JP5914800B2 - Deodorizing method with electrostatic atomization mist - Google Patents

Deodorizing method with electrostatic atomization mist Download PDF

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JP5914800B2
JP5914800B2 JP2013218402A JP2013218402A JP5914800B2 JP 5914800 B2 JP5914800 B2 JP 5914800B2 JP 2013218402 A JP2013218402 A JP 2013218402A JP 2013218402 A JP2013218402 A JP 2013218402A JP 5914800 B2 JP5914800 B2 JP 5914800B2
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electrode
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electrostatic atomization
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鈴木 一敬
一敬 鈴木
小幡 健二
健二 小幡
中田 隆行
隆行 中田
須田 洋
洋 須田
伊東 幹夫
幹夫 伊東
篤 井坂
篤 井坂
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Panasonic Intellectual Property Management Co Ltd
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Description

本発明は静電霧化ミストによる脱臭方法に関するものである。   The present invention relates to a deodorizing method using electrostatic atomization mist.

ミストを発生させる霧化装置として、特許第3260150号公報(特許文献1)の他、図7に示すような静電霧化装置がある。これは、水Wを収容した水タンク6と、水タンク6内の水を毛細管現象で吸い上げて先端の針状霧化部に導く吸水体4と、吸水体4の針状霧化部に対向する対向電極3と、水タンク6内の水Wもしくは吸水体4で保持されている水に印加電極2を介して電圧を印加する高圧発生回路15とからなり、対向電極3との間の放電箇所となる吸水体4の針状霧化部に存在する水にレイリー分裂を起こさせて霧化することでミストMを発生させるものである。   As an atomizer that generates mist, there is an electrostatic atomizer as shown in FIG. 7 in addition to Japanese Patent No. 3260150 (Patent Document 1). This is opposite to the water tank 6 containing the water W, the water absorbing body 4 that sucks up the water in the water tank 6 by capillary action and leads it to the needle-shaped atomizing section at the tip, and the needle-shaped atomizing section of the water absorbing body 4 And a high-voltage generating circuit 15 that applies a voltage to the water W held in the water tank 6 or the water held by the water absorbing body 4 via the application electrode 2, and discharge between the counter electrode 3. Mist M is generated by causing Rayleigh splitting in the water present in the needle-like atomization portion of the water-absorbing body 4 serving as a location and atomizing the water.

特許第3260150号公報Japanese Patent No. 3260150

本発明は、活性種によるところの脱臭機能を有効に利用することができる静電霧化ミストによる脱臭方法を提供することを課題とするものである。   This invention makes it a subject to provide the deodorizing method by the electrostatic atomization mist which can utilize effectively the deodorizing function by the active species.

本発明の静電霧化ミストによる脱臭方法は、電極に水を供給し、前記電極に高電圧をかけて、前記電極上の水を分裂させることにより、活性種を有する粒子径がナノメータサイズのミストを生成し、このナノメータサイズのミストを用いて空気中の臭気成分を脱臭することを特徴とする。 In the deodorization method using electrostatic atomization mist of the present invention, water is supplied to an electrode, and a high voltage is applied to the electrode to split the water on the electrode, whereby the particle size having active species is nanometer size. A mist is generated, and the odor component in the air is deodorized using the nanometer-size mist.

本発明の静電霧化ミストによる脱臭方法は、電極に水を供給し、前記電極に高電圧をかけて、前記電極上の水を分裂させることにより、活性種を有する粒子径がナノメータサイズのミストを生成し、このナノメータサイズのミストを用いて壁面の臭気成分を脱臭することを特徴とする。 In the deodorization method using electrostatic atomization mist of the present invention, water is supplied to an electrode, and a high voltage is applied to the electrode to split the water on the electrode, whereby the particle size having active species is nanometer size. A mist is generated, and the odor component on the wall surface is deodorized using the nanometer mist.

本発明は、活性種によるところの脱臭機能を有効に利用することができる。   The present invention can effectively utilize the deodorizing function due to the active species.

本発明の実施の形態の一例の断面図である。It is sectional drawing of an example of embodiment of this invention. 同上の断面図である。It is sectional drawing same as the above. 同上の格子状カバーを外した状態の平面図、A plan view of the state where the grid-like cover is removed, 同上の他例の断面図である。It is sectional drawing of the other example same as the above. 本発明に係る空気清浄機の一例の縦断面図である。It is a longitudinal cross-sectional view of an example of the air cleaner which concerns on this invention. 同上の横断面図である。It is a cross-sectional view same as the above. 静電霧化装置の概略を示す説明図である。It is explanatory drawing which shows the outline of an electrostatic atomizer.

以下本発明を実施の形態の一例に基づいて詳述すると、図示例の静電霧化装置1は霧化させることになる水を収容した水タンク6を下部に備えたもので、円筒状で且つ周面に通風孔12が開口するホルダー10と、該ホルダー10の上部に配された対向電極3と、ホルダー10の下部に嵌め込まれて水に対する電圧印加を担う印加電極2と、この印加電極2によって保持されている複数本の棒状吸水体4と、同じく印加電極2によって保持されているイオン化針5とで構成されており、カップ状に形成されて水保持部を構成する上記水タンク6は、その上端開口縁の外面の突起60が上記ホルダー10の下部に装着されている印加電極2の外周フランジ部21に設けられている係合凹所29にバヨネット係合することで取り付けられている。   Hereinafter, the present invention will be described in detail based on an example of an embodiment. An electrostatic atomizer 1 in the illustrated example is provided with a water tank 6 containing water to be atomized in a lower part, and is cylindrical. A holder 10 having a ventilation hole 12 on its peripheral surface, a counter electrode 3 disposed on the upper part of the holder 10, an application electrode 2 fitted in the lower part of the holder 10 to apply a voltage to water, and the application electrode The water tank 6 is composed of a plurality of rod-shaped water absorbent bodies 4 held by 2 and an ionization needle 5 which is also held by the application electrode 2, and is formed in a cup shape to constitute a water holding portion. The protrusion 60 on the outer surface of the upper end opening edge is attached by bayonet engagement with the engagement recess 29 provided in the outer peripheral flange portion 21 of the application electrode 2 mounted on the lower portion of the holder 10. Yes.

対向電極3と印加電極2は共にカーボンのような導電材を混入した合成樹脂やSUSのような金属で形成されることで導電性を有しているもので、ホルダー10の上部に被せられる対向電極3はその外周面に形成された接続用突部30の外面に接触する接地用接触板71を通じて接地される。ホルダー10の下部内に嵌め込み固定されてホルダー10内面のリブ11で押さえ固定されている印加電極2も同じく外周面に形成された接続用突部20の外面に接触する接触板72を介して高電圧発生源に接続される。   Both the counter electrode 3 and the application electrode 2 are made of a synthetic resin mixed with a conductive material such as carbon or a metal such as SUS, and are electrically conductive. The electrode 3 is grounded through a grounding contact plate 71 that contacts the outer surface of the connecting projection 30 formed on the outer peripheral surface thereof. The applied electrode 2 which is fitted and fixed in the lower part of the holder 10 and is pressed and fixed by the rib 11 on the inner surface of the holder 10 is also high through a contact plate 72 which contacts the outer surface of the connecting projection 20 formed on the outer peripheral surface. Connected to voltage source.

前記棒状吸水体4は、多孔質セラミックで形成されてその上端が針状に尖った針状霧化部となっているもので、複数本、図示例では6本の吸水体4が印加電極2に取り付けられている。これら吸水体4は印加電極2の中央に配されたイオン化針5を中心とする同心円上に等間隔で配置されて、上部が印加電極2よりも上方に突出し、下部は下方に突出して上記水タンク6内に入れられた水と接触する。   The rod-shaped water absorbing body 4 is formed of a porous ceramic and has a needle-like atomizing portion whose upper end is pointed like a needle, and a plurality of water absorbing bodies 4 in the illustrated example are applied to the application electrode 2. Is attached. These water absorbing bodies 4 are arranged at equal intervals on a concentric circle centered on an ionization needle 5 disposed in the center of the application electrode 2, the upper part projects upward from the application electrode 2, and the lower part projects downward and the water Contact with water contained in the tank 6.

図中22は印加電極2から下方に突出している円筒状のスカートで、上記複数本の吸水体4の外側を囲んでいるとともに、その下端は吸水体4の下端よりも下方に位置し、下端開口には格子状保護カバー17が被せられている。印加電極2における該スカート22は、水タンク6内に入れられた水と接触することで水に高電圧を印加すると同時に、上記格子状保護カバー17と共にセラミックで形成されている吸水体4の保護を行うものである。   In the figure, reference numeral 22 denotes a cylindrical skirt projecting downward from the application electrode 2 and surrounds the outside of the plurality of water absorbent bodies 4, and the lower ends thereof are located below the lower ends of the water absorbent bodies 4. A lattice-shaped protective cover 17 is put on the opening. The skirt 22 in the application electrode 2 applies a high voltage to the water by making contact with the water contained in the water tank 6, and at the same time, protects the water absorbing body 4 formed of ceramic together with the lattice-shaped protective cover 17. Is to do.

ここで、印加電極2は、水タンク6が連結された時、水タンク6の上面開口を略密閉してしまうことで、傾いた時にも水タンク6内の水が漏れ出ることがないようにしており、この関係で上記スカート22の周方向の一部にはスカート22の上下方向全長にわたるスリット23を設けて、水を入れた水タンク6の装着時に上記スリット23によってスカート22で囲まれた空間内の空気を抜いてスカート22内への水の流入を許すようにしている。   Here, when the water tank 6 is connected, the application electrode 2 substantially seals the upper surface opening of the water tank 6 so that the water in the water tank 6 does not leak even when tilted. Therefore, a slit 23 extending in the vertical direction of the skirt 22 is provided in a part of the skirt 22 in the circumferential direction, and the skirt 22 is surrounded by the slit 23 when the water tank 6 filled with water is mounted. The air in the space is evacuated to allow the inflow of water into the skirt 22.

ホルダー10の上面開口を閉じるように装着された対向電極3は、図3に示すように中央に開口部31を有するとともに、この開口部31の縁は上方から見た時、前記複数本の吸水体4の上端の針状部を中心とする複数の同一径の円弧Rを他の円弧rで滑らかにつないだものとなっている。対向電極3を接地し、印加電極2に高電圧発生源を接続するとともに、吸水体4が毛細管現象で水を吸い上げている時、吸水体4の上端の針状霧化部が印加電極2側の実質的な電極として機能すると同時に、対向電極3の上記円弧Rが実質的な電極として機能するものである。なお、上記開口部31には格子状保護カバー16が被せられることで、開口部31を通じてイオン化針5や吸水体4に手指などが接触することが防止されている。   The counter electrode 3 mounted so as to close the upper surface opening of the holder 10 has an opening 31 in the center as shown in FIG. 3, and the edge of the opening 31 when viewed from above is the plurality of water absorptions. A plurality of arcs R having the same diameter centered on the needle-like portion at the upper end of the body 4 are smoothly connected by other arcs r. When the counter electrode 3 is grounded and a high voltage generating source is connected to the application electrode 2 and the water absorber 4 is sucking up water by capillary action, the needle-like atomization portion at the upper end of the water absorber 4 is on the side of the application electrode 2 At the same time, the arc R of the counter electrode 3 functions as a substantial electrode. Note that the opening 31 is covered with the lattice-shaped protective cover 16, thereby preventing fingers and the like from coming into contact with the ionization needle 5 and the water absorbent 4 through the opening 31.

今、水を入れた水タンク6を装着して、印加電極2のスカート22に水を接触させると同時に、吸水体4に毛細管現象で水を吸い上げさせ、さらに対向電極3を接地するとともに印加電極2に高電圧発生源を接続して、印加電極2に負電圧を印加した時、この電圧が水にレイリー分裂を起こさせることができる高電圧であれば、吸水体4の上端の針状霧化部に達した水はここでレイリー分裂を起こしてナノメータサイズの粒子径の霧化を生じさせる静電霧化がなされる。   Now, a water tank 6 containing water is attached, and water is brought into contact with the skirt 22 of the application electrode 2. At the same time, the water absorption body 4 is sucked up by capillary action, and the counter electrode 3 is grounded and the application electrode. When a high voltage generating source is connected to 2 and a negative voltage is applied to the application electrode 2, if this voltage is a high voltage that can cause Rayleigh splitting in water, a needle-like mist on the upper end of the water absorber 4 The water that has reached the vaporizing section is subjected to electrostatic atomization that causes Rayleigh splitting and atomization of nanometer-sized particles.

また、この静電霧化装置1では印加電極2によって保持されているイオン化針5にも負電圧が同時に印加され、対向電極3との間でのコロナ放電によってマイナスイオンの発生もなされる。このように構成することで、マイナスイオン発生機能を備えた静電霧化装置とすることができる。また、接地されているとともに上記吸水体4と上記イオン化針5の両者に対向している対向電極3を備えたものとすることで、対向電極3を静電霧化とマイナスイオン発生とで共用して、少ない部品点数でマイナスイオン発生機能も備えたものとすることができる。この時、電極間の距離が同じであればマイナスイオン発生のために必要な電圧よりも静電霧化に必要な電圧の方が高いことから、ここでは吸水体4の上端の針状部から対向電極3までの距離L1よりも、イオン化針5から対向電極3までの距離L2をかなり長くすることで静電霧化の方を生じやすくしている。このように吸水体4の針状霧化部と対向電極3との間の距離よりもイオン化針5と対向電極3との間の距離の方が長くしていると、マイナスイオン発生と静電霧化とで同電圧の負電圧を用いることができるために、使用する高電圧発生回路も共用することができ、しかもオゾンの発生のおそれを無くすことができる。もっとも、水タンク6内の水が無くなるとともに吸水体4で保持している水も霧化されてなくなれば、上記マイナスイオンの発生のみが継続して行われる。   In the electrostatic atomizer 1, a negative voltage is simultaneously applied to the ionization needle 5 held by the application electrode 2, and negative ions are generated by corona discharge with the counter electrode 3. By comprising in this way, it can be set as the electrostatic atomizer provided with the negative ion generation function. Further, by providing the counter electrode 3 that is grounded and faces both the water absorbing body 4 and the ionization needle 5, the counter electrode 3 is shared by electrostatic atomization and negative ion generation. Thus, a negative ion generation function can be provided with a small number of parts. At this time, if the distance between the electrodes is the same, the voltage required for electrostatic atomization is higher than the voltage required for generating negative ions. Electrostatic atomization is more likely to occur by making the distance L2 from the ionization needle 5 to the counter electrode 3 considerably longer than the distance L1 to the counter electrode 3. Thus, if the distance between the ionization needle 5 and the counter electrode 3 is longer than the distance between the needle-like atomization portion of the water absorbent 4 and the counter electrode 3, negative ions are generated and electrostatics are generated. Since the negative voltage of the same voltage can be used for atomization, the high voltage generation circuit to be used can be shared, and the possibility of ozone generation can be eliminated. However, if the water in the water tank 6 disappears and the water held by the water absorbing body 4 is not atomized, only the negative ions are continuously generated.

図4に他例を示す。これは対向電極3の中央に配したイオン化針5の下端を下方に延長して水タンク6内の水と接触するようにしたものである。印加電極2とイオン化針5との間の電気的接触度(抵抗値)は製造上の理由にばらつきが生じるが、印加電極2で負電圧が印加される水タンク6内の水にイオン化針5も接触させることで、イオン化針5に安定した負電圧を供給することができるものである。図中19はホルダー10に両端部が回動自在に取り付けられた取手である。   FIG. 4 shows another example. In this case, the lower end of the ionization needle 5 disposed in the center of the counter electrode 3 is extended downward to come into contact with water in the water tank 6. Although the electrical contact degree (resistance value) between the application electrode 2 and the ionization needle 5 varies for manufacturing reasons, the ionization needle 5 is added to the water in the water tank 6 to which a negative voltage is applied by the application electrode 2. Can also supply a stable negative voltage to the ionization needle 5. In the figure, reference numeral 19 denotes a handle in which both end portions are rotatably attached to the holder 10.

図5及び図6は上記静電霧化装置1を備えた空気清浄機7を示している。モータ83に寄って駆動されるファン82と風洞70とからなる送風機を備えて、前面の吸い込み口76から吸い込んだ空気をフィルター部81で濾過した後、吹き出し口77から外部に放出するのであるが、この空気清浄機7における吸い込み口76から吹き出し口77に至るまでの空気流路のうち、上記送風機における風洞70内で且つ吹き出し口77の近傍位置に上記静電霧化装置1が配設されている。   5 and 6 show an air cleaner 7 provided with the electrostatic atomizer 1. A fan composed of a fan 82 driven by the motor 83 and a wind tunnel 70 is provided, and the air sucked from the suction port 76 on the front surface is filtered by the filter unit 81 and then discharged to the outside from the blowing port 77. Of the air flow path from the suction port 76 to the blowout port 77 in the air cleaner 7, the electrostatic atomizer 1 is disposed in the wind tunnel 70 of the blower and in the vicinity of the blowout port 77. ing.

静電霧化で生じたナノメータサイズの粒子径のミストであるナノサイズミストは拡散性が元々高いが、送風機による送風に乗って広がるためにさらに拡散性が良好になっているものであり、このためにナノサイズミストが有している活性種によるところの室内空気中の臭気成分や室内壁面への付着物についての脱臭機能を有効に利用することができる。特に図示例のものでは、風洞70の一部に設けた収納凹所73内に静電霧化装置1を配置した時、接触板71,72と前記接続用突部20,30との接触を可能とするために収納凹所73の壁面に明けた開口部74(図1参照)と静電霧化装置1のホルダー10における通風孔12を通じて、静電霧化装置1の内部に一部の風が流入するために、霧化が促進されて霧化量が増大するとともにミストが風に乗って飛散しやすくなっている。   Nano-size mist, which is a mist of nanometer-size particle diameter generated by electrostatic atomization, is originally highly diffusive, but it is more diffusible because it spreads on the air blown by the blower. Therefore, the deodorizing function for the odor components in the indoor air and the deposits on the indoor wall surface due to the active species possessed by the nano-size mist can be effectively utilized. In particular, in the example shown in the figure, when the electrostatic atomizer 1 is disposed in the housing recess 73 provided in a part of the wind tunnel 70, the contact between the contact plates 71 and 72 and the connecting projections 20 and 30 is prevented. A part of the inside of the electrostatic atomizing device 1 is opened through an opening 74 (see FIG. 1) opened on the wall surface of the storage recess 73 and the ventilation hole 12 in the holder 10 of the electrostatic atomizing device 1 to make it possible. Since the wind flows in, the atomization is promoted to increase the amount of atomization, and the mist is easily scattered on the wind.

また、風洞70内に静電霧化装置1が配されているものの、静電霧化装置1付近を通過する空気はフィルター部81で濾過された清浄な空気であり、このために静電霧化装置1が汚れることはなく、上述のように一部の風が静電濾過装置1内に入るものの、汚れが原因で静電霧化が生じにくくなることが殆どないものである。   In addition, although the electrostatic atomizer 1 is arranged in the wind tunnel 70, the air passing through the vicinity of the electrostatic atomizer 1 is clean air filtered by the filter unit 81. The sizing apparatus 1 is not soiled, and a part of the wind enters the electrostatic filtration device 1 as described above, but the electrostatic atomization hardly occurs due to the soiling.

1 静電霧化装置   1 Electrostatic atomizer

Claims (2)

電極に水を供給し、前記電極に高電圧をかけて、前記電極上の水を分裂させることにより、活性種を有する粒子径がナノメータサイズのミストを生成し、このナノメータサイズのミストを用いて空気中の臭気成分を脱臭することを特徴とする静電霧化ミストによる脱臭方法。 By supplying water to the electrode, applying a high voltage to the electrode, and splitting the water on the electrode, a mist having a nanometer size particle size having an active species is generated, and using this nanometer mist A deodorizing method using electrostatic atomization mist, characterized by deodorizing odor components in the air. 電極に水を供給し、前記電極に高電圧をかけて、前記電極上の水を分裂させることにより、活性種を有する粒子径がナノメータサイズのミストを生成し、このナノメータサイズのミストを用いて壁面の臭気成分を脱臭することを特徴とする静電霧化ミストによる脱臭方法。 By supplying water to the electrode, applying a high voltage to the electrode, and splitting the water on the electrode, a mist having a nanometer size particle size having an active species is generated, and using this nanometer mist A deodorizing method using electrostatic atomization mist, characterized by deodorizing odor components on the wall surface.
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