EP0085583B1 - Procédé et appareil pour l'atomisation des liquides - Google Patents

Procédé et appareil pour l'atomisation des liquides Download PDF

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Publication number
EP0085583B1
EP0085583B1 EP83300921A EP83300921A EP0085583B1 EP 0085583 B1 EP0085583 B1 EP 0085583B1 EP 83300921 A EP83300921 A EP 83300921A EP 83300921 A EP83300921 A EP 83300921A EP 0085583 B1 EP0085583 B1 EP 0085583B1
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EP
European Patent Office
Prior art keywords
liquid
throat
gas flow
throats
shock waves
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
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EP83300921A
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German (de)
English (en)
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EP0085583A3 (en
EP0085583A2 (fr
Inventor
Smith & Zickert Lee
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Lee Smith & Zickert
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Priority to EP83300921A priority Critical patent/EP0085583B1/fr
Priority to DE8383300921T priority patent/DE3378842D1/de
Priority to AT83300921T priority patent/ATE39747T1/de
Publication of EP0085583A2 publication Critical patent/EP0085583A2/fr
Publication of EP0085583A3 publication Critical patent/EP0085583A3/en
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Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
    • B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
    • B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
    • B05B17/0692—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/04—Deformable containers producing the flow, e.g. squeeze bottles
    • B05B11/042—Deformable containers producing the flow, e.g. squeeze bottles the spray being effected by a gas or vapour flow in the nozzle, spray head, outlet or dip tube
    • B05B11/043—Deformable containers producing the flow, e.g. squeeze bottles the spray being effected by a gas or vapour flow in the nozzle, spray head, outlet or dip tube designed for spraying a liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/34—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by ultrasonic means or other kinds of vibrations

Definitions

  • the invention relates to a method and apparatus for achieving atomization of a liquid according to the preamble of the claims 1 and 9.
  • Hand sprayers of pump or squeeze bottle type are in very common use for spraying liquids such as deodorants, hair spray, cologne, etc.
  • Typical hand sprayers produce droplets ranging in size from 0 to 250 microns in diameter. With the very low upstream input or back pressure available in typical hand sprayers 1.069 to 1.138 bars, it has not been possible heretofore to achieve droplet sizes in a very narrow size range no greater than 50 microns in diameter.
  • Hughes U.S. Patent No. 3,240,253 and Hughes U.S. Patent No. 3,240,254 which refer back to earlier Hughes Patents No. 3,230,923 and No. 3,230,924.
  • Hughes patents disclose the use of convergent-divergent nozzles to achieve supersonic airflow in conjunction with Hartmann generators to create sonic resonance into which streams of liquid are injected for atomization purposes.
  • the lowest mean droplet size achieved by Hughes was approximately 60 microns at substantial input air pressures, approximately 6.9 bars.
  • Hughes discloses that mean droplet size increases essentially geometrically with reduced input pressure, showing mean droplet size over 100 microns at an input pressure of approximately 1.36 bars. It is noted that since Hughes discloses mean droplet size, by definition, half of the droplets at any particular point on the Hughes curves would be of a larger size. Although most of the examples given by Hughes relate to atomization of fuel oil, it is noted that the droplet size achieved by Hughes is stated by him to be relatively independent of the viscosity (e.g., Hughes Patent No. 3,240,253, column 10, lines 9-20).
  • Hughes U.S. Patents No. 3,531,048, No. 3,542,291, No. 3,554,443 and No. 3,558,056 are disclosed in Hughes U.S. Patents No. 3,531,048, No. 3,542,291, No. 3,554,443 and No. 3,558,056.
  • Hughes assertedly obtains supersonic gas velocity through boundary layer "sculpting". According to Hughes, the build up and then the deterioration of the boundary layer in a straight-sided nozzle causes the gas stream to accelerate to supersonic, with the boundary layer forming what is akin to a convergent-divergent supersonic nozzle.
  • Hughes discloses that the liquid to be atomized is introduced into the gas stream prior to or at about the time of acceleration to sonic velocity.
  • Hughes Patent No. 3,354,443 Hughes also employs a Helmholtz resonator to reinforce the shock waves in the supersonic stream.
  • Joeck U.S. Patent No. 2,532,554 An earlier device for atomizing a liquid by supersonic sound vibrations is disclosed in Joeck U.S. Patent No. 2,532,554. Joeck talks in terms of "breaking up" a liquid stream into finely divided droplets by introducing the liquid into a high velocity gas stream, assertedly supersonic.
  • Cresswell US-Patent 3 741 484 a convergent-divergent air nozzle is known for shearing a liquid film flowing around a knife edge and for creating shock waves, which assist the afore mentioned shearing action in a non-confined space.
  • Bodai US-Patent 4316580 describes a fuel atomizer in which a fuel vortex-swirl is divided in a plurality of vortex-swirls by which channels acts as frequence-and amplitude amplifier. These channels resonate like organ pipes and produce intensic sonic disturbance agitating the interface between the liquid fuel and the air so that a thin film of liquid is thrown up, which rapidly dissipates into a fog of droplets.
  • the object of the invention resist in achieving a method and an apparatus for atomizing liquids in small droplets of less than 50 micron and uniform distribution.
  • Especially applicant obtains extremely small droplet sizes by creating shock waves in a high speed air flow in diverging passages (that is, passages of successively increasing cross-sectional areas) and causing these shock waves to impact against a wall surface to trigger sonic and/ or ultrasonic vibrations which are directed into a confined column or stream of liquid such as water.
  • the sonic and/or ultrasonic vibrations in the confined column of liquid cause it to fracture and to emerge as a fog-like flow comprised of droplets of extremely small size.
  • shock waves in the air flow are achieved even though the input air pressure is as low as 0.069 bars to 0.138 bars, and these shock waves occur in a passage between a composite inlet or upstream throat and a single outlet or downstream throat, with the effective cross-sectional flow area of the outlet throat being approximately one-third larger than the effective cross-sectional flow area of the composite inlet throat.
  • the shock wave and sonic and/or ultrasonic vibration phenomena which cause the liquid to fracture into a mist of extremely small droplets is approximately equally operative when the effective cross-sectional flow area of the downstream throat is in the range of from 1.25 to 1.5 times the effective cross-sectional flow area of the composite throat. From observation of models and from high speed photography, it has been determined that shock waves are indeed formed during operation even though the input pressure is so low as to indicate against the achievement of supersonic flow between the composite upstream throat and the downstream throat.
  • the resulting flow is ejected from the downstream throat as a fine spray at a substantial forward velocity in the form of droplets in a very narrow size range of 50 microns or less.
  • the atomizing apparatus of the present invention is generally designated by the reference numeral 20 in Figure 1.
  • the apparatus includes a deformable plastic container 22 which incorporates a spray apparatus designated as 24.
  • the container 22 is of the "squeeze bottle” type partly filled with a liquid to be sprayed, such as water, deodorant, hairspray, cologne or the like generally designated 26.
  • the remainder of the bottle is filled with air at atmospheric pressure.
  • pressure is created in the bottle causing the liquid to be ejected by the spray apparatus 24 in the form of a fine mist, the main body of which is designated by the reference numeral 28.
  • a few droplets 28a are carried 229 mm to 254 mm away from the main spray, as shown, by the force of exiting shock waves as described in more detail subsequently herein.
  • the spray apparatus 24 includes a spray plug 30 to which is connected a rigid liquid supply pipe 32 and which is in turn connected to a flexible dip tube 34, the bottom portion of which is immersed in the liquid 26.
  • a spray plug 30 to which is connected a rigid liquid supply pipe 32 and which is in turn connected to a flexible dip tube 34, the bottom portion of which is immersed in the liquid 26.
  • the dip tube has an enlarged upper end portion 36 in which the lower end portion of the supply pipe 32 is inserted and secured in liquid-tight fashion.
  • a ball check valve is located within the tube enlargement 36 and comprises a ball member 38 normally seated against an annular valve seat 40.
  • the ball 38 normally is urged in fluid-tight fashion against the seat 40 by means of gravity and a light compression spring 42 which is compressed between the ball member 38 and the lower end of the liquid supply pipe 32.
  • the spray plug 30 is similar in general external configuration to the discharge nozzle device shown and described in applicant's above mentioned patent No. 3,316,559.
  • the plug 30 is preferably molded of semi-rigid plastic such as polyethylene or polypropylene, but it may be formed of metal or some other rigid material if desired.
  • the plug includes a cylindrical outer annular portion 44, a dome portion 46 and a cylindrical inner annular sleeve portion 48, all integral.
  • the outer cylindrical portion 44 is adapted for being secured in the upper end portion of the squeeze bottle 22, as shown in Figure 1.
  • the present invention resides in the configuration and coaction of the cooperating portions of the spray plug 30 and the liquid supply pipe 32.
  • the arrangement provides air passages which when the bottle 22 is squeezed, coact to achieve acceleration of air flow sufficient to create shock waves which are impinged against a wall surface to create sonic and/or ultrasonic vibrations which are reflected into the confined liquid flow before it emerges from the supply pipe 32, causing fracturing of the confined liquid into extremely fine droplets of a narrow size range.
  • the upper end portion of the liquid supply pipe 32 is snugly held in a central cylindrical cavity 50 of the sleeve portion 48.
  • Six longitudinal grooves 52 are formed in the inner wall of the cavity 50 and are equally spaced around the periphery. The grooves 52 are slightly tapered inwardly from their bottom ends towards the top. With the pipe 32 secured within the cavity 50 as shown, the grooves 52 provide six air flow passages which are circumferentially spaced about the outer periphery of the pipe.
  • a central liquid flow passage 54 is formed within the pipe 32, terminating at an opening at an upper end surface 55 of the pipe.
  • the outer surface of the upper end portion of the liquid supply pipe 32 is scarfed or chamfered, with two angularly disposed flat chamfers 56 formed at each side. Consequently, the outer periphery of the end portion of the pipe is generally diamond shaped in cross-section as best seen in Figures 5 and 12, and the diamond shape gradually fairs into the round cross-sectional configuration of the outer surface of the pipe below the chamfers 56.
  • the arrangement is such as to form three air flow passages on each side of the pipe 32, the center one of each group of three being the main or primary passage generally designated by the reference numeral 58, and the two flanking passages of each group being side or auxiliary passages generally designated by the reference numeral 60.
  • the air flow passages 58 and 60 are of a convergent-divergent form.
  • the passages 52 are slightly flared toward their bottom ends, so that the passages 58 and 60 formed by grooves 52 and the circumferential surface of the liquid supply pipe 32 are slightly convergent in the direction of air flow until the chamfers 56 are encountered.
  • the narrowest constriction in each passage is reached.
  • in each of the primary passages 58 the point of narrowest constriction constitutes a throat 58t (at the phantom line shown), and in each of the auxiliary passages 60 the point of narrowest constriction constitutes a throat 60t (at the phantom lines shown).
  • the portions of the primary and secondary passages upstream of the throats 58t and 60t are designated 58a and 60a, respectively, and the common diverging passaging downstream of the throats is designated 61. Accordingly, the air flow passages 58 and 60 are constructed in convergent-divergent nozzle form, with the convergent section being the portion upstream of the respective throats 58t and 60t and the divergent section being the common diverging passage 61.
  • the grooves 52 are 0.33 mm deep.
  • the grooves 52 defining the primary air flow passages 58 encounter the scarfed surfaces 56 at a point where the width of the grooves 52 is 0.81 mm.
  • the auxiliary passages 60 do not reach the scarfed surfaces 56 until farther downstream, so that because of the taper in the grooves 52 the width at that point is approximately 0.64 mm.
  • each of the throats 58t of the primary air flow passages 58 is 0.33 mm by 0.81 mm in dimension
  • each auxiliary air flow passages 60 has a slightly smaller throat 60t of 0.33 mm by 0.64 mm in dimension. Downstream of the throats 58t and 60t the air passages open into the common diverging passage 61 defined by the scarfed surfaces 56.
  • the cavity 50 in the sleeve portion 48 terminates at an end wall 62.
  • a ramp 64 is formed in the central portion of the end wall and extends angularly upwardly from right to left as seen in Figures 4, 9, and 11.
  • Parallel side walls 66 join the ramp 64 to define a ramped channel 67 leading to an exit orifice 68 exiting to the atmosphere.
  • the exit orifice 68 is formed in an exterior surface 69 of a depressed region of the dome portion 46, with the surface disposed at about a 45° angle to the central axis of the spray plug.
  • the outside diameter of the liquid supply pipe 32 below the scarfed surfaces 56 is 2.9 mm while the diameter of the liquid passage 54 is 1.07 mm.
  • the liquid supply pipe 32 is secured in the cavity with its end surface 55 spaced 0.38 mm to 0.51 mm) from the end wall 62 of the cavity.
  • the exit orifice 68 is provided with relatively sharp or feather edges 68a and 68b, top and bottom, respectively. It has been determined experimentally that at least two of the edges of the orifice 68 must be relatively sharp or else the spray which is ejected becomes much poorer, that is, droplet size becomes substantially larger than the desired 50 microns maximum. It has been determined experimentally that a rectangular orifice with all four edges no greater than 0.64 mm in thickness in the flow direction will work satisfactorily, but if the edge thickness is increased to 1:02 mm or over, the spray becomes unsatisfactory.
  • the exit orifice edge if relatively thick, impedes or prevents the reflected shock waves from passing out the exit orifice.
  • a relatively thick orifice may serve to reduce the mass flow through the exit which in turn decreases the velocity between the two throats.
  • the exit orifice 68 is of rectangular configuration 1.02 mm wide (the same as the distance between the side walls 66) and 0.91 mm deep (the distance between the sharp edges 68a and 68b).
  • the ramped channel 67 leading to the exit orifice 68 is open at its bottom. Accordingly, the combined cross-sectional open area of the ramped channel 67 and the connected space below the end wall 62 and above the end surface 55 of the liquid supply pipe 32 is considerably larger than the cross-sectional area of the exit orifice 68, particularly as the exit orifice is approached.
  • the dimensions and configurations of the liquid supply pipe 32, the scarfed surfaces 56 of the liquid supply pipe, the spacing of the upper end of the liquid supply pipe from the end wall 62 of the cavity 50, the width and depth of the grooves 52, the continuous length of the grooves 52 throughout the cavity 50, and the size of the exit orifice 68 are deliberately chosen to create the effect of two throats in series in the air flow system from the interior of the squeeze bottle 22 to the atmosphere.
  • the six throats 58t and 60t comprise a composite upstream throat, while the exit orifice 68 forms a single downstream throat.
  • each of the upstream throats 58t is 0.268 mm 2 while the physical cross-sectional area of each of the upstream throats 60t is 0.210 mm 2 , for a total of 1.376 mm 2 for the composite upstream throat.
  • the physical cross-sectional area of the downstream orifice or throat 68 is 0.929 mm 2 .
  • the effective cross-sectional flow area of the downstream throat is larger than the effective cross-sectional flow area of the composite upstream throat. This is because of the configuration and size of the long tapered inlet passages 52 and the fact that the composite upstream throat is made up of six throats 58t and 60t of small cross-sectional area, whereas the downstream throat comprises a single orifice 68. Because of the length of the inlet passages 58 and 60, the four wall surfaces forming each passage and the small cross-sectional area of each, there.is substantial boundary layer buildup in each passage. In contrast, there is comparatively little boundary layer build-up at the single downstream orifice 68, particularly because of the sharp edges 68a and 68b.
  • the ratio of the effective cross-sectional flow area of the downstream throat to the effective flow area of the composite upstream throat is approximately 1.33 to 1 for optimum operation.
  • a water flow test is employed to determine experimentally the actual flow per unit time through the downstream throat 68 as compared with the actual flow per unit time through the composite upstream throat 58t and 60t.
  • flow of a measured amount of water through the composite upstream throat is timed.
  • the pipe 32 is removed, and the flow of the same measured amount of water through the downstream throat 68 is timed.
  • the comparative flow per unit time so determined defines the effective cross-sectional flow area ratio according to the concepts of the invention. It has been determined that the effective cross-sectional flow area ratio can vary between 1.5 and 1.25 and still achieve the uniform range of extremely small droplet sizes according to the invention.
  • the configuration and location of parts is such that the space between the upper end 55 of the liquid supply pipe 32 and the end wall 62 is considerably greater in effective cross-sectional flow area than the effective cross-sectional flow area of the exit orifice 68. Accordingly, the flow is in no way restricted between the composite upstream throat 58t and 60t and the downstream throat 68.
  • squeezing of the squeeze bottle 22 creates an internal pressure of 1 to 2 psig which causes liquid to flow upwardly in the passage 54 and causes air to flow upwardly into the grooves 52 comprising the initial portions of the air flow passages 58 and 60.
  • the speed of the flow rapidly accelerates, apparently to supersonic speed. Acceleration to supersonic speed is concluded because shock waves form in the divergent portions 61 of the passage before the air flow reaches the upper end of the liquid pipe 32.
  • the shock waves which form in the diverging passage 61 are schematically illustrated in Figures 9, 10 and 11.
  • the shock waves when formed travel at several times the speed of sound.
  • Some shock waves initially strike the ramp 64 and then are reflected to the opposed upper end surface 55 of the liquid supply pipe 32, such as the shock waves 70, 72, 74 and 76 schematically illustrated in Figures 9, 10 and 11.
  • Some reflected shock waves, not illustrated, strike the side walls 66 of the ramped passage 67.
  • other shock waves may first strike the end wall 62 of the cavity 50 and then be reflected against the end surface 55 of the liquid supply pipe from which they are again reflected upwardly to strike the ramp surface 64.
  • Applicant has found that providing a primary air flow as in the air flow passages 58 along with at least one secondary air flow as in the passages 60 is advantageous.
  • the air flow in the primary passage 58 passes the throat 58t it tends to fan outwardly as depicted, and the same occurs with respect to the air flow through the auxiliary passages 60 as they pass the throats 60t.
  • the secondary air flow appears to assist in accelerating the primary flow through entrainment, and in addition it is believed that the secondary flow provides energy to the boundary layer to reduce the flow-impeding effect of boundary layer growth.

Claims (19)

1. Procédé d'atomisation d'un liquide dans lequel
a) un courant d'un liquide est transmis à un espace confiné vers une sortie,
b) des vibrations sonores sont créées dans un espace qui se trouve à l'extérieur de l'espace confiné, et
c) ces vibrations sonores sont dirigées vers le courant confiné de liquide placé dans l'espace confiné, ce courant confiné de liquide quittant l'espace confiné afin que le liquide se rompe en petites gouttelettes de dimension relativement uniforme.
2. Procédé selon la revendication 1, caractérisé en ce que les vibrations sonores sont créées par des ondes de choc.
3. Procédé selon la revendication 1, dans lequel
a) des ondes de choc (70, 72, 74, 76) sont créées dans un courant de gaz, et
b) ces ondes de choc viennent frapper une surface (64) afin qu'elles créent les vibrations sonores.
4. Procédé selon l'une des revendications à 3, dans lequel une tension est créée dans le courant confiné de liquide.
5. Procédé d'atomisation d'un liquide selon la revendication 1, comprenant les étapes suivantes:
a) la création d'ondes de choc (72, 74, 76, 78) dans un courant de gaz injecté par une première gorge (58t; 60t) dans un passage (61), et
b) l'utilisation des ondes de choc (72, 74, 76, 78) pour la création de vibrations sonores dans une colonne émergeante de liquide afin que le liquide soit brisé en petites gouttelettes.
6. Procédé selon la revendication 5, comprenant l'étape d'éjection du courant de gaz et des gouttelettes de liquide hors d'une seconde gorge (68) placée en série avec la première gorge (58t; 60t) et en aval de celle-ci.
7. Procédé selon la revendication 5, comprenant l'injection d'un courant gazeux supplémentaire dans ledit passage (61) par une gorge (60t) parallèle à la première gorge (58t) afin que l'accélération du premier courant de gaz soit accrue et que de l'énergie soit fournie à la couche limite du premier courant de gaz.
8. Procédé selon la revendication 5, dans lequel les ondes de choc (72, 74, 76, 78) sont créées par accélération du courant de gaz dans un passage divergent (61).
9. Appareil d'atomisation de liquide, comprenant
a) un espace confiné (54) destiné à la transmission d'un liquide à une sortie (68),
b) un espace (67) placé en dehors de l'espace confiné (54),
c) un dispositif destiné à créer des vibrations sonores (82) dans ledit espace (67), et
d) un dispositif (64) placé dans ledit espace (67) et destiné à diriger les vibrations sonores (82) vers l'espace confiné (54) à l'endroit où ce courant confiné de liquide quitte l'espace confiné afin que le liquide soit brisé en petites gouttelettes de dimension relativement uniforme.
10. Appareil d'atomisation de liquide selon la revendication 9, dans lequel le dispositif créant des vibrations sonores comporte:
a) un courant de gaz, et
b) un dispositif destiné à créer des ondes de choc dans le courant de gaz (58t, 60t, 61; 68).
11. Appareil d'atomisation de liquide selon la revendication 10, comprenant une surface (64) que viennent frapper les ondes de choc afin que les vibrations sonores soient créées.
12. Appareil d'atomisation de liquide selon la revendication 9, dans lequel la dimension des gouttelettes est comprise dans une plage de diamètres inférieures à 50 um.
13. Appareil d'atomisation de liquide selon la revendication 9 ou 10, dans lequel le dispositif de création d'ondes de choc comporte deux gorges placées en série (58t et 60t; 68) et destinées à accélérer le courant de gaz à une vitesse suffisante pour que les ondes de choc soient créées entre les deux gorges.
14. Appareil d'atomisation de liquide selon la revendication 13, dans lequel les deux gorges comprennent une gorge amont (58t et 60t) et une gorge aval (68), la section efficace de la gorge aval étant comprise entré 1,25 et 1,5 fois la section efficace de la gorge amont.
15. Appareil d'atomisation de liquide selon la revendication 14, dans lequel la gorge aval (68) a des bords relativement nets comparés à la gorge amont (58t, 60t).
16. Appareil d'atomisation de liquide selon la revendication 14, dans lequel le dispositif destiné à accélérater le courant de gaz comprend un courant auxiliaire de gaz qui est injecté de façon générale dans la direction d'écoulement du premier courant cité de gaz afin que de l'énergie soit fournie à la couche limite du premier courant et que l'accélération du premier courant soit accrue par entraînement.
17. Appareil d'atomisation de liquide selon les revendications 14 et 15, dans lequel le dispositif d'accélération du courant de gaz comprend une tuyère à convergent-divergent (58 comprenant 58a et 61; 60 comprenant 60a et 61), celle des deux gorges (58t; 60t) qui est en amont étant placée entre les parties convergent et du divergent de la tuyère (58t entre 58a et 61; 60t entre 60a et 61).
18. Appareil d'atomisation de liquide selon la revendication 15, dans lequel celle des deux gorges (58t et 60t) qui est en amont est une gorge composite comprenant deux gorges en parallèle (58t, 60t) formant chacune un courant de gaz, les deux courants de gaz se combinant en aval des gorges placées en parallèle et les courants combinés circulant alors dans celle des deux gorges (68) qui est en aval avec les gouttelettes de liquide.
19. Appareil d'atomisation de liquide selon la revendication 18, dans lequel l'une des deux gorges parallèles (60t) injecte un courant de gaz en aval du courant injecté par l'autre des gorges parallèles (58t) afin que de l'énergie soit fournie à la couche limite du courant de gaz provenant de l'autre des gorges parallèles (58t) et afin que l'autre courant soit accéléré par entraînement.
EP83300921A 1983-02-22 1983-02-22 Procédé et appareil pour l'atomisation des liquides Expired EP0085583B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP83300921A EP0085583B1 (fr) 1983-02-22 1983-02-22 Procédé et appareil pour l'atomisation des liquides
DE8383300921T DE3378842D1 (en) 1983-02-22 1983-02-22 Liquid atomizing method and apparatus
AT83300921T ATE39747T1 (de) 1983-02-22 1983-02-22 Verfahren und vorrichtung zum feinzerstaeuben von fluessigkeiten.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83300921A EP0085583B1 (fr) 1983-02-22 1983-02-22 Procédé et appareil pour l'atomisation des liquides

Publications (3)

Publication Number Publication Date
EP0085583A2 EP0085583A2 (fr) 1983-08-10
EP0085583A3 EP0085583A3 (en) 1983-09-14
EP0085583B1 true EP0085583B1 (fr) 1989-01-04

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EP83300921A Expired EP0085583B1 (fr) 1983-02-22 1983-02-22 Procédé et appareil pour l'atomisation des liquides

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EP (1) EP0085583B1 (fr)
AT (1) ATE39747T1 (fr)
DE (1) DE3378842D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1059361C (zh) * 1993-02-09 2000-12-13 埃尔赫南·塔沃尔 雾化器
IL106616A (en) * 1993-08-08 1997-06-10 Elhanan Tavor Atomizer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240253A (en) * 1963-02-25 1966-03-15 Sonic Dev Corp Sonic pressure wave atomizing apparatus and methods
BE657350A (fr) * 1963-12-23
US3741484A (en) * 1970-09-30 1973-06-26 Decafix Ltd Atomisers
US4084934A (en) * 1972-02-05 1978-04-18 Mitsubishi Precision Co., Ltd. Combustion apparatus
US4316580A (en) * 1979-07-13 1982-02-23 Sontek Industries, Inc. Apparatus for fragmenting fluid fuel to enhance exothermic reactions

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Publication number Publication date
EP0085583A3 (en) 1983-09-14
DE3378842D1 (en) 1989-02-09
ATE39747T1 (de) 1989-01-15
EP0085583A2 (fr) 1983-08-10

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