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）。

公开(公告)号：US12104711B2

公开(公告)日：2024-10-01

申请号：US18010049

申请日：2021-05-28

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Wolfgang Friedrich Wilhelm Schneider ,  Roger Daniel Tanner ,  Marcel Stamber-Bur

IPC: F16K31/10 ,  F16K3/24 ,  F16K27/04

CPC classification number: F16K31/10 ,  F16K3/24 ,  F16K27/041 ,  F16K27/048

Abstract: A valve device has a valve housing (10, 54, 94, 166) and fluid ports in the valve housing (connected to or separated from one another in a fluid-conveying manner by a valve piston (22) displaceable along its longitudinal axis (24) in its various travel positions. A latching device (26, 28) latches the valve piston (22) in at least one of its travel positions. Individual latching parts (30, 38, 170) of the latching device, when it is actuated by an external force, take latching positions spatially different from one another with respect to the longitudinal axis (24) of the valve piston (22). The individual latching parts (30, 38, 170) of the latching device (26, 28) take positions differing from one another both in the axial direction and in the radial direction in the individual latching positions.

公开(公告)号：US12027311B2

公开(公告)日：2024-07-02

申请号：US17766776

申请日：2020-10-06

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Patrik Fuchs ,  Maurizio Spina

IPC: H01F7/126 ,  F16K31/06 ,  H01F7/08 ,  H01F7/121

CPC classification number: H01F7/126 ,  F16K31/0675 ,  H01F7/081 ,  H01F7/121

Abstract: An actuating device includes at least one magnetic drive (12) with a solenoid coil (34) accommodated in a housing (10). The solenoid coil generates heat during operation affecting the performance of the device. The heat is dissipated at least partially into the environment as power loss via the housing (10), is disclosed. For improved heat dissipation, parts (40, 42) of the device are formed of at least one special plastic material, which has a thermal conductivity coefficient of 0.25 to 1.25 W/(m·K) or W/m/K (i.e., watts per meter per Kelvin).

公开(公告)号：US20240011511A1

公开(公告)日：2024-01-11

申请号：US18035153

申请日：2021-10-27

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Markus BILL ,  Philipp HILZENDEGEN ,  Nicola-Vincenzo PORTA

IPC: F15B13/02 ,  F15B21/045 ,  F16K17/04 ,  F16K31/06 ,  F15B13/044

CPC classification number: F15B13/024 ,  F15B21/045 ,  F16K17/048 ,  F16K31/0675 ,  F15B13/044 ,  F15B2013/0448 ,  F15B2211/50518

Abstract: A valve, in particular having the form of a 2/2-way seat valve, characterized in that a pressure limiting function (28) is integrated in a joint valve body to implement a thermal overpressure protection.

公开(公告)号：US20230400017A1

公开(公告)日：2023-12-14

申请号：US17840111

申请日：2022-06-14

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Christian GROH ,  Frank KATTLER

IPC: F04B17/04

CPC classification number: F04B17/04

Abstract: A pump device having a pump piston (12) arranged in a longitudinally movable manner in a pump housing (10), which pump piston is actuated by an actuating solenoid device (14) to open an outlet valve (16) for discharging a fluid during a delivery stroke, characterized in that in a pump space (18) of the pump housing (10), during a suction stroke, the pump piston (12) generates a negative pressure and, upon passing over a control edge (20) delimiting the pump space (18), the piston establishes a fluid connection between a fluid inlet (22) in the pump housing (10) and the pump space (18) in such a way that the pump space (18) under the effect of the negative pressure present in the pump space (18) is filled with a filling volume, which results from a fluid flow routed along the outer circumference (24) of parts of the pump piston (12) in the direction of the outlet valve (16), and subsequently, during the delivery stroke, this filling volume is discharged from the pump space (18) via the outlet valve (16).

公开(公告)号：US20230162901A1

公开(公告)日：2023-05-25

申请号：US17766776

申请日：2020-10-06

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Patrik FUCHS ,  Maurizio SPINA

IPC: H01F7/126 ,  F16K31/06 ,  H01F7/08 ,  H01F7/121

CPC classification number: H01F7/126 ,  F16K31/0675 ,  H01F7/081 ,  H01F7/121

Abstract: An actuating device comprising at least one magnetic drive (12) with a solenoid coil (34) which, accommodated in a housing (10), generates heat during operation affecting the performance of the device, wherein said heat is dissipated at least partially into the environment as power loss via the housing (10), is disclosed, which is characterized in that, for improved heat dissipation, parts (40, 42) of the device consist of at least one special plastic material, which has a thermal conductivity coefficient of 0.25 to 1.25 W/(m·K).

公开(公告)号：US10519988B2

公开(公告)日：2019-12-31

申请号：US14912947

申请日：2014-08-14

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Gerd Schneider ,  Markus Bill

IPC: F15B13/04 ,  F16K37/00

Abstract: A pressure retaining valve (1) has a main control piston (39) guided longitudinally displaceably in a single-piece or multiple-piece valve housing (29) and a non-return piston (43). In a pressure retaining position, a fluid-conducting connection between connection points (37a, 37b, 21) is shut off by the two pistons (39, 43). Connection point (37a) serves to feed media. Connection point (37b) discharges media. Connection point (21) leads to a hydraulic consumer. In a load-raising position, the two pistons (43) move relative to one another into a release position, in which the connection between the medium feed (37a) and the consumer is established. In a load-reducing position, the two pistons (39, 43) assume a spacing from one another such that the connection between the medium discharge (37b) and the consumer is established. A monitoring device (75) determines the individual switching positions of the pistons (39, 43) to ensure reliable functioning of the pressure retaining valve (1).

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.

公开(公告)号：US10400801B2

公开(公告)日：2019-09-03

申请号：US15120155

申请日：2015-01-14

Applicant: HYDAC FLUIDTECHNIK GMBH

Inventor： Andreas Boehler ,  Markus Kuhn

IPC: F04B53/08 ,  F15B21/042 ,  F04B17/03 ,  F04B17/06 ,  F04B53/16 ,  H02K5/20 ,  H02K9/04 ,  F04D29/32 ,  F15B1/26 ,  F15B11/16

Abstract: A compact unit has an electric motor accommodated in housing parts (7, 55) of a unit housing (45) and driving at least one hydraulic pump and giving off heat at the same time, an air heat-exchanging device, and a fan (19) drivable to produce an air flow. A flow-conducting device (47, 55) divides the air flow at least in a first partial flow flowing around the electric motor and a second partial flow flowing to the heat-exchanging device in the unit housing (45). Alternatively, arranged in series, the air flow first flows against the electric motor and then the heat-exchanging device, or that the incidence of the air flow occurs at least partially in the reverse direction.

公开(公告)号：US09777844B2

公开(公告)日：2017-10-03

申请号：US14417919

申请日：2013-07-18

Applicant: Hydac Fluidtechnik GmbH

Inventor： Peter Bruck ,  Markus Bill

IPC: F16K31/00 ,  F16K1/52 ,  F16K31/40 ,  F15B13/01

CPC classification number: F16K1/526 ,  F15B13/015 ,  F16K31/408 ,  Y10T137/7771

Abstract: A valve, in particular a pilot-operated proportional directional poppet valve, has a valve housing (7) with a fluid inlet (21) and a fluid outlet (23). The fluid stream between the fluid inlet (21) and the fluid outlet (23) is adjustable by a main piston (27). A pilot valve chamber (37) provided on a rear face (29) of the main piston (27) has a pilot valve closing member (33) movable by an actuating device (69). By closing member (33) the fluid stream between the pilot valve chamber (37) and the fluid outlet (23) can be adjusted. An inlet aperture (3) is arranged between the fluid inlet (21) and the pilot valve chamber (37). A maximum volumetric flow controller (5) is in the main piston (27) in an outflow between the pilot valve chamber (37) and the fluid outlet (23).