in a curtain shape following the shape of the discharge unit 42 .

That is, since the discharge part 42 of FIG. 5(a) has a spiral shape with a gradually decreasing diameter, the plasma region P forms a curtain shape of a spiral trajectory between the counter electrode 50 along the spiral shape. Since the discharge part 42 in FIG. 6(b) has a straight line crossing the coil shape, a plasma region P is formed between the opposite electrode 50 and the opposite electrode 50 in a curtain shape along the straight line shape. .

To generate uniform plasma, the discharge unit 42 is installed parallel to the counter electrode 50.

Meanwhile, in the region between the conductive electrode 40 and the counter electrode 50, air may be discharged from the dielectric tube 20 to generate a wide plasma region in a curtain shape along the shape of the discharge unit 42. It is preferable that an air supplier (not shown) is installed so as to be.

The air supplier includes a pump and an air supply hose, and supplies air to the inside of the dielectric tube 20 by connecting the air supply hose to the upper end of the dielectric tube 20 .

Air supplied to the inside of the dielectric tube 20 generates a flow of air discharged from the inside of the dielectric tube 20 toward the counter electrode 50 via the discharge electrode 30 and the conduction electrode 40.

This flow of air not only induces the plasma to flow down well along the surface of the dielectric bead 70 inside the dielectric tube 20, but also induces plasma between the discharge part of the conduction electrode 40 and the counter electrode 50. When it is generated, by assisting the plasma to progress from the conductive electrode 40 toward the counter electrode 50, it is induced to smoothly form a wide plasma region P in a curtain shape.

Even if the air supply unit is not installed and there is no air supply to the inside of the dielectric tube 20, there is no problem in generating plasma between the conductive electrode 40 and the counter electrode 50, but the plasma is easily generated in the form of a spark discharge. There is a possibility that the plasma generation area may be narrowed.

If the air pressure of the air discharged from the dielectric tube 20 is too high, water injected from the injector may be hindered from approaching the plasma. need to be regulated.

On the other hand, the injector 60 is installed at a position on the side of the plasma region P, and injects water to pass through the plasma generated between the conductive electrode 40 and the counter electrode 50.

Preferably, the injector 60 sprays water together with air. This can form water into microparticles and pass them through the plasma region P, so that plasma and water can react in a wide area.

Water particles pass through the plasma region P, and a large amount of active substances such as ozone, hydrogen peroxide, and OH radicals may be generated and included in the water particles by a plasma reaction on the surface of the water particles in contact with air and plasma.

By including ozone and active radicals inside the water particles that have passed through the plasma, water is sterilized and internal contaminants can be oxidized and decomposed, and sterilization and oxidative decomposition ability can be improved due to the active substances contained in the water. have Accordingly, the active water that collects a large amount of water particles that have passed through the plasma can be used for disinfection and cleaning of the surface of the object to be cleaned.

When the injector 60 sprays water, despite the drawing of FIG. 4, the spraying directions of the curtain-shaped plasma formed in the plasma area P and the water perpendicularly cross each other, so that the sprayed water flows into the plasma area. It is preferable to make the wide side of (P) meet.

The spraying area where the injector 60 sprays water and air includes the end of the dielectric tube 20 as well as the space between the conductive electrode 40 and the counter electrode 50 where plasma is generated, The end of the tube 20 is wetted with water so that it can be cooled.

As plasma is generated inside the dielectric tube 20, the dielectric tube 20 is in a heated state, and durability of the dielectric tube 20 may be weakened due to continuous thermal shock. Therefore, the injector 60 injects water into the plasma region P to react the water with the plasma, and also sprays water to cool the ends of the dielectric tube 20, thereby protecting the dielectric tube 20 from the thermal shock of the plasma. can protect from

The above-described injector 60 does not necessarily spray water and air together, and may simply spray water to pass through the plasma region P in a dispersed state. For example, it may be a method of spraying water like a shower having many fine holes.

However, when the injector 60 is configured so that a large amount of fine water droplets are sprayed together with air into the plasma region P, a large amount of water particles are miniaturized and widely contacted with the plasma to obtain an effect of effective and efficient plasma treatment. have.

Meanwhile, FIGS. 6 and 7 show a plasma activated water supply device 80 in which the above-described plasma activated water production device 10 is installed to produce and supply activated water.

Plasma activated water supply device 80 of the present embodiment is provided with a water tank 86 whose upper end is covered by a cover 87, and a plasma region P is formed on the upper side of the surface of the water tank 86 so that the plasma is formed. The active water production device 10 is installed on the lid 87.

The injector 60 is installed on the sidewall of the water tank 86 above the water surface to inject water into the plasma region P.

A water level sensor 88 is installed at a position below the plasma region P and the injector 60 so that the water surface is always formed below the plasma region P and the injector 60.

That is, when the water level sensor 88 detects the surface of the water, the detection signal of the water level sensor 88 is transmitted to a controller (not shown) and the controller stops supplying water through the water inlet 81. Thereafter, when the water level sensor 88 does not detect the surface of the water, the supply of water to the water supply port 81 is resumed.

Activated water generated in the plasma activated water production device 10 is collected at the bottom of the water tank 86, and the collected activated water may be discharged through the drain hole 82 according to a control signal from the controller.

The circulation outlet 83 at the bottom of the water tank 86 is connected to the injector 60 by the pump 84, and the active water inside the water tank 86 is circulated and supplied to the injector 60 from the circulation outlet 83 to produce plasma. Activated water is sprayed to produce it.

Accordingly, the active water collected in the water tank 86 continues to circulate and is collected after passing through the plasma region P, so that new water is supplied to the water inlet 81 and even if the active water is diluted, the active water in the water tank 86 The concentration can be raised to a predetermined value or more.

On the other hand, FIG. 8 relates to a quarantine gate device 90 that disinfects a passing quarantine object, and the plasma activated water production device 10 and the plasma activated water supply device 80 of the above-described embodiment are installed Generates and sprays plasma activated water.

The quarantine gate device 90 installs a gate portion 91 through which people, livestock, cargo, vehicles, etc. pass, and disinfects by spraying active water on the quarantine target passing through the gate portion 91.

In the quarantine gate device 90, a plasma activated water production device 10 and a plasma activated water supply device 80 are installed inside the body portion 92 to produce active water, and to the gate portion 91 Whenever an object to be disinfected passes through, the detection sensor detects it and sprays the plasma active water through the nozzle 93 of the gate part 91.

Although preferred embodiments of the present invention have been described above, the above embodiments are only one embodiment within the scope of the technical idea of the present invention, and for those skilled in the art, within the technical idea of the present invention Of course, other modified implementations are possible.

10; Plasma activated water production device 20; dielectric tube
30; discharge electrode 40; conduction electrode
41; Attachment 42; discharge part
50; counter electrode 60; sprayer
70; dielectric beads 80; Plasma activated water supply device
81; water inlet 82; waterspout
83; circulation outlet 84; Pump
86; water tank 87; cover
88; water level sensor 90; Gate device for quarantine
91; gate part 92; body part
93; nozzle P; plasma area

Claims (6)

dielectric tube,
A discharge electrode positioned inside the dielectric tube;
A conduction electrode installed at an end of the dielectric tube to deliver plasma of the discharge electrode;
a counter electrode installed at a predetermined interval from the conduction electrode to generate plasma between the conduction electrode and the counter electrode;
By including a sprayer for spraying water to pass through the plasma generated between the conductive electrode and the counter electrode,
Reacting water with plasma to prepare active water,
A dielectric bead is installed inside the end of the dielectric tube between the discharge electrode and the conduction electrode,
Plasma activated water production device, characterized in that the discharge electrode contacts the dielectric bead and the conduction electrode contacts the dielectric bead at the end of the dielectric tube delete According to claim 1,
The conductive electrode is a wire made of a conductive metal,
The conductive electrode is formed by bending the wire rod,
An attachment portion attached to the outside of the dielectric tube by winding an end of the dielectric tube;
Plasma activation characterized in that it includes a discharge part that is a part extending from the attachment part, supports the dielectric bead in a contact state so that the dielectric bead does not escape from the inside of the dielectric tube, and forms a plasma region between the opposite electrode and the water manufacturing device According to claim 3,
When viewed in the longitudinal direction of the dielectric tube as a reference, the end of the discharge electrode and the attachment portion are disposed at a position spaced apart from each other so that the end portion of the discharge electrode does not overlap the attachment portion,
Plasma activated water production device characterized in that the spark discharge or concentrated discharge toward the inner surface of the dielectric tube is prevented from the discharge electrode The method of any one of claims 1, 3, and 4,
By further comprising an air supply for supplying air to the inside of the dielectric tube,
Plasma activated water production device, characterized in that to generate a flow of air discharged from the inside of the dielectric tube through the conductive electrode toward the counter electrode Including the plasma activated water production device according to any one of claims 1, 3, and 4, installing a gate unit, and spraying the active water to a disinfection target passing through the gate unit to perform disinfection. Disinfection gate device characterized by

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