Cooling segment and aerosol-generating article

Abstract

The application provides a cooling section and an aerosol generating article, wherein the cooling section comprises a pipe body and a structural member; the pipe body has a first opening and a second opening at opposite ends in a first direction; the structural member is in a separate structure with the pipe body, and is arranged in the pipe body to form a variable-diameter passage in the pipe body, which is in communication with the first opening and the second opening respectively, and the variable-diameter passage comprises at least a first passage section penetrating through the structural member. The cooling section can improve the cooling effect and extraction efficiency of the aerosol, and is convenient to manufacture.

Description

Technical Field

[0001] This application relates to the field of smoke generation technology, and in particular to a cooling section and an aerosol generating product. Background Technology

[0002] Aerosol generating products generally produce aerosols by heating without combustion. Specifically, the aerosol generating product is equipped with an aerosol generating matrix section. The aerosol generating product is heated by heating elements in the aerosol generating device until the aerosol generating matrix section is heated to a level sufficient to emit fragrance, but the aerosol generating matrix section does not burn.

[0003] Because the aerosols generated after heating the aerosol generation matrix section have a high temperature, in order to avoid the unpleasant experience of hot aerosols causing users to experience burning, irritation, burning, or dryness, aerosol generation products generally need to be equipped with a cooling section, through which the aerosols pass to reduce their temperature.

[0004] To maximize aerosol extraction and ensure a large and stable vapor volume per extraction, the cooling section needs to minimize aerosol rejection. However, due to manufacturing difficulties and other factors, the cooling sections in related technologies often have a relatively simple structure, resulting in poor compatibility between the cooling section and the aerosol generation matrix section, thus affecting the cooling effect and extraction efficiency of aerosols. Summary of the Invention

[0005] In view of this, the embodiments of this application aim to provide a cooling section and aerosol generation product that can improve the cooling effect and extraction efficiency of aerosols, and is also easy to process and manufacture.

[0006] To achieve the above objectives, embodiments of this application provide a cooling section for aerosol-generating products, characterized in that it includes:

[0007] A tube body, wherein the tube body has a first opening and a second opening at opposite ends along a first direction;

[0008] The structural component is separate from the tube body. The structural component is disposed inside the tube body to construct a variable diameter channel that communicates with the first opening and the second opening respectively. The variable diameter channel includes at least a first channel segment that penetrates the structural component.

[0009] In one embodiment, there are multiple structural components, which are sequentially connected along the first direction and arranged from the first opening to the second opening; the flow area of ​​the first channel segment penetrating at least one of the structural components is not equal to the flow area of ​​the first channel segment penetrating the other structural components.

[0010] In one embodiment, the variable diameter channel further includes a second channel segment enclosed by the pipe body, the second channel segment being arranged along the first direction with the structural member and communicating with the first channel segment.

[0011] In one embodiment, the structural member is located on one side of the second channel segment along the first direction; or,

[0012] The number of the second channel segments is two, and the structural component is disposed between the two second channel segments; or,

[0013] There are multiple second channel segments and multiple structural components, and the second channel segments and the structural components are alternately arranged along the first direction.

[0014] In one embodiment, the number of structural components is at least three, and the at least three structural components include a first structural component and second structural components located on opposite sides of the first structural component along the first direction, wherein the flow area of ​​the first channel segment on the first structural component is greater than or less than the flow area of ​​the first channel segment on the second structural component; or,

[0015] The number of the structural components is multiple, and the flow area of ​​the first channel segment on each structural component increases or decreases sequentially in the direction away from the first opening.

[0016] In one embodiment, the internal space of the tube accommodating the structural member has a uniform cross-section; and / or,

[0017] The first channel segment has a constant cross-section structure or a variable cross-section structure.

[0018] In one embodiment, the first channel segment is located inside the structural member; or,

[0019] The first channel segment is located on the outer surface of the structural member; or,

[0020] The number of first channel segments penetrating the same structural member is multiple, with some first channel segments located inside the structural member and others located on the outer surface of the structural member.

[0021] In one embodiment, the first channel segment passes through the center of the structural member; or,

[0022] The structural member has a first region passing through its center, and multiple first channel segments penetrating the same structural member surround the outer periphery of the first region; or,

[0023] The number of first channel segments penetrating the same structural member is at least three, with one first channel segment penetrating the center of the structural member and the other first channel segments located on the outer periphery of the first channel segment penetrating the center of the structural member; or,

[0024] The number of first channel segments penetrating the same structural member is multiple, and the multiple first channels are randomly distributed.

[0025] In one embodiment, the cooling section has pores that are connected to the variable diameter channel.

[0026] In one embodiment, the structural component is interference-fitted or bonded to the tube body.

[0027] In one embodiment, at least one of the tube body and the structural member is made of paper; or,

[0028] The tube body and at least one of the structural components are made of one or more of the following materials: PET, silicone, cellulose acetate, bamboo fiber, polypropylene fiber, soybean fiber, chitosan fiber, ceramic, aluminum foil paper tube, and polylactic acid.

[0029] In one embodiment, the wall thickness of the tube is 0.1 mm to 0.4 mm; and / or,

[0030] The length of the tube along the first direction is 7mm to 40mm; and / or,

[0031] The length of the structural component along the first direction is 3mm to 40mm; and / or,

[0032] The aperture of the first channel section is 0.5mm to 10mm.

[0033] Another embodiment of this application provides an aerosol generating article, comprising:

[0034] Aerosol generation matrix segment;

[0035] A functional section is provided at one end of the aerosol generating matrix section, the functional section including the cooling section described above, and the first opening of the tube body faces the aerosol generating matrix section;

[0036] An outer wrapping layer is provided, which wraps around the outer periphery of the functional segment and the aerosol generating matrix segment.

[0037] In one embodiment, the functional section further includes a filtration section, which is disposed at the end of the cooling section away from the aerosol generating matrix.

[0038] In one embodiment, the aerosol generating article further includes a cleaning section, which is disposed at one end of the aerosol generating matrix away from the cooling section.

[0039] In one embodiment, the length of the aerosol-generated article along the first direction is 40 mm to 90 mm; and / or,

[0040] The outer diameter of the aerosol-generated product is 3mm to 8mm.

[0041] This application provides a cooling section and an aerosol generation product. The cooling section is equipped with a variable-diameter channel with varying flow area. Since the variable-diameter channel causes strong turbulence in the aerosol, the use of a variable-diameter channel in the cooling section can improve the cooling effect and extraction efficiency of the aerosol. Furthermore, the cooling section constructs the variable-diameter channel by incorporating structural components within a pipe body. This method allows for adjustments not only to the number of structural components and the number of first channel segments on the same structural component, but also to the length of the structural components along the first direction, their placement within the pipe body, and the placement of the first channel segments on the same structural component. Additionally, the pipe body and structural components can be made of different materials as needed. Therefore, the cooling section of this application can be manufactured into various variable-diameter channels as required, reducing the difficulty of manufacturing variable-diameter channels while allowing for the production of variable-diameter channels compatible with various aerosol generation matrix sections. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of the first aerosol-generating article according to an embodiment of this application;

[0043] Figure 2 for Figure 1 The diagram shown is a structural schematic of an aerosol-generated product with the outer coating layer omitted.

[0044] Figure 3 for Figure 1 The cross-sectional view of the aerosol-generated product is shown. The dashed arrows in the figure indicate the flow direction of the aerosol.

[0045] Figure 4 for Figure 3 A cross-sectional view of the first cooling section shown;

[0046] Figure 5 for Figure 4 A cross-sectional schematic diagram of the structural component of the first embodiment shown;

[0047] Figure 6 This is a cross-sectional schematic diagram of the structural component according to the second embodiment of this application;

[0048] Figure 7 This is a cross-sectional schematic diagram of the structural component according to the third embodiment of this application;

[0049] Figure 8 This is a cross-sectional schematic diagram of the structural component according to the fourth embodiment of this application;

[0050] Figure 9 This is a cross-sectional schematic diagram of the structural component according to the fifth embodiment of this application;

[0051] Figure 10 This is a cross-sectional schematic diagram of the structural component according to the sixth embodiment of this application;

[0052] Figure 11 A cross-sectional view of the second cooling section in an embodiment of this application;

[0053] Figure 12 A cross-sectional view of the third cooling section in an embodiment of this application;

[0054] Figure 13 A cross-sectional view of the fourth cooling section in an embodiment of this application;

[0055] Figure 14 A cross-sectional view of the fifth cooling section in an embodiment of this application;

[0056] Figure 15 This is a cross-sectional view of a second aerosol-generating article according to an embodiment of this application;

[0057] Figure 16 for Figure 15 A cross-sectional view of the sixth cooling section shown;

[0058] Figure 17 A cross-sectional view of the seventh cooling section in an embodiment of this application;

[0059] Figure 18 A cross-sectional view of the eighth cooling section in an embodiment of this application;

[0060] Figure 19 A cross-sectional view of the ninth cooling section in an embodiment of this application;

[0061] Figure 20 A cross-sectional view of the tenth cooling section in an embodiment of this application;

[0062] Figure 21 A cross-sectional view of the eleventh cooling section in an embodiment of this application;

[0063] Figure 22 This is a cross-sectional view of a third aerosol-generating article according to an embodiment of this application.

[0064] Explanation of reference numerals in the attached figures

[0065] 10. Aerosol generation matrix section; 10a. Airway; 20. Functional section; 21. Cooling section; 21a. Variable diameter channel; 21a1. First channel section; 21a2. Second channel section; 21b. Pore; 211. Tube body; 211a. First opening; 211b. Second opening; 212. Structural component; 212a. First structural component; 212b. Second structural component; 22. Filtration section; 30. Outer wrapping layer; 30a. Clearance opening; 40. Cleaning section. Detailed Implementation

[0066] In the description of the embodiments in this application, it should be noted that the orientation or positional relationship indicated by terms such as "first direction" is based on the appendix. Figure 3 The orientations or positional relationships shown are for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0067] This application provides an aerosol-generating article; please refer to [link / reference]. Figures 1 to 3 The aerosol generating article includes an aerosol generating matrix segment 10, a functional segment 20, and an outer coating layer 30. The functional segment 20 is disposed at one end of the aerosol generating matrix segment 10, and the outer coating layer 30 is wrapped around the outer periphery of the functional segment 20 and the aerosol generating matrix segment 10.

[0068] After being heated and atomized by the heating element of the aerosol generating matrix section 10, the aerosol is released for users to inhale or for use in medicine, beauty, etc.

[0069] There are various heating methods for the heating element. For example, heating methods include center heating and peripheral heating. Center heating refers to the heating element being inserted into the interior of the aerosol generating matrix section 10 to bake and heat the aerosol generating matrix section 10. Peripheral heating refers to the heating element being positioned around the periphery of the aerosol generating matrix section 10 to bake and heat the aerosol generating matrix section 10. These heating methods may specifically include resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, etc., and are not specifically limited here.

[0070] The specific structure of the aerosol generating matrix segment 10 is not limited here. Exemplarily, the aerosol generating matrix segment 10 can be made of the atomizing medium itself, such as a smoky flavoring medium. In other embodiments, the aerosol generating matrix segment 10 may also include a matrix and an atomizing medium disposed on the matrix. The matrix may be, for example, high-temperature resistant carbon fiber. In this way, by providing a matrix, the strength of the aerosol generating matrix segment 10 can be improved, and it can withstand a certain degree of high temperature without producing odor.

[0071] The specific composition of the aerosol generating matrix segment 10 is not limited here. For example, in one embodiment, the aerosol generating matrix segment 10 may include plant components, auxiliary components, smoke generating components, adhesive components, etc.

[0072] In one embodiment, the plant-based ingredients are one or more combinations of raw tobacco leaves, tobacco fragments, tobacco stems, tobacco dust, and aromatic plants, which are powdered after being crushed. The plant-based ingredients are the core source of the product's aroma. Endogenous substances in the plant-based ingredients, such as nicotine, enter the bloodstream through atomization, promoting the pituitary gland to produce dopamine, thereby generating a sense of physiological satisfaction.

[0073] In one embodiment, the auxiliary component can 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 provide skeletal support for the plant components, and their micropores increase the porosity of the wall material after molding, thereby improving the aerosol release rate.

[0074] Lubricants include one or more of the following: candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase the flowability of particles, reduce friction between particles, result in a more uniform overall particle density, and also reduce the pressure required for mold forming, thus reducing mold wear.

[0075] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can, to some extent, slow down the loss of flavor substances during storage, increase the stability of flavor substances, and improve the sensory quality of the product. Emulsifiers (also known as surfactants) can reduce the interfacial tension between water-soluble and water-insoluble components in a mixture, and form a more robust film on the surface of microdroplets or an electric double layer on the surface of microdroplets due to the charge given by the emulsifier, preventing microdroplets from agglomerating and maintaining a homogeneous emulsion. Homogenizing two immiscible components through emulsification can improve the consistency of product quality.

[0076] The function of the smoke-generating agent is to produce a large amount of vapor upon heating, thereby increasing the amount of smoke in the smoke-generating product. In one embodiment, the smoke-generating agent may include, for example, one or more combinations of: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butanediol, and glycerol); an ester of a polyhydric alcohol (such as glyceryl monoacetate, glyceryl diacetate, or glyceryl triacetate); a monocarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid) or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanoate, dimethyl tetradecanoate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl lauryl acetate, triacetin, meso-erythritol, a mixture of diacetins, diethyl caprylate, triethyl citrate, methyl benzoate, phenylacetic acid methyl ester, ethyl vanillate, glyceryl tributate, and lauryl acetate).

[0077] In one embodiment, the adhesive component is a natural plant extract, a non-ionic modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan polysaccharide, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive achieves close contact with the product component materials through wetting at the interface, generating intermolecular attraction, thereby binding the powder, liquid, or other components. Furthermore, the use of a natural plant extract and a non-ionic adhesive avoids the release of harmful substances such as methanol, formaldehyde, and acrolein associated with colloidal modification, thus improving the safety of the product.

[0078] For example, the aerosol generating matrix segment 10 can be a particulate aggregate, which is a reconstituted tobacco medium, such as a reconstituted tobacco medium containing smoke-generating agents, tobacco, and other components. The particulate aggregate aerosol generating matrix segment 10 remains an integral medium after being heated and inhaled or after heating is stopped, and is not prone to disintegration and falling off. This solves the problems of thin sheet-like, filamentous, or loose particulate aerosol generating matrix segments in the prior art, such as loose sheet-like components, shedding of filamentous components, particulate components, and difficulty in cleaning.

[0079] The shape of the aerosol generating matrix segment 10 is not limited. For example, the aerosol generating matrix segment 10 can be columnar. The cross-sectional shape of the columnar aerosol generating matrix segment 10 can be circular, polygonal (including but not limited to triangle, square, rhombus, etc.), elliptical, racetrack-shaped, irregular, etc., where irregular refers to other symmetrical or asymmetrical shapes other than those listed above.

[0080] Please see Figure 3 The interior of the aerosol generating matrix section 10 may also have at least one airway 10a, which extends through at least one of the opposite ends of the aerosol generating matrix section 10 (i.e., the end closer to the functional section 20 and the end away from the functional section 20).

[0081] Figure 3 The airway 10a in the aerosol generating matrix section 10 passes through both ends of the aerosol generating matrix section 10. In some embodiments, the airway 10a may also pass through only one end of the aerosol generating matrix section 10 that is close to the functional section 20, while the other end is a closed end. Alternatively, the airway 10a may also pass through only one end of the aerosol generating matrix section 10 that is away from the functional section 20, while the other end is a closed end.

[0082] Compared to the airway 10a penetrating one end of the aerosol generation matrix segment 10, the airway 10a penetrating both ends of the aerosol generation matrix segment 10 is more conducive to reducing the suction resistance of the user's aspiration.

[0083] The number of airway 10a can be one or more.

[0084] Airway 10a can be as follows Figure 3 The straight airway shown is an airway 10a that extends in a straight line, or in other words, the direction of extension of the straight airway is a straight line.

[0085] Airway 10a can also be a spiral airway. A spiral airway is an airway 10a in which at least a portion of its extension direction has a non-zero curvature. For example, along the extension direction of the spiral airway, it can have a structure with both curved segments with non-zero curvature and straight segments with zero curvature, or it can have only curved segments with non-zero curvature and no straight segments with zero curvature. In other words, from the starting point to the ending point of the spiral airway along the extension direction, the spiral airway only needs to not extend along a straight line.

[0086] When there are multiple airways 10a, some airways 10a can be straight airways, and other airways 10a can be spiral airways.

[0087] The shape of the cross-section of the airway 10a is not limited. For example, the shape of the cross-section can be circular, polygonal (including but not limited to triangle, square, rhombus, etc.), elliptical, racetrack-shaped, or irregular.

[0088] by Figure 3 Taking the aerosol generating product shown as an example, when the aerosol generating matrix section 10 is heated, the aerosol generating matrix section 10 releases aerosols. Since at least some micropores or gaps in the wall material of the aerosol generating matrix section 10 are connected to the air passage 10a, the aerosols released by the aerosol generating matrix section 10 when heated can enter the air passage 10a through the micropores or gaps connected to the air passage 10a, and flow from the air passage 10a to the functional section 20.

[0089] Please continue reading. Figure 3 and Figure 4 , Figures 11 to 22Functional section 20 includes a cooling section 21, which includes a tube body 211 and a structural component 212. The tube body 211 has a first opening 211a and a second opening 211b at opposite ends along a first direction. The structural component 212 is a separate structure from the tube body 211. The structural component 212 is disposed inside the tube body 211 to construct a variable diameter channel 21a within the tube body 211 that communicates with the first opening 211a and the second opening 211b, respectively. The variable diameter channel 21a includes at least a first channel section 21a1 that penetrates the structural component 212.

[0090] Specifically, the variable diameter channel 21a is a channel with a variable flow area (the flow area refers to the area of ​​the cross section of the variable diameter channel 21a perpendicular to its own extension direction). In other words, the flow area of ​​the variable diameter channel 21a at least one location is not equal to the flow area at other locations.

[0091] The variable diameter channel 21a is used to allow aerosols to pass through, so that the aerosols are cooled in the variable diameter channel 21a.

[0092] Please see Figure 3 and Figure 4 The first opening 211a of the tube body 211 of the cooling section 21 faces the aerosol generation matrix section 10. During the user's suction process, the aerosol enters the variable diameter channel 21a from the first opening 211a, cools down in the variable diameter channel 21a, flows out from the second opening 211b, and flows into the user's mouth.

[0093] Because of the change in flow area of ​​the variable-diameter channel 21a, strong turbulence is generated within the channel as the aerosol flows through it. This allows the aerosol to collide more violently with the air in the larger flow area, enabling the air to absorb heat from the aerosol more effectively. Conversely, the aerosol accumulates better and its flow velocity increases in the smaller flow area. This improves both the concentration and flowability of the aerosol. Therefore, compared to a straight channel with no change in flow area, the variable-diameter channel 21a in the cooling section 21 improves the cooling effect and extraction efficiency of the aerosol.

[0094] Please continue reading. Figure 3 and Figure 4 , Figures 11 to 22In this embodiment, the cooling section 21 is constructed by setting a structural member 212 inside the tube body 211 to create a variable diameter channel 21a. Before the structural member 212 is set inside the tube body 211, the structural member 212 and the tube body 211 are two separate components. That is, the structural member 212 and the tube body 211 are not integrally formed structures, but are assembled to form an integral structure.

[0095] The assembly method of the structural component 212 and the tube body 211 is not limited. For example, the structural component 212 can be interference-fitted with the tube body 211, or the structural component 212 can be bonded to the tube body 211.

[0096] The number of structural components 212 can be one or more.

[0097] The specific number of structural components 212 and their arrangement within the tube body 211 can be adjusted according to specific design requirements. For example, the specific number of structural components 212 and their arrangement within the tube body 211 can be determined based on whether the structure of the variable diameter channel 21a can reduce the temperature of the aerosol to 50°C or below, and / or whether the structure of the variable diameter channel 21a can enable the aerosol extraction efficiency to reach the set target.

[0098] Please see Figure 3 and Figure 4 To facilitate the processing and manufacturing of structural component 212 and tube body 211, and to facilitate the assembly of structural component 212 and tube body 211, it is preferable that the internal space of tube body 211 accommodating structural component 212 can be a uniform cross-section structure, that is, the cross-sectional area of ​​the internal space of tube body 211 accommodating structural component 212 is equal at any position.

[0099] The wall thickness of the tube 211 can be designed as needed. However, if the wall thickness of the tube 211 is too small, the support of the tube 211 will be poor and it will be inconvenient to process and manufacture. If the wall thickness of the tube 211 is too large, it will be inconvenient to set up the structural component 212. Therefore, it is preferable that the wall thickness of the tube 211 can be 0.1mm to 0.4mm (including the end value). For example, the wall thickness of the tube 211 can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, etc.

[0100] The length of the tube body 211 along the first direction can be designed as needed. However, if the length of the tube body 211 along the first direction is too short, the variable diameter channel 21a will also be relatively short, and the cooling effect of the variable diameter channel 21a will be relatively poor. If the length of the tube body 211 along the first direction is too long, the variable diameter channel 21a will also be relatively long, and the aerosol will flow in the variable diameter channel 21a for a longer time, thus affecting the extraction efficiency. Therefore, more preferably, the length of the tube body 211 along the first direction can be 40mm to 90mm (including the end value). For example, the length of the tube body 211 along the first direction can be 40mm, 50mm, 60mm, 80mm, 90mm, etc.

[0101] The length of the structural component 212 along the first direction can be designed as needed. However, if the length of the structural component 212 along the first direction is too short, it will be inconvenient to process and manufacture. If the length of the structural component 212 along the first direction is too long, it will affect the extraction efficiency of aerosols. Therefore, more preferably, the length of the structural component 212 along the first direction can be 3mm to 40mm (including the endpoint value). For example, the length of the structural component 212 along the first direction can be 3mm, 5mm, 10mm, 20mm, 30mm, 40mm, etc.

[0102] The material of the tube body 211 can be paper, or it can be one or more of the following: polyethylene terephthalate, silicone, cellulose acetate, bamboo fiber, polypropylene fiber, soybean fiber, chitosan fiber, ceramic, aluminum foil paper tube, and polylactic acid.

[0103] The material of structural component 212 can be paper, or it can be one or more of the following: PET (polyethylene terephthalate), silicone, cellulose acetate, bamboo fiber, polypropylene fiber, soybean fiber, chitosan fiber, ceramic, aluminum foil paper tube, and polylactic acid.

[0104] The tube body 211 and the structural component 212 can be made of the same material or different materials.

[0105] Please see Figures 5 to 10 The number of first channel segments 21a1 that run through the same structural member 212 can be one or more.

[0106] When there are multiple structural components 212 installed inside the pipe body 211, the number of first channel segments 21a1 on each structural component 212 can be the same or different.

[0107] The shape of the cross section of the first channel segment 21a1 can be circular, polygonal (including but not limited to triangle, square, rhombus, etc.), elliptical, racetrack-shaped, irregular, etc. Among them, irregular refers to other symmetrical or asymmetrical shapes other than those listed above.

[0108] Please see Figure 3 and Figure 4 The first channel segment 21a1 can be a structure with a constant cross-section, that is, the flow area of ​​the first channel segment 21a1 is equal at any position.

[0109] The first channel segment 21a1 adopts a uniform cross-section structure, which is not only easy to process and manufacture, but also reduces the risk of blockage in the first channel segment 21a1.

[0110] The first channel segment 21a1 can also be a variable cross-section structure (e.g. Figure 11 The first channel segment 21a1 on the uppermost and lowermost structural members 212 has a variable cross-section structure, which means that the flow area of ​​the first channel segment 21a1 varies, that is, the flow area at at least one location of the first channel segment 21a1 is not equal to the flow area at other locations.

[0111] It should be noted that, unless otherwise specified, the flow area of ​​the first channel segment 21a1 described in the embodiments of this application refers to the flow area of ​​a single first channel segment 21a1. That is, when there are multiple first channel segments 21a1 penetrating the same structural member 212, the flow area of ​​the first channel segment 21a1 refers to the flow area of ​​any one of the multiple first channel segments 21a1.

[0112] The first channel section 21a1 adopts a variable cross-section structure, which allows for greater variation in the flow area of ​​the variable diameter channel 21a, thereby meeting more design requirements.

[0113] When there are multiple structural components 212, all the first channel segments 21a1 can be of equal cross-section, all the first channel segments 21a1 can be of variable cross-section, or some of the first channel segments 21a1 on the structural components 212 can be of equal cross-section, while the first channel segments 21a1 on the other part of the structural components 212 can be of variable cross-section.

[0114] When there are multiple first channel segments 21a1 that pass through the same structural member 212, all first channel segments 21a1 can be of equal cross-section, all first channel segments 21a1 can be of variable cross-section, or some first channel segments 21a1 can be of equal cross-section and others can be of variable cross-section.

[0115] The aperture of the first channel section 21a1 can be designed as needed. However, if the aperture is too small, the first channel section 21a1 is prone to blockage. If the aperture is too large, it will reduce the flow rate of the aerosol. Therefore, more preferably, the aperture of the first channel section 21a1 can be 0.5mm to 10mm (including the endpoint value). For example, the aperture of the first channel section 21a1 can be 0.5mm, 1mm, 2mm, 3mm, 5mm, 8mm, 10mm, etc.

[0116] It should be noted that the orifice diameter refers to the dimension used to calculate the flow area of ​​the first channel section 21a1. When the cross-sectional shape of the first channel section 21a1 is circular, the orifice diameter refers to the diameter of the cross-section. When the cross-sectional shape of the first channel section 21a1 is non-circular, there are generally multiple dimensions for calculating the flow area, and the orifice diameter refers to the largest of these dimensions. Furthermore, for a first channel section 21a1 with a constant cross-section, the orifice diameter is a specific numerical value. For a first channel section 21a1 with a variable cross-section, both the maximum and minimum values ​​of the orifice diameter fall within the aforementioned range.

[0117] Please see Figures 5 to 9 The first channel segment 21a1 can be located inside the structural member 212. Please refer to [link / reference]. Figure 10 and Figure 14 The first channel segment 21a1 can also be located on the outer surface of the structural member 212.

[0118] When there are multiple first channel segments 21a1 penetrating the same structural member 212, all first channel segments 21a1 may be located inside the structural member 212, all first channel segments 21a1 may be located on the outer surface of the structural member 212, or some first channel segments 21a1 may be located inside the structural member 212 and other first channel segments 21a1 may be located on the outer surface of the structural member 212.

[0119] Please see Figure 10 and Figure 14 For the first channel segment 21a1 located on the outer surface of the structural member 212, the first channel segment 21a1 is actually a groove-shaped structure that passes through the outer surface of the structural member 212. However, since the structural member 212 is disposed inside the tube body 211, the slot of the first channel segment 21a1 facing the inner wall of the tube body 211 will be blocked by the inner wall of the tube body 211. Therefore, aerosol can still flow along the first channel segment 21a1.

[0120] The specific arrangement of the first channel segment 21a1 on the structural member 212 can be adjusted as needed. For example, please refer to... Figure 5 and Figure 6 The first channel segment 21a1 can penetrate through the center of the structural member 212.

[0121] The ratio of the flow area of ​​the first channel section 21a1 to the cross-sectional area of ​​the structural component 212 can be designed as needed. For example, the ratio of the flow area of ​​the first channel section 21a1 to the cross-sectional area of ​​the structural component 212 can be 0.05 to 0.85 (including the endpoint value). For example, the ratio of the flow area of ​​the first channel section 21a1 to the cross-sectional area of ​​the structural component 212 can be 0.05, 0.1, 0.2, 0.5, 0.8, 0.85, etc.

[0122] In some heating methods, aerosols will first flow out from the central region of the aerosol generation matrix section 10 (such as the aerosol generation matrix section 10 heated by the central heating method). For this type of aerosol generation matrix section 10, the first channel section 21a1 penetrates the center of the structural component 212, which allows the aerosols to enter the first channel section 21a1 in time for cooling, thereby improving the aerosol extraction efficiency.

[0123] For example, please refer to Figure 6 Structural member 212 has a first region Z passing through the center of structural member 212 (i.e., Figure 6 (The area within the dashed box) For a structural member 212 having multiple first channel segments 21a1, the multiple first channel segments 21a1 can surround the outer periphery of the first region Z, wherein the multiple first channel segments 21a1 can be surrounded in one circle or in multiple circles.

[0124] Additionally, please see Figure 10 , Figure 10 Each of the first channel segments 21a1 is located on the outer surface of the structural member 212. This arrangement is equivalent to multiple first channel segments 21a1 surrounding the outer periphery of the first region Z.

[0125] The ratio of the sum of the flow areas of each first channel segment 21a1 to the cross-sectional area of ​​the structural member 212 can be designed as needed. For example, the ratio of the sum of the flow areas of each first channel segment 21a1 to the cross-sectional area of ​​the structural member 212 can be 0.05 to 0.5 (including the endpoint value). For example, the ratio of the sum of the flow areas of each first channel segment 21a1 to the cross-sectional area of ​​the structural member 212 can be 0.05, 0.1, 0.2, 0.3, 0.5, etc.

[0126] In some heating methods, aerosols will first flow out from near the outer wall of the aerosol generation matrix section 10 (such as the aerosol generation matrix section 10 heated by a peripheral heating method). For this type of aerosol generation matrix section 10, multiple first channel sections 21a1 surround the outer periphery of the first region of the structural member 212, which can also enable aerosols to enter the first channel section 21a1 in time for cooling, thereby improving the aerosol extraction efficiency.

[0127] For example, please refer to Figure 8 The number of first channel segments 21a1 that penetrate the same structural member 212 can be at least three, one of which penetrates the center of the structural member 212, and the other first channel segments 21a1 are located on the outer periphery of the first channel segment 21a1 that penetrates the center of the structural member 212.

[0128] The ratio of the sum of the flow areas of each first channel segment 21a1 to the cross-sectional area of ​​the structural member 212 can be designed as needed. For example, the ratio of the sum of the flow areas of each first channel segment 21a1 to the cross-sectional area of ​​the structural member 212 can be 0.3 to 0.9 (including the endpoint values). For instance, the ratio of the sum of the flow areas of each first channel segment 21a1 to the cross-sectional area of ​​the structural member 212 can be 0.3, 0.4, 0.5, 0.7, 0.9, etc.

[0129] Under certain heating methods, aerosols can flow out more evenly from various parts of the aerosol generation matrix section 10. Therefore, one of the first channel sections 21a1 on the structure 212 penetrates the center of the structure 212, while the other first channel sections 21a1 are located on the outer periphery of the first channel section 21a1 that penetrates the center of the structure 212. This allows the aerosols flowing out from various parts of the aerosol generation matrix section 10 to enter the first channel section 21a1 in a timely manner for cooling, thereby improving the aerosol extraction efficiency.

[0130] For example, please refer to Figure 9 For a structural component 212 with multiple first channel segments 21a1, the multiple first channels can also be randomly distributed.

[0131] The ratio of the sum of the flow areas of each first channel segment 21a1 to the cross-sectional area of ​​the structural member 212 can be designed as needed. For example, the ratio of the sum of the flow areas of each first channel segment 21a1 to the cross-sectional area of ​​the structural member 212 can be 0.3 to 0.9 (including the endpoint values). For instance, the ratio of the sum of the flow areas of each first channel segment 21a1 to the cross-sectional area of ​​the structural member 212 can be 0.3, 0.4, 0.5, 0.7, 0.9, etc.

[0132] The structural components 212, which are randomly distributed among multiple first channel segments 21a1, are also suitable for use with the aerosol generation matrix segment 10, which allows aerosols to flow out relatively evenly from various parts of the aerosol generation matrix segment 10.

[0133] The variable diameter channel 21a may consist only of a first channel segment 21a1 that penetrates the structural member 212, for example, please refer to Figure 3 , Figure 4 , Figures 11 to 14 Multiple structural components 212 can be installed inside the pipe body 211. These components are sequentially connected along a first direction, extending from the first opening 211a to the second opening 211b. The flow area of ​​the first channel segment 21a1 penetrating at least one of the structural components 212 is not equal to the flow area of ​​the first channel segments 21a1 penetrating the other structural components 212. In other words, the first channel segments 21a1 penetrating each structural component 212 are sequentially connected to form a variable-diameter channel 21a.

[0134] Please see Figure 4 , Figures 11 to 14 The number of structural components 212 can be at least three. These at least three structural components 212 include a first structural component 212a and second structural components 212b located on opposite sides of the first structural component 212a along the first direction. That is, second structural components 212b are respectively provided on opposite sides of the first structural component 212a along the first direction. The number of first structural components 212a can be one or more. The first structural component 212a and the second structural component 212b are distinguished by their names for ease of description; it can be understood that both the first structural component 212a and the second structural component 212b are actually structural components 212.

[0135] For example, please refer to Figure 4 , Figure 11 and Figure 14 The flow area of ​​the first channel segment 21a1 on the first structural member 212a can be greater than the flow area of ​​the first channel segment 21a1 on the second structural member 212b. The flow areas of the first channel segment 21a1 on different second structural members 212b can be equal or unequal.

[0136] Specifically, with Figure 4 , Figure 11 and Figure 14 Taking the cooling section 21 with three structural components 212 as an example, the middle structural component 212 is the first structural component 212a, and the other two structural components 212 are the second structural components 212b. Figure 4 and Figure 14The first channel segment 21a1 on the first structural member 212a and the first channel segment 21a1 on the second structural member 212b shown are both of uniform cross-section structure. Figure 11 The first channel segment 21a1 on the first structural member 212a shown is a constant cross-section structure, while the first channel segment 21a1 on the second structural member 212b is a variable cross-section structure. Figure 4 , Figure 11 and Figure 14 In the first structural member 212a, the flow area of ​​the first channel segment 21a1 is greater than the flow area of ​​the first channel segment 21a1 on both second structural members 212b. The flow areas of the first channel segment 21a1 on the two second structural members 212b can be equal or unequal. Specifically, for second structural members 212b where the first channel segment 21a1 is a variable cross-section structure, if the maximum flow area of ​​the first channel segment 21a1 is less than or equal to the flow area of ​​the first channel segment 21a1 on the first structural member 212a, then the flow area of ​​the first channel segment 21a1 on the first structural member 212a can be considered greater than the flow area of ​​the first channel segment 21a1 on the second structural member 212b.

[0137] The flow area of ​​the first channel section 21a1 on the first structural component 212a is larger than that of the first channel section 21a1 on the second structural component 212b. This allows the flow velocity of aerosol in the first channel section 21a1 on the second structural component 212b to be greater than that in the first channel section 21a1 on the first structural component 212a. During the user's suction process, the aerosol can quickly enter the first channel section 21a1 on the first structural component 212a from the first channel section 21a1 on the second structural component 212b near the first opening 211a for cooling. After cooling, the aerosol can then quickly flow out from the first channel section 21a1 on the second structural component 212b near the second opening 211b, thereby improving the aerosol extraction efficiency.

[0138] Additionally, please see Figure 11 When the first channel segment 21a1 on the second structural member 212b is a variable cross-section structure, preferably, the flow area of ​​the first channel segment 21a1 on the second structural member 212b near the first opening 211a can gradually increase in the direction closer to the first structural member 212a, and the flow area of ​​the first channel segment 21a1 on the second structural member 212b near the second opening 211b can gradually decrease in the direction away from the first structural member 212a, so as to better guide the aerosol to flow smoothly and steadily in the variable diameter channel 21a.

[0139] For example, please refer to Figure 12 and Figure 13The flow area of ​​the first channel segment 21a1 on the first structural member 212a can also be smaller than the flow area of ​​the first channel segment 21a1 on the second structural member 212b. The flow areas of the first channel segment 21a1 on different second structural members 212b can be equal or unequal.

[0140] Specifically, with Figure 12 and Figure 13 Taking the cooling section 21 with three structural components 212 as an example, the middle structural component 212 is the first structural component 212a, and the other two structural components 212 are the second structural components 212b. Figure 12 The first channel segment 21a1 on the first structural member 212a and the first channel segment 21a1 on the second structural member 212b shown are both of uniform cross-section structure. Figure 13 The first channel segment 21a1 on the first structural member 212a shown is a constant cross-section structure, while the first channel segment 21a1 on the second structural member 212b is a variable cross-section structure. Figure 12 and Figure 13 In the first structural member 212a, the flow area of ​​the first channel segment 21a1 is smaller than the flow area of ​​the first channel segment 21a1 on both second structural members 212b. The flow areas of the first channel segment 21a1 on the two second structural members 212b can be equal or unequal. Specifically, for a second structural member 212b where the first channel segment 21a1 is a variable cross-section structure, if the minimum flow area of ​​the first channel segment 21a1 is greater than or equal to the flow area of ​​the first channel segment 21a1 on the first structural member 212a, then the flow area of ​​the first channel segment 21a1 on the first structural member 212a can be considered smaller than the flow area of ​​the first channel segment 21a1 on the second structural member 212b.

[0141] The flow area of ​​the first channel section 21a1 on the first structural component 212a is smaller than that of the first channel section 21a1 on the second structural component 212b. The first channel section 21a1 on the first structural component 212a and the first channel section 21a1 on the second structural component 212b together form a structure similar to a Venturi tube. The flow velocity of aerosol in the first channel section 21a1 on the first structural component 212a is greater than that in the first channel section 21a1 on the second structural component 212b, which is also conducive to further improving the cooling effect and extraction efficiency of aerosol.

[0142] Additionally, please see Figure 13When the first channel segment 21a1 on the second structural member 212b is a variable cross-section structure, preferably, the flow area of ​​the first channel segment 21a1 on the second structural member 212b near the first opening 211a can gradually decrease towards the first structural member 212a, and the flow area of ​​the first channel segment 21a1 on the second structural member 212b near the second opening 211b can gradually increase towards the distance from the first structural member 212a. This arrangement can make the first channel segment 21a1 on the first structural member 212a and the first channel segment 21a1 on the second structural member 212b form a structure closer to a Venturi tube, and the flow of aerosol in the variable diameter channel 21a is more stable and smooth, which is also more conducive to improving the cooling effect and extraction efficiency of aerosol.

[0143] It is understood that the first structural member 212a and the second structural member 212b are not limited to the structural forms described in the above embodiments. For example, in some other embodiments, the first channel segment 21a1 on the first structural member 212a may be a variable cross-section structure, and the first channel segment 21a1 on the second structural member 212b may be a constant cross-section structure. Alternatively, the first channel segment 21a1 on the first structural member 212a may be a constant cross-section structure or a variable cross-section structure. A portion of the first channel segment 21a1 on the second structural member 212b may be a variable cross-section structure, while another portion of the first channel segment 21a1 on the second structural member 212b may be a constant cross-section structure. Alternatively, both the first channel segment 21a1 on the first structural member 212a and the first channel segment 21a1 on the second structural member 212b may be variable cross-section structures.

[0144] Furthermore, the first channel segment 21a1 is not limited to the arrangement described in the above embodiments. For example, in some other embodiments, the number of structural members 212 can be two or more, and the flow area of ​​the first channel segment 21a1 on each structural member 212 can be increased sequentially in the direction away from the first opening 211a. That is to say, the flow velocity of aerosol in the first channel segment 21a1 on the structural member 212 near the first opening 211a is faster, and the flow velocity in the first channel segment 21a1 on the structural member 212 away from the first opening 211a is slower. This is equivalent to the aerosol being able to enter the variable diameter channel 21a more quickly, which is beneficial to improving the extraction efficiency of aerosol. Alternatively, the flow area of ​​the first channel section 21a1 on each structural component 212 can be gradually reduced in the direction away from the first opening 211a. That is to say, the flow velocity of aerosol in the first channel section 21a1 on the structural component 212 near the first opening 211a is slower, and the flow velocity in the first channel section 21a1 on the structural component 212 away from the first opening 211a is faster. This is equivalent to the aerosol being cooled in the variable diameter channel 21a first, and then flowing out of the variable diameter channel 21a more quickly, which is conducive to improving the cooling effect of the aerosol.

[0145] In some other embodiments, the number of structural members 212 may also be one. However, since the variable diameter channel 21a has only one first channel segment 21a1, the first channel segment 21a1 should adopt a variable cross-section structure.

[0146] Please continue reading. Figures 15 to 22 In another embodiment, the variable diameter channel 21a may include, in addition to the first channel segment 21a1, a second channel segment 21a2 enclosed by the pipe body 211. The second channel segment 21a2 and the structural member 212 are arranged along a first direction and communicate with the first channel segment 21a1. That is, some spaces within the pipe body 211 are not provided with the structural member 212, and these spaces without the structural member 212 form the second channel segment 21a2 of the variable diameter channel 21a.

[0147] The arrangement of the second channel segment 21a2 and the structural member 212 along the first direction is not limited. For example, please refer to [reference needed]. Figure 16 and Figure 17 The structural component 212 can be located on one side of the second channel segment 21a2 along the first direction. Figure 16 and Figure 17 The structural member 212 shown is located between the second channel segment 21a2 and the first opening 211a. In other embodiments, the structural member 212 may also be located between the second channel segment 21a2 and the second opening 211b. Furthermore, the number of structural members 212 may be as follows: Figure 16 One shown can also be like... Figure 17 The diagram shows multiple structures connected in sequence.

[0148] For example, please refer to Figure 18 and Figure 19 The number of second channel segments 21a2 can be two, and the structural member 212 is disposed between the two second channel segments 21a2. The number of structural members 212 located between the two second channel segments 21a2 can be as follows: Figure 18 One shown can also be like... Figure 19 The diagram shows multiple sections connected in sequence. The structural member 212 is positioned between two second channel segments 21a2, or the first channel segment 21a1 on the structural member 212 and the two second channel segments 21a2 can together form a structure similar to a venturi tube.

[0149] For example, please refer to Figure 20 and Figure 21 The number of the second channel segment 21a2 and the structural component 212 can both be multiple, and the second channel segment 21a2 and the structural component 212 are alternately arranged along the first direction.

[0150] For a cooling section 21 having multiple structural components 212, the structural form of the upper first channel section 21a1 of each structural component 212 can be the same as or similar to the structural form of the first channel section 21a1 on each structural component 212 described in the previous embodiments.

[0151] for example, Figures 19 to 21 The cooling section 21 shown is also provided with three structural components 212. Among the three structural components 212, the middle structural component 212 is the first structural component 212a, and the other two structural components 212 are the second structural components 212b. The structural form of the first channel segment 21a1 on the first structural component 212a and the first channel segment 21a1 on the second structural component 212b can be the same as or similar to the structural form of the first channel segment 21a1 on the first structural component 212a and the first channel segment 21a1 on the second structural component 212b described in the previous embodiment.

[0152] In addition, since the structural component 212 is located inside the pipe body 211, the flow area of ​​the first channel section 21a1 is generally smaller than that of the second channel section 21a2. Therefore, when there are multiple structural components 212 and the first channel section 21a1 on each structural component 212 is of equal cross-section, the flow area of ​​the first channel section 21a1 on each structural component 212 can be equal.

[0153] Please continue reading. Figure 3 , Figure 4 , Figures 11 to 22 The cooling section 21 can also be provided with an air hole 21b that communicates with the variable diameter channel 21a. The air hole 21b is used to allow the external airflow to enter the variable diameter channel 21a under the action of negative pressure during the user's suction process. The airflow entering the variable diameter channel 21a mixes with the aerosol in the variable diameter channel 21a and flows into the user's mouth.

[0154] The airflow enters the variable diameter channel 21a through the vent 21b, which can heat the aerosol generation matrix section 10 under low oxygen conditions and release aerosols, thereby reducing the impurities in the generated aerosols and improving the aerosol's sucking experience.

[0155] The specific arrangement of the vent 21b is related to the position and formation method of the variable diameter channel 21a. For example, for a variable diameter channel 21a that only has a first channel segment 21a1, please refer to [reference needed]. Figure 4 If the first channel segment 21a1 is located inside the structural member 212, then the vent 21b needs to penetrate both the pipe body 211 and the structural member 212. Please refer to [link / reference]. Figure 14If the first channel segment 21a1 is located on the outer surface of the structural member 212, then the vent 21b only needs to penetrate the pipe body 211. If there are multiple first channel segments 21a1 penetrating the same structural member 212, with some first channel segments 21a1 located inside the structural member 212 and others located on the outer surface of the structural member 212, then the vent 21b also needs to penetrate both the pipe body 211 and the structural member 212.

[0156] For the variable diameter channel 21a with the second channel segment 21a2, please refer to Figures 15 to 22 Since the vent 21b can communicate with the variable diameter channel 21a by connecting with the second channel segment 21a2, for a variable diameter channel 21a with the second channel segment 21a2, it is preferable that the vent 21b penetrates the pipe body 211 and communicates with the second channel segment 21a2. In other embodiments, the vent 21b may also communicate with the first channel segment 21a1.

[0157] Additionally, please see Figure 3 Since the outer wrapping layer 30 is wrapped around the outer periphery of the functional section 20, the outer wrapping layer 30 generally needs to be provided with a clearance opening 30a to allow airflow to pass through, so that the air vent 21b can communicate with the outside.

[0158] In other embodiments, the tube body 211 may not have vents 21b. For example, external airflow may pass through the aerosol generating matrix section 10 away from the functional section 20 and enter the variable diameter channel 21a under the action of negative pressure.

[0159] Please continue reading. Figure 2 and Figure 3 In addition to the cooling section 21, the functional section 20 may also include a filter section 22, which is located at the end of the cooling section 21 away from the aerosol generation matrix.

[0160] The filter section 22 is designed to come into contact with the user's mouth during inhalation to filter the aerosol.

[0161] The materials of the filter section 22 include, but are not limited to, one or more combinations of PE, PLA (Polylactic acid), PBAT, PP (Polypropylene), cellulose acetate, and propylene fiber.

[0162] In other embodiments, functional segment 20 may also omit the filter segment 22. For example, the aerosol generating device may be equipped with a nozzle that can be reused or used only once. The nozzle may be used in conjunction with an aerosol generating product that does not have a filter segment 22 to replace the filter segment 22.

[0163] In other embodiments, functional segment 20 may also be provided with other segments besides cooling segment 21 and filtering segment 22. For example, functional segment 20 may also be provided with a support segment, which is mainly used to provide support for functional segment 20 to improve the structural strength of functional segment 20, especially the structural strength at high temperature.

[0164] For example, the support segment can have good structural strength at a high temperature of at least 200°C.

[0165] In some scenarios, the support section can also provide a certain amount of suction resistance.

[0166] The materials for the support section include, but are not limited to, cellulose acetate, PET, plant fibers, and non-plant fibers.

[0167] The support section can be set between the cooling section 21 and the aerosol generation matrix section 10, or it can be set at the end of the cooling section 21 away from the aerosol generation matrix section 10.

[0168] Please see Figure 22 The aerosol generating product can also be provided with a cleaning section 40, which is located at one end of the aerosol generating matrix away from the cooling section 21, so as to prevent the aerosol generating matrix section 10 from shrinking and falling off after heating and to adsorb the backflowing aerosol.

[0169] In other embodiments, the aerosol-generating article may not have a cleaning section 40.

[0170] Please continue reading. Figure 1 and Figure 3 The material of the outer wrapping layer 30 is not limited. For example, the outer wrapping layer 30 includes, but is not limited to, one or more of the following materials: fiber paper, metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, PE (polyethylene), PBAT (butylene adipate-co-terephthalate).

[0171] In addition, the length of the aerosol-generating product along the first direction can be designed as needed. However, in order to facilitate user suction, it is preferable that the length of the aerosol-generating product along the first direction can be 40mm to 90mm (including the endpoint value). For example, the length of the aerosol-generating product along the first direction can be 40mm, 50mm, 60mm, 80mm, 90mm, etc.

[0172] The outer diameter of the aerosol-generating product can also be designed as needed. However, in order to facilitate adaptation to the user's oral cavity, it is preferable that the outer diameter of the aerosol-generating product can be 3mm to 8mm (including the endpoint value). For example, the outer diameter of the aerosol-generating product can be 3mm, 5mm, 6mm, 8mm, etc.

[0173] It should be noted that the outer diameter refers to the dimension used to calculate the cross-sectional area of ​​the aerosol-generating product. When the cross-sectional shape of the aerosol-generating product is circular, the outer diameter refers to the diameter of the cross-section. When the cross-sectional shape of the aerosol-generating product is non-circular, there are generally multiple dimensions for calculating the cross-sectional area, and the outer diameter refers to the largest of these dimensions.

[0174] In related technologies, due to manufacturing difficulties and other factors, the cooling section generally uses an airflow channel with a constant cross-section for cooling. The structure of the cooling section is relatively simple, and the cooling effect of the airflow channel with a constant cross-section is poor, making it difficult to adapt to the aerosol generation matrix section that uses different heating methods.

[0175] In this embodiment, the cooling section 21 is provided with a variable-diameter channel 21a with varying flow area. Since the variable-diameter channel 21a causes strong turbulence in the aerosol, the use of a variable-diameter channel 21a in the cooling section 21 can improve the cooling effect and extraction efficiency of the aerosol. In addition, if the pipe body 211 with the variable-diameter channel 21a is directly manufactured without the structural component 212, the manufacturing difficulty of the variable-diameter channel 21a is high. This is especially true when the flow area of ​​the variable-diameter channel 21a needs to be changed at multiple locations, making it even more difficult to manufacture a suitable variable-diameter channel 21a. Therefore, for aerosol generating matrix sections 10 using different heating methods, this method makes it difficult to manufacture a variable-diameter channel 21a that is compatible with various aerosol generating matrix sections 10. In this embodiment, the cooling section 21 constructs a variable diameter channel 21a by placing a structural component 212 inside the tube body 211. This method not only allows for the addition or reduction of the number of structural components 212 and the number of first channel segments 21a1 on the same structural component 212 according to specific needs, but also allows for the adjustment of the length of the structural component 212 along the first direction, the adjustment of the placement position of the structural component 212 inside the tube body 211, and the placement position of the first channel segments 21a1 on the same structural component 212. In addition, the tube body 211 and the structural component 212 can be made of different materials as needed. Therefore, the cooling section 21 in this embodiment can be processed into various different variable diameter channels 21a as needed. While reducing the difficulty of processing and manufacturing the variable diameter channel 21a, it is also possible to process and manufacture variable diameter channels 21a that are compatible with various aerosol generation matrix sections 10.

[0176] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in other embodiments," "in yet another embodiment," or "exemplary," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0177] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A cooling section for aerosol-generating products, characterized in that, include: A tube body, wherein the tube body has a first opening and a second opening at opposite ends along a first direction; The structural component is separate from the tube body. The structural component is disposed inside the tube body to construct a variable diameter channel that communicates with the first opening and the second opening respectively. The variable diameter channel includes at least a first channel segment that penetrates the structural component.

2. The cooling section according to claim 1, characterized in that, The number of structural components is multiple, and the multiple structural components are connected sequentially along the first direction and arranged from the first opening to the second opening; the flow area of ​​the first channel segment penetrating at least one of the structural components is not equal to the flow area of ​​the first channel segment penetrating the other structural components.

3. The cooling section according to claim 1, characterized in that, The variable diameter channel also includes a second channel segment enclosed by the pipe body, the second channel segment being arranged along the first direction with the structural member and communicating with the first channel segment.

4. The cooling section according to claim 3, characterized in that, The structural component is located on one side of the second channel segment along the first direction; or, The number of the second channel segments is two, and the structural component is disposed between the two second channel segments; or, There are multiple second channel segments and multiple structural components, and the second channel segments and the structural components are alternately arranged along the first direction.

5. The cooling section according to claims 1-4, characterized in that, The number of the structural components is at least three, and the at least three structural components include a first structural component and second structural components located on opposite sides of the first structural component along the first direction. The flow area of ​​the first channel segment on the first structural component is greater than or less than the flow area of ​​the first channel segment on the second structural component; or, The number of the structural components is multiple, and the flow area of ​​the first channel segment on each structural component increases or decreases sequentially in the direction away from the first opening.

6. The cooling section according to any one of claims 1-4, characterized in that, The internal space of the tube housing the structural component has a uniform cross-section; and / or, The first channel segment has a constant cross-section structure or a variable cross-section structure.

7. The cooling section according to any one of claims 1-4, characterized in that, The first channel segment is located inside the structural member; or, The first channel segment is located on the outer surface of the structural member; or, The number of first channel segments penetrating the same structural member is multiple, with some first channel segments located inside the structural member and others located on the outer surface of the structural member.

8. The cooling section according to any one of claims 1-4, characterized in that, The first channel segment passes through the center of the structural member; or, The structural member has a first region passing through its center, and multiple first channel segments penetrating the same structural member surround the outer periphery of the first region; or, The number of first channel segments penetrating the same structural member is at least three, with one first channel segment penetrating the center of the structural member and the other first channel segments located on the outer periphery of the first channel segment penetrating the center of the structural member; or, The number of first channel segments penetrating the same structural member is multiple, and the multiple first channels are randomly distributed.

9. The cooling section according to any one of claims 1-4, characterized in that, The cooling section has pores, which are connected to the variable diameter channel.

10. The cooling section according to any one of claims 1-4, characterized in that, The structural component is either interference-fitted or bonded to the tube body.

11. The cooling section according to any one of claims 1-4, characterized in that, The material of at least one of the tube body and the structural component is paper; or, The tube body and at least one of the structural components are made of one or more of the following materials: PET, silicone, cellulose acetate, bamboo fiber, polypropylene fiber, soybean fiber, chitosan fiber, ceramic, aluminum foil paper tube, and polylactic acid.

12. The cooling section according to any one of claims 1-4, characterized in that, The wall thickness of the tube is 0.1 mm to 0.4 mm; and / or, The length of the tube along the first direction is 7mm to 40mm; and / or, The length of the structural component along the first direction is 3mm to 40mm; and / or, The aperture of the first channel section is 0.5mm to 10mm.

13. An aerosol-generating product, characterized in that, include: Aerosol generation matrix segment; A functional segment is disposed at one end of the aerosol generating matrix section, the functional segment including the cooling section as described in any one of claims 1-12, and the first opening of the tube body faces the aerosol generating matrix section; An outer wrapping layer is provided, which wraps around the outer periphery of the functional segment and the aerosol generating matrix segment.

14. The aerosol-generating article according to claim 13, characterized in that, The functional section also includes a filtration section, which is located at the end of the cooling section away from the aerosol generating matrix.

15. The aerosol-generating article according to claim 13 or 14, characterized in that, The aerosol generating product further includes a cleaning section, which is located at one end of the aerosol generating matrix away from the cooling section.

16. The aerosol-generating article according to claim 13 or 14, characterized in that, The length of the aerosol-generated product along the first direction is 40mm to 90mm; and / or, The outer diameter of the aerosol-generated product is 3mm to 8mm.

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