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7607893 |
Counter tip baffle airfoil
A turbine blade includes an airfoil having first and second tip ribs extending along the opposite pressure and suction sides thereof. The tip ribs are spaced apart between the leading and trailing...
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7600974 |
Radial blade wheel
The present invention relates to a radial blade wheel ( 1 ) with blades ( 3 ), a first wall ( 2 ) connected with the blades and having an opening ( 4 ) for enabling a flow through the wall ( 2 ) to...
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7600975 |
Turbine and rotor therefor
A rotor that consists of a central hub or shaft and a plurality of boot shaped integral blade/vane units that combine a pronounced elongated vane tip extending substantially toward the incoming...
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7575411 |
Engine intake air compressor having multiple inlets and method
A compressor assembly ( 404 ) includes a compressor housing ( 412 ) having a main inlet bore ( 424 ) and a secondary inlet passage ( 422 ) that has an increasing flow cross-sectional area. The...
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7556477 |
Bi-layer tip cap
A tip cap for use in a turbine bucket. The tip cap may include a shield of an oxidant resistant material and a cap positioned within the shield of a high strength material.
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7549837 |
Impeller for centrifugal pump
A centrifugal pump includes a rotatable shaft; and at lest one impeller attached to the rotatable shaft, wherein the at least one impeller includes a top plate, and a bottom plate, and a plurality...
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7547193 |
Rotor blade assembly with high pitching moment airfoil section for a rotary wing aircraft
A main rotor blade assembly with a high negative pitching moment airfoil section having a pitching moment coefficient beyond (more negative than) −0.035 at Mach Numbers below 0.80 and a blade...
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7540716 |
Rotor blade for a wind power plant
The present invention concerns a rotor blade for a wind power plant having an aerodynamic profile comprising a rotor blade leading edge and a rotor blade trailing edge. The invention also concerns...
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7513746 |
Windmill blade shaping and mounting to enhance performance
A method of mounting windmill blades their enhance performance is disclosed. The blades have a transverse cross-sectional shape having a predominately flat chord section and are mounted such that...
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7513750 |
Rotor blade tip planform
A main rotor blade incorporating a rotor blade tip region having a tip chord and a tip taper such that the ratio of the main rotor blade chord to the tip chord is approximately 0.30. The tip taper...
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7484937 |
Compressor blade with reduced aerodynamic blade excitation
The compressor blades of an aircraft engine are, in at least one natural-vibration critical area, designed such that at the blade leading edge ( 6 ), the leading edge shock wave ( 14 ) attaches to...
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7476081 |
Centrifugal compressing apparatus
In a centrifugal compressing apparatus, a height of a blade of an impeller is made to decrease gradually from a front edge thereof to a rear edge thereof, and a rate of change of the height of the...
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7458777 |
Wind turbine rotor assembly and blade having acoustic flap
A wind turbine includes a rotor assembly having at least one blade with a blade body defining a leading edge and a trailing edge and adapted for movement in response to a wind flow over the body to...
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7438522 |
Fan
A fan has an air conveying conduit ( 16 ) and a fan wheel ( 22 ) arranged therein, which wheel is rotatable about a central axis ( 25 ) and is formed with a central hub ( 20; 120 ) having an outer...
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7435048 |
Drain pump, and air conditioner provided therewith
A drain pump is provided that reduces the operating noise when the head is low. The drain pump has a pump casing, and an impeller. The pump casing has a drain inlet for sucking in drain water at a...
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7425113 |
Pressure and current reducing impeller
A secondary air system providing a regeneration air pump wherein the vanes of the impeller are tapered from a point along the length of the vane to the root of the vane inside the air pump. The...
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7416386 |
Heat dissipation apparatus
A heat dissipation apparatus. A fan frame includes an air inlet, an air outlet, a passage, and a curved expansion portion. The air inlet is opposite the air outlet. The passage is between the air...
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7413408 |
Vibration-reducing and noise-reducing spoiler for helicopter rotors, aircraft wings, propellers, and turbine blades
A spoiler attached to helicopter main rotor blades, tail rotor blades, propellers, aircraft wings, and machined into turbine blades, that reduces vibration and silences their operation. Also, when...
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7393182 |
Composite tip shroud ring
A gas turbine engine includes a tip shroud ring rotatably supported on a last stage blade assembly in a turbine. The tip shroud ring is formed entirely of a fiber reinforced ceramic matrix...
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7381027 |
Fan motor
A fan motor having a small thickness and its impeller's blades formed to have a longer length in the diametrical direction than a width in the axial direction. Since the blade of the fan motor has...
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7377751 |
Cooling fan and shroud with modified profiles
A cooling system includes a cooling fan with an outlet and an inlet and a shroud surrounding at least a portion of the cooling fan. The cooling fan includes a plurality of fan blades, and each fan...
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7374403 |
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...
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7360995 |
Vertical axis windmill
A vertical axis windmill in which a support frame is provided as a wind power dam to form a plurality of shaft-installation sections, and in which a plurality of vertically long blades each of...
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7351039 |
Compressor rotor blade
A compressor rotor blade ( 1 ) includes a rotor blade ( 2 ), a platform ( 3 ) that adjoins the rotor blade ( 2 ) and blade footing ( 4 ) that adjoins the platform ( 3 ). The rotor blade ( 4 ) is...
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7331765 |
Two-sweep rotary wing blade with limited taper ratio
A rotary wing blade of limited taper ratio, comprising in succession along a reference radius: an inner zone; a forward-swept zone; and a back-swept zone. In addition, the beginning of the...
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7316502 |
Mixing blade, blending apparatus, and method of mixing
A blade for mixing a material includes a disk comprising a plastic or composite material. The disk may have one or more circumferentially-spaced openings extending through the disk from a...
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7290986 |
Turbine airfoil with curved squealer tip
An airfoil for a gas turbine engine includes a root, a tip, a leading edge, a trailing edge, and opposed pressure and suction sidewalls extending generally along a radial axis. The airfoil includes...
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7281894 |
Turbine airfoil curved squealer tip with tip shelf
An airfoil for a gas turbine engine includes a root, a tip, a leading edge, a trailing edge, and opposed pressure and suction sidewalls extending generally along a radial axis. The airfoil includes...
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7278824 |
Pump for molten materials with suspended solids
A molten material pump includes an impeller housed within a base member of the pump. A plurality of grooves are defined in a peripheral sidewall of the impeller for either drawing a molten material...
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7247001 |
Impeller
An impeller ( 1 ) according to the present invention has a disk-like main plate ( 10 ), a blade ( 20 ) joined to the main plate, and a side plate ( 30 ) having a suction port. A boss hole ( 12 ) is...
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7214033 |
Blower fan
A blower fan includes a shroud, a hub for guiding airflow being discharged, and a plurality of blades disposed between the shroud and the hub. A first outer diameter of a first portion, which is...
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7179050 |
Radial fan
The invention relates to a radial fan with a casing and in it an axially placed wheel, wherein the casing has an axially placed air inlet, an exhaust ( 5 ), a bottom section ( 6 ) with a bottom...
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7179053 |
Air-blowing apparatus of cleaner
Disclosed herein is an air-blowing apparatus of a cleaner. The air-blowing apparatus comprises a fan having a plurality of blades spaced apart from each other in the circumferential direction of...
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7179057 |
Velocity profile impeller vane
In accordance with the present invention, an impeller for use in a centrifugal pump has at least one vane the radially outer terminal end of which is configured to produce a flow velocity profile...
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7165945 |
Braided spar for a rotor blade and method of manufacture thereof
A braided rotor blade spar includes a tri-axle braid in which braided bias angled fibers are located non-parallel to a longitudinal axis of the spar. Zero degree fibers are located parallel to the...
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7163374 |
Blower fan structure
Provided is an improved blower fan structure in which length of blades is increased and inlet and outlet angles of the blades are optimized for highly increasing an efficiency of the blower fan....
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7147433 |
Profiled blades for turbocharger turbines, compressors, and the like
A rotor and an apparatus including a rotor are provided. For example, the apparatus can be a turbine or compressor having a housing in which the rotor rotates while gas is circulated therethrough....
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7146971 |
Impeller and a supercharger for an internal combustion engine
An impeller for a supercharger for an internal combustion engine and a supercharger incorporating such an impeller is disclosed. The impeller includes a molded upper part having a top wall defining...
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7125220 |
Axial-flow type fan having an air outlet blade structure
An axial-flow type fan includes a fan housing consisting of an air inlet, an air outlet and an air channel, and a fan wheel consisting of a hub and fan blades. The air channel of the fan housing...
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7125226 |
Impeller for radial-flow heat dissipating fan
An impeller for a radial-flow heat dissipating fan includes a hub and a plurality of blades surrounding the hub. The blades are connected to a circumference of the hub to allow joint rotation of...
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7114925 |
Impeller vane configuration for a centrifugal pump
A pump impeller for use in industrial pumps of the centrifugal type is disclosed in which the vanes of the pump impeller are particularly configured to maintain pumping efficiency as the vane wears...
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7083382 |
Vertical axis wind turbine
The present invention provides a prime mover ( 2 ) for harnessing energy from a flow of fluid, the prime mover ( 2 ) comprising a shaft ( 4 ) having a rotational axis, arranged to be rotatably...
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7070388 |
Inducer with shrouded rotor for high speed applications
An inducer rotor rotatably mountable in an inducer for pressurizing fluid traveling through the inducer. The inducer rotor includes a hub. The hub has a central axis and a plurality of blades...
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7059833 |
Method for improvement of the efficiency of a wind turbine rotor
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...
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7048494 |
Turbine fuel pump
A turbine fuel pump including a cylindrical casing, an electric motor accommodated in the casing, a pump housing mounted into the casing, and an impeller disposed within the pump housing and driven...
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6994523 |
Air blower apparatus having blades with outer peripheral bends
An air blower apparatus is provided including a hub which is a center of rotation, and a plurality of blades disposed along an outer peripheral surface of the hub and having leading and trailing...
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6991430 |
Turbine blade with recessed squealer tip and shelf
A turbine blade squealer tip has a continuous squealer tip wall extending radially outwardly from and continuously around a tip cap. A recessed tip wall portion of the tip wall is recessed inboard...
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6986643 |
Blower and the blade structure thereof
The present invention provides a blade structure used in a blower to not only increase the wind pressure and gas quantity but also reduce the noise. The blade structure includes a vane group...
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6986642 |
Extreme mu rotor
A rotor for a rotary wing aircraft includes a blade having a leading edge, and a trailing edge. The rotor has a leading edge tip extension at a tip of the blade and a weight within the leading edge...
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6981843 |
Axial-flow fan structure
An improved axial-flow fan structure is disclosed and claimed, which includes a hub and a plurality of blades. The hub has a top surface and a side surface around which the plurality of blades is...
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