WO2020019004A1 - Oscillating blade type turbine - Google Patents

Oscillating blade type turbine Download PDF

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Publication number
WO2020019004A1
WO2020019004A1 PCT/VN2019/000012 VN2019000012W WO2020019004A1 WO 2020019004 A1 WO2020019004 A1 WO 2020019004A1 VN 2019000012 W VN2019000012 W VN 2019000012W WO 2020019004 A1 WO2020019004 A1 WO 2020019004A1
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WO
WIPO (PCT)
Prior art keywords
blade
oscillating
gear
windmill
energy
Prior art date
Application number
PCT/VN2019/000012
Other languages
French (fr)
Inventor
Dinh Thuy TRAN
Hoang Anh Nguyen
Original Assignee
Tran Dinh Thuy
Hoang Anh Nguyen
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 Tran Dinh Thuy, Hoang Anh Nguyen filed Critical Tran Dinh Thuy
Publication of WO2020019004A1 publication Critical patent/WO2020019004A1/en

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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
    • F03D5/00—Other wind motors
    • F03D5/06—Other wind motors the wind-engaging parts swinging to-and-fro and not rotating
    • 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
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/221—Rotors for wind turbines with horizontal axis
    • 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
    • F05B2260/40—Transmission of power
    • F05B2260/403—Transmission of power through the shape of the drive components
    • 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
    • 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

Definitions

  • the invention relates to a windmill which uses wind power for extracting useable energy for the generator and other motors, specifically, the windmill has horizontal axis.
  • wind turbines today are rotary-type rotary wind turbines that are used to build commercial wind farms with high economic efficiency and are popular worldwide.
  • rotary-blades wind turbine generators generally includes: wing (1); wing angle control (2); axis (3); gear box (4); generator (5); outer shell (6); tower pillar (7).
  • rotary-blades wind turbine generators have many disadvantages, such as: the structure uses tower pillar, the whole device located on the top of the tower pillar, so the construction of rotary-blades wind turbine generators of tens of MW is difficult.
  • the purpose of the invention is to provide a type of wind turbine to reduce the investment and operating cost of a windmill.
  • an oscillating blade type windmill According to the present invention, have the advantage of having no tower pillar; a generator is located on the ground; When operating, blades move from low to high, from right to left and vice versa cut across the wind direction.
  • the oscillating blade type windmill of the present invention has larger capacity, due to its larger blade area swept, hence when applying the oscillating blade type windmill of the present invention into commercial, it is easy to build and operate large windmill units and many times more powerful than general wind turbine generators. That leads to lower investment costs, lower wind farm operation costs, and faster payback on investment.
  • the oscillating blade type windmill of the present invention including: one or more layer blades (1), each layer blade has only one blade, the blade moves back and forth - opposite one another and cuts across the wind direction, the blade moves from low to high - from right to left and vice versa; a shaft (3), arranged in a shaft, or in pairs of shafts in a symmetrical casing; a windward angle adjusting apparatus (2) is arranged to support and rotate blade of windmill, for adjusting angle of blade to wind direction; the shaft (3) has a function of receiving energy from the blade (1), transmitting motion to a connecting rod (5.1) of a variable speed mechanical assembly (5); an energy and inertia accumulator/releaser (4) of the blade (1) has a function of accumulating energy when the blade (1) moves out of the equilibrium position (the equilibrium position is the position where the blade (1) in the vertical state), and release energy when the blade (1) has the largest angle of inclination relative to the equilibrium position; a variable speed mechanical assembly (5) which converts the oscillating motion of the
  • the blade (1) includes a plurality of trapezoidal portion (1.1), each of trapezoidal portion (1.1) consists of several small wings (1.2) formed by the vertical and horizontal bars.
  • a variable speed mechanical assembly (5) includes a connecting rod (5.1) is connected to a crankshaft (5.2), the crankshaft includes tooth for engaging with a gear (5.3), is attached to an engine (electrical, or hydraulic, or pneumatic engine) to start the windmill or folded down the blade (1), wherein, the crankshaft also has a function as a flywheel and a gear; a gear (5.3) for accelerating rotation; an universal joint (5.4) is arranged between two shafts of the gear (5.3), and a gear (5.5); the gear (5.5) is engaged with a motor (6), wherein, the gear (5.5) and also has a function as a flywheel.
  • the oscillating blade type windmill further includes a balance weight (7) for balancing weight of blade (1), which contributes to control and helps blade (1) operate efficiently.
  • Fig. 1 is a schematic view of a basic structure of a general rotary-blades wind turbine generator.
  • Fig. 2 is a schematic view of a general rotary-blades wind turbine generator with rotating blades, which are rotated across the wind direction.
  • the generator is located on the ground but is still using tower pillar, wind turbine and related equipment placed on the top of the tower pillar.
  • Fig. 3 is a schematic view of a general rotary-blades wind turbine generator with folding blades downstream of the wind direction, but the generator is still using tower pillar, wind turbine and related equipment placed on the top of the tower pillar.
  • Fig. 4 is a plan view of the oscillating blade type windmill of the present invention.
  • Fig. 5 is a side view of the oscillating blade type windmill of the present invention, which includes two blade layers and a tower pillar arranges on the sea, however, the tower pillar has a much shorter than the blade length.
  • Fig. 6 is a side view of the oscillating blade type windmill of the present invention, which includes two blade layers.
  • Fig. 7 is a side view of the oscillating blade type windmill of the present invention, which includes four blade layers.
  • Fig. 8 is a side view showing the basic construction of a reciprocating of the oscillating, four-wing reciprocating wind-driven wind engine, using only one motor and not using counterweight.
  • Fig. 9 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: a first blade - a second blade at the bottom begins to move high with increasing speed, a third blade - a fourth blade on the high downward movement with slower speed and opposite direction.
  • Fig. 10 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: the third blade - the fourth blade at the bottom begins to move high with increasing speed, the first blade - the second blade on the high downward movement with slower speed and opposite direction.
  • Fig. 1 1 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: a first blade - a second blade at the bottom begins to move high with increasing speed, a third blade - a fourth blade on the high downward movement with slower speed and opposite direction.
  • Fig. 12 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: the third blade - the fourth blade at the bottom begins to move high with increasing speed, the first blade - the second blade on the high downward movement with slower speed and opposite direction.
  • Fig. 13 is a schematic view of the blades are low down close to the ground when needed for repairing, avoiding lightning, etc. of the oscillating blade type windmill of the present invention.
  • Fig. 14 is a schematic view of the blades are low down close to the ground and downstream of the wind to prevent the cyclonic of the oscillating blade type windmill of the present invention.
  • Fig. 15 is a schematic view of the comparison of the swept area between the general rotary-blades wind turbine generator and the oscillating blade type windmill of the present invention. At the same height, but the area of the swept blades of the oscillating blade type windmill, which is several times greater than that of the general rotary-blades wind turbine generator.
  • the oscillating blade type windmill includes one or more layer blades 1, an windward angle adjusting apparatus 2, a shaft 3, an energy and inertia accumulator/releaser 4, a variable speed mechanical assembly 5, a motor 6.
  • the blade 1 when the activity will move back and forth: from high to low, from low to high, from right to left and vice versa.
  • the blade 1 includes a plurality of trapezoidal portion 1.1, each of trapezoidal portion 1.1 consists of several small wings 1.2 formed by the vertical and horizontal bars.
  • the blade 1 has a function of converting wind energy into mechanical power. When the wind is too strong, or when the blade needs to be repaired, or when there is thunder, the blade be able to be lowered to the ground, to folded downstream of the wind
  • a windward angle adjusting apparatus 2 which is arranged at the root of blade, support and rotate blade of windmill, for adjusting angle of blade to wind direction.
  • a windward angle adjusting apparatus 2 used one of the following structures: mechanical, electrical, or hydraulic structure.
  • a shaft 3 is arranged in a shaft, or in pairs of shafts in a symmetrical casing.
  • the shaft 3 has a function of receiving energy from the blades 1, transmitting motion to a connecting rod 5.1 of the variable speed mechanical assembly 5.
  • An energy and inertia accumulator/releaser 4 of the blade 1 has a function of accumulating energy when the blades 1 moves out of the equilibrium position (the equilibrium position is the position where the blades 1 in the vertical state), and release energy when the blade 1 has the largest angle of inclination relative to the equilibrium position.
  • An energy and inertia accumulator/releaser 4 used one of the following structures: hydraulic, pneumatic, spring, that is placed in various positions to direct or indirect force interaction to the blade 1 and shaft 3.
  • a variable speed mechanical assembly 5 is arranged between the shaft 3 and the motor 6, which has a function of converting the oscillating motion of the blade 1 into rotary motion and increase the rotation speed.
  • the variable speed mechanical assembly 5 includes a connecting rod 5.1 is connected to a crankshaft 5.2, the crankshaft includes tooth for engaging with a gear 5.3, is attached to an engine (electrical, or hydraulic, or pneumatic engine) to start the windmill or folded down the blade 1, wherein, the crankshaft also has a function as a flywheel and a gear; a gear 5.3 for accelerating rotation; an universal joint 5.4 is arranged between two shafts of the gear 5.3, and a gear 5.5; the gear 5.5 is engaged with a motor 6, wherein, the gear 5.5 and also has a function as a flywheel.
  • the windmill can also include a balance weight 7, which has a function of balancing weight of blade 1, which contributes to control and helps blade 1 operate efficiently.
  • the balance weight 7 is able to change center of gravity of the blade 1, the balance weight 7 is able to change the weight due to the arrangement of electrical or hydraulic equipment in the balance weight 7.
  • the balance weight 7 is heavy, so the balance weight is rarely used.
  • An outer shell 8 has a function of covering, arranging, protecting parts of windmill, such as, mechanical equipment; electrical equipment; measurements wind, wind direction, lightning warning; control equipment: electromechanical, hydraulic, electronic controller.
  • the outer shell 8 can be placed on the ground or positioned on the top of tower pillar 9, in the case of manufacture a windmill on the sea, lakes, rivers, etc. Wherein, the height of the tower pillar 9 is much shorter than the length of the blade 1.
  • the tower pillar 9 has a function of keeping the equipment arranged on the top of the tower pillar from falling to the ground / water.
  • Fig. 8 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: a first blade - a second blade at the bottom begins to move high with increasing speed, a third blade - a fourth blade on the high downward movement with slower speed and opposite direction.
  • Fig. 9 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: the third blade - the fourth blade at the bottom begins to move high with increasing speed, the first blade - the second blade on the high downward movement with slower speed and opposite direction.
  • Fig. 8 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: the third blade - the fourth blade at the bottom begins to move high with increasing speed, the first blade - the second blade on the high downward movement with slower speed and opposite direction.
  • FIG. 10 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: a first blade - a second blade at the bottom begins to move high with increasing speed, a third blade - a fourth blade on the high downward movement with slower speed and opposite direction.
  • Fig. 11 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: the third blade - the fourth blade at the bottom begins to move high with increasing speed, the first blade - the second blade on the high downward movement with slower speed and opposite direction.
  • Fig. 12 is a schematic view of the blades are low down close to the ground when needed for repairing, avoiding lightning, etc.
  • Fig. 13 is a schematic view of the blades are low down close to the ground and downstream of the wind to prevent the cyclonic of the oscillating blade type windmill of the present invention.
  • Fig. 14 is a schematic view of the comparison of the swept area between the general rotary-blades wind turbine generator and the oscillating blade type windmill of the present invention. At the same height, but the area of the swept blades of the oscillating blade type windmill, which is several times greater than that of the general rotary-blades wind turbine generator.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (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

The invention relates to an oscillating blade type windmill includes one or more layer blades moving in opposite directions, cutting off the windward and each layer blade having only one blade. The oscillating blade type windmill according to the present invention comprises a windward angle adjusting apparatus (2) is arranged at the root of blade (1) and shaft (3), an energy and inertia accumulator/releaser (4) of the blade (1) for accumulating energy when the blade (1) moves out of the equilibrium position (the equilibrium position is the position where the blade (1) in the vertical state), and release energy when the blade (1) has the largest angle of inclination relative to the equilibrium position, a variable speed mechanical assembly (5) converts the oscillating motion of the blade (1) into a rotary motion and increases the rotation speed, which is located between the shaft (3) and the motor (6). The windmill further includes a balance weight (7) for balancing weight; of blade (1). The outer shell (8) is located on the ground and automatically rotates blade (1) to windward by a windward angle adjusting apparatus (2), or located on a tower pillar (9), while the windmill using on the sea, lakes or rivers. Wherein the tower pillar (9) is shorter than the blade length (1) many times.

Description

OSCILLATING BLADE TYPE TURBINE FIELD OF THE INVENTION
The invention relates to a windmill which uses wind power for extracting useable energy for the generator and other motors, specifically, the windmill has horizontal axis.
BACKGROUND OF THE INVENTION
As is well known, wind turbines today are rotary-type rotary wind turbines that are used to build commercial wind farms with high economic efficiency and are popular worldwide.
Referring to the figures from Fig. 1 to Fig. 3, rotary-blades wind turbine generators generally includes: wing (1); wing angle control (2); axis (3); gear box (4); generator (5); outer shell (6); tower pillar (7).
With the above structure, rotary-blades wind turbine generators have many disadvantages, such as: the structure uses tower pillar, the whole device located on the top of the tower pillar, so the construction of rotary-blades wind turbine generators of tens of MW is difficult.
At present, researchers and manufacturers have a solution: generator is attached directly to wind turbine shafts; the generator is located on the ground; the blades of the wind turbine generator are able to folded downstream of the wind direction. But the basic structure remains unchanged, which is still used a tower pillar, blades and equipment related to wind engines are "arranging" on the high.
For the reasons mentioned above, the cost of wind power investment is very high, the payback of wind power investment lasted more than ten years.
SUMMARY OF THE INVENTION The purpose of the invention is to provide a type of wind turbine to reduce the investment and operating cost of a windmill.
To achieve that goal, the invention provides an oscillating blade type windmill. An oscillating blade type windmill according to the present invention have the advantage of having no tower pillar; a generator is located on the ground; When operating, blades move from low to high, from right to left and vice versa cut across the wind direction.
Considering the same height for all types of general wind turbine generators (vertical and horizontal), the oscillating blade type windmill of the present invention has larger capacity, due to its larger blade area swept, hence when applying the oscillating blade type windmill of the present invention into commercial, it is easy to build and operate large windmill units and many times more powerful than general wind turbine generators. That leads to lower investment costs, lower wind farm operation costs, and faster payback on investment.
The oscillating blade type windmill of the present invention including: one or more layer blades (1), each layer blade has only one blade, the blade moves back and forth - opposite one another and cuts across the wind direction, the blade moves from low to high - from right to left and vice versa; a shaft (3), arranged in a shaft, or in pairs of shafts in a symmetrical casing; a windward angle adjusting apparatus (2) is arranged to support and rotate blade of windmill, for adjusting angle of blade to wind direction; the shaft (3) has a function of receiving energy from the blade (1), transmitting motion to a connecting rod (5.1) of a variable speed mechanical assembly (5); an energy and inertia accumulator/releaser (4) of the blade (1) has a function of accumulating energy when the blade (1) moves out of the equilibrium position (the equilibrium position is the position where the blade (1) in the vertical state), and release energy when the blade (1) has the largest angle of inclination relative to the equilibrium position; a variable speed mechanical assembly (5) which converts the oscillating motion of the blade (1) into a rotary motion and increases the rotation speed; a motor (6) has a function of converting the wind energy into electricity or a power.
In a preferred embodiment, the blade (1) includes a plurality of trapezoidal portion (1.1), each of trapezoidal portion (1.1) consists of several small wings (1.2) formed by the vertical and horizontal bars.
In a preferred embodiment, a variable speed mechanical assembly (5) includes a connecting rod (5.1) is connected to a crankshaft (5.2), the crankshaft includes tooth for engaging with a gear (5.3), is attached to an engine (electrical, or hydraulic, or pneumatic engine) to start the windmill or folded down the blade (1), wherein, the crankshaft also has a function as a flywheel and a gear; a gear (5.3) for accelerating rotation; an universal joint (5.4) is arranged between two shafts of the gear (5.3), and a gear (5.5); the gear (5.5) is engaged with a motor (6), wherein, the gear (5.5) and also has a function as a flywheel.
In a preferred embodiment, the oscillating blade type windmill further includes a balance weight (7) for balancing weight of blade (1), which contributes to control and helps blade (1) operate efficiently.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a schematic view of a basic structure of a general rotary-blades wind turbine generator.
Fig. 2 is a schematic view of a general rotary-blades wind turbine generator with rotating blades, which are rotated across the wind direction. The generator is located on the ground but is still using tower pillar, wind turbine and related equipment placed on the top of the tower pillar.
Fig. 3 is a schematic view of a general rotary-blades wind turbine generator with folding blades downstream of the wind direction, but the generator is still using tower pillar, wind turbine and related equipment placed on the top of the tower pillar.
Fig. 4 is a plan view of the oscillating blade type windmill of the present invention.
Fig. 5 is a side view of the oscillating blade type windmill of the present invention, which includes two blade layers and a tower pillar arranges on the sea, however, the tower pillar has a much shorter than the blade length.
Fig. 6 is a side view of the oscillating blade type windmill of the present invention, which includes two blade layers.
Fig. 7 is a side view of the oscillating blade type windmill of the present invention, which includes four blade layers.
Fig. 8 is a side view showing the basic construction of a reciprocating of the oscillating, four-wing reciprocating wind-driven wind engine, using only one motor and not using counterweight.
Fig. 9 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: a first blade - a second blade at the bottom begins to move high with increasing speed, a third blade - a fourth blade on the high downward movement with slower speed and opposite direction.
Fig. 10 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: the third blade - the fourth blade at the bottom begins to move high with increasing speed, the first blade - the second blade on the high downward movement with slower speed and opposite direction.
Fig. 1 1 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: a first blade - a second blade at the bottom begins to move high with increasing speed, a third blade - a fourth blade on the high downward movement with slower speed and opposite direction.
Fig. 12 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: the third blade - the fourth blade at the bottom begins to move high with increasing speed, the first blade - the second blade on the high downward movement with slower speed and opposite direction.
Fig. 13 is a schematic view of the blades are low down close to the ground when needed for repairing, avoiding lightning, etc. of the oscillating blade type windmill of the present invention.
Fig. 14 is a schematic view of the blades are low down close to the ground and downstream of the wind to prevent the cyclonic of the oscillating blade type windmill of the present invention.
Fig. 15 is a schematic view of the comparison of the swept area between the general rotary-blades wind turbine generator and the oscillating blade type windmill of the present invention. At the same height, but the area of the swept blades of the oscillating blade type windmill, which is several times greater than that of the general rotary-blades wind turbine generator.
DETAILED DESCRIPTION OF THE INVENTION
As shown in the figures: Fig. 4, Fig. 5, Fig. 6, Fig. 7, the oscillating blade type windmill includes one or more layer blades 1, an windward angle adjusting apparatus 2, a shaft 3, an energy and inertia accumulator/releaser 4, a variable speed mechanical assembly 5, a motor 6.
Wherein, the blade 1, when the activity will move back and forth: from high to low, from low to high, from right to left and vice versa. The blade 1 includes a plurality of trapezoidal portion 1.1, each of trapezoidal portion 1.1 consists of several small wings 1.2 formed by the vertical and horizontal bars. The blade 1 has a function of converting wind energy into mechanical power. When the wind is too strong, or when the blade needs to be repaired, or when there is thunder, the blade be able to be lowered to the ground, to folded downstream of the wind
A windward angle adjusting apparatus 2, which is arranged at the root of blade, support and rotate blade of windmill, for adjusting angle of blade to wind direction. A windward angle adjusting apparatus 2 used one of the following structures: mechanical, electrical, or hydraulic structure.
A shaft 3 is arranged in a shaft, or in pairs of shafts in a symmetrical casing. The shaft 3 has a function of receiving energy from the blades 1, transmitting motion to a connecting rod 5.1 of the variable speed mechanical assembly 5.
An energy and inertia accumulator/releaser 4 of the blade 1 has a function of accumulating energy when the blades 1 moves out of the equilibrium position (the equilibrium position is the position where the blades 1 in the vertical state), and release energy when the blade 1 has the largest angle of inclination relative to the equilibrium position. An energy and inertia accumulator/releaser 4 used one of the following structures: hydraulic, pneumatic, spring, that is placed in various positions to direct or indirect force interaction to the blade 1 and shaft 3.
A variable speed mechanical assembly 5 is arranged between the shaft 3 and the motor 6, which has a function of converting the oscillating motion of the blade 1 into rotary motion and increase the rotation speed. The variable speed mechanical assembly 5 includes a connecting rod 5.1 is connected to a crankshaft 5.2, the crankshaft includes tooth for engaging with a gear 5.3, is attached to an engine (electrical, or hydraulic, or pneumatic engine) to start the windmill or folded down the blade 1, wherein, the crankshaft also has a function as a flywheel and a gear; a gear 5.3 for accelerating rotation; an universal joint 5.4 is arranged between two shafts of the gear 5.3, and a gear 5.5; the gear 5.5 is engaged with a motor 6, wherein, the gear 5.5 and also has a function as a flywheel. A motor 6 used one or a plurality of the following engine: generator, water pump, air compressor, propeller, etc. are arranged around gear 5.5. In case of using only one generator, the gear 5.5 will be replaced by a generator. The function of the motor 6 is to convert the mechanical power into a power, etc.
The windmill can also include a balance weight 7, which has a function of balancing weight of blade 1, which contributes to control and helps blade 1 operate efficiently. The balance weight 7 is able to change center of gravity of the blade 1, the balance weight 7 is able to change the weight due to the arrangement of electrical or hydraulic equipment in the balance weight 7. However, when manufacturing a large-capacity wind turbine, the balance weight 7 is heavy, so the balance weight is rarely used.
An outer shell 8 has a function of covering, arranging, protecting parts of windmill, such as, mechanical equipment; electrical equipment; measurements wind, wind direction, lightning warning; control equipment: electromechanical, hydraulic, electronic controller. The outer shell 8 can be placed on the ground or positioned on the top of tower pillar 9, in the case of manufacture a windmill on the sea, lakes, rivers, etc. Wherein, the height of the tower pillar 9 is much shorter than the length of the blade 1. The tower pillar 9 has a function of keeping the equipment arranged on the top of the tower pillar from falling to the ground / water.
The operation of the oscillating blade type windmill according to the present invention will be illustrated in the drawings from Figures 8 to 14. Fig. 8 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: a first blade - a second blade at the bottom begins to move high with increasing speed, a third blade - a fourth blade on the high downward movement with slower speed and opposite direction. Fig. 9 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: the third blade - the fourth blade at the bottom begins to move high with increasing speed, the first blade - the second blade on the high downward movement with slower speed and opposite direction. Fig. 10 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: a first blade - a second blade at the bottom begins to move high with increasing speed, a third blade - a fourth blade on the high downward movement with slower speed and opposite direction. Fig. 11 is a schematic view of the moving blades of the oscillating blade type windmill of the present invention, which includes four blades: the third blade - the fourth blade at the bottom begins to move high with increasing speed, the first blade - the second blade on the high downward movement with slower speed and opposite direction. Fig. 12 is a schematic view of the blades are low down close to the ground when needed for repairing, avoiding lightning, etc. of the oscillating blade type windmill of the present invention. Fig. 13 is a schematic view of the blades are low down close to the ground and downstream of the wind to prevent the cyclonic of the oscillating blade type windmill of the present invention. Fig. 14 is a schematic view of the comparison of the swept area between the general rotary-blades wind turbine generator and the oscillating blade type windmill of the present invention. At the same height, but the area of the swept blades of the oscillating blade type windmill, which is several times greater than that of the general rotary-blades wind turbine generator.

Claims

1. An oscillating blade type windmill includes:
- one or more layer blades, each layer blades has only one blade (1), the blade (1) moves back and forth - opposite one another and cuts across the wind direction, the blade moves from low to high - from right to left and vice versa;
- a windward angle adjusting apparatus (2) is arranged to support and rotate blade of windmill, for adjusting angle of blade to wind direction;
- a shaft (3), arranged in a shaft, or in pairs of shafts in a symmetrical casing; the shaft (3) has a function of receiving energy from the blade (1), transmitting motion to a connecting rod (5.1) of a variable speed mechanical assembly (5);
- an energy and inertia accumulator/releaser (4) of the blade (1) has a function of accumulating energy when the blade (1) moves out of the equilibrium position (the equilibrium position is the position where the blade (1) in the vertical state), and release energy when the blade (1) has the largest angle of inclination relative to the equilibrium position;
- a variable speed mechanical assembly (5) which converts the oscillating motion of the blade (1) into a rotary motion and increases the rotation speed;
- a motor (6) has a function of converting the wind energy into electricity or a power.
2. An oscillating blade type windmill according to claim 1 , wherein the blade (1) includes a plurality of trapezoidal portion (1.1), each of trapezoidal portion (1.1) consists of several small wings (1.2) formed by the vertical and horizontal bars.
3. An oscillating blade type windmill according to claim 1 , wherein a variable speed mechanical assembly (5) includes a connecting rod (5.1) is connected to a crankshaft (5.2), the crankshaft includes tooth for engaging with a gear (5.3), is attached to an engine (electrical, or hydraulic, or pneumatic engine) to start the windmill or folded down the blade (1), wherein, the crankshaft also has a function as a flywheel and a gear; a gear (5.3) for accelerating rotation; an universal joint (5.4) is arranged between two shafts of the gear (5.3), and a gear (5.5); the gear (5.5) is engaged with a motor (6), wherein, the gear (5.5) and also has a function as a flywheel.
4. An oscillating blade type windmill according to claim 1 , the oscillating blade type windmill further includes a balance weight (7) for balancing weight of blade (1), which contributes to control and helps blade (1) operate efficiently.
PCT/VN2019/000012 2018-07-19 2019-07-19 Oscillating blade type turbine WO2020019004A1 (en)

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VN1-2018-03142 2018-07-19
VN201803142 2018-07-19

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GB2604674A (en) * 2021-03-11 2022-09-14 Katrick Tech Limited Energy harvesting device, system and method of manufacture
WO2022189790A1 (en) * 2021-03-11 2022-09-15 Katrick Technologies Limited Energy harvesting device, system and method of manufacture

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US20080036214A1 (en) * 2006-08-14 2008-02-14 Edwin Newman Wind energy using a sail and a spring
WO2009041819A2 (en) * 2007-09-28 2009-04-02 Tenca Device for generating power from wind flow or water flow
US20090224553A1 (en) * 2008-03-04 2009-09-10 Johnnie Williams Oscillating Windmill
GB2493166A (en) * 2011-07-26 2013-01-30 Khalil Abu Al-Rubb Sail-type turbine blade with buoyant structure, adjustable tip, flexible reinforcement, tip cap and uncovered non-working parts
FR3037621A1 (en) * 2015-06-19 2016-12-23 Manuel Villeneuve SENSOR DEVICE, ADVANTAGELY OF THE WIND OR HYDROLIAN GENUS, FOR CAPTURING THE KINETIC ENERGY OF A FLUID FLOW

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US20080036214A1 (en) * 2006-08-14 2008-02-14 Edwin Newman Wind energy using a sail and a spring
WO2009041819A2 (en) * 2007-09-28 2009-04-02 Tenca Device for generating power from wind flow or water flow
US20090224553A1 (en) * 2008-03-04 2009-09-10 Johnnie Williams Oscillating Windmill
GB2493166A (en) * 2011-07-26 2013-01-30 Khalil Abu Al-Rubb Sail-type turbine blade with buoyant structure, adjustable tip, flexible reinforcement, tip cap and uncovered non-working parts
FR3037621A1 (en) * 2015-06-19 2016-12-23 Manuel Villeneuve SENSOR DEVICE, ADVANTAGELY OF THE WIND OR HYDROLIAN GENUS, FOR CAPTURING THE KINETIC ENERGY OF A FLUID FLOW

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2604674A (en) * 2021-03-11 2022-09-14 Katrick Tech Limited Energy harvesting device, system and method of manufacture
WO2022189790A1 (en) * 2021-03-11 2022-09-15 Katrick Technologies Limited Energy harvesting device, system and method of manufacture
GB2604674B (en) * 2021-03-11 2023-05-31 Katrick Tech Limited Energy harvesting device, system and method of manufacture

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