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US2052869A - Device for deflecting a stream of elastic fluid projected into an elastic fluid - Google Patents

Device for deflecting a stream of elastic fluid projected into an elastic fluid Download PDF

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Publication number
US2052869A
US2052869A US1736135A US2052869A US 2052869 A US2052869 A US 2052869A US 1736135 A US1736135 A US 1736135A US 2052869 A US2052869 A US 2052869A
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fluid
elastic
stream
discharge
flow
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Coanda Henri
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Coanda Henri
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15CFLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00Circuit elements having no moving parts
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D02G1/161Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam yarn crimping air jets
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46Arrangements of nozzles
    • F04F5/464Arrangements of nozzles with inversion of the direction of flow
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00Fluid sprinkling, spraying, and diffusing
    • Y10S239/07Coanda
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00Rotary kinetic fluid motors or pumps
    • Y10S415/914Device to control boundary layer
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/2278Pressure modulating relays or followers
    • Y10T137/2322Jet control type

Description

Sept. 1, 936. coAN 2,052,869

' H. DA DEVICE FOR DEFLECTING A STREAM OF EL IC FLUID PR CTED INT N ELASTIC-FLU ed April 1935 INVEN'TOR HENRI-UGANDA flamwofi AITTORNEYS Patented Sept. 1," 1936 UNITED 'STATES PATENT OFFICE ELASTIC FLUID Henri Coanda, Clichy, France Application April 19, 1935, Serial No. 17,361 In France October 8, 1934 team. (or. 299-101) It is an observed i'act that when astream or sheet oi fluid issues through a suitable oriflce, into another fluid, it will carry along with it a portion of the surrounding fluid, it its velocityis mflicient. In particular, if a sheet of gas at high velocity issues into an atmosphere of another gas of any kind, this will produce, at the point of discharge of the said sheet of gas, a suction efl'ect, thus drawing forward the adjacent gas.

Ii, at the outlet of the 'fluidstream or sheet, there is set up an unbalancing effect on the flow oi the surrounding fluid induced by said stream, the latter will move towards the side on which the flow oi the surrounding fluid has been made more dimcult.

It is thus evident that it will be possible, by a suitable checking of the surrounding fluid on one side of the oriflce from which the fluid stream or sheet is discharged at high velocity, to act in- 0 effect in the flow of the surrounding fluid induced by a sheet or stream of fluid which is dis- ,charged thereinto at high velocity.

For this purpose, the discharge orifices for the fluid each include, on the side toward which the said sheet or stream is to be deflected, guiding means, for instance a flap which is suitably inclined according to the rate of flow and the velocity of the fluid, and said flap may be more or less extended and may be more or less inclined, according to the path which the said stream is to be made to follow. On the other hand, by a proper knowledge 01 the physical constants of the surrounding fluid and of the fluid discharged the direct reactions due to the abrupt discharge of one fluid intoanother; which reactions are 55 even greatly increased by the fact that on the are discharged at high speed into another fluid 5 through a nozzle, in the. case of an equilibrium or a lack of equilibrium of the facilities oi withdrawal of the surrounding fluid at the sides of the stream.

Fig. 1 shows the free discharge of a fluid l0 stream l, issuing from a nozzle, for instance, whose cross section has the form of ,a slbt 2, also showing the induced flow oi the surrounding fluid according to the arrows 3.

Fig. 2 shows the checking of the surrounding it fluid on one side of the stream by means, of a flap 4 which prevents the flow oi the surrounding air from space 5, and also the deflection, according to the arrows t, of the issuing stream discharged from the said nozzle.

Fig. 3 represents the flap d which is extended according to a given outline, thus producing a strong suction, at 6, of a stream which is entirely turned about, according to the arrows i. This will eliminate the impact upon the surrounding fluid, which occurs in front of a sheet oi fluid discharged at high velocity into another fluid.

I 'claim 1. A device for controllingthe discharge into I an elastic fluid atmosphere oian elastic fluid moving at a high velocity, which compriseaa part provided with an outlet conduit, and means carried by said part," located wholly on only one side of the line of discharge of said conduit, for checking the flow of the elastic fluid of said atissuing from said conduit.

2. A device for controlling the discharge into an elastic fluid atmosphere of an elastic fluid moving with a high velocity, which comprises, a part provided with an outlet conduit, and an element carried by said part projecting beyond the outlet of said conduit, located wholly on only one side of the line of discharge of said conduit,

for checking, on this side, the flow oi. the elastic fluid of said atmosphere induced by the stream of elastic fluid issuing from said conduit. 7 3. A device according to claim 2 in which the outline of the projecting element is curved outwardly from the line of discharge oi the conduit until it runs in 'a direction opposite to the direc--v tionoi flow of the elastic fluid through said conduit, in order to cause thestream of said elastic fluid issuing from said conduit to flow along said outline and reverse its direction.

mosphere induced by the stream of elastic fluid 4. A structure tor the discharge of an eiaatic fluid under pressure into the atmosphere which includes a part having a chamber formed therein for containing said elastic fluid under pressure. said part being provided with a slot-shaped passage connecting said chamber with the atmosphere, and a projection on the outer surface I said part extending along one edge of said sl t and located wholly on one side or the line oi! di charge of said slot.

5. A structure for the discharge of an elastic fluid under pressure into the atmosphere which includes a part having a chamber formed therein for containing said elastic fluid under pressure, said part being provided with a slot-shaped passage connecting said chamber with the atmosphere, and a projection on the outer surface or said part running along one edge of said slot and located wholly on one side oi! the line of discharge of said slot, said projection being tangential to said edge of the slot and being curved outwardly from said line of discharge until it runs in a direction opposite to the direction of flow of said elastic fluid through said passage,

in order to cause the stream of elastic fluid issuing from said passage to flow along said rounded or curved projection and reverse its direction. HENRI COANDA.

US2052869A 1934-10-08 1935-04-19 Device for deflecting a stream of elastic fluid projected into an elastic fluid Expired - Lifetime US2052869A (en)

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Cited By (96)

* Cited by examiner, † Cited by third party
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US2699644A (en) * 1946-11-21 1955-01-18 Coanda Henri Hydropropeller
DE1009435B (en) * 1955-02-07 1957-05-29 Canadian Patents Dev Internal combustion engines, engine, especially a gas turbine engine
US2796147A (en) * 1950-11-18 1957-06-18 Sebac Nouvelle Sa Cyclone separator
US2920448A (en) * 1955-07-29 1960-01-12 Sebac Nouvelle Sa Apparatus for imparting rapid speed to a mass of fluid
US2935245A (en) * 1956-12-10 1960-05-03 Westinghouse Electric Corp Gas reaction rotors
US2946540A (en) * 1948-09-13 1960-07-26 Sebac Nouvelle Sa Jet propelled aircraft
DE1231484B (en) * 1964-09-26 1966-12-29 Gruenzweig & Hartmann Silencer for ground operation of jet engines
US3296678A (en) * 1963-07-01 1967-01-10 Du Pont Method and apparatus for producing nonwoven webs
US3314122A (en) * 1963-07-01 1967-04-18 Du Pont Apparatus for forming non-woven web structures
US3316657A (en) * 1965-10-23 1967-05-02 Huyck Corp Air deflector utilizing coanda effect
US3321891A (en) * 1964-07-14 1967-05-30 Coanda Henri Apparatus for transporting atomizable material
US3339420A (en) * 1963-05-01 1967-09-05 Honeywell Inc Control apparatus
US3387647A (en) * 1966-08-15 1968-06-11 Heskestad Gunnar Air treating means including an air flow directing system
US3431009A (en) * 1967-01-06 1969-03-04 Western Electric Co Pickup device for supporting workpieces on a layer of fluid
US3639094A (en) * 1969-01-30 1972-02-01 Gerard Pierre Marie Joseph Dup Space-heating burner
US3686951A (en) * 1970-09-02 1972-08-29 Honeywell Inc Digital absolute pressure ratio indicator
DE2222453A1 (en) * 1972-05-08 1973-11-22 Ltg Lufttechnische Gmbh air outlet
US3853695A (en) * 1972-10-12 1974-12-10 S Back Entraining a liquid into a fiber slurry to accelerate it prior to discharge from a flow path onto a forming wire
US3909037A (en) * 1974-05-22 1975-09-30 Olin Corp Safety device with coanda effect
US4018483A (en) * 1974-09-18 1977-04-19 Smith D Kermit Process and apparatus for dislodging and conveying material from a surface with a positive pressure fluid stream
US4024790A (en) * 1975-10-31 1977-05-24 The United States Of America As Represented By The Secretary Of The Army Bore gas evacuation device for cannons and guns
US4146357A (en) * 1975-07-30 1979-03-27 Hotwork International Limited Fuel fired burners
EP0017437A1 (en) * 1979-03-29 1980-10-15 Sybron Corporation Gas flow and sampling devices and gas monitoring system
US4252512A (en) * 1978-11-24 1981-02-24 Kornylak Corporation Coanda effect support for material processing
WO1981002172A1 (en) * 1980-01-25 1981-08-06 I Reba System and method for dispersing filaments
US4369549A (en) * 1980-05-16 1983-01-25 Badische Corporation Blending method using a roving disintegrator-dispenser
US4374789A (en) * 1981-09-08 1983-02-22 Teledyne Industries, Inc. Metallic particle generation device
US4405296A (en) * 1981-09-08 1983-09-20 Teledyne Industries, Inc. Metallic particle generation device
US4472886A (en) * 1982-01-25 1984-09-25 Crown Zellerbach Corporation System and method for venting cooling air from filaments
US4484710A (en) * 1983-03-11 1984-11-27 The United States Of America As Represented By The Secretary Of The Army Fire suppressant nozzle
US4494422A (en) * 1982-09-16 1985-01-22 The United States Of America As Represented By The Secretary Of The Army Fluidic transmission controller
US4557637A (en) * 1978-09-13 1985-12-10 The British Petroleum Company Limited Solids transfer system
US4698134A (en) * 1983-11-25 1987-10-06 Consolidated-Bathurst, Inc. Method for cleaning papermaking fabrics
US4718178A (en) * 1985-11-29 1988-01-12 Whipple Rodger E Gas nozzle assembly
US4809412A (en) * 1985-12-04 1989-03-07 E. I. Du Pont De Nemours And Company Apparatus for producing a novelty nub yarn
US4870728A (en) * 1987-05-05 1989-10-03 E. I. Du Pont De Nemours And Company Apparatus for creating air turbulence
US4921408A (en) * 1988-11-28 1990-05-01 Graco Inc. Non-icing quiet air-operated pump
US4963228A (en) * 1989-10-27 1990-10-16 J. M. Voith Gmbh Headbox having Coanda nozzle for mixing slurry therein
US5035110A (en) * 1985-12-04 1991-07-30 E. I. Du Pont De Nemours And Company Nub yarn
US5208448A (en) * 1992-04-03 1993-05-04 Esab Welding Products, Inc. Plasma torch nozzle with improved cooling gas flow
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US5402943A (en) * 1990-12-04 1995-04-04 Dmw (Technology) Limited Method of atomizing including inducing a secondary flow
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US5497944A (en) * 1990-03-21 1996-03-12 Dmw (Technology) Limited Atomising devices and methods
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Cited By (145)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2699644A (en) * 1946-11-21 1955-01-18 Coanda Henri Hydropropeller
US2946540A (en) * 1948-09-13 1960-07-26 Sebac Nouvelle Sa Jet propelled aircraft
US2796147A (en) * 1950-11-18 1957-06-18 Sebac Nouvelle Sa Cyclone separator
DE1009435B (en) * 1955-02-07 1957-05-29 Canadian Patents Dev Internal combustion engines, engine, especially a gas turbine engine
US2920448A (en) * 1955-07-29 1960-01-12 Sebac Nouvelle Sa Apparatus for imparting rapid speed to a mass of fluid
US2935245A (en) * 1956-12-10 1960-05-03 Westinghouse Electric Corp Gas reaction rotors
US3339420A (en) * 1963-05-01 1967-09-05 Honeywell Inc Control apparatus
US3296678A (en) * 1963-07-01 1967-01-10 Du Pont Method and apparatus for producing nonwoven webs
US3314122A (en) * 1963-07-01 1967-04-18 Du Pont Apparatus for forming non-woven web structures
US3321891A (en) * 1964-07-14 1967-05-30 Coanda Henri Apparatus for transporting atomizable material
DE1231484B (en) * 1964-09-26 1966-12-29 Gruenzweig & Hartmann Silencer for ground operation of jet engines
US3316657A (en) * 1965-10-23 1967-05-02 Huyck Corp Air deflector utilizing coanda effect
US3387647A (en) * 1966-08-15 1968-06-11 Heskestad Gunnar Air treating means including an air flow directing system
US3431009A (en) * 1967-01-06 1969-03-04 Western Electric Co Pickup device for supporting workpieces on a layer of fluid
US3639094A (en) * 1969-01-30 1972-02-01 Gerard Pierre Marie Joseph Dup Space-heating burner
US3686951A (en) * 1970-09-02 1972-08-29 Honeywell Inc Digital absolute pressure ratio indicator
DE2222453A1 (en) * 1972-05-08 1973-11-22 Ltg Lufttechnische Gmbh air outlet
US3853695A (en) * 1972-10-12 1974-12-10 S Back Entraining a liquid into a fiber slurry to accelerate it prior to discharge from a flow path onto a forming wire
US3909037A (en) * 1974-05-22 1975-09-30 Olin Corp Safety device with coanda effect
US4018483A (en) * 1974-09-18 1977-04-19 Smith D Kermit Process and apparatus for dislodging and conveying material from a surface with a positive pressure fluid stream
US4146357A (en) * 1975-07-30 1979-03-27 Hotwork International Limited Fuel fired burners
US4024790A (en) * 1975-10-31 1977-05-24 The United States Of America As Represented By The Secretary Of The Army Bore gas evacuation device for cannons and guns
US4557637A (en) * 1978-09-13 1985-12-10 The British Petroleum Company Limited Solids transfer system
US4252512A (en) * 1978-11-24 1981-02-24 Kornylak Corporation Coanda effect support for material processing
WO1980002197A1 (en) * 1979-03-29 1980-10-16 Sybron Corp Improved gas flow and gas sampling devices
EP0017437A1 (en) * 1979-03-29 1980-10-15 Sybron Corporation Gas flow and sampling devices and gas monitoring system
US4334340A (en) * 1980-01-25 1982-06-15 Crown Zellerbach Corporation System and method for dispersing filaments
WO1981002172A1 (en) * 1980-01-25 1981-08-06 I Reba System and method for dispersing filaments
US4369549A (en) * 1980-05-16 1983-01-25 Badische Corporation Blending method using a roving disintegrator-dispenser
US4374789A (en) * 1981-09-08 1983-02-22 Teledyne Industries, Inc. Metallic particle generation device
US4405296A (en) * 1981-09-08 1983-09-20 Teledyne Industries, Inc. Metallic particle generation device
US4472886A (en) * 1982-01-25 1984-09-25 Crown Zellerbach Corporation System and method for venting cooling air from filaments
US4494422A (en) * 1982-09-16 1985-01-22 The United States Of America As Represented By The Secretary Of The Army Fluidic transmission controller
US4484710A (en) * 1983-03-11 1984-11-27 The United States Of America As Represented By The Secretary Of The Army Fire suppressant nozzle
US4698134A (en) * 1983-11-25 1987-10-06 Consolidated-Bathurst, Inc. Method for cleaning papermaking fabrics
US4718178A (en) * 1985-11-29 1988-01-12 Whipple Rodger E Gas nozzle assembly
US4809412A (en) * 1985-12-04 1989-03-07 E. I. Du Pont De Nemours And Company Apparatus for producing a novelty nub yarn
US5035110A (en) * 1985-12-04 1991-07-30 E. I. Du Pont De Nemours And Company Nub yarn
US4870728A (en) * 1987-05-05 1989-10-03 E. I. Du Pont De Nemours And Company Apparatus for creating air turbulence
US4921408A (en) * 1988-11-28 1990-05-01 Graco Inc. Non-icing quiet air-operated pump
US4963228A (en) * 1989-10-27 1990-10-16 J. M. Voith Gmbh Headbox having Coanda nozzle for mixing slurry therein
US5225018A (en) * 1989-11-08 1993-07-06 Fiberweb North America, Inc. Method and apparatus for providing uniformly distributed filaments from a spun filament bundle and spunbonded fabric obtained therefrom
US5662271A (en) * 1990-03-21 1997-09-02 Boehringer Ingelheim International Gmbh Atomizing devices and methods
US5497944A (en) * 1990-03-21 1996-03-12 Dmw (Technology) Limited Atomising devices and methods
US5402943A (en) * 1990-12-04 1995-04-04 Dmw (Technology) Limited Method of atomizing including inducing a secondary flow
US7481453B2 (en) 1991-07-09 2009-01-27 Automotive Technologies International, Inc. Inflator system
US5208448A (en) * 1992-04-03 1993-05-04 Esab Welding Products, Inc. Plasma torch nozzle with improved cooling gas flow
WO1995019289A1 (en) * 1994-01-13 1995-07-20 Bell Helicopter Textron Inc. Engine exhaust gas deflection system
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