EP 2382448 A1 20111102 - ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM
Title (en)
ULTRASONIC TRANSDUCER FOR USE IN A FLUID MEDIUM
Title (de)
ULTRASCHALLWANDLER ZUM EINSATZ IN EINEM FLUIDEN MEDIUM
Title (fr)
TRANSDUCTEUR D'ULTRASONS DESTINÉ À ÊTRE EMPLOYÉ DANS UN FLUIDE
Publication
Application
Priority
- EP 2009065894 W 20091126
- DE 102008055123 A 20081223
Abstract (en)
[origin: WO2010072506A1] The invention relates to an ultrasonic transducer (110) for use in a fluid medium. The ultrasonic transducer (110) comprises at least one piezoelectric transducer element (112) and at least one adjustment body (116) for promoting vibration coupling between the piezoelectric transducer element (112) and the fluid medium. The ultrasonic transducer (110) furthermore comprises at least one equalization body (118) introduced between the piezoelectric transducer element (112) and the adjustment body (116) in order to reduce thermal stresses, especially at least one intermediate layer, wherein the equalization body (118) has a thermal expansion coefficient (CTEZwischen) that ranges between a thermal expansion coefficient (CTEPiezo) of the piezoelectric transducer element (112) and a thermal expansion coefficient (CTEAnpass) of the adjustment body (116). The equalization body (118) has at least one homogenous and/or macroscopicically at least substantially isotropic material, especially a material mixture.
IPC 8 full level
G01F 1/66 (2006.01); G10K 11/02 (2006.01)
CPC (source: EP US)
G01F 1/662 (2013.01 - EP US); G01F 1/667 (2013.01 - EP US); G10K 11/02 (2013.01 - EP US); Y10T 29/49005 (2015.01 - US)
Citation (search report)
See references of WO 2010072506A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010072506 A1 20100701; CN 102265121 A 20111130; DE 102008055123 B3 20100722; EP 2382448 A1 20111102; JP 2012513714 A 20120614; JP 5665765 B2 20150204; US 2012038248 A1 20120216; US 8698378 B2 20140415
DOCDB simple family (application)
EP 2009065894 W 20091126; CN 200980151410 A 20091126; DE 102008055123 A 20081223; EP 09765072 A 20091126; JP 2011542744 A 20091126; US 99898009 A 20091126