Aerosol generation article and aerosol provision system

Abstract

There is provided an aerosol generation article and an aerosol provision system. The aerosol generation article comprises: an aerosol generating substrate which forms an aerosol under a heating condition; at least one infrared radiation element, arranged within the aerosol generating substrate, generating infrared radiation by receiving heat and heating the aerosol generating substrate at least by radiation. In the present disclosure, an infrared radiation element is arranged in the aerosol generating substrate.

Description

[0001] AEROSOL GENERATION ARTICLE AND AEROSOL PROVISION SYSTEM

[0002] Technical Field

[0003] The present application relates to the field of aerosol provision technology, and particularly relates to an aerosol generation article and an aerosol provision system.

[0004] Technical Background

[0005] An aerosol provision system comprises an aerosol provision device and an aerosol generation article (such as a tobacco product). By inserting the aerosol generation article into the heating chamber of the aerosol provision device and heating the aerosol generation article through the aerosol provision device, an aerosol can be obtained. This heat-not-burn technology enables the aerosol generation article to release its active ingredients during the carbonization stage before combustion, reducing the generation of tar and harmful substances.

[0006] The heating methods of the aerosol provision device include external heating and internal heating. In internal heating a needle-shaped or plate-shaped heating element is inserted into the substrate section of the aerosol generation article, so that the heat diffuses from the center of the aerosol generation article outward. For external heating cylindrical heating element surrounds the substrate section of the aerosol generation article, so that the heat diffuses from the outside to the inside of the aerosol generation article.

[0007] Summary

[0008] In accordance with an aspect, there is provided an aerosol generation article. The article comprises: an aerosol generating substrate, the aerosol generating substrate forming an aerosol under a heating condition; and at least one infrared radiation element, arranged within the aerosol generating substrate, generating an infrared radiation by receiving heat and heating the aerosol generating substrate at least by radiation.

[0009] In some embodiments of any of the above, the infrared radiation element is constructed in a cylindrical, planar, strip-like, globular, or granular shape.

[0010] In some embodiments of any of the above, at least two of the infrared radiation elements are distributed at intervals along the length direction and / or perpendicular to the length direction of the aerosol generating substrate.

[0011] In some embodiments of any of the above, at least two of the infrared radiation elements are evenly distributed at intervals along the length direction and / or perpendicular to the length direction of the aerosol generating substrate.

[0012] In some embodiments of any of the above, the infrared radiation element comprises at least one of the following materials: graphene, quartz and crystal. In some embodiments of any of the above, the thermal conductivity of the infrared radiation element is less than 7000W / m*K.

[0013] In some embodiments of any of the above, the emissivity of the infrared radiation element is less than 1 .0.

[0014] In some embodiments of any of the above, the wall thickness of the infrared radiation element is less than 0.5mm.

[0015] In some embodiments of any of the above, the infrared radiation element comprises: a substrate; and an infrared radiation layer formed on at least a portion of the surface of the substrate.

[0016] In some embodiments of any of the above, the substrate is made of electromagnetic induction material. The electromagnetic induction material comprises iron, cobalt, nickel, gadolinium, erbium or their alloys.

[0017] In some embodiments of any of the above, the maximum working temperature of the substrate does not exceed 500° C.

[0018] In some embodiments of any of the above, the surface of the substrate is a rough surface.

[0019] In some embodiments of any of the above, the surface of the substrate is a rough surface obtained through laser texturing treatment or chemical etching treatment.

[0020] In some embodiments of any of the above, the infrared radiation layer comprises a graphene or ceramic coating.

[0021] In some embodiments of any of the above, the thermal conductivity of the infrared radiation layer is less than 7000W / m*K.

[0022] In some embodiments of any of the above, the emissivity of the infrared radiation layer is less than 1.0.

[0023] In some embodiments of any of the above, the wall thickness of the infrared radiation layer is less than 0.5mm.

[0024] In accordance with an aspect, there is provided an aerosol provision system. The system comprises an aerosol provision device and an aerosol generation article as described above. The aerosol provision device comprises: a containment chamber for accommodating the aerosol generation article; and a heating element provided in the aerosol provision device. When the aerosol generation article is contained within the containment chamber, the infrared radiation element of the aerosol generation article is heated by the heating element to generate infrared radiation and heat the aerosol generating substrate at least by radiation. In some embodiments of any of the above, the containment chamber is a heating chamber.

[0025] In some embodiments of any of the above, the heating element heats up through resistive heating or electromagnetic heating. In some embodiments of any of the above, the heating element comprises at least one of a resistive heating element and a heating element heatable by penetration with a varying magnetic field.

[0026] In some embodiments of any of the above, the aerosol provision device further comprises an inductor for generating an electromagnetic field inside the containment chamber. In some embodiments of any of the above, the electromagnetic field is a varying magnetic field. The heating element and the substrate are located within the electromagnetic field generated by the inductor. In some embodiments of any of the above, the varying magnetic field is configured to cause heating of the heating element. In some embodiments of any of the above, the varying magnetic field is configured to cause heating of the heating element. In some embodiments of any of the above, the varying magnetic field is configured to cause heating of the infrared radiation element.

[0027] An infrared radiation element is arranged in the aerosol generating substrate, and the infrared radiation element receives heat to generate infrared radiation and heats the surrounding aerosol generating substrate by radiation. During the heating process of the aerosol generation article, the infrared radiation element plays a role in diffusing heat, which may make the temperature of the surrounding aerosol generating substrate more uniform. This may reduce a temperature difference among various regions of the aerosol generating substrate and improve the puffing taste. The infrared radiation element may improve the thermal utilization efficiency and may reduce the external energy required for heating the aerosol generation article. Power consumption may be saved.

[0028] Brief Description of the Drawings

[0029] Embodiments will now be described, by way of example only, and with reference to the accompanying drawings in which:

[0030] FIG. 1 is a cross-sectional view of an aerosol generation article;

[0031] FIGS. 2-7 are perspective views of a substrate section of the aerosol generation article of Figure 1 ;

[0032] FIG. 8 is a cross-sectional view of another aerosol generation article;

[0033] FIG. 9 is a perspective view of a partial structure of the aerosol generation article shown in FIG. 8;

[0034] FIG. 10 is a structural schematic diagram of an aerosol provision system;

[0035] FIG. 11 is a cross-sectional view of a partial structure of an aerosol provision system; and

[0036] FIG. 12 is a cross-sectional view of a partial structure of another aerosol provision system. Description of reference numerals in the drawings: 10 Aerosol generation article, 101 Substrate section, 102 Packaging material, 103 Aerosol generating substrate, 104 Infrared radiation element, 105 Substrate, 106 Infrared radiation layer, 20 Aerosol provision device, 201 Housing, 202 Containment chamber, 203 Battery module, 204 Heating element, 205 Inductor.

[0037] Detailed Description

[0038] The following describes some embodiments with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining technical principles and are not intended to limit the scope of protection.

[0039] As used herein, the term “delivery system” is intended to encompass systems that deliver at least one substance to a user in use, and includes: combustible aerosol provision systems, such as cigarettes, cigarillos, cigars, and tobacco for pipes or for roll-your-own or for make-your-own cigarettes (whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, tobacco substitutes or other smokable material); non-combustible aerosol provision systems that release compounds from an aerosolgenerating material without combusting the aerosol-generating material, such as electronic cigarettes, tobacco heating products, and hybrid systems to generate aerosol using a combination of aerosol-generating materials; and aerosol-free delivery systems that deliver the at least one substance to a user orally, nasally, transdermally or in another way without forming an aerosol, including but not limited to, lozenges, gums, patches, articles comprising inhalable powders, and oral products such as oral tobacco which includes snus or moist snuff, wherein the at least one substance may or may not comprise nicotine.

[0040] A “combustible” aerosol provision system is one where a constituent aerosolgenerating material of the aerosol provision system (or component thereof) is combusted or burned during use in order to facilitate delivery of at least one substance to a user.

[0041] In some embodiments, the delivery system is a combustible aerosol provision system, such as a system selected from the group consisting of a cigarette, a cigarillo and a cigar.

[0042] In some embodiments, the disclosure relates to a component for use in a combustible aerosol provision system, such as a filter, a filter rod, a filter segment, a tobacco rod, a spill, an aerosol-modifying agent release component such as a capsule, a thread, or a bead, or a paper such as a plug wrap, a tipping paper or a cigarette paper. A “non-combustible” aerosol provision system is one where a constituent aerosolgenerating material of the aerosol provision system (or component thereof) is not combusted or burned in order to facilitate delivery of at least one substance to a user.

[0043] In some embodiments, the delivery system is a non-combustible aerosol provision system, such as a powered non-combustible aerosol provision system.

[0044] In some embodiments, the non-combustible aerosol provision system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it is noted that the presence of nicotine in the aerosol-generating material is not a requirement.

[0045] In some embodiments, the non-combustible aerosol provision system is an aerosolgenerating material heating system, also known as a heat-not-burn system. An example of such a system is a tobacco heating system.

[0046] In some embodiments, the non-combustible aerosol provision system is a hybrid system to generate aerosol using a combination of aerosol-generating materials, one or a plurality of which may be heated. Each of the aerosol-generating materials may be, for example, in the form of a solid, liquid or gel and may or may not contain nicotine. In some embodiments, the hybrid system comprises a liquid or gel aerosol-generating material and a solid aerosol-generating material. The solid aerosol-generating material may comprise, for example, tobacco or a non-tobacco product.

[0047] Typically, the non-combustible aerosol provision system may comprise a non- combustible aerosol provision device and a consumable for use with the non-combustible aerosol provision device.

[0048] In some embodiments, the disclosure relates to consumables comprising aerosolgenerating material and configured to be used with non-combustible aerosol provision devices. These consumables are sometimes referred to as articles throughout the disclosure.

[0049] In some embodiments, the non-combustible aerosol provision system, such as a non- combustible aerosol provision device thereof, may comprise a power source and a controller. The power source may, for example, be an electric power source or an exothermic power source. In some embodiments, the exothermic power source comprises a carbon substrate which may be energised so as to distribute power in the form of heat to an aerosol-generating material or to a heat transfer material in proximity to the exothermic power source.

[0050] In some embodiments, the non-combustible aerosol provision system may comprise an area for receiving the consumable, an aerosol generator, an aerosol generation area, a housing, a mouthpiece, a filter and / or an aerosol-modifying agent.

[0051] In some embodiments, the consumable for use with the non-combustible aerosol provision device may comprise aerosol-generating material, an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generator, an aerosol generation area, a housing, a wrapper, a filter, a mouthpiece, and / or an aerosolmodifying agent.

[0052] In some embodiments, the delivery system is an aerosol-free delivery system that delivers at least one substance to a user orally, nasally, transdermally or in another way without forming an aerosol, including but not limited to, lozenges, gums, patches, articles comprising inhalable powders, and oral products such as oral tobacco which includes snus or moist snuff, wherein the at least one substance may or may not comprise nicotine.

[0053] In some embodiments, the substance to be delivered may be an aerosol-generating material or a material that is not intended to be aerosolised. As appropriate, either material may comprise one or more active constituents, one or more flavours, one or more aerosolformer materials, and / or one or more other functional materials.

[0054] In some embodiments, the substance to be delivered comprises an active substance. The active substance as used herein may be a physiologically active material, which is a material intended to achieve or enhance a physiological response. The active substance may for example be selected from nutraceuticals, nootropics, psychoactives. The active substance may be naturally occurring or synthetically obtained. The active substance may comprise for example nicotine, caffeine, taurine, theine, vitamins such as B6 or B12 or C, melatonin, cannabinoids, or constituents, derivatives, or combinations thereof. The active substance may comprise one or more constituents, derivatives or extracts of tobacco, cannabis or another botanical.

[0055] In some embodiments, the active substance comprises nicotine. In some embodiments, the active substance comprises caffeine, melatonin or vitamin B12.

[0056] As noted herein, the active substance may comprise one or more constituents, derivatives or extracts of cannabis, such as one or more cannabinoids or terpenes.

[0057] As noted herein, the active substance may comprise or be derived from one or more botanicals or constituents, derivatives or extracts thereof. As used herein, the term "botanical" includes any material derived from plants including, but not limited to, extracts, leaves, bark, fibres, stems, roots, seeds, flowers, fruits, pollen, husk, shells or the like. Alternatively, the material may comprise an active compound naturally existing in a botanical, obtained synthetically. The material may be in the form of liquid, gas, solid, powder, dust, crushed particles, granules, pellets, shreds, strips, sheets, or the like.

[0058] Example botanicals are tobacco, eucalyptus, star anise, hemp, cocoa, cannabis, fennel, lemongrass, peppermint, spearmint, rooibos, chamomile, flax, ginger, ginkgo biloba, hazel, hibiscus, laurel, licorice (liquorice), matcha, mate, orange skin, papaya, rose, sage, tea such as green tea or black tea, thyme, clove, cinnamon, coffee, aniseed (anise), basil, bay leaves, cardamom, coriander, cumin, nutmeg, oregano, paprika, rosemary, saffron, lavender, lemon peel, mint, juniper, elderflower, vanilla, Wintergreen, beefsteak plant, curcuma, turmeric, sandalwood, cilantro, bergamot, orange blossom, myrtle, cassis, valerian, pimento, mace, damien, marjoram, olive, lemon balm, lemon basil, chive, carvi, verbena, tarragon, geranium, mulberry, ginseng, theanine, theacrine, maca, ashwagandha, damiana, guarana, chlorophyll, baobab or any combination thereof. The mint may be chosen from the following mint varieties: Mentha Arventis, Mentha c.v., Mentha niliaca, Mentha piperita, Mentha piperita citrata c.v., Mentha piperita c.v, Mentha spicata crispa, Mentha cardifolia, Memtha longifolia, Mentha suaveolens variegata, Mentha pulegium, Mentha spicata c.v. and Mentha suaveolens.

[0059] In some embodiments, the active substance comprises or is derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is tobacco. In some embodiments, the active substance comprises or derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is selected from eucalyptus, star anise, cocoa and hemp.

[0060] In some embodiments, the active substance comprises or derived from one or more botanicals or constituents, derivatives or extracts thereof and the botanical is selected from rooibos and fennel.

[0061] In some embodiments, the substance to be delivered comprises a flavour. As used herein, the terms "flavour" and "flavourant" refer to materials which, where local regulations permit, may be used to create a desired taste, aroma or other somatosensorial sensation in a product for adult consumers. They may include naturally occurring flavour materials, botanicals, extracts of botanicals, synthetically obtained materials, or combinations thereof (e.g., tobacco, cannabis, licorice (liquorice), hydrangea, eugenol, Japanese white bark magnolia leaf, chamomile, fenugreek, clove, maple, matcha, menthol, Japanese mint, aniseed (anise), cinnamon, turmeric, Indian spices, Asian spices, herb, Wintergreen, cherry, berry, red berry, cranberry, peach, apple, orange, mango, clementine, lemon, lime, tropical fruit, papaya, rhubarb, grape, durian, dragon fruit, cucumber, blueberry, mulberry, citrus fruits, Drambuie, bourbon, scotch, whiskey, gin, tequila, rum, spearmint, peppermint, lavender, aloe vera, cardamom, celery, cascarilla, nutmeg, sandalwood, bergamot, geranium, khat, naswar, betel, shisha, pine, honey essence, rose oil, vanilla, lemon oil, orange oil, orange blossom, cherry blossom, cassia, caraway, cognac, jasmine, ylang-ylang, sage, fennel, wasabi, piment, ginger, coriander, coffee, hemp, a mint oil from any species of the genus Mentha, eucalyptus, star anise, cocoa, lemongrass, rooibos, flax, ginkgo biloba, hazel, hibiscus, laurel, mate, orange skin, rose, tea such as green tea or black tea, thyme, juniper, elderflower, basil, bay leaves, cumin, oregano, paprika, rosemary, saffron, lemon peel, mint, beefsteak plant, curcuma, cilantro, myrtle, cassis, valerian, pimento, mace, damien, marjoram, olive, lemon balm, lemon basil, chive, carvi, verbena, tarragon, limonene, thymol, camphene), flavour enhancers, bitterness receptor site blockers, sensorial receptor site activators or stimulators, sugars and / or sugar substitutes (e.g., sucralose, acesulfame potassium, aspartame, saccharine, cyclamates, lactose, sucrose, glucose, fructose, sorbitol, or mannitol), and other additives such as charcoal, chlorophyll, minerals, botanicals, or breath freshening agents. They may be imitation, synthetic or natural ingredients or blends thereof. They may be in any suitable form, for example, liquid such as an oil, solid such as a powder, or gas.

[0062] In some embodiments, the flavour comprises menthol, spearmint and / or peppermint. In some embodiments, the flavour comprises flavour components of cucumber, blueberry, citrus fruits and / or redberry. In some embodiments, the flavour comprises eugenol. In some embodiments, the flavour comprises flavour components extracted from tobacco. In some embodiments, the flavour comprises flavour components extracted from cannabis.

[0063] In some embodiments, the flavour may comprise a sensate, which is intended to achieve a somatosensorial sensation which are usually chemically induced and perceived by the stimulation of the fifth cranial nerve (trigeminal nerve), in addition to or in place of aroma or taste nerves, and these may include agents providing heating, cooling, tingling, numbing effect. A suitable heat effect agent may be, but is not limited to, vanillyl ethyl ether and a suitable cooling agent may be, but not limited to eucolyptol, WS-3.

[0064] Aerosol-generating material is a material that is capable of generating aerosol, for example when heated, irradiated or energized in any other way. Aerosol-generating material may, for example, be in the form of a solid, liquid or gel which may or may not contain an active substance and / or flavourants. In some embodiments, the aerosol-generating material may comprise an “ amorphous solid ” , which may alternatively be referred to as a “ monolithic solid” (i.e. non-fibrous). In some embodiments, the amorphous solid may be a dried gel. The amorphous solid is a solid material that may retain some fluid, such as liquid, within it. In some embodiments, the aerosol-generating material may for example comprise from about 50wt%, 60wt% or 70wt% of amorphous solid, to about 90wt%, 95wt% or 100wt% of amorphous solid.

[0065] The aerosol-generating material may comprise one or more active substances and / or flavours, one or more aerosol-former materials, and optionally one or more other functional material.

[0066] The aerosol-former material may comprise one or more constituents capable of forming an aerosol. In some embodiments, the aerosol-former material may comprise one or more of glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1 ,3-butylene glycol, erythritol, meso-Erythritol, ethyl vanillate, ethyl laurate, a diethyl suberate, triethyl citrate, triacetin, a diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate. The one or more other functional materials may comprise one or more of pH regulators, colouring agents, preservatives, binders, fillers, stabilizers, and / or antioxidants.

[0067] The material may be present on or in a support, to form a substrate. The support may, for example, be or comprise paper, card, paperboard, cardboard, reconstituted material, a plastics material, a ceramic material, a composite material, glass, a metal, or a metal alloy. In some embodiments, the support comprises a susceptor. In some embodiments, the susceptor is embedded within the material. In some alternative embodiments, the susceptor is on one or either side of the material.

[0068] A consumable is an article comprising or consisting of aerosol-generating material, part or all of which is intended to be consumed during use by a user. A consumable may comprise one or more other components, such as an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generation area, a housing, a wrapper, a mouthpiece, a filter and / or an aerosol-modifying agent. A consumable may also comprise an aerosol generator, such as a heater, that emits heat to cause the aerosol-generating material to generate aerosol in use. The heater may, for example, comprise combustible material, a material heatable by electrical conduction, or a susceptor.

[0069] A susceptor is a material that is heatable by penetration with a varying magnetic field, such as an alternating magnetic field. The susceptor may be an electrically-conductive material, so that penetration thereof with a varying magnetic field causes induction heating of the heating material. The heating material may be magnetic material, so that penetration thereof with a varying magnetic field causes magnetic hysteresis heating of the heating material. The susceptor may be both electrically-conductive and magnetic, so that the susceptor is heatable by both heating mechanisms. The device that is configured to generate the varying magnetic field is referred to as a magnetic field generator, herein.

[0070] An aerosol-modifying agent is a substance, typically located downstream of the aerosol generation area, that is configured to modify the aerosol generated, for example by changing the taste, flavour, acidity or another characteristic of the aerosol. The aerosolmodifying agent may be provided in an aerosol-modifying agent release component, that is operable to selectively release the aerosol-modifying agent. The aerosol-modifying agent may, for example, be an additive or a sorbent. The aerosol-modifying agent may, for example, comprise one or more of a flavourant, a colourant, water, and a carbon adsorbent. The aerosol-modifying agent may, for example, be a solid, a liquid, or a gel. The aerosol-modifying agent may be in powder, thread or granule form. The aerosol-modifying agent may be free from filtration material.

[0071] An aerosol generator is an apparatus configured to cause aerosol to be generated from the aerosol-generating material. In some embodiments, the aerosol generator is a heater configured to subject the aerosol-generating material to heat energy, so as to release one or more volatiles from the aerosol-generating material to form an aerosol. In some embodiments, the aerosol generator is configured to cause an aerosol to be generated from the aerosolgenerating material without heating. For example, the aerosol generator may be configured to subject the aerosol-generating material to one or more of vibration, increased pressure, or electrostatic energy.

[0072] Aerosol delivery systems may also be referred to as vapour delivery systems such as nebulisers or e-cigarettes. Throughout the following description the term "e-cigarette" or "electronic cigarette" may sometimes be used, but it will be appreciated this term may be used interchangeably with aerosol delivery system I device and electronic aerosol delivery system I device. Furthermore, and as is common in the technical field, the terms "aerosol" and "vapour", and related terms such as "vaporise", "volatilise" and "aerosolise", may generally be used interchangeably.

[0073] Aerosol delivery systems (e-cigarettes) often, though not always, comprise a modular assembly comprising a reusable device part and a replaceable (disposable / consumable) cartridge part. Often, the replaceable cartridge part will comprise the aerosol-generating material and the vaporiser (which may collectively be called a “cartomizer” ) and the reusable device part will comprise the power provision (e.g. rechargeable power source) and control circuitry. It will be appreciated these different parts may comprise further elements depending on functionality. For example, the reusable device part will often comprise a user interface for receiving user input and displaying operating status characteristics, and the replaceable cartridge device part in some cases comprises a temperature sensor for helping to control temperature. Cartridges are electrically and mechanically coupled to the control unit for use, for example using a screw thread, bayonet, or magnetic coupling with appropriately arranged electrical contacts. When the aerosol-generating material in a cartridge is exhausted, or the user wishes to switch to a different cartridge having a different aerosol-generating material, the cartridge may be removed from the reusable part and a replacement cartridge attached in its place. Systems and devices conforming to this type of two-part modular configuration may generally be referred to as two-part systems / devices.

[0074] It is common for electronic cigarettes to have a generally elongate shape. For the sake of providing a concrete example, certain embodiments of the disclosure will be taken to comprise this kind of generally elongate two-part system employing disposable cartridges. However, it will be appreciated that the underlying principles described herein may equally be adopted for different configurations, for example single-part systems or modular systems comprising more than two parts, refillable devices and single-use disposables, as well as other overall shapes, for example based on so-called box-mod high performance devices that typically have a boxier shape. More generally, it will be appreciated certain embodiments of the disclosure are based on aerosol delivery systems which are operationally configured to provide functionality in accordance with the principles described herein and the constructional aspects of systems configured to provide the functionality in accordance with certain embodiments of the disclosure is not of primary significance.

[0075] Existing aerosol generation articles may exhibit a large temperature difference in the substrate section during the heating process, which may result in a poor puffing taste. Through improved design of the substrate section of the aerosol generation article, under the same heating technology, the temperature distribution in various regions of the aerosol generation article may be more uniform, and the puffing taste may be improved.

[0076] The following will introduce in detail the structures of an aerosol generation article and an aerosol provision system by means of specific embodiments.

[0077] As shown in FIG. 1 , the aerosol generation article 10 has a substrate section 101. The substrate section 101 comprises a packaging material 102, an aerosol generating substrate

[0078] 103 provided inside the packaging material 102, and at least one infrared radiation element 104. The aerosol generating substrate 103 can form an aerosol under a heating condition. The infrared radiation element 104 is arranged in the aerosol generating substrate 103, generates infrared radiation by receiving heat, and heats the aerosol generating substrate 103 at least by radiation. By radiating heat through the infrared radiation element, the temperature difference among various regions of the aerosol generating substrate can be reduced, and the puffing taste can be improved.

[0079] Wherein, the shape of the infrared radiation element 104 may be cylindrical, planar, strip-like, globular, or granular. The distribution mode of multiple infrared radiation elements

[0080] 104 in the aerosol generating substrate 103 can be: distributed at intervals along the length direction of the aerosol generating substrate 103; distributed at intervals along the direction perpendicular to the length direction of the aerosol generating substrate 103; or distributed at intervals both along the length direction of the aerosol generating substrate 103 and along the direction perpendicular to the length direction of the aerosol generating substrate 103. The spacing distances between multiple infrared radiation elements 104 can be the same or different.

[0081] In a possible implementation, the infrared radiation element 104 is made of an infrared radiation material, and the material is selected from at least one of graphene, a metal foil with a ceramic coating, quartz, and crystal materials. It may be a single infrared radiation material or a composite of multiple infrared radiation materials. The thermal conductivity of the infrared radiation element 104 is less than 7000W / mK, the emissivity is less than 1.0, and the wall thickness is less than 0.5mm. Among them, the proportion of all infrared radiation-related oxides, carbides, or carbon materials such as graphene and quartz in the aerosol generating substrate 103 does not exceed 5%, ensuring that the aerosol generating substrate 103 produces a normal amount of aerosol when heated, without the need to particularly increase the length and radial dimensions of the aerosol generation article 10 due to the addition of the infrared radiation element 104.

[0082] FIGS. 2-7 illustrate the possible distribution of the infrared radiation element 104 in the aerosol generating substrate 103.

[0083] As illustrated in FIG. 2, the infrared radiation element 104 is constructed in a cylindrical shape similar to that of the external packaging material 102 and is embedded in the aerosol generating substrate 103. The length direction of the cylindrical infrared radiation element 104 is consistent with the length direction of the aerosol generation article 10. The aerosol generating substrate 103 is distributed in the space surrounded by the infrared radiation element 104 and between the outer surface of the infrared radiation element 104 and the inner surface of the packaging material 102. The number of cylindrical infrared radiation elements 104 can be one or more. When the number of infrared radiation elements 104 is multiple, the multiple infrared radiation elements 104 can be arranged around the inner wall of the packaging material 102 for one circle, or can be arranged in an inner-outer nested manner. When the aerosol generation article 10 is heated, the cylindrical infrared radiation element 104 can uniformly radiate heat to the surroundings, reducing the temperature difference of the aerosol generating substrate 103 in the radial direction.

[0084] Wherein, the material of the infrared radiation element 104 is optionally graphene, a metal foil with a ceramic coating, quartz, or crystal material. The thermal conductivity of the infrared radiation element 104 can be 7000W / mK or less, optionally less than 6000W / mK or less, more optionally 5000W / mK or less, more optionally 4000W / mK or less, more optionally 3000W / mK or less, more optionally 2000W / mK or less, more optionally 1000W / mK or less, more optionally 500W / mK or less, more optionally 300W / mK or less, more optionally 200W / mK or less. The emissivity of the infrared radiation element 104 can be 1.0 or less, optionally 0.9 or less, more optionally 0.8 or less. The wall thickness of the infrared radiation element 104 can be 0.5mm or less, optionally 0.2mm or less, more optionally 0.1 mm or less, more optionally 0.08mm or less, more optionally 0.06mm or less, more optionally 0.04mm or less, more optionally 0.02mm or less.

[0085] As illustrated in FIG. 3, multiple infrared radiation elements 104 are distributed at intervals along the length direction of the aerosol generation article 10. These infrared radiation elements 104 are constructed in a planar shape with an outer contour similar to the cross-section of the aerosol generation article 10, such as circular or elliptical. When the aerosol generation article 10 is heated, the infrared radiation element 104 can uniformly radiate heat to the surroundings, reducing the temperature difference of the aerosol generating substrate 103 in the length direction. Wherein, the material of the infrared radiation element 104 is optionally graphene, a metal foil with a ceramic coating, quartz, or crystal material. The thermal conductivity of the infrared radiation element 104 can be 7000W / mK or less, optionally less than 6000W / mK or less, more optionally 5000W / mK or less, more optionally 4000W / mK or less, more optionally 3000W / mK or less, more optionally 2000W / mK or less, more optionally 1000W / mK or less, more optionally 500W / mK or less, more optionally 300W / mK or less, more optionally 200W / m*K or less. The emissivity of the infrared radiation element 104 can be 1.0 or less, optionally 0.9 or less, more optionally 0.8 or less. The wall thickness of the infrared radiation element 104 can be 0.5mm or less, optionally 0.2mm or less, more optionally 0.1 mm or less, more optionally 0.08mm or less, more optionally 0.06mm or less, more optionally 0.04mm or less, more optionally 0.02mm or less.

[0086] As illustrated in FIG. 4, multiple infrared radiation elements 104 are embedded in the aerosol generating substrate 103 and are wrapped as a whole in the packaging material 102. These infrared radiation elements 104 are constructed in a planar shape, and their width and length can be the same or different, optionally, both the width and length of the planar infrared radiation element 104 are smaller than the diameter of the substrate section 101. When the aerosol generation article 10 is heated, the infrared radiation element 104 can uniformly radiate heat to the surroundings, reducing the temperature differences of the aerosol generating substrate 103 in the radial direction and the length direction.

[0087] Wherein, the material of the infrared radiation element 104 is optionally graphene, a metal foil with a ceramic coating, quartz, or crystal material. The thermal conductivity of the infrared radiation element 104 can be 7000W / mK or less, optionally less than 6000W / mK or less, more optionally 5000W / mK or less, more optionally 4000W / mK or less, more optionally 3000W / mK or less, more optionally 2000W / mK or less, more optionally 1000W / mK or less, more optionally 500W / mK or less, more optionally 300W / mK or less, more optionally 200W / mK or less. The emissivity of the infrared radiation element 104 can be 1.0 or less, optionally 0.9 or less, more optionally 0.8 or less. The wall thickness of the infrared radiation element 104 can be 0.5mm or less, optionally 0.2mm or less, more optionally 0.1mm or less, more optionally 0.08mm or less, more optionally 0.06mm or less, more optionally 0.04mm or less, more optionally 0.02mm or less.

[0088] As illustrated in FIG. 5, multiple infrared radiation elements 104 are embedded in the aerosol generating substrate 103 and are wrapped as a whole in the packaging material 102. These infrared radiation elements 104 are constructed in an elongated strip shape or needle shape, and the length direction of the infrared radiation element 104 is parallel to the length direction of the aerosol generation article 10. Wherein, the material of the infrared radiation element 104 is optionally quartz, its thermal conductivity is optionally less than 1000W / mK, and its emissivity is optionally lower than 1.0. When the aerosol generation article 10 is heated, the infrared radiation element 104 can uniformly radiate heat to the surroundings, reducing the temperature differences of the aerosol generating substrate 103 in the radial direction and the length direction.

[0089] Wherein, the material of the infrared radiation element 104 is optionally graphene, a metal foil with a ceramic coating, quartz, or crystal material. The thermal conductivity of the infrared radiation element 104 can be 7000W / mK or less, optionally less than 6000W / mK or less, more optionally 5000W / mK or less, more optionally 4000W / mK or less, more optionally 3000W / mK or less, more optionally 2000W / mK or less, more optionally 1000W / mK or less, more optionally 500W / mK or less, more optionally 300W / mK or less, more optionally 200W / mK or less. The emissivity of the infrared radiation element 104 can be 1.0 or less, optionally 0.9 or less, more optionally 0.8 or less.

[0090] As illustrated in FIG. 6, multiple infrared radiation elements 104 are embedded in the aerosol generating substrate 103 and are wrapped as a whole in the packaging material 102. These infrared radiation elements 104 are constructed in a granular shape and are mixed with the aerosol generating substrate 103. Wherein, the material of the infrared radiation element 104 is optionally crystal, its thermal conductivity is optionally less than 3000W / mK, and its emissivity is optionally lower than 0.9. When the aerosol generation article 10 is heated, the infrared radiation element 104 can uniformly radiate heat to the surroundings, making the temperatures of various regions of the aerosol generating substrate 103 tend to be consistent.

[0091] Wherein, the material of the infrared radiation element 104 is optionally graphene, a metal foil with a ceramic coating, quartz, or crystal material. The thermal conductivity of the infrared radiation element 104 can be 7000W / mK or less, optionally less than 6000W / mK or less, more optionally 5000W / mK or less, more optionally 4000W / mK or less, more optionally 3000W / mK or less, more optionally 2000W / mK or less, more optionally 1000W / mK or less, more optionally 500W / mK or less, more optionally 300W / mK or less, more optionally 200W / mK or less. The emissivity of the infrared radiation element 104 can be 1.0 or less, optionally 0.9 or less, more optionally 0.8 or less.

[0092] As illustrated in FIG. 7, the infrared radiation element 104 is constructed in a smaller powder form. These powder-like infrared radiation elements 104 are mixed with the aerosol generating substrate 103 and then wrapped in the packaging material 102. Wherein, the material of the infrared radiation element 104 is optionally graphene, its thermal conductivity is optionally less than 5000W / mK, and its emissivity is optionally lower than 0.8. When the aerosol generation article 10 is heated, the infrared radiation element 104 can absorb heat and then uniformly radiate the heat to the surroundings, making the temperatures of various regions of the aerosol generating substrate 103 tend to be consistent.

[0093] Wherein, the material of the infrared radiation element 104 is optionally graphene, a metal foil with a ceramic coating, quartz, or crystal material. The thermal conductivity of the infrared radiation element 104 can be 7000W / mK or less, optionally less than 6000W / mK or less, more optionally 5000W / mK or less, more optionally 4000W / mK or less, more optionally 3000W / mK or less, more optionally 2000W / mK or less, more optionally 1000W / mK or less, more optionally 500W / mK or less, more optionally 300W / mK or less, more optionally 200W / m*K or less. The emissivity of the infrared radiation element 104 can be 1.0 or less, optionally 0.9 or less, more optionally 0.8 or less.

[0094] In this embodiment, the infrared radiation element 104 is arranged in the aerosol generating substrate 103. During the process of heating the aerosol generation article 10, the infrared radiation element 104 absorbs the heat emitted by the external heat source and radiates the heat to the surroundings, so that the aerosol generating substrate 103 far away from the external heat source is heated, achieving the effect of making the temperature of the aerosol generating substrate 103 close to the external heat source tend to be consistent with the temperature of the aerosol generating substrate 103 far away from the external heat source, and improving the puffing taste.

[0095] In another possible implementation, the infrared radiation element 104 includes a substrate 105 and an infrared radiation layer 106 formed on at least a portion of the surface of the substrate 105. The infrared radiation element 104 in this embodiment is composed of two materials with different functions. The internal substrate 105 is made of an electromagnetic induction material and can generate heat in an electromagnetic field. The external infrared radiation layer 106 is made of an infrared radiation material and can transfer heat by radiation, enabling the heat to spread evenly. Wherein, the maximum working temperature of the substrate 105 does not exceed 500° C. The thermal conductivity of the infrared radiation layer 106 is less than 7000W / mK, the emissivity is less than 1.0, and the wall thickness is less than 0.5mm. The material of the substrate 105 includes iron, cobalt, nickel, gadolinium, erbium, or their alloys, and the infrared radiation layer 106 includes graphene or a ceramic coating. Among them, the proportion of all the infrared radiation elements 104 in the aerosol generating substrate 103 does not exceed 5%, and it does not affect the aerosol generating substrate 103 to produce a normal amount of aerosol when heated.

[0096] In a possible implementation, the surface of the substrate is a rough surface. Specifically, the surface of the substrate can be roughened by a laser texturing treatment method or a chemical etching process. Roughening the surface of the substrate is beneficial for the firm adhesion of the infrared radiation coating to the surface of the substrate. After the surface of the substrate is roughened, the substrate will have an increased resistance due to the skin effect, thereby improving the heating efficiency. Compared with a substrate with a smooth surface, for the two to reach the same heating temperature, the current of the substrate with a rough surface is smaller than that of the substrate with a smooth surface, so the energy consumption can be reduced.

[0097] FIGS. 8 and 9 illustrate a structural schematic diagram of an aerosol generation article 10. As illustrated in FIGS. 8 and 9, one or more infrared radiation elements 104 are arranged in the aerosol generating substrate 103, and each infrared radiation element 104 includes a substrate 105 and an infrared radiation layer 106 arranged on the surface of the substrate 105. The shape of the infrared radiation element 104 can be any shape as shown in FIGS. 2-7. The infrared radiation layer 106 can be an infrared radiation coating applied to the surface of the substrate 105. The substrate 105 can be made of iron, cobalt, nickel, gadolinium, erbium, or their alloys that can be used as a magnetic field sensor, and its Curie temperature does not exceed 500° C. The infrared radiation layer 106 may comprise graphene or a ceramic coating. The thermal conductivity of the infrared radiation layer 106 can be 7000W / mK or less, 6000W / mK or less, more preferably 5000W / mK or less, 4000W / mK or less, 3000W / mK or less, 2000W / mK or less, 1000W / mK or less, 500W / mK or less, 300W / mK or less, 200W / m*K or less. The emissivity of the infrared radiation layer 106 can be 1.0 or less, 0.9 or less, 0.8 or less. The wall thickness of the infrared radiation layer 106 can be 0.5mm or less, 0.2mm or less, 0.1 mm or less, 0.08mm or less, 0.06mm or less, 0.04mm or less, 0.02mm or less.

[0098] When the aerosol generation article 10 is heated, after the infrared radiation layer 106 absorbs the heat emitted by the external heat source, it radiates the heat to the surrounding aerosol generating substrate 103. Therefore, the aerosol generating substrate 103 far away from the external heat source will be heated by the infrared radiation layer 106, and its temperature will be as close as possible to the temperature of the aerosol generating substrate 103 close to the external heat source. The aerosol generation article 10 can be heated by resistive heating or electromagnetic heating. When the aerosol generation article 10 is heated by electromagnetic heating, the substrate 105 generates heat in a magnetic field environment, and the heat from the substrate 105 will be conducted to the infrared radiation layer 106, and then conducted or radiated from the infrared radiation layer 106 to the aerosol generating substrate 103, so that various regions of the aerosol generating substrate 103 are uniformly heated, and the heating rate of the aerosol generating substrate 103 is further increased.

[0099] As illustrated in FIGS. 10-12, this embodiment also provides an aerosol provision system, which comprises the above-mentioned aerosol generation article 10 and an aerosol provision device 20 for accommodating the aerosol generation article 10. The aerosol provision device 20 comprises a housing, a heating module and a battery module 203 arranged inside the housing. The heating module includes a containment chamber 202 and a heating element 204. In embodiments, the containment chamber is a heating chamber. The containment chamber 202 is used for accommodating the aerosol generation article 10. The containment chamber 202 is arranged to accommodate at least a portion of the aerosol generation article 10. In embodiments, the containment chamber 202 is arranged to accommodate all of the aerosol generation article 10. The heating element 204 is used for heating the aerosol generation article 10 received in the containment chamber 202, and the battery module 203 is used for supplying power to the heating element 204 to make the heating element 204 generate heat. Wherein, the heating element 204 generates heat by resistive heating or electromagnetic heating. In embodiments, the heating element 204 comprises a resistive heating element. In embodiments, the heating element 204 comprises a material configured to be heated by a varying magnetic field. In embodiments, the heating element 204 comprises a susceptor.

[0100] In a possible implementation, as shown in FIG. 11 , the heating module comprises a housing 201. The housing 201 constructs the containment chamber 202, and the heating element 204 at least partially enters the containment chamber 202. The heating element 204 is electrically connected to the battery module 203. The heating element 204 generates heat by the resistive method. The shape of the heating element 204 can be, for example, needle- shaped or plate-shaped. When the aerosol generation article 10 is received in the containment chamber 202, the heating element 204 enters the substrate section 101 of the aerosol generation article 10.

[0101] In another possible implementation, as shown in FIG. 12, the heating module comprises a housing 201 , a heating element 204 and an inductor 205. The housing 201 has a heating chamber. The heating element 204 and the inductor 205 are arranged in the heating chamber. The heating element 204 constructs the containment chamber 202, and the inductor 205 is located between the outer wall of the heating element 204 and the inner wall of the housing 201 and is electrically connected to the battery module 203. The heating element 204 is made of an electromagnetic induction material, that is, a material heatable by penetration with a varying magnetic field. In embodiments, the inductor 205 is constructed as a coil arranged around the extractor. The shape of the heating element 204 can be, for example, cylindrical. When the aerosol generation article 10 is received in the containment chamber 202, the inductor 205 is energized to generate an electromagnetic field, and the heating element 204 generates heat to heat the aerosol generation article 10 to generate an aerosol. The inductor 205 is configured to generate a varying magnetic field to heat the heating element.

[0102] Since the infrared radiation element 104 is arranged in the aerosol generating substrate 103 of the aerosol generation article 10, on the basis of the heating element heating the aerosol generation article 10, the infrared radiation element 104 is heated to generate infrared rays, and then the heat is diffused by radiation, which can reduce the temperature difference among various regions of the aerosol generating substrate 103, make the substrate section 101 of the aerosol generation article 10 be uniformly heated, and further improve the taste when the user puffs. At the same time, since the infrared radiation element 104 improves the thermal utilization efficiency and reduces the requirements for the heating temperature and time of the heating element 204, the power consumption of the battery module 203 can be saved.

[0103] The referential terminology "an embodiment," "some embodiments," "example," "specific example," or "some examples" means that specific features, structures, materials, or characteristics described in connection with the embodiment or example are comprised in at least one embodiment or example. The indicative expression of the above 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 way in any one or more embodiments or examples.

[0104] Moreover, the terms "first," "second," etc., are used merely for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the characteristics defined as "first," "second," etc., may explicitly or implicitly comprise at least one such characteristic. In the description of the present application, the term "multiple" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0105] Unless explicitly defined and limited, terms such as "mounting," "connecting," "connection," "fixing," etc., should be understood broadly. For instance, the connection can be a fixed connection or a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary medium, it can be the internal communication of two components or the interaction between two components, unless explicitly defined otherwise. Those skilled in the art can understand the specific meanings of these terms in the context of the application based on the circumstances.

[0106] Although embodiments have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be considered as limiting. Those skilled in the art within the scope of the application can make variations, modifications, replacements, and variations to the above-described embodiments.

Claims

Claims1. An aerosol generating article comprising: an aerosol generating substrate, the aerosol generating substrate configured to form an aerosol under a heating condition; at least one infrared radiation element, arranged within the aerosol generating substrate, configured to generate infrared radiation by receiving heat and to heat the aerosol generating substrate at least by radiation.

2. The aerosol generating article according to claim 1, wherein the infrared radiation element is in a cylindrical, planar, strip-like, globular, or granular shape.

3. The aerosol generating article according to claim 1 or 2, comprising at least two infrared radiation elements arranged within the aerosol generating substrate, configured to generate infrared radiation by receiving heat and to heat the aerosol generating substrate at least by radiation and distributed at intervals along a length direction and / or perpendicular to the length direction of the aerosol generating substrate.

4. The aerosol generating article according to claim 3, wherein the at least two infrared radiation elements are evenly distributed at intervals along the length direction and / or perpendicular to the length direction of the aerosol generating substrate.

5. The aerosol generating article according to any one of claims 1 to 4, wherein the or each infrared radiation element comprises at least one of the following materials: graphene, quartz and crystal.

6. The aerosol generating article according to claim 1 , wherein the or each infrared radiation element has a thermal conductivity of less than 7000W / m*K.

7. The aerosol generating article according to claim 1 , wherein the or each infrared radiation element has a emissivity of less than 1.0.

8. The aerosol generating article according to any of claims 1 to 7, wherein the or each infrared radiation element has a wall thickness of less than 0.5mm.

9. The aerosol generating article according to any one of claims 1 to 8, wherein the or each infrared radiation element comprises: a substrate; andan infrared radiation layer formed on at least a portion of a surface of the substrate.

10. The aerosol generating article according to claim 9, wherein the substrate is made of electromagnetic induction material, wherein the electromagnetic induction material comprises at least one of iron, cobalt, nickel, gadolinium, erbium and their alloys.

11. The aerosol generating article according to claim 9 or 10, wherein the substrate has a maximum working temperature which does not exceed 500° C.

12. The aerosol generating article according to any of claims 9 to 11 , wherein the surface of the substrate is a rough surface.

13. The aerosol generating article according to claim 12, wherein the surface of the substrate is a rough surface obtained through laser texturing treatment or chemical etching treatment.

14. The aerosol generating article according to any of claims 9 to 13, wherein the infrared radiation layer comprises a graphene or ceramic coating.

15. The aerosol generating article according to claim 9, wherein the thermal conductivity of the infrared radiation layer is less than 7000W / m*K.

16. The aerosol generating article according to claim 9, wherein an emissivity of the infrared radiation layer is less than 1.0.

17. The aerosol generating article according to claim 9, wherein a wall thickness of the infrared radiation layer is less than 0.5mm.

18. An aerosol provision system comprising an aerosol provision device and an aerosol generating article according to any of claims 1 to 17, wherein the aerosol provision device comprises: a heating chamber configured to accommodate at least a portion of the aerosol generating article; and a heating element configured to heat the infrared radiation element of the aerosol generating article to cause the infrared heating element to generate infrared radiation and toheat the aerosol generating substrate at least by radiation, when the at least a portion of the aerosol generating article is received in the heating chamber.

19. The aerosol provision system according to claim 18, wherein the heating element comprises at least one of a resistive heating element and a heating element heatable by penetration with a varying magnetic field.

20. The aerosol provision system according to claim 18 or 19, wherein the aerosol provision device comprises an inductor configured to generate a varying electromagnetic field inside the heating chamber to heat the heating element.

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