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    • 61. 发明授权
    • Fluid flow sensor
    • 流体流量传感器
    • US4984461A
    • 1991-01-15
    • US283219
    • 1988-12-12
    • Joel E. Haynes
    • Joel E. Haynes
    • G01F3/16
    • G01F3/16
    • A fluid flow sensor comprises a housing having a fluid inlet and a fluid outlet, a measuring chamber in the housing connected at opposite ends to both the fluid inlet and the fluid outlet, a member in the chamber movable between opposite ends of the chamber, and a valve assembly for controlling fluid flow through the housing. The valve assembly is movable between a first position in which it cuts off one end of the chamber from the outlet so that fluid in that end of the chamber acts on the movable member to urge it to the other end of the chamber, and a second position in which it cuts off the other end of the chamber from the outlet so that the member is urged back in the opposite direction. The member oscillates back and forth at a rate proportional to the flow rate.
    • 流体流量传感器包括具有流体入口和流体出口的壳体,所述壳体中的测量室在与所述流体入口和所述流体出口两端相对的端部处连接,所述室中可在所述室的相对端之间移动的构件和 用于控制通过壳体的流体流动的阀组件。 阀组件可在第一位置和第二位置之间移动,在该第一位置,其将腔室的一端从出口切断,使得腔室的该端部中的流体作用在可移动构件上以将其推到腔室的另一端, 其中它从出口切除腔室的另一端,使得构件沿相反方向被推回。 该构件以与流速成比例的速率来回摆动。