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    Filter having a filter bypass valve, and filter cartridge therefor
    31.
    发明授权
    Filter having a filter bypass valve, and filter cartridge therefor 有权

    公开(公告)号：US10159918B2

    公开(公告)日：2018-12-25

    申请号：US15557657

    申请日：2016-03-08

    Applicant: HENGST SE & CO. KG

    Inventor： Wilhelm Ardes

    IPC: B01D29/15 ,  B01D35/147 ,  B01D35/153 ,  B01D35/30 ,  F01M1/10

    Abstract: A filter comprising a filter housing, a removable housing cover closing the housing during operation, a liquid inlet, a filtered liquid outlet, an exchangeable filter cartridge separating a raw side of the filter from a clean side, and a filter bypass valve comprising a valve seat and a valve body movably guided relative to the valve seat and biased in a closed direction. The valve seat is fixed in or on the housing cover, the valve body and a spring pre-loading the valve body in the closed direction are guided in or on the housing cover and are fixed to the cover. The filter cartridge has a spring support, such that when the cartridge is installed in the filter and the housing cover is attached to the housing, the end of the spring facing away from the valve body is supported and pre-stressed via the spring support.

    LIQUID FILTER WITH A CENTRAL DISCHARGE CHANNEL AND FILTER UNIT FOR A LIQUID FILTER
    32.
    发明申请
    LIQUID FILTER WITH A CENTRAL DISCHARGE CHANNEL AND FILTER UNIT FOR A LIQUID FILTER 有权
    液体过滤器中央排放通道和过滤器单元的液体过滤器

    公开(公告)号：US20150157968A1

    公开(公告)日：2015-06-11

    申请号：US14411424

    申请日：2013-06-21

    Applicant: Hengst SE & Co. KG

    Inventor： Wilhelm Ardes

    IPC: B01D35/30 ,  F01M11/03 ,  B01D35/00 ,  B01D35/147

    CPC classification number: B01D35/306 ,  B01D29/21 ,  B01D35/005 ,  B01D35/147 ,  B01D35/153 ,  B01D35/16 ,  B01D2201/4007 ,  B01D2201/4023 ,  B01D2201/4046 ,  B01D2201/4084 ,  F01M11/03 ,  F01M2011/031

    Abstract: A liquid filter having a housing with a removable screw lid and an interchangeable filter unit, the housing having a discharge channel, wherein a closure valve which when installed is fixed to the housing, is axially adjustable between a closed position when the filter unit is installed and the lid is closed, and an open position when the lid is detached and the filter unit is removed, and wherein releasable coupling elements are provided between the lid or filter unit and the valve. The coupling elements engage to transmit torque and tensile forces, by rotation in the loosening direction of the lid, for as long as a seal of the valve which exerts a braking moment on the valve is located in the sealing seat. The coupling elements disengage when the seal has departed from the sealing seat and the valve is thereby freely rotatable about its longitudinal axis.

    Abstract translation: 一种具有壳体的液体过滤器，其具有可移除的螺钉盖和可互换的过滤器单元，所述壳体具有排放通道，其中当安装时固定到壳体上的关闭阀在安装过滤器单元的关闭位置之间可轴向调节 并且盖被关闭，并且当盖被拆卸并且过滤器单元被移除时的打开位置，并且其中可拆卸的联接元件设置在盖或过滤器单元和阀之间。 只要在阀上施加制动力矩的阀的密封件位于密封座中，联接元件通过沿盖的松动方向旋转来传递扭矩和拉力。 当密封已经从密封座离开并且阀因此可以围绕其纵向轴线自由旋转时，联接元件脱离接合。

    CABIN AIR FILTER WITH POLARISATION
    33.
    发明申请
    CABIN AIR FILTER WITH POLARISATION 有权

    公开(公告)号：US20250083155A1

    公开(公告)日：2025-03-13

    申请号：US18807534

    申请日：2024-08-16

    Applicant: HENGST SE

    Inventor： Stefan Robert ,  Andreas Borchard ,  Martin Rölver ,  Tom Klaver

    IPC: B03C3/68 ,  B03C3/38 ,  B03C3/62 ,  B03C3/64 ,  B60H3/00

    Abstract: A gas filter that includes a filter medium configured to filter a gas flow propagating from an upstream facing side through the filter medium to a downstream facing side. The filter medium includes a capacitor with a first electrode, a second electrode, and a dielectric medium. The gas filter also includes a first electrical contact and a second electrical contact such that the first electrical contact is electrically connected via a first resistor to a branching point and the second electrical contact is electrically connected via a second resistor the same branching point. Further, the first electrode is preferably electrically connected to such branching point and the second electrode is preferably electrically connected to the second electrical contact.

    Fluid filter with a valve unit and filter element for use in the fluid filter
    34.
    发明授权
    Fluid filter with a valve unit and filter element for use in the fluid filter 有权

    公开(公告)号：US11596883B2

    公开(公告)日：2023-03-07

    申请号：US15755806

    申请日：2016-08-23

    Applicant: Hengst SE

    Inventor： Wilhelm Ardes

    IPC: B01D35/147 ,  B01D35/153 ,  B01D29/15 ,  F16K7/00 ,  F01M11/03

    Abstract: A fluid filter comprises a housing, a fluid inlet and a fluid outlet, a filter element separating a raw side and a clean side from one another, and a valve unit. The valve unit comprises a valve plate arranged concentrically in the housing and having the shape of a circular ring disc, having valve openings and a flexible circular-ring-disc-shaped valve membrane arranged on the valve plate. The filter element comprises an axially protruding pressure-exerting ring shaped as a circumferential annular collar on the end face thereof facing the valve unit when installed. When installed in the housing, the filter element, with an end face of the pressure-exerting ring, presses the valve membrane axially onto the valve plate. The valve membrane, with the membrane region thereof pressed by the pressure-exerting ring onto the valve plate, forms a seal separating the raw side from the clean side of the fluid filter.

    Pressure-limiting valve
    35.
    发明授权
    Pressure-limiting valve 有权

    公开(公告)号：US11428130B2

    公开(公告)日：2022-08-30

    申请号：US16804040

    申请日：2020-02-28

    Applicant: HENGST SE ,  HENGST FILTER SYSTEMS (KUNSHAN) CO. LTD.

    Inventor： Simon Berger ,  Tom Berger

    IPC: F01M13/04 ,  F16K17/04 ,  F16K17/08

    Abstract: A pressure-limiting valve for use in a gas line conveying a gas that includes aerosols. The pressure-limiting valve has a movable valve body, a valve seat, and a compressible coalescing medium placed therebetween. The valve body has passages and nozzle openings and the valve seat has through-holes. In the closed position, the valve functions in separator mode and in the fully open position, in impactor mode. The pressure-limiting valve according to the invention provides a more sensitive response to varying flow conditions, due to deviating surface profiles of the valve seat and coalescing medium, which provide intermediate stages of separator and impactor modes as a function of the volume of flow.

    Filter insert of a fuel filter, filter insert, and fuel filter
    37.
    发明授权
    Filter insert of a fuel filter, filter insert, and fuel filter 有权

    公开(公告)号：US11130079B2

    公开(公告)日：2021-09-28

    申请号：US16080951

    申请日：2017-02-23

    Applicant: HENGST SE

    Inventor： Sieghard Pietschner ,  Moritz Dorschel ,  Marcus Wegmann ,  Andreas Schüttpelz

    IPC: B01D29/21 ,  B01D39/16 ,  B01D39/18 ,  B01D17/04 ,  B01D36/00 ,  B01D29/58

    Abstract: A filter material for a filter insert of a fuel filter for separating solid particles and water droplets from fuel. The filter material comprises a particle filter medium layer through which the fuel flows first during use and at least one coalescer medium layer which lies on the particle filter medium layer on the outflow side. At least one coalescer medium layer is gradient-free in the flow direction with respect to the geometrical structure and/or physical properties and/or chemical properties of the layers. The at least one coalescer medium layer has a thickness measured in the flow direction which is maximally as large as the thickness of the particle filter medium layer measured in the flow direction.

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