公开(公告)号：US10125983B2

公开(公告)日：2018-11-13

申请号：US15235517

申请日：2016-08-12

Applicant: CLEARSIGN COMBUSTION CORPORATION

Inventor： Joseph Colannino ,  Douglas W. Karkow ,  Christopher A. Wiklof

IPC: F23D14/04 ,  F23D14/70 ,  F23N5/02 ,  F23D14/14

Abstract: A method of operation of a burner system includes introducing a fuel stream into a perforated flame holder, combusting the fuel stream, with a majority of the combustion occurring between an input face and an output face of the flame holder, and producing a heat output from the combustion of at least 1.5 kBTU/H/in2.

公开(公告)号：US10125979B2

公开(公告)日：2018-11-13

申请号：US14787144

申请日：2014-05-12

Applicant: ClearSign Combustion Corporation

Inventor： Joseph Colannino ,  Douglas W. Karkow

IPC: F23C99/00 ,  F23Q7/22 ,  F23Q3/00 ,  F23N5/20 ,  F23N5/24

Abstract: A combustion system includes a combustion fluid charge source and a start-up flame holder configured to attract the charge and hold a flame when the combustion system is cool and allow the flame to lift when the combustion system is warmed up.

公开(公告)号：US10088153B2

公开(公告)日：2018-10-02

申请号：US15345795

申请日：2016-11-08

Applicant: ClearSign Combustion Corporation

Inventor： Joseph Colannino ,  Douglas W. Karkow ,  Christopher A. Wiklof

IPC: F23D14/14 ,  B01J19/00 ,  F23D14/26

Abstract: A cracking furnace includes a combustion volume defined in part by a burner wall having a refractory lining. A plurality of perforated flame holders is arranged in an array that is spaced away from the wall, with fuel input faces facing the wall. Each of a plurality of fuel nozzles is positioned and configured to emit a fuel stream toward the input face of a respective one of the plurality of perforated flame holders. Combustion reactions, supported by the fuel streams emitted by the fuel nozzles, and held by the flame holders, release heat, which is emitted by the flame holders as thermal (blackbody) radiation, a portion of which impinges upon, and heats the inner face of the refractory lining. Thermal radiation from the flame holders and the wall impinges upon a load positioned in the approximate center of the combustion volume, between burner walls.

公开(公告)号：US10006715B2

公开(公告)日：2018-06-26

申请号：US15044953

申请日：2016-02-16

Applicant: ClearSign Combustion Corporation

Inventor： Joseph Colannino ,  Douglas W. Karkow ,  Christopher A. Wiklof

IPC: F27B9/24 ,  F27B9/26 ,  F27D3/12 ,  F23D14/14 ,  F23D14/84 ,  F23D14/70 ,  F23D14/72

CPC classification number: F27B9/2469 ,  F23D14/14 ,  F23D14/70 ,  F23D14/725 ,  F23D14/84 ,  F23N2027/02 ,  F23N2029/00 ,  F27B9/243 ,  F27B9/262 ,  F27D3/123

Abstract: A process oven includes a housing structure with a conveyor system configured to carry product through a housing structure from a first opening to a second opening. A perforated flame holder is positioned within the housing structure and configured to apply, to the product, thermal energy released by a combustion reaction held by the perforated flame holder.

公开(公告)号：US20180135884A1

公开(公告)日：2018-05-17

申请号：US15857511

申请日：2017-12-28

Applicant: ClearSign Combustion Corporation

Inventor： DOUGLAS W. KARKOW ,  JOSEPH COLANNINO ,  CHRISTOPHER A. WIKLOF

IPC: F24H1/20 ,  F23D14/58 ,  F24H9/18 ,  F24H1/18 ,  F23D14/64 ,  F23D14/02 ,  F24H1/00

CPC classification number: F24H1/205 ,  F23D14/02 ,  F23D14/583 ,  F23D14/64 ,  F24H1/0036 ,  F24H1/18 ,  F24H9/1836

Abstract: A water heater includes a water tank having an inlet and an outlet, and a flue extending through the tank. A nozzle is positioned near a first end of the flue, arranged so as to emit a fuel stream into the flue, and a flame holder is located within the flue in a position to receive the fuel stream and to hold a flame entirely within the flue.

公开(公告)号：US09958154B2

公开(公告)日：2018-05-01

申请号：US13658766

申请日：2012-10-23

Applicant: ClearSign Combustion Corporation

Inventor： Joseph Colannino ,  Thomas S. Hartwick ,  David B. Goodson ,  Tracy A. Prevo ,  Christopher A. Wiklof

IPC: F23C99/00 ,  F23D14/84 ,  F23C5/14 ,  F23N5/26

CPC classification number: F23C99/001 ,  F23C5/14 ,  F23D14/84 ,  F23N5/265 ,  Y10T137/0391

Abstract: A charge electrode configured to impart a time-varying charge to a flame and a shape electrode located outside the flame may be driven synchronously by a voltage source through time varying voltage(s). The flame may be flattened or compressed responsive to an electric field produced by the shape electrode acting on the charges imparted to the flame.

公开(公告)号：US20180051874A1

公开(公告)日：2018-02-22

申请号：US15666941

申请日：2017-08-02

Applicant: CLEARSIGN COMBUSTION CORPORATION

Inventor： JESSE DUMAS

IPC: F23C99/00

CPC classification number: F23C99/001

Abstract: A combustion system includes a burner assembly, an electrode positioned within a combustion volume and configured to apply electrical energy to a flame supported by the burner assembly, and a dielectric electrode support extending through a furnace wall into the combustion volume and configured to support the electrode and further configured to be cooled by a coolant fluid circulated therethrough. The electrode support has coolant ports in fluid communication with a coolant channel extending within electrode support. During operation of the combustion system, a fluid coolant flows through the electrode support, holding a temperature of the electrode to within a selected range.

公开(公告)号：US20180038588A1

公开(公告)日：2018-02-08

申请号：US15668562

申请日：2017-08-03

Applicant: CLEARSIGN COMBUSTION CORPORATION

Inventor： DOUGLAS W. KARKOW ,  JOSEPH COLANNINO ,  ROBERTO RUIZ ,  JESSE DUMAS ,  JAMES K. DANSIE ,  DONALD KENDRICK ,  NICHOLAS S. BROMER ,  CHRISTOPHER A. WIKLOF

IPC: F23D14/14 ,  F23C5/06 ,  F23D14/58 ,  F23D11/40 ,  F23D14/32

CPC classification number: F23D14/14 ,  F01N3/2066 ,  F23C5/02 ,  F23C5/06 ,  F23D11/004 ,  F23D11/406 ,  F23D14/04 ,  F23D14/32 ,  F23D14/58 ,  F23D14/66 ,  F23D14/70 ,  F23D14/74 ,  F23D14/82 ,  F23D2209/20 ,  F23D2214/00 ,  F23M9/06 ,  F23R3/18

Abstract: A combustion system includes a fuel and oxidant source, a perforated flame holder, and a support structure that supports the perforated flame holder at a selected distance from the fuel and oxidant source. The fuel and oxidant source outputs fuel and oxidant onto the perforated flame holder. The perforated flame holder receives the fuel and oxidant and sustains a combustion reaction of the fuel and oxidant within the perforated flame holder.

公开(公告)号：US09885496B2

公开(公告)日：2018-02-06

申请号：US14811758

申请日：2015-07-28

Applicant: ClearSign Combustion Corporation

Inventor： Douglas W. Karkow ,  Joseph Colannino ,  Christopher A. Wiklof

IPC: F22B37/06 ,  F24H9/20 ,  F24H1/20 ,  F24H1/00 ,  F24H1/18 ,  F24H9/18 ,  F23D14/02 ,  F23D14/58 ,  F23D14/64

CPC classification number: F24H1/205 ,  F23D14/02 ,  F23D14/583 ,  F23D14/64 ,  F24H1/0036 ,  F24H1/18 ,  F24H9/1836

Abstract: A water heater includes a water tank having an inlet and an outlet, and a flue extending through the tank. A nozzle is positioned near a first end of the flue, arranged so as to emit a fuel stream into the flue, and a flame holder is located within the flue in a position to receive the fuel stream and to hold a flame entirely within the flue.

公开(公告)号：US09857076B2

公开(公告)日：2018-01-02

申请号：US14763271

申请日：2014-02-14

Applicant: ClearSign Combustion Corporation

Inventor： Douglas W. Karkow ,  Joseph Colannino ,  Igor A. Krichtafovitch ,  Robert E. Breidenthal ,  Christopher A. Wiklof

IPC: F23D14/14 ,  F23C99/00 ,  F23D14/20 ,  F23D14/74 ,  F23D14/70 ,  F23D14/84 ,  F23D23/00 ,  F23C5/08 ,  F23M5/02

CPC classification number: F23D14/14 ,  F23C5/08 ,  F23C99/001 ,  F23C2200/00 ,  F23D14/20 ,  F23D14/70 ,  F23D14/74 ,  F23D14/84 ,  F23D23/00 ,  F23M5/025 ,  F23N2037/02

Abstract: A perforated flame holder and burner including a perforated flame holder provides reduced oxides of nitrogen (NOx) during operation. The perforated flame holder includes a pattern of elongated apertures extending between a proximal and a distal surface of the flame holder relative to a fuel nozzle. The perforated flame holder can provide a significantly reduced flame height while maintaining heat output from the burner.