US 12,250,972 B2
Aerosol generation device and heating assembly thereof
Zhenlong Jiang, Guangdong (CN); and Pei Li, Shenzhen (CN)
Assigned to SHENZHEN SMOORE TECHNOLOGY LIMITED, Shenzhen (CN)
Filed by SHENZHEN SMOORE TECHNOLOGY LIMITED, Shenzhen (CN)
Filed on Dec. 6, 2021, as Appl. No. 17/542,493.
Claims priority of application No. PCT/CN2020/134299 (WO), filed on Dec. 7, 2020; and application No. 202110326890.5 (CN), filed on Mar. 26, 2021.
Prior Publication US 2022/0175045 A1, Jun. 9, 2022
Int. Cl. A24F 40/51 (2020.01); A24F 40/46 (2020.01); A24F 40/57 (2020.01); H05B 3/42 (2006.01)
CPC A24F 40/51 (2020.01) [A24F 40/46 (2020.01); A24F 40/57 (2020.01); H05B 3/42 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A heating assembly, characterized by comprising an electrically conductive external tube (11), an electrical resistance circuit (15) disposed in the external tube (11) and having an electrode electrically connected with a top end of the external tube (11), a first electrode lead wire (16) in electrical connection with the external tube (11), and a second electrode lead wire (17) in electrical connection with an opposite electrode of the electrical resistance circuit (15),
wherein the heating assembly further comprises a solid support bar (14) disposed in the external tube (11), and the electrical resistance circuit (15) is disposed around an upper portion of the solid support bar (14);
the second electrode lead wire (17) is connected to a lower end of the electrical resistance circuit (15) and is led out a lower end of the external tube (11) in company with a lower portion of the solid support bar (14), the second electrode lead wire (17) being located between an outer surface of the lower portion of the solid support bar (14) and an inner surface of the external tube (11);
the heating assembly further comprises a needle (12) arranged at the top end of the external tube (11);
the support bar (14) comprises a first section (141), a second section (142), and a third section 143 that are sequentially connected from top to bottom;
a diameter of the second section (142) is greater than a diameter of the first section (141) and a diameter of the third section (143);
a shoulder is formed between the first section (141) and the second section (142) and abuts a bottom surface of the needle (12);
the electrical resistance circuit (15) is wound around the second section (142); and
the first section (141) extends beyond the electrical resistance circuit (15) upwardly and is inserted into the needle (12), and the third section (143) extend beyond the electrical resistance circuit (15) downwardly.