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公开(公告)号：WO2022245674A2
公开(公告)日：2022-11-24
申请号：PCT/US2022/029325
申请日：2022-05-13
Applicant: CLEARSIGN TECHNOLOGIES CORPORATION
Inventor： KENDRICK, Donald , SANTANA, William A.
Abstract: A boiler burner is configured for use in a horizontally fired boiler, such as a flame tube boiler or a water tube boiler. The burner may include proximal fuel and air sources providing a flow into a proximal inlet of a mixing tube that conveys the main fuel and combustion air to an outlet of the mixing tube. The burner may also include a flange configured to be mounted to an opening of a boiler and structured to support a weight of the boiler burner when the boiler burner is oriented horizontally for horizontal firing. A distal pilot burner disposed distal to the outlet of the mixing tube may be configured to hold a combustion reaction of the main fuel and combustion air.
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公开(公告)号：WO2022192922A2
公开(公告)日：2022-09-15
申请号：PCT/US2022/071145
申请日：2022-03-14
Applicant: CLEARSIGN TECHNOLOGIES CORPORATION
Inventor： IYER, Venkatesh , LEWALLEN, Jeff , DELLER, Colin , KENDRICK, Donald
Abstract: According to an embodiment, a burner system provides a flow of premixed fuel and flue gas, and combustion airflow is provided at an intended distal flame front position. The burner system may include a pilot burner. A burner system may include a pre-mix pilot burner. In an embodiment a main fuel may include a high hydrogen content.
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公开(公告)号：WO2021159019A1
公开(公告)日：2021-08-12
申请号：PCT/US2021/016952
申请日：2021-02-05
Applicant: CLEARSIGN TECHNOLOGIES CORPORATION
Inventor： DELLER, Colin James , HOSIE, Matt , KARKOW, Douglas W. , KENDRICK, Donald , WIKLOF, Christopher A.
Abstract: A low emissions modular burner system includes a plurality of 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 burner system includes a common combustion air source configured to provide combustion air to each of the plurality of burner modules, and a burner system wall encircling all of the plurality of burner modules, the burner system wall being configured to at least laterally contain combustion products corresponding to all of the plurality of burner modules.
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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
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.
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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
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.
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Patent Agency Ranking
公开(公告)号：US12007301B2
公开(公告)日：2024-06-11
申请号：US17135517
申请日：2020-12-28
Applicant: ClearSign Technologies Corporation
Inventor： Robert Geiger , Jackson Matthew Pleis , Donald Kendrick , Christopher A. Wiklof
CPC classification number: G01M15/14 , F23D11/406 , F23D14/145 , F23N1/022 , F23N5/022 , F23N5/123 , F23N5/184 , G01N33/0027 , G01N33/0062 , G01N33/0073 , F23D2208/10 , F23D2212/103 , F23N2237/26
Abstract: A system for measuring a fuel-oxidant equivalence ratio includes at least one wall defining a gas volume including fuel and air. A gas ionization source is configured to cause a formation of ions in the gas. A power supply is configured to output a time-varying voltage. A first electrode is disposed in the gas volume, operatively coupled to the power supply, and configured to carry the time-varying voltage. A second electrode is arranged to operatively couple to a signal output by the first electrode after the signal passes through the gas volume. Characteristics of the received signal indicate the fuel-oxidant equivalence ratio.
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公开(公告)号：US11906160B2
公开(公告)日：2024-02-20
申请号：US16678120
申请日：2019-11-08
Applicant: ClearSign Technologies Corporation
Inventor： Donald Kendrick
CPC classification number: F23D14/64 , F23C9/00 , F23D11/103 , F23D11/402 , F23D14/02 , F23D14/70 , F23D17/00 , F23D2203/007 , F23D2203/10 , F23D2203/102 , F23D2204/00 , F23D2212/101
Abstract: A combustion system includes a fuel distributor configured to output a fuel, an oxidant source configured to output an oxidant, and a mixing tube defining a mixing volume aligned to receive the fuel and oxidant. The mixing tube is shaped to convey the fuel and the oxidant through the mixing volume at a bulk velocity higher than a flame propagation speed. The combustion system includes a flame holder aligned to receive the mixed fuel and oxidant and to support a combustion reaction of the fuel and the oxidant.
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公开(公告)号：US11435143B2
公开(公告)日：2022-09-06
申请号：US16166509
申请日：2018-10-22
Applicant: CLEARSIGN TECHNOLOGIES CORPORATION
Inventor： Donald Kendrick , James K. Danise , Douglas W. Karkow , Christopher A. Wiklof
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.
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公开(公告)号：US20200088402A1
公开(公告)日：2020-03-19
申请号：US16557840
申请日：2019-08-30
Applicant: CLEARSIGN TECHNOLOGIES CORPORATION
Inventor： DONALD KENDRICK , CHRISTOPHER A. WIKLOF
Abstract: A fuel nozzle assembly includes one or more tapered fuel nozzles. Each tapered fuel nozzle includes an acute trailing edge or tip at a top portion of the fuel nozzle. One or more fuel orifices are arranged proximate the acute trailing edge or tip. A tapered fuel nozzle having a toroidal airfoil structure includes a fuel channel to distribute a fuel to the fuel orifice(s). The fuel nozzle assembly may be provided as part of a burner system, including a perforated flame holder, and associated method, in which the fuel nozzle assembly is oriented to direct fuel from the fuel orifices toward the perforated flame holder.
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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.
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