Aerosol generating product and aerosol generating system

Abstract

The utility model provides an aerosol generating product and an aerosol generating system. The aerosol generating product comprises a filter tip section, an aerosol generating part and a control part, the first matrix section is arranged on one side of the filter tip section in the axial direction of the aerosol generating product; the first matrix section is constructed to extend in the axial direction, and any cross section, perpendicular to the axial direction, of the first matrix section is in a non-closed ring shape with a notch. According to the aerosol generating product and the aerosol generating system, the substrate section of the aerosol generating product extends in the axial direction, and any cross section, perpendicular to the axial direction, of the substrate section is in the non-closed ring shape with the notch; in this way, airflow at least can penetrate through the substrate section through the notch part, suction resistance during suction of a user is reduced, and the suction experience of the user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of articles, and in particular to an aerosol generating article and an aerosol generating system. BACKGROUND

[0002] A heat-not-burn device releases compounds by heating, rather than burning, an aerosol-forming substrate in an aerosol generating article. The aerosol-forming substrate can be tobacco or other non-tobacco products, which can or can not contain nicotine.

[0003] An aerosol generating article applied to a heat-not-burn device, a substrate segment is usually solid, so the problem is that the airflow passing through the solid substrate segment is easy to cause a large suction resistance; when the central heater is inserted into the substrate segment, the degree of extrusion of the aerosol-forming substrate is inconsistent, which is easy to affect the user's smoking experience; when the central heater is pulled out of the substrate segment, it is easy to leave residues on the heater. CONTENT OF THE UTILITY MODEL

[0004] Embodiments of the present application provide an aerosol generating article and an aerosol generating system to reduce the suction resistance when the airflow passes through the first substrate segment.

[0005] In one aspect, the present application provides an aerosol generating article for use with an aerosol generating device, comprising:

[0006] a filter segment;

[0007] a first substrate segment arranged on one side of the filter segment along an axial direction of the aerosol generating article; wherein the first substrate segment is configured to extend along the axial direction and any cross section of the first substrate segment perpendicular to the axial direction is a non-closed ring with a gap.

[0008] In one example, the first substrate segment has a receiving groove and a ventilation groove in communication with the receiving groove, an inner periphery of the non-closed ring defines a boundary of the receiving groove, and the gap defines a boundary of the ventilation groove.

[0009] In one example, the first substrate segment is of a one-piece structure.

[0010] In one example, the first substrate segment is formed by a plurality of sheet-shaped substrate segments stacked along the axial direction.

[0011] In one example, a length of the substrate segment along the axial direction is between 0.5mm and 2mm.

[0012] In one example, a number of the substrate segments stacked in the first substrate segment is between 6 and 40.

[0013] In an example, the first substrate segment has a length along the axial direction of 12mm to 20mm.

[0014] In an example, the gap has a distance of 0.1mm to 0.5mm.

[0015] In an example, the inner periphery of the non-closed loop is circular, and the diameter of the circle is 2mm to 3mm.

[0016] In an example, the non-closed loop further has a gap slot extending from the inner periphery of the non-closed loop to the vicinity of the outer periphery of the non-closed loop.

[0017] In an example, the filter segment further has a cooling segment arranged along the axial direction between the filter segment and the first substrate segment.

[0018] In an example, the filter segment further has a plug arranged along the axial direction at an end of the first substrate segment away from the filter segment.

[0019] In an example, the filter segment further has a second substrate segment.

[0020] The second substrate segment is arranged along the axial direction between the first substrate segment and the filter segment, or the second substrate segment is arranged along the axial direction at an end of the first substrate segment away from the filter segment.

[0021] In an example, the second substrate segment comprises at least one of:

[0022] a substrate segment of a sheet structure and being solid;

[0023] a substrate segment of a sheet structure and having a through hole;

[0024] a substrate segment of a column structure and having a groove on a side wall of the substrate segment;

[0025] being rolled from one or more sub-substrate segments.

[0026] In an example, the filter segment further has an outer wrapping layer wrapped outside the first substrate segment.

[0027] Another aspect of the present disclosure provides an aerosol generating system including an aerosol generating device and the aerosol generating article as described above.

[0028] The aerosol generating device is configured to heat the aerosol forming substrate in the first substrate segment to generate an aerosol.

[0029] In an example, the aerosol generating device includes a heater configured to be inserted into the inner circumference of the non-closed annular shape to heat or to heat the aerosol generating article from the bottom of the aerosol generating article.

[0030] The aerosol generating article and the aerosol generating system provided above have a substrate segment extending in an axial direction and having a non-closed annular shape with a notch in any cross section perpendicular to the axial direction. In this way, the airflow can pass through the substrate segment at least through the notch, reducing the suction resistance when a user inhales and improving the user's inhalation experience. BRIEF DESCRIPTION OF DRAWINGS

[0031] One or more embodiments are illustrated by way of example in the figures that form a part of this disclosure and which are shown by way of example, not limitation, in the figures of the accompanying drawings and in which like references indicate similar elements, and in which:

[0032] Figure 1 is a schematic diagram of an aerosol generating system according to an embodiment of the present application;

[0033] Figure 2 is a schematic diagram of an aerosol generating article according to an embodiment of the present application;

[0034] Figure 3 is a schematic diagram of an aerosol generating article according to an embodiment of the present application;

[0035] Figure 4 is a schematic diagram of an aerosol generating article according to an embodiment of the present application;

[0036] Figure 5 is a schematic diagram of a substrate segment according to an embodiment of the present application;

[0037] Figure 6 is a schematic diagram of a substrate segment according to an embodiment of the present application;

[0038] Figure 7 is a schematic diagram of a substrate segment according to an embodiment of the present application;

[0039] Figure 8 is a schematic diagram of a substrate segment according to an embodiment of the present application;

[0040] Figure 9 is a schematic diagram of a substrate segment according to an embodiment of the present application;

[0041] Figure 10 is a schematic diagram of a substrate segment according to an embodiment of the present application;

[0042] Figure 11is a disassembled view of another aerosol generating article provided by embodiments of the present application.

[0043] Figure 12 is a cross-sectional view of another aerosol generating article provided by embodiments of the present application.

[0044] Figure 13 is a schematic view of a substrate segment in another aerosol generating article provided by embodiments of the present application.

[0045] Figure 14 is a disassembled view of yet another aerosol generating article provided by embodiments of the present application.

[0046] Figure 15 is a cross-sectional view of yet another aerosol generating article provided by embodiments of the present application.

[0047] Figure 16 is a schematic view of a substrate segment in yet another aerosol generating article provided by embodiments of the present application.

[0048] Figure 17 is a schematic view of another substrate segment in yet another aerosol generating article provided by embodiments of the present application. DETAILED DESCRIPTION

[0049] For the purposes of the present application, the following explanations and specific embodiments will be made with reference to the accompanying drawings and specific embodiments.

[0050] As used herein, the terms 'upstream' and 'downstream' are used to describe the relative positions of elements, or parts of elements, of an aerosol generating article with respect to the direction in which a user draws on the aerosol generating article during use thereof.

[0051] Figure 1 is a schematic view of an aerosol generating system provided by embodiments of the present application.

[0052] As Figure 1 shown, the aerosol generating system includes an aerosol generating article 100 and an aerosol generating device 200.

[0053] The aerosol generating device 200 includes:

[0054] a chamber 201 in which the aerosol generating article 100 is removably received;

[0055] a heater 202 which is insertable into the aerosol generating article 100 when the aerosol generating article 100 is received in the chamber 201, thereby heating the smokable material in the aerosol generating article 100 to generate an aerosol. The heating method of the heater 210 can be resistance heating, infrared heating, electromagnetic induction heating, etc., and is not particularly limited.

[0056] It is noted that in other examples, it is also possible that the heater 210 is configured to heat around at least part of the aerosol generating article 100.

[0057] The electric cell 203 is configured to supply power. The electric cell 203 can be a rechargeable cell or a disposable cell.

[0058] The circuit 204 is configured to control the aerosol generating device 200. For example, the circuit 204 is configured to control the electric cell 203 to supply power to the heater 202.

[0059] In an example, the circuit 204 includes a control unit. The control unit is configured as a hardware component to control the overall operation of the aerosol generating device 200. The control unit can include at least one processor. The processor can be implemented as an array of a plurality of logic gates, or can be implemented as a combination of a general-purpose microprocessor and a memory having a program executable in the microprocessor. Those of ordinary skill in the art will understand that the processor can be implemented in other forms of hardware.

[0060] As shown in FIG. 1, the aerosol generating article 100 according to an embodiment of the present application has a longitudinal cylindrical configuration. Figures 2-7

[0061] The aerosol generating article 100 can have an outer diameter of between approximately 5 mm and 12 mm, for example, between approximately 6 mm and 8 mm.

[0062] The total length of the aerosol generating article 100 is preferably at least about 35 mm. More preferably, the total length of the aerosol generating article 100 is at least about 40 mm. Even more preferably, the total length of the aerosol generating article 100 is at least about 45 mm. Additionally or alternatively, the total length of the aerosol generating article 100 is preferably less than about 80 mm. More preferably, the total length of the aerosol generating article 100 is less than about 75 mm. Even more preferably, the total length of the aerosol generating article 100 is less than about 70 mm.

[0063] In preferred embodiments, the total length of the aerosol generating article 100 is between about 35 mm and about 80 mm, more preferably between about 40 mm and about 75 mm, and even more preferably between about 45 mm and about 70 mm.

[0064] ​The aerosol-generating article 100 comprises an outer wrapper 101, a filter segment 102, a cooling segment 103, a substrate segment 104, and an end piece 105. The filter segment 102, the cooling segment 103, the substrate segment 104, and the end piece 105 are arranged in sequence along an axial direction of the aerosol-generating article 100; specifically, the filter segment 102 is arranged at a downstream end of the aerosol-generating article 100, the substrate segment 104 is arranged on one side of the filter segment 102 along the axial direction, the cooling segment 103 is arranged between the filter segment 102 and the substrate segment 104 along the axial direction, and the end piece 105 is arranged at an end of the substrate segment 104 away from the filter segment 102, i.e. at an upstream end of the aerosol-generating article 100.

[0065] The outer wrapper 101 is wrapped around the outside of the filter segment 102, the cooling segment 103, the substrate segment 104, and the end piece 105. The material of the outer wrapper 101 includes, but is not limited to, one or more combinations of fibrous paper, metal foil, metal foil composite fibrous paper, polyethylene composite fibrous paper, PE, PBAT, and the like.

[0066] The filter segment 102 is used to filter the aerosol and can be held by a user for smoking. The material of the filter segment 102 includes, but is not limited to, one or more combinations of PE (polyethylene), PLA (Polylactic acid, also known as poly-lactide), PBAT (butylene adipate-co-terephthalate), PP (Polypropylene), acetate fiber, propylene fiber material, and the like.

[0067] The cooling segment 103 is arranged immediately upstream of the filter segment 102 and is contiguous with the filter segment 102. In use, the aerosol-forming substrate releases volatile substances after being heated to pass along the cooling segment 103 towards the downstream end of the aerosol-generating article 100, and the volatile substances can cool down in the cooling segment 103 to form the aerosol inhaled by the user. In a preferred implementation, the cooling segment 103 comprises a cavity extending along the length of the cooling segment 103. By virtue of the above axially extending cavity, the airflow passing through the cooling segment 103 is in the longitudinal direction without substantial radial deviation. The cooling segment 103 can act to cool the temperature of the aerosol stream being drawn through the cooling segment 103 by virtue of heat transfer. The constituents of the aerosol will interact with the space within the cooling segment 103 and lose thermal energy.

[0068] In some embodiments, the temperature of the aerosol stream can decrease by more than 10 degrees Celsius as it is drawn through the cooling segment 103. In some embodiments, the temperature of the aerosol stream can decrease by more than 25 degrees Celsius or more than 30 degrees Celsius as it is drawn through the cooling segment 103.

[0069] The material of the cooling segment 103 and the filter segment 102 can be the same or different.

[0070] The substrate segment 104 is arranged immediately upstream of, and contiguous with, the cooling segment 103. The substrate segment 104 has an aerosol-forming substrate. The aerosol-forming substrate can comprise nicotine. The nicotine-containing aerosol-forming substrate can comprise a nicotine salt substrate. The aerosol-forming substrate can comprise a plant-based material. The aerosol-forming substrate preferably comprises a tobacco-containing material. The aerosol-forming substrate can comprise homogenised tobacco material, which can be formed by coagulation of particulate tobacco. Alternatively or additionally, the aerosol-forming substrate can comprise a tobacco-free material. The aerosol-forming substrate can comprise homogenised plant-based material.

[0071] The aerosol-forming substrate can comprise one or more of the following forms: powder, granules, pellets, shreds, strands, ribbons or sheets, for example. The aerosol-forming substrate can comprise one or more of the following materials: tobacco leaf, tobacco midrib shred, reconstituted tobacco, homogenised tobacco, extruded tobacco, tobacco pulp, cast leaf tobacco and expanded tobacco.

[0072] The aerosol-forming substrate can comprise at least one aerosol-former. Aerosol-former is used to describe any suitable known compound or mixture of compounds which, in use, facilitates the formation of an aerosol and which is substantially resistant to thermal degradation at the operating temperature of the aerosol-generating article. Suitable aerosol-formers are known in the art and include, but are not limited to: polyhydric alcohols such as propylene glycol, triethylene glycol, 1,3- butanediol, and glycerol; esters of polyhydric alcohols such as glycerol mono-, di- or triacetate; and aliphatic esters of mono-, di- or polycarboxylic acids such as dimethyl dodecanedioate and dimethyl tetradecene dioate.

[0073] The aerosol-forming substrate can comprise any suitable amount of aerosol-former. For example, the aerosol-former can be present in an amount equal to or greater than 5% by dry weight of the aerosol-forming substrate, and preferably greater than 30% by weight by dry weight. The aerosol-former can be present in an amount less than about 95% by dry weight. Preferably, the aerosol-former is present in an amount up to about 55%.

[0074] The aerosol-forming substrate can also comprise tobacco or tobacco-free volatile flavour compounds which are released on heating of the aerosol-forming substrate. The aerosol-forming substrate can also comprise one or more capsules which, for example, comprise additional tobacco or tobacco-free volatile flavour compounds, and such capsules can melt during heating of the aerosol-forming substrate.

[0075] Aerosol-forming matrices can be provided on or embedded in a thermally stable carrier. The term "thermally stable" as used herein refers to a material that is substantially non-degradable at temperatures typically heated to which the aerosol-forming matrix is ​​located (e.g., from about 150°C to about 300°C). The carrier can take the form of powder, granules, pellets, fragments, filaments, strips, or sheets. The aerosol-forming matrix can be deposited on the surface of the carrier in the form of, for example, flakes, foams, glues, or pastes. The aerosol-forming matrix can be deposited on the entire surface of the carrier, or alternatively, it can be patterned to provide non-uniform flavor delivery during use.

[0076] In one example, the matrix segment 104 is configured to extend along the axial direction and any cross-section of the matrix segment 104 perpendicular to the axial direction is a non-closed loop with a notch.

[0077] Please refer to Figures 5-7 To understand this, in a specific example, the matrix segment 104 may be formed by stacking multiple sheet-like matrix segments 1041 along the axial direction.

[0078] The matrix segment 1041 is also a non-closed ring with a notch, or any cross-section of the matrix segment 1041 perpendicular to the axial direction is also a non-closed ring with a notch. The length h of the matrix segment 1041 along the axial direction is between 0.5 mm and 2 mm, or between 0.5 mm and 1.5 mm, or 1 mm. The number of matrix segments 1041 stacked in the matrix segment 104 is between 6 and 40, or between 6 and 30, or between 6 and 20, or between 10 and 20.

[0079] When multiple sheet-like matrix segments 1041 are stacked along the axial direction, in any two adjacent matrix segments 1041, the body 1041a of one matrix segment 1041 remains in contact with the body 1041a of the other matrix segment 1041, and the two can be glued together with an adhesive material; the cavity 1041b in one matrix segment 1041 is aligned with the cavity 1041b in the other matrix segment 1041; the notch 1041c in one matrix segment 1041 is aligned with the notch 1041c in the other matrix segment 1041. Thus, the matrix segment 104 formed after stacking has a receiving groove A and a venting groove B communicating with the receiving groove A. The non-closed annular inner circumference defines the boundary of the receiving groove A, and the notch defines the boundary of the venting groove. The length H of the matrix segment 104 formed after stacking along the axial direction can be between 12mm and 20mm, between 12mm and 18mm, or 16mm.

[0080] When the heater 202 is inserted into the aerosol generating article 100, the heater 202 is inserted into the inner circumference of the non-closed ring, that is, the heater 202 is housed in the receiving groove A; the venting groove B allows for the compression of the aerosol forming matrix. In this way, on the one hand, the frictional force of the heater 202 when inserted into the aerosol generating article 100 is reduced, and when the heater 202 is pulled out of the aerosol generating article 100, the residue remaining on the heater 202 is also reduced; on the other hand, air can flow in through the venting groove B, reducing the suction resistance during user suction and improving the user's suction experience.

[0081] In one example, the distance d of the notch is between 0.1 mm and 0.5 mm, or between 0.1 mm and 0.4 mm, or between 0.1 mm and 0.3 mm. The inner circumference of the non-closed ring is circular, and the diameter of the circle is... Between 2mm and 3mm, for example, the diameter of the circle. It is 2.5mm.

[0082] The plug 105 is positioned immediately upstream of and adjacent to the substrate section 104. The plug 105 effectively prevents substances inside the aerosol-generating product from falling into the aerosol-generating device when the product is inserted. The plug 105 can be made of the same material as the filter section 102, ensuring that it blocks the product without affecting the user's suction experience; however, other materials can also be used for the plug 105, which is not limited here.

[0083] Figure 8 This is a schematic diagram of another matrix segment provided in an embodiment of this application. (and...) Figures 5-7 The difference in this example is that the matrix segment 104 is a one-piece structure. For example, it can be formed into a one-piece structure through extrusion molding, injection molding, or compression molding. Extrusion molding refers to a processing method in which a mixture of raw materials is added to an extruder, and the material is simultaneously heated and plasticized by the screw through the extruder barrel and screw, continuously passing through the die head to form products or semi-finished products of various cross-sections. Thus, even after the aerosol-generated product 100 is heated and absorbed or after heating ceases, it remains a one-piece medium, making it less prone to disintegration and falling off.

[0084] Figures 9-10 This is a schematic diagram of yet another matrix segment provided in an embodiment of this application. (and...) Figures 5-7 Unlike the previous example, the non-closed annular body also has a notch C extending from the inner circumference of the non-closed annular shape to near the outer circumference of the non-closed annular shape. The notch C further reduces the frictional force when the heater 202 is inserted into the aerosol generating article 100, and also reduces residue remaining on the heater 202 when it is pulled out of the aerosol generating article 100, thus lowering the suction resistance during user suction.

[0085] Figures 11-12 is another aerosol generating article 100 provided by an embodiment of the present application.

[0086] Unlike the example shown in Figures 2-7 , in the example shown in Figures 11-12 , a substrate segment 106 is arranged between the temperature reduction segment 103 and the substrate segment 104 in the axial direction. The substrate segment 106 is in the form of a sheet, and the length of the substrate segment 106 in the axial direction is between 0.5 mm and 2 mm, or between 0.5 mm and 1.5 mm, or 1 mm. In the example shown in Figures 11-12 , the substrate segment 106 is solid. In other alternative embodiments, the substrate segment 106 can have a through hole penetrating the upper and lower surfaces, and the cross-sectional shape of the through hole includes, but is not limited to, a circle (e.g. 106a shown in Figure 13 ), a triangle, a square, and the like.

[0087] Unlike the example shown in Figures 2-7 , in the example shown in Figures 11-12 , the plug 105 is not arranged.

[0088] In the example shown in Figures 11-12 , when the heater 210 is configured to heat the aerosol generating article 100 from the bottom of the aerosol generating article 100, such as air heating, light heating, and the like, the above configuration of the aerosol generating article 100 can allow hot air or light to directly heat the substrate segment 106 through the accommodation groove A and / or the ventilation groove B in the substrate segment 104, on the one hand, reducing the suction resistance when the user smokes; on the other hand, the baking area is reduced, the heat is more concentrated, the smoke is faster, the preheating time is shortened. In addition, it can reduce the adsorption of the aerosol forming substrate to the aerosol, so that the amount of aerosol in the first few puffs will be more, avoiding the problem that the amount of aerosol in the first few puffs is small; reducing the absorption of the aerosol forming substrate to the aerosol temperature can make the aerosol temperature not drop too much, thereby solving the problem that the aerosol temperature in the first few puffs is too cold.

[0089] It can be understood that Figures 8-10 the substrate segment 104 shown in Figures 11-12 is also applicable to the example shown in .

[0090] Figures 14-15 is still another aerosol generating article 100 provided by an embodiment of the present application.

[0091] Unlike the example shown in Figures 2-7 , in the example shown in Figures 14-15 , the plug 105 is not arranged.In the example shown, the aerosol generating article 100 has a substrate segment 107 arranged at the end of the substrate segment 104 distal to the filter segment 102, the substrate segment 107 being arranged immediately upstream of the substrate segment 104 and contiguous therewith.

[0092] In one example, the substrate segment 107 is in the form of a cylinder, and the substrate segment 107 has a groove 107a in the side wall thereof extending from the lower surface to the upper surface thereof. Through the groove 107a, external air can flow to the accommodation groove A and / or the ventilation groove B through the gap between the side wall of the substrate segment 107 and the outer wrapper 101.

[0093] In an alternative implementation, as shown in Figure 16 , the substrate segment 107 is in the form of a sheet, and the length of the substrate segment 107 in the axial direction is between 0.5 mm and 2 mm, or between 0.5 mm and 1.5 mm, or 1 mm. The substrate segment 107 can have a through hole extending through the upper and lower surfaces thereof, and the cross-sectional shape of the through hole includes, but is not limited to, a circle (e.g. 107a as shown in Figure 16 ), a triangle, a square, and the like. In other examples, the substrate segment 107 can be solid.

[0094] In another alternative implementation, as shown in Figure 17 , the substrate segment 107 can be rolled from a sub-substrate segment 1071 and a sub-substrate segment 1072, and the cross-section of the rolled substrate segment 107 is in the form of a composite spiral. The sub-substrate segment 1071 and the sub-substrate segment 1072 can be made of materials of different densities, and different smoking substances and aroma substances can be added according to actual needs, and the tightness of the rolling can be adjusted according to actual needs. It can be understood that it is also feasible to roll from one or more than two sub-substrate segments, and the shape of the rolling can be a spiral or other regular or irregular shape.

[0095] Unlike the example shown in Figures 2-7 , in the example shown in Figures 14-15 , the plug 105 is not provided.

[0096] In the example shown in Figures 14-15In the example of the aerosol generating article 100 shown in FIG. 1, when the heater 210 is configured to heat the aerosol generating article 100 from the bottom of the aerosol generating article 100, for example, by using air heating, light heating, or the like, the above-described configuration of the aerosol generating article 100 can allow hot air or light to directly heat the substrate segment 107, and the generated aerosol can flow to the filter segment 102 through the accommodation groove A and / or the ventilation groove B in the substrate segment 104. In this way, on the one hand, the suction resistance during user puffing is reduced; on the other hand, faster smoking is achieved, the preheating time is shortened. In addition, the aerosol-forming substrate can reduce the adsorption of aerosol, so that the aerosol amount of the first few puffs is more, avoiding the problem of small aerosol amount of the first few puffs; the aerosol-forming substrate can reduce the absorption of aerosol temperature, so that the aerosol temperature does not decrease too much, thereby solving the problem of the first few puffs of aerosol being too cold.

[0097] It can be understood that, Figures 8-10 The substrate segment 104 shown in FIG. 1 is also applicable to Figures 14-15 the example of FIG. 2.

[0098] It can be understood that, Figures 11-12 The substrate segment 106 in the example of FIG. 2 can also be configured in a columnar structure or rolled by one or more sub-substrate segments, and specific reference can be made to the substrate segment 107 and its description in Figure 14 and Figure 17 .

[0099] It should be noted that the specification and drawings of the present application give the preferred embodiments of the present application, but are not limited to the embodiments described in the specification, and further, those of ordinary skill in the art can make improvements or changes according to the above description, and all these improvements and changes shall belong to the protection scope of the appended claims of the present application.

Claims

1. An aerosol-generating article for use with an aerosol-generating device, characterized in that, Comprise: a filter segment; a first substrate segment arranged at one side of the filter segment along an axial direction of the aerosol generating article; wherein the first substrate segment is configured to extend along the axial direction and any cross section of the first substrate segment perpendicular to the axial direction is a non-closed ring with a notch.

2. An aerosol-generating article according to claim 1, wherein, The first substrate segment has a receiving groove and a ventilation groove in communication with the receiving groove, an inner periphery of the non-closed ring defines a boundary of the receiving groove, and the notch defines a boundary of the ventilation groove.

3. An aerosol-generating article according to claim 1, wherein, The first substrate segment is of an integral structure.

4. The aerosol-generating article of claim 1, wherein, The first substrate segment is formed by stacking a plurality of sheet-shaped substrate segments along the axial direction.

5. An aerosol-generating article according to claim 4, wherein, The length of the substrate segment along the axial direction is between 0.5 mm and 2 mm.

6. An aerosol-generating article according to claim 4, wherein The number of substrate segments stacked in the first substrate segment is between 6 and 40.

7. The aerosol-generating article of claim 1, wherein, The length of the first substrate segment along the axial direction is between 12 mm and 20 mm.

8. The aerosol-generating article of claim 1, wherein, The distance of the notch is between 0.1 mm and 0.5 mm.

9. The aerosol-generating article of claim 1, wherein, The inner periphery of the non-closed ring is circular, and the diameter of the circle is between 2 mm and 3 mm.

10. An aerosol-generating article according to claim 1, wherein, The non-closed ring further has a notch groove extending from the inner periphery of the non-closed ring to the vicinity of the outer periphery of the non-closed ring.

11. An aerosol-generating article according to claim 1, wherein, Further comprising a cooling segment arranged between the filter segment and the first substrate segment along the axial direction.

12. An aerosol-generating article according to claim 1, wherein, Further comprising a plug arranged at one end of the first substrate segment away from the filter segment along the axial direction.

13. An aerosol-generating article according to claim 1, wherein, Further comprising a second substrate segment; The second substrate segment is arranged between the first substrate segment and the filter segment along the axial direction, or the second substrate segment is arranged at one end of the first substrate segment away from the filter segment along the axial direction.

14. An aerosol-generating article according to claim 13, wherein, The second substrate segment comprises at least one of: a substrate segment of a sheet structure and being solid; a substrate segment of a sheet structure and having a through hole; a substrate segment of a column structure and having a groove on a side wall of the substrate segment; being rolled by one or more sub-substrate segments.

15. An aerosol-generating article according to claim 1, wherein, Further comprising an outer wrapping layer wrapped outside the first substrate segment.

16. An aerosol-generating system comprising: An aerosol generating device and the aerosol generating article according to any one of claims 1 to 15; The aerosol generating device is configured to heat an aerosol forming substrate in the first substrate segment to generate an aerosol.

17. An aerosol-generating system according to claim 16, wherein, The aerosol generating device comprises a heater configured to be inserted into the inner periphery of the non-closed ring for heating or to heat the aerosol generating article from a bottom of the aerosol generating article.

Images