Aerosol generating product and aerosol generating device

Abstract

The embodiment of the invention provides an aerosol generating product and an aerosol generating device.The aerosol generating product comprises an aerosol generating substrate section and at least one functional section, and the aerosol generating substrate section is used for heating to generate aerosol; a functional section is arranged on at least one of the two sides of the aerosol generation matrix section in the length direction; the aerosol generating matrix section and the functional section are of an integrated structure. According to the aerosol generating product disclosed by the embodiment of the invention, the aerosol generating matrix section and the functional section are arranged into an integrated structure, so that a gap between the aerosol generating matrix section and the functional section is reduced or even eliminated, and the probability of failure caused by separation of all parts in the aerosol generating product in the transportation and use processes is reduced; the two parts can be synchronously and integrally formed, so that the manufacturing steps are reduced, the production process is simplified, and the production quality of aerosol generating products in the same generating batch and among different generating batches can be kept.

Description

Technical Field

[0001] The present invention relates to the field of atomization technology, and in particular to an aerosol generating product and an aerosol generating device. Background Art

[0002] The aerosol generating article is provided with an aerosol generating substrate segment. The aerosol generating substrate segment is heated to a temperature sufficient to generate aerosol by atomization without combustion, and the generated aerosol is discharged from the aerosol generating device for inhalation by the user.

[0003] In the related art, the aerosol generating product includes an aerosol generating matrix segment and several functional segments which are independent of each other. The functional segments are used to filter and cool the generated aerosol. There is a gap between the functional segment and the aerosol generating matrix segment, which makes the structure of the aerosol generating product loose, which is not conducive to the conduction of heat and the volatilization of aerosol, and has an adverse effect on the user's experience. Summary of the invention

[0004] In view of this, the embodiments of the present application hope to provide an aerosol generating product and an aerosol generating device capable of reducing the gap between the aerosol generating substrate segment and the functional segment.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0006] An embodiment of the present invention provides an aerosol generating product, comprising:

[0007] An aerosol generating substrate section, used for heating to generate aerosol;

[0008] At least one functional segment, wherein the functional segment is provided on at least one of the two sides of the aerosol generating substrate segment along the length direction;

[0009] The aerosol generating substrate segment and the functional segment are an integrated structure.

[0010] In some embodiments, the total length of the functional segment along the length direction is not less than the dimension of the aerosol generating substrate segment along the length direction.

[0011] In some embodiments, the ratio of the total length of the functional segment along the length direction to the total length of the aerosol generating substrate segment along the length direction ranges from 1 to 3.

[0012] In some embodiments, a first airway hole is provided in the aerosol generating substrate segment, and the first airway hole runs through at least one end of the aerosol generating substrate segment, and the aperture of the first airway hole ranges from 0.05 mm to 6 mm.

[0013] In some embodiments, the functional section is provided with a second airway hole, and the aperture of the second airway hole is smaller than the aperture of the first airway hole.

[0014] In some embodiments, the ratio of the aperture of the first airway hole to the aperture of the second airway hole is not less than 10.

[0015] In some embodiments, the functional segment is a solid structure and is provided with a plurality of micropores.

[0016] In some embodiments, a plurality of the functional segments are provided on one side of the air outlet end of the aerosol generating matrix segment, wherein one of the functional segments is a first functional segment, and another of the functional segments is a second functional segment, wherein the first functional segment is provided with a filter hole, and the second functional segment is provided with a third airway hole passing through at least one end, and the second functional segment is provided with the first functional segment near one end of the aerosol generating matrix segment, wherein the aperture of the filter hole is smaller than the aperture of the third airway hole.

[0017] In some embodiments, the first functional section is a solid structure, and the filter holes are micropores; or, the same filter hole extends in a straight line or a curve along the length direction of the aerosol generating article.

[0018] In some embodiments, the total length of the second functional segment along the length direction is not less than the total length of the first functional segment along the length direction.

[0019] In some embodiments, the functional segments are provided at both ends of the aerosol generating substrate segment along the length direction.

[0020] In some embodiments, a first groove is provided on the surface of the aerosol generating substrate segment, and the first groove runs through both ends of the aerosol generating substrate segment along the length direction; and / or, a second groove is provided on the surface of the functional segment, and the second groove runs through both ends of the functional segment along the length direction.

[0021] In some embodiments, the aerosol generating substrate segment and the functional segment are an integral structure formed by a co-extrusion process; and / or, the shape of the cross section of the aerosol generating product along a direction perpendicular to the length direction is one of circular, elliptical, and oval.

[0022] In some embodiments, the aerosol generating product includes a coating layer, which covers at least a portion of the circumferential surface of at least one of the functional segment and the aerosol generating matrix segment along the length direction, and the material of the coating layer is a hydrophobic material; and / or the thermal conductivity of the material of the coating layer is greater than the thermal conductivity of the material of the aerosol generating matrix segment.

[0023] An embodiment of the present invention further provides an aerosol generating device, comprising a heating element and the aerosol generating product of any one of the aforementioned embodiments, wherein the heating element is used to heat the aerosol generating substrate segment to generate an aerosol.

[0024] The aerosol generating product in the embodiment of the present invention is configured with the aerosol generating matrix segment and the functional segment as an integrated structure. On the one hand, by forming the aerosol generating matrix segment and the functional segment into a unified whole, the gap between the aerosol generating matrix segment and the functional segment is reduced or even eliminated, thereby improving the overall structural strength of the aerosol generating product and reducing the probability of failure caused by separation of the various parts of the aerosol generating product during transportation and use; on the other hand, the two can be simultaneously integrally formed, thereby reducing the manufacturing steps, simplifying the production process, and improving the production efficiency, which is beneficial to maintaining the production quality of the aerosol generating product within the same production batch and between different production batches. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic cross-sectional view of an aerosol generating article according to a first embodiment of the present invention, wherein the dashed arrow indicates the airflow direction;

[0026] Figure 2 is a schematic cross-sectional view of an aerosol generating article according to a second embodiment of the present invention;

[0027] Figure 3 is a schematic cross-sectional view of an aerosol generating article according to a third embodiment of the present invention at a first viewing angle;

[0028] Figure 4 for Figure 3 A schematic diagram of the embodiment at a second viewing angle;

[0029] Figure 5 for Figure 3 A schematic diagram of the embodiment at a third viewing angle;

[0030] Figure 6 is a schematic cross-sectional view of an aerosol generating article according to a fourth embodiment of the present invention;

[0031] Figure 7 is a schematic cross-sectional view of an aerosol generating article according to a fifth embodiment of the present invention;

[0032] Figure 8 is a schematic cross-sectional view of an aerosol generating article according to a sixth embodiment of the present invention;

[0033] Fig. 9 is a schematic cross-sectional view of an aerosol generating article according to a seventh embodiment of the present invention;

[0034] Fig.10 is a schematic cross-sectional view of an aerosol generating article according to an eighth embodiment of the present invention;

[0035] Fig.11 is a schematic cross-sectional view of an aerosol generating article according to a ninth embodiment of the present invention;

[0036] Fig.12 is a schematic diagram of an aerosol-generating article according to a tenth embodiment of the present invention;

[0037] Fig.13 for Fig.12 A schematic cross-sectional view of an embodiment;

[0038] Fig.14 is a schematic diagram of an aerosol-generating article according to an eleventh embodiment of the present invention;

[0039] Fig.15 for Fig.14 A schematic cross-sectional view of an embodiment;

[0040] Fig.16 is a schematic diagram of an aerosol generating article according to a twelfth embodiment of the present invention;

[0041] Fig.17 for Fig.16 A schematic cross-sectional view of an embodiment;

[0042] Fig.18 is a schematic cross-sectional view of an aerosol generating article according to a thirteenth embodiment of the present invention;

[0043] Fig.19 is a schematic cross-sectional view of an aerosol generating article according to a fourteenth embodiment of the present invention;

[0044] Fig. 20 FIG. 1 is a schematic cross-sectional view of an aerosol-generating article according to a fifteenth embodiment of the present invention.

[0045] Description of Reference Numerals

[0046] Aerosol generating matrix segment 10; first airway hole 10a; first groove 10b; functional segment 20; second airway hole 20a; second groove 20b; first functional segment 21; filter hole 21a; second functional segment 22; third airway hole 22a; coating layer 30 DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0048] In the description of this application, the "length direction" orientation or position relationship is based on the attached Figure 1Regarding the orientation or positional relationship shown, it should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] An embodiment of the present invention provides an aerosol generating product for use in an aerosol generating device, which generates an aerosol that can be inhaled by a user by heating the aerosol generating product.

[0050] See also Figures 1 to 3 , Figures 6 to 11 , the aerosol-generating article comprises an aerosol-generating substrate segment 10 and at least one functional segment 20.

[0051] The aerosol generating substrate segment 10 is composed of an aerosol generating substrate, which generates aerosol after being heated to a certain temperature.

[0052] It is understandable that in order to satisfy the user's suction purpose, refer to Figure 1 , air flow can enter the aerosol generating product from the outside.

[0053] At least one of the two sides of the aerosol generating substrate segment 10 along the length direction is provided with a functional segment 20, that is, see Figure 1 and Figure 2 , it may be that the functional segment 20 is provided only on one side of the gas outlet end of the aerosol generating substrate segment 10; Figure 6 and Figure 7 Alternatively, the functional segments 20 may be provided at both ends of the aerosol generating substrate segment 10 along the length direction.

[0054] The functional segment 20 refers to the portion of the aerosol generating product that is not used to generate aerosol. It is understandable that if the functional segment is heated, some gas may also be released, but it is not the aerosol that the user expects to inhale. The function of the functional segment is to achieve functions such as cooling or filtering the aerosol generated when the aerosol generating matrix segment 10 is heated.

[0055] The airflow needs to pass through the functional section 20. Therefore, by adjusting the blocking effect of the functional section 20 on the airflow, the airflow resistance during the suction process can be adjusted to adapt to the required airflow pressure during the user's suction process, thereby improving the user experience.

[0056] In the embodiment of the present invention, the functional segment 20 can adhere to foreign matter entrained in the airflow and / or microparticles peeled off from the aerosol-generating matrix during the heating process, thereby playing a certain filtering role.

[0057] The aerosol generating substrate segment 10 and the functional segment 20 are an integrated structure. That is, the aerosol generating substrate segment 10 and the functional segment 20 are different parts of a unified whole, rather than two independent structures separated from each other, nor are they two independent structures that are prepared separately and then connected together.

[0058] Due to the material loss and deformation caused by the heating of the aerosol generating substrate to generate aerosol, the geometric dimensions of the aerosol generating substrate segment 10 may change. In the related art, the aerosol generating substrate segment 10 and the functional segment 20 are separately arranged, and there may be a problem that the gap between the aerosol generating substrate segment 10 and the functional segment becomes larger due to deformation after heating. In the embodiment of the present invention, the functional segment 20 and the aerosol generating substrate segment 10 are an integrated structure, so that the functional segment 20 can support and fix the aerosol generating substrate segment 10, thereby improving the overall structural strength of the aerosol generating product and reducing the probability of failure caused by separation of various parts in the aerosol generating product during transportation and use.

[0059] The aerosol generating product in the embodiment of the present invention, by setting the aerosol generating matrix segment 10 and the functional segment 20 as an integrated structure, on the one hand, by forming the aerosol generating matrix segment 10 and the functional segment 20 into a unified whole, the gap between the aerosol generating matrix segment 10 and the functional segment 20 is reduced or even eliminated, thereby improving the overall structural strength of the aerosol generating product, and reducing the probability of failure caused by separation of the various parts in the aerosol generating product during transportation and use; on the other hand, the two can be simultaneously integrally formed, thereby reducing the manufacturing steps, simplifying the production process, and improving the production efficiency, which is beneficial to maintaining the production quality of the aerosol generating product within the same production batch and between different production batches.

[0060] It should be noted that, in the embodiments of the present invention, the length direction does not specifically refer to the direction in which the outer contour of the aerosol-generating substrate segment 10 is the longest. The arrangement direction of the functional segment 20 and the aerosol-generating substrate segment 10 is consistent with the length direction; the direction in which the aerosol-generating product is inserted into the aerosol-generating device and the direction in which the aerosol-generating product is taken out of the aerosol-generating device are both parallel to the length direction. The length of the aerosol-generating substrate segment 10 along the length direction may be longer, shorter, or the same as the length in other directions.

[0061] For example, when the aerosol generating substrate segment 10 has a cylindrical appearance, the length direction is the axial direction of the aerosol generating substrate segment 10. It should be noted that even if the axial length of the aerosol generating substrate segment 10 is smaller than its diameter, the length direction of the aerosol generating substrate segment 10 is still the axial direction.

[0062] For example, when the appearance of the aerosol generating matrix segment 10 is a rectangular parallelepiped, the length direction is still the direction defined above, that is, the arrangement direction of the functional segment 20 and the aerosol generating matrix segment 10; or, the direction of taking and placing the aerosol generating product, the length direction of the aerosol generating matrix segment 10 can be any direction of the length, width, and height of the rectangular parallelepiped.

[0063] The specific components of the aerosol generating matrix are not limited herein. For example, in some embodiments, the aerosol generating matrix may include plant components, auxiliary components, smoke generating agent components, adhesive components, etc.

[0064] 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.

[0065] 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.

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

[0067] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers (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.

[0068] The function of the smoke-generating agent component is to generate a large amount of steam when heated, thereby increasing the amount of smoke of the smoking product. In one embodiment, the smoke-generating agent may include, for example: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, triethylene glycol, 1,3-butylene glycol and glycerol); an ester of a polyhydric alcohol (such as monoacetin, diacetin or triacetin); a monocarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid) or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, diacetin mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, glyceryl tributyrate, lauryl acetate) or one or more combinations thereof.

[0069] In 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.

[0070] It will be appreciated that an air flow is required to pass through the aerosol generating substrate segment 10 in order to entrain and carry away the generated aerosol.

[0071] The specific manner of achieving airflow through the aerosol-generating substrate segment 10 is not limited.

[0072] For example, see Figure 1 The air inlet end of the aerosol generating substrate segment 10 is one end thereof along the length direction, and the air outlet end is the other end thereof along the length direction.

[0073] The air inlet end of the aerosol generating substrate segment 10 is the end of the aerosol generating substrate segment 10 upstream of the airflow direction. The air outlet end of the aerosol generating substrate segment 10 is the end of the aerosol generating substrate segment 10 downstream of the airflow direction.

[0074] For example, see Fig.19 The aerosol generating matrix segment 10 is provided with a plurality of air inlets, wherein a part of the air inlets are located at one end thereof along the length direction, and another part of the air inlets are located at a side thereof perpendicular to the length direction; the air outlet is arranged at the other end of the aerosol generating matrix segment 10 along the length direction.

[0075] It can be understood that the aerosol generating substrate segment 10 is provided with a plurality of air inlets, and all of the plurality of air inlets are located on one side thereof perpendicular to the length direction (not shown); the air outlet is arranged at the other end of the aerosol generating substrate segment 10 along the length direction.

[0076] For example, see Fig. 20 The air inlet end and the air outlet end of the aerosol generating substrate segment 10 are the same end along the length direction thereof.

[0077] See also Figure 1 The aerosol generating substrate segment 10 and the functional segment 20 both extend along the length direction of the aerosol generating article. That is, the functional segment 20 is provided on at least one of the two sides of the aerosol generating substrate segment 10 along the length direction.

[0078] It is understandable that by reasonably setting the layout position of the functional segment 20, different functions of the functional segment 20 can be realized and the user experience can be improved.

[0079] For example, in the process of heating the aerosol generating matrix, the airflow passing through the aerosol generating product will also be heated and heated. If the airflow temperature is too high, the user will feel uncomfortable when inhaling. However, by locating the functional segment 20 on the side of the air outlet end of the aerosol generating matrix segment 10, the flow path of the airflow out of the aerosol generating matrix segment 10 can be increased, thereby achieving the purpose of reducing the airflow temperature. At the same time, it can play a certain filtering role on the airflow, filtering foreign matter entrained in the airflow and microparticles peeled off by the aerosol generating matrix during the heating process, thereby improving the taste of the user.

[0080] For another example, the functional segment 20 is located on the air inlet side of the aerosol generating matrix segment 10, so that the airflow enters the functional segment 20 before entering the aerosol generating matrix segment 10, and the foreign matter from the outside world carried in the airflow is filtered by the functional segment 20, thereby reducing the probability of foreign matter entering the aerosol generating matrix segment 10 and causing blockage, and reducing the probability of foreign matter being heated and generating odor, thereby improving the taste of the user.

[0081] Illustratively, the overall shape of the aerosol-generating article is cylindrical.

[0082] In some embodiments, see Figure 1 The cross-sectional dimensions and shapes of the aerosol generating substrate segment 10 and the functional segment 20 are the same, which facilitates the synchronous manufacturing and installation and use of the aerosol generating product.

[0083] See also Figure 1 One end of the air inlet side of the aerosol generating product is one end of the aerosol generating product along the length direction, and one end of the air outlet side is the other end of the aerosol generating product along the length direction.

[0084] In some embodiments, the total length of the functional segment 20 along the length direction is not less than the size of the aerosol generating matrix segment 10 along the length direction, thereby extending the flow path of the airflow in the functional segment 20, thereby increasing the probability that foreign matter from the outside world entrained in the airflow and microparticles peeled off from the aerosol generating matrix during the heating process come into contact with the functional segment 20 and are filtered by the functional segment 20, thereby improving the filtering effect.

[0085] It should be noted that the total length of the functional segment 20 refers to the sum of the dimensions of each functional segment 20 along the length direction. That is, if there is one functional segment 20, the total length of the functional segment 20 is the dimension of the functional segment 20 along the length direction; if there are multiple functional segments 20, the total length of the functional segment 20 is the sum of the dimensions of all functional segments 20 along the length direction.

[0086] In some embodiments, the ratio of the total length of the functional segment 20 along the length direction to the total length of the aerosol-generating substrate segment 10 along the length direction ranges from 1 to 3.

[0087] That is to say, when the total length of the functional segment 20 along the length direction is the shortest, it is the same as the total length of the aerosol generating matrix segment 10 along the length direction; when the total length of the functional segment 20 along the length direction is the longest, its total length is 3 times the total length of the aerosol generating matrix segment 10 along the length direction.

[0088] If the ratio of the two is greater than 3, then when the total length of the aerosol generating article is constant, the length of the medium is shortened, and the amount of aerosol generating substrate that can actually be smoked is reduced, which is not conducive to the user's smoking experience. Therefore, the ratio of the two is in the range of 1 to 3, so that a better balance is achieved between the filtering effect of the functional segment 20 and the aerosol generating efficiency of the aerosol generating substrate segment 10, thereby improving the user experience.

[0089] In some embodiments, see Figures 1 to 3 , Figures 6 to 11 A first air passage hole 10 a is provided in the aerosol generating substrate segment 10 , and the first air passage hole 10 a penetrates at least one end of the aerosol generating substrate segment 10 .

[0090] The aerosol enters the first airway hole 10a, and the airflow converges into the first airway hole 10a, so that a larger flow of airflow can entrain the aerosol, thereby improving the aerosol extraction efficiency; at the same time, the first airflow hole can increase the total cross-sectional area of ​​the airflow channel in the aerosol generating matrix segment 10, which is beneficial to reducing the inhalation resistance.

[0091] The first airway hole 10a is a hole in a macroscopic sense and can be identified by naked eyes.

[0092] Micropores are formed in the aerosol generating matrix segment 10, and the micropores are connected to form micro airways. A part of the micro airways is connected to the first airway hole 10a, and another part of the micro airways directly penetrates the air inlet and air outlet of the aerosol generating matrix segment 10. In this way, the aerosol can be discharged from the aerosol generating matrix segment 10 in a variety of ways. For example, the aerosol generated by the aerosol generating matrix after heating can directly enter the first airway hole 10a and be carried away by the airflow; or, the airflow directly enters the micro airway and discharges the aerosol carried in the micro airway; or, the aerosol enters the first airway hole 10a from the micro airway.

[0093] It is understood that the micropores may be partially connected and partially disconnected, or all the micropores may be interconnected. For example, in an embodiment where the medium segment 10 is a particle combination, the gaps between the particles constitute the micropores. The size of the micropores is determined by the gaps between the particles of the aerosol generating matrix. It is understood that the micropores are microscopic holes that cannot be directly identified by the naked eye.

[0094] The first airway holes 10a and micropores can increase the surface area of ​​the aerosol generating matrix, facilitate heat transfer, and improve heating efficiency. The aerosol generating matrix releases aerosol when heated, and under the action of the negative pressure generated by the user's inhalation, it is transported to the outlet end of the aerosol generating product. The first airway holes 10a 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 aerosol generating matrix segment 10 on the air flow.

[0095] In some embodiments, see Figure 2 , Figure 7 and Figure 8 , the functional section 20 is provided with a second airway hole 20a.

[0096] The second airway hole 20a is a hole in a macroscopic sense, that is, it can be identified by the naked eye.

[0097] By providing the second airway holes 20a, the total cross-sectional area of ​​the airflow channel in the functional section 20 can be increased, so that the suction resistance can be adjusted by adjusting the number and size of the second airway holes 20a, thereby improving the user experience.

[0098] The number of the second airway holes 20a is not limited, and may be one or more.

[0099] The cross-sectional shape of the second airway hole 20a along the vertical length direction is not limited, for example, circular, square, etc.

[0100] It can be understood that the second airway hole 20 a at least passes through one end of the functional section 20 .

[0101] In some embodiments, see Figure 2 , Figure 7 and Figure 8 , the first airway hole 10a and the second airway hole 20a are directly connected. That is, one of the first airway hole 10a and the second airway hole 20a is connected at least toward one end of the other, so that the airflow can directly and continuously pass through the first airway hole 10a and the second airway hole 20a, which is beneficial to reduce the inhalation resistance and increase the flow rate of the airflow in the aerosol generating article.

[0102] See also Figure 2 , Figure 7 and Figure 8 The first airway hole 10a and the second airway hole 20a both extend in the length direction to reduce the resistance encountered by the airflow during the passage of the first airway hole 10a and the second airway hole 20a.

[0103] In some embodiments, see Figure 2 and Figure 7 Both ends of the first airway hole 10a and the second airway hole 20a are connected and communicated with each other to reduce suction resistance and increase the flow rate of the airflow.

[0104] In some embodiments, see Figure 2 The aperture of the second airway hole 20a is smaller than the aperture of the first airway hole 10a, so that the flow rate and temperature of the airflow can be adjusted by changing the aperture between the first airway hole 10a and the second airway hole 20a.

[0105] It should be noted that the aperture of the first airway hole 10a refers to its equivalent diameter. The aperture of the second airway hole 20a refers to the equivalent diameter of the second airway hole 20a.

[0106] The equivalent diameter refers to the diameter of a circle with the same cross-sectional area as the object being measured.

[0107] In some embodiments, the ratio of the aperture of the first airway hole 10a to the aperture of the second airway hole 20a is not less than 10, so as to better adjust the suction resistance of the user and the temperature of the airflow.

[0108] Exemplarily, in an embodiment in which the functional segment 20 on the air outlet side of the aerosol generating matrix segment 10 is provided with a second airway hole 20a, the aperture of the first airway hole 10a is 1 mm, and the aperture of the second airway hole 20a is 0.1 mm. Based on the Venturi effect and the side wall flow effect, the air flow temperature can be reduced from 135°C in the first airway hole 10a to 50°C at the air outlet end of the second airway hole 20a, thereby avoiding the user's feeling of burning mouth.

[0109] The specific value of the ratio of the aperture of the first airway hole 10a to the aperture of the second airway hole 20a can be 10, 12, 15, 20, etc.

[0110] It can be understood that, since the second airway hole 20a is provided in the functional section 20, the functional section 20 has a hollow structure.

[0111] In some embodiments, see Figure 1 , Figure 6 The functional section 20 is a solid structure and is provided with a plurality of micropores.

[0112] Micropores are pores in a microscopic sense.

[0113] The micropores are interconnected to form micro airways, and at least part of the micro airways directly penetrates the air inlet and outlet of the functional section 20 , so that the airflow can pass through the functional section 20 through the micro airways.

[0114] The micro airways formed by the micropores can adjust the suction resistance and increase the surface area within the functional segment 20, thereby improving the filtering effect of the functional segment 20; at the same time, it is beneficial to enhance the cooling effect of the heated airflow and improve the user experience.

[0115] It can be understood that the micropores may be interconnected, which may be that some of the micropores are interconnected and some of the micropores are not interconnected; or all of the micropores may be interconnected.

[0116] The solid structure of the functional segment 20 is beneficial to improving the structural strength of the functional segment 20, so that it can extend the length of the aerosol generating substrate segment 10 as much as possible and shorten the length of the functional segment 20 on the basis of keeping the length of the aerosol generating product unchanged.

[0117] It can be understood that the number of the functional segments 20 can be one or more, so that the functional segments 20 with multiple functions can cooperate with each other.

[0118] It is understandable that the specific structures of the functional segments 20 respectively arranged on the air outlet side and the air inlet side of the aerosol generating substrate segment 10 may be the same or different.

[0119] For example, see Figure 6 The functional segments 20 on the air outlet side and the air inlet side of the aerosol generating matrix segment 10 are both solid structures and provided with micropores; for example, see Figure 7 The functional segments 20 on the air outlet side and the air inlet side of the aerosol generating matrix segment 10 are both hollow structures and are provided with a second airway hole 20a; for example, see Figure 8 The functional segment 20 on the air outlet side of the aerosol generating matrix segment 10 is a hollow structure, and the functional segment 20 on the air inlet side of the aerosol generating matrix segment 10 is a solid structure.

[0120] It can be understood that the function of the functional segment 20 on the air inlet side of the aerosol generating matrix segment 10 is mainly to filter impurities in the external air and adjust the fluid state of the air entering the aerosol generating matrix segment 10, adjust the air intake pressure, stabilize and adjust the suction resistance; the function of the functional segment 20 on the air inlet side of the aerosol generating matrix segment 10 is mainly to filter and cool down.

[0121] A plurality of functional segments 20 may be arranged on the same side of the aerosol-generating substrate segment 10 .

[0122] For example, see Figure 3 , Fig. 9 and Fig.10 A plurality of functional segments 20 are provided on one side of the air outlet end of the aerosol generating matrix segment 10, wherein one of the functional segments 20 is a first functional segment 21, and another functional segment is a second functional segment 22. A filter hole 21a is provided in the first functional segment 21, and a third airway hole 22a passing through at least one end is provided in the second functional segment 22. The first functional segment 21 is provided at one end of the second functional segment 22 close to the aerosol generating matrix segment 10, wherein the aperture of the filter hole 21a is smaller than the aperture of the third airway hole 22a.

[0123] The third airway hole 22a is a hole in a macroscopic sense.

[0124] On the one hand, the pore diameter of the filter hole 21a is smaller. When the cross-sectional area of ​​the functional segment 20 is constant, more filter holes 21a can be set, which is beneficial to further increase the surface area of ​​the first functional segment 21 and enhance the filtering effect of the first functional segment 21; on the other hand, the second functional segment 22 with the third airway hole 22a is set, which can reduce the suction resistance, filter and cool down.

[0125] In some embodiments, see Figure 4 and Figure 5 The diameter of the third airway hole 22a is smaller than that of the first airway hole 10a, so as to reduce the inhalation resistance.

[0126] It can be understood that, in the embodiment where the number of the functional sections 20 is two, the airflow first enters the first functional section 21 and then enters the second functional section 22 .

[0127] The pore size of the filter hole 21a is its equivalent diameter.

[0128] It can be understood that the number of the first functional segment 21 and the second functional segment 22 can be one or more.

[0129] For example, see Fig.11There are multiple first functional segments 21 and second functional segments 22, and the two are arranged alternately along the airflow direction. The first functional segment 20 along the airflow direction is the first functional segment 21, and the last functional segment 20 along the airflow direction is the second functional segment 22.

[0130] The specific structural form of the filter hole 21a is not limited.

[0131] For example, see Fig.10 The first functional section 21 is a solid structure, and the filter holes 21a are micropores. In other words, the filter holes 21a are microscopic holes.

[0132] The first functional segment 21 is a solid structure, and the second functional segment 22 is a hollow structure, and the two are an integrated structure, which can effectively replace the functional segment 20 made of fiber material in the prior art, reduce the adverse effect of the fiber material on the aerosol extraction efficiency due to the adsorption of aerosol, and improve the user experience.

[0133] At the microscopic level, the first functional segment 21 has multiple structural layers to form micropores to increase the surface area of ​​the first functional segment 21, thereby improving the effect of filtering impurities and effectively absorbing aerosol particles with too large a diameter to enhance the user's taste.

[0134] For example, see Fig. 9 , the same filter hole 21a extends in a straight line or a curve along the length direction of the aerosol generating article. In other words, the filter hole 21a is a hole in a macroscopic sense, so that the inhalation resistance can be further reduced.

[0135] It is understandable that the airflow velocity can be adjusted by adjusting the aperture and number of the filter holes 21a and the third airway holes 22a, thereby better adjusting the filtering effect and the aerosol extraction efficiency.

[0136] It can be understood that, in some embodiments, a portion of the filter holes 21a are micropores, and another portion of the filter holes 21a are pores in a macroscopic sense.

[0137] In some embodiments, the total length of the second functional segment 22 along the length direction is not less than the total length of the first functional segment 21 along the length direction. In this way, when the total length of the functional segment 20 is constant, it is beneficial to reduce the inhalation resistance and facilitate the user to inhale the aerosol.

[0138] In some embodiments, see Figures 6 to 8 The aerosol generating substrate segment 10 is provided with functional segments 20 at both ends along the length direction, so as to better achieve the purpose of filtering and adjusting the suction resistance.

[0139] In some embodiments, see Fig.12 and Fig.13The surface of the aerosol generating matrix segment 10 is provided with a first groove 10b, and the first groove 10b runs through both ends of the aerosol generating matrix segment 10 along the length direction. In other words, the airflow can contact the inner wall of the first groove 10b, thereby entraining the aerosol generated by heating on the inner wall of the first groove 10b. In this way, by providing the first groove 10b, the surface area of ​​the aerosol generating matrix segment 10 is further expanded, which is conducive to improving the extraction efficiency of the aerosol, and improving the heat conduction efficiency, which is more conducive to the aerosol generating matrix generating aerosol.

[0140] The number of the first grooves 10b is not limited, and may be one or more.

[0141] The specific arrangement of the plurality of first grooves 10b is not limited. For example, see Fig.12 The plurality of first grooves 10b are spaced apart along the circumference of the aerosol generating substrate segment 10 so that the heating of the aerosol generating substrate segment 10 is more uniform and the aerosol generating efficiency of each part of the aerosol generating substrate segment 10 is more consistent.

[0142] In some embodiments, see Fig.14 and Fig.15 The surface of the functional section 20 is provided with a second groove 20b, and the second groove 20b runs through both ends of the functional section 20 along the length direction. In other words, the airflow can contact the inner wall of the second groove 20b. The second groove 20b can further improve the filtering effect of the functional section 20 and the cooling effect of the airflow, and at the same time, it is beneficial to reduce the suction resistance.

[0143] In some embodiments, see Fig.14 and Fig.15 The first groove 10b and the second groove 20b are correspondingly connected, so that the airflow can directly pass through the aerosol generating article through the first groove 10b and the second groove 20b.

[0144] The specific manner in which the aerosol generating substrate segment 10 and the functional segment 20 form an integrated structure is not limited.

[0145] Illustratively, the aerosol-generating substrate segment 10 and the functional segment 20 are an integral structure formed by a co-extrusion process.

[0146] The co-extrusion is an extrusion molding process in which different mixed materials are extruded from one or more molding dies. These mixed materials are respectively transported to multiple sub-channels from a multi-channel head feed end, and are converged at the outlet position of the extrusion end of the multi-channel combination mold and extruded into the same extrusion mold. Finally, each extruded material is cooled and shaped to form an integrated structure.

[0147] The co-extrusion process can make the direct connection between the aerosol generation matrix segment 10 and the functional segment 20 more stable, and improve the production efficiency of the aerosol generation product; at the same time, it makes the structure of the aerosol production matrix segment more compact, improves its internal heat transfer performance, makes the temperature during the heating process more uniform, reduces the deformation of the aerosol generation matrix due to excessive temperature, and the probability of insufficient aerosol generation due to insufficient heating, and improves the user experience. In addition, the co-extruded functional segment 20 can replace the acetate fiber filter rod in the prior art, and play the role of filtering large-particle aerosol and homogenizing the aerosol particle size, so that the aerosol particle size does not exceed 50nm (nanometer), balances the smoke to prevent excessive concentration of smoke, and at the same time plays a role in filtering and intercepting large-particle aerosol, etc., making the taste delicate and soft, and improving the physiological satisfaction of inhalation.

[0148] The material of the functional segment 20 and the aerosol generating matrix segment 10 can be the same. The advantage of using the same material is that the same material and the same feed port can achieve the difference between the aerosol generating matrix segment 10 and the functional segment 20 by changing the diameter or deforming the die, which can shorten the process flow and improve the efficiency of co-extrusion preparation.

[0149] It is understandable that in the embodiment where the functional segment 20 and the aerosol generating substrate segment 10 are made of the same material, there is no boundary line discernible to the naked eye at the junction between the functional segment 20 and the aerosol generating substrate segment 10 .

[0150] The material of the functional segment 20 and the aerosol generating matrix segment 10 can also be different, mainly using multiple extruders, each of which extrudes different types of materials, and then passes through a multi-channel combined die, unified channel extrusion, and finally forms aerosol generating products of multiple different materials. At the same time, it is helpful to reduce the use of tobacco components, and can achieve tobacco flavor supplementation by adding flavoring materials to the material of the functional segment 20, and help to sieve out molecules of harmful substances.

[0151] It is understandable that in the embodiment where the functional segment 20 and the aerosol generating substrate segment 10 are made of different materials and have different colors, a boundary line recognizable to the naked eye is formed at the junction between the functional segment 20 and the aerosol generating substrate segment 10 .

[0152] The specific process steps of the co-extrusion process are adjusted according to the specific structure and material of the aerosol generating matrix segment 10 and the functional segment 20 .

[0153] For example, when the materials and structures of the aerosol generating matrix segment 10 and the functional segment 20 are different, an intermittent feeding and three-way mold synchronous linkage process is adopted, that is, the first feed port is used for feeding the material of the aerosol generating matrix segment 10, which is extruded to the common die head of the extruder through a twin screw, and the material is molded and discharged from the first molding die head, and then reaches the common splicing die head; the second feed port is used for feeding the material of the functional segment 20, which is extruded to the common die head of the extruder through a twin screw, and the material is molded and discharged from the second molding die head, and then reaches the common splicing die head; the aerosol generating matrix segment 10 and the functional segment 20 are intermittently extruded and spliced, and co-extrusion is achieved using a common mold and a displacement molding mold.

[0154] For another example, when the aerosol generating matrix segment 10 and the functional segment 20 are made of the same material but have different structures, a continuous feeding and three-way displacement mold synchronous linkage process is adopted, that is, the aerosol generating matrix segment 10 is made of the same material and has the same feed port, and the material is pushed to the extruder die head through a twin-screw extruder device to realize the molding of the medium segment and the functional segment 20 with different structures, thereby achieving the purpose of co-extrusion through a shared splicing die head to form a single aerosol generating product.

[0155] In some embodiments, see Figure 4 and Figure 5 The shape of the cross section of the aerosol generating article along the direction perpendicular to the length is circular to accommodate users who prefer a circular cross section when inhaling.

[0156] In some embodiments, the cross-section of the aerosol-generating article along a direction perpendicular to its length is oval in shape to accommodate users who prefer a non-circular cross-section when drawing.

[0157] In some embodiments, see Fig.16 and 17 The shape of the cross section of the aerosol generating product along the direction perpendicular to the length is an oval shape (also called a runway shape, the cross section includes a pair of parallel straight edges and a pair of arc-shaped edges connecting the straight edges), so as to further improve the fit between the aerosol generating product and the lips, reduce the air intake and dilution of the aerosol caused by the gap in the process of opening and closing the lips, and reduce the muscle fatigue of the user during use.

[0158] In some embodiments, see Fig.18 The aerosol generating product includes a coating layer 30, which covers at least a portion of the circumferential surface of at least one of the functional segment 20 and the aerosol generating matrix segment 10 along the length direction, thereby providing a certain degree of protection for the functional segment 20 and the aerosol generating matrix segment 10, and at the same time, reducing the probability of the functional segment 20 and the aerosol generating matrix segment 10 being affected by moisture.

[0159] The specific material of the coating layer 30 is not limited. For example, the material is a hydrophobic material, thereby reducing the probability of water vapor in the air passing through the coating layer 30 and contacting the aerosol generating matrix segment 10, thereby causing the aerosol generating matrix to become damp and moldy, thereby extending the service life of the aerosol generating matrix and helping to improve the user's taste.

[0160] The specific type of the hydrophobic material used in the coating layer 30 is not limited, such as PC (Polycarbonate), PE, PTFE (Polytetrafluoroethylene), etc.

[0161] For another example, the thermal conductivity of the material of the coating layer 30 is greater than the thermal conductivity of the material of the aerosol generating matrix segment 10, so that the wrapping layer can transfer heat to the aerosol generating matrix segment 10 more quickly, thereby making the aerosol generating matrix segment 10 heat up more quickly and generating aerosol more quickly, which is beneficial to improving user experience; and, since the wrapping layer is wrapped around the circumferential surface of the aerosol generating matrix segment 10, the wrapping layer can make each position of the circumferential surface of the aerosol generating matrix segment 10 be heated more evenly, thereby reducing the probability of partial aerosol denaturation of the aerosol generating matrix segment 10 due to uneven heating, and the probability of partial structure falling off due to uneven structural deformation due to heating.

[0162] The specific process for forming the coating layer 30 is not limited.

[0163] For example, the material of the coating layer 30 is applied to the circumferential surface of the functional segment 20 and the aerosol generating matrix segment 10 by a laminating process, and the coating layer 30 is formed after the material is condensed. The coating layer 30 can also be wrapped around the circumference of the functional segment 20 and the aerosol generating matrix segment 10 by a rolling process.

[0164] An embodiment of the present invention also provides an aerosol generating device, which includes a heating element and an aerosol generating product of any one of the aforementioned embodiments, wherein the heating element is used to heat the aerosol generating matrix segment 10 to generate an aerosol, and an airflow enters from one end of the aerosol generating product along the length direction, enters the aerosol generating matrix segment 10 from the air inlet end of the aerosol generating matrix segment 10 and is discharged from the air outlet end of the aerosol generating matrix segment 10 entrained with the aerosol.

[0165] The specific method by which the heating element heats the aerosol generating substrate segment 10 is not limited.

[0166] For example, the heating element is a resistor / electromagnetic heating wire / sheet / needle / tube, and the heating element is in contact with the aerosol generating product. When the heating element is turned on, it transfers heat to the aerosol generating matrix segment 10 so that the aerosol generating matrix generates an aerosol. For another example, the heating element is an infrared / microwave / laser heating device, and the infrared / microwave / laser heating device irradiates high-energy infrared / microwave / laser to the aerosol generating product to heat up the aerosol generating matrix segment 10 so that the aerosol generating matrix generates an aerosol.

[0167] Thirteen specific embodiments are briefly introduced below with reference to the accompanying drawings.

[0168] First embodiment

[0169] See also Figure 1 A functional section 20 is provided on one side of the air outlet end of the aerosol generating matrix section 10, and the functional section 20 is a solid structure with micropores therein.

[0170] Second embodiment

[0171] See also Figure 2 A functional section 20 is provided on one side of the air outlet end of the aerosol generating matrix section 10, and the functional section 20 is a hollow structure in which a second airway hole 20a is provided, and the aperture of the second airway hole 20a is smaller than the aperture of the first airway hole 10a.

[0172] Third embodiment

[0173] See also Figure 2 Two functional segments 20 are provided on one side of the air outlet end of the aerosol generating matrix segment 10, one of which is the first functional segment 21, and the other is the second functional segment 22. The first functional segment 21 is located between the second functional segment 22 and the aerosol generating matrix segment 10, the filter hole 21a of the first functional segment 21 is a micropore, and the second functional segment 22 is provided with a third airway hole 22a.

[0174] Fourth embodiment

[0175] See also Figure 6 A functional section 20 is provided on both the air inlet side and the air outlet side of the aerosol generating matrix section 10, and both functional sections are solid structures with micropores therein.

[0176] Fifth embodiment

[0177] See also Figure 7 A functional section 20 is provided on both the air inlet end and the air outlet end of the aerosol generating matrix section 10, and both functional sections are hollow structures, in which a second airway hole 20a is provided, and the aperture of the second airway hole 20a is smaller than the aperture of the first airway hole 10a.

[0178] Sixth embodiment

[0179] See also Figure 8 A functional segment 20 is provided on both the air inlet side and the air outlet side of the aerosol generating matrix segment 10, wherein the functional segment 20 located on the air inlet side of the aerosol generating matrix segment 10 is a solid structure with micropores therein; the functional segment 20 located on the air outlet side of the aerosol generating matrix segment 10 is a hollow structure with a second airway hole 20a.

[0180] Seventh embodiment

[0181] See also Fig. 9 Two functional sections 20 are provided on one side of the air outlet end of the aerosol generating matrix section 10, one of which is a first functional section 21 and the other is a second functional section 22, wherein the filter holes 21a in the first functional section 21 are holes in a macroscopic sense.

[0182] Eighth embodiment

[0183] See also Fig.10 Two functional sections 20 are provided on one side of the air outlet end of the aerosol generating matrix section 10, one of which is a first functional section 21 and the other is a second functional section 22, wherein the filter holes 21a in the first functional section 21 are micropores.

[0184] Ninth embodiment

[0185] See also Fig.11 Four functional segments 20 are provided on one side of the air outlet end of the aerosol generating substrate segment 10, wherein the first functional segment 21 and the second functional segment 22 are alternately arranged along the air flow direction.

[0186] Tenth embodiment

[0187] See also Fig.12 and Fig.13 The surface of the aerosol generating substrate segment 10 is provided with a first groove 10b.

[0188] Eleventh Embodiment

[0189] See also Fig.14 and Fig.15 A first groove 10b is provided on the surface of the aerosol generating substrate segment 10, a second groove 20b is provided on the surface of the functional segment 20, and the first groove 10b is connected to the second groove 20b.

[0190] Twelfth Embodiment

[0191] See also Fig.16 and Fig.17 The cross-sectional shape of the aerosol generating product along the length direction is an oval shape.

[0192] Thirteenth Embodiment

[0193] See also Fig.18The coating layer 30 is coated on the circumferential surface of the functional segment 20 and the aerosol generating matrix segment 10 along the length direction.

[0194] Fourteenth Embodiment

[0195] See also Fig.19 The air inlet of the aerosol generating substrate segment 10 is partially located at one end along the length direction thereof, and the other part is located at one side perpendicular to the length direction thereof; the air outlet end is the other end along the length direction thereof.

[0196] Fifteenth Embodiment

[0197] See also Fig. 20 The air inlet end and the air outlet end of the aerosol generating substrate segment 10 are the same end along the length direction thereof.

[0198] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0199] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An aerosol generating product, characterized in that include: an aerosol generating substrate section, for generating aerosol when heated; At least one functional segment, wherein the functional segment is provided on at least one of the two sides of the aerosol generating substrate segment along the length direction; The aerosol generating substrate segment and the functional segment are an integrated structure.

2. The aerosol-generating article according to claim 1, wherein The total length of the functional segment along the length direction is not less than the dimension of the aerosol generating substrate segment along the length direction.

3. The aerosol-generating article according to claim 2, wherein: The ratio of the total length of the functional segment along the length direction to the total length of the aerosol generating substrate segment along the length direction ranges from 1 to 3.

4. The aerosol-generating article of claim 1, wherein: A first airway hole is provided in the aerosol generating substrate segment. The first airway hole runs through at least one end of the aerosol generating substrate segment. The aperture of the first airway hole ranges from 0.05 mm to 6 mm.

5. An aerosol generating article according to claim 4, characterized in that The functional section is provided with a second airway hole, and the aperture of the second airway hole is smaller than the aperture of the first airway hole.

6. The aerosol-generating article of claim 4, wherein: The ratio of the aperture of the first airway hole to the aperture of the second airway hole is not less than 10.

7. The aerosol-generating article of claim 1, wherein: The functional section is of a solid structure and is provided with a plurality of micropores.

8. The aerosol-generating article of claim 1, wherein: A plurality of functional segments are provided on one side of the air outlet end of the aerosol generating matrix segment, wherein one of the functional segments is a first functional segment, and another of the functional segments is a second functional segment, wherein the first functional segment is provided with a filter hole, and the second functional segment is provided with a third airway hole passing through at least one end, and the first functional segment is provided near one end of the aerosol generating matrix segment, wherein the aperture of the filter hole is smaller than the aperture of the third airway hole.

9. An aerosol generating article according to claim 8, characterized in that The first functional section is a solid structure, and the filter holes are micropores; or, the same filter hole extends in a straight line or a curve along the length direction of the aerosol generating article.

10. The aerosol-generating article of claim 8, wherein: The total length of the second functional segment along the length direction is not less than the total length of the first functional segment along the length direction.

11. The aerosol-generating article of claim 1 , wherein: The functional sections are arranged at both ends of the aerosol generating substrate section along the length direction.

12. The aerosol-generating article of claim 1, wherein: A first groove is provided on the surface of the aerosol generating matrix segment, and the first groove runs through both ends of the aerosol generating matrix segment along the length direction; and\or, a second groove is provided on the surface of the functional segment, and the second groove runs through both ends of the functional segment along the length direction.

13. The aerosol-generating article of claim 1, wherein: The aerosol generating substrate segment and the functional segment are an integrated structure formed by a co-extrusion process; and / or the cross-section of the aerosol generating product perpendicular to the length direction is in the shape of a circle, an ellipse, or an oval.

14. The aerosol-generating article of claim 1, wherein: The aerosol generating product includes a coating layer, which covers at least a portion of the circumferential surface of at least one of the functional segment and the aerosol generating matrix segment along the length direction, and the material of the coating layer is a hydrophobic material; and / or the thermal conductivity of the material of the coating layer is greater than the thermal conductivity of the material of the aerosol generating matrix segment.

15. An aerosol generating device, characterized in that: An aerosol-generating article comprising a heating element and any one of claims 1 to 14, wherein the heating element is used to heat the aerosol-generating substrate segment to generate an aerosol.

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