Coaxial Runners Patents (Class 415/68)
  • Patent number: 10480522
    Abstract: A multi-stage pump stack is disclosed herein wherein the multi-stage pump stack comprises a shaft, a diffuser disposed about the shaft, an impeller disposed within the diffuser, a first thrust ring disposed adjacent to the impeller, and a second thrust ring disposed adjacent to the diffuser. The first and second thrust rings are comprised of a material with a low friction coefficient. Systems and methods for distributing forces in the multi-stage pump stack are also disclosed herein.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: November 19, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Dezhi Zheng
  • Patent number: 10420869
    Abstract: A left ventricular cardiac assist pump includes an inlet opening and a discharge opening aligned in an axial direction. The pump includes a casing spaced from a stator and impeller, with at least one connecting spacer connecting the casing and the stator. The impeller is configured to direct the blood towards the casing and the discharge opening, so that blood flows through the pump principally between the casing and the rotor-stator assembly.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: September 24, 2019
    Assignee: SYSTOL DYNAMICS
    Inventor: Alain Cornen
  • Patent number: 10294821
    Abstract: The present disclosure is directed to a gas turbine engine defining a radial direction, a circumferential direction, an axial centerline along a longitudinal direction, and wherein the gas turbine engine defines an upstream end and a downstream end along the longitudinal direction, and wherein the gas turbine engine defines a core flowpath extended generally along the longitudinal direction. The gas turbine engine includes a turbine frame defined around the axial centerline, the turbine frame comprising a first bearing surface disposed inward along the radial direction. The gas turbine engine further includes a turbine rotor assembly including a bearing assembly coupled to the first bearing surface of the turbine frame and the turbine rotor assembly. The turbine rotor assembly further includes a first turbine rotor disposed upstream of the turbine frame and a second turbine rotor disposed downstream of the turbine frame.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: May 21, 2019
    Assignee: General Electric Company
    Inventors: Thomas Ory Moniz, Alan Roy Stuart, Jeffrey Donald Clements, Brandon Wayne Miller, Darek Tomasz Zatorski, Gert Johannes van der Merwe, Joel Francis Kirk, Richard Wesling
  • Patent number: 9995143
    Abstract: Method, system and axial multistage expander including a casing and a plurality of stages. A stage includes a stator part connected to the casing and having plural statoric airfoils, and a rotor part configured to rotate relative to the stator part and having plural rotoric airfoils. The axial multistage expander also includes a support mechanism connected to the casing and configured to rotatably support the rotor part. Rotoric airfoils of at least one stage of the plurality of stages are configured to rotate with a speed different from rotoric airfoils of the other stages. The stator part, the rotor part and the support mechanism of the plurality of stages are provided inside the casing.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: June 12, 2018
    Inventors: Michele D'Ercole, Simone Billi, Stefania Della Gatta
  • Patent number: 9518586
    Abstract: There is disclosed an inline axial flow fan including at least first and second axial flow fans and arranged in an inline manner along an axial direction of a rotational shaft of a rotational driving apparatus. A first flow control grid is arranged in a gas discharge side of the first axial flow fan, and a second flow control grid is arranged in a gas discharge side of the second axial flow fan. The first flow control grid has a stator blade having a smooth circular arc leading edge shape matching a circular arc shape of the stator blade of the first axial flow fan and a trailing edge shape extending in parallel with a gas flow direction. The second flow control grid has a stator blade having a smooth circular arc shape matching a circular arc shape of the stator blade of the second axial flow fan.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: December 13, 2016
    Assignee: SANYO DENKI CO., LTD.
    Inventors: Jun Chieh Yen, Honami Oosawa
  • Patent number: 9388738
    Abstract: A casing for a can annular gas turbine engine, including: a compressed air section (40) spanning between a last row of compressor blades (26) and a first row of turbine blades (28), the compressed air section (40) having a plurality of openings (50) there through, wherein a single combustor/advanced duct assembly (64) extends through each opening (50); and one top hat (68) associated with each opening (50) configured to enclose the associated combustor/advanced duct assembly (64) and seal the opening (50). A volume enclosed by the compressed air section (40) is not greater than a volume of a frustum (54) defined at an upstream end (56) by an inner diameter of the casing at the last row of compressor blades (26) and at a downstream end (60) by an inner diameter of the casing at the first row of turbine blades (28).
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: July 12, 2016
    Assignee: SIEMENS ENERGY, INC.
    Inventors: David J. Wiebe, David A. Little, Richard C. Charron
  • Patent number: 9364593
    Abstract: An impeller includes a hub and a blade supported by the hub. The impeller has a stored configuration in which the blade is compressed so that its distal end moves towards the hub, and a deployed configuration in which the blade extends away from the hub. The impeller may be part of a pump for pumping fluids, such as blood, and may include a cannula having a proximal portion with a fixed diameter, and a distal portion with an expandable diameter. The impeller may reside in the expandable portion of the cannula. The cannula may have a compressed diameter which allows it to be inserted percutaneously into a patient. Once at a desired location, the expandable portion of the cannula may be expanded and the impeller expanded to the deployed configuration. A flexible drive shaft may extend through the cannula for rotationally driving the impeller within the patient.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 14, 2016
    Assignees: The Penn State Research Foundation, Thoratec Corporation
    Inventors: Mark W. McBride, David A. Boger, Robert L. Campbell, Gregory P. Dillon, Stephen A. Hambric, Robert F. Kunz, Boris Leschinsky, Thomas M. Mallison, James P. Runt, Justin M. Walsh
  • Patent number: 9233577
    Abstract: A hub-bearing assembly (10) for a motor vehicle wheel is provided with a flanged hub (12), a disc brake rotor (40) and a disc-shaped sealing shield (50) having a radially inner mounting portion (51, 51?) mounted with radial interference on a cylindrical surface (30) of the stationary bearing ring (14), a shaped wall (52, 52?) extending radially from an axially inner end (53) of the mounting portion (51), and an outer, peripheral sealing edge (54) defining a labyrinth seal with a surface (46) of the disc brake rotor.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: January 12, 2016
    Assignee: AKTIEBOLAGET SKF
    Inventors: Domenico Bosco, Ajay Thanwal
  • Publication number: 20150125262
    Abstract: A series fan assembling structure includes a connection assembly, a first fan and a second fan. The connection assembly has a first connection member having a first end face and a second end face opposite to the first end face. A second connection member is disposed at an upper end of the first connection member to outward horizontally extend from the first end face. A third connection member is disposed at a lower end of the first connection member to outward horizontally extend from the second end face. A passage is formed at the centers of the first and second end faces. The first fan is mated with the first end face of the first connection member and horizontally connected with the second connection member. The second fan is mated with the second end face of the first connection member and horizontally connected with the third connection member.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 7, 2015
    Applicant: Asia Vital Components Co., Ltd.
    Inventor: Wen-Hao Liu
  • Publication number: 20150127188
    Abstract: A contra-rotating fan system includes a fan chassis. A first fan in the fan chassis includes blades that provide airflow in a first direction when the first fan rotates in a second direction, and provide airflow in a third direction opposite the first direction when the first fan rotates in a fourth direction opposite the second direction. A second fan adjacent the first fan in the fan chassis includes the same number of blades as the first fan. The first fan and the second fan rotate at the same time in opposite directions. The blades on the second fan provide airflow in the first direction when the first fan rotates in the second direction and the second fan rotates in the fourth direction, and provides airflow in the third direction when the first fan rotates in the fourth direction and the second fan rotates in the second direction.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 7, 2015
    Inventors: Kevin Warren Mundt, Orin M. Ozias
  • Patent number: 9022724
    Abstract: An anti-vibration serial fan structure includes a first frame having a first assembling side and a second frame having a second assembling for connecting to the first assembling side. The first assembling side is provided with at least one mounting post or mounting hole and at least one male or female connector. The second assembling side is correspondingly provided with at least one mounting hole or mounting post and at least one female or male connector. The male connector has a certain degree of elasticity, so that the engaged male and female connectors provide a vibration-absorbing effect to save additional cushioning elements, enabling the serial fan structure to have lowered assembling cost and minimized defects in assembling.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: May 5, 2015
    Assignee: Asia Vital Components Co., Ltd.
    Inventor: Wen-Hao Liu
  • Patent number: 9010085
    Abstract: A turbofan engine has an engine case and a gaspath through the engine case. A fan has a circumferential array of fan blades. The engine further has a compressor, a combustor, a gas generating turbine, and a low pressure turbine section. A speed reduction mechanism couples the low pressure turbine section to the fan. A bypass area ratio is greater than about 6.0. The low pressure turbine section airfoil count to bypass area ratio ratio is below about 170.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: April 21, 2015
    Assignee: United Technologies Corporation
    Inventors: Paul R. Adams, Shankar S. Magge, Joseph B. Staubach, Wesley K. Lord, Frederick M. Schwarz, Gabriel L. Suciu
  • Patent number: 8985946
    Abstract: A mounting system for mounting a blade to a rotor body includes a pitch control mechanism including an anchor and a pitch change rod extending radially outwardly from the anchor to join to a base of the blade. The anchor and the rod are rotatable about the longitudinal axis of the rod to vary the blade pitch. The pitch control mechanism further includes a torque-transmitting formation between the blade and the anchor such that pitch-varying torque can be transmitted to the blade through the torque-transmitting formation while allowing relative radial movement between the blade and the anchor. The system includes a primary bearing formation, which transmits blade centrifugal loads to the rotor body while accommodating variation of the blade pitch, and secondary bearing formation, which transmits pitch change mechanism centrifugal loads to the rotor body while accommodating rotation of the anchor and the rod during variation of the blade pitch.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: March 24, 2015
    Assignee: Rolls-Royce PLC
    Inventors: Kenneth F. Udall, Alexander V. Lavrenko
  • Patent number: 8985939
    Abstract: A serial fan frame assembly structure includes a first fan frame and a second fan frame. The first fan frame has a first and a second retainer, as well as a first and a second receiving slot; and the second fan frame has a first and a second receiving recess, as well as a first and a second post. The first and second retainer are configured for correspondingly engaging with the first and second recesses, while the first and second posts are configured for correspondingly engaging with the first and second receiving slots, so that the first and the second fan frame can be quickly assembled together in a manner capable of reducing vibration during the operation of a serial fan.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: March 24, 2015
    Assignee: Asia Vital Components Co., Ltd.
    Inventor: Guan-Chen Yin
  • Patent number: 8967966
    Abstract: A hub for a propeller having variable pitch blades for a turbine engine, for example for a propfan turbine engine. The propeller hub includes: a polygonal ring having substantially radial cylindrical housings distributed about a central axis of the ring for receiving the blades; a rotor element for the turbine of the turbine engine; a supporting flange attached to the ring so as to connect the ring to the rotor element; and a plurality of backup retaining members linked to the rotor element, and each of which includes at least one bearing surface opposite an outer surface of the ring with a radial spacing.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: March 3, 2015
    Assignee: SNECMA
    Inventors: Eric Jacques Boston, Michel André Bouru, Laurent Jablonski, Philippe Gérard Edmond Joly
  • Publication number: 20150044021
    Abstract: A turbine system and a method for operating a work machine are provided herein. The turbine system including: a first, a second, and a third turbine, a central gearbox mechanically coupled on the input side to the three turbines and having a mechanical connection on the output side for connecting a work machine, a first fluid line for conveying a working fluid from the first turbine to the second turbine, a second fluid line for conveying the working fluid from the second turbine to the third turbine, a first connecting unit designed such that a first partial mass flow of the working fluid can be removed from the first fluid line or supplied to the first fluid line, and a second connecting unit designed such that a second partial mass flow of the working fluid can be removed from the second fluid line or supplied to the second fluid line.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 12, 2015
    Applicant: Siemens Aktiengesellschaft
    Inventors: Thomas Müller, Volker Neumann, Marc Overath, Matthias Schleer
  • Publication number: 20150037136
    Abstract: A turbine-generator device for use in electricity generation using heat from industrial processes, renewable energy sources and other sources. The generator may be cooled by introducing into the gap between the rotor and stator liquid that is vaporized or atomized prior to introduction, which liquid is condensed from gases exhausted from the turbine. The turbine has a universal design and so may be relatively easily modified for use in connection with generators having a rated power output in the range of 50 KW to 5 MW. Such modifications are achieved, in part, through use of a modular turbine cartridge built up of discrete rotor and stator plates sized for the desired application with turbine brush seals chosen to accommodate radial rotor movements from the supported generator. The cartridge may be installed and removed from the turbine relatively easily for maintenance or rebuilding. The rotor housing is designed to be relatively easily machined to dimensions that meet desired operating parameters.
    Type: Application
    Filed: July 9, 2013
    Publication date: February 5, 2015
    Inventors: Kevin Fairman, Francis A. Di Bella, David Japikse, Frederick E. Becker, Alexander Gofer
  • Publication number: 20150030430
    Abstract: This invention is relates to water turbine power. In particular, the invention relates to a water turbine for generating power in a body of water. There is provided a turbine for operation in a body of water for the generation of power, the turbine comprising: (a) a housing having an inlet for receiving water and an outlet for allowing water to exit; and (b) a power generation unit disposed in the housing and intermediate the inlet and outlet, the power generation unit comprising two propellers for rotation about an axis in response to water flow, wherein the inlet comprises a flared outer end for channelling the water towards the power generation unit, and a truncated cone disposed within the flared outer end of the inlet, the flared portion of the truncated cone protrudes the inlet.
    Type: Application
    Filed: December 12, 2011
    Publication date: January 29, 2015
    Applicant: ENGTEK PTE LTD
    Inventors: Chee Wah Hon, Bert De Wijs
  • Publication number: 20150010382
    Abstract: Turbine airflow is modulated to improve performance during part load operation in a turbomachine. The turbomachine includes a compressor, a turbine with a plurality of stages, and a diffuser. Modulating the airflow includes extracting airflow from an upstream component of the turbomachine, admitting the extracted airflow into a rear stage of the plurality of stages. Admitting airflow into the rear stage serves to increase rear stage loading and alter an energy distribution in the rear stage during part load operation.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 8, 2015
    Inventors: Moorthi Subramaniyan, Joshy John
  • Publication number: 20140371919
    Abstract: A centrifugal compressor for compressing a refrigerant vapour in a refrigeration cycle. The compressor comprises an impeller drive shaft (28) supported by first and second radial bearings (32) for rotation within the compressor housing and an impeller assembly including at least one centrifugal impeller wheel mounted on the impeller drive shaft to rotate with the impeller drive shaft. The first and second radial bearings are hydrodynamic fluid bearings in which the bearing fluid is the refrigerant vapour. The compressor further comprising a conduit (36) for supplying a portion of the refrigerant vapour from the impeller assembly to the first and second fluid bearings.
    Type: Application
    Filed: December 20, 2012
    Publication date: December 18, 2014
    Inventor: Michael Creamer
  • Patent number: 8876461
    Abstract: A series fan assembling structure includes a first main body and a second main body. A first reception recess, a first engagement body, a first reception section and a second reception section are respectively disposed in four corners of one end of the first main body. A second reception recess, a second engagement body, a first raised body and a second raised body are respectively disposed in four corners of one end of the second main body. The first and second engagement bodies and the first and second raised bodies are respectively correspondingly latched and engaged with the first and second reception recesses and the first and second reception sections, whereby the series fan can be quickly assembled and the shake can be minimized.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: November 4, 2014
    Assignee: Asia Vital Components Co., Ltd.
    Inventor: Guan-Chen Yin
  • Publication number: 20140321975
    Abstract: The invention relates to a wind power station (1) for energy generation with an axial-flow, rotating, vortex-generating wind concentrator (2) pivot-mounted on a shaft (3), covered by a ring-shaped outer jacket (4) which on its outside features flow channels distributed over 360° and which is equipped concentrator blades (7) in a circular arrangement between the shaft (3) and the ring-shaped outer jacket (4). To create favourable conditions, it is proposed to include sawtooth-shaped, curved edge-vortex-generating guide profiles (5) producing a downstream vortex coil across the entire cross-section of the ring-shaped outer jacket (4).
    Type: Application
    Filed: November 16, 2012
    Publication date: October 30, 2014
    Inventor: Gudrun WIESER
  • Patent number: 8850793
    Abstract: A turbofan engine is disclosed and includes a fan and a compressor in communication with the fan section, a combustor, a turbine and a speed reduction mechanism coupled to the fan and rotatable by the turbine. The turbine includes a first turbine section that includes three or more stages and a second turbine section that includes at least two stages. A ratio of airfoils in the first turbine section to a bypass area is less than about 170.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: October 7, 2014
    Assignee: United Technologies Corporation
    Inventors: Paul R. Adams, Shankar S. Magge, Joseph B. Staubach, Wesley K. Lord, Frederick M. Schwarz
  • Patent number: 8844265
    Abstract: A turbofan engine has an engine case and a gaspath through the engine case. A fan has a circumferential array of fan blades. The engine further has a compressor, a combustor, a gas generating turbine, and a low pressure turbine section. A speed reduction mechanism couples the low pressure turbine section to the fan. A bypass area ratio is greater than about 6.0. The low pressure turbine section airfoil count to bypass area ratio is below about 170.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: September 30, 2014
    Assignee: United Technologies Corporation
    Inventors: Paul R. Adams, Shankar S. Magge, Joseph B. Staubach, Wesley K. Lord, Frederick M. Schwarz, Gabriel L. Suciu
  • Publication number: 20140271125
    Abstract: A steam turbine 10 of an embodiment includes a turbine rotor 30, rotor blade cascades 41 having rotor blades 40, stationary blade cascades 53 having stationary blades 52, and a steam passage 60 formed on a turbine stage, among turbine stages, including the rotor blades each having a blade height equal to or more than a blade height at which a loss generated when a leakage steam flown between a diaphragm inner ring 51 and the turbine rotor 30 jets into a main steam and a benefit brought by increasing the blade height of each of the rotor blades 40 in accordance with an increase in a flow rate of the main steam by an amount of the leakage steam are cancelled, and leading the leakage steam from an upstream side to a downstream side of a rotor disk 31.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 18, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Daisuke Nomura, Akihiro Onoda, Junichi Tominaga, Shinichiro Ohashi
  • Publication number: 20140271107
    Abstract: Systems and methods for preventing diffusers in pumps such as electric submersible pumps from bursting or collapsing in over-pressure and/or under-pressure conditions, where one or more diffusers in the pump includes check valves in the exterior diffuser wall. The check valves remain closed when a pressure differential between the diffuser interior and exterior is within a predetermined range, but open when the pressure differential between the diffuser interior and the interstitial space is outside the predetermined range to relieve overpressure and underpressure conditions. When the pressure differential returns to an acceptable range, the check valves close, preventing recirculation of fluid between the diffusers of the different stages. O-rings or other types of seals may be installed between each stage and the pump housing to provide some isolation of the external pressure on the diffuser of each stage.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: Baker Hughes Incorporated
    Inventors: Ryan P. Semple, Josh S. Ledbetter, peter F. Lawson
  • Publication number: 20140255154
    Abstract: A reaction-type turbine according to the present invention is configured in that a portion of a rotary shaft module which penetrates through a side with an inlet portion of a housing has a diameter larger than the diameters of other portions. Thus, the pressurized area in which a working fluid applies pressure to a rotary shaft in the direction opposite to the working fluid flow direction increases, thus increasing force in the direction opposite to the working fluid flow direction. As a result, axial direction force applied to the rotary shaft in the working fluid flow direction may be reduced. Therefore, the reaction-type turbine of the present invention has the advantages of eliminating the necessity of installing a separate thrust bearing for supporting axial force in the working fluid flow direction.
    Type: Application
    Filed: October 12, 2012
    Publication date: September 11, 2014
    Applicant: HK TURBINE CO., LTD.
    Inventors: Young Il Chang, Ki Tae Kim, Yong Sik Hah, Jung Hoon Kim
  • Publication number: 20140241856
    Abstract: Gas turbine engine systems involving tip fans are provided. In this regard, a representative gas turbine engine system includes: a multi-stage fan having a first rotatable set of blades and a second counter-rotatable set of blades, the second rotatable set of blades defining an inner fan and a tip fan and being located downstream of the first set of rotatable blades; and an epicyclic differential gear assembly operative to receive a torque input and differentially apply the torque input to the first set of blades and the second set of blades.
    Type: Application
    Filed: February 26, 2013
    Publication date: August 28, 2014
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Gary D. Roberge, Gabriel L. Suciu
  • Patent number: 8814505
    Abstract: A mechanical arrangement for an engine having two propeller stages, including: a first epicyclic gear stage including a sun gear, a planet gear, a planet carrier and an annulus, wherein the sun gear is driven by a shaft of the engine, the planet carrier is stationary and thereby permits static structure to be located there through, and the annulus outputs torque and/or drive; a second epicyclic gear stage including a second sun gear, a second planet gear, a second planet carrier and a second annulus, wherein the second sun gear is driven by the annulus of the first epicyclic gear stage and is annular to accommodate the static structure, the second planet carrier includes the output to one of the propeller stages and the second annulus includes the output to the other of the propeller stages; wherein the static structure provides mounting for static components on one or both sides of each epicyclic gear stage.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: August 26, 2014
    Assignee: Rolls-Royce PLC
    Inventor: Mark J. E. Bellis
  • Patent number: 8807919
    Abstract: A counter-rotating axial flow fan with reduced noise at the target operating point achieved without modifying a front impeller, a rear impeller, or a middle stationary portion is provided. An annular rib including a projecting surface for generating turbulent flow is formed on an inner wall portion of a casing at a position off from the middle stationary portion to a side of the rear impeller, the projecting surface extending radially inwardly of the inner wall portion and extending continuously in the circumferential direction of the inner wall portion. A fluid striking the projecting surface for generating turbulent flow is partially disturbed to form a turbulent flow before entering an area in which the rear impeller is provided. The turbulent flow suppresses flow separation of a fluid flowing along the surfaces of rear blades of the rear impeller from the surfaces of the rear blades.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: August 19, 2014
    Assignees: The University of Tokyo, Fujitsu Limited, Sanyo Denki Co., Ltd.
    Inventors: Chisachi Kato, Atsushi Yamaguchi, Akira Ueda, Kazuhiro Nitta, Akihiro Otsuka, Sr., Tadashi Katsui, Masahiro Suzuki, Yoshihiko Aizawa, Honami Oosawa
  • Publication number: 20140227078
    Abstract: A mid-turbine frame for a gas turbine engine includes a vane assembly supported within a case. The vane assembly directs airflow between a first turbine and a second turbine. A support rod extends through the vane assembly and is secured to the case by a retaining nut. The retaining nut extends through a guide attached to the vane assembly for aligning the vane assembly relative to the case portion.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 14, 2014
    Applicant: United Technologies Corporation
    Inventor: Jaisukhlal V. Chokshi
  • Patent number: 8777554
    Abstract: A fan system is disclosed having a forward fan stage configured to pressurize an airflow and an aft fan stage having a tip-fan configured to pressurize a first portion of a pressurized air flow from the forward fan stage wherein the aft fan stage is driven by a second portion of the pressurized airflow.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: July 15, 2014
    Assignee: General Electric Company
    Inventor: John Lewis Baughman
  • Patent number: 8764375
    Abstract: A counter-rotating axial flow fan with improved characteristics and reduced noise compared to the related art can be provided. Defining the number of front blades as N, the number of stationary blades as M, and the number of rear blades as P, and defining the maximum axial chord length of the front blades as Lf, the maximum axial chord length of the rear blades as Lr, the outside diameter of the front blades as Rf, and the outside diameter of the rear blades as Rr, the counter-rotating axial flow fan satisfies the following two relationships: N?P>M; and Lf/(Rf×?/N)?1.25 and/or Lr/(Rr×?/P)?0.83.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: July 1, 2014
    Assignees: The University of Tokyo, Fujitsu Limited, Sanyo Denki Co., Ltd.
    Inventors: Chisachi Kato, Atsushi Yamaguchi, Akira Ueda, Kazuhiro Nitta, Akihiro Otsuka, Tadashi Katsui, Masahiro Suzuki, Yoshihiko Aizawa, Honami Oosawa
  • Publication number: 20140147243
    Abstract: A counter-rotating wet gas compressor for deployment and operation on the sea floor is described. The compressor has alternating rows of impellers, with each successive row of impellers being mounted a central hub or to an outer sleeve. According to some embodiments, no static diffusers are positioned between the alternating counter-rotating rows of impellers such that the design is structurally robust, compact and capable of compressing fluids that contain significant portions of liquid phase.
    Type: Application
    Filed: November 28, 2012
    Publication date: May 29, 2014
    Applicant: FRAMO ENGINEERING AS
    Inventors: Bernt Helge Torkildsen, Per Gunnar Vikre, Hans Frederik Kjellnes
  • Publication number: 20140147249
    Abstract: An assembly for a gas turbine engine includes a rotor formed by a drum and a hub. The drum has a generally conically shaped inner surface that defines a flow path along a first cavity. The hub is connected to the drum and has a conically shaped inner surface that defines a flow path along a second cavity.
    Type: Application
    Filed: October 24, 2012
    Publication date: May 29, 2014
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventor: UNITED TECHNOLOGIES CORPORATION
  • Publication number: 20140126994
    Abstract: This radial gas expander is provided with a rotating shaft, an impeller which is fixed to the rotating shaft, and a casing by which the rotating shaft is supported in a rotatable manner and in which an introduction channel introducing fluid to the impeller is formed. The introduction channel includes a nozzle blade which guides fluid flowing into the impeller and a support member which is provided in the upstream side of the nozzle blade and which supports wall surfaces of the introduction channel, wherein the wall surfaces are mutually opposed, and the support member has a wing shape in a cross-sectional view.
    Type: Application
    Filed: January 6, 2012
    Publication date: May 8, 2014
    Inventors: Hiroki Ishikawa, Hideki Nagao
  • Publication number: 20140119885
    Abstract: A turbine engine assembly is provided. The turbine engine assembly includes a core gas turbine engine including a first rotatable drive shaft, a first low-pressure turbine section in serial flow communication with the gas turbine engine, a gear assembly coupled to the first low-pressure turbine section through a second rotatable drive shaft, and a second low-pressure turbine section in serial flow communication with the core gas turbine engine. The first low-pressure turbine section is configured to rotate in a first rotational direction, and the second low-pressure turbine section is configured to rotate in a second rotational direction opposite the first rotational direction. The first and second low-pressure turbine sections are spaced axially apart from each other. The turbine engine assembly also includes a fan assembly coupled to the first low-pressure turbine section through the gear assembly, and coupled to the second low-pressure turbine section through a third rotatable drive shaft.
    Type: Application
    Filed: January 7, 2014
    Publication date: May 1, 2014
    Applicant: General Electric Company
    Inventors: Robert Joseph Orlando, Thomas Ory Moniz, Alan Roy Stuart
  • Publication number: 20140112756
    Abstract: A turboshaft engine including a low-pressure compressor, a high-pressure compressor, a low-pressure turbine, a high-pressure turbine, and a regulator for regulating a speed of rotation of the low-pressure turbine to a speed that is substantially constant. The low-pressure turbine is coupled by a first shaft to the high-pressure compressor, while the high-pressure turbine is coupled by a second shaft to the low-pressure compressor.
    Type: Application
    Filed: June 7, 2012
    Publication date: April 24, 2014
    Applicant: TURBOMECA
    Inventor: Remy Princivalle
  • Publication number: 20140105721
    Abstract: A multi-stage duct system adaptable to generate maximum power from a wind turbine is presented. The multi-stage duct system comprises a plurality of wind turbine units. Each of the plurality of wind turbine units includes a plurality of turbine rings and a plurality of airfoils. The plurality of turbine rings defines to form a plurality of expanding stages and a plurality of contracting stages positioned in-line with a fluid flow direction. The multi-stage duct system further comprises a duct analysis unit having a plurality of axisymmetric ducts. The duct analysis unit utilizes a fluid dynamics mechanism to provide an optimal airfoil arrangement to the plurality of airfoils. The optimal airfoil arrangement optimizes a plurality of airfoil parameters associated with each of the plurality of airfoils thereby providing an efficient diffusion and an optimal fluid mass flow rate through the plurality of airfoils.
    Type: Application
    Filed: October 17, 2013
    Publication date: April 17, 2014
    Inventor: Dan Koko
  • Patent number: 8668433
    Abstract: A wind generating device employs modules each having two turbines. Each of the turbines employs two rotors coaxially aligned by a shaft associated with an in-line generator. Alternatively, the turbine employs only one rotor for low wind areas. The arrangement includes a proximal channel with a leading portion having decreasing radius toward the first rotor which acts as a collector and a following portion connecting fluidly the first and second rotor and a distal channel which is separate from the proximal channel and opens into the following portion thereby adding to the airflow to the second rotor. Downstream from the second rotor is a diffuser with a radius increasing with distance from the rotor. The modules may be stacked vertically stacked which allows for yaw responsive to wind. The modules may be mounted on a tower.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: March 11, 2014
    Inventors: Kevin L. Friesth, Franklin Joseph Desrochers
  • Patent number: 8667773
    Abstract: A turbomachine comprises a flow duct with coaxially arranged radially inner and outer endwalls, first and second sets of axially spaced rotor stages arranged between the inner and outer endwalls, and a plurality of variable endwall segments arranged along the inner endwall. The first set of rotor stages rotates in a first direction, and the second set rotates in a second direction. The first and second sets alternate in axial series along the flow duct, such that axially adjacent rotor stages rotate in different directions. The variable endwall segments are radially positionable, in order to regulate loading on the first and second sets of rotor stages by changing a cross-sectional flow area between the inner and outer endwalls.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: March 11, 2014
    Assignee: United Technologies Corporation
    Inventor: Peter D. Silkowski
  • Publication number: 20140056688
    Abstract: There is disclosed an inline axial flow fan including at least first and second axial flow fans and arranged in an inline manner along an axial direction of a rotational shaft of a rotational driving apparatus. A first flow control grid is arranged in a gas discharge side of the first axial flow fan, and a second flow control grid is arranged in a gas discharge side of the second axial flow fan. The first flow control grid has a stator blade having a smooth circular arc leading edge shape matching a circular arc shape of the stator blade of the first axial flow fan and a trailing edge shape extending in parallel with a gas flow direction. The second flow control grid has a stator blade having a smooth circular arc shape matching a circular arc shape of the stator blade of the second axial flow fan.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 27, 2014
    Applicant: SANYO DENKI CO., LTD.
    Inventors: Jun Chieh Yen, Honami Oosawa
  • Publication number: 20140050563
    Abstract: A stacked wheel assembly for a turbine system includes a plurality of wheels. A stud includes a forward end having a circumferential surface with at least one relatively planar portion and a first groove extending circumferentially around at least a portion of the circumferential surface. A first nut is disposed proximate a forward face of one of the plurality of wheels to receive the forward end of the stud. A resilient arcuate member is configured to fittingly reside within the first groove. A lock plate having at least one slotted region is disposed proximate an outer surface of the lock plate to fittingly engage at least one lug disposed on a forward region of the first nut for rotationally retaining the stud and a second groove is disposed within an inner surface of the lock plate to receive the resilient arcuate member for axially retaining the lock plate.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 20, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Anil Mishra, Meelan Ravindra Nanivadekar
  • Publication number: 20140017065
    Abstract: A rotor apparatus for extracting energy from bidirectional fluid flows comprises a first rotor (7) mounted for rotation about an axis of rotation (4) in a first direction of rotation, the first rotor (7) having at least one helical blade (2) with a pitch that decreases in a direction along the axis of rotation (4); and a second rotor (8) mounted for rotation about the same axis of rotation (4) in an opposite direction of rotation and having at least one helical blade (2) with a pitch that increases in the same direction along the axis of rotation (4), wherein fluid exiting the first rotor (7) is passed to the second rotor (8).
    Type: Application
    Filed: January 20, 2012
    Publication date: January 16, 2014
    Applicant: SEA-LIX AS
    Inventors: Jason Dale, Aage Bjørn Andersen
  • Publication number: 20130343871
    Abstract: A series fan assembly structure includes a first fan frame and a second fan frame. The first fan frame has a first latch section, a second latch section, a first engagement recess, a second engagement recess, a first retainer section and a second retainer section. The second fan frame has a third latch section, a fourth latch section, a third engagement recess, a fourth engagement recess, a third retainer section and a fourth retainer section. The first and second engagement recesses are respectively connected with the third and fourth latch sections, the first and second latch sections are respectively connected with the third and fourth engagement recesses and the first and second retainer sections are respectively connected with the third and fourth retainer sections. Accordingly, the first and second fan frames can be quickly assembled and securely connected in both axial direction and radial direction.
    Type: Application
    Filed: June 22, 2012
    Publication date: December 26, 2013
    Inventors: Sung-Wei Sun, Zuo Zhi, Xiang-Ping Zhang
  • Publication number: 20130287545
    Abstract: A gas turbine engine has a fan rotor, a first compressor rotor and a second compressor rotor. The second compressor rotor compresses air to a higher pressure than the first compressor rotor. A first turbine rotor drives the second compressor rotor and a second turbine rotor. The second turbine drives the compressor rotor. A fan drive turbine is positioned downstream of the second turbine rotor. The fan drive turbine drives the fan through a gear reduction. The first compressor rotor and second turbine rotor rotate as an intermediate speed spool. The second compressor rotor and first turbine rotor together as a high speed spool. The high speed spool and the fan drive turbine configured to rotate in the same first direction. The intermediate speed spool rotates in an opposed, second direction.
    Type: Application
    Filed: April 25, 2012
    Publication date: October 31, 2013
    Inventors: Gabriel L. Suciu, Frederick M. Schwarz
  • Patent number: 8562284
    Abstract: A propulsive fan system comprises a fan unit comprising a first stage array of rotatable blades upstream of a second stage array of rotatable blades. The first stage is coupled to a first drive means. The second stage is coupled to a second drive means. The first drive means is independently operable of the second drive means during operation of the fan system.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: October 22, 2013
    Assignee: Rolls-Royce PLC
    Inventor: Stephen J. Bradbrook
  • Publication number: 20130259644
    Abstract: A multi-stage impeller is configured in a multi-stage centrifugal compressor by fixing and attaching a plurality of centrifugal impellers to one rotating shaft. Diffusers and return channels are provided in order downstream from each impeller. The centrifugal impellers, the diffusers and the return channel are housed within a compressor casing. The return channels have a plurality of vanes positioned at intervals from one another in a circumferential direction, and at least two stages are provided. The vane exit angles monotonically increase toward the downstream stage.
    Type: Application
    Filed: October 17, 2011
    Publication date: October 3, 2013
    Inventors: Hiromi Kobayashi, Hideo Nishida, Kazuyuki Sugimura, Manabu Yagi
  • Publication number: 20130259643
    Abstract: A gas turbine engine has a fan rotor, a first compressor rotor and a second compressor rotor. The second compressor rotor compresses air to a higher pressure than the first compressor rotor. A first turbine rotor drives the second compressor rotor and a second turbine rotor. The second turbine drives the compressor rotor. A fan drive turbine is positioned downstream of the second turbine rotor. The fan drive turbine drives the fan through a gear reduction. The first compressor rotor and second turbine rotor rotate as an intermediate speed spool. The second compressor rotor and first turbine rotor together as a high speed spool, with the high speed spool rotating in an opposed direction to the intermediate speed spool. The fan drive turbine rotates in the same direction as the intermediate speed spool.
    Type: Application
    Filed: April 2, 2012
    Publication date: October 3, 2013
    Inventors: Frederick M. Schwarz, Daniel Bernard Kupratis
  • Patent number: 8545171
    Abstract: A rotor of a thermal fluid flow machine, especially a gas turbine, is provided. The rotor includes a plurality of rotor components that are held together by a common tie-bolt that extends through the center of the rotor components. The tie-bolt is fixed in at least one of the rotor components using at least one star spring that surrounds the tie-bolt in a circumferential direction.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: October 1, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Francois Benkler, Ulrich Ehehalt, Harald Hoell, Uwe Kahlstorf, Karsten Kolk, Walter Loch, Peter-Andreas Schneider