Aerosol generating substrate and aerosol generating product

Abstract

The invention relates to the technical field of aerosol generation, and provides an aerosol generation substrate and an aerosol generation product, the aerosol generation substrate comprises a plurality of annular medium walls and a plurality of radiation medium walls, the plurality of annular medium walls are arranged at intervals along the radial direction, the radial distance between two adjacent annular medium walls is a spacing, and the radiation medium walls are arranged at intervals along the radial direction. The thicknesses of the at least two annular dielectric walls are different and / or the distances between the at least two annular dielectric walls are different; each radiation medium wall is connected with the two adjacent annular medium walls, and the two adjacent annular medium walls and the two adjacent radiation medium walls jointly define an air channel hole. The thicknesses of the at least two annular medium walls are different and / or the distances between the at least two annular medium walls are different, so that the medium contents of the annular medium walls are different and / or the heat transfer efficiency is different, the amount of aerosol released by the aerosol generating substrate in the puff-by-puff suction process tends to be consistent, and the puff-by-puff suction consistency of the aerosol is improved.

Description

Technical Field

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

[0002] This section is intended to provide a background or context to the embodiments of the application that are recited in the claims. No description herein is admitted to be prior art by inclusion in this section.

[0003] 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.

[0004] In the related art, a heating element is disposed inside or outside an aerosol generating substrate to heat the aerosol generating substrate to generate an aerosol. When the aerosol generating substrate is heated by the heating element, there is a problem of poor consistency of the aerosol from mouth to mouth. Summary of the invention

[0005] In view of this, the embodiments of the present application hope to provide an aerosol-generating substrate and an aerosol-generating product that can improve the puff-by-puff consistency of the aerosol.

[0006] To achieve the above-mentioned purpose, the present application provides an aerosol generating substrate, including:

[0007] A plurality of annular dielectric walls, wherein the plurality of annular dielectric walls are arranged at intervals in the radial direction, a distance between two adjacent annular dielectric walls in the radial direction is a spacing, and at least two annular dielectric walls have different thicknesses and / or at least two spacings are different;

[0008] A plurality of radiation medium walls, each of which connects two adjacent annular medium walls, and the two adjacent annular medium walls and the two adjacent radiation medium walls jointly define an airway hole.

[0009] In some embodiments, the thicknesses of the plurality of annular medium walls increase or decrease radially from the inside to the outside.

[0010] In some embodiments, the annular dielectric wall located at the radially innermost layer is a first annular dielectric wall, and each of the annular dielectric walls located radially outside the first annular dielectric wall is a second annular dielectric wall. The thickness of at least one of all the second annular dielectric walls is greater than the thickness of the first annular dielectric wall, and the thickness of at least one of all the second annular dielectric walls is less than the thickness of the first annular dielectric wall.

[0011] In some embodiments, the plurality of intervals gradually increase or decrease from inside to outside in the radial direction.

[0012] In some embodiments, the spacing located at the radially innermost layer is a first spacing, and each of the spacings located radially outside the first spacing is a second spacing, at least one of all the second spacings is greater than the first spacing, and at least one of all the second spacings is less than the first spacing.

[0013] In some embodiments, the aerosol-generating substrate is an integral structure formed by extrusion and has micropores.

[0014] In some embodiments, at least one of the annular medium walls is formed with a notch.

[0015] In some embodiments, a single annular medium wall forms a plurality of notches, and the plurality of notches are spaced apart along the circumferential direction.

[0016] In some embodiments, the aerosol generating substrate includes mass-enhancing ribs, and at least one of the annular medium walls is provided with the mass-enhancing ribs, and the mass-enhancing ribs protrude from at least one side of the annular medium wall where the mass-enhancing ribs are located in the radial direction.

[0017] In some embodiments, a plurality of mass-enhancing ribs of a single annular medium wall are arranged at intervals along the circumferential direction.

[0018] In some embodiments, the aerosol generating matrix includes a plurality of protruding medium walls, which are circumferentially spaced apart on the outer peripheral surface of the outermost annular medium wall, and two adjacent protruding medium walls and the outer peripheral surface of the outermost annular medium wall jointly define an airway groove.

[0019] In some embodiments, taking a plane perpendicular to the longitudinal direction as a cross section, the cross-sectional shape of the airway groove is semicircular, trapezoidal, V-shaped or U-shaped.

[0020] In some embodiments, taking a plane perpendicular to the longitudinal direction as a cross section, the cross-sectional shape of the airway hole is fan-shaped, a partial ring-shaped, polygonal, or quasi-polygonal.

[0021] In some embodiments, the plurality of airway holes defined by two adjacent annular medium walls are evenly distributed or unevenly distributed in the circumferential direction.

[0022] In some embodiments, taking a plane perpendicular to the longitudinal direction as a projection plane, the projection of the aerosol generating substrate is an axially symmetrical figure or a centrally symmetrical figure.

[0023] In some embodiments, taking a plane perpendicular to the longitudinal direction as a cross section, the length of any side of the cross-sectional shape of the airway hole is between 0.05 mm and 6 mm.

[0024] In some embodiments, taking a plane perpendicular to the longitudinal direction as a cross section, the hydraulic diameter of the annular medium wall located at the outermost layer in the radial direction is 4 mm to 10 mm.

[0025] In some embodiments, the thickness of the annular medium wall is 0.05 mm to 2 mm.

[0026] In some embodiments, the thickness of the radioactive medium wall is 0.05 mm to 1 mm, and the absolute value of the difference in thickness between any two of the annular medium walls is 0.01 mm to 0.5 mm.

[0027] An embodiment of the present application also provides an aerosol generating product, comprising a functional segment, a wrapping layer and an aerosol generating substrate as described above, wherein the functional segment is arranged at one end of the aerosol generating substrate in the longitudinal direction, and the wrapping layer wraps around the periphery of the functional segment and the periphery of the aerosol generating substrate.

[0028] The aerosol generating matrix provided in the embodiment of the present application has a radiant medium wall that can connect two adjacent annular medium walls, so that the aerosol generating matrix is ​​a whole, and the radiant medium wall contacts the two adjacent annular medium walls to provide heat transfer in the form of heat conduction, and the two adjacent annular medium walls can also transfer heat through the airflow in the airway hole. The thickness of at least two annular medium walls is different, so that the volume and mass of the annular medium walls are different; at least two spacings are different, so that the size of the heat transfer path during the heat transfer process is different, and the number of puffs corresponding to the annular medium wall can also be adjusted; the above methods all make the medium content and / or heat transfer efficiency of each annular medium wall different, so that the amount of aerosol released by the aerosol generating matrix in the process of puffing one by one tends to be consistent, thereby improving the consistency of aerosol puffing one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of a first aerosol generating substrate in one embodiment of the present application;

[0030] Figure 2 The projection diagram of the first aerosol generation matrix is ​​taken as the projection plane with the plane perpendicular to the longitudinal direction;

[0031] Figure 3 This is a schematic structural diagram of a second aerosol generating substrate in one embodiment of the present application;

[0032] Figure 4 Schematic diagram of the structure of a third aerosol generating substrate in one embodiment of the present application;

[0033] Figure 5 Schematic diagram of the structure of a fourth aerosol generating substrate in one embodiment of the present application;

[0034] Figure 6 Schematic diagram of the structure of the fifth aerosol generating substrate in one embodiment of the present application;

[0035] Figure 7 Schematic diagram of the structure of the sixth aerosol generating substrate in one embodiment of the present application;

[0036] Figure 8 Schematic diagram of the structure of the seventh aerosol generating substrate in one embodiment of the present application;

[0037] Fig. 9 Schematic diagram of the structure of an eighth aerosol generating substrate in an embodiment of the present application;

[0038] Fig.10 Schematic diagram of the structure of the ninth aerosol generating substrate in one embodiment of the present application;

[0039] Fig.11 Schematic diagram of the structure of the tenth aerosol generating substrate in one embodiment of the present application;

[0040] Fig.12 Schematic diagram of the structure of the eleventh aerosol generating substrate in one embodiment of the present application;

[0041] Fig.13 This is a schematic structural diagram of a twelfth aerosol generating substrate in one embodiment of the present application;

[0042] Fig.14 This is a schematic structural diagram of a thirteenth aerosol generating substrate in an embodiment of the present application;

[0043] Fig.15 This is a schematic structural diagram of a fourteenth aerosol generating substrate in an embodiment of the present application;

[0044] Fig.16 This is a schematic structural diagram of a fifteenth aerosol generating substrate in one embodiment of the present application;

[0045] Fig.17 This is a schematic structural diagram of a sixteenth aerosol generating substrate in an embodiment of the present application;

[0046] Fig.18 This is a schematic structural diagram of a seventeenth aerosol generating substrate in one embodiment of the present application;

[0047] Fig.19 This is a schematic structural diagram of an eighteenth aerosol generating substrate in one embodiment of the present application;

[0048] Fig. 20 This is a schematic structural diagram of a nineteenth aerosol generating substrate in an embodiment of the present application;

[0049] Fig.21 This is a schematic structural diagram of the twentieth aerosol generating substrate in one embodiment of the present application;

[0050] Fig. 22 This is a schematic structural diagram of a twenty-first aerosol generating substrate in an embodiment of the present application;

[0051] Fig.23 This is a schematic structural diagram of a twenty-second aerosol generating substrate in an embodiment of the present application;

[0052] Fig.24 This is a schematic structural diagram of the twenty-third aerosol generating substrate in one embodiment of the present application;

[0053] Fig.25 This is a schematic structural diagram of the twenty-fourth aerosol generating substrate in one embodiment of the present application;

[0054] Fig.26 is a schematic structural diagram of a first aerosol generating product in one embodiment of the present application;

[0055] Fig. 27 for Fig.26 A cross-sectional view of a first aerosol-generating article is shown.

[0056] Description of Reference Numerals

[0057] Aerosol generating matrix 100; airway hole 100a; airway groove 100b; annular medium wall 1; notch 1a; radiating medium wall 2; quality enhancement ribs 3; protruding medium wall 4; functional section 200; filtering section 210; cooling section 220; wrapping layer 300. DETAILED DESCRIPTION

[0058] 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.

[0059] In this application, a plurality includes two and more than two. The unit "mm" is millimeter.

[0060] The heating element is arranged inside the aerosol-generating substrate 100 to perform central heating on the aerosol-generating substrate 100. Central heating means that the heating element is inserted into the aerosol-generating substrate 100 to heat the aerosol-generating substrate 100 from the inside to the outside in the radial direction. The heating element is arranged at the periphery of the aerosol-generating substrate 100 to perform circumferential heating on the aerosol-generating substrate 100. Circumferential heating means that the heating element is arranged at the periphery of the aerosol-generating substrate 100 to heat the aerosol-generating substrate 100 from the outside to the inside in the radial direction.

[0061] The user inhales the aerosol one puff at a time, that is, the user inhales one puff of the aerosol, stops inhaling, and then inhales the next puff of the aerosol, and in this way, the user inhales intermittently. The front section of the inhalation refers to the period of initial use of the aerosol generating matrix 100, and the first few puffs of the inhalation correspond to the front section of the inhalation; the back section of the inhalation refers to the period when the aerosol generating matrix 100 is close to complete aerosol release, and the last few puffs of the inhalation correspond to the back section of the inhalation. The front section and the back section of the inhalation refer to the early stage and the late stage of the use life cycle of the aerosol generating matrix 100, respectively.

[0062] In the related art, if circumferential heating is used, the direction of heat transfer is radially from the periphery to the center. During the heat transfer process, the circumference of the aerosol-generating matrix gradually decreases, that is, the volume of the heated medium gradually decreases, and the mass of the heated medium gradually decreases, which can easily lead to too fast aerosol release in the front stage of suction, that is, it can easily lead to too strong satisfaction in the first few puffs of suction, and serious attenuation in the latter stage of suction. If central heating is used, the direction of heat transfer is radially from the center to the periphery. During the heat transfer process, the circumference of the aerosol-generating matrix gradually increases, that is, the volume of the heated medium gradually increases, and the mass of the heated medium gradually increases, which can easily lead to a slower release of effective substances such as aerosol in the front stage of suction, poor taste in the first few puffs of suction, and excessive baking of the central area in the latter stage of suction, causing problems with impurities.

[0063] In view of this, please refer to Figure 1 and Figure 2 The embodiment of the present application provides an aerosol generating substrate 100 , and the aerosol generating substrate 100 includes a plurality of annular medium walls 1 and a plurality of radiation medium walls 2 .

[0064] See also Figure 2 A plurality of annular dielectric walls 1 are arranged at intervals in the radial direction, the distance between two adjacent annular dielectric walls 1 in the radial direction is a spacing L, and the thickness H of at least two annular dielectric walls 1 is different and / or at least two spacings L are different.

[0065] The inner surface of the innermost annular medium wall 1 in the radial direction and / or the outer surface of the outermost annular medium wall 1 in the radial direction are the heating surfaces. The heating surfaces are used to face the heating element to receive heat from the heating element. If the inner surface of the innermost annular medium wall 1 in the radial direction is the heating surface, central heating is adopted. If the outer surface of the outermost annular medium wall 1 in the radial direction is the heating surface, circumferential heating is adopted.

[0066] It can be understood that the annular dielectric wall 1 is a solid structure, and the thickness H of the annular dielectric wall 1 refers to the dimension of the annular dielectric wall 1 along the radial direction.

[0067] See also Figure 1 and Figure 2 Each radiation medium wall 2 connects two adjacent annular medium walls 1, and the two adjacent annular medium walls 1 and the two adjacent radiation medium walls 2 jointly define an airway hole 100a.

[0068] The airway hole 100a is connected at both ends in the longitudinal direction. The aerosol generated by the annular medium wall 1 and the radiation medium wall 2 when heated can be collected in the airway hole 100a. The airway hole 100a plays a guiding role in collecting the aerosol and making the aerosol flow roughly in the longitudinal direction. The aerosol can be delivered more smoothly and orderly through the airway hole 100a, and the flow resistance of the aerosol in the airway hole 100a is smaller and the controllability is good, which can effectively improve the aerosol extraction efficiency and enhance the suction experience.

[0069] In the aerosol generating matrix 100 provided in the embodiment of the present application, the radiant medium wall 2 can connect two adjacent annular medium walls 1, so that the aerosol generating matrix 100 is a whole, and the radiant medium wall 2 contacts the two adjacent annular medium walls 1 to provide heat transfer in the form of heat conduction, and the two adjacent annular medium walls 1 can also transfer heat through the airflow in the airway hole 100a. The thickness H of at least two annular medium walls 1 is different, so that the volume and mass of the annular medium walls 1 are different; at least two spacings L are different, so that the size of the heat transfer path in the heat transfer process is different, and the number of puffs corresponding to the annular medium wall 1 can also be adjusted; the above methods all make the medium content and / or heat transfer efficiency of each annular medium wall 1 different, so that the amount of aerosol released by the aerosol generating matrix 100 in the process of puffing one by one tends to be consistent, thereby improving the consistency of aerosol puffing one by one.

[0070] It should be noted that the radial direction is perpendicular to the longitudinal direction, and the radial direction is the direction of the ray passing through the center line of the aerosol generating substrate 100 in a plane perpendicular to the longitudinal direction. The inner side refers to the side close to the center line in the radial direction, and the outer side is opposite to the inner side, and the outer side refers to the side far from the center line in the radial direction.

[0071] See also Fig.26 and Fig. 27The embodiment of the present application also provides an aerosol generating product, which includes a functional segment 200, a wrapping layer 300 and the aerosol generating substrate 100 in any embodiment of the present application. The functional segment 200 is arranged at one end of the aerosol generating substrate 100 in the longitudinal direction, and the wrapping layer 300 wraps around the periphery of the functional segment 200 and the periphery of the aerosol generating substrate 100.

[0072] The functional section 200 provides at least one of the functions of aerosol gathering, dilution, cooling, interception and compensation.

[0073] The wrapping layer 300 is used to connect the aerosol generating substrate 100 and the functional segment 200 into a whole.

[0074] The aerosol generating article is used for the user to inhale the aerosol generated by the aerosol generating substrate 100. Exemplarily, one end of the aerosol generating article in the longitudinal direction faces the user, and the user inhales to generate negative suction pressure, and the aerosol generated by the aerosol generating substrate 100 flows through the functional section 200 under the action of the negative suction pressure and is then delivered to the user. That is, the functional section 200 is downstream of the aerosol generating substrate 100 in the longitudinal direction.

[0075] See also Fig.26 and Fig. 27 In some embodiments, the functional section 200 includes at least one of a filtering section 210 and a cooling section 220. The filtering section 210 is used to filter the aerosol. The cooling section 220 is used to cool the aerosol to prevent the aerosol from being too hot and causing the mouthpiece to be unable to be inhaled.

[0076] For example, the filter section 210 can block substances of target particle size and can also adjust the inhalation resistance. For example, the filter section 210 can filter large-size particles similar to powdery substances. The aerosol filtered by the filter section 210 has a higher consistency in particle size and a more delicate taste.

[0077] See also Fig.26 and Fig. 27 In the case where the functional section 200 includes both the filtering section 210 and the cooling section 220, the filtering section 210 is located at one end of the cooling section 220 that is longitudinally away from the aerosol generating substrate 100. In other words, the cooling section 220 is located between the aerosol generating substrate 100 and the filtering section 210. In this way, the aerosol generated by the aerosol generating substrate 100 flows through the cooling section 220 under the action of the negative suction pressure, and is then transported to the filtering section 210.

[0078] In some embodiments, the wrapping layer 300 wraps around the outer peripheral surface of the aerosol generating substrate 100 , the outer peripheral surface of the filtering section 210 , and the outer peripheral surface of the cooling section 220 .

[0079] For example, the wrapping layer 300 may be one layer, and may be two or more layers depending on the design requirements and manufacturing process of the aerosol generating product.

[0080] The aerosol-generating article may be for use with an aerosol-generating device having a heating element.

[0081] The aerosol generating device provided in the embodiment of the present application is used for the aerosol generating product in any one of the embodiments of the present application. The aerosol generating device includes a heating element, the heating element faces the heating surface, and the heating element is used to heat the aerosol generating substrate 100 to generate an aerosol. In other words, the heat of the heating element is transferred to the heating surface, and then transferred radially in the aerosol generating substrate 100.

[0082] The heating method of the heating element includes, but is not limited to, resistance heating, electromagnetic heating, infrared heating, microwave heating or laser heating. The heat generated by the heating element can be transferred to the aerosol generating substrate 100 in the form of heat convection, heat conduction or heat radiation. The heat transfer in the form of heat convection means that the heating element is not in contact with the aerosol generating substrate 100, the heating element first heats the air, and then the hot air bakes and heats the aerosol generating substrate 100. Heat conduction means that the heating element is in contact with the aerosol generating substrate 100 or with the wrapping layer 300 and conducts heat to the aerosol generating substrate 100. Exemplarily, resistance and electromagnetic heating mainly transfer heat to the aerosol generating substrate 100 in the form of heat conduction or heat convection. Infrared heating, microwave heating or laser heating mainly transfer heat to the aerosol generating substrate 100 in the form of heat radiation. The heating element can heat the aerosol generating substrate 100 in one or more of the three forms of heat conduction, heat convection and heat radiation.

[0083] See also Figures 1 to 25 , with the plane perpendicular to the longitudinal direction as the cross section, the cross-sectional shape of the annular medium wall 1 is not limited to a circle, an ellipse, a polygon or a special shape, etc. Among them, the polygon includes but is not limited to a regular quadrilateral, a prism, a pentagon or a hexagon, etc. Special shape refers to other symmetrical or asymmetrical shapes other than the shapes listed above. For example, the cross-sectional shape of the annular medium wall 1 can be a quasi-polygon. A quasi-polygon refers to a figure composed of multiple arc-shaped line segments connected end to end in a cross section. In other words, the difference between a quasi-polygon and a polygon is that a quasi-polygon is composed of arc-shaped line segments.

[0084] For some examples, see Figure 2 , the cross-sectional shape of all the annular medium walls 1 is circular. In other embodiments, please refer to Figure 5 , the cross-sectional shape of the outermost annular medium wall 1 is circular, and the cross-sectional shapes of the remaining annular medium walls 1 may be polygonal. Figure 3 The cross-sectional shape of the outermost annular medium wall 1 is circular, and the cross-sectional shapes of the remaining annular medium walls 1 can be polygonal.

[0085] In one embodiment, please refer to Figures 1 to 25 , taking the plane perpendicular to the longitudinal direction as the projection plane, the projection shape of the radiation medium wall 2 is a straight line segment extending in the radial direction. A plurality of radiation medium walls 2 located between two adjacent annular medium walls 1 are defined as connection units, and the plurality of connection units are arranged in the radial direction.

[0086] For some examples, see Figure 3 , at least two radial dielectric walls 2 of each connection unit are aligned in the radial direction. Radially aligned means that the two radial dielectric walls 2 are on a straight line extending in the radial direction. For example, see Figure 4 The number of the radiation medium walls 2 of each connection unit is equal, and the multiple radiation medium walls 2 of each connection unit are aligned one by one along the radial direction.

[0087] In some other embodiments, please refer to Figure 1 and Figure 2 At least two radiation medium walls 2 of each connection unit are offset in radial direction. The radial offset means that the two radiation medium walls 2 are not on a straight line extending in radial direction.

[0088] Exemplarily, the length of the annular dielectric wall 1 along the longitudinal direction is equal to the length of the radial dielectric wall 2 along the longitudinal direction. Figures 1 to 25 , the appearance shape of the aerosol generating substrate 100 can be roughly cylindrical. Taking the plane perpendicular to the longitudinal direction as the cross section, the cross-sectional shape of the outermost annular medium wall 1 is circular, and the appearance shape of the aerosol generating substrate 100 can be roughly cylindrical. The cross-sectional shape of the outermost annular medium wall 1 is elliptical, and the appearance shape of the aerosol generating substrate 100 can be roughly elliptical. The cross-sectional shape of the outermost annular medium wall 1 is polygonal, and the appearance shape of the aerosol generating substrate 100 can be roughly prismatic. Among them, the prism includes but is not limited to a cuboid and the like.

[0089] In the embodiment of the present application, the longitudinal direction is the direction in which the aerosol generating article is inserted into and removed from the aerosol generating device. The length of the aerosol generating substrate 100 along the longitudinal direction may be longer, shorter, or the same as the length in other directions.

[0090] For example, when the aerosol generating substrate 100 is cylindrical in appearance, the longitudinal direction is consistent with the axial direction of the cylindrical aerosol generating substrate 100. It should be noted that even if the length of the aerosol generating substrate 100 along the axial direction is less than its diameter, the longitudinal direction of the aerosol generating substrate 100 is still the axial direction. For another example, when the aerosol generating substrate 100 is rectangular in appearance, the longitudinal direction is still the direction in which the aerosol generating product is inserted into and removed from the aerosol generating device, and the longitudinal direction of the aerosol generating substrate 100 can be any direction of the length, width, and height of the rectangular parallelepiped.

[0091] In one embodiment, please refer to Figure 1 and Figure 2 , the thickness of each part of the single annular medium wall 1 along the circumferential direction is consistent. In other words, the thickness H of the single annular medium wall 1 does not change. In this way, the amount of aerosol released from each part of the single annular medium wall 1 along the circumferential direction tends to be consistent.

[0092] In one embodiment, please refer to Figures 1 to 25 The thickness H of the multiple annular medium walls 1 increases or decreases one by one from the inside to the outside in the radial direction. The hydraulic diameter of the cross-sectional shape of the multiple annular medium walls 1 gradually increases from the inside to the outside in the radial direction. By changing the thickness H of the multiple annular medium walls 1, the mass and volume of each annular medium wall 1 are changed, so that the amount of aerosol generated by different puffs during the puffing process tends to be consistent, and the concentration of each puff tends to be consistent, thereby improving the release consistency.

[0093] It should be noted that the hydraulic diameter refers to the ratio of four times the area of ​​the cross-sectional shape to the perimeter when the plane perpendicular to the radial direction is the cross-section; or the hydraulic diameter refers to the ratio of four times the area of ​​the flow section to the perimeter. For example, if the cross-sectional shape is a regular quadrilateral, the hydraulic diameter is the ratio of four times the area of ​​the regular quadrilateral to the perimeter of the regular quadrilateral. For another example, if the cross-sectional shape is a circle, the hydraulic diameter is the diameter of the circle.

[0094] For some examples, see Figures 11 to 18 The thickness of the plurality of annular dielectric walls 1 increases radially from the inside to the outside. The aerosol generating substrate 100 in this embodiment may be centrally heated, that is, the heating element may be disposed in the space surrounded by the innermost annular dielectric wall 1 .

[0095] For some examples, see Figures 1 to 10 The thickness H of the plurality of annular dielectric walls 1 decreases radially from the inside to the outside. The aerosol generating substrate 100 in this embodiment may be heated in a circumferential manner, that is, the heating element may be sleeved on the outer circumference of the outermost annular dielectric wall 1 .

[0096] In some embodiments, the annular medium wall 1 located at the innermost layer along the radial direction is the first annular medium wall, and each annular medium wall 1 located radially outside the first annular medium wall is a second annular medium wall, and the thickness H of at least one of all the second annular medium walls is greater than the thickness H of the first annular medium wall, and the thickness H of at least one of all the second annular medium walls is less than the thickness H of the first annular medium wall. The aerosol generating substrate 100 in this embodiment can adopt the method of circumferential heating and / or central heating, and can also achieve good consistency from mouth to mouth by coordinating the design of changing the spacing L, radiating the medium wall 2, etc., so as to facilitate the flexible design of the annular medium wall 1 and reduce the difficulty of design and production.

[0097] In one embodiment, please refer to Figure 2 , the thickness H of the annular medium wall 1 is 0.05 mm to 2 mm (including 0.05 mm and 2 mm). Preferably, the thickness H of the annular medium wall 1 is 0.1 mm to 0.9 mm (including 0.1 mm and 0.9 mm). Exemplarily, the thickness H of the annular medium wall 1 is 0.05 mm, 0.1 mm, 0.5 mm, 0.9 mm or 2 mm, etc. In this way, both the aerosol release amount and the structural strength can be taken into account.

[0098] In one embodiment, the absolute value of the difference in thickness between any two annular medium walls 1 is 0.01 mm to 0.5 mm (including 0.01 mm and 0.5 mm). Exemplarily, the absolute value of the difference in thickness between any two annular medium walls 1 is 0.01 mm, 0.1 mm, 0.3 mm or 0.5 mm, etc. In the manufacturing process of the aerosol generating matrix 100, such as the extrusion process, since the material for manufacturing the aerosol generating matrix 100 is a solid-liquid mixture and has viscosity, if the absolute value of the difference in thickness between any two annular medium walls 1 is too large or too small, it is easy to cause the annular medium wall 1 to be difficult to form and the yield rate is low. Therefore, the absolute value of the difference in thickness between any two annular medium walls 1 is 0.01 mm to 0.5 mm, which can improve the yield rate.

[0099] In one embodiment, please refer to Figure 2 , the thickness D of the radiation medium wall 2 is 0.05 mm to 1 mm (including 0.05 mm and 1 mm). Preferably, the thickness D of the radiation medium wall 2 is 0.1 mm to 0.5 mm (including 0.1 mm and 0.5 mm). The radiation medium wall 2 plays the role of heat conduction and connection, and can also play the role of supplementing the release of aerosol. The radiation medium wall 2 adopts the above thickness to take into account both thermal conductivity and connection stability.

[0100] It should be noted that the radiation medium wall 2 is a solid structure, and the thickness D of the radiation medium wall 2 refers to the size of the radiation medium wall 2 along the circumferential direction.

[0101] For some examples, see Figures 1 to 25 , the thickness of each radial portion of the single radiation medium wall 2 is consistent. In other words, the thickness D of the single radiation medium wall 2 does not change.

[0102] In some embodiments, the thickness D of a single radiation medium wall 2 gradually increases from the inside to the outside in the radial direction. In other embodiments, the thickness D of a single radiation medium wall 2 gradually decreases from the inside to the outside in the radial direction.

[0103] In some embodiments, at least one of the radiation medium walls 2 is formed with a partition opening. That is, at least one of the radiation medium walls 2 is partially missing to form a partition opening. In this way, the mass of the radiation medium wall 2 can be reduced, and the heat conduction path and heat conduction time can be extended.

[0104] For some examples, see Figures 1 to 25 , multiple spacings L increase or decrease one by one from the inside to the outside in the radial direction. The hydraulic diameters of multiple annular medium walls 1 gradually increase from the inside to the outside in the radial direction. By changing the multiple spacings L, the heat transfer distance and the number of puffs corresponding to each annular medium wall 1 during the suction process are changed, so that the amount of aerosol generated by different puffs during the suction process tends to be consistent, and the concentration of each puff tends to be consistent, thereby improving the release consistency.

[0105] In some embodiments, the plurality of spacings increase radially from the inside to the outside. The aerosol generating substrate 100 in this embodiment may be centrally heated, that is, the heating element may be disposed in the space surrounded by the innermost annular medium wall 1 .

[0106] For some examples, see Figures 1 to 10 The multiple spacings decrease radially from the inside to the outside. The aerosol generating substrate 100 in this embodiment can be heated in a circumferential manner, that is, the heating element can be sleeved on the outer circumference of the outermost annular medium wall 1.

[0107] In some embodiments, the spacing at the innermost layer in the radial direction is the first spacing, and each spacing at the radial outer side of the first spacing is the second spacing, at least one of all the second spacings is greater than the first spacing, and at least one of all the second spacings is less than the first spacing. The aerosol generating substrate 100 in this embodiment can be heated in a circumferential manner and / or centrally, and can also be designed to have good consistency from mouth to mouth by changing the thickness of the annular medium wall 1 and the thickness of the radiation medium wall 2, so as to facilitate the flexible design of the annular medium wall 1 and reduce the difficulty of design and production.

[0108] In one embodiment, the aerosol-generating substrate 100 is a unitary structure.

[0109] For example, the aerosol generating matrix 100 can be made into an integral structure by injection molding, die casting or extrusion, etc. In this way, the aerosol generating matrix 100 is an integral medium during use, such as when heated or after heating, and is not prone to disintegration and falling.

[0110] Extrusion molding refers to a processing method in which the material is pushed toward the discharge port by the screw through the interaction between the barrel and the screw of the extruder, and is formed into an aerosol-generating matrix 100 with a preset cross-sectional shape through an extrusion die, such as a die die.

[0111] For some examples, see Figures 1 to 25 The airway hole 100a may be a straight hole extending in a straight line along the longitudinal direction. The straight hole is easy to form and can reduce the manufacturing difficulty. The flow resistance of the airflow in the straight hole is relatively small.

[0112] For some examples, see Figures 1 to 25 Taking a plane perpendicular to the longitudinal direction as a cross section, the cross section of the airway hole 100a is fan-shaped, a partial ring-shaped, polygonal or quasi-polygonal.

[0113] In some embodiments, the multiple airway holes 100a defined by two adjacent annular medium walls 1 are evenly or unevenly distributed in the circumferential direction. The multiple airway holes 100a defined by two adjacent annular medium walls 1 refer to multiple airway holes 100a on the same annular pattern.

[0114] See also Figure 6 Uniform distribution in the circumferential direction means that the multiple airway holes 100a on the same annular figure are evenly distributed, including that the cross-sectional areas of the various airway holes 100a are roughly equal, and the thickness D of the radiation medium wall 2 surrounding and forming the various airway holes 100a is roughly equal.

[0115] The non-uniform distribution in the circumferential direction means that at least one of the cross-sectional area of ​​each gas passage hole 100 a and the thickness D of the radioactive medium wall 2 surrounding and forming each gas passage hole 100 a is different.

[0116] In this way, the aerosol amount and flow resistance in the multiple airway holes 100a on the same annular pattern tend to be consistent.

[0117] For some examples, see Figure 1 and Figure 2, taking the plane perpendicular to the longitudinal direction as the projection plane, the projection of the aerosol generating substrate 100 is an axisymmetric figure or a centrally symmetrical figure. Specifically, when the projection of the aerosol generating substrate 100 is an axisymmetric figure, the axis of symmetry of the aerosol generating substrate 100 passes through the center line of the aerosol generating substrate 100 extending in the longitudinal direction and is perpendicular to the center line. Specifically, when the projection of the aerosol generating substrate 100 is a centrally symmetrical figure, the center of symmetry of the aerosol generating substrate 100 is on the center line extending in the longitudinal direction. In this way, the aerosol generating substrate 100 is easy to design and manufacture.

[0118] For some examples, see Figure 2 , taking the plane perpendicular to the longitudinal direction as the cross section, the length W of any side of the cross-sectional shape of the airway hole 100a is between 0.05mm and 6mm (including 0.05mm and 6mm). Preferably, the length W of any side of the cross-sectional shape of the airway hole 100a is between 0.1mm and 3mm (including 0.1mm and 3mm). Exemplarily, the length W of any side of the cross-sectional shape of the airway hole 100a is 0.05mm, 1mm, 3mm or 6mm, etc. When the side length W is less than 0.05mm, the processing cost of the aerosol generating matrix 100 is relatively high, and problems such as large suction resistance and low aerosol utilization rate are prone to occur. When the side length W is greater than 6mm, the cross-sectional area of ​​the airway hole 100a is relatively large, so that the internal flow velocity is small, and the aerosol is prone to deposition, resulting in low utilization rate. The length W of any side of the cross-sectional shape of the airway hole 100a is between 0.05 mm and 6 mm, the circumferential and radial dimensions of the airway hole 100a are appropriate, and the cross-sectional area of ​​the airway hole 100a is appropriate, which is convenient for the molding of the airway hole 100a, such as extrusion molding, while taking into account the structural strength and utilization rate of the aerosol generating matrix 100.

[0119] In some embodiments, with a plane perpendicular to the longitudinal direction as a cross section, the hydraulic diameter of the annular medium wall 1 located in the radially outermost layer is 4 mm to 10 mm (including 4 mm and 10 mm). Preferably, the hydraulic diameter of the annular medium wall 1 located in the radially outermost layer is 6 mm to 8.6 mm (including 6 mm and 8.6 mm). In this way, the three-dimensional size of the aerosol generating substrate 100 is relatively suitable, and the size of the aerosol generating substrate 100 in the longitudinal direction is moderate while taking into account the total mass and total volume of the entire aerosol generating substrate 100.

[0120] For some examples, see Fig.24 and Fig.25The aerosol generating matrix 100 includes a plurality of protruding dielectric walls 4, and the plurality of protruding dielectric walls 4 are arranged at intervals along the circumferential direction on the outer peripheral surface of the outermost annular dielectric wall 1, and two adjacent protruding dielectric walls 4 and the outer peripheral surface of the outermost annular dielectric wall 1 jointly define an airway groove 100b. In other words, the airway groove 100b is a groove-shaped structure open to the radial outside. The opening of the airway groove 100b open to the radial outside is covered by the wrapping layer 300 so that the airflow therein flows longitudinally. The airway groove 100b can increase the surface area of ​​the aerosol generating matrix 100, which is beneficial to the extraction of effective ingredients. The airway groove 100b can also reduce the flow rate of the airway hole 100a located at the center of the aerosol generating matrix 100, so that the aerosol is uniformly released during the heating process.

[0121] For some examples, see Fig.24 and Fig.25 Taking the plane perpendicular to the longitudinal direction as the cross section, the cross section of the airway groove 100b is semicircular, trapezoidal, V-shaped or U-shaped. In this way, the airway groove 100b has a simple structure and is easy to form.

[0122] In some embodiments, the aerosol generating matrix 100 is an integral structure formed by extrusion and has micropores. That is, both the annular medium wall 1 and the radiation medium wall 2 have micropores. In this way, the micropores can not only increase the surface area of ​​the aerosol generating matrix 100, facilitate heat transfer, and improve heating efficiency, but also facilitate the aerosol generated by the medium away from the airway hole 100a to be gradually released into the airway hole 100a through the micropores, thereby improving the extraction efficiency of the effective components of the aerosol generating matrix 100.

[0123] Micropores refer to holes with a hydraulic diameter of no more than 100 μm in the flow section. The flow section refers to the section perpendicular to the streamline cluster, i.e. the airflow.

[0124] In some embodiments, the number of micropores is multiple, and at least some of the multiple micropores are connected to form a microchannel. The aerosol generating matrix 100 releases aerosol when heated, and is collected to the airway hole 100a through the microchannel. The aerosol released by the medium exposed to the airway hole 100a (i.e., the material located on the hole surface of the airway hole 100a) can be directly released into the airway hole 100a. The aerosol between adjacent airway holes 100a can also circulate with each other through the microchannel and be transported to the downstream end, i.e., the end where the functional section 200 is located, under the action of the suction negative pressure.

[0125] In some embodiments, the aerosol generating matrix 100 is a particle combination, that is, the annular medium wall 1 and the radiation medium wall 2 are both composed of particles. There are micropores between the particles of the particle combination. For example, the flow cross-sectional area and length of the micropores are naturally formed by the material components, and the material components can expand to a certain extent to form micropores. The aerosol can flow through the microchannel.

[0126] It should be noted that the micropores described in the present application are different from the airway holes 100a. The micropores are disordered. Disorder means that it is difficult to generate them in an orderly manner according to the design. In other words, the micropores are randomly generated. The airway holes 100a are ordered, which means that they are mainly formed by design and processing and are predictable. The airway holes 100a described in the present application are holes in the macroscopic sense, while the micropores are holes in the microscopic sense. The area and length of the flow cross-section of the airway holes 100a are much larger than those of the micropores. The airway hole 100a is mainly processed by design. For example, the airway hole 100a is processed by a mold such as a die. Therefore, the flow section of the airway hole 100a, such as the cross-sectional area and length, can be changed according to the design requirements, and the size of the micropores is determined by the gaps between the particles. For example, the material is granular, and the aerosol generating matrix 100 formed by extrusion of the material has micropores. The flow cross-sectional area and length of the micropores are naturally formed by the extrusion process and the material components. After the material flows out of the die, it expands to a certain extent to form micropores.

[0127] For some examples, see Fig.10 , Fig.19 and Fig. 20 , at least one annular medium wall 1 is formed with a gap 1a. At least one annular medium wall 1 is partially missing to form the gap 1a. Exemplarily, one annular medium wall 1 may be formed with a gap 1a, or multiple annular medium walls 1 may be formed with gaps 1a. The gap 1a can reduce a portion of the mass of the annular medium wall 1, playing a heat-insulating role, which can not only extend the heat transfer path and heat transfer time, slow down the heat transfer, but also reduce the volume and mass of the corresponding number of mouthfuls of heated medium, and reduce the aerosol release amount of the corresponding number of mouthfuls.

[0128] For example, in some embodiments, please refer to Fig.10 , Fig.19 and Fig. 20 The notch 1a can penetrate the two longitudinal end faces of the annular dielectric wall 1. The notch 1a can make a circle of the annular dielectric wall 1 open or cut into multiple sections.

[0129] For some examples, see Fig.10 , Fig.19 and Fig. 20 A single annular medium wall 1 forms a plurality of notches 1a, and the plurality of notches 1a are arranged at intervals along the circumferential direction. In this way, the heat transfer path and heat transfer time of each area in the circumferential direction can be extended.

[0130] In some embodiments, the size of the notch 1a along the circumferential direction is 0.2 mm to 5 mm (including 0.2 mm and 5 mm). Preferably, the size of the notch 1a along the circumferential direction is 1 mm to 3 mm (including 1 mm and 3 mm). Exemplarily, the size of the notch 1a along the circumferential direction is 0.2 mm, 0.5 mm, 1.0 mm, 1.5 mm, 2 mm, 3 mm, 4 mm or 5 mm, etc. In this way, both the structural strength and the heat transfer efficiency of the annular medium wall 1 can be taken into account.

[0131] For some examples, see Fig.10 , Fig. 22 and Fig.23 The aerosol generating matrix 100 includes a mass-enhancing rib 3, and at least one annular medium wall 1 is provided with the mass-enhancing rib 3, and the mass-enhancing rib 3 protrudes from at least one side of the annular medium wall 1 in the radial direction. For example, one annular medium wall 1 may be provided with the mass-enhancing rib 3, or multiple annular medium walls 1 may be provided with the mass-enhancing rib 3. The mass-enhancing rib 3 can increase the mass and volume of the annular medium wall 1 where it is located, and improve the aerosol release amount of the corresponding number of puffs.

[0132] For some examples, see Fig.23 The multiple mass-enhancing ribs 3 of a single annular medium wall 1 are arranged at intervals along the circumferential direction. In this way, the mass and volume of each part of the single annular medium wall 1 in the circumferential direction can be increased.

[0133] In some embodiments, the hydraulic diameter of the cross-sectional shape of the mass-enhancing rib 3 is 0.2 mm to 2 mm (including 0.2 mm and 2 mm) with the plane perpendicular to the longitudinal direction as the cross-sectional shape. Preferably, the hydraulic diameter of the cross-sectional shape of the mass-enhancing rib 3 is 0.3 mm to 0.8 mm (including 0.3 mm and 0.8 mm). Exemplarily, the hydraulic diameter of the cross-sectional shape of the mass-enhancing rib 3 is 0.2 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1 mm, 1.5 mm or 2 mm, etc. In this way, the mass-enhancing rib 3 can be prevented from affecting the extrusion molding of the two adjacent annular medium walls 1.

[0134] For some examples, see Fig.10 , Fig. 22 and Fig.23 The cross-section of the reinforcing rib 3 can be roughly in a regular shape such as a circle, an ellipse, a triangle or a polygon. The cross-section of the reinforcing rib 3 can be roughly in an irregular shape such as a special shape.

[0135] The following schematically shows a specific embodiment, which is described in detail as follows:

[0136] In the first specific embodiment, please refer to Figure 1 and Figure 2The annular medium wall 1 and the radiation medium wall 2 are both formed with micropores, and the microchannels formed by the micropores are connected to the airway hole 100a. The thickness H of the multiple annular medium walls 1 increases one by one from the outside to the inside along the radial direction, and the spacing L gradually increases from the outside to the inside along the radial direction. The aerosol generating substrate 100 in this embodiment is adapted for circumferential heating. During the heating process from the outside to the inside, the heat gradually enters the innermost layer from the outermost layer along the radial direction. Since the diameter of the innermost annular medium wall 1 is smaller, if the thickness H of each annular medium wall 1 is equal, the volume of a circle of annular medium wall 1 is also gradually reduced. Therefore, the thickness H of each annular medium wall 1 is thickened layer by layer from the outside to the inside to ensure that there is a sufficient volume of medium to release aerosols in different puffing periods. At the same time, the spacing L is also appropriately adjusted to increase from the outside to the inside, which can ensure that in the process of heat transfer from the outside to the inside, the annular medium walls 1 of different layers can be heated at the appropriate number of puffs. The thin-walled annular medium wall 1 close to the outer layer is more conducive to the rapid release of aerosols in the first few puffs of puffing. As the puffing time and the number of puffs increase, the heat gradually penetrates into the thicker middle layer and the innermost annular medium wall 1, which can ensure the aerosol release in the middle and last few puffs of puffing. In addition, during the inhalation process, the aerosol generated by the medium on the hole surface away from the airway hole 100a is gradually released through the micropores, which can improve the uniformity and utilization rate of the medium during the heating process and ensure the consistency of aerosol release from mouth to mouth to the greatest extent.

[0137] In the second specific embodiment, please refer to Fig.11 The annular medium wall 1 and the radial medium wall 2 are both formed with micropores, and the microchannels formed by the micropores are connected to the airway hole 100a. The thickness of the multiple annular medium walls 1 increases one by one from the inside to the outside, and the spacing increases gradually from the inside to the outside in the radial direction. The aerosol generating matrix 100 in this embodiment is adapted for central heating. In the heating process from the inside to the outside, the heat gradually enters the outermost layer from the innermost layer along the radial direction. Since the diameter of the innermost annular medium wall 1 is smaller, the thickness of the annular medium wall 1 is thickened layer by layer from the inside to the outside to ensure that there is a sufficient volume of medium to release aerosols in different suction periods; at the same time, the spacing is also appropriately adjusted to increase from the inside to the outside, which can ensure that in the process of heat transfer from the inside to the outside, the annular medium walls 1 of different layers can be heated at the appropriate number of puffs. The annular medium wall 1 close to the inner layer is more conducive to the rapid release of aerosols in the first few puffs of suction. As the puff time and the number of puffs increase, the heat gradually penetrates into the thicker middle layer and the outermost annular medium wall 1, which can ensure the aerosol release amount in the middle and last few puffs of suction. In addition, during the suction process, the aerosol generated by the medium on the hole surface away from the airway hole 100a is gradually released through the micropores, which can improve the uniformity and utilization rate of the medium during the heating process and maximize the consistency of aerosol release from puff to puff.

[0138] The cooling materials used in the cooling section 220 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.

[0139] The filter material used in the filter section 210 includes but is not limited to one or more combinations of PE (polyethylene), PLA (Polylactic Acid), PBAT (Polybutylene Adipate Terephthalate), PP (Polypropylene), acetate fiber, acrylic fiber, polyethylene terephthalate (PET) and the like.

[0140] The materials of the cooling section 220 and the filtering section 210 may be the same or different.

[0141] In one embodiment, the aerosol generating substrate 100 includes a plant material, an auxiliary material, a smoke generating agent material, a binder material, and a flavor material.

[0142] The plant raw material is used to generate aerosol when heated. The auxiliary raw material is used to provide a skeleton support for the plant raw material. The smoke-generating agent raw material is used to generate a large amount of smoke when heated. The adhesive raw material is used to bond the component raw materials. The fragrance raw material is used to provide a characteristic aroma. In this way, the plant raw material and the smoke-generating agent raw material can ensure the amount of aerosol generated, while the fragrance raw material can enhance the release of the aroma during the suction process and enhance the user experience. The auxiliary raw material can not only improve the fluidity of the mixed material, but also make the aerosol generating matrix 100 porous to facilitate the extraction and flow of the aerosol. The adhesive raw material ensures that the plant raw material powder and the auxiliary agent constitute a stable mixture to avoid a loose structure.

[0143] 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.

[0144] 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 generating matrix 100, thereby increasing the aerosol release rate.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] 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 generating matrix 100 and is harmless to the human body.

[0149] 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.

[0150] 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.

[0151] 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: A plurality of annular dielectric walls, wherein the plurality of annular dielectric walls are arranged at intervals in the radial direction, a distance between two adjacent annular dielectric walls in the radial direction is a spacing, and at least two annular dielectric walls have different thicknesses and / or at least two spacings are different; A plurality of radiation medium walls, each of which connects two adjacent annular medium walls, and the two adjacent annular medium walls and the two adjacent radiation medium walls jointly define an airway hole.

2. The aerosol-generating substrate according to claim 1, characterized in that The thicknesses of the plurality of annular medium walls increase or decrease one by one from the inside to the outside in the radial direction.

3. The aerosol-generating substrate according to claim 1, characterized in that The annular dielectric wall located at the radially innermost layer is the first annular dielectric wall, and each of the annular dielectric walls located radially outside the first annular dielectric wall is a second annular dielectric wall. The thickness of at least one of all the second annular dielectric walls is greater than the thickness of the first annular dielectric wall, and the thickness of at least one of all the second annular dielectric walls is less than the thickness of the first annular dielectric wall.

4. The aerosol-generating substrate according to claim 1, characterized in that The plurality of intervals increase or decrease one by one from the inside to the outside in the radial direction.

5. The aerosol-generating substrate according to claim 1, characterized in that The spacing located at the radially innermost layer is the first spacing, and each of the spacings located radially outside the first spacing is the second spacing. At least one of all the second spacings is greater than the first spacing, and at least one of all the second spacings is less than the first spacing.

6. The aerosol-generating substrate according to claim 1, characterized in that The aerosol generating substrate is an integral structure formed by extrusion and has micropores.

7. The aerosol-generating substrate according to claim 1, characterized in that At least one of the annular medium walls is formed with a notch.

8. The aerosol-generating substrate according to claim 7, characterized in that A single annular medium wall forms a plurality of notches, and the plurality of notches are arranged at intervals along the circumferential direction.

9. The aerosol-generating substrate according to claim 1, characterized in that The aerosol generating substrate comprises mass-enhancing ribs, and at least one of the annular medium walls is provided with the mass-enhancing ribs, and the mass-enhancing ribs protrude from at least one side of the annular medium wall where the mass-enhancing ribs are located in the radial direction.

10. The aerosol-generating substrate according to claim 9, characterized in that The plurality of mass-enhancing ribs of a single annular medium wall are arranged at intervals along the circumferential direction.

11. The aerosol-generating substrate according to claim 1, characterized in that The aerosol generating matrix comprises a plurality of protruding medium walls, which are circumferentially spaced apart on the outer peripheral surface of the outermost annular medium wall, and two adjacent protruding medium walls and the outer peripheral surface of the outermost annular medium wall jointly define an air outlet groove.

12. The aerosol-generating substrate according to claim 11, characterized in that Taking a plane perpendicular to the longitudinal direction as a cross section, the cross section of the airway groove is semicircular, trapezoidal, V-shaped or U-shaped.

13. The aerosol-generating substrate of claim 1, wherein: Taking a plane perpendicular to the longitudinal direction as a cross section, the cross section of the airway hole is fan-shaped, a partial ring-shaped, polygonal or quasi-polygonal.

14. The aerosol-generating substrate of claim 1, wherein The plurality of airway holes defined by two adjacent annular medium walls are evenly or unevenly distributed in the circumferential direction.

15. The aerosol-generating substrate of claim 1, wherein Taking the plane perpendicular to the longitudinal direction as the projection plane, the projection of the aerosol generating substrate is an axisymmetric figure or a centrally symmetrical figure.

16. The aerosol-generating substrate of claim 1, wherein: Taking a plane perpendicular to the longitudinal direction as a cross section, the length of any side of the cross section of the airway hole is between 0.05 mm and 6 mm.

17. The aerosol-generating substrate of claim 1, wherein: Taking a plane perpendicular to the longitudinal direction as a cross section, the hydraulic diameter of the annular medium wall located at the outermost layer in the radial direction is 4 mm to 10 mm.

18. The aerosol-generating substrate of claim 1, wherein: The thickness of the annular medium wall is 0.05 mm to 2 mm.

19. The aerosol-generating substrate of claim 1, wherein: The thickness of the radiation medium wall is 0.05 mm to 1 mm; the absolute value of the difference in thickness between any two of the annular medium walls is 0.01 mm to 0.5 mm.

20. An aerosol generating article, characterized in that It comprises a functional segment, a wrapping layer and the aerosol generating substrate according to any one of claims 1 to 19, wherein the functional segment is arranged at one end of the aerosol generating substrate in the longitudinal direction, and the wrapping layer wraps around the periphery of the functional segment and the periphery of the aerosol generating substrate.

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