WO2024117502A1

WO2024117502A1 - Photocatalyst module having multi-wavelength ultraviolet rays applied thereto and air purifier using same

Info

Publication number: WO2024117502A1
Application number: PCT/KR2023/014916
Authority: WO
Inventors: 강용훈; 정원영
Original assignee: 유버 주식회사
Priority date: 2022-11-30
Filing date: 2023-09-26
Publication date: 2024-06-06

Abstract

The present invention relates to a device that decomposes and purifies harmful gases in a gas by irradiating, by using a UV-LED, ultraviolet rays with different peak wavelengths to a photocatalyst. The device comprises: a plurality of photocatalyst filters which have outer portions with a predetermined width and a predetermined height and are spaced apart from each other along the longitudinal direction; a plurality of light sources comprising a first light source including an ultraviolet LED having a first peak wavelength and a second light source including an ultraviolet LED having a second peak wavelength different from the first peak wavelength; and a housing accommodating the photocatalyst filters and the light sources. Between two photocatalyst filters adjacent to each other in the longitudinal direction, a plurality of light sources are spaced apart from each other along the width direction. Two light sources adjacent to each other in the width direction have different peak wavelengths.

Description

Photocatalyst module applied with multi-wavelength ultraviolet rays and air purifier using the same

This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0165175, dated November 30, 2022, and Korean Patent Application No. 10-2022-0177499, dated December 16, 2022. All content disclosed in the literature is incorporated as part of this specification.

The present invention relates to a device that decomposes and purifies harmful gases in gases by irradiating ultraviolet rays with different peak wavelengths to a photocatalyst using a UV-LED (ultra-violet light emitting diode).

Air purifiers that utilize the phenomenon in which harmful gases in contact with the photocatalyst are decomposed and purified when ultraviolet rays are irradiated to the photocatalyst are becoming popular.

These air purifiers mainly use ultraviolet LEDs (UV-LEDs) as a light source and are structured to irradiate the ultraviolet rays to a filter containing or coated with a photocatalyst material.

Light generated from an LED has the characteristic of focusing the light intensity at the peak wavelength. Accordingly, the conventional air purifier using an ultraviolet LED was manufactured using an ultraviolet LED with a peak wavelength that has high luminous efficiency compared to power consumption.

For example, when manufacturing an air purifier applied in a general home environment, if the LED with a 365nm peak wavelength emits more light among LEDs with a 340nm peak wavelength and LEDs with a 365nm peak wavelength that consume the same power, power consumption efficiency must be taken into consideration. It was common to use LEDs with a peak wavelength of 365 nm.

In an environment where a lot of specific harmful gases are generated, there may be a wavelength that is more effective in breaking specific bonds of the harmful gas. However, the above-mentioned conventional ultraviolet photocatalytic purifier does not reflect this principle at all. In other words, it cannot be concluded that the purification efficiency is good simply by using an ultraviolet LED with a peak wavelength with high luminous efficiency.

Additionally, since conventional ultraviolet photocatalytic purifiers are used together with other filters, it has been difficult to increase the purification capacity.

The present invention was devised to solve the above-mentioned problems, and seeks to provide an air purifier that can further increase air purification efficiency by including an ultraviolet LED with a peak wavelength suitable for the environment in which the air purifier is installed.

The present invention seeks to provide an air purifier that can efficiently perform a purification function even in different environments by applying ultraviolet LEDs of various peak wavelengths.

The present invention seeks to provide an air purifier whose purification capacity can be easily increased.

The present invention for solving the above-described problem includes: a plurality of photocatalyst filters having an outer perimeter of a predetermined width and a predetermined height and spaced apart along the longitudinal direction; A plurality of light sources including a first light source including an ultraviolet LED having a first peak wavelength and a second light source including an ultraviolet LED having a second peak wavelength different from the first peak wavelength; and a housing for accommodating the photocatalyst filter and the light source.

The light source may include a third light source including an ultraviolet LED having a third peak wavelength different from the first and second peak wavelengths.

The light source may include an N-th light source including an ultraviolet LED having an N-th peak wavelength different from the 1st to N-1th peak wavelengths. The N may be a natural number of 4 or more.

Between two photocatalyst filters adjacent in the longitudinal direction, a plurality of light sources are spaced apart along the width direction.

The peak wavelengths of two light sources neighboring in the width direction are different.

Among the light sources adjacent in the longitudinal direction with one photocatalyst filter in between, the peak wavelengths of the two light sources provided in front and behind the photocatalyst filter, but arranged closest in the width direction, are different from each other.

At least some of the plurality of light sources may be a first type of light source extending from one end toward the other end in the vertical direction.

Some of the other light sources among the plurality of light sources may be a second type of light source extending from the other end toward one end in the vertical direction.

One of the two light sources adjacent in the width direction may be a first type light source and the other may be a second type light source.

Among the light sources adjacent in the longitudinal direction with one photocatalyst filter in between, one of the two light sources provided in front and behind the photocatalyst filter, respectively, and arranged closest in the width direction, is a first type light source. The other may be a second type of light source.

The light source includes: a base substrate provided at one end in the vertical direction; An ultraviolet LED mounted on the base substrate; A condensing lens provided on the ultraviolet LED; and a light guide lens whose incident surface faces the output surface of the condenser lens and extends in the vertical direction.

The light source includes: an extension substrate extending in a vertical direction from one end to the other end; Ultraviolet LEDs mounted spaced apart in the vertical direction on the extension board; And it may be a light source of a second structure including a lens provided on the ultraviolet LED.

The extension board may be connected to a base board provided at one end in the vertical direction.

The light source includes: an inclined substrate extending obliquely from one end in a vertical direction; Ultraviolet LEDs mounted spaced apart in the width direction on the inclined substrate; And it may be a light source of a third structure including a lens provided on the ultraviolet LED.

The inclined substrate may be connected to a base substrate provided at one end in the vertical direction.

The plurality of light sources may include at least one of a light source of the first structure, a light source of the second structure, and a light source of the third structure.

The first peak wavelength to the Nth peak wavelength may be selected from 300 nm to 450 nm, respectively.

The plurality of photocatalyst filters may be connected to each other by a corner frame extending in the longitudinal direction to connect the corner portion of the width direction end and the height direction end of each photocatalyst filter to form a photocatalyst filter module.

The plurality of photocatalyst filters may be connected to each other by a middle frame extending in the longitudinal direction to connect the central portion of the height direction end of each photocatalyst filter.

The photocatalyst filter may have a rectangular plate shape with a plurality of porous portions penetrating in the longitudinal direction.

The photocatalyst filter may have a structure in which a photocatalyst material is coated on a mesh-shaped base.

The photocatalyst filter may have a structure in which a photocatalyst material is sintered.

The housing includes: an intake surface plate spaced apart in front of the photocatalyst filter and provided with an intake port for sucking air in the longitudinal direction; an exhaust face plate spaced apart from the rear of the photocatalyst filter and provided with an exhaust port for discharging air in the longitudinal direction; and a side plate spaced apart from the side of the photocatalyst filter.

An intake fan may be installed in the intake port.

An intake filter may be provided in front of the photocatalyst filter to block foreign substances from entering the housing.

The intake filter may be provided in front of the intake fan.

The housing includes a ceiling plate extending longitudinally to connect the upper end of the intake face plate and the upper end of the exhaust face plate and blocking the upper portion of the photocatalytic filter; and a base plate that extends in the longitudinal direction to connect the lower end of the intake face plate and the lower end of the exhaust face plate and blocks the lower portion of the photocatalytic filter.

Side surfaces of the plurality of photocatalyst filters may be supported by side supports disposed between the photocatalyst filter and the side plate.

The side support may include a side blocking plate that extends in the front-back direction to block the sides of the space between two photocatalyst filters arranged adjacent to each other in the longitudinal direction.

The side support may further include a front blocking plate extending laterally from the front end of the side blocking plate and connected to the side plate.

The front blocking plate may block the space between the side blocking plate and the side plate from the space in front of the photocatalyst filter disposed at the front.

A side additional plate may be interposed between the side blocking plate and the photocatalyst filter.

The side additional plate may be a reflector plate or a photocatalyst filter plate.

The side support may further include a side additional plate holder that supports the side additional plate.

According to the present invention, air purification efficiency can be further increased by including ultraviolet LEDs of different peak wavelengths suitable for the environment in which the air purifier is installed.

The present invention can efficiently perform a purification function even in different environments by applying ultraviolet LEDs of various peak wavelengths.

According to the present invention, purification efficiency can be further increased by ensuring that ultraviolet rays of various peak wavelengths are evenly distributed in the width and length directions.

According to the present invention, by arranging various types of light sources, ultraviolet rays of various peak wavelengths are evenly distributed in the width and length directions, and purification efficiency can be further increased by inducing turbulence in the air.

According to the present invention, by arranging light sources of various structures, ultraviolet rays of various peak wavelengths are evenly distributed in the width and length directions, and purification efficiency can be further increased by inducing turbulence in the air.

In the present invention, the purification capacity can be increased simply by adding more photocatalyst filters in the longitudinal direction of the photocatalyst filter module and adding a light source correspondingly.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

Figures 1 and 2 are a perspective view and an exploded perspective view of a photocatalyst filter module of an embodiment, respectively.

Figures 3 and 4 are an exploded perspective view and a perspective view of a housing containing a photocatalyst filter module of an embodiment, respectively.

Figure 5 is a plan view of the housing of the air purifier of the embodiment with the ceiling plate removed.

6 to 9 are an exploded perspective view, a partially exploded perspective view, a perspective view, and a cross-sectional view of a light source according to the first embodiment of the light source module of the embodiment, respectively.

10 and 11 are a perspective view and a cross-sectional perspective view of a light source according to a second embodiment of the light source module of the embodiment, respectively.

12 and 13 are a perspective view and a cross-sectional view of a light source according to a third embodiment of the light source module of the embodiment, respectively.

Figure 14 is a side view of a light source module and a photocatalyst filter module in which the light source is installed in the first form.

15 to 17 are side views of embodiments in which a light source module including light sources installed in a first type and a second type is coupled to a photocatalytic filter module.

Figure 18 is a plan view of Figure 14.

Figure 19 is a perspective view showing the light source module of Figure 15.

FIG. 20 is a cross-sectional perspective view showing a portion of the upper part of the light source module and the photocatalyst filter module of FIG. 15 cut away.

Figure 21 is a plan view of Figure 20.

Figure 22 is a graph showing the concentration of gas remaining after decomposition by a photocatalytic filter irradiated with ultraviolet rays having different peak wavelengths.

[Explanation of symbols]

10: Photocatalyst filter module 11: Photocatalyst filter 12: Connection frame 123: Corner frame 125: Middle frame 20: Side support 21: Side blocking plate 22: Front blocking plate 23: Side additional plate holder 25: Side additional plate (reflector, filter plate) 30: housing 31: base plate 32: side plate 33: ceiling plate 34: intake face plate 341: intake port 342: intake fan 343: intake filter 35: exhaust face plate 351: exhaust port 352: exhaust fan 40: light source module 41: base substrate 42: Light source 42-N: N light source 421: Ultraviolet LED 422: Condenser lens 423: Light guide lens 425: Extension board 426: Inclined board 427: Lens

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

The present invention is not limited to the embodiments disclosed below, but may be subject to various changes and may be implemented in various different forms. This example is provided solely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. Therefore, the present invention is not limited to the embodiments disclosed below, but substitutes or adds to the configuration of one embodiment and the configuration of another embodiment, as well as all changes and equivalents included in the technical spirit and scope of the present invention. It should be understood to include substitutes.

The attached drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the attached drawings, and all changes, equivalents, and changes included in the spirit and technical scope of the present invention are not limited. It should be understood to include water or substitutes. In the drawings, components may be expressed exaggeratedly large or small in size or thickness for convenience of understanding, etc., but the scope of protection of the present invention should not be construed as limited due to this.

The terms used in this specification are only used to describe specific implementations or examples, and are not intended to limit the invention. And singular expressions include plural expressions, unless the context clearly dictates otherwise. In the specification, terms such as ~include, ~consist of, etc. are intended to designate the presence of features, numbers, steps, operations, components, parts, or a combination thereof described in the specification. In other words, terms such as ~include, ~consist, etc. in the specification. It should be understood that this does not exclude in advance the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

When a component is referred to as being "on top" or "below" another component, it should be understood that not only is it placed directly on top of the other component, but there may also be other components in between. .

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

In explaining the embodiment, for convenience, the direction in which the air flows is defined as the longitudinal direction. The longitudinal direction may correspond to the front-to-back direction. Forward may refer to the direction toward the upstream of the air flow, and rear may refer to the direction toward the downstream of the air flow.

Lateral refers to a direction that intersects the longitudinal direction, and vertical or height direction refers to a direction that intersects both the longitudinal direction and the lateral direction. The up and down direction does not necessarily correspond to the direction of gravity. For example, of course, the side may correspond to the direction of gravity, and the longitudinal direction may correspond to the direction of gravity. That is, the installation posture of the air purifier and the direction specified in the embodiment must be understood separately.

Referring to Figures 1 and 2, the photocatalyst filter 11 of the embodiment may be provided as a photocatalyst filter module 10 in which a plurality of photocatalyst filters 11 are spaced apart along the longitudinal direction. The photocatalyst filter 11 may have a rectangular plate shape with a predetermined width and a predetermined height. The width and height of the photocatalyst filter 11 may be several centimeters to tens of centimeters.

The photocatalyst filter 11 may have a structure in which a photocatalyst material is coated on a mesh-shaped base.

The photocatalyst filter 11 may have a structure in which a photocatalyst material is sintered without a base.

The photocatalyst filter 11 may be made of a porous material that allows air to pass through in the longitudinal direction or the front-to-back direction. The thickness of the photocatalyst filter 11 may be as thin as 1 mm or less, and may have fine holes of 1 mm or less.

In one embodiment, the width and height of the photocatalytic filter 11 may be 15 cm and 15 cm.

For example, five photocatalyst filters 11 may be prepared.

Each of the plurality of photocatalytic filters 11 may be arranged substantially perpendicular to the longitudinal direction or the front-to-back direction and may be spaced apart from the front-to-back direction. The distance between two photocatalyst filters 11 neighboring in the front-back direction may be, for example, 5 to 10 cm.

The size and number of photocatalyst filters 11 can be changed as needed.

The plurality of photocatalyst filters 11 may be connected to each other by a connection frame 12 extending in the longitudinal direction to connect each photocatalyst filter in the front and rear directions to form a photocatalyst filter module 10.

The connection frame 12 may include a corner frame 123 extending in the longitudinal direction to connect the corner portions of the width direction end and the height direction end of each photocatalyst filter.

The connection frame 12 may include a middle frame 125 extending in the longitudinal direction to connect the central portion of the height direction end of each photocatalyst filter.

The corner frame 123 and the middle frame 125 are manufactured to be as thin as possible to maintain rigidity, thereby reducing the space occupied by the photocatalyst filter module 10 and preventing them from affecting the flow of air for the photocatalytic reaction. You can.

The photocatalyst filter 11 may have a rectangular plate shape with a plurality of porous portions penetrating in the longitudinal direction. In the embodiment shown in the drawing, only a portion of the porous portion penetrating in the longitudinal direction is shown for convenience, but it will be understood that the porous portion is provided over the entire area.

The photocatalytic filter module 10 may have an overall or substantially rectangular parallelepiped outline.

Referring to FIGS. 3 to 5 , the photocatalyst filter module 10 and the light source module 40, which will be described later, can be accommodated inside the housing 30.

The housing 30 may also have a rectangular parallelepiped shape to correspond to the shape of the photocatalyst filter module 10.

The housing 30 is spaced apart from the front of the photocatalyst filter 11 and has an intake surface plate 34 provided with an intake port 341 for sucking air in the longitudinal direction, and is spaced from the rear of the photocatalyst filter 11. An exhaust face plate 35 disposed and provided with an exhaust port 351 for discharging air in the longitudinal direction, a pair of side plates 32 spaced apart from each other on both sides of the photocatalytic filter 11, and the intake face plate ( 34) and a ceiling plate 33 extending longitudinally to connect the upper end of the exhaust face plate 35 and blocking the upper part of the photocatalyst filter 11, and the lower end of the intake face plate 34 and the exhaust face plate. It may include a base plate 31 that extends in the longitudinal direction to connect the lower end of (35) and blocks the lower part of the photocatalytic filter 11.

The front and back sides of the photocatalyst filter module 10 may face the intake face plate 34 and the exhaust face plate 35 in the front and rear directions, respectively. An intake fan 342 may be installed in the intake port 341, and an exhaust fan 352 may be installed in the exhaust port 351. The front of the photocatalyst filter module 10 and the intake surface plate 34 may be arranged at a predetermined interval, for example, about 5 cm.

The size of the intake port 341 and the exhaust port 351 may be, for example, several centimeters to several tens of centimeters in diameter.

In the air purifier of the embodiment, air flows into the housing from the front through the intake port 341 of the housing 30, air flows rearward through the space where the photocatalytic filter module 10 is installed, and the exhaust port ( Air can be discharged from the inside to the rear through 351).

The air may be air in the atmosphere of general living areas, air in a special environment such as a factory, or mixed gas. The air purifier may be used for domestic purposes, for example, or may be installed in air conditioning equipment of a building or factory.

An intake filter 343 may be provided in front of the photocatalyst filter 11 to block foreign substances from entering the housing 30. The intake filter 343 may be provided in front of the intake fan 342. In the embodiment shown in the drawing, ventilation holes are shown in a portion of the intake filter 343 for convenience, but it will be understood that the ventilation holes are provided over the entire area.

A control board for controlling the air purifier may be installed below the intake port 341 on the inner surface of the intake surface plate 34.

The control board may be provided between the lower surface of the photocatalyst filter module 10 and the base plate 31. For this purpose, a space of several cm may be provided between the photocatalyst filter module 10 and the base plate 31. In this structure, the light source module 40 can block the lower part of the photocatalyst filter module 10.

The size and capacity of the photocatalyst filter module 10 can be flexibly and easily changed to suit the installation environment by adjusting the size of the photocatalyst filter 11, the number of photocatalyst filters 11, and the distance between the photocatalyst filters 11. You can. Additionally, additional photocatalyst filters 11 can be easily installed, providing excellent expandability.

The photocatalyst filter module 10 may be supported by a pair of side supports 20 respectively disposed between both sides of the photocatalyst filter module 10 and the pair of side plates 32.

The side support 20 may include a side blocking plate 21 extending in the front-back direction to block the sides of the space between two photocatalyst filters 11 arranged adjacent to each other in the longitudinal direction. Accordingly, air flowing backward through the photocatalyst filter module 10 necessarily flows backward through a plurality of photocatalyst filters 11. That is, the side blocking plate 21 can prevent the air from bypassing to another path instead of passing through the photocatalyst filter 11.

The side support 20 may further include a front blocking plate 22 extending laterally from the front end of the side blocking plate 21 and connected to the side plate 32. The front blocking plate 22 can block the space between the side blocking plate 21 and the side plate 32 from the space in front of the photocatalytic filter 11 disposed at the front.

Accordingly, the front blocking plate 22 ensures that all air flowing into the space between the intake surface plate 34 and the front of the photocatalyst filter module 10 through the intake port 341 is transferred to the photocatalyst filter module 10. Guide it to flow inside.

In order to increase photocatalytic reaction efficiency, a side additional plate 25 may be interposed between the side blocking plate 21 and the photocatalytic filter 11. For example, the side additional plate 25 may be a reflector that reflects light irradiated to the side back toward the photocatalyst filter 11, or may be an additional photocatalyst filter plate.

In order to facilitate installation of the side additional plate 25, the side support 20 may further include a side additional plate holder 23 that supports the side additional plate 25.

As shown in FIG. 5, the air purifier further includes a light source module 40 installed so that ultraviolet rays are evenly irradiated to all of the photocatalyst filters 11 constituting the photocatalyst filter module 10 without shading.

The light source module 40 includes a plurality of light sources 42.

The light source 42 may include an ultraviolet LED (421). The ultraviolet rays emitted from the ultraviolet LED 421 have the characteristic of focusing their intensity at the peak wavelength, unlike conventional ultraviolet rays that generate ultraviolet rays of a wide spectrum.

As shown in Figure 22, BaP has the best decomposition ability when irradiated with ultraviolet rays with a peak wavelength of 254 nm, and PYRE has the best decomposition ability when irradiated with ultraviolet rays with a peak wavelength of 310 nm. In other words, when ultraviolet rays with different peak wavelengths are irradiated to the photocatalyst filter, it can be seen that there is a difference in decomposition ability depending on the type of gas to be decomposed.

The present invention can increase photodecomposition efficiency through a light source 42 including an ultraviolet LED 421 having a peak wavelength particularly suitable for decomposition of the binding site of a specific gas to be decomposed.

Each of the plurality of light sources 42 may be manufactured to irradiate ultraviolet rays having a specific peak wavelength.

For example, the first light source 42-1 may be manufactured to include only one or two ultraviolet LEDs 421 having a first peak wavelength.

For example, the second light source 42-2 may be manufactured to include only the ultraviolet LED 421 having a second peak wavelength different from the first peak wavelength.

For example, the third light source 42-3 may be manufactured to include only the ultraviolet LED 421 having a third peak wavelength different from the first and second peak wavelengths.

The N-th light source 42-N may be manufactured to include only the ultraviolet LED 421 having an N-th peak wavelength different from the 1st to N-1th peak wavelengths. Here, N may be a natural number of 4 or more.

For example, the light source module 40 including a plurality of light sources 42 may include one or more first light sources 42-1 and one or more second light sources 42-2. For example, the plurality of light sources 42 may additionally include one or more third light sources 42-3. For example, the plurality of light sources 42 may additionally include one or more Nth light sources 42-N.

If the same type of ultraviolet LEDs 421 are mounted on one substrate, it is more advantageous to control the ultraviolet LEDs 421. In addition, if one light source 42 is composed of ultraviolet LEDs 421 having the same peak wavelength, the light source module 40 can be configured by combining light sources 42 with different peak wavelengths, so that the light source module 40 is optimally suited to the usage environment. It is easier to manufacture the light source module 40.

Hereinafter, the structure of the light source 42 will be described with reference to FIGS. 6 to 13.

First, referring to FIGS. 6 to 9, as an example, the light source 42 includes an ultraviolet LED 421 mounted on the base substrate 41, a condenser lens 422 installed on the ultraviolet LED 421, And it may have a first structure including a light guide lens 423 installed in the exit direction of the condenser lens 422.

The ultraviolet LED 421 may be in the form of a chip. The ultraviolet LEDs 421 may form one or two or more aggregates.

The condenser lens 422 may be provided individually for each ultraviolet LED 421, or may be provided one per set.

The light guide lenses 423 may be provided one by one in correspondence to one converging lens 422, or may be provided one per plurality of condensing lenses 422.

In the embodiment, a structure in which one condenser lens 422 is installed on one ultraviolet LED 421 and one light guide lens 423 is installed on one condenser lens is illustrated.

Next, referring to FIGS. 10 and 11, as another example, the light source 42 includes a base substrate 41 provided at one end in the vertical direction, an extension connected to the base substrate 41 and extending in the vertical direction. It may be a light source of a second structure including a substrate 425, a plurality of ultraviolet LEDs 421 mounted spaced apart in the vertical direction on the extension substrate 425, and a lens 427 provided on the ultraviolet LED 421. . The base substrate 41 may be omitted.

The lenses 427 may be installed one by one for each ultraviolet LED 421 or may be installed one for each group of a plurality of ultraviolet LEDs 421.

The extension board 425 may have a structure in which two or more extension boards 425 are arranged along the circumferential direction so that the ultraviolet LEDs 421 are arranged radially.

In the embodiment, four extension boards 425 are installed at positions corresponding to each side of a square. However, it goes without saying that four extension boards 425 can be installed corresponding to each side of an equilateral triangle, or n sheets of extension boards 425 can be installed corresponding to each side of a regular n-gon. Additionally, two extension boards 425 may be installed with their backs facing each other.

Next, referring to FIGS. 12 and 13, as another example, the light source 42 includes an inclined substrate 426 extending obliquely in the front-back direction from one end in the vertical direction, and extending in the width direction on the inclined substrate 426. It may be a light source of a third structure including an ultraviolet LED 421 mounted spaced apart, and a lens 427 provided on the ultraviolet LED 421.

The inclined substrate 426 may be connected to the base substrate 41 provided at one end in the vertical direction.

The lenses 427 may be installed one at a time for each ultraviolet LED 421 or may be installed one at a time for each group of a plurality of ultraviolet LEDs 421.

In the embodiment, three ultraviolet LEDs 421 are installed in the width direction on a pair of inclined substrates 426 installed to be symmetrical and inclined to each other, and a lens 427 is installed for each ultraviolet LED 421. is exemplified.

However, only one inclined substrate 426 may be provided. The inclined substrate 426 of the light source 42, which is installed further in front or behind the back of the photocatalyst filter module 10, may be provided so that the ultraviolet LED 421 is directed toward the photocatalyst filter 11. .

The plurality of light sources 42 described above may share the base substrate 41.

The plurality of light sources 42 may include at least one of the first structure light source, the second structure light source, and the third structure light source.

That is, the light source module 40 including the plurality of light sources 42 is composed of only light sources of the first structure, as shown in FIGS. 14 and 15, or consists of only light sources of the second structure, or is composed of only light sources of the second structure, as shown in FIGS. 14 and 15. As shown in , it can be composed of only light sources of the third structure, as well as including a light source of the first structure and a light source of the second structure, or, as shown in FIG. 17, a light source of the first structure and the light source of the third structure. It may include a light source, a light source of a second structure and a light source of a third structure, or may include a light source of a first structure, a light source of a second structure and a light source of a third structure.

The light source module 40 including the plurality of light sources 42 may include a first type of light source installed to extend upward from the lower end.

The light source module 40 including the plurality of light sources 42 may include a second type of light source installed to extend downward from the upper end.

The light source module 40 includes only a first type of light source as shown in FIG. 14, only a second type of light source, or includes a first type of light source and a second type of light source as shown in FIGS. 15 to 17. It can include both types of light sources.

The light source of the first structure, the light source of the second structure, and the light source of the third structure may all be installed in the first form or the second form, respectively.

For example, the light source module 40 may include a light source of a third structure installed in a first shape and a light source of a first structure installed in a second shape. For example, the light source module 40 may include a light source of a first structure installed in a first shape and a light source of a first structure installed in a second shape. Of course, even if not listed individually, various combinations of the structure and installation form of the light source 42 can be configured.

The first peak wavelength to the Nth peak wavelength may be selected from 300 nm to 450 nm, respectively. For example, these peak wavelengths may be 325 nm, 345 nm, 365 nm, 385 nm, or 405 nm.

For example, the first light source 42-1 having a first peak wavelength may have a first structure, a second structure, or a third structure, and may be installed in the first form or the second form. there is.

For example, in the light source module 40, a first light source 42-1 of a first structure having a first peak wavelength may be installed in a first form, and a first light source 42-1 of a second structure having a first peak wavelength may be installed in a first shape. The light source 42-1 may be installed in a first form, and the second light source 42-2 of a first structure having a second peak wavelength may be installed in a second form. That is, the peak wavelength, structure, and installation form of each of the plurality of light sources provided in the light source module 40 can be combined in various ways.

According to an embodiment of the present invention, as shown, the plurality of light sources 42 of the light source module 40 may be arranged to be spaced apart along the width direction between two photocatalyst filters 11 adjacent in the longitudinal direction.

Referring to FIGS. 18 and 21, in the light source module 40, the peak wavelengths of two light sources 42 adjacent in the width direction are different from each other.

And, referring to FIGS. 18 and 21, in the light source module 40, among the light sources 42 adjacent in the longitudinal direction with one photocatalyst filter 11 in between, each of the photocatalyst filters 11 The peak wavelengths of the two light sources 42 disposed closest in the width direction are different from each other, provided in front and behind.

Light sources installed in these different shapes can evenly distribute ultraviolet rays of different peak wavelengths.

Also, referring to FIGS. 18 and 21, the light sources arranged in a row in the air flow direction, that is, the front-back direction, may include light sources of all peak wavelengths installed in the light source module 40. Accordingly, the air flowing along the flow direction within the housing 30 can be exposed to light sources of all types of peak wavelengths installed there. As a result, the air flowing inside the housing 30 can be decomposed in contact with the photocatalyst filter 11, which is irradiated with ultraviolet rays of all peak wavelengths intended for design.

19 to 21, in the light source module 40, one of the two light sources 42 adjacent in the width direction may be a light source installed in the first type and the other may be a light source installed in the second type. .

Also, referring to FIGS. 19 to 21, in the light source module 40, among the light sources 42 adjacent in the longitudinal direction with one photocatalyst filter 11 in between, each of the photocatalyst filters 11 One of the two light sources 42 provided at the front and the rear arranged closest in the width direction may be a light source installed in the first type and the other may be a light source installed in the second type.

Light sources installed in these different shapes not only distribute ultraviolet rays of different peak wavelengths evenly, but also induce turbulence in the air flow, further increasing photocatalyst purification efficiency.

As described above, the present invention has been described with reference to the illustrative drawings, but the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can occur. In addition, although the operational effects according to the configuration of the present invention were not explicitly described and explained while explaining the embodiments of the present invention above, it is natural that the predictable effects due to the configuration should also be recognized.

Claims

A plurality of photocatalyst filters having an outer perimeter of a predetermined width and a predetermined height and spaced apart along the longitudinal direction;

A plurality of light sources including a first light source including an ultraviolet LED having a first peak wavelength and a second light source including an ultraviolet LED having a second peak wavelength different from the first peak wavelength; and

An air purifier including a housing for accommodating the photocatalyst filter and a light source,

Between two photocatalyst filters adjacent in the longitudinal direction, a plurality of light sources are spaced apart along the width direction,

An air purifier where two light sources adjacent in the width direction have different peak wavelengths.
In claim 1,

Among the light sources adjacent in the longitudinal direction with one photocatalyst filter in between, the peak wavelengths of the two light sources provided in front and behind the photocatalyst filter, respectively, and closest in the width direction are different from each other.
In claim 1,

At least some of the light sources among the plurality of light sources are a first type of light source extending from one end toward the other end in the vertical direction.
In claim 3,

Some of the other light sources among the plurality of light sources are a second type of light source extending from the other end toward one end in the vertical direction, an air purifier.
In claim 4,

An air purifier wherein one of two light sources adjacent in the width direction is a first type light source and the other is a second type light source.
In claim 4,

Among the light sources adjacent in the longitudinal direction with one photocatalyst filter in between, one of the two light sources provided in front and behind the photocatalyst filter, respectively, and arranged closest in the width direction, is a first type light source. The other is a second type of light source, an air purifier.
In claim 1,

The light source is,

A base substrate provided at one end in the vertical direction;

An ultraviolet LED mounted on the base substrate;

A condensing lens provided on the ultraviolet LED; and

An air purifier comprising a light guide lens, the entrance surface of which faces the exit surface of the condenser lens, and the light guide lens extends in the vertical direction.
In claim 1,

The light source is,

an extension board extending in the vertical direction from one end to the other end;

Ultraviolet LEDs mounted spaced apart in the vertical direction on the extension board; and

An air purifier comprising: a lens provided on the ultraviolet ray LED.
In claim 1,

The light source is,

An inclined substrate extending obliquely from one end in the vertical direction;

Ultraviolet LEDs mounted spaced apart in the width direction on the inclined substrate; and

An air purifier comprising: a lens provided on the ultraviolet LED.
In claim 1,

The first peak wavelength and the second peak wavelength are each selected from 300 nm to 450 nm.
In claim 1,

The plurality of photocatalyst filters are connected to each other by a corner frame extending in the longitudinal direction to connect the corner portion of the width-direction end and the height-direction end of each photocatalyst filter to form a photocatalyst filter module.
In claim 11,

The plurality of photocatalyst filters are connected to each other by a middle frame extending in the longitudinal direction to connect the central portion of the height-direction end of each photocatalyst filter.
In claim 1,

The photocatalytic filter is an air purifier having a rectangular flat plate shape with a plurality of porous portions penetrating in the longitudinal direction.
In claim 1,

The housing is,

an intake surface plate spaced apart in front of the photocatalyst filter and provided with an intake port for sucking air in the longitudinal direction;

an exhaust face plate spaced apart from the rear of the photocatalyst filter and provided with an exhaust port for discharging air in the longitudinal direction; and

It includes a side plate spaced apart from the side of the photocatalyst filter,

The side surfaces of the plurality of photocatalytic filters are supported by side supports including side blocking plates extending in the front and rear directions,

The side blocking plate blocks the side of the space between two photocatalyst filters arranged adjacent to each other in the longitudinal direction.
In claim 14,

The side support further includes a front blocking plate extending laterally from the front end of the side blocking plate and connected to the side plate,

The front blocking plate blocks the space between the side blocking plate and the side plate from the space in front of the frontmost photocatalytic filter.
In claim 14,

A side additional plate is interposed between the side blocking plate and the photocatalyst filter,

An air purifier wherein the side additional plate is a reflector or photocatalyst filter plate.
In claim 14,

The housing is,

a ceiling plate extending longitudinally to connect the upper end of the intake face plate and the upper end of the exhaust face plate and blocking the upper portion of the photocatalytic filter; and

An air purifier further comprising a base plate extending longitudinally to connect the lower end of the intake face plate and the lower end of the exhaust face plate and blocking the lower portion of the photocatalytic filter.