KR19990017057A - Electrostatic precipitator - Google Patents
Electrostatic precipitator Download PDFInfo
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- KR19990017057A KR19990017057A KR1019970039824A KR19970039824A KR19990017057A KR 19990017057 A KR19990017057 A KR 19990017057A KR 1019970039824 A KR1019970039824 A KR 1019970039824A KR 19970039824 A KR19970039824 A KR 19970039824A KR 19990017057 A KR19990017057 A KR 19990017057A
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- South Korea
- Prior art keywords
- filter
- electrostatic precipitator
- collecting
- dust
- photocatalyst
- Prior art date
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- 239000012717 electrostatic precipitator Substances 0.000 title claims abstract description 14
- 239000011941 photocatalyst Substances 0.000 claims abstract description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 230000001877 deodorizing effect Effects 0.000 abstract description 10
- 230000001954 sterilising effect Effects 0.000 abstract description 6
- 239000000428 dust Substances 0.000 description 20
- 238000006243 chemical reaction Methods 0.000 description 9
- 235000019645 odor Nutrition 0.000 description 8
- 229910010413 TiO 2 Inorganic materials 0.000 description 7
- 244000005700 microbiome Species 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 238000011045 prefiltration Methods 0.000 description 4
- 238000004332 deodorization Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000013032 photocatalytic reaction Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- -1 hydroxide ions Chemical class 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- OUUQCZGPVNCOIJ-UHFFFAOYSA-M Superoxide Chemical compound [O-][O] OUUQCZGPVNCOIJ-UHFFFAOYSA-M 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- A61L9/22—Ionisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
- B03C3/016—Pretreatment of the gases prior to electrostatic precipitation by acoustic or electromagnetic energy, e.g. ultraviolet light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
Abstract
본 발명은 전기집진기에서 탈취/살균 기능을 갖게 하는 것에 관한 것으로, 전리부(A)와 포집부(B)를 구비한 전기집진기에 있어서, 전리부(A)와 포집부(B)사이에 광촉매 필터(17)가 구비된 것을 특징으로 하는 광촉매 필터를 구비한 전기집진기에 관한 기술이다.The present invention relates to having a deodorizing / sterilizing function in an electrostatic precipitator, wherein an electrostatic precipitator having an ionizing unit (A) and a collecting unit (B) comprises a photocatalyst between the ionizing unit (A) and the collecting unit (B). The present invention relates to an electrostatic precipitator with a photocatalyst filter, characterized in that a filter 17 is provided.
Description
본 발명은 전기집진기의 탈취/살균장치에 관한 것으로, 보다 상세하게는 전리부와 포집부사이에 광촉매 필터를 구비하여 미생물의 살균 및 탈취효능을 갖는 전기집진기에 관한 것이다.The present invention relates to an apparatus for deodorizing / sterilizing an electrostatic precipitator, and more particularly, to an electrostatic precipitator having a photocatalyst filter between an ionizing unit and a collecting unit having a sterilizing and deodorizing effect of microorganisms.
종래의 전기집진기는 도 1 및 도 2에 나타낸 바와 같이, 본체(1) 전방에는 모터의 구동력을 받아 회전하면서 흡입력을 발생시키는 팬(2)에 의해 실내공기가 흡입되는 흡입그릴(3)이 설치되고, 흡입그릴(3) 후방에는 1차적으로 큰 먼지를 제거하는 프리필터(4)가 설치되며, 프리필터(4) 후방에는 방전선(5)과 평판으로된 방전대응극(6)이 일정간격을 두고 절연되어 미세한 먼지를 강제로 전리시키는 전리부(A)가 설치된다.As shown in FIGS. 1 and 2, a conventional electrostatic precipitator has a suction grill 3 in which indoor air is sucked by a fan 2 that generates suction while rotating by receiving a driving force of a motor. The pre-filter 4 for removing large dust is installed at the rear of the suction grill 3, and the discharge line 5 and the discharge counter electrode 6 made of a flat plate are fixed at the rear of the pre-filter 4. An ionization part A is insulated at intervals and forcibly ionizes fine dust.
그리고 전리부(A) 후방의 포집부케이스(7)내에는 순차적으로 절연성이 좋은 수지물인 포집전극판(8)과 가속전극판(9)이 삽입되며, 포집전극판(8)과 가속전극판(9) 각각의 외주연에는 간격을 유지하는 돌기(10)가 형성되고, 상기 돌기가 형성된 포집전극판(8) 및 가속전극판(9)의 중앙에는 도전성 도료 또는 알루미늄박지 등의 도전층으로 이루어진 포집부(B)로 구성된다.In addition, a collecting electrode plate 8 and an acceleration electrode plate 9, which are resins having good insulation, are sequentially inserted into the collecting part case 7 behind the ionizing unit A, and the collecting electrode plate 8 and the accelerating electrode plate are inserted. (9) Each of the outer periphery is formed with a projection 10 to maintain a gap, the center of the collecting electrode plate 8 and the acceleration electrode plate 9 is formed with a conductive layer such as conductive paint or aluminum foil It consists of the collection part B which consisted of.
상기 전리부(A) 및 포집부(B)를 집진필터라 한다.The ionizing portion A and the collecting portion B are called dust collecting filters.
상기 포집부(B) 후방에는 탈취필터(11)가 구성된다.The deodorizing filter 11 is configured behind the collecting part B.
상기 포집전극판 인가단자(12)는 전리부의 방전선(5)과 접지되고, 가속전극판 인가단자(13)는 방전선(5)과 동일전극의 전압이 인가되도록 하며, 전리부케이스(14)에 설치된 지지대(15)를 통하여 방전선(5)에 통상직류 6∼8㎸의 전압이 인가되도록 한다.The collecting electrode plate applying terminal 12 is grounded with the discharge line 5 of the ionizing portion, and the acceleration electrode plate applying terminal 13 allows the voltage of the same electrode to be applied to the discharge line 5 and the ionizing portion case 14. 6 to 8 kW of direct current is applied to the discharge line 5 through the support 15 provided in the "
상기 구성에 따른 작동을 설명한다.The operation according to the above configuration will be described.
전원이 인가되면 팬(2)의 흡입력에 따라 공기가 흡입그릴(3)을 통해서 유입되어 프리필터(4)에서 큰 먼지는 제거되고, 방전선(5)에 전압이 인가되면 방전대응극(6)과의 사이에 코로나 방전이 발생되어 이 사이를 통과한 미세먼지는 하전을 갖고 강제 전리된다.When power is applied, air flows through the suction grill 3 according to the suction force of the fan 2, so that large dust is removed from the prefilter 4, and when a voltage is applied to the discharge line 5, the discharge counter electrode 6 Corona discharge is generated between) and fine dust passing between them is charged and forcedly ionized.
상기 하전된 먼지가 포집부케이스(7) 내부를 통과하면 가속전극판(9)과 포집전극판(8)사이의 전계강도에 의해 상기 포집전극판(8)의 도전층에 쿨롱력의 작용으로 먼지가 포집되고, 가속전극판(9)의 도전층에도 일부 먼지가 포집되며, 냄새성분은 탈취필터(11)에서 제거되어 청정공기가 토출그릴(16)을 통해서 외부로 배출된다.When the charged dust passes inside the collecting part case 7, the electric field strength between the accelerating electrode plate 9 and the collecting electrode plate 8 causes the Coulomb force to act on the conductive layer of the collecting electrode plate 8. Dust is collected, and some dust is also collected in the conductive layer of the accelerating electrode plate 9, and the odor component is removed from the deodorizing filter 11 so that clean air is discharged to the outside through the discharge grill 16.
그러나, 먼지중에는 각종 미생물이 부착되어 공기중을 이동하는데 이와 같은 먼지가 포집부의 각 극판에 장기적으로 퇴적됨에 따라 미생물 증식으로 부패되어 악취가 발생되며, 포집부에 포집되지 않은 미생물을 포함한 즉 미세먼지는 탈취필터를 통과하여 외부로 배출될 우려가 있다.However, in the dust, various microorganisms are attached and move in the air. As these dusts accumulate on each pole plate of the collecting unit for a long time, they are decayed by the growth of microorganisms and odor is generated. There is a risk of passing through the deodorizing filter to the outside.
또한, 탈취필터(11)가 있다 하여도 냄새를 완전히 제거하는데는 한계가 있다.In addition, even if there is a deodorizing filter 11, there is a limit to completely remove the odor.
본 발명은 상기한 종래의 문제점을 해결하기 위해 안출한 것으로, 전리부와 포집부사이에 광촉매필터를 구비함으로써, 전리부의 방전선에서 발생되는 자외선과 광촉매의 작용으로 미생물을 포함한 먼지 및 냄새가 포집부에 도달하기전에 살균/탈취시켜 옥외로 배출되는 공기를 청정하게 하는데 그 목적이 있다.The present invention has been made to solve the above-mentioned conventional problems, by providing a photocatalyst filter between the ionizing portion and the collecting portion, dust and odor including microorganisms by the action of ultraviolet light and photocatalyst generated in the discharge line of the ionizing portion The purpose is to clean the air discharged to the outside by sterilizing / deodorizing before reaching.
도 1은 종래의 전기집진기를 나타낸 종단면도1 is a longitudinal sectional view showing a conventional electrostatic precipitator
도 2는 도 1에 설치된 집진필터의 분해사시도2 is an exploded perspective view of the dust collecting filter installed in FIG.
도 3은 본 발명에 따른 광촉매필터가 구비된 집진필터를 나타낸 종단면도Figure 3 is a longitudinal cross-sectional view showing a dust collecting filter equipped with a photocatalyst filter according to the present invention
도 4는 본 발명의 타실시예를 나타낸 종단면도Figure 4 is a longitudinal cross-sectional view showing another embodiment of the present invention
도 5는 TiO2광촉매 반응 메카니즘 상태도5 is a state diagram of the TiO 2 photocatalytic reaction mechanism
도 6은 본 발명에 따른 탈취효율을 나타낸 그래프6 is a graph showing the deodorization efficiency according to the present invention
＊ 도면의 주요부분에 대한 부호의 설명＊ Explanation of symbols on main parts of drawing
A : 전리부 B : 포집부A: ionizer B: collector
17: 광촉매필터 18: 섬유필터17: photocatalyst filter 18: fiber filter
상기 목적 달성을 위한 본 발명은 전리부와 포집부를 구비한 전기집진기에 있어서, 상기 전리부와 포집부사이에 광촉매필터를 설치하여서된 것이다.The present invention for achieving the above object is to provide a photocatalyst filter between the ionizing portion and the collecting portion in the electrostatic precipitator having an ionizing portion and the collecting portion.
도 3은 본 발명에 따른 일실시예이고, 도 4는 본 발명에 따른 타실시예를 나타낸 집진필터에 대한 종단면도이다.Figure 3 is an embodiment according to the present invention, Figure 4 is a longitudinal sectional view of a dust collecting filter showing another embodiment according to the present invention.
이에 나타낸 바와 같이, 방전선(5)과 방전대응극(접지전극)(6)으로 구성된 전리부(A)와 가속전극판과 포집전극판으로 구성된 포집부(B) 사이에 광촉매 물질이 금망에 코팅된 광촉매필터(17)를 구비하거나, 도 4와 같이 광촉매필터(17)와 전리부(A) 사이에 섬유필터(18)를 구비할 수 있다.As shown here, a photocatalyst material is interposed between the ionizing portion A composed of the discharge line 5 and the discharge counter electrode (grounding electrode) 6 and the collecting portion B composed of the acceleration electrode plate and the collecting electrode plate. A coated photocatalyst filter 17 may be provided, or a fiber filter 18 may be provided between the photocatalyst filter 17 and the ionizing unit A as shown in FIG. 4.
상기 구성에 따라 전원이 인가되면 도 2와 같이 팬(2)의 흡인력으로 공기가 흡입그릴(3)을 통해서 유입되어 프리필터(4)에서 큰 먼지는 걸러지고, 이를 통과한 먼지는 전리부(A)를 통과하게 되는데, 이때 방전선(5)에 전압이 인가된 상태임으로 방전대응극(6)과의 사이에 코로나 방전이 발생되어 이 사이를 통과한 먼지는 하전을 갖고 전리된다.When power is applied according to the above configuration, air is introduced through the suction grill 3 by the suction force of the fan 2 as shown in FIG. 2, so that large dust is filtered out of the prefilter 4, and the dust passed through the ionizing part ( A) is passed. At this time, a corona discharge is generated between the discharge counter 5 and the discharge counter electrode 6 in a state where voltage is applied to the discharge line 5, and the dust passing through the discharge is charged with charge.
상기 전리된 미생물을 포함한 먼지 및 냄새는 광촉매필터(17)를 거치게 된다.Dust and odor including the isolated microorganisms are subjected to the photocatalyst filter 17.
이때 촉매는 전리부(A)의 방전선(5)에서 조사되는 자외선을 흡수하여 에너지가 높은 상태가 되고, 그 에너지를 반응물질에 주어 강한 산화력을 갖는 반응을 일으켜 미생물의 살균 및 냄새를 분해시키는 작용을 한다.At this time, the catalyst absorbs the ultraviolet rays irradiated from the discharge line 5 of the ionizing unit A, and the energy becomes high, and the energy is given to the reactants to cause a reaction with strong oxidizing power to decompose sterilization and odor of microorganisms. It works.
상기 섬유필터(18)를 설치한 것은 먼지 등의 집진효율을 더욱 좋게하기 위한 것이다.The fiber filter 18 is provided to further improve dust collecting efficiency such as dust.
상기 작용을 거쳐 광촉매필터(17)를 통과한 먼지 등을 포집부(B)에서 포집되고, 탈취필터(11)를 거쳐 옥외로 청정공기가 배출된다.Dust and the like which have passed through the photocatalyst filter 17 through the above action are collected by the collecting unit B, and clean air is discharged to the outside through the deodorizing filter 11.
걸름망 형태의 금망에 코팅되는 광촉매로써는 자외선과 반응하여 활성화할 수 있는 촉매이면 가능하며, 바람직하게는 강산화력을 갖는 산화티타늄(TiO2)으로써 Anatase상의 결정구조를 갖는 것을 사용함이 좋다.The photocatalyst coated on the sieve type gold network may be a catalyst capable of activating by reacting with ultraviolet rays. Preferably, a titanium oxide having a strong oxidizing power (TiO 2 ) having a crystal structure of Anatase phase may be used.
도 5는 TiO2광촉매반응 메카니즘에 따른 여기(勵起)상태를 나타낸 것으로, 자외선광이 TiO2에 조사되면 Valence Band(原子價電子)에 있는 전자가 Conduction Band(전도띠)로 전이되어 음전기를 지닌 전자와 Valence Band에 양전기를 지닌 정공(正孔)이 생성된다.FIG. 5 shows an excited state according to the TiO 2 photocatalytic reaction mechanism. When ultraviolet light is irradiated onto TiO 2 , electrons in a valence band are transferred to a conduction band to generate a negative electric charge. Positive electrons are generated in the electrons and valence bands.
상기와 같은 전자와 정공은 매우 강한 환원력과 산화력을 갖고 있고, 하기 반응식에 의해 OH radical 이나 슈퍼옥사이드엔아이온(O2 -) 등의 활성산소를 발생한다.The electrons and holes as described above have very strong reducing power and oxidizing power, and generate active oxygen such as OH radical and superoxide enion (O 2 − ) by the following reaction formula.
OH radical은 냄새, 균, 오염물 등을 살균시키는 강한 산화력을 갖고 있는 성질이 있다.OH radical has a strong oxidizing power to sterilize odors, bacteria and contaminants.
즉, e-(Conduction Band에 전이된 전자), h+(Valence Band에 남은 정공)은 TiO2표면에 확산, 이동하여 하기와 같은 반응을 갖는다.That is, e − (electrons transitioned to the conduction band) and h + (holes remaining in the valence band) diffuse and move on the TiO 2 surface to have a reaction as follows.
상기와 같이 확산된 h+는 물 속의 수산화이온과 반응해서 OH를 생성, 물분자와 반응해서 OH과 OH+ion을 생성하여 직접 유기물과 반응 유기물을 산화시킨다.H + diffused as described above reacts with hydroxide ions in water to produce OH, and reacts with water molecules to produce OH and OH + ions to directly oxidize organic and reacted organics.
상기와 같은 e-는 수중산소와 반응해서 O2 -를 생성하고, O2 -는 ①과 같이 물분자와 반응해서 두 개의 OH radical과 두 개의 수산화이온 그리고 산소 한분자를 만들거나 ②와 같이 H+ 와 반응하여 HO를 만들고 결국은 H2O2를 생성하여 이 H2O2가 몇가지 반응경로를 거쳐 OH radical이 생성한다.E as described above - the O 2 reacts with water oxygen-generate and, O 2 - is ① reacts with water molecules as to make those two OH radical and two hydroxide ions and oxygen, one minutes, or H +, such as the ② the reaction creates a HO finally the OH radical to produce an H 2 O 2 is generated by the H 2 O 2 via several reaction routes.
상기 Organic은 냄새, 균, 오염물을 나타낸 것이다.The organic represents odors, bacteria, contaminants.
상기 광촉매 반응의 반응비는 일반적으로 물속보다는 공기중에서 더 크며, 공기중 반응의 양자수율은 물중 반응의 수율보다 약 39배 정도 더 큰 것으로 알려지고 있다.The reaction ratio of the photocatalytic reaction is generally larger in air than in water, and the quantum yield of the air reaction is known to be about 39 times larger than the yield of the reaction in water.
도 6은 본 발명에 따른 TiO2인 광촉매필터를 이용한 트리메틸아민에 대한 탈취효율을 나타낸 것으로, 종래에 비해 탈취효율이 우수함을 알 수 있었다.Figure 6 shows the deodorization efficiency for trimethylamine using a TiO 2 photocatalyst filter according to the present invention, it can be seen that the deodorization efficiency is superior to the conventional.
방전선으로부터 자외선이 방출되는 전리부(A)와 포집부(B)사이에 광촉매필터(17)를 구성함으로써, 자외선광과 TiO2반응에 따른 활성으로 탈취/살균 효과를 갖는 전기집진기를 얻을 수 있다.By constructing the photocatalyst filter 17 between the ionizing part A and the collecting part B from which the ultraviolet rays are emitted from the discharge line, an electrostatic precipitator having a deodorizing / sterilizing effect can be obtained with activity according to the TiO 2 reaction with ultraviolet light. have.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019970039824A KR100249196B1 (en) | 1997-08-21 | 1997-08-21 | Electrical dust collector |
| US09/137,241 US6187271B1 (en) | 1997-08-21 | 1998-08-20 | Electrostatic precipitator |
| AU80840/98A AU745172B2 (en) | 1997-08-21 | 1998-08-20 | Electrostatic precipitator |
| CNB981199682A CN1134305C (en) | 1997-08-21 | 1998-08-21 | Electrostatic precipitator |
| JP23559998A JP2928780B2 (en) | 1997-08-21 | 1998-08-21 | Electric dust collector |
| DE19838107A DE19838107B4 (en) | 1997-08-21 | 1998-08-21 | Electrostatic separator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030011466A (en) * | 2001-08-03 | 2003-02-11 | 주식회사 포스코 | Apparatus for cooling coils |
| KR100507255B1 (en) * | 2001-07-24 | 2005-08-11 | 가부시끼가이샤 도시바 | Refrigerator |
| KR102382968B1 (en) | 2022-02-18 | 2022-04-08 | 노창식 | A device that rapidly cools the heat-treated material |
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| KR100479072B1 (en) * | 2002-04-29 | 2005-03-25 | 엘지전자 주식회사 | Air cleaner |
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| JP3318481B2 (en) * | 1996-02-06 | 2002-08-26 | シャープ株式会社 | Air purifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100507255B1 (en) * | 2001-07-24 | 2005-08-11 | 가부시끼가이샤 도시바 | Refrigerator |
| KR20030011466A (en) * | 2001-08-03 | 2003-02-11 | 주식회사 포스코 | Apparatus for cooling coils |
| KR102382968B1 (en) | 2022-02-18 | 2022-04-08 | 노창식 | A device that rapidly cools the heat-treated material |
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