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    METHOD OF ACTUATION OF AN ALTERNATING TANGENTIAL FLOW DIAPHRAGM PUMP
    5.
    发明公开
    METHOD OF ACTUATION OF AN ALTERNATING TANGENTIAL FLOW DIAPHRAGM PUMP 审中-公开

    公开(公告)号：EP4091690A1

    公开(公告)日：2022-11-23

    申请号：EP22185529.9

    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.

    ACCURATE VOLUME DISPENSING USING PUMP AND FLOW SENSOR
    7.
    发明公开
    ACCURATE VOLUME DISPENSING USING PUMP AND FLOW SENSOR 审中-公开

    公开(公告)号：EP4036410A1

    公开(公告)日：2022-08-03

    申请号：EP22153769.9

    申请日：2022-01-27

    申请人： Masterflex, LLC

    发明人： PHAM, Phuong Le

    IPC分类号： F04B49/06 ,  F04B49/10 ,  F04B49/20 ,  F04B43/12 ,  F04B43/02

    摘要： Aspects are provided for positive displacement pumps and methods and systems for controlling such positive displacement pumps for accurate volume dispensing. The pump may run a calibration procedure to determine a mapping between a pump speed and a flow rate for a current configuration of the positive displacement pump, a tubing size, and a fluid characteristic. A pump controller may determine a pump motion profile based on the mapping. The pump motion profile includes an acceleration phase, a constant speed phase, and a deceleration phase such that a total volume pumped according to the pump motion profile and the mapping is equal to a target volume. The pump controller may determine an adjustment to the pump motion profile based on a constant flow rate measured during operation. The pump controller may decelerate the positive displacement pump according to the adjusted pump motion profile until the target volume is dispensed.

    KOMPRESSOR ZUM KOMPRIMIEREN VON GASEN
    9.
    发明公开
    KOMPRESSOR ZUM KOMPRIMIEREN VON GASEN 审中-公开

    公开(公告)号：EP3981982A1

    公开(公告)日：2022-04-13

    申请号：EP21200838.7

    申请日：2021-10-05

    申请人： Mehrer Compression GmbH

    发明人：

    IPC分类号： F04B9/02 ,  F04B27/00 ,  F04B35/04 ,  F04B39/12 ,  F04B49/06 ,  F04B49/12 ,  F04B49/20

    摘要： Die Erfindung betrifft einen Kompressor (10) zum Komprimieren von Gasen, mit mindestens einem Zylinder (12, 14), in dem ein Kolben (16, 18) geführt ist, wobei der Kolben (16, 18) mit einer Kolbenstange (20, 22) gekoppelt ist, wobei eine elektrische Antriebseinheit (24, 26) zum Antrieb der Kolbenstange (20, 22) vorgesehen ist und wobei eine Steuerung (30) zum Steuern der Antriebseinheit (24, 26) vorgesehen ist, wobei die Steuerung (30) derart eingerichtet ist, dass die Kolbengeschwindigkeit und die Anfangsposition und/oder die Endposition des Kolbens (16, 18) im Zylinder (12, 14) variierbar ist.