会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明专利
    • Apparatus for effecting the proportional delivery of combustible and combustion-supporting media to furnaces and the like
    • GB443259A
    • 1936-02-25
    • GB3356934
    • 1934-11-22
    • JAMES KEITHBLACKMAN COMPANY LTDGEORGE KEITH
    • F23D14/60
    • 443,259. Fluid-actuated valves. KEITH & BLACKMAN CO., Ltd., J., and KEITH, G., 27, Farringdon Avenue, Farring- don Street, London. Nov. 22, 1934, No. 33569. [Class 135] An apparatus for effecting proportional delivery of combustible and combustionsupporting media supplied by separate conduits to a consumer, comprises a manually adjustable obturator 7 in the gas conduit, the pressure across which is maintained a function of the rate of flow in the air conduit. This is accomplished by a butterfly valve 5 actuated by a diaphragm 3 subject on one side to the conduit pressure between two valves 5, 7 and on the other to air pressure under the control of a tubular-lift auxiliary valve 15. This valve, which is adapted to seat on one wall of the casing is connected to a pair of diaphragms 13, 14 arranged in a casing to provide four chambers 11, 12, 17 , 18. The chambers 11, 12 are connected by pipes 8, 9 either to pitot tubes in the air conduit 10 or to opposite sides of a throttling disc in that conduit. The chamber 171 is coupled by a pipe 17 to the gas conduit on the downstream side of the obturator 7. The chamber 18 is connected by pipe 19 with the chamber 20 behind the diaphragm 3 and by the tubular valve member with the chamber 11. The tubular valve member may be replaced by an external pipe connection.