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    • 17. 发明授权
    • Device for the removal of the ice formed on the surface of a wall,
notably an optical or radio-electrical window
    • 用于移除在墙壁表面形成的冰的装置,不具有光学或无线电电子窗
    • US5172024A
    • 1992-12-15
    • US769721
    • 1991-10-02
    • Dominique BroussouxMichel C. CeccaldiPierre Leclerc
    • Dominique BroussouxMichel C. CeccaldiPierre Leclerc
    • E06B7/14B06B1/06B08B7/02B64C1/14B64D15/16E06B7/12H01Q1/02H01Q1/42
    • B64C1/1484B06B1/0688B08B7/02B64D15/163H01Q1/02H01Q1/42Y10S310/80
    • A device to eliminate ice formed on the surface of a wall, notably on the surface of an optical or radio-electric window, comprises a piezoelectric material having a vibrating active surface that mechanically cooperates with the wall to be de-iced, and means for the polarization of this piezoelectric material, comprising an AC voltage source and conducting or semiconducting electrodes placed in contact with this material according to a geometry capable of generating, within this material, an acoustic wave that has a direction of vibration which is oriented longitudinally and/or transversally to said surface to be de-iced, the amplitude of this vibration being sufficient to respectively detach and/or break the deposit of ice formed on said surface. The piezoelectric material is preferably a ferroelectric polymer such as a polymer of the group comprising PVF.sub.2, PVF.sub.2 -TrFE, PVDCN-VAc, PVF.sub.2 -TFE and the mixture of these polymers with one another and/or with PMMA or PEMA. The electrodes are preferably formed into a thin layer deposited on the surface of the piezoelectric material, and their material is then advantageously a material of the group comprising resistive indium-tin oxide, the polymers that are conductive in a matrix, hydrogenated amorphous silicon and polyimides charged with organic salts.
    • 一种消除在壁表面上形成的冰的装置,特别是在光学或无电电动窗的表面上,包括具有振动的活性表面的压电材料,其与待除冰的壁机械配合,以及用于 该压电材料的极化包括交流电压源和与该材料接触的导电或半导体电极,该几何形状能够在该材料内产生具有纵向和/或纵向取向的振动方向的声波, 或横向于要除冰的所述表面,该振动的振幅足以分别分离和/或破坏形成在所述表面上的冰的沉积物。 压电材料优选为铁电聚合物,例如包含PVF2,PVF2-TrFE,PVDCN-VAc,PVF2-TFE的聚合物以及这些聚合物彼此和/或与PMMA或PEMA的混合物。 电极优选地形成为沉积在压电材料的表面上的薄层,并且它们的材料有利地是包括电阻性铟锡氧化物的组的材料,在基体中导电的聚合物,氢化非晶硅和聚酰亚胺 带有有机盐。