AT91043B - Device for sound transmission under water. - Google Patents

Device for sound transmission under water.

Info

Publication number
AT91043B
AT91043B AT91043DA AT91043B AT 91043 B AT91043 B AT 91043B AT 91043D A AT91043D A AT 91043DA AT 91043 B AT91043 B AT 91043B
Authority
AT
Austria
Prior art keywords
under water
sound transmission
membrane
transmission under
water
Prior art date
Application number
Other languages
German (de)
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT91043B publication Critical patent/AT91043B/en

Links

Landscapes

  • Diaphragms And Bellows (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Einrichtung   znr Scballiibertragung   unter Wassei. 



   Gemäss der Erfindung wird die zur Übertragung der Schallenergie auf das Wasser oder umgekehrt dienende Membran von   Unterwassersohallübertragern   so ausgebildet, dass die Membran sich nicht auf ihrer ganzen Fläche, sondern im wesentlichen nur an einem   vernältnismässig   schmalen Randstreifen durchbiegen kann, während der vom Rande entfernter liegende Teil der Membran möglichst ohne Durchbiegung   hin-und herschwingt.   



   Durch diese Anordnung wird eine wirksamere Ausnutzung der   Membranfläche.   erzielt. Diese wirksamere Ausnutzung beruht darauf, dass die Membran mit Ausnahme des schmalen Randstreifens eine überall annähernd gleichmässige Beschleunigung erhält, während die gewöhnlichen Membranen eine nach der Mitte zu wachsende Beschleunigung erhalten. Bei den gewöhnlichen Membranen wird 
 EMI1.1 
 erheblich überschritten.

   Für die Möglichkeit der   Energieübertragung durch   eine Membran kommt aber praktisch nicht die durchschnittliche, sondern die maximal   auftretende Beschleunigung   insofern in Betracht, weil an den Stellen, an denen eine gewisse Beschleunigung   überschritten   wird,   Störungen   auftreten, die teils auf der Lösung des Zusammenhangs zwischen Wasser   und Membranohelfläehe, zum   Teil auf dem Auftreten von Luftblasen beruhen. 



   Nun ist aber die Verstärkung der Membran mit einer unter Umständen schädlichen   Erhöhung   ihrer Masse verbunden. Deshalb wird gemäss der Erfindung gegebenenfalls die Anordnung so getroffen. dass die Durchbiegung der Membran durch aufgesetzte Rippen verhindert wird, statt die Membran in ihrer ganzen Ausdehnung zu verstärken. 



   PATENT-ANSPRÜCHE : 
 EMI1.2 
 welche die   Schwingungsenergie   an das Wasser abgibt oder von ihm aufnimmt, in ihrem mittleren Teil starr, in dem ihn umgebenden Randstreifen aber nachgiebig ausgebildet ist, zum Zwecke, den ganzen mittleren Teil der Membran mit der höchst zulässigen Amplitude schwingen zu lassen. 
 EMI1.3 
 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Device for ball transfer under water.



   According to the invention, the membrane used to transmit the sound energy to the water or vice versa is designed in such a way that the membrane cannot bend over its entire surface, but essentially only on a relatively narrow edge strip, while the part that is further away from the edge the diaphragm swings back and forth as far as possible without bending.



   This arrangement makes more effective use of the membrane area. achieved. This more effective use is based on the fact that, with the exception of the narrow edge strip, the membrane receives an almost uniform acceleration everywhere, while the normal membranes receive an acceleration that increases towards the center. In the case of ordinary membranes,
 EMI1.1
 significantly exceeded.

   For the possibility of energy transfer through a membrane, however, it is practically not the average, but the maximum acceleration that comes into consideration, because at the points where a certain acceleration is exceeded, disturbances occur, which are partly due to the resolution of the relationship between water and Membranohelfläehe, based in part on the appearance of air bubbles.



   However, the reinforcement of the membrane is associated with a possibly harmful increase in its mass. Therefore, according to the invention, the arrangement may be made in this way. that the deflection of the membrane is prevented by attached ribs instead of reinforcing the membrane in its entire extent.



   PATENT CLAIMS:
 EMI1.2
 which emits or absorbs the vibration energy from the water, rigid in its central part, but flexible in the edge strip surrounding it, for the purpose of making the entire central part of the membrane vibrate with the highest permissible amplitude.
 EMI1.3
 

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

**WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT91043D 1916-04-14 1917-04-12 Device for sound transmission under water. AT91043B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE91043X 1916-04-14

Publications (1)

Publication Number Publication Date
AT91043B true AT91043B (en) 1923-01-25

Family

ID=5643501

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91043D AT91043B (en) 1916-04-14 1917-04-12 Device for sound transmission under water.

Country Status (1)

Country Link
AT (1) AT91043B (en)

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