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    Valve
    1.
    发明申请
    Valve 有权

    公开(公告)号：US20250163941A1

    公开(公告)日：2025-05-22

    申请号：US18843627

    申请日：2024-03-01

    Applicant: HYDAC Fluidtechnik GmbH

    Inventor： Peter Bruck ,  Christian Groh ,  Frank Schulz ,  Andre Jäger ,  Lennard Günther ,  Jan Frederik Lübbert

    IPC: F15B13/043 ,  F16K31/42

    Abstract: The disclosure relates to a valve, e.g., a proportional valve, comprising a main piston for actuating a main volumetric flow and a pilot piston for actuating a pilot volumetric flow. The main piston and the pilot piston are guided in a valve housing in a longitudinally movable manner, and the pilot piston can be actuated using a magnetic device. The position of the main piston can be set using the pilot piston which, based on the movement position thereof, signals the fluid pressure acting on the main piston into a pilot chamber via a fluidic connection or cuts of the fluid connection and connects the pilot chamber to a tank or low-pressure side via another fluidic connection into which a valve is introduced that closes in a leak-proof manner as soon as a fluidic connection is produced between the main piston and the pilot chamber.

    SYSTEM FOR IMPROVING THE ENERGY EFFICIENCY IN HYDRAULIC SYSTEMS, PISTON ACCUMULATOR AND PRESSURE ACCUMULATOR PROVIDED FOR SUCH A SYSTEM
    2.
    发明申请
    SYSTEM FOR IMPROVING THE ENERGY EFFICIENCY IN HYDRAULIC SYSTEMS, PISTON ACCUMULATOR AND PRESSURE ACCUMULATOR PROVIDED FOR SUCH A SYSTEM 有权
    提高液压系统能源效率的系统，为这种系统提供的活塞式累加器和压力蓄能器

    公开(公告)号：US20140318115A1

    公开(公告)日：2014-10-30

    申请号：US13261904

    申请日：2012-12-03

    Applicant: HYDAC FLUIDTECHNIK GMBH

    Inventor： Frank Schulz ,  Peter Bruck

    IPC: F15B21/14 ,  E02F9/22 ,  F15B1/24

    CPC classification number: F15B21/14 ,  E02F9/2217 ,  F15B1/024 ,  F15B1/24 ,  F15B2201/205 ,  F15B2201/31 ,  F15B2201/413 ,  F15B2201/51 ,  F15B2211/20569 ,  F15B2211/212 ,  F15B2211/625 ,  F15B2211/6309 ,  F15B2211/633 ,  F15B2211/6336 ,  F15B2211/7052 ,  F15B2211/88 ,  Y02E60/15

    Abstract: The invention relates to a system for improving the energy efficiency in hydraulic systems, comprising an actuator (49) which, in an operating state, operates as a consumer of hydraulic energy and, in a different operating state, as a generator of hydraulic energy, and a hydraulic accumulator (1) which, when in an operating state of the actuator (49), can be charged by the same for storing energy and, when in a different operating state, can be discharged for delivering energy to the actuator (49). The invention is characterized in that at least one hydraulic accumulator in the form of an adjustable hydropneumatic piston accumulator (1) is provided, in which a are formed a plurality of pressure chambers (19, 21, 23, 25) which adjoin effective surfaces (11, 13, 15, 17) of different sizes on the fluid side of the accumulator piston (5), and an adjusting arrangement (51) is provided which connects a selected pressure chamber (19, 21, 23, 25) or a plurality of selected pressure chambers (19, 21, 23, 25) of the piston accumulator (1) to the actuator (49) as a function of the pressure level that prevails respectively on the gas side of the piston accumulator (1) and on the actuator (49).

    Abstract translation: 本发明涉及一种用于提高液压系统能量效率的系统，该系统包括致动器（49），该致动器在操作状态下作为液压能量消耗器运行，并且在不同的运行状态下作为液压能量发生器， 以及液压蓄能器（1），当处于致动器（49）的操作状态时，液压蓄能器（1）能够通过其被充电以存储能量，并且当处于不同的操作状态时，可以将其释放以向致动器（49 ）。 本发明的特征在于，提供至少一个液压蓄能器（1）的可调式液压活塞蓄能器（1），其中a形成有多个与有效表面相邻的压力室（19,21,23,25） 在蓄能器活塞（5）的流体侧上具有不同尺寸的阀（11,13,15,17），并且提供一个调节装置（51），其连接选定的压力室（19,21,23,25）或多个 （1）的活塞蓄能器（1）的选定的压力室（19,21,23,25）与致动器（49）之间的压力水平的函数分别对应于活塞蓄能器（1）的气体侧上的压力水平 致动器（49）。

    Valve device
    3.
    发明授权
    Valve device 有权

    公开(公告)号：US10458556B2

    公开(公告)日：2019-10-29

    申请号：US15540280

    申请日：2015-12-10

    Applicant: HYDAC FLUIDTECHNIK GMBH

    Inventor： Frank Schulz

    IPC: F16K11/07 ,  F16K31/06

    Abstract: A valve device has a valve housing and a main piston (4) arranged in an axially slidable manner in a piston bore of the valve housing (2). A first consumer connection (A) and a second consumer connection (B) can be alternately connected to a pressure connection (P) and a tank connection (T1, T2) by the action of a first magnetic actuating system (6) and a second magnetic actuating system (8) with two pilot pistons (14, 16). In an actuated state of the respective pilot piston (14, 16), the main piston (4) follows the movement of the pilot piston (14, 16) due to the force ratio adjusting itself to actuate the fluid-carrying connection between the pilot chamber (10, 12) of the pilot piston (14,16) and the assignable tank connection (T1, T2) such that pilot oil flows.

    System for improving the energy efficiency in hydraulic systems
    6.
    发明授权
    System for improving the energy efficiency in hydraulic systems 有权

    公开(公告)号：US10323657B2

    公开(公告)日：2019-06-18

    申请号：US13261912

    申请日：2012-11-09

    Applicant: Hydac Fluidtechnik GmbH

    Inventor： Frank Schulz ,  Peter Bruck

    IPC: F15B1/02 ,  F15B3/00 ,  F15B21/14 ,  F15B11/032 ,  F15B11/072 ,  F15B1/24

    Abstract: A system for hydraulic systems includes a working cylinder (58) which operates as a consumer of hydraulic energy or as a generator of hydraulic energy. A hydraulic accumulator (1) can be charged by the working cylinder for storing energy and can be discharged for delivering energy to the working cylinder (58). One hydraulic accumulator is provided in the form of an adjustable hydropneumatic piston accumulator (1), in which with a plurality of pressure chambers (19, 21, 23, 25) adjoining effective surfaces (11, 13, 15, 17) of different sizes are on the fluid side of the accumulator piston (5). An adjusting arrangement (51) connects a selected pressure chamber (19, 21, 23, 25) or a plurality of selected pressure chambers (19, 21, 23, 25) of the piston accumulator (1) to the working cylinder (58) as a function of the pressure level that prevails respectively on the gas side of the piston accumulator (1) and on the working cylinder (58).

    Pilot-Control Electromagnetic Valve
    8.
    发明申请
    Pilot-Control Electromagnetic Valve 有权

    公开(公告)号：US20250137548A1

    公开(公告)日：2025-05-01

    申请号：US18836960

    申请日：2023-01-10

    Applicant: HYDAC Fluidtechnik GmbH

    Inventor： Peter Bruck ,  Christian Groh ,  Frank Schulz ,  Andre Jäger ,  Lennard Günther ,  Jan Frederik Lübbert

    IPC: F16K31/40

    Abstract: The disclosure relates to a valve, comprising a main plunger for controlling a main volume flow and comprising a pilot-control plunger for controlling a pilot-control volume flow. The main and pilot-control plungers are longitudinally moveably guided in a valve housing and the pilot-control plunger can be actuated by a magnetic device. The position of the main plunger can be adjusted by the pilot-control plunger in that a fluid pressure at the main plunger is communicated, via a fluid connection, into the pilot control chamber containing the pilot-control piston, which keeps the main plunger in its closed position blocking the main volume flow when the magnetic device is not actuated. When the magnetic device is actuated, the pilot-control plunger moves into a position in which the fluid pressure falls in the pilot-control chamber until the main plunger moves into an open position controlling the main volume flow.

    Pressure compensator valve
    9.
    发明授权
    Pressure compensator valve 有权

    公开(公告)号：US11268544B2

    公开(公告)日：2022-03-08

    申请号：US16643892

    申请日：2018-09-05

    Applicant: HYDAC FLUIDTECHNIK GMBH

    Inventor： Peter Bruck ,  Frank Schulz

    IPC: F15B13/04 ,  B66F9/22 ,  F15B11/05 ,  F15B13/00

    Abstract: A valve, in particular for use as a pressure compensator or maintenance-type component (38) in hydraulically actuated hoisting devices (2), has a valve housing (54) with a control port (40), a fluid inlet (64) and a fluid outlet (66). A regulating piston (68) is longitudinally displaceably in the valve housing (54) and acts against an energy storage device (70) in the form of a compression spring, bringing the regulating piston (68) into positions forming a fluid-conveying connection between the fluid inlet (40) and the fluid outlet (66) or blocking this connection by a control pressure existing at the control port (40). A first orifice (88) in the regulating piston (68) connects the control port (40) to a receiving space (62) for the energy storage device (70) in a fluid-conveying manner. A second orifice (90) is in an intermediate part (72) in the valve housing (54). The receiving space (62) can be connected to a compensating chamber (92), which connected to the fluid outlet (66) in a fluid-conveying manner (98).

    Pilot-operated directional control valve
    10.
    发明授权
    Pilot-operated directional control valve 有权

    公开(公告)号：US10400912B2

    公开(公告)日：2019-09-03

    申请号：US15520107

    申请日：2015-10-14

    Applicant: HYDAC FLUIDTECHNIK GMBH

    Inventor： Frank Schulz ,  Markus Bill

    IPC: F16K31/40

    Abstract: A pilot-controlled directional control valve, in particular a directional poppet valve, has a valve housing (10), at least three fluid connection points (12, 14, 16), a main control stage (18) and a pilot control stage. A further fluid-controlling intermediate stage (22) is arranged between the main control stage (18) and the pilot control stage (20). The main control stage (18) has a longitudinally movable main control piston (24). The pilot control stage has a longitudinally movable pilot control piston (26).

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