| 摘要 |
<p>1,135,517. Pure fluid amplifiers. BENDIX CORP. March 6, 1967 [April 4, 1966], No. 10508/67. Heading G3H. A pneumatic amplifier having a vortex chamber 30 producing a jet 36 which is applied to a receiver 40 connected to a load 64, is characterised in that a counter flow is induced in receiver 40 and a vented chamber 42 surrounds said receiver. The Specification states that the invention provides high gain and "low noise level" by stabilizing jet 36. As shown in Fig. the main supply P.S. is applied radially to chamber 30 from a constant pressure source 25, the vortex is controlled by variable pressure P.C. applied tangentially from a source 50, and the counter flow is bled from chamber 30 through an orifice 50 and is controlled by a valve 56. In a modification Fig. la (not shown) a separate pressure source provides the counter flow. In a further modification Fig. (not shown) the pressure source P.C. is dispensed with, the vortex is controlled by bodily rotation of the chamber, and a bias pressure is applied tangentially to the chamber to produce sensitive operation over points H-G on curve P.O. Fig. (not shown) whereby the device may be used as a rotation rate sensor.</p> |
