With Bimetallic Blade, Vane, Or Adjustment Means Therefor Patents (Class 415/12)
  • Patent number: 10563936
    Abstract: A valve and a heat exchanger apparatus for a gas turbine engine include a valve body having a valve seat and an actuation component including a plate formed from a set of metal layers and responsive to a change in at least one of a thermal condition and a pressure exerted thereon such that the plate moves and the valve moves between an opened and a closed position where a portion of the plate engages with the valve seat.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: February 18, 2020
    Assignee: UNISON INDUSTRIES, LLC
    Inventors: Gordon Tajiri, Michael Thomas Kenworthy, Yanzhe Yang, Dattu GV Jonnalagadda
  • Patent number: 10533558
    Abstract: A centrifugal pump with adaptive pump stages includes an impeller configured to provide kinetic energy to fluid flow through the pump. The impeller has multiple geometric dimensions. The pump includes a diffuser connected to the impeller that is configured to convert the kinetic energy provided by the impeller into static pressure energy to flow the fluid through the pump. The pump includes an adaptive material attached to the impeller that is configured to modify, during operation of the pump, a geometric dimension to modify fluid flow through the pump.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: January 14, 2020
    Assignee: Saudi Arabian Oil Company
    Inventors: Rafael Adolfo Lastra Melo, Chidirim Enoch Ejim
  • Patent number: 10502071
    Abstract: An airfoil for a gas turbine having an outer shell with an inner volume and an inner shell arranged within the inner volume of the outer shell, wherein the inner shell has an aerodynamic profile having an inner nose section and an inner tail section. A first cooling channel and a second cooling channel merge into a common cooling channel at an inner tail section. A first tail fin is arranged between the first cooling channel and the common cooling channel such that a first mass flow rate of the cooling fluid flowing through the first cooling channel is controllable. A second tail fin is arranged between the second cooling channel and the common cooling channel such that a second mass flow rate of the cooling fluid flowing through the second cooling channel is controllable.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: December 10, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Anthony Davis, Jonathan Mugglestone
  • Patent number: 10487837
    Abstract: In an aspect, there is provided a pump impeller assembly that includes a first impeller portion arranged to drive a fluid through a fluid conduit, a second impeller portion movable between a more-rotationally engaged position in which the second impeller portion has a first amount of rotational engagement with the first impeller portion, and a less-rotationally engaged position in which the second impeller portion has a second amount of rotational engagement with the first impeller portion that is less than the first amount of rotational engagement, and an actuator operatively connected to the second impeller portion and configured to drive movement of the second impeller portion between the more-rotationally engaged position and the less-rotationally engaged position based on a fluid property.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: November 26, 2019
    Assignee: Litens Automotive Partnership
    Inventors: Roman Tracz, Jacek Stepniak, Ivan Ferlik, Leonid Katsman
  • Patent number: 10259588
    Abstract: A shroud for a J-tube of an air conditioning pack of an aircraft includes a first partial shroud piece and a second partial shroud piece that mate together to form a flow tube and a sleeve. The flow tube includes an inlet, an outlet fluidly connected to the inlet and disposed on an opposite end of the flow tube from the inlet, and a sidewall extending between the inlet and the outlet. The sleeve extends through a portion of the flow tube and out of the sidewall and is configured to contain a portion of the J-tube.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: April 16, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Donald E. Army, Christopher McAuliffe
  • Patent number: 10196898
    Abstract: A turbine engine airfoil apparatus, including an airfoil defined by a plurality of airfoil sections arrayed along a stacking axis that extends between a root and a tip, wherein at least two of the airfoil sections spaced apart from each other have differing airfoil section thermal expansion properties.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: February 5, 2019
    Assignee: General Electric Company
    Inventors: Nicholas Joseph Kray, Narendra Digamber Joshi, Samar Jyoti Kalita, Paul Gerard Marsland, Wayne Allen Spence
  • Patent number: 10113441
    Abstract: A thermally driven spring valve for turbine gas path parts is disclosed herein. A thermally driven spring valve includes a bimetallic sheet comprising a base, a first finger portion extending from the base and a second finger portion extending from the base, the first finger portion having a first curvature vector and the second finger portion have a second curvature vector, wherein an exterior surface extends from the base through the first finger portion and the second finger portion and an interior surface extends from the base through the first finger portion and the second finger portion, wherein the exterior surface of the first finger portion is disposed proximate the interior surface of the base wherein the exterior surface of the second finger portion is disposed proximate the interior surface of the base. A thermally driven spring valve may include perforations through a finger portion.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: October 30, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Tracy A. Propheter-Hinckley, Lane M. Thornton
  • Patent number: 9771943
    Abstract: A regulating rod (1) has a rod part (2) which has an end region (3) provided with an external thread and an end piece (4) which has a receiving recess (5). A knurled nut (6) is arranged and guided in the receiving recess (5) and has an internal thread into which the external thread of the externally threaded end region (3) is screwed. The end piece (4) further has a weld window (8) adjacent the knurled nut. Once the length of the regulating rod is adjusted by rotation of the knurled nut, further rotation of the knurled nut is prevented by introducing and filling the weld window with a weld filler such that the knurled nut (6) is non-detachably fixed and thereby the set length of the regulating rod is fixed.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: September 26, 2017
    Assignee: BorgWarner Inc.
    Inventors: Dirk Burkhard, Leif Heidingsfelder
  • Patent number: 9752442
    Abstract: An airfoil includes an airfoil body having a first section and a second section that differ in coefficient of thermal expansion by at least 10% and that each have a through-thickness that is 20% or greater than a through-thickness of the airfoil body. The second section is arranged in thermomechanical juxtaposition with the first section such that the first section and the second section cooperatively thermomechanically control a profile of the airfoil body responsive to varying thermal conditions.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: September 5, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Richard K. Hayford, Paul M. Lutjen
  • Patent number: 9267382
    Abstract: A rotating machine cooled by a cooling medium directed through the rotating machine in a main flow and a secondary flow includes a rotor. A stator includes a swirl passage configured to guide the secondary flow so as to be discharged from a pre-swirl nozzle. At least one control device includes a shape-memory alloy disposed in an area of the pre-swirl nozzle and is configured to control the secondary flow based on a temperature in an automated manner.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: February 23, 2016
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Jaroslaw Leszek Szwedowicz, Alexey Mozharov, Stefan Irmisch
  • Publication number: 20150050122
    Abstract: An adjustable and lockable turnbuckle is disclosed herein. The turnbuckle may include an elongated body having internal threading within a first end thereof. The turnbuckle may include a first extension rod having external threading configured to mate with the internal threading at the first end of the elongated body. The turnbuckle may include a first jam nut having internal threading and a skirt. The internal threading of the first jam nut may be configured to mate with the external threading of the first extension rod to tighten the first jam nut against the first end of the elongated body so that the skirt of the first jam nut is positionable about the first end of the elongated body. A first aperture may extend through the elongated body, the first extension rod, and the skirt of the first jam nut. Moreover, a first pin may be positioned within the first aperture.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 19, 2015
    Applicant: General Electric Company
    Inventors: Michael James Gutta, Mark Joseph Pombles, Harry McFarland Jarrett, JR.
  • Patent number: 8882442
    Abstract: A component for a gas turbine, especially a blisk or a bling, whereby the component includes a rotor base (12) made of a high temperature-resistant nickel alloy and a plurality of turbine blades (14) joined to the rotor base, whereby each turbine blade includes a rotor blade (16) made of a titanium alloy and a blade root. The blade root is configured as an adapter element (18) that is made of a material that can be welded to the titanium alloy as well as to the high temperature-resistant nickel alloy and that is integrally joined to the rotor base (12) and to the rotor blade (16) fusion. A method for the production of the component is also described.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: November 11, 2014
    Assignee: MTU Aero Engines GmbH
    Inventors: Wilfried Smarsly, Joachim Bamberg, Joerg Esslinger
  • Publication number: 20140248120
    Abstract: An improved seal assembly for use with a combustion liner assembly is employed with a gas turbine engine so as to control fluid flow. The seal assembly has a bi-metal sealing member that is affixed to a first surface that is proximal to a second perpendicular surface that is not in contact with the first surface, thus providing a potential fluid flow path. Upon heating, the bi-metal sealing member “uncoils” contacting the second perpendicular surface, thus blocking the flowpath between the two surfaces. Various metals may be provided to provide predetermined sealing characteristics.
    Type: Application
    Filed: December 20, 2013
    Publication date: September 4, 2014
    Applicant: Rolls-Royce Corporation
    Inventor: Charles Bryce Graves
  • Publication number: 20140212263
    Abstract: An airfoil includes an airfoil body having a first section and a second section that differ by coefficient of thermal expansion. The second section is arranged in thermomechanical juxtaposition with the first section such that the first section and the second section cooperatively thermomechanically control a profile of the airfoil body responsive to varying thermal conditions.
    Type: Application
    Filed: December 27, 2012
    Publication date: July 31, 2014
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Richard K. Hayford, Paul M. Lutjen
  • Patent number: 8657561
    Abstract: A rotor blade comprising a core blade section; and a trailing edge section, the trailing edge section being attached to the core blade section along a join interface. The trailing edge section comprises a shape memory material which is actuable so as to cause selective deformation of the trailing edge section between a first condition in which a trailing edge of the trailing edge section follows a substantially smooth profile and a second condition in which the trailing edge is perturbed. The direction of the perturbation may be oblique or perpendicular to the direction of flow over the blade in use. The rotor blade may be a fan or propeller for a gas turbine engine.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: February 25, 2014
    Assignee: Rolls-Royce PLC
    Inventors: Cosimo Buffone, John R Webster, Ian C D Care
  • Publication number: 20130243572
    Abstract: An exhaust-gas turbocharger (1) having a compressor (2); a turbine (3) which has a turbine housing (4); a bearing housing (5) which has a compressor-side flange and a turbine-side flange (6); a VTG cartridge (7) which has an adjusting ring (8); and an adjusting shaft (9) which is guided through the turbine-side flange (6) of the bearing housing (5), which has an inner lever (10) which engages into the adjusting ring (8) of the VTG cartridge (7), and which has an outer lever (11, 11?, 11?, 11??) which is connected to an actuating element (12) of an actuator (13), wherein the outer lever (11, 11?, 11?, 11??) has an open rounded fastening receptacle (14) into which an associated shaft portion (15) of the adjusting shaft (9) engages.
    Type: Application
    Filed: November 23, 2011
    Publication date: September 19, 2013
    Applicant: BORGWARNER INC.
    Inventors: Leif Heidingsfelder, Thomas Ramb, Ralf Christmann, Nermin Osmanovic
  • Publication number: 20130223982
    Abstract: A thermal expansion joint suited for metal sheet component assemblies and method of connection is described. The expansion joint connection is formed by overlapping edge portions of components which are subject to different temperatures. Slot apertures are formed in the edge portion of a first component at predetermined locations and hole apertures are formed in the edge portion of the second component and disposed for confronting alignment with the slot apertures. A connecting sleeve is disposed in each hole aperture and projects through the hole and associated slot and a retention washer is secured over an end of the connecting sleeve on the other side of the second component. A fastener extends through the retention washer and the connecting sleeve to clampingly interconnect the overlapped edge portions of the first and second components.
    Type: Application
    Filed: February 24, 2012
    Publication date: August 29, 2013
    Inventors: Eric DUROCHER, Guy LEFEBVRE
  • Publication number: 20130101391
    Abstract: A self-adjusting device (25) for controlling the clearance (C), especially in the radial direction, between rotating and stationary components (21, 23) of a thermally loaded turbo machine, changes clearance (C) in a linear and/or non-linear way during transition of the machine between standstill and steady-state operation. Simple and effective control can be achieved, even in the case of a nonlinear variation of the clearance during transitional operation, by the self-adjusting device (25) including at least two different driving elements (A, B) to move the rotating and fixed components (21, 23) relative to each other in order to change the clearance (C) between them, and by the different driving elements (A, B) being configured to be activated at different times during the transition of the machine.
    Type: Application
    Filed: September 17, 2012
    Publication date: April 25, 2013
    Applicant: ALSTOM Technology Ltd.
    Inventor: ALSTOM Technology Ltd.
  • Patent number: 8303242
    Abstract: A hydropower generating turbine having an impeller housing disposed to receive water, at least one impeller disposed within the impeller housing, at least one adjustable duct pivotally connected to the impeller housing, and, where the duct has a plurality of duct leafs, wherein the duct leafs articulate and cause the duct to converge and diverge for selectively disposing a fluid about the impeller. The ducts may be inflow or outflow ducts, and the turbine may react to a change in the fluid and alter the shape of the impeller. Further, the turbine may have an automated controller where variable change in the flow is detected by a sensor and transmitted to the automated controller to cause a directional shift in the multidirectional turbine.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: November 6, 2012
    Assignee: Hydro Green Energy, LLC
    Inventors: Wayne F. Krouse, Frederick E. Becker, Andrew R. Provo
  • Patent number: 8257021
    Abstract: A gas-turbine engine includes stator vanes (1) angularly variable about their longitudinal axes by actuating elements in order to control airflow supplied to downstream rotor blades (6). The actuating elements are arranged in the most confined downstream stages of the compressors and/or turbines, with these stages being exposed to high temperatures, so that stable and efficient operation is ensured. The actuating elements (8) fixed to the inner or the outer casing (4, 12) are made of a material expanding, contracting or deforming in dependence of the temperature and transmit the respective deformation to the swivellably borne stator vanes (1).
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: September 4, 2012
    Assignee: Rolls Royce Deutschland Ltd Co KG
    Inventor: Stuart Lee
  • Patent number: 8235661
    Abstract: The present invention provides a turbine blade that is exposed to a high temperature atmosphere at relatively high temperatures and to a low temperature atmosphere at relatively low temperatures, including: a concave-curve-like pressure surface that is concaved along a flow direction of fluid; a convex-curve-like suction surface that is convexed along the flow direction of the fluid; and a concave and convex formation device which causes a concave and convex portion along the flow of the fluid to appear on the suction surface when the turbine blade is exposed to the low temperature atmosphere, and which turns the suction surface into a smooth surface along a convex curve surface of the suction surface when the turbine blade is exposed to the high temperature atmosphere.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: August 7, 2012
    Assignee: IHI Corporation
    Inventors: Akira Takahashi, Mizuho Aotsuka, Hiroshi Hamazaki, Haruyuki Tanimitsu
  • Patent number: 8136999
    Abstract: A support for a bearing that guides a shaft in a turbomachine is disclosed. The support includes an annular part made of a shape memory material which retains an initial shape when the load applied to it remains below a threshold value and which deforms, absorbing energy when the applied load becomes at least equal to the threshold value. The annular part is capable of reverting at least approximately to its initial shape when the applied load drops back below the threshold value.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: March 20, 2012
    Assignee: SNECMA
    Inventors: Claude Marcel Mons, Laurent Raberin, Jean-Marc Rongvaux, Stephane Rousselin
  • Patent number: 8087875
    Abstract: A multidirectional hydrokinetic power generating turbine has an impeller housing with one or more impellers disposed within the impeller housing, one or more adjustable ducts pivotally connected to the impeller housing, and a plurality of duct leafs disposed about the one or more ducts. The plurality of duct leafs articulate and cause the one or more adjustable ducts to converge and diverge to selectively disposing a fluid about the one or more impellers.
    Type: Grant
    Filed: September 27, 2008
    Date of Patent: January 3, 2012
    Inventor: Wayne F. Krouse
  • Patent number: 8083465
    Abstract: A method of repairing a turbine exhaust case strut heat shield vane includes removing a damaged portion of the vane, solution heat treating the vane, attaching a replacement section to the vane, and relieving local stresses in an attachment area between the replacement section and the vane.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: December 27, 2011
    Assignee: United Technologies Corporation
    Inventors: Eric Herbst, Jeffrey D. Melman
  • Publication number: 20110129330
    Abstract: An apparatus for controlling a fluid flow is disclosed herein. The apparatus includes first and second spaced walls defining opposite sides of a first fluid passageway extending along a first axis. At least one of the first and second walls is cantilevered along the first axis and includes a distal end moveable relative to the first axis. The distal end of the at least one wall is moveable in response to changes in the flow temperature to passively vary a size of the first fluid passageway.
    Type: Application
    Filed: November 30, 2009
    Publication date: June 2, 2011
    Inventor: Kevin FARRELL
  • Patent number: 7748601
    Abstract: A brazing assembly includes a tungsten/carbide/cobalt substrate (e.g., wear pad), a second substrate including titanium or titanium alloy (e.g., a midspan shroud of a fan or compressor blade) and a brazing material including gold, nickel, and copper present in respective amounts to improve the ductility of the braze joint. A brazed article includes a first substrate, a second substrate, and a braze joint having a post-braze hardness of between 450 and 600 KHN. A method to improve the impact resistance of a braze joint between a tungsten/carbide/cobalt substrate and a substrate including titanium or alloy thereof includes utilizing a brazing material including gold, nickel, and copper and brazing at temperatures less than about 1900° F. (1038° C.).
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: July 6, 2010
    Assignee: General Electric Company
    Inventors: Kazim Ozbaysal, David Edwin Budinger
  • Patent number: 7748945
    Abstract: An apparatus for sealing a turbine against leakage of a working fluid comprising at least one radially displaceable sealing ring, coaxially disposed about a rotating member of the turbine from a stationary member of the turbine, which sealing ring undergoes radial displacements that are coupled to radial displacements of the rotating member, such that a design radial clearance is substantially maintained without damage to the apparatus.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: July 6, 2010
    Inventor: Jerry Wayne Johnson
  • Patent number: 7314670
    Abstract: A welded component includes at least one high temperature segment of a high alloy Cr steel with high creep strength and a low temperature segment of a low alloy steel with high toughness and/or a high yield strength which are connected materially to one another via a weld joint. In one such component a gradual transition of chemical, physical and mechanical properties in the joining area is achieved in that between the weld joint and the high temperature segment there are at least two successive clad layers of at least two lower alloy weld metals with a total content of elements which increase the creep strength, such as for example Cr, Mo, W and V, which total content decreases toward the weld joint, and/or an increasing total content of elements which increase the toughness and/or yield strength, such as for example Ni and Mn, which total content increases toward the weld joint.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: January 1, 2008
    Assignee: ALSTOM Technology Ltd
    Inventors: Herbert Bartsch, Richard Brendon Scarlin
  • Patent number: 7198454
    Abstract: An axial flow compressor (16) comprises a plurality of variable stator vanes (32) circumferentially spaced apart and extending radially. Each variable stator vane (32) is rotatably mounted on a compressor casing (28). A control ring (38) surrounds the compressor casing (28). Each variable stator vane (32) is connected to the control ring (38) by a respective one of a plurality of operating levers (40) and the control ring (38) is spaced from the compressor casing (28) by a clearance. A plurality of bimetallic strips (50) are arranged circumferentially and are positioned radially between the control ring (38) and the compressor casing (28) and the bimetallic strips (50) control the clearance between the control ring (38) and the compressor casing (28) whereby any error of the variable stator vane (32) angular position is reduced. Each bimetallic strip (50) extends radially outwardly from the compressor casing (28) towards the control ring (38).
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: April 3, 2007
    Assignee: Rolls-Royce plc
    Inventor: Dale E Evans
  • Patent number: 7118322
    Abstract: A device for injecting cooling air into a turbo-machine turbine rotor includes a plurality of injectors distributed regularly around a longitudinal axis of the turbomachine and mounted between an inner shroud and an outer shroud. Each injector has a bimetallic structure with a first metal material forming a major portion of the structure of the injector and having a first coefficient of thermal expansion, and a second metal material forming a complementary portion of the structure in the vicinity of the suction side wall meeting the trailing edge of the injector, and having a second coefficient of thermal expansion that is smaller than the first.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: October 10, 2006
    Assignee: Snecma Moteurs
    Inventor: Didier Mortgat
  • Patent number: 7094035
    Abstract: The invention relates to a hybrid blade (1) for thermal turbomachines, having an airfoil (2) made of a metallic material of a certain density, and having a blade root (3). It is characterized in that the blade root (3), compared with the airfoil (2), is made of a different metallic material having a lower density, and in that the airfoil (20) is connected to the blade root (3) in a positive-locking manner. The blade in this case is advantageously a compressor blade, in particular a high-pressure compressor blade, in which the airfoil (2) is made of a stainless CrNi steel and the blade root (3) is made of a high-temperature titanium alloy or an intermetallic gamma titanium aluminide alloy or an intermetallic orthorhombic titanium aluminide alloy.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: August 22, 2006
    Assignee: ALSTOM Technology Ltd.
    Inventors: Thomas Kramer, Andreas Kuenzler, Mohamed Yousef Nazmy, Markus Staubli
  • Patent number: 7033131
    Abstract: For material reduction, a fan blade made of solid material for a gas-turbine engine is provided in the area of the blade tip with at least one cavity (5) extending from the face of the blade tip. Thus, apart from the aspect of weight saving, the vibration amplitudes and the centrifugal forces can be reduced considerably and the natural vibration behavior improved in a simple manner, ultimately increasing mechanical strength.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: April 25, 2006
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventor: Karl Schreiber
  • Patent number: 6966758
    Abstract: A wind turbine rotor blade (10) comprising one or more means (4) secured to the blade (10) for changing the profile thereof depending on the atmospheric temperature. The means comprises at least one laminate having at least two layers of materials with differing thermal expansion coefficients.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: November 22, 2005
    Assignee: LM Glasfiber A/S
    Inventors: Peter Grabau, Ib Frydendal
  • Patent number: 6926495
    Abstract: A sealing system for reducing a gap between a tip of a shrouded turbine blade and a stationary shroud of a turbine engine. The sealing system includes one or more seal lands extending from a shrouded turbine blade toward a stationary shroud of a turbine engine. During operation of the turbine engine, the seal lands straighten and extend towards the stationary shroud of the turbine engine, thereby reducing the leakage of air past the shrouded turbine blades and increasing the efficiency of the turbine engine. The sealing system may also include one or more protrusions extending from the stationary shroud towards the tips of the shrouded turbine blades.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: August 9, 2005
    Assignee: Siemens Westinghouse Power Corporation
    Inventor: Ihor S. Diakunchak
  • Patent number: 6755609
    Abstract: A radial-flow pump (1), and especially a coolant pump for an internal combustion engine, comprising an impeller (2) provided with vanes (5) and a directing device (4) including at least one temperature- and/or speed-sensitive element for temperature-dependent control of the coolant flow, where at least one impeller vane (5) and/or the directing device (4) is configured as a speed-sensitive element. In order to increase efficiency, the proposal is put forward that the impeller vanes (5) should be elastically deformable by Coriolis forces of the coolant flow, the discharge angles (&agr;), which are preferably defined between impeller vanes (5) and impeller tangential planes (&egr;), decreasing with an increase in speed.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: June 29, 2004
    Assignee: TCG Unitech Aktiengesellschaft
    Inventors: Markus Preinfalk, Heinz Klaus, Fritz Atschreiter
  • Publication number: 20030099539
    Abstract: This invention relates to a radial-flow pump (1), and especially a coolant pump for an internal combustion engine, comprising an impeller (2) provided with vanes (5) and a directing device (4) including at least one temperature- and/or speed-sensitive element for temperature-dependent control of the coolant flow, where at least one impeller vane (5) and/or the directing device (4) is configured as a speed-sensitive element. In order to increase efficiency, the proposal is put forward that the impeller vanes (5) should be elastically deformable by Coriolis forces of the coolant flow, the discharge angles (&agr;), which are preferably defined between impeller vanes (5) and impeller tangential planes (&egr;), decreasing with an increase in speed.
    Type: Application
    Filed: November 7, 2002
    Publication date: May 29, 2003
    Inventors: Markus Preinfalk, Heinz Klaus, Fritz Atschreiter
  • Patent number: 6485255
    Abstract: A cooling air flow control device for a gas turbine engine, the cooling air flow control device comprising a component, a cooling passage defined within the component and a shaped memory metal valve, the shaped memory metal valve disposed in the cooling passage to regulate, in use, the flow rate of a cooling air flow supplied, in operation, through the cooling passage wherein the shaped memory metal valve operates by changing shape to control the flow rate of the cooling air flow in response to the temperature of the component.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: November 26, 2002
    Assignee: Rolls-Royce plc
    Inventors: Ian C D Care, Roger Ashmead
  • Publication number: 20020131859
    Abstract: A propeller or fan, in particular a cooling fan, such as for the radiator of a motor vehicle or electric equipment, for civil or industrial plants, comprising shape-memory actuator means to regulate the direction and/or shape of the blades, for example according to variations in temperature.
    Type: Application
    Filed: March 18, 2002
    Publication date: September 19, 2002
    Applicant: C.R.F. SOCIETA CONSORTILE PER AZIONI
    Inventors: Stefano Alacqua, Francesco Butera
  • Patent number: 6439847
    Abstract: An air-cooled turbine blade (1) is provided in the cavity (5) of the blade body (3) with an insert (6) made of a shape memory alloy. Due to the contraction of the insert (6) after a certain temperature threshold value is exceeded, the cooling system (12) of the turbine blade (1) is enlarged in the interior. The size of the cooling system (12) (effectiveness of the cooling, cooling-air quantity, size of cooling passages) is therefore advantageously dependent upon the ambient temperature.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: August 27, 2002
    Assignee: ALSTOM (Switzerland) Ltd.
    Inventor: Ulrike Taeck
  • Patent number: 6331361
    Abstract: A method for manufacturing and repair wherein a component composed of equiaxed cast or wrought alloys has at least one section joined thereto composed of directionally solidified or single crystal material
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: December 18, 2001
    Assignee: Hickham Industries, Inc.
    Inventors: Hans van Esch, Wayne Greaves
  • Publication number: 20010021342
    Abstract: An air-cooled turbine blade (1) is provided in the cavity (5) of the blade body (3) with an insert (6) made of a shape memory alloy. Due to the contraction of the insert (6) after a certain temperature threshold value is exceeded, the cooling system (12) of the turbine blade (1) is enlarged in the interior. The size of the cooling system (12) (effectiveness of the cooling, cooling-air quantity, size of cooling passages) is therefore advantageously dependent upon the ambient temperature.
    Type: Application
    Filed: January 31, 2001
    Publication date: September 13, 2001
    Inventor: Ulrike Taeck
  • Patent number: 6015263
    Abstract: A fluid moving device (100) includes a rotatable assembly (101), and a plurality of fan blades (102-04) disposed circumferentially around and extending outward from rotatable assembly (101), at least one of plurality of fan blades (102-04) includes shape memory alloy. The fan blade which includes shape memory alloy transforms into a predetermined shape memory state when the fan blade experiences a predetermined temperature which may be as a result of a predetermined temperature of surrounding fluid passing over fan blades (102-04) when rotation of rotatable assembly (101) is at a given speed. The shape memory state increases or decreases volume flow of surrounding fluid when rotatable assembly (101) is rotating at substantially a constant speed. The speed is substantially constant which limits noise generated from fluid moving (100) device while volume flow rate of the fluid moving device is being changed.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: January 18, 2000
    Assignee: Motorola, Inc.
    Inventor: Garron Morris
  • Patent number: 5311749
    Abstract: An air cycle machine (10) has a first stage turbine (60) mounted to a central portion of a common shaft (12), a compressor (50) mounted to the central portion of the shaft (12), a second stage turbine (30) mounted to a first end of the shaft (12), and a fan (40) mounted to a second end of the shaft (12), all for rotation therewith about a longitudinal axis (14). The first and second stage turbines (60, 30) are operative to extract energy from a flow of compressed air for driving the shaft (12), and the fan (40) and the compressor (50), in rotation about the axis (14).
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: May 17, 1994
    Assignee: United Technologies Corporation
    Inventors: Christopher McAuliffe, John F. Maher, Jr.
  • Patent number: 5207558
    Abstract: Thermally actuated flow diverters for gas turbine engines are provided which include an arrangement of vanes in spaced overlapping array, which direct, e.g. coolant air flow to rotating engine components, each vane having 3 foil components joined at 3 hinge points. That is, a leading foil positioned on the suction side of the vane, a trailing foil pivotably mounted to a rearward portion of such leading foil at a first pivot axis and a third foil positioned on the pressure side of the vane connecting a forward portion of such leading foil and such trailing foil at second and third pivot axes respectively. Either the third foil or the leading foil is fixedly mounted to engine walls of the same material, the other of these two foils defining an actuation link that is expandable and contractable relative to such walls; the third foil having a coefficient of thermal expansion greater than that of the leading foil.
    Type: Grant
    Filed: October 30, 1991
    Date of Patent: May 4, 1993
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Michael P. Hagle, Paul S. Wilson
  • Patent number: 5092737
    Abstract: A blade tip clearance control arrangement for a compressor of a gas turbine engine comprises a first annular control member which defines a portion of the gas flowpath through the compressor and which is spaced from the tips of the rotor blades by a clearance. The first annular control member is positioned coaxially inwardly of a pair of second annular control members and is secured thereto by a radially resilient annular support member.The first annular control member is formed from a relatively low expansion material and the second annular control members are formed from a relatively high expansion material.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: March 3, 1992
    Assignee: Rolls-Royce plc
    Inventor: Kwok Y. Lau
  • Patent number: 5064343
    Abstract: The problem of excessive clearances being generated by rub occurring between the tips of turbine blades and the linings on shroud segments which surround the blades is addressed by way of providing a valve 42 of a metal of different coefficient of expansion than the shroud control ring 24. On ground running prior to take off of an associated aircraft, the valve diverts a cooling airflow away from the ring 24, thus causing it to run hot and expand radially. The shrouds 22 are thus moved away from the blade tips 40 and on take off, are sufficiently far away from the tips 42 as to avoid deep penetration of the lining 38 thereby. The higher temperature generated by take off affects the valve 40 and makes it expand rapidly, to open the cooling airflow paths to the ring 24 via the holes 46 and 50.
    Type: Grant
    Filed: July 13, 1990
    Date of Patent: November 12, 1991
    Inventor: Stephen J. Mills
  • Patent number: 5035572
    Abstract: An arrangement for adjusting guide blades by thermal expansion has an expansion rod which has a significantly different coefficient of linear expansion with respect to the supporting housing and is aligned in the circumferential direction of the turbo-engine and is connected with an adjusting ring by way of a step-up lever. As a result, a guide blade adjustment can be achieved easily as a function of the working gas temperature.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: July 30, 1991
    Assignee: MTU Motoren-und Turbinen-Union Munchen GmbH
    Inventor: Joachim Popp
  • Patent number: 5007742
    Abstract: Disclosed is a temperature-sensing member including a columnar or hollow cylindrical base having a configuration of a circular or polygonal column or a hollow circular or polygonal cylinder; and at least one strip member of a material having a different coefficient of thermal expansion from that of the base, wherein the strip member is provided on at least a portion of an outer peripheral surface of the base at an acute angle with respect to an axis of the base and in such directions as to intersect each other on opposite sides of the base. In a case where two or more of the strip members are provided on the base, the strip members are disposed in mutually different directions with respect to an axis of the base and at an acute angle with respect to the base.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: April 16, 1991
    Assignee: Usui Kokusai Sangyo Kaisha Limited
    Inventors: Masayoshi Usui, Hiroshi Kanesaka
  • Patent number: 4969799
    Abstract: Each blade of a blower fan has a parallel wire group for each side whose thermal expansion coefficient is smaller than that of the blade. The two parallel wire groups are provided substantially over the whole area of a suction-side surface and of a discharge-side surface of the blade such that they extend from the front edge of the suction-side surface and from the rear edge of the discharge-side surface outward obliquely to the radial direction of the blade to cross each other on the face and back sides so as to result in the shape of an "X". Due to a difference of thermal expansion coefficient, in a high-temperature state, camber appears on the blade in oblique directions, and the front edge and the rear edge camber in opposite directions; thus, the blade undergoes torsional deformation to largely vary the angle of incidence.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: November 13, 1990
    Assignee: Usui Kokusai Sangyo Kaisha Ltd.
    Inventors: Masayoshi Usui, Takeshi Matsumoto
  • Patent number: 4778339
    Abstract: A fan blade which makes use of the difference in the thermal expansion coefficient to enable the angle of attack to be variable without a substantial change in the camber quantity and without the need to employ a temperature-sensitive fan clutch. The blade is provided with two plate-like members having a smaller thermal expansion coefficient than that of the blade in such a manner that one of the plate-like members is provided on the suction-side surface of the blade so as to extend from the forward edge portion at the distal end of the blade toward the rearward edge portion at the proximal end of the blade, and the other plate-like member is provided on the delivery-side surface of the blade so as to extend from the rearward edge portion at the distal end of the blade toward the forward edge portion at the proximal end of the blade, that is, the two plate-like members provided on the obverse and reverse surface, respectively, of the blade cross each other in a substantially X-shape.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: October 18, 1988
    Assignee: Usui Kokusai Sangyo Kabushiki Kaisha
    Inventors: Masayoshi Usui, Hiroshi Kanesaka