Aerosol generating product and aerosol generating system

Abstract

The embodiment of the invention provides an aerosol generating product and an aerosol generating system. The aerosol generating product comprises a wrapping layer, a filtering section, a cooling section and a medium section, the medium section is used for generating aerosol, and the medium section is of an integrated structure; the cooling section is arranged between the filtering section and the medium section, the part, located between the medium section and the filtering section, of the wrapping layer is a first wrapping section, the cooling section is arranged in the first wrapping section, the first wrapping section is provided with a first air inlet hole penetrating through the first wrapping section in the thickness direction, the cooling section is provided with an air guide channel, and the air guide channel is communicated with the first air inlet hole. According to the aerosol generating product provided by the embodiment of the invention, air in the external environment enters from the first air inlet hole instead of directly entering through the medium section, the temperature consistency during atomization of the medium section is improved, the cooling section guides the airflow to the filtering section on one hand, and on the other hand, the aerosol can be cooled, so that the atomization effect is improved. The use temperature of the aerosol is more appropriate, and the structure of the aerosol generating product is reasonable and reliable.

Description

Technical Field

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

[0002] In recent years, with the advancement of the global tobacco control movement, new tobacco products represented by heated non-burning tobacco products have become increasingly popular among users.

[0003] Heat-not-burn tobacco products are also called aerosol-generating products, which have a medium segment made of an aerosol-generating substrate inside. Aerosol-generating products are usually used in conjunction with an aerosol-generating device. The heating component in the aerosol-generating device can heat the medium segment to a temperature high enough to generate aerosol by atomization without combustion. The aerosol is discharged from the aerosol-generating device for the user to inhale.

[0004] In the related art, during the inhalation process, air from the external environment directly enters through the medium segment, causing large changes in the temperature of the medium segment, unstable cracking reactions of the aerosol-generating matrix, and differences in the composition of the generated aerosol, which affects the user experience. Summary of the invention

[0005] In view of this, the embodiments of the present application hope to provide an aerosol generating product and an aerosol generating system, in which the air in the external environment does not directly pass through the medium segment, and the atomization consistency is high, so that the user experience is better.

[0006] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0007] The present application provides an aerosol generating product, comprising:

[0008] A filtering section, a cooling section, and a medium section, wherein the medium section is used to generate aerosol, and the medium section is an integrated structure;

[0009] A wrapping layer, wrapping around the circumferential outer surface of the filtering section, the cooling section and the medium section;

[0010] The cooling section is arranged between the filtering section and the medium section, and the portion of the wrapping layer between the medium section and the filtering section is the first wrapping section. The cooling section is arranged in the first wrapping section, and the first wrapping section has a first air inlet hole passing through it. The cooling section has an air guide channel, and the air guide channel is connected to the first air inlet hole.

[0011] In some embodiments, the medium segment has at least one airway hole, which passes through at least one end of the medium segment close to the cooling segment along the length direction, and the airway hole is used to guide the aerosol generated by the medium segment to the air guide channel.

[0012] In some embodiments, the cooling section is a hollow tubular structure having an inner wall and an outer wall, the inner wall enclosing a hollow central channel, and the side wall of the cooling section is provided with a second air inlet hole, the second air inlet hole at least passes through the outer wall, and the second air inlet hole is connected to the first air inlet hole.

[0013] In some embodiments, the structure between the inner wall surface and the outer wall surface is a solid structure, and the second air inlet hole passes through the inner wall surface and the outer wall surface.

[0014] In some embodiments, a groove is provided between the inner wall surface and the outer wall surface, passing through at least one end of the cooling section along the length direction, and the second air inlet is connected to the groove.

[0015] In some embodiments, the second air inlet hole passes through the channel and through the inner wall surface.

[0016] In some embodiments, a groove is provided on the circumferential surface of the cooling section, and the groove passes through at least one end of the cooling section. The first air inlet hole is provided in the first wrapping section to cover the portion of the groove, and the groove defines at least a portion of the air guide channel.

[0017] In some embodiments, the cooling section is a silicone member.

[0018] In some embodiments, an aroma substance is provided in the cooling section.

[0019] In some embodiments, the medium section and the cooling section are spaced apart to form a first cavity; and / or, the cooling section and the filtering section are spaced apart to form a second cavity.

[0020] In some embodiments, the first air inlet hole passes through the side wall of the first wrapping section corresponding to the first cavity; or,

[0021] The first air inlet hole passes through the side wall of the first wrapping section corresponding to the second cavity.

[0022] In some embodiments, two ends of the temperature reduction section along the length direction are in contact with the medium section and the filtration section respectively.

[0023] In some embodiments, the number of the first air inlet holes is 4-30.

[0024] In some embodiments, the filter segment is a solid acetate fiber structure, or a polyester resin structure, or a porous structure.

[0025] In some embodiments, the medium segment, the cooling segment and the filtration segment are cylinders with the same outer diameter and are coaxially arranged, and the length direction of the medium segment, the cooling segment and the filtration segment is the axial direction of the medium segment, the cooling segment and the filtration segment.

[0026] The present application provides an aerosol generating device, comprising:

[0027] Heating element;

[0028] And the aerosol generating article described in any embodiment of the present application;

[0029] Wherein, the heating element is used to heat the medium segment to generate aerosol.

[0030] In the aerosol generating product provided in the embodiment of the present application, air from the external environment enters from the first air inlet at the first wrapping section, and the aerosol generated by the atomization of the entrained medium section flows to the filter section instead of directly entering through the medium section, thereby improving the temperature consistency of the medium section during atomization, and reducing the probability of different aerosol components generated due to large changes in the atomization temperature of the medium section caused by the air from the external environment entering directly from the medium section. On the one hand, the cooling section guides the airflow to the filter section, and on the other hand, it can also cool the aerosol, so that the use temperature of the aerosol is more suitable. The filter section filters impurities entrained in the aerosol, thereby improving the user experience. The structural arrangement of the aerosol generating product is reasonable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of an aerosol generating article according to a first embodiment of the present application;

[0032] Figure 2 for Figure 1 A schematic cross-sectional view of an aerosol generating article is shown, wherein the dashed arrow in the figure indicates the direction of air flow;

[0033] Figure 3 is a cross-sectional schematic diagram of an aerosol generating article according to a second embodiment of the present application, wherein the dashed arrow in the figure indicates the direction of air flow;

[0034] Figure 4 for Figure 3 The structural schematic diagram of the cooling section is shown;

[0035] Figure 5 2 is a cross-sectional schematic diagram of an aerosol generating article according to a third embodiment of the present application, wherein the dashed arrow in the figure indicates the direction of air flow;

[0036] Figure 6A partial structural schematic diagram of an aerosol generating article according to a fourth embodiment of the present application, wherein the filter section is omitted in the diagram;

[0037] Figure 7 2 is a cross-sectional schematic diagram of an aerosol generating article according to a fourth embodiment of the present application, wherein the dashed arrow in the figure indicates the direction of air flow;

[0038] Figure 8 2 is a cross-sectional schematic diagram of an aerosol generating article according to a fifth embodiment of the present application, wherein the dashed arrow in the figure indicates the direction of air flow;

[0039] Fig. 9 This is a schematic cross-sectional view of an aerosol generating article according to a sixth embodiment of the present application, wherein the dashed arrow in the figure indicates the direction of airflow.

[0040] Description of Reference Numerals

[0041] 1-Aerosol generating products;

[0042] 10-wrapping layer; 101-first wrapping section; 101a-first air inlet; 101b-first cavity; 101c-second cavity; 102-second wrapping section; 103-third wrapping section;

[0043] 11-medium section; 11a-airway hole; 12-cooling section; 12a-outer wall surface; 12b-inner wall surface; 12c-central channel; 12d-second air inlet hole; 12e-channel; 12f-groove; 13-filter section. DETAILED DESCRIPTION

[0044] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the term "inside" or the like is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying 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.

[0045] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, the meaning of "plurality" refers to two or more.

[0046] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] The present application embodiment provides an aerosol generating product 1, see Figures 1 to 9 , including a wrapping layer 10, a filtering section 13, a cooling section 12 and a medium section 11.

[0048] An embodiment of the present application provides an aerosol generating system, including an aerosol generating device and an aerosol generating product 1 of any embodiment of the present application, the aerosol generating product 1 can be plugged in and out of the aerosol generating device, the aerosol generating device includes a heating element, the heating element is used to heat the medium segment 11 to generate an aerosol, and the aerosol can be discharged from the aerosol generating device for inhalation by a user.

[0049] The medium segment 11 is used to generate aerosol, that is, at least a part of the medium segment 11 is composed of an aerosol-generating substrate, so that the medium segment 11 can be used to generate aerosol for use by a user.

[0050] The specific form of the heating element is not limited, and it can be a resistive heating film, an electromagnetic induction heating element, an infrared heating coating, a laser heating element, etc., and is not limited here.

[0051] The wrapping layer 10 wraps around the circumferential outer surface of the filtering section 13 , the cooling section 12 and the medium section 11 .

[0052] Specifically, during the manufacturing process, the wrapping layer 10 can be directly wrapped on the circumferential outer surface of the filter segment 13, the cooling segment 12 and the medium segment 11 through a rolling process to integrate the filter segment 13, the cooling segment 12 and the medium segment 11 together, thereby improving the overall structural strength of the aerosol generating product 1, reducing the probability of failure caused by separation of various parts of the aerosol generating product 1 during transportation and use, and increasing the reliability of the aerosol generating product 1.

[0053] It is understandable that the wrapping layer 10 has a certain structural strength to reduce the probability of deformation of the aerosol generating product 1 due to airflow pressure during use. The wrapping layer 10 can be an integrated structure or a combined structure.

[0054] The specific material of the wrapping layer 10 is not limited, such as one or more combinations of fiber paper, metal foil, metal foil composite fiber paper, PE (Polyethylene), polyethylene composite fiber paper, PBAT (Poly (butyleneadipate-co-terephthalate, poly (butylene adipate-co-terephthalate)) and the like.

[0055] It should be noted that, when the wrapping layer 10 wraps the entire circumferential outer surface of the filter segment 12, the user can directly hold the wrapping layer 10 in the mouth to use the aerosol; when the wrapping layer 10 wraps part of the circumferential outer surface of the filter segment 12, the user can directly hold the filter segment 12 exposed outside the wrapping layer 10 in the mouth to inhale the aerosol. Of course, the user can also install a suction nozzle on the outer surface of the filter segment 12 and inhale the aerosol through the suction nozzle.

[0056] The medium segment 11 is an integral structure, that is, the medium segment 11 is integrally formed, for example, integrally extruded, integrally injected, integrally die-casted, etc.

[0057] It is understandable that there is a certain force between the medium segment 11 and the wrapping layer 10 to suppress the tendency of the medium segment 11 to move. For example, the outer circumferential surface of the medium segment 11 is in contact with the inner wall of the wrapping layer 10, and the position of the medium segment 11 is fixed by the friction between the outer circumferential surface of the medium segment 11 and the inner wall of the wrapping layer 10, thereby suppressing the movement of the medium segment 11 due to the shaking of the aerosol generating article 11 during transportation and use.

[0058] It can be understood that there is an interference fit or a transition fit between the outer circumferential surface of the medium segment 11 and the inner wall of the wrapping layer 10, so that extrusion occurs between the two to increase the friction force.

[0059] The cooling section 12 is arranged between the filtering section 13 and the medium section 11. The portion of the wrapping layer 10 between the medium section 11 and the filtering section 13 is the first wrapping section 101. The cooling section 12 is arranged in the first wrapping section 101. The first wrapping section 101 has a first air inlet hole 101a passing through the first wrapping section 101 along the thickness direction. The cooling section 12 has an air guide channel, which is connected to the first air inlet hole 101a.

[0060] It should be noted that the air guide channel is a space defined by the cooling section 12 through its own structure, which is used to guide airflow. The airflow can be air in the external environment, or it can be an airflow formed by a mixture of air in the external environment and aerosol. Specifically, after the air in the external environment enters the air guide channel through the first air inlet 101a, it can enter the medium section 11 under the action of the air guide channel. At this time, the air guide channel is used to guide the air in the external environment to enter the medium section 11, and the air in the external environment entrained with the atomized aerosol can flow to the filter section 13 through the air guide channel. At this time, the air guide channel is used to guide the airflow formed by a mixture of air in the external environment and aerosol to the filter section 13.

[0061] That is, during inhalation, the medium segment 11 is heated and atomized, and the air in the external environment enters the air guide channel through the first air inlet 101a, moves toward the medium segment 11, entrains the aerosol generated by the atomization of the medium segment 11, and then moves toward the filter segment 13 through the air guide channel. The first air inlet 101a is arranged in the first wrapping segment 101, that is, the air in the external environment will not directly enter the medium segment 11, so that the temperature consistency of the medium segment 11 during atomization can be improved. The cooling segment 12 guides the airflow to the filter segment 13 for use by the user, and on the other hand, can also reduce the temperature of the aerosol, so that the temperature of the aerosol flowing out of the filter segment 13 is suitable and can be better used by the user.

[0062] It should be noted that, in the embodiment of the present application, the thickness direction of the first wrapping segment 101 is perpendicular to the length direction. Taking the columnar aerosol generating product 1 as an example, the thickness direction refers to the radial direction of the aerosol generating product 1.

[0063] It should be noted that in the embodiment of the present application, the end of the medium section 11 away from the cooling section 12 is in a closed state, so that when inhaled, sufficient negative pressure can be generated to extract aerosol for the user to use. The closed state includes a completely airtight state, i.e., an oxygen-free state, and also includes a small amount of air permeability, i.e., a hypoxic state.

[0064] The end of the medium segment 11 away from the cooling segment 12 is in a closed state. The end of the medium segment 11 away from the cooling segment 12 can be self-closed, that is, the medium segment 11 relies on its own structure to achieve a closed state at the end away from the cooling segment 12; or the medium segment 11 can be assembled and docked with any structure on the aerosol generating device to achieve the closed state of the end of the medium segment 11 away from the cooling segment 12. In this way, during inhalation, the medium segment 11 can be in a negative pressure state to facilitate the extraction of aerosol. In addition, the end of the medium segment 11 away from the cooling segment 12 is in a closed state, which can also reduce the probability of residue generated by the atomization of the medium segment 11 flowing out and causing contamination to the heating element or other structures of the aerosol generating device, and the cleaning of the aerosol generating product 1 is simpler and more convenient.

[0065] It is understood that in some embodiments, please refer to Figure 2 The wrapping layer 10 also includes a second wrapping segment 102 and a third wrapping segment 103. The filter segment 13 is arranged in the second wrapping segment 102, and the medium segment 11 is arranged in the third wrapping segment 103. The first wrapping segment 101, the second wrapping segment 102, and the third wrapping segment 103 together constitute the wrapping layer 10. The first wrapping segment 101, the second wrapping segment 102, and the third wrapping segment 103 can be an integral molding structure, that is, the wrapping layer 10 is an integral structure, the first wrapping segment 101, the second wrapping segment 102, and the third wrapping segment 103 can also be independent components, which are assembled to form the wrapping layer 10, that is, the wrapping layer 10 is a combined structure.

[0066] In the aerosol generating product 1 provided in the embodiment of the present application, air from the external environment enters from the first air inlet 101a at the first wrapping section 101, and entrains the aerosol generated by the atomization of the medium section 11 to flow to the filter section 13 instead of directly entering through the medium section 11, thereby improving the temperature consistency of the medium section 11 during atomization, and reducing the probability of different aerosol components generated due to large changes in the atomization temperature of the medium section 11 caused by the air from the external environment directly entering from the medium section 11. On the one hand, the cooling section 12 guides the airflow to the filter section 13, and on the other hand, it can also cool the aerosol, so that the use temperature of the aerosol is more suitable. The filter section 13 filters impurities entrained in the aerosol, thereby increasing the user experience. The structural arrangement of the aerosol generating product 1 is reasonable and reliable.

[0067] The specific components of the aerosol generating matrix are not limited herein. For example, the aerosol generating matrix may include plant components, auxiliary components, smoke generating agent components, adhesive components, and the like.

[0068] In some embodiments, 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.

[0069] In some embodiments, 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.

[0070] 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.

[0071] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers (also called 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.

[0072] 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.

[0073] In some embodiments, the adhesive component is a natural plant-extracted, non-ionically modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive 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-extracted, 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.

[0074] For some examples, see Figures 2 to 9 The medium segment 11 has at least one airway hole 11a, which passes through at least one end of the medium segment 11 close to the cooling segment 12 along the length direction. The airway hole 11a is used to guide the aerosol generated by the medium segment 11 to the air guide channel.

[0075] In this way, the aerosol generated by the heated atomization of the medium segment 11 can be released directly from the airway holes 11a, and the aerosol has sufficient release space, thereby improving the utilization rate of the aerosol.

[0076] It should be noted that there are many situations in which the airway hole 11a passes through at least one end of the medium section 11 close to the cooling section 12 along the length direction.

[0077] In the first type, the airway hole 11a only passes through one end of the medium segment 11 close to the cooling segment 12, that is, the end of the airway hole 11a close to the cooling segment 12 is in an open state, and the end away from the cooling segment 12 is in a closed state. The airway hole 11a is formed as a blind hole. In this way, the medium segment 11 can rely on its own structure to achieve a closed state at the end away from the cooling segment 12. During inhalation, there can be sufficient negative pressure to extract the aerosol, and the structure of the aerosol generating product 1 is also simpler and more reliable.

[0078] The second type is that the airway hole 11a passes through both ends of the medium segment 11 along the length direction, that is, the end of the airway hole 11a close to the cooling segment 12 is in an open state, and the end away from the cooling segment 12 is also in an open state. The airway hole 11a is formed as a through hole, and the medium segment 11 can be closed at one end of the medium segment 11 away from the cooling segment 12 by assembly and docking with the structure on the aerosol generating device.

[0079] The number of the airway holes 11a is not limited, and can be one, or two or more.

[0080] It should be noted that in the embodiments of the present application, the length direction does not specifically refer to the direction in which the outer contour of the medium segment 11 is the longest. The arrangement direction of the filter segment 13 and the cooling segment 12 is consistent with the length direction; the direction in which the aerosol generating product 1 is inserted into the aerosol generating device and the direction in which the aerosol generating product 1 is taken out of the aerosol generating device are both parallel to the length direction. The dimension of the medium segment 11 along the length direction may be longer, shorter, or the same as the dimension along other directions.

[0081] For example, in some examples, when the appearance of the medium segment 11 is cylindrical, the length direction is the axial direction of the medium segment 11. It should be noted that even if the axial dimension of the medium segment 11 is smaller than its diameter, the length direction of the medium segment 11 is still the axial direction.

[0082] In other examples, when the outer contour of the medium segment 11 is a rectangular parallelepiped, the length direction is still the direction defined above, that is, the arrangement direction of the filtration segment 13 and the cooling segment 12; or, in the direction of taking and placing the aerosol generating product 1, the length direction of the medium segment 11 can be any direction of the length, width, and height of the rectangular parallelepiped.

[0083] It is understandable that micropores are formed in the medium segment 11, and the micropores are connected to form micro airways. Some of the micropores are connected to the airway holes 11a, and the other micro airways directly pass through the air inlet and outlet ends of the medium segment 11. In this way, the aerosol can be discharged from the medium segment 11 in a variety of ways. For example, the aerosol generated by the medium segment 11 after heating can directly enter the airway holes 11a and be carried away by the air in the external environment; or, the air in the external environment directly enters the micro airway and discharges the aerosol carried by the micro airway; or, the aerosol enters the airway hole 11a from the micro airway.

[0084] It is understood that the micropores may be partially connected and partially disconnected, or all micropores may be interconnected. For example, in an embodiment in which the medium segment 11 is a particle combination, the gaps between the particles constitute the micropores, wherein the size of the micropores is determined by the gaps between the particles of the medium segment 11.

[0085] It should be noted that the airway holes 11a are holes in a macroscopic sense and can be identified by the naked eye, while the micropores are holes in a peripheral sense and cannot be identified by the naked eye.

[0086] The airway holes 11a and micropores can increase the surface area of ​​the medium segment 11, facilitate heat transfer, and improve heating efficiency. The aerosol-generating matrix in the medium segment 11 releases aerosol when heated, and is transported to the filter segment 13 under the negative pressure generated by the user's inhalation. The airway holes 11a and micropores can reduce the suction resistance of the user's inhalation, improve the user experience, and reduce the adverse effect of the condensed aerosol remaining in the medium segment 11 on the airflow.

[0087] The specific structure of the air guide channel is not limited.

[0088] For some examples, see Figures 2 to 4 The cooling section 12 is a hollow tubular structure having an inner wall surface 12b and an outer wall surface 12a. The inner wall surface 12b surrounds a hollow central channel 12c. The side wall of the cooling section 12 is provided with a second air inlet hole 12d. The second air inlet hole 12d at least passes through the outer wall surface 12a, and the second air inlet hole 12d is connected to the first air inlet hole 101a.

[0089] That is to say, the air in the external environment can directly enter the cooling section 12 through the second air inlet hole 12d after passing through the first air inlet hole 101a, and the aerosol generated after atomization can enter the filtering section 13 through the central channel 12c. The central channel 12c can extend the flow path and flow area of ​​the aerosol, thereby slowing down the flow rate of the aerosol, thereby achieving a cooling effect, making the use temperature of the aerosol more suitable.

[0090] The second air inlet hole 12d at least passes through the outer wall surface 12a. The second air inlet hole 12d may only pass through the outer wall surface 12a, or the second air inlet hole 12d may pass through both the outer wall surface 12a and the inner wall surface 12a.

[0091] For some examples, see Figure 2 The structure between the inner wall surface 12b and the outer wall surface 12a is a solid structure, and the second air inlet hole 12d passes through the inner wall surface 12b and the outer wall surface 12a.

[0092] It should be noted that the solid structure can be a solid acetate fiber structure, that is, the structure between the inner wall surface 12b and the outer wall surface 12a of the cooling section 12 is a structure filled with acetate fiber bundles. At this time, the cooling section 12 is a hollow acetate fiber structure, and there are gaps between the acetate fiber bundles to form an air flow channel. The air in the external environment can enter the central channel 12c through the second air inlet hole 12d, move toward the medium section 11 to entrain the aerosol and flow to the filter section 13. The air in the external environment can also pass through the second air inlet hole 12d to entrain the aerosol in the air flow channel and flow directly from the central channel 12c to the filter section 13.

[0093] The solid structure can also be a tubular structure such as a paper tube or an aluminum foil tube without an air flow channel formed inside, that is, the cooling section 12 is a hollow paper tube structure or a hollow aluminum foil paper tube structure, and the air in the external environment enters the central channel 12c through the second air inlet 12d, moves toward the medium section 11 and carries the aerosol to the filter section 13. The hollow paper tube structure and the hollow aluminum foil paper tube structure are light in weight, which is convenient for reducing the overall weight of the aerosol generating product 1, and the hollow area thereof can be used to reduce the temperature of the aerosol; and the hollow paper tube structure and the hollow aluminum foil tube structure have good heat resistance, are not easily deformed by heat, and can still maintain their shape after heat conduction, which can increase the structural stability of the aerosol generating product 1. For example, please refer to Figure 2 The cooling section 12 is a hollow paper tube structure.

[0094] Of course, the cooling section 12 may also be a hollow silica gel structure, a hollow PET (polyethylene glycol terephthalate) structure, etc., which is not limited here.

[0095] In this embodiment, the second air inlet hole 12d passes through both the outer wall surface 12a and the inner wall surface 12b. The air in the external environment enters through the first air inlet hole 101a and the second air inlet hole 12d and carries the aerosol with it to flow from the central channel 12c to the filter section 13. The second air inlet hole 12d and the central channel 12c jointly define at least a portion of the air guide channel.

[0096] It can be understood that acetate fiber refers to acetate fiber, also known as cellulose acetate or cellulose acetate, which is a chemically modified polymer compound obtained by esterifying the hydroxyl groups in the cellulose molecules with acetate, including diacetate fiber and triacetate fiber, which has good acid and alkali resistance and organic solvent resistance.

[0097] In some embodiments, a groove 12e is provided between the inner wall surface 12b and the outer wall surface 12a, passing through at least one end of the cooling section 12 along the length direction, and the second air inlet 12d is communicated with the groove 12e.

[0098] It is understandable that in this embodiment, the cooling section 12 can be a hollow corrugated tube structure, a porous structure, etc. For example, see Figure 3 and Figure 4 The cooling section 12 is a hollow corrugated tube structure, and the cross section of the area between the inner wall and the outer wall of the hollow corrugated tube is roughly wavy.

[0099] The communication method between the second air inlet 12d and the groove 12e is not limited.

[0100] For example, in some embodiments, see Figure 3 The second air inlet hole 12d passes through the groove 12e and the inner wall surface 12b.

[0101] In this embodiment, the second air inlet 12d passes through both the outer wall 12a and the inner wall 12b. At this time, the air in the external environment can directly enter the central channel 12c through the first air inlet 101a and the second air inlet 12d to extract aerosols, or enter the groove 12e through the first air inlet 101a and the second air inlet 12d to extract aerosols and flow from the central channel 12c to the filter section 13. That is to say, in this embodiment, the air in the external environment can have two air flow channels, so that more aerosols can be extracted per unit time, which is convenient for improving the extraction efficiency of aerosols.

[0102] For some examples, see Figure 5 , the second air inlet 12d only passes through the outer wall 12a, the air in the external environment enters the groove 12e through the first air inlet 101a and the second air inlet 12d, and then flows from the central channel 12c to the filter section 13 with the atomized aerosol, and the second air inlet 12d, the groove 12e, and the central channel 12c jointly define at least a part of the air guide channel. In this embodiment, the air in the external environment extracts the aerosol only through one air flow channel, which is convenient for the extraction consistency of the aerosol, and also convenient for cooling the aerosol.

[0103] It should be noted that the number of the second air inlet holes 12d is not limited, and can be one, or two or more.

[0104] For some examples, see Figure 6 and Figure 7 A groove 12f is provided on the circumferential surface of the cooling section 12, and the groove 12f passes through at least one end of the cooling section 12. The first air inlet hole 101a is provided in the first wrapping section 101 to cover the portion of the groove 12f, and the groove 12f defines at least a portion of the air guide channel.

[0105] That is to say, in this embodiment, after the air in the external environment enters the groove 12f through the first air inlet 101a, it can carry the aerosol to the filter section 13, and there is no need to perform a punching operation in the cooling section 12. The aerosol extraction can be achieved only by relying on the cooperation of the cooling section 12's own structure and the first air inlet 101a. The structure of the aerosol generating product 1 is simpler and the processing difficulty is small.

[0106] In this embodiment, the temperature reduction section 12 can be a silicone member or the like.

[0107] In some embodiments, an aroma substance is provided in the cooling section 12. In this way, the flavor of the aerosol can be enriched and the user experience can be enhanced.

[0108] It is understandable that the setting position of the aroma substance in the cooling section 12 is not limited. For example, in some examples, the aroma substance is set in the central channel 12c, in other examples, the aroma substance is set in the groove 12e, and in still other examples, the aroma substance is set in the groove 12f.

[0109] In some embodiments, the medium section 11 and the cooling section 12 are spaced apart to form a first cavity 101b, and / or the cooling section 12 and the filtering section 13 are spaced apart to form a second cavity 101c.

[0110] It should be noted that the medium section 11 and the cooling section 12 are spaced apart to form the first cavity 101b, and / or the cooling section 12 and the filtering section 13 are spaced apart to form the second cavity 101c, including various situations.

[0111] First, see Figures 6 to 8 The medium section 11 and the temperature reduction section 12 are spaced apart to form a first cavity 101b, that is, only the first cavity 101b is provided in the first wrapping section 101. The first cavity 101b has a large space, which can increase the contact area with the aerosol to reduce the temperature of the aerosol and is also convenient for storing the aerosol.

[0112] For the second one, see Figure 8 The cooling section 12 and the filtering section 13 are spaced apart to form a second cavity 101c, that is, only the second cavity 101c is provided in the first wrapping section 101. The second cavity 101c has a large space, which can increase the contact area with the aerosol to reduce the temperature of the aerosol and is also convenient for storing the aerosol.

[0113] The third type is that the medium section 11 and the cooling section 12 are spaced apart to form a first cavity 101b, and the cooling section 12 and the filtering section 13 are spaced apart to form a second cavity 101c, that is, the first wrapping section 101 has both the first cavity 101b and the second cavity 101c. In this way, the circulation area of ​​the aerosol can be further increased, and the cooling effect can be improved. In addition, the probability of aerosol deposition on the contact surface between the cooling section 12 and the medium section 11 and the contact surface between the cooling section 12 and the filtering section 11 can be reduced, and the aerosol extraction rate can be improved.

[0114] The first air inlet 101a may be disposed at any position.

[0115] For some examples, see Figure 7 The first air inlet 101a passes through the side wall of the first wrapping section 101 corresponding to the first cavity 101b, that is, after the air in the external environment enters the first cavity 101b through the first air inlet 101a, it carries the aerosol into the filtering section 13 through the cooling section 12. In this way, the air in the external environment can also promote the cooling effect of the first cavity 101b, and can also reduce the probability of aerosol deposition on the contact surface between the medium section 11 and the cooling section 12. The aerosol extraction rate is high, and the aerosol is first cooled in the first cavity 101b and then cooled in the cooling section 12, which can make the use temperature of the aerosol more suitable.

[0116] In some other embodiments, please refer to Figure 8 , the first air inlet 101a passes through the side wall of the first wrapping section 101 corresponding to the second cavity 101c. That is to say, after the air in the external environment enters the second cavity 101c through the first air inlet 101a, it carries the aerosol into the filter section 13. In this way, the air in the external environment can also promote the cooling effect of the second cavity 101c, and can also reduce the probability of aerosol deposition on the contact surface between the cooling section 12 and the filter section 13. The aerosol extraction rate is high, and the aerosol is first cooled by the cooling section 12 and then carried by the air in the external environment, which can reduce the heat borne by the second cavity 101c and increase the structural stability of the second cavity 101c.

[0117] It is understood that in some embodiments, see Figures 2 to 5 The two ends of the cooling section 12 along the length direction are in contact with the medium section 11 and the filter section 13 respectively, that is, there is no cavity between the cooling section 12 and the medium section 11, and there is no cavity between the cooling section 12 and the filter section 13. The two ends of the cooling section 12 along the length direction can be respectively abutted against the medium section 11 and the filter section 13. In this way, it is convenient to increase the structural stability of the cooling section 12, reduce the difficulty of docking the cooling section 12, the medium section 11 and the filter section 13, and facilitate assembly.

[0118] The number of the first air inlet holes 101 a is not limited, and may be one, or two or more.

[0119] In some embodiments, the number of the first air inlet holes 101a is 4-30, for example, 4, 5, 7, 8, 10, 13, 17, 20, 25, 28, 30, etc.

[0120] It should be noted that if there are too many first air inlet holes, the air intake will be too much, the suction resistance will be small, and the aerosol content obtained by suction will be small. If there are too few first air inlet holes, the air intake will be too little, the suction resistance will be large, and the aerosol content obtained by suction will be small, affecting the user experience.

[0121] In this embodiment, the number of the first air inlet holes 101a is appropriate, and the number of the first air inlet holes 101a is neither too many nor too few, and the suction resistance is appropriate, so that the aerosol content inhaled by the user is appropriate, thereby enhancing the user experience.

[0122] In some embodiments, the filter section 13 is a solid acetate fiber structure, or a polyester resin structure, or a porous structure. On the one hand, it can filter impurities or harmful substances contained in the aerosol, adsorb condensate or large particle droplets formed by aerosol condensation, keep the aerosol dry, and improve the user experience. On the other hand, it can also adjust the suction resistance to make the aerosol content generated per unit time more reasonable.

[0123] It should be noted that the porous structure refers to that the filter segment 13 has a plurality of perforations passing through at least one end of the filter segment 13 along the length direction. The porous structure may be an extrusion-molded, injection-molded or die-casting-molded structure.

[0124] For example, see Figures 1 to 9 The filter section 13 is a solid acetate fiber structure, and the solid acetate fiber structure is a structure filled with acetate fiber tows.

[0125] The material of the filter section 13 is not limited. For example, the material of the filter section 13 includes but is not limited to PE (polyethylene), PLA (Polylactic acid, also known as polylactide), PBAT (Poly (butyleneadipate-co-terephthalate), PP (Polypropylene), acetate fiber, acrylic fiber material or one or more combinations thereof.

[0126] The material of the cooling section 12 is not limited. For example, the material of the cooling section 12 includes but is not limited to PE (polyethylene), PLA (Polylactic acid, also known as polylactide), PBAT (Poly (butyleneadipate-co-terephthalate), PP (Polypropylene), acetate fiber, and one or more combinations of acrylic fiber materials.

[0127] It is understandable that the materials of the cooling section 12 and the filtering section 13 may be the same or different.

[0128] The molding method of the cooling section 12 and the filtering section 13 is not limited. The cooling section 12 and the filtering section 13 can be integrally molded by extrusion molding, injection molding, die casting, etc.

[0129] In some embodiments, the cross sections of the medium section 11, the cooling section 12, and the filter section 13 are the same, and the cross-sectional dimensions are the same, which is beneficial for the installation and coordination between the medium section 11, the cooling section 12, and the filter section 13, and can also reduce the size requirements of the housing 10, thereby increasing the installation reliability of the aerosol generating article 1.

[0130] In some embodiments, the medium segment 11, the cooling segment 12 and the filtration segment 13 are cylinders with the same outer diameter and are coaxially arranged, and the length direction of the medium segment 11, the cooling segment 12 and the filtration segment 13 is the axial direction of the medium segment 11, the cooling segment 12 and the filtration segment 13.

[0131] The medium section 11 , the cooling section 12 and the filtering section 13 are butt-jointed along the axial direction, and the sections are easy to match. This can reduce the difficulty of wrapping the wrapping layer 10 outside each section, thereby reducing the difficulty of manufacturing the aerosol generating product 1 .

[0132] The cross-sectional shape of the aerosol generating article 1 is not limited. For some examples, see Figures 1 to 8 , the cross-sectional shape of the aerosol generating product 1 is roughly circular, that is, the aerosol generating product 1 as a whole is roughly a columnar structure; in other examples, the cross-sectional shape of the aerosol generating product 1 is roughly rectangular, that is, the aerosol generating product 1 as a whole is roughly a rectangular column.

[0133] The following is a brief description of the airflow mode in conjunction with the six embodiments shown in the accompanying drawings.

[0134] First embodiment

[0135] Please participate Figure 1 and Figure 2The first air inlet 101a penetrates the first wrapping section 101 along the thickness direction, the cooling section 12 is provided with a second air inlet 12d, the inner wall surface 12b surrounds a hollow central channel 12c, and the structure between the inner wall surface 12b and the outer wall surface 12a is a paper tube structure, that is, the structure between the inner wall surface 12b and the outer wall surface 12a cannot allow airflow to pass through, the second air inlet 12d penetrates the inner wall surface 12b and the outer wall surface 12a of the cooling section 12a, and the air in the external environment can enter the central channel 12c through the second air inlet 12d and then enter the interior of the medium section 11 for diffusion.

[0136] The inside of the medium segment 11 has micropores, and the micropores are at least partially connected to each other and connected to the airway hole 11a. The aerosol generated by the part of the medium segment 11 surrounding the airway hole 11a (i.e., the part of the medium segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, and the aerosol generated by other parts of the medium segment 11 (i.e., the part of the medium segment 11 not exposed to the airway hole 11a) can be collected into the airway hole 11a through the micropores. In this way, during the suction process, the air entering from the second air inlet 12d through the central channel 12c can carry the aerosol collected in the airway hole 11a from the central channel 12c to the filter segment 13, and enter the user's mouth through the filter segment 13.

[0137] Second embodiment

[0138] See also Figure 3 and Figure 4 The first air inlet 101a penetrates the first wrapping section 101 along the thickness direction, the cooling section 12 is provided with a second air inlet 12d, the inner wall surface 12b surrounds a hollow central channel 12c, and a groove 12e is provided between the inner wall surface 12b and the outer wall surface 12a. The second air inlet 12d penetrates the inner wall surface 12b and the outer wall surface 12a of the cooling section 12a. At this time, the air in the external environment has two paths to enter the medium section 11.

[0139] First, air in the external environment can enter the groove 12e through the second air inlet 12d, and then enter the interior of the medium segment 11 through the groove 12e to be diffused;

[0140] Article 2: The air in the external environment can enter the central channel 12c through the second air inlet 12d, and enter the interior of the medium segment 11 through the central channel 12c to be diffused.

[0141] The inside of the medium segment 11 has micropores, and the micropores are at least partially connected to each other and connected to the airway hole 11a. The aerosol generated by the part of the medium segment 11 surrounding the airway hole 11a (i.e., the part of the medium segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, and the aerosol generated by other parts of the medium segment 11 (i.e., the part of the medium segment 11 not exposed to the airway hole 11a) can be collected into the airway hole 11a through the micropores. In this way, during the suction process, the air entering the medium segment 11 from the above two paths can carry the aerosol collected in the airway hole 11a from the central channel 12c to the filter segment 13, and enter the user's mouth through the filter segment 13.

[0142] Third embodiment

[0143] See also Figure 5 The first air inlet hole 101a penetrates the first wrapping section 101 along the thickness direction, the cooling section 12 is provided with a second air inlet hole 12d, the inner wall surface 12b surrounds a hollow central channel 12c, and a groove 12e is provided between the inner wall surface 12b and the outer wall surface 12a. The second air inlet hole 12d only penetrates the outer wall surface 12a of the cooling section 12a. At this time, the air in the external environment enters the groove 12e through the second air inlet hole 12d, and can only enter the interior of the medium section 11 from the groove 12e for diffusion.

[0144] The inside of the medium segment 11 has micropores, and the micropores are at least partially connected to each other and connected to the airway hole 11a. The aerosol generated by the part of the medium segment 11 surrounding the airway hole 11a (i.e., the part of the medium segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, and the aerosol generated by other parts of the medium segment 11 (i.e., the part of the medium segment 11 not exposed to the airway hole 11a) can be collected into the airway hole 11a through the micropores. In this way, during the suction process, the air entering the medium segment 11 from the second air inlet 12d through the channel 12e can carry the aerosol collected in the airway hole 11a from the central channel 12c to the filter segment 13, and enter the user's mouth through the filter segment 13.

[0145] Fourth embodiment

[0146] Please participate Figure 6 and Figure 7 The first air inlet hole 101a penetrates the first wrapping section 101 along the thickness direction, the circumferential surface of the cooling section 12 has a groove 12f, and the inner wall surface 12b surrounds a hollow central channel 12c. At this time, the air in the external environment can enter the interior of the medium section 11 through the first air inlet hole 101a and the groove 12f for diffusion.

[0147] The inside of the medium segment 11 has micropores, and the micropores are at least partially connected to each other and connected to the airway hole 11a. The aerosol generated by the part of the medium segment 11 surrounding the airway hole 11a (i.e., the part of the medium segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, and the aerosol generated by other parts of the medium segment 11 (i.e., the part of the medium segment 11 not exposed to the airway hole 11a) can be collected into the airway hole 11a through the micropores. In this way, during the suction process, the air entering the medium segment 11 from the first air inlet 101a through the groove 12f can carry the aerosol collected in the airway hole 11a from the central channel 12c to the filter segment 13, and enter the user's mouth through the filter segment 13.

[0148] Fifth embodiment

[0149] Please participate Figure 8 The inner wall surface 12b of the cooling section 12 encloses a hollow central channel 12c, and the cooling section 12 and the medium section 11 are spaced apart to form a first cavity 101b. The first air inlet 101a passes through the side wall of the first wrapping section 101 corresponding to the first cavity 101b, so that the air in the external environment can directly enter the first cavity 101b through the first air inlet 101a and diffuse into the interior of the medium section 11.

[0150] The inside of the medium segment 11 has micropores, and the micropores are at least partially connected to each other and connected to the airway hole 11a. The aerosol generated by the part of the medium segment 11 surrounding the airway hole 11a (i.e., the part of the medium segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, and the aerosol generated by other parts of the medium segment 11 (i.e., the part of the medium segment 11 not exposed to the airway hole 11a) can be collected into the airway hole 11a through the micropores. In this way, during the suction process, the air entering the medium segment 11 from the first air inlet hole 101a through the first cavity 101b can carry the aerosol collected in the airway hole 11a to flow to the filter segment 13 through the first cavity 101b and the central channel 12c, and enter the user's mouth through the filter segment 13.

[0151] Sixth embodiment

[0152] See also Fig. 9 The inner wall surface 12b of the cooling section 12 encloses a hollow central channel 12c, and the cooling section 12 and the filtering section 13 are spaced apart to form a second cavity 101c. The first air inlet 101a passes through the side wall of the first wrapping section 101 corresponding to the second cavity 101c, so that the air in the external environment can enter the second cavity 101c through the first air inlet 101a and diffuse into the interior of the medium section 11 through the central channel 12c.

[0153] The inside of the medium segment 11 has micropores, and the micropores are at least partially connected to each other and connected to the airway hole 11a. The aerosol generated by the part of the medium segment 11 surrounding the airway hole 11a (i.e., the part of the medium segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, and the aerosol generated by other parts of the medium segment 11 (i.e., the part of the medium segment 11 not exposed to the airway hole 11a) can be collected into the airway hole 11a through the micropores. In this way, during the suction process, the air entering the medium segment 11 from the first air inlet 101a through the second cavity 101c and the central channel 12c can carry the aerosol collected in the airway hole 11a to flow to the filter segment 13 through the central channel 12c and the second cavity 101c, and enter the user's mouth through the filter segment 13.

[0154] In the description of the present application, the description of the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 embodiment of the present application. In the present application, the schematic representation of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction. 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 changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An aerosol generating product, characterized in that include: A filtering section, a cooling section, and a medium section, wherein the medium section is used to generate aerosol, and the medium section is an integrated structure; A wrapping layer, wrapping around the circumferential outer surface of the filtering section, the cooling section and the medium section; The cooling section is arranged between the filtering section and the medium section, and the portion of the wrapping layer between the medium section and the filtering section is the first wrapping section. The cooling section is arranged in the first wrapping section, and the first wrapping section has a first air inlet hole passing through it. The cooling section has an air guide channel, and the air guide channel is connected to the first air inlet hole.

2. The aerosol-generating article according to claim 1, wherein The medium segment has at least one airway hole, and the airway hole passes through at least one end of the medium segment close to the cooling segment along the length direction. The airway hole is used to guide the aerosol generated by the medium segment to the air guide channel.

3. The aerosol-generating article according to claim 1, wherein The cooling section is a hollow tubular structure having an inner wall and an outer wall. The inner wall surrounds a hollow central channel. The side wall of the cooling section is provided with a second air inlet hole, which at least passes through the outer wall. The second air inlet hole is connected to the first air inlet hole.

4. The aerosol-generating article according to claim 3, wherein: The structure between the inner wall surface and the outer wall surface is a solid structure, and the second air inlet hole passes through the inner wall surface and the outer wall surface.

5. The aerosol-generating article according to claim 3, wherein: A groove is provided between the inner wall surface and the outer wall surface and passes through at least one end of the cooling section along the length direction, and the second air inlet is communicated with the groove.

6. An aerosol generating article according to claim 5, characterized in that The second air inlet hole passes through the slot and the inner wall surface.

7. The aerosol-generating article of claim 1, wherein: The circumferential surface of the cooling section is provided with a groove, and the groove passes through at least one end of the cooling section. The first air inlet hole is provided in the first wrapping section for covering the groove, and the groove defines at least a part of the air guide channel.

8. An aerosol-generating article according to claim 7, characterized in that The temperature-lowering section is a silica gel piece.

9. The aerosol-generating article of claim 1, wherein: Aroma substances are arranged in the temperature reduction section.

10. The aerosol-generating article of claim 1, wherein: The medium section and the cooling section are spaced apart to form a first cavity; and / or the cooling section and the filtering section are spaced apart to form a second cavity.

11. An aerosol-generating article according to claim 10, characterized in that The first air inlet hole passes through the side wall of the first wrapping section corresponding to the first cavity; or, The first air inlet hole passes through the side wall of the first wrapping section corresponding to the second cavity.

12. The aerosol-generating article of claim 1, wherein: Two ends of the temperature reduction section along the length direction are in contact with the medium section and the filtering section respectively.

13. The aerosol-generating article of claim 1, wherein: The number of the first air inlet holes is 4-30.

14. The aerosol-generating article of claim 1, wherein: The filter section is a solid acetate fiber structure, or a polyester resin structure, or a porous structure.

15. The aerosol-generating article of claim 1, wherein: The medium segment, the cooling segment and the filtering segment are coaxially arranged cylinders with the same outer diameter, and the length direction of the medium segment, the cooling segment and the filtering segment is the axial direction of the medium segment, the cooling segment and the filtering segment.

16. An aerosol generating system, characterized in that: include: Aerosol generating devices; and an aerosol-generating article according to any one of claims 1 to 15; Wherein, the aerosol generating device comprises a heating element, and the heating element is used to heat the medium segment to generate aerosol.

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