Aerosol-generating article

Abstract

The utility model provides an aerosol generating article, it includes: aerosol generating base and shell, aerosol generating base has a plurality of air passages on it, the shell has fixed section and upstream section, aerosol generating base sets up in fixed section, the bottom of upstream section is closed, and the cavity is formed between aerosol generating base and the bottom of upstream section, one end of cavity away from aerosol generating base is provided with air inlet and the bulge that protrudes to fixed section, air inlet is communicated with air passage, the bulge is spaced apart from aerosol generating base along the axial direction of shell, to control the uneven distribution of the flow of a plurality of air passages in aerosol generating base. By setting the bulge protruding to fixed section at the bottom of upstream section, the airflow in the air passage entering the lower temperature area is blocked, when the user takes the first puff, most of the airflow enters the air passage in the higher temperature area, and more smoke is obtained, which improves the user's experience.

Description

Technical Field

[0001] This utility model relates to the field of electronic atomization technology, specifically to an aerosol generating product. Background Technology

[0002] In related technologies, the smoke extraction time for cigarettes used in heated tobacco products is at least 15 seconds when heated circumferentially, while the smoke extraction time for those heated centrally reaches 10 seconds. Compared to central heating, circumferential heating is less effective at producing smoke quickly, especially during the user's first puff, as most of the airflow passes through the low-temperature zone (smoke-free zone), making it difficult to produce smoke on the first puff and thus affecting the user experience. Utility Model Content

[0003] In view of this, the present invention aims to provide an aerosol-generating product to solve the problem of difficulty in quickly producing smoke during circumferential heating.

[0004] To solve the above-mentioned technical problems, this utility model provides an aerosol generating article, comprising: The aerosol generation matrix has multiple air channels; The outer shell has a fixed section and an upstream section; the aerosol generating matrix is ​​disposed in the fixed section, the bottom of the upstream section is closed, and a cavity is formed between the aerosol generating matrix and the bottom of the upstream section. An air inlet and a protrusion protruding towards the fixed section are provided at the end of the cavity away from the aerosol generating matrix. The air inlet is connected to the air passage; The protrusions are spaced apart from the aerosol generating matrix along the axial direction of the outer shell to control the uneven distribution of flow rate in the multiple air channels in the aerosol generating matrix.

[0005] In one embodiment, the aerosol generating matrix has a first air passage and a second air passage extending along its own axial direction; the size of the first air passage is larger than the size of the second air passage, and the first air passage is located closer to the center of the aerosol generating matrix along its own radial direction than the second air passage. The protrusion is positioned to match the position of the first airway.

[0006] In one embodiment, the aerosol generating matrix has multiple second air channels, and the bottom of the upstream section is provided with multiple air inlets; Multiple second air channels are arranged circumferentially around the aerosol generating matrix outside the first air channel; The plurality of air inlets are arranged circumferentially around the outer periphery of the protrusion and / or on the sidewall of the protrusion.

[0007] In one embodiment, the ratio of the cross-sectional area S1 of the first airway to the total cross-sectional area S of all airways in the aerosol generating matrix satisfies: 0.4 ≤ S1 : S ≤ 0.6.

[0008] In one embodiment, the ratio of the airflow rate V1 of the first airway to the total airflow rate V in the aerosol generating matrix satisfies: V1:V≤0.45.

[0009] In one embodiment, the distance L between the protrusion and the aerosol generating matrix satisfies: 0 < L ≤ 0.3 mm.

[0010] In one embodiment, the aerosol generating article includes a filter section, the filter section including a filter element and a first shell paper; The filter element is disposed in the first shell paper, the first shell paper abuts against the outer shell, the filter element is spaced apart from the aerosol generating matrix, and an axial cavity is formed between the filter element and the aerosol generating matrix.

[0011] In one embodiment, the aerosol-generating article includes a second outer shell, which is at least fitted over the outer shell and a portion of the first outer shell.

[0012] In one embodiment, the cavity is formed by the first shell paper and / or outer shell surrounding the filter element circumferentially.

[0013] In one embodiment, the upstream section is narrower radially than the fixed section in the outer shell, and a stepped surface is formed at the connection between the upstream section and the fixed section, with the end of the aerosol generating matrix abutting against the stepped surface.

[0014] In one embodiment, the protrusion is cylindrical or frustum-shaped, and the ratio of the maximum diameter D1 of the protrusion to the diameter D of the outer shell satisfies: 0.2≤D1:D≤0.4.

[0015] In one embodiment, the protrusion is integrally formed with the housing, and / or the housing is made of a metallic material.

[0016] In one embodiment, the diameter D2 of the air inlet satisfies: 0.2mm ≤ D2 ≤ 0.5mm; the total cross-sectional area S2 of all the air inlets satisfies: 0.8mm. 2 ≤S2≤3.14mm 2 .

[0017] In one embodiment, the aerosol generating matrix is ​​a one-piece solid matrix.

[0018] Compared with existing cigarette structures, the aerosol-generated product provided in this embodiment of the invention has the following advantages: This utility model provides an aerosol generating article, comprising: an aerosol generating matrix and a shell. The aerosol generating matrix has multiple air channels. The shell has a fixed section and an upstream section. The aerosol generating matrix is ​​disposed in the fixed section. The bottom of the upstream section is closed, and a cavity is formed between the aerosol generating matrix and the bottom of the upstream section. An air inlet and a protrusion protruding towards the fixed section are provided at the end of the cavity away from the aerosol generating matrix. The air inlet communicates with the air channels. The protrusion is spaced apart from the aerosol generating matrix along the axial direction of the shell to control the flow distribution of the multiple air channels in the aerosol generating matrix to be at least partially uneven. In the initial stage of circumferential heating of the aerosol generating matrix, the heat is unevenly distributed on the aerosol generating matrix, and there is a certain temperature difference between different areas. Air channels are provided at both the edge and the center of the aerosol generating matrix. The smoke emission rate in the higher temperature area of ​​the aerosol generating matrix is ​​faster than that in the lower temperature area. Thus, by setting a protrusion at the bottom of the upstream section that protrudes towards the fixed section, this application can block part of the airflow entering the airway in the lower temperature area, so that the airflow in the lower temperature area is lower than the airflow in the higher temperature area. When the user takes the first inhale, most of the airflow enters the airway in the higher temperature area, thereby obtaining more smoke and improving the user's experience. At the same time, it also solves the problem that it is difficult to produce smoke quickly when circumferentially heated. Attached Figure Description

[0019] Figure 1 The diagram shown is a schematic diagram of the heat transfer process of aerosol-generated matrix during circumferential heating according to an embodiment of this utility model.

[0020] Figure 2 The diagram shows a structural schematic of an aerosol-generated product without protrusions in the related technology.

[0021] Figure 3 As shown Figure 2 A diagram showing the velocity distribution of air channels in the structure of aerosol-generated products.

[0022] Figure 4 The diagram shown is a schematic diagram of the external structure of the outer shell provided in an embodiment of this utility model.

[0023] Figure 5 The diagram shown is a schematic diagram of the internal structure of the outer shell provided in an embodiment of this utility model.

[0024] Figure 6 The diagram shown is a schematic diagram of the structure of the aerosol generation matrix provided in an embodiment of this utility model.

[0025] Figure 7 The diagram shown is a schematic of an aerosol generating matrix provided in an embodiment of the present invention disposed in the outer shell.

[0026] Figure 8 The diagram shown is a structural schematic of an aerosol-generating product with protrusions provided in an embodiment of this utility model.

[0027] Figure 9 The diagram shown is a schematic representation of the distribution of the air passage and air inlet provided in an embodiment of this utility model.

[0028] Figure 10 As shown Figure 9 A diagram showing the velocity distribution of air channels in the structure of aerosol-generated products.

[0029] Figure 11 The diagram shown is an exploded view of the structure of the aerosol-generated product provided in an embodiment of this utility model.

[0030] Figure 12 The image shown is a cross-sectional view of the aerosol-generated product provided in an embodiment of this utility model.

[0031] Figure 13 The diagram shown is a structural schematic of the first aerosol-generating product provided in this embodiment of the present invention.

[0032] Figure 14 The diagram shown is a structural schematic of the second aerosol-generating product provided in this embodiment of the present invention.

[0033] The explanations of the reference numerals in the accompanying drawings are as follows: 1-Smoke outlet section; 10-Aerosol generation matrix; 11-Outer shell; 100-First air passage; 101-Second air passage; 110-Fixed section; 111-Upstream section; 112-Air inlet; 113-Protrusion; 2-Filter section; 20-Filter element; 21-First shell paper; 3-Second shell paper; 4-Cavity; 5-Step surface; 6-Cavity body. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] As will be understood by those skilled in the art, in related technologies, when a heating element is used to circumferentially heat the aerosol-generating matrix in an aerosol-generating article, heat is transferred from the edge region to the center region of the aerosol-generating matrix. Please refer to [reference needed]. Figure 1 , Figure 1 (a) shows the heat distribution on the surface of the aerosol-forming matrix 3 seconds after heating; Figure 1 (b) shows the heat distribution on the surface of the aerosol-forming matrix 6 seconds after heating; Figure 1 (c) represents the heat distribution on the surface of the aerosol-generating matrix 8 seconds after heating; Figure 1 (d) represents the heat distribution on the surface of the aerosol-generating matrix 10 seconds after heating. In the initial heating phase, the temperature at the edge of the aerosol-generating matrix can rapidly rise to approximately 200°C. Therefore, the edge region of the aerosol-generating matrix begins to release smoke earlier than the central region. However, as... Figure 2 As shown, the airways in the aerosol generating matrix 10 are unevenly distributed, with the airway size in the central region being larger than that in the peripheral region. When the user takes their first inhalation, the airflow rate in the central region is significantly greater than that in the peripheral region (see reference). Figure 3(Simulation results are shown in the original text). However, at this point, the temperature in the central region of the aerosol generating matrix 10 has not yet reached a temperature sufficient to produce smoke. Therefore, users often inhale insufficient smoke on their first inhalation, thus affecting the user experience. This problem is particularly pronounced in one-piece molded solid aerosol generating matrices. Even if the air channels in the aerosol generating matrix are evenly distributed and all channels are of equal size, and the flow rate in each channel is roughly equal when the user takes their first inhalation, a large amount of airflow will still pass through the central region of the aerosol generating matrix, still resulting in insufficient smoke and affecting the user experience.

[0038] Based on this, please refer to Figures 4-10 This utility model provides an aerosol generating article, including: an aerosol generating matrix 10 and a shell 11; the aerosol generating matrix 10 has multiple air channels; the shell 11 has a fixed section 110 and an upstream section 111; the aerosol generating matrix 10 is disposed in the fixed section 110, and the bottom of the upstream section 111 is provided with an air inlet 112 and a protrusion 113 protruding towards the fixed section 110; the air inlet 112 and the air channels together form a smoke outlet channel; the protrusion 113 is spaced apart from the aerosol generating matrix 10 along the axial direction of the shell 11 to adjust the flow distribution of the multiple air channels in the aerosol generating matrix 10. In this embodiment, a protrusion 113 is provided at the bottom of the outer shell 11, corresponding to the lower temperature area on the aerosol generating matrix 10. The protrusion 113 is positioned close to the aerosol generating matrix 10, which can block most of the airflow from entering the air passage located in the lower temperature area of ​​the aerosol generating matrix 10. This allows most of the airflow to enter the air passage located in the higher temperature area of ​​the aerosol generating matrix 10. The higher temperature area on the aerosol generating matrix 10 can reach the smoke emission temperature in the initial heating stage and release sufficient smoke. Thus, the user can inhale the smoke released from the higher temperature area on the first puff, without affecting the experience due to insufficient smoke, thereby solving the problem of difficulty in smoke emission during circumferential heating. Simultaneously, the outer shell 11 in this embodiment is made of a material with high heat transfer rate, so heat transfer is faster within the same heating time. The higher temperature area on the aerosol generating matrix 10 can quickly reach the smoke emission temperature and generate more smoke, thereby shortening the preheating cycle and achieving rapid smoke emission on the first puff.

[0039] As an example, when a user takes their first puff, they inhale into the atomizing device through the mouthpiece, creating an airflow inside the device. The airflow then enters the housing 11 through the air inlet 112 at the bottom of the upstream section 111. After being blocked by the protrusion 113, most of the airflow enters the aerosol generating matrix 10 through the air passage in the higher temperature area of ​​the aerosol generating matrix 10, thus carrying out the smoke generated in the higher temperature area of ​​the aerosol generating matrix 10. Finally, the smoke enters the user's mouth through the outlet channel, completing one puff.

[0040] Specifically, in this embodiment, the heating element heats uniformly along the circumference. The heat is conducted through the outer shell 11 to the edge region of the aerosol generating matrix 10, and then transferred from the edge region to the central region. Therefore, the higher temperature region is the edge region of the aerosol generating matrix 10, and the lower temperature region is the central region of the aerosol generating matrix 10. At this time, the protrusion 113 can be arranged close to the radial center of the outer shell 11 to match the central region of the aerosol generating matrix 10.

[0041] In some other embodiments, the temperature on the aerosol generating matrix 10 is affected by the heating method of the circumferentially heated heating element. If the heating element heats unevenly along the circumference, for example, if the heating element is open-ring shaped and only heats a portion of the outer shell 11, then the higher temperature region is only a portion of the edge region of the aerosol generating matrix 10, while the lower temperature region is the central region and the remaining edge region of the aerosol generating matrix 10. In this case, the protrusion 113 can be located at the radial center of the outer shell 11, close to the remaining edge region, to match the lower temperature region on the aerosol generating matrix 10.

[0042] In this embodiment, the aerosol generating matrix 10 is a one-piece solid matrix, which can be a solid whole made by mixing nicotine salts, tobacco raw materials or tobacco extracts with other excipients and then processing them through processes such as extrusion, injection molding, and drying. The one-piece solid matrix has stable quality and good consistency; moreover, by precisely controlling the heating temperature, the matrix can ensure that the tobacco releases just enough nicotine and flavor substances, but not enough to burn, thus effectively reducing the various harmful chemical substances produced by high-temperature combustion.

[0043] Please refer to Figures 4 to 5 Optionally, the protrusion 113 is cylindrical, and the sidewalls of the cylindrical protrusion 113 are curved, which can better facilitate the deflection of airflow. Preferably, the protrusion 113 has an arc-shaped chamfer on the side near the aerosol generating matrix 10 to make the airflow smoother. In other embodiments, the protrusion 113 may also be frustum-shaped, and the diameter of the protrusion 113 may gradually decrease in the axial direction. Similarly, an arc-shaped chamfer may also be provided on the side of the protrusion 113 near the aerosol generating matrix 10; the protrusion 113 may also be prismatic, and arc-shaped chamfers may be provided at the intersection of the two sidewalls of the prism and on the side near the aerosol generating matrix 10 to facilitate the flow of airflow.

[0044] As an optional embodiment, the size of the protrusion 113 should be adapted to or slightly larger than the airway size of the central region of the aerosol generating matrix 10. In this way, the protrusion 113 can block the airflow entering the airway in the central region, reducing the amount of airflow entering the central region of the aerosol generating matrix 10 before smoke is emitted, ensuring that most of the airflow enters the airway in the edge region of the aerosol generating matrix 10, thereby ensuring that the user receives sufficient smoke and improving the user experience.

[0045] Exemplary, such as Figure 7 As shown, the maximum diameter of the protrusion 113 is D1, and the diameter of the outer shell 11 is D, satisfying the following condition: 0.2 ≤ D1 : D ≤ 0.4. Optionally, the diameter D of the outer shell 11 can be in the range of 6mm to 12mm. For example, the diameter D of the outer shell 11 can be 6mm, 6.8mm, 7.6mm, 8mm, 10.5mm, 11.2mm, or 12mm; the ratio between the diameter D of the outer shell 11 and the maximum diameter D1 of the protrusion 113 can be 0.2, 0.25, 0.3, 0.33, 0.35, or 0.4. Those skilled in the art can reasonably configure the diameter of the protrusion 113 in conjunction with the airway dimensions on the aerosol generating matrix 10, and this embodiment does not impose any limitations on this.

[0046] Please continue to refer to this. Figures 4-5 The upstream section 111 narrows radially from the fixed section 110 along the outer shell 11, and a stepped surface 5 is formed at the connection between the upstream section 111 and the fixed section 110. The end of the aerosol generating matrix 10 abuts against the stepped surface 5. As those skilled in the art will understand, the aerosol generating matrix 10 will gradually shrink during the heating and combustion process to form smoke. Thus, the narrowing of the upstream section 111 from the fixed section 110 provides a bearing surface (i.e., the stepped surface 5) for the aerosol generating matrix 10, preventing the aerosol generating matrix 10 from falling off the outer shell 11 after heating and shrinking.

[0047] In some other embodiments, the upstream section 111 may not be narrowed, but instead an inwardly protruding support member (not shown in the figure) may be provided at the connection position between the fixed section 110 and the upstream section 111. The end of the aerosol generating matrix 10 abuts against the support member to provide load-bearing force to the heated and shrunken aerosol generating matrix 10. This embodiment does not limit this.

[0048] Similarly, the radial dimension of the fixed section 110 matches the diameter of the aerosol generating matrix 10. The sidewall of the aerosol generating matrix 10 abuts against the sidewall of the fixed section 110. In the initial stage of heating, before the aerosol generating matrix 10 shrinks, the connection between the aerosol generating matrix 10 and the fixed section 110 mainly relies on the friction between the aerosol generating matrix 10 and the sidewall of the fixed section 110. After the aerosol generating matrix 10 shrinks due to heating, the abutment between the aerosol generating matrix 10 and the sidewall of the fixed section 110 is released. At this time, the connection between the aerosol generating matrix 10 and the fixed section 110 mainly relies on the bearing capacity provided by the step surface 5 or the bearing member.

[0049] Furthermore, a cavity 6 is formed between the aerosol generating matrix 10 and the bottom of the upstream section 111. The cavity 6 is used to accommodate a portion of the condensate and residue that falls during combustion. Regardless of... Figures 4-5 As shown in the example, the upstream section 111 is narrower than the fixed section 110. A protruding support member is directly provided at the connection between the upstream section 111 and the fixed section 110, and a cavity 6 can be formed between the aerosol generating matrix 10 and the bottom of the upstream section 111. This cavity 6 prevents the leakage of residue from the aerosol generating matrix 10 during heating. Simultaneously, after heating stops, since the thermal conductivity of the outer shell 11 is generally greater than that of the aerosol generating matrix 10, the cooling rate of the outer shell 11 is faster than that of the aerosol generating matrix 10. At this time, a certain amount of condensate will form inside the outer shell 11. Due to capillary action, and given the relatively small size of the air inlet 112, leakage of condensate through the air inlet 112 can be prevented.

[0050] Please refer to Figure 6 The aerosol generating matrix 10 has a first airway 100 and a second airway 101 extending along its own axial direction. The size of the first airway 100 is larger than that of the second airway 101, and the first airway 100 is positioned closer to the center of the aerosol generating matrix 10 along its own radial direction than the second airway 101. The position of the protrusion 113 matches the position of the first airway 100. In this way, the protrusion 113 can block most of the airflow from entering the first airway 100, thereby reducing the proportion of flow in the first airway 100 of the aerosol generating matrix 10, allowing more airflow to flow from the second airway 101 located in the edge region of the aerosol generating matrix 10, thereby increasing the amount of vapor inhaled by the user in the first puff.

[0051] As an example, in this embodiment, the cross-sectional area of ​​the first airway 100 is S1, and the sum of the cross-sectional areas of all airways in the aerosol generating matrix 10 is S, then the following conditions are met: 0.4 ≤ S1 : S ≤ 0.6. For example, please refer to... Figure 9The cross-sectional radius of the first airway 100 can be 2 mm, and the cross-sectional radius of the second airway 101 can be 0.9 mm. In this case, the ratio of the cross-sectional area S1 of the first airway 100 to the total cross-sectional area S of all airways in the aerosol generating matrix 10 is approximately 0.45. However, in cases where... Figure 9 In the example shown, the diameter of the aerosol-generated article is 7.2 mm, while in this embodiment, a second shell paper 3 (such as...) is also provided on the outside of the outer shell 11. Figure 12 As shown in the figure, the diameter of the second shell paper 3 is 0.1 mm, therefore, the diameter of the outer shell 11 is 7 mm. In some other embodiments, the ratio between the two can also be 0.4, 0.5, 0.52, 0.55, or 0.6. Those skilled in the art can configure the size of the airway according to the different materials of the aerosol generating matrix 10.

[0052] For further details, please refer to... Figures 4-6 The aerosol generating matrix 10 has multiple second air channels 101, and multiple air inlets 112 are provided at the bottom of the upstream section 111; the multiple second air channels 101 are arranged circumferentially around the aerosol generating matrix 10 on the periphery of the first air channel 100; the multiple air inlets 112 are arranged circumferentially along the outer shell 11 on the periphery of the protrusion 113 and / or on the sidewall of the protrusion 113. It should be noted that, in this embodiment, the second air channels 101 are uniformly arranged around the periphery of the first air channel 100; the air inlets 112 and the second air channels 101 are not in a one-to-one correspondence, but rather... Figure 9 For example, the size of the air inlet 112 is smaller than the cross-sectional size of the second air passage 101, and the distribution density of the air inlet 112 is greater than the distribution density of the second air passage 101. The projections of the air inlet 112 and the second air passage 101 along the axial direction of the aerosol-generated product can partially overlap. When the number of air inlets 112 is an integer multiple of the number of second air passages 101, the projection of the second air passage 101 can be positioned at the center of the corresponding multiple of the number of air inlets 112 in the circumferential direction.

[0053] Optional, in Figure 6 In the illustrated example, six identical second air channels 101 are provided on the aerosol generating matrix 10, and are evenly arranged around the periphery of the first air channel 100 in the circumferential direction of the aerosol generating matrix 10. In other embodiments, other numbers of second air channels 101 may be provided on the aerosol generating matrix 10, and the cross-sectional dimensions of each second air channel 101 may not be exactly the same. Those skilled in the art can reasonably arrange the opening positions of the second air channels 101 according to the material of the aerosol generating matrix 10 and the arrangement of the heating element. For example, a denser arrangement of the second air channels 101 can be provided on the side closer to the heating element or on the side with higher heating power of the heating element, so that the smoke output of the aerosol generating matrix 10 meets the requirements.

[0054] In this embodiment, both the first airway 100 and the second airway 101 penetrate the aerosol generating matrix 10 along the axial direction of the aerosol generating matrix 10. In other embodiments, the first airway 100 and the second airway 101 may also be arranged in a direction that is at an angle to the axial direction of the aerosol generating matrix 10. The first airway 100 and the second airway 101 may also be configured as arc-shaped airways or spiral airways. This embodiment does not limit this.

[0055] In other embodiments, please refer to Figure 4 and Figure 9 The bottom of the upstream section 111 may be provided with 12 air inlets 112, which are evenly distributed around the periphery of the protrusion 113. In some embodiments, the air inlets 112 may also be formed on the side wall of the protrusion 113 to achieve lateral air intake. In this way, the air inlets 112 can be at a certain height relative to the bottom of the upstream section 111, which can increase the leak-proof effect.

[0056] In this embodiment, the diameter of the air inlet 112 is D2, which satisfies: 0.2mm ≤ D2 ≤ 0.5mm; the total cross-sectional area of ​​all air inlets 112 is S2, which satisfies: 0.8mm 2 ≤S2≤3.14mm 2 For example, the diameter of the air inlet 112 can be 0.2mm, 0.22mm, 0.3mm, 0.36mm, 0.4mm, 0.45mm, or 0.5mm; the number of air inlets 112 can be between 5 and 15 to meet the requirements of the corresponding total cross-sectional area.

[0057] Optionally, the dimensions of the multiple air inlets 112 can also be different. For example, in the relatively dense area of ​​the second air passage 101, a denser air inlet 112 or a larger air inlet 112 can be provided to cooperate with the second air passage 101 and achieve control of the air passage flow in different areas.

[0058] exist Figure 7In the illustrated example, the protrusion 113 and the aerosol generating matrix 10 are spaced apart along the axial direction of the aerosol generating article. The distance between the protrusion 113 and the aerosol generating matrix 10 along the axial direction of the aerosol generating article is L, satisfying: 0 < L ≤ 0.3 mm. It should be noted that as the distance between the protrusion 113 and the aerosol generating matrix 10 changes, the airflow rate in each air passage on the aerosol generating matrix 10 also varies considerably. Those skilled in the art will understand that in the initial stage of heating, the temperature of the edge region of the aerosol generating matrix 10 increases, resulting in a large amount of smoke generated in the edge region of the aerosol generating matrix 10. As heating continues, the aerosol generating matrix 10 gradually contracts in both the axial and radial directions of the aerosol generating article, thereby causing the distance between the protrusion 113 and the aerosol generating matrix 10 to continue to increase. The shrinkage rate of the integrally formed aerosol generating matrix 10 after heating is 5%~20%. Therefore, the distance between the heated protrusion 113 and the aerosol generating matrix 10 will increase by about 0.2mm. After adding the initial distance, the distance between the heated protrusion 113 and the aerosol generating matrix 10 may reach 0.4mm, 0.5mm or even larger. However, at this time, due to the continuous heating, the temperature of the central area of ​​the aerosol generating matrix 10 has also risen to a temperature that can produce smoke. At this time, the regulating effect of the protrusion 113 on the proportion of airflow entering the central area gradually decreases, and more airflow enters the central area. The smoke brought out by the air passages in the central area or the edge area is sufficient to meet the user's needs.

[0059] The following is based on Figures 8-10 For example, optionally, the diameter of the air inlet 112 on the outer shell 11 is 0.45 mm, the diameter of the first air passage 100 is 2 mm, the dimensions of the multiple second air passages 101 are all the same, 0.9 mm, the diameter of the fixed section 110 is 6.8 mm, the maximum diameter of the protrusion 113 is 2.7 mm, and the axial dimension of the cavity 6 in the aerosol generating article is 2 mm. In the aerosol generating article with the above dimensions, the influence of the distance between the protrusion 113 and the aerosol generating matrix 10 on the airflow rate in each air passage is simulated. The simulation results are as follows: exist Figure 9 In the simulation, the airways in the aerosol generating matrix 10 include a first airway M located in the central region, and six second airways 101 of the same size surrounding the first airway M, namely B1, B2, B3, B4, B5 and B6, where V1 represents the airflow rate of the first airway 100 and V represents the total airflow rate in all aerosol generating matrices 10. The simulation results are shown in the table below.

[0060] As shown in the table above, when the interval between the protrusion 113 and the aerosol generating matrix 10 is 0.1 mm, 0.2 mm, and 0.3 mm, the ratio between the airflow rate V1 of the first airway 100 and the total airflow rate V in the aerosol generating matrix 10 satisfies V1:V ≤ 0.45. Furthermore, as the heating process continues, the aerosol generating matrix 10 continuously shrinks, and when the interval between the protrusion 113 and the aerosol generating matrix 10 gradually increases to 0.4 mm and 0.5 mm, V1:V gradually rises and exceeds 0.45, gradually approaching the airflow distribution without the protrusion 113. In this embodiment, regarding the suction cycle of the aerosol generating product, in the initial stage of heating, more airflow flows into the second airway 101, carrying away the smoke generated in the edge area; as heating continues, the distance between the protrusion 113 and the aerosol generating matrix 10 gradually increases, and more airflow gradually enters the first airway 100 to carry away the smoke generated in the central area. Thus, by setting the interval between the protrusion 113 and the aerosol generating matrix 10 to 0.1mm-0.3mm, the gas flow rate in the first air passage 100 can be significantly reduced. In the initial stage of circumferential heating, the gas flow rate in the second air passage 101 can be increased, thereby blowing out more smoke.

[0061] In this exemplary embodiment, the protrusion 113 is integrally formed with the outer shell 11, and / or the outer shell 11 is made of a metallic material. The protrusion 113 and the outer shell 11 can be formed by metal stamping. The thickness of the outer shell 11 can be 0.1 mm to 0.2 mm, and the height of the protrusion 113 along the axial direction of the aerosol-generating article can be 1 mm to 3 mm. Those skilled in the art will understand that the heating element needs to transfer heat to the aerosol-generating matrix 10 through the outer shell 11. Preferably, the outer shell 11 is made of a material with high thermal conductivity, such as metallic materials (specifically aluminum, magnesium, etc.), non-metallic materials (specifically graphene, diamond, etc.), or ceramic materials (specifically aluminum nitride, silicon nitride, etc.). This embodiment does not limit this.

[0062] Please refer to Figures 11-14 In this embodiment, the aerosol generating product includes an exhaust section 1 and a filter section 2 connected to each other. The outer shell 11 and the aerosol generating matrix 10 are both disposed in the exhaust section 1. The filter section 2 includes a filter element 20 and a first shell paper 21. The filter element 20 is disposed in the first shell paper 21, and the first shell paper 21 abuts against the outer shell 11. The filter element 20 and the aerosol generating matrix 10 are spaced apart, and a cavity 4 is formed axially between the filter element 20 and the aerosol generating matrix 10. The cavity 4 can prevent the filter element 20 from contacting the heated exhaust section 1, because the exhaust section 1 has a high temperature during use. If the selected filter element 20 is not heat-resistant, it will easily produce a burnt taste, affecting the taste of the smoke. At the same time, the cavity 4 can also allow the smoke to mix thoroughly in it, thereby improving the taste of the smoke.

[0063] Furthermore, in Figure 12 In the illustrated embodiment, the cavities 4 are all located on the side of the filter section 2 near the smoke outlet section 1. Since the outer shell 11 is made of metal, its temperature is relatively high during the heating process. The fact that the cavities 4 are all located on the side of the filter section 2 near the smoke outlet can completely avoid the possibility of the filter element 20 coming into contact with the outer shell 11, and thus will not produce a burnt taste that affects the taste.

[0064] Of course, in some other embodiments, the cavity 4 may also be located on the side of the smoke outlet section 1 near the filter section 2, or the cavity 4 may be partially located in the smoke outlet section 1 and partially located in the filter section 2. This embodiment does not limit this.

[0065] Specifically, in this embodiment, the aerosol generating matrix 10 is a solid smoke-generating material, and the filter element 20 can be made of materials such as cellulose acetate, polylactic acid / starch-based bio-fiber, polypropylene yarn (polypropylene fiber), degreased cotton yarn, or nano-sponge.

[0066] Please continue to refer to this. Figures 12-14 The aerosol generating article includes a second shell paper 3, which is at least fitted over the outer shell 11 and a portion of the first shell paper 21. Thus, compared to related technologies that require a multi-segment structure to form the aerosol generating article, the aerosol generating article provided in this embodiment only needs to have two segments: a smoke outlet segment 1 and a filter segment 2. This reduces the requirements for the splicing process, thereby improving production efficiency and reducing production costs.

[0067] In this embodiment, the first outer shell 21 abuts against the outer shell 11, and the second outer shell 3 covers the outer shell 11 and at least part of the first outer shell 21, ultimately forming a complete aerosol-generating product structure. Figures 12-13 As shown, the second outer shell 3 can cover the outside of the outer shell 11 and part of the first outer shell 21, forming a joint section between the first outer shell 21 and the second outer shell 3 on the outer surface of the cavity 4 to ensure the corresponding connection strength; as Figure 14 As shown, the second outer shell 3 can also completely cover the outside of the outer shell 11 and the first outer shell 21.

[0068] Specifically, the thickness of the first outer paper 21 can be greater than the thickness of the second outer paper 3 to improve the strength of the filter section 2 while reducing the overall size of the aerosol-generating product. In this embodiment, the first outer paper 21 and the second outer paper 3 can be environmentally friendly paper tubes, bio-based materials (such as polylactic acid PLA), or other innovative materials (e.g., shell paper). In some other embodiments, the thickness of the first outer paper 21 can be equal to the thickness of the second outer paper 3, or the thickness of the first outer paper 21 can be less than the thickness of the second outer paper 3. It should be noted that the thickness of the first outer paper 21 and the second outer paper 3 mentioned above refers to the radial dimension of the first outer paper 21 and the second outer paper 3 along the aerosol-generating product.

[0069] In an optional embodiment, the length of cavity 4 along the axial direction of the aerosol generating article is L1, and the axial length of the aerosol generating article is L3, satisfying 0 < L1 : L3 < 0.3; the length of filter section 2 along the axial direction of the aerosol generating article is L2, satisfying L2 ≥ 20 mm. Specifically, the axial length L3 of the aerosol generating article can range from 40 mm to 100 mm, for example: 40 mm, 48 mm, 56 mm, 66 mm, 76 mm, 85 mm, 93 mm, 100 mm. Therefore, the value of L1 can be determined based on L, for example, 25 mm, 20 mm, 14 mm, 13 mm, 12.5 mm, 11.8 mm, 10 mm, etc.; the value of L2 can be, for example, 20 mm, 22 mm, 23 mm, 24.6 mm, 25 mm, etc.

[0070] Exemplary, the cavity 4 can be formed by the first outer paper 21 and / or the outer shell 11 surrounding the filter element 20 circumferentially. That is, the cavity 4 can be formed by a single tubular structure, whether the first outer paper 21 is formed alone, the outer shell 11 is formed alone, or the first outer paper 21 and the outer shell 11 are formed together. Alternatively, the outer surface of the first outer paper 21 has filter material, and the cavity 4 can also be formed by combining the first outer paper 21 with filter material. For example, the first outer paper 21 is made of filter material, or a layer of filter material is wrapped around the outer surface of the first outer paper 21 to further purify any leaked smoke.

[0071] To address the aforementioned technical problems, this utility model embodiment also provides an atomizing device, including a heating element. In use, the aerosol generating product is loaded into the atomizing device, and the heating element at least partially surrounds the outer shell 11 to transfer heat to the aerosol generating matrix 10 through the outer shell 11. By using the aforementioned aerosol generating product, a protrusion 113 protruding towards the aerosol generating matrix 10 is provided at the bottom of the upstream section 111, thereby blocking part of the airflow entering the lower temperature region of the aerosol generating matrix 10. This ensures that the airflow in the higher temperature region of the aerosol generating matrix 10 is greater than the airflow in the lower temperature region, guaranteeing that the airflow can expel the smoke generated in the higher temperature region of the aerosol generating matrix 10, improving the user experience, and also solving the problem of difficulty in smoke emission from circumferential heating.

[0072] In an alternative embodiment, the heating element can be a tubular / cylindrical heating element, in which the outer shell 11 and the aerosol generating matrix 10 of the aerosol generating article structure are inserted. Specifically, the heating element can be a resistance heating tube, a heating film attached to the substrate, or a coil that heats by electromagnetic induction. This embodiment does not limit this.

[0073] Preferably, in order to achieve uniform heating, in addition to using a material with good thermal conductivity to make the outer shell 11 to help the heat be transferred quickly and evenly, heat insulation components or insulation layers can also be set around the heating element to reduce the heat loss of the heating element and improve the heat transfer efficiency.

[0074] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications or equivalent substitutions made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An aerosol-generating product, characterized in that, include: The aerosol generation matrix has multiple air channels; The outer casing has a fixed section and an upstream section; The aerosol generating matrix is ​​disposed in the fixed section, the bottom of the upstream section is closed, and a cavity is formed between the aerosol generating matrix and the bottom of the upstream section. An air inlet and a protrusion protruding towards the fixed section are provided at the end of the cavity away from the aerosol generating matrix. The air inlet is connected to the air passage; The protrusions are spaced apart from the aerosol generating matrix along the axial direction of the outer shell to control the uneven distribution of flow rate in the multiple air channels in the aerosol generating matrix.

2. The aerosol-generating product according to claim 1, characterized in that, The aerosol generating matrix has a first air channel and a second air channel that extend along its own axial direction; the size of the first air channel is larger than the size of the second air channel, and the first air channel is located closer to the center of the aerosol generating matrix along its own radial direction than the second air channel. The protrusion is positioned to match the position of the first airway.

3. The aerosol-generating product according to claim 2, characterized in that, The aerosol generating matrix has multiple second air channels, and the bottom of the upstream section is provided with multiple air inlets; Multiple second air channels are arranged circumferentially around the aerosol generating matrix outside the first air channel; The plurality of air inlets are arranged circumferentially around the outer periphery of the protrusion and / or on the sidewall of the protrusion.

4. The aerosol-generating product according to claim 2, characterized in that, The ratio of the cross-sectional area S1 of the first airway to the total cross-sectional area S of all airways in the aerosol generating matrix satisfies: 0.4≤S1:S≤0.

6.

5. The aerosol-generating product according to claim 2, characterized in that, The ratio of the air flow rate V1 of the first airway to the total air flow rate V in the aerosol generating matrix satisfies: V1:V≤0.

45.

6. The aerosol-generating product according to claim 1, characterized in that, The distance L between the protrusion and the aerosol generating matrix satisfies: 0 < L ≤ 0.3 mm.

7. The aerosol-generating product according to claim 1, characterized in that, The aerosol generating product includes a filtration section, which includes a filter element and a first paper shell. The filter element is disposed in the first shell paper, the first shell paper abuts against the outer shell, the filter element is spaced apart from the aerosol generating matrix, and an axial cavity is formed between the filter element and the aerosol generating matrix.

8. The aerosol-generating product according to claim 7, characterized in that, The aerosol-generating article includes a second outer paper, which is at least fitted over the outer shell and a portion of the first outer paper.

9. The aerosol-generating product according to claim 7, characterized in that, The cavity is formed by the first shell paper and / or outer shell surrounding the filter element circumferentially.

10. The aerosol-generating product according to claim 1, characterized in that, The upstream section is narrower radially than the fixed section in the outer shell, and a stepped surface is formed at the connection between the upstream section and the fixed section. The end of the aerosol generating matrix abuts against the stepped surface.

11. The aerosol-generating product according to claim 1, characterized in that, The protrusion is cylindrical or frustum-shaped, and the ratio of the maximum diameter D1 of the protrusion to the diameter D of the outer shell satisfies: 0.2≤D1:D≤0.

4.

12. The aerosol-generating product according to claim 1, characterized in that, The protrusion is integrally formed with the outer shell, and / or the outer shell is made of a metal material.

13. The aerosol-generating product according to claim 1, characterized in that, The diameter D2 of the air inlet satisfies: 0.2mm ≤ D2 ≤ 0.5mm; the total cross-sectional area S2 of all the air inlets satisfies: 0.8mm. 2 ≤S2≤3.14mm 2 .

14. The aerosol-generating product according to claim 1, characterized in that, The aerosol generating matrix is ​​a one-piece molded solid matrix.

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