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：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.

公开(公告)号：US09828288B2

公开(公告)日：2017-11-28

申请号：US14823313

申请日：2015-08-11

Applicant: ClearSign Combustion Corporation

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

IPC: C04B7/44 ,  F27B7/10 ,  F27B7/34 ,  F27B7/32 ,  C04B7/36 ,  C01G23/08

CPC classification number: C04B7/44 ,  C01G23/08 ,  C04B7/361 ,  C04B7/4438 ,  C04B7/4453 ,  F27B7/10 ,  F27B7/32 ,  F27B7/34 ,  Y02P40/121

Abstract: A rotary kiln includes a stationary fuel nozzle and a perforated flame holder positioned within an inclined rotating shell. The flame holder includes a plurality of perforations that collectively confine a combustion reaction of the burner to the flame holder to shift most heat transfer from the combustion reaction from radiation heat transfer to convective heat transfer.

公开(公告)号：US09797595B2

公开(公告)日：2017-10-24

申请号：US14762155

申请日：2014-02-14

Applicant: ClearSign Combustion Corporation

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

IPC: F23D14/14 ,  F23C99/00 ,  F23N5/26 ,  F27D11/06 ,  F23D14/24 ,  F23D14/84 ,  F23N5/00 ,  F23N1/00 ,  F23D14/02 ,  F23D14/74 ,  F23D11/44 ,  F23D11/02 ,  F23D11/38 ,  F23D11/40 ,  F23L7/00 ,  F23C6/04 ,  F23C9/06 ,  F23D14/26 ,  F23N1/02 ,  F23D11/42

CPC classification number: F23C99/001 ,  F23C6/042 ,  F23C9/06 ,  F23C2201/00 ,  F23C2900/00 ,  F23D11/02 ,  F23D11/38 ,  F23D11/383 ,  F23D11/406 ,  F23D11/42 ,  F23D11/446 ,  F23D11/448 ,  F23D14/02 ,  F23D14/14 ,  F23D14/145 ,  F23D14/24 ,  F23D14/26 ,  F23D14/74 ,  F23D14/84 ,  F23D2203/1012 ,  F23D2203/102 ,  F23D2203/1023 ,  F23D2203/104 ,  F23D2203/105 ,  F23D2207/00 ,  F23D2208/10 ,  F23L7/007 ,  F23N1/00 ,  F23N1/002 ,  F23N1/02 ,  F23N5/00 ,  F23N5/10 ,  F23N5/265 ,  F23N2021/00 ,  F23N2027/22 ,  F23N2900/00 ,  F27D11/06 ,  Y02T50/677

Abstract: A combustion system such as a furnace or boiler includes a perforated reaction holder configured to hold a combustion reaction that produces very low oxides of nitrogen (NOx).