US 11,906,160 B2
Combustion system including a mixing tube and a flame holder
Donald Kendrick, Bellevue, WA (US)
Assigned to ClearSign Technologies Corporation, Tulsa, OK (US)
Filed by ClearSign Technologies Corporation, Seattle, WA (US)
Filed on Nov. 8, 2019, as Appl. No. 16/678,120.
Application 16/678,120 is a continuation in part of application No. PCT/US2018/031449, filed on May 7, 2018.
Claims priority of provisional application 62/502,869, filed on May 8, 2017.
Prior Publication US 2020/0141573 A1, May 7, 2020
Int. Cl. F23D 14/64 (2006.01); F23C 9/00 (2006.01); F23D 11/10 (2006.01); F23D 11/40 (2006.01); F23D 14/02 (2006.01); F23D 14/70 (2006.01); F23D 17/00 (2006.01)
CPC F23D 14/64 (2013.01) [F23C 9/00 (2013.01); F23D 11/103 (2013.01); F23D 11/402 (2013.01); F23D 14/02 (2013.01); F23D 14/70 (2013.01); F23D 17/00 (2013.01); F23D 2203/007 (2013.01); F23D 2203/10 (2013.01); F23D 2203/102 (2013.01); F23D 2204/00 (2013.01); F23D 2212/101 (2013.01)] 43 Claims
OG exemplary drawing
 
1. A combustion system, comprising:
a fuel distributor configured to output a fuel;
an oxidant source configured to output an oxidant;
a mixing tube defining a mixing volume aligned to receive the fuel and the oxidant, the mixing tube being shaped to convey the fuel and the oxidant through the mixing volume at a bulk velocity higher than a flame propagation speed, the mixing tube further being sized for a residence time shorter than a chemical ignition delay time of the fuel and the oxidant traversing the mixing volume; and
a perforated flame holder aligned to receive a mixture of the fuel and the oxidant from the mixing tube, the flame holder being configured to support a combustion reaction of the mixture of the fuel and the oxidant within or adjacent to the flame holder.