Continuously variable electrically actuated flow control valve for high
temperature applications
    2.
    发明授权
    Continuously variable electrically actuated flow control valve for high temperature applications 失效
    用于高温应用的连续可变电动流量控制阀

    公开(公告)号:US6079210A

    公开(公告)日:2000-06-27

    申请号:US118156

    申请日:1998-07-16

    摘要: A continuously variable electrical actuator rotationally coupled to and thermally isolated from a butterfly valve. The butterfly valve may be used to modulate high temperature exhaust gas flow through an engine turbocharger. An electrical actuator provides a continuously variable output to an output shaft. The butterfly valve has its rotary position controlled by an input shaft. The input shaft and output shaft are rotationally coupled through minimum contact points to reduce heat transfer. The connection between input and output shafts also minimizes vibration transfer therebetween. An coupling tube coaxially interposed between the input and output shafts provides a thermal block to further reduce heat transfer. The input and outputs shafts are rotationally coupled to the intermediate shaft by torsion spring mechanisms to allow a limited range of axial translation for the input shaft. The torsion spring mechanisms are preloaded to prevent rotational hysteresis in the butterfly valve.

    摘要翻译: 旋转耦合到蝶形阀并与蝶阀隔热的连续可变的电致动器。 蝶阀可用于调节通过发动机涡轮增压器的高温排气流。 电致动器向输出轴提供连续可变的输出。 蝶阀的旋转位置由输入轴控制。 输入轴和输出轴通过最小接触点旋转耦合,以减少传热。 输入和输出轴之间的连接也最小化了它们之间的振动传递。 同轴地插入在输入和输出轴之间的耦合管提供热块以进一步减少热传递。 输入和输出轴通过扭转弹簧机构旋转地联接到中间轴,以允许用于输入轴的有限范围的轴向平移。 扭簧机构被预先装载以防止蝶阀中的旋转滞后。