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    Pilot-operated solenoid valve
    1.
    发明授权
    Pilot-operated solenoid valve 有权

    公开(公告)号：US10006558B2

    公开(公告)日：2018-06-26

    申请号：US15136342

    申请日：2016-04-22

    Applicant: CKD CORPORATION

    Inventor： Osamu Suematsu

    IPC: F16K31/06 ,  F16K27/02 ,  F16K31/40 ,  F16K31/42

    CPC classification number: F16K31/0641 ,  F16K27/0236 ,  F16K31/402 ,  F16K31/42

    Abstract: A pilot-operated solenoid valve includes a pilot valve unit having a fixed core and a movable core, and a passage block formed with a valve seat which a diaphragm valve element comes into contact or separates from. The pilot valve unit includes an NO port, a common port, and an NC port. The passage block is formed with an inlet port, an outlet port, a back chamber, an NO passage, a common passage, an NC passage an external exhaust passage, and an internal exhaust passage. The solenoid valve further includes a first or second metal ball to seal the external exhaust passage or the internal exhaust passage. The passage block includes a flat cover formed with a communication passage for communicating the recess with the common port.

    Pilot type solenoid valve
    2.
    发明授权
    Pilot type solenoid valve 有权

    公开(公告)号：US10125888B2

    公开(公告)日：2018-11-13

    申请号：US14797514

    申请日：2015-07-13

    Applicant: CKD CORPORATION

    Inventor： Osamu Suematsu ,  Akira Kishi

    IPC: F16K31/06 ,  F16K31/40 ,  F15B13/08 ,  F16K27/00 ,  F16K27/02 ,  F16K7/12 ,  F15B13/04

    Abstract: A pilot type solenoid valve includes a pilot valve unit and a passage block unit. The passage block unit has a rectangular parallelepiped shape including a pair of wide opposite surfaces, and four side surfaces surrounding the wide opposite surfaces. The four side surfaces include a first surface on which the pilot valve unit is attached, and a second surface formed with at least either an input port or an output port. A valve element is a diaphragm valve and arranged in parallel to the pair of wide opposite surfaces. The passage block unit includes a block body forming a valve chamber around a valve seat, and a flat cover. The flat cover includes a recess forming the back chamber of the diaphragm valve, and the flat cover has a flat cover communication path formed to provide communication between the recess and a common path of the pilot valve unit.

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