CN-122004538-A - Cigarette end sealing cylinder, heating cigarette smoking set and heating cigarette system

CN122004538ACN 122004538 ACN122004538 ACN 122004538ACN-122004538-A

Abstract

The invention belongs to the technical field of heating cigarettes, and particularly relates to a cigarette end sealing cylinder, a heating cigarette smoking set and a heating cigarette system. The cigarette end sealing cylinder is of a hollow cylindrical structure with a sealed bottom, the inner wall of the cigarette end sealing cylinder is provided with a bottom annular cigarette sealing piece positioned at the bottom of the cigarette end sealing cylinder and/or a middle annular cigarette sealing piece positioned in the middle of the cigarette end sealing cylinder, the bottom annular sealing piece and/or the middle annular cigarette sealing piece are/is used for sealing a gap between a heating cigarette smoking section and the cigarette end sealing cylinder, and the cross section area of the hollow part of the bottom annular cigarette sealing piece or the middle annular cigarette sealing piece is gradually reduced from the top to the bottom of the cigarette end sealing cylinder.

Inventors

LI BIN
FU LILI
LI HAIJIE
ZHANG QI
ZHANG YUE

Assignees

中国烟草总公司郑州烟草研究院

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (10)

1. The cigarette end sealing cylinder is characterized in that the cigarette end sealing cylinder is of a hollow cylindrical structure with a sealed bottom, and the inner wall of the cigarette end sealing cylinder is provided with a bottom annular cigarette sealing piece positioned at the bottom of the cigarette end sealing cylinder and/or a middle annular cigarette sealing piece positioned in the middle of the cigarette end sealing cylinder; the bottom annular cigarette sealing piece and/or the middle annular cigarette sealing piece are used for sealing a gap between a heating cigarette smoke section and the cigarette end sealing cylinder; The cross-sectional area of the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal gradually decreases from the top to the bottom of the cigarette end seal cartridge.
2. The cigarette end seal cartridge of claim 1 wherein the cross-sectional circumference of the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal is constant or reduced by no more than 5%.
3. The heated cigarette smoking article of claim 1, wherein the cross-section of the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal is eventually changed from an initial circular shape to a rectangular, oval or racetrack shape from the top to the bottom of the cigarette end seal cartridge.
4. The heated cigarette smoking article of claim 1, wherein said central annular cigarette seals are single or multiple in number; The plurality of middle annular cigarette sealing elements are arranged at intervals along the axial direction of the cigarette end sealing cylinder.
5. The heated cigarette smoking article of claim 4, wherein the ratio of the initial circular area to the area of the inner cavity of the end seal cartridge is 85% -98%.
6. The cigarette end seal cartridge of claim 1 wherein the height of the bottom annular seal element is 0.1-0.8 times the height of the cigarette end seal cartridge; The ratio of the distance between the top surface of the topmost middle annular sealing element and the bottom of the cigarette end sealing cylinder to the height of the cigarette end sealing cylinder is 0.2-0.8. The top surface of the bottom annular cigarette sealing piece is connected with the top surface of the cigarette end sealing cylinder through a slope so as to facilitate the insertion of cigarettes; The top surface of the topmost middle annular cigarette sealing piece is connected with the top surface of the cigarette end sealing cylinder through a slope so as to facilitate cigarette insertion.
7. The cigarette end seal cartridge of claim 1 wherein the bottom annular seal member inner wall is sloped.
8. A heating cigarette smoking set, which is characterized in that the heating cigarette smoking set comprises a cigarette end sealing cylinder according to any one of claims 1-7 and a heat source positioned at the periphery of the cigarette end sealing cylinder.
9. A heated cigarette system, comprising the bottom sealed heated cigarette smoking article of claim 8 and a heated cigarette; the circumference of the cross section of the hollow part of the bottom annular cigarette sealing piece or the middle annular cigarette sealing piece is always unchanged and is equal to the circumference of the cross section of the heating cigarette smoking section, or the circumference of the cross section of the hollow part of the bottom annular cigarette sealing piece or the middle annular cigarette sealing piece is reduced by not more than 5% from the top to the bottom of the cigarette end sealing barrel, and the circumference of the cross section of the hollow part of the top bottom annular cigarette sealing piece or the middle annular cigarette sealing piece is equal to the circumference of the cross section of the heating cigarette smoking section.
10. The heated cigarette system of claim 9 wherein the heated cigarette comprises a smoke section, a smoke mixing section and a filter section, the smoke mixing section being a hollow cylinder, the smoke mixing section side wall having a through hole.

Description

Cigarette end sealing cylinder, heating cigarette smoking set and heating cigarette system Technical Field The invention belongs to the technical field of heating cigarettes, and particularly relates to a cigarette end sealing cylinder, a heating cigarette smoking set and a heating cigarette system. Background The traditional cigarettes, electronic cigarettes, heating cigarettes, buccal cigarettes, nicotine bags and other tobacco products and the like all take nicotine delivery as main consumption characteristics, and novel tobacco products such as the electronic cigarettes, the heating cigarettes and the nicotine bags all show little harm to consumers, can effectively transfer nicotine and are more and more favored by consumers, and in recent years, show rapid growth trend in the international tobacco consumption market and are the focus of attention of various large tobacco manufacturers. Especially, heated cigarettes are expected to become major tobacco consumer products because of their rapid development in the international market due to their similar smoke characteristics as conventional combustion type cigarettes. Innovations for heating cigarettes are mainly in the fields of heating cigarette structures, heating modes, close combination with cigarettes, promotion of aerosol generation in tobacco products, efficient delivery to consumers and the like. The prior art discloses a closed heating cigarette (China patent 202010241676.5, 201911021676.8, 201911021823 and the like filed by the applicant). The cigarette generally comprises an aerosol generating substrate section, a hollow structure smoke mixing section and a filter tip section, specifically, the upstream end face of the aerosol generating substrate is sealed in a sealing mode by a matched smoking set, and a rod or a gas barrier film with a sealing function can be compounded on the upstream end face of the aerosol generating substrate. And an air flow channel is arranged on the flue gas mixing section (for example, a pore canal with controllable size is arranged on the side wall of the hollow structure at the flue gas mixing section). During smoking, air does not pass through the aerosol generating substrate, air enters the hollow structural cavity of the smoke mixing section through the side wall pore canal, negative pressure is formed by the fluid flow of the smoke mixing section, heated aerosol is extracted out due to the action of pressure difference, the heated aerosol is mixed with air entering from the outside through the side wall pore canal, and then the aerosol is transmitted out through the filter tip section, and the main air flow (the weight ratio of the main air flow is 92% -98%) is air entering from the outside through the side wall pore canal, so that the heated cigarette does not need to cool the aerosol formed by mixing. However, there are still problems of insufficient aerosol generation, low conversion of the effective substances of the aerosol-generating substrate, and long heating waiting time. The present application has been proposed in order to further improve the aerosol generation and transfer efficiency. Disclosure of Invention The first aspect of the application provides a cigarette end sealing cylinder, which is of a hollow cylindrical structure with a sealed bottom, wherein the inner wall of the cigarette end sealing cylinder is provided with a bottom annular sealing element positioned at the bottom of the cigarette end sealing cylinder and/or a middle annular sealing element positioned at the middle of the cigarette end sealing cylinder; The bottom annular sealing element and/or the middle annular sealing element are/is used for sealing a gap between a heating cigarette smoke section and the cigarette end sealing cylinder; The cross-sectional area of the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal gradually decreases from the top to the bottom of the cigarette end seal cartridge. Preferably, the cross-sectional circumference of the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal is constant or the circumference is reduced by no more than 5%. Preferably, the cross-section of the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal is eventually changed from an initial circular shape to a rectangular, oval or racetrack shape from the top to the bottom of the cigarette end seal cartridge. Preferably, the number of the middle annular cigarette seals is single or multiple; The plurality of middle annular cigarette sealing elements are arranged at intervals along the axial direction of the cigarette end sealing cylinder. Preferably, the ratio of the area of the round shape to the area of the inner cavity of the cigarette end sealing cylinder is 85% -98%. Preferably, the height of the bottom annular sealing element is 0.1-0.8 times of the height of the cigarette end sealing cylinder; The ratio of the