JP2008303697A - Ceiling structure with air cleaning function - Google Patents

Ceiling structure with air cleaning function Download PDF

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Publication number
JP2008303697A
JP2008303697A JP2007176718A JP2007176718A JP2008303697A JP 2008303697 A JP2008303697 A JP 2008303697A JP 2007176718 A JP2007176718 A JP 2007176718A JP 2007176718 A JP2007176718 A JP 2007176718A JP 2008303697 A JP2008303697 A JP 2008303697A
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Japan
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ceiling
air
voc
room
photocatalyst
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JP2007176718A
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Japanese (ja)
Inventor
Makoto Ishii
誠 石井
Hiroshi Akitsu
裕志 秋津
Shinichi Isaji
信一 伊佐治
Akimitsu Hirama
昭光 平間
Yasuhiro Asakura
靖弘 朝倉
Masato Makino
真人 牧野
Yasushi Hirabayashi
靖 平林
Kumiko Matsumoto
久美子 松本
Masaki Suzuki
昌樹 鈴木
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Hokkaido Prefecture
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Hokkaido Prefecture
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Priority to JP2007176718A priority Critical patent/JP2008303697A/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)
  • Building Environments (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To adsorb and decompose the VOC in air dispersed in a room and return the relatively clean air with its VOC adsorbed and decomposed away to the room again. <P>SOLUTION: The ceiling has a ventilation structure to reduce the VOC concentration in indoor air, by the method that a ventilation fan 3 is used to move and pass the indoor air through the ceiling with a low speed and at a wide area, the ceiling being made of a wooden surface material coated with the paint containing photocatalysts, etc. that adsorb and decompose organic compounds. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は，空気中の有機物を吸着・分解する効果を有する通気性のある材料を天井に活用した空気清浄システムの技術分野に属する。The present invention belongs to the technical field of an air cleaning system in which a breathable material having an effect of adsorbing and decomposing organic substances in the air is used for the ceiling.

天井面を通して通気する手法としては，天井下面を通して暖気を室内に導入する方法が考案されている（例えば特許文献１，特許文献２参照）。しかし，これらの方法は天井面からの給排気を行うために，専用チャンバーやダクトを配する必要がある。そのため，付加的な工事を必要とする。
特開平６−５８６１２号公報（第６頁，図３） 特開平８−１０５１４８号公報（第６頁，図７） As a method of ventilating through the ceiling surface, a method of introducing warm air into the room through the lower surface of the ceiling has been devised (see, for example, Patent Document 1 and Patent Document 2). However, these methods require special chambers and ducts to supply and exhaust air from the ceiling. Therefore, additional construction is required.
JP-A-6-58612 (page 6, FIG. 3) JP-A-8-105148 (6th page, FIG. 7)

また，光触媒等を利用して室内空気に含まれるＶＯＣを分解する方法としては，壁又は天井に光触媒等を含有した塗料を塗布して，その表面を流れる空気を浄化するものがある（例えば非特許文献１参照）。この方法は，成り行きでＶＯＣが光触媒に接触することを期待したものであるため，その効果は高くない。また，照明機器の笠部分に光触媒を含有した塗料を塗布し，その照明の取り付け部分に排気孔を配したものもある（特許文献３参照）。これは，光触媒塗料の塗布面積が小さくかつ紫外線量が少ないことから，効果は期待できない。さらに，天井材に有孔板を配して，天井面裏を排気チャンバーとする空調装置があるが（特許文献４参照），室内空気を排気する目的の空調装置であり，光触媒機能を効果的に発揮して，空気中のＶＯＣを吸着・分解することで除去することを目的とする構造ではない。さらに，有孔板を使用することから，空隙が大きく，排気ムラを生じやすく，流速が速いことから，ＶＯＣの分解効果は低い。
「エアピュアレ カタログ」，上商株式会社・新東北化学工業株式会社，２００５年，２頁 特開２０００−６５３９６（第３頁，図１） 特開平６−２２９５８４（第３頁，図１） In addition, as a method of decomposing VOC contained in room air using a photocatalyst or the like, there is a method in which a coating containing a photocatalyst or the like is applied to a wall or ceiling to purify air flowing on the surface (for example, non-catalyst). Patent Document 1). Since this method is expected to cause the VOC to come into contact with the photocatalyst, the effect is not high. In addition, there is a type in which a coating containing a photocatalyst is applied to a shade portion of a lighting device, and an exhaust hole is provided in a lighting installation portion (see Patent Document 3). This is not expected to be effective because the photocatalyst coating area is small and the amount of ultraviolet rays is small. In addition, there is an air conditioner with a perforated plate on the ceiling material and an exhaust chamber on the back of the ceiling (see Patent Document 4), but it is an air conditioner for exhausting indoor air and has an effective photocatalytic function. However, it is not a structure intended to remove the VOC in the air by adsorption and decomposition. Furthermore, since a perforated plate is used, the voids are large, exhaust unevenness is likely to occur, and the flow rate is fast, so the VOC decomposition effect is low.
“Air Puree Catalog”, Josho Co., Ltd., New Tohoku Chemical Co., Ltd., 2005, p. 2 JP 2000-65396 (3rd page, FIG. 1) JP-A-6-229584 (3rd page, FIG. 1)

光触媒による室内空気中のＶＯＣの分解は，室内の紫外線量が少なく光触媒塗料の塗布面積が少ないことから，あまり効果が見られない。加えて，室内空気が成り行きの対流によって光触媒に接触することから，低濃度でのＶＯＣが光触媒に接触する確率が低くなるため，さらに光触媒によるＶＯＣ分解効果が少なくなっている。The decomposition of VOC in indoor air by the photocatalyst is not very effective because the amount of ultraviolet rays in the room is small and the photocatalyst coating area is small. In addition, since the indoor air comes into contact with the photocatalyst by consequent convection, the probability that the VOC at a low concentration comes into contact with the photocatalyst is lowered, and the VOC decomposition effect by the photocatalyst is further reduced.

また，強制的に集気する光触媒活用空気清浄機では，紫外線ランプによって強い紫外線を照射することが可能であるが，フィルターを通過する流速が速いことや空気清浄機近傍の空気がショートサーキットをおこすことから，処理できない空気を生じる可能性があり，室内のＶＯＣ濃度低減効果は高くない。In addition, a photocatalyst-based air cleaner that forcibly collects air can irradiate strong ultraviolet rays with an ultraviolet lamp, but the flow velocity through the filter is fast and the air near the air cleaner causes a short circuit. For this reason, air that cannot be processed may be generated, and the VOC concentration reduction effect in the room is not high.

請求項１記載の発明は，室内の少ない紫外線を大きな面積を占める天井面で受けることによって，小さい面積に強い紫外線を受けた場合に相当する効果を得ることができる。The invention according to claim 1 can obtain an effect equivalent to the case where strong ultraviolet rays are received in a small area by receiving a small amount of ultraviolet rays in the room on the ceiling surface occupying a large area.

また，天井の広い面から分散して空気を通気することによって，天井面材を通過する際の流速が１ｃｍ／秒程度に遅くなる。光触媒等を含有した塗料を塗布した材料表面を通過する空気の流速が遅い方が，ＶＯＣの除去率が高くなる（非特許文献２参照）ことから，天井面材を通過する際に，ＶＯＣの分解効率を高くすることができる。さらに，通気抵抗を大きくすることによって，天井裏全体の圧力差が均一な状態に近くなることから，天井面全体からのムラの少ない通気を行うことができる。
「愛知県産業技術研究所研究報告第３号」，愛知県産業技術研究所，２００４年，１３頁 In addition, by dispersing air from a wide surface of the ceiling and ventilating air, the flow velocity when passing through the ceiling surface material is reduced to about 1 cm / second. The slower the flow rate of air passing through the surface of the material coated with a coating containing a photocatalyst or the like, the higher the VOC removal rate (see Non-Patent Document 2). Decomposition efficiency can be increased. Furthermore, by increasing the airflow resistance, the pressure difference across the entire ceiling becomes close to a uniform state, so that air can be vented with less unevenness from the entire ceiling surface.
"Aichi Prefectural Industrial Technology Research Institute Research Report No.3", Aichi Prefectural Industrial Technology Research Institute, 2004, p.13

本発明によって，効率的に空気を清浄化することが可能となり，室内空気を快適な状態に保つことができる。According to the present invention, it is possible to efficiently clean the air and keep the indoor air in a comfortable state.

上記の本発明について，図面を用いて下記にさらに詳しい説明を行う。図１は，天井面及び天井裏空間の構造及び室内空気の移動経路を示した断面図である。図２は，天井裏の空気移動を示した平面図である。図中の１は通気性を有する面材料で構成される天井構造材，２は通気性を有しない面材料で構成される天井裏表面仕上げ材，３は通風ファン，４は通気性を有しない隔壁，５は通風ファン３を稼働することによって負圧を生じた天井裏空間，６は通風ファンを稼働することによって正圧を生じた天井裏空間，７は紫外線光源，８は採光窓を示している。The above-mentioned present invention will be described in more detail below with reference to the drawings. FIG. 1 is a cross-sectional view showing the structure of the ceiling surface and the space behind the ceiling and the movement path of room air. FIG. 2 is a plan view showing air movement behind the ceiling. In the figure, 1 is a ceiling structural member made of a surface material having air permeability, 2 is a ceiling surface finishing material made of a surface material having no air permeability, 3 is a ventilation fan, and 4 is not air permeable. Bulkhead, 5 is a ceiling space where negative pressure is generated by operating the ventilation fan 3, 6 is a ceiling space where positive pressure is generated by operating the ventilation fan, 7 is an ultraviolet light source, and 8 is a daylighting window. ing.

１は，木毛にセメント，石膏，珪藻土，漆喰などの無機質材料を混合して製造した，約２０ｍ３／ｍ２／ｐａ／時間の通気性を有する面材料である。Reference numeral 1 denotes a surface material having a breathability of about 20 m 3 / m 2 / pa / hour, which is produced by mixing wooden materials with inorganic materials such as cement, gypsum, diatomaceous earth, and plaster.

対象室の天井裏に設置された３を稼働することで，５が負圧となり，室内の空気が１から流入する。また，正圧となった６から１を通して室内に流入する。By operating 3 installed behind the ceiling of the target room, 5 becomes negative pressure and indoor air flows from 1. Moreover, it flows into the room through 6 to 1 which became positive pressure.

１には光触媒含有塗料などの有機物分解機能を有した塗料を塗布する。また，天井裏にＵＶＬＥＤやＵＶ蛍光灯などの７，また８を用いて外光を導入することができる。In 1, a paint having a function of decomposing organic matter such as a photocatalyst containing paint is applied. Moreover, external light can be introduced into the back of the ceiling using 7 or 8 such as UVLED or UV fluorescent lamp.

室内の空気は，１の表面に接触しながら５に流入する。その際，１の表面に塗布された有機物分解機能を有した塗料に接触することにより，空気中の揮発性有機化合物が酸化還元反応により分解され，より分子量の小さい化合物に分解される。また，５から３を通して６に異動した空気は，１の表面に接触しながら室内に流入する。その際，再度１の表面に塗布された有機物分解機能を有した塗料に接触するため，空気中の揮発性有機化合物の分解効率が向上する。The indoor air flows into 5 while contacting the surface of 1. At that time, the volatile organic compound in the air is decomposed by the oxidation-reduction reaction by being brought into contact with the paint having the organic substance decomposing function applied to the surface of 1, thereby decomposing it into a compound having a smaller molecular weight. Further, the air transferred from 6 to 6 through 5 flows into the room while contacting the surface of 1. At that time, since it comes into contact with the paint having the organic substance decomposing function applied to the surface of 1 again, the decomposition efficiency of volatile organic compounds in the air is improved.

１は，木材に無機質材料を付着させることによって，有機物である木材が有機物分解機能を有する塗料によって分解されることを防止し，かつ面密度を変えることによって適切な通気量を調整することが可能な材料である。1. By attaching an inorganic material to the wood, it is possible to prevent the wood, which is an organic matter, from being decomposed by a paint having an organic matter decomposing function, and to adjust an appropriate air flow rate by changing the surface density. Material.

天井面および天井裏空間の構造及び室内空気の移動経路を示した断面図である。It is sectional drawing which showed the structure of the ceiling surface and the ceiling back space, and the movement path | route of indoor air. 天井裏空間の空気移動経路を示した平面図である。It is the top view which showed the air movement path | route of ceiling back space.

符号の説明Explanation of symbols

１ 通気性を有する面材料で構成される天井構造材
２ 通気性を有しない面材料で構成される天井裏仕上げ材
３ 通風ファン
４ 通気性を有しない隔壁
５ 負圧を生じた天井裏空間
６ 正圧を生じた天井裏空間
７ 紫外線光源
８ 採光窓DESCRIPTION OF SYMBOLS 1 Ceiling structure material comprised of surface material with air permeability 2 Ceiling back finishing material comprised of surface material without air permeability 3 Ventilation fan 4 Partition wall without air permeability 5 Ceiling space 6 with negative pressure The space behind the ceiling that generated positive pressure 7 UV light source 8 Daylighting window

Claims (3)

天井の一部又は全面に適度な通気性を有する材料を配し，天井の一部から室内空気を天井裏に誘導し，別の一部から室内に戻すことを特徴とした空気循環システム。An air circulation system characterized by arranging moderately breathable material on part or the entire surface of the ceiling, guiding indoor air from a part of the ceiling to the back of the ceiling, and returning it to the room from another part. 通気抵抗を大きくすることで，天井裏全体の圧力差を均一にしてムラの少ない通気をすることを特徴とした請求項１記載の空気循環システム。2. The air circulation system according to claim 1, wherein the ventilation resistance is made uniform by making the pressure difference across the entire ceiling uniform and making the ventilation less uniform. 通気を有する材料の表面に空気中の有機物を分解する成分を含有した塗料を塗布した請求項１，２記載の空気循環システム。The air circulation system according to claim 1 or 2, wherein a coating material containing a component that decomposes organic substances in the air is applied to the surface of the material having ventilation.
JP2007176718A 2007-06-08 2007-06-08 Ceiling structure with air cleaning function Pending JP2008303697A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200458896Y1 (en) 2011-02-01 2012-03-16 (주)뉴라이트전자 A ceiling light structure
JP2016081660A (en) * 2014-10-15 2016-05-16 シャープ株式会社 Daylighting system and ceiling structure
CN108870620A (en) * 2017-05-15 2018-11-23 北新集团建材股份有限公司 A kind of closed system of ventilation
JP2019533099A (en) * 2016-08-24 2019-11-14 シェレル ジャン−マルクＳＣＨＥＲＲＥＲ Ｊｅａｎ−Ｍａｒｃ Hanger profiles that allow the passage of air and ceiling assemblies including such profiles
JP2020159618A (en) * 2019-03-26 2020-10-01 旭化成ホームズ株式会社 Air circulation system and building

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200458896Y1 (en) 2011-02-01 2012-03-16 (주)뉴라이트전자 A ceiling light structure
JP2016081660A (en) * 2014-10-15 2016-05-16 シャープ株式会社 Daylighting system and ceiling structure
JP2019533099A (en) * 2016-08-24 2019-11-14 シェレル ジャン−マルクＳＣＨＥＲＲＥＲ Ｊｅａｎ−Ｍａｒｃ Hanger profiles that allow the passage of air and ceiling assemblies including such profiles
JP7087244B2 (en) 2016-08-24 2022-06-21 シェレル ジャン－マルク Hanger variants that allow the passage of air and ceiling assemblies containing such variants
CN108870620A (en) * 2017-05-15 2018-11-23 北新集团建材股份有限公司 A kind of closed system of ventilation
JP2020159618A (en) * 2019-03-26 2020-10-01 旭化成ホームズ株式会社 Air circulation system and building
JP7282559B2 (en) 2019-03-26 2023-05-29 旭化成ホームズ株式会社 Air circulation system, building, and method for supporting photocatalyst

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