US 12,225,939 B2
Aerosol-generating system providing preferential evaporation of nicotine
Irene Taurino, Neuchatel (CH)
Assigned to Philip Morris Products S.A., Neuchatel (CH)
Appl. No. 17/279,380
Filed by Philip Morris Products S.A., Neuchatel (CH)
PCT Filed Sep. 25, 2019, PCT No. PCT/EP2019/075936
§ 371(c)(1), (2) Date Mar. 24, 2021,
PCT Pub. No. WO2020/064876, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 18197788 (EP), filed on Sep. 28, 2018.
Prior Publication US 2021/0392956 A1, Dec. 23, 2021
Int. Cl. A24F 40/46 (2020.01); A24B 15/16 (2020.01); A24B 15/167 (2020.01); A24B 15/24 (2006.01); A24B 15/28 (2006.01); A24B 15/32 (2006.01); A24F 40/10 (2020.01); A24F 40/44 (2020.01); A24F 40/50 (2020.01); A24F 40/51 (2020.01); A24F 40/57 (2020.01); A24F 40/60 (2020.01); A24B 15/18 (2006.01); A24F 7/00 (2006.01); A24F 40/42 (2020.01); H02J 7/00 (2006.01)
CPC A24F 40/46 (2020.01) [A24B 15/16 (2013.01); A24B 15/167 (2016.11); A24B 15/243 (2013.01); A24B 15/28 (2013.01); A24B 15/32 (2013.01); A24F 40/10 (2020.01); A24F 40/44 (2020.01); A24F 40/50 (2020.01); A24F 40/51 (2020.01); A24F 40/57 (2020.01); A24F 40/60 (2020.01); A24B 15/18 (2013.01); A24F 7/00 (2013.01); A24F 40/42 (2020.01); H02J 7/0047 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An aerosol-generating device, comprising:
a heater assembly comprising at least one heating element;
an aerosol-forming substrate proximate to the heater assembly and comprising a liquid mixture comprising nicotine and a first aerosol-former, the first aerosol-former having a boiling temperature higher than that of the nicotine;
a power supply configured to supply power to the heater assembly to generate an aerosol from the aerosol-forming substrate;
a mouthpiece configured to draw aerosol out of the aerosol-generating device upon a puff by a user; and
control circuitry configured to
control the supply of power to the heater assembly,
supply a first power to the at least one heating element of the heater assembly or to supply a power sufficient to maintain the at least one heating element at a first temperature between 150 degrees centigrade and 200 degrees centigrade, between user puffs, and
supply a second power to the at least one heating element of the heater assembly, the second power being higher than the first power or being sufficient to raise a temperature of the at least one heating element above the first temperature to a second temperature between 200 degrees centigrade and 250 degrees centigrade, during user puffs, in order to provide preferential evaporation of nicotine over that of the first aerosol former.