Heating assembly and aerosol-generating device comprising the same

Abstract

The application relates to a heating assembly and an aerosol generating device comprising the same, comprising: a tubular base body having a proximal end and a distal end arranged oppositely, the proximal end of the tubular base body providing an entrance for insertion of an aerosol generating article; the tubular base body comprising a first portion and a second portion distributed along a longitudinal direction, the first portion being closer to the proximal end of the tubular base body than the second portion, and the first portion having an annular first heating zone thereon, and the second portion having a second heating zone and a third heating zone distributed along a circumferential direction and spaced from each other thereon, the heating zones being configured to provide energy to heat the aerosol generating article.

Description

Technical Field

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

[0002] An aerosol generating device is a device that heats an aerosol generating product to produce aerosols without combustion. One existing aerosol generating device includes a heating tube comprising an upper heating zone and a lower heating zone. The lower heating zone is positioned near the lower end of the heating tube. The upper and lower heating zones are used to heat different heights of the aerosol generating product. The total resistance of the lower heating zone is lower than that of the upper heating zone, resulting in a slower heating rate in the lower heating zone. However, the lower heating zone operates for at least 2 minutes. As the operating time of the lower heating zone increases, heat gradually accumulates in the portion of the aerosol generating product corresponding to the lower heating zone, causing the maximum temperature in that portion to exceed 250°C. This temperature can not only decompose or melt the filter element in the aerosol generating product, thus limiting the heating tube's use to aerosol generating products without a bottom filter element, but also prevents its use with aerosol generating products that have a bottom filter element. Furthermore, prolonged exposure to this temperature can cause the matrix in the aerosol generating product to burn or produce an odor. Utility Model Content

[0003] The purpose of this application is to provide a heating component and an aerosol generating apparatus including the heating component, which can reduce the maximum temperature at the distal end of a tubular substrate.

[0004] At least one embodiment of this application provides a heating assembly, the heating assembly comprising:

[0005] A tubular substrate having a proximal end and a distal end disposed opposite to each other, wherein the proximal end of the tubular substrate provides an inlet for insertion of an aerosol-generating article;

[0006] The tubular matrix includes a first portion and a second portion distributed longitudinally. The first portion is closer to the proximal end of the tubular matrix than the second portion and has an annular first heating zone. The second portion has a second heating zone and a third heating zone distributed circumferentially and spaced apart from each other. The heating zones are configured to provide energy or allow energy to pass through to heat the aerosol-generated article.

[0007] As an example, it also includes a plurality of electrodes disposed on the tubular substrate, the plurality of electrodes being used to guide the direction of current flow;

[0008] The current corresponding to the first heating zone flows longitudinally, while the current corresponding to the second and third heating zones flows circumferentially.

[0009] As an example, the current corresponding to the second heating zone and the current corresponding to the third heating zone are in opposite directions.

[0010] As an example, the electrode includes a first annular electrode, a second annular electrode, a first electrode, and a second electrode. The first annular electrode is located between the first portion and the proximal end of the tubular substrate and is disposed around the tubular substrate. The second annular electrode is located between the first portion and the second portion and is disposed around the tubular substrate. The first heating zone is located between the first annular electrode and the first annular electrode.

[0011] The first electrode and the second electrode are located in the second portion, and the first electrode and the second electrode cause the second heating zone and the third heating zone to be spaced apart in the circumferential direction.

[0012] As an example, the first electrode is connected to the second annular electrode, and the second electrode is spaced apart from the second annular electrode.

[0013] As an example, the electrode further includes a third annular electrode located between the second portion and the distal end of the tubular substrate and disposed around the tubular substrate;

[0014] The first electrode and the third annular electrode are spaced apart, and the second electrode is connected to the third annular electrode.

[0015] As an example, it also includes a heating element and one or more empty electrodes spaced apart from other electrodes;

[0016] The heating element is at least partially disposed corresponding to the second heating zone and is electrically connected to the first electrode and the empty electrode adjacent to the first electrode; or

[0017] The heating element is at least partially disposed corresponding to the third heating zone and is electrically connected to the second electrode and the empty electrode adjacent to the second electrode; or

[0018] The heating element is located at least partially between two adjacent empty electrodes and is electrically connected to the two empty electrodes.

[0019] As an example, the heating assembly further includes a first heating element and a second heating element, the first heating element being disposed around the periphery of the first portion and corresponding to the first heating area, and the opposite ends of the first heating element in the longitudinal direction being electrically connected to the first annular electrode and the second annular electrode, respectively.

[0020] The second heating element is arranged around the periphery of the second part and is simultaneously arranged corresponding to the second heating area and the third heating area, and the first electrode and the second electrode overlap with different parts of the second heating element.

[0021] As an example, the first electrode and the second electrode extend longitudinally.

[0022] As an example, the longitudinal length of the first heating zone is greater than the longitudinal length of the second heating zone; or

[0023] The longitudinal length of the first heating zone is greater than the longitudinal length of the second heating zone in a ratio of 3:2, 2:1, or 7:3.

[0024] At least one embodiment of this application provides an aerosol generating apparatus, which includes the aforementioned heating component, as well as a controller and a power supply component. The controller is used to control the power supply component to provide electrical power to the heating component, so that the heating zone provides energy to heat the aerosol-generated article.

[0025] As an example, the controller is configured to control the power supply component to provide electrical power to the heating component in a first phase and a second phase, wherein in the first phase, the first component operates primarily, and in the second phase, the second component operates at least primarily.

[0026] As an example, the controller is configured to control the power supply component to provide a first power to the heating component in a first phase and a second power to the heating component in a second phase, wherein the first power is greater than or equal to 20W and / or the second power is less than or equal to 10W.

[0027] As an example, the heating assembly is configured to operate alternately by the first part and the second part in the second phase.

[0028] As an example, in the second phase, the duration of each work session in the first part is longer than the duration of each work session in the second part; or

[0029] In the second phase, the duration of each working session in the second part is less than the duration of each shutdown in the second part.

[0030] As an example, in the second stage, the average temperature of the first part is lower than the average temperature of the second part.

[0031] The heating assembly and aerosol generating apparatus including the heating assembly provided in the above embodiments include a tubular substrate with an inlet at the proximal end for inserting an aerosol generating article. The tubular substrate is longitudinally divided into multiple regions including a first part and a second part. The first part is closer to the proximal end of the tubular substrate than the second part and has an annular first heating zone, allowing the portion of the aerosol generating article corresponding to the first heating zone to be uniformly heated. The second part has circumferentially distributed and spaced-apart second and third heating zones, allowing the non-heated area between the second and third heating zones to absorb some of the heat from the second and third heating zones during operation, thereby reducing the maximum temperature of the second part and helping to control the maximum temperature of the second part below 250°C. Therefore, the heating assembly can be used not only with aerosol generating articles with a bottom filter element but also with aerosol generating articles without a bottom filter element, and can prevent the aerosol generating article from being overheated and producing odors. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar parts or portions are generally identified by similar reference numerals. In the drawings, the parts or portions are not necessarily drawn to scale.

[0033] Figure 1 This is a schematic diagram of an aerosol generating apparatus provided in some embodiments of this application;

[0034] Figure 2 This is a schematic diagram of a heating assembly provided in some embodiments of this application;

[0035] Figure 3 This is an exploded view of the heating assembly provided in some embodiments of this application;

[0036] Figure 4 This is an unfolded schematic diagram of a heating assembly provided in some embodiments of this application;

[0037] Figure 5 This is a schematic diagram of a heating assembly provided in other embodiments of this application;

[0038] Figure 6 This is an exploded view of the heating assembly provided in some other embodiments of this application;

[0039] Figure 7 This is an unfolded schematic diagram of the heating assembly provided in other embodiments of this application;

[0040] Figure 8This is a schematic diagram of the temperature curves of the first part and the second part in the first and second stages provided in some embodiments of this application. In the figure, the vertical axis represents temperature T, the horizontal axis represents time t, curve T1 represents the temperature-time curve of the first part, and curve T2 represents the temperature-time curve of the second part.

[0041] In the picture:

[0042] 100. Aerosol generating device;

[0043] 1. Aerosol generating products; 11. Aerosol generating matrix; 12. Bottom filter element;

[0044] 2. Heating assembly; 21. Tubular substrate; 211. First part; 2111. First heating zone; 212. Second part; 2121. Second heating zone; 2122. Third heating zone; 2123. Non-heating zone; 221. First annular electrode; 222. Second annular electrode; 223. First electrode; 224. Second electrode; 225. Third annular electrode; 226. Empty electrode; 23. First heating element; 24. Second heating element;

[0045] 3. Power supply components; 4. Controller; t1, first stage; t2, second stage. Detailed Implementation

[0046] 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.

[0047] The terms "first," "second," and "third" used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number or order of the indicated technical features. 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 relationship or movement of the components in a specific orientation (as shown in the accompanying drawings). If the specific orientation changes, the directional indication will 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.

[0048] 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.

[0049] It should be noted that when a part is referred to as being "fixed to" another part, it can be directly on the other part or there may be an intermediate part. When a part is referred to as being "connected to" another part, it can be directly connected to the other part, or there may be one or more intermediate parts present simultaneously. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] Please refer to Figure 1 This application provides an aerosol generating apparatus 100, which can receive an aerosol generating article 1 and generate aerosol from the aerosol generating article 1.

[0051] As used herein, the term "aerosol-generating article" refers to an article comprising an aerosol-forming matrix 11 that, when heated, releases volatile compounds that can form aerosols. "Aerosol-generating article" also refers to an article comprising an aerosol-forming matrix 11 intended to be heated rather than burned to release volatile compounds that can form aerosols. Aerosols formed by heating an aerosol-forming matrix may contain fewer known hazardous components than aerosols generated by combustion or pyrolytic degradation of the aerosol-forming matrix. In one embodiment, the aerosol-generating article 1 is removably coupled to the aerosol-generating apparatus 100. The article may be disposable or reusable.

[0052] As used herein, the term "aerosol-forming matrix" refers to a matrix capable of releasing volatile substances to form an inhalable aerosol. The aerosol-forming matrix may include tobacco-containing material containing volatile tobacco flavor compounds that are released from the matrix upon heating. Specifically, the aerosol-forming matrix may be a tobacco-containing aerosol-forming matrix, preferably a solid tobacco-containing aerosol-forming matrix. Alternatively, the aerosol-forming matrix may include non-tobacco materials. The aerosol-forming matrix may also include an aerosol-forming agent. Examples of suitable aerosol-forming agents are glycerol and propylene glycol.

[0053] The aerosol forming matrix 11 may include one or more of the following: powder, granules, pellets, flakes, strips, bands, or sheets, containing one or more of the following: herbaceous plant leaves, tobacco leaves, tobacco vein fragments, reconstituted tobacco, homogenized tobacco, extruded tobacco, and expanded tobacco.

[0054] When the aerosol forming matrix 11 is a solid aerosol forming matrix, the aerosol-generated product 1 can be a cigarette, a cigarette stick, or a cigar, etc.

[0055] The aerosol-forming matrix 11 may include a liquid matrix. The liquid matrix may contain a liquid containing tobacco-containing substances with volatile tobacco flavor components, or it may contain a liquid containing non-tobacco substances. The liquid matrix may contain water, solvents, ethanol, plant extracts, fragrances, flavorings, or vitamin mixtures, etc. Fragrances may include areca nut extract, menthol, peppermint, spearmint oil, various fruit flavor components, etc., but are not limited to these. Flavorings may contain ingredients that can provide the user with various fragrances or flavors. Vitamin mixtures may be mixtures containing at least one of vitamin A, vitamin B, vitamin C, and vitamin E, but are not limited to these. When the aerosol-forming matrix is ​​a liquid matrix, the aerosol-generating product may be a cartridge or an atomizer, etc.

[0056] In some embodiments, the aerosol generating article 1 includes a packaging layer disposed around the aerosol forming matrix 11. The packaging layer may be formed of any suitable material or combination of materials. For example, the packaging layer may include conventional cigarette paper.

[0057] In some embodiments, the aerosol generating article 1 includes a top filter element disposed downstream of the aerosol generating matrix 11 along the airflow direction. The top filter element is located near the proximal end of the aerosol generating article 1 and can be formed of one or more suitable filter materials, such as cellulose acetate or cellulose acetate filaments. The thermal decomposition temperature of the top filter element is 250°C-300°C. Therefore, in use, the top filter element is typically spaced apart from the heating assembly 2.

[0058] In some embodiments, the aerosol generating article 1 includes a distal bottom filter element 12 disposed thereon, located upstream of the aerosol generating matrix 11 along the airflow direction. The bottom filter element 12 may be formed of one or more suitable filter materials. The bottom filter element 12 may be made of the same material as the top filter element or a different material. The bottom filter element 12 serves to support the aerosol generating matrix 11, allowing it to remain within the packaging layer without falling off. The bottom filter element 11 can adsorb oil permeating from the aerosol generating matrix 11. The decomposition temperature of the bottom filter element 12 is typically above 250°C, meaning it will melt if exposed to temperatures above 250°C for an extended period. The longitudinal height of the bottom filter element 12 is typically less than or equal to 5 mm.

[0059] As used herein, the term "aerosol generating apparatus" is an apparatus that engages or interacts with an aerosol generating article 1 to form an inhalable aerosol. The apparatus interacts with the aerosol forming matrix 11 to generate an aerosol. An electrically operated aerosol generating apparatus is an apparatus that includes one or more components for supplying energy from, for example, a power supply component 3 to heat the aerosol forming matrix 11 to generate an aerosol.

[0060] The aerosol generating apparatus 100 can be described as a heated aerosol generating apparatus, which includes a heating component 2. The heating component 2 is used to directly or indirectly heat the aerosol generating article 1 to generate an aerosol.

[0061] In some embodiments, reference may be made to Figures 2-5 The heating assembly 2 includes a tubular base 21 having a proximal end and a distal end disposed opposite to each other. The proximal end of the tubular base 21 provides an inlet for insertion of the aerosol generating article 1, thereby the heating assembly 2 can heat the aerosol generating article 1 around the periphery of the aerosol generating article 1.

[0062] The tubular substrate 21 may include a longitudinally extending tubular structure. The aerosol generating article 1 may be a longitudinally extending rod-shaped structure, and at least a portion of the aerosol generating article 1 may be inserted into the tubular structure through the proximal end of the tubular substrate 21 and surrounded by the tubular substrate 21. The central axis of the aerosol generating article 1 may coincide with the central axis of the tubular substrate 21. The shape enclosed by the inner surface of the tubular substrate 21 may be consistent with the surface shape of the aerosol generating article 1; for example, the shape enclosed by the inner surface of the tubular substrate 21 may be circular, elliptical, or other closed shapes.

[0063] The tubular matrix 21 includes a first portion 211 and a second portion 212 distributed longitudinally. Both the first portion 211 and the second portion 212 are local parts of the tubular matrix 21, and there may be a clear boundary or a blurred boundary between them. Preferably, both the first portion 211 and the second portion 212 are tubular or annular, and they share a central axis.

[0064] In some embodiments, reference may be made to Figure 2 The first portion 211 is closer to the proximal end of the tubular substrate than the second portion 212, and has an annular first heating zone 2111. The second portion 212 has a second heating zone 2121 and a third heating zone 2122 distributed circumferentially and spaced apart from each other. The heating zones are configured to provide energy to heat the aerosol-generating article 1. Thus, the first heating zone 2111 can circumferentially heat the aerosol-generating article 1; preferably, the first heating zone 2111 can heat the aerosol-generating article 1 360° circumferentially, so that the first heating zone 2111 can provide relatively uniform energy in the circumferential direction to heat the corresponding parts of the aerosol-generating article 1. The second heating zone and the third heating zone 2122 can be staggered in the circumferential direction to heat the local portions of the aerosol-generating article 1 corresponding to the second portion 212.

[0065] It should be noted that the heating zone can provide energy in at least one of the following situations: (1) The tubular substrate 21 corresponding to the heating zone is configured to generate heat by self-heating. For example, the tubular substrate corresponding to the heating zone can generate eddy currents and / or hysteresis in a changing magnetic field to generate heat, or the tubular substrate 21 is made of a conductor with appropriate resistance, such as conductive ceramic, so that it can generate heat by self-heating when electrical power is applied. (2) The tubular substrate 21 corresponding to the heating zone can absorb heat from the heating element to have a higher temperature, thereby heating the aerosol generating article 1 in the corresponding part. For example, a heating element is provided in or on the surface of the tubular substrate 21. The heating element may include a resistance heating element or an electromagnetic heating element that can generate heat in a changing magnetic field. (3) The tubular substrate 21 corresponding to the heating zone can transmit light or emit light, so that the light can irradiate the aerosol generating article 1, thereby using the light to heat the aerosol generating article 1. The light may include laser light or infrared light, etc.

[0066] It is understood that the circumferential spacing between the second heating zone 2121 and the third heating zone 2122 means that there is at least one non-heated zone 2123 between the second heating zone 2121 and the third heating zone 2122. When the second part 212 is working, the heating rate of the non-heated zone 2123 is lower than that of the heating zone, so the tubular substrate 21 corresponding to the non-heated zone 2123 absorbs heat from the tubular substrate 21 corresponding to the heating zone. In other words, the non-heated zone 2123 on the second part 212 can absorb part of the heat from the heating zone on the second part 212, thereby reducing the maximum temperature of the second part 212. This helps to control the maximum temperature of the second part 212 below 250°C, without reducing the area of ​​the second part 212 or increasing the distance between the second part 212 and the distal end of the tubular substrate 21. This allows the heating assembly 2 to be used with an aerosol generating article 1 having a bottom filter element 12, and the bottom filter element 12 can be disposed in the tubular substrate 21 corresponding to the second part 212. When the aerosol generating product 1 with the bottomless filter element 12 is used, a portion of the aerosol generating matrix 11 in the aerosol generating product 1 is provided corresponding to the second part 212. The second part 212 can prevent heat from accumulating in the corresponding aerosol generating matrix 11, thereby preventing the aerosol generating product 1 from being overheated and producing odors.

[0067] In some embodiments, the aerosol generating apparatus 100 further includes a controller 4, which can control the output of the power supply component 3, for example, causing the power supply component 3 to output alternating current or direct current, or for example, causing the power supply component 3 to output current or voltage in the form of pulses; or for example, the controller 4 can control the power supply component 3 to provide electrical power to the heating component 2 so that the heating zone provides energy to heat the aerosol generating article 1.

[0068] The controller 4 controls the overall operation of the aerosol generating device 100. Specifically, the controller 4 controls not only the operation of the power supply assembly and the heating assembly 2, but also the operation of other components in the aerosol generating device 100. Furthermore, the controller 4 can determine whether the aerosol generating device 100 is operable by checking the status of its components. The controller 4 includes at least one processor. The processor may include a logic gate array, or may include a combination of a general-purpose microprocessor and a memory storing a program executable in the microprocessor. Moreover, those skilled in the art will understand that the controller 4 may include another type of hardware.

[0069] In some embodiments, reference may be made to Figure 8 The controller 4 is configured to control the power supply component 3 to provide electrical power to the heating component 2 in the first stage t1 and the second stage t2.

[0070] In the first stage t1, the first part 211 mainly operates, resulting in a higher temperature at the portion of the aerosol-generating article 1 corresponding to the first part 211 than at the portion corresponding to the second part 212. Alternatively, in the first stage t1, the electrical power supplied by the power supply assembly 3 to the heating assembly 2 is mainly distributed to the first heating zone 2111 of the tubular substrate 21, or mainly distributed to the heating element corresponding to the first heating zone 2111. Preferably, in the first stage t1, the proportion of aerosol generated by the portion of the aerosol-generating article 1 corresponding to the first part 211 is greater than 70%.

[0071] In the second stage t2, at least primarily the second part 212 operates, such that the temperature of the portion of the aerosol generating article 1 corresponding to the second part 212 in the first stage t1 is lower than the temperature of the portion of the aerosol generating article 1 corresponding to the second part 212 in the second stage t2. Alternatively, the proportion of aerosol generated by the portion of the aerosol generating article 1 corresponding to the first part 211 in the second stage t2 is less than the proportion of aerosol generated by the portion of the aerosol generating article 1 corresponding to the first part 211 in the first stage t1. Alternatively, the proportion of electrical power supplied by the power supply component 3 to the heating component 2 in the second stage t2 that is allocated to the first heating zone 2111 or to the heating element corresponding to the heating zone on the first part 211 is less than the proportion of electrical power supplied by the power supply component 3 to the heating component 2 in the first stage t1 that is allocated to the first heating zone 2111 or to the heating element corresponding to the heating zone on the first part 211. Alternatively, in the second stage t2, the proportion of electrical power supplied by the power supply component 3 to the heating component 2 that is allocated to the heating zone on the second part 212 or to the heating element corresponding to the heating zone on the second part 212 is greater than or equal to 30%.

[0072] In the second stage t2, the proportion of aerosol generated on the aerosol generating article 1 at the location corresponding to the second part 212 can be greater than or equal to 25%, preferably greater than or equal to 40%. Further, in the second stage t2, the proportion of aerosol generated on the aerosol generating article 1 at the location corresponding to the second part 212 is less than or equal to 60%, or the proportion of aerosol generated on the aerosol generating article 1 at the location corresponding to the second part 212 is less than or equal to the proportion of aerosol generated on the aerosol generating article 1 at the location corresponding to the first part 211.

[0073] In some embodiments, the heating assembly 2 is configured to operate alternately by the first portion 211 and the second portion 212 during a second phase t2. During this second phase t2, the controller 4 controls the power supply assembly 3 to alternately provide electrical power to the heating zone on the first portion 211 or the heating element corresponding to the heating zone on the first portion 211, and to the heating zone on the second portion 212 or the heating element corresponding to the heating zone on the second portion 212. This helps prevent the aerosol-generating article 1 from being overheated or scorched by high temperatures, which is beneficial for ensuring that the aerosol generated by the aerosol-generating article 1 has a good taste. Simultaneously, it also helps prevent the maximum temperature at the distal end of the tubular substrate 21 from becoming too high.

[0074] In some embodiments, during the second stage t2, the temperature of the first part 211 or the heating element corresponding to the first part 211 repeatedly decreases and increases, while the temperature of the second part 212 or the heating element corresponding to the second part 212 repeatedly increases and decreases. Furthermore, the temperature changes of the first part 211 or the heating element corresponding to the first part 211 are opposite to the temperature changes of the second part 212 or the heating element corresponding to the second part 212. This helps prevent the aerosol-generating article 1 from being overheated or burnt at high temperatures, which is beneficial for ensuring that the aerosol generated by the aerosol-generating article 1 has a good taste. Simultaneously, it also helps prevent the maximum temperature of the second part 212 from becoming too high.

[0075] Of course, in the second stage t2, the temperature change amplitude of the part of the aerosol generating product 1 corresponding to the first part 211 can be reduced by controlling the duration of each operation and each shutdown of the first part 211, or the temperature change amplitude of the first part 211 can be reduced. Furthermore, in the second stage t2, the first part 211 can maintain a relatively stable temperature, or the part of the aerosol generating product 1 corresponding to the first part 211 can maintain a relatively stable temperature.

[0076] Similarly, the temperature variation of the part of the aerosol generating article 1 corresponding to the second part 212 can be reduced by controlling the duration of each operation and each shutdown of the second part 212, or the temperature variation of the second part 212 can be reduced. Furthermore, in the second stage t2, the second part 212 can maintain a relatively stable temperature, or the part of the aerosol generating article 1 corresponding to the second part 212 can maintain a relatively stable temperature.

[0077] In some embodiments, the controller 4 controls the power supply component 3 to provide electrical power to the heating component 2 for the start time of the first stage t1. Thus, in the first stage t1, the first part 211 can rise from its initial temperature to a first temperature. Since the first part 211 and the second part 212 are components of the tubular substrate 21, in the first stage t1, the second part 212 can absorb some of the heat from the first part 211 through thermal conduction, causing the temperature of the second part 212 to rise from its initial temperature to a second temperature. The initial temperature of the first part 211 can be equal to the initial temperature of the second part 212. The initial temperature of the first part 211 can be equal to the ambient temperature, for example, room temperature. The short interval between two consecutive operations of the heating component 2 allows residual heat to remain on the heating component 2, thus the initial temperature of the first part 211 can be higher than the ambient temperature.

[0078] The first temperature is higher than the second temperature. Preferably, the first temperature is greater than 250°C or greater than 300°C. Further, the first temperature is between 260°C and 300°C. The second temperature may be less than 200°C. Alternatively, the second temperature may be greater than 100°C. Further, the second temperature is between 150°C and 180°C.

[0079] In the second stage t2, the first part 211 can maintain the third temperature, or the average temperature of the first part 211 can be the third temperature. In the second stage t2, the second part 212 can maintain the fourth temperature, or the average temperature of the second part 212 can be the fourth temperature.

[0080] As an example, along the airflow direction, the portion of aerosol generating article 1 corresponding to the first part 211 is located downstream of the portion of aerosol generating article 1 corresponding to the second part 212. The fourth temperature is higher than the third temperature. The aerosol generated at the portion of aerosol generating article 1 corresponding to the second part 212 first flows into the portion of aerosol generating article 1 corresponding to the first part 211, and then flows out. Maintaining a fourth temperature higher than the third temperature helps lower the temperature at which the aerosol flows out of aerosol generating article 1, ensuring a suitable temperature for the aerosol entering the user's mouth and helping to prevent burns. Furthermore, in the second stage t2, some of the heat from the second part 212 can be conducted to the first part 211 through thermal conduction, helping to reduce the maximum temperature of the second part 212.

[0081] As an example, the fourth temperature is less than or equal to 230°C. Preferably, the fourth temperature is less than or equal to 220°C, or the fourth temperature is between 200°C and 230°C. Thus, the temperature of the second portion 212 is lower than the decomposition or melting temperature of the bottom filter element 12, allowing the heating assembly 2 to heat the aerosol-generating article 1 with the bottom filter element 12 at its distal end, and allowing the bottom filter element 12 to be located within the tubular substrate 21 and corresponding to the second portion 212, thereby eliminating the need to increase the distance between the second heating zone 2121 or the distal end of the second portion 212 and the tubular substrate 21. In one example, refer to Figure... Figure 4 The distance D between the heating zone on the second part 212 and the distal end of the tubular substrate 21 can be less than or equal to 0.6 mm. In one example, during the second stage t2, the highest temperature of the heating zone on the second part 212 is less than 230°C, or the temperature of the heating zone on the second part 212 is approximately 220°C.

[0082] As an example, the third temperature is less than or equal to 220°C. Preferably, the third temperature is between 200°C and 220°C. As an example, the temperature difference between the fourth temperature and the third temperature is less than or equal to 20°C. Preferably, the temperature difference between the fourth temperature and the third temperature is approximately 10°C.

[0083] In some embodiments, the duration of the first stage t1 is less than 15 seconds, and preferably the duration of the first stage t1 is between 3 seconds and 10 seconds, for example, the duration of the first stage t1 is about 7 seconds or about 8 seconds.

[0084] The duration of the second phase t2 is longer than the duration of the first phase t1. The end time of the first phase t1 can be used as the start time of the second phase t2. There can be a time interval between the end time of the first phase t1 and the start time of the second phase t2.

[0085] In some embodiments, during the second stage t2, the duration of each operation of the first part 211 is longer than the duration of each operation of the second part 212. Further, the duration of each operation of the first part 211 is less than 1 second or less than 0.5 seconds. For example, the duration of each operation of the first part 211 is approximately 0.3 seconds, and the duration of each operation of the second part 212 is approximately 0.2 seconds. This shorter duration of operation of the second part 212 prevents it from overheating. For example, during the second stage t2, the second part 212 operates for 0.2 seconds and then stops, while the first part 211 starts operating and stops after 0.3 seconds, then the second part 212 resumes operation, and so on. Further details are omitted.

[0086] In some embodiments, during the second stage t2, the duration of each operation of the second part 212 is less than the duration of each stop operation of the second part 212. Further, the difference between the duration of each stop operation and the duration of each operation of the second part 212 is less than 0.5 seconds. For example, the duration of each operation of the second part 212 is approximately 0.2 seconds, and the duration of each stop operation of the second part 212 is approximately 0.3 seconds.

[0087] In some embodiments, the controller 4 is configured to control the power supply component 3 to provide a first power to the heating component 2 in a first stage t1 and a second power to the heating component 2 in a second stage t2, wherein the first power is greater than the second power.

[0088] As an example, the first power is greater than or equal to 20W, which helps the first part 211 to quickly reach the first temperature in a shorter time.

[0089] As an example, the second power is less than or equal to 10W to prevent heat from accumulating in the aerosol-generating article 1, thereby preventing the aerosol-generating article 1 from being overheated or scorched by high temperature.

[0090] In some embodiments, the longitudinal length of the first heating zone 2111 is greater than the longitudinal length of the second heating zone 2121. Thus, in the first stage t1, more aerosol generating matrix 11 in the aerosol generating article 1 is heated, resulting in a sufficient amount of aerosol, a full volume of aerosol, a rich nicotine content, or a strong aroma in the first aerosol generated by the aerosol generating article 1.

[0091] Furthermore, the longitudinal length L1 of the first part 211 is greater than the longitudinal length L2 of the second part 212, thus the heating area of ​​the aerosol generating article 1 by the first part 211 is greater than the heating area of ​​the aerosol generating article 1 by the second part 212. As an example, the total amount of aerosol generated by the portion of the aerosol generating article 1 corresponding to the first part 211 is greater than the total amount of aerosol generated by the portion of the aerosol generating article 1 corresponding to the second part 212. In the second stage t2, the total amount of aerosol generated by the portion of the aerosol generating article 1 corresponding to the first part 211 may be no less than the total amount of aerosol generated by the portion of the aerosol generating article 1 corresponding to the second part 212.

[0092] Preferably, the ratio of the longitudinal length of the first heating zone 2111 to the longitudinal length of the second heating zone 2121 is 3:2, 2:1, or 7:3. More preferably, the ratio of the longitudinal length of the first portion 211 to the longitudinal length of the second portion 212 is 3:2, 2:1, or 7:3.

[0093] In some embodiments, the longitudinal distance between the side of the second portion away from the distal end of the tubular substrate and the distal end of the tubular substrate is approximately 5 mm, or approximately equal to the longitudinal height of the bottom filter element 12.

[0094] In some embodiments, the heating assembly 2 further includes a plurality of electrodes disposed on the tubular substrate 21, the plurality of electrodes being used to guide the flow direction of the current; wherein the current corresponding to the first heating zone 2111 flows longitudinally, and the current corresponding to the second heating zone 2121 and the third heating zone 2122 flows circumferentially.

[0095] In contrast, the second heating zone 2121 has a shorter longitudinal length. If the current flowing along the longitudinal direction in the second heating zone 2121, it will result in a lower resistance value for the second heating zone 2121 or the heating element corresponding to the second heating zone 2121. This is not conducive to the rapid rise of the second heating zone 2121 from the second temperature to the fourth temperature in the initial stage of the second phase t2, thereby affecting the heating efficiency of the second heating zone 2121 on the aerosol generating product 1 and the user experience. Conversely, if the current flowing circumferentially in the second heating zone 2121 results in a smaller cross-sectional area of ​​the second heating zone 2121 or the heating element corresponding to the second heating zone 2121 perpendicular to the current direction. This results in a higher resistance value for the second heating zone 2121 or the heating element corresponding to the second heating zone 2121, which is beneficial for improving the heating rate of the second heating zone 2121 and the heating efficiency on the aerosol generating product 1.

[0096] Similarly, the same applies to the third heating zone 2122.

[0097] Therefore, the current flowing circumferentially in the second heating zone 2121 and the third heating zone 2122 allows the second heating zone 2121 and the third heating zone 2122 to reach the second temperature in the first stage t1, so that the second part 212 has a higher initial temperature in the early stage of the second stage t2, and allows the second part 212 to preheat the aerosol generating product 1 in the first stage t1; on the other hand, the current flowing circumferentially in the second heating zone 2121 and the third heating zone 2122 allows the second part 212 to have a faster heating rate in the second stage t2, so that the highest temperature of the second part 212 can reach the fourth temperature in a very short time. At the same time, the second heating zone 2121 and the third heating zone 2122 are spaced apart circumferentially by the non-heating zone 2123, so that heat can be prevented from accumulating on the second heating zone 2121 and the third heating zone 2122, and thus the highest temperature of the second heating zone 2121 and the third heating zone 2122 can be prevented from exceeding 250°C.

[0098] In some embodiments, the second part 212 does not work in the first stage t1, or the controller 4 does not control the power supply component 3 to provide electrical power to the heating area on the second part 212 or the heating element corresponding to the second part 212 in the first stage t1. As a result, in the first stage t1, both the heating area and the non-heating area 2123 on the second part 212 can absorb heat from the first part, and the heat absorption efficiency of the heating area and the non-heating area 2123 on the second part 212 is basically the same. Thus, at the end of the first stage t1, the heating area and the non-heating area 2123 on the second part 212 have approximately the same temperature. In the second stage t2, since the power supply component 3 provides a relatively small amount of electrical power to the heating component 2 (e.g., less than 10W), the heating rate of the heating zone on the second part 212 is relatively slow compared to the heating rate of the first heating zone 2111 in the first stage t1. This provides sufficient time for the non-heating zone 2123 to absorb heat from the heating zone through thermal conduction and heat up. Ultimately, the temperature of the non-heating zone 2123 tends to be consistent with that of the heating zone. Therefore, it can also basically ensure that the temperature distribution on the second part 212 is uniform, which is beneficial to the uniform heating of the part of the aerosol generating product 1 corresponding to the second part 212.

[0099] Furthermore, the circumferential widths W11 and W12 of the non-heated area 2123 between two adjacent heating areas on the second part 212 are smaller than the circumferential width W2 of any adjacent heating area, so as to facilitate the non-heated area 2123 to quickly heat up by absorbing heat from the adjacent heating area.

[0100] Preferably, the circumferential width W1 of a single non-heated area 2123 on the second portion 212 satisfies: 0.5mm ≤ W1 ≤ 4mm. More preferably, 1mm ≤ W1 ≤ 3mm. For example, W1 can be approximately 1mm, 1.5mm, or 2.1mm. In some embodiments, the second portion 212 has a plurality of non-heated areas 2123, wherein at least one non-heated area 2123 has a circumferential width of W11, and at least one non-heated area 2123 has a circumferential width of W12. In other words, W1 includes W11 and W12, the ranges of W11 and W12 are within the range of W1, and W12 < W11.

[0101] Preferably, the circumferential width W2 of a single heating zone on the second part 212 satisfies: 2mm ≤ W2 ≤ 5mm. More preferably, 3mm ≤ W2 ≤ 5mm. For example, W2 can be approximately 3.7mm, 3.9mm, or 4.3mm.

[0102] In some embodiments, the current corresponding to the second heating zone 2121 and the current corresponding to the third heating zone 2123 are in opposite directions.

[0103] In some embodiments, the electrodes include a first annular electrode 221, a second annular electrode 222, a first electrode 223, and a second electrode 224. The first annular electrode 221 is located between the first portion 211 and the proximal end of the tubular substrate 21 and is disposed around the tubular substrate 21. The second annular electrode 222 is located between the first portion 211 and the second portion 212 and is disposed around the tubular substrate 21. A first heating region 2111 is located between the first annular electrode 221 and the first annular electrode 222. The first electrode 223 and the second electrode 224 are located in the second portion 212, and the first electrode 223 and the second electrode 224 cause the second heating region 2121 and the third heating region 2122 to be spaced apart in the circumferential direction.

[0104] The non-heated area 2123 on the second part 212 may include the area where the tubular substrate 21 is disposed corresponding to the first electrode 223 and the second electrode 224.

[0105] As an example, the first electrode 223 is configured to be electrically connected to one electrode of the power supply assembly 3 via a conductive element, and the second electrode 224 is configured to be electrically connected to another electrode of the power supply assembly 3 via another conductive element. The first electrode 223 is disposed between one side of the second heating zone 2121 and one side of the third heating zone 2122, and the second electrode 224 is disposed between the other side of the second heating zone 2121 and the other side of the third heating zone 2122, thereby causing the current corresponding to the second heating zone 2121 and the current corresponding to the third heating zone 2122 to be in opposite directions.

[0106] As an example, you can refer to Figures 3-7 The first electrode 223 is connected to the second annular electrode 222, and the second electrode 224 is spaced apart from the second annular electrode 222. Thus, the second annular electrode 222 can be electrically connected to the power supply assembly 3 through the first electrode 223, eliminating the need for the second annular electrode 222 to be directly welded or contacted with conductive elements. This solves the problem of difficulty or inconvenience in connecting electrodes located in the middle region of the heating assembly 2. Preferably, one end of the first electrode 223 is electrically connected to the second annular electrode 222, and the other end of the first electrode 223 is positioned near the distal end of the tubular substrate 21. The spaced-apart arrangement of the second electrode 224 and the second annular electrode 222 prevents short circuits.

[0107] In this configuration, one of the first annular electrode 221 and the second annular electrode 222 is electrically connected to the positive terminal of the power supply component 3, and the other is electrically connected to the negative terminal of the power supply component 3. It is understood that the first annular electrode 221 and the second electrode 224 can be electrically connected to the same electrode of the power supply component 3.

[0108] Furthermore, you can refer to Figure 7The system includes multiple first electrodes 223 spaced apart, each of which is electrically connected to a second annular electrode 222. Electrical connection of any one of the first electrodes 223 to the power supply assembly 3 ensures that both the second annular electrode 222 and all the first electrodes 223 are electrically connected to the power supply assembly 3. Each of the multiple first electrodes 223 can be electrically connected to the same electrode of the power supply assembly 3 via a separate conductive element.

[0109] As an example, you can refer to Figures 5-7 The electrode also includes a third annular electrode 225, which is located between the second portion 212 and the distal end of the tubular substrate 21 and surrounds the tubular substrate 21. The first electrode 223 is spaced apart from the third annular electrode 225 to prevent short circuits. The second electrode 224 is connected to the third annular electrode 225. Thus, the second electrode 224 can be electrically connected to the power supply assembly 3 through the third annular electrode 225, or the third annular electrode 225 can be electrically connected to the power supply assembly 3 through the second electrode 224.

[0110] Furthermore, you can refer to Figure 7 It includes a plurality of second electrodes 224 spaced apart, and all of the plurality of second electrodes 224 are electrically connected to the third annular electrode 225. When the third annular electrode 225 is electrically connected to the power supply component 3, or when any one of the second electrodes 224 is electrically connected to the power supply component 3, the other second electrodes 224 can be electrically connected to the power supply component 3.

[0111] In such Figure 5 In the embodiment shown, one edge of the third annular electrode 225 may be flush with the distal end of the tubular substrate 21.

[0112] In some embodiments, the heating assembly 2 further includes one or more empty electrodes 226 spaced apart from the other electrodes. The empty electrodes 226 are disposed on the second portion 212 and are configured not to be welded to or abutted against the conductive element, so as not to be directly electrically connected to the power supply assembly 3 through the conductive element. The non-heating area 2123 on the second portion 212 may include the area of ​​the tubular substrate 21 corresponding to the empty electrode 226.

[0113] As an example, the circumferential width of the empty electrode 226 is smaller than the circumferential width of the first electrode 223 or the second electrode 224. The circumferential width of the empty electrode 226 can be W12. The circumferential width of the first electrode 223 or the second electrode 224 can be W11.

[0114] As an example, the heating assembly 2 also includes a heating element, at least partially corresponding to the second heating zone 2121, and the heating element is electrically connected to the first electrode 223 and an empty electrode 226 adjacent to the first electrode 223, so that the second heating zone 2121 is located between the first electrode 223 and the empty electrode 226 adjacent to the first electrode 223.

[0115] As an example, the heating assembly 2 also includes a heating element, at least partially corresponding to the third heating zone 2122, and the heating element is electrically connected to the second electrode 224 and an empty electrode 226 adjacent to the second electrode 224, so that the third heating zone 2122 is located between the second electrode 224 and the empty electrode 226 adjacent to the second electrode 224.

[0116] As an example, at least a portion of the heating element is located between two adjacent empty electrodes 226, and the heating element is electrically connected to the two empty electrodes 226, thereby creating a heating zone between the two adjacent empty electrodes 226.

[0117] It is understood that the second part 212 may have multiple heating zones, and any two adjacent heating zones may be separated by an empty electrode 226, a first electrode 223 or a second electrode 224, or any two adjacent heating zones may be separated by a non-heating zone 2123.

[0118] Preferably, the second part 212 has 2*N heating zones, where N is an integer greater than or equal to 1. More preferably, the heating zones on the second part 212 have the same size or the same temperature distribution characteristics, or the multiple heating zones on the second part 212 are evenly distributed in the circumferential direction and are spaced apart from each other.

[0119] The heating elements that correspond to different heating zones on the second part 212, or the parts of the heating elements that correspond to different heating zones on the second part 212, can have the same size, the same resistance value, or the same operating power.

[0120] Of course, in other examples, the second part 212 may also have at least three heating zones.

[0121] As an example, an empty electrode 226 adjacent to the first electrode 223 is defined as the first empty electrode. The first empty electrode is disposed between the first electrode 223 and the second electrode 224. The first electrode 223 and the first empty electrode have a second heating region 2121, and the second electrode 224 and the first empty electrode have a fourth heating region 2125. The second heating region 2121 and the fourth heating region 2125 are located on the same side of the first electrode 223 in the circumferential direction, such that the current corresponding to the second heating region 2121 and the current corresponding to the fourth heating region 2125 have the same direction.

[0122] As an example, an empty electrode adjacent to the second electrode 224 is defined as the second empty electrode. The first empty electrode and the second empty electrode are located on opposite sides of the first electrode 223 or the second electrode 224 in the circumferential direction. There is a third heating zone 2122 between the first electrode 223 and the second empty electrode or between the second electrode 224 and the second empty electrode, so that the current corresponding to the second heating zone 2121 and the current corresponding to the third heating zone 2122 have opposite directions.

[0123] Furthermore, a third heating zone 2122 is provided between the first electrode 223 and the second empty electrode, and a fifth heating zone 2124 is provided between the second electrode 224 and the second empty electrode.

[0124] It is understood that the heating assembly 2 may include multiple heating elements, with at least two heating elements being configured one-to-one with at least two heating zones on the second part 212.

[0125] Alternatively, in some embodiments, the heating assembly 2 includes a second heating element 24, which is disposed around the periphery of the second portion 212 and simultaneously corresponds to the second heating area 2121 and the third heating area 2122, and the first electrode 223 and the second electrode 224 overlap with different parts of the second heating element 24.

[0126] Because the resistance of the electrode is much smaller than that of the heating element, the portion of the heating element that overlaps with the electrode is almost short-circuited by the electrode. Therefore, compared to other parts of the heating element, the portion of the heating element that overlaps with the electrode releases almost no energy, or the released energy is negligible, when the heating element is working. Thus, the area of ​​the tubular substrate 21 corresponding to the electrode and the portion of the heating element corresponding to the electrode can be understood as the non-heating area 2123.

[0127] Different portions of the second heating element 24 can correspond to at least one heating zone and at least one non-heating zone 2123. By overlapping the first electrode 223, the second electrode 224, and / or the empty electrode 226 with different portions of the second heating element 24, multiple heating zones are spaced apart in the circumferential direction, which helps to simplify the manufacturing process of the heating assembly 2 and improve the production efficiency of the heating assembly 2. Furthermore, the corresponding electrodes can be first placed on the tubular substrate 21, and then the second heating element 24 can be bonded to or formed on the tubular substrate 21. Alternatively, the second heating element 24 can be first bonded to or formed on the tubular substrate 21, and then the corresponding electrodes can be placed on or electrically connected to the second heating element 24.

[0128] The second heating element 24 may include a coating or film, a heating mesh, or a spiral coil bonded to or formed on the tubular substrate 21.

[0129] As an example, the tubular substrate 21 includes a non-transparent material that prevents light from passing through the second portion 212. For example, the tubular substrate 21 may include ceramic or metal. The second heating element 24 may include a resistance heating element or an electromagnetic heating element. The tubular substrate 21 may absorb the heat from the second heating element and may release at least a portion of the absorbed heat toward the aerosol generating article 1, thereby heating the aerosol generating article 1.

[0130] As an example, the tubular substrate 21 includes a transparent material that allows light to pass through the second portion 212, such as glass or quartz. The second heating element 24 may include a light-heating element, such as an infrared heating coating. The light generated by the second heating element 24 passes through the second portion 212 and is projected onto the aerosol-generating article 1, thereby heating the aerosol-generating article 1. Alternatively, the second heating element 24 may also be capable of generating heat, with the second portion 212 transferring the heat generated by the second heating element 24 to the aerosol-generating article 1, and the second heating element 24 may also generate light that can pass through the second portion 212 and be projected onto the aerosol-generating article 1.

[0131] In some embodiments, the heating assembly 2 further includes a first heating element 23, which is disposed around the periphery of the first portion 211 and corresponds to the first heating area 2111. The two ends of the first heating element 23 in the longitudinal direction are electrically connected to the first annular electrode 221 and the second annular electrode 222, respectively.

[0132] The first heating element 23 may include a coating or film, a heating mesh, or a spiral coil bonded to or formed on the tubular substrate 21.

[0133] The first heating element 23 and the second heating element 24 may not be directly connected. Alternatively, they may be directly connected, with the first portion 211 and the second portion 212 spaced apart by overlapping contact between the second annular electrode 222 and the connection point of the first heating element 23 and the second heating element 24. The first heating element 23 and the second heating element 24 may be bonded to or formed in the tubular substrate 21 in the same manner. The first heating element 23 and the second heating element 24 may have the same resistivity or be made of the same material. The first heating element 23 and the second heating element 24 may have the same structural features.

[0134] In some embodiments, during the second stage t2, when the first part 211 is operating, a first voltage exists between the first annular electrode 221 and the second annular electrode 222, and when the second part 212 is operating, a second voltage exists between the first electrode 223 and the second electrode 224, wherein the first voltage is equal to the second voltage. In other embodiments, the first voltage is not equal to the second voltage.

[0135] In some embodiments, during the second stage t2, when the first part 211 is operating, the first heating element 23 has a first current, and when the second part 212 is operating, the second heating element 24 has a second current, wherein the first current is equal to the second current. In other embodiments, the first current is not equal to the second current.

[0136] In some embodiments, during the second stage t2, when the first part 211 is operating, the first part 211 has a first total power, and when the second part 212 is operating, the second part 212 has a second total power, wherein the first total power is less than or equal to the second total power. In other embodiments, the first total power is greater than the second total power.

[0137] In some embodiments, the first electrode 223 and the second electrode 224 extend longitudinally. The empty electrode 226 may extend longitudinally.

[0138] It should be noted that the preferred embodiments of this application are given in the specification and accompanying drawings, but are not limited to the embodiments described in this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A heating assembly, characterized in that, include: A tubular substrate having a proximal end and a distal end disposed opposite to each other, wherein the proximal end of the tubular substrate provides an inlet for insertion of an aerosol-generating article; The tubular matrix includes a first portion and a second portion distributed longitudinally. The first portion is closer to the proximal end of the tubular matrix than the second portion and has an annular first heating zone. The second portion has a second heating zone and a third heating zone distributed circumferentially and spaced apart from each other. The heating zones are configured to provide energy to heat the aerosol-generated article.

2. The heating assembly according to claim 1, characterized in that, It also includes a plurality of electrodes disposed on the tubular substrate, the plurality of electrodes being used to guide the flow direction of the current; The current corresponding to the first heating zone flows longitudinally, while the current corresponding to the second and third heating zones flows circumferentially.

3. The heating assembly according to claim 2, characterized in that, The current corresponding to the second heating zone and the current corresponding to the third heating zone are in opposite directions.

4. The heating assembly according to claim 2, characterized in that, The electrode includes a first annular electrode, a second annular electrode, a first electrode, and a second electrode. The first annular electrode is located between the first portion and the proximal end of the tubular substrate and is disposed around the tubular substrate. The second annular electrode is located between the first portion and the second portion and is disposed around the tubular substrate. The first heating zone is located between the first annular electrode and the first annular electrode. The first electrode and the second electrode are located in the second portion, and the first electrode and the second electrode cause the second heating zone and the third heating zone to be spaced apart in the circumferential direction.

5. The heating assembly according to claim 4, characterized in that, The first electrode is connected to the second annular electrode, and the second electrode is spaced apart from the second annular electrode.

6. The heating assembly according to claim 4, characterized in that, The electrode further includes a third annular electrode, which is located between the second portion and the distal end of the tubular substrate and is disposed around the tubular substrate; The first electrode and the third annular electrode are spaced apart, and the second electrode is connected to the third annular electrode.

7. The heating assembly according to claim 4, characterized in that, It also includes a heating element and one or more empty electrodes that are spaced apart from other electrodes; The heating element is at least partially disposed corresponding to the second heating zone and is electrically connected to the first electrode and the empty electrode adjacent to the first electrode; or The heating element is at least partially disposed corresponding to the third heating zone and is electrically connected to the second electrode and the empty electrode adjacent to the second electrode; or The heating element is located at least partially between two adjacent empty electrodes and is electrically connected to the two empty electrodes.

8. The heating assembly according to claim 4, characterized in that, The heating assembly further includes a first heating element and a second heating element. The first heating element is arranged around the periphery of the first part and corresponds to the first heating area. The two opposite ends of the first heating element in the longitudinal direction are electrically connected to the first annular electrode and the second annular electrode, respectively. The second heating element is arranged around the periphery of the second part and is simultaneously arranged corresponding to the second heating area and the third heating area, and the first electrode and the second electrode overlap with different parts of the second heating element.

9. The heating assembly according to any one of claims 4-8, characterized in that, The first electrode and the second electrode extend longitudinally.

10. The heating assembly according to claim 1, characterized in that, The longitudinal length of the first heating zone is greater than the longitudinal length of the second heating zone; or The longitudinal length of the first heating zone is greater than the longitudinal length of the second heating zone in a ratio of 3:2, 2:1, or 7:

3.

11. An aerosol generating device, characterized in that, The heating assembly, as described in any one of claims 1-10, further includes a controller and a power supply assembly, wherein the controller controls the power supply assembly to provide electrical power to the heating assembly so that the heating zone provides energy to heat the aerosol-generating article.

12. The aerosol generating apparatus according to claim 11, characterized in that, The controller is configured to control the power supply component to provide electrical power to the heating component in a first phase and a second phase, wherein in the first phase, the first component operates primarily, and in the second phase, the second component operates at least primarily.

13. The aerosol generating apparatus according to claim 12, characterized in that, The controller is configured to control the power supply component to provide a first power to the heating component in a first stage and a second power to the heating component in a second stage, wherein the first power is greater than or equal to 20W and / or the second power is less than or equal to 10W.

14. The aerosol generating apparatus according to claim 12, characterized in that, The heating assembly is configured to operate alternately by the first part and the second part during the second phase.

15. The aerosol generating apparatus according to claim 14, characterized in that, In the second phase, the duration of each work session in the first part is longer than the duration of each work session in the second part; or In the second phase, the duration of each working session in the second part is less than the duration of each shutdown in the second part.

16. The aerosol generating apparatus according to claim 14, characterized in that, In the second stage, the average temperature of the first part is lower than the average temperature of the second part.

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