JP4877173B2 - Electrostatic atomizer and heated air blower equipped with the same - Google Patents

Electrostatic atomizer and heated air blower equipped with the same Download PDF

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JP4877173B2
JP4877173B2 JP2007245436A JP2007245436A JP4877173B2 JP 4877173 B2 JP4877173 B2 JP 4877173B2 JP 2007245436 A JP2007245436 A JP 2007245436A JP 2007245436 A JP2007245436 A JP 2007245436A JP 4877173 B2 JP4877173 B2 JP 4877173B2
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ground electrode
discharge electrode
electrode
electrostatic atomizer
discharge
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JP2009072721A (en
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英俊 仲宗根
至 齋田
博光 宮田
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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 JP2007245436A priority Critical patent/JP4877173B2/en
Priority to PCT/JP2008/065324 priority patent/WO2009037946A1/en
Priority to CN200880107480A priority patent/CN101801537A/en
Priority to TW97135483A priority patent/TW200924853A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/001—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means incorporating means for heating or cooling, e.g. the material to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/005—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means the high voltage supplied to an electrostatic spraying apparatus being adjustable during spraying operation, e.g. for modifying spray width, droplet size
    • B05B5/006—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means the high voltage supplied to an electrostatic spraying apparatus being adjustable during spraying operation, e.g. for modifying spray width, droplet size the adjustement of high voltage is responsive to a condition, e.g. a condition of material discharged, of ambient medium or of target
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/0255—Discharge apparatus, e.g. electrostatic spray guns spraying and depositing by electrostatic forces only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0531—Power generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/053—Arrangements for supplying power, e.g. charging power
    • B05B5/0533—Electrodes specially adapted therefor; Arrangements of electrodes
    • B05B5/0536—Dimensional characteristics of electrodes, e.g. diameter or radius of curvature of a needle-like corona electrode
    • 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

Description

本発明は、静電霧化装置およびそれを備えた加熱送風装置に関する。   The present invention relates to an electrostatic atomizer and a heated air blower including the same.

従来、静電霧化装置として、先端が鋭利な形状をした放電極と平板状のグランド電極とを備え、当該放電極とグランド電極との間に電圧を印加して両電極間に電界を形成することで、放電極の先端に供給された液体を帯電、***させてナノメータサイズで電荷を有する液体微粒子を生成し、グランド電極に形成される電界と帯電した液体微粒子との間に働くクーロン力を利用してグランド電極に向けて飛翔させるものが知られている（例えば、特許文献１参照）。   Conventionally, as an electrostatic atomizer, a discharge electrode having a sharp tip and a flat ground electrode are provided, and a voltage is applied between the discharge electrode and the ground electrode to form an electric field between the electrodes. As a result, the liquid supplied to the tip of the discharge electrode is charged and split to generate liquid fine particles having a charge of nanometer size, and the Coulomb force acting between the electric field formed on the ground electrode and the charged liquid fine particles Is known to fly toward the ground electrode by using (see, for example, Patent Document 1).

ところで、ナノメータサイズの液体微粒子は、放電極とグランド電極とで形成される電界を大きくするほど多量に形成されることが知られている（図４参照）。   By the way, it is known that nanometer-sized liquid fine particles are formed in a larger amount as the electric field formed by the discharge electrode and the ground electrode is increased (see FIG. 4).

そのため、より多くの液体微粒子を生成させるためには、放電極とグランド電極の間に高電界を発生させる必要がある。
特開平１１−３００９７５号公報 Therefore, in order to generate more liquid fine particles, it is necessary to generate a high electric field between the discharge electrode and the ground electrode.
JP-A-11-300975

しかしながら、上記従来技術では、端部に略直角の角部を有する平板状のグランド電極を用いているため、放電極とグランド電極との間に電圧を印可して両電極間に電界を形成すると当該角部に電界集中が生じてしまう。そのため、放電極とグランド電極の間に高電界を発生させた場合には、隣接する電極間にリーク電流が発生するおそれがあるため、放電極とグランド電極との間の電界強度を高めることが難しかった。   However, in the above prior art, since a flat ground electrode having a corner portion substantially perpendicular to the end is used, a voltage is applied between the discharge electrode and the ground electrode to form an electric field between both electrodes. Electric field concentration occurs at the corner. Therefore, when a high electric field is generated between the discharge electrode and the ground electrode, a leak current may be generated between adjacent electrodes, so that the electric field strength between the discharge electrode and the ground electrode can be increased. was difficult.

そこで、本発明は、ナノメータサイズの液体微粒子をより多量に生成することのできる静電霧化装置およびそれを備えた加熱送風装置を得ることを目的とする。   Then, an object of this invention is to obtain the electrostatic atomizer which can produce | generate a liquid microparticle of nanometer size more, and a heating air blower provided with the same.

請求項１の発明にあっては、放電極とグランド電極とを備え、当該放電極とグランド電極との間に電圧を印加することで放電極に供給される液体を霧化させる静電霧化装置であって、前記グランド電極の端部に、角を丸めた曲面部が形成され、前記曲面部は、前記グランド電極の前記放電極側の端部に、断面視で放電極側に凸状に形成され、前記グランド電極は、略円形断面を有するワイヤ状部材であり、前記ワイヤ状部材は、平面視で前記放電極を略中心とする略円環状に形成されていることを特徴とする。 In the invention of claim 1, an electrostatic atomization comprising a discharge electrode and a ground electrode, wherein the liquid supplied to the discharge electrode is atomized by applying a voltage between the discharge electrode and the ground electrode. In the apparatus, a curved surface portion with rounded corners is formed at an end portion of the ground electrode, and the curved surface portion is convex on the discharge electrode side end portion of the ground electrode in a sectional view. The ground electrode is a wire-like member having a substantially circular cross section, and the wire-like member is formed in a substantially annular shape having the discharge electrode as a center in plan view. .

請求項２の発明にあっては、請求項１または請求項２に記載の静電霧化装置において、前記曲面部は、断面視で、前記グランド電極の前記放電極側の面から放電極側の面の反対側の面にかけて略半円弧状に形成されていることを特徴とする。 According to a second aspect of the present invention, in the electrostatic atomizer according to the first or second aspect, the curved surface portion is, in a sectional view, from the surface on the discharge electrode side of the ground electrode to the discharge electrode side. It is characterized by being formed in a substantially semicircular arc shape over the surface on the opposite side of the surface.

請求項３の発明にあっては、請求項１又は２に記載の静電霧化装置において、前記グランド電極は、平面視で前記放電極を略中心とするとともに、前記グランド電極の前記放電極側の端部を外周とする略円形の開口部が設けられていることを特徴とする。 According to a third aspect of the present invention, in the electrostatic atomizer according to the first or second aspect, the ground electrode is substantially centered on the discharge electrode in plan view, and the discharge electrode of the ground electrode. A substantially circular opening having an end on the side as an outer periphery is provided.

請求項４の発明にあっては、加熱送風装置において、請求項１〜３のうちいずれか１項に記載の静電霧化装置を備えることを特徴とする。 In the invention of claim 4 is the hot air blower, characterized in that it comprises an electrostatic atomization device according to any one of claims 1-3.

請求項１の発明によれば、グランド電極の端部に角を丸めた曲面部を形成することで、グランド電極の端部にエッジ部分がなくなり、グランド電極に局所的に電界集中が生じることを緩和させることができる。   According to the invention of claim 1, by forming a curved surface portion with rounded corners at the end portion of the ground electrode, there is no edge portion at the end portion of the ground electrode, and local electric field concentration occurs in the ground electrode. Can be relaxed.

また、請求項１の発明によれば、グランド電極の端部の前記放電極側に、断面視で放電極側に凸状の曲面部を形成することで、グランド電極の放電極側の端部のエッジ部分がなくなり、より高電界となる放電極に近い部位において電界集中が生じることを緩和させることができる。その結果、放電極とグランド電極との間の電界強度を高めることができる。さらに、請求項１の発明によれば、グランド電極を断面視で略円形とすることで、全周にわたってエッジ部分をなくすことができるため、グランド電極に局所的に電界集中が生じるのをより一層緩和することができる。 Further, according to the invention of claim 1, the discharge electrode side of the end portion of the ground electrode, by forming a convex curved portion on the electrode side discharge in sectional view, an end portion of the discharge electrode side of the ground electrode It is possible to alleviate the occurrence of electric field concentration at a portion close to the discharge electrode that has a higher electric field. As a result, the electric field strength between the discharge electrode and the ground electrode can be increased. In addition, according to the first aspect of the present invention, since the edge portion can be eliminated over the entire circumference by making the ground electrode substantially circular in cross-sectional view, electric field concentration locally occurs in the ground electrode. Can be relaxed.

請求項２の発明によれば、曲面部を断面視で略半円弧状とすることで、グランド電極の放電極側の面の反対側の面側の端部におけるエッジ部分もなくすことができるので、グランド電極に局所的に電界集中が生じることをより緩和させることができる。 According to the second aspect of the present invention, since the curved surface portion has a substantially semicircular arc shape in cross-sectional view, the edge portion at the end of the ground electrode opposite to the surface on the discharge electrode side can be eliminated. Further, local concentration of the electric field in the ground electrode can be alleviated.

請求項３の発明によれば、グランド電極に放電極側の端部を外周とする略円形の開口部を設けるとともに、グランド電極を、平面視で放電極が略中心となるように配置することで、グランド電極のうち放電極に最も近い領域を略環状とすることができるため、電界値が高くなる部位が局所的に形成されてしまうのを抑制することができる。その結果、隣接電極間にリーク電流が生じるのをより一層抑制することができる。 According to the third aspect of the present invention, the ground electrode is provided with a substantially circular opening having an end on the discharge electrode side as an outer periphery, and the ground electrode is disposed so that the discharge electrode is substantially centered in plan view. Thus, since the region of the ground electrode that is closest to the discharge electrode can be substantially annular, it is possible to suppress the formation of a portion where the electric field value is increased locally. As a result, it is possible to further suppress the occurrence of leak current between adjacent electrodes.

請求項４の発明によれば、イオンミストをより多く生じさせることができる静電霧化装置を備えた加熱送風装置を得ることができる。 According to invention of Claim 4 , the heating air blower provided with the electrostatic atomizer which can produce more ion mist can be obtained.

以下、本発明の実施形態について図面を参照しながら詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

（第１実施形態）図１は、本実施形態にかかる静電霧化装置の斜視図、図２は、静電霧化装置の断面図、図３は、本発明および従来例のリーク回避可能電界値と電流値との関係を示すグラフ、図４は、電界と微細粒子生成量との関係を示すグラフ、図５は、加熱送風装置の一例であるドライヤーの断面図である。   (First Embodiment) FIG. 1 is a perspective view of an electrostatic atomizer according to this embodiment, FIG. 2 is a sectional view of the electrostatic atomizer, and FIG. 3 is capable of avoiding leaks of the present invention and the conventional example. FIG. 4 is a graph showing the relationship between the electric field value and the current value, FIG. 4 is a graph showing the relationship between the electric field and the amount of fine particles generated, and FIG. 5 is a cross-sectional view of a dryer which is an example of a heating blower.

本実施形態にかかる静電霧化装置１は、水（液体）が供給される柱状の放電極２と、放電極２と所定の間隔を隔てて対向して配置されるグランド電極３と、リード線４を介して放電極２およびグランド電極３が接続され、放電極２とグランド電極３との間に電圧を印可する電圧印加部５と、放電極２を冷却することにより放電極２の表面に大気中の水分を結露させる冷却装置６と、を備えている。   The electrostatic atomizer 1 according to the present embodiment includes a columnar discharge electrode 2 to which water (liquid) is supplied, a ground electrode 3 disposed to face the discharge electrode 2 at a predetermined interval, and leads The discharge electrode 2 and the ground electrode 3 are connected via a wire 4, and a voltage application unit 5 that applies a voltage between the discharge electrode 2 and the ground electrode 3, and the surface of the discharge electrode 2 by cooling the discharge electrode 2. And a cooling device 6 for condensing moisture in the atmosphere.

放電極２は、真鍮等の熱伝導生が良い材料によって形成された略円柱状の部材であり、その先端部には、先端に供給される液量を規制する略球状の液体補給部２ａが設けられている。   The discharge electrode 2 is a substantially cylindrical member formed of a material having good thermal conductivity such as brass, and a substantially spherical liquid replenishing portion 2a for regulating the amount of liquid supplied to the tip is provided at the tip. Is provided.

グランド電極３は、図１および図２に示すように、平板状かつ略リング状をしており、グランド電極３の中央部には、平面視で放電極２を略中心とするとともに、グランド電極３の内周側端部（グランド電極の放電極側の端部）３ｃを外周とする略円形の開口部３ｂが設けられている。   As shown in FIGS. 1 and 2, the ground electrode 3 has a flat plate shape and a substantially ring shape, and a central portion of the ground electrode 3 has the discharge electrode 2 substantially at the center in plan view. 3 is provided with a substantially circular opening 3b having an outer peripheral side end 3c (end on the discharge electrode side of the ground electrode) 3c as an outer periphery.

さらに、本実施形態では、グランド電極３の放電極２に対向する対向面３ｄの内周側端部３ｃ側に、断面視で四半円弧状をした放電極２側に凸の曲面部３ａが形成されている。   Furthermore, in the present embodiment, a convex curved surface portion 3a is formed on the side of the discharge electrode 2 having a quadrangular arc shape in a cross-sectional view on the inner peripheral side end portion 3c side of the facing surface 3d of the ground electrode 3 facing the discharge electrode 2. Has been.

すなわち、本実施形態では、曲面部３ａが平面視で放電極２を略中心とする略円環状に形成されている。   That is, in the present embodiment, the curved surface portion 3a is formed in a substantially annular shape having the discharge electrode 2 as the center in plan view.

冷却装置６は、半導体電子熱交換素子であるペルチェ素子により構成されている。具体的には、冷却装置６は、熱を吸収する吸熱板６ｂと、熱を放出する放熱板６ｄと、吸熱板６ｂと放熱板６ｄとの間に介在し、吸熱板６ｂ側の温度と放熱板６ｄ側の温度との温度差を適宜設定するための熱伝素子６ｃと、を備えている。さらに、本実施形態では、放電極２と吸熱板６ｂとの間に、当該放電極２と吸熱板６ｂ間を電気的に絶縁する絶縁板６ａを介在させ、放電極２とグランド電極３との間に電圧を印可した際に、放電極２と吸熱板６ｂとの間にリーク電流が発生しないようにしている。また、冷却装置６の放熱板６ｄ側には放熱フィン７が設けられている。そして、冷却装置６によって放電極２を冷却する際に発生する熱量を放熱フィン７によって放熱することにより、放電極２の冷却効果の低下を防ぐようにしている。なお、吸熱板６ｂと放熱板６ｄとは、図示せぬリード線を介して電圧印加部５に電気的に接続されている。   The cooling device 6 is composed of a Peltier element that is a semiconductor electronic heat exchange element. Specifically, the cooling device 6 is interposed between the heat absorbing plate 6b that absorbs heat, the heat radiating plate 6d that releases heat, the heat absorbing plate 6b and the heat radiating plate 6d, and the temperature and heat dissipation on the side of the heat absorbing plate 6b. A heat transfer element 6c for appropriately setting a temperature difference from the temperature on the plate 6d side. Furthermore, in this embodiment, an insulating plate 6a that electrically insulates between the discharge electrode 2 and the heat absorption plate 6b is interposed between the discharge electrode 2 and the heat absorption plate 6b, so that the discharge electrode 2 and the ground electrode 3 When a voltage is applied between them, no leak current is generated between the discharge electrode 2 and the heat absorbing plate 6b. Further, heat radiating fins 7 are provided on the heat radiating plate 6 d side of the cooling device 6. The amount of heat generated when the discharge electrode 2 is cooled by the cooling device 6 is radiated by the radiation fins 7 to prevent a decrease in the cooling effect of the discharge electrode 2. The heat absorbing plate 6b and the heat radiating plate 6d are electrically connected to the voltage applying unit 5 through lead wires (not shown).

以上の構成による静電霧化装置１によれば、放電極２とグランド電極３との間に電圧を印可すると、まず、冷却装置６によって放電極２が冷却され、当該放電極２の周囲の空気を冷却して結露点以下の温度まで下げることにより、空気中の水蒸気が放電極２の表面に水滴となって結露する。   According to the electrostatic atomizer 1 having the above configuration, when a voltage is applied between the discharge electrode 2 and the ground electrode 3, the discharge electrode 2 is first cooled by the cooling device 6. By cooling the air and lowering it to a temperature below the dew point, water vapor in the air forms water droplets on the surface of the discharge electrode 2 and condenses.

このとき、放電極２の先端の液体補給部２ａに供給された水滴は電荷を伴って空気中に飛び出し、そして、高電界中を漂う間にレイリー***を繰り返して最終的に３〜１００ｎｍ程度のイオンミストＭが生成され、グランド電極３側に放出される。   At this time, the water droplet supplied to the liquid replenishing part 2a at the tip of the discharge electrode 2 jumps out into the air with electric charge, and repeats Rayleigh splitting while drifting in a high electric field to finally reach about 3 to 100 nm. Ion mist M is generated and released to the ground electrode 3 side.

次に、上述した静電霧化装置を備える加熱送風装置について、ドライヤーを例に説明する。   Next, a heating blower provided with the above-described electrostatic atomizer will be described by taking a dryer as an example.

本実施形態にかかるドライヤー１０は、図５に示すように、筒状に形成されるハウジング１６の下部にグリップ２８が折り畳み可能に取り付けられている。このハウジング１６の後端部には吸入口１５が形成される一方、ハウジング１６の先端部には吐出口１４が形成され、吸入口１５で吸い込まれた空気がハウジング１６の内部で適宜加熱されて吐出口１４から吹き出されるようになっている。本実施形態では、吐出口１４内には、吐出格子２４および吐出口１４から吹き出される風の風向を調節するノズル２５が設けられている。また、本実施形態では、ハウジング１６の内部に上述した静電霧化装置１が取り付けられており、このハウジング１６の上端部には、吐出口１４と同方向に解放される放出口２１が形成されている。そして、この放出口２１から静電霧化装置１で生成されたイオンミストＭを含む空気が吹き出されるようになっている。   As shown in FIG. 5, the dryer 10 according to the present embodiment has a grip 28 foldably attached to a lower portion of a housing 16 formed in a cylindrical shape. A suction port 15 is formed at the rear end portion of the housing 16, while a discharge port 14 is formed at the front end portion of the housing 16. Air sucked through the suction port 15 is appropriately heated inside the housing 16. It is blown out from the discharge port 14. In the present embodiment, a nozzle 25 that adjusts the direction of the wind blown from the discharge grid 24 and the discharge port 14 is provided in the discharge port 14. In the present embodiment, the electrostatic atomizer 1 described above is attached to the inside of the housing 16, and a discharge port 21 that is released in the same direction as the discharge port 14 is formed at the upper end of the housing 16. Has been. And the air containing the ion mist M produced | generated by the electrostatic atomizer 1 from this discharge port 21 is blown out.

また、ハウジング１６の内部には、保持筒２３が設けられており、この保持筒２３に取り付けられたモータ１９と、このモータ１９により回転駆動されるファン１７と、ファン１７により吸入口１５から吸い込まれた空気を整流する整流翼１８と、で送風部２０が形成されている。そして、送風部２０の下流側には、空気を加熱する加熱部としてのヒータ２２が設けられている。すなわち、ファン１７の回転によって吸入口１５から吸い込まれた空気がヒータ２２で加熱されて吐出口１４から吹き出されるようになっている。   A holding cylinder 23 is provided inside the housing 16, and a motor 19 attached to the holding cylinder 23, a fan 17 that is rotationally driven by the motor 19, and the fan 17 is sucked from the suction port 15. The air blowing section 20 is formed by the rectifying blade 18 that rectifies the generated air. And the heater 22 as a heating part which heats air is provided in the downstream of the ventilation part 20. As shown in FIG. That is, the air sucked from the suction port 15 by the rotation of the fan 17 is heated by the heater 22 and blown out from the discharge port 14.

なお、図３中の符号２７はメインスイッチ、符号２９は電源コードである。   In FIG. 3, reference numeral 27 denotes a main switch, and reference numeral 29 denotes a power cord.

以上の構成による本実施形態のドライヤー１０では、ファン１７を駆動してヒータ２２に通電することにより、吐出口１４から温風の吹出しが可能となり、かつ、静電霧化装置１で発生させたイオンミストＭを放出口２１から放出できるようになっている。   In the dryer 10 of the present embodiment having the above-described configuration, the fan 17 is driven and the heater 22 is energized so that warm air can be blown from the discharge port 14 and is generated by the electrostatic atomizer 1. The ion mist M can be discharged from the discharge port 21.

以上の本実施形態によれば、グランド電極３の放電極２に対向する対向面３ｄの内周側端部３ｃ側に、断面視で四半円弧状をした放電極２側に凸の曲面部３ａを形成することで、グランド電極３の放電極２側にエッジ部分がなくすことができるため、電圧を印可した際に局所的に電界集中が生じることを緩和させることができる。   According to the above-described embodiment, the curved surface portion 3a that protrudes toward the discharge electrode 2 that has a quadrangular arc shape in cross-sectional view on the inner peripheral side end portion 3c side of the facing surface 3d that faces the discharge electrode 2 of the ground electrode 3. Since the edge portion can be eliminated on the discharge electrode 2 side of the ground electrode 3, it is possible to alleviate the occurrence of local electric field concentration when a voltage is applied.

ここで、図３は、本実施形態および従来例のリーク回避可能電界値と電流値との関係を示すグラフである。図３において、ｆ１は本実施形態にかかるグランド電極を用いた場合のグラフで、ｆ２は従来のグランド電極を用いた場合のグラフである。なお、図３では、従来例として、平板状かつ略リング状をしており、断面視略長方形状のグランド電極を用いている。すなわち、図３は、放電極側に角部を有する従来のグランド電極と放電極側に凸の曲面部が形成されている本実施形態のグランド電極とを比較した図である。このグラフによれば、電流値が一定のとき（所定の電圧が印可されたとき）のリーク回避可能電界値は、従来例（図３中、点Ａ）よりも本実施形態（図３中、点Ｂ）の方が値が高くなっている。   Here, FIG. 3 is a graph showing the relationship between the leakage avoidable electric field value and the current value of the present embodiment and the conventional example. In FIG. 3, f1 is a graph when the ground electrode according to the present embodiment is used, and f2 is a graph when the conventional ground electrode is used. In FIG. 3, as a conventional example, a flat electrode and a substantially ring shape are used, and a ground electrode having a substantially rectangular shape in cross section is used. That is, FIG. 3 is a diagram comparing a conventional ground electrode having a corner portion on the discharge electrode side and a ground electrode of the present embodiment in which a convex curved surface portion is formed on the discharge electrode side. According to this graph, the leakage avoidable electric field value when the current value is constant (when a predetermined voltage is applied) is greater than that of the conventional example (point A in FIG. 3) in this embodiment (in FIG. 3, Point B) has a higher value.

すなわち、グランド電極３の対向面３ｄ側の内周側端部３ｃに、放電極２側に凸の曲面部３ａを設けることで、放電極とグランド電極との間に印可する電圧を所定の値とした場合における、リーク電流の発生を回避することのできる許容電界値を従来の静電霧化装置よりも高くすることができる。   That is, by providing a convex curved surface portion 3 a on the discharge electrode 2 side at the inner peripheral side end portion 3 c on the facing surface 3 d side of the ground electrode 3, a voltage applied between the discharge electrode and the ground electrode is a predetermined value. In this case, the allowable electric field value that can avoid the occurrence of leakage current can be made higher than that of the conventional electrostatic atomizer.

その結果、放電極とグランド電極との間の電界強度を高めることができるため、図４に示すように、ナノメータサイズの微細粒子化されたイオンミストＭの量を増大させることができる。   As a result, since the electric field strength between the discharge electrode and the ground electrode can be increased, as shown in FIG. 4, the amount of nanometer-sized finely divided ion mist M can be increased.

また、許容電界値が増加することで、グランド電極と放電極側との距離を小さくすることが可能となり、静電霧化装置の小型化を図ることも可能である。   In addition, since the allowable electric field value increases, the distance between the ground electrode and the discharge electrode can be reduced, and the electrostatic atomizer can be downsized.

また、本実施形態によれば、グランド電極３に内周側端部３ｃを外周とする略円形の開口部３ｂを設けるとともに、グランド電極３を、平面視で放電極２が略中心となるように配置することで、グランド電極３のうち放電極２の先端の液体補給部２ａに最も近い領域を略環状とすることができ、電界値が高くなる部位が局所的に形成されてしまうのを抑制することができる。その結果、リーク電流が生じるのをより一層抑制することができる。   Further, according to the present embodiment, the ground electrode 3 is provided with the substantially circular opening 3b having the inner peripheral side end 3c as the outer periphery, and the discharge electrode 2 is substantially centered in the plan view. By disposing the first electrode, the region of the ground electrode 3 that is closest to the liquid replenishing portion 2a at the tip of the discharge electrode 2 can be formed into a substantially annular shape, and a region where the electric field value becomes high is locally formed. Can be suppressed. As a result, leakage current can be further suppressed.

また、本実施形態では、ナノメータサイズの微細粒子化されたイオンミストＭの量を増大させることができる静電霧化装置１をドライヤー１０に備えることで、毛髪等に潤いを持たせるイオンミストＭをより多く生じさせることができるドライヤーを得ることができるようになる。   Moreover, in this embodiment, the ion mist M which moisturizes hair etc. is provided by providing the dryer 10 with the electrostatic atomizer 1 which can increase the quantity of the ion mist M made into the fine particle of nanometer size. It becomes possible to obtain a dryer that can produce more.

（第２実施形態）図６は、本実施形態にかかる静電霧化装置の断面図である。なお、本実施形態にかかる静電霧化装置は、上記第１実施形態にかかる静電霧化装置と同様の構成要素を有している。よって、それら同様の構成要素については共通の符号を付与するとともに、重複する説明を省略する。   (Second Embodiment) FIG. 6 is a sectional view of an electrostatic atomizer according to this embodiment. In addition, the electrostatic atomizer concerning this embodiment has the same component as the electrostatic atomizer concerning the said 1st Embodiment. Therefore, the same constituent elements are given common reference numerals, and redundant description is omitted.

本実施形態にかかる静電霧化装置１Ａは、図６に示すように、基本的に上記第１実施形態の静電霧化装置１と略同様の構成を備えており、グランド電極３Ａの放電極２に対向する対向面３ｄの内周側端部３ｃ側に形成された曲面部３ａＡが、断面視で略半円弧状をしている点が上記第１実施形態と異なっている。   As shown in FIG. 6, the electrostatic atomizer 1A according to the present embodiment basically has the same configuration as the electrostatic atomizer 1 of the first embodiment, and the ground electrode 3A is released. This is different from the first embodiment in that the curved surface portion 3aA formed on the inner peripheral side end portion 3c side of the facing surface 3d facing the electrode 2 has a substantially semicircular arc shape in a sectional view.

具体的には、曲面部３ａＡは、断面視でグランド電極３Ａの内周側端部３ｃ側に対向面３ｄから当該対向面３ｄの反対側の面３ｅにかけて略半円弧状となるように形成されている。   Specifically, the curved surface portion 3aA is formed in a substantially semicircular arc shape from the facing surface 3d to the surface 3e opposite to the facing surface 3d on the inner peripheral side end portion 3c side of the ground electrode 3A in a cross-sectional view. ing.

そして、上記第１実施形態と同様に、曲面部３ａＡは平面視で放電極２を略中心とする略円環状に形成されている。   Similarly to the first embodiment, the curved surface portion 3aA is formed in a substantially annular shape having the discharge electrode 2 as the center in plan view.

以上の本実施形態によっても、上記第１実施形態と同様の効果を奏することができる。   According to the present embodiment as described above, the same effects as those of the first embodiment can be obtained.

また、本実施形態によれば、曲面部３ａＡを断面視で略半円弧状とすることで、グランド電極３Ａの対向面３ｄ側の端部だけでなく対向面３ｄの反対側の面３ｅの端部側においてもエッジをなくすことができるので、電界集中が生じるのをより一層緩和することができる。   In addition, according to the present embodiment, the curved surface portion 3aA has a substantially semicircular shape when viewed in cross section, so that the end of the surface 3e opposite to the facing surface 3d as well as the end portion on the facing surface 3d side of the ground electrode 3A. Since the edge can be eliminated also on the part side, the occurrence of electric field concentration can be further alleviated.

ところで、放出されたイオンミストＭは電荷を有しているため、グランド電極３Ａに電界が生じるとグランド電極３Ａ側に引き寄せられる静電気力が働く。そしてこの静電気力は電界に比例するため、グランド電極３Ａに電界集中部が生じると、放出されたイオンミストＭが電界集中部に引き寄せられやすくなってしまう。しかしながら、本実施形態によれば、対向面３ｄの反対側の面３ｅの端部側における電界集中を緩和することができるため、放出されたイオンミストＭがグランド電極３Ａに捕捉されてしまうのを抑制することができ、以て、イオンミストＭの放出量の減少を抑制することができる。   By the way, since the emitted ion mist M has an electric charge, when an electric field is generated in the ground electrode 3A, an electrostatic force attracted to the ground electrode 3A side works. Since the electrostatic force is proportional to the electric field, if an electric field concentration portion is generated in the ground electrode 3A, the released ion mist M is easily attracted to the electric field concentration portion. However, according to the present embodiment, since the electric field concentration on the end portion side of the surface 3e opposite to the facing surface 3d can be reduced, the released ion mist M is captured by the ground electrode 3A. Therefore, it is possible to suppress a decrease in the release amount of the ion mist M.

（第３実施形態）図７は、本実施形態にかかる静電霧化装置の斜視図、図８は、静電霧化装置の断面図である。なお、本実施形態にかかる静電霧化装置は、上記第１実施形態にかかる静電霧化装置と同様の構成要素を有している。よって、それら同様の構成要素については共通の符号を付与するとともに、重複する説明を省略する。 (Third Embodiment) FIG. 7 is a perspective view of an electrostatic atomizer according to this embodiment, and FIG. 8 is a sectional view of the electrostatic atomizer. In addition, the electrostatic atomizer concerning this embodiment has the same component as the electrostatic atomizer concerning the said 1st Embodiment. Therefore, the same constituent elements are given common reference numerals, and redundant description is omitted.

本実施形態にかかる静電霧化装置１Ｂは、図７および図８に示すように、基本的に上記第１実施形態の静電霧化装置１と略同様の構成を備えており、グランド電極３Ｂが略円形断面を有するワイヤ状部材である点が上記第１実施形態と異なっている。   As shown in FIGS. 7 and 8, the electrostatic atomizer 1B according to the present embodiment basically has a configuration substantially the same as that of the electrostatic atomizer 1 of the first embodiment, and includes a ground electrode. The point that 3B is a wire-shaped member having a substantially circular cross section is different from the first embodiment.

本実施形態では、このグランド電極３Ｂは、平面視で放電極２を略中心とする略円環状に形成されている。   In the present embodiment, the ground electrode 3B is formed in a substantially annular shape having the discharge electrode 2 as the center in plan view.

以上の本実施形態によっても、上記第１および第２実施形態と同様の効果を奏することができる。   The present embodiment described above can also provide the same effects as those of the first and second embodiments.

また、本実施形態によれば、グランド電極３Ｂを断面視で略円形とすることで、全周にわたってエッジ部分をなくすことができる上、グランド電極３Ｂは、放電極２先端の液体補給部２ａまでの距離のばらつきをなくすことができるため、電界集中が生じるのをより一層緩和することができる。   In addition, according to the present embodiment, the ground electrode 3B is substantially circular in cross-sectional view, so that the edge portion can be eliminated over the entire circumference, and the ground electrode 3B can reach the liquid supply portion 2a at the tip of the discharge electrode 2. Therefore, the occurrence of electric field concentration can be further alleviated.

その結果、イオンミストＭの放出量をより一層増加させることができる。   As a result, the discharge amount of the ion mist M can be further increased.

さらに、ワイヤ状部材を用いてグランド電極３Ｂを形成しているため、製造効率の向上および製造コストの削減を図ることができる。   Furthermore, since the ground electrode 3B is formed using the wire-like member, the manufacturing efficiency can be improved and the manufacturing cost can be reduced.

以上、本発明にかかる静電霧化装置およびそれを備えた加熱送風装置の好適な実施形態について説明したが、本発明は上記実施形態に限ることなく要旨を逸脱しない範囲で種々の実施形態を採用することができる。   As mentioned above, although preferred embodiment of the electrostatic atomizer concerning this invention and a heating air blower provided with the same was described, this invention is not limited to the said embodiment, In the range which does not deviate from a summary, various embodiment is carried out. Can be adopted.

例えば、上記第１実施形態では、加熱送風装置としてドライヤーを例示したが、ドライヤーに限らず、上述したものと同様の静電霧化装置を備える場合には、ファンヒータ等の他の加熱送風装置としても本発明を実施することができる。   For example, in the said 1st Embodiment, although the dryer was illustrated as a heating air blower, when not providing not only a drier but the electrostatic atomizer similar to what was mentioned above, other heating air blowers, such as a fan heater, are provided. The present invention can also be implemented.

また、上記第２および第３実施形態にかかる静電霧化装置を備えた加熱送風装置としても本発明を実施することができる。   Moreover, this invention can be implemented also as a heating air blower provided with the electrostatic atomizer concerning 2nd and 3rd embodiment.

また、上記第１から第３実施形態においては、グランド電極を放電極に対向させた場合を例示したが、グランド電極を放電極に対向させなくても本発明を実施することができる。   Further, in the first to third embodiments, the case where the ground electrode is opposed to the discharge electrode has been illustrated, but the present invention can be implemented even if the ground electrode is not opposed to the discharge electrode.

本発明の第１実施形態にかかる静電霧化装置の斜視図である。It is a perspective view of the electrostatic atomizer concerning 1st Embodiment of this invention. 本発明の第１実施形態にかかる静電霧化装置の断面図である。It is sectional drawing of the electrostatic atomizer concerning 1st Embodiment of this invention. 本発明および従来例のリーク回避可能電界値と電流値との関係を示すグラフである。It is a graph which shows the relationship between the electric field value and current value which can avoid leak of this invention and a prior art example. 電界と微細粒子生成量との関係を示すグラフである。It is a graph which shows the relationship between an electric field and a fine particle production amount. 本発明の第１実施形態にかかる加熱送風装置の一例であるドライヤーの断面図である。It is sectional drawing of the dryer which is an example of the heating air blower concerning 1st Embodiment of this invention. 本発明の第２実施形態にかかる静電霧化装置の断面図である。It is sectional drawing of the electrostatic atomizer concerning 2nd Embodiment of this invention. 本発明の第３実施形態にかかる静電霧化装置の斜視図である。It is a perspective view of the electrostatic atomizer concerning 3rd Embodiment of this invention. 本発明の第３実施形態にかかる静電霧化装置の断面図である。It is sectional drawing of the electrostatic atomizer concerning 3rd Embodiment of this invention.

符号の説明Explanation of symbols

１，１Ａ，１Ｂ 静電霧化装置
２ 放電極
３ グランド電極
３ａ，３ａＡ 曲面部
３ｂ 開口部
１０ ドライヤー（加熱送風装置） 1, 1A, 1B Electrostatic atomizer 2 Discharge electrode 3 Ground electrode 3a, 3aA Curved surface portion 3b Opening portion 10 Dryer (heating air blower)

Claims (4)

放電極とグランド電極とを備え、当該放電極とグランド電極との間に電圧を印加することで放電極に供給される液体を霧化させる静電霧化装置であって、
前記グランド電極の端部に、角を丸めた曲面部が形成され、
前記曲面部は、前記グランド電極の前記放電極側の端部に、断面視で放電極側に凸状に形成され、
前記グランド電極は、略円形断面を有するワイヤ状部材であり、
前記ワイヤ状部材は、平面視で前記放電極を略中心とする略円環状に形成されていることを特徴とする静電霧化装置。 An electrostatic atomizer that comprises a discharge electrode and a ground electrode, and atomizes the liquid supplied to the discharge electrode by applying a voltage between the discharge electrode and the ground electrode,
A curved surface with rounded corners is formed at the end of the ground electrode ,
The curved surface portion is formed in a convex shape on the discharge electrode side in a cross-sectional view at an end portion on the discharge electrode side of the ground electrode,
The ground electrode is a wire-like member having a substantially circular cross section,
The electrostatic atomizer according to claim 1, wherein the wire-like member is formed in a substantially annular shape having the discharge electrode as a center in plan view . 前記曲面部は、断面視で、前記グランド電極の前記放電極側の面から放電極側の面の反対側の面にかけて略半円弧状に形成されていることを特徴とする請求項１に記載の静電霧化装置。 The curved surface portion, according to claim 1, characterized in that in cross section is formed in a substantially semicircular arc shape toward the opposite side of the surface of the discharge electrode side surface of the discharge electrode side of the ground electrode Electrostatic atomizer. 前記グランド電極は、平面視で前記放電極を略中心とするとともに、前記グランド電極の前記放電極側の端部を外周とする略円形の開口部が設けられていることを特徴とする請求項１又は２に記載の静電霧化装置。 The ground electrode is provided with a substantially circular opening with the discharge electrode side end of the ground electrode as an outer periphery in a plan view. The electrostatic atomizer as described in 1 or 2 . 請求項１〜３のうちいずれか１項に記載の静電霧化装置を備えることを特徴とする加熱送風装置。 Hot air blower, characterized in that it comprises an electrostatic atomization device according to any one of claims 1-3.
JP2007245436A 2007-09-21 2007-09-21 Electrostatic atomizer and heated air blower equipped with the same Expired - Fee Related JP4877173B2 (en)

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JP2007245436A JP4877173B2 (en) 2007-09-21 2007-09-21 Electrostatic atomizer and heated air blower equipped with the same
PCT/JP2008/065324 WO2009037946A1 (en) 2007-09-21 2008-08-27 Electrostatic atomizer and heated air blower comprising the same
CN200880107480A CN101801537A (en) 2007-09-21 2008-08-27 Electrostatic atomizer and heated air blower comprising the same
TW97135483A TW200924853A (en) 2007-09-21 2008-09-16 Electrostatic atomizer and heated air blower comprising the same

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