US3081946A - Sonic spray nozzle - Google Patents

Sonic spray nozzle Download PDF

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Publication number
US3081946A
US3081946A US210299A US21029962A US3081946A US 3081946 A US3081946 A US 3081946A US 210299 A US210299 A US 210299A US 21029962 A US21029962 A US 21029962A US 3081946 A US3081946 A US 3081946A
Authority
US
United States
Prior art keywords
nozzle
sonic
resonator
liquid
spray
Prior art date
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 - Lifetime
Application number
US210299A
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English (en)
Inventor
Robert S Soloff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Astrosonics Inc
Original Assignee
Astrosonics Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Astrosonics Inc filed Critical Astrosonics Inc
Priority to US210299A priority Critical patent/US3081946A/en
Application granted granted Critical
Publication of US3081946A publication Critical patent/US3081946A/en
Priority to DE19631400706 priority patent/DE1400706B2/de
Priority to GB24684/63A priority patent/GB1010230A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • F23D11/10—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying being induced by a gaseous medium, e.g. water vapour
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S159/00—Concentrating evaporators
    • Y10S159/04—Foam
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S159/00—Concentrating evaporators
    • Y10S159/90—Concentrating evaporators using vibratory force

Definitions

  • the operating frequency may vary over a rather wide range of frequency if there is variation in the pressure of gas supplied to the resonator.
  • atypical sonic transducer device utilizing an inlet pressure varying from 35 to 50 p.s.i. will have an operating frequency of 7600 to 94.0 0 c.p.s. It will be appreciated therefore that the configuration of the nozzle and the resonator cavity must be such that sonic waves are generated over a rather wide fluctuation of pressure to permit of continuous reliable operation of the device.
  • the device disclosed in the aforesaid Patent No. 2,519,619 is an example of a suitable acoustic generator.
  • a very powerful sonic jet can be emitted from a small nozzle.
  • the liquid feed system of the device .of this invention is made concentric with this nozzle, providing a device of minimal dimensions.
  • the device of the present invention can readily be constructed so as to have a total length of but three inches. Despite its small size, the device of this invention will have the output .Capacity of typical prior art spray nozzles of far larger dimensions and which,
  • liquid is fed into a sonic energy. beam at a point downstream from the resonator thus minimizing the likelihood of cons tamination of the resonator and nozzle by liquid.
  • Still a further object of the present invention is to provide a precision spray nozzle device adapted to operate over a relatively wide range of air and liquid pressures.
  • a particular object is to provide a sonic spray nozzle having liquid feed means located below the resonator.
  • Another object is to provide an apparatus for forming a mioromist wherein the particles remain in suspension without wetting.
  • FIG. 1 is a longitudinal view, partly in section, of the device of the present invention.
  • FIG. 2 is a transverse cross-section of the'present invention taken along line 22 of FIG. 1.
  • FIGS. 3 and 4 illustrate schematically two typical discharge patterns obtainable with the device of the present invention.
  • the device of the present invention characterized generally by the numeral 10 comprises an external housing 12 having a cylindrical bore 14, an externally threaded end portion 16 adapted to serve as an air inlet and an opposed internally threaded end portion 18.
  • an internally threaded liquid inlet port 20 Integral-1y formed on the outside surface of housing 12 and conventionally at right angles to same is an internally threaded liquid inlet port 20 having a bore 22:.
  • a conventional coupling 30 for connection, in turn, to a gaseous fluid pressure source.
  • a sleeve 32 Rigidly attached at end portion 18,-a1so by mating threads, is a sleeve 32 having an inwardly converging or tapered inner diameter 34 and a tapered or beveled bottom surface 35.
  • sleeve 32 extends somewhat beyond end 18 of housing 12 with the inner diameter smallest at its exposed end.
  • Sleeve 32 together with other components, to be described in detail hereinafter, form the nozzle of the invention.
  • a hollow stem 48 Concentrically secured within bore 42 of spider 40 as by mating threads, is a hollow stem 48 comprising a substantially straight outer diameter portion 50 and a full length, longitudinal central bore 52. Outer diameter 50, in conjunction with and enveloped by tapered inner diameter 34, form a plenum chamber 54 in which the velocity of the gaseous/driving medium is increased.
  • resonator 70 At its end opposite liquid inlet port 29, external threads are formed on hollow stem 48 for the purpose of mounting an end cap 76. End cap 76 seals off central bore 52 of plug 4%. Either at assembly, or at some stage prior thereto, radial apertures 78 are formed in both cavity resonator 70 and end 47 of plug 43 and communicate with central bore 52 of plug 48. The apertures 78 serve as orifices for the liquid being discharged into the sound field.
  • the internal configuration of resonator 70 comprises a substantially cylindrical side wall 72 concentric with and spaced from end portion 47 of plug 48. Wall 72 terminates in a shoulder 74 closely fitted about end 47 of plug 48.
  • air under pressure introduced into bore 14, is emitted as a DC. supersonic jet stream from choked nozzle 60 and converted into sonic Waves of compression and rarefaction by cavity resonator 70. It is preferred to operate the apparatus at inaudible ultrasonic frequencies.
  • end portion 18 of sleeve 32 is provided with beveled edge 35 which offers a deflecting surface to high velocity sonic waves generated by cavity resonator 70.
  • the configuration of surface 35 is such that a low pressure area is formed adjoining openings 78 by the air jet discharging radially from the resonator. This low pressure draws liquid emerging from openings 78 into the downwardly reflected sound field.
  • the high in tensity sonic wave action of alternate pressure and rarefaction operating on the air molecules causes turbulence within this field resulting in atomization of the liquid into a micromist. It will be appreciated that this atomization has been effected by a device of minimal dimensions compared with conventional spray nozzles. In the embodiment illustrated in FIG 1, the length of the device is approximately three inches, disregarding the terminal portion 30, which is threadedly engaged to the device and separable therefrom.
  • the device is adapted to withstand relatively high input pressures of air and liquid and is adapted to convert the liquid into an aerosol characterized by a very high degree of uniformity of size of the particles.
  • the aforesaid Yellott-Savory sonic generator is employed, wherein adjustable spacing means are provided for dis placing the cavity resonator relative to the nozzle over a relatively narrow operational range.
  • adjustable spacing means are provided for dis placing the cavity resonator relative to the nozzle over a relatively narrow operational range.
  • angle a here shown as approximately 180" represents a spacing of resonator to nozzle within the operational range, which will result in maximum acoustic output and maximum area of diffusion of the micromist.
  • FIG. 4 illustrates a small directional cone, of angle a, for forward fogging.
  • This mode of operation would, for example, be employed for spraying material in a conveyor belt.
  • the micromist is concentrated towards a specific area.
  • the spacing between nozzle and resonator is increased beyond that position providing maximum acoustic output.
  • Typical performance obtained from a unit by 4%" long and 1%" diameter is as follows:
  • Particle size Sub-micron to 15 microns.
  • the resulting droplets were under 10 microns.
  • a sonic spray device comprising:
  • a sonic generator comprising a hollow body member terminating in a choked nozzle
  • a hollow stem having an axial bore positioned partially within said body and having a portion extending through said nozzle;
  • a resonator cup supported by said extending stem portion in spaced opposition to said nozzle;

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Special Spraying Apparatus (AREA)
  • Nozzles (AREA)
US210299A 1962-07-09 1962-07-09 Sonic spray nozzle Expired - Lifetime US3081946A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US210299A US3081946A (en) 1962-07-09 1962-07-09 Sonic spray nozzle
DE19631400706 DE1400706B2 (de) 1962-07-09 1963-06-20 Vorrichtung zum verspruehen von fluessigkeiten mittels schallenergie
GB24684/63A GB1010230A (en) 1962-07-09 1963-06-21 Sonic spray nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US210299A US3081946A (en) 1962-07-09 1962-07-09 Sonic spray nozzle

Publications (1)

Publication Number Publication Date
US3081946A true US3081946A (en) 1963-03-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US210299A Expired - Lifetime US3081946A (en) 1962-07-09 1962-07-09 Sonic spray nozzle

Country Status (3)

Country Link
US (1) US3081946A (de)
DE (1) DE1400706B2 (de)
GB (1) GB1010230A (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157359A (en) * 1962-12-24 1964-11-17 Astrosonics Inc Large volume liquid atomizer employing an acoustic generator
US3240253A (en) * 1963-02-25 1966-03-15 Sonic Dev Corp Sonic pressure wave atomizing apparatus and methods
US3262468A (en) * 1963-12-05 1966-07-26 Bowles Eng Corp Fluid catcher mechanism
US3297255A (en) * 1965-04-19 1967-01-10 Astrosonics Inc Reverse flow acoustic generator spray nozzle
US3373752A (en) * 1962-11-13 1968-03-19 Inoue Kiyoshi Method for the ultrasonic cleaning of surfaces
US3515093A (en) * 1967-05-10 1970-06-02 Electronic Eng Co California Pressure wave generator
US3643623A (en) * 1967-08-30 1972-02-22 Lin Eng Corp Method of and apparatus for purifying polluted gases
US3645504A (en) * 1968-11-22 1972-02-29 Branson Instr Sonic dispersing apparatus
US3763634A (en) * 1966-11-16 1973-10-09 H Alliger Air pollution abatement apparatus
US5294298A (en) * 1991-06-10 1994-03-15 Ohkawara Kakohki Co., Ltd. Spray-drying granulation apparatus
US5835677A (en) * 1996-10-03 1998-11-10 Emcore Corporation Liquid vaporizer system and method
US5835678A (en) * 1996-10-03 1998-11-10 Emcore Corporation Liquid vaporizer system and method
US20100331428A1 (en) * 2007-11-07 2010-12-30 Aridis Pharmaceuticals Sonic Low Pressure Spray Drying
CN105201697A (zh) * 2015-11-12 2015-12-30 厦门大学 频率可调气动式超声波雾化装置
US10960370B2 (en) 2017-06-07 2021-03-30 Omni International, Inc. Ultrasonic homogenization device with closed-loop amplitude control
CN113982784A (zh) * 2021-10-28 2022-01-28 中国人民解放军战略支援部队航天工程大学 一种具有声扰动的气体中心式气液同轴透明喷嘴喷注面板

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3735787A1 (de) * 1987-09-22 1989-03-30 Stiftung Inst Fuer Werkstoffte Verfahren und vorrichtung zum zerstaeuben mindestens eines strahls eines fluessigen stoffs, vorzugsweise geschmolzenen metalls

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1939302A (en) * 1929-04-12 1933-12-12 Edward B Benjamin Apparatus for and art of carburation
US2481620A (en) * 1945-02-08 1949-09-13 Skiatron Corp Device for dispensing liquid fuel into combustion air of furnaces
US2519619A (en) * 1944-08-04 1950-08-22 Inst Gas Technology Acoustic generator
US2908443A (en) * 1949-06-07 1959-10-13 Fruengel Frank Ultrasonic carburetor
US2944029A (en) * 1957-09-16 1960-07-05 Aeroprojects Inc Aerosolization process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1939302A (en) * 1929-04-12 1933-12-12 Edward B Benjamin Apparatus for and art of carburation
US2519619A (en) * 1944-08-04 1950-08-22 Inst Gas Technology Acoustic generator
US2481620A (en) * 1945-02-08 1949-09-13 Skiatron Corp Device for dispensing liquid fuel into combustion air of furnaces
US2908443A (en) * 1949-06-07 1959-10-13 Fruengel Frank Ultrasonic carburetor
US2944029A (en) * 1957-09-16 1960-07-05 Aeroprojects Inc Aerosolization process

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373752A (en) * 1962-11-13 1968-03-19 Inoue Kiyoshi Method for the ultrasonic cleaning of surfaces
US3157359A (en) * 1962-12-24 1964-11-17 Astrosonics Inc Large volume liquid atomizer employing an acoustic generator
US3240253A (en) * 1963-02-25 1966-03-15 Sonic Dev Corp Sonic pressure wave atomizing apparatus and methods
US3262468A (en) * 1963-12-05 1966-07-26 Bowles Eng Corp Fluid catcher mechanism
US3297255A (en) * 1965-04-19 1967-01-10 Astrosonics Inc Reverse flow acoustic generator spray nozzle
US3763634A (en) * 1966-11-16 1973-10-09 H Alliger Air pollution abatement apparatus
US3515093A (en) * 1967-05-10 1970-06-02 Electronic Eng Co California Pressure wave generator
US3643623A (en) * 1967-08-30 1972-02-22 Lin Eng Corp Method of and apparatus for purifying polluted gases
US3645504A (en) * 1968-11-22 1972-02-29 Branson Instr Sonic dispersing apparatus
US5294298A (en) * 1991-06-10 1994-03-15 Ohkawara Kakohki Co., Ltd. Spray-drying granulation apparatus
US5835677A (en) * 1996-10-03 1998-11-10 Emcore Corporation Liquid vaporizer system and method
US5835678A (en) * 1996-10-03 1998-11-10 Emcore Corporation Liquid vaporizer system and method
US20100331428A1 (en) * 2007-11-07 2010-12-30 Aridis Pharmaceuticals Sonic Low Pressure Spray Drying
US8268354B2 (en) 2007-11-07 2012-09-18 Aridis Pharmaceuticals Sonic low pressure spray drying
US8673357B2 (en) 2007-11-07 2014-03-18 Aridis Pharmaceuticals Sonic low pressure spray drying
CN105201697A (zh) * 2015-11-12 2015-12-30 厦门大学 频率可调气动式超声波雾化装置
CN105201697B (zh) * 2015-11-12 2018-06-01 厦门大学 频率可调气动式超声波雾化装置
US10960370B2 (en) 2017-06-07 2021-03-30 Omni International, Inc. Ultrasonic homogenization device with closed-loop amplitude control
CN113982784A (zh) * 2021-10-28 2022-01-28 中国人民解放军战略支援部队航天工程大学 一种具有声扰动的气体中心式气液同轴透明喷嘴喷注面板
CN113982784B (zh) * 2021-10-28 2023-05-30 中国人民解放军战略支援部队航天工程大学 一种具有声扰动的气体中心式气液同轴透明喷嘴喷注面板

Also Published As

Publication number Publication date
DE1400706A1 (de) 1969-01-30
GB1010230A (en) 1965-11-17
DE1400706B2 (de) 1971-04-15

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