Aerosol-generating product

Abstract

The present disclosure relates to the technical field of aerosol generation. Provided is an aerosol-generating product, the aerosol-generating product comprising a functional section and an aerosol-generating matrix section. The functional section comprises a cooling section, the cooling section being provided with a central channel and a side channel, and the side channel being located on the outer side of the central channel. The functional section is arranged at one end of the aerosol-generating matrix section in the longitudinal direction, the aerosol-generating matrix section being provided with a transverse gas channel extending in the transverse direction, and the end of each of the central channel and the side channel close to the aerosol-generating matrix section being communicated with the aerosol-generating matrix section. The aerosol-generating matrix section provided in the present disclosure can decrease the temperature of aerosols.

Description

An aerosol generating product

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on the Chinese patent application with application number 202310927723.5, application date July 26, 2023, and invention name “A Aerosol Generating Product”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into the present disclosure as a reference. Technical Field

[0003] The present disclosure relates to the field of aerosol generation technology, and in particular to an aerosol generating product. Background Art

[0004] This section is intended to provide a background or context for the embodiments of the present disclosure. No admission is made that the description herein is prior art by virtue of its inclusion in this section.

[0005] The aerosol-generating matrix segment can form an aerosol by ignition or by heating without combustion. For example, the heat-without-combustion aerosol-generating matrix segment is heated using an external heat source to a sufficient temperature to emit an aerosol. The aerosol-generating matrix segment does not burn, and the aerosol is released during use by heating the aerosol-generating matrix segment.

[0006] In the related art, the aerosol released by the aerosol generating matrix section has a high temperature, which causes the problem of "burning the mouth".

[0007] Summary of the Invention

[0008] In view of this, embodiments of the present disclosure desire to provide an aerosol-generating article capable of reducing the temperature of aerosol.

[0009] To achieve the above objectives, the technical solution of the embodiment of the present disclosure is implemented as follows:

[0010] The present disclosure provides an aerosol-generating article comprising:

[0011] A functional section, comprising a cooling section, wherein the cooling section is formed with a central channel and side channels, wherein the side channels are located outside the central channel;

[0012] An aerosol generating matrix segment, wherein the functional segment is provided at one end of the aerosol generating matrix segment along the longitudinal direction, the aerosol generating matrix segment forms a transverse airway extending along the transverse direction, and the central channel and the side channel are both connected to the aerosol generating matrix segment at one end close to the aerosol generating matrix segment.

[0013] In one embodiment, the aerosol generating substrate segment is formed with a longitudinal air channel extending in the longitudinal direction, at least one end of the longitudinal air channel passes through the longitudinal end surface of the aerosol generating substrate segment, and each of the transverse air channels is connected to at least one of the longitudinal air channels.

[0014] In one embodiment, the central channel and the side channel are respectively connected to at least one of the longitudinal air channels at one end close to the aerosol generating substrate segment.

[0015] In one embodiment, there are multiple side channels, and the multiple side channels are distributed at intervals along the circumference of the central channel.

[0016] In one embodiment, the side channel is formed inside the cooling section.

[0017] In one embodiment, the cooling section includes an outer peripheral layer, an inner peripheral layer and convex ridges, the outer peripheral layer is located laterally outside the inner peripheral layer and both are circular, the inner peripheral layer defines the central channel, and the convex ridges are arranged between the outer peripheral layer and the inner peripheral layer and jointly define the side channel.

[0018] In one embodiment, the cooling section comprises an annular top wall, and the annular top wall seals the inner peripheral layer and the outer peripheral layer at one end away from the aerosol generating substrate section.

[0019] In one embodiment, the cross-sectional area of ​​the side channel is 0.01 mm 2 to 0.5mm 2 .

[0020] In one embodiment, the central channel and the side channels both pass through the two end faces of the cooling section in the longitudinal direction; the aerosol generating product includes a first blocking member, which is arranged on the end face of the cooling section in the longitudinal direction away from the aerosol generating matrix section, and the first blocking member is formed with a flow port connected to the central channel, and the first blocking member blocks the port of the side channel in the longitudinal direction away from the aerosol generating matrix section.

[0021] In one embodiment, the aerosol generating product includes a wrapping layer, and the outer peripheral surface of the aerosol generating matrix segment and the outer peripheral surface of the functional segment are both wrapped with the wrapping layer. The wrapping layer has pores formed at the position corresponding to the cooling segment, and the pores are connected to the side channel.

[0022] In one embodiment, the number of the air holes is 1 to 10; and / or,

[0023] The hydraulic diameter of the pores is 0.1 mm to 2.0 mm.

[0024] In one embodiment, the aerosol-generating article comprises a second blocking member, which blocks an end face of the aerosol-generating substrate segment away from the cooling segment in the longitudinal direction.

[0025] In one embodiment, the side channel is formed on the outer peripheral surface of the cooling section.

[0026] In one embodiment, there are multiple transverse air channels, and the multiple transverse air channels are distributed at intervals along the circumference of the aerosol generating substrate segment.

[0027] In one embodiment, the functional section includes a filtering section, and the filtering section is arranged at one end of the cooling section away from the aerosol generating substrate section in the longitudinal direction.

[0028] In one embodiment, the functional segment and the aerosol generating matrix segment are both cylindrical, wherein the longitudinal direction is the axial direction of the functional segment and the aerosol generating matrix segment or a direction parallel to the axial direction, and the longitudinal direction and the transverse direction are perpendicular to each other.

[0029] The present disclosure provides an aerosol generating product. On the one hand, by forming a transverse airway extending in the transverse direction in the aerosol generating matrix segment, the transverse airway is not only conducive to the diffusion of the airflow in the transverse direction inside the aerosol generating matrix segment, thereby improving the uniformity of aerosol extraction and having a good consistency in taste; the transverse airway is also conducive to heat transfer, improving heating efficiency, and improving aerosol extraction efficiency. On the other hand, the side channels can provide more aerosol flow paths, reduce suction resistance, and improve aerosol extraction efficiency. Both the central channel and the side channels can increase the specific surface area, thereby increasing the heat exchange area, achieving rapid cooling, and avoiding the "burning mouth" problem that occurs when the user inhales the aerosol. The central channel and the side channels can also be used to buffer the aerosol, significantly improving the aerosol's caching capacity, so that the aerosol can be released stably, and the aerosol generating product has good puff-by-puff consistency, thereby improving the user's smoking experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic cross-sectional view of a first aerosol-generating article according to an embodiment of the present disclosure;

[0031] FIG2 is a schematic cross-sectional view of a second aerosol-generating article according to an embodiment of the present disclosure;

[0032] FIG3 is a schematic cross-sectional view of a third aerosol-generating article according to an embodiment of the present disclosure;

[0033] FIG4 is a schematic structural diagram of a first cooling section in one embodiment of the present disclosure;

[0034] FIG5 is a schematic structural diagram of a second cooling section in one embodiment of the present disclosure;

[0035] FIG6 is a schematic structural diagram of a third cooling section in an embodiment of the present disclosure;

[0036] FIG. 7 is a schematic structural diagram of a first aerosol-generating article in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of the present disclosure can be combined with each other, and the detailed description in the specific implementation methods should be understood as an explanation of the purpose of the present disclosure and should not be regarded as an improper limitation on the present disclosure.

[0038] In this disclosure, a plurality includes two and more than two. The unit "mm" is millimeter. The unit "mm 2 ” is square millimeters.

[0039] The presently disclosed embodiments provide an aerosol-generating article. Referring to Figures 1 to 7 , the aerosol-generating article 100 includes a functional segment 1 and an aerosol-generating matrix segment 2. The functional segment 1 includes a cooling segment 11, which is formed with a central channel 11a and side channels 11b, with the side channels 11b being located outside the central channel 11a. The functional segment 1 is provided at one longitudinal end of the aerosol-generating matrix segment 2. The aerosol-generating matrix segment 2 is formed with a transverse airway 2a extending in the transverse direction, and the central channel 11a and the side channels 11b, adjacent to the aerosol-generating matrix segment 2, are both connected to the aerosol-generating matrix segment 2.

[0040] Wherein, the transverse direction intersects the longitudinal direction. For example, 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°). For example, the transverse direction may form a certain acute angle or obtuse angle with the longitudinal direction, i.e., the transverse direction is inclined relative to the longitudinal direction.

[0041] The aerosol-generating article 100 provided in the embodiments of the present disclosure has a transverse air channel 2a extending laterally within the aerosol-generating matrix segment 2. The transverse air channel 2a not only facilitates the lateral diffusion of airflow within the aerosol-generating matrix segment 2, thereby improving aerosol extraction uniformity and ensuring consistent taste, but also facilitates heat transfer, enhancing heating efficiency and aerosol extraction efficiency. Furthermore, the side channels 11b provide more aerosol flow paths, reducing inhalation resistance and improving aerosol extraction efficiency. Both the central channel 11a and the side channels 11b increase the specific surface area, thereby increasing the heat exchange area and achieving rapid cooling, thus avoiding the "burned mouth" problem that occurs when a user inhales the aerosol. The central channel 11a and the side channels 11b also serve to buffer aerosol, significantly improving the aerosol buffering capacity and enabling stable aerosol release. The aerosol-generating article 100 provides puff-by-puff consistency, enhancing the user's inhalation experience.

[0042] It should be noted that in the embodiments of the present disclosure, the aerosol-generating matrix segment 2 is used to generate aerosols by heating. Exemplarily, the aerosol-generating matrix segment 2 can be used to generate aerosols by heating without burning. That is, the aerosol-generating matrix segment 2 is heated to below the ignition point to generate aerosols. The aerosol-generating matrix segment 2 does not burn during the aerosol generation process. In some application scenarios, the aerosol-generating matrix segment 2 can be used to generate aerosols by ignition. The aerosol-generating matrix segment 2 of the present disclosure is more commonly used to generate aerosols by heating without burning.

[0043] 1 to 3 , the functional section 1 includes a filter section 12 disposed at one end of the cooling section 11 longitudinally away from the aerosol-generating matrix section 2. The filter section 12 is configured to filter the aerosol generated by the aerosol-generating matrix section 2.

[0044] The aerosol-generating article 100 is configured to allow a user to inhale the aerosol generated by the aerosol-generating matrix segment 2. For example, the user can orally inhale the filtered aerosol by holding the filter segment 12. The aerosol generated by the aerosol-generating matrix segment 2 is transported to the filter segment 12 under the action of negative suction pressure.

[0045] In one embodiment, referring to Figures 1 to 3 , a plurality of transverse air channels 2a are provided, spaced apart along the circumference of the aerosol-generating matrix segment 2. This can further increase the specific surface area of ​​the aerosol-generating matrix segment 2, facilitating heat transfer and improving heating efficiency, thereby increasing the aerosol generation rate. Furthermore, the provision of multiple transverse air channels 2a further enhances the diffusion efficiency of the airflow within the aerosol-generating matrix segment 2, resulting in more uniform aerosol extraction and a better user puffing experience.

[0046] In one embodiment, referring to Figures 1 to 3 , the aerosol-generating matrix segment 2 is formed with longitudinal air channels 2b extending in the longitudinal direction. At least one end of the longitudinal air channels 2b extends through the longitudinal end surface of the aerosol-generating matrix segment 2, and each transverse air channel 2a communicates with at least one longitudinal air channel 2b. This allows airflow to enter the longitudinal air channels 2b through the side channels 11b and diffuse within the longitudinal air channels 2b, further improving the aerosol extraction efficiency. Furthermore, the airflow heats the longitudinal air channels 2b as it flows through them, causing them to expand and reduce their oxygen content, thereby improving the aerosol extraction efficiency. Furthermore, the connection with the transverse air channels 2a extends the extraction path, resulting in more uniform aerosol extraction.

[0047] For example, the number of longitudinal air passages 2b is not limited and may be one or more.

[0048] At least one end of the longitudinal air channel 2b passes through the longitudinal end surface of the aerosol generating matrix segment 2, which means that the longitudinal air channel 2b can pass through the opposite ends of the aerosol generating matrix segment 2 along the longitudinal direction, and the air flow can flow from one end of the aerosol generating matrix segment 2 along the longitudinal direction through the longitudinal air channel 2b to the other end of the aerosol generating matrix segment 2 along the longitudinal direction.

[0049] Of course, one end of the longitudinal air channel 2b may pass through the longitudinal end surface of the aerosol-generating matrix segment 2, while the other end of the longitudinal air channel 2b is a blind end. In this case, each longitudinal air channel 2b may pass through the same longitudinal end of the aerosol-generating matrix segment 2. In other embodiments, a portion of the longitudinal air channel 2b may pass through one longitudinal end of the aerosol-generating matrix segment 2, while another portion of the longitudinal air channel 2b passes through the other longitudinal end of the aerosol-generating matrix segment 2.

[0050] It can be understood that, compared with the longitudinal air channel 2b passing through one longitudinal end of the aerosol generating matrix segment 2, the longitudinal air channel 2b passing through both longitudinal ends of the aerosol generating matrix segment 2 is more conducive to reducing the user's inhalation resistance.

[0051] The longitudinal airway 2b can increase the specific surface area of ​​the aerosol generating matrix segment 2, facilitate heat transfer, and improve heating efficiency. The aerosol in the longitudinal airway 2b is transported to the suction end under the action of the suction negative pressure. The longitudinal airway 2b can reduce the user's suction resistance and improve the user experience. It should be noted that the suction resistance is positively correlated with the flow resistance of the aerosol. The smaller the flow resistance of the aerosol in the aerosol generating matrix segment 2, the smaller the suction resistance experienced by the user. The greater the flow resistance of the aerosol in the aerosol generating matrix segment 2, the greater the suction resistance experienced by the user.

[0052] In one embodiment, the central channel 11a and the side channels 11b are each connected to at least one longitudinal air channel 2b at one end near the aerosol-generating matrix segment 2. This allows airflow to enter the longitudinal air channel 2b through the side channels 11b and diffuse within the longitudinal air channel 2b, further improving the aerosol extraction efficiency. After the airflow extracts the aerosol, the user can inhale through the central channel 11a. In one embodiment, referring to Figures 1 to 3 , the central channel 11a of the cooling section 11 is located in the central region of the cooling section 11. In some embodiments, the longitudinal central axis of the cooling section 11 passes through the central channel 11a. Preferably, the central axis of the central channel 11a of the cooling section 11 coincides with the longitudinal central axis of the cooling section 11. Because the flow rate of fluid increases closer to the central region, the central channel 11a of the cooling section 11 is located in the central region of the cooling section 11, allowing the aerosol to maintain a relatively high flow rate and moderate inhalation resistance.

[0053] The central axis refers to the symmetry line of an axially symmetrical figure or a solid of rotation figure. In other words, the cooling section 11 and the central channel 11a can both be axially symmetrical figures or solid of rotation figures.

[0054] In one embodiment, referring to Figures 1 to 3 , the aerosol-generating article 100 includes a wrapping layer 3. The outer circumference of the aerosol-generating substrate segment 2 and the outer circumference of the functional segment 1 are both wrapped with the wrapping layer 3. Thus, the wrapping layer 3 provides a certain degree of protection for the aerosol-generating substrate segment 2, reducing the surface area of ​​the aerosol-generating substrate segment 2 directly exposed to the outside world. This reduces the chance of the aerosol-generating substrate segment 2 becoming damp and deteriorating due to contact with air, and also reduces the chance of contamination from contact between the aerosol-generating substrate segment 2 and other components of the aerosol-generating device.

[0055] For example, the wrapping layer 3 may be one or more layers. In FIG1 , the wrapping layer 3 is a single layer. Depending on the design requirements and manufacturing process of the aerosol-generating product, the wrapping layer 3 may be two or more layers. For example, during manufacturing, the cooling section 11 and the filtration section 12 may be first wrapped with a single layer of wrapping layer 3, and then wrapped with the aerosol-generating substrate section 2 with a second layer of wrapping layer 3. Other combinations are also possible.

[0056] Referring to Figures 1 to 3 , the wrapping layer 3 has air holes 3a formed in the area corresponding to the cooling section 11. These air holes 3a communicate with the side channels 11b. Air holes 3a are used to direct external airflow into the side channels 11b. External airflow, such as air, can enter the side channels 11b through the air holes 3a and then diffuse into the longitudinal and transverse air channels 2b and 2a, thereby extracting the aerosol.

[0057] In one embodiment, the number of air holes 3a is 1 to 10. For example, the number of air holes 3a can be 1, 2, 3, 6, 8, or 10. By setting an appropriate number of air holes 3a, not only can the intake of external airflow be increased, but external airflow can also be delivered to each corresponding side channel 11b to extract aerosol from various locations of the aerosol generating matrix segment 2, thereby improving the extraction rate and uniformity of the aerosol.

[0058] In one embodiment, the hydraulic diameter of the pores 3a is 0.1 mm to 2.0 mm. For example, the hydraulic diameter of the pores 3a can be 0.1 mm, 0.4 mm, 0.7 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.8 mm, or 2.0 mm. By setting the hydraulic diameter of the pores 3a to an appropriate size, the amount and velocity of the external airflow can be controlled, thereby facilitating aerosol extraction.

[0059] In one embodiment, the number of pores 3a is 1 to 10, and the hydraulic diameter of the pores 3a is 0.1 mm to 2.0 mm. In this way, the aerosol can be further extracted.

[0060] It should be noted that the hydraulic diameter refers to the ratio of four times the cross-sectional area of ​​the flow path to the perimeter. The flow path refers to the cross-section perpendicular to the streamlines of the fluid. For example, if the cross-sectional shape of central channel 11a is a regular quadrilateral, the hydraulic diameter is the ratio of four times the cross-sectional area of ​​the regular quadrilateral central channel 11a to the perimeter of the regular quadrilateral. For another example, if the cross-sectional shape of central channel 11a is circular, the hydraulic diameter is the diameter of the circular central channel 11a.

[0061] In one embodiment, referring to Figures 1 to 4 , a ventilation hole 11c is formed on the outer circumference of the cooling section 11 in a region aligned with the air hole 3a. The ventilation hole 11c connects the air hole 3a with the side channel 11b. External airflow from the air hole 3a can enter the side channel 11b through the ventilation hole 11c.

[0062] It should be understood that the ventilation hole 11c is formed at a portion of the outer circumference of the cooling section 11 aligned with the air hole 3a, which means that the projection of the air hole 3a on the outer circumference of the cooling section 11 and the ventilation hole 11c at least partially overlap.

[0063] In one embodiment, referring to Figures 1 to 6 , there are multiple side channels 11b, spaced apart along the circumference of the central channel 11a. By spacing apart the multiple side channels 11b around the circumference of the central channel 11a, multiple external airflows can be delivered for aerosol extraction, increasing the amount of aerosol extracted. Furthermore, the heat exchange area for the aerosol-containing airflow within the central channel 11a can be increased, further reducing its temperature and thereby lowering the aerosol inlet temperature.

[0064] In one embodiment, the number of side channels 11b is 1 to 30. For example, the number of side channels 11b can be 1, 4, 7, 10, 13, 16, 19, 22, 25, 27, or 30. By providing an appropriate number of side channels 11b, on the one hand, the external airflow can be delivered to various locations of the aerosol generating matrix segment 2 to improve the uniformity of aerosol extraction; on the other hand, the aerosol-containing airflow in the central channel 11a can be cooled to a large extent, thereby reducing the aerosol inlet temperature and improving the user's puffing experience.

[0065] In one embodiment, the cross-sectional area of ​​the side channel 11b is 0.01 mm 2 to 0.5mm 2 For example, the cross-sectional area of ​​the side channel 11b can be 0.01mm2 , 0.05mm 2 , 0.1mm 2 , 0.15mm 2 , 0.2mm 2 , 0.25mm 2 , 0.3mm 2 , 0.35mm 2 , 0.4mm 2 , 0.45mm 2 or 0.5mm 2 Here, by setting a suitable cross-sectional area, the flow velocity of the external airflow can be increased to cool the airflow containing aerosol in the central channel 11a.

[0066] In one embodiment, as shown in Figures 2 and 3 , both the central channel 11a and the side channels 11b pass through the longitudinal ends of the cooling section 11. The aerosol-generating article 100 includes a first blocking member 4 , which is disposed on the longitudinal end of the cooling section 11 distal from the aerosol-generating matrix section 2. The first blocking member 4 defines a flow port 4a that communicates with the central channel 11a. This allows an aerosol-containing airflow to pass through the central channel 11a, into the flow port 4a, and reach the suction end. The first blocking member 4 blocks the longitudinal end of the side channel 11b distal from the aerosol-generating matrix section 2. In this way, under the negative pressure of suction, the external airflow can be prevented from directly entering the suction end from the side channel 11b longitudinally away from the port of the aerosol generating matrix segment 2 to reduce the air flow rate of the external airflow entering the aerosol generating matrix segment 2. In this way, the flow velocity of the external airflow in the aerosol generating matrix segment 2 can be increased, thereby improving the extraction of aerosol by the external airflow and improving the user's utilization rate and overall uniformity of the aerosol during use.

[0067] For example, in one embodiment, the first blocking member 4 can be made of silicone, natural rubber, PLA (polylactide), aluminum foil, nickel foil, or other metal materials. In some embodiments, the first blocking member 4 can be a high-density acetate rod.

[0068] Exemplarily, in one embodiment, the wrapping layer 3 wraps around the outer periphery of the first blocking member 4 .

[0069] On the other hand, an embodiment of the present disclosure provides an aerosol generating device for use with the aerosol generating article 100 provided in the embodiment of the present disclosure. The aerosol generating device includes a heating component, which is used to heat the aerosol generating substrate segment 2 to generate an aerosol.

[0070] 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 matrix segment 2, and the heating component first heats the air, and then the hot air bakes and heats the aerosol-generating matrix segment 2. Heat conduction means that the heating component is in contact with the aerosol-generating matrix segment 2 and conducts heat to the aerosol-generating matrix segment 2. Exemplarily, resistance and electromagnetic heating mainly transfer heat to the aerosol-generating matrix segment 2 in the form of thermal conduction or thermal convection. Infrared heating, microwave heating or laser heating mainly transfer heat to the aerosol-generating matrix segment 2 in the form of thermal radiation. That is, the heating component can heat the aerosol-generating matrix segment 2 in one or more of the three forms of thermal conduction, thermal convection and thermal radiation.

[0071] In one embodiment, referring to FIG3 , the aerosol-generating article 100 includes a second blocking member 5 , which blocks the end face of the aerosol-generating matrix segment 2 longitudinally away from the cooling section 11. On the one hand, this can reduce or block external airflow from contacting the aerosol-generating matrix segment 2 through the end face of the aerosol-generating matrix segment 2 longitudinally away from the cooling section 11, thereby reducing heat dilution caused by the external airflow and ensuring a more stable temperature field during heating of the aerosol-generating matrix segment 2 and improving thermal efficiency. On the other hand, the blocking of one longitudinal end of the aerosol-generating matrix segment 2 allows the aerosol-generating matrix segment 2 to be heated in a hypoxic or anoxic environment to generate aerosol. The generated aerosol then diffuses toward the aerobic region, i.e., toward the external airflow, and is ultimately extracted by the external airflow. Since the aerosol-generating matrix segment 2 is heated with less oxygen, the generation of harmful substances can be reduced.

[0072] For example, in one embodiment, the second sealing member 5 can be made of silicone, natural rubber, PLA (polylactide), aluminum foil, nickel foil, or other metal materials. In some embodiments, the second sealing member 5 can be a high-density acetate rod. In other embodiments, a heating assembly can be used to seal the end face of the aerosol-generating matrix segment 2 that is longitudinally away from the cooling segment 11.

[0073] In some embodiments, the number of pores 3a is 1 to 10, and the hydraulic diameter of the pores 3a is 0.1 mm to 2.0 mm. The first blocking member 4 blocks the port of the side channel 11b longitudinally away from the aerosol generating matrix segment 2, and the second blocking member 5 blocks the end face of the aerosol generating matrix segment 2 longitudinally away from the cooling segment 11. In this way, compared with the related art, the intake speed of the external airflow in the embodiment of the present disclosure can be increased by 150% to 300%, and the inlet temperature of the aerosol can be reduced by 5°C to 15°C. Therefore, in the intake process of this setting, the extraction of the aerosol can be greatly improved, and the inlet temperature of the aerosol is moderate, and the user's inhalation experience is good.

[0074] In one embodiment, referring to Figure 4, the side channel 11b is formed inside the cooling section 11. In this way, the outer structure of the cooling section 11 can protect the side channel 11b to ensure stable delivery of external airflow and good working stability.

[0075] In one embodiment, referring to FIG4 , the cooling section 11 includes an outer peripheral layer 111, an inner peripheral layer 112, and convex ribs 113. The outer peripheral layer 111 is located laterally outside the inner peripheral layer 112, and both are in a circular shape. The inner peripheral layer 112 defines a central channel 11a. The convex ribs 113 are disposed between the outer peripheral layer 111 and the inner peripheral layer 112 and together define a side channel 11b. Exemplarily, the rib 113 includes a first barrier piece 1131 and a second barrier piece 1132, both of which extend longitudinally, one end of the first barrier piece 1131 and one end of the second barrier piece 1132 are connected at a certain angle, the other end of the first barrier piece 1131 and the other end of the second barrier piece 1132 are spaced apart so that the projection of the rib 113 along the longitudinal direction is roughly in the shape of "<", the connecting ends of the first barrier piece 1131 and the second barrier piece 1132 are connected to the outer wall of the inner peripheral layer 112, and the two ends of the interval between the first barrier piece 1131 and the second barrier piece 1132 are connected to the inner wall of the outer peripheral layer 111 to jointly define the side channel 11b.

[0076] In some embodiments, the number of ribs 113 is not limited and can be multiple. Multiple ribs 113 are arranged circumferentially between the inner wall of the outer peripheral layer 111 and the outer wall of the inner peripheral layer 112, and the first barrier sheet 1131 and the second barrier sheet 1132 of two adjacent ribs 113 are connected. In this way, the inner peripheral layer 112 can divide and seal the aerosol generating matrix segment 2, so that the external airflow first enters the side channel 11b through the air holes 3a, then enters the longitudinal airway 2b, and then realizes airflow reversal in the transverse airway 2a. On the one hand, the extraction flow path of the external airflow can be extended, and the extraction efficiency can be improved; on the other hand, the intake flow rate and flow rate of the external airflow can be precisely controlled by the number and cross-sectional size of the side channels 11b and the number and cross-sectional size of the air holes 3a.

[0077] Referring to Figures 2 and 4 , the side channel 11b can extend through both ends of the cooling section 11. Alternatively, as shown in Figure 1 , the end of the cooling section 11 remote from the aerosol-generating matrix section 2 can be sealed by an annular top wall 114 connecting the inner and outer peripheral layers. The cooling section 11 includes an annular top wall 114, which seals the end of the inner and outer peripheral layers 112 and 111 remote from the aerosol-generating matrix section 2. In other words, the end of the side channel 11b remote from the aerosol-generating matrix section 2 is sealed by the annular top wall 114. This prevents external airflow from directly entering the suction end through the end of the side channel 11b longitudinally remote from the aerosol-generating matrix section 2 under negative suction pressure, thereby reducing the amount of external airflow entering the aerosol-generating matrix section 2. This increases the flow rate of the external airflow within the aerosol-generating matrix section 2, thereby improving aerosol extraction by the external airflow and enhancing the user's aerosol utilization and overall uniformity during use.

[0078] In one embodiment, referring to Figures 5 and 6, the side channel 11b is formed on the outer peripheral surface of the cooling section 11. That is, the side channel 11b is a groove opening outward. In this way, the difficulty of processing the side channel 11b can be reduced. In some embodiments, the wrapping layer 3 closes the outward opening of the groove. In some embodiments, a plurality of circumferential cylindrical protrusions are formed on the outer peripheral surface of the cooling section 11, and the space between two adjacent cylindrical protrusions is a groove. In this way, the side channels 11b are independent of each other, and each side channel 11b can independently transport the external airflow, with high reliability.

[0079] In some embodiments, the shapes of the flow cross-sections of the air holes 3a, ventilation holes 11c, central channels 11a, side channels 11b, transverse air channels 2a and longitudinal air channels 2b include but are not limited to circular, elliptical or polygonal (such as square, prismatic or pentagonal, etc.).

[0080] In some embodiments, the projection of the filter segment 12, the cooling segment 11, and the aerosol-generating matrix segment 2 coincide with each other, using a plane perpendicular to the longitudinal direction as the projection plane. For example, in one embodiment, referring to Figures 1 to 3 , the projections of the filter segment 12, the cooling segment 11, and the aerosol-generating matrix segment 2 are all circular and have the same outer diameter. This facilitates assembly of the above structure within the wrapping layer 3.

[0081] It should be noted that micropores may exist inside the aerosol-generating matrix segment 2. For example, for the aerosol-generating matrix segment 2 of a particle assembly, the gaps between the particles constitute micropores. However, the airways described in the present disclosure are different from micropores. The airways described in the present disclosure are pores in a macroscopic sense, while micropores are pores in a microscopic sense. The projected area and length of the airways are much larger than those of the micropores. The airways are mainly formed by design and processing, such as by die processing. Therefore, the projected area and length of the airways can be changed according to design requirements, while the size of the micropores is determined by the gaps between the particles. For example, if the material is a granular material, the aerosol-generating matrix segment 2 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 of the material after the material feeding tube flows out of the die.

[0082] It should be noted that the aerosol generating matrix segment 2 is a particle complex, and micropores are formed between the particles of the particle complex, that is, the gaps between the particles constitute micropores, and the micropores are connected to form micro airways connected to the transverse airways 2a and the longitudinal airways 2b.

[0083] In the disclosed embodiment, the transverse air channel 2a, the longitudinal air channel 2b, and the micropores can all increase the surface area of ​​the aerosol generating matrix segment 2, facilitate heat transfer, and improve heating efficiency. When the dielectric material of the aerosol generating matrix segment 2 is heated, it releases aerosols, which are collected into the transverse air channel 2a and / or the longitudinal air channel 2b through the gaps between the wall materials or the micro-air channels. The aerosols released by the dielectric material exposed to the transverse air channel 2a (i.e., the dielectric material located on the inner wall surface of the transverse air channel 2a) can be directly released into the transverse air channel 2a, and the aerosols released by the dielectric material exposed to the longitudinal air channel 2b (i.e., the dielectric material located on the inner wall surface of the longitudinal air channel 2b) can be directly released into the longitudinal air channel 2b. The external airflow can enter the side channel 11b through the air holes 3a and the ventilation holes 11c and enter the aerosol generating matrix segment 2 through the longitudinal air channel 2b aligned therewith, and then diffuse to other longitudinal air channels 2b through the transverse air channel 2a. The airflow in the longitudinal air channel 2b is transported to the downstream end, i.e., the end where the functional segment 2 is located, under the action of the suction negative pressure.

[0084] Please refer to Figure 1. The external airflow can enter the side channel 11b through the air holes 3a and the ventilation holes 11c. The side channel 11b can provide more aerosol flow paths, reduce the suction resistance, and improve the aerosol extraction efficiency; due to the obstruction of the annular top wall 114, the external airflow will enter the longitudinal airway 2b along the longitudinal direction and diffuse, which can not only improve the uniformity of aerosol extraction, but also help to heat the external airflow, expand its volume, reduce the oxygen content, and improve the aerosol extraction rate; the external airflow can also diffuse through the transverse airway 2a to other longitudinal airways 2b connected to it, which is beneficial to heat transfer, improve heating efficiency, and improve aerosol extraction efficiency, and finally be transported to the downstream end where the functional section 2 is located under the action of the suction negative pressure.

[0085] Please refer to Figure 2. The external air flow can enter the side channel 11b through the air holes 3a and the ventilation holes 11c. Due to the obstruction of the first blocking member 4, the external air flow from the side channel 11b will enter the longitudinal airway 2b along the longitudinal direction and diffuse. The external air flow can also diffuse to other longitudinal airways 2b connected to it through the transverse airway 2a, and the aerosol generated by the medium material of the aerosol generating matrix segment 2 can be collected into the longitudinal airway 2b through the micro-airway and the transverse airway 2a, and finally transported to the downstream end where the functional segment 2 is located under the action of the suction negative pressure.

[0086] Referring to Figure 3 , external airflow can enter the side channel 11b through the air holes 3a and ventilation holes 11c. Due to the obstruction of the first blocking member 4 and the annular top wall 114, the external airflow from the side channel 11b will longitudinally enter the longitudinal airway 2b and diffuse. The external airflow can also diffuse through the transverse airway 2a to other longitudinal airways 2b connected thereto. The aerosol generated by the dielectric material of the aerosol-generating matrix segment 2 can be collected into the longitudinal airway 2b through the micro-airways and transverse airways 2a. Because the second blocking member 5 blocks the end face of the aerosol-generating matrix segment 2 longitudinally away from the cooling section 11, the entry of external airflow into the aerosol-generating matrix segment 2 from the end face of the aerosol-generating matrix segment 2 longitudinally away from the cooling section 11 can be reduced or even eliminated.

[0087] In one embodiment, the functional segment 1 and the aerosol-generating matrix segment 2 are both cylindrical, wherein the longitudinal direction is the axial direction of the functional segment 1 and the aerosol-generating matrix segment 2 or a direction parallel to the axial direction, and the longitudinal direction is perpendicular to the transverse direction. In other words, the filtration segment 12, the cooling segment 11, and the aerosol-generating matrix segment 2 are all cylindrical.

[0088] For example, in one embodiment, the filtration section 12, the cooling section 11, and the aerosol-generating matrix section 2 are coaxial. That is, the filtration section 12, the cooling section 11, and the aerosol-generating matrix section 2 are all cylindrical, and their central axes coincide.

[0089] In one embodiment, the aerosol-generating substrate segment 2 is a one-piece structure.

[0090] For example, the aerosol-generating matrix segment 2 can be made into an integral structure by injection molding, die casting, or extrusion. In this way, the aerosol-generating matrix segment 2 remains as a single piece during use, such as when heated for inhalation or after heating stops, and is less likely to disintegrate or fall off.

[0091] 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, is plasticized by heat and pushed toward the discharge port by the extrusion screw, and is formed into an aerosol-generating matrix segment 2 with a preset projected shape and corresponding pores through an extrusion mold such as a mouth mold.

[0092] The cooling materials used in the cooling section 11 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.

[0093] The filter material used in the filter section 12 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.

[0094] The materials of the cooling section 11 and the filtering section 12 can be the same or different.

[0095] In one embodiment, the aerosol-generating substrate segment 2 includes plant raw materials, auxiliary raw materials, smoke-generating agent raw materials, adhesive raw materials, and flavor raw materials.

[0096] The plant raw material is used to generate aerosols when heated. The auxiliary agent 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 flavor 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 flavor raw material can enhance the release of aroma during the inhalation process and improve the user experience. The auxiliary agent raw material can not only improve the fluidity of the mixed material, but also make the aerosol-generating matrix section 2 have a porous structure 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.

[0097] In one embodiment, the plant raw material is one or more combinations of crushed tobacco leaves, tobacco leaf fragments, tobacco stems, tobacco dust, and flavorful plants, resulting in powder. The plant raw material is the core source of flavor. Endogenous substances in the plant raw material can produce a physiological sense of satisfaction in the user. Endogenous substances, such as alkaloids, enter the human bloodstream and stimulate the pituitary gland to produce dopamine, thereby achieving a physiological sense of satisfaction.

[0098] In one embodiment, the auxiliary agent raw material can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. Inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth. Inorganic fillers can provide skeletal support for the plant material and also have micropores, which can increase the porosity of the aerosol-generating matrix segment 2, thereby improving the aerosol release rate.

[0099] Lubricants include one or more of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. Lubricants can increase the fluidity of the plant material powder, reduce friction between the plant material powders, and make the overall density of the plant material powder distribution more uniform. They can also reduce the pressure required during the extrusion process and reduce die wear.

[0100] Emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. Emulsifiers can, to a certain extent, slow down the loss of flavor substances during storage, increase the stability of flavor substances, and improve the sensory quality of the product.

[0101] 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, tributyrin); 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, tributyrin, lauryl acetate) or one or more combinations thereof.

[0102] In one embodiment, the binder material wets the interface of the component materials, resulting in close contact and intermolecular attraction, thereby bonding the component materials, such as powders and liquids. The binder material can be a natural plant extract, a non-ionically modified viscous polysaccharide, or a combination thereof, including tamarind polysaccharide, guar gum, and modified cellulose (e.g., carboxymethyl cellulose). The binder serves to bond the particles together, preventing them from loosening. Furthermore, it improves the water resistance of the aerosol-generating matrix segment 2 and is harmless to the human body.

[0103] In one embodiment, the flavoring raw materials are solid or liquid substances used to provide characteristic aromas, such as hay, roasted sweet, or nicotine. The flavoring raw materials may include one or more combinations of tobacco, aromatic plant extracts, extracts, essential oils, and absolutes. The flavoring raw materials may also include monomeric flavoring substances, such as one or more combinations of megastigmatrienone, neophytadiene, geraniol, and nerol.

[0104] In the description of the present disclosure, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", "in yet other embodiments", or "exemplary" etc. mean 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 disclosure. In the present disclosure, the schematic expressions of the above terms do 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 different embodiments or examples described in the present disclosure and the features of different embodiments or examples, unless they are mutually inconsistent.

[0105] The foregoing description is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure are intended to be within the scope of protection of the present disclosure.

Claims

1. An aerosol generating article comprising: A functional section, wherein the functional section includes a cooling section, wherein the cooling section is formed with a central channel and side channels, and the side channels are located outside the central channel; An aerosol generating matrix segment, wherein the functional segment is arranged at one end of the aerosol generating matrix segment along the longitudinal direction, the aerosol generating matrix segment forms a transverse airway extending along the transverse direction, and the central channel and the side channel are both connected to the aerosol generating matrix segment at one end close to the aerosol generating matrix segment.

2. An aerosol-generating article according to claim 1, wherein The aerosol generating substrate segment is formed with a longitudinal air channel extending in the longitudinal direction, at least one end of the longitudinal air channel passes through the end surface of the aerosol generating substrate segment in the longitudinal direction, and each of the transverse air channels is connected to at least one of the longitudinal air channels.

3. An aerosol-generating article according to claim 2, wherein The central channel and the side channel are respectively connected to at least one of the longitudinal air channels at one end close to the aerosol generating substrate segment.

4. The aerosol-generating article of claim 1 , wherein: There are multiple side channels, and the multiple side channels are distributed at intervals along the circumference of the central channel.

5. The aerosol-generating article of claim 1 , wherein: The side channel is formed inside the temperature reduction section.

6. An aerosol-generating article according to claim 5, wherein The cooling section includes an outer peripheral layer, an inner peripheral layer and convex ridges, the outer peripheral layer is located laterally outside the inner peripheral layer and both are in a circular shape, the inner peripheral layer defines the central channel, and the convex ridges are arranged between the outer peripheral layer and the inner peripheral layer and jointly define the side channel.

7. An aerosol-generating article according to claim 6, wherein The temperature-lowering section comprises an annular top wall, and the annular top wall seals one end of the inner peripheral layer and the outer peripheral layer away from the aerosol-generating substrate section.

8. The aerosol-generating article of claim 1, wherein: The cross-sectional area of ​​the side channel is 0.01 mm 2 Up to 0.5mm 2 .

9. The aerosol-generating article of claim 1 , wherein: The central channel and the side channels both pass through the two end faces of the cooling section along the longitudinal direction; the aerosol generating product includes a first blocking piece, which is arranged on the end face of the cooling section away from the aerosol generating matrix section along the longitudinal direction, and the first blocking piece is formed with a flow port connected to the central channel, and the first blocking piece blocks the port of the side channel away from the aerosol generating matrix section along the longitudinal direction.

10. The aerosol-generating article of claim 1, wherein: The aerosol generating product comprises a wrapping layer, the outer peripheral surface of the aerosol generating substrate segment 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 cooling segment, and the pores are connected with the side channel.

11. An aerosol-generating article according to claim 10, wherein The number of the pores is 1 to 10; and / or, The hydraulic diameter of the pores is 0.1 mm to 2.0 mm.

12. An aerosol-generating article according to claim 10, wherein The aerosol generating article comprises a second blocking member, which blocks an end surface of the aerosol generating substrate segment away from the cooling segment in the longitudinal direction.

13. An aerosol-generating article according to claim 1, wherein The side channel is formed on the outer peripheral surface of the temperature reduction section.

14. An aerosol-generating article according to claim 1, wherein The number of the transverse air channels is multiple, and the multiple transverse air channels are distributed at intervals along the circumference of the aerosol generating substrate segment.

15. An aerosol-generating article according to claim 1, wherein The functional section comprises a filtering section, and the filtering section is arranged at one end of the cooling section away from the aerosol generating substrate section in the longitudinal direction.

16. An aerosol-generating article according to claim 1, wherein The functional segment and the aerosol generating matrix segment are both cylindrical, wherein the longitudinal direction is the axial direction of the functional segment and the aerosol generating matrix segment 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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