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    • 1. 发明授权
    • Piezoelectrically driven fluids pump and piezoelectric fluid valve
    • 压电式液压泵和压电流体阀
    • US06869275B2
    • 2005-03-22
    • US10073953
    • 2002-02-14
    • Henry M. DanteHector AlonsoA. Clifton Lilly, Jr.
    • Henry M. DanteHector AlonsoA. Clifton Lilly, Jr.
    • F04B43/04F04B17/03
    • F04B43/046
    • A piezoelectrically driven fluid pump includes a chamber having two opposite sidewalls formed by flexible membranes, and an inlet and an outlet each regulated by a valve. Separate piezo elements are fixed to each of the membranes, to flex the membranes and increase or reduce the chamber volume and thereby draw fluid into the chamber or expel fluid from the chamber. The valves are each formed by two adjacent piezo elements that are supported or flexibly joined together at two opposite ends. When actuated, the valve piezo elements flex outward between the two opposite ends, opening the valve to form an aperture between the two piezo elements. In another embodiment, a fluid pump includes a chamber having one flexible membrane sidewall. A valve-regulated inlet or outlet aperture through the membrane communicates with the pump chamber. A ring-shaped piezo centered around the aperture, on the membrane, flexes the membrane.
    • 压电驱动的流体泵包括具有由柔性膜形成的两个相对侧壁的腔室,以及每个由阀调节的入口和出口。 单独的压电元件固定到每个膜上,以弯曲膜并增加或减小室体积,从而将流体引入室中或从腔室排出流体。 这些阀都由两个相邻的压电元件形成,两个相邻的压电元件在两个相对的端部被支撑或柔性地连接在一起。 当致动时,阀压电元件在两个相对端之间向外弯曲,打开阀以在两个压电元件之间形成孔。 在另一个实施例中,流体泵包括具有一个柔性膜侧壁的室。 通过膜的阀调节的入口或出口孔与泵室连通。 围绕膜孔的环形压电体在膜上弯曲。