US 12,321,182 B2
Cooktop appliance with variable closed-loop controls
David William Billman, Louisville, KY (US); and Catherine Berghuis, Louisville, KY (US)
Assigned to Haier US Appliance Solutions, Inc., Wilmington, DE (US)
Filed by Haier US Appliance Solutions, Inc., Wilmington, DE (US)
Filed on Nov. 12, 2021, as Appl. No. 17/524,783.
Prior Publication US 2023/0152824 A1, May 18, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G05D 23/19 (2006.01); F23N 1/00 (2006.01); F24C 3/12 (2006.01); F24C 7/08 (2006.01)
CPC G05D 23/1902 (2013.01) [F23N 1/002 (2013.01); F24C 3/126 (2013.01); F24C 7/087 (2013.01); F23N 2235/16 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A cooktop appliance, comprising:
a user interface;
a heating element positioned at a cooking surface of the cooktop appliance;
a temperature sensor configured to measure a temperature at a utensil heated by the heating element; and
a controller, the controller configured for:
receiving a user-determined set temperature from the user interface;
receiving a precision mode initiation signal;
receiving a temperature measurement from the temperature sensor;
determining a starting temperature;
determining a set of parameters of a closed-loop algorithm for operation of the heating element corresponding to the starting temperature;
inputting the user-determined set temperature and a current temperature measurement into the closed-loop control algorithm;
determining an output of the closed-loop control algorithm using the set of parameters corresponding to the starting temperature; and
adjusting operation of the heating element according to the output of the closed-loop control algorithm;
wherein the closed-loop algorithm comprises comparing the current temperature measurement to the user-determined set temperature and generating the output of the closed-loop algorithm based on the comparison of the current temperature measurement to the user-determined set temperature using the set of parameters of the closed-loop algorithm corresponding to the starting temperature.