Aerosol-generating article

Abstract

The present application relates to an aerosol-generating article, comprising: a plurality of aerosol bodies arranged spaced apart from each other, wherein each aerosol body comprises an aerosol substrate configured to generate aerosol upon heating; and a housing having airflow channels inside and comprising a first side wall and a second side wall that are arranged in a non-coplanar manner, wherein the plurality of aerosol bodies are accommodated in the housing, with some of the aerosol bodies being retained on the first side wall, and some of the aerosol bodies being retained on the second side wall; and a plurality of aerosol substrates are all in fluid communication with the airflow channels.

Description

Aerosol-generating article

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application No. 202411069507.2 filed on August 5, 2024, and entitled “Aerosol-generating article”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of aerosol generation, and in particular, to an aerosol-generating article. BACKGROUND

[0004] An aerosol-generating device is a device that can make an aerosol generated by an aerosol-generating article when the aerosol-generating article is heated without combustion for a user to inhale. In some exemplary prior art, there is an aerosol-generating article comprising a substrate, a cover plate and a tobacco sheet, the substrate is provided with a containing groove, the tobacco sheet is contained in the containing groove, and the cover plate is engaged with the substrate to have a gap space between the two, the gap space is in fluid communication with the tobacco sheet and forms an airflow passage capable of transmitting aerosol.

[0005] The aerosol-generating article needs to meet the requirements of multiple puffs of a user, and the volatile substances in one tobacco sheet are limited, so that the amount of aerosol generated is not enough to meet the requirements of the number of puffs of the user. Therefore, the tobacco sheet usually has multiple, and the multiple tobacco sheets generate aerosol in turn. The aerosol generated by each tobacco sheet needs to be transmitted to be inhaled by the user, resulting in that the more the tobacco sheets, the larger the space of the airflow passage, and the worse the taste of each puff. SUMMARY

[0006] The purpose of the present application is to provide an aerosol-generating article that can significantly improve the proportion of aerosol in the airflow.

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

[0008] A plurality of aerosol bodies are arranged at intervals, the aerosol bodies comprising aerosol substrates for generating aerosol after being heated;

[0009] A housing has an airflow passage inside; the housing comprises a first side wall and a second side wall arranged non-coplanarly, a plurality of the aerosol bodies are contained in the housing, and part of the aerosol bodies are retained on the first side wall and part of the aerosol bodies are retained on the second side wall; a plurality of the aerosol substrates are in fluid communication with the airflow passage.

[0010] As an example, the airflow passage has a substantially rectangular cross-section and satisfies at least one of the following conditions:

[0011] the width of the airflow passage is less than 15 mm; or

[0012] the height of the airflow passage is less than 3 mm; or

[0013] the difference between the width of the airflow passage and the width of the aerosol substrate is less than 5 mm; or

[0014] the difference between the width of the airflow passage and the width of the aerosol substrate is less than 1 / 2 of the width of the aerosol substrate.

[0015] As one example, the first side wall and the second side wall are oppositely arranged.

[0016] As one example, the housing includes a first port, and the aerosol generating article further includes a gas permeable wall arranged at the first port, the gas permeable wall being configured to allow external air to enter the airflow passage; or

[0017] the housing includes a first port arranged in an open manner, the first port being configured to allow external air to enter the airflow passage; or

[0018] the housing includes a second port arranged in an open manner, the second port being configured to allow gas in the airflow passage to flow out of the housing.

[0019] As one example, the housing is made of paper.

[0020] As one example, the housing is substantially a square box shape, and the housing includes a second port, and the aerosol generating article further includes a sealing wall blocking the second port; the aerosol generating article further includes a mouthpiece fixed to the sealing wall and in fluid communication with the airflow passage.

[0021] As one example, the aerosol generating article further includes a gas impermeable layer arranged to cover a surface of the housing side wall; or

[0022] the housing is made of paper capable of preventing gas permeation.

[0023] As one example, the aerosol generating article includes a heating element arranged to correspond to the aerosol body, the heating element contacting the aerosol substrate of the aerosol body.

[0024] As one example, the heating element includes a fixing portion at least partially embedded in the first side wall and / or the second side wall.

[0025] As an example, the aerosol generating article further comprises a fixing member for defining a boundary of the airflow passage portion, and the aerosol body is located between the fixing member and the shell;

[0026] The fixing member comprises a holding portion and a through hole, the holding portion covers a part of the aerosol body to keep the aerosol body on the side wall of the shell, and the aerosol substrate is in fluid communication with the airflow passage through the through hole.

[0027] As an example, the fixing member is configured to be capable of absorbing liquid.

[0028] As an example, the aerosol generating article further comprises a limiting member arranged between the fixing member and the side wall of the shell, the limiting member is provided with a limiting hole, and at least a part of the aerosol substrate is located in the limiting hole.

[0029] As an example, the limiting member is bonded to the side wall of the shell; and / or

[0030] The holding portion is bonded to the limiting member.

[0031] As an example, at least one of the fixing member, the limiting member and the shell is made of paper material; and / or

[0032] At least two of the fixing member, the limiting member and the shell are made of the same material.

[0033] The aerosol generating article provided by the above embodiments comprises a plurality of aerosol bodies arranged at intervals, and further comprises a shell for accommodating the plurality of aerosol bodies; the aerosol body comprises an aerosol substrate for generating aerosol after heating; the shell has an airflow passage inside, and the shell comprises a first side wall and a second side wall arranged in a non-coplanar manner, the plurality of aerosol bodies are accommodated in the shell at intervals, and part of the aerosol bodies are kept on the first side wall and part of the aerosol bodies are kept on the second side wall, and the plurality of aerosol substrates are in fluid communication with the airflow passage. Thus, the plurality of aerosol bodies not only can transmit aerosol by using the same airflow passage, but also are in fluid communication with the airflow passage in different directions, which not only can increase the distribution density of the aerosol bodies in the limited space in the shell, but also can fully occupy the internal space of the shell, which is beneficial to reducing the space of the airflow passage and helps to improve the proportion of aerosol in the airflow during each puff. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the description of the embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0035] FIG. 1 is a schematic view of an aerosol-generating device according to some embodiments of the present application;

[0036] FIG. 2 is a schematic view of window exposure of an aerosol-generating device according to some embodiments of the present application;

[0037] FIG. 3 is an exploded schematic view of an aerosol-generating device according to some embodiments of the present application;

[0038] FIG. 4 is another exploded schematic view of an aerosol-generating device according to some embodiments of the present application;

[0039] FIG. 5 is a schematic view of an aerosol-generating article according to some embodiments of the present application;

[0040] FIG. 6 is a cross-sectional view of an aerosol-generating article according to some embodiments of the present application;

[0041] FIG. 7 is a schematic view of an aerosol-generating article before assembly according to some embodiments of the present application;

[0042] FIG. 8 is a schematic view of a preliminary assembly of an aerosol-generating article according to some embodiments of the present application;

[0043] FIG. 9 is a schematic view of an aerosol-generating article according to some other embodiments of the present application.

[0044] In the drawings:

[0045] 1, aerosol-generating device; 11, magnetic field generator; 12, main body; 121, outer shell; 122, window; 13, cover assembly; 131, first magnetic member; 14, storage box; 143, air inlet hole; 15, mouthpiece assembly; 16, air inlet passage; 17, first sealing ring; 18, second sealing ring; 19, fourth sealing ring; 20, third sealing ring;

[0046] 2, aerosol-generating article; 21, aerosol body; 211, aerosol substrate; 212, heating element; 2121, fixed part; 22, housing; 221, first side wall; 222, second side wall; 223, first connecting edge; 224, second connecting edge; 225, first port; 226, second port; 23, fixing member; 231, retaining part; 232, through hole; 24, limiting member; 241, limiting hole; 25, airflow passage; 26, air-permeable wall; 27, positioning hole; 28, extraction member; 29, sealing wall; 30, mouthpiece;

[0047] 4. A gas-impermeable layer. Embodiments of the present application

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0049] The terms "first", "second", "third" in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number or order of the technical features indicated. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship or movement condition between components, and if the specific posture changes, the directional indications also change accordingly. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0050] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase that in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein are merely examples from a much larger number of embodiments that can be claimed.

[0051] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right", and the like are merely used for illustration and do not imply a specific orientation.

[0052] Please refer to FIG. 1-FIG. 9, some embodiments of the present application provide an aerosol generating article 2, which can interact with an aerosol generating device 1 and can generate aerosol under the power provided by the aerosol generating device 1.

[0053] The aerosol generating article 1 includes a plurality of aerosol bodies 21 disposed apart from each other and a housing 22 for accommodating the plurality of aerosol bodies 21, wherein the aerosol body 21 includes an aerosol substrate 211 capable of generating an aerosol upon being heated.

[0054] As used herein, the term "plurality" means two and more than two.

[0055] As used herein, the term "aerosol substrate" means a substrate capable of releasing volatile substances to form an inhalable aerosol therefrom. The aerosol substrate can include a tobacco-containing material that contains volatile tobacco flavor compounds that are released from the substrate upon heating. In particular, the aerosol substrate can be a tobacco-containing aerosol substrate, preferably a solid tobacco-containing aerosol substrate. Alternatively, the aerosol substrate can include a non-tobacco material. The aerosol substrate can also include an aerosol former. Examples of suitable aerosol formers are glycerol and propylene glycol.

[0056] Optionally, the aerosol substrate can contain additional tobacco or non-tobacco volatile flavor compounds that are released upon heating the aerosol substrate. The aerosol substrate can also contain microcapsules, for example containing additional tobacco or non-tobacco volatile flavor compounds, and such microcapsules can melt during heating of the solid aerosol substrate.

[0057] The aerosol substrate 211 can be generally disc-shaped or circular. The aerosol substrate 211 can be generally rectangular.

[0058] Preferably, the aerosol substrate is a tobacco sheet that includes a tobacco material, fibers, a binder, and an aerosol former. Preferably, the tobacco sheet is a cast leaf. A cast leaf is a form of reconstituted tobacco formed from a slurry that includes tobacco particles, fiber particles, an aerosol former, a binder, and, for example, a flavoring agent.

[0059] The tobacco particles can be in the form of tobacco dust having particles of about 30 microns to 250 microns, preferably about 30 microns to 80 microns or 100 microns to 250 microns, depending on the desired sheet thickness and the casting gap, wherein the casting gap generally defines the thickness of the sheet.

[0060] The thickness of the aerosol substrate 211 can be in the range of 0.2 mm and 6 mm, preferably between 0.5 mm and 4 mm, more preferably between 0.2 mm and 1 mm, for example the thickness of the aerosol substrate 211 can be about 0.4 mm.

[0061] The fibrous particles can include tobacco stem material, stalks, or other tobacco plant material, as well as other cellulose-based fibers, such as wood fibers having a low lignin content. The fibrous particles can be selected based on the need for sufficient tensile strength to produce a sheet and a low inclusion rate, such as between about 2% and 15%. Alternatively, fibrous materials such as vegetable fibers can be used with the fibrous particles described above, or in the alternative, bamboo.

[0062] In some embodiments, the aerosol generating article 2 further includes a heating element 212 for releasing heat to heat the aerosol base material 211 so that the aerosol base material 211 generates an aerosol.

[0063] The heating element 212 can be provided in plural. The plural heating elements 212 can be provided in one-to-one correspondence with the plural aerosol bodies 21, so that each heating element 212 mainly provides heat to one of the aerosol bodies 21 to make the aerosol body 21 generate an aerosol.

[0064] The heating element 212 can be a constituent of the aerosol body 21, i.e., at least one of the aerosol bodies 21 contains the heating element 212 for heating the aerosol base material 211, in addition to the aerosol base material 211.

[0065] The heating element 212 can be in direct contact with the corresponding aerosol base material 211. Based on this, as an example, the aerosol base material 211 is adhered to the surface of the heating element 212 by an adhesive. As an example, the aerosol base material 211 is made into a slurry, applied to the surface of the heating element 212, and after drying, forms an aerosol base material coating layer on the surface of the heating element 212. As an example, the heating element 212 is fixed to one side wall of the housing 22, and the aerosol generating article 2 further includes a fixing member 23 that interferingly engages with the aerosol base material 211 so that the aerosol base material 211 is in contact with the heating element 212. As an example, at least a part of the heating element 212 is disposed inside the aerosol base material 211.

[0066] The heating element 212 can be spaced apart from the corresponding aerosol base material 211. For example, the heating element 212 is disposed on the outer surface of the housing 22 or outside the housing 22, and the aerosol base material 211 is disposed inside the housing 22.

[0067] In some embodiments, the heating element 212 comprises a susceptor, the term “susceptor” when used herein refers to a material that can convert electromagnetic energy into heat. When located within a varying electromagnetic field, eddy currents induced in the susceptor cause heating of the susceptor. In such embodiments, the aerosol generating device 1 can comprise a magnetic field generator 11. The magnetic field generator 11 generates a varying magnetic field to heat the susceptor located within the varying magnetic field. In use, the susceptor is located within the varying magnetic field generated by the magnetic field generator 11. Wherein the magnetic field generator 11 is electrically connected with a power supply assembly in the aerosol generating device 1, the power supply assembly provides the magnetic field generator 11 with an electric current to generate the varying magnetic field. The magnetic field generator 11 can comprise one or more induction coils to generate the varying magnetic field. In some embodiments, the aerosol generating device 1 is capable of generating a varying magnetic field between 10 MHz to 30 MHz, for example between 20 MHz to 10 MHz, for example between 50 MHz to 7 MHz. In some embodiments, the aerosol generating device is capable of generating a varying magnetic field with a field strength (H-field) between 1 to 5 kA / m, for example between 2 kA / m to 3 kA / m, for example about 2.5 kA / m.

[0068] Wherein the susceptor can comprise a metal or carbon. In some embodiments, the susceptor can comprise a ferromagnetic material, for example ferrite, ferromagnetic steel or stainless steel. In some embodiments, the susceptor comprises a nickel-iron alloy. In some embodiments, the susceptor comprises a 400 series stainless steel, the 400 series stainless steel comprises a 410 grade or a 420 grade or a 430 grade stainless steel.

[0069] In some embodiments, the heating element 212 comprises an electrically resistive material or an infrared coating. The electrically resistive material is capable of generating Joule heat upon obtaining the power provided by the power supply assembly. The infrared coating is capable of emitting infrared light upon obtaining the power provided by the power supply assembly.

[0070] In some embodiments, the heating element 212 is substantially disc-shaped or circular. In some embodiments, the heating element 212 is substantially rectangular. In some embodiments, the heating element 212 has substantially the same shape as the aerosol substrate 211.

[0071] The plurality of aerosol bodies 21 are arranged spaced apart from each other. Therefore, the aerosol substrates 211 in different aerosol bodies 21 are independent of each other and are capable of independently generating aerosols; the heating elements 212 corresponding to different aerosol bodies 21 can also be independent of each other and can also independently generate heat. And, before the aerosol bodies 21 are accommodated in the housing 22, the plurality of aerosol bodies 21 can already be independent of each other.

[0072] In some embodiments, referring to FIGS. 5 and 6, after the plurality of aerosol bodies 21 are accommodated in the housing 22 independently of each other, the plurality of aerosol bodies 21 can continue to be kept independent of each other in the housing 22, so that at least two aerosol bodies 21 are arranged spaced apart from each other in the housing 22.

[0073] [Corrected according to Rule 91 on 30.09.2025] In some embodiments, referring to FIGS. 5, 6 and 7, the housing 22 has an airflow passage 25 therein. The aerosol bodies 21 can each be held on a side wall of the housing 22, and the plurality of aerosol substrates 211 can be in fluid communication with the same or different airflow passages 25. The plurality of aerosol bodies 21 accommodated in the housing 22 can share one airflow passage 25 for transmitting aerosol, so that the housing 22 can have one air inlet and one air outlet, so that the structure of the housing 22 is simple and so that the structure of the housing 22 is stable.

[0074] If all the aerosol substrates are arranged on the same side of the airflow passage: if the plurality of aerosol substrates are arranged in one row only, the airflow passage will have a large length, so that the airflow passage has a large space volume, which will result in a small proportion of aerosol in the airflow output from the airflow passage; for example, there are six aerosol substrates arranged in one row along the airflow passage, and it is assumed that the airflow passage space corresponding to one aerosol substrate has a volume of 1, then the airflow passage in the housing has at least 6 volumes, and only one aerosol substrate can generate aerosol at the same time, so that the proportion of aerosol in the airflow output from the airflow passage is less than 1 / 6 when the user inhales, resulting in a weak taste; and if the plurality of aerosol substrates are arranged in multiple rows along the width direction, the airflow passage will have a large width, the more the number of rows, the larger the width of the airflow passage, and the larger the space volume of the airflow passage, the smaller the proportion of aerosol in the airflow output from the airflow passage.

[0075] Referring to FIGS. 5 and 6, in the present application, the housing 22 includes a first side wall 221 and a second side wall 222 arranged non-coplanarly, part of the plurality of aerosol bodies 21 are held on the first side wall 221, and part of the plurality of aerosol bodies 21 are held on the second side wall 222. The first side wall 221 and the second side wall 222 can be located on different sides of the same airflow passage 25, for example, the first side wall 221 and the second side wall 222 can each be arranged facing the same airflow passage 25. This allows at least two aerosol substrates 211 to be in fluid communication with the airflow passage 25 in different directions, which not only increases the distribution density of the aerosol bodies 21 in the limited space in the housing 22, so that more aerosol bodies 21 can be accommodated in the limited space in the housing 22 without doubling the space volume of the airflow passage 25, but also allows the aerosol bodies 21 to be more concentrated, thereby reducing the volume of the housing 22 and the volume of the airflow passage 25.

[0076] Preferably, referring to FIG. 5, the airflow passage 25 has a substantially rectangular cross section, which has a smaller area than a circular cross section. In one example, the width w of the airflow passage 25 is less than 15 mm, for example, the width w of the airflow passage 25 can be about 12 mm. In one example, the height h of the airflow passage 25 is less than 3 mm, for example, the height h of the airflow passage 25 can be about 2.7 mm. In one example, the difference between the width of the airflow passage 25 and the width of the aerosol substrate 211 is less than 5 mm, for example, the difference can be about 3.6 mm. It is noted that the width of the aerosol substrate 211 is substantially the diameter of the disc or circle when the aerosol substrate 211 is substantially disc or circular shaped, and the width of the aerosol substrate 211 is substantially the width of the rectangle when the aerosol substrate 211 is substantially rectangular shaped. In one example, the difference between the width w of the airflow passage 25 and the width of the aerosol substrate 211 is less than half of the width of the aerosol substrate 211. In one specific embodiment, the width of the aerosol substrate 211 is about 8.5 mm, and the width w of the airflow passage 25 is about 12 mm.

[0077] More preferably, the cross section of the airflow passage 25 is substantially rectangular to further reduce the cross sectional area of the airflow passage.

[0078] It is noted that the cross section of the airflow passage 25 can also be other non-circular shapes in other embodiments.

[0079] The aerosol body 21 can be substantially sheet shaped, and the first side wall 221 can have a planar inner surface, so that the first side wall 221 can better hold the aerosol body 21, and facilitate the combination of the aerosol body 21 on the first side wall 221. The second side wall 222 can also have a planar inner surface to better hold the aerosol body 21.

[0080] Further, the first side wall 221 can be substantially planar, and the second side wall 222 can also be substantially planar.

[0081] The first side wall 221 and the second side wall 222 can be two adjacent side walls of the housing 22. For example, the cross section of the housing 22 can be substantially triangular, so that the housing 22 further includes a third side wall, and the third side wall can also hold part of the plurality of aerosol bodies 21.

[0082] The first side wall 221 and the second side wall 222 can be two side walls of the housing 22 that are spaced apart from each other. Preferably, the first side wall 221 and the second side wall 222 are opposite to each other. For example, the housing 22 can have a substantially quadrilateral cross section, and based on this, the housing 22 further includes a third side wall and a fourth side wall. The first side wall 221 and the second side wall 222 are opposite to each other, and the third side wall and the fourth side wall are opposite to each other. The third side wall and / or the fourth side wall can also hold some of the aerosol bodies 21. In order to reduce the height of the housing 22, preferably, the third side wall and the fourth side wall are empty, i.e., no aerosol body 21 is arranged on the third side wall and the fourth side wall, and the third side wall and the fourth side wall respectively define the boundaries of the airflow passage 25 on opposite sides. Preferably, the first side wall 221, the second side wall 222, the third side wall and the fourth side wall are all substantially flat, so that the housing 22 is substantially a square box.

[0083] When the first side wall 221 and the second side wall 222 are opposite to each other, the distance between the first side wall 221 and the second side wall 222 in the length direction of the housing 22 can be substantially constant. For example, the first side wall 221 and the second side wall 222 each have a substantially planar inner surface, and the inner surface of the first side wall 221 and the inner surface of the second side wall 222 are parallel to each other. In other embodiments, when the first side wall 221 and the second side wall 222 are opposite to each other, the distance between the first side wall 221 and the second side wall 222 in the length direction of the housing 22 can gradually increase or decrease.

[0084] In some embodiments, the housing 22 has a plurality of side walls, at least one of which is substantially rectangular, so that the housing 22 has at least one substantially rectangular face. In other embodiments, at least one of the side walls of the housing 22 can be substantially trapezoidal, so that the housing 22 has at least one substantially trapezoidal face.

[0085] It should be noted that the housing 22 can also have an arc-shaped side wall, so as to have an arc-shaped face. The housing 22 can also be substantially cylindrical, so as to have a circular face.

[0086] In some embodiments, the housing 22 comprises a first port 225 which is open to the outside, and is configured to allow outside air to enter the airflow passage 25. The first side wall 221 and the second side wall 222 can define part of the boundary of the first port 225. In order to prevent condensate formed by aerosol in the airflow passage 25 from leaking from the first port 225, the aerosol generating article 2 can further comprise a gas-permeable wall 26 which allows airflow to pass therethrough, and which is arranged on the first port 225. At least part of the gas-permeable wall 26 can be located in the first port 225 so as to connect the inner surfaces of the first side wall 221 and the second side wall 222, and at least part of the gas-permeable wall 26 can be located outside the first port 225 so as to block the first port 225 and connect the end portions of the first side wall 221 and the second side wall 222. As an example, the gas-permeable wall 26 comprises a paper sheet which is provided with a plurality of gas-permeable holes. As an example, the gas-permeable wall 26 comprises a gas-permeable fiber mass, such as gas-permeable cotton, acetate fiber, a filter core, or a cotton cloth, so that the gas-permeable wall 26 is also capable of absorbing liquid.

[0087] In some embodiments, the housing 22 comprises a second port 226 which is open to the outside, and is configured to allow gas in the airflow passage 25 to flow out of the housing 22. The first side wall 221 and the second side wall 222 can define part of the boundary of the second port 226.

[0088] The first port 225 and the second port 226 can be located on opposite sides of the housing 22.

[0089] After the aerosol body 21 is accommodated in the housing 22, the aerosol substrate 211 can be arranged close to the airflow passage 25 so as to reduce the distance that aerosol generated by the aerosol substrate 211 has to travel to flow into the airflow passage 25. Based on this, the aerosol substrate 211 can be located between the heating element 212 corresponding thereto and the airflow passage 25.

[0090] Alternatively, after the aerosol body 21 is accommodated in the housing 22, the heating element 212 can be arranged close to the airflow passage 25 so as to prevent aerosol generated by other aerosol substrates 211 from condensing on the aerosol substrate 211 corresponding thereto, and / or to enable condensate condensed thereon to evaporate when heated. Based on this, the heating element 212 can be located between the aerosol substrate 211 corresponding thereto and the airflow passage 25.

[0091] In some embodiments, at least part of the housing 22 is formed by injection molding of plastic. The plastic can comprise a PAEK-based material, a PI material, or a PBI material. Among them, the PAEK-based material comprises PEEK, PEKK, PEKEKK, or PEK material.

[0092] In some embodiments, the housing 22 is made of paper material. Compared with plastic, paper material is not only lower in cost, but also more environmentally friendly.

[0093] In some embodiments, the shell 22 is formed by folding a piece of paper. The piece of paper can be folded into a three-dimensional shape having at least three side walls, for example, the shell 22 is substantially a square box shape having a quadrangular cross section, or for example, the shell 22 is substantially a triangular prism shape having a substantially triangular cross section.

[0094] For example, referring to FIGS. 5, 7 and 8, one side wall of the shell 22 includes a first connecting edge 223 and a second connecting edge 224 arranged at least partially overlapped, the first connecting edge 223 and the second connecting edge 224 are located at opposite sides of the piece of paper unfolded to form the shell 22. The first connecting edge 223 and the second connecting edge 224 can be bonded to each other by an adhesive or double-sided tape, etc., to prevent one of the first connecting edge 223 and the second connecting edge 224 located inside the side wall from being warped inward. The first connecting edge 223 and the second connecting edge 224 can have substantially the same height and length, but are not limited thereto.

[0095] For example, the piece of paper used to make the shell 22 can be overlapped with no edges after the shell 22 is made. For example, the end of one side wall of the shell 22 abuts the inner surface of the other side wall adjacent thereto, and the outer surfaces of the two side walls are covered and connected by a tape, and the tape can cover the joint between the two side walls, thereby sealing the joint and preventing aerosol from leaking through the joint.

[0096] In some embodiments, the shell 22 is formed by splicing multiple pieces of paper. In the multiple pieces of paper, at least part of the paper can be flat; or, in the multiple pieces of paper, at least part of the paper is in a folded state having a fold angle.

[0097] Referring to FIGS. 7 and 8, the aerosol bodies 21 can be arranged at appropriate positions of the piece of paper before the piece of paper is folded or spliced to form the shell 22, and then the piece of paper is folded or spliced, and after the shell 22 is formed, each aerosol body 21 is located on the corresponding side wall of the shell 22.

[0098] As an example, the heating element 212 includes a fixed portion 2121, at least part of the fixed portion 2121 is embedded in the side wall of the shell 22 for fixation, for example, embedded in the first side wall 221 and / or the second side wall 222 for fixation. The fixed portion 2121 can be embedded in the side wall by piercing the paper, or a hole can be pre-punched on the paper shell 22, and at least part of the fixed portion 2121 is embedded in the hole. It should be noted that the heating element 212 including the fixed portion 2121 is optional, and other ways can also be used to keep the heating element 212 on the side wall of the shell 22.

[0099] Since the shell 22 needs to support multiple aerosol bodies 21, the shell 22 needs to have certain stiffness and avoid being ignited by the heated heating element 212. Therefore, the paper material used to manufacture the shell 22 needs to satisfy at least one of the following conditions:

[0100] (1) The mass per square meter of the paper material is greater than or equal to 300 g. Preferably, the mass per square meter of the paper material is greater than or equal to 350 g; or preferably, the mass per square meter of the paper material is greater than or equal to 400 g.

[0101] The ignition point of ordinary paper is usually between 130°C and 255.5°C. In the present application, the aerosol substrate has a small thickness, preferably not greater than 1 mm, so that the heating temperature and the heating time of the heating element 212 on the aerosol substrate 211 can be reduced, for example, the heating temperature of the heating element 212 can be lower than 260°C or lower than 250°C. In the case of the same color and the same water content, the greater the mass per square meter of the paper material, the higher the ignition point. Therefore, appropriately increasing the mass per square meter of the paper material can increase the ignition point of the paper. Therefore, the mass per square meter of the paper material used to manufacture the shell 22 can be at least greater than 300 g to prevent the shell 22 from burning when the heating element 212 is heated.

[0102] (2) The paper material is white to reduce the heat absorption capacity of the paper material.

[0103] (3) The paper material contains a flame retardant to increase the ignition point of the paper material, and even to make the ignition point of the paper material exceed the ignition point of ordinary paper.

[0104] (4) The thickness of the paper material is between 400 μm and 700 μm. Preferably, the thickness of the paper material is between 450 μm and 650 μm; or preferably, the thickness of the paper material is between 500 μm and 600 μm, for example, the thickness of the paper material can be about 555 μm.

[0105] Under the same conditions, the paper with a larger thickness has better stiffness and can better support multiple aerosol bodies. However, due to the volume limitation of the aerosol generating article, the shell has a small volume, so the thickness of the paper material should not exceed 700 μm.

[0106] (5) The stiffness of the paper material is greater than or equal to 6 mN·m. Preferably, the stiffness of the paper material is greater than or equal to 6.5 mN·m. More preferably, the stiffness of the paper material is greater than or equal to 9.5 mN·m. More preferably, the stiffness of the paper material is greater than or equal to 11 mN·m, for example, the stiffness of the paper material can be about 12.3 mN·m.

[0107] (6) The paper material includes board paper, tissue paper, copy paper, book cover paper, or card paper.

[0108] When the housing is made of paper, the aerosol generating article can further include a gas permeation prevention layer 4 disposed to cover a surface of the side wall of the housing to prevent aerosol in the housing from leaking through the side wall of the housing. Of course, the housing can also be made of paper capable of preventing gas permeation.

[0109] In some embodiments, referring to FIGS. 6-8, the aerosol generating article 2 can further include a fixing member 23 for defining a partial boundary of the airflow passage 25, the aerosol body 21 being positioned between the fixing member 23 and the housing 22. The fixing member 23 can include a holding portion 231 covering a portion of the aerosol body 21 to prevent the aerosol body 21 from falling off the side wall of the housing 22, so that the aerosol body 21 can be held on the side wall of the housing 22. The fluid passage 25 and the heating element 212 in the aerosol body 21 can be positioned on opposite sides of the aerosol substrate 211 in the aerosol body 21, so that the aerosol substrate 211 can not only be disposed to face the airflow passage 25, but also can be in fluid communication with the airflow passage 25 through the through-hole 232, so that the aerosol generated by the aerosol substrate 211 can flow into the airflow passage 25 through the through-hole 232.

[0110] The area of the through-hole 232 can be made smaller than the area of the aerosol body 21, so that the aerosol body 21 can be prevented from falling off through the through-hole 232. The shape of the through-hole 232 can be made different from the shape of the aerosol body 21, and the size of the through-hole 232 in a certain direction can be made smaller than the size of the aerosol body 21 in the direction, so that the aerosol body 21 can be prevented from falling off through the through-hole 232.

[0111] In the embodiments shown in FIGS. 7 and 8, the shape of the through-hole 232 is different from the shape of the aerosol body 21. The through-hole 232 can include two straight edges positioned opposite to each other and two arc-shaped edges positioned opposite to each other, the distance between the two straight edges being smaller than the width, length or diameter of the aerosol body 21. The arc-shaped edges can be circular arcs, the diameter of which can be greater than or equal to the width, length or diameter of the aerosol body 21.

[0112] As an example, the fixing member 23 can be configured to absorb liquid, for example, the fixing member 23 can include cotton cloth. Thus, the fixing member 23 can absorb aerosol condensate formed on the surface thereof, and also can absorb excess liquid in the aerosol substrate 211 and reduce condensation of aerosol in the aerosol substrate 211, can prevent the aerosol substrate 211 from being dampened after generating aerosol, and can prevent the condensate from leaking out of the housing 22.

[0113] As an example, the fixing member 23 is made of paper. When the housing 22 and the fixing member 23 are both made of paper, the paper making the two can have the same thickness, the same stiffness, the same color, the same composition and / or the same mass per square meter. Of course, it is optional but not mandatory that the fixing member 23 is made of paper.

[0114] As an example, referring to Figs. 6-8, the aerosol generating article 2 further comprises a limiting member 24 disposed between the fixing member 23 and the side wall of the housing 22, the limiting member 24 having a limiting hole 241 formed thereon, at least a portion of the aerosol substrate 211 being located in the limiting hole 241, and preferably the heating element 212 in the aerosol body 21 corresponding to the aerosol substrate 211 also being disposed in the limiting hole 241. The limiting hole 241 is used to determine the position of the aerosol body 21 on the side wall of the housing 22. The limiting member 24 can have a plurality of limiting holes 241, each of which can be provided with an aerosol substrate 211, and the relative positions of the plurality of aerosol bodies 21 and the distribution positions of the plurality of aerosol bodies 21 on the side wall of the housing 22 can be determined by the plurality of limiting holes 241 on the limiting member 24.

[0115] The limiting member 24 can be made of paper. When the housing 22 and the limiting member 24 are both made of paper, the paper making the two can have the same thickness, the same stiffness, the same color, the same composition and / or the same mass per square meter. Of course, it is optional but not mandatory that the limiting member is made of paper.

[0116] The limiting member 24 can be adhered to the side wall of the housing 22 by an adhesive or double-sided tape, etc. The retaining portion 231 can be adhered to the limiting member 24 by an adhesive or double-sided tape, etc.

[0117] The limiting hole 241 on the limiting member 24 and the through hole 232 on the fixing member 23 are preferably correspondingly arranged, and the limiting hole 241 and the through hole 232 can have a common central axis.

[0118] When the fixing member 23, the limiting member 24 and the housing 22 are all made of paper, the preparation process of the aerosol generating article 2 can be as follows:

[0119] First, a first paper sheet, a second paper sheet and a third paper sheet are obtained, the second paper sheet is provided with the limiting hole 241 so as to become the limiting member 24, and the third paper sheet is provided with the through hole 232 so as to become the fixing member 23; the first paper sheet, the second paper sheet and the third paper sheet can also be provided with the positioning hole 27 for mechanical transmission and / or positioning alignment; wherein the first paper sheet has the largest area.

[0120] Then, the positioning hole 27 on the limiting member 24 and the positioning hole 27 on the first paper sheet are aligned, and the limiting member 24 is pasted on the first paper sheet.

[0121] Then, the aerosol body 21 is placed in the limiting hole 241.

[0122] Then, the positioning hole 27 on the fixing member 23 and the positioning hole 27 on the limiting member 24 are aligned, the fixing member 23 is pasted on the limiting member 24, and the aerosol body 21 is clamped between the fixing member 23 and the first paper sheet, and at least a part of the aerosol substrate 211 faces the through hole 232.

[0123] Then, the first paper sheet is folded to form the shell 22 having at least three side walls. In the embodiment shown in FIG. 5, the shell 22 formed by the folded paper sheet has four side walls. After the shell 22 is formed, the aerosol body 21 is retained on the preset side walls of the shell 22.

[0124] Referring to FIGS. 1-4, some embodiments of the present application provide an aerosol generating device 1 including a main body 12 and a receiving box 14 arranged in the main body 12, and a gas inlet passage 16 in the main body 12 for fluid communication between the outside and the receiving box 14. The receiving box 14 can receive at least a part of an aerosol generating article 2, which can be any of the aerosol generating articles 2 provided in the above embodiments or other aerosol generating articles 2. When the aerosol generating article 2 is arranged in the receiving box 14, air from the outside can enter the aerosol generating article 2 through the gas inlet passage 16, and the aerosol generating article 2 can generate an aerosol under the power of a power supply assembly in the aerosol generating device 1.

[0125] In some embodiments, the aerosol generating article 2 received in the receiving box 14 has a shell 22 made of paper. The shell 22 made of paper has a smaller hardness than the shell 22 made of plastic, and it is not convenient to seal the shell 22 made of paper to the receiving box 14 and / or the main body 12 in a sealing manner by making the shell 22 made of paper and the silicone plug having a sealing function in interference fit, thereby achieving the sealing communication between the gas inlet passage 16 and the shell 22 made of paper.

[0126] Accordingly, in some embodiments, referring to FIG. 2, the aerosol generating device 1 can include a cover assembly 13 configured to be operable and expose or cover the accommodation box 14 based on the operation, and when the cover assembly 13 covers the accommodation box 14, the cover assembly 13 is free from extrusion and interference with the housing 22 of the aerosol generating article 2, and the cover assembly 13 forms a sealing connection with the main body 12, thereby preventing air inside the accommodation box 14 from being convected with outside air through the cover assembly 13 when the cover assembly 13 covers the accommodation box 14, and thus allowing the outside air to mainly flow into the accommodation box 14 through the air inlet passage 16. It is noted that the cover assembly 13 is free from extrusion and interference with the housing 22 of the aerosol generating article 2, including that the cover assembly 13 is free from contact with the housing 22 of the aerosol generating article 2, or including that the cover assembly 13 is in contact with the housing 22 of the aerosol generating article 2, but the interaction force therebetween is small, mainly for preventing the housing 22 from shaking in the accommodation box 14, and not causing the housing 22 to be deformed.

[0127] Accordingly, the detection accuracy of the airflow sensor disposed inside the main body 12 for detecting puffing and in fluid communication with the air inlet passage and / or the accommodation box 14 can be improved.

[0128] In the embodiments as shown in FIGS. 2-4, the main body 12 includes an outer shell 121, the accommodation box 14 is located inside the outer shell 121, a window 122 is formed in the side wall of the outer shell 121, and when the window 122 is open, the aerosol generating article 2 can be placed in the accommodation box 14 or taken out of the accommodation box 14. The aerosol generating device 1 further includes a fourth sealing ring 19, which can be retained on the cover assembly 13, or can be retained on the main body 12, or can be retained on the accommodation box 14, and when the cover assembly 13 covers the window 122, the cover assembly 13 covers the accommodation box 14, and the fourth sealing ring 19 provides a seal between the cover assembly 13 and the main body 12 or the accommodation box 14.

[0129] In order to allow the cover assembly 13 to be tightly fitted with the main body 12 or the accommodation box 14 when the cover assembly 13 covers the window 122, so that the cover assembly 13 and the main body 12 or the accommodation box 14 are sealed, and the cover assembly 13 can be removed by operation to expose the window 122. In some embodiments, the cover assembly 13 is provided with a first magnetic member 131, and the main body 12 is provided with a second magnetic member, and when the cover assembly 13 covers the window 122, the magnetic attraction force between the first magnetic member 131 and the second magnetic member allows the cover assembly 13 to be sealingly connected with the main body 12 or the accommodation box 14.

[0130] The cover assembly 13 can be a flip cover, one side of which is hingedly connected to the main body 12, so that the cover assembly 13 can be flipped to shield or expose the window 122. Of course, the cover assembly 13 can also be a slide cover, or the cover assembly 13 can be detachably connected to the main body 12, so that the cover assembly 13 can be removed from the housing 121.

[0131] In some embodiments, referring to FIGS. 3 and 4, the receiving box 14 includes a first receiving cavity 141 for receiving the aerosol generating article 2 at least partially, a receiving wall surrounding the first receiving cavity 141 and defining a circumferential side wall of the first receiving cavity 141, and a bottom wall defining a bottom boundary of the first receiving cavity 141, the bottom wall being connected to the receiving wall and disposed opposite the opening of the receiving box 14, the bottom wall being configured to support the aerosol generating article 2, the aerosol generating article 2 being capable of entering the first receiving cavity 141 from the opening of the receiving box 14 and exiting the first receiving cavity 141 from the opening of the receiving box 14.

[0132] The aerosol generating device 1 further includes a third sealing ring 20 surrounding the periphery of the receiving wall of the receiving box 14 and being in close contact with the receiving wall of the receiving box 14. The third sealing ring 20 is disposed adjacent to the opening of the receiving box 14 and elastically abuts against the housing 121 to provide a seal between the housing 121 and the receiving wall of the receiving box 14, so as to prevent air flow inside the main body 12 from entering the first receiving cavity 141 from the opening of the receiving box 14 after the cover assembly 13 shields the window 122. The opening of the receiving box 14 is disposed toward the window 122.

[0133] In some embodiments, referring to FIGS. 3 and 4, the receiving box 14 includes an air inlet hole 144 of the first receiving cavity 141 and the fluid communication air inlet passage 16, and the aerosol generating device 1 further includes a first sealing ring 17 disposed between the receiving box 14 and the main body 12 to provide a seal therebetween, so that air in the air inlet passage 16 mainly enters the receiving box 14, which helps to reduce the draw resistance.

[0134] Further, referring to FIGS. 3 and 4, the receiving box 14 has a second receiving cavity 142 therein, which is in fluid communication with the first receiving cavity 141 and is configured to receive an air flow sensor, and the first receiving cavity 141 and the second receiving cavity 142 are both in fluid communication with the air inlet passage 16 through the air inlet hole 143.

[0135] In some embodiments, referring to FIG. 3 and FIG. 4, the aerosol generating device 1 further comprises a mouthpiece assembly 15 and a second sealing ring 18, the receiving case 14 comprises an air outlet hole 144 fluidly connecting the aerosol generating article 2 and the mouthpiece assembly 15, and the second sealing ring 18 is arranged between the receiving case 14 and the mouthpiece assembly 15 to provide a seal between the receiving case 14 and the mouthpiece assembly 15, so that the gas in the receiving case 14 mainly enters the mouthpiece assembly 15 through the air outlet hole 144, which helps to prevent aerosol leakage and prevents the gas in the main body 12 from entering the mouthpiece assembly 15, thereby improving the taste.

[0136] In some embodiments, the shell 22 has a substantially trapezoidal cross section. Specifically, when the aerosol generating article 2 is received in the receiving case 14, the width of the side wall of the shell 22 arranged towards the window 122 is smaller than the inner width of the first receiving cavity 141, so that the aerosol generating article 2 can be conveniently taken out of the receiving case 14 by using the gap between the side wall of the shell 22 and the receiving wall of the receiving case 14. At the same time, the width of the side wall of the shell 22 supported by the bottom wall of the receiving case 14 is greater than the width of the side wall of the shell 22 arranged towards the window 122, so as to limit the shaking range of the aerosol generating article 2 in the receiving case 14. Preferably, the width of the side wall of the shell 22 supported by the bottom wall of the receiving case 14 is substantially the same as the inner width of the receiving case 14.

[0137] In some embodiments, the aerosol generating article 2 further comprises an extraction piece 28 arranged on the outer surface of the side wall of the shell 22, the extraction piece 28 comprises a connecting portion 281 connected to the outer surface of the shell 22 and an operating portion 282 configured to be detached from the outer surface of the shell 22 and be flipped relative to the connecting portion 281, so as to be gripped by a user. The user can take the aerosol generating article 2 out of the receiving case 14 by operating the operating portion 282.

[0138] In some embodiments, the extraction piece 28 can be a plastic sheet with a small thickness, or the extraction piece 28 can be a paper sheet with a small thickness.

[0139] In some other embodiments, the shell 22 is made of paper, the shell 22 has an aerosol base material 211 capable of generating aerosol inside the shell 22, and the shell 22 is substantially a square box shape, and the shell 22 includes a second port 226, and the aerosol generating article 2 further includes a sealing wall sealing the second port 226. Wherein, the aerosol generating article 2 further includes a mouthpiece 30 fixed on the sealing wall 29 and in fluid communication with the airflow channel 25. Therefore, the aerosol generating article 2 provided by the present embodiment can be different from the aerosol generating article 2 provided by any of the above-mentioned embodiments. Of course, the aerosol generating article 2 provided by the present embodiment can also be formed by adding the sealing wall 29 and the mouthpiece 30 to the aerosol generating article 2 provided by any of the above-mentioned embodiments.

[0140] Wherein, the sealing wall 29 can be made of paper, and the paper used to make the sealing wall 29 can be the same as the paper used to make the shell 22. The square box-shaped shell 22 and the sealing wall 29 can be formed by folding the paper. The air-tight layer 4 can cover the sealing wall 29 and the side wall of the shell 22 to prevent the aerosol from leaking through the joint between the sealing wall 29 and the side wall of the shell 22. Alternatively, the sealing wall 29 is made of a gas-tight plug, and the plug is sealingly connected with the side wall of the shell 22.

[0141] The mouthpiece 30 can be cylindrical or elliptical, and can be held by the user's lips.

[0142] When the aerosol generating article 2 includes the mouthpiece 30, the aerosol generating device 1 can be without the mouthpiece assembly 15, and the mouthpiece 30 of the aerosol generating article 2 can pass through the air outlet hole 144 of the receiving box 14, and the receiving box 14 is sealingly connected with the main body 12, so that the gas in the receiving box 14 but outside the aerosol generating article 2 cannot flow out of the receiving box 14.

[0143] It should be noted that the present application provides the preferred embodiments of the present application in the specification and drawings thereof, but is not limited to the embodiments described in the specification, and further, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications shall fall within the scope of the claims of the present application.

Claims

1. An aerosol-generating article, characterized in that, The aerosol generating article comprises: a plurality of aerosol bodies arranged at intervals from each other, the aerosol bodies comprising aerosol substrates for generating aerosols after being heated; a housing having an airflow passage inside, the housing comprising a first side wall and a second side wall arranged non-coplanarly, the plurality of aerosol bodies being accommodated in the housing, and part of the aerosol bodies being held on the first side wall and part of the aerosol bodies being held on the second side wall, the plurality of aerosol substrates each being in fluid communication with the airflow passage.

2. An aerosol-generating article according to claim 1, wherein, The airflow passage has a substantially rectangular cross section and satisfies at least one of the following conditions: a width of the airflow passage is less than 15 mm; or a height of the airflow passage is less than 3 mm; or a difference between the width of the airflow passage and the width of the aerosol substrate is less than 5 mm; or a difference between the width of the airflow passage and the width of the aerosol substrate is less than 1 / 2 of the width of the aerosol substrate.

3. An aerosol-generating article according to claim 1, wherein, The first side wall and the second side wall are arranged oppositely.

4. An aerosol-generating article according to claim 1, wherein, The housing comprises a first port, and the aerosol generating article further comprises a gas-permeable wall arranged at the first port, the gas-permeable wall being configured to allow ambient air to enter the airflow passage; or The housing comprises a first port arranged open, the first port being configured to allow ambient air to enter the airflow passage; or The housing comprises a second port arranged open, the second port being configured to allow gas in the airflow passage to flow out of the housing.

5. An aerosol-generating article according to claim 1, wherein The housing is made of paper material.

6. An aerosol-generating article according to claim 5, wherein, The housing is substantially a square box shape, and the housing comprises a second port, and the aerosol generating article further comprises a sealing wall sealing the second port; the aerosol generating article further comprises a mouthpiece fixed on the sealing wall and in fluid communication with the airflow passage.

7. An aerosol-generating article according to claim 5, wherein, The aerosol generating article further comprises a gas-impermeable layer arranged on a surface of the housing side wall; or The housing is made of paper material capable of preventing gas permeation.

8. The aerosol-generating article according to claim 1, wherein, The aerosol generating article comprises a heating element arranged corresponding to the aerosol body, the heating element contacting the aerosol substrate of the aerosol body.

9. An aerosol-generating article according to claim 8, wherein, The heating element comprises a fixing portion at least partially embedded in the first side wall and / or the second side wall.

10. An aerosol-generating article according to claim 1, wherein, The aerosol generating article further comprises a fixing member for defining a partial boundary of the airflow passage, the aerosol body being located between the fixing member and the housing; wherein the fixing member comprises a holding portion and a through hole, the holding portion covering part of the aerosol body to hold the aerosol body on the side wall of the housing, and the aerosol substrate being in fluid communication with the airflow passage through the through hole.

11. An aerosol-generating article according to claim 10, wherein, The fixing member is configured to be capable of absorbing liquid.

12. An aerosol-generating article according to claim 10, wherein, The aerosol generating article further comprises a limiting member arranged between the fixing member and the side wall of the housing, the limiting member having a limiting hole formed therein, at least part of the aerosol substrate being located in the limiting hole.

13. An aerosol-generating article according to claim 12, wherein, The limiting member is bonded to the side wall of the housing; and / or The holding portion is bonded to the limiting member.

14. An aerosol-generating article according to claim 12, wherein, At least one of the fixing member, the limiting member and the housing is made of paper material; and / or At least two of the fixing member, the limiting member, and the housing are made of the same material.

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