CN115381142A

CN115381142A - Heating element, atomizer and aerosol generating device

Info

Publication number: CN115381142A
Application number: CN202210936179.6A
Authority: CN
Inventors: 梁峰; 杜贤武; 郭玉; 刘小力; 冼小毅
Original assignee: Shenzhen Maishi Technology Co Ltd
Current assignee: Shenzhen Maishi Technology Co Ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2022-11-25
Also published as: WO2024027386A1

Abstract

The application provides a heating element, atomizer and aerosol-generating device. This heating element includes: a substrate and a radiation layer; wherein the substrate is a hollow cavity open at one end for receiving or removing an aerosol-generating article through the opening into or out of the cavity; a radiation layer is disposed at least in correspondence with the side wall of the substrate for radiating infrared radiation when heated to heat the aerosol-generating article within the cavity. The heating component effectively increases the types and the content of aroma substances formed by atomization, and improves the utilization rate of aerosol generating products and the heating uniformity; meanwhile, the aerosol generating product can be ensured to be always in a relatively stable cracking temperature environment.

Description

Heating element, atomizer and aerosol generating device

Technical Field

The invention relates to the technical field of electronic atomization, in particular to a heating assembly, an atomizer and an aerosol generating device.

Background

Low-temperature aerosol generating devices are receiving increasing attention and popularity due to their advantages such as safe, convenient, healthy, and environmentally friendly use.

Aerosol-generating devices typically comprise a heating component and a power supply component. The heating assembly is for receiving an aerosol-generating article to heat and atomise the aerosol-generating article to form an aerosol for inhalation. Currently, the heating assembly is ventilated by atmospheric oxygen puff, i.e. by introducing a flow of air outside the heating assembly and continuously passing the air flow through the aerosol-generating article to carry the aerosol formed by the atomisation.

However, the heating temperature of the aerosol-generating article drops sharply as the air stream passes through the aerosol-generating article, and the aerosol-generating article has poor stability to undergoing a cracking reaction; and the air flow provides sufficient oxygen so that the reaction of the aerosol-generating article is dominated by oxidation, resulting in less types and content of aroma substances being formed by atomization and a less than satisfactory user experience.

Disclosure of Invention

The application provides a heating assembly, an atomizer and an aerosol generating device, which aim to solve the problems that the heating temperature of an aerosol generating product is sharply reduced and the stability of the aerosol generating product in cracking reaction is poor when air flows through the aerosol generating product; and the air flow provides sufficient oxygen so that the aerosol generating product is mainly oxidized, so that the content and the component types of the aerosol formed by atomization are less, and the user experience satisfaction is less.

In order to solve the technical problem, the application adopts a technical scheme that: a heating assembly is provided. This heating element includes: a base and a radiation layer; wherein the substrate is a hollow cavity open at one end for receiving or removing an aerosol-generating article through the opening into or out of the cavity; a radiation layer is disposed at least in correspondence with the side wall of the substrate for radiating infrared radiation when heated to heat the aerosol-generating article within the cavity.

The heating assembly further comprises a resistance heating layer which is arranged on one side where the outer wall surface of the side wall of the base body is located and used for generating heat to heat the radiation layer when the base body is electrified.

The radiation layer is arranged on one side where the outer wall surface of the side wall of the base body is located, and the resistance heating layer is arranged on one side, away from the base body, of the radiation layer; or the like, or, alternatively,

the radiation layer is arranged on one side where the inner wall surface of the side wall of the base body is located, and the resistance heating layer is arranged on one side, deviating from the radiation layer, of the base body.

Wherein the substrate is a transparent substrate.

Wherein the radiation layer is provided on the side of the side wall of the base on which the outer wall surface is located for generating heat when energised to heat an aerosol-generating article within the cavity.

Wherein the matrix is an insulating base material; the radiation layer is arranged on the outer wall surface of the side wall of the base body.

Wherein the base body is a conductive metal base material; the heating assembly further comprises an insulating layer, and the insulating layer is arranged between the radiation layer and the base body.

Wherein, the radiation layer corresponds to the whole outer wall surface setting of the lateral wall of base member.

The radiation layer is electrically connected with the electrode layer so as to electrify the radiation layer; the electrode layer is arranged on the surface of one side, away from the base body, of the radiation layer; or the like, or, alternatively,

the electrode layer and the radiation layer are arranged on the same layer.

The heating assembly further comprises a conductive coil, wherein the conductive coil is arranged around the periphery of the radiation layer and used for generating a variable magnetic field when the heating assembly is electrified; the radiation layer is arranged on one side where the outer wall surface of the side wall of the base body is located, and eddy current is formed in the variable magnetic field by the radiation layer to be heated.

The heating assembly further comprises a conductive coil, wherein the conductive coil is arranged around the periphery of the substrate and used for generating a variable magnetic field when the substrate is electrified; the radiation layer is arranged on one side of the inner wall surface of the side wall of the substrate, and the substrate forms eddy current in the variable magnetic field and generates heat to heat the radiation layer.

Wherein, the first and the second end of the pipe are connected with each other, the radiation layer is an infrared layer.

In order to solve the above technical problem, another technical solution adopted by the present application is: an atomizer is provided. The atomizer includes: the heating assembly, housing and aerosol-generating article referred to above; wherein, the shell is provided with an accommodating cavity and at least one air inlet hole for communicating the accommodating cavity with the outside air; an aerosol-generating article housed within the housing chamber; wherein part of the shell is detachably connected to the cavity of the heating assembly; the at least one air inlet is arranged on the part of the shell extending out of the heating assembly.

In order to solve the above technical problem, the present application adopts another technical solution: an aerosol-generating device is provided. The aerosol-generating device comprises: one of a heating assembly and an atomizer; wherein, the heating assembly is the heating assembly related to the above; the atomizer is the atomizer related to above; and the power supply component is electrically connected with the heating component or the atomizer and is used for supplying power to the heating component or the atomizer.

The beneficial effect of this application embodiment is different from prior art: according to the heating assembly, the atomizer and the aerosol generating device provided by the embodiment of the application, the base body for accommodating the aerosol generating product is the hollow cavity with one open end, so that the amount of low-temperature fresh air flow flowing through the aerosol generating product through the cavity can be effectively reduced in the suction process, and the aerosol generating product can be in a negative-pressure oxygen-reduced state in the initial heating stage; under the condition of oxygen-less negative pressure suction, the materials in the aerosol generating product mainly undergo hydrogenation, reduction and cracking reactions, so that the types and the contents of aroma substances formed by atomization are effectively increased, and the problem that the aroma substances are less due to full oxidation when fresh air flows through the aerosol generating product is solved. Meanwhile, the aerosol generating product can be ensured to be always in a relatively stable cracking temperature environment, and the problem of unstable cracking reaction caused by the fact that the temperature of the aerosol generating product is sharply reduced due to the fact that fresh air flows through the aerosol generating product is solved. In addition, the radiation layer is arranged on the side wall of the base body to radiate infrared rays when the base body is heated, so that the aerosol generating product in the cavity is heated, and the utilization rate of the aerosol generating product and the heating uniformity are effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of a heating assembly according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a heating assembly provided in accordance with a first embodiment of the present application;

FIG. 3 is a schematic diagram of an overall structure of a substrate according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of a heating assembly provided in accordance with a second embodiment of the present application;

FIG. 5 is a cross-sectional view of a heating assembly provided in accordance with a third embodiment of the present application;

FIG. 6 is a cross-sectional view of a heating assembly provided in accordance with a fourth embodiment of the present application;

FIG. 7 is a schematic plan view of a radiation layer, a resistance heating film layer and an electrode layer according to an embodiment of the present application;

FIG. 8 is a cross-sectional view of a heating assembly provided in accordance with a fifth embodiment of the present application;

FIG. 9 is a cross-sectional view of a heating assembly according to a sixth embodiment of the present application;

FIG. 10 is a cross-sectional view of a heating assembly according to a seventh embodiment of the present application;

FIG. 11 is a schematic structural diagram of an atomizer according to an embodiment of the present application;

figure 12 is a schematic structural view of an aerosol-generating device according to an embodiment of the present application;

figure 13 is a schematic structural view of an aerosol-generating device according to another embodiment of the present application.

Description of the reference numerals

A heating assembly 10; a substrate 1; an opening 11; a cavity 12; a radiation layer 2; an electrode layer 3; a conductive coil 4; a resistance heating layer 5; an atomizer 20; a housing 21; an intake hole 211; an air outlet channel 212; an aerosol-generating article 22; a power supply assembly 30.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. In the embodiment of the present application, all directional indicators (such as up, down, left, right, front, rear \8230;) are used only to explain the relative positional relationship between the components, the motion situation, etc. at a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1, fig. 1 is a schematic view of an overall structure of a heating element according to an embodiment of the present disclosure; FIG. 2 is a cross-sectional view of a heating assembly provided in accordance with a first embodiment of the present application; in the present embodiment, a heating assembly 10 is provided, the heating assembly 10 being adapted to heat and atomize an aerosol-generating article 22 (see fig. 11 below) when energized to form an aerosol. The heating assembly 10 can be used in various fields, such as medical, cosmetic, recreational smoking, and the like. Wherein the aerosol-generating article 22 is preferably a solid substrate and may comprise one or more of tobacco, herb leaves, tea leaves, mint leaves and other plant leaves, one or more of powder, granules, shreds of fragments, strips or flakes; alternatively, the solid matrix may contain additional volatile flavour compounds to be released when the matrix is heated. Of course, the aerosol-generating article 22 may also be a liquid or paste-like substrate, such as oils, liquid medicines, etc. to which the aroma component is added. The following examples all exemplify the use of a solid substrate for the aerosol-generating article 22.

As shown in fig. 2, the heating element 10 includes a substrate 1, a radiation layer 2, and an electrode layer 3.

Referring to fig. 3, fig. 3 is a schematic view of an overall structure of a substrate according to an embodiment of the present disclosure; the substrate 1 is a hollow cavity 12 with an opening 11 at one end, for example, the substrate 1 may be a hollow cylinder for receiving the aerosol-generating article 22 into the cavity 12 or removing the aerosol-generating article from the cavity 12 through the opening 11. Wherein the inner diameter of the cavity 12 is dimensioned to fit the outer diameter of the aerosol-generating article 22 that it is desired to receive, to reduce the gap between the aerosol-generating article 22 and the side wall of the cavity 12.

By using the substrate 1 for accommodating the aerosol-generating article 22 as the hollow substrate 12 with one open end 11, the amount of low-temperature fresh air flow passing through the aerosol-generating article 22 through the cavity 12 can be effectively reduced in the suction process compared with a hollow substrate with two open ends, so that the aerosol-generating article 22 can be in a negative-pressure low-oxygen state in the initial heating stage; under the negative pressure of oxygen-less suction, the materials in the aerosol-generating article 22 mainly undergo hydrogenation, reduction and cracking reactions, which effectively increases the types and contents of the aroma-forming substances formed by atomization, and overcomes the problem that the fresh air flow passes through the aerosol-generating article 22 and causes less aroma-forming substances due to sufficient oxidation. At the same time, the aerosol-generating article 22 can be maintained in a relatively stable pyrolysis temperature environment, overcoming the problem of unstable pyrolysis reactions caused by a rapid drop in temperature of the aerosol-generating article 22 as a result of fresh air flowing through the aerosol-generating article 22.

As shown in fig. 2, the radiation layer 2 is disposed in correspondence with a side wall of the substrate 1 for radiating infrared rays when heated to heat the aerosol-generating article 22 within the cavity 12; the utilization of the aerosol-generating article 22 and the uniformity of heating are effectively improved. Of course, in other embodiments, the radiation layer 2 may be further disposed corresponding to the bottom wall (i.e., the end wall of the end disposed opposite to the opening 11) of the base 1 to improve the heating efficiency of the heating assembly 10.

In a specific embodiment, the radiation layer 2 may be an infrared layer that radiates infrared rays when heated, and the infrared rays may penetrate through the inside of the aerosol-generating article 22 to heat the entire inside and outside of the aerosol-generating article 22 at the same time due to the strong heat radiation capability of the infrared rays, thereby reducing the difference between the inside and outside temperatures of the aerosol-generating article 22. The radiation layer 2 may be a far infrared ceramic layer, a metal layer or a conductive carbon layer, and may be selected according to the requirement.

In a particular embodiment, the radiation layer 2 is an infrared ceramic coating, and the radiation layer 2 radiates infrared light in operation to heat the aerosol-generating article 22. The infrared heating wavelength is 2.5 um-20 um, and the infrared emissivity is above 0.8 when the heating temperature is 200-300 ℃ aiming at the characteristic of heating the aerosol generating product 22. When the heating temperature reaches about 350 ℃, the energy radiation extreme value is mainly in a wave band of 3-5 um.

In one embodiment, with continued reference to fig. 2, the radiation layer 2 is specifically disposed on a side of the outer wall surface of the sidewall of the substrate 1, and infrared rays radiated by the radiation layer 2 pass through the substrate 1 and enter the cavity 12 to heat the aerosol-generating article 22 contained in the cavity 12. Specifically, the substrate 1 may be a transparent substrate; this enables more of the infrared radiation from the radiation layer 2 to pass through the substrate 1 to heat the aerosol-generating article 22 within the cavity 12, effectively increasing the efficiency of infrared utilization and heating of the aerosol-generating article 22.

In one embodiment, as shown in FIG. 2, the electrode layer 3 is electrically connected to the radiation layer 2, and when the electrode layer 3 is energized, the radiation layer 2 has current flowing through it, and the temperature of the radiation layer 2 increases to excite higher infrared radiation; since the transparent quartz substrate 1 is transparent to infrared radiation having a wavelength of less than 4 μm, infrared energy excited by the radiation layer 2 is transmitted through the substrate 1 to heat the aerosol-generating article 22 within the cavity 12; simultaneously the substrate 1 is heated by the radiation layer 2 to excite far infrared radiation to heat the aerosol-generating article 22 therein, whereby radiant heating and heat conduction heating of the aerosol-generating article 22 in the cavity 12 can be carried out, and the heating uniformity and utilization rate of the aerosol-generating article 22 can be improved.

As shown in fig. 2, the electrode layer 3 may be disposed on a surface of the radiation layer 2 facing away from the substrate 1 to be electrically connected to the radiation layer 2. Of course, when the radiation layer 2 does not cover both end edges of the substrate 1, as shown in fig. 4, fig. 4 is a cross-sectional view of the heating assembly provided in the second embodiment of the present application; the electrode layers 3 can also be arranged at the edges of the two ends of the substrate 1, are positioned on the outer wall surface of the side wall of the substrate 1 and are arranged on the same layer as the radiation layer 2, so that the electrode layers are electrically connected with the radiation layer 2; in this way, the spatial position of the surface of the substrate 1 can be fully utilized to reduce the spatial footprint of the entire heating assembly 10.

Specifically, the electrode layer 3 may be sintered on the radiation layer 2 or on the outer wall surface of the sidewall of the base 1 using a high thermal conductivity metal material.

In this embodiment, the material of the base 1 may be an insulating substrate. The substrate 1 may be made of a material having high temperature resistance and 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, and the like. Preferably, the substrate 1 is made of quartz glass.

The radiation layer 2 may be formed on the entire outer wall surface of the sidewall of the substrate 1 by screen printing, coating, sputtering, printing or tape casting, etc., to ensure that the aerosol-generating article 22 located in the cavity 12 can be heated. Wherein, the shape, area and thickness of the radiation layer 2 can be set according to actual needs; the shape, area and thickness of the radiation layer 2 are set, for example, according to a predetermined scheme of the temperature field of the heating element 10. For example, the shape of the radiation layer 2 may be a continuous film, a porous mesh, a stripe, or the like, and specifically, the film surface may be made to generate heat. It will be appreciated that in order to make the heating effect of the radiation layer 2 more uniform, its thickness is generally uniform throughout the substrate 1; of course, for special requirements, the thickness of the radiation layer 2 can be set to be different at different positions on the substrate 1, so that the infrared energy density of different regions of the heating assembly 10 is different, i.e. the heat density of different regions is different when the heating assembly 10 is powered on to form different temperature fields.

Specifically, the radiation layer 2 may be made of a conductive or semiconductive material that generates heat by conduction. For example, the material of the radiation layer 2 is ABO with metal property ₃ A perovskite-type material. Wherein 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.

Of course, in other embodiments, the material of the base 1 may also be a conductive metal substrate, such as a stainless steel substrate or a metal aluminum substrate, etc. In order to prevent short-circuiting between the substrate 1 and the radiation layer 2; the heating assembly 10 further comprises an insulating layer disposed between the radiation layer 2 and the resistive heating layer 5. The insulating layer may be formed on the outer wall surface of the sidewall of the substrate 1 by screen printing, coating, sputtering, printing, tape casting, or the like. The insulating layer can be made of high temperature resistant insulating materials such as ceramic, quartz glass, mica, etc.

In another embodiment, referring to FIG. 5, FIG. 5 is a cross-sectional view of a heating assembly provided in a third embodiment of the present application; the difference from the heating assembly 10 provided in the embodiment corresponding to fig. 2 is that: heating element 10 further comprises an electrically conductive coil 4, and electrode layer 3 is electrically connected, in particular, to electrically conductive coil 4, for energizing electrically conductive coil 4. The radiation layer 2 comprises an infrared material and a ferromagnetic material doped in the infrared material. Wherein the infrared material may be one or more of perovskite, spinel, olivine and carbide. The ferromagnetic material may be one or more of an iron-based, cobalt-based or nickel-based metal or alloy, and a ferrite.

In this particular embodiment, a conductive coil 4 is disposed around the periphery of the radiating layer 2 for generating a varying magnetic field upon energization. The ferromagnetic material of the radiation layer 2 is heated by forming eddy currents in the changing magnetic field.

Specifically, the conductive coil 4 may be made of a conductive metal material, such as copper, aluminum, silver, etc., and in this embodiment, the conductive coil 4 is preferably a metal coil made of copper. The conductive coil 4 can be an enameled wire or a litz wire and is wound on one side of the radiation layer 2, which is far away from the substrate 1; it will be appreciated that in this embodiment, the varnish on the outside of the wires is an insulating material to prevent shorting problems between the coils.

In yet another embodiment, referring to FIG. 6, FIG. 6 is a cross-sectional view of a heating assembly provided in a fourth embodiment of the present application; the difference from the heating assembly 10 provided in the embodiment corresponding to fig. 2 is that: the heating assembly 10 further comprises: and the resistance heating layer 5 is arranged on the surface of one side, which is far away from the base body 1, of the radiation layer 2. Electrode layer 3 specifically is connected with resistance heating layer 5 electricity, and after electrode layer 3 circular telegram, electric current flows through resistance heating layer 5, makes resistance heating layer 5 produce heat to heating radiation layer 2, thereby make radiation layer 2 heated and radiate the infrared ray. Specifically, the electrode layer 3 may be disposed on a side surface of the resistance heating layer 5 away from the radiation layer 2 or disposed on the same layer as the resistance heating layer 5, and the present embodiment does not limit the disposing manner of the electrode layer 3, as long as the electrode layer is electrically connected to the resistance heating layer 5.

The resistance heating layer 5 may be a surface heating type, such as a continuous cylindrical surface. Of course, the resistance heating layer 5 can be any pattern satisfying the heating effect, for example, referring to fig. 7, fig. 7 is a schematic plan view of the radiation layer, the resistance heating film layer and the electrode layer provided in an embodiment of the present application; the resistance heating layer 5 may also be W-type, or M-type, or spiral-type, etc.

The resistance heating layer 5 can be made of a mixture of metal Ag and glass, or a material with positive temperature coefficient characteristics of resistance, such as silver-palladium alloy and the like; or other types of resistive electrocaloric materials with negative temperature coefficient characteristics of resistance.

In this embodiment, the material of the radiation layer 2 may be a conductive or insulating high infrared emissivity material; such as: at least one of high infrared emissivity materials such as perovskite system, spinel system, carbide, silicide, nitride, oxide and rare earth material. When the radiation layer 2 is made of a conductive material, an insulating layer may be further disposed between the radiation layer 2 and the resistance heating layer 5 to prevent a short circuit. The insulating layer is made of a material and provided in a manner similar to that of the insulating layer described above.

In another embodiment, referring to fig. 8, fig. 8 is a cross-sectional view of a heating assembly provided in a fifth embodiment of the present application; the difference from the heating assembly 10 provided in the above embodiments corresponding to fig. 2 to 7 is that: the radiation layer 2 is arranged on one side of the inner wall surface of the side wall of the substrate 1; compared with the solution in which the radiation layer 2 is arranged on the side of the side wall of the base 1 where the outer wall surface is located, the infrared rays radiated by the radiation layer 2 can directly heat the aerosol-generating article 22 without passing through the base 1, further improving the utilization rate of the infrared rays.

Wherein, in one embodiment, as shown in fig. 8, the electrode layer 3 can also be electrically connected to the radiation layer 2, so that after the electrode layer 3 is energized, an electric current flows through the radiation layer 2, causing the temperature of the radiation layer 2 to rise, exciting higher infrared radiation; reference may be made specifically to the above description of the embodiment corresponding to fig. 2. As shown in fig. 8, the electrode layer 3 in this embodiment may also be disposed on the inner wall surface of the sidewall of the substrate 1 and on the same layer as the radiation layer 2. Of course, the electrode layer 3 can also be arranged on the surface of the substrate 1 facing away from the radiation layer 2, or on the surface of the radiation layer 2 facing away from the substrate 1.

The base 1 may be an insulating substrate, and the radiation layer 2 is specifically disposed on an inner wall surface of a sidewall of the base 1, which can be referred to in the above related text. Of course, the base 1 may be a conductive metal base material, and in this case, an insulating layer may be provided between the radiation layer 2 and the base 1 in order to prevent a short circuit between the radiation layer 2 and the base 1.

In another embodiment, referring to fig. 9, fig. 9 is a cross-sectional view of a heating assembly provided in a sixth embodiment of the present application; the difference from the heating assembly 10 provided in the embodiment corresponding to fig. 8 is that: the substrate 1 further comprises an electrically conductive coil 4, the electrode layer 3 being in particular electrically connected to the electrically conductive coil 4 for energizing the electrically conductive coil 4. In this particular embodiment, the base 1 is made of a material capable of generating heat by inducing eddy currents in a varying magnetic field; the matrix 1 may in particular be a metal substrate, such as one or more of an iron-based, cobalt-based or nickel-based metal or alloy, and a ferrite.

In this particular embodiment, a conductive coil 4 is disposed around the periphery of the substrate 1 for generating a varying magnetic field when energized. The substrate 1 induces a magnetic field change in a high frequency varying magnetic field generated by the electrically conductive coil 4 to generate eddy currents and generate heat, thereby converting electrical energy into heat, which is then transferred to the radiation layer 2 by thermal conduction, causing the radiation layer 2 to heat up and be excited, thereby radiatively heating infrared rays to heat the aerosol-generating article 22.

Specifically, the radiation layer 2 can also be made of a material which can induce a variable magnetic field to generate eddy current and generate heat, so that the radiation layer 2 can also induce the magnetic field to change in the high-frequency variable magnetic field generated by the conductive coil 4 to generate eddy current and heat; thereby improving the overall heating efficiency of the heating assembly 10. In this embodiment, an insulating layer is provided between the radiation layer 2 and the base 1.

In yet another embodiment, referring to FIG. 10, FIG. 10 is a cross-sectional view of a heating assembly provided in a seventh embodiment of the present application; the difference from the heating assembly 10 provided in the embodiment corresponding to fig. 8 is that: the heating assembly 10 further comprises: and the resistance heating layer 5 is arranged on one side of the base body 1, which is far away from the radiation layer 2. Electrode layer 3 specifically is connected with resistance heating layer 5 electricity, and electrode layer 3 circular telegram back, and the electric current flows through resistance heating layer 5, makes resistance heating layer 5 produce heat to heating base member 1, base member 1 is conducted the heat to radiation layer 2 through heat-conduction, thereby makes radiation layer 2 heated and radiate the infrared ray. Wherein, the electrode layer 3 can be arranged on one side surface of the resistance heating layer 5 departing from the radiation layer 2 or arranged on the same layer with the resistance heating layer 5. See in particular the above-mentioned way of arranging the electrode layer 3.

When the base body 1 is an insulating base material, the resistance heating layer 5 may be disposed on a side surface of the base body 1 away from the radiation layer 2. When the base 1 is a conductive metal base material, an insulating layer is provided between the resistance heating layer 5 and the base 1 to prevent a short circuit. The material and the specific arrangement of the insulating layer can be referred to the above description.

In the heating assembly 10 provided by the present embodiment, the substrate 1 for accommodating the aerosol-generating article 22 is a hollow cavity 12 with an opening 11 at one end, so that the amount of low-temperature fresh air flow flowing through the aerosol-generating article 22 through the cavity 12 can be effectively reduced in the suction process, and the aerosol-generating article 22 can be in a negative-pressure low-oxygen state at the initial heating stage; under the negative pressure suction condition of low oxygen, the materials in the aerosol generating product 22 mainly undergo hydrogenation, reduction and cracking reactions, so that the types and the contents of aroma substances formed by atomization are effectively increased, and the problem that the aroma substances are less due to full oxidation when fresh air flows through the aerosol generating product 22 is solved. At the same time, the aerosol-generating article 22 can be maintained in a relatively stable pyrolysis temperature environment, overcoming the problem of unstable pyrolysis reactions caused by a rapid drop in temperature of the aerosol-generating article 22 as a result of fresh air flowing through the aerosol-generating article 22. In addition, by providing the radiation layer 2 on the side wall of the base 1 to radiate infrared rays when heated, the aerosol-generating article 22 in the cavity 12 is heated, and the utilization rate of the aerosol-generating article 22 and the uniformity of heating are effectively improved.

Referring to fig. 11, fig. 11 is a schematic structural diagram of an atomizer according to an embodiment of the present application. In the present embodiment, there is provided a nebulizer 20, the nebulizer 20 comprising a heating assembly 10, a housing 21 and an aerosol-generating article 22. The heating element 10 provided in any of the above embodiments is the heating element 10, and the specific structure and function thereof can be referred to the above description, which is not repeated herein.

Part of the housing 21 is detachably connected to the cavity 12 of the heating module 10, and the rest extends out of the heating module 10. In the embodiment, the housing 21 has a receiving cavity, an air outlet channel 212 and at least one air inlet hole 211. A housing cavity is formed in a portion of the housing 21 located inside the heating element 10, and the aerosol-generating product 22 is housed in the housing cavity. The air outlet passage 212 communicates the housing chamber with each of the air inlet holes 211. The number of the intake holes 211 may be two, three, four or more. Each air inlet hole 211 is respectively communicated with the containing cavity and the outside air, and each air inlet hole 211 is opened on the part of the shell 21 extending out of the heating assembly 10 and is close to the opening 11 of the heating assembly 10. During suction, the air flow flows in from the air inlet holes 211, carries away the aerosol formed by the atomization of the heating assembly 10 through the opening 11 of the base body 1, and flows out from the air outlet channel 212.

In the atomizer 20 provided by this embodiment, the base 1 is a hollow cavity 12 with an opening 11 at one end, and the air inlet 211 communicated with the accommodating cavity is disposed outside the base 1 and located at a position of the housing 21 close to the opening 11 of the base 1, so that aerosol generated by atomization of the heating assembly 10 can be taken away in a suction process, and the amount of low-temperature fresh air flow passing through the aerosol-generating product 22 can be effectively reduced, so that the aerosol-generating product 22 can be in a negative-pressure oxygen-reduced state at an initial heating stage; under the negative pressure suction condition of low oxygen, the materials in the aerosol generating product 22 mainly undergo hydrogenation, reduction and cracking reactions, so that the types and the contents of aroma substances formed by atomization are effectively increased, and the problem that the aroma substances are less due to full oxidation when fresh air flows through the aerosol generating product 22 is solved. At the same time, the aerosol-generating article 22 can be maintained in a relatively stable pyrolysis temperature environment, overcoming the problem of unstable pyrolysis reactions caused by a rapid drop in temperature of the aerosol-generating article 22 as a result of fresh air flowing through the aerosol-generating article 22.

Referring to fig. 12, fig. 12 is a schematic diagram of an aerosol-generating device according to an embodiment of the present application. In the present embodiment, an aerosol-generating device is provided comprising a heating assembly 10 and a power supply assembly 30.

Wherein the heating assembly 10 is adapted to heat and atomize the aerosol-generating article 22 upon energization for inhalation by a user. The specific structure and function of the heating element 10 can be referred to in the description of the heating element 10 provided in the above embodiments, and the same or similar technical effects can be achieved, and are not described herein again.

The power supply assembly 30 is electrically connected to the heating assembly 10 for supplying power to the heating assembly 10 to ensure proper operation of the aerosol generating device. The power supply unit 30 may be a dry battery, a lithium battery, or the like.

Referring to fig. 13, fig. 13 is a schematic diagram of an aerosol-generating device according to another embodiment of the present application. In this embodiment, another aerosol-generating device is provided, comprising a nebulizer 20 and a power supply assembly 30.

Wherein the atomizer 20 is adapted to heat and atomize an aerosol-generating article 22 upon energization for inhalation by a user. The specific structure and function of the atomizer 20 can be referred to the related description of the atomizer 20 provided in the above embodiments, and can achieve the same or similar technical effects, and are not repeated herein.

The power supply assembly 30 is electrically connected to the atomizer 20 for supplying power to the atomizer 20 to ensure proper operation of the aerosol generating device. The power supply unit 30 may be a dry battery, a lithium battery, or the like.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims

1. A heating assembly, comprising:

a base being a hollow cavity open at one end for receiving an aerosol-generating article into or out of the cavity through the opening;

a radiation layer disposed at least in correspondence with a sidewall of the substrate for radiating infrared radiation when heated to heat the aerosol-generating article within the cavity.

2. The heating assembly of claim 1, further comprising a resistive heating layer disposed on a side of the sidewall of the base where the outer wall surface is located for generating heat to heat the radiation layer when energized.

3. The heating assembly of claim 2, wherein the radiation layer is disposed on a side of the sidewall of the base where the outer wall surface is located, and the resistance heating layer is disposed on a side of the radiation layer facing away from the base; or the like, or a combination thereof,

4. A heating element as claimed in claim 2 or 3, characterized in that the substrate is a transparent substrate.

5. A heating assembly as claimed in claim 1, in which the radiating layer is provided on the side of the substrate on which the outer wall surface of the side wall is provided, for generating heat when energised to heat the aerosol-generating article within the cavity.

6. The heating assembly of claim 5, wherein the base is an insulating substrate; the radiation layer is arranged on the outer wall surface of the side wall of the base body.

7. The heating assembly of claim 5, wherein the base is an electrically conductive metal substrate;

the heating assembly further comprises an insulating layer, and the insulating layer is arranged between the radiation layer and the base body.

8. A heating element as claimed in any one of claims 5 to 7, characterized in that the radiation layer is arranged to correspond to the entire outer wall surface of the side wall of the base body.

9. A heating assembly as claimed in any of claims 5 to 7, further comprising an electrode layer electrically connected to the radiating layer for energising the radiating layer;

the electrode layer is arranged on the surface of one side, away from the base body, of the radiation layer; or the electrode layer and the radiation layer are arranged on the same layer.

10. The heating assembly of claim 1, further comprising an electrically conductive coil disposed around a periphery of the radiant layer for generating a varying magnetic field when energized;

the radiation layer is arranged on one side where the outer wall surface of the side wall of the base body is located, and eddy current is formed in the variable magnetic field by the radiation layer to be heated.

11. The heating assembly of claim 1, further comprising an electrically conductive coil disposed around a periphery of the substrate for generating a changing magnetic field when energized;

the radiation layer is arranged on one side of the inner wall surface of the side wall of the substrate, and the substrate forms eddy current in the variable magnetic field and generates heat to heat the radiation layer.

12. The heating assembly of claim 1, wherein the radiation layer is an infrared layer.

13. An atomizer, comprising:

a heating assembly as claimed in any one of claims 1 to 12;

the shell is provided with an accommodating cavity and at least one air inlet hole which is communicated with the accommodating cavity and the outside air;

an aerosol-generating article housed within the housing chamber;

wherein part of the shell is detachably connected to the cavity of the heating assembly; the at least one air inlet is arranged on the part of the shell extending out of the heating assembly.

14. An aerosol-generating device, comprising:

one of a heating assembly and an atomizer; wherein the heating assembly is as claimed in any one of claims 1-12; the atomizer is the atomizer of claim 13;

and the power supply assembly is electrically connected with the heating assembly or the atomizer and is used for supplying power to the heating assembly or the atomizer.