With Shaft Connected Fluid Force Subjected Thrust Balancing Surface Patents (Class 415/104)
  • Patent number: 9689402
    Abstract: A centrifugal pump impellor includes balancing holes that reduce axial thrust while minimizing the loss of pump efficiency. In one general aspect, the balancing holes penetrate the rear shroud between the blades, and are angled in both axial and rotational directions so as to direct the leakage fluid approximately parallel to the primary process fluid, so that it causes minimal interference with the primary fluid flow. In a second general aspect, the balancing holes extend from the rear cavity within the impellor blades and through the leading edges of the blades, thereby entering the primary flow in locations where the process fluid is almost static relative to the blades. This minimizes the impact on the flow of the process fluid past the blades, and thereby minimizes the loss of pump efficiency caused by the balance holes. In embodiments, each blade leading edge includes a plurality of balancing hole outlets.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: June 27, 2017
    Assignee: Flowserve Management Company
    Inventors: Kariem Elebiary, Scott Judge, Edouard Morlac, Mark O'Sullivan
  • Patent number: 9683447
    Abstract: Components resistant to traveling wave vibration and methods for manufacturing the same are provided. The component comprises a component body and a plurality of features disposed thereabout according to an asymmetry pattern that separates a pair of repeated eigenvalues associated with a targeted mode that deflects in excess of a threshold deflection limit in response to traveling wave excitation. The method comprises identifying, in a model of a rotationally periodic component, one or more modes thereof that deflect in excess of a threshold deflection limit in response to a traveling wave excitation. Each of the modes has a pair of repeated eigenvalues associated therewith. An asymmetry pattern is determined that separates each pair of repeated eigenvalues by a desired frequency split. A plurality of features are formed and disposed according to the asymmetry pattern about the component body defining an asymmetrical component comprising the component resistant to traveling wave vibration.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: June 20, 2017
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: David P. Gentile, Jeff Lentz, Gerhard Schroeder
  • Patent number: 9677562
    Abstract: An electrical submersible pump assembly includes a centrifugal pump having stages. Each of the stages has an impeller in cooperative engagement with a downstream diffuser. The impeller is axially movable relative to the downstream diffuser between a downthrust and an upthrust position. The downstream diffuser has an annular downstream wall surface, relative to the impeller, defining a downstream cavity. The impeller has a downstream balance ring that locates alongside the downstream wall surface. An annular clearance between the downstream balance ring and the downstream wall surface increases in response to the impeller moving from the downthrust to the upthrust position.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: June 13, 2017
    Assignee: Baker Hughes Incorporated
    Inventors: David F. McManus, Brown Lyle Wilson
  • Patent number: 9677569
    Abstract: A fluid machine in communication with a thrust bearing fluid source includes a housing having a bearing portion receiving fluid from the fluid source. A bearing chamber is formed in the bearing portion. An extension of a rotor is positioned within the bearing chamber so that a first pocket is disposed adjacent to a first side of the extension and a second pocket is disposed adjacent to a second side of the extension. An extension lateral side is adjacent to the bearing chamber lateral side. The extension comprises a first channel extending from a first half of the extension lateral side to the first pocket. The extension comprises a second channel extending from a second half of the extension lateral side opposite the first channel to the second pocket. The bearing chamber receives fluid from the bearing channel which is communicated to the first and second channels and the pockets.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: June 13, 2017
    Assignee: Fluid Equipment Development Company, LLC
    Inventor: Jason B. Hunt
  • Patent number: 9657592
    Abstract: The present invention relates to a cooling device for a jet engine having an axial compressor with several compressor stages including a rotor with rotor blades, a stator with stator vanes and an annulus. In order to reduce the temperature of the components at the outlet of the high-pressure compressor by simple measures and hence to increase the efficiency of a jet engine, a slot-like branch opening surrounding the rotor for a cooling airflow diverted from the main airflow into a first cavity upstream of the rotor is provided upstream of the last compressor stage of the axial compressor, with passage openings being arranged in the rotor for passing on the diverted cooling airflow from the first cavity into a second cavity downstream of the rotor.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: May 23, 2017
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventor: Sacha Pichel
  • Patent number: 9555174
    Abstract: The present disclosure relates to a rotary blood pump with a double pivot contact bearing system with an operating range between about 50 mL/min and about 1500 mL/min, wherein the force on the upper bearing is less than 3N during operating speeds up to 6000 rpm. The disclosure also relates to a method of using a blood pump system for persistently increasing the overall diameter and lumen diameter of peripheral veins and arteries by persistently increasing the speed of blood and the wall shear stress in a peripheral vein or artery for period of time sufficient to result in a persistent increase in the overall diameter and lumen diameter of the vessel.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: January 31, 2017
    Assignee: FLOW FORWARD MEDICAL, INC.
    Inventors: F. Nicholas Franano, Howard M. Loree, II, Geoff Tansley, Steve Woodard, Barrett Hutto
  • Patent number: 9556876
    Abstract: A centrifugal fluid machine includes an impeller (4) that has a front shroud (41) arranged on one side in an axial direction, a rear shroud (42) arranged on the other side in the axial direction, and a plurality of blades (43) provided side by side in a circumferential direction between the front shroud and the rear shroud and is rotatably supported within a casing (2); a suction passage (2A) that allows a fluid to be sucked therethrough in the axial direction toward the impeller with the rotation of the impeller; a discharge passage (2B) that allows a fluid delivered under pressure by the impeller with the rotation of the impeller to be discharged in a direction intersecting the axial direction of the impeller; and a first flow path (5A) that communicates with the discharge passage, leads to the suction passage through a gap between the casing and the rear shroud, and an opening (5Aa) that opens toward the downstream side of the suction passage in a suction direction of a fluid.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: January 31, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Takeshi Sano, Shinji Fukao, Koichi Ishizaka, Kenichi Niu, Yuya Fukuda
  • Patent number: 9404504
    Abstract: The blower comprises: a stator being provided in a case; a radial bearing being provided in the case; a rotor shaft being provided in the case and supported by the stator and the radial bearing; a rotor being integrated with the rotor shaft; and an impeller being integrated with the rotor shaft, the impeller sucking a fluid into the case from an axial direction and sending the same in the circumferential direction of the impeller. The impeller is attached to the rotor shaft to make a blade forming surface of the impeller face the rotor in the axial direction. A shaft end of the rotor shaft, which is located on the opposite side of the impeller, is supported by a thrust receiving member.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: August 2, 2016
    Assignee: SHINANO KENSHI KABUSHIKI KAISHA
    Inventor: Takeki Sakai
  • Patent number: 9366250
    Abstract: A hydraulic device includes a cover plate with a cylinder hole opposite an end surface of a rotating shaft of a gear which receives two thrust forces in the same direction. A piston extends through the cylinder hole. A working liquid in a high pressure side acts on a back surface of the piston to press the piston onto the end surface of the rotating shaft, thereby causing a drag that cancels the two thrust forces acting on the gear.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: June 14, 2016
    Assignee: SUMITOMO Precision Products Co., Ltd.
    Inventors: Hiroaki Takeda, Tetsuro Hosokawa
  • Patent number: 9309768
    Abstract: A turbine includes a stator (10) and a rotor (20); a plurality of turbine stages (30) through which a flow path of an operating fluid extends; an axial thrust balancing piston (40) arranged at the rotor and a first piston chamber (41) connected to one of the turbine stages (30.1) so that the operating fluid can be conveyed into the first piston chamber with a first fluid pressure, and a second piston chamber (42) has a counterpressure so that an axial thrust opposed to a flow direction of the operating fluid can be exerted on the rotor; and a pressure control device (60) connected to the second piston chamber. The pressure control device constructed to vary the counterpressure by controlled removal of fluid from the second piston chamber so that the axial thrust of the axial thrust balancing piston can be varied.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: April 12, 2016
    Assignee: MAN Diesel & Turbo SE
    Inventors: Björn Reinhold, Thomas Schaake
  • Patent number: 9181955
    Abstract: A product and method for use with a turbocharger system may include a housing with a shaft rotatably supported by the housing. The shaft may extend in an axial direction. A bearing assembly may support the shaft in the housing. A wheel may be connected to the shaft and may rotate relative to the housing. A clearance opening may be defined in the axial direction between the wheel and the housing. A thrust washer may be engaged with the bearing assembly. The thrust washer may have an outer circumference and may be movable relative to the housing. An efficiency washer may be disposed around the outer circumference of the thrust washer and may determine the clearance opening by defining a space within which the thrust washer moves relative to the housing in the axial direction.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: November 10, 2015
    Assignee: BorgWarner Inc.
    Inventor: Timothy House
  • Publication number: 20150132105
    Abstract: The invention provides a tilting-pad thrust bearing that requires less oil supply and a rotary machine having the same. A tilting-pad thrust bearing 100 comprises: multiple oil inlets 10 disposed in spaces between pads 6; multiple outflow guide grooves 12 each formed near the inner circumferential edge of the sliding surface of the pad 6 such that the outflow guide grooves 12 extend in a circumferential direction; and multiple inflow guide grooves 13 provided separately from the outflow guide grooves 12 and formed at the leading ends of the sliding surfaces of the pads 6 so as to be located more radially inward than the oil inlets 10. Each outflow guide groove 12 is open to the sliding surface and the trailing end surface of the pad 6. Each inflow guide grooves 13 is open to the leading end surface and the sliding surface of the pad 6.
    Type: Application
    Filed: November 5, 2014
    Publication date: May 14, 2015
    Inventors: Makoto HEMMI, Kenichi MURATA, Kenta SUZUKI
  • Publication number: 20150125263
    Abstract: A compressor oil seal comprising a thrust bearing (59) adapted for insertion into a turbocharger housing cavity (33), concentric with the turbocharger's compressor wheel shaft (11). An insert (360) is adapted for insertion into the cavity (33) adjacent the thrust bearing (59), wherein the thrust bearing (59) and insert (360) are configured to provide an oil drain cavity (35) therebetween. The oil seal also includes an oil flinger (340) that includes a flinger flange (382) and a sleeve portion (383) extending therefrom. The flinger flange (382) extends between the thrust bearing (59) and the insert (360). A plurality of spiral vane segments (74) are circumferentially spaced about the flinger flange (382). Each spiral vane segment (74) extends arcuately from a first end (372) to a second end (373). The spiral vane segments (74) are disposed between the flinger flange (382) and the insert (360).
    Type: Application
    Filed: May 1, 2013
    Publication date: May 7, 2015
    Inventor: David G. Grabowska
  • Publication number: 20150078884
    Abstract: A turbocharger includes: a bearing provided in a turbocharger body, and configured to rotatably support a turbine shaft in an insertion hole formed in the bearing; and an opposing portion which faces an end surface of the bearing in an axial direction of the turbine shaft. An end-surface guide portion is provided to any one of an opposing surface of the bearing which faces the opposing portion, and an opposing surface of the opposing portion which faces the bearing. The end-surface guide portion configured to make the insertion hole and an outer peripheral edge of the end surface of the bearing in radial directions of the turbine shaft communicate with each other extends forward in a rotational direction of the turbine shaft from a part of the end surface of the bearing which communicates with the insertion hole.
    Type: Application
    Filed: November 20, 2014
    Publication date: March 19, 2015
    Applicant: IHI Corporation
    Inventors: Yutaka UNEURA, Tomomi Otani, Yuichi Daito
  • Patent number: 8961102
    Abstract: A system and method for sealing a shaft disposed for rotation within a casing, where two axially-spaced seal rings of an oil film seal extend around the shaft and define a clearance therebetween. Oil is pumped into the clearance from an oil reservoir and a portion of the oil is received in an annular port defined in the casing between an outer labyrinth seal and one of the axially-spaced seal rings. The oil mixes with a process gas to for an oil and gas mixture. A blower is in fluid communication with the annular port and circulates the oil and gas mixture to a trap where the oil is separated from the process gas and a separated process gas is returned back to the annular port.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: February 24, 2015
    Assignee: Dresser-Rand Company
    Inventor: Philippe Auber
  • Patent number: 8939738
    Abstract: A thrust shaft for a fan has a shaft body with an enlarged disk adjacent one axial end to provide a rotating surface in a pair of thrust bearings. A first cylindrical portion extends from the disk in a first direction, and a second cylindrical portion extending from the disk in a second opposed direction. The second cylindrical portion has a hollow bore, and there are a plurality of holes extending through the second cylindrical portion to communicate an outer periphery with the bore. A ratio of the diameter of the bore to a diameter of the plurality of air holes is between 6.60 and 7.00. A ratio of an overall length of the second cylindrical portion, and a distance from a face of the enlarged disk to a center of the holes is between 14.4 and 15.2. A thrust bearing assembly, a fan, a cabin air supply system, and a method are also disclosed.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: January 27, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Craig M. Beers, Lawrence Binek, Valentina Lugo
  • Patent number: 8935926
    Abstract: An impeller includes a plurality of vanes formed around a hub, each of the plurality of vanes defines an offset between a leading edge and a trailing edge.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 20, 2015
    Assignee: United Technologies Corporation
    Inventors: Joel H. Wagner, Shankar S. Magge, Keith A. Santeler
  • Patent number: 8925197
    Abstract: The present invention provides a method and apparatus of inhibiting a thrust bearing capacity of a compression system from being exceeded during a surge event in which a thrust bearing is biased with a biasing force to increase the thrust bearing overload margin between the capacity of thrust bearing to absorb axial forces and the greatest force produced during the surge event. This biasing force can be produced by appropriately sizing the high pressure seal on the side of the impeller opposite to the inlet of a compressor of the compression system so that the back disk force produced in the high pressure region of the high pressure seal and the low pressure region located inwardly of the high pressure region creates the desired bias force value and direction.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: January 6, 2015
    Assignee: Praxair Technology, Inc.
    Inventors: John H. Royal, Michael J. Stanko
  • Patent number: 8905707
    Abstract: An air cycle machine has a housing which holds a compressor section, and a turbine section having an expansion area, and a fan section disposed outside of the housing. A shaft, which attaches to and is coaxial with the compressor section, the turbine section and the fan section, is supported by an air journal bearing and an air thrust bearing. The shaft has a hollow core for porting cooling air from the air journal bearing and the air thrust bearing, and a tube that extends into said expansion area and communicates cooling air from the turbine expansion area to the thrust bearing.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: December 9, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Darryl A. Colson, Seth E. Rosen, Eric Chrabascz
  • Patent number: 8894387
    Abstract: An axial flow pump for a blood circulating pump for the circulation of blood, the rotor the rotor being constructed and arranged to impel blood in a downstream direction upon rotation of the rotor about its axis in a forward circumferential direction. The rotor is provided with hydrodynamic thrust bearing surfaces, each such thrust bearing surface being constructed and arranged to apply a hydrodynamic force to the rotor with a component of the force in the downstream direction upon rotation of the rotor in the forward circumferential direction.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: November 25, 2014
    Assignee: HeartWare, Inc.
    Inventor: Daniel G. White
  • Patent number: 8893499
    Abstract: An expander-generator is disclosed having an expansion device and a generator disposed within a hermetically-sealed housing. The expansion device may be overhung and supported on or otherwise rotate a hollow expansion rotor having a thrust balance seal being arranged at least partially within a chamber defined in the expansion rotor. Partially-expanded working fluid is extracted from an intermediate expansion stage and a first portion of the extracted working fluid is used cool the generator and accompanying radial bearings. A second portion of the extracted working fluid may be introduced into the chamber defined within the expander rotor via a conduit defined in the thrust balance seal chamber. The second portion of extracted working fluid minimizes unequal axial thrust loads on the expander rotor due to the overhung arrangement.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: November 25, 2014
    Assignee: Dresser-Rand Company
    Inventor: William C. Maier
  • Patent number: 8870521
    Abstract: A centrifugal pump for delivering hot fluids, having a contacting shaft seal, a seal housing (13) for the shaft seal (14), and a return line (8) for a partial flow of the delivered fluid, in which no delivered fluid is discharged out of the seal housing (13); a separate housing cover (9) is disposed between the seal housing (13) and the pump housing (1); there is a contact surface which minimizes heat transfer between the seal housing (13) and the housing cover (9); and the return line (8) is connected to the housing cover (9) and/or to the pump housing (1).
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: October 28, 2014
    Assignee: KSB Aktiengesellschaft
    Inventors: Bernhard Brecht, Uwe Bruhns, Frank Sehr
  • Patent number: 8827639
    Abstract: A compressor rotor compresses and delivers compressed air across a turbine rotor. The turbine rotor is connected to the compressor rotor such that rotation of the turbine rotor drives the compressor rotor. A shaft is connected to rotate with the turbine rotor and the compressor rotor. A thrust bearing is provided by a member extending perpendicular and radially outwardly of the shaft. The member rotates with the shaft and faces a first housing wall. A hollow chamber is formed on an opposed side of the first housing wall. A cooling air path supplies air across a thrust bearing surface, and between the member and the first housing wall. The first housing wall has a communication hole for communicating cooling air from the cooling air path into the hollow cavity to drive air within the hollow chamber. Also, a housing incorporating the communication hole is disclosed.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: September 9, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Craig M. Beers, Brent J. Merritt, Victoria S. Richardson
  • Patent number: 8827636
    Abstract: A turbomachine includes a compressor having a cartridge that is configured to slide in and out of an external casing. The turbomachine further includes an electrical motor having a motor shaft configured to be connected to the compressor shaft. A conduit is configured to extend through the statoric part of the compressor or the motor, from a first magnetic bearing to the second magnetic bearing. The conduit includes conduit electrical cables provided inside the conduit and extending from a first end of the conduit to a second end of the conduit; and electrical cables connecting one of the first and second magnetic bearings to an external connector via the conduit electrical cables of the conduit.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: September 9, 2014
    Assignee: Nuovo Pignone S.p.A
    Inventors: Massimiliano Mariotti, Luciano Mei, Silvio Giachetti
  • Patent number: 8807920
    Abstract: A pump assembly with a rotatable rotor shaft (10), wherein the rotor shaft (10) includes at least one axial bearing (36, 40) and a radial bearing (30, 32), which are integrated into a common bearing assembly (16).
    Type: Grant
    Filed: October 18, 2008
    Date of Patent: August 19, 2014
    Assignee: Grundfos Management a/s
    Inventors: Helge Grann, Alfred Lisbjerg Pedersen
  • Patent number: 8801405
    Abstract: A sealless-type centrifugal pump includes a casing that forms a pump chamber having a liquid inflow port and an outflow port, an impeller disposed in the pump chamber and rotatably supported by a pivot bearing, and a magnetic coupling device including a driven permanent magnet built into the impeller and a driving magnet that rotationally drives the driven permanent magnet through a partition. The impeller supported in the direction of the rotation axis with respect to the casing is driven by the magnetic coupling device, and pressure is applied to liquid introduced from the direction of the rotation axis through the inflow port to send the liquid through the outflow port in a radial direction. The magnetic coupling device is disposed on a line inclined from an impeller rotating surface to the inflow port side toward the center of the rotation axis.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: August 12, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hideo Hoshi, Syogo Nakashima, Tatsuya Hidaka, Yasuharu Yamamoto, Takeshi Okubo
  • Publication number: 20140199161
    Abstract: A cooling mechanism for a steam turbine is provided, which has, in the area of the valve connection a cooling channel, into which cooling steam flows from the flow channel, the steam then being fed as cooling steam in the area of the thrust balance piston.
    Type: Application
    Filed: August 1, 2012
    Publication date: July 17, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Martina Holder, Christian Lenz, Norbert Pieper, Rudolf Potter, Dominic Schlehuber, Uwe Zander
  • Patent number: 8770952
    Abstract: A sealless-type centrifugal pump includes a casing that forms a pump chamber having a liquid inflow port and an outflow port, an impeller disposed in the pump chamber and rotatably supported by a pivot bearing, and a magnetic coupling device including a driven permanent magnet built into the impeller and a driving magnet that rotationally drives the driven permanent magnet through a partition. The impeller supported in the direction of the rotation axis with respect to the casing is driven by the magnetic coupling device, and pressure is applied to liquid introduced from the direction of the rotation axis through the inflow port to send the liquid through the outflow port in a radial direction. The magnetic coupling device is disposed on a line inclined from an impeller rotating surface to the inflow port side toward the center of the rotation axis.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: July 8, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hideo Hoshi, Syogo Nakashima, Tatsuya Hidaka, Yasuharu Yamamoto, Takeshi Okubo
  • Patent number: 8764377
    Abstract: The invention relates to an axial bearing (10) comprising at least one or more segments (18) on each of the front side (22) and the rear side (26) thereof, wherein the segments (18) on the opposite sides (22, 26) each are disposed at least partially offset from each other.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: July 1, 2014
    Assignee: Continental Automotive GmbH
    Inventors: Dirk Frankenstein, Dag Hauschild, Johann Hauser, Jochen Held, Stefan Nowack, Konrad Viessmann
  • Patent number: 8753068
    Abstract: A highly efficient and long-life pump is provided through improvement of pump efficiency by extending an effective length of a blade of an impeller and through reduction of friction loss of a thrust bearing. In a pump 110, a suction direction X and a discharge direction Y of a liquid are approximately perpendicular to each other.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: June 17, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Noriaki Matsunaga, Hiroki Aso
  • Patent number: 8753069
    Abstract: An apparatus for supporting a shaft of a turbomachine. The apparatus may include a magnetic bearing to support the shaft during a normal operation of the turbomachine, and an auxiliary bearing to support the shaft during a drop event. The apparatus may also include a disk coupled to the shaft and comprising a substantially non-ferrous, conductive material, and a magnetic assembly disposed proximal the disk, the magnetic assembly configured to magnetically engage the disk to damp vibrations during the drop event, to apply a circumferential braking force on the disk during the drop event, or both.
    Type: Grant
    Filed: July 30, 2011
    Date of Patent: June 17, 2014
    Assignee: Dresser-Rand Company
    Inventor: Martin D. Maier
  • Patent number: 8747053
    Abstract: A method for producing a lubricant feed in an axial bearing, wherein the lubricant feed is designed as a channel guiding lubricant from a lubricant pocket of the axial bearing, includes the following steps: preparing an initial axial bearing mold, stamping a groove in the area of the initial mold in which the channel is planned; embossing and putting through material on at least one or both sides of the groove along at least one segment of the groove; stamping the material on the side of the groove toward the groove so that the material and the groove form the channel.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: June 10, 2014
    Assignee: Continental Automotive GmbH
    Inventors: Dirk Frankenstein, Dag Hauschild, Johann Hauser, Jochen Held, Stefan Nowack, Konrad Viessmann
  • Patent number: 8734017
    Abstract: An air bearing shaft for an air cycle machine is provided. The air bearing shaft includes a seal disk and a shaft body. The shaft body includes a first shaft body portion extending from a face of the seal disk to a knife-edge seal. The first shaft body portion includes journal bearing cooling holes positioned axially closer to the knife-edge seal than to the face of the seal disk. The journal bearing cooling holes extend through the first shaft body portion to a hollow interior and have a total cooling area. Start-up holes are positioned axially closer to the face of the seal disk than to the knife-edge seal. The start-up holes extend through the first shaft body portion to the hollow interior. The start-up holes have a total start-up area. A ratio of the total cooling area to the total start-up area is between 2.17 and 4.06.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: May 27, 2014
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Darryl A. Colson, Craig M. Beers, John H. Paliulis
  • Patent number: 8727718
    Abstract: A turbine rotor (1) for a gas turbine with a one-piece compressor housing (11) or a compressor housing (11) which is divided in a first plane, a one-piece turbine housing (12) connected to the compressor housing (11) or a turbine housing (12) which is divided in a second plane different from the first plane comprises a compressor area which includes at least two compressor disks (2.1-2.5) and a turbine area which includes at least one turbine disk (13.1, 13.2). The compressor disks and turbine disks are clamped together by a tie rod arrangement which includes at least one tie rod (6) which has a first fastening area, a second fastening area for clamping at least two compressor disks between the first fastening area and the second fastening area, and a third fastening area for clamping at least one turbine disk.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: May 20, 2014
    Assignee: MAN Diesel & Turbo SE
    Inventors: Emil Aschenbruck, Ralf Müller, Michael Blaswich
  • Patent number: 8678761
    Abstract: A pump device for applying a force opposing axial movement of a pump rotor shaft relative to a pump housing, the pump device having a first housing part, a second housing part axially moveable relative to the first housing part, and a biasing member coupled between the first housing part and the second housing part.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: March 25, 2014
    Assignee: Clyde Union Limited
    Inventor: John Toseland
  • Patent number: 8672610
    Abstract: The invention relates to a unit assembly system for the manufacture of exhaust-gas turbochargers (1) for internal combustion engines, of motor vehicles in particular, wherein the respective exhaust-gas turbocharger (1) has at least one hydrodynamic axial plain bearing (6) for supporting axial forces of a turbine wheel and/or of a compressor wheel (5) on a housing (7), said axial plain bearing having with regard to an axis of rotation (3) of a shaft (2) supporting the turbine wheel and/or the compressor wheel (5) a plurality of wedge-shaped bearing segments (9) distributed in the circumferential direction, which bearing segments work together with at least one level, annular thrust surface (10, 11) that extends transversely to the axis of rotation (3).
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: March 18, 2014
    Assignee: Bosch Mahle Turbo Systems GmbH & Co. KG
    Inventors: Thomas Berger, Andreas Wengert
  • Patent number: 8672611
    Abstract: A rotary blood pump includes a casing defining a pumping chamber. The pumping chamber has a blood inlet and a tangential blood outlet. One or more motor stators are provided outside of the pumping chamber. A rotatable impeller is within the pumping chamber and is adapted to cause blood entering the pumping chamber to move to the blood outlet. The impeller has one or more magnetic regions. The impeller is radially constrained in rotation by magnetic coupling to one or more motor stators and is axially constrained in rotation by one or more hydrodynamic thrust bearing surfaces on the impeller.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: March 18, 2014
    Assignee: HeartWare, Inc.
    Inventors: Jeffrey A. LaRose, Charles R. Shambaugh
  • Publication number: 20140056689
    Abstract: Disclosed is a balance adjustment device of a rotating body including a body configured and structured to rotate based on a rotating axis; a fixation protrusion groove formed on the exterior circumference thereof; a balance ring, wherein a fixation protrusion is formed on an interior circumference of the balance ring that corresponds to the exterior circumference of the rotating body to be inserted into the fixation protrusion groove; and a balance weight formed on the balance ring to adjust the rotating balance.
    Type: Application
    Filed: December 26, 2012
    Publication date: February 27, 2014
    Applicant: HYUNDAI MOTOR COMPANY
    Inventor: Jae Kwon Lee
  • Publication number: 20140049906
    Abstract: A fan assembly for a computing device is disclosed. The device can include an impeller having a number of blades and a motor for turning the blades. The motor can turn the blades via a magnetic interaction between the impeller and the motor. A fluid dynamic thrust bearing can be used to control a position of the impeller relative to the motor. In particular, the impeller can be configured to rotate around an axis and the thrust bearing can be used to control movement of the impeller in a direction aligned with the rotational axis. In one embodiment, the thrust bearing can be configured to stabilize the impeller when vibratory forces act upon the fan assembly. More particularly, parameters associated with the thrust bearing can be selected to counteract vibratory forces emitted by a speaker system.
    Type: Application
    Filed: October 23, 2013
    Publication date: February 20, 2014
    Applicant: Apple Inc.
    Inventors: Anthony Joseph Aiello, Jesse T. Dybenko, Brett W. Degner
  • Publication number: 20140044523
    Abstract: A torque converter for transferring torque from an input shaft to an output shaft, having a turbine wheel, an impeller connected to the input shaft to drive the turbine wheel hydrodynamically, a centrifugal force pendulum connected to the turbine wheel to damp torsional vibrations, a first torsion damper to drive the output shaft by means of the turbine wheel, and a converter clutch and a second torsion damper for selective torsionally damped coupling of the input shaft with the turbine wheel. One of the torsion dampers in this case includes two torsion damper elements, which are arranged in series with each other.
    Type: Application
    Filed: October 18, 2013
    Publication date: February 13, 2014
    Inventors: Benjamin Voegtle, Benjamin Daniel, Thorsten Krause
  • Publication number: 20140037424
    Abstract: An improvement for a turbine generator or pump having main bearings separated by a span of shaft and a thrust equalizing mechanism adjacent one of said main bearings, the improvement comprising a stationary length compensator interposed between the thrust equalizing mechanism and its adjacent main bearing to reduce the span between said main bearings. Preferably the length compensator is composed of material that shrinks less than the shaft of the generator, and the height of the length compensator, i.e., the compensating dimension, is selected according to desired thrust equalizing mechanism operating parameters over a temperature range.
    Type: Application
    Filed: August 1, 2013
    Publication date: February 6, 2014
    Applicant: Ebara International Corporation
    Inventor: Joel V. Madison
  • Publication number: 20140030061
    Abstract: An improvement for a turbine generator or pump having main bearings separated by a span of shaft and a thrust equalizing mechanism adjacent one of said main bearings, the improvement comprising a stationary length compensator interposed between the thrust equalizing mechanism and its adjacent main bearing to reduce the span between said main bearings. Preferably the length compensator is composed of material that shrinks less than the shaft of the generator, and the height of the length compensator, i.e., the compensating dimension, is selected according to desired thrust equalizing mechanism operating parameters over a temperature range.
    Type: Application
    Filed: August 1, 2013
    Publication date: January 30, 2014
    Applicant: Ebara International Corporation
    Inventor: Joel V. Madison
  • Patent number: 8616831
    Abstract: A compressor includes a shaft assembly including a thrust disk disposed on a main shaft and a housing having a first portion and a second portion, the first and second portions adapted to receive the shaft assembly and enclose the shaft assembly therebetween, wherein the shaft assembly is rotatably disposed within the housing, and wherein at least one of the first portion and the second portion includes a shaft assembly retention feature for receiving the thrust disk to regulate a motion of the shaft assembly.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: December 31, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Thomas Wollstadt, Grant William Brady, Gary L. Villeneuve
  • Patent number: 8568084
    Abstract: A system controls net thrust of a steam turbine having a stepped rotating shaft. A first leak off line fluidly couples a first stage of a turbine section to a packing near a stepped portion on the rotating shaft. A second leak off line fluidly couples a second stage of the turbine section that has a pressure different from the first stage to a step area immediately adjacent to the stepped portion, and a connection line fluidly couples the first leak off line to the second leak off line. The lines include control valves such that a controller can actively control the net thrust by regulating thrust pressure on the stepped portion using steam from the first and second stages of the turbine section. The controller may also prevent damage to an active retractable seal using the control valves.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: October 29, 2013
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Bernard Arthur Couture, Jr., Casey William Jones, Binayak Roy
  • Patent number: 8568081
    Abstract: An electrical submersible pumping system having a pump, a motor, a shaft connecting the pump and motor. Coaxially stacked rotating impellers and stationary diffusers are coaxially housed within the pump. Radial ports are formed in a hub of the diffusers that direct fluid pressurized by an impeller to a cavity formed on the shroud of the impeller. Axial ports are formed in the shrouds of the impellers that direct fluid from the cavity to a fluid flow passage within the impeller. Strategic placement and sizing of the radial and axial ports balances thrust forces exerted onto the impeller.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: October 29, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Baojun Song, David Chilcoat
  • Publication number: 20130209225
    Abstract: Durable pumps for abrasives are provided. An example centrifugal pump stage for subsurface operation has a thrust washer located inside the circumference of an outboard clearance seal between an impeller shroud and the diffuser. Relocation of the thrust washer allows the clearance seal to protect the thrust washer from abrasives. A centrifugal action of an outboard seal lip effects a separation of the particles from the fluid nearest the gap of the outboard seal and drives the particles away from the gap of the outboard seal. When an abrasive particle in the leakage flow does clear the outboard seal, the particle is readily flushed across the thrust washer by the leakage flow to the central fluid inlet to prevent wear of the thrust washer. In an implementation, the inside diameter of the thrust washer is approximately flush with the bore of a central fluid inlet of the pump stage.
    Type: Application
    Filed: February 12, 2013
    Publication date: August 15, 2013
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: SCHLUMBERGER TECHNOLOGY CORPORATION
  • Patent number: 8496432
    Abstract: A compressor rotor compresses and delivers compressed air across a turbine rotor. The turbine rotor is connected to the compressor rotor such that rotation of the turbine rotor drives the compressor rotor. A shaft is connected to rotate with the turbine rotor and the compressor rotor. A thrust bearing is provided by a member extending perpendicular and radially outwardly of the shaft. The member rotates with the shaft and faces a first housing wall. A hollow chamber is formed on an opposed side of the first housing wall. A cooling air path supplies air across a thrust bearing surface, and between the member and the first housing wall. The first housing wall has a communication hole for communicating cooling air from the cooling air path into the hollow cavity to drive air within the hollow chamber. Also, a housing incorporating the communication hole is disclosed.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: July 30, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Craig M. Beers, Brent J. Merritt, Victoria S. Richardson
  • Patent number: 8480352
    Abstract: A system controls net thrust of a steam turbine having a stepped rotating shaft. A first leak off line fluidly couples a first stage of a turbine section to a packing upstream of a stepped portion on the rotating shaft. A second leak off line fluidly couples a second stage of the turbine section that is subsequent to the first stage to a step area upstream of the stepped portion, and a connection line fluidly couples the first leak off line to the second leak off line. The lines include control valves such that a controller can actively control the net thrust by regulating thrust pressure on the stepped portion using steam from the first and second stages of the turbine section. The controller may also prevent damage to an active retractable seal using the control valves.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: July 9, 2013
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Bernard Arthur Couture, Jr., Casey William Jones, Binayak Roy
  • Patent number: 8475114
    Abstract: An air cycle machine includes a shaft formed from end sections attached to a center section. The center section includes a first diameter that is supported on bearings within the air cycle machine and a second diameter that forms a part of an interface with a corresponding end section. The second diameter is less than the first diameter and extends an axial distance from an end of the center section and provides for the weld beam to be directed normal to the interface location such that weld quality and manufacturing efficiencies are improved.
    Type: Grant
    Filed: February 8, 2010
    Date of Patent: July 2, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Seth E. Rosen, Craig M. Beers, Robert M. Pragluski, Michael P. Rowley
  • Publication number: 20130121808
    Abstract: A liquid pump, in particular a water pump, comprises a pump housing, which has a thrust bearing seat, a bearing bolt and a bearing mounted on the bearing bolt. In this case, a thrust washer is arranged between the thrust bearing seat of the pump housing and the bearing. Furthermore, a flexible washer is arranged between the thrust bearing seat and the thrust washer.
    Type: Application
    Filed: November 15, 2012
    Publication date: May 16, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventor: ROBERT BOSCH GMBH