	US 12,102,128 B2
	Cigarette heater and electric heating smoking apparatus
Yunkai Zhang, Shenzhen (CN); Baoling Lei, Shenzhen (CN); Shuhui Tang, Shenzhen (CN); Ruilong Hu, Shenzhen (CN); Zhongli Xu, Shenzhen (CN); and Yonghai Li, Shenzhen (CN)
Assigned to Shenzhen First Union Technology Co., Ltd., Shenzhen (CN)
Appl. No. 17/425,886
Filed by Shenzhen First Union Technology Co., Ltd., Shenzhen (CN)
PCT Filed Jan. 19, 2020, PCT No. PCT/CN2020/072996 § 371(c)(1), (2) Date Jul. 26, 2021, PCT Pub. No. WO2020/151618, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 201920135571.4 (CN), filed on Jan. 26, 2019; and application No. 201920135572.9 (CN), filed on Jan. 26, 2019.
Prior Publication US 2022/0160040 A1, May 26, 2022
Int. Cl. A24F 40/465 (2020.01); A24F 40/20 (2020.01); A24F 40/42 (2020.01)

CPC A24F 40/465 (2020.01) [A24F 40/20 (2020.01); A24F 40/42 (2020.01)]

19 Claims

1. A cigarette heater comprising a heating assembly and a heat insulation assembly configured for insulating the heating assembly, the heating assembly comprising an elongated heating cavity configured for accommodating a cigarette and a heating body configured for heating the cigarette;

wherein the heat insulation assembly comprises an anisotropic material layer sleeved outside the heating assembly, the anisotropic material layer having a lower thermal conductivity coefficient in the radial direction than in the axial direction, and the anisotropic material layer configured for reducing conduction of heat from inside the heating cavity towards periphery of the heating cavity along the radial direction; wherein a first air medium layer is formed between the heat insulation assembly and the heating body.