SYSTEM FOR FLUID PUMP DOWN USING VALVES

    公开(公告)号:US20210254875A1

    公开(公告)日:2021-08-19

    申请号:US16790228

    申请日:2020-02-13

    Abstract: A valve system includes a motor, a first valve, a second valve, and a controller. The first valve is connected to the motor shaft and is rotatable to an open position, in which fluid flows through a first channel, and a close position, in which fluid is prevented from flowing through the first channel. The second valve is connected to the motor shaft and is rotatable to an open position, in which fluid flows through a second channel from a first end to a second end, and to a close position, in which fluid is prevented from flowing through the second channel. The controller is connected to the motor and can sequentially actuate the first valve and the second valve to create at least a first, second, third, and fourth position.

    Solenoid coil including bobbin with moisture barrier

    公开(公告)号:US10591081B2

    公开(公告)日:2020-03-17

    申请号:US15088939

    申请日:2016-04-01

    Abstract: A solenoid coil includes a coil winding that generates an electromagnetic force when a current is supplied to the coil winding. The solenoid coil also includes an electrically insulative bobbin made of an insulating material having a melting point. The bobbin includes a spool for supporting the coil winding. The spool includes a first end and a second end opposite the first end. The coil winding is positioned between the first end and the second end. The bobbin also includes a flange connected to one of the first end and the second end. A continuous ridge extends from the flange between an outer edge and studs to form a moisture barrier. The solenoid coil further includes an overmold enclosing at least a portion of the bobbin and the coil winding. The overmold bonds to the continuous ridge when the solenoid coil is heated to a temperature above the melting point.

    SOLENOID COIL INCLUDING BOBBIN WITH MOISTURE BARRIER

    公开(公告)号:US20170284555A1

    公开(公告)日:2017-10-05

    申请号:US15088939

    申请日:2016-04-01

    CPC classification number: F16K31/0675 H01F5/02 H01F5/06

    Abstract: A solenoid coil includes a coil winding that generates an electromagnetic force when a current is supplied to the coil winding. The solenoid coil also includes an electrically insulative bobbin made of an insulating material having a melting point. The bobbin includes a spool for supporting the coil winding. The spool includes a first end and a second end opposite the first end. The coil winding is positioned between the first end and the second end. The bobbin also includes a flange connected to one of the first end and the second end. A continuous ridge extends from the flange between an outer edge and studs to form a moisture barrier. The solenoid coil further includes an overmold enclosing at least a portion of the bobbin and the coil winding. The overmold bonds to the continuous ridge when the solenoid coil is heated to a temperature above the melting point.

    System for fluid pump down using valves

    公开(公告)号:US11306954B2

    公开(公告)日:2022-04-19

    申请号:US16790228

    申请日:2020-02-13

    Abstract: A valve system includes a motor, a first valve, a second valve, and a controller. The first valve is connected to the motor shaft and is rotatable to an open position, in which fluid flows through a first channel, and a close position, in which fluid is prevented from flowing through the first channel. The second valve is connected to the motor shaft and is rotatable to an open position, in which fluid flows through a second channel from a first end to a second end, and to a close position, in which fluid is prevented from flowing through the second channel. The controller is connected to the motor and can sequentially actuate the first valve and the second valve to create at least a first, second, third, and fourth position.

    Stepper motor control valves for refrigerant expansion and/or system controls

    公开(公告)号:US11619429B2

    公开(公告)日:2023-04-04

    申请号:US17220237

    申请日:2021-04-01

    Abstract: A valve includes a shaft having threads along at least a portion of a length of the shaft. A travel limit member (e.g., a coil spring, a washer, etc.) is disposed within one or more of the threads. The travel limit member may comprise a coil spring configured to be movable within the threads along the shaft when the shaft is rotated relative to the coil spring. The coil spring is configured to be operable for providing: a safety stall or hard stop for a fully open position of the valve when the coil spring is within the top thread and/or runs out of the threads after having traveled upwardly along the shaft within the threads; and a safety stall or hard stop for a fully closed position of the valve when the coil spring contacts a stop after having traveled downwardly along the shaft within the threads.

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