Heating assembly and aerosol generating device

Abstract

The utility model relates to the technical field of aerosol generation, in particular to a heating assembly and an aerosol generating device.The heating assembly is provided with an air inlet section and an air outlet section which are arranged in the first direction, the heating assembly comprises a heating piece and a heat conduction piece, the heating piece is provided with an airflow channel communicating an air inlet with an air outlet, and the air inlet is located in the air inlet section; the heat conduction piece is connected to the outer side of the heating piece, the wall face of the heat conduction piece is arranged at the positions, corresponding to the air inlet and the air outlet, of the heat conduction piece in a penetrating mode, and the heat conduction piece is provided with a heat conduction face deviating from the heating piece at the air outlet section. The hot air flow can heat the aerosol generating substrate after being discharged from the air outlet section, heat of the heating piece can be directly transmitted to the aerosol generating substrate outwards through the heat conduction face, the heat of the heating piece is transmitted to the aerosol generating substrate inwards and outwards, the heat loss of the heating assembly can be reduced, and the energy consumption of the aerosol generating device is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and particularly relates to a heating component and an aerosol generating device. Background Art

[0002] An aerosol generating device includes a heating component, and the heating component can heat an aerosol forming substrate to generate aerosol for use by a user.

[0003] The heating component generally has two heating methods: direct contact heating and hot air flow heating. In order to make up for the disadvantage of uneven heating of the aerosol forming substrate caused by direct contact heating, there is currently an aerosol generating device that combines the two heating methods of direct contact heating and hot air flow heating.

[0004] The heating component of the aerosol generating device includes a heating tube. The heating tube has a receiving section and a heat exchange section in its axial direction. The receiving section is used to receive the aerosol forming substrate and heats the aerosol forming substrate by direct contact. There is a heat exchange element in the heat exchange section, and there is a heat exchange air passage on the heat exchange element. The heating tube is in contact with the heat exchange element, and the heat is transferred to the air flowing through the heat exchange air passage through the heat exchange element to heat the aerosol forming substrate by hot air flow.

[0005] However, in the current aerosol generating device, during the process of heat transfer from the heating tube to the radial outside, it is easy to cause more heat loss of the heating component, resulting in higher energy consumption of the aerosol generating device. Summary of the Utility Model

[0006] The present application provides a heating component and an aerosol generating device to solve the technical problems of more heat loss of the heating component and higher energy consumption of the aerosol generating device.

[0007] According to a first aspect, in one embodiment, a heating component is provided, which is characterized in that it has an air inlet section and an air outlet section arranged in a first direction, and the heating component includes:

[0008] A heating element having an air inlet, an air outlet, and an air flow channel. The air inlet is located in the air inlet section, the air outlet is located in the air outlet section, and the air flow channel connects the air inlet and the air outlet;

[0009] A heat conducting member connected to the outside of the heating element. The wall surface of the heat conducting member is provided with through holes corresponding to the air inlet and the air outlet. The heat conducting member has a heat conducting surface arranged away from the heating element in the air outlet section, and the heat conducting surface is used to contact the aerosol forming substrate.

[0010] In an alternative embodiment, the air flow channel includes a first channel and a second channel. The first channel communicates with the air inlet and extends in the first direction. The second channel communicates with the air outlet and extends in a direction away from the first channel.

[0011] In an alternative embodiment, there are a plurality of the second channels and a plurality of the air outlets, and the second channels and the air outlets correspond to each other one by one; two adjacent second channels are arranged at intervals in the first direction and / or around the first channel.

[0012] In an alternative embodiment, the heating element includes a first tube body and a second tube body. The first tube body extends in the first direction, the first channel is located inside the first tube body, and the air inlet is located on the first tube body; the second channel is located inside the second tube body. The second tube body has a connection end and an outlet end at both ends in its length direction. The connection end is connected to the first tube body, and the air outlet is located at the outlet end.

[0013] In an alternative embodiment, the first tube body has an open end and a closed end at both ends in its length direction, and the air inlet is located at the open end.

[0014] In an alternative embodiment, the second tube body is arranged gradually away from the air inlet from the connection end to the outlet end.

[0015] In an alternative embodiment, the end face of the outlet end on the second tube body is coplanar with the heat conducting surface.

[0016] In an alternative embodiment, the air outlet section has a tip at the end in the first direction, and the tip is used for inserting into the aerosol generating substrate.

[0017] In an alternative embodiment, the heating element has magnetism and can generate heat in an alternating magnetic field; and / or, the heat conducting element includes a ceramic element, and the heat conducting element is integrally sintered and fixed on the heating element.

[0018] According to a second aspect, an embodiment provides an aerosol generating device, including a device main body and the heating assembly according to any one of the above. The heating assembly is installed on the device main body. The device main body has a gas inlet and a containing cavity for containing an aerosol generating substrate. The heating assembly extends towards the inside of the containing cavity, and the air flow channel communicates the gas inlet with the containing cavity.

[0019] According to the heating component and the aerosol generating device of the above-mentioned embodiment, the heating component has an air inlet section and an air outlet section arranged in a first direction, the heating component includes a heating element and a heat-conducting element, the heating element has an air inlet, an air outlet and an air flow channel, the air inlet is located in the air inlet section, the air outlet is located in the air outlet section, and the air flow channel connects the air inlet and the air outlet; the heat-conducting element is connected to the outside of the heating element, the wall surface of the heat-conducting element is through-set at the positions corresponding to the air inlet and the air outlet, the heat-conducting element has a heat-conducting surface arranged away from the heating element in the air outlet section, and the heat-conducting surface is used to contact with the aerosol generating matrix; in this way, The heat of the heating element can be transferred inwardly to the air flow flowing through the air flow channel to form a hot air flow. After being discharged from the air outlet section, the hot air flow can enter the aerosol generating matrix, thereby heating the aerosol generating matrix in the form of a hot air flow. The heat of the heating element can be directly transferred outwardly through the heat conductive element to the aerosol generating matrix in contact with the heat conductive surface. The heat of the heating element is transferred to the aerosol generating matrix inwardly and outwardly in different ways, which helps to improve the heat utilization rate of the heating element and the entire heating component, can reduce the heat loss of the heating component, and reduce the energy consumption of the aerosol generating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of an aerosol generating device in an embodiment;

[0021] Figure 2 A schematic diagram of the internal structure of an aerosol generating device in one embodiment;

[0022] Figure 3 Schematic diagram of the structure of a heating component in an embodiment.

[0023] In the figure:

[0024] 1. Heating assembly; 11. Air inlet section; 12. Air outlet section; 13. Heat generating element; 131. Air inlet; 132. Air outlet; 133. Air flow channel; 1331. First channel; 1332. Second channel; 134. First tube body; 135. Second tube body; 14. Heat conducting element; 141. Heat conducting surface;

[0025] 2. Device body; 21. Suction nozzle; 22. Shell; 221. Cavity; 222. Cylinder structure; 23. Support; 231. Through hole; 24. Installation cavity; 25. Accommodating cylinder; 251. Accommodating cavity; 26. Snap structure; 3. Induction coil. DETAILED DESCRIPTION

[0026] The present application will be further described in detail below with reference to specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are denoted by related similar element numbers. In the following embodiments, many details are described to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification to avoid overwhelming the core part of the present application with excessive description. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0027] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operation steps involved in each embodiment can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the specification and the drawings are only for clearly describing a certain embodiment and do not mean that they are essential components and / or sequences.

[0028] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0029] An embodiment of the present application discloses a heating component 1, which is applied in an aerosol generating device and is used to heat an aerosol generating substrate to generate an aerosol.

[0030] For the heating component 1 of the embodiment of the present application, please refer to Figure 2 and Figure 3 , which has an air inlet section 11 and an air outlet section 12 arranged in a first direction. The first direction can be understood as the insertion direction or extension direction of the aerosol generating substrate, or can also be understood as the discharge direction of the aerosol. The air inlet section 11 is located upstream of the air outlet section 12 in the aerosol discharge direction; the air inlet section 11 and the air outlet section 12 can be divided according to the position of the heating component 1 in the aerosol generating device. The air outlet section 12 is located in the accommodation cavity 251 of the aerosol generating device to supply hot air to discharge and enter the aerosol generating substrate, and the air inlet section 11 is located outside the accommodation cavity 251 of the aerosol generating device to supply external cold air into the heating component 1.

[0031] The heating component 1 includes a heating element 13 and a heat conducting member 14. The heating element 13 has an air inlet 131, an air outlet 132, and an air flow channel 133. The air inlet 131 is located in the intake section 11 in the first direction, the air outlet 132 is located in the outlet section 12 in the first direction, and the air flow channel 133 is located between the air inlet 131 and the air outlet 132 and connects the air inlet 131 and the air outlet 132.

[0032] The heat conducting member 14 is connected to the outside of the heating element 13. In one embodiment, please refer to Figure 2 , the material of the heat conducting member 14 includes ceramic materials, such as zirconia and / or alumina, etc. The heat conducting member 14 can be fixed to the outside of the heating element 13 by coating a ceramic slurry on the heating element 13 and sintering the ceramic slurry. Or in other embodiments, the heat conducting member 14 can also be made of other materials with better heat conduction performance, and the heat conducting member 14 can also be fixed to the outside of the heating element 13 by means of gluing or snap connection, or the heat conducting member 14 can be elastically sleeved on the outside of the heating element 13.

[0033] In one embodiment, please continue to refer to Figure 2 and Figure 3 , the wall surface of the heat conducting member 14 is provided with through holes corresponding to the air inlet 131 and the air outlet 132. The channel wall of the air flow channel 133 on the heating element 13 passes through the heat conducting member 14 at the air inlet 131 and the air outlet 132, that is, the air inlet 131 and the air outlet 132 on the heating element 13 are both exposed outside the heat conducting member 14. The external air flow can directly enter the air flow channel 133 from the air inlet 131 on the heating element 13 and be discharged from the air outlet 132 without being affected by the heat conducting member 14.

[0034] The heat conducting member 14 has a heat conducting surface 141 arranged away from the heating element 13 in the outlet section 12. It can be understood that the heat conducting member 14 has a contact surface in contact with the heating element 13, and the heat conducting surface 141 is arranged opposite to the contact surface. The heat on the heating element 13 can be transferred to the heat conducting surface 141 of the heat conducting member 14 through the heat conducting member 14. Since the heat conducting surface 141 is in contact with the aerosol generation matrix, the heat on the heating element 13 can be transferred to the aerosol generation matrix through the heat conducting surface 141 on the heat conducting member 14 to heat the aerosol generation matrix by direct contact.

[0035] And since the heat conducting surface 141 in contact with the aerosol generation matrix is arranged in the outlet section 12 of the heating component 1, and the air outlet 132 on the heating element 13 is also arranged in the outlet section 12, then the hot air flow flowing through the air flow channel 133 and heated by the heating element 13 can directly enter the aerosol generation matrix after being discharged from the air outlet 132 to heat the aerosol generation matrix by means of the hot air flow.

[0036] The heat of the heating element 13 is transferred inward to the air flow passing through the air flow channel 133 to form a hot air flow. After the hot air flow is discharged from the air outlet 132, it can heat the aerosol generation matrix. The heat of the heating element 13 is transferred outward to the heat conducting member 14, and the aerosol generation matrix is heated by the direct contact between the heat conducting surface 141 of the heat conducting member 14 and the aerosol generation matrix. In this way, the heat of the heating element 13 can be used to heat the aerosol generation matrix both during the inward and outward heat transfer processes, which helps to improve the heat utilization rate of the heating element 13 and the entire heating assembly 1, reduce the heat loss of the heating assembly 1, and lower the energy consumption of the aerosol generating device.

[0037] In one embodiment, please refer to Figure 2 and Figure 3 , in the heating element 13, the air flow channel 133 includes a first channel 1331 extending in a first direction, and further includes a second channel 1332 communicating with the first channel 1331. The first channel 1331 communicates with the air inlet 131, the second channel 1332 communicates with the air outlet 132, and the second channel 1332 extends away from the channel wall of the first channel 1331.

[0038] The cross-sectional area of the first channel 1331 is larger than that of the second channel 1332. The first channel 1331 is the main channel, and the second channel 1332 can be understood as a branch channel connected to the channel wall of the first channel 1331. The first channel 1331 is mainly used to increase the contact area between the air flow and the heating element 13 to improve the heat transfer efficiency between the air flow and the heating element 13. The second channel 1332 is mainly used to lead the hot air flow formed in the first channel 1331 from the air outlet 132 into the aerosol generation matrix to heat the aerosol generation matrix through the hot air flow.

[0039] Of course, in other embodiments, it is also possible to only provide the first channel 1331 and make the first channel 1331 communicate the air inlet 131 and the air outlet 132.

[0040] In one embodiment, please refer to Figure 2, in order to increase the heat exchange amount between the heating element 13 and the aerosol-forming substrate by the hot air heating method, a plurality of second channels 1332 and air outlets 132 can be provided in the heating element 13. The second channels 1332 and the air outlets 132 correspond one by one. The second channels 1332 communicate the first channels 1331 and the corresponding air outlets 132, and adjacent two second channels 1332 are arranged at intervals in the first direction, and adjacent two air outlets 132 are arranged at intervals in the first direction; or in other embodiments, it can also be set that adjacent two second channels 1332 are arranged at intervals around the first channel 1331, and adjacent two air outlets 132 are arranged at intervals around the first channel 1331, so as to increase the air flow rate in the air flow channel 133, thereby improving the heating efficiency of the heat of the heating element 13 to the aerosol-forming substrate by the hot air heating method.

[0041] And since adjacent two air outlets 132 are arranged at intervals, this satisfies that the hot air flow has different discharge directions, and the hot air flow can enter the aerosol-forming substrate in different directions to heat the aerosol-forming substrate, which helps to ensure the heating uniformity of the aerosol-forming substrate.

[0042] In one embodiment, in order to increase the heat exchange amount between the heating element 13 and the aerosol-forming substrate by the hot air heating method, a plurality of first channels 1331 can also be provided. The number of the first channels 1331 can be equal to or less than the number of the second channels 1332, so that the contact area and heat exchange efficiency between the air flow and the heating element 13 can be increased through the plurality of first channels 1331.

[0043] Or in other embodiments, in the structure without the second channels 1332, the cross-sectional area of the air outlet 132 can be increased to expand the discharge amount of the hot air flow, so as to satisfy that the hot air flow can enter the aerosol-forming substrate in different directions to improve the heating uniformity of the aerosol-forming substrate.

[0044] In one embodiment, please continue to refer to Figure 2 and Figure 3 , the heating element 13 includes a first pipe body 134 and a second pipe body 135. The first pipe body 134 extends in the first direction. The first channel 1331 is located in the first pipe body 134, and the air inlet 131 is located on the first pipe body 134. The second channel 1332 is located in the second pipe body 135. Both ends of the second pipe body 135 in its extending direction are open. The second pipe body 135 has a connection end and an outlet end at both ends in its extending direction. The connection end of the second pipe body 135 is connected to the pipe wall of the first pipe body 134, and the second pipe body 135 communicates with the first pipe body 134. The air outlet 132 is located at the outlet end of the second pipe body 135.

[0045] Of course, in an embodiment where the air flow channel 133 only includes the first channel 1331, the heating element 13 may only include the first tube body 134. The first tube body 134 has an open end and a closed end at both ends in its extending direction. The air inlet 131 is provided at the open end, and the air outlet 132 is provided on the tube wall near the closed end.

[0046] In one embodiment, please continue to refer to Figure 2 and Figure 3 , the first tube body 134 has an open end and a closed end at both ends in the first direction. The closed end is located on the side where the air outlet section 12 is located, and the open end is located on the side where the air inlet section 11 is located. The air inlet 131 of the heating element 13 is provided at the open end in the first direction. The opening of the open end can form the air inlet 131 of the heating element 13. Such a setting eliminates the need to additionally provide the air inlet 131 on the first tube body 134, facilitating the processing of the heating element 13. In other embodiments, the open end of the heating element 13 can be blocked by other structures in the aerosol generating device, and the air inlet 131 on the heating element 13 can be provided on the tube wall of the first tube body 134.

[0047] In one embodiment, please continue to refer to Figure 2 , the second tube body 135 gradually moves away from the air inlet 131 on the first tube body 134 from the connection end to the outlet end in its extending direction. The central axis of the second tube body 135 is arranged at an acute angle with the central axis of the first tube body 134. Such a setting helps to reduce the air resistance and facilitates the flow of air in the air flow channel 133.

[0048] Of course, in other embodiments, it is also possible if the central axis of the second tube body 135 is perpendicularly arranged with the central axis of the first tube body 134.

[0049] In one embodiment, please refer to Figure 2 and Figure 3 , the end face of the outlet end of the second tube body 135 is coplanar with the heat conducting surface 141 of the heat conducting member 14 facing away from the heating element 13. Such a setting facilitates the entire heating assembly 1 to penetrate into the aerosol generating matrix. Of course, in other embodiments, it is also allowed if the distance between the end face of the outlet end of the second tube body 135 and the central axis of the first tube body 134 is greater than the distance between the heat conducting surface 141 and the central axis of the first tube body 134, as long as the setting of the heat conducting member 14 does not affect the discharge of the hot air flow from the air outlet 132 on the second tube body 135.

[0050] In one embodiment, please refer to Figure 2 and Figure 3, the closed end of the first tube body 134 is located in the air outlet section 12. The closed end is a tip, and correspondingly, the heat conducting member 14 covering the closed end of the first tube body 134 also forms a tip at the end of the air outlet section 12. This tip facilitates the entire heating component 1 to penetrate into the aerosol generation matrix. This helps to increase the contact area between the heating component 1 and the aerosol generation matrix, and helps to improve the heat transfer efficiency between the heating component 1 and the aerosol generation matrix.

[0051] In other embodiments, the air outlet section 12 on the heating component 1 has an end face located at the end in the first direction. This end face is used to contact the aerosol generation matrix. The air outlet 132 is arranged on the end face of the closed end of the first tube body 134. The edge of the air outlet 132 on the first tube body 134 passes through the heat conducting member 14, so as to facilitate the gas discharged from the air outlet 132 to enter into the aerosol generation matrix, realizing the heating of the aerosol generation matrix.

[0052] In one embodiment, please refer to Figure 2 and Figure 3 , the heating element 13 has magnetism. The heating element 13 can be made of soft magnetic material, such as SUS430 or can also be made of cold-rolled carbon steel for deep drawing. The heating element 13 can generate heat in an alternating magnetic field, providing a heat source for heating the aerosol generation matrix.

[0053] In other embodiments, the heating element 13 can also be made of a conductive material. The heating element 13 is electrically connected to an external power supply component. After the heating element 13 is powered on, it generates heat, providing a heat source for heating the aerosol generation matrix.

[0054] The embodiment of the present application further provides an aerosol generating device, which includes a device main body 2 and the heating component 1 in any of the above embodiments. The heating component 1 is installed on the device main body 2. The device main body 2 has a gas inlet (not shown in the figure) and a containing cavity 251. The containing cavity 251 is used to contain the aerosol generation matrix. The heating component 1 extends towards the inside of the containing cavity 251, and the air flow channel 133 communicates the gas inlet and the containing cavity 251.

[0055] Please refer to Figure 2 , the device main body 2 includes a mouthpiece 21, a housing 22, a support 23 and a containing cylinder 25. The housing 22 has a cavity 221 and an opening communicating with the cavity 221. The housing 22 has a cylindrical structure 222 extending towards the inside of the cavity 221 at the opening. The support 23 is located in the cavity 221. The support 23 is in sealing cooperation with the cylindrical structure 222, so that the housing 22, the cylindrical structure 222 and the support 23 enclose an inner concave part. The mouthpiece 21 is connected to the housing 22 at the opening of the housing 22. The mouthpiece 21 covers the opening of the inner concave part to enclose an installation cavity 24 with the inner concave part.

[0056] The receiving cylinder 25 is located within the installation cavity 24 and can be installed on the cavity wall of the installation cavity 24 through a snap structure 26. In one embodiment, the receiving cylinder 25 is connected to the nozzle 21 through the snap structure 26. Protrusions are provided on the cylinder wall of the receiving cylinder 25 and the inner side wall of the cylinder body structure 222. During the connection process of the nozzle 21 and the housing 22, the protrusion on the receiving cylinder 25 passes over the protrusion on the cylinder body structure 222, and the protrusion on the receiving cylinder 25 and the protrusion on the cylinder body structure 222 abut against each other in the extending direction of the receiving cylinder 25 to limit the position of the receiving cylinder 25 within the installation cavity 24.

[0057] One end of the receiving cylinder 25 is open and the other end is closed in its extending direction. A receiving cavity 251 is formed within the receiving cylinder 25. The opening of the receiving cylinder 25 is in communication with the opening of the nozzle 21, and the aerosol generating substrate can be inserted into the receiving cavity 251 from the opening of the nozzle 21.

[0058] The heating assembly 1 is installed on the support 23. The heating assembly 1 passes through the bottom wall of the receiving cylinder 25 and extends towards the inside of the receiving cavity 251 for piercing into the aerosol generating substrate. The portion of the heating assembly 1 located within the receiving cavity 251 forms an air outlet section 12, and the portion located outside the receiving cavity 251 forms an air inlet section 11.

[0059] In one embodiment, the opening at the open end of the first tube body 134 on the heating assembly 1 forms the air inlet 131 of the heating assembly 1. The housing 22 has a gas inlet, and the support 23 has a through hole 231. The through hole 231 communicates the gas inlet with the air inlet 131 of the heating assembly 1. The external cold air flow can enter the air flow channel 133 of the heating assembly 1 from the gas inlet along the through hole 231 of the support 23, be heated by the heating element 13, and then enter the receiving cavity 251 from the air outlet 132 to achieve heating of the aerosol generating substrate.

[0060] In other embodiments, the support 23 is not provided with a through hole 231. The opening provided on the tube wall of the first tube body 134 in the air inlet section 11 forms the air inlet 131, and the air inlet 131 is in communication with the installation cavity 24. A gas inlet in communication with the installation cavity 24 is formed by enclosing between the nozzle 21 and the housing 22. The external cold air flow can enter the air flow channel 133 from the gas inlet, sequentially along the installation cavity 24 and the air inlet 131, be heated by the heating element 13, and then enter the receiving cavity 251 from the air outlet 132 to achieve heating of the aerosol generating substrate.

[0061] In one embodiment, the heating element 13 has magnetism, and the heating assembly 1 is configured with an induction coil 3. The induction coil 3 is sleeved outside the cylinder body structure 222. After the induction coil 3 is energized, it can generate an alternating magnetic field, and the heating element 13 can generate heat under the action of the alternating magnetic field. In other embodiments, the induction coil 3 may not be provided, and the heating element 13 generates heat after being energized.

[0062] The above uses specific examples to elaborate on the present utility model, which is only used to help understand the present utility model and is not intended to limit the present utility model. For those skilled in the technical field to which the present utility model pertains, based on the idea of the present utility model, several simple deductions, deformations or substitutions can also be made.

Claims

1. A heating component, characterized in that: The heating assembly has an air inlet section and an air outlet section arranged in a first direction, and comprises: A heating element, comprising an air inlet, an air outlet and an air flow channel, wherein the air inlet is located in the air inlet section, the air outlet is located in the air outlet section, and the air flow channel connects the air inlet and the air outlet; A heat-conducting member is connected to the outside of the heating member, and the wall surface of the heat-conducting member is through-set at positions corresponding to the air inlet and the air outlet. The heat-conducting member has a heat-conducting surface arranged away from the heating member in the air outlet section, and the heat-conducting surface is used to contact the aerosol generating matrix.

2. The heating assembly according to claim 1, characterized in that The air flow channel includes a first channel and a second channel, the first channel is communicated with the air inlet, the first channel extends in the first direction, the second channel is communicated with the air outlet, and the second channel extends in a direction away from the first channel.

3. The heating assembly according to claim 2, characterized in that A plurality of the second channels and the air outlets are provided, and the second channels correspond to the air outlets one by one; two adjacent second channels are arranged in the first direction and / or around the first channel at intervals.

4. The heating assembly according to claim 2, characterized in that The heat generating element comprises a first tube body and a second tube body, the first tube body extending in the first direction, the first channel being located in the first tube body, and the air inlet being located on the first tube body; the second channel being located in the second tube body, the second tube body having a connecting end and an outlet end located at both ends in the length direction thereof, the connecting end being connected to the first tube body, and the air outlet being located at the outlet end.

5. The heating assembly according to claim 4, characterized in that The first tube body has an open end and a closed end located at both ends in the length direction thereof, and the air inlet is located at the open end.

6. The heating assembly according to claim 4, characterized in that The second tube is arranged gradually away from the air inlet from the connecting end to the outlet end.

7. The heating assembly according to claim 4, characterized in that The end surface of the outlet end of the second tube body is coplanar with the heat conducting surface.

8. The heating assembly according to any one of claims 1 to 7, characterized in that The gas outlet section has a tip located at the end of the first direction, and the tip is used for inserting into the aerosol generating matrix.

9. The heating assembly according to any one of claims 1 to 7, characterized in that: The heating element is magnetic and can generate heat in an alternating magnetic field; and / or the heat-conducting element comprises a ceramic element, and the heat-conducting element is integrally sintered and fixed on the heating element.

10. An aerosol generating device, characterized in that: It comprises a device body and a heating component as described in any one of claims 1 to 9, wherein the heating component is mounted on the device body, the device body has a gas inlet and a accommodating cavity, the accommodating cavity is used to accommodate an aerosol generating matrix, the heating component extends toward the accommodating cavity, and the airflow channel connects the gas inlet and the accommodating cavity.

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