KR102532437B1 - Dbd plasma air cleaner - Google Patents

Abstract

The present invention relates to an air purifier using DBD plasma technology.
The DBD plasma air purifier according to the present invention includes a plate-shaped anode portion; a ring-shaped negative electrode portion surrounding the positive electrode portion at a position spaced apart from the positive electrode portion; a first case including a first positive electrode support portion formed to support one side of the cathode portion and a first cathode portion support portion formed to support one side of the cathode portion; A second positive electrode support part disposed on the opposite side of the first case with respect to the positive electrode part and the negative electrode part and formed to support the other side of the positive electrode part, and a second negative electrode part formed to support the other side of the negative electrode part a second case having a support; and a dielectric part formed in the shape of a hollow cylinder or hollow polygonal column and disposed between the anode part and the cathode part.

Description

DBD Plasma Air Cleaner {DBD PLASMA AIR CLEANER}

The present invention relates to an air purifier using DBD plasma technology.

Recently, as air pollution including fine dust has emerged as a social problem, various attempts have been made to solve such air pollution. Air pollution is caused by particulate matter (PM) suspended in the air, and most of these particulate matter are generated from combustors used in industrial activities and transportation.

Therefore, in order to remove these pollutants, plasma technology has been applied to various air pollution reduction technologies such as electric precipitators, desulfurization facilities, low NOx burners, and SCR (Selective Catalyst Reduction) since the 1900s to improve existing technologies or has been studied as a replacement technology.

Pollutant removal technology (or harmful gas treatment technology) using plasma includes harmful gas treatment technology using low-temperature plasma, harmful gas treatment technology using DBD (Dielectric Barrier Discharge) plasma, rotary gliding arc plasma There is a harmful gas treatment technology using .

Republic of Korea Patent Publication No. 10-2020-0032387 (2020.03.26.) discloses an air purifier that purifies air with a filter and a functional filter to which the above dielectric barrier discharge is applied. However, the air purifier disclosed in the above patent document does not present a specific structure of the dielectric barrier discharge filter, and has limitations in that it is approached only conceptually.

An object of the present invention is to provide a new form factor of an air purifier to which DBD plasma is applied.

The present invention is to propose a structure capable of achieving miniaturization of an air purifier to which DBD plasma is applied.

An object of the present invention is to propose a DBD plasma air purifier having a high-performance air cleaning function and a deodorizing function by sequentially combining a DBD plasma filter, a HEPA filter, and an activated carbon filter.

Furthermore, an object of the present invention is to provide convenient usability to users by simplifying the structure compared to a method using a conventional DBD plasma air purifier.

The DBD plasma air purifier according to the present invention includes a plate-shaped anode portion; a ring-shaped negative electrode portion surrounding the positive electrode portion at a position spaced apart from the positive electrode portion; a first case including a first positive electrode support portion formed to support one side of the cathode portion and a first cathode portion support portion formed to support one side of the cathode portion; A second positive electrode support part disposed on the opposite side of the first case with respect to the positive electrode part and the negative electrode part and formed to support the other side of the positive electrode part, and a second negative electrode part formed to support the other side of the negative electrode part a second case having a support; and a dielectric part formed in the shape of a hollow cylinder or hollow polygonal column and disposed between the anode part and the cathode part.

The first positive electrode support portion and the second positive electrode support portion are formed in a cylindrical or polygonal column shape, and the first negative electrode support portion and the second negative electrode support portion are formed in a hollow cylinder or hollow polygonal column shape, The first positive electrode support portion or the second positive electrode support portion may surround the first positive electrode support portion or the second positive electrode support portion at a distance from the first positive electrode support portion or the second positive electrode support portion.

The first case and the second case further include a plurality of connection parts formed at positions spaced apart from each other along an outer circumference of the first positive electrode support part or an outer circumference of the second positive electrode support part, and the plurality of connection parts Each protrudes in a radial direction from the outer circumference of the first anode support portion and is connected to the inner circumferential surface of the first cathode support portion, or protrudes in a radial direction from the outer circumference of the second anode portion support portion to form the second cathode support portion. It is connected to the inner circumferential surface of, characterized in that a flow path portion is formed between the first anode support portion and the first cathode portion support portion, and between the second anode portion support portion and the second cathode portion support portion.

The anode part may include an electrode hole; a through hole formed around the electrode hole; and a second case coupling hole formed around the electrode hole and formed at a different position from the through hole, wherein the first anode support part includes an electrode hole formed at a position facing the electrode hole; and an anode coupling hole formed around the electrode hole of the first anode support portion and formed at a position facing the through hole, wherein the second anode support portion is formed at a position facing the through hole. A first positive electrode coupling hole; and a second anode coupling hole formed at a location different from the first anode coupling hole and formed at a location facing the second case coupling hole, wherein the first anode coupling hole has the first anode coupling hole. A first screw inserted through the anode portion coupling hole of the auxiliary support portion and the through hole of the anode portion is fastened, and the second case coupling hole is inserted through the second anode portion coupling hole in the opposite direction to the first screw. It is characterized in that the second screw is fastened.

An electrode hole is formed on an outer circumferential surface of the cathode part, and the electrode hole of the cathode part is opened in a direction crossing the stacking direction of the first case, the anode part, and the second case.

The first case and the second case each include a dielectric support part formed to support one end and the other end of the dielectric part, and the dielectric support part is formed inside the first cathode part support part or the second cathode part support part. And, it is characterized in that it has a step difference with the first cathode part support part or the second cathode part support part.

The anode part further includes a plurality of projections protruding in a radial direction from an outer circumferential surface, the plurality of projections are formed at positions spaced apart from each other along an outer circumference of the anode part, and the plurality of projections are in contact with the inner circumferential surface of the dielectric part characterized by

The first case and the second case further include a plurality of connection portions formed at positions spaced apart from each other along an outer circumference of the first positive electrode support portion or an outer circumference of the second positive electrode support portion, wherein the connection portion is The first case and the second case are formed at positions spaced apart from each other along the outer circumferences of the first positive electrode support portion and the second positive electrode support portion, and the projections are formed on the first case, the positive electrode portion, and the second positive electrode support portion. 2 It is characterized in that it is formed at a position overlapping with the connection portion in the stacking direction of the case.

The second case includes a flange portion, the flange portion is formed to have an outer circumference larger than an outer circumference of the second cathode support portion, and the second cathode support portion forms a circle or polygon having a predetermined size from the flange portion. It is characterized by protruding along.

The flange portion of the second case has a screw hole on a surface spaced apart from the second cathode support portion, and the flange portion of the second case is coupled with the screw hole, the HEPA filter, and the activated carbon filter in a row to form a three-stage filter structure. It is characterized by having

According to the new form factor structure of an air purifier to which DBD plasma is applied according to the present invention, the DBD plasma filter includes a first case and a second case supporting an anode part, a cathode part, and a dielectric part at both sides, and the first case And the second case can firmly fix the anode part, the cathode part, and the dielectric part.

According to the structure of the new form factor of the air purifier to which DBD plasma is applied according to the present invention, the DBD plasma filter, the HEPA filter, and the activated carbon filter purify air in three steps. Based on the air flow, the DBD plasma filter removes particulate and gaseous harmful substances in the air, such as viruses, bacteria, and carcinogens. The HEPA filter removes fine dust in the air. Eliminates odors that may arise from Therefore, the DBD plasma air purifier proposed in the present invention provides a high-performance air cleaning effect as well as a deodorizing effect.

In addition, according to the present invention, since the air can be purified while the air flows in one direction by disposing a fan on one side of the filter assembly composed of three stages as described above, the size of the air purifier can be miniaturized. Accordingly, the DBD plasma air purifier provided by the present invention can be applied even when the installation space is not sufficient, such as in a vehicle, and thus has high utilization.

The DBD plasma air purifier according to the present invention is equipped with a HEPA filter and an activated carbon filter in addition to the DBD plasma filter, can remove fine dust, can remove viruses such as Phi-X 174, and can remove carcinogens such as benzene and toluene. can be additionally removed.

In addition, in the DBD plasma air purifier according to the present invention, the DBD plasma filter, the HEPA filter, and the activated carbon filter are arranged as unit modules, so that the user can easily replace or maintain the filters.

1 is a perspective view of a DBD plasma air purifier.
Figure 2 is a view showing the inside of the DBD plasma air purifier.
Figure 3a is a perspective view viewed from one side of the DBD plasma filter.
Figure 3b is a perspective view viewed from the other side of the DBD plasma filter.
Figure 4a is a perspective view of the DBD plasma filter disassembled in the axial direction and viewed from one side.
Figure 4b is a perspective view of the DBD plasma filter disassembled in the axial direction and viewed from the other side.
FIG. 5 is a cross-sectional view of the DBD plasma filter of FIG. 3A cut in an AA'direction;
6 is a cross-sectional view of the DBD plasma filter of FIG. 3A cut in a BB'direction;

Hereinafter, the DBD plasma air purifier will be described in more detail with reference to the drawings.

In this specification, the same or similar reference numerals are assigned to the same or similar components even in different embodiments, and overlapping descriptions thereof will be omitted.

In describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions thereof will be omitted.

The accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and technical scope of the present invention are included. It should be understood to include water or substitutes.

In the following description, singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

1 is a perspective view of a DBD plasma air purifier 10, and FIG. 2 is a view showing the inside of the DBD plasma air purifier 10.

1 and 2, the DBD plasma air purifier 10 has a three-stage filtering structure that purifies polluted air using a DBD plasma filter 100, a HEPA filter 200, and an activated carbon filter 300. are provided

In addition, the DBD plasma air purifier 10 includes a circuit unit 500 for applying voltage or current to the DBD plasma filter 100 and a fan 400 for discharging purified air to the outside.

In addition, the DBD plasma air purifier 10 includes a housing 18 accommodating the DBD plasma filter 100, the HEPA filter 200, and the activated carbon filter 300. At least one air inlet 16 for intake of polluted air may be provided on one side of the housing 18, and at least one air outlet 11 for discharging purified air on the other side of the housing 18. can be provided.

The position and shape of the air inlet 16 and the position and shape of the air outlet 11 may vary depending on the design of the DBD plasma air purifier, and are not particularly limited in the present invention. For example, some of the plurality of holes 12 , 13 , 14 , and 15 formed in the housing 18 may be used as an air inlet and some other may be used as an air outlet.

However, in consideration of the fact that air is purified while sequentially passing through the DBD plasma filter 100, the HEPA filter 200, and the activated carbon filter 300, the air inlet 16 is positioned adjacent to the DBD plasma filter 100. , The air outlet 11 is formed adjacent to the activated carbon filter 300.

On one side of the DBD plasma air purifier 10, contaminated air is sucked through the air inlet 16 and purified through the DBD plasma filter 100, the HEPA filter 200, and the activated carbon filter 300. The purified air is discharged out of the housing 18 through the air outlet 11 .

The DBD plasma filter 100 may generate a dielectric barrier discharge (DBD). The dielectric barrier discharge is characterized by being able to discharge purified gas (or clean gas) by ionizing the exhaust gas passing through the DBD plasma filter 100 .

For example, the DBD plasma filter 100 according to the present invention can ionize pollutants such as NOx and SOx using ion molecules generated by dielectric barrier discharge, thereby converting them into safe materials.

The HEPA filter 200 may be, for example, H13 grade or higher, and may be disposed next to the DBD plasma filter 100 based on air flow. The HEPA filter 200 is a high-performance filter capable of filtering out most of the extremely fine particles, and the size of droplets is about 0.5㎛. there is.

The activated carbon filter 300 may be disposed next to the HEPA filter 200 based on air flow. The activated carbon filter 300 is a carbonaceous material with strong adsorption power, and has a wide pore (micropore) area of about 100 pyeong per 1g of charcoal. there is.

The fan 400 generates a pressure difference in the air so that air is sucked into the air inlet 16, and the air purified by the DBD plasma filter 100, the HEPA filter 200, and the activated carbon filter 300 is transferred to the DBD plasma. It is discharged to the outside of the housing 18 of the air purifier 10. The fan 400 may be disposed after the activated carbon filter 300 based on air flow, but may also be located upstream of the DBD plasma filter 100 if necessary.

The circuit unit 500 may use a PCB or PBA circuit to which low-voltage and high-performance plasma technology is applied, and may use cables 510 and 520 to apply voltage or current to the DBD plasma filter 100. ) is electrically connected to

Among the cables 510 and 520 electrically connecting the circuit unit 500 and the DBD plasma filter 100, one cable 510 or 520 is coupled to the first case 110 of the DBD plasma filter 100 It is connected to the anode part 130 of the DBD plasma filter 100 by the electrode screw 113a (see FIGS. 2 and 3A). And, another cable 520 is connected to the cathode part 140 exposed on the outer circumferential surface of the DBD plasma filter 100 (see FIGS. 2 and 3A). The DBD plasma filter 100 is electrically connected to the circuit unit 500 by cables 510 and 520 .

The location of the circuit unit 500 is determined to be a location that does not obstruct the flow of air generated by the fan 400 . For example, the cross-sectional area of the area occupied by the circuit unit 500 may be smaller than the cross-sectional area of the area occupied by the fan 400 . Alternatively, elements mounted on the PCB of the circuit unit 500 may be spaced apart from each other so as not to block the flow of air by the fan 400 .

In order to improve the air filtration performance and deodorization performance of the DBD plasma air purifier 10, the air must pass through all of the DBD plasma filter 100, the HEPA filter 200, and the activated carbon filter 300, and prevent it from escaping in the middle. Should be. To this end, the DBD plasma filter 100, the HEPA filter 200, and the activated carbon filter 300 are sequentially closely coupled, and the DBD plasma filter 100, the HEPA filter 200, and the activated carbon filter 300 are coupled to each other form a continuous flow path. In addition, the continuous flow path is configured to pass through only the activated carbon filter 300 without passing out from the middle of the DBD plasma filter 100, the HEPA filter 200, and the activated carbon filter 300.

Next, the detailed structure of the DBD plasma filter 100 will be described.

Figure 3a is a perspective view as seen from one side of the DBD plasma filter 100, Figure 3b is a perspective view as seen from the other side of the DBD plasma filter 100, Figure 4a is a disassembled DBD plasma filter 100 in the axial direction and one It is a perspective view viewed from the side, and FIG. 4B is a perspective view viewed from the other side after disassembling the DBD plasma filter 100 in the axial direction.

3a, 3b, 4a, and 4b, the DBD plasma filter 100 includes an anode part 130, a cathode part 140, a dielectric part 120, a first case 110, and a second case ( 150) is provided.

The anode part 130 has a plate shape and is formed in a cylindrical or polygonal column shape. A first positive electrode support portion 111 for supporting one side of the positive electrode portion 130 is formed in the first case 110 to be described later, and the other side of the positive electrode portion 130 is formed in the second case 150. A second anode support portion 151 for supporting is formed. The anode portion 130 is disposed between the first anode portion support portion 111 and the second anode portion support portion 151, and the first anode portion support portion 111 ) and the second anode support part 151.

The anode part 130 is in close contact with the first anode part support part 111 and the second anode part support part 151 . In addition, the anode part 130 is screwed to the first cathode part support part 111 of the first case 110 and the second anode part support part 151 of the second case 150 . Therefore, the anode portion 130 is not simply supported by the first anode portion support portion 111 and the second anode portion support portion 151, but is supported by the first anode portion support portion 111 and the second anode portion support portion 151. It is firmly fixed between, and does not rotate or change its position.

In addition, the anode part 130 has a plurality of protrusions 131 protruding in a radial direction from the outer circumferential surface of the anode part 130 and contacts the inner circumferential surface of the dielectric part 120 . A plurality of protrusions 131 are formed at positions spaced apart from each other along the outer circumference of the anode portion 130 . For example, the plurality of protrusions 131 may protrude in four different directions, and the distances at which adjacent protrusions 131 are spaced apart from each other along the outer circumference of the anode portion 130 may be the same.

In addition, the plurality of protrusions 131 are connected to the connection portion 117 of the first case 110, and the second case 150 in the stacking direction of the first case 110, the anode portion 130, and the second case 150. ) may overlap with the connection portion 158. The connection part 117 of the first case 110 connects the first cathode part support part 111 and the first cathode part support part 115, and the connection part 117 of the second case 150 connects the second cathode part support part As a configuration connecting the 151 and the second cathode support 152, a detailed description of these will be described later.

An electrode hole 132 is formed in the anode portion 130 . The electrode hole 132 may be formed to pass through the anode part 130 in the stacking direction. However, the electrode hole 132 does not necessarily have to pass through the anode portion 130 , and may be configured as a groove opening toward the first case 110 .

An electrode screw 113a inserted from the side of the first case 110 is inserted into the electrode hole 132 of the anode portion 130, and the electrode screw 113a inserted into the electrode hole 132 of the anode portion 130 is A current or voltage from the circuit unit 500 is applied through the cable 510 . The electrode screw 113a is made of a conductive material, and current or voltage is electrically transmitted to the anode part 130 through the electrode screw 113a.

Through holes 133 and 134 into which coupling screws 112a are inserted are formed around the electrode hole 132 of the anode part 130 . The through holes 133 and 134 are positioned one by one in a radial direction with the electrode hole 132 as the center.

The diameters of the through holes 133 and 134 formed in the anode portion 130 are not constant, but can be divided into relatively large ones (133) and relatively small ones (134). A relatively large through hole 133 and a relatively small through hole 134 may be alternately formed around the electrode hole 132 along an imaginary circumference of a predetermined size.

The reason why the diameters of the plurality of through holes 133 and 134 are different is due to the difference between fastening and passing of the coupling screw 112a. The coupling screw 112a inserted from the side of the first case 110 passes through the anode portion 130 and is coupled to the second anode portion support portion 151 . Therefore, the through hole 133 passing the coupling screw 112a inserted from the side of the first case 110 is larger than the outer diameter of the body of the coupling screw 112a. On the other hand, the coupling screw 155a inserted from the side of the second case 150 is inserted only up to the positive electrode portion 130 and coupled to the positive electrode portion 130 . Therefore, the outer diameter of the through hole 134 coupled to the coupling screw 155a inserted from the second case 150 side is smaller than the outer diameter of the through hole 133 through which the coupling screw 112a passes.

Meanwhile, the negative electrode portion 140 is formed in a ring shape surrounding the positive electrode portion 130 at a position spaced apart from the positive electrode portion 130 . A first cathode support part 115 is formed in the first case 110, which will be described later, and a second cathode support part 152 is formed in the second case 150. It is supported by the auxiliary support part 115 and the second cathode part support part 152 .

The cathode part 140 is disposed between the first cathode part support part 115 and the second cathode part support part 152 . And, accordingly, movement of the cathode part 140 in the stacking direction of the components included in the DBD plasma filter 100 is prevented by the first cathode part support part 115 and the second cathode part support part 152 .

In addition, the anode part 130 and the dielectric part 120 are disposed inside the cathode part 140 . Therefore, movement of the cathode part 140 in a direction crossing the stacking direction is prevented by the anode part 130 and the dielectric part 120 .

An electrode hole 141 is formed on the outer circumferential surface of the cathode part 140, and the electrode hole 141 is in a direction crossing the stacking direction of the first case 110, the anode part 130, and the second case 150. opens towards An electrode screw 141a is inserted into the electrode hole 141 of the cathode part 140, and the electrode screw 141a inserted into the electrode hole 141 of the cathode part 140 is a current or voltage from the circuit unit 500. is authorized The electrode screw 141a is made of a conductive material, and the current or voltage applied to the electrode screw 141a is electrically transmitted to the negative electrode portion 140 .

In the above stacking direction, the height of the cathode unit 140 may be the same as that of the anode unit 130 . However, the height of the cathode part 140 and the height of the anode part 130 do not necessarily have to be the same. However, the dielectric part 120 to be described later has a shape higher than the height of the cathode part 140 or the height of the anode part 130 in the stacking direction to form a dielectric barrier.

The dielectric part 120 is disposed between the anode part 130 and the cathode part 140 and is formed in the shape of a hollow cylinder or a hollow polygonal column. An annular dielectric part 120 is disposed in an annular space formed between the anode part 130 and the cathode part 140 .

A first dielectric support part 116 is formed in the first case 110 to be described later, and a second dielectric support part 153 is formed in the second case 150. One side of the dielectric part 120 is formed in the first case It is supported by the first dielectric support part 116 of (110), and the other side of the dielectric part 120 is supported by the second dielectric support part 153 of the second case 150. Here, one side and the other side of the dielectric unit 120 refer to one side and the other side of the dielectric unit 120 in the above stacking direction.

The first dielectric support part 116 is provided between the first anode part support part 111 and the first cathode part support part 115, and the second dielectric support part 153 is provided between the second anode part support part 151 and the second cathode part support part 153. It is provided between the cathode part support part 152. Since the height of the dielectric part 120 is higher than that of the anode part 130 or the cathode part 140 in the above stacking direction, the dielectric part 120 is connected to the first anode part support part 111 of the first case 110 and the first The cathode part support part 115 faces, and the second cathode part support part 151 and the second cathode part support part 152 of the second case 150 face each other.

The first dielectric support part 116 is formed to have a step difference from the first anode part support part 111 and the first cathode part support part 115 . Therefore, it can be understood as a structure in which an annular groove is formed between the first anode support part 111 and the first cathode support part 115, and the first dielectric support part 116 is formed in the above groove.

Similarly, the second dielectric support part 153 is formed to have a step difference from the second anode part support part 151 and the second cathode part support part 152 . Therefore, it can be understood as a structure in which an annular groove is formed between the second anode support portion 151 and the second cathode support portion 152, and the second dielectric support portion 153 is formed in the upper groove.

The dielectric part 120 may be disposed on one surface of the cathode part 140 , and one surface of the cathode part 140 may be a surface facing the anode part 130 .

The material of the dielectric part 120 may be made of ceramic. The characteristics of ceramic materials are related to the movement of electrons belonging to atoms or ions constituting the material. Ceramics do not conduct electricity because electrons cannot move freely because they are bound to certain ions or atoms. However, when electricity is applied from the outside, the bound electrons undergo rearrangement in response to this, changing their state and moving slightly in the direction of the electric field. At this time, when the degree of confinement of electrons is small, a phenomenon in which electrons move occurs.

On the other hand, the first case 110 includes a first positive electrode support portion 111 supporting one side of the positive electrode portion 130, and a first negative electrode support portion 115 supporting one side of the negative electrode portion 140. ). The first positive electrode support portion 111 is formed in a cylindrical or polygonal column shape, and the first negative electrode portion support portion 115 is formed in a hollow cylinder or polygonal column shape.

Here, if the sizes of the cylinders or polygonal columns are compared, the size of the cylinders or polygonal columns forming the first positive electrode support portion 111 is smaller than the size of the cylinders or polygonal columns forming the first negative electrode support portion 115 .

The first positive electrode support part 111 and the first negative electrode support part 115 are connected to each other by a plurality of connection parts 117 formed at positions spaced apart from each other along the outer circumference of the first positive electrode support part 111. .

The first anode part support part 111 and the first cathode part support part 115 are formed in a connected shape by the plurality of connection parts 117 . In addition, the first positive electrode support portion 111 and the first negative electrode support portion 115 are connected by the plurality of connection portions 117, and the plurality of connection portions 117 are spaced apart from each other, so that the first positive electrode support portion 111 ) and the first cathode support part 115, a passage part 114 through which air passes is provided, and a plurality of passage parts 114 may be provided.

An electrode hole 113 is provided in the first anode support part 111 of the first case 110 , and a through hole 112 is provided around the electrode hole 113 . The electrode hole 113 and the through hole 112 of the first case 110 may be formed in a line and spaced apart from each other, and the electrode hole 113 may be formed between the two through holes 112 .

The electrode screw 113a is inserted into the electrode hole 113 of the first anode support part 111, and the body of the electrode screw 113a passes through the electrode hole 113 and is coupled to the anode part 130. When the coupling of the electrode screw 113a is completed, the head of the electrode screw 113a may protrude from the first anode support 111 . The reason why the head of the electrode screw 113a protrudes is to connect the cable 510 for receiving voltage and current from the circuit unit 500 .

The coupling screw 112a may be coupled to the anode part 130 and the second case 150 through the through hole 112 of the first anode part support part 111 . The coupling screw 112a may be inserted into the first positive electrode support portion 111 of the first case 110, and in this case, the head of the coupling screw 112a protrudes from the first positive electrode support portion 111. It doesn't work. Therefore, the use of the electrode screw 113a and the use of the coupling screw 112a can be distinguished by whether or not they protrude.

The second case 150 has a flange portion 157 on one side (bottom in the drawing). The flange portion 157 is formed to have a larger outer circumference than the outer circumference of the second cathode support portion 152, and the second cathode portion support portion 152 extends from the flange portion 157 toward the first case 110. It is formed protruding along the size of a circle or polygon. In addition, the flange portion 157 may be screwed to the HEPA filter 200 or the activated carbon filter 300 at one side (lower side in the drawing).

The second case 150 includes a second anode support portion 151 supporting the other side of the anode portion 130, and the second anode portion support portion 151 is formed in a cylindrical or polygonal column shape.

The second positive electrode support portion 151 and the second negative electrode support portion 152 are connected to each other by a plurality of connection portions 158 formed at positions spaced apart from each other along the outer circumference of the second positive electrode support portion 151. .

The second anode part support part 151 and the second cathode part support part 152 are formed in a connected shape by the plurality of connection parts 158 . In addition, since the second positive electrode support portion 151 and the second negative electrode support portion 152 are connected by the plurality of connection portions 158 and the plurality of connection portions 158 are spaced apart from each other, the second positive electrode support portion 151 and A passage part 154 through which air passes is provided between the second cathode support part 152, and a plurality of passage parts 154 may be provided.

The second anode support part 151 of the second case 150 has a through hole 155 . A coupling screw 155a capable of coupling the second case 150 and the anode portion 130 is inserted into the through hole 155 of the second anode support portion 151 .

Next, the DBD plasma filter 100 will be further described with reference to cross-sectional views.

FIG. 5 is a cross-sectional view of the DBD plasma filter 100 of FIG. 3A taken in the direction A-A', and FIG. 6 is a cross-sectional view of the DBD plasma filter 100 of FIG. 3A taken in the direction BB'.

Referring to FIG. 5 , it can be seen that the electrode screw 113a inserted into the electrode hole 113 of the first case 110 is coupled to the anode part 130, and the electrode screw 113a is the first case ( 110) protrudes from it. On the other hand, it can be seen that the coupling screw 112a inserted into the through hole 112 of the first case 110 is located inside the first case 110, and the first positive electrode portion support portion of the first case 110 (111), the anode part 130, and the second anode part support part 151 of the second case 150 are coupled. Between the first positive electrode support portion 111 and the first negative electrode support portion 115 of the first case 110 and between the second positive electrode support portion 151 and the second cathode support portion 152 of the second case 150 ) It can be seen that the flow path portion 154, which is an empty space, is formed between.

Referring to FIG. 6 , it can be seen that the coupling screw 155a inserted into the through hole 155 of the second case 150 is located inside the second case 150, and the second case 150 2 The anode part is coupled to the support part 151 and the anode part 130.

The coupling screws 112a and 155a in FIGS. 5 and 6 are coupled to positions spaced apart from each other so as not to overlap each other. On both sides of the first case 110 and the second case 150, coupling screws 112a and 115a are coupled in a direction toward each other to form the anode portion 130, the cathode portion 140, and the dielectric portion 120. The position can be firmly fixed.

Hereinafter, the principle of the DBD plasma filter 100 will be described.

The circuit unit 500 of the DBD plasma air purifier 10 may include a voltage and current supply unit capable of supplying voltage and current, has a predetermined cycle, and has a positive positive voltage to the anode unit 130 and the cathode unit 140. It can be made to repeatedly supply voltage and negative voltage.

When a positive voltage is applied to the anode part 130 and the cathode part 140, the direction of charge moves from the anode part 130 to the cathode part 140, and from the anode part 130 to the cathode part 140. ) may form a radial first electric field radiating toward.

In contrast, when a negative voltage is applied to the anode part 130 and the cathode part 140, the direction of charge movement is from the cathode part 140 to the anode part 130, and from the cathode part 140 A second electric field radiated toward the anode unit 130 may be formed.

Accordingly, the first electric field generated by the circuit unit 500 has opposite directions when a positive voltage is supplied from the circuit unit 500 and when a negative voltage is supplied from the circuit unit 500 .

In addition, when the current supplied from the circuit unit 500 is a direct current, the second electric field having a direction corresponding to that of the first electric field formed by the voltage supplied from the circuit unit 500, the anode unit 130 and It is formed only when a positive voltage is applied to the cathode portion 140 or when a negative voltage is applied to the anode portion 130 and the cathode portion 140 .

In addition, when a voltage is supplied from the circuit part 500, the anode part 130 and the cathode part 140 are connected to the hollow part between the anode part 130 and the cathode part 140 by the dielectric part 120 in the first A first electric field having a direction may be formed.

In addition, when a current is supplied from the circuit part 500, the anode part 130 and the cathode part 140 are connected to the hollow part between the anode part 130 and the cathode part 140 by the dielectric part 120 in the first A second electric field different from the electric field may be formed.

Therefore, the DBD plasma filter 100 causes a dielectric barrier discharge by the formed first and second electric fields, and the dielectric barrier discharge causes plasma chemistry in which a chemical reaction starts as electrons collide with surrounding gas molecules. and the plasma chemistry can depend on the magnitude of the electrical field that supplies them with kinetic energy.

In this way, the greater the intensity of the electric field, the better the plasma chemical reaction, and consequently, the efficiency of purifying the contaminated air can be increased.

In addition, as a magnetic field is generated by adding a variable current to the DBD plasma filter 100, a new wavelength not generated in the existing plasma is generated. A composite wavelength is formed according to the addition of a new wavelength. At this time, the high-performance DBD plasma filter 100 technology can be implemented with the new wavelength generated.

The DBD plasma air purifier described above is not limited to the configuration and method of the above-described embodiments, but the above embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made. .

Claims (10)

plate-shaped anode;
a ring-shaped negative electrode portion surrounding the positive electrode portion at a position spaced apart from the positive electrode portion;
a first case including a first positive electrode support portion formed to support one side of the cathode portion and a first cathode portion support portion formed to support one side of the cathode portion;
A second positive electrode support part disposed on the opposite side of the first case with respect to the positive electrode part and the negative electrode part and formed to support the other side of the positive electrode part, and a second negative electrode part formed to support the other side of the negative electrode part a second case having a support; and
A dielectric part formed in the shape of a hollow cylinder or hollow polygonal column and disposed between the anode part and the cathode part,
The first anode part support part and the second anode part support part are formed in a cylindrical or polygonal column shape,
The first cathode part support part and the second cathode part support part are formed in the shape of a hollow cylinder or hollow polygonal column, and the first anode part is spaced apart from the first cathode part support part or the second cathode part support part. DBD plasma air purifier surrounding the support or the second anode support.
delete According to claim 1,
The first case and the second case further include a plurality of connection portions formed at positions spaced apart from each other along an outer circumference of the first positive electrode support portion or an outer circumference of the second positive electrode support portion,
Each of the plurality of connecting portions protrudes in a radial direction from the outer circumference of the first anode support portion and is connected to the inner circumferential surface of the first cathode support portion, or radially protrudes from the outer circumference of the second anode support portion in the first cathode portion support portion. 2 connected to the inner circumferential surface of the cathode support,
DBD plasma air purifier, wherein a flow path portion is formed between the first anode support portion and the first cathode support portion, and between the second anode portion support portion and the second cathode support portion. plate-shaped anode;
a ring-shaped negative electrode portion surrounding the positive electrode portion at a position spaced apart from the positive electrode portion;
a first case including a first positive electrode support portion formed to support one side of the cathode portion and a first cathode portion support portion formed to support one side of the cathode portion;
A second positive electrode support part disposed on the opposite side of the first case with respect to the positive electrode part and the negative electrode part and formed to support the other side of the positive electrode part, and a second negative electrode part formed to support the other side of the negative electrode part a second case having a support; and
A dielectric part formed in the shape of a hollow cylinder or hollow polygonal column and disposed between the anode part and the cathode part,
The anode part,
electrode hole;
a through hole formed around the electrode hole; and
It is formed around the electrode hole and includes a second case coupling hole formed at a different position from the through hole,
The first anode support part,
an electrode hole formed at a position facing the electrode hole; and
It is formed around the electrode hole of the first anode support portion and includes an anode portion coupling hole formed at a position facing the through hole,
The second anode part support part,
a first anode part coupling hole formed at a position facing the through hole; and
It is formed at a location different from the first anode portion coupling hole and includes a second anode portion coupling hole formed at a location facing the second case coupling hole,
A first screw inserted through the anode coupling hole of the first anode support portion and the through hole of the anode portion is fastened to the first anode portion coupling hole,
The second case coupling hole is fastened with a second screw inserted through the second anode coupling hole in the opposite direction to the first screw. According to claim 4,
An electrode hole is formed on the outer circumferential surface of the cathode,
The electrode hole of the cathode part is open toward the direction crossing the stacking direction of the first case, the anode part, and the second case DBD plasma air purifier. plate-shaped anode;
a ring-shaped negative electrode portion surrounding the positive electrode portion at a position spaced apart from the positive electrode portion;
a first case including a first positive electrode support portion formed to support one side of the cathode portion and a first cathode portion support portion formed to support one side of the cathode portion;
A second positive electrode support part disposed on the opposite side of the first case with respect to the positive electrode part and the negative electrode part and formed to support the other side of the positive electrode part, and a second negative electrode part formed to support the other side of the negative electrode part a second case having a support; and
A dielectric part formed in the shape of a hollow cylinder or hollow polygonal column and disposed between the anode part and the cathode part,
The first case and the second case each include a dielectric support portion formed to support one end and the other end of the dielectric portion,
The dielectric support is formed inside the first cathode support or the second cathode support, and has a step with the first cathode support or the second cathode support. plate-shaped anode;
a ring-shaped negative electrode portion surrounding the positive electrode portion at a position spaced apart from the positive electrode portion;
a first case including a first positive electrode support portion formed to support one side of the cathode portion and a first cathode portion support portion formed to support one side of the cathode portion;
A second positive electrode support part disposed on the opposite side of the first case with respect to the positive electrode part and the negative electrode part and formed to support the other side of the positive electrode part, and a second negative electrode part formed to support the other side of the negative electrode part a second case having a support; and
A dielectric part formed in the shape of a hollow cylinder or hollow polygonal column and disposed between the anode part and the cathode part,
The anode part further comprises a plurality of protrusions protruding in a radial direction from the outer circumferential surface,
The plurality of protrusions are formed at positions spaced apart from each other along the outer circumference of the anode portion,
The plurality of protrusions are in contact with the inner circumferential surface of the dielectric part,
The first case and the second case further include a plurality of connection portions formed at positions spaced apart from each other along an outer circumference of the first positive electrode support portion or an outer circumference of the second positive electrode support portion,
The connecting portion is formed at a position spaced apart from each other along the outer circumferences of the first positive electrode support portion and the second positive electrode support portion of the first case and the second case,
The protrusion is formed at a position overlapping the connecting portion in the stacking direction of the first case, the anode portion, and the second case.
delete plate-shaped anode;
a ring-shaped negative electrode portion surrounding the positive electrode portion at a position spaced apart from the positive electrode portion;
a first case including a first positive electrode support portion formed to support one side of the cathode portion and a first cathode portion support portion formed to support one side of the cathode portion;
A second positive electrode support part disposed on the opposite side of the first case with respect to the positive electrode part and the negative electrode part and formed to support the other side of the positive electrode part, and a second negative electrode part formed to support the other side of the negative electrode part a second case having a support; and
A dielectric part formed in the shape of a hollow cylinder or hollow polygonal column and disposed between the anode part and the cathode part,
The second case has a flange portion,
The flange portion is formed to have an outer circumference greater than the outer circumference of the second negative electrode support portion,
The second negative electrode support portion protrudes from the flange portion along a circle or polygonal shape of a predetermined size,
The flange portion of the second case has a screw hole on a surface spaced apart from the second cathode support portion, and the flange portion of the second case is coupled with the screw hole, the HEPA filter, and the activated carbon filter in a row to form a three-stage filter structure. Eggplant DBD Plasma Air Purifier.
delete

Images