EP0202100A1 - Schwingungsglied für Ultraschallzerstäubung - Google Patents

Schwingungsglied für Ultraschallzerstäubung Download PDF

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Publication number
EP0202100A1
EP0202100A1 EP86303613A EP86303613A EP0202100A1 EP 0202100 A1 EP0202100 A1 EP 0202100A1 EP 86303613 A EP86303613 A EP 86303613A EP 86303613 A EP86303613 A EP 86303613A EP 0202100 A1 EP0202100 A1 EP 0202100A1
Authority
EP
European Patent Office
Prior art keywords
liquid
vibrating element
ultrasonic
atomization
fuel
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.)
Withdrawn
Application number
EP86303613A
Other languages
English (en)
French (fr)
Inventor
Kakuro Kokubo
Masami Endo
Hideo Hirabayashi
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.)
Tonen General Sekiyu KK
Original Assignee
Toa Nenryo Kogyyo KK
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 Toa Nenryo Kogyyo KK filed Critical Toa Nenryo Kogyyo KK
Publication of EP0202100A1 publication Critical patent/EP0202100A1/de
Withdrawn legal-status Critical Current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
    • B05B17/0607—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 electrical means, e.g. piezoelectric transducers
    • B05B17/0623—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 electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
    • B05B17/063—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 electrical means, e.g. piezoelectric transducers coupled with a vibrating horn having an internal channel for supplying the liquid or other fluent material
    • 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
    • B05B17/0607—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 electrical means, e.g. piezoelectric transducers
    • B05B17/0623—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 electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M27/00—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like
    • F02M27/08—Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sound waves, or the like by sonic or ultrasonic waves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/041—Injectors peculiar thereto having vibrating means for atomizing the fuel, e.g. with sonic or ultrasonic vibrations
    • 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
    • F23D11/345—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by ultrasonic means or other kinds of vibrations with vibrating atomiser surfaces

Definitions

  • This invention relates generally to an ultrasonic atomizing apparatus such as an ultrasonic injection nozzle, and particularly to a vibrating element suitable for use on an ultrasonic atomizing apparatus for atomizing liquid intermittently or continuously, such atomizing apparatus including (1) automobile fuel injection apparatus such as electronically controlled gasoline injection valves or electronically controlled diesel fuel injection valves, (2) fuel nozzles for use with a gas turbine, (3) burners for use with industrial, commercial and domestic boilers, heating furnaces and stoves, (4) industrial liquid atomizers, drying atomizers for drying liquid materials such as foods, medicines, agricultural chemicals, fertilizers and the like, and spray heads for controlling temperature and humidity, atomizers for calcining powders (pelletizing ceramics), spray coaters, and reaction promoting devices, and (5) liquid atomizers for uses other than industrial use, such as spreaders for agricultural chemicals and antiseptic solution.
  • automobile fuel injection apparatus such as electronically controlled gasoline injection valves or electronically controlled diesel fuel injection valves
  • fuel nozzles for use with a gas turbine
  • burners for
  • Pressure atomizing burners or liquid atomizers have been used to spray or atomize liquid in the various fields as mentioned above.
  • liquid herein used is intended to mean not only liquid but also liquid materials such as solutions, suspensions and the like.
  • Injection nozzles used with such spray burners or liquid atomizers are adapted to atomize the liquid by the shearing action between the liquid as discharged through the nozzles and the ambient air (atmospheric air).
  • atomization of supply liquid requires increased pressure to supply liquid, resulting in requiring complicated and large-sized liquid supplying means such as pumps and piping.
  • the regulation of the flow rate of the injection is effected either by varying the pressure of the supply liquid or by varying the area of the nozzle opening.
  • the former method provides poor atomization at a low flow rate (low pressure), as a remedy for which air or steam has additionally been used on medium or large-sized boilers to enhance the atomization of liquid fuel, requiring more and more complicated and enlarged apparatus.
  • the latter method requires an extremely intricate construction of nozzle which is difficult to control and maintain.
  • the conventional ultrasonic liquid injecting nozzle has so small capacity for spraying that it is unsuitable for use as such injection nozzle as described above which required a large amount of atomized liquid.
  • the present invention provides a vibrating element for ultrasonic atomization formed around its periphery with an edged portion having one or more steps, said edged portion being supplied with liquid to atomize said liquid, characterized by the height (h) and width (w) of each step being such that and wherein ⁇ is the wave length of the ultrasonic waves.
  • the height (h) and width (w) of each step of the edged portion are such that 1 ⁇ h/w S 10.
  • an injection nozzle which is a fuel nozzle 10 for a gas turbine in the illustrated embodiment includes a generally cylindrical elongated valve housing 8 having a central bore 6 extending centrally therethrough.
  • a vibrating element 1 is disposed extending through the central bore 6 of the valve housing 8.
  • the vibrating element 1 includes an upper body portion la, an elongated cylindrical vibrator shank lb having a diameter smaller than that of the body portion la, and a transition portion lc connecting the body portion la and shank lb.
  • the body portion la has an enlarged diameter flange ld which is attached to the valve housing 8 by a shoulder 12 formed in the upper end of the valve housing 8 and an annular vibrator retainer 14 fastened to the upper end face of the valve housing by bolts (not shown).
  • the forward end of the vibrating alement 1, that is, the forward end of the shank lb is formed with an edged portion 2, the geometry of which will be described in details hereinafter.
  • the valve housing 8 is formed through its lower end portion with one or more supply passages 4 for feeding fuel to said edged portion 2.
  • the fuel supply port 16 of the supply passage; 4 is supplied with liquid fuel through an external supply line (not shown) from a source of fuel (not shown).
  • the flow and flow rate of fuel are controlled by a supply valve (not shown) disposed in the external supply line.
  • the vibrating element 1 is continuously vibrated by an ultrasonic generator 100 operatively connected to the body portion la.
  • liquid fuel is fed through the line, the supply valve and the supply passage 4 to the edged portion 2 where it is atomized and jetted outwardly.
  • the edged portion 2 of the vibrating element 1 is in the form of an annular staircase including five steps having progressively reduced diameters as shown in Fig. 1, but may be in the form of a staircase having two, three or four or six steps.
  • liquid which is fuel in the illustrated embodiment, 5is delivered to the edged portion 2, the stream of fuel is severed and atomized at each edge.
  • the fuel is first partially atomized at the edge (A) of the first step, and the excess portion of the fuel which has not been handled at the edge (A) of the first step is fed successively through the second step edge (B), the third step edge (C) and so forth to be handled thereby.
  • the second step edge B
  • C third step edge
  • the number of steps required for atomization will vary with changes, in the flow rate so as to ensure generally uniform conditions such as the thickness of liquid film at the location of each step where the atomization takes place, resulting in uniform particle shape and size of the droplets being atomized.
  • the vibrating element according to this invention provides for a full range of flow rates usually required for atomization so that atomization of various types of liquid materials may be accomplished, whether it may be on an intermittent basis or on a continuous basis.
  • the height ( h ) and width (w) of the steps of the edged portion shown in Fig. 1 is such that it may act to render the liquid filmy and to dam the liquid flow.
  • Researches and experiments conducted by the present inventors have shown that the height (h) and width (w) of the steps of the edged portion must be kept in a predetermined range as follows in order to effect atomization of supplied liquid in a large quantity: .
  • ⁇ is the wavelength of the ultrasonic waves
  • the height (h) and width (w) that 1 ⁇ h/w ⁇ 10.
  • the vibrating element of the configuration as illustrated in Fig. l.the'height (h) is preferably less than 4 mm.
  • the wavelength of the ultrasonic is typically 5 cm to 50 cm depending upon the material (such as inconnel, titanium or the like) of which the vibrating element is made.
  • the output of the ultrasonic generator the vibrating element is the order of 10 W, and the amplitude and frequency of vibration of the vibrating element are in the ranges of 30 to 70 ⁇ m and 20 to 50 KHz, respectively.
  • the diameter (D) of the vibrating element is suitably in the range of X/10 to ⁇ /4. The greater the amplitude of vibration and the diameter (D), the greater the capacity for handling the liquid.
  • vibrating element of the present invention is not limited to the configuration as shown in Fig. 1, but may take various forms as shown in Fig. 3 to 5.
  • the forward end of the vibrating element shown in Fig. 3 is formed with an edged portion 2' having one or more steps of equal diameter, three steps (A'), (B'), (C') in the illustrated embodiment.
  • the shape of the edged portion 2' as viewed in the direction of the arrow (X) is not limited to a circular shape, but may be triangular, square or some other polygonal shape.
  • the height (h) and width (w) of the steps of the edged portion 2' are sized as defined by the equations (1) and (2) as indicated hereinabove.
  • the angle ( ⁇ ) may be suitably selected.
  • the angle of injection angle of injection spread
  • edged portion 2' has been described as comprising protrusions (A'), (B') and (C') which are all of the same angular shape, those protrusions need not be of angular shape but may be of any other shape, provided that they are formed around their outer peripheries with edges.
  • Figs. 4 and 5 illustrate further embodiments of this invention in which the multi-stepped edged portion 2" or 2"' has one or more steps is formed around an inner periphery of the forward end of the vibrating element 1. Again, in these embodiments, satisfactory atomization may be achieved if the aforesaid conditions are satisfied. Of course, in these embodiments, liquid is fed to the edged portion through a liquid supply passage 4' formed through the vibrating element.
  • the vibrating element having a geometry defined according to the present invention is capable of providing a wider angle of spray spread and achieving atomization in a large amount, and thereby enables the provision of an ultrasonic atomizing apparatus capable of accomplishing consistent atomization in that there is no change in the conditions of atomization (flow rate and particle size) depending upon the properties, particularly viscosity of the supply liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Special Spraying Apparatus (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP86303613A 1985-05-13 1986-05-13 Schwingungsglied für Ultraschallzerstäubung Withdrawn EP0202100A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10093585A JPS61259780A (ja) 1985-05-13 1985-05-13 超音波霧化用振動子
JP100935/85 1985-05-13

Publications (1)

Publication Number Publication Date
EP0202100A1 true EP0202100A1 (de) 1986-11-20

Family

ID=14287207

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19850307524 Expired EP0202381B1 (de) 1985-05-13 1985-10-17 Verfahren für die Erzeugung von Ultraschallschwingungen und Vorrichtung zur Zerstäubung einer Flüssigkeit
EP86303613A Withdrawn EP0202100A1 (de) 1985-05-13 1986-05-13 Schwingungsglied für Ultraschallzerstäubung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19850307524 Expired EP0202381B1 (de) 1985-05-13 1985-10-17 Verfahren für die Erzeugung von Ultraschallschwingungen und Vorrichtung zur Zerstäubung einer Flüssigkeit

Country Status (4)

Country Link
EP (2) EP0202381B1 (de)
JP (1) JPS61259780A (de)
CN (1) CN85107669B (de)
CA (2) CA1282657C (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5801106A (en) * 1996-05-10 1998-09-01 Kimberly-Clark Worldwide, Inc. Polymeric strands with high surface area or altered surface properties
US6020277A (en) * 1994-06-23 2000-02-01 Kimberly-Clark Corporation Polymeric strands with enhanced tensile strength, nonwoven webs including such strands, and methods for making same
US6053424A (en) * 1995-12-21 2000-04-25 Kimberly-Clark Worldwide, Inc. Apparatus and method for ultrasonically producing a spray of liquid
US6450417B1 (en) 1995-12-21 2002-09-17 Kimberly-Clark Worldwide Inc. Ultrasonic liquid fuel injection apparatus and method
US6543700B2 (en) 2000-12-11 2003-04-08 Kimberly-Clark Worldwide, Inc. Ultrasonic unitized fuel injector with ceramic valve body
US6663027B2 (en) 2000-12-11 2003-12-16 Kimberly-Clark Worldwide, Inc. Unitized injector modified for ultrasonically stimulated operation
US8899944B2 (en) 2009-12-04 2014-12-02 Murata Manufacturing Co., Ltd. Piezoelectric micro-blower

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010469A1 (en) * 1989-03-07 1990-09-20 Karl Holm An atomizing nozzle device for atomizing a fluid and an inhaler
US4986248A (en) * 1989-03-30 1991-01-22 Tonen Corporation Fuel supply system for internal combustion engine using an ultrasonic atomizer
FR2665849B1 (fr) * 1990-08-20 1995-03-24 Dynamad Dispositif ultrasonique pour la production en continu de particules.
CN2562869Y (zh) * 2002-08-09 2003-07-30 李化民 液体催化机
DE10301367A1 (de) 2003-01-16 2004-07-29 Mahle Gmbh Verfahren zum Einbringen von Shakerbohrungen in den Kühlkanal eines einteiligen Kolbens
US7735751B2 (en) * 2006-01-23 2010-06-15 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
FR2916810B1 (fr) * 2007-05-31 2009-08-28 Renault Sas Dispositif d'injection de fluide
WO2009067488A1 (en) * 2007-11-19 2009-05-28 Spraying Systems Company Ultrasonic atomizing nozzle with cone-spray feature
CN101592100B (zh) * 2009-04-24 2011-10-05 靳北彪 发动机用气相脉冲正时震源燃油喷射器
DE102009056839A1 (de) * 2009-12-03 2011-06-09 Siemens Aktiengesellschaft Verfahren zum Betrieb einer Dampfturbine, Dampfturbine und Zerstäuber
CN112881531B (zh) * 2020-11-19 2024-05-03 北京工业大学 一种基于喷水式超声检测手段的喷头夹具

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE852275C (de) * 1948-10-02 1952-10-13 Ultrakust Geraetebau Dipl Ing Vorsatztubus fuer einen Ultraschallsender zur UEbertragung von Ultraschallwellen auf den menschlichen Koerper
FR1271341A (fr) * 1959-12-14 1961-09-08 Hitachi Ltd Procédé d'application de matériaux de revêtement et dispositifs pour sa mise en oeuvre
US3373752A (en) * 1962-11-13 1968-03-19 Inoue Kiyoshi Method for the ultrasonic cleaning of surfaces
US3400892A (en) * 1965-12-02 1968-09-10 Battelle Development Corp Resonant vibratory apparatus
GB2126923A (en) * 1982-09-13 1984-04-04 Lechler Gmbh & Co Kg Ultrasonic liquid atomiser
US4474326A (en) * 1981-11-24 1984-10-02 Tdk Electronics Co., Ltd. Ultrasonic atomizing device
EP0159189A2 (de) * 1984-04-19 1985-10-23 Toa Nenryo Kogyo Kabushiki Kaisha Verfahren zur Ultraschallschwingung und Vorrichtung zur Zerstäubung von Flüssigkeit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756575A (en) * 1971-07-19 1973-09-04 Resources Research & Dev Corp Apparatus for producing a fuel-air mixture by sonic energy
FR2180753A1 (de) * 1972-12-01 1973-11-30 Plessey Handel Investment Ag
US4048963A (en) * 1974-07-18 1977-09-20 Eric Charles Cottell Combustion method comprising burning an intimate emulsion of fuel and water

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE852275C (de) * 1948-10-02 1952-10-13 Ultrakust Geraetebau Dipl Ing Vorsatztubus fuer einen Ultraschallsender zur UEbertragung von Ultraschallwellen auf den menschlichen Koerper
FR1271341A (fr) * 1959-12-14 1961-09-08 Hitachi Ltd Procédé d'application de matériaux de revêtement et dispositifs pour sa mise en oeuvre
US3373752A (en) * 1962-11-13 1968-03-19 Inoue Kiyoshi Method for the ultrasonic cleaning of surfaces
US3400892A (en) * 1965-12-02 1968-09-10 Battelle Development Corp Resonant vibratory apparatus
US4474326A (en) * 1981-11-24 1984-10-02 Tdk Electronics Co., Ltd. Ultrasonic atomizing device
GB2126923A (en) * 1982-09-13 1984-04-04 Lechler Gmbh & Co Kg Ultrasonic liquid atomiser
EP0159189A2 (de) * 1984-04-19 1985-10-23 Toa Nenryo Kogyo Kabushiki Kaisha Verfahren zur Ultraschallschwingung und Vorrichtung zur Zerstäubung von Flüssigkeit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6020277A (en) * 1994-06-23 2000-02-01 Kimberly-Clark Corporation Polymeric strands with enhanced tensile strength, nonwoven webs including such strands, and methods for making same
US6053424A (en) * 1995-12-21 2000-04-25 Kimberly-Clark Worldwide, Inc. Apparatus and method for ultrasonically producing a spray of liquid
US6450417B1 (en) 1995-12-21 2002-09-17 Kimberly-Clark Worldwide Inc. Ultrasonic liquid fuel injection apparatus and method
US6659365B2 (en) 1995-12-21 2003-12-09 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid fuel injection apparatus and method
US5801106A (en) * 1996-05-10 1998-09-01 Kimberly-Clark Worldwide, Inc. Polymeric strands with high surface area or altered surface properties
US6543700B2 (en) 2000-12-11 2003-04-08 Kimberly-Clark Worldwide, Inc. Ultrasonic unitized fuel injector with ceramic valve body
US6663027B2 (en) 2000-12-11 2003-12-16 Kimberly-Clark Worldwide, Inc. Unitized injector modified for ultrasonically stimulated operation
US8899944B2 (en) 2009-12-04 2014-12-02 Murata Manufacturing Co., Ltd. Piezoelectric micro-blower

Also Published As

Publication number Publication date
CA1275132A (en) 1990-10-09
CA1282657C (en) 1991-04-09
JPS61259780A (ja) 1986-11-18
CN85107669B (zh) 1988-12-21
EP0202381A1 (de) 1986-11-26
EP0202381B1 (de) 1989-12-20
CN85107669A (zh) 1986-11-12

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Inventor name: ENDO, MASAMI

Inventor name: HIRABAYASHI, HIDEO