Heating device and aerosol generating equipment
By using heating elements with different heating rates in the heating device to create high-temperature and low-temperature zones, the problem of excessive aerosol generation in the initial stage of heating and insufficient generation in the middle and later stages is solved, achieving continuity and consistency in aerosol generation and improving the user experience.
Patent Information
- Application Number
- CN202420814317.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-18
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-18
AI Technical Summary
Existing circumferential heating devices have the problem of excessive aerosol generation in the initial stage and insufficient generation in the middle and later stages when heating aerosol-generated products, which affects the user experience.
Multiple heating elements with different heating rates are arranged circumferentially along the base to form a high-temperature zone and a low-temperature zone. Aerosols are generated in the early and middle-to-late stages of heating due to the difference in heating rate of the heating elements.
It improves the continuity and consistency of aerosol generation, avoids the problem of excessive generation in the early stage of heating and insufficient generation in the middle and later stages, and improves the user experience.
Smart Images
Figure CN222340564U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aerosols, in particular to a heating device and an aerosol generating device. Background Art
[0002] An aerosol generating device is an electronic product that generates aerosols by heating an aerosol matrix. As the core component of an aerosol generating device, the heating device is mainly used to heat the aerosol matrix to a temperature that can generate aerosols but is not high enough for combustion. At present, most heating devices that use circumferential heating heat the entire 360° area of the aerosol generating product. Since the high-temperature heating area is too large, the amount of aerosol generated in the early stage is too much, while the amount of aerosol generated in the middle and late stages is obviously insufficient, which seriously affects the user experience of the aerosol generating device. Utility Model Content
[0003] The utility model aims to provide a heating device and an aerosol generating device using the heating device, so as to improve the continuity and consistency of the generated aerosol.
[0004] According to the first aspect, an embodiment provides a heating device, comprising a base member and a heating component; wherein a receiving cavity extending along the axial direction of the base member is formed inside the base member, and the receiving cavity is used to receive an aerosol generating product; the heating component comprises a plurality of heating elements with different heating rates, and the plurality of heating elements are arranged on the cavity wall of the receiving cavity at circumferential intervals along the base member, and are used to heat the aerosol generating product.
[0005] In one embodiment, the number of the heat generating components is set to be multiple groups, and the multiple groups of heat generating components are arranged at intervals along the axial direction of the base member.
[0006] In one embodiment, the plurality of heating elements of each group of the heating components at least include a first heating element and a second heating element; wherein:
[0007] The first heating elements of the plurality of groups of heating components are arranged side by side and spaced apart along the axial direction of the base component, and the first heating elements of the plurality of groups of heating components have the same heating rate and different heating areas;
[0008] The second heating elements of the plurality of groups of heating components are arranged side by side and spaced apart along the axial direction of the base component, and the second heating elements of the plurality of groups of heating components have the same heating rate and different heating areas.
[0009] In one embodiment, the two opposite ends of the base member in the axial direction are respectively an air inlet end and an air outlet end, and the heating rate of the first heating element is greater than the heating rate of the second heating element; wherein:
[0010] The heating area of the first heating element of the plurality of heating components decreases from the air outlet end toward the air inlet end, and the heating area of the second heating element of the plurality of heating components increases from the air outlet end toward the air inlet end.
[0011] In one embodiment, the two opposite ends of the base member in the axial direction are respectively an air inlet end and an air outlet end, and the plurality of heating elements include a first heating element and a second heating element having a preset length in the axial direction of the base member; wherein:
[0012] The heating area of one of the first heating element and the second heating element gradually decreases from one end close to the air outlet end to one end close to the air inlet end, and the heating area of the other one gradually increases from one end close to the air outlet end to one end close to the air inlet end.
[0013] In one embodiment, the heating rate of the first heating element is greater than the heating rate of the second heating element, the heating area of the first heating element gradually decreases from one end close to the air outlet end to one end close to the air inlet end, and the heating area of the second heating element gradually increases from one end close to the air outlet end to one end close to the air inlet end.
[0014] In one embodiment, the base member has a heat-insulating wall enclosing the receiving cavity, and the inner wall surface of the heat-insulating wall is provided with a plurality of receiving grooves corresponding to the heating elements one by one, and the heating elements are received and fixed in the corresponding receiving grooves.
[0015] In one embodiment, it also includes an electromagnetic coil; the electromagnetic coil is arranged around the base member at the periphery of the base member, and the heating element is a heating element made of electromagnetic material; the electromagnetic coil is used to generate an alternating magnetic field so that the heating element is heated by the alternating magnetic field.
[0016] In one embodiment, it also includes a shell member, wherein a first chamber and a second chamber that are not connected to each other are formed inside the shell member, the first chamber is arranged around the second chamber at the periphery of the second chamber, the electromagnetic coil is arranged in the first chamber, and the base member is arranged in the second chamber.
[0017] According to a second aspect, an embodiment provides an aerosol generating device, comprising a body component, a power supply component and the heating device according to the first aspect; wherein:
[0018] An air inlet passage and an air outlet passage are formed inside the fuselage assembly, and the heating device is arranged in communication between the air inlet passage and the air outlet passage;
[0019] The power supply component is arranged on the body component and is electrically connected to the heating device. The power supply component is used to supply power to the heating device to cause the heating element to generate heat.
[0020] According to the above-mentioned embodiment, the heating device includes a base member and a heating component. The base member is provided with a receiving cavity extending along its axial direction, and the receiving cavity is used to receive the aerosol generating product. The heating component includes a plurality of heating elements with different heating rates, and the plurality of heating elements are arranged side by side and spaced on the cavity wall of the receiving cavity along the circumference of the base member, and the heating elements are used to contact and heat the aerosol generating product. By arranging the heating elements along the circumference of the base member, the difference in heating rates between the heating elements can be utilized. In the initial stage of heating, the area surrounding the aerosol generating product at 360° is divided into a high-temperature zone with a faster heating rate and a low-temperature zone with a slower heating rate, so that aerosol is generated in advance on the side of the aerosol generating product close to the high-temperature zone, and aerosol is generated on the side of the aerosol generating product close to the low-temperature zone in the middle and late stages of heating, thereby effectively improving the continuity and consistency of aerosol generation during circumferential heating, and avoiding the problem of large aerosol generation in the early stage of heating and insufficient aerosol generation in the middle and late stages of heating. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the cross-sectional structure of a heating device according to an embodiment.
[0022] Figure 2 Schematic diagram of the structural layout of a heating element in a heating device according to an embodiment (I).
[0023] Figure 3 This is a schematic diagram of the structural layout of the heating element in a heating device of an embodiment (II).
[0024] Figure 4 The figure is a schematic diagram of the cross-sectional structure of an aerosol generating device according to an embodiment of the present invention in an application state.
[0025] In the figure:
[0026] 10. Base member; 10a. Accommodating cavity; 20. First heating member; 30. Second heating member; 40. Electromagnetic coil; 50. Shell member; 50a. First chamber; 50b. Second chamber; 60. Body assembly; 70. Power supply assembly; A. Aerosol generating product. DETAILED DESCRIPTION
[0027] The present application 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.
[0028] 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.
[0029] The serial numbers assigned to the components herein, 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).
[0030] See also Figures 1 to 3 Combined with Figure 4 The embodiment of the present application provides a heating device that can be installed in an aerosol generating device to generate a usable aerosol by circumferentially heating the aerosol generating product A contained therein; the heating device includes a base member 10, a heating component, and other functional components that exist as needed, which are described in detail below.
[0031] See also Figures 1 to 3 The base member 10 is generally a tubular structure of a heat-insulating material, such as zirconium oxide ceramics, aluminum oxide ceramics, etc. For the convenience of distinction and description, the two opposite ends of the base member 10 in its axial direction are respectively defined as the air inlet end and the air outlet end of the base member 10, and the tubular space of the base member 10 is defined as a receiving cavity 10a, that is, the receiving cavity 10a is equivalent to the inner wall of the base member 10 extending along the axial direction of the base member 10; the side wall of the base member 10 that encloses the receiving cavity 10a is defined as a heat-insulating wall, that is, the inner circumference of the heat-insulating wall is equivalent to the cavity wall of the receiving cavity 10a. With the help of the receiving cavity 10a, at least a part of the aerosol generating product A can be received and placed inside the base member 10.
[0032] It should be noted that those skilled in the art should be aware that the common aerosol generating product A may simply be an aerosol generating matrix with a stable or fixed contour shape (e.g., columnar), or it may be a structure (e.g., columnar) formed by packaging the aerosol generating matrix with packaging materials (e.g., paper materials for cigarettes, polyamide ester materials, etc.).
[0033] For example, please combine Figure 4 A typical aerosol generating product A can be divided into a matrix section, a cooling section and a filtering section along its length direction; wherein the matrix section is formed by packaging and shaping aerosol generating matrix such as medicinal materials, spices, tobacco, etc. The matrix section is inserted and accommodated in the heating chamber 10a, and the aerosol generating matrix in the matrix section can be heated by the heating device to generate a usable aerosol.
[0034] In other embodiments, the base member 10 may also adopt other suitable structural forms or materials with relatively low thermal conductivity, such as a cylindrical structure with a preset length, wherein the open end of the cylinder is the air outlet end of the base member 10, so that the aerosol generating product A (such as the matrix segment) can be inserted and accommodated in the interior of the base member 10; at the same time, an air vent is provided at the closed end of the cylinder so that the air flow can enter the aerosol generating matrix, thereby carrying the generated aerosol and discharging it from the open end of the cylinder; all these will not be elaborated here.
[0035] See also Figures 1 to 3 The heating component is mainly used to directly contact the aerosol generating product A from the outer peripheral side of the aerosol generating product A, so that the aerosol generating matrix in the aerosol generating product A can be heated when the heating component generates heat, thereby prompting the aerosol generating matrix to release or generate aerosol; the heating component includes a plurality of heating elements with different heating rates, and the plurality of heating elements are arranged at intervals along the circumference of the base member 10 on the cavity wall of the receiving cavity 10a (i.e., the inner circumferential surface of the insulating surrounding wall); for example, two, three or other greater numbers of heating elements are evenly and spacedly arranged along the circumference of the base member 10.
[0036] The following mainly takes the example that the heating component includes two heating elements with different heating rates to explain the structural structure and heating principle of the heating device.
[0037] For the convenience of distinction and description, the two heating elements in the heating component are defined as a first heating element 20 and a second heating element 30, respectively. The first heating element 20 and the second heating element 30 are evenly spaced along the circumference of the base member 10 (it can also be understood as being symmetrically arranged about the axis of the base member 10); wherein the heating rate of the first heating element 20 is greater than the heating rate of the second heating element 30; for example, the first heating element 20 and the second heating element 30 can be heating elements made of electrothermal materials with different heating rates, and both are caused to heat up by powering on, and the first heating element 20 can be heated to a preset temperature before the second heating element 30; for another example, the first heating element 20 and the second heating element 30 can be heating elements made of electromagnetic materials with different magnetic permeabilities, and both are caused to heat up by providing an alternating magnetic field, and the first heating element 20 is heated to a preset temperature before the second heating element 30 because its magnetic permeability is better than that of the second heating element 30.
[0038] By arranging heating elements with different heating rates in the accommodating cavity 10a along the circumferential direction, the entire annular area surrounding the aerosol generating product A at 360° can be divided into multiple heating zones. In the initial stage of heating, the difference in heating rates of the heating elements is used to form multiple temperature fields with gradient changes, namely: a high-temperature heating zone with a faster heating rate (for example, the zone where the first heating element 20 is located) and a low-temperature heating zone with a slower heating rate (for example, the zone where the second heating element 30 is located); in this way, the aerosol released or generated in the initial stage of heating mainly comes from the aerosol generating matrix on the side of the aerosol generating product A close to the high-temperature heating zone (that is, the first heating element 20), and the aerosol matrix released or generated in the middle and late stages of heating mainly comes from the aerosol generating matrix on the side of the aerosol generating product A close to the low-temperature heating zone (that is, the second heating element 30).
[0039] On the one hand, by performing zoned heating on the aerosol generating product A along its circumference, it can be ensured that the heated portion of the aerosol generating product A in its axial direction has a certain continuity, which can effectively improve the continuity and consistency of aerosol generation, and avoid the problem of large aerosol generation in the initial stage of heating and insufficient aerosol generation in the middle and late stages of heating, thereby creating conditions for improving the user experience of the heating device or aerosol generating equipment.
[0040] On the other hand, by using the base member 10 of the heat-insulating material as the mounting carrier of the heating element, the heat conduction between different heating zones can be reduced or minimized, which is beneficial to maintaining the regional division of high-temperature zones and low-temperature zones and the stability of the temperature field in the initial stage of heating; and by utilizing the structural relationship that the heating element can directly contact the aerosol generating product A, direct contact heating of the aerosol generating product A can be achieved, and the distribution of the temperature field can be avoided from being affected by heat conduction between the components in the initial stage of heating.
[0041] In one embodiment, see Figure 1 and Figure 2 The number of heating components is set to multiple groups, such as two groups, three groups or other larger numbers; the multiple groups of heating components are arranged at intervals in the axial direction of the base member 10, and different heating components may include the same or different numbers of heating elements, and the heating elements in different heating components may have the same or different heating rates and the same or different heating areas.
[0042] Exemplarily, the number of heating components is set to three groups, each group of heating components includes a first heating element 20 and a second heating element 30; for the convenience of distinction and description, the three first heating elements 20 are respectively marked as heating element a1, heating element a2 and heating element a3, and the three second heating elements 30 are respectively marked as heating element b1, heating element b2 and heating element b3.
[0043] The heating element a1, the heating element a2 and the heating element a3 have the same heating rate, and are arranged in sequence along the axial direction of the base member 10 from the air outlet end toward the air inlet end of the base member 10 at intervals, and the heating areas of the heating element a1, the heating element a2 and the heating element a3 are arranged in decreasing order (that is, the heating area of the heating element a1 is larger than the heating area of the heating element a2, and the heating area of the heating element a2 is larger than the heating area of the heating element a3).
[0044] The heating element b1, the heating element b2 and the heating element b3 have the same heating rate, and are arranged in sequence along the axial direction of the base member 10 from the air outlet end toward the air inlet end of the base member 10. The heating areas of the heating element b1, the heating element b2 and the heating element b3 are arranged in increasing order (that is, the heating area of the heating element b1 is smaller than the heating area of the heating element b2, and the heating area of the heating element b2 is smaller than the heating area of the heating element b3).
[0045] It should be noted that Figure 1 and Figure 2 The heat generating element shown in the figure only indicates the approximate arrangement position of the heat generating element inside the base member 10 , and does not indicate the structural form and related parameters (such as the heat generating area) of the heat generating element.
[0046] On the one hand, with the help of multiple groups of heating elements in the heating components, it is equivalent to forming multiple heating zones in a mesh form inside the base member 10 or the accommodating cavity 10a. By selecting and configuring parameters such as the heating rate and heating area of each heating zone, it is possible to form a circumferential heating effect on the aerosol generating product A and ensure the continuity and consistency of aerosol generation.
[0047] On the other hand, the heating element a1 with a fast heating rate and the largest heating area and the heating element b2 with a slow heating rate and the smallest heating area are arranged in cooperation with each other near the air outlet end of the base element 10, which is beneficial to the rapid generation and output of the aerosol matrix in the initial stage of heating. The heating element a3 with a fast heating rate and the smallest heating area and the heating element b3 with a slow heating rate and the largest heating area are arranged in cooperation with each other near the air inlet end of the base element 10, which is beneficial to the continuous generation of aerosol in the middle and late stages of heating or when the heating temperatures of all heating elements tend to stabilize at the preset temperature; thereby ensuring that the aerosol generating product A can be continuously and fully heated.
[0048] In other embodiments, according to actual needs, the heating elements in each heating assembly may also be arranged in other regular or irregular ways, which will not be elaborated here.
[0049] In one embodiment, see Figure 3 The first heating element 20 and the second heating element 30 adopt a structural form with a preset length in the axial direction of the base member 10. For example, the first heating element 20 and the second heating element 30 are extended from the air outlet end of the base member 10 to the air inlet end of the base member 10; wherein, the heating area of the first heating element 20 gradually decreases from the end close to the air outlet end of the base member 10 toward the end close to the air inlet end of the base member 10, and the heating area of the second heating element 30 gradually increases from the end close to the air outlet end of the base member 10 toward the end close to the air inlet end of the base member 10.
[0050] Therefore, by utilizing the structural characteristics that the heating rate of the first heating element 20 is greater than the heating rate of the second heating element 30, and the heating areas of the two are gradually changed in the opposite direction, rapid generation and output of aerosol can be achieved in the initial stage of heating, and the continuity of aerosol generation in the middle and late stages of heating can be ensured.
[0051] In other embodiments, according to actual needs, the gradient forms of the heating area of the first heating element 20 and the heating area of the second heating element 30 can also be swapped, that is, the maximum heating area of the first heating element 20 is close to the air inlet end of the base member 10, and the maximum heating area of the second heating element 30 is close to the air outlet end of the base member 10; of course, in terms of the number of heating components configured, it can be one group or multiple groups.
[0052] In one embodiment, see Figure 1 A plurality of receiving grooves (not shown in the figure) corresponding to the heating elements are provided on the heat-insulating surrounding wall (ie, the cavity wall of the receiving cavity 10a), and the heating elements are received and fixed in the receiving grooves in a form close to being filled.
[0053] By means of the receiving groove, the heating element is firmly fixed to the base element 10, so that the side of the heating element that contacts the aerosol generating product A can be flush or approximately flush with the cavity wall of the receiving cavity 10a. While ensuring that the heating element can be in close contact with the aerosol generating product A, it can also prevent the heating element from causing structural interference to the aerosol generating product A during the process of inserting the aerosol generating product A into the receiving cavity 10a, thereby ensuring that the aerosol generating product A can be smoothly removed and inserted.
[0054] In one embodiment, see Figure 1 The heating device further includes an electromagnetic coil 40. Accordingly, the heating element (specifically, the first heating element 20 and the second heating element 30) is a heating element made of electromagnetic material, such as ferromagnetic material or alloy material containing elements such as iron, nickel, cobalt, titanium, etc., or inorganic non-metallic materials with ferromagnetic properties such as ceramics and carbon fibers that have been magnetized. The electromagnetic coil 40 is arranged around the base member 10 at the periphery or outside of the base member 10, and is mainly used to provide an alternating magnetic field environment for the heating element so that the heating element can generate heat due to eddy currents.
[0055] As for multiple heating elements in the same group of heating components, for example, the first heating element 20 and the second heating element 30 can be made of electromagnetic materials with different magnetic permeabilities; illustratively, the first heating element 20 can be made of carbon structural steel (such as No. 35 steel in the national standard, SPCE steel in the Japanese standard series, etc.), and the second heating element 30 can be made of stainless steel with magnetic conductivity (such as 430 stainless steel, 316 stainless steel, etc. in the national standard).
[0056] Therefore, by using the same electromagnetic coil 40 to provide an alternating magnetic field environment for multiple heating elements, based on the difference in magnetic permeability of the heating elements, some heating elements (such as the first heating element 20) can be caused to heat up to a preset temperature before other heating elements (such as the second heating element 30), thereby forming corresponding high-temperature heating zones and low-temperature heating zones at the initial stage of heating, thereby improving the continuity and consistency of aerosol generation.
[0057] In one embodiment, see Figure 1 The heating device also includes a shell member 50, which can be a hollow shell structure composed of a plurality of components. A first chamber 50a and a second chamber 50b that are not connected to each other are formed inside the shell member 50; wherein the first chamber 50a is an annular cavity structure surrounding the second chamber 50b and arranged at the periphery of the second chamber 50b, the electromagnetic coil 40 is arranged in the first chamber 50a, and the base member 10 (together with the heating component) is arranged in the second chamber 50b, thereby constructing a structural form in which the electromagnetic coil 40 is arranged around the base member 10 or the periphery of the heating component to ensure the integrity of the overall structural framework of the heating device.
[0058] For example, the shell member 50 is provided with ports for connecting the second chamber 50b with the outside of the shell member 50 at two opposite ends of the base member 10 in the axial direction, and the gas outlet and gas inlet of the base member 10 are connected to the ports of the shell member 50, respectively, so that a channel structure penetrating the shell member 50 is constructed inside the heating device, and the aerosol generating product A can be inserted into the receiving cavity 10a from the gas outlet of the base member 10 by means of the channel structure, and the external airflow can enter the receiving cavity 10a or the aerosol generating product A from the gas inlet of the base member 10 by means of the channel structure. At the same time, the heating device can be assembled in the aerosol generating device as a relatively independent functional component by means of the shell member 50, for example, it can be connected between the gas inlet channel and the gas outlet channel of the aerosol generating device.
[0059] See also Figure 4 Combined with Figures 1 to 3 The embodiment of the present application also provides an aerosol generating device, including a body component 60, a power supply component 70 and the heating device of the aforementioned embodiment.
[0060] Exemplarily, the body component 60 can be constructed by combining a body shell, internal pipes, etc., and the user can hold, move, operate and use the aerosol generating device with the help of the body component 60; an air inlet channel and an air outlet channel are formed inside the body component 60, and a heating device is connected and arranged between the air inlet channel and the air outlet channel. For example, the outer shell component 50 of the heating device is fixed to the inside of the body component 60, and the air inlet end of the base component 10 arranged in the second chamber 50b of the outer shell component 50 is sealed and connected to the air inlet channel, and the air outlet end is sealed and connected to the air outlet channel.
[0061] Exemplarily, the power supply component 70 is disposed on the body component 60, which can be understood as a collection of related components such as a power supply, a control circuit board, an airflow sensor, a push button switch, etc. The power supply component 70 is electrically connected to a heating device (such as an electromagnetic coil 40 or a heating element of an electric heating material) so that power can be supplied to the heating device through the power supply component 70, causing the heating element to generate heat or adjust the heating mode, etc.
[0062] It should be noted that the structure, function and connection or coordination relationship of the power supply assembly 70 with the heating device can be selected and set with reference to the prior art and according to the heating method of the heating device or the material used for the heating element, and will not be elaborated here.
[0063] Based on the structural and functional characteristics of the heating device, the aerosol generating device has multiple temperature fields with gradient changes at the initial stage of heating. By heating the aerosol generating product A, aerosol can be continuously generated and output, ensuring the continuity and consistency of aerosol generation, thereby effectively improving the user experience.
[0064] 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. A heating device, characterized in that: The heating device includes a base member and a heating component; wherein, a receiving cavity is formed inside the base member and is arranged along the axial direction of the base member, and the receiving cavity is used to receive the aerosol generating product; the heating component includes a plurality of heating elements with different heating rates, and the plurality of heating elements are arranged on the cavity wall of the receiving cavity at intervals along the circumference of the base member, and are used to heat the aerosol generating product.
2. The heating device according to claim 1, characterized in that The number of the heat generating components is set to be multiple groups, and the multiple groups of heat generating components are arranged at intervals along the axial direction of the base member.
3. The heating device according to claim 2, characterized in that The plurality of heating elements of each group of the heating components at least include a first heating element and a second heating element; wherein: The first heating elements of the plurality of groups of heating components are arranged side by side and spaced apart along the axial direction of the base component, and the first heating elements of the plurality of groups of heating components have the same heating rate and different heating areas; The second heating elements of the plurality of groups of heating components are arranged side by side and spaced apart along the axial direction of the base component, and the second heating elements of the plurality of groups of heating components have the same heating rate and different heating areas.
4. The heating device according to claim 3, characterized in that The two opposite ends of the base member in the axial direction are respectively an air inlet end and an air outlet end, and the heating rate of the first heating element is greater than the heating rate of the second heating element; wherein: The heating area of the first heating element of the plurality of heating components decreases from the air outlet end toward the air inlet end, and the heating area of the second heating element of the plurality of heating components increases from the air outlet end toward the air inlet end.
5. The heating device according to claim 1, characterized in that The two opposite ends of the base member in the axial direction are respectively an air inlet end and an air outlet end, and the plurality of heating elements include a first heating element and a second heating element having a preset length in the axial direction of the base member; wherein: The heating area of one of the first heating element and the second heating element gradually decreases from one end close to the air outlet end to one end close to the air inlet end, and the heating area of the other one gradually increases from one end close to the air outlet end to one end close to the air inlet end.
6. The heating device according to claim 5, characterized in that The heating rate of the first heating element is greater than that of the second heating element. The heating area of the first heating element gradually decreases from one end close to the air outlet end to one end close to the air inlet end, and the heating area of the second heating element gradually increases from one end close to the air outlet end to one end close to the air inlet end.
7. The heating device according to claim 1, characterized in that The base member has a heat-insulating wall enclosing the receiving cavity, and the inner wall surface of the heat-insulating wall is provided with a plurality of receiving grooves corresponding to the heating elements one by one, and the heating elements are received and fixed in the corresponding receiving grooves.
8. The heating device according to any one of claims 1 to 7, characterized in that: It also includes an electromagnetic coil; the electromagnetic coil is arranged around the base member at the periphery of the base member, and the heating element is a heating element made of electromagnetic material; the electromagnetic coil is used to generate an alternating magnetic field so that the heating element is heated by the alternating magnetic field.
9. The heating device according to claim 8, characterized in that It also includes a shell component, wherein a first chamber and a second chamber that are not connected to each other are formed inside the shell component, the first chamber surrounds the second chamber and is arranged at the periphery of the second chamber, the electromagnetic coil is arranged in the first chamber, and the base component is arranged in the second chamber.
10. An aerosol generating device, characterized in that: It comprises a body assembly, a power supply assembly and a heating device as claimed in any one of claims 1 to 9; wherein: An air inlet passage and an air outlet passage are formed inside the fuselage assembly, and the heating device is arranged in communication between the air inlet passage and the air outlet passage; The power supply component is arranged on the body component and is electrically connected to the heating device. The power supply component is used to supply power to the heating device to cause the heating element to generate heat.