JPH0938189A - Fan having air cleaning function - Google Patents
Fan having air cleaning functionInfo
- Publication number
- JPH0938189A JPH0938189A JP7192829A JP19282995A JPH0938189A JP H0938189 A JPH0938189 A JP H0938189A JP 7192829 A JP7192829 A JP 7192829A JP 19282995 A JP19282995 A JP 19282995A JP H0938189 A JPH0938189 A JP H0938189A
- Authority
- JP
- Japan
- Prior art keywords
- fan
- titanium dioxide
- light emitting
- emitting diode
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004140 cleaning Methods 0.000 title abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 105
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 52
- 239000010409 thin film Substances 0.000 claims abstract description 45
- 239000004065 semiconductor Substances 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 7
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 4
- 238000004887 air purification Methods 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 abstract 1
- 239000011941 photocatalyst Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 239000000084 colloidal system Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Catalysts (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は二酸化チタンの薄膜
からなる光触媒反応を利用した空気浄化機能をもつファ
ンに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan having a function of purifying air utilizing a photocatalytic reaction composed of a thin film of titanium dioxide.
【０００２】[0002]
【従来の技術】近年、二酸化チタンＴｉＯ2 に代表され
る光半導体の微粒子による光触媒作用、特にその強い酸
化触媒作用に高い注目が集められている。即ち、二酸化
チタン等の光半導性を有する粒子状物質をそのバンドキ
ャップエネルギ以上の光（二酸化チタンの場合は４００
ｎｍ以下の光、即ち、紫外線）で照射すると、価電子帯
の電子が光励起されて伝導帯に移り、伝導帯には自由電
子が生成すると共に、価電子帯には正の電荷を帯びた粒
子（正孔）が生成する。これらの正孔と電子とは半導体
粒子内部を運動し、時間の経過と共に再結合して消滅す
る。しかしその粒子表面に空気または水、或いはそれら
の正孔や電子よりもエネルギの低い空順位を有する化合
物やイオンが存在すると、その粒子表面を通してそれら
の正孔と電子が化合物やイオンに移動し、その結果、正
孔は粒子表面に接触する化合物やイオンを直接酸化し、
或いは活性酸素の１つである水酸基ラジカルを生成す
る。 2. Description of the Related Art In recent years, much attention has been paid to the photocatalytic action of fine particles of an optical semiconductor represented by titanium dioxide TiO 2 , and particularly to its strong oxidation catalytic action. That is, a particulate matter having a light semiconducting property such as titanium dioxide is converted into light having a band cap energy equal to or more than that (in the case of titanium dioxide, it is 400
When irradiated with light having a wavelength of nm or less, that is, ultraviolet rays, electrons in the valence band are photoexcited and move to the conduction band, free electrons are generated in the conduction band, and particles having a positive charge in the valence band. (Hole) is generated. These holes and electrons move inside the semiconductor particles and recombine with time to disappear. However, if air or water, or a compound or ion having a lower vacancy than the holes or electrons exists on the particle surface, those holes and electrons move to the compound or ion through the particle surface, As a result, the holes directly oxidize compounds and ions that come into contact with the particle surface,
Alternatively, a hydroxyl radical, which is one of active oxygen, is generated.
【０００３】また、電子による還元反応は主に酸素の還
元であり、電子が付加された酸化性のある酸素種が生成
される。こうして、光半導体微粒子は光が照射されるこ
とによって酸化性の活性表面を形成し、有機化合物の分
解等に触媒として作用する（「季刊 化学総説 『光が
関わる触媒化学』Ｎｏ．２３，１９９４）。このような
光半導体微粒子による酸化触媒作用は、光半導体の中で
も二酸化チタンが特に高い。また、二酸化チタンは安定
性や安全性にも優れている。そして、この二酸化チタン
の微粉末を薄膜として基体表面に担持して光触媒を形成
し、紫外線照射時のその高い酸化力を有機化合物等の分
解に利用した種々の応用が既に知られている。Further, the reduction reaction by electrons is mainly reduction of oxygen, and oxidative oxygen species to which electrons are added are generated. In this way, the photo-semiconductor fine particles form an oxidative active surface when irradiated with light, and act as a catalyst for decomposition of organic compounds, etc. Among the optical semiconductors, titanium dioxide is particularly high in the oxidation catalytic action by such optical semiconductor fine particles, and titanium dioxide is also excellent in stability and safety. Various applications have already been known in which a photocatalyst is formed by supporting it on the surface of a substrate, and its high oxidizing power during irradiation of ultraviolet rays is utilized for decomposing organic compounds and the like.
【０００４】例えば、二酸化チタンの薄膜からなる光触
媒をコーティングした中空のガラスビーズは海上に流出
した原油の分解剤として知られている。すなわち、ガラ
スビーズ表面に付着した原油は太陽光中の紫外線によっ
て活性化された二酸化チタンの強い酸化触媒作用によっ
て分解される。また最近では、室内空気の脱臭または消
臭、殺菌（抗菌）、タバコのヤニや油膜等の汚れの分解
にもその応用が試みられ、自然光または蛍光灯の光に含
まれる紫外線を利用してその光触媒を活性化させ、それ
の酸触媒反応によって接触するメルカブタン等の臭気化
合物、或いはタバコのヤニ等の有機物を分解し、また
は、細菌等の微生物を死滅させ、またはその繁殖を抑え
るものである。For example, hollow glass beads coated with a photocatalyst consisting of a thin film of titanium dioxide are known as a decomposing agent for crude oil that has flowed out to the sea. That is, the crude oil attached to the surface of the glass beads is decomposed by the strong oxidation catalytic action of titanium dioxide activated by ultraviolet rays in sunlight. Recently, its application has been tried for deodorization or deodorization of indoor air, sterilization (antibacterial), and decomposition of stains such as tars and oil slicks of cigarettes, using ultraviolet light contained in natural light or fluorescent light. It activates a photocatalyst and decomposes an odorous compound such as mercaptan or an organic substance such as tobacco tar that is brought into contact by its acid-catalyzed reaction, or kills microorganisms such as bacteria, or suppresses the growth thereof.
【０００５】[0005]
【発明が解決しようとする課題】二酸化チタンの薄膜に
よる空気の浄化は紫外線を受ける二酸化チタンの薄膜に
空気が接触する必要がある。このため多量の空気を浄化
するには効率が低いという問題がある。また、従来は、
二酸化チタン（ＴｉＯ2 ）の薄膜を活性化させる紫外線
源として、太陽光や蛍光灯に頼っていた。このため、太
陽で照射されていない所では利用できないとか、大きな
蛍光灯を必要とした。Purification of air by a thin film of titanium dioxide requires that the thin film of titanium dioxide, which receives ultraviolet rays, contact the air. Therefore, there is a problem that efficiency is low in purifying a large amount of air. Conventionally,
It relied on sunlight and fluorescent lamps as an ultraviolet light source to activate a titanium dioxide (TiO 2 ) thin film. For this reason, it cannot be used in places not illuminated by the sun, and a large fluorescent lamp was required.
【０００６】本発明はかかる不都合を解消するもので、
手軽に利用できかつ効率的に空気を浄化できる空気浄化
機能をもつファンを提供するものである。The present invention eliminates such inconveniences.
(EN) A fan having an air purifying function that can be easily used and can efficiently purify air.
【０００７】[0007]
【課題を解決するための手段】本発明の空気浄化機能を
もつファンは、回転軸部と、該回転軸部に保持され周方
向に等間隔で配列された複数の翼と、該翼の表面に設け
られた二酸化チタンの薄膜と、を具備することを特徴と
する。すなわち、本発明の空気浄化機能をもつファン
は、空気と最も良く接触する翼の表面に光触媒である二
酸化チタンの薄膜が形成されている。このためより多量
の空気を効率的に浄化できる。A fan having an air purifying function according to the present invention comprises a rotating shaft portion, a plurality of blades held by the rotating shaft portion and arranged at equal intervals in the circumferential direction, and a surface of the blade. And a thin film of titanium dioxide provided on the. That is, in the fan having an air purifying function of the present invention, a thin film of titanium dioxide, which is a photocatalyst, is formed on the surface of the blade that comes into best contact with air. Therefore, a larger amount of air can be efficiently purified.
【０００８】本発明の空気浄化機能をもつファンは翼の
表面に二酸化チタンの薄膜をもつことに第一の特色があ
る。そして本発明の空気浄化機能をもつファンは翼の表
面に二酸化チタンの薄膜をもつこととこの二酸化チタン
の薄膜に波長３６０〜４００ｎｍの紫外線を放射する発
光ダイオ−ドをもつことに第二の特色をもつ。そして、
ファンそのものは従来のファンと同一である。すなわ
ち、本発明の空気浄化機能をもつファンは従来のファン
と同様に回転軸部とこの回転軸部に固定され周方向に等
間隔に配列された翼をもつ。また、本発明の空気浄化機
能をもつファンは、翼の先端の回転軌跡の遠心側を囲む
筒状の案内部を持つものとすることができる。The fan having the air purifying function of the present invention has the first feature that it has a thin film of titanium dioxide on the surface of the blade. The second feature of the fan having an air purifying function of the present invention is that it has a thin film of titanium dioxide on the surface of the blade and that the thin film of titanium dioxide has a light emitting diode that emits ultraviolet rays having a wavelength of 360 to 400 nm. With. And
The fan itself is the same as the conventional fan. That is, the fan having the air purifying function of the present invention has a rotating shaft portion and blades fixed to the rotating shaft portion and arranged at equal intervals in the circumferential direction, like the conventional fan. Further, the fan having the air purifying function of the present invention may have a tubular guide portion that surrounds the centrifugal side of the rotation trajectory of the tip of the blade.
【０００９】本発明の空気浄化機能をもつファンは、紫
外線源が他に存在する場合には、紫外線を照射する発光
ダイオードを必要としない。しかし他に紫外線源がない
場合には発光ダイオードを必要とする。この発光ダイオ
ードはファンと一体であるのが好ましく、また、効率的
に翼の二酸化チタンの薄膜を照射する必要がある。かか
る見地から、発光ダイオードは、翼の先端の回転軌跡の
遠心側を囲む筒状の案内部とか、回転軸部に設けるのが
好ましい。さらには、最も効率的に紫外線を照射できる
位置に専有のブラケットを設け、このブラケツトに発光
ダイオードを固定することもできる。The fan having an air purifying function of the present invention does not require a light emitting diode for irradiating ultraviolet rays when another ultraviolet ray source is present. However, when there is no other UV source, a light emitting diode is required. This light emitting diode is preferably integral with the fan, and it is necessary to efficiently illuminate the thin film of titanium dioxide on the blade. From this point of view, it is preferable that the light emitting diode is provided in a cylindrical guide portion surrounding the centrifugal side of the rotation locus of the tip of the blade, or in the rotation shaft portion. Further, it is possible to provide a dedicated bracket at a position where the ultraviolet rays can be emitted most efficiently and fix the light emitting diode to this bracket.
【００１０】また、翼が紫外線を透過できる透明な材料
で形成されている場合、翼自体を導光体として利用し、
翼に発光ダイオードを埋設することもできる。二酸化チ
タンの薄膜は表面に設ける必要がある。翼の全表面を二
酸化チタンの薄膜で覆うことも、紫外線の照射を受ける
他の部品の表面を二酸化チタンの薄膜で覆うこともでき
る。When the wing is made of a transparent material capable of transmitting ultraviolet rays, the wing itself is used as a light guide,
Light emitting diodes can be embedded in the wings. A thin film of titanium dioxide must be provided on the surface. The entire surface of the blade can be covered with a thin film of titanium dioxide, or the surfaces of other parts exposed to ultraviolet light can be covered with a thin film of titanium dioxide.
【００１１】この二酸化チタンの薄膜は光触媒となるも
のである。この二酸化チタンの薄膜を形成する二酸化チ
タンの粒子径は、十分に小さいほど「量子サイズ効果」
等によって光触媒作用が高い。そのため、その薄膜は、
二酸化チタンのコロイドを基体表面に塗布し焼成する等
の方法によって、一般に０．３μｍ以下、好ましくは
０．２μｍ以下の膜厚の透明な薄膜として、またはその
ような薄膜を多層化した薄膜として形成するのが好まし
い。また、物理的蒸着法（ＰＶＤ）や化学的蒸着法（Ｃ
ＶＤ）等の方法によって形成することもできる。This thin film of titanium dioxide serves as a photocatalyst. The particle size of titanium dioxide that forms this titanium dioxide thin film is "quantum size effect" if it is small enough.
The photocatalytic action is high due to such factors. Therefore, the thin film is
Formed as a transparent thin film having a thickness of generally 0.3 μm or less, preferably 0.2 μm or less, or as a thin film in which such a thin film is multilayered, by a method such as coating a titanium dioxide colloid on the surface of a substrate and baking it. Preferably. In addition, physical vapor deposition (PVD) and chemical vapor deposition (C
It can also be formed by a method such as VD).
【００１２】発光ダイオ−ドは、紫外線を放出できるも
ので、具体的にはｐｎ接合された窒化ガリウム（Ｇａ
Ｎ）系光半導体の結晶体で構成することができる。この
ｐｎ接合された窒化ガリウム（ＧａＮ）系光半導体の結
晶体は、波長３６０〜４００ｎｍの光（電磁波）、即
ち、紫外線を放射する。本発明の空気浄化機能をもつフ
ァンに組み込まれた発光ダイオードは、ファンの駆動と
ともに発光ダイオードにも通電され、発光ダイオードか
ら紫外線が照射されるようにするのが好ましい。The light emitting diode is capable of emitting ultraviolet rays, and specifically, is a pn-junction gallium nitride (Ga).
It can be composed of a crystal body of N) type optical semiconductor. This pn-junction gallium nitride (GaN) optical semiconductor crystal emits light (electromagnetic wave) having a wavelength of 360 to 400 nm, that is, ultraviolet rays. It is preferable that the light emitting diode incorporated in the fan having the air purifying function of the present invention is energized to the light emitting diode as the fan is driven so that the light emitting diode emits ultraviolet rays.
【００１３】また、本発明の空気浄化機能をもつファン
は新鮮な空気の必要とする送風の必要な装置、例えばエ
アコン装置の送風機、室内への空気導入ファン、扇風機
等に使用できる。Further, the fan having the air purifying function of the present invention can be used for a device that needs fresh air, such as a blower for an air conditioner, a fan for introducing air into a room, and a fan.
【００１４】[0014]
【作用】本発明の空気浄化機能をもつファンは、空気と
最も良く接触する翼の表面に二酸化チタンの薄膜が形成
されている。このため二酸化チタンの薄膜の単位面積当
たりの空気浄化能力は極めて高くなる。特にこの二酸化
チタンの薄膜に紫外線を照射する発光ダイオードを設け
た場合、色々な装置にこのファンを組み込むことが可能
となる。また、発光ダイオードが非常に小さな発光素子
であるため、ファンを特に大きくする必要もなく、従来
のファンと同じ大きさのものとすることができるIn the fan having an air purifying function of the present invention, a thin film of titanium dioxide is formed on the surface of the blade that comes into contact with the air most. Therefore, the air purification capacity per unit area of the titanium dioxide thin film becomes extremely high. In particular, when the thin film of titanium dioxide is provided with a light emitting diode for irradiating ultraviolet rays, the fan can be incorporated into various devices. Further, since the light emitting diode is a very small light emitting element, it is not necessary to make the fan particularly large, and the size of the fan can be the same as that of the conventional fan.
【００１５】[0015]
【実施例】以下、本発明の実施例を説明する。 （第一実施例）図１は本発明の第一実施例の空気浄化機
能をもつファンを示す。このファンはシロッコファンと
呼ばれているタイプのファンで、図１は翼の一部が省略
されている。このファンは全体が一体的に射出成形で作
られているもので、回転軸部１とリング状の側面板２と
この回転軸部１と側面板２とを結ぶ支柱３と側面板２よ
り軸方向に伸び、互いに所定間隔を隔てて設けられた複
数の翼４とからなる。そして翼４の全面に二酸化チタン
の薄膜５が形成されている。この薄膜５は二酸化チタン
のコロイドを顔料として含む無機塗料を塗布して形成し
たものである。なお、この二酸化チタンのコロイドは、
通常の顔料とは異なり、二酸化チタン表面に不活性化皮
膜を持たず、直接二酸化チタン表面が表出している。Embodiments of the present invention will be described below. (First Embodiment) FIG. 1 shows a fan having an air purifying function according to a first embodiment of the present invention. This fan is a type of fan called a sirocco fan, and a part of the blade is omitted in FIG. This fan is entirely made by injection molding, and includes a rotary shaft portion 1, a ring-shaped side plate 2, a support rod 3 connecting the rotary shaft portion 1 and the side plate 2, and a shaft from the side plate 2. And a plurality of blades 4 that extend in a predetermined direction and are spaced apart from each other by a predetermined distance. Then, a thin film 5 of titanium dioxide is formed on the entire surface of the blade 4. This thin film 5 is formed by applying an inorganic coating material containing a colloid of titanium dioxide as a pigment. In addition, this titanium dioxide colloid is
Unlike ordinary pigments, the titanium dioxide surface has no passivation film, and the titanium dioxide surface is directly exposed.
【００１６】このファンはシロッコファンと呼ばれるも
ので矢印に示す反時計回転方向に回転することにより空
気が軸方向から遠心方向に送られる。本実施例の空気浄
化機能をもつファンは、翼４に照射される紫外線を受
け、翼４の全面に形成された二酸化チタンの薄膜５が活
性化され、酸化性の活性表面が形成される。そしてこの
活性表面により翼４に当たる空気を効率的に浄化する。
特に翼４には、回転に伴い空気が中心部から遠心方向に
駆動され、翼４の表面にそって流れ、多量の空気が翼４
の表面に形成された二酸化チタンの薄膜５に当接する。
そのため、多量の空気を効率的に浄化できる。 （第二実施例）図２は本発明の第二実施例の空気浄化機
能をもつファンを示す。このファンは通常のプロペラ式
のファンで、回転軸部１１と、この回転軸部１１の外周
面側より遠心方向に伸び互いに所定間隔を隔てて設けら
れた複数の翼４１と、これら翼４１の全面に形成された
二酸化チタンの薄膜５１と、これらの翼４１を囲む円筒
状の案内部６と、この案内部６の内周面に等間隔で設け
られた複数の発光ダイオード７とからなる。二酸化チタ
ンの薄膜５１は二酸化チタンのコロイドを顔料として含
む無機塗料を塗布して形成したものである。This fan is called a sirocco fan, and air is sent from the axial direction to the centrifugal direction by rotating in the counterclockwise direction indicated by the arrow. The fan having the air purifying function of the present embodiment receives the ultraviolet rays applied to the blade 4 to activate the titanium dioxide thin film 5 formed on the entire surface of the blade 4 to form an oxidative active surface. Then, the air hitting the blade 4 is efficiently purified by this active surface.
In particular, as the blade 4 rotates, air is driven in the centrifugal direction from the central portion, flows along the surface of the blade 4, and a large amount of air is generated.
It comes into contact with the titanium dioxide thin film 5 formed on the surface of.
Therefore, a large amount of air can be efficiently purified. (Second Embodiment) FIG. 2 shows a fan having an air purifying function according to a second embodiment of the present invention. This fan is an ordinary propeller type fan, and includes a rotating shaft portion 11, a plurality of blades 41 extending in the centrifugal direction from the outer peripheral surface side of the rotating shaft portion 11 and provided at predetermined intervals, and these blades 41. It is composed of a titanium dioxide thin film 51 formed on the entire surface, a cylindrical guide portion 6 surrounding these wings 41, and a plurality of light emitting diodes 7 provided on the inner peripheral surface of the guide portion 6 at equal intervals. The titanium dioxide thin film 51 is formed by applying an inorganic paint containing a colloid of titanium dioxide as a pigment.
【００１７】発光ダイオ−ド７はｐｎ接合された窒化ガ
リウム（ＧａＮ）系光半導体の結晶体からなる光を放射
するチップと、このチップを封止すると共に放射された
光に指向性を与えるモ−ルドレンズとを主要部として備
える小さな発光素子である。この発光ダイオ−ド７は、
波長３６０〜４００ｎｍの光（電磁波）、即ち、紫外線
を放射する。The light-emitting diode 7 is a pn-junction gallium nitride (GaN) -based optical semiconductor crystal emitting chip, which emits light, and a module which seals the chip and gives directivity to the emitted light. -A small light-emitting element including a lens as a main part. This light emitting diode 7 is
It emits light (electromagnetic waves) having a wavelength of 360 to 400 nm, that is, ultraviolet rays.
【００１８】なお、発光ダイオ−ド７は、波長３６０〜
４００ｎｍのスペクトル範囲の光のみ放射するものであ
ることが、発光効率及び電力消費の点で好ましい。しか
し、実際には、発光ダイオ−ドの放射する光は、半導体
レーザの場合とは異なり、一般に少なくとも５０ｎｍの
スペクトル範囲を有するため、波長３６０〜４００ｎｍ
のみの光を放射する発光ダイオ−ドを得ることは困難で
ある。そのため、ここで使用する発光ダイオ−ド３とし
ては、波長３６０〜４００ｎｍの紫外線を十分に含む光
（電磁波）を放射するものであれば、どのような発光ダ
イオ−ドでも使用することができる。The light emitting diode 7 has a wavelength of 360 to 360.
It is preferable to emit only light in the spectral range of 400 nm in terms of luminous efficiency and power consumption. However, in practice, the light emitted by the light emitting diode generally has a spectral range of at least 50 nm, which is different from the case of the semiconductor laser.
It is difficult to obtain a light emitting diode that emits only light. Therefore, as the light emitting diode 3 used here, any light emitting diode can be used as long as it emits light (electromagnetic wave) sufficiently containing ultraviolet rays having a wavelength of 360 to 400 nm.
【００１９】しかし、この発光ダイオ−ド７としては、
好ましくは、人体に有害な紫外線、即ち、３２０ｎｍ以
下の波長の遠紫外線（ＵＶ−Ｂ、ＵＶ−Ｃ）を放射しな
いものが好ましい。そして、このような発光ダイオ−ド
３によれば、人体に無害な空気浄化機能をもつファンを
形成することができ、日常生活における用途にも安全に
使用することができる。However, as the light emitting diode 7,
Preferably, it does not emit ultraviolet rays harmful to the human body, that is, far ultraviolet rays (UV-B, UV-C) having a wavelength of 320 nm or less. Further, according to such a light emitting diode 3, a fan having an air purifying function harmless to a human body can be formed and can be safely used for daily use.
【００２０】これに対して、可視光である４００ｎｍ以
上の波長の光は人体に無害であるため、このような可視
光を含む光を放射する発光ダイオ−ドは、何等問題なく
使用することができる。また、そのような発光ダイオ−
ド７を使用することによって、その発光ダイオ−ド７が
作動していることを容易に確認することができ、更に、
その可視光が明彩色である場合には照明や表示としての
効果を得ることができる。ただし、４００ｎｍ以下の波
長の光（紫外線）であっても、３８０ｎｍ程度までの光
はぼんやりとした背景（暗い紫色）を呈するため、発光
ダイオ−ド７が４００ｎｍ以下の波長の光のみ放射する
場合でも、その光は完全なブラック光ではなく、一般に
視認可能なものである。On the other hand, since visible light having a wavelength of 400 nm or more is harmless to the human body, such a light emitting diode that emits light containing visible light can be used without any problem. it can. Also, such a light emitting diode
By using the diode 7, it is possible to easily confirm that the light emitting diode 7 is operating.
When the visible light has a bright color, it is possible to obtain an effect as illumination or display. However, when the light emitting diode 7 emits only light having a wavelength of 400 nm or less, even light having a wavelength of 400 nm or less (ultraviolet light) has a vague background (dark purple) up to about 380 nm. However, the light is not completely black light and is generally visible.
【００２１】本実施例の空気浄化機能をもつファンは、
駆動モータの駆動軸に固定されて使用される。そして駆
動モータの駆動とともに発光ダイオード７にも通電さ
れ、発光ダイオードから紫外線が放出される。モータの
回転とともに翼４１が回転し、翼４１に押されて空気が
軸方向に駆動される。一方、発光ダイオード７から出た
紫外線は翼４１の表面に形成された二酸化チタンの薄膜
を照射し、表面を活性化する。そして光触媒として機能
し、空気中に含まれる臭い成分とか、煙草の煙成分を効
果的に分解し、空気を浄化する。特に翼４１の表面には
連続して新しい空気が接触するため、単位時間に多量の
空気が浄化できる。The fan having the air purifying function of this embodiment is
It is used by being fixed to the drive shaft of the drive motor. When the drive motor is driven, the light emitting diode 7 is also energized, and the light emitting diode emits ultraviolet rays. The blades 41 rotate as the motor rotates, and are pushed by the blades 41 to drive air in the axial direction. On the other hand, the ultraviolet rays emitted from the light emitting diode 7 irradiate the titanium dioxide thin film formed on the surface of the blade 41 to activate the surface. It functions as a photocatalyst and effectively decomposes odorous components contained in the air and smoke components of cigarettes to purify the air. In particular, since fresh air continuously contacts the surface of the blade 41, a large amount of air can be purified in a unit time.
【００２２】また、本実施例の空気浄化機能をもつファ
ンは、紫外線光原と光触媒との両者を備えているため、
そのまま各種の装置の送風機として組み込むことができ
る。 （第三実施例）図３は本発明の第三実施例の空気浄化機
能をもつファンの断面を示す。このファンは通常のプロ
ペラ式のファンで、回転軸部１２と、この回転軸部１２
の外周面側より遠心方向に伸び互いに所定間隔を隔てて
設けられた複数の翼４２と、これら翼４２の全面に形成
された二酸化チタンの薄膜５２と、回転軸部１２とこれ
らの翼４１との境界部分にそれぞれ埋設した発光ダイオ
ード７１とからなる。回転軸部１２および複数の翼４２
は紫外線を通す透明樹脂で一体的に射出成形されてい
る。発光ダイオード７１はその後それぞれの翼４２に隣
接した回転軸部１２に埋設したものである。Further, since the fan having the air purifying function of this embodiment has both the ultraviolet light source and the photocatalyst,
It can be incorporated as it is as a blower for various devices. (Third Embodiment) FIG. 3 shows a cross section of a fan having an air purifying function according to a third embodiment of the present invention. This fan is a normal propeller-type fan, and includes a rotating shaft portion 12 and the rotating shaft portion 12.
A plurality of blades 42 extending in the centrifugal direction from the outer peripheral surface side and spaced apart from each other by a predetermined distance, a titanium dioxide thin film 52 formed on the entire surfaces of these blades 42, the rotary shaft portion 12, and these blades 41. And a light emitting diode 71 embedded in the boundary portion of each. Rotating shaft portion 12 and a plurality of blades 42
Is a transparent resin that is transparent to ultraviolet rays and is integrally injection molded. The light emitting diode 71 is then embedded in the rotary shaft portion 12 adjacent to each blade 42.
【００２３】二酸化チタンの薄膜５２はＰＶＤで蒸着し
たもので、半透明の薄い黄色をしている。本実施例の空
気浄化機能をもつファンは、翼４２を導光体として使用
している。すなわち、発光ダイオード７１により照射さ
れた紫外線は翼４２の内部を通りその表面に送られる。
そして翼４２の表面で二酸化チタンの薄膜５２に照射さ
れ、二酸化チタンの薄膜５２を活性化する。翼４２は風
を送るためその表面には絶えず新しい空気が多量に接触
する。そして翼４２の二酸化チタンの薄膜５２と接触
し、空気中に含まれる臭い成分、煙草の煙成分等の物質
が分解除去され、空気が浄化される。The titanium dioxide thin film 52 is vapor-deposited by PVD and has a semi-transparent pale yellow color. The fan having the air purifying function of this embodiment uses the blade 42 as a light guide. That is, the ultraviolet rays emitted by the light emitting diode 71 pass through the inside of the blade 42 and are sent to the surface thereof.
Then, the thin film 52 of titanium dioxide is irradiated on the surface of the blade 42 to activate the thin film 52 of titanium dioxide. The wing 42 sends wind to its surface, which constantly comes into contact with a large amount of fresh air. Then, in contact with the thin film 52 of titanium dioxide on the blade 42, substances such as odorous components and cigarette smoke components contained in the air are decomposed and removed, and the air is purified.
【００２４】[0024]
【発明の効果】本発明の空気浄化機能をもつファンは、
常に多量の空気が接触する翼の表面に二酸化チタンの薄
膜が形成されている。このため多量の空気を効率的に浄
化できる。また、発光ダイオードを組付けたファンで
は、紫外線光源と光触媒が一組として存在するため、紫
外線光源を別に必要としない。このため各種装置の送風
機として組み込み、装置を流れる空気を浄化できる。The fan having the air purifying function of the present invention is
A thin film of titanium dioxide is formed on the surface of the blade that is constantly in contact with a large amount of air. Therefore, a large amount of air can be efficiently purified. In addition, in the fan in which the light emitting diode is assembled, since the ultraviolet light source and the photocatalyst are present as one set, the ultraviolet light source is not separately required. Therefore, it can be installed as a blower for various devices and the air flowing through the devices can be purified.
【００２５】また、発光ダイオ−ドは非常に小さな発光
素子であるため、発光ダイオ−ドを設置するための多く
の空間を必要としない。このため空気浄化機能をもつフ
ァンが大型化することもない。Since the light emitting diode is a very small light emitting element, it does not require much space for installing the light emitting diode. Therefore, the fan having the air purifying function does not become large.
【図１】 図１は本発明の第一実施例の空気浄化機能を
もつファンの一部を省略した平面図である。FIG. 1 is a plan view in which a part of a fan having an air purifying function according to a first embodiment of the present invention is omitted.
【図２】 図２は本発明の第二実施例の空気浄化機能を
もつファンの平面図である。FIG. 2 is a plan view of a fan having an air purifying function according to a second embodiment of the present invention.
【図３】 図３は本発明の第三実施例の空気浄化機能を
もつファンの横断面図である。FIG. 3 is a cross-sectional view of a fan having an air purifying function according to a third embodiment of the present invention.
１：回転軸部 ２：側面板 ３：支柱 ４：翼 ５：二酸化
チタンの薄膜 ６：案内部 ７：発光ダイオード １１：回転軸
部 １２：回転軸部 ４１：翼 ４２：翼 ５１：二酸化チタンの薄膜 ５２：二酸
化チタンの薄膜1: Rotating shaft part 2: Side plate 3: Support rod 4: Wing 5: Titanium dioxide thin film 6: Guide part 7: Light emitting diode 11: Rotating shaft part 12: Rotating shaft part 41: Wing 42: Wing 51: Titanium dioxide Thin film 52: Titanium dioxide thin film
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田牧 真人 愛知県西春日井郡春日町大字落合字長畑１ 番地 豊田合成株式会社内 (72)発明者 酒井 和宏 愛知県西春日井郡春日町大字落合字長畑１ 番地 豊田合成株式会社内 (72)発明者 山口 寿夫 愛知県西春日井郡春日町大字落合字長畑１ 番地 豊田合成株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masato Tamaki, Masato Tamaki, Ochiai, Nagachi, Kasuga-cho, Nishi-Kasugai-gun, Aichi Toyoda Gosei Co., Ltd. Inside Toyoda Gosei Co., Ltd. (72) Inventor Toshio Yamaguchi No. 1 Nagahata, Ochiai, Kasuga-cho, Nishikasugai-gun, Aichi Prefecture Inside Toyoda Gosei Co., Ltd.
Claims (5)
の翼と、 該翼の表面に設けられた二酸化チタンの薄膜と、 を具備することを特徴とする空気浄化機能をもつファ
ン。1. A rotary shaft portion, a plurality of blades held by the rotary shaft portion and arranged at equal intervals in a circumferential direction, and a thin film of titanium dioxide provided on a surface of the blade. A fan with a characteristic air purification function.
００ｎｍの紫外線を放射する発光ダイオ−ドをもつ請求
項１に記載の空気浄化機能をもつファン。2. The thin film of titanium dioxide has a wavelength of 360 to 4
The fan having an air purifying function according to claim 1, further comprising a light emitting diode that emits ultraviolet rays of 00 nm.
状の案内部を持ち、前記発光ダイオードは該案内部に設
けられている請求項２に記載の空気浄化機能をもつファ
ン。3. The fan having an air purifying function according to claim 2, further comprising a cylindrical guide portion surrounding a centrifugal side of a rotation locus of the tip of the blade, and the light emitting diode being provided in the guide portion.
られている請求項２に記載の空気浄化機能をもつファ
ン。4. The fan having an air purifying function according to claim 2, wherein the light emitting diode is provided on the rotating shaft portion.
化ガリウム（ＧａＮ）系光半導体の結晶体からなる請求
項２、請求項３または請求項４に記載の空気浄化機能を
もつファン。5. The fan having an air purifying function according to claim 2, 3 or 4, wherein the light emitting diode is made of a pn-junction gallium nitride (GaN) optical semiconductor crystal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7192829A JPH0938189A (en) | 1995-07-28 | 1995-07-28 | Fan having air cleaning function |
| US08/687,667 US5919422A (en) | 1995-07-28 | 1996-07-26 | Titanium dioxide photo-catalyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7192829A JPH0938189A (en) | 1995-07-28 | 1995-07-28 | Fan having air cleaning function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0938189A true JPH0938189A (en) | 1997-02-10 |
Family
ID=16297675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7192829A Pending JPH0938189A (en) | 1995-07-28 | 1995-07-28 | Fan having air cleaning function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0938189A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10314597A (en) * | 1997-05-20 | 1998-12-02 | Hitachi Ltd | Product having low temperature curing type highly active oxide photocatalyst film |
| JP2003305371A (en) * | 1996-09-20 | 2003-10-28 | Hitachi Ltd | Photocatalyst thin film and article equipped therewith |
| JP2006305084A (en) * | 2005-04-28 | 2006-11-09 | Kyushu Hitachi Maxell Ltd | Warm air drier |
| GB2473271A (en) * | 2009-09-08 | 2011-03-09 | Michael John Scott | Disinfectant light |
| JP2015160067A (en) * | 2014-02-28 | 2015-09-07 | 株式会社イリス | Indoor air purification apparatus |
| JP2017225629A (en) * | 2016-06-22 | 2017-12-28 | 美浜株式会社 | Sterilization apparatus |
| JP2018526196A (en) * | 2015-07-07 | 2018-09-13 | ユーヴイエアエックス， インコーポレイテッドＵｖａｉｒｘ， Ｉｎｃ． | Reaction core system for photocatalytic cleaning |
| WO2019139178A1 (en) * | 2018-01-09 | 2019-07-18 | 충남대학교산학협력단 | Ion exchange scrubber device for selectively removing trace chemical gas |
| KR20200011814A (en) * | 2018-07-25 | 2020-02-04 | 엘지전자 주식회사 | Sterilizing module and home appliance including the same |
| WO2021149724A1 (en) * | 2020-01-24 | 2021-07-29 | Ａｐｓジャパン株式会社 | Photocatalyst unit and mask provided with photocatalyst unit |
| KR102285032B1 (en) * | 2020-09-10 | 2021-08-04 | 김영준 | Sterilization Device Using Laser |
| WO2023002765A1 (en) * | 2021-07-21 | 2023-01-26 | Ａｐｓジャパン株式会社 | Photocatalyst unit and method for manufacturing photocatalyst unit |
-
1995
- 1995-07-28 JP JP7192829A patent/JPH0938189A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003305371A (en) * | 1996-09-20 | 2003-10-28 | Hitachi Ltd | Photocatalyst thin film and article equipped therewith |
| JPH10314597A (en) * | 1997-05-20 | 1998-12-02 | Hitachi Ltd | Product having low temperature curing type highly active oxide photocatalyst film |
| JP2006305084A (en) * | 2005-04-28 | 2006-11-09 | Kyushu Hitachi Maxell Ltd | Warm air drier |
| GB2473271A (en) * | 2009-09-08 | 2011-03-09 | Michael John Scott | Disinfectant light |
| JP2015160067A (en) * | 2014-02-28 | 2015-09-07 | 株式会社イリス | Indoor air purification apparatus |
| JP2018526196A (en) * | 2015-07-07 | 2018-09-13 | ユーヴイエアエックス， インコーポレイテッドＵｖａｉｒｘ， Ｉｎｃ． | Reaction core system for photocatalytic cleaning |
| JP2017225629A (en) * | 2016-06-22 | 2017-12-28 | 美浜株式会社 | Sterilization apparatus |
| WO2019139178A1 (en) * | 2018-01-09 | 2019-07-18 | 충남대학교산학협력단 | Ion exchange scrubber device for selectively removing trace chemical gas |
| KR20200011814A (en) * | 2018-07-25 | 2020-02-04 | 엘지전자 주식회사 | Sterilizing module and home appliance including the same |
| WO2021149724A1 (en) * | 2020-01-24 | 2021-07-29 | Ａｐｓジャパン株式会社 | Photocatalyst unit and mask provided with photocatalyst unit |
| CN115023288A (en) * | 2020-01-24 | 2022-09-06 | 先技精工(日本)有限公司 | Photocatalytic component and mask comprising same |
| EP4094832A4 (en) * | 2020-01-24 | 2024-04-17 | APS Japan Co., Ltd. | Photocatalyst unit and mask provided with photocatalyst unit |
| KR102285032B1 (en) * | 2020-09-10 | 2021-08-04 | 김영준 | Sterilization Device Using Laser |
| WO2023002765A1 (en) * | 2021-07-21 | 2023-01-26 | Ａｐｓジャパン株式会社 | Photocatalyst unit and method for manufacturing photocatalyst unit |
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