| 摘要 |
<p>1,155,215. Valves. AIRBORNE MFG. CO. 23 Aug., 1966 [9 Sept., 1965], No. 37695/66. Heading F2V. A valve comprises a closure member 49 carried by a diaphragm 46 which divides the housing into two chambers P, Q. The valve is loaded by a spring 61 away from its seat 55. Fluid flows from an inlet 44 through orifice 51 in the valve member 49 to the outlet 45, the area of orifice 51 being a minor portion of the area enclosed by the periphery of the valve member 49 at its planar surface. The chamber P is at all times in communication with the inlet 44 and the valve position is determined by the differential pressures action on the diaphragm 46, the spring 61 and the Bernoulli forces due to the flow between the valve member and seat. In a modification the seat is an orificed member carried by a diaphragm similar to the valve member, the outlet being radially from the chamber between the two diaphragms.</p> |
