KR200479602Y1

KR200479602Y1 - Plasma generating module forming coating layer and air cleaner including the same

Info

Publication number: KR200479602Y1
Application number: KR2020140006608U
Authority: KR
Inventors: 김병호; 이명환
Original assignee: 씨엔케이파트너스 주식회사
Priority date: 2014-09-05
Filing date: 2014-09-05
Publication date: 2016-02-17

Abstract

The present invention provides a plasma generating module and an air purifier including a first electrode and a second electrode having a surface coated with a graphene coating layer and a case accommodating the first electrode and the second electrode, So that the harmful substances can be effectively purified and the power consumption can be reduced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a plasma generating module having a graphene coating layer and an air purifier including the plasma generating module.

The present invention relates to the field of air purifiers, and more particularly, to an air purifier which is capable of effectively purifying harmful substances such as hydrocarbons by forming a graphene coating layer on the surface of a first electrode and a second electrode, To a plasma generation module and an air purifier in which a coating layer is formed.

Modern people increase the degree of airtightness and airtightness that are further blocked by outside air in terms of high efficiency such as cooling and heating, sound insulation, and energy saving. As time for living in indoor increases, exposure to various pollutants And for these reasons, symptoms are caused by internal air pollution such as headache, eye disease, concentration loss, dizziness, nausea, and the like. In addition, the emergence of new building materials for energy conservation tends to increase the emission of pollutants, namely formaldehyde and odors.

Therefore, since the polluted indoor air is harmful to the human body together with the polluted atmosphere, the use of the air purifier that can safely remove the pollutants in the air, There is a trend.

As a method of purifying the air purifier, a filter method has been used in which polluted air is passed through a filter to filter polluted matter, as in Korean Patent No. 10-0778669.

However, the conventional filter method has a merit that the initial investment cost is cheap by collecting the dust by colliding dust with the fibrous filter. However, since the filter must be replaced at any time, the expenditure of the maintenance cost becomes excessive, When the time is missed, the bacteria contained in the filter are propagated and discharged.

Accordingly, recently, there has been used a method of removing harmful germs and bacteria in the air by sterilization and fine dust removal by the plasma, but the generation efficiency of the plasma is unsatisfactory.

Korean Patent No. 10-0778669

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems of the prior art, and it has been proposed to increase the surface area by coating the surfaces of the first electrode and the second electrode constituting the plasma generation module with graphene, A plasma generating module capable of generating hydroxyl radicals to effectively purify harmful substances such as hydrocarbons and reducing power consumption, and an air purifier including the plasma generating module.

In order to solve the above-described problems, the present invention provides a plasma module in which a graphene coating layer is formed. The plasma module includes a first electrode and a second electrode, . &Lt; / RTI >

In the plasma generating module in which the graphene coating layer of the present invention is formed, the outer circumferential surface of the first electrode has a sawtooth shape, and the second electrode can face the outer circumferential surface of the first electrode.

In the plasma generating module in which the graphene coating layer of the present invention is formed, the inner circumferential surface of the first electrode has a sawtooth shape, and the second electrode can face the inner circumferential surface of the first electrode.

In the plasma generating module in which the graphene coating layer of the present invention is formed, it is preferable that the first electrode has a circular band structure and the outer circumferential surface and the inner circumferential surface have a sawtooth shape, and that the second electrode faces each of the outer circumferential surface and the inner circumferential surface of the first electrode Do.

In the plasma generating module in which the inventive graphene coating layer is formed, the first electrode is preferably made of stainless steel.

According to another aspect of the present invention, there is provided an air purifier including: a suction fan for sucking air; A pre-filter for filtering large particles of air introduced through the suction fan; And a plasma generation module for generating plasma by an applied power source to decompose and purify the air filtered by the pre-filter, wherein the plasma generation module includes a first electrode having a graphene coating layer formed on a surface thereof, And a case accommodating the second electrode, the first electrode, and the second electrode.

The air purifier of the present invention may further include a heparin filter for filtering fine particles in the air and an activated carbon filter for filtering the odor particles.

According to the present invention, by coating the surfaces of the first electrode and the second electrode with graphene, a highly efficient plasma is generated to effectively purify harmful substances such as hydrocarbons present in the room or introduced into the room, thereby reducing power consumption I have.

In addition, by arranging the second electrode so as to be opposed to the inner circumferential surface and the outer circumferential surface, respectively, with the first electrode having the sawtooth shape as the center, both of the inner circumferential surface and the outer circumferential surface have an effect of securing a larger plasma reaction area and improving the efficiency of purification.

1 is an exploded perspective view of an air purifier according to the present invention.
2 is an exploded perspective view of a plasma generating module according to the present invention.
3A to 3D illustrate an embodiment of a process of forming a graphene coating layer on a stainless steel surface.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the embodiments described herein and the arrangements shown in the drawings are only exemplary embodiments of the present invention, and that various equivalents and modifications may be made thereto at the time of the present application. The detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention. The following terms are defined in consideration of functions in the present invention, and the meaning of each term should be interpreted based on the contents throughout this specification. The same reference numerals are used for portions having similar functions and functions throughout the drawings.

The present invention relates to a plasma generating module and an air purifier including the plasma generating module. The plasma generating module includes a first electrode and a second electrode. The first electrode and the second electrode are coated with graphene to effectively generate plasma, And to provide a configuration capable of reducing power consumption.

FIG. 1 is an exploded perspective view of an air purifier according to the present invention, and FIG. 2 is an exploded perspective view of a plasma generating module according to the present invention.

Referring to FIGS. 1 and 2, the air purifier according to the present invention may include a suction fan 500, a plasma generation module 200, and a prefilter 100. 1, an activated carbon filter 300 or a HEPA filter 400 may be further included. In addition, various filters may be added to the air purifier according to the use of the air purifier. In addition to the same order of placement, various layouts are possible.

The suction fan 500 sucks contaminated air in the room, and relatively large particles of dust in the air sucked by the suction fan 500 are filtered by the pre-filter 100.

A pre-filter 100, also referred to as a pre-filter, is disposed in front of the air purifier to primarily remove relatively large particles (e.g., dust, fluff, etc.) in the air.

The activated carbon filter 300 filters the odor particles in the air that has passed through the prefilter 100 and the plasma generation module 200 and the HEPA filter 400 filters the fine dust that has passed through the activated carbon filter 300 It is a high performance air purification filter that removes more than 99.97% of fine dust of 0.3μm or more.

The plasma generating module 200 generates a plasma by an applied power source to purify harmful substances such as hydrocarbons flowing into the plasma generating module 200. When the electric energy is converted into the electron energy by the plasma generation module 200, the electrons are activated with energy relatively higher than ions, atoms and molecules, and the electrons are converted into free radicals (hydroxyl radicals, -OH) So that ultrafine dust or the like is oxidized to be reduced. That is, the hydroxyl radicals are generated in moisture or oxygen molecules in the air, and the generated hydroxyl radicals oxidize and stabilize the harmful substances in the polluted gas because they have a stronger oxidation reaction than the oxidative power due to the ordinary molecular reaction.

The plasma generating module 200 includes a first electrode 220 and second electrodes 210 and 230 facing each other and a case 240 housing the first electrode 220 and the second electrodes 210 and 230, And may further include a power applying unit for applying power to the first electrode 220 and the second electrodes 210 and 230, though not shown in the drawing.

At this time, a graphene coating layer is formed on the surfaces of the first electrode 220 and the second electrodes 210 and 230.

Graphene is a hexagonal monolayer structure composed of carbon, and refers to a polycyclic aromatic molecule in which a plurality of carbon atoms are covalently bonded to each other to form a two-dimensional thin film of a carbon hexagonal plane, that is, a honeycomb structure having a two-dimensional structure . The carbon atoms linked by such a covalent bond form a 6-membered ring as a basic repeating unit, but it is also possible to further include a 5-membered ring and / or a 7-membered ring. Thus, graphene appears as a single layer of covalently bonded carbon atoms (usually sp ² bonds). The graphene may have a variety of structures, and such a structure may vary depending on the content of the five-membered ring and / or the seven-membered ring which may be contained in the graphene. The graphene may be composed of a single layer, but it is also possible to form a plurality of layers by stacking the graphenes on each other.

By coating such graphene on the surfaces of the first electrode 220 and the second electrodes 210 and 230, the surface area is increased to improve the plasma generation efficiency, and hydroxyl radicals are generated thereby to remove harmful substances such as hydrocarbons It is possible to effectively purify and reduce power consumption.

The first electrode 220 may have a saw-tooth shape on an outer circumferential surface or an inner circumferential surface thereof, and the second electrodes 210 and 230 may be disposed to face the outer circumferential surface or the inner circumferential surface having the serrated shape. In this case, the plasma generation region is located between the second electrode 210 and the inner peripheral surface or the outer peripheral surface where the sawtooth shape is formed, and air flows into the region.

In particular, when the first electrode 220 has a circular band structure in which the first electrode 220 has a saw-tooth shape on both the outer and inner circumferential surfaces thereof, the second electrodes 210 and 230 are disposed on the outer and inner circumferential surfaces of the first electrode 220, Respectively. In other words, by disposing the second electrodes 210 and 230 so as to face the inner circumferential surface and the outer circumferential surface, respectively, about the first electrode 220 having the saw tooth shape on both the inner and outer circumferential surfaces, The plasma generation region is formed not only in the plasma generation region but also inside the plasma generation region, thereby securing a larger plasma reaction region and improving the purification efficiency.

The material of the first electrode 220 is preferably made of stainless steel and may be formed of various metals depending on the corrosiveness of the polluted gas. At this time, as one form of the various metal materials to be applied, for example, platinum, tungsten, copper, aluminum, activated carbon excellent in specific surface area, special alloy such as Hastelloy, titanium, inconel Or by coating the stainless steel with teflon.

In this way, the plasma generating module 200 having the first electrode 220 and the second electrodes 210 and 230 having the surface coated with the graphene coating layer is mounted on the air purifier to generate the high-efficiency plasma, It is possible to effectively clean harmful substances such as hydrocarbons flowing into the space between the first electrode 220 and the second electrodes 210 and 230 and to reduce power consumption.

3A to 3D illustrate an embodiment of a process of forming a graphene coating layer on a stainless steel surface.

3A and 3D, the surface of the stainless steel was washed with a small amount of acetone and ethanol, and then immersed in a solution (sulfuric acid: hydrogen peroxide = 3: 1) mixed with sulfuric acid and hydrogen peroxide for about 15 seconds, Is activated. Then, it is washed with distilled water and stored in a laboratory container (FIG. 3A).

Then, when stainless steel is immersed in a 10 mM APTES (3-aminopropyltriethoxysilane) solution of an ethanol solvent, the APTES is bonded to the hydroxyl surface of the steel by silanization reaction (FIG. 3B). The APTES solution used is 10 ml, which is maintained at a constant temperature of 25 ° C for approximately 2 hours.

A solution of 0.1 mg / ml of RGO (Reduced Graphine Oxide) is reacted on the APTES-immobilized surface. The pH of the RGO aqueous solution is 9.6. At this time, the amine group at the terminal of the APTES exhibits a positive charge and the hydroxyl group of RGO exhibits a negative charge, so that it can be effectively bound by the electrostatic force between the charges (FIG. This process is also maintained at a constant temperature of 5 ° C for about 2 hours.

After the reaction with RGO is completed, it is washed with distilled water and kept sealed (FIG. 3D).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Those skilled in the art will appreciate that many modifications and variations are possible in light of the above teachings. And all such modifications and variations are intended to be included within the scope of the present invention.

100: Pretreatment filter
200: Plasma generating module
210, and 230: a second electrode
220: first electrode
240: Case
300: activated carbon filter
400: Hepa filter
500: Suction fan

Claims

A first electrode and a second electrode facing each other and having a graphene coating layer formed on a surface thereof,
Wherein the first electrode has a ring-shaped band structure and the outer peripheral surface and the inner peripheral surface are saw-
The second electrode is opposed to the outer circumferential surface and the inner circumferential surface of the first electrode,
And a case for accommodating the first electrode and the second electrode.

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The method according to claim 1,
Wherein the first electrode comprises:
Wherein the graphene coating layer is formed of stainless steel.

A suction fan for sucking air;
A pre-filter for filtering large particles of air introduced through the suction fan;
And a plasma generation module for generating plasma by an applied power source to decompose and purify the air filtered by the pre-filter,
The plasma generation module includes:
A first electrode and a second electrode facing each other and having a graphene coating layer formed on a surface thereof,
Wherein the first electrode has a ring-shaped band structure and the outer peripheral surface and the inner peripheral surface are saw-
The second electrode is opposed to the outer circumferential surface and the inner circumferential surface of the first electrode,
And a case accommodating the first electrode and the second electrode.

The method of claim 6,
Further comprising a HEPA filter for filtering the fine particles in the air and an activated carbon filter for filtering the odor particles.

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