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    • 5. 发明授权
    • Down-flow chamber
    • 下流室
    • US3944405A
    • 1976-03-16
    • US418940
    • 1973-11-26
    • Francois Adriaan VAN CalsterenWillem Pieter Hiestand
    • Francois Adriaan VAN CalsterenWillem Pieter Hiestand
    • F24F7/06B01L1/00B08B15/02B25H1/20C12M1/00F24F3/16B01D46/00
    • B08B15/023B25H1/20F24F3/1607B08B2215/003Y10S55/29
    • A down-flow chamber in which, from a filter in the ceiling of a working room, a germfree and dustfree flow of air is directed downwardly to a working face that is surrounded by walls with exhaust openings for the flow of air at the edges and in which, at the front, a transparent wall is mounted. Between the lower edge of the transparent wall and an exhaust grid in front of the working face there is a vertical opening of such a height that arms can be put through the opening to be able to carry out operations in the working room, wherein at the lower edge of the transparent wall a flexible lid preferably of smooth plastics material is mounted that is hanging down and is substantially extending to the exhaust grid. Further, a device is provided on the chamber that prevents the lid from moving outwardly from the vertical plane through the opening.
    • 下流室,其中从工作室的天花板中的过滤器将无菌和无尘的空气流向下引导到工作面,该工作面被具有用于边缘空气流动的排气口的壁围绕, 其中,在前面安装有透明壁。 在透明壁的下边缘与工作面前方的排气格栅之间,有一个这样一个高度的垂直开口,这样一个高度使臂可以穿过开口,以便能够在工作室中进行操作,其中在 透明壁的下边缘是柔性盖,其优选地是平滑的塑料材料,其被垂直安装并且基本上延伸到排气栅格。 此外,在室上设置有防止盖从垂直平面通过开口向外移动的装置。