Multilayer composite ceramic body and aerosol supply system

Abstract

The embodiment of the invention discloses a multi-layer composite ceramic body for an aerosol supply system and the aerosol supply system. The multi-layer composite ceramic body comprises an oil guide layer and an atomization layer which are arranged in a stacked mode. At least one of the oil guide layer and the atomization layer is provided with two or more porous layers; at least one of the oil guide layer and the atomization layer is configured to be different in pore diameter and / or porosity. According to the embodiment of the invention, the multi-layer composite ceramic body has better oil locking and guiding functions; at least one of the oil guide layer and the atomization layer which are arranged in a stacked mode is provided with two or more porous layers, and good supporting and bearing can be provided for the heating body. Meanwhile, due to the arrangement of the multiple layers, the aperture and porosity of the oil guide layer and the atomization layer are adjustable, so that the ceramic body is adjustable in the aspects of atomization granularity, oil guide rate, aerosol taste and the like, different requirements can be met, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of aerosol supply, and particularly to a multi-layer composite ceramic body and an aerosol supply system. Background Art

[0002] The atomization core for an aerosol supply system is an important part of the liquid atomization device. Generally, the atomization core includes a heating element and a matrix. Among them, the matrix is mainly used to support the heating element, provide a base surface for the heating element, and ensure that the heating element can be stably in a certain shape; the matrix also needs to realize the functions of locking oil, guiding oil and atomizing evaporation. Therefore, the matrix needs to be able to store a part of the e-liquid, and can timely introduce the e-liquid in the oil tank into the atomization surface, so that when the heating element heats, while the liquid on the atomization surface evaporates, it can obtain the supplement of the e-liquid.

[0003] In order to ensure a certain resistance value and a better heating surface, the heating element needs to be made into different shapes according to the material. And the matrix also needs to design different support layers, oil locking and guiding layers, and atomization layers in combination with the heating situation. At present, the comprehensive performance of the existing ceramic atomization core is still poor, and there are defects such as low oil guiding rate, easy dry burning failure, and poor support ability. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this reason, the present invention provides a multi-layer composite ceramic body and an aerosol supply system.

[0005] In a first aspect, the present invention provides a multi-layer composite ceramic body for an aerosol supply system, including: an oil guiding layer and an atomization layer stacked; at least one of the oil guiding layer and the atomization layer has two or more porous layers; at least one of the oil guiding layer and the atomization layer is configured with different pore sizes and / or porosities.

[0006] In an embodiment of the above multi-layer composite ceramic body, the atomization layer and the oil guiding layer are stacked in sequence along one direction.

[0007] Further, the atomization layer and the oil guiding layer are in the same planar shape, arc shape or curved surface shape, and the atomization layer and the oil guiding layer are stacked face to face in sequence.

[0008] Further, the atomization layer and the oil guiding layer are in a coaxial columnar shape and are sleeved in sequence along the radial direction.

[0009] In an embodiment of the above multi-layer composite ceramic body, the atomization layer has at least two sequentially stacked porous atomization sub-layers, and the pore sizes and porosities of the porous atomization sub-layers are the same; the oil guiding layer has at least two sequentially stacked porous oil guiding sub-layers, and the pore sizes and porosities of the porous oil guiding sub-layers are the same.

[0010] In one embodiment of the above multi-layer composite ceramic body, the pore diameters of the porous atomization sub-layer and the porous oil guiding sub-layer are both less than or equal to 40 μm.

[0011] In one embodiment of the above multi-layer composite ceramic body, the pore diameters of the porous atomization sub-layer and the porous oil guiding sub-layer are both greater than or equal to 10 μm;

[0012] In one embodiment of the above multi-layer composite ceramic body, the porosities of the porous atomization sub-layer and the porous oil guiding sub-layer are both less than or equal to 65%.

[0013] In one embodiment of the above multi-layer composite ceramic body, the porosities of the porous atomization sub-layer and the porous oil guiding sub-layer are both greater than or equal to 45%.

[0014] In one embodiment of the above multi-layer composite ceramic body, the pore diameters of the atomization layer and the oil guiding layer are the same, and the porosities are different.

[0015] Furthermore, the porosity of the atomization layer is less than the porosity of the oil guiding layer.

[0016] Furthermore, the difference range between the porosity of the atomization layer and the porosity of the oil guiding layer is less than or equal to 20%.

[0017] Furthermore, the atomization layer has at least two porous atomization sub-layers stacked in sequence.

[0018] Furthermore, the porosity of the porous atomization sub-layer close to the oil guiding layer is greater than the porosity of the porous atomization sub-layer far from the oil guiding layer.

[0019] Furthermore, the difference range between the porosity of the porous atomization sub-layer close to the oil guiding layer and the porosity of the porous atomization sub-layer far from the oil guiding layer is less than or equal to 20%.

[0020] Furthermore, the porosities of any two porous atomization sub-layers are the same.

[0021] Furthermore, the oil guiding layer has at least two porous oil guiding sub-layers.

[0022] Furthermore, the porosity of the porous oil guiding sub-layer close to the atomization layer is less than the porosity of the porous oil guiding sub-layer far from the atomization layer.

[0023] Furthermore, the difference range between the porosity of the porous oil guiding sub-layer close to the atomization layer and the porosity of the porous oil guiding sub-layer far from the atomization layer is less than or equal to 20%.

[0024] Furthermore, the porosities of any two porous oil guiding sub-layers are the same.

[0025] In an embodiment of the above multi-layer composite ceramic body, the porosity of the atomization layer and the oil guiding layer is the same, but the pore diameters are different.

[0026] Furthermore, the pore diameter of the atomization layer is smaller than that of the oil guiding layer.

[0027] Furthermore, the difference range between the pore diameter of the atomization layer and the pore diameter of the oil guiding layer is less than or equal to 10 μm.

[0028] Furthermore, the atomization layer has at least two porous atomization sub-layers.

[0029] Furthermore, the pore diameter of the porous atomization sub-layer closer to the oil guiding layer is greater than or equal to the pore diameter of the porous atomization sub-layer farther from the oil guiding layer.

[0030] Furthermore, the difference range between the pore diameters of any two porous atomization sub-layers is less than or equal to 10 μm.

[0031] Furthermore, the pore diameters of any two porous atomization sub-layers are the same.

[0032] Furthermore, the oil guiding layer has at least two porous oil guiding sub-layers.

[0033] Furthermore, the pore diameter of the porous oil guiding sub-layer closer to the atomization layer is less than or equal to the pore diameter of the porous oil guiding sub-layer farther from the atomization layer.

[0034] Furthermore, the difference range between any two porous oil guiding sub-layers is less than or equal to 10 μm.

[0035] Furthermore, the pore diameters of any two porous oil guiding sub-layers are the same.

[0036] In an embodiment of the above multi-layer composite ceramic body, the porosity and the pore diameter of the atomization layer and the oil guiding layer are both different.

[0037] Furthermore, the porosity of the atomization layer is less than the porosity of the oil guiding layer, and the pore diameter of the oil guiding layer is greater than the pore diameter of the atomization layer.

[0038] Furthermore, the difference range between the porosity of the atomization layer and the porosity of the oil guiding layer is less than or equal to 20%; the difference range between the pore diameter of the atomization layer and the pore diameter of the oil guiding layer is less than or equal to 10 μm.

[0039] Furthermore, the atomization layer has at least two porous atomization sub-layers.

[0040] Further, the porosity of the porous atomization sub-layer closer to the oil guiding layer is greater than or equal to the porosity of the porous atomization sub-layer farther from the oil guiding layer, and the pore diameter of the porous atomization sub-layer closer to the oil guiding layer is greater than or equal to the pore diameter of the porous atomization sub-layer farther from the oil guiding layer.

[0041] Further, the difference range between the porosity of the porous atomization sub-layer closer to the oil guiding layer and the porosity of the porous atomization sub-layer farther from the oil guiding layer is less than or equal to 20%; the difference range between the pore diameter of the porous atomization sub-layer closer to the oil guiding layer and the pore diameter of the porous atomization sub-layer farther from the oil guiding layer is less than or equal to 10 μm.

[0042] Further, the oil guiding layer has at least two porous oil guiding sub-layers.

[0043] Further, the porosity of the porous oil guiding sub-layer closer to the atomization layer is less than or equal to the porosity of the porous oil guiding sub-layer farther from the atomization layer, and the pore diameter of the porous oil guiding sub-layer closer to the atomization layer is less than or equal to the pore diameter of the porous oil guiding sub-layer farther from the atomization layer.

[0044] Further, the difference range between the porosity of the porous oil guiding sub-layer closer to the atomization layer and the porosity of the porous oil guiding sub-layer farther from the atomization layer is less than or equal to 20%; the difference range between the pore diameter of the porous oil guiding sub-layer closer to the atomization layer and the pore diameter of the porous oil guiding sub-layer farther from the atomization layer is less than or equal to 10 μm.

[0045] In an embodiment of the above multi-layer composite ceramic body, the thickness of the atomization layer is less than or equal to 2 mm, and the thickness of the oil guiding layer is less than or equal to 2 mm; the thickness of the multi-layer composite ceramic body is less than or equal to 4 mm.

[0046] Further, the atomization layer has at least two porous atomization sub-layers; the thickness of each porous atomization sub-layer is less than or equal to 0.5 mm.

[0047] Further, the thickness of each porous atomization sub-layer is less than or equal to 0.2 mm and greater than or equal to 0.05 mm.

[0048] Further, the thickness of each porous atomization sub-layer is less than or equal to 0.3 mm and greater than or equal to 0.15 mm.

[0049] Further, the thickness of each porous atomization sub-layer is less than or equal to 0.5 mm and greater than or equal to 0.2 mm.

[0050] Further, the oil guiding layer has at least two porous oil guiding sub-layers; the thickness of each porous oil guiding sub-layer is less than or equal to 0.5 mm.

[0051] Further, the thickness of each of the porous oil guiding sub-layers is less than or equal to 0.2 mm and greater than or equal to 0.05 mm.

[0052] Further, the thickness of each of the porous oil guiding sub-layers is less than or equal to 0.3 mm and greater than or equal to 0.15 mm.

[0053] Further, the thickness of each of the porous oil guiding sub-layers is less than or equal to 0.5 mm and greater than or equal to 0.2 mm.

[0054] Further, the thickness of the multi-layer composite ceramic body is less than or equal to 3 mm and greater than or equal to 2.5 mm.

[0055] In one embodiment of the above multi-layer composite ceramic body, the thickness of the multi-layer composite ceramic body is less than or equal to 1.5 mm and greater than or equal to 0.8 mm.

[0056] In one embodiment of the above multi-layer composite ceramic body, it includes a heating element, and the heating element is arranged on the surface of the atomization layer facing away from the oil guiding layer.

[0057] Further, the heating element is prepared by a thick film printing process or a vacuum evaporation process.

[0058] In one embodiment of the above multi-layer composite ceramic body, it includes a heating element, and the heating element is embedded in the atomization layer.

[0059] Further, the heating element is embedded in the atomization layer by a pre-buried method.

[0060] Further, the heating element is a ceramic conductive heating element.

[0061] In one embodiment of the above multi-layer composite ceramic body, the oil guiding layer and the atomization layer are formed by a casting forming process.

[0062] In a second aspect, the present invention provides an aerosol supply system, including the multi-layer composite ceramic body as described above.

[0063] In one or more of the above embodiments of the present invention, at least one of the oil guiding layer and the atomization layer arranged in layers has two or more porous layers, which can provide good support and bearing for the heating element. The multi-layer composite ceramic body has better oil locking and oil guiding functions.

[0064] At the same time, the multi-layer setting enables the parameters of the oil guiding layer and the atomization layer to be configured differently, so as to achieve a variety of possible configurations to achieve different effects. Specifically, by adjusting at least one parameter of the pore size and porosity of the oil guiding layer and the atomization layer, the ceramic body can be adjusted in terms of atomization particle size, oil guiding rate, aerosol taste, etc., which can meet different requirements and improve the user experience.

[0065] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Referring to the drawings, the disclosure of the present invention will become more readily understood. It is readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In addition, like numerals in the figures are used to represent like components, wherein:

[0067] Figure 1 is a schematic diagram of the structure of a multi-layer composite ceramic body in one embodiment;

[0068] Figure 2 is a schematic diagram of the structure of a multi-layer composite ceramic body in another embodiment;

[0069] Figures 3 to 6 is a schematic diagram of the laminated structure of a multi-layer composite ceramic body in another embodiment;

[0070] Figures 7 to 9 is a schematic diagram of the laminated structure of a multi-layer composite ceramic body in another embodiment;

[0071] Figure 10 and Figure 11 is a schematic diagram of the laminated structure of a multi-layer composite ceramic body in another embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0072] Some embodiments of the present invention will be described below with reference to the drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0073] 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:

[0074] A combustible aerosol supply system, such as cigarettes, cigarillos, cigars, and tobacco for pipes or for self-rolled or self-made cigarettes (whether based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, tobacco substitutes, or other smokable materials);

[0075] A non-combustible aerosol supply system that releases compounds from an aerosol-forming material without burning the aerosol-forming material, such as electronic cigarettes, tobacco heating products, and hybrid systems, to generate an aerosol using a combination of aerosol-forming materials; and

[0076] A non-aerosol delivery system that delivers at least one substance to a user orally, nasally, transdermally, or otherwise without forming an aerosol, including but not limited to lozenges, chewing gum, patches, articles including inhalable powders, and oral products (such as oral tobacco including snuff or moist snuff), wherein the at least one substance may or may not include nicotine.

[0077] According to the present disclosure, a "combustible" aerosol supply system is an aerosol supply system in which the constituent aerosol-forming material of the aerosol supply system (or its components) burns or ignites during use to facilitate the delivery of at least one substance to the user.

[0078] In some embodiments, the delivery system is a combustible aerosol supply system, such as a system selected from the group consisting of cigarettes, cigarillos, and cigars.

[0079] In some embodiments, the present disclosure relates to a component for use in a combustible aerosol supply system, such as a filter, filter rod, filter segment, tobacco rod, spillage, aerosol modifier release component (such as a capsule, wire, or bead), or paper (such as plug wrap, tipping paper, or cigarette paper).

[0080] According to the present disclosure, a "non-combustible" aerosol supply system is an aerosol supply system in which the constituent aerosol-forming material of the aerosol supply system (or its components) does not burn or ignite while delivering at least one substance to the user.

[0081] In some embodiments, the delivery system is a non-combustible aerosol supply system, such as a powered non-combustible aerosol supply system.

[0082] In some embodiments, the non-combustible aerosol supply system is an electronic cigarette, also known as a vaping device or an electronic nicotine delivery system (ENDS), but it should be noted that the presence of nicotine in the aerosol-forming material is not necessary.

[0083] In some embodiments, the non-combustible aerosol supply system is an aerosol-forming material heating system, also known as a heat-not-burn system. An example of such a system is a tobacco heating system.

[0084] In some embodiments, the non-combustible aerosol supply system is a hybrid system that uses a combination of aerosol-forming materials to generate an aerosol, wherein one or more of the aerosol-forming materials may be heated. Each aerosol-forming material 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 includes a liquid or gel aerosol-forming material and a solid aerosol-forming material. The solid aerosol-forming material may include, for example, tobacco or non-tobacco products.

[0085] Generally, a non-flammable aerosol supply system can include a non-flammable aerosol supply device and a consumable for use with the non-flammable aerosol supply device.

[0086] In some embodiments, the present disclosure relates to consumables that include an aerosol-forming material and are configured to be used with a non-flammable aerosol supply device. These consumables are sometimes referred to in the present disclosure as articles.

[0087] In some embodiments, a non-flammable aerosol supply system, such as its non-flammable aerosol supply device, can include a power source and a controller. The power source can be, for example, a power supply or a heat source. In some embodiments, the heat source includes a carbon matrix that can be energized to distribute power in the form of heat to an aerosol-forming material or a heat transfer material in proximity to the heat source.

[0088] In some embodiments, a non-flammable aerosol supply system can include an area for receiving a consumable, an aerosol generator, an aerosol-forming area, a housing, a mouthpiece, a filter, and / or an aerosol modifier.

[0089] In some embodiments, a consumable for use with a non-flammable aerosol supply device can include an aerosol-forming material, an aerosol-forming material storage area, an aerosol-forming material delivery component, an aerosol generator, an aerosol-forming area, a housing, a wrapper, a filter, a mouthpiece, and / or an aerosol modifier.

[0090] In some embodiments, the delivery system is a non-aerosol delivery system that delivers at least one substance to a user orally, nasally, transdermally, or otherwise without forming an aerosol, including but not limited to lozenges, chewing gums, patches, articles including inhalable powders, and oral products (such as oral tobacco including snuff or moist snuff), wherein the at least one substance may or may not include nicotine.

[0091] In some embodiments, the substance to be delivered can be an aerosol-forming material or a material not intended to be aerosolized. Optionally, either material can include one or more active components, one or more flavorants, one or more aerosol-forming agent materials, and / or one or more other functional materials.

[0092] In some embodiments, the substance to be delivered includes an active substance. As used herein, the active substance can be a physiologically active material, which is a material intended to achieve or enhance a physiological response. The active substance can be selected, for example, from nutraceuticals, nootropics, psychoactive substances. The active substance can be naturally occurring or synthetically obtained. The active substance can include, for example, nicotine, caffeine, taurine, theobromine, vitamins (such as B6 or B12 or C), melatonin, cannabinoids, or their components, derivatives, or combinations. The active substance can include one or more components, derivatives, or extracts of tobacco, cannabis, or other plants.

[0093] In some embodiments, the active substance includes nicotine. In some embodiments, the active substance includes caffeine, melatonin, or vitamin B12.

[0094] As described herein, the active substance can include one or more components, derivatives, or extracts of cannabis, such as one or more cannabinoids or terpenes.

[0095] As described herein, the active substance can include or be derived from one or more plants or their components, derivatives, or extracts. As used herein, the term "plant" includes any material derived from a plant, including but not limited to extracts, leaves, bark, fibers, stems, roots, seeds, flowers, fruits, pollen, hulls, husks, etc. Alternatively, the material can include active compounds naturally present in plants, which are obtained synthetically. The material can be in the form of a liquid, gas, solid, powder, dust, crushed particles, fines, pellets, fragments, strips, sheets, etc.

[0096] Examples of plants are tobacco, eucalyptus, star anise, hemp, cocoa, cannabis, fennel, lemongrass, mint, spearmint, red tea tree, chamomile, flax, ginger, ginkgo, hazelnut, hibiscus, bay laurel, licorice, matcha, yerba mate, orange peel, papaya, rose, sage, tea (such as green tea or black tea), thyme, clove, cinnamon, coffee, anise (fennel), basil, bay leaf, cardamom, coriander, cumin, nutmeg, oregano, red pepper, rosemary, saffron, lavender, lemon peel, peppermint, juniper, elderflower, vanilla, holly, perilla plant, turmeric, turmeric powder, sandalwood, coriander leaves, bergamot, orange blossom, myrtle, blackcurrant, valerian, Spanish pepper, mace, damar resin, marjoram, olive, lemon balm, lemon basil, chive, parsley, verbena, tarragon, geranium, mulberry, ginseng, theanine, theacrine, maca, ashwagandha, damiana, kanna, chlorophyll, baobab, or any combination thereof. Mint can be selected from the following mint varieties: wild mint, Mentha c.v., Egyptian mint, peppermint, Mentha spicata c.v., Mentha piperita c.v., spearmint, Mentha cordifolia, Mentha longifolia, pineapple mint, Mentha pulegium, Mentha spicata c.v., and apple mint.

[0097] In some embodiments, the active substance comprises or is derived from one or more plants or their components, derivatives or extracts, and the plant is tobacco. In some embodiments, the active substance comprises or is derived from one or more plants or their components, derivatives or extracts, and the plants are selected from eucalyptus, star anise, cocoa and cannabis.

[0098] In some embodiments, the active substance comprises or is derived from one or more plants or their components, derivatives or extracts, and the plants are selected from Camellia sinensis var. rubiginosa and fennel.

[0099] In some embodiments, the substance to be delivered includes flavorants. As used herein, the terms "flavorant" and "fragrance" refer to materials that, where permitted by local regulations, can be used to create the taste, aroma, or other somatic sensations desired by adult consumers in a product. It can include naturally occurring flavorant materials, plants, plant extracts, synthetically obtained materials, or combinations thereof (such as tobacco, cannabis, licorice, hydrangea, eugenol, Japanese magnolia leaves, chamomile, fenugreek, cloves, maple, matcha, menthol, Japanese mint, anise (fennel), cinnamon, turmeric, Indian spices, Asian spices, herbs, wintergreen, cherry, berries, cranberries, peach, apple, orange, mango, citrus, lemon, lime, tropical fruits, papaya, rhubarb, grape, durian, dragon fruit, cucumber, blueberry, mulberry, citrus fruits, Drambuie, bourbon, scotch, whiskey, gin, tequila, rum, spearmint, mint, lavender, aloe vera, cardamom, celery, bitter skin, nutmeg, sandalwood, bergamot, geranium, khat, sorghum, betel leaf, coriander, pine, honey essence, rose oil, vanilla, lemon oil, orange oil, orange blossom, cherry blossom, cinnamon, coriander, cognac, jasmine, ylang-ylang, sage, fennel, mustard, green pepper, ginger, coriander, coffee, cannabis, peppermint oil from any species of the genus Mentha, eucalyptus, star anise, cocoa, lemongrass, adzuki bean, flax, ginkgo biloba, hazelnut, hibiscus, bay laurel, yerba mate, orange peel, rose, tea (such as green tea or black tea), thyme, juniper, elderberry, basil, bay leaf, cumin, oregano, chili pepper, rosemary, saffron, lemon peel, mint, costmary, turmeric, coriander, myrtle, blackcurrant, valerian, pimento, mace, damiana, marjoram, olive, balm, lemon basil, scallions, parsley, verbena, tarragon, limonene, thymol, camphene), flavor enhancers, bitter receptor site blockers, sensory receptor site activators or stimulants, sugars and / or sugar substitutes (such as sucralose, acesulfame potassium, aspartame, saccharin, cyclamate, lactose, sucrose, glucose, fructose, sorbitol or mannitol), and other additives such as charcoal, chlorophyll, minerals, plants, or breath fresheners. It can be a mimic, synthetic, or natural ingredient or a mixture thereof. It can be in any suitable form, such as a liquid such as an oil, a solid such as a powder, or a gas.

[0100] In some embodiments, the flavorant includes menthol, spearmint, and / or peppermint. In some embodiments, the flavorant includes flavorant components of cucumber, blueberry, citrus fruits, and / or cranberries. In some embodiments, the flavorant includes eugenol. In some embodiments, the flavorant includes flavorant components extracted from tobacco. In some embodiments, the flavorant includes fragrance components extracted from cannabis.

[0101] In some embodiments, in addition to or instead of aromatic or gustatory nerves, flavorants can include somatosensory agents, which are designed to achieve somatosensation that is typically chemically induced and perceived by stimulation of the fifth cranial nerve (trigeminal nerve), and these can include agents that provide heating, cooling, tingling, numbing effects. Suitable heat effect agents can be, but are not limited to, vanillyl ethyl ether, and suitable coolants can be, but are not limited to, cineole, WS-3.

[0102] An aerosol-generating material is a material that is capable of generating an aerosol when heated, irradiated, or electrified in any other way, for example. The aerosol-generating material can be, for example, in solid, liquid, or gel form, and it can contain or can not contain active substances and / or flavorings. In some embodiments, the aerosol-generating material can include an "amorphous solid", which can alternatively be referred to as a "mass solid" (i.e., non-fibrous). In some embodiments, the amorphous solid can be a dry gel. An amorphous solid is a solid material that can retain some fluid (such as a liquid) within it. In some embodiments, the aerosol-generating material can, for example, include from about 50 wt%, 60 wt%, or 70 wt% of amorphous solid to about 90 wt%, 95 wt%, or 100 wt% of amorphous solid.

[0103] The aerosol-generating material can include one or more active substances and / or flavorants, one or more aerosol-forming agent materials, and optionally one or more other functional materials.

[0104] The aerosol-forming agent material can include one or more components capable of forming an aerosol. In some embodiments, the aerosol-forming agent material can include one or more of glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butanediol, erythritol, meso-erythritol, ethyl vanillate, ethyl laurate, diethyl suberate, triethyl citrate, triacetin, glycerol diacetate mixture, benzyl benzoate, benzyl phenyl acetate, tributyrin, lauryl acetate, lauric acid, myristic acid, and propylene carbonate.

[0105] The one or more other functional materials can include one or more of pH regulators, colorants, preservatives, binders, fillers, stabilizers, and / or antioxidants.

[0106] The material can be present on or in a carrier to form a substrate. The carrier can be or include, for example, paper, card, cardboard, hardboard, reconstituted material, plastic material, ceramic material, composite material, glass, metal, or metal alloy. In some embodiments, the carrier includes a receptor. In some embodiments, the receptor is embedded within the material. In some alternative embodiments, the receptor is on one or either side of the material.

[0107] A consumable is an article that comprises or consists of an aerosol - forming material, with part or all of the aerosol - forming material being intended to be consumed by a user during use. The consumable can include one or more other components, such as an aerosol - forming material storage area, an aerosol - forming material delivery component, an aerosol - forming area, a housing, a wrapper, a mouthpiece, a filter, and / or an aerosol modifier. The consumable can also include an aerosol generator, such as a heater, which releases heat during use to cause the aerosol - forming material to form an aerosol. The heater can include, for example, a combustible material, a material that can be heated by electrical conduction, or a susceptor.

[0108] A susceptor is a material that can be heated by penetration with a varying magnetic field (such as an alternating magnetic field). The susceptor can be a conductive material such that penetration by the varying magnetic field causes inductive heating of the material. The heating material can be a magnetic material such that penetration by the varying magnetic field causes hysteresis heating of the material. The susceptor can be both conductive and magnetic such that the susceptor can be heated by both heating mechanisms. In this document, a device configured to generate a varying magnetic field is referred to as a magnetic - field generator.

[0109] An aerosol modifier is a substance that is typically located downstream of the aerosol - forming area and is configured to modify the generated aerosol, for example, by changing the taste, flavor, acidity, or another characteristic of the aerosol. The aerosol modifier can be provided in an aerosol - modifier release component that is operable to selectively release the aerosol modifier. For example, the aerosol modifier can be an additive or an adsorbent. For example, the aerosol modifier can include one or more of a flavoring, a coloring agent, water, and a carbon adsorbent. For example, the aerosol modifier can be a solid, a liquid, or a gel. The aerosol modifier can be in the form of a powder, a wire, or a granule. The aerosol modifier can be free of filter material.

[0110] An aerosol generator is a device configured to cause an aerosol to be formed from an aerosol - forming material. In some embodiments, the aerosol generator is a heater that is configured to subject the aerosol - forming material to thermal energy in order to release one or more volatiles from the aerosol - forming material to form an aerosol. In some embodiments, the aerosol generator is configured to cause an aerosol to be formed from the aerosol - forming material without heating. For example, the aerosol generator can be configured to subject the aerosol - forming material to one or more of vibration, increased pressure, or electrostatic energy.

[0111] The present disclosure relates to aerosol delivery systems (which may also be referred to as vapor delivery systems), such as atomizers or electronic cigarettes. In the following description, the term "electronic cigarette" or "e-cigarette" may sometimes be used, but it will be understood that this term may be used interchangeably with aerosol delivery systems / devices and electronic aerosol delivery systems / devices. Additionally, as is common in the art, the terms "aerosol" and "vapor" and related terms such as "evaporation", "atomization", and "aerosolization" are generally used interchangeably.

[0112] Aerosol delivery systems (e-cigarettes) typically (although not always) include modular components, which include a reusable device portion and a replaceable (disposable / consumable) cartridge component. Generally, the replaceable cartridge component will include aerosol generating material and an evaporator (which may be collectively referred to as an "atomizer"), and the reusable device portion will include a power source (e.g., a rechargeable power source) and control circuitry. It will be understood that these different portions may include additional elements depending on the function. For example, the reusable device portion will generally include a user interface for receiving user input and displaying operating status characteristics, and the replaceable cartridge device portion includes a temperature sensor for assisting in controlling the temperature in some cases. The cartridge is electrically and mechanically coupled to the control unit for use, for example, using threads, a bayonet, or a magnetic coupling with appropriately arranged electrical contacts. When the aerosol generating material in the cartridge is depleted, or the user wishes to switch to a different cartridge with a different aerosol generating material, the cartridge can be removed from the reusable component, and a replacement cartridge can be attached in its place. Systems and devices conforming to this type of two-piece modular configuration are generally referred to as two-piece systems / devices.

[0113] Electronic cigarettes typically have a generally elongated shape. For purposes of providing a specific example, some embodiments of the present disclosure will be considered to include such a generally elongated two-piece system with a disposable cartridge. However, it will be understood that the basic principles described herein may equally apply to different configurations, such as single-piece systems or modular systems including more than two components, refillable devices and single-use disposables, and other overall shapes, such as so-called pod-style high-performance devices which typically have a box-like shape. More generally, it will be understood that certain embodiments of the present disclosure are based on aerosol delivery systems which are operationally configured to provide functions in accordance with the principles described herein, and the construction aspects of systems configured to provide the functions of certain embodiments of the present disclosure are not of primary importance.

[0114] Refer to Figure 1, an embodiment of the present disclosure provides a multi-layer composite ceramic body 10 for an aerosol supply system, comprising: an oil guiding layer 11 and an atomizing layer 12 arranged in a stacked manner; at least one of the oil guiding layer 11 and the atomizing layer 12 has two or more porous layers; the oil guiding 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 guiding layer 11. At least one of the oil guiding layer 11 and the atomizing layer 12 is configured such that at least one parameter of the pore diameter and the porosity is different.

[0115] In an embodiment of the present invention, that at least one of the oil guiding layer 11 and the atomizing layer 12 is configured such that at least one parameter of the pore diameter and the porosity is different includes the following situations:

[0116] The oil guiding layer 11 is arranged in multiple layers, and at least one of the pore diameter and the porosity is different between at least two of its layers;

[0117] The atomizing layer 12 is arranged in multiple layers, and at least one of the pore diameter and the porosity is different between at least two of its layers;

[0118] The oil guiding layer 11 and the atomizing layer 12 are configured such that at least one parameter of the pore diameter and the porosity is different. When at least one of the atomizing layer 12 and the oil guiding layer 11 is in multiple layers, that at least one parameter of the pore diameter and the porosity of the oil guiding layer 11 and the atomizing layer 12 is different includes that at least one layer of the oil guiding layer 11 and at least one layer of the atomizing layer 12 are configured such that at least one parameter of the pore diameter and the porosity is different, and may also include that all layers of the oil guiding layer 11 and all layers of the atomizing layer 12 are configured such that at least one parameter of the pore diameter and the porosity is different.

[0119] In the above embodiment of the present invention, at least one of the stacked oil guiding layer and the atomizing layer has two or more porous layers, which can provide good support and bearing for the heating element. At the same time, the functions of locking oil and guiding oil of the multi-layer composite ceramic body are realized.

[0120] At the same time, the multi-layer setting enables at least one of the parameters of the oil guiding layer and the atomizing layer or the parameters between them to be configured differently, so as to achieve various possible configurations to achieve different effects. Specifically, by adjusting at least one parameter of the pore diameter and the porosity of the oil guiding layer and the atomizing layer, the ceramic body can be adjusted in terms of atomization particle size, oil guiding rate, aerosol taste, etc., which can meet different requirements and improve the user experience.

[0121] In the aerosol supply system, the oil guiding layer 11 is closer to the e-liquid than the atomizing layer 12, and the e-liquid is transmitted to the atomizing layer 12 through the oil guiding layer 11 and is heated and atomized on the side of the atomizing layer 12.

[0122] Among them, the atomization layer 12 and the oil guiding layer 11 can be stacked in sequence along one direction. It should be noted that the above-mentioned multi-layer composite ceramic body 10 can be made into different shapes according to actual needs. The atomization layer 12 and the oil guiding layer 11 are in the same planar shape, arc shape or curved surface shape, and are stacked face to face in sequence; it can also be as Figure 1 shown, the atomization layer 12 and the oil guiding layer 11 are in a coaxial columnar shape and are sleeved in sequence along the radial direction X.

[0123] Based on the above embodiments, in some embodiments, refer to Figure 2 , the multi-layer composite ceramic body 10 includes an oil guiding layer 11, an atomization layer 12 and a heating element 13 stacked in sequence along the X direction; wherein the oil guiding layer 11 has a first surface 11a in contact with the e-liquid, the atomization layer 12 has a second surface 12a facing away from the oil guiding layer 11, and the heating element 13 is arranged on the second surface 12a; at least one or both of the oil guiding layer 11 and the atomization layer 12 can be a multi-layer porous structure. As Figure 2 shown, the oil guiding layer 11 has at least two porous oil guiding sub-layers 111 and 112 stacked in sequence, and the pore diameters and porosities of the porous oil guiding sub-layers 111 and 112 are the same; the atomization layer 12 has at least two porous atomization sub-layers 121 and 122 stacked in sequence, and the pore diameters and porosities of the porous atomization sub-layers 121 and 122 are the same. This structure can be realized by a simple process, reducing the process complexity and process preparation cost.

[0124] Preferably, the pore diameters of the porous oil guiding sub-layers 111 and 112 are less than or equal to 40 μm; further, the pore diameters of the porous oil guiding sub-layers 111 and 112 are greater than or equal to 10 μm; the porosities of the porous oil guiding sub-layers 111 and 112 are greater than or equal to 65%, and further less than or equal to 45%.

[0125] Preferably, the pore diameters of the porous atomization sub-layers 121 and 122 are less than or equal to 40 μm, and further the pore diameters are greater than or equal to 10 μm; the porous atomization sub-layers 121 and 122 are greater than or equal to 65%, and further the porosity is less than or equal to 45%.

[0126] In some embodiments, the present disclosure relates to a multi-layer composite ceramic body 10 including an oil guiding layer 11, an atomization layer 12 and a heating element 13 stacked in sequence along the X direction; wherein the oil guiding layer 11 has a first surface 11a in contact with the e-liquid, the atomization layer 12 has a second surface 12a facing away from the oil guiding layer 11, and the heating element 13 is arranged on the second surface 12a; the pore diameters of the atomization layer 12 and the oil guiding layer 11 are the same, and the porosities are different, wherein the porosity of the atomization layer 12 is less than the porosity of the oil guiding layer 11.

[0127] Preferably, the difference range between the porosity of the atomization layer 12 and the porosity of the oil guiding layer 11 is less than or equal to 20%.

[0128] As one implementation solution, referring to Figure 3 , the pore diameters of the atomization layer 12 and the oil guiding layer 11 are the same; the atomization layer 12 has at least two porous atomization sub-layers 121 and 122 stacked in sequence along the X direction; the porosity of the porous atomization sub-layer 121 close to the oil guiding layer 11 is greater than the porosity of the porous atomization sub-layer 122 far from the oil guiding layer 11.

[0129] Preferably, the difference range between the porosity of the porous atomization sub-layer 121 close to the oil guiding layer 11 and the porosity of the porous atomization sub-layer 122 far from the oil guiding layer 11 is less than or equal to 20%.

[0130] As another implementation solution, referring to Figure 4 , different from the embodiment shown in Figure 3 , the porosity of the porous atomization sub-layer 121 close to the oil guiding layer 11 is equal to the porosity of the porous atomization sub-layer 122 far from the oil guiding layer 11.

[0131] As another implementation manner, referring to Figure 5 , the pore diameters of the atomization layer 12 and the oil guiding layer 11 are the same; the oil guiding layer 11 includes at least two porous oil guiding sub-layers 111 and 112 stacked in sequence along the X direction; wherein, the porosity of the porous oil guiding sub-layer 112 close to the atomization layer 12 is less than the porosity of the porous oil guiding sub-layer 111 far from the atomization layer 12.

[0132] Preferably, the difference range between the porosity of the porous oil guiding sub-layer 112 close to the atomization layer 12 and the porosity of the porous oil guiding sub-layer 111 far from the atomization layer 12 is less than or equal to 20%.

[0133] As another implementation manner, referring to Figure 6 , different from the embodiment shown in Figure 5 , the pore diameters of the porous oil guiding sub-layers 111 and 112 are the same, and the porosities are also the same.

[0134] In the above embodiments, the pore diameters of the oil guiding layer 11 and the atomization layer 12 are the same, and the pore diameter ratios are different, which is a setting method to achieve different atomization effects. And on the basis of this method, the multi-layer oil guiding sub-layers of the oil guiding layer 11 can be set the same or differently for one of the pore diameter and porosity; the multi-layer atomization sub-layers of the atomization layer 12 can be set the same or differently for one of the pore diameter and porosity, so as to achieve more different atomization effects through more settable methods and meet more requirements.

[0135] Furthermore, the atomization layer and / or the oil guiding layer has at least one porous layer, and only the atomization layer and the oil guiding layer can achieve the function of good support and bearing for the heating element.

[0136] In some embodiments, the present disclosure relates to a multi-layer composite ceramic body 10 including an oil guiding layer 11, an atomization layer 12, and a heating element 13 stacked in sequence along the X direction; wherein the oil guiding layer 11 has a first surface 11a in contact with the e-liquid, the atomization layer 12 has a second surface 12a facing away from the oil guiding layer 11, and the heating element 13 is disposed on the second surface 12a; the atomization layer 12 and the oil guiding layer 11 have the same porosity but different pore diameters, and the pore diameter of the atomization layer 12 is smaller than that of the oil guiding layer 11.

[0137] Preferably, the difference range between the pore diameter of the atomization layer 12 and the pore diameter of the oil guiding layer 11 is less than or equal to 10 μm.

[0138] As an implementation solution, referring to Figure 7 , the atomization layer 12 and the oil guiding layer 11 have the same porosity; the atomization layer 12 has at least two porous atomization sub-layers 121 and 122 stacked in sequence along the X direction; the pore diameter of the porous atomization sub-layer 121 close to the oil guiding layer 11 is larger than the pore diameter of the porous atomization sub-layer 122 far from the oil guiding layer 11.

[0139] Preferably, the difference range of the pore diameters between any two porous atomization sub-layers is less than or equal to 10 μm.

[0140] As another implementation scheme, referring to Figure 8 , different from Figure 7 , the pore diameters of any two porous atomization sub-layers are the same, for example, the pore diameters of the porous atomization sub-layers 121 and 122 are the same.

[0141] As another implementation scheme, referring to Figure 9 , the oil guiding layer 11 has at least two porous oil guiding sub-layers 111 and 112 stacked in sequence along the X direction; the pore diameter of the porous oil guiding sub-layer 112 close to the atomization layer 12 is less than or equal to the pore diameter of the porous oil guiding sub-layer 111 far from the atomization layer 12.

[0142] Preferably, the difference range between any two porous oil guiding sub-layers (such as 111 and 112) in the oil guiding layer 11 is less than or equal to 10 μm.

[0143] As another implementation scheme, referring to Figure 8 , different from the implementation scheme shown in Figure 9 , the pore diameters of any two porous oil guiding sub-layers (such as 111 and 112) in the oil guiding layer 11 are the same.

[0144] In the above embodiments, the pore diameters of the oil guiding layer 11 and the atomizing layer 12 are different, and the porosity rates are the same, which is a setting method to achieve different atomizing effects. And on the basis of this method, the multi-layer oil guiding sub-layers of the oil guiding layer 11 can be set the same or differently for one of the pore diameter and porosity; the multi-layer atomizing sub-layers of the atomizing layer 12 can be set the same or differently for one of the pore diameter and porosity, so as to achieve more different atomizing effects through more adjustable methods and meet more requirements. Further, the atomizing layer and / or the oil guiding layer has at least one porous layer, and only the atomizing layer and the oil guiding layer can achieve the function of well supporting and carrying the heating element. In addition, the pore diameter of the atomizing layer is small, which can make the heating element closer to the atomizing layer more consistent, thereby improving the atomizing stability and optimizing the atomizing effect.

[0145] In some embodiments, the present disclosure relates to a multi-layer composite ceramic body 10 including an oil guiding layer 11, an atomizing layer 12, and a heating element 13 stacked in sequence along the X direction; wherein the oil guiding layer 11 has a first surface 11a in contact with the e-liquid, the atomizing layer 12 has a second surface 12a facing away from the oil guiding layer 11, and the heating element 13 is disposed on the second surface 12a; the porosity of the atomizing layer 12 and the oil guiding layer 11 is different, and the pore diameters are also different. Among them, the porosity of the atomizing layer 12 is less than the porosity of the oil guiding layer 11, and the pore diameter of the oil guiding layer 11 is greater than the pore diameter of the atomizing layer 12.

[0146] Preferably, the difference range between the porosity of the atomizing layer 12 and the porosity of the oil guiding layer 11 is less than or equal to 20%; the difference range between the pore diameter of the atomizing layer 12 and the pore diameter of the oil guiding layer 11 is less than or equal to 10 μm.

[0147] As an implementation scheme, referring to Figure 10 , the atomizing layer 12 has at least two porous atomizing sub-layers 121 and 122 stacked in sequence along the X direction. The porosity of the porous atomizing sub-layer 121 closer to the oil guiding layer 11 is greater than or equal to the porosity of the porous atomizing sub-layer 122 farther from the oil guiding layer 11, and the pore diameter of the porous atomizing sub-layer 121 closer to the oil guiding layer 11 is greater than or equal to the pore diameter of the porous atomizing sub-layer 122 farther from the oil guiding layer 11.

[0148] Preferably, the difference range between the porosity of the porous atomizing sub-layer 121 closer to the oil guiding layer 11 and the porosity of the porous atomizing sub-layer 122 farther from the oil guiding layer 11 is less than or equal to 20%; the difference range between the pore diameter of the porous atomizing sub-layer 121 closer to the oil guiding layer 11 and the pore diameter of the porous atomizing sub-layer 122 farther from the oil guiding layer 11 is less than or equal to 10 μm.

[0149] As another implementation scheme, referring to Figure 11, the oil guiding layer 11 includes at least two porous oil guiding sub-layers 111 and 112 stacked in sequence along the X direction. The porosity of the porous oil guiding sub-layer 112 closer to the atomizing layer 12 is less than or equal to the porosity of the porous oil guiding sub-layer 111 farther from the atomizing layer 12, and the pore diameter of the porous oil guiding sub-layer 112 closer to the atomizing layer 12 is less than or equal to the pore diameter of the porous oil guiding sub-layer 111 farther from the atomizing layer 12.

[0150] Preferably, the difference range between the porosity of the porous oil guiding sub-layer 112 closer to the atomizing layer 12 and the porosity of the porous oil guiding sub-layer 111 farther from the atomizing layer 12 is less than or equal to 20%; the difference range between the pore diameter of the porous oil guiding sub-layer 112 closer to the atomizing layer 12 and the pore diameter of the porous oil guiding sub-layer 111 farther from the atomizing layer 12 is less than or equal to 10 μm.

[0151] In Figure 10 and Figure 11 In the illustrated embodiments, the different porosities and pore diameters of the atomizing layer and the oil guiding layer are a setting method to achieve different atomizing effects. And on the basis of this method, the multi-layer oil guiding sub-layers of the oil guiding layer 11 can be set the same or differently for one of the pore diameter and porosity; the multi-layer atomizing sub-layers of the atomizing layer 12 can be set the same or differently for one of the pore diameter and porosity, so as to achieve more different atomizing effects through more settable methods and meet more requirements.

[0152] Furthermore, the atomizing layer and / or the oil guiding layer has at least one porous layer, and only the atomizing layer and the oil guiding layer can achieve the function of well supporting and carrying the heating element.

[0153] In each of the above embodiments, the parameters of the multi-layer composite ceramic body can be set according to actual needs.

[0154] As a preference, the overall porosity range of the multi-layer composite ceramic body 10 is 55% - 58%, the average pore diameter of the oil guiding layer 11 is preferably 22 μm, and the average pore diameter of the atomizing layer 12 is preferably 18 μm.

[0155] As a preference, the thickness of the atomizing layer 12 is less than or equal to 2 mm, the thickness of the oil guiding layer 11 is less than or equal to 2 mm; the thickness of the multi-layer composite ceramic body 10 is less than or equal to 4 mm.

[0156] As a preference, the atomizing layer 12 has at least two porous atomizing sub-layers; the thickness of the porous atomizing sub-layer is less than or equal to 0.5 mm; the oil guiding layer 11 has at least two porous oil guiding sub-layers; the thickness of the porous oil guiding sub-layer is less than or equal to 0.5 mm.

[0157] As a preferred embodiment, the thickness range of the porous atomization sub-layer is greater than or equal to 0.05 mm and less than or equal to 0.2 mm; the thickness range of the porous oil guiding sub-layer is greater than or equal to 0.05 mm and less than or equal to 0.2 mm; or, the thickness range of the porous atomization sub-layer is greater than or equal to 0.15 mm and less than or equal to 0.3 mm; the thickness range of the porous oil guiding sub-layer is greater than or equal to 0.15 mm and less than or equal to 0.3 mm; or, the thickness range of the porous atomization sub-layer is greater than or equal to 0.2 mm and less than or equal to 0.5 mm; the thickness range of the porous oil guiding sub-layer is greater than or equal to 0.2 mm and less than or equal to 0.5 mm.

[0158] In some embodiments, the heating element 13 disposed on the second surface 12a of the atomization layer 12 can be prepared by a thick film printing process or a vacuum evaporation process; the heating element 13 can also be embedded in the atomization layer 12, and the forming material of the heating element 13 can be a ceramic conductive heating element; the oil guiding layer 11 and the atomization layer 12 can be formed by a casting process. The forming processes of the heating element 13, the oil guiding layer 11, and the atomization layer 12 can also be formed by other processes, which will not be elaborated here.

[0159] On the other hand, the present disclosure also provides an aerosol supply system, including the multi-layer composite ceramic body as described above.

[0160] The system further includes an aerosol generating material, a power source, and a controller accommodated therein; the power source supplies power to the heating element on the multi-layer composite ceramic body under the control of the controller, and after the heating element generates heat, it heats the aerosol generating material to generate aerosol.

[0161] It should be noted that the various embodiments and examples in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0162] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0163] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0164] In the present invention, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0165] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-layer composite ceramic body for an aerosol supply system, characterized in that, Comprising: An oil guiding layer and an atomizing layer stacked; at least one of the oil guiding layer and the atomizing layer has two or more porous layers; At least one of the oil guiding layer and the atomizing layer is configured to have different pore diameters and / or porosities.

2. The multi-layer composite ceramic body according to claim 1, characterized in that The atomizing layer and the oil guiding layer are stacked in sequence along one direction.

3. The multi-layer composite ceramic body according to claim 2, wherein, The atomizing layer and the oil guiding layer are in the same planar shape, arc shape or curved surface shape, and the atomizing layer and the oil guiding layer are stacked face to face in sequence.

4. The multi-layer composite ceramic body according to claim 2, wherein, The atomizing layer and the oil guiding layer are in a coaxial columnar shape and are nested in sequence along the radial direction.

5. The multi-layer composite ceramic body according to any one of claims 1 to 4, characterized in that, The atomizing layer has at least two porous atomizing sub-layers stacked in sequence, and the pore diameters and porosities of the porous atomizing sub-layers are the same; and / or, the oil guiding layer has at least two porous oil guiding sub-layers stacked in sequence, and the pore diameters and porosities of the porous oil guiding sub-layers are the same.

6. The multi-layer composite ceramic body according to claim 5, characterized in that, The pore diameters of the porous atomizing sub-layers and / or the porous oil guiding sub-layers are less than or equal to 40 μm.

7. The multi-layer composite ceramic body according to claim 6, characterized in that, The pore diameters of the porous atomizing sub-layers and / or the porous oil guiding sub-layers are greater than or equal to 10 μm.

8. The multi-layer composite ceramic body according to claim 5, characterized in that, The porosities of the porous atomizing sub-layers and / or the porous oil guiding sub-layers are less than or equal to 65%.

9. The multi-layer composite ceramic body according to claim 8, wherein The porosities of the porous atomizing sub-layers and / or the porous oil guiding sub-layers are greater than or equal to 45%.

10. The multi-layer composite ceramic body according to any one of claims 1 to 4, characterized in that, The atomizing layer and the oil guiding layer have the same pore diameter and different porosities.

11. The multi-layer composite ceramic body according to claim 10, wherein, The porosity of the atomizing layer is less than the porosity of the oil guiding layer.

12. The multi-layer composite ceramic body according to claim 11, wherein, The difference range between the porosity of the atomizing layer and the porosity of the oil guiding layer is less than or equal to 20%.

13. The multi-layer composite ceramic body according to claim 10, characterized in that, The atomizing layer has at least two porous atomizing sub-layers stacked in sequence.

14. The multi-layer composite ceramic body according to claim 13, characterized in that, The porosity of the porous atomizing sub-layer close to the oil guiding layer is greater than the porosity of the porous atomizing sub-layer far from the oil guiding layer.

15. The multi-layer composite ceramic body according to claim 14, wherein, The difference range between the porosity of the porous atomizing sub-layer close to the oil guiding layer and the porosity of the porous atomizing sub-layer far from the oil guiding layer is less than or equal to 20%.

16. The multi-layer composite ceramic body according to claim 13, wherein, The porosities of any two porous atomizing sub-layers are the same.

17. The multi-layer composite ceramic body according to claim 10, characterized in that, The oil guiding layer has at least two porous oil guiding sub-layers.

18. The multi-layer composite ceramic body according to claim 17, wherein, The porosity of the porous oil guiding sub-layer close to the atomizing layer is less than the porosity of the porous oil guiding sub-layer far from the atomizing layer.

19. The multi-layer composite ceramic body according to claim 18, wherein, The difference range between the porosity of the porous oil guiding sub-layer close to the atomizing layer and the porosity of the porous oil guiding sub-layer far from the atomizing layer is less than or equal to 20%.

20. The multi-layer composite ceramic body according to claim 17, characterized in that, The porosities of any two porous oil guiding sub-layers are the same.

21. The multi-layer composite ceramic body according to any one of claims 1 to 4, characterized in that, The atomizing layer and the oil guiding layer have the same porosity and different pore diameters.

22. The multi-layer composite ceramic body according to claim 21, wherein The pore diameter of the atomizing layer is less than the pore diameter of the oil guiding layer.

23. The multi-layer composite ceramic body according to claim 22, wherein, The difference range between the pore diameter of the atomizing layer and the pore diameter of the oil guiding layer is less than or equal to 10 μm.

24. The multi-layer composite ceramic body according to claim 21, wherein, The atomizing layer has at least two porous atomizing sub-layers.

25. The multi-layer composite ceramic body according to claim 24, characterized in that, The pore diameter of the porous atomizing sub-layer close to the oil guiding layer is greater than or equal to the pore diameter of the porous atomizing sub-layer far from the oil guiding layer.

26. The multi-layer composite ceramic body according to claim 25, wherein, The difference range between the pore diameters of any two porous atomizing sub-layers is less than or equal to 10 μm.

27. The multi-layer composite ceramic body according to claim 24, characterized in that, The pore diameters of any two porous atomizing sub-layers are the same.

28. The multi-layer composite ceramic body according to claim 21, wherein, The oil guiding layer has at least two porous oil guiding sub-layers.

29. The multi-layer composite ceramic body according to claim 28, wherein, The pore diameter of the porous oil guiding sub-layer close to the atomizing layer is less than or equal to the pore diameter of the porous oil guiding sub-layer far from the atomizing layer.

30. The multi-layer composite ceramic body according to claim 29, characterized in that, The difference range between any two of the porous oil-conducting sub-layers is less than or equal to 10 μm.

31. The multi-layer composite ceramic body according to claim 28, wherein, The pore diameters of any two of the porous oil-conducting sub-layers are the same.

32. The multi-layer composite ceramic body according to any one of claims 1 to 4, characterized in that, The porosity and pore diameter of the atomization layer and the oil-conducting layer are different.

33. The multi-layer composite ceramic body according to claim 32, wherein The porosity of the atomization layer is less than that of the oil-conducting layer, and the pore diameter of the oil-conducting layer is greater than that of the atomization layer.

34. The multi-layer composite ceramic body according to claim 33, characterized in that, The difference range between the porosity of the atomization layer and that of the oil-conducting layer is less than or equal to 20%; the difference range between the pore diameter of the atomization layer and that of the oil-conducting layer is less than or equal to 10 μm.

35. The multi-layer composite ceramic body according to claim 32, wherein, The atomization layer has at least two porous atomization sub-layers.

36. The multi-layer composite ceramic body according to claim 35, wherein, The porosity of the porous atomization sub-layer close to the oil-conducting layer is greater than or equal to that of the porous atomization sub-layer far from the oil-conducting layer, and the pore diameter of the porous atomization sub-layer close to the oil-conducting layer is greater than or equal to that of the porous atomization sub-layer far from the oil-conducting layer.

37. The multi-layer composite ceramic body according to claim 35, wherein, The difference range between the porosity of the porous atomization sub-layer close to the oil-conducting layer and that of the porous atomization sub-layer far from the oil-conducting layer is less than or equal to 20%; the difference range between the pore diameter of the porous atomization sub-layer close to the oil-conducting layer and that of the porous atomization sub-layer far from the oil-conducting layer is less than or equal to 10 μm.

38. The multi-layer composite ceramic body according to claim 32, wherein, The oil-conducting layer has at least two porous oil-conducting sub-layers.

39. The multi-layer composite ceramic body according to claim 38, wherein, The porosity of the porous oil-conducting sub-layer close to the atomization layer is less than or equal to that of the porous oil-conducting sub-layer far from the atomization layer, and the pore diameter of the porous oil-conducting sub-layer close to the atomization layer is less than or equal to that of the porous oil-conducting sub-layer far from the atomization layer.

40. The multi-layer composite ceramic body according to claim 38, characterized in that, The difference range between the porosity of the porous oil-conducting sub-layer close to the atomization layer and that of the porous oil-conducting sub-layer far from the atomization layer is less than or equal to 20%; the difference range between the pore diameter of the porous oil-conducting sub-layer close to the atomization layer and that of the porous oil-conducting sub-layer far from the atomization layer is less than or equal to 10 μm.

41. The multi-layer composite ceramic body according to claim 1, characterized in that, The thickness of the atomization layer is less than or equal to 2 mm, and the thickness of the oil-conducting layer is less than or equal to 2 mm; the thickness of the multi-layer composite ceramic body is less than or equal to 4 mm.

42. The multi-layer composite ceramic body according to claim 41, characterized in that, The atomization layer has at least two layers of porous atomization sub-layers; the thickness of each porous atomization sub-layer is less than or equal to 0.5 mm.

43. The multi-layer composite ceramic body according to claim 42, wherein The thickness of each porous atomization sub-layer is less than or equal to 0.2 mm and greater than or equal to 0.05 mm; or the thickness of each porous atomization sub-layer is less than or equal to 0.3 mm and greater than or equal to 0.15 mm; or the thickness of each porous atomization sub-layer is less than or equal to 0.5 mm and greater than or equal to 0.2 mm.

44. The multi-layer composite ceramic body according to claim 41, wherein, The oil-conducting layer has at least two layers of porous oil-conducting sub-layers; the thickness of each porous oil-conducting sub-layer is less than or equal to 0.5 mm.

45. The multi-layer composite ceramic body according to claim 44, wherein, The thickness of each porous oil-conducting sub-layer is less than or equal to 0.2 mm and greater than or equal to 0.05 mm; or the thickness of each porous oil-conducting sub-layer is less than or equal to 0.3 mm and greater than or equal to 0.15 mm; or the thickness of each porous oil-conducting sub-layer is less than or equal to 0.5 mm and greater than or equal to 0.2 mm.

46. The multi-layer composite ceramic body according to claim 41, wherein, The thickness of the multi-layer composite ceramic body is less than or equal to 3 mm and greater than or equal to 2.5 mm.

47. The multi-layer composite ceramic body according to claim 41, wherein, The thickness of the multi-layer composite ceramic body is less than or equal to 1.5 mm and greater than or equal to 0.8 mm.

48. The multilayer composite ceramic body according to claim 1, wherein, It includes a heating element, and the heating element is arranged on the surface of the atomization layer facing away from the oil guiding layer.

49. The multi-layer composite ceramic body according to claim 48, characterized in that, The heating element is prepared on the surface of the atomization layer facing away from the oil guiding layer by thick film printing process or vacuum evaporation process.

50. The multi-layer composite ceramic body according to claim 1, characterized in that It includes a heating element, and the heating element is embedded in the atomization layer.

51. The multi-layer composite ceramic body according to claim 50, characterized in that, The heating element is embedded in the atomization layer by a pre-embedding method.

52. The multi-layer composite ceramic body according to claim 50, wherein, The heating element is a ceramic conductive heating element.

53. The multi-layer composite ceramic body according to claim 1, wherein, The oil guiding layer and the atomization layer are formed by a casting forming process.

54. An aerosol supply system, characterized in that, It includes a multi-layer composite ceramic body according to any one of claims 1-53.

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