Aerosol-generating substrate and aerosol-generating product

Abstract

The embodiment of the invention provides an aerosol generating substrate and an aerosol generating product, the aerosol generating substrate comprises at least two straight plate-shaped frameworks, and all the frameworks jointly form an integrated structure with an air passage; wherein the air passage extends from one end of the aerosol-generating substrate in the first direction to the other opposite end, and the air passage at least comprises a first air passage located outside the aerosol-generating substrate. The aerosol generating substrate provided by the embodiment of the invention can improve the smoking experience feeling.

Description

Technical Field

[0001] The present application relates to the field of smoke generation technology, and in particular to an aerosol generating substrate and an aerosol generating product. Background Art

[0002] Aerosol generating products generally generate aerosols by heating without burning. Specifically, an aerosol generating matrix is ​​provided in the aerosol generating product. The aerosol generating matrix is ​​heated by an external heat source, such as a heating component on an aerosol generating device, so that it is heated just enough to emit a fragrance. The aerosol generating matrix does not burn, but instead loads an atomizer and releases the atomizer by heating when in use to form smoke.

[0003] The aerosol generating matrices in the related art mainly include three types: particle type, traditional tobacco type and sheet type. The efficiency of aerosol extraction of these aerosol generating matrices is low, and the smoking experience is relatively poor. Summary of the invention

[0004] In view of this, the embodiments of the present application hope to provide an aerosol generating substrate and an aerosol generating product that can improve the smoking experience.

[0005] To achieve the above-mentioned object, an embodiment of the present application provides an aerosol generating substrate, wherein the aerosol generating substrate comprises at least two straight plate-shaped skeletons, and all the skeletons together form an integrated structure having an airway;

[0006] The air channel extends from one end of the aerosol generating substrate along a first direction to another opposite end, and the air channel at least includes a first air channel located outside the aerosol generating substrate.

[0007] In one embodiment, the airway further comprises a second airway located within the interior of the aerosol-generating substrate.

[0008] In one embodiment, the cross-sectional shape of the first air channel is a portion of the cross-sectional shape of the second air channel.

[0009] In one embodiment, the outer edge of the cross section of the aerosol generating substrate perpendicular to the first direction is located on the circumference of the same circle, ellipse or waist circle.

[0010] In one embodiment, the air channel further comprises a plurality of second air channels located inside the aerosol generating substrate, and the cross-sectional shape of each of the second air channels is square or diamond.

[0011] In one embodiment, the outer edge of the cross section of the aerosol generating substrate perpendicular to the first direction is located on the circumference of the same circle; the cross-sectional shape of the second airway is square, and the sum of the surface areas of the side walls of all the first airways accounts for 0.5% to 30% of the sum of the surface areas of the side walls of all the airways.

[0012] In one embodiment, the outer edge of the cross section of the aerosol generating substrate perpendicular to the first direction is located on the circumference of the same circle; the cross-sectional shape of the second airway is a rhombus, and the sum of the surface areas of the side walls of all the first airways accounts for 0.5% to 50% of the sum of the surface areas of the side walls of all the airways.

[0013] In one embodiment, the outer edge of the cross-section of the aerosol generating matrix perpendicular to the first direction is located on the circumference of the same waist circle; the cross-sectional shape of each of the second airways is square, and the sum of the surface areas of the side walls of all the first airways accounts for 0.5% to 40% of the sum of the surface areas of the side walls of all the airways.

[0014] In one embodiment, the outer edge of the cross-section of the aerosol generating matrix perpendicular to the first direction is located on the circumference of the same waist circle; the cross-sectional shape of each of the second airways is a rhombus, and the sum of the surface areas of the side walls of all the first airways accounts for 0.5% to 60% of the sum of the surface areas of the side walls of all the airways.

[0015] In one embodiment, each of the skeletons is combined to form a skeleton structure having a first outer surface, a second outer surface and a third outer surface, wherein the first outer surface and the second outer surface are respectively located at opposite ends of the skeleton structure along the first direction, and the third outer surface is located between the first outer surface and the second outer surface;

[0016] The third outer surface has a first area and a second area, the aerosol generating matrix further comprises an outer skin, the outer skin is coated on the first area, and each of the first air channels is located in the second area.

[0017] In one embodiment, the first region and the second region extend from the first outer surface to the second outer surface respectively.

[0018] In one embodiment, the first region is located on one side of the second region along the first direction.

[0019] In one embodiment, each of the skeletons is combined to form a skeleton structure having a first outer surface, a second outer surface and a third outer surface, wherein the first outer surface and the second outer surface are respectively located at opposite ends of the skeleton structure along the first direction, and the third outer surface is located between the first outer surface and the second outer surface, and the third outer surface is exposed.

[0020] In one embodiment, the air channel further comprises a plurality of second air channels located inside the aerosol generating substrate, and the sum of the surface areas of the side walls of all the first air channels accounts for 0.5% to 15% of the sum of the surface areas of the side walls of all the air channels.

[0021] In one embodiment, the cross-section of the aerosol generating matrix perpendicular to the first direction is radially extending from the center to the surroundings, each of the skeletons constructs the radial shape, and the first airway is formed between two adjacent skeletons.

[0022] In one embodiment, the air channel further comprises a second air channel located inside the aerosol generating substrate, and the sum of the surface areas of the side walls of all the first air channels is greater than or equal to 50% and less than 90% of the sum of the surface areas of the side walls of all the air channels.

[0023] In one embodiment, the skeleton includes a plurality of first skeletons and a plurality of second skeletons, wherein the plurality of first skeletons surround a skeleton body having a hollow space inside, one end of each of the second skeletons along a second direction is located in the hollow space, and the other end of each of the second skeletons along the second direction is located outside the skeleton body, wherein the second direction is perpendicular to the first direction;

[0024] Each of the second skeletons separates the second air channel in the hollow space, and the first air channel is formed between the parts of two adjacent second skeletons located outside the skeleton body.

[0025] In one embodiment, the number of the first skeletons and the number of the second skeletons are four each, the cross-sectional shape of the skeleton main body perpendicular to the first direction is a square, each of the second skeletons is connected at one end located in the hollow space, and each of the second skeletons extends from the position of the skeleton main body corresponding to each corner of the square to the outside of the skeleton main body.

[0026] In one embodiment, the sum of the surface areas of the side walls of all the first air channels is greater than or equal to 30% and less than 90% of the sum of the surface areas of the side walls of all the air channels.

[0027] In one embodiment, the aerosol generating substrate has a centrally symmetrical structure relative to a center line extending along the first direction.

[0028] In one embodiment, the aerosol generating substrate is axially symmetrical with respect to an axis perpendicular to the first direction.

[0029] In one embodiment, the aerosol generating substrate is columnar, and the first direction is the elongation direction of the aerosol generating substrate.

[0030] Another embodiment of the present application provides an aerosol generating product, comprising: the aerosol generating substrate described above.

[0031] Another embodiment of the present application provides an aerosol generating product, which includes an outer wrapping layer and the aerosol generating substrate described above, wherein the aerosol generating substrate has a first end and a second end along the first direction, and the outer wrapping layer wraps the outer peripheral side of the aerosol generating substrate between the first end and the second end.

[0032] In one embodiment, the aerosol generating product further includes a functional segment, which is arranged at one end of the aerosol generating substrate along the first direction, and the functional segment at least includes a filtering segment for filtering aerosol; the outer wrapping layer also wraps the outer surface of the functional segment.

[0033] In one embodiment, the functional section further includes a cooling section, and the cooling section is located between the filtering section and the aerosol generating substrate.

[0034] In one embodiment, the functional segment further comprises a supporting segment, and the supporting segment is located between the filtering segment and the aerosol generating substrate.

[0035] In one embodiment, the functional section further includes a suction resistance adjusting section, the suction resistance of the suction resistance adjusting section is different from the suction resistance of the aerosol generating matrix; the suction resistance adjusting section is located between the filtering section and the aerosol generating matrix.

[0036] In one embodiment, the functional section further includes a suction resistance adjusting section, the suction resistance of the suction resistance adjusting section is different from the suction resistance of the aerosol generating substrate; the suction resistance adjusting section is located on a side of the filtering section away from the aerosol generating substrate.

[0037] The embodiment of the present application provides an aerosol generating substrate and an aerosol generating product, wherein the aerosol generating substrate includes at least two straight plate-shaped skeletons, and all the skeletons together form an integrated structure with an airway, wherein the airway extends from one end of the aerosol generating substrate along a first direction to the other opposite end, and the airway includes at least a first airway located outside the aerosol generating substrate. The first airway can extend the airflow path and increase the flow velocity of the airflow in the aerosol generating substrate, thereby increasing the impact force of the airflow and enabling the aerosol to be evenly mixed. At the same time, by combining at least two straight plate-shaped skeletons to form the first airway, the side wall of the first airway can have a relatively large surface area, and the airflow in the first airway can be fully in contact with the side wall of the first airway, thereby improving the heat exchange capacity between the airflow in the first airway and the aerosol generating substrate, and then improving the extraction efficiency and uniformity of the aerosol in the aerosol generating substrate. The aerosol generating substrate of the embodiment of the present application can be used to better improve the user's suction experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic structural diagram of the first aerosol generating substrate of an embodiment of the present application;

[0039] Figure 2 for Figure 1 A schematic cross-sectional view of the aerosol generating substrate perpendicular to the first direction is shown;

[0040] Figure 3 This is a schematic structural diagram of a second aerosol generating substrate according to an embodiment of the present application;

[0041] Figure 4 This is a schematic structural diagram of a third aerosol generating substrate according to an embodiment of the present application;

[0042] Figure 5 for Figure 4 A schematic cross-sectional view of the aerosol generating substrate perpendicular to the first direction is shown;

[0043] Figure 6 is a cross-sectional view of a fourth aerosol generating substrate according to an embodiment of the present application;

[0044] Figure 7 is a cross-sectional view of a fifth aerosol generating substrate according to an embodiment of the present application;

[0045] Figure 8 This is a schematic structural diagram of a sixth aerosol generating substrate according to an embodiment of the present application;

[0046] Fig. 9 This is a schematic structural diagram of the seventh aerosol generating substrate according to an embodiment of the present application;

[0047] Fig.10 This is a schematic structural diagram of an eighth aerosol generating substrate according to an embodiment of the present application;

[0048] Fig.11 This is a schematic structural diagram of a ninth aerosol generating substrate according to an embodiment of the present application;

[0049] Fig.12 This is a schematic structural diagram of the tenth aerosol generating substrate according to an embodiment of the present application;

[0050] Fig.13 This is a schematic structural diagram of a first aerosol generating product according to an embodiment of the present application;

[0051] Fig.14 for Fig.13 a cross-sectional view of the aerosol-generating article shown;

[0052] Fig.15 is a cross-sectional view of a second aerosol generating article according to an embodiment of the present application;

[0053] Fig.16 is a cross-sectional view of a third aerosol generating article according to an embodiment of the present application;

[0054] Fig.17 This is a cross-sectional view of a fourth aerosol-generating article according to an embodiment of the present application.

[0055] Description of Reference Numerals

[0056] 10. Aerosol generating matrix; 10a. Airway; 10a1. First airway; 10a2. Second airway; 11. Skeleton; 11′. First skeleton; 11″. Second skeleton; 11A. Skeleton structure; 11A1. First outer surface; 11A2. Second outer surface; 11A3. Third outer surface; 11A31. First region; 11A32. Second region; 11B. Skeleton body; 12. Outer skin; 20. Outer wrapping layer; 30. Functional section; 31. Filtering section; 32. Cooling section; 33. Support section; 34. Resistance-to-inhalation adjusting section. DETAILED DESCRIPTION

[0057] In the description of the embodiments of the present application, it should be noted that the orientation or position relationship indicated by the term "first direction" or the like is based on the attached Figure 1 The orientation or positional relationship shown, these orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0058] An embodiment of the present application provides an aerosol generating product, see Figures 1 to 17, the aerosol-generating article comprises an aerosol-generating substrate 10.

[0059] The aerosol generating substrate 10 includes at least two straight plate-shaped skeletons 11, and all the skeletons 11 together form an integrated structure with an air channel 10a. The air channel 10a extends from one end of the aerosol generating substrate 10 along a first direction to the other opposite end, and the air channel 10a includes at least a first air channel 10a1 located outside the aerosol generating substrate 10.

[0060] The aerosol generating article can be used in conjunction with an aerosol generating device having a heating component. Specifically, the heating component heats and atomizes the aerosol generating substrate 10 to generate an aerosol for users to inhale or for use in medicine, beauty, etc.

[0061] There are many heating methods for the heating component. Exemplarily, the heating methods include central heating and peripheral heating. The central heating method refers to the heating component being inserted into the interior of the aerosol generating product to bake and heat the aerosol generating product from the inside out. The peripheral heating method refers to the heating component being arranged at the periphery of the aerosol generating product to bake and heat the aerosol generating product from the outside in. These heating methods may specifically be resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, etc.

[0062] The specific structure of the aerosol generating substrate 10 is not limited here. For example, in one embodiment, the aerosol generating substrate 10 can be made of an atomizing medium itself, such as a smoke flavoring medium. In other embodiments, the aerosol generating substrate 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. In this way, by providing the substrate, the strength of the aerosol generating substrate 10 can be improved, and the substrate can also withstand a certain degree of high temperature without generating odor.

[0063] The specific components of the aerosol generating matrix 10 are not limited herein. For example, in one embodiment, the aerosol generating matrix 10 may include plant components, auxiliary components, smoke generating agent components, adhesive components, and the like.

[0064] In one embodiment, the plant component is one or more combinations of powders formed by crushing tobacco raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, and aromatic plants. The plant component is the core source of the flavor of the product. Endogenous substances in the plant component, such as nicotine, enter the human blood through atomization, promote the pituitary gland to produce dopamine, and thus obtain physiological satisfaction.

[0065] In one embodiment, the auxiliary agent component can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Among them, the inorganic filler includes one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic filler can provide a skeleton support for the plant component, and the inorganic filler also has micropores, which can increase the porosity of the wall material after the plant component is formed, thereby increasing the aerosol release rate.

[0066] The lubricant includes one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase the fluidity of the particles, reduce the friction between the particles, make the overall density of the particle distribution more uniform, and also reduce the pressure required for mold molding and reduce the wear of the mold.

[0067] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can slow down the loss of flavor substances during storage to a certain extent, increase the stability of flavor substances, and improve the sensory quality of products. Emulsifiers (also known as surfactants) can reduce the interfacial tension of water-soluble and water-insoluble components in the mixed system, and form a relatively strong film on the surface of the droplets or form a double electric layer on the surface of the droplets due to the charge given by the emulsifier, preventing the droplets from aggregating with each other and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

[0068] The function of the smoke-generating agent component is to generate a large amount of steam when heated, thereby increasing the amount of smoke of the smoking product. 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, diacetin mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, glyceryl tributyrate, lauryl acetate) or one or more combinations thereof.

[0069] In one embodiment, the adhesive component is a natural plant extract, a non-ionized modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive is in close contact with the interface of the product component material by wetting, generating an intermolecular attraction, thereby playing the role of bonding the powder, liquid, etc. of the component material. At the same time, the use of natural plant extracts and non-ionic adhesives can avoid the release of harmful substances such as methanol, formaldehyde, and acrolein caused by colloid modification, thereby improving the safety of the product.

[0070] Please continue reading Figures 1 to 12 The aerosol generating substrate 10 is an integrated structure. For example, the aerosol generating substrate 10 can be a particle combination, and the particle combination is a reconstituted tobacco medium, for example, a reconstituted tobacco medium containing components such as a smoke generating agent and tobacco.

[0071] The aerosol generating matrix 10 can be formed into an integral structure by injection molding, compression molding, extrusion, casting, rolling, etc. 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.

[0072] The aerosol generating matrix 10 is an integrated structure during heating and suction or after stopping heating, and is not prone to disintegration and falling off, thereby solving the problems of the thin sheet, filament or loose particle aerosol generating matrix 10 in the prior art, such as loose sheets, falling of filamentary components and particle components, and difficulty in cleaning.

[0073] Please continue reading Figures 1 to 12 The aerosol generating matrix 10 is mainly composed of a skeleton 11, and the number of the skeleton 11 can be two or more than two.

[0074] The frame 11 is in the shape of a flat plate, that is, two opposite outer surfaces of the frame 11 along its thickness direction are both planes.

[0075] Among all the skeletons 11 , at least some of the skeletons 11 intersect with each other, that is, some of the skeletons 11 may intersect with each other, some of the skeletons 11 may be parallel, or all of the skeletons 11 may intersect with each other.

[0076] The airway 10a is a passage for external airflow and aerosol to pass through. Specifically, during the heating process of the aerosol generating substrate 10, the external airflow and the aerosol released by the aerosol generating substrate 10 when heated enter the airway 10a, and the airflow entering the airway 10a mixes with the aerosol and flows out of the airway 10a carrying the aerosol.

[0077] The first direction may be any direction of the aerosol generating substrate 10, for example, see Figure 1The first direction may be the height direction of the aerosol generating substrate 10. In other embodiments, the first direction may also be the length direction or the width direction of the aerosol generating substrate 10 (wherein the height direction, the length direction and the width direction are perpendicular to each other). The first direction may also be inclined relative to at least two of the length direction, the width direction and the height direction of the aerosol generating substrate 10.

[0078] For example, see Figure 1 The aerosol generating substrate 10 may be columnar, and the first direction may be the elongation direction (ie, height direction) of the aerosol generating substrate 10 .

[0079] The cross-sectional shape of the aerosol generating substrate 10 perpendicular to the first direction is not limited. For example, see Figure 1 and Figure 2 The outer edges of the cross-section of the aerosol generating substrate 10 perpendicular to the first direction may be located on the same circle (ie Figure 2 On the circumference of the dotted circle C1) shown, the outer edge of the cross-section of the aerosol generating matrix 10 perpendicular to the first direction refers to the point or line located on the outermost side of the cross-section, and these points or lines are located on the circumference of the same circle, which is equivalent to the cross-section of the aerosol generating matrix 10 perpendicular to the first direction being roughly circular.

[0080] For example, see Figure 4 and Figure 5 The outer edge of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may also be located on the same waist circle (ie Figure 5 The dotted waist circle (C2) shown in the figure is a closed figure formed by bisecting a circle into two semicircular arcs through the center of the circle and translating them in opposite directions, and connecting the endpoints of the two semicircular arcs with two parallel lines of equal length. In other words, the cross section of the aerosol generating substrate 10 perpendicular to the first direction is roughly waist-shaped. The cross section of the aerosol generating substrate 10 perpendicular to the first direction is roughly waist-shaped, which can be easy to manufacture and store, and can also provide a relatively large atomization surface area in a relatively small space.

[0081] Exemplarily, the outer edge of the cross section of the aerosol generating substrate 10 perpendicular to the first direction may also be located on the circumference of the same ellipse, that is, the cross section of the aerosol generating substrate 10 perpendicular to the first direction is substantially elliptical.

[0082] The aerosol generating substrate 10 may be a symmetrical structure. For example, the aerosol generating substrate 10 may be a centrally symmetrical structure with respect to a center line extending along the first direction, or an axially symmetrical structure with respect to an axis perpendicular to the first direction.

[0083] The aerosol generating substrate 10 may also have an asymmetric structure. For example, the cross-sectional shape of the aerosol generating substrate 10 perpendicular to the first direction may be an asymmetric structure, or all the airways 10a on the aerosol generating substrate 10 may be asymmetricly distributed.

[0084] The first air channel 10a1 is located outside the aerosol-generating substrate 10, that is, the first air channel 10a1 is located on the outer surface of the aerosol-generating substrate 10, and the cross section of the first air channel 10a1 is a non-closed shape.

[0085] The number of the first air passages 10a1 may be one or more.

[0086] The first air channel 10a1 is constructed by a skeleton 11, and at least a portion of the outer surface of the skeleton 11 constituting the first air channel 10a1 on one side in the thickness direction thereof constitutes a side wall of the first air channel 10a1.

[0087] The first air channel 10a1 can extend the airflow path and increase the flow speed of the airflow in the aerosol generating matrix 10, thereby increasing the impact force of the airflow and allowing the aerosol to be evenly mixed. At the same time, by combining at least two straight plate-shaped skeletons 11 to form the first air channel 10a1, the side wall of the first air channel 10a1 can have a relatively large surface area, and the airflow in the first air channel 10a1 can be fully in contact with the side wall of the first air channel 10a1, thereby improving the heat exchange capacity between the airflow in the first air channel 10a1 and the aerosol generating matrix 10, and further improving the extraction efficiency and uniformity of the aerosol in the aerosol generating matrix 10. The aerosol generating matrix 10 of the embodiment of the present application can better improve the user's inhalation experience.

[0088] In one embodiment, please refer to Figures 1 to 8 , Fig.11 and Fig.12 The aerosol generating matrix 10 may have both the first air channel 10a1 and the second air channel 10a2, wherein the second air channel 10a2 is located inside the aerosol generating matrix 10. That is, the skeletons 11 may be combined to form the second air channel 10a2 inside the aerosol generating matrix 10.

[0089] The second air channel 10a2 is located inside the aerosol generating matrix 10, which means that the second air channel 10a2 is surrounded by the matrix material, that is, the inner side of the second air channel 10a2 is all matrix material, and the cross section of the second air channel 10a2 is a closed shape.

[0090] The number of the second air passages 10a2 may be one or more.

[0091] The cross-sectional shape of the second air passage 10a2 may be a polygon (including but not limited to Figure 1 The square shown, Figure 3 The prism shown, Fig.12 The cross-sectional shape of the second air passage 10a2 may also be a triangle or a trapezoid. Fig.11 The circle shown ( Fig.11 The end faces of the mutually adjacent ends of the skeletons 11 are arcuate surfaces, and these arcuate surfaces are jointly arranged to form a second air passage 10a2 with a circular cross-section.

[0092] See also Figures 1 to 6 , the cross-sectional shape of the first air passage 10a1 may be a portion of the cross-sectional shape of the second air passage 10a2 air passage 10a.

[0093] The cross-sectional shape of the first air channel 10a1 may also be other regular or irregular polygonal shapes.

[0094] The second air channel 10a2 can also extend the airflow path and increase the flow speed of the airflow in the aerosol generating substrate 10, thereby increasing the impact force of the airflow and enabling the aerosol to be evenly mixed. At the same time, the aerosol generating substrate 10 is provided with the first air channel 10a1 and the second air channel 10a2 at the same time, which can increase the porosity of the aerosol generating substrate 10 (i.e., the percentage of the sum of the volumes of the first air channel 10a1 and the second air channel 10a2 to the total volume of the aerosol generating substrate 10), which is conducive to improving the consistency of aerosol extraction and release.

[0095] In one embodiment, please refer to Figure 1 and Figure 2 The outer edge of the cross section of the aerosol generating substrate 10 perpendicular to the first direction is located on the circumference of the same circle. The interior of the aerosol generating substrate 10 has a plurality of second air channels 10a2, and the cross-sectional shape of each second air channel 10a2 can be square.

[0096] The square second air channel 10a2 can make full use of the internal space of the aerosol generating matrix 10 whose cross-sectional shape is roughly circular, so that as many second air channels 10a2 as possible can be arranged inside the aerosol generating matrix 10. Thus, the porosity of the aerosol generating matrix 10 can be maximized, which is more conducive to improving the consistency of aerosol extraction and release.

[0097] Furthermore, for the square second air channel 10a2, the sum of the surface areas S1 of the side walls of all the first air channels 10a1 can account for 0.5% to 30% (including the endpoint values) of the sum of the surface areas S of the side walls of all the air channels 10a, that is, S1 / S = 0.5% to 30%. For example, S1 / S can be 0.5%, 5%, 10%, 15%, 20%, 30%, etc.

[0098] The sum of the surface areas S1 of the side walls of all the first air channels 10a1 accounts for 0.5% to 30% of the sum of the surface areas S of the side walls of all the air channels 10a, so that the first air channels 10a1 and the second air channels 10a2 can be distributed relatively evenly. After the aerosol generating matrix 10 is heated, rapid heat transfer can be achieved to achieve rapid release of aerosol, thereby significantly improving the aerosol generation efficiency.

[0099] In addition, by controlling the sizes of the first air channel 10a1 and the square second air channel 10a2, the suction resistance of the aerosol generating matrix 10 can be adjusted and the release amount of the aerosol can be changed to meet different inhalation requirements.

[0100] In one embodiment, please refer to Figure 3 The outer edge of the cross section of the aerosol generating substrate 10 perpendicular to the first direction is located on the circumference of the same circle, and the interior of the aerosol generating substrate 10 has a plurality of second air channels 10a2, and the cross-sectional shape of each second air channel 10a2 may also be a rhombus.

[0101] The diamond-shaped second air channel 10a2 can also make full use of the internal space of the aerosol generating matrix 10 whose cross-sectional shape is roughly circular, so that as many second air channels 10a2 as possible can be arranged inside the aerosol generating matrix 10. In this way, the porosity of the aerosol generating matrix 10 can be maximized, which is more conducive to improving the consistency of aerosol extraction and release.

[0102] Furthermore, for the diamond-shaped second air channel 10a2, the sum of the surface areas S1 of the side walls of all the first air channels 10a1 can account for 0.5% to 50% (including the endpoint values) of the sum of the surface areas S of the side walls of all the air channels 10a, that is, S1 / S = 0.5% to 50%. For example, S1 / S can be 0.5%, 5%, 10%, 15%, 20%, 30%, 40%, 50%, etc.

[0103] The sum of the surface areas S1 of the side walls of all the first air channels 10a1 accounts for 0.5% to 50% of the sum of the surface areas S of the side walls of all the air channels 10a, so that the first air channels 10a1 and the second air channels 10a2 can be distributed relatively evenly. After the aerosol generating matrix 10 is heated, rapid heat transfer can be achieved to achieve rapid release of aerosol, thereby significantly improving the aerosol generation efficiency.

[0104] In addition, by controlling the sizes of the first air channel 10a1 and the diamond-shaped second air channel 10a2, the suction resistance of the aerosol generating matrix 10 can be adjusted and the release amount of the aerosol can be changed to meet different inhalation requirements.

[0105] In one embodiment, please refer to Figure 4 and Figure 5The outer edge of the cross section of the aerosol generating substrate 10 perpendicular to the first direction is located on the circumference of the same waist circle, and the interior of the aerosol generating substrate 10 has a plurality of second air channels 10a2, and the cross-sectional shape of each second air channel 10a2 can be square.

[0106] The square second air channel 10a2 can also make full use of the internal space of the aerosol generating matrix 10 whose cross-sectional shape is roughly oval, so that as many second air channels 10a2 as possible can be arranged inside the aerosol generating matrix 10. In this way, the porosity of the aerosol generating matrix 10 can be increased as much as possible, which is more conducive to improving the consistency of aerosol extraction and release.

[0107] Furthermore, for the square second air channel 10a2, the sum of the surface areas S1 of the side walls of all the first air channels 10a1 may account for 0.5% to 40% (including the endpoint values) of the sum of the surface areas S of the side walls of all the air channels 10a, that is, S1 / S = 0.5% to 40%. For example, S1 / S may be 0.5%, 5%, 10%, 15%, 20%, 30%, 40%, etc.

[0108] The sum of the surface areas S1 of the side walls of all the first air channels 10a1 accounts for 0.5% to 40% of the sum of the surface areas S of the side walls of all the air channels 10a, so that the first air channels 10a1 and the second air channels 10a2 can be distributed relatively evenly. After the aerosol generating matrix 10 is heated, rapid heat transfer can be achieved to achieve rapid release of aerosol, thereby significantly improving the aerosol generation efficiency.

[0109] In addition, by controlling the sizes of the first air channel 10a1 and the square second air channel 10a2, the suction resistance of the aerosol generating matrix 10 can be adjusted and the release amount of the aerosol can be changed to meet different inhalation requirements.

[0110] In one embodiment, please refer to Figure 6 The outer edge of the cross section of the aerosol generating substrate 10 perpendicular to the first direction is located on the circumference of the same waist circle, and the interior of the aerosol generating substrate 10 has a plurality of second air channels 10a2, and the cross-sectional shape of each second air channel 10a2 can be a rhombus.

[0111] The diamond-shaped second air channel 10a2 can also make full use of the internal space of the aerosol generating matrix 10 whose cross-sectional shape is roughly oval, so that as many second air channels 10a2 as possible can be arranged inside the aerosol generating matrix 10. In this way, the porosity of the aerosol generating matrix 10 can be increased as much as possible, which is more conducive to improving the consistency of aerosol extraction and release.

[0112] Furthermore, for the diamond-shaped second air channel 10a2, the sum of the surface areas S1 of the side walls of all the first air channels 10a1 can account for 0.5% to 60% (including the endpoint values) of the sum of the surface areas S of the side walls of all the air channels 10a, that is, S1 / S = 0.5% to 60%. For example, S1 / S can be 0.5%, 5%, 10%, 15%, 20%, 30%, 40%, 50%, 60%, etc.

[0113] The sum of the surface areas S1 of the side walls of all the first air channels 10a1 accounts for 0.5% to 60% of the sum of the surface areas S of the side walls of all the air channels 10a, so that the first air channels 10a1 and the second air channels 10a2 can be distributed relatively evenly. After the aerosol generating matrix 10 is heated, rapid heat transfer can be achieved to achieve rapid release of aerosol, thereby significantly improving the aerosol generation efficiency.

[0114] In addition, by controlling the sizes of the first air channel 10a1 and the diamond-shaped second air channel 10a2, the suction resistance of the aerosol generating matrix 10 can be adjusted and the release amount of the aerosol can be changed to meet different inhalation requirements.

[0115] In one embodiment, please refer to Figure 7 and Figure 8 , each skeleton 11 is combined to form a skeleton structure 11A having a first outer surface 11A1, a second outer surface 11A2 and a third outer surface 11A3, the first outer surface 11A1 and the second outer surface 11A2 are respectively located at opposite ends of the skeleton structure 11A along the first direction, and the third outer surface 11A3 is located between the first outer surface 11A1 and the second outer surface 11A2. The third outer surface 11A3 has a first area 11A31 and a second area 11A32, and the aerosol generating substrate can also be provided with an outer skin 12, the outer skin 12 is covered in the first area 11A31, and each first air channel 10a1 is located in the second area 11A32. That is, only a part of the outer surface of the aerosol generating substrate 10 is provided with the first air channel 10a1.

[0116] The number of the first areas 11A31 and the second areas 11A32 can be set as needed, that is, the number of the first areas 11A31 can be one or more, and the number of the second areas 11A32 can be one or more.

[0117] See also Figure 7 , the first region 11A31 and the second region 11A32 may extend from the first outer surface 11A1 to the second outer surface 11A2, respectively.

[0118] See also Figure 8 , the first area 11A31 is located on one side of the second area 11A32 along the first direction.

[0119] Providing the outer skin 12 can increase the heat transfer efficiency of the aerosol generating matrix 10 from the outside to the inside or from the inside to the outside, so as to improve the stability of aerosol release.

[0120] Further, for an aerosol generating substrate 10 having an outer skin 12 and a plurality of second air channels 10a2 therein, the sum of the surface areas S1 of the side walls of all the first air channels 10a1 may account for 0.5% to 15% (including the end value) of the sum of the surface areas S of the side walls of all the air channels 10a, that is, S1 / S=0.5% to 15%. For example, S1 / S may be 0.5%, 5%, 10%, 15%, etc. Figure 7 and Figure 8 The airway 10a corresponding to the location where the outer skin 12 is set (ie, the airway 10a that is blocked by the outer skin 12 and not exposed to the outside of the aerosol generating matrix 10) can be regarded as the second airway 10a2.

[0121] On the premise of providing the outer skin 12, the sum of the surface areas S1 of the side walls of all the first air channels 10a1 accounts for 0.5% to 15% of the sum of the surface areas S of the side walls of all the air channels 10a, so that the first air channels 10a1 and the second air channels 10a2 can be distributed relatively evenly, and the aerosol generating matrix 10 can achieve rapid release of aerosol through rapid heat transfer after being heated, thereby significantly improving the aerosol generation efficiency.

[0122] In one embodiment, please refer to Figure 1 The third outer surface 11A3 may also be exposed, that is, the aerosol generating substrate 10 may also be without the outer skin 12, and any area of ​​the third outer surface 11A3 will not be blocked by the outer skin 12.

[0123] In one embodiment, please refer to Figures 9 to 11 The cross-sectional shape of the aerosol generating substrate 10 perpendicular to the first direction may be radially extending from the center to the surroundings, and each skeleton 11 is constructed in a radial shape, and a first airway 10a1 is formed between two adjacent skeletons 11.

[0124] The aerosol generating substrate 10 having a radial cross-sectional shape can reduce the overall weight of the aerosol generating substrate 10 , increase the surface area of ​​the side wall of the first air channel 10 a 1 , and further improve the utilization rate of the aerosol generating substrate 10 .

[0125] Please continue reading Figures 9 to 11 The interior of the radial aerosol generating substrate 10 may be as follows Fig. 9 and Fig.10 As shown, the second airway 10a2 is not provided, and the Fig.11 The second air passage 10a2 is shown to be provided.

[0126] For the aerosol generating matrix 10 provided with the second air channel 10a2, the sum S1 of the surface areas of the side walls of all the first air channels 10a1 may be greater than or equal to 50% of the sum S of the surface areas of the side walls of all the air channels 10a, and less than 90%, that is, 50% ≤ S1 / S < 90%. For example, S1 / S may be 50%, 60%, 70%, 80%, 89%, etc.

[0127] The sum S1 of the surface areas of the side walls of all the first air channels 10a1 is greater than or equal to 50% of the sum S of the surface areas of the side walls of all the air channels 10a, and less than 90%. This can increase the proportion of the surface area of ​​the side walls of the first air channels 10a1, so as to facilitate rapid heat transfer through the side walls of the first air channels 10a1 after the aerosol generating matrix 10 is heated, thereby enabling the aerosol generating matrix 10 to quickly generate aerosol.

[0128] In one embodiment, please refer to Fig.12 , for ease of description, we can Fig.12 The skeletons 11 in the structure are respectively referred to as the first skeleton 11′ and the second skeleton 11″, and the number of the first skeleton 11′ and the second skeleton 11″ are both multiple. The multiple first skeletons 11′ surround a skeleton body 11B having a hollow space inside, one end of each second skeleton 11″ along the second direction is located in the hollow space, and the other end of each second skeleton 11″ along the second direction is located outside the skeleton body 11B, and the second direction is perpendicular to the first direction. Each second skeleton 11″ separates a second airway 10a2 in the hollow space, and the first airway 10a1 is formed between the parts of two adjacent second skeletons 11″ located outside the skeleton body 11B. In other words, multiple skeletons 11 can be combined to form a special-shaped structure.

[0129] The skeleton 11 of the aerosol generating matrix 10 can form a stable supporting structure, so that the aerosol generating matrix 10 is not prone to collapse, deformation and other problems.

[0130] For further information, see Fig.12 The aerosol generating matrix 10 can be provided with four first skeletons 11' and four second skeletons 11", the cross-sectional shape of the skeleton body 11B perpendicular to the first direction is a square, each second skeleton 11" is connected at one end located in the hollow space, and each second skeleton 11" extends from the position of the skeleton body 11B corresponding to each corner of the square to the outside of the skeleton body 11B. That is to say, the four second skeletons 11" can separate the second airway 10a2 with a triangular cross-sectional shape, thereby better improving the structural stability of the aerosol generating matrix 10.

[0131] It should be noted that the number of the first skeleton 11′ and the second skeleton 11″ is not limited to four, and the cross-sectional shape of the second air duct 10a2 is not limited to a triangle. The number and combination of the first skeleton 11′ and the second skeleton 11″ can be adjusted as needed, as long as the multiple first skeletons 11′ can enclose a skeleton body 11B with a hollow space inside, each second skeleton 11″ separates the second air duct 10a2 in the hollow space, and the first air duct 10a1 is formed between the parts of the two adjacent second skeletons 11″ located outside the skeleton body 11B.

[0132] In addition, the sum S1 of the surface areas of the side walls of all the first air channels 10a1 may be greater than or equal to 30% of the sum S of the surface areas of the side walls of all the air channels 10a, and less than 90%, that is, 30% ≤ S1 / S < 90%. For example, S1 / S may be 30%, 40%, 50%, 70%, 89%, etc. Thus, the proportion of the surface area of ​​the side walls of the first air channels 10a1 can also be increased, so as to facilitate rapid heat transfer through the side walls of the first air channels 10a1 after the aerosol generating matrix 10 is heated, thereby enabling the aerosol generating matrix 10 to quickly generate aerosols.

[0133] In one embodiment, please refer to Figures 13 to 16 The aerosol generating article may be provided with an outer wrapping layer 20 outside the aerosol generating substrate 10. For details, please refer to Figures 13 to 16 The aerosol generating substrate 10 has a first end and a second end along a first direction, and the outer wrapping layer 20 wraps the outer peripheral side of the aerosol generating substrate 10 between the first end and the second end.

[0134] The material of the outer wrapping layer 20 is not limited, for example, including but 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 other materials.

[0135] In one embodiment, please refer to Fig.14 The aerosol generating article may further include a functional segment 30, which is disposed at one end of the aerosol generating substrate 10 along the first direction, and includes at least a filter segment 31 for filtering aerosol. The outer wrapping layer 20 also wraps the outer surface of the functional segment 30.

[0136] The filter section 31 is used to filter the aerosol.

[0137] The material of the filter section 31 includes, but is not limited to, one or more combinations of PE, PLA (Polylactic acid, also known as polylactide), PBAT, PP (Polypropylene, polypropylene), acetate fiber, and acrylic fiber materials.

[0138] It should be noted that the aerosol generating product relies on the aerosol generating substrate 10 to generate aerosol, and the functional section 30 does not generate aerosol.

[0139] In one embodiment, please refer to Fig.15 The functional section 30 may also be provided with a cooling section 32, which is provided between the filtering section 31 and the aerosol generating matrix 10, so as to cool the aerosol before the filtering section 31 filters the aerosol, so as to reduce the temperature of the aerosol and improve the "hot mouth" phenomenon when the user inhales the aerosol.

[0140] The material of the cooling section 32 includes, but is not limited to, one or more combinations of PE, PLA, PBAT, PP, acetate fiber, and acrylic fiber materials.

[0141] The materials of the cooling section 32 and the filtering section 31 may be the same or different.

[0142] In one embodiment, please refer to Fig.16 The functional segment 30 may further include a support segment 33 , which is disposed between the filter segment 31 and the aerosol generating substrate 10 .

[0143] The supporting section 33 is mainly used to provide support for the functional section 30 to improve the structural strength of the functional section 30 , especially the structural strength at high temperatures.

[0144] The functional section 30 may be provided with a filtering section 31 and a supporting section 33, but not a cooling section 32, or may be provided with a filtering section 31, a cooling section 32 and a supporting section 33. For a functional section 30 provided with a cooling section 32, the supporting section 33 may be located between the cooling section 32 and the aerosol generating substrate 10, or may be located on the side of the cooling section 32 away from the aerosol generating substrate 10.

[0145] In one embodiment, please refer to Fig.17 The functional section 30 may also be provided with a suction resistance adjustment section 34, and the suction resistance of the suction resistance adjustment section 34 is different from the suction resistance of the aerosol generating substrate 10. The suction resistance adjustment section 34 may be located between the filter section 31 and the aerosol generating substrate 10, or may be located on the side of the filter section 31 away from the aerosol generating substrate 10. The suction resistance adjustment section 34 is mainly used to adjust the suction resistance to meet different suction requirements.

[0146] The functional section 30 may only include the filtering section 31 and the suction resistance adjusting section 34 , or may include at least one of the cooling section 32 and the supporting section 33 on the basis of the filtering section 31 and the suction resistance adjusting section 34 .

[0147] In some embodiments, the aerosol-generating article may also be provided with only the aerosol-generating substrate 10, but not the functional segment 30. For an aerosol-generating article without the functional segment 30, the aerosol-generating article may also be provided with no outer wrapping layer 20.

[0148] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. means 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 the present application, the schematic representation of the above terms does 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 the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0149] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. An aerosol generating substrate, characterized in that The aerosol generating substrate comprises at least two straight plate-shaped skeletons, all of which together form an integral structure having an airway; The air channel extends from one end of the aerosol generating substrate along a first direction to another opposite end, and the air channel at least includes a first air channel located outside the aerosol generating substrate.

2. The aerosol-generating substrate according to claim 1, characterized in that The airway also includes a second airway located within the interior of the aerosol-generating substrate.

3. The aerosol-generating substrate according to claim 2, characterized in that The cross-sectional shape of the first air passage is a portion of the cross-sectional shape of the second air passage.

4. The aerosol-generating substrate according to claim 1, characterized in that The outer edge of the cross section of the aerosol generating substrate perpendicular to the first direction is located on the circumference of the same circle, ellipse or waist circle.

5. The aerosol-generating substrate according to claim 4, characterized in that The air channel further includes a plurality of second air channels located inside the aerosol generating substrate, and the cross-sectional shape of each of the second air channels is square or diamond.

6. The aerosol-generating substrate according to claim 5, characterized in that The outer edges of the cross-section of the aerosol generating substrate perpendicular to the first direction are located on the circumference of the same circle; The cross-sectional shape of the second air channel is a square, and the sum of the surface areas of the side walls of all the first air channels accounts for 0.5% to 30% of the sum of the surface areas of the side walls of all the air channels; or, The cross-sectional shape of the second air channels is a rhombus, and the sum of the surface areas of the side walls of all the first air channels accounts for 0.5% to 50% of the sum of the surface areas of the side walls of all the air channels.

7. The aerosol-generating substrate according to claim 5, characterized in that The outer edge of the cross section of the aerosol generating substrate perpendicular to the first direction is located on the circumference of the same waist circle; The cross-sectional shape of each of the second air channels is square, and the sum of the surface areas of the side walls of all the first air channels accounts for 0.5% to 40% of the sum of the surface areas of the side walls of all the air channels; or, The cross-sectional shape of each of the second air channels is a rhombus, and the sum of the surface areas of the side walls of all the first air channels accounts for 0.5% to 60% of the sum of the surface areas of the side walls of all the air channels.

8. An aerosol generating substrate according to any one of claims 1 to 7, characterized in that Each of the skeletons is combined to form a skeleton structure having a first outer surface, a second outer surface and a third outer surface, wherein the first outer surface and the second outer surface are respectively located at two opposite ends of the skeleton structure along the first direction, and the third outer surface is located between the first outer surface and the second outer surface; The third outer surface has a first area and a second area, the aerosol generating matrix further comprises an outer skin, the outer skin is coated on the first area, and each of the first air channels is located in the second area.

9. The aerosol-generating substrate according to claim 8, characterized in that The first region and the second region extend from the first outer surface to the second outer surface respectively; or, The first area is located at one side of the second area along the first direction.

10. An aerosol generating substrate according to any one of claims 1 to 7, characterized in that Each of the skeletons is combined to form a skeleton structure having a first outer surface, a second outer surface and a third outer surface. The first outer surface and the second outer surface are respectively located at opposite ends of the skeleton structure along the first direction, and the third outer surface is located between the first outer surface and the second outer surface, and the third outer surface is exposed.

11. The aerosol-generating substrate according to claim 8, characterized in that The air channel further comprises a plurality of second air channels located inside the aerosol generating substrate, and the sum of the surface areas of the side walls of all the first air channels accounts for 0.5% to 15% of the sum of the surface areas of the side walls of all the air channels.

12. The aerosol-generating substrate of claim 1, wherein The cross-sectional shape of the aerosol generating matrix perpendicular to the first direction is radially extending from the center to the surroundings, each of the skeletons constructs the radial shape, and the first airway is formed between two adjacent skeletons.

13. The aerosol-generating substrate according to claim 11, characterized in that The air channel further comprises a second air channel located inside the aerosol generating substrate, and the sum of the surface areas of the side walls of all the first air channels is greater than or equal to 50% and less than 90% of the sum of the surface areas of the side walls of all the air channels.

14. The aerosol-generating substrate of claim 2, wherein: The skeleton comprises a plurality of first skeletons and a plurality of second skeletons, wherein the plurality of first skeletons surround a skeleton body having a hollow space inside, one end of each of the second skeletons along a second direction is located in the hollow space, and the other end of each of the second skeletons along the second direction is located outside the skeleton body, wherein the second direction is perpendicular to the first direction; Each of the second skeletons separates the second air channel in the hollow space, and the first air channel is formed between the parts of two adjacent second skeletons located outside the skeleton body.

15. The aerosol-generating substrate according to claim 14, characterized in that The number of the first skeleton and the number of the second skeleton are four each, the cross-section of the skeleton main body perpendicular to the first direction is a square, each second skeleton is connected at one end located in the hollow space, and each second skeleton extends from the position of the skeleton main body corresponding to each corner of the square to the outside of the skeleton main body.

16. The aerosol-generating substrate of claim 13, wherein: The sum of the surface areas of the side walls of all the first air channels is greater than or equal to 30% and less than 90% of the sum of the surface areas of the side walls of all the air channels.

17. An aerosol-generating substrate according to any one of claims 1 to 3, characterized in that The aerosol generating substrate has a central symmetric structure relative to a center line extending along the first direction; or, The aerosol generating substrate has an axisymmetric structure relative to an axis perpendicular to the first direction.

18. An aerosol-generating substrate according to any one of claims 1 to 3, characterized in that The aerosol generating substrate is columnar, and the first direction is the elongation direction of the aerosol generating substrate.

19. An aerosol generating article, characterized in that The aerosol generating article comprises an outer wrapping layer and the aerosol generating substrate according to any one of claims 1 to 18, wherein the aerosol generating substrate has a first end and a second end along the first direction, and the outer wrapping layer wraps the outer peripheral side of the aerosol generating substrate between the first end and the second end.

20. An aerosol-generating article according to claim 19, wherein The aerosol generating product further comprises a functional segment, which is arranged at one end of the aerosol generating substrate along the first direction, and the functional segment at least comprises a filtering segment for filtering aerosol; the outer wrapping layer also wraps the outer surface of the functional segment.

21. An aerosol-generating article according to claim 20, characterized in that The functional section further comprises a cooling section, wherein the cooling section is located between the filtering section and the aerosol generating substrate; and / or, The functional section further comprises a support section, wherein the support section is located between the filter section and the aerosol generating substrate.

22. An aerosol-generating article according to claim 20 or 21, characterized in that The functional section further comprises a draw resistance adjusting section, wherein the draw resistance of the draw resistance adjusting section is different from the draw resistance of the aerosol generating substrate; The draw resistance adjusting section is located between the filter section and the aerosol generating substrate; or, The suction resistance adjusting section is located on a side of the filtering section away from the aerosol generating substrate.

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