EP0126114A1 - Device at a wind propeller - Google Patents

Device at a wind propeller

Info

Publication number
EP0126114A1
EP0126114A1 EP83903607A EP83903607A EP0126114A1 EP 0126114 A1 EP0126114 A1 EP 0126114A1 EP 83903607 A EP83903607 A EP 83903607A EP 83903607 A EP83903607 A EP 83903607A EP 0126114 A1 EP0126114 A1 EP 0126114A1
Authority
EP
European Patent Office
Prior art keywords
disc
blade
hub
wind
openings
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.)
Withdrawn
Application number
EP83903607A
Other languages
German (de)
French (fr)
Inventor
Leif Jilken
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.)
STANGAKONSULT I KALMAR HB
Original Assignee
STANGAKONSULT I KALMAR HB
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 STANGAKONSULT I KALMAR HB filed Critical STANGAKONSULT I KALMAR HB
Publication of EP0126114A1 publication Critical patent/EP0126114A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0236—Adjusting aerodynamic properties of the blades by changing the active surface of the wind engaging parts, e.g. reefing or furling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/74—Adjusting of angle of incidence or attack of rotating blades by turning around an axis perpendicular the rotor centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/75—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism not using auxiliary power sources, e.g. servos
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
    • F05B2260/77—Adjusting of angle of incidence or attack of rotating blades the adjusting mechanism driven or triggered by centrifugal forces
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • This invention relates to a device at a wind propeller the blades of which are permanently connected to a rotatably mounted hub.
  • the object of the present invention is to achieve a wind propeller of introductory said type where the area of action successively decreases at an increasing wind velocity and this is made possible in that the blades of the propeller have a radially displaceable disc which under the influence of a springing means working between the disc and the blade or the hub is kept in a first position relative to the hub as long as the wind propeller remains motionless or rotates slowly but at an increasing rotary speed is successively displaced radially outwards from the hub to a second position relative to the hub by the centrifugal force counteracted by the springing means and that the blade as well as the disc belonging to it has one or more through-openings equally dispersed over the blade and the disc so that when the disc is in the first said position it covers the opening or the openings in the blade and vice versa, that is to say the blade and the disc create a complete area of action for the wind and so that when the disc moves towards the second position caused by an increased wind velocity, said opening or openings in the blade and the disc increasingly coincide
  • fig 1 schematically shows an embodiment of a wind propeller according to the invention at a low wind velocity.
  • Fig 2 shows the propeller according to fig 1 at a high wind velocity.
  • FIG. 1 relates to a blade of a wind propeller.
  • the blade is permanently connected to a rotatably mounted hub 2 together with the other blades of the propeller.
  • a radially displaceable disc 3 is arranged at the front or the back of the blade.
  • the disc is connected to the hub 2 or the area of the blade 1 nearest to the hub via a springing means 4, in the simplest adaption a spiral spring.
  • the task of the springing means 4 is to keep the disc in a first position fig 1, as long as the wind propeller remains motionless or rotates slowly.
  • the disc 3 is successively displaced outwardly from the hub 2, working against the springing means 4, until the disc has reached a second position, fig 2.
  • the blade 1 as well as the disc 3 has one or more through openings 5 and 6 respectively, in the drawing eight openings. These are equally dispersed both on the blade 1 and the disc 3.
  • the openings are displaced relative to each other so that the openings 6 in the disc 3 are covered by the blade 1 and the openings 5 in this are covered by the disc 3.
  • the blade 1 and the disc 3 form a complete area of action for the wind.
  • the rotary speed of the wind propeller is kept constant in a simple way when the wind velocity varies within certain limits.

Abstract

Les pales d'une éolienne sont reliées en permanence à un moyeu monté de manière rotative (2). L'invention se caractérise en ce que les pales (1) de l'éolienne ont un disque déplaçable radialement (3) qui, sous l'influence d'un dispositif à ressort (4) travaillant entre le disque (3) et la pale (1) ou le moyeu (2), est maintenu dans une première position par rapport au moyeu (2) tant que l'éolienne reste sans mouvement ou tourne lentement, mais qui est déplacé progressivement radialement vers l'extérieur par rapport au moyeu (2), lorsque la vitesse de rotation augmente, par une force centrifuge contrecarrée par les moyens à ressort (4). La pale (1) ainsi que le disque (3) lui appartenant possèdent une ou plusieurs ouvertures traversantes (5, 6) réparties uniformément sur la pale (1) et sur le disque (3) de sorte que lorsque le disque (3) se trouve dans ladite première position il recouvre l'ouverture ou les ouvertures (5) de la pale (1) et vice versa, et la pale (1) et le disque (3) créent une zone complète d'action du vent. Lorsque le disque (3) se déplace vers la seconde position suite à une augmentation de la vitesse du vent, la ou les ouvertures (5, 6) de la pale (1) et du disque (3) coïncident de manière croissante.The blades of a wind turbine are permanently connected to a rotatably mounted hub (2). The invention is characterized in that the blades (1) of the wind turbine have a radially displaceable disc (3) which, under the influence of a spring device (4) working between the disc (3) and the blade (1) or the hub (2), is maintained in a first position relative to the hub (2) as long as the wind turbine remains motionless or rotates slowly, but which is moved progressively radially outward relative to the hub ( 2), when the speed of rotation increases, by a centrifugal force counteracted by the spring means (4). The blade (1) as well as the disc (3) belonging to it have one or more through openings (5, 6) distributed uniformly on the blade (1) and on the disc (3) so that when the disc (3) is located in said first position it covers the opening or openings (5) of the blade (1) and vice versa, and the blade (1) and the disc (3) create a complete zone of action of the wind. As the disc (3) moves to the second position due to an increase in wind speed, the opening (s) (5, 6) of the blade (1) and the disc (3) increasingly coincide.

Description

Device at a wind propeller
This invention relates to a device at a wind propeller the blades of which are permanently connected to a rotatably mounted hub.
One of the biggest disadvantages with wind propellers of above said type is that the wind propeller's rotary speed is dependent upon the wind velocity. As most types of equipment which can be conceivably driven by a wind propeller demands considerably constant rotary speed, there have been trials to vary the area of action of the wind depending on the wind velocity by varying the banking angle of the blades. It is obvious that such solutions are technically complicated and expensive and are therefore not applicable to wind propellers intended for simple adaptions, for example to supply a recreative cottage with electricity for lighting and perhaps a certain amount of heating.
The object of the present invention is to achieve a wind propeller of introductory said type where the area of action successively decreases at an increasing wind velocity and this is made possible in that the blades of the propeller have a radially displaceable disc which under the influence of a springing means working between the disc and the blade or the hub is kept in a first position relative to the hub as long as the wind propeller remains motionless or rotates slowly but at an increasing rotary speed is successively displaced radially outwards from the hub to a second position relative to the hub by the centrifugal force counteracted by the springing means and that the blade as well as the disc belonging to it has one or more through-openings equally dispersed over the blade and the disc so that when the disc is in the first said position it covers the opening or the openings in the blade and vice versa, that is to say the blade and the disc create a complete area of action for the wind and so that when the disc moves towards the second position caused by an increased wind velocity, said opening or openings in the blade and the disc increasingly coincides.
In the following the invention will be explained further relating to the enclosed drawing where fig 1 schematically shows an embodiment of a wind propeller according to the invention at a low wind velocity. Fig 2 shows the propeller according to fig 1 at a high wind velocity.
In the drawing numeral 1 relates to a blade of a wind propeller. The blade is permanently connected to a rotatably mounted hub 2 together with the other blades of the propeller. At the front or the back of the blade a radially displaceable disc 3 is arranged. The disc is connected to the hub 2 or the area of the blade 1 nearest to the hub via a springing means 4, in the simplest adaption a spiral spring. The task of the springing means 4 is to keep the disc in a first position fig 1, as long as the wind propeller remains motionless or rotates slowly. When the rotary speed of the wind propeller increases caused by an increasing wind velocity, the disc 3 is successively displaced outwardly from the hub 2, working against the springing means 4, until the disc has reached a second position, fig 2.
The blade 1 as well as the disc 3 has one or more through openings 5 and 6 respectively, in the drawing eight openings. These are equally dispersed both on the blade 1 and the disc 3. When the disc 3 is in its first position the openings are displaced relative to each other so that the openings 6 in the disc 3 are covered by the blade 1 and the openings 5 in this are covered by the disc 3. Thus the blade 1 and the disc 3 form a complete area of action for the wind.
When the disc is successively displaced towards the second position by above said reason, the openings 5, 6 will be covered by the disc 3 to a gradually less extent to finally coincide when the disc 3 is situated in the second position. This means that the effective area of action of the blade 1 successively decreases with an increasing wind velocity.
By means of the invention the rotary speed of the wind propeller is kept constant in a simple way when the wind velocity varies within certain limits.

Claims

Claim
Device at a wind propeller the blades (1) of which are permanently connected to a rotatably mounted hub (2), c h a r a c t e r i z e d in that the blades (1) of the propeller have a radially displaceable disc (3), which under the influence of a springing means (4) working between the disc (3) and the blade (1) or the hub (2) is kept in a first position relative to the hub (2) as long as the wind propeller remains motionless or rotates slowly but at an increasing rotary speed is successively displaced radially outwards from the hub (2) by the centrifugal force counteracted by the springing means (4) and that the blade (1) as well as the disc (3) belonging to it has one or more through-openings (5, 6) equaLly dispersed over the blade (1) and the disc (3) so that when the disc (3) is in the first said position it covers the opening or the openings (5) in the blade (1) and vice versa, that is to say the blade (1) and the disc (3) create a complete area of action for the wind so that when the disc (3) moves towards the second position caused by an increased wind velocity, said opening or openings (5, 6) in the blade (1) and the disc (3) increasingly coincides.
EP83903607A 1982-11-23 1983-11-02 Device at a wind propeller Withdrawn EP0126114A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8206660A SE436513B (en) 1982-11-23 1982-11-23 DEVICE IN A WINDSCREEN
SE8206660 1982-11-23

Publications (1)

Publication Number Publication Date
EP0126114A1 true EP0126114A1 (en) 1984-11-28

Family

ID=20348705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83903607A Withdrawn EP0126114A1 (en) 1982-11-23 1983-11-02 Device at a wind propeller

Country Status (6)

Country Link
EP (1) EP0126114A1 (en)
DE (1) DE3390366T1 (en)
DK (1) DK302284D0 (en)
NL (1) NL8320348A (en)
SE (1) SE436513B (en)
WO (1) WO1984002163A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PT2550450T (en) * 2010-03-23 2019-02-25 Flavio Francisco Dulcetti Filho Vertical wind turbine with articulated blades
US8016560B2 (en) 2010-09-17 2011-09-13 General Electric Company Wind turbine rotor blade with actuatable airfoil passages
GB2484148A (en) * 2010-10-02 2012-04-04 Duncan James Parfitt Windmill with apertured flexible vanes
US8128364B2 (en) * 2010-12-07 2012-03-06 General Electric Company Wind turbine rotor blade with porous window and controllable cover member
DE102011117176A1 (en) * 2011-10-28 2013-05-02 Voith Patent Gmbh Rotor blade for a water turbine, in particular for a tidal power plant, and method for its operation
KR101387744B1 (en) 2012-03-20 2014-04-22 삼성중공업 주식회사 Wind turbine generator
DE102014203786A1 (en) * 2014-03-03 2015-09-03 Universität Stuttgart Turbine with controllable damping and wave power plant with improved performance

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1501248A (en) * 1918-07-15 1924-07-15 William J H Strong Method of controlling propellers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8402163A1 *

Also Published As

Publication number Publication date
NL8320348A (en) 1985-02-01
WO1984002163A1 (en) 1984-06-07
SE8206660D0 (en) 1982-11-23
DK302284A (en) 1984-06-20
SE8206660L (en) 1984-05-24
DE3390366T1 (en) 1985-07-11
DK302284D0 (en) 1984-06-20
SE436513B (en) 1984-12-17

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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

Designated state(s): AT BE CH DE FR GB LI LU NL SE

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19841024

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JILKEN, LEIF