Aerosol generating rod heating structure and aerosol generating device

Abstract

The utility model relates to the technical field of aerosol generating devices, in particular to an aerosol generating rod heating structure capable of heating an aerosol generating rod in a segmented mode and an aerosol generating device. The outer wall of the aerosol generating rod can be heated through the contact heating pipe, airflow entering the aerosol generating rod can be heated through the airflow heating piece, and therefore the interior of the aerosol generating rod is heated. As the contact heating pipe and the airflow heating piece are connected through the heat insulation connecting piece, heat between the contact heating pipe and the airflow heating piece is blocked by the heat insulation connecting piece, the heat conduction speed between the contact heating pipe and the airflow heating piece is reduced, and the temperature difference control range between the contact heating pipe and the airflow heating piece can be enlarged; therefore, the experience of the user in sucking aerosol is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aerosol generating devices, and in particular to an aerosol generating rod heating structure capable of heating the aerosol generating rod in sections and an aerosol generating device. Background Art

[0002] The aerosol generating device is used to heat the aerosol generating rod so that the aerosol generating rod generates aerosol for the user to inhale. The current aerosol generating device includes a heating tube, and the heating tube includes a contact heating section in contact with the outer wall of the aerosol generating rod and an airflow heating section for heating the airflow, wherein a heat exchanger is arranged in the airflow heating section, and heat is transferred to the heat exchanger through the airflow heating tube, and then the airflow flowing through the heat exchanger is heated, and the heated airflow enters the aerosol generating rod to heat the aerosol generating rod more evenly. In order to improve the taste of the aerosol, it is usually necessary to set a certain heating temperature difference between the airflow heating section and the contact heating section. Since the airflow heating section and the contact heating section are currently an integral structure for heat transfer, the heat transfer between them is relatively fast, so that the adjustable temperature difference range between the airflow heating section and the contact heating section is small, resulting in a technical problem that the user has a poor experience in inhaling the aerosol. Utility Model Content

[0003] The utility model provides an aerosol generating rod heating structure, which is used to improve the problem of poor user experience caused by fast heat conduction between an airflow heating section and a contact heating section in the current aerosol generating device.

[0004] In addition, the purpose of the present utility model is to provide an aerosol generating device using the above-mentioned aerosol generating rod heating structure.

[0005] In a first aspect, an embodiment provides an aerosol generating rod heating structure, comprising a contact heating tube, an airflow heating element, and a heat insulating connecting element;

[0006] The contact heating tube is for inserting the aerosol generating rod, and the inner wall of the contact heating tube is used for thermally contacting with the outer wall of the aerosol generating rod to heat the aerosol generating rod;

[0007] The airflow heating element has a heat exchange channel, and the heat exchange channel is used to heat the airflow passing therethrough; the heat exchange channel is communicated with the tube hole of the contact heating tube, so that the airflow heated by the heat exchange channel can enter the aerosol generating rod;

[0008] The heat-insulating connector connects the contact heating tube and the airflow heating element, and is used to block heat conduction between the contact heating tube and the airflow heating element.

[0009] Furthermore, in one embodiment, the airflow heating element includes an airflow heating tube and a heat exchanger, the heat exchanger is arranged in the airflow heating tube and is in thermal contact with the airflow heating tube, and the heat exchange channel is arranged on the heat exchanger.

[0010] Furthermore, in one embodiment, the thermal insulation connector is a connecting tube, the contact heating tube is plugged into one end of the connecting tube, and the airflow heating tube is plugged into the other end of the connecting tube.

[0011] Furthermore, in one embodiment, the connecting tube includes a tube body and a heat-insulating protrusion located in the tube body, and the heat-insulating protrusion is in conflict with the airflow heating tube on one side of the connecting tube in the axial direction and in conflict with the contact heating tube on the other side.

[0012] Furthermore, in one embodiment, the thermal insulation protrusion is a thermal insulation protrusion ring.

[0013] Furthermore, in one embodiment, the contact heating tube and the connecting tube are interference fit and / or the airflow heating tube and the connecting tube are interference fit.

[0014] Furthermore, in one embodiment, the airflow heating element includes a flow guider, which is installed on the heat exchange body and is used to abut against the end surface of the aerosol generating rod.

[0015] Furthermore, in one embodiment, the aerosol generating rod heating structure includes a base and a heating tube bracket, one end of the contact heating tube is arranged on the heating tube bracket, and the other end is connected to the thermal insulation connecting piece, and the airflow heating piece is connected between the base and the thermal insulation connecting piece.

[0016] Furthermore, in one embodiment, the aerosol generating rod heating structure includes a power supply circuit, and the contact heating tube and the airflow heating element are both connected to the power supply circuit, and the power supply circuit can supply power to any one of the contact heating tube and the airflow heating element separately, so that the contact heating tube and the airflow heating element can generate heat independently.

[0017] In a second aspect, an embodiment provides an aerosol generating device, comprising a device shell and an aerosol generating rod heating structure, wherein the aerosol generating rod heating structure is in the device shell; the aerosol generating rod heating structure comprises a contact heating tube, an airflow heating element and a heat insulating connecting element;

[0018] The contact heating tube is for inserting the aerosol generating rod, and the inner wall of the contact heating tube is used for thermally contacting with the outer wall of the aerosol generating rod to heat the aerosol generating rod;

[0019] The airflow heating element has a heat exchange channel, and the heat exchange channel is used to heat the airflow passing therethrough; the heat exchange channel is communicated with the tube hole of the contact heating tube, so that the airflow heated by the heat exchange channel can enter the aerosol generating rod;

[0020] The heat-insulating connector connects the contact heating tube and the airflow heating element, and is used to block heat conduction between the contact heating tube and the airflow heating element.

[0021] Furthermore, in one embodiment, the airflow heating element includes an airflow heating tube and a heat exchanger, the heat exchanger is arranged in the airflow heating tube and is in thermal contact with the airflow heating tube, and the heat exchange channel is arranged on the heat exchanger.

[0022] Furthermore, in one embodiment, the thermal insulation connector is a connecting tube, the contact heating tube is plugged into one end of the connecting tube, and the airflow heating tube is plugged into the other end of the connecting tube.

[0023] Furthermore, in one embodiment, the contact heating tube is plugged into one end of the connecting tube, and the airflow heating tube is plugged into the other end of the connecting tube. The connecting tube includes a tube body and a heat-insulating protrusion in the tube body. The heat-insulating protrusion is in conflict with the airflow heating tube on one side in the axial direction of the connecting tube, and is in conflict with the contact heating tube on the other side.

[0024] Furthermore, in one embodiment, the thermal insulation protrusion is a thermal insulation protrusion ring.

[0025] Furthermore, in one embodiment, the contact heating tube and the connecting tube are interference fit and / or the airflow heating tube and the connecting tube are interference fit.

[0026] Furthermore, in one embodiment, the airflow heating element includes a flow guider, which is installed on the heat exchange body and is used to abut against the end surface of the aerosol generating rod.

[0027] Furthermore, in one embodiment, the aerosol generating rod heating structure includes a base and a heating tube bracket, one end of the contact heating tube is arranged on the heating tube bracket, and the other end is connected to the thermal insulation connecting piece, and the airflow heating piece is connected between the base and the thermal insulation connecting piece.

[0028] Furthermore, in one embodiment, the aerosol generating rod heating structure includes a power supply circuit, and the contact heating tube and the airflow heating element are both connected to the power supply circuit, and the power supply circuit can supply power to any one of the contact heating tube and the airflow heating element separately, so that the contact heating tube and the airflow heating element can generate heat independently.

[0029] According to the aerosol generating rod heating structure of the above embodiment, the outer wall of the aerosol generating rod can be heated by the contact heating tube, and the airflow heating element can heat the airflow entering the aerosol generating rod, thereby heating the inside of the aerosol generating rod. Since the heat insulating connector connects the contact heating tube to the airflow heating element, the heat between the contact heating tube and the airflow heating element is blocked by the heat insulating connector, which reduces the heat conduction speed between the contact heating tube and the airflow heating element, and can increase the temperature difference control range between the contact heating tube and the airflow heating element, thereby improving the user's experience of inhaling aerosol. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is an exploded view of an aerosol generating device in one embodiment;

[0031] Figure 2 A schematic diagram of the structure of an aerosol generating rod heating structure in one embodiment;

[0032] Figure 3 A front view of an aerosol generating rod heating structure in one embodiment;

[0033] Figure 4 For along Figure 3 Sectional view of AA in the middle;

[0034] Figure 5 A schematic diagram of the structure after the heat-insulating connector connects the contact heating tube and the airflow heating element in one embodiment;

[0035] Figure 6 A cross-sectional view of an embodiment after the heat insulation connector, the contact heating pipe and the air flow heating element are installed;

[0036] Figure 7 Schematic diagram of the structure of a thermal insulation connector in an embodiment.

[0037] List of feature names corresponding to the figure marks in the figure: 1. Device shell; 2. Aerosol generating rod heating structure; 21. Contact heating tube; 22. Airflow heating element; 221. Heat exchange channel; 222. Airflow heating tube; 223. Heat exchange body; 2231. Mounting flange; 224. Drain; 2241. Vent; 23. Thermal insulation connector; 230. Connecting tube; 231. Tube body; 232. Thermal insulation protrusion; 2321. First side; 2322. Second side; 24. Base; 25. Heating tube bracket; 251. Protective cover; 26. Sealing ring; 3. Aerosol generating rod; 31. Suction end; 32. Air inlet end; 4. Power supply; 5. Circuit board.

[0038] Explanation on the reference numerals in brackets in the drawings: In the reference numerals in brackets in the drawings, the features referred to by the reference numerals are both the features represented by the numbers in the brackets and the features represented by the numbers outside the brackets. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. 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, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and 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.

[0040] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0041] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0042] In one embodiment, please refer to Figures 1 to 6 The aerosol generating device comprises a device shell 1 and an aerosol generating rod heating structure 2, wherein the aerosol generating rod heating structure 2 is located in the device shell 1. The device shell 1 has a power source 4 for supplying power to the aerosol generating rod heating structure 2. In one embodiment, the power source 4 comprises a battery for supplying power to the aerosol generating rod heating structure 2.

[0043] Please refer to Figures 1 to 4The aerosol generating rod heating structure 2 comprises a contact heating tube 21, an airflow heating member 22 and a heat-insulating connecting member 23, wherein the contact heating tube 21 is inserted into the aerosol generating rod 3, and the inner wall of the contact heating tube 21 is used for heat-conducting contact with the outer wall of the aerosol generating rod 3 to heat the aerosol generating rod 3. The airflow heating member 22 has a heat exchange channel 221, and the heat exchange channel 221 is used to heat the airflow passing through. The heat exchange channel 221 is communicated with the tube hole of the contact heating tube 21, so that the airflow heated by the heat exchange channel 221 can enter the aerosol generating rod 3, thereby heating the inside of the aerosol generating rod 3.

[0044] In order to reduce the heat conduction speed between the airflow heating element 22 and the contact heating tube 21, please refer to Figure 4 and Figure 5 The heat-insulating connector 23 connects the contact heating tube 21 and the airflow heating element 22, and is used to block the heat transfer between the contact heating tube 21 and the airflow heating element 22. Since the heat between the contact heating tube 21 and the airflow heating element 22 is blocked by the heat-insulating connector 23, the heat conduction speed between the contact heating tube 21 and the airflow heating element 22 is reduced, and the temperature difference control range between the contact heating tube 21 and the airflow heating element 22 can be increased, thereby improving the user's experience of inhaling aerosol.

[0045] For aerosol generating stick 3, please refer to Figure 1 The aerosol generating stick 3 has a suction end 31 at one end and an air inlet end 32 at the other end. The suction end 31 has a suction nozzle for the user to inhale, and the air inlet end 32 is used to supply gas to enter the aerosol generating stick 3 when the aerosol generating stick 3 is inhaled. The aerosol generating stick 3 contains an aerosol generating matrix. The aerosol generating matrix is ​​an aerosol filament or an aerosol sheet for generating aerosol. The aerosol generating stick 3 is heated by the aerosol generating device, so that the aerosol generating stick 3 can generate aerosol after heating.

[0046] The airflow heating element 22 can be implemented in any feasible manner. For example, in one embodiment, please refer to Figure 4 and Figure 6 The airflow heating element 22 includes an airflow heating tube 222 and a heat exchanger 223. The heat exchanger 223 is disposed in the airflow heating tube 222 and is in heat-conducting contact with the airflow heating tube 222. The heat exchange channel 221 is disposed on the heat exchanger 223. For another example, in one embodiment, the airflow heating tube 222 and the heat exchanger 223 are integrally formed. In this case, the heat exchanger 223 and the airflow heating tube 222 can be made of a resistive heating material, such as a conductive ceramic material or a conductive carbon material. In one embodiment, please refer to Figure 4 and Figure 6 The heat exchange channels 221 are heat exchange holes opened on the heat exchange body 223. The number of the heat exchange channels 221 can be increased or decreased as needed, and the heat exchange channels 221 can be arranged on the heat exchange body 223 in a honeycomb shape.

[0047] Specifically, in one embodiment, the airflow heating tube 222 and the contact heating tube 21 can adopt any feasible heating tube. For example, in one embodiment, the heating tube includes a heat-conducting tube and a heating film covering the outer wall of the heat-conducting tube. The heating film generates heat after being energized. After the heat-conducting tube is heated up, it can transfer the heat to the aerosol generating rod 3 or the heat exchanger. For another example, in one embodiment, a heating wire can also be surrounded outside the heat-conducting tube, and the heating wire generates heat after being energized. For another example, in one embodiment, in addition to surrounding the heating wire outside the heat-conducting tube, a heating wire can also be embedded in the heat-conducting tube. For another example, in one embodiment, a heating wire or a heating film can also be covered on the inner wall of the heat-conducting tube. For another example, in one embodiment, in addition to the combination of the above-mentioned heat-conducting tube and the heating element, the heating tube can also adopt an integrally formed resistive heating element, such as a conductive ceramic tube, a carbon tube, etc. For another example, in one embodiment, the first heating tube can also adopt a magnetic induction heating tube.

[0048] In one embodiment, please refer to Figures 4 to 6 The heat-insulating connector 23 is a connecting tube 230, the contact heating tube 21 is plugged into one end of the connecting tube 230, and the airflow heating tube 222 is plugged into the other end of the connecting tube 230. The reliability of connecting the contact heating tube 21 and the airflow heating element 22 through the connecting tube 230 is better. In some other embodiments, in addition to the plug-in method, the heat-insulating connector 23 can also be connected to the airflow heating tube 222 and the contact heating tube 21 by docking, one end of the heat-insulating connector 23 is docked with the airflow heating tube 222, and the other end is docked with the contact heating tube 21. Specific docking methods include bonding, welding, etc. In some other embodiments, the heat-insulating connector 23 can also be a connecting plate. In order not to affect the airflow ventilation, vents should be opened on the connecting plate.

[0049] Further, in one embodiment, please refer to Figures 4 to 7 , the contact heating tube 21 is inserted into the connecting tube 230, and the airflow heating tube 222 is inserted into the connecting tube 230. The connecting tube 230 includes a tube body 231 and a heat-insulating protrusion 232 in the tube body 231. One side of the heat-insulating protrusion 232 in the axial direction of the connecting tube 230 is a first side 2321, and the first side 2321 conflicts with the airflow heating tube 222. The other side is a second side 2322, and the second side 2322 conflicts with the contact heating tube 21. By inserting both the contact heating tube 21 and the airflow heating tube 222 into the connecting tube 230, the contact heating tube 21 and the airflow heating are separated by the heat-insulating protrusion 232, which facilitates assembly and improves assembly efficiency. In some other embodiments, in addition to the above-mentioned assembly method, one end of the connecting tube 230 can also be inserted into the contact heating tube 21, or one end can be inserted into the airflow heating tube 222.

[0050] Further, in one embodiment, please refer to Figures 4 to 6 The heat insulating protrusion 232 is a heat insulating protrusion ring. In this way, the heat insulating effect of the heat insulating connector 23 is better. In some other embodiments, the heat insulating protrusion 232 can also be a plurality of protrusions arranged at intervals along the circumference of the connecting pipe 230.

[0051] In one embodiment, to further simplify the installation method, please refer to Figures 4 to 6 , the contact heating tube 21 and the connecting tube 230 are interference fit, and the airflow heating tube 222 and the connecting tube 230 are interference fit. In this way, no additional connector is required for assistance, the installation is more convenient, and the reliability is higher. In some other embodiments, any one of the contact heating tube 21 and the connecting tube 230 and the airflow heating tube 222 and the connecting tube 230 can be interference fit. In some other embodiments, in addition to interference fit, any feasible method such as welding, crimping, bonding or threaded connection can be used between the contact heating tube 21 and the connecting tube 230 and between the airflow heating tube 222 and the connecting tube 230.

[0052] In one embodiment, the connecting pipe 230 is made of a material that is a poor thermal conductor, such as PEEK material, ceramic, PI material, or PPSU material.

[0053] In one embodiment, please refer to Figures 4 to 6 The airflow heating element 22 includes a flow guide 224, which is mounted on the heat exchange body 223 and is used to contact the end surface of the aerosol generating rod 3. The flow guide 224 can prevent the heat exchange body 223 from directly contacting the aerosol generating rod 3.

[0054] Specifically, the flow guide 224 is against the heat exchange body 223 and part of the flow guide 224 is inserted into the heat exchange body 223. The flow guide 224 has one or more vents 2241. The vents 2241 connect the heat exchange channel 221 with the tube hole of the contact heating tube 21. If the heat exchanger 223 directly contacts the aerosol generating rod, the generated aerosol is likely to have an oily odor. The flow guide 224 can prevent the aerosol generating rod from contacting the heat exchange body 223, and at the same time can change the direction and speed of the airflow.

[0055] Further, regarding the installation method of the contact heating tube 21, in one embodiment, please refer to Figures 4 to 6 The aerosol generating rod heating structure 2 includes a base 24 and a heating tube support 25. One end of the contact heating tube 21 is arranged on the heating tube support 25, and the other end is connected to the heat insulation connector 23. The airflow heating element 22 is connected between the base 24 and the heat insulation connector 23. Further, the heating tube support 25 includes a protective cover 251. At least a part of the base 24 is sealed and inserted into the protective cover 251. An annular heat insulation space is formed between the protective cover 251 and the contact heating tube 21. The annular heat insulation space can play a role in heat insulation and heat preservation.

[0056] Specifically, in one embodiment, please refer to Figures 4 to 6 The contact heating tube 21, the airflow heating tube 222 and the connecting tube 230 are connected end to end to form a tube assembly, and the tube assembly is clamped between the heating tube bracket 25 and the base 24. The heating tube bracket 25 has a bracket hole for inserting the aerosol generating rod 3. The bracket hole is connected to the tube hole of the contact heating tube 21.

[0057] In one embodiment, the heat exchange body 223 and the airflow heating tube 222 can be fixedly installed together, and the connection method includes bonding, interference fit, welding or fastener fixation. In one embodiment, please refer to Figure 4 The bottom of the heat exchange body 223 has a flange 2231, and the airflow heating pipe 222 and the base 24 clamp the flange 2231 to achieve the installation of the heat exchange body 223. The airflow heating pipe 222 is inserted into the base 24, and there is a sealing ring 26 between the airflow heating pipe 222 and the base 24 for sealing.

[0058] In one embodiment, the aerosol generating rod heating structure 2 includes a power supply circuit (not shown in the figure), and the contact heating tube 21 and the airflow heating element 22 are both connected to the power supply circuit, and the power supply circuit can supply power to any one of the contact heating tube 21 and the airflow heating element 22 separately, so that the contact heating tube 21 and the airflow heating element 22 can generate heat independently. Specifically, in one embodiment, the power supply circuit includes a conduction circuit and a control circuit. In one embodiment, the aerosol generating device includes a circuit board 5, and the control circuit is integrated on the circuit board 5.

[0059] The airflow heating element 22 and the contact heating tube 21 are both connected to the power source 4 through the conduction circuit, and the control circuit controls the on-off of the circuit between the airflow heating element 22 and the power source 4, and also controls the on-off of the circuit between the contact heating tube 21 and the power source 4. In one embodiment, the control circuit can be controlled according to the operation of the operation key, or according to the signal sent by the sensing device of the aerosol generating device. The sensing device can be a microphone that senses the suction frequency of the aerosol generating rod 3, a sensor that senses the posture of the aerosol generating device, etc.

[0060] The aerosol generating device of the present application can avoid direct contact and heat transfer between the contact heating tube 21 and the airflow heating element 22 through the insulation effect of the insulation connecting member 23, thereby facilitating the control of the temperature difference between the contact heating tube 21 and the airflow heating element 22, so that the temperature difference can be controlled within a larger range, which has a great effect on improving the taste, thereby improving the user experience.

[0061] In one embodiment, when the aerosol generating device of the present application is used, an aerosol generating rod is inserted, and the aerosol generating rod is heated by a contact heating element and an airflow heating element. The contact heating element can keep warm. After working for a period of time, the contact heating element is turned off, and the airflow heating element is always working. When the user inhales the aerosol generating rod, the airflow heated by the airflow heating element enters the aerosol generating rod, and the aerosol generating matrix in the aerosol generating rod is heated to generate an aerosol. In some other embodiments, the airflow heating element and the contact heating element can adopt any feasible control strategy as needed.

[0062] In an embodiment of an aerosol generating rod heating structure, the aerosol generating rod heating structure may be the aerosol generating rod heating structure in any one of the above embodiments, and details thereof will not be repeated.

[0063] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. An aerosol generating rod heating structure, characterized in that: It includes a contact heating pipe, an airflow heating element and a heat-insulating connecting element; The contact heating tube is for inserting the aerosol generating rod, and the inner wall of the contact heating tube is used for thermally contacting with the outer wall of the aerosol generating rod to heat the aerosol generating rod; The airflow heating element has a heat exchange channel, and the heat exchange channel is used to heat the airflow passing therethrough; the heat exchange channel is communicated with the tube hole of the contact heating tube, so that the airflow heated by the heat exchange channel can enter the aerosol generating rod; The heat-insulating connector connects the contact heating tube and the airflow heating element, and is used to block heat conduction between the contact heating tube and the airflow heating element.

2. The aerosol generating rod heating structure according to claim 1, characterized in that: The airflow heating element comprises an airflow heating tube and a heat exchanger. The heat exchanger is arranged in the airflow heating tube and in heat-conducting contact with the airflow heating tube. The heat exchange channel is arranged on the heat exchanger.

3. The aerosol generating rod heating structure according to claim 2, characterized in that: The heat-insulating connecting piece is a connecting tube, the contact heating tube is plugged into one end of the connecting tube, and the airflow heating tube is plugged into the other end of the connecting tube.

4. The aerosol generating rod heating structure according to claim 3, characterized in that: The connecting pipe comprises a pipe body and a heat-insulating protruding portion in the pipe body. One side of the heat-insulating protruding portion in the axial direction of the connecting pipe abuts against the airflow heating pipe, and the other side abuts against the contact heating pipe.

5. The aerosol generating rod heating structure according to claim 4, characterized in that: The heat-insulating protruding portion is a heat-insulating protruding ring.

6. The aerosol generating rod heating structure according to any one of claims 3 to 5, characterized in that: The contact heating tube and the connecting tube are interference fit and / or the airflow heating tube and the connecting tube are interference fit.

7. The aerosol generating rod heating structure according to any one of claims 2 to 5, characterized in that: The airflow heating element comprises a flow guider, which is mounted on the heat exchange body and is used to abut against the end surface of the aerosol generating rod.

8. The aerosol generating rod heating structure according to any one of claims 1 to 5, characterized in that: The aerosol generating rod heating structure comprises a base and a heating tube bracket, one end of the contact heating tube is arranged on the heating tube bracket, and the other end is connected to the thermal insulation connector, and the airflow heating element is connected between the base and the thermal insulation connector.

9. The aerosol generating rod heating structure according to any one of claims 1 to 5, characterized in that: The aerosol generating rod heating structure includes a power supply circuit, and the contact heating tube and the airflow heating element are both connected to the power supply circuit. The power supply circuit can supply power to any one of the contact heating tube and the airflow heating element separately, so that the contact heating tube and the airflow heating element can generate heat independently.

10. An aerosol generating device, characterized in that: It comprises a device shell and an aerosol generating rod heating structure as claimed in any one of claims 1 to 9, wherein the aerosol generating rod heating structure is located in the device shell.

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