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| Number | Title | Issue Date |
| 8038392 | Axial diffuser for a centrifugal compressor The effective efficiency of a centrifugal compressor can be improved by achieving a uniform distribution of fluid velocity across the outlet end of a fluid passage of an axial diffuser for the centrifugal compressor and a high static pressure recovery ratio Cp in th... | 10/18/2011 |
| 8016557 | Airfoil diffuser for a centrifugal compressor An airfoil diffuser for a centrifugal compressor formed by a diffuser passage area and a plurality of diffuser blades located within the diffuser passage area. The diffuser passage area is defined between a hub plate and a shroud of the centrifugal compressor. Each ... | 09/13/2011 |
| 7955051 | Diffuser/guide vane assembly for a turbomachine A diffuser/guide vane assembly for an aircraft turbojet or turboprop engine is disclosed. The diffuser includes annular flanges joined by blades and the guide vane assembly includes cylindrical shelves joined by vanes. The annular flanges and the cylindrical shelves... | 06/07/2011 |
| 7628583 | Discrete passage diffuser A centrifugal compressor includes an impeller and a diffuser, the diffuser having a plurality of descrete D-shaped passages intersecting each other. ... | 12/08/2009 |
| 7448852 | Leaned centrifugal compressor airfoil diffuser A low solidity vaned airfoil diffuser for a centrifugal compressor wherein each blade has a lean angle greater than zero and wherein the hub stagger angle may be the same as or may be different from the shroud stagger angle for each blade. ... | 11/11/2008 |
| 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 inlet and the air outlet, guiding airflow from the air inlet to the ai... | 08/26/2008 |
| 7365446 | Wind power plant having power module mounted on tower foundation and method for use in constructing same The invention relates to a method for constructing a wind energy plant and to a wind energy plant as such. An aim of one aspect of the invention is to provide a method for constructing wind energy plants at lower expenses and more rapidly. According to one aspect, a... | 04/29/2008 |
| 7334987 | Fan assembly for vacuum cleaner A fan assembly for a vacuum cleaner, comprising a motor, an impeller rotatably coupled to the motor, and having a plurality of impeller wings, and a diffuser having a plurality of diffuser wings arranged along an outer circumference of the impeller. The plurality of... | 02/26/2008 |
| 7329099 | Wind turbine and energy distribution system A new design of vertical axis wind turbine is disclosed based on a dome structure using dome struts as blades that work in concert to produce rotational motion. The stability and low cost of the new design allows the turbine to function in low wind speed regimes as ... | 02/12/2008 |
| 7326037 | Centrifugal pumps having non-axisymmetric flow passage contours, and methods of making and using same Centrifugal pumps and methods of making and using them are disclosed. One inventive pump includes a plurality of flow passages, at least one pump component having one or more non-axisymmetric flow passage contours defined at least in part by non-equal blade or vane ... | 02/05/2008 |
| 7326027 | Devices and methods of operation thereof for providing stable flow for centrifugal compressors Centrifugal compressor flow stabilizing devices and methods of operation thereof are disclosed that act upon the flow field discharging from the impeller of a centrifugal compressor and modify the flow field ahead of the diffuser vanes such that flow conditions cont... | 02/05/2008 |
| 7319279 | Wind-driven electrical power generating apparatus A power generating apparatus comprises an electrical power generating device, a vane-carrying structure and a mounting flange. The electrical power generating device includes a body and a power input shaft extending from within the body. The body is generally cylind... | 01/15/2008 |
| 7237599 | Cooler with blower comprising heat-exchanging elements A cooler for electronic components comprises a heatsink, a blower, and an electric drive with a rotor and a stator. The heatsink comprises heat-exchanging means, inflow and outflow openings, and a base providing thermal contact with said electronic components and sa... | 07/03/2007 |
| 7235893 | Reduced friction wind turbine apparatus and method The present invention is a wind power apparatus for driving an electric generator. The wind power apparatus comprises a frame, a vertical axle mounted on the frame and a buoyant hull. The buoyant hull is rotational disposed on the axle. The buoyant hull has a curvil... | 06/26/2007 |
| 7223070 | Blower motor A blower motor for a vacuum cleaner or the like has an impeller/rotor assembly which is dynamically balanced. Air guide vanes are disposed between the diffuser plate and fan cover and surround the impeller periphery. A fan cover 13 accommodates the impeller | 05/29/2007 |
| 7220106 | Francis wheel and hydraulic machine comprising one such wheel A Francis runner that includes a crown, a band and blades which extend between the crown and the band. An angle (β24) between a linear speed (U, D224) of one of the blades and a median of the blade at the trailing edge, has a value between 20 ... | 05/22/2007 |
| 7210904 | Runner blade for low specific speed Francis turbine A runner for use as retrofit in existing Francis turbine water path includes a set of nine profiles covering crown (hub) to skirt (band) area is to produce power efficently at deteriorated head condition of site. Each of the nine profiles is made of two curves, name... | 05/01/2007 |
| 7191519 | Method for the manufacture of a vaned diffuser An improved method for manufacturing a vaned diffuser (101) of a turbocharger, preferably from aluminum or an aluminum alloy, where the vaned diffuser possesses at least one axis (115) suitable for separating the vaned diffuser from its rigid mold by t... | 03/20/2007 |
| 7189052 | Centrifugal compressor having rotatable compressor case insert A centrifugal compressor is disclosed as including a case, a compressor chamber, and an impeller in the compressor chamber for compressing fluid from an inlet opening and forcing compressed fluid through an outlet opening. Moreover, the compressor includes an insert... | 03/13/2007 |
| 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 the fan for generating a blowing force in the centrifugal direction the... | 02/20/2007 |
| 7156618 | Low cost diffuser assembly for gas turbine engine A gas turbine diffuser assembly and a method for assembling same, includes providing a loose fit between the diffuser body and the diffuser pipes. Damper members provide a snug attachment. ... | 01/02/2007 |
| 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. The rotor has a plurality of radially extending blades, and each blad... | 12/12/2006 |
| 7128061 | Supercharger A centrifugal supercharger is provided. One embodiment of the supercharger comprises a two-piece housing wherein a parting area is substantially aligned with a rotational axis of a drive- or impeller shaft. Another embodiment comprises a sleeve, or intermediate memb... | 10/31/2006 |
| 7101151 | Diffuser for centrifugal compressor A diffuser (30) for a centrifugal compressor (60) having a flow slot (34) formed between the leading edge portion (36) of a diffuser vane (32) and an adjoining diffuser wall (70) for the passage of working fluid (67) ... | 09/05/2006 |
| 7097411 | Turbomachine compressor scroll with load-carrying inlet vanes A compressor scroll housing for use in conjunction with turbo-machinery, particularly applicable in aircraft. The scroll housing can include a plurality of scroll vanes arrayed around the scroll housing. Scroll vanes, integrally formed with the scroll housing, carry... | 08/29/2006 |
| 7025566 | Hybrid vane island diffuser A gas turbine engine diffuser comprises a bowl-shaped diffuser casing and a cover nested into the bowl-shaped diffuser casing and cooperating therewith in defining a diffuser passage having a channeled entry portion in fluid flow communication with a vaned exit port... | 04/11/2006 |
| 7021891 | Micro-impeller miniature centrifugal compressor A back-to-back double-flow bi-directional thrust-balanced micro-impeller for use in optimized compression cycles of small volumetric flow rates is provided. The back-to-back micro-impeller is a component of a compressor capable of generating a pressure head suitable... | 04/04/2006 |
| 7007475 | Conical helical of spiral combustor scroll device in gas turbine engine A conical helical design for a turbine combustor scroll utilizes as much cavity of the combustor housing as possible by adding an axial shift and an irregular cross sectional shape in the scroll without adversely effecting aerodynamic performance. The axial shift re... | 03/07/2006 |
| 7001143 | Cambered vane for use in turbochargers Improved cambered vanes comprise an inner airfoil surface oriented adjacent a turbine wheel, and an outer airfoil surface oriented opposite the inner airfoil surface. The inner and outer airfoil surfaces define a vane airfoil thickness. A cambered vane leading edge ... | 02/21/2006 |
| 6964555 | Centrifugal blower In a centrifugal blower, a centrifugal fan is housed in a scroll casing and driven by a motor. The scroll casing includes a suction scroll wall and a motor scroll wall. The scroll casing forms a scroll air passage between a first protruding portion of the suction sc... | 11/15/2005 |
| 6948320 | Expansion turbine stage An expansion turbine stage for compressed gases has a housing and a turbine rotor. The housing has flow guide channels for feeding the compressed gas to the turbine rotor. The turbine rotor, which is over-mounted and has centripetal flow through it, is followed by a... | 09/27/2005 |
| 6935838 | High pressure multi-stage centrifugal blower A high pressure centrifugal blower having vertically split casing and aluminum or steel impellers mounted on a common shaft housed within the casing, and at least two oil-enclosing bearing housings to rotatably support the rotors, where an integral gearbox is formed... | 08/30/2005 |
| 6935839 | Variable flow water pump A variable-capacity water pump includes a housing having an impeller mounted on a rotatable shaft. The impeller includes a plurality of vanes pivotally coupled between upper and lower shroud and operatively coupled to a pitch plate. As the pump speed increases in re... | 08/30/2005 |
| 6932565 | Turbine A turbine comprises a turbine wheel having radial blades and supported in a housing for rotation about an axis. An annular inlet passageway extends radially inwards towards the turbine wheel, the inlet passageway being defined between first and second facing annular... | 08/23/2005 |
| 6877955 | Mixed flow turbine and mixed flow turbine rotor blade A mixed flow turbine includes a hub attached to a rotation axis and a plurality of rotor blades. Each of the plurality of rotor blades is attached to the hub in a radial direction, and the hub is rotated based on fluid supplied to a rotation region of the plurality ... | 04/12/2005 |
| 6695579 | Diffuser having a variable blade height A diffuser for converting high velocity fluid into high pressure fluid. The diffuser includes a pair of spaced opposing walls between which extend a plurality of blades. Each of the blades has a pressure side and a suction side, wherein the pressure side ... | 02/24/2004 |
| 6695580 | Motor/fan assembly having a radial diffuser bypass A bypass motor assembly includes a motor having a rotatable shaft, a working air fan secured to the rotatable shaft and a shroud having an intake eyelet and at least one exhaust apertures. The assembly includes an end bracket having a shaft hole through w... | 02/24/2004 |
| 6669436 | Gas compression apparatus and method with noise attenuation A gas compression apparatus and method according to which an impeller rotates to flow fluid through a casing, and a plurality of vanes are mounted on a plate in the casing. A series of cells are formed in the plate to form an array of acoustic resonators ... | 12/30/2003 |
| 6651431 | Boosted internal combustion engines and air compressors used therein An inlet air compressor for an internal combustion engine is provided which has one inlet and a plurality of outlets. Within the compressor are disposed a plurality of diffusers coupled to the plurality of outlets. The flow is divided among the plurality ... | 11/25/2003 |
| 6641364 | Apparatus for minimizing noise in a fan unit The present invention is a system of symmetric guides (25A, 25B) and baffles (26, 28) for directing and diffusing the external air drawn from a fan blower (12) before distributing the flow evenly to the outlet of a fan filter unit (32). This arrangement n... | 11/04/2003 |
