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 the transverse air channel is isolated from the two longitudinal end faces of the aerosol generation substrate. The transverse air channel guides the airflow to flow in the transverse direction, so that the airflow can be diffused in the aerosol generating matrix in the transverse direction, the extraction uniformity of the aerosol is improved, and the taste consistency is good; the transverse air channel can also increase the specific surface area of the aerosol generating substrate, heat transfer is facilitated, the heating efficiency is improved, and the aerosol extraction efficiency 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 for the embodiments of the present application. No description herein is admitted to be prior art by virtue of its 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, during the process of aerosol generation from an aerosol-generating substrate, the aerosol extraction efficiency is low. 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 objectives, an embodiment of the present application provides an aerosol generating substrate, wherein the aerosol generating substrate has a transverse air channel extending in the transverse direction, and the transverse air channel is isolated from two end surfaces of the aerosol generating substrate in the longitudinal direction.

[0007] In some embodiments, at least one end of the transverse airway passes through a circumferential surface of the aerosol-generating substrate.

[0008] In some embodiments, there are multiple transverse airways, and the multiple transverse airways constitute an airway group, and the transverse airways of each airway group are distributed at intervals along the circumference of the aerosol generating substrate.

[0009] In some embodiments, there are multiple airway groups, and the multiple airway groups are distributed at intervals along the longitudinal direction of the aerosol generating substrate.

[0010] In some embodiments, the interior of the aerosol generating substrate has longitudinal air channels extending in the longitudinal direction, and each of the transverse air channels is connected to at least one of the longitudinal air channels.

[0011] In some embodiments, at least one end of the longitudinal air channel penetrates the longitudinal end surface of the aerosol generating substrate; or,

[0012] Both ends of the longitudinal air channel are isolated from two longitudinal end surfaces of the aerosol generating substrate.

[0013] The present application also provides an aerosol generating product, including:

[0014] An aerosol-generating substrate as described in any one of the above;

[0015] A wrapping layer is provided around the periphery of the aerosol generating substrate.

[0016] In some embodiments, the aerosol generating article comprises a support layer, wherein the support layer is disposed between the outer peripheral surface of the aerosol generating substrate and the wrapping layer, and the support layer is formed with airflow channels penetrating through two longitudinal end surfaces thereof.

[0017] In some embodiments, there are multiple airflow channels, and the multiple airflow channels are arranged at intervals in the circumferential direction around the aerosol generating substrate.

[0018] In some embodiments, the aerosol generating product includes a functional segment arranged at one end of the aerosol generating substrate along the longitudinal direction, the functional segment includes a hollow structure, the hollow structure forms a hollow channel, the hollow channel runs through two end surfaces of the hollow structure along the longitudinal direction, and the center line of the hollow structure extending along the longitudinal direction passes through the hollow channel.

[0019] In some embodiments, a first air inlet hole is formed at a portion of the wrapping layer corresponding to the hollow structure, and the first air inlet hole penetrates the inner and outer surfaces of the wrapping layer in the transverse direction.

[0020] In some embodiments, ventilation holes are formed on the outer peripheral surface of the hollow structure, and the ventilation holes communicate with the first air inlet and the hollow channel.

[0021] In some embodiments, the functional segment includes a filter segment, and the filter segment is disposed at one end of the hollow structure away from the aerosol generating substrate in the longitudinal direction.

[0022] In some embodiments, a second air inlet hole is formed at a portion of the wrapping layer corresponding to the filter section, and the second air inlet hole penetrates the inner and outer surfaces of the wrapping layer in the transverse direction.

[0023] In some embodiments, the aerosol-generating article comprises a heatable embedded component disposed inside the aerosol-generating substrate.

[0024] In some embodiments, the aerosol generating matrix and the functional segment are both axisymmetric structures and / or rotating body structures, the longitudinal direction is the extension direction of the central axis of the aerosol generating matrix and the central axis of the functional segment, and the transverse and longitudinal directions are perpendicular to each other.

[0025] The aerosol generating matrix provided in the embodiment of the present application has a lateral airway to guide the airflow to flow in the lateral direction, which is not only beneficial for the airflow to diffuse in the lateral direction inside the aerosol generating matrix, thereby improving the uniformity of aerosol extraction and good taste consistency; the lateral airway can also increase the specific surface area of ​​the aerosol generating matrix, which is beneficial for heat transfer, improving heating efficiency, and improving aerosol extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 for Figure 1 A cross-sectional view of a first aerosol generating substrate is shown;

[0028] Figure 3 This is a schematic structural diagram of a second aerosol generating substrate in one embodiment of the present application;

[0029] Figure 4 Schematic diagram of the structure of the third aerosol generating substrate in one embodiment of the present application;

[0030] Figure 5 for Figure 4 Sectional view in the AA direction;

[0031] Figure 6 This is a schematic structural diagram of a fourth aerosol generating substrate in one embodiment of the present application;

[0032] Figure 7 Schematic diagram of the structure of the fifth aerosol generating substrate in one embodiment of the present application;

[0033] Figure 8 This is a schematic structural diagram of a first aerosol generating product in one embodiment of the present application;

[0034] Fig. 9 for Figure 8 A cross-sectional view of the first aerosol-generating article shown;

[0035] Fig.10 This is a schematic structural diagram of a first support layer and an aerosol generating substrate in one embodiment of the present application;

[0036] Fig.11 This is a schematic diagram of the structure of the second supporting layer in one embodiment of the present application;

[0037] Fig.12 This is a schematic structural diagram of a second aerosol generating product in one embodiment of the present application;

[0038] Fig.13Schematic diagram of the structure of a third aerosol generating product in one embodiment of the present application.

[0039] Description of Reference Numerals

[0040] Aerosol generating matrix 1; transverse airway 1a; airway group 1ab; longitudinal airway 1b; wrapping layer 2; supporting layer 3; airflow channel 3a; convex ridges 31; outer annular wall 32; inner annular wall 33; functional section 4; hollow structure 41; hollow channel 41a; filtering section 42; embedded part 5. DETAILED DESCRIPTION

[0041] 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.

[0042] In the present application, a plurality includes two and more than two. The unit "μm" is micrometer. The unit "℃" is Celsius.

[0043] In the related art, since the aerosol is transmitted longitudinally inside the aerosol generating matrix, the transmission distance is short, and the transmission speed and delivery amount show a delivery trend with the highest center line, which brings about problems such as difficulty in smooth aerosol delivery and difficulty in temperature control. This makes it necessary to consider pressure drop and cooling designs in the design of aerosol generating products, which invisibly increases the structural design, processing complexity and raw material cost control difficulty of aerosol generating products.

[0044] See also Figures 1 to 7 The embodiment of the present application provides an aerosol generating substrate 1, the aerosol generating substrate 1 has a transverse air channel 1a extending in the transverse direction, and the transverse air channel 1a is isolated from two longitudinal end surfaces of the aerosol generating substrate 1. In other words, the transverse air channel 1a does not contact the two longitudinal end surfaces of the aerosol generating substrate 1, or does not extend to the two end surfaces.

[0045] In an 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.

[0046] See also Figures 8 to 9The embodiment of the present application also provides an aerosol generating product, which includes the aerosol generating substrate 1 and the wrapping layer 2 in any embodiment of the present application, and the periphery of the aerosol generating substrate 1 is wrapped with the wrapping layer 2.

[0047] In some embodiments, the heating temperature of the aerosol generating substrate 1 is about 300° C., and the wrapping layer 2 can withstand a temperature of 100° C. to 420° C. (inclusive of 100° C. and 420° C.) For example, the wrapping layer 2 can be paper, a composite material with paper as a carrier, an inorganic mineral or a metal film, and the like.

[0048] The aerosol generating article is used for a user to inhale the aerosol generated by the aerosol generating substrate 1. One end of the aerosol generating article in the longitudinal direction faces the user, and when the user inhales the aerosol, the aerosol flows in the longitudinal direction.

[0049] The longitudinal direction refers to the extending 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°).

[0050] The aerosol generating matrix 1 provided in the embodiment of the present application has a transverse airway 1a that guides the airflow to flow in the transverse direction, which is not only beneficial for the airflow to diffuse in the transverse direction inside the aerosol generating matrix 1, 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 beneficial for heat transfer, improving heating efficiency, and improving aerosol extraction efficiency.

[0051] The aerosol-generating article is intended for use with an aerosol-generating device having a heating element.

[0052] 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 heating element is used to heat the aerosol generating substrate 1 to generate aerosol.

[0053] The heating methods of the heating element include, but are not limited to, resistance heating, electromagnetic heating, infrared heating, microwave heating or laser heating, etc. The transfer of heat in the form of thermal convection means that the heating element is not in contact with the aerosol generating substrate 1, the heating element first heats the air, and then the hot air bakes and heats the aerosol generating substrate 1. Thermal conduction means that the heating element 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 element can heat the aerosol generating substrate 1 in one or more of the three forms of thermal conduction, thermal convection and thermal radiation.

[0054] In one embodiment, please refer to Figures 1 to 7 , at least one end of the transverse airway 1a passes through the circumferential surface of the aerosol generating substrate 1. For example, see Figure 1 and Figure 2 One end of the transverse airway 1a passes through the circumferential surface of the aerosol generating substrate 1 and the other end is closed. Figure 3 , both ends of the transverse air channel 1a pass through the circumferential surface of the aerosol generating substrate 1. In this way, external airflow, such as air, can enter the transverse air channel 1a through the opening of the transverse air channel 1a on the circumferential surface of the aerosol generating substrate 1, and then diffuse inside the aerosol generating substrate 1. The external airflow entering the interior of the aerosol generating substrate 1 can increase the overall gas flow rate, thereby improving the aerosol extraction efficiency and increasing the aerosol amount.

[0055] The lateral extension of the transverse air passage 1a may be that the center line of the transverse air passage 1a extends in the lateral direction. The center line of the transverse air passage 1a refers to the line connecting the centers of the flow sections of the transverse air passage 1a.

[0056] The transverse airway 1a can be an axisymmetric figure or a rotational figure. The center line of the transverse airway 1a is the central axis. The central axis refers to the symmetry line of the axisymmetric figure and / or the rotational figure.

[0057] Taking the cylindrical aerosol generating substrate as an example, the transverse direction is the radial direction, that is, the transverse airway 1a extends in the radial direction.

[0058] For example, in one embodiment, please refer to Figures 1 to 3 , the transverse air channel 1a is formed inside the aerosol generating matrix 1, and the transverse air channel 1a is a linear hole structure, and the central axis of the transverse air channel 1a is a straight line along the transverse direction. Figure 4 and Figure 5 The transverse air channel 1a is formed on the outer peripheral surface of the aerosol generating matrix 1, and the transverse air channel 1a is a groove structure opening outward, and the central axis of the groove structure is a straight line along the transverse direction.

[0059] In one embodiment, please refer to Figure 1 and Figure 4 The shape of the flow section of the transverse airway 1a includes but is not limited to semicircular, semi-elliptical, circular, elliptical, polygonal (such as triangle, quadrilateral or pentagon, etc.) or irregular shape, etc., where irregular shape refers to other symmetrical or asymmetrical shapes other than the shapes listed above.

[0060] In one embodiment, the flow cross-sectional area of ​​the transverse airway 1a can be kept consistent along its center line (see Figure 6 ) or gradually decrease.

[0061] For example, in one embodiment, please refer to Figure 4 and Figure 5 The transverse airway 1a is formed on the outer peripheral surface of the aerosol generating matrix 1, and the transverse airway 1a is a groove structure opening outward. The flow cross-sectional area of ​​the transverse airway 1a gradually decreases along its center line, and the projection of the transverse airway 1a on the aerosol generating matrix 1 is elliptical.

[0062] In one embodiment, please refer to Figure 6 , the number of transverse airways 1a is multiple, and multiple transverse airways 1a constitute an airway group 1ab. The transverse airways 1a of each airway group 1ab are distributed at intervals along the circumference of the aerosol generating matrix 1. On the one hand, multiple transverse airways 1a can further increase the specific surface area of ​​the aerosol generating matrix 1, facilitate heat transfer, and improve heating efficiency to increase the amount of aerosol. On the other hand, multiple transverse airways 1a are distributed at intervals along the circumference, and the external airflow and / or aerosol can flow in multiple directions and multiple paths along the circumference, further improving the diffusion efficiency of the airflow in the aerosol generating matrix 1, so that the aerosol extraction uniformity is better and the user has a good inhalation experience.

[0063] In one embodiment, the number of airway group 1ab is 1.

[0064] In one embodiment, please refer to Figure 6 The number of airway groups 1ab is multiple, and the multiple airway groups 1ab are spaced apart in the longitudinal direction of the aerosol generating substrate 1. During the flow of the aerosol in the longitudinal direction, the external airflow can enter the interior of the aerosol generating substrate 1 from multiple positions of the aerosol generating substrate 1 in the longitudinal direction, and / or the aerosol generated at various parts of the aerosol generating substrate 1 can gradually converge during the flow, thereby improving the extraction efficiency.

[0065] In one embodiment, please refer to Figure 2 and Figure 3The interior of the aerosol generating matrix 1 has a longitudinal air channel 1b extending in the longitudinal direction, and each transverse air channel 1a is connected to at least one longitudinal air channel 1b. On the one hand, during the suction process, the longitudinal air channel 1b is conducive to the aerosol flowing in the longitudinal direction, reducing the suction resistance. On the other hand, the external airflow can quickly diffuse to the longitudinal air channel 1b through the transverse air channel 1a, thereby improving the aerosol extraction efficiency.

[0066] The longitudinal air passage 1b extends longitudinally, which means that the center line of the longitudinal air passage 1b extends longitudinally. The center line of the longitudinal air passage 1b refers to the line connecting the centers of the flow sections of the longitudinal air passage 1b.

[0067] The longitudinal air passage 1b may be an axisymmetric figure and / or a rotational figure. The center line of the longitudinal air passage 1b is the central axis.

[0068] For example, in one embodiment, please refer to Figure 2 and Figure 3 The longitudinal airway 1b is a straight hole structure, and the center line of the longitudinal airway 1b is a straight line along the longitudinal direction.

[0069] In one embodiment, at least one end of the longitudinal airway 1b penetrates the end surface of the aerosol generating substrate 1 in the longitudinal direction. For example, one end of the longitudinal airway 1b penetrates one end surface of the aerosol generating substrate 1 in the longitudinal direction and the other end is closed. For another example, the longitudinal airway 1b penetrates two end surfaces of the aerosol generating substrate 1 in the longitudinal direction. The airflow can flow from one end of the aerosol generating substrate 1 along the longitudinal airway 1b to the other end of the aerosol generating substrate 1. The aerosol can flow more smoothly through the longitudinal airway 1b, the aerosol can be delivered in an orderly manner, the aerosol flow resistance is smaller, the controllability is good, the aerosol extraction efficiency is effectively improved, and the inhalation experience is improved.

[0070] In one embodiment, please refer to Figure 2 and Figure 3 , both ends of the longitudinal air channel 1b are isolated from the two longitudinal end surfaces of the aerosol generating substrate 1. In other words, both ends of the longitudinal air channel 1b are not in contact with the two longitudinal end surfaces of the aerosol generating substrate 1. In other words, the longitudinal air channel 1b is a blind hole with both ends closed.

[0071] In one embodiment, please refer to Figure 2 and Figure 3 The number of the longitudinal airways 1b is multiple, and the multiple longitudinal airways 1b are distributed at intervals.

[0072] Exemplarily, the distribution of the longitudinal air passages 1b is not limited, and the longitudinal air passages 1b may be arranged in a one-dimensional straight line, a ring, a two-dimensional matrix, or a plurality of concentric rings.

[0073] For example, in some embodiments, please refer to Figure 3, the lengths of the longitudinal airways 1b are equal in the longitudinal direction. Figure 2 , the lengths of at least two longitudinal airways 1b along the longitudinal direction are not equal.

[0074] For example, in one embodiment, please refer to Figure 2 and Figure 3 Both ends of the longitudinal air channel 1b are isolated from the two longitudinal end surfaces of the aerosol generating substrate 1. One end of the transverse air channel 1a penetrates the circumferential surface of the aerosol generating substrate 1 and the other end is closed, and each transverse air channel 1a is connected to two longitudinal air channels 1b.

[0075] In one embodiment, please refer to Figure 3 Both ends of the longitudinal air channel 1b are isolated from the two longitudinal end surfaces of the aerosol generating substrate 1, or do not extend to the two end surfaces. Both ends of the transverse air channel 1a penetrate the circumferential surface of the aerosol generating substrate 1, and each transverse air channel 1a is connected to four longitudinal air channels 1b.

[0076] In one embodiment, please refer to Figure 2 Both ends of the longitudinal air channel 1b are isolated from the two longitudinal end surfaces of the aerosol generating substrate 1. One end of the transverse air channel 1a penetrates the circumferential surface of the aerosol generating substrate 1 and the other end is closed, and each transverse air channel 1a is connected to one longitudinal air channel 1b.

[0077] In one embodiment, the plane perpendicular to the longitudinal direction is used as the projection plane, and the projection shape of the longitudinal airway 1b includes but is not limited to semicircle, semi-ellipse, circle, ellipse, polygon (such as triangle, quadrilateral or pentagon, etc.) or irregular shape, etc., where irregular shape refers to other symmetrical or asymmetrical shapes other than the shapes listed above.

[0078] In one embodiment, the aerosol generating substrate 1 is an integrally formed structure.

[0079] 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.

[0080] Extrusion molding refers to a processing method in which a 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 die such as a die. For example, a transverse air channel 1a and / or a longitudinal air channel 1b can be formed by a die such as a die.

[0081] 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 transverse airway 1a and the longitudinal airway 1b described in the present application are 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 flow cross-sectional area and length of the airway are much larger than those of the micropores. The airway is mainly formed by design and processing, such as by die processing. Therefore, the flow cross-sectional area and length of the airway can be changed according to the design requirements, and 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 flow cross-sectional area and length of the micropores are naturally formed by the extrusion process and the material components. The material feeding cylinder expands to a certain extent after flowing out of the die to form micropores. In some embodiments, the aerosol generating matrix can be formed by die casting, and the longitudinal airway and the transverse airway are formed at one time. It is also possible to first form the longitudinal air channel during the die casting process and then form the transverse air channel through further processing.

[0082] In one embodiment, please refer to Figures 9 to 11 The aerosol generating article includes a support layer 3, which is disposed between the outer peripheral surface of the aerosol generating substrate 1 and the wrapping layer 2, and the support layer 3 is formed with an airflow channel 3a that penetrates its two end surfaces in the longitudinal direction. The support layer 3 abuts against the inner peripheral surface of the wrapping layer 2 and the outer peripheral surface of the aerosol generating substrate 1, and the support layer 3 plays a supporting role. The aerosol generated by the aerosol generating substrate 1 can be transmitted to the airflow channel 3a through the micropores and / or the transverse airway 1a, and the aerosol can be transmitted in the longitudinal direction through the airflow channel 3a.

[0083] In one embodiment, please refer to Figure 10 to Figure 11 The number of the airflow channels 3a is multiple, and the multiple airflow channels 3a are arranged at intervals in the circumferential direction around the aerosol generating substrate 1. In this way, the aerosol generated by the aerosol generating substrate 1 can be transported outward from various circumferential positions to each airflow channel 3a, thereby accelerating the transport efficiency of the aerosol and thus increasing the amount of aerosol.

[0084] For example, in one embodiment, please refer to Fig.11 The supporting layer 3 includes a plurality of convex ribs 31, and the plurality of convex ribs 31 are arranged at intervals along the circumferential direction to separate a plurality of air flow channels 3a.

[0085] In one embodiment, please refer to Fig.11 The convex ridges 31 are in a sheet-like structure, and the inner and outer sides of each sheet-like structure are alternately connected in sequence to form a wave-like structure. In this way, the structural strength of the support layer 3 is good, and more air flow channels 3a can be formed.

[0086] In one embodiment, please refer to Fig.11The support layer 3 includes an outer annular wall 32, which surrounds the outer periphery of the wavy structure and is connected to the outer side of the wavy structure. The outer annular wall 32 further improves the structural strength of the support layer 3.

[0087] In another embodiment, the supporting layer 3 does not have the outer annular wall 32 , and the outer side surface of the wavy structure is connected to the inner circumferential surface of the wrapping layer 2 .

[0088] In one embodiment, please refer to Fig.11 The support layer 3 includes an inner annular wall 33, which surrounds the inner periphery of the wavy structure and is connected to the inner side of the wavy structure. The structural strength of the support layer 3 is further improved by the inner annular wall 33. Exemplarily, the inner annular wall 33 is formed with a through-hole. In this way, the aerosol can enter the airflow channel 3a through the through hole.

[0089] In another embodiment, the support layer 3 does not have the inner annular wall 33, and the inner side surface of the wavy structure is connected to the outer peripheral surface of the aerosol generating substrate 1. In this way, the aerosol can directly enter the airflow channel 3a without hindrance.

[0090] For example, in one embodiment, the airflow channel 3a may be a spiral channel. That is, the three-dimensional shape of the airflow channel 3a is a spatial spiral line. The line connecting any point of the spiral channel and the starting point has an inclined angle relative to its axis. The spiral channel can greatly extend the flow path of the airflow, so that the aerosol can be evenly mixed, improve the uniformity of the aerosol, and enhance the user's inhalation experience.

[0091] In one embodiment, taking the plane perpendicular to the longitudinal direction as the projection plane, the projection shape of the airflow channel 3a includes but is not limited to semicircle, semi-ellipse, circle, ellipse, polygon (such as triangle, quadrilateral or pentagon, etc.) or irregular shape, etc., wherein irregular shape refers to other symmetrical or asymmetrical shapes other than the shapes listed above.

[0092] In one embodiment, please refer to Fig. 9 , Fig.12 and Fig.13The aerosol generating product includes a functional segment 4 disposed at one end of the aerosol generating matrix 1 in the longitudinal direction, and the functional segment 4 includes a hollow structure 41, and the hollow structure 41 is formed with a hollow channel 41a, and the hollow channel 41a runs through the two end faces of the hollow structure 41 in the longitudinal direction, and the center line of the hollow structure 41 extending in the longitudinal direction passes through the hollow channel 41a. In other words, the hollow channel 41a is located in the central area of ​​the hollow structure 41. The aerosol generated by the aerosol generating matrix 1 flows through the hollow channel 41a in the longitudinal direction and is then delivered to the user. On the one hand, the hollow channel 41a can increase the specific surface area, improve the aerosol flow path, and achieve rapid cooling, which is conducive to the user's lips contacting the aerosol generating product and inhaling the aerosol, reducing the chance of "burning the mouth". The hollow channel 41a can also buffer the aerosol, significantly improving the buffering capacity of the aerosol, so that the aerosol can be released stably, and the aerosol generating product has good mouthful consistency. On the other hand, since the flow rate of the fluid is faster the closer it is to the central area, the hollow channel 41a is located in the central area of ​​the hollow structure 41, so that the aerosol can maintain a faster flow rate and gather and transfer the aerosol to the central area of ​​the hollow structure 41, so that the suction resistance is moderate.

[0093] The functional section 4 can provide at least one of the functions of aerosol aggregation, dilution, cooling, interception and compensation.

[0094] The center line of the hollow structure 41 extending in the longitudinal direction refers to the line connecting the geometric centers of the two end surfaces of the hollow structure 41 in the longitudinal direction. Exemplarily, in some embodiments, the hollow structure 41 and the hollow channel 41a can both be axially symmetrical figures and / or rotating body figures with the central axis extending in the longitudinal direction, and the central axis of the hollow structure 41 and the central axis of the hollow channel 41a coincide with each other.

[0095] In one embodiment, please refer to Fig. 9 , Fig.12 and Fig.13 The aerosol generating matrix 1 and the functional segment 4 are both axially symmetrical structures and / or rotating body structures, the longitudinal direction is the extension direction of the central axis of the aerosol generating matrix 1 and the central axis of the functional segment 4, and the transverse direction is perpendicular to the longitudinal direction. In other words, the transverse airway 1a is perpendicular to the central axis of the aerosol generating matrix 1, and the aerosol can be quickly collected through the transverse airway 1a and then flow to the functional segment 4 along the longitudinal direction, thereby reducing the flow resistance of the aerosol.

[0096] In one embodiment, a first air inlet hole is formed at a position of the wrapping layer 2 corresponding to the hollow structure 41. That is, the projection of the first air inlet hole on the functional section 4 is located at the position where the hollow structure 41 is located.

[0097] The first air inlet hole penetrates the inner and outer surfaces of the wrapping layer 2 in the transverse direction. The first air inlet hole can guide external airflow, such as air, to the hollow structure 41. In this way, during the inhalation process, external airflow, such as air, can enter the hollow structure 41 through the first air inlet hole, which can not only enhance the aerosol gathering effect, but also further reduce the aerosol temperature by absorbing the heat of the aerosol through the external airflow.

[0098] Exemplarily, in one embodiment, the hollow structure 41 may be made of a loose material having microchannels, and air from the first air inlet may enter the interior of the hollow structure 41 through the microchannels.

[0099] Microchannels refer to disordered holes. In other words, microchannels are randomly generated. The hydraulic diameter of a microchannel is usually less than 100 μm. Disorder means that it is difficult to generate in an orderly manner according to the design. Exemplarily, the hollow structure 41 can be acetate fiber, which is a structure composed of filament bundles arranged side by side in a circumferential direction. The gaps between the filament bundles are microchannels.

[0100] Microchannels are holes in the microscopic sense, and the flow cross-sectional area of ​​the hollow channel 41a is much larger than that of the microchannel. The hollow channel 41a is mainly formed by design and processing, such as by mold processing, so the flow cross-sectional area and other dimensions of the hollow channel 41a can be changed according to design requirements, while the size of the microchannel is determined by the gap between the material components. For example, the flow cross-sectional area and length of the microchannel are naturally formed by the material components, and the material components can form a microchannel when they expand to a certain extent.

[0101] In one embodiment, a ventilation hole is formed on the outer peripheral surface of the hollow structure 41, and the ventilation hole connects the first air inlet and the hollow channel 41a. That is to say, the external airflow enters the hollow channel 41a through the ventilation hole and directly contacts the aerosol. On the one hand, the ventilation hole can accelerate the external airflow to enter the hollow channel 41a, and the aerosol buffered in the hollow channel 41a can quickly flow to the user, thereby improving the aerosol extraction efficiency and the aerosol release stability, and improving the suction experience; it can also reduce the temperature of the aerosol by mixing the external airflow and the aerosol. On the other hand, since the first air inlet and the ventilation hole are both located downstream of the aerosol generating matrix 1 in the longitudinal direction, the external airflow from the first air inlet basically does not enter the aerosol generating matrix 1, therefore, it has little effect on the aerosol generating matrix 1, and can avoid the aerosol generating matrix 1 and the external airflow to produce other substances at the heating temperature to a certain extent, thereby ensuring the purity of the aerosol.

[0102] It should be understood that the hydraulic diameter of the ventilation holes will generally be larger than the hydraulic diameter of the microchannels of the hollow structure 41 .

[0103] In some embodiments, the ventilation hole is aligned with the first air inlet hole. The ventilation hole is aligned with the first air inlet hole means that the projection of the first air inlet hole on the outer peripheral surface of the hollow structure 41 and the ventilation hole at least partially overlap.

[0104] 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-sectional area refers to the cross-sectional area taken by the streamline cluster perpendicular to the fluid.

[0105] In one embodiment, the two first air inlet holes form a pair, and the pair of first air inlet holes are arranged along a straight line perpendicular to the longitudinal direction. Exemplarily, the aerosol generating article is cylindrical, and the pair of first air inlet holes are symmetrically arranged along the diameter line of the aerosol generating article.

[0106] In one embodiment, each ventilation hole is aligned with a first air inlet hole.

[0107] In one embodiment, please refer to Fig. 9 , Fig.12 and Fig.13 The functional section 4 includes a filter section 42, which is disposed at one end of the hollow structure 41 away from the aerosol generating matrix 1 in the longitudinal direction. The filter section 42 is used to filter the aerosol. Exemplarily, the filter section 42 can block substances of target particle size and can also adjust the inhalation resistance. For example, the filter section 42 can filter large-size particles similar to powdery substances. The aerosol filtered by the filter section 42 has a higher consistency in particle size and a more delicate taste.

[0108] In one embodiment, a second air inlet hole is formed at a portion of the wrapping layer 2 corresponding to the filter section 42. That is, the projection of the second air inlet hole on the functional section 4 is located at the position where the filter section 42 is located.

[0109] The second air inlet hole penetrates the inner and outer surfaces of the wrapping layer 2 in the transverse direction. The second air inlet hole can guide the external airflow, such as air, to the filter section 42. In this way, during the inhalation process, the external airflow, such as air, can enter the filter section 42 through the second air inlet hole, which can not only enhance the aerosol gathering effect, but also further reduce the aerosol temperature by absorbing the heat of the aerosol through the external airflow.

[0110] In one embodiment, the two second air inlet holes form a pair, and the pair of second air inlet holes are arranged along a straight line perpendicular to the longitudinal direction. Exemplarily, the aerosol generating article is cylindrical, and the pair of second air inlet holes are symmetrically arranged along the diameter line of the aerosol generating article.

[0111] In one embodiment, a flow hole is formed on the outer peripheral surface of the filter section 42, and the flow hole is aligned with the second air inlet hole. The flow hole can introduce the external airflow from the second air inlet hole into the filter section 42. In this way, the inlet temperature of the aerosol is further reduced by the mixing and contact of the external airflow and the aerosol.

[0112] It should be understood that the alignment of the flow hole with the second air inlet hole means that the projection of the second air inlet hole on the outer peripheral surface of the filter section 42 and the flow hole at least partially overlap.

[0113] In one embodiment, each of the flow holes is aligned with a second air inlet hole.

[0114] In one embodiment, please refer to Fig. 9 and Fig.12 The aerosol generating product comprises a heatable embedded part 5, which is arranged inside the aerosol generating substrate 1. That is, the aerosol generating product has a heatable embedded part 5, and the heat from the embedded part 5 can be transferred laterally from the inside to the outside.

[0115] See also Fig. 9 and Fig.12 , Fig. 9 and Fig.12 The aerosol generating matrix 1 is the same but the functional segment 4 is different, the transverse airway 1a is formed on the outer peripheral surface of the aerosol generating matrix 1, and the transverse airway 1a is a groove structure opening outward. During the suction process, the heat from the embedded part 5 heats the aerosol generating matrix 1 to generate aerosol, and the outside air enters the transverse airway 1a through the opening of the transverse airway 1a facing outward. The aerosol generated by the part of the aerosol generating matrix 1 located around the transverse airway 1a can enter the transverse airway 1a through the micropores, and the aerosol collected in the transverse airway 1a and the airflow such as the outside air flow together toward the location of the functional segment 4, and enter the functional segment 4 through the micropores of the aerosol generating matrix 1.

[0116] See also Fig.13 , Fig.13 In the embodiment, the aerosol generating substrate 1 is formed with a transverse airway 1a and a longitudinal airway 1b, one end of the transverse airway 1a passes through the circumferential surface of the aerosol generating substrate, and the other end of the transverse airway 1a is connected to a longitudinal airway 1b. During the inhalation process, the aerosol generating substrate 1 is heated to generate aerosol, and the outside air enters the transverse airway 1a through the opening of the transverse airway 1a on the circumferential surface, and the aerosol generated by the part of the aerosol generating substrate 1 located around the transverse airway 1a can enter the transverse airway 1a through the micropores, and the airflow such as the aerosol and the outside air collected in the transverse airway 1a can enter the longitudinal airway 1b connected thereto, and the aerosol generated by the part of the aerosol generating substrate 1 located around the longitudinal airway 1b can enter the longitudinal airway 1b through the micropores, and the airflow in the longitudinal airway 1b flows longitudinally and enters the functional section 4, such as the filter section 42, through the micropores of the aerosol generating substrate 1.

[0117] In some embodiments, the embedded component 5 may be placed in a mold so that the material and the embedded component 5 are simultaneously integrally formed, for example, by extrusion.

[0118] For example, in some embodiments, the embedded component 5 can generate heat required for aerosol generation under the action of electromagnetic or infrared, etc. The embedded component 5 is preferably an electromagnetic induction body, which generates current and heat under an alternating magnetic field, thereby heating the aerosol generation matrix 1.

[0119] The materials used for the hollow structure 41 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.

[0120] The filter material used in the filter section 42 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.

[0121] The materials of the hollow structure 41 and the filter section 42 may be the same or different.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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 the transverse air channel is isolated from two end surfaces of the aerosol generating substrate in the longitudinal direction.

2. The aerosol-generating substrate according to claim 1, characterized in that At least one end of the transverse air channel passes through the circumferential surface of the aerosol-generating substrate.

3. The aerosol-generating substrate according to claim 1, characterized in that There are multiple transverse airways, and the multiple transverse airways constitute an airway group. The transverse airways of each airway group are distributed at intervals along the circumference of the aerosol generating substrate.

4. The aerosol-generating substrate according to claim 3, characterized in that There are multiple airway groups, and the multiple airway groups are distributed at intervals along the longitudinal direction of the aerosol generating substrate.

5. The aerosol-generating substrate according to claim 1, characterized in that The interior of the aerosol generating substrate has longitudinal air channels extending in the longitudinal direction, and each of the transverse air channels is connected to at least one of the longitudinal air channels.

6. The aerosol-generating substrate according to claim 5, characterized in that At least one end of the longitudinal air channel penetrates the end surface of the aerosol generating substrate along the longitudinal direction; or, Both ends of the longitudinal air channel are isolated from two longitudinal end surfaces of the aerosol generating substrate.

7. An aerosol generating product, characterized in that include: The aerosol-generating substrate according to any one of claims 1 to 6; A wrapping layer is provided around the periphery of the aerosol generating substrate.

8. An aerosol-generating article according to claim 7, characterized in that The aerosol generating article comprises a support layer, wherein the support layer is arranged between the outer peripheral surface of the aerosol generating substrate and the wrapping layer, and the support layer is formed with air flow channels penetrating through two longitudinal end surfaces thereof.

9. An aerosol generating article according to claim 8, characterized in that There are multiple airflow channels, and the multiple airflow channels are arranged at intervals in the circumferential direction around the aerosol generating substrate.

10. The aerosol-generating article of claim 7, wherein: The aerosol generating product includes a functional segment arranged at one end of the aerosol generating substrate along the longitudinal direction, the functional segment includes a hollow structure, the hollow structure forms a hollow channel, the hollow channel runs through two end surfaces of the hollow structure along the longitudinal direction, and the center line of the hollow structure extending along the longitudinal direction passes through the hollow channel.

11. An aerosol-generating article according to claim 10, characterized in that A first air inlet hole is formed at a position of the wrapping layer corresponding to the hollow structure, and the first air inlet hole penetrates the inner and outer surfaces of the wrapping layer along the transverse direction.

12. An aerosol-generating article according to claim 11, characterized in that A ventilation hole is formed on the outer peripheral surface of the hollow structure, and the ventilation hole communicates with the first air inlet hole and the hollow channel.

13. The aerosol-generating article of claim 10, wherein: The functional section comprises a filtering section, and the filtering section is arranged at one end of the hollow structure away from the aerosol generating substrate in the longitudinal direction.

14. An aerosol-generating article according to claim 13, characterized in that A second air inlet hole is formed at a portion of the wrapping layer corresponding to the filter section, and the second air inlet hole penetrates the inner and outer surfaces of the wrapping layer in the transverse direction.

15. The aerosol-generating article of claim 7, wherein: The aerosol-generating article comprises a heatable embedded part, which is arranged inside the aerosol-generating substrate.

16. The aerosol-generating article of claim 10, wherein: The aerosol generating matrix and the functional segment are both axisymmetric structures and / or rotating body structures, the longitudinal direction is the extension direction of the central axis of the aerosol generating matrix and the central axis of the functional segment, and the transverse direction is perpendicular to the longitudinal direction.

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