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    Fluidic control valve with small displacement actuators
    2.
    发明授权
    Fluidic control valve with small displacement actuators 有权

    公开(公告)号：US11067187B2

    公开(公告)日：2021-07-20

    申请号：US16444563

    申请日：2019-06-18

    Applicant: Regents of the University of Minnesota

    Inventor： Nathan Paul Hagstrom ,  Thomas Richard Chase

    IPC: F16K31/00 ,  F16K1/42

    Abstract: A fluidic control valve configured to control a flow of fluid through a conduit includes a piezostack actuator, a seal plate having a sealing face, an orifice plate including a plurality of orifices, and a suspension connected to the seal plate. The piezostack actuator is configured to displace the seal plate along a longitudinal axis of the conduit between a closed position, in which the sealing face engages the orifice plate, seals the orifices of the orifice plate and closes the valve, and an open position, in which the seal plate is displaced from the orifice plate to open the valve. The suspension is configured to flex and adjust an orientation of the sealing face relative to the orifice plate during movement of the seal plate from the open position to the closed position.

    FLUIDIC CONTROL VALVE WITH SMALL DISPLACEMENT ACTUATORS
    3.
    发明申请
    FLUIDIC CONTROL VALVE WITH SMALL DISPLACEMENT ACTUATORS 审中-公开

    公开(公告)号：US20190301628A1

    公开(公告)日：2019-10-03

    申请号：US16444563

    申请日：2019-06-18

    Applicant: Regents of the University of Minnesota

    Inventor： Nathan Paul Hagstrom ,  Thomas Richard Chase

    IPC: F16K31/00 ,  F16K1/42

    Abstract: A fluidic control valve configured to control a flow of fluid through a conduit includes a piezostack actuator, a seal plate having a sealing face, an orifice plate including a plurality of orifices, and a suspension connected to the seal plate. The piezostack actuator is configured to displace the seal plate along a longitudinal axis of the conduit between a closed position, in which the sealing face engages the orifice plate, seals the orifices of the orifice plate and closes the valve, and an open position, in which the seal plate is displaced from the orifice plate to open the valve. The suspension is configured to flex and adjust an orientation of the sealing face relative to the orifice plate during movement of the seal plate from the open position to the closed position.

    PARTIAL STROKE FLUIDIC PUMP-MOTOR WITH HIGH MECHANICAL EFFICIENCY
    4.
    发明公开
    PARTIAL STROKE FLUIDIC PUMP-MOTOR WITH HIGH MECHANICAL EFFICIENCY 审中-公开

    公开(公告)号：US20230358217A1

    公开(公告)日：2023-11-09

    申请号：US18142104

    申请日：2023-05-02

    Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA

    Inventor： Thomas Richard Chase ,  Perry Yan-Ho Li ,  Michael B. Rannow

    IPC: F04B1/0452 ,  F04B1/0413 ,  F04B1/0531

    CPC classification number: F04B1/0531 ,  F04B1/0413 ,  F04B1/0452

    Abstract: A partial stroke pump or motor includes a piston coupled to a rotating shaft to evacuate a fluid within a cylinder during an upstroke. A latching check valve includes an actuator piston that is displaceable within a center cavity to bypass a blocking member in a bypass state. The actuator piston is driven by a latch supply line. A spool of a rotary valve selectively couples one of the low and pilot pressure supplies to the latch supply line over different timing angle ranges of the rotating shaft. Coupling of the pilot pressure to the latch supply line causes the bypass state. When operating as a pump, the bypass state causes the pressure in the cylinder to fall below the high pressure during part of the upstroke. When operating as a motor, the bypass state allows the fluid to be evacuated from the cylinder during the upstroke.

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