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    • 3. 发明授权
    • Air-sampling apparatus with easy walk-in access
    • 空气采样设备,方便进入
    • US4896547A
    • 1990-01-30
    • US272951
    • 1988-11-18
    • Michel D. ArneyGianfranco ZaccaiEugene K. AchterEdward J. BurkeGabor MiskolczyAin A. Sonin
    • Michel D. ArneyGianfranco ZaccaiEugene K. AchterEdward J. BurkeGabor MiskolczyAin A. Sonin
    • G01N1/00G01N1/02G01N1/22G01V9/00
    • G01N1/2273G01V9/007G01N2001/024G01N2001/2276
    • Disclosed is a walk-in inspection apparatus for active production of air samples containing vapors of explosives, drugs, or other substances carried by a person. The apparatus includes a U-shaped booth with an open end through which a person walks past walls which may contain a metal detector, then stands in front of a mesh screen facing a vertical end wall containing a vertical array of shaped funnels. Light-transmissive wall sections near the end wall help encourage entry of the person into the booth, and the light colored mesh screen draws attention of a person in the booth away from the darker funnels. In the collection of an air sample a blower outside the booth sucks a large volume of air around the person and horizontally through the funnels in the end wall and through ducts into a collection manifold for subsequent analysis. During sampling, infrared heaters in the end wall heat the clothing and skin of the person and many small nozzles extending through the end wall direct pulsed jets or puffs of air at the person to dislodge vapors, expel air from beneath clothing, and disrupt stagnant boundary layers of air near the person. Substantially all of the air drawn around the person is collected, and curved shapes of portions of the booth, funnels, and ducts provide smooth, low loss airflow to the collection manifold.
    • 公开了一种用于主动生产含有爆炸物,药物或人携带的其他物质的空气样本的步入式检查装置。 该装置包括具有开口端的U形展位,人们通过该展开端穿过可能包含金属检测器的墙壁,然后站立在面向垂直端壁的网格屏幕的前面,该垂直端壁包含垂直排列的成形漏斗。 端壁附近的透光墙部分有助于鼓励人员进入展位,浅色的网状屏幕可以吸引展位的人员远离暗处漏斗的注意力。 在收集空气样本时,展位外的鼓风机吸引人体周围的大量空气,水平地穿过端壁的漏斗,并通过管道进入收集歧管以进行后续分析。 在采样过程中,端壁的红外加热器加热了人的衣服和皮肤,许多小喷嘴延伸穿过端壁直接喷射或吹起空气,以排除蒸气,排出衣服下方的空气,并破坏停滞的边界 靠近人的空气层。 基本上收集人体周围的空气,展位,漏斗和管道部分的弯曲形状向收集歧管提供平滑,低损失的气流。