PIEZOELECTRIC ELEMENT WITH EXTENDED LIFESPAN, ITS USE AND CORRESPONDING NEBULIZATION DEVICE

Abstract

This element (I) comprises a plate (1) made of a piezoelectric material which has, on the acoustic wave emission face, a first electrode (2) cooperating with a single connecting wire (4) and, on the opposite face (12), a second electrode (3) cooperating with two electrical connecting wires (5, 6) fixed on extensions (32, 34) of this second electrode. According to the invention, each wire (5, 6), cooperating with the second electrode (3) is such that the total geometric cross-section (π(D5)2 / 4) of the second wire is between 0.15 and 0.40 square millimeters (mm2), the diameter (d5) of each strand of this wire is between 0.035 and 0.060 millimeters (mm), and the total number of strands (n) is between 100 and 160. This combination of values ​​gives sufficient flexibility to the wire, thus reducing the mechanical stresses exerted at the junction between the strands and the brazing pad.This flexibility also allows the use of wires with small radial dimensions, ensuring use in an environment that promotes miniaturization. Figure for the abbreviation: [Fig. 5].

Claims

7.

8. wire (4), adjacent to the first electrode (2) and, in particular, the entirety of each first wire satisfies the combination of K1 values, preferably the combination of K2 values, even more preferably the combination of K3 values. Use of a piezoelectric element according to any one of the preceding claims, in a nebulizing device. Nebulizing device comprising at least one piezoelectric element according to any one of claims 1 to 6. [Fig. 1]

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