Runner Having Full Circular Shroud For Blades Patents (Class 415/228)
  • Patent number: 11096335
    Abstract: An agricultural storage system including an agricultural storage bin for storing agricultural products therein. At least a mixed air flow fan is connected to the agricultural storage bin for generating an air flow and air pressure and providing the same to the agricultural storage bin.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: August 24, 2021
    Assignee: S3 ENTERPRISES INC.
    Inventors: Al Marques, Jeff Powell
  • Patent number: 11092165
    Abstract: A centrifugal compressor includes a housing which includes a scroll portion with a spiral scroll flow passage being formed on an outer peripheral side of an impeller, and a diffuser portion with a diffuser flow passage being formed, the diffuser flow passage extending along the scroll flow passage on a radially inner side of the scroll flow passage and communicating with the scroll flow passage. The diffuser flow passage includes an inner flow passage portion extending from an inlet portion of the diffuser flow passage to a throat portion with a flow passage height thereof decreasing, and an outer flow passage portion extending from the throat portion to an outlet portion of the diffuser flow passage.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: August 17, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventor: Yoshihiro Hayashi
  • Patent number: 10330121
    Abstract: Methods and apparatuses are provided for a compressor. The compressor includes a first stage having a first rotor and a first stator, and a second stage downstream from the first stage in a direction of a fluid flow. The compressor also includes a secondary flow system that directs fluid from the second stage into the first stator to improve at least one of a performance and a stability of the compressor.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: June 25, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Bruce David Reynolds, David Richard Hanson, John Repp, Michael Todd Barton, John A. Gunaraj
  • Publication number: 20150098818
    Abstract: This disclosure relates generally to fan shrouds for machine fans, and, more particularly, to the structure and design of double bell mouth shrouds and placement of double bell mouth shrouds relative to a machine fan. In some examples, a fan shroud encircling a circular fan having a plurality of fan blades can be provided. Some example fan shrouds can include an inlet adapted to receive air and an outlet adapted to outlet air. The inlet can include an inlet radius, and the outlet can include an outlet radius. In some examples, the outlet radius can each be about 10% of the fan diameter.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Applicant: Caterpillar Inc.
    Inventors: Kory Leesman, Jim Carroll
  • Publication number: 20140321968
    Abstract: An inside vessel arrangement (5) is fixedly secured in a stator hollow structure (8) and has at least one enlarged static circumference housing (20), and an aerodynamic outer toroid spoiler (18) has an outer external surface (35) complementary to the static circumference housing (20). The aerodynamic outer toroid spoiler (18) radially secured to each of outer tips (23) of rotor blades (10) of a driven rotor system (7). A torus air gap (G) is provided, so that an outer laminar flux (56) is admitted simultaneously with an inlet inner stream (54) and guided through the torus air gap (G), with the inlet main stream and outer laminar flux being converged to merge together in single outlet control airflow (C). The invention typically applies e.g. to vehicles (A) such as aircrafts like rotary wing aircrafts.
    Type: Application
    Filed: April 9, 2014
    Publication date: October 30, 2014
    Applicant: AIRBUS HELICOPTERS DEUTSCHLAND GMBH
    Inventor: Wolfgang KREITMAIR-STECK
  • Publication number: 20140294582
    Abstract: A compressor of the present invention includes an impeller that is rotatably provided inside an accommodation portion of a compressor casing, the impeller includes a blade that extends toward an inner peripheral surface of the accommodation portion, and an outer edge of the blade facing the inner peripheral surface of the accommodation portion is provided with a shroud portion that is formed from a resin layer. With such a configuration, the wear damage of the casing and the blade of the blade wheel may be prevented, and the effort and the time in the manufacturing process may be reduced.
    Type: Application
    Filed: February 5, 2014
    Publication date: October 2, 2014
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventor: Koumei FUJIOKA
  • Publication number: 20140169937
    Abstract: Example embodiments are directed to fluid turbines that include a turbine shroud, a rotor and an ejector shroud. The turbine shroud includes an inlet, an outlet, a leading edge and a trialing edge. The leading edge of the turbine shroud can be round and the trialing edge of the turbine shroud can include linear faceted segments. The rotor can be disposed within the turbine shroud and can define a rotor plane. The turbine shroud can provide a first portion of a fluid stream to the rotor plane via the inlet of the turbine shroud. The ejector shroud can provide a second portion of the fluid stream to the outlet of the turbine shroud via an open area. An example method of operating a fluid turbine is also provided.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 19, 2014
    Applicant: FLODESIGN WIND TURBINE CORP.
    Inventors: Daniel Gysling, Ercan Dumlupinar
  • Publication number: 20130323100
    Abstract: A nozzle for a fan assembly includes an air inlet, an air outlet, an interior passage for conveying air from the air inlet to the air outlet, an annular inner wall, and an outer wall extending about the inner wall. The interior passage is located between the inner wall and the outer wall. The inner wall at least partially defines a bore through which air from outside the nozzle is drawn by air emitted from the air outlet. A flow control port is located downstream from the air outlet. A flow control chamber is provided for conveying air to the flow control port. A control mechanism selectively inhibits a flow of air through the flow control port to deflect an air flow emitted from the air outlet.
    Type: Application
    Filed: November 21, 2012
    Publication date: December 5, 2013
    Applicant: DYSON TECHNOLOGY LIMITED
    Inventor: Dyson Technology Limited
  • Patent number: 8596964
    Abstract: In a hydroelectric turbine having a rotor disposed within a housing, the rotor having an annular outer rim received by a channel in the housing, the improvement comprising providing at least one debris release chute in said housing such that debris captured between the rotor and the housing is released through the debris release chute.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: December 3, 2013
    Assignee: OpenHydro Group Limited
    Inventor: James Ives
  • Patent number: 8568095
    Abstract: An axial fan assembly including a casing wall with a forward facing step formed therein and a fan rotor with blade tips, each having an aft facing step which radially overlaps the casing step so as to reduce the clearance backflow loss in the assembly. A vane is attached to the suction side of each of the blade tips with the vane having an aft facing step which radially overlaps the casing forward facing step to promote further reduction of clearance backflow. Variations on the invention include the option of an additional inlet bellmouth piece that further restricts the clearance flow and wedges integral to the casing step to improved flow stability.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: October 29, 2013
    Assignee: Carrier Corporation
    Inventor: Peter R. Bushnell
  • Patent number: 8424305
    Abstract: A turbocharger unit (18) for an internal combustion engine (10) with at least one exhaust line (15, 16) for conducting exhaust gases away from the combustion chamber (11) of the engine and at least one inlet line (12) for supplying air to the combustion chamber. The turbocharger unit includes a turbine (17) which interacts with a compressor (19) for extracting energy from the exhaust gas flow of the engine and pressurizing the inlet air of the engine. The compressor (19) is of radial type and provided with an impeller with backswept blades (35) where the blade angle (?b2) between an imaginary extension of the center line of the blade between root section and tip section in the direction of the outlet tangent and a line (36) which connects the center axis of the impeller to the outer tip of the blade is at least roughly 45°. The turbine (17) which drives the compressor (19) is of radial type.
    Type: Grant
    Filed: November 15, 2005
    Date of Patent: April 23, 2013
    Assignee: Volvo Lastvagnar AB
    Inventors: Lars Sundin, Magnus Ising, Sebastian Krausche, Per Andersson
  • Patent number: 8303244
    Abstract: The invention concerns an engine-mounted fan shroud for use in a vehicle that has a shroud body supported by a vehicle engine, including an outer ring made of a first material having a first stiffness, and a bodyside seal extending from and being integral with the outer ring, with the bodyside seal being made of a second material having a second stiffness that is less than the first stiffness. The bodyside seal fits into and seals around a seal opening in a body-mounted shroud that is mounted to radiator support structure.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: November 6, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Joseph H. Alexander, Jeffrey R. Tatrow, Paul R. Mueller
  • Patent number: 8277180
    Abstract: The invention relates to an axial fan (1) for conveying cooling air for a cooling device of a motor vehicle, wherein the axial fan (1) has axial vanes (4) each having a front edge (4a) and a rear edge (4b), a van tip (4c) and a circumferential ring (5) which is connected to the vane tips (4c) and has an approach edge (5a) and a dispersing edge (5b). It is proposed that the approach edge (5a) of the circumferential rind (5) is set back in the flow direction (L) in relation to the front edges (4a) of the axial vanes (4).
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: October 2, 2012
    Assignee: Behr GmbH & Co. KG
    Inventors: Uwe Blass, Ulrich Vollert
  • Patent number: 8210794
    Abstract: A compressor includes a housing, a rotor, an impeller, and a ported shroud. The rotor is mounted within the housing, and has a first leading edge and a first trailing edge. The rotor is operable, upon rotation thereof, to compress air and to discharge the air in an approximately axial direction. The impeller is mounted within the housing, and has a second leading edge and a second trailing edge. The impeller is operable, upon rotation thereof, to receive the air discharged from the rotor, to further compress the air, and to discharge the air in an approximately radial direction. The shroud at least partially surrounds the impeller. The shroud has an opening therein to at least facilitate allowing the air to travel upstream of the opening.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: July 3, 2012
    Assignee: Honeywell International Inc.
    Inventors: Nick A. Nolcheff, Michael T. Barton
  • 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
  • Publication number: 20110308229
    Abstract: An impeller for use in a containment structure has a hub, a blade attaching to the hub for compressing air as the blade rotates with the hub, and an annulus disposed about the hub whereby the annulus reduces an effect of the hub breaking apart such that a weight of the containment structure is reduced.
    Type: Application
    Filed: June 18, 2010
    Publication date: December 22, 2011
    Inventor: Behzad Hagshenas
  • Publication number: 20110266802
    Abstract: A system for generating energy from waste includes a generator device and an ejector device integrated in a pipe line unit. The generator device includes nozzle venture inlets. The ejector device is coupled with the generator device and includes a slit venture outlet to restore any velocity pressure loss in the pipe line unit and eliminate any back pressure buildup in the generator device.
    Type: Application
    Filed: April 15, 2011
    Publication date: November 3, 2011
    Inventor: Mujeeb Ur Rehman Alvi
  • Patent number: 8043050
    Abstract: A gap seal (9) radially seals a gap (8) which extends axially and radially between two blades (1, 2) of a turbomachine which are adjacent in the circumferential direction (3). The two blades (1, 2) have, in each case, an axially extending longitudinal slot (10, 11), which is open towards the gap (8), on its respective blade root (6, 7). A band-form or strip-form sealing element (12) engages with its longitudinal sides (13, 14) in the two longitudinal slots (10, 11) and bridges the gap (8). The one blade (1) has a projection (15) on its blade root (6), which projects from the blade root (6) in the circumferential direction (3) and extends in the circumferential direction (3) and radially, at least in the region of the respective longitudinal slot (10), and bridges an axial longitudinal end of the gap (8) in the process. The other blade (2) has a step-shaped recess (16) on its blade root (7), complementary to the projection (15) of the one blade (1) and in which the projection engages.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: October 25, 2011
    Assignee: ALSTOM Technology Ltd.
    Inventors: Thomas Heinz-Schwarzmaier, Sven Olmes, Ronald Wifling
  • Patent number: 7927065
    Abstract: The present invention relates to a wind power plant. It comprises a stator, a rotor, which is supported by the stator, a circular guide device, which has a plurality of fastening points provided on the periphery, at least two rotor blades, which each at the proximal end thereof are rotatably supported on the rotor and with the distal end thereof are rotatably supported by the annular guide device, and a plurality of tensioning ropes, which under tension connect the fastening points of the circular guide device to the stator for stable holding of the circular guide device in a position that is concentric to the rotor.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: April 19, 2011
    Inventor: Manfred Moehring
  • Publication number: 20100329855
    Abstract: A fan shroud with modular vane members for a cooling system. A plurality of modular vane set members are positioned around the inner surface of the fan shroud ring, each of the modular vane set members having a plurality of vane members. The modularity provides flexibility and versatility for the fan shroud and corresponding efficiencies in costs and manufacturing.
    Type: Application
    Filed: February 18, 2009
    Publication date: December 30, 2010
    Applicant: BORGWARNER INC.
    Inventors: Thomas M. Tembreull, Kevin M. Taylor
  • Patent number: 7794204
    Abstract: The present invention provides an axial fan including a hub adapted for rotation about a central axis and a plurality of blades extending radially outwardly from the hub and arranged about the central axis. Each of the blades includes a root, a tip, a leading edge between the root and the tip, and a trailing edge between the root and the tip. Each of the blades defines a blade radius between the blade tips and the central axis. Each of the blades defines a decreasing skew angle within the outer 20% of the blade radius. The ratio of blade pitch to average blade pitch increases from a lowest value to a highest value within the outer 20% of the blade radius. The highest value is about 30% to about 75% greater than the lowest value.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: September 14, 2010
    Assignee: Robert Bosch GmbH
    Inventors: William Stevens, Robert W. Stairs
  • Patent number: 7762769
    Abstract: The present invention provides an axial fan assembly including a motor having an output shaft rotatable about a central axis and a shroud coupled to the motor. The shroud includes a substantially annular outlet bell centered on the central axis. The axial fan assembly also includes an axial fan having a hub coupled to the output shaft for rotation about the central axis, a plurality of blades extending radially outwardly from the hub and arranged about the central axis, a substantially circular band coupled to the tips of the blades, and a plurality of leakage stators positioned radially outwardly from the band and adjacent the outlet bell.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: July 27, 2010
    Assignee: Robert Bosch GmbH
    Inventors: William Stevens, Robert W. Stairs
  • Publication number: 20100111698
    Abstract: An airflow apparatus comprising a stator section, at least one stator blade and a plurality of mounting flanges disposed on the stator section is provided. Additionally, the airflow apparatus includes at least one slot disposed between the plurality of mounting flanges, a rotor assembly coupled to the at least one stator blade, whereby the rotor assembly has a proximal end and a distal end. Furthermore, the airflow apparatus includes at least one fan blade coupled to the rotor assembly. The airflow apparatus also includes a locking apparatus, whereby the locking apparatus includes at least one mounting member and at least one coupling member, wherein the at least one slot is coupled to the at least one coupling member.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 6, 2010
    Inventors: Bryce Wiedeman, Phillip E. Thibodeau
  • Publication number: 20100008775
    Abstract: A flow-routing component of a pump is composed of at least two parts, a first part (2) of the component being manufactured by metal-powder injection molding, and a second part (4) of the component being manufactured from sheet metal. A pump assembly is also provided having such a flow-routing component.
    Type: Application
    Filed: July 10, 2009
    Publication date: January 14, 2010
    Applicant: GRUNDFOS MANAGEMENT A/S
    Inventors: Per Frost VEDSTED, Martin VAD
  • Patent number: 7632063
    Abstract: A fan has a plurality of blades extending in a radial direction with respect to a rotation axis and a ring portion disposed on radial outside edges of the blades. Further, the fan has a first connecting wall and a second connecting wall. The first connecting wall extending from the ring portion to a portion of the radial outside edge of each blade, the portion protruding from the ring portion toward an upstream position with respect to an air flow direction. The second connecting wall has a generally triangular shape. The second connecting wall continuously extends from the first connecting wall and connects to the ring portion on a leading side of the first connecting wall with respect to a rotation direction of the blade. The fan is for example housed in a shroud, thereby to construct a blower unit.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: December 15, 2009
    Assignee: Denso Corporation
    Inventors: Kazuhiro Takeuchi, Takahiro Iwasaki, Shinichi Oda
  • Publication number: 20090214338
    Abstract: A Mixer-Ejector Prop System (MEPS) is presented as a new, unique and improved concept for injecting power and producing force in flowing fluids such as air or water. MEPS incorporates advanced flow mixing technology, single and multi-stage ejector technology, aircraft and propulsion aerodynamics and noise abatement technologies in a unique manner to fluid-dynamically improve the operational effectiveness and efficiency for subsonic flow velocities.
    Type: Application
    Filed: March 24, 2008
    Publication date: August 27, 2009
    Inventors: Michael J. Werle, Walter M. Presz, JR.
  • Publication number: 20090175745
    Abstract: A blower unit for generating air for cooling a heat exchanger includes a plurality of blowers, a single motor, a driving shaft, gears, gear boxes and a joint. The blowers are arranged in parallel with each other with respect to a flow of air passing through the heat exchanger. The driving shaft extends from the motor and is connected to rotation shafts of the blowers through the gears. The gear boxes house the gears therein and support the driving shaft and the rotation shafts of the blowers to be rotatable. The driving shaft is divided into a plurality of shaft parts in a longitudinal direction thereof. The adjacent shaft parts are connected to each other through the joint.
    Type: Application
    Filed: January 6, 2009
    Publication date: July 9, 2009
    Applicant: DENSO CORPORATION
    Inventor: Takuya Usami
  • Patent number: 7435051
    Abstract: A blower is formed with multiple sets of rotatable rings of blades coupled to each other. Multiple inlet rings are correspondingly coupled to the multiple sets of rotatable rings of blades. In one embodiment, the blades may be forward facing blades and include a volute to accomplish pressure recovery. In further embodiments, the blades are backward facing. Such backward facing blades are designed to provide a static pressure rise. In some embodiment, three or more rings of blades with corresponding inlet rings are utilized.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: October 14, 2008
    Assignee: Degree Controls, Inc.
    Inventors: Izuh Obinelo, Rajesh M. Nair
  • Publication number: 20080196678
    Abstract: A shroud 15 attached to an air discharge side of a radiator 13 narrows toward a centrifugal-flow-type rotary fan 11 and forms a cylindrical shape. A surrounding portion 17 is provided so as to surround the rotary fan 11, and a guide portion 19 extending in the centrifugal direction of the rotary fan 11 is provided at the end of the surrounding portion 17. The length of the guide portion 19 is about 6% the diameter of the rotary fan 11. Since this mitigates turbulence of centrifugally flowing air 21 flowing out of the rotary fan 11 and suppress a drop in the amount of air passing through the radiator 13, the cooling capacity of the radiator 13 can be enhanced.
    Type: Application
    Filed: October 26, 2005
    Publication date: August 21, 2008
    Inventors: Naoya Kakishita, Itsuhel Kori, Tetsuzo Furuichi, Makoto Kameda, Yuji Inoue, Masayuki Ogasawara
  • Publication number: 20070286727
    Abstract: A heat dissipation fan includes a housing, a first rotor, a second rotor, a base and a plurality of static blades. The first rotor has a shaft and a plurality of rotor blades. The second rotor is coupled to the first rotor and has a plurality of rotor blades. The base is disposed in the housing for supporting the first and second rotors. The static blades are disposed between the housing and the base, wherein a rear portion of each static blade extends along an axial line of the heat dissipation fan for improving the working efficiency of the second rotor.
    Type: Application
    Filed: February 22, 2007
    Publication date: December 13, 2007
    Inventors: Shun-Chen Chang, Chia-Ming Hsu, Tsung-Yu Lei, Chin-Sheng Liu, Peng-Chu Tao, Chia-Ching Lin, Shih-Wei Huang, Ching-Chuang Mai, Wen-Shi Huang, Hsiou-Chen Chang
  • Patent number: 7163371
    Abstract: A centrifugal fan is configured to be capable of preventing turbulence of the flow in the vicinity of an inlet. The centrifugal fan is a multi blade fan that takes gas in from a rotational axis line direction and blows the gas out in a direction that intersects the rotational axis line, and comprises an impeller and a bell mouth. The impeller rotates about the rotational axis line. The bell mouth has an inlet arranged so that it opposes the impeller, and a recessed part around the inlet that forms a recessed negative pressure space facing the impeller side, and guides the inlet gas to the impeller.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: January 16, 2007
    Assignee: Daikin Industries, Ltd.
    Inventor: Masashito Higashida
  • Patent number: 7118344
    Abstract: A wind power system (1) for generating power is proposed, comprising a rotor which is axially flowed through, is rotatably held on a shaft (2) and is provided with blades (3), as well as a guide device (5) which accelerates the air flow through the rotor (4). In order to provide advantageous conditions for generating power it is proposed that the guide device (5) consists of several flow conduits (6) tapering in the direction of flow, which conduits are arranged on the rotor (4) in a distributed way in the manner of a rim around the shaft (2), that the blades (3) are associated with one flow conduit (6) each and that the rotor (4) comprises an outside jacket (7) enclosing the same.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: October 10, 2006
    Assignee: Gudrun Wieser
    Inventor: Gerhard Wieser
  • Patent number: 7114921
    Abstract: A cooling fan includes a cylindrical boss portion, a plurality of blades extending from the boss portion in a radial direction and a ring member integrated with radial outside edges of the blades. The ring member has an axial dimension smaller than an axial dimension of the blade at the radial outside edge, with respect to an axial direction of the boss portion. The ring member has an extending portion extending in a form of bell toward an upstream position of the blades with respect to an air flow. The extending portion is disposed such that a base point connecting to a body portion of the ring member is arranged in a range that begins at a point 25% and ends at a point 85% of a distance from an upstream end of the radial outside edge of the blade with respect to the axial dimension of the blade.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: October 3, 2006
    Assignee: DENSO Corporation
    Inventors: Takahiro Iwasaki, Takuya Usami
  • Fan
    Patent number: 7086825
    Abstract: A fan is provided for use with a casing having a bellmouth and a conduit portion. The fan has a hub, a number of blades extending from the hub, and a shroud. In cooperation with the casing and the conduit portion surrounding the shroud, the shroud has means for generating a separation bubble effective to limit a recirculation flow.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: August 8, 2006
    Assignee: Carrier Corporation
    Inventors: Yu Wang, Peter R. Bushnell, Xavier Girod
  • Patent number: 6964555
    Abstract: 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 scroll wall and a second protruding portion of the motor scroll wall. A fin is provided in the scrolled air passage as a directing member for directing a secondary flow in a direction parallel to a direction of a primary flow discharging from the centrifugal fan. The fin restricts the secondary flow from colliding with the primary flow, thereby to reduce noise due to interference of the air flows.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: November 15, 2005
    Assignee: Denso Corporation
    Inventors: Toshinori Ochiai, Manabu Miyata
  • Patent number: 6776578
    Abstract: Small winglets placed at the outer end of each fan blade substantially reduce the vortices created in conventional fans by the pressure differential between the low pressure and high pressure sides of the blade. The winglet acts as a barrier, which substantially blocks leakage around the blade tip, thus suppressing vortices. Technical advantages include noise reduction, because there are no shedding vortices to create noise as the blades pass the struts; increased aerodynamic efficiency of the fan, providing higher air flow for the same fan speed, size, and power, because less energy is lost in vortices; and minimal cost impacts, because housings currently used for fans can still be used with standard finger guards and because winglets and blades can be formed integrally of injection molded plastic.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: August 17, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Christian L. Belady
  • Patent number: 6726442
    Abstract: A disc turbine inlet collects working fluid, introduces it into the rotor housing at a defined location and imparted at a defined injection angle with respect to the tangential motion of the discs in rotary motion. An injection angle within the optimum range delineated by this invention enables the working fluid to entrain stationary or slowly rotating discs into motion. The inlet design combines smooth sectional transitions and arcuate directional changes to minimize frictional losses. The inlet has a nozzle section which locates precisely into a receiving aperture of the turbine rotor housing.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: April 27, 2004
    Inventor: Guy Louis Letourneau
  • Patent number: 6558116
    Abstract: A turbo-generator comprising a shaft, on which is positioned an axial ventilator, a cover that divides an inflow chamber for a cooling gas transported by the axial ventilator from an outflow chamber for this cooling gas, and a cylindrical channel segment that is positioned coaxially to the axial compressor and surrounds the axial compressor radially, whereby the inflow chamber comprises an asymmetrical cooling gas supply, and whereby in the inflow chamber means for homogenizing the cooling gas supply to the axial ventilator are provided. In order to improve the cooling, and therefore the efficiency of the machine, the inflow chamber forms a rotation-symmetrical annular chamber in the region of an inflow opening of the channel segment. A cylindrical annular collar is positioned coaxially to the axial ventilator within this annular chamber. The annular collar projects axially into the annular chamber and forms a completely surrounding, radial throttling gap at the inflow opening.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: May 6, 2003
    Assignee: Alstom (Switzerland) Ltd
    Inventors: Juergen Baer, Hermann Eichin
  • Patent number: 6532731
    Abstract: A turbofan engine has a fan bypass duct which is at the center of the engine surrounding the fan and compressor drive shafts and an annular drive engine which is located at the outer periphery of the engine surrounding the bypass duct. The annular drive engine includes an annular shell which has the compressor and turbine mounted on it. The bypass fan is rotatably mounted on a central shaft and the shell is attached to the tips of the fan blades. Thus, the fan and shell rotate together. Because the bypass duct is located at the center of the engine, the fan and compressor drive shafts are not heated by the core engine and remain at approximately ambient temperature.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: March 18, 2003
    Inventor: Gaylen Springer
  • Patent number: 6517315
    Abstract: Small winglets placed at the outer end of each fan blade substantially reduce the vortices created in conventional fans by the pressure differential between the low pressure and high pressure sides of the blade. The winglet acts as a barrier, which substantially blocks leakage around the blade tip, thus suppressing vortices. Technical advantages include noise reduction, because there are no shedding vortices to create noise as the blades pass the struts; increased aerodynamic efficiency of the fan, providing higher air flow for the same fan speed, size, and power, because less energy is lost in vortices; and minimal cost impacts, because housings currently used for fans can still be used with standard finger guards and because winglets and blades can be formed integrally of injection molded plastic.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: February 11, 2003
    Assignee: Hewlett-Packard Company
    Inventor: Christian L Belady
  • Patent number: 6413045
    Abstract: The shroud (26) of a shrouded turbine blade (22) has a convex leading edge (30) the apex of which extends towards the trailing edge of the shroud (24) of an adjacent, preceding guide vane. The extension enables the containment of a reverse flow of high pressure gas from the juncture of the blade aerofoil and shroud, until the pressure has dropped sufficiently to avoid nullifying gas flow from the corresponding portion of the guide vane (20) and thereby reduces excessive hot gas leakage from between the opposing shrouds edges.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: July 2, 2002
    Assignee: Rolls-Royce plc
    Inventors: Stephen N Dancer, Alec G Dodd
  • Patent number: 6398492
    Abstract: An airflow guide stator vane for an axial flow fan and a shrouded axial flow fan assembly having such stator vanes are disclosed. The airflow guide stator vane has a leading edge line, a trailing edge line, and an airflow guide surface extending from the leading edge line to the trailing edge line. The stator vane is radially positioned in an axial flow fan and is curved so that its leading edge line is perpendicular to oblique velocity components of an airflow each of which is a sum vector of a rotation-directional velocity component and a radius-directional component of an air particle of the airflow. The axial flow fan assembly comprises an axial flow fan and a shroud. The axial flow fan consists of a circular central hub connected with a driving shaft of a motor and a plurality of blades radially arranged along the circumference of the hub.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: June 4, 2002
    Assignee: Halla Climate Control Corp.
    Inventors: Kyung Seok Cho, Ok Ryul Min
  • Patent number: 6390770
    Abstract: A fan apparatus includes a fan having a plurality of blades and producing an air flow with revolution thereof. At least one shroud is disposed upstream of the fan for introducing the air flow to the suction side of the fan. Damping means are provided for taking in the air flow coming out of the fan and damping a radial component of the air flow under an interference action outside an outer periphery of the fan.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: May 21, 2002
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventor: Seiichirou Takeshita
  • Patent number: 6328529
    Abstract: A blower for flowing cooling air toward a corrugated fin is disposed to face the corrugated fin. The blower is covered with a blower case. Leg portions are integrally formed with and protrude from the blower case to face the corrugated fin at both sides in a corrugated direction of the corrugated fin. The blower case is fixed to a radiation plate by elastic deformation of the leg portions. The leg portions cover the both sides in the corrugated direction of the corrugated fin, so that the corrugated fin is protected from external force.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: December 11, 2001
    Assignee: Denso Corporation
    Inventors: Hiroo Yamaguchi, Takayuki Hayashi, Kazuaki Kafuku, Takai Okochi
  • Patent number: 6273672
    Abstract: A compression or expansion two-phase helical mixed flow impeller (1) comprising one or more vanes (3) mounted on a boss, a cover (4) or fairing mounted on the outer part of the vanes, the assembly being arranged in a housing (2). The cover (4) has at least one of its ends corresponding to the inlet and/or the outlet of the impeller, a slop whose value is determined so as to limit leaks between the inlet and the outlet of the impeller.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: August 14, 2001
    Assignee: Institut Francais du Petrole
    Inventor: Yves Charron
  • Patent number: 6270310
    Abstract: A fuel pump assembly 10 including a motor 12, a drive shaft 14 which is rotatably coupled to motor 12, an impeller 16, and a chamber assembly 18. Fuel pump assembly 10 has improved efficiency due to the substantial reduction and/or elimination of frictional contact between impeller 16 and the respective interior surfaces 70, 72 of chamber 18.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: August 7, 2001
    Assignee: Ford Global Tech., Inc.
    Inventors: Robert Duane Gaston, Mark Edward Hipp, Dequan Yu
  • Patent number: 6227797
    Abstract: This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blades with the edges of the blades used as hydrodynamic thrust bearing and with electromagnetic torque provided by the interaction between magnets embedded in the blades and a rotating current pattern generated in coils fixed relative to the pump housing.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: May 8, 2001
    Assignee: VentrAssist Pty Ltd and University of Technology
    Inventors: Peter Andrew Watterson, Geoffrey Douglas Tansley, John Campbell Woodard
  • Patent number: 6164911
    Abstract: A compressor for a gas turbine engine, comprising a casing having an inner surface defining a plurality of circumferentially spaced-apart grooves adjacent the tips of a row of rotor blades. Each groove as a depth which is less than half the width thereof in order to increase surge margin at off design points without affecting the performance of the compressor under normal operating conditions.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: December 26, 2000
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Andre Denis LeBlanc, Gilbert Ouellet
  • Patent number: 6142733
    Abstract: A fan assembly comprising a fan, a stationary airflow directing device and a support inner ring. The fan has a hub portion and a plurality of fan blades. Each of the fan blades has a root region and a tip region. The root regions of each fan blade are secured to the hub portion wherein the fan blades extend substantially radially of a fan rotational axis. The airflow directing device has a plurality of stator blades extending radially about the support inner ring. The stator blades receive air flow from the fan and divert the airflow. The surface area of the stator blades is substantially less than the surface area of the fan blades. Each stator blade has a planar surface and a curved surface opposing the planar surface. The planar surface is disposed such that rotational components of air flow from the fan are incident on the planar surface.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: November 7, 2000
    Assignee: Valeo Thermique Moteur
    Inventors: Ahmad Alizadeh, Antony Szczodrowski
  • Patent number: 6027307
    Abstract: A fan includes a hub coupled to a driving shaft of a motor, a plurality of blades installed on the outer circumferential surface of the hub to be spaced from each other at a predetermined interval, and a band connecting free ends of the blades. An axial direction width (W1) between a leading edge and a trailing edge at the free end of each of the blades is greater than a width (W2) of the band.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: February 22, 2000
    Assignee: Halla Climate Control Corporation
    Inventors: Kyung-seok Cho, Jong-yeol Kim, Tae-young Park, Ki-hyo Kim