Aerosol-generating substrate, aerosol-generating article, and electronic atomization device

Abstract

The invention relates to the technical field of aerosol generation, and provides an aerosol generation substrate, an aerosol generation product and an electronic atomization device.The aerosol generation substrate comprises a base part and a plurality of subunits, the subunits are located on the outer side of the base part in the first direction, and the subunits are arranged at intervals in the second direction of the base part; the space between every two adjacent subunits is a gap space, and the first direction and the second direction intersect with each other. The outer surfaces of the subunits receive heat firstly and then transfer the heat to the base part, the heat is transferred from outside to inside, the aerosol generating substrate is provided with clearance spaces, the clearance spaces play a role in collecting and circulating aerosol, the smoke release directions of the subunits include outward and inward smoke release directions, and the aerosol can be released to the clearance spaces on the two sides of the second direction. The release path of the aerosol is unblocked, and the situation that the aerosol cannot be released in time is avoided, so that the extraction efficiency of the aerosol can be improved.

Description

Technical Field

[0001] The present application relates to the field of aerosol generation technology, and in particular to an aerosol generating substrate, an aerosol generating product and an electronic atomization device. Background Art

[0002] The aerosol-generating substrate can form an aerosol by ignition or by heating without burning. Taking the aerosol-generating substrate that is heated without burning as an example, the aerosol-generating substrate is heated by an external heat source so that the aerosol-generating substrate is just heated to a degree sufficient to emit an aerosol, and the aerosol-generating substrate does not burn. When used, the aerosol-generating substrate is heated to release the aerosol.

[0003] In the related art, the density of the physical medium of the aerosol generating matrix is ​​relatively high, which results in the aerosol being unable to be released in time and greatly reduces the aerosol extraction efficiency. Summary of the invention

[0004] In view of this, the embodiments of the present application hope to provide an aerosol generating substrate, an aerosol generating product and an electronic atomization device that can improve the aerosol extraction efficiency.

[0005] To achieve the above-mentioned purpose, the present application embodiment provides an aerosol generating substrate, including:

[0006] Basic Department;

[0007] A plurality of subunits are located outside the base portion along a first direction, and the plurality of subunits are spaced apart along a second direction of the base portion, and a space between two adjacent subunits is a gap space, wherein the first direction intersects with the second direction.

[0008] In some embodiments, the subunit includes a first part and a second part, the second part and the first part are arranged along a first direction, and a size of the first part along the second direction is greater than a size of the second part along the second direction;

[0009] The second portion connects the base portion and the first portion, or the first portion connects the base portion and the second portion.

[0010] In some embodiments, the subunit includes one first part and a plurality of second parts, the plurality of second parts are arranged at intervals along the second direction and located inside the first part, and the second part connects the base part and the first part.

[0011] In some embodiments, a distance between two adjacent first portions along the second direction is a first distance, and a ratio of a size of the first portion along the second direction to the first distance is between 10:1 and 1:1.

[0012] In some embodiments, the wall thickness of the first portion is 0.1 mm to 0.5 mm.

[0013] In some embodiments, a dimension of the second portion along the first direction is 0.5 mm to 5 mm.

[0014] In some embodiments, a ratio of a size of the first portion along the second direction to a size of the second portion along the first direction is 1:2 to 2:1.

[0015] In some embodiments, a difference between a maximum wall thickness and a minimum wall thickness of the aerosol-generating substrate is a first difference, and a percentage of the first difference to the minimum wall thickness of the aerosol-generating substrate is in a range from 0% to 100%.

[0016] In some embodiments, taking a plane perpendicular to the third direction as a projection plane, a hydraulic diameter of a projection shape of the aerosol generating substrate is 5 mm to 15 mm.

[0017] In some embodiments, the number of the subunits is between 6 and 30.

[0018] In some embodiments, a minimum distance between two adjacent subunits along the second direction is 0.1 mm to 1 mm.

[0019] In some embodiments, taking a plane perpendicular to the third direction as a projection plane, a total projection area of ​​all the sub-units and a total projection area of ​​all the gap spaces are between 1:9 and 1:1.

[0020] In some embodiments, the base portion is a plate-shaped structure, and the wall thickness direction of the base portion is consistent with the first direction; or,

[0021] The base part is in a cylindrical structure.

[0022] In some embodiments, an air passage is formed inside the base portion and passes through at least one end thereof along the third direction.

[0023] In some embodiments, there are multiple airways, and the multiple airways are arranged at intervals.

[0024] In some embodiments, the outer side of the aerosol generating substrate is provided with a heat generating layer, the heat generating layer is arranged on the outer surface of the subunit and can heat the subunit; and / or,

[0025] Taking the plane perpendicular to the third direction as the projection plane, the projection shape of the aerosol generating substrate is circular, elliptical or polygonal.

[0026] In some embodiments, the subunit is located at the outermost side of the aerosol generating substrate along the first direction; and / or,

[0027] Taking a plane perpendicular to the third direction as a cross section, the cross section at any position of the subunit is the same, wherein the first direction and the third direction are perpendicular to each other.

[0028] In some embodiments, the first direction and the second direction are perpendicular to each other; or

[0029] The first direction is the radial direction, and the second direction is the circumferential direction.

[0030] The present application provides an aerosol generating product, comprising:

[0031] The aerosol generating substrate as described in any one of the above items;

[0032] The functional segment is arranged at one end of the aerosol generating substrate along the third direction, and the functional segment at least includes a filtering segment for filtering aerosol.

[0033] The present application also provides an electronic atomization device, comprising:

[0034] The aerosol generating product described above;

[0035] A heating element is arranged on the outer side of the subunit along the first direction, and the heating element is used to heat the aerosol generating substrate to generate aerosol.

[0036] In some embodiments, the heating element is laser heating.

[0037] In the embodiment of the present application, the outer surface of the subunit first receives heat and then transfers it to the base. The heat is transferred from the outside to the inside. The aerosol generating matrix has a gap space, and the gap space plays the role of collecting and circulating the aerosol. The smoke release direction of the subunit not only includes outward and inward, but also can release aerosol to the gap space on both sides of the second direction, which unblocks the release path of the aerosol and avoids the situation where the aerosol cannot be released in time. Therefore, the extraction efficiency of the aerosol can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic structural diagram of a first aerosol generating substrate in one embodiment of the present application;

[0039] Figure 2 for Figure 1 A schematic structural diagram of the first aerosol generating substrate from another perspective is shown;

[0040] Figure 3 This is a schematic structural diagram of a second aerosol generating substrate in one embodiment of the present application;

[0041] Figure 4 for Figure 3A schematic structural diagram of the second aerosol generating matrix from another perspective;

[0042] Figure 5 Schematic diagram of the structure of a third aerosol generating substrate in one embodiment of the present application;

[0043] Figure 6 for Figure 5 A schematic structural diagram of the third aerosol generating matrix from another perspective is shown;

[0044] Figure 7 This is a schematic diagram of the structure of a first seed unit in an embodiment of the present application;

[0045] Figure 8 This is a schematic diagram of the structure of a second seed unit in one embodiment of the present application;

[0046] Fig. 9 is a schematic structural diagram of a third seed unit in an embodiment of the present application;

[0047] Fig.10 is a schematic structural diagram of a fourth seed unit in an embodiment of the present application;

[0048] Fig.11 is a schematic structural diagram of a fifth seed unit in an embodiment of the present application;

[0049] Fig.12 Schematic diagram of the structure of the sixth seed unit in one embodiment of the present application.

[0050] Description of Reference Numerals

[0051] Base part 1; air channel 1a; subunit 2; gap space 2a; first part 21; second part 22; side part 3. DETAILED DESCRIPTION

[0052] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0053] In this application, a plurality includes two and more than two. The unit "mm" is millimeter.

[0054] In the related art, since the density of the physical medium of the aerosol generating matrix in the related art is relatively high, it is difficult for the aerosol to circulate inside the aerosol generating matrix in a short period of time, or it is difficult to be released from the physical medium of the aerosol generating matrix to the outside. Therefore, the aerosol cannot be released in time, and the aerosol extraction efficiency is greatly reduced.

[0055] The present application embodiment provides an aerosol generating matrix, please refer to Figures 1 to 5 The aerosol generating substrate comprises a base 1 and a plurality of subunits 2, wherein the plurality of subunits 2 are located outside the base 1 along a first direction, and the plurality of subunits 2 are arranged at intervals along a second direction of the base 1, and the space between two adjacent subunits 2 is a gap space 2a, wherein the first direction and the second direction intersect. In other words, the outer surface of the aerosol generating substrate is a non-continuous surface. The gap space 2a is used to collect and circulate aerosols.

[0056] It should be noted that, in the embodiments of the present application, the aerosol generating substrate is used to generate aerosol by heating. Exemplarily, the aerosol generating substrate can be used to generate aerosol by heating without burning. That is, the aerosol generating substrate is heated below the ignition point to generate aerosol. The aerosol generating substrate does not burn during the process of generating aerosol. In some application scenarios, the aerosol generating substrate can be used to generate aerosol by ignition. The aerosol generating substrate of the present application is more used to generate aerosol by heating without burning.

[0057] The embodiment of the present application also provides an aerosol generating product, which includes the aerosol generating substrate and a functional segment in any embodiment of the present application, wherein the functional segment is disposed at one end of the aerosol generating substrate along the third direction, and the functional segment at least includes a filter segment for filtering aerosols. The filter segment is used to filter aerosols generated by the aerosol generating substrate.

[0058] The aerosol generating article is used for users to inhale the aerosol generated by the aerosol generating matrix. For example, the user can inhale the filtered aerosol by holding the filter section in the mouth. The aerosol generated by the aerosol generating matrix is ​​transported to the filter section under the action of the suction negative pressure.

[0059] The aerosol generating article is used in conjunction with an electronic atomization device having a heating element.

[0060] The electronic atomization device provided in the embodiment of the present application includes the aerosol generating product and a heating element in any embodiment of the present application, and the heating element is arranged on the outer side of the subunit 2 along the first direction, and the heating element is used to heat the aerosol generating matrix to generate an aerosol.

[0061] The heating element is disposed outside the subunit 2 to heat the aerosol generating substrate from the outside to the inside. For example, the heating element heats the subunit 2 from the outside, and the heat can be transferred to the base 1 through the subunit 2. In other words, the heat is transferred from the outside to the inside.

[0062] The heating methods of the heating element include, but are not limited to, resistance heating, electromagnetic heating, infrared heating, microwave heating or laser heating, etc. Among them, the heating element may be in contact with the outer surface of the subunit 2 or not. Transferring heat in the form of thermal convection means that the heating element is not in contact with the aerosol generating matrix, the heating element first heats the air, and then the hot air bakes and heats the aerosol generating matrix. Heat conduction means that the heating element is in contact with the aerosol generating matrix and conducts heat to the aerosol generating matrix. Exemplarily, resistance and electromagnetic heating mainly transfer heat to the aerosol generating matrix in the form of thermal conduction or thermal convection. Infrared heating, microwave heating or laser heating mainly transfer heat to the aerosol generating matrix in the form of thermal radiation. That is, the heating element can heat the aerosol generating matrix in one or more of the three forms of thermal conduction, thermal convection and thermal radiation.

[0063] In one embodiment, the heating element is a laser heater. The laser heater is a device that emits laser light to heat the aerosol generating substrate. Since the laser has the characteristics of highly concentrated energy and high timeliness, the purpose of quickly generating aerosol can be achieved. High timeliness means that the time for laser heating and stopping heating is very short, that is, the laser can heat the aerosol generating substrate to generate aerosol in a short time, and can also stop heating the aerosol generating substrate in a short time. Therefore, the aerosol generating substrate needs to be able to release the generated aerosol in time to avoid aerosol accumulation.

[0064] Exemplarily, the heating element includes, but is not limited to, a laser diode, a semiconductor laser, a helium-neon laser, a single-mode laser or a multi-mode laser, and the like.

[0065] In the embodiment of the present application, the outer surface of the subunit 2 first receives heat and then transfers it to the base 1. The heat is transferred from the outside to the inside. The aerosol generating matrix has a gap space 2a. The gap space 2a plays the role of collecting and circulating the aerosol. The smoke release direction of the subunit 2 not only includes outward and inward, but also can release aerosol to the gap space 2a on both sides of the second direction, which unblocks the release path of the aerosol and avoids the situation where the aerosol cannot be released in time. Therefore, the extraction efficiency of the aerosol can be improved.

[0066] In one embodiment, a heat-generating layer is disposed on the outside of the aerosol generating matrix, and the heat-generating layer is disposed on the outer surface of the subunit 2 and can heat the subunit 2. In this way, the amount of heat conducted to the subunit 2 can be increased. The heat-generating layer can cover the gap between the outer surfaces of two adjacent subunits 2, thereby playing a guiding role in limiting the flow of aerosols in the gap space 2a and the outside air along the third direction, which can increase the amount of air entering and improve the aerosol extraction efficiency. Since the aerosol can be released in multiple directions such as outward, inward, and to the gap space 2a on both sides of the second direction, the risk of bulging of the heat-generating layer and reducing the heat transfer efficiency between the outer surface and the heat-generating layer can be reduced.

[0067] The specific structure of the heating layer is not limited. For example, the heating layer is a light absorbing layer. That is, the heating layer can absorb a light beam and generate heat. For example, the heating layer can absorb laser light and emit heat.

[0068] In one embodiment, please refer to Figure 1 , subunit 2 is located at the outermost side of the aerosol generating substrate along the first direction. That is to say, the other parts of the aerosol generating substrate are all located on the inner side of subunit 2 along the first direction, and the outer peripheral surface of subunit 2 is the outer peripheral surface of the aerosol generating substrate. Subunit 2 is the part of the aerosol generating substrate closest to the heating layer.

[0069] In one embodiment, please refer to Figure 2 and Figure 7 The subunit 2 includes a first portion 21 and a second portion 22 , the second portion 22 and the first portion 21 are arranged along a first direction, and a dimension W2 of the first portion 21 along the second direction is greater than a dimension W3 of the second portion 22 along the second direction.

[0070] In one embodiment, please refer to Figures 1 to 6 , the second part 22 connects the base part 1 and the first part 21. That is to say, the first part 21 is located outside the second part 22, so that after the first part 21 is irradiated by the laser or receives the heat conducted by the light-absorbing layer, the first part 21 releases aerosol in various directions such as the outside, the inside, and the second direction. In addition, the second part 22 and the base part 1 will also be heated due to heat conduction (the degree of heating is less than the degree of heating of the first part 21), and the aerosol generated by heating will also be released into the gap space 2a. Since the dimension W2 of the first part 21 along the second direction is greater than the dimension W3 of the second part 22 along the second direction, the area of ​​the outer surface of the first part 21 is larger. Due to the high energy concentration of laser heating, the larger the medium area of ​​the subunit 2 that initially contacts the laser, the better, so that there is enough solid medium to receive the energy generated by the laser in order to release more aerosol.

[0071] It should be noted that the outer surface of the subunit 2, such as the outer surface of the first part 21, can be used to receive the heat generated by laser irradiation. The outer surface of the subunit 2 can be directly irradiated by the laser, or the laser can irradiate the light absorbing layer, causing the light absorbing layer to generate heat and heat the subunit 2.

[0072] In one embodiment, the first part 21 connects the base 1 and the second part 22. That is, the second part 22 is located outside the first part 21, so that after the second part 22 is irradiated by the laser or receives the heat conducted by the light absorbing layer, the second part 22 releases aerosol in all directions. In addition, the first part 21 and the base 1 will also be heated due to heat conduction, and the aerosol generated by the heating will also be released into the gap space 2a. Since the dimension W3 of the second part 22 along the second direction is smaller than the dimension W2 of the first part 21 along the second direction, the area of ​​the outer surface of the second part 22 is smaller, and the released aerosol is relatively small.

[0073] In one embodiment, please refer to Figure 1 , taking a plane perpendicular to the third direction as a cross section, the cross section at any position of the subunit 2 is the same, wherein the first direction and the third direction are perpendicular to each other. The same cross section includes that both the cross-sectional shape and the cross-sectional area are the same. That is, in the third direction, the cross section of the subunit 2 remains consistent. Exemplarily, taking a plane perpendicular to the third direction as a cross section, the cross section at any position of the first part 21 is the same and the cross section at any position of the second part 22 is the same.

[0074] In one embodiment, please refer to Figure 1 and Figure 2 , the gap space 2a runs through both ends of the subunit 2 along the third direction. The airflow can flow from one end of the subunit 2 to the other end along the third direction. In this way, the airflow formed by the air carrying the aerosol can flow more smoothly, and the airflow flow resistance is smaller, which can significantly reduce the suction resistance during the suction process and improve the suction experience.

[0075] In one embodiment, the aerosol generating matrix is ​​an integral structure. For example, the aerosol generating matrix is ​​an integral structure formed by extrusion. Extrusion molding refers to a processing method in which the material passes through the interaction between the barrel and the extrusion screw of the extrusion device, the material is plasticized by heat and pushed to the discharge port by the extrusion screw, and is formed into an aerosol generating matrix with a preset projected shape and corresponding pores through an extrusion mold such as a mouth mold. Exemplarily, the base 1, the subunit 2 and the gap space 2a can be formed by extrusion molding. In this way, the aerosol generating matrix is ​​an integral medium during use, such as after being heated and sucked or stopped being heated, and is not prone to disintegration and falling problems.

[0076] It should be noted that the third direction refers to the extension direction of the aerosol generating matrix. For example, if the aerosol generating matrix is ​​formed by extrusion, the third direction is the extrusion direction of the aerosol generating matrix. The projected shape refers to the shape of the aerosol generating matrix with the plane perpendicular to the third direction as the projection surface.

[0077] In one embodiment, please refer to Figures 1 to 7The first part 21 is a plate-like structure extending along the second direction, and the second part 22 is a plate-like structure extending along the first direction. In other words, the first part 21 and the second part 22 are both solid media. With such a design, the first part 21 and the second part 22 have simple structures and are easy to manufacture.

[0078] In one embodiment, please refer to Fig.12 The subunit 2 includes a first part 21 and a plurality of second parts 22, wherein the plurality of second parts 22 are arranged at intervals along the second direction and are located on the inner side of the first part 21, and the second part 22 connects the base 1 and the first part 21. On the one hand, the mass of the physical medium of the subunit 2 can be increased by the plurality of second parts 22. The more the mass of the medium, the more the mass of the aerosol that can be generated, thereby increasing the total amount of aerosol that can be released. On the other hand, the plurality of second parts 22 are arranged at intervals along the second direction, and there is a gap between two adjacent second parts 22 to facilitate the circulation of the aerosol and to facilitate heat to penetrate the gap and enter the inner side. On the other hand, the plurality of second parts 22 can also be used to increase the support for the first part 21, so that the first part 21 can better maintain its shape and reduce the deformation of the first part 21. In this way, both the amount of aerosol released and the circulation of aerosol can be taken into account.

[0079] For example, in one embodiment, please refer to Fig.12 The first part 21 and the second part 22 are both plate-like structures. The subunit 2 includes a first part 21 and two second parts 22. The plane perpendicular to the third direction is used as the projection plane. The projection of the first part 21 and the projection of the two second parts 22 together form a π shape.

[0080] In one embodiment, please refer to Figures 1 to 11 The subunit 2 includes a first part 21 and a second part 22, both of which are plate-shaped structures. Taking the plane perpendicular to the third direction as the projection plane, the projection of the first part 21 and the projection of the second part 22 are both in a T-shape.

[0081] In one embodiment, please refer to Figure 7 The first part 21 and the second part 22 are both equal-wall-thickness structures, and the wall thickness H1 of the first part 21 is equal to the wall thickness of the second part 22 .

[0082] It should be noted that the equal wall thickness structure refers to a structure in which the thickness of the dielectric wall is equal everywhere.

[0083] In one embodiment, please refer to Figure 8 The first part 21 has a uniform wall thickness structure, and the wall thickness of the second part 22 gradually increases from close to the first part 21 to far away from the first part 21.

[0084] In one embodiment, please refer to Fig. 9 The corners of the first part 21 are all rounded, and the connection between the first part 21 and the second part 22 is rounded. In this way, the stress concentration caused by the sharp corners at the corners and the connection can be reduced, resulting in damage.

[0085] In one embodiment, please refer to Fig.10 , the connection between the first part 21 and the second part 22 is chamfered. That is, the wall thickness of the connection between the first part 21 and the second part 22 gradually increases from close to the second part 22 to far away from the second part 22. Taking the plane perpendicular to the third direction as the projection plane, the projection of the first part 21 and the projection of the second part 22 are both T-shaped, and the connection between the first part 21 and the second part 22 is trapezoidal.

[0086] In one embodiment, please refer to Fig.11 The wall thickness at both ends of the first part 21 along the second direction is greater than the wall thickness of the remaining parts of the first part 21.

[0087] In one embodiment, please refer to Figure 2 , the spacing between two adjacent first portions 21 along the second direction is the first spacing L, and the ratio of the dimension W2 of the first portion 21 along the second direction to the first spacing L is between 10:1 and 1:1. Exemplarily, the ratio of the dimension W2 of the first portion 21 along the second direction to the first spacing L is 10:1, 9:1, 8:1, 7:1, 6:1, 5.5:1, 5.5:1, 5:1, 3:1 or 1:1, etc.

[0088] In this embodiment, if the ratio of the dimension W2 of the first part 21 along the second direction to the first spacing L is greater than 10:1, the medium mass of the first part 21 is relatively large, and the first spacing L is relatively small, so that the generated aerosol is relatively large and the gap space 2a for circulating the aerosol is relatively small, and the suction resistance is relatively large. In addition, the smaller the first spacing L, the more complicated the manufacturing process of the aerosol generating matrix, such as the extrusion process, the more difficult it is to extrude the aerosol generating matrix, and the lower the yield rate. If the ratio of the dimension W2 of the first part 21 along the second direction to the first spacing L is less than 1:1, the medium mass of the first part 21 is relatively small, and the first spacing L is relatively large, so that the generated aerosol is relatively small and the gap space 2a for circulating the aerosol is relatively large, and the generated aerosol is difficult to meet the suction demand. Therefore, the ratio of the dimension W2 of the first part 21 along the second direction to the first spacing L is between 10:1 and 1:1. Under the condition of ensuring a high manufacturing yield of the aerosol generating matrix, the effective extraction of the aerosol can be guaranteed to the maximum extent, the aerosol release amount and the suction resistance can be balanced, and the user experience is good.

[0089] In one embodiment, please refer to Figure 7, the wall thickness H1 of the first part 21 is 0.1mm to 0.5mm. Exemplarily, the wall thickness H1 of the first part 21 is 0.1mm, 0.2mm, 0.3mm, 0.35mm, 0.4mm or 0.5mm, etc. If the wall thickness H1 of the first part 21 is less than 0.1mm, the wall thickness H1 of the first part 21 is too small, the amount of aerosol released by the physical medium per unit area is too small, and the first part 21 is easily deformed. If the wall thickness H1 of the first part 21 is greater than 0.5mm, the aerosol generated in the first direction of the first part 21 is difficult to be effectively released. In this way, the wall thickness H1 of the first part 21 is moderate, which has good structural strength, is easy to manufacture such as extrusion molding, can produce a suitable amount of aerosol release, and can be released quickly to be inhaled by the user.

[0090] In one embodiment, please refer to Figure 7 , the dimension W1 of the second part 22 along the first direction is 0.5mm to 5mm. The dimension W1 of the second part 22 along the first direction is 0.5mm, 0.6mm, 0.9mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 4.8mm or 5mm, etc. If the dimension W1 of the second part 22 along the first direction is less than 0.5mm, the distance between the second part 22 and the base part 1 is closer, the dimension of the gap space 2a along the first direction is narrower, the space for aerosol circulation is insufficient, and it is not easy to inhale. If the dimension W1 of the second part 22 along the first direction is greater than 5mm, the second part 22 is easily deformed during the manufacturing process, and the yield rate is low. The dimension W1 of the second part 22 along the first direction is 0.5mm to 5mm. In this way, the dimension W1 of the second part 22 along the first direction is moderate, which has good structural strength, is easy to manufacture such as extrusion molding, and is convenient for inhalation.

[0091] In one embodiment, please refer to Figure 7 , the ratio of the dimension W2 of the first part 21 along the second direction to the dimension W1 of the second part 22 along the first direction is 1:2 to 2:1. If the ratio of the dimension W2 of the first part 21 along the second direction to the dimension W1 of the second part 22 along the first direction is less than 1:2, the problem of insufficient aerosol release or deformation of the second part 22 is likely to occur. If the ratio of the dimension W2 of the first part 21 along the second direction to the dimension W1 of the second part 22 along the first direction is greater than 2:1, the volume of the gap space 2a is insufficient, the aerosol circulation space is too small, and it is not easy to inhale. Therefore, the ratio of the dimension W2 of the first part 21 along the second direction to the dimension W1 of the second part 22 along the first direction is 1:2 to 2:1. In this way, the subunit 2 has good structural strength and is easy to manufacture, such as extrusion molding, and can ensure that the gap space 2a has sufficient space for easy inhalation.

[0092] In one embodiment, the difference between the maximum wall thickness and the minimum wall thickness of the aerosol generating substrate is a first difference, and the first difference is a percentage of the minimum wall thickness of the aerosol generating substrate of 0% to 100%. That is, the maximum wall thickness of the aerosol generating substrate is not greater than one times the minimum wall thickness. If the maximum wall thickness of the aerosol generating substrate is greater than one times the minimum wall thickness, that is, the first difference is a percentage of the minimum wall thickness of the aerosol generating substrate of greater than 100%, the wall thickness difference of each part of the aerosol generating substrate is too large, which may easily cause the part of the structure of the aerosol generating substrate to be difficult to form, such as difficult to extrude, during the manufacturing process, such as the extrusion process.

[0093] In one embodiment, the percentage of the first difference to the minimum wall thickness of the aerosol generating substrate is 0%, that is, the wall thickness of each part of the aerosol generating substrate is equal. For example, the wall thickness of the first part 21, the second part 22 and the base part 1 are equal, and the wall thickness of each part of the aerosol generating substrate has a high consistency, which can prevent the situation that some structures of the aerosol generating substrate are difficult to form, such as difficult to extrude, during the manufacturing process, such as the extrusion process, and improve the yield rate.

[0094] In one embodiment, please refer to Figure 2 , taking the plane perpendicular to the third direction as the projection plane, the hydraulic diameter D of the projection shape of the aerosol generating matrix is ​​5mm to 15mm. Exemplarily, the hydraulic diameter D of the projection shape of the aerosol generating matrix is ​​5mm, 6mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15mm, etc. On the one hand, it is convenient for the aerosol generating matrix to adapt to the handheld electronic atomization device; on the other hand, the time for the aerosol generating matrix to transfer heat from the outside to the inside is moderate, so as to release the aerosol evenly during the puffing process; on the other hand, the total release amount of the aerosol of the aerosol generating matrix is ​​appropriate, and the total release time of the aerosol is moderate, that is, the service life of the aerosol generating matrix is ​​moderate, ensuring that the number of puffs is suitable for customer needs, avoiding insufficient or excessive puffing, and the user has a good puffing experience.

[0095] It should be understood that the projection shape of the aerosol generating substrate refers to the contour shape of the projection surface of the aerosol generating substrate. For example, the projection shape of the aerosol generating substrate refers to the outer contour shape of the cross section formed by the base 1, the first part 21, the second part 22 and the release gap. Taking the first part 21 as an example, which is located outside the second part 22, the projection shape of the aerosol generating substrate refers to the outer contour shape formed by the outer side surface of the first part 21 of all subunits 2.

[0096] In one embodiment, the first direction and the second direction are perpendicular to each other. Exemplarily, the first direction and the second direction are two straight lines. Figure 6Taking the projection shape of the aerosol generating substrate as a rectangle as an example, the first direction may be a width direction, and the second direction may be a length direction.

[0097] In one embodiment, the first direction is radial and the second direction is circumferential. Figure 1 Taking the projection shape of the aerosol generating substrate as a circle as an example, the first direction may be radial, and the second direction may be circumferential.

[0098] For example, in one embodiment, the projection shape of the aerosol generating substrate is a circle (see Figure 2 and Figure 4 ), oval or polygon. Polygons include but are not limited to squares, rectangles (see Figure 6 ), pentagon, hexagon or octagon, etc. That is to say, the aerosol generating substrate can be in the form of a cylinder, a cuboid or a prism, etc.

[0099] In the embodiments of the present application, the hydraulic diameter refers to the ratio of four times the area of ​​the projected shape to the perimeter. For example, if the projected shape of the aerosol generating substrate is a rectangle, the hydraulic diameter is the ratio of four times the area of ​​the rectangle to the perimeter of the rectangle. For another example, if the projected shape of the aerosol generating substrate is a circle, the hydraulic diameter is the diameter of the circle.

[0100] In one embodiment, the number of subunits 2 is between 6 and 30 (inclusive). In this way, the sum of the medium masses of all subunits 2 and the sum of the volumes of all release gaps are matched, that is, the amount of aerosol released is matched to the flow rate of aerosol in the release gap, so that the aerosol generation substrate releases aerosol uniformly during the heating process.

[0101] In one embodiment, the minimum spacing between two adjacent subunits 2 along the second direction is 0.1 mm to 1 mm. For example, the minimum spacing between two adjacent subunits 2 along the second direction is 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm, 0.9 mm or 1 mm, etc.

[0102] For example, see Figure 2 , the minimum spacing between two adjacent subunits 2 along the second direction is the first spacing L between two adjacent first portions 21 along the second direction. That is, the first spacing L between two adjacent first portions 21 along the second direction is 0.1 mm to 1 mm (including 0.1 mm and 1 mm).

[0103] In this embodiment, if the minimum spacing between two adjacent subunits 2 along the second direction is less than 0.1 mm, the distance between the two adjacent subunits 2 is too close, the gap space 2a is relatively small, and the suction resistance is large. In addition, the smaller the minimum spacing between two adjacent subunits 2 along the second direction, the more complicated the manufacturing process of the aerosol generating matrix, such as the extrusion process, the more difficult it is to extrude the aerosol generating matrix, and the lower the yield rate.

[0104] If the minimum spacing between two adjacent subunits 2 along the second direction is greater than 1 mm, the medium mass of the subunit 2 is small, so that less aerosol is generated and the gap space 2a for circulating aerosol is relatively large, and the generated aerosol is difficult to meet the suction demand.

[0105] Therefore, the minimum spacing between two adjacent subunits 2 along the second direction is 0.1 mm to 1 mm, which can balance the aerosol release amount and the suction resistance while ensuring a high manufacturing yield of the aerosol generating substrate.

[0106] In one embodiment, taking the plane perpendicular to the third direction as the projection plane, the ratio of the total projection area of ​​all subunits 2 to the total projection area of ​​all gap spaces 2a is 1:9 to 1:1 (including 1:9 and 1:1). Preferably, the ratio of the total projection area of ​​all subunits 2 to the total projection area of ​​all gap spaces 2a is 1:4 to 1:2 (including 1:4 and 1:2).

[0107] The total projected area of ​​all subunits 2 refers to the sum of the projected areas of all subunits 2. The total projected area of ​​all interstitial spaces 2a refers to the sum of the projected areas of all interstitial spaces 2a.

[0108] In this embodiment, if the ratio of the total projected area of ​​all subunits 2 to the total projected area of ​​all gap spaces 2a is greater than 1:1, the total medium mass of the subunits 2 is relatively high, and the projected area of ​​the release gap is relatively small, the aerosol is easily adsorbed by the solid medium to produce condensation, the aerosol release amount is insufficient, and the effective utilization rate of the solid medium is low. If the ratio of the total projected area of ​​all subunits 2 to the total projected area of ​​all gap spaces 2a is less than 1:9, the projected area of ​​the release gap is relatively large, the flow rate of the aerosol is slow, and it is not easy to be effectively extracted, which is not conducive to the suction experience.

[0109] In one embodiment, please refer to Figure 5 and Figure 6 The base 1 is a plate-like structure, and the wall thickness direction of the base 1 is parallel to the first direction. The wall thickness of the base 1, the wall thickness H1 of the first part 21 and the wall thickness of the second part 22 can be substantially consistent, so as to facilitate manufacturing such as extrusion molding.

[0110] For example, in one embodiment, please refer to Figure 5 and Figure 6 The base 1, the first part 21 and the second part 22 are all plate-shaped structures, the aerosol generating matrix includes two side parts 3, all the subunits 2 are located between the two side parts 3, and all the second parts 22 and the two side parts 3 are connected to the outer surface of the base 1. The projection shape of the aerosol generating matrix is ​​rectangular.

[0111] In one embodiment, please refer to Figures 1 to 4 The base part 1 is a cylindrical structure. The circumferential structure is not only convenient for arranging more subunits 2 on the periphery, but also convenient for molding, such as extrusion molding.

[0112] In one embodiment, please refer to Figures 1 to 4 The base part 1 has an air passage 1a formed inside thereof that runs through at least one end thereof along the third direction. The air passage 1a can also collect and circulate aerosols. The aerosols released by the base part 1 can circulate quickly through the air passage 1a, thereby improving the effective extraction rate of the aerosols.

[0113] In one embodiment, please refer to Figures 1 to 4 , the air passage 1a runs through the two opposite ends of the base part 1 along the third direction. The airflow can flow from one end of the base part 1 to the other end of the base part 1 along the third direction. In this way, the airflow formed by the air carrying the aerosol can flow more smoothly, and the airflow flow resistance is smaller, which can significantly reduce the suction resistance during the suction process and improve the suction experience.

[0114] In one embodiment, please refer to Figure 1 and Figure 2 , the number of airway 1a can be one.

[0115] In one embodiment, please refer to Figure 3 and Figure 4 The number of air channels 1a is multiple, and the multiple air channels 1a are arranged at intervals. On the one hand, the multiple air channels 1a can further increase the porosity of the aerosol generating matrix, which is beneficial to the penetration and / or diffusion of heat and reduces the aerosol flow resistance; on the other hand, the multiple air channels 1a are arranged at intervals, that is, there is a medium wall between each air channel 1a, the pore size of a single air channel 1a can be small, the medium quality is appropriate, and the structural strength of the base part 1 is good.

[0116] In one embodiment, the air channel 1a is a linear air channel 1a extending in a straight line. The linear air channel 1a is easy to form and can reduce the difficulty of manufacturing. The flow resistance of the airflow in the linear air channel 1a is relatively small.

[0117] In one embodiment, the airway 1a is a curved airway 1a, and at least part of the hole section of the curved airway 1a is a curved shape with a non-zero curvature. The curved airway 1a can greatly increase the flow path of the airflow without significantly increasing the length of the aerosol generating substrate, and can extend the contact time between the airflow and the hole wall of the curved airway 1a, thereby improving the aerosol extraction rate.

[0118] In one embodiment, the curved airway 1a is in the shape of a spiral line. That is, the three-dimensional shape of the curved airway 1a is in the shape of a spatial spiral line. The line connecting any point of the spiral curved airway 1a and the starting point has an inclination angle relative to its axis. The spiral curved airway 1a can greatly extend the flow path of the airflow, precipitate the aerosol from the aerosol generating matrix into the curved airway 1a, increase the flow speed of the aerosol in the aerosol generating matrix, thereby increasing the impact force of the airflow, allowing the aerosol to be evenly mixed, improving the uniformity of the aerosol, and enhancing the user's inhalation experience.

[0119] There is no limitation on the projected shape of the airway 1a. For example, the projected shape of the airway 1a can be circular, polygonal (including but not limited to triangle, square, prism, etc.), elliptical, runway-shaped or irregular, etc., where irregular refers to other symmetrical or asymmetrical shapes other than the shapes listed above.

[0120] It should be noted that, in the implementation of this application, unless otherwise specified, the projection plane refers to a plane perpendicular to the third direction.

[0121] In one embodiment, please refer to Figure 3 and Figure 4 The base portion 1 includes a circular air channel 1a and a plurality of fan-shaped air channels 1a, and the plurality of fan-shaped air channels 1a are arranged at intervals around the circular air channel 1a.

[0122] It is understandable that the multiple airways 1a may also be arranged in one dimension, in a two-dimensional matrix, or in a plurality of concentric circles, etc. The arrangement of the multiple airways 1a is not limited.

[0123] Exemplarily, in one embodiment, the number of air channels 1a is 4, and the 4 air channels 1a are all fan-shaped, and the 4 fan-shaped air channels 1a are evenly distributed. In this way, the projection of the medium wall in the base 1 is roughly in the shape of a "cross". In one embodiment, the number of air channels 1a is 8, and the 8 air channels 1a are all fan-shaped, and the 8 fan-shaped air channels 1a are evenly distributed. In this way, the projection of the medium wall in the base 1 is roughly in the shape of a "rice".

[0124] It should be noted that micropores may exist inside the aerosol generating matrix. For example, for the aerosol generating matrix of the particle combination, the gaps between the particles constitute micropores. However, the airway 1a described in the present application is different from the micropores. The airway 1a described in the present application is a hole in the macroscopic sense, and the micropores are holes in the microscopic sense. The projected area and length of the airway 1a are much larger than those of the micropores. The airway 1a is mainly processed by design, for example, by a die. Therefore, the projected area and length of the airway 1a can be changed according to the design requirements, while the size of the micropores is determined by the gaps between the particles. For example, the material is a granular material, and the aerosol generating matrix formed by extrusion of the material has micropores. The projected area and length of the micropores are naturally formed by the extrusion process and the material components. The micropores can be formed by a certain expansion after the material feeding cylinder flows out of the die.

[0125] In one embodiment, at least some of the subunits 2 are made of the same material. For example, some of the subunits 2 may be made of the same material, while other subunits 2 may be made of different materials. For another example, all of the subunits 2 may be made of the same material. In this way, the manufacturing equipment is simple. For example, in the extrusion process, the structure of the extruder is simple.

[0126] In one embodiment, all subunits 2 may be made of different materials. In this way, different subunits 2 can release aerosols of different flavors, providing more options.

[0127] In one embodiment, at least some of the subunits 2 have the same projection shape. For example, some of the subunits 2 may have different projection shapes, and other subunits 2 may have the same projection shape. For another example, all of the subunits 2 may have the same projection shape. In this way, the die of the extruder, such as the die structure, is simple.

[0128] In one embodiment, the projection shapes of all subunits 2 may be different. In this way, a more refreshing or mellow taste can be provided, and different heating methods can be matched to provide a richer taste.

[0129] In one embodiment, the volumes of all gap spaces 2a may be the same.

[0130] In one embodiment, at least some of the gap spaces 2a have different volumes. For example, some of the gap spaces 2a may have different volumes, while other parts of the gap spaces 2a may have the same volumes. For another example, all of the gap spaces 2a may have different volumes.

[0131] In one embodiment, at least some of the subunits 2 are evenly distributed along the second direction. For example, some of the subunits 2 are evenly distributed along the second direction, and other parts of the subunits 2 are unevenly distributed along the second direction. For another example, all of the subunits 2 are evenly distributed along the second direction. With this design, the medium mass distribution of different parts of the aerosol generating matrix is ​​close to the same, and the gap space 2a of different parts of the aerosol generating matrix is ​​close to the same, so that the release amount and flow resistance of the aerosol in different parts of the aerosol generating matrix are consistent, so that the uniformity of aerosol release during the puffing process can be improved, and the puffing amount of each puff during the puffing process is consistent, thereby improving the puffing consistency and providing a good puffing experience.

[0132] For example, in some embodiments, please refer to Figures 1 to 6 , the uniform distribution of the subunits 2 along the second direction includes: the projection shapes of the subunits 2 are the same, and the projection shapes of the gap spaces 2a are the same. For example, the projection shapes of the subunits 2 are the same, and the subunits 2 are one-dimensionally distributed along the plate-shaped base 1 or concentrically distributed around the cylindrical base 1. In other words, the arrangement of the subunits 2 themselves is uniform.

[0133] In one embodiment, all subunits 2 are unevenly distributed along the second direction. In this way, according to the puffing requirements, the unevenly distributed subunits 2 can be used in different heating methods, which can not only achieve uniform heating of the aerosol generating matrix, but also achieve aerosol consistency in the first few puffs and the last few puffs during the puffing process.

[0134] In some embodiments, the functional segment may only be provided with a filtering segment.

[0135] In some other embodiments, the functional section further includes a cooling section, which is located between the filtering section and the aerosol generating matrix, and is used to cool the aerosol before the filtering section filters the aerosol. The cooling section can improve the "hot mouth" phenomenon when the user inhales the aerosol.

[0136] The cooling materials used in the cooling section include but are not limited to one or more combinations of PE (polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), acetate fiber, acrylic fiber and the like.

[0137] The filter materials used in the filter section include but are not limited to one or more combinations of PE (polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), acetate fiber, acrylic fiber and the like.

[0138] The materials of the cooling section and the filtering section can be the same or different.

[0139] In one embodiment, the aerosol-generating matrix includes plant raw materials, auxiliary raw materials, smoke-generating agent raw materials, adhesive raw materials, and flavor raw materials.

[0140] Plant raw materials are used to generate aerosols when heated. Auxiliary raw materials are used to provide skeleton support for plant raw materials. Smoke-generating agent raw materials are used to generate a large amount of smoke when heated. Adhesive raw materials are used to bond component raw materials. Flavor raw materials are used to provide characteristic aromas. In this way, plant raw materials and smoke-generating agent raw materials can ensure the amount of aerosol generated, while flavor raw materials can enhance the release of aroma during the inhalation process and improve user experience. Auxiliary raw materials can not only improve the fluidity of the mixed materials, but also make the aerosol generation matrix porous to facilitate the extraction and flow of aerosols. Adhesive raw materials ensure that plant raw material powder and auxiliary agents form a stable mixture to avoid loose structure.

[0141] In one embodiment, the plant raw material is one or more combinations of powders formed by crushing tobacco raw materials, tobacco leaf fragments, tobacco stems, tobacco dust, and aromatic plants. The plant raw material is the core source of flavor. The endogenous substances in the plant raw material can produce physiological satisfaction for the user. The endogenous substances, such as alkaloids, enter the human blood and promote the pituitary gland to produce dopamine, thereby obtaining physiological satisfaction.

[0142] In one embodiment, the auxiliary agent raw material can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Among them, the inorganic filler includes one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. The inorganic filler can provide a skeleton support for the plant raw material, and the inorganic filler also has micropores, which can increase the porosity of the aerosol generation matrix, thereby increasing the aerosol release rate.

[0143] The lubricant includes one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricant can increase the fluidity of the plant raw material powder, reduce the friction between the plant raw material powders, make the overall density of the plant raw material powder distribution more uniform, and also reduce the pressure required in the extrusion molding process and reduce the wear of the die.

[0144] The emulsifier includes one or more combinations of polyglycerol fatty acid ester, Tween-80, and polyvinyl alcohol. The emulsifier can slow down the loss of flavor substances during storage to a certain extent, increase the stability of flavor substances, and improve the sensory quality of the product.

[0145] In one embodiment, the smoke-generating agent raw material may include: a monohydric alcohol (such as menthol); a polyhydric alcohol (such as propylene glycol, glycerol, triethylene glycol, 1,3-butylene glycol and tetraethylene glycol); an ester of a polyhydric alcohol (such as triacetin, triethyl citrate, a mixture of diacetin esters, triethyl citrate, benzyl benzoate, glyceryl tributyrate); a monocarboxylic acid; a dicarboxylic acid; a polycarboxylic acid (such as lauric acid, myristic acid) or an aliphatic ester of a polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butylene glycol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, a mixture of diacetin esters, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenylacetate, ethyl vanillate, glyceryl tributyrate, lauryl acetate) or one or more combinations thereof.

[0146] In one embodiment, the adhesive raw material is in close contact with the component raw material interface by wetting, generating intermolecular attraction, thereby playing the role of bonding the component raw materials such as powders, liquids, etc. The adhesive raw material can be a natural plant extract, a non-ionized modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, guar gum, and modified cellulose (such as carboxymethyl cellulose). The adhesive is used to bond the particles together, which is not easy to loosen. In addition, it improves the water resistance of the aerosol generation matrix and is harmless to the human body.

[0147] In one embodiment, the flavor raw material is used to provide a characteristic aroma, such as a solid or liquid substance of hay aroma, roasted sweet aroma, and nicotine. The flavor raw material may include one or more combinations of tobacco, flavor plant extracts, extracts, essential oils, and absolute oils; the flavor raw material may include one or more combinations of monomer flavor substances, such as megastigmatriene, neophytadiene, geraniol, nerol, and the like.

[0148] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0149] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. An aerosol generating substrate, characterized in that include: Basic Department; A plurality of subunits are located outside the base portion along a first direction, and the plurality of subunits are spaced apart along a second direction of the base portion, and a space between two adjacent subunits is a gap space, wherein the first direction intersects with the second direction.

2. The aerosol-generating substrate according to claim 1, characterized in that The subunit comprises a first part and a second part, the second part and the first part are arranged along a first direction, and a size of the first part along the second direction is greater than a size of the second part along the second direction; The second portion connects the base portion and the first portion, or the first portion connects the base portion and the second portion.

3. The aerosol-generating substrate according to claim 2, characterized in that The subunit includes one first part and a plurality of second parts, wherein the plurality of second parts are arranged at intervals along a second direction and are located inside the first part, and the second part connects the base part and the first part.

4. The aerosol-generating substrate according to claim 2, characterized in that A distance between two adjacent first parts along the second direction is a first distance, and a ratio of a size of the first part along the second direction to the first distance is between 10:1 and 1:

1.

5. The aerosol-generating substrate according to claim 2, characterized in that The wall thickness of the first portion is 0.1 mm to 0.5 mm.

6. The aerosol-generating substrate according to claim 2, characterized in that A dimension of the second portion along the first direction is 0.5 mm to 5 mm.

7. The aerosol-generating substrate according to claim 2, characterized in that A ratio of a size of the first portion along the second direction to a size of the second portion along the first direction is 1:2 to 2:

1.

8. The aerosol-generating substrate according to claim 1, characterized in that The difference between the maximum wall thickness and the minimum wall thickness of the aerosol generating substrate is a first difference, and the percentage of the first difference to the minimum wall thickness of the aerosol generating substrate is 0% to 100%.

9. The aerosol-generating substrate according to claim 1, characterized in that Taking the plane perpendicular to the third direction as the projection plane, the hydraulic diameter of the projection shape of the aerosol generating substrate is 5 mm to 15 mm.

10. The aerosol-generating substrate according to claim 1, characterized in that The number of the subunits is between 6 and 30.

11. The aerosol-generating substrate according to claim 1, characterized in that The minimum distance between two adjacent subunits along the second direction is 0.1 mm to 1 mm.

12. The aerosol-generating substrate of claim 1, wherein Taking the plane perpendicular to the third direction as the projection plane, the total projection area of ​​all the sub-units and the total projection area of ​​all the gap spaces are between 1:9 and 1:

1.

13. The aerosol-generating substrate of claim 1, wherein: The base part is a plate-like structure, and the wall thickness direction of the base part is consistent with the first direction; or, The base part is in a cylindrical structure.

14. The aerosol-generating substrate of claim 1, wherein An air passage is formed inside the base portion and passes through at least one end thereof along the third direction.

15. The aerosol-generating substrate according to claim 14, characterized in that There are multiple airways, and the multiple airways are arranged at intervals.

16. The aerosol-generating substrate of claim 1, wherein: The outer side of the aerosol generating substrate is provided with a heat generating layer, the heat generating layer is arranged on the outer surface of the subunit and can heat the subunit; and / or, Taking the plane perpendicular to the third direction as the projection plane, the projection shape of the aerosol generating substrate is circular, elliptical or polygonal.

17. The aerosol-generating substrate of claim 1, wherein: The subunit is located at the outermost side of the aerosol generating substrate along the first direction; and / or, Taking a plane perpendicular to the third direction as a cross section, the cross section at any position of the subunit is the same, wherein the first direction and the third direction are perpendicular to each other.

18. The aerosol-generating substrate of claim 1, wherein: The first direction and the second direction are perpendicular to each other; or, The first direction is the radial direction, and the second direction is the circumferential direction.

19. An aerosol generating article, characterized in that include: The aerosol-generating substrate according to any one of claims 1 to 18; The functional segment is arranged at one end of the aerosol generating substrate along the third direction, and the functional segment at least includes a filtering segment for filtering aerosol.

20. An electronic atomization device, characterized in that: include: The aerosol generating article of claim 19; A heating element is arranged on the outer side of the subunit along the first direction, and is used to heat the aerosol generating substrate to generate aerosol.

21. The electronic atomization device according to claim 20, characterized in that: The heating element is a laser heater.

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