Coaxial Patents (Class 431/284)
  • Patent number: 10401025
    Abstract: A gas burner with multiple rings of main flames includes an injector holder structure; a central distribution chamber within a central flame divider element that is rigid with the injector holder structure, generates a central ring of flames, and is closed by a circular cover; an annular distribution chamber having an annular flame divider element that is rested on the injector holder structure, generates at least one ring of main flames concentric with the central ring of flames, is separated from the central distribution chamber by an annular space, and is closed by an annular cover; and first and second venturi conduits that are substantially horizontal and parallel, are situated in the injector holder structure outline, and have inlet ends facing injectors associated with a wall of the injector holder structure and outer ends opening into cavities communicating with the central distribution chamber and with the annular distribution chamber.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: September 3, 2019
    Inventors: Luca Breccia, Girolamo Emiliani, Marco Sbaffi
  • Patent number: 9909758
    Abstract: Gas burner, particularly for household cooking appliances, with an horizontal or vertical gas supply conduit (1), a burner body with one more flame crowns, an horizontal or vertical Venturi (4), a nozzle (5) to inject the gas flow from said gas conduit into said Venturi pipe and, means to provide the primary air flow which include a tubular conduit which is coaxial and placed outside said gas conduit, and an opening to allow the gas flow, placed between said nozzle and the inlet of the Venturi pipe. The coaxial conduit draws the respective air flow from a zone inside the body of said cooking appliance, and said opening allows the passage of the respective primary air flow sucked and coming from over the appliance top surface (12). In order to stir the primary air flow passing through said coaxial conduit, a plurality of radial wings (10A) is arranged, said wings being shaped either planar or helical, and being connected on the outer surface of said gas supply conduit.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: March 6, 2018
    Assignee: Electrolux Home Products Corporation N.V.
    Inventors: Nico Biagioli, Piero Armanni, Marco Starnini
  • Patent number: 9797601
    Abstract: A combustor is provided. The combustor may include an axial fuel injection system, and a radial fuel injection system aft of the axial fuel injection system. The axial fuel injection system includes a mixer having a bluff body at an exit port of the mixer, and a fuel injector disposed within the mixer. A fuel and air mixer is also provided and comprises an outer housing with an exit port and a bluff body. The bluff body extends across the exit port of the outer housing. A fuel injection system is also provided. The systems comprise a mixer having a bluff body at an exit port of the mixer and a fuel injector disposed within the mixer.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: October 24, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Albert K. Cheung, James B. Hoke, Randal G. McKinney
  • Patent number: 9459008
    Abstract: A method of controlling a fuel split of a pilot fuel flow and a main fuel flow in a gas turbine combustor during a load reduction is provided. The rate of change of fuel flow demand is monitored and an additional pilot fuel flow is added. The amount of additional pilot fuel flow depends on the rate of the change in fuel flow demand.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: October 4, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Dorian Skipper
  • Patent number: 9353950
    Abstract: A combustor includes an end cap that extends radially across at least a portion of the combustor. The end cap includes an upstream surface axially separated from a downstream surface. A plurality of tubes extend from the upstream surface through the downstream surface of the end cap to provide fluid communication through the end cap. Each tube in a first set of the plurality of tubes has an inlet proximate to the upstream surface and an outlet downstream from the downstream surface. Each outlet has a first portion that extends a different axial distance from the inlet than a second portion.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: May 31, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Jong Ho Uhm, Willy Steve Ziminsky, Thomas Edward Johnson, Michael John Hughes, William David York
  • Patent number: 9206986
    Abstract: A burner is provided. The burner may include a burner head having mixing pipes through which an air-gas mixture may flow, and a burner cap seated on the burner head and having an opening formed therein. The burner head may include a support wall along its periphery supporting the burner cap thereon and an inner wall formed within the periphery of the support wall, the inner wall having a plurality of flame holes. The center of the burner cap may be positioned within the opening.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: December 8, 2015
    Assignee: LG ELECTRONICS INC.
    Inventors: Yongki Jeong, Janghee Park, Jaebeom Lim
  • Patent number: 9089724
    Abstract: A mist generating apparatus is provided. The apparatus has a longitudinal axis and comprises first and second opposing surfaces which define a transport fluid nozzle between them. The apparatus also has a working fluid passage having a supply passage connectable to a supply of working fluid, and an outlet on one of the first and second surfaces. The working fluid outlet communicates with the transport fluid nozzle. The transport fluid nozzle has a nozzle inlet connectable to a supply of transport fluid, a nozzle outlet, and a throat portion intermediate the nozzle inlet and nozzle outlet. The nozzle throat has a cross sectional area which is less than that of either the nozzle inlet or the nozzle outlet. The transport fluid nozzle projects radially from the longitudinal axis such that the nozzle defines a rotational angle of at least 5 degrees about the longitudinal axis. A method of generating a mist using the apparatus is also provided.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: July 28, 2015
    Assignee: Tyco Fire & Security GmbH
    Inventors: Marcus Brian Mayhall Fenton, James Oliver French
  • Patent number: 9033697
    Abstract: A method for starting a burner for combusting synthesis gases is provided. The burner includes first and second fuel passages, the first fuel passage encompasses the second fuel passage in a substantially concentric manner and the gas transferred to the burner is mixed with combusting air and is combusted. In order to start the burner, the second fuel passage is first loaded with a synthesis gas to a predefined burner power at a first starting phase and the first fuel passage is loaded with the synthesis gas at a second starting phase.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: May 19, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Berthold Köstlin, Frank Hannemann, Andreas Heilos, Gerhard Zimmermann
  • Publication number: 20150068438
    Abstract: A biomass-mixed, pulverized coal-fired burner is provided. The biomass-mixed, pulverized coal-fired burner is capable of burning biomass fuel as auxiliary fuel in large quantities and burning only pulverized coal when the biomass fuel is not sufficiently available. The biomass-mixed, pulverized coal-fired burner includes: a biomass fuel jet nozzle that extends axially along the biomass-mixed, pulverized coal-fired burner; a pulverized coal fuel jet nozzle that surrounds the biomass fuel jet nozzle; a secondary air nozzle that surrounds the pulverized coal fuel jet nozzle; and a tertiary air nozzle that surrounds the secondary air nozzle. A biomass fuel stream is jetted into an inside of a pulverized coal fuel flame formed in a furnace, the flame offering favorable ignition and flame holding performance.
    Type: Application
    Filed: March 21, 2013
    Publication date: March 12, 2015
    Inventors: Koji Taniguchi, Atsunori Kato, Suguru Yabara, Yutaka Tanabe
  • Patent number: 8967997
    Abstract: A burner for a fire plume generator includes a liquid fuel nozzle directed along a first axis, a peripheral shield extending around the liquid fuel nozzle, the peripheral shield extending substantially along the first axis and defining an upper end and a lower end, and a pilot flame manifold located at or above the upper end of the peripheral shield, the pilot flame manifold defining a plurality of pilot flame outlets. A fire plume generator, a fire safety protection evaluation system, and a method of evaluating a fire safety protection device are also disclosed.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: March 3, 2015
    Assignee: Factory Mutual Insurance Company
    Inventors: Hong-Zeng Yu, Stephen P. D'Aniello
  • Publication number: 20150053124
    Abstract: A biomass-mixed, pulverized coal-fired burner is provided, capable of burning biomass fuel as auxiliary fuel in large quantities and burning only pulverized coal when the biomass fuel is not sufficiently available. The biomass-mixed, pulverized coal-fired burner includes a biomass fuel jet nozzle that extends axially along the biomass-mixed, pulverized coal-fired burner, a fuel jet nozzle that is open midway in the biomass fuel jet nozzle, a secondary air nozzle that surrounds the fuel jet nozzle, and a tertiary air nozzle that surrounds the secondary air nozzle. A pulverized coal component in a fuel stream as a mixture of the pulverized coal fuel stream and the biomass fuel stream is distributed with a higher concentration on an outer circumferential wall side and a biomass fuel component in the fuel stream is distributed inside of the pulverized coal fuel component.
    Type: Application
    Filed: March 21, 2013
    Publication date: February 26, 2015
    Inventors: Koji Taniguchi, Atsunori Kato, Suguru Yabara, Yutaka Tanabe
  • Patent number: 8932049
    Abstract: The present invention relates to a top burner and a cooker including the top burner. The present invention includes: an outer burner installed on a top surface of a top plate, and provided with a plurality of flame holes to form flames through combusting gas mixture at a perimeter thereof; an inner burner installed on a top surface of the outer burner, and provided with a plurality of flame holes to form flames through combusting gas mixture at a perimeter thereof disposed inward to the perimeter of the outer burner; a plurality of first mixing tubes supplying gas mixture mixed with air inside the outer burner; a second mixing tube supplying gas mixture mixed with air inside the inner burner; and a passage formed through the outer tube, and in which air supplied to combust gas mixture at the flame holes of the inner burner flows. Thus, according to the present invention, the advantages of heating food more efficiently while reducing incomplete combustion of gas mixture can be realized.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: January 13, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jung-Wan Ryu, Dae-Bong Yang, Yong-Ki Jeong, Young-Soo Kim, Dae-Rae Lee, Yang-Ho Kim, Jae-Bum Lim, Jae-Hyuk Wie
  • Patent number: 8920159
    Abstract: An apparatus is provided for combining oxygen and fuel to produce a mixture to be burned in a burner. The oxygen-fuel mixture is ignited in a fuel-ignition zone in a flame chamber to produce a flame.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: December 30, 2014
    Assignee: Honeywell International Inc.
    Inventor: Curtis Taylor
  • Patent number: 8920160
    Abstract: Low NOx emission industrial burner, adapted to operate both in a flame or stage mode and in a flameless mode, so that also the heating step of the chamber of a furnace may be made by means of the same burner, without providing a pilot burner, thus ensuring very low NOx emissions for the whole operation range of the burner and for the whole range of temperatures in the chamber. The combustion process, made by means of said burner, provides for the possibility to combine the stage mode operation with the flameless mode operation.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: December 30, 2014
    Assignee: Danieli & C. Officine Meccaniche S.p.A.
    Inventors: Enrico Mozzi, Michele Valenza
  • Publication number: 20140370448
    Abstract: A stack is provided for combustion of low pressure hydrocarbon vapors from various equipment, the combustion being discrete from periodic flaring of high pressure vapors from a top of the stack. A primary burner is positioned adjacent a base of the stack and a flare is positioned in the stack's bore adjacent a top thereof. Combustion air is naturally aspirated through the stack through inlets in the stack below the primary burners, providing both primary air and secondary air for the primary burners and first combustion air for the flare. The flare aspirates further combustion air from about the top of the stack. The combustion air optimizes clean burning at the primary burner and for reducing smoke production from the flare. A controller provides an auto re-light igniters at the primary burner and a continuous igniter at the flare.
    Type: Application
    Filed: June 13, 2014
    Publication date: December 18, 2014
    Inventor: Chris ALDRICH
  • Patent number: 8899224
    Abstract: A burner apparatus includes a first tube having a first longitudinal bore and a second tube having a second longitudinal bore. The second tube is disposed within the first longitudinal bore such that an annular space is defined between the second tube and the first tube. The burner apparatus further includes a nozzle formed at a tip of the second tube. A plurality of side holes are formed in the nozzle. The side holes are slanted relative to a longitudinal axis of the nozzle and are in communication with the second longitudinal bore.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: December 2, 2014
    Assignee: Corning Incorporated
    Inventor: Curtis Richard Cowles
  • Patent number: 8875544
    Abstract: Apparatus includes a first and second conduits configured to form an annulus between them. An adjustable structure includes a body having an upper surface, a lower surface, and a circumferential surface abutting a portion of the internal surface of the second conduit. The structure is adjustable axially in relation to and removably attached to the first conduit via a hub. The hub defines a central passage for fuel or oxidant. The body has one or more non-central through passages configured such that flow of an oxidant or fuel therethrough causes the fuel or oxidant to intersect flow of fuel or oxidant exiting from the central passage in a region above the upper surface of the body.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: November 4, 2014
    Inventor: Mark William Charbonneau
  • Publication number: 20140308619
    Abstract: A lean premix burner has a center fire nozzle, which includes radial gas outlets and a ring of outlets. The gas outlets from the center fire nozzle are fed from a manifold. The center fire gas is controlled separately from the main gas supply, which has several advantages, including enhanced turn down capability.
    Type: Application
    Filed: January 31, 2014
    Publication date: October 16, 2014
    Applicant: Hauck Manufacturing Company
    Inventor: Bruce Wartluft
  • Patent number: 8845326
    Abstract: An gas burner assembly for a cooking appliance includes a main burner assembly, a simmer burner assembly positioned in a stacked relationship with and located below the main burner assembly, a venturi assembly for delivering a gas flow to the main burner assembly, a gas boost pump configured to control a pressurization of the gas flow, a gas valve assembly for controlling a rate of the gas flow, and an encoder coupled to the gas valve assembly, the encoder configured to track a position of the gas valve assembly and provide a signal to the gas boost pump for pressurization of the gas flow.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: September 30, 2014
    Assignee: General Electric Company
    Inventors: Timothy Scott Shaffer, Eric K. Watson, Brian Michael Schork, Paul Bryan Cadima, Paul E. McCrorey
  • Patent number: 8794960
    Abstract: A low NOx burner for installation on a furnace wall has an elongated tube connected to a combustion air supply, the furnace side end of which mounts a combustion air spinner that is spaced from the furnace wall. A plurality of air ports extend through the wall into the combustion chamber. Downstream ends of the air ports are spaced from the furnace wall as well as from the spinner, and they are configured to bias the discharged air flow towards the spinner. A plurality of first fuel gas spuds with fuel gas discharge orifices arranged about the spinner and discharges fuel gas into the combustion chamber downstream of the spinner. A second fuel gas spud is disposed in pockets between adjacent pairs of air ports which are closed against the furnace wall so that no combustion air flows through the pockets. The third gas spuds are placed inside the air ports.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: August 5, 2014
    Assignee: John Zink Company, LLC
    Inventors: Vladimir Lifshits, Stephen B. Londerville
  • Patent number: 8757202
    Abstract: A dual fuel heating source can have a dual entry valve unit with a main body at least partially defining a certain flow paths or channels therethrough. The dual entry valve can have first and second inlets and first and second outlets. The dual fuel heating source may also include a pressure regulator, an exit valve, a control valve and/or a manifold connected to the dual entry valve unit.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: June 24, 2014
    Inventor: David Deng
  • Patent number: 8753112
    Abstract: A gas burner with a plurality of concentric flame crowns including a burner body, a first central burner, and a second outer annular burner surrounding the first central burner, where the first central burner includes a first diffusion chamber and a first gas injector configured to inject a gas flow into a first Venturi pipe which is configured to convey the gas flow to the first diffusion chamber, and where the second outer annular burner includes two separate outer diffusion chambers and two distinct outer injectors each of which is configured to inject a gas flow into one of two outer Venturi pipes which are configured to convey the gas flows to the two separate outer diffusion chambers, and where the first gas injector, the first Venturi pipe, and the two outer Venturi pipes are substantially horizontally oriented.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: June 17, 2014
    Assignee: Electrolux Home Products Corporation N.V.
    Inventors: Piero Armanni, Marco Starnini, Nico Biagioli, Nicola Guardigli
  • Patent number: 8747108
    Abstract: The present invention relates to the field of burners, particularly in burners intended for household use, such as stoves.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: June 10, 2014
    Assignee: Mabe, S.A. de C.V.
    Inventors: Jose Arturo Lona Santoyo, Ernesto Arias Del Campo, Roberto Cabrera Botello
  • Patent number: 8689779
    Abstract: A gas burner with a burner lower part with a lower gas distribution chamber which is open at the top and a radial secondary air passage to supply secondary air to an inner region of the gas burner, and a burner upper part positioned loosely on the burner lower part and partially closing off the lower gas distribution chamber, and which includes a burner ring, in which an annular upper gas distribution chamber is configured, and which has a gas throughflow opening corresponding to the lower gas distribution chamber and connecting the lower gas distribution chamber to the upper gas distribution chamber.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: April 8, 2014
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Christophe Cadeau, Jörn Naumann
  • Patent number: 8689707
    Abstract: A replacement burner system which facilitates reduction of nitrous oxide produced during combustion of a fuel. The replacement burner system comprising a fuel supply duct having an inlet and an outlet with a fuel deflector located within the fuel supply duct to facilitate redistribution of a flow of the fuel. An adjustable coal nozzle is located within the fuel supply duct between the fuel deflector and the outlet. An exterior surface of the fuel supply duct supports an air swirling device, and the air swirling device obstructs between 65% and 75% of the transverse flow area, located between an exterior surface of the fuel supply duct and the inwardly facing surface of the venturi register, after the replacement burner system is accommodated within the windbox of a combustion boiler.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: April 8, 2014
    Assignee: Fuel Tech, Inc.
    Inventors: Peter D. Marx, Robert W. Pickering, Charles E. Trippel
  • Patent number: 8568136
    Abstract: A heater can be configured to operate with either a first fuel at a first pressure or a second fuel at a second pressure. In some embodiments, a pressure regulator unit is configured to regulate the pressure of either the first fuel or the second fuel and to direct either the first fuel or the second fuel towards a combustion chamber. A nozzle assembly can be configured to inject the fuel into the combustion chamber.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: October 29, 2013
    Assignee: Procom Heating, Inc.
    Inventor: David Deng
  • Patent number: 8545216
    Abstract: In certain embodiments, a valve assembly includes a housing. The housing can define a first fuel intake, a first fuel output, and a second fuel output. The assembly can include a valve member configured to direct fuel from the first fuel intake to either the first fuel output or the second fuel output. The assembly can further include a nozzle having a first portion and a second portion. The first portion of the nozzle can be in communication with the first fuel output, and the second portion of the nozzle can be in communication with the second fuel output. The assembly can include a compartment in communication with the nozzle, and can include one or more air intakes.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: October 1, 2013
    Assignee: Continental Appliances, Inc.
    Inventor: David Deng
  • Patent number: 8535052
    Abstract: A cap for a gas burner is disclosed. The cap includes a center portion including a top surface having a periphery; at least one extension extending outward from the center portion, the at least one extension defining a drain channel extending outward and downward from the top surface; and a ledge extending along the periphery. A spill resistant gas burner assembly incorporating such a cap is also disclosed.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: September 17, 2013
    Assignee: General Electric Company
    Inventor: Paul Bryan Cadima
  • Patent number: 8517718
    Abstract: A dual fuel heating source can have a fuel selector valve for selecting between a first fuel and a second fuel different from the first. The dual fuel heating source may selectively have a regulator unit, and an outlet valve. The regulator unit can be configured to regulate the pressure of two different fuels. The outlet valve can be connected to the fuel selector valve such that selecting a fuel can determine the path fuel will flow through the outlet valve and also out of the heating source.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: August 27, 2013
    Inventor: David Deng
  • Patent number: 8517722
    Abstract: A torch assembly includes a first tube having opposing first and second ends and a first body structure between the opposing first and second ends. The torch assembly also includes a second tube having opposing first and second ends and a second body structure between the opposing first and second ends. The torch assembly further includes a support jacket. The support jacket includes a support structure. The support structure defines an aperture extending along an axis oriented along a generally longitudinal direction of the support structure. The first tube and the second tube are in a substantially concentric configuration when the second end of the first tube and the second end of the second tube are inserted into the aperture of the support structure.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: August 27, 2013
    Assignee: Elemental Scientific, Inc.
    Inventor: Daniel R. Wiederin
  • Patent number: 8511294
    Abstract: A gas burner for cooking appliances employing a ring of main flames for cooking, and a ring of simmering flames for heating. A first chamber contains the gas and primary air mixture for feeding the ring of main flames through a circumferential wall with a plurality of radial apertures. The chamber contains the gas and primary air mixture for feeding the ring of simmering flames through radial passages. The chambers are superposed, and a separator plate is interposed between the chambers. A cover rests on the separator plate and the radial apertures are defined therebetween. The cover extends beyond the passage and shields same from ambient conditions.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: August 20, 2013
    Assignee: Defendi Italy S.R.L.
    Inventor: Carlo Paesani
  • Publication number: 20130205889
    Abstract: A burner for a fire plume generator includes a liquid fuel nozzle directed along a first axis, a peripheral shield extending around the liquid fuel nozzle, the peripheral shield extending substantially along the first axis and defining an upper end and a lower end, and a pilot flame manifold located at or above the upper end of the peripheral shield, the pilot flame manifold defining a plurality of pilot flame outlets. A fire plume generator, a fire safety protection evaluation system, and a method of evaluating a fire safety protection device are also disclosed.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 15, 2013
    Applicant: FACTORY MUTUAL INSURANCE COMPANY
    Inventors: Hong-Zeng YU, Stephen P. D'ANIELLO
  • Patent number: 8480394
    Abstract: The invention relates to a flat-flame vault burner (10) suitable for being installed in a vault (21) which delimits the combustion chamber (20) of a steel heating furnace, the burner (10) comprising a main metallic hollow cylindrical body (12), a single duct (13) for the conveyance of fuel gas concentric to the main body (12), and a central internal nozzle (14) for the injection of a fuel gas. Said burner also comprises at least two nozzles (17) outside said main body (12) for the injection of fuel into the combustion chamber (20).
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: July 9, 2013
    Assignee: Tenova S.p.A.
    Inventors: Marco Daneri, Vittorio Laviosa, Maurizio Senarega, Massimiliano Fantuzzi, Umberto Zanusso, Enrico Malfa
  • Patent number: 8465276
    Abstract: Disclosed is a method for operating a burner for fluid fuels. According to said method, the fluid fuel is mixed with an oxidizer before the fluid fuel is burned. The inventive method is characterized in that a liquid fuel that is used as a fluid fuel is mixed with a gaseous or vaporous carrier flow before being mixed with the oxidizer while the carrier flow containing the liquid fuel is mixed with the oxidizer in order to mix the liquid fuel with the oxidizer.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: June 18, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventor: Bernd Prade
  • Patent number: 8454354
    Abstract: An oxy-fuel burner that co-fires liquid fuel and gaseous fuel to create a more luminous flame. The characteristics of a liquid fuel spray and the gaseous fuel and primary oxidant gas flows, as well as the geometry of the burner is adapted to shroud the liquid fuel from the primary oxidant until it exits a precombustor and to prevent the liquid fuel from contacting the walls of the precombustor.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: June 4, 2013
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Matthew James Watson, Mark Daniel D'Agostini, Jin Cao, Aleksandar Georgi Slavejkov
  • Patent number: 8449292
    Abstract: A rotary kiln burner particularly for fine-grained solid fuels such as coal dust, with jet air nozzles which can be adjusted easily and effectively during operation of the kiln in order to change the divergence angle of the high-speed jet air streams to change the flame shape and optimize the combustion. The jet air nozzles are attached with the nozzle openings divergent to the burner axis at the end of jet air pipes. The nozzle openings are arranged around the burner axis, with the axes parallel, with the jet air pipes arranged inside an annular cooling air space surrounding the coal dust channel and enclosed on the outside by the burner housing pipe.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: May 28, 2013
    Assignee: KHD Humboldt Wedag GmbH
    Inventors: Alexander Knoch, Ernst Schröder, Karin Kluthe, Wilhelm Wenzel, Giovanni Loggia
  • Publication number: 20130086949
    Abstract: Apparatus includes a first and second conduits configured to form an annulus between them. An adjustable structure includes a body having an upper surface, a lower surface, and a circumferential surface abutting a portion of the internal surface of the second conduit. The structure is adjustable axially in relation to and removably attached to the first conduit via a hub. The hub defines a central passage for fuel or oxidant. The body has one or more non-central through passages configured such that flow of an oxidant or fuel therethrough causes the fuel or oxidant to intersect flow of fuel or oxidant exiting from the central passage in a region above the upper surface of the body.
    Type: Application
    Filed: October 7, 2011
    Publication date: April 11, 2013
    Inventor: Mark William Charbonneau
  • Patent number: 8408897
    Abstract: The present invention provides a gas burner (10) including: a distributor means (50) having at least one distribution chamber to distribute an air gas mixture around said distributor (50), said burner (10) including a plurality of flame ports (70) through which said gas mixture can pass and be ignited; at least one injector (39) associated with said distributor (50), said at least one injector (39) being positioned to inject gas into said at least distribution chamber via a venture formed of a vertically directed passage and transition port (64) and at least one venturi extension extending away from said transition port (64).
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: April 2, 2013
    Assignee: Aktiebolaget Electrolux
    Inventors: Carlo Antonio Rossi, Marco Rossi, Steven McIntyre, Keith Joseph Borg, George Brock-Nannestad
  • Patent number: 8408197
    Abstract: A burner apparatus includes a first tube having a first longitudinal bore and a second tube having a second longitudinal bore. The second tube is disposed within the first longitudinal bore such that an annular space is defined between the second tube and the first tube. The burner apparatus further includes a nozzle formed at a tip of the second tube. A plurality of side holes are formed in the nozzle. The side holes are slanted relative to a longitudinal axis of the nozzle and are in communication with the second longitudinal bore.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: April 2, 2013
    Assignee: Corning Incorporated
    Inventor: Curtis Richard Cowles
  • 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: 8292615
    Abstract: A method for burning gas in a burner, including leading the gas through an inner fuel tube and introduction of combustion air through an annular space surrounding the inner fuel tube. This space forms of an outer tube terminated by a conically converging section, wherein the end of the inner fuel tube forms a burner head. The major part of the primary gas is introduced into the upstream end of the burner head, to go into the combustion air that flows past the burner head, whereas a smaller part of a secondary gas is introduced into the free end of the burner head and into the constricted part of the annular channel that surrounds the burner head. The gas flow is accelerated past the burner head due to the reducing cross section and is burned downstream in relation to the burning head.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: October 23, 2012
    Assignee: Norwegian University of Science and Technology (NTNU)
    Inventors: Øystein Spangelo, Otto Kristian Sonju, Torbjorn Slungaard, Mario Ditaranto
  • Patent number: 8245703
    Abstract: A burner ring for a gas burner, the burner ring including an outer circumference and an inner circumference, a distribution chamber having gas outlets to the outer circumference of the burner ring, a transfer ignition groove that is outwardly open on one side and extends between the inner circumference of the burner ring and the outer circumference of the burner ring, a gas conducting channel into which the transfer ignition groove opens at least partially, and at least one gas supply opening between the distribution chamber and the gas conducting channel, wherein the gas conducting channel and the transfer ignition groove are arranged mutually symmetrically, and wherein the at least one gas supply opening is offset in a region of the gas conducting channel at an angle relative to the transfer ignition groove.
    Type: Grant
    Filed: November 12, 2007
    Date of Patent: August 21, 2012
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Christophe Cadeau, Jörn Naumann
  • Patent number: 8246343
    Abstract: In one embodiment, a method for generating heat energy includes injecting a stream having a concentration of at least 50% oxygen (O2 stream) into a primary gas stream through a mixer, the mixer discharging the O2 stream as two or more spaced jets traversing the primary stream, thereby enriching the primary gas stream. The method further includes mixing fuel with the enriched primary gas stream, thereby forming a fuel stream; and combusting the fuel stream, thereby forming a flue gas stream.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: August 21, 2012
    Assignee: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: M. Usman Ghani, Florian Gautier, Rajani K. Varagani, Susie Levesque, Bernard Labegorre, Frederic Camy-Peyret, Sylvain Grillon, Pavol Pranda
  • Publication number: 20120208133
    Abstract: The invention provides systems and methods for multi-stage burners. The burner may accept a variable input fuel stream, which may be divided into a plurality of output fuel streams. The fuel stream may be divided by a pressure-actuated flow separator that may distribute an increasing amount of fuel to a secondary flow stream as the input flow rate of the input fuel stream increases. One or more of the output streams may be conditioned to provide a desired flame characteristic. The multi-stage burners may be decorative burners, and may be used for theatrical displays or other fire displays.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 16, 2012
    Inventor: Mike THIELVOLDT
  • Patent number: 8241034
    Abstract: In certain embodiments, an apparatus includes a control valve for regulating fuel flow. The apparatus can include a burner and a valve assembly. In some embodiments, the valve assembly includes a housing, which can define a first fuel input for receiving a first fuel from a first fuel source and a second fuel input for receiving a second fuel from a second fuel source. The housing can define a first fuel output for directing fuel toward the control valve, and can define a third fuel input for receiving a portion of either the first fuel or the second fuel from the control valve. The housing can define a first egress flow path and a second egress flow path, each for directing fuel to the burner. In certain embodiments, the apparatus includes a valve body configured to selectively permit fluid communication between the first and second inputs and the output and between the third input and the egress flow paths.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: August 14, 2012
    Assignee: Continental Appliances Inc.
    Inventor: David Deng
  • Patent number: 8235708
    Abstract: A heater can be configured to operate with either a first fuel at a first pressure or a second fuel at a second pressure and can include an elongated tubular combustion chamber, a first combustion chamber nozzle outlet, a second combuston chamber nozzel outley, and a fluid flow controller. In some embodiments, the fluid flow controller is configured to direct the first fuel to the first combustion chamber nozzle outlet and then to the second combustion chamber nozzle ourlet when the controller is in a first position. In a second position, the fluid flow controller is configured to direct the second fuel to the second combustion chamber nozzle outlet.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: August 7, 2012
    Assignee: Continental Appliances, Inc.
    Inventor: David Deng
  • Patent number: 8221116
    Abstract: Gas burner provided with a plurality of concentric flame crowns, and comprising a first central burner to supply a peripheral flame ring, a second annular burner surrounding the central burner at a defined distance and able of supplying at least a respective peripheral ring, a burner body apt to be mounted on the surface of a cooking hob, a first gas inlet in communication with the body, a first vertical gas injector, the central burner being provided with a first chamber for the diffusion of the air/gas mixture, a second gas inlet in communication with the body, wherein the second annular burner is provided with two separate chambers for the diffusion of the mixture, wherein the second gas inlet is in communication with the two separate chambers through suitable injection and conveying means, which comprise two distinct injectors in communication with the second gas inlet, and two respective horizontal Venturi pipes each of which being able of supplying with the air/gas mixture a respective of the two diffus
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: July 17, 2012
    Assignee: Electrolux Home Products Corporation N.V.
    Inventors: Nico Biagioli, Piero Armanni, Marco Starnini, Cedric Catalogne
  • Publication number: 20120167583
    Abstract: A method for starting a burner for combusting synthesis gases is provided. The burner includes first and second fuel passages, the first fuel passage encompasses the second fuel passage in a substantially concentric manner and the gas transferred to the burner is mixed with combusting air and is combusted. In order to start the burner, the second fuel passage is first loaded with a synthesis gas to a predefined burner power at a first starting phase and the first fuel passage is loaded with the synthesis gas at a second starting phase.
    Type: Application
    Filed: March 14, 2012
    Publication date: July 5, 2012
    Inventors: Berthold Köstlin, Frank Hannemann, Andreas Heilos, Gerhard Zimmermann
  • Patent number: 8209971
    Abstract: The present disclosure provides a burner for increasing the temperature of a gas stream, such as an exhaust gas stream, to burn particulate matter and unburnt hydrocarbons within the exhaust gas. As well, by heating or increasing the temperature of the gas stream and combustion products exiting the burner, the gas stream is brought into a condition more suitable for additional treatment to further reduce exhaust gas emissions from the engine. The device includes an outer housing and a series of combustion chambers mounted within the outer housing for increasing and further developing combustion of the incoming gases within the series of combustion chambers. A primary application for the device is for use with diesel engines to burn particulate matter and unburnt hydrocarbons within the diesel emissions and/or act as a heat source for activating diesel particulate filters and/or other catalytic components or devices.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: July 3, 2012
    Assignee: Nett Technologies Inc.
    Inventors: Keivan Kalantarifiroozabad, Janusz Popik
  • Patent number: 8206149
    Abstract: A description is given of a burner for introducing solid, liquid or gaseous fuel into the burning zone of a kiln, such as rotary kiln for manufacturing cement clinker or “similar materials, said burner comprising a burner pipe (1) which encircles a number of ducts for conveying fuel and combustion air through the burner. The burner is characterized in that the burner pipe (1) is made up of modules (1a, 1b) which are fixed to another by fixing means (9) which will allow non-destructive assembly and disassembly of the modules. Hereby is obtained a burner in which it will be possible in a simple and non-destructive manner to disassembly the burner pipe (1) in modules (1a, 1b) in direction from the free end of the burner (7) or the burner tip.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: June 26, 2012
    Assignee: Flsmidth A/S
    Inventors: Ib Ohlsen, Lars Skaarup Jensen, Erik Jepsen, Ejvind Rödtnes Jörgensen