Aerosol-generating product and aerosol-generating system

Abstract

An aerosol-generating product and an aerosol-generating system. The aerosol-generating product comprising a wrapping layer, a filter section, a cooling section and a medium section, wherein the medium section is used for generating aerosol, and is of an integrated structure; the cooling section is provided between the filter section and the medium section; the part of the wrapping layer located between the medium section and the filter section is a first wrapping section; the cooling section is provided within the first wrapping section; the first wrapping section is provided with first gas inlet holes running through the first wrapping section along the thickness direction; the cooling section is provided with a gas guide channel; and the gas guide channel is communicated with the first gas inlet holes. In this way, air from an external environment enters through the first gas inlet holes of the aerosol-generating product, instead of directly entering through the medium section, improving the temperature consistency during atomization of the medium section; and the cooling section guides gas flow to the filter section, and can also cool the aerosol, so that the use temperature of the aerosol is more suitable, and the structure of the aerosol-generating product is more reasonable and reliable.

Description

Aerosol generating product and aerosol generating system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202310930321.0 and application date of July 26, 2023, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

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

[0004] In recent years, with the advancement of the global tobacco control movement, new tobacco products represented by heated tobacco products have become increasingly popular among users.

[0005] Heat-not-burn (HTB) tobacco products, also known as aerosol-generating products, contain a media segment made of an aerosol-generating substrate. Aerosol-generating products are typically used in conjunction with an aerosol-generating device. The heating element in the aerosol-generating device heats the media segment to a temperature sufficient to atomize and generate an aerosol without combustion. The aerosol is then discharged from the aerosol-generating device for inhalation by the user.

[0006] In related technologies, during the inhalation process, air from the external environment enters directly through the medium segment, causing large temperature changes in 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.

[0007] Summary of the Invention

[0008] 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, the atomization consistency is high, and the user experience is better.

[0009] The present invention provides an aerosol-generating product, comprising:

[0010] A filtering section, a cooling section, and a medium section, wherein the medium section is used to generate aerosol and is an integrated structure;

[0011] a wrapping layer, wrapping around the circumferential outer surfaces of the filtering section, the cooling section, and the medium section;

[0012] The cooling section is arranged between the filter section and the medium section, and the portion of the wrapping layer located between the medium section and the filter 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] In some embodiments, the second air inlet hole passes through the channel and through the inner wall.

[0018] 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 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.

[0019] In some embodiments, the cooling section is a silicone member.

[0020] In some embodiments, an aroma substance is provided in the cooling section.

[0021] In some embodiments, the media segment and the cooling segment are spaced apart to form a first cavity; and / or, the cooling segment and the filtration segment are spaced apart to form a second cavity.

[0022] In some embodiments, the first air inlet hole passes through the side wall of the first wrapping section corresponding to the first cavity; or

[0023] The first air inlet hole passes through the side wall of the first wrapping section corresponding to the second cavity.

[0024] In some embodiments, both ends of the cooling section along the length direction are in contact with the medium section and the filtration section respectively.

[0025] In some embodiments, the number of the first air inlet holes is 4-30.

[0026] In some embodiments, the filter segment is a solid acetate fiber structure, or a polyester resin structure, or a porous structure.

[0027] 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.

[0028] The present invention provides an aerosol generating device, comprising:

[0029] Heating element;

[0030] and the aerosol-generating article according to any embodiment of the present application;

[0031] Wherein, the heating element is used to heat the medium segment to generate aerosol.

[0032] 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, making the use temperature of the aerosol 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

[0033] FIG1 is a schematic structural diagram of an aerosol generating article according to a first embodiment of the present application;

[0034] FIG2 is a schematic cross-sectional view of the aerosol-generating article shown in FIG1 , wherein the dashed arrows in the figure indicate the direction of airflow;

[0035] FIG3 is a schematic cross-sectional view of an aerosol-generating article according to a second embodiment of the present application, wherein the dashed arrows in the figure indicate the direction of airflow;

[0036] FIG4 is a schematic structural diagram of the cooling section shown in FIG3 ;

[0037] FIG5 is a schematic cross-sectional view of an aerosol-generating article according to a third embodiment of the present application, wherein the dashed arrows in the figure indicate the direction of airflow;

[0038] FIG6 is a schematic diagram of a portion of the structure of an aerosol-generating article according to a fourth embodiment of the present application, wherein the filter section is omitted;

[0039] FIG7 is a schematic cross-sectional view of an aerosol-generating article according to a fourth embodiment of the present application, wherein the dashed arrows in the figure indicate the direction of airflow;

[0040] FIG8 is a schematic cross-sectional view of an aerosol-generating article according to a fifth embodiment of the present application, wherein the dashed arrows in the figure indicate the direction of airflow;

[0041] FIG9 is a schematic cross-sectional view of an aerosol-generating article according to a sixth embodiment of the present application, wherein the dashed arrows in the figure indicate the direction of airflow. DETAILED DESCRIPTION

[0042] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed description in the specific implementation methods should be understood as an explanation of this application and should not be regarded as an improper restriction on this application.

[0043] In the description of the embodiments of the present application, the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0044] An embodiment of the present application provides an aerosol generating product 1 , as shown in FIG. 1 to FIG. 9 , which includes a wrapping layer 10 , a filter section 13 , a cooling section 12 and a medium section 11 .

[0045] An embodiment of the present application provides an aerosol generating system, comprising an aerosol generating device and an aerosol generating article 1 of any embodiment of the present application. The aerosol generating article 1 can be plugged in and out of the aerosol generating device. The aerosol generating device includes a heating element, which is used to heat the medium segment 11 to generate an aerosol. The aerosol can be discharged from the aerosol generating device for inhalation by a user.

[0046] The medium segment 11 is used to generate aerosol, that is, at least a portion 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.

[0047] The specific form of the heating element is not limited, and 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.

[0048] The wrapping layer 10 wraps around the circumferential outer surfaces of the filtering section 13 , the cooling section 12 and the medium section 11 .

[0049] Specifically, during the manufacturing process, the wrapping layer 10 can be directly wrapped on the circumferential outer surface of the filter section 13, the cooling section 12 and the medium section 11 through a rolling process to integrate the filter section 13, the cooling section 12 and the medium section 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.

[0050] It is understood that the wrapping layer 10 has a certain structural strength to reduce the probability of deformation caused by airflow pressure during use of the aerosol generating article 1. The wrapping layer 10 can be an integrated structure or a combined structure.

[0051] 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 (butylene adipate-co-terephthalate, polybutylene terephthalate)), etc.

[0052] 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.

[0053] The medium segment 11 is an integral structure, that is, the medium segment 11 is integrally formed, for example, integrally extruded, integrally injected, or integrally die-cast.

[0054] It is understood that a certain force exists between the media segment 11 and the wrapping layer 10 to inhibit the movement of the media segment 11. For example, the outer circumferential surface of the media segment 11 is in contact with the inner wall of the wrapping layer 10. The friction between the outer circumferential surface of the media segment 11 and the inner wall of the wrapping layer 10 stabilizes the position of the media segment 11, thereby inhibiting movement of the media segment 11 due to shaking of the aerosol-generating article 11 during transportation and use.

[0055] It is understandable that the outer circumferential surface of the medium segment 11 and the inner wall of the wrapping layer 10 are in an interference fit or a transition fit, so that compression occurs between the two to increase friction.

[0056] The cooling section 12 is arranged between the filter section 13 and the medium section 11. The portion of the wrapping layer 10 located between the medium section 11 and the filter 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 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 101a.

[0057] 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 the airflow. The airflow can be the air in the external environment, or it can be the airflow formed by the mixture of the air in the external environment and the 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 into 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 the mixture of the air in the external environment and the aerosol to the filter section 13.

[0058] That is, during inhalation, the medium segment 11 is heated and atomized, and air from 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 located in the first wrapping segment 101, which means that air from the external environment does not directly enter the medium segment 11. This improves the temperature consistency of the medium segment 11 during atomization. The cooling section 12 not only guides the airflow to the filter segment 13 for the user, but also reduces the temperature of the aerosol, so that the aerosol flowing out of the filter segment 13 is at an appropriate temperature and can be better used by the user.

[0059] It should be noted that, in the embodiment of the present application, the thickness direction of the first wrapping section 101 is perpendicular to the length direction. Taking the cylindrical aerosol generating product 1 as an example, the thickness direction refers to the radial direction of the aerosol generating product 1.

[0060] It should be noted that in the embodiment of the present application, the end of the medium segment 11 away from the cooling segment 12 is in a closed state, so that when inhaled, sufficient negative pressure can be generated to extract aerosol for the user. The closed state includes a completely airtight state (i.e., an oxygen-free state) and a small amount of air permeability (i.e., a hypoxic state).

[0061] The end of the medium segment 11 away from the cooling section 12 is in a closed state. The end of the medium segment 11 away from the cooling section 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 section 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 section 12. In this way, during inhalation, the medium segment 11 can be in a negative pressure state to facilitate aerosol extraction. In addition, the closed state of the end of the medium segment 11 away from the cooling section 12 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, making the cleaning of the aerosol generating product 1 simpler and more convenient.

[0062] It can be 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 integrally molded 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.

[0063] 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 carries 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. This improves the temperature consistency of the medium section 11 during atomization, and reduces the probability of different aerosol components being generated due to large changes in the atomization temperature of the medium section 11 caused by the air from the external environment entering directly 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, making the use temperature of the aerosol more suitable. The filter section 13 filters impurities entrained in the aerosol, thereby improving the user experience. The structural arrangement of the aerosol generating product 1 is reasonable and reliable.

[0064] The specific components of the aerosol-generating matrix are not limited here. For example, the aerosol-generating matrix may include plant components, auxiliary components, smoke-generating components, adhesive components, etc.

[0065] In some embodiments, the plant component is one or more combinations of powders formed from crushed tobacco leaves, tobacco leaf fragments, tobacco stems, tobacco dust, and flavorful 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 bloodstream through aerosolization, promoting dopamine production in the pituitary gland, thereby achieving a sense of physiological satisfaction.

[0066] In some embodiments, the auxiliary ingredient may be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. Inorganic fillers can provide skeletal support for the plant component and, because they have micropores, can increase the porosity of the wall material after the plant component is formed, thereby improving the aerosol release rate.

[0067] Lubricants include one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase particle flowability, reduce friction between particles, and achieve a more uniform particle density. They can also reduce mold pressure and minimize mold wear.

[0068] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers (also known as surfactants) reduce the interfacial tension between water-soluble and water-insoluble components in a mixed system and form a strong film on the surface of the droplets. Alternatively, due to the charge imparted by the emulsifier, an electrical double layer is formed on the droplet surface, preventing the droplets from agglomerating and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

[0069] The function of the smoke-generating agent component is to generate a large amount of vapor when heated, thereby increasing the amount of smoke produced by the smoking article. In one embodiment, the smoke-generating agent may include, for example, a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butylene glycol, and glycerol); an ester of a polyhydric alcohol (such as 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 dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, triactin, meso-erythritol, a mixture of diacetyl glycerides, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, and lauryl acetate).

[0070] In some embodiments, the adhesive component is a natural plant-derived, non-ionically modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive wetting and intimately contacting the product's component materials creates intermolecular attraction, thereby bonding the powders and liquids of the component materials. The use of a natural plant-derived, non-ionic adhesive can prevent the release of harmful substances such as methanol, formaldehyde, and acrolein caused by colloid modification, thereby improving the safety of the product.

[0071] In some embodiments, referring to 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.

[0072] 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.

[0073] It should be noted that there are multiple 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.

[0074] 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. When inhaling, 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.

[0075] 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 the end of the medium segment 11 away from the cooling segment 12 by assembly and docking with the structure on the aerosol generating device.

[0076] The number of the airway holes 11a is not limited and can be one or two or more.

[0077] 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 media segment 11 is longest. The arrangement direction of the filtration segment 13 and the cooling segment 12 is consistent with the length direction; the direction in which the aerosol-generating article 1 is inserted into the aerosol-generating device and the direction in which the aerosol-generating article 1 is removed from the aerosol-generating device are both parallel to the length direction. The length of the media segment 11 may be longer, shorter, or the same as its dimensions in other directions.

[0078] For example, in some examples, when the dielectric segment 11 is cylindrical, the length direction is the axial direction of the dielectric segment 11. It should be noted that even when the axial dimension of the dielectric segment 11 is smaller than its diameter, the length direction of the dielectric segment 11 is still the axial direction.

[0079] 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, or height of the rectangular parallelepiped.

[0080] It is understood that the medium segment 11 is formed with micropores, which are interconnected to form micro-airways. Some of the micropores are connected to the airway holes 11a, while other micro-airways directly pass through the air inlet and outlet ends of the medium segment 11. This allows aerosol to 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 entrained and discharged by the air in the external environment; alternatively, the air in the external environment directly enters the micro-airway and discharges the aerosol entrained in the micro-airway; or alternatively, the aerosol enters the airway holes 11a from the micro-airway.

[0081] It is understood that the micropores may be interconnected, with some micropores interconnected and others disconnected, or all micropores interconnected. For example, in an embodiment in which the medium segment 11 is a particle assembly, the gaps between the particles constitute the micropores, wherein the size of the micropores is determined by the gaps between the particles in the medium segment 11.

[0082] It should be noted that the airway holes 11 a 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.

[0083] The airway holes 11a and micropores increase the surface area of ​​the media segment 11, facilitating heat transfer and improving heating efficiency. The aerosol-generating matrix within the media segment 11 releases aerosol upon heating. This aerosol is then transported to the filter segment 13 under the negative pressure generated by the user's inhalation. The airway holes 11a and micropores reduce the user's inhalation resistance, enhancing the user experience and reducing the adverse effects of condensed aerosol remaining in the media segment 11, which could affect airflow.

[0084] The specific structure of the air guide channel is not limited.

[0085] In some embodiments, please refer to 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 passes through at least the outer wall surface 12a, and the second air inlet hole 12d is connected to the first air inlet hole 101a.

[0086] That is to say, the air in the external environment can directly enter the cooling section 12 through the second air inlet 12d after passing through the first air inlet 101a, and enter the filtering section 13 through the central channel 12c with the aerosol generated after atomization. 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, and making the use temperature of the aerosol more suitable.

[0087] The second air inlet hole 12d at least passes through the outer wall surface 12a. The second air inlet hole 12d may pass through only the outer wall surface 12a, or may pass through both the outer wall surface 12a and the inner wall surface 12a.

[0088] In some embodiments, referring to FIG. 2 , the structure between the inner wall surface 12 b and the outer wall surface 12 a is a solid structure, and the second air inlet 12 d passes through the inner wall surface 12 b and the outer wall surface 12 a .

[0089] 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 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 12d and be entrained in the aerosol in the air flow channel to flow directly from the central channel 12c to the filter section 13.

[0090] The solid structure can also be a tubular structure without an internal airflow channel, such as a paper tube or aluminum foil tube. Specifically, the cooling section 12 is a hollow paper tube or aluminum foil tube structure. Air from the external environment enters the central channel 12c through the second air inlet 12d, flows toward the dielectric section 11, and entrains the aerosol toward the filtration section 13. Hollow paper tube and aluminum foil tube structures are lightweight, reducing the overall weight of the aerosol-generating article 1 while utilizing their hollow areas to lower the aerosol temperature. Furthermore, these hollow paper tube and aluminum foil tube structures exhibit excellent heat resistance, resist deformation under heat, and maintain their shape after heat conduction, thereby enhancing the structural stability of the aerosol-generating article 1. For example, see Figure 2 , where the cooling section 12 is a hollow paper tube structure.

[0091] 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.

[0092] In this embodiment, the second air inlet 12d passes through both the outer wall 12a and the inner wall 12b. Air from the external environment enters through the first air inlet 101a and the second air inlet 12d and carries aerosol with it to flow from the central channel 12c to the filter section 13. The second air inlet 12d and the central channel 12c jointly define at least a portion of the air guide channel.

[0093] 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 cellulose molecules with acetate, including diacetate fiber and triacetate fiber, which has good acid and alkali resistance and organic solvent resistance.

[0094] 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.

[0095] It can be understood that in this embodiment, the cooling section 12 can be a hollow corrugated tube structure, a porous structure, etc. For example, please refer to Figures 3 and 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.

[0096] The communication method between the second air inlet 12d and the groove 12e is not limited.

[0097] For example, in some embodiments, referring to FIG. 3 , the second air inlet 12 d passes through the groove 12 e and the inner wall surface 12 b .

[0098] 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. In this way, more aerosols can be extracted per unit time, which is convenient for improving the aerosol extraction efficiency.

[0099] In some embodiments, as shown in Figure 5 , second air inlet 12d passes only through outer wall 12a. Air from the external environment enters channel 12e through first and second air inlet 101a, 12d, and then flows from central channel 12c toward filter section 13, carrying atomized aerosol. Second air inlet 12d, channel 12e, and central channel 12c collectively define at least a portion of the air guide channel. In this embodiment, air from the external environment extracts aerosol through only one airflow channel, which improves aerosol extraction consistency and also facilitates aerosol cooling.

[0100] 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.

[0101] In some embodiments, please refer to Figures 6 and 7, the circumferential surface of the cooling section 12 is provided with a groove 12f, the groove 12f passes through at least one end of the cooling section 12, and 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.

[0102] 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. There is no need to perform a punching operation in the cooling section 12. The aerosol can be extracted only by relying on the structure of the cooling section 12 itself and the cooperation with the first air inlet 101a. The structure of the aerosol generating product 1 is simpler and the processing difficulty is small.

[0103] In this embodiment, the cooling section 12 may be made of a silicone rubber member or the like.

[0104] In some embodiments, an aroma substance is provided in the cooling section 12. This can enrich the flavor of the aerosol and enhance the user experience.

[0105] It is understandable that the location 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.

[0106] 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.

[0107] 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.

[0108] In the first embodiment, as shown in Figures 6 to 8 , the dielectric segment 11 and the cooling segment 12 are spaced apart to form a first cavity 101b. In other words, the first encapsulating segment 101 contains only the first cavity 101b. The first cavity 101b has a large space, increasing the contact area with the aerosol to reduce its temperature and facilitate storage.

[0109] In the second method, as shown in Figure 8 , the cooling section 12 and the filtering section 13 are spaced apart to form a second cavity 101c. In other words, the first encapsulating section 101 contains only the second cavity 101c. The second cavity 101c has a larger space, increasing the contact area with the aerosol to reduce its temperature and facilitate aerosol storage.

[0110] The third method involves spacing the medium section 11 and the cooling section 12 to form a first cavity 101b, and spacing the cooling section 12 and the filtration section 13 to form a second cavity 101c. In other words, the first wrapping section 101 contains both the first cavity 101b and the second cavity 101c. This further increases the aerosol's circulation area, enhancing the cooling effect. It also reduces the chance of aerosol depositing on the interface between the cooling section 12 and the medium section 11, and on the interface between the cooling section 12 and the filtration section 11, thereby increasing the aerosol extraction rate.

[0111] The location of the first air inlet 101a is not limited.

[0112] In some embodiments, please refer to 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 filter 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 the aerosol being deposited 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.

[0113] In other embodiments, as shown in FIG8 , the first air inlet 101a passes through the sidewall of the first wrapping section 101 corresponding to the second cavity 101c. That is, after air from the external environment enters the second cavity 101c through the first air inlet 101a, it carries the aerosol into the filtration section 13. This allows the air from the external environment to promote the cooling effect of the second cavity 101c and reduce the probability of aerosol deposition on the contact surface between the cooling section 12 and the filtration section 13. This results in a high aerosol extraction rate. The aerosol is first cooled in the cooling section 12 before being carried by the air from the external environment, which reduces the heat experienced by the second cavity 101c and increases the structural stability of the second cavity 101c.

[0114] It can be understood that, in some embodiments, please refer to 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 abutted against the medium section 11 and the filter section 13 respectively. 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.

[0115] The number of the first air inlet holes 101 a is not limited, and can be one, or two or more.

[0116] 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.

[0117] 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 inhaled 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 inhaled will be small, affecting the user experience.

[0118] In this embodiment, the number of the first air inlet holes 101a is appropriate, neither too many nor too few, and the suction resistance is appropriate, so that the aerosol content inhaled by the user is appropriate, thereby improving the user experience.

[0119] In some embodiments, the filter section 13 is a solid acetate fiber structure, a polyester resin structure, or a porous structure. This can filter impurities or harmful substances contained in the aerosol and absorb condensate or large droplets formed by aerosol condensation, keeping the aerosol dry and improving the user experience. Furthermore, it can adjust the suction resistance to achieve a more reasonable aerosol content per unit time.

[0120] It should be noted that the porous structure refers to the filter segment 13 having 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.

[0121] For example, referring to FIG. 1 to FIG. 9 , the filter section 13 is a solid acetate fiber structure, which is a structure filled with acetate fiber tow.

[0122] The material of the filter segment 13 is not limited. For example, the material of the filter segment 13 includes, but is not limited to, one or more combinations of PE (polyethylene), PLA (Polylactic acid, also known as polylactide), PBAT (Poly (butylene adipate-co-terephthalate), PP (Polypropylene), acetate fiber, and acrylic fiber materials.

[0123] 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 one or more combinations of PE (polyethylene), PLA (Polylactic acid, also known as polylactide), PBAT (Poly (butylene adipate-co-terephthalate), PP (Polypropylene), acetate fiber, and acrylic fiber materials.

[0124] It is understandable that the materials of the cooling section 12 and the filtering section 13 can be the same or different.

[0125] 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.

[0126] In some embodiments, the media segment 11, the cooling segment 12, and the filter segment 13 have the same cross-section and dimensions. This facilitates the assembly and coordination of the media segment 11, the cooling segment 12, and the filter segment 13, reduces the size requirements for the housing 10, and increases the installation reliability of the aerosol-generating article 1.

[0127] 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.

[0128] The medium section 11 , the cooling section 12 and the filtering section 13 are connected axially, which makes the sections easy to match and reduces the difficulty of wrapping the wrapping layer 10 outside the sections, thereby reducing the difficulty of manufacturing the aerosol generating product 1 .

[0129] The cross-sectional shape of the aerosol-generating article 1 is not limited. In some examples, as shown in Figures 1 to 8 , the cross-sectional shape of the aerosol-generating article 1 is generally circular, i.e., the aerosol-generating article 1 as a whole is generally cylindrical. In other examples, the cross-sectional shape of the aerosol-generating article 1 is generally rectangular, i.e., the aerosol-generating article 1 as a whole is generally in the shape of a rectangular column.

[0130] The following briefly describes the airflow mode in conjunction with six embodiments shown in the accompanying drawings.

[0131] First embodiment:

[0132] Please refer to Figures 1 and 2. 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. 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 air 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. 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.

[0133] The interior of the media segment 11 has micropores, which are at least partially interconnected and connected to the airway hole 11a. Aerosol generated by the portion of the media segment 11 surrounding the airway hole 11a (i.e., the portion of the media segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, while aerosol generated by other parts of the media segment 11 (i.e., the portion of the media segment 11 not exposed to the airway hole 11a) can be collected within the airway hole 11a through the micropores. Thus, during inhalation, air entering from the second air inlet 12d through the central channel 12c can entrain the aerosol collected within the airway hole 11a and flow from the central channel 12c to the filter segment 13, where it enters the user's mouth.

[0134] Second embodiment:

[0135] Please refer to Figures 3 and 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 encloses a hollow central channel 12c. 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.

[0136] First, air from the external environment can enter the groove 12e through the second air inlet 12d, and then enter the interior of the dielectric segment 11 through the groove 12e to diffuse;

[0137] Second, 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 segment 11 through the central channel 12c to be diffused.

[0138] The interior of the media segment 11 has micropores, which are at least partially interconnected and connected to the airway pore 11a. Aerosol generated by the portion of the media segment 11 surrounding the airway pore 11a (i.e., the portion of the media segment 11 exposed to the airway pore 11a) directly enters the airway pore 11a. Aerosol generated by other parts of the media segment 11 (i.e., the portion of the media segment 11 not exposed to the airway pore 11a) can be collected within the airway pore 11a through the micropores. Thus, during inhalation, air entering the media segment 11 from the two aforementioned paths can carry the aerosol collected within the airway pore 11a through the central channel 12c toward the filter segment 13, and then enter the user's mouth through the filter segment 13.

[0139] Third embodiment:

[0140] Please refer to Figure 5. 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 encloses a hollow central channel 12c. A groove 12e is provided between the inner wall surface 12b and the outer wall surface 12a. The second air inlet 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 12d and can only enter the interior of the medium section 11 from the groove 12e for diffusion.

[0141] The interior of the media segment 11 has micropores, which are at least partially interconnected and connected to the airway hole 11a. Aerosol generated by the portion of the media segment 11 surrounding the airway hole 11a (i.e., the portion of the media segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, while aerosol generated by other portions of the media segment 11 (i.e., the portion of the media segment 11 not exposed to the airway hole 11a) can be collected within the airway hole 11a through the micropores. Thus, during inhalation, air entering the media segment 11 from the second air inlet 12d via the channel 12e can entrain the aerosol collected within the airway hole 11a and flow from the central channel 12c to the filter segment 13, where it enters the user's mouth.

[0142] Fourth embodiment:

[0143] Please refer to Figures 6 and 7. The first air inlet 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 101a and the groove 12f for diffusion.

[0144] The interior of the media segment 11 has micropores, which are at least partially interconnected and connected to the airway hole 11a. Aerosol generated by the portion of the media segment 11 surrounding the airway hole 11a (i.e., the portion of the media segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, while aerosol generated by other parts of the media segment 11 (i.e., the portion of the media segment 11 not exposed to the airway hole 11a) can be collected into the airway hole 11a through the micropores. Thus, during inhalation, air entering the media segment 11 from the first air inlet 101a through the groove 12f can entrain the aerosol collected in the airway hole 11a and flow from the central channel 12c to the filter segment 13, and then enter the user's mouth through the filter segment 13.

[0145] Fifth embodiment:

[0146] Please refer to Figure 8. The inner wall surface 12b of the cooling section 12 encloses a hollow central channel 12c. 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. In this way, 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.

[0147] The interior of the media segment 11 has micropores, which are at least partially connected to each other and to the airway hole 11a. The aerosol generated by the portion of the media segment 11 surrounding the airway hole 11a (i.e., the portion of the media segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, while the aerosol generated by other parts of the media segment 11 (i.e., the portion of the media 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 inhalation process, air entering the media segment 11 from the first air inlet 101a through the first cavity 101b can entrain the aerosol collected in the airway hole 11a and flow through the first cavity 101b and the central channel 12c to the filter segment 13, and then enter the user's mouth through the filter segment 13.

[0148] Sixth embodiment:

[0149] Please refer to Figure 9. The inner wall surface 12b of the cooling section 12 encloses a hollow central channel 12c. 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. In this way, 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.

[0150] The interior of the media segment 11 has micropores, which are at least partially connected to each other and to the airway hole 11a. The aerosol generated by the portion of the media segment 11 surrounding the airway hole 11a (i.e., the portion of the media segment 11 exposed to the airway hole 11a) directly enters the airway hole 11a, while the aerosol generated by other parts of the media segment 11 (i.e., the portion of the media 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 inhalation process, air entering the media segment 11 from the first air inlet 101a through the second cavity 101c and the central channel 12c can entrain the aerosol collected in the airway hole 11a and flow through the central channel 12c and the second cavity 101c to the filter segment 13, and then enter the user's mouth through the filter segment 13.

[0151] In the description of this application, the description with reference to the 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 embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine different embodiments or examples described in this application and features of different embodiments or examples without contradiction.

[0152] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An aerosol generating article comprising: 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. An 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 of 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. An 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. An 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, wherein 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, wherein The temperature reduction 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, wherein 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. An aerosol-generating article according to claim 1, wherein The number of the first air inlet holes is 4-30.

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

15. An aerosol-generating article according to 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 comprising: 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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