Heating assembly, atomizer and aerosol generating device

Abstract

The present application provides a heating assembly (10), an atomizer (20) and an aerosol generating device. The corresponding heating assembly (10) includes a substrate and a radiation layer. Here, the substrate (1) is a hollow cavity having an opening (11) at one end, and is used to accommodate the aerosol generating product (22) into the cavity (12) or take it out from the cavity (12) through the opening (11). The radiation layer (2) is installed at least corresponding to the side wall of the substrate (1), and is used to emit infrared rays when heated to heat the aerosol generating product (22) in the cavity (12). The corresponding heating assembly (10) can effectively increase the types and contents of the atomized fragrance substances, effectively improve the utilization rate and heating uniformity of the aerosol generating product (22), and at the same time, ensure that the aerosol generating product (22) is always in a stable decomposition temperature environment.

Description

Technical Field

[0001] <Cross - Reference to Related Applications> This application claims priority from a Chinese patent application with the application number 202210936179.6 filed on August 3, 2022, and the entire content of this Chinese patent application is incorporated herein by reference.

[0002] The present invention relates to the field of electronic atomization technology, and particularly to a heating assembly, an atomizer, and an aerosol generating device.

Background Art

[0003] Low - temperature firing type aerosol generating devices have advantages such as being safe to use, convenient, healthy, and environmentally friendly, and thus are attracting more and more attention and support from people.

[0004] An aerosol generating device usually includes a heating assembly and a power supply assembly. The heating assembly is used to accommodate an aerosol - generating product, heat and atomize the aerosol - generating product, thereby forming an inhalable aerosol. Currently, the ventilation method of the heating assembly is normal - pressure oxygen suction, that is, an air flow is introduced to the outside of the heating assembly, and the air flow continuously passes through the aerosol - generating product and carries out the aerosol formed by atomization.

[0005] However, when the air flow passes through the aerosol - generating product, the heating temperature of the aerosol - generating product drops sharply, the stability of the decomposition reaction of the aerosol - generating product is low, and the air flow supplies sufficient oxygen, so that the reaction of the aerosol - generating product is mainly an oxidation reaction, the types and contents of the aromatic substances formed by atomization are relatively small, and the satisfaction of the user experience is low.

Summary of the Invention

[0006] The heating assembly, atomizer, and aerosol generating device provided by this application aim to solve the problem that when an air flow passes through an aerosol generating product, the heating temperature of the aerosol generating product drops sharply, the stability of the decomposition reaction of the aerosol generating product is low, and the air flow supplies sufficient oxygen, thereby causing the aerosol generating product to mainly undergo an oxidation reaction, resulting in a decrease in the content and type of components of the aerosol formed by atomization and a low satisfaction of the user experience.

[0007] To solve the above technical problems, one technical solution adopted by this application is as follows. Provide a heating assembly. The heating assembly includes a substrate and a radiation layer. Here, the substrate is a hollow cavity having an opening at one end, which is used to accommodate or take out an aerosol generating product into or from the cavity through the opening, and the radiation layer is installed at least corresponding to the side wall of the substrate and emits infrared rays when heated, and is used to heat the aerosol generating product in the cavity.

[0008] Here, the heating assembly further includes a resistive heating layer, which is installed on the side where the outer wall surface of the side wall of the substrate is located and is used to generate heat when energized to heat the radiation layer.

[0009] Here, the radiation layer is installed on the side where the outer wall surface of the side wall of the substrate is located, the resistive heating layer is installed on the side away from the substrate of the radiation layer, or the radiation layer is installed on the side where the inner wall surface of the side wall of the substrate is located, and the resistive heating layer is installed on the side away from the radiation layer of the substrate.

[0010] Here, the substrate is a transparent substrate.

[0011] Here, the radiation layer is provided on the side where the outer wall surface of the side wall of the substrate is located and is used to generate heat when energized to heat the aerosol generating product in the cavity.

[0012] Here, the substrate is an insulating base material, and the radiation layer is provided on the outer wall surface of the side wall of the substrate.

[0013] Here, the substrate is a conductive metal base material, and the heating assembly further includes an insulating layer, and the insulating layer is provided between the radiation layer and the substrate.

[0014] Here, the radiation layer is installed corresponding to the entire outer wall surface of the side wall of the substrate.

[0015] Here, the heating assembly further includes an electrode layer, and the electrode layer is electrically connected to the radiation layer in order to supply power to the radiation layer. Here, the electrode layer is installed on the side surface of the radiation layer away from the substrate, or the electrode layer is installed in the same layer as the radiation layer.

[0016] Here, the heating assembly further includes a conductive coil, and the conductive coil is installed surrounding the outer periphery of the radiation layer and is used to generate a changing magnetic field when energized. The radiation layer is provided on the side where the outer wall surface of the side wall of the substrate is located, and the radiation layer forms eddy currents and is heated in the changing magnetic field.

[0017] Here, the heating assembly further includes a conductive coil, and the conductive coil is installed surrounding the periphery of the substrate and is used to generate a changing magnetic field when energized. The radiation layer is provided on the side where the inner wall surface of the side wall of the substrate is located, and the substrate forms eddy currents in the changing magnetic field and thereby heats the radiation layer.

[0018] Here, the radiation layer is an infrared layer.

[0019] To solve the above technical problems, another technical solution adopted by the present application is as follows. Provide an atomizer. The atomizer includes the above heating assembly, a shell, and an aerosol-generating product. Here, the shell has a receiving cavity and at least one air inlet communicating the receiving cavity with external air. The aerosol-generating product is accommodated in the receiving cavity. Here, a part of the shell is removably connected into the cavity of the heating assembly, and at least one of the air inlets is provided at a part of the shell extending outside the heating assembly.

[0020] To solve the above technical problems, yet another technical solution adopted by the present application is as follows. Provide an aerosol-generating device. The aerosol-generating device includes one of a heating assembly and an atomizer, and a power supply assembly. Here, the heating assembly is the above heating assembly, the atomizer is the above atomizer, the power supply assembly is electrically connected to the heating assembly or the atomizer, and is used to supply power to the heating assembly or the atomizer.

[0021] The beneficial effects of the embodiments of this application are different from those of the prior art. In the embodiments of this application, a heating assembly, an atomizer, and an aerosol generating device are provided. By using, as the base body, a hollow cavity having an opening at one end for accommodating an aerosol generating product in the heating assembly, during the suction process, the amount of low-temperature fresh air flow passing through the aerosol generating product through the cavity can be effectively reduced, whereby the aerosol generating product can be in a negative pressure and low oxygen state at the initial stage of heating. Under the suction conditions of low oxygen and negative pressure, the materials in the aerosol generating product mainly undergo hydrogenation, reduction, and decomposition reactions, effectively increasing the types and contents of the aromatic substances formed by atomization, and solving the problem that the aromatic substances decrease because sufficient oxidation occurs when the fresh air flow flows through the aerosol generating product. At the same time, it can be ensured that the aerosol generating product is always in a stable decomposition temperature environment, and since the fresh air flow flows through the aerosol generating product, the problem of unstable decomposition reactions caused by the rapid decrease in the temperature of the aerosol generating product is overcome. Further, by installing a radiation layer on the side wall of the base body, infrared rays are radiated when heated, thereby heating the aerosol generating product in the heating cavity and effectively improving the utilization rate and heating uniformity of the aerosol generating product.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Embodiments for Carrying Out the Invention

[0023] Hereinafter, the technical solutions of the embodiments of the present application will be clearly and completely described with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without inventive labor shall fall within the protection scope of the present application.

[0024] In this application, terms such as "first", "second", "third", etc. are used only for explanatory purposes and should not be construed as indicating or implying relative importance or suggesting the number of the indicated technical features. Therefore, features defined as "first", "second", "third" can explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are used to interpret the relative positional relationship, movement status, etc. between each component in a specific posture (such as shown in the drawings). When the specific posture changes, the directionality changes accordingly. Also, the terms "comprising", "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, and may optionally further include steps or units not listed, or optionally further include other steps or units specific to these processes, methods, products or devices.

[0025] As used herein, "embodiment" means that a specific feature, structure or characteristic described with reference to the embodiment may be included in at least one embodiment of this application. The repeated appearance of this correlative term in each part of the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. As will be explicitly and implicitly understood by those skilled in the art, the embodiments described herein can be combined with other embodiments.

[0026] Hereinafter, this application will be described in detail with reference to the drawings and embodiments.

[0027] Referring to FIG. 1, FIG. 1 is a schematic diagram of the overall structure of the heating assembly provided by the embodiment of the present application. FIG. 2 is a cross-sectional view of the heating assembly provided by the first embodiment of the present application. In this embodiment, a heating assembly 10 is provided, and the corresponding heating assembly 10 heats and atomizes the aerosol-generating product 22 (see FIG. 11) when energized to form an aerosol. This heating assembly 10 can be used in various fields such as medical, beauty, and leisure smoking. Here, the aerosol-generating product 22 preferably uses a solid matrix and contains one or more powders, granules, fragments, strips, or flakes of plant leaves such as tobacco, herb leaves, tea leaves, and mint leaves. The solid matrix can contain additional volatile flavor compounds released when heated. Of course, the aerosol-generating product 22 may also be a liquid matrix or a paste-like matrix such as oil and medicament solution with added aromatic components. The following embodiments all exemplify the aerosol-generating product 22 using a solid matrix.

[0028] As shown in FIG. 2, the corresponding heating assembly 10 includes a base 1, a radiation layer 2, and an electrode layer 3.

[0029] Here, referring to FIG. 3, FIG. 3 is a schematic diagram of the overall structure of the base provided by one embodiment of the present application. The base 1 is a hollow cavity 12 having an opening 11 at one end. For example, the base 1 may be a hollow cylinder and is used to accommodate the aerosol-generating product 22 into or take it out from the cavity 12 through the opening 11. Here, the inner diameter dimension of the cavity 12 can be adapted according to the outer diameter of the aerosol-generating product 22 to be accommodated as needed, thereby reducing the gap between the aerosol-generating product 22 and the side wall of the cavity 12.

[0030] Here, by making the substrate 1 for accommodating the aerosol generating product 22 a hollow cavity 12 having an opening 11 at one end, compared with a hollow substrate having openings at both ends, in the suction process, the amount of the cold fresh air flow passing through the cavity 12 and flowing to the aerosol generating product 22 can be effectively reduced, whereby the aerosol generating product 22 can be made in a negative pressure and low oxygen state at the initial stage of heating. Under the suction conditions of low oxygen and negative pressure, the materials in the aerosol generating product 22 mainly undergo hydrogenation, reduction and decomposition reactions, effectively increasing the types and contents of the aromatic substances formed by atomization, and overcoming the problem that the aromatic substances decrease due to sufficient oxidation when the fresh air flow passes through the aerosol generating product 22. At the same time, it can be ensured that the aerosol generating product 22 is always in a relatively stable decomposition temperature environment, and the problem of unstable decomposition reaction caused by the fresh air flow passing through the aerosol generating product 22 and rapidly decreasing the temperature of the aerosol generating product 22 is overcome.

[0031] As shown in FIG. 2, the radiation layer 2 is installed corresponding to the side wall of the substrate 1 and is used to radiate infrared rays when heated, thereby heating the aerosol generating product 22 in the cavity 12 and effectively improving the utilization rate of the aerosol generating product 22 and the heating uniformity. Of course, in other embodiments, the radiation layer 2 may be further arranged corresponding to the bottom wall of the substrate 1 (that is, the end wall at one end arranged opposite to the opening 11) in order to improve the heating efficiency of the heating assembly 10.

[0032] In a specific embodiment, the radiation layer 2 may be an infrared layer. When the infrared layer is heated, it emits infrared rays. Since the heat radiation ability of the infrared rays is strong, the infrared rays can penetrate the inside of the aerosol generating product 22 and simultaneously heat the entire inside and outside of the aerosol generating product 22, reducing the temperature difference between the inside and outside of the aerosol generating product 22. Compared with the conventional resistive heating method and electromagnetic heating method, the infrared heating method has better heating uniformity and can prevent the problem of charring of the aerosol generating product 22 caused by local high temperature. Specifically, the radiation layer 2 may be a far-infrared ceramic layer, a metal layer or a conductive carbon layer, and can be specifically selected as needed.

[0033] In one specific embodiment, the radiation layer 2 is an infrared ceramic coating, and the radiation layer 2 emits infrared rays for heating the aerosol generating product 22 during operation. The heating wavelength of the infrared rays is 2.5um to 20um. Based on the characteristics of the heated aerosol generating product 22, generally the heating temperature is 200°C to 300°C, and the infrared emissivity is 0.8 or more. When the heating temperature reaches about 350°C, the energy radiation extreme value is mainly in the 3 - 5um band.

[0034] In one embodiment, continuing to refer to FIG. 2, specifically, the radiation layer 2 is installed on the side where the outer wall surface of the side wall of the base 1 is located. The infrared rays radiated from the radiation layer 2 penetrate the base 1 and enter the inside of the cavity 12 to heat the aerosol generating product 22 accommodated in the cavity 12. Specifically, the base 1 may be a transparent base. In this way, more infrared rays radiated from the radiation layer 2 can penetrate the base 1 to heat the aerosol generating product 22 in the cavity 12, effectively improving the utilization rate of the infrared rays and the heating efficiency of the aerosol generating product 22.

[0035] In a specific embodiment, as shown in FIG. 2, the electrode layer 3 is electrically connected to the radiation layer 2. After the electrode layer 3 is energized, a 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 shorter than 4 μm, 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, exciting far-infrared rays to heat the aerosol generating product 22 inside it, thereby enabling the aerosol generating product 22 in the cavity 12 to be heated by radiation and heat conduction, and improving the heating uniformity and utilization rate of the aerosol generating product 22.

[0036] Here, as shown in FIG. 2, the electrode layer 3 may be installed on the side surface of the radiation layer 2 away from the substrate 1, thereby being electrically connected to the radiation layer 2. Of course, when the radiation layer 2 does not cover the edges at both ends of the substrate 1, as shown in FIG. 4, FIG. 4 is a cross-sectional view of the heating assembly provided by the second embodiment of the present application. The electrode layer 3 can be further installed at the edges at both ends of the substrate 1 and located on the outer wall surface of the side wall of the substrate 1, and can be installed in the same layer as the radiation layer 2, thereby realizing electrical connection with the radiation layer 2. In this way, the spatial position on the surface of the substrate 1 can be fully utilized, thereby reducing the spatial occupied area of the entire heating assembly 10.

[0037] Specifically, the electrode layer 3 can be sintered on the outer wall surface of the side wall of the radiation layer 2 or the substrate 1 using a metal material with high thermal conductivity.

[0038] In this embodiment, the material of the substrate 1 may be an insulating base material. Specifically, the substrate 1 can be composed of a material that is resistant to high temperatures and has a higher infrared transmittance, including but not limited to the following materials. The substrate 1 can be quartz glass, yttrium aluminum garnet single crystal, germanium single crystal, magnesium fluoride ceramics, yttrium oxide ceramics, magnesium aluminum spinel ceramics, sapphire, silicon carbide, etc. Preferably, the substrate 1 is made of quartz glass.

[0039] The radiation layer 2 is specifically formed on the entire outer wall surface of the side wall of the substrate 1 by means such as silk screen printing, coating, sputtering, printing, or tape casting, thereby ensuring that all the aerosol generating products 22 located in the cavity 12 are heated. Here, the shape, area, and thickness of the radiation layer 2 can be set according to actual needs. For example, the shape, area, and thickness of the radiation layer 2 are set based on a preset scheme of the temperature field of the heating assembly 10. For example, the shape of the radiation layer 2 may be a continuous film shape, a porous network shape, a strip shape, etc., and specifically, a film-like surface heating can be manufactured. In order to make the heating effect of the radiation layer 2 more uniform, it can be understood that the thickness of the radiation layer 2 is the same everywhere on the substrate 1. Of course, for some special needs, the thickness of the radiation layer 2 on the substrate 1 may be set to be different, so that the infrared energy density in different regions of the heating assembly 10 is different, that is, when the heating assembly 10 is energized and operates, different regions have different heat densities, thus forming different temperature fields.

[0040] Specifically, for the radiation layer 2, a conductor or semiconductor material that conducts electricity and generates heat can be selected. For example, the material of the radiation layer 2 is an ABO3-based perovskite material with metallic properties. Here, A is one or more of La, Sr, Ca, Mg, Bi, and B is one or more of AI, Ni, Fe, Co, Mn, Mo, Cr.

[0041] Of course, in other specific embodiments, the material of the substrate 1 may be a conductive metal substrate, such as a stainless steel substrate or a metal aluminum base, etc. In order to prevent a short circuit between the substrate 1 and the radiation layer 2, the heating assembly 10 further includes an insulating layer. The insulating layer is installed between the radiation layer 2 and the resistive heating layer 5. Specifically, the insulating layer can be formed on the outer wall surface of the side wall of the substrate 1 by means such as silk printing, coating, sputtering, printing, or tape casting. The material of the insulating layer may specifically be a high-temperature resistant insulating material such as ceramic, quartz glass, mica, etc.

[0042] In other specific embodiments, referring to FIG. 5, FIG. 5 is a cross-sectional view of a heating assembly provided by the third embodiment of the present application. The difference between the heating assembly 10 provided by the embodiment corresponding to FIG. 2 above is as follows. The heating assembly 10 further includes a conductive coil 4, and the electrode layer 3 is specifically electrically connected to the conductive coil 4, thereby energizing the conductive coil 4. The radiation layer 2 includes an infrared material and a ferromagnetic material doped in the infrared material. Here, the infrared material may be one or more of perovskite, spinel, olivine, and carbide. The ferromagnetic material may be one or more of iron-based metals, cobalt-based metals, nickel-based metals, their alloys, and ferrites.

[0043] In this specific embodiment, the conductive coil 4 is arranged around the radiation layer 2 to generate a changing magnetic field when energized. The ferromagnetic material of the radiation layer 2 forms eddy currents and is heated in the changing magnetic field.

[0044] Specifically, the material of the conductive coil 4 may be a conductive metal, such as copper, aluminum, silver, etc. In this embodiment, it is preferable that the conductive coil 4 is a copper metal coil. The conductive coil 4 may specifically be an enameled wire or a litz wire, and is wound on the side away from the substrate 1 of the radiation layer 2. As can be understood, in this embodiment, the paint on the outside of the wire is an insulating material, thereby preventing the problem of short circuit between coils.

[0045] In a more specific embodiment, referring to FIG. 6, FIG. 6 is a cross-sectional view of the heating assembly provided by the fourth embodiment of the present application. The differences from the heating assembly 10 provided by the embodiment corresponding to FIG. 2 above are as follows. The heating assembly 10 further includes a resistive heating layer 5, and the corresponding resistive heating layer 5 is installed on the surface of the substrate 1 of the radiation layer 2 on the side away from the substrate 1. The electrode layer 3 is specifically electrically connected to the resistive heating layer 5. After the electrode layer 3 is energized, current flows through the resistive heating layer 5, generating heat in the resistive heating layer 5, heating the radiation layer 2, and thereby heating the radiation layer 2 to emit infrared rays. Specifically, the electrode layer 3 may be installed on the surface of the resistive heating layer 5 on the side away from the radiation layer 2, or may be installed in the same layer as the resistive heating layer 5. In this embodiment, as long as the electrical connection with the resistive heating layer 5 is realized, the arrangement method of the electrode layer 3 is not limited.

[0046] Here, the resistive heating layer 5 may specifically be in the form of surface heating such as a continuous cylindrical surface, for example. Of course, the resistive heating layer 5 may be in any pattern that satisfies the heating effect. For example, referring to FIG. 7, FIG. 7 is a schematic plan view of the radiation layer, resistive heating film layer, and electrode layer provided by the embodiment of the present application. The resistive heating layer 5 may be in the form of a W shape, an M shape, a spiral shape, or the like.

[0047] The material of the resistive heating layer 5 may be a mixture of metal Ag and glass, or a material having a positive temperature coefficient characteristic of resistance such as a silver palladium alloy, or a resistive heating material having a negative temperature coefficient characteristic of resistance.

[0048] In this specific embodiment, the material of the radiation layer 2 may be a highly infrared emissivity material with conductivity or insulation. For example, the material of the radiation layer 2 may be composed of at least one of highly infrared emissivity materials such as perovskite-based, spinel-based, carbides, silicides, nitrides, oxides, and rare earth materials. When the radiation layer 2 is a conductive material, an insulating layer can be further installed between the radiation layer 2 and the resistive heating layer 5 to prevent short circuits. The material and installation form of the insulating layer are the same as those of the above-mentioned insulating layer.

[0049] In other embodiments, referring to FIG. 8, FIG. 8 is a cross-sectional view of a heating assembly provided by the fifth embodiment of the present application. The difference from the heating assembly 10 provided by the embodiments corresponding to FIGS. 2 to 7 above is as follows. The radiation layer 2 is installed on the side where the inner wall surface of the side wall of the base 1 is located. Compared with the scheme where the radiation layer 2 is arranged on the side where the outer wall surface of the side wall of the base 1 is located, the infrared rays radiated from the radiation layer 2 can directly heat the aerosol generating product 22 without the need to penetrate the base 1, further improving the utilization rate of infrared rays.

[0050] Here, in a specific embodiment, as shown in FIG. 8, the electrode layer 3 may similarly be electrically connected to the radiation layer 2. Thereby, after the electrode layer 3 is energized, current flows through the radiation layer 2, raising the temperature of the radiation layer 2 and exciting higher infrared radiation. Specifically, reference can be made to the relevant description of the embodiment corresponding to FIG. 2 above. Here, as shown in FIG. 8, the electrode layer 3 in this specific embodiment may be installed on the inner wall surface of the side wall of the base 1 and installed in the same layer as the radiation layer 2. Of course, the electrode layer 3 may be installed on the surface of the base 1 on the side away from the radiation layer 2, or on the surface of the radiation layer 2 on the side away from the base 1.

[0051] Here, the base 1 may be an insulating base material. Specifically, the radiation layer 2 is installed on the inner wall surface of the side wall of the base 1. Specifically, reference can be made to the above relevant text. Of course, the base 1 may be a conductive metal base material. In this case, in order to prevent short-circuiting between the radiation layer 2 and the base 1, an insulating layer can be installed between the radiation layer 2 and the base 1.

[0052] In other specific embodiments, referring to FIG. 9, FIG. 9 is a cross-sectional view of a heating assembly provided by the sixth embodiment of the present application. The differences from the heating assembly 10 provided by the embodiment corresponding to FIG. 8 above are as follows. The base body 1 further includes a conductive coil 4, and the electrode layer 3 is specifically electrically connected to the conductive coil 4, thereby energizing the conductive coil 4. In this specific embodiment, the base body 1 is formed of a material that can induce a changing magnetic field to generate eddy currents and generate heat. The base body 1 may specifically be a metal material, for example, one or more of iron-based metals, cobalt-based metals, nickel-based metals or their alloys, and ferrites.

[0053] In this specific embodiment, the conductive coil 4 is arranged to surround the substrate 1 in order to generate a changing magnetic field when energized. The base body 1 induces a magnetic field change in the high-frequency changing magnetic field generated by the conductive coil 4 to generate eddy currents and generate heat, thereby converting electrical energy into thermal energy, and then transferring the heat to the radiation layer 2 by heat conduction, heating up and exciting the radiation layer 2, thereby radiating and heating infrared rays to heat the aerosol generating product 22.

[0054] Specifically, the radiation layer 2 may be formed of a material that can be induced to generate eddy currents and generate heat by a changing magnetic field, so that the radiation layer 2 can induce a magnetic field change in the high-frequency changing magnetic field generated by the conductive coil 4 to generate eddy currents and heat. Thereby, the overall heating efficiency of the heating assembly 10 can be improved. In this embodiment, an insulating layer is provided between the radiation layer 2 and the base body 1.

[0055] In yet another specific embodiment, referring to FIG. 10, FIG. 10 is a cross-sectional view of the heating assembly provided by the seventh embodiment of the present application. The difference between the heating assembly 10 provided by the embodiment corresponding to FIG. 8 above is as follows. The heating assembly 10 includes a resistive heating layer 5, and the corresponding resistive heating layer 5 is installed on the side away from the radiation layer 2 of the substrate 1. The electrode layer 3 is specifically electrically connected to the resistive heating layer 5. After the electrode layer 3 is energized, current flows through the resistive heating layer 5, the resistive heating layer 5 generates heat, heats the substrate 1, and the substrate 1 conducts heat to the radiation layer 2 by heat conduction, thereby heating the radiation layer 2 to emit infrared rays. Here, the electrode layer 3 may be installed on the surface of the resistive heating layer 5 on the side away from the radiation layer 2, or the electrode layer 3 may be installed in the same layer as the resistive heating layer 5. Specifically, the installation method of the above electrode layer 3 can be referred to.

[0056] Here, when the substrate 1 is an insulating substrate, the resistive heating layer 5 may be installed on the surface of the substrate 1 on the side away from the radiation layer 2. When the substrate 1 is a conductive metal substrate, an insulating layer is installed between the resistive heating layer 5 and the substrate 1 to prevent short circuits. The material of the insulating layer and the specific installation method can be referred to the above related description.

[0057] The heating assembly 10 provided by this embodiment uses the substrate 1 for accommodating the aerosol-generating product 22 as a hollow cavity 12 having an opening 11 at one end, so that the amount of the low-temperature fresh air flow passing through the cavity 12 and flowing through the aerosol-generating product 22 during the suction process can be effectively reduced. Thereby, in the initial stage of heating, the aerosol-generating product 22 can be made in a negative pressure and low oxygen state at the initial stage of heating. Under the suction conditions of low oxygen and negative pressure, the materials in the aerosol-generating product 22 mainly undergo hydrogenation, reduction and decomposition reactions, effectively increasing the types and contents of the aromatic substances formed by atomization, and overcoming the problem that the aromatic substances are reduced due to sufficient oxidation when the fresh air flow passes through the aerosol-generating product 22. At the same time, it can be ensured that the aerosol-generating product 22 is always in a relatively stable decomposition temperature environment, overcoming the problem that the temperature of the aerosol-generating product 22 is rapidly decreased by the fresh air flow passing through the aerosol-generating product 22, thereby causing an unstable decomposition reaction. In addition, by installing the radiation layer 2 on the side wall of the substrate 1, infrared rays are radiated when heated, thereby heating the aerosol-generating product 22 in the cavity 12 and effectively improving the utilization rate of the aerosol-generating product 22 and the heating uniformity.

[0058] Referring to FIG. 11, FIG. 11 is a schematic structural diagram of an atomizer provided by an embodiment of the present application. In this embodiment, an atomizer 20 is provided, and the atomizer 20 includes a heating assembly 10, a shell 21 and an aerosol-generating product 22. Here, the heating assembly 10 is the heating assembly 10 provided by any of the above embodiments, and its specific structure and function can be referred to the above related description, and the detailed description is omitted here.

[0059] A part of the shell 21 is removably connected within the cavity 12 of the heating assembly 10, and the remaining part extends outside the heating assembly 10. In a specific embodiment, the shell 21 has a receiving cavity, an exhaust passage 212, and at least one air inlet 211. Here, the receiving cavity is formed in the part of the shell 21 located within the heating assembly 10, and the aerosol-generating product 22 is accommodated within the receiving cavity. The exhaust passage 212 communicates the receiving cavity with each air inlet 211. The number of air inlets 211 may be two, three, four, or more. Each air inlet 211 communicates the receiving cavity with the external air respectively, and each air inlet 211 is installed in the part of the shell 21 that extends outside the heating assembly 10 and is close to the opening 11 of the heating assembly 10. During the suction process, the air flow flows in from the air inlet 211, and the aerosol formed by atomization by the heating assembly 10 through the opening 11 of the base 1 is carried away and flows out from the exhaust passage 212.

[0060] In the atomizer 20 provided in this embodiment, by making the base 1 a hollow cavity 12 having an opening 11 at one end, the air inlet 211 communicating with the receiving cavity is installed outside the base 1 and is located at the position of the shell 21 close to the opening 11 of the base 1. During the suction process, it carries away the aerosol formed by atomization by the heating assembly 10, effectively reducing the amount of the low-temperature fresh air flow passing through the aerosol-generating product 22. Thereby, the aerosol-generating product 22 is in a negative pressure and low-oxygen state at the initial stage of heating. Under the suction conditions of low oxygen and negative pressure, the materials in the aerosol-generating product 22 mainly undergo hydrogenation, reduction, and decomposition reactions, effectively increasing the types and contents of the aromatic substances formed by atomization, and overcoming the problem that the aromatic substances decrease due to sufficient oxidation when the fresh air flow passes 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 decomposition temperature environment, and overcome the problem that the temperature of the aerosol-generating product 22 is rapidly decreased by the fresh air flow passing through the aerosol-generating product 22, thereby causing an unstable decomposition reaction.

[0061] Referring to FIG. 12, FIG. 12 is a schematic structural diagram of an aerosol generating device provided by an embodiment of the present application. In this embodiment, an aerosol generating device is provided, and the aerosol generating device includes a heating assembly 10 and a power supply assembly 30.

[0062] Here, the heating assembly 10 is used to heat and atomize the aerosol generating product 22 when energized for the user to inhale. For the specific structure and function of the heating assembly 10, reference can be made to the related description of the heating assembly 10 provided in the above embodiment, and the same or similar technical effects can be achieved, and detailed description is omitted here.

[0063] The power supply assembly 30 is electrically connected to the heating assembly 10 and is used to supply power to the heating assembly 10, thereby ensuring that the aerosol generating device can operate normally. Specifically, the power supply assembly 30 may be a dry battery, a lithium battery, or the like.

[0064] Referring to FIG. 13, FIG. 13 is a schematic structural diagram of an aerosol generating device provided by another embodiment of the present application. In this embodiment, an aerosol generating device is provided, and the aerosol generating device includes an atomizer 20 and a power supply assembly 30.

[0065] Here, the aerosol 20 is used to heat and atomize the aerosol generating product 22 when energized for the user to inhale. For the specific structure and function of the atomizer 20, reference can be made to the related description of the atomizer 20 provided in the above embodiment, and the same or similar technical effects can be achieved, and description is omitted here.

[0066] The power supply assembly 30 is electrically connected to the atomizer 20 and is used to supply power to the atomizer 20, thereby ensuring that the aerosol generating device can operate normally. Specifically, the power supply assembly 30 may be a dry battery, a lithium battery, or the like.

[0067] The above are embodiments of the present application, which do not limit the scope of the patent of the present application. Any equivalent structure or equivalent process conversion carried out using the content of the specification and drawings of the present application, or any application directly or indirectly applicable to other related technical fields, are all similarly included within the scope of patent protection of the present application.

Claims

1. A heating assembly comprising a substrate and a radiation layer, wherein: The substrate is a hollow cavity having an opening at one end, and is used for accommodating an aerosol generating product into the cavity or taking out the aerosol generating product from the cavity through the opening; The radiation layer is installed at least corresponding to the side wall of the substrate, and is used for radiating infrared rays to heat the aerosol generating product in the cavity when heated. The heating assembly is characterized by the above.

2. The heating assembly further includes a resistive heating layer, and the resistive heating layer is installed on the side where the outer wall surface of the side wall of the substrate is located, and is used for generating heat when energized to heat the radiation layer. The heating assembly according to claim 1 is characterized by the above.

3. The radiation layer is installed on the side where the outer wall surface of the side wall of the substrate is located, and the resistive heating layer is installed on the side away from the substrate of the radiation layer, or The radiation layer is installed on the side where the inner wall surface of the side wall of the substrate is located, and the resistive heating layer is installed on the side away from the radiation layer of the substrate. The heating assembly according to claim 2 is characterized by the above.

4. The substrate is a transparent substrate. The heating assembly according to claim 2 is characterized by the above.

5. The radiation layer is provided on the side where the outer wall surface of the side wall of the substrate is located, and is used for generating heat when energized to heat the aerosol generating product in the cavity. The heating assembly according to claim 1 is characterized by the above.

6. The substrate is an insulating base material, and the radiation layer is provided on the outer wall surface of the side wall of the substrate. The heating assembly according to claim 5 is characterized by the above.

7. The substrate is a conductive metal base material, and the heating assembly further includes an insulating layer, The insulating layer is provided between the radiation layer and the substrate. The heating assembly according to claim 5 is characterized by the above.

8. The radiation layer is installed corresponding to the entire outer wall surface of the side wall of the substrate. The heating assembly according to claim 5 is characterized by the above.

9. The heating assembly further includes an electrode layer, and the electrode layer is electrically connected to the radiation layer for energizing the radiation layer, Here, the electrode layer is installed on the surface of the radiation layer on the side away from the substrate, or the electrode layer is installed in the same layer as the radiation layer. The heating assembly according to claim 5 is characterized by the above.

10. The heating assembly further includes a conductive coil, which is installed surrounding the radiation layer and is used to generate a changing magnetic field when energized. The radiation layer is provided on the side where the outer wall surface of the side wall of the substrate is located, and the radiation layer forms eddy currents in the changing magnetic field and is heated. The heating assembly according to claim 1 is characterized in that.

11. The heating assembly further includes a conductive coil, and the conductive coil is installed surrounding the substrate and is used to generate a changing magnetic field when energized. The radiation layer is provided on the side where the inner wall surface of the side wall of the substrate is located, and the substrate forms eddy currents in the changing magnetic field to generate heat so as to heat the radiation layer. The heating assembly according to claim 1 is characterized in that.

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

13. An atomizer including the heating assembly according to any one of claims 1 to 12, a shell, and an aerosol-generating product, The shell has a receiving cavity and at least one air inlet communicating the receiving cavity with external air. The aerosol-generating product is accommodated in the receiving cavity. Here, a part of the shell is removably connected into the cavity of the heating assembly, and the at least one air inlet is installed in a part of the shell extending outside the heating assembly. The atomizer is characterized in that.

14. An aerosol-generating device including one of the heating assembly and the atomizer and a power supply assembly, Here, the heating assembly is the heating assembly according to any one of claims 1 to 12, the atomizer is the atomizer according to claim 13, The power supply assembly is electrically connected to the heating assembly or the atomizer and is used to supply power to the heating assembly or the atomizer. The aerosol-generating device is characterized in that.

Images