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

IPC: F27D99/00 ,  F23D14/14 ,  F23D14/58 ,  F23C99/00 ,  F23D14/26 ,  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：US20240401798A1

公开(公告)日：2024-12-05

申请号：US18737219

申请日：2024-06-07

Applicant: ClearSign Technologies Corporation

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

IPC: F23D11/40 ,  F23D14/58

Abstract: According to embodiments, burner systems include a first plurality of main fuel nozzles positioned in a flame tube or combustion chamber and configured to supply a flow of main fuel to a burner in the flame tube, and a second plurality of main fuel nozzles positioned outside the flame tube or combustion chamber and configured to introduce a flow of main fuel into a combustion air flow that is introduced to the burner.

公开(公告)号：US11460188B2

公开(公告)日：2022-10-04

申请号：US16444420

申请日：2019-06-18

Applicant: ClearSign Technologies Corporation

Inventor： Donald Kendrick ,  Douglas W. Karkow ,  Venkatesh Iyer ,  James K. Dansie ,  Jonathan Bucher ,  Aaron Salzbrun

IPC: F23D14/14 ,  F23C3/00 ,  F23C6/02 ,  F23C99/00

Abstract: According to an embodiment, a fired heater includes a fuel and combustion air source configured to output fuel and combustion air into a combustion volume, the combustion volume including a combustion volume wall defining a lateral extent separate from an exterior volume. According to an embodiment, the fired heater includes a boiler heater and the combustion volume wall comprises a combustion pipe defining a lateral extent of the combustion volume, the combustion pipe being disposed to separate the combustion volume from a water and steam volume. The fired heater includes a mixing tube aligned to receive the fuel and combustion air from the fuel and combustion air source. The mixing tube may be separated from the combustion volume wall by a separation volume. The fired heater includes a bluff body flame holder aligned to receive a fuel and combustion air mixture from an outlet end of the mixing tube. The bluff body flame holder may be configured to hold a combustion reaction for heating a combustion volume wall. The combustion volume wall may include a combustion pipe. The combustion pipe may be configured to heat the water in the water and steam volume.

公开(公告)号：US10578301B2

公开(公告)日：2020-03-03

申请号：US15663458

申请日：2017-07-28

Applicant: CLEARSIGN TECHNOLOGIES CORPORATION

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

IPC: F23D11/44 ,  F23D9/00 ,  F23D11/38

Abstract: A combustion system includes a perforated flame holder, an oxidant source, and an adjustable fuel nozzle. The oxidant source outputs oxidant. The adjustable fuel nozzle outputs fuel onto the perforated flame holder. The perforated flame holder supports a combustion reaction of the fuel and oxidant within the perforated flame holder. The position of the adjustable nozzle relative to the perforated flame holder can be adjusted to achieve selected characteristics of the combustion reaction within the perforated flame holder.