Aerosol generating device, heating control method thereof and storage medium

Abstract

The invention provides an aerosol generating device and a heating control method thereof and a storage medium, the aerosol generating device comprises a heating chamber, a power supply, a heating assembly and a control assembly, the heating assembly comprises a first heating element located in the heating chamber and a second heating element surrounding the inner wall of the heating chamber, the heating control method comprises the steps that S1, the control assembly obtains a heating instruction; s2, the control assembly controls the first heating element and the second heating element to be heated to the first preheating temperature and the second preheating temperature in the preheating stage correspondingly according to the heating instruction; and S3, the control assembly controls the first heating element and the second heating element to be heated to the first suction temperature and the second suction temperature in the suction stage correspondingly. By adopting an internal and external combined heating mode, the uniformity of internal and external temperature fields of tobaccos can be improved, the problems of low starting speed and low smoke discharge speed of independent peripheral heating are solved, and the problems of strength and smoke quantity attenuation after independent inner core heating and smoking can also be solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of aerosol device heating, and particularly relates to an aerosol generating device and a heating control method and storage medium thereof. BACKGROUND

[0002] Currently, the heating forms of electric heating appliances mainly include core heating and peripheral heating.

[0003] Core heating is to insert a heating element into the middle position of a tobacco segment of a cigarette, and heat spreads from the center of the cigarette to the outside. Core heating has high heat utilization rate and fast smoke speed due to its close contact with tobacco, and the early taste is good. However, since the heat is mainly concentrated in the tobacco, the surrounding tobacco is not sufficiently baked, and the tobacco utilization rate is not high, so the strength and smoke volume gradually decrease in the later stage of smoking.

[0004] Peripheral heating is to wrap a heating element around the outside of a tobacco segment of a cigarette, and heat spreads from the outside of the cigarette to the inside. Since the tobacco segment is wrapped with cigarette paper, the heat transfer to the tobacco is slow in the early heating stage, and the smoke speed is slightly slow. However, due to the heat accumulation effect of the tobacco segment, the strength and smoke volume gradually increase in the later stage of smoking.

[0005] Therefore, core heating and peripheral heating have their own advantages in smoking taste. How to combine the advantages of the two to improve the smoking experience is a problem to be solved by those skilled in the art. SUMMARY

[0006] Therefore, the present application aims to provide an aerosol generating device and a heating control method and storage medium thereof to solve the above problems.

[0007] To solve the above technical problems, the present application adopts the following technical solutions:

[0008] In a first aspect, the present application provides a heating control method of an aerosol generating device, the aerosol generating device comprising a heating chamber, a power supply, a heating assembly, and a control assembly. The heating assembly is used to heat an aerosol-forming substrate accommodated in the heating chamber when in operation to generate an aerosol. The control assembly is used to control the heating assembly to heat. The heating assembly comprises a first heating element in the heating chamber and a second heating element surrounding the inner wall of the heating chamber. The heating control method comprises the following steps: S1: the control assembly acquires a heating instruction; S2: the control assembly controls the first heating element and the second heating element to heat to a first preheating temperature and a second preheating temperature, respectively, in a preheating stage according to the heating instruction; and S3: the control assembly controls the first heating element and the second heating element to heat to a first puffing temperature and a second puffing temperature, respectively, in a puffing stage.

[0009] Further, the first preheating temperature is greater than the second preheating temperature, and the step S2 comprises: a step A21 of controlling the control assembly to control the second heating element to heat at full power to the second preheating temperature; and a step A22 of controlling the control assembly to start the first heating element and control the first heating element to heat to the first preheating temperature when the second heating element heats for a preset time length.

[0010] Further, the first preheating temperature is greater than the second preheating temperature, and the step S2 comprises: a step A21 of controlling the control assembly to control the second heating element to heat at full power to the second preheating temperature; and a step A22 of controlling the control assembly to start the first heating element and control the first heating element to heat to the first preheating temperature when the second heating element heats for a preset time length.

[0011] Further, the first preheating temperature is greater than the second preheating temperature, and the step S2 comprises: a step B21 of controlling the control assembly to control the first heating element to heat at full power to the first preheating temperature; and a step B22 of controlling the control assembly to start the second heating element and control the second heating element to heat to the second preheating temperature when the first heating element heats for a preset time length.

[0012] Further, the first preheating temperature is greater than the second preheating temperature, and the step S2 comprises: a step B21 of controlling the control assembly to control the first heating element to heat at full power to the first preheating temperature; and a step B22 of controlling the control assembly to start the second heating element and control the second heating element to heat to the second preheating temperature when the first heating element heats for a preset time length.

[0013] Further, the first preheating temperature is greater than the second preheating temperature, and the step S2 comprises: a step C21 of controlling the control assembly to control the first heating element and the second heating element to start simultaneously and heat at an average power; and a step C22 of controlling the control assembly to control the first heating element to heat to the first preheating temperature and the second heating element to heat to the second preheating temperature in the preheating stage.

[0014] Further, the first preheating temperature is greater than the second preheating temperature, and the step S2 comprises: a step C21 of controlling the control assembly to control the first heating element and the second heating element to start simultaneously and heat at an average power; and a step C22 of controlling the control assembly to control the first heating element to heat to the first preheating temperature and the second heating element to heat to the second preheating temperature in the preheating stage.

[0015] In a second aspect, the present application provides an aerosol generating device, comprising: a heating chamber, a power supply, a heating assembly, and a control assembly, the heating assembly being configured to heat an aerosol-forming substrate received in the heating chamber when in operation to generate an aerosol, the control assembly being configured to control the heating assembly to heat, the heating assembly comprising a first heating element in the heating chamber and a second heating element surrounding an inner wall of the heating chamber, and the control assembly being configured to obtain a heating instruction; control the first heating element and the second heating element to heat to a first preheating temperature and a second preheating temperature respectively in a preheating stage according to the heating instruction; and control the first heating element and the second heating element to heat to a first puffing temperature and a second puffing temperature respectively in a puffing stage.

[0016] Further, the heating assembly further comprises a fixing seat, the first heating element is fixed in the middle of the fixing seat, and the second heating element is fixed outside the fixing seat.

[0017] Further, the first heating element is in a conical structure, and a conical surface of the first heating element is inserted into the inside of the aerosol forming substrate for heating.

[0018] The aerosol generating article is preferably a smoking article comprising an aerosol forming substrate which generates an aerosol by heating which is directly inhalable by a user into the lungs of the user through the mouth of the user.

[0019] Preferably, the aerosol forming substrate is a solid aerosol forming substrate. The aerosol forming substrate can comprise both solid and liquid components.

[0020] Preferably, the aerosol forming substrate comprises nicotine. In some preferred embodiments, the aerosol forming substrate comprises tobacco.

[0021] The aerosol generating device is used to describe a device which interacts with the aerosol forming substrate of the aerosol generating article to generate an aerosol. Preferably, the aerosol generating device is a smoking device which interacts with the aerosol forming substrate of the aerosol generating article to generate an aerosol which is directly inhalable by a user into the lungs of the user through the mouth of the user. The aerosol generating device can be a holder for a smoking article.

[0022] The power source can be any suitable power source, for example a direct current voltage source such as a battery. In one embodiment, the power source is a lithium ion battery. Alternatively, the power source can be a nickel metal hydride battery, a nickel cadmium battery or a lithium based battery such as a lithium cobalt, lithium iron phosphate, lithium titanate or lithium polymer battery.

[0023] The control element can be a simple switch. Alternatively, the control element can be an electrical circuit and can comprise one or more microprocessors or microcontrollers.

[0024] The aerosol generating system can comprise the aerosol generating device and one or more aerosol generating articles, the aerosol generating device being configured to receive the corresponding number of heating chambers containing the aerosol generating articles.

[0025] From the above technical solutions, the aerosol generating device, the heating control method and the storage medium proposed by the present application have the following advantages and positive effects:

[0026] The application adopts the cooperative heating of the inner heating element and the peripheral heating element, both of which are connected in close contact through the fixing seat, facilitating the mutual heat conduction between the inner heating element and the peripheral heating element, and being beneficial to improving the consistency of the heat inside and outside the tobacco. Moreover, the inner heating element adopts a conical structure design, which is beneficial to reducing the adhesion between the inner heating element and the tobacco after heating, preventing the tobacco fragments from falling into the heating chamber when the cigarette is taken out.

[0027] The application also controls the power distribution of the two heating elements through the control assembly, adopts the power distribution control technology of "peak-shaving starting heating", and reduces the energy consumption of the cooperative heating body.

[0028] The application also simultaneously provides three power and temperature control modes for users to select, realizes different smoking tastes, and is superior to the smoking effect of a single heating body. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above content of the application and the following detailed implementation will be better understood when read in combination with the drawings. It should be noted that the drawings are only examples of the claimed technical solutions.

[0030] Figure 1 is a structure diagram of the heating assembly of the application;

[0031] Figure 2 is a functional schematic diagram of the control assembly of the application;

[0032] Figure 3 is a flowchart of the heating control method of the aerosol generating device of the application;

[0033] Figure 4 is a temperature control curve diagram of the aerosol generating device of the application example 1;

[0034] Figure 5 is a temperature control curve diagram of the aerosol generating device of the application example 2;

[0035] Figure 6 is a temperature control curve diagram of the aerosol generating device of the application example 3.

[0036] Among them, the reference signs are explained as follows:

[0037] First heating element: 1;

[0038] Second heating element: 2;

[0039] Fixing seat: 3. DETAILED DESCRIPTION

[0040] The detailed features and advantages of the present application are set forth in the detailed description which follows, as permitted by the nature of the present application, and will be readily apparent to those skilled in the art having the benefit of this disclosure, as set forth in the description and claims, along with the accompanying drawings, in which:

[0041] The present application will now be described with reference to the drawings, wherein like reference numerals refer to like elements throughout. While specific structures and arrangements are discussed, it should be understood that these are used by way of example only. Those skilled in the art will recognize that other structures and arrangements can be used without departing from the spirit and scope of the present application. It will be apparent to those skilled in the art that the present application can also be employed in various other applications.

[0042] In this specification and in the claims, unless otherwise indicated, the terms "including", "involving", and "comprising" are to be construed as meaning "including, without limitation" or "comprising, without limitation." Thus, use of these terms is not intended to limit the scope of the application to the recited components or steps, but rather to allow for the inclusion of additional components or steps.

[0043] The singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. "One" or "a" means one or more. "Plural" means two or more. "At least one of' or "one or more of' the following items, or the like, refers to any combination of one or more of the listed items, including single items or combinations of multiple items. For example, "at least one of a, b, and c" can refer to only a, only b, only c, or a combination of a, b, and c.

[0044] All numbers used herein to express quantities, properties, etc. should be considered to be modified by the term "about" or "approximately," unless otherwise indicated. Accordingly, unless otherwise indicated, the numerical values set forth herein are approximations. Stated otherwise, it is intended that the application embrace all variations falling within the scope of the description, as well as equivalents thereof. It is to be understood, however, that the application is not limited to the particular examples described, as such will suggest many alternatives, modifications and variations as falling within the scope of the present application. It is also to be understood that the terminology used herein is for the purpose of describing only the particular examples disclosed herein and is not intended to be limiting.

[0045] It should be understood that the term "and / or", merely used herein to describe a correlation relationship of associated objects, means that there can be three relationships, for example, A and / or B, can represent: A exists alone, A and B exist together, B exists alone, where A, B can be singular or plural. In addition, the character " / " herein generally represents that the associated objects before and after are an "or" relationship, but can also represent an "and / or" relationship, which can be understood according to the context before and after.

[0046] In the description of the present embodiments, it needs to be explained that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0047] Unless otherwise indicated, the following abbreviations have the following meanings and any other abbreviations not defined herein have their generally accepted standard meanings:

[0048] It is intended that all other terms used in this patent have their ordinary meanings to those skilled in the art as understood in light of the specification and the drawings, particularly the meanings that those skilled in the art will be able to ascertain upon reading the claims, specification and drawings without undue experimentation.

[0049] Even if there are incomplete descriptions, omissions or ambiguities in the grammar, words, punctuation, graphics, symbols and the like in the claims, specification and drawings of the present patent, those skilled in the art can still arrive at the only correct understanding without undue experimentation or testing by reading the claims, specification and drawings as a whole, and effectively exclude all kinds of incorrect understanding methods not aimed at achieving the purpose of the present patent.

[0050] Those skilled in the art will first choose to read the claims, specification and drawings of the present patent to reasonably explain the terms, secondly choose to refer to the relevant definitions of the applicant in other documents disclosed before the filing date to reasonably explain the terms, thirdly choose to reasonably explain the terms by referring to the references cited in the present patent, and finally choose to reasonably explain the terms by combining the technical dictionaries, technical manuals, reference books, textbooks, national or industry technical standards and the like commonly used by those skilled in the art.

[0051] In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0052] Please refer to Figure 1 The present application provides an aerosol generating device comprising a heating chamber, a power supply, a heating assembly and a control assembly, the heating assembly is used for heating an aerosol forming substrate accommodated in the heating chamber during operation to generate an aerosol, the control assembly is used for controlling the heating assembly to heat, the heating assembly comprises a first heating element 1 in the heating chamber and a second heating element 2 surrounding the inner wall of the heating chamber.

[0053] The heating assembly further comprises a fixing seat 3, the first heating element 1 is fixed in the middle of the fixing seat 3, and the second heating element 2 is fixed outside the fixing seat 3.

[0054] Specifically, the first heating element 1 is fixed in close contact with the second heating element 2 through the bottom fixing seat 3, the fixing seat 3 at the bottom of the first heating element 1 is made of a high-thermal-conductivity material or a high-thermal-conductivity coating material, such as a high-thermal-conductivity carbon material, a metal material, a high-thermal-conductivity ceramic or the like, so as to facilitate the mutual conduction of heat between the first heating element 1 and the second heating element 2, and improve the consistency of heat inside and outside the tobacco.

[0055] Preferably, the length of the first heating element 1 can be less than half the length of the tobacco segment.

[0056] The first heating element 1 can adopt a conical structure design, which is beneficial to reduce the adhesion between the first heating element 1 and the tobacco after heating, and prevent tobacco fragments from falling into the heating chamber when the cigarette is taken out.

[0057] The second heating element 2 can be heated by using a heating resistance coating, an infrared heating material coating, electromagnetic induction heating and the like.

[0058] Please refer to Figure 2 The control assembly is composed of a lithium battery core, a lithium battery protection circuit, a microcontroller (MCU), a charging unit, an interactive display unit (display, key, motor, etc.), a circumferential heating body output control circuit, a needle type heating body output control circuit, a current detection unit and a temperature detection unit.

[0059] The control assembly provides a driving voltage at both ends of the heating body, the driving voltage is a square wave that is continuously turned on and turned off, and the temperature of the current heating body can be obtained by measuring the voltage of the heating body. The microcontroller adjusts the on-off time ratio of the heating body driving voltage according to the current temperature, and controls the temperature of the heating body to be kept at a preset temperature.

[0060] The power supply module includes a rechargeable power source for providing power output for the entire system. Since the peripheral and core double heating modules are adopted, and the heating resistance of the heating body is relatively small, in order to ensure the output power in the preheating stage, a high-rate discharge battery core is adopted, and the maximum discharge current can reach 10A.

[0061] According to the output power formula P=U2 / R: when the battery output voltage is constant and does not exceed the limit output current of the battery, the smaller R is, the greater the power is; since the resistance of the heating body will increase with the increase of temperature, therefore, before starting heating, the resistance of the heating body is the smallest, and at this time, the output power is the largest.

[0062] Therefore, in order to reduce the combined heating energy consumption and reduce the battery carrying capacity, the power distribution control technology of "peak-shaving starting heating" is selected for the peripheral heating and the inner core heating due to the adoption of the double heating element mode. That is, one heating body is heated at full power first, and when the temperature of the heating body rises, the resistance gradually becomes large, at which time the output power is not required to be so large, and then the other heating body is started. Since the inner core heating body concentrates heat in the tobacco, the maximum temperature allowed is higher than that of the peripheral heating body. If the temperature of the peripheral heating body is too high, a part of the heat will be conducted to the shell, causing the shell to be hot, which affects the use experience and safety.

[0063] Please refer to Figure 3 Based on the same inventive concept, the application also provides a control heating control method of an aerosol generating device. The control method can be applied to the aerosol generating device. The specific steps of the control heating control method include:

[0064] Step S1: The control component obtains a heating instruction.

[0065] Step S2: The control component controls the first heating element and the second heating element to heat to a first preheating temperature and a second preheating temperature respectively in a preheating stage according to the heating instruction.

[0066] Step S3: The control component controls the first heating element and the second heating element to heat to a first puffing temperature and a second puffing temperature respectively in a puffing stage.

[0067] It can be understood that, by adopting the cooperative heating mode of the first heating element 1 and the second heating element 2, the uniformity of the temperature field inside and outside the tobacco can be improved, the problem of slow starting speed and slow smoke of the peripheral heating alone can be solved, and the problem of attenuation of puffing strength and smoke amount in the latter stage of puffing of the inner core heating alone can also be solved.

[0068] Exemplarily, please refer to Figure 4 In the embodiment 1 provided by the application, step S2 includes:

[0069] Step A21: The control component controls the second heating element to heat at full power to the second preheating temperature.

[0070] Step A22: When the second heating element heats for a preset time length, the control component starts the first heating element and controls the first heating element to heat to the first preheating temperature.

[0071] Wherein, the first preheating temperature is greater than the second preheating temperature.

[0072] Specifically, in the preheating stage, after the peripheral heating element is full-power output for a time t1, at this time the temperature of the peripheral heating element is raised, the resistance is increased, and the required output power is reduced, at this time the inner core heating is started again to perform heat compensation, to improve the preheating speed, and to compensate for the slow preheating speed of the peripheral heating. The preheating time t2.

[0073] The maximum temperature of the inner core heating element in the preheating stage is T1, and the maximum temperature of the peripheral heating element in the preheating stage is T3, T3 < T1.

[0074] Step S3 can include:

[0075] Step A31: The control component controls the second heating element to heat to a second puffing temperature.

[0076] Step A32: The control component controls the first heating element to heat to a first puffing temperature.

[0077] The first puffing temperature is less than the second puffing temperature.

[0078] Specifically, the control component provides a constant power output to the peripheral heating element, and the peripheral heating element is heated by the temperature rise to heat the tobacco, and the peripheral temperature in the puffing stage is T4; at the same time, a lower power output is provided to the inner core heating element, and the temperature of the peripheral heating element can be partially conducted to the inner core heating element through the heat conduction material, and the inner core temperature in the puffing stage is T2, T2 < T4. Forming a heating effect in the puffing stage, the peripheral heating is mainly heated, and the inner core heating is supplemented.

[0079] Please refer to Figure 5 In the embodiment 2 provided in the application, step S2 can include:

[0080] Step B21: The control component controls the first heating element to heat to a second preheating temperature with full power.

[0081] Step B21: When the first heating element heats for a preset time, the control component starts the second heating element, and controls the second heating element to heat to a second preheating temperature.

[0082] The first preheating temperature is greater than the second preheating temperature.

[0083] Specifically, in the preheating stage, after the inner core heating element is full-power output for a time t1, at this time the temperature of the inner core heating element is raised, the resistance is increased, and the required output power is reduced, at this time the peripheral heating is started again to perform heat compensation, to improve the preheating speed. The preheating time t2; the maximum temperature of the inner core heating element in the preheating stage is T1, and the maximum temperature of the peripheral heating element in the preheating stage is T3, T3 < T1.

[0084] Step S3 can include:

[0085] Step B31: the control component controls the first heating element to heat to a first puffing temperature.

[0086] Step B32: the control component controls the second heating element to heat to a second puffing temperature.

[0087] The first puffing temperature is greater than the second puffing temperature.

[0088] Specifically, the control component provides a constant power output to the inner core heating element, and the inner core heating element heats the tobacco, and the inner core temperature in the puffing stage is T2. At the same time, a lower power output is provided to the peripheral heating element, and the temperature of the inner core heating element can be partially conducted to the peripheral heating element through the heat conduction material, and the peripheral temperature in the puffing stage is T4, T2>T4. A heating effect is formed in which the inner core mainly heats and the peripheral assists in heating in the puffing stage. The decay problem of the inner core heating in the later stage is compensated.

[0089] Please refer to Figure 6 In the embodiment 3 provided in the application, the step S2 can include:

[0090] Step C21: the control component controls the first heating element and the second heating element to start at the same time, and the power is evenly distributed for heating.

[0091] Step C22: in the preheating stage, the first heating element heats to a first preheating temperature, and the second heating element heats to a second preheating temperature.

[0092] The first preheating temperature is greater than the second preheating temperature.

[0093] Specifically, in the preheating stage, the inner core heating element and the peripheral heating element start heating at the same time, and each is allocated 50% of the output power, the preheating time t2, the maximum temperature of the inner core heating element in the preheating stage is T1, and the maximum temperature of the peripheral heating element in the preheating stage is T3, T3

[0094] The step S3 can include:

[0095] Step C31: the control component controls the first heating element to heat to a first puffing temperature.

[0096] Step C32: the control component controls the second heating element to heat to a second puffing temperature.

[0097] The first puffing temperature is greater than or equal to the second puffing temperature.

[0098] Specifically, the inner core temperature in the puffing stage is T2, and the peripheral temperature in the puffing stage is T4. By adjusting the power output to the inner core heating element and the peripheral heating element, T2 is slightly greater than T4, or substantially the same. The puffing taste at this time is between embodiment 1 and embodiment 2.

[0099] It should be noted that the user can select a suitable heating mode according to his own smoking habits and preferences, and the heating appliance can interact with the user through the setting of a touch screen, a button or a gear switch, and the application is not limited thereto.

[0100] It should be understood that the size of the sequence number of the above-mentioned processes does not mean the order of execution in various embodiments of the present application, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0101] In this specification, the reference to "one embodiment", "one specific embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment / concrete implementation is included in at least one embodiment / concrete implementation of the present application. Therefore, the phrase "in one embodiment / concrete implementation" appearing in various places in the specification does not necessarily refer to the same embodiment / concrete implementation, but can refer to. In addition, a particular feature, structure or characteristic can be combined in one or more embodiments / concrete implementations in any suitable manner, as a person of ordinary skill in the art can understand from the present disclosure.

[0102] Similarly, it should be understood that in the above description of the exemplary embodiments / concrete implementations of the present application, various features of the present application are sometimes combined in a single embodiment / concrete implementation or its figures and descriptions, the purpose of which is to simplify the disclosure and help understand one or more of the various inventive aspects. However, the description method of the present patent should not be interpreted as reflecting an intention that the claimed invention requires more features than those explicitly stated in each claim, unless there is an explicit contrary indication or a clear technical contradiction or exclusion. On the contrary, the inventive aspect reflected by the claims is in the non-all features of the single aforementioned disclosed embodiment / concrete implementation. Therefore, the claims following the detailed description are hereby expressly incorporated into the present detailed description, and each claim exists independently as a separate embodiment / concrete implementation of the present application.

[0103] In addition, although some embodiments / concrete implementations described herein include but do not include some other features included in other embodiments / concrete implementations, the combination of features of different embodiments / concrete implementations is intended to be within the scope of the present application and forms different embodiments / concrete implementations, which can be understood by those skilled in the art. For example, in the following claims, the embodiments / concrete implementations of any claim can be used in any combination.

[0104] The terms and expressions which have been employed are used as terms of description and not of limitation, and there is no intention that in the use of such terms and expressions of excluding any equivalents of the features shown and described or portions thereof, but it is recognized that various modifications are possible within the scope of the application claimed.

[0105] It is therefore to be understood that, while the application has been described with reference to preferred embodiments, exemplary embodiments and optional features, various modifications which are apparent to those skilled in the art are intended to be within the scope of the application, which is to be limited only by the appended claims.

[0106] The specific embodiments given to the application are illustrative of useful embodiments of the application and it will be apparent to those skilled in the art that various omissions and substitutions are intended as is obvious in the light of the disclosure. The specific embodiments are not to be taken advantage of in defining the scope of the application, but are for purposes of exemplification.

[0107] The foregoing description of specific embodiments will so fully reveal the general nature of the application that others can, by applying knowledge of those art within its purview, readily modify and / or adapt for various applications such specific embodiments, without undue experimentation, without departing from the general concept of the present application.

[0108] Therefore, such modifications and variations are intended to be included within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that all terminology revealed from the description and claims is to be interpreted in accordance with the description and examples above.

[0109] Furthermore, the scope of the application should not be limited by any of the specific exemplary embodiments, but should be defined solely by the appended claims and equivalents thereof.

Claims

1. A method of controlling heating of an aerosol generating device, the aerosol generating device comprising: A heating chamber, a power supply, a heating assembly for heating an aerosol-forming substrate housed in the heating chamber when in operation to generate an aerosol, and a control assembly for controlling the heating assembly to heat, characterized in that the heating assembly comprises a first heating element inside the heating chamber and a second heating element surrounding the inner wall of the heating chamber, and the heating control method comprises: Step S1: the control assembly obtains a heating instruction; Step S2: the control assembly controls the first heating element and the second heating element to heat to a first preheating temperature and a second preheating temperature respectively in a preheating stage according to the heating instruction; Step S3: the control assembly controls the first heating element and the second heating element to heat to a first puffing temperature and a second puffing temperature respectively in a puffing stage.

2. The heating control method according to claim 1, characterized by, The first preheating temperature is greater than the second preheating temperature, and the step S2 comprises: Step A21: the control assembly controls the second heating element to heat to the second preheating temperature at full power; Step A22: when the second heating element heats for a preset time, the control assembly starts the first heating element and controls the first heating element to heat to the first preheating temperature.

3. The heating control method according to claim 2, wherein The first puffing temperature is less than the second puffing temperature, and the step S3 comprises: Step A31: the control assembly controls the second heating element to heat to the second puffing temperature; Step A32: the control assembly controls the first heating element to heat to the first puffing temperature.

4. The heating control method of claim 1, wherein The first preheating temperature is greater than the second preheating temperature, and the step S2 comprises: Step B21: the control assembly controls the first heating element to heat to the first preheating temperature at full power; Step B22: when the first heating element heats for a preset time, the control assembly starts the second heating element and controls the second heating element to heat to the second preheating temperature.

5. The heating control method according to claim 4, wherein The first puffing temperature is greater than the second puffing temperature, and the step S3 comprises: Step B31: the control assembly controls the first heating element to heat to the first puffing temperature; Step B32: the control assembly controls the second heating element to heat to the second puffing temperature.

6. The heating control method of claim 1, wherein, The first preheating temperature is greater than the second preheating temperature, and the step S2 comprises: Step C21: the control assembly controls the first heating element and the second heating element to start at the same time and average power distribution to heat; Step C22: in the preheating stage, the first heating element heats to the first preheating temperature, and the second heating element heats to the second preheating temperature.

7. The heating control method according to claim 6, wherein The first puffing temperature is greater than or equal to the second puffing temperature, and the step S3 comprises: Step C31: the control assembly controls the first heating element to heat to the first puffing temperature; Step C32: the control assembly controls the second heating element to heat to the second puffing temperature.

8. An aerosol-generating device comprising: A heating chamber, a power supply, a heating assembly for heating an aerosol-forming substrate housed in the heating chamber when in operation to generate an aerosol, and a control assembly for controlling the heating assembly to heat, characterised in that the heating assembly comprises a first heating element within the heating chamber and a second heating element surrounding an inner wall of the heating chamber, The control assembly is configured to obtain a heating instruction; According to the heating instruction, the first heating element and the second heating element are respectively controlled to heat to a first preheating temperature and a second preheating temperature in a preheating stage; The first heating element and the second heating element are respectively controlled to heat to a first puffing temperature and a second puffing temperature in a puffing stage.

9. The aerosol-generating device of claim 8, wherein, The heating assembly further comprises a fixing seat, the first heating element is fixed in the middle of the fixing seat, and the second heating element is fixed outside the fixing seat. 10.The aerosol-generating device of claim 8, wherein, The first heating element is a conical structure, and the conical surface of the first heating element is inserted into the inside of the aerosol-forming substrate for heating.

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