Recherche Images Maps Play YouTube Actualités Gmail Drive Plus »
Connexion
Les utilisateurs de lecteurs d'écran peuvent cliquer sur ce lien pour activer le mode d'accessibilité. Celui-ci propose les mêmes fonctionnalités principales, mais il est optimisé pour votre lecteur d'écran.

Brevets

  1. Recherche avancée dans les brevets
Numéro de publicationUS2765975 A
Type de publicationOctroi
Date de publication9 oct. 1956
Date de dépôt29 nov. 1952
Date de priorité29 nov. 1952
Numéro de publicationUS 2765975 A, US 2765975A, US-A-2765975, US2765975 A, US2765975A
InventeursLindenblad Nils E
Cessionnaire d'origineRca Corp
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
Ionic wind generating duct
US 2765975 A
Images(1)
Previous page
Next page
Description  (Le texte OCR peut contenir des erreurs.)

` OC 9, 1956 N. E. LINDENBLAD IONIC WIND GENERATING DUCT Filed Nov. 29, 1952 TTOR NE Y IONIC WIND GENERATING DUCT Nils E. Lindenblad, Princeton, N. J., assignor to Radio Corporation of America, a corporation of Deiaware Application November 29, 1952, Serial No. 323,328 3 Claims. (Cl. Mtl- 69) This invention relates to apparatus for converting one form of energy into another and more useable form of energy, and more particularly, although not necessarily exclusively, to novel means for producing pressure by an electrical discharge upon fluids, such as air or gas, in order to move these fluids.

A system and apparatus for producing motion in fluids, such as air or gas, involving the use of electrodes having special conductive properties energized at high voltages is known. Also, electro-mechanical devices in the nature of rotating and/ or oscillating fan blades are well known. In order to produce sufficient velocity in the air or gas which is caused to be moved, conventional practice has dictated certain minimal requirements relative to the size and the speed of the movable blades, the maximum useable values of which, often times deprive the device of complete fulfillment of its objective. Namely, that of moving a large volume of air or gas swiftly and etiiciently. Closely allied to the problems of speed and size of the device is the problem of noise. Noise is an inherent characteristic of any device in which frictionally engaged parts are caused to move in contact with one another 4or in which turbulence in a fluid stream is produced. The friction of the fluid, whether, for example, air or ga-s is moved causes production of noise. There is always a certain amount of frictional loss as well as noise encountered when using devices having parts that move and which make contact with the air.

It is an object, therefore, of the invention to provide a novel means for producing motion upon fluids, such as air or gas, without the use of any moving parts.

It is also an object of the invention to provide a device in the nature of or having the effect of a fan in which fluids, such as air or gas, may be caused to be moved at high velocities.

It is a further object of the invention to obtain a directed as well as a magnified propulsion effect upon air or upon a gas in general, from corona discharge points.

A device constructed in accordance with the teaching of the present invention may comprise a pipe or duct composed of alternate conductive and insulating sleeves. The sleeves may be cylindrical in cross section. A corona discharge device is positioned near the entrance to each conductive section of the duct. The discharge device, employed in practicing this invention, resembles a broom and the term broom will, therefore, be applied to it. All -of the discharge brooms are electrically connected in parallel and all of the conductive sleeves are likewise connected in parallel. Either the discharge brooms or the conductive sleeves may be grounded. The propelling forces which are obtained in each section upon application of high voltage to the device are thus made to be serially additive. The emerging ions are neutralized by means of polarized sections or members placed within and across the exit orifice of the apparatus. The members just referred to may be in the nature of grids.

The novel features that are considered characteristic of the invention are set forth with particularity in the appended claims. The invention itself, however, both as to its organization and method of operation as well as additional objects and advantages thereof will best understand from the following description when read in connection with the accompanying drawing, in which:

Figure 1 is a schematic diagram of a wind duct embodying the present invention and including the circuit connections therefor; and

Figure 2 is a cross section of the wind duct o f Figure 1 along the line 2 2 of Figure l.

Detailed reference will now be made to Figure l, in which there is shown a schematic diagram of the cylindrical tube or pipe comprising an illustrative example of the wind generating duct of this invention. The duct 10, in the illustrative example shown, comprises a seriesv of alternate conductive and insulating cylinders or sleeves. The insulating cylinders 12 may be made of Bakelite or other suitable insulating material. The conducting cylinders 14, are or may be fabricated from conductive material, such for example, as brass. As shown, the conductive sections are connected to a voltage reference point or are grounded through leads 15. The various conducting and insulating portions are secured together, end to end, to form a long tube or pipe. The duct 10 shown in Figure 1, for example, comprises five conducting hollow metallic cylinders or sleeves 12 which are or may be constructed of brass. Between each conductive cylinder and concentric therewith are positioned four insulating elements in the form of cylindrical tubes or sleeves 14 which are or may be constructed of Bakelite.

Each insulating duct element has an ion producing discharge broom 16 fastened to a conductive support member 1S disposed within the air tube. An insulating lead-in member 19 may be used to provide rigidity for the broom support member 18. A high voltage lead 20 is brought out through, or by means of, the support. The leads 20 are or may be connected together as shown. A suitable high voltage source 21 has one terminal connected to the leads 2i) and its remaining terminal connected to ground. This source 21 provides direct current, although, alternating current could be used, for exciting the brooms 16. The terminal connected to the brooms may be of either polarity.

Each one of the discharge brooms 16 is roughly umbrella shaped and each broom is composed of a multiplicity of fine wires 22 which are bundled at one end 24 and which are bent to radiate from a central point somewhat similar to the radiating ribs in an umbrella or fan. The outer points of the wires 22 lie in a circle shown in Figure 2, the center of which faces in a direction so as to move air associated therewith toward an exit orifice. The supports 18 for the discharge brooms 16 are secured to the inside Wall of the insulating duct elements in a plane perpendicular to the longitudinal axis of the tube and positioned so that each of the brooms is directly in the path of the entering air.

The left side of the air duct 10, as shown in Figure l, is provided with an air intake orifice 28. The opposite end of the air duct comprises an insulating duct element 30 which is slightly longer, in the illustrative embodiment shown, than the air intake element and includes the outlet orifice 32. A plurality of ion neutralizing grids 34 comprising a predetermined number of vertically and/or horizontally disposed wires are fastened across the duct element 30. Positive and negative voltage sources 36 and 3S, respectively, for the neutralizing grids, are connected to the grid wires. The position or order of arrangement of the neutralizing members 34 is immateriai.

The high voltage source 21, which may be either alternating or direct current, supplies voltage on the order of ten thousand volts to the parallel connected ion producing discharge brooms 16. Either the brooms 1.6 or the sleeves 12 may be grounded.

The application of high voltage to the ion producing discharge brooms 16 establishes a corona around the wires of the brooms. The ions derive a velocity from the electrical ield which has thus been generated in respouse to the application of the high voltage to the brooms. In so doing, the ions induce a motion in all the air with which they are mixed. This induced motion is in the general direction of the electric field. The apparatus thus acts as a four stage additive wind pressure generator.

There has thus been described a novel and simple air pressure generator by means of which a movement of a uid medium, such as air, can be eiected in a silent, steady, serially additive stream.

What is claimed is:

1. An ionic wind generating structure comprising a duct, said duct having alternate conducting and insulating sections, a pluarlity of corona discharge means, means for energizing said corona discharge means, and a plurality of conductive support members providing means for connecting said corona discharge means to said energizing means, one of said conductive support members being disposed within each of said insulating sections, one of said corona discharge means being secured to each of said support members, each of said corona discharge means extending from its support member within said insulating section across the junction of said insulating section with said adjacent conducting section, each of said corona discharge means being arranged to extend from said support member longitudinally towards a preselected end of said duct to additively induce fluid motion in said preselected direction.

2. An ionic wind generating structure comprising a duct, said duct having alternate conducting and insulating sections, a plurality of corona discharge brooms characterized by wires bundled together at one end thereof to form a junction point and radiating radially and longitudinally in a substantially uniform direction, means for energizing said corona discharge brooms, a plurality of conductive support members providing means for connecting said corona discharge brooms to said energizing means, one of said conductive support members being disposed within each of said insulating sections, one of said corona discharge brooms being secured at its junction point to each of said support members, each of said corona discharge brooms being arranged to extend longitudinally from its support member within said insulating section across the junction of said section with said adjacent conducting section, and each of said dis charge brooms being arranged to have said wires extend longitudinally from said junction point towards a preselected end of said duct to additively induce fluid motion in said preselected direction.

3. An ionic wind generating structure comprising a duct having an entrance and an exit, said duct having alternate conducting and insulating sections, a plurality of corona discharge brooms characterized by wires bundled together at one end thereof to form a junction point and radiating radially and longitudinally in a substantially uniform direction, means for energizing said corona discharge brooms, a plurality of conductive support members providing means for connecting said corona discharge brooms to said energizing means, one of said conductive support members being disposed within each of said insulating sections, one of said corona discharge brooms being secured at its junction point to each of said support members, each of said corona discharge brooms being arranged to extend longitudinally from support member within said insulating section across the junction of said section with said adjacent conducting section, each of said discharge brooms being arranged to have its wires extend longitudinally from its junction points toward the exit of said duct to additively induce a wind towards said exit, said conductive sections being electrically connected in parallel, said brooms being electrically connected in parallel, and netralizing grids being disposed within the exit of said duct.

References Cited in the tile of this patent UNITED STATES PATENTS 1,335,829 Gerdien Apr. 6, 1920 1,971,940 Pirani Aug. 28, 1934 2,022,465 Hansell Nov. 26, 1935 2,031,927 Braselton Feb. 25, 1936 2,159,747 Mendenhall May 23, 1939 2,182,751 Reitherman Dec. 5, 1939 2,202,823 Bennett June 4, 1940 2,204,564 Bennett June 18, 1940 2,239,693 Bennett Apr. 29, 1941 2,239,694 Bennett Apr. 29, 1941 2,239,695 Bennett Apr. 29, 1941 2,257,728 Bennett Oct. 7, 1941 2,279,583 Slayter Apr. 14, 1942 2,279,586 Bennett Apr. 14, 1942 2,295,152 Bennett Sept. 8, 1942 2,327,588 Bennett Aug. 24, 1943 2,404,997 Tillis et al July 30, 1946 2,449,972 Beach Sept. 28, 1948 2,460,175 Hergenrother Ian. 25, 1949 2,497,924 Beach Feb. 21, 1950 2,578,009 Linder Dec. 11, 1951 2,636,664 Hertzler Apr. 28, 1953 2,640,158 Hicks May 26, 1953

Citations de brevets
Brevet cité Date de dépôt Date de publication Déposant Titre
US1335829 *6 oct. 19156 avr. 1920Siemens AgArrangement for evacuating gases fbsom vessels
US1971940 *7 juil. 193128 août 1934Gen ElectricGaseous electric discharge device
US2022465 *14 déc. 193226 nov. 1935Rca CorpElectrical vacuum pump
US2031927 *4 déc. 193125 févr. 1936Sirian Lamp CoLamp
US2159747 *3 oct. 193523 mai 1939Bell Telephone Labor IncGlow discharge device
US2183751 *3 févr. 193619 déc. 1939Schweitzer & Conrad IncCircuit interrupter
US2202823 *10 août 19384 juin 1940Electronic Res CorpRectification system
US2204564 *8 avr. 193918 juin 1940Elcctronic Res CorpRectifier
US2239693 *4 févr. 193929 avr. 1941Electronic Res CorpElectric discharge electrode
US2239694 *4 févr. 193929 avr. 1941Electronic Res CorpElectric discharge electrodes and circuit arrangements therefor
US2239695 *6 févr. 193929 avr. 1941Electronic Res CorpCapacitive target-emitter for electric discharge devices
US2257728 *5 avr. 19397 oct. 1941Slayter Electronic CorpRectifier
US2279583 *6 avr. 193914 avr. 1942Slayter Electronic CorpChemical synthesis with electric precipitation
US2279586 *4 févr. 193914 avr. 1942Slayter Electronic CorpElectric discharge system
US2295152 *31 août 19408 sept. 1942Bennett Willard HFluid movement with precipitation
US2327588 *1 juin 194024 août 1943Games SlayterApparatus for conversion of energy
US2404997 *9 févr. 194430 juil. 1946Lovatt John BProduction of high vacua
US2449972 *27 juin 194528 sept. 1948Robin BeachElimination of static electricity
US2460175 *31 juil. 194525 janv. 1949Hazeltine Research IncIonic vacuum pump
US2497924 *5 nov. 194621 févr. 1950Robin BeachElimination of static electricity from aircraft
US2578009 *23 déc. 194711 déc. 1951Rca CorpElectronic high vacuum apparatus
US2636664 *28 janv. 194928 avr. 1953Afton Hertzler ElmerHigh vacuum pumping method, apparatus, and techniques
US2640158 *30 janv. 195226 mai 1953IonicsIon controller
Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
US2960614 *19 mars 195615 nov. 1960Mallinckrodt George EElectric jet-forming apparatus
US3054553 *11 août 195918 sept. 1962Cottrell Res IncElectrostatic blower apparatus
US3071705 *6 oct. 19581 janv. 1963Grumman Aircraft Engineering CElectrostatic propulsion means
US3083318 *27 avr. 195926 mars 1963Hanscom Frank EBrushes with means for neutralizing static charges
US3095163 *13 oct. 195925 juin 1963Petroleum Res CorpIonized boundary layer fluid pumping system
US3116433 *15 juin 195931 déc. 1963Giannini Controls CorpProduction of neutral molecular beams
US3120363 *11 sept. 19584 févr. 1964Electronatom CorpFlying apparatus
US3135207 *19 juil. 19612 juin 1964Univ Cincinnati Res FoundationMethod and apparatus for displacing dielectric liquids
US3146849 *20 oct. 19591 sept. 1964Joseph Tennyson JamesMethod and apparatus for acoustically silencing high velocity gases
US3155857 *1 juin 19603 nov. 1964Thompson Ramo Wooldridge IncIon beam generating system
US3182496 *12 déc. 196111 mai 1965Holderer Oscar CElectric arc driven wind tunnel
US3212442 *23 avr. 196219 oct. 1965Litton Systems IncIon drag pumps
US3239130 *10 juil. 19638 mars 1966Cons Vacuum CorpGas pumping methods and apparatus
US3308344 *4 mars 19657 mars 1967Ener Jet CorpHigh voltage antistatic apparatus
US3361337 *6 août 19652 janv. 1968James N. HurstIonic wind generators
US3364389 *16 avr. 196416 janv. 1968George N.J. MeadLow loss conductor
US3374743 *24 août 196626 mars 1968Gen Electric Co LtdPumps
US3374941 *30 juin 196426 mars 1968American Standard IncAir blower
US3398685 *11 sept. 196127 août 1968Litton Systems IncIon drag pumps
US3436960 *23 déc. 19668 avr. 1969Us Air ForceElectrofluidynamic accelerator
US3447322 *25 oct. 19663 juin 1969Trw IncPulsed ablating thruster apparatus
US3520110 *19 déc. 196614 juil. 1970Hughes Aircraft CoElectrical isolator for gas feed line
US3573547 *27 janv. 19696 avr. 1971Augion Unipolar CorpMethod of aerodynamically ejecting ions
US3583161 *1 août 19668 juin 1971Atomic Energy CommissionRadioisotope/electrothermal thruster
US3611030 *1 oct. 19695 oct. 1971Herbert ProductsIonization apparatus
US3624448 *3 oct. 196930 nov. 1971Consan Pacific IncIon generation apparatus
US3695040 *17 mars 19703 oct. 1972Mason Michael D LAircraft power plant
US3795838 *27 juin 19725 mars 1974Hill AAerodynamic large volume gaseous electric discharge system
US3938345 *3 oct. 197417 févr. 1976Agency Of Industrial Science & TechnologyCooling method by use of corona discharge
US3976916 *15 janv. 197524 août 1976Consan Pacific IncorporatedAntistatic equipment
US4096544 *9 déc. 197620 juin 1978Vladimir IgnatjevAir ionizer
US4210847 *28 déc. 19781 juil. 1980The United States Of America As Represented By The Secretary Of The NavyElectric wind generator
US4227894 *10 oct. 197814 oct. 1980Proynoff John DIon generator or electrostatic environmental conditioner
US4231766 *11 déc. 19784 nov. 1980United Air Specialists, Inc.Two stage electrostatic precipitator with electric field induced airflow
US4250804 *21 févr. 197917 févr. 1981Consan Pacific IncorporatedIon enhanced smoke treatment of edibles
US4326454 *6 avr. 198127 avr. 1982Consan Pacific IncorporatedIon treatment enhancement
US4380720 *19 nov. 198019 avr. 1983Fleck Carl MApparatus for producing a directed flow of a gaseous medium utilizing the electric wind principle
US4388667 *1 mai 198114 juin 1983Consan Pacific IncorporatedControl of static neutralization
US4390923 *6 août 198128 juin 1983Consan Pacific IncorporatedControl of static neutralization
US4484249 *19 avr. 198220 nov. 1984Consan Pacific IncorporatedControl of static neutralization employing cables and wires
US4498116 *16 janv. 19845 févr. 1985Saurenman Donald GControl of static neutralization employing positive and negative ion distributor
US4502091 *21 févr. 198426 févr. 1985Saurenman Donald GPositive and negative ion distributor bar
US4502093 *21 sept. 198226 févr. 1985Consan Pacific IncorporatedControl of static neutralization employing cables and wires
US4626917 *10 déc. 19842 déc. 1986Consan Pacific IncorporatedStatic neutralization employing non-corroding ion dispensing tips
US4967119 *2 déc. 198630 oct. 1990Astra-Vent AbAir transporting arrangement
US5006761 *2 déc. 19869 avr. 1991Astra-Vent AbAir transporting arrangement
US5077500 *4 févr. 198831 déc. 1991Astra-Vent AbAir transporting arrangement
US5231824 *9 août 19913 août 1993Dick Robert C VanIon beam and ion jet stream motor
US6145298 *6 mai 199714 nov. 2000Sky Station International, Inc.Atmospheric fueled ion engine
US688831418 nov. 20023 mai 2005Kronos Advanced Technologies, Inc.Electrostatic fluid accelerator
US691969828 janv. 200319 juil. 2005Kronos Advanced Technologies, Inc.Electrostatic fluid accelerator for and method of controlling a fluid flow
US69374553 juil. 200230 août 2005Kronos Advanced Technologies, Inc.Spark management method and device
US696347915 déc. 20038 nov. 2005Kronos Advanced Technologies, Inc.Method of and apparatus for electrostatic fluid acceleration control of a fluid flow
US712207025 août 200517 oct. 2006Kronos Advanced Technologies, Inc.Method of and apparatus for electrostatic fluid acceleration control of a fluid flow
US71507808 janv. 200419 déc. 2006Kronos Advanced Technology, Inc.Electrostatic air cleaning device
US71577042 déc. 20032 janv. 2007Kronos Advanced Technologies, Inc.Corona discharge electrode and method of operating the same
US718229512 nov. 200227 févr. 2007Scott D. RedmondPersonal flight vehicle and system
US718280529 nov. 200527 févr. 2007Ranco Incorporated Of DelawareCorona-discharge air mover and purifier for packaged terminal and room air conditioners
US722649629 nov. 20055 juin 2007Ranco Incorporated Of DelawareSpot ventilators and method for spot ventilating bathrooms, kitchens and closets
US722649729 nov. 20055 juin 2007Ranco Incorporated Of DelawareFanless building ventilator
US726256423 mars 200428 août 2007Kronos Advanced Technologies, Inc.Electrostatic fluid accelerator for and a method of controlling fluid flow
US731175629 nov. 200525 déc. 2007Ranco Incorporated Of DelawareFanless indoor air quality treatment
US74105326 févr. 200612 août 2008Krichtafovitch Igor AMethod of controlling a fluid flow
US741755329 nov. 200526 août 2008Young Scott GSurface mount or low profile hazardous condition detector
US753245122 mai 200612 mai 2009Kronos Advanced Technologies, Inc.Electrostatic fluid acclerator for and a method of controlling fluid flow
US759495830 août 200529 sept. 2009Kronos Advanced Technologies, Inc.Spark management method and device
US80494268 août 20081 nov. 2011Tessera, Inc.Electrostatic fluid accelerator for controlling a fluid flow
US8091836 *19 déc. 200710 janv. 2012Pratt & Whitney Rocketdyne, Inc.Rotary wing system with ion field flow control
US8488294 *21 avr. 200916 juil. 2013Tessera, Inc.Ionic fluid flow accelerator
US20090261268 *21 avr. 200922 oct. 2009Matthew SchwiebertIonic fluid flow accelerator
WO2001004537A1 *7 juil. 200018 janv. 2001Applied Plasma Physics AsA method and arrangement for impelling a non-conducting fluid in a pipeline
WO2006060659A2 *30 nov. 20058 juin 2006Ranco IncCorona-discharge air mover and purifier for fireplace and hearth
Classifications
Classification aux États-Unis315/111.91, 417/48, 313/309, 361/230, 310/308
Classification internationaleH02N3/00, F04F7/00, F04D33/00
Classification coopérativeF04D33/00, H02N3/00, F04F7/00
Classification européenneF04F7/00, F04D33/00, H02N3/00