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| Number | Title | Issue Date |
| 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 arrangement. Each of the fan blades has a cross sectional area ratio of Sa/Sb i... | 09/09/2008 |
| 7399161 | Centrifugal fan A centrifugal fan includes a hub and an impeller. The impeller is composed of a plurality of blades mounted around an outer circumference of the hub. The paraxial side of the blade forms a backward leaning structure, while the non-paraxial side thereof forms a forwa... | 07/15/2008 |
| 7364411 | Fan impeller and fan motor Small, high-performance centrifugal fan for cooling portable electronic devices. The centrifugal fan motor employs a cantilever-type impeller constituted by an impeller blade unit that includes a lower endwall portion at axial one end, having a wall surface for brea... | 04/29/2008 |
| 7358630 | Ventilating device for rotary electrical machine The ventilating device fixed on a rotor of a rotary electrical machine, comprises a first fan (62a) having a radial plate portion (64a), at least one second fan (62b) having a radial plate portion (64b), and me... | 04/15/2008 |
| 7351031 | Centrifugal blower A centrifugal blower includes a housing, an impeller, and a guiding cover. The housing includes a compartment delimited by an annular wall. A radial air inlet is defined in the annular wall and communicated with the compartment. The compartment includes an axial ope... | 04/01/2008 |
| 7334936 | Mixing device and method of mixing The present invention is a mixing device and a method of mixing viscous fluids with a mixing device. The mixing device includes a shaft and a support mounted for rotation with the shaft. A plurality of vanes extend from the support and are mounted for rotation with ... | 02/26/2008 |
| 7329100 | Centrifugal fan impeller An impeller of a centrifugal fan, the impeller used in the centrifugal fan having a casing and the impeller rotatably mounted in the casing. The impeller includes a hub connecting a number of blades equiangularly disposed in a circumferential direction. The hub incl... | 02/12/2008 |
| 7311494 | Fan and scroll design for high efficiency and low noise A centrifugal fan assembly including a housing having a lower surface and a parallel inlet wall that defines an inlet opening. A shaft is supported by the housing for rotating about an axis. A plurality of fan blades are disposed about the shaft and extend radially ... | 12/25/2007 |
| 7281898 | Blowing apparatus for refrigerators Disclosed herein is a blowing apparatus for refrigerators. The blowing apparatus includes a centrifugal fan. The centrifugal fan comprises a hub plate connected to a shaft of the motor, a plurality of blades attached to the hub plate in the radial direction of the h... | 10/16/2007 |
| 7281897 | Multi-blade centrifugal blower Each of blades of a multi-blade centrifugal blower is provided with a taper portion, which is arranged at an inside periphery at least at the side of one rotation-shaft-direction end of the blade and tapers from the side of other rotation-shaft-direction end of the ... | 10/16/2007 |
| 7264446 | Centrifugal-fan impeller, and method of its manufacture A tiny-diameter, lengthwise extensive impeller utilized in an ultra-small centrifugal fan is molded by an injection molding operation. In order to avert difficulties attendant on injection-molding ultra-miniature parts, the thickness and length of a reinforcing ring... | 09/04/2007 |
| 7244099 | Multi-vane centrifugal fan A multi-vane centrifugal fan has a fan housing and an impeller. The impeller includes a plurality of vanes arranged with a prescribed spacing in the circumferential direction and fixed to a hub rotatably driven around a shaft core. The impeller further includes an a... | 07/17/2007 |
| 7210907 | Centrifugal fan impeller with blades inclined relative to the axis of rotation The invention relates to a centrifugal fan impeller (1) having an axis of rotation (6) and comprising one or more modules (2). Each module (2) comprises a mounting disc (4), at least one connecting ring (5) and a plurality o... | 05/01/2007 |
| 7195457 | Motor-operated fan for air cushion table A motor-operated fan includes a housing, a motor secured in the housing, and an impeller rotatably mounted on the housing and rotated by the motor. Thus, the impeller has a plurality of blades and a plurality of auxiliary blades to produce a larger air flow when the... | 03/27/2007 |
| 7165942 | Fan impeller with integrated grease separation, especially for cooking appliance The disclosure relates to a fan impeller including a base plate and a plurality of fan impeller blades fixed to the plate. The fan impeller blades are positioned in an essentially vertical manner on the base plate and have a substantially radial arrangement, each fa... | 01/23/2007 |
| 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. Particularly, an outer diameter of the blades is more than or equal to ... | 01/16/2007 |
| 7070317 | Method of mixing using vaned mixing device The present invention is a mixing device and a method of mixing viscous fluids with a mixing device. The mixing device includes a shaft and a support mounted for rotation with the shaft. A plurality of vanes extend from the support and are mounted for rotation with ... | 07/04/2006 |
| 7063515 | Radial fan An air compressor includes a valve plate with cooling fins and a piston also having cooling fins. The valve plate includes an integral and angled valve plate outlet. The angling of the valve plate outlet reduces turbulence and improves compressed air flow. The pump ... | 06/20/2006 |
| 6971788 | Fluid mixing device A mixing device includes vanes arranged so that the outer edges of the vanes define a frusto-conical surface in order to facilitate improved circulation of the liquid being mixed. Each vane is preferably curved, either lengthwise, widthwise, or both. In one embodime... | 12/06/2005 |
| 6945753 | Smoke exhauster having improved fan device A smoke exhauster includes a motor attached to a housing, and a fan device attached to the motor and to be driven by the motor. The fan device including an upper plate, a lower plate having a bore, and a number of fan blades secured between the upper and the lower p... | 09/20/2005 |
| 6942459 | Modified centrifugal fan wheel The modified centrifugal fan wheel comprises a hollow hub and a set of blade. A hollow hub axis is disposed at the center of a hollow portion of the hollow hub. Along a top side surface of the hollow hub is a curved guiding inlet part and along a bottom side surface... | 09/13/2005 |
| 6921330 | Front chaffer and cleaning fan A cleaning shoe of an agricultural combine is provided with a front chaffer located upstream from the main chaffer. The front chaffer has a closed upstream portion and an open downstream portion. The closed upstream portion is upwardly inclined and the open downstre... | 07/26/2005 |
| 6893220 | Centrifugal fan A centrifugal blower impeller includes a central hub and a plurality of impeller blades. The central hub includes a conical section and an outer edge. The conical section is centered with respect to a center axis and extends from the center axis towards the outer ed... | 05/17/2005 |
| 6883411 | Impeller for rotary slicing machine An improved impeller for use in a rotary food slicing machine comprising a rear base plate and at least one forward ring secured in axial spaced parallel relation relative to the rear base plate and a plurality of circumferentially spaced planar paddles spanning the... | 04/26/2005 |
| 6769876 | Centrifugal ventilator fan A centrifugal ventilator fan, which has improved fan performance and lower noise. A first outlet angle, on an upstream end of the fan, is less than a second outlet angle. Additionally, the first outlet angle is equal to zero degrees or greater and five degrees or le... | 08/03/2004 |
| 6755617 | Method for the early detection of aerodynamic instabilities in a turbomachine compressor A method for the early detection of aerodynamic instability in a turbomachine compressor is described which involves collecting and normalizing signals from sensors distributed uniformly around the circumference of the compressor and detecting events for which the n... | 06/29/2004 |
| 6648936 | Oil mist eliminator An oil mist eliminator includes an impeller rotating about its axis in one direction within a casing having an inlet and an outlet. The impeller includes a plurality of circumferentially spaced blades held between front and rear discs. The front disc has ... | 11/18/2003 |
| 6634855 | Impeller and fan incorporating same An impeller having an axis about which the impeller is rotatable in a working direction of rotation A, with a plurality of aerofoil blades spaced from and arranged about the axis; the inwardly axis-facing surface of each blade defines a longer fluid flow ... | 10/21/2003 |
| 6609893 | Impeller wheel with an improved connection between the center plate and the fan blades An impeller wheel includes a hub, a center plate affixed to and extending radially outwardly from the hub, and a plurality of fan blades connected to the center plate. The connection between the center plate and each fan blade includes two laterally space... | 08/26/2003 |
| 6468038 | Fan, method for producing the fan by molding molten metal, and device for producing the fan by molding molten metal A fan according to the present invention can be monolithically molded out of a metal with a low energy in combination with a structure of a metal mold, in which gate arrangement and/or distribution of dimensions of vanes is devised in injecting a low melt... | 10/22/2002 |
| 6416285 | Process for manufacturing an impeller A method for producing a rotor of a fan, which has support disks and lamellae which each have a curved cross-sectional profile, is proposed. The method is distinguished by the fact that firstly the lamellae are pushed axially into receiving openings in th... | 07/09/2002 |
| 6368062 | Turbo fan for range hood and range hood storing turbo fan The spring-back state of the blade press formed from the metallic thin plate is restricted to form the blade of wing sectional shape strictly in accordance with the design. The blade is formed into the wing sectional shape having a hollow inner part with ... | 04/09/2002 |
| 6345956 | Impeller of a blower having air-guiding ribs with geometrical configurations An air-guiding impeller for a blower. The impeller includes a rotary shaft adaptable for a motor, an annular frame, blades formed on the annular frame, and air-guiding ribs interconnected between the annular frame and the rotary shaft and inclined with re... | 02/12/2002 |
| 6318964 | Complex cooling fan with increased cooling capacity A complex cooling fan includes an upper fan including an upper fan and a lower fan, the upper fan including a first cylindrical body, a plurality of first blades extending outwardly from the cylindrical shell body, and a cylindrical collar extending downw... | 11/20/2001 |
| 6220818 | Blower wheel assembly with steel hub, and method of making same The invention includes a blower wheel assembly and method characterized by a hub formed with a piece of annealed carbon steel tubing cut to an appropriate length. The tubing is formed into the hub by a tube end forming machine. The hub includes a first tu... | 04/24/2001 |
| 6158954 | Cross-flow fan and an air-conditioner using it A number of vanes 12 are disposed in a peripheral direction of a plurality of supporting disks disposed along a rotary shaft 14 at given intervals. Each vane 12 is disposed at an angular interval as determined by a logistic representation. Thereby the int... | 12/12/2000 |
| 6156090 | Air cleaner having vanes with a winglike cross-section between a shroud and baseplate for rotation within a housing An air cleaner includes a housing having an upper wall and side walls, an air filter mounted with respect to the housing, a fan including a vane-wheel having a plurality of vanes, a supporting plate extending substantially between at least two side walls ... | 12/05/2000 |
| 6149381 | Cross flow fan for air conditioner A cross flow fan of an air conditioner adapted to attenuate or offset high sound and low sound which are generated during operation of the cross flow fan to thereby minimize noise and to prevent restriction of revolution thereof, the cross flow fan mounte... | 11/21/2000 |
| 6135716 | Runner for Francis-type hydraulic turbine Disclosed is a runner for a Francis-type hydraulic turbine, comprising a ring, a hub, and a number of blades all having a curved shape and being attached to the ring and hub. Each blade has an inlet edge and an outlet edge. The blades are characterized in... | 10/24/2000 |
| 6095752 | Centrifugal blower impeller, especially for a heating and ventilating, and/or air conditioning, system for a motor vehicle A centrifugal blower impeller for a vehicle heating and ventilation system has a central hub, a peripheral crown having a set of vanes for drawing the air axially through the crown, to deliver the air radially towards the outside, and a set of arms, space... | 08/01/2000 |
