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DE4203729A1 - Mechanical amplitude-amplifier for high amplification of ultrasonic vibrations - has graded conical vibrator shape with reflection surface area larger than cross-section in the middle region - Google Patents

Mechanical amplitude-amplifier for high amplification of ultrasonic vibrations - has graded conical vibrator shape with reflection surface area larger than cross-section in the middle region

Info

Publication number
DE4203729A1
DE4203729A1 DE19924203729 DE4203729A DE4203729A1 DE 4203729 A1 DE4203729 A1 DE 4203729A1 DE 19924203729 DE19924203729 DE 19924203729 DE 4203729 A DE4203729 A DE 4203729A DE 4203729 A1 DE4203729 A1 DE 4203729A1
Authority
DE
Germany
Prior art keywords
cross
section
amplifier
graded
amplitude
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.)
Ceased
Application number
DE19924203729
Other languages
German (de)
Inventor
Harald Dr Ing Hielscher
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19924203729 priority Critical patent/DE4203729A1/en
Priority to DE9218777U priority patent/DE9218777U1/en
Publication of DE4203729A1 publication Critical patent/DE4203729A1/en
Ceased legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B06GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06BMETHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B3/00Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B3/02Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency involving a change of amplitude

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

The mechanical amplitude-amplifier of ultrasonic vibrations has a lambda/2 graded cylindrical vibrator. In its conical region, the cross-section (1) is smaller by lambda/4 than the size of the reflection area (2). The cross-section of the lower part (6) decreases in the middle portion of the vibrator. A hole (4) is made so that the cross-section (1) decreases within the graded region of the amplitude-amplifier. The length of the hole should be more than half the lower part (6) of the vibrator. USE/ADVANTAGE - Smaller mass and less material used in the ultrasonic vibrator.

Description

Die Erfindung betrifft einen mechanischen Ampli­ tudenverstärker zur sehr hohen Verstärkung von Ultraschall-Schwingungen.The invention relates to a mechanical amplifier Student amplifier for very high amplification of Ultrasonic vibrations.

Diese macht sich erforderlich, weil die zur Um­ wandlung von elektrischer HF-Energie in mechani­ sche HP-Schwingungen verwendeten Piezoelemente nur begrenzte Amplituden erzeugen können und zu große Amplituden zur Verringerung des Wirkungs­ grades und zur Erhöhung der Eigenerwärmung der Piezoelemente führen.This is necessary because the order conversion of electrical HF energy into mechani HP vibrations used piezo elements can only produce limited amplitudes large amplitudes to reduce the effect degrees and to increase the self-heating of the Lead piezo elements.

Die aus dem Stand der Technik bekannten Amplitu­ denverstärker, wie sie bevorzugt in Ultraschall­ desintegratoren Verwendung finden, bestehen aus hochelastischem Material, meist aus Titanlegie­ rungen. Sie sind derart ausgebildet, daß die An­ regungsfläche Fe des Amplitudenverstärkers, auf welche die mechanischen Schwingungen durch den Ultraschallwandler übertragen werden, um ein Mehrfaches größer ist als die Abstrahlungsfläche Fa desselben, wobei der Amplitudenverstärker ähnlich einem abgestuften Zylinder als Lamb­ da/2-Schwinger ausgebildet ist. Dabei ist das Verhältnis von Abstrahlungsamplitude Aa und An­ regungsamplitude Ae bei einem als Stufenhorn ausgebildeten Amplitudenverstärker annäherndThe amplifiers known from the prior art, as they are preferably used in ultrasound disintegrators, consist of highly elastic material, mostly of titanium alloys. They are designed in such a way that the excitation surface F e of the amplitude amplifier, to which the mechanical vibrations are transmitted by the ultrasonic transducer, is several times larger than the radiation surface F a of the same, the amplitude amplifier being similar to a stepped cylinder as Lamb da / 2- Schwinger is trained. The ratio of radiation amplitude A a and excitation amplitude A e is approximately the same for an amplitude amplifier designed as a step horn

Um eine hohe Amplitudenverstärkung zu erreichen, ist es bisher üblich, daß die Anregungsfläche Fe des meist zylindrischen Oberteiles sehr groß aus­ gebildet ist oder sogar mehrere Amplitudenver­ stärker hintereinander angebracht werden müs­ sen.In order to achieve a high amplitude amplification, it has hitherto been customary for the excitation surface F e of the mostly cylindrical upper part to be formed very large, or even for a plurality of amplitudes to be attached more successively.

Als nachteilig daran erweist sich der große Auf­ wand an hochwertigem Material, das hohe Gewicht und die damit verbundene Unhandlichkeit des Des­ integrators sowie die durch die große Masse ver­ ursachten höheren Anforderungen an die kompli­ zierte elektronische Schaltung des HF-Genera­ tors.The big up turns out to be disadvantageous wrangled on high quality material, the high weight and the associated unwieldiness of the Des integrators as well as the ver cause higher demands on the compli graced electronic circuit of the HF-Genera tors.

Es ist daher Aufgabe der vorliegenden Erfindung, den Materialeinsatz bei einer vorgegebenen Am­ plitudenverstärkung gegenüber dem bisherigen Stand der Technik deutlich zu verringern.It is therefore an object of the present invention the use of materials at a given Am increase in confidence compared to the previous one To significantly reduce the state of the art.

Erfindungsgemäß wird diese Aufgabe durch die im kennzeichnenden Teil des Anspruches 1 genannten Merkmale gelöst.According to the invention, this object is achieved by the characterizing part of claim 1 Features solved.

Vorteilhafte Ausgestaltungen ergeben sich aus den Merkmalen der Unteransprüche.Advantageous configurations result from the characteristics of the subclaims.

Der Amplitudenverstärker als Lambda/2-Schwinger ist erfindungsgemäß dadurch gekennzeichnet, daß im Bereich der Abstufung desselben, also bei ei­ ner Länge von etwa Lambda/4 der Querschnitt Fm deutlich kleiner als der Querschnitt der Ab­ strahlungsfläche Fa ausgebildet wird. Dadurch läßt sich eine Amplitudenverstärkung erreichen, die annähernd dem VerhältnisThe amplitude amplifier as a lambda / 2 oscillator is characterized in that the cross section F m is formed significantly smaller than the cross section of the radiation area F a in the range of the same, that is to say with a length of approximately lambda / 4, the cross section F m . This enables an amplification of the amplitude to be achieved which is approximately the ratio

entspricht.corresponds.

Durch den zum Ende des Amplitudenverstärkers hin größer werdenden Querschnitt wird darüberhinaus bei gleicher Frequenz eine insgesamt kürzere Ausführung erreicht.By the end of the amplitude amplifier the cross-section becomes larger a shorter overall at the same frequency Execution reached.

Erfindungsgemäß kann das mit der in Fig. 1 dar­ gestellten Anordnung erreicht werden.According to the invention can be achieved with the arrangement shown in Fig. 1.

Dabei zeigt Fig. 1, daß sich die Querschnitts­ fläche des Unterteiles 6 in Richtung, Mitte des Amplitudenverstärkers bis zum Querschnitt 1 ver­ jüngt.Here, FIG. 1 shows that the cross-sectional area to the lower part 6 in the direction of the amplitude of the amplifier to the cross-section tapers center 1 ver.

Durch die konische Ausführung wird erreicht, daß beim Eintauchen in Flüssigkeiten die Abstrahlung der Schalleistung wie gewünscht über die Ab­ strahlungsfläche 2 erfolgt und parasitäre Schall­ abstrahlungen in andere Richtungen vermieden werden. The conical design ensures that, when immersed in liquids, the sound power is emitted as desired via the radiation surface 2 and parasitic sound emissions in other directions are avoided.

In Fig. 2 wird die erfindungsgemäße Lösung da­ durch erreicht, daß im Bereich der Abstufung des Amplitudenverstärkers durch eine vom Oberteil 5 her eingebrachte Bohrung 4 die gewünschte Quer­ schnittsverringerung erreicht wird. Die Bohrung muß dabei mindestens zu 50% in die Länge des Un­ terteiles 6 hineinragen. Die Bohrung kann auch von dem Unterteil 6 ausgehend bis zur Abstufung des Amplitudenverstärkers eingebracht sein.In Fig. 2, the solution according to the invention is achieved by the fact that the desired cross-sectional reduction is achieved in the area of the gradation of the amplitude amplifier through a bore 4 introduced from the upper part 5 . The bore must protrude at least 50% into the length of the lower part 6 Un. The bore can also be made starting from the lower part 6 up to the gradation of the amplitude amplifier.

Claims (3)

1. Mechanischer Amplitudenverstärker zur Ver­ stärkung von Ultraschallamplituden, der ähn­ lich einem abgestuften Zylinder als Lambda/2- Schwinger ausgebildet ist, dadurch gekennzeichnet, daß im Bereich der Abstufung desselben, bei ei­ ner Länge von etwa Lambda/4 der Querschnitt (1) deutlich kleiner als der Querschnitt der Ab­ strahlungsfläche (2) ausgebildet ist.1. Mechanical amplitude amplifier for the amplification of ultrasound amplitudes, which is designed similarly to a stepped cylinder as a lambda / 2-oscillator, characterized in that in the area of the gradation of the same, with a length of approximately lambda / 4, the cross section ( 1 ) clearly is smaller than the cross section of the radiation surface ( 2 ). 2. Mechanischer Amplitudenverstärker nach An­ spruch 1, dadurch gekennzeichnet, daß der Quer­ schnitt des Unterteiles (6) desselben sich zur Mitte des Amplitudenverstärkers konusartig verringert.2. Mechanical amplitude amplifier according to claim 1, characterized in that the cross section of the lower part ( 6 ) of the same decreases conically to the center of the amplitude amplifier. 3. Mechanischer Amplitudenverstärker nach An­ spruch 1, dadurch gekennzeichnet, daß eine Boh­ rung (4) derart ausgebildet ist, daß diese im Bereich der Abstufung des Amplitudenverstär­ kers eine Veringerung des Querschnitts (1) be­ wirkt.3. Mechanical amplitude amplifier according to claim 1, characterized in that a drilling tion ( 4 ) is designed such that it reduces the cross-section ( 1 ) in the area of the gradation of the amplitude amplifier.
DE19924203729 1992-02-06 1992-02-06 Mechanical amplitude-amplifier for high amplification of ultrasonic vibrations - has graded conical vibrator shape with reflection surface area larger than cross-section in the middle region Ceased DE4203729A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19924203729 DE4203729A1 (en) 1992-02-06 1992-02-06 Mechanical amplitude-amplifier for high amplification of ultrasonic vibrations - has graded conical vibrator shape with reflection surface area larger than cross-section in the middle region
DE9218777U DE9218777U1 (en) 1992-02-06 1992-02-06 Mechanical amplitude amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924203729 DE4203729A1 (en) 1992-02-06 1992-02-06 Mechanical amplitude-amplifier for high amplification of ultrasonic vibrations - has graded conical vibrator shape with reflection surface area larger than cross-section in the middle region

Publications (1)

Publication Number Publication Date
DE4203729A1 true DE4203729A1 (en) 1993-08-12

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Country Status (1)

Country Link
DE (1) DE4203729A1 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5707483A (en) * 1996-07-05 1998-01-13 Minnesota Mining And Manufacturing Company Rotary acoustic horn
WO1998001238A1 (en) * 1996-07-05 1998-01-15 Minnesota Mining And Manufacturing Company Stacked rotary acoustic horn
WO1999033665A1 (en) * 1997-12-31 1999-07-08 Mentor Corporation Ultrasonic liposuction probe
US7735751B2 (en) 2006-01-23 2010-06-15 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US7744015B2 (en) 2006-01-23 2010-06-29 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7810743B2 (en) 2006-01-23 2010-10-12 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US7819335B2 (en) 2006-01-23 2010-10-26 Kimberly-Clark Worldwide, Inc. Control system and method for operating an ultrasonic liquid delivery device
US7918211B2 (en) 2006-01-23 2011-04-05 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7963458B2 (en) 2006-01-23 2011-06-21 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US8028930B2 (en) 2006-01-23 2011-10-04 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US8191732B2 (en) 2006-01-23 2012-06-05 Kimberly-Clark Worldwide, Inc. Ultrasonic waveguide pump and method of pumping liquid
CN103624355A (en) * 2012-12-17 2014-03-12 上海声定科技有限公司 Welding wire machine amplitude-change pole
CN104289409A (en) * 2013-07-15 2015-01-21 北京中电科电子装备有限公司 Ultrasonic transducer and clamping mechanism thereof
CN106182153A (en) * 2014-08-21 2016-12-07 周振嘉 Ultrasonic micron precision processing and forming device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948154A (en) * 1956-02-16 1960-08-09 Cavitron Corp Acoustic impedance transformer
DE1207123B (en) * 1963-08-02 1965-12-16 Alcatel Sa Composite vibrator for welding or ultrasonic processing devices with piezoelectric ceramic discs
CH498662A (en) * 1968-11-12 1970-11-15 Erapa Ag Electromechanical ultrasonic energy generator, in particular for welding plastic strips

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2948154A (en) * 1956-02-16 1960-08-09 Cavitron Corp Acoustic impedance transformer
DE1207123B (en) * 1963-08-02 1965-12-16 Alcatel Sa Composite vibrator for welding or ultrasonic processing devices with piezoelectric ceramic discs
CH498662A (en) * 1968-11-12 1970-11-15 Erapa Ag Electromechanical ultrasonic energy generator, in particular for welding plastic strips

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5707483A (en) * 1996-07-05 1998-01-13 Minnesota Mining And Manufacturing Company Rotary acoustic horn
WO1998001238A1 (en) * 1996-07-05 1998-01-15 Minnesota Mining And Manufacturing Company Stacked rotary acoustic horn
WO1999033665A1 (en) * 1997-12-31 1999-07-08 Mentor Corporation Ultrasonic liposuction probe
US7963458B2 (en) 2006-01-23 2011-06-21 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US8191732B2 (en) 2006-01-23 2012-06-05 Kimberly-Clark Worldwide, Inc. Ultrasonic waveguide pump and method of pumping liquid
US7810743B2 (en) 2006-01-23 2010-10-12 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US7819335B2 (en) 2006-01-23 2010-10-26 Kimberly-Clark Worldwide, Inc. Control system and method for operating an ultrasonic liquid delivery device
US7918211B2 (en) 2006-01-23 2011-04-05 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7735751B2 (en) 2006-01-23 2010-06-15 Kimberly-Clark Worldwide, Inc. Ultrasonic liquid delivery device
US8028930B2 (en) 2006-01-23 2011-10-04 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
US7744015B2 (en) 2006-01-23 2010-06-29 Kimberly-Clark Worldwide, Inc. Ultrasonic fuel injector
CN103624355A (en) * 2012-12-17 2014-03-12 上海声定科技有限公司 Welding wire machine amplitude-change pole
CN103624355B (en) * 2012-12-17 2015-12-16 上海声定科技有限公司 Bonding equipment ultrasonic transformer
CN104289409A (en) * 2013-07-15 2015-01-21 北京中电科电子装备有限公司 Ultrasonic transducer and clamping mechanism thereof
CN104289409B (en) * 2013-07-15 2017-06-16 北京中电科电子装备有限公司 A kind of ultrasonic transducer and its clamping device
CN106182153A (en) * 2014-08-21 2016-12-07 周振嘉 Ultrasonic micron precision processing and forming device
CN106182153B (en) * 2014-08-21 2018-03-13 周振嘉 Ultrasonic micron precision processing and forming device

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