Aerosol-generating device
By using a heat conductor inserted into the aerosol matrix in the aerosol generation device and combining it with hot airflow for heating, the problem of limited contact area of the heating needle is solved, achieving a more efficient heating effect.
Patent Information
- Application Number
- CN202422839829.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-20
AI Technical Summary
In existing aerosol generation devices, the contact area between the heating needle and the aerosol matrix is limited, resulting in low heating efficiency.
By inserting a heat conductor into the aerosol matrix and setting heating elements on the heating channel, the heating area and efficiency are improved by combining contact heating and hot airflow heating.
By combining heat conduction with aerosol matrix through contact heating and hot air flow, the heating efficiency of the aerosol generation device is significantly improved, heat loss is reduced, and heating power consumption is lowered.
Smart Images
Figure CN223554324U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of aerosol generation, in particular to an aerosol generating device. BACKGROUND
[0002] In the process of using the aerosol generating device, the user will insert the aerosol substrate into the inside of the aerosol generating device, heat the aerosol substrate by the aerosol generating device, so that the aerosol substrate generates aerosol for the user to smoke.
[0003] In some related technologies, the aerosol generating device uses a heating needle to insert into the inside of the aerosol substrate to heat the aerosol substrate. However, by only using the heating needle to make thermal contact with the aerosol substrate, the area of contact between the heating needle and the aerosol substrate is limited, resulting in low heating efficiency of the aerosol generating device in heating the aerosol substrate. UTILITY MODEL CONTENT
[0004] The present application provides an aerosol generating device, which can solve the problem of limited contact area between the heating needle and the aerosol substrate and low heating efficiency.
[0005] In order to solve the above technical problems, the present application provides an aerosol generating device, which includes a housing assembly, a heat conductor and a heating element. The housing assembly is provided with a heating channel and a receiving cavity in communication, and the receiving cavity is used to accommodate the aerosol substrate; one end of the heat conductor is arranged in the heating channel, and the other end is arranged in the receiving cavity, so as to insert into the inside of the aerosol substrate when the aerosol substrate is accommodated in the receiving cavity; the heating element is arranged on the part of the heat conductor in the heating channel, and the heating element is used to heat the heat conductor; the cavity wall of the heating channel and the heat conductor have a first gap, and the heating element is also used to heat the airflow in the first gap, wherein the heated airflow flows into the aerosol substrate in the receiving cavity.
[0006] In one embodiment, the housing assembly includes a mounting piece and a cup body, the cup body forms a receiving cavity, one end of the receiving cavity has a first socket, and the first socket is used for inserting the aerosol substrate into the receiving cavity; the mounting piece is arranged at the end of the cup body away from the first socket, and the mounting piece forms a heating channel.
[0007] In one embodiment, the end of the cup body away from the first socket has a second socket, and the second socket is used for inserting the heat conductor into the receiving cavity; the inner diameter of the second socket is greater than the outer diameter of the heat conductor, so that the inner wall of the second socket and the heat conductor form a second gap, and the second gap is in communication with the first gap and the receiving cavity.
[0008] In an embodiment, the mounting member comprises a sealing part and a channel part, the mounting cavity is formed in the sealing part, one end of the mounting cavity has a placing opening, the cup body is arranged in the mounting cavity through the placing opening away from the first spout, and the cup body is sealingly connected with the sealing part; the channel part is arranged at the end of the sealing part away from the first spout, the heating channel is formed in the channel part, and the through hole is arranged on the sealing part and communicates the first gap with the mounting cavity.
[0009] In an embodiment, the mounting member further comprises a supporting part, one end of the supporting part is connected with the cavity wall of the mounting cavity, and the other end is arranged in the accommodating cavity; the heat-conducting body has a needle body part and a connecting part connected with each other, the part of the supporting part arranged in the accommodating cavity supports the needle body part, the accommodating cavity is arranged in the supporting part, and the connecting part is arranged in the accommodating cavity and the heating channel.
[0010] In an embodiment, the shell assembly further comprises an air inlet channel, the air inlet channel has an air inlet end and an air outlet end, the air inlet end is arranged close to the first spout, and the air outlet end is arranged close to the heating channel and communicates with the heating channel.
[0011] In an embodiment, the shell assembly comprises a support and a base assembly, the support and the base assembly enclose a mounting cavity, the cup body and the mounting member are arranged in the mounting cavity, the cup body is connected with the support, and the base assembly supports the end of the mounting member away from the cup body; the air inlet channel comprises a first air duct and a second air duct, the first air duct is formed between the cup body and the cavity wall of the mounting cavity, the second air duct is formed between the mounting member and the cavity wall of the mounting cavity, and the first air duct, the second air duct and the heating channel are sequentially communicated.
[0012] In an embodiment, the heat-generating member is a heating wire or a heating net, and the heat-generating member is wrapped around the part of the heat-conducting body arranged in the heating channel.
[0013] In an embodiment, the aerosol-generating device further comprises a heat preservation member, and the heat preservation member is arranged around the inner wall of the heating channel.
[0014] The emissivity of the heat preservation member is less than or equal to 0.3, or the material of the heat preservation member is aluminum foil or copper.
[0015] In an embodiment, the thermal conductivity of the mounting member is less than or equal to 5 W / (m·K), and the thermal conductivity of the heat-conducting body is greater than or equal to 20 W / (m·K).
[0016] Alternatively, the material of the mounting member is zirconium oxide or glass, and the material of the heat-conducting body is aluminum nitride or aluminum alloy.
[0017] The application provides an aerosol generating device, comprising a shell assembly, a heat conductor and a heating element. The shell assembly is provided with a heating channel and a receiving cavity in communication. The receiving cavity is used for accommodating an aerosol substrate. One end of the heat conductor is arranged in the heating channel, and the other end is arranged in the receiving cavity, so as to be inserted into the inside of the aerosol substrate when the aerosol substrate is accommodated in the receiving cavity. The heating element is arranged on the part of the heat conductor in the heating channel. The heating element is used for heating the heat conductor. The cavity wall of the heating channel and the heat conductor have a first gap. The heating element is also used for heating the airflow in the first gap. The heated airflow flows into the aerosol substrate in the receiving cavity. The aerosol generating device of the application is provided with the heat conductor. The heating element is arranged on the heat conductor in the heating channel. The heating element can heat the heat conductor. The heat conductor can be inserted into the inside of the aerosol substrate and heated in thermal contact with the aerosol substrate. The heating element can also heat the airflow near the heat conductor. The heated airflow can flow into the aerosol substrate in the receiving cavity from the first gap. That is, the aerosol substrate can also be heated by the hot airflow. Therefore, compared with the contact heating mode in which only the heat conductor is inserted into the aerosol substrate, the heating mode combining the contact heating and the hot airflow heating is adopted in the application. The heating area of the aerosol substrate can be increased, and the heating efficiency of the aerosol generating device for heating the aerosol substrate can be improved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 The structure schematic diagram of the aerosol generating device provided by an embodiment of the application is shown in FIG. 1.
[0019] Figure 2 The cross-sectional view of the aerosol generating device provided by another embodiment of the application is shown in FIG. 2. Figure 1
[0020] Figure 3 The cross-sectional view of part of the components in FIG. 2 and the airflow flow direction diagram are shown in FIG. 3.
[0021] Figure 4 The exploded view of FIG. 2 is shown in FIG. 4. Figure 3
[0022] Figure 5 The cross-sectional view of part of the components in FIG. 4 and the airflow flow direction diagram are shown in FIG. 5. Figure 4
[0023] The structure schematic diagram of the heat conductor and the heating element provided by an embodiment of the application is shown in FIG. 6. Figure 6
[0024] The structure schematic diagram of the cup body provided by an embodiment of the application is shown in FIG. 7. Figure 7
[0025] The structure schematic diagram of the mounting part provided by an embodiment of the application is shown in FIG. 8. Figure 8
[0026] BRIEF DESCRIPTION OF DRAWINGS: The housing assembly 10, the heating channel 11, the accommodating cavity 12, the mounting member 13, the sealing portion 131, the mounting cavity 1311, the placing opening 1312, the annular side wall 1313, the bottom wall 1314, the through hole 1315, the channel portion 132, the supporting portion 133, the accommodating cavity 1331, the cup body 14, the first socket 1411, the second socket 1412, the air inlet channel 15, the first air passage 151, the second air passage 152, the bracket 16, the base assembly 17, the assembly cavity 18, the heat-conducting body 20, the needle body 21, the connecting portion 22, the heating element 30, the aerosol substrate 40, the first gap 50, the second gap 60, the heat preservation element 70. DETAILED DESCRIPTION
[0027] The application will be further described below in details with specific embodiments and with reference to the drawings. Like elements in different embodiments are represented by like element reference numbers. In the following embodiments, many details are described in order to provide a better understanding of the application. However, those skilled in the art can easily recognize that some features can be omitted in different cases, or can be replaced by other elements, materials, methods. In some cases, some operations related to the application are not shown or described in the specification, in order to avoid the core of the application being overwhelmed by too much description, and it is not necessary to describe these related operations in details for those skilled in the art according to the description in the specification and the general technical knowledge in the art.
[0028] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments, and the operation steps involved in each embodiment can also be sequentially adjusted or adjusted in a manner that can be easily apparent to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing one embodiment, and do not mean that the composition and / or order is necessary.
[0029] In this paper, the serial numbers of components, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any order or technical meaning. Unless otherwise specified, the "connection" and "coupling" in this application include direct and indirect connections (couplings).
[0030] The terms "parallel", "perpendicular" and the like are defined in relation to the current process level, rather than the absolute strict definition in mathematics, and a small deviation is allowed, and approximately parallel, approximately perpendicular, etc. can be used. For example, A is parallel to B, which means that A and B are parallel or approximately parallel, and the included angle between A and B is between 0° and 10°. For example, A is perpendicular to B, which means that A and B are perpendicular or approximately perpendicular, and the included angle between A and B is between 80° and 100°. The orientation terms mentioned in the embodiments of the present application, such as "upper", "inner", "outer", "side" and the like, are only the direction of the drawings, therefore, the orientation terms are used to better and more clearly illustrate and understand the embodiments of the present application, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.
[0031] Please refer to Figures 1-5 The present application provides an aerosol generating device. The aerosol generating device can heat an aerosol substrate 40 to generate an aerosol from the aerosol substrate 40. The aerosol generating device includes a housing assembly 10, a heat conductor 20, and a heating element 30.
[0032] The housing assembly 10 is provided with a heating channel 11 and a receiving cavity 12, and the heating channel 11 and the receiving cavity 12 are in communication. The receiving cavity 12 is used to accommodate the aerosol substrate 40. The aerosol substrate 40 generally includes a substrate section, a cooling section, and a mouthpiece section connected in sequence. The substrate section can accommodate a leafy substrate, which can generate an aerosol after being heated. The cooling section can be provided with air holes to allow external cold air to enter the cooling section and mix with the aerosol to cool the aerosol. The mouthpiece section can be provided with filter material to filter the aerosol, and a user can inhale the aerosol flowing to the mouthpiece section. The aerosol generating device can include the aerosol substrate 40, or can not include the aerosol substrate 40, and the aerosol substrate 40 is only used as a consumable of the aerosol generating device.
[0033] One end of the heat conductor 20 is arranged in the heating channel 11, and the other end is arranged in the receiving cavity 12. When the aerosol substrate 40 is accommodated in the receiving cavity 12, the heat conductor 20 is inserted into the inside of the aerosol substrate 40, specifically, the heat conductor 20 is inserted into the substrate section of the aerosol substrate 40 to be in thermal contact with the substrate section of the aerosol substrate 40.
[0034] The heating element 30 is arranged on the part of the heat-conducting body 20 in the heating channel 11, and the heating element 30 is used to heat the heat-conducting body 20. Specifically, the heating element 30 can generate heat by being electrified, and the heating element 30 can transfer the heat to the heat-conducting body 20 located in the heating channel 11, the heat-conducting body 20 located in the heating channel 11 can transfer the heat to the heat-conducting body 20 located in the accommodation cavity 12, and the heat-conducting body 20 located in the accommodation cavity 12 can transfer the heat to the aerosol substrate 40.
[0035] The cavity wall of the heating channel 11 and the heat-conducting body 20 have a first gap 50, and the heating element 30 is also used to heat the airflow in the first gap 50. The heated airflow in the first gap 50 flows into the aerosol substrate 40 in the accommodation cavity 12.
[0036] The aerosol generating device of the present application can heat the heat-conducting body 20, and the heating element 30 can heat the heat-conducting body 20. The heat-conducting body 20 can be inserted into the interior of the aerosol substrate 40 and in thermal contact with the aerosol substrate 40 for heating. In addition, the heating element 30 can also heat the airflow near the heat-conducting body 20. The heated airflow can flow into the aerosol substrate 40 in the accommodation cavity 12 from the first gap 50, that is, the aerosol substrate 40 can also be heated by the hot airflow. Therefore, compared with the contact heating method in which only the heat-conducting body 20 is inserted into the aerosol substrate 40, the aerosol generating device of the present application combines contact heating and hot airflow heating, which can increase the heating area of the aerosol substrate 40 and improve the heating efficiency of the aerosol generating device for heating the aerosol substrate 40.
[0037] Preferably, the heat-conducting body 20 is in a needle-like structure, and the needle-like structure is in an elongated shape. Some prior art heat exchange elements are used to heat hot airflows, and the heat exchange needles have a larger volume than the needle-like structure. In addition, the heat exchange needles usually have a plurality of heat exchange holes inside, and the heat exchange area of the plurality of heat exchange holes is relatively large, which can cause a relatively large heat loss and result in a relatively large heating power consumption. The aerosol generating device of the present application does not need to be equipped with a heat exchange element, but only needs to be equipped with a heating channel 11 with a relatively narrow size on the side of the heat-conducting body 20. The heat-conducting body 20 is in a needle-like structure, has a relatively small volume, and has a relatively small heat dissipation area, which reduces heat loss. In addition, the heating element 30 is arranged between the cavity wall of the heating channel 11 and the heat-conducting body 20. The heat of the heating element 30 can be transferred inward to the heat-conducting body 20, so that the heat-conducting body 20 is used to heat the aerosol substrate 40 in thermal contact. The heat of the heating element 30 can be used to heat the airflow in the first gap 50 outward, and the airflow in the first gap 50 can flow into the aerosol substrate 40. That is, the heat of the heating element 30 is almost entirely used to heat the aerosol substrate 40, and the heat loss is relatively small, and the heating power consumption is small.
[0038] In one embodiment, as shown in Figure 6As shown, the heating element 30 is a heating wire, heating mesh, heating film, or heating sheet, and the heating element 30 is wrapped around a portion of the heat conductor 20 within the heating channel 11. Preferably, the heating element 30 is a heating wire, which can be spirally wound around the portion of the heat conductor 20 located within the heating channel 11.
[0039] In one embodiment, such as Figures 4-5 As shown in Figures 7-8, the housing assembly 10 includes a mounting member 13 and a cup body 14. A receiving cavity 12 is formed within the cup body 14, with a first insertion port 1411 at one end for inserting or withdrawing the aerosol matrix 40 into or out of the receiving cavity 12. The mounting member 13 is disposed outside the cup body 14, at the end of the cup body 14 furthest from the first insertion port 1411. A heating channel 11 is formed within the mounting member 13. Since the matrix segment of the aerosol matrix 40 is typically located far from the first insertion port 1411 when placed within the receiving cavity 12, the mounting member 13 needs to be positioned at the end of the cup body 14 furthest from the first insertion port 1411. This ensures that the airflow within the heating channel 11 within the mounting member 13 can directly flow into the matrix segment of the aerosol matrix 40, and facilitates that a portion of the heat conductor 20 can be placed within the heating channel 11, while the other portion is inserted into the matrix segment of the aerosol matrix 40.
[0040] In one embodiment, such as Figure 4 and Figure 7 As shown, the end of the cup body 14 away from the first inlet 1411 has a second inlet 1412, which is used for inserting the heat conductor 20 into the receiving cavity 12. Specifically, the cup body 14 has a first end and a second end opposite to each other along the axial direction, the first inlet 1411 is disposed at the first end of the cup body 14, and the second inlet 1412 is disposed at the second end of the cup body 14.
[0041] Furthermore, the inner diameter of the second socket 1412 is larger than the outer diameter of the heat conductor 20, so that a second gap 60 is formed between the inner wall of the second socket 1412 and the heat conductor 20. The second gap 60 connects the first gap 50 and the accommodating cavity 12, so that the hot air flow in the first gap 50 can flow into the aerosol matrix 40 in the accommodating cavity 12 through the second gap 60.
[0042] In one embodiment, such as Figure 4 and Figure 8As shown, the mounting member 13 comprises a sealing portion 131 and a passage portion 132, the sealing portion 131 is internally formed with a mounting cavity 1311, one end of the mounting cavity 1311 is provided with a placing opening 1312, and the cup body 14 is arranged in the mounting cavity 1311 through the placing opening 1312 away from one end of the first spigot 1411. The cup body 14 is sealingly connected with the sealing portion 131. Specifically, the sealing portion 131 comprises an annular side wall 1313 and a bottom wall 1314, the annular side wall 1313 and the bottom wall 1314 surround to form the mounting cavity 1311, one end of the annular side wall 1313 is provided with the placing opening 1312, and the bottom wall 1314 is connected to the end of the annular side wall 1313 away from the placing opening 1312. The annular side wall 1313 surrounds the outer periphery of the cup body 14 and is sealingly connected with the cup body 14. The sealing connection between the annular side wall 1313 and the cup body 14 can be interference fit, sealing connection through sealing glue, sealing connection through a sealing member, etc.
[0043] The passage portion 132 is arranged at the end of the sealing portion 131 away from the first spigot 1411, i.e. the passage portion 132 is arranged on the bottom wall 1314. The heating passage 11 is formed in the passage portion 132, and the bottom wall 1314 of the sealing portion 131 is provided with a through hole 1315, the through hole 1315 communicates the heating passage 11 with the mounting cavity 1311, i.e. the through hole 1315 communicates the first gap 50 with the mounting cavity 1311. Since the cup body 14 is arranged in the mounting cavity 1311, the airflow in the heating passage 11 can pass through the through hole 1315, the mounting cavity 1311 and the second spigot 1412 in sequence to flow to the aerosol substrate 40 in the containing cavity 12. By arranging the mounting member 13 to comprise the sealing portion 131 and the passage portion 132, the passage portion 132 can be used to form the heating passage 11 and mount the heat-conducting body 20 and the heating member 30, and the sealing portion 131 can ensure that the airflow flowing to the containing cavity 12 from the passage portion 132 has good air tightness, prevent external cold air from entering the sealing portion 131 and prevent hot airflow from flowing out of the sealing portion 131, thereby improving the utilization efficiency of heat.
[0044] In an embodiment, as shown in Figure 4 and Figure 8 , the mounting member 13 further comprises a supporting portion 133, one end of the supporting portion 133 is connected to the cavity wall of the mounting cavity 1311, and the other end of the supporting portion 133 is arranged in the containing cavity 12 through the second spigot 1412. In this embodiment, the second gap 60 is formed between the supporting portion 133 and the inner wall of the second spigot 1412. The number of through holes 1315 can be multiple, and the multiple through holes 1315 are arranged on the bottom wall 1314 of the sealing portion 131 at the circumferential side of the supporting portion 133.
[0045] As shown in Figure 4 , 6As shown in Figure 8, the heat conductor 20 has a needle body portion 21 and a connecting portion 22 connected together. A partial support portion 133 provided in the receiving cavity 12 supports the needle body portion 21. The support portion 133 is provided with a receiving cavity 1331. The connecting portion 22 is provided in the receiving cavity 1331 and in the heating channel 11. Specifically, the needle body portion 21 is provided outside the receiving cavity 1331. One end of the connecting portion 22 passes through the receiving cavity 1331 and is connected to the needle body portion 21. The other end of the connecting portion 22 passes through the receiving cavity 1331 and is provided in the heating channel 11.
[0046] Preferably, the outer diameter of the connecting portion 22 is slightly smaller than the inner diameter of the receiving cavity 1331, so that the connecting portion 22 can be assembled into the receiving cavity 1331. The outer diameter of the needle body portion 21 is slightly larger than the inner diameter of the receiving cavity 1331, so that the support portion 133 can support the needle body portion 21. By providing the support portion 133, the heat conductor 20 can be stably mounted on the mounting member 13. In other embodiments, the mounting member 13 may not have the support portion 133, and the heat conductor 20 may be mounted in the housing assembly 10 in other ways.
[0047] like Figure 4 As shown, in one embodiment, the housing assembly 10 is further provided with an air inlet channel 15, which has an air inlet end and an air outlet end. The air inlet end is located near the first inlet 1411, and the air outlet end is located near the heating channel 11 and communicates with the heating channel 11. Thus, the air inlet channel 15 of the housing assembly 10 allows air to enter from top to bottom, and the gas in the air inlet channel 15 can flow into the heating channel 11. The gas in the air inlet channel 15 can enter the heating channel 11 from the channel portion 132 of the mounting member 13, for example, from the side or bottom of the channel portion 132. Since the cup body 14 is usually located on the top side of the housing assembly 10, and the air inlet channel 15 allows air to enter from top to bottom, compared to air entering from the bottom side of the housing assembly 10, the housing assembly 10 does not need to provide an air duct to guide the airflow from the bottom side to the top side. It only needs to provide the air inlet channel 15 on the outside of the cup body 14, which can prevent the air duct from occupying too much space inside the housing assembly 10.
[0048] In one embodiment, such as Figure 4 and Figure 5As shown, the housing assembly 10 comprises a bracket 16 and a base assembly 17, which enclose an assembly cavity 18, and the cup 14 and the mounting member 13 are arranged in the assembly cavity 18. The cup 14 is connected to the bracket 16, and specifically, the cup 14 is detachably connected to the bracket 16, for example, by means of clamping. The base assembly 17 supports one end of the mounting member 13 away from the cup 14, so as to assemble the mounting member 13 in the assembly cavity 18. The air inlet channel 15 comprises a first air passage 151 and a second air passage 152, the first air passage 151 is formed between the cup 14 and the cavity wall of the assembly cavity 18, and the second air passage 152 is formed between the mounting member 13 and the cavity wall of the assembly cavity 18, and the first air passage 151, the second air passage 152 and the heating channel 11 are sequentially communicated. External air can flow into the heating channel 11 through the first air passage 151 and the second air passage 152 in sequence.
[0049] In an embodiment, as shown, Figure 5 The aerosol-generating device further comprises a heat preservation member 70, which is arranged around the inner wall of the heating channel 11. The heat preservation member 70 can be used to preserve the heat in the heating channel 11 and prevent the heat in the heating channel 11 from radiating outward, so as to improve the heat utilization rate. Preferably, the heat preservation member 70 is made of a material with low emissivity, for example, the emissivity of the heat preservation member 70 is less than or equal to 0.3, and the material with low emissivity may, for example, be an aluminum foil or copper.
[0050] In an embodiment, the mounting member 13 can be made of a material with high temperature resistance and low thermal conductivity, so as to further prevent the heat in the mounting member 13 from radiating outward, wherein the thermal conductivity of the mounting member 13 is less than or equal to 5 W / (m·K), and the mounting member 13 may, for example, be made of zirconia or glass. Similarly, the base assembly 17 supporting the mounting member 13 can be made of a material with high temperature resistance and low thermal conductivity, and the thermal conductivity of the base assembly 17 is less than or equal to 5 W / (m·K), and the material of the base assembly 17 may, for example, be polyether ether ketone (PEEK) or polyimide (PI). The heat conductor 20 is made of a material with high thermal conductivity, so that the energy of the heat conductor 20 can be rapidly transmitted to the needle body 21, and the thermal conductivity is greater than or equal to 20 W / (m·K), and the material of the heat conductor 20 may, for example, be aluminum nitride or aluminum alloy.
[0051] The above application of specific examples to the present application is only used to help understand the present application and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations or substitutions can be made.
Claims
1. An aerosol-generating device, characterized by, The application relates to a shell assembly for an aerosol generating device. The shell assembly comprises a heating channel and a receiving cavity in communication, the receiving cavity being used for accommodating an aerosol substrate; a heat conductor, one end of the heat conductor being arranged in the heating channel and the other end being arranged in the receiving cavity, so as to be inserted into the aerosol substrate when the aerosol substrate is accommodated in the receiving cavity; and a heating element arranged on the heat conductor in the heating channel, the heating element being used for heating the heat conductor; a first gap is formed between the cavity wall of the heating channel and the heat conductor, and the heating element is also used for heating the airflow in the first gap, wherein the heated airflow flows into the aerosol substrate in the receiving cavity.
2. The aerosol-generating device of claim 1, wherein, The shell assembly comprises a mounting member and a cup body, the receiving cavity is formed in the cup body, one end of the receiving cavity is provided with a first socket for inserting the aerosol substrate into the receiving cavity; the mounting member is arranged at the end of the cup body away from the first socket, and the heating channel is formed in the mounting member.
3. The aerosol-generating device of claim 2, wherein, The end of the cup body away from the first socket is provided with a second socket for inserting the heat conductor into the receiving cavity; the inner diameter of the second socket is larger than the outer diameter of the heat conductor, so that a second gap is formed between the inner wall of the second socket and the heat conductor, and the second gap is in communication with the first gap and the receiving cavity.
4. The aerosol-generating device according to claim 2 or 3, wherein, The mounting member comprises a sealing part and a channel part, the mounting cavity is formed in the sealing part, one end of the mounting cavity is provided with a placing opening, the end of the cup body away from the first socket is arranged in the mounting cavity through the placing opening, and the cup body is sealingly connected with the sealing part; the channel part is arranged at the end of the sealing part away from the first socket, the heating channel is formed in the channel part, and a through hole is arranged on the sealing part, the through hole being in communication with the first gap and the mounting cavity.
5. The aerosol-generating device of claim 4, wherein, The mounting member further comprises a supporting part, one end of the supporting part is connected with the cavity wall of the mounting cavity, and the other end is arranged in the receiving cavity; the heat conductor is provided with a needle body part and a connecting part in connection, the needle body part is supported by the part of the supporting part arranged in the receiving cavity, the supporting part is provided with a containing cavity, and the connecting part is arranged in the containing cavity and in the heating channel.
6. The aerosol-generating device of claim 2 or 3, wherein, The shell assembly is further provided with an air inlet channel, the air inlet channel is provided with an air inlet end and an air outlet end, the air inlet end is arranged close to the first socket, and the air outlet end is arranged close to the heating channel and in communication with the heating channel.
7. The aerosol-generating device of claim 6, wherein, The shell assembly comprises a support and a base assembly, the support and the base assembly enclose an assembly cavity, the cup body and the mounting member are arranged in the assembly cavity, the cup body is connected with the support, and the base assembly supports the end of the mounting member away from the cup body; the air inlet channel comprises a first air duct and a second air duct, the first air duct is formed between the cup body and the cavity wall of the assembly cavity, the second air duct is formed between the mounting member and the cavity wall of the assembly cavity, and the first air duct, the second air duct and the heating channel are sequentially in communication.
8. The aerosol-generating device of claim 1, wherein, The heating element is a heating wire or a heating net, and the heating element is wrapped around the part of the heat-conducting body in the heating channel.
9. The aerosol-generating device of claim 1, wherein, The aerosol-generating device further comprises a heat-insulating element arranged on the inner wall of the heating channel. The emissivity of the heat-insulating element is less than or equal to 0.3, or the material of the heat-insulating element is aluminum foil or copper. 10.The aerosol-generating device of claim 2, wherein, The thermal conductivity of the mounting element is less than or equal to 5 W / (m·K), and the thermal conductivity of the heat-conducting body is greater than or equal to 20 W / (m·K). Alternatively, the material of the mounting element is zirconium oxide or glass, and the material of the heat-conducting body is aluminum nitride or aluminum alloy.