US 11,953,201 B2
Control system and method for a burner with a distal flame holder
Douglas W. Karkow, Mount Vernon, IA (US); Donald Kendrick, Bellevue, WA (US); James K. Dansie, Seattle, WA (US); and Christopher A. Wiklof, Everett, WA (US)
Assigned to ClearSign Technologies Corporation, Tulsa, OK (US)
Filed by ClearSign Technologies Corporation, Tulsa, OK (US)
Filed on Jan. 17, 2020, as Appl. No. 16/746,743.
Application 16/746,743 is a continuation in part of application No. PCT/US2018/042935, filed on Jul. 19, 2018.
Application PCT/US2018/042935 is a continuation in part of application No. 16/444,420, filed on Jun. 18, 2019, granted, now 11,460,188, issued on Oct. 4, 2022.
Application 16/444,420 is a continuation in part of application No. 15/215,401, filed on Jul. 20, 2016, granted, now 10,359,213, issued on Jul. 23, 2019.
Application 15/215,401 is a continuation in part of application No. PCT/US2014/016622, filed on Feb. 14, 2014.
Application PCT/US2014/016622 is a continuation in part of application No. PCT/US2014/016632, filed on Feb. 14, 2014.
Claims priority of provisional application 62/534,193, filed on Jul. 18, 2017.
Claims priority of provisional application 61/931,407, filed on Jan. 24, 2014.
Claims priority of provisional application 61/765,022, filed on Feb. 14, 2013.
Prior Publication US 2020/0224873 A1, Jul. 16, 2020
Prior Publication US 2021/0164652 A9, Jun. 3, 2021
Int. Cl. F23D 14/82 (2006.01); F23D 14/22 (2006.01); F23D 14/32 (2006.01); F23D 14/58 (2006.01); F23N 5/00 (2006.01); F23N 5/24 (2006.01); F23R 3/18 (2006.01)
CPC F23D 14/825 (2013.01) [F23D 14/22 (2013.01); F23D 14/32 (2013.01); F23D 14/58 (2013.01); F23N 5/242 (2013.01); F23N 5/006 (2013.01); F23R 3/18 (2013.01)] 47 Claims
OG exemplary drawing
 
1. A combustion system, comprising:
a pilot fuel distributor configured to support a pilot flame by outputting a pilot fuel into a furnace volume at least during a preheating state;
a main fuel distributor configured to output a main fuel into the furnace volume during a standard operating state;
a distal flame holder positioned in the furnace volume to be preheated by the pilot flame during the preheating state and to support a combustion reaction of the main fuel and an oxidant at least adjacent to the distal flame holder during the standard operating state;
a pilot flame sensor configured to sense a condition of the pilot flame and to output a sensor signal indicative of the condition of the pilot flame;
a distal flame holder sensor configured to sense a condition of the distal flame holder and to generate a sensor signal indicative of the condition of the distal flame holder;
one or more actuators configured to adjust a flow of the main fuel from the main fuel distributor and to adjust a flow of the pilot fuel from the pilot fuel distributor; and
a controller communicatively coupled to the actuators, the pilot flame sensor, and the distal flame holder sensor, the controller being configured to receive the sensor signals from the pilot flame sensor and the distal flame holder sensor and to control the actuators to adjust the flow of the pilot fuel and the main fuel responsive to the sensor signals and in accordance with software instructions stored in a non-transitory computer readable medium coupled to the controller.