WO1984002163A1 - Device at a wind propeller - Google Patents

Device at a wind propeller Download PDF

Info

Publication number
WO1984002163A1
WO1984002163A1 PCT/SE1983/000378 SE8300378W WO8402163A1 WO 1984002163 A1 WO1984002163 A1 WO 1984002163A1 SE 8300378 W SE8300378 W SE 8300378W WO 8402163 A1 WO8402163 A1 WO 8402163A1
Authority
WO
WIPO (PCT)
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.)
Ceased
Application number
PCT/SE1983/000378
Other languages
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.)
STAONGAOKONSULT I KALMAR HB
STAANGAAKONSULT KALMAR HB
Original Assignee
STAONGAOKONSULT I KALMAR HB
STAANGAAKONSULT 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 STAONGAOKONSULT I KALMAR HB, STAANGAAKONSULT KALMAR HB filed Critical STAONGAOKONSULT I KALMAR HB
Priority to NL8320348A priority Critical patent/NL8320348A/en
Priority to AU22078/83A priority patent/AU2207883A/en
Publication of WO1984002163A1 publication Critical patent/WO1984002163A1/en
Priority to DK302284A priority patent/DK302284A/en
Anticipated expiration legal-status Critical
Ceased 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

Wind propeller the blades (1) of which are permanently connected to a rotatably mounted hub (2). The invention is characterized in that the blades (1) of the propeller have a radially displaceable disc 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. At an increasing rotary speed the disc (3) is successively displaced radially outwards from the hub (2) to a second position relative to the hub (2) by the centrifugal force counteracted by the springing means (4). 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, 6) in the blade (1) and vice versa, that is to say that the blade (1) and the disc (3) create a complete area of action for the wind. 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 coincide causing the area of action of the blade (1) to successively decrease at an increasing wind velocity.

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.
PCT/SE1983/000378 1982-11-23 1983-11-02 Device at a wind propeller Ceased WO1984002163A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL8320348A NL8320348A (en) 1982-11-23 1983-11-02 EQUIPMENT ON A WINDMILL.
AU22078/83A AU2207883A (en) 1982-11-23 1983-11-02 Device at a wind propeller
DK302284A DK302284A (en) 1982-11-23 1984-06-20 DEVICE FOR A WIND PROPELLER

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
WO1984002163A1 true WO1984002163A1 (en) 1984-06-07

Family

ID=20348705

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1983/000378 Ceased WO1984002163A1 (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) DK302284A (en)
NL (1) NL8320348A (en)
SE (1) SE436513B (en)
WO (1) WO1984002163A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2484148A (en) * 2010-10-02 2012-04-04 Duncan James Parfitt Windmill with apertured flexible vanes
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
EP2550450A4 (en) * 2010-03-23 2014-10-08 Filho Flávio Francisco Dulcetti Vertical wind turbine with articulated blades
DK178193B1 (en) * 2010-12-07 2015-08-03 Gen Electric Wind turbine rotor blade with permeable window and controllable cover element
DE102014203786A1 (en) * 2014-03-03 2015-09-03 Universität Stuttgart Turbine with controllable damping and wave power plant with improved performance
DE102011053712B4 (en) 2010-09-17 2022-12-22 General Electric Company WIND TURBINE ROTOR BLADE WITH ACTUABLE PROFILE PASSAGES

Citations (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

Patent Citations (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

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2550450A4 (en) * 2010-03-23 2014-10-08 Filho Flávio Francisco Dulcetti Vertical wind turbine with articulated blades
DE102011053712B4 (en) 2010-09-17 2022-12-22 General Electric Company WIND TURBINE ROTOR BLADE WITH ACTUABLE PROFILE PASSAGES
GB2484148A (en) * 2010-10-02 2012-04-04 Duncan James Parfitt Windmill with apertured flexible vanes
DK178193B1 (en) * 2010-12-07 2015-08-03 Gen Electric Wind turbine rotor blade with permeable window and controllable cover element
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

Also Published As

Publication number Publication date
SE8206660D0 (en) 1982-11-23
EP0126114A1 (en) 1984-11-28
NL8320348A (en) 1985-02-01
DK302284D0 (en) 1984-06-20
SE436513B (en) 1984-12-17
SE8206660L (en) 1984-05-24
DE3390366T1 (en) 1985-07-11
DK302284A (en) 1984-06-20

Similar Documents

Publication Publication Date Title
US4047834A (en) Horizontal multidirectional turbine windmill
ES8403200A1 (en) Motion responsive wind turbine tower damping
US3938907A (en) Horizontal multidirectional turbine windmill
SE8103054L (en) SPEED LIMITING DEVICE ON A VERTICAL SHADE WIND TURBINE
KR830005484A (en) Wind Tunnel Turbine Wing Pitch Adjustable System
ES8403811A1 (en) Automatic variable speed transmission.
FR2415211A1 (en) STEP REGULATOR FOR WIND TURBINE ROTOR BLADES
WO1984002163A1 (en) Device at a wind propeller
ES8404119A1 (en) Ram air turbine with variable flow passage.
US3217808A (en) Cooling fans
US4313710A (en) Wind motor
SU1537885A1 (en) Carousel-type wind motor
US6041514A (en) Impeller for a hair dryer
JPS5641467A (en) Movable system for propeller blade in fluid velocity variation
SU1048159A1 (en) Wind-driven fan plant
SE433246B (en) WIND ENGINE
SU1601411A1 (en) Rotor of wind motor
JPS575594A (en) Volute fan
SU917583A1 (en) Turbine
SU1137236A1 (en) Wind wheel
FR2290583A1 (en) Wind driven rotor with hinged blades - has horizontal axis of rotation at right angles to wind direction
SU992804A1 (en) Wind driven engine rotor
SU922321A1 (en) Fan
SU592990A1 (en) Automatic air flow regulator
ES482187A1 (en) Improvements in appliances for the use of the dynamic energy of a fluid in motion. (Machine-translation by Google Translate, not legally binding)

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): AT AU CH DE DK FI GB JP NL NO SU US

AL Designated countries for regional patents

Designated state(s): AT BE CF CG CH CM DE FR GA GB LU MR NL SE SN TD TG

RET De translation (de og part 6b)

Ref document number: 3390366

Country of ref document: DE

Date of ref document: 19850711

WWE Wipo information: entry into national phase

Ref document number: 3390366

Country of ref document: DE