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    • 20. 发明授权
    • Forced air ducting flow control valve
    • 强制风管流量控制阀
    • US4558718A
    • 1985-12-17
    • US431726
    • 1983-06-03
    • James R. Garfield
    • James R. Garfield
    • F16K3/02F16K7/10F24F13/10F16K31/126
    • F16K3/0245F16K7/10F24F13/10Y10T137/87981
    • A device for controlling air or heat flow within an air passageway ducting, or other air passageways, having low cost, high efficiency and easily installed, is in the form of a Force Air Ducting Flow Control Valve. The valve has a rubber or synthetic rubber bladder, controlled by a telescoping piston, which, using compressed air from an outside source, moves the bladder across the air passageway and causes the bladder to fill with compressed air and expand until constrained by an outer metal or plastic air permeable case, thus forming an efficient obstruction in the air passageway on two sides of the bladder. Between the bladder and the outer case is a blanket of flexible material, preferably an insulator such as "space blanket," which is attached, in the middle to the end of the bladder and on the ends to spring loaded cylinders in such a way, as to protect and insulate the bladder when it is against the case, and to provide pressure to move the bladder and telescoping piston from causing an obstruction in the air passageway, when the air pressure within the bladder and telescoping piston is equal to atmospheric pressure.
    • 用于控制空气通道管道内的空气或热流的装置或其它空气通道,其具有低成本,高效率和容易安装的形式,其形式为力空气管道流量控制阀。 该阀具有由伸缩活塞控制的橡胶或合成橡胶囊,其使用来自外部源的压缩空气将气囊移动穿过空气通道,并使气囊充满压缩空气并膨胀直至被外部金属 或塑料透气的壳体,从而在膀胱两侧的空气通道中形成有效的阻塞。 在囊和外壳之间是柔性材料的毯子,优选地是诸如“空间毯”的绝缘体,其以中间到囊的端部并且在端部附接到弹簧加载的圆柱体上, 以便当气囊抵靠在壳体上时保护和绝缘膀胱,并且当气囊和伸缩活塞内的空气压力等于大气压力时,提供压力以使气囊和伸缩活塞移动,从而造成空气通道中的阻塞。