Heating assembly, atomizer and aerosol generating device

Abstract

The application provides a heating assembly, an atomizer and an aerosol generating device. The heating assembly comprises a base and a radiation layer. The base is a hollow cavity with an open end, used to accommodate or remove the aerosol generating article in or from the cavity through the opening. The radiation layer is arranged at least corresponding to the sidewall of the base, used to radiate infrared rays when heated to heat the aerosol generating article in the cavity. The heating assembly effectively increases the types and contents of aroma-forming substances formed by atomization, improves the utilization rate and uniformity of heating of the aerosol generating article, and can ensure that the aerosol generating article is always in a relatively stable cracking temperature environment.

Description

Technical Field

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

[0002] Low-temperature baking aerosol generators are gaining increasing attention and popularity due to their advantages such as safety, convenience, health, and environmental friendliness.

[0003] Aerosol generating devices typically include a heating element and a power supply element. The heating element is used to contain the aerosol generating product, heating and atomizing it to form an inhalable aerosol. Currently, the ventilation method for the heating element is atmospheric pressure oxygen suction, that is, an airflow is introduced outside the heating element and continuously passes through the aerosol generating product to carry away the atomized aerosol.

[0004] However, when airflow passes over aerosol-generated products, the heating temperature of the aerosol-generated products drops sharply, resulting in poor stability of the decomposition reaction. Furthermore, the airflow provides ample oxygen, causing the reaction of aerosol-generated products to be mainly oxidation-based, leading to a lower variety and content of aroma-producing substances formed by atomization, and a less satisfying user experience. Summary of the Invention

[0005] The heating component, atomizer, and aerosol generating device provided in this application aim to solve the problems that when air flows over an aerosol generating product, the heating temperature of the aerosol generating product drops sharply, resulting in poor stability of the aerosol generating product during the pyrolysis reaction; and that the air flow provides sufficient oxygen, causing the aerosol generating product to mainly undergo oxidation reactions, resulting in a smaller content and fewer types of aerosols formed by atomization, and a less satisfactory user experience.

[0006] To solve the above-mentioned technical problems, one technical solution adopted in this application is to provide a heating assembly. The heating assembly includes a substrate and a radiating layer; wherein the substrate is a hollow cavity with one open end, used to contain or remove an aerosol-generated product from the cavity through the opening; the radiating layer is disposed at least corresponding to the sidewall of the substrate, used to radiate infrared rays when heated to heat the aerosol-generated product within the cavity.

[0007] The heating component further includes a resistance heating layer disposed on one side of the outer wall of the substrate, which is used to generate heat to heat the radiation layer when energized.

[0008] Wherein, the radiation layer is disposed on one side of the outer wall surface of the sidewall of the substrate, and the resistance heating layer is disposed on the side of the radiation layer opposite to the substrate; or,

[0009] The radiation layer is disposed on the inner wall surface of the sidewall of the substrate, and the resistance heating layer is disposed on the side of the substrate opposite to the radiation layer.

[0010] The substrate is a transparent substrate.

[0011] The radiation layer is located on the outer wall of the substrate and is used to generate heat when energized to heat the aerosol in the cavity to generate the product.

[0012] The substrate is an insulating substrate; the radiation layer is disposed on the outer wall surface of the sidewall of the substrate.

[0013] The substrate is a conductive metal substrate; the heating assembly further includes an insulating layer disposed between the radiating layer and the substrate.

[0014] The radiation layer is provided on the entire outer wall surface corresponding to the sidewall of the substrate.

[0015] It also includes an electrode layer electrically connected to the radiation layer to supply power to the radiation layer; wherein the electrode layer is disposed on the surface of the radiation layer opposite to the substrate; or,

[0016] The electrode layer and the radiation layer are disposed in the same layer.

[0017] The heating assembly further includes a conductive coil, which is arranged around the periphery of the radiation layer to generate a changing magnetic field when energized; the radiation layer is located on the outer wall surface of the sidewall of the substrate, and the radiation layer is heated by forming eddy currents in the changing magnetic field.

[0018] The heating assembly further includes a conductive coil, which is arranged around the periphery of the substrate to generate a changing magnetic field when energized; the radiation layer is located on the inner wall surface of the sidewall of the substrate, and the substrate generates eddy currents and heat in the changing magnetic field to heat the radiation layer.

[0019] The radiation layer is an infrared layer.

[0020] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide an atomizer. The atomizer includes: the heating component, housing, and aerosol generating article as described above; wherein the housing has a receiving cavity and at least one air inlet communicating with the receiving cavity and the outside air; the aerosol generating article is received within the receiving cavity; wherein a portion of the housing is detachably connected to the cavity of the heating component; the at least one air inlet is opened on the portion of the housing extending beyond the heating component.

[0021] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide an aerosol generating device. The aerosol generating device includes one of a heating component and an atomizer; wherein the heating component is the heating component described above; the atomizer is the atomizer described above; and a power supply component is electrically connected to the heating component or the atomizer for supplying power to the heating component or the atomizer.

[0022] The beneficial effects of the embodiments of this application, which differ from the prior art, are as follows: The heating component, atomizer, and aerosol generating device provided in the embodiments of this application, by using a hollow cavity with one open end for housing the aerosol generating product, can effectively reduce the amount of low-temperature fresh air flowing through the cavity to the aerosol generating product during the suction process. This allows the aerosol generating product to be in a negative pressure and low-oxygen state in the initial stage of heating. Under the low-oxygen negative pressure suction condition, the materials in the aerosol generating product mainly undergo hydrogenation, reduction, and pyrolysis reactions, effectively increasing the types and content of aroma-producing substances formed by atomization. This overcomes the problem of insufficient aroma-producing substances due to sufficient oxidation when fresh air flows through the aerosol generating product. At the same time, it can ensure that the aerosol generating product is always in a relatively stable pyrolysis temperature environment, overcoming the problem of unstable pyrolysis reactions caused by the rapid drop in temperature of the aerosol generating product due to the flow of fresh air through it. In addition, by setting a radiation layer on the side wall of the substrate to radiate infrared rays when heated, the aerosol-generated product in the cavity is heated, which effectively improves the utilization rate of the aerosol-generated product and the uniformity of heating. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a heating assembly provided in an embodiment of this application;

[0024] Figure 2 A cross-sectional view of the heating assembly provided in the first specific embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the overall structure of the substrate provided in an embodiment of this application;

[0026] Figure 4 A cross-sectional view of the heating assembly provided in the second specific embodiment of this application;

[0027] Figure 5 A cross-sectional view of the heating assembly provided in the third specific embodiment of this application;

[0028] Figure 6 A cross-sectional view of the heating assembly provided in the fourth specific embodiment of this application;

[0029] Figure 7A schematic plan view of the radiation layer, the resistance heating film layer, and the electrode layer provided in an embodiment of this application;

[0030] Figure 8 A cross-sectional view of the heating assembly provided in the fifth specific embodiment of this application;

[0031] Figure 9 A cross-sectional view of the heating assembly provided in the sixth specific embodiment of this application;

[0032] Figure 10 A cross-sectional view of the heating assembly provided in the seventh specific embodiment of this application;

[0033] Figure 11 This is a schematic diagram of the structure of an atomizer provided in one embodiment of this application;

[0034] Figure 12 A simplified structural diagram of an aerosol generating apparatus provided in an embodiment of this application;

[0035] Figure 13 A simplified structural diagram of an aerosol generating apparatus provided in another embodiment of this application.

[0036] Explanation of reference numerals in the attached figures

[0037] Heating component 10; substrate 1; opening 11; cavity 12; radiation layer 2; electrode layer 3; conductive coil 4; resistance heating layer 5; atomizer 20; housing 21; air inlet 211; air outlet channel 212; aerosol generating product 22; power supply component 30. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] Please see Figure 1 , Figure 1 This is a schematic diagram of the overall structure of a heating assembly provided in an embodiment of this application; Figure 2 This is a cross-sectional view of a heating assembly provided in the first specific embodiment of this application; in this embodiment, a heating assembly 10 is provided, which is used to heat and atomize aerosol to generate article 22 (see below) when energized. Figure 11 The heating component 10 is used to form an aerosol. This heating component 10 can be used in various fields, such as medical, cosmetic, and recreational smoking. The aerosol generating product 22 preferably uses a solid matrix, which may include plant leaves such as tobacco, vanilla leaves, tea leaves, and mint leaves, or one or more of the following: powders, granules, fragments, strips, or flakes; or, the solid matrix may contain additional volatile aroma compounds to be released when the matrix is ​​heated. Of course, the aerosol generating product 22 can also be a liquid or paste matrix, such as oils or liquid medicines with added aroma components. The following examples all use a solid matrix for the aerosol generating product 22.

[0043] like Figure 2 As shown, the heating assembly 10 includes a substrate 1, a radiation layer 2, and an electrode layer 3.

[0044] Among them, see Figure 3 , Figure 3 This is a schematic diagram of the overall structure of the substrate provided in one embodiment of this application; the substrate 1 is a hollow cavity 12 with an opening 11 at one end. For example, the substrate 1 can be a hollow cylinder, used to house or remove the aerosol-generating product 22 from the cavity 12 through the opening 11. The inner diameter of the cavity 12 can be adapted to the outer diameter of the aerosol-generating product 22 to be housed, so as to reduce the gap between the aerosol-generating product 22 and the sidewall of the cavity 12.

[0045] By using a hollow cavity 12 with one open end 11 as the substrate 1 for housing the aerosol generating product 22, compared to a hollow substrate with open ends, the amount of low-temperature fresh air flowing through the cavity 12 to the aerosol generating product 22 can be effectively reduced during the suction process. This allows the aerosol generating product 22 to be in a negative pressure and low-oxygen state during the initial heating stage. Under low-oxygen negative pressure suction conditions, the materials in the aerosol generating product 22 mainly undergo hydrogenation, reduction, and pyrolysis reactions, effectively increasing the types and content of aroma-producing substances formed by atomization. This overcomes the problem of insufficient aroma-producing substances due to sufficient oxidation when fresh air flows through the aerosol generating product 22. At the same time, it ensures that the aerosol generating product 22 remains in a relatively stable pyrolysis temperature environment, overcoming the problem of unstable pyrolysis reactions caused by a sharp drop in the temperature of the aerosol generating product 22 due to fresh air flowing through it.

[0046] like Figure 2 As shown, the radiation layer 2 is disposed on the side wall of the substrate 1 and is used to radiate infrared rays when heated to heat the aerosol-generated product 22 in the cavity 12; this effectively improves the utilization rate of the aerosol-generated product 22 and the uniformity of heating. Of course, in other embodiments, the radiation layer 2 may be further disposed on the bottom wall of the substrate 1 (i.e., the end wall of the end opposite to the opening 11) to improve the heating efficiency of the heating assembly 10.

[0047] In a specific embodiment, the radiating layer 2 can be an infrared layer. When heated, the infrared layer radiates infrared rays. Due to the strong thermal radiation capability of infrared rays, they can penetrate the interior of the aerosol-generating product 22, simultaneously heating both the inside and outside of the product. This reduces the temperature difference between the inside and outside of the aerosol-generating product 22. Compared to conventional resistance heating or electromagnetic heating methods, infrared heating provides better heating uniformity and avoids the problem of the aerosol-generating product 22 being scorched due to localized high temperatures. The radiating layer 2 can specifically be a far-infrared ceramic layer, a metal layer, or a conductive carbon layer, which can be selected according to specific needs.

[0048] In one specific embodiment, the radiating layer 2 is an infrared ceramic coating. When in operation, the radiating layer 2 radiates infrared rays to heat the aerosol-generated product 22. The infrared heating wavelength is 2.5µm to 20µm. Considering the characteristics of heating the aerosol-generated product 22, the infrared emissivity is typically above 0.8 when the heating temperature is between 200°C and 300°C. However, when the heating temperature reaches approximately 350°C, the energy radiation peak is mainly in the 3-5µm wavelength range.

[0049] In one embodiment, please continue to refer to Figure 2 The radiation layer 2 is specifically disposed on one side of the outer wall of the substrate 1. The infrared rays radiated by the radiation layer 2 pass through the substrate 1 and enter the cavity 12 to heat the aerosol-generated product 22 housed within the cavity 12. Specifically, the substrate 1 can be a transparent substrate; this allows more infrared rays radiated by the radiation layer 2 to pass through the substrate 1 to heat the aerosol-generated product 22 within the cavity 12, effectively improving the utilization rate of infrared rays and the heating efficiency of the aerosol-generated product 22.

[0050] In one specific embodiment, such as Figure 2 As shown, the electrode layer 3 is electrically connected to the radiation layer 2. When the electrode layer 3 is energized, current flows through the radiation layer 2, the temperature of the radiation layer 2 rises, and higher infrared radiation is excited. Since the transparent quartz substrate 1 can transmit infrared radiation with a wavelength of less than 4μm, the infrared energy excited by the radiation layer 2 passes through the substrate 1 to heat the aerosol generating product 22 in the cavity 12. At the same time, the substrate 1 is heated by the radiation layer 2, which excites far-infrared radiation to heat the aerosol generating product 22 inside it. Thus, the aerosol generating product 22 in the cavity 12 can be radiated and heated by heat conduction, which can improve the heating uniformity and utilization rate of the aerosol generating product 22.

[0051] Among them, such as Figure 2 As shown, the electrode layer 3 can be disposed on the surface of the radiation layer 2 facing away from the substrate 1, so as to be electrically connected to the radiation layer 2. Of course, when the radiation layer 2 does not cover the two ends of the substrate 1, as shown... Figure 4 As shown, Figure 4This is a cross-sectional view of the heating assembly provided in the second specific embodiment of this application; the electrode layer 3 can also be disposed at both ends of the substrate 1 and located on the outer wall surface of the side wall of the substrate 1, and disposed in the same layer as the radiation layer 2, thereby realizing electrical connection with the radiation layer 2; in this way, the space of the surface of the substrate 1 can be fully utilized to reduce the space occupied by the entire heating assembly 10.

[0052] Specifically, the electrode layer 3 can be made of a high thermal conductivity metal material sintered on the radiation layer 2 or the outer wall surface of the sidewall of the substrate 1.

[0053] In this embodiment, the substrate 1 can be made of an insulating substrate. Specifically, the substrate 1 can be made of a material that is heat-resistant and has high infrared transmittance, including but not limited to the following materials: quartz glass, yttrium aluminum garnet single crystal, germanium single crystal, magnesium fluoride ceramic, yttrium oxide ceramic, magnesium aluminum spinel ceramic, sapphire, silicon carbide, etc. Preferably, the substrate 1 is made of quartz glass.

[0054] The radiation layer 2 can be formed on the entire outer wall surface of the sidewall of the substrate 1 by methods such as screen printing, coating, sputtering, printing, or casting to ensure that the aerosol-generated products 22 located in the cavity 12 can be heated. The shape, area, and thickness of the radiation layer 2 can be set according to actual needs; for example, the shape, area, and thickness can be set according to the preset temperature field scheme of the heating component 10. For example, the shape of the radiation layer 2 can be a continuous film, a porous mesh, or strips, and it can be specifically made into a film-like surface heating element. It is understood that in order to make the heating effect of the radiation layer 2 more uniform, its thickness is usually consistent throughout the substrate 1; however, for some special requirements, the thickness of the radiation layer 2 can also be set differently throughout the substrate 1, so that the infrared energy density of different areas of the heating component 10 is different, that is, when the heating component 10 is powered on, the heat density of different areas is different, thus forming different temperature fields.

[0055] Specifically, the radiating layer 2 can be made of conductive or semiconductor materials that generate heat. For example, the material of the radiating layer 2 can be an ABO3 type perovskite material with metallic properties. Here, A is one or more of La, Sr, Ca, Mg, and Bi, and B is one or more of Al, Ni, Fe, Co, Mn, Mo, and Cr.

[0056] Of course, in other specific embodiments, the material of the substrate 1 can also be a conductive metal substrate, such as a stainless steel substrate or a metal aluminum substrate, etc. To prevent short circuits between the substrate 1 and the radiating layer 2, the heating assembly 10 also includes an insulating layer, which is disposed between the radiating layer 2 and the resistance heating layer 5. The insulating layer can be formed on the outer wall surface of the sidewall of the substrate 1 by means of screen printing, coating, sputtering, printing or casting. The material of the insulating layer can be a high-temperature resistant insulating material such as ceramic, quartz glass, mica, etc.

[0057] In another specific embodiment, see Figure 5 , Figure 5 A cross-sectional view of the heating assembly provided in the third specific embodiment of this application; and as described above. Figure 2 The heating assembly 10 provided in the corresponding embodiment differs in that it further includes a conductive coil 4, and the electrode layer 3 is specifically electrically connected to the conductive coil 4 to energize the conductive coil 4. The radiation layer 2 includes an infrared material and a ferromagnetic material doped in the infrared material. The infrared material can be one or more of perovskite, spinel, olivine, and carbides. The ferromagnetic material can be one or more of iron-based, cobalt-based, or nickel-based metals or alloys, and ferrites.

[0058] In this specific embodiment, a conductive coil 4 is arranged around the periphery of the radiating layer 2 to generate a changing magnetic field when energized. The ferromagnetic material of the radiating layer 2 is heated by eddy currents formed in the changing magnetic field.

[0059] Specifically, the conductive coil 4 can be made of a conductive metal, such as copper, aluminum, or silver. In this embodiment, the conductive coil 4 is preferably a copper metal coil. The conductive coil 4 can be enameled wire or Litz wire, wound around the side of the radiating layer 2 away from the substrate 1. It is understood that in this embodiment, the enamel coating on the wire is an insulating material to prevent short circuits between coils.

[0060] In yet another specific embodiment, see Figure 6 , Figure 6 A cross-sectional view of the heating assembly provided in the fourth specific embodiment of this application; and as described above. Figure 2 The heating assembly 10 provided in the corresponding embodiment differs in that it further includes a resistance heating layer 5, disposed on the surface of the radiation layer 2 facing away from the substrate 1. The electrode layer 3 is specifically electrically connected to the resistance heating layer 5. When the electrode layer 3 is energized, current flows through the resistance heating layer 5, causing it to generate heat, which in turn heats the radiation layer 2, thereby heating the radiation layer 2 and causing it to radiate infrared rays. Specifically, the electrode layer 3 can be disposed on the surface of the resistance heating layer 5 facing away from the radiation layer 2 or disposed in the same layer as the resistance heating layer 5. This embodiment does not limit the arrangement of the electrode layer 3, as long as it achieves electrical connection with the resistance heating layer 5.

[0061] Specifically, the resistance heating layer 5 can be a surface heating element, such as a continuous cylindrical surface. Of course, the resistance heating layer 5 can also be any shape that satisfies the heating effect, as shown in [reference needed]. Figure 7 , Figure 7 This is a planar schematic diagram of the radiation layer, the resistance heating film layer, and the electrode layer provided in an embodiment of this application; the resistance heating layer 5 can also be W-shaped, M-shaped, or spiral-shaped, etc.

[0062] The material of the resistance heating layer 5 can be a mixture of metal Ag and glass, or a silver-palladium alloy, or other materials with a positive temperature coefficient of resistance; or other types of resistance heating materials with a negative temperature coefficient of resistance.

[0063] In this specific embodiment, the radiating layer 2 can be made of a high infrared emissivity material that is either conductive or insulating; such as at least one of perovskite, spinel, carbide, silicide, nitride, oxide, and rare earth materials. When the radiating layer 2 is made of a conductive material, an insulating layer can be further provided between the radiating layer 2 and the resistance heating layer 5 to prevent short circuits. The material and arrangement of the insulating layer are similar to those described above.

[0064] In another embodiment, see Figure 8 , Figure 8 A cross-sectional view of the heating assembly provided in the fifth specific embodiment of this application; and as described above. Figures 2 to 7 The heating component 10 provided in the corresponding embodiment differs in that the radiation layer 2 is disposed on the side of the inner wall of the sidewall of the substrate 1; compared with the scheme in which the radiation layer 2 is disposed on the side of the outer wall of the sidewall of the substrate 1, the infrared rays radiated by the radiation layer 2 can directly heat the aerosol generating product 22 without passing through the substrate 1, which further improves the utilization rate of infrared rays.

[0065] In one specific embodiment, such as Figure 8 As shown, electrode layer 3 can also be electrically connected to radiation layer 2, so that after electrode layer 3 is energized, current flows through radiation layer 2, causing the temperature of radiation layer 2 to rise and excite higher infrared radiation; see the above for details. Figure 2 The relevant description of the corresponding embodiments. Wherein, as... Figure 8 As shown, in this specific embodiment, the electrode layer 3 can also be disposed on the inner wall surface of the sidewall of the substrate 1 and disposed in the same layer as the radiation layer 2. Of course, the electrode layer 3 can also be disposed on the side surface of the substrate 1 away from the radiation layer 2, or on the side surface of the radiation layer 2 away from the substrate 1.

[0066] The substrate 1 can be an insulating substrate, and the radiating layer 2 is specifically disposed on the inner wall surface of the sidewall of the substrate 1, as detailed in the above-mentioned text. Of course, the substrate 1 can also be a conductive metal substrate. In this case, in order to prevent short circuit between the radiating layer 2 and the substrate 1, an insulating layer can be disposed between the radiating layer 2 and the substrate 1.

[0067] In another specific embodiment, see Figure 9 , Figure 9 A cross-sectional view of the heating assembly provided in the sixth specific embodiment of this application; and as described above. Figure 8 The heating assembly 10 provided in the corresponding embodiment differs in that the substrate 1 further includes a conductive coil 4, and the electrode layer 3 is specifically electrically connected to the conductive coil 4 to supply power to the conductive coil 4. In this specific embodiment, the substrate 1 is made of a material capable of generating eddy currents and heating by sensing changing magnetic fields; the substrate 1 can specifically be a metal substrate, such as one or more of iron-based, cobalt-based, or nickel-based metals or alloys, and ferrites.

[0068] In this specific embodiment, the conductive coil 4 is arranged around the periphery of the substrate 1 to generate a changing magnetic field when energized. The substrate 1 induces eddy currents and heats up in the high-frequency changing magnetic field generated by the conductive coil 4, thereby converting electrical energy into heat energy. The heat is then transferred to the radiating layer 2 through heat conduction, causing the radiating layer 2 to heat up and be excited, thereby radiating infrared radiation to heat the aerosol and generate the product 22.

[0069] Specifically, the radiating layer 2 can also be made of a material capable of generating eddy currents and heating by sensing changing magnetic fields, so that the radiating layer 2 can also sense changes in the magnetic field and generate eddy currents and heat up in the high-frequency changing magnetic field generated by the conductive coil 4; thereby improving the overall heating efficiency of the heating assembly 10. It should be noted that, in this embodiment, an insulating layer is provided between the radiating layer 2 and the substrate 1.

[0070] In yet another specific embodiment, see Figure 10 , Figure 10 A cross-sectional view of the heating assembly provided in the seventh specific embodiment of this application; and as described above. Figure 8 The heating assembly 10 provided in the corresponding embodiment differs in that it further includes a resistance heating layer 5, disposed on the side of the substrate 1 facing away from the radiation layer 2. The electrode layer 3 is specifically electrically connected to the resistance heating layer 5. When the electrode layer 3 is energized, current flows through the resistance heating layer 5, causing it to generate heat, which in turn heats the substrate 1. The substrate 1 then conducts the heat to the radiation layer 2 through thermal conduction, thereby heating the radiation layer 2 and causing it to radiate infrared rays. The electrode layer 3 can be disposed on the surface of the resistance heating layer 5 facing away from the radiation layer 2 or disposed in the same layer as the resistance heating layer 5. For details, please refer to the above description of the electrode layer 3's placement.

[0071] When the substrate 1 is an insulating material, the resistance heating layer 5 can be disposed on the surface of the substrate 1 facing away from the radiation layer 2. When the substrate 1 is a conductive metal substrate, an insulating layer is disposed between the resistance heating layer 5 and the substrate 1 to prevent short circuits. The material and specific arrangement of the insulating layer can be found in the above description.

[0072] The heating component 10 provided in this embodiment, by using a hollow cavity 12 with one open end 11 for housing the aerosol generating product 22, can effectively reduce the amount of low-temperature fresh air flowing through the cavity 12 through the aerosol generating product 22 during the suction process. This allows the aerosol generating product 22 to be in a negative pressure and low-oxygen state in the initial stage of heating. Under the low-oxygen negative pressure suction condition, the materials in the aerosol generating product 22 mainly undergo hydrogenation, reduction, and pyrolysis reactions, effectively increasing the types and content of aroma-producing substances formed by atomization. This overcomes the problem of insufficient aroma-producing substances due to sufficient oxidation when fresh air flows through the aerosol generating product 22. At the same time, it can ensure that the aerosol generating product 22 is always in a relatively stable pyrolysis temperature environment, overcoming the problem of unstable pyrolysis reactions caused by the rapid drop in temperature of the aerosol generating product 22 due to the flow of fresh air. In addition, by providing a radiation layer 2 on the side wall of the substrate 1 to radiate infrared rays when heated, the aerosol generation product 22 in the cavity 12 is heated, which effectively improves the utilization rate and heating uniformity of the aerosol generation product 22.

[0073] See Figure 11 , Figure 11 This is a schematic diagram of the structure of an atomizer provided in one embodiment of this application. In this embodiment, an atomizer 20 is provided, which includes a heating component 10, a housing 21, and an aerosol generating article 22. The heating component 10 is the same as the heating component 10 provided in any of the above embodiments, and its specific structure and function can be found in the relevant descriptions above, which will not be repeated here.

[0074] A portion of the housing 21 is detachably connected to the cavity 12 of the heating assembly 10, while the remaining portion extends out of the heating assembly 10. In a specific embodiment, the housing 21 has a receiving cavity, an air outlet channel 212, and at least one air inlet 211. The receiving cavity is formed in the portion of the housing 21 located within the heating assembly 10, and the aerosol-generating article 22 is housed within the receiving cavity. The air outlet channel 212 connects the receiving cavity and each air inlet 211. The number of air inlets 211 can be two, three, four, or more. Each air inlet 211 connects the receiving cavity to the outside air, and each air inlet 211 is located on the portion of the housing 21 extending out of the heating assembly 10, near the opening 11 of the heating assembly 10. During the suction process, air flows in through the air inlet 211, carries away the aerosol generated by the heating assembly 10 through the opening 11 of the substrate 1, and flows out through the air outlet channel 212.

[0075] The atomizer 20 provided in this embodiment, by making the substrate 1 a hollow cavity 12 with one end open 11, and setting the air inlet 211 communicating with the receiving cavity outside the substrate 1 and located on the shell 21 near the opening 11 of the substrate 1, can carry away the aerosol formed by the heating component 10 during the suction process, and effectively reduce the amount of low-temperature fresh air flowing through the aerosol generating product 22, so that the aerosol generating product 22 can be in a negative pressure and low-oxygen state in the early stage of heating. Under the low-oxygen negative pressure suction condition, the material in the aerosol generating product 22 mainly undergoes hydrogenation, reduction and pyrolysis reactions, which effectively increases the types and contents of aroma substances formed by atomization, and overcomes the problem of less aroma substances due to sufficient oxidation when fresh air flows through the aerosol generating product 22. At the same time, it can ensure that the aerosol generating product 22 is always in a relatively stable pyrolysis temperature environment, and overcome the problem of unstable pyrolysis reaction caused by the rapid drop in temperature of the aerosol generating product 22 due to the flow of fresh air.

[0076] See Figure 12 , Figure 12 This is a simplified structural diagram of an aerosol generating apparatus according to an embodiment of this application. In this embodiment, an aerosol generating apparatus is provided, which includes a heating component 10 and a power supply component 30.

[0077] The heating component 10 is used to heat and atomize the aerosol to generate the product 22 when energized, for the user to inhale. The specific structure and function of the heating component 10 can be found in the description of the heating component 10 provided in the above embodiments, and it can achieve the same or similar technical effects, which will not be repeated here.

[0078] The power supply component 30 is electrically connected to the heating component 10 and is used to supply power to the heating component 10 to ensure that the aerosol generating device can operate normally. The power supply component 30 can be a dry cell battery, lithium battery, etc.

[0079] See Figure 13 , Figure 13 This is a simplified structural diagram of an aerosol generating apparatus according to another embodiment of this application. In this embodiment, another aerosol generating apparatus is provided, which includes an atomizer 20 and a power supply assembly 30.

[0080] The atomizer 20 is used to heat and atomize the aerosol to generate the product 22 when powered on, for the user to inhale. The specific structure and function of the atomizer 20 can be found in the description of the atomizer 20 provided in the above embodiments, and it can achieve the same or similar technical effects, which will not be repeated here.

[0081] The power supply assembly 30 is electrically connected to the atomizer 20 and is used to supply power to the atomizer 20 to ensure that the aerosol generating device can operate normally. The power supply assembly 30 can be a dry cell battery, lithium battery, etc.

[0082] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes 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 scope of patent protection of this application.

Claims

1. A heating assembly, characterized in that, include: The substrate is a hollow cavity with one end open, used to contain or remove aerosol-generated products from the cavity through the opening. A radiation layer, at least corresponding to the sidewall of the substrate, is provided for radiating infrared rays when heated to heat the aerosol in the cavity to generate the article; The heating assembly also includes a conductive coil, which is arranged around the periphery of the substrate to generate a changing magnetic field when energized; The substrate forms eddy currents and generates heat in the changing magnetic field to heat the radiation layer.

2. The heating assembly according to claim 1, characterized in that, The radiation layer is located on the outer wall of the sidewall of the substrate and is used to generate heat when energized to heat the aerosol in the cavity to generate the product.

3. The heating assembly according to claim 2, characterized in that, The substrate is a conductive metal substrate; The heating assembly further includes an insulating layer disposed between the radiating layer and the substrate.

4. The heating assembly according to claim 2 or 3, characterized in that, The radiation layer is provided on the entire outer wall surface corresponding to the sidewall of the substrate.

5. The heating assembly according to claim 2 or 3, characterized in that, It also includes an electrode layer, which is electrically connected to the radiation layer to supply power to the radiation layer; The electrode layer is disposed on the surface of the radiation layer opposite to the substrate; or, the electrode layer and the radiation layer are disposed in the same layer.

6. The heating assembly according to claim 1, characterized in that, The radiation layer is located on one side of the outer wall of the substrate, and the radiation layer is heated by forming eddy currents in the changing magnetic field.

7. The heating assembly according to claim 1, characterized in that, The radiation layer is located on the inner wall surface of the sidewall of the substrate.

8. The heating assembly according to claim 1, characterized in that, The radiation layer is an infrared layer.

9. An atomizer, characterized in that, include: The heating assembly as described in any one of claims 1-8; The housing has a receiving cavity and at least one air inlet communicating the receiving cavity with the outside air; The aerosol-generated product is contained within the containment cavity; The housing is partially detachably connected to the cavity of the heating assembly; at least one air inlet is located on the portion of the housing that extends out of the heating assembly.

10. An aerosol generating device, characterized in that, include: One of a heating component and an atomizer; wherein the heating component is the heating component as described in any one of claims 1-8; and the atomizer is the atomizer as described in claim 9; A power supply component, electrically connected to the heating component or the atomizer, is used to supply power to the heating component or the atomizer.

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