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 is provided with a transverse air channel extending in the transverse direction and a longitudinal air channel extending in the longitudinal direction, and the longitudinal air channel penetrates through at least one end face of the aerosol generation substrate in the longitudinal direction; at least one end of the transverse air passage penetrates through the circumferential surface of the aerosol-generating substrate to form an air inlet. According to the aerosol generating substrate and the aerosol generating product provided by the invention, the extraction efficiency of aerosol can be 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 present application as presented. 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] The aerosol generating substrate is heated to release aerosol, and the aerosol generating substrate in the related art has low aerosol extraction efficiency. 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 extraction efficiency of aerosols.

[0006] To achieve the above-mentioned purpose, an embodiment of the present application provides, on the one hand, an aerosol generating substrate, wherein the aerosol generating substrate has a transverse air channel extending in the transverse direction and a longitudinal air channel extending in the longitudinal direction, wherein the longitudinal air channel penetrates at least one end surface of the aerosol generating substrate in the longitudinal direction, and at least one end of the transverse air channel penetrates the circumferential surface of the aerosol generating substrate to form an air inlet.

[0007] In one embodiment, the transverse air channel is spaced apart from two longitudinal end surfaces of the aerosol generating substrate, and each of the transverse air channels is connected to at least one of the longitudinal air channels.

[0008] In one embodiment, the distance between the air inlet and the end surface of the aerosol generating substrate close to the functional section in the longitudinal direction is not greater than two-thirds of the length of the aerosol generating substrate in the longitudinal direction.

[0009] In one embodiment, the hydraulic diameter of the transverse air channel is 0.1 mm to 0.7 mm.

[0010] In one embodiment, there are multiple transverse airways, and the multiple transverse airways are arranged at intervals along the circumferential direction to form an airway group.

[0011] In one embodiment, the number of the airway groups is 1 to 7; and / or,

[0012] The number of transverse airways in each of the airway groups is 2 to 16.

[0013] In one embodiment, there are multiple airway groups, and the multiple airway groups are arranged at intervals in the longitudinal direction, and the distance between two adjacent airway groups is not less than 0.5 mm.

[0014] In one embodiment, there are multiple transverse air passages, and the multiple transverse air passages are arranged at intervals along the longitudinal direction.

[0015] Another aspect of the present application provides an aerosol generating product, comprising:

[0016] The aerosol-generating substrate of any one of the above embodiments;

[0017] The functional section is arranged at one end of the aerosol generating substrate along the longitudinal direction, and the functional section includes a filtering section.

[0018] In one embodiment, the aerosol generating product includes a wrapping layer, and the outer peripheral surface of the aerosol generating substrate and the outer peripheral surface of the functional segment are both wrapped with the wrapping layer, and the wrapping layer has pores formed at the position corresponding to the aerosol generating substrate, and the pores are connected to the air inlet accordingly.

[0019] In one embodiment, the filter segment and the aerosol generating substrate are spaced apart in the longitudinal direction, and the space defined by the wrapping layer between the filter segment and the aerosol generating substrate is a cavity.

[0020] In one embodiment, the functional section includes a temperature-resistant section, which is located in the cavity and occupies a portion of the space of the cavity, and one of the filter section and the aerosol generating substrate is in contact with the temperature-resistant section.

[0021] In one embodiment, the functional section includes a temperature-resistant section having a hollow channel, wherein the hollow channel runs through two longitudinal end surfaces of the temperature-resistant section, the temperature-resistant section is located between the filter section and the aerosol generating matrix, and both ends of the temperature-resistant section are in contact with the filter section and the aerosol generating matrix respectively.

[0022] In one embodiment, the functional section includes a temperature reduction section, and the temperature reduction section and the temperature resistant section are both located between the aerosol generating substrate and the filtering section, and the temperature reduction section is located at one end of the temperature resistant section away from the aerosol generating substrate.

[0023] In one embodiment, the aerosol generating article comprises a blocking member, and the blocking member is arranged on an end surface of the aerosol generating substrate away from the functional section in the longitudinal direction.

[0024] In one embodiment, the aerosol generating substrate and the functional segment are both cylindrical, wherein the longitudinal direction is the axial direction of the functional segment and the aerosol generating article or a direction parallel to the axial direction, and the longitudinal direction and the transverse direction are perpendicular to each other.

[0025] The embodiment of the present application provides an aerosol generating matrix and an aerosol generating product. By forming a longitudinal airway in the aerosol generating matrix, the longitudinal airway runs through at least one end face of the aerosol generating matrix in the longitudinal direction. In this way, the aerosol in the longitudinal airway is not only conducive to the orderly extraction and delivery of the aerosol under the action of the suction negative pressure, but also can reduce the suction resistance of the user's suction and improve the user experience. By forming a transverse airway in the aerosol generating matrix, it is not only conducive to the airflow to diffuse in the aerosol generating matrix in the transverse direction, thereby improving the uniformity of the aerosol extraction and good taste consistency; the transverse airway can also increase the specific surface area of ​​the aerosol generating matrix, which is conducive to heat transfer, improve heating efficiency, and improve the extraction efficiency of the aerosol. By forming an air inlet on the circumferential surface of the aerosol generating matrix, the external airflow such as air can enter the transverse airway through the air inlet for diffusion to extract the aerosol. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of an aerosol generating article according to a first embodiment of the present application;

[0027] Figure 2 for Figure 1 a cross-sectional view of the aerosol-generating article shown;

[0028] Figure 3 is a schematic cross-sectional view of an aerosol generating article in a second embodiment of the present application;

[0029] Figure 4 is a schematic cross-sectional view of an aerosol generating article in a third embodiment of the present application;

[0030] Figure 5 is a schematic cross-sectional view of an aerosol generating article in a fourth embodiment of the present application;

[0031] Figure 6 is a schematic cross-sectional view of an aerosol generating article in a fifth embodiment of the present application;

[0032] Figure 7 is a schematic cross-sectional view of an aerosol generating article in a sixth embodiment of the present application;

[0033] Figure 8 It is a schematic cross-sectional view of the aerosol generating article in the seventh embodiment of the present application.

[0034] Description of Reference Numerals

[0035] Aerosol generating product 100; aerosol generating matrix 1; transverse airway 1a; longitudinal airway 1b; air inlet 1c; functional section 2; filtering section 21; temperature-resistant section 22; hollow channel 22a; substrate 221; metal coating 222; cooling section 23; central channel 23a; wrapping layer 3; pores 3a; cavity 3b; blocking member 4. DETAILED DESCRIPTION

[0036] 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.

[0037] In this application, "a plurality" includes two and more than two. The unit "mm" is millimeter. The unit "mm 2 ” is square millimeters.

[0038] On the one hand, the present application embodiment provides an aerosol generating matrix, see Figures 1 to 8 The aerosol generating substrate 1 has a transverse air channel 1 a extending in the transverse direction and a longitudinal air channel 1 b extending in the longitudinal direction. The longitudinal air channel 1 b penetrates at least one end surface of the aerosol generating substrate 1 in the longitudinal direction.

[0039] At least one end of the transverse air passage 1 a penetrates the circumferential surface of the aerosol generating substrate 1 to form an air inlet 1 c.

[0040] The embodiment of the present application provides an aerosol generating matrix 1. By forming a longitudinal airway 1b in the aerosol generating matrix 1, the longitudinal airway 1b runs through at least one end face of the aerosol generating matrix 1 in the longitudinal direction. In this way, the aerosol in the longitudinal airway 1b is not only conducive to orderly extraction and delivery of the aerosol under the action of the suction negative pressure, but also can reduce the suction resistance of the user's suction and improve the user experience. By forming a transverse airway 1a in the aerosol generating matrix 1, it is not only conducive to the airflow to diffuse in the aerosol generating matrix 1 in the transverse direction, thereby improving the uniformity of aerosol extraction and good taste consistency; the transverse airway 1a can also increase the specific surface area of ​​the aerosol generating matrix 1, which is conducive to heat transfer, improves heating efficiency, and improves the extraction efficiency of aerosol. By forming an air inlet 1c on the circumferential surface of the aerosol generating matrix 1, the external airflow such as air can enter the transverse airway 1a through the air inlet 1c for diffusion to extract the aerosol.

[0041] In some embodiments, the longitudinal air passage 1b may be a linear air passage. Figure 1 The middle longitudinal air passage 1b is taken as a straight line parallel to the axial direction, and in other embodiments, a straight air passage inclined relative to the axial direction may also be used.

[0042] In some embodiments, the longitudinal airway 1b is a curved airway, such as a spiral airway. At least part of the hole section of the curved airway is a curved shape with a non-zero curvature. The curved airway can greatly increase the flow path of the airflow without significantly increasing the length of the aerosol generating substrate 1, and can extend the contact time between the airflow and the hole wall of the curved airway, thereby improving the aerosol extraction rate.

[0043] In one embodiment, the curved airway is in the shape of a spiral line. That is, the three-dimensional shape of the curved airway is in the shape of a spatial spiral line. The line connecting any point of the spiral curved airway and the starting point has an inclination angle relative to its axis. The spiral curved airway can greatly extend the flow path of the airflow, precipitate the aerosol from the aerosol generating matrix 1 into the curved airway, increase the flow speed of the aerosol in the aerosol generating matrix 1, 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 suction experience.

[0044] It should be noted that, in the embodiment of the present application, the aerosol generating substrate 1 is used to generate aerosol by heating. Exemplarily, the aerosol generating substrate 1 can be used to generate aerosol by heating without burning. That is, the aerosol generating substrate 1 is heated below the ignition point to generate aerosol. The aerosol generating substrate 1 does not burn during the process of generating aerosol. In some application scenarios, the aerosol generating substrate 1 can be used to generate aerosol by ignition. The aerosol generating substrate 1 of the present application is more used to generate aerosol by heating without burning.

[0045] It should be noted that the inhalation resistance is positively correlated with the flow resistance of the aerosol. The smaller the flow resistance of the aerosol in the aerosol generating matrix 1, the smaller the inhalation resistance experienced by the user. The greater the flow resistance of the aerosol in the aerosol generating matrix 1, the greater the inhalation resistance experienced by the user.

[0046] It should be noted that the longitudinal direction refers to the extension direction of the aerosol generating substrate 1. For example, the aerosol generating substrate 1 is formed by extrusion, and the longitudinal direction is the extrusion direction of the aerosol generating substrate 1. The transverse direction intersects the longitudinal direction. Exemplarily, the transverse direction may be perpendicular to the longitudinal direction or the transverse direction may be inclined relative to the longitudinal direction (i.e., the angle between the transverse direction and the longitudinal direction is not equal to 90°).

[0047] Exemplary, exemplary, see Figures 2 to 8 The number of longitudinal airways 1b is not limited and can be one or more.

[0048] The longitudinal air channel 1b penetrates at least one end surface of the aerosol generating substrate 1 along the longitudinal direction, which means that the longitudinal air channel 1b can be penetrated by the opposite ends of the aerosol generating substrate 1 along the longitudinal direction, and the airflow can flow from one end of the aerosol generating substrate 1 along the longitudinal direction through the longitudinal air channel 1b to the other end of the aerosol generating substrate 1 along the longitudinal direction.

[0049] Of course, one end of the longitudinal air channel 1b may penetrate the end surface of the aerosol generating substrate 1 in the longitudinal direction, and the other end of the longitudinal air channel 1b may be a blind end. Among them, each longitudinal air channel 1b may penetrate the same end of the aerosol generating substrate 1 in the longitudinal direction. In other embodiments, part of the longitudinal air channel 1b may penetrate one end of the aerosol generating substrate 1 in the longitudinal direction, and another part of the longitudinal air channel 1b may penetrate the other end of the aerosol generating substrate 1 in the longitudinal direction.

[0050] It can be understood that, compared with the longitudinal air passage 1b penetrating one end of the aerosol generating substrate 1 along the longitudinal direction, the longitudinal air passage 1b penetrating both ends of the aerosol generating substrate 1 along the longitudinal direction is more conducive to reducing the user's inhalation resistance.

[0051] In one embodiment, the transverse air channel 1a is spaced from the two longitudinal end surfaces of the aerosol generating substrate 1. That is, the transverse air channel 1a does not contact the two longitudinal end surfaces of the aerosol generating substrate 1, in other words, the transverse air channel 1a does not extend to the two longitudinal end surfaces of the aerosol generating substrate 1.

[0052] Each transverse air channel 1a is connected to at least one longitudinal air channel 1b. Thus, by connecting to the transverse air channel 1a, the extraction flow path can be extended, and the uniformity of aerosol extraction is better.

[0053] In one embodiment, please refer to Figure 2 , the distance between the air inlet 1c and the end face of the aerosol generating substrate 1 close to the functional section 2 in the longitudinal direction is not greater than two-thirds of the length of the aerosol generating substrate 1 in the longitudinal direction. Exemplarily, the distance between the air inlet 1c and the end face of the aerosol generating substrate 1 close to the functional section 2 in the longitudinal direction can be two-thirds, one-half or one-third of the length of the aerosol generating substrate 1 in the longitudinal direction. In this way, by setting a suitable distance, not only can the influence of the external airflow entering from the air inlet 1c on the heating temperature of the aerosol generating substrate 1 be reduced, but also the aerosol generating substrate 1 is conducive to generating aerosol, which is convenient for the external airflow to be extracted.

[0054] It can be understood that the aerosol generated by the aerosol generating substrate 1 generally flows longitudinally from the direction away from the functional segment 2 toward the direction close to the functional segment 2. In terms of the flow direction of the aerosol, the end face of the aerosol generating substrate 1 away from the functional segment 2 is the upstream end, and the end face of the aerosol generating substrate 1 close to the functional segment 2 is the downstream end.

[0055] In one embodiment, the hydraulic diameter of the transverse air channel 1a is 0.1 mm to 0.7 mm. Exemplarily, the hydraulic diameter of the transverse air channel 1a can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm or 0.7 mm, etc. In this way, by setting the hydraulic diameter of the transverse air channel 1a of a suitable size, the flow velocity of the external airflow can be increased to diffuse in the aerosol generating matrix 1, thereby improving the extraction rate of the external airflow to the aerosol, and improving the utilization rate and overall uniformity of the aerosol by the user during use.

[0056] It should be noted that the hydraulic diameter refers to the ratio of four times the flow cross-sectional area to the perimeter. The flow cross-section refers to the cross-section taken by the streamline cluster perpendicular to the fluid. For example, if the flow cross-sectional shape of the transverse airway 1a is a regular quadrilateral, then the hydraulic diameter is the ratio of four times the flow cross-sectional area of ​​the regular quadrilateral transverse airway 1a to the perimeter of the regular quadrilateral. For another example, if the flow cross-sectional shape of the transverse airway 1a is circular, the hydraulic diameter is the diameter of the circular transverse airway 1a.

[0057] In one embodiment, please refer to Figures 2 to 8 The number of transverse air channels 1a is multiple, and multiple transverse air channels 1a are arranged at intervals along the circumferential direction to form an air channel group. On the one hand, the specific surface area of ​​the aerosol generating matrix 1 can be further increased, which is convenient for heat transfer and improves heating efficiency to increase the aerosol generation rate; on the other hand, by setting multiple transverse air channels 1a, the diffusion efficiency of the external airflow in the aerosol generating matrix 1 can be further improved, so that the aerosol extraction uniformity is better and the user's inhalation experience is good.

[0058] In one embodiment, the number of airway groups is 1 to 7. Exemplarily, the number of airway groups can be 1, 2, 3, 4, 5, 6 or 7, etc. In this way, by setting a suitable number of airway groups, the diffusion efficiency of the external airflow in the aerosol generating matrix 1 can be further improved, and the uniformity of extraction is good.

[0059] In one embodiment, the number of transverse airways 1a in each airway group is 2 to 16. Exemplarily, the number of transverse airways 1a in each airway group can be 2, 5, 7, 9, 11, 13 or 16, etc., and each transverse airway 1a has an air inlet 1c correspondingly arranged thereto, so that the diffusion efficiency of the external airflow in the aerosol generating matrix 1 can be improved, and the extraction and uniformity of the aerosol can be improved.

[0060] In one embodiment, there are multiple airway groups, and the multiple airway groups are arranged at intervals in the longitudinal direction, and the distance between two adjacent airway groups is not less than 0.5 mm. Exemplarily, the distance between two adjacent airway groups can be 0.5 mm, 0.6 mm, 0.7 mm, 0.9 mm or 1 mm, etc. In this way, by setting a suitable spacing, the external airflow can be evenly diffused in the aerosol generating matrix 1, so that the aerosol extraction uniformity is better and the user's inhalation experience is good.

[0061] In one embodiment, there are multiple transverse air passages 1a, which are arranged at intervals in the longitudinal direction, so that the external airflow can be evenly diffused in the longitudinal direction, so that the aerosol extraction is uniform.

[0062] Another aspect of the present application provides an aerosol generating product. Figures 2 to 8 The aerosol generating article 100 comprises a functional segment 2 and an aerosol generating substrate 1 in any one of the above embodiments. The functional segment 2 is disposed at one end of the aerosol generating substrate 1 in the longitudinal direction. For example, the functional segment 2 can be disposed at the downstream end of the aerosol generating substrate 1 in the longitudinal direction. In this way, the aerosol generated by the aerosol generating substrate 1 can be transported to the functional segment 2 under the action of the suction negative pressure.

[0063] Functional segment 2 includes filter segment 21. Exemplarily, filter segment 21 can block substances of target particle size and can also adjust the inhalation resistance. For example, filter segment 21 can filter large-size particles similar to powdery substances. The aerosol filtered by filter segment 21 has a higher consistency in particle size and a more delicate taste.

[0064] In one embodiment, please refer to Figures 1 to 8 The aerosol generating product 100 includes a wrapping layer 3, and the outer peripheral surface of the aerosol generating substrate 1 and the outer peripheral surface of the functional segment 2 are both wrapped with the wrapping layer 3. In this way, the wrapping layer 3 can play a certain protective role on the aerosol generating substrate 1, reduce the surface area of ​​the aerosol generating substrate 1 directly exposed to the outside, thereby reducing the probability of the aerosol generating substrate 1 being damp and deteriorated due to contact with the air, and at the same time, reducing the probability of the aerosol generating substrate 1 being contaminated by contact with other components in the aerosol generating device.

[0065] See also Figures 2 to 8 The wrapping layer 3 is formed with pores 3a at the position corresponding to the aerosol generating matrix 1, and the pores 3a are correspondingly connected to the air inlet 1c. The pores 3a are used to introduce the external airflow into the air inlet 1c, so that the external airflow can enter the air inlet 3a from the pores 3a, and then enter the transverse airway 1a and the longitudinal airway 1b to diffuse, so as to extract the aerosol.

[0066] In one embodiment, please refer to Figure 3, the filter section 21 and the aerosol generating substrate 1 are arranged at intervals in the longitudinal direction, and the space defined by the wrapping layer 3 between the filter section 21 and the aerosol generating substrate 1 is the cavity 3b. In this way, the flow cross section of the cavity 3b is large, which can provide a larger flow cross section for the circulation of the aerosol, and the aerosol can be buffered in the cavity 3b to increase the buffering amount of the aerosol, providing a sufficient aerosol source for the extraction and release of the aerosol.

[0067] In one embodiment, please refer to Figure 5 and Figure 6 , the functional section 2 includes a temperature-resistant section 22, which is located in the cavity 3b and occupies part of the space of the cavity 3b, and one of the filter section 21 and the aerosol generating matrix 1 is in contact with the temperature-resistant section 22. Exemplarily, the temperature-resistant section 22 can be made of a hollow paper tube or hollow acetate fiber. The filter section 21 can be made of solid acetate fiber. The temperature-resistant section 22 can be in contact with the filter section 21, that is, the temperature-resistant section 22 occupies part of the space of the cavity 3b near the filter section 21, so that the extracted aerosol first enters the cavity 3b, providing a sufficient aerosol source for the extraction and release of the aerosol, and then enters the temperature-resistant section 22 to withstand a certain temperature of the aerosol, so as to effectively prevent the aerosol generating product 100 from thermal collapse or deformation during inhalation, thereby improving the reliability of the aerosol generating product 100.

[0068] It should be noted that hollow paper tube refers to a tubular structure made of paper with a hollow center. Hollow acetate fiber refers to a fiber bundle with a hollow center. Acetate fiber is a structure in which fiber bundles are arranged side by side in a circumferential direction. Solid acetate fiber refers to a fiber bundle with only gaps between the fiber bundles and no hollowness.

[0069] In some embodiments, see Figure 6 The temperature-resistant section 22 can contact the aerosol generating matrix 1, and the cavity 3b is located between the temperature-resistant section 22 and the filtering section 21. That is to say, the temperature-resistant section 22 occupies part of the space of the cavity 3b close to the aerosol generating matrix 1. At this time, the extracted aerosol will first pass through the temperature-resistant section 22. Since the aerosol temperature at this time is approximately 180°C to 240°C, the aerosol will be vaporized and condensed in the temperature-resistant section 22 when passing through the temperature-resistant section 22, and then the aerosol phase will be gradually stabilized and mixed in the part of the space located in the cavity 3b close to the aerosol generating matrix 1 to ensure the consistency of subsequent inhalation.

[0070] In one embodiment, please refer to Figure 4The functional section 2 includes a heat-resistant section 22 having a hollow channel 22a, the hollow channel 22a runs through the two end faces of the heat-resistant section 22 in the longitudinal direction, the heat-resistant section 22 is located between the filter section 21 and the aerosol generating matrix 1, and the two ends of the heat-resistant section 22 are respectively in contact with the filter section 21 and the aerosol generating matrix 1. Exemplarily, the temperature resistance can withstand temperatures below 350°C, that is, the temperature resistance can still maintain the same shape at 350°C. In this way, the heat-resistant section 22 has the characteristics of high heat resistance to avoid thermal collapse, thermal deformation, and the problem of residues that may fall from the heat-resistant section 22 blocking the airway of the aerosol generating matrix 1.

[0071] Exemplarily, in one embodiment, the temperature-resistant section 22 includes a substrate 221 and a metal coating 222, wherein the substrate 221 is formed with a hollow channel 22a, and the metal coating 222 is attached to at least one surface of the substrate 221 in the transverse direction. In other words, the metal coating 222 can be coated on the inner wall of the substrate 221, or on the outer wall and the inner wall of the substrate 221.

[0072] Exemplarily, in one embodiment, the substrate 221 may be a hard hollow aluminum foil tube.

[0073] For example, in one embodiment, the metal coating 222 may be made of metal materials such as copper and / or tin.

[0074] Exemplarily, in one embodiment, the coating rate of the metal coating 222 is not less than 3%, and the hollowness of the substrate 221 is not less than 70%, so that the aerosol can be prevented from condensing inside the temperature-resistant section 22 .

[0075] It should be noted that the coating rate refers to the ratio of the amount of metal coating 222 per unit area on the inner or outer surface of the substrate 221 to the total amount of the metal coating 222 and the substrate 221. Hollowness refers to the ratio of the volume of the hollow channel 22a to the total volume of the temperature-resistant section 22.

[0076] Exemplarily, the heating temperature of the aerosol generating matrix 1 is around 300°C. When inhaling, the temperature of the end face of the aerosol generating matrix 1 close to the functional segment 2 is generally around 200°C, or even higher. When not inhaling, the temperature of the end face of the aerosol generating matrix 1 close to the functional segment 2 drops sharply, for example, the temperature is around 100°C. During inhalation, excessively high temperature can easily cause the filter segment 21 to shrink and deform due to heat, affecting the appearance and inhalation experience, causing the aerosol to "burn the mouth" and making it impossible to inhale.

[0077] In one embodiment, please refer to Figure 7The functional section 2 includes a cooling section 23. The cooling section 23 and the temperature-resistant section 22 are both located between the aerosol generating matrix 1 and the filtering section 21. The cooling section 23 is located at one end of the temperature-resistant section 22 away from the aerosol generating matrix 1. Exemplarily, the cooling section 23 can be made of a hollow paper tube or hollow acetate fiber. The temperature-resistant section 21 can be made of a hollow aluminum foil tube. The filtering section 21 can be made of solid acetate fiber. The cooling section 23 can be located at one end of the temperature-resistant section 22 away from the aerosol generating matrix 1. In this way, the aerosol generated by the aerosol generating matrix 1 flows through the temperature-resistant section 22 and the cooling section 23 in sequence under the action of the suction negative pressure, and then is transported to the filtering section 21. In this way, by providing a cooling section 23 at one end of the filter section 21 close to the temperature-resistant section 22, the inlet temperature of the aerosol can be reduced to a level acceptable to the human body, and then the filter section 21 and the like work together to further reduce the inlet temperature to a level acceptable to the human oral cavity, for example, below 45°C, thereby solving the problem of "burning the mouth" during the inhalation process.

[0078] It should be noted that the hollow aluminum foil tube refers to a tubular structure made of aluminum foil material with a hollow central area.

[0079] In one embodiment, please refer to Figure 7 The cooling section 23 is formed with a central channel 23a connected to the hollow channel 22a, and the hydraulic diameter of the central channel 23a is smaller than the hydraulic diameter of the hollow channel 22a. In this way, the area of ​​the cavity 3b can be increased, that is, the aerosol flow path is increased, and rapid cooling is achieved.

[0080] Exemplarily, in one embodiment, the hollowness of the cooling section 23 is less than 20%, which is conducive to the rapid extraction of aerosol.

[0081] For example, in one embodiment, please refer to Figure 7 The central axis of the cooling section 23 extending in the longitudinal direction passes through the central channel 23a. Further, the center line of the central channel 23a coincides with the central axis of the cooling section 23 extending in the longitudinal direction.

[0082] For example, in one embodiment, please refer to Figure 7 The central axis of the heat-resistant section 22 extending in the longitudinal direction passes through the hollow passage 22a. Further, the center line of the hollow passage 22a coincides with the central axis of the heat-resistant section 22 extending in the longitudinal direction.

[0083] The central axis refers to the symmetry line of an axisymmetric figure or a rotational figure. That is, the temperature-lowering section 23 and the central channel 23a as well as the temperature-resistant section 22 and the hollow channel 22a can all be axisymmetric figures or rotational figures.

[0084] In one embodiment, please refer to Figure 8The aerosol generating article 100 comprises a blocking member 4 , which is arranged on the end surface of the aerosol generating substrate 1 away from the functional section 2 in the longitudinal direction. On the one hand, the external airflow can be reduced or blocked from contacting the aerosol generating substrate 1 through the end face of the aerosol generating substrate 1 away from the functional section 2 in the longitudinal direction, thereby reducing the heat dilution caused by the external airflow, so that the temperature field of the heated aerosol generating substrate 1 is relatively stable and the thermal efficiency is good; on the other hand, one end of the aerosol generating substrate 1 in the longitudinal direction is blocked, so that the aerosol generating substrate 1 is heated to generate aerosol in a low-oxygen or oxygen-free environment. At this time, the generated aerosol will diffuse toward the aerobic area, that is, diffuse toward the external airflow, and finally be extracted by the external airflow. Since the aerosol generating substrate 1 has less oxygen participation in the heating process, the generation of harmful substances can be reduced, and the probability of carbonization of the aerosol generating substrate 1 can be reduced; on the other hand, by arranging a blocking member 4 on the end face of the aerosol generating substrate 1 away from the functional section 2 in the longitudinal direction, the suction resistance adjustment ability of the aerosol generating product 100 can be between 100Pa and 350Pa, for example, between 100Pa and 300Pa, so as to effectively solve the problem of the aerosol generating substrate 1 falling off after inhalation.

[0085] Exemplarily, in one embodiment, the wrapping layer 3 may be wrapped around the outer periphery of the blocking member 4 .

[0086] Exemplarily, in one embodiment, the blocking member 4 may be a paper tube or acetate fiber, etc.

[0087] Exemplarily, in one embodiment, the sealing member 4 can be solid acetate fiber or hollow acetate fiber or PET (polyethylene terephthalate) of equivalent structure, or it can contain tobacco characteristic components such as nicotine, nicotine salts and derivatives, glycerol, propylene glycol, fruity aroma, tobacco flavoring ingredients, etc., to form a tobacco material formed by one or more combinations thereof.

[0088] On the other hand, an embodiment of the present application provides an aerosol generating device, which is used for the aerosol generating article 100 in any of the above embodiments. The aerosol generating device includes a heating component, and the heating component is used to heat the aerosol generating substrate 1 to generate an aerosol.

[0089] The heating methods of the heating component include, but are not limited to, resistance heating, electromagnetic heating, infrared heating, microwave heating or laser heating. Transferring heat in the form of thermal convection means that the heating component is not in contact with the aerosol generating substrate 1, the heating component first heats the air, and then the hot air bakes and heats the aerosol generating substrate 1. Thermal conduction means that the heating component is in contact with the aerosol generating substrate 1 and conducts heat to the aerosol generating substrate 1. Exemplarily, resistance and electromagnetic heating mainly transfer heat to the aerosol generating substrate 1 in the form of thermal conduction or thermal convection. Infrared heating, microwave heating or laser heating mainly transfer heat to the aerosol generating substrate 1 in the form of thermal radiation. That is, the heating component can heat the aerosol generating substrate 1 in one or more of the three forms of thermal conduction, thermal convection and thermal radiation.

[0090] In one embodiment, please refer to Figure 7 The aerosol generating matrix 1 and the functional section 2 are both cylindrical, wherein the longitudinal direction is the axial direction of the functional section 2 and the aerosol generating matrix 1 or a direction parallel to the axial direction, and the longitudinal direction and the transverse direction are perpendicular to each other. In other words, the filtering section 21, the cooling section 23, the temperature-resistant section 22 and the aerosol generating matrix 1 are all cylindrical.

[0091] The axial direction of the cylindrical functional segment 2 and the aerosol-generating substrate 1 refers to the direction of the central axis of the cylinder.

[0092] For some examples, see Figure 7 , taking the plane perpendicular to the longitudinal direction as the projection plane, the projection of the filtering section 21, the projection of the cooling section 23, the projection of the temperature-resistant section 22 and the projection of the aerosol generating matrix 1 all overlap.

[0093] For example, in one embodiment, please refer to Figure 7 The projection of the filtering section 21, the projection of the cooling section 23, the projection of the temperature-resistant section 22 and the projection of the aerosol generating matrix 1 are all circular and have the same outer diameter. This facilitates the assembly of the above structure into the wrapping layer 3.

[0094] In one embodiment, the aerosol generating substrate 1 is an integral structure.

[0095] For example, the aerosol generating matrix 1 can be made into an integral structure by injection molding, die casting or extrusion, etc. In this way, the aerosol generating matrix 1 is an integral medium during use, such as when heated or after heating, and is not prone to disintegration and falling.

[0096] 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 toward the discharge port by the extrusion screw, and is formed into an aerosol-generating matrix 1 with a preset projection shape and corresponding pores through an extrusion mold such as a mouth mold.

[0097] It should be noted that micropores may exist inside the aerosol generating matrix 1. For example, for the aerosol generating matrix 1 of the particle combination, the gaps between the particles constitute micropores. However, the airway described in the present application is different from the micropores. The airway described in the present application belongs to the pores in the macroscopic sense, and the micropores belong to the pores in the microscopic sense. The projected area and length of the airway are much larger than those of the micropores. The airway is mainly formed by design and processing, for example, by die processing. Therefore, the projected area and length of the airway can be changed according to the design requirements, while the size of the micropore is determined by the gaps between the particles. For example, the material is a granular material, and the aerosol generating matrix 1 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.

[0098] The cooling material used in the cooling section 23 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 and the like.

[0099] The filter material used in the filter section 21 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, etc. In this way, not only harmful components in the aerosol can be filtered out, but also the suction resistance adjustment of 100Pa to 350Pa can be achieved.

[0100] The materials of the cooling section 23 and the filtering section 21 may be the same or different.

[0101] In one embodiment, the aerosol generating substrate 1 includes plant raw materials, auxiliary raw materials, smoke generating agent raw materials, adhesive raw materials and flavor raw materials.

[0102] 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 1 porous, so as 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.

[0103] 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.

[0104] 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 1, thereby increasing the aerosol release rate.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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 1 and is harmless to the human body.

[0109] 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.

[0110] The following schematically shows a specific embodiment, which is described in detail as follows:

[0111] In the first specific embodiment, please refer to Figure 2The structure of the aerosol generating product 100 is a two-stage structure, which is an aerosol generating matrix 1 and a filter section 21 in sequence. The aerosol generating matrix 1 is in contact with the filter section 21. The filter section 21 is made of solid acetate fiber. The aerosol generating matrix 1 has a transverse airway 1a extending in the transverse direction and a longitudinal airway 1b extending in the longitudinal direction. The longitudinal airway 1b penetrates the two longitudinal end faces of the aerosol generating matrix 1. Each transverse airway 1a is connected to at least one longitudinal airway 1b. The transverse airway 1a is isolated from the two longitudinal end faces of the aerosol generating matrix 1. At least one end of the transverse airway 1a penetrates the circumferential surface of the aerosol generating matrix 1 to form an air inlet 1c. The distance between the air inlet 1c and the end face of the aerosol generating matrix 1 close to the functional section 2 in the longitudinal direction is two-thirds of the length of the aerosol generating matrix 1 in the longitudinal direction. In this way, the filtering of harmful substances by the aerosol and the adjustment of the suction resistance can be achieved, and the suction resistance capacity brought by it is between 100Pa and 450Pa. The outer peripheral surface of the aerosol generating matrix 1 and the outer peripheral surface of the filter section 21 are both wrapped with a wrapping layer 3, and the wrapping layer 3 is formed with pores 3a at the position corresponding to the aerosol generating matrix 1, and the pores 3a are correspondingly connected to the air inlet 1c. The hydraulic diameter of the transverse air channel 1a is 0.1mm to 0.7mm. The number of air channel groups is 1 to 7. The distance between two adjacent air channel groups is not less than 0.5mm. The number of transverse air channels 1a in each air channel group is 2 to 16. The outer diameter of the aerosol generating matrix 1 is equal to the outer diameter of the filter section 21, so that it can be formed by only one step of conforming or twisting, and the process is simple and efficient.

[0112] It is understandable that the filter segment 21 in this embodiment may also be made of hollow acetate fiber or PET with an equivalent structure.

[0113] by Figure 2 For example, the aerosol generating product of the invention has micropores inside the aerosol generating matrix 1a, and the micropores are at least partially connected to each other and connected to the transverse airway 1a and the longitudinal airway 1b. When the aerosol generating matrix 1 is heated, external airflow such as air can enter the transverse airway 1a through the air inlet 1c for diffusion, and the aerosol generated by the medium of the aerosol generating matrix 1 surrounding the transverse airway 1a (i.e., the part of the aerosol generating matrix 1 exposed to the transverse airway) directly enters the transverse airway 1a, and the aerosol generated by the medium of the aerosol generating matrix 1 surrounding the longitudinal airway 1b (i.e., the part of the aerosol generating matrix 1 exposed to the longitudinal airway) directly enters the longitudinal airway 1b, and the aerosol generated by other parts of the aerosol generating matrix 1 (i.e., the part of the aerosol generating matrix not exposed to the transverse airway and the longitudinal airway) can be collected into the transverse airway 1a and / or the longitudinal airway 1b through the micropores. Thus, during the inhalation process, the airflow gathered in the transverse airway 1a further converges into the longitudinal airway 1b and flows through the longitudinal airway 1b to the functional section 2, that is, the aerosol from the aerosol generating matrix 1 is filtered through the filter section 21 and then enters the user's mouth.

[0114] In the second specific embodiment, please refer to Figure 3 The second specific embodiment differs from the first specific embodiment in that the filter segment 21 and the aerosol generating substrate 1 are arranged at intervals in the longitudinal direction, and the space defined by the wrapping layer 3 between the filter segment 21 and the aerosol generating substrate 1 is a cavity 3b. The filter segment 21 is made of solid acetate fiber. In this way, a larger flow cross section can be provided for the circulation of aerosol, and the aerosol can be buffered in the cavity 3b to increase the buffering amount of the aerosol, providing a sufficient aerosol source for the extraction and release of the aerosol.

[0115] In the third specific embodiment, please refer to Figure 4 The difference between the third specific embodiment and the second specific embodiment is that the functional section 2 includes a heat-resistant section 22 having a hollow channel 22a, forming a three-section structure, and the filter section 21, the heat-resistant section 22 and the aerosol generating matrix 1 are contacted in sequence. The filter section 21 is made of solid acetate fiber. The substrate 221 is formed with a hollow channel 22a, and a metal coating 222 is attached to at least one surface of the substrate 221 along the transverse direction. The substrate 221 is a hard hollow aluminum foil tube. In this way, the aerosol can withstand a temperature not higher than 350°C to avoid thermal collapse, thermal deformation, and residues that may fall from the heat-resistant section 22 blocking the airway of the aerosol generating matrix 1. The coating rate of the metal coating 222 is not less than 3%, and the hollowness of the substrate 221 is not less than 70%. In this way, the aerosol can be reduced or prevented from condensing inside the heat-resistant section 22.

[0116] It is understandable that the filter segment 21 in this embodiment may also be made of hollow acetate fiber or PET of equivalent structure, etc., so that the aerosol filtration of harmful substances and the adjustment of suction resistance can be achieved, and the suction resistance capacity brought by it is between 100Pa and 350Pa.

[0117] In the fourth specific embodiment, please refer to Figure 5 The fourth specific embodiment differs from the third specific embodiment in that the hydraulic diameter of the heat-resistant section 22 of the fourth specific embodiment is smaller than that of the heat-resistant section 22 of the third specific embodiment. The heat-resistant section 22 contacts the filter section 21, the filter section 21 is made of solid acetate fiber, the heat-resistant section 22 is made of a hollow aluminum foil tube with a hollow channel 22a, and the heat-resistant section 22 is spaced apart from the aerosol generating substrate 1 to form a cavity 3b, that is, the heat-resistant section 22 occupies part of the space of the cavity 3b near the filter section 12, so that the extracted aerosol first enters the cavity 3b, providing a sufficient aerosol source for the extraction and release of the aerosol and then caching the aerosol, and then enters the heat-resistant section 22 to withstand a certain temperature of the aerosol, so as to effectively prevent the aerosol generating product 100 from thermal collapse or deformation during inhalation, thereby improving the reliability of the aerosol generating product 100.

[0118] In the fifth specific embodiment, please refer to Figure 6 The difference between the fifth specific embodiment and the fourth specific embodiment is that the heat-resistant section 22 is in contact with the aerosol generating matrix 1, the filter section 21 adopts solid acetate fiber, the heat-resistant section 22 adopts a hollow aluminum foil tube with a hollow channel 22a, and the cavity 3b is located between the heat-resistant section 22 and the filter section 21, that is, the heat-resistant section 22 occupies part of the space of the cavity 3b close to the aerosol generating matrix 1. At this time, the extracted aerosol will first pass through the heat-resistant section 22. Since the aerosol temperature at this time is approximately 180°C to 240°C, the aerosol will be vaporized and condensed in the heat-resistant section 22 when passing through the heat-resistant section 22, and then the aerosol phase will be gradually stabilized and mixed in the part of the space located in the cavity 3b close to the aerosol generating matrix 1 to ensure the consistency of subsequent suction.

[0119] In the sixth specific embodiment, please refer to Figure 7 The difference between the sixth specific embodiment and the third specific embodiment is that the functional section 2 includes a cooling section 23, forming a four-section structure, and the filter section 21, the cooling section 23, the temperature-resistant section 22 and the aerosol generating matrix 1 are in contact in sequence. The cooling section 23 and the temperature-resistant section 22 are both located between the aerosol generating matrix 1 and the filter section 21. The cooling section 23 uses a hollow acetate fiber with a central channel 23a, the temperature-resistant section 22 uses a hollow aluminum foil tube with a hollow channel 22a, and the filter section 21 uses solid acetate fiber. The cooling section 23 is located at one end of the temperature-resistant section 22 away from the aerosol generating matrix 1. In this way, by arranging the cooling section 23 at one end of the filter section 21 close to the temperature-resistant section 22, the inlet temperature of the aerosol can be reduced to a level acceptable to the human body, and then the filter section 21 and the like work together to further reduce the inlet temperature to a level acceptable to the human oral cavity, thereby solving the problem of "hot mouth" during the suction process.

[0120] In the seventh specific embodiment, please refer to Figure 8 The seventh specific embodiment differs from the third specific embodiment in that: the aerosol generating product 100 includes a plugging member 4, which is arranged on the end face of the aerosol generating matrix 1 away from the functional section 2 in the longitudinal direction, and the plugging member 4, the aerosol generating matrix 1, the heat-resistant section 22 and the end of the filter section 21 are in contact in sequence. The filter section 21 is made of solid acetate fiber, the heat-resistant section 22 is made of a hollow aluminum foil tube with a hollow channel 22a, and the plugging member 4 is made of solid acetate fiber with strands arranged side by side. In this way, the suction resistance adjustment capability brought by it is 100Pa to 300Pa, which effectively solves the problem of the aerosol generating matrix 1 falling off after inhalation.

[0121] It is understandable that the sealing member 4 in this embodiment may also be made of hollow acetate fiber or PET (polyethylene terephthalate) of equivalent structure, and may also contain tobacco characteristic components such as nicotine, nicotine salts and derivatives, glycerol, propylene glycol, fruity aroma, tobacco flavoring ingredients, etc., to form a tobacco material formed by one or more combinations thereof.

[0122] 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.

[0123] 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 The aerosol generating substrate has a transverse air channel extending in the transverse direction and a longitudinal air channel extending in the longitudinal direction, wherein the longitudinal air channel penetrates at least one end surface of the aerosol generating substrate in the longitudinal direction, and at least one end of the transverse air channel penetrates the circumferential surface of the aerosol generating substrate to form an air inlet.

2. The aerosol-generating substrate according to claim 1, characterized in that The transverse air channel is spaced apart from two longitudinal end surfaces of the aerosol generating substrate, and each of the transverse air channels is communicated with at least one of the longitudinal air channels.

3. The aerosol-generating substrate according to claim 1, characterized in that The distance between the air inlet and the end surface of the aerosol generating substrate close to the functional section in the longitudinal direction is not greater than two-thirds of the length of the aerosol generating substrate in the longitudinal direction.

4. The aerosol-generating substrate according to claim 1, characterized in that The hydraulic diameter of the transverse air channel is 0.1 mm to 0.7 mm.

5. The aerosol-generating substrate according to claim 1, characterized in that There are multiple transverse airways, and the multiple transverse airways are arranged at intervals along the circumferential direction to form an airway group.

6. The aerosol-generating substrate according to claim 5, characterized in that The number of the airway groups is 1 to 7; and / or, The number of transverse airways in each of the airway groups is 2 to 16.

7. The aerosol-generating substrate according to claim 5, characterized in that There are multiple airway groups, and the multiple airway groups are arranged at intervals in the longitudinal direction, and the distance between two adjacent airway groups is not less than 0.5 mm.

8. The aerosol-generating substrate according to claim 1, characterized in that There are multiple transverse airways, and the multiple transverse airways are arranged at intervals in the longitudinal direction.

9. An aerosol generating product, characterized in that include: An aerosol-generating substrate as claimed in any one of claims 1 to 8; The functional section is arranged at one end of the aerosol generating substrate along the longitudinal direction, and the functional section includes a filtering section.

10. An aerosol-generating article according to claim 9, characterized in that The aerosol generating product comprises a wrapping layer, the outer peripheral surface of the aerosol generating substrate and the outer peripheral surface of the functional segment are both wrapped with the wrapping layer, the wrapping layer is formed with pores at the position corresponding to the aerosol generating substrate, and the pores are correspondingly connected to the air inlet.

11. An aerosol-generating article according to claim 10, characterized in that The filter segment and the aerosol generating substrate are arranged with a spacing in the longitudinal direction, and the space defined by the wrapping layer between the filter segment and the aerosol generating substrate is a cavity.

12. An aerosol-generating article according to claim 11, characterized in that The functional section includes a temperature-resistant section, which is located in the cavity and occupies a portion of the space of the cavity, and one of the filter section and the aerosol generating substrate is in contact with the temperature-resistant section.

13. The aerosol-generating article of claim 9, wherein: The functional section includes a temperature-resistant section having a hollow channel, wherein the hollow channel runs through two longitudinal end surfaces of the temperature-resistant section, the temperature-resistant section is located between the filter section and the aerosol generating matrix, and both ends of the temperature-resistant section are in contact with the filter section and the aerosol generating matrix respectively.

14. An aerosol-generating article according to claim 13, characterized in that The functional section includes a temperature-lowering section. The temperature-lowering section and the temperature-resistant section are both located between the aerosol-generating substrate and the filtering section. The temperature-lowering section is located at one end of the temperature-resistant section away from the aerosol-generating substrate.

15. The aerosol-generating article of claim 9, wherein: The aerosol generating article comprises a blocking member, which is arranged on an end surface of the aerosol generating substrate away from the functional section in the longitudinal direction.

16. The aerosol-generating article of claim 9, wherein: The aerosol generating substrate and the functional segment are both cylindrical, wherein the longitudinal direction is the axial direction of the functional segment and the aerosol generating substrate or a direction parallel to the axial direction, and the longitudinal direction and the transverse direction are perpendicular to each other.

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