WO2011161992A1 - イオン風発生体、イオン風発生装置及びイオン風発生方法 - Google Patents
イオン風発生体、イオン風発生装置及びイオン風発生方法 Download PDFInfo
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- WO2011161992A1 WO2011161992A1 PCT/JP2011/056393 JP2011056393W WO2011161992A1 WO 2011161992 A1 WO2011161992 A1 WO 2011161992A1 JP 2011056393 W JP2011056393 W JP 2011056393W WO 2011161992 A1 WO2011161992 A1 WO 2011161992A1
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- electrode
- ion wind
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T23/00—Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T19/00—Devices providing for corona discharge
Definitions
- the present invention relates to an ion wind generator, an ion wind generator, and an ion wind generating method.
- Patent Document 1 An apparatus that generates an ion wind induced by the movement of electrons or ions is known.
- an alternating current voltage is applied to two electrodes separated by a dielectric material to generate a dielectric barrier discharge, thereby generating an ion wind.
- Patent Document 1 as a method of using the ionic wind, it is exemplified that the ionic wind is generated so as to flow along the surface of the blade, thereby suppressing separation of the boundary layer.
- An ion wind generator includes a first electrode and a second electrode that are applied with a voltage and induce an ion wind by a discharge, and the ion wind is more than the first electrode and the second electrode. And an electric field forming member for forming an electric field for accelerating the ion wind in the downstream region.
- the ion wind generator according to the second aspect of the present invention applies a voltage to the first electrode, the second electrode, the first electrode, and the second electrode to discharge the first electrode and the second electrode.
- a method for generating an ion wind the step of applying a voltage to the first electrode and the second electrode to induce an ion wind by discharging, and the ion ion more than the first electrode and the second electrode. Forming an electric field in a downstream area of the wind to accelerate the ion wind.
- the speed of the ion wind can be increased.
- FIG. 1 is a perspective view schematically showing an ion wind generator 1 according to a first embodiment of the present invention.
- the ion wind generator 1 is configured as a device that generates an ion wind that flows in the direction indicated by the arrow y1.
- the direction in which the ion wind flows may be referred to as the x direction, the width direction of the ion wind as the y direction, and the height direction of the ion wind as the z direction.
- the ion wind generator 1 includes an ion wind generator 3 that generates an ion wind and a drive unit 5 that drives and controls the ion wind generator 3.
- the ion wind generator 3 includes a dielectric 7 and a first electrode 9, a second electrode 11, and a third electrode 13 provided on the dielectric 7.
- the dielectric 7 is formed, for example, in a flat plate shape having a constant thickness, and has a first main surface 7a and a second main surface 7b on the back surface thereof. As indicated by an arrow y1, the ion wind flows along the first main surface 7a on the first main surface 7a.
- the planar shape of the dielectric 7 may be an appropriate shape, but FIG. 1 illustrates a case where the dielectric 7 is a rectangle having sides parallel to the x direction and the y direction.
- the dielectric 7 may be formed of an inorganic insulator or an organic insulator.
- the inorganic insulator include ceramic and glass.
- ceramics include aluminum oxide sintered bodies (alumina ceramics), glass ceramic sintered bodies (glass ceramics), mullite sintered bodies, aluminum nitride sintered bodies, cordierite sintered bodies, and silicon carbide sintered bodies. Examples include union.
- the organic insulator include polyimide, epoxy, and rubber.
- the dielectric 7 when the dielectric 7 is formed of an aluminum oxide sintered body, the dielectric 7 is formed by a ceramic green sheet lamination method.
- the ceramic green sheet is prepared by adding a suitable organic solvent and a solvent to raw powders such as alumina (Al 2 O 3 ), silica (SiO 2 ), calcia (CaO), and magnesia (MgO) and mixing them with a doctor blade. It is formed by forming into a sheet shape by a forming method such as a method or a calender roll method.
- the first electrode 9 is provided on the first main surface 7a, and the second electrode 11 is provided on the second main surface 7b. Thereby, the first electrode 9 and the second electrode 11 are separated (insulated) by the dielectric 7.
- the second electrode 11 is located on the downstream side of the ion wind with respect to the first electrode 9 (one side in the direction (x direction) along the first main surface 7a (predetermined surface) of the dielectric 7) In the embodiment, the second electrode 11 as a whole is included.
- the first electrode 9 and the second electrode 11 may partially overlap in the x direction when the first main surface 7a of the dielectric 7 is viewed in plan, or are adjacent to each other without a gap. Alternatively, they may be separated by a predetermined gap.
- the third electrode 13 is provided on the first main surface 7a. That is, it is provided on the same surface as the first electrode 9.
- the third electrode 13 is arranged in the x direction so as to be separated from the second electrode 11 on the side opposite to the first electrode 9 (on the downstream side of the ion wind).
- the first electrode 9, the second electrode 11, and the third electrode 13 are, for example, formed in a layer shape (including a flat plate shape) with a constant thickness.
- the planar shape of these electrodes may be an appropriate shape, but FIG. 1 illustrates a case where the electrodes are rectangular having sides parallel to the x direction and the y direction. Note that the lengths of these electrodes in the y direction are set to be the same, for example.
- the first electrode 9, the second electrode 11, and the third electrode 13 are made of a conductive material such as metal. These electrodes may be formed by an appropriate thin film forming method and patterning method, or may be formed by printing a conductive paste. These electrodes may be provided by joining a metal plate to the dielectric 7 with an organic resin adhesive, glass, or metal.
- the metal examples include tungsten, molybdenum, manganese, copper, silver, gold, palladium, platinum, nickel, cobalt, and alloys containing these as a main component.
- the conductive paste is produced, for example, by adding an organic solvent and an organic binder to a metal powder such as tungsten, molybdenum, copper, or silver and mixing them.
- the conductive paste may be added with a dispersant, a plasticizer, or the like as necessary.
- Mixing is performed by kneading means such as a ball mill, a three-roll mill, or a planetary mixer.
- This conductive paste is printed and applied to a predetermined position of the ceramic green sheet that becomes the dielectric 7 by using a printing means such as a screen printing method, and is simultaneously baked, whereby the first electrode 9, the second electrode 11 and the third electrode The electrode 13 can be formed.
- the conductive paste When the conductive paste is fired at the same time as the ceramic green sheet, it is necessary to match the sintering behavior of the ceramic green sheet or to increase the bonding strength with the sintered dielectric by relaxing the residual stress. Glass or ceramic powder may be added.
- the dimension and material of the 1st electrode 9, the 2nd electrode 11, and the 3rd electrode 13 may mutually be the same, and may mutually differ.
- the drive unit 5 includes an AC power supply device 15 that applies an AC voltage to the first electrode 9 and the second electrode 11, a DC power supply device 17 that applies a DC voltage to the third electrode 13, an AC power supply device 15, and a DC power supply device. 17 and a control device 19 for controlling 17.
- the alternating current voltage applied by the alternating current power supply device 15 may be expressed by a sine wave or the like, with the potential changing continuously, or with a pulsed change in potential. Good.
- the alternating voltage may be one in which the potential fluctuates in both the first electrode 9 and the second electrode 11, or one of the first electrode 9 and the second electrode 11 is connected to the reference potential, Only the potential may vary with respect to the reference potential.
- the fluctuation of the potential may be positive or negative with respect to the reference potential, or may be positive or negative with respect to the reference potential.
- the DC power supply device 17 applies a DC voltage to the third electrode 13 without forming a closed loop. That is, only the positive terminal or the negative terminal of the DC power supply device 17 is connected to the third electrode 13, and a closed loop through which a current from the DC power supply device 17 flows is not configured.
- the control device 19 controls, for example, on / off of voltage application by the AC power supply device 15 and the DC power supply device 17 according to a predetermined sequence or according to a user operation, or the magnitude of the applied voltage. .
- the dimensions of the dielectric 7, the first electrode 9, the second electrode 11, and the third electrode 13, the magnitude and frequency of the AC voltage, and the magnitude of the DC voltage are technologies to which the ion wind generator 1 is applied. Alternatively, it may be set as appropriate according to various circumstances such as required properties of ion wind.
- FIG. 2 is a view including a side view of the ion wind generator 3 for explaining the operation of the ion wind generator 1.
- the upper left graph in FIG. 2 shows the change in potential of the first electrode 9.
- the upper right graph in FIG. 2 shows the change in potential of the third electrode 13.
- the horizontal axis indicates time t and the vertical axis indicates potential.
- FIG. 2 illustrates a case where the potential of the first electrode 9 fluctuates in both positive and negative directions with respect to the reference potential, and a negative potential is applied to the third electrode 13.
- the second electrode 11 may be provided with a potential opposite to that of the first electrode 9 or may be provided with a reference potential.
- the ion wind generator 3 is placed in the atmosphere, and air exists around the ion wind generator 3.
- the ion wind generator 3 may be used by being placed in a specific type of gas atmosphere (for example, in a nitrogen atmosphere).
- Electrons or ions in the plasma move due to the electric field formed by the first electrode 9 and the second electrode 11. Neutral molecules also move with electrons or ions. In this way, an ionic wind is induced.
- the ion wind is a region overlapping with the second electrode 11 on the first major surface 7a by electrons or ions moving from the first electrode 9 side to the second electrode 11 side. And flows from the first electrode 9 side to the second electrode 11 side.
- the potential of the first electrode 9 fluctuates both positive and negative with respect to the reference potential, in other words, the potential of the first electrode 9 is the second electrode.
- the direction of the electric field formed by the first electrode 9 and the second electrode 11 is also reversed. Therefore, the sign of the electric charge moving in the direction from the first electrode 9 side to the second electrode 11 side as indicated by the arrow y3 is also changed.
- the second electrode 11 is connected from the first electrode 9 side.
- the charge moving in the direction toward the side is either positive or negative.
- the ion wind can be accelerated by attracting electrons or ions contained in the ion wind to the third electrode 13 side. That is, if a positive potential is applied to the third electrode 13, a negative charge is attracted to the third electrode, and if a negative potential is applied to the third electrode 13, a positive charge is attracted to the third electrode. It is done.
- the third electrode 13 can attract negative or positive charges and accelerate the ion wind regardless of whether a positive or negative DC voltage is applied.
- the moving distance of the electrons due to the attractive force between the third electrode 13 and the electrons is longer than the moving distance of the ions due to the repulsive force between the third electrode and the ions.
- the length in which the acceleration of the ion wind to the downstream side is promoted is longer than the length in which the acceleration is limited.
- the range in which plasma (in this case, electrons) exists can be widened toward the third electrode 13 by the above attractive force.
- the probability of giving kinetic energy to molecules such as ambient air increases. Therefore, the influence of repulsive force can be suppressed and the ion wind can be effectively accelerated.
- a negative DC voltage is applied to the third electrode 13, the reverse is true.
- the ion wind can be accelerated by the attractive force between the third electrode 13 and the ions.
- the potential of one of the first electrode 9 and the second electrode 11 varies only to one of positive or negative with respect to the other potential, in other words, the electric field generated by the first electrode 9 and the second electrode 11.
- the direction of is constant, it is preferable to set the positive / negative of the DC voltage applied to the third electrode 13 so that an electric field in the same direction as the electric field is formed by the third electrode 13.
- the electric field becomes stronger and the action of accelerating the ion wind increases as the absolute value V2 of the DC voltage applied to the third electrode 13 increases. If the absolute value V2 of the DC voltage is larger than the maximum absolute value V1 of the AC voltage, the direction of the electric field is constant regardless of the fluctuation of the AC voltage, and stable behavior of the ion wind is expected.
- the shorter the distance L between the first electrode 9 and the third electrode 13 the stronger the electric field and the higher the maximum velocity of the ion wind. Conversely, the longer the distance L, the faster the ion wind can be accelerated. Note that the work amount itself due to the electric field is defined by the potential difference, and the dependence on the distance L is considered to be low.
- the ion wind generator 3 is applied with voltage, and the first electrode 9 and the second electrode 11 that induce the ion wind by the discharge, and the first electrode 9 and the second electrode 11. And an electric field forming member (third electrode 13) for forming an electric field for accelerating the ion wind in the downstream area of the ion wind.
- the speed downstream of the ion wind can be increased. Moreover, the downstream area of ion wind can also be lengthened. Such an effect such as speed improvement can be obtained without making the configuration of the first electrode 9 and the second electrode 11 special or increasing the voltage applied to them. That is, it is easy to combine with various technical ideas related to conventional ion generators, and it is also easy to implement the present invention by improving existing products.
- the electric field forming member for forming an electric field in the downstream region of the ion wind is disposed on the downstream side of the ion wind with respect to the first electrode 9 and the second electrode 11, and a third electrode to which a DC voltage is applied without forming a closed loop. 13.
- an electric field can be formed in the downstream region of the ion wind by a simple method of adding an electrode. Furthermore, since the third electrode 13 does not constitute a closed loop, the power consumed in the third electrode 13 is only the power that flows when electrons or ions in the ion wind enter the third electrode 13. , Energy consumption is low. That is, the ion wind can be accelerated with less power consumption.
- the ion wind generator 3 further includes a dielectric 7 that separates the first electrode 9 and the second electrode 11.
- the first electrode 9, the second electrode 11, and the third electrode 13 are provided on the dielectric 7.
- a high-speed ion wind can be generated with a simple and easy-to-manufacture configuration in which electrodes are arranged on the dielectric 7 for performing dielectric barrier discharge.
- the dielectric 7 is formed in a plate shape.
- the first electrode 9 is a layered electrode parallel (stacked) to the first major surface 7 a of the dielectric 7.
- the second electrode 11 is a layered electrode parallel to the first main surface 7 a (stacked on the second main surface 7 b of the dielectric 7), and is one of the directions along the first main surface 7 a rather than the first electrode 9. It has a portion located on the side (positive side in the x direction).
- the third electrode 13 is a layered electrode parallel to (stacked on) the first major surface 7a, and is disposed on the one side (the positive side in the x direction) from the second electrode 11.
- the ion wind generator 3 can be formed using a well-known and commonly used manufacturing technique for forming electrodes on a substrate (including a multilayer substrate), a significant cost reduction is expected.
- the third electrode 13 is stacked on the first main surface 7a, the third electrode 13 is arranged in the downstream region of the ion wind flowing along the first main surface 7a, and the ion wind effectively Since the first main surface 7a and the first main surface 7a form a substantially flat surface, the third electrode 13 is also suppressed from becoming an ion wind resistance.
- the ion wind generator 1 of the present embodiment includes an AC power supply device 15 that applies a voltage to the first electrode 9 and the second electrode 11 and generates an ion wind by discharging the first electrode 9 and the second electrode 11. And an electric field forming unit (third electrode 13 and DC power supply device 17) for forming an electric field for accelerating the ion wind in a downstream area of the ion wind from the first electrode 9 and the second electrode 11. Therefore, the same effect as that of the ion wind generator 3 is obtained.
- the ion wind generating method of the present embodiment includes a step of applying a voltage to the first electrode 9 and the second electrode 11 to induce an ion wind by discharge, and an ion ion more than the first electrode 9 and the second electrode 11. Forming an electric field in the downstream region of the wind to accelerate the ion wind. Therefore, the same effect as that of the ion wind generator 3 is obtained.
- FIG. 3 is a perspective view schematically showing a main part of the ion wind generating device 101 of the second embodiment.
- the ion wind generator 101 is different from the ion wind generator 1 of the first embodiment only in the shape of the third electrode. Specifically, it is as follows.
- the third electrode 113 of the ion wind generator 103 is configured to change the distance from the first electrode 9.
- the third electrode 113 includes a long-distance portion 113a, a short-distance portion 113b having a shorter distance from the first electrode 9 than the long-distance portion 113a, and an intermediate portion that connects the long-distance portion 113a and the short-distance portion 113b. 113c.
- size in the flow direction (x direction) of these ion winds is substantially constant.
- the electric field between the first electrode 9 and the third electrode 113 becomes stronger as the distance between the first electrode 9 and the third electrode 13 becomes shorter. Accordingly, as indicated by the arrows y105a and y105b, the electric field between the first electrode 9 and the short distance portion 113b is stronger than the electric field between the first electrode 9 and the long distance portion 113a. As a result, the ion wind is accelerated on the upstream side of the short distance portion 113b on the short distance portion 113b side than on the far distance portion 113a side.
- the third electrode 113 is configured in a shape in which the distance from the first electrode 9 changes, in the ion wind width direction (y direction) Can add strength and weakness to the wind.
- FIG. 4 is a perspective view schematically showing a main part of the ion wind generator 201 of the third embodiment.
- the ion wind generator 201 is different from the ion wind generator 1 of the first embodiment only in the shape of the third electrode. Specifically, it is as follows.
- the third electrode 213 of the ion wind generator 203 is configured in a shape that changes in size in the ion wind flow direction (x direction).
- the third electrode 213 includes a narrow portion 213a and a large portion 213b that is larger in the x direction than the narrow portion 213a.
- the distance between the third electrode 213 and the first electrode 9 changes as the size in the x direction changes. Therefore, as in the second embodiment, as indicated by the arrows y205a and y205b, the electric field between the first electrode 9 and the large portion 213b is greater than the electric field between the first electrode 9 and the narrow portion 213a. Also become stronger. As a result, the ionic wind is accelerated on the upstream side of the large portion 213b on the large portion 213b side than on the narrow portion 213a side.
- the ion wind can be strengthened in the width direction (y direction) of the ion wind.
- FIG. 5 is a perspective view schematically showing a main part of the ion wind generator 301 of the fourth embodiment.
- the ion wind generator 301 is different from the ion wind generator 1 of the first embodiment only in the configuration of the third electrode and the DC power supply device. Specifically, it is as follows.
- the two third electrodes 313 have, for example, a shape obtained by dividing the third electrode 13 of the first embodiment in the width direction (y direction) of the ion wind, and are each formed in a rectangular shape, Are the same distance.
- the drive unit (reference numeral omitted) of the ion wind generator 301 can include a plurality (two in the present embodiment) of DC power supply devices 17A and 17B (hereinafter referred to as “two” in the present embodiment) so that voltages can be individually applied to the plurality of third electrodes 313. , A and B may be omitted).
- the plurality of DC power supply devices 17 may be regarded as one power supply device that can individually apply voltages to the plurality of third electrodes 313.
- the ion wind generator 301 can apply different voltages to the plurality of third electrodes 313 by the plurality of DC power supply devices 17.
- the control device 19 (FIG. 1) individually controls the magnitude of the applied voltage of the plurality of DC power supply devices 17.
- the control device 19 controls only on / off of the plurality of DC power supply devices 17, and different voltages are applied depending on the configuration of the plurality of DC power supply devices 17.
- the electric field between the first electrode 9 and the third electrode 313 increases as the applied voltage increases. Therefore, as illustrated in FIG. 5, when the voltage applied to the third electrode 313B is larger than the voltage applied to the third electrode 313A, as shown by arrows y305a and y305b, the first The electric field between the electrode 9 and the third electrode 313B is stronger than the electric field between the first electrode 9 and the third electrode 313A. As a result, the ion wind is accelerated on the third electrode 313B side than on the third electrode 313A side.
- a plurality of third electrodes 313 are provided in a direction intersecting the ion wind with respect to the pair of first electrodes 9 and second electrodes 11, and a plurality of DC power supply devices 17 are provided. Since it is possible to apply different DC voltages to the plurality of third electrodes 313, the ion wind can be strengthened in the width direction (y direction) of the ion wind.
- FIG. 6 is a perspective view schematically showing a main part of the ion wind generator 401 of the fifth embodiment.
- the ion wind generator 401 is different from the ion wind generator 1 of the first embodiment only in the shape of the third electrode.
- the third electrode 413 of the ion wind generator 403 is formed with a plurality of holes 413 h through which the ion wind passes. Specifically, it is as follows.
- the third electrode 413 is generally formed in a plate shape as a whole, is provided upright on the first main surface 7a, and faces the first electrode 9 and the second electrode 11 side.
- the planar shape of the third electrode 413 and the angle with respect to the first main surface 7a may be set as appropriate.
- the third electrode 413 is formed in a rectangular shape so as to be orthogonal to the first main surface 7a. It has been.
- the plurality of holes 413h penetrate the third electrode 413 in the direction from the first electrode 9 and second electrode 11 side to the third electrode 413 side.
- the shape, size, number, arrangement method, and the like of the plurality of holes 413h may be set as appropriate.
- a plurality of holes 413h are two-dimensionally arranged in the width direction (y direction) and height direction (z direction) of the ion wind, and the third electrode 413 is a mesh (network) electrode. The case is illustrated.
- the plurality of holes 413h in the mesh electrode may be arranged along the y direction and the z direction as illustrated in FIG. 6, or arranged along the diagonal direction of the rectangular third electrode 413. It may be distributed irregularly.
- the size and shape of the plurality of hole portions 413h may be the same as each other or different from each other.
- the distribution density of the plurality of hole portions 413h may be uniform or uneven.
- Such a third electrode 413 may be formed, for example, by drilling a metal plate.
- the drilling process is, for example, punching or etching.
- the third electrode 413 may be formed by combining a plurality of metal wires into an appropriate shape such as a lattice shape and bonding them.
- metal materials such as stainless steel, iron-nickel-cobalt alloy, aluminum, gold, silver, and copper may be appropriately selected.
- the fixing of the third electrode 413 to the dielectric 7 may be performed, for example, by forming a groove in the dielectric 7 and fitting the third electrode 413 into the groove. Further, for example, the third electrode 413 may be provided by being bonded to the dielectric 7 with an organic resin adhesive, glass, or metal. When joining (brazing) the third electrode 413 to the dielectric 7 with a metal, a metal layer for brazing is previously provided on the first main surface 7a of the dielectric 7 by a metallization method or the like. Is preferred.
- the hole 413h through which the ion wind passes is formed in the third electrode 413, the range in which the electric field is formed while suppressing an increase in resistance to the ion wind. Can be expanded in the direction crossing the ion wind (y direction and z direction). As a result, the ion wind can be accelerated in a wide range.
- the third electrode 413 is a mesh electrode that intersects the ion wind, the ion wind can be accelerated while suppressing an increase in resistance to the ion wind in a wide range intersecting the ion wind. Also, by making the size and density of the plurality of holes 413h uniform, the strength of the ion wind can be kept uniform, or conversely, by setting a bias in the size and density of the holes 413h , I can be strong or weak in the ionic wind.
- FIG. 7 is a cross-sectional view schematically showing a main part of the ion wind generator 501 of the sixth embodiment.
- the ion wind generator 501 is different from the ion wind generator 1 of the first embodiment only in that at least one of the first to third electrodes is embedded in a dielectric.
- buried is illustrated. Specifically, it is as follows.
- the dielectric 507 of the ion wind generator 503 includes a plurality of (in this embodiment, two illustrated) first dielectric layers 508A and second dielectric layers 508B (hereinafter simply referred to as “dielectric layers 508”) stacked together. There is.) That is, the dielectric 507 is configured by a stacked body of a plurality of dielectric layers 508.
- the plurality of dielectric layers 508 are formed in, for example, a rectangular flat plate shape and have the same size and shape.
- the first dielectric layer 508A constitutes the first main surface 507a of the dielectric 507.
- the second dielectric layer 508B constitutes the second main surface 507b of the dielectric 507.
- the 1st electrode 9 and the 3rd electrode 13 are arrange
- the second electrode 11 is disposed between the first dielectric layer 508A and the second dielectric layer 508B, and is thereby embedded in the dielectric 507.
- Such a dielectric 507 is formed, for example, by laminating and firing a dielectric layer 508 made of a ceramic green sheet or the like.
- the conductors such as the first to third electrodes are formed by being fixed to the dielectric 507 by, for example, disposing a conductive paste on the dielectric layer 508 before firing and firing it with the laminated dielectric layer 508. .
- the same effect as in the first embodiment can be obtained. Moreover, since the 2nd electrode 11 is embed
- FIG. 8 is a perspective view schematically showing a main part of the ion wind generator 601 of the seventh embodiment.
- the ion wind generator 601 is different from the ion wind generator 1 of the first embodiment in that the third electrode 613 is not provided on the dielectric 607. Specifically, it is as follows.
- the dielectric 607 has a size and shape sufficient to dispose the first electrode 9 and the second electrode 11.
- the dielectric 607 has a shape obtained by cutting out the third electrode 13 side of the dielectric 7 of the first embodiment.
- the first electrode 9 is disposed on the first major surface 607a and the second electrode 11 is disposed on the second major surface 607b, as in the first embodiment.
- the third electrode 613 is supported by a support member (not shown).
- the support member may be fixed to the dielectric 607, or may be connected to the dielectric 607 so as to be movable with respect to the dielectric 607. When the support member is movable, the movement may be performed manually or by power from a drive source such as a motor.
- the third electrode 613 can move in the x direction with respect to the dielectric 607, the distance between the first electrode 9 and the third electrode 613 changes, so the wind speed is changed by changing the strength of the electric field. Can be made. Further, if the third electrode 613 can move in the y direction or the z direction with respect to the dielectric 607, the direction in which the ion wind is accelerated can be changed.
- the shape of the third electrode 613 may be an appropriate shape.
- FIG. 8 illustrates a case where the third electrode 613 is formed in a bar shape having a rectangular cross section extending in the width direction (y direction) of the ion wind.
- the effect of accelerating the ion wind and increasing the wind speed can be obtained as in the first embodiment. Further, since the third electrode 613 is not provided on the dielectric 7, the degree of freedom in arrangement is high, and accordingly, the acceleration of the ion wind can be adjusted appropriately. Since no dielectric is interposed between the first electrode 9 and the third electrode 613, the dielectric constant is lowered, and a decrease in the strength of the electric field formed by the third electrode 613 is suppressed.
- FIG. 9 is a perspective view schematically showing a main part of the ion wind generator 701 of the eighth embodiment.
- the first electrode 709 is formed in a ring shape and disposed on the first main surface 707 a of the dielectric 707.
- the second electrode 711 is formed in a circular shape that fits inside the inner edge of the first electrode 709, and is disposed on the second main surface 707 b of the dielectric 707.
- the 3rd electrode 713 is arrange
- the third electrode 713 may have an appropriate shape.
- FIG. 9 illustrates the case where the third electrode 713 is a disk-shaped mesh electrode in which a plurality of holes 713h are formed.
- the effect of accelerating the ion wind and increasing the wind speed can be obtained as in the first embodiment.
- FIG. 10 is a perspective view schematically showing a main part of the ion wind generator 801 of the ninth embodiment.
- the dielectric 807 covers the second electrode 811.
- the first electrode 809, the second electrode 811, and the third electrode 813 are arranged in this order along the direction in which the ion wind flows as indicated by an arrow y801. These electrodes are fixed to each other or connected so as to be movable by an appropriate support member (not shown).
- the first electrode 809, the second electrode 811 and the third electrode 813 may have an appropriate shape.
- FIG. 10 illustrates the case where any electrode is formed in a rod shape with a circular cross section.
- an ion wind generator 803 when an AC voltage is applied to the first electrode 809 and the second electrode 811, an ion wind that flows from the first electrode 809 side to the second electrode 811 side is induced.
- the ion wind flows along the surface of the dielectric 807 and exceeds the dielectric 807.
- the ion wind is accelerated by the third electrode 813 to which a DC voltage is applied.
- the effect of accelerating the ion wind and increasing the wind speed can be obtained as in the first embodiment.
- the third electrodes 13, 113, 213, 313, 413, 613, 713, and 813 are examples of the electric field forming member of the present invention, and a combination of these third electrodes and the DC power supply device 17.
- the AC power supply device 15 is an example of the first power supply of the present invention
- the DC power supply device 17 (or a plurality of DC power supply devices 17) is an example of the second power supply of the present invention. It is.
- the present invention is not limited to the above embodiment, and may be implemented in various modes.
- the discharge that induces the ion wind is not limited to the dielectric barrier discharge.
- corona discharge may be used.
- the dielectric is not an essential requirement of the present invention.
- the voltage applied to the first electrode and the second electrode is not limited to an AC voltage, and may be a DC voltage. However, when dielectric barrier discharge is performed, an alternating voltage is applied in which one potential of the first electrode and the second electrode varies both positively and negatively with respect to the other potential so that the discharge is continuously performed. It is preferred that
- At least one of the first to third electrodes is a dielectric. May not be provided (may not be fixed). The dielectric only needs to separate the first electrode from the second electrode.
- the dielectric is not limited to a flat plate.
- the electrode may be covered.
- the plate-like dielectric is not limited to a flat surface, and may have a curved surface.
- the surface of the dielectric is preferably a curved surface that is continuous with the surface of the wing.
- the electrode is not limited to one disposed on the surface of the dielectric or embedded in the dielectric.
- the electrode may be disposed so as to be fitted into a recess formed in the dielectric and only the main surface of the electrode is exposed from the dielectric. In this case, the resistance of the ion wind by the electrode is reduced. Further, for example, only a part of the first electrode on the second electrode side may be exposed from the dielectric. In this case, input / output of charges in the first electrode can be suitably performed while protecting the first electrode.
- the arrangement relationship between the electrodes in the thickness direction of the dielectric is appropriately set. May be.
- all of the first to third electrodes may be embedded in the same layer (the same position in the thickness direction), or at least so that all of the first to third electrodes are arranged in different layers. Any one electrode may be embedded.
- the downstream region of the ion wind in which the electric field for acceleration is formed is the region opposite to the first electrode of the second electrode or the dielectric region. It is not limited to the area along the surface.
- the ionic wind induced by the first electrode and the second electrode passes through the tubular member and the wind direction is changed in an appropriate direction due to the bending of the tubular member, the ionic wind after the change of the wind direction is performed.
- An electric field may be formed so as to accelerate.
- the downstream side of the ion wind on which the third electrode is disposed is not limited to the opposite side of the second electrode to the first electrode.
- the electric field is not limited to that which only accelerates the ion wind with the flow direction of the ion wind as the direction of the electric field. That is, the electric field may be a direction that obliquely intersects the flow direction of the ion wind, and changes or adjusts not only the acceleration but also the flow direction of the ion wind.
- the third electrode need not have the same size as the first and second electrodes in the width direction (y direction) of the ion wind.
- the third electrode may exist only in a part of the ion wind in the width direction and accelerate only a part of the ion wind.
- the third electrode may be larger than the first and second electrodes.
- the third electrode whose distance to the first electrode as exemplified in the second and third embodiments (FIGS. 3 and 4) is changed in the distance in the ion wind width direction (y direction). It is not limited. For example, in the third electrode spreading in the width direction (y direction) and height direction (z direction) of the ion wind as shown in the fifth embodiment (FIG. 6), not only the y direction but also y Instead of the direction, the distance to the first electrode may change according to the position in the z direction.
- the third electrode having a very simple shape is illustrated, but the shape of the third electrode may be set as appropriate.
- the third electrode may have a shape extending in a zigzag manner in the width direction (y direction) of the ion wind or in a wavy shape, or may be a triangle or a circle.
- the third electrodes having such various shapes have the same position in the flow direction (x direction) of the ion wind with respect to the set of the first electrode and the second electrode, or positions in the x direction. May be arranged in the y direction or in the height direction of the ion wind (z direction).
- the plurality of third electrodes arranged in this manner may be applied with the same voltage, or may be applied with different voltages as illustrated in the fourth embodiment (FIG. 5).
- FIG. 5 By combining various shapes, arrangements, and voltages related to the third electrode as described above, it is possible to more suitably increase or decrease the ionic wind or to easily generate turbulence.
- the plurality of third electrodes have different positions in the y direction and / or z direction for the purpose of strengthening the ion wind in the width direction (y direction) and / or the height direction (z direction) of the ion wind. It is not limited to what is arranged.
- the third electrodes may be arranged along the ion wind flow direction (x direction) with the same position in the y direction and the z direction. In this case, for example, by applying a DC voltage so that the potential becomes higher toward the downstream side, the ion wind can be accelerated uniformly or non-uniformly over a long distance.
- the number of holes is limited to a plurality.
- the third electrode may be ring-shaped.
- the electrode in which the hole is formed is not limited to a plate-like one, and the plurality of holes need not be two-dimensionally arranged.
- a plurality of holes arranged in a line along the y direction may be formed.
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Abstract
Description
図1は、本発明の第1の実施形態に係るイオン風発生装置1を模式的に示す斜視図である。
Pa点:Ea=(V1-(-V2))/L=(V1+V2)/L
Pb点:Eb=0-(-V2)/L=V2/L
Pc点:Ec=(-V1-(-V2))/L=(-V1+V2)/2
図3は、第2の実施形態のイオン風発生装置101の要部を模式的に示す斜視図である。
図4は、第3の実施形態のイオン風発生装置201の要部を模式的に示す斜視図である。
図5は、第4の実施形態のイオン風発生装置301の要部を模式的に示す斜視図である。
図6は、第5の実施形態のイオン風発生装置401の要部を模式的に示す斜視図である。
図7は、第6の実施形態のイオン風発生装置501の要部を模式的に示す断面図である。
図8は、第7の実施形態のイオン風発生装置601の要部を模式的に示す斜視図である。
図9は、第8の実施形態のイオン風発生装置701の要部を模式的に示す斜視図である。
図10は、第9の実施形態のイオン風発生装置801の要部を模式的に示す斜視図である。
Claims (13)
- 電圧が印加され、放電によりイオン風を誘起する第1電極及び第2電極と、
前記第1電極及び前記第2電極よりも前記イオン風の下流域に前記イオン風を加速する電界を形成する電界形成部材と、
を有するイオン風発生体。 - 前記電界形成部材は、前記第1電極及び前記第2電極よりも前記イオン風の下流側に配置され、閉ループを構成しない状態で直流電圧が印加される第3電極である
請求項1に記載のイオン風発生体。 - 前記第1電極と前記第2電極とを隔てる誘電体を更に有し、
前記第1電極、前記第2電極及び前記第3電極は前記誘電体に設けられている
請求項2に記載のイオン風発生体。 - 前記誘電体は板状に形成されており、
前記第1電極は、前記誘電体の所定主面に平行な層状電極であり、
前記第2電極は、前記所定主面に平行な層状電極であり、前記第1電極よりも前記所定主面に沿う方向の一方側に位置する部分を有し、
前記第3電極は、前記所定主面に平行な層状電極であり、前記第2電極よりも前記一方側に配置されている
請求項3に記載のイオン風発生体。 - 前記第3電極には、前記イオン風が通過する孔部が形成されている
請求項2又は3に記載のイオン風発生体。 - 前記第3電極は、前記イオン風の流れ方向に交差するメッシュ状電極である
請求項5に記載のイオン風発生体。 - 前記第3電極は、前記第1電極との距離が変化する形状である
請求項2~6のいずれか1項に記載のイオン風発生体。 - 前記第3電極は、一対の前記第1電極及び前記第2電極に対して複数設けられている
請求項2~7のいずれか1項に記載のイオン風発生体。 - 第1電極と、
第2電極と、
前記第1電極及び前記第2電極に電圧を印加して前記第1電極及び前記第2電極に放電によりイオン風を誘起させる第1電源と、
前記第1電極及び前記第2電極よりも前記イオン風の下流域に前記イオン風を加速する電界を形成する電界形成部と、
を有するイオン風発生装置。 - 前記電界形成部は、
前記第1電極及び前記第2電極よりも前記イオン風の下流側に配置された第3電極と、
閉ループを構成しない状態で前記第3電極に直流電圧を印加する第2電源と、
を有する請求項9に記載のイオン風発生装置。 - 前記第1電源は、前記第1電極及び前記第2電極に交流電圧を印加し、
前記第2電源が印加する電圧の絶対値は、前記第1電源が印加する電圧の最大絶対値よりも大きい
請求項10に記載のイオン風発生装置。 - 前記第3電極は、一対の前記第1電極及び前記第2電極に対して複数設けられ、
前記第2電源は、前記複数の第3電極に互いに異なる大きさの直流電圧を印加可能である
請求項10又は11に記載のイオン風発生装置。 - 第1電極及び第2電極に電圧を印加して放電によりイオン風を誘起するステップと、
前記第1電極及び前記第2電極よりも前記イオン風の下流域に電界を形成して前記イオン風を加速するステップと、
を有するイオン風発生方法。
Priority Applications (4)
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EP11797880.9A EP2551972B1 (en) | 2010-06-22 | 2011-03-17 | Ion wind generating body, ion wind generating device and ion wind generating method |
CN201180016447.2A CN102823090B (zh) | 2010-06-22 | 2011-03-17 | 离子风产生体以及离子风产生装置 |
US13/638,540 US20130083446A1 (en) | 2010-06-22 | 2011-03-17 | Ion Wind Generator, Ion Wind Generating Apparatus, and Ion Wind Generating Method |
JP2012521346A JP5467152B2 (ja) | 2010-06-22 | 2011-03-17 | イオン風発生体及びイオン風発生装置 |
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US (1) | US20130083446A1 (ja) |
EP (1) | EP2551972B1 (ja) |
JP (1) | JP5467152B2 (ja) |
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WO (1) | WO2011161992A1 (ja) |
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WO2015173977A1 (ja) * | 2014-05-12 | 2015-11-19 | 株式会社 片野工業 | イオン・オゾン風発生装置及び方法 |
CN108054146A (zh) * | 2017-12-25 | 2018-05-18 | 中国矿业大学 | 基于离子风的平面膜式芯片散热装置 |
JP2020024845A (ja) * | 2018-08-07 | 2020-02-13 | トヨタ自動車株式会社 | イオン風生成機の制御方法 |
CN108054146B (en) * | 2017-12-25 | 2024-06-28 | 中国矿业大学 | Planar film type chip heat dissipation device based on ion wind |
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US20130083446A1 (en) * | 2010-06-22 | 2013-04-04 | Kyocera Corporation | Ion Wind Generator, Ion Wind Generating Apparatus, and Ion Wind Generating Method |
CN102959813B (zh) * | 2010-08-18 | 2014-05-07 | 京瓷株式会社 | 离子风发生体及离子风发生装置 |
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JP5467152B2 (ja) | 2014-04-09 |
CN102823090B (zh) | 2014-12-24 |
JPWO2011161992A1 (ja) | 2013-08-19 |
EP2551972A4 (en) | 2013-12-25 |
CN102823090A (zh) | 2012-12-12 |
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