| 摘要 |
The invention relates to a miniature fan made of polyvinyl fluoride, used in applications wherein there is necessary a reduced overall dimension, low electric consumption, lack of moving parts and of electric sparks. According to the invention, the fan comprises two piezoelectric foils (1) made of polyvinyl fluoride, provided with metal electrodes and coupled as a bimorphous element rigidly fixed at one end (2), the other end (3) being left free to oscillate, at the fixed end (2), the foils (1) being electrically insulated and folded outwards to provide an electric access to the electrodes extant inside, the thus carried out assembly being supplied at an alternating electric voltage. |
