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
  • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
  • F03D3/06—Rotors
  • F03D3/062—Rotors characterised by their construction elements
  • F03D3/066—Rotors characterised by their construction elements the wind engaging parts being movable relative to the rotor
  • F03D3/067—Cyclic movements
  • F03D3/068—Cyclic movements mechanically controlled by the rotor structure
• • 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
  • F03D7/0224—Adjusting blade pitch
• • 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
  • F05B2240/00—Components
  • F05B2240/10—Stators
  • F05B2240/12—Fluid guiding means, e.g. vanes
  • F05B2240/124—Cascades, i.e. assemblies of similar profiles acting in parallel
• • 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
  • F05B2240/00—Components
  • F05B2240/10—Stators
  • F05B2240/13—Stators to collect or cause flow towards or away from turbines
  • F05B2240/133—Stators to collect or cause flow towards or away from turbines with a convergent-divergent guiding structure, e.g. a Venturi conduit
• • 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
  • F05B2270/00—Control
  • F05B2270/10—Purpose of the control system
  • F05B2270/101—Purpose of the control system to control rotational speed (n)
  • F05B2270/1011—Purpose of the control system to control rotational speed (n) to prevent overspeed
• • 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
  • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

• Wind driven power generators are under intensive development as energy needs and the costs associated therewith continue to escalate. With the development of wind driven power generators certain needs have become apparent, including the need to provide a generator which overcomes the disadvantage of conventional airscrew or propeller type generators which must be mounted at a substantial height above the surface, are not aesthetically pleasing, are a hazard to airborne wildfowl, and are susceptible to ice accumulation on the propeller blades.
• the present invention provides an improved wind driven power generator.
• the present invention also provides a wind driven power generator which includes a unique rotor or propeller configuration, is compact and less obtrusive than conventional airscrew or propeller type generators and includes a rotor which may be disposed within a shroud or duct for efficiency improvements while minimizing hazards to bird life and while being less susceptible to performance degradation or structural problems associated with ice or snow accumulation, for example.
• a wind driven power generator is provided with a rotor having circumferentially spaced airfoil shaped blades which are arranged in a circular pattern not unlike a so-called paddle wheel and which have a mechanism associated therewith for varying the "lift" of the rotor blades to provide a resultant driving force in response to wind flowing thereover.
• the blades effect rotation of the rotor to provide a useful result, such as driving an electric power generator.
• a wind driven power generator which includes a rotor which is characterized by a unique multi- blade pitch change mechanism for varying blade pitch or angle of attack as the blades rotate about an axis generally parallel to the blade length.
• the multi-blade rotor may be adapted to be connected to one or two electric power generators, or other power generating devices, and the speed of the rotor may be controlled to provide for variable power output and/or at a selected electrical energy characteristic.
• a wind driven power generator which includes a rotor comprising rotor blades which have an airfoil shape and wherein the camber or curvature of the airfoil maybe varied. In this way the "lift" forces exerted by the rotor blades or vanes may be selectively converted into a resultant useful force for driving the rotor.
• An articulated rotor blade configuration, together with a blade camber change mechanism, provides the useful resultant force of the rotor exerted by the blades as the rotor rotates.
• a wind driven power generator is provided which includes rotor speed control means including an embodiment which is self-governing in relation to the velocity of wind flowing over the rotor.
• a wind driven power generator wherein a rotor which is responsive to wind flowing thereover rotates within a duct or shroud to improve rotor efficiency, and minimize the adverse effects of rain, or snow or ice accumulation on the rotor or flow of such through the duct.
• the duct is particularly advantageous in that there are provided paths for the flow of cooling air over one or more electric generators connected to the rotor.
• the rotor duct or shroud is preferably configured to accelerate the flow of air through the duct and the duct is also configured to modify or improve the weather vaning tendency of the generator so that the duct opening is normally oriented to take advantage of the direction of the wind.
• a wind turbine power generator having two or more rows of rotor blades where at least one row is in either fixably or variably adjustable to receive wind flow.
• a wind turbine power generator that may attached to a base portion for positioning among surfaces such building roofs and the like.
• the wind turbine power generator having a concentrator to facilitate air flow to the turbine and the turbine may be provided in a multiple side-to-side arrangement forming an array.
• the wind turbine power generator is fixedly attached to a structure through a support structure having a unique configuration.
• a wind turbine power generator is provided that may be paired with at least one other turbine to form a unit about axis in a stacked arrangement to form a tower-like structure to reduce the overall footprint of a multiple wind-generating system.
• a wind turbine power generator is provided with its axis of rotation oriented vertically that may be present in a side-to-side arrangement and/or with concentrator to direct air flow towards the at least one turbine.
• a wind power turbine generator having governor mechanism in communication with a cam design to regulate rotational velocity of the rotor blades.
• FIGURE 1 is a side view of one preferred embodiment of a wind driven power generator in accordance with the invention
• FIGURE 2 is a perspective view similar to FIGURE 1 ;
• FIGURE 3 is a perspective view of a series of wind turbine power generators each having a concentrator;
• FIGURE 4 is front view similar to FIGURE 3;
• FIGURE 5 is a perspective view of a wind turbine power generator having a base structure
• FIGURE 6 is a front view similar to FIGURE 5;
• FIGURE 7 is a perspective view of a multiple wind power turbine power generators in an embodiment of the present invention.
• FIGURE 8 is a front view similar to FIGURE 7;
• FIGURE 9 is a somewhat schematic perspective view of a wind power turbine generator with a different base structure from that of FIGURE 5;
• FIGURE 10 is a front view similar to FIGURE 9;
• FIGURE 11 is a perspective view of a series of wind turbine power generators of the present invention oriented vertically each in combination with a concentrator;
• FIGURE 12 is another perspective view of the wind turbine power generators similar to FIGURE 11 but having a more frontal aspect showing the rotor blades through the concentrator;
• FIGURE 13 is a perspective view of the wind power turbine power generator of FIGURE 9 with its axis of rotation oriented vertically with an securing attachment;
• FIGURE 14 is a side view of the wind turbine power generator of FIGURE 13 showing the base structure;
• FIGURE 15 is a perspective view of the wind turbine of the present invention with its axis of rotation horizontally-oriented and supported on a mast;
• FIGURE 16 is a front view of the wind turbine of FIGURE 15;
• FIGURE 17 is a perspective view in somewhat generalize form a cam of the wind turbine power generator with the governor mechanism in an intermediate position;
• FIGURE 18 is a generalized partial sectional view of the wind turbine power generator shown in FIGURE 15 with the governor mechanism hi under relatively low forces;
• FIGURE 19 is a generalized partial sectional view of the wind turbine power generator shown in FIGURE 15 with the governor mechanism in under relatively high forces;
• FIGURE 20 is a general partial sectional view of a wind turbine power generator with the governor mechanism under relatively low force and showing a variation of the cam groove as disclosed herein; and FIGURE 21 is another general partial sectional view of the wind turbine power generator of FIGURE 20 with the governor mechanism under relatively high force.
• FIGS. 1 and 2 show wind turbine power generator with its axis of rotation oriented horizontally.
• rotor blade 80 pivots at pin 81 and is connected to arm assembly 74. Movement of rotor blade 80 via arm assembly 74 causes movement of rotor blade 81a via linkage arm 86 about pin A.
• rotor blade 81a may be fixedly attached to arm assembly 74.
• FIGS. 3-6 show an embodiment of wind turbine power generator 20 with its axis of rotation oriented horizontally.
• Wind turbine 20 has end covers 160 and 176, with end cover 160 having outer surface 162 for connection at the general vicinity of the center of gravity of generator 20 about area A to support structure 167 that can accept a base structure 184 (shown in FIG. 5).
• Support structure 167 has slot 170 formed by spaced apart portions 170 and 174 that engage base structure 184.
• the base structure 184 could include spaced apart portions to accept an embodiment of the support structure having a single panel to hold the wind turbine.
• generator 20 is shown with screening connected between and about the periphery of the end covers 160 and 176, that although preferred, is not required for the operation of the generator.
• FIG. 5 shows an embodiment of wind turbine power generator 20 in a multiple side- to-side arrangement and with each having a wind concentrator 188, with an exemplary form shown, in substantial relation thereto to direct airflow to one or more generators.
• concentrator 188 can assume various forms, but it is particularly preferred that the form increase the speed of air flow across the rotor blades of the wind turbine.
• FIGS. 7 and 8 show an embodiment of the wind turbine power generator 20 with its axis of rotation oriented horizontally for mounting on a surface.
• a particularly preferably application of this generator is for attachment to the top of an elevated structure, such as building roof.
• Generator 20 is supported by structure 190 that includes base 192 and end supports 194 and 196 that are for attachment to the outer ends of hub or shaft of the wind turbine.
• the second end of the rotor blade hub or shaft is attached for support to middle support 198 having transverse connector 200 that may be reinforced with one or more braces 201 and end supports 194 and 196 may be reinforced with brace 202 attached to end supports and to base 192 as show in FIG. 7.
• One of ordinary skill in the art would appreciate any suitable bracing structure could be used.
• FIGS. 9 and 10 show an embodiment of the wind turbine power generator 20 with its axis of rotation oriented horizontally.
• Turbine 20 may be paired with another turbine 20 to form a unit 204 about axis 208 (shown) where the inward-facing end of generator shaft is attached to collet 213 about column 210 (see FIG. 10) that is supported by base 212.
• the outer shaft end 221 is attached to outer wall 215 that serves to direct air flow shown by arrow 219 generally towards the open area 217 of unit 204.
• Unit 204 may be provided in an stacked in a vertical arrangement resembling a tower as shown in FIGS. 9 and 10 and optionally having a base like structure 214 to elevate at least one unit 204 above ground.
• FIGS. 11 and 12 show an embodiment of more than one wind turbine power generator 20 with its axis of rotation oriented vertically in a side-to-side arrangement with respect to the direction of wind flow characterizing the front (for all figures) with each generator 20 having about its front a respective concentrator 226.
• concentrator 226 in the general form of a sleeve where the front opening is defined by bottom edge 226, side edges 224 and 230 and top edge 222 that receive air flow and direct towards generator 20.
• Concentrator 226 tapers toward the back to form a narrower back opening (partially shown in FIG. 11) at back portion 219.
• Back portion 219 of top surface 220 and bottom surface 221 are concave with respect to turbine 20 so that the back portion 219 substantially adjacent to the outer periphery of rotation of the rotor blades 81 of turbine 20 to minimize air loss that could reduce wind speed.
• FIGS. 13 and 14 show the power turbine of FIGS. 3- 5 with the axis of rotation oriented vertically.
• FIGS. 15 and 16 show a wind turbine power generator 20 having its axis of rotation oriented horizontally and on-center in relation to support on mast 22.
• turbine 20 includes a pair of turbines each having a horizontal axis of rotation attached to its outward facing ends 246 and 248 to hub that is in turn connected via support links 242 and 244 attached in turn to outer ends 238 and 239 of T-bar 236.
• T-bar 236 may be reinforced with bracing element 240 extending between outer ends 238 and 239.
• End portion 250 may extend directly from mast 22 or be a separate section added to T-bar 236.
• End portion 250 forms a T-shape with extending collet arms 254 that receive the inner ends of the shafts.
• each rotor blade may include winglets 243 at their respective ends.
• FIGS. 17-20 show a modified form of the cam of U.S. Ser. No. 11/505966 filed August 17, 2006 shown best in unmodified form in FIGS. 6 and 8.
• the modified cam mechanism alters the speed at which the rotor blades rotate to prevent undue forces such as excessive torque and vibration from damaging the turbine 20 expected at high revolutions per unit time, hi one embodiment illustrated in FIGS. 17-19, modified cam includes a governor mechanism comprising an arm having a first end or head and a curved second end or tail that is in turn connected to a linkage having an end that is adjacent to the cam and that has a head portion that has a overhang that fits into a slot in a rim of the cam having a recess.
• the linkage extends through the hub and holds the cam against the arm member of the rotor blades.
• the arm head of the governor mechanism moves outwardly away from the shaft through centripetal forces causing the curved end or tail to exert a downward force against the hub and force the cam member away from the arm member.
• Arm member having arm assembly connected for adjustable angle of attack to rotor blade is accessible in elongated slot at its proximal end.
• Ball and bolt depend substantially normally from the proximal end of the arm assembly and the ball slidably engages a cam groove formed by the cam and a second cam rim. In the embodiment shown in FIGS.
• FIGS. 20 and 21 substantially correspond to FIGS 18 and 19 but showing a modified angled cam groove that has an angled portion near the opening of the cam groove and a substantially linear portion.
• the cam groove is linear and the opposing force against the arm assembly is provided by a spring or mechanical linkage between the cam and the hub.

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• Engineering & Computer Science (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)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Wind Motors (AREA)
• Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=41016695

Family Applications (1)

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Cited By (1)

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Citations (2)

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• 2009
  • 2009-02-25 TW TW098106036A patent/TW201000752A/zh unknown
  • 2009-02-25 EP EP09715899A patent/EP2260205A2/de not_active Withdrawn
  • 2009-02-25 WO PCT/US2009/035163 patent/WO2009108714A2/en active Application Filing
  • 2009-02-25 CL CL2009000430A patent/CL2009000430A1/es unknown
  • 2009-02-26 AR ARP090100654A patent/AR070484A1/es unknown

Patent Citations (2)

Non-Patent Citations (1)

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