DE102006052584B4 - Oscillating wing for energy conversion - Google Patents

Oscillating wing for energy conversion

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Publication number
DE102006052584B4
DE102006052584B4 DE200610052584 DE102006052584A DE102006052584B4 DE 102006052584 B4 DE102006052584 B4 DE 102006052584B4 DE 200610052584 DE200610052584 DE 200610052584 DE 102006052584 A DE102006052584 A DE 102006052584A DE 102006052584 B4 DE102006052584 B4 DE 102006052584B4
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Germany
Prior art keywords
crank arm
wing
movement
joint
flowing medium
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Active
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DE200610052584
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German (de)
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DE102006052584A1 (en
Inventor
Dr.-Ing. Lawerenz Martin
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Universitaet Kassel
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Universitaet Kassel
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Priority to DE200610052584 priority Critical patent/DE102006052584B4/en
Publication of DE102006052584A1 publication Critical patent/DE102006052584A1/en
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Publication of DE102006052584B4 publication Critical patent/DE102006052584B4/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D5/00Other wind motors
    • F03D5/06Other wind motors the wind-engaging parts swinging to-and-fro and not rotating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00Other machines or engines
    • F03B17/06Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00Function
    • F05B2260/50Kinematic linkage, i.e. transmission of position
    • Y02E10/28
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy

Abstract

Mechanism for transmitting energy between a flowing medium (99) and a rotating shaft (11) consisting of an oscillating support surface (1) whose movement in the flowing medium (99) is transmitted to a first crank arm (2), the support surface ( 1) is connected to the first crank arm (2) by a first hinge (3) and the first crank arm (2) can in turn rotate about a first bearing (4), between the first crank arm (2) and also in the first crank arm (2) first bearing (4) rotatably mounted second crank arm (5) is a connection, so that the rotational movement of the first crank arm (2) on the second crank arm (5) is transmitted, which via a second joint (6) with a first connecting element (7 ), which is connected via a third joint (8) to a third crank arm (9), wherein the third crank arm (9) via the second bearing (10) carried shaft (11) with a fourth crank arm (12) is connected, the s a...

Description

  • The present invention relates to a device which controls an oscillatory movement of a streamlined body in a flowing medium, in particular flows in rivers, seas and in the atmosphere, so that the forces acting on the body flowing around in connection with the movement of the body Effect energy transfer between the flowing medium and the device. The known hydropower plants, such as water wheels and water turbines, require a sufficient gradient in order to enable an economical energy transfer. This usually requires suitable geographic conditions and is connected with the damming of the water by dams. By contrast, the present invention utilizes the kinetic energy of the flowing water. Thus, dams can be avoided with far-reaching interventions in the landscape.
  • In the case of asymmetric bodies or symmetrical bodies, which are flowed asymmetrically with respect to their axis of symmetry, the flow creates forces that can be used to transfer energy. When these bodies are moved in the direction of the forces acting on the body, a transfer of energy from the flowing medium to the body takes place, which in turn delivers this energy to the device controlling it. In a movement opposing the attacking forces, transfer of energy from the controlling device to the flowing medium takes place over the circulating body. If the flow around the body is moved up and down, an adaptation of the attacking forces is required to achieve the desired direction of energy transfer. The temporal assignment of the periodic upward and downward movement of the body to the periodic change of the attacking forces is thus decisive for the direction of the energy transfer.
  • Although only a few technical applications of the described principle exist, writings are known in which the operation of an oscillating wing is described for energy. In the publication by K. Jones, MF Platzer and S. Davids: "Oscillating-Wing Power Generator", published in: Proceedings of the 3rd ASME / JSME Fluid Engineering Conference July 18-23, 1999, as a contribution with the number FEDSM99- 7050, a mechanism for energy transfer from a stream of water to an oscillating wing is presented and analyzed in its functioning both theoretically and experimentally. The wing performs a linear up and down movement, which is guided by rails. About linkage, rocker arms and swing arms this movement is superimposed on a rotation of the wing.
  • In EP 1 071 882 B1 An invention is disclosed which describes the entry and emergence of a body in a flowing body of water. By means of laterally protruding from the body controls this movement is generated, wherein the thrust direction of the controls can be reversed. The movement of the body is used with the help of different devices for energy production. No information is given on the control of the controls.
  • Out WO 2005/090 777 A1 a device for generating energy from currents is known, which contains a linear guide of the support surface perpendicular to the flow direction by two symmetrically arranged linkage with associated joints. To generate a rotational movement of the wing, a rack gear and a cable system with hydraulic actuators or motors are used.
  • It is known DE 100 09 468 A1 a similar flow engine, which has a linear guide of the profile with damping elements, but does not contain information for generating the rotational movement of the support surface.
  • A reciprocating series of airfoils for transmitting energy from a water flow is also out US 5 548 956 A known. The energy-transferring function takes over here a rope, which is connected to the wings. Other ropes, which are connected to the wings on the upstream side, serve to control the angle of attack, so that the direction of the flow forces is reversed and the desired movement is achieved.
  • In the US Pat. No. 6,323,563 B1 illustrated invention of a system for hydrodynamic power generation by means of an oscillating wing is known. The movement of the wing is transmitted here via a hinged lever on an unspecified power unit. The rotational movement of the support surface is in this case caused by a hinged at the trailing edge of the support flap, which in turn is moved by a control unit and a lever system in position relative to the support surface.
  • Also known is the in US 2003/01223983 A1 illustrated invention of a self-tapping oscillating wing system. Here, a wing is offset by a movable lever in an oscillating motion by a flowing medium, the articulation of the wing before the neutral point takes place. With the help of a flap on the trailing edge, the angle of attack of the wing is changed so that a reversal of the movement comes about. The oscillating lever movement is transmitted via a connecting rod to a crank drive, which serves to remove the power. To the connecting rod is also coupled a mechanism that controls the position of the flap.
  • In DE 35 22 995 A1 a wind turbine is described, which moves one or more wings in a parallel guide up and down. Two shafts coupled by gears are in communication with two connecting rod connections which control the movement of the wings.
  • In the FR 2 278 565 A1 described invention generates the movement of the support surface by two separate cranks, which can be moved against each other and are coupled together by a chain. These elements make it possible to change the temporal coupling between the upward and downward movement and the relative rotation of the wing. With the help of push rod and the associated bearings a parallel guidance of the wing is realized. Another concept for guiding the wing, which consists in addition to two waves of 6 coupled elements, is in the FR 2 278 565 A1 also disclosed.
  • Also known are in GB 2 413 785 A shown mechanisms for moving a wing. Two different principles form the basis for further devices. In a first mechanism, a crankshaft drives two rods, which in turn cause two levers rotatable about fixed points to oscillate. The other end of the lever is attached to the support surface. A connection between the lever and the wing is designed as a linear guide within the wing. A separation of the upward and downward movement of the wing from its rotation is realized in a second mechanism. The rotation of the wing is in this case by means of a linkage which in turn is moved by a crank via a rack and a gear.
  • In the known devices partly electromechanical or hydraulic components are used to control the wing, while in some other disclosed inventions, the wings are guided in parallel by rails. In part, they have mutually sliding fasteners and in some representations, no information is included to control the wing movement. In contrast, the present invention describes a mechanism that realizes such an oscillating movement with a few mechanical components.
  • The object underlying the invention is to realize the movement of the flow around the wing, which is composed of up and down movements and a superimposed rotation, with the aid of a mechanical device. With regard to an economical solution, the invention is characterized by a simple construction with few components. The movement of the support surface is achieved in the invention by crank mechanisms and suitable connecting elements.
  • Show it:
  • 1 a top view of the mechanism in a schematic representation,
  • 2 a side view of the mechanism 1 .
  • 3 on an enlarged scale the elements of the mechanism on the side of the shaft,
  • 4 a schematic representation of the connection of the wing.
  • The aerodynamically effective wing 1 is with crank arm 2 through joint 3 rotatably connected, so that upon movement of the wing 1 through the flowing medium 99 , the angle of attack of the wing 1 opposite the flow 99 can be changed. crank 2 is going through warehouse 4 stored outside the flowing medium 99 firmly anchored.
  • By coupling the wing 1 with the crank arm 2 can the wing 1 only an oscillating swinging motion in the flow 99 To run. For this movement to be used for energy transfer, the flow force resulting from the flow around must have a defined direction. The magnitude and direction of this force are determined by the position of the wing 1 relative to the flow 99 dependent. Therefore, with the help of the lever 16 the wing 1 around the joint 3 turned into a suitable position. In order for the desired energy transfer is achieved, is a coordination of the movements of the two levers 2 and 16 required. This task as well as the conversion of the oscillating motion into a uniform rotation take over the components described below.
  • The pivoting movement of the crank arm 2 is about the camp 4 on crank arm 5 transmit, with the angle between the two crank arms 2 . 5 can be changed to rotation and oscillation of the wing 1 to adapt to each other. With the help of joint 6 gives crank arm 5 its rotational movement to the connecting element 7 which, in turn, is articulated 8th with crank arm 9 connected is. The dimensions of each movable element are chosen so that from the oscillating motion of the crank arm 2 a smooth rotation of the crank arm 9 will, the shaft 11 drives and through bearings 10 is fixed. camp 10 is like camp 4 firmly anchored outside the flowing medium, so that they can not move against each other.
  • wave 11 is with another crank arm 12 connected to the opposite crank arm 9 is arranged rotated, the angle between the two crank arms 9 . 12 can be changed to rotation and oscillation of the wing 1 to adapt to each other. crank 12 is with the help of joint 13 , Connecting element 14 and joint 15 with lever 16 coupled. The wing 1 is finally stuck with lever 16 connected, causing a movement of lever 16 to a rotation of the wing 1 leads.
  • For the particular application, the dimensions of the individual elements are adapted to the circumstances.
  • With regard to the direction of the energy transfer, there is a dependence on the temporal association between the upward and downward movement of the wing 1 and their rotation. Since the force acting on the wing force of the angle of attack against the flow 99 depends on the turn, which can be reversed by changing the timing of the two movements, the direction of energy transfer.

Claims (7)

  1. Mechanism for energy transfer between a flowing medium ( 99 ) and a rotating shaft ( 11 ), consisting of an oscillating wing ( 1 ), whose movement in the flowing medium ( 99 ) to a first crank arm ( 2 ), the wing ( 1 ) with the first crank arm ( 2 ) by a first joint ( 3 ) and the first crank arm ( 2 ) in turn for a first camp ( 4 ), wherein between the first crank arm ( 2 ) and one also in the first warehouse ( 4 ) rotatably mounted second crank arm ( 5 ) is connected, so that the rotational movement of the first crank arm ( 2 ) on the second crank arm ( 5 ) transmitted via a second joint ( 6 ) with a first connecting element ( 7 ), which is connected via a third joint ( 8th ) with a third crank arm ( 9 ), the third crank arm ( 9 ) through a second warehouse ( 10 ) worn wave ( 11 ) with a fourth crank arm ( 12 ), its movement via a fourth joint ( 13 ) to a second connecting element ( 14 ), which is replaced by a fifth joint ( 15 ) with one on the wing ( 1 ) attached lever ( 16 ) is coupled to the wing ( 1 ) transmits, so that from rotations about the first joint ( 3 ) and the first bearing ( 4 ) existing oscillating movement of the wing ( 1 ) and the rotation of the shaft ( 11 ) correlate.
  2. Mechanism according to claim 1, characterized in that two or more of the mechanisms according to claim 1 are arranged over the shaft ( 11 ) are coupled together.
  3. Mechanism according to claim 1 or 2, characterized in that the connection between the first crank arm ( 2 ) and the second crank arm ( 5 ) is adjustable so that the angle between these two crank arms can be adjusted.
  4. Mechanism according to at least one of claims 1 to 3, characterized in that the angle between the third crank arm ( 9 ) and the fourth crank arm ( 12 ) can be adjusted by an adjustable connecting element.
  5. Mechanism according to at least one of claims 1 to 4, characterized in that it serves to increase the energy of the flowing medium ( 99 ) by passing through the flowing medium ( 99 ) caused oscillating movement of the wing ( 1 ) in a rotation of the shaft ( 11 ) is converted.
  6. Mechanism according to at least one of claims 1 to 4, characterized in that the shaft ( 11 ) is rotated by a corresponding drive in rotation and thus the wing ( 1 ) performs an oscillating motion, thereby imparting a propulsive force to the flowing medium ( 99 ), which is used to drive vehicles or ships or to promote flowable media.
  7. Mechanism according to at least one of claims 1 to 6, characterized in that instead of the second connecting element ( 14 ) a cable system is used.
DE200610052584 2006-11-08 2006-11-08 Oscillating wing for energy conversion Active DE102006052584B4 (en)

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DE102006052584B4 true DE102006052584B4 (en) 2012-03-29

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009039072B4 (en) 2009-08-27 2011-07-21 Universität Kassel, 34125 Device for transmitting energy between a flowing medium and a crankshaft
WO2013058207A1 (en) * 2011-10-18 2013-04-25 Sasamoto Tsuyoshi Electricity-generating apparatus
JP4913921B2 (en) * 2011-10-18 2012-04-11 剛史 笹本 Power generator
JP5189689B1 (en) * 2012-06-04 2013-04-24 剛史 笹本 Power generator

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2278565A1 (en) * 1974-05-28 1976-02-13 Bouix Maurice Flap type marine propulsion system - has flaps operated by alternative mechanisms to give sinusoidal or cycloidal motion
DE3522995A1 (en) * 1985-06-27 1987-01-08 Nikolaus Wendel Wind power plant
US5548956A (en) * 1995-06-07 1996-08-27 Price; Daniel T. Cable restrained reciprocating blade system for energy extraction from moving body of water
DE10009468A1 (en) * 2000-02-28 2001-09-13 Guenter Freudenau Wind power machine has at least one aero-dynamic profile connected to at least one crank and at least guide and with at least one complete revolution of crank, profile is movable into different wind attack angles
US6323563B1 (en) * 1999-07-25 2001-11-27 Robert C. Kallenberg, Jr. Hydrodynamic power-generating system
EP1071882B1 (en) * 1998-03-07 2002-08-14 The Engineering Business Limited Extracting power from moving water
US20030123983A1 (en) * 2001-12-20 2003-07-03 Bolduc Maxime Lambert Self-trimming oscillating wing system
WO2005090777A1 (en) * 2004-03-16 2005-09-29 Tidal Energy Business Ltd Apparatus for extracting power from a watercurrent
GB2413785A (en) * 2004-05-07 2005-11-09 Marc Paish Fluid power generation/propulsion system incorporating movable vanes

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2278565A1 (en) * 1974-05-28 1976-02-13 Bouix Maurice Flap type marine propulsion system - has flaps operated by alternative mechanisms to give sinusoidal or cycloidal motion
DE3522995A1 (en) * 1985-06-27 1987-01-08 Nikolaus Wendel Wind power plant
US5548956A (en) * 1995-06-07 1996-08-27 Price; Daniel T. Cable restrained reciprocating blade system for energy extraction from moving body of water
EP1071882B1 (en) * 1998-03-07 2002-08-14 The Engineering Business Limited Extracting power from moving water
US6323563B1 (en) * 1999-07-25 2001-11-27 Robert C. Kallenberg, Jr. Hydrodynamic power-generating system
DE10009468A1 (en) * 2000-02-28 2001-09-13 Guenter Freudenau Wind power machine has at least one aero-dynamic profile connected to at least one crank and at least guide and with at least one complete revolution of crank, profile is movable into different wind attack angles
US20030123983A1 (en) * 2001-12-20 2003-07-03 Bolduc Maxime Lambert Self-trimming oscillating wing system
WO2005090777A1 (en) * 2004-03-16 2005-09-29 Tidal Energy Business Ltd Apparatus for extracting power from a watercurrent
GB2413785A (en) * 2004-05-07 2005-11-09 Marc Paish Fluid power generation/propulsion system incorporating movable vanes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
K. Jones, M.F. Platzer und S. Davids: "Oscillating-Wing Power Generator". Proceedongs of the 3rd ASME/JSME Fluids Engineering Conference, July 18 - 23. --- : ---, 1999. Beitrag Nr. FEDSM99-7050. - ISBN --- *

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Effective date: 20120630