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    • 6. 发明授权
    • Flow rate detection mechanism with a restriction element for mass flow meters
    • 具有质量流量计限制元件的流量检测机构
    • US06247495B1
    • 2001-06-19
    • US09452636
    • 1999-12-01
    • Keiichiro YamamotoYoshihiro Taniguchi
    • Keiichiro YamamotoYoshihiro Taniguchi
    • G01F500
    • G01F5/00G01F1/684Y10T137/7761Y10T137/87354Y10T137/87539
    • A flow proportioning assembly for dividing a portion of a fluid flow such as gas for presentation to a sensor includes a holder member having a central opening and forming an exterior peripheral passageway when inserted within a conduit of a flow meter housing. A resistor member can be adjustably mounted in the central opening downstream of a holder member aperture to encourage a laminar flow pattern and a large entrance port and a large exit port can communicate with a passageway that is operatively connected with a sensor. The exit port is downstream of the resistor member. Flexible fastener members can engage the resistor member and the holder member for ease of mounting. The resistor member can also comprise a helical arrangement of small fluid passageways to encourage laminar flow.
    • 用于将诸如用于呈现的气体的流体流的一部分分割成传感器的流量比例组合件包括具有中心开口的保持器构件,并且当插入到流量计壳体的管道内时形成外部周边通道。 电阻器构件可以可调节地安装在保持器构件孔的下游的中央开口中,以促进层流图案,并且大的入口和大的出口可与与传感器可操作地连接的通道连通。 出口在电阻构件的下游。 柔性紧固件可以与电阻件和保持件接合,以方便安装。 电阻器构件还可以包括小的流体通道的螺旋排列以促进层流。