FLOW MEASURING APPARATUS
    1.
    发明申请
    FLOW MEASURING APPARATUS 审中-公开
    流量测量装置

    公开(公告)号:WO1994020018A1

    公开(公告)日:1994-09-15

    申请号:PCT/US1994002215

    申请日:1994-03-01

    Abstract: This is an apparatus for accurately and reliably measuring fluid flow under turbulent or pulsating conditions with high signal to noise ratio and using a symmetrical design which works with flow in either direction. The apparatus is particularly well suited for measuring airflow in a bi-level respiratory system. The apparatus includes a flow conduit (34), an upstream sense tube (36) protruding into the flow conduit (34) with a notch opening (38) facing into the flow stream, a downstream sense tube (40) protruding into the flow conduit (34) with a notch opening (42) facing away from the flow stream, and a flow or pressure sensor/transducer (44) disposed in connecting lines (46, 48) between the upstream and downstream sense tubes (36, 40). The notched opening (38, 42) has a square, semi-cylindrical shape. The flow conduit (34) is either straight or angled.

    Abstract translation: 这是一种用于在具有高信噪比的湍流或脉动条件下精确可靠地测量流体流量的装置,并且使用在任一方向上流动的对称设计。 该装置特别适用于测量双层呼吸系统中的气流。 所述设备包括流动管道(34),突出到流动管道(34)中的上游检测管(36),其具有面向流动流的切口开口(38),突出到流动管道中的下游检测管(40) (34),其具有面向所述流动流的切口开口(42),以及设置在所述上​​游和下游感测管(36,40)之间的连接管线(46,48)中的流量或压力传感器/换能器(44)。 切口开口(38,42)具有正方形的半圆柱形形状。 流动管道(34)是直的或成角度的。

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