CN-122004536-A - Heating smoking set

CN122004536ACN 122004536 ACN122004536 ACN 122004536ACN-122004536-A

Abstract

The application belongs to the technical field of heating cigarettes, and particularly relates to a heating smoking set. The cigarette heating tool comprises a cigarette accommodating cavity and a radiation heat source positioned below the cigarette accommodating cavity, wherein a bottom annular cigarette sealing piece is arranged at the bottom of the cigarette accommodating cavity, or a middle annular cigarette sealing piece is arranged between the bottom of the cigarette accommodating cavity and the top of the cigarette accommodating cavity. The annular sealing piece has the advantages that the use efficiency of the aerosol generating substrate is remarkably improved by improving the sealing device of the combination part of the smoking set and the cigarette, the shape of the aerosol substrate of the cigarette is changed by the sealing structure of the smoking set under the condition of not changing the manufacturing process of the cigarette, the density of tobacco shreds is increased, the light transmittance is reduced, the heat radiation energy conversion is carried out more fully, the heat conduction rate of the aerosol generating substrate is improved, the heating speed is increased, and the concentration of the aerosol and the suction stability of mouth by mouth are improved.

Inventors

LI BIN
ZHANG ZHAN
FU LILI
LI HAIJIE
NIU YAPENG
ZHANG YUE
QI WEI
ZHANG QI

Assignees

中国烟草总公司郑州烟草研究院
河南中烟工业有限责任公司

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (10)

1. The heating cigarette smoking set is characterized by comprising a cigarette accommodating cavity and a radiation heat source positioned below the cigarette accommodating cavity; the cigarette holding cavity bottom is provided with a bottom annular cigarette sealing member, or the cigarette holding cavity bottom is provided with a middle annular cigarette sealing member between the cigarette holding cavity top and the cigarette holding cavity bottom, the bottom annular cigarette sealing member and the middle annular cigarette sealing member are configured to seal a gap between the heating cigarette smoking section and the cigarette holding cavity.
2. The heated cigarette smoking article of claim 1, wherein said heated cigarette smoking article comprises a light reflecting layer positioned about the periphery of said cigarette receiving chamber.
3. The heated cigarette smoking article of claim 1, wherein the hollow portion of said bottom annular cigarette seal or said middle annular cigarette seal tapers in cross-sectional area from downstream to upstream.
4. A heated cigarette smoking article according to claim 3, wherein the cross-sectional perimeter of the hollow portion of said bottom annular cigarette seal or middle annular cigarette seal remains unchanged or the perimeter reduction is no more than 5% from downstream to upstream.
5. A heated cigarette smoking article according to claim 3, wherein the cross-section of the hollow portion of said bottom annular cigarette seal or said middle annular cigarette seal changes from an initial circular shape to a rectangular, oval, racetrack or smaller circular shape from downstream to upstream.
6. The heated cigarette smoking article of claim 5, wherein the ratio of the initial circular area to the area of the cigarette receiving cavity is 85% -98%.
7. The heated cigarette smoking article of claim 1, wherein said bottom annular cigarette seal inner wall is sloped.
8. The heated cigarette smoking article of claim 1, wherein said bottom annular cigarette seal height is less than 0.5 times said cigarette receiving cavity height.
9. The heated cigarette smoking article of claim 6, wherein the ratio of the distance between the downstream end face of the downstream-most intermediate annular cigarette seal and the bottom of the cigarette receiving cavity to the height of the cigarette receiving cavity is 0.5-1 times.
10. The heated cigarette smoking article of claim 1, wherein said bottom annular cigarette seal downstream end face is connected to said cigarette receiving cavity downstream end face by a ramp; The downstream end face of the most downstream middle annular cigarette sealing piece is connected with the downstream end face of the cigarette accommodating cavity through a slope.

Description

Heating smoking set Technical Field The invention belongs to the technical field of heating cigarettes, and particularly relates to a heating smoking set. Background Traditional cigarettes and electronic cigarettes, heated cigarettes, buccal cigarettes, nicotine pouches, and other tobacco products all have nicotine delivery as a primary consumer feature. And novel tobacco products such as electronic cigarettes, heating cigarettes, nicotine bags and the like have little harm to consumers, and can effectively transfer nicotine, so that the tobacco products are more and more favored by consumers. The new tobacco products have recently shown a rapid growth trend in the international tobacco consumer market, and are also important points of attention of various large tobacco manufacturers. The heated cigarettes are expected to become the main tobacco consumer products due to their rapid development in the international market as they have similar smoke characteristics to traditional combustion type cigarettes. Innovations for heating cigarettes are mainly in the fields of heating cigarette structures, heating modes, tight combination with cigarettes, promotion of aerosol generation in tobacco products, efficient delivery to consumers and the like. In terms of cigarette structure, the mature heating cigarette is still generally mainly a cylinder with the length of 40 mm-80 mm and the circumference of 17 mm-24 mm as main characteristics, and generally comprises an aerosol generating substrate section, a cooling section, a filter tip section and the like in the axial direction. The heat supply direction mainly comprises circumferential and central heating, bottom heating or hot air flow heating. Circumferential heating refers to the placement of heaters around the aerosol-generating substrate segments. The central heating is typically arranged at a location inside the aerosol-generating substrate or in use a heating body is inserted to heat the aerosol-generating substrate. The design of the air flow channel in the sucking process can be divided into the air flow channel arranged on the matched smoking set or the air flow channel naturally formed by the matching clearance between the cigarette and the smoking set. The air flow is introduced into the air flow channel and then passes through the aerosol generating substrate, so that aerosol formed by heating the aerosol generating substrate is carried out, and the aerosol is transmitted through the cooling section and/or the filter section. The other type of heating cigarette (chinese patent 202010241676.5, 201911021676.8, 201911021823, etc. filed by the applicant of the present application) generally comprises an aerosol-generating substrate section, a hollow-structure smoke mixing section and a filter section, specifically, an upstream end face of the aerosol-generating substrate is sealed, and the sealing manner may be that the upstream end face of the aerosol-generating substrate is sealed by a matched smoking set, or that a rod or a gas barrier film with a sealing function is 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. The current first heated cigarette with an open upstream aerosol-generating substrate and the second technical product with a closed aerosol-generating substrate always face the problems of insufficient aerosol generation, low conversion of the effective substances of the aerosol-generating substrate and long heating waiting time in use. Typical products require a waiting time of about 15 seconds or more. The central heating mode is limited by the aerosol-generating substrate due to the heat transfer process, which results in lower aerosol-generating and transfer efficiency of the aerosol-generating substrate and a higher temperature to the heater. The packaging material used for the aerosol-generating substrate is heated in the circumferential heating mode, so that other substances are more likely to be generated and mixed in the aerosol, and unnecessary miscellaneous gas is brought. Of course, partial reduction of