KR102266699B1 - Photocatalytic sterilizatio module - Google Patents

Abstract

The present invention provides a photocatalytic sterilization module in which an area of a photochemical reaction and the efficiency of the photoreaction are increased due to an efficient cross-sectional structure of a sterilization duct and installation of a corrugated photocatalytic scattering plate, and blow obstruction is reduced due to a small configuration of an LED UV emitter that emits UV light, and thus the emission efficiency of radicals is increased to significantly increase sterilization power and the service life is improved. The photocatalytic sterilization module according to a suitable embodiment of the present invention comprises: a sterilization duct having a trapezoidal cross section by a front plate and a rear plate parallel to each other at regular intervals and an inclined plate connected to the front plate and rear plate and inclined at a predetermined angle, including a photocatalyst sterilization chamber closed inside by the front and rear plates and the inclined plate, and having an air inlet formed at the lower portion of the photocatalytic sterilization chamber with all inner surfaces of the photocatalyst sterilization chamber coated with a photocatalyst material; a photocatalyst inclined scattering plate and a photocatalyst front scattering plate disposed on the inner side of both sides of the inclined plate and the front plate of the sterilization duct, respectively, and coated with the photocatalytic material to induce scattering and diffusion of ultraviolet rays; one or more LED ultraviolet emitters including an LED strip mounting rod with a circular cross section over a certain length and an LED strip arranged in a circular shape on the outer circumferential surface of the LED strip mounting rod to generate the LED ultraviolet rays, and arranged in the photocatalytic sterilization chamber; and an LED ultraviolet emitter support installed on the rear plate to fix and support the LED ultraviolet emitter.

Description

Photocatalytic sterilization module

The present invention relates to a photocatalytic sterilization module used for air purification and sterilization. In particular, the effective cross-sectional structure of the sterilization duct and the installation of a corrugated photocatalyst scattering plate increase the area of photochemical reaction and increase the efficiency of photoreaction, and LED that emits ultraviolet rays It relates to a photocatalytic sterilization module in which the sterilization power is greatly increased by increasing the emission efficiency of radicals by reducing the blow obstruction due to the small configuration of the ultraviolet emitter, and the service life is improved.

Photocatalytic reaction is being put to practical use in various fields such as home appliances, roads, vehicles, air treatment, medical treatment, and water quality treatment. For example, various volatile organic compounds, formaldehyde, etc., which are commonly referred to as sick house syndrome and old house syndrome, are decomposed and removed using photocatalytic reaction. As such, photocatalytic reaction is one of the representative future technologies that are in the spotlight in terms of energy and environment. Accordingly, it is currently being actively used in the energy and environmental fields. It is being actively used to decompose and remove harmful organic matter and air pollutants because it can easily remove pollutants spread all over the earth with only light without much energy. For example, a photocatalytic purification device is used for the purpose of purifying and sterilizing indoor air.

As a background technology of the present invention, as Korean Patent Registration No. 10-0982400, a 'photocatalyst plate for a purification device' is proposed. It consists of two transparent plates spaced apart from each other with a photocatalyst plate, and a substrate coated with photocatalyst powder or photocatalyst material inserted between the transparent plates on both sides. It can withstand the resistance of water and air, so the ability to purify polluted water or air is improved.

However, in the background art, there is a problem in that the sterilization power is lowered due to the flow obstruction due to the structure in which the fluid has to pass through a number of through holes formed in the photocatalyst plate, and the discharge efficiency is lowered.

Korean Patent Registration No. 10-0874130

The present invention provides an efficient cross-sectional structure of the sterilization duct and installation of a corrugated photocatalytic scattering plate to increase the area of photochemical reaction and increase the efficiency of photoreaction. It is an object of the present invention to provide a photocatalyst sterilization module in which the sterilization power is greatly increased by increasing and the service life is improved.

A photocatalytic sterilization module according to a preferred embodiment of the present invention is a photocatalytic sterilization module used for air purification and decomposition and sterilization of organic materials,

A photocatalytic sterilization chamber that has a trapezoidal cross section by a front plate and a rear plate that are parallel to each other at regular intervals, and is connected to the front plate and the rear plate and is inclined at a predetermined angle, and is closed inside by these front and rear plates and the inclined plate a sterilization duct having a photocatalyst material coated on all inner surfaces of the photocatalytic sterilization chamber, including a sterilization duct having a blower inlet formed in the lower portion of the photocatalytic sterilization chamber;

a photocatalyst inclined scattering plate and a photocatalyst front scattering plate disposed inside each of the both swash plates and the front plate of the sterilization duct and coated with a photocatalytic material to induce scattering and diffusion of ultraviolet rays;

One or more LED ultraviolet emitters arranged in the photocatalytic sterilization room, the LED strip installation rod having a circular cross section over a certain length, the LED strip being circularly disposed on the outer circumferential surface of the LED strip installation rod to generate LED ultraviolet rays;

It is characterized in that it includes a; LED ultraviolet emitter support installed on the rear plate to fix and support the LED ultraviolet emitter.

In addition, the LED ultraviolet emitter support is characterized in that in order to facilitate the replacement of the LED ultraviolet emitter, an emitter fastening clamp that is fastened to and separated from the LED ultraviolet emitter support with a bolt is further installed.

In addition, the photocatalytic inclined scattering plate and the photocatalyst front scattering plate are characterized in that the steel plate is bent to increase light diffusion and scattering efficiency, so that the ridges having an angle of 60 degrees each have a certain width and are continuously connected to form a wrinkle shape.

In addition, the LED ultraviolet emitter is characterized in that a pair is installed symmetrically left and right in the photocatalytic sterilization room.

In addition, the swash plate is installed at an angle of 50 degrees in consideration of light diffusion efficiency with respect to the rear plate.

In addition, titanium dioxide as a photocatalytic material is further coated on the outer circumferential surface of the LED strip installation rod.

In addition, the back plate is characterized in that a photocatalyst back scattering plate coated with a photocatalyst material that generates LED ultraviolet rays and photocatalyst half generated from the LED strip is further installed.

In addition, for photocatalyst scattering and diffusion, the ridge of the photocatalyst inclined scattering plate is disposed in a direction perpendicular to that of the photocatalyst front scattering plate. It is characterized in that it is arranged to match.

In addition, for internal cleaning and management of the sterilization duct, an opening for duct management is formed on the front plate of the sterilization duct, and the photocatalyst front scattering plate base on which the photocatalyst front scattering plate is mounted is detachably installed in the duct management opening. characterized in that

According to the photocatalytic sterilization module of the present invention, the efficiency of light reflection is increased due to the trapezoidal cross-sectional structure of the sterilization duct, the photocatalytic material is coated on the entire inner surface of the sterilization duct, and the area of the photochemical reaction is achieved by the installation of the additionally installed corrugated photocatalyst scattering plate And the efficiency of the light reaction is increased by increasing the scattering.

In addition, since the LED ultraviolet emitter that emits ultraviolet rays has a structure that is installed on the road in the form of a circular rod, the cross-sectional size and volume occupied inside the sterilization duct are relatively very small, so that the blow obstruction into which external air is injected is reduced, so that the emission efficiency of radicals This increase greatly increases the sterilization power.

In addition, the use of an LED strip for the LED ultraviolet emitter has the advantage of increasing the replacement cycle and lifespan.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention, so the present invention is limited to the matters described in the accompanying drawings It should not be construed as being limited.
1 is a perspective view of a photocatalytic sterilization module according to an embodiment of the present invention;
Figure 2 is an exploded perspective view of Figure 1;
Fig. 3 is a front view of Fig. 1;
FIG. 4 is an arrangement state diagram of the photocatalyst inclined scattering plate and the photocatalyst front scattering plate appearing when the photocatalyst sterilization module shown in FIG. 1 is viewed from above; FIG.
Fig. 5 is a cross-sectional view taken along line AA of Fig. 3;
Fig. 6 is a cross-sectional view taken along line BB of Fig. 3;
7 is a perspective view of the photocatalyst front scattering plate applied to FIG. 1 ;
FIG. 8 is a perspective view of the photocatalyst inclined scattering plate shown in FIG. 1. FIG.
Figure 9a is a perspective view of an LED ultraviolet emitter applied to the photocatalytic sterilization module of the present invention.
Figure 9b is a side view of the LED ultraviolet emitter shown in Figure 9a, a state in which the radiator fastening clamp is separated.
10 is a cross-sectional view in which a photocatalyst rear scattering plate is additionally installed in the photocatalyst sterilization module shown in FIG. 1;

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the presented embodiments are illustrative for a clear understanding of the present invention, and the present invention is not limited thereto.

The photocatalytic sterilization module 20 according to this embodiment has a sterilization duct 210 as shown in FIGS. 1 to 5 and generates LED ultraviolet rays therein to generate hydroxyl radicals (OH) generated by a reaction between photocatalytic materials. -) (hereinafter referred to as 'radical') performs the function of decomposing and killing organic substances such as bacteria and viruses contained in pollutants (or inhaled air) with the oxidizing power. For example, outside air may be sucked into the sterilization duct 210 by a blower (not shown) and injected.

The photocatalytic sterilization module 20 is disposed inside each of the sterilization duct 210 providing a blowing passage and a photocatalytic reaction chamber, both the inclined plates 213 and the front plate 211 of the sterilization duct 210, and is coated with a photocatalytic material. At least one LED ultraviolet emitter 240 for emitting ultraviolet light to the photocatalyst inclined scattering plate 220 and the photocatalyst front scattering plate 230, the photocatalyst inclined scattering plate 220 and the photocatalytic front scattering plate 230 for light scattering and diffusion, and It includes an LED UV emitter support 250 for supporting the LED UV emitter 240 in the sterilization duct 210 .

The sterilization duct 210 is connected to the front plate 211 and the rear plate 212 and the front plate 211 and the rear plate 212 that are parallel to each other at regular intervals and includes an inclined plate 213 inclined at a predetermined angle. do. Therefore, the sterilization duct 210 is provided with a photocatalytic sterilization chamber 214 having a trapezoidal closed cross-section by the front plate 211 , the rear plate 212 , and the inclined plate 213 . Preferably, all inner surfaces of the sterilization duct 210 are coated with a photocatalytic material to increase the photocatalytic reaction area. The inclined plate 213 is inclined at an angle of 50 degrees with respect to the rear plate 212 to further promote the light reaction. This is because, when it is greater than 50 degrees, the loss of ultraviolet rays leaving the photocatalytic sterilization chamber 214 is increased, and when it is less than 50 degrees, sufficient light diffusion of ultraviolet rays cannot be obtained. The sterilization duct 210 is made of a corrosion-resistant stainless steel plate in this embodiment, but is not limited to such a metal material. In addition, in the sterilization duct 210, the air inlet 214a is formed in the lower center of the photocatalytic sterilization chamber 214 as shown in FIGS. 2 and 4 . Accordingly, the suction air introduced through the blower inlet 214a is discharged upward through the photocatalytic sterilization chamber 214 .

For internal cleaning and management of the sterilization duct 210, an opening 211a for duct management is formed on the front plate 211 of the sterilization duct 210 as shown in FIG. 2, and a photocatalyst front scattering in the opening 211a for duct management. A photocatalyst front scattering plate base 232 on which the plate 230 is mounted is detachably installed.

As shown in FIGS. 4 and 5, the photocatalyst inclined scattering plate 220 and the photocatalyst front scattering plate 230 bend stainless steel plates so that the ridges 220a and 230a each having a wrinkle angle θ have a certain width and are continuously connected. It is in the form of wrinkles. In this embodiment, the ridges 220a and 230a form a wrinkle angle θ of 60 degrees so that light scattering and diffusion are efficiently performed in the sterilization duct 210 . This means that when the wrinkle angle (θ) is greater than 60 degrees, the loss of ultraviolet (U) generated from the LED strip 242 of the LED ultraviolet emitter 240 out of the photocatalytic sterilization chamber 214 increases, and when it is smaller than 60 degrees, the loss This is because sufficient light diffusion of ultraviolet (U) cannot be obtained.

Furthermore, for photocatalyst scattering and diffusion, as shown in FIGS. 3 and 4 , the ridges 220a of the photocatalyst inclined scattering plate 220 are disposed in a direction perpendicular to the ridges 230a of the photocatalytic front scattering plate 230. It is preferable that the longitudinal direction of the ridge 230a of the plate 230 coincides with the blowing direction of the blower 30 in order to minimize the resistance of the air flow.

As shown in FIG. 10 , a photocatalyst rear scattering plate 270 coated with a photocatalyst material that generates half of the LED ultraviolet rays and the photocatalyst generated from the LED strip 242 may be further installed on the rear plate 212 in order to increase the sterilization ability.

9a and 9b, the LED ultraviolet emitter 240 is circularly disposed on the outer peripheral surface of the LED strip installation rod 241 having a circular cross section over a certain length, the LED strip installation rod 241, and the LED strip 242 for generating LED ultraviolet rays ) and disposed in the photocatalytic sterilization chamber 214 . The outer peripheral surface of the LED strip installation rod 241 is preferably coated with a photocatalytic material. In this embodiment, a pair of LED ultraviolet emitters 240 are symmetrically positioned in the photocatalytic sterilization chamber 214 to increase the amount of radiation. LED UV rays generated from the LED strip 242 may have a wavelength in the range of 200 to 300 nm, for example.

The LED UV emitter support 250 is installed on the rear plate 212 to fix and support the LED UV emitter 230 . Here, the LED ultraviolet emitter support 250 has a radiator fastening clamp 260 that is fastened to and separated from the LED ultraviolet emitter support 250 with a bolt 261 to facilitate replacement of the LED ultraviolet emitter 230. have.

_{Titanium dioxide (TiO 2} ) was used as the photocatalytic material applied in this example. Titanium dioxide has a higher oxidizing power than chlorine or ozone, so it has excellent sterilization power, and has the ability to decompose all organic substances into carbon dioxide and water. As a photocatalyst, titanium dioxide has excellent durability and abrasion resistance, does not change itself because it functions as a catalyst, and itself is a safe and non-toxic material, and there is no concern about secondary pollution even when discarded. However, the present invention _{is not limited to titanium dioxide (TiO 2} ), and other known photocatalytic materials (ZnO, CdS, ZrO2, V2O3, WO3, perovskite-type composite metal oxide (SrTiO3), etc.) may be applied.

Unexplained code '217' is a 'blower mounting part'.

The operation of the photocatalytic sterilization module configured as described above will be described.

First, the photocatalytic sterilization module 20 generates ultraviolet (U) in the interior of the sterilization duct 210 as shown in FIG. 5 when a current is applied to the LED strip 242 on the side of the LED ultraviolet emitter 240 . In addition, when the blowing force is generated through the blowing inlet 214a, the blowing flow is generated inside the sterilization duct 210. At this time, outside air (contaminants, bacteria, viruses, etc.) is sucked through the blower inlet 214a.

In addition, ultraviolet rays generated from the LED strip 242 of the LED ultraviolet emitter 240 are radiated and collide with the inner surface of the sterilization duct 210, so that electrons are formed from the coated titanium dioxide to generate strong oxidizing power, and hydroxyl radicals (-OH) and superoxide (-O2) are formed. In this process, more radicals (OH-) are generated due to the increase in the area of the photochemical reaction by the titanium dioxide coated on the inner surface of the sterilization duct 210, the photocatalyst inclined scattering plate 220 and the photocatalyst front scattering plate 230. . Accordingly, oxidation, decomposition, and death of organic compounds such as pollutants, bacteria, and viruses included in the outdoor air introduced into the sterilization duct 210 are promoted by the increased sterilization power.

In addition, the photocatalyst sterilization module 20 is a method using an LED-type photocatalyst, and the replacement cycle of the LED strip 242 is long, so that the lifespan of the photocatalyst sterilization module 20 is several times longer than that of the conventional screw-type or filter-type photocatalyst.

In addition, since the LED ultraviolet emitter 240 has a small diameter and a long shape, it occupies a relatively small cross section and volume in the sterilization duct 210 . Due to this, the resistance disturbance of the blowing flow in the sterilization duct 210 is reduced, and thus the sterilization efficiency is improved.

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art can make various modifications and modified inventions without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The present invention is not limited by such variations and modifications, but only by the claims appended hereto.

20: photocatalyst sterilization module
210: sterilization duct
220: photocatalyst inclined scattering plate
230: photocatalyst front scattering plate
240: LED ultraviolet emitter
241: LED strip installation rod
242: LED strip
250: LED UV emitter support
260: radiator fastening clamp

Claims (9)

In the photocatalytic sterilization module 20 used for air purification and decomposition and sterilization of organic substances,
It has a trapezoidal cross section by the front plate 211 and the rear plate 212 and the front plate 211 and the rear plate 212 which are parallel to each other at regular intervals and inclined at a predetermined angle by the inclined plate 213, The photocatalytic sterilization chamber includes a photocatalyst sterilization chamber 214 closed inside by the plate 211 and the rear plate 212 and the swash plate 213, but all inner surfaces of the photocatalytic sterilization chamber 214 are coated with a photocatalytic material, and the photocatalytic sterilization chamber a sterilizing duct 210 having a blower inlet 214a formed at the lower portion of the 214;
A photocatalyst inclined scattering plate 220 and a photocatalyst front scattering plate disposed inside each of the both swash plates 213 and the front plate 211 of the sterilization duct 210 and coated with a photocatalytic material to induce scattering and diffusion of ultraviolet rays (230) and;
It consists of an LED strip installation rod 241 having a circular cross section over a certain length, an LED strip 242 that is circularly disposed on the outer peripheral surface of the LED strip installation rod 241 and generates LED ultraviolet rays, and is disposed in the photocatalytic sterilization room 214. one or more LED ultraviolet emitters 240;
A photocatalytic sterilization module comprising a; an LED ultraviolet emitter support 250 that is installed on the rear plate 212 and fixedly supports the LED ultraviolet emitter 230. The method of claim 1,
In order to facilitate the replacement of the LED UV emitter 230 in the LED UV emitter support 250, an emitter fastening clamp 260 that is bolted to and separated from the LED UV emitter support 250 is further installed. photocatalytic sterilization module. The method of claim 1,
The photocatalyst inclined scattering plate 220 and the photocatalyst front scattering plate 230 bend steel plates to increase light diffusion and scattering efficiency, so that the ridges 220a and 230a each having an angle of 60 degrees have a certain width and are continuously connected to wrinkle Photocatalytic sterilization module, characterized in that forming the shape. The method of claim 1,
A photocatalytic sterilization module, characterized in that a pair of the LED ultraviolet emitters 240 are symmetrically installed in the photocatalytic sterilization chamber 214 . The method of claim 1,
The swash plate 213 is inclined at an angle of 50 degrees with respect to the rear plate 212 in consideration of light diffusion efficiency. The method of claim 1,
A photocatalytic sterilization module, characterized in that _{titanium dioxide (TiO 2} ) is further coated on the outer peripheral surface of the LED strip installation rod 241 as a photocatalytic material. The method of claim 1,
A photocatalytic sterilization module, characterized in that the rear plate 212 is further provided with a photocatalyst rear scattering plate 270 coated with a photocatalyst material that causes LED ultraviolet rays generated from the LED strip 242 and a photocatalyst half. The method of claim 1,
For photocatalytic scattering and diffusion, the ridges 220a of the photocatalyst inclined scattering plate 220 are disposed in a direction perpendicular to the ridges 230a of the photocatalyst front scattering plate 230, and the ridges of the photocatalyst front scattering plate 230 ( 230a) The photocatalytic sterilization module, characterized in that the longitudinal direction is arranged to coincide with the blowing direction (X) in order to minimize the resistance of the air flow. The method of claim 1,
An opening 211a for duct management is formed on the front plate 211 of the sterilization duct 210 for internal cleaning and management of the sterilization duct 210, and the photocatalyst front scattering plate 230 is formed in the opening 211a for duct management. ) photocatalyst sterilization module, characterized in that the photocatalyst front scattering plate base 232 is installed detachably.

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