Aerosol-forming substrates and aerosol-forming products

Abstract

The present application relates to the technical field of smoke-generating products and provides an aerosol-generating substrate and an aerosol-generating product. The aerosol-generating substrate includes a plurality of units, at least some of which differ in at least one parameter, including the material of the units, the number of airways, the shape of the airways, the hydraulic diameter of the airways, the cross-sectional area of ​​the airways, and the arrangement of the airways, where the airways penetrate at least one end along the length of the units, and the number of airways is a natural number. The differing at least one parameter of at least some of the units can provide a richer mouthfeel. By adjusting the material of the units and the configuration of the airways, the composition of the aerosol smoke generated from the aerosol-generating substrate and the heat accumulation during the heating process can be controlled, thereby improving the flavor and consistency of the aerosol release.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims priority from a Chinese patent application bearing application number 202310181684.9, filed with the China Patent Office on February 20, 2023, the entire contents of which are incorporated herein by reference.

[0002] This application relates to the technical field of smoke-producing products, and in particular to aerosol-forming substrates and aerosol-forming products. [Background technology]

[0003] Smoke-generating products include those that generate aerosols upon ignition and those that generate aerosols by non-combustion heating. A typical non-combustion heating smoke-generating product contains an aerosol-generating substrate, such as tobacco, flavoring, and / or propellant, that volatilizes upon heating to generate an aerosol. The smoke-generating product is heated using an external heat source until the aerosol-generating substrate is heated just enough to emit smoke, but the aerosol-generating substrate does not burn. The aerosol-generating substrate contains an atomizer, which is released by high-temperature heating during use to generate smoke.

[0004] In the related art, the constituent components of each part of the aerosol-generating substrate are the same, and there is no or very little difference between each part of the aerosol-generating substrate, so the aerosol generated from the aerosol-generating substrate has a uniform flavor, and the aerosol-generating substrate is prone to developing an unpleasant taste after being heated for a long time, which affects the user's inhalation experience. Summary of the Invention

[0005] In view of the above, embodiments of the present application aim to provide an aerosol-forming substrate and an aerosol-forming product that can improve mouthfeel.

[0006] To achieve the above object, an embodiment of the present application provides an aerosol-generating substrate, the aerosol-generating substrate comprising a plurality of units, at least some of which differ in at least one parameter, the parameters including the material of the units, the number of airways, the shape of the airways, the hydraulic diameter of the airways, the cross-sectional area of ​​the airways, and the arrangement of the airways, the airways penetrating at least one end along the length of the units, and the number of airways is a natural number.

[0007] In some embodiments, a plurality of the monomers are stacked one on top of the other along the length of the monomer.

[0008] In some embodiments, each of the monomers is provided with an airway, and at least one airway of at least two adjacent monomers is aligned and communicates with each other.

[0009] In some embodiments, the monomers are fitted together one by one along the medial-lateral direction.

[0010] In some embodiments, there is a gap between two adjacent monomers in the medial-lateral direction.

[0011] In some embodiments, the plurality of monomers are joined one by one along the circumferential direction.

[0012] In some embodiments, the air passages include pores, the pores being disposed within the monolith.

[0013] In some embodiments, the pores extend through two end faces along the length of the monomer.

[0014] In some embodiments, the pores penetrate one end face along the length of the monomer and the circumferential surface of the monomer.

[0015] In some embodiments, the pores are straight pores extending along a straight line.

[0016] In some embodiments, the centerline of the linear hole intersects with the central longitudinal axis of the monomer.

[0017] In some embodiments, the number of linear holes on a single said monomer is plural, and the distance between a first end of the linear hole on a single said monomer and the central axis of said monomer is greater than the distance between a second end of the linear hole and the central axis of said monomer.

[0018] In some embodiments, the centerline of the straight hole is parallel to the central longitudinal axis of the monomer.

[0019] In some embodiments, the pores are curved pores, and at least some pore sections of the curved pores have a curved shape with a non-zero curvature.

[0020] In some embodiments, the curved hole exhibits a spiral shape.

[0021] In some embodiments, the number of pores in a single unit is 1 to 730.

[0022] In some embodiments, the airway comprises a groove in a circumferential surface of the monolith.

[0023] In some embodiments, at least one said unit forms a plurality of said airways, and at least some of the airways of a single said unit have the same shape.

[0024] In some embodiments, each of said monomers defines an airway, and the shape of at least one airway in each of said monomers is different.

[0025] In some embodiments, the number of said monomers is between 2 and 30.

[0026] The present application further provides an aerosol-generating product, the aerosol-generating product comprising: an aerosol-generating substrate according to any one of the above; a functional step portion provided at one end along the length of the aerosol-generating substrate and including at least a filtering step portion for filtering the aerosol; and an outer wrapping layer that wraps around the outer periphery of the functional step and the outer periphery of the aerosol-generating substrate.

[0027] In some embodiments, the functional stage further comprises a cooling stage located between the filtration stage and the aerosol-generating substrate.

[0028] In the aerosol-generating substrates provided in the examples of the present application, at least one parameter of at least some of the substrates can be varied, thereby providing a richer mouthfeel. Different substrate materials can achieve different flavor combinations and enrich the inhalation experience. Because airflow velocity is related to aerosol extraction, different airway numbers, airway shapes, airway hydraulic diameters, airway cross-sectional areas, and / or airway arrangements within the substrate can adjust the airflow velocity and / or flow rate, thereby achieving the effect of adjusting the aerosol extraction rate. Adjusting the substrate materials and airway configurations in this way can control the composition of the aerosol smoke generated from the aerosol-generating substrate and the heat accumulation during the heating process, thereby improving the aerosol flavor and release consistency. [Brief explanation of the drawings]

[0029] [Figure 1] FIG. 1 is a schematic diagram showing the configuration of a first type of aerosol-generating product according to an embodiment of the present application. [Figure 2] FIG. 2 is a schematic diagram showing a cross section of the aerosol-generating product shown in FIG. 1. [Figure 3] FIG. 2 is a schematic diagram showing the configuration of a second type of aerosol-generating product according to an embodiment of the present application. [Figure 4] FIG. 2 is a schematic diagram showing the configuration of a third type of aerosol-generating product according to an embodiment of the present application. [Figure 5] FIG. 1 is a schematic diagram showing the configuration of a fourth type of aerosol-generating product according to an embodiment of the present application. [Figure 6]FIG. 1 is a schematic diagram showing the configuration of a first type of aerosol-generating substrate according to an example of the present application. [Figure 7] FIG. 7 is a perspective view of the aerosol-generating substrate shown in FIG. 6. [Figure 8] FIG. 2 is a perspective view of a second type of aerosol-generating substrate according to an embodiment of the present application. [Figure 9] FIG. 1 is a perspective view of a third type of aerosol-generating substrate according to an embodiment of the present application. [Figure 10] FIG. 1 is a perspective view of a fourth type of aerosol-generating substrate according to an embodiment of the present application. [Figure 11] FIG. 1 is a schematic diagram showing the structure of a fifth type of aerosol-generating substrate according to an example of the present application. [Figure 12] FIG. 12 is a perspective view of the fifth type of aerosol-generating substrate shown in FIG. [Figure 13] FIG. 1 is a perspective view of a sixth type of aerosol-generating substrate according to an embodiment of the present application. [Figure 14] FIG. 1 is a perspective view of a seventh type of aerosol-generating substrate according to an embodiment of the present application. [Figure 15] FIG. 1 is a perspective view of an eighth type of aerosol-generating substrate according to an embodiment of the present application. [Figure 16] FIG. 1 is a perspective view of a ninth type of aerosol-generating substrate according to an embodiment of the present application. [Figure 17] FIG. 1 is a perspective view of a tenth type of aerosol-generating substrate according to an embodiment of the present application. [Figure 18] FIG. 1 is a perspective view of an eleventh type of aerosol-generating substrate according to an embodiment of the present application. [Figure 19] FIG. 1 is a schematic diagram showing the structure of a twelfth type of aerosol-generating substrate according to an example of the present application. [Figure 20] FIG. 20 is a perspective view of the twelfth type of aerosol-generating substrate shown in FIG. 19. [Figure 21] FIG. 1 is a schematic diagram showing the structure of the 13th type of aerosol-generating substrate according to an example of the present application. [Figure 22] FIG. 1 is a schematic diagram showing a cross section of a 14th type of aerosol-generating substrate according to an embodiment of the present application. [Figure 23]FIG. 1 is a schematic diagram showing a cross section of a 15th type of aerosol-generating substrate according to an embodiment of the present application. [Figure 24] FIG. 1 is a schematic diagram showing a cross section of a 16th type of aerosol-generating substrate according to an embodiment of the present application. [Figure 25] FIG. 1 is a schematic diagram showing a cross section of a 17th type of aerosol-generating substrate according to an embodiment of the present application. [Figure 26] FIG. 1 is a schematic diagram showing the structure of the 18th type of aerosol-generating substrate according to an example of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0030] Furthermore, unless there is a contradiction, the examples of the present application and the technical features in the examples can be combined with each other, and the detailed description of the specific embodiments should be understood as explaining the gist of the present application and should not be considered as an undue limitation on the present application.

[0031] An embodiment of the present application provides an aerosol-generating substrate 10. The aerosol-generating substrate 10 is heated and used to generate an aerosol.

[0032] For example, the aerosol-generating substrate 10 can be used to generate an aerosol by a heating and combustion method. The aerosol-generating substrate 10 can also be used to generate an aerosol by a non-combustion heating method. That is, the aerosol-generating substrate 10 generates an aerosol by being heated below its ignition point. The aerosol-generating substrate 10 does not burn during the process of generating an aerosol.

[0033] 6 to 26, the aerosol-generating substrate 10 includes a plurality of units 11, and at least one parameter of at least some of the units 11 is different. The parameters include the material of the units 11, the number of airways 11a, the shape of the airways 11a, the hydraulic diameter of the airways 11a, the cross-sectional area of ​​the airways 11a, and the arrangement of the airways 11a, where the airways 11a penetrate at least one end along the length of the units 11, and the number of airways 11a is a natural number.

[0034] The airway 11a is used to collect and distribute aerosol. For example, in one embodiment, referring to FIGS. 23 and 24, the airway 11a penetrates one end of the main body 11 along its length, and the other end of the airway 11a is closed. The airway 11a not only adjusts the heating rate during the heating process of the main body 11, but also temporarily stores the aerosol and promotes its deposition. In a non-inhaled state, the aerosol is released and stored in the airway 11a. During inhalation, the airflow velocity near the lips of the main body 11 is fast, i.e., the air pressure is low, so the aerosol stored in the airway 11a is deposited and inhaled by the user. During the user's inhalation process, there is a gap, i.e., a rest period, during which the aerosol is replenished in the airway 11a. If the gap period is too long, the aerosol in the airway 11a will overflow into the main body 11, ensuring uniformity of the aerosol in the airway 11a and thereby ensuring consistency of the user's inhalation.

[0035] 6 to 22, in another embodiment, the airway 11a penetrates both ends of the main body 11 that are opposite to each other along the length thereof, thereby allowing the airflow to flow from one end to the other end of the main body 11. In this way, the airflow formed by the air carrying the aerosol flows more smoothly and the flow resistance of the airflow is reduced, thereby significantly reducing the resistance to inhalation during the inhalation process and improving the inhalation experience.

[0036] Natural numbers include zero and positive integers. That is, in some embodiments, referring to Figure 19, the unit 11 may not have an airway 11a. In other embodiments, referring to Figures 6 to 18, the unit 11 includes one or more airways 11a.

[0037] It should be noted that in this application, plural includes two and more than two.

[0038] Illustratively, in some embodiments, at least some of the units 11 are different in one parameter, and this parameter may be one of the material of the units 11, the number of airways 11a, the shape of the airways 11a, the hydraulic diameter of the airways 11a, the cross-sectional area of ​​the airways 11a, and the arrangement of the airways 11a. For example, the material of at least some of the units 11 is different, but the number of airways 11a, the shape of the airways 11a, the hydraulic diameter of the airways 11a, the cross-sectional area of ​​the airways 11a, and the arrangement of the airways 11a are all the same for all of the units 11. For example, in the case of three units 11, the material of two units 11 is different from that of the other unit 11, but the number of airways 11a, the shape of the airways 11a, the hydraulic diameter of the airways 11a, the cross-sectional area of ​​the airways 11a, and the arrangement of the airways 11a are all the same for the three units 11.

[0039] In other embodiments, at least some of the units 11 have different parameters, which may be at least two of the material of the units 11, the number of airways 11a, the shape of the airways 11a, the hydraulic diameter of the airways 11a, the cross-sectional area of ​​the airways 11a, and the arrangement of the airways 11a. For example, at least some of the units 11 have different two parameters, the number of airways 11a and the shape of the airways 11a, and all of the units 11 have the same material, hydraulic diameter of the airways 11a, the cross-sectional area of ​​the airways 11a, and the arrangement of the airways 11a.

[0040] The material of the monomer 11 includes the compositional components and the ratio of each compositional component.

[0041] The shape of the airway 11a includes the cross-sectional shape of the airway 11a and the spatial shape of the airway 11a. The cross section is a plane perpendicular to the longitudinal direction of the unit 11. The cross-sectional shape of the airway 11a refers to the shape that appears when the single airway 11a is cut in cross section.

[0042] The hydraulic diameter refers to the ratio of four times the cross-sectional area of ​​the airway 11a to the perimeter. The cross-section of the airway 11a refers to a cross section taken perpendicular to the fluid flow line. For example, if the cross-sectional shape of the airway 11a is square, the hydraulic diameter is the ratio of four times the cross-sectional area of ​​the square airway 11a to the perimeter of the square. In another example, if the cross-sectional shape of the airway 11a is circular, the hydraulic diameter is the diameter of the circular airway 11a.

[0043] The arrangement of the airways 11 a refers to the distribution pattern of the airways 11 a on the unit 11 .

[0044] The aerosol-generating substrate 10 provided in the present embodiment can provide a richer mouthfeel by varying at least one parameter of at least some of the units 11. Different materials for the units 11 can achieve different flavor combinations, enriching the inhalation experience. Because airflow velocity is related to aerosol extraction, varying the number, shape, hydraulic diameter, cross-sectional area, and / or arrangement of the airways 11a within the units can adjust the airflow velocity and / or flow rate, thereby controlling the aerosol extraction rate. Thus, adjusting the material of the units 11 and the configuration of the airways 11a can control the composition of the aerosol smoke generated from the aerosol-generating substrate 10 and the heat accumulation during the heating process, thereby improving the aerosol flavor and release consistency.

[0045] The aerosol-generating substrate 10 provided in the embodiments of the present application is used in an aerosol-generating product. Referring to Figures 1 to 5, the aerosol-generating product includes the aerosol-generating substrate 10 according to any embodiment of the present application, a functional step 20, and an outer packaging layer 30. The functional step 20 is provided at one end along the length of the aerosol-generating substrate 10, and includes a filtering step 21 for filtering the aerosol. The outer packaging layer 30 surrounds the outer periphery of the functional step 20 and the outer periphery of the aerosol-generating substrate 10.

[0046] The filtration stage 21 is used to filter the aerosol generated from the aerosol-generating substrate 10 .

[0047] The aerosol-generating product is used by a user to inhale the aerosol generated from the aerosol-generating substrate 10. For example, the user can hold the filtering stage 21 in their mouth and inhale the filtered aerosol. The aerosol generated from the aerosol-generating substrate 10 is sent to the filtering stage 21 through the airway 11a under the action of negative suction pressure.

[0048] In some embodiments, referring to FIG. 2, the functional stage 20 may comprise only the filtering stage 21.

[0049] In some other embodiments, referring to Figure 3, the functional stage 20 further includes a cooling stage 22, which is located between the filtering stage 21 and the aerosol-generating substrate 10. The cooling stage 22 is used to cool the aerosol before it is filtered by the filtering stage 21. The cooling stage 22 can improve the "mouth burning" phenomenon when a user inhales the aerosol.

[0050] The outer packaging layer 30 may include, but is not limited to, one or more combinations of materials such as fiber paper, metal foil, metal foil composite fiber paper, polyethylene (PE) composite fiber paper, polyethylene (PE), polybutylene adipate terephthalate (Polybutylene Adipate Terephthalate), and the like.

[0051] The cooling material used in the cooling stage 22 may include, but is not limited to, one or more combinations of materials such as polyethylene (PE), polylactic acid (PLA), polybutylene adipate terephthalate (PBAT), polypropylene (PP), acetate fiber, acrylic fiber, and the like.

[0052] The cooling material used in the filtration stage 21 may include, but is not limited to, one or more combinations of materials such as polyethylene (PE), polylactic acid (PLA), polybutylene adipate terephthalate (PBAT), polypropylene (PP), acetate fiber, acrylic fiber, and the like.

[0053] The cooling stage 22 and the filtering stage 21 may be made of the same material or different materials.

[0054] The carrier 11 is solid. The components of the carrier 11 are not limited here, and for example, in one embodiment, the components of the carrier 11 may include a plant component, an auxiliary component, a smoke generating component, an adhesive component, etc.

[0055] In one embodiment, the botanical ingredients are one or more combinations of powders formed after milling tobacco leaf stock, tobacco flakes, tobacco stems, tobacco powder, flavoring plants, etc. The botanical ingredients are used to generate an aerosol containing nicotine, etc., upon heating.

[0056] In one embodiment, the auxiliary component may be one or a combination of inorganic fillers, lubricants, and emulsifiers. Here, the inorganic fillers may be one or a combination of ground calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic fillers can provide skeletal support for the plant components. At the same time, the inorganic fillers also have micropores, which can improve the porosity of the wall material after the plant components are formed, thereby improving the aerosol release rate.

[0057] The lubricant may be one or a combination of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase the fluidity of particles, reduce the friction between particles, make the density of the entire particle distribution more uniform, reduce the pressure required for molding, and reduce mold wear.

[0058] The emulsifier may be one or a combination of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers (also known as surfactants) reduce the interfacial tension between the water-soluble and water-insoluble components in a mixed system, forming a relatively strong thin film on the surface of the microdroplets, or they impart an electric charge that forms a double electric layer on the surface of the microdroplets, preventing the microdroplets from coagulating and maintaining a uniform emulsion. Emulsifying and homogenizing two immiscible components can improve the consistency of product quality.

[0059] The function of the smoke injector component is to enhance the smoke yield of the smoke product by generating a large amount of vapor upon heating. In one embodiment, the smoke injector may be one or more of the following: a monohydric alcohol (e.g., menthol), a polyhydric alcohol (e.g., propylene glycol, triethylene glycol, 1,3-butanediol, and glycerin), an ester of a polyhydric alcohol (e.g., monoacetin, diacetin, or triacetin), an aliphatic ester of a monocarboxylic acid, a polycarboxylic acid (e.g., lauric acid, myristic acid), or a polycarboxylic acid (e.g., dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, triacetin, mesoerythritol, a diacetin mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, tributyrin, lauryl acetate, etc.).

[0060] In one embodiment, the adhesive component is a natural plant extract, a nonionic modified viscous polysaccharide, and a combination of one or more of tamarind polysaccharide, pullulan, seaweed polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive is used to adhere the particles together and prevent them from falling apart. Furthermore, the adhesive improves the water resistance of the aerosol-generating substrate 10, is harmless to the human body, and has certain health benefits.

[0061] In one embodiment, the monomers 11 are independent of each other, meaning that each monomer 11 is individually manufactured and produced.

[0062] In one embodiment, multiple monomers 11 may be connected together. For example, multiple monomers 11 may be joined together by compounding, gluing, twisting, or interference fitting.

[0063] In one embodiment, the unit 11 has a monolithic structure. For example, the unit 11 may be a monolithic structure formed by a process such as injection molding, compression molding, or extrusion molding. Here, extrusion refers to a processing method in which a raw material mixture is introduced into an extruder, where the raw material mixture is heated and plasticized by the action between the cylinder and screw of the extruder, and then extruded forward by the screw, continuously passing through a die at the extruder's outlet to produce products or semi-finished products with various cross sections. The aerosol substrate formed by extrusion molding has a rod-like shape. In this way, the unit 11 remains a monolithic medium even after heating and suction or after heating is stopped, and is less likely to collapse or fall off. This solves the problems encountered with the three types of aerosol-generating substrates 10 in the prior art: flake-shaped, dispersed particle-shaped, and filament-shaped forms, such as peeling of flakes, shedding of filamentous or particulate components, and difficulty in cleaning.

[0064] 6 to 18, in one embodiment, a plurality of units 11 are stacked one by one along the length of the units 11. Airflow flows from the distal lip side to the proximal lip side along the length of the units 11, and by stacking a plurality of units 11 one by one along the length, the aerosol generated by the units 11 located on the distal lip side and the aerosol generated by the units 11 on the proximal lip side are reconstituted, making the overall flavor of the aerosol more uniform and rich.

[0065] The far-labial side refers to the side farther from the user's lips, and the near-labial side is opposite to the far-labial side.

[0066] In the embodiments of the present application, the length direction does not necessarily refer to the direction in which the external outline of the unit 11 is longest. When the aerosol-generating product has a functional step 20, the arrangement direction of the functional step 20 and the aerosol-generating substrate 10 coincides with the length direction, and the direction in which the aerosol-generating product is inserted into the heater and the direction in which the aerosol-generating product is removed from the heater are also parallel to the length direction. The length of the unit 11 along the length direction may be longer, shorter, or the same as the length in other directions.

[0067] For example, if the outer contour of the monomer 11 is cylindrical, the length direction is the axial direction of the monomer 11. Note that even if the axial length of the monomer 11 is smaller than its diameter, the length direction of the monomer 11 is still the axial direction. In yet another example, if the outer contour of the monomer 11 is rectangular, the length direction is still the direction defined above, i.e., the direction in which the functional step 20 and the aerosol-generating substrate 10 are arranged, or the direction in which the aerosol-generating product is dispensed, and the length direction of the aerosol-generating substrate 10 may be any of the length, width, or height directions of the rectangular parallelepiped.

[0068] When the unit 11 is used alone, i.e., when it is not combined with the functional step portion 20, the length direction is the perpendicular direction to the distance between both ends of the unit 11. For example, when the unit 11 is cylindrical, the length direction is the perpendicular direction to the distance between both end faces. For example, when the unit 11 is cylindrical with a cross section of a triangle, polygon, sector, oval, ellipse, etc., the length direction is the axial direction. When the unit 11 is a rectangular prism, the length direction of the unit 11 may be any of the length, width, and height directions of the rectangular prism.

[0069] The aerosol-generating product is used in combination with an aerosol-generating device that includes a heater, which generates an aerosol by heating and atomizing the aerosol-generating substrate 10.

[0070] The heating method of the heater includes, but is not limited to, resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, and the like.

[0071] For example, in one embodiment, the heater includes multiple independently controlled heating elements spaced apart along the length, each heating element heating a corresponding one of the monomers 11. The heating elements can provide thermal energy. Selective heating of the monomers 11 by the heating elements can achieve directional and selective release of aerosols of different monomers 11. For example, directional and selective release of aerosols of different flavors can be achieved, which can avoid off-tastes caused by repeated heating, ensure fresh aerosol with each sip, and improve consistency of inhalation.

[0072] In one embodiment, the heater includes one heating element, and the heating element and the aerosol-generating substrate 10 can be moved relative to each other along the length direction. In this way, by selectively heating the monomers 11 with one heating element, it is possible to realize directional and selective release of aerosols from different monomers 11, thereby reducing the number of heating elements and saving structural components.

[0073] The power source of the heating element is not limited, and for example, in one embodiment, the heating element is manual, i.e., the heating element is moved by hand. In another embodiment, the electronic atomizer includes a driving source that drives and moves the heating element or the aerosol-generating substrate 10.

[0074] The driving source includes, but is not limited to, a motor.

[0075] 6 to 18, in one embodiment, each unit 11 is provided with an airway 11a, and at least one airway 11a of at least two adjacent units 11 is at least partially aligned and communicates with each other. That is, in two adjacent units 11, at least a portion of at least one airway 11a of one unit 11 is aligned and communicates with the airway 11a of the other adjacent unit 11. That is, along the length of the units 11, two airways 11a are respectively located in two adjacent units 11, and the projection of the end of one airway 11a onto the adjacent end of the other airway 11a at least partially overlaps. In this way, aerosol in one airway 11a can smoothly enter the other airway 11a along the length of the units 11, reducing airflow resistance and reducing inhalation resistance during the user's inhalation process. This allows for the aerosol to be regulated and improved, resulting in more uniform and stable aerosol release.

[0076] 7, 11 to 13, and 15 to 18, in one embodiment, the number of airways 11a in each unit 11 is equal, and the airways 11a in each unit 11 are aligned and communicate with each other on a one-to-one basis. Illustratively, the cross-sectional shapes and cross-sectional areas of the ends of the airways 11a in each unit 11 are the same, and the ends of the airways 11a in each unit 11 are aligned and communicate with each other on a one-to-one basis. In this way, the airflow in the airway 11a of the unit 11 on the far-labial side can directly enter the airway 11a of the unit 11 on the near-labial side, which is aligned and communicates with the airway 11a, resulting in little loss of airflow.

[0077] 8, 9, and 10, in one embodiment, the numbers of airways 11a in two adjacent units 11 are unequal, and each airway 11a in one unit 11 is aligned with and communicates with multiple airways 11a in the other unit 11. Illustratively, in two adjacent units 11, the cross-sectional area of ​​the end of the airways 11a in one unit 11 is larger than the cross-sectional area of ​​the end of the airways 11a in the other unit 11, and the ends of the multiple airways 11a with smaller cross-sectional areas are aligned with the end of one airway 11a with larger cross-sectional area. In this way, airflow in the airways 11a with smaller cross-sectional areas can be concentrated in the airways 11a with larger cross-sectional areas, or airflow in the airways 11a with larger cross-sectional areas can be dispersed into the airways 11a with smaller cross-sectional areas.

[0078] 19 to 25, in one embodiment, the multiple units 11 are fitted together one by one along the inner and outer directions. In this way, it is easy to combine different heating methods, and each unit 11 can emit aerosol individually as heating time passes. For example, in a central heating method, heat is transferred from the center to the edges as time passes, or in a circumferential heating method, heat is transferred from the edges to the center as time passes, thereby adjusting the flavor of the aerosol emitted from the units 11 and providing the user with a completely new inhalation experience.

[0079] The term "inside" refers to the direction closer to the center of the aerosol-generating substrate 10, and the term "outside" refers to the opposite.

[0080] 19 to 25, in one embodiment, a gap 11b is formed between two adjacent monomers 11 in the inward / outward direction. The gap 11b may be empty, i.e., the gap 11b is filled with air rather than a solid material. Because air is a poor conductor of heat, the gap 11b can provide thermal insulation. During the heating process, after a certain monomer 11 reaches the emission temperature and emits, the next medium is gradually heated, and each monomer 11 emits aerosol. This reduces the impact of the emitting monomers 11 on the unemitted monomers 11. That is, the monomers 11 of the aerosol emitted at regular intervals are always fresh, thereby enabling the gradual release of specific aerosol flavors or the gradual release of a single flavor, which allows the flavor of the aerosol to be adjusted or makes the aerosol purer. In other words, the impact of the previously heated monomers 11 on the aerosol emission of the subsequently heated monomers 11 is reduced.

[0081] 26, in one embodiment, the multiple units 11 are joined together one by one along the circumferential direction, which makes it easy to combine with different heating methods, allowing each unit 11 to release its own aerosol over time, achieving the directional and selective release of aerosols with different flavors, avoiding the unpleasant taste caused by repeated heating of the aerosol-generating substrate 10, ensuring fresh aerosol with each sip, and improving inhalation consistency.

[0082] For example, in one embodiment, the heater includes multiple independently controlled heating elements spaced apart along the circumference of the aerosol-generating substrate 10, each heating element heating a corresponding one of the monomers 11. Selective heating of the monomers 11 by the heating elements allows for the directional and selective release of aerosols of different monomers 11. For example, this allows for the directional and selective release of aerosols with different flavors, avoiding off-tastes caused by repeated heating, ensuring fresh aerosols with each sip, and improving inhalation consistency.

[0083] For example, in one embodiment, the heater includes one heating element, and the heating element and the aerosol-generating substrate 10 can rotate relative to each other along the circumferential direction of the aerosol-generating substrate 10. In this way, it is possible to individually heat the different units 11 while reducing the number of heating elements and saving structural parts.

[0084] Illustratively, in one embodiment, the heating element or aerosol-generating substrate 10 is manual, i.e., the heating element or aerosol-generating substrate 10 is rotated by hand. In another embodiment, a driving source rotates the heating element or aerosol-generating substrate 10.

[0085] 7 to 26, in one embodiment, the air passage 11a includes pores 111a, which are provided inside the monomer 11. The pores 111a are used to collect and distribute the aerosol. The pores 111a can increase the surface area inside the monomer 11, thereby improving the extraction rate of the aerosol.

[0086] 7 to 10, 13, 25, and 26, in one embodiment, pores 111a penetrate two end faces along the length of the unit 11. During inhalation, air enters the pores 111a from the distal lip side of the unit 11 and then flows out to the proximal lip side. The airflow quickly carries away the aerosol in the pores 111a, accelerating the deposition of the aerosol and reducing the flow resistance of the airflow.

[0087] 11 and 12, in one embodiment, the pores 111a penetrate one end face along the length of the monomer 11 and the circumferential surface of the monomer 11. Such a design not only increases the contact area between the airflow and the outer surface of the medium and facilitates heat exchange between the pores 111a and the circumferential surface of the monomer 11, reducing heat accumulation in the monomer 11, but also makes it easier for the aerosol to flow between the pores 111a and the circumferential surface of the monomer 11, increasing the airflow rate on the circumferential surface of the monomer 11, thereby improving heating efficiency and the uniformity of aerosol emission.

[0088] 7 to 14, in one embodiment, the air holes 111a are straight holes 1111a that extend along a straight line. The straight holes 1111a are easy to mold, reducing the difficulty of manufacturing. The flow resistance of the airflow in the straight holes 1111a is relatively small.

[0089] 11 to 14, in one embodiment, the center line of the straight hole 1111a intersects with the central axis along the length direction of the monomer 11. This design lengthens the flow path of the airflow within the straight hole 1111a, and can extend the contact time between the airflow and the hole wall surface of the straight hole 1111a, thereby improving the aerosol extraction rate.

[0090] The center line of the pore 111a is a line connecting the geometric centers of each flow cross section of the pore 111a. For example, the center line of the straight pore 1111a is a line connecting the geometric centers of each flow cross section of the straight pore 1111a, and the center line of the straight pore 1111a is a single straight line. The central axis of the unit 11 is a line connecting the geometric centers of two end faces along the length of the unit 11. For example, if the unit 11 is a cylindrical body, the central axis of the unit 11 is a line connecting the centers of two circular end faces along the length of the unit 11.

[0091] 12 and 13 , in one embodiment, a single monomer 11 has a plurality of linear holes 1111a, and the distance between the first end of each linear hole 1111a on the single monomer 11 and the central axis of the monomer 11 is greater than the distance between the second end of each linear hole 1111a and the central axis of the monomer 11. That is, the first ends of each of the linear holes 1111a are all farther from the central axis of the monomer 11, and the second ends of each of the linear holes 1111a are all closer to the central axis of the monomer 11. The first ends of each of the linear holes 1111a diverge outward, and the second ends of each of the linear holes 1111a converge inward. In this way, the linear holes 1111a can converge or disperse airflow, thereby providing different inhalation experiences to users.

[0092] 7 to 10, in one embodiment, the center line of the straight hole 1111a is parallel to the central axis along the longitudinal direction of the unit 11. In this way, the airflow path of the airflow within the straight hole 1111a is shortened, making it easier for the aerosol to reach the near-labial side quickly.

[0093] 15 to 18, in one embodiment, the pores 111a are curved holes 1112a, and at least a portion of the pore sections of the curved holes 1112a exhibits a curved shape with a curvature that is not 0. The curved holes 1112a can significantly increase the flow path of the airflow without significantly increasing the length of the monomer 11, and can extend the contact time between the airflow and the pore wall surface of the curved holes 1112a, thereby improving the aerosol extraction rate.

[0094] 15 to 18, in one embodiment, the curved hole 1112a has a spiral shape. That is, the three-dimensional shape of the curved hole 1112a has a spatial spiral shape. For example, during the manufacturing process of the monomer 11, the monomer 11 is formed by plastic rotation. A line connecting any point on the spiral curved hole 1112a to the starting point has an inclination angle with respect to its axis. The spiral curved hole 1112a significantly extends the flow path of the airflow, allowing the aerosol to precipitate from within the monomer 11 into the curved hole 1112a, increasing the flow velocity of the aerosol within the monomer 11, thereby increasing the impact force of the airflow and uniformly mixing the aerosol. This improves the uniformity of the aerosol and improves the user's inhalation experience.

[0095] In one embodiment, referring to Fig. 17, the axis of the spiral curved hole 1112a is parallel to the central axis of the monomer 11 in which it is located. In another embodiment, referring to Fig. 16, the axis of the spiral curved hole 1112a overlaps with the central axis of the monomer 11 in which it is located. In this way, the flow volume of the airflow inside the monomer 11 is increased, and the flow velocity of the aerosol airflow and the contact area with the medium are increased, which results in improved heating uniformity of the medium and uniformity of the aerosol emission.

[0096] In one embodiment, the number of pores 111a in a single monomer 11 is 1 to 730. Exemplarily, the number of pores 111a in a single monomer 11 may be 1, 2, 5, 10, 15, 20, 25, 100, 200, 250, 300, 400, 600, or 730. For a given size of the monomer 11, the fewer the number of pores 111a, the thicker the wall between two adjacent pores 111a. The more the number of pores 111a, the larger the specific surface area of ​​the pores 111a, the smaller the flow resistance of the aerosol inside the monomer 11, and the thinner the wall between two adjacent pores 111a. When the number of pores 111a is less than 1, the flow resistance inside the monomer 11 is large, resulting in a large suction resistance, making it difficult to extract the aerosol inside the monomer 11, and reducing the utilization rate of the aerosol. If the number of pores 111a exceeds 730, the wall thickness between two adjacent pores 111a becomes too thin, the medium mass of the unit 11 is low, the aerosol emission time is too short, heat is easily conducted or diffused, burning is likely to occur, and the aerosol emission becomes uneven during the heating process. For example, during the inhalation process, the first two ports are likely to emit a large amount of aerosol and the last few ports are likely to emit a small amount of aerosol, which affects the inhalation sensation of the user.

[0097] In one embodiment, the number of pores 111a in a single unit 11 is 4 to 92. Furthermore, the number of pores 111a in a single unit 11 is 9 to 75. This design ensures sufficient structural strength of the unit 11, stably maintains its overall shape, and balances the aerosol flow resistance, the overall mass of the unit 11, and heating uniformity. It also prevents burning and uneven aerosol emission, improving the user's inhalation experience. Preferably, the number of pores 111a in a single unit 11 is 9 to 60. This ensures an appropriate wall thickness between two adjacent pores 111a, making the unit 11 easier to manufacture, preventing the collapse of the pores 111a during the manufacturing process, and improving product yield.

[0098] 21 and 25, in one embodiment, the airway 11a includes a groove 112a, which is provided on the circumferential surface of the monomer 11. Specifically, the groove 112a has a notch that opens outward. Illustratively, a portion of the circumferential surface of the monomer 11 is recessed to form the groove 112a. That is, the groove 112a is visible on the circumferential surface of the monomer 11. On the one hand, the groove 112a increases the outer surface area of ​​the monomer 11, which can increase the thermal conductivity and make aerosol extraction more advantageous. Illustratively, when the heating method is circumferential heating, the groove 112a can also increase the overall heating rate of the monomer 11 by increasing the heat transfer area. On the other hand, illustratively, since the outer periphery of the monomer 11 is wrapped with the outer packaging layer 30, the outer packaging layer 30 can close the notch of the groove 112a. The outer packaging layer 30 cooperates with the grooves 112a to form holes, which act as a guide to restrict the flow of the aerosol and external air along the length direction, thereby improving the efficiency of aerosol extraction.

[0099] The cross-sectional shape of the groove 112a includes, but is not limited to, a semicircular shape, a polygonal shape, etc. The polygonal shape includes, but is not limited to, a triangular shape, a square shape, a trapezoidal shape, etc.

[0100] 21 and 25, in one embodiment, the groove 112a penetrates both end faces along the length of the monomer 11. In this manner, the outer packaging layer 30 can close the notch of the groove 112a, thereby forming a through hole that penetrates both end faces along the length of the monomer 11.

[0101] In some embodiments, referring to FIGS. 7 to 26 , at least one unit 11 forms multiple airways 11a, and at least some of the airways 11a of a single unit 11 have the same shape. For example, in one embodiment, some of the airways 11a of a single unit 11 have the same shape. Airways 11a of different shapes can provide different resistance to inhalation and aerosol release, so a combination of airways 11a with various shapes can improve the inhalation experience. In another embodiment, all of the airways 11a of a single unit 11 have the same shape. The more shapes of the airways 11a on a single unit 11, the more complex the manufacturing process becomes and the higher the demands on the manufacturing process. Making all of the airways 11a of a single unit 11 the same shape not only reduces manufacturing difficulty and costs, but also allows the resistance to inhalation and aerosol release to be adjusted by adjusting the number and arrangement of the airways 11a.

[0102] 15 to 18, in some embodiments, each unit 11 forms an airway 11a, and at least one of the airways 11a in each unit 11 has a different shape. Because aerosol-generating products require portability for handheld use by users, the size of the units 11 is limited. By using airways 11a with different shapes, the shape of each airway 11a can be flexibly designed even when the size of the unit 11 is limited. This not only facilitates adjusting the aerosol flow resistance, i.e., adjusting the inhalation resistance when the user inhales, but also facilitates adjusting the distribution of the medium mass at different positions on the unit 11, thereby improving the heating speed and heating uniformity, reducing situations such as underheating or burning due to overheating, and allowing the aerosol to be emitted as uniformly as possible.

[0103] 7 to 18, in some embodiments, each monomer 11 forms multiple airways 11a, and the shapes of all the airways 11a of a single monomer 11 are the same, or the shapes of all the airways 11a of each monomer 11 are different. Illustratively, in one embodiment, there are two monomers 11, and the shapes of all the airways 11a of one monomer 11 are straight holes 1111a, and the shapes of all the airways 11a of the other monomer 11 are curved holes 1112a.

[0104] In some embodiments, the number of monomers 11 is 2 to 30. For example, the number of monomers 11 may be 2, 3, 5, 10, 15, 20, 25, 26, 27, or 30. Preferably, the number of monomers 11 is 2 to 20. Because the size of the aerosol-generating substrate 10 is limited, the greater the number of monomers 11, the smaller the size of each monomer 11, making the processing process more complicated, increasing the manufacturing difficulty, and increasing the cost. If the number of monomers 11 exceeds 30, the size of the monomers 11 will be too small, significantly reducing production efficiency and significantly increasing costs. On the other hand, if the number of monomers 11 is 2 to 30, the manufacturing difficulty of the monomers 11 will be relatively low and the product yield will be high.

[0105] The present application will be more clearly illustrated below using several specific examples, and each specific example will be described in detail below.

[0106] 6 and 7, in a first specific embodiment, the aerosol-generating substrate 10 includes one first type monomer 11 and one second type monomer 11, i.e., two monomers 11. The first type monomer 11 and the second type monomer 11 are stacked along the length of the monomer 11. The first type monomer 11 and the second type monomer 11 are made of different materials. The first type monomer 11 and the second type monomer 11 have the same number of airways 11a, the same shape of the airways 11a, the same hydraulic diameter of the airways 11a, the same cross-sectional area of ​​the airways 11a, and the same arrangement of the airways 11a. Specifically, either the first or second type of monomer 11 includes four airways 11a, each of which is a straight hole 1111a. The straight holes 1111a penetrate two longitudinal end faces of the monomer 11, the center line of the straight holes 1111a is parallel to the longitudinal central axis of the monomer 11, and the cross section of the airways 11a is circular. The straight holes 1111a of the first type of monomer 11 and the straight holes 1111a of the second type of monomer 11 are aligned one-to-one and communicate with each other. In this way, the aerosol in the straight holes 1111a of the first type of monomer 11 smoothly flows into the aligned straight holes 1111a of the second type of monomer 11, adjusting and improving the aerosol, and making the aerosol release more uniform and stable. The two monomers 11 are made of different materials, for example, the compositional components and / or their proportions of the monomers 11 are different. In some situations, two entities 11 are heated simultaneously in cooperation with a single heating element, and the aerosol generated by the first entity 11 is reconstituted into smoke by the second entity 11, resulting in a more uniform and rich aroma throughout the aerosol. In other situations, two entities 11 are heated separately in cooperation with multiple independent heating elements, or a single heating element is moved relative to the aerosol-generating substrate 10 to heat the two entities 11 separately, thereby achieving directional and selective release of aerosols with different flavors, avoiding off-flavors or unpleasant tastes caused by repeated heating of a single entity 11, ensuring freshness of the aerosol inhaled with each sip, and improving inhalation consistency.

[0107] 8, in a second specific embodiment, the aerosol-generating substrate 10 includes a third type of monomer 11 and a fourth type of monomer 11, i.e., the number of monomers 11 is two, the third type of monomer 11 and the fourth type of monomer 11 are stacked along the length of the monomer 11, and the third type of monomer 11 and the fourth type of monomer 11 are made of the same material. The third type of monomer 11 includes four airways 11a, which are linear holes 1111a, which penetrate the two end faces of the third type of monomer 11 along the length of the third type of monomer 11, the center lines of the linear holes 1111a are parallel to the central axis of the third type of monomer 11 along the length of the third type of monomer 11, the cross-sectional shape of the linear holes 1111a is rectangular, and the cross-sectional shape and hydraulic diameter of the four linear holes 1111a of the third type of monomer 11 are all the same. The fourth-type unit 11 includes 16 airways 11a, which are straight holes 1111a. The straight holes 1111a penetrate the two longitudinal end faces of the fourth-type unit 11. The center lines of the straight holes 1111a are parallel to the longitudinal central axis of the fourth-type unit 11. The cross-sectional shapes of the straight holes 1111a are circular. All 16 straight holes 1111a of the fourth-type unit 11 have the same cross-sectional shape and hydraulic diameter. Four circular straight holes 1111a of the fourth-type unit 11 are grouped, and the 16 circular straight holes 1111a are divided into four groups, and each group is aligned with and communicates with one square straight hole 1111a. In this way, the third-type unit 11 and the fourth-type unit 11 have different numbers of airways 11a, hydraulic diameters of the airways 11a, cross-sectional areas of the airways 11a, cross-sectional shapes of the airways 11a, and arrangements of the airways 11a. This allows for adjustment of the airflow and the aerosol extraction rate. For example, the third-type unit 11 can be positioned on the far lip side of the fourth-type unit 11. With this design, the airflow from each square linear hole 1111a is divided into four approximately equal streams, and each stream enters one of the four circular linear holes 1111a. Because the flow cross-section of the circular linear holes 1111a is smaller than that of the square linear holes 1111a, the airflow velocity within the circular linear holes 1111a is accelerated due to the Venturi effect, promoting the flow of air within the square linear holes 1111a.The faster the flow rate, the easier it is for the aerosol to precipitate, so more aerosol is precipitated from the unit 11 with the square straight hole 1111a and enters the square straight hole 1111a, increasing the airflow rate, increasing the turbulence of the airflow at the boundary between the two units 11, and the airflow is slowed down and mixed at the boundary between the two units 11, making the aerosol coming out of the unit 11 on the near-lip side more concentrated and stable, and can reduce the temperature of the aerosol coming out of the unit 11 on the near-lip side to a certain extent.

[0108] 9, in a third specific embodiment, the aerosol-generating substrate 10 includes a fifth type of monomer 11 and a sixth type of monomer 11, i.e., the number of monomers 11 is two, the fifth type of monomer 11 and the sixth type of monomer 11 are stacked along the length of the monomers 11, and the fifth type of monomer 11 and the sixth type of monomer 11 are made of the same material. The fifth type of monomer 11 includes one airway 11a, which is a linear hole 1111a that penetrates two end faces along the length of the fifth type of monomer 11, the center line of the linear hole 1111a is parallel to the central axis along the length of the fifth type of monomer 11, and the cross-sectional shape of the linear hole 1111a is circular. The sixth type monomer 11 includes seven airways 11a, which are linear holes 1111a. The linear holes 1111a penetrate the two end faces of the sixth type monomer 11 along the length direction, the center lines of the linear holes 1111a are parallel to the central axis line of the sixth type monomer 11 along the length direction, the cross-sectional shapes of the linear holes 1111a are circular, and the seven linear holes 1111a of the sixth type monomer 11 all have the same cross-sectional shape and hydraulic diameter. Each of the seven circular linear holes 1111a of the sixth type monomer 11 is aligned with and communicates with one circular linear hole 1111a of the fifth type monomer 11. For example, the fifth type monomer 11 can be disposed on the far lip side of the sixth type monomer 11. In this way, the airflow coming out of the straight holes 1111a of the fifth type of element 11 is evenly divided into multiple flows and enters the sixth type of element 11, and the seven circular straight holes 1111a of the sixth type of element 11 can greatly increase the total internal surface area, which is greater than the internal surface area of ​​the fifth type of element 11. The straight holes 1111a of the sixth type of element 11 increase the contact area between the airflow and the medium, improving the deposition and release of the active ingredient, i.e., the aerosol, in the sixth type of element 11, and increasing the airflow speed in the airways 11a of the sixth type of element 11, resulting in a cooling effect.

[0109] 10, in a fourth specific embodiment, the aerosol-generating substrate 10 includes two fifth-type monomers 11 and one sixth-type monomer 11, and the two fifth-type monomers 11 are located on both sides of the sixth-type monomer 11 in the longitudinal direction, i.e., the three monomers 11 are stacked along the longitudinal direction, forming a three-tiered structure. That is, the airflow exiting the linear hole 1111a of the fifth-type monomer 11 on the far-labial side is evenly divided into multiple streams that enter the sixth-type monomer 11 located in the middle, and then are collected at the linear hole 1111a of the fifth-type monomer 11 on the near-labial side. The straight holes 1111a of the three elements 11 in the three-stage structure together form a Venturi airway 11a. During the heating process, when the hot aerosol generated in the fifth element 11 on the far-lip side passes through the sixth element 11, the contact surface area between the aerosol and the straight holes 1111a of the sixth element 11 increases, and the internal energy of the aerosol is conducted to the medium of the sixth element 11, thereby heating the sixth element 11. The straight holes 1111a of the fifth element 11 on the near-lip side can reduce the flow rate of the aerosol, thereby causing a loss of the internal energy of the aerosol within the straight holes 1111a of the sixth element 11 on the near-lip side. This improves the heating uniformity and medium heating efficiency of the entire aerosol-generating substrate 10, and effectively reduces the temperature of the aerosol flowing out of the aerosol-generating substrate 10.

[0110] In a fifth specific embodiment, referring to Figures 11 and 12, the aerosol-generating substrate 10 includes one seventh-type monomer 11 and one eighth-type monomer 11, i.e., two monomers 11, stacked along the length. The seventh-type monomer 11 and the eighth-type monomer 11 have the same number of airways 11a, the same shape of the airways 11a, the same hydraulic diameter, and the same cross-sectional area of ​​the airways 11a. Either the seventh-type monomer 11 or the eighth-type monomer 11 includes four airways 11a, each of which is a linear hole 1111a. The linear holes 1111a of the seventh-type monomer 11 and the eighth-type monomer 11 are aligned one-to-one and communicate with each other. The linear holes 1111a of the seventh-type monomer 11 penetrate the circumferential surface of the seventh-type monomer 11 from the interface between the two. The straight holes 1111a of the eighth type monomer 11 penetrate the circumferential surface of the eighth type monomer 11 from the interface between them. For example, the eighth type monomer 11 is located on the lip-proximal side of the seventh type monomer 11. This increases the contact area between the airflow and the circumferential surface of the monomer 11, increases the airflow rate on the circumferential surface of the monomer 11, reduces heat accumulation in the medium on the circumferential surface of the monomer 11, and ultimately improves the consistency and uniformity of aerosol release during the heating process. On the other hand, the extension paths of the four straight holes 1111a of the seventh type monomer 11 tend to converge in the longitudinal direction, allowing the aerosol generated by the seventh type monomer 11 to converge and collect, thereby preventing the aerosol from diverging during the user's inhalation process and improving the user's inhalation experience. The extension path of the four straight holes 1111a of the eighth type monomer 11 tends to diffuse in the length direction, and such a diffusion configuration can reduce the airflow speed within the seventh type monomer 11, extend the time the airflow remains within the seventh type monomer 11, increase the heating uniformity of the seventh type monomer 11, and make the aerosol uniform and consistent.

[0111] 13, in a sixth specific embodiment, the aerosol-generating substrate 10 includes one ninth type monomer 11 and one tenth type monomer 11, i.e., two monomers 11, stacked along the length. The ninth type monomer 11 and the tenth type monomer 11 have the same number of airways 11a, the same shape of the airways 11a, the same hydraulic diameter, and the same cross-sectional area of ​​the airways 11a. Either the ninth type monomer 11 or the tenth type monomer 11 includes four airways 11a, each of which is a linear hole 1111a. The linear holes 1111a of the ninth type monomer 11 and the linear holes 1111a of the tenth type monomer 11 are aligned one-to-one and communicate with each other. The linear holes 1111a of the ninth type monomer 11 and the tenth type monomer 11 both penetrate the two end faces along the length direction, and the center lines of the linear holes 1111a intersect the central axis of the monomer 11 where it is located. The tenth type monomer 11 is located on the proximal side of the ninth type monomer 11. The arrangement of the airways 11a of the tenth type monomer 11 and the ninth type monomer 11 is different. In the ninth type monomer 11, the distance between the first end of the linear hole 1111a and the central axis of the monomer 11 is smaller than the distance between the second end of the linear hole 1111a and the central axis of the monomer 11. In the tenth type monomer 11, the distance between the first end of the linear hole 1111a and the central axis of the monomer 11 is larger than the distance between the second end of the linear hole 1111a and the central axis of the monomer 11. The extension paths of the four straight holes 1111a of the ninth type of monomer 11 tend to diverge in the longitudinal direction, while the extension paths of the four straight holes 1111a of the tenth type of monomer 11 tend to converge in the longitudinal direction, thereby increasing the airflow volume inside the monomer 11, making the heating and suction process more consistent, and improving the uniformity of the aerosol release.

[0112] 14, in a seventh specific embodiment, the aerosol-generating substrate 10 includes one eighth type monomer 11 and one fifth type monomer 11, and the four linear holes 1111a of the eighth type monomer 11 are all aligned with and communicate with one circular linear hole 1111a of the fifth type monomer 11. The fifth type monomer 11 can be disposed on the distal lip side of the eighth type monomer 11. In this manner, the airflow exiting the linear hole 1111a of the fifth type monomer 11 is evenly divided into multiple flows that enter the linear hole 1111a of the eighth type monomer 11, thereby increasing the specific contact surface area between the linear hole 1111a of the eighth type monomer 11 and the medium, thereby improving the overall utilization rate of the medium. In addition, the extension path of the four straight holes 1111a of the eighth type of monomer 11 tends to diffuse in the length direction, and such a diffusion configuration can reduce the airflow speed within the eighth type of monomer 11, extend the time the airflow stays within the eighth type of monomer 11, increase the heating uniformity, and make the smoke uniform and consistent.

[0113] In an eighth specific embodiment, referring to FIG. 15 , the aerosol-generating substrate 10 includes one first-type monomer 11 and one eleventh-type monomer 11. The eleventh-type monomer 11 includes four airways 11a, each of which has a spiral-shaped curved hole 1112a with a circular cross section. The curved holes 1112a penetrate two end faces of the eleventh-type monomer 11 along its length. The four curved holes 1112a of the eleventh-type monomer 11 and the four straight holes 1111a of the first-type monomer 11 are aligned one-to-one and communicate with each other, and the axis of each curved hole 1112a overlaps with the center line of the corresponding straight hole 1111a. For example, the first-type monomer 11 can be positioned on the far lip side of the eleventh-type monomer 11. This can adjust and improve airflow, resulting in more uniform and stable aerosol release. Furthermore, the curved holes 1112a can increase the internal surface area of ​​the eleventh element 11, allowing heat to enter the medium from the surface, improving heating efficiency compared to structures that directly conduct heat internally. Also, when the aerosol suction volume is constant, the curved holes 1112a extend the airflow path and increase the gas flow speed in the eleventh element 11, thereby increasing the airflow impact force and uniformly mixing the aerosol, thereby improving the aerosol extraction efficiency, improving the aerosol uniformity, and improving the user's inhalation experience.

[0114] 16 , in a ninth specific embodiment, the aerosol-generating substrate 10 includes one first-type monomer 11 and one twelfth-type monomer 11. The difference between the twelfth-type monomer 11 and the eleventh-type monomer 11 is that the curvature of the curved holes 1112a of the twelfth-type monomer 11 is different from that of the curved holes 1112a of the eleventh-type monomer 11, and the axes of the four curved holes 1112a of the twelfth-type monomer 11 all overlap the central axis of the twelfth-type monomer 11. For example, the first-type monomer 11 can be disposed on the distal lip side of the twelfth-type monomer 11. This increases the airflow volume within the monomer 11, improves the consistency of the aerosol-generating substrate 10 during the heating and suction process, and improves the uniformity of the aerosol emission.

[0115] 17 , in a tenth specific embodiment, the aerosol-generating substrate 10 includes one thirteenth type monomer 11 and one tenth type monomer 11. The thirteenth type monomer 11 differs from the twelfth type monomer 11 in that the curvature of the curved holes 1112a of the thirteenth type monomer 11 is different from that of the curved holes 1112a of the twelfth type monomer 11, and the center lines of the four curved holes 1112a of the thirteenth type monomer 11 are all parallel to the central axis of the thirteenth type monomer 11. The four curved holes 1112a of the thirteenth type monomer 11 are aligned one-to-one with and communicate with the four straight holes 1111a of the tenth type monomer 11. For example, the tenth type monomer 11 can be disposed on the distal lip side of the thirteenth type monomer 11. In this way, the curved holes 1112a increase the flow rate of the aerosol airflow and the contact area with the medium, improving heating uniformity and aerosol emission consistency.

[0116] 18, in an eleventh specific embodiment, the aerosol-generating substrate 10 includes one twelfth type monomer 11 and one tenth type monomer 11, and the four curved holes 1112a of the twelfth type monomer 11 are aligned one-to-one with and communicate with the four straight holes 1111a of the tenth type monomer 11. For example, the tenth type monomer 11 can be disposed on the distal lip side of the twelfth type monomer 11. In this way, the spiral curved holes 1112a increase the flow rate of the aerosol airflow and the contact area with the medium, thereby improving the heating uniformity and the aerosol emission uniformity.

[0117] 19 and 20, in a twelfth specific embodiment, the aerosol-generating substrate 10 includes one type 14 monomer 11 and one type 15 monomer 11. The type 14 monomer 11 includes seven linear holes 1111a, one of which is located on the central axis of the type 14 monomer 11, and the remaining six linear holes 1111a are distributed in a circular pattern around the central axis. The cross-sectional shape of the linear holes 1111a is circular, and each linear hole 1111a penetrates two end faces along the length of the type 14 monomer 11. The center line of the linear holes 1111a is parallel to the central axis of the type 14 monomer 11. The type 15 monomer 11 does not have an airway 11a. The type 14 monomer 11 is fitted within the type 15 monomer 11, and a gap 11b is formed between the type 14 monomer 11 and the type 15 monomer 11 in the inward / outward direction. Specifically, the 15th type monomer 11 has a through-hole penetrating both end faces in the length direction, and the 14th type monomer 11 is fitted into the through-hole. In this way, during the heating process, the two monomers 11 each emit aerosol in stages, reducing the impact of the emitting monomer 11 on the un-emitted monomer 11 and thereby improving the consistency and uniformity of the aerosol emission. That is, after one monomer 11 reaches the emission temperature and emits aerosol, the next monomer 11 is heated sequentially. The gap 11b between the monomers 11 corresponds to an insulating wall, which means that the monomers 11 emitting aerosol at each given time are always new.

[0118] In a thirteenth specific embodiment, referring to FIG. 21 , the aerosol-generating substrate 10 includes one type 14 monomer 11 and one type 16 monomer 11. The difference between the type 16 monomer 11 and the type 15 monomer 11 is that the type 16 monomer 11 has a groove 112a. The type 14 monomer 11 is fitted into the type 16 monomer 11, and a gap 11b is formed between the type 14 monomer 11 and the type 16 monomer 11 in the inner and outer directions. Specifically, the type 16 monomer 11 has a through-cavity penetrating both end faces in the length direction, and the type 14 monomer 11 is fitted into the through-cavity. The groove 112a increases the outer surface area, increases thermal conductivity, and promotes extraction of the active ingredient.

[0119] 22 , in a fourteenth specific embodiment, the aerosol-generating substrate 10 includes one 17th type monomer 11 and one 15th type monomer 11. The difference between the 17th type monomer 11 and the 14th type monomer 11 is that the center line of the straight hole 1111a of the 17th type monomer 11 intersects with the central axis of the 15th type monomer 11. The 17th type monomer 11 is fitted into the 15th type monomer 11, and there is a gap 11b between the 17th type monomer 11 and the 15th type monomer 11 in the inner / outer direction. Specifically, the 17th type monomer 11 is fitted into the through cavity of the 15th type monomer 11.

[0120] 25, in a fifteenth specific embodiment, the aerosol-generating substrate 10 includes one 17th type monomer 11 and one 16th type monomer 11. The 17th type monomer 11 is fitted within the 16th type monomer 11, and a gap 11b is formed between the 17th type monomer 11 and the 16th type monomer 11 in the inner / outer direction. Specifically, the 17th type monomer 11 is fitted within a through cavity.

[0121] 26 , in a sixteenth specific embodiment, the aerosol-generating substrate 10 includes four monomers 11 of the type 18, each having a sector-like cross section and joined together along the circumferential direction to form a cylinder. Each monomer 11 includes three linear holes 1111a, each having a circular cross section. Each of the linear holes 1111a penetrates two longitudinal ends of the monomer 11, and the center line of the linear holes 1111a is parallel to the central axis of the monomer 11. The monomers 11 of the type 18 can be combined with a heater to separately heat the monomers 11 in different circumferential regions, thereby achieving directional and selective release of aerosols with different flavors. This avoids the unpleasant taste caused by repeated heating of the medium, ensures that the medium is fresh with each sip, and improves inhalation consistency. The heater may be, for example, a laser heater, in which a laser emitter rotates relative to the aerosol-generating substrate 10 to provide zone heating.

[0122] In the description herein, terms such as "one embodiment," "some embodiments," "some other embodiments," or "exemplary" mean that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In the present application, the use of exemplary terms does not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine different embodiments or examples described herein and features of different embodiments or examples, unless they are mutually inconsistent.

[0123] The above description is merely a preferred embodiment of the present application, and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. 1. An aerosol-forming substrate comprising a plurality of monomers, An aerosol-generating substrate, wherein at least one parameter of at least some of the units is different, the parameter including the material of the unit, the number of airways, the shape of the airways, the hydraulic diameter of the airways, the cross-sectional area of ​​the airways, and the arrangement of the airways, the airways penetrating at least one end along the length of the unit, and the number of airways is a natural number.

2. The plurality of monomers are stacked one by one along the length direction of the monomers.

2. The aerosol-generating substrate of claim 1.

3. Each of the units is provided with the airway, and at least one airway of two adjacent units is aligned and communicates with each other.

3. The aerosol-generating substrate of claim 2.

4. The plurality of units are fitted together one by one along the inner and outer direction.

2. The aerosol-generating substrate of claim 1.

5. a gap is provided between two adjacent monomers in the inward and outward direction; 5. The aerosol-generating substrate of claim 4.

6. The plurality of units are joined one by one along the circumferential direction.

2. The aerosol-generating substrate of claim 1.

7. The air passage includes a pore, and the pore is provided inside the monolith.

2. The aerosol-generating substrate of claim 1.

8. The pores penetrate two end faces along the length of the monolith.

8. The aerosol-generating substrate of claim 7.

9. the pores extend through one end face along the length of the monomer and through the circumferential surface of the monomer; 8. The aerosol-generating substrate of claim 7.

10. The pores are linear pores extending along a straight line.

8. The aerosol-generating substrate of claim 7.

11. The center line of the linear hole intersects with the center axis along the length of the monomer.

11. The aerosol-generating substrate of claim 10.

12. the number of the linear holes on the single unit is plural, and the distance between a first end of the linear hole on the single unit and the central axis of the unit is greater than the distance between a second end of the linear hole and the central axis of the unit; 12. The aerosol-generating substrate of claim 11.

13. The center line of the linear hole is parallel to the center axis along the length of the monolith.

11. The aerosol-generating substrate of claim 10.

14. The pores are curved pores, and at least a portion of the pore sections of the curved pores has a curved shape with a curvature that is not 0.

8. The aerosol-generating substrate of claim 7.

15. The curved hole has a spiral shape.

15. The aerosol-generating substrate of claim 14.

16. The number of pores in the single unit is 1 to 730.

8. The aerosol-generating substrate of claim 7.

17. the airway includes a groove in a circumferential surface of the monolith; 2. The aerosol-generating substrate of claim 1.

18. At least one of the units forms a plurality of the airways, and at least some of the airways of a single unit have the same shape.

2. The aerosol-generating substrate of claim 1.

19. Each of the units forms an airway, and the shape of at least one airway of each of the units is different.

2. The aerosol-generating substrate of claim 1.

20. The number of the monomers is 2 to 30.

2. The aerosol-generating substrate of claim 1.

21. 1. An aerosol-generating product comprising: An aerosol-forming substrate according to any one of claims 1 to 20; a functional step portion provided at one end along the length of the aerosol-generating substrate and including at least a filtering step portion for filtering the aerosol; an outer packaging layer surrounding the outer periphery of the functional step and the outer periphery of the aerosol-generating substrate.

22. the functional stage further includes a cooling stage located between the filtering stage and the aerosol-generating substrate; 22. The aerosol-generating product of claim 21.

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