WO2014079847A1 - Dispositif de pompage - Google Patents

Dispositif de pompage Download PDF

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Publication number
WO2014079847A1
WO2014079847A1 PCT/EP2013/074179 EP2013074179W WO2014079847A1 WO 2014079847 A1 WO2014079847 A1 WO 2014079847A1 EP 2013074179 W EP2013074179 W EP 2013074179W WO 2014079847 A1 WO2014079847 A1 WO 2014079847A1
Authority
WO
WIPO (PCT)
Prior art keywords
conveying
elements
rotor
pumping device
rotor elements
Prior art date
Application number
PCT/EP2013/074179
Other languages
German (de)
English (en)
Inventor
Bernhard Vodermayer
Heinrich Gmeiner
Original Assignee
Deutsches Zentrum für Luft- und Raumfahrt e.V.
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 Deutsches Zentrum für Luft- und Raumfahrt e.V. filed Critical Deutsches Zentrum für Luft- und Raumfahrt e.V.
Publication of WO2014079847A1 publication Critical patent/WO2014079847A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00—Axial-flow pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0055—Rotors with adjustable blades

Definitions

  • the invention relates to a particular electro-fluid pumping device.
  • Such pumping devices have to convey fluids, i. Liquids and / or gases rotor elements on.
  • Hydraulic drive systems for a reversing pumping operation have predominantly arrangements which operate with a constant direction of rotation and set the conveying direction of the pumping medium via control valves.
  • the valve systems are more or less complex and cumbersome. Due to safety requirements, valve technology in industrial plants requires power even when they are not moving. A high energy consumption of the entire facility is the result.
  • This method also has the disadvantage that enormous pressure surges can arise through the opening and closing of the valves, which greatly reduces the life of all parts present in the hydraulic circuit. In particular, this relates to the valve and line technology as well as the pump itself. All components involved must be more robust and thus designed to be larger and heavier. Furthermore, the number of installed parts also increases.
  • JP63-192995 discloses, for example, a vane pump, wherein the conveying direction by changing the direction of rotation of the rotor and additionally a valve technology takes place. This leads to poor efficiency and high mechanical wear of the parts.
  • pumps which change the direction of rotation to realize a change in the conveying direction.
  • propulsion systems for submarine or aeronautical applications ie submarines or zeppelins, which require turbines or propellers for locomotion or maneuvering are to be mentioned here.
  • Submarine applications are often based on injection applications, which are similar in design and function to a reversing axial flow pump.
  • Reversing pump systems have the major disadvantage that they have to change the direction of rotation in order to achieve the reversal of the conveying direction.
  • a reversing operation considerably limits the service life, since the bearing is loaded much more heavily than in a drive with a constant direction of rotation.
  • marine or submarine applications therefore, one often deviates from a swiveling drive, which, however, in turn entails considerable additional mechanical effort and thus a higher risk of failure.
  • the object of the invention is to provide a fluidic pump device which has a long service life.
  • the object is achieved by a pumping device according to claim 1 or 6.
  • a first preferred embodiment of the pumping device has two separately driven rotor elements. It is particularly preferred to provide two separate drives, so that in particular the speed of the two rotor elements can be controlled independently of each other in a simple manner. By providing two, in particular powerful electric motors, the structure of such a pump device can be significantly simplified. Modern electric motors have, in addition to a high power density, high efficiency and a long service life.
  • Each of the two rotor elements provided according to the invention has a plurality of conveying elements such as rotor blades.
  • Conveying surfaces are formed, which exert a force on the medium to be conveyed due to the rotation of the rotor elements and cause a conveying of the medium.
  • the pumping device is thus in particular an axial pump, wherein a varying of the conveying direction is realized by a phase difference or changing the offset between the conveying surfaces.
  • a pump as a check valve. This is done by periodically changing the offset between the two rotor elements. This causes a periodic change of the flow direction.
  • the pump thus acts as a check valve.
  • the blocking effect can also be achieved if the conveying surfaces of the rotor elements are brought into the outermost Kontraposition, so have the greatest distance from each other. In this case, it is sufficient to turn at a higher speed, thus increasing the flow resistance through the pump and achieving a blocking effect.
  • the two active surfaces of the conveying elements are arranged in a position in which neither of the two active surfaces has a preferred conveying direction.
  • the conveying elements of the two rotor elements overlap in the axial direction at least partially.
  • the conveying elements of a first of the two rotor elements bear against the direction of rotation of the two rotor elements in a side facing away from the direction of rotation or facing the direction of rotation of the conveying elements of the other or second rotor element.
  • the conveying elements of the first rotor element thus rush to or ahead of the conveying elements of the second rotor element.
  • the contact surfaces on which abut the conveying elements against each other are preferably formed congruent to each other, so that a flat sealing abutment of the two conveying elements is ensured.
  • two drive motors which are each connected to one of the two rotor elements, are arranged in a correspondingly hydro- or aerodynamically designed housing, so that it can be integrated directly into the fluid flow.
  • This has the advantage that the drive shaft of the motors can be connected directly to the rotor elements.
  • a second preferred embodiment of the pumping device also has two separately drivable rotor elements, which are in turn driven in a preferred embodiment, two separate drive motors, in particular electric motors.
  • this pumping device which is an alternative structure of the axial pump, changing the conveying direction, i. the changing of the flow direction of the fluid realized by the fact that the relative rotational speed of the two rotor elements is changed to each other.
  • the conveying direction i. the changing of the flow direction of the fluid realized by the fact that the relative rotational speed of the two rotor elements is changed to each other.
  • a first rotor elements is rotated faster than the second rotor element, whereby a conveying in one direction, for example, takes place axially from left to right.
  • a conveying direction for example, a conveying of the fluid axially from right to left.
  • the conveying surfaces of the conveying elements are in this case designed such that depending on the relative rotational speed different conveying surfaces are active and thus in particular cause a conveying of the fluid axially to the right or left.
  • one of the two rotor elements at least partially surrounds the other rotor element.
  • the two rotor elements are arranged coaxially with each other.
  • one rotor element can completely surround the other.
  • the inner rotor element therefore rotates faster or slower than the outer rotor element.
  • the outer rotor element on its inner side first active surfaces, in particular Having cavities which cooperate with provided on the outside of the inner rotor element second active surfaces, in particular cavities. These cavities form the conveying surfaces, so that, depending on the relative rotational speed of the two rotor elements, mutually different conveying surfaces are active or active.
  • the fluid is conveyed from the first into the second cavities or from the second into the first cavities.
  • the fluid is sucked in by the first cavities and conveyed into the second cavities.
  • the second cavities then eject the fluid.
  • a reverse conveying of the fluid takes place.
  • both the first and the second cavities are formed such that they extend in the axial direction of the rotor elements only over part of the axial width of the rotor elements. None of the cavities is thus continuous in the axial direction. This initially has the advantage that a defined conveying takes place from the first cavities into the second cavities or vice versa.
  • first and second cavities in such a way that there is no connection between the cavities.
  • the two rotor elements form a check valve.
  • the two drive motors are in turn arranged within the fluid flow, so that a compact construction is realized.
  • pressure sensors it is possible, for example, to deduce the current volume flow via the pressure difference and speed difference. Such a central arrangement of the sensors considerably reduces the latency for a control and thus also increases the accuracy.
  • An essential advantage of the two embodiments of the pump device according to the invention is that no change in the direction of rotation of the rotor elements must be made to change the conveying direction of the fluid. Preferably, regardless of the change in the direction of the volume flow, only the two rotor elements move. This has the consequence that the life of the bearings is significantly increased. Furthermore, it is possible that both rotor elements are accelerated after starting to a sufficiently high speed, so that for example in bearings designed as a sliding bearing, a hydrodynamic lubrication takes place. As a result, the wear can be minimized. For applications with high safety requirements or high reliability, the pump device can continue to promote the medium in both directions if one of the two rotor elements fails. This can be done by the fact that the remaining rotor element changes its direction of rotation with a change of the conveying direction and thus can cause the same pumping mechanisms as in the previously described speed difference.
  • the effect may occur that the rotor rotating at a lower rotational speed is accelerated by the rotor rotating at a faster rotational speed.
  • a deceleration of the slower rotor must be done.
  • the electric motor can be operated here as a generator, so that an energy recovery is possible. As a result, the efficiency of the pump can be further improved.
  • the pump device according to the invention can also be used in high-security applications, since the risk of failure of the entire pump device is avoided due to this redundancy.
  • the pumping device can also be operated with a motor, at least in a kind of emergency operation. If an engine fails, the flow direction can still be changed by reversing the direction of rotation of the rotor.
  • these can also be used in medical technology.
  • the invention Pumping devices for highly integrated hydraulic drives, such as used in artificial arm, hand or leg prostheses.
  • FIG. 4 shows a schematic perspective view of the two rotor elements of a further axial pump device in disassembled state
  • Figure 5 is a schematic perspective view of the two rotor elements of another axial pumping device in the assembled state
  • Figure 6 is a schematic perspective view of a
  • FIG. 1 is a schematic representation of a pump device for axial pumping of fluid
  • the rotor elements each have substantially axially extending conveying elements 14, 16, which are designed as blades.
  • the conveying elements overlap completely in the axial direction.
  • both rotor elements 10, 12 with the same Turned counterclockwise rotation speed.
  • the main surface, through which a conveying of the fluid takes place, is thus in each case the conveying surface 18 of the conveying elements 14.
  • two rotor elements 30, 32 are also provided. These rotor elements are essentially cylindrical rotor elements which are arranged coaxially with one another.
  • the inner rotor element 30 is in this case preferably surrounded by the outer rotor element 32.
  • the conveying direction of this pumping device depends on the relative rotational speed of the two rotor elements 30, 32 from each other, the direction of rotation always remains unchanged.
  • the fluid accelerates through the edges or regions 34 of the active surfaces or cavities 36 and deflects the fluid through the edges or regions 38.
  • the cavities of the inner Rotor element 30 are in this case provided on an outer side 40 of the rotor element 30 and do not extend over the entire axial width of the rotor element 30.
  • the cavities 36 are as shown in Figure 5, left open and closed to the right.
  • Cavities are also provided in the outer rotor element 32.
  • the corresponding active surfaces or cavities 42 (FIG. 3) are arranged on the inner side 44 of the cylindrically shaped outer rotor element 32.
  • the cavities 42 likewise do not extend over the entire axial width of the rotor element 32, but are open only in one direction. In particular, it can be seen from FIGS. 3 and 4 that the openings of the cavities 36, 42 are directed oppositely.
  • a suction of the fluid from the inner cavities 36 a conveying of the fluid from the inner cavities 36 in the outer cavities 42 and then out of the openings of the outer cavities 42 out. With a corresponding change in the relative rotational speed to one another, the fluid is conveyed in the opposite direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

L'invention concerne un dispositif de pompage comprenant deux éléments rotor (10, 12) pouvant être entraînés séparément. Ces derniers comprennent respectivement des éléments de refoulement (14, 16). Les éléments de refoulement (14, 16) forment des surfaces de refoulement (18, 22). En fonction de la position des éléments de refoulement les uns par rapport aux autres, différentes surfaces de refoulement (18, 22) sont actives, de sorte que la direction d'écoulement du milieu refoulé, lorsque le sens de rotation des éléments rotor est constant, peut être modifiée par une modification de la position des éléments de refoulement (14, 16).
PCT/EP2013/074179 2012-11-22 2013-11-19 Dispositif de pompage WO2014079847A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012221358.9 2012-11-22
DE201210221358 DE102012221358B3 (de) 2012-11-22 2012-11-22 Pumpvorrichtung

Publications (1)

Publication Number Publication Date
WO2014079847A1 true WO2014079847A1 (fr) 2014-05-30

Family

ID=49626947

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/074179 WO2014079847A1 (fr) 2012-11-22 2013-11-19 Dispositif de pompage

Country Status (2)

Country Link
DE (1) DE102012221358B3 (fr)
WO (1) WO2014079847A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014006620U1 (de) 2014-08-19 2015-11-20 Deutsches Zentrum für Luft- und Raumfahrt e.V. Aktuatoreinheit
DE202014006621U1 (de) 2014-08-19 2015-11-20 Deutsches Zentrum für Luft- und Raumfahrt e.V. Aktuatorsystem
DE102019209115A1 (de) 2019-06-24 2020-12-24 Audi Ag Kühlmittelkreislauf für eine Antriebseinrichtung sowie Verfahren zum Betreiben eines Kühlmittelkreislaufs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028948B (de) * 1952-04-30 1958-04-24 Arno Fischer Axial durchstroemte Turbine oder Pumpe mit verstellbaren Laufradschaufeln
FR2595417A1 (fr) * 1986-03-04 1987-09-11 Curtila Serge Dispositif a pales du type turbine, ventilateur, pompe ou autres
JPS63192995A (ja) 1986-12-09 1988-08-10 トリコ・フォルバース・リミテッド ２方向回転ポンプおよびその弁機構
CN2688942Y (zh) 2003-12-25 2005-03-30 华中科技大学 双向贯/轴流泵
DE102005038217A1 (de) * 2005-08-10 2007-02-15 Schlötzer, Oliver Pumpenrad Drehrichtungsunabhängig

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB312371A (en) * 1928-05-26 1930-05-08 Tecalemit Ltd Improvements relating to pumps
EP2353626A1 (fr) * 2010-01-27 2011-08-10 ECP Entwicklungsgesellschaft mbH Convoyeur pour un fluide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028948B (de) * 1952-04-30 1958-04-24 Arno Fischer Axial durchstroemte Turbine oder Pumpe mit verstellbaren Laufradschaufeln
FR2595417A1 (fr) * 1986-03-04 1987-09-11 Curtila Serge Dispositif a pales du type turbine, ventilateur, pompe ou autres
JPS63192995A (ja) 1986-12-09 1988-08-10 トリコ・フォルバース・リミテッド ２方向回転ポンプおよびその弁機構
CN2688942Y (zh) 2003-12-25 2005-03-30 华中科技大学 双向贯/轴流泵
DE102005038217A1 (de) * 2005-08-10 2007-02-15 Schlötzer, Oliver Pumpenrad Drehrichtungsunabhängig

Also Published As

Publication number Publication date
DE102012221358B3 (de) 2014-02-13

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