Pump Outlet Or Casing Portion Expands In Downstream Direction Patents (Class 415/207)
  • Patent number: 10041377
    Abstract: A system includes a diffuser configured to receive exhaust gas from a turbine. The diffuser includes an outer barrel, an inner barrel, a seal interface, an outer aft plate, an inner aft plate, and poles. An upstream end of the outer barrel includes an upstream lip interfacing with a downstream lip of an outer wall of the turbine outlet, forming a lap joint. The outer barrel includes a plurality of axial segments disposed between the upstream end of the outer barrel and the outer aft plate, and the axial segments. The inner barrel includes a plurality of axial segments disposed between an upstream end of the inner barrel and the seal interface. The seal interface includes a groove configured to receive the inner aft plate. The poles are spaced about the turbine axis and couple an end of the outer aft plate to an end of the inner aft plate.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: August 7, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Deepesh Dinesh Nanda, Robert Jamiołkowski, Robert Jacek Zreda, Eric Yves Bracquemart, Daniel Tomasz Ożga
  • Patent number: 10024337
    Abstract: One describes a rotor (1) for an exhaust-fan assembly (4) of an 5 agricultural machine, the rotor (1) comprising a central shaft (7), a first portion (31) provided with an inlet deflector (15) having a substantially elliptical profile, defining a tapered inlet end (26). The rotor, which is also provided with a set of blades (13), further comprises a second portion (29) provided with an outlet deflector (22) having a substantially elliptical profile, so that the 10 first and the second portions (31, 29) are associated to the central shaft (7). According to the invention, one provides a rotor that promotes efficient cleaning of harvested cane.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: July 17, 2018
    Assignee: Marchesan Implementos e Máquinas Agrícolas Tatu S.A.
    Inventors: Dacio Helene Junior, Valter Palmute
  • Patent number: 9970455
    Abstract: A compressor includes a housing; an impeller rotatably installed in the housing; a guidance unit connected to the housing at a first end of the guidance unit and configured to guide a fluid discharged by the impeller, the guidance unit configured to change a flow direction; and a scrolling unit connected to a second end opposite to the first end of the guidance unit. A width of an opening via which the fluid enters a circular space of the scrolling unit is about 1.5 to about 3.5 times a height of the guidance unit.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: May 15, 2018
    Assignee: HANWHA POWER SYSTEMS CO., LTD.
    Inventors: Jongjae Cho, Yeonhwa Cho, Bonggun Shin, Kangsoo Im
  • Patent number: 9896950
    Abstract: A turbine stator wheel of a gas turbine with a plurality of stator vanes spaced apart around the circumference is provided. Two adjacent stator vanes form a passage each between the suction side of the one stator vane and the pressure side of the other stator vane starting from the vane trailing edge, which includes a constant passage portion in which the passage has a substantially constant passage cross-section. The constant passage portion has an inlet area and an outlet area. Each stator vane forms on the pressure side a rear area that extends, starting from the vane trailing edge adjoining the constant passage portion as far as the inlet area of the passage portion, and on the pressure-side forms a front area that extends upstream of the rear area. Each stator vane has on the pressure side a convex pressure-side contour.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: February 20, 2018
    Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
    Inventors: Lars Willer, Knut Lehmann, Philipp Amtsfeld
  • Patent number: 9835161
    Abstract: A rotary machine includes a guide section formed in an annular flow path in communication with a suction volute at an inner circumferential side of the suction volute, at which a plurality of vanes are installed in a circumferential direction, and configured to guide a fluid introduced from the suction volute, and an impeller connected to the guide section in the axial direction and into which the fluid guided by the guide section is introduced. The suction volute has an annular opening section in communication with the guide section at the inner circumferential side, and an inner wall surface extending from the opening section toward the axial direction of the impeller in the axial direction to increase a width dimension in the axial direction and connected to a partition section at an opposite side of the suction nozzle.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: December 5, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
    Inventors: Jo Masutani, Satoru Yoshida
  • Patent number: 9810238
    Abstract: A turbine assembly includes a turbine housing and a turbine wheel disposed within the turbine housing. The turbine wheel includes a rotational axis and a plurality of blades. The turbine assembly includes a turbine shroud disposed between the turbine housing and the turbine wheel along a radial direction. The turbine shroud is separate from the turbine housing. The turbine shroud includes an annular portion extending generally in an axial direction with respect to the rotational axis and a plate portion intersecting the annular portion to form a convex curved surface. At least a portion of the blades is disposed in at least a portion of the annular portion. Each blade includes a leading edge and a tip portion. Each leading edge is angled with respect to the rotational axis, and each tip portion forms a concave portion that curves around the curved surface of the turbine shroud.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: November 7, 2017
    Assignee: Caterpillar Inc.
    Inventors: Richard E. Annati, Jeffrey W. McCormack, Matthew J. Frick
  • Patent number: 9709062
    Abstract: A centrifugal compressor includes: a volute casing including a first casing and a second casing that are mutually coupled, the first casing including a volute chamber therein and the second casing including an impeller installation space therein; an impeller provided in the impeller installation space so as to be rotatable around a rotation axis; and a vaneless diffuser that has an inlet that communicates with an inside of the second casing and has an outlet that communicates with an inside of the first casing. The vaneless diffuser has a width having a non-axisymmetric distribution in the circumferential direction.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: July 18, 2017
    Assignee: IHI Corporation
    Inventors: Xinqian Zheng, Yun Lin, Yangjun Zhang, Chuanjie Lan, Weilin Zhuge, Tomoki Kawakubo, Hideaki Tamaki
  • Patent number: 9636722
    Abstract: An exhaust fan assembly is provided for expelling contaminated air from a building. The assembly includes a plenum, a fan assembly attached to the plenum, and a windband mounted on top of the fan assembly. The fan assembly is constructed of cylindrical outer and inner walls which define a bearing chamber and surrounding annular space. A fan driven by a shaft extending downward from the bearing chamber draws exhaust air from the plenum and blows it up through the annular space to a nozzle at the top of the fan assembly.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: May 2, 2017
    Assignee: Greenheck Fan Corporation
    Inventors: John William Enzenroth, Terry Lee Hrdina, Kishor Kashinath Khankari, Scott James Koeppel, Edward G. Legner, Timothy Ronald Mathson, Anthony J. Rossi, Michael Glenn Seliger
  • Patent number: 9617914
    Abstract: A system includes a plurality of extraction passages configured to passively extract a portion of a gas flow from a downstream region of a gas flow path. The system includes a plurality of sensors respectively coupled to the plurality of extraction passages, wherein the plurality of sensors is configured to measure one or more parameters of the portion of the gas flow traversing the plurality of extraction passages. The system also includes a manifold coupled to the plurality of extraction passages, wherein the manifold is configured to receive the portion of the gas flow from the plurality of extraction passages. The system further includes a return passage coupled to the manifold, wherein the return passage is configured to passively provide the portion of the gas flow to an upstream region of the gas flow path.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: April 11, 2017
    Assignees: General Electric Company, ExxonMobil Upstream Research Company
    Inventors: Karl Dean Minto, Douglas Frank Beadie
  • Patent number: 9593853
    Abstract: A duct arrangement in a can annular gas turbine engine. The gas turbine engine has a gas delivery structure for delivering gases from a plurality of combustors to an annular chamber that extends circumferentially and is oriented concentric to a gas turbine engine longitudinal axis for delivering the gas flow to a first row of blades A gas flow path is formed by the duct arrangement between a respective combustor and the annular chamber for conveying gases from each combustor to the first row of turbine blades The duct arrangement includes at least one straight section having a centerline that is misaligned with a centerline of the combustor.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: March 14, 2017
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Matthew D. Montgomery, Richard C. Charron, Gary D. Snyder, William W. Pankey, Clinton A. Mayer, Benjamin G. Hettinger
  • Patent number: 9512733
    Abstract: A diffuser-nozzle assembly for mounting at an outlet from a compressor in a turbomachine, the assembly including a nozzle including two substantially cylindrical walls, a radially inner wall and a radially outer wall that are connected together by radial vanes. The walls of the nozzle are extended downstream beyond the radial vanes and the radial spacing therebetween varies downstream from the vanes to be at a minimum substantially in register with the vanes and at a maximum between the vanes.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: December 6, 2016
    Assignee: SNECMA
    Inventors: Jean-Pierre Francois Lombard, Eric Mercier, Francois Pierre Georges Maurice Ribassin
  • Patent number: 9458857
    Abstract: A cooling fan includes a frame and a fan body. A bottom end of the frame forms a pressed portion that borders an air inlet. The pressed portion increases the size of the air inlet allowing more air to flow to better cool an electronic device.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: October 4, 2016
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Chih-Hao Yang, Li-Kan Yeh
  • Patent number: 9284853
    Abstract: A system and method for integrating sections of a turbine are provided. In one system, a turbine includes a last stage bucket section with a first annular outer wall that is angled with respect to a centerline of the turbine at a first angle average. The turbine also includes a diffuser section having a second annular outer wall that is angled with respect to the centerline of the turbine at a second angle average for improving radial swirl. The first angle average is greater than the second angle average.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: March 15, 2016
    Assignee: General Electric Company
    Inventors: Deepesh Dinesh Nanda, Gunnar Leif Siden, Craig Allen Bielek
  • Patent number: 9239166
    Abstract: A diffuser for use in a gas turbine engine, the diffuser having a first wall, a second wall, and a flow separator. The first and second wall define an annular cavity, with the annular cavity having an inlet. The first and second wall also forming a prediffuser that is proximate the inlet, and a dump region distal the inlet. The flow separator extends from the first wall into the annular cavity.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: January 19, 2016
    Assignee: Solar Turbines Incorporated
    Inventors: Timothy James Caron, Peter J. Skyes, Christopher J. Meyer, Federico Liberatore
  • Patent number: 9217368
    Abstract: A method of modifying a gas turbine plant which is provided with a one-shaft gas turbine having a compressor for compressing air, a combustor for generating a combustion gas from the air compressed by the compressor and a fuel, and a one-shaft turbine driven by the combustion gas generated by the combustor and supported by a rotational axis common to the compressor, and an electric generator for generating electric power by driving force of the one-shaft turbine, wherein: the one-shaft turbine is replaced with a two-shaft gas turbine including a compressor for compressing air, a combustor for generating a combustion gas from the air compressed by the compressor and a fuel, and a high-pressure turbine driven by the combustion gas generated by the combustor and supported by a first rotational axis common to the compressor, and a low-pressure turbine driven by the combustion gas used to drive the high-pressure turbine and supported by a second rotational axis, which is different from the axis for the high-pressu
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: December 22, 2015
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Chihiro Myoren, Ryo Akiyama, Shinya Marushima
  • Publication number: 20150147168
    Abstract: An abrasive handling submersible pump assembly diffuser is described. An electric submersible pump assembly stage comprises a rotatable impeller, and a co-axially mounted diffuser comprising a diffuser bowl, the diffuser bowl comprising a plurality of diffuser bowl wedges having a blunted pie-shape, each of the plurality of diffuser bowl wedges protruding axially from a diffuser bowl floor into a cavity between the rotatable impeller and the co-axially mounted diffuser such that each of the plurality of diffuser bowl wedges protrudes into a path of pumped solid-laden fluid, wherein the blunted pie-shaped wedges extend radially between an inner wall and an outer wall of the diffuser bowl and a thickness of the blunted pie-shaped wedges in a circumferential direction increases towards the outer wall.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 28, 2015
    Inventors: Wesley John Nowitzki, Gregory Austin Davis, Steven Andrew Lovell, John Vanderstaay Kenner
  • Patent number: 9033656
    Abstract: An exhaust system for a steam turbine provided with an improved annular flow guide in a high or intermediate turbine. The improved flow guide reduces flow turbulence in an exhaust hood and reduces pressure loss to thereby improve turbine plant efficiency. The shape (vertically symmetric) of a flow guide 5A according to a conventional technology was modified into the shape (vertically asymmetric) of a flow guide 5 such that the length of a downstream flow guide portion 5d is greater than that of a upstream flow guide portion 5u. Numerical analyses were performed to find the optimum flow guide occupation ratio of the conventional technology and the corresponding total pressure loss coefficient. The obtained values were used as reference values. Further, the flow guide occupation ratio of the upstream flow guide portion 5u was set at 0.4 and the flow guide occupation ratio of the downstream flow guide portion 5d was set at 0.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: May 19, 2015
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Shunsuke Mizumi, Koji Ogata, Takeshi Kudo, Noriyo Nishijima, Yoshiaki Onda
  • Publication number: 20150128604
    Abstract: A flow path surface of a gas turbine engine at the location of a bladed component is disclosed in which the flow path surface includes a cylindrical upstream side and a conical downstream side. The bladed component is located at the intersection of the cylindrical upstream side and the conical downstream side. The cylindrical upstream side can extend from a leading edge of the bladed component, or a point upstream of it, to a location between the leading edge and trailing edge of the component. The conical downstream side can extend past the trailing edge of the bladed component. The bladed component can be a fan blade or a compressor blade.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 14, 2015
    Inventors: Bronwyn Power, Roy D. Fulayter, Jonathan M. Rivers
  • Publication number: 20150118015
    Abstract: An exhaust diffuser comprising an inner boundary and an outer boundary forming an annular gas path, and a plurality of strut structures extending radially within the gas path. Each of the strut structures include pressure and suction side walls, and a plurality of radially spaced flow injectors are formed in at least one of the pressure and suction side walls for injecting a fluid flow into the gas path adjacent to the strut structure. At least two fluid supply conduits provide a fluid flow to respective radially spaced flow injectors, and a flow control device is associated with each of the conduits to independently control a fluid flow from a fluid source to each of the radially spaced flow injectors.
    Type: Application
    Filed: October 30, 2013
    Publication date: April 30, 2015
    Inventor: Pawel Matys
  • Publication number: 20150098811
    Abstract: Length adjustable braces (56, 56A-D) attached between a gas turbine exhaust diffuser (40) and an exhaust casing (34) along a horizontal joint (50) between upper and lower halves (40A, 40B) of the outer diffuser shell. Brace lengths are adjusted to align bolt holes (52A, 52B) in respective bolt bosses (43A, 43B) on the upper and lower halves of the shell. The braces may be turnbuckles (56, 67) welded to or releasably attached at one end to the shell and at the other end to the casing. Exemplary fittings on the diffuser shell and casing for the brace ends may be clevis fittings (62) or eye fittings (72). The fittings may be configured to support both tension (58) and compression (59) of each brace. Two opposed fittings (70A, 70B) across the joint may be configured for insertion of a respective clevis bolt (63A, 63C) in both fittings from the same side.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 9, 2015
    Inventors: Douglas R. Roth, Mrinal Munshi
  • Patent number: 8992162
    Abstract: A multi-inlet vacuum pump has a first pump device (10) and a second pump device (12). The first pump device (10) includes a first rotor element (18) having a plurality of first rotor discs (20, 21) arranged consecutively in the delivery direction (36). The second rotor disc includes a second rotor element (26) having a plurality of second rotor discs (28) arranged consecutively in the delivery direction (36). A first fluid flow (34) is suctioned through a main inlet (32) by the first pump device (10) and delivered in the direction of the second pump device (12). A second fluid flow (40) is suctioned through an intermediate inlet (38) by the second pump device and delivered in the direction of a pump outlet. The diameter of the last rotor disc (21) of the first pump (10) substantially corresponds to the diameter of the first rotor (28) of the second pump device (12).
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: March 31, 2015
    Assignee: Oerlikon Leybold Vacuum GmbH
    Inventors: Markus Henry, Heinz Englaender, Christian Beyer
  • Patent number: 8979474
    Abstract: A water pump (30) includes an impeller chamber (32) formed in a housing (31), a swirl chamber (40) formed in the housing (31) to communicate with a coolant passage (8) and the impeller chamber (32), and an impeller (33) that is supported to be free to rotate in the impeller chamber (32) and rotates in conjunction with an engine (2) so as to take in a coolant and discharge the coolant into the coolant passage (8) via the swirl chamber (40). The swirl chamber (40) is formed to be divided into a first swirl chamber (41) that communicates with the coolant passage (8) at all times, and a second swirl chamber (42) and a third swirl chamber (43) respectively connected to the coolant passage (8) via thermostats (S1, S2) respectively having switch valves that can be opened and closed. The thermostats (S1, S2) are operated to open and close, thereby connecting and cutting off the swirl chambers (42, 43) and the coolant passage (8), in accordance with a temperature of the coolant.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: March 17, 2015
    Assignee: TBK Co., Ltd.
    Inventor: Takeshi Hoji
  • Publication number: 20150063995
    Abstract: Aircraft, air conditioning systems, and air diffusers that may be used to create a quiet, comfortable environment within an aircraft cabin are disclosed. The systems and apparatuses are configured to flow air at a rate that meets and/or exceeds the FAA minimum requirement of 0.55 lbs/min (about 250 g/min) per occupant. In use, even at higher flow rates, the systems and apparatuses are configured to create a quiet cabin experience, by contributing little to ambient cabin noise. Thus, the systems and apparatuses may be used to provide fresh air at a comfortable rate and a comfortable noise level.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 5, 2015
    Applicant: The Boeing Company
    Inventors: Manuel F. RIVERA, Herbert Louis Hoffman, Matthew Trudeau
  • Publication number: 20150063996
    Abstract: A system includes at least one inducer including a flow passage configured to guide a fluid flow into a cavity defined by a casing and rotor of a gas turbine engine, the flow passage includes an inlet configured to receive the fluid flow from a compressor diffuser of the gas turbine engine, and an outlet configured to discharge the fluid flow into the cavity. The at least one inducer is configured to be disposed within the gas turbine engine so that the second outlet is axially disposed forward of a diffuser outlet of the compressor diffuser.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 5, 2015
    Applicant: General Electric Company
    Inventor: Matthew Stephen Casavant
  • Patent number: 8967967
    Abstract: The present disclosure relates to a propfan engine comprising: one or more rotor stages comprising a plurality of rotors; and an outer wall comprising an outer profile, at least a portion of the outer profile defining a substantially circular cross-section, wherein the diameter of the substantially circular cross-section increases in the direction of flow over the outer wall and downstream of a leading edge of the rotors, and the diameter increases at substantially all points defining the circumference of the substantially circular cross-section.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: March 3, 2015
    Assignee: Rolls-Royce PLC
    Inventors: Richard G. Stretton, Nicholas Howarth
  • Patent number: 8961124
    Abstract: An axial fan is provided. The axial fan includes a hub, an impeller having a plurality of blades mounted on an outer peripheral surface of the hub, and a housing surrounding the impeller. Each of the blades has a front edge angle (?) within a range of ?8° to ?20°, a mounting angle (?) within a range of 36° to 50°, and a twisted angle (?) within a range of 10°±2°.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: February 24, 2015
    Assignee: Minebea Co., Ltd.
    Inventors: Takako Fukuda, Masaki Ogushi, Yoichi Kawai, Naoya Ohki
  • Patent number: 8961121
    Abstract: A casing of a centrifugal fan includes a suction port forming wall portion, an opposed wall portion opposed to the suction port forming wall portion, and a sidewall portion connecting the suction port forming wall portion and the opposed wall portion. A tongue portion is provided at the sidewall portion. The tongue portion projects into an air passage in the vicinity of a discharge port to form a narrowed air passage portion within the air passage. A leading end surface of the tongue portion is shaped such that the width of the leading end surface increases from the suction port forming wall portion, where the suction port is formed, to the opposed wall portion. The tongue portion is shaped such that the projecting length of the tongue portion into the air passage continuously decreases from the suction port forming wall portion to the opposed wall portion.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: February 24, 2015
    Assignee: Sanyo Denki Co., Ltd.
    Inventors: Kevin Yen, Jiro Watanabe, Hiromitsu Kuribayashi, Shigekazu Mitomo
  • Publication number: 20150044017
    Abstract: Embodiments of the invention relate generally to turbomachines and, more particularly, to the positioning of airfoils to reduce pressure variations entering a diffuser. One embodiment includes a turbomachine comprising a diffuser, a plurality of airfoil rows, including a first airfoil row adjacent the diffuser, the first airfoil row being of a first type selected from a group consisting of stationary vanes and rotating blades, a second airfoil row adjacent the first airfoil row, the second airfoil row being of a second type different from the first type, and a third airfoil row of the first type adjacent the second airfoil row, wherein at least one of the plurality of airfoil rows is clocked, relative to another airfoil row of the turbomachine, reducing variations in airflow circumferential pressure at at least one spanwise location in the diffuser adjacent the first airfoil row in an operative state of the turbomachine.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 12, 2015
    Applicant: General Electric Company
    Inventor: Paul Kendall Smith
  • Publication number: 20150044039
    Abstract: Manufacture of an arcuate diffuser shell (38A/38B) assembled from an axially forward portion (38A) and an axially aft portion (38B), the two portions welded to respective sides of an arcuate flange (58A) via two respective pairs of circumferential welds (70A/70B and 72A/72B or 80/84 and 82/86 or 80/88 and 82/90). Each pair of welds comprises first and second welds on opposed surfaces (58, 74) of the shell. The first and second welds compensate each other with respect to welding process shrinkage, eliminating weld warping (68) of the shell. The first and second welds may have equal cross sectional areas or equal masses over a circumferential span of the flange.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 12, 2015
    Inventors: Yevgeniy Shteyman, Matthew R. Porter, Mrinal Munshi, Douglas R. Roth, Timothy J. Stewart, JR.
  • Patent number: 8939719
    Abstract: A centrifugal pump includes a motor having an output shaft, a volute mounted at one side of the motor and an impeller which is located inside the volute and attached to the output shaft. The volute has an inlet arranged along the axial direction, an oulet arranged along the lateral direction and a flow channel arranged along the circumferential direction. The flow channel has a spiral shape. The cross-sectional area of the flow channel increases towards the outlet.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: January 27, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Ying Juan Wan, Long Hing Tang
  • Publication number: 20150023787
    Abstract: A diffuser for an air cycle machine defines airflow both to a compressor rotor from the inlet and from the compressor rotor through a plurality of vanes that define radially extending airflow passages. The size and shape of both the inlet and the vanes of the diffuser define and tailor the character of airflow presented to and leaving the compressor rotor to provide a desired change in air flow.
    Type: Application
    Filed: October 6, 2014
    Publication date: January 22, 2015
    Inventors: Brent J. Merritt, Harold W. Hipsky
  • Publication number: 20150016982
    Abstract: An exhaust diffuser for a gas turbine includes an annular duct. A row of struts is arranged in the duct. In a region downstream of the trailing edges of the struts, the cross-sectional area of the duct decreases to a local minimum and then increases again towards the outlet end of the duct. Thereby the gas flow is locally accelerated downstream of the struts. This stabilizes the boundary layer of the flow in this region and leads to a marked increase in pressure recovery for a wide range of operating conditions.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 15, 2015
    Inventors: Willy Heinz Hofmann, Philipp Schaefer
  • Publication number: 20140369826
    Abstract: A Vertical-Axis Double-Ducted Vortex-Diffuser-Augmented Wind Turbine comprises an apparatus further comprising a large, hollow, cylindrical tower with external fixed, wind concentrating cowlings and internal hinged, wind inlet vanes. The cowlings are large curved sections that extend outward from the cylindrical tower and perform two functions: 1) capture the wind, entraining it into a tower's core on an upwind side of the tower; and 2) shade a downwind side of the cylindrical tower from the wind, creating a negative pressure on downwind inlet vanes. The inlet vanes extend into the tower's cylindrical core, automatically opening to allow the wind to enter on the upwind side of the tower and automatically close on the downwind side of the cylindrical tower. By working together the external cowlings and internal inlet vanes enable the cylindrical tower to capture and entrain the wind stream into a contained tornado-like vortex.
    Type: Application
    Filed: October 8, 2013
    Publication date: December 18, 2014
    Inventors: Steven Rohring, Raymond F. Ellis
  • Publication number: 20140369827
    Abstract: A rotor for a double-flow turbomachine is provided, wherein the first flow and the second flow have several rows of rotor blades, wherein at least one row of rotor blades is different from the corresponding row of rotor blades of the other flow.
    Type: Application
    Filed: November 8, 2012
    Publication date: December 18, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Benjamin Kumm, Norbert Surken, Xiaoping Zhou
  • Publication number: 20140356124
    Abstract: A compressor for pressurizing a flow of air within an aircraft including an inlet providing the flow of air to the compressor. An outlet provides the flow of air, after pressurization by the compressor, to a chamber of the aircraft. A diffuser assembly is disposed between the inlet and the outlet. The diffuser assembly includes one or more vanes at least partially impeding the flow of air through the diffuser assembly. A backing plate is included having a surface adjacent to the one or more vanes. The surface includes a relief feature that enables air to bypass the one or more vanes. The relief feature has an axial depth of about 0.25% to 2.5% of a width of a flow path through the diffuser assembly or of about 0.5% to 5% of a thickness of a flange of the backing plate. A method of operating a compressor is also included.
    Type: Application
    Filed: June 4, 2013
    Publication date: December 4, 2014
    Inventors: David A. Dorman, Harold W. Hipsky, Peter A. Wierzbowski, Eric Chrabascz, Brian Cabello
  • Publication number: 20140348647
    Abstract: An exhaust diffuser for a gas turbine engine includes a diffuser inlet, a diffuser exit, an inner diffuser wall, and an outer diffuser wall. The inner diffuser wall may include a first tubular member with a flared downstream portion. The outer diffuser wall may include a second tubular member at least partially about the inner diffuser wall and with a second flared downstream portion. The outer diffuser wall and the inner diffuser wall extend between the diffuser inlet and the diffuser exit, and form a diffusing flowpath therebetween. The second flared downstream portion may include a lower section and an upper section, with the upper section extending further downstream in an axial direction than the lower section, relative to the diffuser axis.
    Type: Application
    Filed: May 24, 2013
    Publication date: November 27, 2014
    Applicant: SOLAR TURBINES INCORPORATED
    Inventors: Ulrich Edmund Stang, Hans D. Hamm
  • Publication number: 20140341728
    Abstract: The invention provides an angular diffuser sector (16) for a turbine engine compressor, the sector comprising an inner shroud (20), an outer shroud (22), at least one vane (24), a casing element (36?) mounted at least in part around one of the shrouds and having an open groove (42) facing an axial end of the corresponding shroud, a wedge-forming fitting (44) interposed between the casing element and the corresponding shroud, the wedge presenting a first surface (46) for coming into contact with a bearing surface (22a) of the axial end of the corresponding shroud, and a second surface (48) that is inclined relative to the first surface and that is to come into contact with a corresponding sloping surface (50) of the groove in the casing element, and means (52) for exerting an axial force on the wedge so as to keep its first surface in contact with the bearing surface and its bearing surface in contact with the sloping surface of the groove in the casing element.
    Type: Application
    Filed: January 11, 2013
    Publication date: November 20, 2014
    Applicant: SNECMA
    Inventors: Yvon Cloarec, Laurent Gilles Dezouche
  • Publication number: 20140321988
    Abstract: This disclosure describes improvements that can expand the operating envelope of a compressor device. These improvements implement devices that vary flow parameters of a working fluid at the exit of the compressor device. In one embodiment, the device utilizes a nozzle that installs into the discharge opening on a volute of a centrifugal compressor. Actuation of the nozzle modifies a flow area through which the working fluid exits the centrifugal compressor. The change in the flow area increases the velocity of the working fluid, without the need to change the operating speed and/or other operating parameters of the centrifugal compressor.
    Type: Application
    Filed: April 29, 2013
    Publication date: October 30, 2014
    Inventor: Dale Eugene Husted
  • Patent number: 8870532
    Abstract: The present application provides a diffuser for an exhaust hood of a steam turbine. The diffuser may include a first end adjacent to a last bucket and a second end downstream of a steam guide and adjacent to a bearing cone. An exhaust flow path extends therethrough. The second end may include an axial extension enlarging the exhaust flow path.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: October 28, 2014
    Assignee: General Electric Company
    Inventors: Sudhakar Neeli, Joshy John
  • Publication number: 20140298771
    Abstract: A gas turbine exhaust diffuser includes a frustoconical portion that defines an interior surface and an axial centerline. In particular embodiments, the interior surface may have a slope greater than 6 degrees, 10 degrees, or 20 degrees with respect to the axial centerline to define an axial cross-sectional area of at least 200 square feet, 240 square feet, or 260 square feet. In other particular embodiments, the interior surface may have an axial length of less than 25 feet or less than 10 feet. A helical turbulator on the interior surface of the frustoconical portion may reduce flow separation between exhaust gases and the interior surface to enhance recovery of potential energy from the exhaust gases.
    Type: Application
    Filed: April 3, 2013
    Publication date: October 9, 2014
    Applicant: General Electric Company
    Inventors: Hua Zhang, Douglas Scott Byrd, Laxmikant Merchant, Valery Ivanovich Ponyavin
  • Patent number: 8844773
    Abstract: A booster pump for a coffee beverage dispenser's water inlet source, in one example, a “city water” inlet. A chamber is formed which has the diluent/water inlet and a bottom surface and a top end covered by a removable lid. The removable lid has a hole large enough for a motor to be partially seated within the chamber and the motor has a shaft with supports that is connected to a cover plate that has through holes, and a rotor below the cover plate with a set of radially oriented vanes. The hole in the lid is bigger than the cross section of the cover plate and so the motor, shaft, supports, rotors and cover plate can be pulled out as desired for easier maintenance. When the motor is seated properly in the hole of the lid, the cover plate seats properly along the edge of a cylindrically shaped pump cavity. The cover plate and the edge form a seal. The inlet for the pump cavity has a smaller cross section than its outlet and the pump cavity can have a deflection body.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: September 30, 2014
    Assignee: Bravilor Holding B.V.
    Inventor: Maximiliaan Noordanus
  • Publication number: 20140271168
    Abstract: The present application provides a radial diffuser exhaust system for use with a gas turbine engine. The radial diffuser exhaust system may include a radial diffuser positioned within an asymmetric exhaust collector. The asymmetric exhaust collector may include a closed end chamber and an exhaust end chamber. The closed end chamber may have a first size, the exhaust end chamber may have a second size, and the first size may be smaller than the second size.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: General Electric Company
    Inventor: General Electric Company
  • 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: 20140271121
    Abstract: A gas turbine engine includes an intercooled twin centrifugal compressor. A pipe diffuser extends from the intercooled twin centrifugal compressor into an airflow path.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: United Technologies Corporation
    Inventor: Daniel B. Kupratis
  • Publication number: 20140248142
    Abstract: A gas turbine engine includes a compressor assembly that is rotationally coupled to a shaft, the compressor assembly having a centrifugal impeller and a shroud covering a bladed portion of the centrifugal impeller. The compressor assembly includes a diffuser that is attached to the shroud via a pair of flanges, the diffuser including a strut that is mounted through an aft-extending leg to a base of an intercase. A sealing assembly is attached to the diffuser and is attachable to a transition duct that is positioned to receive air from the diffuser. The sealing assembly is configured to prevent air from passing through the sealing assembly while allowing relative motion to occur between the transition duct and the diffuser.
    Type: Application
    Filed: December 20, 2013
    Publication date: September 4, 2014
    Applicants: Rolls-Royce PLC, Rolls-Royce North American Technologies, Inc.
    Inventors: Robert A. Ress, JR., Andrew Swift
  • Publication number: 20140241870
    Abstract: Disclosed are a diffuser and a pump including a feed column extending around a diffusor axis of the pump and having a rotor housing which is arranged between an intake and a diffusor arranged in a diffusor section. During operation, fluid is sucked by the pump rotor via the intake, and is discharged from the feed column via the diffusor section, the feed tube and the outlet stub. The diffusor includes an inlet section arranged between an outlet section and the pump rotor, wherein a first part section adjacent to the inlet section is formed at the outlet section, the first part section is inclined with respect to the diffusor axis at a first angle (?). A second part section adjoining the first part section is inclined with respect to the diffusor axis at a second angle (?) different from the first outlet angle (?).
    Type: Application
    Filed: February 20, 2014
    Publication date: August 28, 2014
    Applicant: Sulzer Pumpen AG
    Inventor: Adalberto Dominguez
  • Publication number: 20140227092
    Abstract: An example wind turbine diffuser has an expanded outlet area where the diffuser outlet area is greater than it's cross sectional area. The diffuser may be formed of one or more diffuser rings, at least one of which may form a turbine cowling. Each diffuser ring may have an inlet area that is smaller than the outlet area of the directly upstream ring. The portion of an upstream ring outlet which is not occluded by the downstream ring may form a diffuser outlet such that the total outlet area of the diffuser is larger than the cross-sectional area. In another example, the diffuser may comprise at least one diffuser ring and one or more suction slots that are each connected to a vent, which allows air to be removed from the diffuser system.
    Type: Application
    Filed: April 5, 2012
    Publication date: August 14, 2014
    Applicant: Anakata Wind Power Resources s.a.r.l
    Inventor: Ben David Wood
  • Publication number: 20140212281
    Abstract: A feed diffuser is disclosed. The diffuser may comprise a base disposed orthogonal to a flow, a body extending from the base toward the flow, and an apex provided at a termination of the body in a direction toward the flow. The body may decrease in cross-sectional area from the base to the apex.
    Type: Application
    Filed: December 19, 2012
    Publication date: July 31, 2014
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventor: United Technologies Corporation
  • Publication number: 20140205448
    Abstract: An exhaust diffuser and method for manufacturing an exhaust diffuser is provided. An exhaust diffuser for a torque-generating turbine, in particular a torque-generating gas turbine is provided herein. The exhaust diffuser having an inner member, the inner member having an outer surface and an outer member having an inner surface, the inner member and the outer member forming an annular channel, at least a first supporting strut connecting the inner member and the outer member, the first supporting strut extending essentially radially from the inner surface to the outer surface, the first supporting strut having a middle section having a first airfoil and an outer section having a second airfoil, and the second airfoil differing from the first airfoil in shape to be able to handle a higher range of angle of attack. Furthermore, it is described a method for manufacturing an exhaust diffuser.
    Type: Application
    Filed: August 1, 2012
    Publication date: July 24, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Li Shing Wong
  • Patent number: 8783663
    Abstract: Humidifying apparatus includes a humidifier for emitting moist air into an external environment, and a fan assembly for generating an air current within the external environment for conveying the emitted moist air away from the humidifier. The fan assembly includes a device for creating an air flow and a nozzle including an interior passage for receiving the air flow and a mouth for emitting the air flow. The humidifier is located behind nozzle, the nozzle extending about and defining an opening through which both air from outside the nozzle and the moist air emitted from the humidifier are drawn by the air flow emitted from the mouth.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: July 22, 2014
    Assignee: Dyson Technology Limited
    Inventors: Nicholas Gerald Fitton, John Scott Sutton, Peter David Gammack, James Dyson