Aerosol generating product and aerosol generating device

Abstract

Embodiments of the present application provide an aerosol generating product and an aerosol generating device. The aerosol generating product comprises a medium segment and a function segment; the function segment is arranged at one end of the medium segment in a first direction; the function segment includes a cooling segment and a filtering segment; the cooling segment is located between the filtering segment and the medium segment; the medium segment and the filtering segment are both of an integrated structure; at least one first air channel hole is formed in the medium segment; and at least one second air channel hole is formed in the filtering segment. The medium segment and the filtering segment of the aerosol generating product provided by the embodiments of the present application are both of an integrated structure, at least one first air channel hole is formed in the medium segment, and at least one second air channel hole is formed in the filtering segment, so that the porosity of the medium segment and the porosity of the filtering segment can be controlled; and the vaping resistance of the aerosol generating product can be adjusted by controlling the porosity of the medium segment and the porosity of the filtering segment. In addition, the porosity of the integrated structure is stable, so that the consistency of vaping resistance of the aerosol generating product can be improved.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] The present application claims priority to Chinese Patent Application No. 202310928585.2, filed on July 26, 2023, the contents of which are hereby incorporated by reference in its entirety.TECHNICAL FIELD

[0002] The present application relates to the technical field of smoking articles, and in particular to an aerosol generating article and an aerosol generating device.BACKGROUND

[0003] Smoking articles include smoking articles which form an aerosol by ignition, and smoking articles which form an aerosol by heating without combustion. In a typical smoking article by heating without combustion, it includes an aerosol generating substrate that can volatilize upon heating to generate an aerosol, and a filtering segment that cooperates with the aerosol generating substrate to achieve inhalation of the aerosol. The aerosol generating substrate is heated by an external heat source so that the aerosol generating substrate is heated just enough to emit a flavor, and the aerosol generating substrate will not burn but is loaded with an aerosol forming agent. In use, the aerosol forming agent is released by heating through a high temperature to form a smoke.

[0004] In the related art, a structure of the aerosol generating substrate is quite different from a structure of the filtering segment. For example, the aerosol substrate is wrapped around dispersed plant leaf shreds, and the filtering segment is made of vinegar fiber or material. The inhalation resistance of the smoking article is adjusted by the respective porosities of the aerosol generating substrate and the filtering segment, and the porosity of the dispersed structure is unstable, which affects the consistency of the inhalation resistance of the smoking article.SUMMARY

[0005] In view of this, it is desirable to provide an aerosol generating article and an aerosol generating device which can improve the consistency of the inhalation resistance.

[0006] In order to achieve the above object, an embodiment of the present application provides an aerosol generating article, including a substrate segment and a functional segment. The functional segment is arranged at an end of the substrate segment in a first direction, the functional segment includes a cooling segment and a filtering segment, the cooling segment is located between the filtering segment and the substrate segment, and each of the substrate segment and the filtering segment is an integrated structure.

[0007] At least one first air passage hole is arranged inside the substrate segment, the first air passage hole penetrates through at least one end of the substrate segment in the first direction, at least one second air passage hole is arranged inside the filtering segment, and the second air passage hole penetrates through at least one end of the filtering segment in the first direction.

[0008] In an embodiment, the substrate segment, the cooling segment and the filtering segment are separable from each other.

[0009] In an embodiment, in a plane perpendicular to the first direction of the aerosol generating article, a sum of cross-sectional areas of all first air passage holes is greater than or equal to a sum of cross-sectional areas of all second air passage holes.

[0010] In an embodiment, a number of the first air passage holes is less than or equal to a number of the second air passage holes.

[0011] In an embodiment, in a plane perpendicular to the first direction of the aerosol generating article, a cross-sectional area of a single first air passage hole is greater than or equal to a cross-sectional area of a single second air passage hole.

[0012] In an embodiment, a hydraulic diameter of a single first air passage hole is greater than or equal to a hydraulic diameter of a single second air passage hole.

[0013] In an embodiment, at least one cavity is arranged inside the aerosol generating article.

[0014] In an embodiment, the substrate segment and the cooling segment are spaced apart from each other to define the cavity.

[0015] In an embodiment, the filtering segment and the cooling segment are spaced apart from each other to define the cavity.

[0016] In an embodiment, the cavity is arranged at least at an end of the substrate segment away from the cooling segment.

[0017] In an embodiment, the cavity is arranged at least at an end of the filtering segment away from the cooling segment.

[0018] In an embodiment, a passage is arranged inside the cooling segment and penetrates through two ends of the cooling segment in the first direction, a corrugated structure is arranged between a side wall of the passage and an outer side wall of the cooling segment, and the corrugated structure extends in the first direction of the cooling segment.

[0019] In an embodiment, a groove is formed on a circumferential outer surface of the cooling segment, and the groove spans across two opposite ends of the cooling segment in the first direction.

[0020] In an embodiment, the cooling segment is one of a hollow vinegar fiber structure, a solid vinegar fiber structure, or a hollow paper tube.

[0021] In an embodiment, inhalation resistance of the substrate segment is less than or equal to inhalation resistance of the filtering segment.

[0022] In an embodiment, the inhalation resistance of the substrate segment ranges from 10 Pa to 100 Pa.

[0023] In an embodiment, the inhalation resistance of the filtering segment ranges from 50 Pa to 300 Pa.

[0024] In an embodiment, inhalation resistance of the aerosol generating article ranges from 500 Pa to 1100 Pa.

[0025] In an embodiment, the substrate segment, the cooling segment and the filtering segment are cylinders and arranged coaxially, and the first direction is an axial direction of the substrate segment, the cooling segment and the filtering segment.

[0026] An embodiment of the present application also provides an aerosol generating device for use with the aerosol generating article described above. The aerosol generating device includes a heating member configured to heat the substrate segment to generate an aerosol.

[0027] An embodiment of the present application provides an aerosol generating article. The aerosol generating article includes a substrate segment and a functional segment. The functional segment is arranged at an end of the substrate segment in the first direction. The functional segment includes a cooling segment and a filtering segment, and the cooling segment is located between the filtering segment and the substrate segment. The substrate segment will generate an aerosol when heated. The cooling segment is configured to cool the aerosol to reduce the temperature of the aerosol, which can improve the phenomenon of "scalding the mouth" when the user inhales the aerosol. The filtering segment is configured to filter the aerosol after the cooling segment.

[0028] Each of the substrate segment and the filtering segment of the aerosol generating article provided by the embodiment of the present application is an integrated structure formed by the extrusion molding. At least one first air passage hole is arranged inside the substrate segment and at least one second air passage hole is arranged inside the filtering segment, which is beneficial to controlling the porosity of the substrate segment and the porosity of the filtering segment. The porosity of the substrate segment and the porosity of the filtering segment are controlled, which is beneficial to adjusting the inhalation resistance rate of the aerosol generating article, thereby satisfying the sensory characteristics of the user such as the natural and smooth inhalation, smoke penetration and comfort during the inhalation process. In addition, since each of the substrate segment and the filtering segment is an integrated structure, and the porosity of the integrated structure is relatively stable, the uniformity of the inhalation resistance of the aerosol generating article can be improved.

[0029] In addition, the first air passage holes can increase the surface area of the substrate segment, facilitate the heat transfer, and improve the heating efficiency. The second air passage hole is arranged inside the filtering segment in the form of the integrated structure, which is beneficial to achieving the targeted filtration of the aerosol, and improving the on-demand delivery and transfer of effective ingredients of the aerosol. In addition, it solves the problem that the filtering segment in the related art filters the aerosol through a physical tow pore diameter and the like resulting in a part of the effective ingredients being filtered.BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG. 1 is a schematic diagram of an aerosol generating article according to an embodiment of the present application. FIG. 2 is a cross-sectional view of the aerosol generating article shown in FIG. 1, in which dashed arrows indicate a direction of flow of airflow in the aerosol generating article. FIG. 3 is a schematic cross-sectional view of an aerosol generating article according to a second embodiment of the present application. FIG. 4 is a schematic cross-sectional view of an aerosol generating article according to a third embodiment of the present application. FIG. 5 is a schematic cross-sectional view of an aerosol generating article according to a fourth embodiment of the present application. FIG. 6 is a schematic cross-sectional view of an aerosol generating article according to a fifth embodiment of the present application. FIG. 7 is a schematic cross-sectional view of an aerosol generating article according to a sixth embodiment of the present application. FIG. 8 is a schematic cross-sectional view of an aerosol generating article according to a seventh embodiment of the present application. FIG. 9 is a schematic cross-sectional view of an aerosol generating article according to an eighth embodiment of the present application. FIG. 10 is a schematic diagram of a cooling segment shown in FIG. 6. FIG. 11 is a schematic cross-sectional view of a groove according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] It should be noted that embodiments and features in the embodiments of the present application may be combined with each other without conflict, and the detailed description should be understood as an explanation of the present application and should not be regarded as an undue limitation of the present application.

[0032] In the description of the present application, orientation or positional relationships indicated by the term "first direction" are based on orientation or positional relationships shown in FIG. 1 and FIG. 2 and are merely for convenience of describing the present application and simplification of the description, and do not indicate or imply that the referred device or element must have a particular orientation and must be constructed and operated in a particular orientation, and therefore cannot be construed as a limitation of the embodiments of the present application.

[0033] An embodiment of the present application provides an aerosol generating article. Referring to FIG. 1 to FIG. 9, the aerosol generating article includes a substrate segment 10 and a functional segment 20.

[0034] It should be noted that the aerosol generating article 100 generates an aerosol through the substrate segment 10, and the functional segment 20 is not configured to generate an aerosol.

[0035] It should be noted that the aerosol generating article 100 according to the embodiment of the present application may be adapted to be inhaled by ignition, or may also be adapted to be inhaled by heating without combustion. In the embodiment of the present application, an example in which the aerosol generating article 100 is adapted to be inhaled by heating without combustion is described.

[0036] The aerosol generating article 100 is intended for use with an aerosol generating device.

[0037] The substrate segment 10 is configured to generate an aerosol for inhalation by a user when it is heated.

[0038] In the embodiment of the present application, the substrate segment 10 is substantially columnar shape. The columnar shape may be a cylindrical shape (i.e., a circular cross-sectional shape), a prismatic shape (i.e., a polygonal cross-sectional shape), an elliptical cylindrical shape (i.e., an elliptical cross-sectional shape), or the like, and is not limited herein.

[0039] The functional segment 20 includes a cooling segment 21 and a filtering segment 22, and the cooling segment 21 is located between the filtering segment 22 and the substrate segment 10. The cooling segment 21 is configured to cool the aerosol to reduce the temperature of the aerosol, which can improve the phenomenon of "scalding the mouth" when the user inhales the aerosol. The filtering segment 22 is configured to filter the aerosol after the cooling segment 21. It can be understood that since the aerosol flows through the filtering segment, the filtering segment also has the function of further cooling the aerosol.

[0040] In an example, the substrate segment 10, the cooling segment 21 and the filtering segment 22 are separable from each other, and are not connected together by mechanical structures, physical structures or adhesives, but two of them may be in contact with each other. That is, the substrate segment 10, the cooling segment 21 and the filtering segment 22 are combined structures. In this way, different substrate segments 10 and different filtering segments 22 can be reasonably combined to meet different inhalation needs of customers.

[0041] Each of the substrate segment 10 and the filtering segment 22 is an integrated structure. In an embodiment, the substrate segment 10 is an integrated structure formed by extrusion molding, and the filtering segment 22 is also an integrated structure formed by extrusion molding. That is, the substrate segment 10 and the filtering segment 22 are manufactured using the same process. Compared with the related art in which the substrate segment and the filtering segment adopt different processes for production and manufacture, the substrate segment and the filtering segment adopt the same process for production and manufacture, which can improve the production efficiency of the aerosol generating article.

[0042] In other embodiments, the substrate segment 10 and the filtering segment may also be an integrated structure formed by processes such as the injection molding and the die casting.

[0043] Exemplarily, referring to FIG. 2 to FIG. 9, at least one first air passage hole 10a is arranged inside the substrate segment 10, and the first air passage hole 10a penetrates through at least one end of the substrate segment 10 in the first direction. That is, the first air passage hole 10a extends in the first direction of the substrate segment 10.

[0044] It should be noted that the number of the first air passage holes 10a is not limited, and there may be one first air passage hole 10a or a plurality of first air passage holes 10a.

[0045] It should be noted that in the embodiments of the present application, the plurality means that the number is two or more.

[0046] The fact that the first air passage hole 10a penetrates through at least one end of the substrate segment 10 in the first direction means that the first air passage hole 10a may penetrate through two opposite ends of the substrate segment 10 in the first direction (referring to FIG. 2 to FIG. 9), and airflow may flow from one end of the substrate segment 10 in the first direction to another end of the substrate segment 10 in the first direction through the first air passage hole 10a.

[0047] Certainly, an end of the first air passage hole 10a may penetrate through the end surface of the substrate segment 10 in the first direction, and another end of the first air passage hole 10a may be a blind end. The first air passage holes 10a may penetrate through the same end of the substrate segment 10 in the first direction. In other embodiments, some of the first air passage holes 10a may penetrate through an end of the substrate segment 10 in the first direction, and some others of the first air passage holes 10a may penetrate through another end of the substrate segment 10 in the first direction.

[0048] It can be understood that, compared with the arrangement that the first air passage hole 10a penetrates through an end of the substrate segment 10 in the first direction, the arrangement that the first air passage hole 10a penetrates through two ends of the substrate segment 10 in the first direction is more conducive to reducing the inhalation resistance for the user.

[0049] The first air passage holes 10a can increase the surface area of the substrate segment 10, facilitate the heat transfer, and improve the heating efficiency. The aerosol in the first air passage hole 10a is delivered to an inhalation end under the action of an inhalation negative pressure. The first air passage hole 10a can reduce the inhalation resistance for the user and improve the user experience. It should be noted that the inhalation resistance is positively correlated with the flow resistance of the aerosol. The smaller the flow resistance of the aerosol in the substrate segment 10, the smaller the inhalation resistance experienced by the user, and the larger the flow resistance of the aerosol in the substrate segment 10, the larger the inhalation resistance experienced by the user.

[0050] It should be noted that the substrate segment 10 is a particle combination, and micropores are formed between particles of the particle combination. That is, gaps between the particles constitute micropores. The micropores communicate with each other and form micro air passages communicating with the first air passage holes 10a.

[0051] The first air passage holes 10a and the micro air passages can increase the surface area of the substrate segment 10, facilitate the heat transfer, and improve the heating efficiency. The substrate in the substrate segment 10 is heated to release the aerosol, the aerosol is collected into the first air passage holes 10a through the gaps between the wall materials or the micro air passages, the aerosol released by the aerosol form substrate exposed to the first air passage holes 10a (that is, the aerosol form substrate located on inner wall surfaces of the first air passage holes 10a) can be directly released to the first air passage holes 10a, and the aerosol between adjacent first air passage holes 10a can also be mutually circulated in the micro air passages and delivered to the inhalation end under the action of the inhalation negative pressure.

[0052] Exemplarily, referring to FIG. 2 to FIG. 9, at least one second air passage hole 22a is arranged inside the filtering segment 22, and the second air passage hole 22a penetrates through at least one end of the filtering segment 22 in the first direction. That is, the second air passage hole 22a extends in the first direction of the filtering segment 22.

[0053] The arrangement of the second air passage hole 22a increases the contact area between the filtering segment 22 and the airflow, so that the filtering segment 22 can better absorb impurities trapped in the airflow, which can improve the filtering effect, thereby improving the user experience. In addition, by controlling the design parameters of the second air passage hole 22a, it is convenient to adjust the inhalation resistance.

[0054] It should be noted that the number of the second air passage holes 22a is not limited, and there may be one second air passage hole 22a or a plurality of second air passage holes 22a.

[0055] The fact that the second air passage hole 22a penetrates through at least one end of the filtering segment 22 in the first direction means that the second air passage hole 22a may penetrate through two opposite ends of the filtering segment 22 in the first direction (referring to FIG. 2 to FIG. 9), and airflow may flow from one end of the filtering segment 22 in the first direction to another end of the filtering segment 22 in the first direction through the second air passage hole 22a.

[0056] Certainly, an end of the second air passage hole 22a may penetrate through the end surface of the filtering segment 22 in the first direction, and another end of the second air passage hole 22a may be a blind end. The second air passage holes 22a may penetrate through the same end of the filtering segment 22 in the first direction. In other embodiments, some of the second air passage holes 22a may penetrate through an end of the filtering segment 22 in the first direction, and some others of the second air passage holes 22a may penetrate through another end of the filtering segment 22 in the first direction.

[0057] It can be understood that, compared with the arrangement that the second air passage hole 22a penetrates through an end of the filtering segment 22 in the first direction, the arrangement that the second air passage hole 22a penetrates through two ends of the filtering segment 22 in the first direction is more conducive to reducing the inhalation resistance for the user.

[0058] It should be noted that the first air passage hole 10a and the second air passage hole 22a described above is a hole in a macroscopic sense, the micropore is a hole in a microscopic sense, and each of the cross-sectional area of the first air passage hole 10a and each of the cross-sectional area of the second air passage hole 22a is much greater than the cross-sectional area of the micropore. The dimensions of the micropores are determined by the gaps between the particles.

[0059] The filtering segment 22 is an integrated structure, at least one second air passage hole 22a is arranged inside the filtering segment 22, and the second air passage hole 22a penetrates through at least one end of the filtering segment 22 in the first direction. The filtering segment 22 with a porous structure formed in this way can adjust the inhalation resistance of cigarettes and target filter harmful components (such as carbon monoxide, tar, and the like) of the aerosol.

[0060] In an example, the substrate segment 10 is a particle combination, also referred to as a powder combination, which is a reconstituted tobacco substrate, for example, a reconstituted tobacco substrate containing ingredients such as smoking agents, tobacco, and the like. The substrate segment 10 is an integrated structure, and can be formed as an integrated structure, for example, by an extrusion molding. The extrusion molding refers to a processing method in which a raw material mixture is added into an extruder, is is plasticized by heat and pushed forward by a screw through an action between a barrel and the screw of the extruder, and continuously passes through a die arranged at a discharge port of the extruder, to produce various cross-sectional articles or semi-finished articles. The substrate structure formed by the extrusion molding is in the shape of a strip. In this way, the substrate segment 10 is an integrated substrate after it is heated and inhaled or heating is stopped, and the phenomenon of disintegration and falling is not easy to occur, thus solving the problems such as flake loosening, filamentous components and particle components falling off, difficulty in cleaning, and uneven components in the flaky, filamentous or loose particle substrate segment 10 in the related art.

[0061] The filtering segment 22 can be made of a filter material, such as a high polymer material such as acetate fiber material or PET, and a porous material is made of a plastic material that is easily degradable. The filtering segment 22 is an integrated structure. The filtering segment 22 formed in this way has the technical effect of adjusting the inhalation resistance and target filtering the harmful components (carbon monoxide, tar, and the like) of the aerosol.

[0062] In an example, referring to FIG. 1 to FIG. 9, the aerosol generating article 100 includes a wrapping layer 30, and the wrapping layer 30 wraps around the circumferential exterior of the functional segment 20 and the circumferential exterior of the substrate segment 10.

[0063] The wrapping layer 30 can play a certain protective role on the substrate segment 10, and reduce the surface area of the substrate segment 10 directly exposed to the outside world, thereby reducing the probability of the substrate segment 10 being deteriorated by moisture due to contact with the air, and in addition, reducing the probability of the contamination due to the contact between the substrate segment 10 and other components in the aerosol generating device.

[0064] It should be noted that the substrate segment 10 and the wrapping layer 30 may be an integrated structure. That is, the substrate segment 10 and the wrapping layer 30 are different portions of the integrated structure. In this way, on the one hand, the relative position of the substrate segment 10 and the wrapping layer 30 is fixed, which can reduce the probability of separation of the substrate segment 10 and the wrapping layer 30 due to factors such as the temperature change and vibration during use of the aerosol generating article 100. On the other hand, the substrate segment 10 and the wrapping layer 30 can be manufactured simultaneously, thereby reducing the manufacturing operations and improving the production efficiency.

[0065] For example, the integrated structure of the substrate segment and the wrapping layer 30 is formed through a co-extrusion process.

[0066] Certainly, the substrate segment 10 and the wrapping layer 30 may also be separable from each other.

[0067] An embodiment of the present application also provides an aerosol generating device for use in conjunction with the aerosol generating article provided by the embodiments of the present application. The aerosol generating device includes a heating member (not shown) configured to heat the substrate segment 10 to generate an aerosol.

[0068] Specifically, the aerosol generating device includes a housing and a power supply component disposed in the housing, the housing is provided with an accommodating bin, and an electric energy output part of the power supply component is disposed in the accommodating bin or around a side wall of the accommodating bin. When a portion of the aerosol generating article 100 corresponding to the extent in which the substrate segment 10 is located in the first direction is inserted into the accommodating bin, the electric energy output part transmits the electric energy to the heating member in a contact or non-contact manner, and the heating member receives energy from the outside to generate heat, to heat the substrate segment 10 to generate the aerosol.

[0069] In the embodiment of the present application, the first direction does not specifically refer to a direction in which the external profile of the substrate segment 10 is the longest. Specifically, an arrangement direction of the functional segment 20 and the substrate segment 10 is consistent with the first direction; and a direction in which the aerosol generating article 100 is inserted into the accommodating bin and a direction in which the aerosol generating article 100 is withdrawn from the accommodating bin are parallel to the first direction. The length of the substrate segment 10 in the first direction may be longer than, shorter than, or the same as the length thereof in the other directions.

[0070] For example, when the external profile of the substrate segment 10 is cylindrical, the first direction is an axial direction of the substrate segment 10. It should be noted that even if the axial length of the substrate segment 10 is less than the diameter thereof, the first direction of the substrate segment 10 is still the axial direction. For another example, when the external profile of the substrate segment 10 is a cuboid, the first direction is still the direction defined above, that is, the arrangement direction of the functional segment 20 and the substrate segment 10 or the direction in which the aerosol generating article 100 is withdrawn from and placed into the accommodating bin, and the first direction of the substrate segment 10 may be any of the length direction, the width direction and the height direction of the cuboid.

[0071] An embodiment of the present application provides an aerosol generating article 100. The aerosol generating article 100 includes a substrate segment 10 and a functional segment 20. The functional segment 20 is arranged at an end of the substrate segment 10 in the first direction. The functional segment 20 includes a cooling segment 21 and a filtering segment 22, and the cooling segment 21 is located between the filtering segment 22 and the substrate segment 10. The substrate segment 10 will generate an aerosol when heated. The cooling segment 21 is configured to cool the aerosol to reduce the temperature of the aerosol, which can improve the phenomenon of "scalding the mouth" when the user inhales the aerosol. The filtering segment 22 is configured to filter the aerosol after the cooling segment 21.

[0072] Each of the substrate segment 10 and the filtering segment 22 of the aerosol generating article 100 provided by the embodiment of the present application is an integrated structure formed by the extrusion molding. At least one first air passage hole 10a is arranged inside the substrate segment 10 and at least one second air passage hole 22a is arranged inside the filtering segment 22, which is beneficial to controlling the porosity of the substrate segment 10 and the porosity of the filtering segment 22. The porosity of the substrate segment 10 and the porosity of the filtering segment 22 are controlled, which is beneficial to adjusting the inhalation resistance rate of the aerosol generating article 100, thereby satisfying the sensory characteristics of the user such as the natural and smooth inhalation, smoke penetration and comfort during the inhalation process. In addition, since each of the substrate segment 10 and the filtering segment 22 is an integrated structure, and the porosity of the integrated structure is relatively stable, the uniformity of the inhalation resistance of the aerosol generating article 100 can be improved.

[0073] In addition, the first air passage holes 10a can increase the surface area of the substrate segment 10, facilitate the heat transfer, and improve the heating efficiency. The second air passage hole 22a is arranged inside the filtering segment 22 in the form of the integrated structure, which is beneficial to achieving the targeted filtration of the aerosol, and improving the on-demand delivery and transfer of effective ingredients of the aerosol. In addition, it solves the problem that the filtering segment 22 in the related art filters the aerosol through a physical tow pore diameter and the like resulting in a part of the effective ingredients being filtered.

[0074] The specific components of the substrate segment 10 are not limited herein. Exemplarily, in an embodiment, the substrate segment 10 may include plant ingredients, auxiliary agent ingredients, smoking agent ingredients, adhesive ingredients, flavor ingredients, and the like.

[0075] The plant ingredients are configured to generate an aerosol when heated. The auxiliary agent ingredients are configured to provide skeletal support for the plant ingredients. The smoking agent ingredients are configured to generate smoke when heated. The adhesive ingredients are configured to bind the various raw ingredients. The flavor ingredients are configured to provide a characteristic aroma. In this way, the plant ingredients and the smoking agent ingredients can ensure the amount of the generated aerosol, while the flavor ingredients can improve the release of aroma during smoking and improve the user experience. The auxiliary agent ingredients can not only improve the fluidity of the mixed materials, but also make the aerosol generating substrate have a porous structure, to facilitate the extraction and flow of the aerosol. The adhesive ingredients ensure that the plant ingredients, the auxiliary agent ingredients and the like form a stable mixture, which avoids a loose structure.

[0076] Exemplarily, the plant ingredients may be one or more combinations of powders formed after a crushing treatment of tobacco raw materials, tobacco leaf fragments, tobacco stalks, tobacco powders, flavored plants, and the like. The plant ingredients are the core source of flavor, and endogenous substances in the plant ingredients can give users physiological satisfaction. The endogenous substances such as alkaloids enter the human bloodstream, and promote the generation of dopamine by the pituitary gland, thereby obtaining physiological satisfaction.

[0077] Exemplarily, the auxiliary agent ingredients may be one or more combinations of inorganic fillers, lubricants, and emulsifiers. The inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic fillers can provide skeleton support for the plant ingredients, and at the same time, the inorganic fillers are also provided with micropores, which can improve the porosity of the aerosol generating substrate, thereby increasing the release rate of the aerosol. The lubricants include one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricants can increase the fluidity of the plant ingredient powder, reduce the friction between the plant ingredient powder, make the overall density of the plant ingredient powder distribution more uniform, and also reduce the pressure required during the extrusion molding, and reduce the wear of the die opening 132. The emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. To a certain extent, the emulsifiers can slow down the loss of flavor substances during storage, increase the stability of the flavor substances and improve the sensory quality of products.

[0078] Exemplarily, the smoking agent ingredients may include one or more combinations of monohydric alcohol (such as menthol); polyol (such as propylene glycol, glycerol, triethylene glycol, 1, 3-butanediol and tetraethylene glycol); ester of polyol (such as glyceryl triacetate, triethyl citrate, glyceryl diacetate mixtures, triethyl citrate, benzyl benzoate, tributyrate); monocarboxylic acid; dicarboxylic acid; polycarboxylic acid (such as lauric acid, myristic acid) or aliphatic ester of polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1, 3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, glyceryl diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanilate, glyceryl tributyrate, lauryl acetate).

[0079] Exemplarily, the adhesive ingredients are in close contact with the component raw material interface by wetting together with the component raw material interface to create an intermolecular attractive force, thereby bonding to the component raw material, such as a powder, a liquid, or the like. The adhesive ingredients may be one or more combinations of natural plant extracts, non-ionized modified viscous polysaccharides including tamarind polysaccharides and guar gum, and modified cellulose (such as carboxymethyl cellulose). The adhesive is configured to bond the particles together, which are not easy to loosen, and the adhesive further improves the water resistance of the aerosol-generating substrate, and is harmless to the human body.

[0080] Exemplarily, the flavor ingredients are configured to provide characteristic aroma, such as hay aroma, roasted sweet aroma, solid or liquid substances of nicotine. The flavor ingredients may include one or more combinations of tobacco or other plants, flavored plant extracts, extractum, essential oils, absolute oils. The flavor ingredients may include a monomeric flavoring substance, for example, one or more combinations of macrotrienone, neophytadiene, geraniol, nerol, and the like.

[0081] It should be noted that the filtering segment 22 has a function of adjusting the inhalation resistance, and specifically, the filtering segment 22 can adjust the magnitude of the inhalation resistance by controlling parameters such as the number of second air passage holes 22a of the filtering segment 22, the hydraulic diameter of the second air passage holes 22a, and the cross-sectional area of the filtering segment 22.

[0082] In order to satisfy the sensory characteristics of the user such as the natural and smooth inhalation, smoke penetration, and comfort during the inhalation process, and improve the user experience, it is necessary to control the inhalation resistance range of the aerosol generating article 100. It should be noted that the inhalation resistance is positively correlated with the flow resistance of the aerosol. The smaller the flow resistance of the aerosol in the aerosol generating article 100, the smaller the inhalation resistance experienced by the user; and the larger the flow resistance of the aerosol in the aerosol generating article 100, the larger the inhalation resistance experienced by the user.

[0083] Exemplarily, the aerosol generating article 100 has inhalation resistance ranging from 500 Pa to 1100 Pa. For example, the inhalation resistance of the aerosol generating article is 500 Pa, 550 Pa, 600 Pa, 650 Pa, 700 Pa, 750 Pa, 800 Pa, 850 Pa, 900 Pa, 950 Pa, 1000 Pa, 1050 Pa, 1100 Pa, or the like.

[0084] When the inhalation resistance of the aerosol generating article 100 is greater than 1100 Pa, the flow resistance of the aerosol in the aerosol generating article 100 is larger, the first air passage hole 10a corresponding to the substrate segment 10 and the second air passage hole 22a corresponding to the filtering segment 22 are relatively smaller. This significantly increases the difficulty of the molding process, and it is not easy to control the dimensions of the first air passage hole 10a and the second air passage hole 22a, which increases the defective product rate of the substrate segment 10 and the filtering segment 22.

[0085] When the inhalation resistance of the aerosol generating article 100 is less than 500 Pa, the number of the first air passage holes 10a corresponding to the substrate segment 10 and the number of the second air passage holes 22a corresponding to the filtering segment 22 are small, the substrate segment 10 is prone to burning phenomenon, and the substrate segment 10 is prone to uneven release phenomenon of the aerosol during the heating process (for example, the first two inhalations release a large amount of aerosol and the last few inhalations release a small amount of aerosol), which affects the inhalation feeling of the user.

[0086] When the inhalation resistance of the aerosol generating article 100 ranges from 500 Pa to 1100 Pa, the flow resistance of the substrate segment 10 is relatively small (that is, the inhalation resistance is relatively small), the flow rate of the aerosol is appropriate, the aerosol inside the substrate segment 10 is easily extracted, the release of the aerosol is relatively uniform and the utilization rate is high, the substrate segment 10 is not easy to burn, the user experience is relatively high, and it is also convenient for the processing and manufacturing.

[0087] It can be understood that in order to ensure that the aerosol inside the substrate segment 10 is easily extracted, that the release of the aerosol is relatively uniform and the utilization rate is relatively high, that the substrate segment 10 is not easy to burn, and that it is also convenient for the processing and manufacturing of the substrate segment 10, it is necessary to determine the inhalation resistance of the substrate segment 10 in a certain range. In this way, the inhalation resistance of the aerosol generating article 100 can be adjusted by combining the inhalation resistance of the substrate segment 10 with the inhalation resistance of different filtering segments 22. For example, the inhalation resistance of the substrate segment 10 is less than or equal to the inhalation resistance of the filtering segment 22. In this way, while ensuring that the aerosol inside the substrate segment 10 is easily extracted, the release of the aerosol is relatively uniform and the utilization rate is relatively high, and the substrate segment 10 is not easy to burn, the sensory characteristics of the user such as the natural and smooth inhalation, smoke penetration, and comfort during the inhalation process are satisfied.

[0088] Preferably, the inhalation resistance of the substrate segment 10 is less than the inhalation resistance of the filtering segment 22.

[0089] Exemplarily, the substrate segment 10 has inhalation resistance ranging from 10 Pa to 100 Pa. For example, the inhalation resistance of the substrate segment 10 is 10 Pa, 15 Pa, 20 Pa, 25 Pa, 30 Pa, 35 Pa, 40 Pa, 45 Pa, 50 Pa, 55 Pa, 60 Pa, 65 Pa, 70 Pa, 75 Pa, 80 Pa, 85 Pa, 90 Pa, 95 Pa, 100 Pa, and the like.

[0090] Exemplarily, the filtering segment 22 has inhalation resistance ranging from 50 Pa to 300 Pa. For example, the inhalation resistance of the filtering segment 22 is 50 Pa, 55 Pa, 60 Pa, 65 Pa, 70 Pa, 75 Pa, 80 Pa, 85 Pa, 90 Pa, 95 Pa, 100 Pa, 110 Pa, 120 Pa, 130 Pa, 140 Pa, 150 Pa, 160 Pa, 170 Pa, 180 Pa, 190 Pa, 200 Pa, 210 Pa, 220 Pa, 230 Pa, 240 Pa, 250 Pa, 260 Pa, 270 Pa, 280 Pa, 290 Pa, 300 Pa, and the like.

[0091] It should be noted that the filtering segment 22 can adjust the magnitude of the inhalation resistance of the filtering segment 22 by controlling parameters such as the number of second air passage holes 22a of the filtering segment 22, the hydraulic diameter of the second air passage holes 22a, and the sum of the cross-sectional areas of all the second air passage holes 22a. The substrate segment 10 can adjust the magnitude of the inhalation resistance of the substrate segment 10 by controlling parameters such as the number of first air passage holes 10a of the substrate segment 10, the hydraulic diameter of the first air passage holes 10a, and the sum of the cross-sectional areas of all the first air passage holes 10a.

[0092] In this way, in order to control the inhalation resistance of the substrate segment 10 to be less than or equal to the inhalation resistance of the filtering segment 22, parameters such as the number of second air passage holes 22a of the filtering segment 22, the hydraulic diameter of the second air passage holes 22a, and the sum of the cross-sectional areas of all the second air passage holes 22a, and parameters such as the number of first air passage holes 10a of the substrate segment 10, the hydraulic diameter of the first air passage holes 10a, and the sum of the cross-sectional areas of all the first air passage holes 10a can be controlled.

[0093] Exemplarily, in a plane perpendicular to the first direction of the aerosol generating article 100, the sum of the cross-sectional areas of all the first air passage holes 10a is greater than or equal to the sum of the cross-sectional areas of all the second air passage holes 22a. In this way, the inhalation resistance of the substrate segment 10 is less than or equal to the inhalation resistance of the filtering segment 22.

[0094] It can be understood that the number of the first air passage holes 10a is the same as the number of the second air passage holes 22a, and the magnitude of the inhalation resistance of the substrate segment 10 and the magnitude of the inhalation resistance of the filtering segment 22 can be controlled by controlling the cross-sectional area of the first air passage hole 10a (i.e., the hydraulic diameter of the first air passage hole 10a) and by controlling the cross-sectional area of the second air passage hole 22a (i.e., the hydraulic diameter of the second air passage hole 22a).

[0095] Exemplarily, referring to FIG. 2, in a plane perpendicular to the first direction of the aerosol generating article 100, the cross-sectional area (the hydraulic diameter) of a single first air passage hole 10a is greater than or equal to the cross-sectional area (the hydraulic diameter) of a single second air passage hole 22a. Thus, when the number of the first air passage holes 10a is less than or equal to the number of the second air passage holes 22a, the sum of the cross-sectional areas of all the first air passage holes 10a may be greater than or equal to the sum of the cross-sectional areas of all the second air passage holes 22a by controlling the cross-sectional area (the hydraulic diameter) of the single first air passage hole 10a to be greater than or equal to the cross-sectional area (the hydraulic diameter) of the single second air passage hole 22a, so that the inhalation resistance of the substrate segment 10 can be controlled to be less than or equal to the inhalation resistance of the filtering segment 22 . In addition, the cross-sectional area (the hydraulic diameter) of the single first air passage hole 10a is controlled to be greater than or equal to the cross-sectional area (the hydraulic diameter) of the single second air passage hole 22a, which is more conducive to satisfying the sensory characteristics of the user such as the natural and smooth inhalation, smoke penetration, and comfort during the inhalation process.

[0096] It can be understood that in case that the cross-sectional area of the single first air passage hole 10a (the hydraulic diameter of the first air passage hole 10a) is greater than or equal to the cross-sectional area of the single second air passage hole 22a (the hydraulic diameter of the second air passage hole 22a), the magnitude of the inhalation resistance of the substrate segment 10 and the magnitude of the inhalation resistance of the filtering segment 22 can be controlled by controlling the number of the first air passage holes 10a and the number of the second air passage holes 22a. Exemplarily, referring to FIG. 2 and FIG. 3, the number of the first air passage holes 10a is less than or equal to the number of the second air passage holes 22a. Thus, in case that the cross-sectional area of the single first air passage hole 10a is greater than or equal to the cross-sectional area of the single second air passage hole 22a, the sum of the cross-sectional areas of all the first air passage holes 10a may be greater than or equal to the sum of the cross-sectional areas of all the second air passage holes 22a by controlling the number of the first air passage holes 10a to be less than or equal to the number of the second air passage holes 22a, so that the inhalation resistance of the substrate segment 10 can be controlled to be less than or equal to the inhalation resistance of the filtering segment 22 . In addition, the number of the first air passage holes 10a is controlled to be less than or equal to the number of the second air passage holes 22a, which is more conducive to satisfying the sensory characteristics of the user such as the natural and smooth inhalation, smoke penetration, and comfort during the inhalation process.

[0097] Exemplarily, at least one cavity 100a is arranged inside the aerosol generating article 100. It should be noted that the number of cavities 100a is not limited here, that is, there may be one cavity 100a or a plurality of cavities 100a.

[0098] It should be noted that the specific position and formation method of the cavity 100a are not limited here. For example, the cavity 100a may be formed between any two of the substrate segment 10, the cooling segment 21 and the filtering segment 22, or may be formed at an end of the substrate segment 10 away from the cooling segment 21, or may be formed at an end of the filtering segment 22 away from the cooling segment 21.

[0099] By arranging the combined structure of the cavities 100a at different positions, the flow path of the aerosol can be increased, and the airflow passage can be increased. The structure of the cavities 100a can be combined according to the needs by using technical principles such as the heat exchange, so that beneficial effects can be achieved in terms of improving the formation, buffering, and cooling of the aerosol.

[0100] Exemplarily, in some embodiments, referring to FIG. 5, the substrate segment 10 and the cooling segment 21 are spaced apart from each other to define a cavity 100a. That is, the substrate segment 10 and the cooling segment 21 are spaced apart from each other, and form the cavity 100a together with the wrapping layer 30 wrapped around the peripheral sides of the substrate segment 10 and the cooling segment 21. It can be understood that by forming the cavity 100a between the substrate segment 10 and the cooling segment 21, the aerosol generated by heating the substrate segment 10 can flow into the cavity 100a, and the arrangement of the cavity 100a can buffer the aerosol generated by the substrate segment 10, which can facilitate the extraction of the aerosol and improve the utilization rate of the substrate segment 10. Furthermore, the arrangement of the cavity 100a can increase the contact area between the airflow flowing out of the substrate segment 10 and the aerosol generating article 100, thereby achieving a better cooling effect. Furthermore, a direct contact between the cooling segment 21 and the substrate segment 10 is avoided, to reduce the probability of the aerosol deposition on the end faces of the cooling segment 21 and the substrate segment 10, and reduce the loss of the aerosol during the delivery.

[0101] Exemplarily, in some embodiments, referring to FIG. 6, the filtering segment 22 and the cooling segment 21 are spaced apart from each other to define a cavity 100a. That is, the filtering segment 22 and the cooling segment 21 are spaced apart from each other, and form the cavity 100a together with the wrapping layer 30 wrapped around the peripheral sides of the filtering segment 22 and the cooling segment 21. It can be understood that by forming the cavity 100a between the filtering segment 22 and the cooling segment 21, the aerosol generated by heating the substrate segment 10 can flow toward the filtering segment 22, and then flow toward the cavity 100a for buffering. In this way, the flow path of the aerosol is increased during the delivery process of the aerosol, thereby leading to a rapid cooling effect, and in addition, the arrangement of the cavity 100a can also buffer the aerosol generated by the substrate segment 10.

[0102] It should be noted that, in other embodiments, referring to FIG. 7, a cavity 100a is arranged between the substrate segment 10 and the cooling segment 21, and a cavity 100a is arranged between the filtering segment 22 and the cooling segment 21. The cavity 100a provided in this embodiment has functions of buffering and cooling the aerosol, and facilitates the rapid extract of the aerosol. In addition, on the premise of preferentially ensuring the function of buffering the aerosol, the arrangement of the cavities 100a between the substrate segment 10 and the cooling segment 21 and between the filtering segment 22 and the cooling segment 21, that is, the alternately combined cavity 100a structure, further improves the extraction rate of the aerosol and the function of buffering the aerosol.

[0103] Exemplarily, in some embodiments, referring to FIG. 8, a cavity 100a is arranged at least at an end of the substrate segment 10 away from the cooling segment 21. That is, a cavity 100a is arranged at least at a distal lip end of the substrate segment 10 to increase the cavity area between the substrate segment 10 and the air, which is conducive to the natural diffusion of the aerosol formed by heating the substrate segment 10. The aerosol generated by heating the substrate segment 10 can take out components of the substrate that are not generated by heat in the heating zone, which is conducive to the generation of the aerosol.

[0104] The distal lip end of the substrate segment 10 refers to an end of the substrate segment 10 away from the user when the user uses the aerosol generating article 100.

[0105] Exemplarily, in some embodiments, referring to FIG. 9, a cavity 100a is arranged at least at an end of the filtering segment 22 away from the cooling segment 21. That is, the cavity 100a is arranged at least at a proximal lip end of the filtering segment 22, which increases the area of the cavity 100a at the proximal lip end of the filtering segment 22, and reduces the heat conduction efficiency. In this way, after the aerosol flows out from the proximal lip end of the filtering segment 22, the aerosol can quickly contact with the air, that is, the heat conduction efficiency of the air is relatively low, and the cooling of the aerosol is achieved through the rapid heat exchange when the aerosol is encountered with the external cold air, which improves the problem of smoke "scalding", and is beneficial to the functions of extracting and cooling the aerosol.

[0106] Exemplarily, in some embodiments, referring to FIG. 5 to FIG. 10, a passage 21a is arranged inside the cooling segment 21, and the passage 21a penetrates through two ends of the cooling segment 21 in the first direction. A corrugated structure 21b is arranged between a side wall of the passage 21a and an outer side wall of the cooling segment 21, and the corrugated structure 21b extends in the first direction of the cooling segment 21. That is, each of the passage 21a and the corrugated structure 21b extends in the first direction, and the aerosol generated by the substrate segment 10 can flow through the passage 21a or the corrugated structure 21b for cooling.

[0107] The corrugated structure 21b is, for example, a structure positioned between the side wall of the passage 21a and the outer side wall of the cooling segment 21, and has a wavy cross segment.

[0108] The corrugated structure 21b is arranged between the side wall of the passage 21a and the outer side wall of the cooling segment 21, and the corrugated structure 21b is evenly distributed on a peripheral side of the passage 21a, which is beneficial to realizing the supporting and cooling functions, and in addition, it also has the function of adjusting the inhalation resistance.

[0109] Exemplarily, referring to FIG. 11, a groove 21c is formed on a circumferential outer surface of the cooling segment 21, and the groove 21c spans across two opposite ends of the cooling segment 21 in the first direction. The arrangement of the groove 21c can increase the contact area between the aerosol and the cooling segment 21, reduce the flow rate of the aerosol, and is more conducive to reducing the temperature of the aerosol, and the groove 21c also has the function of carrying the incense.

[0110] It should be noted that the number of the groove 21c is not limited here, that is, one groove 21c may be arranged or a plurality of grooves 21c may be arranged. When the cooling segment 21 is provided with a plurality of grooves 21c, the plurality of grooves 21c are arranged on the circumferential outer surface of the cooling segment 21 and spaced apart from each other.

[0111] Exemplarily, the cooling segment 21 is one of a hollow vinegar fiber structure, a solid vinegar fiber structure, or a hollow paper tube.

[0112] Referring to FIG. 2 and FIG. 3, when the cooling segment 21 is a hollow vinegar fiber structure or a solid vinegar fiber structure, which is beneficial to achieving the supporting and cooling functions and quickly extracting the aerosol.

[0113] Referring to FIG. 4, when the cooling segment 21 is a hollow paper tube, it is beneficial to achieving the supporting and cooling functions, form a larger passage 21a, and has a function of buffering the aerosol, and it is beneficial to increasing the total amount of the aerosol generated.

[0114] Referring to FIG. 2 to FIG. 9, the aerosol generating article 100 adopts a three-stage combination structure of the filtering segment 22 formed by the extrusion molding, the cooling segment 21, and the substrate segment 10 formed by the extrusion molding, which solves the problems of a low extraction efficiency of the aerosol and a low generation amount of the aerosol by increasing the contact area between the substrate segment 10 and the air.

[0115] In an example, the substrate segment 10, the cooling segment 21 and the filtering segment 22 are cylinders and arranged coaxially, and the first direction is an axial direction of these three segments. The substrate segment 10, the cooling segment 21 and the filtering segment 22 are cylinders, and arranged sequentially along the axial direction of the substrate segment 10, the cooling segment 21 and the filtering segment 22, which can made the structure of the aerosol generating article 100 more compact, and can improve the user experience.

[0116] Eight specific embodiments will be briefly described below with reference to the accompanying drawings.First embodiment

[0117] Referring to FIG. 2, in this embodiment, the aerosol generating article 100 includes a substrate segment 10, a cooling segment 21, and a filtering segment 22, and the substrate segment 10, the cooling segment 21 and the filtering segment 22 are separable from each other. That is, the aerosol generating article 100 is a three-segment combination structure in which the substrate segment 10, the cooling segment 21 and the filtering segment 22 are sequentially combined.

[0118] Each of the substrate segment 10 and the filtering segment 22 is an integrated structure.

[0119] The filtering segment 22 is an integrated structure, which is beneficial to achieving the targeted filtration of the aerosol, and improving the on-demand delivery and transfer of effective ingredients of the aerosol. In addition, it solves the problem that the filtering segment 22 in the related art filters the aerosol through a physical tow pore diameter and the like resulting in a part of the effective ingredients being filtered.

[0120] Referring to FIG. 2, at least one first air passage hole 10a is arranged inside the substrate segment 10, the first air passage hole 10a penetrates through at least one end of the substrate segment 10 in the first direction, at least one second air passage hole 22a is arranged inside the filtering segment 22, and the second air passage hole 22a penetrates through at least one end of the filtering segment 22 in the first direction. The arrangement of the first air passage hole 10a and the second air passage hole 22a may adjust the inhalation resistance.

[0121] In a plane perpendicular to the first direction of the aerosol generating article 100, the sum of the cross-sectional areas of all the first air passage holes 10a is greater than or equal to the sum of the cross-sectional areas of all the second air passage holes 22a, so that the inhalation resistance of the substrate segment 10 is less than or equal to the inhalation resistance of the filtering segment 22. The hydraulic diameter of the single first air passage hole 10a is greater than the hydraulic diameter of the single second air passage hole 22a. The number of the first air passage holes 10a is less than or equal to the number of the second air passage holes 22a. This is conducive to adjusting the inhalation resistance of the aerosol generating article 100.

[0122] The cooling segment 21 is a hollow vinegar fiber structure, which is beneficial to achieving the supporting and cooling functions and quickly extracting the aerosol.Second embodiment

[0123] Referring to FIG. 3, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the first embodiment, except that in this embodiment, the hydraulic diameter of the single first air passage hole 10a is equal to the hydraulic diameter of the single second air passage hole 22a, the number of the first air passage holes 10a is equal to the number of the second air passage holes 22a, and the sum of the cross-sectional areas of all the first air passage holes 10a is greater than or equal to the sum of the cross-sectional areas of all the second air passage holes 22a. That is, the substrate segment 10 and the filtering segment 22 may be identical in structure but different in materials. In this way, this facilitates the stability of the axial release of the aerosol and the common extrusion processing die, that is, the filtering segment 22 and the substrate segment 10 can be obtained by using the same extrusion die, which further improves the production efficiency of the aerosol generating article 100.

[0124] It can be understood that the second embodiment differs from the first embodiment in the difference in parameters such as the number of second air passage holes 22a, the hydraulic diameter of the second air passage holes 22a, the number of first air passage holes 10a, and the hydraulic diameter of the first air passage holes 10a. The hydraulic diameter of the single first air passage hole 10a is greater than the hydraulic diameter of the single second air passage hole 22a, and the number of the first air passage holes 10a is less than or equal to the number of the second air passage holes 22a, which is more conducive to adjusting the inhalation resistance and target filtering the harmful components of the aerosol.Third embodiment

[0125] Referring to FIG. 4, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the second embodiment, except that in this embodiment, the cooling segment 21 may be a hollow paper tube, which is conducive to achieving the supporting and cooling functions, and leads to a larger passage 21a, so that it is more conducive to buffering the aerosol and increasing the total amount of the aerosol generated.

[0126] It can be understood that the third embodiment differs from the first embodiment in the difference in parameters such as the number of second air passage holes 22a, the hydraulic diameter of the second air passage holes 22a, the number of first air passage holes 10a, and the hydraulic diameter of the first air passage holes 10a. The hydraulic diameter of the single first air passage hole 10a is greater than the hydraulic diameter of the single second air passage hole 22a, and the number of the first air passage holes 10a is less than or equal to the number of the second air passage holes 22a, which is more conducive to adjusting the inhalation resistance and target filtering the harmful components of the aerosol. In this embodiment, the cooling segment 21 is a hollow paper tube, which is conducive to achieving the supporting and cooling functions, and leads to a larger passage 21a, so that it is more conducive to buffering the aerosol and increasing the total amount of the aerosol generated.Fourth embodiment

[0127] Referring to FIG. 5, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the first embodiment, except that in this embodiment, the hydraulic diameter of the single first air passage hole 10a is greater than or equal to the hydraulic diameter of the single second air passage hole 22a, and the number of the first air passage holes 10a is less than or equal to the number of the second air passage holes 22a. This is conducive to adjusting the inhalation resistance of the aerosol generating article 100.

[0128] In addition, referring to FIG. 10, a passage 21a is arranged inside the cooling segment 21, and the passage 21a penetrates through two ends of the cooling segment 21 in the first direction. A corrugated structure 21b is arranged between a side wall of the passage 21a and an outer side wall of the cooling segment 21, and the corrugated structure 21b extends in the first direction of the cooling segment 21. That is, each of the passage 21a and the corrugated structure 21b extends in the first direction, and the aerosol generated by the substrate segment 10 can flow through the passage 21a or the corrugated structure 21b for cooling.

[0129] The corrugated structure 21b is arranged between the side wall of the passage 21a and the outer side wall of the cooling segment 21, and the corrugated structure 21b is evenly distributed on a peripheral side of the passage 21a, which is beneficial to realizing the supporting and cooling functions, and in addition, it also has the function of adjusting the inhalation resistance.

[0130] In addition, in this embodiment, the substrate segment 10 and the cooling segment 21 are spaced apart from each other to define a cavity 100a.

[0131] That is, the substrate segment 10 and the cooling segment 21 are spaced apart from each other, and form the cavity 100a together with the wrapping layer 30 wrapped around the peripheral sides of the substrate segment 10 and the cooling segment 21. It can be understood that by forming the cavity 100a between the substrate segment 10 and the cooling segment 21, the aerosol generated by heating the substrate segment 10 can flow into the cavity 100a, and the arrangement of the cavity 100a can buffer the aerosol generated by the substrate segment 10, which can facilitate the extraction of the aerosol and improve the utilization rate of the substrate segment 10. Furthermore, the arrangement of the cavity 100a can increase the contact area between the airflow flowing out of the substrate segment 10 and the aerosol generating article 100, thereby achieving a better cooling effect. Furthermore, a direct contact between the cooling segment 21 and the substrate segment 10 is avoided, to reduce the probability of the aerosol deposition on the end faces of the cooling segment 21 and the substrate segment 10, and reduce the loss of the aerosol during the delivery.Fifth embodiment

[0132] Referring to FIG. 6, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the fourth embodiment, except that in this embodiment, a cavity 100a is arranged between the filtering segment 22 and the cooling segment 22.

[0133] That is, the filtering segment 22 and the cooling segment 21 are spaced apart from each other, and form the cavity 100a together with the wrapping layer 30 wrapped around the peripheral sides of the filtering segment 22 and the cooling segment 21. It can be understood that by forming the cavity 100a between the filtering segment 22 and the cooling segment 21, the aerosol generated by heating the substrate segment 10 can flow toward the filtering segment 22, and then flow toward the cavity 100a for buffering. In this way, the flow path of the aerosol is increased during the delivery process of the aerosol, thereby leading to a rapid cooling effect, and in addition, the arrangement of the cavity 100a can also buffer the aerosol generated by the substrate segment 10.Sixth embodiment

[0134] Referring to FIG. 7, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the fourth embodiment, except that in this embodiment, a cavity 100a is arranged between the substrate segment 10 and the cooling segment 21, and a cavity 100a is arranged between the filtering segment 22 and the cooling segment 21.

[0135] The cavity 100a provided in this embodiment has functions of buffering and cooling the aerosol, and facilitates the rapid extract of the aerosol. In addition, on the premise of preferentially ensuring the function of buffering the aerosol, the arrangement of the cavities 100a between the substrate segment 10 and the cooling segment 21 and between the filtering segment 22 and the cooling segment 21, that is, the alternately combined structure of the cavities 100a, further improves the extraction rate of the aerosol and the function of buffering the aerosol.Seventh Embodiment

[0136] Referring to FIG. 8, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the fourth embodiment, except that in this embodiment, a cavity 100a is arranged at an end of the substrate segment 10 away from the cooling segment 21.

[0137] In this embodiment, the cavity 100a is arranged at the end of the substrate segment 10 away from the cooling segment 21 to increase the contact area between the substrate segment 10 and the air, which is conducive to the natural diffusion of the aerosol formed by heating the substrate segment 10. The aerosol generated by heating the substrate segment 10 can take out components of the substrate that are not generated by heat in the heating zone, which is conducive to the generation of the aerosol.Eighth embodiment

[0138] Referring to FIG. 9, in this embodiment, the structure of the aerosol generating article 100 is substantially the same as the structure of the fourth embodiment, except that in this embodiment, a cavity 100a is arranged at an end of the filtering segment 22 away from the cooling segment 21.

[0139] In this embodiment, the cavity 100a is arranged at the end of the filtering segment 22 away from the cooling segment 21, which increases the area of the cavity 100a at the proximal lip end of the filtering segment 22, and reduces the heat conduction efficiency. In this way, after the aerosol flows out from the proximal lip end of the filtering segment 22, the aerosol can quickly contact with the air, that is, the heat conduction efficiency of the air is relatively low, and the cooling of the aerosol is achieved through the rapid heat exchange when the aerosol is encountered with the external cold air, which improves the problem of smoke "scalding", and is beneficial to the functions of extracting and cooling the aerosol.

[0140] In the description of the present application, an expression with reference to the terms "in an embodiment", "in some embodiments", "in other embodiments", "in still other embodiments", "exemplarily" or the like means that specific features, structures, materials, or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic expression of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any one or more embodiments or examples in a suitable manner. Furthermore, those skilled in the art can combine different embodiments or examples described in the present application and features of different embodiments or examples without contradicting each other.

[0141] The foregoing is merely a preferred embodiment of the present application, and is not intended to limit the present application, and various modifications and variations can be made for those skilled in the art. Any modifications, substitutions and improvements made within the spirit and principles of the present application should be included within the scope of protection of the present application.

Claims

1. An aerosol generating article, comprising a substrate segment and a functional segment, the functional segment being arranged at an end of the substrate segment in a first direction, the functional segment comprising a cooling segment and a filtering segment, the cooling segment being located between the filtering segment and the substrate segment, and each of the substrate segment and the filtering segment being an integrated structure; wherein at least one first air passage hole is arranged inside the substrate segment, the first air passage hole penetrates through at least one end of the substrate segment in the first direction, at least one second air passage hole is arranged inside the filtering segment, and the second air passage hole penetrates through at least one end of the filtering segment in the first direction.

2. The aerosol generating article according to claim 1, wherein the substrate segment, the cooling segment and the filtering segment are separable from each other.

3. The aerosol generating article according to claim 2, wherein in a plane perpendicular to the first direction of the aerosol generating article, a sum of cross-sectional areas of all first air passage holes is greater than or equal to a sum of cross-sectional areas of all second air passage holes.

4. The aerosol generating article according to claim 3, wherein a number of the first air passage holes is less than or equal to a number of the second air passage holes.

5. The aerosol generating article according to claim 3, wherein in the plane perpendicular to the first direction of the aerosol generating article, a cross-sectional area of a single first air passage hole is greater than or equal to a cross-sectional area of a single second air passage hole, or a hydraulic diameter of a single first air passage hole is greater than or equal to a hydraulic diameter of a single second air passage hole.

6. The aerosol generating article according to claim 1, wherein at least one cavity is arranged inside the aerosol generating article.

7. The aerosol generating article according to claim 6, wherein the substrate segment and the cooling segment are spaced apart from each other to define the cavity; and / or the filtering segment and the cooling segment are spaced apart from each other to define the cavity.

8. The aerosol generating article according to claim 6, wherein the cavity is arranged at least at an end of the substrate segment away from the cooling segment; and / or the cavity is arranged at least at an end of the filtering segment away from the cooling segment.

9. The aerosol generating article according to claim 1, wherein a passage is arranged inside the cooling segment and penetrates through two ends of the cooling segment in the first direction, a corrugated structure is arranged between a side wall of the passage and an outer side wall of the cooling segment, and the corrugated structure extends in the first direction of the cooling segment; and / or a groove is formed on a circumferential outer surface of the cooling segment, and the groove spans across two opposite ends of the cooling segment in the first direction.

10. The aerosol generating article according to claim 1, wherein the cooling segment is one of a hollow vinegar fiber structure, a solid vinegar fiber structure, or a hollow paper tube.

11. The aerosol generating article according to claim 1, wherein inhalation resistance of the substrate segment is less than or equal to inhalation resistance of the filtering segment.

12. The aerosol generating article according to claim 11, wherein the inhalation resistance of the substrate segment ranges from 10 Pa to 100 Pa; and / or the inhalation resistance of the filtering segment ranges from 50 Pa to 300 Pa.

13. The aerosol generating article according to claim 1, wherein inhalation resistance of the aerosol generating article ranges from 500 Pa to 1100 Pa.

14. The aerosol generating article according to claim 1, wherein the substrate segment, the cooling segment and the filtering segment are cylinders and arranged coaxially, and the first direction is an axial direction of the substrate segment, the cooling segment and the filtering segment.

15. An aerosol generating device for use with the aerosol generating article according to any one of claims 1 to 14, wherein the aerosol generating device comprises a heating member configured to heat the substrate segment to generate an aerosol.

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