CN-122004511-A - Aerosol generating system and method for improving nicotine release amount and release rate

CN122004511ACN 122004511 ACN122004511 ACN 122004511ACN-122004511-A

Abstract

The invention belongs to the technical field of heating cigarettes, and particularly relates to an aerosol generating system and a method for improving nicotine release amount and release rate. The aerosol-generating system comprises an aerosol-generating article and a heating cigarette smoking set, wherein the aerosol-generating article comprises an aerosol-generating substrate section with an upstream end face and a downstream end face, the aerosol-generating substrate section is provided with a tortuous hole penetrating from the upstream end face to the downstream end face, the aerosol-generating substrate section is cylindrical, the ratio of the distance between the upstream end face and the downstream end face of the aerosol-generating substrate section to the diameter is smaller than 1.2, the heating cigarette smoking set comprises a cigarette accommodating cavity and a radiation heat source located below the cigarette accommodating cavity, a bottom annular cigarette sealing piece is arranged at the bottom of the cigarette accommodating cavity, and/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.

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. An aerosol-generating system, comprising an aerosol-generating article and a heated cigarette smoking article; the aerosol-generating article comprises an aerosol-generating substrate segment having an upstream end face and a downstream end face; The aerosol-generating substrate segment having a tortuous aperture extending therethrough from the upstream end face to the downstream end face; the aerosol generating substrate section is cylindrical, the ratio of the distance between the upstream end face and the downstream end face of the aerosol generating substrate section to the diameter is smaller than 1.2, or the aerosol generating substrate section is cuboid, and the ratio of the distance between the upstream end face and the downstream end face of the aerosol generating substrate section to the hydraulic diameter of the end face is smaller than 1.2; the heating cigarette smoking set comprises a cigarette accommodating cavity and a radiation heat source positioned below the cigarette accommodating cavity; the bottom of the cigarette accommodating cavity is provided with a bottom annular cigarette sealing piece, and/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; Inserting an aerosol-generating substrate segment of the aerosol-generating article into a cigarette receiving cavity of the heated cigarette smoking article; The bottom annular cigarette seal or middle annular cigarette seal is configured to seal a gap between a heated cigarette smoke segment and the cigarette receiving cavity.
2. An aerosol-generating system according to claim 1, wherein the visible light transmittance between the upstream end face and the downstream end face in the aerosol-generating substrate segment is 5% -40%.
3. An aerosol-generating system according to claim 1, wherein the aerosol-generating article further comprises a heat shielding section downstream of the aerosol-generating substrate section; the heat shielding section is configured such that a projection of light rays transmitted from the downstream end face in a downstream axial direction falls on the heat shielding section. The heat shielding section is a fiber strand section or a light barrier and is provided with an axial through hole or a non-axial through hole; When the heat shielding section has an axial through hole, the heat shielding section is configured such that a projection of light transmitted from the downstream end face in a downstream axial direction falls at a non-axial through hole position of the heat shielding section.
4. An aerosol-generating system according to claim 1, wherein the aerosol-generating article further comprises a smoke mixing section having a hollow structure therein; the flue gas mixing section is located between the aerosol-generating substrate section and the heat shielding section, or the flue gas mixing section is located downstream of the heat shielding section.
5. An aerosol-generating system according to claim 4, wherein the aerosol-generating article comprises a light-reflective layer wrapped around the periphery of the aerosol-generating substrate segment.
6. An aerosol-generating system according to claim 1, wherein the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal tapers in cross-sectional area from downstream to upstream.
7. An aerosol-generating system according to claim 6 wherein the cross-sectional circumference of the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal remains the same from downstream to upstream and is equal to the cross-sectional circumference of the heated cigarette smoking segment; Or from downstream to upstream, the cross-sectional circumference of the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal decreases by no more than 5%, and the cross-sectional circumference of the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal furthest downstream is equal to the cross-sectional circumference of the heated cigarette smoke section.
8. An aerosol-generating system according to claim 6, wherein the cross-section of the hollow portion of the bottom annular cigarette seal or the middle annular cigarette seal, from downstream to upstream, eventually changes from an initial circular shape to a rectangular, oval, racetrack-like or smaller circular shape; the inner wall of the bottom annular cigarette sealing piece is slope-shaped; The downstream end face of the bottom annular cigarette sealing piece is connected with the downstream end face of the cigarette accommodating cavity through a slope; 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.
9. The aerosol-generating system of claim 1, wherein the heated cigarette smoking article comprises a light reflecting layer positioned about the periphery of the cigarette receiving cavity; the radiation heat source is in interval or direct contact with the upstream end face of the heating cigarette.
10. A method of increasing the release amount and release rate of nicotine, characterized in that an aerosol-generating system according to any of claims 1-9 is used.

Description

Aerosol generating system and method for improving nicotine release amount and release rate Technical Field The invention belongs to the technical field of heating cigarettes, and particularly relates to an aerosol generating system and a method for improving nicotine release amount and release rate. 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