| 摘要 |
1,200,517. 517. Pure fluid amplifiers. HONEYWELL Inc. May 3, 1966 [May 4,1967J, No.21013/68. Heading G3H. [Also in Divisions G1 and G4] A sensing apparatus, e.g. a speed sensor, comprises a fluidic amplifier having two surfaces between which fluid-flows, at least a part of one being planar and being formed by a surface of a movable member 14, there being means for driving the member 14 e.g. a shaft 15, to cause it to move in its own plane, e.g. by rotating, the arrangement being such that movement of the member tends to divert fluid-flow within the amplifier in a manner dependent on the movement of the member. When the member 14 is stationary, fluid-flow through control passages 18 and 19 is equal, and fluid from a power jet 21 is split equally between outlet legs 23 and 24, but upon rotation of the member e.g. anti-clockwise, flow through the passage 18 is assisted but flow through 19 is impeded, consequently a differential pressure arises at outlets 23 and 24 indicative of the speed of rotation of the shaft 15. The amplifier can be of a proportional or bi-stable type. The member 14 can oscillate, and be of rectangular shape. |
