WO2012057271A1 - イオン風発生体及びイオン風発生装置 - Google Patents
イオン風発生体及びイオン風発生装置 Download PDFInfo
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- WO2012057271A1 WO2012057271A1 PCT/JP2011/074831 JP2011074831W WO2012057271A1 WO 2012057271 A1 WO2012057271 A1 WO 2012057271A1 JP 2011074831 W JP2011074831 W JP 2011074831W WO 2012057271 A1 WO2012057271 A1 WO 2012057271A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J27/00—Ion beam tubes
- H01J27/02—Ion sources; Ion guns
- H01J27/022—Details
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/38—Particle charging or ionising stations, e.g. using electric discharge, radioactive radiation or flames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/60—Use of special materials other than liquids
- B03C3/62—Use of special materials other than liquids ceramics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/60—Use of special materials other than liquids
- B03C3/64—Use of special materials other than liquids synthetic resins
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- 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
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- 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
- H05H1/2418—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes the electrodes being embedded in the dielectric
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- 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
- H05H1/2437—Multilayer systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/14—Details of magnetic or electrostatic separation the gas being moved electro-kinetically
Definitions
- the present invention relates to an ion wind generator and an ion wind generator.
- Patent Document 1 An apparatus that induces ion wind by the movement of electrons or ions is known.
- an AC voltage is applied to two electrodes provided on a substrate-like dielectric material to generate a dielectric barrier discharge, and an ion wind is generated on one main surface of the dielectric material.
- Patent Document 1 the two electrodes are each formed in a rectangular shape having two sides parallel to the flow direction of the ion wind and two sides orthogonal to the flow direction.
- Patent Document 2 discloses a technique of forming one electrode of two electrodes in a shape having multi-terminal ends at the edge on the other electrode side.
- the wind direction of the ion wind is the opposite direction of the two electrodes, and the air volume distribution is uniform in the direction orthogonal to the opposite direction of the two electrodes. It is. In other words, the air volume and the wind direction are monotonous.
- the technique of Patent Document 2 forms a multipoint end for the purpose of making the wind direction constant, and the air volume and the wind direction are monotonous.
- An object of the present invention is to provide an ion wind generator and an ion wind generator capable of diversifying at least one of the air volume and the wind direction.
- An ion wind generator includes a first electrode, a second electrode having a downstream region disposed at a position shifted in the first direction from the first electrode in plan view, and the first electrode A first electrode and a dielectric provided between the second electrode and the first direction from the downstream edge of the first electrode to the downstream edge of the downstream region in plan view Is different in a second direction orthogonal to the first direction.
- An ion wind generator includes a first electrode, a second electrode having a downstream region disposed at a position shifted in the first direction from the first electrode in plan view, and the first electrode A voltage is applied between the dielectric provided between one electrode and the second electrode, and the first electrode and the second electrode to induce an ionic wind flowing in the first direction on these electrodes. And a distance in the first direction from the downstream edge of the first electrode to the downstream edge of the downstream area is orthogonal to the first direction in plan view. Different in the second direction.
- FIG. 1A is a perspective view schematically showing an ion wind generator according to the first embodiment of the present invention
- FIG. 1B is a cross-sectional view taken along line Ib-Ib in FIG. is there. It is a perspective view which shows typically the principal part of the ion wind generator which concerns on the 2nd Embodiment of this invention.
- FIG. 3 (a) is a perspective view schematically showing an ion wind generator according to a third embodiment of the present invention
- FIG. 3 (b) is a sectional view taken along line IIIb-IIIb in FIG. 3 (a). is there.
- FIG. 4A is a perspective view schematically showing an ion wind generator according to the fourth embodiment of the present invention
- FIG. 4B is a sectional view taken along line IVb-IVb of FIG. is there. It is sectional drawing which shows typically the principal part of the ion wind generator which concerns on the 5th Embodiment of this invention. It is a perspective view which shows typically the ion wind generator which concerns on the 6th Embodiment of this invention, FIG.6 (b) is sectional drawing in the VIb-VIb line
- FIGS. 9A to 9C are schematic plan views showing modifications of the electrodes. It is a perspective view which shows typically the ion wind generator which concerns on the 8th Embodiment of this invention. It is a disassembled perspective view which shows the principal part of the example of use of FIG. 8 typically.
- FIG. 1A is a perspective view schematically showing an ion wind generator 1 according to the first embodiment of the present invention
- FIG. 1B is a cross-sectional view taken along the line Ib-Ib in FIG. It is.
- the ion wind generator 1 is generally configured as a device that generates an ion wind that flows in the direction (x direction) indicated by arrows a1 and a2.
- the ion wind generator 1 includes an ion wind generator 3 that generates an ion wind, and a drive unit 5 (FIG. 1A) that drives and controls the ion wind generator 3.
- the ion wind generator 3 has a dielectric 7 and a first electrode 9 and a second electrode 11 separated by the dielectric 7. When the voltage is applied between the first electrode 9 and the second electrode 11, the ion wind generator 3 generates a dielectric barrier discharge and generates an ion wind.
- the dielectric 7 is formed in a flat plate shape (substrate shape) having a constant thickness, for example, and has a first main surface 7a and a second main surface 7b on the back surface thereof.
- the ion wind flows on the first main surface 7a along the first main surface 7a as indicated by arrows a1 and a2.
- the second main surface 7b an ion wind substantially opposite to the ion wind in the first main surface 7a is generated, but the description is omitted in this embodiment.
- 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.
- the ceramic include an aluminum oxide sintered body (alumina ceramic), a glass ceramic sintered body (glass ceramic), a mullite sintered body, an aluminum nitride sintered body, a cordierite sintered body, and a silicon carbide sintered body.
- Examples include ligation.
- the organic insulator include polyimide, epoxy, and rubber.
- the first electrode 9 and the second electrode 11 are formed in a layered shape (including a flat plate shape) having a constant thickness, for example.
- the first electrode 9 is stacked on the first main surface 7a, and the second electrode 11 is stacked on the second main surface 7b.
- the dielectric 7 is provided between the first electrode 9 and the second electrode 11 and separates these electrodes.
- the first electrode 9 and the second electrode 11 are arranged so as to be shifted from each other in the x direction (the flow direction of the ion wind).
- the second electrode 11 has a downstream region portion 11m located on one side (positive side) in the x direction with respect to the downstream side edge portion 9b of the first electrode 9.
- the first electrode 9 and the second electrode 11 may partially overlap in the x direction when the first main surface 7a or the second main surface 7b is viewed in plan, or are adjacent without a gap. Or may be separated by a predetermined gap.
- FIG. 1 illustrates the case where the first electrode 9 and the second electrode 11 are adjacent to each other without a gap. In this case, the downstream area 11m is the entire second electrode 11.
- the first electrode 9 extends in the y direction. More specifically, for example, the planar shape of the first electrode 9 is a rectangle having sides parallel to the x direction and the y direction. Therefore, the downstream edge 9b of the first electrode 9 has a linear shape extending in a direction orthogonal to the direction in which the ion wind is to be generated.
- the distance d is the shortest distance from each position of the downstream edge 11 b of the second electrode 11 to the downstream edge 9 b of the first electrode 9. That is, the distance on the perpendicular (shortest path) drawn from each position of the downstream edge 11b to the downstream edge 9b of the first electrode 9 (the distance in the direction (x direction) orthogonal to the downstream edge 9b). is there.
- the length e of the second electrode 11 (downstream region 11m) from the upstream edge 11a to the downstream edge 11b in the x direction changes. More specifically, the length e is larger on the center side in the y direction.
- the length e is a distance. equal to d.
- the first electrode 9 and the second electrode 11 are made of a conductive material such as metal.
- a conductive material such as metal.
- the metal include tungsten, molybdenum, manganese, copper, silver, gold, palladium, platinum, nickel, cobalt, and alloys containing these as a main component.
- the drive unit 5 (FIG. 1A) includes a power supply device 13 that applies an AC voltage between the first electrode 9 and the second electrode 11, and a control device 15 that controls the power supply device 13. .
- the AC voltage applied by the power supply device 13 may be a voltage whose potential is continuously changed, represented by a sine wave or the like, or a pulse-like voltage whose potential change is discontinuous.
- the alternating voltage may be one in which the potential varies with respect to the reference potential in both the first electrode 9 and the second electrode 11, or one of the first electrode 9 and the second electrode 11 becomes the reference potential. It may be connected, and the potential may be changed with respect to the reference potential only on the other side.
- the fluctuation of the potential may be positive and negative with respect to the reference potential, or may be only positive and negative with respect to the reference potential.
- the control device 15 controls on / off of voltage application by the power supply device 13 or the magnitude of the applied voltage, for example, according to a predetermined sequence or according to a user operation.
- the dimensions of the dielectric 7, the first electrode 9 and the second electrode 11, and the magnitude and frequency of the AC voltage are determined depending on the technology to which the ion wind generator 1 is applied or the nature of the required ion wind. It may be set appropriately according to various circumstances.
- the manufacturing method of the ion wind generator 3 is as follows, taking the case where the dielectric 7 is made of a ceramic sintered body as an example.
- a ceramic green sheet to be the dielectric 7 is prepared.
- the ceramic green sheet is formed by forming a slurry prepared by adding and mixing an appropriate organic solvent and solvent to the raw material powder into a sheet shape by a forming method such as a doctor blade method or a calender roll method.
- a forming method such as a doctor blade method or a calender roll method.
- the raw material powder is alumina (Al 2 O 3 ), silica (SiO 2 ), calcia (CaO), magnesia (MgO), or the like.
- the conductive paste that becomes the first electrode 9 is provided on the surface that becomes the first main surface 7a of the ceramic green sheet, and the conductive paste that becomes the second electrode 11 is provided on the surface that becomes the second main surface 7b of the ceramic green sheet.
- 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.
- a dispersant, a plasticizer, or the like may be added as necessary.
- Mixing is performed by kneading means such as a ball mill, a three-roll mill, or a planetary mixer.
- the conductive paste is printed and applied to the ceramic green sheet by using a printing means such as a screen printing method.
- the conductive paste and the ceramic green sheet are fired simultaneously. Thereby, the dielectric 7 in which the first electrode 9 and the second electrode 11 are arranged, that is, the ion wind generator 3 is formed.
- the conductive paste when 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 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 flowing on the first main surface 7a side overlaps with the second electrode 11 on the first main surface 7a by electrons or ions moving from the first electrode 9 side to the second electrode 11 side. It is induced around the region and flows in the direction indicated by arrows a1 and a2.
- the wind speed increases as the voltage applied to the first electrode 9 and the second electrode 11 increases and as the distance between the first electrode 9 and the second electrode 11 decreases. Further, the length of the first electrode 9 in the x direction (the shape of the upstream side edge portion 9a) hardly affects the wind speed and direction of the ion wind on the first main surface 7a.
- the ion wind generator 3 includes the first electrode 9 and the downstream region portion 11m disposed at a position shifted to the positive side in the x direction from the first electrode 9 in plan view. And a dielectric 7 provided between the first electrode 9 and the second electrode 11.
- the distance d in the x direction from the downstream edge 9b of the first electrode 9 to the downstream edge 11b of the downstream region 11m is different in the y direction orthogonal to the x direction. Therefore, by utilizing the difference in the distance d in the y direction, for example, the length e in the x direction can be varied with respect to the y direction, and the wind speed can be diversified.
- the downstream portion of the first electrode 9 and the upstream portion of the second electrode 11 are adjacent to each other in the x direction across the downstream edge portion 9b of the first electrode 9. Therefore, the dependency of the wind speed on the distance d is increased, and the wind speed and the like can be easily adjusted. That is, when the downstream portion of the first electrode 9 and the upstream portion of the second electrode 11 are separated in the x direction and the distance is changed, the presence or absence of occurrence of discharge varies, and the wind speed associated with the variation. However, such inconvenience does not occur.
- the downstream area 11m is formed such that the length e in the x direction is larger on the center side in the y direction. Therefore, as described above, it is possible to increase the wind speed toward the center in the y direction or to collect the ion wind at the center. Thus, for example, when the ion wind generator 1 is used for fluid reforming and delivery, it is possible to prevent the fluid that has not been sufficiently reformed from being diffused around the ion wind generator 1, etc. Various effective utilization of the ion wind generator 1 is attained.
- the direction toward the positive side in the x direction is an example of the first direction of the present invention
- the y direction is an example of the second direction of the present invention.
- FIG. 2 is a perspective view schematically showing a main part of the ion wind generator 101 according to the second embodiment of the present invention.
- the ion wind generator 101 is different from the ion wind generator 1 of the first embodiment only in the shape of the second electrode 111 (downstream region 111m) of the ion wind generator 103.
- the second electrode 111 has a shape in which two right triangles are arranged so that the center of the downstream edge 111b is recessed.
- the second electrode 111 is formed such that the length e in the x direction is large at both ends in the y direction. Note that, in plan view, the downstream edge 9b of the first electrode 9 and the upstream edge 111a of the second electrode 111 are adjacent to each other, as in the first embodiment.
- the wind speed increases toward the side as opposed to the first embodiment. Further, by increasing the side wind speed, it is possible to realize a wind direction that diverges the ion wind to the side as indicated by an arrow b101. Thereby, various effective utilization of the ion wind generator 101 is attained, for example, a fluid can be efficiently diffused around.
- FIG. 3A is a perspective view schematically showing an ion wind generator 201 according to the third embodiment of the present invention
- FIG. 3B is a cross-sectional view taken along the line IIIb-IIIb in FIG. It is.
- the ion wind generator 201 is different from the ion wind generator 1 of the first embodiment only in the shape of the first electrode 209 of the ion wind generator 203. Specifically, it is as follows.
- the first electrode 209 has an upstream area 209m located on the upstream side of the second electrode 11. As in the first embodiment, in plan view, the downstream edge 209b of the first electrode 209 and the upstream edge 11a of the second electrode 11 are adjacent to each other.
- the basin portion 209m is the entire first electrode 209.
- the first electrode 209 has a shape in which two right triangles are arranged so that the center of the upstream edge 209a is recessed.
- the 2nd electrode 11 becomes a triangle from which the center of the downstream edge part 11b protrudes. Therefore, the first electrode 209 has a shape in which a region equivalent to the second electrode 11 is excluded from a rectangle.
- the length f in the x direction of the first electrode 209 increases as the position e in which the length e in the x direction of the second electrode 11 (downstream region 11m) decreases in the y direction.
- the wind speed (air volume) is smaller toward both ends in the y direction, as in the first embodiment. Therefore, the ion wind on the second main surface 7b has a greater effect of reducing the wind speed at a position where the wind speed of the ion wind on the first main surface 7a is smaller in the y direction. As a result, it is possible to realize an ion wind having a large difference in wind speed.
- FIG. 4A is a perspective view schematically showing an ion wind generator 301 according to the fourth embodiment of the present invention
- FIG. 4B is a sectional view taken along line IVb-IVb in FIG. It is.
- the ion wind generator 303 of the ion wind generator 301 is simply described with reference to the reference numerals in FIG. 1.
- the dielectric 7 and The first electrode 9 is added. Specific description will be made with reference to the reference numerals in FIG. 4 as follows.
- the dielectric 307 has a first main surface 307a and a second main surface 307b on the back surface thereof.
- the first electrodes 9A and 9B are stacked on the first main surface 307a and the second main surface 307b, respectively, and the second electrode 11 is embedded in the dielectric 307.
- the configuration (shape and position of each member) of the ion wind generator 303 is plane-symmetric with respect to the second electrode 11.
- the dielectric 307 is configured, for example, by laminating a first insulating layer 308A and a second insulating layer 308B.
- a first insulating layer 308A and a second insulating layer 308B are clearly shown.
- the first insulating layer 308A and the second insulating layer 308B are It is integrated and the boundary line may not be observable. Note that the position of the boundary line can be specified from the position of the second electrode 11 even if observation is impossible.
- the first electrodes 9A and 9B are the same as the first electrode 9 of the first embodiment, and are connected in parallel to each other.
- the second electrode 11 is the same as the second electrode 11 of the first embodiment except that the second electrode 11 is embedded in the dielectric 307.
- the manufacturing method of the ion wind generator 303 may be a method of firing a ceramic green sheet provided with a conductive paste to be each electrode, for example, as in the first embodiment. That is, the conductive paste to be the first electrode 9A is arranged on the ceramic green sheet to be the first insulating layer 308A, and the conductive paste to be the first electrode 9B is arranged on the ceramic green sheet to be the second insulating layer 308B.
- the ion wind generator 303 may be formed by disposing a conductive paste to be the second electrode 11 on one of the two ceramic green sheets and laminating and firing the two ceramic green sheets.
- the first main surface 307a has the first voltage as shown by arrows a1 and a2. Similar to the embodiment, an ion wind is generated from the first electrode 9A side to the second electrode 11 side. Further, as indicated by arrows a301 and a302, ion wind from the first electrode 9B side to the second electrode 11 side is also generated on the second main surface 307b. That is, ion winds in the same direction are generated on the first main surface 307a and the second main surface 307b. Therefore, it is possible to efficiently generate an ion wind having a high wind speed.
- FIG. 5 is a cross-sectional view schematically showing a main part of an ion wind generating device 401 according to the fifth embodiment of the present invention.
- the ion wind generator 403 of the ion wind generator 401 has the first electrodes 9A and 9B arranged on both main surfaces of the dielectric 407.
- the configurations of the dielectric and the second electrode are different from those of the fourth embodiment.
- the ion wind generator 403 has a configuration in which the ion wind generator 3 of the first embodiment is overlapped with the third insulating layer 408C interposed therebetween. ing. Specific description will be made with reference to the reference numerals in FIG. 4 as follows.
- the dielectric 407 is configured by laminating a first insulating layer 408A, a second insulating layer 408B, and a third insulating layer 408C interposed therebetween.
- first insulating layer 408A and the second insulating layer 408B have the same thickness.
- the thickness of the third insulating layer 408C may be set as appropriate, and FIG. 3 illustrates the case where the third insulating layer 408C is formed thinner than the first insulating layer 408A and the second insulating layer 408B.
- the dielectric 407 has a first main surface 407a and a second main surface 407b on the back surface thereof.
- the first electrodes 9A and 9B are stacked on the first main surface 407a and the second main surface 407b, respectively.
- the second electrodes 11A and 11B are embedded between the first insulating layer 408A and the third insulating layer 408C and between the second insulating layer 408B and the third insulating layer 408C, respectively.
- the third insulating layer 408C is provided with a via conductor 412 that penetrates the third insulating layer 408C, and the via conductor 412 connects the second electrodes 11A and 11B.
- the number, arrangement position, planar shape, cross-sectional shape, and dimensions of the via conductors 412 may be set as appropriate.
- the material of the via conductor 412 is the same as the material of the first and second electrodes, for example.
- the second electrodes 11A and 11B and the via conductors 412 as a whole can be regarded as the second electrode 411 in the fifth embodiment.
- the first electrodes 9A and 9B are the same as the first electrode 9 of the first embodiment, and are connected to each other.
- the second electrodes 11A and 11B are the same as the second electrode 11 of the first embodiment except that the second electrodes 11A and 11B are embedded in the dielectric 407.
- the method for producing the ion wind generator 303 may be, for example, a method of firing a ceramic green sheet provided with a conductive paste serving as each electrode, as in the first embodiment. Specifically, it is as follows.
- a conductive paste to be the first electrode 9A and the second electrode 11A is disposed on the ceramic green sheet to be the first insulating layer 408A.
- a conductive paste to be the first electrode 9B and the second electrode 11B is disposed on the ceramic green sheet to be the second insulating layer 408B.
- a via is formed in the ceramic green sheet that becomes the third insulating layer 408C, and a conductive paste that becomes the via conductor 412 is filled in the via. Then, the above three ceramic green sheets are laminated and fired to form the ion wind generator 403.
- the ion wind generator 403 can generate ion winds in the same direction on both the first main surface 407a and the second main surface 407b, and ions with high wind speed can be efficiently produced. Wind can be generated.
- the first insulating layer 308A and the second insulating layer are used to increase the wind speed of the ion wind by decreasing the distance between the first electrodes 9A and 9B and the second electrode 11.
- the thickness of the dielectric 307 as a whole decreases, and the mechanical strength of the ion wind generator 303 decreases.
- the thickness of the entire dielectric 407 can be ensured by the third insulating layer 408C.
- one of the second electrode 11 and the first electrodes 9A and 9B is caused by a positional shift when the first insulating layer 308A and the second insulating layer 308B are stacked. There is a risk of misalignment. However, such a problem does not occur in the fifth embodiment.
- FIG. 6A is a perspective view schematically showing an ion wind generator 501 according to the sixth embodiment of the present invention
- FIG. 6B is a cross-sectional view taken along the line VIb-VIb in FIG. It is.
- the ion wind generator 503 of the ion wind generator 501 has the first electrodes 9A and 9B disposed on both main surfaces of the dielectric 407, and the two second electrodes are dielectrics. It is embedded in 407.
- the arrangement and configuration of the electrodes are different from those of the fifth embodiment.
- the ion wind generator 503 refers to the ion wind generator 3 of the first embodiment and the ion wind generator 103 of the second embodiment.
- the third insulating layer 408 ⁇ / b> C is stacked with the third insulating layer 408 ⁇ / b> C interposed therebetween.
- the first electrodes 9A and 9B are connected in parallel to each other, and the second electrodes 11 and 111 are connected in parallel to each other.
- the direction from the first electrode 9A to the second electrode 11 and the direction from the first electrode 9B to the second electrode 111 are opposite to each other.
- the second electrode 11 has a downstream region portion 11m located on one side in the x direction with respect to the first electrode 9A, whereas the second electrode 111 is on the other side in the x direction with respect to the first electrode 9B. It has a downstream area portion 111m located in the area. Accordingly, the ion wind along the first main surface 407a is opposite to the ion wind along the second main surface 407b.
- the shape of one of the second electrode 11 and the second electrode 111 is generally a shape obtained by excluding the shape of the other electrode from a rectangle.
- the length e in the x direction of the downstream area 111m of the second electrode 111 increases as the position e in the x direction of the downstream area 11m of the second electrode 11 decreases in the y direction.
- the ion wind on the first main surface 407a and the ion wind on the second main surface 407b are opposite to each other, and in the y direction, the ion wind speed on the first main surface 407a is smaller at the second position.
- the wind speed of the ion wind in the main surface 407b is large. Therefore, as in the third embodiment, the effect of relatively increasing the wind speed on the central side in the y direction in the ion wind on the first main surface 407a is increased.
- the first electrodes 9A and 9B are examples of the first electrode and the third electrode of the present invention
- the second electrodes 11 and 111 are examples of the second electrode and the fourth electrode of the present invention. It is.
- FIG. 7 is a perspective view schematically showing an ion wind generator 601 according to the seventh embodiment of the present invention.
- the ion wind generator 601 differs from the first embodiment in the electrode shape of the second electrode and the voltage control of the second electrode. Specifically, it is as follows.
- the second electrode 611 of the ion wind generator 603 is divided into a plurality (two in this embodiment) in the y direction, and the first divided electrode 612A and the second divided electrode 612B (hereinafter simply referred to as “divided electrode 612”).
- the shape of the second electrode 611 as a whole may be an appropriate shape, in FIG. 7, as in the second embodiment, two right triangles are arranged so that the center side of the downstream edge 611b is recessed. The case where it was made into the shape which was made is illustrated.
- the drive unit 605 has a switch unit 617 that can switch the connection state between the power supply device 13 and the two divided electrodes 612.
- the switch unit 617 includes, for example, switches 618 (618A and 618B) provided for each arbitrary divided electrode 612 (each divided electrode 612 in the present embodiment).
- the switch unit 617 includes a connection state between the power supply device 13 and the two divided electrodes 612, a state in which the two divided electrodes 612 are connected, a state in which only the first divided electrode 612A is connected, and a second divided state. It is possible to switch between four states in which only the electrode 612B is connected and in which the two divided electrodes 612 are disconnected.
- the switch 618 is configured by, for example, an FET (Field Effect Transistor).
- the wind speed and / or the wind direction can be made variable by switching the connection state between the power supply device 13 and the divided electrode 612, and the wind speed and / or the wind speed due to the change in the shape of the second electrode 611. Or the effect of diversification of the wind direction can be increased. As a result, for example, it is possible to cause various movements to be performed on a minute electronic device that uses ion wind as a driving force.
- an electrode to which a voltage is applied is selected by the switch unit 617, compared to a case where a plurality of power supply devices 13 are arranged corresponding to a plurality of divided electrodes 612 (this case is also included in the present invention). And cheap.
- FIG. 10 is a perspective view schematically showing an ion wind generator 901 according to the eighth embodiment of the present invention.
- the ion wind generator 901 has a configuration in which, in the ion wind generator 101 of the second embodiment, a DC electrode 912 and a DC power supply device 914 that applies a DC voltage to the DC electrode 912 are provided. Specifically, it is as follows.
- the DC electrode 912 is formed, for example, in a flat plate shape like the first electrode 9 and the like, and is provided downstream of the second electrode 111 on the first main surface 7a.
- two DC electrodes 912 are provided on both sides in the y direction, for example.
- the DC electrode 912 is provided at a position where the length e in the x direction of the second electrode 111 is large in the y direction. Note that the shape of the DC electrode 912 may be appropriate.
- the DC power supply device 914 applies a DC voltage to the DC electrode 912 without forming a closed loop. That is, only the positive terminal or the negative terminal of the DC power supply device 914 is connected to the DC electrode 912, and a closed loop through which a current from the DC power supply device 914 flows is not configured.
- the two DC electrodes 912 are connected in parallel to the DC power supply device 914, but they may be connected in series.
- the DC electrode 912 is arranged at a position where the wind speed is increased by the shape of the second electrode 111 in the y direction, the wind speed distribution by the second electrode 111 can be made more remarkable.
- the control device 15 performs control so that the DC power supply device 914 always applies a DC voltage to the DC electrode 912 while the power supply device 13 applies the AC voltage to the first electrode 9 and the second electrode 111.
- the DC power supply device 914 applies a direct current to the DC electrode 912 only when a predetermined condition is satisfied. Control may be performed so as to apply a voltage. Further, the control device 15 may control the magnitude of the DC voltage. In this case, the magnitude of the DC voltage may be controlled to be proportional to the magnitude of the AC voltage, It may be controlled independently of the size.
- FIG. 11 is an exploded perspective view schematically showing a main part of an application example of the ion wind generator of the present invention
- FIG. 8 is a sectional view taken along line VIII-VIII in FIG.
- the ion wind generator 701 of the application example is disposed in a recess 821r formed on the upper surface and the lower surface of the flow channel 821, and is used to generate a flow in the x direction in the flow channel 821.
- the flow velocity becomes slow due to the frictional resistance from the wall surface 821w, and the flow velocity distribution in the flow channel 821 becomes non-uniform.
- the second electrode 711 (downstream region portion 711m) of the ion wind generator 703 has a length e (FIG. 8) in the x direction on the end side in the y direction, as in the second embodiment. It is formed as follows.
- the shape of the cross section orthogonal to the flow direction of the flow path is not limited to a rectangle, and may be a circle or the like.
- the entire lower surface and upper surface of the flow channel 821 or the entire member constituting the flow channel 821 may be formed of a dielectric.
- the second electrode 711 may be provided on the outer peripheral surface of the member.
- the ion wind generators are such that ion winds flow in the same direction on both main surfaces of the dielectric, and a plurality of ion wind generators are arranged at predetermined intervals in the z direction in the flow path.
- the direction around the x axis may be changed by 90 degrees, and a plurality of them may be arranged at predetermined intervals in the y direction.
- the present invention is not limited to the above embodiment, and may be implemented in various modes.
- the ion wind generator and ion wind generator of the present invention can be used in various fields.
- the present invention may be used for suppressing separation of a boundary layer in a blade, or may be used for forming a flow in a minute space (for example, forming cooling air for a small electronic device).
- positions a 1st electrode on both surfaces of the dielectric material in 4th and 5th embodiment may be applied with respect to the shape of the 2nd electrode of 2nd Embodiment.
- segments the 2nd electrode of 7th Embodiment may be applied with respect to the shape of the 2nd electrode of 1st Embodiment.
- the DC electrode of the eighth embodiment may be added to any embodiment other than the second embodiment.
- the dielectric is not limited to a flat plate, and may be, for example, a wing having a variable thickness or a curved plate.
- the dielectric in which the second electrode and the like are embedded is not limited to that formed by stacking insulating layers.
- the dielectric material may be formed by filling a metal material serving as an electrode with a material material serving as a dielectric material.
- the dielectric is not limited to one obtained by stacking and firing ceramic green sheets.
- the dielectric may be one in which an insulating layer is laminated by ceramic spraying, or may be one in which an uncured thermosetting resin is laminated and heated and pressurized.
- one insulating layer may be composed of a plurality of ceramic green sheets.
- the dielectric material only needs to separate the first electrode and the second electrode, and does not have to function as a base for fixing these electrodes.
- the first electrode only needs to have a certain width in a direction (second direction) intersecting the direction (second direction of ion wind, the first direction) with the downstream region of the second electrode. It may be a shape.
- the first electrode may have an axial shape extending in the second direction.
- the planar shape is not limited to that of the embodiment.
- the planar shape may be a circle, a square, or a trapezoid.
- the first electrode may have a length in the first direction larger than a length in the second direction.
- the two first electrodes may have different shapes. Further, when the first electrodes are provided on both main surfaces of the dielectric, they are not limited to those connected in parallel. For example, the first electrodes provided on both main surfaces may be connected in series, or voltages having different frequencies and / or amplitudes may be applied between the second electrodes. The same applies to the case where two second electrodes are provided inside the dielectric.
- the second electrode is not limited to one in which the position of the upstream edge of the second electrode matches the position of the upstream edge of the first electrode in plan view.
- the second electrode extends across the downstream edge of the first electrode or the upstream edge of the second electrode, as illustrated in the plan views of FIGS. 9 (a) to 9 (c). , In the x direction, a part thereof may be overlapped or may be formed apart from the first electrode.
- a part of the upstream side of the second electrode 31 overlaps the first electrode 9.
- the downstream area 31m of the second electrode 31 is a part of the downstream side of the second electrode 31, unlike the embodiment.
- the distance d and the length e are the same as each other. However, the distance d and the length e are different from the length in the x direction of the entire second electrode 31 unlike the embodiment.
- a part of the upstream side of the second electrode 31 may overlap the entire first electrode 9.
- the second electrode 33 is separated from the first electrode 9.
- the separated distance distance in the x direction
- the downstream area 33m of the second electrode 33 is the entire second electrode 33 as in the embodiment.
- the second electrode 35 overlaps the first electrode 9 only in a part in the y direction. Further, with respect to the separated portions, the separated distance (distance in the x direction) is not constant in the y direction. In this case, the downstream area 35m of the second electrode 35 is a part of the downstream side of the second electrode 35 unlike the embodiment. In the separated portion, the distance d and the length e at the same position in the y direction are different from each other, and the changes of the distance d and the length e with respect to the position in the y direction are also different from each other.
- the distance (d) from the downstream edge of the first electrode varies with respect to the position in the second direction, while the downstream region has a length in the first direction.
- the length (e) may be constant with respect to the position in the second direction.
- the wind speed and / or the air volume can be diversified by changing the distance in the first direction between the downstream edge of the first electrode and the upstream edge of the second electrode with respect to the position in the second direction. Is possible. However, it is considered that the direction in which the length (e) of the downstream region changes can change the wind speed and / or the air volume efficiently.
- the change of the length (e) of the downstream region of the second electrode with respect to the position in the second direction (y direction) is not limited to that exemplified in the embodiment.
- it may change in a curved line or may change in a staircase pattern.
- the length (e) increases or decreases at an appropriate number of appropriate positions, or the length (e) is asymmetric with respect to the center of the downstream edge of the first electrode (the center in the y direction).
- the length (e) may be complicated.
- the shape of the first electrode changes from a rectangular shape to a first shape. It is not limited to the shape excluding the shape of the two electrodes.
- the shape of the first electrode may be appropriately set so that an appropriate ion wind is synthesized by the ion wind on both main surfaces. The same applies to the shape of the fourth electrode when the length (e) of the downstream region of the fourth electrode (111) changes with respect to the position in the second direction as in the sixth embodiment.
- the first electrode (or the third electrode) is not limited to the one exposed on the surface of the dielectric.
- the first electrode may be embedded in a dielectric, or may be coated with a dielectric material.
- the first electrode when the first electrode is exposed on the surface of the dielectric, the first electrode may be fitted into a recess formed in the dielectric, and only a part of the first electrode may be exposed from the dielectric.
- the second electrode (or the fourth electrode) may be appropriately disposed on the surface of the dielectric, inside, or in the recess.
- the second electrode is embedded and the thickness of the dielectric between the second electrode and the second main surface is increased. By increasing, generation of ion wind on the second main surface can be suppressed.
- the switches constituting the switch unit may be appropriately provided for the plurality of second electrodes, and need not be provided individually for all the second electrodes.
- the switch may be individually provided for a part of the plurality of second electrodes, or may be provided in common for a part of the plurality of second electrodes.
- a plurality of direct current electrodes may not be disposed, and only one direct current electrode may be disposed.
- voltage application may be individually controlled for the plurality of DC electrodes.
- the DC electrode need not be provided at a position where the wind speed of the ion wind by the first electrode and the second electrode is strong in the second direction (y direction).
- it is provided at a position where the wind speed of the ion wind by the first electrode and the second electrode is weak, and a direct current voltage is applied as necessary to contribute to temporarily uniforming the ion wind distribution.
- it may be provided with a width equivalent to that of the first electrode and the second electrode, and may simply contribute to increasing the overall wind speed of the ion wind.
- the direction in plan view, the first direction, and the second direction when grasping the positional relationship between the first electrode and the second electrode, etc. may be appropriately extracted.
- the positional relationship between the first electrode and the second electrode may be grasped in a plan view of the surface.
- the first direction and the second direction may be appropriately extracted from the positional relationship between the first electrode and the second electrode and the overall shape of the first electrode.
- the dominant part of the first electrode with respect to the ion wind flowing from the first electrode side to the second electrode side is the downstream edge.
- the direction in which the downstream edge extends may be extracted as the second direction.
- the downstream edge when the downstream edge is an arc, the direction along the arc may be extracted as the second direction, and the radial direction may be extracted as the first direction.
- the first direction and the second direction may be extracted for each part of the downstream edge of the first electrode.
- a first electrode, a plurality of divided electrodes, a power source capable of inducing an ion wind by applying a voltage between the first electrode and the plurality of divided electrodes, and the power source It is possible to extract an invention of an ion wind generator having a switch unit capable of switching a connection state between the electrode and the plurality of divided electrodes. In the ion wind generator, the distance between the downstream edge of the divided electrode and the downstream edge of the first electrode need not change.
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Abstract
Description
図1(a)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り、図1(b)は図1(a)のIb-Ib線における断面図である。
図2は、本発明の第2の実施形態に係るイオン風発生装置101の要部を模式的に示す斜視図である。
図3(a)は本発明の第3の実施形態に係るイオン風発生装置201を模式的に示す斜視図であり、図3(b)は図3(a)のIIIb-IIIb線における断面図である。
図4(a)は本発明の第4の実施形態に係るイオン風発生装置301を模式的に示す斜視図であり、図4(b)は図4(a)のIVb-IVb線における断面図である。
図5は、本発明の第5の実施形態に係るイオン風発生装置401の要部を模式的に示す断面図である。
図6(a)は本発明の第6の実施形態に係るイオン風発生装置501を模式的に示す斜視図であり、図6(b)は図6(a)のVIb-VIb線における断面図である。
図7は本発明の第7の実施形態に係るイオン風発生装置601を模式的に示す斜視図である。
図10は本発明の第8の実施形態に係るイオン風発生装置901を模式的に示す斜視図である。
図11は、本発明のイオン風発生装置の利用例の要部を模式的に示す分解斜視図であり、図8は、図11のVIII-VIII線における断面図である。
Claims (9)
- 第1電極と、
平面視において該第1電極から第1方向にずれた位置に配置された下流域部を有する第2電極と、
前記第1電極および前記第2電極の間に設けられた誘電体とを備えており、
平面視において、前記第1電極の下流側縁部から前記下流域部の下流側縁部までの前記第1方向における距離が、前記第1方向に直交する第2方向において異なっている
イオン風発生体。 - 前記下流域部は、前記第1方向における長さが前記第2方向において異なっている
請求項1に記載のイオン風発生体。 - 前記第1電極の下流側部分と前記第2電極の上流側部分とは、前記第1電極の下流側縁部に亘って又は前記第2電極の上流側縁部に亘って、前記第1方向において重複し若しくは隣接し、又は、両者の前記第1方向における距離が一定である
請求項2に記載のイオン風発生体。 - 前記下流域部は、前記第1方向の長さが前記第2方向の中央側において大きくなるように形成されている
請求項2又は3に記載のイオン風発生体。 - 前記下流域部は、前記第1方向の長さが前記第2方向の両端側において大きくなるように形成されている
請求項2又は3に記載のイオン風発生体。 - 前記第1電極は、前記第2電極よりも前記第1方向とは反対側に位置する上流域部を含み、
前記上流域部は、前記第1方向の長さが、前記第2方向に関して前記下流域部の前記第1方向の長さが小さくなる位置ほど大きくなっている
請求項2~5のいずれか1項に記載のイオン風発生体。 - 前記誘電体は、第1主面とその背面の第2主面とを有し、
前記第2電極は、前記誘電体に埋設され、
前記第1電極は、前記第2電極よりも前記第1主面側に設けられ、
前記第1電極及び前記第2電極は、前記第1主面に沿うイオン風を誘起可能であり、
前記誘電体の前記第2電極よりも前記第2主面側には第4電極が埋設されており、
前記第4電極よりも前記第2主面側には第3電極が設けられており、
前記第4電極は、前記第3電極から前記第1方向の反対側に位置する下流域部を有し、
前記第4電極の前記下流域部は、前記第1方向の長さが、前記第2方向に関して前記第2電極の前記第1方向の長さが小さくなる位置ほど大きくなっている
請求項2~5のいずれか1項に記載のイオン風発生体。 - 第1電極と、
平面視において該第1電極から第1方向にずれた位置に配置された下流域部を有する第2電極と、
前記第1電極および前記第2電極の間に設けられた誘電体と、
前記第1電極と前記第2電極との間に電圧を印加してこれらの電極に前記第1方向に流れるイオン風を誘起させることが可能な電源と、
を有し、
平面視において、前記第1電極の下流側縁部から前記下流域部の下流側縁部までの前記第1方向における距離が、前記第1方向に直交する第2方向において異なっている
イオン風発生装置。 - 前記第2電極は、前記第2方向において複数の分割電極に分割されており、
前記電源と前記複数の分割電極との接続状態を切り換えるスイッチ部が設けられている
請求項8に記載のイオン風発生装置。
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US13/811,644 US8929049B2 (en) | 2010-10-27 | 2011-10-27 | Ion wind generator and ion wind generating device |
EP11836404.1A EP2635095B1 (en) | 2010-10-27 | 2011-10-27 | Ion wind generator and ion wind generating device |
JP2012540935A JP5584776B2 (ja) | 2010-10-27 | 2011-10-27 | イオン風発生体及びイオン風発生装置 |
CN2011800352217A CN103109584A (zh) | 2010-10-27 | 2011-10-27 | 离子风发生体及离子风发生装置 |
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- 2011-10-27 CN CN2011800352217A patent/CN103109584A/zh active Pending
- 2011-10-27 EP EP11836404.1A patent/EP2635095B1/en not_active Not-in-force
- 2011-10-27 WO PCT/JP2011/074831 patent/WO2012057271A1/ja active Application Filing
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Cited By (10)
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JP2014007007A (ja) * | 2012-06-22 | 2014-01-16 | Sharp Corp | イオン発生装置およびイオン発生装置を備えた電気機器 |
JP2014049428A (ja) * | 2012-09-04 | 2014-03-17 | Tokyo Metropolitan Univ | プラズマアクチュエータ |
JP2014103037A (ja) * | 2012-11-21 | 2014-06-05 | Kyocera Corp | プラズマ発生体及びプラズマ発生装置 |
EP3036967A4 (en) * | 2012-12-13 | 2018-03-14 | Krupakar Murali Subramanian | Systems and methods for high pressure plasma discharge |
JP2014179599A (ja) * | 2013-03-13 | 2014-09-25 | Palo Alto Research Center Inc | 微細バネを使用するマイクロプラズマ生成 |
JP2016066463A (ja) * | 2014-09-24 | 2016-04-28 | シャープ株式会社 | イオン発生装置及びそれを備えた装置 |
JP2017045565A (ja) * | 2015-08-25 | 2017-03-02 | 株式会社東芝 | 気流発生装置および風力発電システム |
JP2020506504A (ja) * | 2017-07-11 | 2020-02-27 | 深セン元啓環境能源技術有限公司 | 空気清浄に用いられる双極イオン発生器及び該双極イオン発生器を使用したサーキュラーディフューザー |
WO2020021831A1 (ja) * | 2018-07-26 | 2020-01-30 | 株式会社Screenホールディングス | プラズマ発生装置 |
JP2022049503A (ja) * | 2020-09-16 | 2022-03-29 | 株式会社東芝 | 誘電体バリア放電電極及び誘電体バリア放電装置 |
Also Published As
Publication number | Publication date |
---|---|
US8929049B2 (en) | 2015-01-06 |
EP2635095A1 (en) | 2013-09-04 |
CN103109584A (zh) | 2013-05-15 |
EP2635095A4 (en) | 2014-11-05 |
EP2635095B1 (en) | 2020-11-25 |
JP5584776B2 (ja) | 2014-09-03 |
JPWO2012057271A1 (ja) | 2014-05-12 |
US20130119264A1 (en) | 2013-05-16 |
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