KR102396524B1 - Photocatalyst filter manufacturing by 3d printer and air conditioner including photocatalytic filter - Google Patents

Abstract

The present invention provides a photocatalyst filter manufactured by a 3D printer and an air purifying device including the photocatalyst filter. The photocatalytic filter manufactured by a 3D printer comprises a photocatalyst filter manufactured by printing a printing raw material coated with a titanium dioxide photocatalyst composition using a 3D printer. The photocatalyst filter defines a plurality of outer cells having an inlet opened along at least one of the outer surfaces in the direction of air flow by an outer partition wall and provides at least one or more through-holes therein having an outlet opened in the direction of air flow and spaced apart from each other at predetermined intervals. Accordingly, productivity can be improved.

Description

A photocatalytic filter manufactured by a 3D printer and an air purifier comprising a photocatalytic filter {PHOTOCATALYST FILTER MANUFACTURING BY 3D PRINTER AND AIR CONDITIONER INCLUDING PHOTOCATALYTIC FILTER}

The present invention relates to a photocatalyst filter manufactured by a 3D printer and an air purification device including a photocatalyst filter. More specifically, a photocatalytic filter coated with a titanium dioxide photocatalyst composition manufactured using a 3D printer is used to increase light efficiency. A photocatalyst filter and photocatalyst manufactured by a 3D printer that can prevent the flow path of air from being blocked by the irradiation path of ultraviolet rays by having a plurality of through-holes in the photocatalytic filter that can smooth the flow path of air It relates to an air purifier including a filter.

In general, various air purifiers are used in homes or industrial sites. For example, in a waste incinerator or a factory chimney, an air purifier is used to remove harmful substances or dust contained in exhaust gas. In order to maintain a clean environment at home, an air purifying device is used, and various filters for purifying air are installed in air conditioners, fan heaters, vacuum cleaners, and the like.

Conventionally, in order to purify air, a non-woven fabric filter using polypropylene (PP) resin fiber or polyethylene (PE) resin fiber is generally used, or an electrostatic filter of an electrostatic precipitation method is used.

However, although it is possible to filter dust with this type of filter, it is difficult to remove odors or sterilize bacteria due to its structure. Therefore, a separate deodorizing filter made of activated carbon was used for deodorization. However, the deodorization filter using activated carbon had a problem that the deodorization performance and durability were not good, and it was not possible to sterilize harmful microorganisms contained in the air. In order to solve this problem, a so-called photocatalyst technology using a photocatalyst material that is activated by light energy and has sterilization and deodorization functions has been researched and developed, and a representative photocatalyst is titanium oxide (TiO2).

Photocatalysts such as titanium oxide have excellent adsorption ability with organic matter, and when exposed to light energy, they are excited to form various types of radicals to sterilize microorganisms by strong oxidizing power, and at the same time, radicals remove odors. This is because it decomposes while reacting with the odorous substances that cause it.

And, 3D printer is a device that manufactures a 3D object by spraying a continuous layer of material based on a 3D design created by a specific software. It is widely used in all fields of industry, such as architecture, medical care, and food, and its use is also expanding for the purpose of customizing products with their own style and design. Depending on the type of raw material used, it may be classified into a Fused Filament Fabrication (FFF), a Fused Deposition Modeling (FDM) method, a Digital Light Processing (DLP) method, and a Selective Laser Sintering (SLS) method. Here, in the FFF and FDM methods, a solid filament may be used as a raw material, in the DLP method, a liquid raw material may be used, and in the SLS method, a raw material in a powder form may be used.

Republic of Korea Patent Publication No. 10-2020-0013284

SUMMARY OF THE INVENTION An object of the present invention is to provide a photocatalytic filter manufactured by a 3D printer and an air purification device including the photocatalyst filter.

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.

A photocatalytic filter manufactured by a 3D printer according to an embodiment of the present invention for solving the above-mentioned problems is a photocatalytic filter manufactured by printing a printing raw material coated with a titanium dioxide photocatalyst composition using a 3D printer; and , The photocatalytic filter has a plurality of outer cells having an inlet opened according to the flow direction of air on at least one of the outer surfaces by an outer partition wall, and an outlet is opened according to the flow direction of the air therein. At least one through-hole spaced apart from each other may be provided.

In one embodiment of the present invention, the inner surface of the through hole, a plurality of inner cells having outlets opened according to the flow direction of the air may be defined by the inner partition wall.

In one embodiment of the present invention, the upper surface of the photocatalytic filter may be formed in a semi-spherical shape that is inclined downwardly from both ends to the center direction.

In one embodiment of the present invention, the printing raw material may include a porous inorganic material.

In addition, the air purifier according to an embodiment of the present invention for solving the above problems may include a photocatalytic filter manufactured by a 3D printer.

Other specific details of the invention are included in the detailed description and drawings.

According to the present invention, by manufacturing the photocatalytic filter by a 3D printer, it is possible to easily print a complex shape to simplify workability and improve productivity.

According to the present invention, by manufacturing a photocatalyst filter coated with a titanium dioxide photocatalyst composition using a 3D printer, it is possible to effectively remove viruses or bacteria through the photocatalyst, thereby improving air purification efficiency.

According to the present invention, it is possible to prevent the flow path of air from being blocked by the irradiation path of ultraviolet rays by providing a plurality of through-holes capable of smoothing the flow path of air in the photocatalytic filter manufactured by the 3D printer. .

According to the present invention, by providing the upper surface of the photocatalytic filter manufactured by the 3D printer in a semi-spherical shape, it is possible to increase the light efficiency while smoothing the irradiation path of ultraviolet rays and the flow path of air.

According to the present invention, ultraviolet rays are prevented from being irradiated to the outside, thereby minimizing harmful effects caused by ultraviolet rays.

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

1 is a view for explaining an air purification device including a photocatalytic filter manufactured by a 3D printer according to an embodiment of the present invention.
2 is a view for explaining a photocatalytic filter manufactured by a 3D printer according to an embodiment of the present invention.
3 is a view for explaining a photocatalytic filter manufactured by a 3D printer according to another embodiment of the present invention.
4 is a view for explaining an operating state of an air purifier including a photocatalytic filter manufactured by a 3D printer according to an embodiment of the present invention.
5 is a view for explaining an operating state of an air purifier including a photocatalytic filter manufactured by a 3D printer according to another embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and those of ordinary skill in the art to which the present invention pertains. It is provided to fully understand the scope of the present invention to those skilled in the art, and the present invention is only defined by the scope of the claims.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless otherwise specified in the phrase. As used herein, “comprises” and/or “comprising” does not exclude the presence or addition of one or more other components in addition to the stated components. Like reference numerals refer to like elements throughout, and "and/or" includes each and every combination of one or more of the recited elements. Although "first", "second", etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from another. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein will have the meaning commonly understood by those of ordinary skill in the art to which this invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless specifically defined explicitly.

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

1 is a view for explaining an air purification device including a photocatalytic filter manufactured by a 3D printer according to an embodiment of the present invention.

As shown in FIG. 1 , the air purifier 1 including a photocatalytic filter manufactured by a 3D printer according to an embodiment of the present invention is manufactured by a fan module 100 , a light source unit 200 and a 3D printer. It may include a photocatalytic filter 300 that becomes

The fan module 100 may include a fan 120 and a motor 140 that introduces air into the air purifier 1 and discharges the purified air.

Here, the motor 140 may include a separate battery unit, but is not limited thereto.

The light source unit 200 may include a plurality of photocatalyst UV LEDs 220 irradiating ultraviolet light to the photocatalytic filter 300 manufactured by the 3D printer.

The plurality of photocatalyst UV LEDs 220 may irradiate ultraviolet rays according to the absorption wavelength of the photocatalyst substituted with cations or anions. However, the present invention is not limited thereto, and the plurality of photocatalyst UV LEDs 220 may irradiate visible light.

For example, the wavelength of the ultraviolet rays of the plurality of photocatalytic UV LEDs 220 includes a band of 200 to 390 nm, and in particular, if the peak wavelength is between 260 and 370 nm, the photocatalytic reaction efficiency can be further increased.

According to an embodiment, the light source unit 200 may further include a UV LED for sterilization (not shown) that irradiates ultraviolet rays having a wavelength for sterilization in the same direction as the ultraviolet irradiation direction of the plurality of photocatalyst UV LEDs 220 . .

The light source unit 200 having such a structure places UV LEDs 220 for photocatalysis in front of the photocatalytic filter 300 manufactured by the 3D printer, so that ultraviolet rays shine from the front of the photocatalytic filter 300 manufactured by the 3D printer. The photocatalytic filter 300 manufactured by the 3D printer by allowing the photocatalytic reaction to occur from the front surface of the photocatalytic filter 300 manufactured by the 3D printer before the pressure drop of the air passing through the photocatalytic filter 300 occurs ) can further improve the decomposition efficiency of harmful gases.

The photocatalytic filter 300 may be manufactured by a 3D printer so as to be spaced apart from each other at a predetermined interval on a surface corresponding to the light source unit 200 .

Specifically, the photocatalytic filter 300 may be formed by printing using a printing raw material coated with a titanium dioxide (TIO ₂ ) photocatalyst composition by a 3D printer.

For example, when the photocatalytic filter 300 is generated using the FDM (Fused Deposition Modeling) method of forming a three-dimensional output while melting a thermoplastic material and sequentially stacking the melt from the bottom, the photocatalytic filter 300 is It can be produced using titanium dioxide photocatalyst powder, methyl cellulose, a dispersing agent, a porous inorganic material such as an antifoaming agent.

In addition, when the photocatalytic filter 300 is generated using the SLA (Stereolithography) method of producing a three-dimensional output by projecting a laser onto a water tank containing a liquid photocurable material and solidifying the part that the laser touches, it is manufactured by a 3D printer The photocatalyst filter 300 to be used may be generated by partially curing the photocatalyst using a laser irradiating UV using a photocurable resin and titanium dioxide photocatalyst powder.

Alternatively, the photocatalytic filter 300 manufactured by the 3D printer may be generated using a Selective Laser Sintering (SLS) method and a Fused Filament Fabrication (FFF) method.

In the present embodiment, the photocatalytic filter 300 is disclosed as being produced using 3D printing technology, but is not limited thereto.

Referring to FIG. 2 , the photocatalytic filter 300 manufactured by the 3D printer has a rectangular shape having six sides, and a plurality of outer cells 322 and a plurality of outer cells 322 whose inlets are opened according to the air flow direction. ) including at least one outer surface 320 including an outer bulkhead 324, and at least one through hole 342 with an outlet opening according to the flow direction of air and spaced apart from each other by a predetermined interval It may include an upper surface 340 that is.

The outer cell 322 and the outer partition wall 324 of the outer surface 320 may be formed in a mesh network structure, but is not limited thereto, and may be formed in a honeycomb structure.

The outer cell 322 may be opened according to the flow direction of the air to expose the inside of the photocatalytic filter 300 manufactured by the 3D printer.

According to an embodiment, the outer cell 322 may expose the inner surface of the through hole 342 .

The through hole 342 may include a plurality of inner cells 3420 having outlets opened according to the flow direction of the air on the inner surface thereof, and an inner partition wall 3422 defining the plurality of inner cells 3420 . .

The upper surface 340 may be formed as a flat surface, but is not limited thereto.

For example, as shown in FIG. 3 , the upper surface 340 may be formed as a semi-spherical surface.

Specifically, the upper surface 340 may be formed in a semi-spherical shape inclined downwardly from both ends 344 to the central portion 346 . That is, the height of both ends 344 may be higher than the height of the center 346 .

By producing such a photocatalytic filter 300 using a three-dimensional printing technology, it is possible to easily print a complex shape, thereby simplifying workability and improving productivity.

According to an embodiment, the photocatalytic filter 300 manufactured by the 3D printer may have a cylindrical cartridge shape and may be detachable for washing.

The air purifier 1 having such a structure includes a photocatalytic filter 300 using titanium oxide, thereby effectively removing viruses or bacteria to improve air purification efficiency, and a photocatalytic filter 300 manufactured by a 3D printer. ), by providing a plurality of through-holes capable of smoothing the flow path of air, it is possible to prevent the flow path of air from being blocked by the irradiation path of ultraviolet rays.

In addition, since the air purifier 1 has the upper surface 340 of the photocatalytic filter 300 in a semi-spherical shape, it is possible to increase the light efficiency while smoothing the irradiation path of ultraviolet rays and the flow path of air.

According to an embodiment, when an ultraviolet reflecting plate (not shown) is installed between the light source unit 200 and the photocatalytic filter 300 manufactured by the 3D printer in the air purifier 1, the ultraviolet rays irradiated to the inner surface are irradiated to the 3D printer again. It is possible to be irradiated toward the photocatalytic filter 300 produced by the , it is possible to further increase the deodorization and sterilization efficiency.

The operation of the air purifier including the photocatalytic filter manufactured by the 3D printer according to the present embodiment having such a structure is as follows. 4 is a view for explaining an operating state of an air purifier including a photocatalytic filter manufactured by a 3D printer according to an embodiment of the present invention, and FIG. It is a view for explaining the operating state of the air purifier including the photocatalytic filter to be manufactured.

First, as shown in FIG. 4 , the operation of the air purifier 1 including the photocatalytic filter manufactured by the 3D printer is performed when air is introduced through the outer surface of the air purifier 1 to the 3D printer. The outer cell 322 and inner cell 3420 of the photocatalytic filter 300 manufactured by The purified air can be discharged through the fan 120 of the fan module 100 by effectively removing viruses or bacteria through the photocatalytic filter 300 manufactured by the 3D printer.

Here, it is possible to further increase the photocatalytic reaction efficiency or adsorption efficiency of the photocatalytic filter 300 manufactured by the 3D printer by the irradiated ultraviolet rays. At this time, the outer surface of the air purifier 1 is provided with a plurality of through-holes, air can be introduced.

And, as shown in FIG. 5 , in the operation of the air purifier 1 including the photocatalytic filter manufactured by the 3D printer, the upper surface of the photocatalytic filter 300 manufactured by the 3D printer is formed in a semi-spherical shape. By efficiently irradiating the irradiation path of ultraviolet rays irradiated from the plurality of photocatalyst UV LEDs 220 and the upper surface of the photocatalytic filter 300 manufactured by the 3D printer, the light efficiency can be increased while smoothing the air flow path. .

As mentioned above, although embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains know that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

1: Air purifier
100: fan module
200: light source unit
300: photocatalytic filter manufactured by 3D printer

Claims (5)

A photocatalyst filter manufactured in a square shape having six sides by printing a printing raw material coated with a titanium dioxide photocatalyst composition using a 3D printer;
The photocatalytic filter is
a plurality of outer cells having an inlet opened according to the flow direction of the air and spaced apart from each other by a predetermined interval and disposed on at least one of the outer surfaces; and
At least one through-hole having an outlet opening according to the flow direction of the air and being spaced apart from each other by a predetermined distance and disposed on the upper surface;
The through hole is
The outlet is opened according to the flow direction of the air, and it includes a plurality of inner cells spaced apart from each other and disposed on the inner surface,
The plurality of outer cells,
Each is defined by a flat plate-shaped outer bulkhead,
The plurality of inner cells,
Each is defined by an inner bulkhead in the shape of a curved semicircle,
The size of the outer cell and the inner cell is smaller than the size of the through hole,
After the air moves through the opening of the outer cell, after moving through the outlet of the inner cell, the photocatalytic filter manufactured by a 3D printer sequentially passes through the photocatalytic filter through the outlet of the through hole. delete According to claim 1,
The upper surface of the photocatalytic filter,
A photocatalytic filter manufactured by a 3D printer, which is formed in a semi-spherical shape that curves downwardly from both ends toward the center. According to claim 1,
The printing raw material includes a porous inorganic material, a photocatalytic filter manufactured by a 3D printer. [Claim 5] An air purifying device comprising a photocatalytic filter manufactured by the 3D printer according to any one of claims 1 to 4.

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