Plural Serially Arranged Whirlers For Same Or For Mixed Fluids Patents (Class 239/402)
  • Patent number: 10208958
    Abstract: A method and apparatus are disclosed for mixing H2-rich fuels with air in a gas turbine combustion system, wherein a first stream of burner air and a second stream of a H2-rich fuel are provided. All of the fuel is premixed with a portion of the burner air to produce a pre-premixed fuel/air mixture. This pre-premixed fuel/air mixture is injected into the main burner air stream.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: February 19, 2019
    Assignee: ANSALDO ENERGIA SWITZERLAND AG
    Inventors: Richard Carroni, Fernando Biagioli
  • Patent number: 10132499
    Abstract: A fuel injection device for supplying a fuel to a compressed air includes: a pilot fuel injector; a main fuel injector located at an outer periphery of the pilot fuel injector; and an air injection unit located between an outlet end portion of the pilot fuel injector and the main fuel injector. The air injection unit includes: a partition wall plate separating the air injection unit from a combustion chamber; a flame stabilization plate provided at a downstream side of the partition wall plate; a first opening at a downstream side between the flame stabilization plate and the outlet end portion of the pilot fuel injector; and a second opening provided in the partition wall plate and through which the compressed air is supplied. The flame stabilization plate includes an inclined portion inclined in a radially outward and downstream direction with respect to an axis.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: November 20, 2018
    Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Ryusuke Matsuyama, Masayoshi Kobayashi, Atsushi Horikawa, Hitoshi Fujiwara
  • Patent number: 9776203
    Abstract: A dispensing apparatus simultaneous discharges at least two flowable components of a multi-component mass from different storage volumes. The dispensing apparatus includes a passive mixing unit having a central mixing passage extending along a flow direction and being configured to guide the components mixed with one another, and including at least two inlets opening into the central mixing passage, the inlets being associated with the same storage volume and open into the mixing passage at different positions along the flow direction.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: October 3, 2017
    Assignee: SULZER MIXPAC AG
    Inventor: Josef Ettlin
  • Patent number: 9464810
    Abstract: The burner includes a swirl chamber. The swirl chamber has a substantially conical shape defining a central axis. The swirl chamber is defined by a plurality of wall elements. A combination of nozzles at the pressure, suction side and trailing edge of the wall element are placed for fuel injection. The wall elements define slots between each other. The slots have different widths (w) in consecutive planes in the axial direction, wherein said planes are perpendicular to the central axis.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: October 11, 2016
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Franklin Marie Genin, Marcel Rieker, Stefano Bernero, Bettina Paikert, Ewald Freitag
  • Patent number: 9366432
    Abstract: A multistaged lean prevaporizing premixing fuel injector apparatus is provided. The fuel injector may be utilized with a turbogenerator. Preheated combustion air from the turbogenerator's recuperator may be utilized by the fuel injector to prevaporize liquid fuel. The injector may provide for premixing of multiple fuel streams and include multiple stages with a flow distributor plate separating adjacent stages. The injector may include multiple stages, with a pilot tube located in a final stage splitting the fuel stream into a premixed pilot stream and a premixed final fuel and air mixture stream.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: June 14, 2016
    Assignee: Capstone Turbine Corporation
    Inventors: Mark G. Mitchell, Junhua Chen
  • Patent number: 9168545
    Abstract: An internal mix air atomizing spray nozzle assembly having a nozzle body that defines a central liquid flow passage, an air guide for directing pressurized air within the nozzle, and a downstream air cap having an upstanding impingement post and a plurality of discharge orifice defining passages about the impingement post. The air cap passages each are oriented at compound angle with respect to a central axis for discharging atomized liquid flow streams in a conical spray pattern swirling in a predetermined rotative direction about the central axis, and the impingement post has a diffuser cap that defines a flat central liquid impingement surface and an outer annular array of non radial diffuser veins for directing the atomized liquid and pressurized air in a swirling fashion about the impingement post in the same relative direction as the swirling spray pattern from the air cap passages.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: October 27, 2015
    Assignee: Spraying Systems Co.
    Inventors: Daniel Vidusek, Bandish Patel
  • Publication number: 20140157781
    Abstract: A gas turbine engine lean burn fuel injector includes a fuel injector head which has a first air swirler, a second air swirler arranged around the first air swirler, a pilot fuel injector arranged radially between the first air swirler and the second air swirler. A third air swirler arranged around the second air swirler, a fourth air swirler arranged around the third air swirler and a main fuel injector arranged radially between the third air swirler and the fourth air swirler. A shroud is arranged around the fourth air swirler. A downstream end of the shroud is generally circular in cross-section in a plane perpendicular to the axis (Y) of the fuel injector head and an upstream end of the shroud is generally elliptical in cross-section in a plane perpendicular to the axis (Y) of the fuel injector head.
    Type: Application
    Filed: November 26, 2013
    Publication date: June 12, 2014
    Applicant: Rolls-Royce PLC
    Inventors: Anthony John MORAN, Christopher Luke FORD, Jonathan Frederick CARROTTE, Alastair Duncan WALKER
  • Patent number: 8640463
    Abstract: A swirler for fuel injection in a gas turbine engine includes a frustoconical swirler body. A first and a second air flow path direct air in generally opposed circumferential directions into the swirler. These air paths intermix and create turbulence. As this turbulence encounters fuel droplets, the fuel is atomized, and uniformly distributed within the air flow. A shear layer is created adjacent an inner surface of the swirler body. In a separate feature, a third air flow path is directed into the air.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: February 4, 2014
    Assignee: United Technologies Corporation
    Inventor: Albert K. Cheung
  • Patent number: 8579211
    Abstract: A nozzle includes a center body that defines an axial centerline and a shroud circumferentially surrounding at least a portion of the center body to define an annular passage between the center body and the shroud. A plurality of vanes between the center body and the shroud comprise a radially outward portion separated from the shroud. A method for enhancing flow through a nozzle includes flowing a fuel through a center body and flowing a fluid stream across a vane located between the center body and a shroud surrounding at least a portion of the center body. The method further includes flowing the fluid stream between a radially outward portion of the vane and the shroud, wherein the radially outward portion of the vane is separated from the shroud.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: November 12, 2013
    Assignee: General Electric Company
    Inventors: Mahesh Bathina, Willy Steve Ziminsky
  • Patent number: 8429914
    Abstract: A fuel injection system is provided for a gas turbine, comprising a mains airblast fuel injector having an annular shape, and inner and outer mains swirlers for swirling air past the mains airblast fuel injector. The inner and outer mains swirlers are concentric with the mains airblast fuel injector and are located radially inwardly and radially outwardly of the mains airblast fuel injector, respectively. The mains airblast fuel injector and the inner and outer mains swirlers are so arranged as to produce a fuel spray stream which expands from the mains airblast fuel injector and has a double flame front. The double flame front comprises flame fronts on both the radially inner and radially outer surfaces of the fuel spray stream.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: April 30, 2013
    Assignee: Rolls-Royce PLC
    Inventors: Sara Gashi, Nickolaos Pilatis
  • Patent number: 8109231
    Abstract: The invention pertains to a lining device that can be pulled through a pipe having an approximate diameter between 1 and 36 inches. The device sprays an electrically charged lining mixture 360° onto the inside pipe surface. The lining mixture is electro-statically charged to facilitate full encapsulation and adhesion to all pipe wall surfaces in a circumferentially uniform thickness. The lining device can be contained in a multipart housing having flexible rod-like components that hold the device in the center of the longitudinal axis of the pipe. The lining mixture is conveyed to the device through heated non expanding hose. The non expanding properties facilitate the delivery of the lining under pressure to the device. The device also incorporates a dwell cone having a knurled edge that atomizes the lining mixture as it is centrifugally thrown onto the pipe wall. The device may further incorporate nitrogen in mixing the lining material.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: February 7, 2012
    Inventors: Kent Weisenberg, Dudley Primeaux, II
  • Patent number: 8033114
    Abstract: A fuel injector including a peripheral atomisation system having a plurality of fuel ejection orifices distributed at regular intervals along the circumference and an annular air eddy deflector. The deflector includes air ejection channels such that, for each fuel ejection axis defined by an ejection orifice, there is a corresponding air ejection channel of which at least the radially most internal part has a median substantially intersecting this fuel ejection axis.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: October 11, 2011
    Assignee: SNECMA
    Inventors: Didier Hippolyte Hernandez, Thomas Olivier Marie Noel
  • Patent number: 7997450
    Abstract: The multicomponent cartridge has a container with chambers for the reception of different fluid components, a mixer element fixed on the container for the mixing of the components and a dispensing tube placed onto the mixer element and connected to the container for the dispensing of the mixed components. The mixer element is configured as a guide element for the axial displacement of the dispensing tube between an open position for dispensing of the mixed components and a closed position.
    Type: Grant
    Filed: September 10, 2007
    Date of Patent: August 16, 2011
    Assignee: Sulzer Mixpac AG
    Inventors: Rolf Heusser, Andreas Staub
  • Publication number: 20100308135
    Abstract: A main swirler of a triple annular configuration that is partitioned by a pre-filmer and a separator is installed in an inlet port of a main air flow channel. The vicinity of the inner wall of the main air flow channel provided with a main fuel injection port is bulged radially outward from the innermost surface (innermost surface of a small swirler) of a main swirler. Further, a distance from the main fuel injection port and the pre-filmer is set such that an effective opening area between the pre-filmer and “the inner wall of the main air flow channel provided with the main fuel injection port” is equal to an effective opening area of the small swirler. The swirling directions of the swirlers of the main swirler are “clockwise”-“counter-clockwise”-“clockwise” respectively along the radial outward direction when the swirling direction of the innermost swirler is taken as “clockwise”.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 9, 2010
    Applicant: JAPAN AEROSPACE EXPLORATION AGENCY
    Inventors: Takeshi Yamamoto, Kazuo Shimodaira, Kazuaki Matsuura, Yoji Kurosawa, Seiji Yoshida
  • Patent number: 7320440
    Abstract: A spray device, useful for example as a fuel nozzle for gas turbine engines, comprises a body having a bore and a cap member having an orifice, the body and cap member in combination defining a chamber. Fluid passages introduce pressurized liquid into the chamber and direct a flow into the bore, thereby causing a spinning flow to be forced out through the orifice.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: January 22, 2008
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lev Alexander Prociw, Joseph Horace Brand
  • Patent number: 7249721
    Abstract: The present invention relates to a device for injecting a liquid fuel into a pressurized air flow (7), in particular for a combustion chamber, comprising a hollow cylindrical body (10) of longitudinal axis (YY?) delimiting a substantially cylindrical central volume (11), fluid veins (12) substantially radial in relation to the longitudinal axis of body (10) and arranged on the periphery of said body to allow passage of said flow, and axial fuel injection pipes (5) arranged inside said fluid veins and connected to at least one fuel inlet (3) by at least one supply point (16). According to the invention, pipes (5) are pierced with openings (9) that open onto central volume (11) of said body (10) and which are oriented substantially in the direction of the flow in fluid veins (12).
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: July 31, 2007
    Assignees: Institut Francais du Petrole, Turbomeca
    Inventors: Tidjani Niass, Gérard Martin, Etienne Lebas, Guy Grienche, Gérard Schott, Hubert Verdier
  • Patent number: 7124833
    Abstract: This invention relates to an improved portable system for the delivery of a breathable, fire extinguishing gas mixture to a fire zone. The gas mixture comprises a normally gaseous inert material, such as nitrogen, helium or argon; an oxygen containing gas; and carbon dioxide. The system includes a means for storing or generating the inert material, means for storing the carbon dioxide, means for generating or introducing the oxygen containing gas, and means for mixing the components. The system also includes means for heating, vaporizing and controlling the temperature and proportions of the components.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: October 24, 2006
    Inventor: Joseph Germano Sant'Angelo
  • Patent number: 6969012
    Abstract: An atomizer for difficult to disperse solutions such as sizing and paper coatings comprising three nozzles defining three channels respectively two of the nozzles comprising fluid-emitting nozzles and the third nozzle comprising a treatment-emitting nozzle. Alternatively, the atomizer comprises two channels respectively comprising a fluid-emitting nozzle and a treatment emitting nozzle.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: November 29, 2005
    Inventors: Martti Y. O. Kangas, Manfred Diebel
  • Patent number: 6733278
    Abstract: As with most burners and combustors, they utilize fuel and air mixtures. One of the important aspects of burning an air-fuel mixture is that of mixing. Ideally, the fuel should be uniformly distributed throughout the air when ignited. This results in the most complete burn, maximizing beat generation while minimizing unburned and incomplete-combustion products. This disclosure describes an apparatus for enhancing mixing of fuel and air. Combustion air is given a prerotation by passing it through a set of fins before the fuel is injected into the air. Then the mixture is passed through another set of fins, rotating the mixture in a direction opposite that which the air experienced, first.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: May 11, 2004
    Inventor: David P. Welden
  • Patent number: 6637673
    Abstract: A liquid atomizer comprising a housing fitted with an inlet for connecting to a liquid supply line and a cavity being in flow communication with the inlet and having a longitudinal axis. The housing has one or more outlet nozzles for emitting atomized liquid. A vortex generating member is received within the housing and is formed with at lest one vortex generating path generates a liquid vortex about an axis transversally extending relative to the longitudinal axis of the housing and extending opposite a respective outlet nozzle. Each of the vortex generating paths is in flow communication with the cavity and extends opposite a respective outlet nozzle.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: October 28, 2003
    Inventors: Yoel Zur, Gandin Vitaly, Zohar Katzman, David De Vires
  • Patent number: 6550696
    Abstract: An atomizing injector includes a metering set having a swirl chamber, a spray orifice and one or more feed slots etched in a thin plate. The swirl chamber is etched in a first side of the plate and the spray orifice is etched through a second side to the center of the swirl chamber. Fuel feed slots extend non-radially to the swirl chamber. The injector also includes integral swirler structure. The swirler structure includes a cylindrical air swirler passage, also shaped by etching, through at least one other thin plate. The cylindrical air swirler passage is located in co-axial relation to the spray orifice of the plate of the fuel metering set such that fuel directed through the spray orifice passes through the air swirler passage and swirling air is imparted to the fuel such that the fuel has a swirling component of motion. At least one air feed slot is provided in fluid communication with the air swirler passage and extends in non-radial relation thereto.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: April 22, 2003
    Inventors: Adel B. Mansour, Rex J. Harvey, Robert R. Tacina, Peter Laing
  • Patent number: 6502400
    Abstract: A combustor dome assembly includes a spectacle plate having an opening formed therein that defines an inner circumferential edge, at least one swirler assembly defining an inner cylindrical surface, and at least one deflector having an outer cylindrical surface. These components are arranged such that the outer cylindrical surface is joined to the inner circumferential edge and to the inner cylindrical surface. One preferred method of manufacturing the combustor dome assembly includes placing a first ring of joining material over the outer cylindrical surface. Then, the outer cylindrical surface is inserted into the spectacle plate opening so that the first ring is sandwiched between a first surface of the spectacle plate and a shoulder formed on the deflector. A second ring of joining material is next placed over the outer cylindrical surface, and a third ring of joining material is inserted into an annular groove formed in the inner cylindrical surface.
    Type: Grant
    Filed: May 20, 2000
    Date of Patent: January 7, 2003
    Assignee: General Electric Company
    Inventors: Max Joseph Freidauer, Michael Philip Hagle
  • Patent number: 6428200
    Abstract: The static laminar mixing device for mixing media of widely different viscosities has two mixers of different cross-sections arranged one after the other with the cross-section of the first mixer being smaller than the second mixer. An admixing device for metering additive of lower viscosity than the medium of the main flow is also provided. This admixing device has a plate which defines a converging orifice for passage of the main flow and additive therethrough into the first mixer while a nozzle is aligned with the orifice for adding the additive flow.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 6, 2002
    Assignee: Sulzer Brothers Limited
    Inventors: Markus Fleischli, Felix Streiff, Andreas Walder
  • Patent number: 6419386
    Abstract: The static laminar mixing device for mixing media of widely different viscosities has two mixers of different cross-sections arranged one after the other with the cross-section of the first mixer being smaller than the second mixer. An admixing device for metering additive of lower viscosity than the medium of the main flow is also provided. This admixing device has a plate which defines a converging orifice for passage of the main flow and additive therethrough into the first mixer while a nozzle is aligned with the orifice for adding the additive flow.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: July 16, 2002
    Assignee: Sulzer Brothers Limited
    Inventors: Markus Fleischli, Felix Streiff, Andreas Walder
  • Patent number: 6311473
    Abstract: A combustion system includes a combustion chamber and a fuel injection apparatus, where a radial inflow swirler stage in the injector housing includes a plurality of radial inflow swirlers spaced longitudinally from each other to direct air radially inward in a swirling motion to cause fuel streams to swirl and thoroughly mix with air before passing into the combustion chamber. A plurality of liquid fuel nozzles are supported in the housing in an annular arrangement to dispense liquid fuel in a plurality of sprays in the downstream direction. A plurality of gaseous fuel nozzles are also provided in the housing supported in an annular arrangement intermediate the liquid fuel nozzles. The plurality of gaseous fuel nozzles include a series of nozzles arranged in radial spokes between each of the liquid fuel nozzles, with the size of the openings in the gaseous fuel nozzles increasing in the radially outer direction from the longitudinal axis of the housing.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: November 6, 2001
    Assignee: Parker-Hannifin Corporation
    Inventors: Michael A. Benjamin, Adel B. Mansour
  • Patent number: 6311496
    Abstract: A fuel/air mixing arrangement for a combustion apparatus such as a gas turbine comprises a first swirler in which air and fuel are mixed to form a fuel/air mixture, a first conduit to supply a first proportion of the mixture to the combustion apparatus, a second swirler arranged to receive a second proportion of the mixture, and a second conduit to supply the second proportion from the second swirler to the combustion apparatus.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: November 6, 2001
    Assignee: Alstom Gas Turbines Limited
    Inventor: Hisham Salman Alkabie
  • Publication number: 20010027772
    Abstract: A laminated fuel swirl element is employed, in which a strong swirl force flow is imparted to the fuel at a remote position relative to an injection hole, while on the other hand, at a position near the fuel injection hole, a weak swirl force is imparted to the fuel. A complex solid cone spray can be obtained in this way, which spray has a superior dispersion characteristic obtained by attracting small diameter droplets, which are generated at an outer peripheral portion of the spray, through a spray portion which is generated in the vicinity of a central area of the spray and has a large velocity.
    Type: Application
    Filed: March 30, 2001
    Publication date: October 11, 2001
    Inventors: Yoshio Okamoto, Yzo Kadomukai, Yoshiyuki Tanabe, Yasunaga Hamada
  • Patent number: 6152724
    Abstract: A device and a method for burning fuel in air. The device includes an annular passage for directing the air in a meridional flow with regard to an axis. A swirl cascade is provided for imposing a swirl on the flow, and a mixer for intermixing the fuel with the flow for forming an essentially homogeneous mixture. Also present is an air flow delayer for delaying a portion of the flow that lies radially on the outside with regard to the axis relative to other portions of the flow. The device is configured in particular as a premix burner, for example for use in a gas-turbine plant.
    Type: Grant
    Filed: March 9, 1999
    Date of Patent: November 28, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventor: Bernard Becker
  • Patent number: 6102692
    Abstract: In a burner for a heat generator, having a swirl generator (100) arranged upstream of the combustion zone (30), fuel injection is connected with the combustion air (115), swirled in the swirl generator, in such a way that the injection angle of the fuel jet (105) belonging to the fuel nozzle (104) corresponds approximately to the setting angle of the sectional bodies forming the swirl generator relative to the axis (60) of the burner.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: August 15, 2000
    Assignee: ABB Alstom Power (Switzerland) Ltd
    Inventors: Klaus Dobbeling, Christian Steinbach, Thomas Ruck
  • Patent number: 6059565
    Abstract: A burner for operating a heat generator, the burner including a swirl generator for a combustion-air flow and a mechanism for injecting at least one fuel into the combustion-air flow, a mixing section arranged downstream of the swirl generator and having a number of transition passages for passing a flow formed in the swirl generator into a mixing tube arranged downstream of the transition passages. The combustion-air flow into the swirl generator flows against turbulence generators, which are located upstream of the injection of the fuel into the combustion-air flow, and the turbulence generators include individual bars set transversely to the combustion-air flow.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: May 9, 2000
    Assignee: ABB Alstom Power (Switzereland) Ltd
    Inventors: Hans Peter Knopfel, Thomas Ruck
  • Patent number: 5951922
    Abstract: A system for aerating substantial bodies of water which includes a cavitating mixer-injector to inject air into a stream passing through the injector, the mixer-injector having twisting and straightening vanes in a respective conveying and an expanding portion, a nozzle with twisting vanes in a constricting portion, and a conduit connecting the outlet of the mixer-injection to the inlet of the nozzle. The conduit preferably provides dwell time for a suitable amount of injected air to dissolve in the stream before entering the nozzle.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: September 14, 1999
    Inventor: Angelo L. Mazzei
  • Patent number: 5941075
    Abstract: A system is disclosed for injecting air and fuel into a combustion chamber of a turbojet engine in which the system includes a fuel injector having an axis A, a first radial swirler located rearwardly of the fuel injector having a plurality of first air passages to direct air into the fuel emanating from the fuel injector in a first plane generally perpendicular to the axis A, a housing located rearwardly of the first radial swirler and forming a pre-mixing chamber bounded by a converging-diverging wall forming a venturi with a throat, the housing having a plurality of second air passages forming a second radial swirler to direct air into the pre-mixing chamber forwardly of the venturi throat in a second plane generally perpendicular to the axis A. The housing also has a plurality of third air passages forming an axial swirler, the second passages and the third passages alternating in a circumferential direction around the housing.
    Type: Grant
    Filed: August 19, 1997
    Date of Patent: August 24, 1999
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation (SNECMA)
    Inventors: Denis Roger Henri Ansart, Gilles Gerard Claude Lepretre, Denis Jean Maurice Sandelis
  • Patent number: 5930999
    Abstract: A gas turbine engine carburetor includes a fuel injector having a plurality of circumferentially spaced apart fuel outlets. A plurality of air swirlers (24) are circumferentially spaced apart around the fuel injector (22), with each swirler having a fuel inlet (24b) disposed in flow communication with a respective one of the fuel outlets for receiving fuel therefrom. Each swirler includes a plurality of swirl vanes to swirl air for mixing with the fuel from the fuel inlets. The multi-swirler carburetor having a common fuel injector increases injection points for reducing NO.sub.x emissions.
    Type: Grant
    Filed: July 23, 1997
    Date of Patent: August 3, 1999
    Assignee: General Electric Company
    Inventors: Stephen J. Howell, Joseph D. Cohen
  • Patent number: 5605287
    Abstract: An airblast fuel nozzle has an injector head with an extension or support strut. An annular valve spool with a fuel discharge orifice is fixed to the head and a metering assembly surrounds the valve spool. The metering assembly includes an axially-slidable annular valve sleeve and a metal bellows. The bellows, a compression spring, and one or more shims between the valve spool and the injector head provide a preset bias on the valve sleeve such that the valve sleeve initially closes or minimizes the fuel metering area through longitudinally-extending fuel swirl slots spaced about the valve spool at the discharge orifice. When fuel under pressure flows through the injector, the fuel pressure overcomes the preset bias of the sleeve and moves the valve sleeve axially with respect to the valve spool, thereby increasing the fuel metering area through the fuel swirl slots and allowing fuel to flow (with a swirling component) therethrough.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: February 25, 1997
    Assignee: Parker-Hannifin Corporation
    Inventor: Robert T. Mains
  • Patent number: 5588826
    Abstract: In a burner which consists of a swirl generator (100) on the oncoming-flow side, the flow (40) formed herein is passed smoothly into a mixing section (220). This is done with the aid of a transition geometry which is present at the start of the mixing tube (220) and consists of transition passages (201) which cover sectors of the end face of the mixing section (220), in accordance with the number of sectional bodies of the swirl generator (100), and run helically in the direction of flow. On the outflow side of these transition passages (201), prefilming bores (21) pass through the mixing section (220), which prefilming bores (21) initiate an increase in the flow velocity along the tube wall. Adjoining the mixing section (220) is a combustion chamber (30) in which a backflow zone (50) forms in the region of the jump in cross-section between mixing section (220) and combustion chamber (30).
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: December 31, 1996
    Assignee: ABB Management AG
    Inventors: Klaus Dobbeling, Jurgen Haumann, Hans P. Knopfel, Bettina Paikert, Thomas Ruck, Thomas Sattelamayer, Christian Steinbach
  • Patent number: 5302115
    Abstract: Disclosed is a burner register assembly having an air register assembly for imparting a controlled vortex swirl to secondary combustion air of a furnace in order to entrain the fuel and primary air of the furnace and carry them into the furnace interior. The assembly may comprise a series of arcuate vanes circumferentially spaced about the fuel and primary air nozzle, the vanes being designed to induce both turbulence and a well defined vortex to the secondary air flow. A separate air valve, such as a butterfly valve, is provided upstream of the air register assembly to regulate the volume of secondary air flow. Shadow vanes may also be provided in the vicinity of the air register assembly outlet, and positioned adjacent the furnace walls in order to protect the air register assembly from furnace heat, particularly when the burner associated with the air register assembly is idle and the secondary air flow is lowered.
    Type: Grant
    Filed: December 14, 1992
    Date of Patent: April 12, 1994
    Assignee: Damper Design, Inc.
    Inventors: Donald K. Hagar, Lyle D. Geiger
  • Patent number: 5288021
    Abstract: Past systems have attempted to cool the combustor end or tip of fuel injection nozzles, however, such methods have failed to attain adequate cooling and life. The present system or structure for cooling a tip or combustion end of a fuel injection nozzle is accomplished with a twofold structure. First, a plurality of openings being acutely positioned in the combustor end about a plurality of base circles provide effective air-sweep cooling. Secondly, the convection cooling of a back face and a combustion face provides effective convection cooling. The two structures are combined to provide an effective, efficient cooling of the combustor end or tip. The combustor end of the fuel injection nozzle is maintained at a temperature low enough to prevent failure of the combustor end through oxidation, cracking and buckling and the air-sweep avoids carbon deposits on the combustor face.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: February 22, 1994
    Assignee: Solar Turbines Incorporated
    Inventors: Virendra M. Sood, Robie L. Faulkner
  • Patent number: 5152463
    Abstract: A spray nozzle designed to produce a spray or mist containing a high concentration of bubbles. Such a spray is particularly useful in mixing liquid fuel and air for burning within a combustion chamber, as for example in a gas turbine engine. The novel design includes a pair of swirl chambers generally axially aligned within the nozzle. Fuel or other liquid enters the first or forward swirl chamber in a generally tangential and laminar flow pattern, passes into the second or rearward chamber through an interconnecting orifice. Violent liquid and air mixing occurs in the second chamber and the mixture is then expelled as an aerated spray through the interconnecting orifice, the first chamber and a discharge orifice.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: October 6, 1992
    Assignee: Delavan Inc.
    Inventors: Chien-Pei Mao, Roy E. Pack, Jr.
  • Patent number: 5115981
    Abstract: When the container is compressed, liquid flows via a riser (2) and an inflow channel (10) tangentially into a vortex chamber (9), where a rotary flow is induced. The liquid is accelerated by the conical cross-section of the inner wall (5) of the liquid nozzle (1) until it is discharged from the orifice (7) of the liquid nozzle (1). At the same time, air from the container flows via an inflow channel (11) into the annular chamber (3) which surrounds the liquid nozzle (1). Coaxial with the liquid nozzle there is a mixture nozzle (4) with a conical inner wall (5'). The orifice (7) of the liquid nozzle (1) is retracted relative to the orifice (8) of the mixture nozzle (4), so that the two media are jointly accelerated after mixing.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: May 26, 1992
    Inventors: George E. Callahan, Harald Koch
  • Patent number: 5050532
    Abstract: In a method of moistening such articles as tools (drills, band saws, circular saws, thread cuttters and similar tools as well as stamping, drawing, and sectioning tools) or workpieces (metal or plastic articles being machined, pipes that are being sawn through, or sheet metal being rolled into structural piping for example) with a liquid (such as a lubricant or coolant for tools and workpieces or an adhesive for workpieces), wherein the liquid is removed from a reserve of liquid and supplied by way of a pipeline to a dispenser that is aimed at the area of the article to be moistened, the pipeline having flow controls and a blender for blending a gaseous medium into the liquid, the improvement wherein the liquid is mixed with the gaseous medium in a gyration chamber into a fluid that is supplied through tubing to a dispenser and sprayed onto the area to be moistened through the dispenser.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: September 24, 1991
    Assignee: Hundt & Weber Schaltgerate GmbH
    Inventor: Klaus Ruppert
  • Patent number: 4975045
    Abstract: A burner register assembly is provided for controlling a supply of secondary air to a furnace having a fuel and primary air supply and a secondary air supply. The burner register assembly includes a body and a pair of air valves in the body for communication with the secondary air supply to control the admission of secondary air to the register assembly. Each air valve communicates with a scroll section in the burner register body, which scroll section has a scroll passageway which spirals inwardly in the direction of secondary air flow to provide a controlled flow pattern of secondary air into the furnace. The air valve is disposed upstream of the scroll section with which it communicates and thus is well removed from the extreme environment of the opening or throat to the furnace. The burner register assembly also includes a shadow vane assembly positioned proximate to the outlet of the register, i.e., proximate to the furnace throat, to provide protection form radiant heat from the furnance.
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: December 4, 1990
    Assignee: Eagleair, Inc.
    Inventors: George K. Green, Landy Chung
  • Patent number: 4884746
    Abstract: A fuel nozzle having two concentric flow paths, the interior flow path comprising a first swirl chamber having a first diameter, an exit chamber having a second diameter selected to be smaller than the first diameter, and a convergent section joining the first swirl chamber and the exit chamber. The exterior flow path comprises an annular second swirl chamber formed about the periphery of the exit chamber. The interior flow path has a fuel and air mixture flowing therethrough while the exterior flow path has air only flowing therethrough. Fuel in the interior flow path is caused to lie in a film and flow circumferentially about the internal wall of the first swirl chamber by air entering into the first swirl chamber through inlet holes which are configured to direct the air tangentially along the internal wall surface of the first swirl chamber.
    Type: Grant
    Filed: February 5, 1987
    Date of Patent: December 5, 1989
    Assignee: Radial Turbine International A/S
    Inventor: George D. Lewis
  • Patent number: 4771919
    Abstract: A dispensing device which includes two chambers, one for holding a resin and another for a hardener. Each chamber has an exit port formed in a neck which contains passageways leading to each of the chambers. The neck is equipped with external threads which mate with internal threads on a nozzle adjusting nut. A nozzle, which is carried by the nut can be moved from an open position to a closed position in which a portion of the nozzle's base closes the ports. A divider or tab projects from the neck at a location near and between the ports, and the nozzle has a slot to receive the divider. The divider serves to prevent mixing of the components until well after they exit the ports. The divider/slot arrangement further prevents mixing of the components by preventing relative rotation between the nozzle and the neck. Three separate sealing surfaces are formed on the base of the nozzle. One is cylindrical and seals against an O-ring carried by the neck.
    Type: Grant
    Filed: October 28, 1987
    Date of Patent: September 20, 1988
    Assignee: Illinois Tool Works Inc.
    Inventor: Richard J. Ernst
  • Patent number: 4664315
    Abstract: An electrostatic nozzle assembly for coating row crops and other plants with electrostatically charged particles of pesticide including a nozzle body formed with passageways to receive air and a grounded stream of waterborne pesticide for delivery through a nozzle tip to an inductor ring mounted between the nozzle body and an air nozzle having a discharge orifice. As the stream of waterborne pesticide is projected from the nozzle tip, it is impacted with a swirling, spirally moving stream of air produced by a swirl plate having a plurality of tapered air channels oriented tangentially relative to the pesticide stream and communicating with the air passageway in the nozzle body. The inductor ring inductively charges the pesticide in the terminal end of the nozzle tip.
    Type: Grant
    Filed: January 15, 1986
    Date of Patent: May 12, 1987
    Assignee: Parker Hannifin Corporation
    Inventors: William F. Parmentar, Gary E. Burls
  • Patent number: 4600377
    Abstract: A liquid fuel burner head features an axially movable primary air assembly carrying a centrally disposed nozzle spraying fuel radially of the burner head. Primary air ports surround the nozzle and include means for progressively increasing swirl of the primary air as radial distance from the nozzle increases and for adjusting the location of flame origin. Metering of secondary air and adjustment of its direction of swirl are both accomplished rearward of the secondary air outlet, the primary air assembly moving rearwardly to increase the secondary air as firing rate rises. A simple metal, frusto-conical flame holder is secured to and spaced forwardly of the burner head.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: July 15, 1986
    Assignee: Cedarapids, Inc.
    Inventor: Joseph E. Musil
  • Patent number: 4561841
    Abstract: A combination apparatus having a swirl chamber for mixing primary air and atomized fuel in a primary helical flame vortex and a splitting chamber downstream of the swirl chamber for shearing off secondary helical flame vertexes from the primary vortex rotatably meshed with the prime vortex. Cutting blades positioned in the splitting chamber slice outer portions of the helical primary vortex into channels formed between the blades. The blades are longitudinally disposed perpendicular to the movement of the primary flame vortex and are tilted toward the primary flame vortex at an increasing angle relative to the longitudinal axis between the upstream and downstream portions of the splitting chamber. An intermediate stabilizing chamber can be positioned between the upstream swirl chamber and the downstream splitting chamber.
    Type: Grant
    Filed: June 27, 1984
    Date of Patent: December 31, 1985
    Inventor: Donald Korenyi
  • Patent number: 4504216
    Abstract: Disclosed is a burner register assembly having an air register assembly for imparting a controlled vortex swirl to secondary combustion air of a furnace in order to entrain the fuel and primary air of the furnace and carry them into the furnace interior. The assembly may comprise a series of arcuate vanes circumferentially spaced about the fuel and primary air nozzle, the vanes being designed to induce both turbulence and a well defined vortex to the secondary air flow. A separate air valve, such as a butterfly valve, is provided upstream of the air register assembly to regulate the volume of secondary air flow. Shadow vanes may also be provided in the vicinity of the air register assembly outlet, and positioned adjacent the furnace walls in order to protect the air register assembly from furnace heat, particularly when the burner associated with the air register assembly is idle and the secondary air flow is lowered.
    Type: Grant
    Filed: September 15, 1982
    Date of Patent: March 12, 1985
    Assignee: Eagleair, Inc.
    Inventors: Donald K. Hagar, Lyle D. Geiger
  • Patent number: 4491272
    Abstract: A pressure atomizing fuel nozzle assembly for a gas turbine engine includes a support housing in which a pressure-responsive fuel check valve and metering valve are disposed in line to provide a flow of primary fuel for engine start-up and low power operation and secondary fuel for higher power operation. The check valve is located upstream between the fuel inlet and a sleeve inside of which the metering valve is disposed. The check valve prevents the fuel manifold from draining after engine shut-down and controls fuel entry to both the secondary fuel chamber within the sleeve and to an annular primary fuel chamber between the sleeve and support housing connected in fuel flow relation to the secondary chamber by a fuel filter. The primary fuel flows through the primary chamber around the exterior of the secondary chamber and through an annular primary fuel conduit disposed around the secondary fuel conduit in the housing strut to the nozzle attached to the strut.
    Type: Grant
    Filed: January 27, 1983
    Date of Patent: January 1, 1985
    Assignee: Ex-Cell-O Corporation
    Inventors: Jerome R. Bradley, Robert M. Halvorsen, Jeffrey B. Hurst, Gregory F. Long
  • Patent number: 4485968
    Abstract: A versatile mixing nozzle for dispensing polyphase fuels into a combustion zone of a boiler. The nozzle is characterized by a plurality of mixing chambers, a relatively low pressure-drop spray nozzle design and a stationary dispersing disk and radiation-protective shield partially projecting in front of the nozzle outlet ports.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: December 4, 1984
    Assignee: Columbia Chase Corporation
    Inventor: Camille J. Berthiaume
  • Patent number: 4464108
    Abstract: In a combustion apparatus having an ignition means, a plurality of first swirl vanes positioned at the upstream end of a flame retention head creates a helical primary air/fuel mixture in the combustion chamber of the retention head that ignites into a primary flame vortex. A second plurality of vanes mounted on the inner walls of the retention head shears the outer portions of the primary flame vortex into a plurality of secondary helical flame vortexes disposed about the perimeter of the primary flame vortex. The secondary flame vortexes are opposite in rotational orientation to the direction of rotation of the primary flame vortex. Secondary air is injected into the combustion chamber at the area of shearing.
    Type: Grant
    Filed: August 16, 1983
    Date of Patent: August 7, 1984
    Inventor: Donald Korenyi