Disposable double-channel cigarette and preparation method thereof

Patent metadata

Field	Value
Publication number	US-10993472-B2
Application number	US-201916763230-A
Country	US
Kind code	B2
Filing date	May 28, 2019
Priority date	May 28, 2019
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

A disposable double-channel cigarette includes a tobacco unit, a heat source unit and a filter unit; wherein the tobacco unit includes a tobacco unit channel, a suction end and an ignition end; the heat source unit includes a heat source unit channel; and the filter unit includes a filter unit channel, and the filter unit is arranged at the suction end of the tobacco unit. A pneumatic device and a tobacco component are arranged in the tobacco unit channel; an air extraction device and a fuel component are arranged in the heat source unit channel; a linkage device is arranged between the pneumatic device and the air extraction device, and the linkage device transfers power between the pneumatic device and the air extraction device. A method for preparing the disposable double-channel cigarette described above is further provided.

First claim

What is claimed is:

1. A disposable double-channel cigarette, comprising:
a tobacco unit, wherein the tobacco unit comprises a tobacco unit channel, a suction end and an ignition end; and
a heat source unit, wherein the heat source unit comprises a heat source unit channel;
wherein, an axis of the tobacco unit channel and an axis of the heat source unit channel are arranged in parallel, and an air-tight heat conduction layer is arranged at a contact portion between the tobacco unit channel and the heat source unit channel, extends an entire length of the heat source unit channel, and prevents fluid flow between the tobacco unit channel and the heat source unit channel; a pneumatic device and a tobacco component are arranged in the tobacco unit channel; an air extraction device and a fuel component are arranged in the heat source unit channel;
a linkage device is arranged between the pneumatic device and the air extraction device, and the linkage device transfers power between the pneumatic device and the air extraction device.

2. The disposable double-channel cigarette of claim 1 , wherein, the tobacco unit is at least partially inserted into the heat source unit, or the heat source unit is at least partially inserted into the tobacco unit, or the tobacco unit and the heat source unit are juxtaposed and at least partially in contact with each other; wherein, a quantity of the tobacco unit is at least one, and a quantity of the heat source unit is at least one.

3. The disposable double-channel cigarette of claim 2 , wherein, the ignition end of the tobacco unit is provided with a detachable permeable flame retardant element.

4. The disposable double-channel cigarette of claim 2 , wherein, the pneumatic device is a first fan or a first turbine, and the air extraction device is a second fan or a second turbine; wherein, the pneumatic device and the air extraction device are arranged independently of each other.

5. The disposable double-channel cigarette of claim 2 , wherein, the linkage device is a magnetic linkage device or a mechanical linkage device.

6. The disposable double-channel cigarette of claim 2 , wherein, the pneumatic device and the air extraction device are arranged at the suction end of the tobacco unit.

7. The disposable double-channel cigarette of claim 2 , wherein, the heat source unit channel is provided with a burnt waste gas outlet downstream of the air extraction device.

8. The disposable double-channel cigarette of claim 2 , further comprising a filter unit, wherein the filter unit comprises a filter unit channel, and the filter unit comprising the filter unit channel is arranged at the suction end of the tobacco unit.

9. The disposable double-channel cigarette of claim 1 , wherein, the ignition end of the tobacco unit is provided with a detachable permeable flame retardant element.

10. The disposable double-channel cigarette of claim 9 , wherein the detachable permeable flame retardant element is a granular substance or a porous substance.

11. The disposable double-channel cigarette of claim 9 , wherein the detachable permeable flame retardant element is an extruded clay particle.

12. The disposable double-channel cigarette of claim 1 , wherein, the pneumatic device is a first fan or a first turbine, and the air extraction device is a second fan or a second turbine; wherein, the pneumatic device and the air extraction device are arranged independently of each other.

13. The disposable double-channel cigarette of claim 1 , wherein, the linkage device is a magnetic linkage device or a mechanical linkage device.

14. The disposable double-channel cigarette of claim 13 , wherein two parts of the linkage device are a first linkage device and a second linkage device, wherein the first linkage device is located in the tobacco unit channel and the second linkage device is located in the heat source unit channel;
the first linkage device is arranged on the pneumatic device in the tobacco unit channel; and
the second linkage device is arranged on the air extraction device in the heat source unit channel.

15. The disposable double-channel cigarette of claim 1 , wherein, the pneumatic device and the air extraction device are arranged at the suction end of the tobacco unit.

16. The disposable double-channel cigarette of claim 1 , wherein, the heat source unit channel is provided with a burnt waste gas outlet downstream of the air extraction device.

17. The disposable double-channel cigarette of claim 1 , further comprising a filter unit, wherein the filter unit comprises a filter unit channel, and the filter unit comprising the filter unit channel is arranged at the suction end of the tobacco unit.

18. A method for preparing the disposable double-channel cigarette of claim 1 , comprising the following steps:
step A, preparing the tobacco unit, wherein the tobacco unit comprises the tobacco unit channel, the pneumatic device and the tobacco component;
step B, preparing the heat source unit, wherein the heat source unit comprises the heat source unit channel, the air extraction device and the fuel component; and
step C, assembling the tobacco unit prepared in step A with the heat source unit prepared in step B to obtain the disposable double-channel cigarette; wherein the pneumatic device and the air extraction device are connected by the linkage device in a power transfer manner; the axis of the tobacco unit channel and the axis of the heat source unit channel are arranged in parallel, and the air-tight heat conduction layer is arranged at the contact portion between the tobacco unit channel and the heat source unit channel, extends the entire length of the heat source unit channel, and prevents the fluid flow between the tobacco unit channel and the heat source unit channel, and the linkage device is prepared during, before or after a preparation of the tobacco unit and the heat source unit.

19. The method of claim 18 , further comprising the following step:
step D, preparing a filter unit, wherein the filter unit comprises a filter unit channel, the filter unit is arranged at the suction end of the tobacco unit, and step C is performed before or after step D.

Assignees

• China Tobacco Yunnan Ind Co Ltd

Inventors

• Yu Yao
• Zhan Jianbo
• Li Geng
• Yu Zhenhua
• Yang Lei
• Xie jiao
• Wang Hao
• Li Juan
• Yue Baoshan

Classifications

• A24F42/80

  Manufacture · CPC title

• A24D1/22 Primary

  Cigarettes with integrated combustible heat sources, e.g. with carbonaceous heat sources · CPC title

• A24F42/60 Primary

  Constructional details · CPC title

• A24D3/17

  Filters specially adapted for simulated smoking devices · CPC title

• A24F42/10

  Devices with chemical heating means · CPC title