EP0029421A1 - Device for generating a directed current of a gaeous medium - Google Patents

Device for generating a directed current of a gaeous medium Download PDF

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Publication number
EP0029421A1
EP0029421A1 EP80890014A EP80890014A EP0029421A1 EP 0029421 A1 EP0029421 A1 EP 0029421A1 EP 80890014 A EP80890014 A EP 80890014A EP 80890014 A EP80890014 A EP 80890014A EP 0029421 A1 EP0029421 A1 EP 0029421A1
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Prior art keywords
discharge
electrode
wire
discharge electrode
ions
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EP80890014A
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German (de)
French (fr)
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EP0029421B1 (en
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Carl Maria Dr. Fleck
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Fleck Carl Maria Dr
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Fleck Carl Maria Dr
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/12—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps
    • 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

Definitions

  • the invention relates to a device for generating a directed flow of a gaseous medium, e.g. of an air stream using the electric wind.
  • the object of the invention is to design the device mentioned at the outset so that it can be used at atmospheric pressures.
  • the invention is characterized in that an electrode under high electric field, for example a wire, is provided for forming the ions, on which a discharge current in the region of the town end discharge or the glow discharge is preferably between 1 0 5 A / cm 2 and 10 3 A / cm 2 flows, that a counterelectrode, which is preferably formed from the guiding surfaces of a flow channel, is arranged, that the edges of the guiding surfaces run parallel to the discharge wires, so that the ions move in one direction or at least in one sector of the spheres around the emission points of the discharge electrode with an opening angle that is less than 180 °.
  • an electrode under high electric field for example a wire
  • a counterelectrode which is preferably formed from the guiding surfaces of a flow channel
  • the discharge current will preferably be in the range between 10 -5 A / cm 2 and 10 3 A / cm 2 .
  • a preferred embodiment of the invention consists in that an auxiliary electrode is arranged on the side of the discharge electrode facing away from the counterelectrode, which is located at or near the potential of the discharge electrode and that the ions are generated on a wire under high voltage and from this discharge wire drift a grounded counter electrode, which preferably consists of one or more baffles, the edges of which run parallel to the discharge wire, and that the auxiliary electrode also consists of a baffle with edges parallel to the discharge wire.
  • FIG. 1 shows the device according to the invention with electrode and counterelectrode
  • FIG. 2 shows a series connection of electrode and counterelectrode
  • FIG. 3 shows another embodiment of the device according to the invention with a series connection of electrode and counterelectrode
  • FIG. 4 show a special embodiment of the device according to the invention with discharge paths arranged one behind the other and next to one another.
  • the ions are generated within a guide tube 3 for the gas or air flow to be generated by a radioactive CC preparation 1, the unipolarity being achieved by charging a tube or a pair of plates 2 in which ions of the same polarity are not unload.
  • this pair of plates 2 there is a preferably grounded ring-shaped or plate-shaped counterelectrode 4 in the guide tube 3, so that a directed field is formed, along the field lines 5 of which the unipolar gas ions in the direction of the counterelectrode 4 and initiate a macroscopic movement of the gas in the field direction by means of collision processes with neutral gas molecules, preferably with a pulse transmission in the direction of movement of the ions.
  • the ions are generated via a peak discharge, only ions of the same polarity emerging from the plasma region around the highly charged tip 1 ′.
  • the tip 1 ' is shaped in such a way that the field lines from the plasma area of the tip only run in the direction of the ring-shaped counterelectrode 2' to the right of the tip_1 ', so that a directed gas or air flow 4 can form through an insulating guide tube 3.
  • FIG. 3 shows a similar arrangement with discharge wires 1 ".
  • the one-sided ion movement when several ion paths are connected in series is achieved by an auxiliary electrode 2" of the same polarity and voltage, while the field is built up by two grounded counter electrodes 3 " again form an air flow 5 'by insulating guide plates 4 ", which is quite comparable to the blower output of small room fans.
  • FIG. 4 describes a technical embodiment of the principle set out in FIG. 3.
  • Several levels of ion paths are arranged one above the other.
  • the grounded counter electrodes 1 "'and the auxiliary electrodes 2"' on wire tension can be punched out of sheet metal, the discharge wires also being attached to the auxiliary electrode 2 "'with spot welding 7.
  • This arrangement is continued in layers one above the other: 3"', 4 "', 5"', 8.
  • An Ab closing electrode 6 regulates the amount of resections emerging from the blower (arrow).
  • An insulating intermediate plate 9 enables the construction of a second fan, which is operated with ions of the second polarity, in order to avoid static charging of the pumped gas and to prevent faulty current in the supply network.

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Abstract

1. Device for generating a directed current of a gaseous medium, utilizing the electric wind, a discharge electrode 1 being provided for the purpose of forming gas ions and having a high electrical voltage compared with a counter-electrode 3, in order to ensure a discharge current at atmospheric pressures in the range of the Townsend discharge or glow discharge, so that the ions move in a preselected direction 5 or in a preselected sector, with an aperture angle of less than 180 degrees of the imaginary spherical sectors around the emission points of the discharge electrode 1, characterised by the fact that the discharge electrode 1 takes the form of a wire, that corresponding to each discharge electrode there are at least two mutually parallel counter-electrodes 3 present to one side of the discharge electrode and at an equal distance from the latter, the nearest edge of each one extending parallel to the wire-shaped discharge electrode 1, and that the discharge current is between 10**-6 A/cm**2 and 10**-1 A/cm**2 .

Description

Die Erfindung betrifft eine Vorrichtung zur Erzeugung einer gerichteten Strömung eines gasförmigen Mediums, z.B. eines Luftstromes unter Ausnützung des elektrischen Windes.The invention relates to a device for generating a directed flow of a gaseous medium, e.g. of an air stream using the electric wind.

Im Bereich des normalen atmosphärischen Druckes werden Luftströmungen heute ausnahmslos mechanisch erzeugt, obwohl eine Reihe physikalischer Effekte bekannt sind, die zu einer Bewegung von Luft führen. So ist das Pumpen von Gasen durch Adsorption, durch Abkühlung und Erwärmung, durch Diffusion und durch elektrische Ladungen (elektrischer Wind, vergl. etwa Bergmann Schaefer Bd.II, Seiten 10 und 474) bekannt und wird zu Sonderzwecken auch durchgeführt, hat aber technisch keine Bedeutung erlangt. Man verläßt sich bei atmosphärischen Drücken nach wie vor auf mechanische Gebläse der verschiedensten Bauart, zu denen auch Flüssigkeitspumpen wie Wasserstrahlpumpen u.dgl. zählen. Anders sieht dies in Bereichen verminderten Druckes aus. Hier werden eine Reihe verschiedener physikalischer Effekte ausgenützt, wie etwa bei den Adsorptionspumpen verschiedenster Konstruktion, Ionengitterpumpen, Diffusionspumpen, Kryopumpen etc. Auch der elektrische Wind wurde bei geringen Drucken, etwa im Bereich zwischen Vorvakuum und Hochvakuum zum Gastransport vorgeschlagen (vgl. z.B. Deutsche Patentschrift 265 534).In the normal atmospheric pressure range, air currents are all generated mechanically today, although a number of physical effects are known that cause air to move. The pumping of gases by adsorption, by cooling and heating, by diffusion and by electrical charges (electric wind, see e.g. Bergmann Schaefer Vol. II, pages 10 and 474) is known and is also carried out for special purposes, but has no technical features Gained meaning. At atmospheric pressures, mechanical blowers of various types are still relied on, including liquid pumps such as water jet pumps and the like. counting. The situation is different in areas of reduced pressure. A number of different physical effects are exploited here, such as adsorption pumps of various designs, ion lattice pumps, diffusion pumps, cryopumps etc. The electric wind was also used at low pressures, for example in the Forevacuum and high vacuum for gas transport proposed (see, for example, German Patent 265 534).

Aufgabe der Erfindung ist es, die eingangs erwähnte Vorrichtung so auszubilden, daß sie bei atmosphärischen Drücken anwendbar ist.The object of the invention is to design the device mentioned at the outset so that it can be used at atmospheric pressures.

Die Erfindung ist dadurch gekennzeichnet, daß zur Bildung der Ionen eine unter hohem elektrischen Feld stehende Elektrode, etwa ein Draht vorgesehen ist, an welchem im Bereich der Townsendentladung oder der Glimmentladung ein Entladungsstrom vorzugsweise zwischen 10 5A/cm2 und 10 3A/cm2 fließt, daß eine vorzugsweise aus Leitflächen eines Ströungskanals gebildete Gegenelektrode angeordnet ist, daß die Kanten der Leitflächen parallel zu den Entladungsdrähten verlaufen, sodaß sich die Ionen in eine Richtung oder zumindest in einem Sektor der um die Emissionspunkte der Entladungselektrode gedachten Kugeln mit einem öffnungswinkel, der weniger als 180° beträgt, bewegen. Wenn die Feldstärke am Draht so bemessen ist, daß sich eine Townsendentladung oder eine Glimmentladung ausbildet, so fließen Anodenströme zwischen 10 6A/cm2 und 10-1A/cm2. .Soll.der Pumpvorgang in Luft ohne zu große Geräuschentwicklung und Ozonbildung ablaufen, so wird der Entladungsstrom vorzugsweise im Bereich zwischen 10-5A/cm2 und 103A/cm2 liegen.The invention is characterized in that an electrode under high electric field, for example a wire, is provided for forming the ions, on which a discharge current in the region of the town end discharge or the glow discharge is preferably between 1 0 5 A / cm 2 and 10 3 A / cm 2 flows, that a counterelectrode, which is preferably formed from the guiding surfaces of a flow channel, is arranged, that the edges of the guiding surfaces run parallel to the discharge wires, so that the ions move in one direction or at least in one sector of the spheres around the emission points of the discharge electrode with an opening angle that is less than 180 °. If the field strength on the wire is dimensioned such that a Townsend discharge or a glow discharge is formed, then anode currents flow between 1 0 6 A / cm 2 and 10 -1 A / cm 2 . If the pumping process is to take place in air without excessive noise and ozone formation, the discharge current will preferably be in the range between 10 -5 A / cm 2 and 10 3 A / cm 2 .

Bemerkenswert ist der günstige Wirkungsgrad, da durch die Übereinstimmung von Ionenbewegung und Gebläserichtung keine Turbulenzen im Gas erzeugt werden, was jedoch bei mechanischen Gebläsen prinzipiell nicht vermeidbar ist. Erste Versuche ergaben, daß die Leistungsaufnahme eines solchen "Ionengebläses" unter den Wert von 1 Watt je bewegter Luftmenge von 1 l/s gesenkt werden kann, wenn keine zu hohen Luftgeschwindigkeiten oder Druckdifferenzen notwendig sind.The low efficiency is remarkable, since no turbulence is generated in the gas due to the correspondence of the ion movement and the direction of the blower, which, however, cannot be avoided in principle with mechanical blowers. Initial tests have shown that the power consumption of such an “ion blower” can be reduced below the value of 1 watt per moving amount of air of 1 l / s if no excessively high air speeds or pressure differences are necessary.

Eine vorzugsweise Ausführungsform der Erfindung besteht darin, daß auf der der Gegenelektrode abgewandten Seite der Entladungselektrode eine Hilfselektrode angeordnet ist, welche auf oder in der Nähe des Potentials der Entladungselektrode liegt und daß die Ionen an einem unter Hochspannung stehenden Draht erzeugt werden und von diesem Entladungsdraht zu einer geerdeten Gegenelektrode driften, die vorzugsweise aus einem oder mehreren Leitblechen besteht, deren Kanten zu dem Entladungsdraht par-L allel verlaufen, und daß die Hilfselektrode ebenfalls'aus einem Leitblech mit zu dem Entladungsdraht parallelen Kanten besteht.A preferred embodiment of the invention consists in that an auxiliary electrode is arranged on the side of the discharge electrode facing away from the counterelectrode, which is located at or near the potential of the discharge electrode and that the ions are generated on a wire under high voltage and from this discharge wire drift a grounded counter electrode, which preferably consists of one or more baffles, the edges of which run parallel to the discharge wire, and that the auxiliary electrode also consists of a baffle with edges parallel to the discharge wire.

Der Gegenstand der Erfindung ist in der Zeichnung schematisch an Hand beispielsweiser Ausführungsformen näher veranschaulicht, wobei Fig. 1 eine Darstellung der erfindungsgemäßen Vorrichtung mit Elektrode und Gegenelektrode, Fig. 2 eine serienweise Schaltung von Elektrode und Gegenelektrode, Fig. 3 eine andere Ausführungsform der erfindungsgemäßen Vorrichtung mit einer serienweisen Schaltung von Elektrode und Gegenelektrode und Fig. 4 eine spezielle Ausführungsform der erfindungsgemäßen Vorrichtung mit hintereinander und nebeneinander angeordneten Entladungsstrecken zeigen.The subject matter of the invention is illustrated schematically in more detail in the drawing using exemplary embodiments, in which FIG. 1 shows the device according to the invention with electrode and counterelectrode, FIG. 2 shows a series connection of electrode and counterelectrode, FIG. 3 shows another embodiment of the device according to the invention with a series connection of electrode and counterelectrode and FIG. 4 show a special embodiment of the device according to the invention with discharge paths arranged one behind the other and next to one another.

Gemäß Fig. 1 werden die Ionen innerhalb eines Führungsrohres 3 für den zu erzeugenden Gas oder Luftstrom durch ein radioaktives CC-Präparat 1 erzeugt, wobei die Unipolarität durch die Aufladung eines Rohres oder eines Plattenpaares 2 erzielt wird, in dem sich Ionen der gleichen Polarität nicht entladen. Diesem Plattenpaar 2 gegenüber befindet sich im Führungsrohr 3 eine vorzugsweise geerdete ring- oder plattenförmige Gegenelektrode 4, sodaß sich ein gerichtetes Feld ausbildet, längs dessen Feldlinien 5 die unipolaren Gasionen in Richtung der Gegenelektrode 4 wandern und durch Stoßprozesse mit neutralen Gasmolekülen, wobei vorzugsweise eine Impulsübertragung in der Bewegungsrichtung der Ionen stattfindet, eine makroskopische Bewegung des Gases in Feldrichtung einleiten.1, the ions are generated within a guide tube 3 for the gas or air flow to be generated by a radioactive CC preparation 1, the unipolarity being achieved by charging a tube or a pair of plates 2 in which ions of the same polarity are not unload. Opposite this pair of plates 2, there is a preferably grounded ring-shaped or plate-shaped counterelectrode 4 in the guide tube 3, so that a directed field is formed, along the field lines 5 of which the unipolar gas ions in the direction of the counterelectrode 4 and initiate a macroscopic movement of the gas in the field direction by means of collision processes with neutral gas molecules, preferably with a pulse transmission in the direction of movement of the ions.

Gemäß Fig. 2 werden die Ionen über eine Spitzenentladung erzeugt, wobei aus dem Plasmabereich um die hochaufgeladene Spitze 1' nur Ionen der gleichen Polarität austreten. Die Spitze 1' ist so geformt, daß die Feldlinien aus dem Plasmabereich der Spitze nur in Richtung der rechts von der Spitze_1' liegenden ringförmigen Gegenelektrode 2' laufen, sodaß sich durch ein isolierendes Führungsrohr 3 eine gerichtete Gas- oder Luftströmung 4 ausbilden kann. Durch Hintereinanderschaltung mehrerer Ionenstrecken kann neben einer Verstärkung der Gebläsewirkung auch die Bewältigung höherer Druckdifferenzen erreicht werden.According to FIG. 2, the ions are generated via a peak discharge, only ions of the same polarity emerging from the plasma region around the highly charged tip 1 ′. The tip 1 'is shaped in such a way that the field lines from the plasma area of the tip only run in the direction of the ring-shaped counterelectrode 2' to the right of the tip_1 ', so that a directed gas or air flow 4 can form through an insulating guide tube 3. By connecting several ion paths in series, in addition to increasing the blower effect, it is also possible to cope with higher pressure differences.

In Fig. 3 ist eine ähnliche Anordnung mit Entladungsdrähten 1" realisiert. Die einseitige Ionenbewegung bei Serienschaltung mehrerer Ionenstrecken wird durch eine Hilfselektrode 2" der gleichen Polarität und Spannung erreicht, während das Feld durch zwei geerdete Gegenelektroden 3" aufgebaut wird. So kann.sich durch isolierende Führungsplatten 4" wieder eine Luftströmung 5' ausbilden, die durchaus mit der Gebläseleistung kleiner Zimmerventilatoren vergleichbar ist.3 shows a similar arrangement with discharge wires 1 ". The one-sided ion movement when several ion paths are connected in series is achieved by an auxiliary electrode 2" of the same polarity and voltage, while the field is built up by two grounded counter electrodes 3 " again form an air flow 5 'by insulating guide plates 4 ", which is quite comparable to the blower output of small room fans.

In Fig. 4 ist eine technische Ausführung des in Fig. 3 dargelegten Prinzips beschrieben. Dabei werden mehrere Ebenen von Ionenstrecken übereinander angeordnet. Die geerdeten Gegenelektroden 1"' sowie die Hilfselektroden 2"' auf Drahtspannung können aus einem Blech gestanzt sein, wobei auch die Entladungsdrähte an der Hilfselektrode 2"' mit Punktschweißung 7 befestigt sind. Diese Anordnung setzt sich in Schichten übereinander fort: 3"', 4"', 5"', 8. Eine Abschlußelektrode 6 regelt die Menge der aus dem Gebläse austretenden Restionen (Pfeil). Eine isolierende Zwischenplatte 9 ermöglicht den Aufbau eines zweiten Gebläses, das mit Ionen der zweiten Polarität betrieben wird, um statische Aufladungen des gepumpten Gases zu vermeiden und einen Fehlstrom im Versorgungsnetz zu verhindern.4 describes a technical embodiment of the principle set out in FIG. 3. Several levels of ion paths are arranged one above the other. The grounded counter electrodes 1 "'and the auxiliary electrodes 2"' on wire tension can be punched out of sheet metal, the discharge wires also being attached to the auxiliary electrode 2 "'with spot welding 7. This arrangement is continued in layers one above the other: 3"', 4 "', 5"', 8. An Ab closing electrode 6 regulates the amount of resections emerging from the blower (arrow). An insulating intermediate plate 9 enables the construction of a second fan, which is operated with ions of the second polarity, in order to avoid static charging of the pumped gas and to prevent faulty current in the supply network.

Claims (7)

1. Vorrichtung zur Erzeugung einer gerichteten Strömung eines gasförmigen Mediums., z.B. eines Luftstromes unter Ausnützung des elektrischen Windes, dadurch gekennzeichnet, daß zur Bildung der Ionen eine unter hohem elektrischen Feld stehende Elektrode (2), etwa ein Draht vorgesehen ist, an welchem bei atmosphärischen Drücken im Bereich der Townsendentladung oder der Glimmentladung ein Entladungsstrom zwischen 10 A/cm und 10 -1A/cm2, vorzugsweise zwischen 10 5A/cm2, und 10-3A/cm2 fließt, daß eine vorzugsweise aus Leitflächen eines Strömungskanals (3) gebildete Gegenelektrode (4) angeordnet ist, daß in bevorzugter Weise die Kanten der Leitflächen (4) im wesentlichen parallel zu den Entladungsdrähten (2) verlaufen, sodaß sich die Ionen in eine Richtung (5) oder zumindest in einem Sektor der um die Emissionspunkte der Entladungselektrode (2) gedachten Kugeln mit einem öffnungswinkel, der weniger als 180° C beträgt, bewegen (Fig. 1).1. Device for generating a directed flow of a gaseous medium, for example an air flow using the electric wind, characterized in that a high electric field electrode (2), for example a wire, is provided to form the ions, on which at Atmospheric pressures in the area of Townsend discharge or glow discharge a discharge current between 10 A / cm and 10 -1 A / cm 2 , preferably between 1 0 5 A / cm 2 , and 10 -3 A / cm 2 , that flows preferably from baffles A flow channel (3) formed counter electrode (4) is arranged that the edges of the guide surfaces (4) preferably run substantially parallel to the discharge wires (2), so that the ions in one direction (5) or at least in one sector move the spheres around the emission points of the discharge electrode (2) with an opening angle that is less than 180 ° C. (FIG. 1). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß auf der der Gegenelektrode (3r") abgewandten Seite der Entladungselektrode (1") eine Hilfselektrode (2") angeordnet ist, welche auf oder in der Nähe des Potentials der Entladungselektrode (1") liegt (Fig. 3).2. Apparatus according to claim 1, characterized in that an auxiliary electrode (2 ") is arranged on the side of the discharge electrode (1") facing away from the counter electrode (3r "), which auxiliary electrode (2") is located on or in the vicinity of the potential of the discharge electrode (1 ") lies (Fig. 3). 3. Vorrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Ionen an einem unter Hochspannung stehenden Draht (1") erzeugt werden und von diesem Entladungsdraht (1") zu einer geerdeten Gegenelektrode (3") driften, die vorzugsweise aus einem oder mehreren Leitblechen besteht, deren Kanten zu dem Entladungsdraht (1") parallel verlaufen, und daß die Hilfselektrode (2") ebenfalls aus einem Leitblech mit zu dem Entladungsdraht (1") parallelen Kanten besteht (Fig. 3).3. Device according to one of claims 1 and 2, characterized in that the ions are generated on a high-voltage wire (1 ") and from this discharge wire (1") to a grounded counter electrode (3 "), which preferably drift out one or more baffles, the edges of which run parallel to the discharge wire (1 "), and that Auxiliary electrode (2 ") also consists of a baffle with edges parallel to the discharge wire (1") (Fig. 3). 4.Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Gegenelektrode und vorzugsweise auch die Hilfselektrode aus Drähten bestehen, deren Durchmesser größer sind, als der Durchmesser des Entladungsdrahtes, oder deren Temperatur tiefer ist, als die des Entladungsdrahtes, oder die in mehrfacher Zahl vorhanden sind.4.Device according to one of claims 1 to 3, characterized in that the counter electrode and preferably also the auxiliary electrode consist of wires whose diameter is larger than the diameter of the discharge wire, or whose temperature is lower than that of the discharge wire, or the exist in multiple numbers. 5.Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sämtliche Potentiale der Anordnung gespiegelt sind, d.h. Entladungs- und Hilfselektrode auf oder in der Nähe des Erdpotentials und Gegenelektrode auf Hochspannungspotential liegen.5.Device according to one of claims 1 to 4, characterized in that all potentials of the arrangement are mirrored, i.e. Discharge and auxiliary electrodes are on or near the earth potential and counterelectrode at high voltage potential. 6.Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die in der Nähe des Erdpotentials befindliche Entladungselektrode als Widerstandsdraht oder als Widerstandsband ausgebildet und beheizt ist.6.Device according to claim 5, characterized in that the discharge electrode located in the vicinity of the earth potential is designed and heated as a resistance wire or as a resistance band. 7.Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß Hilfselektrode, Entladungselektrode und Gegenelektrode in verschiedenen Kombinationen mehrfach neben- und hintereinander bzw. übereinander angeordnet sind.7.Device according to one of claims 1 to 6, characterized in that auxiliary electrode, discharge electrode and counter electrode are arranged several times next to each other and one behind the other or one above the other in different combinations.
EP80890014A 1979-11-20 1980-02-04 Device for generating a directed current of a gaeous medium Expired EP0029421B1 (en)

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AT738479 1979-11-20
AT7384/79 1979-11-20

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WO1986007500A1 (en) * 1985-06-06 1986-12-18 Astra-Vent Ab An air transporting arrangement
AT389414B (en) * 1988-06-29 1989-12-11 Fleck Carl M Dr Gas-electronic fan
US5006761A (en) * 1985-12-20 1991-04-09 Astra-Vent Ab Air transporting arrangement
WO1992019030A1 (en) * 1991-04-12 1992-10-29 Naum Goldstein Device for the production of defined ionised gases or ionisation products
EP0657979A1 (en) * 1993-10-18 1995-06-14 Fleck, Carl Maria, Prof. Dr. Gas-electronic blower

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DE102019114053A1 (en) * 2019-05-14 2020-11-19 Eberspächer Exhaust Technology GmbH & Co. KG Device and method for influencing the acoustic behavior of an exhaust system of an internal combustion engine

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US3296491A (en) * 1961-09-19 1967-01-03 Martin M Decker Method and apparatus for producing ions and electrically-charged aerosols
US3638058A (en) * 1970-06-08 1972-01-25 Robert S Fritzius Ion wind generator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986007500A1 (en) * 1985-06-06 1986-12-18 Astra-Vent Ab An air transporting arrangement
AU595179B2 (en) * 1985-06-06 1990-03-29 Astra-Vent A.B. Ion-wind air transporting arrangement
US5006761A (en) * 1985-12-20 1991-04-09 Astra-Vent Ab Air transporting arrangement
AT389414B (en) * 1988-06-29 1989-12-11 Fleck Carl M Dr Gas-electronic fan
WO1992019030A1 (en) * 1991-04-12 1992-10-29 Naum Goldstein Device for the production of defined ionised gases or ionisation products
EP0657979A1 (en) * 1993-10-18 1995-06-14 Fleck, Carl Maria, Prof. Dr. Gas-electronic blower

Also Published As

Publication number Publication date
JPS5676000A (en) 1981-06-23
DE3071704D1 (en) 1986-09-25
EP0029421B1 (en) 1986-08-20

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