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    Method and apparatus for selectively mixing gases
    1.
    发明授权
    Method and apparatus for selectively mixing gases 失效
    选择性混合气体的方法和装置

    公开(公告)号：US5159924A

    公开(公告)日：1992-11-03

    申请号：US592271

    申请日：1990-10-03

    申请人： Michael J. Cegielski ,  Teunis T. van den Berg

    发明人： Michael J. Cegielski ,  Teunis T. van den Berg

    IPC分类号： A61M16/10

    CPC分类号： A61M16/104

    摘要： A mixing device for respiratory, therapeutic, or anesthetic uses provides two of three gases to a mixed gas outlet. A gas selecting means fluidly connected with a first and second gas supplies selectively provides fluid passage of only one of the first or second gases to the outlet. A gas bypass selectively bypasses two of the three gases to the gas outlet. A locking device activated by the selecting means prevents a predetermined one of the first or second gases from being bypassed to the gas outlet. A first and second pressure balancing regulator equalizing the pressures of the selected gas and the third gas before passing those gases to a controllable mixing device which meters the gases into a mixing chamber, after which the gases are passed to the gas outlet. Advantageously, a gas selector knob is positioned coaxially with a mixing valve such that rotation of the selector valve causes correctly calibrated scales to become visible to reflect the mixture of the selected gases as they are mixed.

    摘要翻译： 用于呼吸，治疗或麻醉用途的混合装置将三种气体中的两种提供给混合气体出口。 与第一和第二气体供应物流体连接的气体选择装置选择性地将第一或第二气体中的仅一个的流体通向出口。 气体旁路选择性地将三种气体中的两种旁路到气体出口。 由选择装置激活的锁定装置防止第一或第二气体中的预定的一个被旁路到气体出口。 第一和第二压力平衡调节器在使这些气体通过可控混合装置之前使选定气体和第三气体的压力相等，该混合装置将气体计量到混合室中，然后将气体通入气体出口。 有利地，气体选择器旋钮与混合阀同轴地定位，使得选择阀的旋转导致正确校准的刻度变得可见以在混合时反射所选择的气体的混合物。