Tobacco heating apparatus and aerosol generation method therefor

Patent metadata

Field	Value
Publication number	US-2024000156-A1
Application number	US-202118265198-A
Country	US
Kind code	A1
Filing date	Apr 16, 2021
Priority date	Dec 4, 2020
Publication date	Jan 4, 2024
Grant date	—

Abstract

An aerosol generation method of a tobacco heating apparatus. A tobacco heating apparatus comprises a smoking set ( 1 ) and a tobacco product ( 2 ), wherein the tobacco product ( 2 ) is arranged in the smoking set ( 1 ), the smoking set ( 1 ) heats the tobacco product ( 2 ) by controlling the smoking set ( 1 ) on the basis of ignition point parameters of tobacco material, the tobacco product ( 2 ) includes a smoke extraction section ( 23 ) with a sidewall through-hole ( 24 ), and a sealing member ( 141 ) is provided between the smoking set ( 1 ) and the tobacco product ( 2 ), so as to ensure that air does not flow through tobacco materials when using, and it is ensured that the tobacco materials do not burn; and by obtaining a variation curve of an ignition point of the tobacco materials, and a heating program of the smoking set ( 1 ) is set closely following the variation curve the ignition point, thereby ensuring that the tobacco materials do not burn, and also ensuring that aroma substances of the tobacco materials are released to the maximum degree.

First claim

1 . A tobacco heating apparatus, the tobacco heating apparatus comprises a smoking set ( 1 ) and a tobacco product ( 2 ), characterized in that, the tobacco product ( 2 ) can be arranged in the smoking set ( 1 ), and the smoking set ( 1 ) heats the tobacco product ( 2 ) by controlling the smoking set ( 1 ) on the basis of an ignition point parameter of the tobacco material.

2 . The heating tobacco apparatus according to claim 1 , characterized in that, the smoking set ( 1 ) comprises a power module ( 11 ), a control module ( 12 ), and a cigarette accommodating cavity ( 14 ), wherein the power module ( 11 ) is communicated with the control module ( 12 ), and the control module ( 12 ) is communicated with the heating element coaxially arranged in the cigarette accommodating cavity ( 14 ).

3 . The heating tobacco apparatus according to claim 1 , characterized in that, the tobacco product ( 2 ) comprises a tobacco section ( 21 ) and a functional mouthpiece section ( 22 ), wherein a smoke extraction section ( 23 ) is also arranged between the tobacco section ( 21 ) and the functional mouthpiece section ( 22 ), and the tobacco section ( 21 ), the functional mouthpiece section ( 22 ) and the smoke extraction section ( 23 ) are wrapped and connected together by an external wrapping material.

4 . The heating tobacco apparatus according to claim 3 , characterized in that, the smoke extraction section ( 23 ) is a column containing a cavity structure, and at least one sidewall through-hole ( 24 ) communicated with the cavity structure is opened on a side wall of the column, a coaxial through-hole is formed on the external wrapping material in a position corresponding to the sidewall through-hole.

5 . The heating tobacco apparatus according to claim 2 , characterized in that, a sealing member ( 141 ) is provided in said cigarette accommodating cavity ( 14 ), when the tobacco product ( 2 ) is inserted into the cigarette accommodating cavity ( 14 ), said sealing member ( 141 ) seals the tobacco section ( 21 ) of the tobacco product ( 2 ), so as to ensure that the external airflow cannot flow through the tobacco section ( 21 ); the heating element is close to the tobacco section ( 21 ).

6 . The heating tobacco apparatus according to claim 2 , characterized in that, the heating element is one or more of cup-shaped, sheet-shaped or needle-shaped, and the cup-shaped heating element is arranged on an inner wall of the cigarette accommodating cavity ( 14 ), and sheet-shaped or needle-shaped heating elements is arranged on the central axis of the cigarette accommodating cavity ( 14 ).

7 . An aerosol generation method for the heating tobacco apparatus according to claim 1 , wherein the aerosol generation method comprises the following steps:
activating the heating element to heat the tobacco section; obtaining a variation curve, a corresponding relationship, and a function with an oxygen concentration of the ignition point of the tobacco material of the tobacco section by a thermogravimetry method or a hot stage method, and storing them in a control circuit; obtaining a variation curve of the oxygen concentration over time (or with the times of suction) of the tobacco section through an off-line pre-set detection method, and storing it in the control circuit; calling an oxygen concentration variation data by the control circuit, and adjusting the power output to the heating element in real time according to the variation curve, the corresponding relationship and the function with the oxygen concentration of the ignition point of the tobacco material of the tobacco section, so as to ensure that the temperature of the heating element is close to and lower than the variation curve of the ignition point of the tobacco material.

8 . The heating tobacco apparatus according to claim 1 , characterized in that, the smoking set ( 1 ) further comprises an oxygen content detection sensor ( 13 ), the control module ( 12 ) is communicated with the oxygen content detection sensor ( 13 ), and the oxygen content detection sensor ( 13 ) is communicated with the cigarette accommodating cavity ( 14 ) through a micro air passage ( 15 ).

9 . The aerosol generation method for the heating tobacco apparatus according to claim 7 , characterized in that, the variation curve of the oxygen concentration over time (or with the times of suction) of the tobacco section can be obtained in real time by the oxygen content detection sensor ( 13 ).

10 . The tobacco heating apparatus according to claim 6 , characterized in that, the heating element is a circumferential heating cup, a central heating sheet, a central heating needle, an electromagnetic heating member, a microwave heating member, and the like.

Assignees

• Zhengzhou Tobacco Res Inst Cntc
• China Tobacco Yunnan Ind Co Ltd

Inventors

• Li Bin
• Tang Jianguo
• Fu Lili
• Li Zhiqiang
• Zhang Ke
• Shang Shanzhai
• Wang Shuang
• Liao Xiaoxiang
• Wang Le
• Lei Ping
• Wang Bing
• Han Jingmei

Classifications

• A24F40/57 Primary

  Temperature control · CPC title

• A24F40/20

  Devices using solid inhalable precursors · CPC title

• A24D1/20

  Cigarettes specially adapted for simulated smoking devices · CPC title

• A24F40/46

  Shape or structure of electric heating means · CPC title

• A24F40/51

  Arrangement of sensors · CPC title