Aerosol-generating rod and aerosol-generating system

Abstract

This application provides an aerosol generating rod and an aerosol generating system, belonging to the field of aerosol generation technology. The aerosol generating system includes an aerosol generating device and an aerosol generating rod. A matrix and a filter element are disposed inside the outer tube of the aerosol generating rod. The matrix is ​​heated to generate aerosols, and the filter element is used to filter the aerosols. A support core is also disposed inside the outer tube, supporting the filter element and the matrix. An annular cavity is formed between the support core and the outer tube, and the annular cavity communicates with the filter element. At least a portion of the matrix's end face facing the filter element is exposed in the annular cavity. When the aerosol generating device circumferentially heats the matrix of the aerosol generating rod, the portion of the matrix's end face exposed in the annular cavity is heated and generates aerosols first. Since the annular cavity does not obstruct the aerosols, this portion of the aerosols can be rapidly and smoothly extracted.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, specifically to an aerosol generating rod and an aerosol generating system. Background Technology

[0002] An aerosol generation system typically includes an aerosol generating device and an aerosol generating rod, which contains a matrix. The aerosol generating device uses a heating-non-combustible method to heat the matrix in the aerosol generating rod into an aerosol for users to inhale.

[0003] There are various heating structures for aerosol generating devices. One type is a heating channel structure surrounded by circumferential heating elements. The aerosol generating rod has a corresponding section of the substrate inserted into the heating channel. The circumferential heating elements heat the outer periphery of the aerosol generating rod, and the heat is transferred radially from the outside to the inside. Consequently, the outer portion of the substrate is heated into aerosol before the central portion. Existing aerosol generating rods generally have a structure that obstructs and absorbs aerosols on the side of the substrate facing the suction end, which is detrimental to the flow of the aerosol generated by the rod towards the suction end. Utility Model Content

[0004] This application provides an aerosol generating rod to solve the technical problem of poor aerosol flow to the suction end when the aerosol generating rod is circumferentially heated; this application also provides an aerosol generating system having the above-mentioned aerosol generating rod.

[0005] In a first aspect, this application provides an aerosol generating rod, comprising:

[0006] outer tube;

[0007] A matrix, which is filled inside the outer tube, is used to be heated to generate an aerosol;

[0008] A filter element, disposed inside the outer tube, is used to filter the aerosol;

[0009] A support core is disposed inside the outer tube and supported between the filter element and the substrate;

[0010] An annular cavity is formed between the support core and the outer tube, and the annular cavity communicates with the filter element; the end face of the matrix facing the filter element is at least partially exposed in the annular cavity.

[0011] In one embodiment, the portion of the end face exposed in the annular cavity is an annular exposed portion, and the outer contour line of the annular exposed portion is the outer contour line of the end face.

[0012] In one embodiment, the support core includes a large-diameter section and a small-diameter section, the outer peripheral surface of the large-diameter section is fitted with the outer tube, the small-diameter section is supported by the matrix, and the annular cavity is located between the small-diameter section and the outer tube.

[0013] In one embodiment, the large-diameter section has an air guiding channel that communicates with the annular cavity to guide the aerosol flow toward the filter element.

[0014] In one embodiment, the air guide channel extends through the support core, or the air guide channel and the filter element are partially separated by the support core, the support core being a porous, breathable material that allows the aerosol to pass through the support core.

[0015] In one embodiment, the air guide channel is an annular channel, the large-diameter section includes a core surrounded by the annular channel, the core is coaxial with the small-diameter section, and the radial dimension of the outer peripheral surface of the core is equal to the radial dimension of the outer peripheral surface of the small-diameter section.

[0016] In one embodiment, the aerosol generating rod further has an air inlet channel, with one end of the air inlet channel being an outer port and the other end being an inner port. The outer port is located on the outer surface of the outer tube, and the inner port is located on the wall of the air guide channel.

[0017] In one embodiment, along the flow direction of the aerosol within the air guiding channel, the end of the air guiding channel near the annular cavity is a first end, and the end away from the annular cavity is a second end, with the inner port being near the first end and away from the second end.

[0018] In one embodiment, the filter element and the support core are either separately or integrally formed.

[0019] Secondly, this application provides an aerosol generation system, including an aerosol generation device and an aerosol generation rod, wherein the aerosol generation rod is any one of the aerosol generation rods in the above embodiments, the aerosol generation device has a heating cylinder, and the heating cylinder has an inner cavity for inserting at least a portion of the aerosol generation rod containing the matrix, so that the heating cylinder can circumferentially heat the matrix.

[0020] According to the aerosol generation system in the above embodiments, when the outer periphery of the matrix portion of the aerosol generation rod is heated by the aerosol generation device, the heat is transferred radially from the outside to the inside of the aerosol generation rod. The outer periphery of the matrix is ​​heated first to generate aerosol. Since there is an annular cavity between the support core and the outer tube, the portion of the matrix exposed at the end face of the annular cavity is heated to generate aerosol before the portion of the matrix in contact with the support core. The annular cavity allows the aerosol generated in this portion to flow out without obstruction, increasing the aerosol extraction speed of the aerosol generation rod and making the aerosol extraction smoother. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an aerosol generation system in one embodiment of this application;

[0022] Figure 2 This is a cross-sectional view of an aerosol generation system in one embodiment of this application;

[0023] Figure 3 This is a cross-sectional view of the aerosol generating rod of an aerosol generating system in one embodiment of this application.

[0024] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0025] Figure 5 This is a cross-sectional structural schematic diagram of the aerosol generating device of an aerosol generating system in one embodiment of this application.

[0026] List of feature names corresponding to the labels in the figure:

[0027] 10. Aerosol generating rod; 11. Outer tube; 12. Matrix; 13. Filter element; 14. Support core; 141. Large diameter section; 1411. Core; 142. Small diameter section; 143. Air guide channel; 15. Annular cavity; 16. Air inlet channel; 161. Outer port; 162. Inner port; 17. Plug; 171. Air inlet hole;

[0028] 20. Aerosol generating device; 21. Shell; 22. Containing channel; 221. Heating section; 222. Guiding section; 23. Heating assembly; 231. Heating assembly top cover; 232. Heating cylinder; 233. Heating assembly bottom cover; 2331. Bottom cover inner cavity; 2332. Bottom cover vent; 234. Annular air passage. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0030] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0031] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0032] The aerosol generating rod has a suction end and an air inlet end. The suction end is equipped with a filter element to form a filter nozzle structure, while the air inlet end contains a substrate. Heating the substrate generates aerosols. During suction, external gas enters the aerosol generating rod through the air inlet end, entraining the generated aerosols to form a mixed airflow. This mixed airflow is then drawn in by the user through the filter element, which filters the airflow. Generally, a support core is placed between the substrate and the filter element. While the aerosol flowing through the support core is cooled, the support core can also create an obstruction preventing the aerosol from flowing out of the substrate, and may even absorb the aerosol, affecting the smoothness and speed of aerosol extraction from the aerosol generating rod. To solve this technical problem, this application provides the following specific solution.

[0033] This application provides an aerosol generation system that can heat a matrix into an aerosol for users to inhale. An embodiment of the aerosol generation system in this application is as follows:

[0034] In one embodiment, please refer to Figure 1 and Figure 2 The aerosol generation system includes an aerosol generating rod 10 and an aerosol generating device 20.

[0035] The structure of the aerosol generating rod 10 will be introduced first below.

[0036] The structure of the aerosol generating rod 10 is as follows: Figure 3 As shown, the aerosol generating rod 10 includes an outer tube 11, which is a cylindrical structure of a certain length, and its inner cavity is used to fill the corresponding substance. The outer tube 11 is generally a paper tube, which enables the aerosol generating rod 10 to have a defined shape and has the ability to maintain that shape so as to cooperate with the aerosol generating device 20.

[0037] The outer tube 11 has a suction end at one end and an air inlet end at the other. During use, the user draws air from the outside into the outer tube 11 through the suction end. The outer tube 11 is filled with a matrix 12, which is a substance that generates an aerosol upon heating. Suitable matrices 12 are well-known to those skilled in the art and will not be described further here. The morphology of the matrix 12 is also known to those skilled in the art; it can be granular, strip-shaped, or sheet-like, or a mixture of various morphologies. The matrix 12 is positioned at the air inlet end within the outer tube 11.

[0038] The outer tube 11 is also filled with a filter element 13, which is located at the suction end of the outer tube 11 to form a filter nozzle structure. The filter element 13 has good air permeability, and through physical barrier and capillary adsorption, it can trap condensate and atomized microparticles in the air-aerosol mixture on its surface or within its internal structure, preventing these substances from entering the user's respiratory tract. In some embodiments, the filter element 13 is made of cellulose acetate; in other embodiments, it can be made of one or more of the following materials: polypropylene, polyethylene, wood pulp fiber paper, etc.

[0039] A support core 14 is also provided inside the outer tube 11. The support core 14 is positioned between the substrate 12 and the filter element 13, providing support between them. The substrate 12 is heated to generate aerosol through high-temperature baking. Therefore, the aerosol generated by the substrate 12 has a high temperature. As the aerosol flows from the section of the aerosol generating rod 10 with the support core 14 to the filter element 13, the aerosol can be cooled. The material of the support core 14 can be the same as that of the filter element 13, such as cellulose acetate, or it can be a different material than that of the filter element 13.

[0040] An annular cavity 15 is formed between the support core 14 and the outer tube 11, and the annular cavity 15 communicates with the filter element 13. The end face of the matrix 12 facing the filter element 13 has a portion exposed in the annular cavity 15. Based on this structure, when the portion of the aerosol generating rod 10 containing the matrix 12 is circumferentially heated, heat is transferred radially from the outside to the inside of the aerosol generating rod 10. The portion of the matrix 12 exposed in the annular cavity 15 can be heated more preferentially to generate aerosols. The annular cavity 15 allows this portion of aerosol to flow directly into the annular cavity 15 without obstruction, ensuring the aerosol extraction speed and making the aerosol extraction smoother. This also reduces the power consumption of the aerosol generating device.

[0041] Meanwhile, the portion of the matrix 12 that is exposed to the annular cavity 15 and the portion of the support core 14 that abuts against it are heated later to generate aerosols. Compared to the annular cavity 15, the portion of the support core 14 that abuts against the matrix 12, as a solid structure (the center of the portion of the support core 14 that abuts against the matrix 12 does not have a channel), can block the outflow of aerosols from the matrix 12, reduce the speed at which aerosols flow out of the matrix 12, and allow the portion of the matrix 12 that contacts the support core 14 to slowly release aerosols, thereby enhancing the sustainability of aerosol generation by the aerosol generating rod 10 and thus enhancing the durability of the aerosol generating rod 10.

[0042] In some embodiments, the portion of the substrate 12 exposed to the annular cavity 15 at the end face of the filter element 13 is an annular exposed portion. The outer tube 11 and the support core 14 directly form the annular cavity 15, such that the outer contour line of the annular exposed portion is the outer contour line of the end face. Thus, the end face of the outermost portion of the substrate 12 is exposed to the annular cavity 15. When the substrate 12 of the aerosol generating rod 10 is baked and heated circumferentially, the outermost portion of the substrate 12 is baked and aerosols are generated first. This enables the aerosols generated earliest by the substrate 12 to directly enter the annular cavity 15, so that the aerosol generating rod 10 can be drawn out of the aerosol as quickly as possible.

[0043] In some other embodiments, the outer periphery of one end of the support core 14 that abuts against the substrate 12 is fitted with the outer tube 11. An annular groove is provided at this end of the support core 14, with the groove opening located on the end face of the support core 14 that abuts against the substrate 12. The annular groove forms an annular cavity 15. In this case, the support core 14 includes a core rod surrounded by the annular groove. The annular cavity 15 is located between the core rod and the outer tube 11. The annular cavity 15 is not directly surrounded by the outer tube 11. The outer contour line of the annular exposed portion of the substrate 12 end face is located on the side of the outer contour line of the substrate 12 end face closer to the center of the substrate 12.

[0044] Please refer to Figure 3The support core 14 includes a large-diameter section 141 and a small-diameter section 142. The outer circumferential surface of the large-diameter section 141 is fitted with the outer tube 11, providing radial support to the outer tube 11 and enabling the aerosol generating rod 10 to maintain its shape better in the radial direction. Simultaneously, the end face of the large-diameter section 141 away from the small-diameter section 142 also abuts against the filter element 13. The small-diameter section 142 extends towards the matrix 12 relative to the large-diameter section 141, with its end abutting against the matrix 12. The annular cavity 15 is located between the small-diameter section 142 and the outer tube 11.

[0045] To reduce suction resistance and ensure smooth flow of aerosol to filter element 13, please refer to... Figure 3 In some embodiments, an air guide channel 143 is provided in the large diameter section 141. The air guide channel 143 is connected to the annular cavity 15. The aerosol entering the annular cavity 15 can flow to the filter element 13 under the guidance of the air guide channel 143.

[0046] Regarding the structural form of the air guiding channel 143, in some embodiments, the air guiding channel 143 can penetrate the support core 14. The air guiding channel 143 and the annular cavity 15 form a connecting channel between the matrix 12 and the filter element 13. Aerosols entering the annular cavity 15 can flow directly to the filter element 13 through the air guiding channel 143, minimizing the suction resistance of the aerosol generating rod 10 and ensuring the aerosol being drawn out of the aerosol generating rod 10 at a certain speed. For the material of the support core 14 in this structure, it can be a porous, breathable material, such as the same material as the filter element 13, but with breathable properties. Alternatively, it can be a different material from the filter element 13 but still breathable, allowing some aerosols to penetrate the support core 14 and flow to the filter element 13 under suction. Of course, based on the premise that the air guiding channel 143 penetrates the support core 14, the support core 14 can also be made of an impermeable material.

[0047] The air guide channel 143 may also not penetrate the support core 14, such as... Figure 3 As shown, the air guiding channel 143 is a groove structure set on the large-diameter section 141. That is, the air guiding channel 143 and the filter element 13 are partially separated by the support core 14. In this case, the support core 14 is made of a porous, breathable material, which allows the aerosol to flow through the support core 14 to the filter element 13 under the drive of suction. The setting of the air guiding channel 143 not only guides the aerosol to the location of the filter element 13 and reduces the resistance of the aerosol passing through the support core 14, but also makes the aerosol and the support core 14 have a larger contact area, increasing the amount of aerosol passing through the support core 14.

[0048] It should be noted that, to those skilled in the art, the pores of the support core 14, as a breathable material, and the air-guiding channels 143 are not on the same order of magnitude in size. The pores are the microporous structure of the material itself, while the air-guiding channels 143 are structures formed integrally from the material. Aerosols must be driven by negative pressure generated by suction to pass through the pores.

[0049] Please refer to Figure 3 In some embodiments, the air guiding channel 143 is an annular channel, and the large-diameter section 141 includes a core 1411 surrounded by the annular channel. The core 1411 is coaxial with the small-diameter section 142, and the radial dimension of the outer peripheral surface of the core 1411 is equal to the radial dimension of the outer peripheral surface of the small-diameter section 142, so as to ensure the smooth entry of aerosol into the air guiding channel 143.

[0050] In some other embodiments, the support core 14 can be a round rod structure with a constant diameter, that is, the support core 14 is not attached to the outer tube 11, and the support core 14 and the outer tube 11 together form an annular cavity 15, which extends from the end face of the matrix 12 to the location of the filter element 13.

[0051] As mentioned above, the aerosol generated by baking and heating the matrix 12 has a high temperature. In order to reduce the temperature of the aerosol to a suitable temperature for users to inhale, the aerosol generating rod 10 is also provided with an air inlet channel 16. The air inlet channel 16 is used to allow low-temperature air from the outside to enter the aerosol generating rod 10 and mix with the aerosol to reduce the temperature of the aerosol.

[0052] In some embodiments, please refer to Figure 4 The intake channel 16 has an outer port 161 at one end and an inner port 162 at the other end. The outer port 161 is located on the outer circumferential surface of the outer tube 11, and the inner port 162 is located on the wall of the air guide channel 143. Low-temperature air from the outside can enter the air guide channel 143 through the intake channel 16 and mix with the aerosol inside the air guide channel 143. By opening the intake channel 16 on the large-diameter section 141 of the outer tube 11 and the support core 14, the fit between the outer circumference of the large-diameter section 141 and the outer tube 11 can reduce the impact of setting the intake channel 16 on the structural strength of the aerosol generating rod 10.

[0053] Regarding the specific location of the inner port 162 on the wall of the air guiding channel 143, in some embodiments, along the flow direction of the aerosol in the air guiding channel 143, the end of the air guiding channel 143 closer to the annular cavity 15 is the first end, and the end farther from the annular cavity 15 is the second end. The inner port 162 is positioned closer to the first end and farther from the second end. In this way, the low-temperature air and aerosol entering the air guiding channel 143 can have a longer mixing path, so that the low-temperature air and aerosol can be mixed more evenly, thereby reducing the temperature of the aerosol to a lower level.

[0054] In some embodiments, multiple air inlet channels 16 are evenly distributed along the circumference of the aerosol generating rod 10 to achieve uniform air intake in the circumference of the aerosol generating rod 10, thereby achieving more thorough cooling of the aerosol.

[0055] The filter element 13 and the support core 14 can be integrally formed or have a separate structure. When they are separate structures, the materials of the filter element 13 and the support core 14 can be selected independently to meet their respective functional requirements. The outer tube 11 can be an integrally formed structure or a multi-segment joined structure.

[0056] Please refer to Figure 2 and Figure 3 The aerosol generating rod 10 also has a plug 17, which is located on the side of the substrate 12 facing away from the filter element 13. The plug 17 can prevent the substrate 12 from falling out of the outer tube 11. The plug 17 has a cylindrical structure with air inlets 171 evenly distributed on it. During suction, outside air enters the aerosol generating rod 10 through the air inlets 171.

[0057] The structure of the aerosol generating device 20 is described below.

[0058] Please refer to the structure of the aerosol generating device 20. Figure 5 The aerosol generating device 20 includes a housing 21, inside which a receiving channel 22 is formed. The receiving channel 22 has an inlet disposed on the housing 21, through which the aerosol generating rod 10 can be inserted into the receiving channel 22. The receiving channel 22 has a heating section 221, and the section of the receiving channel 22 located between the heating section 221 and the inlet is a guide section 222.

[0059] like Figure 5 As shown, the aerosol atomizing device 20 includes a heating component 23 disposed in the housing 21. The insertion direction of the aerosol generating rod 10 in the accommodating channel 22 is defined as the up-down direction. The heating component 23 includes a heating element upper cover 231, a heating cylinder 232, and a heating element bottom cover 233.

[0060] The upper cover 231 and the lower cover 233 of the heating element are fixed inside the housing 21. The upper cover 231 engages with the upper end of the heating cylinder 232, restricting its upward movement and constraining its radial position. The lower cover 233 engages with the lower end of the heating cylinder 232, restricting its downward movement and constraining its radial position. Thus, through the engagement of the upper and lower covers 231 and 233, the heating cylinder 232 is installed within the housing 21. The heating cylinder 232 is an electrically conductive structure capable of generating heat, and its inner cavity forms a heating section 221.

[0061] The axial dimension of the heating cylinder 232 is approximately the same as the axial dimension of the substrate 12. In use, the aerosol generating rod 10 is inserted into the receiving channel 22, with one section of the aerosol generating rod 10 containing the substrate 12 located within the heating section 221. The control system within the aerosol generating device 20 controls the heating cylinder 232 to bake the substrate 12 of the aerosol generating rod 10 in response to the user's suction action, thereby atomizing the substrate 12 into an aerosol.

[0062] Please refer to Figure 2 and Figure 5 The bottom cover 233 of the heating element has an inner cavity 2331. A section of the aerosol generating rod 10 with a plug 17 is inserted into it. The bottom of the inner cavity 2331 has a bottom cover vent 2332, which allows external gas to pass through. In addition, the top cover 231, the heating cylinder 232, and the bottom cover 233 of the heating element form an annular air passage 234 surrounding the accommodating channel 22. The top cover 231 and the heating cylinder 232 form an air inlet for external gas to enter the annular air passage 234, and the top cover 231 and the bottom cover 233 form an air outlet for gas to flow out of the annular air passage 234.

[0063] During suction, outside air enters the annular airway 234 through the air inlet, then flows out of the annular airway 234 through the air outlet and flows to the bottom cover air hole 2332. Finally, it enters the aerosol generating rod 10 through the bottom cover air hole 2332 and the air inlet 171. When the user suctions, the control system of the aerosol generating device 20 controls the heating cylinder 232 to bake and heat the matrix 12 inside the aerosol generating rod 10. The generated aerosol flows towards the filter element 13 with the air entering the aerosol generating rod 10. During the baking and heating process, the aerosol generated on the part of the matrix 12 exposed at the end face of the annular cavity 15 directly enters the annular cavity 15. The setting of the annular cavity 15 provides an unobstructed environment for the flow of aerosol to the filter element 13, ensuring the smooth flow of aerosol.

[0064] This application also provides an aerosol generating rod, which has the same structure as the aerosol generating rod of the aerosol generating system in the above embodiments, and will not be described again here.

[0065] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. An aerosol generating rod, characterized in that, include: outer tube; A matrix, which is filled inside the outer tube, is used to be heated to generate an aerosol; A filter element, disposed inside the outer tube, is used to filter the aerosol; A support core is disposed inside the outer tube and supported between the filter element and the substrate; An annular cavity is formed between the support core and the outer tube, and the annular cavity communicates with the filter element; the end face of the matrix facing the filter element is at least partially exposed in the annular cavity.

2. The aerosol generating rod as described in claim 1, characterized in that, The portion of the end face exposed in the annular cavity is an annular exposed portion, and the outer contour line of the annular exposed portion is the outer contour line of the end face.

3. The aerosol generating rod as described in claim 1, characterized in that, The support core includes a large-diameter section and a small-diameter section. The outer circumferential surface of the large-diameter section is in contact with the outer tube, and the small-diameter section is supported by the matrix. The annular cavity is located between the small-diameter section and the outer tube.

4. The aerosol generating rod as described in claim 3, characterized in that, The large-diameter section has an air guiding channel that communicates with the annular cavity to guide the aerosol flow to the filter element.

5. The aerosol generating rod as described in claim 4, characterized in that, The air guide channel extends through the support core, or the air guide channel and the filter element are partially separated by the support core, and the support core is a porous, breathable material, allowing the aerosol to pass through the support core.

6. The aerosol generating rod as described in claim 5, characterized in that, The air guide channel is an annular channel, and the large-diameter section includes a core surrounded by the annular channel. The core is coaxial with the small-diameter section, and the radial dimension of the outer circumference of the core is equal to the radial dimension of the outer circumference of the small-diameter section.

7. The aerosol generating rod according to any one of claims 4-6, characterized in that, The aerosol generating rod also has an air inlet channel, with one end of the air inlet channel being an outer port and the other end being an inner port. The outer port is located on the outer surface of the outer tube, and the inner port is located on the wall of the air guide channel.

8. The aerosol generating rod as described in claim 7, characterized in that, Along the flow direction of the aerosol in the gas guiding channel, the end of the gas guiding channel near the annular cavity is the first end, and the end away from the annular cavity is the second end. The inner port is close to the first end and away from the second end.

9. The aerosol generating rod according to any one of claims 1-6, characterized in that, The filter element and the support core are either separately or integrally formed.

10. An aerosol generation system, characterized in that, The invention includes an aerosol generating device and an aerosol generating rod, wherein the aerosol generating rod is the aerosol generating rod according to any one of claims 1-9, the aerosol generating device having a heating cylinder having an inner cavity for inserting at least a portion of the aerosol generating rod containing the matrix, such that the heating cylinder can circumferentially heat the matrix.

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