DE917037C - Device for reflecting mechanical vibrations - Google Patents

Device for reflecting mechanical vibrations

Info

Publication number
DE917037C
DE917037C DEG2997D DEG0002997D DE917037C DE 917037 C DE917037 C DE 917037C DE G2997 D DEG2997 D DE G2997D DE G0002997 D DEG0002997 D DE G0002997D DE 917037 C DE917037 C DE 917037C
Authority
DE
Germany
Prior art keywords
housing
mechanical vibrations
reflecting mechanical
medium
filled
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
DEG2997D
Other languages
German (de)
Inventor
Dr-Ing Johannes Gruetzmacher
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.)
JOHANNES GRUETZMACHER DR ING
Original Assignee
JOHANNES GRUETZMACHER DR ING
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 JOHANNES GRUETZMACHER DR ING filed Critical JOHANNES GRUETZMACHER DR ING
Priority to DEG2997D priority Critical patent/DE917037C/en
Application granted granted Critical
Publication of DE917037C publication Critical patent/DE917037C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/20—Reflecting arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Description

Vorrichtung zur Reflexion mechanischer Schwingungen Die Erfindung betrifft eine Vorrichtung zur Reflexion mechanischer Schwingungen, wie sie beispielsweise von piezoelektrischen oder magnetostriktiven Schwingern erzeugt werden. Zur Reflexion solcher Schwingungen können Körper verwendet werden, welche hohl in Form eines Gehäuses ausgebildet und mit Luft, insbesondere von unteratmosphärischem Druck, oder einem anderen Medium von ähnlich kleinem akustischem Widerstand gefüllt sind.Device for reflecting mechanical vibrations The invention relates to a device for reflecting mechanical vibrations, such as those for example be generated by piezoelectric or magnetostrictive oscillators. For reflection Such vibrations can be used bodies which are hollow in the form of a housing formed and with air, in particular of subatmospheric pressure, or a another medium with a similarly low acoustic resistance.

Beim Dauerbetrieb mit solchen Reflexionskörpern, insbesondere bei der Übertragung großer Energien, hat sich ergehen, daß das Gehäuse infolge der hohen Beanspruchung leicht undicht wird. Als Ursache hierfür konnte festgestellt werden, daß sich das Gehäuse und insbesondere das in diesem befindliche Medium während eines längeren Betriebes so stark erwärmen, daß .infolge der Ausdehnung des Mediums erhebliche Spannungen im Gehäuse auftreten.In continuous operation with such reflective bodies, especially with the transmission of great energies, that the case has suffered as a result of the high Easily leaks under stress. The cause for this could be determined that the housing and in particular the medium located in it during a Heat up so much during prolonged operation that .as a result of the expansion of the medium considerable Tensions occur in the housing.

Erfindungsgemäß wird dieser Nachteil dadurch vermieden, daß das Gehäuse mit einer Membranwandung oder mit ähnlichen Mitteln versehen wird, die eine Ausdehnung des Mediums ohne erhebliche Spannungen im Gehäuse ermöglichen. Am einfachsten ist es, die der Schwingungsquelle abgewandte Seite der Wandung des Gehäuses als Membran auszubilden. Die Größe des Gehäusehohlraumes paßt sich dann der jeweils erreichten Temperatur durch entsprechende Bewegung der :Membran an.According to the invention, this disadvantage is avoided in that the housing is provided with a membrane wall or with similar means that allow expansion of the medium without significant stresses in the housing. The easiest is it, the side facing away from the vibration source of the wall of the housing as a membrane to train. The size of the housing cavity fits then the each temperature reached by moving the membrane accordingly.

Claims (1)

PATENTANSPRUCH: Vorrichtung zur Reflexion mechanischer Schwingungen, insbesondere Ultraschallschwingungen, bestehend aus einem Gehäuse, das mit Luft, insbesondere von unteratmosphärischem Druck, oder einem anderen Medium von ähnlich kleinem akustischem Widerstand gefüllt ist, dadurch gekennzeichnet, daß das Gehäuse mit einer Membranwandung oder mit ähnlichen Mitteln versehen ist, die eine Ausdehnung des Mediums ohne erhebliche Spannungen im Gehäuse ermöglichen. Angezogene Druckschriften: Britische Patentschrift NTr. I24 825.PATENT CLAIM: Device for reflecting mechanical vibrations, in particular ultrasonic vibrations, consisting of a housing that is filled with air, especially from sub-atmospheric pressure, or another medium of similar small acoustic resistance is filled, characterized in that the housing is provided with a membrane wall or with similar means that allow an expansion of the medium without significant stresses in the housing. Referred publications: British patent specification NTr. I24 825.
DEG2997D 1938-04-01 1938-04-01 Device for reflecting mechanical vibrations Expired DE917037C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG2997D DE917037C (en) 1938-04-01 1938-04-01 Device for reflecting mechanical vibrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG2997D DE917037C (en) 1938-04-01 1938-04-01 Device for reflecting mechanical vibrations

Publications (1)

Publication Number Publication Date
DE917037C true DE917037C (en) 1954-08-23

Family

ID=7116959

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG2997D Expired DE917037C (en) 1938-04-01 1938-04-01 Device for reflecting mechanical vibrations

Country Status (1)

Country Link
DE (1) DE917037C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709404A1 (en) * 1987-03-21 1988-11-10 Schubert Werner Treatment device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB124825A (en) * 1916-04-27 1919-04-10 Sidney Mitchell Davison Improvements in Submarine Sound Signalling Apparatus.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB124825A (en) * 1916-04-27 1919-04-10 Sidney Mitchell Davison Improvements in Submarine Sound Signalling Apparatus.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709404A1 (en) * 1987-03-21 1988-11-10 Schubert Werner Treatment device

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