EP0434980B1 - Vorrichtung zum Zerstäuben von flüssigen und festen Stoffen, vorzugsweise geschmolzenen Metalls - Google Patents

Vorrichtung zum Zerstäuben von flüssigen und festen Stoffen, vorzugsweise geschmolzenen Metalls Download PDF

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Publication number
EP0434980B1
EP0434980B1 EP90122347A EP90122347A EP0434980B1 EP 0434980 B1 EP0434980 B1 EP 0434980B1 EP 90122347 A EP90122347 A EP 90122347A EP 90122347 A EP90122347 A EP 90122347A EP 0434980 B1 EP0434980 B1 EP 0434980B1
Authority
EP
European Patent Office
Prior art keywords
fluid
nozzles
pulverizing
fluid jet
jet
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
EP90122347A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0434980A3 (en
EP0434980A2 (de
Inventor
Klaus Prof. Dr.-Ing. Bauckhage
Peter Dipl.-Ing. Schreckenberg
Hermann Dr. Phil. Vetters
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.)
Branson Ultraschall Niederlassung der Emerson Technologies GmbH and Co OHG
Original Assignee
Branson Ultraschall Niederlassung der Emerson Technologies GmbH and Co OHG
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 Branson Ultraschall Niederlassung der Emerson Technologies GmbH and Co OHG filed Critical Branson Ultraschall Niederlassung der Emerson Technologies GmbH and Co OHG
Publication of EP0434980A2 publication Critical patent/EP0434980A2/de
Publication of EP0434980A3 publication Critical patent/EP0434980A3/de
Application granted granted Critical
Publication of EP0434980B1 publication Critical patent/EP0434980B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/088—Fluid nozzles, e.g. angle, distance

Definitions

  • the invention relates to a device for atomizing at least one jet of a liquid or solid substance, preferably molten metal, according to the preamble of patent claim 1.
  • the invention is based on a known device (EP-A1 0 308 933), in which the radiating sonotrode surfaces are arranged in the tapered section of a nozzle, through which an inert or reaction gas is introduced into the ultrasonic field between the sonotrode surfaces. This gas flow promotes the atomization process and allows targeted particle transport out of the atomization area.
  • the combustion air can be blown radially through slot or ring nozzles into the pressure bellies or nodes of the standing wave of an ultrasonic field that is generated between a sonotrode and a reflector .
  • the invention has for its object to design the device of the type described so that the atomization throughput is significantly increased and the atomization process can be better controlled.
  • the atomizing fluid jet which is generally liquid
  • the additional fluid which is usually gaseous
  • the throughput of additional fluid through the nozzles can be set separately from the atomizing fluid.
  • several atomizing and additional fluid jets are introduced.
  • the throughput of atomizing fluid should not exceed an upper limit, since the jet then breaks through in the atomizing area and reduces the atomizing power.
  • additional fluid flows are introduced into the atomization areas in the pressure node simultaneously and in addition to the actual atomization fluid jet, the atomization fluid mass throughput can be increased significantly.
  • Liquids especially melts
  • solid substances minerals, powders, foams
  • Gas, steam, mist, liquid, powder or the like can be used as the additional fluid.
  • FIG. 1 shows the device known from EP-A 0 308 933, in which an ultrasound standing field 3 with pressure nodes and pressure bellies is generated between two sonotrodes 1 and 2.
  • the openings of melting crucibles 4 open into the node areas, from which one or more jets of melt emerge and are atomized in the ultrasound field of a gas passed between the sonotrode surfaces 5, 6.
  • the sonotrode 2 belongs to an ultrasonic vibrator 10, which is shown in FIG. 2, which has a booster 11 and a converter 12.
  • a housing 15 surrounding the converter 12 and the booster 11 is fastened in a pressure-tight manner.
  • the housing 15 is arranged via a sleeve 17, which is also provided with seals 16, in an outer housing 18 which forms the passage through a wall 19 which separates the outer space 20 from the pressure space 21, in which the atomization is carried out.
  • the cable 22 is introduced into the converter 12 via the housing 18.
  • the housing 15 can be adjusted axially via an adjusting device 23.
  • FIG. 3 shows an end view of the sonotrode surface 5 of the sonotrode 1.
  • the atomizing fluid nozzles 25 there are several individual additional fluid nozzles 26 which are connected to pressure medium sources (not shown).
  • the nozzles 25 and 26 are directed radially and offset on the circumference. Fluid flows are directed via the nozzles 25, 26 specifically onto the longitudinal axis 7 of the oscillator arrangement.
  • the introduction into the pressure node regions of the ultrasound field is preferably carried out, as can also be seen from FIG. 5.
  • the nozzles are arranged alternately, so that in addition to an atomizing fluid jet from the nozzle 25, an additional fluid jet emerges from the nozzle 26.
  • FIG. 4 shows ring nozzles 28 in which the atomizing fluid jet emerges from a central opening 29 and the additional fluid jet emerges from an annular opening 30, which surrounds the central nozzle in a ring. All of these nozzles are each directed into a pressure node area of the standing wave.
  • FIG. 5 shows the arrangement of several such individual or ring nozzles 25, 26, 28 shown in FIG. 3 or 4 for introducing atomizing and additional fluid flows into the individual pressure node areas of the standing wave.
  • a plurality of nozzles 25, 26, 28 are again provided for each pressure node area, as shown in FIG. 3 or 4.
  • FIG. 6 shows a flat nozzle 35 with inlets 36 for atomizing fluid and inlets 37 for additional gas.
  • the additional gas jet enters the atomizing area of the ultrasonic wave on both sides of the atomizing gas jet emerging in the center.
  • FIG. 7 shows the end view of the rectangular sonotrodes 1, area 5, for which the flat nozzle 35 is particularly suitable.
  • the atomization performance can also be increased.
  • FIG. 8 shows the arrangement in which a plurality of nozzles 25, 26 or ring nozzles 28 arranged in rows next to one another are provided in the ultrasound field generated by a large-area, rectangular sonotrode 1, which are each arranged in the planes of the pressure node areas.
  • FIG. 9 shows a further measure to improve the atomization performance.
  • the sonotrode surfaces 5 and 6 are concave, so that the energy in the node of the ultrasonic standing wave is focused and thus the acoustic pressure is increased.
  • the sonotrode radiation surfaces can be coated in order to reduce wettability. This can be done, for example, by evaporating boron nitrite, titanium nitrite or by chrome plating or anodizing, etc.

Landscapes

  • Special Spraying Apparatus (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP90122347A 1989-11-27 1990-11-22 Vorrichtung zum Zerstäuben von flüssigen und festen Stoffen, vorzugsweise geschmolzenen Metalls Expired - Lifetime EP0434980B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3993178 1989-11-27
DE3939178A DE3939178A1 (de) 1989-11-27 1989-11-27 Vorrichtung zum zerstaeuben von fluessigen und festen stoffen, vorzugsweise geschmolzenen metalls

Publications (3)

Publication Number Publication Date
EP0434980A2 EP0434980A2 (de) 1991-07-03
EP0434980A3 EP0434980A3 (en) 1991-12-04
EP0434980B1 true EP0434980B1 (de) 1995-05-31

Family

ID=6394275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90122347A Expired - Lifetime EP0434980B1 (de) 1989-11-27 1990-11-22 Vorrichtung zum Zerstäuben von flüssigen und festen Stoffen, vorzugsweise geschmolzenen Metalls

Country Status (5)

Country Link
US (1) US5122047A (ja)
EP (1) EP0434980B1 (ja)
JP (1) JPH03242257A (ja)
AT (1) ATE123239T1 (ja)
DE (2) DE3939178A1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5176874A (en) * 1991-11-05 1993-01-05 General Electric Company Controlled process for the production of a spray of atomized metal droplets
GB9207940D0 (en) * 1992-04-10 1992-05-27 Alcan Int Ltd Motors
US5794861A (en) * 1995-10-05 1998-08-18 D & R Recyclers, Inc. Process and apparatus for separating components of fragmented vehicle tires
DE10245326A1 (de) * 2002-09-27 2004-04-08 Abb Patent Gmbh Ultraschall-Stehwellen-Zerstäuberanordnung
DE10245324A1 (de) * 2002-09-27 2004-04-08 Abb Patent Gmbh Ultraschall-Stehwellen-Zerstäuberanordnung
DE10252437A1 (de) * 2002-11-12 2004-05-27 Abb Patent Gmbh Ultraschall-Stehwellen-Zerstäuberanordnung
JP2004290877A (ja) * 2003-03-27 2004-10-21 Toyota Motor Corp 回転霧化塗装装置
DE10327431A1 (de) * 2003-06-18 2005-01-05 Abb Patent Gmbh Ultraschall-Stehwellen-Zerstäuberanordnung
DE10327430A1 (de) * 2003-06-18 2005-01-05 Abb Patent Gmbh Ultraschall-Stehwellen-Zerstäuberanordnung
DE10327429A1 (de) * 2003-06-18 2005-01-05 Abb Patent Gmbh Ultraschall-Stehwellen-Zerstäuberanordnung
US8893992B2 (en) * 2012-04-19 2014-11-25 General Electric Company System and method for pulverizing a substance
CN109622980A (zh) * 2019-01-28 2019-04-16 哈尔滨工业大学 一种熔融金属超声驻波非接触式雾化制粉装置及方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3274642A (en) * 1965-05-12 1966-09-27 Armour & Co Apparatus for prilling ammonium nitrate
GB1272229A (en) * 1968-11-27 1972-04-26 British Iron Steel Research Improvements in and relating to the treatment of molten material
US4153201A (en) * 1976-11-08 1979-05-08 Sono-Tek Corporation Transducer assembly, ultrasonic atomizer and fuel burner
DE2842232C2 (de) * 1978-09-28 1985-04-18 Battelle-Institut E.V., 6000 Frankfurt Verfahren und Vorrichtung zum Zerstäuben von Flüssigkeiten, Suspensionen und Emulsionen, agglomerierten Stäuben bzw. Pulvern sowie Mischungen derselben
CA1159356A (en) * 1979-10-25 1983-12-27 Kurt Skoog Method and device for producing microdroplets of fluid
DE3108481A1 (de) * 1980-04-17 1982-02-04 Hauni-Werke Körber & Co KG, 2050 Hamburg Vorrichtung zum auftragen von weichmacherfluessigkeit auf eine bewegte gewebebahn
DE3407059A1 (de) * 1984-02-27 1985-08-29 Siemens AG, 1000 Berlin und 8000 München Verfahren zur herstellung reagierter rohstoffe fuer elektrokeramik
DE3713253A1 (de) * 1986-07-23 1988-02-04 Bosch Gmbh Robert Ultraschallzerstaeuberanlage
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
DE3732325A1 (de) * 1987-09-25 1989-04-13 Battelle Institut E V Vorrichtung zum zerstaeuben eines fluessigen mediums mit hilfe von ultraschall
LU87346A1 (de) * 1988-09-27 1990-04-06 Euratom Verfahren und vorrichtung zum herstellen eines pulvers aus amorpher keramischer oder metallischer substanz

Also Published As

Publication number Publication date
EP0434980A3 (en) 1991-12-04
ATE123239T1 (de) 1995-06-15
EP0434980A2 (de) 1991-07-03
JPH03242257A (ja) 1991-10-29
US5122047A (en) 1992-06-16
DE59009180D1 (de) 1995-07-06
DE3939178A1 (de) 1991-05-29

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