JP5317397B2 - Airflow generator - Google Patents

Airflow generator Download PDF

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JP5317397B2
JP5317397B2 JP2006183584A JP2006183584A JP5317397B2 JP 5317397 B2 JP5317397 B2 JP 5317397B2 JP 2006183584 A JP2006183584 A JP 2006183584A JP 2006183584 A JP2006183584 A JP 2006183584A JP 5317397 B2 JP5317397 B2 JP 5317397B2
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electrode
airflow
conductor
generation device
airflow generation
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JP2008016222A (en
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林　　和夫
元史 田中
祐之 安井
清 橋本
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Toshiba Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/002—Influencing flow of fluids by influencing the boundary layer
    • F15D1/0065—Influencing flow of fluids by influencing the boundary layer using active means, e.g. supplying external energy or injecting fluid
    • F15D1/0075—Influencing flow of fluids by influencing the boundary layer using active means, e.g. supplying external energy or injecting fluid comprising electromagnetic or electrostatic means for influencing the state of the fluid, e.g. for ionising the fluid or for generating a plasma
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
    • H05H1/2439—Surface discharges, e.g. air flow control
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
    • H05H1/2431—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes using cylindrical electrodes, e.g. rotary drums

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Plasma Technology (AREA)

Description

本発明は、放電の作用により気流を発生させる気流発生装置に関する。   The present invention relates to an airflow generation device that generates an airflow by the action of discharge.

放電により気流が誘起される現象は、イオン風と呼ばれ、その原理と応用については様々な分野で従来から研究されている（例えば、非特許文献１参照。）。このイオン風は、例えば、コロナ放電によって生成されたイオンが、対向電極に引かれて移動する途中で空気分子と衝突して空気分子に一方方向の運動量を与え、空気の流れを誘起することで発生する（例えば、非特許文献２参照。）。
電気学会論文誌第９７巻 第５号（１９７７年），ｐ２５９−ｐ２６６ 放電ハンドブック、社団法人電気学会、ｐ８０３ The phenomenon in which airflow is induced by discharge is called ion wind, and its principle and application have been studied in various fields in the past (for example, see Non-Patent Document 1). This ion wind is generated by, for example, inducing the air flow by colliding with air molecules while ions generated by corona discharge are attracted to the counter electrode and moving, giving air molecules one-way momentum. (For example, see Non-Patent Document 2).
Journal of the Institute of Electrical Engineers of Japan, Vol. 97, No. 5 (1977), p259-p266 Discharge Handbook, The Institute of Electrical Engineers of Japan, p803

上記した従来の放電による気流発生法は、対向した電極間に気流を誘起するものであり、自由空間に気流を噴出する構成を備える気流発生装置はなかった。また、コロナ放電による気流発生法では、コロナ放電で発生するイオン数が少ないので、体積流量や速度の大きな気流を誘起することはできなかった。   The above-described conventional airflow generation method using electric discharge induces an airflow between opposed electrodes, and there has been no airflow generation device having a configuration for ejecting an airflow into free space. In addition, in the method of generating airflow by corona discharge, the number of ions generated by corona discharge is small, so that an airflow having a large volumetric flow rate or speed cannot be induced.

そこで、本発明は、上記課題を解決するためになされたものであり、誘電体バリア放電による気流誘起現象により、自由空間に気流を噴出することができる気流発生装置を提供することを目的とする。   Accordingly, the present invention has been made to solve the above-described problems, and an object thereof is to provide an airflow generation device capable of ejecting an airflow into free space by an airflow inducing phenomenon caused by a dielectric barrier discharge. .

上記目的を達成するために、本発明の気流発生装置は、表面が誘電体で被覆された棒状の導電体からなる第１の電極と、前記第１の電極と平行に配設され、前記第１の電極の導電体と断面形状が異なる棒状の導電体からなる第２の電極と、前記第１の電極と前記第２の電極との間に交番電圧を印加可能な電圧印加機構とを備え、前記第１の電極と前記第２の電極との間における誘電体バリア放電により、所定の方向に気流を噴出することを特徴とする。 In order to achieve the above object, an airflow generation device of the present invention is provided with a first electrode made of a rod-shaped conductor whose surface is covered with a dielectric, and arranged in parallel with the first electrode. A second electrode made of a rod-shaped conductor having a cross-sectional shape different from that of the first electrode conductor, and a voltage application mechanism capable of applying an alternating voltage between the first electrode and the second electrode. An air current is ejected in a predetermined direction by dielectric barrier discharge between the first electrode and the second electrode.

この気流発生装置によれば、それぞれ断面形状が異なる第１の電極と第２の電極との間に、放電を生じさせることで、それぞれの電極の長手方向に対してほぼ垂直な一方方向に気流を噴出することができる。   According to this air flow generation device, by generating a discharge between the first electrode and the second electrode having different cross-sectional shapes, the air flow is generated in one direction substantially perpendicular to the longitudinal direction of each electrode. Can be erupted.

また、本発明の気流発生装置は、少なくとも一端面が曲面で形成され、表面が誘電体で被覆された導電体からなる第１の電極と、少なくとも一端面が曲面で形成され、かつ表面が誘電体で被覆された、前記第１の電極の導電体と断面形状が異なる導電体からなり、前記一端面が前記第１の電極の一端面に対向して配設された第２の電極と、前記第１の電極と前記第２の電極との間に交番電圧を印加可能な電圧印加機構とを備え、前記第１の電極と前記第２の電極との間における誘電体バリア放電により、所定の方向に気流を噴出することを特徴とする。 The airflow generation device of the present invention includes a first electrode made of a conductor having at least one end surface formed with a curved surface and a surface covered with a dielectric, at least one end surface formed with a curved surface, and the surface having a dielectric surface. A second electrode having a cross-sectional shape different from that of the conductor of the first electrode, which is covered with a body, and wherein the one end face is disposed to face one end face of the first electrode; A voltage applying mechanism capable of applying an alternating voltage between the first electrode and the second electrode, and a predetermined voltage is generated by dielectric barrier discharge between the first electrode and the second electrode. It is characterized by ejecting airflow in the direction of.

この気流発生装置によれば、第１の電極および第２の電極の曲面に形成された一端面どうしを対向させて配設することで、第１の電極において気流の流れの妨げることなく、効率よく気流を噴出することができる。   According to this air flow generation device, by arranging the one end surfaces formed on the curved surfaces of the first electrode and the second electrode so as to face each other, the efficiency of the air flow does not hinder the first electrode. Can blow out airflow well.

本発明の気流発生装置によれば、誘電体バリア放電による気流誘起現象により、自由空間に気流を噴出することができる。   According to the airflow generation device of the present invention, an airflow can be ejected into free space by an airflow inducing phenomenon caused by dielectric barrier discharge.

以下、本発明の一実施の形態について図面を参照して説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

（第１の実施の形態）
図１は、第１の実施の形態の気流発生装置１０を模式的に示した斜視図である。また、図２は、図１のＡ−Ａ断面を示す図である。 (First embodiment)
FIG. 1 is a perspective view schematically showing an airflow generation device 10 according to the first embodiment. FIG. 2 is a view showing a cross section taken along the line AA of FIG.

図１に示すように、気流発生装置１０は、第１の電極２０と、第２の電極３０と、第１の電極２０と第２の電極３０との間に電圧を印加する放電用電源４０とから主に構成されている。   As shown in FIG. 1, the airflow generation device 10 includes a first electrode 20, a second electrode 30, and a discharge power source 40 that applies a voltage between the first electrode 20 and the second electrode 30. And is composed mainly of.

第１の電極２０は、表面が誘電体２１で被覆された円柱状の導電体２２で構成される。また、第１の電極２０は、公知な導電性の材料で構成され、気流発生装置１０が使用される環境に応じて、公知な導電性の材料から適宜に第１の電極２０を構成する材料が選択される。誘電体２１は、公知な固体の誘電材料で構成される。誘電体２１を構成する材料として具体的には、電気的絶縁材料である、アルミナやガラスなどの無機絶縁物、ポリイミド、ガラスエポキシ、ゴムなどの有機絶縁物などが挙げられるが、これらに限られるものではなく、気流発生装置１０が使用される環境下において適宜に選択される。   The first electrode 20 is composed of a cylindrical conductor 22 whose surface is covered with a dielectric 21. Moreover, the 1st electrode 20 is comprised with a well-known electroconductive material, and the material which comprises the 1st electrode 20 suitably from a well-known electroconductive material according to the environment where the airflow generation apparatus 10 is used. Is selected. The dielectric 21 is made of a known solid dielectric material. Specific examples of the material constituting the dielectric 21 include, but are not limited to, an electrically insulating material such as an inorganic insulator such as alumina or glass, an organic insulator such as polyimide, glass epoxy, or rubber. It is not a thing and it selects suitably in the environment where the airflow generator 10 is used.

第２の電極３０は、第１の電極２０の導電体２２と断面形状が異なる円柱状の導電体３１で構成され、空隙を設けて第１の電極２０と平行に配設されている。なお、図１に示した一例では、導電体３１がコ字状に構成されているが、少なくとも第１の電極２０と平行に位置する部分を有している。また、図２に示すように、第２の電極３０の導電体３１は、第１の電極２０の導電体２２よりも直径の小さい柱体で構成されている。また、第２の電極３０は、第１の電極２０と同様の材料で構成される。なお、第２の電極３０を第１の電極２０に当接させて配設してもよい。また、導電体３１の表面を誘電体で被覆して第２の電極３０を構成してもよい。   The second electrode 30 is composed of a columnar conductor 31 having a cross-sectional shape different from that of the conductor 22 of the first electrode 20, and is disposed in parallel with the first electrode 20 with a gap. In the example shown in FIG. 1, the conductor 31 is configured in a U shape, but has at least a portion positioned in parallel with the first electrode 20. In addition, as shown in FIG. 2, the conductor 31 of the second electrode 30 is constituted by a column having a smaller diameter than the conductor 22 of the first electrode 20. The second electrode 30 is made of the same material as the first electrode 20. The second electrode 30 may be disposed in contact with the first electrode 20. Alternatively, the second electrode 30 may be configured by covering the surface of the conductor 31 with a dielectric.

ここで、第１の電極２０の導電体２２や第２の電極３０の導電体３１は、柱体に限らず、筒体であってもよい。また、導電体３１の直径は、導電体２２の直径よりも大きくてもよい。さらに、導電体２２および導電体３１の断面形状は、円形に限らず、例えば楕円、矩形、多角形などの形状で構成されてもよく、また、導電体２２および／または導電体３１を薄板などで構成してもよい。また、第１の電極２０および第２の電極３０が、それぞれ面対称な形状で形成され、対称面を共有するように構成されてもよい。すなわち、第１の電極２０の導電体２２と第２の電極３０の導電体３１とを構成する棒状の導電体の断面形状がそれぞれ異なればよい。   Here, the conductor 22 of the first electrode 20 and the conductor 31 of the second electrode 30 are not limited to pillars, but may be cylinders. Further, the diameter of the conductor 31 may be larger than the diameter of the conductor 22. Furthermore, the cross-sectional shapes of the conductor 22 and the conductor 31 are not limited to a circle, and may be configured to be an ellipse, a rectangle, a polygon, or the like, and the conductor 22 and / or the conductor 31 may be a thin plate or the like. You may comprise. Further, the first electrode 20 and the second electrode 30 may be formed to have a plane-symmetric shape and share a plane of symmetry. That is, it is only necessary that the cross-sectional shapes of the rod-shaped conductors constituting the conductor 22 of the first electrode 20 and the conductor 31 of the second electrode 30 are different.

放電用電源４０は、電圧印加機構として機能し、第１の電極２０と第２の電極３０との間に、ケーブル４１を介して電圧を印加するものである。放電用電源４０からの出力電圧は、例えば、パルス状（正極性、負極性、正負の両極性（交番電圧））や交流状（正弦波、断続正弦波）の波形を有する出力電圧などである。具体的には、例えば、放電用電源４０は高周波電源装置などで構成される。なお、誘電体バリア放電において、第１の電極２０と第２の電極３０との間に直流電圧を印加すると、放電の進展とともに誘電体表面に電荷が蓄積して第１の電極２０と第２の電極３０との間の電界が緩和され、最終的には電界が空間の電離を維持できなくなり、放電が停止する。したがって、誘電体表面に蓄電された電荷を除去することができる、パルス状の正負の両極性電圧である交番電圧や交流電圧を第１の電極２０と第２の電極３０との間に印加することが好ましい。   The discharge power supply 40 functions as a voltage application mechanism, and applies a voltage via the cable 41 between the first electrode 20 and the second electrode 30. The output voltage from the discharge power supply 40 is, for example, an output voltage having a pulse-like (positive polarity, negative polarity, both positive and negative polarities (alternating voltage)) or alternating current (sine wave, intermittent sine wave) waveform. . Specifically, for example, the discharge power supply 40 is constituted by a high-frequency power supply device or the like. In the dielectric barrier discharge, when a DC voltage is applied between the first electrode 20 and the second electrode 30, electric charges accumulate on the dielectric surface as the discharge progresses, and the first electrode 20 and the second electrode 20 The electric field between the first electrode 30 and the second electrode 30 is relaxed. Eventually, the electric field cannot maintain the ionization of the space, and the discharge stops. Therefore, an alternating voltage or an alternating voltage, which is a pulsed positive and negative bipolar voltage that can remove the electric charge stored on the dielectric surface, is applied between the first electrode 20 and the second electrode 30. It is preferable.

次に、気流発生装置１０の作用について説明する。   Next, the operation of the airflow generation device 10 will be described.

放電用電源４０から第１の電極２０と第２の電極３０との間に電圧が印加され、一定の閾値以上の電位差となると、第１の電極２０と第２の電極３０との間に誘電体バリア放電５０が起こり、この誘電体バリア放電５０に伴って放電プラズマが生成される。ここで、第１の電極２０の導電体２２は誘電体２１に被覆され、すなわち、第１の電極２０の導電体２２と第２の電極３０の導電体３１との間に誘電体２１を介在させているので、高温下や含塵環境下においてもアーク放電にはいたらず、安定に維持することが可能な誘電体バリア放電５０が生じる。また、誘電体バリア放電５０は、第１の電極２０と第２の電極３０との間に、それぞれの電極に対してほぼ垂直方向に生じる。図１および図２に示すように、この誘電体バリア放電５０によって、第１の電極２０および第２の電極３０に垂直な一方の方向に気流５５が噴出される。なお、ここでは、第１の電極２０および第２の電極３０にほぼ垂直で、第２の電極３０から第１の電極２０に向かう方向に気流５５が噴出される一例を示している。この場合、第１の電極２０と第２の電極３０との間で生じた気流５５は、第１の電極２０の表面に沿って第１の電極２０にほぼ垂直な方向に噴出する。   When a voltage is applied between the first electrode 20 and the second electrode 30 from the discharge power supply 40 and a potential difference equals or exceeds a certain threshold value, a dielectric is generated between the first electrode 20 and the second electrode 30. A body barrier discharge 50 occurs, and a discharge plasma is generated along with the dielectric barrier discharge 50. Here, the conductor 22 of the first electrode 20 is covered with the dielectric 21, that is, the dielectric 21 is interposed between the conductor 22 of the first electrode 20 and the conductor 31 of the second electrode 30. Therefore, the dielectric barrier discharge 50 that can be stably maintained without being subjected to the arc discharge even under a high temperature or dusty environment is generated. Further, the dielectric barrier discharge 50 is generated between the first electrode 20 and the second electrode 30 in a direction substantially perpendicular to the respective electrodes. As shown in FIGS. 1 and 2, the dielectric barrier discharge 50 causes an air flow 55 to be ejected in one direction perpendicular to the first electrode 20 and the second electrode 30. Here, an example is shown in which an air flow 55 is ejected in a direction from the second electrode 30 toward the first electrode 20 and substantially perpendicular to the first electrode 20 and the second electrode 30. In this case, the airflow 55 generated between the first electrode 20 and the second electrode 30 is ejected along the surface of the first electrode 20 in a direction substantially perpendicular to the first electrode 20.

ここで、噴出する気流５５の電極長手方向の幅は、第１の電極２０の導電体２２と第２の電極３０の導電体３１における長手方向の長さに依存する。すなわち、図１に示すように、第２の電極３０の導電体３１の長手方向の長さが、第１の電極２０の導電体２２の長手方向の長さよりも短い場合には、噴出する気流５５の電極長手方向の幅は、第２の電極３０の導電体３１の長さとほぼ同程度となる。一方、第２の電極３０の導電体３１の長手方向の長さが、第１の電極２０の導電体２２の長手方向の長さよりも長い場合には、噴出する気流５５の電極長手方向の幅は、第１の電極２０の導電体２２の長さとほぼ同程度となる。上記したように、噴出する気流５５の電極長手方向の幅は、第１の電極２０の導電体２２と第２の電極３０の導電体３１における長手方向の長さに依存するので、例えば、図１に示した気流発生装置１０において、長手方向にわたって幅広く気流５５を発生させたい場合には、第２の電極３０における第１の電極２０と平行な部分の長手方向の長さを長くすることで対応可能となる。なお、噴出する気流５５は、下流に流れるとともに広がるので、ここでいう気流５５の電極長手方向の幅とは、気流５５噴出時における電極長手方向の幅を意味する。   Here, the width in the electrode longitudinal direction of the jetted airflow 55 depends on the length in the longitudinal direction of the conductor 22 of the first electrode 20 and the conductor 31 of the second electrode 30. That is, as shown in FIG. 1, when the length in the longitudinal direction of the conductor 31 of the second electrode 30 is shorter than the length in the longitudinal direction of the conductor 22 of the first electrode 20, The width of the electrode 55 in the longitudinal direction is approximately the same as the length of the conductor 31 of the second electrode 30. On the other hand, when the length of the conductor 31 of the second electrode 30 in the longitudinal direction is longer than the length of the conductor 22 of the first electrode 20 in the longitudinal direction, the width of the jetted air flow 55 in the electrode longitudinal direction Is substantially the same as the length of the conductor 22 of the first electrode 20. As described above, the width of the jetted airflow 55 in the longitudinal direction of the electrode depends on the length in the longitudinal direction of the conductor 22 of the first electrode 20 and the conductor 31 of the second electrode 30. In the air flow generation device 10 shown in FIG. 1, when it is desired to generate the air flow 55 widely in the longitudinal direction, the length in the longitudinal direction of the portion parallel to the first electrode 20 in the second electrode 30 is increased. It becomes possible to respond. Since the jetted airflow 55 flows downstream and spreads, the width in the electrode longitudinal direction of the airflow 55 here means the width in the electrode longitudinal direction when the airflow 55 is jetted.

上記したように、第１の実施の形態の気流発生装置１０によれば、表面が誘電体２１で被覆された棒状の導電体２２からなる第１の電極２０と、第１の電極２０と平行に配設され、第１の電極２０の導電体２２と断面形状が異なる棒状の導電体３１からなる第２の電極３０との間に電圧を印加し、誘電体バリア放電を生じさせることで、それぞれの電極に対してほぼ垂直方向に気流を噴出することができる。   As described above, according to the airflow generation device 10 of the first embodiment, the first electrode 20 including the rod-shaped conductor 22 whose surface is covered with the dielectric 21 and the first electrode 20 are parallel to each other. By applying a voltage between the conductor 22 of the first electrode 20 and the second electrode 30 made of a rod-shaped conductor 31 having a different cross-sectional shape, and generating a dielectric barrier discharge, An airflow can be ejected in a direction substantially perpendicular to each electrode.

なお、噴出する気流５５の流動形態は、第１の電極２０の形態に依存する。ここで、第１の電極２０とは異なる形態を有する第１の電極を備えた第１の実施の形態の気流発生装置１０の他の例を示す。図３および図４は、第１の実施の形態の気流発生装置１０の他の例の断面を模式的に示した図である。   Note that the flow form of the jetted air flow 55 depends on the form of the first electrode 20. Here, another example of the airflow generation device 10 according to the first embodiment including the first electrode having a form different from that of the first electrode 20 will be described. 3 and 4 are diagrams schematically showing a cross section of another example of the airflow generation device 10 of the first exemplary embodiment.

図３に示す気流発生装置１０の他の一例では、第１の電極６０は、断面が気流の噴出方向に長軸を有する楕円形状に形成された棒状の導電体６１と、この導電体６１の表面を被覆する誘電体６２とから構成されている。誘電体６２は、導電体６１の形状に沿って表面を被覆しているので、第１の電極６０の断面も気流の噴出方向に長軸を有する楕円形状となる。また、第２の電極３０の断面の直径方向の延長上に、楕円の長軸が位置するように第１の電極６０が配置されている。なお、第１の電極６０の導電体６１の断面は、第１の電極６０の断面が気流の噴出方向に長軸を有する楕円形状を有していれば、楕円形状に限らず、円形、矩形などの形状でもよい。   In another example of the airflow generation device 10 shown in FIG. 3, the first electrode 60 includes a rod-shaped conductor 61 whose cross section is formed in an elliptical shape having a major axis in the airflow ejection direction, and the conductor 61 It is comprised from the dielectric material 62 which coat | covers the surface. Since the dielectric 62 covers the surface along the shape of the conductor 61, the cross section of the first electrode 60 also has an elliptical shape having a long axis in the direction of jetting airflow. In addition, the first electrode 60 is disposed so that the major axis of the ellipse is positioned on the diametrical extension of the cross section of the second electrode 30. Note that the cross section of the conductor 61 of the first electrode 60 is not limited to the elliptical shape as long as the cross section of the first electrode 60 has an elliptical shape having a major axis in the air flow ejection direction. It may be a shape such as

図３に示すように、この誘電体バリア放電６５によって、第１の電極６０および第２の電極３０にほぼ垂直な一方の方向に気流７０が噴出される。ここでは、第１の電極６０および第２の電極３０にほぼ垂直で、第２の電極３０から第１の電極６０に向かう方向に気流７０が噴出される一例を示している。この場合、第１の電極６０と第２の電極３０との間で生じた気流７０は、第１の電極６０の楕円形状の表面に沿って第１の電極６０にほぼ垂直な方向に噴出する。   As shown in FIG. 3, the dielectric barrier discharge 65 ejects an air flow 70 in one direction substantially perpendicular to the first electrode 60 and the second electrode 30. Here, an example is shown in which an airflow 70 is ejected in a direction from the second electrode 30 toward the first electrode 60 and substantially perpendicular to the first electrode 60 and the second electrode 30. In this case, the airflow 70 generated between the first electrode 60 and the second electrode 30 is ejected along the elliptical surface of the first electrode 60 in a direction substantially perpendicular to the first electrode 60. .

このように、第１の電極６０の断面を楕円形状にすることで、第１の電極６０において気流７０の流れの妨げることなく、効率よく気流７０を噴出することができることができる。   Thus, by making the cross section of the first electrode 60 elliptical, the air flow 70 can be efficiently ejected without obstructing the flow of the air flow 70 in the first electrode 60.

また、図４に示す気流発生装置１０の他の一例では、第１の電極８０は、断面が気流の噴出方向に長軸を有する楕円形状に形成された棒状の導電体８１と、断面が気流の噴出方向に徐々に広がり、端部が曲面を有し、かつ第２の電極３０に対向する側が鋭角となる形状に導電体８１の表面を被覆する誘電体８２とから構成されている。すなわち、第１の電極８０の断面は、気流の噴出方向に徐々に広がり、端部が曲面を有し、かつ第２の電極３０に対向する側が鋭角となる形状となる。また、第２の電極３０の断面の直径方向の延長上に、導電体８１における楕円の長軸が位置するように第１の電極８０が配置されている。なお、第１の電極８０の導電体８１の断面は、第１の電極８０の断面が、気流の噴出方向に徐々に広がり、端部が曲面を有し、かつ第２の電極３０に対向する側が鋭角となる形状を有していれば、楕円形状に限らず、円形、矩形などの形状でもよい。   In another example of the airflow generation device 10 shown in FIG. 4, the first electrode 80 includes a rod-shaped conductor 81 whose cross section is formed in an elliptical shape having a major axis in the airflow ejection direction, and a cross section of the airflow generator 10. And a dielectric 82 that covers the surface of the conductor 81 in a shape that has a curved surface at the end, a curved surface at the end, and an acute angle on the side facing the second electrode 30. That is, the cross section of the first electrode 80 gradually expands in the direction of jetting the airflow, the end has a curved surface, and the side facing the second electrode 30 has an acute angle. In addition, the first electrode 80 is arranged so that the major axis of the ellipse of the conductor 81 is located on the extension in the diameter direction of the cross section of the second electrode 30. Note that the cross section of the conductor 81 of the first electrode 80 is such that the cross section of the first electrode 80 gradually expands in the direction of air flow, the end has a curved surface, and faces the second electrode 30. As long as it has a shape with an acute angle on the side, the shape is not limited to an elliptical shape but may be a shape such as a circle or a rectangle.

図４に示すように、この誘電体バリア放電８５によって、第１の電極８０および第２の電極３０にほぼ垂直な一方の方向に気流９０が噴出される。ここでは、第１の電極８０および第２の電極３０にほぼ垂直で、第２の電極３０から第１の電極８０に向かう方向に気流９０が噴出される一例を示している。この場合、第１の電極８０と第２の電極３０との間で生じた気流９０は、第１の電極８０の表面に沿って流れ、噴出方向に徐々に広がり、第１の電極８０にほぼ垂直な方向に噴出する。   As shown in FIG. 4, the dielectric barrier discharge 85 causes an airflow 90 to be ejected in one direction substantially perpendicular to the first electrode 80 and the second electrode 30. Here, an example is shown in which an airflow 90 is ejected in a direction from the second electrode 30 toward the first electrode 80 substantially perpendicular to the first electrode 80 and the second electrode 30. In this case, the airflow 90 generated between the first electrode 80 and the second electrode 30 flows along the surface of the first electrode 80, gradually spreads in the ejection direction, and substantially flows into the first electrode 80. Spout in a vertical direction.

このように、第１の電極８０の断面を、気流の噴出方向に徐々に広がり、端部が曲面を有し、かつ第２の電極３０に対向する側が鋭角となる形状にすることで、第１の電極８０において気流９０の流れの妨げることなく、効率よく気流９０を噴出することができる。   Thus, the first electrode 80 has a cross section that gradually expands in the direction of air flow, has a curved end, and has an acute angle on the side facing the second electrode 30. The airflow 90 can be efficiently ejected without interfering with the flow of the airflow 90 at one electrode 80.

（第２の実施の形態）
図５は、第２の実施の形態の気流発生装置１００の断面を模式的に示した図である。また、図６は、第２の実施の形態の気流発生装置１００の他の一例の断面を模式的に示した図である。なお、第１の実施の形態の気流発生装置１０の構成と同一部分には、同一の符号を付して重複する説明を省略または簡略する。 (Second Embodiment)
FIG. 5 is a diagram schematically illustrating a cross section of the airflow generation device 100 according to the second embodiment. Moreover, FIG. 6 is the figure which showed typically the cross section of the other example of the airflow generation apparatus 100 of 2nd Embodiment. In addition, the same code | symbol is attached | subjected to the same part as the structure of the airflow generation device 10 of 1st Embodiment, and the overlapping description is abbreviate | omitted or simplified.

図５に示すように、気流発生装置１００は、第１の電極２０と、２つの第２の電極３０と、第１の電極２０と第２の電極３０との間に電圧を印加する放電用電源４０とから主に構成されている。この気流発生装置１００は、第１の実施の形態の気流発生装置１０において、第１の電極２０と平行に第２の電極３０を複数配置した構成となっている。また、各第２の電極３０は、第１の電極２０から等しい距離に配設され、すなわち、第１の電極２０の同一の同心円上に配設されている。なお、配置される第２の電極３０は、２つに限られるものではなく、適宜に２つ以上の第２の電極３０を配置してもよい。また、各第２の電極３０は、それぞれケーブル４１を介して放電用電源４０に接続されている。   As shown in FIG. 5, the airflow generation device 100 is for discharge that applies a voltage between the first electrode 20, the two second electrodes 30, and the first electrode 20 and the second electrode 30. It is mainly composed of a power supply 40. This airflow generation device 100 has a configuration in which a plurality of second electrodes 30 are arranged in parallel to the first electrode 20 in the airflow generation device 10 of the first embodiment. In addition, each second electrode 30 is disposed at an equal distance from the first electrode 20, that is, is disposed on the same concentric circle of the first electrode 20. Note that the number of second electrodes 30 to be arranged is not limited to two, and two or more second electrodes 30 may be appropriately arranged. Each second electrode 30 is connected to a discharge power supply 40 via a cable 41.

次に、気流発生装置１００の作用について説明する。   Next, the operation of the airflow generation device 100 will be described.

放電用電源４０から第１の電極２０と各第２の電極３０との間に電圧が印加され、一定の閾値以上の電位差となると、第１の電極２０と各第２の電極３０との間に誘電体バリア放電５０が起こり、この誘電体バリア放電５０に伴って放電プラズマが生成される。また、誘電体バリア放電５０は、第１の電極２０と各第２の電極３０との間に、それぞれの電極に対してほぼ垂直方向に生じる。なお、ここでは、誘電体バリア放電５０によって、第１の電極２０および第２の電極３０にほぼ垂直で、第１の電極２０に向かう方向に気流１１０が噴出される一例を示している。この場合、気流１１０は、一方の第２の電極３０と第１の電極２０との間に発生した気流と、他方の第２の電極３０と第１の電極２０との間に発生した気流とが合流した気流である。   When a voltage is applied between the first electrode 20 and each of the second electrodes 30 from the discharge power supply 40 and a potential difference equal to or greater than a certain threshold value is reached, the voltage between the first electrode 20 and each of the second electrodes 30 is reduced. Then, a dielectric barrier discharge 50 occurs, and a discharge plasma is generated along with the dielectric barrier discharge 50. Further, the dielectric barrier discharge 50 is generated between the first electrode 20 and each second electrode 30 in a direction substantially perpendicular to the respective electrodes. Here, an example is shown in which an air flow 110 is ejected by the dielectric barrier discharge 50 in a direction substantially perpendicular to the first electrode 20 and the second electrode 30 and toward the first electrode 20. In this case, the airflow 110 includes an airflow generated between one second electrode 30 and the first electrode 20, and an airflow generated between the other second electrode 30 and the first electrode 20. Is a merged airflow.

このように、複数の第２の電極３０を設けることで、気流１１０の厚さ方向への広がり、すなわち、図５の断面において、第１の電極２０の下流における上下方向の気流１１０の広がりを促進させることができる。また、各第２の電極３０の配設位置を変更することで、気流１１０の噴出方向を調整することが可能となる。   In this way, by providing the plurality of second electrodes 30, the airflow 110 spreads in the thickness direction, that is, in the cross section of FIG. 5, the vertical airflow 110 spreads downstream of the first electrode 20. Can be promoted. Moreover, it becomes possible to adjust the ejection direction of the airflow 110 by changing the arrangement position of each second electrode 30.

また、図６に示す第２の実施の形態の気流発生装置１００の他の一例では、第１の実施の形態の気流発生装置１０おける、第１の電極２０と平行に配置された第２の電極３０を、第１の電極２０との距離を一定に維持しながら、その配設位置を変更可能（図６のＸ方向に位置を変更可能）に構成している。   Further, in another example of the airflow generation device 100 of the second embodiment shown in FIG. 6, the second airflow arranged in parallel with the first electrode 20 in the airflow generation device 10 of the first embodiment. The electrode 30 is configured such that its arrangement position can be changed (position can be changed in the X direction in FIG. 6) while maintaining a constant distance from the first electrode 20.

このように、第２の電極３０の配設位置を変更可能に設けることで、任意に気流１２５の噴出方向を変更することができる。また、第２の電極３０は、第１の電極２０との距離を一定に維持しながら配設位置を変更することができるので、一定の印加電圧を負荷した場合には、噴出方向の異なる一定の噴出速度を有する気流１２５を発生させることができる。   Thus, by providing the arrangement position of the second electrode 30 so as to be changeable, the ejection direction of the airflow 125 can be arbitrarily changed. Moreover, since the arrangement position of the second electrode 30 can be changed while keeping the distance from the first electrode 20 constant, when a constant applied voltage is applied, the second electrode 30 is constant in different ejection directions. It is possible to generate an air flow 125 having an ejection speed of.

（第３の実施の形態）
図７は、第３の実施の形態の気流発生装置２００を模式的に示した斜視図である。なお、第１の実施の形態の気流発生装置１０の構成と同一部分には、同一の符号を付して重複する説明を省略または簡略する。 (Third embodiment)
FIG. 7 is a perspective view schematically showing an airflow generation device 200 according to the third embodiment. In addition, the same code | symbol is attached | subjected to the same part as the structure of the airflow generation device 10 of 1st Embodiment, and the overlapping description is abbreviate | omitted or simplified.

図７に示すように、気流発生装置２００は、第１の電極２１０と、第２の電極２２０と、ケーブル４１を介して第１の電極２１０と第２の電極２２０との間に電圧を印加する放電用電源４０とから主に構成されている。   As shown in FIG. 7, the airflow generation device 200 applies a voltage between the first electrode 210, the second electrode 220, and the first electrode 210 and the second electrode 220 via the cable 41. It is mainly comprised from the power supply 40 for discharge.

第１の電極２１０は、球状の導電体２１１の表面を、少なくとも一端面２１３が曲面で、かつ円柱状になるように誘電体２１２で被覆して構成されている。   The first electrode 210 is configured by covering the surface of a spherical conductor 211 with a dielectric 212 so that at least one end surface 213 is a curved surface and a columnar shape.

第２の電極２２０は、少なくとも一端面２２２が曲面で形成された、第１の電極２１０の導電体２１１と断面形状が異なる導電体２２１で構成され、所定の空隙を設けて一端面２２２を第１の電極２１０の一端面２１３に対向させて配設されている。なお、第２の電極２２０を第１の電極２１０に当接させて配設してもよい。さらに、導電体２２１の表面を誘電体で被覆して第２の電極２２０を構成してもよい。この場合、第１の電極２１０と対向する側における第２の電極２２０の導電体２２１の端面は曲面で形成されることが好ましい。   The second electrode 220 is composed of a conductor 221 having a cross-sectional shape different from that of the conductor 211 of the first electrode 210, at least one end surface 222 of which is formed as a curved surface. The one electrode 210 is disposed to face one end surface 213. Note that the second electrode 220 may be disposed in contact with the first electrode 210. Further, the second electrode 220 may be configured by covering the surface of the conductor 221 with a dielectric. In this case, the end surface of the conductor 221 of the second electrode 220 on the side facing the first electrode 210 is preferably formed with a curved surface.

ここで、第１の電極２１０の導電体２１１として、球状の形状を有するものを一例に挙げているが、特に形状は限定されるものではなく、例えば、棒状などであってもよい。また、第２の電極２２０の導電体２２１において、表面が誘電体で被覆される場合には、導電体２１１と同様に、導電体２２１の形状は特に限定されるものではない。   Here, the conductor 211 of the first electrode 210 has a spherical shape as an example, but the shape is not particularly limited, and may be, for example, a rod shape. In the case where the surface of the conductor 221 of the second electrode 220 is covered with a dielectric, the shape of the conductor 221 is not particularly limited as in the case of the conductor 211.

なお、第１の電極２１０および第２の電極２２０を構成する材料は、第１の実施の形態の気流発生装置１０における第１の電極２０および第２の電極３０材料と同様である。   In addition, the material which comprises the 1st electrode 210 and the 2nd electrode 220 is the same as that of the 1st electrode 20 and the 2nd electrode 30 material in the airflow generation apparatus 10 of 1st Embodiment.

次に、気流発生装置２００の作用について説明する。   Next, the operation of the airflow generation device 200 will be described.

放電用電源４０から第１の電極２１０と第２の電極２２０との間に電圧が印加され、一定の閾値以上の電位差となると、第１の電極２１０の一端面２１３と第２の電極２２０の一端面２２２との間に誘電体バリア放電２３０が起こり、この誘電体バリア放電２３０に伴って放電プラズマが生成される。なお、ここでは、誘電体バリア放電２３０によって、第２の電極２２０から第１の電極２１０に向かう方向に気流２４０が噴出される一例を示している。この場合、気流２４０は、第１の電極２１０の一端面２１３および側面に沿って流れ、第１の電極２１０の下流においては、中空の筒体状の流れが形成される。なお、第１の電極２１０の一端面２１３の曲率半径によっては、一端面２１３に沿って流れた後、側面に沿わずに放射状に広がる流れを形成する場合もある。   When a voltage is applied between the first electrode 210 and the second electrode 220 from the discharge power supply 40 and a potential difference equals or exceeds a certain threshold value, the one end surface 213 of the first electrode 210 and the second electrode 220 A dielectric barrier discharge 230 occurs between the one end face 222 and discharge plasma is generated along with the dielectric barrier discharge 230. Here, an example is shown in which an air flow 240 is ejected from the second electrode 220 toward the first electrode 210 by the dielectric barrier discharge 230. In this case, the air flow 240 flows along the one end surface 213 and the side surface of the first electrode 210, and a hollow cylindrical flow is formed downstream of the first electrode 210. Depending on the radius of curvature of the one end surface 213 of the first electrode 210, a flow that radially spreads along the one end surface 213 and then along the one end surface 213 may be formed.

第３の実施の形態の気流発生装置２００によれば、曲面に形成された一端面どうしを対向させて、第１の電極２１０と第２の電極２２０と配設することで、第１の電極２１０において気流２４０の流れの妨げることなく、効率よく気流２４０を噴出することができる。また、第１の電極２１０の一端面２１３における曲率半径を変更することで、第１の電極２１０に沿う流れや、一端面２１３に沿って流れた後、放射状に広がる流れなどを形成することができる。   According to the airflow generation device 200 of the third embodiment, the first electrode 210 and the second electrode 220 are disposed so that the one end surfaces formed on the curved surface are opposed to each other, whereby the first electrode The airflow 240 can be efficiently ejected at 210 without hindering the flow of the airflow 240. In addition, by changing the radius of curvature at the one end surface 213 of the first electrode 210, a flow along the first electrode 210 or a flow spreading radially after flowing along the one end surface 213 can be formed. it can.

（気流発生装置の配列形態例）
上記した本発明の気流発生装置は、単体でも使用することはできるが、複数の気流発生装置を所定の形態に配列して使用してもよい。そこで、ここでは、気流発生装置の配列形態について例を挙げて、図８〜図１０を参照して説明する。なお、気流発生装置の配列形態は、これらの形態に限られるものではなく、適宜に用途に応じて形態を変更することができる。 (Example of arrangement of airflow generator)
The above-described airflow generation device of the present invention can be used alone, but a plurality of airflow generation devices may be arranged in a predetermined form. Therefore, here, an example of the arrangement form of the airflow generation devices will be described with reference to FIGS. In addition, the arrangement | sequence form of an airflow generator is not restricted to these forms, A form can be changed suitably according to a use.

図８〜図１０は、複数の気流発生装置１０を所定の形態に配列した断面を模式的に示した図である。なお、ここでは、図１に示した第１の実施の形態に係る気流発生装置１０を用いて、配列例を示しているが、他の実施の形態に係る気流発生装置においても同様に配列して使用することができる。   FIGS. 8-10 is the figure which showed typically the cross section which arranged the several airflow generation apparatus 10 in the predetermined form. Here, although the arrangement example is shown by using the airflow generation device 10 according to the first embodiment shown in FIG. 1, the airflow generation devices according to other embodiments are similarly arranged. Can be used.

図８に示すように、所定の間隔をおいて、縦方向（気流の発生方向に対して垂直な方向）に複数の気流発生装置１０を配設してもよい。例えば、ダクトの断面にわたって気流発生装置１０をこのように配設することで、ダクト断面にわたって均一な気流を発生させることができる。   As shown in FIG. 8, a plurality of airflow generation devices 10 may be arranged in a vertical direction (a direction perpendicular to the airflow generation direction) at a predetermined interval. For example, by disposing the airflow generation device 10 over the cross section of the duct in this way, a uniform airflow can be generated over the duct cross section.

また、図９に示すように、所定の間隔をおいて、縦方向（気流の発生方向に対して垂直な方向）に複数の気流発生装置１０を配設し、さらに、これらの気流発生装置１０における気流の噴出方向に所定の間隔をおいて、これらの気流発生装置１０と千鳥配列となるように、複数の気流発生装置１０を配設してもよい。例えば、ダクトの断面にわたって気流発生装置１０をこのように配設することで、ダクト断面にわたってより均一な気流を発生させることができる。   As shown in FIG. 9, a plurality of airflow generation devices 10 are arranged in a vertical direction (a direction perpendicular to the airflow generation direction) at a predetermined interval, and these airflow generation devices 10 are further arranged. A plurality of airflow generation devices 10 may be arranged so as to form a staggered arrangement with these airflow generation devices 10 at a predetermined interval in the airflow ejection direction in FIG. For example, by disposing the airflow generation device 10 over the cross section of the duct in this way, a more uniform airflow can be generated over the duct cross section.

また、図１０に示すように、縦方向（気流の発生方向に対して垂直な方向）に複数の気流発生装置１０を配設し、さらに、これらの気流発生装置１０における気流の噴出方向に所定の間隔をおいて、これらの気流発生装置１０の配置方向から９０度回転させた向きに、すなわち、これらの気流発生装置１０の長手方向に対して、長手方向が垂直となる配置方向（格子状）になるように、複数の気流発生装置１０を配設してもよい。例えば、ダクトの断面にわたって気流発生装置１０をこのように配設することで、ダクト断面にわたってより均一な気流を発生させることができる。   Also, as shown in FIG. 10, a plurality of air flow generation devices 10 are arranged in the vertical direction (direction perpendicular to the air flow generation direction), and predetermined in the air flow ejection direction of these air flow generation devices 10. In the direction rotated 90 degrees from the arrangement direction of these airflow generation devices 10, that is, in the arrangement direction (lattice shape) in which the longitudinal direction is perpendicular to the longitudinal direction of these airflow generation devices 10 A plurality of airflow generation devices 10 may be arranged so that For example, by disposing the airflow generation device 10 over the cross section of the duct in this way, a more uniform airflow can be generated over the duct cross section.

（実施例）
次に、以下に本発明の実施例について説明する。 (Example)
Next, examples of the present invention will be described below.

ここでは、本発明に係る気流発生装置によって噴出される気流の可視化を行った。さらに、本発明に係る気流発生装置から噴出された気流の推力（Thrust）を測定した。   Here, the airflow ejected by the airflow generation device according to the present invention was visualized. Furthermore, the thrust (Thrust) of the airflow ejected from the airflow generator according to the present invention was measured.

図１１は、気流発生装置によって噴出される気流５５を可視化した画像である。図１２および図１３は、噴出された気流５５の推力の測定方法を説明するための図である。図１４は、測定された気流５５の推力の結果を示す図である。なお、ここでは、図１に示した第１の実施の形態に係る気流発生装置１０を用いて、気流の可視化や気流の推力の測定を行った。   FIG. 11 is an image in which the airflow 55 ejected by the airflow generation device is visualized. 12 and 13 are diagrams for explaining a method of measuring the thrust force of the jetted airflow 55. FIG. FIG. 14 is a diagram showing the results of the measured thrust of the airflow 55. Here, airflow visualization and airflow thrust measurement were performed using the airflow generation device 10 according to the first embodiment shown in FIG.

図１１に示すように、第１の電極２０の近傍に配設された線香３００の煙３０１を流引させて気流５５を可視化することで、第１の電極２０と第２の電極３０との間に起こった誘電体バリア放電５０によって発生した気流が、第１の電極２０の長手方向にほぼ垂直な方向に噴出していることがわかった。なお、この可視化画像は、後述する気流の推力の測定に用いる気流発生装置１０を用いて、放電用電源４０から印加する電圧の周波数を３ｋＨｚとし、電力を３Ｗとしたときの画像である。   As shown in FIG. 11, the smoke 301 of the incense stick 300 disposed in the vicinity of the first electrode 20 is flown and the airflow 55 is visualized, whereby the first electrode 20 and the second electrode 30 are visualized. It was found that the airflow generated by the dielectric barrier discharge 50 that occurred in between was ejected in a direction substantially perpendicular to the longitudinal direction of the first electrode 20. Note that this visualized image is an image when the frequency of the voltage applied from the discharge power supply 40 is 3 kHz and the power is 3 W using the airflow generation device 10 used for measuring the thrust of the airflow described later.

次に、噴出された気流の推力の測定方法について説明する。   Next, a method for measuring the thrust of the jetted airflow will be described.

図１２および図１３に示すように、気流５５が噴出される方向に、第１の電極２０から５ｍｍの間隔をあけて推力測定用振り子４００が配設されている。この推力測定用振り子４００は、気流５５を衝突させる衝突板４１０と、一端に衝突板４１０が固定され、他端が図示しない支点で回動可能に固定された支持部材４１１とで構成されている。また、推力測定用振り子４００は、支持部材４１１が支点で回動可能に固定されているので、衝突板４１０に気流５５を衝突させた際、推力測定用振り子４００は、上記した支点を中心に気流５５の噴出方向に移動することができる。   As shown in FIGS. 12 and 13, a thrust measurement pendulum 400 is disposed in the direction in which the airflow 55 is ejected, with a spacing of 5 mm from the first electrode 20. The thrust measurement pendulum 400 includes a collision plate 410 that causes the air flow 55 to collide, and a support member 411 that has the collision plate 410 fixed at one end and rotatably supported at a fulcrum (not shown). . Further, since the supporting member 411 is fixed to be pivotable at the fulcrum of the thrust measuring pendulum 400, when the airflow 55 collides with the collision plate 410, the thrust measuring pendulum 400 is centered on the fulcrum described above. The airflow 55 can be moved in the ejection direction.

ここで、第１の電極２０の導電体２２には、タングステンからなる直径が１．０ｍｍの棒状電極を用い、第２の電極３０の導電体３１には、ステンレス鋼からなる直径が１.０ｍｍの棒状電極を用いた。また、第２の電極３０において、第１の電極２０と平行となる部分の長さを３０ｍｍとした。第１の電極２０において、導電体２２を被覆する誘電体２１には、ガラスを用い、その被覆厚さを１．１ｍｍとした。また、推力測定用振り子４００を構成する衝突板４１０は、プラスチックからなる縦（Ｌ）が２０ｍｍ、横（Ｍ）が４０ｍｍ、厚さ（ｔ）が０．５ｍｍの板を使用した。なお、推力測定用振り子４００の重さは９.８ｍＮである。また、支持部材４１１は、ステンレス鋼からなる直径が１．０ｍｍの棒で構成され、その長さを１２５ｍｍとした。   Here, a rod-shaped electrode made of tungsten having a diameter of 1.0 mm is used for the conductor 22 of the first electrode 20, and a diameter made of stainless steel is 1.0 mm for the conductor 31 of the second electrode 30. The rod-shaped electrode was used. In the second electrode 30, the length of the portion parallel to the first electrode 20 was set to 30 mm. In the first electrode 20, glass is used for the dielectric 21 that covers the conductor 22, and the coating thickness is 1.1 mm. Further, the collision plate 410 constituting the thrust measurement pendulum 400 was a plate made of plastic having a length (L) of 20 mm, a width (M) of 40 mm, and a thickness (t) of 0.5 mm. The weight of the thrust measurement pendulum 400 is 9.8 mN. The support member 411 is made of a stainless steel rod having a diameter of 1.0 mm, and its length is set to 125 mm.

また、図１３に示すように、気流５５が衝突板４１０に衝突し、推力測定用振り子４００が振れ角θで振れた場合、次の式（１）の関係が成立する。
ｄ ＝ Ｌ・ｔａｎθ …式（１）
ここで、ｄは、気流５５の噴出方向への衝突板４１０の移動距離である。 As shown in FIG. 13, when the airflow 55 collides with the collision plate 410 and the thrust measurement pendulum 400 swings at the swing angle θ, the relationship of the following equation (1) is established.
d = L · tan θ Formula (1)
Here, d is the moving distance of the collision plate 410 in the jet direction of the airflow 55.

一方、推力測定用振り子４００の重さをＷ、気流の推力をＦとすれば、力の釣り合いから次の式（２）が成立する。
Ｆ ＝ Ｗ・ｔａｎθ …式（２） On the other hand, if the weight of the thrust measurement pendulum 400 is W and the thrust of the airflow is F, the following equation (2) is established from the balance of forces.
F = W · tan θ (2)

上記した式（１）、式（２）および測定されたｄを用いて、気流の推力Ｆを求めることができる。   The thrust F of the airflow can be obtained using the above-described equations (1) and (2) and the measured d.

本実施例では、気流の推力は、放電用電源４０から印加する電圧の周波数を、１１、１４、１６ｋＨｚとし、それぞれ負荷電力（Ｗ）を変化させて測定した。   In this example, the thrust of the airflow was measured by setting the frequency of the voltage applied from the discharge power supply 40 to 11, 14, and 16 kHz, and changing the load power (W), respectively.

図１４に示すように、噴出される気流５５によって推力が発生し、負荷電力の増加に伴って、気流の推力が増加していることがわかった。   As shown in FIG. 14, it was found that thrust was generated by the jetted airflow 55, and that the thrust of the airflow increased as the load power increased.

以上、本発明を実施の形態により具体的に説明したが、本発明はこれらの実施の形態にのみ限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能である。   Although the present invention has been specifically described above with reference to the embodiments, the present invention is not limited to these embodiments, and various modifications can be made without departing from the scope of the invention.

第１の実施の形態の気流発生装置を模式的に示した斜視図。The perspective view which showed typically the airflow generator of 1st Embodiment. 図１のＡ−Ａ断面を示す図。The figure which shows the AA cross section of FIG. 第１の実施の形態の気流発生装置の他の例の断面を模式的に示した図。The figure which showed typically the cross section of the other example of the airflow generator of 1st Embodiment. 第１の実施の形態の気流発生装置の他の例の断面を模式的に示した図。The figure which showed typically the cross section of the other example of the airflow generator of 1st Embodiment. 第２の実施の形態の気流発生装置の断面を模式的に示した図。The figure which showed typically the cross section of the airflow generator of 2nd Embodiment. 第２の実施の形態の気流発生装置の他の一例の断面を模式的に示した図。The figure which showed typically the cross section of the other example of the airflow generation apparatus of 2nd Embodiment. 第３の実施の形態の気流発生装置を模式的に示した斜視図。The perspective view which showed typically the airflow generator of 3rd Embodiment. 複数の気流発生装置を所定の形態に配列した断面を模式的に示した図。The figure which showed typically the cross section which arranged the several airflow generation apparatus in the predetermined form. 複数の気流発生装置を所定の形態に配列した断面を模式的に示した図。The figure which showed typically the cross section which arranged the several airflow generation apparatus in the predetermined form. 複数の気流発生装置を所定の形態に配列した断面を模式的に示した図。The figure which showed typically the cross section which arranged the several airflow generation apparatus in the predetermined form. 気流発生装置によって噴出される気流を可視化した画像。The image which visualized the air current spouted by the air flow generator. 噴出された気流の推力の測定方法を説明するための図。The figure for demonstrating the measuring method of the thrust of the jetted airflow. 噴出された気流の推力の測定方法を説明するための図。The figure for demonstrating the measuring method of the thrust of the jetted airflow. 測定された気流の推力の結果を示す図。The figure which shows the result of the thrust of the measured airflow.

符号の説明Explanation of symbols

１０…気流発生装置、２０…第１の電極、２１…誘電体、２２…導電体、３０…第２の電極、３１…導電体、４０…放電用電源、４１…ケーブル、５０…誘電体バリア放電、５５…気流。   DESCRIPTION OF SYMBOLS 10 ... Airflow generator, 20 ... 1st electrode, 21 ... Dielectric, 22 ... Conductor, 30 ... 2nd electrode, 31 ... Conductor, 40 ... Power supply for discharge, 41 ... Cable, 50 ... Dielectric barrier Discharge, 55 ... air flow.

Claims (12)

表面が誘電体で被覆された棒状の導電体からなる第１の電極と、
前記第１の電極と平行に配設され、前記第１の電極の導電体と断面形状が異なる棒状の導電体からなる第２の電極と、
前記第１の電極と前記第２の電極との間に交番電圧を印加可能な電圧印加機構と
を備え、
前記第１の電極と前記第２の電極との間における誘電体バリア放電により、所定の方向に気流を噴出することを特徴とする気流発生装置。 A first electrode made of a rod-shaped conductor whose surface is coated with a dielectric;
A second electrode made of a rod-shaped conductor disposed in parallel with the first electrode and having a cross-sectional shape different from that of the conductor of the first electrode;
A voltage application mechanism capable of applying an alternating voltage between the first electrode and the second electrode;
An airflow generating apparatus characterized by ejecting an airflow in a predetermined direction by dielectric barrier discharge between the first electrode and the second electrode. 前記第１の電極の導電体および前記第２の電極の導電体が、それぞれ直径の異なる円筒体で構成されていることを特徴とする請求項１記載の気流発生装置。   The airflow generation device according to claim 1, wherein the conductor of the first electrode and the conductor of the second electrode are formed of cylindrical bodies having different diameters. 前記第１の電極の導電体および前記第２の電極の導電体のうち、一方の導電体が断面矩形の柱体で構成されていることを特徴とする請求項１記載の気流発生装置。   2. The airflow generation device according to claim 1, wherein one of the conductor of the first electrode and the conductor of the second electrode is formed of a column having a rectangular cross section. 前記第１の電極および前記第２の電極が、それぞれ面対称な形状であり、対称面を共有していることを特徴とする請求項１記載の気流発生装置。 2. The airflow generation device according to claim 1, wherein the first electrode and the second electrode each have a plane-symmetric shape and share a plane of symmetry . 前記第２の電極の導電体の表面が誘電体で被覆されていることを特徴とする請求項１乃至４のいずれか１項記載の気流発生装置。 5. The airflow generation device according to claim 1, wherein a surface of the conductor of the second electrode is covered with a dielectric . 6. 少なくとも一端面が曲面で形成され、表面が誘電体で被覆された導電体からなる第１の電極と、
少なくとも一端面が曲面で形成され、かつ表面が誘電体で被覆された、前記第１の電極の導電体と断面形状が異なる導電体からなり、前記一端面が前記第１の電極の一端面に対向して配設された第２の電極と、
前記第１の電極と前記第２の電極との間に交番電圧を印加可能な電圧印加機構と
を備え、
前記第１の電極と前記第２の電極との間における誘電体バリア放電により、所定の方向に気流を噴出することを特徴とする気流発生装置。 A first electrode formed of a conductor having at least one end surface formed of a curved surface and a surface covered with a dielectric;
At least one end surface is formed of a curved surface, and the surface is covered with a dielectric, and the first electrode is made of a conductor having a different cross-sectional shape, and the one end surface is formed on one end surface of the first electrode. A second electrode disposed oppositely;
A voltage application mechanism capable of applying an alternating voltage between the first electrode and the second electrode;
With
An airflow generating apparatus characterized by ejecting an airflow in a predetermined direction by dielectric barrier discharge between the first electrode and the second electrode . 前記第１の電極と前記第２の電極との間に空隙が設けられていることを特徴とする請求項１乃至６のいずれか１項記載の気流発生装置。 The airflow generation device according to claim 1 , wherein a gap is provided between the first electrode and the second electrode . 前記第１の電極と前記第２の電極とが当接して配設されていることを特徴とする請求項１乃至６のいずれか１項記載の気流発生装置。 The airflow generation device according to any one of claims 1 to 6, wherein the first electrode and the second electrode are disposed in contact with each other . 前記第１の電極および前記第２の電極のうち、一方の電極が、他方の電極との距離を一定に維持しながら位置を変更可能に設けられていることを特徴とする請求項１乃至４のいずれか１項記載の気流発生装置。 5. One of the first electrode and the second electrode is provided such that the position thereof can be changed while maintaining a constant distance from the other electrode. The airflow generation device according to any one of the above. 前記第１の電極および前記第２の電極のうち、気流の噴出方向側に位置する電極とは異なる側の電極が複数の電極で構成され、前記複数の電極のそれぞれが前記気流の噴出方向側に位置する電極と平行に配設されていることを特徴とする請求項１乃至４のいずれか１項記載の気流発生装置。 Of the first electrode and the second electrode, an electrode on a side different from the electrode located on the airflow ejection direction side is composed of a plurality of electrodes, and each of the plurality of electrodes is on the airflow ejection direction side. The airflow generation device according to any one of claims 1 to 4 , wherein the airflow generation device is disposed in parallel with an electrode positioned on the surface. 前記電圧印加機構が、高周波電源で構成されていることを特徴とする請求項１乃至１０のいずれか１項記載の気流発生装置。 The airflow generation device according to any one of claims 1 to 10 , wherein the voltage application mechanism includes a high-frequency power source . 請求項１乃至１１のいずれか１項記載の気流発生装置を複数所定の形態に配置して構成されたことを特徴とする気流発生装置。 An airflow generation device comprising a plurality of airflow generation devices according to claim 1 arranged in a predetermined form .
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