EP0915257A2 - Hydraulische Verdrängermaschine - Google Patents
Hydraulische Verdrängermaschine Download PDFInfo
- 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
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
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- 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
Description
- 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.
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.
- 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.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19749060A DE19749060A1 (de) | 1997-11-10 | 1997-11-10 | Hydraulische Verdrängermaschine |
DE19749060 | 1997-11-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0915257A2 true EP0915257A2 (de) | 1999-05-12 |
EP0915257A3 EP0915257A3 (de) | 2000-05-31 |
EP0915257B1 EP0915257B1 (de) | 2004-03-03 |
Family
ID=7847812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98120444A Expired - Lifetime EP0915257B1 (de) | 1997-11-10 | 1998-10-29 | Hydraulische Verdrängermaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US6149391A (de) |
EP (1) | EP0915257B1 (de) |
JP (1) | JPH11230058A (de) |
KR (1) | KR19990045159A (de) |
DE (2) | DE19749060A1 (de) |
Families Citing this family (5)
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 (de) * | 2002-07-20 | 2004-02-05 | Daimlerchrysler Ag | Vorrichtung zur relativen Drehwinkeländerung einer Welle zu einem Antriebsrad |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4003298A1 (de) | 1990-02-03 | 1991-08-08 | Schenck Ag Carl | Hydraulische verdraengermaschine |
Family Cites Families (8)
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 (ja) * | 1991-07-05 | 1993-01-19 | Koyo Seiko Co Ltd | 四輪駆動用駆動連結装置 |
US5816372A (en) * | 1994-09-09 | 1998-10-06 | Lord Corporation | Magnetorheological fluid devices and process of controlling force in exercise equipment utilizing same |
JPH09249021A (ja) * | 1996-03-14 | 1997-09-22 | Toyota Autom Loom Works Ltd | 能力可変型ビスカスヒータ及びその能力制御方法 |
JP3638056B2 (ja) * | 1996-05-21 | 2005-04-13 | 株式会社デンソー | 燃料ポンプおよびその製造方法 |
DE19735897A1 (de) * | 1997-08-19 | 1999-02-25 | Bayer Ag | Kupplung |
-
1997
- 1997-11-10 DE DE19749060A patent/DE19749060A1/de not_active Withdrawn
-
1998
- 1998-10-29 EP EP98120444A patent/EP0915257B1/de not_active Expired - Lifetime
- 1998-10-29 DE DE59810892T patent/DE59810892D1/de not_active Expired - Lifetime
- 1998-11-09 JP JP10318102A patent/JPH11230058A/ja not_active Withdrawn
- 1998-11-10 KR KR1019980047961A patent/KR19990045159A/ko not_active Application Discontinuation
- 1998-11-10 US US09/189,695 patent/US6149391A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4003298A1 (de) | 1990-02-03 | 1991-08-08 | Schenck Ag Carl | Hydraulische verdraengermaschine |
Non-Patent Citations (1)
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 (de) | 2004-03-03 |
US6149391A (en) | 2000-11-21 |
KR19990045159A (ko) | 1999-06-25 |
DE19749060A1 (de) | 1999-05-12 |
JPH11230058A (ja) | 1999-08-24 |
DE59810892D1 (de) | 2004-04-08 |
EP0915257A3 (de) | 2000-05-31 |
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