JP2002159829A - Photocatalytic reaction apparatus - Google Patents
Photocatalytic reaction apparatusInfo
- Publication number
- JP2002159829A JP2002159829A JP2000360975A JP2000360975A JP2002159829A JP 2002159829 A JP2002159829 A JP 2002159829A JP 2000360975 A JP2000360975 A JP 2000360975A JP 2000360975 A JP2000360975 A JP 2000360975A JP 2002159829 A JP2002159829 A JP 2002159829A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- discharge
- corona discharge
- generated
- high voltage
- 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
- 238000013032 photocatalytic reaction Methods 0.000 title abstract description 12
- 239000011941 photocatalyst Substances 0.000 claims abstract description 23
- 230000001699 photocatalysis Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 abstract description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 9
- 238000000354 decomposition reaction Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000005069 ears Anatomy 0.000 description 3
- 230000001877 deodorizing effect Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Landscapes
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電極間の放電によ
って発生させた放電装置からの紫外線で、光触媒を励起
させる光触媒反応装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photocatalyst reaction apparatus for exciting a photocatalyst by ultraviolet rays generated by a discharge between electrodes from a discharge device.
【０００２】[0002]
【発明が解決しようとする課題】従来、脱臭装置や、Ｎ
Ｏｘ分解装置や、排気ガス処理装置として、光触媒反応
装置が知られている。こうした光触媒反応装置は紫外線
発生装置を備えており、紫外線ランプを用いたり、ある
いは高電圧を電極間に印加してコロナ放電を起こすこと
で、光触媒を励起させるための紫外線を発生させてい
る。Conventionally, a deodorizing device and N
A photocatalytic reaction device is known as an Ox decomposition device or an exhaust gas treatment device. Such a photocatalytic reaction device is provided with an ultraviolet ray generating device, and generates an ultraviolet ray for exciting the photocatalyst by using an ultraviolet lamp or by applying a high voltage between the electrodes to cause corona discharge.
【０００３】しかし、後者のいわゆる放電型光触媒反応
装置では、直流の高電圧を紫外線発生装置の電極間に印
加すると、コロナ放電から火花放電へと移行し易く、一
度火花放電を起こすと電圧を下げない限りこの状態が継
続する。つまり、安定したコロナ放電を発生させるに
は、火花放電への移行を避けるため電極間の電圧をあま
り高くできないため、光触媒反応を起こすのに必要な紫
外線の発生量も上げられないという欠点があった。ま
た、こうした欠点に対処するため、火花放電が起こって
も電極間に断続的に電圧を印加する、すなわち高電圧パ
ルスを電極間に印加するなどの方法も考えられるが、こ
の場合は断続的なコロナ放電による放電音が紫外線発生
装置から発生し、人の住居空間に設置するに当り耳障り
となる問題を有していた。However, in the latter so-called discharge type photocatalytic reactor, when a high DC voltage is applied between the electrodes of the ultraviolet ray generator, the transition from corona discharge to spark discharge easily occurs, and once spark discharge occurs, the voltage is reduced. This condition will continue unless otherwise noted. In other words, in order to generate a stable corona discharge, the voltage between the electrodes cannot be increased so much as to avoid the transition to the spark discharge, so that there is a drawback that the amount of ultraviolet light required to cause a photocatalytic reaction cannot be increased. Was. In order to cope with such a drawback, a method of intermittently applying a voltage between the electrodes even when a spark discharge occurs, that is, applying a high voltage pulse between the electrodes can be considered. Discharge noise due to corona discharge is generated from the ultraviolet ray generating device, and it has a problem that it becomes annoying when installed in a living space of a person.
【０００４】そこで、本発明は上記問題点を解決して、
電極間にコロナ放電を起こさせる際に、放電音が耳障り
にならない光触媒反応装置を提供することをその目的と
する。Therefore, the present invention solves the above problems,
It is an object of the present invention to provide a photocatalytic reaction device in which a discharge sound is not annoying when corona discharge is caused between electrodes.
【０００５】[0005]
【課題を解決するための手段】本発明の光触媒反応装置
は、前記目的を達成するために、光触媒と、電極間の放
電によって紫外線を発生させ、前記光触媒を励起させる
装置とを備え、前記電極間に周波数が１８ｋＨｚ以上の
高電圧パルスを印加するように構成したものである。According to the present invention, there is provided a photocatalytic reaction device comprising: a photocatalyst; and a device for generating ultraviolet rays by discharging between the electrodes to excite the photocatalyst. A high voltage pulse having a frequency of 18 kHz or more is applied therebetween.
【０００６】電極間に高電圧パルスを印加すると、この
電極間のコロナ放電によって紫外線が発生し、光触媒を
励起して空気中の臭いの元となる有機物を分解する。そ
の際、人が急に聴き取りにくくなる周波数よりもさらに
高い１８ｋＨｚ以上の周波数の高電圧パルスを電極間に
印加しているので、コロナ放電により生じる放電音も１
８ｋＨｚ以上となって人の耳には殆ど聴き取れなくな
る。よって、静かな住居空間内においてもコロナ放電に
よる放電音が耳障りにならない。When a high voltage pulse is applied between the electrodes, ultraviolet light is generated by the corona discharge between the electrodes, and excites the photocatalyst to decompose organic substances that cause odor in the air. At this time, since a high-voltage pulse having a frequency of 18 kHz or higher, which is higher than the frequency at which a person suddenly becomes difficult to hear, is applied between the electrodes, the discharge sound generated by the corona discharge is also one.
When the frequency becomes 8 kHz or more, it becomes almost inaudible to human ears. Therefore, the discharge sound due to the corona discharge does not become annoying even in a quiet residential space.
【０００７】[0007]
【発明の実施形態】以下、添付図面に基づき、本発明に
おける光触媒反応装置の各実施例を説明する。なお、各
実施例に示す光触媒反応装置は、いずれも脱臭装置内の
脱臭器として用いられるものである。Embodiments of the present invention will be described below with reference to the accompanying drawings. Each of the photocatalyst reactors shown in the examples is used as a deodorizer in a deodorizer.
【０００８】図１〜図３は本発明の第１実施例を示すも
ので、１は脱臭すべき空気の通路を形成する管体、２，
２はこの管体１の内部に２個並設された光触媒である。
光触媒２，２の間にはプラス電極３が設置されると共
に、光触媒２，２の前後には２つのマイナス電極４，４
がそれぞれ設置される。つまり各光触媒２，２は、管体
１の内部で、プラス電極３とマイナス電極４の間に挟ま
れた状態で設けられる。電極としてのプラス電極３とマ
イナス電極４，４は、それぞれ高電圧パルス発生器５の
プラス側出力端子６とマイナス側出力端子７に接続され
ており、装置の動作時には、図３に示すような高電圧の
パルスが印加される。さらに、管体１の下流側には、コ
ロナ放電により生じるオゾンを分解するためのオゾン分
解触媒８が設けられる。1 to 3 show a first embodiment of the present invention, in which 1 is a tube forming an air passage to be deodorized,
Reference numeral 2 denotes two photocatalysts arranged side by side inside the tube 1.
A positive electrode 3 is provided between the photocatalysts 2, and two negative electrodes 4, 4 are provided before and after the photocatalyst 2, 2.
Are installed respectively. That is, each of the photocatalysts 2 and 2 is provided inside the tube 1 so as to be sandwiched between the plus electrode 3 and the minus electrode 4. The positive electrode 3 and the negative electrodes 4 and 4 as electrodes are connected to the positive output terminal 6 and the negative output terminal 7 of the high-voltage pulse generator 5, respectively. When the apparatus operates, as shown in FIG. A high voltage pulse is applied. Further, an ozone decomposition catalyst 8 for decomposing ozone generated by corona discharge is provided on the downstream side of the tube 1.
【０００９】また図２に示すように、プラス電極３とマ
イナス電極４，４は、いずれもメッシュ状に形成されて
いるとともに、光触媒２やオゾン分解触媒８も細かく巣
が開いた微細孔形状を有しており、管体１の内部におい
て空気の流れＦを妨げない形状となっている。そして、
プラス電極３とマイナス電極４，４、および高電圧パル
ス発生器５により、プラス電極３とマイナス電極４との
間で発生するコロナ放電によって紫外線を発生させる装
置としての放電装置９が構成される。As shown in FIG. 2, both the plus electrode 3 and the minus electrodes 4 and 4 are formed in a mesh shape, and the photocatalyst 2 and the ozone decomposition catalyst 8 also have fine pores with fine nests. And has a shape that does not hinder the flow of air F inside the tube 1. And
The positive electrode 3, the negative electrodes 4 and 4, and the high-voltage pulse generator 5 constitute a discharge device 9 as a device for generating ultraviolet light by corona discharge generated between the positive electrode 3 and the negative electrode 4.
【００１０】次に、上記構成についてその作用を説明す
る。本実施例における脱臭器を動作するに当っては、高
電圧パルス発生器５のプラス側出力端子６とマイナス側
出力端子７との間から、図３に示す高電圧のパルスを発
生させる。そのパルス電圧のピーク値Ｖは、数ｋＶ〜数
十ｋＶで、周期Ｔは５５μｓ以下、周波数でいえば１８
ｋＨｚ以上であり、またパルス幅ｔは数μｓである。Next, the operation of the above configuration will be described. In operating the deodorizer in the present embodiment, a high-voltage pulse shown in FIG. 3 is generated between the plus output terminal 6 and the minus output terminal 7 of the high-voltage pulse generator 5. The peak value V of the pulse voltage is several kV to several tens kV, the period T is 55 μs or less, and the frequency is 18
kHz or more, and the pulse width t is several μs.
【００１１】上記高電圧のパルスがプラス電極３とマイ
ナス電極４との間に印加されると、管体１内を流れる空
気の絶縁が部分的に破れて、光触媒２の両側面にあるプ
ラス電極３とマイナス電極４との間でコロナ放電が起き
る。コロナ放電が起きると、紫外線とオゾンが発生し、
その紫外線によって光触媒２が励起され、空気中の臭い
の元となっている有機物が分解される。コロナ放電から
火花放電が発生するにはある程度時間が掛る。その時間
は電極３，４間の距離にもよるが、パルス幅ｔを数μｓ
と短くしているのは、火花放電が発生する前に電極３，
４間の電圧を下げるためである。When the high voltage pulse is applied between the positive electrode 3 and the negative electrode 4, the insulation of the air flowing through the tube 1 is partially broken, and the positive electrodes on both sides of the photocatalyst 2 are broken. Corona discharge occurs between the negative electrode 3 and the negative electrode 4. When corona discharge occurs, ultraviolet rays and ozone are generated,
The ultraviolet light excites the photocatalyst 2 and decomposes organic substances that cause odor in the air. It takes some time for spark discharge to occur from corona discharge. The time depends on the distance between the electrodes 3 and 4, but the pulse width t is several μs.
The reason is that the electrodes 3, 3 before spark discharge occurs
This is to lower the voltage between the four.
【００１２】ここで、プラス電極３とマイナス電極４と
の間に印加される高電圧のパルスが例えば可聴周波数範
囲内の例えば２００Ｈｚや５０Ｈｚの場合、コロナ放電
によって生じる放電音も同様に２００Ｈｚや５０Ｈｚと
なって耳障りな音となる。しかし本実施例においては、
人が聴き取れる最小の音圧である最少可聴値が急激に高
くなる周波数、つまり人が急に聴き取りにくくなる周波
数の平均値である１６ｋＨｚよりもさらに高い１８ｋＨ
ｚ以上の高電圧パルスを、プラス電極３とマイナス電極
４との間に印加しているので、コロナ放電により生じる
放電音も１８ｋＨｚ以上となって人の耳には聴き取り難
く、静かな住居空間内においても耳障りにならない。一
方、パルス幅ｔが数μｓで高電圧パルスの周波数が２０
０Ｈｚの場合と比べると、同じパルス幅ｔでも周波数を
１８ｋＨｚにすれば、コロナ放電を発生させている時間
は９０倍となり、その紫外線によって光触媒が励起して
空気中の有機物が分解するの力も大幅に向上する。Here, when the high voltage pulse applied between the plus electrode 3 and the minus electrode 4 is, for example, 200 Hz or 50 Hz within the audible frequency range, the discharge sound generated by the corona discharge is also 200 Hz or 50 Hz. The sound becomes harsh. However, in this embodiment,
18 kHz, which is higher than the frequency at which the minimum audible value, which is the minimum sound pressure that can be heard by a person, suddenly rises, that is, 16 kHz, which is the average value of the frequency at which a person suddenly becomes difficult to hear.
Since a high voltage pulse of z or more is applied between the plus electrode 3 and the minus electrode 4, the discharge sound generated by corona discharge is also 18 kHz or more, which is hard to be heard by human ears, and a quiet living space. It is not harsh even inside. On the other hand, when the pulse width t is several μs and the frequency of the high-voltage pulse is 20
Compared to the case of 0 Hz, if the frequency is set to 18 kHz even with the same pulse width t, the time during which corona discharge is generated becomes 90 times, and the ultraviolet light excites the photocatalyst, greatly increasing the power of decomposing organic substances in the air. To improve.
【００１３】また、コロナ放電の際に発生するオゾンの
酸化作用によっても空気中の有機物が分解され、光触媒
反応と共に空気の脱臭効果を高めている。管体１内に侵
入した空気は、光触媒２，プラス電極３およびマイナス
電極４を通過する際に、上述した光触媒反応とオゾンの
酸化作用とによる効果で有機物が分解され、脱臭した状
態で排出される。その際、プラス電極３やマイナス電極
４の下流側にあるオゾン分解触媒８は、コロナ放電によ
り発生したオゾンを人体に無害な濃度にまで低下させ
る。したがって、住居空間内の空気は管体１内を通過す
ることで脱臭され、しかも管体１から排出される空気中
のオゾン濃度も、人体に影響のないレベルにまで低下さ
せることができる。Organic substances in the air are also decomposed by the oxidizing action of ozone generated during corona discharge, and the deodorizing effect of the air is enhanced together with the photocatalytic reaction. When passing through the photocatalyst 2, the positive electrode 3, and the negative electrode 4, the air that has entered the tubular body 1 is decomposed into organic substances by the effect of the photocatalytic reaction and the oxidizing action of ozone, and is discharged in a deodorized state. You. At that time, the ozone decomposition catalyst 8 downstream of the positive electrode 3 and the negative electrode 4 reduces the concentration of ozone generated by corona discharge to a concentration harmless to the human body. Therefore, the air in the dwelling space is deodorized by passing through the tube 1, and the ozone concentration in the air discharged from the tube 1 can be reduced to a level that does not affect the human body.
【００１４】以上のように上記実施例では、光触媒２
と、電極であるプラス電極３とマイナス電極４との間の
放電によって紫外線を発生させ、光触媒２を励起させる
放電装置９とを備えた光触媒反応装置において、前記プ
ラス電極３とマイナス電極４との間に周波数が１８ｋＨ
ｚ以上の高電圧パルスを印加するように構成している。As described above, in the above embodiment, the photocatalyst 2
And a discharge device 9 for generating ultraviolet rays by a discharge between the positive electrode 3 and the negative electrode 4 to excite the photocatalyst 2, wherein the positive electrode 3 and the negative electrode 4 18kHz frequency between
It is configured to apply a high voltage pulse of z or more.
【００１５】プラス電極３とマイナス電極４との間に高
電圧パルスを印加すると、このプラス電極３とマイナス
電極４との間のコロナ放電によって紫外線が発生し、光
触媒２を励起して、空気中の臭いの元となる有機物を分
解する。その際、プラス電極３とマイナス電極４との間
に、人が急に聴き取りにくくなる周波数よりもさらに高
い１８ｋＨｚ以上の周波数の高電圧パルスを印加してい
るので、コロナ放電により生じる放電音も１８ｋＨｚ以
上となって人の耳には殆ど聴き取れなくなる。よって、
静かな住居空間内においてもコロナ放電による放電音が
耳障りにならない。When a high-voltage pulse is applied between the plus electrode 3 and the minus electrode 4, ultraviolet rays are generated by the corona discharge between the plus electrode 3 and the minus electrode 4, and the photocatalyst 2 is excited to generate air. Decomposes organic matter that causes odor. At this time, since a high voltage pulse having a frequency of 18 kHz or higher, which is higher than the frequency at which a person suddenly becomes difficult to hear, is applied between the positive electrode 3 and the negative electrode 4, the discharge sound generated by corona discharge is also reduced. At 18 kHz or higher, human ears can hardly hear. Therefore,
The discharge sound due to corona discharge does not become annoying even in a quiet residential space.
【００１６】なお、高電圧パルスの上限値は、高電圧パ
ルス発生器５の性能などを考慮して、１００ｋＨｚ程度
とするのが好ましい。また、図１および図２において、
プラス電極３とマイナス電極４を入れ替えてもよい。The upper limit of the high voltage pulse is preferably set to about 100 kHz in consideration of the performance of the high voltage pulse generator 5 and the like. In FIGS. 1 and 2,
The plus electrode 3 and the minus electrode 4 may be exchanged.
【００１７】図４は、本発明の第２実施例を示す高電圧
パルスの波形図で、前記第１実施例では、高電圧パルス
発生器５から発生するパルスの極性が一方向に固定され
ていたが、本実施例では１パルスずつ極性が正と負に交
互に入れ替わっている点が特徴である。このようにする
と、電極３，４の帯電の極性も交互に入れ替わるので、
電極３，４の電食などによる消耗が少なく、装置の長寿
命化を期待できる。また、コロナ放電はマイナス電極４
よりもむしろプラス電極３に起きやすいことから、高電
圧パルス発生器５から発生するパルスの極性が交互に入
れ替わる高電圧パルス発生器５を用いる場合は、図１に
示すように、合計で３枚のプラス電極３およびマイナス
電極４，４を用いなくても、図５に示すような２枚の電
極３，４が光触媒２の両側面にあれば、光触媒２の一側
面ではなく両側面から紫外線を交互に照射することにな
り、より少ない電極３，４の枚数で効率よく光触媒反応
を起こすことができる。FIG. 4 is a waveform diagram of a high voltage pulse showing a second embodiment of the present invention. In the first embodiment, the polarity of the pulse generated from the high voltage pulse generator 5 is fixed in one direction. However, the present embodiment is characterized in that the polarity is alternately switched between positive and negative for each pulse. In this case, the polarity of charging of the electrodes 3 and 4 is alternately changed.
The electrodes 3 and 4 are less consumed by electrolytic corrosion and the like, and a longer life of the device can be expected. In addition, corona discharge is applied to the negative electrode 4
In the case where the high voltage pulse generator 5 in which the polarity of the pulse generated from the high voltage pulse generator 5 is alternately used is used since the positive electrode 3 is more likely to occur in the positive electrode 3, as shown in FIG. Without using the plus electrode 3 and the minus electrodes 4, 4, if the two electrodes 3, 4 as shown in FIG. Are alternately irradiated, and the photocatalytic reaction can be efficiently caused with a smaller number of electrodes 3 and 4.
【００１８】本発明は上記実施例に限定されるものでは
なく、本発明の要旨の範囲において種々の変形実施が可
能である。本実施例では、光触媒反応装置を脱臭器に用
いた例を示したが、それ以外のＮＯｘ分解装置や排気ガ
ス処理装置などにも勿論利用できる。The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. In this embodiment, an example of using the photocatalytic reaction device deodorizer, can of course also used for such other of the NO x decomposition apparatus and an exhaust gas treatment apparatus.
【００１９】[0019]
【発明の効果】本発明の光触媒反応装置によれば、電極
間にコロナ放電を起こさせる際に、放電音が耳障りにな
らないようにすることができる。According to the photocatalytic reactor of the present invention, when corona discharge is caused between the electrodes, it is possible to prevent the discharge noise from being annoying.
【図１】本発明の第１実施例を示す光触媒反応装置の全
体構造をあらわした断面図である。FIG. 1 is a cross-sectional view showing the entire structure of a photocatalytic reactor according to a first embodiment of the present invention.
【図２】同上要部の斜視図である。FIG. 2 is a perspective view of a main part of the same.
【図３】同上電極間に印加される高電圧パルスの波形図
である。FIG. 3 is a waveform diagram of a high voltage pulse applied between the electrodes.
【図４】本発明の第２実施例を示す電極間に印加される
高電圧パルスの波形図である。FIG. 4 is a waveform diagram of a high voltage pulse applied between electrodes according to a second embodiment of the present invention.
【図５】同上光触媒反応装置の全体構造をあらわした断
面図である。FIG. 5 is a cross-sectional view showing the entire structure of the photocatalytic reaction device.
２ 光触媒 ３ プラス電極（電極） ４ マイナス電極（電極） ９ 放電装置（装置） 2 Photocatalyst 3 Positive electrode (electrode) 4 Negative electrode (electrode) 9 Discharge device (device)
Claims (1)
を発生させ、前記光触媒を励起させる装置とを備え、前
記電極間に周波数が１８ｋＨｚ以上の高電圧パルスを印
加するように構成したことを特徴とする光触媒反応装
置。1. A photocatalyst, and a device for generating ultraviolet rays by discharging between electrodes to excite the photocatalyst, wherein a high voltage pulse having a frequency of 18 kHz or more is applied between the electrodes. Photocatalytic reactor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000360975A JP2002159829A (en) | 2000-11-28 | 2000-11-28 | Photocatalytic reaction apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000360975A JP2002159829A (en) | 2000-11-28 | 2000-11-28 | Photocatalytic reaction apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002159829A true JP2002159829A (en) | 2002-06-04 |
Family
ID=18832479
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000360975A Pending JP2002159829A (en) | 2000-11-28 | 2000-11-28 | Photocatalytic reaction apparatus |
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| Country | Link |
|---|---|
| JP (1) | JP2002159829A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1669331A1 (en) * | 2004-12-09 | 2006-06-14 | Flabeg GmbH & Co. KG | Process for production of an anti-fogging element and device for activation of this element |
| AU2004244900B2 (en) * | 2003-06-05 | 2007-04-05 | Daikin Industries, Ltd. | Discharge apparatus and air purifying apparatus |
| JP2008023364A (en) * | 2003-06-05 | 2008-02-07 | Daikin Ind Ltd | Discharge apparatus and air purifying apparatus |
| WO2017010839A1 (en) * | 2015-07-16 | 2017-01-19 | 강성한 | Air sterilizer and purifier |
-
2000
- 2000-11-28 JP JP2000360975A patent/JP2002159829A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2004244900B2 (en) * | 2003-06-05 | 2007-04-05 | Daikin Industries, Ltd. | Discharge apparatus and air purifying apparatus |
| US7270698B2 (en) | 2003-06-05 | 2007-09-18 | Daikin Industries, Ltd. | Discharge device and air purifier |
| JP2008023364A (en) * | 2003-06-05 | 2008-02-07 | Daikin Ind Ltd | Discharge apparatus and air purifying apparatus |
| JP4706681B2 (en) * | 2003-06-05 | 2011-06-22 | ダイキン工業株式会社 | Discharge device and air purification device |
| EP1669331A1 (en) * | 2004-12-09 | 2006-06-14 | Flabeg GmbH & Co. KG | Process for production of an anti-fogging element and device for activation of this element |
| WO2017010839A1 (en) * | 2015-07-16 | 2017-01-19 | 강성한 | Air sterilizer and purifier |
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