JP4186718B2 - Electrostatic atomizer with negative ion generation function and air purifier equipped with the same - Google Patents

Electrostatic atomizer with negative ion generation function and air purifier equipped with the same Download PDF

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Publication number
JP4186718B2
JP4186718B2 JP2003159996A JP2003159996A JP4186718B2 JP 4186718 B2 JP4186718 B2 JP 4186718B2 JP 2003159996 A JP2003159996 A JP 2003159996A JP 2003159996 A JP2003159996 A JP 2003159996A JP 4186718 B2 JP4186718 B2 JP 4186718B2
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water
needle
electrostatic atomizer
negative ion
ion generation
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JP2004358358A (en
Inventor
一敬 鈴木
健二 小幡
隆行 中田
洋 須田
幹夫 伊東
篤 井坂
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Priority to PCT/JP2004/007597 priority patent/WO2004110642A1/en
Priority to TW093115042A priority patent/TWI243713B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • A61L9/145—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes air-liquid contact processes, e.g. scrubbing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/22—Ionisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00—Air-humidification, e.g. cooling by humidification
    • F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20—Method-related aspects
    • A61L2209/22—Treatment by sorption, e.g. absorption, adsorption, chemisorption, scrubbing, wet cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for

Description

【０００１】
【発明の属する技術分野】
本発明はマイナスイオンの発生機能を備えた静電霧化装置とこれを備えた空気清浄機に関するものである。
【０００２】
【従来の技術】
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）に示されているような静電霧化装置がある。これは図７に示すように、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***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。
【０００３】
また、マイナスイオンを発生させるマイナスイオン発生装置も良く知られている。これは対向電極と対向する針状電極に高圧の負電圧を印加させてコロナ放電を行わせることでマイナスイオンを発生させるものである。
【０００４】
【特許文献１】
特許第３２６０１５０号公報
【０００５】
【発明が解決しようとする課題】
静電霧化装置もマイナスイオン発生装置も電気的な構成はほぼ同じであるが、針状電極に水を保持させることはできない上に、静電霧化の方がマイナスイオン発生よりも大きな電圧が必要でマイナスイオン発生装置に静電霧化用の高電圧を印加した時には人体に悪影響を及ぼすオゾンが大量に発生することから、単一の構成で静電霧化とマイナスイオン発生の両機能を持たせることはできないといったことがあるために、これまでマイナスイオン発生機能を備えた静電霧化装置は提供されていない。
【０００６】
また、空気清浄機には湿式除塵のために静電噴霧装置を備えたものはあったが、室内に静電霧化によるミストを放出することができる空気清浄機は提供されていない。
【０００７】
本発明はこのような点に鑑みなされたものであって、その目的とするところはマイナスイオン発生機能を備えた静電霧化装置とこれを備えた空気清浄機を提供するにある。
【０００８】
【課題を解決するための手段】
しかして本発明にかかるマイナスイオン発生機能付き静電霧化装置は、先端に針状霧化部を備えて水保持部から水を吸い上げる吸水体と、マイナスイオンを発生させるためのイオン化針と、上記水保持部の水と上記イオン化針とに負電圧を印加して上記吸水体で静電霧化を行わせるとともに上記イオン化針にコロナ放電を生じさせる印加電極と、該印加電極に負電圧を印加する高電圧発生源と、接地されているとともに上記吸水体と上記イオン化針の両者に対向している対向電極とを備えていることに特徴を有している。対向電極を静電霧化とマイナスイオン発生とにおいて共用するようにしたものである。
【０００９】
この時、吸水体の針状霧化部と対向電極との間の距離よりもイオン化針と対向電極との間の距離の方が長くされていると、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。
【００１０】
また、複数本の吸水体がイオン化針を中心とする同心円状に並んでいることも好ましい。各吸水体の針状霧化部に対して均一な電界をかけることを容易に行うことができて安定したミスト発生を得られる上に、対向電極までの上記距離の差の設定も容易となる。
【００１１】
イオン化針はその他端が水保持部内に突出しているものであってもよい。イオン化針に対する負電圧の印加を水を通じて確実に行うことができる。
【００１２】
そして本発明にかかる空気清浄機は、送風用のファン及び除塵用のフィルターを備えるとともに、請求項１〜４のいずれかの項に記載のマイナスイオン発生機能付き静電霧化装置がファン及びフィルターの下流側に配されていることに特徴を有している。フィルターによる空気清浄化と同時にミストの発生とマイナスイオンの発生とを得ることができるものであり、しかもフィルターよりも下流側にマイナスイオン発生機能付き静電霧化装置を配しているために、空気中の塵埃で静電霧化装置の機能が損なわれてしまうことが殆どないものである。
【００１３】
【発明の実施の形態】
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。
【００１４】
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。
【００１５】
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。
【００１６】
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。
【００１７】
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。
【００１８】
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。
【００１９】
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***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***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。
【００２０】
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。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。
【００２１】
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。
【００２２】
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。
【００２３】
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。
【００２４】
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。
【００２５】
【発明の効果】
以上のように本発明に係るマイナスイオン発生機能付き静電霧化装置においては、水保持部の水と上記イオン化針とに負電圧を印加して上記吸水体で静電霧化を行わせるとともに上記イオン化針にコロナ放電を生じさせる上に、対向電極を静電霧化とマイナスイオン発生とにおいて共用するために、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。
【００２６】
また本発明にかかる空気清浄機は、フィルターによる空気清浄化と同時にミストの発生とマイナスイオンの発生とを得ることができる上に、空気中の塵埃で静電霧化装置が汚れてそのの機能が損なわれてしまうことが殆どないものである。
【図面の簡単な説明】
【図１】本発明の実施の形態の一例の断面図である。
【図２】同上の断面図である。
【図３】同上の格子状カバーを外した状態の平面図、
【図４】同上の他例の断面図である。
【図５】本発明に係る空気清浄機の一例の縦断面図である。
【図６】同上の横断面図である。
【図７】静電霧化装置の概略を示す説明図である。
【符号の説明】
１ 静電霧化装置
２ 印加電極
３ 対向電極
４ 吸水体
５ イオン化針
６ 水タンク[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrostatic atomizer having a function of generating negative ions and an air cleaner provided with the electrostatic atomizer.
[0002]
[Prior art]
As an atomizer that generates mist, there is an electrostatic atomizer as disclosed in Japanese Patent No. 3260150 (Patent Document 1). As shown in FIG. 7, the water tank 6 containing the water W, the water absorber 4 that sucks the water in the water tank 6 by capillary action and leads it to the needle-like atomizing portion, and the needle of the water absorber 4 A counter electrode 3 that faces the atomized portion, and a high voltage generation circuit 15 that applies a voltage to the water W held in the water tank 6 or the water held by the water absorber 4 via the application electrode 2. The 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 discharge location between the water absorbent 3 and the atomization.
[0003]
Also, negative ion generators that generate negative ions are well known. In this method, negative ions are generated by applying a high voltage negative voltage to a needle electrode facing the counter electrode to cause corona discharge.
[0004]
[Patent Document 1]
Japanese Patent No. 3260150 [0005]
[Problems to be solved by the invention]
Electrostatic atomizers and negative ion generators have almost the same electrical configuration, but water cannot be retained by the needle electrode, and electrostatic atomization has a higher voltage than negative ion generation. When a high voltage for electrostatic atomization is applied to the negative ion generator, a large amount of ozone that adversely affects the human body is generated. Therefore, an electrostatic atomizer having a negative ion generation function has not been provided so far.
[0006]
Some air purifiers have an electrostatic spraying device for wet dust removal, but no air purifier that can discharge mist generated by electrostatic atomization in a room is provided.
[0007]
This invention is made | formed in view of such a point, The place made into the objective is to provide the electrostatic atomizer provided with the negative ion generation function, and an air cleaner provided with the same.
[0008]
[Means for Solving the Problems]
Thus, the electrostatic atomizer with negative ion generation function according to the present invention includes a water absorbing body that has a needle-like atomization portion at the tip and sucks water from the water holding portion, an ionization needle for generating negative ions, Applying a negative voltage to the water of the water holding unit and the ionization needle to cause electrostatic atomization by the water absorbing body and generating a corona discharge in the ionization needle, and applying a negative voltage to the application electrode A high voltage generating source to be applied and a counter electrode which is grounded and faces both the water absorbing body and the ionization needle are provided. The counter electrode is shared for electrostatic atomization and negative ion generation.
[0009]
At this time, if the distance between the ionization needle and the counter electrode is longer than the distance between the needle-like atomization portion of the water absorbent and the counter electrode, negative ions are generated and electrostatic atomization occurs. Since a negative voltage of the same voltage can be used, a high voltage generation circuit to be used can be shared, and the possibility of ozone generation can be eliminated.
[0010]
It is also preferable that a plurality of water absorbing bodies are arranged concentrically around the ionization needle. A uniform electric field can be easily applied to the needle-like atomization portion of each water absorbent body, and stable mist generation can be obtained. In addition, the above difference in distance to the counter electrode can be easily set. .
[0011]
The other end of the ionization needle may protrude into the water holding part. The negative voltage can be reliably applied to the ionization needle through water.
[0012]
And the air cleaner concerning this invention is equipped with the fan for ventilation, and the filter for dust removal, and the electrostatic atomizer with a negative ion generation function as described in any one of Claims 1-4 is a fan and a filter. It is characterized by being arranged on the downstream side. Since it is possible to obtain mist generation and negative ion generation at the same time as air purification with a filter, and because an electrostatic atomizer with negative ion generation function is arranged downstream of the filter, The function of the electrostatic atomizer is hardly impaired by dust in the air.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
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.
[0014]
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.
[0015]
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.
[0016]
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.
[0017]
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.
[0018]
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.
[0019]
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.
[0020]
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. 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. 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.
[0021]
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.
[0022]
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.
[0023]
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.
[0024]
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.
[0025]
【The invention's effect】
As described above, in the electrostatic atomizer with negative ion generation function according to the present invention, a negative voltage is applied to the water in the water holding unit and the ionization needle to cause electrostatic atomization by the water absorber. In addition to causing corona discharge in the ionization needle and sharing the counter electrode for electrostatic atomization and negative ion generation, the negative electrode generation function can be provided with a small number of parts.
[0026]
In addition, the air cleaner according to the present invention can obtain the generation of mist and the generation of negative ions simultaneously with the air cleaning by the filter, and the electrostatic atomizer is contaminated with dust in the air and its function Is hardly damaged.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an example of an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the above.
FIG. 3 is a plan view showing a state in which the grid-like cover is removed,
FIG. 4 is a cross-sectional view of another example of the above.
FIG. 5 is a longitudinal sectional view of an example of an air cleaner according to the present invention.
FIG. 6 is a cross-sectional view of the above.
FIG. 7 is an explanatory diagram showing an outline of an electrostatic atomizer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electrostatic atomizer 2 Application electrode 3 Counter electrode 4 Water absorbing body 5 Ionization needle 6 Water tank

Claims (5)

先端に針状霧化部を備えて水保持部から水を吸い上げる吸水体と、マイナスイオンを発生させるためのイオン化針と、上記水保持部の水と上記イオン化針とに負電圧を印加して上記吸水体で静電霧化を行わせるとともに上記イオン化針にコロナ放電を生じさせる印加電極と、該印加電極に負電圧を印加する高電圧発生源と、接地されているとともに上記吸水体と上記イオン化針の両者に対向している対向電極とを備えていることを特徴とするマイナスイオン発生機能付きの静電霧化装置。Applying a negative voltage to a water absorber that has a needle-like atomization part at the tip and sucks water from the water holding part, an ionization needle for generating negative ions, and water in the water holding part and the ionization needle An application electrode that causes electrostatic atomization in the water absorbent body and causes corona discharge in the ionization needle, a high voltage generation source that applies a negative voltage to the application electrode , a grounded and the water absorbent body and the above An electrostatic atomizer with a function of generating negative ions, comprising a counter electrode facing both of the ionization needles . 吸水体の針状霧化部と対向電極との間の距離よりもイオン化針と対向電極との間の距離の方が長くされていることを特徴とする請求項１記載のマイナスイオン発生機能付き静電霧化装置。 2. The negative ion generation function according to claim 1, wherein the distance between the ionization needle and the counter electrode is made longer than the distance between the needle-like atomization portion of the water absorbent and the counter electrode. Electrostatic atomizer. 複数本の吸水体がイオン化針を中心とする同心円状に並んでいることを特徴とする請求項１または２記載のマイナスイオン発生機能付き静電霧化装置。 The electrostatic atomizer with a negative ion generation function according to claim 1 or 2, wherein a plurality of water-absorbing bodies are arranged concentrically around an ionization needle . イオン化針はその他端が水保持部内に突出していることを特徴とする請求項１〜３のいずれかの項に記載のマイナスイオン発生機能付き静電霧化装置。 The electrostatic atomizer with a negative ion generation function according to claim 1, wherein the other end of the ionization needle protrudes into the water holding portion . 送風用のファン及び除塵用のフィルターを備えるとともに、ファン及びフィルターの下流側に請求項１〜４のいずれかの項に記載のマイナスイオン発生機能付き静電霧化装置が配されていることを特徴とする空気清浄機。It is equipped with the fan for ventilation, and the filter for dust removal, and the electrostatic atomizer with the negative ion generation function of any one of Claims 1-4 is arranged downstream of a fan and a filter. A featured air purifier.
JP2003159996A 2003-06-04 2003-06-04 Electrostatic atomizer with negative ion generation function and air purifier equipped with the same Expired - Lifetime JP4186718B2 (en)

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TW093115042A TWI243713B (en) 2003-06-04 2004-05-27 Electrostatic atomization device with function of creating negative ions and air purification device using the same

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