阅读说明：本技术 一种可促进气流排出的烟支 (Cigarette capable of promoting air flow discharge ) 是由 王汝� 黄锋 雷萍 王爽 龚为民 邓楠 吴俊� 王乐 缪明明 郑绪东 汤建国 于 2020-05-07 设计创作，主要内容包括：本发明属于加热卷烟技术领域,特别涉及一种可促进气流排出的烟支。所述烟支包含：从上游到下游依次抵接的烟草段(3)、冷却段(2)和滤嘴段(1)；所述滤嘴段(1)内部依次为从中心向外围分布的第一锥形腔(1a)、第二环状锥形腔(1b)、和第三环状锥形腔(1c),所述冷却段(2)内部设置有第三隔断层使之形成两个不同的锥形腔,依次为从中心向外围分布的第四锥形腔(2a)、第五环状锥形腔(2b)。本发明的烟支利用多重文丘里效应、降温材料、和引入外界空气等方案可以加速烟气的流入用户口腔,降低了抽吸时的阻力,可以降低烟气温度,增大烟雾量,避免了抽吸时烫嘴的情况,从而达到良好的抽吸体验。(The invention belongs to the technical field of heating cigarettes, and particularly relates to a cigarette capable of promoting airflow discharge. The cigarette comprises: a tobacco section (3), a cooling section (2) and a filter tip section (1) which are abutted in sequence from upstream to downstream; the filter tip section (1) is inside to be in proper order from the center to the first toper chamber (1a) of peripheral distribution, the annular toper chamber of second (1b) and the annular toper chamber of third (1c), cooling section (2) inside is provided with the third partition layer and makes it form two different toper chambers, is in proper order from the center to the peripheral fourth toper chamber (2a) of distributing, the annular toper chamber of fifth (2 b). The cigarette of the invention can accelerate the smoke to flow into the mouth of a user by utilizing the schemes of multiple Venturi effects, cooling materials, introduction of outside air and the like, reduce the resistance during smoking, reduce the smoke temperature, increase the smoke quantity, avoid the situation of mouth burning during smoking, and further achieve good smoking experience.)

1. A cigarette for promoting the discharge of an air stream, said cigarette comprising:

a tobacco section (3), a cooling section (2) and a filter tip section (1) which are abutted in sequence from upstream to downstream;

a first partition layer and a second partition layer are arranged in the filter tip section (1) to form three different conical cavities, namely a first conical cavity (1a), a second annular conical cavity (1b) and a third annular conical cavity (1c) which are distributed from the center to the periphery in sequence;

wherein, the downstream of the first conical cavity (1a) is narrow and the upstream is wide, and the first conical cavity is positioned at the central position of the filter section (1) and is filled with a first cooling material section; the second annular conical cavity (1b) is wide at the downstream and narrow at the upstream, is positioned at the periphery of the first conical cavity (1a), and is internally provided with a cavity; the downstream of the third annular conical cavity (1c) is narrow and the upstream is wide, the third annular conical cavity is positioned at the periphery of the second annular conical cavity (1b), and a second cooling material section is filled in the third annular conical cavity; the upstream end part of the side wall of the first conical cavity (1a) is provided with at least one air hole (1d), and the first conical cavity (1a) is in airflow communication with the second annular conical cavity (1b) through the air hole (1 d);

a third partition layer is arranged in the cooling section (2) to form two different conical cavities, namely a fourth conical cavity (2a) and a fifth annular conical cavity (2b) which are distributed from the center to the periphery in sequence;

the fourth conical cavity (2a) is a cavity which is narrow at the downstream and wide at the upstream; the downstream of the fifth annular conical cavity (2b) is wide and the upstream of the fifth annular conical cavity is narrow, the fifth annular conical cavity is positioned at the periphery of the fourth conical cavity (2a), and a third cooling material section is filled in the fifth annular conical cavity;

wherein the first conical cavity (1a), the fourth conical cavity (2a) and the fifth annular conical cavity (2b) are all in the shape of a truncated cone.

2. Cigarette according to claim 1, characterised in that the first conical cavity (1a) and the second conical annular cavity (1b) are level in height, or the first conical cavity (1a) projects downstream of the cigarette with respect to the second conical annular cavity (1 b).

3. Cigarette according to claim 1, characterised in that the downstream end of the fourth conical chamber (2a) is in air-flow communication at least with the upstream end of the first conical chamber (1a), and in that the downstream end of the fifth annular conical chamber (2b) is in air-flow communication at least with the upstream end of the third annular conical chamber (1 c).

4. A rod according to claim 1, characterised in that the volume ratio of the first conical cavity (1a) to the filter section (1) is between 60% and 80%.

5. The tobacco rod of claim 1, wherein the first, second, and third segments of temperature reducing material are independently selected from the group consisting of: a polylactic acid tow section, an acetate tow section, a mica material section, a mint fiber tow section, a xylitol fiber tow section, or a cotton fiber tow section.

6. Tobacco rod according to claim 1, characterized in that the tobacco section (3) is filled with a solid substance containing tobacco material, comprising tobacco filaments, tobacco sheets or tobacco rods.

7. The tobacco rod of claim 1, wherein the first, second, and third partition layers are independently selected from the group consisting of: a gel-coated composite paper layer, a polylactic acid layer, an acetate fiber layer, a mica material layer, a mint fiber layer, a xylitol fiber layer, or a cotton fiber layer.

8. A rod according to claim 1, characterised in that said second annular tapered chamber (1b) is of truncated-cone shape and said third annular tapered chamber (1c) is of truncated-cone or conical shape.

9. The cigarette of claim 1, wherein the cigarette is a cylinder or a prism, and the tapered cavity is a cone or a pyramid.

Technical Field

The invention belongs to the technical field of heating cigarettes, and particularly relates to a cigarette capable of promoting airflow discharge.

Background

With the low harmfulness of the heated cigarette generally recognized and the scientific and technical elements contained in the product, the product is accepted and liked by more and more consumers. The situation that the cigarette is heated due to small smoke quantity, large suction resistance and the situation that the edge of the tipping paper is too high in temperature and the mouth is scalded can occur in the smoking process of the heated cigarette.

The present invention has been made to solve the above problems.

Disclosure of Invention

The invention provides a cigarette capable of promoting airflow discharge, which comprises:

the tobacco segment 3, the cooling segment 2 and the filter segment 1 are abutted from upstream to downstream in sequence;

a first partition layer and a second partition layer are arranged in the filter section 1 to form three different conical cavities, namely a first conical cavity 1a, a second annular conical cavity 1b and a third annular conical cavity 1c which are distributed from the center to the periphery in sequence;

the downstream of the first conical cavity 1a is narrow and the upstream is wide, and the first conical cavity is positioned at the central position of the filter section 1 and filled with a first cooling material section; the second annular conical cavity 1b is wide at the downstream and narrow at the upstream, is positioned at the periphery of the first conical cavity 1a, and is internally provided with a cavity; the downstream of the third annular tapered cavity 1c is narrow and the upstream thereof is wide, the third annular tapered cavity is positioned at the periphery of the second annular tapered cavity 1b, and a second cooling material section is filled in the third annular tapered cavity; the upstream end part of the side wall of the first conical cavity 1a is provided with at least one air hole 1d, and the first conical cavity 1a and the second annular conical cavity 1b are in airflow communication through the air hole 1 d;

a third partition layer is arranged in the cooling section 2 to form two different conical cavities, namely a fourth conical cavity 2a and a fifth annular conical cavity 2b which are distributed from the center to the periphery in sequence;

the fourth conical cavity 2a is a cavity with a narrow downstream and a wide upstream; the downstream of the fifth annular conical cavity 2b is wide and the upstream of the fifth annular conical cavity is narrow, the fifth annular conical cavity is positioned at the periphery of the fourth conical cavity 2a, and a third cooling material section is filled in the fifth annular conical cavity;

wherein, the first conical cavity 1a, the fourth conical cavity 2a and the fifth annular conical cavity 2b are all in a truncated cone shape.

The purpose of the truncated cones is to ensure the mutual communication of the air flows.

The function of the partition layer is to support and to allow a controlled degree of air permeability, for example air-tight or slightly air-permeable.

Preferably, first conical cavity 1a and second annular conical cavity 1b are highly even, perhaps first conical cavity 1a for second annular conical cavity 1b to the cigarette props up the low reaches protrusion.

Preferably, the downstream end of the fourth conical cavity 2a is in gas flow communication with at least the upstream end of the first conical cavity 1a, and the downstream end of the fifth annular conical cavity 2b is in gas flow communication with at least the third annular conical cavity 1 c.

Preferably, the downstream end of the fourth conical chamber 2a is in gas flow communication only with the upstream end of the first conical chamber 1 a. Of course, other situations, such as the upstream end diameter of the first conical cavity 1a being larger than the downstream end diameter of the fourth conical cavity 2a, may also have similar effects when the first conical cavity 1a is in common airflow communication with the fourth conical cavity 2a and the fifth annular conical cavity 2 b.

Preferably, the volume ratio of the first conical cavity 1a to the filter segment 1 is 60% to 80%.

Preferably, the first cooling material segment, the second cooling material segment and the third cooling material segment are independently selected from: a polylactic acid tow section, an acetate tow section, a mica material section, a mint fiber tow section, a xylitol fiber tow section, or a cotton fiber tow section.

Preferably, the tobacco section 3 is filled with a solid substance containing a tobacco material, comprising a tobacco thread, a tobacco sheet, or a tobacco rod.

Preferably, the first, second and third partition layers are independently selected from: a composite paper layer coated with gel, or a polylactic acid layer, an acetate fiber layer, a mica material layer, a mint fiber layer, a xylitol fiber layer, or a cotton fiber layer.

Preferably, the second annular tapered cavity 1b is a truncated cone shape, and the third annular tapered cavity 1c is a truncated cone shape or a cone shape. When the third annular tapered cavity 1c is in a truncated cone shape, during suction, a small amount of external air enters the third annular tapered cavity 1c through the downstream end thereof, is mixed with the smoke in the fifth annular tapered cavity 2b, and then enters the air vent 1 d; when the annular tapered cavity of third 1c is the toper, during the suction, gas in the annular tapered cavity of third 1c is only for passing through the gas that fifth annular tapered cavity 2b flowed in makes the flue gas temperature that the drainage was come reduce gradually through the cooling material in venturi effect and two annular tapered cavities, then gets into bleeder vent 1 d.

Preferably, the outermost layer of the cigarette is wrapped with air-permeable tipping paper. This can disperse the flue gas in the third annular conical chamber 1 c.

Preferably, the wrapping layers of the filter segment 1 are all air-permeable material layers.

Preferably, the cigarette is a cylinder or a prism, and the conical cavity is a cone or a pyramid.

The truncated cone shape as used herein refers to the structure of a cone or pyramid that is left after the upper small cone is cut off by a plane parallel to the bottom surface.

The technical scheme can be freely combined on the premise of no contradiction.

The materials mentioned in the invention are all existing materials, the shapes of the materials are obtained by utilizing the existing process, such as cooling material sections, tobacco sections, partition layers and the like, and the specific forms comprise: polylactic acid tow segment, cellulose acetate tow segment, mica material segment, mint fiber tow segment, xylitol fiber tow segment, cotton fiber tow segment, or tobacco silk, tobacco sheet, tobacco rod, or gel-coated composite paper layer, or polylactic acid layer, cellulose acetate layer, mica material layer, mint fiber layer, xylitol fiber layer, or cotton fiber layer.

The invention relates to a cigarette which is characterized in that the flow direction of smoke in the cigarette is from upstream to downstream.

The principle of the invention is as follows:

the Venturi effect, namely the phenomenon that the flow velocity of the fluid is increased when the fluid passes through the reduced flow cross section, is utilized, and the flow velocity is inversely proportional to the flow cross section area. While an increase in flow rate is accompanied by a decrease in fluid pressure, as is known from bernoulli's law. The invention provides a related structure by utilizing the principle that the flow velocity is increased and the temperature is reduced when gas enters a narrow channel from a wide channel.

Upon smoking, the tobacco section 3 is combusted or cured and the smoke stream flows from the cigarettes upstream and downstream to the cooling section 2. The fourth conical cavity 2a in the cooling section 2 can increase the flow speed of the flue gas and reduce the temperature by a structure with a narrowed width, so that the flue gas is cooled and rapidly enters the first conical cavity 1a in the filter section 1.

When the flue gas enters the first conical cavity 1a, the temperature of the flue gas is reduced and the flue gas rapidly flows out due to the principle that the cooling material and the same throttling surface are gradually reduced. At the moment, the second annular conical cavity 1b sucks air from the outside of the cigarette to enter the cavity due to the reason that the throttling surface is gradually reduced, and the air enters the first conical cavity 1a through the air holes 1d, so that the air flow of the first conical cavity 1a is increased, and the smoke temperature in the first conical cavity 1a is reduced, so that the purposes of increasing the smoke volume and reducing the smoke temperature during smoking are achieved.

And the third annular conical cavity 1c at the outermost part of the filter section 1 is mainly used for draining the flue gas in the fifth annular conical cavity 2b at the periphery of the cooling section 1, and the temperature of the drained flue gas is gradually reduced through the Venturi effect and the temperature reducing materials in the two annular conical cavities.

Therefore, the edge temperature of the tipping paper is reduced due to the design of the fifth annular conical cavity 2b and the third annular conical cavity 1c at the outermost periphery, the situation of mouth burning during suction is avoided, and good suction experience is achieved.

The invention has the following beneficial effects:

the invention designs a cigarette capable of promoting airflow to discharge for the first time, wherein a filter tip section and a cooling section in the cigarette are provided with a plurality of conical cavities, and the scheme of utilizing multiple Venturi effects, cooling materials, introducing external air and the like can accelerate the flow of smoke into the oral cavity of a user, reduce the resistance during suction, reduce the temperature of the smoke and increase the smoke quantity. Particularly, due to the existence of the fifth annular conical cavity 2b and the third annular conical cavity 1c on the outermost periphery, the temperature of the edge of the close tipping paper is reduced, the situation of mouth burning during suction is avoided, and good suction experience is achieved.

Drawings

FIG. 1 is a schematic view of a cigarette according to example 1, which facilitates airflow discharge.

FIG. 2 is a schematic view of a cigarette according to example 2, which can promote airflow discharge.

List of reference numerals:

1. the filter tip section, 1a, first toper chamber, 1b, second annular toper chamber, 1c, third annular toper chamber, 1d, bleeder vent, 2, cooling segment, 2a, fourth toper chamber, 2b, fifth annular toper chamber, 3, tobacco section.

Detailed Description

The present invention will be further described with reference to the following embodiments.

Example 1

Referring to fig. 1, a cigarette for promoting airflow discharge, the cigarette comprising:

the tobacco segment 3, the cooling segment 2 and the filter segment 1 are abutted from upstream to downstream in sequence; the outermost periphery of the cigarette is wrapped with tipping paper. The wrapping materials of the cooling section 2 and the filter tip section 1 are both air-permeable materials.

A first partition layer and a second partition layer are arranged in the filter section 1 to form three different conical cavities, namely a first conical cavity 1a, a second annular conical cavity 1b and a third annular conical cavity 1c which are distributed from the center to the periphery in sequence;

the downstream of the first conical cavity 1a is narrow and the upstream is wide, and the first conical cavity is positioned at the central position of the filter section 1 and filled with a first cooling material section; the second annular conical cavity 1b is wide at the downstream and narrow at the upstream, is positioned at the periphery of the first conical cavity 1a, and is internally provided with a cavity; the downstream of the third annular tapered cavity 1c is narrow and the upstream thereof is wide, the third annular tapered cavity is positioned at the periphery of the second annular tapered cavity 1b, and a second cooling material section is filled in the third annular tapered cavity; 2 air holes 1d are formed in the upstream end part of the side wall of the first conical cavity 1a, and the first conical cavity 1a and the second annular conical cavity 1b are in airflow communication through the air holes 1 d;

a third partition layer is arranged in the cooling section 2 to form two different conical cavities, namely a fourth conical cavity 2a and a fifth annular conical cavity 2b which are distributed from the center to the periphery in sequence;

the fourth conical cavity 2a is a cavity with a narrow downstream and a wide upstream; the downstream of the fifth annular conical cavity 2b is wide and the upstream is narrow, the fifth annular conical cavity is positioned at the periphery of the fourth conical cavity 2a, and a third cooling material section is filled in the fifth annular conical cavity.

The first conical cavity 1a and the second annular conical cavity 1b are level in height,

the downstream end of the fourth conical cavity 2a is in gas flow communication only with the upstream end of the first conical cavity 1a, and the downstream end of the fifth annular conical cavity 2b is in common gas flow communication with the upstream ends of the third annular conical cavity 1c and the second annular conical cavity 1 b.

Of course, in other embodiments, the downstream end of the fifth annular tapered cavity 2b may be in air flow communication with only the third annular tapered cavity 1 c.

The first conical cavity 1a, the second annular conical cavity 1b, the fourth conical cavity 2a and the fifth annular conical cavity 2b are all truncated cones corresponding to cones. The third annular tapered cavity 1c is conical.

The cigarette is a cylinder.

The volume ratio of the first conical cavity 1a to the filter segment 1 is 60%.

The first cooling material section, the second cooling material section and the third cooling material section are all polylactic acid tow sections.

The tobacco section 3 is filled with a tobacco rod. The tobacco sections may be burned or cured.

The first, second and third isolating layers are all composite paper layers coated with gel.

Example 2

Referring to fig. 2, the difference from embodiment 1 is that the first conical cavity 1a protrudes downstream of the cigarette rod relative to the second annular conical cavity 1 b. At the time of suction, the lip end contacts only the convex portion of the first tapered chamber 1 a.

The flow of gas in the smoke plume is shown by the arrows in figure 2.

The smoke generated from the tobacco segment 3 is mostly passed through the fourth conical cavity 2a and merged into the first conical cavity 1a together with the air introduced from the second annular conical cavity 1b, and enters the mouth of the user.

A small part of smoke generated from the tobacco section 3 enters the fifth annular conical cavity 2b, then a small part of smoke flows into the first conical cavity 1a through the second annular conical cavity 1b, and a large part of smoke enters the third annular conical cavity 1c and then flows out through tipping paper wrapped on the outermost layer of the cigarette.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.