JP4475126B2 - Electrostatic atomizer - Google Patents

Electrostatic atomizer Download PDF

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Publication number
JP4475126B2
JP4475126B2 JP2005022167A JP2005022167A JP4475126B2 JP 4475126 B2 JP4475126 B2 JP 4475126B2 JP 2005022167 A JP2005022167 A JP 2005022167A JP 2005022167 A JP2005022167 A JP 2005022167A JP 4475126 B2 JP4475126 B2 JP 4475126B2
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Japan
Prior art keywords
electrostatic
housing
atomization
electrode
atomizing
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JP2005022167A
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JP2006205094A (en
Inventor
康訓 松井
貴司 中川
尚史 児玉
友宏 山口
利久 平井
清 高島
弘典 片山
純一 渡邉
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Panasonic Corp
Panasonic Electric Works Co Ltd
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Panasonic Corp
Matsushita Electric Works Ltd
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Priority to JP2005022167A priority Critical patent/JP4475126B2/en
Priority to KR1020050088048A priority patent/KR100707845B1/en
Priority to US11/234,173 priority patent/US7350317B2/en
Priority to DE602005019359T priority patent/DE602005019359D1/en
Priority to DE602005019713T priority patent/DE602005019713D1/en
Priority to EP06023389A priority patent/EP1745716B1/en
Priority to AT06023389T priority patent/ATE459426T1/en
Priority to EP05256010A priority patent/EP1639910B1/en
Priority to AT05256010T priority patent/ATE457663T1/en
Priority to CNB2005101064529A priority patent/CN100425178C/en
Priority to CN2007101995695A priority patent/CN101172270B/en
Priority to HK06105657.7A priority patent/HK1085628A1/en
Publication of JP2006205094A publication Critical patent/JP2006205094A/en
Priority to KR1020060125455A priority patent/KR100707846B1/en
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    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/20—Additional enhancing means
    • A45D2200/202—Ionisation

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  • Cleaning And Drying Hair (AREA)
  • Air Humidification (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Description

本発明は、液体を静電霧化してミストを生成する静電霧化装置に関するものである。   The present invention relates to an electrostatic atomizer that electrostatically atomizes a liquid to generate mist.

従来から、液体を静電霧化してミストを生成する静電霧化装置が知られている（例えば特許文献１参照）。この静電霧化装置では、電圧印加部により霧化電極と対向電極との間に高電圧を印加することで、霧化電極の先端部の水が高電圧により大きなエネルギーを受けて分裂を繰り返すレイリー分裂を起こして、反応性に富む活性種を持ったナノメータサイズのミストを生成する静電霧化がなされ、このミストによって室内空気や、室内壁面等の付着物の脱臭を行うものである。   2. Description of the Related Art Conventionally, an electrostatic atomizer that generates a mist by electrostatic atomizing a liquid is known (see, for example, Patent Document 1). In this electrostatic atomizer, by applying a high voltage between the atomizing electrode and the counter electrode by the voltage applying unit, the water at the tip of the atomizing electrode receives a large amount of energy from the high voltage and repeats splitting. Electrostatic atomization that causes Rayleigh splitting and generates nanometer-sized mist having active species rich in reactivity is performed, and the odor is used to deodorize indoor air and deposits on the indoor wall surface.

このような静電霧化装置は、生成したミストを効率良く飛散させるために、静電霧化装置内に送風装置を備えた空気流路を設け、この空気流路に霧化電極と対向電極とを収納した静電霧化用ハウジングを配設し、生成したミストを空気の流れに乗せて飛散させるようにしていた。静電霧化用ハウジングは、霧化電極と対向電極とを収納し、霧化電極の先端部の液体が空気流路の空気の流れに直接晒されて蒸発するのを防止しており、また、霧化電極の先端部で生成したミストは静電気力によって対向電極の方へ移動するため、ミストを静電霧化用ハウジング外に吐出するための吐出口は対向電極の近傍に設けてある。   Such an electrostatic atomizer is provided with an air channel provided with a blower in the electrostatic atomizer to efficiently disperse the generated mist, and the atomization electrode and the counter electrode are provided in the air channel. And an electrostatic atomizing housing in which the generated mist is scattered on an air flow. The electrostatic atomization housing houses the atomization electrode and the counter electrode, and prevents the liquid at the tip of the atomization electrode from being directly exposed to the air flow in the air flow path and evaporating. Since the mist generated at the tip of the atomizing electrode moves toward the counter electrode by electrostatic force, the discharge port for discharging the mist to the outside of the electrostatic atomizing housing is provided in the vicinity of the counter electrode.

このような静電霧化装置にあっては、上述したようにミストを空気の流れに乗せて飛散させようとするものであるが、単に空気流路内に静電霧化用ハウジングを配設しただけでは静電霧化用ハウジングの吐出口からミストは効率良く吐出されるようにはならず、ミストが静電霧化用ハウジング内に滞留したり静電気力によって対向電極に吸着してしまうものである。そしてミストの飛散量を多くするため、静電霧化する液体を増量するとなると、液体や電力の消費量が増大すると共に副生成物としてのオゾンの発生量も増量して好ましくないものであり、また、ミストを飛散させるためのノズルを設けようとすると装置の大型化やコストアップを招いてしまうものであった。
特開２００４−８５１８５号公報 In such an electrostatic atomizing device, as described above, the mist is put on the air flow and scattered, but the electrostatic atomizing housing is simply disposed in the air flow path. The mist will not be discharged efficiently from the discharge port of the electrostatic atomization housing, and the mist will stay in the electrostatic atomization housing or be adsorbed to the counter electrode by electrostatic force. It is. And, in order to increase the amount of mist scattered, increasing the amount of liquid to be electrostatically atomized is not preferable because the amount of liquid and power consumption increases and the amount of ozone generated as a by-product increases. Further, if an attempt is made to provide a nozzle for scattering mist, the apparatus would be increased in size and cost.
JP 2004-85185 A

本発明は上記従来の問題点に鑑みて発明したものであって、その目的とするところは、簡単な構成で霧化電極と対向電極とを収納した静電霧化用ハウジングの吐出口からミストを効率良く吐出することができる静電霧化装置を提供することを課題とするものである。   The present invention has been invented in view of the above-mentioned conventional problems, and the object of the present invention is to provide a mist from the discharge port of the electrostatic atomizing housing that houses the atomizing electrode and the counter electrode with a simple configuration. It is an object of the present invention to provide an electrostatic atomizer capable of efficiently ejecting water.

上記課題を解決するために請求項１に係る静電霧化装置にあっては、静電霧化部１として、先端部で液体Ｌを静電霧化してミストＭを生成するための針状又は棒状をした霧化電極１１と、前記霧化電極１１の先端部１１ａに液体Ｌを供給する液体供給手段１２と、前記霧化電極１１の先端部１１ａに対向するように配置される対向電極１３と、前記霧化電極１１と対向電極１３との間に高電圧を印加する電圧印加部１４とを備え、霧化電極１１と対向電極１３とを静電霧化用ハウジング２に収納すると共に、霧化電極１１の先端部１１ａで生成して静電気力により対向電極１３の方へ移動するミストＭの静電霧化用ハウジング２からの吐出口２２を対向電極１３の近傍に設け、前記静電霧化用ハウジング２を送風装置４を備えた空気流路３内に配設した静電霧化装置において、霧化電極１１を静電霧化用ハウジング２の前記空気流路３の流れ方向の上流側の内壁面２３から下流側に向けて突出させると共に該霧化電極１１よりも下流側に対向電極１３を配置し、静電霧化用ハウジング２内への空気の吸入口２１を、静電霧化用ハウジング２の側壁部２４の前記上流側の内壁面２３と空気流路３の流れ方向において略同じ部位から霧化電極１１の先端部１１ａ又はそれよりも上流側の部位にかけて形成し、霧化電極１１を突出させる前記上流側の内壁面２３に下流側ほど小径となるテーパ部２５を設けて成ることを特徴とするものである。   In order to solve the above-mentioned problem, in the electrostatic atomizing apparatus according to claim 1, as the electrostatic atomizing unit 1, a needle shape for generating the mist M by electrostatically atomizing the liquid L at the tip portion. Or the rod-shaped atomization electrode 11, the liquid supply means 12 which supplies the liquid L to the front-end | tip part 11a of the said atomization electrode 11, and the counter electrode arrange | positioned so as to oppose the front-end | tip part 11a of the said atomization electrode 11 13 and a voltage applying unit 14 for applying a high voltage between the atomizing electrode 11 and the counter electrode 13, and storing the atomizing electrode 11 and the counter electrode 13 in the electrostatic atomizing housing 2. The discharge port 22 from the electrostatic atomization housing 2 for the mist M generated at the tip 11a of the atomizing electrode 11 and moving toward the counter electrode 13 by electrostatic force is provided in the vicinity of the counter electrode 13, In the air flow path 3 provided with the blower device 4 in the electromisting housing 2 In the arranged electrostatic atomizer, the atomization electrode 11 is projected toward the downstream side from the inner wall surface 23 on the upstream side in the flow direction of the air flow path 3 of the housing 2 for electrostatic atomization, and the atomization is performed. The counter electrode 13 is disposed on the downstream side of the electrode 11, the air inlet 21 into the electrostatic atomizing housing 2 is connected to the upstream inner wall surface 23 of the side wall portion 24 of the electrostatic atomizing housing 2. And in the flow direction of the air flow path 3, it is formed from the substantially same part to the tip part 11a of the atomizing electrode 11 or a part upstream thereof, and the upstream inner wall surface 23 from which the atomizing electrode 11 protrudes is provided downstream. A tapered portion 25 having a smaller diameter is provided.

上記のように静電霧化用ハウジング２内への空気の吸入口２１を設けることによって、静電霧化用ハウジング２内に空気の流れが形成されて、霧化電極１１の先端部１１ａで生成されるミストＭが対向電極１３に吸着されることなく吐出口２２から効率良く吐出されることとなって、静電霧化装置からのミストＭの飛散量を増加させることができるものである。特にこの時、吸入口２１を静電霧化用ハウジング２の側壁部２４の上記上流側の内壁面２３と空気流路３の流れ方向において略同じ部位から霧化電極１１の先端部１１ａ又はそれよりも上流側の部位にかけて形成したことで、霧化電極１１の先端部１１ａで乱流が発生するのを防止して空気が静電霧化用ハウジング２を通過する際の圧力損失を低減させることが可能となる。また、静電霧化用ハウジング２の上流側の内壁面２３に下流側ほど小径となるテーパ部２５を設けたことで、吸入口２１から静電霧化用ハウジング２内へ吸入された空気の向きを下流側へとスムーズに変えることができて霧化電極１１の突出基部で乱流が発生するのを防止することができる。   By providing the air inlet 21 into the electrostatic atomizing housing 2 as described above, an air flow is formed in the electrostatic atomizing housing 2, and the tip 11 a of the atomizing electrode 11 is formed. The generated mist M is efficiently discharged from the discharge port 22 without being adsorbed to the counter electrode 13, and the amount of mist M scattered from the electrostatic atomizer can be increased. . In particular, at this time, the suction port 21 is connected to the tip end portion 11a of the atomizing electrode 11 from the upstream side wall surface 23 of the side wall portion 24 of the electrostatic atomizing housing 2 and the flow direction of the air flow path 3 from the substantially same portion. By forming over the upstream portion, turbulent flow is prevented from occurring at the tip 11a of the atomizing electrode 11, and pressure loss when air passes through the electrostatic atomizing housing 2 is reduced. It becomes possible. Further, the tapered inner wall 23 on the upstream side of the electrostatic atomizing housing 2 is provided with a tapered portion 25 having a smaller diameter toward the downstream side, so that the air sucked into the electrostatic atomizing housing 2 from the suction port 21 can be reduced. The direction can be smoothly changed to the downstream side, and the occurrence of turbulent flow at the protruding base of the atomizing electrode 11 can be prevented.

また、請求項２の発明は、請求項１の発明において、静電霧化用ハウジング２の側壁部２４の流れ方向と直交する方向の全周に複数の吸入口２１を略等間隔に形成し、前記吸入口２１の形状を流れ方向の長さが２乃至１０ｍｍの角形状として成ることを特徴とするものである。このような構成とすることで、静電霧化用ハウジング２の全周から中心に向かって空気が対称に吸入され、下流側への空気の流れが効率良く形成される。   The invention of claim 2 is the invention of claim 1, wherein a plurality of suction ports 21 are formed at substantially equal intervals in the entire circumference in a direction orthogonal to the flow direction of the side wall portion 24 of the electrostatic atomizing housing 2. The shape of the suction port 21 is a square shape with a length in the flow direction of 2 to 10 mm. With such a configuration, air is drawn symmetrically from the entire circumference of the electrostatic atomizing housing 2 toward the center, and the air flow toward the downstream side is efficiently formed.

また、請求項３の発明は、請求項１又は２の発明において、静電霧化用ハウジング２の下流側の霧化電極１１と同軸上の部分に位置する直径３乃至１０ｍｍの吐出口２２を有する感電又は漏電を防止するための異物侵入防止部材２６を設けて成ることを特徴とするものである。このような構成とすることで、指や金属片等の異物が挿入されて感電したり漏電したりするのを防止すると共に、異物の挿入によって空気の流れが乱されることがなくミストＭを効率良く吐出することが可能となる。   According to a third aspect of the present invention, in the first or second aspect of the present invention, the discharge port 22 having a diameter of 3 to 10 mm located at a portion coaxial with the atomizing electrode 11 on the downstream side of the electrostatic atomizing housing 2 is provided. A foreign matter intrusion prevention member 26 is provided to prevent electric shock or electric leakage. With such a configuration, it is possible to prevent electric shocks or electric leakage due to insertion of foreign objects such as fingers or metal pieces, and to prevent the mist M from being disturbed by the insertion of foreign objects. It becomes possible to discharge efficiently.

また、請求項４の発明は、請求項１乃至３の発明において、静電霧化用ハウジング２の吸入口２１の外面側に空気流路３を流れる空気を静電霧化用ハウジング２内へ導入するための導入ガイド部２７を設けて成ることを特徴とするものである。このような構成とすることで、空気流路３を流れる空気が少ない場合でも空気を静電霧化用ハウジング２内により多く導入することが可能となり、ミストＭの吐出量を確保することが可能となる。   According to a fourth aspect of the present invention, in the first to third aspects of the invention, the air flowing through the air flow path 3 on the outer surface side of the suction port 21 of the electrostatic atomizing housing 2 is introduced into the electrostatic atomizing housing 2. An introduction guide portion 27 for introduction is provided. By adopting such a configuration, even when the air flowing through the air flow path 3 is small, it becomes possible to introduce more air into the electrostatic atomizing housing 2 and to ensure the discharge amount of the mist M. It becomes.

また、請求項５の発明は、請求項１乃至４の発明において、静電霧化用ハウジング２の下流側の壁面部の霧化電極１１と同軸上の部分に吐出口２２を形成し、静電霧化用ハウジング２内の吸入口２１よりも下流側の部位から吐出口２２にかけて吐出口２２側ほど小径となるテーパガイド部２８を設けて成ることを特徴とするものである。このような構成とすることで、静電霧化用ハウジング２の下流側の壁面部の吐出口２２が形成されていない部分に空気が当たって乱流が起こるのを抑えることができる。   According to a fifth aspect of the present invention, in the first to fourth aspects of the present invention, a discharge port 22 is formed in a portion coaxial with the atomizing electrode 11 on the downstream wall surface of the electrostatic atomizing housing 2, A taper guide portion 28 having a smaller diameter from the portion downstream of the suction port 21 in the electromisting housing 2 to the discharge port 22 toward the discharge port 22 is provided. By setting it as such a structure, it can suppress that a turbulent flow arises because air hits the part in which the discharge port 22 of the wall surface part of the downstream of the electrostatic atomization housing 2 is not formed.

また、請求項６の発明は、請求項１乃至５の発明において、霧化電極１１へ液体Ｌを毛細管現象により搬送する内径２ｍｍ以下の搬送部１２ｂを設けて成ることを特徴とするものである。このような構成とすることで、静電霧化用ハウジング２の吸入口２１から空気流路３を流れる空気を導入する際に空気の流れを妨げないようになり、より均一に静電霧化用ハウジング２内に空気を導入することが可能となる。   The invention of claim 6 is characterized in that, in the inventions of claims 1 to 5, a transport portion 12b having an inner diameter of 2 mm or less is provided to transport the liquid L to the atomizing electrode 11 by capillary action. . By adopting such a configuration, when introducing the air flowing through the air flow path 3 from the suction port 21 of the electrostatic atomizing housing 2, the air flow is not hindered, and the electrostatic atomization is more uniformly performed. It becomes possible to introduce air into the housing 2.

また、請求項７の発明は、請求項１乃至６の発明において、空気流路３の送風装置４の下流側に加熱装置５を設ける静電霧化装置であって、静電霧化用ハウジング２内に導入する空気を加熱装置５よりも上流側より分岐して成ることを特徴とするものである。このような構成とすることで、静電霧化用ハウジング２内に加熱された空気が導入されて霧化電極１１の先端部１１ａの液体Ｌや静電霧化されたミストＭが蒸発してしまうことを防止し、ミストＭの吐出量が減少するのを防止することが可能となる。   A seventh aspect of the present invention is the electrostatic atomization device according to any one of the first to sixth aspects, wherein the heating device 5 is provided on the downstream side of the air blower 4 in the air flow path 3, and the electrostatic atomization housing is provided. The air introduced into the air 2 is branched from the upstream side of the heating device 5. With such a configuration, heated air is introduced into the electrostatic atomizing housing 2, and the liquid L and electrostatic atomized mist M at the tip 11 a of the atomizing electrode 11 are evaporated. It is possible to prevent the discharge amount of the mist M from being reduced.

本発明にあっては、吸入口及びテーパ部を設けるといった簡単な構成によって、液体や電力の消費量が増大したりオゾンの発生量が増量しないと共に静電霧化装置の大型化やコストアップを招くことなく、静電霧化用ハウジング内に適度な空気の流れが形成されて、霧化電極の先端部で生成されるミストが対向電極に吸着されることなく吐出口から効率良く吐出されることとなって、静電霧化装置からのミストの飛散量を増加させることが可能となる。   In the present invention, the simple configuration of providing the suction port and the tapered portion does not increase the consumption of liquid or electric power, increase the generation amount of ozone, and increase the size and cost of the electrostatic atomizer. Without incurring, a moderate air flow is formed in the electrostatic atomization housing, and the mist generated at the tip of the atomization electrode is efficiently discharged from the discharge port without being adsorbed by the counter electrode. Thus, the amount of mist scattered from the electrostatic atomizer can be increased.

以下、本発明の実施の形態について図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１に本発明の静電霧化装置の基本構成の概略図を示す。静電霧化装置の空気流路３を形成する空気流路ハウジング３０は、一端部に空気を吸入する吸入開口３１を形成すると共に他端部に空気を吐出する吐出開口３２を形成した略筒状のものであり、吸入開口３１から吐出開口３２までの空間が空気流路３となる。なお、空気流路ハウジング３０の形状は略筒状に限定されず、また、静電霧化装置の外殻ケーシングが空気流路ハウジング３０となっていてもよい。   FIG. 1 shows a schematic diagram of the basic configuration of the electrostatic atomizer of the present invention. The air flow path housing 30 forming the air flow path 3 of the electrostatic atomizer has a substantially cylindrical shape in which a suction opening 31 for sucking air is formed at one end and a discharge opening 32 for discharging air is formed at the other end. The space from the suction opening 31 to the discharge opening 32 is the air flow path 3. The shape of the air flow path housing 30 is not limited to a substantially cylindrical shape, and the outer shell casing of the electrostatic atomizer may be the air flow path housing 30.

空気流路３には、上流側の端部すなわち吸入開口３１の近傍に送風ファン４１及びモーター等の駆動部４２からなる送風装置４が配設してあり、外部の空気を吸入開口３１より空気流路ハウジング３０内に吸入すると共に吐出開口３２から吐出可能となっている。そして、空気流路３の前記送風装置４の下流側に静電霧化部１が配設してある。   In the air flow path 3, an air blower 4 including a blower fan 41 and a drive unit 42 such as a motor is disposed in the vicinity of the upstream end, that is, in the vicinity of the suction opening 31. The air can be sucked into the flow path housing 30 and discharged from the discharge opening 32. And the electrostatic atomization part 1 is arrange | positioned in the downstream of the said air blower 4 of the air flow path 3. As shown in FIG.

静電霧化部１は、霧化電極１１と、液体供給手段１２と、対向電極１３と、電圧印加部１４とで主体が構成され、霧化電極１１と対向電極１３とは静電霧化用ハウジング２に収納される。なお、図１に示すように静電霧化用ハウジング２の上流側に液体供給手段１２のタンク部１２ａと電圧印加部１４とを一体に設けてもよいし、図７に示すようにタンク部１２ａを静電霧化用ハウジング２とは別に設けてもよい。   The electrostatic atomization unit 1 is mainly composed of an atomization electrode 11, a liquid supply means 12, a counter electrode 13, and a voltage application unit 14, and the atomization electrode 11 and the counter electrode 13 are electrostatic atomization. Housed in the housing 2. As shown in FIG. 1, the tank portion 12a of the liquid supply means 12 and the voltage applying portion 14 may be provided integrally on the upstream side of the electrostatic atomizing housing 2, or the tank portion as shown in FIG. You may provide 12a separately from the housing 2 for electrostatic atomization.

静電霧化用ハウジング２は、略円筒状をして内部に空気の流路となる空間２０が形成されてこの空間２０に霧化電極１１と対向電極１３とを収納するもので、その円筒の軸方向が前記空気流路３内の空気の流れ方向に沿うように配置される。静電霧化用ハウジング２内の空間２０の前記空気流路３の上流側の内壁面２３には、下流側ほど小径となるテーパ部２５が設けてある。このテーパ部２５は略円錐形状をしていてその中央部がテーパ部２５の下流側の端部である頂部となっており、この頂部から霧化電極１１が突出する状態となっている。テーパ部２５の長さ（空気流路３の流れ方向の長さ）は、静電霧化用ハウジング２の上流側の内壁面２３からの霧化電極１１の突出長さの８０％以下とするのがよく、これにより霧化電極１１の先端部１１ａへの電界集中に影響を及ぼして放電が起こり難くなるのを抑えることができる。また、テーパ部２５を帯電し難い材料、すなわち帯電したミストＭが付着し難い材料で形成することで、テーパ部２５の長さを霧化電極１１の突出長さの８０％以上とすることが可能となる。   The electrostatic atomizing housing 2 has a substantially cylindrical shape, and a space 20 serving as an air flow path is formed therein, and the atomizing electrode 11 and the counter electrode 13 are accommodated in the space 20. Are arranged so that the axial direction of the air flows along the air flow direction in the air flow path 3. The inner wall surface 23 on the upstream side of the air flow path 3 in the space 20 in the electrostatic atomizing housing 2 is provided with a tapered portion 25 having a smaller diameter toward the downstream side. The tapered portion 25 has a substantially conical shape, and a central portion thereof is a top portion which is an end portion on the downstream side of the tapered portion 25, and the atomizing electrode 11 protrudes from the top portion. The length of the taper portion 25 (the length of the air flow path 3 in the flow direction) is 80% or less of the protruding length of the atomizing electrode 11 from the inner wall surface 23 on the upstream side of the electrostatic atomizing housing 2. Therefore, it is possible to prevent the electric field from concentrating on the tip portion 11a of the atomizing electrode 11 and thereby making it difficult for the discharge to occur. Further, by forming the taper portion 25 with a material that is difficult to be charged, that is, a material that is difficult to be charged with the mist M, the length of the taper portion 25 may be 80% or more of the protruding length of the atomizing electrode 11. It becomes possible.

霧化電極１１は、先端部で液体Ｌを静電霧化してミストＭを生成するための針状又は棒状をした多孔質材や内部に液体Ｌの搬送路を形成した部材からなり、液体Ｌを毛細管現象によって先端部に搬送供給することが可能となっている。そして、霧化電極１１の先端部１１ａの下流側に対向電極１３が配設される。   The atomizing electrode 11 is composed of a needle-shaped or rod-shaped porous material for electrostatically atomizing the liquid L at the tip portion to generate the mist M, or a member having a liquid L conveying path formed therein, and the liquid L Can be conveyed and supplied to the tip by capillary action. And the counter electrode 13 is arrange | positioned in the downstream of the front-end | tip part 11a of the atomization electrode 11. FIG.

対向電極１３は、カーボンのような導電材を混入した合成樹脂やＳＵＳのような金属からなる略円環状をしたもので、静電霧化用ハウジング２内の空間２０の下流側の端部に配置される。図１に示す実施形態では、対向電極１３が略円筒状をした静電霧化用ハウジング２の下流側の壁部となると共に、対向電極１３の中央の孔が静電霧化用ハウジング２内の空間２０からの吐出口２２となっている。吐出口２２は、内径がφ３乃至１０ｍｍ程度とするのが好ましく、これにより指や金属片等の異物の挿入がされ難くなり、感電したり漏電したりするのが防止されると共に、異物の挿入によって空気の流れが乱されることがなくミストＭを効率良く吐出することが可能となる。   The counter electrode 13 has a substantially annular shape made of a synthetic resin mixed with a conductive material such as carbon or a metal such as SUS, and is disposed at the downstream end of the space 20 in the electrostatic atomizing housing 2. Be placed. In the embodiment shown in FIG. 1, the counter electrode 13 becomes a downstream wall portion of the electrostatic atomizing housing 2 having a substantially cylindrical shape, and the central hole of the counter electrode 13 is in the electrostatic atomizing housing 2. The discharge port 22 from the space 20 is formed. The discharge port 22 preferably has an inner diameter of about φ3 to 10 mm, which makes it difficult to insert foreign objects such as fingers and metal pieces, prevents electric shocks and leakage, and inserts foreign objects. Thus, the mist M can be discharged efficiently without disturbing the air flow.

そして本発明においては、静電霧化用ハウジング２内の空間２０への吸入口２１が形成してある。この吸入口２１は、略円筒状をした静電霧化用ハウジング２の側壁部２４に形成されるもので、その位置は、空気流路３の流れ方向において、静電霧化用ハウジング２の空間２０の上流側の内壁面２３（テーパ部２５の基端部）と略同じ部位から霧化電極１１の先端部１１ａ又はそれよりも上流側の部位にかけて形成してある。本実施形態では、静電霧化用ハウジング２の側壁部２４の流れ方向と直交する方向の全周（つまり略円筒状をした側壁部２４の全周）に２個（１８０°間隔）、３個（１２０°間隔）、４個（９０°間隔）、５個（７２度間隔）等、複数個の吸入口２１を略等間隔に形成してあり、更に、吸入口２１の形状を流れ方向の長さが２乃至１０ｍｍの角形状となるように形成してある。   In the present invention, an inlet 21 to the space 20 in the electrostatic atomizing housing 2 is formed. The suction port 21 is formed in the side wall portion 24 of the electrostatic atomizing housing 2 having a substantially cylindrical shape, and the position thereof is the position of the electrostatic atomizing housing 2 in the flow direction of the air flow path 3. It is formed from substantially the same site as the inner wall surface 23 on the upstream side of the space 20 (the base end portion of the taper portion 25) to the distal end portion 11a of the atomizing electrode 11 or a site upstream thereof. In the present embodiment, two (180 ° intervals) on the entire circumference in the direction orthogonal to the flow direction of the side wall 24 of the housing 2 for electrostatic atomization (that is, the entire circumference of the side wall 24 having a substantially cylindrical shape), 3 A plurality of suction ports 21 such as four (120 ° intervals), four (90 ° intervals), five (72 ° intervals), etc. are formed at substantially equal intervals. Is formed in a square shape with a length of 2 to 10 mm.

また液体供給手段１２は、液体Ｌを溜めるタンク部１２ａと、タンク部１２ａから霧化電極１１へ液体Ｌを搬送する搬送部１２ｂとからなる。図１に示すように静電霧化用ハウジング２の上流側や下流側や側方に（図１では上流側に）液体供給手段１２のタンク部１２ａを一体に設けてもよいし、図７に示すようにタンク部１２ａを静電霧化用ハウジング２とは別に設けてもよい。図１中の１２ｃはタンク部１２ａ内へ液体Ｌを注入するための挿入口の蓋を示す。なお、図１に示す例の場合、霧化電極１１を長く形成して搬送部１２ｂと霧化電極１１の両方の機能を合わせ持つ搬送部兼霧化電極１１としてある。また、図７に示す例の場合、搬送部１２ｂとして、霧化電極１１へ液体Ｌを毛細管現象により搬送する内径φ２ｍｍ以下の断面円形状又は楕円形状をした搬送部１２ｂを設けてある。これにより、静電霧化用ハウジング２の吸入口２１から空気流路３を流れる空気を導入する際に空気の流れを妨げないようになり、より均一に静電霧化用ハウジング２内に空気を導入することが可能となる。   The liquid supply means 12 includes a tank unit 12 a that stores the liquid L, and a transport unit 12 b that transports the liquid L from the tank unit 12 a to the atomization electrode 11. As shown in FIG. 1, the tank part 12a of the liquid supply means 12 may be provided integrally on the upstream side, the downstream side, or the side of the electrostatic atomization housing 2 (on the upstream side in FIG. 1). As shown in FIG. 4, the tank portion 12a may be provided separately from the electrostatic atomizing housing 2. Reference numeral 12c in FIG. 1 denotes a cover of the insertion port for injecting the liquid L into the tank portion 12a. In the case of the example shown in FIG. 1, the atomizing electrode 11 is formed long and serves as the conveying unit and atomizing electrode 11 having both functions of the conveying unit 12 b and the atomizing electrode 11. In the case of the example shown in FIG. 7, as the transport unit 12 b, a transport unit 12 b having a circular or elliptical cross section with an inner diameter φ of 2 mm or less that transports the liquid L to the atomizing electrode 11 by capillary action is provided. Thereby, when introducing the air which flows through the air flow path 3 from the inlet 21 of the electrostatic atomizing housing 2, the air flow is not obstructed, and the air is more uniformly introduced into the electrostatic atomizing housing 2. Can be introduced.

またなお、液体供給手段１２としては、液体Ｌが水の場合、タンク部１２ａを設けるものではなく霧化電極１１の先端部１１ａに空気中の水分を付着させることができるもの、例えば吸湿剤を用いるものや、ペルチエ素子等の冷却手段を用いて霧化電極１１の先端部１１ａに水を結露させたりするものであってもよい。この場合、霧化電極１１の先端部１１ａへの水の搬送能力はタンク部１２ａから水を供給する場合よりも劣るため、霧化電極１１の先端部１１ａが空気の流れの中に位置しないようにする必要がある。   Further, as the liquid supply means 12, when the liquid L is water, the tank portion 12a is not provided, but the liquid supply means 12 can attach moisture in the air to the tip portion 11a of the atomizing electrode 11, for example, a hygroscopic agent. It may be used or water may be condensed on the tip 11a of the atomizing electrode 11 using a cooling means such as a Peltier element. In this case, since the capability of transporting water to the tip portion 11a of the atomizing electrode 11 is inferior to that when water is supplied from the tank portion 12a, the tip portion 11a of the atomizing electrode 11 is not positioned in the air flow. It is necessary to.

電圧印加部１４は、霧化電極１１と対向電極１３との間に高電圧を印加するもので、図１、図７に示すように静電霧化用ハウジング２の上流側に一体に設けてもよいし、特に図示しないが静電霧化用ハウジング２とは別に設けてもよい。   The voltage application unit 14 applies a high voltage between the atomization electrode 11 and the counter electrode 13, and is provided integrally on the upstream side of the electrostatic atomization housing 2 as shown in FIGS. Alternatively, although not particularly shown, it may be provided separately from the electrostatic atomizing housing 2.

次に、この静電霧化装置の動作について図１に示す例について説明する。   Next, the operation shown in FIG. 1 will be described with respect to the operation of the electrostatic atomizer.

霧化電極１１の先端部１１ａへは、液体供給手段１２により液体Ｌが供給される状態となっている。ここで、対向電極１３を接地すると共に霧化電極１１と対向電極１３との間に電圧印加部１４により数ｋＶの高電圧を印加すると、霧化電極１１の先端部１１ａの水が強い電界により大きなエネルギーを受けて分裂を繰り返すレイリー分裂を起こして、反応性に富む活性種を持ったナノメータサイズのミストＭが生成される静電霧化がなされる。電界は、霧化電極１１の先端部１１ａから対向電極１３に向けて形成され、また、ミストＭは静電霧化される際に帯電するため、霧化電極１１の先端部１１ａで生成したミストＭは電界より受ける静電気力によって異なる極性の対向電極１３の方へ移動する。   The liquid L is supplied by the liquid supply means 12 to the tip portion 11 a of the atomizing electrode 11. Here, when the counter electrode 13 is grounded and a high voltage of several kV is applied between the atomizing electrode 11 and the counter electrode 13 by the voltage applying unit 14, the water at the tip 11 a of the atomizing electrode 11 is caused by a strong electric field. Electrostatic atomization is performed in which Rayleigh splitting that repeats splitting by receiving large energy is generated, and nanometer-sized mist M having active species rich in reactivity is generated. The electric field is formed from the tip 11a of the atomizing electrode 11 toward the counter electrode 13, and the mist M is charged when electrostatic atomization is performed. Therefore, the mist generated at the tip 11a of the atomizing electrode 11 is generated. M moves toward the counter electrode 13 having a different polarity depending on the electrostatic force received from the electric field.

そして、送風装置４によって空気流路ハウジング３０の吸入開口３１より吸入されて空気流路３を空気が流れ、その空気のうちの一部が静電霧化用ハウジング２の吸入口２１より静電霧化用ハウジング２内に吸入される。吸入口２１より静電霧化用ハウジング２内に吸入された空気は、静電霧化用ハウジング２内方に向けて移動するが、静電霧化用ハウジング２内の上流側の内壁面２３に形成したテーパ部２５によって下流側へと向きが変わる。   Then, the air blower 4 sucks the air through the suction opening 31 of the air flow path housing 30 and air flows through the air flow path 3, and a part of the air is electrostatically discharged from the suction opening 21 of the electrostatic atomization housing 2. It is sucked into the atomizing housing 2. The air sucked into the electrostatic atomization housing 2 from the suction port 21 moves toward the inside of the electrostatic atomization housing 2, but the inner wall surface 23 on the upstream side in the electrostatic atomization housing 2. The direction is changed to the downstream side by the tapered portion 25 formed in the above.

そして、霧化電極１１の先端部１１ａで生成したミストＭは対向電極１３の方へ働く静電気力と空気の流れによって吐出口２２より効率良く吐出される（図イ参照）。   And the mist M produced | generated by the front-end | tip part 11a of the atomization electrode 11 is efficiently discharged from the discharge port 22 with the electrostatic force and air flow which work toward the counter electrode 13 (refer FIG. 1).

図２に静電霧化用ハウジング２に吸入口２１及びテーパ部２５を設ける場合の空気の流れの解析結果を、図３に静電霧化用ハウジング２に吸入口２１及びテーパ部２５を設けない場合の空気の流れの解析結果を示す。図３の吸入口２１及びテーパ部２５を設けない場合には、静電霧化用ハウジング２の吐出口２２より空気が逆流入して霧化電極１１の先端部１１ａのあたりでも空気が逆流しているが、図２の吸入口２１及びテーパ部２５を設ける場合には、吸入口２１より吸入された空気の流れはテーパ部２５にて下流方向へと向きを変え、その後はそのまま吐出口２２より吐出されており、空気が逆流したりすることがなく効率よく吐出口２２より吐出されていることが分かる。   FIG. 2 shows an analysis result of air flow when the suction port 21 and the taper portion 25 are provided in the electrostatic atomization housing 2, and FIG. 3 shows the suction port 21 and the taper portion 25 provided in the electrostatic atomization housing 2. The analysis result of the air flow when there is not is shown. When the suction port 21 and the taper portion 25 of FIG. 3 are not provided, air flows back from the discharge port 22 of the electrostatic atomizing housing 2 and the air flows back even around the tip portion 11 a of the atomizing electrode 11. However, when the suction port 21 and the taper portion 25 of FIG. 2 are provided, the flow of air sucked from the suction port 21 is changed in the downstream direction at the taper portion 25, and thereafter, the discharge port 22 is left as it is. It can be seen that the air is discharged more and the air is efficiently discharged from the discharge port 22 without backflow.

また図４に、送風装置４からの空気の流れが静電霧化部１（すなわち静電霧化用ハウジング２）を通過する際の空気の流速の大小によって、吐出口２２から吐出されるミストＭの粒子径別の吐出される個数の変化のグラフを示し、図５に、送風装置４からの空気の流れが静電霧化部１（すなわち静電霧化用ハウジング２）を通過する際の空気の流速の大小によって、吐出口２２から吐出されるミストＭの個数が変化するグラフを示す。計測にあたっては、ＤＭＡ（微分型粒子径計測装置）を用いて吐出されるミストＭの径および個数を計測した。図５より、静電霧化用ハウジング２を通過する空気流の速度が４（ｍ／ｓ）までは吐出口２２から吐出されるミストＭの個数が増加しているが、これは、空気流の速度が４（ｍ／ｓ）までは霧化電極１１の先端部１１ａで生成するミストＭが効率良く吐出されていなかったために空気流の速度の増加に伴ってミストＭが効率良く吐出されるようになるためで、空気流の速度が４（ｍ／ｓ）以上でミストＭの個数が上昇しないのは霧化電極１１の先端部１１ａで生成するミストＭ全てが効率良く吐出されているためと考えられる。   Further, FIG. 4 shows a mist discharged from the discharge port 22 depending on the flow velocity of the air when the air flow from the blower 4 passes through the electrostatic atomizer 1 (that is, the electrostatic atomization housing 2). FIG. 5 shows a graph of the change in the number of discharged particles for each particle size of M. FIG. 5 shows the flow of air from the blower 4 passing through the electrostatic atomizer 1 (that is, the electrostatic atomization housing 2). The graph which the number of mist M discharged from the discharge outlet 22 changes with the magnitude | sizes of the flow velocity of air is shown. In the measurement, the diameter and number of mists M discharged were measured using a DMA (differential particle size measuring device). From FIG. 5, the number of mists M discharged from the discharge ports 22 increases until the velocity of the air flow passing through the electrostatic atomizing housing 2 reaches 4 (m / s). Up to 4 (m / s), the mist M generated at the tip 11a of the atomizing electrode 11 was not efficiently discharged, so that the mist M is efficiently discharged as the air flow speed increases. Therefore, the reason why the number of mists M does not increase when the air flow speed is 4 (m / s) or more is because all the mists M generated at the tip 11a of the atomizing electrode 11 are discharged efficiently. it is conceivable that.

以上のように、静電霧化用ハウジング２内への空気の吸入口２１を設けることによって、静電霧化用ハウジング２内に空気の流れが形成されて、霧化電極１１の先端部１１ａで生成されたミストＭが吐出口２２から静電霧化用ハウジング２外へ効率良く吐出され、静電霧化装置からのミストＭの飛散量を増加させることができるものである。そして、吸入口２１を静電霧化用ハウジング２の側壁部２４の上記上流側の内壁面２３と空気流路３の流れ方向において略同じ部位から霧化電極１１の先端部１１ａ又はそれよりも上流側の部位にかけて形成したことで、霧化電極１１の先端部１１ａで乱流が発生するのを防止して空気が静電霧化用ハウジング２を通過する際の圧力損失を低減させることが可能となり、また、静電霧化用ハウジング２の上流側の内壁面２３に下流側ほど小径となるテーパ部２５を設けたことで、吸入口２１から静電霧化用ハウジング２内方へ吸入された空気の向きを下流側へとスムーズに変えることができて霧化電極１１の突出基部で乱流が発生するのを防止することができる。   As described above, by providing the air inlet 21 into the electrostatic atomizing housing 2, an air flow is formed in the electrostatic atomizing housing 2, and the tip portion 11 a of the atomizing electrode 11 is formed. The mist M generated in (1) is efficiently discharged from the discharge port 22 to the outside of the electrostatic atomization housing 2, and the amount of mist M scattered from the electrostatic atomizer can be increased. The inlet 21 is connected to the tip end portion 11a of the atomizing electrode 11 from the substantially same portion in the flow direction of the upstream inner wall surface 23 of the side wall portion 24 of the electrostatic atomizing housing 2 and the air flow path 3, or more than that. By forming over the upstream portion, it is possible to prevent the turbulent flow from occurring at the tip 11a of the atomizing electrode 11 and reduce the pressure loss when the air passes through the electrostatic atomizing housing 2. In addition, the tapered inner wall 23 on the upstream side of the electrostatic atomizing housing 2 is provided with a taper portion 25 having a smaller diameter toward the downstream side, so that suction from the suction port 21 to the inside of the electrostatic atomizing housing 2 is possible. The direction of the generated air can be smoothly changed to the downstream side, and turbulent flow can be prevented from occurring at the protruding base portion of the atomizing electrode 11.

また、この静電霧化装置において、静電霧化用ハウジング２の側壁部２４の全周に複数の吸入口２１を略等間隔に形成し、吸入口２１の形状を流れ方向の長さが２乃至１０ｍｍの角形状とすれば、静電霧化用ハウジング２の全周から中心に向かって対称に吸入された空気がテーパ部２５によって向きをちょうど下流方向へと変えることが可能となる。   Further, in this electrostatic atomizer, a plurality of suction ports 21 are formed at substantially equal intervals on the entire circumference of the side wall portion 24 of the electrostatic atomization housing 2, and the shape of the suction ports 21 has a length in the flow direction. If the square shape is 2 to 10 mm, the air sucked symmetrically from the entire circumference of the electrostatic atomizing housing 2 toward the center can be changed in the direction just downstream by the taper portion 25.

また、静電霧化用ハウジング２の吐出口２２に指や金属片等の異物が挿入されるのを防止する異物侵入防止部材２６を設けてもよい。これは、図６に示すように、静電霧化用ハウジング２の下流側の端部に取り付けるもので、静電霧化用ハウジング２の吐出口２２よりも小さい径（例えばφ３乃至１０ｍｍ）の吐出口２２となる開口を形成したり、あるいは異物侵入防止部材２６の吐出口２２となる開口に格子部材（図示せず）を設けたものであってもよい。この場合、格子部材はシリコン系、有機ホウ素系、高分子型の樹脂系等の帯電し難い材料で形成したり、あるいは、格子部材を接地したり電圧印加部１４による印加電圧よりも十分に低い電圧が印加されるようにして格子部材が帯電するのを抑えるのが良く、また、空気の流れを遮らないようにすると共に強度を確保するため、格子の幅を例えば１〜２ｍｍとするのが良い。異物侵入防止部材２６を設けることで、指や金属片等の異物が挿入されて感電したり漏電したりするのを防止すると共に、異物の挿入によって空気の流れが乱されることがなくミストＭを効率良く吐出することが可能となる。   Further, a foreign matter intrusion preventing member 26 that prevents foreign matters such as fingers and metal pieces from being inserted into the discharge port 22 of the electrostatic atomizing housing 2 may be provided. As shown in FIG. 6, this is attached to the downstream end of the electrostatic atomizing housing 2 and has a smaller diameter (for example, φ3 to 10 mm) than the discharge port 22 of the electrostatic atomizing housing 2. An opening serving as the discharge port 22 may be formed, or a lattice member (not shown) may be provided in the opening serving as the discharge port 22 of the foreign matter intrusion prevention member 26. In this case, the lattice member is formed of a material that is not easily charged, such as a silicon-based, organic boron-based, or polymer-based resin, or the lattice member is grounded or sufficiently lower than the voltage applied by the voltage application unit 14 It is good to suppress the grid member from being charged by applying a voltage, and the width of the grid is set to, for example, 1 to 2 mm so as not to block the air flow and to ensure strength. good. By providing the foreign matter intrusion prevention member 26, it is possible to prevent a foreign matter such as a finger or a metal piece from being inserted to cause an electric shock or leakage, and the air flow is not disturbed by the insertion of the foreign matter. Can be efficiently discharged.

また、図１に示す例では、対向電極１３が静電霧化用ハウジング２内の空間２０の下流側の内壁面となってその中央孔が吐出口２２となっているが、図６に示すように上記異物侵入防止部材２６を設ける場合、前記異物侵入防止部材２６の吐出口２２と対向電極１３の中央孔とは例えばφ８の略同じ大きさか若干異なる大きさに形成したりするのがよい。そして、図１のように吸入口２１を静電霧化用ハウジング２の側壁部２４に形成している場合、吸入口２１より吸入された空気は静電霧化用ハウジング２内で中央部に集中して流れるため吐出口２２をより小さくするのがよい。また、図示しないが吸入口２１を静電霧化用ハウジング２の上流側の内壁面２３に形成するような場合には、吸入口２１より吸入された空気は静電霧化用ハウジング２内で広がるため吐出口２２をより大きくするのがよい。   In the example shown in FIG. 1, the counter electrode 13 serves as an inner wall surface on the downstream side of the space 20 in the electrostatic atomizing housing 2, and the central hole serves as the discharge port 22. When the foreign matter intrusion prevention member 26 is provided as described above, the discharge port 22 of the foreign matter intrusion prevention member 26 and the central hole of the counter electrode 13 are preferably formed to have substantially the same size of φ8 or slightly different sizes, for example. . When the suction port 21 is formed in the side wall portion 24 of the electrostatic atomization housing 2 as shown in FIG. 1, the air sucked from the suction port 21 is centrally located in the electrostatic atomization housing 2. It is better to make the discharge port 22 smaller because it flows in a concentrated manner. Although not shown, when the suction port 21 is formed in the inner wall surface 23 on the upstream side of the electrostatic atomization housing 2, the air sucked from the suction port 21 is contained in the electrostatic atomization housing 2. In order to expand, it is preferable to make the discharge port 22 larger.

次に、図７に示す例について説明する。本例では、静電霧化用ハウジング２の外面の吸入口２１の近傍に、空気流路３を流れる空気を静電霧化用ハウジング２内へ導入するための導入ガイド部２７を設けてある。導入ガイド部２７は、静電霧化用ハウジング２の外面の吸入口２１の下流側の端部から上流側ほど外方に離れるように傾斜している。これにより、空気流路３を流れる空気が少ない場合でも空気を静電霧化用ハウジング２内により多く導入することが可能となり、ミストＭの吐出量を確保することが可能となる。   Next, the example shown in FIG. 7 will be described. In this example, an introduction guide portion 27 for introducing the air flowing through the air flow path 3 into the electrostatic atomization housing 2 is provided in the vicinity of the suction port 21 on the outer surface of the electrostatic atomization housing 2. . The introduction guide portion 27 is inclined so as to be separated outward from the downstream end of the suction port 21 on the outer surface of the electrostatic atomizing housing 2 toward the upstream side. As a result, even when the amount of air flowing through the air flow path 3 is small, it becomes possible to introduce more air into the electrostatic atomizing housing 2 and to secure the discharge amount of the mist M.

また、静電霧化用ハウジング２内の吸入口２１よりも下流側の部位から吐出口２２にかけて吐出口２２側ほど小径となるテーパガイド部２８を設けてある。これにより、静電霧化用ハウジング２の下流側の壁面部の吐出口２２が形成されていない部分に空気が当たって乱流が起こるのを抑えることができる。   Further, a taper guide portion 28 having a smaller diameter from the portion downstream of the suction port 21 in the electrostatic atomizing housing 2 to the discharge port 22 toward the discharge port 22 is provided. Thereby, it is possible to suppress the occurrence of turbulent flow due to air hitting a portion of the wall surface portion on the downstream side of the electrostatic atomizing housing 2 where the discharge port 22 is not formed.

ところで、上記のような静電霧化装置を備えた製品としては、例えば空気清浄機や、ドライヤーが挙げられる。   By the way, as a product provided with the above electrostatic atomizer, an air cleaner and a dryer are mentioned, for example.

図８に、空気清浄機に上記静電霧化装置を設けたものを示す。外殻ケーシングが空気流路ハウジング３０となっており、空気流路３に配設した送風装置４によって吸入開口３１より空気が吸入される。空気流路３の送風装置４の上流側には、フィルター６１からなる空気清浄部６が配設してある。そして、空気流路３の送風装置４の下流側に、上記静電霧化装置が配設してある。そして、静電霧化装置の吐出口２２より吐出されたミストＭは空気清浄機の吐出開口３２より吐出され、このミストＭによって室内空気や、室内壁面等の付着物の脱臭を行うものである。   In FIG. 8, what provided the said electrostatic atomizer in the air cleaner is shown. The outer shell casing is an air flow path housing 30, and air is sucked from the suction opening 31 by the blower 4 disposed in the air flow path 3. On the upstream side of the air blower 4 in the air flow path 3, an air purifying unit 6 including a filter 61 is disposed. And the said electrostatic atomizer is arrange | positioned in the downstream of the air blower 4 of the air flow path 3. As shown in FIG. The mist M discharged from the discharge port 22 of the electrostatic atomizer is discharged from the discharge opening 32 of the air purifier, and the mist M deodorizes the indoor air and the deposits such as the indoor wall surface. .

図９に、ドライヤーに上記静電霧化装置を設けたものを示す。このものも外殻ケーシングが空気流路ハウジング３０となっており、空気流路３の上流側に配設した送風装置４によって吸入開口３１より空気が吸入される。そして、空気流路３は途中で静電霧化装置へと送られる空気流路３と、加熱装置５へと送られる空気流路３’とに分岐される。そして、それぞれの流路に静電霧化装置と加熱装置５とが配設されるが、その下流側では再び合流し、吐出開口３２よりミストＭが混入された温風が吐出される。   FIG. 9 shows a dryer provided with the electrostatic atomizer. Also in this case, the outer casing is an air flow path housing 30, and air is sucked from the suction opening 31 by the blower 4 disposed on the upstream side of the air flow path 3. The air flow path 3 is branched into an air flow path 3 sent to the electrostatic atomizer and an air flow path 3 ′ sent to the heating device 5. Then, the electrostatic atomizer and the heating device 5 are arranged in each flow path, but they merge again on the downstream side, and hot air mixed with mist M is discharged from the discharge opening 32.

この場合、静電霧化用ハウジング２内に導入する空気を加熱装置５よりも上流側より分岐するようにしたことで、加熱された空気が静電霧化用ハウジング２内に導入されて霧化電極１１の先端部１１ａの液体Ｌや静電霧化されたミストＭが蒸発してしまうことを防止し、ミストＭの吐出量が減少するのを防止することができるものである。   In this case, the air introduced into the electrostatic atomizing housing 2 is branched from the upstream side of the heating device 5, so that the heated air is introduced into the electrostatic atomizing housing 2 and is fogged. It is possible to prevent the liquid L and the electrostatic atomized mist M at the distal end portion 11a of the chemical electrode 11 from evaporating and prevent the discharge amount of the mist M from decreasing.

この時の空気の流れの解析結果を図１０に示す。これより、霧化電極１１の先端部１１ａに空気の逆流が発生していないことが分かる。   The analysis result of the air flow at this time is shown in FIG. From this, it can be seen that no backflow of air occurs at the tip portion 11 a of the atomizing electrode 11.

本発明の静電霧化装置の一実施形態の構成図である。It is a block diagram of one Embodiment of the electrostatic atomizer of this invention. 同上の静電霧化用ハウジングに吸入口及びテーパ部を設けた場合の空気の流れの解析結果をカラーで出力した図である。It is the figure which output the analysis result of the air flow at the time of providing an inlet and a taper part in the housing for electrostatic atomization same as the above. 静電霧化用ハウジングに吸入口及びテーパ部を設けない場合の空気の流れの解析結果をカラーで出力した図である。It is the figure which output the analysis result of the flow of the air when not providing an inlet and a taper part in the housing for electrostatic atomization in color. 静電霧化用ハウジングを通過する空気の流速毎の、吐出口から吐出されるミストの粒子径とその個数の変化のグラフである。It is a graph of the particle diameter of the mist discharged from a discharge outlet, and the change of the number for every flow velocity of the air which passes the housing for electrostatic atomization. 静電霧化用ハウジングを通過する空気の流速−吐出口から吐出されるミストの個数のグラフである。It is a graph of the number of mist discharged from the flow velocity of the air which passes through the housing for electrostatic atomization-discharge port. 同上の実施形態の異物侵入防止部材を設けた静電霧化用ハウジングを示し、（ａ）は斜視図であり、（ｂ）は断面図である。The housing for electrostatic atomization which provided the foreign material penetration | invasion prevention member of embodiment same as the above is shown, (a) is a perspective view, (b) is sectional drawing. 本発明の静電霧化装置の他例の構成図である。It is a block diagram of the other example of the electrostatic atomizer of this invention. 本発明の静電霧化装置を設けた空気清浄機の断面図である。It is sectional drawing of the air cleaner which provided the electrostatic atomizer of this invention. 本発明の静電霧化装置を設けたドライヤーの平面断面図である。It is a plane sectional view of a drier provided with the electrostatic atomizer of the present invention. 同上の静電霧化装置を設けた付近の空気の流れの解析結果をカラーで出力した図を示し、（ａ）は側断面図であり、（ｂ）は正面断面図である。The figure which output the analysis result of the air flow of the vicinity which provided the electrostatic atomizer same as the above by the color is shown, (a) is a sectional side view, (b) is a front sectional view.

符号の説明Explanation of symbols

１ 静電霧化部
１１ 霧化電極
１１ａ 先端部
１２ 液体供給手段
１３ 対向電極
１４ 電圧印加部
２ 静電霧化用ハウジング
２１ 吸入口
２２ 吐出口
２３ 上流側の内壁面
２４ 側壁部
２５ テーパ部
３ 空気流路
４ 送風装置
Ｌ 液体
Ｍ ミスト
DESCRIPTION OF SYMBOLS 1 Electrostatic atomization part 11 Atomization electrode 11a Front-end | tip part 12 Liquid supply means 13 Counter electrode 14 Voltage application part 2 Electrostatic atomization housing 21 Intake port 22 Outlet 23 Inner wall surface 24 of an upstream side Side wall part 25 Tapered part 3 Air channel 4 Blower L Liquid M Mist

Claims (7)

静電霧化部として、先端部で液体を静電霧化してミストを生成するための針状又は棒状をした霧化電極と、前記霧化電極の先端部に液体を供給する液体供給手段と、前記霧化電極の先端部に対向するように配置される対向電極と、前記霧化電極と対向電極との間に高電圧を印加する電圧印加部とを備え、霧化電極と対向電極とを静電霧化用ハウジングに収納すると共に、霧化電極の先端部で生成して静電気力により対向電極の方へ移動するミストの静電霧化用ハウジングからの吐出口を対向電極の近傍に設け、前記静電霧化用ハウジングを送風装置を備えた空気流路内に配設した静電霧化装置において、霧化電極を静電霧化用ハウジングの前記空気流路の流れ方向の上流側の内壁面から下流側に向けて突出させると共に該霧化電極よりも下流側に対向電極を配置し、静電霧化用ハウジング内への空気の吸入口を、静電霧化用ハウジングの側壁部の前記上流側の内壁面と空気流路の流れ方向において略同じ部位から霧化電極の先端部又はそれよりも上流側の部位にかけて形成し、霧化電極を突出させる前記上流側の内壁面に下流側ほど小径となるテーパ部を設けて成ることを特徴とする静電霧化装置。   As an electrostatic atomization unit, a needle-like or rod-like atomization electrode for generating a mist by electrostatically atomizing a liquid at the tip, and a liquid supply means for supplying liquid to the tip of the atomization electrode A counter electrode arranged to face the tip of the atomization electrode, and a voltage application unit for applying a high voltage between the atomization electrode and the counter electrode, the atomization electrode and the counter electrode, In the electrostatic atomization housing, and the discharge port from the electrostatic atomization housing of the mist that is generated at the tip of the atomization electrode and moves toward the counter electrode by electrostatic force is in the vicinity of the counter electrode. An electrostatic atomization device in which the electrostatic atomization housing is disposed in an air flow path provided with a blower, and the atomization electrode is arranged upstream of the flow direction of the air flow path of the electrostatic atomization housing. Projecting from the inner wall surface on the downstream side toward the downstream side and downstream from the atomizing electrode The suction electrode for the air into the electrostatic atomizing housing is disposed from substantially the same portion in the flow direction of the upstream inner wall surface of the electrostatic atomizing housing and the air flow path. It is formed over the tip portion of the atomizing electrode or a portion upstream thereof, and a taper portion having a smaller diameter toward the downstream side is provided on the inner wall surface on the upstream side from which the atomizing electrode protrudes. Atomization device. 静電霧化用ハウジングの側壁部の流れ方向と直交する方向の全周に複数の吸入口を略等間隔に形成し、前記吸入口の形状を流れ方向の長さが２乃至１０ｍｍの角形状として成ることを特徴とする請求項１記載の静電霧化装置。   A plurality of suction ports are formed at substantially equal intervals in the entire circumference in a direction orthogonal to the flow direction of the side wall portion of the electrostatic atomizing housing, and the shape of the suction port is a square shape having a length in the flow direction of 2 to 10 mm. The electrostatic atomizer according to claim 1, wherein 静電霧化用ハウジングの下流側の霧化電極と同軸上の部分に位置する直径３乃至１０ｍｍの吐出口を有する感電又は漏電を防止するための異物侵入防止部材を設けて成ることを特徴とする請求項１又は２記載の静電霧化装置。   A foreign matter intrusion prevention member for preventing an electric shock or leakage having a discharge port having a diameter of 3 to 10 mm located on a portion coaxial with the atomizing electrode on the downstream side of the electrostatic atomizing housing is provided. The electrostatic atomizer of Claim 1 or 2 to do. 静電霧化用ハウジングの吸入口の外面側に空気流路を流れる空気を静電霧化用ハウジング内へ導入するための導入ガイド部を設けて成ることを特徴とする請求項１乃至３のいずれかに記載の静電霧化装置。   The introduction guide part for introducing the air which flows through an air flow path into the housing for electrostatic atomization is provided in the outer surface side of the suction inlet of the housing for electrostatic atomization of Claim 1 thru | or 3 characterized by the above-mentioned. The electrostatic atomizer in any one. 静電霧化用ハウジングの下流側の壁面部の霧化電極と同軸上の部分に吐出口を形成し、静電霧化用ハウジング内の吸入口よりも下流側の部位から吐出口にかけて吐出口側ほど小径となるテーパガイド部を設けて成ることを特徴とする請求項１乃至４のいずれかに記載の静電霧化装置。   A discharge port is formed in a portion coaxial with the atomization electrode on the wall surface on the downstream side of the electrostatic atomization housing, and the discharge port extends from a portion downstream of the suction port in the electrostatic atomization housing to the discharge port. The electrostatic atomizer according to any one of claims 1 to 4, wherein a taper guide portion having a smaller diameter toward the side is provided. 霧化電極へ液体を毛細管現象により搬送する内径２ｍｍ以下の搬送部を設けて成ることを特徴とする請求項１乃至５のいずれかに記載の静電霧化装置。   The electrostatic atomizer according to any one of claims 1 to 5, further comprising a transport unit having an inner diameter of 2 mm or less that transports the liquid to the atomization electrode by capillary action. 空気流路の送風装置の下流側に加熱装置を設ける静電霧化装置であって、静電霧化用ハウジング内に導入する空気を加熱装置よりも上流側より分岐して成ることを特徴とする請求項１乃至６のいずれかに記載の静電霧化装置。   An electrostatic atomizing device provided with a heating device on the downstream side of a blower of an air flow path, characterized in that the air introduced into the electrostatic atomizing housing is branched from the upstream side of the heating device. The electrostatic atomizer according to any one of claims 1 to 6.
JP2005022167A 2004-09-27 2005-01-28 Electrostatic atomizer Expired - Fee Related JP4475126B2 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
JP2005022167A JP4475126B2 (en) 2005-01-28 2005-01-28 Electrostatic atomizer
KR1020050088048A KR100707845B1 (en) 2004-09-27 2005-09-22 Electrostatic atomizing hairdryer
US11/234,173 US7350317B2 (en) 2004-09-27 2005-09-26 Electrostatic atomizing hairdryer and electrostatic atomizer
DE602005019713T DE602005019713D1 (en) 2004-09-27 2005-09-27 Electrostatic atomizer
EP06023389A EP1745716B1 (en) 2004-09-27 2005-09-27 Electrostatic atomizer
AT06023389T ATE459426T1 (en) 2004-09-27 2005-09-27 ELECTROSTATIC ATOMIZER
DE602005019359T DE602005019359D1 (en) 2004-09-27 2005-09-27 Hairdryer with electrostatic atomization
EP05256010A EP1639910B1 (en) 2004-09-27 2005-09-27 Electrostatic atomizing hairdryer
AT05256010T ATE457663T1 (en) 2004-09-27 2005-09-27 HAIR DRYER WITH ELECTROSTATIC ATOMIZATION
CNB2005101064529A CN100425178C (en) 2004-09-27 2005-09-27 Electrostatic atomizing hairdryer and electrostatic atomizer
CN2007101995695A CN101172270B (en) 2004-09-27 2005-09-27 Electrostatic atomization device
HK06105657.7A HK1085628A1 (en) 2004-09-27 2006-05-16 Electrostatic atomization hair drier and electrostatic atomization device
KR1020060125455A KR100707846B1 (en) 2004-09-27 2006-12-11 Electrostatic atomizer

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