Aerosol generating medium and aerosol generating product

Abstract

Embodiments of this application provide an aerosol generating substrate and an aerosol generating article. The aerosol generating substrate includes an aerosol substrate and a heating element, the aerosol substrate is provided with channels, and the channel extends through at least one end of the aerosol substrate along the length direction; and the heating element is arranged in the aerosol substrate and configured to heat the aerosol substrate. In the aerosol generating substrate of the embodiments of this application, because the heating element is arranged in the aerosol substrate, after the aerosol generating article is inserted into a heating chamber, an aerosol generating device has no structure inserted into the aerosol substrate, and only an electric energy output portion needs to transmit electric energy to the heating element. In this way, when the aerosol generating substrate is separated from the aerosol generating device after finishing heating, solid powder particles generated after the aerosol substrate is heated are not easy to fall into the heating chamber and contaminate the heating chamber. This can reduce a cleaning workload of a user.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese Patent Application No. 202310140309.X, filed on February 20, 2023, which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] This application relates to the field of aerosol-generating product technologies, and in particular, to an aerosol generating substrate and an aerosol generating article.BACKGROUND

[0003] Aerosol-generating products include an aerosol-generating product in which aerosols are formed by ignition, and an aerosol-generating product in which aerosols are formed in a heat-not-burn manner. In a typical heat-not-burn tobacco product, an aerosol generating substrate that includes a tobacco raw material, a flavor raw material, and / or an aerosol former, and the like may volatilize when being heated to generate aerosols. An external heat source is used to heat the aerosol generating substrate just enough to emit. The aerosol generating substrate may not burn, and by adding an aerosol former, when in use, the aerosol generating substrate releases the aerosol former through high temperature heating to form aerosols.

[0004] In some related technologies, a heating element is arranged in a heating chamber of an aerosol generating device, and during inhaling, the aerosol-generating product is inserted into the heating chamber of the aerosol generating device. In addition, the heating element in the heating chamber is inserted into the aerosol-generating product, to heat the aerosol-generating product from the inside to the outside. When the aerosol-generating product is separated from the heating element after finishing heating, the two objects move relative to each other, easily causing solid particles such as residuals adhered to the heating element to fall into the aerosol generating device, and a user needs to periodically clean the heating chamber. This not only increases a workload of the user, but also may cause damage to the heating element if the cleaning is improper.SUMMARY

[0005] In view of this, embodiments of this application expect to provide an aerosol generating substrate and an aerosol generating article, so that solid particles obtained when an aerosol substrate is heated are not easy to fall into a heating chamber and contaminate the heating chamber, thereby reducing a cleaning workload of a user.

[0006] An embodiment of this application provides an aerosol generating substrate, including: an aerosol substrate, where the aerosol substrate is provided with channels, and the channel extends through at least one end of the aerosol substrate along the length direction; and a heating element, arranged in the aerosol substrate and configured to heat the aerosol substrate.

[0007] In some implementations, the heating element is connected to the aerosol substrate.

[0008] In some implementations, there is one heating element extending along the length direction of the aerosol substrate, and the heating element is arranged on a central axis of the aerosol substrate.

[0009] In some implementations, the heating element is provided with at least an electromagnetic induction portion, configured to generate heat by inducting a change of an external magnetic field.

[0010] In some implementations, the heating element includes a conductive heating portion and a contact portion electrically connected to the electric heating portion, and the contact portion is configured to be in contact with an external power supply terminal, for the conductive heating portion to be electrified to generate heat.

[0011] In some implementations, the aerosol substrate is a particulate aggregate, micro-pores are formed between particles of the particulate aggregate, a plurality of the micro-pores communicate with each other and form a micro-airway that communicates with the channel, and the cross-sectional area of the channel is at least 20 times the cross-sectional area of the micro-pore.

[0012] In some implementations, the aerosol substrate is provided with a prefabricated hole, the prefabricated hole extends through at least one end of the aerosol substrate along the length direction, and the heating element is arranged in the prefabricated hole.

[0013] In some implementations, the heating element is in a sheet shape, the channels include a plurality of airway holes, the airway holes are arranged inside the aerosol substrate, and in a plane perpendicular to the length direction of the aerosol substrate, the airway holes are symmetrically distributed about the heating element.

[0014] In some implementations, the heating element is in a column shape, the channels include a plurality of airway holes, the airway holes are arranged inside the aerosol substrate, and in a plane perpendicular to the length direction of the aerosol substrate, the channels exhibit origin symmetry about the heating element.

[0015] In some implementations, the airway holes are arranged in a circular shape and use the heating element as the center; or the airway holes are arranged in a matrix.

[0016] In some implementations, the aerosol substrate completely wraps the heating element.

[0017] In some implementations, a blind channel is arranged inside the aerosol substrate, and at least one end of the blind channel along the length direction is closed.

[0018] In some implementations, the heating element is in a disc shape, and a disc plane of the disc-shaped heating element is not parallel to the length direction of the aerosol substrate.

[0019] In some implementations, in a plane perpendicular to the length direction of the aerosol substrate, at least one of the airway holes is located in a projection range of the heating element, a through-hole is arranged at a part of the heating element corresponding to the airway hole, and the through-hole is located in an airflow flowing path of the airway hole.

[0020] In some implementations, the channels include a plurality of airway holes, the airway holes are arranged inside the aerosol substrate, all of the airway holes are distributed on a plurality of trajectory lines, each of the airway holes on a single trajectory line is linearly arranged along a first direction, the plurality of trajectory lines are arranged along a second direction, and the first direction is not parallel to the second direction.

[0021] In some implementations, each of the airway holes on the single trajectory line is arranged along a peripheral direction around the center of the aerosol substrate, and the plurality of trajectory lines are arranged along the radial direction of the aerosol substrate.

[0022] In some implementations, pore sizes of the airway holes on each trajectory line gradually increase along the radially outward direction.

[0023] In some implementations, the aerosol generating substrate is in an integrated structure.

[0024] An embodiment of this application provides an aerosol generating article, including: the aerosol generating substrate according to any embodiment of this application; a function segment, arranged at one end of the aerosol generating substrate along the length direction, and including at least a filter segment used for filtering out aerosols; and an outer wrapping layer, circumferentially wrapping the function segment and the aerosol generating substrate on the outside.

[0025] In the aerosol generating substrate of the embodiments of this application, because the heating element is arranged in the aerosol substrate, after the aerosol generating article is inserted into a heating chamber, an aerosol generating device has no structure inserted into the aerosol substrate, and only an electric energy output portion needs to transmit electric energy to the heating element. In this way, when the aerosol generating substrate is separated from the aerosol generating device after finishing heating, solid powder particles generated after the aerosol substrate is heated are not easy to fall into the heating chamber and contaminate the heating chamber. This can reduce a cleaning workload of a user.BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG. 1 is a schematic diagram of an aerosol generating article inserted into an aerosol generating device according to an embodiment of this application; FIG. 2 is a cross-sectional view of a structure shown in FIG. 1; FIG. 3 is a schematic diagram of an aerosol generating article according to an embodiment of this application; FIG. 4 is a cross-sectional view of a structure shown in FIG. 3; FIG. 5 is a schematic diagram of an aerosol generating article according to another embodiment of this application; FIG. 6 is a schematic diagram of an aerosol generating substrate according to a first embodiment of this application; FIG. 7 is a cross-sectional view of a structure shown in FIG. 6; FIG. 8 is a schematic diagram of an aerosol generating substrate according to a second embodiment of this application; FIG. 9 is a cross-sectional view of a structure shown in FIG. 8; FIG. 10 is a schematic diagram of an aerosol generating substrate according to a third embodiment of this application; FIG. 11 is a schematic diagram of an aerosol generating substrate according to a fourth embodiment of this application; FIG. 12 is a schematic diagram of an aerosol generating substrate according to a fifth embodiment of this application; FIG. 13 is a schematic diagram of an aerosol generating substrate according to a sixth embodiment of this application; FIG. 14 is a cross-sectional view of a structure shown in FIG. 13; FIG. 15 is a schematic diagram of an aerosol generating substrate according to a seventh embodiment of this application; FIG. 16 is a schematic diagram of an aerosol generating substrate according to an eighth embodiment of this application; FIG. 17 is a schematic diagram of an aerosol generating substrate according to a ninth embodiment of this application; FIG. 18 is a schematic diagram of an aerosol generating substrate according to a tenth embodiment of this application; FIG. 19 is a schematic diagram of an aerosol generating substrate according to an eleventh embodiment of this application; FIG. 20 is a cross-sectional view of a structure shown in FIG. 19; FIG. 21 is a schematic diagram of an aerosol generating substrate according to a twelfth embodiment of this application; FIG. 22 is a schematic diagram of an aerosol generating substrate according to a thirteenth embodiment of this application; FIG. 23 is a schematic diagram of an aerosol generating substrate according to a fourteenth embodiment of this application; FIG. 24 is a schematic diagram of an aerosol generating substrate according to a fifteenth embodiment of this application; FIG. 25 is a cross-sectional view of a structure shown in FIG. 24; FIG. 26 is a schematic exploded view of a structure shown in FIG. 24; FIG. 27 is a schematic diagram of an aerosol generating substrate according to a sixteenth embodiment of this application; FIG. 28 is a schematic diagram of an aerosol generating substrate according to a seventeenth embodiment of this application; FIG. 29 is a cross-sectional view of a structure shown in FIG. 28; FIG. 30 is a schematic diagram of an aerosol generating substrate according to an eighteenth embodiment of this application; and FIG. 31 is a schematic diagram of an aerosol generating substrate according to a nineteenth embodiment of this application. DETAILED DESCRIPTION

[0027] The following further describes implementations of this application in detail with reference to the accompanying drawings and the embodiments. The following embodiments are used to describe this application, but shall not be used to limit the scope of this application.

[0028] In the descriptions of the embodiments of this application, terms "first", "second" and "third" are used only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0029] Embodiments of this application provide an aerosol generating substrate 10. Referring to FIG. 4, FIG. 5, FIG. 7, FIG. 9, FIG. 14, FIG. 17, FIG. 18, FIG. 20, FIG. 21, FIG. 25, FIG. 29, and FIG. 26, the aerosol generating substrate 10 includes an aerosol substrate 11 and a heating element 12.

[0030] The aerosol substrate 11 is configured to generate aerosols when being heated, for inhalation of a user. In the embodiments of this application, the aerosol generating substrate 10 is approximately in a column shape. The column shape may be a cylindrical shape (that is, a cross-sectional shape is circular), a prismatic shape (that is, a cross-sectional shape is polygonal), an elliptic cylindrical shape (that is, a cross-sectional shape is elliptic), or the like. This is not limited herein.

[0031] The aerosol substrate 11 is provided with channels, and the channel extends through at least one end of the aerosol substrate 11 along the length direction. That is, the channel extends along the longitudinal direction of the aerosol substrate 11.

[0032] In some embodiments, referring to FIG. 30, the channels extend through a same end of the aerosol substrate 11 along the length direction.

[0033] In some other embodiments, referring to FIG. 31, some channels extend through one end of the aerosol substrate 11 along the length direction, and other channels extend through the other end of the aerosol substrate 11 along the length direction.

[0034] In some embodiments, referring to FIG. 7, FIG. 9, FIG. 14, FIG. 20 to FIG. 22, FIG. 25, and FIG. 29, each channel extends through two ends of the aerosol substrate 11 along the length direction, and an airflow may flow from one end of the aerosol substrate 11 along the length direction to the other end of the aerosol substrate 11 along the length direction through an airway hole 10a.

[0035] In the embodiments of this application, the length direction of the aerosol substrate 11 is the same as the length direction of the aerosol generating substrate 10.

[0036] For example, the aerosol substrate 11 is a particulate aggregate, and is a reconstituted tobacco substrate, for example, a reconstituted tobacco substrate including components such as an aerosol-generating agent, tobacco, and the like. The aerosol substrate 11 is in an integrated structure, for example, an integrated structure that may be prepared through injection molding, compression molding, or extrusion molding. Extrusion molding refers to a processing method in which a raw material mixture is added to an extruder, and the material is heated and plasticized through interaction between a barrel and a rod of the extruder, and is pushed forward by the rod, to continuously pass through a mould at a discharge outlet of the extruder, thereby forming products or semi-products of various cross sections. An aerosol substrate formed through extrusion molding is in the form of a strip.

[0037] Because the aerosol substrate 11 is a particulate aggregate, and is an integral substrate after being heated for inhaling or stopped from heating, the aerosol substrate 11 is not easy to disintegrate and fall. This resolves prior-art problems in which a flake, filamentary, or granular particulate aerosol generating substrate appears, such as flake loosening, filamentary components and particulate components falling off, to be difficult to clean, and compositions are uneven.

[0038] Micro-pores are formed between particles of the particulate aggregate, that is, gaps between the particles form micro-pores, and the micro-pores communicate with each other and form a micro-airway that communicates with the channel.

[0039] The micro-airway may enlarge a surface area of the aerosol substrate 11, and this facilitates transfer of heat from a surface of the micro-airway to the inside of the substrate, thereby improving heating efficiency. The substrate of the aerosol substrate 11 is heated to release aerosols, the aerosols are collected into the channel through the micro-airway and transported to an inhale end under an inhale negative pressure. The channel can reduce inhaling resistance of the user during inhaling and improve user experience.

[0040] The heating element 12 is arranged in the aerosol substrate 11 and configured to heat the aerosol substrate 11.

[0041] That is, the heating element 12 and the aerosol substrate 11 form an entity together.

[0042] Embodiments of this application further provide an aerosol generating article 100. With reference to FIG. 3, FIG. 4, and FIG. 5, the aerosol generating article 100 includes a function segment 30, an outer wrapping layer 20, and an aerosol generating substrate 10 according to any embodiment of this application.

[0043] The aerosol generating article 100 generates aerosols by using the aerosol substrate 11, and the function segment 30 is not used for generating aerosols.

[0044] It is to be noted that, in this embodiment of this application, the aerosol generating article 100 may be applied for inhaling in a heat-burn manner, or may be applied for inhaling in a heat-not-burn manner.

[0045] In this embodiment of this application, an example in which the aerosol generating article 100 is applied for inhaling in a heat-not-burn manner is used for description.

[0046] The function segment 30 is arranged at one end of the aerosol generating substrate 10 along the length direction. The function segment 30 includes at least a filter segment 31 used for filtering out aerosols. The filter segment 31 may also be referred to as a filter. The user inhales filtered aerosols by using the filter segment 31 of the function segment 30.

[0047] The aerosol generating article 100 is configured to cooperate with an aerosol generating device 200 for use.

[0048] For example, referring to FIG. 1 and FIG. 2, the aerosol generating device 200 includes a housing 201 and a power supply component arranged in the housing 201, the housing 201 is provided with a heating chamber 200a, and the power supply component is provided with an electric energy output portion. When a part of the aerosol generating article 100 corresponding to a length range of the aerosol substrate 11 is inserted into the heating chamber 200a, the electric energy output portion provides electric energy to the heating element 12 in a contact or non-contact manner. The heating element 12 receives the electric energy from the external to generate heat, to heat and atomize the aerosol substrate 11 for generating aerosols.

[0049] In the aerosol generating substrate 10 of this embodiment of this application, because the heating element 12 is arranged in the aerosol substrate 11, after the aerosol generating article 100 is inserted into the heating chamber 200a, the aerosol generating device 200 has no structure or element inserted into the aerosol substrate 11, and only the electric energy output portion needs to provide electric energy to the heating element 12. In this way, when the aerosol generating substrate 10 is separated from the aerosol generating device 200 after finishing heating, avoiding solid or semi-solid powder particles generated after the aerosol substrate 11 is heated from falling into the heating chamber 200a and contaminating the heating chamber 200a. This can reduce a cleaning workload of the user.

[0050] In this embodiment of this application, the length direction does not particularly refer to a direction in which an appearance contour of the aerosol generating substrate 10 is the longest. Specifically, the arrangement direction and the length direction of the function segment 30 are the same as those of the aerosol generating substrate 10. Both a direction in which the aerosol generating article 100 is inserted into the heating chamber 200a and a direction in which the aerosol generating article 100 is removed from the heating chamber 200a are parallel to the length direction. A length of the aerosol generating substrate 10 along the length direction may be longer or shorter than, or the same as, a length in another direction.

[0051] For example, when the appearance contour of the aerosol generating substrate 10 is in a cylindrical shape, the length direction is the axial direction of the aerosol generating substrate 10, and it is to be noted that, even if the axial length of the aerosol generating substrate 10 is less than the diameter of the aerosol generating substrate 10, the length direction of the aerosol generating substrate 10 is still the axial direction. For another example, when the appearance contour of the aerosol generating substrate 10 is a cuboid, the length direction is still the direction defined above, that is, the arrangement directions of the function segment 30 and the aerosol generating substrate 10, or the direction in which the aerosol generating article 100 is removed from or inserted into the heating chamber 200a. The length direction of the aerosol generating substrate 10 may be any direction of the length, the width, and the height of the cuboid.

[0052] When the aerosol generating substrate 10 is used alone, that is, not combined with the function segment 30, the length direction is the vertical direction of a distance between two ends of the aerosol generating substrate 10. For example, when the aerosol generating substrate 10 is a cylinder, the length direction is the vertical direction of a distance between two end surfaces. For example, when the aerosol generating substrate 10 is in a column shape whose cross section is in a shape such as a triangle, a polygon, an oblong circle, or an ellipse, the length direction is the axial direction, and when the aerosol generating substrate 10 is in a cuboid shape, the length direction of the aerosol generating substrate 10 may be any direction of the length, the width, and the height of the cuboid.

[0053] It is to be noted that, in some embodiments, the heating element 12 may be in direct contact with and be connected to the aerosol substrate 11. In this way, the heating element 12 can directly transfer heat to the aerosol substrate 11, thereby improving heat transfer efficiency; and in some other embodiments, the heating element 12 is not in direct contact with the aerosol substrate 11, a heat transfer element is arranged between the heating element 12 and the aerosol substrate 11, heat of the heating element 12 is transferred to the aerosol substrate 11 by using the heat transfer element, and the heating element 12 and the aerosol substrate 11 are connected by using the heat transfer element.

[0054] An outer wrapping layer 20 circumferentially wraps the function segment 30 and the aerosol generating substrate 10 on the outside.

[0055] A material of the outer wrapping layer 20 is not limited, and for example, includes, but is not limited to, one or a combination of materials such as fiber paper, metal foil, metal foil composite fiber paper, polyethylene composite fiber paper, PE, and PBAT.

[0056] In some embodiments, the function segment 30 includes only the filter segment 31. In some other embodiments, in addition to the filter segment 31, the function segment 30 further includes a supporting segment and / or a cooling segment 32. The supporting segment and / or the cooling segment 32 is arranged between the aerosol substrate 11 and the filter segment 31.

[0057] The cooling segment 32 is configured to perform cooling processing on aerosols before the filter segment 31 filters the aerosols, to reduce the temperature of the aerosols, and reduce a phenomenon of "hot nozzle" when the user inhales the aerosols.

[0058] A material of the cooling segment 32 includes, but is not limited to, one or a combination of the following: PE (polyethylene, polyethylene), PLA (Polylactic acid, polylactic acid, also referred to as polylactide), PBAT (butyleneadipate-co-terephthalate, butyleneadipate-co-terephthalate), PP (Polypropylene, polypropylene), acetate fiber, and propylene fiber material.

[0059] A material of the filter segment 31 includes, but is not limited to, one or a combination of the following: PE (polyethylene, polyethylene), PLA (Polylactic acid, polylactic acid, also referred to as polylactide), PBAT (butyleneadipate-co-terephthalate, butyleneadipate-co-terephthalate), PP (Polypropylene, polypropylene), acetate fiber, and propylene fiber material.

[0060] The materials of the cooling segment 32 and the filter segment 31 may be the same or different.

[0061] The supporting segment has a specific structural strength, and plays an axial limiting role on the aerosol generating substrate 10. Specifically, when the aerosol generating article 100 is inserted into the heating chamber 200a in the aerosol generating device 200, the supporting segment provides a reaction force to the aerosol generating substrate 10, to prevent the aerosol generating substrate 10 from moving along the axial direction.

[0062] A specific component of the aerosol substrate 11 is not limited herein. For example, in an embodiment, the aerosol substrate 11 may include a plant component, an additive component, an aerosol-generating agent component, an adhesive component, and the like.

[0063] In an embodiment, the plant component is one or a combination of powders formed by crushing tobacco raw materials, tobacco fragments, tobacco stems, tobacco powder, fragrant plants, and the like. The plant component is used for generating, when being heated, aerosols including substances such as nicotine.

[0064] In an embodiment, the additive component may be one or a combination of the following: inorganic filler, lubricating agent, and emulgator. The inorganic filler includes one or a combination of the following: heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talcum powder, and diatomite. The inorganic filler may provide skeleton support for the plant component. In addition, the inorganic filler has micro-pores that may improve a porosity of wall materials after the plant component is molded, thereby improving an aerosol release rate.

[0065] The lubricating agent includes one or a combination of the following: candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricating agent may increase fluidity of particles, reduce friction between particles, make an overall density of particle distribution more even, reduce a pressure required for mould forming, and reduce wear of the mould.

[0066] The emulgator includes one or a combination of the following: glycerol fatty acid ester, Tween-80, and polyvinyl alcohol. The emulgator can relieve loss of a fragrant material during storage to some extent, increase stability of the fragrant material, and improve sensory quality of a product.

[0067] A function of the aerosol-generating agent component is to generate a large quantity of steams when being heated, to improve a quantity of aerosols of the aerosol substrate. In an embodiment, the aerosol-generating agent, for example, may include: monohydric alcohol (such as menthol); polyol, such as propylene glycol, triethylene glycol, 1,3-butanediol, and glycerol; ester of polyol (such as glycerol monoacetate, diacetin, or glycerol triacetate); monocarboxylic acid; and one or a combination of the following: polycarboxylic acid (such as lauric acid and myristic acid) or aliphatic ester of polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3- butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin (Triactin), meso-erythritol, glyceryl diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, glycerin tributyrate, and lauryl acetate).

[0068] In an embodiment, the adhesive component is a non-ionically modified viscous polysaccharide derived from natural plant extracts, including one or a combination of the following: tamarind polysaccharide, pullulan, algal polysaccharide, locust bean gum, guar gum, and xyloglucan. The adhesive component is used for sticking particles together, and is not easy to be loosened. In addition, the adhesive component improves water resistance of the aerosol generating substrate, is not harmful to the human body, and has a health care effect.

[0069] It is to be noted that, the channel is a pore in a macro sense, the micro-pore is a pore in a micro sense, and a cross-sectional area of the channels is much larger than a cross-sectional area of the micro-pore. The dimension of the micro-pore is determined by gaps between particles.

[0070] For example, the cross-sectional area of the channel is at least 20 times the cross-sectional area of the micro-pore. When the dimension of the micro-pore is approximately unchanged, and is less than 20 times, the dimension of the channel is excessively small. Consequently, the aerosol is not easily released from the inner wall of the channel to the channel, inhaling resistance of the user is high, and inhaling experience of the user is reduced. Therefore, in this embodiment, when the cross-sectional area of the channel is greater than or equal to 20 times the cross-sectional area of the micro-pore, a rate of releasing of the aerosol from the inner wall of the channel can be ensured, and inhaling resistance can also be reduced, thereby improving the inhaling experience of the user.

[0071] In some embodiments, the cross-sectional area of the channel is 20 times to 60000 times the cross-sectional area of the micro-pore. If the cross-sectional area of the channel exceeds 60000 times the cross-sectional area of the micro-pore, the area of the channel is excessively large, overall quality of an aerosol-generating substrate decreases, a utilization rate of the substrate is low, a heating rate is high, and the aerosol is easily released into the environment from the micro-pore.

[0072] For example, the cross-sectional area of the channel is 100 times to 40000 times the cross-sectional area of the micro-pore.

[0073] A specific structure of the heating element 12 is not limited.

[0074] For example, in some embodiments, the heating element 12 is provided with at least an electromagnetic induction portion, configured to generate heat by sensing a change of an external magnetic field. In this embodiment, the electric energy output portion includes an inductance coil. When alternating current is applied to the inductance coil, an alternating magnetic field may be generated, and the electromagnetic induction portion is located in the alternating magnetic field and cut alternating magnetic field lines, so that a vortex flow is generated in the electromagnetic induction portion. The vortex flow causes current carriers of the electromagnetic induction portion to move at high speed and randomly, and the current carriers collide and rub with atoms to generate heat energy. This causes the heating element 12 to heat up, thereby heating the aerosol substrate 11. In this embodiment, the electric energy output portion and the heating element 12 transmit electric energy in a non-contact manner.

[0075] A specific material of the electromagnetic induction portion is not limited. For example, the electromagnetic induction portion may be made of metal, conductive ceramics, or another material.

[0076] It is to be noted that, an arrangement manner of the inductance coil is not limited. The inductance coil may be arranged on a peripheral side wall of the heating chamber 200a, or may be arranged on a bottom wall of the heating chamber 200a. This is not limited herein.

[0077] In the foregoing embodiment, the structure of the heating element 12 is not limited. For example, in some embodiments, the entire heating element 12 is made of a metal material or conductive ceramics, that is, the entire heating element 12 is the electromagnetic induction portion. In some other embodiments, the heating element 12 includes an insulation base and the foregoing electromagnetic induction portion. The electromagnetic induction portion may be in a layered form and is arranged on a surface of the insulation base.

[0078] In some other embodiments, the heating element 12 includes a conductive heating portion and a contact portion electrically connected to the electric heating portion, and the contact portion is configured to be in contact with an external power supply terminal, for the conductive heating portion to be electrified to generate heat. In this embodiment, the electric energy output portion includes two positive power supply terminals and two negative power supply terminals, and the contact portion includes a positive contact and a negative contact. When the aerosol generating article 100 is inserted into the heating chamber 200a, the positive contact is in contact with the positive power supply terminal, and the negative contact is in contact with the negative power supply terminal. In this way, the electric heating portion may be connected to a circuit. When the positive power supply terminal and the negative power supply terminal are electrified, the electric heating portion is electrified to implement resistive heating, thereby heating the aerosol substrate 11. In this embodiment, the electric energy output portion and the heating element 12 transmit electric energy in a contact manner.

[0079] A specific material of the electric heating portion is not limited. For example, the electric heating portion may be made of metal, conductive ceramics, or another material.

[0080] In the foregoing embodiment, the structure of the heating element 12 is not limited. For example, in some embodiments, the entire heating element 12 is made of a metal material or conductive ceramics. In some other embodiments, the heating element 12 further includes an insulating base, and the electric heating portion is arranged in the insulating base.

[0081] There may be one or more heating elements 12. In this embodiment of this application, an example in which there is one heating element 12 is used for description.

[0082] For example, there is one heating element 12, and the heating element 12 extends along the length direction of the aerosol substrate 11. That is, a dimension of the heating element 12 in the length direction of the aerosol substrate 11 is far greater than that in a direction perpendicular to the length direction of the aerosol substrate 11.

[0083] A production process of combining the heating element 12 and the aerosol substrate 11 is not limited.

[0084] For example, the heating element 12 may be embedded in the aerosol substrate 11 after the aerosol substrate 11 is formed. For another example, the heating element 12 may alternatively be directly formed into an integral body with the aerosol substrate 11 by using a process such as die-cast formation. Specifically, the heating element 12 is placed in a mould, a mixture for preparing the aerosol substrate 11 is placed in the mould, and then die casting is performed. After the mould is opened, the heating element 12 and the aerosol substrate 11 are combined into a whole.

[0085] In some embodiments, referring to FIG. 3, FIG. 6, FIG. 10, FIG. 11, FIG. 12, and FIG. 15 to FIG. 27, the aerosol substrate 11 is provided with a prefabricated hole 10c, the prefabricated hole 10c extends through at least one end of the aerosol substrate 11 along the length direction, and the heating element 12 is arranged in the prefabricated hole 10c. In this embodiment, the heating element 12 is embedded in the aerosol substrate 11 after the aerosol substrate 11 is formed. Specifically, the prefabricated hole 10c is processed during preparation of the aerosol substrate 11. After the aerosol substrate 11 is formed, the heating element 12 is inserted into the prefabricated hole 10c. In this embodiment, because the prefabricated hole 10c is provided, when the heating element 12 is inserted into the prefabricated hole 10c, the heating element 12 does not compress a structure around the prefabricated hole 10c less frequently or at all, so that the aerosol substrate 11 keeps a relatively even density.

[0086] It is to be noted that, in some other embodiments, the aerosol substrate 11 may not be provided with a prefabricated hole 10c, and the heating element 12 is directly attacked into the aerosol substrate 11 after the aerosol substrate 11 is formed.

[0087] An arrangement position of the heating element 12 in the plane perpendicular to the length direction of the aerosol substrate 11 is not limited.

[0088] For example, the heating element 12 is arranged on the central axis of the aerosol substrate 11. The central axis is a virtual base line used as a reference, and in the plane perpendicular to the length direction of the aerosol substrate 11, the central axis is located at the center of a cross section of the aerosol substrate 11. In this embodiment, heat of the heating element 12 is distributed in a radiated manner, and entire heating is relatively uniform in a peripheral direction around the heating element 12, so that the aerosol substrate 11 stably and uniformly releases aerosols.

[0089] In some other embodiments, the heating element 12 may alternatively be arranged eccentrically relative to the central axis. That is, the heating element 12 may not be arranged on the central axis.

[0090] A specific shape of the heating element 12 is not limited.

[0091] For example, the heating element 12 is in a sheet shape, and extends along the length direction of the aerosol substrate 11.

[0092] A cross-sectional shape of the sheet-shaped heating element 12 is not limited, for example, a V-shape, a straight line shape, an arc shape, or the like.

[0093] In some other embodiments, the heating element 12 is in a column shape, and extends along the length direction of the aerosol substrate 11.

[0094] A cross-sectional shape of the column-shaped heating element 12 is not limited, for example, a circular shape, an elliptical shape, a polygonal shape, or the like.

[0095] In some embodiments, a part of the heating element 12 is exposed on an external surface of the aerosol substrate 11, for example, one or two ends of the heating element 12 are flush with or protrude from an end surface of the aerosol substrate 11. In some other embodiments, the aerosol substrate 11 completely wraps the heating element 12 on the outside, that is, no part of the heating element 12 is exposed on the external surface of the aerosol substrate 11. In this way, a contact area between the heating element 12 and the aerosol substrate 11 is large, thereby improving heating efficiency.

[0096] For example, referring to FIG. 22, a blind channel 10d is arranged inside the aerosol substrate 11, and at least one end of the blind channel 10d along the length direction is closed. In some embodiments, only one end of the blind channel 10d is closed, and the other end is formed with an opening on the external surface of the aerosol substrate 11. In some other embodiments, referring to FIG. 22, two ends of the blind channel 10d are closed ends. In a preparation process, a part of the aerosol substrate 11 may be first prepared, and after the blind channel 10d is formed, the rest of the aerosol substrate 11 is prepared. In this way, the blind channel 10d with two ends closed may be formed.

[0097] In this embodiment, in a process in which the user inhales at intervals, the blind channel 10d may increase an internal temperature of the aerosol substrate 11 when the user does not inhale, reduce power output of the aerosol generating device 200, and prolong a single endurance time of the aerosol generating device 200. In addition, overall heating uniformity of the aerosol substrate 11 may be improved, and consistency of aerosol release is improved.

[0098] It is to be noted that, a quantity of channels is not limited, and there may be one or more channels.

[0099] For example, in some embodiments, the channel includes an airway hole 10a, and the airway hole 10a is arranged inside the aerosol generating substrate 10. That is, at least some of the channels are used as the airway holes 10a. In a cross section perpendicular to the length direction of the aerosol generating substrate 10, hole walls of the airway holes 10a are connected head to tail to form a closed hole. The airway hole 10a helps to improve heating uniformity of the substrate inside.

[0100] For example, referring to FIG. 8, FIG. 11, FIG. 12, and FIG. 20, the channel includes an airway groove 10b, and the airway groove 10b is arranged on a peripheral surface of the aerosol substrate 11. That is, a part of the region of the outer side wall of the aerosol substrate 11 is recessed to form the airway groove 10b, meaning that the groove-shaped airway groove 10b is visible on the outer sidewall of the aerosol substrate 11.

[0101] It is to be noted that, the outer wrapping layer 20 may close the airway groove 10b on the outer side wall of the aerosol generating substrate 10, so that the airway groove 10b may also serve as an airflow channel of the aerosol. In this way, an ingress amount of air and extraction efficiency of the aerosol may be increased.

[0102] In some embodiments, all of the channels are the airway grooves 10b, that is, in this embodiment, there is no airway hole 10a.

[0103] In some other embodiments, referring to FIG. 6, FIG. 8, FIG. 10, FIG. 13, FIG. 15 to FIG. 20, and FIG. 24 to FIG. 28, all of the channels are the airway holes 10a. That is, in this embodiment, there is no airway groove 10b.

[0104] In still other embodiments, referring to FIG. 8, FIG. 11, FIG. 12, and FIG. 23, some of all the channels are the airway grooves 10b, and the other channels are the airway holes 10a. That is, in this embodiment, there are both the airway holes 10a and the airway grooves 10b.

[0105] A shape of the airway hole 10a is not limited. For example, in the plane perpendicular to the length direction of the aerosol generating substrate 10, a cross-sectional shape of the airway hole 10a includes at least one of the following: a circle, an ellipse, a racetrack, a polygon, and a sector.

[0106] The racetrack refers to: a shape similar to an athletics track, and is formed by two semicircles and two parallel straight sides alternately connected to each other.

[0107] It is to be noted that, when there are a plurality of airway holes 10a, shapes of cross sections of the airway holes 10a may be totally the same; and alternatively, shapes of cross sections of some airway holes 10a are different, and shapes of cross sections of some airway holes 10a are different. For example, in some embodiments, shapes of cross sections of all of the airway holes 10a may be circular, oval, triangular, rectangular, or the like; and in some other embodiments, some of the airway holes 10a are triangular, some of the airway holes 10a are circular, or the like.

[0108] For example, there are a plurality of airway holes 10a, and both shapes and dimensions of the airway holes 10a are the same. For example, all of the airway holes 10a are regular triangles, and side lengths of all of the regular triangles are equal. For another example, all of the airway holes 10a are circles with a same radius. In this way, all airway holes 10a of the aerosol substrate 11 may be formed based on a same forming mould, thereby reducing manufacturing costs.

[0109] In an embodiment in which there are a plurality of airway holes 10a, an arrangement manner of the airway holes 10a is not limited.

[0110] For example, all of the airway holes 10a are arranged in a matrix manner, a ring shape, an "asterisk" shape, a "grid" shape, or the like.

[0111] It is to be noted that, in this embodiment of this application, the structure shown in the accompanying drawings does not limit a relative dimension relationship between the airway hole 10a and the aerosol substrate 11. The airway hole 10a in the accompanying drawings is merely used for illustrating an arrangement relationship of the airway holes 10a more clearly, and does not particularly indicate a specific dimension of the airway hole 10a.

[0112] For example, a cross-sectional area of the airway hole 10a is 0.0019 mm 2< to 30 mm 2< (square millimeter). For example, 0.002 mm 2< , 0.1 mm 2< , 0.2 mm 2< , 0.4 mm 2< , 0.5 mm 2< , 0.8 mm 2< , 1 mm 2< , 1.3 mm 2< , 1.6 mm 2< , 1.8 mm 2< , 2 mm 2< , 2.1 mm 2< , 2.2 mm 2< , 2.4 mm 2< , 2.6 mm 2< , 2.8 mm 2< , 3 mm 2< , 4 mm 2< , 5 mm 2< , 6 mm 2< , and the like.

[0113] When the cross-sectional area of the airway hole 10a is greater than 30 mm 2< , a quantity of the airway holes 10a is small, the aerosol substrate 11 is prone to scorch, and nonuniform release of the aerosols (for example, large release amounts in the first two times of inhaling and small release amounts in the latter times of inhaling) is prone to occur during a heat-up process of the aerosol substrate 11, affecting inhaling experience of the user.

[0114] When the cross-sectional area of the airway hole 10a is less than 0.0019 mm 2< , difficulty in a forming process may be significantly increased, the dimension of the airway hole 10a is not easily controlled, and a bad product rate of the aerosol substrate 11 may be increased.

[0115] However, when the cross-sectional area of the airway hole 10a is 0.0019 mm 2< to 30 mm 2< , a flow resistance of the aerosol substrate 11 is small (that is, inhaling resistance is small), and a flow velocity of the aerosols is appropriate, so that the aerosol inside the aerosol substrate 11 is easy to be extracted, the aerosol is released uniformly and a utilization rate is high, and the aerosol substrate 11 is not prone to scorch. In this way, use experience of the user is high, and it is convenient for processing and manufacturing.

[0116] In some embodiments, the cross-sectional area of the airway hole 10a is 0.007 mm 2< to 7.1 mm 2< (square millimeter). For example, 0.1 mm 2< , 0.2 mm 2< , 0.4 mm 2< , 0.5 mm 2< , 0.8 mm 2< , 1 mm 2< , 1.3 mm 2< , 1.6 mm 2< , 1.8 mm 2< , 2 mm 2< , 2.1 mm 2< , 2.2 mm 2< , 2.4 mm 2< , 2.6 mm 2< , 2.8 mm 2< , 3 mm 2< , and the like.

[0117] It is to be noted that, in the cross section perpendicular to the length direction of the aerosol substrate 11, all of the airway holes 10a may be uniformly distributed, or may be nonuniformly distributed.

[0118] For example, a hydraulic diameter of the airway hole 10a is 0.1 mm to 3 mm (millimeter). For example, 0.1 mm, 0.2 mm, 0.4 mm, 0.5 mm, 0.8 mm, 1 mm, 1.3 mm, 1.6 mm, 1.8 mm, 2 mm, 2.1 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3 mm, and the like.

[0119] In this embodiment of this application, the hydraulic diameter refers to a ratio of four times of a cross-sectional flow area to a periphery.

[0120] For example, the cross-sectional area of the micro-pore is 0.7 nm 2< (square nanometer) to 710 µm 2< (square micron). For example, 1 nm 2< , 10 nm 2< , 25 nm 2< , 30 nm 2< , 40 nm 2< , 50 nm 2< , 60 nm 2< , 70 nm 2< , 80 nm 2< , 100 nm 2< , 200 nm 2< , 300 nm 2< , 400 nm 2< , 500 nm 2< , 600 nm 2< , 700 nm 2< , 800 nm 2< , 900 nm 2< , 1 µm 2< , 2 µm 2< , 3 µm 2< , and the like.

[0121] When the cross-sectional area of the micro-pore is less than 0.7 nm 2< , an effective component inside the substrate does not easily volatilize to enter the channel. This may cause a reduction in utilization rate of the substrate. However, when the cross-sectional area of the micro-pore is greater than 710 µm 2< , nonuniform heat conduction may be caused in the micro-pore, resulting in reduced inhaling experience. Therefore, in this embodiment, the cross-sectional area of the micro-pore is controlled to 0.7 nm 2< to 710 µm 2< . In this way, the utilization rate of the substrate can be ensured, and the inhaling experience can be improved. Further preferably, the cross-sectional area of the micro-pore is 1963 nm 2< to 20 µm 2< .

[0122] Preferably, the cross-sectional area of the micro-pore is 1963 nm 2< to 20 µm 2< .

[0123] For example, a hydraulic diameter of the micro-pore is 10 nm (nanometer) to 30 µm (micrometer). For example, 10 nm, 20 nm, 24 nm, 30 nm, 40 nm, 50 nm, 60 nm, 70 nm, 80 nm, 100 nm, 200 nm, 300 nm, 400 nm, 500 nm, 600 nm, 700 nm, 800 nm, 900 nm, 1 µm, 2 µm, 3 µm, and the like.

[0124] For example, referring to FIG. 6, FIG. 8, FIG. 10, FIG. 11, and FIG. 12, in an embodiment in which the heating element 12 is in a sheet shape, the heating element 12 is located on the central axis of the aerosol substrate 11, and in the plane perpendicular to the length direction of the aerosol substrate 11, the airway holes 10a are symmetrically distributed about the heating element 12. In this embodiment, the sheet-shaped heating element 12 can effectively increase a heating area of the substrate, improve an overall heating rate and heating uniformity of the substrate, and reduce a waiting time of the user.

[0125] For example, referring to FIG. 15 to FIG. 27, in an embodiment in which the heating element 12 is in a column shape, the heating element 12 is located on the central axis of the aerosol substrate 11, and in the plane perpendicular to the length direction of the aerosol substrate 11, the airway holes 10a exhibit origin symmetry about the heating element 12. Therefore, distances from the heating element 12 to symmetrical airway holes 10a are the same, to be with good heating consistency. For example, in some embodiments, referring to FIG. 15 to FIG. 19, the airway holes 10a are arranged in a ring shape and use the heating element 12 as a center. There may be one or more circles for the ring shape. In some other embodiments, the airway holes 10a are arranged in a matrix, the heating element 12 is located at the center of the matrix, and quantities of rows and columns of the matrix may be the same or may be different. The heating element 12 may occupy a point location of the matrix (referring to FIG. 23 and FIG. 24), or the heating element 12 may not occupy a point location of the matrix (referring to FIG. 27).

[0126] An arrangement manner of the airway holes 10a is not limited.

[0127] For example, all of the airway holes 10a are distributed on a plurality of trajectory lines, each airway hole 10a on a single trajectory line is linearly arranged along a first direction, the plurality of trajectory lines are arranged along a second direction, and the first direction is not parallel to the second direction. The first direction and the second direction form a planar two-dimensional coordinate system, and the first direction and the second direction can define a planar arrangement manner of the airway holes 10a. That is, the airway holes 10a are regularly arranged. In this way, it is convenient to process the airway holes 10a according to a predetermined arrangement rule in a forming process.

[0128] For example, airway holes 10a on the single trajectory line are equidistantly arranged. The equidistant arrangement refers to a case in which distances between hole centers of two adjacent airway holes 10a are equal. In this way, shapes and dimensions of substrate walls between two adjacent airway holes 10a are approximately the same. Therefore, during a process of heating and inhaling, uniformity of releasing aerosols at an aerosol-generating substrate segment may be improved, and it is beneficial to uniformity of aerosol transmission and heating uniformity, thereby improving inhaling experience of the user.

[0129] It is to be noted that, the first direction may be a straight line, or may be a curved line; and the second direction may be a straight line, or may be a curved line.

[0130] For example, in some embodiments, referring to FIG. 16 to FIG. 18, FIG. 19, and FIG. 20, each airway hole 10a on the single trajectory line is arranged along a peripheral direction around the center of the aerosol substrate 11, that is, arranged around the peripheral direction of the heating element 12, and the plurality of trajectory lines are arranged along the radial direction of the aerosol substrate 11. That is, the first direction is the peripheral direction around the center of the aerosol substrate 11, and the second direction is the radial direction. The airway holes 10a are arranged in concentric circles.

[0131] In an embodiment in which the first direction is the peripheral direction around the center of the aerosol substrate 11, for example, referring to FIG. 6, pore sizes of the airway holes 10a on each trajectory line gradually increase along the radially outward direction. That is, a pore size of the airway hole 10a is smaller when being closer to the center of the aerosol substrate 11, and a pore size of the airway hole 10a is larger when being farther from the center of the aerosol substrate 11. The diameter of the airway hole 10a is gradually reduced from the outside to the inside, and an overall heating rate of the substrate is regulated, to enable the aerosols in the substrate to be released more uniformly. Specifically, a smaller diameter of the airway hole 10a indicates more substrate, and therefore, an overall heat conduction rate is slow, and vice versa. In this way, the substrate has good aerosol releasing efficiency in a late stage of inhaling, and use experience of the user is improved.

[0132] In some other embodiments, referring to FIG. 8, FIG. 10, FIG. 23, FIG. 24, and FIG. 27, the airway hole 10a on the single trajectory line is arranged along the first direction, the plurality of trajectory lines are arranged in parallel along the second direction, and the first direction is perpendicular to the second direction. For example, the airway holes 10a are arranged in a matrix manner.

[0133] On the plane perpendicular to the length direction of the aerosol generating substrate 10, a contour shape of the aerosol generating substrate 10 is not limited, and may be, for example, a circular shape, an elliptical shape, a polygonal shape, or the like. This is not limited herein.

[0134] For example, the contour shape and the dimension of the aerosol generating substrate 10 are determined by the aerosol substrate 11, that is, the contour shape and the dimension of the aerosol substrate 11 are the same as those of the aerosol generating substrate 10.

[0135] For example, in this embodiment of this application, an example in which the aerosol generating substrate 10 is in a cylindrical shape is used for description, that is, a contour of a cross section of the aerosol generating substrate 10 is approximately circular. The cylindrical aerosol generating substrate 10 has a regular shape, and this can reduce the difficulty of manufacturing process.

[0136] For example, in the plane perpendicular to the length direction of the aerosol generating substrate 10, the maximum dimension of the contour of the aerosol generating substrate 10 is 4 mm to 10 mm. For example, 4 mm, 5 mm, 6 mm, 6.5 mm, 7 mm, 8 mm, 9 mm, or 10 mm. The dimension range not only enables the aerosol generating substrate 10 to have good structural strength, but also facilitates oral-use of the user.

[0137] The maximum dimension of the contour of the aerosol generating substrate 10 refers to a distance between two farthest points on a contour line of the aerosol generating substrate 10 in the plane perpendicular to the length direction of the aerosol generating substrate 10. For example, when the contour of the aerosol generating substrate 10 is in a cylindrical shape, the maximum dimension of the contour of the aerosol generating substrate 10 is the diameter of the circle. When the contour of the aerosol generating substrate 10 is in an elliptical shape, the maximum dimension of the contour of the aerosol generating substrate 10 is the major axis of the ellipse.

[0138] For example, in the plane perpendicular to the length direction of the aerosol generating substrate 10, the maximum dimension of the contour of the aerosol generating substrate 10 is 6 mm to 8.6 mm. For example, 6 mm, 6.5 mm, 7 mm, 7.4 mm, 7.7 mm, 8 mm, 8.6 mm, or the like.

[0139] In some embodiments, the airway hole 10a in this embodiment of this application extends along a straight line, that is, is approximately parallel to the central axis of the aerosol substrate 11.

[0140] In some other embodiments, referring to FIG. 13 and FIG. 14, the airway hole 10a extends along a curve, for example, helically extends, to form a spiral airway. In this way, a flow rate of gas in the airway hole 10a is improved, to improve efficiency of extracting the aerosols (radial paths are the same, and a path of gas in the substrate is added, to improve a flow rate of airflow and increase a surface contact area between the airflow and the substrate, thereby improve efficiency of extracting the aerosols in the substrate).

[0141] For example, there are usually two or more spiral airways that are symmetrically arranged around the heating element 12.

[0142] For example, the aerosol generating substrate 11 is in an integrated structure. Specifically, the aerosol generating substrate 11 may be directly processed into a required shape by using a mould, rather than a plurality of independent sub-blocks connected together by means such as adhesion. In this way, the structural strength of the aerosol generating substrate 11 is good, and is not easily dispersed.

[0143] The following briefly introduces nineteen specific embodiments of the aerosol generating substrate with reference to the accompanying drawings.First embodiment

[0144] Referring to FIG. 6 and FIG. 7, in this embodiment, the channel includes a plurality of airway holes 10a. There is one heating element 12.

[0145] The heating element 12 is in a flat sheet shape, and is arranged on the central axis of the aerosol substrate 11. All of the airway holes 10a are arranged in mirror symmetry about the heating element 12.

[0146] The airway hole 10a extends along a straight line.

[0147] In this embodiment, no airway groove 10b is arranged on a peripheral outer surface of the aerosol substrate 11. It may be understood that in other embodiments, the peripheral outer surface of the aerosol substrate 11 may alternatively be provided with one or more airway grooves 10b.

[0148] Some of all the airway holes 10a are arranged in concentric circles, and pore sizes of the airway holes 10a gradually increase along the radially outward direction. Pore sizes of airway holes 10a in a same circle are the same.

[0149] On two sides of the heating element 12, and at a radial inner side of the innermost circle, a plurality of airway holes 10a may be arranged in a jack.

[0150] A prefabricated hole 10c is arranged inside the aerosol substrate 11, and the prefabricated hole 10c extends through two ends of the aerosol substrate 11 along the length direction. The heating element 12 is embedded in the prefabricated hole 10c, and two ends of the heating element 12 along the length direction are located inside the aerosol substrate 11. That is, the length of the heating element 12 is shorter than the length of the aerosol substrate 11. When the heating element 12 is embedded in the prefabricated hole 10c, the prefabricated hole 10c on the outside of the two ends of the heating element 12 forms a groove. The groove can change a flow rate of aerosols, and prolong a time of contact between an airflow and the substrate, thereby improving heating efficiency of the substrate and improving inhaling experience of a consumer.Second embodiment

[0151] Referring to FIG. 8 and FIG. 9, in this embodiment, a structure of the aerosol generating substrate 10 is basically the same as that in the first embodiment shown in FIG. 6, and differences mainly include: in this embodiment, a plurality of airway grooves 10b are arranged on a peripheral surface of the aerosol substrate 11; and no prefabricated hole 10c is arranged in the aerosol substrate 11.

[0152] In this embodiment, the plurality of airway grooves 10b are uniformly distributed along a peripheral direction of the aerosol substrate 11.

[0153] The heating element 12 is completely wrapped inside the aerosol substrate 11, and may not be exposed on an external surface of the aerosol substrate 11.

[0154] In this embodiment, airway holes 10a are arranged in a row, a first direction is perpendicular to a second direction, and are both linear directions.

[0155] Quantities of airway holes 10a on single trajectory lines are not exactly the same. For example, quantities of the airway holes 10a on several trajectory lines are five respectively, quantities of the airway holes 10a on other several trajectory lines are three respectively, and the like.Third embodiment

[0156] Referring to FIG. 10, in this embodiment, a structure of the aerosol generating substrate 10 is basically the same as that in the second embodiment shown in FIG. 8 and FIG. 9, and differences mainly include: in this embodiment, a prefabricated hole 10c is provided, and a heating element 12 penetrates the prefabricated hole 10c.Fourth embodiment

[0157] Referring to FIG. 11, in this embodiment, a structure of the aerosol generating substrate 10 is basically the same as that in the third embodiment shown in FIG. 10, and differences mainly include: in this embodiment, a plurality of airway grooves 10b are arranged on a peripheral surface of the aerosol substrate 11.Fifth embodiment

[0158] Referring to FIG. 12, in this embodiment, a structure of the aerosol generating substrate 10 is basically the same as that in the first embodiment shown in FIG. 6, and differences mainly include: in this embodiment, a plurality of airway grooves 10b are arranged on a peripheral surface of the aerosol substrate 11; and in addition, pore sizes of airway holes 10a are the same.Sixth embodiment

[0159] Referring to FIG. 13 and FIG. 14, in this embodiment, an airway hole 10a extends helically, that is, a spiral airway. The spiral airway helps to improve efficiency of extracting aerosols (with same inhaling resistance, the efficiency of extracting aerosols is improved by increasing a path length of gas in the spiral airway and increasing a flow rate of airflow and a contact area between the airflow and the airway hole 10a).

[0160] The aerosol substrate 11 is provided with a prefabricated hole 10c, and a heating element penetrates the prefabricated hole 10c.

[0161] In this embodiment, the aerosol substrate 11 is provided with no airway groove, and is provided with only an airway hole 10a.Seventh embodiment

[0162] Referring to FIG. 15, in this embodiment, a heating element 12 is in a column shape, and is located on a central axis of an aerosol substrate 11.

[0163] An airway hole 10a is in a fan shape. A plurality of airway holes 10a are uniformly arranged around the peripheral direction of the heating element 12. For example, when there are three airway holes 10a, a central angle corresponding to each airway hole 10a is 120°. When there are four airway holes 10a, a central angle corresponding to each airway hole 10a is 90°. When there are six airway holes 10a, a central angle corresponding to each airway hole 10a is 60°.

[0164] In this embodiment, there is a radial isolating wall 111 between two adjacent airway holes 10a, and a wall thickness of a single radial isolating wall 111 at any part may be the same as or may be different from each other.

[0165] In this embodiment, the fan-shaped airway hole 10a may effectively increase flow of fresh airflow in the airway hole 10a, so that a proportion of aerosol in the airflow is reduced, and a temperature of an extracted aerosol is lowered. When a user inhales at intervals, less aerosol is wasted, and a utilization rate of the aerosol may be improved.Eighth embodiment

[0166] Referring to FIG. 16, in this embodiment, based on the seventh embodiment shown in FIG. 15, an arc-shaped spaced wall 112 is added to an airway hole 10a. A single airway hole 10a in the seventh embodiment is separated into a plurality of airway holes 10a arranged in the radial direction, and the airway hole 10a is smaller in volume and more in quantity.

[0167] A thickness of the arc-shaped spaced wall 112 is the same as that of the radial isolating wall 111. In other embodiments, the thickness of the arc-shaped spaced wall 112 may alternatively be different from that of the radial isolating wall 111.

[0168] Each layer of arc-shaped spaced wall 112 has a same thickness along the radial direction. In other embodiments, each layer of arc-shaped spaced wall 112 may alternatively have a different thickness. For example, the thickness gradually increases or gradually decreases along the radially inward direction.

[0169] Widths of each layer of airway holes 10a along the radial direction are the same. In other embodiments, each layer of arc-shaped spaced wall 112 may alternatively have a different thickness. For example, the width gradually increases or gradually decreases along the radially inward direction.

[0170] In this embodiment, the airway holes 10a are not communicated with each other. That is, an airflow in any one of the airway holes 10a may flow to other airway holes 10a through a micro-pore.

[0171] In this embodiment, radial isolating walls 111 of layers of airway holes 10a are aligned, that is, the radial isolating walls 111 are located on a same straight line.Ninth embodiment

[0172] Referring to FIG. 17, a structure of the aerosol generating substrate 10 is basically the same as that in the eighth embodiment shown in FIG. 16, and differences mainly include: at least two airway holes 10a are in communication.

[0173] Specifically, at least one arc-shaped spaced wall 112 is provided with a communication hole 11a; and / or, at least one radial isolating wall 111 is provided with a communication hole 11a.Tenth embodiment

[0174] Referring to FIG. 18, a structure of the aerosol generating substrate 10 is basically the same as that in the eighth embodiment shown in FIG. 16, and differences mainly include: radial isolating walls 111 of layers of airway holes 10a are arranged in a staggered manner, that is, not on a same straight line.Eleventh embodiment

[0175] Referring to FIG. 19 and FIG. 20, in this embodiment, a structure of the aerosol generating substrate 10 is basically the same as that in the first embodiment, and differences mainly include: in this embodiment, a heating element 12 is in a solid column shape, and airway holes 10a are distributed in a plurality of concentric circles.

[0176] Specifically, in this embodiment, a single trajectory line is a circle, a first direction is a peripheral direction around the heating element 12, a second direction is a radial direction, and all of the trajectory lines are distributed in concentric circles.

[0177] In this embodiment, no airway groove 10b is arranged on a peripheral outer surface of the aerosol substrate 11. It may be understood that in other embodiments, the peripheral outer surface of the aerosol substrate 11 may alternatively be provided with one or more airway grooves 10b.Twelfth embodiment

[0178] Referring to FIG. 21, in this embodiment, a structure of the aerosol generating substrate 10 is basically the same as that in the eleventh embodiment, and differences mainly include: in this embodiment, a heating element 12 is in a hollow column shape, that is, the heating element 12 is roughly constructed as a hollow tube.

[0179] Specifically, inside the heating element 12, there is a through hole 12a penetrating two ends of the heating element 12 along the length direction. A pipe diameter of the heating element 12 is small, the through hole 12a is vacant inside, and no part of the aerosol substrate 11 fills the through hole 12a.

[0180] A heating area of the hollow column-shaped heating element 12 to the aerosol substrate 11 is the same as that of the solid heating element 12. In this embodiment, the through hole 12a communicates with a prefabricated hole 10c, to form a path through which an airflow circulates, thereby reducing inhaling resistance and improving user experience.

[0181] In this embodiment, the airway holes 10a are arranged in concentric circles. Pore sizes of airway holes 10a in a same circle may be the same or may be different.

[0182] In this embodiment, no airway groove 10b is arranged on a peripheral outer surface of the aerosol substrate 11. It may be understood that in other embodiments, the peripheral outer surface of the aerosol substrate 11 may alternatively be provided with one or more airway grooves 10b.Thirteenth embodiment

[0183] Referring to FIG. 22, in this embodiment, a structure of the aerosol generating substrate 10 is basically the same as that in the twelfth embodiment shown in FIG. 21, and differences mainly include: in this embodiment, a blind channel 10d is arranged inside the aerosol substrate 11, and at least one end of the blind channel 10d along the length direction is closed.

[0184] Preferably, two ends of the blind channel 10d are closed.

[0185] In a process in which a user inhales at intervals, the blind channel 10d may increase an internal temperature of the aerosol substrate 11 when the user does not inhale, reduce power output of the aerosol generating device 200, and prolong a single endurance time of the aerosol generating device 200. In addition, overall heating uniformity of the aerosol substrate 11 may be improved, and consistency of aerosol release is improved.

[0186] In this embodiment, no airway groove 10b is arranged on a peripheral outer surface of the aerosol substrate 11. It may be understood that in other embodiments, the peripheral outer surface of the aerosol substrate 11 may alternatively be provided with one or more airway grooves 10b.Fourteenth embodiment

[0187] Referring to FIG. 23, in this embodiment, a first direction and a second direction in which airway holes 10a are arranged are perpendicular to each other and are straight lines. The airway holes 10a are roughly arranged in a matrix manner, but a prefabricated hole 10c occupies a point location of the matrix.

[0188] A plurality of airway grooves 10b are arranged on a peripheral surface of the aerosol substrate 11.Fifteenth embodiment

[0189] Referring to FIG. 24, FIG. 25, and FIG. 26, in this embodiment, a heating element 12 is in a hollow column shape, that is, the heating element 12 is roughly constructed as a hollow tube. A through hole is formed in a space inside the heating element 12. An outer diameter of the heating element 12 is greater than an outer diameter of the heating element 12 shown in FIG. 20 and FIG. 21, for example, being 1.5 to 3 times the outer diameter of the heating element 12 in the embodiment shown in FIG. 20 and FIG. 21. In this embodiment, an inner diameter of a through hole 12a is greater than an inner diameter of a through hole 12a of the heating element 12 in FIG. 21, for example, being 1.5 to 3 times the inner diameter of the through hole 12a in the embodiment shown in FIG. 21.

[0190] In this embodiment, the through hole 12a is filled with the aerosol substrate 11.

[0191] For an installation manner of the heating element 12, in some embodiments, after the aerosol substrate 11 is formed, the tube-shaped heating element 12 is attacked into the aerosol substrate 11 from one end of the aerosol substrate 11.

[0192] It is to be noted that, the other end of the heating element 12 may be flush with an end surface of the other end of the aerosol substrate 11, or may be completely located inside the aerosol substrate 11.

[0193] In some other embodiments, the heating element 12 may be placed in a model, and then a raw material required for the aerosol substrate 11 is injected into the model, to be formed through die casting or the like.

[0194] In this embodiment, no airway groove 10b is arranged on a peripheral outer surface of the aerosol substrate 11. It may be understood that in other embodiments, the peripheral outer surface of the aerosol substrate 11 may alternatively be provided with one or more airway grooves 10b.Sixteenth embodiment

[0195] Referring to FIG. 27, a heating element 12 is in a column shape, an aerosol substrate 21 is provided with a prefabricated hole 10c, and the heating element 12 penetrates the prefabricated hole 10c.

[0196] Airway holes 10a are arranged in a matrix manner, for example, a 4*4 matrix arrangement, and the heating element 12 does not occupy a matrix point location.Seventeenth embodiment

[0197] Referring to FIG. 28 and FIG. 29, in this embodiment, a heating element 12 is in a disc shape, and a disc plane of the disc-shaped heating element 12 is not parallel to the length direction of the aerosol substrate 11. Preferably, the disc plane of the heating element 12 is perpendicular to the length direction of the aerosol substrate 11.

[0198] In this embodiment, it is convenient to arrange an induction coil at a bottom wall of a heating chamber 200a of an aerosol generating device 200, to form an end heating manner.

[0199] For example, in a plane perpendicular to the length direction of the aerosol substrate 11, at least one airway hole 10a is located in a projection range of the heating element 12, a through-hole 12b is arranged at a part of the heating element 12 corresponding to the airway hole 10a, and the through-hole 12b is located in an airflow flowing path of the airway hole 10a. In this way, the heating element 12 does not affect airflow flowing in the airway hole 10a. A quantity and positions of the through-holes may be in a one-to-one correspondence with those of the airway holes. Alternatively, a quantity of the through-holes may be greater than that of the airway holes, and each airway hole corresponds to one through-hole.

[0200] In this embodiment, no airway groove 10b is arranged on a peripheral outer surface of the aerosol substrate 11. It may be understood that in other embodiments, the peripheral outer surface of the aerosol substrate 11 may alternatively be provided with one or more airway grooves 10b.Eighteenth embodiment

[0201] Referring to FIG. 30, in this embodiment, a structure of the aerosol generating substrate 10 is basically the same as that in the embodiment shown in FIG. 20, and differences mainly include: in this embodiment, all airway holes 10a extend through a same end of an aerosol substrate 11, and the other end of the airway hole 10a is a blind channel.Nineteenth embodiment

[0202] Referring to FIG. 31, in this embodiment, a structure of the aerosol generating substrate 10 is basically the same as that in the embodiment shown in FIG. 20, and differences mainly include: in this embodiment, some of airway holes 10a extend through one end of an aerosol substrate 11, and the rest of the airway holes 10a extend through the other end of the aerosol substrate 11.

[0203] In the descriptions of this application, descriptions of a reference term such as "an embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a specific feature, structure, material, or characteristic that is described with reference to the embodiment or the example is included in at least one embodiment or example of this application. In this application, exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Besides, the specific features, the structures, the materials or the characteristics that are described may be combined in proper manners in any one or more embodiments or examples. Additionally, without mutual contradiction, those skilled in the art may combine different embodiments or examples described in this application, as well as features of the different embodiments or examples.

[0204] The above contents are merely preferred embodiments of this application and are not used for limiting this application, and this application may be variously modified and changed for those skilled in the art. Any modification, equivalent replacement, or improvement made without departing from the principle of this application shall fall within the protection scope of this application.

Claims

1. An aerosol generating substrate, comprising: an aerosol substrate, wherein the aerosol substrate is provided with channels, and the channel extends through at least one end of the aerosol substrate along the length direction; and a heating element, arranged in the aerosol substrate and configured to heat the aerosol substrate.

2. The aerosol generating substrate of claim 1, wherein the heating element is connected to the aerosol substrate.

3. The aerosol generating substrate of claim 1, wherein there is one heating element extending along the length direction of the aerosol substrate, and the heating element is arranged on a central axis of the aerosol substrate.

4. The aerosol generating substrate of claim 1, wherein the heating element is provided with at least an electromagnetic induction portion, configured to generate heat by inducting a change of an external magnetic field.

5. The aerosol generating substrate of claim 1, wherein the heating element comprises a conductive heating portion and a contact portion electrically connected to the electric heating portion, and the contact portion is configured to be in contact with an external power supply terminal, for the conductive heating portion to be electrified to generate heat.

6. The aerosol generating substrate of claim 1, wherein the aerosol substrate is a particulate aggregate, micro-pores are formed between particles of the particulate aggregate, a plurality of the micro-pores communicate with each other and form a micro-airway that communicates with the channel, and the cross-sectional area of the channel is at least 20 times the cross-sectional area of the micro-pore.

7. The aerosol generating substrate of claim 1, wherein the aerosol substrate is provided with a prefabricated hole, the prefabricated hole extends through at least one end of the aerosol substrate along the length direction, and the heating element is arranged in the prefabricated hole.

8. The aerosol generating substrate of claim 3, wherein the heating element is in a sheet shape, the channels comprise a plurality of airway holes, the airway holes are arranged inside the aerosol substrate, and in a plane perpendicular to the length direction of the aerosol substrate, the airway holes are symmetrically distributed about the heating element.

9. The aerosol generating substrate of claim 3, wherein the heating element is in a column shape, the channels comprise a plurality of airway holes, the airway holes are arranged inside the aerosol substrate, and in a plane perpendicular to the length direction of the aerosol substrate, the channels exhibit origin symmetry about the heating element.

10. The aerosol generating substrate of claim 9, wherein the airway holes are arranged in a circular shape and use the heating element as the center; or the airway holes are arranged in a matrix.

11. The aerosol generating substrate of claim 1, wherein the aerosol substrate completely wraps the heating element.

12. The aerosol generating substrate of claim 1, wherein a blind channel is arranged inside the aerosol substrate, and at least one end of the blind channel along the length direction is closed.

13. The aerosol generating substrate of claim 1, wherein the heating element is in a disc shape, and a disc plane of the disc-shaped heating element is not parallel to the length direction of the aerosol substrate.

14. The aerosol generating substrate of claim 13, wherein in a plane perpendicular to the length direction of the aerosol substrate, the channels comprise a plurality of airway holes, the airway holes are arranged inside the aerosol substrate, at least one of the airway holes is located in a projection range of the heating element, a through-hole is arranged at a part of the heating element corresponding to the airway hole, and the through-hole is located in an airflow flowing path of the airway hole.

15. The aerosol generating substrate of claim 1, wherein the channels comprise a plurality of airway holes, the airway holes are arranged inside the aerosol substrate, all of the airway holes are distributed on a plurality of trajectory lines, each of the airway holes on a single trajectory line is linearly arranged along a first direction, the plurality of trajectory lines are arranged along a second direction, and the first direction is not parallel to the second direction.

16. The aerosol generating substrate of claim 15, wherein each of the airway holes on the single trajectory line is arranged along a peripheral direction around the center of the aerosol substrate, and the plurality of trajectory lines are arranged along the radial direction of the aerosol substrate.

17. The aerosol generating substrate of claim 16, wherein pore sizes of the airway holes on each trajectory line gradually increase along the radially outward direction.

18. The aerosol generating substrate of any one of claims 1 to 17, wherein the aerosol generating substrate is in an integrated structure.

19. An aerosol generating article, comprising: the aerosol generating substrate of any one of claims 1 to 18; a function segment, arranged at one end of the aerosol generating substrate along the length direction, and comprising at least a filter segment used for filtering out aerosols; and an outer wrapping layer, circumferentially wrapping the function segment and the aerosol generating substrate on the outside.

Images