KR200330076Y1 - Air Filter - Google Patents
Air Filter Download PDFInfo
- Publication number
- KR200330076Y1 KR200330076Y1 KR20-2003-0024017U KR20030024017U KR200330076Y1 KR 200330076 Y1 KR200330076 Y1 KR 200330076Y1 KR 20030024017 U KR20030024017 U KR 20030024017U KR 200330076 Y1 KR200330076 Y1 KR 200330076Y1
- Authority
- KR
- South Korea
- Prior art keywords
- filter
- unit
- housing
- air
- photocatalyst
- Prior art date
Links
- 239000011941 photocatalyst Substances 0.000 claims abstract description 21
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 3
- 244000005700 microbiome Species 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 3
- 230000001699 photocatalysis Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultra-violet radiation
- A61L9/205—Ultra-violet radiation using a photocatalyst or photosensitiser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- B01J35/39—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
Abstract
본 고안은 광촉매 에어필터에 관한 것으로서, 일단이 개구되고, 타단은 폐쇄된 형태를 취하며, 그 외주면은 원주방향을 따라 요철형태로 주름진 필터여재(124)로 형성됨과 아울러 필터여재(124)의 내주면에는 광촉매가 도포된 중공의 단위필터(120)가 구비되고, 단위필터내에는 자외선램프(130)가 착탈가능하게 구비되며, 그 일면이 개구되고, 타면에는 단위필터(120)에 대응한 다수의 구멍(116)이 천공된 중공의 하우징(110)이 구비되어, 다수의 단위필터(120)가 하우징(110)의 각 구멍(116)으로 삽입되되, 단위필터(120)의 개구부는 하우징(110)의 구멍(116)상에 위치되고, 폐쇄된 단부는 하우징(110)의 개구부측에 위치되어 설치된 에어필터(100)를 구성하여, 공기중의 유해가스나 미생물 등을 효과적으로 제거하여 정화함과 아울러 에어필터(100)의 구조가 단순화되고 소량화되며, 자외선램프(130)만 교체하면 광촉매 기능을 반영구적으로 사용할 수 있어, 설치 및 운전경비가 절감되는 장점이 있다.The present invention relates to a photocatalyst air filter, one end of which is open, the other end of which is closed, and its outer circumferential surface is formed of the filter media 124 pleated in the form of irregularities along the circumferential direction of the filter media 124 A hollow unit filter 120 coated with a photocatalyst is provided on the inner circumferential surface, and an ultraviolet lamp 130 is detachably provided in the unit filter, one side of which is opened, and a plurality of unit units corresponding to the unit filter 120 on the other side. The hollow housing 110 is provided with a hole 116 of the plurality of unit filters 120 are inserted into each hole 116 of the housing 110, the opening of the unit filter 120 is the housing ( Located on the hole 116 of the 110, the closed end constitutes the air filter 100 installed located on the opening side of the housing 110, to effectively remove and purify the harmful gas or microorganisms in the air In addition, the structure of the air filter 100 is simplified and Chemistry is, by replacing only the ultraviolet lamp 130 can semi-permanently use the photo-catalytic function, there is an advantage that the installation and operation costs are reduced.
Description
본 고안은 광촉매 에어필터에 관한 것으로서, 보다 상세하게는 에어필터에 구성되는 단위필터를 원통형으로 형성하고, 그 내부에 자외선램프를 설치함으로써 에어필터의 성능을 향상시켜 유입되는 공기중의 유해가스 및 미생물 등을 제거하여 쾌적한 실내환경을 유지할 수 있도록 한 원통형 광촉매 에어필터에 관한 것이다.The present invention relates to a photocatalyst air filter, and more particularly, to form a unit filter formed in the air filter in a cylindrical shape, and install an ultraviolet lamp therein to improve the performance of the air filter, thereby introducing harmful gases in the air. The present invention relates to a cylindrical photocatalyst air filter capable of removing microorganisms and maintaining a comfortable indoor environment.
최근에는, 생활수준이 향상됨에 따라 건강에 대한 관심도가 급증하여, 대부분의 시간을 보내는 가정이나 직장내의 실내환경을 쾌적하게 유지하려는 노력이 높아지고 있다.In recent years, as the standard of living has improved, interest in health has soared, and efforts have been made to maintain a comfortable indoor environment in the home or work where most of the time is spent.
따라서, 가정이나 직장에서는 공조기를 이용하여 실내의 온.습도를 조절할 뿐만 아니라 공기를 청결하게 정화하기도 한다.Therefore, at home or work, the air conditioner is used not only to control the temperature and humidity of the room, but also to clean the air.
특히, 이러한 공조기의 공기정화는, 산업발달로 인해 건자재 등에서 방출되는 휘발성 화학물질과 대기오염으로부터 발생된 미세한 세균이나 바이러스 등도 정화시켜야 한다.In particular, the air purification of the air conditioner must purify volatile chemicals emitted from building materials and other fine bacteria and viruses generated from air pollution due to industrial development.
따라서, 종래에는 위와 같은 요구를 충족시키기 위해 카본필터를 사용하여 공기중의 화학물질을 제거하였고, 고성능필터를 사용하여 공기중의 미생물을 제거하였으나, 이는 많은 부대시설이 요구되어 관련설비가 과도하게 대량화됨은 물론, 설치 및 운전경비가 증가되는 문제점이 있었다.Therefore, in order to meet the above requirements, a carbon filter was used to remove chemicals in the air, and a high-performance filter was used to remove microorganisms in the air. Of course, there was a problem in that the mass and increased installation and operation costs.
이에, 본 고안은 전술한 바와 같은 종래의 문제점을 해소하기 위해 안출된 것으로, 광촉매가 도포된 필터여재를 원통형으로 형성하고, 그 내부에 자외선램프가 설치된 다수의 단위필터를 갖는 에어필터를 구성하여, 공기중의 유해가스 및 미생물 등을 효과적으로 제거하여 쾌적한 실내환경을 유지할 수 있도록 한 원통형 광촉매 에어필터를 제공하는데 그 목적이 있다.Accordingly, the present invention has been made to solve the conventional problems as described above, by forming a filter medium coated with a photocatalyst in a cylindrical shape, by constructing an air filter having a plurality of unit filters provided with an ultraviolet lamp therein Its purpose is to provide a cylindrical photocatalyst air filter that effectively removes harmful gases and microorganisms in the air and maintains a comfortable indoor environment.
도 1은, 본 고안에 따른 원통형 광촉매 에어필터를 도시한 사시도이다.1 is a perspective view showing a cylindrical photocatalyst air filter according to the present invention.
도 2는, 본 고안에 따른 에어필터의 하우징과 단위필터를 도시한 분리사시도이다.2 is an exploded perspective view illustrating a housing and a unit filter of the air filter according to the present invention.
도 3은, 본 고안에 따른 에어필터의 단위필터를 도시한 단면도이다.3 is a cross-sectional view showing a unit filter of the air filter according to the present invention.
도 4는, 본 고안에 따른 에어필터의 필터여재에 자외선램프에 의한 자외선이 조사되는 모습을 정면에서 도시한 도면이다.Figure 4 is a front view showing the state that the ultraviolet light is irradiated by the ultraviolet lamp to the filter medium of the air filter according to the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
100 : 에어필터 110 : 하우징100: air filter 110: housing
112 : 지지대 114 : 배기구112: support 114: exhaust port
116 : 구멍 120 : 단위필터116 hole 120 unit filter
122 : 흡기구 124 : 필터여재122: inlet 124: filter medium
126 : 지지대 128 : 소켓126: support 128: socket
130 : 자외선램프130: UV lamp
상기한 목적을 달성하기 위한 본 고안의 원통형 광촉매 에어필터는, 일단이 개구되고, 타단은 폐쇄된 형태를 취하며, 그 외주면은 원주방향을 따라 요철형태로 주름진 필터여재로 형성됨과 아울러 필터여재의 내주면에는 광촉매가 도포된 중공의 단위필터가 구비되고, 단위필터내에는 자외선램프가 착탈가능하게 구비되며, 그 일면이 개구되고, 타면에는 단위필터에 대응한 다수의 구멍이 천공된 중공의 하우징이 구비되어, 다수의 단위필터가 하우징의 각 구멍으로 삽입되되, 단위필터의 개구부는 하우징의 구멍상에 위치되고, 폐쇄된 단부는 하우징의 개구부측에 위치되어 설치된 에어필터를 구성한다.Cylindrical photocatalyst air filter of the present invention for achieving the above object, one end is opened, the other end is in a closed form, the outer peripheral surface is formed of a filter medium pleated in the form of irregularities along the circumferential direction of the filter medium A hollow unit filter coated with a photocatalyst is provided on the inner circumferential surface, and an ultraviolet lamp is detachably provided in the unit filter, one side of which is opened, and a hollow housing in which a plurality of holes corresponding to the unit filter are drilled. It is provided, a plurality of unit filters are inserted into each hole of the housing, the opening of the unit filter is located on the opening of the housing, the closed end is located on the opening side of the housing constitute an air filter.
그리고, 단위필터의 필터여재에 도포된 광촉매는, 아나타제형 산화티타늄으로 구성된다.And the photocatalyst apply | coated to the filter medium of a unit filter consists of anatase type titanium oxide.
이하, 본 고안의 바람직한 실시예를 첨부도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention in detail as follows.
첨부도면 도 1 내지 도 4는 본 고안에 따른 원통형 광촉매 에어필터를 도시한 도면이다.1 to 4 are views illustrating a cylindrical photocatalyst air filter according to the present invention.
도시된 바와 같이, 본 고안의 에어필터(100)는, 외관을 이루는 중공의 하우징(110)이 구비되는 바, 이 하우징은 그 일면 즉 후면(後面)이 개구된 배기구(114)로 형성되고, 타면 즉 전면(前面)에는 후술되는 원통상의 단위필터(120)를 삽입시켜 설치하기 위한 다수의 구멍(116)이 천공된다.As shown, the air filter 100 of the present invention is provided with a hollow housing 110 forming an external appearance, the housing is formed of an exhaust port 114 of which one side, that is, the rear surface is opened, On the other side, that is, the front surface, a plurality of holes 116 for inserting and installing the cylindrical unit filter 120 to be described later are drilled.
그리고, 하우징 전면의 각 구멍으로는 각각의 단위필터(120)가 삽입되어 설치된다.Then, each unit filter 120 is inserted into each hole in the front surface of the housing.
단위필터는, 일단이 개구된 흡기구(122)로 형성되고, 타단은 폐쇄된 원통형상을 취하며, 그 외주면은 원주방향을 따라 요철형태로 주름진 필터여재(124)로 형성되고, 이 필터여재의 내주면에는 광촉매가 도포되어 이루어진다.The unit filter is formed of an inlet 122 having one end opened, the other end of which has a closed cylindrical shape, and its outer circumferential surface is formed of a filter media 124 pleated in the form of irregularities along the circumferential direction. A photocatalyst is applied to the inner circumferential surface.
또한, 필터여재(124)의 내주면에 도포된 광촉매는, 아나타제(Anatase)형 산화티타늄(TiO2)으로서, 이는 광촉매의 기능을 활성화시키기 위함이다.In addition, the photocatalyst applied to the inner circumferential surface of the filter medium 124 is an anatase type titanium oxide (TiO 2 ), which is to activate the function of the photocatalyst.
이와 같이 하우징(110)에 삽입되어 내장.설치된 단위필터(120)는, 그 선단이 하우징의 전면에 삽입된 상태로 고정되고, 후단은 하우징의 후면에 등간격으로 이격된 지지대(112)로서 고정.설치된다.The unit filter 120 inserted and installed in the housing 110 as described above is fixed with its front end inserted into the front of the housing, and the rear end of the unit filter 120 fixed with the support 112 spaced at equal intervals from the rear of the housing. Installed
그리고, 위와 같이 하우징에 설치된 단위필터(120)는, 그 선단의 개구된 흡기구(122)가 하우징 전면상에 위치되고, 폐쇄된 후단부는 하우징의 개구부 즉 배기구(114)측에 위치되어 구비된다.In addition, the unit filter 120 installed in the housing as described above is provided with the inlet 122 opened at the front end thereof on the front surface of the housing, and the closed rear end positioned at the opening, that is, the exhaust port 114 side of the housing.
한편, 각 단위필터(120)내에는 각각의 자외선램프(130)가 착탈가능하게 구비되되, 단위필터의 선,후단부에는 자외선램프가 접속되는 소켓(128)이 구비된다.On the other hand, in each unit filter 120, each of the ultraviolet lamp 130 is detachably provided, the front and rear ends of the unit filter is provided with a socket 128 to which the ultraviolet lamp is connected.
이 소켓은, 자외선램프(130)의 착탈을 용이케 하기 위해 자외선램프가 접속되는 접속부가 축방향으로 탄력적으로 출입되도록 구성됨이 바람직하다.The socket is preferably configured such that the connecting portion to which the ultraviolet lamp is connected is elastically moved in the axial direction in order to facilitate the detachment of the ultraviolet lamp 130.
여기서, 미설명부호 "126"은 단위필터(120)의 흡기구(122)측에 구비된 소켓(128)을 지지하는 지지대를 도시한 것이다.Here, reference numeral 126 denotes a support for supporting the socket 128 provided on the inlet 122 side of the unit filter 120.
한편, 위와 같이 구성된 에어필터(100)는 원통형의 단위필터(120)내에 자외선램프(130)가 구비되어 있어, 단위필터의 외주면을 형성하는 필터여재(124)에 그늘진 부위가 없이 자외선이 고르게 조사되어 광촉매 기능이 균일하게 활성화됨으로써 필터성능이 향상된다.On the other hand, the air filter 100 configured as described above is provided with an ultraviolet lamp 130 in the cylindrical unit filter 120, the ultraviolet light is evenly irradiated on the filter media 124 forming the outer circumferential surface of the unit filter without a shaded portion. As a result, the photocatalytic function is activated uniformly, thereby improving filter performance.
상기와 같이 구성된 본 고안의 원통형 광촉매 에어필터의 작동을 설명하면 다음과 같다.Referring to the operation of the cylindrical photocatalyst air filter of the present invention configured as described above are as follows.
공조기의 작동으로 인해 강제 흡입된 외부의 공기 즉 외기가 에어필터(100)로 유입되면, 공기중의 유해가스나 미생물 등이 정화되고, 이와 같이 정화된 공기는 실내로 공급됨으로써 쾌적한 실내환경을 유지할 수 있게 된다.When the outside air, that is, outside air forced into the air filter 100 by the operation of the air conditioner flows into the air filter 100, harmful gases or microorganisms in the air are purified, and the purified air is supplied to the room to maintain a comfortable indoor environment. It becomes possible.
즉, 에어필터(100)로 유입되는 외기는, 에어필터의 하우징(110)에 설치된 단위필터(120)의 흡기구(122)로 유입되고, 유입된 외기는 단위필터의 외주면을 이루는 요철형태로 주름진 필터여재(124)를 통과하면서 정화된다.That is, the outside air introduced into the air filter 100 flows into the intake port 122 of the unit filter 120 installed in the housing 110 of the air filter, and the introduced outside air is corrugated into an uneven shape forming the outer circumferential surface of the unit filter. It is purified while passing through the filter medium 124.
이때, 단위필터(120)내에는 자외선램프(130)가 점등된 상태로 구비되어 있고, 자외선램프에 의한 자외선이 필터여재(124)에 고르게 조사됨으로써 필터여재의 내주면에 도포되어 있던 아나타제형 산화티타늄으로 이루어진 광촉매가 활성화되어 필터성능이 향상됨으로 인해 공기중의 유해가스나 미생물 등이 효과적으로 제거되어 정화된다.At this time, the ultraviolet filter 130 is provided in the unit filter 120 in a lit state, and the anatase type titanium oxide applied to the inner circumferential surface of the filter medium by irradiating the ultraviolet light by the ultraviolet lamp evenly to the filter medium 124. Since the photocatalyst is activated to improve filter performance, harmful gases or microorganisms in the air are effectively removed and purified.
이와 같이 정화된 공기는 하우징(110)의 배기구(114)를 통해 에어필터(100) 외부로 배기되고, 배기된 공기는 소정의 덕트(미도시)를 통해 실내로 공급되어 쾌적한 실내환경을 유지할 수 있게 된다.The purified air is exhausted to the outside of the air filter 100 through the exhaust port 114 of the housing 110, the exhaust air is supplied to the room through a predetermined duct (not shown) to maintain a comfortable indoor environment Will be.
이상에서 설명한 바와 같이, 본 고안의 원통형 광촉매 에어필터는, 공기중의 유해가스나 미생물 등을 효과적으로 제거하여 정화함과 아울러 에어필터의 구조가 단순화되고 소량화되며, 자외선램프만 교체하면 광촉매 기능을 반영구적으로 사용할 수 있어, 설치 및 운전경비가 절감되는 장점이 있다.As described above, the cylindrical photocatalyst air filter of the present invention effectively removes and purifies harmful gases and microorganisms in the air, and also simplifies and reduces the structure of the air filter. Can be used semi-permanently, there is an advantage that the installation and operating costs are reduced.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2003-0024017U KR200330076Y1 (en) | 2003-07-25 | 2003-07-25 | Air Filter |
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| KR20-2003-0024017U KR200330076Y1 (en) | 2003-07-25 | 2003-07-25 | Air Filter |
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| KR200330076Y1 true KR200330076Y1 (en) | 2003-10-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160073568A (en) * | 2014-12-17 | 2016-06-27 | 한국생산기술연구원 | photocatalyst filter unit and air purification apparatus |
| KR20180024400A (en) * | 2016-08-30 | 2018-03-08 | 한국전기연구원 | Air purification apparatus including a titanium oxide filter |
| KR20210051299A (en) | 2019-10-30 | 2021-05-10 | 박성걸 | Photocatalyst pipe filter |
| KR102337679B1 (en) * | 2021-05-28 | 2021-12-20 | 박성준 | sterilizing gate system |
-
2003
- 2003-07-25 KR KR20-2003-0024017U patent/KR200330076Y1/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160073568A (en) * | 2014-12-17 | 2016-06-27 | 한국생산기술연구원 | photocatalyst filter unit and air purification apparatus |
| KR101705582B1 (en) * | 2014-12-17 | 2017-02-10 | 한국생산기술연구원 | photocatalyst filter unit and air purification apparatus |
| KR20180024400A (en) * | 2016-08-30 | 2018-03-08 | 한국전기연구원 | Air purification apparatus including a titanium oxide filter |
| KR102605214B1 (en) * | 2016-08-30 | 2023-11-22 | 한국전기연구원 | Air purification apparatus including a titanium oxide filter |
| KR20210051299A (en) | 2019-10-30 | 2021-05-10 | 박성걸 | Photocatalyst pipe filter |
| KR102337679B1 (en) * | 2021-05-28 | 2021-12-20 | 박성준 | sterilizing gate system |
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