EP0202381B1 - Verfahren für die Erzeugung von Ultraschallschwingungen und Vorrichtung zur Zerstäubung einer Flüssigkeit - Google Patents

Verfahren für die Erzeugung von Ultraschallschwingungen und Vorrichtung zur Zerstäubung einer Flüssigkeit Download PDF

Info

Publication number
EP0202381B1
EP0202381B1 EP19850307524 EP85307524A EP0202381B1 EP 0202381 B1 EP0202381 B1 EP 0202381B1 EP 19850307524 EP19850307524 EP 19850307524 EP 85307524 A EP85307524 A EP 85307524A EP 0202381 B1 EP0202381 B1 EP 0202381B1
Authority
EP
European Patent Office
Prior art keywords
liquid material
vibrating element
edged portion
needle valve
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.)
Expired
Application number
EP19850307524
Other languages
English (en)
French (fr)
Other versions
EP0202381A1 (de
Inventor
Hideo Hirabayashi
Masami Endo
Kakuro Kokubo
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 EP0202381A1 publication Critical patent/EP0202381A1/de
Application granted granted Critical
Publication of EP0202381B1 publication Critical patent/EP0202381B1/de
Expired legal-status Critical Current

Links

Images

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 the art of atomizing liquid material by ultrasonic vibration, and particularly to an ultrasonic injecting method and injection nozzle suitable for use on a fuel injecting valve for internal combustion engines such as diesel engines, gasoline engines and gas turbine engines, and external combustion engines such as burners for boilers, heating furnaces, heating apparatus and the like, and also for a spray head for drying and producing powdered medicines.
  • a fuel injecting valve for internal combustion engines such as diesel engines, gasoline engines and gas turbine engines, and external combustion engines such as burners for boilers, heating furnaces, heating apparatus and the like
  • a spray head for drying and producing powdered medicines.
  • this invention is useful as an injection nozzle or as an apparatus for atomizing liquid material in various applications such as described above the invention will be more particularly described hereinafter with respect to a fuel injecting nozzle particularly for use with internal combustion engines such as diesel and gasoline engines.
  • This invention is not, however, to be regarded as so limited.
  • the term "liquid material” is intended to mean not only a liquid
  • the cavitation mechanism is unsuitable for application to an injection valve because of difficulty in controlling the degree of atomizing.
  • the wave mechanism includes the capillary system and the liquid film system.
  • an ultrasonic vibrating element has a capillary aperture formed therethrough. Liquid fuel is introduced through the inlet port of the capillary aperture while the ultrasonic vibrating element is subjected to vibration, whereby the liquid fuel is spread through the outlet of the capillary aperture in a film form over the bottom surface of the vibrating element and then injected in an atomized state.
  • an ultrasonic vibrating element is formed on its forward end with a portion flared as in the form of a poppet valve. Liquid fuel is delivered to and spread over the face portion in a film form and then injected in an atomized state.
  • the injection nozzles hitherto proposed have so small capacity for spraying that they are unsuitable for use as an injection nozzle for internal combustion engines such as diesel or gasoline engines which require a large amount of atomized fuel.
  • FR-A-2,180,753 describes an injection nozzle for atomizing fuel in a fuel injection system for an engine.
  • the ultrasonic injection method involves vibrating a vibrating element by means of ultrasonic vibration generating means, the vibrating element being formed at its forward end with an edged portion, and delivering fuel to and along said edged portion to atomize the fuel.
  • an ultrasonic vibration method of atomizing a liquid material by vibrating a vibrating element by means of ultrasonic vibration generating means comprises forming an edged portion at the forward end of said vibrating element and delivering a liquid material to and along said edged portion to atomize the liquid material and is characterized in that said liquid material is delivered to and along a single surface of said edged portion which is formed with at least two successive steps, in that the flow of liquid material along said edged portion is dammed at two or more of the step edges across which the liquid material is delivered in succession, and in that the liquid material is delivered across each of said step edges in the form of a film.
  • liquid fuel may be atomized in a large quantity for injection into an internal combustion engine.
  • the vibrating element may be continuously vibrated and the delivery of the liquid material to the edged portion of the vibrating element may be either intermittently or continuously effected, thereby eliminating the time lag involved in initiating vibration of the vibrating element which is a defect of conventional ultrasonic injection nozzles for internal combustion engines where the vibrating element is vibrated only when it is required to inject liquid fuel.
  • the present invention is applicable to the continuous burning of fuel in a fuel burner and also to spraying for spray drying to produce powdered medicines for example, and for humidifying.
  • the present invention is useful not only in relation to internal combustion engines such as a diesel engine, gasoline engine, gas turbine engine and the like, but also in relation to external combustion engines such as burners for boilers, heating furnaces, heating apparatus and the like for atomizing liquid fuel in a uniform manner and in a large quantity to thereby provide for attaining complete combustion in a short time, resulting in preventing or reducing emission of soot as well as improving fuel economy.
  • internal combustion engines such as a diesel engine, gasoline engine, gas turbine engine and the like
  • external combustion engines such as burners for boilers, heating furnaces, heating apparatus and the like for atomizing liquid fuel in a uniform manner and in a large quantity to thereby provide for attaining complete combustion in a short time, resulting in preventing or reducing emission of soot as well as improving fuel economy.
  • the method of the present invention is capable of not only atomizing liquid in a large amount but also atomizing liquid even at a low flow rate at which the prior art is unable to effect atomizing, to thereby enhance fuel efficiency.
  • the present invention includes an ultrasonic injection nozzle for performing the method of the invention as hereinbefore defined comprising an ultrasonic vibration generating means, an elongated vibrating element connected at one end to said ultrasonic vibration generating means and having an edged portion at its other end, and valve means defining a supply passage for delivering liquid material to an along said edged portion characterized in that said edged portion is formed with a succession of at least two steps along a single surface to which the liquid material is delivered from said supply passage, and in that said valve means comprises a needle valve slidably mounted on said vibrating element adjacent its edged portion, a needle valve holder adapted to hold said needle valve for slidable movement, said needle valve holder co-operating with said needle valve to define a supply passage for the liquid material, and spring means normally urging said needle valve toward said holder to close said liquid material supply passage.
  • the ultrasonic injection nozzle 1 includes a generally cylindrical elongated housing 4 having a central bore 2 extending centrally therethrough. Threaded to an external thread 6 on the upper portion of the housing 4 is the lower mounting portion of a vibrator holder 8 which has a through bore 12 extending centrally therethrough coaxially with and in longitudinal alignment with the central bore of the housing 4.
  • a vibrating element or vibrator 14 is mounted in the through bore 12 of the vibrator holder 8 and the central bore 2 of the housing 4.
  • the vibrating element 14 comprises an upper body portion 16, an elongated cylindrical vibrator shank 18 having a diameter smaller than that of the body portion 16, and a transition portion 20 connecting the body portion 16 and shank 18.
  • the body portion 16 has an enlarged diameter collar 22 therearound which is clamped to the vibrator holder 8 by a shoulder 24 formed on the inner periphery of the vibrator 8 adjacent its upper end and an annular vibrator retainer 30 fastened to the upper end face of the vibrator holder 8.
  • the shank 18 of the vibrating element 14 extends downwardly or outwardly beyond the housing 4.
  • the forward end of the vibrating element 14, that is, the forward end of the shank portion 18 is formed with an edged portion 32 as will be described in more detail hereinafter.
  • a sleeve-like needle valve 34 is slidably mounted on that portion of the vibrating element 14 extending beyond the housing 4.
  • the needle valve 34 is generally of hollow cylindrical shape, and comprises an upper reduced-diameter portion 36 adjacent its upper end, a central large-diameter portion 38, a tapered portion 40 sloping from the large-diameter portion 38, a small-diameter portion 42 connected to the tapered portion 40, and a tapered forward end portion 44 sloping from the small-diameter portion 42.
  • the extreme end of the tapered forward end portion 44 is disposed adjacent the edged portion 32 of the vibrating element 14.
  • the upper reduced-diameter portion 36 of the hollow needle valve 34 extends upwardly beyond an annular shoulder 46 extending radially inwardly from the lower end portion of the housing 4.
  • the hollow needle valve 34 is housed in a needle valve holder 50 which is detachably secured to the housing 4 by means of a holder sheath 52 which is affixed to the outer periphery of the holder 50.
  • the inner configuration of the needle valve holder 50 comprises a large-diameter bore portion 54 in which the central large-diameter portion 38 of the hollow needle valve 34 is adapted to slidably move, a sloped portion 56 complementary to the tapered portion 40 of the needle valve 34, a small-diameter bore portion 58, and a sloped forward end portion.
  • the small-diameter bore portion 58 and sloped forward end portion 60 cooperate with the small-diameter portion 42 and sloped forward end portion 44 of the hollow needle valve 34 to define a liquid fuel supply passage 62.
  • the needle valve holder 50 is formed around its sloped portion 56 with an annular fuel reservoir 64 opening radially inwardly which is in communication with a fuel supply passage 66 extending through the wall of the needle valve holder 50.
  • Said fuel supply passage 66 is in communication with a fuel inlet passage 68 extending through the wall of the housing 4, which inlet passage 68 is in turn connected with a fuel inlet port 70 of the housing 4.
  • the needle valve holder 50 is formed around the upper part of the large-diameter bore portion 54 of the needle valve holder 50 with an annular radially inwardly opening return fuel sump 72 which is connected with a fuel outlet port 78 via a fuel return passage 74 and a fuel outlet passage 76 formed through the walls of the needle valve holder 50 and the housing 4, respectively.
  • a compression spring 80 is disposed in an annular space defined between the peripheral watt of the central bore 2 in the housing 4 and the outer periphery of the vibrator shank 18.
  • the lower end of the compression spring 80 acts against the top end face of the upper reduced-diameter portion 36 of the hollow needle valve 34 via an annular spring retainer 82 while the upper end of the spring abuts againstthe bottom surface of an injection pressure regulating member 84 which is a cylindrical member disposed in the space between the peripheral wall of the central bore 2 in the housing 4 and the outer periphery of the vibrator shank 18 and screw threadedly connected to the inner periphery of the housing 4.
  • the spring pressure on the needle valve 34 may be adjusted by rotating the injection pressure regulating member 84 relative to the housing 4.
  • liquid fuel is introduced through the fuel inlet port 70 and supplied through the fuel inlet passage 68 and the fuel supply passage 66 into the fuel reservoir 64 which is closed by the tapered portion of the hollow needle valve 34 urged downwardly by the spring 80. Consequently, the pressure in the reservoir 64 is built up as it is continuously supplied with liquid fuel. When the pressure in the fuel reservoir 64 reaches a certain level, the hollow needle valve 34 is caused to move upward against the biasing force of the spring 80.
  • the upward movement of the hollow needle valve 34 causes the fuel reservoir 64 to be opened to the fuel supply passage 62, which is thus supplied with the liquid fuel. From the fuel supply passage 62, the fuel is delivered to the edged portion 32 formed on the forward end of the vibrating element 14.
  • the edged portion 32 of the vibrating element 14 may be in the form of a staircase including three concentric steps having progressively reduced diameters as shown in Fig. 1, or it may comprise two orfive steps as shown in Figs. 2 and 3.
  • the edged portion 32 is formed around or along its outer periphery with an edge or edges.
  • the edged portion 32 as shown in Figs. 1 to 3 is of a stepped configuration having progessively reduced diameters
  • the steps of the edged portion 32 may have progressively increased diameters or steps of progressively reduced and then progressively increased diameters.
  • the geometry such as the width (W) and height (h) of each step is such that the edge of the step may act to render the liquid fuel filmy and to dam the liquid flow.
  • the height (h) and width (W) of each step are lZh/ W ⁇ 10. Particularly in the vibrating element having the configuration as shown in Fig. 3 the height (h) is preferably less than 4 mm.
  • the wave length ( ⁇ ) of the ultrasonic waves varies with the materials used for the vibrating element such as Inconel, titanium, etc. and is usually in the range of 5 to 50 cm.
  • the output of the ultrasonic oscillatorfor vibrating the vibrating element is substantially 10 W and the amplitude and frequency of the vibrating element are 30 to 70 mm and 20 to 50 kHz, respectively.
  • the diameter (D) of the vibrating element is preferably in the range of A/10 to N4. The flow rate of the liquid to be processed increases as the amplitude and diameter (D) are larger.
  • the vibrating element 14 is continuously vibrated by ultrasonic vibration generating means 100 operatively connected to the body portion 16, so that the liquid fuel is atomized and injected outwardly as it is delivered to the edged portion 32.
  • the small-diameter portion 42 of the hollow needle valve 34 is formed with a plurality of, say, two diametrically opposed angularly extending grooves 43 (see Fig. 5). It has been found that such arrangement causes turbulence to be produced in the fuel supply passage as well as imparting a swirl to the fuel being injected to thereby eliminate uneven injection. In addition, such an arrangement may also serve to promote separation of the spray of fuel off the edges of the edged portion 32 as well as to enhance the atomization.
  • Output of ultrasonic vibration generating means 10 watts.
  • Amplitude of vibration of vibrating element 34 ⁇ n.
  • the fuel outlet 78 is connected via a suitable conduit (not shown) with the fuel tank so that the excess fuel is recirculated to the tank.
  • the hollow needle valve 34 is moved downward under the action of the spring 80 to close the fuel reservoir 64, so that the delivery of fuel to the edged portion 32 of the vibrating element 14 is interrupted, and the fuel injection from the nozzle 1 is discontinued.
  • the injection nozzle being described with reference to the accompanying drawings is capable of providing a large amount of injection at 0.06 cm 3 per injection which makes it possible to put the nozzle to practical use as an injection nozzlefor an internal combustion engine. This is 500 to 1,000 times as high as the flow rate as was reported to be possible with the prior art ultrasonic injection nozzle.
  • the vibration element 14 having the edged portion 32 is so arranged adjacent the outlet port of the injection nozzle whereby a very compact ultrasonic injection nozzle is provided.
  • the present invention is also applicable to a burner for continuous combustion in which the flow rate may be in the order of 100 1/hr.
  • This invention may also be used as a spray drying apparatus for producing powdered medicines.
  • this invention is also characterized in that it is capable of providing generally uniform distribution in atomized particles with an average particle radius in the order of 10 to 30 um.
  • the present invention provides an ultrasonic injecting method and injecting nozzle capable of not only atomizing a liquid material in a uniform manner and in a large quantity but also atomizing a liquid material even at a low flow rate, on either an intermittent or a continuous basis.
  • the ultrasonic injecting method and injection nozzle according to this invention is suitable for use on internal combustion engines such as a diesel engine, gasoline engine, gas turbine engine and the like, for use on external combustion engines such as burners for boilers, heating furnaces, heating apparatus and the like, or for use on a spraying or humidifying apparatus.
  • internal combustion engines such as a diesel engine, gasoline engine, gas turbine engine and the like
  • external combustion engines such as burners for boilers, heating furnaces, heating apparatus and the like
  • spraying or humidifying apparatus for use on a spraying or humidifying apparatus.

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)

Claims (12)

1. Ultraschallschwingungsverfahren zum Zerstäuben eines Flüssigmaterials, indem ein Schwingüngselement (14) mittels einer Ultraschallschwingungen erzeugenden Einrichtung (100) in Schwingungen versetzt wird, wobei ein Kantenbereich (32) am vorderen Ende des Schwingungselements gebildet und ein Flüssigmaterial zu und entlang dem Kantenbereich zur Zerstäubung des Flüssigmaterials gefördert wird, dadurch gekennzeichnet, daß das Flüssigmaterial zu und entlang einer einzigen Oberfläche des Kantenbereichs gefördert wird, die mit zumindest zwei aufeinanderfolgenden Stufen ausgebildet ist, daß der Strom des Flüssigmaterials entlang dem Kantenbereich an zwei oder mehreren der Stufenkanten, über die das Flüssigmaterial nacheinander gefördert wird, gestaut wird und daß das Flüssigmaterial über jede der Stufenkanten in der Form eines Films gefördert wird.
2. Verfahren nach Anspruch 1, bei dem das Schwingungselement kontinuierlich in Schwingungen versetzt und die Förderung des Flüssigmaterials zu dem Kantenbereich des Schwingungselements entweder intermittierend oder kontinuierlich durchgeführt wird.
3. Verfahren nach Anspruch 1 oder 2, bei dem das Flüssigmaterial ein flüssiger Kraftstoff zur Verwendung in einem Verbrennungsmotor, wie einem Dieselmotor, einem Benzinmotor oder dgl., oder einer Kraftmaschine mit äußerer Verbrennung, wie einem Brenner oder dgl., ist.
4. Verfahren nach Anspruch 1 oder 2, bei dem das Flüssigmaterial eine Suspension ist, aus der pulverige Arzneimittel hergestellt werden sollen.
5. Ultraschalleinspritzdüse zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, bestehend aus einer Einrichtung (100) zum Erzeugen von Ultraschallschwingungen, einem langgestreckten Schwingungselement (14), das an einem Ende mit der Einrichtung zum Erzeugen der Ultraschallschwingungen verbunden ist und einen Kantenbereich (32) an seinem anderen Ende aufweist, und aus einer Ventileinrichtung (34), die einen Zuführkanal (62) zur Förderung von Flüssigmaterial zum und entlang dem Kantenbereich (32) bildet, dadurch gekennzeichnet, daß der Kantenbereich (32) mit einer Folge von zumindest zwei Stufen entlang einer einzigen Oberfläche ausgebildet ist, der das Flüssigmaterial vom Zuführkanal (62) zugefördert wird, und daß die Ventileinrichtung ein gleitbar am Schwingungselement (14) nahe dessen Kantenbereich (32) angebrachtes Nadelventil (34) umfaßt, ein Nadelventilhalter (50) zur Abstützung des Nadelventils (34) für eine Gleitbewegung geeignet ist, der Nadelventilhalter (50) mit dem Nadelventil (34) zur Bildung eines Zuführkanals (62) für das Flüssigmaterial zusammenwirkt und eine Federeinrichtung (80) normalerweise das Nadelventil (34) zum Halter (50) hin für ein Schließen des Flüssigmaterialzuführkanals (62) drückt.
6. Einspritzdüse nach Anspruch 5, bei der zumindest zwei Stufen um den Außenumfang des Schwingungselements gebildet sind.
7. Einspritzdüse nach Anspruch 6, bei der die Höhe (h) und die Breite (W) jeder Stufe wie folgt bemessen sind:
Figure imgb0009
Figure imgb0010
wobei A die Wellenlänge der Ultraschallwellen ist.
8. Einspritzdüse nach Anspruch 7, bei der das Verhältnis zwischen der Höhe (h) und der Breite (W) wie folgt ist:
Figure imgb0011
9. Schwingungselement zur Verwendung in einer Ultraschalleinspritzdüse nach Anspruch 5, 6, 7 oder 8, wobei das Element an einem Ende auf seinem Außenumfang mit einem mehrstufigen Kantenbereich (32) ausgebildet ist, der aus einer Folge von zumindest zwei Stufen in Form einer Treppe besteht.
10. Schwingungselement nach Anspruch 9, bei dem die Stufen des mehrstufigen Kanenbereichs (32) einen zu dem einen Ende des Elements hin fortschreitend kleiner werdenden Durchmesser aufweisen.
11. Schwingungselement nach Anspruch 9 oder 10, bei dem die Höhe (h) und die Breite (W) jeder Stufe wie folgt bemessen sind:
Figure imgb0012
Figure imgb0013
wobei A die Wellenlänge der Ultraschallwellen ist.
12. Schwingungselement nach Anspruch 11, bei dem das Verhältnis zwischen der Höhe (h) und der Breite (W) wie folgt ist:
Figure imgb0014
EP19850307524 1985-05-13 1985-10-17 Verfahren für die Erzeugung von Ultraschallschwingungen und Vorrichtung zur Zerstäubung einer Flüssigkeit Expired EP0202381B1 (de)

Applications Claiming Priority (2)

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

Publications (2)

Publication Number Publication Date
EP0202381A1 EP0202381A1 (de) 1986-11-26
EP0202381B1 true EP0202381B1 (de) 1989-12-20

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 After (1)

Application Number Title Priority Date Filing Date
EP86303613A Withdrawn EP0202100A1 (de) 1985-05-13 1986-05-13 Schwingungsglied für Ultraschallzerstäubung

Country Status (4)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Families Citing this family (15)

* 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.
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
US5801106A (en) * 1996-05-10 1998-09-01 Kimberly-Clark Worldwide, Inc. Polymeric strands with high surface area or altered surface properties
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
US8613400B2 (en) * 2007-11-19 2013-12-24 Spraying Systems Co. 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
KR101363554B1 (ko) 2009-12-04 2014-02-18 가부시키가이샤 무라타 세이사쿠쇼 압전 마이크로 블로어
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

Family Cites Families (10)

* 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
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
US4474326A (en) * 1981-11-24 1984-10-02 Tdk Electronics Co., Ltd. Ultrasonic atomizing device
DE3233901C2 (de) * 1982-09-13 1986-11-06 Lechler Gmbh & Co Kg, 7012 Fellbach Ultraschall-Flüssigkeitszerstäuber
JPS60222552A (ja) * 1984-04-19 1985-11-07 Toa Nenryo Kogyo Kk 超音波噴射方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Also Published As

Publication number Publication date
CA1282657C (en) 1991-04-09
CN85107669A (zh) 1986-11-12
EP0202381A1 (de) 1986-11-26
EP0202100A1 (de) 1986-11-20
JPS61259780A (ja) 1986-11-18
CA1275132A (en) 1990-10-09
CN85107669B (zh) 1988-12-21

Similar Documents

Publication Publication Date Title
EP0159189B1 (de) Verfahren zur Ultraschallschwingung und Vorrichtung zur Zerstäubung von Flüssigkeit
EP0202381B1 (de) Verfahren für die Erzeugung von Ultraschallschwingungen und Vorrichtung zur Zerstäubung einer Flüssigkeit
CA1276665C (en) Vibrating element for ultrasonic atomization having curved multi-stepped edged portion
CA1276664C (en) Vibrating element for ultrasonic injection
US4799622A (en) Ultrasonic atomizing apparatus
US4756478A (en) Vibrating element for use on an ultrasonic injection nozzle
US4726523A (en) Ultrasonic injection nozzle
US4726524A (en) Ultrasonic atomizing vibratory element having a multi-stepped edged portion
EP0196390B1 (de) Ultraschalleinspritzdüsen
EP0251524B1 (de) Ultraschallzerstäuber
JPS63218273A (ja) 液体霧化装置
JPH0423592B2 (de)
JPS6294713A (ja) チエツク弁付超音波噴霧装置
JPH0423591B2 (de)
JPS62129173A (ja) 液体の振動霧化装置
JPS62288357A (ja) 超音波霧化装置付ガソリンエンジン
KR900003969B1 (ko) 초음파 분사용 진동자
JPS62237209A (ja) 超音波霧化装置付燃焼装置
JPH02293065A (ja) 超音波霧化用振動子
JPH02259264A (ja) ガソリンエンジン用超音波霧化装置付燃料供給装置
JPH02259270A (ja) インジェクタータイプの超音波霧化装置
JPH0332764A (ja) 超音波霧化装置
JPS58190612A (ja) 燃焼機の混焼装置
JPS6249108A (ja) 超音波燃焼装置
JPS62136263A (ja) 超音波霧化装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT NL SE

RBV Designated contracting states (corrected)

Designated state(s): IT SE

17P Request for examination filed

Effective date: 19861217

17Q First examination report despatched

Effective date: 19870826

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): IT SE

ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19901016

Year of fee payment: 6

ITTA It: last paid annual fee
26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19911018

EUG Se: european patent has lapsed

Ref document number: 85307524.0

Effective date: 19920510