Flame Holder Having Protective Flame Enclosing Or Flame Stabilizing Structure Patents (Class 431/350)
  • Patent number: 8393891
    Abstract: A combustion nozzle for use in a turbine. The combustion nozzle may include a center body and a cone extending from the center body. The cone may include a number of apertures positioned therein.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: March 12, 2013
    Assignee: General Electric Company
    Inventors: Gregory Allen Boardman, Thomas Edward Johnson
  • Patent number: 8381714
    Abstract: A gas burner for a cooking appliance having a base portion and a side wall extending from the base portion. A cap is disposed on the side wall. The cap includes a substantially conical interior surface facing the base portion. The substantially conical interior surface is configured to substantially eliminate creation of turbulent flow eddies in a gaseous fuel mixture passing through the gas burner.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: February 26, 2013
    Assignee: General Electric Company
    Inventors: Timothy Scott Shaffer, Mark Davis Johnson, Derek Lee Watkins
  • Patent number: 8382468
    Abstract: Method for combusting a solid phase fuel, where the fuel is caused, by the help of a non-pneumatic feeding element (11), to be fed to an inlet opening (11a) in a burner device (10) having a first inlet (13a) for the oxidant through which an oxidant is caused to flow via a first supply conduit (13). The first inlet (13a) for oxidant is caused to be arranged in the form of an opening surrounding the inlet opening (11a), in that the oxidant is caused to flow out through the opening (13a) with a velocity of at least 100 m/s, through a burner pipe (16) and out through a burner orifice (17) to a combustion space (18), so that the oxidant by ejector action causes the fuel to be conveyed through the burner pipe (16) and out through the burner orifice (17).
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: February 26, 2013
    Assignee: AGA AB
    Inventor: Tomas Ekman
  • Patent number: 8336534
    Abstract: Adjustable gas grill burners are disclosed. Methods of making and using adjustable gas grill burners are also disclosed.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: December 25, 2012
    Inventor: Andrew Irvin
  • Patent number: 8307657
    Abstract: A system, in one embodiment, includes a turbine engine. The turbine engine includes a combustor that includes a hollow annular wall having a combustor liner. The turbine engine also includes first flow path in a first direction through the hollow annular wall. The turbine engine further includes a second flow path in a second direction that is opposite the first direction through the hollow annular wall. The second flow path may include one or more film holes configured to supply a cooling film to a downstream end portion of the combustor liner.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: November 13, 2012
    Assignee: General Electric Company
    Inventor: Ronald James Chila
  • Patent number: 8297969
    Abstract: Gas burner (1) comprising a main metal body (6), an inner lance (11) for combustible gas, at least two outer lances (10) for combustible gas, a single duct (8) for conveying pre-heated air, a regulation system for the combustible gas, a refractory unit (30), characterized in that said gas burner (1) comprises a series of nozzles (20) for the injection of the preheated air into the combustion chamber, and in that, by operating on the gas regulation system, it is possible to switch, with continuity, from a flame functioning mode of the burner to a flameless functioning mode, the latter characterized by low emissions of polluting agents.
    Type: Grant
    Filed: November 25, 2004
    Date of Patent: October 30, 2012
    Assignee: Techint Compagnia Tecnica Internazionale S.p.A.
    Inventors: Marco Daneri, Pierpaolo Pastorino, Vittorio Laviosa, Massimiliano Fantuzzi, Umberto Zanusso, Enrico Malfa
  • Patent number: 8261556
    Abstract: A device for guiding an element in an orifice in a wall of a turbomachine combustion chamber is disclosed. The device includes a coaxial ring and bushing mounted one inside the other. The bushing includes two coaxial annular parts that are fastened to each other by welding and that define a groove for guiding a rim of the ring. Welding zones between the parts of the bushing are situated away from the path of the rim of the ring when moved along a privileged transverse direction of ring movement relative to the bushing when the combustion chamber is in operation.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: September 11, 2012
    Assignee: SNECMA
    Inventors: Patrick Audin, Florian Andre Francois Bessagnet, Pierre Pascal Sablayrolles, Guillaume Sevi
  • Publication number: 20120208141
    Abstract: A combustor includes a combustion chamber and a liner surrounding the combustion chamber. A ridge on top of the liner extends continuously around the liner. In alternate embodiments, a ridge extends continuously around the liner, and a groove extends continuously around the liner adjacent to the ridge, wherein both of the ridge and the groove are either substantially flat or curved.
    Type: Application
    Filed: February 14, 2011
    Publication date: August 16, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Prabhu Kumar Ippadi Siddagangaiah, Kodukulla Venkat Sridhar, Karthick Kaleeswaran, Nitin Subramanya Sarja
  • Patent number: 8231380
    Abstract: The invention concerns a combustion method for industrial furnace comprising an arrangement of two substantially parallel and symmetrical burner assemblies (G, D). Each burner assembly comprises a fuel injector (10<SUB>G</SUB>, 10<SUB>D</SUB>) and three oxidant injectors (1<SUB>G</SUB>, 2<SUB>G</SUB>, 3<SUB>G</SUB>, 1<SUB>D</SUB>, 2<SUB>D</SUB>, 3<SUB>D</SUB>) arranged at increasing distances from the fuel injector. An oxidant supply system cyclically distributes a specific flow of oxidant among some at least of the second and third injectors of the burner assemblies (2<SUB>G</SUB>, 3<SUB>G</SUB>, 2<SUB>D</SUB>, 3<SUB>D</SUB>). The amount of nitrogen monoxide produced upon combustion is thus reduced, while ensuring a good distribution of the heating power in the furnace.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: July 31, 2012
    Assignee: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Rémi Tsiava, Benoit Grand, Patrick Recourt, Bertrand Leroux
  • Patent number: 8215117
    Abstract: A catalytic reactor for a gas turbine engine comprising an air inlet, a premixing zone, a reacting zone comprising a reactive portion and a nonreactive portion, a post reaction mixing zone, a first fuel injection system for introducing fuel into the reactive portion, and a second fuel injection system for introducing fuel into the nonreactive portion.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: July 10, 2012
    Assignee: United Technologies Corporation
    Inventors: Meredith B. Colket, Alexander Chen
  • Patent number: 8215950
    Abstract: A burner tube to provide combustible materials to a combustor is provided and includes an annular shroud and a center body, having a cavity defined therein, disposed within the annular shroud to form an annular passage, the annular passage being communicable with a combustion zone of the combustor at an aft portion thereof and including a fore portion in which fuel is injected into the annular passage. The center body includes a surface having a passage defined therein through which air is to be supplied to the annular passage from the cavity at a position, which is downstream from the fuel injection and upstream from the combustion zone. Also provided is a contouring of the centerbody.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: July 10, 2012
    Assignee: Genral Electric Company
    Inventors: Ramanand Singh, Atul Kumar Vij, Chetan Babu Velkur
  • Patent number: 8209969
    Abstract: A burner module for burning injected reformate mixed with engine exhaust in an exhaust pipe ahead of aftertreatment devices, comprising an exhaust flow divider that creates a localized region of exhaust flow for mixture of the reformate. The amount of reformate required to produce a burnable composition in the localized area is less than what is required in the prior art to provide the same composition over the entire cross-sectional region of the exhaust pipe. An igniter is provided within the localized region. Upon ignition of the reformate, the flow of reformate may be increased to the point of a stoichiometric mixture for the entire exhaust, to produce the maximum heat for warm up. The exhaust flow divider may comprise a divider tube mounted in the exhaust pipe or may be simply a protrusion from a wall of the exhaust pipe.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: July 3, 2012
    Assignee: Delphi Technologies, Inc.
    Inventors: David A. Goulette, Kevin S. Hoyer, Giulio A. Ricci-Ottati, Daniel B. Hamilton
  • Patent number: 8206148
    Abstract: For cooking appliances, a gas burner presenting externally at least one annular portion (50), characterized by presenting two gas inlets (3, 10), with which at least two injectors (4, 11) are associated respectively; the first gas inlet (3) supplying the air/gas mixture to a first annular chamber (55) provided in said annular portion (50) and communicating with a series of main ports (24) through which said mixture leaves to form at least one main flame ring (43) in the outer circumference of the annular portion (50); the second gas inlet (10) supplying the air/gas mixture to a second annular chamber (55) provided in said annular portion (50) and feeding a flame ring (27) which constitutes the only flame ignited in the burner when this is operating at minimum power.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: June 26, 2012
    Assignee: Defendi Italy S.R.L.
    Inventor: Carlo Paesani
  • Patent number: 8192195
    Abstract: Inorganic fiber production burner apparatus and methods of use are disclosed. One burner includes a refractory block adapted to be in fluid connection with sources of primary oxidant and fuel, the refractory block having a fuel and primary oxidant entrance end and a flame exit end, the flame exit end having a substantially rectangular flame exit having a width greater than its height, the refractory block defining a combustion chamber and a second chamber fluidly connecting the combustion chamber and the flame exit end; and an oxygen manifold fluidly connected to the combustion chamber and adapted to route oxygen to the combustion chamber through a plurality of passages through the refractory block. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).
    Type: Grant
    Filed: July 21, 2009
    Date of Patent: June 5, 2012
    Assignee: Johns Manville
    Inventors: Harley Allen Borders, Michael R. Nijakowski, William J. Thome, Raymond L. McKenzie
  • Publication number: 20120135360
    Abstract: An apparatus includes a furnace structure defining a combustion zone, and a tube that discharges fuel-oxidant premix into the combustion zone through an outlet from the tube. A reactant supply system provides the tube with unmixed fuel and oxidant for forming the premix. A flashback control means inhibits or extinguishes flashback in the tube.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 31, 2012
    Applicant: Fives North American Combustion, Inc.
    Inventors: Mark C. Hannum, John J. Nowakowski, Thomas F. Robertson
  • Publication number: 20120122045
    Abstract: A seal arrangement for a silo combustor includes a first casing and a second casing each forming a passageway for a gas, an end portion of the first casing being disposed radially inside an end portion of the second casing such that the first and the second casing form an overlapping region having a radial gap. A segmented seal has at least two adjacent segments disposed in the overlapping region so as to seal the radial gap, wherein the first casing includes at least one opening disposed in a region between the at least two adjacent segments.
    Type: Application
    Filed: November 3, 2011
    Publication date: May 17, 2012
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Vladimir Vassiliev, Fulvio Magni, Sergey Anatolievich Chernyshev, Victor Vladimirovich Odinokov
  • Patent number: 8172566
    Abstract: An apparatus for combustion of a liquid fuel, such as an atomizer or burner, and an associated method using the apparatus for combusting an atomized liquid fuel. The apparatus for combustion has an outer conduit, an inner conduit and a spray tip. The spray tip has a mixing chamber for receiving a liquid fuel and an atomizing gas, and an orifice for discharging the liquid fuel and atomizing gas mixture as an atomized liquid fuel. The inner conduit has external fins where at least some of the external fins contact the inner surface of the spray tip.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: May 8, 2012
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Matthew James Watson, Xiaoyi He
  • Patent number: 8172568
    Abstract: A combustor, in which a flame holding region is formed at a location distant from a pilot burner to avoid burnout of the pilot burner and in which flame holding capability is increased to use a lean pre-mix gas for reducing NOx emission, is provided. The combustor includes a combustion liner having a cylindrical side wall that defines a combustion chamber; and a main burner positioned at a top portion of the combustion liner for injecting an annular pre-mix gas into the combustion chamber to form a reverse flow region at a downstream portion thereof, which region is oriented towards the top portion of the combustion chamber along a longitudinal axis. In this combustor, a pilot burner is arranged at the top portion for injecting a mixture of fuel and air only in a direction confronting the reverse flow region.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: May 8, 2012
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Hiroyuki Kashihara, Yasushi Yoshino, Kiyoshi Matsumoto, Takeshi Kimura, Junichi Kitajima, Atsushi Horikawa
  • Publication number: 20120103237
    Abstract: Horizontally arranged burners for boiler furnaces are provided where each burner includes a fuel nozzle surrounded by a secondary air outlet. The fuel nozzle and secondary air outlets may tilt in tandem with respect to an air plenum supplying inner secondary air and a fuel carrier providing fuel. Also provided are outer secondary air buckets that may independently tilt with respect to a frame connected to the air plenum. This arrangement can be installed as a retrofit in a conventional horizontal furnace system or in a newly built system. The fuel nozzle and secondary air outlet, and secondary air buckets may all tilt in unison or may all tilt independently. The tilting assists with optimizing a flame temperature profile within the furnace.
    Type: Application
    Filed: November 3, 2010
    Publication date: May 3, 2012
    Inventors: Ronny Jones, Alan E. Paschedag, Joseph P. Malone
  • Patent number: 8167610
    Abstract: Premix furnace for heating an occupied space while producing lower NOx emissions and methods of mixing air and fuel delivered to a premix burner and of improving combustion stability. A mixing device may be located within an inlet tube, may have a flat surface that is perpendicular to the direction of fuel flow, or may have two surfaces held at substantially opposite angles to induce swirl. A mixing device may be attached to the fuel injector, may be made from a piece of sheet metal, and may have bends and a hole for attachment to the fuel injector. A fluidic diode in the inlet tube may improve combustion stability and may include a hollow frustum or a frustoconical portion, a cylinder concentric with the inlet tube, or a combination thereof. Some embodiments include refractory insulation lining the combustion chamber or may adjust for elevation or fuel characteristics.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: May 1, 2012
    Assignee: Nordyne, LLC
    Inventors: William F. Raleigh, Robert A. Borgeson, Aaron D. Herzon, Allan J. Reifel, Russell W. Hoeffken
  • Publication number: 20120100494
    Abstract: A burner assembly comprising a burner element (8) at which gas is combusted. A valve (2) allows selective release of gas from a source into an expandable space (4) when the valve is opened. The space is expanadable up to a fixed volume (3) against the action of a restoring means. The space is arranged to contract under the action of the restoring means to force gas out of the space and to the burner element.
    Type: Application
    Filed: December 21, 2006
    Publication date: April 26, 2012
    Applicant: RECKITT BENCKISER (UK) LIMITED
    Inventor: Matthew James
  • Publication number: 20120088201
    Abstract: A combustor nozzle includes a nozzle body that defines a cavity. An orifice in the nozzle body provides fluid communication from the cavity through the nozzle body. A movable barrier proximate to the orifice has a first position in which the movable barrier at least partially obstructs the orifice. A method for supplying fuel to a combustor includes flowing fuel through an orifice in a nozzle, determining a reactivity of the fuel, and adjusting an effective cross sectional area of the orifice based on the reactivity of the fuel.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 12, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Elias Marquez, Bharat Bagepalli, Richard Arthur Symonds, Donald Timothy Lemon
  • Patent number: 8147240
    Abstract: A gas burner assembly includes a first sheet, a second sheet, and a conduit. The first sheet has an inner face, an outer face, an upper portion, and a lower portion. The second sheet also has an inner face, an outer face, an upper portion and a lower portion. The first and second sheets are secured relative to one another such that the first and second sheets are separated by a gap that defines a manifold between the inner faces of the first and second sheets with an elongate opening between the upper portions of the first and second sheets, the opening forming an outlet from the manifold. The conduit is in communication with the manifold, the conduit being adapted for connection to a source of gas.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: April 3, 2012
    Assignee: HNI Technologies Inc.
    Inventors: David C. Lyons, Travis P. Betcher, Louis L. Mead
  • Patent number: 8128398
    Abstract: A burner for a heat generator comprises a swirl generator (1) for a combustion-air flow and means for injecting fuel for producing a main flow (6). A combustion chamber (2) is arranged downstream of the burner. A cavity (3) is arranged between the swirl generator (1) and the combustion chamber (2), in which cavity (3) a secondary flow (10) can be produced, and this secondary flow (10) encloses the main flow (6).
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: March 6, 2012
    Assignee: ALSTOM Technology Ltd.
    Inventors: Peter Flohr, Ephraim Gutmark, Christian Oliver Paschereit
  • Publication number: 20120052451
    Abstract: According to one aspect of the disclosure, an apparatus for injecting fuel is provided, where the apparatus includes a cone structure that includes a passage to form a swirl of an air-fuel mixture in a combustion chamber. The apparatus also includes at least one adjustable vane positioned in the passage configured to control the swirl of the air-fuel mixture and control a flame stability.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Mahesh Bathina, Ronald James Chila, Senthamil Selvan
  • Patent number: 8096803
    Abstract: Apparatus for enhancing combustion of an undesired chemical to minimize the formation of smoke during operation of a flare stack for the discharge of a flare feedstream includes a plurality of high-pressure air nozzles spaced apart below and around the periphery of the stack outlet. Each nozzle is directed toward the stack outlet and in the direction of the feedstream's movement. High-pressure air from the nozzles forms a plurality of high-velocity air jets to produce a moving air mass that draws additional atmospheric air into the air mass moving toward the stack outlet to enhance combustion of the flare feedstream. Analytical means determine the stoichiometric oxygen requirements, and an air-flow valve controls the flow rate of the high-pressure air to the nozzles.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: January 17, 2012
    Assignee: Saudi Arabian Oil Company
    Inventors: Mazen Mashhour, M. Rashid Khan
  • Patent number: 8092213
    Abstract: In a flame arrester insert comprising two metal strips (1, 2) wound together, of which a first metal strip (1) is a smooth strip and the second metal strip (2) is a grooved strip having defined grooving, so that they rest on each other at defined contact points (3) and, between the contact points (3), form defined gaps (4) for the passage of a fluid, the stability can be increased and corrosion prevention can be implemented even with inexpensive materials by the metal strips (1, 2) resting directly on each other at the contact points (3) and, outside the contact points (3), having a surface coating (5) which, close to the contact points, is a uniform joint coating of the surfaces of the metal strips (1, 2) that point toward each other.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: January 10, 2012
    Assignee: Leinemann GmbH & Co. KG
    Inventor: Christoph Leinemann
  • Publication number: 20110306000
    Abstract: A combustor of a water heater includes a burner member and a flame cover. The burner member has a passageway therein with an inlet and an outlet. The flame cover has a plurality of flame holes. The character of the present invention is that the burner member is provided with a room at a top thereof communicated with the passageway. A separating device is put in the room, and the flame cover is connected to the burner member to cover the separating device The separating device has a main outlet and two side outlets right under the flame holes of the flame cover to generate main flames and side flames respectively.
    Type: Application
    Filed: June 9, 2010
    Publication date: December 15, 2011
    Applicant: GRAND MATE CO., LTD.
    Inventors: Chung-Chin Huang, Chin-Ying Huang, Hsin-Ming Huang, Hsing-Hsiung Huang, Kuan-Chou Lin
  • Patent number: 8066509
    Abstract: A device for combusting fuel which contains or consists of hydrogen, is described, with a burner provided with a swirl generator and also a feeder for feeding fuel and a feeder for feeding combustion air into the swirl generator. A first feeder, for feeding liquid fuel along a burner axis, and a second feeder for feeding liquid fuel or gaseous fuel along air inlet slots which are tangentially delimited by the swirl generator, with a transition section connected downstream to the swirl generator, and with a mixer tube connected downstream to the transition section and with a changeable flow cross-sectional transition leads into a combustion chamber are provided. Along the transition section, a third feeder for feeding fuel which contains or consists of hydrogen, and also a fourth feeder for the selective feed of fuel which contains or consists of hydrogen, or of the gaseous fuel are also provided.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: November 29, 2011
    Assignee: Alstom Technology Ltd.
    Inventors: Adnan Eroglu, Klaus Döbbeling
  • Patent number: 8057224
    Abstract: A premix burner has a mixing section (3) for a heat generator, sectional conical shells (5) which complement one another to form a swirl body, enclose a conically widening swirl space (6), and mutually define tangential air-inlet slots (7), along which feeds (8) for gaseous fuel are provided in a distributed manner, having at least one fuel feed (11) for liquid fuel, this fuel feed (11) being arranged along a burner axis (A) passing centrally through the swirl space (6), and having a mixing tube (4) adjoining the swirl body downstream via a transition piece (2). At least one additional fuel feed (13) for liquid fuel is provided in the region of the swirl body, the transition piece (2), and/or the mixing tube (4).
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: November 15, 2011
    Assignee: ALSTOM Technology Ltd.
    Inventor: Hans Peter Knoepfel
  • Patent number: 8057222
    Abstract: A direct flame impingement burner including a metal block with a fuel inlet and an oxidant inlet and at least two outlet nozzles having a set of identical nozzle outlet openings. The oxidant inlet is connected with an oxidant chamber within the block that is connected with at least one oxidant outlet opening in the set of nozzle outlet openings by passageways of identical length and cross-sectional area. The fuel inlet is connected with a fuel chamber within the block that is connected with at least one fuel outlet opening in the set of nozzle outlet openings by passageways of identical length and cross-sectional area. The fuel gas pressure is equal over all corresponding fuel outlet openings in the set of openings in each nozzle, and the oxidant gas pressure is equal over all corresponding oxidant outlet openings in the set of openings in each nozzle.
    Type: Grant
    Filed: May 6, 2006
    Date of Patent: November 15, 2011
    Assignee: AGA AB
    Inventors: Lennart Rangmark, Tomas Ekman
  • Publication number: 20110250547
    Abstract: A burner system and a method of control. The system includes a supply unit that provides a gas/air mixture to a burner assembly. The burner assembly includes a distribution outlet having a plurality of openings and an electrode. The electrode provides an electrical arc to ignite the gas/air mixture for a predetermined period of time.
    Type: Application
    Filed: April 12, 2010
    Publication date: October 13, 2011
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: LaRon Michelle Brown, Ann Marie Straccia, Gregory Latowski
  • Patent number: 8033821
    Abstract: A premix burner is provided, with a swirl generator and a downstream mixer tube for combusting gaseous and liquid fuel which during entry of combustion air is introduced into the burner interior space of the swirl generator and/or is introduced into the burner interior of the swirl generator on a burner axis, and also with a fuel lance which is arranged on the burner axis. The premix burner, in the transition section from the swirl generator to the mixer tube, includes at least one additional feed for introducing gaseous and/or liquid premix fuel from the wall region into the burner interior space of the mixer tube.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: October 11, 2011
    Assignee: Alstom Technology Ltd.
    Inventor: Adnan Eroglu
  • Patent number: 8029273
    Abstract: A burner is disclosed which includes a vortex generator for a combustion air stream, means for the admission of fuel into the combustion air stream and air inlet ducts, the combustion air stream enters a vortex chamber of the vortex generator via air inlet ducts. The fuel is injected into the combustion air asymmetrically via the injection means.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: October 4, 2011
    Assignee: Alstom Technology Ltd
    Inventors: Christian Oliver Paschereit, Bruno Schuermans
  • Patent number: 8021145
    Abstract: A gas burner comprising a gas supply element having an outlet, and a gas deflector disposed adjacent the outlet, the position of the deflector, relative to the outlet, being adjustable so as to allow the extent of deflector-induced aeration to be altered.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: September 20, 2011
    Assignee: Neat Gas Burners Limited
    Inventors: Anthony Lawrence Alfred Pompe, Kallis Haralambous
  • Patent number: 8011360
    Abstract: A vented, gas-fired air heater especially designed for temporary heating applications includes an improved burner design providing effective air and gas mixing and efficient burning in the combustion chamber. Highly efficient heat exchanger including corrugated heat exchanger panels provides enhanced heat transfer characteristics.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: September 6, 2011
    Assignee: Haul-All Equipment Ltd.
    Inventors: Sergiu Desi-Seulean, David Wiebe-Neufeldt
  • Publication number: 20110177465
    Abstract: An alternative-fuel gas orifice, a gas furnace configured to employ the same and a method of designing a gas orifice. In one embodiment, the gas orifice includes: (1) a body having an aperture extending therethrough and including: (1a) a metering neck having a cross-sectional area such that a given flow rate of a gas is established when the gas is delivered to the gas orifice at a given alternative-fuel delivery pressure and (1b) a diffuser having a cross-sectional area larger than the cross-sectional area of the metering neck and a length such that the gas achieves a substantially laminar flow before exiting the diffuser.
    Type: Application
    Filed: July 12, 2010
    Publication date: July 21, 2011
    Applicant: Lennox Industries, Incorporated
    Inventors: Hans J. Paller, Glenn W. Kowald
  • Patent number: 7934926
    Abstract: An ejector, such as a venturi, facilitates the delivery of gaseous fuel to the combustion chamber of a burner. A blower forces air through the ejector, and the air flow produces a suction that draws fuel from a fuel inlet to produce a fuel-air mixture. The amount of fuel drawn from the fuel inlet is a function of the air flow such that a substantially constant fuel-air ratio is obtained over a range of air flow rates and temperatures without the need for a separate high-pressure fuel pump. The fuel-air mixture may be provided to a combustion chamber for combustion. Air from the blower may be pre-heated prior to entering the ejector, for example, using a heat exchanger that recovers some of the heat from the combusted fuel-air mixture. Air flow through the ejector may be conditioned, for example, by a swirler, to produce a tangential air flow that can increase fuel flow by increasing air velocity across the fuel inlet and/or produce a swirl-stabilized flame in the combustion chamber.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: May 3, 2011
    Assignee: DEKA Products Limited Partnership
    Inventors: Kurt L. Kornbluth, Michael G. Norris
  • Patent number: 7931468
    Abstract: In an all primary combustion burner, a partition plate that demarcates a mixing chamber between the partition plate and a bottom wall section of a burner main body and a distributing plate that sections a space between the partition plate and the combustion plate into a first distributing chamber and a second distributing chamber are provided in the burner main body to cause a fuel gas and a primary air to flow into the mixing chamber A pressure loss is minimized to make it possible to satisfactorily mix the fuel gas and the primary air. An outlet is formed on a downstream side of the partition plate. A guide plate section that extends to the downstream side while inclining in a normal direction, which approaches the bottom wall section of the burner main body, from an edge on the upstream side of the outlet, is provided in the partition plate.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: April 26, 2011
    Assignee: Rinnai Corporation
    Inventors: Takashi Ojiro, Yoshihiko Takasu
  • Publication number: 20110086318
    Abstract: A gas burner apparatus comprising a burner base disposed over a gas burner, a burner head disposed over the burner base, and one or more burner covers disposed over the burner head. A method comprising a burner base over a gas burner, providing a burner headwith one or more burner ports over the burner base, providing one or more burner covers over the burner head, and sliding one or more burner covers over at least one of the one or more burner ports.
    Type: Application
    Filed: October 9, 2009
    Publication date: April 14, 2011
    Applicant: AMERICAN WYOTT CORPORATION
    Inventors: Roger A. Schwierking, Kenneth P. Gross
  • Publication number: 20110081621
    Abstract: The invention relates to a gas burner comprising a metal burner membrane having a base section (201), a closing section (203) and a transition region in between (202). The shape of the membrane is such that the smallest radius of curvature of the transition zone is smaller than the smallest radius of curvature of the base section. Furthermore the burner membrane uninterruptedly flows over from the base section through the transition region into the closing section. The advantages of such a gas burner are amongst others a large dynamic power range, an improved flame front and a low production cost.
    Type: Application
    Filed: December 14, 2010
    Publication date: April 7, 2011
    Inventors: Dinand LAMBERTS, Alfred Van Goor, Geert Folkers
  • Publication number: 20110079014
    Abstract: A burner arrangement includes a tubular mixing tube extending along an axis and configured to mix fuel and air, the mixing tube opening into a combustion chamber in a direction of flow; and a film air ring disposed in the mixing tube and arranged concentrically to the axis, the film air ring configured to prevent a backfiring of the fuel disposed in the mixing tube and to generate or reinforce an air film near the wall, wherein the film air ring has at least one annular gap concentric to the axis and configured to inject air.
    Type: Application
    Filed: September 7, 2010
    Publication date: April 7, 2011
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Richard CARRONI, Marcel RIEKER, Adnan EROGLU, Heinz SCHAER
  • Patent number: 7914279
    Abstract: Apparatus and methods for improved combustion of oxygen and a mixture of a non-gaseous fuel, which includes providing: 1) a source of a mixture of non-gaseous fuel and conveying gas; 2) a source of oxygen; 3) a burner operatively associated with a combustion chamber; 4) a fuel duct in fluid communication with the source of mixed non-gaseous fuel and conveying gas; 5) a tubular oxygen lance fluidly communicating with the source of oxygen; and 6) at least two injection elements in fluid communication with the source of oxygen. The fuel duct includes a portion that extends along an axis towards the burner. The lance is disposed along the axis and has a diameter D. The injection elements are configured to inject oxygen into, and mix therewith, a flow of the mixture upstream of, or at, the burner. At least one of the injection elements receives oxygen from the lance. The injection elements are spaced apart by a distance X, which is greater than the length of diameter D.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: March 29, 2011
    Assignee: American Air Liquide, Inc.
    Inventors: M. Usman Ghani, Florian Gautier, Fabienne Chatel-Pelage, Frederick W. Giacobbe, Pavol Pranda, Nicolas Perrin
  • Patent number: 7896646
    Abstract: A premixing burner is disclosed for operating a combustion chamber with a liquid and/or gaseous fuel, with a swirl generator for a combustion inflow air stream for forming a swirl flow, and with injection of fuel into the swirl flow. The swirl generator is adjacent to the combustion chamber indirectly via a mixing zone or directly, in each case via a burner outlet, a cross-sectional widening at the burner outlet being provided which, is discontinuous in the flow direction of the swirl flow and through which the swirl flow bursts open so as to form a backflow zone. A contour locally narrowing the flow cross section of the swirl generator or of the mixing zone in the flow direction can be provided upstream of the burner outlet.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: March 1, 2011
    Assignee: Alstom Technology Ltd
    Inventors: Peter Flohr, Christian Oliver Paschereit
  • Publication number: 20110045426
    Abstract: Techniques for the enhancement of the stability of an afterburning flame in the viscinity of a low pressure loss augmentor are provided by various geometrical modifications of the base region of the augmentor.
    Type: Application
    Filed: August 24, 2010
    Publication date: February 24, 2011
    Inventors: Wookyung Kim, Mark Godfrey Mungal, Heinz Guenter Pitsch
  • Patent number: 7878799
    Abstract: What are described are a multiple burner arrangement and a method for operating such a multiple burner arrangement with a multiplicity of individual burners which are designed as premix burners and which serve for firing a combustion chamber of a thermal engine and each have a swirl space into which combustion supply air and fuel can be introduced so as to form a swirl flow, the swirl flow forming downstream of the premix burner, within the combustion chamber, a backflow zone in which a burner flame is formed.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: February 1, 2011
    Assignee: Alstom Technology Ltd
    Inventors: Peter Flohr, Christian Joerg Motz, Majed Toqan, Martin Zajadatz
  • Patent number: 7871262
    Abstract: A method and a device for combusting gaseous fuel which contains hydrogen or consists of hydrogen, includes a burner which provides a swirl generator (1) into which liquid fuel is feedable centrally along a burner axis (A), forming a liquid fuel column which is conically formed and which is enveloped by, and mixed through with, a rotating combustion air flow which flows tangentially into the swirl generator (1). The gaseous fuel is fed inside the swirl generator (1) largely axially and/or coaxially to the burner axis (A), forming a fuel flow with a largely spatially defined flow pattern (9) which is maintained inside the burner and bursts open in the region of the burner outlet.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: January 18, 2011
    Assignee: ALSTOM Technology Ltd.
    Inventors: Richard Carroni, Timothy Griffin
  • Patent number: 7871264
    Abstract: A burner assembly for a gas powered cooking appliance is provided. The burner assembly may include a burner body including a central region and a plurality of radiating extensions extending radially outward from the central region. The burner assembly may include a burner cap with a central region and a plurality of radiating extensions extending radially outward from the central region. The burner cap is positioned on top of the burner body when the burner is assembled. The burner cap may include at least one overhang positioned on the outer perimeter of the central region and between an adjacent pair of radiating extensions. The at least one overhang forms a gap between the exterior wall of the burner body and the interior wall of the overhang. This gap, or flame stabilization chamber, provides for collection of gases and flame that aid in maintaining the flame during low temperature operation.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: January 18, 2011
    Assignee: Electrolux Home Products, Inc.
    Inventors: William Michael Pryor, Hector Jose Donastorg, John Thurl Pottenger, Michael Dennis Padgett
  • Publication number: 20100330520
    Abstract: A combustion apparatus mainly consists of burners, a fuel supply channel having branched channels, an air feeder for supplying air to the burners, and a pressure regulator and has a combustion space. The branched channels allow fuel gas supplied to the burners to pass therethrough and are provided with shutoff valves. The pressure regulator includes a signal-pressure inlet and a secondary-pressure inlet. A signal pressure introduced through the signal-pressure inlet is detected at a downstream of the air feeder and a secondary pressure introduced through the secondary-pressure inlet is detected at a vicinity of a boundary of the branched channels in the fuel supply channel. Fuel gas discharged from the pressure regulator is regulated so as to satisfy a predetermined relationship between the signal pressure introduced through the signal-pressure inlet and the secondary pressure introduced through the secondary-pressure inlet.
    Type: Application
    Filed: June 28, 2010
    Publication date: December 30, 2010
    Applicant: NORITZ CORPORATION
    Inventor: Yoshinori Kanda
  • Patent number: 7857617
    Abstract: A gas burner including a burner body having a lower housing, an inlet conduit and a combustion surface element attached to the lower housing. A diffuser/reflector positioned within the body encourages even distribution and mixing of a combustible gas/air mixture. The diffuser/reflector is preferably of a sheet metal construction and includes a plurality of stamped openings with each of these openings having an overhanging guide plate. The combustion surface element includes a plurality of integrally formed rigidizing ribs and is made from a high temperature steel alloy wire cloth. The inlet conduit is secured directly or indirectly to an access door/bulkhead that is used to close off an access opening formed in a water heater wall through which the burner is installed. In one construction, an air scoop shrouds the inlet conduit and at least partially defines a flow path of primary air, substantially isolated from the combustion chamber.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: December 28, 2010
    Assignee: Beckett Gas, Inc.
    Inventors: Michael J. O'Donnell, Richard Cook