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4563results about "Water wheels" patented technology
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Expandable impeller pump
ActiveUS7393181B2Easy to compressReduced form requirementsPropellersEngine manufactureImpellerEngineering
An impeller according to an example of the present invention comprises a hub, and at least one blade supported by the hub. The impeller has a deployed configuration in which the blade extends away from the hub, and a stored configuration in which the impeller is radially compressed, for example by folding the blade towards the hub. The impeller may comprise a plurality of blades, arranged in blade rows, to facilitate radial compression of the blades. The outer edge of a blade may have a winglet, and the base of the blade may have an associated indentation to facilitate folding of the blade.
Owner:PENN STATE RES FOUND +2
Heart assist device with expandable impeller pump
An impeller includes a hub and at least one blade supported by the hub. The impeller has a stored configuration in which the blade is compressed so that its distal end moves towards the hub, and a deployed configuration in which the blade extends away from the hub. The impeller may be part of a pump for pumping fluids, such as pumping blood within a patient. A blood pump may include a cannula having a proximal portion with a fixed diameter, and a distal portion with an expandable diameter. The impeller may reside in the expandable portion of the cannula. The cannula may have a compressed diameter which allows it to be inserted percutaneously into a patient. Once at a desired location, the expandable portion of the cannula may be expanded and the impeller expanded to the deployed configuration. A flexible drive shaft may extend through the cannula for rotationally driving the impeller within the patient's body.
Owner:PENN STATE RES FOUND +2
Low solidity turbofan
A turbofan includes a row of fan blades extending from a supporting disk inside an annular casing. Each blade includes an airfoil having opposite pressure and suction sides extending radially in span between a root and tip and axially in chord between leading and trailing edges. Adjacent airfoils define corresponding flow passages therebetween for pressurizing air. Each airfoil includes stagger increasing between the root and tip, and the flow passage has a mouth between the airfoil leading edge and the suction side of an adjacent airfoil and converges to a throat aft from the mouth. The row includes no more than twenty fan blades having low tip solidity for increasing the width of the passage throat.
Owner:GENERAL ELECTRIC CO
Deicing device for wind turbine blades
Methods and Apparatuses for deicing a wind turbine blade are described herein. In one embodiment, an exemplary process includes detecting an icy condition on a wind turbine blade and causing at least a portion of the wind turbine blade to vibrate, causing the ice built up on the wind turbine blade to break off.
Owner:GENERAL ELECTRIC CO
Airfoil shape for a turbine bucket
InactiveUS6854961B2Improve performanceReduction of thermalEngine manufactureOther chemical processesTurbine bladeEngineering
First stage turbine buckets have airfoil profiles substantially in accordance with Cartesian coordinate values of X, Y and Z set forth Table I wherein X and Y values are in inches and the Z values are non-dimensional values from 0 to 1 convertible to Z distances in inches by multiplying the Z values by the height of the airfoil in inches. The X and Y values are distances which, when connected by smooth continuing arcs, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape. The X, Y and Z distances may be scalable as a function of the same constant or number to provide a scaled up or scaled down airfoil section for the bucket. The nominal airfoil given by the X, Y and Z distances lies within an envelop of ±0.055 inches in directions normal to the surface of the airfoil.
Owner:GENERAL ELECTRIC CO
Impeller assembly for centrifugal pumps
InactiveUS20030231959A1Shorten the time periodExpedite evacuationPropellersRotary propellersEngineeringEye opening
An impeller assembly for centrifugal pumps that enables self-priming in a relatively short time period includes an impeller and at least one winglet (e.g., six winglets with a trapezium cross-sectional shape). The impeller includes an impeller body with an eye opening therein. The eye opening is configured for the passage of a fluid (e.g., water) therethrough when the impeller assembly is in use. The impeller body also includes at least one vane, with a leading end, disposed about the eye opening. The at least one winglet is positioned to protrude into the eye opening of the impeller body and may, for example, be coupled to the leading end of the vane.
Owner:HACKETT WILLIAM FRANKLIN JR
Wind Turbines and Other Rotating Structures with Instrumented Load-Sensor Bolts or Instrumented Load-Sensor Blades
A turbine includes a turbine blade, a plurality of sensors, a wireless sensor module, a data aggregator, and a blade pitch control unit. The plurality of sensors are distributed in a plurality of locations on the turbine blade suitable for determining a moment of the turbine blade. The sensor module is configured to transmit data to the data aggregator to determine the moment. The data aggregator is configured to provide an output to the blade pitch control unit. The blade pitch control unit is configured to adjust pitch of the turbine blade based on the moment.
Owner:LORD CORP
Windmill and windmill control method
A windmill includes a freely rotatable revolution shaft, a plurality of pairs of pivotal support rods provided at the revolution shaft, and wind receiving blades respectively and rotatably set between the pivotal support rods with wind receiving blade shafts. The windmill is applied to the driving of a lifting pump, a generator and the like by employing revolution driving force. An anemometer / anemoscope measures wind velocity and direction. A servo motor controls the direction of the wind receiving blades based on the detected velocity and direction. Various methods of control are also provided.
Owner:HIRAI TETSUO
Fan impeller
A fan impeller having fan blades, a base plate, a support ring and fasteners to releasably hold the fan blades between the base plate and the support ring. The base a plate includes channels each having two or more sockets that receive and releasably seat at least a portion of the fan blade. The position of the fan blade relative the axis of rotation of the impeller can be selected from the two or more sockets. The support ring includes grooves in which at least a portion of the fan blade releasably seats to hold the fan blades static relative the base plate and the support ring. The fasteners can extend between the base plate and the support ring to releasably hold the two or more blades.
Owner:KURZ KASCH
Wind turbine blades with trailing edge serrations
A wind generator and turbine blade includes a trailing edge having several serrations, a length of the serrations in each of a plurality of sections of the trailing edge is between approximately 10% and 40% of a mean chord for the corresponding section; and a length to width ratio of each of the serrations is between approximately 1:1 to 4:1.
Owner:GENERAL ELECTRIC CO
Variable diameter wind turbine rotor blades
A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The rotor blades on the wind turbine are able to adjust length by extensions nested within or containing the base blade. The blades can have more than one extension in a variety of configurations. A cable winching system, a hydraulic system, a pneumatic system, inflatable or elastic extensions, and a spring-loaded jack knife deployment are some of the methods of adjustment. The extension is also protected from lightning by a grounding system.
Owner:GENERAL ELECTRIC CO
Fan assembly
InactiveUS20100226787A1Emission reductionWide operating speed rangePump componentsLighting and heating apparatusEngineeringSurface shape
A fan assembly for creating an air current includes an air outlet mounted on a stand. The stand includes a base and a body tiltable relative to the base. Each of the base and the body has an outer surface shaped so that adjoining portions of the outer surfaces are substantially flush when the body is in the untilted position.
Owner:DYSON TECH LTD
System for modulating plant growth or attributes
ActiveUS20100115830A1Saving electrical energy inputOptimal and maximal photosynthetic capacityOptical radiation measurementPropellersGrowth plantControl signal
A system (1) for modulating growth or attributes of at least one part (2) of one or more plants comprising chlorophyll is disclosed. The system (1) comprises at least one light emitting device (3), such as a light emitting diode (LED), for irradiating the at least one part (2), at least one light sensor (4) for picking up light from the at least one part (2), communication capabilities (5) for facilitating communication between the at least one light sensor (4), the at least one light emitting device, and a processor (6). The processor (6) reads data from the at least one light sensor (4) via the communication capabilities (5), generates a control signal based on the data and a reference, and then controls, based on the control signal, the at least one light emitting device (3) via the communication capabilities in order to modulate plant growth or plant attributes.
Owner:HELIOSPECTRA
Enhancements to high efficiency ceiling fan
InactiveUS6884034B1Reduce power consumptionMore energy efficientPropellersSpace heating and ventilationCeiling fanWatt
Twisted ceiling fan blades for low, medium and high speed operation of less than approximately 250 rpm. The novel blades twisted blades can be configured for 60″ and 64″ diameter fans, and have less blades (3 for example) than conventional flat type bladed fans having 4, 5 blades and have greater air flow and less power draw results than the conventional flat 54 inch fans. Any of the novel twisted blades of 54″, 60″ and 64″ can be run at reduced speeds, drawing less Watts than conventional fans and still perform better with more air flow and less problems than conventional flat type conventional blades.
Owner:UNIV OF CENT FLORIDA RES FOUND INC
Rotatable axial fan
InactiveUS20090214341A1Increase fan speedReduce fan speedPropellersRotary propellersHorizontal axisEngineering
The present disclosure provides a novel apparatus for the movement of air. Specifically, the apparatus is an axial fan assembly which is rotatable about a horizontal axis to orient the axial fan in a vertical position, a horizontal position, or positions in between. The axial fan can be adjusted and selectively fixed in a particular orientation. The height of the axial fan is also adjustable. The vertical support member comprises a telescoping mechanism whereby the length of the vertical support member is adjustable and can be selectively fixed at a particular length.
Owner:CRAIG TREVOR
Wave energy conversion device for desalination, ETC
InactiveUS7023104B2Improve efficiencyEasy to operateWind motor controlGeneral water supply conservationWater qualityEngineering
An impulse-type “wave motor” employs a seabed-mounted or supported structure mounting a wave energy absorbing panel on a hinged lever arm for reciprocation motion to obtain optimal absorption of wave energy from wave motion in the sea. For deepwater wavelengths of L, the panel is optimally positioned in a region within L / 2 depth from the sea surface. The panel motion is coupled by a connecting rod to a fluid pump which generates a high-pressure fluid output that may be used to drive a reverse osmosis desalination unit or to produce other useful work. Seawater or brackish water may be desalinated through reverse osmosis membranes to produce water quality for consumption, agricultural, or other uses. The submerged operating environment of the device in a region of one-half the design wavelength provides the maximum available energy flux and forced oscillations. The pump may be of the positive-displacement piston type, plunger type, or multi-staging driver type, or a variable volume pump.
Owner:KOBASHIKAWA ALVIN +1
Wind turbine device
ActiveUS7132760B2Reduce blade dragConvenient lengthPropellersRotary propellersDevice formOperational capabilities
Owner:BECKER WILLIAM S
Distributed propulsion system and method of control
This invention relates to a method and apparatus for controlling power distribution in an electrical aircraft propulsive system having at least one electrical propulsion unit which includes a plurality of rotatable blades, each blade having an adjustable pitch; a pitch adjusting mechanism for adjusting the pitch of the blades; at least one electrical machine electrically connected to the electrical propulsion unit so as to provide electrical power when in use; and, a control system, the method comprising the steps of: determining the required propulsion; determining whether the propulsive units are delivering the required propulsion; and, adjusting the pitch angle of the blades of at least one propulsive unit so as to increase or decrease the propulsion provided by that propulsive unit.
Owner:ROLLS ROYCE PLC
Method of manufacturing a wind turbine blade, wind turbine blade, front cover and use of a front cover
The invention relates to a method of manufacturing a wind turbine blade, said method comprising the steps of: casting at least two wind turbine shells and preferably one or more load bearing structures, forming a wind turbine blade structure including at least two longitudinal joints by adhering said at least two wind turbine shells and said one or more load bearing structures together, forming one or more front covers to a shape substantially corresponding to said wind turbine blade structure or sections hereof, positioning said one or more front covers in relation to said wind turbine blade structure, and fastening said one or more front covers to said wind turbine blade structure with adhering means. The invention also relates to a wind turbine blade, front cover and the use of a front cover as a unit for supplementary mounting on a wind turbine blade.
Owner:VESTAS WIND SYST AS
Method for improvement of the efficiency of a wind turbine rotor
InactiveUS7059833B2Improvement of wind turbine rotor efficiencyImprove efficiencyPropellersWind motor controlTurbine bladeTrailing edge
A method for the improvement of wind turbine rotor efficiency blades of a wind turbine rotor with serrated trailing edges each having a plurality of span-wise, periodic indentations, in the form of saw teeth having approximately 60 degrees included angles between adjacent vertices. The efficiency of an existing wind turbine rotor is improved by the attachment of an apparatus to at least part of the trailing edge of the wind turbine blades, the apparatus being in the form of a serrated panel that is fixed to the surface of the blade and has the serrations extending into the airflow behind the trailing edge of the existing blade. The efficiency of a new wind turbine blade is improved by manufacturing the blade with serrations of at least part of the trailing edge of the wind turbine blade.
Owner:BONUS ENERGY +1
Wind turbine with pitch control arranged to reduce life shortening loads on components thereof
ActiveUS8096762B2Easy to operateReducing the mean bending momentPropellersPump componentsPull forceGravitational force
Owner:VESTAS WIND SYST AS
Fan assembly
InactiveUS20100226754A1Emission reductionWide operating speed rangePump componentsLighting and heating apparatusEngineeringAirflow
A pedestal for a fan assembly includes a telescopic duct for conveying an air flow to an outlet of the fan assembly. The duct includes an outer tubular member having a first stop member, an inner tubular member located at least partially within and slidable relative to the outer tubular member, the inner tubular member having a second stop member for engaging the first stop member to inhibit withdrawal of the inner tubular member from the outer tubular member, and a mainspring rotatably mounted on the second stop member, the mainspring having a free end retained by the first stop member.
Owner:DYSON TECH LTD
Method for producing titanium alloy turbine blades and titanium alloy turbine blades
InactiveUS6127044ALess abrasionSuperior in water droplet erosion resistancePropellersEngine manufactureLeading edgeTurbine blade
PCT No. PCT / JP95 / 01817 Sec. 371 Date Jun. 2, 1998 Sec. 102(e) Date Jun. 2, 1998 PCT Filed Sep. 13, 1995 PCT Pub. No. WO97 / 10066 PCT Pub. Date Mar. 20, 1997A method for producing titanium alloy turbine blades comprising the steps of (a) forming turbine blades of titanium alloy through hot forging or machining, (b) cooling leading edges on tip portions of the turbine blades including covers thereof formed through hot forging or machining faster than blade main body after final hot forging or solid solution treatment, and (c) heat treating the cooled turbine blades. With this method, it is possible to manufacture titanium turbine blades in an economical fashion and obtain titanium alloy turbine blades superior in reliability by preventing erosion.
Owner:KK TOSHIBA +1
Wind turbine load control method
InactiveUS20070057517A1Sufficient capabilityOperation loadPropellersWind motor controlEngineeringTurbine
A method for limiting loads in a wind turbine by using measured loads or wind speed to increase the minimum pitch angle for extended periods. The minimum pitch angle will be allowed to relax down to the default when load excursions diminish. The method will allow turbines to capture more energy by operating in higher wind speeds and / or utilizing larger rotors without additional loss of fatigue life.
Owner:MCNERNEY GERALD
Modified Savonius rotor
A novel modification of a Savonius rotor used as a wind turbine provides an exhaust channel in each vane. The vane of the modified Savonius rotor is formed into an “S” shape. The air that enters a given end of the vane exits that end through the new exhaust channel into the freestream. A plurality of modified Savonius rotors are stacked one on top of the other for self-starting and greater power output. The outer surfaces of the entire assembly may be coated with photo voltaic cell material for additional energy production. In one embodiment of the invention, a cone shaped solar collector is placed on top of the entire modified Savonius rotor assembly.
Owner:CIRCLE WIND CORP
Fan assembly
InactiveUS20120082561A1Tidy and uniform appearanceQuickly and easily wiped cleanPump componentsLighting and heating apparatusEngineeringSurface shape
A fan assembly for creating an air current includes an air outlet mounted on a stand. The stand includes a base and a body tiltable relative to the base. Each of the base and the body has an outer surface shaped so that adjoining portions of the outer surfaces are substantially flush when the body is in the untilted position.
Owner:DYSON TECH LTD
Turbine nozzle segment band cooling
A gas turbine engine nozzle segment includes at least two circumferentially adjacent vanes joined together along an interface between the vanes. Each of the vanes includes a hollow airfoil disposed between radially inner and outer band panels and a cooling air intake duct leading to a hollow interior of the airfoil for directing cooling air into the hollow interior. The intake duct has a duct wall protruding radially outward from the outer band panel and at least one impingement cooling hole disposed through the intake duct wall and circumferentially and radially inwardly angled. A flange portion extends circumferentially along the outer band panel and an opening in the flange portion is in fluid communication with the intake duct. The hollow airfoil, radially inner and outer band panels, intake duct wall, and flange portion are integrally formed and, preferably, integrally cast such that the vane is a single piece integrally cast vane.
Owner:GENERAL ELECTRIC CO
Method and apparatus for controlling acoustic emissions of a wind turbine
A method and an apparatus for monitoring an acoustic emission of a wind turbine that includes a rotor blade. The apparatus includes at least one sensor operatively coupled to the wind turbine. The sensor is configured to detect an atmospheric condition. A control system is communicatively coupled to the sensor, and configured to control operation of the wind turbine to adjust the acoustic emission of the wind turbine based on the atmospheric condition.
Owner:GENERAL ELECTRIC CO
Direct Drive Wind Turbine
A wind turbine is provided that minimizes the size of the drive train and nacelle while maintaining the power electronics and transformer at the top of the tower. The turbine includes a direct drive generator having an integrated disk brake positioned radially inside the stator while minimizing the potential for contamination. The turbine further includes a means for mounting a transformer below the nacelle within the tower.
Owner:NORTHERN POWER SYSTEMS INC
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