WO2021073425A1 - Airtight heating tobacco rod - Google Patents

Airtight heating tobacco rod Download PDF

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Publication number
WO2021073425A1
WO2021073425A1 PCT/CN2020/118760 CN2020118760W WO2021073425A1 WO 2021073425 A1 WO2021073425 A1 WO 2021073425A1 CN 2020118760 W CN2020118760 W CN 2020118760W WO 2021073425 A1 WO2021073425 A1 WO 2021073425A1
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WO
WIPO (PCT)
Prior art keywords
tobacco
section
side wall
hole
cigarette
Prior art date
Application number
PCT/CN2020/118760
Other languages
French (fr)
Chinese (zh)
Inventor
李斌
韩敬美
张柯
吴俊�
王爽
吕茜
王兵
雷萍
付丽丽
李志强
黄锋
廖思尧
王乐
龚为民
汤建国
Original Assignee
云南中烟工业有限责任公司
中国烟草总公司郑州烟草研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202010382903.6A external-priority patent/CN113615869A/en
Priority claimed from CN202010382902.1A external-priority patent/CN113615868A/en
Priority claimed from CN202010422761.1A external-priority patent/CN111567863A/en
Priority claimed from CN202010422579.6A external-priority patent/CN111588079A/en
Priority claimed from CN202010422575.8A external-priority patent/CN111567862A/en
Application filed by 云南中烟工业有限责任公司, 中国烟草总公司郑州烟草研究院 filed Critical 云南中烟工业有限责任公司
Priority to JP2022513908A priority Critical patent/JP7266148B2/en
Publication of WO2021073425A1 publication Critical patent/WO2021073425A1/en

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices

Definitions

  • the invention belongs to the field of heating non-burning cigarettes, and particularly relates to a closed heating type cigarette.
  • the present invention provides a closed heating cigarette.
  • the cigarette includes, from upstream to downstream, a tobacco section 1, a low suction resistance section 2, and a functional filter section 3 which are in turn coaxially abutted and sealed at the upstream end.
  • the external package has external package 4;
  • the low suction resistance section 2 is a tube having an axial central cavity 2-1 and a circumferential side wall through hole 2-2, and the number of the side wall through hole 2-2 is at least one;
  • the upstream end sealing method of the tobacco section 1 is as follows: the circumference and/or upstream end surface of the tobacco section 1 is wrapped with a paper-based or foil-based material with air-impermeable or controllable air permeability to form a closed system; or the tobacco section 1 A plug 5 abuts coaxially at the upstream end.
  • the plug 5 and the outer wrapper 4 are made of air-impermeable or controllable air-permeability materials, such as aluminum foil.
  • the shape of the plug 5 is cylindrical, has good thermal stability, and will not be deformed due to the increase in temperature, such as polymer material blocks and metal blocks.
  • the plug 5 has a certain degree of thermal stability, and will not deform significantly when the temperature is below 400 degrees Celsius.
  • the axial center of the tobacco section 1 has an axial first smoke passage 1 -1.
  • the non-axial portion of the tobacco section 1 further includes a plurality of axial second smoke passages 1-2.
  • the first flue gas channel 1-1 and the second flue gas channel 1-2 axially penetrate the tobacco section 1, that is, the tobacco section 1 has a honeycomb structure.
  • the functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2.
  • the tobacco section 1 includes shredded tobacco, tobacco flakes, tobacco particles, tobacco shaped bodies or tobacco-containing gels.
  • a coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 3-2 aperture.
  • the low suction resistance section 2 may be an empty tube.
  • the low suction resistance section 2 further includes a barrier layer 2-3 with a certain air permeability provided on the circumferential side wall of the central cavity 2-1. More preferably, there is a hollow tubular support layer between the tube wall of the low suction resistance section 2 and the barrier layer 2-3, and the side wall through hole 2-2 penetrates the support layer.
  • the barrier layer 2-3 completely covers the circumferential sidewall of the central cavity 2-1 and the sidewall through hole 2-2. More preferably, the barrier layer 2-3 is a paper-based or acetate fiber molded material with a certain air permeability/porosity.
  • the low suction resistance section 2 further includes a restricting flow guiding element 2-4 provided in the central cavity 2-1 with an axial passage.
  • the draw resistance of the low draw resistance section 2 is controllable, so it can be called a controllable draw resistance section.
  • the restricting and guiding element 2-4 is a columnar body with a certain degree of air permeability, which completely fills or partially fills the central cavity 2-1.
  • the side wall of the restricting flow guiding element 2-4 covers the side wall through hole 2-2.
  • the restricting flow guiding element 2-4 has a plurality of axial channels inside, and the air permeability of the side wall of the outer axial channel is less than the air permeability of the central axial channel.
  • the several axial passages include: a central axial passage arranged at the center of the cigarette and an outer axial passage arranged outside the central axial passage.
  • the restricting flow guiding element 2-4 includes an outermost hollow cylindrical restricting layer and several hollow cylindrical guiding layers inside, and the air permeability of the restricting layer is less than the air permeability of the air guiding layer.
  • the present invention designs a closed cigarette for the first time, which is matched with a heating type smoking appliance.
  • the closed cigarette tobacco section 1 is closed at one end contacting the cigarette accommodating cavity, because the formed fresh smoke has a negative impact on the internal atmosphere of the cigarette. With the displacement effect, the oxygen content in the cigarette will decrease with the heating process. At this time, even if the heating temperature is increased, combustion will not occur. Therefore, the heating temperature can be increased to fully release the tobacco aroma components and increase the amount of smoke.
  • the closed cigarette of the present invention is designed with a low suction resistance section 2 with an axial central cavity 2-1 and a circumferential side wall through hole 2-2.
  • the outside air flows from the side wall through hole 2- 2 Enter, and mix with the smoke produced by heating the tobacco section 1 in the cavity to form mainstream smoke for people to inhale.
  • outside air enters through the side wall through holes 2-2 during the suction process, and the low suction resistance section 2 has a higher air flow rate and a lower pressure, which has the effect of extracting smoke from the tobacco section 1.
  • the outside air also has a cooling effect on the smoke.
  • the cigarette of the present invention uses a plug 5 to seal the tobacco section 1.
  • the plug 5 can be rolled together with the tobacco section 1, which is convenient for industrial production. If components such as a sealing film are used to seal the tobacco section separately, the cigarette production process has to be changed, and the existing equipment is greatly modified, which is not convenient for industrial production.
  • the cigarette is designed with several axial channels in the tobacco section 1 for the first time, which is conducive to the diffusion of smoke in the enclosed tobacco section 1.
  • the cigarette of the present invention is provided with a barrier layer 2-3 covering the circumferential side wall of the central cavity 2-1 and the side wall through hole 2-2 in the low-draw resistance section 2. It has a certain degree of air permeability and does not affect the inflow of outside air when inhaling; when not inhaling, the smoke will not escape through the side wall through holes 2-2, so it can effectively reduce the loss of smoke.
  • the cigarette of the present invention is provided with a restricting flow guiding element 2-4 having an axial smoke diffusion channel in the low suction resistance section 2.
  • the restricting flow guide element 2-4 has a certain degree of air permeability, the axial smoke diffusion resistance is low, and the radial smoke diffusion resistance is high. When pumping, it does not affect the inflow of outside air; when not pumping, due to the high radial smoke diffusion resistance, the smoke will not escape through the side wall through holes 2-2, so the loss of smoke can be effectively reduced.
  • the suction resistance of the cigarette can be adjusted by changing the pore size and number of the through holes 2-2 in the circumferential side wall and the porosity of the restricting flow guiding element 2-4.
  • Figure 1 is a longitudinal cross-sectional view of a closed heating type cigarette in Example 1.
  • Example 2 is a longitudinal cross-sectional view of a closed heating type cigarette in Example 2.
  • Fig. 3 is a longitudinal sectional view of a closed heating type cigarette in Example 3.
  • Example 4 is a schematic longitudinal cross-sectional view of a closed heating type cigarette in Example 4.
  • Figure 5 is a schematic longitudinal cross-sectional view of a closed heating cigarette in Example 5.
  • Tobacco section 1-1, the first flue gas channel, 1-2, the second flue gas channel, 2, the low suction resistance section, 2-1, the central cavity, 2-2, the side wall through hole, 2 -3.
  • a closed-heated cigarette from upstream to downstream, the cigarette includes a tobacco section 1, a low suction resistance section 2, and a functional filter section 3 that are in turn coaxially abutted and sealed at the upstream end.
  • the cigarette is wrapped with an external wrapper 4.
  • the outer wrapper 4 includes cigarette paper and tipping paper, which together wrap the cigarettes as a whole.
  • the low suction resistance section 2 is a hollow paper tube having an axial central cavity 2-1 and a circumferential side wall through hole 2-2, and the number of the side wall through hole 2-2 is two.
  • the upstream end sealing method of the tobacco section 1 is as follows: the circumference and the upstream end surface of the tobacco section 1 are wrapped by airtight aluminum foil to form a closed system.
  • a coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 3-2 ⁇ The aperture.
  • the functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2 that are coaxially abutted in sequence.
  • the tobacco section 1 includes shredded tobacco.
  • the closed cigarette of this embodiment 1 is matched with a heating type smoking set. Since the formed fresh smoke has a displacement effect on the internal atmosphere of the cigarette, the oxygen content in the cigarette will decrease with the heating process. At this time, Even if the heating temperature is increased, combustion will not occur. Therefore, the heating temperature can be increased to fully release the tobacco aroma components and increase the amount of smoke.
  • the closed cigarette tobacco section 1 of the first embodiment is sealed at the upstream end of the cigarette accommodating cavity in contact with the smoking article, so that tobacco residues will not fall and contaminate the smoking article.
  • the closed cigarette of this embodiment 1 is designed with a low suction resistance section 2 having an axial center cavity 2-1 and a circumferential side wall through hole 2-2.
  • the outside air flows from the side wall through hole 2- 2 Enter, and mix with the smoke produced by heating the tobacco section 1 in the cavity to form mainstream smoke for people to inhale.
  • outside air enters through the side wall through holes 2-2 during the suction process, and the low suction resistance section 2 has a higher air flow rate and a lower pressure, which has the effect of extracting smoke from the tobacco section 1.
  • the outside air also has a cooling effect on the smoke.
  • a closed-heated cigarette the cigarette includes a plug 5, a tobacco section 1, a low-resistance section 2, and a functional filter section 3 which are in turn coaxially abutting from upstream to downstream.
  • the cigarette is wrapped with an external wrapper 4.
  • the outer wrapper 4 includes cigarette paper and tipping paper, which together wrap the cigarettes as a whole.
  • the low suction resistance section 2 is a hollow paper tube with an axial central cavity 2-1 and a circumferential side wall through hole 2-2, and the number of the side wall through hole 2-2 is two.
  • a coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 3-2 ⁇ The aperture.
  • the functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2.
  • the tobacco section 1 includes tobacco particles.
  • the shape of the plug 5 is cylindrical, the material is aluminum foil, and the thickness is about 3 mm. It has good thermal stability and will not be significantly deformed due to temperature rise.
  • the plug 5 and the tobacco section 1 coaxially abutting on the cigarettes from upstream to downstream form a sealed tobacco section at the upstream end.
  • Example 2 Compared with Example 1, the cigarette of Example 2 uses the plug 5 to seal the tobacco section.
  • the plug 5 can be rolled together with the tobacco section 1, which is convenient for industrial production. If components such as a sealing film are used to seal the tobacco section separately, the cigarette production process has to be changed, and the existing equipment is greatly modified, which is inconvenient for industrial production.
  • a closed-heated cigarette the cigarette includes a plug 5, a tobacco section 1, a low-resistance section 2, and a functional filter section 3 that are in turn coaxially abutting from upstream to downstream.
  • the cigarette is wrapped with an external wrapper 4.
  • the outer wrapper 4 includes cigarette paper and tipping paper, which together wrap the cigarettes as a whole.
  • the low suction resistance section 2 is a hollow paper tube with an axial central cavity 2-1 and a circumferential side wall through hole 2-2, and the number of the side wall through hole 2-2 is 2;
  • the tobacco section 1 has an axial first flue gas channel 1-1 at its axis.
  • the non-axial portion of the tobacco section 1 also includes 6 axial second smoke passages 1-2.
  • the first flue gas channel 1-1 and the second flue gas channel 1-2 axially penetrate the tobacco section 1. That is, the tobacco section 1 has a honeycomb structure.
  • a coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 3-2 ⁇ The aperture.
  • the functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2.
  • the tobacco section 1 includes a tobacco shaped body.
  • the shape of the plug 5 is cylindrical, the material is aluminum foil, and its thickness is about 3 mm. It has good thermal stability and will not be significantly deformed due to temperature rise.
  • a number of axial channels are designed in the tobacco section 1 for the first time, which is beneficial to the diffusion of smoke in the closed tobacco section 1.
  • a closed heating cigarette the cigarette includes, from upstream to downstream, a tobacco section 1, a low suction resistance section 2, and a functional filter section 3 which are in turn coaxially abutted and sealed at the upstream end.
  • the cigarette is wrapped with an external wrapper 4.
  • the outer wrapper 4 includes cigarette paper and tipping paper, which together wrap the cigarettes as a whole.
  • the low suction resistance section 2 is a tube body with an axial central cavity 2-1 and a circumferential side wall through hole 2-2, and the number of the side wall through hole 2-2 is two;
  • the low suction resistance section 2 also includes a barrier layer 2-3 with a certain air permeability provided on the circumferential side wall of the central cavity 2-1.
  • the barrier layer 2-3 is a paper-based or acetate fiber molded material with a certain degree of air permeability.
  • the barrier layer 2-3 completely covers the circumferential sidewall of the central cavity 2-1 and the sidewall through hole 2-2.
  • the sealing method of the upstream end of the sealed tobacco section 1 is as follows: the upstream end of the sealed tobacco section 1 abuts against a plug 5 coaxially.
  • a coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 2-2 ⁇ The aperture.
  • the functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2.
  • the tobacco section 1 includes a tobacco-containing gel.
  • the cigarette of this embodiment 4 is provided with a barrier layer 2-3 covering the circumferential side wall of the central cavity 2-1 and the side wall through hole 2-2 in the low suction resistance section 2.
  • the barrier layer 2-3 has a certain degree of air permeability. When it is sucked, it does not affect the inflow of outside air; when it is not sucked, the smoke will not escape through the side wall through holes 2-2, so it can effectively reduce the loss of smoke. .
  • the cigarette includes, from upstream to downstream, a tobacco section 1, a low suction resistance section 2, and a functional filter section 3 which are in turn coaxially abutted and sealed at the upstream end.
  • the cigarette is wrapped with an external wrapper 4.
  • the low suction resistance section 2 is a pipe body with an axial central cavity 2-1 and a circumferential side wall through hole 2-2, the number of the side wall through hole 2-2 is two, and the diameter is 1.5mm;
  • the low suction resistance section 2 also includes a restricting flow guiding element 2-4 with a number of axial channels arranged in the central cavity 2-1, and the porosity of the restricting flow guiding element 2-4 is 40 %.
  • the restricting and guiding element 2-4 is a paper-based material with a certain degree of air permeability.
  • the restricting flow guiding element 2-4 completely covers the circumferential side wall of the central cavity 2-1 and the side wall through hole 2-2, and completely fills the central cavity 2-1.
  • the sealing method of the upstream end of the sealed tobacco section 1 is as follows: the upstream end of the sealed tobacco section 1 abuts against a plug 5 coaxially.
  • the plug 5 is made of airtight material and has certain thermal stability, and will not undergo significant deformation at 400°C, such as silica gel blocks and metal blocks.
  • a coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 2-2 ⁇ The aperture.
  • the restricting flow guiding element 2-4 includes an outermost hollow cylindrical restricting layer and a plurality of hollow cylindrical guiding layers inside, and the air permeability of the restricting layer is less than the air permeability of the air guiding layer.
  • the functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2.
  • the tobacco section 1 includes a tobacco-containing gel.
  • the cigarette of Example 5 is provided with a restricting flow guide element 2-4 having an axial smoke diffusion channel in the low suction resistance section 2.
  • the restricting flow guiding element 2-4 has a certain degree of air permeability, the axial smoke diffusion resistance is low, and the radial smoke diffusion resistance is high. When pumping, it does not affect the inflow of outside air; when not pumping, due to the high radial smoke diffusion resistance, the smoke will not escape through the side wall through holes 2-2, so the loss of smoke can be effectively reduced.
  • the suction resistance of the cigarette can be adjusted by changing the pore size and number of the through holes 2-2 in the circumferential side wall and the porosity of the restricting flow guiding element 2-4.

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

An airtight heating tobacco rod, the tobacco rod comprising, sequentially coaxially abutting from upstream to downstream, an upstream end sealed tobacco segment (1), a low draw resistance segment (2), and a functional filter segment (3), and an external wrapping part (4) is wrapped on the outside of the tobacco rod. The low draw resistance segment (2) is a pipe body provided with an axial central cavity (2-1) and a circumferential side wall through hole (2-2). The upstream end sealing mode of the tobacco segment (1) is: the circumference and/or the upstream end of the tobacco segment (1) being wrapped in an air impermeable or controllably permeable paper base or foil base material to form a closed system; or, a plug (5) coaxially abutting the upstream end of the tobacco segment (1). Oxygen content in the airtight tobacco rod falls as a heating process progresses, such that even when the temperature is elevated, burning will not occur. Therefore, the heating temperature can be raised in order to fully release tobacco aroma components, increasing the amount of tobacco vapor.

Description

一种密闭加热式烟支Airtight heating type cigarette 技术领域Technical field
本发明属于加热不燃烧卷烟领域，特别涉及一种密闭加热式烟支。The invention belongs to the field of heating non-burning cigarettes, and particularly relates to a closed heating type cigarette.
背景技术Background technique
传统烟草已经有几百年的历史，已经融入到大多数烟民的生活之中。近年来随着人民生活水平的提高，吸烟与健康、二手烟危害等问题越来越被人们重视，传统烟草制品所带来的危害性日渐突出。与此同时，随着WHO《烟草控制框架公约》的实施，特别是世界各国公共场所吸烟禁令范围的逐步扩大，烟草制品的发展环境发生了重大而深刻的变化，烟草制品结构正朝着多样化和无烟化的发展方向加快调整。新型烟草制品逐渐成为各大跨国烟草企业应对传统烟草制品销量日趋下滑的现实选择。Traditional tobacco has a history of hundreds of years and has been integrated into the lives of most smokers. In recent years, with the improvement of people's living standards, people have paid more and more attention to the problems of smoking and health, and the harm of second-hand smoke. The harm caused by traditional tobacco products has become increasingly prominent. At the same time, with the implementation of the WHO Framework Convention on Tobacco Control, especially the gradual expansion of smoking bans in public places around the world, the development environment of tobacco products has undergone major and profound changes, and the structure of tobacco products is moving towards diversification. And the development direction of smoke-free is speeding up adjustment. New tobacco products have gradually become a realistic choice for major multinational tobacco companies to cope with the declining sales of traditional tobacco products.
目前绝大多数的加热不燃烧型卷烟均采用空气作为烟气的载体，为了保证烟草不燃烧，所施加的加热温度通常较低，一般不超过300℃，与传统卷烟相比，新型加热不燃烧卷烟的烟草致香成分难以完全释放，烟气量不足，因此这类香烟较难以被传统烟民接受。此外，为了保证空气流通，绝大多数的加热不燃烧卷烟的烟草端均为敞开式结构，即烟丝或再造烟片直接裸露在外，或是经过一定的气流通道与外界大气相连，在吸食完毕拔出烟弹的过程中，烟草残渣会存在掉落现象，易对烟具造成污染，因此该类型烟草在使用一段时间后均需要花时间来清洗烟具。At present, most heat-not-burn cigarettes use air as the carrier of smoke. In order to ensure that the tobacco does not burn, the heating temperature applied is usually lower, generally not exceeding 300°C. Compared with traditional cigarettes, the new type of heat-not-burn The tobacco aroma components of cigarettes are difficult to completely release, and the amount of smoke is insufficient. Therefore, such cigarettes are more difficult to be accepted by traditional smokers. In addition, in order to ensure air circulation, the tobacco end of most heat-not-burn cigarettes has an open structure, that is, shredded tobacco or reconstituted cigarettes are directly exposed or connected to the outside atmosphere through a certain airflow channel. In the process of discharging the smoke bomb, the tobacco residue will fall off, which is easy to cause pollution to the smoking set. Therefore, this type of tobacco needs time to clean the smoking set after using it for a period of time.
为了解决上述问题，提出本发明。In order to solve the above problems, the present invention is proposed.
发明内容Summary of the invention
本发明提供一种密闭加热式烟支，所述烟支从上游到下游包括依次同轴抵接的上游端密封的烟草段1、低吸阻段2、和功能滤嘴段3，所述烟支外部包裹有外部包裹件4；The present invention provides a closed heating cigarette. The cigarette includes, from upstream to downstream, a tobacco section 1, a low suction resistance section 2, and a functional filter section 3 which are in turn coaxially abutted and sealed at the upstream end. The external package has external package 4;
其中，所述低吸阻段2为具有轴向中心空腔2-1和周向侧壁通孔2-2的管体，所述侧壁通孔2-2的数量至少为一个；Wherein, the low suction resistance section 2 is a tube having an axial central cavity 2-1 and a circumferential side wall through hole 2-2, and the number of the side wall through hole 2-2 is at least one;
所述烟草段1的上游端密封方式为：所述烟草段1圆周和/或上游端面由不 透气或可控透气度的纸基或箔基材料包裹构成密闭体系；或者所述烟草段1的上游端同轴抵接有堵头5。所述堵头5和外部包裹件4均为不透气或可控透气度材质，例如铝箔。The upstream end sealing method of the tobacco section 1 is as follows: the circumference and/or upstream end surface of the tobacco section 1 is wrapped with a paper-based or foil-based material with air-impermeable or controllable air permeability to form a closed system; or the tobacco section 1 A plug 5 abuts coaxially at the upstream end. The plug 5 and the outer wrapper 4 are made of air-impermeable or controllable air-permeability materials, such as aluminum foil.
优选地，所述堵头5的形状为圆柱状，具有良好的热稳定性，不会因为温度升高而发生形变，例如高分子材料块、金属块。Preferably, the shape of the plug 5 is cylindrical, has good thermal stability, and will not be deformed due to the increase in temperature, such as polymer material blocks and metal blocks.
优选地，所述堵头5具有一定的热稳定性，在温度400摄氏度以下，不会发生显著形变。Preferably, the plug 5 has a certain degree of thermal stability, and will not deform significantly when the temperature is below 400 degrees Celsius.
优选地，当所述烟草段1的上游端密封方式为所述烟草段1的上游端同轴抵接有堵头5时，所述烟草段1轴心处具有轴向第一烟气通道1-1。Preferably, when the upstream end of the tobacco section 1 is sealed in such a way that the upstream end of the tobacco section 1 abuts against the plug 5 coaxially, the axial center of the tobacco section 1 has an axial first smoke passage 1 -1.
更优选地，所述烟草段1非轴心处还包括若干条轴向第二烟气通道1-2。所述第一烟气通道1-1和第二烟气通道1-2轴向贯穿所述烟草段1，即所述烟草段1呈蜂窝煤式结构。More preferably, the non-axial portion of the tobacco section 1 further includes a plurality of axial second smoke passages 1-2. The first flue gas channel 1-1 and the second flue gas channel 1-2 axially penetrate the tobacco section 1, that is, the tobacco section 1 has a honeycomb structure.
优选地，所述功能滤嘴段3包括降温段3-1和过滤段3-2。Preferably, the functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2.
优选地，所述烟草段1内包括烟丝、烟片、烟草颗粒、烟草成形体或含烟草的凝胶体。Preferably, the tobacco section 1 includes shredded tobacco, tobacco flakes, tobacco particles, tobacco shaped bodies or tobacco-containing gels.
优选地，所述外部包裹件4上与所述侧壁通孔2-2相应位置设置同轴通孔4-1，所述同轴通孔4-1的孔径不小于所述侧壁通孔3-2的孔径。优选地，所述低吸阻段2可为空管。优选地，所述低吸阻段2还包括设置在所述中心空腔2-1周向侧壁的具有一定透气度的阻挡层2-3。更优选地，所述低吸阻段2管壁和所述阻挡层2-3之间具有空心管状的支撑层，所述侧壁通孔2-2贯穿所述支撑层。Preferably, a coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 3-2 aperture. Preferably, the low suction resistance section 2 may be an empty tube. Preferably, the low suction resistance section 2 further includes a barrier layer 2-3 with a certain air permeability provided on the circumferential side wall of the central cavity 2-1. More preferably, there is a hollow tubular support layer between the tube wall of the low suction resistance section 2 and the barrier layer 2-3, and the side wall through hole 2-2 penetrates the support layer.
更优选地，所述阻挡层2-3完全覆盖所述中心空腔2-1周向侧壁和所述侧壁通孔2-2。更优选地，所述阻挡层2-3为具有一定透气度/孔隙率的纸基或醋酸纤维成形材料。More preferably, the barrier layer 2-3 completely covers the circumferential sidewall of the central cavity 2-1 and the sidewall through hole 2-2. More preferably, the barrier layer 2-3 is a paper-based or acetate fiber molded material with a certain air permeability/porosity.
优选地，所述低吸阻段2还包括设置在所述中心空腔2-1内具有轴向通道的限制导流元件2-4。低吸阻段2的吸阻可控，因此可叫做可控吸阻段。Preferably, the low suction resistance section 2 further includes a restricting flow guiding element 2-4 provided in the central cavity 2-1 with an axial passage. The draw resistance of the low draw resistance section 2 is controllable, so it can be called a controllable draw resistance section.
更优选地，所述低吸阻段2管壁和所述限制导流元件2-4之间具有空心管状的支撑层，所述侧壁通孔2-2贯穿所述支撑层。More preferably, there is a hollow tubular support layer between the tube wall of the low suction resistance section 2 and the restricting and guiding element 2-4, and the side wall through hole 2-2 penetrates the support layer.
更优选地，所述限制导流元件2-4为柱状体，具有一定的透气度，完全填充或者部分填充所述中心空腔2-1。More preferably, the restricting and guiding element 2-4 is a columnar body with a certain degree of air permeability, which completely fills or partially fills the central cavity 2-1.
更优选地，所述限制导流元件2-4的侧壁覆盖所述侧壁通孔2-2。More preferably, the side wall of the restricting flow guiding element 2-4 covers the side wall through hole 2-2.
更优选地，所述限制导流元件2-4内部具有若干个轴向通道，外部轴向通道侧壁的透气度小于中心轴向通道的透气度。若干个轴向通道包括：设置在烟支中心的中心轴向通道和设置在中心轴向通道外部的外部轴向通道。More preferably, the restricting flow guiding element 2-4 has a plurality of axial channels inside, and the air permeability of the side wall of the outer axial channel is less than the air permeability of the central axial channel. The several axial passages include: a central axial passage arranged at the center of the cigarette and an outer axial passage arranged outside the central axial passage.
更优选地，所述限制导流元件2-4包括最外层的中空柱状限制层和内部的若干个中空柱状导流层，所述限制层的透气度小于所述导流层的透气度。More preferably, the restricting flow guiding element 2-4 includes an outermost hollow cylindrical restricting layer and several hollow cylindrical guiding layers inside, and the air permeability of the restricting layer is less than the air permeability of the air guiding layer.
上述技术方案在不矛盾的前提下，可自由组合。The above technical solutions can be freely combined without contradiction.
本发明具有以下有益效果：The present invention has the following beneficial effects:
1、本发明首次设计了一种密闭式烟支，其匹配加热型烟具使用，密闭式烟支烟草段1接触烟支容纳腔的一端封闭，由于形成的新鲜烟气的对烟支内部气氛有置换作用，烟支内的氧气含量会随着加热过程而降低，此时，即使升高加热温度，亦不会发生燃烧现象。因此，可以提高加热温度，以充分释放烟草致香成分，增大烟气量。1. The present invention designs a closed cigarette for the first time, which is matched with a heating type smoking appliance. The closed cigarette tobacco section 1 is closed at one end contacting the cigarette accommodating cavity, because the formed fresh smoke has a negative impact on the internal atmosphere of the cigarette. With the displacement effect, the oxygen content in the cigarette will decrease with the heating process. At this time, even if the heating temperature is increased, combustion will not occur. Therefore, the heating temperature can be increased to fully release the tobacco aroma components and increase the amount of smoke.
2、由于密闭式烟支烟草段1接触烟支容纳腔的一端封闭，不会出现烟草残渣掉落而污染烟具的情况。2. Since the end of the closed cigarette tobacco section 1 contacting the cigarette accommodating cavity is closed, the tobacco residue will not fall and contaminate the smoking appliance.
3、本发明的密闭式烟支设计有具有轴向中心空腔2-1和周向侧壁通孔2-2的低吸阻段2，抽吸过程中外界空气从侧壁通孔2-2进入，在空腔内与烟草段1加热产生的烟雾混合形成主流烟气供人抽吸。同时，抽吸过程中外界空气从侧壁通孔2-2进入，低吸阻段2空气流速较高，压强较低，对烟草段1的烟雾具有提取作用。此外，外界空气对烟雾同时具有降温作用。3. The closed cigarette of the present invention is designed with a low suction resistance section 2 with an axial central cavity 2-1 and a circumferential side wall through hole 2-2. During the suction process, the outside air flows from the side wall through hole 2- 2 Enter, and mix with the smoke produced by heating the tobacco section 1 in the cavity to form mainstream smoke for people to inhale. At the same time, outside air enters through the side wall through holes 2-2 during the suction process, and the low suction resistance section 2 has a higher air flow rate and a lower pressure, which has the effect of extracting smoke from the tobacco section 1. In addition, the outside air also has a cooling effect on the smoke.
4、优选的实施方案中，本发明的烟支利用堵头5密封烟草段1，烟支生产工序中，堵头5可以与烟草段1共同卷接，方便工业化生产。若使用密封膜等元件单独密封烟草段，要改变烟支生产工序，对现有设备改动较大，不方便工业化生产。4. In a preferred embodiment, the cigarette of the present invention uses a plug 5 to seal the tobacco section 1. In the cigarette production process, the plug 5 can be rolled together with the tobacco section 1, which is convenient for industrial production. If components such as a sealing film are used to seal the tobacco section separately, the cigarette production process has to be changed, and the existing equipment is greatly modified, which is not convenient for industrial production.
5、优选的实施方案中，本烟支在烟草段1内首次设计了若干条轴向通道，有利于烟雾在密闭烟草段1内的扩散。5. In a preferred embodiment, the cigarette is designed with several axial channels in the tobacco section 1 for the first time, which is conducive to the diffusion of smoke in the enclosed tobacco section 1.
6、优选的实施方案中，本发明的烟支在低吸阻段2设置了覆盖在中心空腔2-1周向侧壁和侧壁通孔2-2上的阻挡层2-3，其具有一定透气度，抽吸时，不影响外界空气的流入；不抽吸时，烟气亦不会通过侧壁通孔2-2逸出，因此可有效减小烟气流失。6. In a preferred embodiment, the cigarette of the present invention is provided with a barrier layer 2-3 covering the circumferential side wall of the central cavity 2-1 and the side wall through hole 2-2 in the low-draw resistance section 2. It has a certain degree of air permeability and does not affect the inflow of outside air when inhaling; when not inhaling, the smoke will not escape through the side wall through holes 2-2, so it can effectively reduce the loss of smoke.
7、优选的实施方案中，本发明的烟支在低吸阻段2设置了具有轴向烟气扩散通道的限制导流元件2-4。限制导流元件2-4具有一定透气度，轴向烟气扩散 阻力低，径向烟气扩散阻力高。抽吸时，不影响外界空气的流入；不抽吸时，由于径向烟气扩散阻力高，烟气亦不会通过侧壁通孔2-2逸出，因此可有效减小烟气流失。烟支的吸阻可以通过改变周向侧壁通孔2-2的孔径、数量和限制导流元件2-4的孔隙率进行调节。7. In a preferred embodiment, the cigarette of the present invention is provided with a restricting flow guiding element 2-4 having an axial smoke diffusion channel in the low suction resistance section 2. The restricting flow guide element 2-4 has a certain degree of air permeability, the axial smoke diffusion resistance is low, and the radial smoke diffusion resistance is high. When pumping, it does not affect the inflow of outside air; when not pumping, due to the high radial smoke diffusion resistance, the smoke will not escape through the side wall through holes 2-2, so the loss of smoke can be effectively reduced. The suction resistance of the cigarette can be adjusted by changing the pore size and number of the through holes 2-2 in the circumferential side wall and the porosity of the restricting flow guiding element 2-4.
附图说明Description of the drawings
图1为实施例1一种密闭加热式烟支纵向剖视图。Figure 1 is a longitudinal cross-sectional view of a closed heating type cigarette in Example 1.
图2为实施例2一种密闭加热式烟支纵向剖视图。2 is a longitudinal cross-sectional view of a closed heating type cigarette in Example 2.
图3为实施例3一种密闭加热式烟支纵向剖视图。Fig. 3 is a longitudinal sectional view of a closed heating type cigarette in Example 3.
图4为实施例4一种密闭加热式烟支纵向截面示意图。4 is a schematic longitudinal cross-sectional view of a closed heating type cigarette in Example 4.
图5为实施例5一种密闭加热式烟支纵向截面示意图。Figure 5 is a schematic longitudinal cross-sectional view of a closed heating cigarette in Example 5.
附图标记列表：List of reference signs:
1、烟草段，1-1、第一烟气通道，1-2、第二烟气通道，2、低吸阻段，2-1、中心空腔，2-2、侧壁通孔，2-3、阻挡层，2-4、限制导流元件，3、功能滤嘴段，3-1、降温段，3-2、过滤段，4、外部包裹件、4-1同轴通孔、5、堵头。1. Tobacco section, 1-1, the first flue gas channel, 1-2, the second flue gas channel, 2, the low suction resistance section, 2-1, the central cavity, 2-2, the side wall through hole, 2 -3. Barrier layer, 2-4, restricting flow guide element, 3. Functional filter section, 3-1, cooling section, 3-2, filter section, 4. External wrapping, 4-1 coaxial through hole, 5. Plug the head.
具体实施方式Detailed ways
下面通过具体实施方式进一步说明本发明的内容。The content of the present invention will be further explained below through specific embodiments.
实施例1Example 1
如图1，一种密闭加热式烟支，所述烟支从上游到下游包括依次同轴抵接的上游端密封的烟草段1、低吸阻段2、和功能滤嘴段3，所述烟支外部包裹有外部包裹件4。外部包裹件4包括卷烟纸和接装纸，两者共同将所述烟支包裹为一个整体。As shown in Figure 1, a closed-heated cigarette, from upstream to downstream, the cigarette includes a tobacco section 1, a low suction resistance section 2, and a functional filter section 3 that are in turn coaxially abutted and sealed at the upstream end. The cigarette is wrapped with an external wrapper 4. The outer wrapper 4 includes cigarette paper and tipping paper, which together wrap the cigarettes as a whole.
所述低吸阻段2为具有轴向中心空腔2-1和周向侧壁通孔2-2的空心纸管，所述侧壁通孔2-2的数量为2。The low suction resistance section 2 is a hollow paper tube having an axial central cavity 2-1 and a circumferential side wall through hole 2-2, and the number of the side wall through hole 2-2 is two.
所述烟草段1的上游端密封方式为：所述烟草段1圆周和上游端面由不透气铝箔包裹构成密闭体系。The upstream end sealing method of the tobacco section 1 is as follows: the circumference and the upstream end surface of the tobacco section 1 are wrapped by airtight aluminum foil to form a closed system.
所述外部包裹件4上与所述侧壁通孔2-2相应位置设置同轴通孔4-1，所述同轴通孔4-1的孔径不小于所述侧壁通孔3-2的孔径。A coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 3-2的孔孔。 The aperture.
所述功能滤嘴段3从上游到下游包括依次同轴抵接降温段3-1和过滤段3-2。From upstream to downstream, the functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2 that are coaxially abutted in sequence.
所述烟草段1内包括烟丝。The tobacco section 1 includes shredded tobacco.
本实施例1的密闭式烟支，其匹配加热型烟具使用，由于形成的新鲜烟气的对烟支内部气氛有置换作用，烟支内的氧气含量会随着加热过程而降低，此时，即使升高加热温度，亦不会发生燃烧现象。因此，可以提高加热温度，以充分释放烟草致香成分，增大烟气量。The closed cigarette of this embodiment 1 is matched with a heating type smoking set. Since the formed fresh smoke has a displacement effect on the internal atmosphere of the cigarette, the oxygen content in the cigarette will decrease with the heating process. At this time, Even if the heating temperature is increased, combustion will not occur. Therefore, the heating temperature can be increased to fully release the tobacco aroma components and increase the amount of smoke.
本实施例1的密闭式烟支烟草段1接触烟具的烟支容纳腔的上游端密封，不会出现烟草残渣掉落而污染烟具的情况。The closed cigarette tobacco section 1 of the first embodiment is sealed at the upstream end of the cigarette accommodating cavity in contact with the smoking article, so that tobacco residues will not fall and contaminate the smoking article.
本实施例1的密闭式烟支设计有具有轴向中心空腔2-1和周向侧壁通孔2-2的低吸阻段2，抽吸过程中外界空气从侧壁通孔2-2进入，在空腔内与烟草段1加热产生的烟雾混合形成主流烟气供人抽吸。同时，抽吸过程中外界空气从侧壁通孔2-2进入，低吸阻段2空气流速较高，压强较低，对烟草段1的烟雾具有提取作用。此外，外界空气对烟雾同时具有降温作用。The closed cigarette of this embodiment 1 is designed with a low suction resistance section 2 having an axial center cavity 2-1 and a circumferential side wall through hole 2-2. During the suction process, the outside air flows from the side wall through hole 2- 2 Enter, and mix with the smoke produced by heating the tobacco section 1 in the cavity to form mainstream smoke for people to inhale. At the same time, outside air enters through the side wall through holes 2-2 during the suction process, and the low suction resistance section 2 has a higher air flow rate and a lower pressure, which has the effect of extracting smoke from the tobacco section 1. In addition, the outside air also has a cooling effect on the smoke.
实施例2Example 2
如图2，一种密闭加热式烟支，所述烟支从上游到下游包括依次同轴抵接的堵头5、烟草段1、低吸阻段2、和功能滤嘴段3，所述烟支外部包裹有外部包裹件4。外部包裹件4包括卷烟纸和接装纸，两者共同将所述烟支包裹为一个整体。As shown in Figure 2, a closed-heated cigarette, the cigarette includes a plug 5, a tobacco section 1, a low-resistance section 2, and a functional filter section 3 which are in turn coaxially abutting from upstream to downstream. The cigarette is wrapped with an external wrapper 4. The outer wrapper 4 includes cigarette paper and tipping paper, which together wrap the cigarettes as a whole.
其中，所述低吸阻段2为具有轴向中心空腔2-1和周向侧壁通孔2-2的空心纸管，所述侧壁通孔2-2的数量为2。Wherein, the low suction resistance section 2 is a hollow paper tube with an axial central cavity 2-1 and a circumferential side wall through hole 2-2, and the number of the side wall through hole 2-2 is two.
所述外部包裹件4上与所述侧壁通孔2-2相应位置设置同轴通孔4-1，所述同轴通孔4-1的孔径不小于所述侧壁通孔3-2的孔径。A coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 3-2的孔孔。 The aperture.
所述功能滤嘴段3包括降温段3-1和过滤段3-2。The functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2.
所述烟草段1内包括烟草颗粒。The tobacco section 1 includes tobacco particles.
所述堵头5的形状为圆柱状，材质为铝箔，其厚度约3mm,，具有良好的热稳定性，不会因为温度升高而发生显著形变。The shape of the plug 5 is cylindrical, the material is aluminum foil, and the thickness is about 3 mm. It has good thermal stability and will not be significantly deformed due to temperature rise.
所述烟支从上游到下游同轴抵接的堵头5和烟草段1形成了上游端密封的烟草段。The plug 5 and the tobacco section 1 coaxially abutting on the cigarettes from upstream to downstream form a sealed tobacco section at the upstream end.
与实施例1相比，本实施例2的烟支利用堵头5密封烟草段，烟支生产工序中，堵头5可以与烟草段1共同卷接，方便工业化生产。若使用密封膜等元件单独密封烟草段，要改变烟支生产工序，对现有设备改动较大，不方便工业化生产。Compared with Example 1, the cigarette of Example 2 uses the plug 5 to seal the tobacco section. In the cigarette production process, the plug 5 can be rolled together with the tobacco section 1, which is convenient for industrial production. If components such as a sealing film are used to seal the tobacco section separately, the cigarette production process has to be changed, and the existing equipment is greatly modified, which is inconvenient for industrial production.
实施例3Example 3
如图3，一种密闭加热式烟支，所述烟支从上游到下游包括依次同轴抵接的 堵头5、烟草段1、低吸阻段2、和功能滤嘴段3，所述烟支外部包裹有外部包裹件4。外部包裹件4包括卷烟纸和接装纸，两者共同将所述烟支包裹为一个整体。As shown in Figure 3, a closed-heated cigarette, the cigarette includes a plug 5, a tobacco section 1, a low-resistance section 2, and a functional filter section 3 that are in turn coaxially abutting from upstream to downstream. The cigarette is wrapped with an external wrapper 4. The outer wrapper 4 includes cigarette paper and tipping paper, which together wrap the cigarettes as a whole.
其中，所述低吸阻段2为具有轴向中心空腔2-1和周向侧壁通孔2-2的空心纸管，所述侧壁通孔2-2的数量为2；Wherein, the low suction resistance section 2 is a hollow paper tube with an axial central cavity 2-1 and a circumferential side wall through hole 2-2, and the number of the side wall through hole 2-2 is 2;
所述烟草段1轴心处具有轴向第一烟气通道1-1。所述烟草段1非轴心处还包括6条轴向第二烟气通道1-2。所述第一烟气通道1-1和第二烟气通道1-2轴向贯穿所述烟草段1。即，所述烟草段1呈蜂窝煤式结构。The tobacco section 1 has an axial first flue gas channel 1-1 at its axis. The non-axial portion of the tobacco section 1 also includes 6 axial second smoke passages 1-2. The first flue gas channel 1-1 and the second flue gas channel 1-2 axially penetrate the tobacco section 1. That is, the tobacco section 1 has a honeycomb structure.
所述外部包裹件4上与所述侧壁通孔2-2相应位置设置同轴通孔4-1，所述同轴通孔4-1的孔径不小于所述侧壁通孔3-2的孔径。A coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 3-2的孔孔。 The aperture.
所述功能滤嘴段3包括降温段3-1和过滤段3-2。The functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2.
所述烟草段1内包括烟草成形体。The tobacco section 1 includes a tobacco shaped body.
所述堵头5的形状为圆柱状，材质为铝箔，其厚度约3mm，具有良好的热稳定性，不会因为温度升高而发生显著形变。The shape of the plug 5 is cylindrical, the material is aluminum foil, and its thickness is about 3 mm. It has good thermal stability and will not be significantly deformed due to temperature rise.
本实施例3的烟支在烟草段1内首次设计了若干条轴向通道，有利于烟雾在密闭烟草段内1的扩散。For the cigarette of Example 3, a number of axial channels are designed in the tobacco section 1 for the first time, which is beneficial to the diffusion of smoke in the closed tobacco section 1.
实施例4Example 4
如图4，一种密闭加热式烟支，所述烟支从上游到下游包括依次同轴抵接的上游端密封的烟草段1、低吸阻段2、和功能滤嘴段3，所述烟支外部包裹有外部包裹件4。外部包裹件4包括卷烟纸和接装纸，两者共同将所述烟支包裹为一个整体。As shown in Fig. 4, a closed heating cigarette, the cigarette includes, from upstream to downstream, a tobacco section 1, a low suction resistance section 2, and a functional filter section 3 which are in turn coaxially abutted and sealed at the upstream end. The cigarette is wrapped with an external wrapper 4. The outer wrapper 4 includes cigarette paper and tipping paper, which together wrap the cigarettes as a whole.
其中，所述低吸阻段2为具有轴向中心空腔2-1和周向侧壁通孔2-2的管体，所述侧壁通孔2-2的数量为2个；所述低吸阻段2还包括设置在所述中心空腔2-1周向侧壁的具有一定透气度的阻挡层2-3。Wherein, the low suction resistance section 2 is a tube body with an axial central cavity 2-1 and a circumferential side wall through hole 2-2, and the number of the side wall through hole 2-2 is two; The low suction resistance section 2 also includes a barrier layer 2-3 with a certain air permeability provided on the circumferential side wall of the central cavity 2-1.
所述阻挡层2-3为具有一定透气度的纸基或醋酸纤维成形材料。所述阻挡层2-3完全覆盖所述中心空腔2-1周向侧壁和所述侧壁通孔2-2。The barrier layer 2-3 is a paper-based or acetate fiber molded material with a certain degree of air permeability. The barrier layer 2-3 completely covers the circumferential sidewall of the central cavity 2-1 and the sidewall through hole 2-2.
所述密封烟草段1的上游端密封方式为：所述密封烟草段1的上游端同轴抵接有堵头5。The sealing method of the upstream end of the sealed tobacco section 1 is as follows: the upstream end of the sealed tobacco section 1 abuts against a plug 5 coaxially.
所述外部包裹件4上与所述侧壁通孔2-2相应位置设置同轴通孔4-1，所述同轴通孔4-1的孔径不小于所述侧壁通孔2-2的孔径。A coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 2-2的孔孔。 The aperture.
所述低吸阻段2管壁和所述阻挡层2-3之间具有空心管状的支撑层，所述侧 壁通孔2-2贯穿所述支撑层。There is a hollow tubular support layer between the tube wall of the low suction resistance section 2 and the barrier layer 2-3, and the side wall through hole 2-2 penetrates the support layer.
所述功能滤嘴段3包括降温段3-1和过滤段3-2。The functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2.
所述烟草段1内包括含烟草的凝胶体。The tobacco section 1 includes a tobacco-containing gel.
本实施例4的烟支在低吸阻段2设置了覆盖在中心空腔2-1周向侧壁和侧壁通孔2-2上的阻挡层2-3。阻挡层2-3具有一定透气度，抽吸时，不影响外界空气的流入；不抽吸时，烟气亦不会通过侧壁通孔2-2逸出，因此可有效减小烟气流失。The cigarette of this embodiment 4 is provided with a barrier layer 2-3 covering the circumferential side wall of the central cavity 2-1 and the side wall through hole 2-2 in the low suction resistance section 2. The barrier layer 2-3 has a certain degree of air permeability. When it is sucked, it does not affect the inflow of outside air; when it is not sucked, the smoke will not escape through the side wall through holes 2-2, so it can effectively reduce the loss of smoke. .
实施例5Example 5
如图5，一种密闭加热式烟支，所述烟支从上游到下游包括依次同轴抵接的上游端密封的烟草段1、低吸阻段2、和功能滤嘴段3，所述烟支外部包裹有外部包裹件4。其中，所述低吸阻段2为具有轴向中心空腔2-1和周向侧壁通孔2-2的管体，所述侧壁通孔2-2的数量为2个，孔径为1.5mm；所述低吸阻段2还包括设置在所述中心空腔2-1内具有若干个轴向通道的限制导流元件2-4，限制导流元件2-4的孔隙率为40％。As shown in Fig. 5, a closed heating cigarette, the cigarette includes, from upstream to downstream, a tobacco section 1, a low suction resistance section 2, and a functional filter section 3 which are in turn coaxially abutted and sealed at the upstream end. The cigarette is wrapped with an external wrapper 4. Wherein, the low suction resistance section 2 is a pipe body with an axial central cavity 2-1 and a circumferential side wall through hole 2-2, the number of the side wall through hole 2-2 is two, and the diameter is 1.5mm; the low suction resistance section 2 also includes a restricting flow guiding element 2-4 with a number of axial channels arranged in the central cavity 2-1, and the porosity of the restricting flow guiding element 2-4 is 40 %.
所述限制导流元件2-4为具有一定透气度的纸基材料。所述限制导流元件2-4完全覆盖所述中心空腔2-1周向侧壁和所述侧壁通孔2-2，且完全填充所述中心空腔2-1。The restricting and guiding element 2-4 is a paper-based material with a certain degree of air permeability. The restricting flow guiding element 2-4 completely covers the circumferential side wall of the central cavity 2-1 and the side wall through hole 2-2, and completely fills the central cavity 2-1.
所述密封烟草段1的上游端密封方式为：所述密封烟草段1的上游端同轴抵接有堵头5。堵头5为不透气材质，且具有一定的热稳定性，在400℃下不会发生显著形变，例如硅胶块、金属块。The sealing method of the upstream end of the sealed tobacco section 1 is as follows: the upstream end of the sealed tobacco section 1 abuts against a plug 5 coaxially. The plug 5 is made of airtight material and has certain thermal stability, and will not undergo significant deformation at 400°C, such as silica gel blocks and metal blocks.
所述外部包裹件4上与所述侧壁通孔2-2相应位置设置同轴通孔4-1，所述同轴通孔4-1的孔径不小于所述侧壁通孔2-2的孔径。所述低吸阻段2管壁和所述限制导流元件2-4之间具有空心管状的支撑层，所述侧壁通孔2-2贯穿所述支撑层。所述限制导流元件2-4包括最外层的中空柱状限制层和内部的若干个中空柱状导流层，所述限制层的透气度小于所述导流层的透气度。A coaxial through hole 4-1 is provided on the outer wrapper 4 at a position corresponding to the side wall through hole 2-2, and the diameter of the coaxial through hole 4-1 is not smaller than the side wall through hole 2-2的孔孔。 The aperture. There is a hollow tubular support layer between the pipe wall of the low-resistance section 2 and the restricting flow guiding element 2-4, and the side wall through hole 2-2 penetrates the support layer. The restricting flow guiding element 2-4 includes an outermost hollow cylindrical restricting layer and a plurality of hollow cylindrical guiding layers inside, and the air permeability of the restricting layer is less than the air permeability of the air guiding layer.
所述功能滤嘴段3包括降温段3-1和过滤段3-2。所述烟草段1内包括含烟草的凝胶体。The functional filter section 3 includes a cooling section 3-1 and a filtering section 3-2. The tobacco section 1 includes a tobacco-containing gel.
本实施例5的烟支在低吸阻段2设置了具有轴向烟气扩散通道的限制导流元件2-4。限制导流元件2-4具有一定透气度，轴向烟气扩散阻力低，径向烟气扩 散阻力高。抽吸时，不影响外界空气的流入；不抽吸时，由于径向烟气扩散阻力高，烟气亦不会通过侧壁通孔2-2逸出，因此可有效减小烟气流失。烟支的吸阻可以通过改变周向侧壁通孔2-2的孔径、数量和限制导流元件2-4的孔隙率进行调节。The cigarette of Example 5 is provided with a restricting flow guide element 2-4 having an axial smoke diffusion channel in the low suction resistance section 2. The restricting flow guiding element 2-4 has a certain degree of air permeability, the axial smoke diffusion resistance is low, and the radial smoke diffusion resistance is high. When pumping, it does not affect the inflow of outside air; when not pumping, due to the high radial smoke diffusion resistance, the smoke will not escape through the side wall through holes 2-2, so the loss of smoke can be effectively reduced. The suction resistance of the cigarette can be adjusted by changing the pore size and number of the through holes 2-2 in the circumferential side wall and the porosity of the restricting flow guiding element 2-4.
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. It should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

  1. 一种密闭加热式烟支，其特征在于，所述烟支从上游到下游包括依次同轴抵接的上游端密封的烟草段(1)、低吸阻段(2)、和功能滤嘴段(3)，所述烟支外部包裹有外部包裹件(4)；An airtight heating cigarette, characterized in that, from upstream to downstream, the cigarette includes a tobacco section (1), a low-resistance section (2), and a functional filter section that are in turn coaxially abutted and sealed at the upstream end. (3), the cigarette is wrapped with an external wrapper (4);
    其中，所述低吸阻段(2)为具有轴向中心空腔(2-1)和周向侧壁通孔(2-2)的管体，所述侧壁通孔(2-2)的数量至少为一个；Wherein, the low suction resistance section (2) is a tube body with an axial central cavity (2-1) and a circumferential side wall through hole (2-2), and the side wall through hole (2-2) The number of is at least one;
    所述烟草段(1)的上游端密封方式为：所述烟草段(1)圆周和/或上游端面由不透气或可控透气度的纸基或箔基材料包裹构成密闭体系；或者所述烟草段(1)的上游端同轴抵接有堵头(5)。The upstream end sealing method of the tobacco section (1) is as follows: the circumference and/or upstream end surface of the tobacco section (1) is wrapped by a paper-based or foil-based material with air-impermeable or controllable air permeability to form a closed system; or A plug (5) is coaxially abutted on the upstream end of the tobacco section (1).
  2. 根据权利要求1所述的烟支，其特征在于，当所述烟草段(1)的上游端密封方式为所述烟草段(1)的上游端同轴抵接有堵头(5)时，所述烟草段(1)轴心处具有轴向第一烟气通道(1-1)，任选地，所述烟草段(1)非轴心处还包括若干条轴向第二烟气通道(1-2)。The cigarette according to claim 1, wherein when the upstream end of the tobacco section (1) is sealed in a manner that the upstream end of the tobacco section (1) is coaxially abutted with a plug (5), The tobacco section (1) has an axial first flue gas channel (1-1) at the axis, and optionally, the tobacco section (1) also includes a plurality of axial second flue gas channels at the non-axis (1-2).
  3. 根据权利要求1所述的烟支，其特征在于，所述低吸阻段(2)还包括设置在所述中心空腔(2-1)周向侧壁的具有一定透气度的阻挡层(2-3)。The cigarette according to claim 1, wherein the low suction resistance section (2) further comprises a barrier layer ( 2-3).
  4. 根据权利要求1所述的烟支，其特征在于，所述低吸阻段(2)还包括设置在所述中心空腔(2-1)内具有轴向通道的限制导流元件(2-4)。The cigarette according to claim 1, wherein the low suction resistance section (2) further comprises a restricting flow guide element (2- 4).
  5. 根据权利要求1-4任一项所述的烟支，其特征在于，所述外部包裹件(4)上与所述侧壁通孔(2-2)相应位置设置同轴通孔(4-1)，所述同轴通孔(4-1)的孔径不小于所述侧壁通孔(3-2)的孔径。The cigarette according to any one of claims 1-4, characterized in that the outer wrapper (4) is provided with a coaxial through hole (4-) corresponding to the side wall through hole (2-2). 1) The aperture of the coaxial through hole (4-1) is not less than the aperture of the side wall through hole (3-2).
  6. 根据权利要求1或2所述的烟支，其特征在于，所述低吸阻段(2)可为空管。The cigarette according to claim 1 or 2, wherein the low-draw resistance section (2) can be an empty tube.
  7. 根据权利要求3所述的烟支，其特征在于，所述低吸阻段(2)管壁和所述阻挡层(2-3)之间具有空心管状的支撑层，所述侧壁通孔(2-2)贯穿所述支撑层。The cigarette according to claim 3, characterized in that there is a hollow tubular support layer between the tube wall of the low suction resistance section (2) and the barrier layer (2-3), and the side wall has a through hole (2-2) Through the support layer.
  8. 根据权利要求3所述的烟支，其特征在于，所述阻挡层(2-3)完全覆盖所述中心空腔(2-1)周向侧壁和所述侧壁通孔(2-2)。The cigarette according to claim 3, characterized in that the barrier layer (2-3) completely covers the circumferential side wall of the central cavity (2-1) and the side wall through hole (2-2) ).
  9. 根据权利要求4所述的烟支，其特征在于，所述限制导流元件(2-4)内部具有若干个轴向通道，外部轴向通道侧壁的透气度小于中心轴向通道的透气度。The cigarette according to claim 4, characterized in that the restricting and guiding element (2-4) has a plurality of axial channels inside, and the air permeability of the side wall of the outer axial channel is less than the air permeability of the central axial channel .
  10. 根据权利要求4所述的烟支，其特征在于，所述限制导流元件(2-4) 包括最外层的中空柱状限制层和内部的若干个中空柱状导流层，所述限制层的透气度小于所述导流层的透气度。The cigarette according to claim 4, characterized in that, the restricting flow guiding element (2-4) comprises an outermost hollow cylindrical restriction layer and several hollow cylindrical guiding layers inside, and the restriction layer The air permeability is less than the air permeability of the guide layer.
PCT/CN2020/118760 2020-05-08 2020-09-29 Airtight heating tobacco rod WO2021073425A1 (en)

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CN202010382903.6A CN113615869A (en) 2020-05-08 2020-05-08 Airtight hot type cigarette that adds
CN202010382902.1 2020-05-08
CN202010382902.1A CN113615868A (en) 2020-05-08 2020-05-08 Airtight heating type cigarette with plug
CN202010382903.6 2020-05-08
CN202010422761.1A CN111567863A (en) 2020-05-19 2020-05-19 Airtight heating type cigarette with smoke channel
CN202010422579.6A CN111588079A (en) 2020-05-19 2020-05-19 Closed heating cigarette with controllable suction resistance
CN202010422575.8 2020-05-19
CN202010422761.1 2020-05-19
CN202010422579.6 2020-05-19
CN202010422575.8A CN111567862A (en) 2020-05-19 2020-05-19 Sealed heating cigarette capable of reducing side flow smoke

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CN111567862A (en) * 2020-05-19 2020-08-25 云南中烟工业有限责任公司 Sealed heating cigarette capable of reducing side flow smoke
CN111567863A (en) * 2020-05-19 2020-08-25 云南中烟工业有限责任公司 Airtight heating type cigarette with smoke channel
CN111588079A (en) * 2020-05-19 2020-08-28 云南中烟工业有限责任公司 Closed heating cigarette with controllable suction resistance

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US20140238421A1 (en) * 2013-02-22 2014-08-28 Fin Branding Group, LLC Soft Tip for an Electronic Cigarette
CN104413545A (en) * 2013-09-05 2015-03-18 北京中卫神农慢性病医学研究院有限公司 Treatment type non-combustion cigarette and purpose thereof
CN109349683A (en) * 2018-12-06 2019-02-19 陈征 Blank pipe filled type with sealed membrane heats do not burn smoking article and application
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CN111567863A (en) * 2020-05-19 2020-08-25 云南中烟工业有限责任公司 Airtight heating type cigarette with smoke channel
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