Ultrasonic converter

Details Ultrasonic converter Ultrasonic converter

H - Electricity

04

R

H04R 1/28 (2006.01) B06B 1/06 (2006.01) G10K 11/16 (2006.01)

Patent

CA 2122442

11 An ultrasonic converter (1) is proposed with a housing (5) and a cylindrical ceramic oscillator (2) of slight thickness with metal electrodes (7, 8), arranged at the front faces of the ceramic oscillator (2) and an adaptation layer (3) made of a synthetic material arranged between the front face of the ceramic oscillator (2) facing the irradiating medium and the membrane (6) of the ultrasonic converter (1) formed by the floor of the housing. The remaining free space of the housing (5) is filled with a synthetic damping layer (4) for damping the ceramic oscillator [2]. The innovation of the invention lies in that the damping layer (4) is formed from a silicon elastomer of high density with a large proportion of metal oxide, which can be mixed and applied mechanically during the gel phase of the adaptation layer (4).

L'invention porte sur un convertisseur ultrasonique (1) comportant un boîtier (5) et un oscillateur céramique cylindrique (2) mince. L'oscillateur (2) comprend des électrodes métalliques (7, 8) disposées sur sa partie avant et une couche d'adaptation (3), faite d'une matière synthétique, qui est placée entre la partie avant de l'oscillateur céramique (2) faisant face au milieu irradiant et la membrane (6) du convertisseur ultrasonique (1), laquelle est formée par le plancher du boîtier. L'espace libre restant dans le boîtier (5) est rempli d'une couche synthétique antivibrante (4) pour amortir l'oscillateur céramique (2). L'invention est innovatrice par le fait que la couche antivibrante (4) est formée d'un élastomère de silicium à haute densité avec une large proportion d'oxyde métallique, lequel peut être mélangé et appliqué de façon mécanique au cours de la phase de gélification de la couche d'adaptation (4).

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