公开(公告)号：US20190323707A1

公开(公告)日：2019-10-24

申请号：US16404480

申请日：2019-05-06

Applicant: ClearSign Combustion Corporation

Inventor： SUNNY KARNANI ,  JAMES K. DANSIE ,  JACKSON M. PLEIS

IPC: F23D14/14 ,  F23D14/22 ,  F23D14/32 ,  F23D14/56 ,  F23D14/58 ,  F23Q13/00 ,  H05H1/48

Abstract: A combustion system includes a perforated flame holder, a fuel nozzle configured to output fuel toward the perforated flame holder, and a plasma ignition device configured to output a plasma during a preheating state of the combustion system and to cease outputting the plasma to transition from the preheating state to the standard operating state. In the preheating state the plasma ignition device causes a preheating flame of the fuel stream at a position between the fuel nozzle and the perforated flame holder. In the standard operating condition, the plasma is not present and the fuel stream impinges on the perforated flame holder. The perforated flame holder supports a combustion reaction of the fuel stream within the perforated flame holder when in the standard operating state.

公开(公告)号：US20190107331A1

公开(公告)日：2019-04-11

申请号：US16166509

申请日：2018-10-22

Applicant: CLEARSIGN COMBUSTION CORPORATION

Inventor： DONALD KENDRICK ,  JAMES K. DANSIE ,  DOUGLAS W. KARKOW ,  CHRISTOPHER A. WIKLOF

IPC: F27D99/00 ,  F23D14/14 ,  F23D14/26 ,  F23D14/58 ,  F23D14/70

Abstract: A combustion system includes a fuel and oxidant source and a flame holder. The flame holder includes a plurality of discrete slats arranged in parallel defining combustion channels between adjacent slats. The fuel and oxidant source outputs fuel and oxidant into the combustion channels. The flame holder holds a combustion reaction of the fuel and oxidant in the combustion channels.

公开(公告)号：US20190011123A1

公开(公告)日：2019-01-10

申请号：US16033854

申请日：2018-07-12

Applicant: ClearSign Combustion Corporation

Inventor： JAMES K. DANSIE ,  DOUGLAS W. KARKOW ,  JESSE DUMAS ,  DONALD KENDRICK ,  SUNNY KARNANI ,  CHRISTOPHER A. WIKLOF

IPC: F23D11/40 ,  F23D14/70 ,  F23D14/14 ,  F23M9/06

Abstract: A combustion system includes a fuel and oxidant source that outputs fuel and oxidant, a first perforated flame holder, and a second perforated flame holder separated from the first perforated flame holder by a gap. The first and second perforated flame holders sustain a combustion reaction of the fuel and oxidant within the first and second perforated flame holders.

公开(公告)号：US20190003705A1

公开(公告)日：2019-01-03

申请号：US16105499

申请日：2018-08-20

Applicant: ClearSign Combustion Corporation

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

IPC: F23C99/00 ,  F27D11/06 ,  F23D14/74 ,  F23D14/24 ,  F23N5/26 ,  F23N5/10 ,  F23D14/14 ,  F23D11/40 ,  F23D11/44 ,  F23D11/42 ,  F23D14/02 ,  F23N1/00 ,  F23L7/00 ,  F23D11/38 ,  F23D11/02 ,  F23D14/26 ,  F23C9/06 ,  F23C6/04 ,  F23N5/00 ,  F23N1/02 ,  F23D14/84

Abstract: According to an embodiment, a combustion system is provided, which includes a nozzle configured to emit a diverging fuel flow, a flame holder positioned in the path of the fuel flow and that includes a plurality of apertures extending therethrough, and a preheat mechanism configured to heat the flame to a temperature exceeding a startup temperature threshold.

公开(公告)号：US20180340685A1

公开(公告)日：2018-11-29

申请号：US16046165

申请日：2018-07-26

Applicant: ClearSign Combustion Corporation

Inventor： IGOR A. KRICHTAFOVITCH ,  CHRISTOPHER A. WIKLOF

IPC: F23C99/00 ,  F23N5/12 ,  F23N5/00

Abstract: A high voltage can be applied to a combustion reaction to enhance or otherwise control the combustion reaction. The high voltage is switched on or off by a grid electrode interposed between a high voltage electrode assembly and the combustion reaction.

公开(公告)号：US10101024B2

公开(公告)日：2018-10-16

申请号：US15605062

申请日：2017-05-25

Applicant: CLEARSIGN COMBUSTION CORPORATION

Inventor： David B. Goodson ,  Tracy A. Prevo ,  Joseph Colannino ,  Robert E. Breidenthal ,  Igor A. Krichtafovitch ,  Christopher A. Wiklof

IPC: F23C99/00 ,  B01D46/00 ,  B01D53/32 ,  F23G5/12 ,  F23C6/04 ,  F01N3/08 ,  F23G5/44 ,  F23C9/00 ,  F23C1/02 ,  F23C5/08

Abstract: According to embodiments, a co-fired or multiple fuel combustion system is configured to apply an electric field to a combustion region corresponding to a second fuel that normally suffers from poor combustion and/or high sooting. Application of an AC voltage to the combustion region was found to increase the extent of combustion and significantly reduce soot evolved from the second fuel.

公开(公告)号：US10047950B2

公开(公告)日：2018-08-14

申请号：US15165914

申请日：2016-05-26

Applicant: ClearSign Combustion Corporation

Inventor： Roberto Ruiz ,  Joseph Colannino ,  Igor A. Krichtafovitch ,  Christopher A. Wiklof

IPC: F23N5/00 ,  F23C99/00 ,  F23C5/00 ,  F23C15/00 ,  F23N5/20

Abstract: An oscillating combustor can support a time-sequenced combustion reaction having rich and lean phases by applying a variable voltage charge to a fuel stream or flame that flows adjacent to a conductive or semiconductive flame holder held in electrical continuity with an activation voltage.

公开(公告)号：US20180073727A1

公开(公告)日：2018-03-15

申请号：US15818526

申请日：2017-11-20

Applicant: CLEARSIGN COMBUSTION CORPORATION

Inventor： JOSEPH COLANNINO

IPC: F23C99/00 ,  F23D11/40 ,  F23D14/82 ,  F23D14/02

Abstract: A low NOx burner is configured to support a combustion reaction at a selected fuel mixture by anchoring a flame at a conductive flame anchor responsive to current flow between charges carried by the flame and the conductive flame anchor.

公开(公告)号：US20180066846A1

公开(公告)日：2018-03-08

申请号：US15667565

申请日：2017-08-02

Applicant: CLEARSIGN COMBUSTION CORPORATION

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

IPC: F23Q7/10 ,  F23D14/02 ,  F23D14/14 ,  F23Q7/22

CPC classification number: F23Q7/10 ,  F23D14/02 ,  F23D14/14 ,  F23Q7/22

Abstract: A combustion system includes a perforated reaction holder having perforations defined to compensate for a non-uniform velocity of fuel and/or oxidant received across an input face of the perforated reaction holder.

公开(公告)号：US09879858B2

公开(公告)日：2018-01-30

申请号：US13731095

申请日：2012-12-30

Applicant: ClearSign Combustion Corporation

Inventor： David B. Goodson ,  Tracy A. Prevo ,  Joseph Colannino ,  Robert E. Breidenthal ,  Christopher A. Wiklof

IPC: F23L7/00 ,  F23D99/00 ,  F23C99/00 ,  F23D14/84

CPC classification number: F23L7/00 ,  F23C99/001 ,  F23D14/84 ,  F23D91/00

Abstract: An inertial electrode launcher may be configured to project charged particles or a voltage comprising an inertial electrode proximate a flame or combustion gas produced by the flame.