US 11,937,644 B2
Induction heating type aerosol generating device for temperature control
Jaemin Lee, Siheung-si (KR); Sang Kyu Park, Seoul (KR); Hyung Seok Lee, Seoul (KR); and Soung Ho Ju, Daejeon (KR)
Assigned to KT&G CORPORATION, Daejeon (KR)
Filed by KT&G CORPORATION, Daejeon (KR)
Filed on May 4, 2023, as Appl. No. 18/312,386.
Application 18/312,386 is a continuation of application No. 17/780,706, previously published as PCT/KR2021/012058, filed on Sep. 6, 2021.
Claims priority of application No. 10-2020-0113745 (KR), filed on Sep. 7, 2020; and application No. 10-2021-0087858 (KR), filed on Jul. 5, 2021.
Prior Publication US 2023/0309624 A1, Oct. 5, 2023
Int. Cl. A24F 13/00 (2006.01); A24F 40/20 (2020.01); A24F 40/465 (2020.01); A24F 40/57 (2020.01); A24F 40/65 (2020.01); A24F 40/95 (2020.01); H05B 6/06 (2006.01); H05B 6/10 (2006.01)
CPC A24F 40/465 (2020.01) [A24F 40/20 (2020.01); A24F 40/57 (2020.01); A24F 40/65 (2020.01); A24F 40/95 (2020.01); H05B 6/06 (2013.01); H05B 6/108 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An aerosol-generating device in which an accommodation space for accommodating an aerosol-generating substrate is formed, wherein a susceptor included in the aerosol-generating substrate is heated in an induction heating method, the aerosol-generating device comprising:
a battery for supplying direct current (DC) power;
a power converter including at least one switching element and configured to convert the DC power into alternating current (AC) power;
a coil that is wound along the accommodation space, extends in a lengthwise direction of the aerosol-generating device, and is configured to heat the susceptor by applying an alternating magnetic field, of which a direction periodically changes, to the susceptor included in the aerosol-generating substrate according to the AC power converted by the power converter; and
a controller configured to control a time to supply a current to the coil in a state where a duty and a frequency of the current are fixed so that a temperature of the susceptor reaches a target temperature that is preset.