With Means Attenuating Sound Or Pulsation Patents (Class 431/114)
  • Patent number: 11162677
    Abstract: An air intake coupling has at least one noise suppression hole formed therein. A gas-air mixer elbow is fluidly coupled to the air intake coupling. A burner box assembly is fluidly coupled to the gas-air mixer elbow via a gas-air plenum box. A heat-exchange tube has a first end that is fluidly coupled to the burner box assembly. A fan is fluidly coupled to a second end of the heat-exchange tube via a cold-end header box.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: November 2, 2021
    Assignee: Lennox Industries Inc.
    Inventors: Leonor Beakley, Darcy Q. Easterling
  • Patent number: 11053590
    Abstract: A nozzle for uniform plasma processing comprises an inlet portion and an outlet portion. The inlet portion has a side surface substantially parallel to a vertical axis. The inlet portion comprises a plurality of gas channels. The outlet portion is coupled to the inlet portion. The outlet portion comprises a plurality of outlets. At least one of the outlets is at an angle other than a right angle relative to the vertical axis.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: July 6, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Rohit Mishra, Siva Suri Chandra Rao Bhesetti, Eng Sheng Peh, Sriskantharajah Thirunavukarasu, Shoju Vayyapron, Cheng Sun
  • Patent number: 10989407
    Abstract: A flare gas assembly having an air pipe with an upper open end, a first conduit in surrounding relationship to the air pipe and having a first conduit upper end, a second conduit in surrounding relationship to the first conduit and having a second conduit upper end, and a third conduit in surrounding relationship to the second conduit and having a third conduit upper end, the upper ends of the air pipe, the first conduit and the second conduit being below the upper end of the third conduit, there being an air source connected to the air pipe to provide air to the air pipe at a desired flow rate.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: April 27, 2021
    Inventor: David Bacon
  • Patent number: 10663170
    Abstract: A flow conditioner in a combustor of a gas turbine comprises a body and a flow conditioning portion configured to be placed in an air path providing air flow to a combustion chamber, the flow conditioning portion including a plurality of holes tuned to a damping frequency to dampen a pressure fluctuation caused by combustion dynamics from the combustion chamber.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: May 26, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd.
    Inventors: Esam Abu-Irshaid, Kevin Spence
  • Patent number: 10598380
    Abstract: The present disclosure is directed to a combustion section for a gas turbine engine including a combustor assembly, an outer casing, a fuel injector assembly, and an inner casing. An inner liner and an outer liner are each extended at least partially along a lengthwise direction and at an acute angle. A dome assembly is extended between the inner liner and the outer liner, and the inner liner, and the outer liner together define a combustion chamber therebetween. A bulkhead assembly defining a plurality of walls is coupled to the inner liner and generally surrounding the outer liner and dome assembly. The outer casing surrounds the combustor assembly. The inner casing, the outer casing, and the combustor assembly together define a primary flowpath. An oxidizer flows through the primary flowpath in serial flow through the plenum and the fuel injector assembly into the combustion chamber.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: March 24, 2020
    Assignee: General Electric Company
    Inventors: David Albin Lind, Rishikesh Karande, Pradeep Naik, Ajoy Patra, Gregory Allen Boardman
  • Patent number: 10520187
    Abstract: In a burner in which fuel and gaseous oxidant are fed into the burner and combusted to produce a flame that extends out of an end of the burner, the noise produced by the burner is lessened by incorporating into the burner a baffle composed of a metal plate having a certain distribution of holes through the plate and a layer of metal filaments, and optionally a second metal plate.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: December 31, 2019
    Assignee: Praxair Technology, Inc.
    Inventors: Poravee Orawannukul, Reh-Lin Chen, Bradley D Damstedt
  • Patent number: 10393384
    Abstract: A wave rotor includes an inlet end plate, a rotor drum, and an outlet end plate. The inlet end plate is arranged to direct a flow of gasses into rotor passages formed in the rotor drum. The rotor drum is arranged to receive the gasses. The outlet end plate is arranged to direct the gasses out of the rotor drum.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: August 27, 2019
    Assignee: Rolls-Royce North American Technologies Inc.
    Inventors: William N. Dalton, III, Philip H. Snyder
  • Patent number: 10386071
    Abstract: A gas turbine engine includes a combustor which has at least one annular wall defining a combustion chamber therein. The annular wall is formed by a circumferential array of panels overlapping one with another to define a plurality of radial gaps between respective adjacent two panels. The radial gaps are configured in a spiral pattern and are in fluid communication with the combustion chamber and a space outside the combustor to allow air surrounding the annular wall to enter the combustion chamber via the radial gaps for film cooling.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: August 20, 2019
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Jakub Strzepek
  • Patent number: 10267523
    Abstract: The present invention discloses a novel apparatus and way for controlling combustion dynamics in a premix combustion system. The apparatus comprises a hemispherical dome assembly with a plurality of dome dampers having a predetermined damper volume and air supply with the damper in fluid communication with the combustion chamber. The dome dampers are pressurized with a volume of air to dampen pressure waves received from the combustion chamber. One or more combustor frequencies can be targeted through use of the present invention.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: April 23, 2019
    Assignee: ANSALDO ENERGIA IP UK LIMITED
    Inventors: Jeremy Metternich, Mirko R. Bothien, Khalid Oumejjoud, Dwain P. Terrell
  • Patent number: 9989253
    Abstract: A gas turbine combustion instability control device has a combustion unit provided with a hollow combustion chamber, a gas turbine connected to the inside of the combustion chamber and a dynamic pressure sensor which is provided to the inside of the combustion chamber and measures the combustion dynamics of the inside of the combustion chamber; a diagnosis module which processes combustion dynamic pressure signals (p) according to the combustion dynamics measured by the dynamic pressure sensor to calculate the kurtosis value (k) of the dynamic pressure signals, and compares the same with a kurtosis reference value (kth) to evaluate the combustion instability; and a combustion control unit for controlling the operation of the combustion part according to the determination of the diagnosis module.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: June 5, 2018
    Assignees: Hanbat National University Industry-Academic Cooperation Foundation, Hyundai Heavy Industries Co., Ltd.
    Inventors: Dong Jin Cha, Won Joon Song, Kwang Ho Ahn, Gwang Nyeon Ryu
  • Patent number: 9964045
    Abstract: A system includes a control system. The control system includes a coherence derivation system configured to derive a coherence between respective outputs of each of a plurality of combustors coupled to a gas turbine system, and a phase derivation system configured to derive a phase difference between the respective outputs of each of the plurality of combustors coupled to the gas turbine system. The control system is configured to derive an indication of an impending lean blowout (LBO) or an actual LBO of at least one of the plurality of combustors based at least in part on the coherence derivation, the phase derivation, or a combination thereof.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: May 8, 2018
    Assignee: General Electric Company
    Inventors: Sarah Lori Crothers, Scott Arthur Day, Scott Alan Kopcho
  • Patent number: 9845732
    Abstract: A system includes a gas turbine engine having a first combustor and a second combustor. The first combustor includes a first fuel conduit having a first plurality of injectors. The first plurality of injectors are disposed in a first configuration within the first combustor along a first fuel path, and the first plurality of injectors are configured to route a fuel to a first combustion chamber. The system further includes a second combustor having a second fuel conduit having a second plurality of injectors. The second plurality of injectors are disposed in a second configuration within the second combustor along a second fuel path, and the second plurality of injectors are configured to route the fuel to a second combustion chamber. The second configuration has at least one difference relative to the first configuration.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: December 19, 2017
    Assignee: General Electric Company
    Inventors: Sarah Lori Crothers, Joseph Vincent Citeno, Christian Xavier Stevenson
  • Patent number: 9618206
    Abstract: The damper arrangement include two concentric hollow shapes, each having a wall, wherein the walls form an annular volume therebetween. The damper arrangement further includes one or more necks for connecting to a combustion chamber at corresponding one or more contact points. The one or more necks are connected to the annular volume.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: April 11, 2017
    Assignee: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Franklin Marie Genin, Naresh Aluri, Mirko Ruben Bothien
  • Patent number: 9470418
    Abstract: A gas assist flare tip for enhancing smokeless combustion of a flare gas. The assist tip which has a shroud positioned on a flare stack, the shroud having an outer annular portion and an inner tubular portion which fits over the riser. There is an annular plenum which is partially formed by the tubular portion and the outer portion and has an annular vent proximate the open end of the riser. There is at least one air jet eductor having a discharge outlet opening into the plenum.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: October 18, 2016
    Inventor: David Bacon
  • Patent number: 9447970
    Abstract: A dampener or resonator is provided within a combustor casing to mitigate combustion dynamics. The combustor casing head end volume is reduced by the resonator to mitigate combustion dynamics. The resonator is formed by a ring shaped plate that carries a continuous inwardly protruding wall or segmented inwardly protruding wall portions. The resonator can be a stand alone part that is inserted into the combustor casing or it can be integrally formed with the combustor casing.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: September 20, 2016
    Assignee: General Electric Company
    Inventors: Kwanwoo Kim, Dheeraj Sharma, Sven Bethke, Yongqiang Fu
  • Patent number: 9316156
    Abstract: An acoustic damper of the present invention is objected to obtain a sound absorption effect of a combustor in an extensive range of frequency band. The acoustic damper includes an acoustic pipe body attached to a combustor so as to communicate with an inside of the combustor, and the acoustic pipe body is provided with a plurality of passages whose extension lengths are different from each other inside the acoustic pipe body.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: April 19, 2016
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Keisuke Matsuyama, Sosuke Nakamura
  • 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: 8991185
    Abstract: A combustion device (1) for a gas turbine includes portions (12) having an inner and an outer wall (13, 14) with an interposed noise absorption plate (15) having a plurality of holes (16). The combustion device (1) further has first passages (17) connecting zones between the inner wall (13) and the plate (15) to the inside of the combustion device (1) and second passages (21) for cooling the inner wall (13). The portions (12) also have an inner layer (22) between the inner wall (13) and the plate (15) defining inner chambers (23), each connected to at least a first passage (17), and an outer layer (24) between the outer wall (14) and the plate (15) defining outer chambers (25) connected to the inner chambers (23) via the holes (16) of the plate (15).
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: March 31, 2015
    Assignee: Alstom Technology Ltd.
    Inventors: Andreas Huber, Nicolas Noiray, Bruno Schuermans, Urs Benz
  • Patent number: 8978382
    Abstract: A combustion device for a gas turbine includes an interior portion, an inner wall having a plurality of first passages and an outer wall having a plurality of second passages configured to cool the inner wall, each of the plurality of second passages having an outlet opening into a third passage. An intermediate layer is disposed between the inner wall and the outer wall and defines a plurality of chambers, each chamber forming a Helmholtz damper and being connected to the interior portion by at least one of the plurality of first passages and being connected to at least one of the plurality of second passages by at least one of the plurality of third passages.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: March 17, 2015
    Assignee: Alstom Technology Ltd.
    Inventors: Andreas Huber, Nicolas Noiray, Urs Benz, Felix Reinert, Diane Lauffer
  • Patent number: 8973365
    Abstract: A combustor liner may include an annular inner liner and an annular outer liner with a plurality of air holes thereon. The outer liner may be positioned circumferentially around the inner liner such that an annular cooling space is defined between the inner and the outer liner. The combustor liner may also include at least one resonator coupled to the outer liner such that a base of the resonator is separated from the outer liner to form a gap with an external surface of the outer liner. The combustor liner may also include a throat extending from the base of the resonator penetrating the inner liner and the outer liner. The combustor liner may further include a grommet assembly that allows for relative thermal expansion between the inner liner and the outer liner proximate the throat.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: March 10, 2015
    Assignee: Solar Turbines Incorporated
    Inventors: Robert Corr, Peter Sykes, Bruno Struck, Kenneth G. Thomas, Richard Braeutigam, Danny Gauce, Alexander Krichever, Vu Phi, Timothy Caron
  • Patent number: 8966903
    Abstract: Certain embodiments of the present disclosure include a combustor resonator having a non-uniform annulus between a combustor assembly and a resonator shell. The combustor resonator may further include resonator necks or passages having non-uniform lengths and geometries.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: March 3, 2015
    Assignee: General Electric Company
    Inventors: Mohan Krishna Bobba, Kwanwoo Kim, Patrick Benedict Melton, Carolyn Ashley Antoniono
  • 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
  • Patent number: 8943825
    Abstract: A Helmholtz damper for a combustor of a gas turbine includes first and second damping volumes. The combustor has a combustion chamber disposed in a housing and closed off by a front plate at which a plurality of burners are exchangeably fastened. The burners are supplied with fuel via fuel lances which extend from outside the housing through a bushing of the housing to the associated burner. The first damping volume has a first end and a second end, the first end of the first damping volume being configured to attach a connecting passage extending to a front panel such that the Helmholtz damper is connectable with the front plate of the combustion chamber in place of one of the burners. The second damping volume has a first end and a second end and is arranged in series with the first damping volume along an axis of the Helmholtz damper with the first end of the second damping volume being detachably connected to the second end of the first damping volume so as to form a combined larger damping volume.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: February 3, 2015
    Assignee: Alstom Technology Ltd.
    Inventors: Fulvio Magni, Martin Andrea Von Planta, Frank Grimm, Dariusz Nowak, Mischa Schaerer
  • Patent number: 8939759
    Abstract: A tubular burner has: a mixing tube inclusive of an inlet port, a venturi section, and a tapered tube section; and a flame hole member having a plurality of flame holes and being adapted to be fitted into a front end region of the mixing tube. A flame hole member has a front plate and a rear plate, both of sheet metal make. The front plate has a first flame hole in the central portion of the front plate, and a plurality of second flame holes located around a periphery of the first flame hole. The rear plate has a first ventilation hole in the center thereof so as to lie opposite to the first flame hole, and a plurality of second ventilation holes of smaller diameter than the first ventilation hole.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: January 27, 2015
    Assignee: Rinnai Corporation
    Inventor: Keisuke Mori
  • Patent number: 8904794
    Abstract: A gas turbine including a combustion oscillation suppressing device disposed to a transition piece of a combustor to define a gas space S, and having a plurality of vent holes through which a gas space L and the inside of the transition piece communicate. The combustion oscillation suppressing device is formed of a first member and a second member which define the gas space, the second member having the plurality of vent holes, and a portion of a transition piece wall includes the second member. A distance from the second member to the first member in the radial direction of the transition piece is a height of the gas space, and when the height of the gas space varies along an axial direction of the transition piece, an opening ratio ?p of each of the plurality of vent holes is adjusted depending on the height of the gas space.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: December 9, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Keisuke Matsuyama, Kotaro Miyauchi
  • Patent number: 8839624
    Abstract: A combustion device for a gas turbine that includes a portion having first and second walls that defines an inside of the combustion device, a zone between the first and second walls and an outside of the combustion device. A plurality of first passages connect the inside of the combustion device to the zone between the first and second walls and a plurality of second passages connect the zone between the first and second walls to the outside of the combustion device. A plurality of chambers are defined within the zone between the first and second walls, each chamber being connected with one first passage and at least one second passage. Each chamber defining a Helmholtz damper.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: September 23, 2014
    Assignee: Alstom Technology Ltd.
    Inventors: Alexander Schnell, Nicolas Noiray, Felix Reinert, Diane Lauffer, Bruno Schuermans
  • Patent number: 8753110
    Abstract: A vented combustion chamber for an insect attractant engine is provided for a flying insect trapping device of the type that relies upon combustion of a fuel to generate a flow of carbon dioxide to attract flying insects. The combustion chamber, which is generally tubular and horizontally oriented in operation, is vented through a hole formed in one side of the chamber wall that extends from the outer surface of the chamber into the interior thereof. During operation of the device, this through-hole allows gas inside the chamber to be vented to the outside, changing the effective length of the combustion chamber for the purposes of wave generation is changed so that creation of a resonance cycle or standing wave, and the resulting acoustic phenomenon of howling, is prevented.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: June 17, 2014
    Assignee: Woodstream Corporation
    Inventors: Robert T. Cruz, Richard L. Eyer, Marko Konstantin Lubic, Christopher Kamery
  • Patent number: 8753109
    Abstract: The invention relates to a device for providing a gas/combustion air mixture for a gas burner, comprising a fan (11) for providing a combustion air flow, a gas control device for providing a gas flow and a mixing device (13) for mixing the combustion air flow and the gas flow, thus providing the gas/combustion air mixture. Said mixing device (13) and the fan (11) are connected together on one side, and on the other side, the mixing device and the gas control device are connected together. According to the invention, the mixing device (13) and the fan (11) are connected together in such a manner that a vibration absorber (15) is arranged between a connecting section (12) of the mixing device (13) and a connecting section (10) of the fan (11).
    Type: Grant
    Filed: October 25, 2008
    Date of Patent: June 17, 2014
    Assignee: Honeywell Technologies Sarl
    Inventors: Roelof Thiewes, Enno Vrolijk
  • Publication number: 20140134551
    Abstract: Combustor. The combustor includes a duct through which an air/fuel mixture flows, including a flame-anchoring region. An insulating material is located proximate the flame-anchoring anchoring region whereby combustion instability is decreased.
    Type: Application
    Filed: April 8, 2013
    Publication date: May 15, 2014
    Applicant: Massachusetts Institute of Technology
    Inventors: Ahmed F. Ghoniem, Santosh Janardhan Shanbhogue, Seunghyuck Hong
  • Patent number: 8720204
    Abstract: A combustor liner has a plurality of resonators formed thereon. Each resonator has a radially outer wall and at least one side wall. The outer wall can be free of holes. Each resonator has an inner cavity defined between the outer wall, the at least one side wall and the outer peripheral surface of the liner. The at least one side wall of each resonator surrounds a subset of a plurality of holes that extend substantially radially through the liner. A plurality of cooling passages extends generally longitudinally within the liner. Each cooling passage has an inlet in fluid communication with the exterior of the liner and an outlet in fluid communication with the inner cavity of a respective one of the resonators. A coolant, such as compressor air, can enter and flow along the cooling passages to thereby cool the liner and purge the inner cavity of the resonator.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: May 13, 2014
    Assignee: Siemens Energy, Inc.
    Inventors: Reinhard Schilp, Muzaffer Sutcu
  • Patent number: 8708696
    Abstract: Combustor. The combustor includes an axially symmetric tube along with means for introducing fuel and air into the tube. A swirler is disposed within the tube to impart rotation in a first direction to the air/fuel mixture. A plurality of holes downstream of the swirler are disposed around the tube and offset at an angle relative to an inward normal to the tube wall. Air is injected through the offset holes to impart rotation to the air/fuel mixture in a second direction opposite to the first direction. A combustion chamber having a diameter larger than that of the tube receives and burns the air/fuel mixture from the tube.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: April 29, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Ahmed F. Ghoniem, Zachary A. LaBry, Santosh J. Shanbhogue, Raymond L. Speth
  • Patent number: 8661822
    Abstract: In one embodiment, a system includes a variable geometry resonator configured to couple to a fluid path upstream from a combustor of a turbine engine. The variable geometry resonator is configured to dampen pressure oscillations in the fluid path and the combustor.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: March 4, 2014
    Assignee: General Electric Company
    Inventors: Ilya Slobodyanskiy, John Lipinski, Shiva Srinivasan, Dmitry Tretyakov
  • Publication number: 20140030662
    Abstract: A control module for preventing acoustic resonance noise generation from a heat exchanger of a heating furnace, comprising a control signal generated by the control module. The control signal is configured to operate an induction fan of the heating furnace at more than one speed for a given heat demand mode of the heating furnace.
    Type: Application
    Filed: July 24, 2012
    Publication date: January 30, 2014
    Applicant: Lennox Industries Inc.
    Inventor: Shiblee S. M. Noman
  • Patent number: 8635874
    Abstract: An exemplary combustor includes at least a portion having an inner liner and an outer cover plate, which together form an interposed cooling chamber. A plurality of hollow elements extend from the liner and protrude into the cooling chamber. Each hollow element defines a damping volume connected to an inner volume of the combustion chamber via a calibrated duct. During operation, the hollow elements damp pressure pulsations and, in addition, also transfer heat.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: January 28, 2014
    Assignee: Alstom Technology Ltd
    Inventors: Adnan Eroglu, Ewald Freitag, Uwe RĂ¼del, Urs Benz, Andreas Huber
  • Publication number: 20140013756
    Abstract: A combustor includes an upstream surface that extends radially across at least a portion of the combustor, a downstream surface that extends radially across at least a portion of the combustor and is axially separated from the upstream surface, and a plurality of tubes that extend through the downstream surface. A resonator is upstream from at least one of the tubes, and a fluid passage extends through the resonator and into the least one tube.
    Type: Application
    Filed: July 10, 2012
    Publication date: January 16, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Patrick Benedict Melton, Keith Cletus Belsom, Lucas John Stoia
  • Patent number: 8516819
    Abstract: A gas turbine combustor having a Helmholtz resonator in a post-swirler homogenization zone upstream of the combustor zone. Embodiments of the present invention provide Helmholtz resonators that include cavities that occupy a remainder of a post-swirler homogenization zone, which also includes at least one flow-directing structure that passes a fuel/oxidizer mixture from a main swirler assembly into a combustion zone of a combustor. Thus, an open annular region of the combustor is converted into a multi-purpose zone that includes at least one Helmholtz resonator.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: August 27, 2013
    Assignee: Siemens Energy, Inc.
    Inventors: Domenico Gambacorta, Clifford E. Johnson
  • Publication number: 20130174837
    Abstract: A burner body is disclosed for use in a gas burner assembly. The burner body includes a sidewall and a main gas conduit, the main gas conduit having an inlet and an outlet; a plurality of primary burner ports disposed within the sidewall so as to be in communication with the outlet of the main gas conduit; a simmer flame port disposed within the sidewall in a spaced relation with the primary burner ports for providing a reignition source therefore; and a stability chamber disposed within the burner body, wherein the stability chamber comprises at least a first expansion region and a second expansion region, wherein the second expansion region has a greater volume than the first expansion region.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 11, 2013
    Inventor: Paul Bryan CADIMA
  • Publication number: 20130164697
    Abstract: A combustion apparatus has a burner, a combustion box containing therein a heat exchanger, an exhaust passage in fluid communication with the combustion box, a fan for supplying the burner with combustion air, and a predetermined length of air suction duct in fluid communication with a suction opening formed in a fan casing. The air suction duct has: on a downstream end thereof, an outlet cylindrical portion which is smaller in diameter than a diameter of the suction opening in the fan casing and which lies opposite to the suction opening; and a flange portion which overhangs radially outward from a perimeter of the air suction duct adjacent to the outlet cylindrical portion into contact with that peripheral portion of the fan casing which forms the suction opening. The flange portion is provided with an auxiliary suction opening in fluid communication with a space surrounding the outlet cylindrical portion.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 27, 2013
    Applicant: Rinnai Corporation
    Inventor: Rinnai Corporation
  • Patent number: 8413443
    Abstract: A resonator system for a turbine engine can improve acoustic performance and cooling effectiveness. During engine operation, a combustor liner exhibits alternating hot and cold regions in the circumferential direction corresponding to the non-uniform temperature distribution of the combustion flame. Accordingly, high flow resonators are formed with the liner in substantial alignment with the hot regions of the fluid flow within the liner, and low flow resonators are formed with the liner in substantial alignment with cold regions of the fluid flow within the liner. As a result, appropriate amounts of cooling can be provided to the liner so that cooling air usage is optimized. Alternatively or in addition, the liner can include two or more rows of resonators, which can provide an enhanced acoustic damping response. The resonators in the first row can be aligned with or offset from the resonators in the second row.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: April 9, 2013
    Assignee: Siemens Energy, Inc.
    Inventor: Clifford E. Johnson
  • Publication number: 20130025512
    Abstract: In one aspect, a fuel oxygenation apparatus includes a fuel oil supply fluidically coupled to the inlet of a positive displacement pump for delivery of the fuel oil to a fuel oil burner. An oxygen supply is fluidically coupled to the inlet of the positive displacement pump. During the suction cycle, a momentary vacuum is created at the pump inlet side drawing oxygen gas into the fuel line where it admixes with the fuel oil supply. Oxygenating the fuel prior to combustion increases efficiency of the burner and reduces undesirable emissions.
    Type: Application
    Filed: July 30, 2012
    Publication date: January 31, 2013
    Applicant: ENERGY EFFICIENCY SOLUTIONS, LLC
    Inventor: Eric T. LaVoie
  • Publication number: 20120291438
    Abstract: A burner system is provided that includes at least two adjacent burners that are separate from each other. Each of the two burners has at least one combustion chamber and a head end. The head end includes at least a fuel injection and a fuel-air premix. Each burner has a cap with a cap side and cap upper side, wherein at least the cap upper side is arranged ahead of the head end, seen in the direction of flow. In this manner, a burner plenum is formed between the cap upper side and the head end. The at least two burner plenums thus formed have an acoustic connection. A method for damping such a burner system is also provided.
    Type: Application
    Filed: March 7, 2011
    Publication date: November 22, 2012
    Applicant: Siemens Aktiegesellschaft
    Inventor: Sven Bethke
  • Patent number: 8312706
    Abstract: The present specification generally relates to improvements to combustors such as burners and engines. In one aspect, the specification presents an acoustically enhanced ejector system which can be used as part of an intake system for a combustor. In another aspect, the specification teaches the use of a combustor combustion chamber as an oscillator to magnify a harmonic frequency of a pulsating frequency of the combustor. In still other aspects, the specification presents a combustion chamber having an inlet with a plurality of tangentially spaced apertures, and an in-line intake system connected to the apertures.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: November 20, 2012
    Assignee: Atlantis Research Labs
    Inventors: Luc Laforest, Dennis Vivian Collins
  • Publication number: 20120288807
    Abstract: A dampener or resonator is provided within a combustor casing to mitigate combustion dynamics. The combustor casing head end volume is reduced by the resonator to mitigate combustion dynamics. The resonator is formed by a ring shaped plate that carries a continuous inwardly protruding wall or segmented inwardly protruding wall portions. The resonator can be a stand alone part that is inserted into the combustor casing or it can be integrally formed with the combustor casing.
    Type: Application
    Filed: May 12, 2011
    Publication date: November 15, 2012
    Applicant: General Electric Company
    Inventors: Kwanwoo Kim, Dheeraj Sharma, Sven Bethke, Yongqiang Fu
  • Publication number: 20120286053
    Abstract: The invention relates to a heat exchanger for a mobile heating device comprising a burner, the heat exchanger having a carrier body with an inner face and an outer face. The inner face of the carrier body is formed as an inner exhaust gas duct for conducting exhaust gas of the burner. Furthermore, a channeling is arranged between the inner face and the outer face of the carrier body for conducting a heat transfer medium. The heat transfer medium is in heat conducting contact, via the inner face, with exhaust gas in the inner exhaust gas duct. At the outer face of the carrier body, an outer exhaust gas duct for conducting exhaust gas of the burner is provided. The heat transfer medium is in heat conducting contact via the outer face of the carrier body with exhaust gas flowing in the outer exhaust gas duct. The present invention further relates to a mobile heating device having a burner and to such a heat exchanger and to a motor vehicle comprising such a heating device.
    Type: Application
    Filed: November 23, 2010
    Publication date: November 15, 2012
    Applicant: WEBASTO AG
    Inventors: Gunter Galtz, Tobias Hentrich, Stephan Polzin
  • Patent number: 8239114
    Abstract: A method of combustion stability control for a gas turbine engine is provided, and includes the steps of receiving by a stability controller, information regarding environmental and operating conditions, and comparing the environmental and operating conditions to pre-programmed information to determine if a likelihood of combustion instability exists. The method further includes the steps of determining optimal fuel modulation frequency and amplitude for the environmental condition to reduce combustion instability, if a likelihood of combustion instability exists, and actuating at least one fuel modulation valve to, at the optimal fuel modulation frequency and amplitude, reduce combustion instability, if a likelihood of combustion instability exists. Systems for modulating fuel flow are also provided.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: August 7, 2012
    Assignee: Delavan Inc
    Inventors: Jerry Lee Goeke, Brandon Philip Williams
  • Publication number: 20120107754
    Abstract: The present specification generally relates to improvements to combustors such as burners and engines. In one aspect, the specification presents an acoustically enhanced ejector system which can be used as part of an intake system for a combustor. In another aspect, the specification teaches the use of a combustor combustion chamber as an oscillator to magnify a harmonic frequency of a pulsating frequency of the combustor. In still other aspects, the specification presents a combustion chamber having an inlet with a plurality of tangentially spaced apertures, and an in-line intake system connected to the apertures.
    Type: Application
    Filed: November 23, 2011
    Publication date: May 3, 2012
    Inventors: LUC LAFOREST, Dennis Vivian Collins
  • Publication number: 20120100495
    Abstract: The present specification generally relates to improvements to combustors such as burners and engines. In one aspect, the specification presents an acoustically enhanced ejector system which can be used as part of an intake system for a combustor. In another aspect, the specification teaches the use of a combustor combustion chamber as an oscillator to magnify a harmonic frequency of a pulsating frequency of the combustor. In still other aspects, the specification presents a combustion chamber having an inlet with a plurality of tangentially spaced apertures, and an in-line intake system connected to the apertures.
    Type: Application
    Filed: November 23, 2011
    Publication date: April 26, 2012
    Inventors: Luc Laforest, Dennis Vivian Collins
  • Patent number: 8146364
    Abstract: Embodiments of the present invention provide resonators (260, 460) that have lateral walls (268, 270) disposed at non-square angles relative to the liner's longitudinal (and flow-based) axis (219) such that a film cooling of substantial portions of an intervening strip (244, 444) is provided from apertures (226A, 226B, 426) in a resonator box (262, 462) adjacent and upstream from the intervening strip (244, 444). This film cooling also cools weld seams (280) along the lateral walls (268, 270) of the resonator boxes (262, 462). In various embodiments the lateral wall angles are such that film cooling may be provided to include the most of the downstream portions of the intervening strips (244, 444). These downstream portions are closer to the combustion heat source and therefore expected to be in greater need of cooling.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: April 3, 2012
    Assignee: Siemens Energy, Inc.
    Inventors: Clifford E. Johnson, Robert J. Bland, Domenico Gambacorta, Samer P. Wasif
  • Patent number: 8127546
    Abstract: An end cap for a fuel injector of a turbine engine is disclosed. The end cap includes an annular first surface including a plurality of perforations. The annular first surface is exposed to a combustion chamber of the turbine engine. The end cap is coupled to an end face of the fuel injector to define an enclosed cavity. The enclosed cavity and the plurality of perforations form an array of Helmholtz resonators.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: March 6, 2012
    Assignee: Solar Turbines Inc.
    Inventor: Roger James Park
  • Publication number: 20110311924
    Abstract: An improved induced draft gas burner assembly (31, 131, 231, 331, 431, 531, 631) for low NOx residential and light commercial gas furnaces (10, 10a) is disclosed. The improved burner includes an upstream assembly coupled to a fuel inlet (55) and an air inlet (43). The air inlet (43) is coupled to a neck (41, 141, 241, 341, 441, 541, 641) extending between the air inlet (43) and the outlet of the neck (41, 141, 241, 341, 441, 541, 641), both of which may be disposed within an optional chamber (42, 142, 242, 342, 442). If used, such a chamber (42, 142, 242, 342, 442) also includes an outlet coupled to a burner (46, 146, 246, 346, 546, 646). In practice, the chamber (42, 142, 242, 342, 442) and neck (41, 141, 241, 341, 441, 541, 641) behave as a Helmholtz resonator that can be tuned to provide an upstream impedance Zup that exceeds the downstream impedance Zdown of the components downstream of the burner assembly (31, 131, 231, 331, 431, 531, 631).
    Type: Application
    Filed: June 22, 2011
    Publication date: December 22, 2011
    Applicant: Carrier Corporation
    Inventors: William Proscia, Scott A. Liljenberg, William J. Roy, Duane C. McCormick, Christopher T. Chipman