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    • 3. 发明授权
    • Fume hood
    • 通风柜
    • US3941040A
    • 1976-03-02
    • US549349
    • 1975-02-12
    • Arthur W. Carlson
    • Arthur W. Carlson
    • B08B15/02F23J11/00
    • B08B15/023Y10S55/18
    • A fume hood includes a polygonal-shaped work top providing three or more equally-spaced work areas. A tubular column with a lower apertured portion is located at the center of the work top for exhausting heavier-than-air gases. A plenum located above the work top and supported by the tubular column is provided with slots located above the work openings for collecting and exhausting lighter-than-air gases. Transparent viewing screens permit inspection of all work locations from a single vantage point. A central pedestal is used to support the hood and to route plumbing and electrical conduits from the floor. The system is easily convertible between up-draft and down-draft exhaust without the need for special baffles.
    • 通风橱包括提供三个或更多等间隔工作区域的多边形工作台面。 具有较低开孔部分的管柱位于工作顶部的中心,用于排出比重大于空气的气体。 位于工作台上方并由管柱支撑的增压室设置有位于工作开口上方的用于收集和排出轻质空气气体的槽。 透明的查看屏幕允许从单个有利位置检查所有工作地点。 中央支座用于支撑发动机罩,并将管道和电气管道从地板上排出。 该系统可以在升压和下降排气之间轻松转换,而无需特殊的挡板。