KR102293117B1 - Air purifier - Google Patents

Abstract

In an embodiment, the air purifier includes: a housing in which an air inlet and an air outlet are formed, and an inner space is divided into a lower space and an upper space; a first filtering unit installed in the lower space and filtering the air introduced through the air inlet; a second filter unit inserted into the upper portion of the first filter unit and performing a photocatalytic reaction; a light emitting diode unit installed in the upper space and providing ultraviolet light to the second filtering unit; and a fan unit installed on the second filter unit and blowing air introduced into the lower space toward the upper space.

Description

Air purifier {AIR PURIFIER}

The present disclosure (disclosure) relates to an air purifier, and more particularly, to an air purifier capable of efficiently performing sterilization and deodorization using ultraviolet rays and simplifying filter replacement.

As pollution of the air environment has become serious due to industrialization, the use of air purifiers to keep indoor air clean is rapidly increasing.

Such an air purifier is a device that purifies polluted air and replaces it with fresh air. It sucks the polluted air from the outside as a fan, passes through the built-in filter, filters and separates fine dust or bacteria, and then collects the fresh air to the outside. it will emit

When the air purifier is used for a certain period of time, it is necessary to replace the filter installed inside to sterilize and deodorize the indoor air. Since various types of filters are installed inside the air purifier and the installation space is different, it takes a lot of time to replace the filters and the replacement work is also cumbersome. Accordingly, there is a need in the industry for an air purifier capable of integrating filters of various configurations and simply replacing the filters.

Background art of the present invention is disclosed in Korean Patent Application Laid-Open No. 10-2008-0008501 (published on January 24, 2008, title of the invention: air purifier).

An object of the present disclosure is to provide an air purifier capable of efficiently performing sterilization and deodorization, and simplifying filter replacement.

One aspect of the present disclosure includes a housing in which an air inlet and an air outlet are formed, and an inner space is divided into a lower space and an upper space; a first filtering unit installed in the lower space and filtering the air introduced through the air inlet; a second filter unit inserted into the upper portion of the first filter unit and performing a photocatalytic reaction; a light emitting diode unit installed in the upper space and providing ultraviolet light to the second filtering unit; and a fan unit installed on the light emitting diode unit and blowing air flowing into the lower space toward the upper space.

By applying the air purifier according to the embodiment of the present disclosure, the sterilization and deodorization action through the light emitting diode emitting ultraviolet rays can be efficiently performed.

In an embodiment of the present disclosure, various filters may be integrated to simplify replacement of the filters.

In an embodiment of the present disclosure, the UV light emitting diode applied for sterilization and deodorization has advantages in that it can be miniaturized and has excellent durability compared to a conventional UV lamp using a thermoelectron and a light emitting material. In addition, the light emitting diode has an advantage in that it has a long lifespan.

1 is a perspective view schematically illustrating an air purifier according to an embodiment of the present disclosure.
2 is a cross-sectional view schematically illustrating an air purifier according to an embodiment of the present disclosure.
3 is a perspective view schematically illustrating a light emitting diode unit according to an embodiment of the present disclosure.
4 is a cross-sectional view schematically illustrating replacement of a filter in the air purifier according to an embodiment of the present disclosure.

Hereinafter, embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. However, the technology disclosed in the present disclosure is not limited to the embodiments described herein and may be embodied in other forms. In the drawings, in order to clearly express the components of each device, the sizes such as width and thickness of the components are slightly enlarged.

When an element is referred to as being positioned 'above' or 'below' another element in this specification, it means that the element is positioned directly 'above' or 'below' another element, or an additional element is placed between those elements. It includes all meanings that can be interposed. In this specification, the terms 'upper' or 'lower' are relative concepts set from the viewpoint of the observer. may mean

The same reference numerals in the plurality of drawings refer to elements that are substantially the same as each other. In addition, the singular expression should be understood to include the plural expression unless the context clearly indicates otherwise, and terms such as 'comprise' or 'have' are used to describe the feature, number, step, action, component, or part being described. or a combination thereof, but it is to be understood that it does not preclude in advance the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

1 is a perspective view schematically showing an air purifier according to an embodiment of the present disclosure, FIG. 2 is a cross-sectional view schematically showing an air purifier according to an embodiment of the present disclosure, and FIG. 3 is an embodiment of the present disclosure It is a perspective view schematically showing a light emitting diode unit according to the present disclosure, and FIG. 4 is a cross-sectional view schematically illustrating replacement of a filter in the air purifier according to an embodiment of the present disclosure.

1 and 2, the air purifier according to an embodiment of the present disclosure includes a housing 10, a first filter unit 20, a second filter unit 500, a light emitting diode unit 30, and a fan unit ( 60) is included.

The housing 10 is a case in which an internal space of a certain size is formed, and an air inlet 11 and an air outlet 12 are formed therein. The air flowing in from the air inlet 11 is discharged through the air outlet 12 in a purified state by changing the flow inside the housing 10 , sterilizing and deodorizing.

The housing 10 includes a lower space 13 adjacent to the air inlet 11 and an upper space 14 adjacent to the air outlet 12 . The lower space 13 forms the lower part of the housing 10 , and the first filtering unit 20 and the second filtering unit 50 are installed in the lower space 13 . The upper space 14 forms the upper part of the housing 10 , and the light emitting diode part 30 and the fan part 60 are installed.

In addition, in the lower space 13 , a plurality of holes are formed in the lower sidewall of the housing 10 , and indoor air is introduced into the housing 10 through the air inlet 11 . The lower space 13 may be provided with a plurality of side walls on the outer surface. The sidewalls may be curved to reduce air resistance. As an example, the sidewall may be formed in a hemispherical shape. In the lower part of the housing 10, moving wheels may be installed at four corners to support the entire air purifier according to the present invention and to move it.

In the lower space 13, the lower plate 41 constituting the lower surface, the upper plate 42 installed on the upper part of the lower plate 41, and an elastic member that is elastically deformable and disposed between the lower plate 41 and the upper plate 42 ( 45) is installed. The elastic member 45 may be formed of a coil spring that is compression-elastic. The first filtering unit 20 may be elastically supported in the lower part of the lower space 13 by the elastic member 45 . An upper support member 44 is installed on the upper surface of the lower space 13 , and a lower support member 43 is installed on the upper plate 42 . The upper support member 44 and the lower support member 43 may be formed to be recessed inside. The lower support member 43 may be fastened to the upper plate 42 by welding or bolting, and may be placed in a state mounted on the upper plate 42 . The upper support member 44 may be fixed to the upper surface of the lower space 43 by welding or bolting. The upper and lower portions of the hollow cylindrical first filtering unit 20 are respectively supported by the upper support member 44 and the lower support member 43 , and may be fixed in the lower space 13 of the housing 10 . .

The installation method of the first filtration unit 20 may proceed as follows. In a state in which the elastic member 45 is compressed by applying pressure to the upper plate 42 in the direction of the lower plate 41 , the first filtering unit 20 is placed on the lower support member 43 to correspond to the upper support member 44 . place it Then, the pressure applied to the upper plate 43 is released, so that the elastic member 45 is elastically recovered. In this process, the lower support member 43 and the upper support member 44 may be fixed to both upper and lower ends of the first filtering unit 20 under the elastic force of the elastic member 45 .

A guide plate 15 dividing the housing 10 into an upper space 14 and a lower space 13 is installed. The guide plate 15 has a central part through it and is fixed to the inner side of the housing 10, so that the air introduced through the air inlet 11 by the guide plate 15 does not go up directly to the upper part of the housing 10. Without, guide to pass through the first filtration unit (20).

One surface of the housing 10 is made of an opening and closing plate 17 that can be opened and closed. The opening/closing plate 17 opens and closes one surface of the lower space 13 of the housing 10 , and the first filtration unit 20 or the second filtration unit installed in the lower space 13 by opening the opening/closing plate 17 . (50) can be replaced. In this case, the first filter unit 20 and the second filter unit 50 are disposed adjacent to each other, so that the first filter unit 20 and the second filter unit 50 may be integrally replaced. A fixing member 18 is protruded from the inner edge of the opening/closing plate 17, and the fixing member 18 is aligned with the fixing hole 19 formed through the inside of the housing 10, and then a fastening member made of bolts or the like ( 70) is fixed. The opening/closing plate 17 may open one surface of the housing 10 by releasing the fastening member 70 .

The first filtration unit 20 is installed in the lower space 13 and is a device that primarily filters the air introduced through the air inlet 11 . The first filtering unit 20 has a cylindrical shape and includes a carbon filter 21 and a HEPA filter 22 .

The carbon filter 21 includes activated carbon and a catalyst, and organic chemicals in the air are filtered while passing through the carbon filter 21 . Accordingly, the carbon filter 21 performs a deodorizing action on the air introduced through the air inlet 11 . In this embodiment, the carbon filter 21 is configured together with the photocatalytic filter and the photocatalyst light emitting diode to increase the deodorization efficiency of the air purification device.

The HEPA filter 22 is installed inside the carbon filter 21 , and removes fine dust in the indoor air that has passed through the carbon filter 21 .

In the above-described embodiment, although the carbon filter 21 and the HEPA filter 22 are described as the configuration of the first filtration unit 20, it is not necessarily limited thereto, and various types of well-known functional filters are produced. One filtration unit 20 may be configured.

The second filtration unit 50 is formed of a photocatalytic filter including a photocatalytic medium that performs a photocatalytic reaction by ultraviolet light provided by the light emitting diode unit 30 , and is inserted into the upper interior of the first filtration unit 20 and is a light emitting diode. It is installed to face the part 30 . Accordingly, the first filtration unit 20 and the second filtration unit 50 may cooperate with each other to perform filtration. The second filtering unit 50 may include titanium oxide (TiO2), zinc oxide (ZnO), tungsten oxide (WO3), or zirconium oxide (ZrO2). The second filtering unit 50 may be formed in a layered structure including titanium oxide (TiO2). The second filtering unit 50 may be made of a layer coated on a material through which an air flow can flow, such as metal foam or a porous metal material.

The second filter unit 50 performs a photocatalytic reaction with ultraviolet rays of about 300 to 400 nm emitted from the light emitting diode unit 30 for photocatalysis. In the second filter unit 50, when the ultraviolet light emitted from the light emitting diode unit 30 is absorbed, electrons (e-) and holes (+) are generated on the surface, and the electrons react with oxygen on the surface of the photocatalytic medium to form superoxide Anions (O2-) can be generated. In addition, holes react with moisture present in the air to generate hydroxyl radicals (OH-), and the generated hydroxyl radicals can oxidatively decompose organic materials. As a result, pollutants and odor substances in the air introduced into the air purifier can be decomposed and converted into water and carbon dioxide. Accordingly, the second filtration unit 50 may cooperate with the light emitting diode unit 30 to perform a deodorizing action on the introduced air.

In this embodiment, the first filtration unit 20 may be installed in the lower space 13 along the inner wall surface of the housing 10 adjacent to the air inlet 11 . Specifically, the first filtering unit 20 may be disposed to be spaced apart from the inner wall surface by a predetermined distance while enclosing the inner wall surface of the cylindrical housing 10 . The second filtering unit 50 may be disposed on a surface substantially perpendicular to the inner wall surface of the housing 10 . The first filtering unit 20 and the second filtering unit 50 may be disposed adjacent to each other in the lower space 13 . Therefore, the first filter unit 20 and the second filter unit 50 can be easily replaced.

The light emitting diode unit 30 is installed in the upper space 14 , is installed to face the second filter unit 50 , and emits ultraviolet rays to provide ultraviolet rays to the second filter unit 50 . The light emitting diode unit 30 may include a photocatalyst light emitting diode acting on the second filtering unit 50 including a photocatalytic filter and a sterilizing light emitting diode for removing bacteria. The light emitting diode for photocatalysis may emit ultraviolet light of about 300 to 400 nm, and the light emitting diode for sterilization may emit ultraviolet light of about 200 to 300 nm.

Referring to FIG. 3 , the light emitting diode unit 30 includes an annular member 31 , a support member 32 , and an ultraviolet light emitting unit 33 . The annular member 31 is mounted in the upper space 14 and has an empty center and is formed in an annular shape having a predetermined width and diameter. The support member 32 is to be installed in the center of the annular member 31, the ultraviolet ray emitting part 33 is attached and fixed. The support member 32 is formed in a cross shape (+) in the center of the annular member 31 . The ultraviolet emitting unit 33 is fixed on the support member 32 , and emits ultraviolet rays toward the second filtering unit 50 . In one embodiment, the ultraviolet emitting unit 33 is installed on the support member 32 to emit ultraviolet rays in a downward direction to face the second filtering unit 50 . The light emitting diode unit 30 may be selectively turned on to emit light under the control of a control device (not shown). Contrary to that shown, in some embodiments, the support member 32 is not only cruciform, but various modifications are possible. That is, the support member 32 has a vent hole for smoothly flowing air from the air inlet 11 to the air outlet 12 , the area of the light emitting diode unit 30 mounted on the printed circuit board 35 . It may have various shapes and forms as long as it satisfies a sufficiently secure condition, or a condition in which the light emitting diode unit 30 can uniformly irradiate the second filter unit 50 with ultraviolet rays.

The UV emitting unit 33 may include at least one COB (chip on board) type light emitting diode chip or at least one light emitting diode package mounted on the printed circuit board 35 . The UV emitting unit 33 may be manufactured to consume power of about 1000 mW or less. As shown in FIG. 3 , a COB (chip on board) type light emitting diode chip or light emitting diode package may be arranged in a plurality of columns on the printed circuit board 35 . In addition, the light emitting diode chip or the light emitting diode package may be arranged on the printed circuit board 35 , but is not limited thereto, and may be arranged in various other forms on the printed circuit board 35 .

The fan unit 60 is installed on the upper portion of the light emitting diode unit 30 , and blows the air introduced into the lower space 13 through the air inlet 11 into the upper space 14 . By the operation of the fan unit 60, the air in the lower space 13 passes through the first filter unit 20 and the second filter unit 50, and passes through the light emitting diode unit 30 of the upper space 14. Sterilization and deodorization are performed.

The fan unit 60 includes a fan 61 and a fan motor 62 . The fan 61 is installed to face the air outlet 12 and includes a plurality of blades for blowing the air introduced into the lower space 13 to the upper space 14 . The fan motor 62 is shaft-coupled to the fan 61 and is a power source for pivotally rotating the fan 61 .

2 and 4, the operation of the air purifier according to an embodiment of the present invention will be described.

Indoor air is introduced into the lower space 13 of the housing 10 through the air inlet 11 . The air introduced into the lower space 13 is blown into the upper space 14 by natural convection by the operation of the fan unit 60 or by forced convection by the operation of the fan unit 60 . At this time, the rising air is blocked by the guide plate 15 and introduced into the first filtration unit 20 .

The air is primarily sterilized and deodorized while passing through the carbon filter 21 and the HEPA filter 22 in the first filtration unit 20 .

The air primarily filtered while passing through the first filter unit 20 passes through the second filter unit 50 inserted and installed in the upper portion of the first filter unit 20 . In the second filtration unit 50 , which performs a photocatalytic reaction by the ultraviolet rays provided from the light emitting diode unit 30 , pollutants and odor substances in the air are decomposed, and sterilization and deodorization are performed secondary.

The air filtered through the first filter unit 20, the second filter unit 50, and the light emitting diode unit 30 is directed toward the air outlet 12 by the operation of the fan unit 60 to the outside of the air purifier. It is exhausted and provides purified air to the room.

And, when the use of the first filtration unit 20 and the second filtration unit 50 has elapsed for a certain period of time, the opening plate 17 of the housing 10 is opened, and the integrated first filtration unit 20 and the first filtration unit 20 and The second filter unit 50 is removed, and the first filter unit 20 and the second filter unit 50, which are new filters, are inserted into the lower space 13 of the housing 10 . The housing 10 opened after being replaced with a new filter is closed by the opening/closing plate 17 and the fastening member 70 .

On the other hand, when the used first filtration unit 20 is removed from the lower space 13 of the housing 10 , the lower support member 43 and the upper plate 42 for supporting the lower portion of the first filtration unit 20 . After compressing the elastic member 45 by pressing , the upper portion of the first filtering unit 20 is released from being supported by the upper support member 44 . After releasing the support from the upper support member 44 , the first filtering unit 20 may be detached from the lower support member 43 .

When the first filtering unit 20 is inserted into the lower space 13 of the housing 10 , the elastic member 45 is compressed by pressing the lower support member 43 and the upper plate 42 , the first Insert the lower part of the filtering unit 20 into the lower support member (43). Then, when the upper portion of the first filtering unit 20 is directed toward the upper support member 44 and the force pressing the lower support member 43 and the upper plate 42 is removed, the elastic member 45 elastically recovers. The upper plate 42 and the lower support member 43 move upward. At this time, the upper portion of the first filtering unit 20 may be fixed by the upper support member (44).

As described above, the embodiments of the present application are illustrated and described with drawings, but this is for explaining what is intended to be presented in the present application, and is not intended to limit what is intended to be presented in the present application to the shape presented in detail. Various other modifications will be possible as long as the technical idea presented in the present application is reflected.

10: housing 11: air inlet
12: air outlet 13: lower space
14: upper space 15: guide plate
17: open plate 18: fixing member
19: fixing hole 20: first filtration unit
21: carbon filter 22: hepa filter
30: light emitting diode part 31: annular member
32: support member 33: UV emitting part
35: printed circuit board 41: lower plate
42: upper plate 43: lower support member
44: upper support member 45: elastic member
50: second filtration unit 60: fan unit
61: fan 62: fan motor
70: fastening member

Claims (14)

a housing in which an air inlet and an air outlet are formed, and an inner space is divided into a lower space and an upper space;
a first filtering unit installed in the lower space, filtering the air introduced through the air inlet, and including a plurality of filters;
a second filter unit which is inserted and installed inside the upper portion of the first filter unit and performs a photocatalytic reaction including a material providing a photocatalytic reaction;
a light emitting diode unit installed in the upper space and installed to face the second filter unit to provide ultraviolet light to the second filter unit;
a fan unit installed in the upper space and blowing air introduced into the lower space toward the upper space;
a lower plate installed in the lower space of the housing and forming a lower surface of the housing;
an upper plate installed on the upper part of the lower plate;
an elastic member disposed between the upper plate and the lower plate and elastically deformable;
an upper support member installed on the upper surface of the lower space of the housing and having a concave recessed structure; and
It is installed on the upper plate and includes a lower support member having a concavely recessed structure;
The fan unit,
a fan facing the air outlet and blowing air sucked in from the lower space toward the upper space; and
Including; a fan motor for rotating the fan;
The lower space of the housing is formed by being surrounded by a plurality of lower sidewalls, and one sidewall of the plurality of lower sidewalls is made of an opening and closing plate that can be opened and closed,
The air inlet consists of a plurality of holes formed in each of the plurality of lower sidewalls,
The first filtering unit is formed to surround the lower space along the plurality of lower sidewalls,
The first filter unit is fixed to the lower space of the housing by the upper support member and the lower support member,
All of the plurality of filters of the first filter unit are inserted into the upper support member and the lower portion is inserted into the lower support member,
The air purifier, characterized in that by pressing the upper plate to compress the elastic member to detach or insert the upper portion and the lower portion of the first filtering unit from the upper support member and the lower support member.
According to claim 1,
The first filtration unit air purifier, characterized in that it comprises a carbon filter and a HEPA filter.
According to claim 1,
The light emitting diode unit,
An annular member that has a hollow center and is formed in an annular shape;
a support member installed in the center of the annular member; and
and an ultraviolet emitting unit fixed on the support member and emitting ultraviolet rays toward the second filtering unit.
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