Abstract: A vertical-axis wind turbine. The vertical-axis wind turbine comprises a central rotatable hub having multiple wingspars to mount multiple airfoils, a pushrod firmly and rigidly positioned via each wingspar to convert a linear kinetic wind energy from the airfoils to the pushrods to the rotational energy of the central rotatable hub, and an axle attached to the central rotatable hub. The vertical-axis wind turbine rotates the multiple airfoils configured with two airfoils per wingspar, wherein at least two airfoils are mounted on each wingspar. The airfoils work when they are blown upon by applying fluid force to the pushrod and wingspar, one airfoil is blown and held into the maximum angle of attack to perform work to be pushed by the wind, and its opposite is blown and held into the minimum angle of attack to pull back in the wind.

Abstract: A wind turbine blade (10) is described having a serrated trailing edge (20). Splitter plates (106) are provided on the blade, to reduce operational noise. Each splitter plate (106) is arranged to extend at least partly into a space in between adjacent serrations. The splitter plates can be formed integrally with the serrations, or attached to existing serrations as a retrofit solution. The serrations with the splitter plates can be provided as a trailing edge panel (108) for attachment to the trailing edge of an existing wind turbine blade.

Abstract: A vertical axis wind turbine structure is provided that comprises an upstanding structure having a plurality of levels, each level supporting a vertical axis wind turbine assembly therein. Each vertical axis wind turbine assembly drives a generator that develops electrical power. The wind turbine assemblies further comprise a plurality of rotor arms, each supporting a louvered vane assembly thereon. The louvered vane assemblies have louvered vanes supported within a frame that adjust based on the wind front direction. Finally, the outer surface of each of level comprises a rotatable outer surface, whereby an opening through the outer surface allows air flow into the interior thereof and across the louvered vane assemblies. The outer surface of the structure and the louvered vane assemblies adjust based on wind front direction. Overall, the present invention provides a new wind turbine construction that is efficient, modular, and reactive to wind conditions.

Abstract: A vane device includes a rotary shaft and a plurality of vane units angularly spaced apart from each other relative to the rotary shaft. Each of the vane units includes a grid frame that has grid spaces, and a plurality of vanes respectively disposed adjacent to the grid spaces. Each vane is swingable between a cover position and an open position. The size of the vanes decreases along a radial direction from a vicinity of the rotary shaft to a distance away from the rotary shaft.

Abstract: A wind generator system with a plurality of lightweight, surface area adjustable airfoil/sail blades. Each blade is triangular or wedge shape with a narrow inner edge and a wide outer edge. Each blade includes an inner frame connected to a rigid mast that extends radially from a hub assembly. Each blade includes a curved outer skin layer that extends over the inner frame and configured into air foil shape with a large curved leading edge and a thin trailing edge. The outer skin layer is secured along its leading edge and removeably attached along its trailing edge to the inner frame. Advertising is printed on the outer skin of at least one blade that is visible. Coupled to the outer skin layer is a first linear actuator that when activated, causes the outer skin layer to fold or unfold thereby changing the blade's surface area. The internal frame may include a second linear actuator and a telescopic mast over which the blade slides to increase or decrease the sweep area of the blades.

Abstract: A system with orbiting axis for converting energy from a fluid includes an inner transmission shaft and an output transmission shaft; a sectorial blade configured to exchange energy with the fluid and connected to the inner transmission shaft by a support element pivotable such that the blade is configured to rotate around an axis of the inner transmission shaft; a for synchronization and transmission of rotation-oscillation movement of the blade and including the inner transmission shaft and the output transmission shaft. The support element is hinged to the inner transmission shaft by a first rotator rigidly connected, at a first extremity, with the support element by a pin and, at a second extremity, to one of the transmission shafts, each blade being configured to perform the rotation-oscillation movement integrally with the support element and always oriented in the direction of the fluid.

Abstract: A wind turbine blade assembly includes a rotary shaft, and a plurality of blade units connected to the rotary shaft and angularly spaced apart from each other. Each blade unit includes a grid frame connected to the rotary shaft and formed with a plurality of grid spaces, a plurality of blade panels swingably connected to the grid frame and corresponding in position to the grid spaces, and a plurality of counterweight members respectively disposed on the swing ends of the blade panels. Each counterweight member includes a soft hollow main body and a counterweight fluid accommodated in the main body.

Abstract: A rope-conveyor structure for supporting plates of a wind or water power generator, in which plates are coupled to a rope at positions spaced apart from each other so that the force of flowing water or wind applied to the plates rotates the rope. The rope-conveyor structure includes couplings which are coupled to the rope between the plates, and connection wires each of which has a predetermined length. Each connection wire is connected at a first end thereof to the corresponding coupling and at a second end thereof to the corresponding plate. The positions of the connection wires can be selectively changed so that each connection wire can support the corresponding plate in either directions. Therefore, the plates can be prevented from being displaced from the correct positions or from twisting, regardless of the direction of flow of the water.

Abstract: A wind mill structure of a lift-type vertical axis wind turbine. The lift-type vertical axis wind turbine includes a vertical shaft and the wind mill includes a plurality of blades and supporting arms. The supporting arms hold the blades, and the blades are connected to the vertical shaft via the supporting arms. A setting angle, formed by a chord of the blades and a tangent line that goes through the center of the blades, ranges from ?12° to 12°. An angle, formed by the chord of the blade and the rotatable supporting arm, ranges from 7° to 100°. The wind mill can maintain relatively stable rotation speeds under wind speeds exceeding the rated wind speed by adjusting the angle of the supporting arms, thereby ensuring stable output from the vertical axis wind turbine.

Abstract: A blade support limb structure of a vertical axis wind power generator includes a fixed support limb (1) and a rotatable support limb (2), one end (21) of the rotatable support limb is connected with one end (22) of the fixed support limb and the rotatable support limb may rotate around it. The structure keeps a wind wheel at stable rotation speed in the case the environmental wind speed exceeds the rated wind speed, thereby to ensure that vertical axis wind power generator outputs constant power. The structure solves a problem of constant power output of the vertical axis wind power generator from hundreds watts to thousands watts, so its applications are wide.

Abstract: A vertical axis wind turbine including a blade having a modular structure, comprising at least two connectable blade sections. Each section has an upper and lower panel with a cavity formed therebetween through which extends a spar.

Abstract: An apparatus and a method used to determine the speed and direction of the wind experienced by a wind turbine are provided. The apparatus comprises at least one sensor fixed to the rotor of the wind turbine, an angular sensor to measure the angular position of the rotor of the wind turbine, and a circuit which converts the relationship between the output of the at least one sensor and the output of the angular sensor into the speed and direction of the wind experienced by the wind turbine. According to the invention, the sensing apparatus can measure the wind speed and direction in three dimensions. In addition, mounting the sensors directly to the rotor of the wind turbine results in a very simple and robust installation. Mounting the sensors directly to the rotor also eliminates the turbulence from the rotor and the nacelle of the wind turbine from affecting the sensors.

Abstract: A wind energy conversion device includes a propeller in which each of the propeller blades includes a proximal (radially inward) non-airfoil mounting section, a medial section and a distal tip section mounted to pivot relative to the medial section about a pitch axis running lengthwise of the blade. At low wind speeds, each tip section and its associated medial section cooperate to provide a single airfoil. When the propeller rpm exceeds a predetermined threshold, each of the tip sections begins to pivot toward a full governing position, which tends to reduce the propeller rpm. To permit wind tracking, the device is mounted to pivot on a vertical axis. The propeller blades are downwind of the vertical axis, and slightly inclined to define a cone diverging in the downwind direction. The electrical power generating components are located upwind of the propeller and centered about the propeller axis, and have a radius less than the length of the proximal blade sections.

Abstract: A wind power plant for producing electrical energy on a large scale, comprising a base, a housing, rotatable on said base around vertical axis. A wind tail, attached to the housing, rotate the housing toward direction of the wind, utilizing the power of the wind, and produces additional tunnel suction to the flow of the wind from front side to back side of the housing. A plurality of turbines, equipped with rotors with wide blades, is mounted inside the housing one above another. Deflectors cover from the wind the front side of the rotors above their axis of rotation while computer controlled governors are covering the remaining front side of the rotors below their axis of rotation, keeping steady the speed of rotation of the rotors. Working surfaces of turbines are covered from heavy snow and during the storm and protected from birds. Power plant saves the area of occupied land, utilizing higher speed of wind on higher elevations.

Abstract: A fluid energy turbine has a radial flow rotor in which fluid driven blades are peripherally distributed about a horizontal axis and in which auxiliary-biased outlet gates are provided for release of high fluid pressures to govern turbine speed such as in high windstorms.

Abstract: A wind turbine for converting wind energy to useable energy having a plurality of overlapping sail members. The sail members extend radially outward from a vertically disposed shaft in three columns positioned equidistantly around the shaft. The overlapping sail members hang downwardly in a naturally biased, vertical orientation so as to block rotational movement of each other in one direction. This configuration allows the wind to engage with the sail members on one side of the shaft to rotate the shaft, and blow past the sail members on the other side of the shaft. Rotation of the cylinder is thus achieved while wind resistance is greatly minimized, regardless of the wind direction. A generator can be rotatably intercoupled with the cylinder to thereby convert the kinetic energy of rotation to useable energy. Each sail member is preferably positioned such that a gap resides between the sail member and the shaft, the gap being at least as wide as the sail member.

Abstract: A fluid energy turbine has a radial flow rotor in which fluid driven blades are peripherally distributed about a horizontal axis and in which auxiliary biased outlet gates are provided for release of high fluid pressures to govern turbine speed such as in high storm winds. The blades additionally may be made featherable to govern the turbine speed by feathering the blades either preceding or after the gate openings or simultaneously as preset by the degree of biasing of both determined by matching to weather conditions in the area of use. In other embodiments, the gates are interconnected to the featherable blades for coordinated operation by means such as cables or rods.

Abstract: A wind turbine is arranged to provide for a front torroidal plate mounted from and spaced relative to a rear solid plate coaxially securing a deflecting cone coextensively and coaxially between the front and rear plate, with a series of equally spaced arcuate impeller blades mounted adjacent a periphery of the front and rear plates exteriorly of the cone to direct air flow through the turbine plates from the cone structure. The impeller also has a fluidic rotation indicator. The indicator is a set of arcuate liquid chambers which contain two different fluids of different colors and specific gravities. When the impeller is stationary, the two different fluids separate, indicating two colors. However, when the impeller rotates, the two fluids mix and indicate a single third color.

Abstract: A convertible air cleaner comprising an elongated enclosure forming an internal cavity. A first opening is at one end of the enclosure and a second opening is at an opposed end of the enclosure and with the openings oriented substantially at 180.degree. from each other. A support structure holds the elongated enclosure at a substantially center axis between said first and second openings. A pivot permits rotation about said center axis between said first and second openings through an arc of at least 180.degree.. An air filter is contained within the enclosure and a fan is positioned within the enclosure for drawing air through said first opening through the internal cavity for filtration by the air filter for exiting to the exterior of the enclosure through the second opening.

Abstract: Water-powered electricity generating apparatus, for use in rivers and other bodies of water having current flow therein, comprises a water wheel and an adjacent platform. The water wheel has a number of blades which are pivotally attached adjacent a first end thereof to vertical rods which extend between the top and bottom of the water wheel. A controllable stop, movable between an upper position in which it may contact a second end of the blade, and a lower position in which contact with the blade is not possible, is provided for each blade. The wheel also comprises a drive gear having downwardly-facing teeth. The drive gear meshes with gears of dynamos carried on the platform adjacent the water wheel.The apparatus is placed in a river or other body of water having current therein. When traveling in an upstream direction, the blades swing freely parallel to the current.

Abstract: A journaled rotor is provided for rotation about an axis to be disposed transverse to a fluid flow path and the rotor includes a plurality of mounting portions spaced radially outwardly from and circumferentially about the axis having a plurality of vane assemblies rotatably mounted therefrom for angular displacement about axis generally paralleling the axis of rotation of the rotor. Vane assembly displacement control structure is operatively connected to the vane assemblies for angularly displacing the vane assemblies relative to the corresponding mounting portions 180 degrees each 360 degrees of angular displacement of the rotor and in directions opposite the direction of angular displacement of the rotor upon rotation of the latter.