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7618234 |
Hook ring segment for a compressor vane
Embodiments for a compressor stator vane assembly in a gas turbine engine are disclosed. In an embodiment of the present invention a stator vane assembly is provided having a plurality of vanes...
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7618233 |
High efficiency air conditioner condenser fan with performance enhancements
Conical diffusers with or without conical center bodies can improve air moving performance by up to 21% at no increase in power. Embodiments coupled with electronically commutated motors (ECMs)...
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7617823 |
Blower mounting assembly
A gas delivery system comprising an external housing, a flow generator, and a vibration damper body. The flow generator is disposed in the external housing, and has a flow generator housing with a...
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7607287 |
Airfoil acoustic impedance control
A noise control cassette for a gas turbine engine includes a perforated face sheet configured for exposure to an airflow, a non-perforated backing sheet, a core arranged between the face sheet and...
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7597542 |
Methods and apparatus for controlling contact within stator assemblies
A method enables a stator assembly for a turbine engine to be assembled. The method comprises forming a recess within a portion of each base, and coupling the stator vanes within the turbine engine...
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7597535 |
Fan module and its fan casing
A fan module adapted to be assembled onto a system frame includes a body, a fan assembly, and at least two connecting elements. The body has an accommodating space. The fan assembly is disposed in...
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7597534 |
Fan array fan section in air-handling systems
A fan array fan section in air-handling system includes a plurality of fan units arranged in a fan array. Each fan unit is positioned within a fan unit chamber/cell. Each fan unit chamber/cell has...
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7572098 |
Vane ring with a damper
A vane ring damper for a small turbomachine, the vane ring having a plurality of vanes extending between an inner ring and an outer ring and forming a gas flow path, where one of the inner and the...
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7549506 |
Method of suppressing combustion instabilities using a resonator adopting counter-bored holes
A resonator for damping pressure waves or instabilities in a system supported by acoustic energy wherein the resonator adopts the use of counter-bored openings on the downstream side of the...
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7547186 |
Nonlinearly stacked low noise turbofan stator
A nonlinearly stacked low noise turbofan stator vane having a characteristic curve that is characterized by a nonlinear sweep and a nonlinear lean is provided. The stator is in an axial fan or...
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7540722 |
Blower
A blower providing a blower mode and a vacuum mode. A casing provides a motor housing installing a motor and a fan housing installing a centrifugal fan rotationally driven by the motor. A partition...
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7537429 |
Fan fastener for fastening a fan to a heat sink and method of using the same
A fastener, for assembling a fan to a bracket, includes a shaft, and an expanding head extending from an end of the shaft. The shaft has a bulge formed at an opposite end thereof. A handle extends...
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7534090 |
Enhanced bucket vibration system
An enhanced damping system for a turbine bucket. The damping system includes a damper pocket and a damper pin with an offset center of gravity positioned within the damper pocket.
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7533760 |
Noise reduction tubes
The invention uses tubes for the reduction of radiated duct noise. The tubes may be used to attenuate narrow band noise by diverting a portion of the acoustic energy through the tubes back into the...
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7530782 |
Foreign object damage resistant vane assembly
A vane assembly for a gas turbine engine including a shroud with openings defined about a circumference of the shroud and vanes extending radially from the shroud with a vane tip in each opening....
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7517185 |
Air conditioner
In an air conditioner, reverse inhalation is prevented while broad band noise and wind sound are reduced. A projection arranged at the leading end of a stabilizer on the downstream side of an air...
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7516815 |
Arrangement for the generation of sonic fields of a specific modal composition
A device for simulating sound produced by certain equipment, for example a rotor-stator arrangement of a turbomachine, or for generation of opposing sound fields for active sound control, including...
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7500299 |
Method for introducing a deliberate mismatch on a turbomachine bladed wheel and bladed wheel with a deliberate mismatch
A method to introduce a deliberate mismatch into a turbomachine bladed wheel so as to reduce vibration amplitudes of the wheel in forced response. The method includes a step of determining an...
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RE40658 |
Methods and apparatus for cooling gas turbine nozzles
A method for assembling a turbine nozzle for a gas turbine engine facilitates improving cooling efficiency of the turbine nozzle. The method includes providing a hollow doublet including a leading...
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7488152 |
Vibration absorption device for a fan
A vibration absorption for a fan includes a frame, fans, positioning outer jackets, and pins, wherein the positioning outer jacket is inserted into a latching hole of fan, an outer-projected...
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7484930 |
Noise reduction of aircraft flap
A reduction in noise radiating from a side of a deployed aircraft flap is achieved by locating a slot adjacent the side of the flap, and then forcing air out through the slot with a suitable...
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7484925 |
Rotary axial fan assembly
The present invention provides a rotary axial fan and a stator fan for moving air through a heat exchanger for an internal combustion engine cooling system. The fan includes a hub and primary fan...
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7481616 |
Centrifugal fan, cooling mechanism, and apparatus furnished with the cooling mechanism
In a centrifugal fan the diameter of the impeller is rendered less than 20 mm, yet by rotating it under rotational conditions in which the centrifugal force along the impeller periphery is 10,000...
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7481615 |
Fan and shroud assembly
A fan and shroud assembly has a rotatable hub and plural blades extending outward from the hub. A shroud surrounding the fan controls air blast resulting from rotation of the fan. The shroud...
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7476076 |
Centrifugal fan
A centrifugal fan includes a scroll casing having first and second flat base walls, and a circumferential side wall. An air inlet is formed on a center portion of the first base wall and an exhaust...
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7473070 |
Blower and design method of discharge port thereof
A blower comprising: a centrifugal fan; a driving unit for rotating the centrifugal fan; a bracket including a base fixedly-coupled to one side of the driving unit and a protrusion protruded from...
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7470108 |
Axial flow fan
In an axial flow fan, for reducing fluid noise and further reducing the noise by suppressing solid-conveyed noise (structure-borne noise) generated by the vibration of an electric motor or the...
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7465151 |
Shock-absorbent structure of serially-connected fans
The present invention relates to a shock-absorbent structure of serially-connected fans. The serially-connected fans at least include two fan frames. A shock-absorbent element is disposed between...
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7461719 |
Resonator performance by local reduction of component thickness
Aspects of the invention are directed to a system for improving the damping performance of an acoustic resonator. According to aspects of the invention, a resonator, such as a Helmholtz resonator,...
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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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7458769 |
Device for damping vibration of a ring for axially retaining turbomachine fan blades
A device for damping vibration of a retention ring for axially retaining turbomachine fan blades, the blades being designed to be mounted via their roots on a rotary disk having an annular flange...
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7448854 |
Helicopter vibration control system and rotary force generator for canceling vibrations
Helicopter rotating hub mounted vibration control system for a rotary wing hub having periodic vibrations while rotating at an operational rotation frequency. The vibration control system includes...
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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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7431558 |
Air intake
An air intake with at least one inlet port area and one outlet port area, in which there is arranged at least one structure which may be flowed through and around, comprises an opening and modifies...
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7427186 |
Rotary engine with shaft bearing having two stiffnesses, rotary engine shaft and means of connection between a rotary engine shaft and a bearing
A shaft mounted to rotate with respect to another fixed or rotary element of a rotary engine to which the shaft is connected by at least one bearing, it being possible for the engine to operate in...
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7422418 |
Cross flow fan
A cross flow fan of an indoor unit of, for example, an air conditioner includes a pair of disc-shaped end plates and a plurality of fan blades attached to the end plates in a ring-shaped...
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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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7416051 |
Assembly and method for fan noise reduction from turbofan engines using dynamically adaptive Herschel-Quincke tubes
An assembly useful in reducing aircraft engine noise such as turbofan engine noise ( 730 ) comprises: (1) at least one tube “H-Q” having an inlet end ( 738 ), an outlet end ( 740 ) and a...
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7413400 |
Vane assembly with grommet
A vane assembly for a gas turbine engine including a shroud ring with openings and isolating arrangement isolating a vane extremity within each opening, the isolating arrangement cooperating to...
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7399158 |
Blade arrangement
A blade arrangement 31 includes an array of radially extending blades 20 , which may for example comprise a fan of a gas turbine engine for an aircraft. The blades 20 are mounted for rotation...
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7399155 |
Fluid flow guide element and fluid flow apparatus equipped therewith
A fluid flow guide element ( 1 ) constructed, for example, as a diffuser having an inlet opening ( 2 ) and an outlet opening ( 3 ) whose respective cross-sectional areas differ from one another....
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7371042 |
Method and apparatus for balancing gas turbine engines
A method, system, and balanced rotating assembly are provided for field balancing an assembly including a power turbine. The method, system and assembly includes coupling the power turbine to a...
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7367775 |
Apparatus and method for optimizing vibration of a gas turbine
A rotor comprising several blades rotating together with the rotor, particularly running blades, and the blades forming at least one blade ring, is disclosed. The blades within the, or each, blade...
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7357619 |
Cross over flow diverter for noise reduction
A cris-cross pattern of flow channels serves to divide the flow of fluid and then cross the flow to cause an impact between the flow in each channel to impact against each other to reduce the...
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7356999 |
System and method for stability control in a centrifugal compressor
A stability control algorithm is provided for a centrifugal compressor. The stability control algorithm is used to control a variable geometry diffuser and a hot gas bypass valve (when provided) in...
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7351041 |
Fan with reduced noise generation
Axial flow fan propellers are provided with a roughened portion along the trailing edge of the fan blades on the pressure side of the blade to minimize tonal acoustic emissions generated by laminar...
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7338250 |
Gas turbine engine blade containment assembly
A gas turbine engine rotor blade containment assembly ( 38 ) comprises a containment casing ( 40 ) and the containment casing ( 40 ) has a plurality of axially spaced ribs ( 66 ). The ribs ( 66 )...
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7322195 |
Acoustic dampers
An acoustic resonator for use in an engine is provided. The acoustic resonator includes a cavity having a volume, an aperture, and a passage connecting the aperture and the cavity. The aperture has...
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7311490 |
Rotor blade with an electrical field
The invention concerns a rotor blade, in particular a rotor blade of a wind power installation. The object of the present invention is to provide measures for still further improving the CR-value...
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7309207 |
Fan shroud structure reinforcement to reduce or eliminate warping and distortion
A fan shroud structure ( 10 ) is constructed and arranged to carry a fan and motor. The fan shroud structure includes a base ( 12 ) and an annular rim ( 24 ) extending from the base. The rim...
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