US 11,925,214 B2
Aerosol generating device and operating method thereof
Won Kyeong Lee, Guri-si (KR); Paul Joon Sunwoo, Seoul (KR); Sung Wook Yoon, Suwon-si (KR); and Dae Nam Han, Daejeon (KR)
Assigned to KT&G CORPORATION, Daejeon (KR)
Appl. No. 16/978,279
Filed by KT&G CORPORATION, Daejeon (KR)
PCT Filed May 8, 2020, PCT No. PCT/KR2020/006075
§ 371(c)(1), (2) Date Sep. 4, 2020,
PCT Pub. No. WO2021/020699, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 10-2019-0092001 (KR), filed on Jul. 29, 2019.
Prior Publication US 2023/0096029 A1, Mar. 30, 2023
Int. Cl. A24F 40/57 (2020.01); G05D 23/24 (2006.01)
CPC A24F 40/57 (2020.01) [G05D 23/2401 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An aerosol generating device comprising:
a heater configured to heat an aerosol generating material to generate aerosol;
a memory storing a relationship between a plurality of current difference values and a plurality of heater temperature values as a lookup table; and
a controller configured to:
calculate a current flowing through the heater based on a predefined resistance of the heater and power supplied to the heater,
measure the current flowing through the heater, and
control power supplied to the heater based on a difference between the calculated current and the measured current,
wherein the controller is configured to estimate a temperature of the heater based on the difference, and adjust the power supplied to the heater according to the estimated temperature.