Back to results
US 10,077,899 B2Granted
Startup method and mechanism for a burner having a perforated flame holder
AssigneeClearsign Combustion Corporation
InventorsDouglas W. Karkow, Joseph Colannino, Igor A. Krichtafovitch, Christopher A. Wiklof
Life of this patent
Estimating the term…
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.
Claims8
A burner, comprising:
- a primary nozzle having a longitudinal axis and configured to emit a fuel flow;
- a primary flame holder having first and second faces and a plurality of apertures extending through the flame holder from the first face to the second face, positioned with the first face toward the nozzle and intersecting the longitudinal axis of the nozzle;
- and
- a preheat mechanism configured to preheat the primary flame holder, the preheat mechanism including:
- a preheat nozzle;
- a secondary flame holder configured to support a flame at a position between the primary nozzle and the first face of the primary flame holder and to introduce turbulence into the fuel flow emitted by the primary nozzle;
- and
- a mechanism configured to move the secondary flame holder between an operative and an inoperative position.
5 more elements
A method, comprising:
- performing a burner startup procedure, including applying thermal energy to a primary flame holder by supporting a preheat flame at a position between a primary nozzle and the primary flame holder with a preheat nozzle and a secondary flame holder, the secondary flame holder being positioned between the primary nozzle and the primary flame holder;
- terminating the burner startup procedure after a temperature of a portion of the primary flame holder is above a startup temperature threshold;
- emitting a flow of fuel from the primary nozzle at an operational rate;
- introducing turbulence into the flow of fuel with the secondary flame holder;
- supporting a flame within a plurality of apertures extending through the primary flame holder;
- and
- moving the secondary flame holder between an operative position and an inoperative position with a mechanism.
4 more elements
Dependencies are inferred from the claim text.