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    PUMPING CASSETTE
    2.
    发明公开
    PUMPING CASSETTE 审中-实审

    公开(公告)号：EP4302818A3

    公开(公告)日：2024-03-27

    申请号：EP23212552.6

    申请日：2008-02-26

    申请人： DEKA Products Limited Partnership

    发明人： Demers, Jason A. ,  Wilt, Michael J. ,  Grant, Kevin L. ,  Dale, James D. ,  Tracey, Brian

    IPC分类号： A61M1/36 ,  A61M39/10 ,  A61M1/14 ,  A61M1/16 ,  A61M1/28 ,  A61M60/113 ,  A61M60/268 ,  A61M60/837 ,  A61M60/427 ,  A61M60/847 ,  A61M60/849 ,  A61M60/851 ,  F04B43/073 ,  F04B45/053 ,  A61M60/37

    摘要： A membrane-based valve comprising a top plate (214), a bottom plate (216) and a midplate (204) located between the top plate and the bottom plate, with a flexible membrane (202) interposed between the top plate and midplate. The top plate includes a pneumatic port (208) configured to deliver pneumatic pressure to the membrane. The midplate includes an inlet (218) and an outlet (220) in fluid communication with the membrane. The valve further comprises a valve seat (210). The bottom plate further comprises fluid paths defining the inlet and the outlet. The membrane and top plate define a control gas chamber (212), and the membrane and midplate define a valving chamber (206), the inlet and outlet in communication with the valving chamber (206) via holes formed through the midplate (204). A thickened rim (222) of the membrane is configured to be held in a groove (224) in the midplate. A cross-sectional shape of a part of the membrane comprises a first region with a cross-sectional curvature in a first direction that is a direction toward the top plate and a second region located within the first region with a cross-sectional curvature in a second direction opposite the first direction, and the pneumatic pressure from the pneumatic port is configured to force the membrane against the valve seat to close the valve, or draw the membrane away from the valve seat to open the valve.

    METHOD OF ACTUATION OF AN ALTERNATING TANGENTIAL FLOW DIAPHRAGM PUMP
    4.
    发明公开
    METHOD OF ACTUATION OF AN ALTERNATING TANGENTIAL FLOW DIAPHRAGM PUMP 审中-公开

    公开(公告)号：EP4112151A1

    公开(公告)日：2023-01-04

    申请号：EP22185523.2

    申请日：2018-08-02

    申请人： Repligen Corporation

    发明人： PAVLIK, Rudolf

    IPC分类号： B01D29/00 ,  C12M1/00 ,  F04B43/00 ,  F04B49/00 ,  F04B23/02 ,  F04B53/20 ,  F04B43/073 ,  F04B49/06 ,  F04B49/20

    摘要： A control unit includes a first connector configured to connect a proportional pressure regulator to a positive pressure supply and a second connector configured to connect the proportional pressure regulator to a negative pressure supply. The control unit further includes at least one sensor configured to detect an amount of air flow (volume per unit of time), positive or negative, within an air flow line connected to an output of the proportional pressure regulator, and a third connector configured to connect the air flow line to an air side of a diaphragm. Additionally, the control unit includes a controller programmed to control at least an opening and closing function of the proportional pressure regulator to attain a desired amount of air flow (volume per unit of time), positive or negative, within the air flow line.

    MEHRFACHMEMBRANPUMPE
    6.
    发明公开
    MEHRFACHMEMBRANPUMPE 审中-公开

    公开(公告)号：EP4050213A1

    公开(公告)日：2022-08-31

    申请号：EP22152137.0

    申请日：2022-01-19

    申请人： Lutz Pumpen GmbH

    发明人： Nasu, Takumi ,  Ries, Alexander ,  Getze, Andrej

    IPC分类号： F04B43/073 ,  F01L25/08

    摘要： Es sind bereits druckluftbetriebene Mehrfachmembranpumpen bekannt, bei denen eine Steuerung der Ventile über ein Schieberelement erfolgt. Dieses wird magnetisch betätigt, wobei ein mechanischer Eingriff in diese Betätigung nicht erfolgt. Dies führt dazu, dass eine Kraftbeaufschlagung nur in einem geringen Maß möglich ist, und daher insbesondere aufgrund von Haftreibung der Ventildichtung möglicherweise nicht ausreicht.
    Die Erfindung sieht daher eine hybride Lösung vor, welche sowohl eine mechanische Betätigung eines für die Ventilsteuerung vorgesehenen Ventilkolbens, als auch eine magnetische Überwindung eines möglicherweise von dem Ventilkolben und dem die Membranen der Mehrfachmembranpumpe betätigenden Membrankolben gemeinsam erreichten Totpunkts ermöglicht.