Multilayer ceramic body and aerosol delivery system

Abstract

Multilayer ceramic body and aerosol delivery system. Embodiments of the present invention disclose a multilayer ceramic body and an aerosol delivery system for an aerosol delivery system. The multilayer ceramic body comprises a stacked arrangement of an oil induction layer and an atomizing layer; at least one of the oil induction layer and the atomizing layer has two or more porous layers; and at least one of the oil induction layer and the atomizing layer is configured to have a difference in pore size and / or porosity. In embodiments of the present invention, the multilayer ceramic body provides better oil locking and oil induction functions. In the stacked arrangement, at least one of the oil induction layer and the atomizing layer has two or more porous layers, which provides a good support for the heating element. Meanwhile, the multilayer arrangement allows the pore size and porosity of the oil induction layer and the atomizing layer to be adjustable. Thus, the ceramic body can be adjusted in terms of atomizing particle size, oil induction rate, aerosol flavor, and other aspects, which can meet different needs and improve the user experience.

Description

Technology Field

[0001] The present invention relates to the field of aerosol delivery technology, and in particular to a multilayer ceramic body and an aerosol delivery system. Background Technology

[0002] The atomizing core used in aerosol delivery systems is a key component of a liquid atomization device. Generally, the atomizing core comprises a heating element and a substrate. The substrate primarily supports the heating element, providing a base surface that stabilizes the heating element in a fixed shape. Additionally, the substrate needs to perform oil locking, oil induction, and atomization evaporation functions. Therefore, the substrate must be able to rapidly induce the e-liquid from the oil tank to the atomization surface, while storing a portion of the e-liquid and ensuring that the e-liquid is replenished at the atomization surface as it evaporates when the heating element is heated.

[0003] To achieve constant resistance and an optimal heating surface, heating elements are shaped differently depending on material requirements. Similarly, the substrate needs to include different support layers, oil locking and oil induction layers, and atomizing layers to meet heating needs. Currently, ceramic atomizing cores still exhibit relatively low overall performance and disadvantages such as low oil induction, susceptibility to dry failure, and insufficient support capacity.

[0004] The present invention aims to solve at least one of the technical problems of the prior art. To this end, the present invention discloses a multilayer ceramic body and an aerosol providing system.

[0005] In a first aspect, the present invention provides a multilayer ceramic body for an aerosol delivery system, wherein the multilayer ceramic body comprises a stacked arrangement of an oil-inducing layer and an atomizing layer; at least one of the oil-inducing layer and the atomizing layer has two or more porous layers; and at least one of the oil-inducing layer and the atomizing layer is configured to have a difference in pore size and / or porosity.

[0006] In one embodiment of the aforementioned multilayer ceramic body, the atomizing layer and the oil-inducing layer are stacked sequentially along one direction. In additional embodiments, the atomizing layer and the oil-inducing layer have the same planar, arc-shaped, or curved shape and are stacked sequentially facing each other. In additional embodiments, the atomizing layer and the oil-inducing layer are columnar and coaxial and are stacked continuously along the radial direction.

[0007] In one embodiment of the aforementioned multilayer ceramic body, the atomizing layer comprises at least two porous atomizing sublayers stacked in sequence, wherein the porous atomizing sublayers have the same pore size and porosity; and the oil inducing layer comprises at least two porous oil inducing sublayers stacked in sequence, wherein the porous oil inducing sublayers have the same pore size and porosity.

[0008] In one embodiment of the aforementioned multilayer ceramic body, the pore size of the porous atomizing sublayers and / or porous oil-inducing sublayers is 40 μm or less.

[0009] In one embodiment of the aforementioned multilayer ceramic body, the pore size of the porous atomizing sublayers and / or porous oil-inducing sublayers is 10 μm or more.

[0010] In one embodiment of the aforementioned multilayer ceramic body, the porosity of the porous atomizing sublayers and / or porous oil-inducing sublayers is 65% or less.

[0011] In one embodiment of the aforementioned multilayer ceramic body, the porosity of the porous atomizing sublayers and / or porous oil-inducing sublayers is 45% or more.

[0012] In one embodiment of the aforementioned multilayer ceramic body, the pore size of the atomizing layer and the oil-inducing layer is the same, but the porosity is different. In additional embodiments, the porosity of the atomizing layer is lower than the porosity of the oil-inducing layer. In additional embodiments, the difference in porosity between the atomizing layer and the oil-inducing layer is within the range of 20% or less. In additional embodiments, the atomizing layer comprises at least two porous atomizing sublayers stacked in sequence. In additional embodiments, the porosity of the porous atomizing sublayers closer to the oil-inducing layer is higher than the porosity of the porous atomizing sublayers further away from the oil-inducing layer. In additional embodiments, the difference in porosity between the porous atomizing sublayers closer to the oil-inducing layer and the porous atomizing sublayers further away from the oil-inducing layer is within the range of 20% or less. In additional embodiments, the porosity of any two layers of porous atomizing sublayers is the same. In additional embodiments, the oil-inducing layer comprises at least two porous oil-inducing sublayers. In additional embodiments, the porosity of the porous oil-inducing sublayers near the atomizing layer is lower than the porosity of the porous oil-inducing sublayers further from the atomizing layer. In additional embodiments, the difference in porosity between the porous oil-inducing sublayers near the atomizing layer and the porous oil-inducing sublayers further from the atomizing layer is within the range of 20% or less. In additional embodiments, the porosity of any two layers of porous oil-inducing sublayers is the same.

[0013] In one embodiment of the aforementioned multilayer ceramic body, the porosity of the atomizing layer and the oil-inducing layer are the same, and the pore sizes are different. In additional embodiments, the pore size of the atomizing layer is smaller than the pore size of the oil-inducing layer. In additional embodiments, the difference in pore size between the atomizing layer and the oil-inducing layer is within the range of 10 μm or less. In additional embodiments, the atomizing layer comprises at least two porous atomizing sublayers. In additional embodiments, the pore size of the porous atomizing sublayers closer to the oil-inducing layer is greater than or equal to the pore size of the porous atomizing sublayers further from the oil-inducing layer. In additional embodiments, the difference in pore size between any two layers of porous atomizing sublayers is within the range of 10 μm or less. In additional embodiments, the pore size of any two layers of porous atomizing sublayers is the same. In additional embodiments, the oil-inducing layer comprises at least two layers of porous oil-inducing sublayers. In additional embodiments, the pore size of the porous oil-inducing sublayers closer to the atomizing layer is less than or equal to the pore size of the porous oil-inducing sublayers further from the atomizing layer. In additional embodiments, the difference between any two layers of porous oil-inducing sublayers is within the range of 10 μm or less. In additional embodiments, the pore size of any two layers of porous oil-inducing sublayers is the same.

[0014] In one embodiment of the multilayer ceramic body described above, the porosity and pore size of the atomizing layer and the oil-inducing layer are both different. In additional embodiments, the porosity of the atomizing layer is lower than the porosity of the oil-inducing layer, and the pore size of the oil-inducing layer is larger than the pore size of the atomizing layer. In additional embodiments, the difference in porosity between the atomizing layer and the oil-inducing layer is within the range of 20% or less; and the difference in pore size between the atomizing layer and the oil-inducing layer is within the range of 10 μm or less. In additional embodiments, the atomizing layer comprises at least two porous atomizing sublayers. In additional embodiments, the porosity of the porous atomizing sublayers closer to the oil-inducing layer is greater than the porosity of the porous atomizing sublayers further away from the oil-inducing layer, and the pore size of the porous atomizing sublayers closer to the oil-inducing layer is greater than the pore size of the porous atomizing sublayers further away from the oil-inducing layer. In additional embodiments, the difference in porosity between porous atomizing sublayers near the oil-inducing layer and porous atomizing sublayers further from the oil-inducing layer is within the range of 20% or less; and the difference in pore size between porous atomizing sublayers near the oil-inducing layer and porous atomizing sublayers further from the oil-inducing layer is within the range of 10 μm or less. In additional embodiments, the oil-inducing layer comprises at least two porous oil-inducing sublayers. In additional embodiments, the porosity of the porous oil-inducing sublayers near the atomizing layer is less than or equal to the porosity of the porous oil-inducing sublayers further from the atomizing layer, and the pore size of the porous oil-inducing sublayers near the atomizing layer is less than or equal to the pore size of the porous oil-inducing sublayers further from the atomizing layer.In additional embodiments, the difference in porosity between porous oil-inducing sublayers close to the atomizing layer and porous oil-inducing sublayers further from the atomizing layer is within the range of 20% or less; and the difference in pore size between porous oil-inducing sublayers close to the atomizing layer and porous oil-inducing sublayers further from the atomizing layer is within the range of 10 μm or less.

[0015] In one embodiment of the aforementioned multilayer ceramic body, the thickness of the atomizing layer is 2 mm or less, the thickness of the oil-inducing layer is 2 mm or less, and the thickness of the multilayer composite ceramic body is 4 mm or less. In additional embodiments, the atomizing layer comprises at least two porous atomizing sublayers, and the thickness of each layer of the porous atomizing sublayers is 0.5 mm or less. In additional embodiments, each layer of the porous atomizing sublayers has a thickness of 0.2 mm or less and 0.05 mm or more. In additional embodiments, each layer of the porous atomizing sublayers has a thickness of 0.3 mm or less and 0.15 mm or more. In additional embodiments, each layer of the porous atomizing sublayers has a thickness of 0.5 mm or less and 0.2 mm or more. In additional embodiments, the oil-inducing layer comprises at least two porous oil-inducing sublayers, and the thickness of each layer of the porous oil-inducing sublayers is 0.5 mm or less. In additional embodiments, each layer of the porous oil-inducing sublayers has a thickness of 0.2 mm or less and 0.05 mm or more. In additional embodiments, each layer of the porous oil-inducing sublayers has a thickness of 0.3 mm or less and 0.15 mm or more. In additional embodiments, each layer of the porous oil-inducing sublayers has a thickness of 0.5 mm or less and 0.2 mm or more. In additional embodiments, the thickness of the multilayer composite ceramic body is 3 mm or less and 2.5 mm or more.

[0016] In one embodiment of the aforementioned multilayer ceramic body, the thickness of the multilayer composite ceramic body is 1.5 mm or less and 0.8 mm or more.

[0017] In one embodiment of the aforementioned multilayer ceramic body, it includes a heating element, the heating element being positioned on the surface of an atomizing layer facing away from the oil induction layer. In additional embodiments, the heating element is manufactured using thick film printing technology or vacuum deposition technology.

[0018] In one embodiment of the aforementioned multilayer ceramic body, it includes a heating element, and the heating element is embedded within the atomizing layer. In additional embodiments, the heating element is embedded within the atomizing layer through a pre-embedding method. In additional embodiments, the heating element is a ceramic electric heating element.

[0019] In one embodiment of the aforementioned multilayer ceramic body, the oil induction layer and the atomization layer are formed through a tape casting method.

[0020] In one embodiment of the aforementioned multilayer ceramic body, two or more porous layers of an oil-inducing layer and / or atomizing layer are laminated and then sintered to form a uniform layer, and the physical boundaries between the layers are removed and / or; the oil-inducing layer and the atomizing layer are laminated and then sintered to form a uniform layer, and the physical boundaries between the layers are removed.

[0021] In a second aspect, the present invention discloses an aerosol providing system comprising any one of the aforementioned multilayer ceramic bodies.

[0022] In one or more embodiments of the present invention, at least one of the oil induction layer and the atomizing layer in the laminated arrangement has two or more porous layers, which provide good support for the heating element. The multilayer ceramic body provides better oil locking and oil induction functions. Meanwhile, the multilayer arrangement allows the parameters of the oil induction layer and the atomizing layer to be configured differently, thereby realizing a number of possible configurations to achieve different effects. Specifically, by adjusting at least one parameter of the pore size and porosity of the oil induction layer and the atomizing layer, the ceramic body can be adjusted in terms of atomizing particle size, oil induction rate, aerosol flavor, and other aspects, which can satisfy different needs and improve the user experience.

[0001] Additional aspects and advantages of the invention will be described in part in the following description, some of which will become apparent from the following description and others of which will be known through the practice of the invention. The invention includes any combination of two, three, four or more of the embodiments described above, as well as any combination of two, three, four or more features or elements described in this disclosure, regardless of whether such features or elements are explicitly combined in the description of specific embodiments of this specification. This disclosure is intended to be read in its entirety, and any separable features or elements of the disclosed invention should be understood as intended to be combineable in any of the various aspects and embodiments thereof, unless the context otherwise clearly indicates otherwise. Brief explanation of the drawing

[0023] With reference to the accompanying drawings, the disclosed content of the present invention will be more easily understood. Those skilled in the art will readily understand that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. Additionally, similar numbers in the drawings are used to denote similar components, among which

[0024] FIG. 1 is a schematic diagram of the structure of a multilayer ceramic body in one embodiment;

[0025] FIG. 2 is a schematic diagram of the structure of a multilayer ceramic body in another embodiment;

[0026] FIGS. 3 to 6 are schematic diagrams of the layered structure of a multilayer ceramic body in another embodiment;

[0027] FIGS. 7 to 9 are schematic diagrams of the layered structure of a multilayer ceramic body in another embodiment;

[0028] FIGS. 10 and FIGS. 11 are schematic diagrams of the layered structure of a multilayer ceramic body in another embodiment. Specific details for implementing the invention details

[0029] Some embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art will understand that these embodiments are intended only to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0030] As used in this specification and claims, the singular forms “a,” “an,” and “the” include plural references unless the context otherwise clearly indicates. In this specification, unless otherwise specified, the term “about” modifying the amount of a component refers to a variation in numerical quantity, which may occur, for example, through typical measurement and liquid handling procedures used in the real world to prepare concentrates or solutions for use; through unintended errors in such procedures; through differences in the manufacture, source, or purity of the components used to prepare formulations or perform methods; and similar things. The term “about” also includes different amounts due to different equilibrium conditions of formulations or compositions produced from a particular initial mixture. Regardless of whether they are modified by the term “about,” the claims include equivalents for quantities.

[0031] As used herein, the term “delivery system” is intended to include systems that deliver at least one substance to a user upon use, and includes the following:

[0032] Combustible aerosol delivery systems, such as cigarettes, cigarillos, cigars, and tobacco for pipes or roll-your-own or make-your-own cigarettes (regardless of whether they are based on tobacco, tobacco derivatives, puffed tobacco, reconstituted tobacco, tobacco substitutes, or other smokeable materials);

[0033] Non-combustible aerosol delivery systems that release compounds from aerosol-generating materials without burning the aerosol-generating materials, such as electronic cigarettes, tobacco heating products, and hybrid systems that generate aerosols using a combination of aerosol-generating materials; and

[0034] Aerosol-free delivery systems that deliver at least one substance to a user orally, nasally, transdermally, or otherwise without forming an aerosol, include, but are not limited to, articles comprising lozenges, gums, patches, inhalable powders, and oral products such as oral tobacco comprising snus or wet snuff, wherein at least one substance may or may not contain nicotine.

[0035] According to the present disclosure, a “combustible” aerosol delivery system is a system in which a constituent aerosol generating material (or its component) of the aerosol delivery system is combusted or incinerated during use to facilitate the delivery of at least one substance to a user.

[0036] In some embodiments, the delivery system is a combustible aerosol providing system selected from the group consisting of, for example, cigarettes, cigarillos, and cigars.

[0037] In some embodiments, the present disclosure relates to a component for use in a combustible aerosol delivery system, such as an aerosol modifier-releasing component such as a filter, filter rod, filter segment, tobacco rod, spill, capsule, seal, or bead, or a paper such as a plug wrap, tipping paper, or cigarette paper.

[0038] According to the present disclosure, a "non-combustible" aerosol delivery system is a system in which the constituent aerosol generating material (or its components) of the aerosol delivery system is not combusted or incinerated to facilitate the delivery of at least one substance to a user.

[0039] In some embodiments, the delivery system is a non-combustible aerosol delivery system, such as an electric-driven non-combustible aerosol delivery system.

[0040] In some embodiments, the non-combustible aerosol delivery system is an electronic cigarette, also known as a vaping device or an electronic nicotine delivery system (END), but it is noted that the presence of nicotine in the aerosol generating material is not a requirement.

[0041] In some embodiments, the non-combustible aerosol supply system is a heating system for aerosol-generating materials and is also known as a heating non-combustible system. An example of such a system is a cigarette heating system.

[0042] In some embodiments, the non-combustible aerosol providing system is a hybrid system that generates an aerosol using a combination of aerosol generating materials, one or more of which may be heated. Each of the aerosol generating materials may be in the form of, for example, 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 include, for example, tobacco or non-tobacco products.

[0043] Generally, a non-combustible aerosol delivery system may include a non-combustible aerosol delivery device and consumables for use with the non-combustible aerosol delivery device.

[0044] In some embodiments, the present disclosure relates to consumables comprising an aerosol-generating material and configured to be used with non-combustible aerosol-providing devices. Such consumables are referred to as articles throughout the present disclosure.

[0045] In some embodiments, a non-combustible aerosol providing system, such as its non-combustible aerosol providing device, may include a power source and a controller. The power source may be, for example, an electric power source or a heating power source. In some embodiments, the heating power source comprises a carbon substrate, and the carbon substrate may distribute power in the form of heat to an aerosol generating material or heat transfer material that is close to the heating power source when energy is supplied.

[0046] In some embodiments, the non-combustible aerosol delivery system may include an area for receiving consumables, an aerosol generator, an aerosol generating area, a housing, a mouthpiece, a filter, and / or an aerosol modifier.

[0047] In some embodiments, consumables for use with a non-combustible aerosol providing device may include an aerosol generating material, an aerosol generating material storage area, an aerosol generating material delivery component, an aerosol generator, an aerosol generating area, a housing, a wrapper, a filter, a mouthpiece, and / or an aerosol modifier.

[0048] 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 otherwise without forming an aerosol, and includes, but is not limited to, articles including lozenges, gums, patches, inhalable powders, and oral products such as oral tobacco including snus or wet snuff, wherein at least one substance may or may not include nicotine.

[0049] In some embodiments, the material to be delivered may be an aerosol-generating material or a material not intended to be aerosolized. Where appropriate, either material may include one or more active ingredients, one or more flavors, one or more aerosol-forming materials and / or one or more other functional materials.

[0050] In some embodiments, the material to be delivered comprises an active substance. As used herein, the active substance may be a physiologically active material that is a material intended to achieve or enhance a physiological response. The active substance may be selected from, for example, nutraceuticals, nootropics, and psychotropic substances. The active substance may occur naturally or be obtained synthetically. The active substance may include, for example, nicotine, caffeine, taurine, theine, vitamins such as B6 or B12 or C, melatonin, cannabinoids, or components, derivatives, or combinations thereof. The active substance may include one or more components, derivatives, or extracts of tobacco, cannabis, or other botanicals.

[0051] In some embodiments, the active substance comprises nicotine. In some embodiments, the active substance comprises caffeine, melatonin, or vitamin B12.

[0052] As mentioned in the present specification, the active substance may include or be derived from one or more components, derivatives, or extracts of cannabis, such as one or more cannabinoids or terpenes.

[0053] As mentioned herein, the active substance may comprise or be derived from one or more botanicals or their components, derivatives, or extracts. As used herein, the term “botanical” includes, but is not limited to, any material derived from plants, including extracts, leaves, bark, fibers, stems, roots, seeds, flowers, fruits, pollen, husks, outer layers, or similar substances. Alternatively, the material may comprise an active compound naturally present in the botanical that is obtained synthetically. The material may be in the form of a liquid, gas, solid, powder, dust, crushed particles, granules, pellets, pieces, strips, sheets, or similar substances.

[0054] Examples of botanicals include tobacco, eucalyptus, star anise, hemp, cocoa, cannabis, fennel, lemongrass, peppermint, spearmint, rooibos, chamomile, flax, ginger, ginkgo, hazelnut, hibiscus, bay leaf, licorice, matcha, mate, orange peel, papaya, rose, sage, tea such as green or black tea, thyme, cloves, cinnamon, coffee, anise seeds (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, mache, damien, marjoram, olive, lemon balm, and lemon There are basil, chives, carbi, verbena, tarragon, geranium, mulberry, ginseng, theanine, theacrine, maca, ashwagandha, damiana, guarana, chlorophyll, baobab, or any combination thereof. Mint may be selected from the following mint varieties: Mentha Arventis, Mentha cv, Mentha niliaca, Mentha piperita, Mentha piperita citrata cv, Mentha piperita cv, Mentha spicata crispa, Mentha cardifolia, Memtha longifolia, Mentha suaveolens variegata, Mentha pulegium, Mentha spicata cv, and Mentha suaveolens.

[0055] In some embodiments, the active substance comprises or is derived from one or more botanicals or their components, derivatives, or extracts, and the botanical is tobacco. In some embodiments, the active substance comprises or is derived from one or more botanicals or their components, derivatives, or extracts, and the botanical is selected from eucalyptus, star anise, cocoa, and hemp.

[0056] In some embodiments, the active substance comprises or is derived from one or more botanicals or their components, derivatives, or extracts, and the botanical is selected from rooibos and fennel.

[0057] In some embodiments, the material to be delivered includes flavors. As used herein, the terms “flavor” and “flavoring agent” refer to materials that may be used to produce a desired taste, aroma, or other somatosensory sensation in a product for adult consumers, where permitted by local regulations. These are naturally occurring flavoring ingredients, botanicals, extracts of botanicals, synthetically obtained ingredients, or combinations thereof (e.g., tobacco, cannabis, licorice, hydrangea, eugenol, Japanese white magnolia leaves, chamomile, fenugreek, clove, maple, matcha, menthol, Japanese mint, anise seeds (anise), cinnamon, turmeric, Indian spices, Asian spices, herbs, wintergreen, cherry, berry, red berry, cranberry, peach, apple, orange, mango, clementine, lemon, lime, tropical fruits, papaya, rhubarb, grape, durian, dragon fruit, cucumber, blueberry, mulberry, citrus fruits, Drambuie, bourbon, Scotch, whisky, gin, tequila, rum, spearmint, peppermint, lavender, aloe vera, cardamom, celery, cascarilla, nutmeg, sandalwood, bergamot, Geranium, khat, nasoir, 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, pimento, ginger, coriander, coffee, hemp, mint oil from any species of the genus Mentha, eucalyptus, star anise, cocoa, lemongrass, rooibos, flax, ginkgo, hazel, hibiscus, bay leaf, mate, orange peel, rose, tea such as green 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, mache, damien, marjoram, olive, lemon balm, lemon basil, Chives, carbur, verbena, tarragon, limonene, thymol, camphene), flavor enhancers, bitter taste receptor blockers,They may include sensory receptor site activators or stimulants, sugars and / or sugar substitutes (e.g., sucralose, acesulfame potassium, aspartame, saccharin, cyclamates, lactose, sucrose, glucose, fructose, sorbitol, or mannitol), and other additives, such as charcoal, chlorophyll, minerals, botanicals, or breath fresheners. These may be imitation, synthetic, or natural ingredients or blends thereof. They may be in any suitable form, e.g., liquid such as oil, solid such as powder, or gas.

[0058] In some embodiments, the flavor comprises menthol, spearmint, and / or peppermint. In some embodiments, the flavor comprises flavor components of cucumber, blueberry, citrus fruits, and / or red berry. In some embodiments, the flavor comprises eugenol. In some embodiments, the flavor comprises flavor components extracted from tobacco. In some embodiments, the flavor comprises flavor components extracted from cannabis.

[0059] In some embodiments, the flavor may include a sensory agent intended to achieve a somatosensory sensation, which is typically chemically induced and perceived by stimulation of the fifth cranial nerve (trigeminal nerve) in addition to or instead of the flavor or taste nerves, and may include agents that provide a heating, cooling, tingling, or numbing effect. A suitable heating agent may be vanillyl ethyl ether, but is not limited thereto, and a suitable cooling agent may be eucalyptol, WS-3, but is not limited thereto.

[0060] An aerosol-generating material is a material capable of generating an aerosol when, for example, heated, irradiated, or supplied with energy in any other way. An aerosol-generating material may be in the form of a solid, liquid, or gel, for example, which may or may not contain active substances and / or flavoring agents. In some embodiments, the aerosol-generating material may include an "amorphous solid," which may alternatively be referred to as a "mono-solid" (i.e., non-fibrous). In some embodiments, the amorphous solid may be a dried gel. An amorphous solid is a solid material capable of holding some fluid, such as a liquid, within it. In some embodiments, the aerosol-generating material may include, for example, about 50 wt%, 60 wt%, or 70 wt% of an amorphous solid, or about 90 wt%, 95 wt%, or 100 wt% of an amorphous solid.

[0061] The aerosol-generating material may include one or more active substances and / or flavors, one or more aerosol-forming material materials, and optionally one or more other functional materials.

[0062] The aerosol-forming agent material may include one or more components capable of forming an aerosol. In some embodiments, the aerosol-forming agent material may include one or more of glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butylene glycol, erythritol, meso-erythritol, ethyl vanillate, ethyl laurate, diethyl suberate, triethyl citrate, triacetin, diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate.

[0063] One or more other functional materials may include one or more of pH adjusters, colorants, preservatives, binders, fillers, stabilizers, and / or antioxidants.

[0064] The material may be present on or within a support to form a substrate. The support may be, for example, paper, card, cardboard, paperboard, reconstructed material, plastic material, ceramic material, composite material, glass, metal, or metal alloy, or may include these. In some embodiments, the support includes a susceptor. In some embodiments, the susceptor is embedded within the material. In some alternative embodiments, the susceptor is on one or both sides of the material.

[0065] A consumable is an article comprising or composed of an aerosol-generating material, intended to be consumed in whole or in part during use by a user. The consumable may include one or more other components, such as an aerosol-generating material storage area, an aerosol-generating material delivery component, an aerosol-generating area, a housing, a wrapper, a mouthpiece, a filter, and / or an aerosol modifier. The consumable may also include an aerosol generator, such as a heater that emits heat to cause the aerosol-generating material to generate an aerosol upon use. The heater may include, for example, a combustible material, a material heatable by electrical conduction, or a susceptor.

[0066] A susceptor is a material capable of being heated by the penetration of a changing magnetic field, such as an alternating magnetic field. The susceptor may be an electrically conductive material, so that the penetration of a changing magnetic field causes induction heating of the heating material. The heating material may be a magnetic material, so that the penetration of a changing magnetic field causes magnetic hysteresis heating of the heating material. The susceptor may be electrically conductive and magnetic, so that the susceptor can be heated by both heating mechanisms. A device configured to generate a changing magnetic field is referred to herein as a magnetic field generator.

[0067] An aerosol modifier is a substance typically located downstream of the aerosol generation region and is configured to modify the generated aerosol by, for example, altering the taste, flavor, acidity, or other properties of the aerosol. The aerosol modifier may be provided to an aerosol modifier release component operable to selectively release the aerosol modifier. The aerosol modifier may be, for example, an additive or an adsorbent. The aerosol modifier may include, for example, one or more of flavoring agents, coloring agents, water, and carbon adsorbents. The aerosol modifier may be, for example, a solid, a liquid, or a gel. The aerosol modifier may be in the form of a powder, thread, or granule. The aerosol modifier may not include filtration material.

[0068] An aerosol generator is a device configured to generate an aerosol from an aerosol generating material. In some embodiments, the aerosol generator is a heater configured to apply thermal energy to the aerosol generating material to release one or more volatile substances from the aerosol generating material to form an aerosol. In some embodiments, the aerosol generator is configured to generate an aerosol from the aerosol generating material without heating. For example, the aerosol generator may be configured to apply one or more of vibration, increased pressure, or electrostatic energy to the aerosol generating material.

[0069] The present disclosure relates to aerosol delivery systems (which may also be referred to as vapor delivery systems), such as atomizers or e-cigarettes. Throughout the following description, the terms "e-cigarette" or "electronic cigarette" may be used from time to time, but it will be understood that these terms may be used interchangeably with aerosol delivery systems / devices and electronic aerosol delivery systems / devices. Furthermore, as is common in the art, the terms "aerosol" and "vapor," and related terms, such as "vaporize," "volatilize," and "aerosolize," may generally be used interchangeably.

[0070] Aerosol delivery systems (e-cigarettes) often, though not always, comprise a modular assembly that includes a reusable device part and a replaceable (disposable / consumable) cartridge part. Often, the replaceable cartridge part includes an aerosol generating material and a vaporizer (collectively referred to as a "cartomizer"), and the reusable device part will include a power supply (e.g., a rechargeable power source) and control circuitry. It will be understood that these different parts may include additional elements depending on their function. For example, the reusable device part will often include a user interface for receiving user input and displaying operating status characteristics, and the replaceable cartridge device part will include a temperature sensor to assist with temperature control in some cases. The cartridges are electrically and mechanically coupled to the control unit for use, using, for example, screw threads, bayonets, or magnetic couplings with appropriately arranged electrical contacts. When the aerosol generating material in the cartridge is depleted, or when the user wishes to switch to a different cartridge with a different aerosol generating material, the cartridge can be removed from the reusable part and a replacement cartridge attached in its place. Systems and devices that follow this type of two-part modular configuration can generally be referred to as two-part systems / devices.

[0071] Electronic cigarettes generally have an elongated shape. To provide a specific example, certain embodiments of the present disclosure will be considered to include this type of generally elongated two-part system employing disposable cartridges. However, it will be understood that the basic principles described herein may be equally applied to other general shapes based on different configurations, e.g., single-part systems or modular systems comprising two or more parts, refillable devices, and single-use disposables, as well as, e.g., so-called box-mode high-performance devices generally having a more boxy shape. More generally, certain embodiments of the present disclosure are based on aerosol delivery systems operatively configured to provide functions according to the principles described herein, and it will be understood that structural aspects of systems configured to provide functions according to certain embodiments of the present disclosure are of no primary importance.

[0072] Referring to FIG. 1, one embodiment of the present invention provides a multilayer composite ceramic body (10) for an aerosol delivery system, comprising a stacked arrangement of an oil-inducing layer (11) and an atomizing layer (12); at least one of the oil-inducing layer (11) and the atomizing layer (12) has two or more porous layers; the oil-inducing layer has a first surface (11a) facing away from the atomizing layer, and the atomizing layer (12) has a second surface (12a) facing away from the oil-inducing layer. At least one of the oil-inducing layer (11) and the atomizing layer (12) is configured to have a difference in pore size and / or porosity.

[0073] The terms “pore size” and “porosity” are used throughout this application, and in all cases, a person skilled in the art will understand that these parameters may be measured by methods of general knowledge in the art. For example, pore size and / or porosity may be measured by scanning electron microscopy (SEM) and image analysis (e.g., using open-source image analysis software such as ImageJ; Java-based image processing programs) following the conductive treatment of each sample (e.g., gold sputtering). https: / / imagej.net / It can be measured by ). Standard conditions are used for conductivity treatment and SEM. For example, the sample may be gold sputtered so that the thickness of the gold coating is in the range of 5 to 20 nanometers. The coated sample is then subjected to vacuum conditions (e.g., 10 -5 to 10 -7 It can be placed in a scanning electron microscope (e.g., field emission scanning electron microscope) under Torr. The operating distance can be set to 5 to 10 mm, and the acceleration voltage can be 1 to 30 kV. The obtained image can then be analyzed using open source image analysis software such as ImageJ to determine pore size and porosity.

[0074] In one embodiment of the present invention, at least one of the oil induction layer (11) and the atomization layer (12) is configured to have a difference in pore size and / or porosity, which includes the following cases:

[0075] The oil induction layer (11) is set as a multilayer structure, wherein at least one of the parameters of pore size or porosity differs between at least two of the layers;

[0076] The atomizing layer (12) is set up as a multilayer structure, wherein at least one of the parameters of pore size or porosity differs between at least two of the layers;

[0077] The oil induction layer (11) and the atomizing layer (12) are configured to have at least one of different parameters in terms of pore size or porosity. If at least one of the atomizing layer (12) or the oil induction layer (11) is a multilayer structure, at least one of the parameters (pore size or porosity) of the oil induction layer (11) and the atomizing layer (12) is different, and this includes a configuration in which at least one layer of the oil induction layer (11) and at least one layer of the atomizing layer (12) have different pore sizes or porosities. This may also include a configuration in which all layers of the oil induction layer (11) and all layers of the atomizing layer (12) are configured to have at least one different parameter in terms of pore size or porosity.

[0078] In the above embodiment of the present invention, at least one of the laminated oil induction layer and the atomizing layer has two or more porous layers and provides good support and load-bearing capacity to the heating element. At the same time, oil locking and oil induction functions of the multilayer ceramic body are achieved. Meanwhile, the multilayer arrangement allows the parameters of the oil induction layer and the atomizing layer to be configured differently, thereby realizing a number of possible configurations to achieve different effects. Specifically, by adjusting at least one parameter among the pore size and porosity of the oil induction layer and the atomizing layer, the ceramic body can be controlled in terms of atomizing particle size, oil induction rate, aerosol flavor, and other aspects, which can satisfy different needs and improve the user experience.

[0079] In the aerosol delivery system, the oil induction layer (11) is located closer to the e-liquid phase than the atomizing layer (12), the e-liquid phase is transferred to the atomizing layer (12) through the oil induction layer (11), and heating and atomization are performed on the side of the atomizing layer (12).

[0080] At this time, the atomizing layer (12) and the oil induction layer (11) may be stacked sequentially in one direction. It should be noted that the multilayer ceramic body (10) may be manufactured in various shapes as needed. The atomizing layer (12) and the oil induction layer (11) may have the same planar, arc-shaped, or curved shape and may be stacked sequentially facing each other; alternatively, as shown in FIG. 1, the atomizing layer (12) and the oil induction layer (11) may be columnar, coaxial, and stacked continuously along the X direction.

[0081] Based on the above embodiments, in some embodiments, referring to FIG. 2, the multilayer ceramic body (10) comprises an oil induction layer (11), an atomizing layer (12), and a heating element (13) stacked in order along the X direction. The oil induction layer (11) has a first surface (11a) in contact with the e-liquid phase, while the atomizing layer (12) has a second surface (12a) facing away from the oil induction layer (11), and the heating element (13) is located on the second surface (12a). At least one or both of the oil induction layer (11) and the atomizing layer (12) may have a multilayer porous structure. As shown in FIG. 2, the oil induction layer (11) comprises at least two porous oil induction sublayers (111) and (112) stacked in order, having the same pore size and porosity. The atomizing layer (12) comprises at least two porous atomizing sublayers (121) and (122) stacked in sequence, having the same pore size and porosity. This structure can be implemented through a simple process, thereby reducing process complexity and manufacturing costs.

[0082] Preferably, the pore size of the porous oil-inducing sublayers (111) and (112) is 40 μm or less; additionally, the pore size of the porous oil-inducing sublayers (111) and (112) is 10 μm or more. The porosity of the porous oil-inducing sublayers (111) and (112) is 65% or less, and also 45% or more.

[0083] Preferably, the pore size of the porous atomizing sublayers (121) and (122) is 40 μm or less, and the pore size is 10 μm or more. The porosity of the porous atomizing sublayers (121) and (122) is 65% or less, and is 45% or more.

[0084] In some embodiments, the present disclosure relates to a multilayer ceramic body (10) comprising an oil induction layer (11), an atomizing layer (12), and a heating element (13) stacked sequentially along the X direction. The oil induction layer (11) has a first surface (11a) in contact with the e-liquid phase, the atomizing layer (12) has a second surface (12a) facing away from the oil induction layer (11), and the heating element (13) is located on the second surface (12a). The pore sizes of the atomizing layer (12) and the oil induction layer (11) are the same, but the porosity is different. The porosity of the atomizing layer (12) is lower than the porosity of the oil induction layer (11).

[0085] Preferably, the difference in porosity between the atomizing layer (12) and the oil-inducing layer (11) is within the range of 20% or less.

[0086] In one embodiment, as illustrated in FIG. 3, the pore sizes of the atomizing layer (12) and the oil-inducing layer (11) are the same; the atomizing layer (12) comprises at least two porous atomizing sublayers (121) and (122) stacked in order along the X direction. The porosity of the porous atomizing sublayer (121) closer to the oil-inducing layer (11) is higher than the porosity of the porous atomizing sublayer (122) further away from the oil-inducing layer (11).

[0087] Preferably, the difference in porosity between porous atomizing sublayers (121) close to the oil-inducing layer (11) and porous atomizing sublayers (122) further away from the oil-inducing layer (11) is within the range of 20% or less.

[0088] In another embodiment, as shown in FIG. 4, unlike the embodiment shown in FIG. 3, the porosity of the porous atomizing sublayers (121) near the oil-inducing layer (11) is the same as the porosity of the porous atomizing sublayers (122) further away from the oil-inducing layer (11).

[0089] In another embodiment, as illustrated in FIG. 5, the pore sizes of the atomizing layer (12) and the oil induction layer (11) are the same. The oil induction layer (11) comprises at least two porous oil induction sublayers (111) and (112) stacked in order along the X direction. The porosity of the porous oil induction sublayers (112) closer to the atomizing layer (12) is lower than the porosity of the porous oil induction sublayers (111) further away from the atomizing layer (12).

[0090] Preferably, the difference in porosity between the porous oil-inducing sublayers (112) near the atomizing layer (12) and the porous oil-inducing sublayers (111) further away from the atomizing layer (12) is within the range of 20% or less.

[0091] In another embodiment, as shown in FIG. 6, unlike the embodiment shown in FIG. 5, the pore size and porosity of the porous oil-induced sublayers (111) and (112) are the same.

[0092] In the above embodiments, the pore sizes of the oil induction layer (11) and the atomizing layer (12) are the same, but the porosity is different, and this functions as a configuration for achieving various atomizing effects. Based on this configuration, multiple oil induction sublayers within the oil induction layer (11) may be set to the same or different values ​​for one of the parameters of pore size or porosity. Similarly, multiple atomizing sublayers within the atomizing layer (12) may be configured to the same or different values ​​for one of the parameters of pore size or porosity. This approach allows for more adjustable configurations to achieve a wider variety of atomizing effects, thereby satisfying more needs.

[0093] In addition, if the atomizing layer and / or the oil induction layer includes at least one porous layer, the function of providing good support and load support to the heating element can be achieved with only the atomizing layer and the oil induction layer.

[0094] In some embodiments, the present disclosure relates to a multilayer ceramic body (10) comprising an oil induction layer (11), an atomizing layer (12), and a heating element (13) stacked sequentially along the X direction. The oil induction layer (11) has a first surface (11a) in contact with an e-liquid phase, the atomizing layer (12) has a second surface (12a) facing away from the oil induction layer (11), and the heating element (13) is located on the second surface (12a). The porosity of the atomizing layer (12) and the oil induction layer (11) is the same, but the pore sizes are different, wherein the pore size of the atomizing layer (12) is smaller than the pore size of the oil induction layer (11).

[0095] Preferably, the difference in pore size between the atomizing layer (12) and the oil induction layer (11) is within the range of 10 μm or less.

[0096] In one embodiment, as shown in FIG. 7, the porosity of the atomizing layer (12) and the oil-inducing layer (11) is the same. The pore size of the porous atomizing sublayers (121) near the oil-inducing layer (11) is greater than the pore size of the porous atomizing sublayers (122) further away from the oil-inducing layer (11).

[0097] Preferably, the difference in pore size between any two layers of porous atomizing sublayers is within the range of 10 μm or less.

[0098] In one embodiment, as shown in FIG. 8, unlike FIG. 7, the pore sizes of any two layers of porous atomizing sublayers are the same. For example, the pore sizes of porous atomizing sublayers (121) and (122) are the same.

[0099] In another embodiment, as illustrated in FIG. 9, the oil induction layer (11) comprises at least two porous oil induction sublayers (111) and (112) stacked along the X direction; the pore size of the porous oil induction sublayer (112) closer to the atomizing layer (12) is smaller than the pore size of the porous oil induction sublayer (111) further away from the atomizing layer (12).

[0100] Preferably, the difference between any two layers of porous oil-induced sublayers (e.g., (111) and (112)) is within the range of 10 μm or less.

[0101] In another embodiment, as shown in FIG. 8, unlike the embodiment shown in FIG. 9, the pore sizes of any two layers of porous oil-induced sublayers (e.g., (111) and (112)) are the same.

[0102] In the above embodiment, the pore sizes of the oil induction layer (11) and the atomization layer (12) are different, but the porosity is the same. This configuration is a method for achieving different atomization effects. Based on this configuration, a plurality of oil induction sublayers of the oil induction layer (11) may be set to be the same or different with respect to pore size or porosity.

[0103] Likewise, multiple atomizing sublayers of the atomizing layer (12) can be set to be the same or different with respect to pore size or porosity, allowing for more configurable options to achieve a wider variety of atomizing effects and thus meeting more needs. Additionally, the atomizing layer and / or oil-inducing layer may have at least one porous layer, and the atomizing layer and oil-inducing layer alone may achieve the function of providing good support and load support to the heating element. Furthermore, the small pore size of the atomizing layer can improve the consistency of the heating element near the atomizing layer, thereby enhancing the stability of the atomization and optimizing the atomizing effect.

[0104] In some embodiments, the present disclosure relates to a multilayer ceramic body (10) comprising an oil induction layer (11), an atomizing layer (12), and a heating element (13) stacked sequentially along the X direction. The oil induction layer (11) has a first surface (11a) in contact with the e-liquid phase, while the atomizing layer (12) has a second surface (12a) facing away from the oil induction layer (11), and the heating element (13) is located on the second surface (12a). The porosity and pore size of the atomizing layer and the oil induction layer are all different. In this case, the porosity of the atomizing layer (12) is lower than the porosity of the oil induction layer (11), and the pore size of the oil induction layer (11) is larger than the pore size of the atomizing layer (12).

[0105] Preferably, the difference in porosity between the atomizing layer (12) and the oil-inducing layer (11) is within the range of 20% or less; and the difference in pore size between the atomizing layer (12) and the oil-inducing layer (11) is within the range of 10 μm or less.

[0106] In one embodiment, as illustrated in FIG. 10, the atomizing layer (12) comprises at least two porous atomizing sublayers (121) and (122) stacked in order along the X direction. The porosity of the porous atomizing sublayer (121) near the oil-inducing layer (11) is greater than the porosity of the porous atomizing sublayer (122) further away from the oil-inducing layer (11), and the pore size of the porous atomizing sublayer (121) near the oil-inducing layer (11) is greater than the pore size of the porous atomizing sublayer (122) further away from the oil-inducing layer (11).

[0107] Preferably, the difference in porosity between porous atomizing sublayers (121) near the oil-inducing layer (11) and porous atomizing sublayers (122) further away from the oil-inducing layer (11) is within the range of 20% or less; and the difference in pore size between porous atomizing sublayers (121) near the oil-inducing layer (11) and porous atomizing sublayers (122) further away from the oil-inducing layer (11) is within the range of 10 μm or less.

[0108] In one embodiment, as illustrated in FIG. 11, the oil induction layer (11) comprises at least two porous oil induction sublayers (111) and (112) stacked in order along the X direction. The porosity of the porous oil induction sublayers near the atomizing layer is less than or equal to the porosity of the porous oil induction sublayers further from the atomizing layer, and the pore size of the porous oil induction sublayers near the atomizing layer is less than or equal to the pore size of the porous oil induction sublayers further from the atomizing layer.

[0109] Preferably, the difference in porosity between porous oil-inducing sublayers (112) near the atomizing layer (12) and porous oil-inducing sublayers (111) further away from the atomizing layer (12) is within the range of 20% or less; and the difference in pore size between porous oil-inducing sublayers (112) near the atomizing layer (12) and porous oil-inducing sublayers (111) further away from the atomizing layer (12) is within the range of 10 μm or less.

[0110] In the embodiments illustrated in FIGS. 10 and 11, different porosity and pore size between the atomizing layer and the oil-inducing layer provide a configuration method for achieving various atomizing effects. Based on this approach, multiple porous sublayers of the oil-inducing layer (11) may be configured to be the same or different with respect to pore size or porosity. Likewise, multiple porous sublayers of the atomizing layer (12) may also be configured to be the same or different with respect to pore size or porosity, thereby allowing more configurable options to achieve a wider variety of atomizing effects and satisfying more needs.

[0111] In addition, the atomizing layer and / or the oil-inducing layer may have at least one porous layer, and the function of providing good support and load support to the heating element with only the atomizing layer and the oil-inducing layer can be achieved.

[0112] In the above embodiments, the parameters of the multilayer ceramic body can be configured according to actual needs.

[0113] In a preferred embodiment, the overall porosity range of the multilayer ceramic body (10) is between 55% and 58%, the average pore size of the oil-inducing layer (11) is preferably set to 22 μm, and the average pore size of the atomizing layer (12) is preferably set to 18 μm.

[0114] In a preferred embodiment, the thickness of the atomizing layer (12) is 2 mm or less, the thickness of the oil induction layer (11) is 2 mm or less, and the thickness of the multilayer ceramic body (10) is 4 mm or less.

[0115] In a preferred embodiment, the atomizing layer (12) comprises at least two porous atomizing sublayers, and each layer of the porous atomizing sublayers has a thickness of 0.5 mm or less. The oil induction layer (11) comprises at least two porous oil induction sublayers, and each layer of the porous oil induction sublayers has a thickness of 0.5 mm or less.

[0116] In a preferred embodiment, the thickness range of the porous atomizing sublayers is 0.2 mm or less and 0.05 mm or more, and the thickness range of the porous oil-inducing sublayers is 0.2 mm or less and 0.05 mm or more; the thickness range of the porous atomizing sublayers is 0.3 mm or less and 0.15 mm or more, and the thickness range of the porous oil-inducing sublayers is 0.3 mm or less and 0.15 mm or more; the thickness range of the porous atomizing sublayers is 0.5 mm or less and 0.2 mm or more, and the thickness range of the porous oil-inducing sublayers is 0.5 mm or less and 0.2 mm or more.

[0117] In some embodiments, a heating element (13) disposed on the second surface (12a) of the atomizing layer (12) may be manufactured by thick film printing technology or vacuum deposition technology; the heating element (13) may be embedded within the atomizing layer (12), and the heating element (13) may be a ceramic electric heating element; and the oil induction layer (11) and the atomizing layer (12) may be formed through a tape casting method. Other suitable manufacturing processes may also be used to form the heating element (13), the oil induction layer (11), and the atomizing layer (12), which will not be described in further detail herein.

[0118] In some embodiments, two or more porous layers of oil induction layer (11) and / or atomization layer (12) are laminated and then sintered to form a uniform layer, and physical boundaries between the layers are removed.

[0119] In some embodiments, the oil induction layer (11) and the atomization layer (12) are laminated and then sintered to form a uniform layer, and the physical boundary between the layers is removed.

[0120] The present disclosure further provides an aerosol delivery system comprising the aforementioned multilayer ceramic body.

[0121] The system further includes an aerosol generating material housed internally, a power source, and a controller; under the control of the controller, the power source supplies power to a heating element on a multilayer ceramic body, and the heating element generates heat and then heats the aerosol generating material to produce an aerosol.

[0122] It should be noted that each embodiment described herein adopts a progressive approach, and each embodiment focuses on its unique aspects in comparison with other embodiments. Similar or identical parts across the various embodiments are cross-referenced as necessary.

[0123] It should be understood that each part of the present invention may be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, a plurality of steps or methods may be implemented as software or firmware that is stored in memory and executed by a suitable instruction execution system. For example, when implemented by hardware, as in another embodiment, it may be implemented by any one or a combination thereof of techniques known in the art, such as discrete logic circuits having logic gate circuits for implementing logic functions for data signals, specialized integrated circuits having suitable combined logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0124] In the description of this specification, the reference terms “one embodiment,” “some embodiments,” “examples,” “specific examples,” or “some examples” mean that specific features, structures, materials, or properties described in connection with such embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the referential expressions of the aforementioned terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or properties described may be combined in any suitable manner in any one or more embodiments or examples.

[0125] Furthermore, terms such as "first," "second," etc. are used solely for descriptive purposes and should not be interpreted as indicating or implying relative importance, or as implicitly specifying the quantity of the indicated technical features. Accordingly, features defined as "first," "second," etc., may explicitly or implicitly include at least one such feature. In the description of the invention, the term "multiple" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0126] In the present invention, terms such as “mounting,” “connection,” “connection,” and “fixing” should be understood in a broad sense unless explicitly defined and limited otherwise. For example, unless otherwise explicitly defined, a connection may be a fixed connection or a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium; and it may be internal communication between two components or interaction between two components. A person skilled in the art may understand the specific meanings of these terms in the context of the invention as appropriate.

[0127] Although embodiments of the present invention have been illustrated and described above, it should be understood that the described embodiments are exemplary and should not be construed as limiting the invention. Within the scope of the invention, those skilled in the art may make variations, modifications, substitutions, and modifications to the described embodiments.

Claims

Claim 1 A multilayer ceramic body for an aerosol delivery system, wherein the multilayer ceramic body comprises a stacked arrangement of an oil-inducing layer and an atomizing layer; at least one of the oil-inducing layer and the atomizing layer has two or more porous layers; and at least one of the oil-inducing layer and the atomizing layer is configured to have a difference in pore size and / or porosity. Claim 2 A multilayer ceramic body according to claim 1, wherein the atomizing layer and the oil inducing layer are stacked sequentially along one direction, preferably the atomizing layer and the oil inducing layer have the same planar, arc-shaped, or curved shape and are stacked sequentially facing each other, or the atomizing layer and the oil inducing layer are columnar, coaxial, and continuously stacked along the radial direction. Claim 3 A multilayer ceramic body according to claim 1 or 2, wherein the atomizing layer comprises at least two porous atomizing sublayers stacked in sequence, said porous atomizing sublayers having the same pore size and porosity; and the oil inducing layer comprises at least two porous oil inducing sublayers stacked in sequence, said porous oil inducing sublayers having the same pore size and porosity, preferably the pore size of said porous atomizing sublayers and / or said porous oil inducing sublayers is 40 μm or less and / or 10 μm or more, and the porosity of said porous atomizing sublayers and / or said porous oil inducing sublayers is 65% or less and / or 45% or more. Claim 4 A multilayer ceramic body according to claim 1 or 2, wherein the pore size of the atomizing layer and the oil-inducing layer are the same but the porosity is different, preferably the porosity of the atomizing layer is lower than the porosity of the oil-inducing layer, and optionally the difference in porosity between the atomizing layer and the oil-inducing layer is within a range of 20% or less. Claim 5 A multilayer ceramic body according to claim 1 or 2, wherein the atomizing layer comprises at least two porous atomizing sublayers stacked in sequence, preferably the porosity of the porous atomizing sublayers closer to the oil-inducing layer is higher than the porosity of the porous atomizing sublayers further from the oil-inducing layer, and optionally the difference in porosity between the porous atomizing sublayers closer to the oil-inducing layer and the porous atomizing sublayers further from the oil-inducing layer is within a range of 20% or less. Claim 6 A multilayer ceramic body according to claim 4, wherein the oil-inducing layer comprises at least two porous oil-inducing sublayers, preferably the porosity of the porous oil-inducing sublayers closer to the atomizing layer is lower than the porosity of the porous oil-inducing sublayers further from the atomizing layer, and optionally the difference in porosity between the porous oil-inducing sublayers closer to the atomizing layer and the porous oil-inducing sublayers further from the atomizing layer is within a range of 20% or less. Claim 7 A multilayer ceramic body according to claim 5 or 6, wherein the porosity of any two layers of porous oil-inducing sublayers is the same. Claim 8 A multilayer ceramic body according to claim 1 or 2, wherein the porosity of the atomizing layer and the oil-inducing layer are the same and the pore sizes are different, preferably the pore size of the atomizing layer is smaller than the pore size of the oil-inducing layer, and optionally the difference in pore size between the atomizing layer and the oil-inducing layer is within a range of 10 μm or less. Claim 9 A multilayer ceramic body according to claim 8, wherein the atomizing layer comprises at least two porous atomizing sublayers, preferably the pore size of the porous atomizing sublayers closer to the oil-inducing layer is greater than or equal to the pore size of the porous atomizing sublayers further from the oil-inducing layer, and optionally the difference in pore size between any two layers of the porous atomizing sublayers is within the range of 10 μm or less. Claim 10 In claim 9, a multilayer ceramic body in which the pore size of any two layers of porous atomizing sublayers is the same. Claim 11 A multilayer ceramic body according to claim 8, wherein the oil-inducing layer comprises at least two layers of porous oil-inducing sublayers, preferably the pore size of the porous oil-inducing sublayers closer to the atomizing layer is less than or equal to the pore size of the porous oil-inducing sublayers further from the atomizing layer, and optionally the difference between any two layers of the porous oil-inducing sublayers is within a range of 10 μm or less. Claim 12 In claim 11, a multilayer ceramic body in which the pore size of any two layers of porous oil-inducing sublayers is the same. Claim 13 A multilayer ceramic body according to claim 1 or 2, wherein the porosity and pore size of the atomizing layer and the oil-inducing layer are all different, preferably the porosity of the atomizing layer is lower than the porosity of the oil-inducing layer and the pore size of the oil-inducing layer is larger than the pore size of the atomizing layer, optionally the difference in porosity between the atomizing layer and the oil-inducing layer is within a range of 20% or less; and the difference in pore size between the atomizing layer and the oil-inducing layer is within a range of 10 μm or less. Claim 14 In claim 13, the atomizing layer comprises at least two porous atomizing sublayers, preferably the porosity of the porous atomizing sublayers closer to the oil-inducing layer is greater than or equal to the porosity of the porous atomizing sublayers further away from the oil-inducing layer, the pore size of the porous atomizing sublayers closer to the oil-inducing layer is greater than or equal to the pore size of the porous atomizing sublayers further away from the oil-inducing layer, optionally the difference in porosity between the porous atomizing sublayers closer to the oil-inducing layer and the porous atomizing sublayers further away from the oil-inducing layer is within the range of 20% or less; and the difference in pore size between the porous atomizing sublayers closer to the oil-inducing layer and the porous atomizing sublayers further away from the oil-inducing layer is within the range of 10 μm or less, a multilayer ceramic body. Claim 15 In claim 13, the oil-inducing layer comprises at least two porous oil-inducing sublayers, preferably the porosity of the porous oil-inducing sublayers near the atomizing layer is less than or equal to the porosity of the porous oil-inducing sublayers further away from the atomizing layer, and the pore size of the porous oil-inducing sublayers near the atomizing layer is less than or equal to the pore size of the porous oil-inducing sublayers further away from the atomizing layer, optionally the difference in porosity between the porous oil-inducing sublayers near the atomizing layer and the porous oil-inducing sublayers further away from the atomizing layer is within the range of 20% or less; and the difference in pore size between the porous oil-inducing sublayers near the atomizing layer and the porous oil-inducing sublayers further away from the atomizing layer is within the range of 10 μm or less, a multilayer ceramic body. Claim 16 In claim 1, the thickness of the atomizing layer is 2 mm or less, the thickness of the oil induction layer is 2 mm or less, and the thickness of the multilayer ceramic body is 4 mm or less, preferably the atomizing layer comprises at least two porous atomizing sublayers, the thickness of each of the porous atomizing sublayers is 0.5 mm or less, optionally each of the porous atomizing sublayers has a thickness of 0.2 mm or less and 0.05 mm or more; each of the porous atomizing sublayers has a thickness of 0.3 mm or less and 0.15 mm or more; or each of the porous atomizing sublayers has a thickness of 0.5 mm or less and 0.2 mm or more, a multilayer ceramic body. Claim 17 A multilayer ceramic body according to claim 16, wherein the oil-inducing layer comprises at least two porous oil-inducing sublayers, and the thickness of each of the porous oil-inducing sublayers is 0.5 mm or less, preferably, each of the porous oil-inducing sublayers has a thickness of 0.2 mm or less and 0.05 mm or more; each of the porous oil-inducing sublayers has a thickness of 0.3 mm or less and 0.15 mm or more; or each of the porous oil-inducing sublayers has a thickness of 0.5 mm or less and 0.2 mm or more. Claim 18 In paragraph 16, the thickness of the multilayer ceramic body is 3 mm or less and 2.5 mm or more; or the thickness of the multilayer ceramic body is 1.5 mm or less and 0.8 mm or more, a multilayer ceramic body. Claim 19 A multilayer ceramic body according to claim 1, further comprising a heating element, wherein the heating element is positioned on the surface of an atomizing layer facing away from the oil induction layer, preferably manufactured on the surface of the atomizing layer facing away from the oil induction layer through thick film printing technology or vacuum deposition technology, or wherein the heating element is embedded within the atomizing layer, preferably embedded within the atomizing layer through a pre-embedding method, and optionally wherein the heating element is a ceramic electric heating element. Claim 20 A multilayer ceramic body according to claim 1, wherein two or more porous layers of an oil-inducing layer and / or atomizing layer are laminated and then sintered to form a uniform layer, and the physical boundary between the layers is removed and / or; wherein the oil-inducing layer and the atomizing layer are laminated and then sintered to form a uniform layer, and the physical boundary between the layers is removed. Claim 21 An aerosol providing system comprising any one of multilayer ceramic bodies according to any one of claims 1 to 20.

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