WO2023171851A1

WO2023171851A1 - Air purification device equipped with plate-type photocatalyst filter

Info

Publication number: WO2023171851A1
Application number: PCT/KR2022/006209
Authority: WO
Inventors: 김태준; 김건형
Original assignee: (주)에이버츄얼
Priority date: 2022-03-11
Filing date: 2022-04-29
Publication date: 2023-09-14
Also published as: KR20230133628A

Abstract

The present invention relates to an air purification device, and more specifically relates to an air purification device which uses a photocatalyst filter to purify air, wherein the irradiation path of ultraviolet light irradiated from an ultraviolet light lamp case to a photocatalyst filter is increased, enabling the time when ultraviolet light is irradiated on the photocatalyst filter to be increased, and a whirlpool effect is formed in a space in which contaminated air is flowing, increasing the time when the contaminated air comes into contact with the photocatalyst filter, and thus the efficiency with which contaminated air is purified can be increased.

Description

Air purification device equipped with a plate-type photocatalyst filter

The present invention relates to an air purification device, and more specifically, to purify the air using a photocatalyst filter, by increasing the irradiation path of ultraviolet rays irradiated from the ultraviolet lamp case to the photocatalyst filter, thereby reducing the time for ultraviolet rays to be irradiated to the photocatalyst filter. It relates to an air purification device that can increase the efficiency of purifying contaminated air by forming a vortex in the space where contaminated air flows, thereby increasing the time the contaminated air is in contact with the photocatalyst filter.

In general, air purification methods include methods using filters such as activated carbon, methods using plants, methods of circulating air, and methods using photocatalyst filters.

Among these air purification methods, the method of using a photocatalyst filter is to irradiate ultraviolet rays to the photocatalyst filter to purify polluted air that comes in contact with the photocatalyst filter. First, when ultraviolet rays are irradiated to the photocatalyst filter, a negative charge is formed on the surface of the photocatalyst filter. It forms electrons with electricity and holes with positive electricity.

At this time, the holes form hydroxides, which have a particularly strong oxidizing effect, and have a stronger oxidizing power than sterilizing chlorine or hypochlorous acid ozone. Through the oxidizing power, all organic substances are decomposed into carbon dioxide and water, purifying polluted air.

In addition, photocatalyst materials used include TiO ₂ , ZnO, CdS, Zr0 ₂ , V ₂ 0 ₃ , W0 ₃ , SrTiO _{2 ,} etc. Among these, TiO ₂ does not change even when exposed to light, so it can be used semi-permanently.

These photocatalytic filters have a high decomposition rate of volatile compounds even at low temperatures and have a highly efficient antibacterial function. They purify the air without changing the catalyst components, so they can be used for a long time. They do not consume electricity or heat, so there is no additional cost. It has a semi-permanent lifespan.

However, in the past, there was a problem in that the ultraviolet rays irradiated to the photocatalyst filter were not continuously maintained, so the efficiency of irradiating the photocatalyst filter with ultraviolet rays was low.

In addition, in the past, the contaminated air that came into contact with the photocatalyst filter was purified, but in most cases, the air could not be properly purified. If excessive contaminated air flows, the contaminated air cannot be circulated, so the photocatalyst filter and the sufficient amount of air cannot be circulated. There was a problem that by not being able to make contact, unpurified contaminated air could be released.

In addition, if dust or foreign matter accumulates on the photocatalyst filter, there is a problem that the reaction of the photocatalyst filter with irradiated ultraviolet rays is reduced, which may reduce the purification ability.

The present invention was devised to solve this problem and is intended to provide an air purifying device that can increase the contact time between ultraviolet rays and a photocatalytic filter.

Additionally, another object of the present invention is to provide an air purifying device that can increase the time and area in which contaminated air is in contact with a photocatalyst filter.

In addition, another object of the present invention is to provide an air purifying device in which the photocatalyst filter and ultraviolet lamp case can be easily separated and replaced.

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

In order to achieve the above object, the present invention is an air purification device that purifies polluted air and discharges it as purified air. It is provided in the shape of a column with both sides open, and is provided with an air flow space through which polluted air can pass in the longitudinal direction. , a number of ultraviolet lamps are installed on the inner side to irradiate ultraviolet rays toward the air flow space. The outer surface of the ultraviolet lamp case is a plate made of stainless steel (SUS) coated with titanium dioxide (TiO ₂ ) and is positioned in the air flow space. It is provided, and includes a photocatalyst filter through which contaminated air can pass in contact, and which has a plurality of air circulation holes spaced at regular intervals, wherein ultraviolet rays irradiated from the ultraviolet lamp contact the photocatalyst filter to purify the contaminated air. Air purification that can increase the time and area in which the ultraviolet rays come into contact with the photocatalyst filter by purifying, passing through the air circulation hole, being reflected from the other side opposite to the one side, and being irradiated again to the photocatalyst filter. Provides a device.

In a preferred embodiment, the photocatalytic filter includes an elongated first plate installed in the longitudinal direction of the air flow space and a second plate erected at the longitudinal center of the first plate and the upper and lower surfaces.

In a preferred embodiment, a first vortex forming protrusion of a predetermined size is formed at the front edge of the photocatalyst filter where the contaminated air is introduced and the rear edge where the purified air is discharged, and which protrudes to a predetermined size to resist the direction in which the air flows. , It is preferable that the first vortex forming jaw generates a vortex in the incoming contaminated air, thereby increasing the contact time between the contaminated air and the photocatalyst filter.

In a preferred embodiment, a second vortex formation protruding ridge of a predetermined size is formed on part or all of the rim of the air circulation hole to resist the direction in which air flows, and the second vortex formation ridge is formed to absorb the incoming contaminated air. It is desirable to increase the contact time between the contaminated air and the photocatalyst filter by generating a vortex.

In a preferred embodiment, the second vortex forming ridges are formed sequentially spaced apart in the direction in which air flows, and are preferably formed alternately in the upper and lower directions of the air circulation hole.

The present invention has the following excellent effects.

According to the air purifying device of the present invention, ultraviolet rays irradiated from an ultraviolet lamp are reflected on the photocatalyst filter and the ultraviolet lamp case, and as the irradiation path of ultraviolet rays increases, the contact time between ultraviolet rays and the photocatalyst filter increases, thereby purifying contaminated air. It has the advantage of increasing efficiency.

In addition, according to the air purifying device of the present invention, a plurality of air circulation holes are formed in the photocatalyst filter to allow polluted air to circulate through the photocatalyst filter, thereby increasing the contact time and area between the polluted air and the photocatalyst filter, thereby reducing polluted air. It has the advantage of increasing purification efficiency.

In addition, according to the air purifying device of the present invention, a plurality of protruding protrusions of a predetermined size are formed in the space through which air flows, so that contaminated air forms a duct in the photocatalyst filter, thereby increasing the contact time between the photocatalyst filter and the contaminated air. It has the advantage of increasing the efficiency with which polluted air is purged.

In addition, according to the air purification device of the present invention, the photocatalyst filter and ultraviolet lamp case are modularized for easy separation, so that the photocatalyst filter and ultraviolet lamp case parts can be easily replaced and cleaned, thereby maintaining the purification efficiency of the air purification device. It has advantages.

1 is a diagram showing the overall appearance of an air purifying device according to an embodiment of the present invention.

Figure 2 is a diagram for explaining a photocatalytic filter of an air purifying device according to an embodiment of the present invention.

Figure 3 is a diagram to explain in more detail the photocatalytic filter of the air purification device according to an embodiment of the present invention.

Figure 4 is a diagram illustrating a side view of the photocatalytic filter of an air purifying device according to an embodiment of the present invention.

Figure 5 is a view viewed from the front to explain the flow of ultraviolet rays irradiated inside the ultraviolet lamp case of an air purifying device according to an embodiment of the present invention.

100: air purification device 110: ultraviolet lamp case

110-1: Inner upper surface of ultraviolet lamp case 110-2: Lower upper surface of ultraviolet lamp case

110-3: One inner side of the ultraviolet lamp case 110-4: The other inner side of the ultraviolet lamp case

111: ultraviolet lamp 120: photocatalyst filter

120-1: 1st plate 120-2: 2-1 plate

120-3: 2-2 plate 121: Air circulation hole

122: first vortex forming jaw 123: second vortex forming jaw

a: polluted air b: purified air

The terms used in the present invention are general terms that are currently widely used as much as possible. However, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning described or used in the detailed description of the invention rather than the simple name of the term is considered. Therefore, its meaning must be understood.

Hereinafter, the technical configuration of the present invention will be described in detail with reference to preferred embodiments shown in the attached drawings.

However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Like reference numerals refer to like elements throughout the specification.

First, referring to FIG. 1, the air purifying device 100 according to an embodiment of the present invention is placed on a table, and contaminated air (a) is introduced and purified through a hole formed at the bottom, and then purified through a hole formed at the top. It is a device through which air is discharged.

Here, the shape of the air purifying device 100 and the location of the hole are not particularly limited as long as it can purify the incoming contaminated air (a) and discharge the purified air (b).

In addition, Figure 2 is a diagram for explaining a photocatalytic filter of an air purifying device according to an embodiment of the present invention. Referring to Figure 2, the air purifying device 100 according to an embodiment of the present invention includes a device case ( A photocatalyst filter 120 protected by an ultraviolet lamp case 110 is provided inside 101).

Here, the ultraviolet lamp case 110 serves as a passage through which the contaminated air (a) passes, and irradiates ultraviolet rays to the photocatalyst filter 120 when the contaminated air (a) passes, thereby forming the surface of the photocatalyst filter 120. Contaminated air (a) is purified through the oxidation action of holes generated in the air.

Meanwhile, FIG. 3 is a diagram for explaining in more detail the photocatalytic filter of the air purifying device according to an embodiment of the present invention. Referring to FIG. 3, the air purifying device 100 according to an embodiment of the present invention uses ultraviolet rays. It includes a lamp case 110 and a photocatalyst filter 120.

The ultraviolet lamp case 110 is provided in the shape of a pillar with both sides open, is provided with an air flow space through which contaminated air (a) can pass in the longitudinal direction, and a plurality of ultraviolet lamps 111 are installed on the inner side. , irradiate ultraviolet rays toward the air flow space.

At this time, a plurality of ultraviolet lamps 111 are installed at regular intervals, and a UV-LED chip that irradiates UV-C with a wavelength of 100 to 280 nm may be used as the ultraviolet lamp 111.

Here, the UV-LED chip operates an ultraviolet lamp with high performance, operates at low power, and can be used semi-permanently.

The photocatalyst filter 120 is a plate made of stainless steel (SUS) whose outer surface is coated with titanium dioxide (TiO ₂ ) and is provided in the air flow space, through which polluted air can come into contact and pass through, and has a plurality of plates spaced at regular intervals. Two air circulation holes 121 are formed.

Here, the efficiency of purifying the contaminated air (a) of the photocatalyst filter 120 coated with titanium dioxide (TiO ₂ ) increases as the time it is in contact with the contaminated air (a) increases.

Therefore, the air circulation hole 121 allows the contaminated air (a) to circulate in the photocatalyst filter 120, thereby improving the time that the contaminated air (a) is in contact with the photocatalyst filter 120, thereby eliminating the contaminated air (a). The efficiency of purifying a) can be increased.

Additionally, the photocatalyst filter 120 may be provided to include a first plate and a second plate so that ultraviolet rays emitted from the ultraviolet lamp case 110 can be irradiated entirely to the photocatalyst filter 120 .

More specifically, the photocatalytic filter 120 is preferably provided including an elongated first plate installed in the longitudinal direction of the air flow space and a second plate erected at the longitudinal center of the first plate and the upper and lower surfaces. It is preferable that the first plate and the second plate are perpendicular.

The reason is to ensure that the ultraviolet rays irradiated from the ultraviolet lamp case 110 are evenly radiated to all surfaces of the photocatalytic filter 120.

Meanwhile, FIG. 4 is a diagram illustrating a side view of the photocatalyst filter of an air purifying device according to an embodiment of the present invention. Referring to FIG. 4, the photocatalyst filter 120 removes the pollution introduced from the outside. By forming a vortex in the air (a), the first vortex forming protrusion 122 can be formed, which can increase the contact time between the photocatalyst filter 120 and the contaminated air (a).

Here, the first vortex forming protrusion 122 resists the direction of air flow at the front edge of the photocatalyst filter 120 where the contaminated air (a) is introduced and the rear edge where the purified air (b) is discharged. It is formed to protrude to a predetermined size so that the

At this time, the vortex refers to a phenomenon in which a part of the fluid flow swirls in the direction opposite to the main flow, and a vortex is formed on the opposite side of the direction in which the air flows based on the first vortex forming ridge 122, thereby causing the photocatalyst The contact time between the filter 120 and the contaminated air (a) can be increased.

In addition, the air circulation hole 121 is provided with a second vortex forming protrusion (a) so that some contaminated air (a) can flow into the air circulation hole 121 and the remaining contaminated air (a) can form a vortex. 123) can be formed.

More specifically, the second vortex forming protrusion 123 is formed to protrude to a predetermined size to resist the direction in which air flows on part or all of the edge of the air circulation hole 121.

At this time, the second vortex forming ridge 123 changes the flow of the contaminated air (a) so that it flows into the air circulation hole 121 or changes the direction in which the air flows based on the second vortex forming ridge 123. By forming a vortex on the opposite side, the contact time between the photocatalyst filter 120 and the contaminated air (a) can be increased.

In addition, the second vortex forming protrusions 123 are formed sequentially spaced apart in the direction in which air flows, and may be formed alternately in the upper and lower directions of the air circulation hole 121.

Here, part of the contaminated air (a) introduced into the first air circulation hole 121 by the first second vortex forming ridge 123 provided in the upper direction flows in the lower direction, and the contaminated air flowing in the lower direction ( A part of a) flows into the second air circulation hole 121 by the second vortex forming ridge 123, thereby increasing the contact time and area between the photocatalyst filter 120 and the contaminated air (a). You can.

Meanwhile, Figure 5 is a front view for explaining the flow of ultraviolet rays irradiated inside the ultraviolet ray lamp case of an air purifying device according to an embodiment of the present invention. Referring to Fig. 5, the ultraviolet rays irradiated from the ultraviolet lamp 111 are shown. is reflected by the photocatalytic filter 120 and the ultraviolet lamp case 120.

More specifically, ultraviolet rays irradiated from the inner upper surface 110-1 of the ultraviolet lamp case are directed toward the first plate 120-1, some of the ultraviolet rays are reflected by the first plate 120-1, and some of the ultraviolet rays are reflected by the first plate 120-1. Ultraviolet rays pass through the air circulation hole 121 and are reflected by the inner surface 110-1 of the ultraviolet ray lamp case 110.

For example, the ultraviolet ray c of FIG. 5 is irradiated from the inner upper surface 110-1 of the ultraviolet lamp case 110, passes through the air circulation hole 121 formed in the first plate 120-1, and then The ultraviolet rays are reflected by the inner surface 110-2 of the ultraviolet lamp case 110, and the reflected ultraviolet rays are emitted from the second-2 plate 120-3 provided in the lower direction of the first plate 120-1. It is reflected and irradiated to the lower surface of the first plate 120-1.

As another example, the ultraviolet ray d in FIG. 5 is radiated from the inner upper surface 110-1 of the ultraviolet lamp case 110, reflected by the first plate 120-1, and then returned to the ultraviolet lamp case 110. The ultraviolet rays are reflected by the inner upper surface 110-1 of the ultraviolet ray lamp case ( 110) is investigated on one inner side (110-3).

That is, the ultraviolet rays irradiated from the ultraviolet lamp 111 are reflected by the ultraviolet lamp case 110 and the photocatalyst filter 120 and are irradiated to the photocatalyst filter 120, so that the ultraviolet rays and the photocatalyst filter 120 ) can increase the contact time and area.

In addition, in the air purifying device 100 according to an embodiment of the present invention, the photocatalyst filter 110, the ultraviolet lamp 120, and the external case 130 may be modularized into a single photocatalyst filter module, It is provided in a detachable manner in the device case 101.

The reason is that when dust or foreign substances accumulate in the photocatalyst filter module, the contact between the ultraviolet rays and the photocatalyst filter 110 is reduced, and the purification performance of the photocatalyst filter 110 is reduced, so the user cannot use the photocatalyst filter module. This is to maintain the performance of the air purifying device 100 by easily removing it from the device case 101, cleaning and replacing the photocatalytic filter module.

As described above, according to the air purifying device according to the present invention, ultraviolet rays irradiated from the ultraviolet lamp case are reflected by the photocatalyst filter and the ultraviolet lamp case, and are irradiated to the photocatalyst filter, thereby reducing the contact time and area of the ultraviolet rays and the photocatalyst filter. The contact time between contaminated air and the photocatalyst filter can be increased through the air circulation hole, first vortex formation ridge, and second vortex formation ridge formed in the photocatalyst filter, and the modularized photocatalyst filter and ultraviolet lamp case can be used to increase the contact time between the polluted air and the photocatalyst filter. This has the advantage of making it easy to replace and clean the photocatalyst filter and ultraviolet lamp case.

As discussed above, the present invention has been illustrated and described with reference to preferred embodiments, but it is not limited to the above-described embodiments and is intended to be used by those skilled in the art without departing from the spirit of the invention. Various changes and modifications will be possible.

The present invention does not consume electricity or heat, so there is no additional cost, and it can sterilize polluted air with high efficiency at low temperatures for a long time, so it can be used not only in lodging facilities, shopping centers, cultural facilities, and medical institutions, but also in general homes.

Claims

An air purification device that purifies polluted air and discharges it as purified air,

An ultraviolet lamp case is provided in the shape of a column with both sides open, and is provided with an air flow space through which contaminated air can pass in the longitudinal direction. A number of ultraviolet lamps are installed on the inner side to irradiate ultraviolet rays through the air flow space. ;

It is a plate made of stainless steel (SUS) coated on the outside with titanium dioxide (TiO 2 ) and is provided in the air flow space, through which contaminated air can pass through, and where a plurality of air circulation holes spaced at regular intervals are formed. Contains a photocatalytic filter,

Ultraviolet rays irradiated from the ultraviolet lamp come into contact with the photocatalyst filter, purify the contaminated air, pass through the air circulation hole, and then are reflected from the other side opposite to one side and are irradiated back to the photocatalyst filter, An air purifying device that can increase the time and area that the ultraviolet rays contact with the photocatalyst filter.
According to clause 1,

The photocatalytic filter is

an elongated first plate installed in the longitudinal direction of the air flow space; and a second plate positioned at the longitudinal center of the first plate and the upper and lower surfaces.
According to clause 1,

A first vortex forming protrusion of a predetermined size is formed at the front edge of the photocatalyst filter where the contaminated air is introduced and the rear edge where the purified air is discharged, and the first vortex is formed. An air purifying device characterized in that the jaw generates a vortex in the incoming contaminated air, thereby increasing the contact time between the contaminated air and the photocatalyst filter.
According to clause 1,

A second vortex-forming ridge is formed on part or all of the edge of the air circulation hole, protruding to a predetermined size to resist the direction in which air flows, and the second vortex-forming ridge generates a vortex in the incoming contaminated air, An air purifying device characterized in that it increases the contact time between the contaminated air and the photocatalyst filter.
According to clause 4,

The second vortex forming ridges are formed sequentially spaced apart in the direction in which air flows, and are formed alternately in the upper and lower directions of the air circulation hole.