EP0915257A2 - Positive displacement hydraulic machine - Google Patents

Positive displacement hydraulic machine Download PDF

Info

Publication number
EP0915257A2
EP0915257A2 EP98120444A EP98120444A EP0915257A2 EP 0915257 A2 EP0915257 A2 EP 0915257A2 EP 98120444 A EP98120444 A EP 98120444A EP 98120444 A EP98120444 A EP 98120444A EP 0915257 A2 EP0915257 A2 EP 0915257A2
Authority
EP
European Patent Office
Prior art keywords
plate segments
capacitor plate
rotary
electrorheological
housing
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.)
Granted
Application number
EP98120444A
Other languages
German (de)
French (fr)
Other versions
EP0915257B1 (en
EP0915257A3 (en
Inventor
Andreas Pohl
Horst Dr. Rosenfeldt
Eckhardt Dr. Wendt
Klaus Büsing
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.)
Carl Schenck AG
Bayer AG
Original Assignee
Carl Schenck AG
Bayer AG
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 Carl Schenck AG, Bayer AG filed Critical Carl Schenck AG
Publication of EP0915257A2 publication Critical patent/EP0915257A2/en
Publication of EP0915257A3 publication Critical patent/EP0915257A3/en
Application granted granted Critical
Publication of EP0915257B1 publication Critical patent/EP0915257B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/02—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C2/063—Rotary-piston machines or pumps of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/40—Properties
    • F04C2210/42—Properties magnetic or ferromagnetic; Ferrofluids

Definitions

  • the invention relates to a hydraulic displacement machine a rotor mounted in a housing that has at least one in an electrorheological / magnetorheological fluid filled chamber of the housing projecting rotary lobe, wherein the rotary lobe has at least one rotary lobe wing has, distributed over the circumference of the two end walls individually electrically controllable capacitor plate segments and / or individually electrically controllable coil arrangements, by their field exposure and influencing the intervening electrorheological / magnetorheological Liquid formed separating sections on the one hand and through the at least one rotary lobe wing on the other hand Suction and pressure side is formed.
  • a liquid pump that works on the displacement principle or liquid motor is known from DE 40 03 298.
  • This hydraulic displacement machine has a rotor, which in is housed in a housing.
  • a wing connected to the rotor circulates in a chamber of the housing.
  • On the end faces the chamber are arranged capacitor plate segments that are individually electrically controllable.
  • the chamber is electro-viscous Liquid filled.
  • Electrorheological fluids or magnetorheological Liquids are liquids in which the rheological Properties continuously via the electrical or magnetic Field are controllable. As a rule, it is electrorheological Liquids or magnetorheological liquids for suspensions, d. H. suspended in a carrier medium Solid particles that pass through the electric or magnetic field are polarizable.
  • electroviscous liquids or magnetorheological fluids it is possible become to execute actuators without moving parts or the Significantly reduce the number of moving parts.
  • Farther use in hydraulic valves, hydraulic cylinders, Vibrators, viscosity couplings, shock absorbers or Engine mounts (review article "Applications of the electrorheological Effect in engineering practice ", fluid mechanics Soviet Research, Vol. 8, No. 4, July-August 1979).
  • Electrodes of electrorheological fluid actuators have electrode arrangements between which the electrorheological Liquid and to which the electrical Control voltage is applied.
  • the interaction between the electrode arrangement and the electrorheological fluid can vary depending on the type of fluid deformation three basic modes are distinguished, the shear mode (Electrodes shift in parallel relative to each other Levels), the flow mode (electrodes are fixed, the Liquid flows between the electrodes) and the Squeeze mode (electrodes change their distance from each other). These modes can also occur in combination.
  • the object of the present invention is a hydraulic To further develop displacement machines of the type mentioned at the outset, that with the same structural dimensions of the displacement machine higher pressures, larger flows and one higher power density can be realized.
  • This object is achieved in that at least a pair of opposing capacitor plate segments and / or coil arrangements can be moved towards one another are trained.
  • the Capacitor plate segments and / or coil arrangements such controlled that the electrorheological fluid in this area solidified and the shift in electrorheological Fluid through the rotary lobe vanes in flow mode is cordoned off.
  • the solid particles align themselves during this solidification to chains.
  • the solidified areas behave like elastic solids.
  • the capacitor plate segments are towards each other designed to be movable.
  • the volume in the pressure medium chamber is reduced, the electrorheological fluid is now also switched to squeeze mode. Between the solid particles aligned into chains now work through the displacement of the capacitor plate segments electrostatic Opposing forces.
  • one can solidified electrorheological fluid plugs as Blocking in flow mode and squeeze mode is ten times higher Pressure build up before due to the liquid plug the pressure is pushed on.
  • a further embodiment of the inventive concept provides that the rotary lobe has six rotary lobes, between the rotary lobe vanes and the circular housing chamber six pressure medium spaces are formed, each with one Suction and a pressure line are connected and where a pair of opposing capacitor plate segments for each pressure medium space assigned.
  • the Pairs of capacitor plate segments controlled differently on the other hand, the individual suction and pressure lines the pressure medium rooms are connected in series or in parallel. Different flows or pressures (depending on Circuit of the pressure medium lines) can be realized. Consequently For example, the maximum Flow can be achieved (parallel connection), or also a high pressure with minimal flow (series connection).
  • the displacer 1 shown in Fig. 1 is as follows explained during pump operation.
  • a rotor 3 is rotatably mounted about the axis A.
  • the rotor 3 has an essentially disk-shaped rotary piston 4 connected, the radial evenly distributed over the circumference Has projections which act as rotary lobe 5.
  • the Rotary piston 4 runs when the rotor 3 rotates, which preferably is driven by a motor, not shown, in a annular chamber 6 formed in the cylindrical housing 2.
  • Displacement machine 1 shown six rotary lobes 5 on. Between the cylindrical housing 2 and rotary piston 4 six pressure medium spaces 7 are thus formed.
  • the annular chamber is on its opposite end walls 8 each with six stripe-shaped radially extending Capacitor plate segments 9 provided.
  • the illustrated embodiment carries each end wall 8 capacitor plate segments electrically insulated from one another and from the housing 9, the electrical lines 10 are connected to an electrical control device. This is only shown schematically.
  • the capacitor plate segments 9 can be moved towards one another arranged so that a reduction in the volume of the pressure medium spaces 7 and thus increase in pressure can be achieved can.
  • the movement of the capacitor plate segments 9 is about Actuators 20 shown schematically initiated.
  • the movement is indicated by the arrows B.
  • the actuators 20 can, for example piezoelectric, magnetic, hydraulic or magnetostrictive be controllable. Preferably An oscillatory movement is initiated via the actuators.
  • the control is not shown in the drawings.
  • a suction line 11 leads from a liquid reservoir through the housing 2 to an annular groove 12 from which a channel 13 in the rotor to a mouth 14 at the back of each Rotary lobe wing leads. From the front (in the direction of rotation seen) each rotary lobe wing introduces Channel 15 through the rotor to an annular groove 16, one of which Liquid discharge through the housing 2 to a consumer leads.
  • the pressure medium lines are connected in series, creating a maximum pressure at a low flow can be realized.
  • the actuators conduct an oscillatory movement the capacitor plate segments 9, whereby the electrorheological Liquid also transferred to squeeze mode becomes.
  • pairs of capacitor plate segments can now be used 9 can be switched on or off.
  • the rotary lobes 5 have the end walls 8 of the Annular chamber 6 facing surfaces 18 hydrostatic bearings 19th on whose storage pockets each have a hydraulic throttle are connected to the pressure side.
  • the hydrostatic bearings 19 ensure good hydraulic centering of the rotary lobe wing between the two side walls of the annular chamber 6.
  • an electrorheological fluid can also be a magnetorheological fluid or mixture both liquids can be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Damping Devices (AREA)
  • Reciprocating Pumps (AREA)
  • Rotary Pumps (AREA)
  • Actuator (AREA)

Abstract

At least one pair of opposing condenser plate segments (9) and/or flushing devices are movable towards one another. The rotary piston (4) has six vanes (5) and a ring chamber (6) in the housing (2) has six pressure medium spaces (7), which are connected with a suction and a pressure conduit (11-16).

Description

Die Erfindung betrifft eine hydraulische Verdrängermaschine mit einem in einem Gehäuse gelagerten Rotor, der mindestens einen in einer mit elektrorheologischer/magnetorheologischer Flüssigkeit gefüllten Kammer des Gehäuses ragenden Drehkolben aufweist, wobei der Drehkolben mindestens einen Drehkolbenflügel aufweist, mit über den Umfang der beiden Stirnwände verteilten einzeln elektrisch ansteuerbaren Kondensatorplattensegmente und/oder einzeln elektrisch ansteuerbaren Spulenanordnungen, wobei durch deren Feldbeaufschlagung und der Beeinflussung der dazwischen befindlichen elektrorheologischen/magnetorheologischen Flüssigkeit gebildeten Trennabschnitte einerseits und durch den mindestens einen Drehkolbenflügel andererseits die Saug- und Druckseite gebildet wird.The invention relates to a hydraulic displacement machine a rotor mounted in a housing that has at least one in an electrorheological / magnetorheological fluid filled chamber of the housing projecting rotary lobe, wherein the rotary lobe has at least one rotary lobe wing has, distributed over the circumference of the two end walls individually electrically controllable capacitor plate segments and / or individually electrically controllable coil arrangements, by their field exposure and influencing the intervening electrorheological / magnetorheological Liquid formed separating sections on the one hand and through the at least one rotary lobe wing on the other hand Suction and pressure side is formed.

Eine nach dem Verdrängerprinzip arbeitende Flüssigkeitspumpe oder Flüssigkeitsmotor ist aus der DE 40 03 298 bekannt. Diese hydraulische Verdrängermaschine weist einen Rotor auf, der in einem Gehäuse gelagert ist. Ein mit dem Rotor verbundener Flügel läuft in einer Kammer des Gehäuses um. An den Stirnflächen der Kammer sind Kondensatorplattensegmente angeordnet, die einzeln elektrisch ansteuerbar sind. Die Kammer ist mit elektroviskoser Flüssigkeit gefüllt. Durch Anlegen elektrischer Spannung an die Kondensatorplattensegmente wird innerhalb der Kammer eine Absperrung gebildet, so daß zwischen dem Flügel und der Absperrung die Saug- und die Druckseite der Pumpe gebildet wird. Um die Pump- und Saugwirkung aufrechtzuerhalten, läuft die elektrische Erregung der Kondensatorplattensegmente entsprechend der Drehbewegung des Flügels um.A liquid pump that works on the displacement principle or liquid motor is known from DE 40 03 298. This hydraulic displacement machine has a rotor, which in is housed in a housing. A wing connected to the rotor circulates in a chamber of the housing. On the end faces the chamber are arranged capacitor plate segments that are individually electrically controllable. The chamber is electro-viscous Liquid filled. By applying electrical Voltage across the capacitor plate segments is within the Chamber formed a barrier, so that between the wing and the suction and pressure sides of the pump are formed becomes. In order to maintain the pumping and suction effect, runs the electrical excitation of the capacitor plate segments accordingly the rotation of the wing.

Elektrorheologische Flüssigkeiten bzw. magnetorheologische Flüssigkeiten sind Flüssigkeiten, bei denen die rheologischen Eigenschaften stufenlos über das elektrische bzw. magnetische Feld steuerbar sind. In der Regel handelt es sich bei elektrorheologischen Flüssigkeiten bzw. magnetorheologischen Flüssigkeiten um Suspensionen, d. h. in einem Trägermedium suspendierte Festpartikel, die über das elektrische bzw. magnetische Feld polarisierbar sind. Durch die Verwendung elektroviskoser Flüssigkeiten bzw. magnetorheologischer Flüssigkeiten ist es möglich geworden, Aktoren ohne bewegte Teile auszuführen bzw. die Anzahl der bewegten Teile erheblich zu verringern. Weiterhin bekannt ist der Einsatz bei Hydraulikventilen, Hydraulikzylindern, Vibratoren, Viskositätskupplungen, Stoßdämpfern oder Motorlagern (Übersichtsartikel "Applications of the electrorheological Effect in Engineering practice", Fluid Mechanics Soviet Research, Vol. 8, No. 4, July-August 1979).Electrorheological fluids or magnetorheological Liquids are liquids in which the rheological Properties continuously via the electrical or magnetic Field are controllable. As a rule, it is electrorheological Liquids or magnetorheological liquids for suspensions, d. H. suspended in a carrier medium Solid particles that pass through the electric or magnetic field are polarizable. By using electroviscous liquids or magnetorheological fluids, it is possible become to execute actuators without moving parts or the Significantly reduce the number of moving parts. Farther use in hydraulic valves, hydraulic cylinders, Vibrators, viscosity couplings, shock absorbers or Engine mounts (review article "Applications of the electrorheological Effect in engineering practice ", fluid mechanics Soviet Research, Vol. 8, No. 4, July-August 1979).

Energiewandler von elektrorheologischen Flüssigkeitsaktoren besitzen Elektrodenanordnungen, zwischen denen sich die elektrorheologische Flüssigkeit befindet und an welche die elektrische Steuerspannung gelegt wird. Die Wechselwirkung zwischen der Elektrodenanordnung und der elektrorheologischen Flüssigkeit kann abhängig von der Art der Flüssigkeitsdeformation nach drei grundsätzlichen Moden unterschieden werden, dem Shearmode (Elektroden verschieben sich relativ zueinander in parallelen Ebenen), dem Flowmode (Elektroden sind fest angeordnet, die Flüssigkeit strömt zwischen den Elektroden hindurch) und dem Squeezemode (Elektroden verändern ihren Abstand zueinander). Diese Moden können auch in Kombination auftreten.Energy converter of electrorheological fluid actuators have electrode arrangements between which the electrorheological Liquid and to which the electrical Control voltage is applied. The interaction between the electrode arrangement and the electrorheological fluid can vary depending on the type of fluid deformation three basic modes are distinguished, the shear mode (Electrodes shift in parallel relative to each other Levels), the flow mode (electrodes are fixed, the Liquid flows between the electrodes) and the Squeeze mode (electrodes change their distance from each other). These modes can also occur in combination.

Aufgabe der vorliegenden Erfindung ist es, eine hydraulische Verdrängermaschine der eingangs genannten Gattung derart weiterzubilden, daß bei gleichen baulichen Abmessungen der Verdrängermaschine höhere Drücke, größere Durchflüsse und eine höhere Leistungsdichte realisiert werden können.The object of the present invention is a hydraulic To further develop displacement machines of the type mentioned at the outset, that with the same structural dimensions of the displacement machine higher pressures, larger flows and one higher power density can be realized.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß mindestens ein Paar einander gegenüberliegender Kondensatorplattensegmente und/oder Spulenanordnungen aufeinander zu bewegbar ausgebildet sind.This object is achieved in that at least a pair of opposing capacitor plate segments and / or coil arrangements can be moved towards one another are trained.

Bei dieser erfindungsgemäßen Ausbildung werden zunächst die Kondensatorplattensegmente und/oder Spulenanordnungen derart angesteuert, daß sich die elektrorheologische Flüssigkeit in diesem Bereich verfestigt und die Verschiebung der elektrorheologischen Flüssigkeit durch die Drehkolbenflügel im Flow-Mode abgesperrt wird. Bei dieser Verfestigung richten sich die Festpartikel zu Ketten aus. Die verfestigten Stellen verhalten sich wie elastische Festkörper. Zur Erhöhung des Druckes in der Druckmittelkammer sind die Kondensatorplattensegmente aufeinanderzu bewegbar ausgebildet. Das Volumen in der Druckmittelkammer wird verkleinert, die elektrorheologische Flüssigkeit wird nun zusätzlich in den Squeeze-Mode übergeführt. Zwischen den sich zu Ketten ausgerichteten Festpartikel wirken nun durch die Verschiebung der Kondensatorplattensegmente elektrostatische Gegenkräfte. Gegenüber dem Flow-Mode kann daher bei einem verfestigten elektrorheologischen Flüssigkeitspfropfen als Absperrung im flow-mode und Squeeze-Mode ein zehnfach höherer Druck aufgebaut werden, bevor der Flüssigkeitspfropfen aufgrund des Druckes weitergeschoben wird.In this training according to the invention, the Capacitor plate segments and / or coil arrangements such controlled that the electrorheological fluid in this area solidified and the shift in electrorheological Fluid through the rotary lobe vanes in flow mode is cordoned off. The solid particles align themselves during this solidification to chains. The solidified areas behave like elastic solids. To increase the pressure in the Pressure medium chamber, the capacitor plate segments are towards each other designed to be movable. The volume in the pressure medium chamber is reduced, the electrorheological fluid is now also switched to squeeze mode. Between the solid particles aligned into chains now work through the displacement of the capacitor plate segments electrostatic Opposing forces. Compared to the flow mode, one can solidified electrorheological fluid plugs as Blocking in flow mode and squeeze mode is ten times higher Pressure build up before due to the liquid plug the pressure is pushed on.

Eine weitere Ausgestaltung des Erfindungsgedankens sieht vor, daß der Drehkolben sechs Drehkolbenflügel aufweist, wobei zwischen den Drehkolbenflügeln und der kreisförmigen Gehäusekammer sechs Druckmittelräume gebildet werden, die jeweils mit einer Saug- und einer Druckleitung in Verbindung stehen und wobei jedem Druckmittelraum ein Paar gegenüberliegende Kondensatorplattensegmente zugeordnet sind. Hierdurch können zum einen die Paare von Kondensatorplattensegmente unterschiedlich angesteuert werden, zum anderen die einzelnen Saug- und Druckleitungen der Druckmittelräume in Reihe oder parallel geschaltet werden. Es können unterschiedliche Durchflüsse bzw. Drücke (je nach Schaltung der Druckmittelleitungen) realisiert werden. Somit kann beispielsweise bei einem niedrigen Druck der maximale Durchfluß erreicht werden(Parallelschaltung), oder auch ein hoher Druck bei einem minimalen Durchfluß (Reihenschaltung). Durch zu- und abschalten der Kondensatorplattensegmente kann der Durchfluß zu einer Impulsdurchflußregelung gesteuert werden.A further embodiment of the inventive concept provides that the rotary lobe has six rotary lobes, between the rotary lobe vanes and the circular housing chamber six pressure medium spaces are formed, each with one Suction and a pressure line are connected and where a pair of opposing capacitor plate segments for each pressure medium space assigned. As a result, the Pairs of capacitor plate segments controlled differently on the other hand, the individual suction and pressure lines the pressure medium rooms are connected in series or in parallel. Different flows or pressures (depending on Circuit of the pressure medium lines) can be realized. Consequently For example, the maximum Flow can be achieved (parallel connection), or also a high pressure with minimal flow (series connection). By switching the capacitor plate segments on and off the flow can be controlled to a pulse flow control.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgedankens sind Gegenstand weiterer Unteransprüche. Nachfolgend wird ein Ausführungsbeispiel der Erfindung näher erläutert, das in der Zeichnung dargestellt ist. Es zeigt:

Fig. 1
Eine hydraulische Verdrängermaschine in einer Ausführung als Flügelpumpe in einem Schnitt längs der Linie I-I in Fig. 2,
Fig. 2
einen Schnitt längs der Linie II-II in Fig. 1.
Further advantageous embodiments of the inventive concept are the subject of further dependent claims. An exemplary embodiment of the invention is illustrated below, which is shown in the drawing. It shows:
Fig. 1
A hydraulic displacement machine in a version as a vane pump in a section along the line II in Fig. 2,
Fig. 2
a section along the line II-II in Fig. 1st

Die in Fig. 1 dargestellte Verdrängermaschine 1 wird nachstehend bei Pumpenbetrieb erläutert. In einem zylindrischen Gehäuse 2 ist ein Rotor 3 um die Achse A drehbar gelagert. Der Rotor 3 ist mit einem im wesentlichen scheibenförmigen Drehkolben 4 verbunden, der gleichmäßig über den Umfang verteilt radiale Vorsprünge aufweist, die als Drehkolbenflügel 5 wirken. Der Drehkolben 4 läuft bei Rotation des Rotors 3, der vorzugsweise über einen nicht dargestellten Motor angetrieben wird, in einer im zylindrischen Gehäuse 2 ausgebildeten Ringkammer 6 um. Wie in der Fig. 2 ersichtlich, weist die bei dem Ausführungsbeispiel dargestellte Verdrängermaschine 1 sechs Drehkolbenflügel 5 auf. Zwischen dem zylindrischen Gehäuse 2 und Drehkolben 4 werden somit sechs Druckmittelräume 7 gebildet.The displacer 1 shown in Fig. 1 is as follows explained during pump operation. In a cylindrical housing 2, a rotor 3 is rotatably mounted about the axis A. The rotor 3 has an essentially disk-shaped rotary piston 4 connected, the radial evenly distributed over the circumference Has projections which act as rotary lobe 5. Of the Rotary piston 4 runs when the rotor 3 rotates, which preferably is driven by a motor, not shown, in a annular chamber 6 formed in the cylindrical housing 2. How 2 can be seen in the embodiment Displacement machine 1 shown six rotary lobes 5 on. Between the cylindrical housing 2 and rotary piston 4 six pressure medium spaces 7 are thus formed.

Die Ringkammer ist an ihren einander gegenüberliegenden Stirnwänden 8 jeweils mit sechs streifenförmigen radial sich erstreckenden Kondensatorplattensegmenten 9 versehen. Bei dem dargestellten Ausführungsbeispiel trägt jede Stirnwand 8 gegeneinander und gegen das Gehäuse elektrisch isolierte Kondensatorplattensegmente 9, die über elektrische Leitungen 10 mit einer elektrischen Steuereinrichtung verbunden sind. Dies ist nur schematisch dargestellt.The annular chamber is on its opposite end walls 8 each with six stripe-shaped radially extending Capacitor plate segments 9 provided. In which The illustrated embodiment carries each end wall 8 capacitor plate segments electrically insulated from one another and from the housing 9, the electrical lines 10 are connected to an electrical control device. This is only shown schematically.

Die Kondensatorplattensegmente 9 sind aufeinander zu bewegbar angeordnet, so daß eine Verringerung des Volumens der Druckmittelräume 7 und somit Erhöhung des Druckes erreicht werden kann. Die Bewegung der Kondensatorplattensegmente 9 wird über schematisch dargestellte Aktoren 20 eingeleitet. Die Bewegung ist durch die Pfeile B angedeutet.Die Aktoren 20 können beispielsweise piezoelektrisch, magnetisch, hydraulisch oder magnetostriktiv ansteuerbar ausgeführt sein. Vorzugsweise wird über die Aktoren eine Schwingbewegung eingeleitet. Die Ansteuerung ist in den Zeichnungen nicht näher dargestellt.The capacitor plate segments 9 can be moved towards one another arranged so that a reduction in the volume of the pressure medium spaces 7 and thus increase in pressure can be achieved can. The movement of the capacitor plate segments 9 is about Actuators 20 shown schematically initiated. The movement is indicated by the arrows B. The actuators 20 can, for example piezoelectric, magnetic, hydraulic or magnetostrictive be controllable. Preferably An oscillatory movement is initiated via the actuators. The control is not shown in the drawings.

Eine Saugleitung 11 führt von einem Flüssigkeitsvorratsbehälter durch das Gehäuse 2 zu einer Ringnut 12, aus der ein Kanal 13 im Rotor zu jeweils einer Mündung 14 an der Rückseite jedes Drehkolbenflügels führt. Von der Vorderseite (in Umdrehungsrichtung gesehen) jedes Drehkolbenflügels führt jeweils ein Kanal 15 durch den Rotor zu einer Ringnut 16, von der eine Flüssigkeitsableitung durch das Gehäuse 2 zu einem Verbraucher führt. Bei dem in den Fig. 1 und Fig. 2 dargestellten Ausführungsbeispiel sind die Druckmittelleitungen in Reihe geschaltet, wodurch ein maximaler Druck bei einem niedrigen Durchfluß realisiert werden kann.A suction line 11 leads from a liquid reservoir through the housing 2 to an annular groove 12 from which a channel 13 in the rotor to a mouth 14 at the back of each Rotary lobe wing leads. From the front (in the direction of rotation seen) each rotary lobe wing introduces Channel 15 through the rotor to an annular groove 16, one of which Liquid discharge through the housing 2 to a consumer leads. In the embodiment shown in FIGS. 1 and 2 the pressure medium lines are connected in series, creating a maximum pressure at a low flow can be realized.

In den Druckmittelräumen 7 befindet sich eine elektrorheologische Flüssigkeit. Wenn über die Steuereinrichtung die Paare voneinander gegenüberliegenden Kondensatorplattensegmenten 9 eine elektrische Spannung erhalten, erstarrt die elektrorheologische Flüssigkeit zwischen diesen gegenüberliegenden streifenförmigen Kondensatorplattensegmenten 9, so daß die Druckmittelräume 7 in diesem Umfangsbereich abgedichtet werden. Bei einer Drehung des Drehkolbens 4 und der daran ausgebildeten Drehkolbenflügel 5 in Richtung des Pfeils 17, werden bei einer elektrischen Ansteuerung der Kondensatorplattensegmente 9 jeweils die Druckmittelräume 7 zwischen zwei aufeinanderfolgenden Drehkolbenflügel 5 in zwei voneinander abgedichtete Volumenveränderliche Arbeitskammern unterteilt. Die sich bewegenden Drehkolbenflügel 5 saugen somit an ihren Rückseiten Flüssigkeit aus der Saugleitung 11 an und verdichten an ihren Vorderseiten die Flüssigkeit, die durch die Kanäle 15, die Ringnut 16 und die Flüssigkeitsableitung zum Verbraucher gedrückt wird.In the pressure medium rooms 7 there is an electrorheological one Liquid. If the pairs via the control device opposing capacitor plate segments 9 receive an electrical voltage, the electrorheological solidifies Liquid between these opposite stripe-shaped Capacitor plate segments 9, so that the pressure medium spaces 7 are sealed in this circumferential area. At a Rotation of the rotary piston 4 and the rotary piston vanes formed thereon 5 in the direction of arrow 17, are in an electrical Control of the capacitor plate segments 9 each the pressure medium spaces 7 between two successive rotary lobe vanes 5 variable in two sealed volume Working chambers divided. The moving rotary lobe wings 5 thus suck out liquid on their backs the suction line 11 and compress the front of the Liquid through the channels 15, the annular groove 16 and the Liquid drain to the consumer is pressed.

Gleichzeitig leiten die Aktoren eine Schwingungsbewegung auf die Kondensatorplattensegmente 9 ein, wodurch die elektrorheologische Flüssigkeit zusätzlich in den squeeze mode übergeführt wird.At the same time, the actuators conduct an oscillatory movement the capacitor plate segments 9, whereby the electrorheological Liquid also transferred to squeeze mode becomes.

Je nach benötigtem Druck können nun Paare von Kondensatorplattensegmente 9 zu bzw. abgeschaltet werden.Depending on the pressure required, pairs of capacitor plate segments can now be used 9 can be switched on or off.

Die Drehkolbenflügel 5 weisen in ihren den Stirnwänden 8 der Ringkammer 6 zugekehrten Flächen 18 hydrostatische Lager 19 auf, deren Lagertaschen jeweils über eine hydraulische Drossel mit der Druckseite verbunden sind. Die hydrostatischen Lager 19 bewirken eine gute hydraulische Zentrierung der Drehkolbenflügelflügel zwischen den beiden Seitenwänden der Ringkammer 6.The rotary lobes 5 have the end walls 8 of the Annular chamber 6 facing surfaces 18 hydrostatic bearings 19th on whose storage pockets each have a hydraulic throttle are connected to the pressure side. The hydrostatic bearings 19 ensure good hydraulic centering of the rotary lobe wing between the two side walls of the annular chamber 6.

Anstelle der Verwendung einer elektrorheologischen Flüssigkeit kann auch eine magnetorheologische Flüssigkeit oder ein Gemisch beider Flüssigkeiten eingesetzt werden.Instead of using an electrorheological fluid can also be a magnetorheological fluid or mixture both liquids can be used.

Bei der Verwendung von magnetorheologischen Flüssigkeiten werden anstelle der Kondensatorplattensegmente 9 elektrisch ansteuerbare Spulenanordnungen vorgesehen.When using magnetorheological fluids instead of the capacitor plate segments 9 electrically controllable Coil arrangements are provided.

Claims (2)

Hydraulische Verdrängermaschine mit einem in einem Gehäuse gelagerten Rotor, der mindestens einen in einer mit elektrorheologischer/magnetorheologischer Flüssigkeit gefüllten Kammer des Gehäuses ragenden Dehkolben aufweist, wobei der Drehkolben mindestens einen Drehkolbenflügel aufweist, mit über den Umfang der beiden Stirnwände verteilten einzeln elektrisch ansteuerbaren Kondensatorplattensegmente und/oder einzeln elektrisch ansteuerbaren Spulenanordnungen, wobei durch deren Feldbeaufschlagung und der Beeinflussung der dazwischen befindlichen elektrorheologischen/magnetorheologischen Flüssigkeit gebildeten Trennabschnitte einerseits und durch den mindestens einen Drehkolbenflügel andererseits die Saug- und Druckseite gebildet wird, dadurch gekennzeichnet, daß mindestens ein Paar einander gegenüberliegende Kondensatorplattensegmente (9) und/oder Spulenanordnungen aufeinanderzu bewegbar ausgebildet sind.Hydraulic displacement machine with one in one housing mounted rotor, the at least one in an electrorheological / magnetorheological Liquid-filled Chamber of the housing projecting Dehkolben, wherein the Rotary piston has at least one rotary lobe wing, with distributed individually over the circumference of the two end walls electrically controllable capacitor plate segments and / or individually electrically controllable coil arrangements, whereby through their field loading and influencing the electrorheological / magnetorheological in between Liquid formed separating sections on the one hand and on the other hand through the at least one rotary lobe wing the suction and pressure side is formed, thereby characterized in that at least one pair are opposite each other Capacitor plate segments (9) and / or coil arrangements are designed to be movable towards one another. Hydraulische Verdrängermaschine gemäß Patentanspruch 1, dadurch gekennzeichnet, daß der Drehkolben (4) sechs Drehkolbenflügel (5) aufweist und zwischen den Drehkolbenflügeln (5) und der Ringkammer (6) im Gehäuse (2) sechs Druckmittelräume (7) gebildet werden, die jeweils mit einer Saug- und einer Druckleitung (11,12,13,14,15,16) in Verbindung stehen.Hydraulic displacement machine according to claim 1, characterized characterized in that the rotary piston (4) has six rotary piston vanes (5) and between the rotary lobe vanes (5) and the annular chamber (6) in the housing (2) six pressure medium spaces (7) are formed, each with a Suction and a pressure line (11,12,13,14,15,16) in connection stand.
EP98120444A 1997-11-10 1998-10-29 Positive displacement hydraulic machine Expired - Lifetime EP0915257B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19749060A DE19749060A1 (en) 1997-11-10 1997-11-10 Hydraulic displacement machine
DE19749060 1997-11-10

Publications (3)

Publication Number Publication Date
EP0915257A2 true EP0915257A2 (en) 1999-05-12
EP0915257A3 EP0915257A3 (en) 2000-05-31
EP0915257B1 EP0915257B1 (en) 2004-03-03

Family

ID=7847812

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98120444A Expired - Lifetime EP0915257B1 (en) 1997-11-10 1998-10-29 Positive displacement hydraulic machine

Country Status (5)

Country Link
US (1) US6149391A (en)
EP (1) EP0915257B1 (en)
JP (1) JPH11230058A (en)
KR (1) KR19990045159A (en)
DE (2) DE19749060A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6352143B1 (en) * 2000-03-09 2002-03-05 Bridgestone/Firestone, Inc. Vibration damping system using a hydraulic damper with a field responsive fluid control
US6318968B1 (en) * 2000-03-31 2001-11-20 Delphi Technologies, Inc. Magnetorheological fluid pumping system
DE10233044A1 (en) * 2002-07-20 2004-02-05 Daimlerchrysler Ag Swing angle changing device for relative swing angle change of a camshaft towards a drive wheel in an internal combustion engine has an inner body linked to the shaft with a fixed rotation
US7300260B1 (en) * 2003-10-31 2007-11-27 Sauer-Danfoss Inc. Special fluids for use in a hydrostatic transmission
US7575531B2 (en) * 2006-05-11 2009-08-18 Chrysler Group Llc Active torque biasing differential using a variable viscosity fluid

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003298A1 (en) 1990-02-03 1991-08-08 Schenck Ag Carl Hydraulic pump or motor - has electro-viscous fluid seal that is controlled to generate rapid response

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651258A (en) * 1948-09-10 1953-09-08 Pierce Firth Field-sensitive hydraulic apparatus
US4302156A (en) * 1979-11-16 1981-11-24 General Motors Corporation Electro-viscous fan clutch assembly
US5189604A (en) * 1985-07-19 1993-02-23 El Paso Technologies Company Distributed logic control system and method
JPH0510350A (en) * 1991-07-05 1993-01-19 Koyo Seiko Co Ltd Driving/connecting device for four-wheel drive
US5816372A (en) * 1994-09-09 1998-10-06 Lord Corporation Magnetorheological fluid devices and process of controlling force in exercise equipment utilizing same
JPH09249021A (en) * 1996-03-14 1997-09-22 Toyota Autom Loom Works Ltd Variable capacity type viscous heater and capacity control method thereof
JP3638056B2 (en) * 1996-05-21 2005-04-13 株式会社デンソー Fuel pump and manufacturing method thereof
DE19735897A1 (en) * 1997-08-19 1999-02-25 Bayer Ag clutch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4003298A1 (en) 1990-02-03 1991-08-08 Schenck Ag Carl Hydraulic pump or motor - has electro-viscous fluid seal that is controlled to generate rapid response

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"APPLICATIONS OF THE ELECTRORHEOLOGICAL EFFECT IN ENGINEERING PRACTICE", FLUID MECHANICS SOVIET RECHEARCH, vol. 8, no. 4, July 1979 (1979-07-01)

Also Published As

Publication number Publication date
EP0915257B1 (en) 2004-03-03
US6149391A (en) 2000-11-21
KR19990045159A (en) 1999-06-25
DE19749060A1 (en) 1999-05-12
JPH11230058A (en) 1999-08-24
DE59810892D1 (en) 2004-04-08
EP0915257A3 (en) 2000-05-31

Similar Documents

Publication Publication Date Title
EP1075610A1 (en) Valve on the basis of electrorheological and/or magnetorheological fluids
DE3433797C2 (en)
DE2837944A1 (en) HYDRAULICALLY ACTUATED DISPLACEMENT PUMP
EP0915257B1 (en) Positive displacement hydraulic machine
DE19717691A1 (en) Actuator, esp. of linear or rotational type
DE3539220A1 (en) CONTROL DEVICE FOR A HYDROSTATIC GEARBOX
DE19725685B4 (en) Fluid pump
EP0898085B1 (en) Pressurised-fluid motor for electrorheological fluids
DE4003298C2 (en) Hydraulic displacement machine
DE10030079A1 (en) Cylinder piston arrangement based on electro- and magneto-rheological liquids, has second volume-changing chamber that produces bias force against admission direction of pressure medium in first working chamber
DE10108533C2 (en) Torque converter based on electrorheological and / or magnetorheological fluids
DE69732476T2 (en) ROTATING HYDRAULIC CONVERTER
EP1083361B1 (en) Torsional vibration damper
DE2821339C3 (en) Hydraulic piston-cylinder device for generating axial piston oscillation
DE10034239B4 (en) hydrotransformer
DE2717578C2 (en) Pump or compressor
DE4037134C2 (en)
DE2162408C3 (en) HYDRO RADIAL PISTON ENGINE
DE1553026A1 (en) Electrically driven motor pump
DE69902359T2 (en) ROTATIONAL PUMP WITH VARIABLE FLOW RATE
DE102017128098A1 (en) Hydraulic system
DE19506663C2 (en) impulse Tools
DE2319475A1 (en) TIP SEAL
DE582165C (en) Rotary piston engine or pump in which two pistons rotate at different angular speeds
DE19960449A1 (en) Rotation machine has electrorheological and/or magnetorheological liquid chamber with dividing wall with axially separate elements joined to rotor, controlled capacitor plate segments

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE CH DE ES FR GB IT LI SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20001110

AKX Designation fees paid

Free format text: BE CH DE ES FR GB IT LI SE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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): BE CH DE ES FR GB IT LI SE

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

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 PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 20040303

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040303

REF Corresponds to:

Ref document number: 59810892

Country of ref document: DE

Date of ref document: 20040408

Kind code of ref document: P

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

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: 20040603

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

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: 20040614

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

Ref country code: FR

Payment date: 20040913

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: 20040916

Year of fee payment: 7

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

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

Effective date: 20041031

Ref country code: CH

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

Effective date: 20041031

Ref country code: BE

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

Effective date: 20041031

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

26N No opposition filed

Effective date: 20041206

BERE Be: lapsed

Owner name: *BAYER A.G.

Effective date: 20041031

Owner name: CARL *SCHENCK A.G.

Effective date: 20041031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: 20051029

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

Effective date: 20051029

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: 20060630

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20060630

BERE Be: lapsed

Owner name: *BAYER A.G.

Effective date: 20041031

Owner name: CARL *SCHENCK A.G.

Effective date: 20041031

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

Ref country code: DE

Payment date: 20111223

Year of fee payment: 14

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: 20130501

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59810892

Country of ref document: DE

Effective date: 20130501