Aerosol generating article

Abstract

An aerosol generating article, comprising an aerosol generating substrate section (10) and a functional section (20), wherein at least one air channel (10a) is provided in the aerosol generating substrate section (10), and the air channel (10a) extends through at least one of two opposite ends of the aerosol generating substrate section (10) in a first direction; and the functional section (20) is arranged at one end of the aerosol generating substrate section (10) in the first direction, the functional section (20) is provided with a supporting section (21), a cooling section (22) and a filtering section (23), which are sequentially arranged in the first direction, and the supporting section (21) is located between the aerosol generating substrate section (10) and the cooling section (22). The aerosol generating article has a high aerosol extraction efficiency and high structural strength, and can well improve the vaping experience of a user.

Description

An aerosol generating product

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202310929413.7 and application date of July 26, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the technical field of smoking products, and in particular to an aerosol generating product. Background Art

[0004] In the related art, there is an aerosol generating product provided with an aerosol generating matrix section and a filter section. The aerosol generating matrix section is used to generate aerosol by heating with an external heat source, and the aerosol is filtered by the filter section and then inhaled by the user.

[0005] However, the aerosol generating matrix segment in the related technology has a dense structure and low aerosol extraction efficiency, and the temperature of the aerosol generating product after heating is relatively high. When inhaling, the excessively high temperature can easily cause the filter segment to shrink and deform due to heat, affecting the inhalation experience.

[0006] Summary of the Invention

[0007] In view of this, the embodiments of the present application hope to provide an aerosol generating product that can improve the smoking experience.

[0008] To achieve the above objectives, the present invention provides an aerosol-generating article, comprising:

[0009] an aerosol-generating substrate segment, wherein the aerosol-generating substrate segment has at least one air channel therein, the air channel penetrating at least one of two opposite ends of the aerosol-generating substrate segment along a first direction;

[0010] A functional segment is arranged at one end of the aerosol generating matrix segment along the first direction, and the functional segment is provided with a supporting segment, a cooling segment and a filtering segment arranged in sequence along the first direction, and the supporting segment is located between the aerosol generating matrix segment and the cooling segment.

[0011] In one embodiment, at least one of the supporting section and the cooling section is a tubular structure.

[0012] In one embodiment, the tubular structure is a fiber tube or a metal tube.

[0013] In one embodiment, the support section is a support tube having a first hollow channel, and the cooling section is a cooling tube having a second hollow channel; the outer dimensions of the cross section of the support tube are the same as the outer dimensions of the cross section of the cooling tube.

[0014] In one embodiment, the support section is a support tube having a first hollow channel, and the cooling section is a cooling tube having a second hollow channel; the cross-sectional dimension of the first hollow channel is less than or equal to the cross-sectional dimension of the second hollow channel.

[0015] In one embodiment, the support section is a support tube having a first hollow channel and a first airflow channel. The first airflow channel is located around the first hollow channel and passes through opposite ends of the support tube along the first direction.

[0016] In one embodiment, the cooling section is a cooling tube having a second hollow channel and a second air flow channel, and the second air flow channel is located around the second hollow channel and passes through opposite ends of the cooling tube along the first direction.

[0017] In one embodiment, the support section is the support tube, which includes a first outer circular layer, a first inner circular layer sleeved in the first outer circular layer, and a first corrugated layer connected between the first outer circular layer and the first inner circular layer, and the cross-section of the first corrugated layer is wavy; the interior of the first inner circular layer is a first hollow channel, and the first outer circular layer, the first inner circular layer and the first corrugated layer jointly define a plurality of first airflow channels.

[0018] In one embodiment, the support section is the support tube, and the aerosol-generating article further comprises a flavoring substance disposed in the first airflow channel.

[0019] In one embodiment, the cooling section is the cooling tube, which includes a second outer circular layer, a second inner circular layer sleeved in the second outer circular layer, and a second corrugated layer connected between the second outer circular layer and the second inner circular layer, and the cross-section of the second corrugated layer is wavy; the interior of the second inner circular layer is a second hollow channel, and the second outer circular layer, the second inner circular layer and the second corrugated layer jointly define a plurality of second airflow channels.

[0020] In one embodiment, the cooling section is the cooling tube, and the aerosol generating product further includes a flavoring substance disposed in the second airflow channel.

[0021] In one embodiment, the support section is a support tube having a first hollow channel, and a portion of an outer side wall of the support tube is recessed to form a groove, and the groove runs through opposite ends of the support tube along the first direction.

[0022] In one embodiment, the cooling section is a cooling tube having a second hollow channel, and a portion of the outer wall of the cooling tube is recessed to form a groove, and the groove runs through opposite ends of the cooling tube along the first direction.

[0023] In one embodiment, the support section is a support tube having a first hollow channel, the support tube including a first tube wall and a metal coating, the first tube wall defines the first hollow channel, and at least one of the inner wall surface and the outer wall surface of the first tube wall is coated with the metal coating.

[0024] In one embodiment, the material of the metal coating is one of aluminum, copper and tin, or a combination of at least two thereof.

[0025] In one embodiment, the cooling section is a cooling tube having a second hollow channel, and the cross-sectional dimensions of the first hollow channel are equal to or unequal to the cross-sectional dimensions of the second hollow channel.

[0026] In one embodiment, the support section is a support tube having a first hollow channel, the support tube includes a first tube wall and a partition, the first tube wall defines the first hollow channel, and the partition is arranged in the first hollow channel to separate the first hollow channel into multiple third airflow channels.

[0027] In one embodiment, one of the supporting section and the cooling section is the tubular structure, and the other is a solid fiber structure.

[0028] In one embodiment, the filter segment is a solid fiber structure or a porous structure.

[0029] In one embodiment, the aerosol generating matrix segment, the supporting segment, the cooling segment and the filtering segment are coaxially arranged cylinders and the aerosol generating matrix segment is an integrated structure, and the first direction is the axial direction of the aerosol generating matrix segment, the supporting segment, the cooling segment and the filtering segment.

[0030] In one embodiment, the aerosol-generating article further comprises an outer wrapping layer, which covers the outer periphery of the aerosol-generating substrate segment and the functional segment.

[0031] The present application provides an aerosol-generating product, comprising an aerosol-generating matrix segment having an airway and a functional segment located at one end of the aerosol-generating matrix segment along a first direction. The functional segment comprises a support segment, a cooling segment, and a filter segment arranged sequentially along the first direction, with the support segment located between the aerosol-generating matrix segment and the cooling segment. The airway in the aerosol-generating matrix segment can extend the airflow path, increase the flow velocity of the airflow in the aerosol-generating matrix segment, thereby increasing the impact of the airflow and enabling uniform mixing of the aerosol. This can further improve the extraction efficiency and uniformity of the aerosol in the aerosol-generating matrix segment and enhance the user's puffing experience. The support segment can increase the structural strength of the functional segment to effectively prevent the functional segment from collapsing and deforming due to the high temperature of the aerosol. The cooling segment can cool the aerosol to a temperature acceptable to the human body. The aerosol-generating product has high aerosol extraction efficiency and high structural strength, thereby effectively enhancing the user's puffing experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic structural diagram of a first aerosol generating article according to an embodiment of the present application;

[0033] FIG2 is a schematic diagram of the structure of the aerosol generating article shown in FIG1 , with the outer wrapping layer omitted;

[0034] FIG3 is a cross-sectional view of the aerosol-generating article shown in FIG1 ;

[0035] FIG4 is a cross-sectional view of a second aerosol-generating article according to an embodiment of the present application;

[0036] FIG5 is a schematic structural diagram of the support section shown in FIG4 ;

[0037] FIG6 is a cross-sectional view of a third aerosol-generating article according to an embodiment of the present application;

[0038] FIG7 is a cross-sectional view of a fourth aerosol-generating article according to an embodiment of the present application;

[0039] FIG8 is a cross-sectional view of a fifth aerosol-generating article according to an embodiment of the present application;

[0040] FIG9 is a schematic structural diagram of the support section shown in FIG8 ;

[0041] FIG10 is a cross-sectional view of a sixth aerosol-generating article according to an embodiment of the present application.

[0042] FIG11 is a cross-sectional view of a seventh aerosol-generating article according to an embodiment of the present application;

[0043] FIG12 is a cross-sectional view of the temperature-lowering section shown in FIG11 . DETAILED DESCRIPTION

[0044] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the term "first direction" and the like is based on the orientation or positional relationship shown in FIG2 . These directional terms are intended solely to facilitate the description of the embodiments of the present application and to simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the embodiments of the present application. The embodiments of the present application provide an aerosol-generating article, as shown in Figures 1 to 4, 6 to 8, and 10 . The aerosol-generating article includes an aerosol-generating substrate segment 10 and a functional segment 20.

[0045] The aerosol-generating substrate segment 10 has at least one air channel 10a therein, extending through at least one of its two opposite ends along a first direction. A functional segment 20 is disposed at one end of the aerosol-generating substrate segment 10 along the first direction. The functional segment 20 comprises a support segment 21, a cooling segment 22, and a filtering segment 23, arranged sequentially along the first direction. The support segment 21 is located between the aerosol-generating substrate segment 10 and the cooling segment 22.

[0046] The aerosol generating article is used in conjunction with an aerosol generating device having a heating component. Specifically, the heating component heats and atomizes the aerosol generating substrate segment 10 in the aerosol generating article to generate an aerosol for users to inhale or for use in medicine, beauty, etc.

[0047] There are various heating methods for heating components. Exemplary heating methods include central heating and peripheral heating. Central heating involves inserting the heating component into the aerosol-generating article to heat it from the inside out. Peripheral heating involves placing the heating component around the periphery of the aerosol-generating article to heat it from the outside in. These heating methods include resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, and the like.

[0048] The specific structure of the aerosol-generating matrix segment 10 is not limited herein. For example, in one embodiment, the aerosol-generating matrix segment 10 can be made of the atomizing medium itself, such as a smoke-flavoring flavoring medium. In other embodiments, the aerosol-generating matrix segment 10 can also include a substrate and an atomizing medium disposed on the substrate. The substrate can be, for example, high-temperature-resistant carbon fiber. The substrate can improve the strength of the aerosol-generating matrix segment 10 while also allowing it to withstand a certain degree of high temperature without generating odor.

[0049] The specific composition of the aerosol-generating matrix segment 10 is not limited herein. For example, in one embodiment, the aerosol-generating matrix segment 10 may include plant ingredients, auxiliary ingredients, smoke-generating agent ingredients, adhesive ingredients, and the like. In one embodiment, the plant ingredients are one or more combinations of powders obtained by crushing tobacco leaf material, tobacco leaf fragments, tobacco stems, tobacco dust, and flavorful plants. Plant ingredients are the core source of the product's flavor. Endogenous substances in the plant ingredients, such as nicotine, enter the human bloodstream through aerosolization, promoting dopamine production in the pituitary gland, thereby achieving a sense of physiological satisfaction.

[0050] In one embodiment, the auxiliary agent may be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. Inorganic fillers can provide skeletal support for the plant component and, while also possessing micropores, can increase the porosity of the wall material after the plant component is formed, thereby improving the aerosol release rate.

[0051] Lubricants include one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase particle flowability, reduce friction between particles, and achieve a more uniform particle density. They can also reduce mold pressure and reduce mold wear.

[0052] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can, to a certain extent, slow the loss of flavoring substances during storage, increase their stability, and improve the sensory quality of the product. Emulsifiers (also known as surfactants) can reduce the interfacial tension between the water-soluble and water-insoluble components in a mixed system and form a relatively strong film on the surface of the droplets. Alternatively, due to the charge imparted by the emulsifier, a double layer is formed on the surface of the droplets, preventing the droplets from aggregating and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

[0053] The function of the smoke-generating agent component is to generate a large amount of steam when heated, thereby increasing the amount of smoke produced by the smoking article. In one embodiment, the smoke-generating agent may include, for example: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butylene glycol and glycerol); an ester of a polyhydric alcohol (such as monoacetin, diacetin or triacetin); a monocarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid) or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, triactin, meso-erythritol, a mixture of diacetin, diethyl suberate, triethyl citrate, benzyl alcohol);

[0054] Benzyl phenylacetate, phenyl ethyl acetate, ethyl vanillate, tributyrin, lauryl acetate)

[0055] One or more combinations.

[0056] In one embodiment, the adhesive component is a natural plant-extracted, non-ionically modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive wetting and intimately contacting the product component materials creates intermolecular attraction, thereby bonding the powders and liquids of the component materials. The use of a natural plant-extracted, non-ionic adhesive can prevent the release of harmful substances such as methanol, formaldehyde, and acrolein caused by colloid modification, thereby improving the safety of the product.

[0057] Illustratively, the aerosol generating matrix segment 10 can be a particle combination, which is a reconstituted tobacco medium, for example, a reconstituted tobacco medium containing ingredients such as a smoke-generating agent and tobacco. The aerosol generating matrix segment 10 is an integrated structure, for example, an integrated structure that can be formed by injection molding, compression molding, or extrusion. Extrusion molding refers to a processing method in which a raw material mixture is added to an extruder, and the material is pushed forward by the screw through the action between the extruder barrel and the screw, and continuously passes through the die to form various cross-section products or semi-finished products. The aerosol matrix formed by extrusion molding is in a strip shape.

[0058] Since the aerosol generating matrix segment 10 is a particle combination, it is an integrated medium when the aerosol generating matrix segment 10 is heated and sucked or stops being heated, and is not prone to disintegration and falling off. This solves the problems in the prior art of the thin sheet, filamentous or loose particle aerosol generating matrix segment 10, such as loose sheets, falling off of filamentous components and particle components, and difficulty in cleaning.

[0059] In addition, the shape of the aerosol generating matrix segment 10 is not limited. For example, please refer to Figure 2. The aerosol generating matrix segment 10 can be cylindrical. The cross-section of the cylindrical aerosol generating matrix segment 10 can be circular or other shapes, such as polygons (including but not limited to triangles, squares, prisms, etc.), ellipses, runway shapes or irregular shapes, etc., where irregular shapes refer to other symmetrical or asymmetrical shapes other than the shapes listed above.

[0060] The first direction is the arrangement direction of the aerosol generating matrix segment 10, the supporting segment 21, the cooling segment 22 and the filtering segment 23. The aerosol generating product is inserted into the aerosol generating device along the first direction, and the aerosol generating product is also taken out of the aerosol generating device along the first direction. The length of the aerosol generating matrix segment 10 along the first direction can be longer, shorter, or the same as the length in other directions.

[0061] For example, when the aerosol-generating substrate segment 10 has a cylindrical appearance, the first direction is the axial direction of the aerosol-generating substrate segment 10 . It should be noted that the axial length of the aerosol-generating substrate segment 10 may be smaller than its diameter.

[0062] For another example, when the appearance of the aerosol generating matrix segment 10 is a rectangular parallelepiped, the first direction is still the direction defined above, that is, the arrangement direction of the aerosol generating matrix segment 10, the supporting segment 21, the cooling segment 22 and the filtering segment 23, or the direction of taking and placing the aerosol generating product on the aerosol generating device. The first direction of the aerosol generating matrix segment 10 can be any direction of the length, width, and height of the rectangular parallelepiped.

[0063] For example, referring to Figure 2, the aerosol generating matrix segment 10, the supporting segment 21, the cooling segment 22 and the filtering segment 23 can be coaxially arranged cylinders and the aerosol generating matrix segment 10 is an integrated structure, and the first direction is the axial direction of the aerosol generating matrix segment 10, the supporting segment 21, the cooling segment 22 and the filtering segment 23.

[0064] The air channel 10a in Figure 3 passes through the opposite ends of the aerosol generating matrix segment 10 along the first direction. In some embodiments, the air channel 10a may also only pass through one end of the aerosol generating matrix segment 10 close to the functional segment 20, while the other end is a closed end. Alternatively, the air channel 10a may also only pass through one end of the aerosol generating matrix segment 10 away from the functional segment 20, while the other end is a closed end.

[0065] Compared with the air passage 10a running through one end of the aerosol generating matrix segment 10 along the first direction, the air passage 10a running through both ends of the aerosol generating matrix segment 10 along the first direction is more conducive to reducing the user's inhalation resistance.

[0066] The number of the air passages 10a may be one or more.

[0067] The airway 10a may be a straight airway 10a as shown in FIG. 3 . The straight airway 10a is an airway 10a extending in a straight line, or in other words, the extending direction of the straight airway 10a is a straight line.

[0068] The airway 10a may also be a spiral airway 10a. This refers to an airway 10a having a non-zero curvature curve in at least a portion of its extension direction. For example, along its extension direction, the spiral airway 10a may have both non-zero curvature curve segments and zero curvature straight segments, or it may have only non-zero curvature curve segments and no zero curvature straight segments. In other words, the spiral airway 10a only needs to not extend in a straight line from its starting point to its end point along its extension direction.

[0069] When there are multiple air passages 10 a , some of the air passages 10 a may be straight air passages 10 a , and other air passages 10 a may be spiral air passages 10 a .

[0070] The shape of the cross section of the airway 10a is not limited. For example, the cross section may be circular, polygonal (including but not limited to triangle, square, prism, etc.), elliptical, racetrack-shaped, or irregular-shaped.

[0071] The airway 10a can extend the airflow path and increase the flow velocity of the airflow in the aerosol generating matrix segment 10, thereby increasing the impact force of the airflow and enabling the aerosol to be evenly mixed, thereby improving the extraction efficiency and uniformity of the aerosol in the aerosol generating matrix segment 10 and enhancing the user's inhalation experience.

[0072] The supporting segment 21 is mainly used to provide support for the functional segment 20 to improve the structural strength of the functional segment 20, especially the structural strength at high temperatures.

[0073] Exemplarily, the supporting segment 21 may have good structural strength at a high temperature of at least 200°C.

[0074] In some scenarios, the support section 21 can also provide a certain suction resistance.

[0075] The cooling section 22 is mainly used to cool the aerosol to avoid "burning the mouth" during the inhalation process.

[0076] For example, the cooling section 22 can reduce the temperature of the aerosol to 65° C. or below.

[0077] The supporting section 21 and the cooling section 22 may have the same structure or different structures.

[0078] The materials of the supporting section 21 and the cooling section 22 may be the same or different.

[0079] The filter section 23 is mainly used to filter harmful components in the aerosol and adjust the inhalation resistance.

[0080] For example, filter segment 23 may be a solid fiber structure, primarily composed of fibers, with aerosols passing through the naturally formed pores between the fibers. Solid fiber structures lack macroscopic airflow channels, which are channels primarily formed through processing. Dimensions such as the cross-sectional area and length of the airflow channels can be varied based on design requirements, while the cross-sectional area and length of the pores between the fibers are primarily formed naturally during processing.

[0081] The material of the solid fiber structure can be PET, acetate fiber, etc.

[0082] The solid fiber structure can perform directionally filtering of aerosols to remove harmful components therein, and can also adjust the inhalation resistance to better prevent aerosol-generating products from causing inhalation voids due to too low inhalation resistance, thereby affecting the inhalation experience.

[0083] Exemplarily, the filter section 23 may also be a porous structure, where a porous structure refers to a structure having macroscopic air flow channels.

[0084] Exemplarily, the suction resistance of the filter segment 23 can be 100Pa~350Pa (including endpoint values), for example, the suction resistance of the filter segment 23 can be 100Pa, 150Pa, 170Pa, 200Pa, 230Pa, 260Pa, 280Pa, 320Pa, 350Pa, etc.

[0085] It should be noted that the aerosol-generating product relies on the aerosol-generating substrate segment 10 to generate aerosol, and the functional segment 20 does not generate aerosol.

[0086] 1 and 3 , the aerosol-generating article may further include an outer wrapping layer 30 , which covers the outer periphery of the aerosol-generating substrate segment 10 and the functional segment 20 .

[0087] The material of the outer wrapping layer 30 is not limited. For example, the outer wrapping layer 30 includes but is not limited to one or more combinations of fiber paper, metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, PE (polyethylene), PBAT (butylene adipate-co-terephthalate), and the like.

[0088] Exemplarily, the outer wrapping layer 30 can be a one-layer or two-layer structure. For example, when the outer wrapping layer 30 is a one-layer structure, the aerosol generating matrix segment 10, the support segment 21, the cooling segment 22 and the filter segment 23 can be wrapped at the same time. When the outer wrapping layer 30 is a two-layer structure, the support segment 21, the cooling segment 22 and the filter segment 23 can be first wrapped by one outer wrapping layer 30, and then the aerosol generating matrix segment 10, the support segment 21, the cooling segment 22 and the filter segment 23 can be wrapped by another outer wrapping layer 30. Alternatively, the outer wrapping layer 30 can also be wrapped in other ways.

[0089] The aerosol generation matrix segment in the related technology has a dense structure and low aerosol extraction efficiency. In addition, the heating temperature of the aerosol generation matrix segment during the heating process is around 300°C. During inhalation, the temperature at the outlet of the aerosol generation matrix segment is generally around 200°C or even higher. Excessively high temperature can easily cause the filter segment to shrink and deform due to heat, affecting the appearance and inhalation experience.

[0090] The aerosol generating product of the embodiment of the present application is provided with an aerosol generating matrix segment 10 having an airway 10a and a functional segment 20 located at one end of the aerosol generating matrix segment 10 along the first direction. The functional segment 20 is provided with a supporting segment 21, a cooling segment 22 and a filtering segment 23 arranged in sequence along the first direction. The supporting segment 21 is located between the aerosol generating matrix segment 10 and the cooling segment 22. The airway 10a on the aerosol generating matrix segment 10 can extend the airflow path and increase the flow velocity of the airflow in the aerosol generating matrix segment 10, thereby increasing the impact force of the airflow and enabling the aerosol to be evenly mixed, thereby improving the extraction efficiency and uniformity of the aerosol in the aerosol generating matrix segment 10 and enhancing the user's puffing experience. The supporting segment 21 can increase the structural strength of the functional segment 20 to better prevent the functional segment 20 from collapsing and deforming under the high temperature of the aerosol. The cooling segment 22 can cool the aerosol to reduce the temperature to a level acceptable to the human body. The aerosol generating product has a high efficiency in extracting aerosol and a high structural strength, which can better improve the user's puffing experience.

[0091] In one embodiment, referring to FIG. 3 , FIG. 4 , FIG. 6 to FIG. 8 , and FIG. 10 , at least one of the support section 21 and the cooling section 22 may be a tubular structure, where the tubular structure refers to a tubular structure having a hollow channel.

[0092] According to design requirements, the support section 21 can be a tubular structure and the cooling section 22 can be a non-tubular structure, or the support section 21 can be a non-tubular structure and the cooling section 22 can be a tubular structure, or both the support section 21 and the cooling section 22 can be tubular structures.

[0093] The tubular structure has high structural strength, and the hollow channel of the tubular structure can facilitate the smooth passage of aerosol.

[0094] Exemplarily, the tubular structure can be a fiber tube, such as an acetate tube (i.e., the material is acetate fiber), a PET (polyethylene terephthalate) tube (i.e., the material is PET), a paper tube (i.e., the material is plant fiber, non-plant fiber), etc.

[0095] Illustratively, the tubular structure may be a metal tube, such as an aluminum tube.

[0096] In one embodiment, referring to FIG. 3 , the support section 21 is a support tube having a first hollow channel 21 a, and the cooling section 22 is a cooling tube having a second hollow channel 22 a. That is, the support section 21 and the cooling section 22 can both be tubular structures, and the first hollow channel 21 a is connected to the second hollow channel 22 a to jointly form a channel for aerosol to pass through.

[0097] Please refer to Figure 3. The external dimensions of the cross section of the support tube can be the same as the external dimensions of the cross section of the cooling tube, that is, the outer contour of the cross section of the support tube is exactly the same as the outer contour of the cross section of the cooling tube, so as to facilitate the compounding or splicing of the aerosol generating product.

[0098] Referring to Figure 3 , the cross-sectional dimensions of the first hollow channel 21a can be smaller than those of the second hollow channel 22a. That is, the space within the first hollow channel 21a is relatively narrow compared to the second hollow channel 22a. This arrangement can create a Venturi effect between the first and second hollow channels 21a, 22a (the Venturi effect refers to the phenomenon in which a fluid increases in velocity when passing through a reduced flow area, with the velocity being inversely proportional to the flow area). This allows aerosol to pass through the first hollow channel 21a more quickly, thereby enabling faster aerosol extraction. The second hollow channel 22a of the cooling tube has a relatively large cross-sectional dimension, resulting in a larger specific surface area, enabling rapid cooling of the aerosol.

[0099] The cross-sectional size refers to the size of the cross-sectional area that can be calculated. For example, the cross-sectional areas of the first hollow channel 21a and the second hollow channel 22a in FIG3 are both circular. Therefore, the cross-sectional size refers to the diameter or radius of the cross-sectional area of ​​the first hollow channel 21a and the second hollow channel 22a.

[0100] In addition, when the external dimensions of the cross section of the support tube are the same as or similar to the external dimensions of the cross section of the cooling tube, if the cross section of the first hollow channel 21a is smaller than the cross section of the second hollow channel 22a, it is equivalent to the wall thickness of the support tube being greater than the wall thickness of the cooling tube, and the support tube can provide better support for the functional section 20.

[0101] In some embodiments, the cross-sectional dimension of the first hollow channel 21 a may also be equal to or greater than the cross-sectional dimension of the second hollow channel 22 a .

[0102] In the aerosol-generating article shown in FIG3 , when the aerosol-generating matrix segment 10 is heated, the aerosol is released from the aerosol-generating matrix segment 10. Since at least some of the micropores or gaps within the wall material of the aerosol-generating matrix segment 10 are connected to the airway 10a, the aerosol released by the heated aerosol-generating matrix segment 10 can enter the airway 10a through the micropores or gaps connected to the airway 10a. Simultaneously, external airflow enters the airway 10a from the end of the aerosol-generating matrix segment 10 facing away from the functional segment 20, driving the aerosol through the first hollow channel 21a, the second hollow channel 22a, and the filter segment 23, before finally flowing into the user's oral cavity. Since the cross-sectional dimensions of the first hollow channel 21a in FIG3 are smaller than those of the second hollow channel 22a, a Venturi effect is generated between the first hollow channel 21a and the second hollow channel 22a, allowing the aerosol to pass through the first hollow channel 21a more quickly, thereby enabling faster aerosol extraction. The cooling tube's second hollow channel 22a has a relatively large cross-sectional dimension, resulting in a large specific surface area, enabling rapid cooling of the aerosol. In one embodiment, referring to Figures 4 and 5 , the support tube can be provided with a first airflow channel 21b. The first airflow channel 21b is located around the first hollow channel 21a and extends through opposite ends of the support tube along the first direction.

[0103] The number of the first air flow channel 21b may be one or more.

[0104] For example, referring to Figure 5 , the support tube may include a first outer layer 214, a first inner layer 215 sleeved within the first outer layer 214, and a first corrugated layer 216 connected between the first outer layer 214 and the first inner layer 215. The first corrugated layer 216 has a wavy cross-section. The interior of the first inner layer 215 defines a first hollow channel 21a. The first outer layer 214, the first inner layer 215, and the first corrugated layer 216 collectively define a plurality of first airflow channels 21b.

[0105] The cooling section 22 in Figure 4 is a cooling tube, and the first airflow channel 21b is connected to the second hollow channel 22a. In other words, part of the aerosol can flow from the first airflow channel 21b into the second hollow channel 22a.

[0106] In some embodiments, the cooling section 22 may not be a tubular structure.

[0107] During the heating process of the aerosol generating matrix segment 10, the external airflow will flow into the aerosol generating matrix segment 10 from the side of the aerosol generating matrix segment 10 away from the functional segment 20, and carry the aerosol generated by the aerosol generating matrix segment 10 to flow toward the functional segment 20. After the airflow carrying the aerosol enters the first hollow channel 21a and the first airflow channel 21b respectively, it can be buffered in the first hollow channel 21a and the first airflow channel 21b. Since the thermal conductivity efficiency of the external airflow is relatively low (the thermal conductivity is about 0.03W / (m·K)), the external airflow can exchange heat and cool the aerosol, thereby better preventing the support segment 21 from collapsing and deforming at high temperatures, thereby ensuring that the support segment 21 can provide better support.

[0108] Furthermore, the aerosol generating article may further include a fragrance substance in the first air flow channel 21b.

[0109] The flavoring substance can flow out along with the airflow flowing through the first airflow channel 21b to compensate for the smoke flavor and enhance the smoking taste.

[0110] In addition, fragrance substances can also absorb a certain amount of heat. For example, fragrance substances can generally effectively absorb more than 50 joules of heat. Therefore, setting up fragrance substances can also better reduce the temperature of the aerosol.

[0111] In the aerosol generating product shown in Figures 4 and 5, when the aerosol generating matrix segment 10 is heated, the aerosol generating matrix segment 10 releases aerosol. Since at least some of the micropores or gaps in the wall material of the aerosol generating matrix segment 10 are connected to the airway 10a, the aerosol released by the aerosol generating matrix segment 10 when heated can enter the airway 10a through the micropores or gaps connected to the airway 10a. At the same time, the external airflow enters the airway 10a from the end of the aerosol generating matrix segment 10 away from the functional segment 20, and drives the aerosol to pass through the support tube, the second hollow channel 22a and the filter segment 23 in sequence, and finally flows into the user's mouth. Among them, when passing through the support tube, a part of the airflow carrying aerosol enters the first hollow channel 21 and is buffered in the first hollow channel 21, and the other part of the airflow carrying aerosol enters the first airflow channel 21b and is buffered in the first airflow channel 21b. Since the thermal conductivity efficiency of the external airflow is relatively low (the thermal conductivity is about 0.03W / (m·K)), the external airflow can exchange heat and cool the aerosol, thereby better preventing the support section 21 from collapsing and deforming at high temperatures, thereby ensuring that the support section 21 can provide better support.

[0112] In one embodiment, please refer to Figure 6, the cooling tube can be provided with a second air flow channel 22b, which is located on the peripheral side of the second hollow channel 22a (the structure of the cooling tube in Figure 6 can refer to the structure of the support tube shown in Figure 5), and runs through the opposite ends of the cooling tube along the first direction.

[0113] The number of the second air flow channel 22b can be one or more.

[0114] For example, the cooling tube may include a second outer layer, a second inner layer nested within the second outer layer, and a second corrugated layer connected between the second outer layer and the second inner layer. The second corrugated layer may have a wavy cross-section. The interior of the second inner layer may define a second hollow channel. The second outer layer, the second inner layer, and the second corrugated layer may collectively define a plurality of second airflow channels.

[0115] The support section 21 in Figure 6 is a support tube, and the second airflow channel 22b is connected to the first hollow channel 21a. In other words, part of the aerosol can flow from the first hollow channel 21a into the second airflow channel 22b.

[0116] That is to say, a second air flow channel 22b similar to the first air flow channel 21b can also be set on the cooling tube. After the air flow carrying aerosol enters the second hollow channel 22a and the second air flow channel 22b respectively, it can also be cached and cooled in the second hollow channel 22a and the second air flow channel 22b. Therefore, the cooling effect of the cooling tube can be further improved.

[0117] Likewise, fragrance substances may also be provided in the second air flow channel 22b.

[0118] In addition, it should be noted that although the cooling tube shown in Figure 4 is not provided with the second air flow channel 22b, and the support tube shown in Figure 6 is not provided with the first air flow channel 21b, in some embodiments, the functional section 20 may also be provided with a support tube having a first air flow channel 21b and a cooling tube having a second air flow channel 22b at the same time.

[0119] In the aerosol-generating article shown in FIG6 , when the aerosol-generating matrix segment 10 is heated, it releases aerosol. Because at least some of the micropores or gaps within the wall material of the aerosol-generating matrix segment 10 are connected to the airway 10a, the aerosol released by the heated aerosol-generating matrix segment 10 can enter the airway 10a through the micropores or gaps connected to the airway 10a. Simultaneously, external airflow enters the airway 10a from the end of the aerosol-generating matrix segment 10 facing away from the functional segment 20, driving the aerosol sequentially through the first hollow passage 21a, the cooling tube, and the filter section 23, ultimately flowing into the user's oral cavity. While passing through the cooling tube, a portion of the aerosol-carrying airflow enters the second airflow passage 22b, where it is buffered and cooled, while another portion of the aerosol-carrying airflow enters the second airflow passage 22b, where it is buffered and cooled. This further enhances the cooling effect of the cooling tube.

[0120] In one embodiment, the support tube may further be provided with a metal coating 212. For example, refer to Figure 7. For the convenience of description, the tube wall of the support tube defining the first hollow channel 21a may be referred to as the first tube wall 211. At least one of the inner wall surface and the outer wall surface of the first tube wall 211 may be coated with the metal coating 212. That is, the metal coating 212 may be coated only on the inner wall surface of the first tube wall 211, or only on the outer wall surface of the first tube wall 211, or respectively on the inner wall surface and the outer wall surface of the first tube wall 211.

[0121] The metal coating 212 not only improves the supporting strength of the support tube, but also has good temperature resistance. Therefore, the metal coating 212 can effectively prevent the support tube from thermal collapse and deformation at high temperatures.

[0122] For example, the material of the metal coating 212 may be one of aluminum, copper, and tin, or a combination of at least two thereof.

[0123] In addition, since the metal coating 212 can provide better support and temperature resistance, when the cooling section 22 is a cooling tube, the cross-sectional size of the first hollow channel 21a of the support tube can be larger than the cross-sectional size of the second hollow channel 22a of the cooling tube. That is to say, the space inside the first hollow channel 21a is relatively large. Therefore, more aerosol can be accommodated in the first hollow channel 21a. While improving the ability of the support tube to cache aerosols, the efficiency of extracting aerosols can also be improved to a certain extent.

[0124] In some embodiments, the cooling tube may also be provided with a metal coating 212. For example, for ease of description, the tube wall of the cooling tube that defines the second hollow channel 22a may be referred to as the second tube wall, and at least one of the inner wall surface and the outer wall surface of the second tube wall may be coated with a metal coating 212.

[0125] In the aerosol-generating article shown in FIG7 , when the aerosol-generating matrix segment 10 is heated, it releases aerosol. Because at least some of the micropores or gaps within the wall material of the aerosol-generating matrix segment 10 are connected to the airway 10a, the aerosol released by the heated aerosol-generating matrix segment 10 can enter the airway 10a through the micropores or gaps connected to the airway 10a. Simultaneously, external airflow enters the airway 10a from the end of the aerosol-generating matrix segment 10 facing away from the functional segment 20, driving the aerosol sequentially through the first hollow channel 21a, the second hollow channel 22a, and the filter segment 23, ultimately flowing into the user's oral cavity. The support tube is provided with a metal coating 212. The metal coating 212 not only improves the support strength of the support tube but also has good temperature resistance. Therefore, the metal coating 212 can effectively prevent the support tube from thermal collapse and deformation at high temperatures. At the same time, the cross-sectional size of the first hollow channel 21a of the support tube in Figure 7 is larger than the cross-sectional size of the second hollow channel 22a of the cooling tube. The first hollow channel 21a can accommodate more aerosol, which not only improves the ability of the support tube to cache aerosols, but also improves the efficiency of aerosol extraction to a certain extent.

[0126] In other embodiments, the cross-sectional dimension of the first hollow channel 21a may also be smaller than the cross-sectional dimension of the second hollow channel 22a of the cooling tube, or the cross-sectional dimension of the first hollow channel 21a may also be equal to the cross-sectional dimension of the second hollow channel 22a of the cooling tube.

[0127] In one embodiment, referring to FIG. 8 and FIG. 9 , the support tube may further be provided with a partition 213 , which is disposed in the first hollow channel 21 a to separate the first hollow channel 21 a into a plurality of third air flow channels 21 c .

[0128] The separator 213 can not only improve the supporting strength of the support tube to better prevent the support tube from thermal collapse and deformation at high temperatures, but also filter and screen the condensate formed by the aerosol or large particles in the aerosol to relieve the filtration pressure of the filtration section 23. It can also prevent the aerosol-generating matrix section 10 from shrinking due to heat and falling into the support tube or the cooling section 22, thereby better improving the user experience.

[0129] In the aerosol-generating article shown in Figures 8 and 9 , when the aerosol-generating matrix segment 10 is heated, it releases aerosol. Because at least some of the micropores or gaps within the wall material of the aerosol-generating matrix segment 10 are connected to the airway 10a, the aerosol released by the heated aerosol-generating matrix segment 10 can enter the airway 10a through the micropores or gaps connected to the airway 10a. Simultaneously, external airflow enters the airway 10a from the end of the aerosol-generating matrix segment 10 facing away from the functional segment 20, carrying the aerosol sequentially through the support tube, the second hollow channel 22a, and the filter segment 23, ultimately flowing into the user's oral cavity. While passing through the support tube, the airflow carrying the aerosol enters each of the third airflow channels 21c. The separator 213 can not only improve the supporting strength of the support tube to better prevent the support tube from thermal collapse and deformation at high temperatures, but also filter and screen the condensate formed by the aerosol or large particles in the aerosol to relieve the filtration pressure of the filtration section 23. It can also prevent the aerosol-generating matrix section 10 from shrinking due to heat and falling into the support tube or the cooling section 22, thereby better improving the user experience.

[0130] In some embodiments, a partition 213 may also be provided in the cooling tube. For example, the partition 213 may be provided in the second hollow channel 22a to separate the second hollow channel 22a into a plurality of fourth air flow channels.

[0131] In one embodiment, one of the supporting section 21 and the cooling section 22 may be a tubular structure, and the other may be a solid fiber structure.

[0132] The support section 21 in FIG10 is a solid fiber structure. For example, the support section 21 may be solid acetate fiber or solid PET. The cooling section 22 is a cooling tube.

[0133] In the aerosol-generating product shown in FIG10 , when the aerosol-generating matrix segment 10 is heated, the aerosol-generating matrix segment 10 releases aerosol. Since at least some of the micropores or gaps in the wall material of the aerosol-generating matrix segment 10 are connected to the airway 10a, the aerosol released by the heated aerosol-generating matrix segment 10 can enter the airway 10a through the micropores or gaps connected to the airway 10a. Simultaneously, external airflow enters the airway 10a from the end of the aerosol-generating matrix segment 10 facing away from the functional segment 20, driving the aerosol through the support segment 21, the second hollow channel 22a, and the filter segment 23 in sequence, and finally into the user's oral cavity. The support segment 21 is a solid fiber structure. While providing support, the solid fiber structure can also perform directionally filtering of the aerosol to remove harmful components therein and adjust the draw resistance, thereby effectively preventing the aerosol-generating product from causing puffing voids due to insufficient draw resistance, thereby affecting the puffing experience.

[0134] In other embodiments, the supporting section 21 may be a supporting tube, and the cooling section 22 may be a solid fiber structure.

[0135] When the supporting section 21 or the cooling section 22 is a solid fiber structure, the solid fiber structure can also provide an absorption resistance of 100Pa to 350Pa (including endpoint values). For example, the absorption resistance of the solid fiber structure can be 100Pa, 150Pa, 170Pa, 200Pa, 230Pa, 260Pa, 280Pa, 320Pa, 350Pa, etc.

[0136] In one embodiment, referring to FIG. 11 and FIG. 12 , a portion of the outer wall of the cooling tube may be recessed to form a groove 22 c , and the groove 22 c passes through two opposite ends of the cooling tube along the first direction.

[0137] The number of the groove 22c may be one or more.

[0138] The groove 22c can increase the contact area between the aerosol and the cooling tube, reduce the flow rate of the aerosol, and be more conducive to lowering the temperature of the aerosol.

[0139] In addition, flavoring substances may also be provided in the groove 22c.

[0140] In the aerosol generating product shown in Figures 11 and 12, when the aerosol generating matrix segment 10 is heated, the aerosol generating matrix segment 10 releases aerosol. Since at least some of the micropores or gaps in the wall material of the aerosol generating matrix segment 10 are connected to the airway 10a, the aerosol released by the aerosol generating matrix segment 10 when heated can enter the airway 10a through the micropores or gaps connected to the airway 10a. At the same time, the external airflow enters the airway 10a from the end of the aerosol generating matrix segment 10 away from the functional segment 20, and drives the aerosol to pass through the first hollow channel 21a, the cooling tube and the filter segment 23 in sequence, and finally flows into the user's mouth. Among them, when passing through the cooling tube, a part of the airflow carrying aerosol enters the second airflow channel 22b and is buffered and cooled in the second airflow channel 22b, and the other part of the airflow carrying aerosol enters the groove 22c and is buffered and cooled in the groove 22c, thereby further improving the cooling effect of the cooling tube.

[0141] In other embodiments, a portion of the outer side wall of the support tube may also be recessed to form a groove, and the groove runs through two opposite ends of the support tube along the first direction.

[0142] In the description of this application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine different embodiments or examples described in this application and features of different embodiments or examples, unless they are mutually inconsistent.

[0143] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. An aerosol generating article comprising: an aerosol generating substrate segment, wherein the aerosol generating substrate segment has at least one air channel therein, and the air channel runs through at least one of two opposite ends of the aerosol generating substrate segment along a first direction; A functional segment is arranged at one end of the aerosol generating matrix segment along a first direction, and the functional segment is provided with a supporting segment, a cooling segment and a filtering segment arranged in sequence along the first direction, and the supporting segment is located between the aerosol generating matrix segment and the cooling segment.

2. An aerosol generating article according to claim 1, wherein at least one of the supporting section and the cooling section is a tubular structure.

3. An aerosol-generating article according to claim 2, wherein the tubular structure is a fiber tube or a metal tube.

4. The aerosol generating article according to claim 2 or 3, wherein the support section is a support tube having a first hollow channel, and the cooling section is a cooling tube having a second hollow channel; The outer dimensions of the cross section of the support tube are the same as the outer dimensions of the cross section of the cooling tube; and / or, The cross-sectional dimension of the first hollow channel is smaller than or equal to the cross-sectional dimension of the second hollow channel.

5. The aerosol generating article according to claim 2 or 3, wherein the support section is a support tube having a first hollow channel and a first airflow channel, wherein the first airflow channel is located at a peripheral side of the first hollow channel and passes through opposite ends of the support tube along the first direction; and / or, The cooling section is a cooling tube having a second hollow channel and a second air flow channel. The second air flow channel is located around the second hollow channel and runs through two opposite ends of the cooling tube along the first direction.

6. The aerosol generating article according to claim 5, wherein the support section is the support tube; The support tube includes a first outer circular layer, a first inner circular layer sleeved in the first outer circular layer, and a first corrugated layer connected between the first outer circular layer and the first inner circular layer, wherein the cross section of the first corrugated layer is wavy; the interior of the first inner circular layer is a first hollow channel, and the first outer circular layer, the first inner circular layer and the first corrugated layer jointly define a plurality of the first airflow channels; and / or, The aerosol-generating article further comprises a flavourant disposed within the first airflow channel.

7. The aerosol generating article according to claim 5, wherein the cooling section is the cooling tube; The cooling tube includes a second outer circular layer, a second inner circular layer sleeved in the second outer circular layer, and a second corrugated layer connected between the second outer circular layer and the second inner circular layer, the cross-section of the second corrugated layer is wavy; the interior of the second inner circular layer is a second hollow channel, the second outer circular layer, the second inner circular layer and the second corrugated layer jointly define a plurality of second airflow channels; and / or the aerosol generating product also includes a fragrance substance arranged in the second airflow channel.

8. The aerosol generating article according to claim 2 or 3, wherein the support section is a support tube having a first hollow channel, a portion of the outer side wall of the support tube is recessed to form a groove, and the groove runs through opposite ends of the support tube along the first direction; and / or, The cooling section is a cooling tube having a second hollow channel, and a portion of the outer wall of the cooling tube is recessed to form a groove, and the groove runs through two opposite ends of the cooling tube along the first direction.

9. According to the aerosol generating product according to claim 2 or 3, the supporting section is a supporting tube having a first hollow channel, the supporting tube includes a first tube wall and a metal coating, the first tube wall defines the first hollow channel, and at least one of the inner wall surface and the outer wall surface of the first tube wall is coated with the metal coating. 10 . The aerosol generating article according to claim 9 , wherein the metal coating is made of one of aluminum, copper and tin, or a combination of at least two of them.

11. The aerosol generating article according to claim 9, wherein the cooling section is a cooling tube having a second hollow channel, and the cross-sectional size of the first hollow channel is equal to or unequal to the cross-sectional size of the second hollow channel.

12. According to the aerosol generating product according to claim 2 or 3, the supporting section is a supporting tube having a first hollow channel, the supporting tube includes a first tube wall and a partition, the first tube wall defines the first hollow channel, and the partition is arranged in the first hollow channel to separate the first hollow channel into a plurality of third airflow channels.

13. An aerosol generating article according to claim 2 or 3, wherein one of the support section and the temperature reduction section is the tubular structure, and the other is a solid fiber structure.

14. An aerosol-generating article according to any one of claims 1 to 3, wherein the filter segment is a solid fiber structure or a porous structure.

15. According to the aerosol generating product according to any one of claims 1-3, the aerosol generating matrix segment, the supporting segment, the cooling segment and the filtering segment are coaxially arranged cylinders and the aerosol generating matrix segment is an integrated structure, and the first direction is the axial direction of the aerosol generating matrix segment, the supporting segment, the cooling segment and the filtering segment.

16. The aerosol-generating article according to any one of claims 1 to 3, further comprising an outer wrapping layer, wherein the outer wrapping layer is coated on the outer peripheral side of the aerosol-generating substrate segment and the functional segment.

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