Heating module and aerosol generator of aerosol generator

Abstract

This application relates to the field of aerosol generation technology, specifically to a heating module and an aerosol generating device. The heating module includes: a first heating element, configured as a cylindrical structure, including side walls and a bottom wall, the side walls and bottom wall defining a cavity for accommodating an aerosol matrix; and a second heating element, at least partially located within the cavity. One of the first and second heating elements includes a preheating element for preheating the aerosol matrix in the cavity; the other includes an atomizing element for heating the preheated aerosol matrix to generate aerosols. By coordinating the first and second heating elements, preheating is achieved before heating the aerosol matrix, thereby increasing the overall temperature of the aerosol matrix and reducing its viscosity. This prevents the effective components in the aerosol matrix from being overheated and decomposed during the subsequent heating process via the atomizing element, thus adapting to the heating requirements of aerosol matrices with higher viscosity.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, specifically to a heating module and an aerosol generation device. Background Technology

[0002] Aerosol generators typically use liquid aerosol matrix. The accompanying heating module includes a liquid-conducting core and a heating element. The liquid-conducting core supplies the absorbed aerosol matrix to the heating element, which then heats it to generate aerosols. In related technologies, the liquid aerosol matrix can be replaced with a concentrated liquid or paste to reduce the amount of aerosol matrix used. However, concentrated liquids or pastes have higher viscosity, which can easily lead to dry burning or even scorching when heated using the aforementioned heating module, affecting the user experience.

[0003] In response, some aerosol generators include a heating cylinder for containing and heating the aerosol matrix. During heating, the inner wall of the heating cylinder in contact with the aerosol matrix has a high temperature, which causes a large temperature gradient in the aerosol matrix. This can easily lead to excessive thermal decomposition of the active ingredients (such as fragrances or active pharmaceutical ingredients) in the aerosol matrix near the inner wall, affecting the user experience. Utility Model Content

[0004] In order to meet the heating requirements of high-viscosity aerosol matrices, this application provides a heating module for an aerosol generating device and an aerosol generating device.

[0005] According to a first aspect, one embodiment provides a heating module for an aerosol generating device, comprising:

[0006] The first heating element is configured as a cylindrical structure, including side walls and a bottom wall, the side walls and the bottom wall defining a receiving cavity for containing the aerosol matrix;

[0007] The second heating element is at least partially located within the receiving cavity;

[0008] One of the first heating element and the second heating element includes a preheating heating element for preheating the aerosol matrix in the receiving cavity; the other includes an atomizing heating element for heating the preheated aerosol matrix to generate an aerosol.

[0009] In one embodiment, the atomizing heating element is disposed on the side of the bottom wall and / or the side wall away from the receiving cavity.

[0010] In one embodiment, at least a portion of the atomizing heating element is disposed on the side of the bottom wall away from the receiving cavity, and the bottom wall has liquid guiding holes for supplying the preheated aerosol matrix in the receiving cavity to the atomizing heating element.

[0011] In one embodiment, at least the bottom wall is made of porous ceramic material, of the bottom wall and the side wall.

[0012] In one embodiment, the atomizing heating element includes a heating mesh fixedly disposed on the end face of the bottom wall. The atomizing heating element has an annular structure arranged circumferentially around the receiving cavity. The atomizing heating element includes a meandering and bent portion, which has a first end that is radially close to the receiving cavity along the atomizing heating element and a second end that is away from the receiving cavity.

[0013] In one embodiment, the second heating element further includes a heat-conducting substrate, and the preheating heating element is disposed within the heat-conducting substrate.

[0014] In one embodiment, the preheating heating element includes a heating wire embedded in the heat-conducting substrate, and the second heating body further includes an electrical connection portion electrically connected to the heating wire and having an exposed portion that passes through the first heating body and is exposed to the outside of the first heating body.

[0015] In one embodiment, the thermally conductive substrate is integrally connected to the bottom wall, and the outer surface of the thermally conductive substrate and the side wall are spaced apart.

[0016] In one embodiment, the thermally conductive substrate is made of dense ceramic.

[0017] In one embodiment, the thermally conductive substrate is configured as a columnar or sheet-like structure and is disposed at the center of the receiving cavity.

[0018] In one embodiment, the preheating heating element includes a heating wire embedded in the thermally conductive substrate;

[0019] The heat-conducting substrate is a columnar structure, and the heating wire includes a spiral portion spirally arranged around the axis of the heat-conducting substrate; or, the heat-conducting substrate is a sheet-like structure, and the heating wire includes a serpentine portion that meanders along the length / width direction of the heat-conducting substrate.

[0020] In one embodiment, the second heating element includes the preheating heating element, the operating temperature of the second heating element is 80℃-120℃, and the operating temperature of the atomizing heating element is 180℃-200℃.

[0021] According to a second aspect, one embodiment provides an aerosol generating apparatus, comprising:

[0022] The heating module described in any of the above embodiments;

[0023] And a power supply module, electrically connected to the heating module, for supplying power to the heating module.

[0024] The heating module of the aerosol generating device according to the above embodiment integrates a first heating element and a second heating element, each including a preheating heating element and an atomizing heating element. When heating the aerosol matrix, the preheating heating element can preheat the aerosol matrix to increase the overall temperature of the aerosol matrix and reduce its viscosity. This facilitates heat exchange during the subsequent heating of the aerosol matrix by the atomizing heating element, thereby reducing the temperature gradient inside the aerosol matrix. This makes the effective components in the aerosol matrix less prone to decomposition due to overheating, thus meeting the heating requirements of aerosol matrices with higher viscosity. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the heating module in the related technology;

[0026] Figure 2 A three-dimensional structural schematic diagram (I) of a heating module according to one embodiment;

[0027] Figure 3 A three-dimensional structural schematic diagram (II) of a heating module according to one embodiment;

[0028] Figure 4 This is a cross-sectional structural diagram of a heating module according to one embodiment;

[0029] Figure 5 A three-dimensional structural schematic diagram of the heating module according to another embodiment;

[0030] Figure 6 This is a schematic diagram of the internal structure of a heating module according to one embodiment.

[0031] In the diagram, 100 represents the heating cylinder.

[0032] 200, First heating element; 210, Side wall; 220, Bottom wall; 230, Receiving cavity;

[0033] 300. Second heating element; 310. Thermally conductive substrate;

[0034] 400. Preheating element; 410. Electrical connection; 420. Serpentine section; 430. Spiral section;

[0035] 500, Atomizing heating element; 510, Bent section; 511, First end; 512, Second end; 520, Lead wire. Detailed Implementation

[0036] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0037] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0038] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0039] The heating module commonly used in aerosol generators includes a liquid-conducting core and a heating element, which is suitable for absorbing and heating ordinary liquid aerosol matrices. However, it is not suitable for aerosol matrix concentrates or aerosol matrix pastes with high viscosity, as they are prone to dry burning or even scorching, which affects the user experience.

[0040] In response, the relevant technologies employ, for example... Figure 1 The heating cylinder 100 shown serves as a heating module, with the aerosol matrix stored within its cavity. During use, the heat from the heating cylinder 100 is transferred to the aerosol matrix via its inner wall. The portion of the aerosol matrix near the inner wall of the heating cylinder 100 has a higher temperature, while the portion further away from the inner wall has a lower temperature, resulting in a temperature gradient exceeding 30℃ / mm. This can easily cause excessive thermal decomposition of the active ingredients in the aerosol matrix near the inner wall, affecting the user experience.

[0041] In this embodiment, the heating module integrates a first heating element 200 and a second heating element 300, each comprising a preheating heating element 400 and an atomizing heating element 500, respectively. This allows the aerosol matrix to be preheated using the heat generated by the preheating heating element 400. Preheating increases the overall temperature of the aerosol matrix and reduces its viscosity, facilitating more efficient heat exchange during subsequent heating by the atomizing heating element 500. This effectively reduces the temperature gradient within the aerosol matrix, preventing the effective components in the aerosol matrix from decomposing due to localized overheating, thus meeting the heating requirements of high-viscosity aerosol matrices.

[0042] An embodiment of the heating module of the aerosol generator in this application:

[0043] In one embodiment, please refer to Figures 2 to 6 The heating module of the aerosol generator includes a first heating element 200 and a second heating element 300. The first heating element 200 is configured as a cylindrical structure including a sidewall 210 and a bottom wall 220, which define a receiving cavity 230 for receiving the aerosol matrix. At least a portion of the second heating element 300 is located in the receiving cavity 230.

[0044] Please refer to Figures 2 to 4 One of the first heating element 200 and the second heating element 300 includes a preheating heating element 400 for preheating the aerosol matrix in the receiving cavity 230; the other includes an atomizing heating element 500 for heating the preheated aerosol matrix to generate aerosol.

[0045] By cooperating with the first heating element 200 and the second heating element 300, the heating module can include a preheating stage and an atomization stage for heating the aerosol matrix. In the preheating stage, the preheating heating element 400 operates to raise the overall temperature of the aerosol matrix to near its atomization temperature; the viscosity of the aerosol matrix decreases as the temperature increases. In the atomization stage, the atomizing heating element 500 operates, or the atomizing heating element 500 and the preheating heating element 400 operate together, to heat the aerosol matrix to its atomization temperature. Because preheating has been performed, the temperature gradient within the aerosol matrix can be controlled within a small range, preventing the effective components in the aerosol matrix from decomposing due to localized overheating, thus helping to meet the heating requirements of higher viscosity aerosol matrices.

[0046] In one embodiment, please refer to Figure 3 and Figure 4The first heating element 200 includes an atomizing heating element 500, and the second heating element 300 includes a preheating heating element 400, so that the second heating element 300 is used to preheat the aerosol matrix. In another embodiment (not shown), the first heating element may include a preheating heating element 400, and the second heating element may include an atomizing heating element 500, so that the first heating element preheats the aerosol matrix from the periphery, and the second heating element heats the aerosol matrix to the atomization temperature, and the generated aerosol can be discharged from the cavity opening of the receiving cavity 230. In short, regardless of how the atomizing heating element 500 and the preheating heating element 400 are arranged, a staged heating mode of preheating and then heating the aerosol matrix can be formed.

[0047] In one embodiment, please refer to Figure 3 The atomizing heating element 500 can be disposed on the side of the bottom wall 220 of the first heating body 200 away from the receiving cavity 230, which helps to homogenize the heat generated by the atomizing heating element 500 when passing through the first heating body 200, thereby uniformly heating the aerosol matrix and further reducing the risk of local overheating and carbonization thermal degradation of the aerosol matrix.

[0048] In other embodiments not shown, the atomizing heating element 500 may also be disposed on the side of the sidewall 210 of the first heating body 200 away from the receiving cavity 230, or the atomizing heating element 500 may be disposed on both the sidewall 210 and the bottom wall 220 of the first heating body 200 away from the receiving cavity 230.

[0049] It is understandable that if the atomizing heating element 500 is a structure with a large continuous heating surface, such as a sheet or plate, then the atomizing heating element 500 can also be set on the side of the bottom wall 220 and / or side wall 210 of the first heating body 200 near the receiving cavity 230. By limiting the maximum operating temperature of the atomizing heating element 500, the overall overheating of the atomizing heating element 500 can be avoided.

[0050] In summary, the specific location of the atomizing heating element 500 on the bottom wall 220 and / or side wall 210 is not limited. It can be set on the surface or inside, as long as the generated heat can be transferred to the corresponding bottom wall 220 and side wall 210.

[0051] In one embodiment, at least a portion of the atomizing heating element 500 is disposed on the side of the bottom wall 220 away from the receiving cavity 230. The bottom wall 220 has liquid guiding holes (not shown in the figure) for supplying the preheated aerosol matrix in the receiving cavity 230 to the atomizing heating element 500. By providing liquid guiding holes, the preheated aerosol matrix can flow towards the bottom wall 220 to the atomizing heating element 500, where it is heated and atomized. This helps to increase the aerosol generation rate and reduces the likelihood of aerosol residue deposition, thus helping to extend its service life.

[0052] It is understandable that the liquid guiding orifice needs not only to allow the preheated aerosol matrix to flow to the atomizing heating element 500, but also to restrict the discharge of the unelectrified aerosol matrix to prevent leakage. Therefore, the orifice diameter can be configured according to the aerosol matrix. For example, the orifice can be a capillary, where the capillary force is sufficient to retain the unelectrified, high-viscosity aerosol matrix. However, after the viscosity of the aerosol matrix is ​​significantly reduced by preheating, it is allowed to flow to the atomizing heating element 500 under the influence of gravity, negative pressure suction, or capillary force. The capillary liquid-locking effect of the orifice, combined with the reduction in viscosity of the aerosol matrix after preheating, ensures that only aerosol matrix with sufficiently low viscosity can flow to the atomizing heating element 500. The unelectrified, viscous aerosol matrix is ​​effectively retained, helping to prevent dry burning and scorching.

[0053] In some embodiments, the bottom wall 220 may be made of porous ceramic material, utilizing the micropores in the porous ceramic material as heat-conducting holes. The side wall 210 may be made of porous ceramic material or other heat-conducting material; that is, of the bottom wall 220 and the side wall 210, at least the bottom wall 220 is made of porous ceramic material. If the side wall 210 is also made of porous ceramic material, then the side wall 210 and the bottom wall 220 may be integrally die-cast.

[0054] Since the aerosol matrix flows towards the bottom wall 220 and is supplied to the atomizing heating element 500, in a further embodiment, a tube can be provided on the side of the first heating element 200 away from the bottom wall 220. The inner cavity of the tube serves as an extension of the receiving cavity 230, increasing the volume of the aerosol matrix's receiving space. The tube can be made of a material with good thermal conductivity (such as aluminum, copper, or stainless steel) or a heat-insulating material (such as PEEK or ceramic fiber reinforced plastic). A heat-conducting material can aid preheating; a heat-insulating material can reduce heat loss. The connection between the tube and the first heating element 200 can be a threaded connection, a snap-fit ​​connection, or an interference fit.

[0055] In one embodiment, the atomizing heating element 500 may include a heating mesh fixedly disposed on the end face of the bottom wall 220. The atomizing heating element 500 has an annular structure arranged circumferentially around the receiving cavity 230. The atomizing heating element 500 includes a tortuous and bent portion 510, which has a first end 511 that is radially close to the receiving cavity 230 and a second end 512 that is away from the receiving cavity 230. The annular structure and the tortuous and bent portion 510 of the atomizing heating element 500 help to increase the contact area with the bottom wall 220, thereby increasing the heating area and heating efficiency.

[0056] For example, the atomizing heating element 500 is formed by bending a heating wire. The heating wire can be made of iron-chromium-aluminum alloy, and its structure can be a metal mesh, with a thickness of 0.08 mm. Lead wires 520 are connected to both ends of the heating wire to form a power supply circuit and an electrical connection to the power supply components of the aerosol generator. The atomizing heating element 500 may include several connected, meandering bends 510, each generally Z-shaped. The first end 511 and the second end 512 of each meandering bend 510 form two concentric circles around the central axis of the atomizing heating element 500, thus forming a... Figure 3 The serrated bending structure shown is illustrated.

[0057] Of course, in other embodiments not shown, the meandering bend 510 can also be configured as a triangular sawtooth structure, a sine wave structure, or other structures. Furthermore, the atomizing heating element 500 may also include a connecting portion between two adjacent meandering bends 510. In short, the specific structure of the atomizing heating element 500 is not limited, as long as it meets the design and usage requirements.

[0058] It is understandable that if the heating module only includes the first heating element 200 in the above embodiment, and omits the second heating element 300 (e.g., Figure 1 As shown, although it can also generate aerosols through heating, the initial heating stage requires the atomizing heating element 500 to continuously heat the bottom wall 220, which takes a relatively long time, usually 3-5 seconds. This can easily lead to dry burning, affecting the aerosol flavor. However, setting a second heating element can effectively avoid this problem.

[0059] In one embodiment, the second heating element 300 further includes a thermally conductive substrate 310, and the preheating heating element 400 is disposed within the thermally conductive substrate 310 to avoid direct contact between the preheating heating element 400 and the aerosol matrix, thereby helping to reduce the risk of thermal decomposition of the effective components in the aerosol matrix.

[0060] It is understood that the arrangement of the preheating heating element 400 is not limited. For example, in some embodiments, the preheating heating element 400 includes a heating wire embedded in a heat-conducting substrate 310, and the second heating element 300 further includes an electrical connection portion 410, which is electrically connected to the heating wire and has an exposed portion that passes through the first heating element 200 and is exposed to the outside of the first heating element 200. The electrical connection portion 410 may include two pins, which are respectively connected to both ends of the preheating heating element 400 for electrical connection with the power supply component of the aerosol generator. The heating wire may be made of iron-chromium-aluminum alloy, and its structure may be a metal braided mesh with a thickness of 0.08 mm.

[0061] In another embodiment, not shown, the preheating element 400 may also include an induction heating element, such as a block, powder sintered body, or metal mesh made of a ferromagnetic metal (e.g., iron, nickel, ferrite, or alloy thereof), embedded within the heat-conducting substrate 310. The heat-conducting substrate 310 must be a non-metallic material, such as ceramic, capable of penetrating an alternating magnetic field. The power supply component of the corresponding aerosol generator may include an induction coil disposed around the first heating element 200. When a high-frequency alternating current is applied to the induction coil, eddy currents are generated in the induction heating element, causing heating.

[0062] In one embodiment, please refer to Figure 2 , Figure 4 and Figure 5 The heat-conducting substrate 310 can be integrally connected to the bottom wall 220, and the outer surface of the heat-conducting substrate 310 and the side wall 210 are spaced apart so that the aerosol matrix fills the periphery of the heat-conducting substrate 310, which facilitates the absorption of heat from the second heating element 300 by the aerosol matrix, thereby achieving rapid preheating. Furthermore, the heat-conducting substrate 310 can be positioned at the center of the receiving cavity 230 to reduce the temperature gradient in the aerosol matrix during preheating, further improving preheating efficiency.

[0063] In one embodiment, please refer to Figure 4 If the heat-conducting substrate 310 is configured as a sheet structure, the heating wire may include a serpentine portion 420 that is bent and meandered along the length / width direction of the heat-conducting substrate 310, so as to transfer heat to all parts of the side surface of the heat-conducting substrate 310, so that the temperature of all parts of the side surface of the heat-conducting substrate 310 is similar, thereby improving the heating uniformity.

[0064] In one embodiment, please refer to Figure 5 and Figure 6 The heat-conducting substrate 310 is configured as a columnar structure, and the preheating heating element 400 includes a heating wire embedded in the heat-conducting substrate 310. The heating wire may include a spiral portion 430 spirally arranged around the axis of the heat-conducting substrate 310 so that the side surface of the heat-conducting substrate 310 is heated evenly.

[0065] In other embodiments, the thermally conductive substrate 310 may also be a cross-shaped, star-shaped, or cylindrical structure with ribs, to further increase the contact heat exchange area with the aerosol matrix.

[0066] In one embodiment, the thermally conductive substrate 310 can be made of dense ceramic to achieve rapid heat conduction while isolating the preheating heating element and the aerosol matrix. The thermally conductive substrate 310 can be integrated into a single unit by secondary die casting and the first heating element 200.

[0067] In summary, the specific shape, structure, location, and material of the thermally conductive substrate 310 are not limited, nor is the structure of the preheating element 400. The thermally conductive substrate 310 and the preheating element 400 can work together to preheat the aerosol matrix to the required temperature.

[0068] In one embodiment, the operating temperature of the second heating element 300 can be 80°C-120°C, for example, 90°C-110°C; the operating temperature of the atomizing heating element 500 can be 180°C-200°C, for example, 90°C-110°C. The operating temperature of the atomizing heating element 500 is sufficient to heat the aerosol matrix to its atomization temperature, while remaining below the significant thermal decomposition initiation temperature of the active ingredients in the aerosol matrix. The operating temperature of the second heating element 300 allows the aerosol matrix to heat up in stages, thereby reducing the risk of thermal decomposition.

[0069] Examples of the aerosol generating device in this application:

[0070] In one embodiment, the aerosol generating device includes: a heating module and a power supply module as described in any of the above embodiments, wherein the power supply module is electrically connected to the heating module and is used to supply power to the heating module.

[0071] The power supply component can be understood as a collection of related components such as circuit boards and battery cells. It is mainly used to support the realization of all or part of the functions of the aerosol generator, such as controlling the heating module to start and stop heating the aerosol matrix stored inside, adjusting the heating power of the preheating heating element 400 and the atomizing heating element 500, and displaying the status information of the aerosol generator.

[0072] In one embodiment, the power supply module can be configured to: upon startup, first supply power only to the preheating heating element 400 to preheat the aerosol matrix in the receiving cavity 230; after the preset preheating conditions are met (e.g., the preheating time reaches a preset time, or the average temperature of the aerosol matrix is ​​detected by a temperature sensor located in the receiving cavity 230 / on the thermally conductive substrate 310 to reach a preset temperature), then supply power to the atomizing heating element 500 (or supply power to both simultaneously) for atomization.

[0073] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A heating module for an aerosol generating device, characterized in that, include: The first heating element is configured as a cylindrical structure, including side walls and a bottom wall, the side walls and the bottom wall defining a receiving cavity for containing the aerosol matrix; The second heating element is at least partially located within the receiving cavity; One of the first heating element and the second heating element includes a preheating heating element for preheating the aerosol matrix in the receiving cavity; the other includes an atomizing heating element for heating the preheated aerosol matrix to generate an aerosol.

2. The heating module as described in claim 1, characterized in that, The atomizing heating element is disposed on the bottom wall and / or the side wall away from the receiving cavity.

3. The heating module as described in claim 2, characterized in that, At least a portion of the atomizing heating element is disposed on the side of the bottom wall away from the receiving cavity, and the bottom wall has liquid guiding holes for supplying the preheated aerosol matrix in the receiving cavity to the atomizing heating element.

4. The heating module as described in claim 3, characterized in that, Of the bottom wall and the side wall, at least the bottom wall is made of porous ceramic material.

5. The heating module as described in claim 3, characterized in that, The atomizing heating element includes a heating mesh fixedly disposed on the end face of the bottom wall. The atomizing heating element has an annular structure arranged circumferentially around the receiving cavity. The atomizing heating element includes a meandering and bent portion. The meandering and bent portion has a first end that is close to the receiving cavity along the radial direction of the atomizing heating element, and a second end that is away from the receiving cavity.

6. The heating module as described in any one of claims 1 to 5, characterized in that, The second heating element further includes a heat-conducting substrate, and the preheating heating element is disposed within the heat-conducting substrate.

7. The heating module as described in claim 6, characterized in that, The preheating element includes a heating wire embedded in the heat-conducting substrate. The second heating element also includes an electrical connection portion, which is electrically connected to the heating wire and has an exposed portion that passes through the first heating element and is exposed to the outside of the first heating element.

8. The heating module as described in claim 6, characterized in that, The thermally conductive substrate is integrally connected to the bottom wall, and the outer surface of the thermally conductive substrate and the side wall are spaced apart.

9. The heating module as described in claim 8, characterized in that, The thermally conductive substrate is made of dense ceramic.

10. The heating module as described in claim 8, characterized in that, The thermally conductive substrate is configured as a columnar or sheet-like structure and is located at the center of the receiving cavity.

11. The heating module as described in claim 10, characterized in that, The preheating heating element includes a heating wire embedded in the heat-conducting substrate; The heat-conducting substrate is a columnar structure, and the heating wire includes a spiral portion spirally arranged around the axis of the heat-conducting substrate; or, the heat-conducting substrate is a sheet-like structure, and the heating wire includes a serpentine portion that meanders along the length / width direction of the heat-conducting substrate.

12. The heating module as described in any one of claims 1 to 5, characterized in that, The second heating element includes the preheating heating element, the operating temperature of the second heating element is 80℃-120℃, and the operating temperature of the atomizing heating element is 180℃-200℃.

13. An aerosol generating apparatus, characterized in that, include: The heating module according to any one of claims 1 to 12; And a power supply module, electrically connected to the heating module, for supplying power to the heating module.

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