Controlling Or Proportioning Feed Patents (Class 431/12)
  • Patent number: 10378764
    Abstract: A system for boiler control is provided. The system includes supply units to provide supplies of combustion materials for combustion thereof, a vessel coupled to the supply units in which the combustion materials are combusted, a carbon monoxide (CO) sensor disposed at an outlet of the vessel to sense a quantity of exhaust CO output from the vessel as a product of combustion therein and a control unit. The control unit is coupled to the supply units and the sensor and configured to issue a main servo command and a pulse servo command to one or more of the supply units to control operations of the one or more supply units in accordance with the sensed quantity of the exhaust CO.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: August 13, 2019
    Assignee: UTC FIRE & SECURITY CORPORATION
    Inventor: Christoph Haugstetter
  • Patent number: 10352562
    Abstract: The present disclosure deals with the measurement of flows of a fluid in a combustion device. In particular embodiments, the teachings may be employed in the measurement of flows of fluids such as air in the presence of turbulence. For example, a combustion device may include: a burner; a side duct; and a feed duct. The side duct may include a mass flow sensor and a flow resistance element. The mass flow sensor detects a mass flow through the side duct. The flow resistance element subdivides the side duct. A connector of the feed duct comprises a Pitot probe. A first section of the Pitot probe projects into the feed duct and a sub area facing towards the outlet of the feed duct of the first section of the Pitot probe comprises the inlet of the Pitot probe.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: July 16, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Rainer Lochschmied, Mike Schmanau, Bernd Schmiederer
  • Patent number: 10260746
    Abstract: The present disclosure deals with the measurement of flows of a fluid in a combustion device. For example, a combustion device may include a burner; a combustion chamber; a side duct; and a feed duct with a connector for the side duct including a mass flow sensor and a flow resistance element. The side duct and the feed duct have a fluid connection to one another. The mass flow sensor senses a mass flow through the side duct. The resistance element subdivides the side duct and includes an admittance surface. There is an outer area. The mass flow sensor projects into the side duct. The outlet of the side duct lets the fluid flow out of the side duct directly into the combustion chamber or directly into the outer area.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: April 16, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Rainer Lochschmied, Mike Schmanau, Bernd Schmiederer
  • Patent number: 10233835
    Abstract: This IGCC plant is provided with an ASU which separates oxygen gas and nitrogen gas from air, a coal gasification furnace which uses an oxidizing agent to gasify coal, and a gas turbine which is driven by the combustion gas resulting from burning a gas generated by means of the coal gasification furnace. This IGCC plant control device (50) is provided with an air separation amount determination unit (52) which determines the production amount of nitrogen gas produced by the ASU depending on the operating load of the IGCC plant, and supplies to the coal gasification furnace the entire amount of oxygen gas generated as a byproduct in response to the determined nitrogen gas production amount. By this means, the IGCC plant can minimize blow-off of oxygen gas produced from the air.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: March 19, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Ken Tamura, Takashi Fujii, Takanori Tsutsumi, Takashi Kijima
  • Patent number: 10234143
    Abstract: A method for operating a forced aspiration gas cooking appliance is provided. The method includes connecting the forced aspiration gas cooking appliance to a network and establishing a location of the forced aspiration gas cooking appliance based at least in part on a location characteristic of the network. An altitude of the forced aspiration gas cooking appliance is determined based at least in part on the location of the forced aspiration gas cooking appliance.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: March 19, 2019
    Assignee: Haier US Appliance Solutions, Inc.
    Inventor: Paul Bryan Cadima
  • Patent number: 10232310
    Abstract: A multi-function duct for a dry scrubber system useful for processing a gas stream, such as a flue gas stream produced by a fossil fuel fired boiler, a combustion process or the like, is provided. The multi-function duct is useful for a circulating dry scrubber (CDS) dry flue gas desulfurization (DFGD) system operable for dry or moistened reducing agent distribution into a flue gas stream flowing therethrough. As such, the distributed dry or moistened reducing agent reacts with acid gas in the flue gas to produce a dry reaction product.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: March 19, 2019
    Assignee: General Electric Technology GmbH
    Inventors: Bennie Randolf Hubard, IV, Mark Albert Fiedler
  • Patent number: 10228139
    Abstract: A method for operating a gas turbine engine during flight operation of the gas turbine engine in an aircraft may include measuring a gas temperature downstream of the combustor using a plurality of temperature measurement devices circumferentially disposed about an engine centerline and varying the output of at least one fuel injector in a first direction and the output of at least another fuel injector in a second direction, while maintaining a thrust output of the gas turbine engine during the flight operation. A gas turbine engine may include temperature measurement devices circumferentially disposed about an engine centerline and a system configured for varying the output of at least one fuel injector in a first direction and the output of at least another fuel injector in a second direction, while maintaining a power output of the gas turbine engine. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for gas turbine engines.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: March 12, 2019
    Assignee: Rolls-Royce Corporation
    Inventor: William G. Cummings, III
  • Patent number: 10190772
    Abstract: The present invention provides a dual fuel ignition device and a work method thereof, wherein the ignition device can output electric potential according to the opposite in-series connection of two thermocouples in a high-heating value gas igniting end and a low-heating value gas igniting end and the heating condition of the thermocouples, and can control the switching on or off of a control valve on a gas flow according to the effective heat electric potential generated by the thermocouples in the process of ignition, so as to avoid the danger condition that the main burner generates high fire caused by the misoperation of the gas appliance, therefore, the safe use can be guaranteed.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: January 29, 2019
    Assignee: ZHEJIANG FUERJ ELECTRIC SCIENCE AND TECHNOLOGY CO. LTD.
    Inventors: Jianfu Luo, Xueqing Zhao
  • Patent number: 10139106
    Abstract: A method for controlling the operation of a burner, the burner including a control board with a first control unit and a first memory, which stores first values of operating parameters of the burner, and a display device, which displays one or more items of data relating to the functioning of the burner, the display device including a second memory, which stores second values of operating parameters of the burner, each first and second operating parameters being capable of being changed over time. The method includes setting for each operating parameter at least one first value in the first memory, and at least one second value in the second memory; comparing, for each operating parameter, a corresponding first value and second value; if the first value and the second value are different, changing one of the first or second values, so that the first and second values are the same.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: November 27, 2018
    Assignee: SIT S.P.A.
    Inventor: Antonio Vendramini
  • Patent number: 9995225
    Abstract: Present invention optimizes utilization of different fuels in various single and multi-fueled engines. The fuel system and optimization controller links fuel properties (physical, reactionary, combustion etc.) to on-board computer systems during the refueling process. This link enables fuel and additive producers an opportunity to optimize combustion parameters of their proprietary fuel blends to increase performance, fuel efficiencies and reduce emissions.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: June 12, 2018
    Assignee: Optimus Technologies, LLC
    Inventors: Colin N. Huwyler, David S. Rosenstraus
  • Patent number: 9995488
    Abstract: A combustion chamber including a first fuel injector and a second fuel injector, the first and second fuel injectors being arranged to inject fuel into a mainstream flow of air with the second fuel injector arranged downstream of the first fuel injector. A method of mixing fuel and air in a combustion chamber, including injecting fuel into a mainstream flow of air with a first fuel injector; injecting fuel into the mainstream flow of air with a second fuel injector, which is arranged downstream of the first fuel injector; injecting fuel into the mainstream flow with the first fuel injector such that the resulting mixture between the first and second fuel injectors has an equivalence ratio less than the lean flame stability limit; and injecting fuel into the mainstream flow with the second fuel injector such that a combustion zone is provided downstream of the second fuel injector.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: June 12, 2018
    Assignee: ROLLS-ROYCE plc
    Inventor: Stephen C. Harding
  • Patent number: 9958158
    Abstract: The burner preferably exclusively burns substantially explosible solid fuels and preferably has instant ON-OFF thermostat control, wastes no energy preheating the enclosure or external air supply, achieves stable combustion the moment the powder-air mix is ignited in our burner, is used in the upward vertical mode except for oil burner retrofits, burns a solid fuel in a single-phase regime as if it were a vaporized liquid or gas, is designed to complete combustion within the burner housing itself rather than in a large, high temperature furnace enclosure which it feeds, has an ultra-short residence time requirement, is a recycle consuming burner with self-contained management of initially unburned particles, is much smaller, simpler and lower cost, has a wider dynamic range/turndown ratio, is more efficient in combustion completeness and thermal efficiency, and operates with air-fuel mix approximately at the flame speed.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: May 1, 2018
    Inventors: James K. McKnight, Edward Bacorn, Ken W. White
  • Patent number: 9897315
    Abstract: A safety device against gas leaks for an apparatus having at least one gas tap or the like (1) includes control means (11), safety means (22) and detection means (12, 53), for detecting possible presence of gas in a surrounding environment. The detection means (12, 53) are in signal communication with the control means (11), which are configured for controlling the safety means (22) in function of detections earned out by the detection means (12, 53), in order to prevent or interrupt the inflow of combustible gas to a burner. The control means (11) and the safety means (22) belong to a first functional unit (A) of the device (A, B), which is coupled or configured for the coupling with a portion of the body (2) of the tap (1).
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: February 20, 2018
    Assignee: ELTEK S.p.A.
    Inventors: Fabio Nebbia, Costanzo Gadini
  • Patent number: 9822707
    Abstract: A vent for use in a gaseous fuel supply circuit of a gas turbine is provided. The vent includes an inlet in flow communication with the gaseous fuel supply circuit, a first outlet in flow communication with the gaseous fuel supply circuit and configured to release gaseous fuel at atmospheric pressure, a first valve coupled between the inlet and the first outlet, wherein the first valve includes a second outlet configured to channel the gaseous fuel towards a combustion device. The system also includes a second valve coupled between the inlet and the second outlet, and a control device configured to selectively open and close the first and second valves based on a pressure of the gaseous fuel.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: November 21, 2017
    Assignee: General Electric Company
    Inventors: Yann Tapie, Cedric Vasselon, Olivier Schweiger, Olivier Chapuis
  • Patent number: 9765964
    Abstract: A system for boiler control is provided. The system includes supply units to provide supplies of combustion materials for combustion thereof, a vessel coupled to the supply units in which the combustion materials are combusted, a carbon monoxide (CO) sensor disposed at an outlet of the vessel to sense a quantity of exhaust CO output from the vessel as a product of combustion therein and a control unit. The control unit is coupled to the supply units and the sensor and configured to issue a main servo command and a pulse servo command to one or more of the supply units to control operations of the one or more supply units in accordance with the sensed quantity of the exhaust CO.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: September 19, 2017
    Assignee: UTC FIRE & SECURITY CORPORATION
    Inventor: Christoph Haugstetter
  • Patent number: 9719682
    Abstract: The present invention relates to methods and systems for controlling a combustion reaction and the products thereof. One embodiment includes a combustion control system having an oxygenation stream substantially comprising oxygen and CO2 and having an oxygen to CO2 ratio, then mixing the oxygenation stream with a combustion fuel stream and combusting in a combustor to generate a combustion products stream having a temperature and a composition detected by a temperature sensor and an oxygen analyzer, respectively, the data from which are used to control the flow and composition of the oxygenation and combustion fuel streams. The system may also include a gas turbine with an expander and having a load and a load controller in a feedback arrangement.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: August 1, 2017
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Franklin F. Mittricker, Loren K. Starcher, Chad C. Rasmussen, Richard A. Huntington, Frank Hershkowitz
  • Patent number: 9714765
    Abstract: The invention provides a burner configured for use with a dryer for drying aggregates, the burner comprising: a burner chamber (3) is which is mounted a fuel-atomizing burner nozzle (3.32) and means for conveying fuel to the burner nozzle; means providing a flow of air through the burner chamber and into the combustion chamber; a combustion chamber (4) in which the fuel is burnt; the combustion chamber (4) having an opening at an upstream end thereof communicating with the burner chamber (3) and an opening at a downstream end thereof for passing combustion gases and heated air into a drying chamber of the dryer; the burner nozzle (3.32) being arranged to direct a flow of atomized fuel into the combustion chamber; a first airflow modifier device (3.11) mounted in or across the opening at the upstream end of the combustion chamber such that there is a gap constituting an air escape channel around a periphery of the first airflow modifier device, the first airflow modifier device (4.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: July 25, 2017
    Inventor: Ian Brian Lewis
  • Patent number: 9476589
    Abstract: A method supplies reactants, including fuel gas, to burners that discharge the reactants into a furnace process chamber. In a stable flame mode of operation, stable flames are projected from the burners into the furnace process chamber. At a time when the furnace process chamber has a temperature at or above an autoignition temperature of the fuel gas, a diffuse combustion mode is initiated by supplying a selected burner with additional reactants, including reactants diverted from another burner, to blow off the stable flame at the selected burner.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: October 25, 2016
    Assignee: Fives North American Combustion, Inc.
    Inventor: John N. Newby
  • Patent number: 9447966
    Abstract: A burner is provided. The burner includes an air compressor, an atomizing head having an air orifice, first and second fuel tanks, the first fuel tank being located at least partially below the atomizing head, and the second fuel tank being located at least partially above the atomizing head, a first fluid pathway connecting the air compressor to the air orifice of the atomizing head, a second fluid pathway having a first end configured to receive air from the air compressor, and a second end extending into the first fuel tank, a third fluid pathway connecting from the first fuel tank to the second fuel tank, and a fourth fluid pathway connecting the secondary fuel tank to a distribution point above the atomizing head. The second and third fluid pathway define at least a portion of a bubble pump. The burner is configured to use air from the air compressor to both (a) deliver fuel to the atomizing head, and (b) atomize the delivered fuel at the atomizing head.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: September 20, 2016
    Assignee: BABINGTON TECHNOLOGY LLC
    Inventor: Robert S. Babington
  • Patent number: 9416965
    Abstract: The present invention relates to a burner for a furnace with the following features: a first feed for at least one fuel, preferably with a primary outlet for an oxidizing agent, preferably oxygen; a second feed, surrounding the first feed, with at least one secondary outlet for the oxidizing agent; a third feed, surrounding the second feed, with at least one enveloping jet outlet for the oxidizing agent, wherein the second feed and the third feed are designed such that a first velocity with which the oxidizing agent emerges from the at least one secondary outlet is greater than a second velocity with which the oxidizing agent emerges from the at least one enveloping jet outlet. The second feed thereby preferably enables a first volumetric flow of the oxidizing agent that is greater than or equal to a second volumetric flow of the oxidizing agent through the third feed.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: August 16, 2016
    Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Dietmar Wieck, Christian Windhovel
  • Patent number: 9393524
    Abstract: An engine exhaust treatment device is capable of combusting PM accumulated in a DPF or activating an exhaust purification catalyst even immediately after engine startup or at the time of light load operation. A combustible gas supply passage (8) communicates with an exhaust passage (4) on an upstream of a combustion catalyst (5). An air supply unit (9) and an ignition unit (10) are provided in this supply passage and interlocked with a control unit (11). Where a temperature of the exhaust is lower than a predetermined temperature, the control unit supplies air (12) to a combustible gas by the air supply unit (9) and causes ignition of the combustible gas by the ignition unit (10), so as to cause flame combustion of the combustible gas. The temperature of the exhaust (6) in the exhaust passage (4) is increased by heat of this flame combustion.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: July 19, 2016
    Assignee: KUBOTA Corporation
    Inventors: Keita Naito, Toshio Nakahira, Yoshikazu Takemoto, Takashi Onishi
  • Patent number: 9353945
    Abstract: A control system for an oxy-fuel combustion process is disclosed for use with a boiler or furnace which dynamically controls the flame temperature of each burner involved in the combustion process to dynamically maximize the flame temperature. The boiler or furnace used in conjunction with the combustion process in accordance with the present invention is configured with a radiant, i.e. line of sight, heat zone and a convective heat zone. By dynamically maximizing the flame temperature of the various burners within the boiler or furnace, the radiant heat transfer is optimized. By optimizing the radiant heat transfer within the boiler or furnace, the efficiency of the boiler or furnace is significantly improved.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: May 31, 2016
    Assignee: Jupiter Oxygen Corporation
    Inventors: Dietrich M. Gross, Brian R. Patrick, Mark Schoenfield
  • Patent number: 9341378
    Abstract: Cooking appliance having an external control panel equipped with one or more regulating valves, where the rotary regulator organ is equipped with various peripheral openings for supplying a flow Q. For the supply of one or another type of gas, NG or LPG, either the control knob or a bezel disk in the external panel are interchangeable on the appliance, being chosen between two different available units, one and the other permitting two different angular position limits A2, A3 of the regulator organ or the supply of a constant flow Qmin through one or another opening with calibrated sections, respectively for NG or LP gas. An appendix in the control knob guided in a slide groove on the control panel of the appliance, or a tongue on the bezel disk stopping the rotation of the control knob, determines the travel limit A2 for the supply of Qmin of NG.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: May 17, 2016
    Assignee: Coprecitec, S.L.
    Inventor: Iñigo Albizuri
  • Patent number: 9285123
    Abstract: A burner system with staged fuel injection includes at least one burner with a mixing zone. A combustion chamber is disposed downstream of the mixing zone and a first fuel introduction device is provided upstream of the mixing zone. Furthermore, a second fuel introduction device for the direct injection of fuel into the combustion chamber, is disposed downstream of the mixing zone. In addition, at least one sensor for determining combustion parameters is connected to a control device. The control device is designed to control the second fuel introduction device as a function of the parameters determined by the sensors.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: March 15, 2016
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Mauricio Ernesto Garay, Stefano Bernero, Bruno Schuermans, Martin Zajadatz
  • Patent number: 9028247
    Abstract: A combustion chamber is provided and includes a combustion device and a supply circuit arranged to feed fuel at a plurality of locations of the combustion device. The supply circuit includes manifolds collecting fuel to be distributed among at least some of the locations, ducts extending from the manifolds and feeding the locations. Some of the ducts carry valves having a plurality of predetermined working positions, each working position corresponding to a different fuel flow through the valve.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: May 12, 2015
    Assignee: Alstom Technology Ltd
    Inventors: Piotr Siewert, Rudolf Lachner
  • Patent number: 9028246
    Abstract: The present invention relates to a residual gas burner (13) for a fuel cell system (1) having to educt gas feeds (11, 12) for feeding an educt gas each to a combustion chamber (14) of the residual gas burner (13). An improved operation of the residual gas burner (13) is obtained when the educt gas feeds (11, 12) each comprise outlet openings (22, 27), wherein the outlet openings (22, 27) face the combustion chamber (14) and the outlet openings (22, 27) of one of the educt gas feeds (11, 12) face a first bottom surface (29) of the other educt gas feed (11, 12). In addition, the invention relates to a fuel cell system (1) having such a residual gas burner (13).
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: May 12, 2015
    Assignee: Eberspaecher Climate Control Systems GmbH & Co. KG
    Inventor: Samuel Brandt
  • Patent number: 9028245
    Abstract: A method is provided for the automated setup of a metered combustion control system for controlling operation of a boiler combustion system. The automated setup process includes both commissioning and controller tuning, rather than tuning the carbon monoxide and/or oxygen trim controller after the commissioning process has been completed. The oxygen trim controller or the carbon monoxide trim controller is used to identify the air/fuel ratio.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: May 12, 2015
    Assignee: UTC Fire & Security Corporation
    Inventors: Junqiang Fan, Muhidin A. Lelic
  • Publication number: 20150122134
    Abstract: A control device for gas appliances comprises at least one control module (20) having a supporting structure that can be associated to a gas tap (10) and defines a housing, contained within which is at least one first part of a circuit arrangement. The control module (20) comprises a command element operable by a user for activating at least one timing function and/or a function of ignition of a gas burner. The first part of the circuit arrangement comprises control elements, electrical-interconnection elements, and detection elements (45) configured for detecting actuation of the command element and supplying corresponding signals to the control elements. The circuit arrangement comprises further control and/or command elements (PSD, IS, F, LE, BC, ISC) and/or an auxiliary module (PSD).
    Type: Application
    Filed: May 24, 2013
    Publication date: May 7, 2015
    Applicant: ELTEK S.p.A
    Inventors: Marco Moro, Paolo Savini
  • Patent number: 9017067
    Abstract: A premix burner arrangement for safely oxygen-enriching a premix air-fuel combustion system is disclosed. In the disclosed burner arrangement, a first conduit is arranged and disposed to provide a first gas stream. The first gas stream is a self-reactive or self-flammable premixture comprising air and a combustible gas. At least one second conduit is arranged and disposed to provide a second gas stream circumferentially around the first gas stream. The second gas stream includes oxygen. The premix burner arrangement is configured to combust or react the first stream at a temperature at least 1000° F. greater than the temperature of the second stream. A method and combustion system including the premix burner arrangement are also disclosed.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: April 28, 2015
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Jin Cao, Aleksandar Georgi Slavejkov, Shailesh Pradeep Gangoli, Jeffrey D. Cole
  • Patent number: 9011140
    Abstract: A remotely actuated pilot gas valve includes safe lighting and complete shutoff capabilities in the event that the flame that is heating a thermocouple is extinguished. The invention provides for a heater system that utilizes such a pilot gas valve as well as a method whereby the pilot gas valve used in such a system can be remotely and electronically actuated when required. Remote actuation is accomplished by use of a solenoid that is incorporated within the valve design and which is controlled by a remote operator.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: April 21, 2015
    Assignee: Baso Gas Products, LLC
    Inventor: Brent J. Carlson
  • Patent number: 9004912
    Abstract: A combustor includes an end cap having an upstream surface axially separated from a downstream surface. A cap shield circumferentially surrounds the upstream and downstream surfaces, tubes extend from the upstream surface through the downstream, and a plenum is inside the end cap. A first baffle extends radially across the plenum toward the cap shield, and a plate extends radially inside the plenum between the first baffle and the upstream surface. A method for supplying fuel to a combustor includes flowing a working fluid through tubes, flowing a fuel into a plenum between upstream and downstream surfaces, radially distributing the fuel along a first baffle, and axially flowing the fuel across a plate that extends radially inside the plenum.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: April 14, 2015
    Assignee: General Electric Company
    Inventors: Lucas John Stoia, Patrick Benedict Melton, James Harold Westmoreland, III
  • Publication number: 20150099233
    Abstract: A combustion system comprises a combustion chamber and a flue gas duct located downstream of the combustion chamber to receive combustion products from the combustion chamber, the combustion chamber has a base and an enclosing wall connecting the base to the flue gas duct. The combustion chamber is provided with a plurality of combustion devices, the combustion devices being configured to deliver fuel and gas and/or air into the combustion chamber so as to generate a fireball within a combustion zone in the combustion chamber, the combustion devices further being configured such that the generated fireball rotates about an axis extending between the base and the flue duct. A secondary gas and/or air nozzle is provided in the base of the combustion chamber, at a location upstream of the combustion zone, the nozzle being for delivering gas and/or air into the combustion zone in a direction towards the flue duct.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 9, 2015
    Inventors: John GOLDRING, Steven BILLETT, Lawrence BERG
  • Patent number: 8992210
    Abstract: A burner for diluted combustion includes a fuel nozzle for supplying fuel to a combustion chamber, at least one air nozzle for supplying air to the combustion chamber, and at least one oxygen nozzle for supplying oxygen to the combustion chamber. The air nozzle and oxygen nozzle are spatially separated from each other.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: March 31, 2015
    Assignee: Linde Aktiengesellschaft
    Inventors: Martin Adendorff, Stefan Rudig
  • Patent number: 8985999
    Abstract: A heating, ventilation, and/or air conditioning (HVAC) furnace has a venturi premixer and a disturber disposed downstream relative to the premixer and in an undivided output of the venturi premixer.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: March 24, 2015
    Assignee: Trane International Inc.
    Inventors: Lester D. Sherrow, Jeffery Wayne O'Daniel, Deepak Veettil, Wayne Kraft
  • Publication number: 20150079526
    Abstract: An oxy-combustion boiler unit is disclosed which includes a furnace for combusting fuel and for emitting flue gas resulting from combustion. The furnace has first, second and third combustion zones, and an air separation unit for separating oxygen gas from air and providing a first portion of the separated oxygen to a first oxidant flow, a second portion to a second oxidant flow, and a third portion of the separated oxygen gas to the first, second, and third zones of the furnace. A controller can cause the separated oxygen gas to be distributed so that the first and second oxygen flows have a desired oxygen content, and so that the first, second, and third zones of the furnace receive a desired amount of oxygen based on a combustion zone stoichiometry control.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 19, 2015
    Applicant: ALSTOM Technology Ltd
    Inventors: Xinsheng LOU, Jundong Zhang, Abhinaya Joshi, James A. Mccombe, Armand A. Levasseur
  • Publication number: 20150064632
    Abstract: A fluid fuel burning device, comprising: an elongated combustion compartment comprising side walls, where distal end is open allowing fluid communication from inside the combustion compartment and out of compartment; an insulation layer arranged on the inner surface of the side walls and/or on an inner surface of the proximal end of the compartment, preventing heat inside the compartment from radiating away from the compartment from the side walls and/or the proximal end, air flow means for providing a current of air, a fuel nozzle for aerification of the fluid fuel inside the combustion compartment, fuel feeding means for feeding fluid fuel to the fuel nozzle, pressure providing means for applying pressure to the fluid fuel fed via the fuel feeding means, and where the insulation layer comprises a heat absorbent layer that is of a temperature retentive material and radiating heat from the absorbent layer into the combustion compartment.
    Type: Application
    Filed: March 27, 2013
    Publication date: March 5, 2015
    Applicant: PURETEQ A/S
    Inventor: Dennis Søgaard
  • Patent number: 8969644
    Abstract: A method is proposed for providing an oxygen-containing gas stream for the endothermic reaction of an initial stream comprising one or more hydrocarbons, having a predetermined oxygen concentration and a predetermined temperature, wherein a fluid fuel stream is combusted with a primary air stream at ? values of the primary air stream to the fluid fuel stream of from 0.6 to 1.2 to obtain a combustion gas stream, and a secondary air stream is admixed to the combustion gas stream to obtain the oxygen-containing gas stream for the endothermic reaction, with the predetermined oxygen concentration and the predetermined temperature of the oxygen-containing gas stream being adjusted via the flow rate and the temperature of the secondary air stream.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: March 3, 2015
    Assignee: BASF SE
    Inventors: Gerhard Olbert, Franz Corr, Sven Crone
  • Patent number: 8961169
    Abstract: A method includes the steps of operating a regenerative burner in cycles, including a firing cycle in which fuel and combustion air are discharged from the burner into a process chamber, and a nonfiring cycle in which a quantity of gas is withdrawn from the process chamber through a regenerative bed associated with the burner. The method further includes steps of detecting and responding to a temperature that differs from a predetermined temperature at a location in the process chamber. In a first step of responding to the detected temperature, a flue damper system is operated to vary a flow of gas within the process chamber relative to the location of the detected temperature. A second step of responding to the detected temperature reduces the quantity of gas to be withdrawn from the process chamber through the regenerative bed in a subsequent nonfiring cycle.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: February 24, 2015
    Assignee: Fives North American Combustion, Inc.
    Inventors: John N. Newby, Thomas F. Robertson, Justin R. Dzik, William E. Tracey
  • Publication number: 20150050606
    Abstract: A method for regulating the combustible mixture such as air/gas, air/methane gas or the like fed to a burner, the method including measuring a flame signal correlated with the composition of the mixture fed by feed members controlled by a combustion controller arranged to regulate the combustion on the basis of the flame signal. During burner operation the mixture feed conditions are modified within a narrow time interval to obtain a flame signal variation; a ratio between values of this the flame signal at the end and at the beginning of the interval is compared with a predetermined reference value; and, on the basis of the deviation of this ratio from the reference value, the flame set point is regulated, as consequently is the air or gas of the mixture if this is rendered necessary.
    Type: Application
    Filed: March 12, 2013
    Publication date: February 19, 2015
    Inventor: Pierluigi Bertelli
  • Patent number: 8956154
    Abstract: Methods and systems for conversion of a carbon containing fuel to CO2 and H2O. An air stream is fed to a first ion transport membrane unit obtaining a pure oxygen stream from a permeate side and an air stream with a reduced oxygen content from a retentate side. The air stream with a reduced oxygen content is fed to a second ion transport membrane unit and a gaseous first carbon containing fuel is fed to a permeate side of the second ion transport membrane. The first carbon containing fuel is reacted with oxygen transported through the second ion transport membrane forming an at least partially combusted first fuel. The at least partially combusted first fuel, at least a part of the pure oxygen stream and optionally a second carbon containing fuel is fed to a combustion chamber for combustion. An exhaust stream comprising essentially CO2 and H2O is obtained.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: February 17, 2015
    Assignee: Nebb Engineering AS
    Inventor: Martin Siljan
  • Patent number: 8951039
    Abstract: The object of the invention is to provide a lightweight mechanism that changes the distribution of a flow rate of air for combustion supplied into each burner, without providing a mechanical movable part in a passage for high-temperature and high-pressure air for combustion in a combustor having a plurality of burners such as a pilot burner and a main burner. The combustor equipped with an air flow rate distribution control mechanism based on a fluidic element in accordance with the present invention has a plurality of burners such as a main burner and a pilot burner, wherein with the fluidic element being disposed upstream of a passage of air for combustion that is supplied to each burner, and means for sucking out or blowing out air into a control air passage of the fluidic element being provided, the distribution of a flow rate of the air flowing into the burners is controlled by changing a flow direction of the air for combustion.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: February 10, 2015
    Assignee: Japan Aerospace Exploration Agency
    Inventors: Seiji Yoshida, Yoji Kurosawa, Takeshi Yamamoto, Kazuo Shimodaira
  • Publication number: 20150037744
    Abstract: A method for controlling a fuel supply to a plurality of burners of a burner group includes determining a temperature in the burner group as a control variable. The fuel supply to the burners of the burner group is specified in dependence on a control deviation of the temperature determined in the burner group to a specified setpoint temperature. The fuel supply is a common mean fuel supply that is specified for all of the burners of the burner group by a temperature master controller. The fuel supply is corrected for each of the burners or burner subgroups of the burner group. Each of the burners or the burner subgroups have a fuel supply slave controller. The fuel supply slave controllers use at least, one disturbance variable associated to the respective burner or the respective burner subgroup so as to perform the correcting.
    Type: Application
    Filed: February 14, 2013
    Publication date: February 5, 2015
    Inventors: Karl Semiller, Wolfgang Selt, Michael Stroeder
  • Publication number: 20150030986
    Abstract: Servo gas system (11) for a gas burner (10), namely for controlling a pressure regulation valve (20) positioned in a gas duct (18) of the gas burner, thereby controlling a gas pressure within the gas duct (18) being present downstream of the pressure regulation valve (20) and thereby controlling a pressure difference between a pressure in a burner chamber (12) of the gas burner and said gas pressure within the gas duct (18), the servo gas system (11) comprising a static servo gas flow branch (28) and a dynamic servo gas flow branch (29) being connected in parallel, and a flow sensing element (30) being connected between the static servo gas flow branch (28) and the dynamic servo gas flow branch (29) and providing a signal used to control the pressure regulation valve (20) by an electric actuator (41).
    Type: Application
    Filed: July 29, 2014
    Publication date: January 29, 2015
    Inventor: Willem Super
  • Publication number: 20150020692
    Abstract: In the method for operating a gas oven, this has a muffle with a lower gas burner and with an upper gas burner, wherein for its control, an electronic control unit is provided for actuating two gas valves and for igniting the gas burners and also for flame monitoring. For a combination operation with upper heat and lower heat in the muffle, the upper gas burner and the lower gas burner are operated alternately to each other in each case with heating phases.
    Type: Application
    Filed: July 11, 2014
    Publication date: January 22, 2015
    Inventors: Marcus Frank, Rolf Seeburger
  • Patent number: 8931707
    Abstract: An appliance comprises a burner and a compressor for supplying pressurized air to the burner in order to create a low-pressure area for siphoning fuel to the burner. A flame sensor senses for the presence or absence of a flame in the burner and a temperature sensor senses an actual temperature of the appliance. There is a controller in communication with the temperature sensor. The controller shuts off the compressor and overrides the flame sensor such that the appliance acts as if a flame is present when the temperature sensor senses that the actual temperature of the appliance is greater than a maximum threshold temperature. The controller starts up the compressor overriding the flame sensor such that the appliance acts as if a flame is absent when the temperature sensor senses that the actual temperature of appliance is less than a minimum threshold temperature.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: January 13, 2015
    Assignee: Marine Canada Acquisition Inc.
    Inventors: Bruce Wilnechenko, Alex Schwartzman, Angelo Faccone
  • Patent number: 8926318
    Abstract: A cooking appliance a gas burner configured to generate a quantity of heat is disclosed. The cooking appliance also includes a pressure sensor operable to measure the pressure of gas supplied to the gas burner from a gas control valve. The gas control valve is operable to adjust the supply of gas to the gas burner based on the measured pressure of the gas.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: January 6, 2015
    Assignee: Whirlpool Corporation
    Inventors: William D. Barritt, Mark A. Pickering
  • Patent number: 8926317
    Abstract: Method of controlling the operation of a combustion device to provide safe and reliable operation while reducing NOx emission that includes providing a flow of fuel and diluent at a determined volume ratio to a flame in the combustion device; providing a flame stability sensor to generate a measurement of a characteristic of the flame, providing a flow measurement for each of the fuel and diluent, and controlling the determined volume ratio of fuel:diluent using the measurement from the flame stability sensor and/or flow measurements. A combustion system incorporating this method also is included.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: January 6, 2015
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: John T. Farrell, San Chhotray, Gary T. Dobbs, Manuel S. Alvarez, Patrick D. Schweitzer
  • Patent number: 8925541
    Abstract: A furnace includes an induced draft blower; an inducer motor driving the induced draft blower; and a furnace control determining a modulation percentage, the furnace control controlling RPM of the inducer motor in response to the modulation percentage.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: January 6, 2015
    Assignee: Carrier Corporation
    Inventor: Kevin D. Thompson
  • Publication number: 20150000344
    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: September 15, 2014
    Publication date: January 1, 2015
    Inventor: Mark William Charbonneau
  • Patent number: 8919337
    Abstract: A system having a pre-mix burner manifold in a housing that may permit air to be drawn through slots in the housing to flow over an external surface of the manifold. The flow of air may maintain a temperature of the manifold lower than a temperature that the manifold might have without the flow. The manifold may be attached to a burner and heat exchanger.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: December 30, 2014
    Assignee: Honeywell International Inc.
    Inventors: Michael W. Schultz, Douglas Perry, James E. Erickson