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    SELECT VALVE FOR LIQUID CHROMATOGRAPHY SYSTEMS
    1.
    发明公开
    SELECT VALVE FOR LIQUID CHROMATOGRAPHY SYSTEMS 审中-公开
    液相色谱系统的换档阀

    公开(公告)号：EP2788639A4

    公开(公告)日：2015-09-02

    申请号：EP12856225

    申请日：2012-12-07

    申请人： WATERS TECHNOLOGIES CORP

    发明人： JOUDREY KURT D ,  SOK MARUTH

    IPC分类号： F16K11/074 ,  B01D15/40 ,  G01N30/32 ,  G01N30/34

    CPC分类号： B01D15/14 ,  B01D15/40 ,  F04B49/22 ,  F16K11/02 ,  G01N30/02 ,  G01N30/20 ,  G01N30/32 ,  G01N30/34 ,  G01N2030/027 ,  Y10T137/85986 ,  Y10T137/86517

    摘要： A liquid chromatography system includes a pumping system with a selector valve in fluidic communication with a pump inlet. The selector valve switches between a first position, in which the selector valve fluidically couples a solvent reservoir to the pump inlet, and a second position, in which the selector valve fluidically couples a pressurized source of liquefied carbon dioxide (for example) to the pump inlet. The liquid chromatography system can perform as a HPLC system (or as an UPLC system) when the selector valve is in the first position and as a CO2-based chromatography system when the selector valve is in the second position. The selector valve can have a third position in which both the fluidic pathway between the solvent reservoir and the pump inlet and the fluidic pathway between the pressurized source and the pump inlet are blocked. This shut-off position advantageously facilitates system maintenance.

    PASSIVE COLUMN PRE-HEATER FOR USE IN CHROMATOGRAPHIC SYSTEMS
    2.
    发明公开
    PASSIVE COLUMN PRE-HEATER FOR USE IN CHROMATOGRAPHIC SYSTEMS 审中-公开

    公开(公告)号：EP3132258A4

    公开(公告)日：2017-11-29

    申请号：EP15779859

    申请日：2015-04-10

    申请人： WATERS TECHNOLOGIES CORP

    发明人： SHREVE JOSHUA A ,  JOUDREY KURT D

    IPC分类号： G01N30/30

    CPC分类号： G01N30/30 ,  G01N1/44 ,  G01N2030/3007

    摘要： A passive pre-heater assembly includes a thermally conductive heat-spreading block and a plurality of passive pre-heaters in thermally conductive communication with the heat-spreading block. The plurality of the pre-heaters exchanges heat with the thermally conductive heat-spreading block. Each pre-heater includes a thermally conductive base in thermal communication with the heat-spreading block, and a plurality of thermally conductive fins is in thermal communication with the thermally conductive base. The plurality of fins of each pre-heater exchanges heat convectively with ambient air and conductively with the thermally conductive base of that pre-heater. A given one of the passive pre-heaters further comprises a tube in thermally conductive contact with the thermally conductive base of the given passive pre-heater. The thermally conductive heat-spreading block exchanges heat with a fluid passing through the tube of the given passive pre-heater.