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    • 7. 发明授权
    • Method and apparatus for analyzing particulate matter
    • 分析颗粒物的方法和装置
    • US5983735A
    • 1999-11-16
    • US144716
    • 1998-09-01
    • Wieland E. Von BehrensRoger BourreeGeorge ChappellJames G. Young
    • Wieland E. Von BehrensRoger BourreeGeorge ChappellJames G. Young
    • G01N15/14G01N27/00
    • G01N15/1404
    • An apparatus for analyzing particulates including solutes in a sample liquid suspension in which the sample liquid suspension flows through an aperture into a first region of a reservoir containing particle free liquid to form a jet which entrains particle free liquid to ensheathe the jet. The jet passes through a muffler which includes a funnel and a throat into a second region of said reservoir where the particle free liquid and particulates are mixed. The throat is configured to prevent regurgitation of liquid from the second region back into the first region. A return passage connects the second region of the reservoir to the first region. The energy of the jet stream causes liquid to flow from the second region to the first region to provide particle free liquid to the first region. The return passage is configured or contains means to continuously mix the advancing liquid to prevent central streamers and the peripheral Coanda effect. This assures that during particle analysis only clean liquid reaches the first region, and that during cleanout particle free liquid admitted into the first region displaces all analyzed sample liquid without carryover.
    • 一种用于分析包括样品液体悬浮液中的溶质的微粒的装置,其中样品液体悬浮液通过孔流入含有无颗粒液体的储存器的第一区域中,以形成夹带无颗粒液体以使其入射的射流。 喷射器通过包括漏斗和喉部的消音器进入所述储存器的第二区域,其中混合无颗粒的液体和微粒。 喉部构造成防止液体从第二区域返回到第一区域。 返回通道将储存器的第二区域连接到第一区域。 喷射流的能量使液体从第二区域流动到第一区域,以向第一区域提供无颗粒液体。 返回通道配置或包含连续混合前进液体以防止中央拖缆和周边柯恩达效应的装置。 这确保在颗粒分析期间,仅清洁液体到达第一区域,并且在清洁期间允许进入第一区域的无颗粒液体置换所有分析的样品液体而不残留。