Angularly Spaced, Axially Elongated Blades (i.e., Squirrel Cage Type) Patents (Class 416/187)
  • Patent number: 10718353
    Abstract: A gear unit having a shaft, in particular an input shaft, a fan impeller being connected to the shaft in a torsionally fixed manner, a fan hood being connected to the gear unit housing, which at least partially encloses the fan impeller, a separation plate for separating the pressure chamber of the fan from the suction chamber of the fan being connected to the fan hood, where the separation plate has an air intake opening for the fan impeller and is situated on the side of the fan impeller facing axially away from the gear unit, the fan impeller has an upper and a lower cover disk, which are axially set apart from each other, and fan blades are disposed between the cover disks, so that channels are formed, the radial clearance of the air intake opening being disposed within, especially centrally within, the radial clearance region covered by the upper cover disk, and the air intake opening is disposed axially within, especially centrally within, the axial region covered by the upper cover disk.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: July 21, 2020
    Assignee: SEW-EURODRIVE GMBH & CO.KG
    Inventors: Konstantin Völker, Peter Barton, Stefan Dietrich, Anette Bunka
  • Patent number: 10662968
    Abstract: A method of manufacturing a centrifugal fan is provided that includes cutting a metal sheet to form a positive pressure surface forming member and a negative pressure surface forming member, respectively, forming a positive pressure surface and a negative pressure surface; pressing the positive pressure surface forming member and the negative pressure surface forming member to form a first curved surface forming the positive pressure surface and a second curved surface forming the negative pressure surface; trimming the positive pressure surface forming member provided with the fast curved surface and the negative pressure surface forming member provided with the second curved surface to form a shroud bonding surface and a main plate bonding surface; bending the shroud bonding surface and the main plate bonding surface; bonding the positive pressure surface forming member and the negative pressure surface forming member to each other; and bonding the shroud bonding surface and a shroud to each other and bondi
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: May 26, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Sang Yuk Son, Kyung Jung Lee
  • Patent number: 10605258
    Abstract: A forward curved blade impeller for an industrial fan assembly includes an impeller hub assembly, an impeller baseplate mounted on the impeller hub assembly and having an annular shape, a first impeller ring having an annular shape, and an impeller blade deck having a plurality of first impeller blades extending between, circumferentially spaced about and secured to the impeller baseplate and the first impeller ring. A plurality of reinforcement bars extend between, are circumferentially spaced about and are secured to the impeller baseplate and the first impeller ring. Additional impeller blade decks and impeller rings may be stacked above the first impeller blade deck and first impeller ring, with the reinforcement bars extending from the impeller baseplate through intermediate impeller rings to a topmost one of the impeller rings.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: March 31, 2020
    Assignee: DEKALB BLOWER INC.
    Inventor: Eric J. Johansen
  • Patent number: 10550854
    Abstract: An impeller wheel for fans has a bottom disc, a cover disc, and three-dimensionally shaped blades connected to the bottom disc and the cover disc. The bottom disc, cover disc, and the blades form a one-piece part. The blades have a leading edge and a trailing edge, wherein the leading edge and the trailing edge each have a median diameter. In a projection onto a cylinder that is coaxial with a rotation axis of the impeller wheel and has a diameter matching a median diameter of the trailing edge or of the leading edge, a first extension of the trailing edge and/or the leading edge is positioned at a first angle and a second extension of the trailing edge and/or the leading edge is positioned at a second angle relative to a line parallel to the rotation axis. At least one of the first and second angles is different from 0°.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: February 4, 2020
    Assignee: Ziehl-Abegg SE
    Inventors: Frieder Lörcher, Andreas Gross, Sandra Hub, Lothar Ernemann, Georg Hofmann
  • Patent number: 10487845
    Abstract: A fan structure includes a first fixing ring and a plurality of fan blades. The first fixing ring includes a plurality of first recesses radially arranged on the first fixing ring. One side of the fan blades is coupled to the first recesses of the first fixing ring. The first fixing ring includes a stamped part and a non-stamped part, in which the stamped part is in contact with the fan blades, and the thickness of the stamped part is smaller to the thickness of the non-stamped part.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: November 26, 2019
    Assignee: Quanta Computer Inc.
    Inventors: Chi-Hsueh Yang, Hsiao-Fan Chang
  • Patent number: 10018201
    Abstract: Embodiments of the application disclose a fan and a mold for making a fan blade structure for the fan. An embodiment of the fan comprises a fan blade structure and the fan blade structure comprises a mounting ring and a plurality of fan blades provided on the mounting ring, wherein mounting ring and the fan blades are integrally formed. The mold comprises a mounting ring and a plurality of fan blades provided on the mounting ring, the mold comprising a cavity having a ring-shaped channel configured for forming the mounting ring and a plurality of fan blade channels configured for forming the plurality of fan blades, in order to integrally form the fan blade structure.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: July 10, 2018
    Assignees: BEIJING LENOVO SOFTWARE LTD., LENOVO (BEIJING) LIMITED
    Inventors: Zizhou Jia, Zhigang Na, Ying Sun
  • Patent number: 9388823
    Abstract: A centrifugal fan includes a plurality of fan blades circumferentially spaced apart from each other. The fan blade has a front edge portion to which air flows in a rear edge portion from which air flows out, and a blade surface extending between the front and rear edge portions. The blade surface includes a pressure surface on the rotation direction side of the centrifugal fan and a suction surface arranged on the back side of the pressure surface. The fan blade has a cross-sectional shape with concave portions formed at the pressure surface and the suction surface. Such a fan has an excellent blowing capacity. A molding die for use in production of the centrifugal fan, and a fluid feeder provided with the centrifugal fan are disclosed.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: July 12, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masaki Ohtsuka, Yukishige Shiraichi
  • Patent number: 9127681
    Abstract: A cross-flow fan includes a plurality of fan blades circumferentially spaced from each other. The fan blade has an inner edge portion on the radially inner side, and an outer edge portion on the radially outer side. A blade surface extends between the inner edge portion and the outer edge portion. The blade surface includes a pressure surface on the rotation direction side of the fan and a suction surface on the opposite side. In cross-section orthogonal to the rotation axis of the fan, the fan blade has a concave portions formed at the pressure surface and the suction surface. A plurality of concave portions are formed at pressure surface. Side fan provides excellent blowing capacity. Also disclosed are a molding die for use in production of the cross-flow fan, and a fluid feeder provided with the cross-flow fan.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: September 8, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masaki Ohtsuka, Yukishige Shiraichi
  • Publication number: 20150054362
    Abstract: A blade wheel for a rotary electric machine may include a hollow cylindrical main body having an outer surface extending around an axis of rotation in a circumferential direction of the main body; a first end region and a second end region of the main body, each peripherally extending around the main body in the circumferential direction, the first and second end regions lying opposite each other in the direction of the axis of rotation; a recess extending along the outer surface and between the first end region and the second end region of the main body in the circumferential direction; and at least one web-shaped vortexing element extending within the recess and between the first and second end regions. The at least one vortexing element is designed to generate a movement of air away from the outer surface when the blade wheel rotates about the axis of rotation.
    Type: Application
    Filed: April 9, 2013
    Publication date: February 26, 2015
    Inventors: Michael Bulatow, Knut Welke, Dirk Wesche
  • Patent number: 8881396
    Abstract: In one aspect, a fan assembly is provided that can be manufactured while producing a significantly reduced amount of scrap material. More specifically, the fan assembly utilizes a hub ring and one or more hub strips to support a plurality of blades rather than a solid center disc or end disc used by some prior approaches. In another aspect, a method is provided that includes bending a member into an annular configuration and joining end portions of the member together to rigidly fix the member in the annular configuration. The rigid annular member may be used as an end ring, a hub ring, an orifice, or other component, while producing significantly less scrap material than traditional approaches.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: November 11, 2014
    Assignee: Revcor, Inc.
    Inventors: Craig R. Hall, Dominic Phillip Menoni, Richard R. Shelby, Stephen A. Adamski, Michael F. Buckley
  • Patent number: 8870540
    Abstract: A water turbine is disclosed comprising a rotor mounted to be rotatable about an axis. The rotor comprises at least three blades for causing the rotor to rotate about the axis when the blades are located in flowing water. The rotor comprises a plurality of members in the form of a triangulated structure, and at least one of said members comprises one of said blades.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: October 28, 2014
    Assignee: Isis Innovation Limited
    Inventors: Guy Tinmouth Houlsby, Malcolm Duncan McCulloch, Martin Louis Gascoyne Oldfield
  • Patent number: 8870541
    Abstract: A centrifugal multiblade fan includes a rotatable shaft, blades, a side shroud, and a main shroud. A front edge has a shape inclined radially outward in a direction from the main shroud toward the side shroud. When viewed from an axial direction, a corner part on a positive pressure surface-side is located on a tangential line of a positive pressure surface reference curve at a positive pressure surface side reference corner part, and when viewed from the axial direction, a curvature radius of a negative pressure surface becomes larger in a direction from the side shroud toward the main shroud.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: October 28, 2014
    Assignees: Denso Corporation, Nippon Soken, Inc.
    Inventors: Syoichi Imahigashi, Masaharu Sakai, Yasushi Mitsuishi
  • Publication number: 20140315479
    Abstract: A turbo fan includes a main plate rotated by power provided from a fan motor, blades each having one end connected to the main plate to perform rotation movement, and a shroud having an inner circumferential part and an outer circumferential part, an other end of each of the blades connected to the shroud. The shroud includes a plurality of curved parts each having one side connected to the inner circumferential part and an other side connected to the outer circumferential part, the plurality of curved parts each having a predetermined curvature.
    Type: Application
    Filed: October 9, 2013
    Publication date: October 23, 2014
    Applicant: LG ELECTRONICS INC.
    Inventors: Namjoon CHO, Kyungrock KIM, Dongkeun YANG
  • Patent number: 8720061
    Abstract: A method for forming an inclined-blade blower wheel is provided by arranging a plurality of blades about respective circumferences of first and second end caps. The plurality of blades extend longitudinally between the first and second end caps and parallel to an axis defined by respective centers of the first and second end caps. The first end cap is rotated with respect to the second end cap a predetermined amount, therein skewing the plurality of blades at a desired longitudinal pitch between the first end cap and second end cap. The first end cap and second end cap are then rotated in unison while crimping the circumferences of the first end cap and second end cap, therein securing the plurality of blades to the first and second end caps and fixing the desired longitudinal pitch of the plurality of blades from the first end cap to the second end cap.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: May 13, 2014
    Assignee: Beckett Air Incorporated
    Inventors: Kenneth Joseph Behner, Joseph Harry Andulics, Mark Stuart Resar, Stephen Joseph Amerla
  • Patent number: 8708653
    Abstract: A fan structure comprises a first impeller and a second impeller, wherein the first impeller is composed of a first annular substrate, a plurality of first ribs and a plurality of first blades. The first ribs and the first blades are formed on the first annular substrate, each of the first ribs comprises an engaging hole, and a first accommodating space is formed between each of the adjacent first blades. The second impeller is composed of a hub, a second annular substrate, a plurality of second ribs, a plurality of second blades and at least one engaging member formed on the second ribs. The second ribs and the second blades are formed on the second annular substrate, and a second accommodating space is formed between each of the adjacent second blades. The first blades and the second blades are arranged in a staggered relationship.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: April 29, 2014
    Assignee: ADDA Corp.
    Inventors: Mao-Sheng Lin, Cheng-Chun Chou
  • Patent number: 8678768
    Abstract: A vertical axis turbine and method of making same is disclosed. The device and method comprise a plurality of blades rotatably disposed around an axis of rotation at a plurality of blade locations, each blade being twisted at a first angle about its longitudinal axis, each blade having its distal ends located a predetermined distance from the axis of rotation, each blade being bent at one or more central locations along the longitudinal axis so the one or more central locations are the same predetermined distance from the axis of rotation as the distal ends, each blade having a foil cross section perpendicular to the axis of rotation for maintaining unidirectional rotation of that blade about the axis of rotation in a fluid flow, and each blade having its longitudinal axis tilted at a second angle with respect to the axis of rotation.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: March 25, 2014
    Assignee: SEaB Energy Ltd.
    Inventor: Nicolas W. Sassow
  • Patent number: 8641364
    Abstract: A paddle wheel rotatable about an axis and exposed to radial inward and crosswise water flow has a hub on the axis and about which the wheel is rotated in a rotation direction about the axis and a plurality of angularly spaced blades spaced radially outward from the hub, forming spaces through which water can flow, and each formed by a plurality of radially spaced arcuate elements each in turn having a radially outer end and a radially inner end. These elements are each concave between the respective ends toward the incoming water flow with the radial outer ends more widely spaced than radial inner ends such that each element forms an acute angle with the adjacent element or elements and the spaces between the blades narrow in a direction of flow of water through them.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: February 4, 2014
    Assignee: Bew Betriebs und Entwicklung von Wasserkraftanlagen GmbH
    Inventor: Hermann Riegerbauer
  • Patent number: 8628302
    Abstract: An impeller comprising: a top shroud; a bottom shroud, a plurality of vanes extending from the top shroud to the bottom shroud, each said vane including a top edge at a radially inner portion of the vane in contact with the top shroud and a bottom edge at a radially outer portion of the vane in contact with the bottom shroud, such that a radially inner portion of the vane at the bottom edge of each vane is not in contact with or adjacent the bottom shroud and a radially outer portion of the vane at the top edge of each vane is not in contact with or adjacent the top shroud.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: January 14, 2014
    Assignee: Resmed Motor Technologies Inc.
    Inventors: Barton John Kenyon, Nicholas Jerome Reed, Andrew Wilson, Ian Michael Smith
  • Patent number: 8579575
    Abstract: A wind turbine has a spindle, a first fan device and a second fan device. The first fan device is rotatably mounted around the spindle and has a first pivot hole and at least two first blades. The first pivot hole is formed through a center of the first fan device and is mounted around the spindle. The at least two first blades are radially mounted on and protrude from an external surface of the first fan device. The second fan device is rotatably mounted around the spindle, abuts with the first fan device and has a second pivot hole and at least two second blades. The second pivot hole is formed through a center of the second fan device and is mounted around the spindle. The at least two second blades are mounted on and protrude from an external surface of the second fan device.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: November 12, 2013
    Inventor: Shun-Tsung Lu
  • Patent number: 8454316
    Abstract: This invention relates to a radial blade wheel comprising a first (1,1?) and a second (2,2?) end plate arranged at a mutual distance from each other, the first end plate having an opening (6) which allows inflow to the radial blade wheel, and blades (3) arranged between the first and the second end plate. To achieve optimal efficiency for the radial blade wheel, the radial blade wheel comprises an inner part with blades, in which curvature (R1) of the blades (3) is shaped to bring motion energy to the flowing particles while the radial blade wheel is rotating, and an outer part with blades, in which curvature (R2) of the blades (3) is shaped not to bring motion energy to the flowing particles while the radial blade wheel is rotating.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: June 4, 2013
    Assignee: Flakt Woods AB
    Inventor: Rune Svensson
  • Patent number: 8419360
    Abstract: A multi-blade centrifugal fan for preventing circular flows in the end portions of an impeller in the axial direction is provided in a simple structure. The multi-blade centrifugal fan is formed of a fan casing of a scroll type and a multi-blade centrifugal impeller. The fan casing has a bellmouth which becomes an air intake. The multi-blade centrifugal impeller has a number of annularly arranged blades inside the fan casing. The centrifugal impeller draws in air through the intake, which faces the bellmouth, and blows out the air in the centrifugal direction through the blades. A retainer ring is provided in an outer peripheral end portion of the impeller. A cylindrical body is integrally provided in such a manner as to extend from the outer end of the retainer ring, so that circular flows toward the intake side are prevented in the end portions of the impeller.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: April 16, 2013
    Assignee: Daikin Industries, Ltd.
    Inventors: Takahiro Yamasaki, Akira Komatsu, Tooru Iwata
  • Patent number: 8240997
    Abstract: Centrifugal impeller (14) of centrifugal air blower (1) has main plate (15); a plurality of blades (18); ring-shaped plate (20); and a cylindrical wall (22). The blades (18) are circumferentially disposed on the side of the outer periphery of front side (17) of main plate (15). Ring-shaped plate (20) is attached to tip sections (19) of blades (18). Cylindrical wall (22) is disposed on the back side (21) of the main plate (15) so as to be concentric therewith. The structure above provides centrifugal impeller (14) and centrifugal air blower (1) with improved air-blow efficiency and noise-reduced operations.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: August 14, 2012
    Assignee: Panasonic Corporation
    Inventors: Seiji Shirahama, Hitoshi Yoshikawa
  • Patent number: 8235668
    Abstract: A multiblade air blower has a multiblade impeller, an orifice, an axially overlaid portion, and an airflow collision prevention device. The multiblade impeller includes a main plate and a blade. The blade is provided at the main plate to form a blade inner periphery. The orifice has an open end and an orifice inner periphery. The open end is positioned toward the main plate from a blade end face. The orifice inner periphery has an inner diameter larger than that of the blade inner periphery, and guides air to the multiblade impeller. The axially overlaid portion is a part where the orifice and the blades are overlaid. The airflow collision prevention device is provided at the blade and at an inner side of the orifice inner periphery. The multiblade air blower suppresses loss of air distribution efficiency and increased noise.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: August 7, 2012
    Assignee: Panasonic Corporation
    Inventor: Seiji Shirahama
  • Patent number: 8192165
    Abstract: An impeller of a multiblade fan includes a discoid main plate that rotates about a rotational axis, blades, and a side plate. The blades are disposed annularly about the rotational axis on one side of the main plate, with one end of each of the blades being fixed to an outer peripheral portion of the main plate. The side plate includes an annular side plate body portion that joins outer peripheral edges of the other ends of the blades to each other, an axially extending portion that extends from an opposite-main plate side end of the side plate body portion in the rotational axis direction further than the opposite-main plate side ends of the blades, and a radially extending portion that extends from an outer peripheral end of the side plate body portion further than a radial-direction outer peripheral end of the axially extending portion.
    Type: Grant
    Filed: September 5, 2005
    Date of Patent: June 5, 2012
    Assignee: Daikin Industries, Ltd.
    Inventor: Masahito Higashida
  • Patent number: 8177511
    Abstract: A blower wheel comprising a centerdisk comprising a conical portion (16), a planar portion (160) for receiving a hub (7), and an arcuate portion (15) intermediate the conical portion and an outer portion (14), a plurality of blades (2) connected to the outer portion, the blades further connected to a ring (3), and a hub connected to the planar portion, the hub comprising a fastener (13) for attaching the centerdisk to a shaft (200).
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: May 15, 2012
    Assignee: Lau Industries
    Inventors: Michael Brendel, Timothy Schrand
  • Patent number: 8167562
    Abstract: A centrifugal fan includes a plurality of blades, a first wall disposed at first axial ends of the blades, and a second wall disposed at second axial ends of the blades and having a shaft portion at a center. At least one of the first wall and the second wall has a cutout portion configured to control balance.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: May 1, 2012
    Assignee: Denso Corporation
    Inventors: Masaharu Sakai, Yoshiki Kondo, Toshinori Ochiai, Tomonori Akatsuka
  • Patent number: 8128369
    Abstract: According to embodiments of the invention, an impeller includes a hub, and a plurality of radial blades for drawing the air inflow axially through the hub and delivering the drawn air radially towards the outside. A ring is attached to one or more tips of the plurality of radial blades to block a portion of the tip toward the inlet side of the impeller. The preferred blockage factor, which is the ratio of a height of the ring to a height of the tip, is approximately in a range between 30% and 40%. By blocking a portion of the tip toward the inlet side of the impeller, the low-momentum flow zone toward the inlet side of impeller is blocked, while the high-momentum flow zone toward the back side of impeller is enhanced. As such, the performance of the impeller is enhanced.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: March 6, 2012
    Assignee: Minebea Co., Ltd.
    Inventors: Yousef Jarrah, Hanson Situ, Thang Nguyen
  • Patent number: 8113782
    Abstract: An impeller structure includes a hub having a central spindle, and an impeller. The impeller has a top connection ring, a bottom connection ring, a pressure-retaining ring and a plurality of blades vertically arranged around the periphery of the hub. A top side outer edge of each blade is connected with a top connection ring, an bottom side of the inner side of the blade is connected with a bottom connection ring, the outer side is connected with the pressure-retaining ring, and a plurality of ribs extend outwards from the bottom edge of the periphery of the hub connecting with the bottom connection ring. A pressure relief hole is provided between the pressure-retaining ring and the bottom connection ring. When air passes through the pressure relief hole, a pressure effect is generated, increasing air pressure and volume of blower, alleviating turbulence. The pressure-retaining ring also reinforces the blade strength.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: February 14, 2012
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Alex Horng, Chen-His Lee
  • Patent number: 8096773
    Abstract: A vertical axis wind turbine has a stator shaft, an electrical generator, a rotating shaft and multiple blades. The electrical generator is rotatably mounted around the stator shaft. The rotating shaft is mounted on and protrudes from the electrical generator. The multiple blades are disposed around the electrical generator and orientated to balance each other. Each blade is connected to the rotating shaft by at least one strut and has a luff edge tapering to a lee edge. The at least one strut is formed on and protrudes from the blade is connected to the rotating shaft. The blades are rotated by the wind independent of wind direction and rotate the electrical generator to convert wind power into electric power.
    Type: Grant
    Filed: March 11, 2009
    Date of Patent: January 17, 2012
    Inventor: Chin-Feng Chang
  • Patent number: 8092181
    Abstract: A resin cross flow fan and a method for manufacturing a resin cross flow fan are provided in which an annealing step can be omitted and the number of circular disks can be reduced, and which provides improved fan strength and air blowing performance. A resin cross flow fan is disposed with a plurality of blades and a plurality of plates. The plurality of blades are annually disposed about a rotation axis. Insertion portions each constituted by a hole or a groove into which each blade is inserted and projecting portions that projects from the periphery of the insertion portions in a direction of the rotation axis are formed on each of the plurality of plates disposed spaced apart in the direction of the rotation axis. Each blade is fixed to the projecting portions by laser welding.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: January 10, 2012
    Assignee: Daikin Industries, Ltd.
    Inventor: Hisanori Nishino
  • Patent number: 8061993
    Abstract: A vertical axis turbine and method of making same is disclosed. The device and method comprise a plurality of blades rotatably disposed around an axis of rotation at a plurality of blade locations, each blade being twisted at a first angle about its longitudinal axis, each blade having its distal ends located a predetermined distance from the axis of rotation, each blade being bent at one or more central locations along the longitudinal axis so the one or more central locations are the same predetermined distance from the axis of rotation as the distal ends, each blade having a foil cross section perpendicular to the axis of rotation for maintaining unidirectional rotation of that blade about the axis of rotation in a fluid flow, and each blade having its longitudinal axis tilted at a second angle with respect to the axis of rotation.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: November 22, 2011
    Assignee: Seab Energy Ltd.
    Inventor: Nicolas W. Sassow
  • Patent number: 8025478
    Abstract: An impeller plate of an impeller of a centrifugal pump, particularly a channel impeller pump, for pumping liquids with solid or gaseous admixtures, is provided with at least one wide vane that is displaced toward the impeller drive by a distance D so that the impeller chamber is enlarged by a rearward portion thereof. In addition, the impeller comprises at least one auxiliary vane having a center width at between 25%-75% of the width of the wide vane. This arrangement improves particularly the gas transporting ability of the pump.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: September 27, 2011
    Assignee: Egger Pumps Technology AG
    Inventors: Michel Grimm, Jean-Nicolas Favre, Hagen Renger
  • Patent number: 7909577
    Abstract: A venturi receives incoming material through an inlet tube and subjects the material to pulverization. The material, as it undergoes pulverization, is further subject to moisture extraction and drying. An airflow generator, coupled to the venturi, generates a high speed airflow to pull the material through the venturi and into an inlet aperture in the airflow generator. The airflow generator directs the received pulverized material to an outlet where the material may be subsequently separated from the air.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: March 22, 2011
    Assignee: PulverDryer USA, Inc.
    Inventors: William Graham, Levi New, Wayne Arthur Case
  • Patent number: 7905708
    Abstract: A fan comprises an impeller and a motor. The impeller has a hub, a plurality of blades and a plurality of reinforced elements. The blades are disposed around the hub. At least one reinforced element is disposed on the active surfaces of two adjacent blades. The blades and the reinforced elements are integrally formed as a single piece. The motor connects to the impeller for driving it to rotate.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: March 15, 2011
    Assignee: Delta Electronics Inc.
    Inventors: Jui-Ting Fan, Cheng-Shu Yu, Peng-Chu Tao, Wen-Shi Huang
  • Publication number: 20100329871
    Abstract: A fan assembly for directing fluid flow in a hybrid radial and axial direction includes a backplate having an inner diameter portion and a substantially frusto-conical outer diameter portion positioned about a center axis (CL), a plurality of blades extending from the backplate, and an annular fan shroud positioned adjacent to the plurality of blades and configured for co-rotation therewith. The backplate, the plurality of fan blades and the fan shroud form a fan subassembly, and an overall depth of the fan subassembly is approximately 20-35% of an overall fan subassembly diameter (øD1).
    Type: Application
    Filed: February 19, 2009
    Publication date: December 30, 2010
    Applicant: HORTON, INC.
    Inventors: Kevin M. Cahill, Hooshang Didandeh, Eugene Elvin Williams
  • Patent number: 7815419
    Abstract: An impeller is provided for a blower having a blade (15), a plurality of notches (17) provided at predetermined intervals on a side edge of the blade (15), and a plurality of smooth portions (18) each provided between a pair of the notches (17). Since a transverse vortex discharged from the side edge of the blade (15), and on a large scale, is organized by vertical vortexes formed in the notches (17) on a small scale so as to be segmented into stable transverse vortexes, it becomes possible to reduce aerodynamic noise.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: October 19, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Hironobu Teraoka, Hirohiko Matsushita, Tadashi Ohnishi, Hideshi Tanaka, Kouzou Yoshinaga
  • Patent number: 7771169
    Abstract: A plurality of curved rectangular blades are arranged in a circumferential direction on a periphery of a disc, forming a pipe-like basket shape with an opening on a front side of the disc. Rotation of the disc draws in air from the opening and draws out the air in a centrifugal direction through a space between the blades. The blades are formed of a thick plate part close to the disc and a thin plate part that is thinner than the thick plate part and farther than the thick plate part from the disc. A bulge serving as a boundary between the thick plate part and the thin plate part is formed on a negative pressure surface of the blades, which is of curved convex shape.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: August 10, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hitoshi Kikuchi, Kazuki Okamoto, Shoji Yamada, Yasuyoshi Makino
  • Patent number: 7758299
    Abstract: A wind turbine for generating electricity is configured as a drum with a housing that has adjustable shutters to control the amount of wind reaching the turbine blades. Alternatively, the turbine blades can be pivotably mounted and opened and closed using a cam follower, cam track system to minimize wind exposure to downstream turbine blades.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: July 20, 2010
    Inventor: Frank Jarecki
  • Patent number: 7744350
    Abstract: A multi-blade fan includes a spirally-shaped housing which has a bell-mouth orifice on one side, a sucking inlet and an exhausting outlet, an impeller which is placed in a housing and has a plurality of blades supported by a main plate and a lateral plate at both the axial ends, and a motor for driving the impeller. A cross section, cut along vertically with respect to a rotary shaft of the impeller, of each one of the blades has a given shape which allows a main air stream to flow along a back face of each one of blades.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: June 29, 2010
    Assignee: Panasonic Corporation
    Inventors: Kazuo Ogino, Kazuya Omori
  • Patent number: 7742302
    Abstract: An axial-flow fan unit that produces less noise is provided. Blades 19 are exposed from a venturi 29. The shape of each of the blades 19 is so defined that a space formed between at least an inner surface 28a of each of web leg sections 28A to 28C and an edge 19a of each of the blades 19 located in the radially outward direction of the blades 19 expands toward the ends of the web leg sections 28A to 28C (or web bodies 30A to 30C). With this arrangement, noise produced when the blades 19 rotate along the web leg sections 28A to 28C is reduced.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: June 22, 2010
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Michinori Watanabe, Toshiki Ogawara, Haruhisa Maruyama
  • Publication number: 20090246026
    Abstract: An impeller is provided having a first plate, a second plate, a plurality of blades being positioned between and connected to the first and second plates, and at least one brace member having first and second planes positioned between and connected to two blades such that the brace extends generally perpendicular from the first blade and extends from the second blade at an angle.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 1, 2009
    Applicant: THE NEW YORK BLOWER COMPANY
    Inventor: Tony E. Key
  • Patent number: 7503746
    Abstract: A fan of a heat sink comprising a hub, a plurality of ribs and a set of blades is provided. A distal end of the ribs is connected to circular sidewall of the hub and the set of blades are connected to the primal end of the ribs. The set of blades comprises an outer ring, multiple first blades, a guiding ring connected to the inner side of the first blades and multiple second blades positioned at the inner side of the first blades extending upwards from the top side of the guiding ring. The primal end of the ribs is connected to the guiding ring having an inclined slope extending from the hub towards the outer ring. The first and the second blades are adopted for increasing the air flow area, and thereby increase the air volume and air pressure and the inclined slope of the guiding ring is adopted to smoothly change the flow direction of the sucked air and thereby reduce the resistance to the air flow.
    Type: Grant
    Filed: May 1, 2006
    Date of Patent: March 17, 2009
    Assignee: Asia Vital Components Co., Ltd.
    Inventors: Hung-Sheng Liu, Ya-Yu Cao
  • Patent number: 7500830
    Abstract: A venturi receives incoming material through an inlet tube and subjects the material to pulverization. The material, as it undergoes pulverization, is further subject to moisture extraction and drying. An airflow generator, coupled to the venturi, generates a high speed airflow to pull the material through the venturi and into an inlet aperture in the airflow generator. The airflow generator directs the received pulverized material to an outlet where the material may be subsequently separated from the air.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: March 10, 2009
    Assignee: Power Technologies Investment Ltd.
    Inventors: William Graham, Levi New, Wayne Arthur Case
  • Patent number: 7481616
    Abstract: 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 m/s2 or more, the static pressure that the fan generates is heightened. At the same time, rendering the vane spacing a predetermined width or less reduces noise. Configuring in this way produces a small-scale, high-static-pressure, low-noise fan for cooling electronic devices. Furthermore, by mounting the centrifugal fan on a heatsink having densely arranged heat-dissipating projections a small-scale, high-cooling-capacity, quiet cooling device is realized.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: January 27, 2009
    Assignee: Nidec Corporation
    Inventors: Toru Tamagawa, Yusuke Yoshida
  • Patent number: 7422418
    Abstract: 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 in a range of 1.3 to 1.6, preferably, 1.4 to 1.5, in which Sa is a sectional area of a fan inner peripheral side half portion of the blade and Sb is a sectional area of a fan outer peripheral side half portion of the blade at a time when the fan blade is cut perpendicularly with respect to a longitudinal direction of the fan blade and divided into two sectional areas along a central division line in a blade chord direction.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: September 9, 2008
    Assignee: Toshiba Carrier Corporation
    Inventors: Mitsuyoshi Ishijima, Kaku Okada
  • Patent number: 7399161
    Abstract: 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 forward leaning structure. A chamfer structure also can be formed at a paraxial side of each blade to enlarge the air inlet of the fan. Each blade further includes a protrusion, which is located at a side opposite to the inlet and extends toward a center of the hub, to increase the airflow rate through the fan motor. The centrifugal fan further includes an anti-decompression cap connected to an inlet side of the impeller to prevent an axial flow of the intake air from decompression.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: July 15, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Yu-Chien Kao, Tsu-Liang Lin, Kuo-Cheng Lin, Wen-Shi Huang
  • Patent number: 7364411
    Abstract: 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 breaking the flow of air along the rotational axis, and an opening at the other axial end. The impeller is configured so that the radius r to the outer circumference of the impeller blade unit is smaller than the axial height h of the impeller. When an airflow that enters through the impeller opening is forced out towards outer periphery of the impeller blade unit, windage loss at the wall surface of the lower endwall portion of the impeller is reduced, which realizes high-efficiency cooling performance that complements motor performance.
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: April 29, 2008
    Assignee: Nidec Corporation
    Inventors: Toru Tamagawa, Yusuke Yoshida
  • Patent number: 7351031
    Abstract: 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 opening. The impeller is rotatably mounted in the compartment and includes a hub and a plurality of blades. The guiding cover is mounted on top edges of the blades and includes an axial air inlet in a central portion thereof. The guiding cover covers the axial opening of the compartment without in contact with the housing. The blades and the guiding cover turn synchronously when the impeller turns. Airflow is driven by the blades and guided by the guiding cover and exits the housing via the radial air outlet.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: April 1, 2008
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Alex Horng, Mei-Chih Fang, Yu-Yuan Lu
  • Patent number: 7329100
    Abstract: 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 includes an outer circular hub partially covering an outer peripheral edge of the blade, and an inner circular hub partially covering an inner peripheral edge of the blade. The hubs are concentrically formed, and an opening is provided between the inner and outer circular hubs. The inner circular hub, outer circular hub and opening are arranged to allow air to flow back across the inner circular hub and within the casing to cool a control circuit disposed within the casing.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: February 12, 2008
    Assignee: Japan Servo Co., Ltd.
    Inventors: Yoshio Kashiwazaki, Youichi Nagata
  • Patent number: 7311494
    Abstract: 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 from the axis for drawing air axially into the fan blades and blowing air radially outwardly. The housing defines a scroll wall that spirals about the axis and defines an outlet air passage that extends substantially tangentially to the axis. The fan blades include extensions that extend through the inlet opening and outside of the inlet wall.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: December 25, 2007
    Assignee: Delphi Technologies, Inc.
    Inventors: Ashraf Farag, Steven C. Guzy