Sealing device for oil injection-type screw compressor

    公开(公告)号:US11536271B2

    公开(公告)日:2022-12-27

    申请号:US16758340

    申请日:2018-12-14

    申请人: Jae Young Lee

    摘要: A screw compressor of the present invention comprises: a housing having a compression chamber; male and female rotors provided in the compression chamber; a driving shaft for rotating the male and female rotors; and a seal cover across which the driving shaft is provided, and further includes: an oil chamber provided at the seal cover, and returning, to the compression chamber, oil having leaked into the driving shaft; and a breather for injecting external air into the oil chamber. Therefore, the breather is provided at the upper part of the oil chamber and an oil recovery line is provided at the lower part thereof so as to cause a pressure difference between the upper and lower parts of the oil chamber, such that the flow of the oil having leaked into the driving shaft is smoothly recovered in the oil recovery line.

    Highly reliable service port
    5.
    发明授权

    公开(公告)号:US11525520B2

    公开(公告)日:2022-12-13

    申请号:US15105820

    申请日:2013-12-18

    摘要: A port for use in introducing a fluid into an internal fluid chamber includes a plug bore, a valve disposed in the plug bore and a plug. The plug includes one or more seal grooves and a ring seal in each of the one or more seal grooves. The ring seal creates a seal between the plug and the plug bore. The port further includes a positive stop barrier that prevents the plug from being removed from the plug bore.

    Capacity control valve
    7.
    发明授权

    公开(公告)号:US11473683B2

    公开(公告)日:2022-10-18

    申请号:US17259138

    申请日:2019-08-07

    摘要: A capacity control valve includes a valve housing formed with a discharge port, a suction port, and first and second control ports, a rod arranged in the valve housing and driven by a solenoid, a CS valve 50 configured to control a fluid flow between the first control port and the suction port in accordance with a movement of the rod, and a DC valve configured to control a fluid flow between the second control port and the discharge port in accordance with the movement of the rod. In a non-energization state of the solenoid, the CS valve is closed and the DC valve is opened. As the energization of the solenoid becomes larger, the CS valve transitions from a closed state to an open state, and the DC valve is throttled from an open state and thereafter transitions to the open state.

    Systems and methods for piston check valves

    公开(公告)号:US11365820B2

    公开(公告)日:2022-06-21

    申请号:US17077549

    申请日:2020-10-22

    申请人: SCV Valve, LLC

    发明人: Sidney McCarra

    摘要: A piston check valve system includes a body including an upstream end and a downstream end, a bonnet secured to a proximal opening of the body, and a piston secured within the body, the piston being moveable between a closed position in which the piston rests upon a valve seat and an open position in which the piston is spaced away from the valve seat. The piston check valve system also includes a retainer configured to guide and retain the piston and to secure the valve seat within the body.

    Fluid valve and fluid connection system

    公开(公告)号:US11298294B2

    公开(公告)日:2022-04-12

    申请号:US16158523

    申请日:2018-10-12

    发明人: Tolga Aydin

    摘要: The invention relates to a fluid valve and fluid connection system, comprising a casing having a chamber with a first internal connection element and a first external connection element; comprising a first movable valve element in the chamber; and comprising an actuating element which has a fluid communication system with a second internal connection element and a second external connection element; wherein the first internal connection element cooperates with the second internal connection element and the valve element to establish or block a fluid connection between the first and second external connection elements.

    Adjustable check valve
    10.
    发明授权

    公开(公告)号:US11268627B1

    公开(公告)日:2022-03-08

    申请号:US17014864

    申请日:2020-09-08

    发明人: Anna Sarno

    IPC分类号: F16K15/00 F16K31/06 F16K15/03

    摘要: A check valve has an internal gate having an adjustable retention force, such that in the event that if the differential pressure between the upstream and downstream pressure changes, the force required to allow flow through the valve may be adjusted without removal of the valve from the piping system.