Aerosol generating product and aerosol generating system

Abstract

The present application provides an aerosol generating product and an aerosol generating system. The aerosol generating product comprises: an outer body comprising a cover plate and a tray which are opposite to each other, and an air channel formed between the cover plate and the tray, wherein at least one or more recesses are formed on the side of the tray facing the cover plate; and a matrix and an aerosol generating substrate, which are contained within the at least one or more recesses. The matrix can be penetrated by a changed magnetic field to generate heat, so as to heat the aerosol generating substrate to generate aerosol; the matrix is provided with a plurality of meshes, so that the matrix is fluid-permeable, and the aerosol generating substrate is located between the tray and the matrix; and during use, the aerosol generated by heating the aerosol generating substrate penetrates through the meshes of the matrix and then is released to the air channel. According to the aerosol generating product, the aerosol generating substrate is located between the matrix and the tray, so that heat of the matrix can be absorbed by the aerosol generating substrate, thereby reducing heat transfer to the tray.

Description

Aerosol generating products and aerosol generating systems

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the prior application with application number 202410257636.8 filed with the State Intellectual Property Office of China on March 6, 2024, entitled “Aerosol Generating Article and Aerosol Generating System”. The contents of the above-mentioned prior application are incorporated into this text by introduction. Technical Field

[0003] The embodiments of the present application relate to the technical field of heat-not-burn aerosol generation technology, and in particular to an aerosol generating product and an aerosol generating system. Background Art

[0004] Smoking articles (eg, cigarettes, cigars, etc.) burn tobacco during use to produce tobacco smoke. Attempts have been made to replace these tobacco-burning articles by creating products that release compounds without combustion.

[0005] An example of such a product is a heating device that releases compounds by heating rather than burning a material. For example, the material may be tobacco or other non-tobacco products, which may or may not contain nicotine. U.S. Patent No. 5,479,948A proposes a heating device that gradually transfers sections or locations of a tape-like aerosol-generating substrate to a heating element for heating. This heating device heats the tape-like aerosol-generating substrate in a manner that allows for accurate and consistent aerosol delivery to the consumer with each puff.

[0006] Application Contents

[0007] One embodiment of the present application provides an aerosol-generating article, comprising:

[0008] an outer body defining an outer surface of the aerosol-generating article; the outer body comprising a cover plate and a tray facing each other, and an air passage formed between the cover plate and the tray; at least one or more recessed cavities are arranged on a side of the tray facing the cover plate;

[0009] A substrate and an aerosol-generating substrate are contained in the at least one or more cavities; the substrate is configured to be penetrated by a changing magnetic field and generate heat, thereby heating the aerosol-generating substrate to generate aerosol;

[0010] The substrate is provided with a plurality of meshes so as to make the substrate fluid permeable, and the aerosol generating substrate is located between the tray and the substrate; in use, the aerosol generating substrate is heated to generate an aerosol which passes through the meshes of the substrate and is released into the air channel.

[0011] In some embodiments, the base includes a first side surface close to the cover plate and a second side surface close to the tray;

[0012] The first side surface and the second side surface are in non-contact with the external body, thereby reducing the transfer of heat from the base to the external body.

[0013] In some embodiments, the first side surface is exposed to the air channel;

[0014] The aerosol-generating substrate is bonded to the second side surface of the base.

[0015] In some embodiments, the base is substantially circular; and the mesh is square.

[0016] In some embodiments, the ratio of the area of ​​the mesh on the substrate to the area of ​​the substrate is greater than 25%.

[0017] In some embodiments, the ratio of the area of ​​the mesh on the substrate to the area of ​​the substrate is between 30% and 60%.

[0018] Yet another embodiment of the present application provides an aerosol-generating article, comprising:

[0019] an outer body defining an outer surface of the aerosol-generating article; the outer body comprising a cover plate and a tray facing each other, and an air passage formed between the cover plate and the tray; at least one or more recessed cavities are arranged on a side of the tray facing the cover plate;

[0020] A substrate and an aerosol-generating substrate are contained in the at least one or more cavities; the substrate is configured to be penetrated by a changing magnetic field and generate heat, thereby heating the aerosol-generating substrate to generate aerosol;

[0021] The aerosol generating substrate is exposed in the air channel, and the substrate is located between the aerosol generating substrate and the tray; the tray is also provided with a supporting protrusion located in the at least one or more concave cavities; the substrate rests on the supporting protrusion, thereby forming or defining a gap with the tray to reduce the transfer of heat from the substrate to the tray.

[0022] In some embodiments, the support protrusions include a first support protrusion located near the center of the cavity, and a plurality of second support protrusions spaced apart circumferentially around the first support protrusion.

[0023] Yet another embodiment of the present application further provides an aerosol generating system, comprising:

[0024] Replaceable aerosol-generating articles;

[0025] Reusable heating unit includes:

[0026] Front and back sides facing away from each other;

[0027] a receiving chamber configured to receive the aerosol-generating article in a predetermined orientation; when the aerosol-generating article is received in the receiving chamber in the predetermined orientation, the cover is close to the front side and the tray is close to the rear side;

[0028] At least one planar spiral coil is located between the receiving cavity and the back side; when the aerosol generating article is received in the receiving cavity, the planar spiral coil is arranged substantially parallel to and spaced apart from the substrate, and the planar spiral coil is configured to generate a changing magnetic field that penetrates the substrate.

[0029] In some embodiments, when the aerosol generating product is received in the receiving cavity in a predetermined direction, the area of ​​the projection of the substrate on the plane where the planar spiral coil is located and the overlapping part of the planar spiral coil accounts for more than 85% of the area of ​​the planar spiral coil.

[0030] Yet another embodiment of the present application provides an aerosol-generating article, comprising:

[0031] an outer body defining an outer surface of the aerosol-generating article; the outer body comprising an air passage extending longitudinally therethrough;

[0032] A sheet-shaped substrate and a sheet-shaped aerosol-generating matrix are located within the outer body; the substrate is configured to be penetrated by a changing magnetic field and generate heat, thereby heating the aerosol-generating matrix to generate aerosol; the substrate includes a first side surface and a second side surface opposite to each other; the first side surface is exposed to the air passage, and the aerosol-generating matrix is ​​located between the second side surface and the outer body;

[0033] The substrate is provided with a plurality of meshes so as to make the substrate fluid-permeable; in use, the aerosol generated by heating the aerosol-generating substrate passes through the meshes of the substrate and is released into the air channel.

[0034] In the above aerosol-generating products, the aerosol-generating matrix is ​​located between the base and the tray, so that the heat of the base can be absorbed by the aerosol-generating matrix, thereby reducing the heat transfer to the tray. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0036] FIG1 is a schematic diagram of an aerosol generating system provided by one embodiment;

[0037] FIG2 is a schematic diagram of the aerosol generating article being removed or replaced after the door cover of the heating device in FIG1 is opened;

[0038] FIG3 is an exploded schematic diagram of the aerosol generating article in FIG2 from one perspective;

[0039] FIG4 is a schematic diagram of the heating element and aerosol generating substrate in FIG3 after being assembled on a tray;

[0040] FIG5 is a structural diagram of the cover plate in FIG3 from another perspective;

[0041] FIG6 is an exploded schematic diagram of the heating device in FIG2 from one perspective;

[0042] FIG7 is a cross-sectional schematic diagram of the aerosol generating system in FIG1 from one perspective;

[0043] FIG8 is a cross-sectional schematic diagram of the aerosol generating system in FIG1 from another perspective;

[0044] FIG9 is a cross-sectional schematic diagram of the aerosol-generating article in FIG3 received in a heating device from one perspective;

[0045] FIG10 is an exploded schematic diagram of an aerosol-generating article according to yet another embodiment, from one perspective;

[0046] 11 is a schematic cross-sectional view of the aerosol-generating article in FIG. 10 received in a heating device, showing one perspective. DETAILED DESCRIPTION

[0047] In order to facilitate the understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific implementation methods.

[0048] One embodiment of the present application provides an aerosol generating system for heating an aerosol generating article that can be a consumable material to generate an aerosol.

[0049] In some embodiments, the aerosol generating system may include a reusable heating device and replaceable consumables such as an aerosol generating article. The replaceable consumables such as an aerosol generating article are received or combined with the reusable heating device to form the aerosol generating system.

[0050] For example, FIG1 and FIG2 show schematic diagrams of an aerosol generating system according to an embodiment; in this embodiment, the aerosol generating system includes:

[0051] The aerosol-generating product 200 is a replaceable consumable, and the heating device 100 accommodates and receives the aerosol-generating product 200 and heats it.

[0052] In the embodiment shown in Figures 1 and 2, the heating device 100 includes several components disposed within an outer shell (which may be referred to as a housing). The overall design of the housing may vary, and the type or configuration of the housing that may define the overall size and shape of the heating device 100 may vary. Typically, the elongated body may be formed by a single, integral housing, or the longitudinally elongated housing may be formed by two or more separable bodies. In some examples, all or only a portion of the housing may be formed from a metal or alloy such as stainless steel, aluminum, or other suitable materials including various plastics (e.g., polycarbonate), metal-plated over plastic, ceramic, and the like. In the embodiment shown in Figures 1 and 2, the heating device 100 is substantially flat; the longitudinal length of the heating device 100 is greater than the width, and the width is greater than the thickness.

[0053] In some embodiments, the housing of the heating device 100 substantially defines the outer surface of the heating device 100. In the embodiment shown in Figures 1 and 2, the heating device 100 includes:

[0054] The housing may include one or more reusable components; the housing has a proximal end 110 and a distal end 120 opposite to each other in the longitudinal direction, a first side 130 and a second side 140 opposite to each other in the width direction, and a front side 150 and a rear side 160 opposite to each other in the thickness direction.

[0055] During use, the proximal end 110 is configured as the end through which the user inhales the aerosol and is provided with a mouthpiece 111 for the user to draw in. The distal end 120 is the end away from the user. A charging port 121 is provided at the distal end 120; this port is used to charge the heating device 100 and / or the battery cell 10 within the heating device 100. In some embodiments, the charging port 121 utilizes a USB Type-C port; in other variations, the charging port 121 may utilize a USB 2.0, USB 3.0, or USB 4-pin port.

[0056] In some embodiments, the nozzle piece 111 and the housing / second shell 180 are separately prepared and assembled; the nozzle piece 111 and the housing are detachably connected; thus, during use, the nozzle piece 111 can be detached or removed from the housing; and a sealing ring, such as an O-ring, can be used to form an airtight seal therebetween. Alternatively, in other embodiments, the nozzle piece 111 and the housing / second shell 180 are integrally molded from a moldable material and are not detachable or separable from each other.

[0057] In use, the front side 150 is the side where the door cover 190 is opened by a user to receive or remove the aerosol-generating article 200 ; the rear side 160 is the side where the magnetic field generator 30 is arranged.

[0058] As shown in FIG1 and FIG2 , the housing of the heating device 100 includes:

[0059] The first shell 170 and the second shell 180 ; the first shell 170 is close to or defines the front side 150 , and the second shell 180 is close to or defines the rear side 160 .

[0060] In the embodiments of Figures 1 and 2, the heating device 100 and / or the outer shell of the heating device 100 is in a longitudinal cylindrical shape; and in the embodiments, the length of the heating device 100 and / or the outer shell of the heating device 100 is greater than the width, and the width is greater than the thickness, thereby making the heating device 100 and / or the outer shell of the heating device 100 configured to be flat.

[0061] In some embodiments, the length dimension of the heating device 100 and / or the shell of the heating device 100 is between 60 and 160 mm; and the width dimension of the heating device 100 and / or the shell of the heating device 100 is between 22 and 50 mm; and the thickness dimension of the heating device 100 and / or the shell of the heating device 100 is between 5 and 20 mm.

[0062] 2 , the aerosol-generating article 200 is generally configured in the shape of a sheet or flake; a sheet or flake can be characterized as the aerosol-generating article 200 having a length greater than or equal to a width, and a width at least three times or at least five times greater than a thickness.

[0063] Accordingly, the heating device 100 comprises:

[0064] A receiving cavity 510 is located within the housing; the receiving cavity 510 is substantially adapted to the shape of the aerosol-generating article 200 for receiving the aerosol-generating article 200. In some embodiments, the length of the receiving cavity 510 is greater than or equal to the width, and the width is greater than the thickness; and the receiving cavity 510 is arranged in a plane parallel to the longitudinal direction and the width direction of the heating device 100.

[0065] 1 and 2 , the receiving cavity 510 defines an opening 171 on the front side 150 of the housing. In an embodiment, the opening 171 is formed or defined by the first shell 170 of the housing. In use, the aerosol-generating article 200 can be removably received in or removed from the receiving cavity 510 through the opening 171.

[0066] As shown in FIG1 , FIG2 and FIG6 , the heating device 100 further includes:

[0067] The movable door cover 190 is movably coupled to the outer shell of the heating device 100 and can move relative to the outer shell to selectively move between an open position and a closed position; when the door cover 190 is in the open position, the opening 171 is opened to enable the user to removably receive the aerosol generating product 200 in the receiving chamber 510 or remove it; when the door cover 190 is in the closed position, the opening 171 is blocked and closed to prevent the user from removably receiving the aerosol generating product 200 in the receiving chamber 510 or removing it.

[0068] As shown in Figures 1, 2, and 6, the second housing 180 of the housing is provided with a longitudinally arranged pin 181 on the first side 130. A door cover 190 is hingedly connected to the housing via the pin 181 and can rotate about the pin 181, as indicated by arrow R1 in Figure 2. Furthermore, the door cover 190 can be selectively configured between an open position and a closed position by rotation, thereby selectively opening or closing the opening 171. Alternatively, in other alternative embodiments, the pin 181 can be disposed on the second side 140 of the housing; the door cover 190 is pivotally connected to the housing at the second side 140. Alternatively, in other alternative embodiments, the pin 181 can be located on the door cover 190.

[0069] Or in some other variant embodiments, the door cover 190 is attached to the surface of the front side 150 of the first shell 170 and can move linearly relative to the first shell 170 in the longitudinal direction; and then selectively configured between the open position and the closed position during the movement, thereby selectively opening or closing the opening 171.

[0070] As shown in Figures 2 to 5, the aerosol generating article 200 includes a first end 210 and a second end 220 that are opposite to each other along the length direction. In addition, the aerosol generating article 200 includes:

[0071] A first air inlet 251 and a second air inlet 252 isolated from each other are formed or defined at the second end 220;

[0072] A first air outlet 261 and a second air outlet 262 isolated from each other are formed or defined at the first end 210;

[0073] A first air channel R21 extends from the first air inlet 251 to the first air outlet 261, and a second air channel R22 extends from the second air inlet 252 to the second air outlet 262. The first air channel R21 and / or the second air channel R22 are arranged to extend along the length direction of the aerosol-generating article 200. The first air channel R21 and the second air channel R22 are isolated from each other. The first air channel R21 and / or the second air channel R22 extend straight.

[0074] As shown in Figures 2 to 5, the aerosol generating article 200 includes:

[0075] The outer body 230, which defines an enclosed volume, is rigid and is bounded by a cover plate 231 and a tray 232. Specifically, the cover plate 231 and the tray 232 are combined along the thickness direction of the aerosol-generating article 200 to form or define the outer body 230 of the aerosol-generating article 200. The tray 232 is provided with at least one or more discrete or arrayed cavities. Specifically, the cavities include at least one or more first cavities 271 spaced apart in the longitudinal direction and at least one or more second cavities 272 spaced apart in the longitudinal direction. At least one or more first cavities 271 are arranged along the first air passage R21, and at least one or more second cavities 272 are arranged along the second air passage R22.

[0076] In some embodiments, the cover plate 231 and the tray 232 are securely connected by means of an interference fit or a tight fit. In some embodiments, the cover plate 231 is provided with a separating flange 235 extending longitudinally from the first end 210 to the second end 220. When the cover plate 231 and the tray 232 are coupled together, the separating flange 235 separates the first air channel R21 from the second air channel R22. In some embodiments, the first air channel R21 and / or the first air inlet 251 and / or the first air outlet 261 are arranged on one side of the separating flange 235, while the second air channel R22 and / or the second air inlet 252 and / or the second air outlet 262 are arranged on the other side of the separating flange 235.

[0077] Multiple substrates 241 and aerosol-generating matrices 242 formed or bonded to each of the substrates 241 are arranged between the cover 231 and the tray 232. The substrates 241 are penetrated by the changing magnetic field, generating heat that in turn heats the aerosol-generating matrices 242 bonded thereto, generating aerosol. The aerosol-generating matrices 242 are solid or gel-like sheets or blocks.

[0078] In some embodiments, the aerosol-generating substrate 242 is sheet-shaped; the base 241 is disposed on only one side of the aerosol-generating substrate 242 .

[0079] In some embodiments, the substrate 241 is sheet-shaped. The substrate 241 has a thickness of approximately 0.03 to 1.0 mm. In a more preferred embodiment, the substrate 241 has a thickness of approximately 0.03 to 0.2 mm. In some specific embodiments, the substrate 241 has a thickness of 0.26 mm.

[0080] As shown in Figures 2 to 9, when the base 241 and the aerosol-generating substrate 242 are housed and arranged within the first cavity 271 and the second cavity 272, the base 241 is close to and facing the cover plate 231, and the aerosol-generating substrate 242 is close to and facing the tray 232. The aerosol-generating substrate 242 is located between the base 241 and the tray 232. Furthermore, the base 241 is flush with the surface of the tray 232 facing the cover plate 231. In use, a first air groove 2314 and a second air groove 2315 are arranged within the cover plate 231, located on either side of the separating ridge 235. The first air groove 2314 and the second air groove 2315 define a first air channel R21 and a second air channel R22, respectively, through the aerosol-generating article 200.

[0081] As shown in Figures 2 to 9 , the base 241 faces or is exposed to the first air passage R21 and the second air passage R22 . The aerosol generating substrate 242 is separated from the first air passage R21 / the second air passage R22 by the base 241 .

[0082] In some embodiments, aerosol-generating substrate 242 is a substrate capable of releasing volatile compounds that can form an aerosol. The volatile compounds can be released to form an aerosol by heating aerosol-generating substrate 242. In some typical embodiments, aerosol-generating substrate 242 is or can include a solid or gel at room temperature.

[0083] In some embodiments, the aerosol-generating substrate 242 may include one or more of powder, particles, shredded strips, ribbons, or flakes of one or more of herb leaves, tobacco leaves, homogenized tobacco, and expanded tobacco; or, the solid aerosol-generating substrate 242 may contain additional tobacco or non-tobacco volatile flavor compounds to be released when the substrate is heated.

[0084] In some embodiments, the aerosol-generating substrate 242 may include an active substrate; the active substrate includes or is derived from one or more plant products or components thereof; for example, in some specific embodiments, the active substrate includes plant leaves, bark, fibrous tissue, stems, roots, petals, fruits, etc.; for example, in one specific embodiment, the active substrate includes or is derived from one or more plant species or components, derivatives, or extracts thereof, and the plant species is tobacco. For example, in one specific embodiment, the active substrate includes a mixture of plants such as tobacco and Chinese herbal medicine. The active substrate may include tobacco or tobacco-containing materials; for example, the active substrate may include any of the following: tobacco leaves, tobacco leaf vein segments, reconstituted tobacco, homogenized tobacco, extruded tobacco, tobacco slurry, cast leaf tobacco, and expanded tobacco.

[0085] In some optional embodiments, the aerosol-generating substrate 242 further comprises a flavorant. The flavorant may comprise a volatile flavor component. For example, in typical embodiments, the flavorant may provide a flavor selected from menthol, lemon, vanilla, orange, wintergreen, cherry, and cinnamon. The flavorant may comprise a volatile tobacco flavoring compound that is released from the aerosol-generating substrate 242 upon heating.

[0086] In some optional embodiments, the aerosol-generating substrate 242 further includes an aerosol-forming agent or a smoke-generating agent, which facilitates the formation of a dense and stable aerosol during use. In some specific embodiments, the aerosol-forming agent or a smoke-generating agent is or includes at least one of glycerin, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and the like.

[0087] In some optional embodiments, the aerosol generating matrix 242 further includes: an adhesive; the adhesive promotes the bonding of the components in the aerosol generating matrix 242 during use; for example, in some specific embodiments, the adhesive is or includes at least one of gum arabic, casein, dextrin, sodium carboxymethyl cellulose, starch, polyvinyl alcohol, guar gum, etc.

[0088] In some optional embodiments, the aerosol-generating substrate 242 further comprises reinforcing fibers. The reinforcing fibers generally have a higher fiber strength than the tobacco plant fibers in the active substrate, thereby enhancing the strength and plasticity of the aerosol-generating substrate 242 during use. For example, in some specific embodiments, the reinforcing fibers include at least one of softwood fibers, hardwood fibers, hemp fibers or flax fibers, and bamboo fibers.

[0089] In a specific embodiment, the aerosol-generating matrix 242 includes: 65-90 wt% of active substrate, 3-10 wt% of reinforcing fiber, 0-5 wt% of adhesive, 5-15 wt% of flavor, and 10-20 wt% of aerosol former or smoke generator.

[0090] Or in another specific embodiment, the aerosol generating matrix 242 includes: 65-90 wt% of active substrate, 3-10 wt% of reinforcing fiber, 1-5 wt% of adhesive, 5-15 wt% of flavor, and 15-40 wt% of aerosol former or smoke generator.

[0091] In some embodiments, the aerosol-generating substrate 242 has an areal density of 20 to 150 g / m 2 .

[0092] In some embodiments, the thickness of the aerosol-generating substrate 242 is 0.1 to 0.6 mm. In some embodiments, the thickness of the aerosol-generating substrate 242 is greater than the thickness of the base 241 .

[0093] In some embodiments, the water content of the aerosol-generating substrate 242 is 6-14 wt %.

[0094] In some embodiments, aerosol-generating substrate 242 may include multiple sublayers. For example, in some optional embodiments, aerosol-generating substrate 242 may include a first sublayer and a second sublayer in a laminated or stacked arrangement. The first sublayer may include an active substrate, reinforcing fibers, an aerosol-forming agent, or a smoke-generating agent, while the second sublayer primarily includes a flavoring. During use, the first sublayer is used to generate the aerosol, while the second sublayer is used to adjust or modify the aerosol's flavor or aroma.

[0095] Alternatively, in some embodiments, the aerosol-generating substrate 242 having multiple sublayers may include a first sublayer and a second sublayer in a laminated or stacked arrangement. The first sublayer may include an active substrate, such as tobacco, and the second sublayer may include a flavoring agent and one or more functional additives such as an adhesive, a moisture barrier, a mildew inhibitor, and an antimicrobial agent. For example, the second sublayer may include 0-20 wt% of flavoring agents, 80-100 wt% of adhesives, 0-0.2 wt% of moisture barrier agents, 0-0.5 wt% of mildew inhibitors, and 0-0.5 wt% of antimicrobial agents.

[0096] In this embodiment, the adhesive of the second sublayer includes at least one of gum arabic, casein, dextrin, sodium carboxymethyl cellulose, starch, polyvinyl alcohol, and guar gum; the moisture-proof agent may include at least one of dimethyl fumarate, anhydrous calcium chloride, and a super absorbent resin; the mildew-proof agent includes at least one of biphenyl, o-phenylphenol, 2-pyridinethiol-1-zinc oxide, ammonium persulfate, and calcium phosphate; and the antibacterial agent may be a metal oxide or metal ion inorganic antibacterial agent.

[0097] In some other embodiments, the thickness of the second sublayer of the aerosol generating matrix 242 is 0.001 to 0.1 mm; during preparation, the second sublayer is coated on the substrate 241 by spraying, brushing, film transfer, etc., and then the first sublayer is combined with the surface of the second sublayer by rolling or casting to form a multi-sublayer aerosol generating matrix 242.

[0098] Alternatively, in yet other variations, the aerosol-generating substrate 242 may comprise a gel and / or a paste. A gel may be defined as a substantially dilute, cross-linked system that does not exhibit flow in a steady state. A paste may be defined as a viscous fluid such as a paste or slurry; for example, a paste may be a fluid that, at rest, has a dynamic viscosity greater than 1 Pa·s, 5 Pa·s, or 10 Pa·s.

[0099] In one embodiment, a recognizable marking is disposed on the aerosol-generating substrate 242 and / or the base 241. The marking may be arranged as a recognizable pattern; or in other variations, the marking may be a recognizable color, pattern, number, text, QR code, or the like. In some embodiments, the marking is used to provide an identification indication related to the unique properties of the aerosol-generating article 200. A user or the heating device 100 can obtain the unique properties of the aerosol-generating article 200 by identifying the marking.

[0100] In some embodiments, the unique properties of the aerosol-generating article 200 include various information about the aerosol-generating article 200, such as authenticity information, expiration date, and place of manufacture. In some embodiments, the various information about the aerosol-generating article 200 can be obtained through identification, thereby determining whether the aerosol-generating article 200 is authentic, when the aerosol-generating article 200 has expired, and where the aerosol-generating article 200 was manufactured. As a result, users may not inadvertently use an inauthentic aerosol-generating article 200, an expired aerosol-generating article 200, or an aerosol-generating article 200 from an unexpected source location.

[0101] In yet other embodiments, the unique properties of the aerosol-generating article 200 may include the flavor of the flavorant contained in the aerosol-generating substrate 242, such as peach, mint, or orange.

[0102] As another example, in some embodiments, a unique property of the aerosol-generating article 200 may include the strength of nicotine contained in the aerosol-generating substrate 242 , such as the nicotine content.

[0103] In the embodiments shown in Figures 2 and 3, substrate 241 is rigid or hard. In some embodiments, substrate 241 is made of a receptive metal or alloy; thus, during use, substrate 241 can be heated by electromagnetic induction or by being penetrated by a changing magnetic field, which in turn heats aerosol-generating matrix 242 to produce aerosol. In some specific embodiments, the receptive metal or alloy used to prepare or form substrate 241 is, for example, at least one of iron or an iron alloy, nickel or a nickel alloy, cobalt or a cobalt alloy, graphite, ordinary carbon steel, stainless steel, ferritic stainless steel, and permalloy. In some specific embodiments, substrate 241 comprises permalloy with an alloy grade of 1J50 or 1J85; for example, the mass percentage of iron in permalloy substrate 241 is between 15% and 85% by weight, and the mass percentage of nickel does not exceed 85% by weight.

[0104] Specifically, as shown in Figures 2 to 5, the plurality of substrates 241 are accommodated and held in the plurality of first concave cavities 271 and the plurality of second concave cavities 272. The plurality of substrates 241 located in the first concave cavities 271 are exposed to or located in the first air passage R21, and the aerosol generated thereby can be output from the first air passage R21 to the first air outlet 261; and the plurality of substrates 241 located in the second concave cavities 272 are exposed to or located in the second air passage R22.

[0105] In some embodiments, the cover plate 231 and / or the tray 232 are made of a material with low thermal conductivity and low mass heat capacity, such as zirconium oxide, glass, or PEEK (polyetheretherketone), and their long-term temperature resistance needs to be no less than 250° C. Alternatively, in some alternative embodiments, the cover plate 231 and / or the tray 232 include or are made of paper; for example, the cover plate 231 and / or the tray 232 include fiber paper made from wood fiber, hemp fiber, flax fiber, bamboo fiber, or the like.

[0106] In some embodiments, the base 241 may be in a mesh shape having meshes 2411 .

[0107] As shown in FIG6 to FIG9 , the heating device 100 further includes:

[0108] The battery core 10 is arranged between the receiving cavity 510 and the distal end 120 in the longitudinal direction to supply power to the heating device 100 and / or the magnetic field generator 30;

[0109] The charging circuit board 23 is located between the battery cell 10 and the distal end 120 ; a charging IC (i.e., a charging management chip) is arranged on the charging circuit board 23 to control the charging of the battery cell 10 through the charging interface 121 ;

[0110] The main circuit board 20 integrates or arranges a control circuit or MCU controller; the main circuit board 20 includes a first portion 21 and a second portion 22 arranged in the longitudinal direction; at least a portion of the second portion 22 is located between the battery cell 10 and the rear side 160; the first portion 21 is at least partially located between the receiving cavity 510 and / or the magnetic field generator 30 and the rear side 160.

[0111] In some embodiments, the charging circuit board 23 is connected to the second portion 22 of the main circuit board 20 via conductive leads or laminated conductive traces, etc. Also, the battery cell 10 abuts against and is connected to the second portion 22 of the main circuit board 20 .

[0112] The first portion 21 of the main circuit board 20 is provided with an MCU controller, etc., for controlling the power supply to the magnetic field generator 30. Alternatively, the first portion 21 of the main circuit board 20 is used to control the power supply to the magnetic field generator 30. Specifically, for example, the magnetic field generator 30 includes or is the magnetic field generator 30; the first portion 21 of the main circuit board 20 is provided with at least one inverter circuit for converting the direct current output by the battery cell 10 into an alternating current that is provided to the at least one magnetic field generator 30, thereby causing the magnetic field generator 30 to generate a varying magnetic field. In some embodiments, the at least one inverter circuit includes at least one capacitor, which is operable to form an LC oscillator with the at least one magnetic field generator 30. The oscillation of the LC oscillator generates the alternating current provided to the at least one magnetic field generator 30.

[0113] As shown in FIG. 2 to FIG. 8 , the heating device 100 further includes:

[0114] The first bracket 50 at least partially defines a receiving cavity 510 for receiving and accommodating the aerosol-generating article 200. At least a portion of the first bracket 50 is disposed between the magnetic field generator 30 and the front side 150. The first bracket 50 is at least partially concave in shape, surrounding and defining the receiving cavity 510. In some embodiments, the first bracket 50 is made of a non-receptive rigid material; for example, the first bracket 50 is made of a polymer plastic or ceramic.

[0115] As shown in FIG. 2 to FIG. 8 , the suction nozzle 111 is hollow; the suction nozzle 111 has an air inlet 113 at the proximal end 110 ; and an air outlet channel 112 is arranged inside the suction nozzle 111 .

[0116] The air outlet channel 112 is in airflow communication with the receiving chamber 510 through a first air outlet opening 513 and a second air outlet opening 514 arranged on the bracket 50, thereby outputting the aerosol to the inhalation port 113, as indicated by arrow R30 in Figure 5. The first air outlet opening 513 and the second air outlet opening 514 are arranged on the side of the receiving chamber 510 facing the proximal end 110.

[0117] As shown in Figures 2 to 6, the first bracket 50 is further provided with a first air inlet 515 and a second air inlet 516 on the other side of the distal end 120, for supplying air into the receiving cavity 510 during suction. As shown in Figures 2 to 5, the first side 130 of the housing is provided with a first air inlet 131 for supplying external air during suction; the second side 140 of the housing is provided with a second air inlet 141. The first bracket 50 also has an extension portion 52 extending toward the distal end 120 and / or the battery cell 10. In an embodiment, the extension portion 52 is located between the receiving cavity 510 and the battery cell 10. In an embodiment, the extension portion 52 is hollow and has at least one cavity therein.

[0118] As shown in FIG. 2 to FIG. 8 , the extension portion 52 of the first bracket 50 is further provided with:

[0119] A first air intake passage R11 extending from the first air intake port 131 to the first air intake communication port 515;

[0120] The second air intake passage R12 extends from the second air intake port 141 to the second air intake communication port 516 .

[0121] 6 to 8 , when the aerosol-generating article 200 is received in the receiving cavity 510 of the first holder 50, the first air inlet 251 of the second end 220 of the aerosol-generating article 200 is aligned with and in airflow communication with the first air inlet opening 515; and the second air inlet 252 of the second end 220 of the aerosol-generating article 200 is aligned with and in airflow communication with the second air inlet opening 515. Furthermore, as shown in FIG5 , when the aerosol-generating article 200 is received in the receiving cavity 510 of the first holder 50, the first air outlet 261 of the first end 210 of the aerosol-generating article 200 is aligned with and in airflow communication with the first air outlet opening 513; and the second air outlet 262 of the first end 210 of the aerosol-generating article 200 is aligned with and in airflow communication with the second air outlet opening 514.

[0122] Furthermore, in use, the first air inlet channel R11 of the first support 50, the first air channel R21 of the aerosol-generating article 200, and the air outlet channel 112 within the mouthpiece 111 collectively define a first airflow channel extending from the first air inlet 131 to the inhalation port 113. Furthermore, the first airflow channel passes through the aerosol-generating article 200, thereby delivering aerosol generated by the plurality of aerosol-generating substrates 242 located in the first airflow channel to the inhalation port 113. Furthermore, in use, the second air inlet channel R12 of the first support 50, the second air channel R22 of the aerosol-generating article 200, and the air outlet channel 112 within the mouthpiece 111 collectively define a second airflow channel extending from the second air inlet 141 to the inhalation port 113. Furthermore, the second airflow channel passes through the aerosol-generating article 200, thereby delivering aerosol generated by the plurality of aerosol-generating substrates 242 located in the first airflow channel to the inhalation port 113.

[0123] In an embodiment, the first air flow channel is isolated from the second air channel R22 of the aerosol-generating article 200 ; and the second air flow channel is isolated from the first air channel R21 of the aerosol-generating article 200 .

[0124] As for the connection and communication structure between the various portions of the first airflow channel and / or the second airflow channel, the extension portion 52 of the first bracket 50 is provided with a first joint 521 extending along the width direction toward the first side 130, and a second joint 522 extending along the width direction toward the second side 140. The first joint 521 is used to connect the first air inlet channel R11 with the first air inlet port 131; the second joint 522 is used to connect the second air inlet channel R12 with the second air inlet port 141.

[0125] As shown in FIG. 6 to FIG. 8 , a partition wall 53 is further arranged in the extension portion 52 and extends toward and terminates at the end 530 , so as to separate the first air intake passage R11 from the second air intake passage R12 .

[0126] As shown in FIG. 2 to FIG. 6 , the heating device 100 further includes:

[0127] The second bracket 40 is used to accommodate and support the magnetic field generator 30. The second bracket 40 is arranged near the rear side 160; or the second bracket 40 is located between the magnetic field generator 30 and the second housing 180. Specifically, after assembly, the first bracket 50 and the second bracket 40 accommodate and retain the magnetic field generator 30 therebetween.

[0128] As shown in Figures 2 to 6 , the surface of the second bracket 40 facing the front side 150 and / or the first bracket 50 is provided with an annular ridge 41 and an annular ridge 42. The annular ridge 41 and the annular ridge 42 define at least one or more accommodating cavities 43. After assembly, the multiple magnetic field generators 30 are accommodated and installed in the accommodating cavities 43, and are then surrounded by the annular ridges 41. The annular ridges 41 also have several notches for the conductive leads of the magnetic field generators 30 to pass through the notches to the outside of the annular ridge 41, then pass through the second bracket 40 and connect to the main circuit board 20.

[0129] As shown in FIG6 to FIG8, the heating device 100 further includes:

[0130] At least one or more magnetic field generators 30 are disposed between the receiving cavity 510 and the rear side 160; the at least one or more magnetic field generators 30 can be powered by the main circuit board 20. In the embodiment shown in Figures 2 to 8, the at least one or more magnetic field generators 30 are configured as electromagnetic induction heaters capable of generating a varying magnetic field to induce heating of the substrate 241 of the aerosol-generating article 200 through the magnetic field. When the aerosol-generating article 200 is received in the receiving cavity, the at least one or more magnetic field generators 30 induce heating of the aerosol-generating article 200 through the generated magnetic field.

[0131] Specifically, as shown in Figures 2 to 9, when the aerosol-generating article 200 is received in the receiving cavity 510, each of the multiple magnetic field generators 30 is respectively opposite to each of the aerosol-generating substrates 242 and / or the bases 241, so that each magnetic field generator 30 can heat the relative base 241.

[0132] In the embodiments shown in Figures 2 to 9 , the magnetic field generator 30 is substantially planar. In one embodiment, the magnetic field generator 30 comprises a planar spiral coil 30. Furthermore, the substrate 241 is planar. When the aerosol-generating article 200 is received in the receiving chamber, the magnetic field generator 30 is arranged substantially parallel to the substrate 241. In Figures 2 to 9 , the planar spiral coil 30 and / or the substrate 241 are circular in shape; alternatively, in other alternative embodiments, the planar spiral coil 30 and / or the substrate 241 are square, oval, or the like.

[0133] In some embodiments, when the aerosol-generating article 200 is received in the receiving chamber, the planar spiral coil 30 is arranged substantially parallel to the substrate 241. Furthermore, the spacing between the planar spiral coil 30 and the substrate 241 is less than 15 mm; more preferably, the spacing between the planar spiral coil 30 and the substrate 241 is less than 10 mm. In some embodiments, the spacing between the planar spiral coil 30 and the substrate 241 is less than the diameter of the planar spiral coil 30.

[0134] In some embodiments, at least one or more planar spiral coils 30 are arranged discretely or in an array.

[0135] In some embodiments, at least one or more planar spiral coils 30 can be independently connected to the first portion 21 of the main circuit board 20 and can be independently powered by the main circuit board 20. For example, in some embodiments, multiple planar spiral coils 30 are connected to the main circuit board 20, and the main circuit board 20 can independently supply alternating current to each of the planar spiral coils 30, causing each of the planar spiral coils 30 to independently generate magnetic fields, thereby independently initiating heating. For example, in some embodiments, several or more planar spiral coils 30 are independently activatable, allowing each planar spiral coil 30 to independently heat the substrate 241 facing the coil, thereby heating the aerosol-generating substrate 242 on the substrate 241 and generating aerosol. For another example, in some embodiments, the main circuit board 20 is configured to control the heating of the several or more planar spiral coils 30 to be sequentially activated in a predetermined order. In some embodiments, the main circuit board 20 is configured to control the heating of the several or more planar spiral coils 30 to be initiated at different times, such that, for example, during each puff by a user, the main circuit board 20 controls only one planar spiral coil 30 to activate heating to generate aerosol sufficient for a single puff. In some embodiments, during each puff, the main circuit board 20 controls one of the several planar spiral coils 30 to heat a substrate 241 of the aerosol-generating article 200 individually, and the amount of total particulate matter (TPM) generated may be at least 1.5 mg, at least 1.7 mg, at least 2.0 mg, at least 2.5 mg, at least 3.0 mg, about 1.0 mg to about 5.0 mg, about 1.5 mg to about 4.0 mg, about 2.0 mg to about 4.0 mg or about 2.0 mg to about 3.0 mg, at least 3 mg to about 7 mg, about 4 mg to about 8 mg, and about 5 mg to about 10 mg.

[0136] 2 to 9 , the plurality of planar spiral coils 30 are substantially discretely arranged and substantially all located in the same plane.

[0137] In some embodiments, during multiple puffs by a user, the main circuit board 20 controls a predetermined sequence of the planar spiral coils 30, sequentially activating heating one after another. Specifically, for example, as shown in Figures 2 to 7 , during the user's first puff, the main circuit board 20 provides power to the first planar spiral coil 30 closest to the left (from top to bottom) for heating, thereby heating the opposing substrate 241 and aerosol-generating substrate 242 to generate aerosol for one puff. During the user's next puff, the main circuit board 20 provides power to the second planar spiral coil 30 closest to the left (from top to bottom) for heating, thereby heating the opposing substrate 241 and aerosol-generating substrate 242 to generate aerosol for one puff. This process continues in this order until all planar spiral coils 30 are heated and all aerosol-generating substrate 242 in the aerosol-generating article 200 is consumed, prompting the user to replace the aerosol-generating article 200. In the above implementation, activating the planar spiral coils 30 individually in sequence rather than simultaneously for heating minimizes unnecessary consumption of the aerosol-generating substrate and reduces energy waste. Alternatively, in other implementations, the order in which the planar spiral coils 30 are activated in a predetermined sequence is along the direction of the array arrangement.

[0138] Alternatively, in some alternative implementations, the main circuit board 20 controls the multiple planar spiral coils 30 to be individually activated sequentially, without interruption along the arrangement direction of the planar spiral coils 30. Alternatively, in some alternative implementations, the main circuit board 20 controls the multiple planar spiral coils 30 to be individually activated sequentially, with interruptions or in a skipped manner.

[0139] In some embodiments, several or more planar helical coils 30 can be energized sequentially, ie, once per user puff, to consistently generate aerosol on a puff-by-puff basis.

[0140] In some embodiments, the heating device 100 includes:

[0141] An airflow sensor (not shown), such as a microphone or MEMS sensor, is used to sense the user's puffing action. Based on the sensing results of the airflow sensor, the main circuit board 20 sequentially supplies energy to one or more planar spiral coils 30. In a preferred embodiment, the main circuit board 20 controls the sequential activation of the planar spiral coils 30 in a predetermined order, which is performed based on the user's puffing action. In other variations, the main circuit board 20 controls the sequential activation of the planar spiral coils 30 in accordance with a predetermined interval; for example, the predetermined interval is between approximately 30 seconds and 300 seconds.

[0142] In some embodiments, the main circuit board 20 controls the plurality of planar spiral coils 30 to be activated sequentially in a predetermined order based on the removal or replacement of the aerosol-generating article 200. Specifically, in some embodiments, after the main circuit board 20 controls the planar spiral coils 30 to be activated sequentially, the user is notified that the aerosol-generating article 200 has been consumed and is prompted to replace the aerosol-generating article 200 with a new one.

[0143] Alternatively, in some embodiments, upon detecting that a new aerosol-generating article 200 has been re-received into the receiving chamber of the heating device 100, the planar spiral coils 30 are reactivated sequentially according to a predetermined sequence. Detection of a user replacing an aerosol-generating article 200 with a new one can be performed using a sensor; for example, the aerosol-generating device can be provided with a light sensor or a pressure sensor to sense the engagement or removal of the aerosol-generating article 200 into or from the receiving chamber, and to determine the user's replacement or consumption of the aerosol-generating article 200 based on the engagement or removal.

[0144] In some embodiments, the main circuit board 20 controls the sequential activation of the planar spiral coils 30 in a cyclical manner. For example, in some embodiments, the cycle repeats a predetermined number of times, such as six times. Specifically, when the number of activations of the planar spiral coils 30 and / or the number of puffs taken by the user reaches a predetermined number, a new cycle begins, controlling the sequential activation of the planar spiral coils 30. For another example, in some embodiments, the cycle repeats according to the removal or replacement of the aerosol-generating article 200.

[0145] In some embodiments, the main circuit board 20 controls the planar spiral coils 30 to generate a magnetic field to induce heating of the opposing substrates 241 according to the same heating curve. For example, in some specific embodiments, the main circuit board 20 controls the generation of a magnetic field to induce heating of the opposing substrates 241 to a temperature of 300°C. Alternatively, in other variations, the main circuit board 20 controls the planar spiral coils 30 to induce heating of the opposing substrates 241 according to different heating curves or heating temperatures. For example, in some implementations, the main circuit board 20 controls the planar spiral coils 30 to induce the heating temperatures of the opposing substrates 241 to increase or decrease sequentially along the heating start sequence.

[0146] For example, in some embodiments, the main circuit board 20 is configured to sequentially supply power to the planar spiral coil 30 at a given power level, causing the opposing substrate 241 to reach an operating temperature within a predetermined time. For example, each time the main circuit board 20 supplies power to the planar spiral coil 30, the opposing substrate 241 reaches a temperature of at least 200°C, at least 300°C, or at least 400°C within 0.5 seconds, maintains the temperature for approximately 2.5 seconds, and then stops.

[0147] In some embodiments, the planar spiral coil 30 is helically wound from a low-resistivity wire material, such as a conductive copper wire or silver wire. In some embodiments, the wire material used to wind the planar spiral coil 30 has a circular cross-sectional shape; in other embodiments, the wire material used to wind the planar spiral coil 30 has a rectangular, oval, or triangular cross-sectional shape. In some embodiments, the wire material used to wind the planar spiral coil 30 is a Litz wire having multiple or multiple conductive filaments.

[0148] Alternatively, in some alternative embodiments, the planar spiral coil 30 is a track or line formed on a planar substrate by printing, depositing, or spraying a conductive paste. For example, in some specific embodiments, the planar spiral coil 30 is formed as a thin layer by printing, depositing, or spraying on a rigid or flexible electrically insulating substrate such as ceramic, glass, quartz, or PI film.

[0149] In some embodiments, when the aerosol-generating article 200 is received in the receiving cavity 510 , the base 241 is opposite to the planar spiral coil 30 . More preferably or precisely, the center of the base 241 is aligned with the center of the planar spiral coil 30 .

[0150] In some embodiments, the shape of the base 241 is identical to that of the planar spiral coil 30. In Figures 2 to 8 , the base 241 is circular; the planar spiral coil 30 is also circular. Furthermore, the diameter of the base 241 is substantially equal to that of the planar spiral coil 30. For example, in some embodiments, the base 241 has a diameter of approximately 6 to 12 mm; the planar spiral coil 30 also has a diameter of approximately 6 to 12 mm. The projection of the base 241 onto the plane of the planar spiral coil 30 substantially overlaps with the planar spiral coil 30. Alternatively, the overlap area of ​​the base 241 onto the plane of the planar spiral coil 30 and the planar spiral coil 30 accounts for greater than 85% of the area of ​​the planar spiral coil 30. More preferably, the overlap of the base 241 onto the plane of the planar spiral coil 30 and the planar spiral coil 30 exceeds 90%, which is beneficial for reducing magnetic flux leakage.

[0151] As shown in Figures 2 to 5, a plurality of meshes 2411 are arranged on the substrate 241, thereby making the substrate 2411 fluid-permeable. In some embodiments, the substrate 241 having the meshes 2411 is formed by mechanically punching, chemically etching, laser drilling, etc. in a dense sheet precursor; mechanical drilling can be performed by stamping, drilling with a drill, etc. The mesh-like substrate 241 is advantageous in that heat on the substrate 241 can be more evenly formed and distributed during hysteresis heating. In some embodiments, the meshes 2411 are square in shape, and the side length of the square meshes 2411 is between 0.5 and 1.5 mm; more preferably, the side length of the meshes 2411 is between 1.0 and 1.4 mm.

[0152] In some embodiments, the ratio of the area of ​​the mesh 2411 on the substrate 241 to the area of ​​the circular substrate 241 is greater than 25%; in some specific embodiments, the ratio of the area of ​​the mesh 2411 on the substrate 241 to the area of ​​the substrate 241 is between 30% and 60%.

[0153] As shown in Figures 2 to 9 , the aerosol-generating article 200 can only be received in the receiving cavity 510 in a predetermined orientation. Specifically, the outer body 230 of the aerosol-generating article 200 is asymmetrically arranged in both the length and width directions. The substantially square outer body 230 has a cutout 260 at one corner. In an embodiment, the cutout 260 of the outer body 230 is defined by the cover 231 and the tray 232. Accordingly, the receiving cavity 510 has an inclined boundary 511 that mates with the cutout 260. Thus, in use, the aerosol-generating article 200 can only be received in the receiving cavity 510 in a predetermined orientation, such as the predetermined orientation shown in Figure 2 . Furthermore, the inclined boundary 511 is configured to abut or mate with the cutout 290 of the aerosol-generating article 200.

[0154] As shown in Figures 2 to 9 , when the aerosol-generating article 200 is received in the receiving chamber 510 in a predetermined orientation, the cover plate 231 of the outer body 230 is oriented toward or near the front side 150, and the tray 232 is oriented toward or near the rear side 160 / the planar spiral coil 30. During use, the aerosol-generating substrate 242, heated by the substrate 241, generates aerosol that passes through the mesh 2411 of the substrate 241 and is released into the first air passage R21 and / or the second air passage R22, as indicated by arrow R4 in Figure 4 . In this embodiment, the aerosol-generating substrate 242 provides insulation between the tray 232 and the substrate 241, thereby preventing heat transfer from the substrate 241 to the tray 232. Furthermore, the first air passage R21 and / or the second air passage R22 provide thermal insulation between the substrate 241 and the cover plate 231, thereby preventing heat transfer from the substrate 241 to the cover plate 231. In this embodiment, the first side surface and the second side surface of the substrate 241 opposite to each other in the thickness direction are not in contact with the outer body 230 of the aerosol-generating article 200 , thereby maximally preventing heat transfer therebetween.

[0155] 10 and 11 show schematic diagrams of an aerosol-generating article 200a in an aerosol-generating system according to yet another embodiment. In this embodiment, the substantially sheet-shaped aerosol-generating article 200a comprises:

[0156] an outer body defining an outer surface of the aerosol-generating article 200a; and the outer body comprising a cover plate 231a and a tray 232a facing each other in a thickness direction; the tray 232a having a first air outlet 261a and a second air outlet 262a isolated from each other arranged at a first end; and the tray 232a having a first air inlet 251a and a second air inlet 252a isolated from each other arranged at a second end;

[0157] The tray 232a is further provided with a plurality of first concave cavities 271a located between the first air inlet 251a and the first air outlet 261a, and a plurality of second concave cavities 272a located between the second air inlet 252a and the second air outlet 262a on the surface thereof facing the cover plate 231a. The plurality of first concave cavities 271a and / or the plurality of second concave cavities 272a are arranged at intervals in the longitudinal direction of the aerosol-generating article 200a.

[0158] Multiple substrates 241a are respectively arranged in the first cavity 271a and the second cavity 272a; multiple aerosol generating substrates 242a are respectively combined on the multiple substrates 241a; during use, each of the substrates 241a is penetrated by the changing magnetic field and generates heat, thereby heating an aerosol generating substrate 242a combined thereon to generate aerosol.

[0159] A groove extending from a first end to a second end is arranged on the surface of the cover plate 231a facing the tray 232a; when the cover plate 231a is combined with the tray 232a, the groove of the cover plate 231a defines a first air channel from the first air inlet 251a to the first air outlet 261a, and a second air channel from the second air inlet 252a to the second air outlet 262a.

[0160] In this embodiment, substrate 241a is positioned between aerosol-generating substrate 242a and tray 232a. Aerosol-generating substrate 242a includes a first side surface bonded to substrate 241a and a second side surface facing away from the first side surface. The second side surface is exposed to the first air channel or the second air channel. Substrate 241a is heated from the first side surface of aerosol-generating substrate 242a, and aerosol generated by the heated aerosol-generating substrate 242a is released from the second side surface. In this embodiment, the heated aerosol does not pass through substrate 241a. Accordingly, substrate 241a can be a mesh with mesh holes as shown in FIG. 10 , or it can be dense.

[0161] 10 and 11 , when the aerosol-generating article 200a is received in the heating device 100 in a predetermined orientation, the cover 231a is toward or near the front side 150a and the tray 232a is toward or near the rear side 160a / the planar spiral coil 30 .

[0162] As shown in Figures 10 and 11 , the tray 232a has at least one centrally located first support protrusion 273a and a plurality of second support protrusions 274a circumferentially surrounding the first support protrusion 273a arranged on the bottom walls of the first and second concave cavities 271a, 272a. When the base 241a is accommodated or installed in the first and / or second concave cavities 271a, 272a, the plurality of second support protrusions 274a of the first support protrusion 273a provide support for the base 241a. After assembly, the base 241a rests against the plurality of second support protrusions 274a of the first support protrusion 273a, defining a gap 275a between the base 241a and the tray 232a. The gap 275a provides thermal insulation between the base 241a and the tray 232a, thereby minimizing heat transfer from the base 241a to the tray 232a.

[0163] As shown in FIG. 10 and FIG. 11 , the first supporting protrusion 273 a is in the shape of a cross star; and the plurality of second supporting protrusions 274 a are in the shape of convex dots.

[0164] It should be noted that the specification and drawings of this application provide preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Furthermore, it is possible for a person skilled in the art to make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An aerosol-generating product, characterized in that include: an outer body defining an outer surface of the aerosol-generating article; the outer body comprising a cover plate and a tray facing each other, and an air passage formed between the cover plate and the tray; at least one or more recessed cavities are arranged on a side of the tray facing the cover plate; A substrate and an aerosol-generating substrate are contained in the at least one or more cavities; the substrate is configured to be penetrated by a changing magnetic field and generate heat, thereby heating the aerosol-generating substrate to generate aerosol; The substrate is provided with a plurality of meshes so as to make the substrate fluid permeable, and the aerosol generating substrate is located between the tray and the substrate; in use, the aerosol generating substrate is heated to generate an aerosol which passes through the meshes of the substrate and is released into the air channel.

2. The aerosol-generating article according to claim 1, wherein The base includes a first side surface close to the cover plate and a second side surface close to the tray; The first side surface and the second side surface are in non-contact with the external body, thereby reducing the transfer of heat from the base to the external body.

3. The aerosol-generating article according to claim 2, wherein The first side surface is exposed to the air passage; The aerosol-generating substrate is bonded to the second side surface of the base.

4. An aerosol-generating article according to any one of claims 1 to 3, wherein The base is substantially circular, and the meshes are square.

5. The aerosol-generating article according to any one of claims 1 to 3, wherein The ratio of the area of ​​the mesh on the substrate to the area of ​​the substrate is greater than 25%.

6. The aerosol-generating article according to claim 5, wherein The area ratio of the mesh holes on the substrate to the area of ​​the substrate is between 30% and 60%.

7. An aerosol-generating product, characterized in that include: an outer body defining an outer surface of the aerosol-generating article; the outer body comprising a cover plate and a tray facing each other, and an air passage formed between the cover plate and the tray; at least one or more recessed cavities are arranged on a side of the tray facing the cover plate; A substrate and an aerosol-generating substrate are contained in the at least one or more cavities; the substrate is configured to be penetrated by a changing magnetic field and generate heat, thereby heating the aerosol-generating substrate to generate aerosol; The aerosol generating substrate is exposed in the air channel, and the substrate is located between the aerosol generating substrate and the tray; the tray is also provided with a supporting protrusion located in the at least one or more concave cavities; the substrate rests on the supporting protrusion, thereby forming or defining a gap with the tray to reduce the transfer of heat from the substrate to the tray.

8. The aerosol-generating article according to claim 7, wherein The support protrusions include a first support protrusion close to the center of the cavity and a plurality of second support protrusions arranged at intervals in a circumferential direction around the first support protrusion.

9. An aerosol generating system, characterized in that include: A replaceable aerosol-generating article comprising the aerosol-generating article according to any one of claims 1 to 8; Reusable heating unit includes: Front and back sides facing away from each other; a receiving chamber configured to receive the aerosol-generating article in a predetermined orientation; when the aerosol-generating article is received in the receiving chamber in the predetermined orientation, the cover is close to the front side and the tray is close to the rear side; A planar spiral coil is located between the receiving cavity and the back side; when the aerosol-generating article is received in the receiving cavity, the planar spiral coil is arranged substantially parallel to and spaced apart from the substrate, and the planar spiral coil is configured to generate a changing magnetic field that penetrates the substrate.

10. An aerosol generating system according to claim 9, wherein When the aerosol generating article is received in the receiving cavity in a predetermined direction, the area of ​​the portion where the projection of the substrate on the plane where the planar spiral coil is located overlaps with the planar spiral coil accounts for more than 85% of the area of ​​the planar spiral coil.

11. An aerosol-generating article, characterized in that include: an outer body defining an outer surface of the aerosol-generating article; the outer body comprising an air passage extending longitudinally therethrough; A sheet-shaped substrate and a sheet-shaped aerosol-generating matrix are located within the outer body; the substrate is configured to be penetrated by a changing magnetic field and generate heat, thereby heating the aerosol-generating matrix to generate aerosol; the substrate includes a first side surface and a second side surface opposite to each other; the first side surface is exposed to the air passage, and the aerosol-generating matrix is ​​located between the second side surface and the outer body; The substrate is provided with a plurality of meshes so as to make the substrate fluid-permeable; in use, the aerosol generated by heating the aerosol-generating substrate passes through the meshes of the substrate and is released into the air channel.

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