Heating assembly and aerosol-generating device

Abstract

The application provides a heating assembly and an aerosol generating device. The heating assembly is used for heating an aerosol generating article to generate an aerosol, and the heating assembly comprises a tubular base material and an antenna. The tubular base material comprises a plurality of single base materials, and the plurality of single base materials are connected in a circumferential direction to form the tubular base material, thereby defining a cavity for accommodating the aerosol generating article. The antenna comprises a plurality of antenna units, and the number of the antenna units is the same as the number of the single base materials. Each antenna unit is arranged on an inner wall of a corresponding single base material, and the antenna unit is used for emitting radio frequency energy to the cavity, thereby heating at least part of the aerosol generating article located in the cavity. The application uses the above technical solution to improve the energy utilization rate of the heating assembly and reduce the production difficulty.

Description

Technical Field

[0001] This application relates to the field of aerosol generation technology, and in particular to a heating component and an aerosol generating device. Background Technology

[0002] In existing aerosol generation devices, the antenna of the heating component is typically mounted on the outer wall of the substrate. The antenna can transmit radio frequency energy into the inner cavity of the substrate to heat the aerosol-generated product located within the cavity. However, the antenna also generates heat under the influence of radio frequency energy. Since the antenna is mounted on the outer wall of the substrate, this heat is transferred to the substrate through the substrate's heat transfer mechanism, resulting in heat loss and affecting the energy utilization rate of the heating component. Therefore, mounting the antenna on the inner wall of the substrate would be complex and difficult to manufacture. Utility Model Content

[0003] The purpose of this application is to provide a heating component and an aerosol generating device to improve the energy utilization rate of the heating component and reduce the production difficulty.

[0004] The first technical solution adopted in this application is: providing a heating assembly for heating an aerosol-generating article to generate an aerosol. The heating assembly includes a tubular substrate and an antenna. The tubular substrate includes multiple individual substrates connected circumferentially to form the tubular substrate, thereby defining a cavity for housing the aerosol-generating article. The antenna includes multiple antenna elements, the number of which is the same as the number of individual substrates. Each antenna element is disposed on the inner wall of a corresponding individual substrate, and the antenna elements are used to transmit radio frequency energy into the cavity, thereby heating at least a portion of the aerosol-generating article located in the cavity.

[0005] In some embodiments, the antenna element is constructed as a coated structure; or, the antenna element is laser-engraved onto the inner wall of the corresponding single substrate.

[0006] In some embodiments, the inner wall of the monolithic substrate is provided with a groove for embedding an antenna element, and the antenna element is at least partially embedded in the groove of the corresponding monolithic substrate.

[0007] In some embodiments, the number of multiple monomer substrates is two, both of which are semi-cylindrical, and the circumferential edges of the two monomer substrates are provided with radially protruding connecting portions. The two monomer substrates are connected through the connecting portions to form a tubular substrate.

[0008] In some embodiments, the heating assembly further includes a microwave source, and each antenna element has a connection terminal for connecting to the microwave source.

[0009] In some embodiments, the tubular substrate is prepared from materials including polyimide, polyetheretherketone, carbon fiber, or ceramic.

[0010] In some implementations, the antenna element is configured to have a meandering or folded extension shape, with the corners of the antenna element having an arc.

[0011] In some implementations, the antenna element is configured as an F-type or inverted F-type.

[0012] In some embodiments, the heating assembly further includes a shielding cover that is fitted over the outer periphery of the tubular substrate.

[0013] In some implementations, the distance between the antenna and the inner wall of the shield is 'a', where a ≥ 4 mm.

[0014] The second technical solution adopted in this application is: to provide an aerosol generating device, including a battery assembly and a heating assembly as described above, wherein the battery assembly is used to provide electrical energy to the heating assembly.

[0015] Unlike existing technologies, the heating component and aerosol generating device provided in this application have the following advantages: by dividing the tubular substrate into multiple individual substrates, it is easier to install the antenna unit on the inner wall of the corresponding individual substrate, thereby reducing the production difficulty; at the same time, it allows the antenna unit to be closer to the aerosol generated product, which can make full use of the heat generated by the antenna unit itself, thereby improving the energy utilization rate of the heating component. Attached Figure Description

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a heating assembly according to some embodiments of this application;

[0018] Figure 2 It is along Figure 1 A cross-sectional view along the AA direction;

[0019] Figure 3 This is a schematic diagram of the combination of a single substrate and an antenna element according to some embodiments of this application;

[0020] Figure 4 This is a schematic diagram of the combination of a heating component and an aerosol-generating article according to some embodiments of this application;

[0021] Figure 5 It is along Figure 4 A cross-sectional view along the CC direction;

[0022] Figure 6 yes Figure 4 An explosion diagram;

[0023] Figure 7 yes Figure 6 Cross-sectional view of the central insulation cover along the FF direction;

[0024] Figure 8 This is a schematic diagram of the structure of the clamping member according to some embodiments of this application.

[0025] Marker explanation:

[0026] Heating component 10, tubular substrate 1011, single substrate 1011a, cavity 1011b, connecting part 10111, antenna 1012, antenna element 10121, connecting end 10122, corner 10123, shielding cover 102, first opening 1023, shielding upper cover 1025, shielding lower cover 1026, heat insulation cover 103, first heat insulation chamber 103a, second heat insulation chamber 103b, bottom wall 1031, annular side wall 1032, arc-shaped protrusion 10311, clamping part 107, cylinder 1071, disc 1072, first protrusion 10711, second protrusion 10712, upper end cover 108, lower end cover 109, second opening 1081, aerosol generating product 300. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0031] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] As used herein, the term "aerosol generating article 300" refers to an article comprising an aerosol-forming matrix intended to be heated rather than burned to release volatile compounds that can form aerosols. Aerosols formed by heating the aerosol-forming matrix may contain fewer known hazardous components than aerosols generated by combustion or pyrolytic degradation of the aerosol-forming matrix. In one embodiment, the aerosol generating article 300 is removably connected to an aerosol generating apparatus.

[0034] The aerosol-forming matrix is ​​preferably a tobacco-containing material from which volatile compounds are released upon heating; alternatively, it can be a non-tobacco material suitable for electrically heated smoking. The aerosol-forming matrix is ​​preferably a solid matrix, which may include one or more of the following: vanilla leaves, tobacco leaves, homogenized tobacco, expanded tobacco, in powder, granules, fragments, strips, or flakes; or, the solid matrix may contain additional tobacco or non-tobacco volatile flavor compounds to be released upon heating. A suitable aerosol-forming matrix may be a cigarette internally filled with tobacco material.

[0035] In other embodiments, the term "aerosol generating article 300" refers to a container or box capable of containing an aerosol forming matrix, or other carrier capable of holding the aerosol forming matrix. The aerosol forming matrix contained in the aerosol generating article 300 may be a liquid component or a combination of liquid and solid components. Suitable aerosol forming matrices include, for example, polyols such as triethylene glycol, 1,3-butanediol, and glycerol; esters of polyols such as mono, di, or triacetic acid esters of glycerol; and fatty acid esters of mono, di, or polycarboxylic acids, such as dimethyl dodecanoate and dimethyl tetradecanoate. Preferred aerosol forming matrices are polyhydroxy alcohols or mixtures thereof, such as triethylene glycol, 1,3-butanediol, and most preferably glycerol. The aerosol forming matrix may include other additives and ingredients, such as fragrances. In some alternative examples, the aerosol generating article 300 also includes a liquid holding element for adsorbing and retaining the liquid matrix. Suitable liquid holding elements are made of flexible fibers such as cotton fibers, non-woven fabrics, sponges, etc. In other examples, the liquid holding element is made of porous materials such as microporous ceramics, microporous glass, or microporous metals.

[0036] As used herein, the term "aerosol generating apparatus" is an apparatus that is engaged with or interacts with aerosol generating article 300 to form an inhalable aerosol.

[0037] The aerosol generating apparatus includes a heating component 10, which is used to heat the aerosol forming matrix of the aerosol generating article 300 to generate aerosol.

[0038] Please see Figures 1-6 , Figure 1 This is a schematic diagram of the structure of a heating assembly according to some embodiments of this application. Figure 2 It is along Figure 1 Sectional view along the AA direction. Figure 3 This is a schematic diagram of the combination of a single substrate and an antenna element according to some embodiments of this application. Figure 4 This is a schematic diagram illustrating the combination of a heating component and an aerosol-generating article according to some embodiments of this application. Figure 5 It is along Figure 4 Cross-sectional view in the CC direction, Figure 6 yes Figure 4 The present application provides a heating assembly 10 for heating an aerosol generating article 300 to generate an aerosol. The heating assembly 10 includes a tubular substrate 1011 and an antenna 1012. The tubular substrate 1011 includes a plurality of individual substrates 1011a, which are connected circumferentially to form the tubular substrate 1011, thereby defining a cavity 1011b for housing the aerosol generating article 300. The antenna 1012 includes a plurality of antenna elements 10121, the number of which is the same as the number of individual substrates 1011a. Each antenna element 10121 is disposed on the inner wall of a corresponding individual substrate 1011a. The antenna element 10121 is used to transmit radio frequency energy into the cavity 1011b, thereby heating at least a portion of the aerosol generating article 300 located in the cavity 1011b.

[0039] In the technical solution of this application embodiment, by dividing the tubular substrate 1011 into multiple individual substrates 1011a, it is beneficial for the antenna unit 10121 to be installed on the inner wall of the corresponding individual substrate 1011a, thereby reducing the manufacturing difficulty; at the same time, it allows the antenna unit 10121 to be closer to the aerosol generation article 300, which can make full use of the heat generated by the antenna unit 10121 itself, thereby improving the energy utilization rate of the heating assembly 10. The heating assembly 10 includes a tubular substrate 1011 and an antenna 1012. The tubular substrate 1011 is formed by connecting multiple individual substrates 1011a circumferentially, and a cavity 1011b for accommodating the aerosol generation article 300 is formed inside it. Each individual substrate 1011a serves as a support structure for the corresponding antenna unit 10121. The antenna 1012 includes multiple antenna units 10121. The antenna units 10121 can emit radio frequency energy into the cavity 1011b, thereby heating at least a portion of the aerosol generation article 300 located in the cavity 1011b. Each antenna element 10121 is located on the inner wall of the corresponding single substrate 1011a, so that each single substrate 1011a has an antenna element 10121 on its inner wall. This is beneficial to improve the coverage of the aerosol generation product 300 by the antenna element 10121, improve the heating efficiency of the heating component 10, and make the aerosol generation product 300 fully atomized, thereby improving the aerosol generation efficiency.

[0040] In some implementations, please refer to Figure 2 The heating assembly 10 also includes a shield 102, which is fitted around the outer periphery of the tubular substrate 1011.

[0041] In the technical solution of this application embodiment, the shielding cover 102 is sleeved on the outer periphery of the tubular substrate 1011, serving as electromagnetic shielding to reduce interference from external electromagnetic fields to the antenna 1012. Furthermore, the shielding cover 102 can reflect and absorb internal electromagnetic waves, confining them within the shielding cover 102, reducing outward radiated energy, improving energy utilization, and lowering the risk of electromagnetic radiation. By placing the antenna element 10121 on the inner wall of the single substrate 1011a, the distance between the antenna element 10121 and the shielding cover 102 can be increased, thereby improving bandwidth and reducing the impact of dielectric changes on the heating stability of the heating assembly 10. Specifically, appropriately increasing the distance between the two can reduce the constraint of the shielding cover 102 on the electromagnetic field distribution of the antenna element 10121, allowing the antenna element 10121 to maintain good electromagnetic coupling performance over a wider frequency range, thus broadening the bandwidth. In addition, increasing the distance between the two can reduce the interference of changes in dielectric parameters (such as dielectric constant) on the electromagnetic field distribution and energy transmission of antenna 1012, reduce the fluctuation of heating power caused by dielectric property fluctuations, and thus improve the temperature stability of heating component 10 during operation.

[0042] In some embodiments, the antenna element 10121 is configured as a coated structure; or, the antenna element 10121 is disposed on the inner wall of the corresponding single substrate 1011a using a laser engraving process.

[0043] In the technical solutions of this application embodiment, the antenna element 10121 can have various construction methods. In some embodiments, the antenna element 10121 is constructed as a plated structure. This construction method can be achieved by applying a metal plating layer to the surface of the single substrate 1011a, for example, by using processes such as sputtering, evaporation, or electroplating to form a layer of metal material on the surface of the single substrate 1011a, thereby constituting the plated antenna element 10121. In other embodiments, the antenna element 10121 can be disposed on the inner wall of the corresponding single substrate 1011a using a laser engraving process. The specific steps are as follows:

[0044] First, the inner wall of the monomer substrate 1011a is etched. A high-energy laser beam is focused on the inner wall surface of the monomer substrate 1011a. The material is locally melted and vaporized through thermal or photochemical effects, thereby forming a precise groove on the surface. The depth and shape of the groove can be precisely controlled by adjusting parameters such as laser power and scanning speed to meet the requirements of subsequent processes.

[0045] After surface etching is completed, the etched area is roughened using laser energy or other auxiliary methods to create a rough texture on the groove surface, increasing the surface area. This step provides a stronger adhesion base for subsequent adhesive application and gold plating processes, improving the bonding strength between layers.

[0046] Next, a gluing process is performed, using a specific adhesive to evenly coat the roughened groove surface. The adhesive must have good adhesion and insulation properties to ensure that it will not affect the conductivity of the antenna element 10121 in subsequent processes. During the gluing process, the thickness and uniformity of the adhesive layer must be carefully controlled to avoid air bubbles or uneven thickness.

[0047] A gold plating process is then performed, forming a thin gold layer on the surface after the adhesive is applied. Gold has excellent conductivity and oxidation resistance, providing a good conductive path for the antenna element 10121.

[0048] To achieve the required thickness for the antenna element 10121, repeated application of adhesive and gold plating are necessary. After each application of adhesive and gold plating, the surface must be inspected and treated to ensure tight bonding between layers and a smooth surface. Through multiple cycles, the gold layer gradually accumulates, eventually forming an antenna element 10121 of a certain thickness on the inner wall of the substrate 1011a.

[0049] The antenna element 10121 is constructed as a coated structure, or the antenna element 10121 is laser-engraved onto the inner wall of the corresponding single substrate 1011a. On the one hand, the position of the antenna element 10121 remains fixed and is not affected by the assembly process of the antenna 1012 and the tubular substrate 1011, or by the insertion of the aerosol-generated product 300 into the tubular substrate 1011. Therefore, the heating consistency of the antenna 1012 can be guaranteed. On the other hand, the smooth inner wall of the tubular substrate 1011 is advantageous for the insertion of the aerosol-generated product 300 into the tubular substrate 1011.

[0050] In some embodiments, the inner wall of the monomer substrate 1011a is provided with a groove (not shown) for embedding the antenna unit 10121, and the antenna unit 10121 is at least partially embedded in the groove of the corresponding monomer substrate 1011a.

[0051] In the technical solution of this application embodiment, by providing a groove on the inner wall of the single substrate 1011a, the antenna unit 10121 can be at least partially embedded in the corresponding groove of the single substrate 1011a. The groove structure can limit the position of the antenna unit 10121, reducing the impact of positional changes of the antenna unit 10121 on the heating stability of the heating component 10 during heating. The groove structure can be formed by laser etching on the inner wall surface of the single substrate 1011a. There can be one or more grooves, and the specific number can be adjusted according to actual needs. The shape and depth of the groove can also be designed according to the specific size of the antenna unit 10121. This application embodiment does not specifically limit this.

[0052] In some implementations, please refer to Figure 6There are two individual substrates 1011a. Both individual substrates 1011a are semi-cylindrical. The circumferential edges of the two individual substrates 1011a are provided with radially protruding connecting portions 10111. The two individual substrates 1011a are connected by the connecting portions 10111 to form a tubular substrate 1011.

[0053] In the technical solution of this application embodiment, the tubular substrate 1011 is divided into two single substrates 1011a, so that an antenna unit 10121 of appropriate area can be provided on the inner wall of each single substrate 1011a, which is conducive to achieving a better heating effect. At the same time, it can reduce the risk of rapid heating due to the small area of ​​the antenna unit 10121 during full power output, thereby affecting the safety performance of the heating component 10.

[0054] The tubular substrate 1011 is composed of two semi-cylindrical single substrates 1011a, and the circumferential edges of the two single substrates 1011a are provided with radially protruding connecting portions 10111. The two single substrates 1011a are connected by the connecting portions 10111 to form the tubular substrate 1011, making the assembly of the tubular substrate 1011 more convenient and quick. The number of connecting portions 10111 can be 1, 2, 3, 4, etc., and this application embodiment does not specifically limit this.

[0055] In some implementations, please refer to Figure 3 The heating assembly 10 also includes a microwave source (not shown), and each antenna unit 10121 has a connection terminal 10122 for connecting to the microwave source.

[0056] In the technical solution of this application embodiment, a microwave source is used to transmit radio frequency signals to antenna unit 10121. Each antenna unit 10121 has a connection segment 1012b for connecting to the microwave source. Each antenna unit 10121 can receive radio frequency signals through its respective connection segment 1012b, so that each antenna unit 10121 can work independently and independently transmit radio frequency energy to cavity 1011b, thereby heating at least a portion of the aerosol generation article 300 located in cavity 1011b.

[0057] In some embodiments, the tubular substrate 1011 is prepared from materials including polyimide, polyetheretherketone, carbon fiber, or ceramic.

[0058] In the technical solution of this application embodiment, the tubular substrate 1011 is prepared using the above-mentioned materials, which can reduce the influence of the tubular substrate 1011 on microwaves. Polyimide and polyetheretherketone exhibit good microwave permeability due to their weak molecular polarity and low dielectric loss, resulting in small polarization effects and energy losses under microwave action. Carbon fiber, through its anisotropic conductivity (axial conduction, perpendicular insulation), can reduce microwave reflection and absorption, thereby reducing microwave loss. Ceramics, due to their high crystallinity and density, low dielectric loss, and conductivity close to insulation, effectively suppress microwave polarization loss and conduction loss. In addition, the above-mentioned materials have good high-temperature performance and are not easily deformed during the operation of the heating component 10, reducing the probability of the heating component 10's heating stability deteriorating due to deformation of the tubular substrate 1011.

[0059] Especially when the tubular substrate 1011 is made of materials such as polyimide, polyether ether ketone, and carbon fiber that are not suitable for secondary sintering, dividing the tubular substrate 1011 into multiple individual substrates 1011a makes it easier for the antenna unit 10121 to be installed on the inner wall of the corresponding individual substrate 1011a.

[0060] In some embodiments, antenna element 10121 is configured to have a meandering or folded extension shape, and the corner 10123 of antenna element 10121 has an arc.

[0061] In the technical solutions of this application embodiment, the shape of the antenna element 10121 can be varied. In some embodiments, the antenna element 10121 is constructed in a meandering or bent extension shape, which is beneficial to increase the length of the antenna element 10121 within the limited physical length of the single substrate 1011a, thereby increasing the radiation area of ​​the antenna element 10121 without increasing the size of the single substrate 1011a, and improving the coupling efficiency of electromagnetic energy. The corner 10123 of the antenna element 10121 has an arc, so that the corner 10123 of the antenna element 10121 forms a smooth transition structure, which is beneficial to reduce the concentration of charge at the corner 10123, reduce the current density at the corner 10123, and reduce problems such as local high temperature of the antenna element 10121, burnout of the antenna element 10121, or deformation of the single substrate 1011a caused by excessive current density, thereby improving the reliability and service life of the antenna element 10121.

[0062] In some embodiments, antenna element 10121 is configured as F-type or inverted F-type.

[0063] In the technical solutions of this application embodiment, the antenna element 10121 can have various patterns. In some embodiments, the antenna element 10121 is constructed as an F-shape or an inverted F-shape, which is typically composed of vertically and horizontally extending portions, resembling the letter "F". By constructing the antenna element 10121 as an F-shape or an inverted F-shape, it is beneficial to improve the coverage of the aerosol generating article 300 by the antenna element 10121, improve the heating efficiency of the heating component 10, and ensure that the aerosol generating article 300 is fully atomized, thereby improving the aerosol generating efficiency. Moreover, the F-shape or inverted F-shape pattern is simple and easy to manufacture.

[0064] In some implementations, please refer to Figure 4 and Figure 5 The distance between the antenna 1012 and the inner wall of the shield 102 is a, where a ≥ 4 mm.

[0065] In the technical solution of this application embodiment, the distance between the antenna 1012 and the inner wall of the shield 102 is within the above range, and the radio frequency energy can be effectively radiated onto the aerosol generating product 300, so that more radio frequency energy is absorbed by the aerosol generating product 300, thereby improving the radio frequency radiation efficiency of the heating component 10.

[0066] Please see Figure 5 The distance between the antenna 1012 and the inner wall of the shielding cover 102 refers to the distance between the antenna 1012 and the inner wall of the shielding cover 102 in the direction perpendicular to the axis of the aerosol generating product 300. The distance between the antenna 1012 and the inner wall of the shielding cover 102 can be 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.8mm, 5mm, 6mm, 8mm, 10mm, 15mm, etc., or it can be a range of any two of the above values, such as 4mm~4.8mm, 4.5mm~8mm, 6mm~15mm, etc.

[0067] In some implementations, please refer to Figure 2 and Figure 6 The shielding cover 102 includes a shielding upper cover 1025 and a shielding lower cover 1026. The shielding lower cover 1026 is a cylindrical structure with an opening at the top. The shielding upper cover 1025 covers the opening at the top of the shielding lower cover 1026. The shielding upper cover 1025 is provided with a first opening 1023 for inserting the aerosol generating article 300. A second chamber (not shown) is defined between the shielding lower cover 1026 and the tubular substrate 1011.

[0068] In the technical solution of this application embodiment, the shielding cover 102 is divided into a shielding upper cover 1025 and a shielding lower cover 1026. The tubular substrate 1011 and antenna 1012 located inside the shielding cover 102 can be first installed inside the shielding lower cover 1026. Then, by covering the upper cover 1025 with the upper opening of the lower cover 1026, the heating component 10 can be installed, making the installation of the heating component 10 more convenient and quick. The first opening 1023 is located in the shielding upper cover 1025, allowing at least a portion of the aerosol generating product 300 to pass through the first opening 1023 of the shielding upper cover 1025 and be inserted into the first chamber, thereby achieving heating of the aerosol generating product 300. A second chamber is defined between the shielding lower cover 1026 and the tubular substrate 1011, creating a certain distance between them, which is beneficial to improving the electromagnetic shielding performance of the shielding cover 102, thereby improving the heating stability of the heating component 10.

[0069] In some implementations, please refer to Figure 2 and Figure 6 The heating assembly 10 also includes a heat insulation cover 103, which is sleeved on the outer periphery of the tubular substrate 1011 and the antenna 1012 and located inside the shielding cover 102. The heat insulation cover 103 is used to divide the second chamber into a first heat insulation chamber 103a and a second heat insulation chamber 103b. The heat insulation cover 103 is a cylindrical structure with an opening at the top.

[0070] In the technical solution of this application embodiment, by adding a heat insulation cover 103, which is fitted around the tubular substrate 1011 and the antenna 1012 and located inside the shielding cover 1025, the heat of the heating area can be reduced to diffuse to the outside, the heating efficiency of the heating component 10 can be improved, and the aerosol generation product 300 can be fully atomized, thereby improving the aerosol generation efficiency.

[0071] The heat insulation cover 103 can divide the second chamber into a first heat insulation chamber 103a and a second heat insulation chamber 103b. One of the first heat insulation chamber 103a and the second heat insulation chamber 103b is located between the heat insulation cover 103 and the tubular substrate 1011, and the other is located between the heat insulation cover 103 and the shielding cover 1026. By forming a double-layer heat insulation chamber, the heating efficiency of the heating component 10 is further improved, and the aerosol generation efficiency is improved.

[0072] Optionally, air is filled into the first insulation chamber 103a and the second insulation chamber 103b. Air has a low thermal conductivity, which can reduce the rate at which heat from the heating area diffuses to the outside, further improving the heating efficiency of the heating component 10 and increasing the aerosol generation efficiency.

[0073] The heat insulation cover 103 is a cylindrical structure with an opening at the top, which allows the heat insulation cover 103 to be directly fitted onto the outer periphery of the tubular substrate 1011 and the antenna 1012, thereby making the assembly of the heat insulation cover 103, the tubular substrate 1011 and the antenna 1012 more convenient and quick.

[0074] In some implementations, please refer to Figure 7 , Figure 7 yes Figure 6 A cross-sectional view of the insulation cover along the FF direction. The insulation cover 103 includes a bottom wall 1031 and an annular side wall 1032 connected thereto. The bottom wall 1031 is provided with two arc-shaped protrusions 10311, which are used to receive and clamp the bottom end of the tubular substrate 1011.

[0075] In the technical solution of this application embodiment, the heat insulation cover 103 with the above-described structure forms a heat insulation chamber between the annular sidewall 1032 and the tubular substrate 1011, and also forms a heat insulation chamber between the annular sidewall 1032 and the shielding lower cover 1026, namely the first heat insulation chamber 103a and the second heat insulation chamber 103b. By forming a double-layer heat insulation chamber, the heating efficiency of the heating component 10 is further improved, and the aerosol generation efficiency is improved. The bottom wall 1031 is provided with an arc-shaped protrusion 10311 for receiving and clamping the bottom end of the tubular substrate 1011, which can fix the bottom of the tubular substrate 1011. Since the antenna 1012 is located on the inner wall of the tubular substrate 1011, a change in the position of the tubular substrate 1011 will cause the position of the antenna 1012 to shift, thereby affecting the heating stability of the heating component 10, and consequently causing uneven heating of the aerosol generation product 300, which cannot be fully atomized. Therefore, by providing an arc-shaped protrusion 10311 on the bottom wall 1031 of the heat insulation cover 103 for receiving and clamping the bottom end of the tubular substrate 1011, the phenomenon that the aerosol generating product 300 cannot be fully atomized due to uneven heating caused by changes in the position of the tubular substrate 1011 during use can be reduced.

[0076] The two arc-shaped protrusions 10311 can be connected to form a closed ring structure or a non-closed structure. They can be distributed symmetrically or asymmetrically. This application does not specifically limit this.

[0077] In some implementations, please refer to Figure 2 and Figure 6 The heating assembly 10 also includes a clamping member 107, which is located inside the shielding cover 102. The clamping member 107 abuts against the tubular substrate 1011 and is used to clamp the aerosol generating article 300.

[0078] In the technical solution of this application embodiment, by adding a clamping member 107, the tubular substrate 1011 and the aerosol generating product 300 can be fixed. The clamping member 107 abuts against the tubular substrate 1011 and is used to clamp the aerosol generating product 300, which can reduce the phenomenon that the aerosol generating product 300 cannot be fully atomized due to uneven heating caused by changes in the position of the tubular substrate 1011 or the aerosol generating product 300 during use.

[0079] In some implementation methods, please refer to the following: Figure 8 , Figure 8 This is a schematic diagram of the structure of a clamping member according to some embodiments of this application. The clamping member 107 includes a cylindrical body 1071 abutting the outer periphery of a tubular substrate 1011 and a disc 1072 located at one end of the cylindrical body 1071. A first protrusion 10711 is provided on the inner wall of the cylindrical body 1071 near the disc 1072. The first protrusion 10711 is used to abut against the aerosol generating product 300. The disc 1072 abuts against the shielding cover 102.

[0080] In the technical solution of this application embodiment, a clamping member 107 with the above-described structure is used. The cylindrical body 1071 of the clamping member 107 abuts against the outer periphery of the tubular substrate 1011, thereby fixing the tubular substrate 1011. A first protrusion 10711 is provided on the inner wall of the cylindrical body 1071 near the disc 1072. The first protrusion 10711 abuts against the aerosol generating product 300, thereby fixing the aerosol generating product 300. The disc 1072 abuts against the shielding cover 102, so that the clamping member 107 can be fixedly disposed inside the shielding cover 102, thereby realizing the fixing of the tubular substrate 1011 and the aerosol generating product 300 by the clamping member 107.

[0081] In some implementations, please refer to Figure 2 and Figure 8 The clamping member 107 also includes a second protrusion 10712, which extends from the outer wall of the cylinder 1071 toward the heat insulation cover 103 and is used to abut against the heat insulation cover 103.

[0082] In the technical solution of this application embodiment, by providing a second protrusion 10712, the second protrusion 10712 extends from the outer wall of the cylinder 1071 to the heat insulation cover 103 and abuts against the heat insulation cover 103, the heat insulation cover 103 can be fixed, so that the heat insulation cover 103 is fixedly sleeved on the outer periphery of the tubular substrate 1011 and the antenna 1012.

[0083] In some implementations, please refer to Figure 2 and Figure 6The heating assembly 10 also includes an upper end cover 108 and a lower end cover 109. The lower end cover 109 is a cylindrical structure with an opening at the top. The upper end cover 108 covers the upper opening of the lower end cover 109. The upper end cover 108 is provided with a second opening 1081.

[0084] In the technical solution of this application embodiment, the heating assembly 10 further includes an upper end cover 108 and a lower end cover 109. The upper end cover 108 and the lower end cover 109 are used to fix and protect the shielding cover 102. The lower end cover 109 is a cylindrical structure with an opening at the top. After the shielding cover 102 and the components inside the shielding cover 102 are assembled, the lower end cover 109 can be directly fitted onto the outer periphery of the lower shielding cover 1026, and then the upper end cover 108 is closed onto the upper opening of the lower end cover 109 to realize the installation of the heating assembly 10. Alternatively, the lower shielding cover 1026 is embedded inside the lower end cover 109. After the components located inside the lower shielding cover 1026 are installed, the upper shielding cover 1025 is closed onto the upper opening of the lower shielding cover 1026, and then the upper end cover 108 is closed onto the upper opening of the lower end cover 109 to realize the installation of the heating assembly 10. The upper end cover 108 and the lower end cover 109 make the installation of the heating assembly 10 more convenient and quick. The upper cover 108 is provided with a second opening 1081, so that at least part of the aerosol generating article 300 can be inserted into the first chamber through the second opening 1081 of the upper cover 108, thereby realizing the heating of the aerosol generating article 300.

[0085] This application also provides an aerosol generating apparatus, including a battery assembly (not shown) and a heating assembly 10 as described in any of the embodiments above, wherein the battery assembly is used to provide electrical energy to the heating assembly 10.

[0086] In the technical solution of this application embodiment, the aerosol generating device includes a battery assembly and a heating assembly 10. The battery assembly is used to provide electrical energy to the heating assembly 10. The heating assembly 10 includes a tubular substrate 1011 and an antenna 1012. The tubular substrate 1011 includes a plurality of individual substrates 1011a, which are connected circumferentially to form the tubular substrate 1011, thereby defining a cavity 1011b for housing the aerosol generating article 300. The antenna 1012 includes a plurality of antenna elements 10121, the number of which is the same as the number of individual substrates 1011a. Each antenna element 10121 is disposed on the inner wall of the corresponding individual substrate 1011a, and the antenna element 10121 is used to transmit radio frequency energy into the cavity 1011b, thereby heating at least a portion of the aerosol generating article 300 located in the cavity 1011b.

[0087] In the technical solution of this application embodiment, by dividing the tubular substrate 1011 into multiple individual substrates 1011a, it is beneficial for the antenna unit 10121 to be installed on the inner wall of the corresponding individual substrate 1011a, thereby reducing the production difficulty; at the same time, it makes the antenna unit 10121 closer to the aerosol generation product 300, which can make full use of the heat generated by the antenna unit 10121 itself, thereby improving the energy utilization rate of the heating component 10.

[0088] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A heating assembly for heating an aerosol-generating article to produce an aerosol, characterized in that, The heating component includes: A tubular substrate comprising a plurality of monomeric substrates connected circumferentially to form the tubular substrate, thereby defining a cavity for housing the aerosol-generated article; An antenna includes multiple antenna elements, the number of which is the same as the number of the single substrate. Each antenna element is disposed on the inner wall of the corresponding single substrate. The antenna element is used to transmit radio frequency energy into the cavity, thereby heating at least a portion of the aerosol-generated article located in the cavity.

2. The heating assembly as described in claim 1, characterized in that, The antenna element is constructed as a coated structure; Alternatively, the antenna element may be laser-engraved onto the inner wall of the corresponding single substrate.

3. The heating assembly as described in claim 1, characterized in that, The inner wall of the single substrate is provided with a groove for embedding the antenna unit, and the antenna unit is at least partially embedded in the corresponding groove of the single substrate.

4. The heating assembly as described in claim 1, characterized in that, The plurality of monomer substrates are two in number, both of which are semi-cylindrical in shape. The circumferential edges of the two monomer substrates are provided with radially protruding connecting portions, and the two monomer substrates are connected through the connecting portions to form the tubular substrate.

5. The heating assembly as described in claim 1, characterized in that, The heating assembly further includes a microwave source, and each of the antenna units has a connection terminal for connecting to the microwave source.

6. The heating assembly as claimed in claim 1, characterized in that, The tubular substrate is prepared from materials including polyimide, polyetheretherketone, carbon fiber, or ceramic.

7. The heating assembly as claimed in claim 1, characterized in that, The antenna element is configured to extend in a meandering or zigzag shape, with arcs at the corners.

8. The heating assembly as claimed in claim 1, characterized in that, The antenna element is configured as an F-type or an inverted F-type.

9. The heating assembly as described in any one of claims 1-8, characterized in that, The heating assembly also includes a shielding cover, which is fitted around the outer periphery of the tubular substrate.

10. The heating assembly as claimed in claim 9, characterized in that, The distance between the antenna and the inner wall of the shield is a, where a ≥ 4 mm.

11. An aerosol generating device, characterized in that, It includes a battery assembly and a heating assembly as described in any one of claims 1-10, wherein the battery assembly is used to provide electrical energy to the heating assembly.

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