Aerosol-generating product

Abstract

The present invention belongs to the technical field of tobacco, and particularly relates to an aerosol-generating product. The aerosol-generating product comprises an aerosol-generating substrate section (1), a functional section and a filter tip section (3), wherein the functional section and the aerosol-generating substrate section (1) or the filter tip section (3) are wrapped into an integrated structure by means of paper; and the functional section comprises a cooling section (2), and the cooling section (2) comprises a hollow cooling tube (21) and an airflow dispersion part (22) slidably arranged in a cavity of the hollow cooling tube in a non-compression manner. In the technical solution, by means of the provision of the airflow dispersion part (22) in the cavity of the hollow cooling tube (21), when entering the cavity of the hollow cooling tube (21), an aerosol is blocked by the airflow dispersion part (22) and redirected and is subjected to flow division by means of each of the hollow cooling tube (21) and the airflow dispersion part (22), and at the same time, an airflow concentrated in the cavity of the hollow cooling tube (21) is dispersed; and in a suction state, the airflow dispersion part (22) moves in the direction of the filter tip section (3) along the cavity of the hollow cooling tube (21), and the generation of displacement thereof reduces the flow velocity of the aerosol and also increases the period of time for delaying the flow of the aerosol through the hollow cooling tube (21), thereby achieving the effect of cooling the aerosol.

Description

An aerosol generating product Technical Field

[0001] The present invention belongs to the technical field of aerosols, and in particular relates to an aerosol generating product. Background Art

[0002] Aerosol-generating articles that heat, rather than combust, an aerosol-generating substrate, such as a tobacco-containing substrate, are well known in the art. Typically, in such heated aerosol-generating articles, aerosol is generated by transferring heat from a heating source to the aerosol-generating substrate or material. During use of the aerosol-generating article, volatile compounds are released from the aerosol-generating substrate by heat transfer from the heating source and are entrained in air drawn through the aerosol-generating article. As the released compounds cool, they condense to form an aerosol.

[0003] Compared with the temperature reached by the combustion pile in conventional cigarettes, the tobacco-containing matrix is ​​usually heated to a lower temperature, such as 200-350°C. This temperature prevents nicotine and some flavoring components in the tobacco matrix from forming aerosols and separates from the tobacco matrix. For this reason, nicotine or flavoring substances are added to the aerosol matrix to provide a satisfactory aerosol content.

[0004] What's puzzling is that the heating temperature of heated aerosol-generating products differs by several hundred degrees from the temperature of the combustion cone of conventional cigarettes. While the temperature of the aerosol drawn out through the filter of a conventional cigarette is ideal, when directly inhaling the filter of a heated aerosol-generating product, which has a lower heating temperature, the temperature is much higher, even making it impossible for the consumer to draw. To address this issue, conventional non-combustion aerosol-generating products reduce the amount of heat transferred from the aerosol matrix by adding a support segment or cooling segment between the aerosol matrix segment and the filter. Furthermore, the various shapes and structures of the support segment or cooling segment, such as a hollow structure, have limited effect on reducing the temperature of the aerosol. Consequently, the temperature at the filter end of the resulting aerosol-generating product still does not reach the optimal temperature, and in particular, the temperature of the first puff remains high. To address this issue, prior art has proposed fixing a structural component within the hollow cavity of the cooling segment to slow the aerosol airflow and achieve cooling. However, the use of this structure increases draw resistance, making drawing more difficult.

[0005] Summary of the Invention

[0006] The object of the present invention is to provide an aerosol generating product to solve the problem that the aerosol temperature at the filter end of existing non-heated aerosol generating products is high, causing discomfort to consumers.

[0007] An aerosol-generating product, which is heated by an aerosol-generating device to generate an aerosol, comprises an aerosol-generating matrix segment, a functional segment, and a filter segment; the functional segment and the aerosol-generating matrix segment or the filter segment are wrapped with paper to form an integral structure;

[0008] The functional section includes a cooling section, which is composed of a hollow cooling pipe and an air flow dispersion portion non-compressively slidably arranged in the cavity of the hollow cooling pipe.

[0009] Preferably, the air flow dispersion portion is in the shape of a sphere, a cylinder, a cone, a cone combined with a cylinder, or a hemisphere combined with a cylinder.

[0010] Preferably, when the airflow dispersion portion is a cylinder, a cone combined with a cylinder, or a hemisphere combined with a cylinder, a plurality of non-through grooves close to one end of the aerosol generating matrix segment are evenly arranged axially on the outer wall of the cylinder.

[0011] Preferably, the axial center line of the groove is parallel to the axial center line of the hollow cooling tube or the axial center line of the groove is spiral.

[0012] Preferably, in the cross section of the airflow dispersion portion, the total area of ​​the grooves is between 40% and 85% of the cross-sectional area of ​​the cavity of the hollow cooling pipe.

[0013] Preferably, aerosol is able to pass through the air flow dispersion portion.

[0014] Preferably, the aerosol can pass through the tube wall of the hollow cooling tube, and the suction resistance of the aerosol through the tube wall of the hollow cooling tube is smaller than the suction resistance of the aerosol through the airflow dispersion portion.

[0015] Preferably, in a non-suction state, the airflow dispersion portion is arranged at one end of the hollow cooling tube close to the aerosol generating matrix section.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The technical solution of the present invention is to set an air flow dispersion part in the cavity of the hollow cooling tube. When the aerosol generated by the aerosol matrix enters the cavity of the hollow cooling tube, it is blocked and redirected by the air flow dispersion part, and is diverted through the hollow cooling tube and the air flow dispersion part respectively, while dispersing the air flow concentrated in the cavity of the hollow cooling tube. In the suction state, the air flow dispersion part moves along the cavity of the hollow cooling tube toward the filter section. The displacement slows down the aerosol flow rate while increasing the time for delaying the aerosol to flow through the hollow cooling tube, thereby achieving the purpose of cooling the aerosol. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of an aerosol-generating article according to the present invention.

[0019] FIG2 is a schematic diagram of an axial cross-section of the hollow cooling tube of the present invention.

[0020] FIG3 is a schematic diagram of an embodiment of the air flow dispersion portion of the present invention.

[0021] Explanation of the accompanying reference numerals: 1. aerosol generating matrix section; 2. cooling section; 3. filter section; 4. tipping paper; 21. hollow cooling tube; 22. air flow dispersion section; 221. groove; 222. cone combined with cylinder. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, and cannot be interpreted as limiting the technical solution of the present invention.

[0023] As shown in Figures 1 to 3, the present application provides an aerosol-generating product for generating an inhalable aerosol when heated. The aerosol-generating product includes an aerosol-generating matrix segment 1, a functional segment and a filter segment 3. The aerosol-generating matrix segment contains tobacco material and an aerosol-forming agent. The tobacco material here is not limited. For example, granular materials processed from tobacco or extracts and other materials, tobacco leaves, reconstituted tobacco leaves, etc. can all be used to implement the technical solution of the present application.

[0024] This application also provides a heating device for heating the aerosol-generating product and an aerosol-generating system for controlling the heating device. The heating device is used to control the aerosol generation volume and the number of puffs of the aerosol-generating product. The aerosol-generating matrix also uses an aerosol-forming agent, specifically propylene glycol, glycerol, and other materials currently used in aerosol generators, as well as aroma-producing substances or nicotine.

[0025] The functional segment of the present application is wrapped together with the aerosol generating matrix segment by paper, and then connected to the filter segment by the tipping paper 4. In other embodiments of the present application, the functional segment and the filter segment are tipped together by paper, collectively referred to as the filter segment, and then the tipping paper is used to connect the filter segment to the aerosol generating matrix to form an aerosol generating product.

[0026] The functional section of the present application includes a cooling section 2. In other cases, it may also include other parts, such as a support section. The cooling section 2 of the present application consists of a hollow cooling tube 21 and an airflow dispersion portion 22 that is non-compressively slidably disposed within the cavity of the hollow cooling tube. The material of the hollow cooling tube of the present application can be the same as or different from that of the filter section. However, the key point is that the tube wall of the hollow cooling tube of the present application has aerosol permeability. In other embodiments of the present application, the tube wall of the hollow cooling tube may not all have aerosol permeability. For example, the outer wall of the hollow cooling tube is treated to be aerosol-incapable, while aerosol can only pass through the inner wall and interior of the hollow cooling tube.

[0027] The material of the air flow dispersion part of the present application is a porous material or is made of a material with pores. In the present application, the pores of the air flow dispersion part are not required to be axially through, but can be random pores, but it is sufficient to ensure that the aerosol can pass through the air flow dispersion part during inhalation. Moreover, when the air flow dispersion part of the present application is installed in the cavity of the hollow cooling tube, there is no compression, that is, there is no air flow dispersion part pressing the inner wall of the hollow cooling tube to cause deformation, but it is just installed in the cavity of the hollow cooling tube, and under normal circumstances, the air flow dispersion part cannot move in the cavity of the hollow cooling tube. Only during the suction process, the change in pressure will cause the air flow dispersion part to move in the cavity of the hollow cooling tube.

[0028] The air flow dispersion part of the present application is spherical, cylindrical, cone, cone combined with cylinder 222 or hemisphere combined with cylinder. It is not required whether the material of the air flow dispersion part is made by compression. The present application only requires that, during the suction process, the aerosol generated by the aerosol-generating matrix has a suction resistance through the hollow cooling tube wall that is less than the aerosol's suction resistance through the air flow dispersion part, and during the suction process, there is also a gap between the air flow dispersion part and the hollow cooling tube through which the aerosol can pass. The key point is that during the suction process, due to the suction force, the air flow dispersion part will slide in the cavity of the hollow cooling tube, but it cannot make the air flow dispersion part drift in the cavity of the hollow cooling tube.

[0029] In other embodiments of the present application, when the airflow dispersion portion is a cylinder, a cone combined with a cylinder 222, or a hemisphere combined with a cylinder, a plurality of (for example, 4 or 6) grooves 221 are uniformly arranged axially on the outer wall of the cylinder. In the present application, the axial centerline of the groove is parallel to the axial centerline of the hollow cooling tube or the axial centerline of the groove is spiral. The spiral shape can increase the passage time of the smoke, which is beneficial to cooling. In the present application, the groove is non-through at one end near the aerosol generating matrix segment and through at the other end near the filter segment. In the cross section of the airflow dispersion portion, the sum of the areas of the multiple grooves is between 40% and 85% of the cross section of the cavity of the hollow cooling tube. The grooves in this part play the role of re-converging the airflow to provide the filter segment with a sufficient amount of aerosol to satisfy the inhalation feeling.

[0030] When the airflow dispersion part is installed into the hollow cooling tube cavity, the airflow dispersion part is placed near one end of the aerosol generating matrix segment, and when the airflow dispersion part includes a conical structure, the cone tip corresponds to the aerosol generating matrix segment. Similarly, the hemisphere of the airflow dispersion part which is a combination of a hemisphere and a cylinder corresponds to the aerosol generating matrix segment. In this way, when the airflow beam mixed with aerosol transmitted through the aerosol generating matrix segment hits the airflow dispersion part, part of the airflow will pass through the airflow dispersion part. However, due to the existence of the suction resistance of the airflow dispersion part, part of the airflow will be dispersed, and after passing through the wall of the hollow cooling tube with an air resistance relatively smaller than that of the airflow dispersion part, it will converge in the cavity of the hollow cooling tube, and part of the aerosol will directly pass through the wall of the hollow cooling tube and merge into the filter segment. In this case, the airflow of the aerosol is dispersed and the penetration route is increased, the flow rate is reduced and the stroke is increased, which naturally plays a role in cooling the aerosol.

[0031] Especially when taking the first or second puff, when the aerosol in the aerosol generating matrix is ​​not completely mixed with the air to cool down, the air flow dispersion part structure of the present application causes the air flow dispersion part to move toward the filter section within the cavity of the hollow cooling tube under the action of puffing, so that the flow rate of the aerosol in the functional section is further reduced, thereby ensuring that the puffing temperature of the first and / or second puff is suitable for consumers.

[0032] The above description is merely an embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application discloses the preferred embodiments as above, it is not intended to limit the present application. Any technical personnel familiar with the present profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. An aerosol-generating article, which is heated by an aerosol-generating device to generate an aerosol, characterized in that It includes an aerosol - generating substrate section, a functional section, and a filter section; the functional section and the aerosol - generating substrate section or the filter section are wrapped into an integral structure by paper. The functional section includes a cooling section, and the cooling section consists of a hollow cooling tube and an airflow dispersion part non - compressively and slidably arranged in the cavity of the hollow cooling tube.

2. The aerosol-generating article according to claim 1, wherein The airflow dispersion part is spherical, cylindrical, conical, a combination of a cone and a cylinder, or a combination of a hemisphere and a cylinder.

3. The aerosol-generating article according to claim 2, wherein, When the airflow dispersion part is a cylinder, a combination of a cone and a cylinder, or a combination of a hemisphere and a cylinder, a plurality of non - through grooves are axially and uniformly arranged on the outer side wall of the cylinder near one end of the aerosol - generating substrate section.

4. The aerosol-generating article according to claim 3, characterized in that, The axial center line of the groove is parallel to the axial center line of the hollow cooling tube or the axial center line of the groove is spiral.

5. The aerosol-generating article according to claim 3, wherein, In the cross - section of the airflow dispersion part, the total area of the grooves is between 40% and 85% of the cross - sectional area of the cavity of the hollow cooling tube.

6. The aerosol-generating article according to claim 1, wherein, Aerosol can pass through the airflow dispersion part.

7. The aerosol-generating article according to claim 6, characterized in that, Aerosol can pass through the tube wall of the hollow cooling tube, and the draw resistance of the aerosol passing through the tube wall of the hollow cooling tube is less than the draw resistance of the aerosol passing through the airflow dispersion part.

8. The aerosol-generating article according to claim 1, characterized in that, In the non - puffing state, the airflow dispersion part is arranged at one end of the hollow cooling tube close to the aerosol - generating substrate section.

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