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    • 7. 发明授权
    • Servovalve apparatus
    • 伺服阀装置
    • US4464978A
    • 1984-08-14
    • US349860
    • 1982-02-18
    • Ken IchiryuHaruo WatanabeMasami Nemoto
    • Ken IchiryuHaruo WatanabeMasami Nemoto
    • F15B13/04F15B13/044H02K41/035
    • F15B13/0402F15B13/0446H02K41/035Y10T137/86622
    • A servovalve apparatus comprising a servovalve and a force motor operatively connected to a valve element of the servovalve for driving the valve element. The force motor includes an annular magnet, and first and second members cooperating with each other to define therebetween an annular gap concentric with the annular magnet. A cylindrical coil operatively connected to the valve element is disposed in the annular gap in concentric relation therewith and is reciprocated within the annular gap in response to the electric current passing through the coil. First and second cylindrical resilient members thermally connect one and the other axial ends of the cylindrical coil to first and second stoppers, respectively, to transmit the Joule heat generated by the coil to the first and second stoppers.
    • 一种伺服阀装置,包括伺服阀和可操作地连接到用于驱动阀元件的伺服阀的阀元件的力马达。 力马达包括环形磁体,第一和第二构件彼此配合以在其间限定与环形磁体同心的环形间隙。 可操作地连接到阀元件的圆柱形线圈设置在与其同心的环形间隙中,并响应于通过线圈的电流而在环形间隙内往复运动。 第一和第二圆柱形弹性构件将圆柱形线圈的一个和另一个轴向端部分别热连接到第一和第二止动件,以将由线圈产生的焦耳热传递到第一和第二止动件。