WO2020158967A1 - Plasma generator using dielectric barrier discharge and air purification device comprising same - Google Patents

Abstract

The present invention relates to a plasma generator using dielectric barrier discharge and an air purification device comprising same. More specifically, the present invention relates to: a plasma generator using dielectric barrier discharge, the plasma generator having an electrode structure in which an inner electrode and an outer electrode can be simply and easily assembled, it is possible to separately replace only the outer electrode, and high-efficiency discharge can be achieved; an air purification device comprising same; and an air quality management system which can prevent nosocomial infections and efficiently manage indoor air quality in real time by using the air purification device.

Description

Plasma generator using dielectric barrier discharge and air purification device including the same

The present invention relates to a plasma generating apparatus using a dielectric barrier discharge and an air purifying apparatus including the same. More specifically, the present invention is a plasma generating apparatus using a dielectric barrier discharge having an electrode structure capable of assembling the inner electrode and the outer electrode while being simple to replace only the outer electrode, and capable of high-efficiency discharge, and an air purifying apparatus including the same. The present invention relates to an air quality management system that can prevent infection in a hospital by using an air purification device and efficiently manage indoor air quality in real time.

Recently, as the importance of air quality and a comfortable indoor environment is highlighted, interest in devices capable of controlling indoor air has increased. Among these devices, in particular, the air purifier has a function of filtering/deodorizing various pollutants and odors after inhaling indoor contaminated air through a fan installed therein.

Inside the air purifier, a fan operated by external electric power, a plurality of filters mounted to collect and remove contaminants and odors contained in the air sucked by the fan, and purified through the filter An outlet or the like formed to discharge air to the outside is provided.

However, the conventional air purifier has insufficient points to supply perfectly purified air to the user, and various types of air purifying devices have been developed and proposed, and among them, the demand for air purifying devices using plasma is increasing.

In the case of the plasma-based method, the efficiency of air purification is higher than the method of purifying air using a filter or the like, and there is an advantage in that there is no hassle of replacing the filter and is convenient.

At this time, plasma generated at a high pressure near atmospheric pressure can be largely classified into a low-temperature plasma and a high-temperature plasma.

Arc discharges with low voltage and high current characteristics are typical for high temperature plasmas.

The low temperature plasma can be classified into corona discharge, dielectric barrier discharge, and glow discharge according to discharge characteristics. In the case of corona discharge, when a high voltage is applied to a pointed metal electrode, a slight light emission phenomenon can be seen around the end, and it can be seen that discharge occurs.

Meanwhile, the dielectric barrier discharge causes a discharge by installing a dielectric on either or both electrodes. At this time, the dielectric plays an important role in imparting a proper function of discharge. That is, in the dielectric barrier discharge, when ionization occurs at one position between discharge electrodes, the transported charges accumulate in the dielectric, and the electric fields caused by these charges reduce the electric field between the electrodes and the flow of current is blocked after a few nanoseconds. At this time, the pulse duration of the current depends on the pressure, the ionization properties of the gas, and the properties of the dielectric.

In particular, the dielectric serves to limit the amount of charge delivered by the micro-discharge and to spread the micro-discharge to the entire electrode, and there is a micro-discharge by a streamer having a high current density locally in the discharge space. , These streamers are suitable for use for ozone generators and the like.

As a background technology of the present invention, the Republic of Korea Patent No. 10-0566851 (announced on April 3, 2006) is equipped with an ion generating device for generating positive and negative ions by applying an alternating voltage to the electrode in an air reformer, and in space At the same time, when these ions are mixed and attached to the surface of the bacteria in the air, a cation and anion have a chemical reaction to generate a radical or hydrogen peroxide, which is an active species, and an air reforming device that sterilizes by removing hydrogen atoms from the cells of bacteria.

The plasma generator using the conventional dielectric barrier discharge has a problem in that assembly of the internal and external electrodes provided around the dielectric is inconvenient and it is impossible to replace only the external electrode. In addition, the conventional plasma generator using a dielectric barrier discharge has high power consumption depending on the use of high voltage, but there is a problem in that no consideration is given to high efficiency discharge for reducing such power consumption.

In order to solve the problems of the prior art as described above, the object of the present invention is to facilitate the assembly of the internal electrode and the external electrode, and the plasma generating device using a dielectric barrier discharge that can be replaced only with the external electrode and air purification comprising the same Is to provide a device.

Another object of the present invention is to provide a plasma generating apparatus using a dielectric barrier discharge having an electrode structure capable of high-efficiency discharge and an air purifying apparatus including the same.

Another object of the present invention is to prevent infection in the hospital by using the air purification device, and outpatient clinics, intensive care units, emergency rooms, inpatient rooms, patient air spaces, etc. It is to provide an air quality management system that can be managed.

However, the problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, a dielectric having an open end and a closed other end, and a side portion formed in a hollow cylindrical shape; An internal electrode made of a porous metal material having a plurality of first through holes and surrounding an inner side surface of the dielectric; An external electrode made of a porous metal material having a plurality of second through holes and surrounding an outer side surface of the dielectric material; An insulating support portion sealingly supporting one end of the dielectric material; An electrode portion penetrating the insulating support portion and connected to the internal electrode; And a power supply unit for applying a high voltage to the electrode portion, wherein the internal electrode is a shape in which a metal material is rolled to have a first elastic force to restore a cylinder having a diameter larger than the inner cylindrical side diameter of the dielectric. 1 With the elastic force, the inner electrode is positioned to be in close contact with the fitting on the inner side surface of the dielectric, and the external electrode has a metal material so as to have a second elastic force to restore the cylinder to a smaller diameter than the outer cylindrical outer diameter of the dielectric. A plasma generator using a dielectric barrier discharge is provided in a curled shape and positioned to be in close contact with the second outer side of the dielectric by a fitting engagement with the second elastic force.

According to another aspect of the present invention, a dielectric having an open end and a closed other end and a side portion formed in a hollow cylindrical shape; An internal electrode made of a porous metal material having a plurality of first through holes and surrounding an inner side surface of the dielectric; An external electrode made of a porous metal material having a plurality of second through holes and surrounding an outer side surface of the dielectric material; An insulating support portion sealingly supporting one end of the dielectric material; An electrode portion penetrating the insulating support portion and connected to the internal electrode; And a power supply unit for applying a high voltage to the electrode portion, wherein the internal electrode has a larger area than the first through holes than the total area formed by the first through holes, and the external electrode is larger than the total area formed by the second through holes. A plasma generating apparatus using a dielectric barrier discharge is provided in which the area other than the second through holes is smaller, and the first through hole and the second through hole have different shapes and sizes.

The electrode portion is formed by extending a portion of the end of the inner electrode is bent to the center of the dielectric; A through hole formed at an end of the extension; And a fastening member passing through the through hole and fastened to the insulating support.

The first through hole may have a circular shape, and the second through hole may have a polygonal shape.

The second through hole may have a polygonal shape including an acute angle.

The second through-hole has a rhombus shape, and may be positioned such that the apex of the acute angle faces one end and the other end of the dielectric, and the apex of the obtuse angle faces both sides of the dielectric.

The second through hole has a rhombus shape, and the lengths of the four sides may be 1 mm or less, respectively.

The first through hole may have a larger hole size than the second through hole.

According to another aspect of the present invention, there is provided an air purifying device comprising at least one plasma generating device described above.

The air purifying device may include one or more coupling parts that are thread-coupled to the electrode parts of the plasma generating device.

The air purifying device may be a portable type or an air conditioning duct type inserted into the air conditioning duct.

The air purifying device is an air conditioning duct type inserted into the air conditioning duct, and may further include handles on both sides.

The air purifying device includes a filter; Pan; And a control unit.

The air purifying device can be controlled by a central control device.

According to another aspect of the invention, the sensor device for measuring the indoor air condition; The air purifying device described above; And a control device for controlling operation of the air purifying device according to information measured by the sensor device.

In the air quality management system, the sensor device and the air purifying device are installed in a plurality of indoor spaces, and the control device individually controls each air purifying device according to state information measured by a sensor device in each indoor space can do.

In the air quality management system, the air purifying device may be selected from one or more of a portable type and an air conditioning duct type inserted into the air conditioning duct.

The air quality management system can be installed in a hospital to prevent or reduce infection in the hospital.

The air quality management system may further include a display device that displays display information generated by the control device and provides it to the administrator.

The air quality management system is a terminal used by a user related to each indoor space, and may further include a user terminal displaying display information generated by the control device.

In the plasma generating apparatus using the dielectric barrier discharge according to an embodiment of the present invention, the internal and external electrodes of the plasma generating apparatus are easy to assemble, and only the external electrode of the plasma generating apparatus can be replaced separately, and the assembled/replaced plasma There is an advantage in that high-efficiency discharge is possible because the internal electrode and the external electrode of the generator are adhered to the dielectric.

In addition, the plasma generating apparatus and the air purifying apparatus using the dielectric barrier discharge according to an embodiment of the present invention have an advantage that high-efficiency discharge is possible because the internal and external electrodes of the plasma generating apparatus have different shapes.

Furthermore, the air purifying apparatus according to an embodiment of the present invention can be easily assembled by discharging portions of a plurality of plasma generating devices by screwing, and manufactured in various forms, such as a portable duct type, which can be easily installed as well as a portable duct. There is an advantage to do.

The air purifying apparatus using a dielectric barrier discharge according to an embodiment of the present invention adjusts the area of the through holes of the internal and external electrodes of the air purifying apparatus and changes the shape, thereby improving the efficiency of discharge as well as improving the anion generation and reducing ozone generation. There is an advantage to do.

The air quality management system according to an embodiment of the present invention can prevent infection in a hospital and efficiently manage indoor air quality with different spatial air quality in real time, such as an outpatient clinic, an intensive care unit, an emergency room, an inpatient room, and a patient waiting space. There is an advantage to do.

1 is a perspective view showing a discharge portion of a plasma generator using a dielectric barrier discharge according to an embodiment of the present invention.

2 is an exploded view of a discharge portion of a plasma generator using a dielectric barrier discharge according to an embodiment of the present invention.

Figure 3 schematically shows the overall configuration of a plasma generator using a dielectric barrier discharge according to an embodiment of the present invention.

4 is a cross-sectional view of A-A' in FIG. 3 and an exploded view thereof.

5A and 5B show a discharge unit having two types of external electrodes having different shapes and sizes of second through holes used to perform the first experiment.

6A to 6D show a discharge unit having four types of internal electrodes in which the first through-holes used to perform the second experiment are formed differently and the four types of internal electrodes.

7 shows a graph of the amount of anion generated for each of the four types of internal electrode samples in which the first through holes measured according to the first experiment are formed differently.

8 shows a graph of the results of a third experiment in which the amount of ozone generated during high voltage supply is measured using two types of internal electrodes having different areas other than the first through holes.

9A is a schematic block diagram of a portable air purifying apparatus 100 according to an embodiment of the present invention.

9B schematically shows the discharge unit coupling portion 140 of the air purifying apparatus 100 according to an embodiment of the present invention.

9C schematically shows an air conditioning duct type air purifying apparatus 100' according to an embodiment of the present invention.

9D schematically shows a state in which the air conditioning duct type air purifying apparatus 100” according to an embodiment of the present invention is coupled to the air conditioning duct 160.

10A is a schematic block diagram of an air quality management system according to an embodiment of the present invention.

10B schematically shows a state in which an air quality management system according to an embodiment of the present invention is installed in each space of a hospital.

10C schematically illustrates a method for managing air quality by the control device 300 of an air quality management system according to an embodiment of the present invention.

10D shows that the air quality status is displayed on the display device 400 by the air quality management system according to an embodiment of the present invention.

The above objects and means of the present invention and the effects thereof will be more apparent through the following detailed description in connection with the accompanying drawings, and accordingly, those skilled in the art to which the present invention pertains will facilitate the technical spirit of the present invention. Will be able to practice. In addition, in the description of the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

The terminology used herein is for describing the embodiments, and is not intended to limit the present invention. In the present specification, the singular form also includes the plural form in some cases unless otherwise specified in the phrase. In this specification, terms such as “include”, “have”, “have” or “have” do not exclude the presence or addition of one or more other components other than the components mentioned.

In this specification, terms such as “or” and “at least one” may refer to one of the words listed together, or a combination of two or more. For example, “or at least one of B” and “B” may include only one of A or B, and may include both A and B.

In this specification, descriptions following “for example,” etc. may not accurately match the information presented, such as the cited characteristics, variables, or values, and tolerances, measurement errors, limits of measurement accuracy, and other factors commonly known. It should not limit the embodiment of the invention according to various embodiments of the present invention with effects such as modifications.

In this specification, when a component is described as being'connected' or'connected' to another component, it may be directly connected to or connected to the other component, but other components may exist in the middle. It should be understood that it may. On the other hand, when a component is said to be'directly connected' or'directly connected' to another component, it should be understood that no other component exists in the middle.

In the present specification, when a component is described as being'on' or'in contact with' another component, another component may be directly in contact with or connected to the other component, but another component may exist in the middle. It should be understood that it can. On the other hand, when a component is described as being'directly on' or'directly on' another component, it can be understood that another component is not present in the middle. Other expressions describing the relationship between the components, for example,'between' and'directly between' can also be interpreted.

In this specification, terms such as'first' and'second' may be used to describe various components, but the corresponding components should not be limited by the above terms. In addition, the above terms should not be interpreted to limit the order of each component, but may be used for the purpose of distinguishing one component from another component. For example,'first component' may be referred to as'second component', and similarly'second component' may also be referred to as'first component'.

Unless otherwise defined, all terms used in this specification may be used in a sense that can be commonly understood by those skilled in the art to which the present invention pertains. In addition, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless specifically defined.

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

1 is a perspective view showing a discharge portion of a plasma generator using a dielectric barrier discharge according to an embodiment of the present invention, and FIG. 2 is a discharge portion of a plasma generator using a dielectric barrier discharge according to an embodiment of the present invention It shows the exploded view. In addition, FIG. 3 schematically shows the overall configuration of a plasma generator using a dielectric barrier discharge according to an embodiment of the present invention, and FIG. 4 shows a cross-sectional view of A-A' in FIG. 3 and an exploded view thereof.

Plasma generator using a dielectric barrier discharge according to an embodiment of the present invention, as shown in Figure 1, the dielectric 10, the inner electrode 20, the outer electrode 30, the insulating support 40, the electrode It includes a unit 50, and a power supply unit 60. At this time, the dielectric 10, the internal electrode 20, the external electrode 30, the insulating support portion 40, and the electrode portion 50 form one discharge portion (1).

The dielectric 10 has one end formed in an open shape, the other end formed in a closed shape, and a side portion thereof formed in a hollow cylindrical shape. At this time, the other end of the closed shape may be formed in a hemispherical shape. For example, the dielectric 10 may be made of a material of glass, quartz, or synthetic resin, but is not limited thereto. The dielectric 10 may increase the discharge efficiency when its thickness is 0.5 to 5 mm, but is not limited thereto.

The internal electrode 20 is made of a porous metal material having a plurality of first through holes 21 and can be supplied with a high voltage. At this time, the inner electrode 20 is provided to surround the inner side of the hollow cylindrical side of the dielectric 10. In addition, for uniform discharge, the first through holes 21 may be preferably formed at regular intervals. For example, the internal electrode 20 may be made of aluminum or stainless steel, but is not limited thereto, and various other metal materials may be used.

The external electrode 30 is made of a porous metal material having a plurality of second through holes 32 and may be grounded. At this time, the external electrode 30 is provided to surround the outer side of the hollow cylindrical side of the dielectric 10. In addition, for uniform discharge, it may be preferable that the second through holes 32 are formed at regular intervals. For example, it may be made of stainless steel or brass, but is not limited thereto, and various other metal materials may be used.

The insulating support 40 is a structure for sealing one end of the dielectric 10, and may be made of an insulating material so that the inner electrode 20 and the outer electrode 30 can be completely insulated from the outside. That is, the insulating support 40 serves to insulate the internal electrode 20 and the external electrode 30 from each other, and at the same time, mechanically fix and support the external electrode 30, the internal electrode 20, and the dielectric 10. Do it.

The insulating support portion 40 may have a thickness of a certain degree and may be formed in a disc shape having an inner space in which the central portion is recessed. Accordingly, the insulating support 40 may be fitted to one end of the dielectric 10 in the interior space. In addition to such a fitting engagement, the insulating support 40 can be coupled to one end of the dielectric 10 by using a fastening member.

The electrode part 50 is configured to penetrate the insulating support part 40 and be connected to the internal electrode 20. The electrode portion 50 is supported by passing through a hole formed in the center of the insulating support portion 40. That is, in the inner space of the insulating support portion 40, the electrode portion 50 is electrically connected to the internal electrode 20, and the power source 60 is connected to the electrode portion 50 to be electrically conductive to apply AC high voltage. Plays a role. In order to increase the insulating properties of the electrode portion 50, an insulator made of a high insulating material may be covered on the outside.

Specifically, for fixing the insulating support portion 40 in addition to the connection with the internal electrode 20, the electrode portion 50 is provided with a bolt 51 and a nut 52 and an extension portion 53, which are fastening members made of a metal material. It can contain. That is, as the bolt 51 penetrates the insulating support portion 40 inside the dielectric 10, the head is located inside the dielectric 10, and the end of which the first thread is formed is located outside the insulating support portion 40, , A nut 52 formed inside the second thread corresponding to the first thread is threadedly coupled to the bolt 51. At this time, the extension portion 53 is provided with a through hole 53a at its end in a structure in which a part of the end of the internal electrode 20 is extended and bent, so that the threaded portion of the bolt 51 passes through the through hole 53a. The internal electrode 20 is electrically connected to the power supply unit 60 through the electrode unit 50. Therefore, according to the structure of the electrode unit 50, there is no need for a separate connecting member, thereby reducing the production cost, and the assembly process is simple even when assembling, thereby increasing production efficiency.

The power supply unit 60 is configured to apply AC high voltage to the electrode unit 50. As such, when the power supply unit 60 applies a high voltage to the electrode unit 50, the external electrode 30 must be grounded. At this time, the inner electrode 20 and the outer electrode 30 are spaced apart from each other with the dielectric 10 interposed therebetween. Accordingly, when the power supply unit 60 applies a high voltage to the electrode unit 50, the corresponding high voltage is transmitted to the internal electrode 20 through the electrode unit 50, and the internal electrode 20 conducts a high voltage current. As a result, a dielectric barrier discharge phenomenon occurs between the dielectric 10 and the external electrode 30.

Due to the discharge phenomenon generated as described above, the air contained in the air in the space in which the present invention is located may be oxidized while the air may be purified. That is, according to the present invention, the air contained in the air is oxidized while the air in the space in which the external electrode 30 is located flows due to the discharge generated between the dielectric 10 and the external electrode 30. By being removed, air can be purified. In particular, the structure of pathogens such as fungi, tuberculosis bacteria, and viruses contained in air in the space where the external electrode 30 is located can be destroyed and sterilized, and deodorized by removing volatile organic compounds (VOC). Can.

Hereinafter, the structures of the internal electrode 20 and the external electrode 30 that are simple to assemble the internal electrode and the external electrode and can be replaced only with the external electrode will be described in detail.

4 is a cross-sectional view of A-A' in FIG. 3 and an exploded view thereof. Referring to Figure 4, the present invention has the advantage of easy assembly of the inner electrode 20 and the outer electrode 30. At this time,'assemble' means that the inner electrode 20 and the outer electrode 30 are disposed on the inner and outer surfaces of the side of the dielectric 10, respectively. To this end, the electrode portion 50 may include a bolt 51, a nut 52 and an extension portion 53 as described above. In particular, the assembled internal electrode 20 and the external electrode 30 should be in close contact with the side of the dielectric 10, and as before the replacement, the replaced external electrode 30 should be in close contact with the side of the dielectric 10. That is, the assembled internal electrode 20 should be positioned to be in close contact with the inner side of the side of the dielectric 10, and the assembled or replaced external electrode 30 should be positioned to be in close contact with the outer side of the dielectric 10. This is because the discharge phenomenon is affected by the distance between the inner electrode 20 and the outer electrode 30, the discharge efficiency may decrease when the inner electrode 20 and the outer electrode 30 are not in close contact with the dielectric 10. Because it can.

Accordingly, in the related art, the external electrode 30 had to be attached to the dielectric 10 by using an adhesive or the like, or by welding, in order for the external electrode 30 to completely adhere to the dielectric 10. However, in the dielectric barrier discharge, the external electrode 30 generates a whitening phenomenon in which foreign substances such as wheat flour are generated around the through-holes by discharge. When this whitening occurs, the amount of ions generated is gradually reduced due to foreign matter. In addition, the external electrode 30 is located in the flow of air and is exposed to the pollutant, and the function of the external electrode 30 is reduced due to the pollutant, thereby gradually decreasing the amount of ions generated. For these reasons, the external electrode 30 needs to be separated and washed regularly. However, when attached by adhesive or welding like the conventional external electrode 30, only the external electrode 30 cannot be replaced, and the entire discharge unit 1 has to be replaced.

Therefore, the present invention provides a configuration for the inner electrode 20 and the outer electrode 30 to be adhered to the dielectric 10 as much as possible without a separate coupling member due to the elastic force of the inner electrode 20 and the outer electrode 30. do. According to the configuration of the present invention, the assembly of the inner electrode 20 and the outer electrode 30 is easy, and when a whitening phenomenon occurs or a contaminant is attached, the outer electrode 30 is simply replaced or separated, and then reused after washing. This is possible. Therefore, the production and maintenance cost of the plasma generator can be reduced, and the discharge efficiency can be maintained continuously.

Looking specifically, it may be desirable that the inner electrode 20 has a shape in which a metal material is rolled to have a first elastic force to restore a cylinder having a diameter larger than the inner diameter of the side cylinder of the dielectric 10. In this case, when the inner electrode 20 is rolled with a force opposite to the first elastic force or inserted into the inner side surface of the dielectric 10, the inner electrode 20 is brought into close contact with the inner side surface of the dielectric 10 by the first elastic force. Is done. The internal electrode 20 may be manufactured through a process of winding a metal plate having a predetermined thickness having a first through hole 21 through a cylindrical roll having a diameter larger than the inner diameter of the side cylinder of the dielectric 10.

In addition, it may be desirable that the external electrode 30 has a shape in which a metal material is rolled to have a second elastic force to restore a cylinder having a diameter smaller than the outer diameter of the side cylinder of the dielectric 10. In this case, when the external electrode 30 is stretched with an opposite force over the second elastic force and inserted into the outer side surface of the dielectric 10, the external electrode 30 is in close contact with the outer side surface of the dielectric 10 by the second elastic force. Is done. The external electrode 30 may be manufactured through a process of winding a metal plate having a predetermined thickness over which the second through hole 31 is formed, onto a cylindrical roll having a diameter smaller than the outer diameter of the side cylinder of the dielectric 10.

The internal electrode 20 and the external electrode 30 formed as described above may be fitted and coupled to the side of the dielectric 10. That is, the inner electrode 20 can be fitted to the inner side surface of the dielectric 10 using the first elastic force, and the outer electrode 30 is attached to the outer side surface of the dielectric 10 using the second elastic force. Fits can be combined. Through the fitting coupling using the elastic force, the present invention is the ease of assembling the inner electrode 20 and the outer electrode 30, the possibility of replacing only the outer electrode 30 and the dielectric of the inner electrode 20 and the outer electrode 30 By improving the adhesion to (10), it is possible to increase the discharge efficiency of the discharge unit (1).

On the other hand, for a high-efficiency discharge effect, the internal electrode 20 may have a larger total area than the first through-holes 21 than the total area of the first through-holes 21, and the external electrode 30 may pass through the second. The area other than the holes 31 may be smaller than the total area of the second through holes 31. In this case, the internal electrode 20 can more easily maintain the first elastic force due to the characteristics of the area, that is, the area other than the larger first through holes 21. However, the external electrode 30 may be difficult to maintain the second elastic force due to the characteristics of the area, that is, the area other than the smaller second through holes 31.

To compensate for this, the second through hole 31 may have a polygonal shape, a polygonal shape including an acute angle may be preferable, and a rhombus shape including a pair of acute and obtuse angles may be more preferable. This is because the rhombus shape can double the elastic force than other square shapes.

In addition, the second through hole 31 may be preferably positioned such that the apex of the acute angle faces one end and the other end of the dielectric 10 and the apex of the obtuse angle faces both sides of the dielectric 10. In this case, the process of winding the external electrode 30 on the cylindrical roll becomes smoother and at the same time, the second elastic force can be increased. As it is wound around the cylindrical roll as described above, the external electrode 30 has an elastic force such that a pair of obtuse vertices faces each other around a line formed by a pair of acute vertices, and thus the elastic force or the other direction in the opposite case. It is possible to obtain a second elastic force that is greater than the elastic force generated. That is, when the acute angle and the obtuse angle are formed in a direction different from the above-described case, the external electrode 30 may not be well wound on the circular roll, and even if it is wound, its second elastic force may drop.

In addition, in order to maintain the second elastic force while maintaining the characteristics of the area, that is, the area other than the smaller second through holes 31, the external electrodes 30 have a distance between the neighboring second through holes 31. The length of the four sides of the second through hole 31 having a rhombus shape may be 1 mm or less (hereinafter referred to as “external electrode limitation conditions”), while being 0.5 mm or more and less than 1 mm.

5A and 5B are two types of external electrodes 30 having different shapes and sizes of second through holes 31 used to perform the first experiment (hereinafter, referred to as “sample A” and “sample B”, respectively). (Referred to as ”). 5A and 5B show photographs of Samples A to B, respectively.

Referring to FIG. 5A, the external electrode 30 of Sample A, which does not satisfy the external electrode limitation condition (the length of each of the four sides is 2 mm), has a small elastic force, so that one end and the other end of the external electrode 30 side are separately coupled means. It should be used in combination, and even with such a coupling means, the external electrode 30 is difficult to adhere to the outer surface of the side of the dielectric 10, so that the discharge efficiency may decrease.

On the other hand, referring to Figure 5b, the external electrode 30 of Sample B that satisfies the external electrode limitation condition is sufficiently large in elasticity, so that even if one end and the other end of the outer electrode 30 side are not combined by separate coupling means. Due to the second elastic force, the external electrode 30 can easily adhere to the outer surface of the dielectric 10 side, thereby improving discharge efficiency.

Hereinafter, structures of the internal electrode 20 and the external electrode 30 for increasing the efficiency of the above-described discharge phenomenon will be described.

5A and 5B are two types of external electrodes 30 having different shapes and sizes of second through holes 31 used to perform the first experiment (hereinafter, referred to as “sample A” and “sample B”, respectively). (Referred to as ”). 5A and 5B show photographs of Samples A to B, respectively. In addition, the following [Table 1] shows the anion generation amount measured according to the first experiment.

	Sample A	Sample B
1 time	11.0	19.5
Episode 2	8.4	23.0
3rd time	9.0	18.6
Episode 4	7.5	22.0
Episode 5	9.2	19.1
Episode 6	10.3	22.6
Episode 7	8.4	15.8
Episode 8	11.1	29.8
Episode 9	10.1	16.3
Episode 10	9.8	20.9
Episode 11	12.3	20.3
Episode 12	11.1	29.6
Average	9.8	21.2

For the first experiment, the same internal electrode 20 was used for Sample A and Sample B, and measurement was performed using an ion counter at a distance of 50 cm from the object. At this time, the internal electrode 20 of Sample A had a second through hole 31 in an orthogonal shape, and each side length of the second through hole 31 was 2 cm. The internal electrode 20 of the sample B has a rhombus shape with a pair of acute angles and obtuse angles each, and each side has a length of 1 cm. As a result of the first experiment, as shown in Table 1, the amount of anion generated in sample B compared to sample A There were more. That is, as the size of the second through-hole 31 decreases, the discharge efficiency is higher as the second through-hole 31 has more acute angles or sharper acute angles.

However, in other experiments, it was found that the area of the area other than the second through-holes 31 is larger than the total area of the second through-holes 31, and the amount of negative ions generated is higher than that of the opposite case. This was analyzed because the discharge space is reduced and the discharge efficiency is also reduced when the area other than the second through holes 31 is larger than the total area of the second through holes 31.

Summarizing the results of the above first experiment, the second through hole 31 may have a polygonal shape, but it may be desirable to have a polygonal shape including an acute angle. In addition, it may be desirable that the area other than the polygonal second through-holes 31 is larger than the total area of the polygonal second through-holes 31.

6A to 6D are discharge units 1 having four types of internal electrodes 20 in which the first through holes 21 used to perform the second experiment are differently formed, and the four types of internal electrodes 20 ) (Hereinafter referred to as “sample 1” to “sample 4” respectively). That is, FIGS. 6A to 6D show photographs of Samples 1 to 4, respectively. In addition, Figure 7 shows a graph of the amount of anion generated measured according to the second experiment.

First, as shown in FIGS. 6A to 7, a second experiment was performed to measure the amount of anion generated by applying a high voltage when various internal electrodes 20 having different first through holes 21 were formed. At this time, as the amount of anion generated increases, the discharge phenomenon appears with higher efficiency, so it may be preferable to use the internal electrode 20 having a large amount of anion generated.

For the second experiment, four types of internal electrodes 20 were used, but the hole size of the first through hole 21 decreases as it goes from FIG. 6A to FIG. 6D. At this time, the internal electrode 20 of FIGS. 6A and 6B has a total area of the first through holes 21 (ie, an area drilled in the metal plate) and an area other than the first through holes 21 (ie, in the metal plate) Larger than unperforated area). In addition, in the internal electrode 20 of FIG. 6C, the total area of the first through hole 21 is smaller than the area other than the first through holes 21, and the internal electrode 20 of FIG. 6D has the first through hole ( It is a metal plate without 21).

In addition, for the second experiment, high voltages of 1800V, 1900V, and 2000V were applied to each sample, and the ion counter was used for 1 hour at 10-minute intervals at a distance of 10 cm from the object.

As a result of the second experiment, as shown in FIG. 7, the amount of anions generated was gradually increased from Sample 1 to Sample 4. That is, the larger the area outside the first through-holes 21, the higher the discharge efficiency (hereinafter referred to as “the first condition of the internal electrode”). That is, when the total area of the actual metal part, which is the part excluding the first through holes 21 in the internal electrode 20, may increase, the discharge amount may increase, and accordingly, the emission amount of the ion cluster also increases, resulting in fine dust, volatile organic compounds, The ability to remove rhinitis allergens and sterilization/purification can be effectively improved.

FIG. 8 shows a graph of the results of a third experiment in which the amount of ozone generated during high voltage supply was measured using two types of internal electrodes 20 having different areas other than the first through holes 21.

A third experiment was performed to measure the amount of ozone generated according to the application of high voltage when two types of internal electrodes 20 (sample 2 and sample 3) having different areas other than the first through holes 21 were used. At this time, since ozone corresponds to a substance harmful to the human body, it may be preferable to use the internal electrode 20 having a small amount of ozone.

For the third experiment, the same high voltage was applied in each case, and measured using an ion meter at a distance of 10 cm, 15 cm, and 30 cm from the subject.

As a result of the third experiment, as shown in FIG. 7, the case where the inner electrode 20 having a smaller area than the first through holes 21 is smaller than the total area of the first through holes 21 (left bar) is eliminated. Less ozone was generated than the case where the internal electrode 20 having a larger area than the first through-holes 21 was larger than the total area of the first through-holes 21 (right bar). That is, the smaller the area outside the first through holes 21, the less ozone was generated (hereinafter referred to as “second condition of the internal electrode”). The surface area of the area other than the first through holes 21 may be about 40 to 95%, and about 44 to 90% may be preferable, but is not limited thereto.

Considering the results of the second experiment and the third experiment, the internal electrode 20 without the first through hole 21, such as the sample 4 of the second experiment, has the maximum ozone generation, so the second condition of the internal electrode is satisfied. Not suitable for use. In addition, as in Samples 1 and 2 of the second experiment, the internal electrode 20 having a larger total area formed by the first through holes 21 than the areas other than the first through holes 21 has a low discharge efficiency and thus decreases the discharge efficiency. Not suitable for use because the first condition is not satisfied. Therefore, in order to simultaneously satisfy the first condition and the second condition of the internal electrode by simultaneously considering discharge efficiency and the amount of ozone generated, the total area formed by the first through holes 21 as in Sample 3 of the second experiment is the first through hole. It may be desirable to use an internal electrode 20 smaller than the area other than (21).

On the other hand, in the second experiment, the shape of the first through hole 21 was limited to a circle (hereinafter referred to as “the third condition of the internal electrode”). This is because the circle is more efficient for the perforation process than the polygon. Also, the circular first through hole 21 may satisfy the first condition of the internal electrode more than the polygonal first through hole 21. That is, the area outside the area formed by the circular first through holes 21 may be larger than the area outside the area formed by the polygonal first through holes 21. Accordingly, the inner electrode 20 of the circular through hole 21 that satisfies the third condition of the inner electrode may have higher discharge efficiency than the inner electrode 20 of the polygonal through hole 21.

Summarizing the results of the above second and third experiments, the shape and size of the first through hole 21 and the second through hole 31 may affect the discharge phenomenon. Accordingly, the internal electrode 20 and the external electrode 30 may have different through hole shapes and sizes. That is, the first through hole 21 and the second through hole 31 may have different shapes and sizes. In particular, according to the third condition of the internal electrode, it may be preferable that the first through-hole 21 has a circular shape.

Meanwhile, the second through hole 31 was manufactured in various shapes to measure the amount of anion generated. As a result, the second through hole 31 is formed of a polygon having a different shape from the circular first through hole 21.

That is, it was analyzed that the second through hole 31 of the angled polygon having a vertex has a greater effect on the increase in discharge efficiency than the circular shape having a smooth shape, and in particular, it was predicted that the more the acute angle was included, the more. Accordingly, in the case of using various external electrodes 30 having different polygonal shapes and sizes of the second through-holes 31, the first experiment was performed as described above to measure the amount of anion generated by applying a high voltage. At this time, as the amount of anion generated increases, the discharge phenomenon appears with higher efficiency, so it may be preferable to use the external electrode 30 with a large amount of generated anions.

According to the experiments 1 to 3, the first through hole 21 may have a larger hole size than the second through hole 31.

Hereinafter, an air purifying apparatus including a plasma generating apparatus according to an embodiment of the present invention will be described.

9A is a schematic block diagram of a portable air purifying apparatus 100 according to an embodiment of the present invention, and FIG. 9B is a discharge unit coupling portion of the air purifying apparatus 100 according to an embodiment of the present invention ( 140) schematically.

9A, the portable air purifying apparatus 100 according to an embodiment of the present invention may include a filter 110, a fan 120, a control unit 130, and a discharge unit 1.

Similar to the conventional air purifying apparatus 100, the portable air purifying apparatus 100 of the present invention is a fan 120 operated by the control unit 130 and contaminated indoors introduced by the operation of the fan 120 The air is primarily filtered by the filter 110, and sterilized, deodorized, and purified by plasma generated by the discharge unit 1, and then discharged into the room.

The photoble air purification apparatus 100 is a stand-type or wall-mounted type that is easily moved and installed, and is installed in a space having high demand for sterilization and deodorization, such as a hospital, so that indoor air quality can be intensively and efficiently managed. The portable air cleaning device 100 may be directly controlled by a user or may be controlled by a central control device.

Referring to FIG. 9B, the discharge unit 1 may be thread-coupled to the discharge unit coupling unit 140 made of a high insulating material provided inside the air purifying apparatus 100. That is, the discharge portion 1 is a coupling groove 141 having a third thread corresponding to the first thread, the end of which is formed on the outside of the insulating support portion 40, the end of which the first thread of the bolt (51 in FIG. 1) is formed ), the coupling portion 140 is screwed with the bolt (51 in FIG. 1).

One or more discharge units 1 may be provided, and may be electrically connected to a power supply unit provided therein by the control unit 130.

9C schematically shows an air conditioning duct type air purifying apparatus 100' according to an embodiment of the present invention, and FIG. 9D shows an air conditioning duct air purifying apparatus 100” according to an embodiment of the present invention. 160) is schematically shown.

Referring to Figure 9c, the air conditioning duct type air purifying apparatus 100' is installed in a form that is buried in the air conditioning duct 160 of a large facility such as a hospital, and the room in the same manner as the portable air purifying apparatus shown in FIG. 9b. All (1') is assembled, and may be provided with one or more discharge units (1') by providing one or more discharge unit coupling portion (140'). The air conditioning duct type air purifying apparatus 100' may sterilize and purify a wide space and a plurality of spaces at the same time, and may be provided with a separate control unit 130' which may be controlled by a central control device. In particular, the air conditioning duct type air purifier (100') is installed in the hospital and effectively removes contaminants such as pathogens, fine dust, and VOCs from the air flowing into the room and/or sent out to the air, effectively preventing infection in the hospital. Or you can manage.

Referring to FIG. 9D, the air conditioning duct type air purifying apparatus 100 ″ can be easily installed using a fastening member on an existing air conditioning duct 160 in a modular form. At this time, both sides of the air conditioning duct type air return device 100 ″ may be provided with handles 150 to facilitate movement and installation.

Hereinafter, an air quality management system according to an embodiment of the present invention will be described in detail.

10A is a schematic block diagram of an air quality management system according to an embodiment of the present invention. 10B schematically shows a state in which an air quality management system according to an embodiment of the present invention is installed in each space of a hospital. 10C schematically illustrates a method for managing air quality by the control device 300 of an air quality management system according to an embodiment of the present invention. 10D shows that the air quality status is displayed on the display device 400 by the air quality management system according to an embodiment of the present invention.

The air quality management system according to an embodiment of the present invention is a system for purifying and managing the state of indoor air, as shown in FIG. 10A, air purification devices 100, 100', 100", sensor device 200, It may include a control device 300, a display device 400, and a user terminal 500.

In particular, the air quality management system according to an embodiment of the present invention can purify and manage the air condition of each indoor space in a building having a plurality of divided indoor spaces, such as a company or a hospital. In this case, each indoor space can be purged and managed in various air conditions, particularly different air conditions.

Referring to FIG. 10B, the air purifying devices 100, 100', and 100" are installed in an indoor space to purify air in the space, and the plasma device using the dielectric barrier discharge described above according to FIGS. 1 to 9D It may be an air purifying device comprising a. The air purifying apparatus 100, 100', 100" may be a portable air purifying apparatus 100 as described above, or may be an air conditioning duct air purifying apparatus 100', 100". The air purification devices 100, 100', and 100" may be disposed in a plurality of indoor spaces to perform air purification under the control of the control device 300. In addition, as illustrated in FIG. 9A, the portable air purifying apparatus 100 may intensively purify air in an installed space under the control of the control unit 130.

Referring to FIG. 10B, the sensor device 200 is installed in an indoor space and measures indoor air conditions in the space, and may include one or more sensors related to indoor air condition measurement. For example, the sensor device 200 may include a fine dust sensor for measuring fine dust concentration, a carbon dioxide sensor for measuring carbon dioxide concentration, a temperature sensor for measuring temperature, a humidity sensor for measuring humidity, and volatile organic compounds (Volatile Organic Compounds); VOC) may include any one or more of a VOC sensor for measuring VOC, and an ozone sensor for measuring ozone concentration, but is not limited thereto.

Referring to FIG. 10C, the control device 300 is a component that is connected to each component and performs various control operations such as various operation control, information transmission control to each component, and operation control of other components.

Specifically, the control device 300 may control to determine the air condition of each indoor space by calculating a value sensed by the sensor device 200. At this time, the control device 300 may divide the air condition of each indoor space into a plurality of steps according to values sensed by the sensor device 200. For example, the air condition may be divided into four stages such as'good','normal','bad', and'very bad' as the value detected by the sensor device 200 increases. It is not. In particular, the control device 300 may divide the fine dust state into a plurality of steps according to the interval of the fine dust concentration value measured from the fine dust sensor.

Also, the control device 300 may control on/off operations of the air purification devices 100, 100', and 100" disposed in each indoor space. That is, the control device 300 controls each air purifying device 100, 100', 100” to operate every predetermined time, or according to the air condition detection value measured by the sensor device 200, each air purifying device 100 , 100', 100”). For example, when the fine dust state of an indoor space corresponds to a level of'normal' or'bad' or higher, the control device 300 operates the air purifying devices 100, 100', 100” of the indoor space Or you can control it to work hard. Therefore, infection in the hospital of the air quality management system according to an embodiment of the present invention can be effectively prevented.

The control device 300 may generate display information and transmit it to the display device 400 or the user terminal 500, and control various information to be stored in a storage device (not shown).

Referring to FIG. 10D, the display device 400 is configured to display display information generated by the control device 300 and provide it to an administrator (for example, a medical staff in a hospital building). At this time, the display device 400 is an air condition measurement item (for example, fine dust concentration, carbon dioxide concentration, temperature, humidity, VOC concentration, ozone concentration, etc.) for each indoor space, and a sensor device 200 of the corresponding indoor space The measured value of each sensor of the can be displayed. Particularly, the display 400 may be displayed for each air condition measurement item in multiple stages.

For example, the display device 400 includes a liquid crystal display (LCD), a light-emitting diode (LED) display device, an organic light-emitting diode (OLED) display device, and a quantum It may be a quantum dot (QD) display device, a microelectromechanical systems (MEMS) display device, or an electronic paper display device, but is not limited thereto.

The user terminal 500 is a terminal used by a user related to each indoor space, and displays display information generated by the control device 300 according to a user's selection, so that the user (eg, a patient or patient in a hospital building) Family, etc.). At this time, the user can display the corresponding display information by accessing the control device 300 using a previously registered ID and password. Checking the information displayed on the user terminal 500, the user can quickly take measures to improve the air condition of the indoor space.

For example, the electronic device includes a smart phone, a smartpad, a mobile phone, a tablet personal computer (PC), a desktop personal computer (PC), a laptop personal computer (PC), It may be a netbook computer (netbook computer), smart glasses, a smart watch (smart watch), but is not limited thereto.

On the other hand, a storage device (not shown) is configured to store various information necessary for the control operation of the control device. For example, the storage device may include information about an operating system (OS), measurement information measured by a sensor device, air condition information, reference information for determining air condition in multiple stages, a display device 400 or a user terminal ( 500) can be stored.

For example, the storage device may be a hard disk type, a magnetic media type, a compact disc read only memory (CD-ROM), or an optical media type, according to its type. Magneto-optical media type, multimedia card micro type, flash memory type, read only memory type, random access memory type , And a cloud server, but is not limited thereto. In addition, the storage device may be a cache, a buffer, a main memory, or an auxiliary memory or a separately provided storage system according to its use/location, but is not limited thereto.

In the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention is not limited to the described embodiments, but should be defined by the claims that will be described later and those equivalent to the claims.

[Description of codes]

1, 1', 1”: discharge part 10: dielectric

20: internal electrode 21: first through hole

30: external electrode 31: second through hole

40, 40': insulation support portion 50: electrode portion

51: bolt 52: nut

53: extension 53a: through hole

60: power supply 100, 100', 100": air purifier

110: filter 120: fan

130, 130': control unit 140, 140': coupling unit

141: engaging groove 150: handle

160: air conditioning duct 200: sensor device

300: control device 400: display device

500: user terminal

Claims (20)

1. A dielectric having an open one end and a closed other end, and a side portion formed in a hollow cylindrical shape;

   An internal electrode made of a porous metal material having a plurality of first through holes and surrounding an inner side surface of the dielectric;

   An external electrode made of a porous metal material having a plurality of second through holes and surrounding an outer side surface of the dielectric material;

   An insulating support portion sealingly supporting one end of the dielectric material;

   An electrode portion penetrating the insulating support portion and connected to the internal electrode; And

   Includes; a power supply for applying a high voltage to the electrode portion,

   The inner electrode has a shape in which a metal material is rolled to have a first elastic force to restore a cylinder having a diameter larger than the inner cylindrical side diameter of the dielectric, and the inner electrode is fitted to the inner side surface of the dielectric with the first elastic force. It is located so as to be tightly coupled,

   The external electrode has a shape in which a metal material is rolled to have a second elastic force to restore a cylinder having a diameter smaller than the outer cylindrical outer diameter of the dielectric, and the external electrode is fitted to the outer side surface of the dielectric with the second elastic force. Plasma generator using dielectric barrier discharge, positioned to be in close contact with each other.
2. A dielectric having an open one end and a closed other end, and a side portion formed in a hollow cylindrical shape;

   An internal electrode made of a porous metal material having a plurality of first through holes and surrounding an inner side surface of the dielectric;

   An external electrode made of a porous metal material having a plurality of second through holes and surrounding an outer side surface of the dielectric material;

   An insulating support portion sealingly supporting one end of the dielectric material;

   An electrode portion penetrating the insulating support portion and connected to the internal electrode; And

   Includes; a power supply for applying a high voltage to the electrode portion,

   The internal electrode has a larger area than the first through holes than the total area formed by the first through holes,

   The external electrode has a smaller area than the second through holes than the total area formed by the second through holes,

   The first through hole and the second through hole have a different shape and size, a plasma generating apparatus using a dielectric barrier discharge.
3. The method according to claim 1 or 2,

   The electrode portion is formed by extending a portion of the end of the inner electrode is bent to the center of the dielectric;

   A through hole formed at an end of the extension; And

   Containing; through the through-hole through the fastening member is fastened to the insulating support;

   Plasma generator.
4. The method according to claim 1 or 2,

   The first through hole has a circular shape,

   The second through hole has a polygonal shape, a plasma generating apparatus using a dielectric barrier discharge.
5. The method according to claim 1 or 2,

   The second through hole is a polygonal shape including an acute angle, a plasma generating apparatus using a dielectric barrier discharge.
6. The method according to claim 1 or 2,

   The second through-hole has a rhombus shape, and a plasma generating apparatus using a dielectric barrier discharge is disposed such that a vertex of an acute angle faces one end and the other end of the dielectric, and an apex of the obtuse angle faces both sides of the dielectric.
7. The method according to claim 1 or 2,

   The second through-hole has a rhombus shape, and the lengths of the four sides are 1 mm or less, respectively.
8. The method according to claim 1 or 2,

   The first through hole has a larger hole size than the second through hole, a plasma generating apparatus using a dielectric barrier discharge.
9. An air purifying apparatus comprising at least one plasma generating apparatus according to claim 1 or 2.
10. The method of claim 9,

    And at least one coupling portion thread-coupled to the electrode portion of the plasma generator.
11. The method of claim 9,

    An air purifying device that is a portable type or an air conditioning duct type inserted into an air conditioning duct.
12. The method of claim 11,

    The air conditioning duct type, further comprising a handle on both sides, the air purifying device.
13. The method of claim 9,

    filter;

    Pan; And

    Control unit; further comprising, an air purifying device.
14. The method of claim 9,

    Air purifier, controlled by a central control.
15. A sensor device for measuring indoor air condition;

    The air purifying device according to claim 9; And

    A control device for controlling the operation of the air purifying device according to the information measured by the sensor device.
16. The method of claim 15,

    The sensor device and the air purification device are installed in a number of indoor spaces,

    The control device individually controls each air purifying device according to state information measured by a sensor device in each room, an air quality management system.
17. The method of claim 15,

    The air purifying device is an air quality management system selected from one or more of a portable type and an air conditioning duct type inserted into the air conditioning duct.
18. The method of claim 15,

    An air quality management system installed in a hospital that prevents or reduces infection in the hospital.
19. The method of claim 15,

    An air quality management system further comprising a display device that displays the display information generated by the control device and provides it to the administrator.
20. The method of claim 15,

    A terminal used by a user related to each indoor space, the air quality management system further comprising a user terminal displaying display information generated by a control device.

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