US 12,484,639 B2
Heater module, method of manufacturing the heater module, and aerosol-generating device with the heater module
Dong Sung Kim, Seoul (KR); Won Kyeong Lee, Gyeonggi-do (KR); Heon Jun Jeong, Seoul (KR); and Jae Sung Choi, Gyeonggi-do (KR)
Assigned to KT&G CORPORATION, Daejeon (KR)
Appl. No. 17/434,170
Filed by KT&G CORPORATION, Daejeon (KR)
PCT Filed Mar. 10, 2021, PCT No. PCT/KR2021/002985
§ 371(c)(1), (2) Date Aug. 26, 2021,
PCT Pub. No. WO2021/246621, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 10-2020-0067175 (KR), filed on Jun. 3, 2020.
Prior Publication US 2022/0354184 A1, Nov. 10, 2022
Int. Cl. A24F 40/70 (2020.01); A24F 40/40 (2020.01); A24F 40/46 (2020.01); A24F 40/465 (2020.01); H05B 6/10 (2006.01); A24F 40/20 (2020.01); A24F 40/30 (2020.01); A24F 40/50 (2020.01)
CPC A24F 40/70 (2020.01) [A24F 40/40 (2020.01); A24F 40/46 (2020.01); A24F 40/465 (2020.01); H05B 6/10 (2013.01); A24F 40/20 (2020.01); A24F 40/30 (2020.01); A24F 40/50 (2020.01); H05B 6/105 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method of manufacturing a heater module for an aerosol-generating device, the method comprising:
preparing a heat transfer pipe having a hollow shape and including a thermal conductive material;
forming an assembly of the heat transfer pipe and a cover by insert molding in which the heat transfer pipe is placed in a mold and resin is injected into the mold, such that one end of the cover is integrally molded to an end of the heat transfer pipe while a side wall of the cover is spaced apart from the heat transfer pipe and surrounds the heat transfer pipe;
arranging a heater on an outer surface of the heat transfer pipe; and
sealing, with a sealing stopper, a space between the heat transfer pipe and the cover such that internal pressure of the space is lower than atmospheric pressure,
wherein the space, which has the internal pressure lower than the atmospheric pressure, is partially defined by the heater and the sealing stopper, and
wherein the cover comprises a single body formed from the resin and comprising the one end and the side wall.
 
12. A heater module for an aerosol-generating device, comprising:
a heat transfer pipe having a hollow shape and including a thermal conductive material;
a cover comprising a single body formed from resin and having one end integrally molded to an end of the heat transfer pipe, and a side wall of the single body spaced apart from the heat transfer pipe and surrounding the heat transfer pipe;
a heater arranged on an outer surface of the heat transfer pipe and configured to generate heat; and
a sealing stopper that seals a space between the heat transfer pipe and the cover such that internal pressure of the space is lower than atmospheric pressure,
wherein the space, which has the internal pressure lower than the atmospheric pressure, is partially defined by the heater and the sealing stopper.