EP2587062B1 - Hydraulische Antriebseinheit mit Keramikoszillator - Google Patents

Hydraulische Antriebseinheit mit Keramikoszillator Download PDF

Info

Publication number
EP2587062B1
EP2587062B1 EP11275135.9A EP11275135A EP2587062B1 EP 2587062 B1 EP2587062 B1 EP 2587062B1 EP 11275135 A EP11275135 A EP 11275135A EP 2587062 B1 EP2587062 B1 EP 2587062B1
Authority
EP
European Patent Office
Prior art keywords
fluid
tube
inner tube
hydraulic power
disposed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP11275135.9A
Other languages
English (en)
French (fr)
Other versions
EP2587062A1 (de
Inventor
Lucas Ihsl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP11275135.9A priority Critical patent/EP2587062B1/de
Publication of EP2587062A1 publication Critical patent/EP2587062A1/de
Application granted granted Critical
Publication of EP2587062B1 publication Critical patent/EP2587062B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/005—Installations wherein the liquid circulates in a closed loop ; Alleged perpetua mobilia of this or similar kind
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2220/00—Application
    • F05B2220/70—Application in combination with
    • F05B2220/709—Piezoelectric means

Definitions

  • the present invention relates to a hydraulic power unit and a hydraulic engine including the same, and more particularly, to a hydraulic power unit including a ceramic oscillator to receive and jet a fluid using an action of the ceramic oscillator, and a hydraulic engine including the hydraulic power unit to generate a rotational force.
  • US2009/0311116A1 discloses a "high flow piezoelectric pump”.
  • This piezoelectric pump includes a housing and an actuator located within the housing. An electric voltage applied to the actuator causes the actuator to apply a force to a first diaphragm that is proximate to the actuator.
  • a piston assembly is located within the housing and is moveable between at least a first position and a second position.
  • a first fluid chamber is defined by the housing, the first diaphragm, and the piston assembly.
  • a coupling fluid is located within the first fluid chamber for coupling the first diaphragm to the piston assembly.
  • a second fluid chamber is defined by the housing and the piston assembly. An inlet valve is in communication with the second fluid chamber and an outlet valve is in communication with the second fluid chamber.
  • this piezoelectric pump is just pumping device and not related to power generation.
  • the present invention provides an engine for generating rotational power by using environmentally friendly energy, and having improved performance and a long life span.
  • the present invention also provides an environmentally friendly hydraulic power unit that is capable of jetting a working fluid to realize a new engine, and has a long life span.
  • a hydraulic power unit comprising:
  • the oscillator is deformed when electricity is applied to the oscillator due to an inverse piezoelectric effect, wherein the oscillator is deformed in a direction into the hollow portion of the inner tube and a direction opposite thereto.
  • a plurality of the fluid inlets are formed along a circumference of the inner tube, and the inner check ring is disposed to contact the V-shaped groove of all of the fluid inlets so as to close all of the plurality of fluid inlets by using one inner check ring.
  • a plurality of the fluid outlets are formed along a circumference of the inner tube, and the outer check member is disposed to contact the V-shaped groove of all the fluid outlets so as to close all of the plurality of fluid outlets by using one outer check member.
  • the outer check member has a circular shape or an oval shape so as to be adhered between the fluid outlet and an outer housing.
  • a front end accumulator is disposed at a closed front end of the inner tube, and the front end accumulator comprises an accumulation plate, a front end cap, and a spring, and the spring is disposed between the front end cap and the accumulation plate so as to apply a force that pushes the accumulation plate toward an inner side of the hydraulic chamber with respect to the front end cap.
  • the hydraulic power unit further comprises a direction conversion tube that is coupled to the inner tube around the inner tube so as to be rotatable around a central axis of the inner tube, wherein the direction conversion tube comprises:
  • a hydraulic engine comprising: a housing;
  • the oscillator is deformed when electricity is applied to the oscillator due to an inverse piezoelectric effect, wherein the oscillator is deformed into the hollow portion of the inner tube and in a direction opposite thereto.
  • a plurality of the fluid inlets are formed along a circumference of the inner tube, and the inner check ring is disposed to contact the V-shaped groove of all of the fluid inlets so as to close all of the plurality of fluid inlets by using one inner check ring.
  • a plurality of the fluid outlets are formed along a circumference of the inner tube, and the outer check member is disposed to contact the V-shaped groove of all the fluid outlets so as to close all of the plurality of fluid outlets by using one outer check member.
  • the outer check member has a circular shape or an oval shape so as to be adhered between the fluid outlet and an outer housing.
  • a front end accumulator is disposed at a closed front end of the inner tube, and the front end accumulator comprises an accumulation plate, a front end cap, and a spring, and the spring is disposed between the front end cap and the accumulation plate so as to apply a force that pushes the accumulation plate toward an inner side of the hydraulic chamber with respect to the front end cap.
  • the hydraulic engine further comprises a direction conversion tube that is coupled to the inner tube around the inner tube so as to be rotatable around a central axis of the inner tube, wherein the direction conversion tube comprises:
  • the hydraulic engine further comprises a driving module for providing driving power of the oscillator of the hydraulic power units, wherein an even number of the hydraulic power units are used, and the driving module applies a signal to one of the plurality of hydraulic power units such that the oscillator reduces a volume of the hydraulic chamber so that a fluid is jetted from the corresponding hydraulic power unit; applies a signal to another hydraulic power unit such that the oscillator is deformed to expand the volume of the hydraulic chamber so as to reduce an internal pressure of the hydraulic chamber and a fluid jetted from an adjacent hydraulic power unit is pressurized into the hydraulic chamber; increases or decreases an amount of a driving fluid by using a difference in supply time of driving frequencies; and drives a direction conversion axis to be positioned at a forward rotation position or a reverse rotation position to control a rotational direction.
  • a driving module for providing driving power of the oscillator of the hydraulic power units, wherein an even number of the hydraulic power units are used, and the driving module applies a signal to one of the plurality of hydraulic power units such that
  • an inverse piezoelectric effect is mainly used in a ceramic oscillator included in a hydraulic power unit that constitutes the hydraulic engine.
  • displacement and a large force are generated in the ceramic oscillator according to a driving voltage, a driving frequency, and rigidity of the ceramic oscillator, and a working fluid is jetted by intensely pressurizing the working fluid to rotor blades by using the displacement and the large force, and thus a torque for rotating a rotor may be increased greatly.
  • a flow amount (of the working fluid) may be modified as desired by adjusting a supply time period of a driving signal applied to the ceramic oscillator.
  • the hydraulic engine according to the embodiments of the present invention is designed not to require, besides power of a secondary battery included in a driving module used in generating a signal to be applied to the ceramic oscillator included in the hydraulic power unit of the driving module, any additional power or fuel. Accordingly, without having to supply additional power or fuel, the hydraulic engine may be continuously operated by using the ceramic oscillator and the secondary battery, which supplies power needed to apply a driving signal to the ceramic oscillator, according to a life span of the ceramic oscillator.
  • FIG. 1 is a perspective view illustrating an external appearance of a hydraulic engine 100 according to an embodiment of the present invention
  • FIG. 2 is a side view illustrating a relationship between a position of a rotor 130 and positions of hydraulic power units 300 arranged inside the hydraulic engine 100 illustrated in FIG. 1 , wherein every two hydraulic power units 300 operate as a pair.
  • a numeral 300 indicates one or more hydraulic power units, however does not restrict the number of hydraulic power units installed in the hydraulic engine.
  • a numeral 300 itself is not shown in the FIGS.
  • the hydraulic engine 100 includes a housing 200, the rotor 130, an output axis 110, and the hydraulic power units 300.
  • the housing 200 corresponds to an outer form of the hydraulic engine 100.
  • a plurality of slots 210a, 210b, 210c, and 210d in which the plurality of hydraulic power units 300 are arranged are formed in the housing 200; the slots 210a, 210b, 210c, and 210d are connected to one another via a flow path (not shown) formed in the housing 200.
  • the rotor 130 is rotatably mounted in the housing 200, and includes a rotor main body 131 and a plurality of rotor blades 135 arranged to protrude in radial directions of the rotor main body 131 with respect to a rotation axis of the rotor main body 131.
  • the output axis 110 may be a portion that is extended from the rotation axis of the rotor 130 or is formed as a single unit with the rotation axis of the rotor 130, and is installed to protrude from the housing 200.
  • the hydraulic power units 300 have a function of jetting a fluid toward the plurality of rotor blades 135 arranged in the rotor 130 in tangential directions of the rotor main body 131.
  • the hydraulic power units 300 may be four hydraulic power units 300a, 300b, 300c, and 300d.
  • the four hydraulic power units 300a, 300b, 300c, and 300d may be installed around the rotor 130 as illustrated in FIG. 2 .
  • the number of hydraulic power units installed in the hydraulic engine is not limited thereto, and as long as every two hydraulic power units are arranged to operate as a pair, the number of hydraulic power units according to embodiments of the present invention is not limited.
  • every two hydraulic power units operate as a pair so as to shape a fluid flow.
  • an operation of rotating the rotor 130 via the four hydraulic power units 300 arranged in the hydraulic engine 100 is conducted in two stages.
  • a first stage is denoted by thick arrows in FIG. 2
  • a second stage is denoted by thin arrows in FIG. 2 .
  • the hydraulic power unit 300a disposed on the left jets a fluid, and the hydraulic power unit 300b on the right induces the fluid into the hydraulic power unit 300b by pressurizing the same.
  • the hydraulic power unit 300c arranged on the right jets a fluid, and the hydraulic power unit 300d arranged on the left induces the fluid into the hydraulic power unit 300d by pressurizing the same.
  • the hydraulic power unit 300d on the bottom jets a fluid, and the hydraulic power unit 300a on the top induces the fluid into the hydraulic power unit 300a by pressurizing the same.
  • the hydraulic power unit 300b arranged on the top jets a fluid, and the hydraulic power unit 300c arranged on the bottom induces the fluid into the hydraulic power unit 300c by pressurizing the same.
  • the second stage is performed, and the stages are repeated sequentially, thereby rotating the rotor 130.
  • the hydraulic engine 100 may be used by connecting the output axis 110 of the hydraulic engine 100 by using power transferring elements such as a pulley 111, a belt, a gear, etc. in vehicles or other machines that require a rotational force.
  • power transferring elements such as a pulley 111, a belt, a gear, etc. in vehicles or other machines that require a rotational force.
  • a surface of a cross-section of a rotor blade facing a fluid proceeding direction is formed to be convex in a space filled with the fluid, a surface area of the rotor blade contacting the fluid is increased, and thus the rotor blade is able to receive a greater force.
  • FIG. 3 is a schematic view illustrating a hydraulic engine having a rotor which has a rotation direction that is changeable by simultaneously changing directions of hydraulic power units.
  • a rotational angle of the hydraulic power units 300 may be 90 degrees; however, the rotational angle according to the present embodiment of the present invention is 45 degrees. A configuration thereof will be described in detail by describing a configuration of a direction conversion tube 330 below.
  • FIG. 4 is a partial cross-sectional view illustrating a relationship between the position of the rotor 130 installed in the housing 170 and the positions of two hydraulic power units 300 disposed on two sides of the rotor 130 illustrated in FIG. 1 according to an embodiment of the present invention.
  • the hydraulic power units 300 are arranged on two sides of the rotor 120.
  • the hydraulic power units 300 basically have the same configuration as each other except for a portion of front end portions thereof (lower portions in FIG. 4 ).
  • a direction conversion axis connected to the gears 120 and the direction conversion 330 may be arranged. By rotating the direction conversion axis, the direction conversion tube 330 arranged at each of the hydraulic power units 300 may be rotated. Alternatively, it is sufficient when the direction conversion axis is installed at only one of the hydraulic power units 300.
  • a front end accumulator is installed at the front end of the hydraulic power unit 300b.
  • the front end accumulator needs not be installed at all hydraulic power units 300 and may be installed only at one of two hydraulic power units 300 that has a function of jetting a fluid when receiving a first driving signal from a driving module, among every two hydraulic power units operating as a pair.
  • the configuration of the front end accumulator will be described in detail with reference to FIG. 5 .
  • FIG. 5 is a cross-sectional view illustrating a detailed configuration of the hydraulic power unit 300b according to an embodiment of the present invention.
  • the hydraulic power unit 300b includes the front end accumulator, an inner tube 380, a vibration tube 375, a back end protrusion 390, an oscillator 350, an inner check ring 340, an outer check ring 320, and the direction conversion tube 330.
  • the front end accumulator has a function of storing a first inflow into a hydraulic chamber 384 when a fluid first flows into the hydraulic chamber 384;
  • the front end accumulator includes a front end cap 310, a spring 363, and an accumulation plate 361.
  • the front end cap 310 is connected to the inner tube 380, and the accumulation plate 361 blocks a front end side of the inner tube 380.
  • Two ends of the spring 363 are respectively coupled to the front end cap 310 and the accumulation plate 361.
  • the inner tube 380 contains a working fluid, and with the accumulation plate 361 and the vibration tube 375, forms the hydraulic chamber 384. At least one fluid outlet 383 and at least one fluid inlet 381 are formed in the inner tube 380.
  • the vibration tube 375 may be deformed to reduce a volume of the hydraulic chamber 384 according to an operation of the oscillator 350; the vibration tube 375 is used to overcome limitations related to the ceramic oscillator's amplitude, and to increase an amount of fluid moving according to motion of the oscillator 350.
  • the vibration tube 375 has a two-layer structure consisting of a metal tube layer 371 and an elastic tube layer 372. Plurality of slits 371a are formed in the metal tube layer 371 along a length direction of the vibration tube 375. The vibration tube 375 will be described in detail below with reference to FIG. 6 .
  • the back end protrusion 390 is disposed at a back end of the vibration tube 375 so that the back end of the vibration tube 375 may maintain a form that protrudes into the hydraulic chamber 384.
  • the oscillator 350 is fixed to a back end of the back end protrusion 390 and may deform toward the hydraulic chamber 384.
  • the oscillator 350 may be formed of a piezoelectric element, and preferably, may be formed as a stack of a plurality of piezoelectric elements.
  • the inner check ring 340 is disposed to be mounted in the fluid inlet 381 formed in the inner tube 380 so as to open or close the fluid inlet 381.
  • a V-shaped groove is formed along an inner circumference portion of the inner tube 380 where the fluid inlet 381 is formed, and the inner check ring 340 is mounted in the V-shaped groove.
  • the outer check ring 320 is disposed to be mounted in the fluid outlet 383 formed in the inner tube 380 so as to open or close the fluid outlet 383.
  • a V-shaped groove is formed along an outer circumference portion of the inner tube 380 where the fluid outlet 383 is formed, and the outer check ring 320 is mounted in the V-shaped groove.
  • the direction conversion tube 330 is arranged outside the inner tube 380 and adjusts a direction of a jet flowing out from the hydraulic chamber 384 and an inlet direction of a fluid flowing into the hydraulic chamber 384.
  • the direction conversion tube 330 will be described in detail below with reference to FIG. 7 .
  • FIG. 6 is a cross-sectional view illustrating the vibration tube 375 cut along a line A-A of FIG. 5 .
  • the vibration tube 375 includes two layers: the elastic tube layer 372, which is easily elastically deformed and restored and which may be formed of a material such as urethane or rubber, as an inner layer, and the metal tube layer 371, which is formed of a metal and comprises the plurality of slits 371a extended in the length direction of the vibration tube 375 and formed along a circumferential direction of the vibration tube 375 and at predetermined intervals, as an outer layer.
  • the elastic tube layer 372 which is easily elastically deformed and restored and which may be formed of a material such as urethane or rubber, as an inner layer
  • the metal tube layer 371 which is formed of a metal and comprises the plurality of slits 371a extended in the length direction of the vibration tube 375 and formed along a circumferential direction of the vibration tube 375 and at predetermined intervals, as an outer layer.
  • the metal tube layer 371 is formed of a material having a greater modulus of elasticity than that of the elastic tube layer 372, but due to the slits 371a, the metal tube layer 371 may be deformed toward the hydraulic chamber 384 or away from the hydraulic chamber 384.
  • a protrusion 375a is formed at an end portion of the elastic tube layer 372 in the vibration tube 375 toward the inner tube 380, and a groove for accommodating the protrusion 375a is formed in an outer portion of an end portion of the inner tube 380 so that the elastic tube layer 372 is firmly fixed to the inner tube 380.
  • FIG. 7 is a perspective view illustrating the direction conversion tube 330 according to an embodiment of the present invention.
  • the direction conversion tube 330 has a form of a tube having a circular cross-section, in which three opening portions are formed.
  • One of the opening portions is a fluid discharging opening portion formed at the fluid outlet 383 (front end side), and the two other opening portions are a fluid inlet opening portion and a third inlet opening portion formed at the fluid inlet 381 (back end side).
  • the fluid discharging opening portion is disposed in a range from 0 to 45 degrees
  • the fluid inlet opening portion is disposed in a range from 0 to -45 degrees
  • the third inlet opening portion is disposed in a range from 45 to 90 degrees.
  • the direction conversion tube 330 is rotated by 45 degrees clockwise with respect to the x-axis, and here, a fluid may be jetted downward through the fluid discharging opening portion, or a fluid may flow from a side direction through the third inlet opening portion.
  • the outer check ring 320 is formed of an elastic material and has a function of opening or closing the fluid outlet 383.
  • a ball form may perform the same function.
  • a ball sheet may be formed on the fluid outlet 383, and a check ball may be mounted on the ball sheet, and then an outer housing may be installed such that the check ball is adhered to the fluid outlet 383.
  • the check ball is maintained in a state of being pressed slightly between the fluid outlet 383 and the outer housing, and when an internal pressure of the hydraulic chamber 384 increases, the check ball deforms, thereby opening the fluid outlet 383.
  • the internal pressure of the hydraulic chamber 384 is reduced, the check ball is adhered to the fluid outlet 383, thereby closing the fluid outlet 383.
  • the oscillator 350 is deformed toward the inner tube 380, that is, in a direction in which the volume of the hydraulic chamber 384 is reduced, a portion of the vibration tube 375 contacting a housing 170 contracts toward an inner portion of the vibration tube 375, and the internal pressure of the hydraulic chamber 384 increases. Accordingly, the fluid inlet 381 is closed by the inner check ring 340, and the outer check ring 320 is deformed, thereby jetting a working fluid through the fluid outlet 383. Also, the fluid passed through the fluid outlet 383 is discharged from the fluid outlet 331 of the direction conversion tube 330 toward the rotor blades 135.
  • the front end accumulator that uniformly balances small differences between an outlet amount and an inlet amount of a driving fluid is disposed between a pair of the hydraulic power units 300 at the front end portion of one hydraulic power unit.
  • the accumulator facilitates quick movement of a stationary fluid in the closed housing 170 as a machine starts driving. That is, when the oscillator 350 first starts to form a pressurized state so that the machine may start driving, the spring 363 of the accumulator is compressed, thereby enabling a quick start, and a fluid flow generated due to the movement of the oscillator 350 flows to and is accumulated at the front end portion of the hydraulic power unit. After all the oscillators 350 are in a stationary state, the accumulated fluid flows out and the spring 363 returns to its original state to facilitate restarting of the machine .
  • a driving module for controlling a driving signal applied to the oscillator 350 of the hydraulic power units 300 may be further used in addition to the hydraulic power units 300.
  • a configuration of a hydraulic engine with a driving module for controlling hydraulic power units will be summarized as follows.
  • the driving module basically applies a driving signal simultaneously to two hydraulic power units.
  • the oscillator 350 arranged in a hydraulic power unit (for example, 300a) is deformed in a direction to increase the pressure inside the hydraulic chamber 384 (forward direction), and a force acts upon a fluid inside the hydraulic chamber 384 due to the deformation of the vibration tube 375.
  • the force acting upon the fluid is relatively large due to the characteristics of the oscillator 350, and this large force is transferred to the fluid inside the hydraulic chamber 384.
  • the inner check ring 340 is adhered to the V-shaped groove in which the inner check ring 340 is mounted, thereby maintaining the fluid inlet 381 in a blocked state; as the outer check ring 320 having a smaller rigidity than a wall surface of the hydraulic chamber 384 is deformed, the fluid is pushed out of the hydraulic chamber 384 of the hydraulic power unit 300a through the fluid outlet 383.
  • the first driving signal of the driving module is also applied to the oscillator 350 of a neighboring hydraulic driving unit (for example, 300b); as the signal is applied, the oscillator 350 and the vibration tube 375 are deformed such that the pressure in the hydraulic chamber 384 is reduced (backward direction).
  • the pressure in the hydraulic chamber 384 is reduced, the outer check ring 320 is maintained in a state being adhered to the fluid outlet 383, and the inner check ring 340 does not seal the fluid inlet 381 and thus a fluid may be pressurized into the hydraulic chamber 384 of the hydraulic driving unit 300b via the fluid inlet 381 at which the inner check ring 340 is disposed.
  • the fluid inside the sealed space may be circulated in a desired direction to thereby prevent cavitations in the fluid.
  • a variation amount of the oscillator 350 In order to increase an amount of a fluid being discharged through an outlet, a variation amount of the oscillator 350, that is, a stroke, needs to be increased.
  • the stroke may be increased by increasing a voltage to be applied, or instrumentally, by forming a stack of a plurality of piezoelectric elements used as the oscillator 350.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Claims (7)

  1. Hydraulische Antriebseinheit (300), umfassend:
    ein Innenrohr (380), das einen hohlen Abschnitt umfasst, wobei ein Fluideinlass (381), durch den ein Fluid einströmt, und ein Fluidauslass (383), durch den ein Fluid abgeführt wird, auf einer Oberfläche des Innenrohrs (380) ausgebildet sind, und ein vorderer Endabschnitt des Innenrohrs (380) geschlossen ist;
    ein Schwingrohr (375), das umfasst: einen hohlen Abschnitt, eine elastische Rohrschicht (372), die aus einem flexiblen Material gebildet ist, und eine Metallrohrschicht (371), die die elastische Rohrschicht (372) kontaktiert und aus einem elastischen Metall gebildet ist,
    wobei eine Mehrzahl von Schlitzen (371a), die sich in einer Längsrichtung des Schwingrohrs (375) erstrecken, in der Metallrohrschicht (371) entlang eines Umfangs der Metallrohrschicht (371) ausgebildet sind, und der hohle Abschnitt des Schwingrohrs (375) mit dem hohlen Abschnitt des Innenrohrs (380) verbunden ist, um eine Hydraulikkammer (384) zu bilden, und ein hinterer Abschnitt des Schwingrohrs (375) geschlossenist;
    einen Vorsprung am hinteren Ende (391), der angeordnet ist, um ein hinteres Ende des Schwingrohrs (375) zu kontaktieren, wobei der Vorsprung am hinteren Ende (391) angeordnet ist, so dass das hintere Ende des Schwingrohrs (375) eine Form beibehält, die in die Hydraulikkammer (384) ragt;
    einen Oszillator (350), der an dem Vorsprung am hinteren Ende (391) befestigt ist und so angeordnet ist, dass der Vorsprung am hinteren Ende (391) in Einwärtsrichtung und Auswärtsrichtung der Hydraulikkammer (384) verformt wird, um einen Druck eines Fluids in dem durch das Innenrohr (380) gebildeten hohlen Abschnitt zu erhöhen oder zu verringern;
    ein äußeres Prüfelement (320), das aus einem elastischen Material gebildet ist und angeordnet ist, um an einer V-förmigen Nut des Fluidauslasses (383) haftend angebracht zu werden, die in einer Außenwand des Innenrohrs (380) ausgebildet ist; und
    einen inneren Prüfring (340), der aus einem elastischen Material gebildet ist und angeordnet ist, um an einer V-förmigen Nut des Fluideinlasses (381) haftend angebracht zu werden, die in einer Innenwand des Innenrohrs (380) so ausgebildet ist, um den Fluideinlass (381) des Innenrohrs (380) innerhalb des hohlen Abschnitts des Innenrohrs (380) zu schließen.
  2. Hydraulische Antriebseinheit (300) gemäß Anspruch 1, bei der der Oszillator (350) verformt wird, wenn Elektrizität an den Oszillator (350) aufgrund eines inversen piezoelektrischen Effekts angelegt wird, wobei der Oszillator (350) in einer Richtung in den hohlen Abschnitt des Innenrohrs (380) und in einer Richtung entgegengesetzt dazu verformt wird.
  3. Hydraulische Antriebseinheit (300) gemäß Anspruch 1, bei der eine Mehrzahl der Fluideinlässe (381) entlang eines Umfangs des Innenrohrs (380) ausgebildet ist, und der innere Prüfring (340) angeordnet ist, um die V-förmige Nut sämtlicher Fluideinlässe (381) zu kontaktieren, um sämtliche der Mehrzahl von Fluideinlässen (381) durch Verwenden eines inneren Prüfrings (340) zu schließen.
  4. Hydraulische Antriebseinheit (300) gemäß Anspruch 1, bei der eine Mehrzahl der Fluidauslässe (383) entlang eines Umfangs des Innenrohrs (380) ausgebildet ist, und das äußere Prüfelement (320) angeordnet ist, um die V-förmige Nut sämtlicher Fluidauslässe (383) zu kontaktieren, um sämtliche der Mehrzahl von Fluidauslässen (383) durch Verwenden eines äußeren Prüfelements (320) zu schließen.
  5. Hydraulische Antriebseinheit (300) gemäß Anspruch 1, bei der das äußere Prüfelement (320) eine kreisrunde Form oder eine ovale Form aufweist, um zwischen dem Fluidauslass (383) und einem Außengehäuse haftend angebracht zu werden.
  6. Hydraulische Antriebseinheit (300) gemäß Anspruch 1, bei der ein Akkumulator am vorderen Ende (362) an einem geschlossenen vorderen Ende des Innenrohrs (380) angeordnet ist, und
    der Akkumulator am vorderen Ende (362) eine Akkumulierungsplatte (361), eine vordere Endkappe (310) und eine Feder (363)umfasst, und
    die Feder (363) zwischen der vorderen Endkappe (310) und der Akkumulierungsplatte (361) so angeordnet ist, um eine Kraft anzulegen, die die Akkumulierungsplatte (361) zu einer Innenseite der Hydraulikkammer (384) mit Bezug auf die vordere Endkappe (310) hin drückt.
  7. Hydraulische Antriebseinheit (300) gemäß Anspruch 1, die ferner ein Richtungsumwandlungsrohr (330) umfasst, das mit dem Innenrohr (380) um das Innenrohr (380) herum gekoppelt ist, um um eine Mittelachse des Innenrohrs (380) herum drehbar zu sein,
    wobei das Richtungsumwandlungsrohr (330) umfasst:
    einen Fluidabführ-Öffnungsabschnitt (331), der mit dem Fluidauslass (383) des Innenrohrs (380) verbunden ist, damit ein Fluid nach außen abgeführt werden kann; und
    zwei Fluideinlass-Öffnungsabschnitte (332, 333), die mit dem Fluideinlass des Innenrohrs (380) verbunden sind, damit ein Fluid in die Hydraulikkammer (384) strömen kann,
    wobei die beiden Fluideinlass-Öffnungsabschnitte (332, 333) von dem Fluidauslass-Öffnungsabschnitt (331) in einer Umfangsrichtung um 45 Grad getrennt sind.
EP11275135.9A 2011-10-28 2011-10-28 Hydraulische Antriebseinheit mit Keramikoszillator Not-in-force EP2587062B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11275135.9A EP2587062B1 (de) 2011-10-28 2011-10-28 Hydraulische Antriebseinheit mit Keramikoszillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11275135.9A EP2587062B1 (de) 2011-10-28 2011-10-28 Hydraulische Antriebseinheit mit Keramikoszillator

Publications (2)

Publication Number Publication Date
EP2587062A1 EP2587062A1 (de) 2013-05-01
EP2587062B1 true EP2587062B1 (de) 2014-08-06

Family

ID=44999710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11275135.9A Not-in-force EP2587062B1 (de) 2011-10-28 2011-10-28 Hydraulische Antriebseinheit mit Keramikoszillator

Country Status (1)

Country Link
EP (1) EP2587062B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9404471B2 (en) 2013-10-18 2016-08-02 Lucas IHSL Hydraulic engine including hydraulic power unit
ES2562483T3 (es) * 2013-10-18 2016-03-04 Lucas Ihsl Motor hidráulico que incluye una unidad de energía hidráulica

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6637200B2 (en) * 2001-10-19 2003-10-28 Smiths Industries Aerospace Actuation Systems, Inc. Membrane-activated hydraulic actuator
JP4677933B2 (ja) * 2005-04-14 2011-04-27 セイコーエプソン株式会社 ポンプ及び流体システム
US8267675B2 (en) * 2008-06-16 2012-09-18 GM Global Technology Operations LLC High flow piezoelectric pump

Also Published As

Publication number Publication date
EP2587062A1 (de) 2013-05-01

Similar Documents

Publication Publication Date Title
WO2012075441A1 (en) Regenerative hydraulic pump
EP2435706B1 (de) Mikrosysteme zur umwandlung von drücken und kompression
JP7269650B2 (ja) 係留された翼を使用して風力エネルギーを利用する方法およびシステム
EP2587062B1 (de) Hydraulische Antriebseinheit mit Keramikoszillator
US20110260582A1 (en) Wave power generator
CN104220749A (zh) 流体压驱动单元
US8134243B2 (en) Energy converter
US8807932B2 (en) Hydraulic power unit having ceramic oscillator, and hydraulic engine including the hydraulic power unit
KR101555796B1 (ko) 에너지 생성기
JP5588557B1 (ja) 油圧動力ユニットを含む油圧エンジン
JP5323163B2 (ja) セラミック振動子を具備する油圧動力ユニット、及び該油圧動力ユニットを具備する油圧エンジン
JP5331250B2 (ja) 再生エネルギー型発電装置
US20100107866A1 (en) Three speed floating cup hydraulic motor
EP3324046B1 (de) Hydraulikmaschine und vorrichtung zur stromerzeugung aus erneuerbaren energien
US9145883B2 (en) Hydraulic power unit including ceramic oscillator and hydraulic engine including the hydraulic power unit
EP2685105B1 (de) Hydraulische Antriebseinheit mit Keramikoszillator und Hydraulikmotor mit der hydraulischen Antriebseinheit
JP6905284B1 (ja) 変位拡大装置、及びそれを含むエンジン
EP2863051B1 (de) Hydraulikmotor mit hydraulischem Antriebsaggregat
US11326453B2 (en) Displacement expanding apparatus and engine including the same
KR20140074558A (ko) 베인 각도 변경형 전자식 가변 용량 펌프
EP2192265A2 (de) Rotationsmaschine
KR100524192B1 (ko) 터빈 및 이를 이용한 유압 터빈엔진
WO2021112811A1 (ru) Низкозатратная антикавитационная гидротурбина
KR20140092529A (ko) 주기관의 축계 진동을 이용한 선박용 발전장치
CN114278528A (zh) 微型高响应控制泵

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20111102

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20140218

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 681195

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140815

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011008865

Country of ref document: DE

Effective date: 20140918

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 681195

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140806

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20140806

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141107

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141209

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141106

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141106

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141206

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011008865

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141028

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141031

26N No opposition filed

Effective date: 20150507

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141031

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141031

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20141028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20111028

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20171025

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20171025

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140806

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602011008865

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20181028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181028