KR20200079911A - Air sterilization deodorizer using high efficiency plasma, uv and catalyst - Google Patents

Abstract

The present invention relates to an air sterilization deodorizer and, more specifically, to an air sterilization deodorizer using high-efficiency plasma, UV radiation and a catalyst to improve sterilization and deodorization capabilities for a virus, bacteria, mildew, etc., in air by coupling a photocatalyst filter and plasma of atmospheric-pressure large-area dielectric barrier discharge (DBD). The air sterilization deodorizer using high-efficiency plasma, UV radiation and a catalyst comprises: a suction unit (20) to draw air into a case (10); a dust filter unit (30) to remove dust included in air sucked by the suction unit; a plasma sterilization unit (40) to create an OH radical to firstly sterilize air passing through the dust filter unit (30); a photocatalyst filter (50) to apply UV radiation to air passing through the plasma sterilization unit (40) to secondly sterilize the air; and an active species filter (60) to absorb remaining active species from air passing through the photocatalyst filter (50).

Description

Air sterilization deodorizer using high efficiency plasma, UV and catalyst {AIR STERILIZATION DEODORIZER USING HIGH EFFICIENCY PLASMA, UV AND CATALYST}

The present invention relates to an air sterilization deodorizer, more specifically, a plasma of a high-pressure atmospheric large-area dielectric barrier discharge (DBD) and a photocatalytic filter are combined, a high-efficiency plasma capable of sterilizing viruses, bacteria and fungi in the air, It relates to air sterilization deodorizer using UV and catalyst.

Plasma is a core technology of semiconductor manufacturing technology and has long contributed to the domestic industry. In recent years, plasma technology has been applied to medical industry, beauty industry, and food industry to expand the scope of application. For example, various treatment devices using plasma have emerged, and in particular, viruses and bacteria are utilized by using active species generated from atmospheric corona plasma or photocatalysts to sterilize viruses and bacteria in the air. It is sterilized or deodorized.

However, such a corona plasma method has a problem that the active species generated are local, non-uniform, and difficult to adjust, and the photocatalytic method has a problem that it takes a lot of time to sterilize and deodorize because the density of the active species is low.

In addition, as the source for generating plasma in a conventional sterilizer or deodorizer using plasma is made of a material having rigidity, there is a problem in that it is not easy to deform into a shape according to a user's use.

Korean Patent Registration Publication No. 10-1632158 (2016.06.14) Korean Patent Publication No. 10-2010-0056858 (2010.05.28)

Therefore, the present invention has been devised to solve the above-described conventional problems, and the object of the present invention is a high-efficiency plasma, UV and air sterilization using UV and catalyst that can improve sterilization and deodorization power by combining plasma and a photocatalyst filter. In providing odor.

In addition, another object of the present invention is to provide an air sterilization deodorizer using a flexible plasma source capable of manufacturing various types of plasma sources because the shape of the plasma source generating the plasma is free.

The present invention may include the following examples to achieve the above object.

In an embodiment of the present invention, a case having an intake port through which external air is sucked, a discharge port through which purified air is discharged, a suction section for sucking air into the case, and dust contained in the air sucked in from the suction section are removed. The dust filter part to be generated, and the plasma sterilization part to firstly sterilize the air passing through the dust filter part by generating OH radicals, and the photocatalytic filter and the air passing through the photocatalyst filter to perform secondary sterilization by applying UV to the air passing through the plasma sterilization part It can provide a high-efficiency plasma, UV and air sterilization deodorizer using a catalyst containing an active species filter to absorb the residual active species in the.

Therefore, the present invention has an effect of obtaining improved sterilization and deodorizing power compared to a conventional plasma type sterilizer and a photocatalytic filter due to a combination of a plurality of components such as a plasma, a photocatalyst filter, and an active species filter.

In addition, the present invention has the effect of improving the safety because the plasma source can be manufactured in a flexible structure and can be modified into various shapes, and the risk of damage due to external impact or pressure can be prevented.

1 is a simplified diagram of a high-efficiency plasma, UV and air sterilization deodorizer using a catalyst according to the present invention.
2 is a diagram briefly showing a plasma source.
3 is a plan view and a cross-sectional view of FIG. 2.
4 is a view showing another embodiment of the plasma source.
5 is a view showing a flexible plasma source.
6 is a view showing an embodiment of a flexible plasma source.

The present invention can be variously modified and have various embodiments, but specific embodiments will be illustrated in the drawings and described in detail. This is not intended to limit the present invention to specific embodiments, but to any one of all modifications, equivalents, or substitutes included in the spirit and scope of the present invention for connecting and/or fixing structures extending in different directions. It should be understood as applicable.

The terms used herein are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms “include” or “have” are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

In addition, in the description of the present invention, when it is determined that detailed descriptions of related known technologies may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

Hereinafter, a preferred embodiment of a high-efficiency plasma, UV and air sterilization deodorizer using a catalyst according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a simplified diagram of a high-efficiency plasma, UV and air sterilization deodorizer using a catalyst according to the present invention.

Referring to FIG. 1, the present invention is included in a case 10 made of a metal material or a plastic material, a suction part 20 for sucking air into the case 10, and air sucked from the suction part 20 Dust filter unit 30 for removing the dust, plasma sterilization unit 40 for generating air and passing through the dust filter unit 30 by generating plasma radicals, and air passing through the plasma sterilization unit 40 A photocatalyst filter 50 that performs secondary sterilization by applying a UV having a wavelength of 200 nm or more to the photocatalyst 51 and an active species filter 60 that absorbs residual active species from the air that has passed through the photocatalyst filter 50 It includes.

In addition, the present invention, the power supply unit 71 for supplying power, the operation switch 80 for the user's operation, the plasma sterilization unit 40 and the photocatalyst filter 50 according to the command output from the operation switch 80 and A control unit 72 for controlling the suction unit 20, a power supply unit 71 for supplying power, and a sensor unit 90 for measuring air pollution (eg, one or more of fine dust, flame, smoke, gas) ) May be further included.

The case 10 is made of, for example, at least one metal or plastic material of Cu, Al, Ti, and W. Here, the case 10 is formed with a suction port 11 for sucking air, and a discharge port 12 for discharging sterilized and deodorized air, and a flow path extending from the suction port 11 to the discharge port 12 may be formed. . The flow path is formed such that the above-described dust filter unit 30 and the plasma sterilization unit 40, the photocatalyst filter 50, and the active species filter 60 are sequentially connected.

The suction unit 20 may include, for example, a suction fan 21 that rotates at a rotational speed set by the control of the control unit 72 to suck outside air, and a fan motor 22 that drives it. . Here, the suction fan 21 is rotated according to the rotation conditions set in multiple stages under the control of the control unit 72 to suck in the external air. For example, the control unit 72 increases the suction amount of external air when the indoor air pollution level is greater than or equal to a set condition according to the detection signal of the sensor unit 90, and decreases the suction amount of external air when the air pollution degree is low. Alternatively, the reference value can be maintained or stopped.

That is, the suction fan 21 and the fan motor 22 may adjust the intake amount of the indoor air as the control unit 72 is driven for each set condition according to the degree of contamination of the indoor air.

The dust filter unit 30 includes a curve filter 31 for removing large dust and a heaper filter 32 for removing fine dust (eg, 2.5 µm or more). Here, the curve filter 31 and the heffer filter 32 sequentially remove dust and fine dust contained in the air sucked by the suction fan 21. That is, the curve filter 31 and the heaper filter 32 are installed at the tip of the flow path extending from the suction port 11 or the suction port 11 of the case 10.

The plasma sterilization unit 40 may include a plasma source 41 that generates OH radicals to remove bacteria, viruses, and/or fungi, and a moisture injector 42 that supplies moisture to the plasma source 41. .

The moisture injector 42 is provided with, for example, a solid polymer electrolyte membrane, moves oxygen and hydrogen ions decomposed on the anode side to the cathode, and hydrogen ions transferred to the cathode are released as they pass through the membrane and are released into the air. And reacts to generate water vapor. Such water vapor is provided to the plasma source 41.

Discharge inside the plasma source 41 in the air generates active species such as OH radicals, O radicals, NO, O ³ , and OH radicals (H ₂ O + e) using the moisture supplied by the moisture injector 42. → OH + H) is generated. The OH radical primarily sterilizes viruses, bacteria, and fungi contained in the air that has passed through the dust filter unit 30. Here, the detailed configuration of the plasma source 41 will be described later with reference to FIGS. 2 to 5.

In the photocatalyst filter 50, a photocatalyst 51 is installed around a flow path through which primary sterilized air is passed through the plasma sterilization unit 40, and a UV lamp 52 for irradiating 200 nm or more UV is installed in the center. . The UV lamp 52 is turned on by the control of the control unit 72 and transmits ultraviolet light to the photocatalyst 51, and the ultraviolet light transmits the O ³ oxygen-active species generated from the plasma source to O ₂ and O (O ₃ +UV→O. ₂ + O).

As is known herein, the oxidation potential of the oxygen atoms (O, O ₂ ) decomposed by the UV lamp 52 is higher than that of O _{3 and} has high sterilizing power. That is, the photocatalyst filter 50 can increase the sterilization effect on the secondary sterilization as the higher sterilization power after the primary sterilization in the plasma sterilization unit 40.

The active species filter 60 absorbs the active species (eg, O ₃ ) remaining in the secondary sterilized air through the photocatalyst filter 50. To this end, the active species filter 60 may form a structure in which activated carbon particles are filled in a nonwoven fabric in which activated carbon is adsorbed, or in a box in which micropores are formed.

The present invention discloses a more specific description of the plasma source 41 among the above structures.

FIG. 2 is a simplified view of the plasma source 41, and FIG. 3 is a plan view and a cross-sectional view of FIG. 2.

2 and 3, the plasma source 41 includes an insulating dielectric sheet 411, a plurality of metal electrodes 412 buried in the dielectric sheet 411 and electrically connected to each other, and a dielectric sheet And ground electrodes 413 and 413 ′ having a spaced apart from 411 and extending.

The dielectric sheet 411 supports a plurality of metal electrodes 412 embedded therein, for example, in a shape extending between the ground electrodes 413 and 413' and spaced apart therebetween. More specifically, when the first ground electrode 413 is formed in the center as shown in FIGS. 2 and 3, the dielectric sheet 411 is spaced apart from the first ground electrode 413. To form, both ends are interconnected to form a cylindrical shape with open front and rear.

Here, the spaced apart is an area where active species are generated as discharge areas 414 and 414' where plasma discharge is generated. That is, the discharge region primarily sterilizes the air sucked by the suction fan 21.

2 and 3, the ground electrode 413 is a first ground electrode 413 extending from the center and connected to the power supply 71 to form a discharge region spaced apart from the dielectric sheet 411 at the center. And, it may include a second ground electrode 413' extending in a cylindrical shape that is opened in the front and rear from the outside of the dielectric sheet 411.

When the first ground electrode 413 and the second ground electrode 413' are respectively formed inside and outside the center of the dielectric sheet 411, active species are generated on the inner and outer sides of the dielectric sheet 411, respectively. Discharge regions 414 and 414' may be formed.

Alternatively, the ground electrodes 413 and 413 ′ may also form only the first ground electrode 413 to have a spaced apart from the center of the cylindrical dielectric sheet 411 as illustrated in FIG. 4.

A plurality of metal electrodes 412 are mutually divided and embedded in the inner surface of the dielectric sheet 411. Here, the metal electrodes 412 are spaced apart from each other, and may be manufactured in a rod, rod, or plate shape extending from one end to the other, and electrically connected to each other.

For example, the power supply unit 71 applies a high frequency of 1KHz to 50MHz, 100V to 1MV to the metal electrode 412, and discharge area 414 between the dielectric sheet 411 and the ground electrodes 413 and 413', 414'). Here, the center diameter of the dielectric sheet 411 is preferably set within 0.5 to 10 mm. The numerical limitation is calculated within a range that can maximize the primary sterilization effect through correlation with the applied high frequency.

Here, the metal electrode 412 may be formed of a conductive metal (eg, copper wire) made of a flexible material capable of bending and bending. In addition, the dielectric sheet 411 may also be made of any one of rubber, silicone, paper, plastic, and/or fiber materials having a dielectric constant of 3 to 10 that can bend or bend. The flexible plasma source 41 will be described with reference to FIGS. 5 and 6.

5 is a view showing a flexible plasma source, and FIG. 6 is a view showing an embodiment of a flexible plasma source.

First, referring to FIG. 5, the flexible plasma source 41 is embedded in a dielectric sheet 411 made of a plastic, rubber, or fiber material having a dielectric constant of 3 to 10 that can bend or bend, and a dielectric sheet 411. It includes a plurality of metal electrodes 412.

Here, the dielectric sheet 411 may be selected from plastic, rubber, silicone, paper, or fiber materials having a dielectric constant of 3 to 10 and capable of bending or bending.

A plurality of metal electrodes 412 extend in a thin plate shape as shown, and are embedded in the dielectric sheet 411. Alternatively, the metal electrode 412 may be formed by, for example, a copper wire divided into a plurality of pieces being embedded inside the dielectric sheet 411.

That is, the flexible plasma source 41 may be formed of a flexible dielectric sheet 411 and a metal electrode 412 to deform the plasma source 41 into various shapes. For example, in FIG. 2, the plasma source 41 is formed in a cylindrical shape, but when the flexible plasma source 41 is applied, the plasma source 41 may be manufactured as an oval, rhombus, or other shape.

Here, the outer side of the flexible plasma source 41 is a metal such as tungsten or titanium, which is formed of a second ground electrode 413' that forms a spaced apart discharge region, or is made of plastic material that is in close contact with the outer surface of the dielectric sheet 411. It can be made of a single cylinder.

In addition, it is preferable that the second ground electrode 413' and the outer cylinder made of plastic are kept rigid to prevent shape deformation of the inner flexible dielectric sheet 411.

In addition, the present invention can provide a plasma source 41 having a structure as shown in FIG. 6 using a flexible plasma source 41.

Referring to FIG. 6, another embodiment of the present invention includes a first dielectric sheet 411 in which a metal electrode 412 is embedded, a second dielectric sheet 411', a first dielectric sheet 411, and a second dielectric. And a ground electrode 413 provided between the sheets 411'.

The first dielectric sheet 411 and the second dielectric sheet 411', for example, are divided into multiple pieces from the inside, but a metal electrode 412 made of copper rods, copper plates, or copper wires that are electrically connected to each other is embedded. .

Here, the outer surface of the first dielectric sheet 411 and the inner surface of the second dielectric sheet 411 ′ may be installed such that a metal 2nd ground electrode 413 ′ or a plastic outer cylinder is in close contact.

The ground electrode 413 is extended to have a space spaced between the first dielectric sheet 411 and the second dielectric sheet 411', respectively, to form a discharge region 414 therebetween.

That is, the first dielectric sheet 411 is spaced apart from the upper/one side of the ground electrode 413, and the second dielectric sheet 411' is stacked or arranged with the ground electrode 413 spaced apart from the lower/other side. . At this time, the separation space forms a discharge region 414 in which OH radicals are generated.

Since the structure of this embodiment is made of a flexible material, the dielectric sheet 411 and the metal electrode 412 may be manufactured in a'c' shape as shown in FIG. 6. Alternatively, the present invention can be manufactured in various shapes such as'd','b' or'S' in addition to'c' by applying the dielectric sheet 411 and the metal electrode 412 of a flexible material.

Although the present invention has been described above by way of limited examples and drawings, the present invention is not limited by this, and various modifications and variations can be made by those skilled in the art to which the present invention pertains.

Those of ordinary skill in the art related to this embodiment will understand that it may be implemented in a modified form without departing from the essential characteristics of the above-described substrate. Therefore, the disclosure methods should be considered from an explanatory point of view rather than a restrictive point of view. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent range should be interpreted as being included in the present invention.

10: case 11: inlet
12: outlet 20: suction
21: suction fan 22: fan motor
30: dust filter unit 31: curve filter
32: Heaper filter 40: Plasma sterilization unit
41, 41': plasma source 42: moisture injector
50: photocatalyst filter 51: photocatalyst
52: UV lamp 60: active species filter
71: power supply unit 72: control unit
80: operation switch 90: sensor unit
411, 411': Dielectric sheet 412. 412': Metal electrode
413, 413': ground electrode 414, 414': discharge area

Claims (6)

A case 10 having an intake port 11 through which external air is sucked, and an exhaust port 12 for discharging purified air;
Case 10, the suction unit 20 for sucking air inward;
A dust filter unit 30 for removing dust contained in the air sucked in by the suction unit 20;
Plasma sterilization unit 40 for primary sterilization of air that has passed through the dust filter unit 30 by generating oxygen-active species; And
A photocatalyst filter 50 for secondary sterilization by applying UV to air passing through the plasma sterilization unit 40; And
A high-efficiency plasma containing UV, and an air sterilization deodorizer using a catalyst, including; an active species filter 60 that absorbs residual active species in the air that has passed through the photocatalyst filter 50.
The method according to claim 1,
A sensor for detecting at least one of fine dust, harmful gas, flame, and smoke, and a control unit 72 for controlling the suction unit 20 and the plasma sterilization and photocatalytic filter 50 according to the sensor's detection signal. Including,
The photocatalyst filter 60
O ³ oxygen decomposition of the active species (O ₃ + UV light emitted → O + O ₂₎ to a high efficiency plasma, UV sterilization and air deodorizer with a catalyst characterized in that to generate a high degree of O-radical oxidation.
The method according to claim 1, Plasma sterilization unit 40
A high-efficiency plasma, UV and air sterilization deodorizer characterized by generating OH radicals among oxygen-active species.
The method according to claim 1 or claim 3, Plasma sterilization unit 40 is
At least one ground electrode 413 (-) connected to the power supply unit 71, a dielectric sheet 411 spaced apart from the ground electrode 413 (-) to form a discharge region in which OH radicals are generated, and electrical Plasma source 41 having a plurality of metal electrodes 412 (+) that are spaced apart from each other in the dielectric sheet 411 and are buried as a plurality of energized particles to generate OH radicals; And
A high-efficiency plasma containing UV, and an air sterilization deodorizer using a catalyst; a moisture injector (42) having a polymer electrolyte membrane to electrolyze air to release moisture into the plasma source (41).
The plasma source (41) according to claim 4,
High-efficiency plasma, UV and air sterilization deodorizer using a flexible material.
The dielectric sheet (411) according to claim 4,
Any one of rubber, silicone, paper, plastic, and fiber materials having a dielectric constant of 3 to 10 and capable of bending and bending,
The metal electrode 412 (+)
A high-efficiency plasma, UV, and air sterilization deodorizer using a catalyst characterized in that it is a copper wire that is divided into multiple and electrically connected to each other.

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