US 11,789,476 B2
Heat-not-burn (HNB) aerosol-generating devices including intra-draw heater control, and methods of controlling a heater
Zack W. Blackmon, Williamsburg, VA (US); Eric Hawes, Midlothian, VA (US); Rangaraj S. Sundar, Midlothian, VA (US); Raymond W. Lau, Richmond, VA (US); Jarrett Keen, Richmond, VA (US); and Niall Gallagher, Cambridge (GB)
Assigned to Altria Client Services LLC, Richmond, VA (US)
Filed by Altria Client Services LLC, Richmond, VA (US)
Filed on Jan. 18, 2021, as Appl. No. 17/151,409.
Prior Publication US 2022/0229453 A1, Jul. 21, 2022
Int. Cl. G05D 23/19 (2006.01); G05D 23/20 (2006.01); G05B 15/02 (2006.01)
CPC G05D 23/20 (2013.01) [G05B 15/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for controlling a heater in a non-combustible aerosol-generating device, the system comprising:
a memory storing computer-readable instructions; and
a controller configured to execute the computer-readable instructions to cause the non-combustible aerosol-generating device to,
detect an airflow in the non-combustible aerosol-generating device,
apply a first power to the heater based on the detected airflow exceeding a first airflow threshold value,
apply a second power to the heater based on a preheat temperature and the detected airflow being below a second airflow threshold value, the application of the second power being after the application of the first power and the second airflow threshold value being less than the first airflow threshold value, and
apply a third power to the heater based on the preheat temperature and the detected airflow being below the second airflow threshold value, the application of the third power being after the application of the second power, the third power being greater than the second power.