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    PISTON OF A HYDRAULIC PISTON MACHINE
    21.
    发明公开
    PISTON OF A HYDRAULIC PISTON MACHINE 审中-公开

    公开(公告)号：US20230279947A1

    公开(公告)日：2023-09-07

    申请号：US18173132

    申请日：2023-02-23

    Applicant: Danfoss A/S

    Inventor： Stig Kildegaard Andersen ,  Frank Holm Iversen ,  Tommi Kolb

    IPC: F16J1/04 ,  F16L27/04

    CPC classification number: F16J1/04 ,  F16L27/04

    Abstract: A piston (1) having a piston shaft (2), a ball head (3) at one end of the piston shaft (2), and a slider shoe (4) mounted to the ball head (3), wherein the ball head (3) has a through channel (5), the slider shoe (4) has a sliding surface (6) and a through hole (7) in communication with an end of the through channel (5), and a plastic material (8) is arranged in a gap between the slider shoe (4) and the ball head (3) and forms an inner coating (9) of the through hole (7). The production of such a piston should be facilitated. To this end a sealing surface (14) is arranged at the end of the through channel (5) wherein the sealing surface (14) surrounds the opening of the through channel (5) into the through bore (7) and an inner diameter of the sealing surface (14) is smaller than an inner diameter of the inner coating (9) of the through bore (7).

    VALVE PLATE ASSEMBLY
    22.
    发明申请
    VALVE PLATE ASSEMBLY 有权

    公开(公告)号：US20210190066A1

    公开(公告)日：2021-06-24

    申请号：US17039210

    申请日：2020-09-30

    Applicant: Danfoss A/S

    Inventor： Stig Kildegaard Andersen ,  Frank Holm Iversen

    IPC: F04B53/10

    Abstract: A valve plate assembly (1) of a hydraulic axial piston machine is described, the valve plate assembly comprising a wear plate (2) made of a ceramic material surrounded by a compression ring (4). Such a valve plate assembly should be produced and maintained in a cost-effective manner. To this end, the wear plate (2) is connected to a support plate (3) by means of the compression ring (4).

    Hydraulic machine
    23.
    发明授权
    Hydraulic machine 有权

    公开(公告)号：US11035351B2

    公开(公告)日：2021-06-15

    申请号：US16254955

    申请日：2019-01-23

    Applicant: Danfoss A/S

    Inventor： Stig Kildegaard Andersen ,  Georg Herborg Enevoldsen ,  Sveinn Porarinsson

    IPC: F04B11/00 ,  F04B1/20 ,  F04B1/2014 ,  F03C1/06 ,  F04B1/2021 ,  F01B3/00

    Abstract: A hydraulic machine is described comprising a first part (1, 4) and a second part (7, 8), wherein the first part (1, 4) and the second part (7, 8) are movable relatively to each other in abutting relation, the first part (1, 4) comprises a pressure chamber (2) having a pressure chamber opening (6) in a contact face (5) contacting a sealing face (9) of the second part (7, 8), the second part (7, 8) comprises a low pressure area (10) connected to a low pressure opening (11) in the sealing face (9) and a high pressure area (12) connected to a high pressure opening (13) in the sealing face (9), wherein during a movement of the first part (1, 4) with respect to the second part (7, 8) in a moving direction (14) the pressure chamber opening (6) comes alternatingly in overlap with the low pressure opening (11) and the high pressure opening (13). Such a machine should be flexible in operation with low risk of damages caused by cavitation. To this end a throttling channel (15) in the second part (7, 8) connects the low pressure area (10) with an area in the sealing face (9) in moving direction in front of the low pressure opening (11).

    HYDRAULIC MACHINE
    26.
    发明申请
    HYDRAULIC MACHINE 审中-公开
    液压机

    公开(公告)号：US20160377079A1

    公开(公告)日：2016-12-29

    申请号：US15187982

    申请日：2016-06-21

    Applicant: Danfoss A/S

    Inventor： Stig Kildegaard Andersen ,  Poul Erik Hansen ,  Erik Haugaard

    IPC: F04C15/00 ,  F16J15/16 ,  F04B53/00

    CPC classification number: F04C15/0007 ,  F04B1/0408 ,  F04B1/0448 ,  F04B1/124 ,  F04B49/10 ,  F04B53/00 ,  F04B53/143 ,  F15B13/0828 ,  F15B15/12 ,  F15B15/1452 ,  F15B15/1461 ,  F16J1/09 ,  F16J15/16

    Abstract: A hydraulic machine is described having a first part (2) and a second part (3) moveable relative to said first part (3), one of said first part (2) and said second part (3) having a first land (9) resting against the other one of said second part (3) and said first part (2), having a predetermined first height (H1), and being arranged between a high pressure area (7) and a low pressure area (8). Such a machine should have a long working life. To this end a second land (10) having a predetermined second height (H2) smaller than said first height (H1) is located adjacent to said first land (9).

    Abstract translation: 描述了一种具有第一部分（2）和第二部分（3）的液压机械，所述第一部分（2）和第二部分（3）相对于所述第一部分（3）可移动，所述第一部分（2）和所述第二部分（3）中的一个具有第一平台 ）抵靠所述第二部分（3）和所述第一部分（2）中的另一个，具有预定的第一高度（H1），并且布置在高压区域（7）和低压区域（8）之间。 这样的机器应该有很长的使用寿命。 为此，具有小于所述第一高度（H1）的预定第二高度（H2）的第二平台（10）位于所述第一平台（9）附近。

    HYDRAULIC MACHINE ARRANGEMENT
    27.
    发明申请
    HYDRAULIC MACHINE ARRANGEMENT 审中-公开
    液压机械装置

    公开(公告)号：US20160377070A1

    公开(公告)日：2016-12-29

    申请号：US15187940

    申请日：2016-06-21

    Applicant: Danfoss A/S

    Inventor： Stig Kildegaard Andersen ,  Poul Erik Hansen ,  Erik Haugaard

    IPC: F04B19/22

    CPC classification number: F04B19/22 ,  F03C1/06 ,  F04B1/12 ,  F04B49/10 ,  F04B2201/0803 ,  F04F13/00

    Abstract: A hydraulic machine arrangement (1) is described having a housing (5), a working section and a hollow inside said housing (5), a supply port arrangement LPin, HPin, LPout connected to said working area, and a leakage path (7) between said working section and said hollow. It should be possible to detect wear with simple means. To this end, said housing (5) is provided with a leakage port (8) connected to said hollow.

    Abstract translation: 一种液压机器装置（1）被描述为在所述壳体（5）内部具有壳体（5），工作部分和中空部分，连接到所述工作区域的供应端口布置LPin，HPin，LPout和泄漏路径（7 ）在所述工作部分和所述中空部分之间。 应该可以用简单的手段检测磨损。 为此，所述壳体（5）设置有连接到所述中空部的泄漏口（8）。

    Pressure exchanger
    28.
    发明授权
    Pressure exchanger 有权

    公开(公告)号：US12270422B2

    公开(公告)日：2025-04-08

    申请号：US17878991

    申请日：2022-08-02

    Applicant: Danfoss A/S

    Inventor： Stig Kildegaard Andersen ,  Poul Erik Hansen ,  Georg Herborg Enevoldsen ,  Kevin Evald

    IPC: F04F13/00

    Abstract: A pressure exchanger with a valve system includes a cylinder barrel (1), two valve plates (2) and two port plates (3, 4), wherein the cylinder barrel (1) has at least one cylinder (7) which accommodates a piston (8). The objective is to provide a pressure exchanger with low wear and a low maintenance effort. This objective is solved by a pressure exchanger including a piston (8) braking system and that the piston (8) includes a pressure relief arrangement.

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