公开(公告)号：EP3739263A1

公开(公告)日：2020-11-18

申请号：EP20179720.6

申请日：2014-02-14

Applicant: ClearSign Technologies Corporation

Inventor： KARKOW, Douglas W. ,  BREIDENTHAL, Robert E. ,  COLANNINO, Joseph ,  WIKLOF, Christopher A.

IPC: F23D14/26 ,  F23D14/80 ,  F23C5/00 ,  F23D14/14 ,  F23D11/44 ,  F23D11/42

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).

公开(公告)号：US20250093024A1

公开(公告)日：2025-03-20

申请号：US18906154

申请日：2024-10-03

Applicant: ClearSign Technologies Corporation

Inventor： COLIN JAMES DELLER ,  DONALD KENDRICK ,  VENKATESH IYER ,  DOUGLAS W. KARKOW

IPC: F23C9/08 ,  F23C6/04 ,  F23D14/04 ,  F23D14/26 ,  F23D14/64 ,  F23D14/82 ,  F23K5/00 ,  F23L7/00 ,  F23Q9/00

Abstract: A burner includes a distal flame holder, first and second fuel nozzles, a fuel and oxidant source, and a mixing tube disposed upstream from the distal flame holder. Fuel emitted from the first fuel nozzle mixes with oxidant from the oxidant source to form a fuel and oxidant mixture to support combustion in the distal flame holder. A non-reactive fluid source such as recirculated flue gas provides a non-reactive fluid for dilution of the fuel and oxidant mixture to prevent flashback.

公开(公告)号：US12247733B2

公开(公告)日：2025-03-11

申请号：US17068741

申请日：2020-10-12

Applicant: ClearSign Technologies Corporation

Inventor： Donald Kendrick ,  William A. Santana ,  Colin James Deller

IPC: F23D14/02 ,  F23C99/00 ,  F23D11/40 ,  F23D14/12 ,  F23D14/14

Abstract: Embodiments disclosed herein are directed to devices and methods for improving operation of a combustion system. According to various embodiments disclosed herein, a prefabricated integrated combustion assembly is disclosed that may be installed into a combustion chamber of a combustion system. The combustion system may be a new combustion system that is being manufactured or a conventional combustion system that is being retrofitted.

公开(公告)号：US11248786B2

公开(公告)日：2022-02-15

申请号：US16728548

申请日：2019-12-27

Applicant: CLEARSIGN TECHNOLOGIES CORPORATION

Inventor： Douglas W. Karkow ,  Joseph Colannino ,  James K. Dansie ,  Jesse Dumas ,  Donald Kendrick ,  Christopher A. Wiklof

IPC: F23D11/44 ,  F23N5/24 ,  F23N5/02 ,  F23D14/14 ,  F23D14/72 ,  F23D14/26 ,  F23D9/00 ,  F23D11/38

Abstract: A method for a combustion system includes outputting fuel from an adjustable-position fuel nozzle onto a perforated flame holder, the fuel being directed for mixture with an oxidant en route to the perforated flame holder. A combustion reaction of the fuel and the oxidant is supported within the perforated flame holder. A position of the adjustable-position fuel nozzle may be changed relative to the flame holder. A first flow of fuel may be output when the adjustable position fuel nozzle is in an extended state, and a second flow of fuel may be output when the adjustable-position fuel nozzle is in a retracted state.

公开(公告)号：US20210239317A1

公开(公告)日：2021-08-05

申请号：US16782861

申请日：2020-02-05

Applicant: ClearSign Technologies Corporation

Inventor： COLIN JAMES DELLER ,  MATT HOSIE ,  DOUGLAS W. KARKOW ,  DONALD KENDRICK ,  CHRISTOPHER A. WIKLOF

IPC: F23G7/08 ,  F23D14/16 ,  F23N1/00 ,  F23N3/00

Abstract: A low emissions modular flare stack includes a plurality of flare stack burner modules, each including a main fuel source configured to selectively deliver a main fuel stream for dilution by a flow of combustion air, a main igniter configured to cause ignition of the main fuel stream emitted from the main fuel source, a distal flame holder configured to hold a combustion reaction supported by the main fuel stream when the distal flame holder is at or above a predetermined temperature, and a pre-heating apparatus configured to pre-heat the distal flame holder to the predetermined temperature. The low emissions modular flare stack includes a common combustion air source configured to provide combustion air to each of the plurality of flare stack burner modules, and a wall encircling all of the plurality of flare stack burner modules, the wall being configured to laterally contain combustion products corresponding to all of the plurality of flare stack burner modules.

公开(公告)号：US20210131660A1

公开(公告)日：2021-05-06

申请号：US17068741

申请日：2020-10-12

Applicant: ClearSign Technologies Corporation

Inventor： DONALD KENDRICK ,  WILLIAM A. SANTANA ,  CHRISTOPHER A. WIKLOF

IPC: F23C99/00 ,  F23D14/14 ,  F23D14/02

Abstract: Embodiments disclosed herein are directed to devices and methods for improving operation of a combustion system. According to various embodiments disclosed herein, a prefabricated integrated combustion assembly is disclosed that may be installed into a combustion chamber of a combustion system. The combustion system may be a new combustion system that is being manufactured or a conventional combustion system that is being retrofitted.

公开(公告)号：US10808925B2

公开(公告)日：2020-10-20

申请号：US16217913

申请日：2018-12-12

Applicant: CLEARSIGN COMBUSTION CORPORATION

Inventor： Douglas W. Karkow ,  Christopher A. Wiklof

IPC: F23C99/00 ,  F23Q7/06 ,  F23N5/12 ,  F23D14/84

Abstract: A combustion fluid flow barrier includes an aperture to control combustion fluid flow. The combustion fluid is charged by a charge generator. The combustion fluid flow barrier includes at least one flow control electrode operatively coupled to the aperture and configured to selectively allow, attract, or resist passage of the charged combustion fluid through the aperture, depending on voltage applied to the flow control electrode.

公开(公告)号：EP3814684B1

公开(公告)日：2024-07-17

申请号：EP19825626.5

申请日：2019-06-27

IPC: F23N1/02 ,  F23N5/00 ,  F23N5/18 ,  F23N5/12

CPC classification number: F23D11/406 ,  F23N5/123 ,  F23N5/022 ,  F23N5/184 ,  F23N5/02 ,  F23N1/022 ,  F23N2237/2620200101 ,  F23N5/003 ,  F23N2229/0620200101 ,  F23N2225/3020200101 ,  F23N5/12 ,  F23D2212/10320130101 ,  F23D2212/10120130101 ,  F23D14/145 ,  G01N27/70

公开(公告)号：US20250164104A1

公开(公告)日：2025-05-22

申请号：US19030793

申请日：2025-01-17

Applicant: ClearSign Technologies Corporation

Inventor： DONALD KENDRICK ,  WILLIAM A. SANTANA ,  COLIN JAMES DELLER

IPC: F23C99/00 ,  F23D14/02 ,  F23D14/12 ,  F23D14/14

Abstract: Embodiments disclosed herein are directed to devices and methods for improving operation of a combustion system. According to various embodiments disclosed herein, a prefabricated integrated combustion assembly is disclosed that may be installed into a combustion chamber of a combustion system. The combustion system may be a new combustion system that is being manufactured or a conventional combustion system that is being retrofitted.

公开(公告)号：US20240200771A1

公开(公告)日：2024-06-20

申请号：US18513131

申请日：2023-11-17

Applicant: ClearSign Technologies Corporation

Inventor： Donald Kendrick ,  William A. Santana ,  Venkatesh Iyer

IPC: F23D14/26 ,  F23D14/02 ,  F23D14/48 ,  F23D14/70 ,  F23D14/84

CPC classification number: F23D14/26 ,  F23D14/48 ,  F23D14/70 ,  F23D14/84 ,  F23D14/02 ,  F23D2212/20 ,  F23D2900/00014

Abstract: According to embodiments, burner systems include a distal flame holder and distal pilot burner formed at least partially from shared structure.