Aerosol generating device, control method thereof, and aerosol generation method

Abstract

The present invention relates to an aerosol generating device (100), a control method thereof, and an aerosol generating method. The control method includes: in a first partial period of the control period of the heater (11), controlling the power supply so as to supply heating power only to the first heating region, thereby raising the temperature of the first heating region from an initial temperature to a first predetermined target temperature; and in the remaining partial period of the control period of the heater (11), controlling the power supply so as to supply heating power to the first heating region and the second heating region simultaneously, wherein the duration of the first partial period is 10 s to 30 s. By controlling to start heating by the first heating region and not to start heating by the second heating region in the first partial period of the control period of the heater (11), and controlling to start heating by the first heating region and the second heating region simultaneously in the remaining partial period, the preheating time of the aerosol forming substrate is reduced, the problem that the user feels likely to get burned in the mouth when sucking the aerosol is avoided, and the user's sucking and user experience are improved.

Description

Technical Field

[0001] (Cross - reference to related applications) This application claims the priority of a Chinese patent application with the application number 202210872754.0 and the invention title "Aerosol Generator, Its Control Method, and Aerosol Generation Method", which was filed with the Chinese Patent Office on July 21, 2022, and all of its contents are incorporated herein by reference.

[0002] This application relates to the technical field of electronic atomization, and particularly to an aerosol generator, its control method, and an aerosol generation method.

Background Art

[0003] In a conventional aerosol generator, mainly, a far - infrared coating and a conductive coating are applied to the outer surface of a substrate. The far - infrared rays emitted from the energized far - infrared coating penetrate the substrate, thereby heating the aerosol - forming substrate inside the substrate. Since far - infrared rays have strong permeability and can penetrate the outside of the aerosol - forming substrate and enter the inside, the heating of the aerosol - forming substrate is uniform.

[0004] Such an aerosol generator has a problem that the pre - heating time of the aerosol - forming substrate is long, and when the user sucks the aerosol, it feels like the mouth will be scalded, which deteriorates the user experience of the user.

Summary of the Invention

[0005] This application provides an aerosol generator, its control method, and an aerosol generation method, aiming to solve the problems existing in the conventional aerosol generator, such as long pre - heating time and the feeling of scalding the mouth during suction.

[0006] In one aspect, this application is an aerosol generator configured to heat an aerosol - forming substrate including a first - part aerosol - generating substrate and a second - part aerosol - generating substrate to generate an aerosol, a power source, A heater including a first heating region for heating the aerosol-forming substrate of the first portion and a second heating region for heating the aerosol-forming substrate of the second portion, In a first sub-period of the control period of the heater, by controlling the power supply to supply heating power only to the first heating region, the temperature of the first heating region is raised from an initial temperature to a first predetermined target temperature, A controller configured to control the power supply to simultaneously supply heating power to the first heating region and the second heating region in the remaining sub-period of the control period of the heater, Provided is an aerosol generating device, wherein the duration of the first sub-period is 10 s to 30 s.

[0007] In another aspect, the present application is directed to a method of controlling an aerosol generating device configured to heat an aerosol-forming substrate including a first portion of an aerosol-generating substrate and a second portion of the aerosol-generating substrate to generate an aerosol, the aerosol generating device including a power supply, a first heating region for heating the first portion of the aerosol-forming substrate, and a second heating region for heating the second portion of the aerosol-forming substrate, the method comprising: In a first sub-period of the control period of the heater, controlling the power supply to supply heating power only to the first heating region to raise the temperature of the first heating region from an initial temperature to a first predetermined target temperature; In the remaining sub-period of the control period of the heater, controlling the power supply to simultaneously supply heating power to the first heating region and the second heating region, Provided is a method of controlling an aerosol generating device, wherein the duration of the first sub-period is 10 s to 30 s.

[0008] In another aspect, the present application is directed to a method of generating an aerosol from an aerosol-generating substrate including a first portion of an aerosol-generating substrate and a second portion of the aerosol-generating substrate, the method comprising generating an aerosol by an aerosol generating device including a first heating region for heating the first portion of the aerosol-forming substrate and a second heating region for heating the second portion of the aerosol-forming substrate, In the first sub-period of the control period of the heater, start heating by the first heating region, raise the temperature from the initial temperature to the first predetermined target temperature, and do not start heating by the second heating region; In the remaining sub-period of the control period of the heater, start heating by the first heating region and the second heating region simultaneously, Further provide a method in which the duration of the first sub-period is 10 s to 30 s.

[0009] The aerosol generator, its control method, and the aerosol generation method provided in this application control to start only heating by the first heating region and not start heating by the second heating region in the first sub-period of the control period of the heater, and control to start heating by the first heating region and the second heating region simultaneously in the remaining sub-period, thereby reducing the preheating time of the aerosol-forming substrate, avoiding the problem that the user is likely to get burned when sucking the aerosol, and improving the user's sucking and user experience.

Brief Description of the Drawings

[0010] One or more embodiments are exemplarily described with corresponding drawings. These exemplary descriptions do not limit the embodiments. Elements with the same reference numerals in the drawings indicate the same elements. Unless otherwise specified, the drawings do not limit the scale.

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Embodiments for Carrying Out the Invention

[0011] To facilitate the understanding of the present application, the present application will be described in more detail below with reference to the drawings and specific embodiments. It should be noted that when an element is described as being "fixed" to another element, it may be directly located on the other element or there may be one or more intervening elements therebetween. When an element is described as being "connected" to another element, it may be directly connected to the other element or there may be one or more intervening elements therebetween. The terms "upper", "lower", "left", "right", "inner", "outer" and similar descriptions used in this specification are for illustrative purposes only.

[0012] Unless otherwise defined, all technical terms and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field of the present application. In this specification, the terms used in the description of the present application are only for the purpose of describing specific embodiments and do not limit the present application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0013] Figs. 1 to 2 show an aerosol generating device 100 provided in an embodiment of the present application. The aerosol generating device 100 includes a housing assembly 6 and a heater 11. The heater 11 is provided within the housing assembly 6. The heater 11 can generate a smokable aerosol by emitting infrared rays to heat an aerosol-forming substrate.

[0014] The housing assembly 6 includes an outer housing 61, a fixed housing 62, a base, and a bottom cover 64. The fixed housing 62 and the base are both fixed within the outer housing 61. Here, the base is used to fix the heater 11 and is provided within the fixed housing 62. The bottom cover 64 is provided at the distal end 9 of the outer housing 61 and covers the outer housing 61. The fixed housing 62 is provided with an insertion port through which the aerosol-forming substrate can be removably received or inserted into the heater 11.

[0015] The base includes a base 15 fitted to the upper end of the heater 11 and a base 13 fitted to the lower end of the heater 11. Both the base 15 and the base 13 are provided within the fixed housing 62. An intake pipe 641 protrudes from the bottom cover 64. One end of the base 13 opposite to the base 15 is connected to the intake pipe 641. The base 15, the heater 11, the base 13, and the intake pipe 641 are coaxially provided. Moreover, the space between the heater 11 and the base 15, and the base 16 is sealed by a sealing material, and the base 13 and the intake pipe 641 are also sealed. The intake pipe 641 communicates with the outside air so that the user can inhale smoothly when smoking.

[0016] The aerosol generating device 100 further includes a circuit board 3 and a battery cell 7. The fixed housing 62 includes a fixedly connected front housing 621 and a rear housing 622. Both the circuit board 3 and the battery cell 7 are provided within the fixed housing 62. The battery cell 7 is electrically connected to the circuit board 3. The button 4 protrudes from the outer housing 61. By pressing the button 4, it is possible to achieve energization or non-energization of the heater 11. The circuit board 3 is further connected to a charging interface 31 exposed on the bottom cover 64. The user can charge or upgrade the aerosol generating device 100 through the charging interface 31 to ensure the continuous use of the aerosol generating device 100.

[0017] The aerosol generating device 100 further includes a heat insulation tube 17. The heat insulation tube 17 is provided within the fixed housing 62 and around the heater 11, which can avoid the user feeling heat due to a large amount of heat being transmitted to the outer housing 61. The heat insulation tube includes a heat insulation material that can be a heat insulation gel, an aerogel, an aerogel felt, asbestos, aluminum silicate, calcium silicate, diatomaceous earth, zirconium oxide, etc. The heat insulation tube may be a vacuum heat insulation tube. In order to reflect the infrared rays radiated from the heater 11 towards the direction of the aerosol forming substrate and improve the heating efficiency, an infrared ray reflecting coating may be further formed within the heat insulation tube 17.

[0018] The aerosol generating device 100 further includes a temperature sensor 2 such as an NTC temperature sensor. The temperature sensor 2 is used to detect the real-time temperature of the heater 11 and transmit the detected real-time temperature to the circuit board 3. The circuit board 3 adjusts the magnitude of the current flowing through the heater 11 based on the real-time temperature.

[0019] FIGS. 3 to 4 are heaters provided in the embodiments of the present application. The heater 11 includes the following.

[0020] The substrate 110 may be made of a high-temperature resistant and transparent material such as quartz glass, ceramics or mica, or may be made of other materials having a high infrared transmittance, for example, a high-temperature resistant material having an infrared transmittance of 95% or more, and is not specifically limited here.

[0021] The substrate 110 is substantially tubular, and preferably adopts a circular tubular shape. The hollow portion inside the substrate 110 defines or forms a cavity for receiving the aerosol-forming substrate. The inner diameter of the substrate 110 is 7 mm to 14 mm, 7 mm to 12 mm, or 7 mm to 10 mm.

[0022] The aerosol-forming substrate is a substrate capable of releasing a volatile compound capable of forming an aerosol. Such a volatile compound can be released by heating the aerosol-forming substrate. The aerosol-forming substrate may be a solid, or a liquid, or may contain a solid component and a liquid component. The aerosol-forming substrate can be loaded onto a carrier or support by adsorption, coating, dipping or other methods. For convenience, the aerosol-forming substrate may be part of an aerosol-generating product.

[0023] The aerosol-forming substrate may contain nicotine. The aerosol-forming substrate may contain tobacco such as a tobacco-containing material containing a volatile tobacco flavor compound, and when heated, the volatile tobacco flavor compound is released from the aerosol-forming substrate. The aerosol-forming substrate may contain at least one aerosol-forming agent which can be any suitable known compound or mixture of compounds, and during use, the compound or mixture of compounds contributes to the formation of a dense and stable aerosol and is substantially resistant to thermal decomposition at the operating temperature of the aerosol-generating system. Suitable aerosol-forming agents are well known in the art and include polyols such as triethylene glycol, 1,3-butanediol and glycerol, esters of polyols such as glycerol mono-, di- or triacetate, and fatty acid esters of monovalent, divalent or polyvalent carboxylic acids such as dimethyl dodecanedioate and dimethyl tetradecanedioate, but are not limited thereto.

[0024] The infrared electrothermal coating 111 is formed on the surface of the substrate 110. The infrared electrothermal coating 111 may be formed on the outer surface of the substrate 110 or on the inner surface of the substrate 110.

[0025] The infrared electrothermal coating 111 receives power and generates heat, and further emits infrared rays of a certain wavelength, for example, far-infrared rays of 8 μm to 15 μm. When the wavelength of the infrared rays coincides with the absorption wavelength of the aerosol-forming substrate, the energy of the infrared rays is easily absorbed by the aerosol-forming substrate. In this example, the wavelength of the infrared rays is not limited and may be infrared rays of 0.75 μm to 1000 μm, preferably far-infrared rays of 1.5 μm to 400 μm.

[0026] In this example, the infrared electrothermal coating 111 is formed on the outer surface of the substrate 110 and includes two infrared electrothermal coatings provided at intervals as shown by the infrared electrothermal coating 111a and the infrared electrothermal coating 111b in the figure. Here, the infrared electrothermal coating 111a is closer to the mouth end 8 of the aerosol generator 100 than the infrared electrothermal coating 111b.

[0027] The infrared electrothermal coating 111a is provided at a distance from the upper end of the substrate 110, and the distance is 0.2 mm to 1 mm, which is advantageous for manufacturing and production. The distance between the infrared electrothermal coating 111a and the infrared electrothermal coating 111b is 0.2 mm to 1 mm. The infrared electrothermal coating 111b is also provided at a distance from the lower end of the substrate 110, and the distance is 1 mm to 4 mm, which is advantageous for the arrangement of the conductive electrodes and avoids the temperature at the lower end of the substrate 110 being too high. It should be noted that, when viewed from the flow direction of the aerosol, the upper end of the substrate 110 is located downstream of the lower end of the substrate 110. The lengths of the infrared electrothermal coating 111a and the infrared electrothermal coating 111b extending in the axial direction may be the same or different.

[0028] The conductive element includes conductive electrodes 112a, 112b, 112c, connection electrodes 112d, and connection electrodes 112e that are provided on the surface of the substrate 110 at intervals from each other.

[0029] The conductive electrode 112a includes a connecting portion 112a1 that extends in the circumferential direction of the substrate 110, and a conductive portion 112a2 that extends in the axial direction from the connecting portion 112a1 toward the upper end of the substrate 110. The connecting portion 112a1 is arc-shaped, is provided away from the infrared electrothermal coating 111b, and is provided between the infrared electrothermal coating 111b and the lower end of the substrate 110. A lead wire may be welded to the connecting portion 112a1 to be electrically connected to an external power source of the heater 11 such as the voltage after conversion of the battery cell 7 or the battery cell 7, or may be electrically connected to the power source via another electrical connector. The conductive portion 112a2 is strip-shaped, and the length thereof extending in the axial direction is larger than the length of the infrared electrothermal coating 111b extending in the axial direction. The upper end of the conductive portion 112a2 is flush with the upper end of the infrared electrothermal coating 111b, and the conductive portion 112a2 maintains contact with the infrared electrothermal coating 111b to form an electrical connection.

[0030] The conductive electrode 112b is strip-shaped, and the length thereof extending in the axial direction is the same as the length of the infrared electrothermal coating 111a extending in the axial direction. The conductive electrode 112b maintains contact with the infrared electrothermal coating 111a to form an electrical connection.

[0031] The structure of the conductive electrode 112c is the same as that of the conductive electrode 112a. The connecting portion 112c1 of the conductive electrode 112c is provided between the infrared electrothermal coating 111b and the lower end of the substrate 110. The conductive portion 112c2 is strip-shaped, but the length thereof extending in the axial direction is larger than the sum of the lengths of the infrared electrothermal coating 111a and the infrared electrothermal coating 111b extending in the axial direction. The upper end of the conductive portion 112c2 is flush with the upper end of the infrared electrothermal coating 111a. The conductive portion 112c2 maintains contact with both the infrared electrothermal coating 111a and the infrared electrothermal coating 111b to form an electrical connection.

[0032] Both the connection electrode 112d and the connection electrode e are strip-shaped and are provided on the infrared electrothermal coating 111b. The length extending in the axial direction of the connection electrode 112d and the connection electrode e is the same as the length extending in the axial direction of the infrared electrothermal coating 111b.

[0033] The connection electrode 112d is provided between the conductive electrode 112a and the conductive electrode 112c. The connection electrode 112d separates the infrared electrothermal coating between the conductive electrode 112a and the conductive electrode 112c into two sub-infrared electrothermal coatings (B1, B2) connected in series between the conductive electrode 112a and the conductive electrode 112c. The sub-infrared electrothermal coating B1 and the sub-infrared electrothermal coating B2 are distributed in the circumferential direction of the substrate 110, and the equivalent resistance of the sub-infrared electrothermal coating B1 and the equivalent resistance of the sub-infrared electrothermal coating B2 may be the same or different.

[0034] The connection electrode 112e is also provided between the conductive electrode 112a and the conductive electrode 112c. The connection electrode 112e separates the infrared electrothermal coating between the conductive electrode 112a and the conductive electrode 112c into two sub-infrared electrothermal coatings (B3, B4) connected in series between the conductive electrode 112a and the conductive electrode 112c. The sub-infrared electrothermal coating B3 and the sub-infrared electrothermal coating B4 are distributed in the circumferential direction of the substrate 110, and the equivalent resistance of the sub-infrared electrothermal coating B3 and the equivalent resistance of the sub-infrared electrothermal coating B4 may be the same or different.

[0035] With the provided connection electrode 112d and connection electrode 112e, the overall resistance value of the infrared electrothermal coating 111b can be reduced.

[0036] It should be noted that, if necessary, a plurality of connection electrodes 112d and / or connection electrodes 112e may be provided between the conductive electrode 112a and the conductive electrode 112c, and the infrared electrothermal coating may be separated into a plurality of sub-infrared electrothermal coatings connected in series between the conductive electrode 112a and the conductive electrode 112c. For example, two connection electrodes 112d may separate the conductive electrode 112a and the conductive electrode 112c into three sub-infrared electrothermal coatings connected in series. The equivalent resistances of the three sub-infrared electrothermal coatings may be the same, different, or two of them may be the same.

[0037] It should be further noted that, in order to reduce the overall resistance value of the infrared electrothermal coating 111a, a plurality of connection electrodes 112d and / or connection electrodes 112e may be provided between the conductive electrode 112b and the conductive electrode 112c if necessary.

[0038] It is preferable to adopt a continuous conductive coating for the conductive electrode 112a, the conductive electrode 112b, the conductive electrode 112c, the connection electrode 112d, and the connection electrode 112e. The conductive coating may be a metal coating that may include silver, gold, palladium, platinum, copper, nickel, molybdenum, tungsten, niobium, or the above metal alloy materials. The widths of the connection electrode 112d and the connection electrode 112e are in the range of 0.5 mm to 3 mm, or 0.5 mm to 2.5 mm, and in specific examples, they may be 1 mm or 2 mm.

[0039] In other examples, the connection electrode 112d and the connection electrode 112e may adopt a discontinuous conductive coating such as a conductive coating having a mesh shown in FIG. 5.

[0040] It should be noted that in the manufacturing process of the heater 11, the connection electrode 112d and / or the connection electrode 112e may be provided between the substrate 110 and the infrared electrothermal coating 111b in a direction perpendicular to the surface of the substrate 110, or the infrared electrothermal coating 111b may be provided between the substrate 110 and the connection electrode. The conductive portions 112a2 of the conductive electrode 112a and the conductive portions 112c2 of the conductive electrode 112c can also be provided in this way.

[0041] By providing the conductive elements in FIG. 3, the infrared electrothermal coating 111a and the infrared electrothermal coating 111b can be controlled independently. Specifically, the power supply can be controlled to supply heating power to the infrared electrothermal coating 111a and / or the infrared electrothermal coating 111b. For example, after controlling the power supply to supply heating power to the infrared electrothermal coating 111a to heat the upper half of the aerosol generating product (the portion corresponding to the area of the infrared electrothermal coating 111a), the power supply can be controlled to supply heating power to the infrared electrothermal coating 111b to heat the lower half of the aerosol generating product (the portion corresponding to the area of the infrared electrothermal coating 111b). The reverse is also possible.

[0042] Alternatively, after controlling the power supply to supply heating power to the infrared electrothermal coating 111a to heat the upper half of the aerosol generating product, the power supply can be controlled to supply heating power to the infrared electrothermal coating 111a and the infrared electrothermal coating 111b simultaneously to heat the entire aerosol generating product.

[0043] Alternatively, after controlling the power supply to supply heating power to the infrared electrothermal coating 111b to heat the lower half of the aerosol generating product, the power supply can be controlled to supply heating power to the infrared electrothermal coating 111a and the infrared electrothermal coating 111b simultaneously to heat the entire aerosol generating product.

[0044] When controlling the heating of the infrared electrothermal coating 111a, for example, the conductive electrode 112b is electrically connected to the positive electrode of the power supply, and the connecting part 112c1 is electrically connected to the negative electrode of the power supply. In this way, the current flows in from the conductive electrode 112b, passes through the sub-infrared electrothermal coating A1 or the sub-infrared electrothermal coating A2 along the circumferential direction of the substrate 110, and then flows out from the conductive part 112c2.

[0045] When controlling the heating of the infrared electrothermal coating 111b, for example, the connecting part 112a1 is electrically connected to the positive electrode of the battery cell 7, and the connecting part 112c1 is electrically connected to the negative electrode of the battery cell 7. The current flows in from the conductive part 112a2, passes through the sub-infrared electrothermal coating B1 and the sub-infrared electrothermal coating B2 sequentially, and at the same time, after passing through the sub-infrared electrothermal coating B4 and the sub-infrared electrothermal coating B3 sequentially, it flows out from the conductive part 112c2. The connection electrodes 112d and 112e are not connected to an external power supply or circuit of the heater 11, that is, they are floating in the air, and the current cannot flow out from the conductive part 112b2 or the conductive part 112a2 after flowing directly in from the connection electrode 112c. Due to the presence of the connection electrodes 112d and 112e, the overall resistance value of the infrared electrothermal coating 111b can be reduced.

[0046] Also, as shown in FIG. 3, in the area of the infrared electrothermal coating 111a, there is a mark 113 for positioning when assembling the temperature sensor 2. The temperature sensor 2 detects the real-time temperature in the area of the infrared electrothermal coating 111a and transmits the detected real-time temperature to the circuit board 3. The circuit board 3 can control the temperature of the infrared electrothermal coating 111a and / or the infrared electrothermal coating 111b based on the real-time temperature (described below).

[0047] It should be noted that the heater 11 shown in FIGS. 3 to 5 has various modifications of embodiments. For example, the conductive electrode 112c may be replaced with two electrodes similar to the conductive electrode 112a and the conductive electrode 112b, or all of the conductive electrode 112a, the conductive electrode 112b, and the conductive electrode 112c may be in an annular electrode structure, and the infrared electrothermal coating 111 may be separated vertically into two infrared electrothermal coatings, and one or more annular structure connection electrodes may be provided on the lower infrared electrothermal coating, or all of the conductive electrode 112a, the conductive electrode 112b, and the conductive electrode 112c may be in a spiral electrode structure, and the connection electrode may also be in a spiral structure.

[0048] FIGS. 6 to 7 are another heater provided in the embodiment of the present application.

[0049] Different from the example of FIGS. 3 to 4, for the conductive portion 112a2 of the conductive electrode 112a, the length extending in the axial direction thereof is greater than the sum of the lengths extending in the axial direction of the infrared electrothermal coating 111a and the infrared electrothermal coating 111b, and the upper end of the conductive portion 112c2 is flush with the upper end of the infrared electrothermal coating 111a. The conductive electrode 112b and the conductive electrode 112d are both provided between the conductive portion 112a2 of the conductive electrode 112a and the conductive portion 112c2 of the conductive electrode 112c, and are both provided in the region of the infrared electrothermal coating 111a.

[0050] Different from the example of FIGS. 3 to 4, the infrared electrothermal coating 111a can be controlled independently, but the infrared electrothermal coating 111b cannot be controlled independently.

[0051] When controlling the heating of the heater 11, after controlling the power supply to supply heating power to the infrared electrothermal coating 111a by the conductive electrode 112b and the conductive electrode 112d, the power supply is controlled to supply heating power to the infrared electrothermal coating 111a and the infrared electrothermal coating 111b simultaneously by the conductive electrode 112a and the conductive electrode 112c.

[0052] When energizing the conductive electrode 112b and the conductive electrode 112d, the conductive part (the conductive part 112a2 of the conductive electrode 112a and the conductive part 112c2 of the conductive electrode 112c) located between the conductive electrode 112b and the conductive electrode 112d is not energized. This conductive part corresponds to the connection electrode in the examples of FIGS. 3 to 4. Furthermore, the overall resistance value of the infrared electrothermal coating 111a is reduced, and the infrared electrothermal coating 111a is rapidly heated, thereby quickly heating the upper half of the aerosol generating product and achieving the purpose of quickly generating aerosol.

[0053] When energizing the conductive electrode 112a and the conductive electrode 112c, the conductive electrodes 112b and 112d located between the conductive electrode 112a and the conductive electrode 112c are not energized. These conductive electrodes 112b and 112d also correspond to the connection electrodes in the examples of FIGS. 3 to 4. Furthermore, the overall resistance value of the infrared electrothermal coating 111a is reduced. In this case, since the infrared electrothermal coating 111a and the infrared electrothermal coating 111b are heated simultaneously, or the entire infrared electrothermal coating 111 is heated, due to the presence of the conductive electrodes 112b and 112d, the overall resistance value of the infrared electrothermal coating 111a is reduced, the temperature of the region of the infrared electrothermal coating 111a is increased, and the temperature field of the entire region of the infrared electrothermal coating 111 is changed.

[0054] Similar to the examples of FIGS. 3 to 4, the temperature sensor 2 can detect the real-time temperature of the region of the infrared electrothermal coating 111a and transmit the detected real-time temperature to the circuit board 3. The circuit board 3 can control the temperature of the infrared electrothermal coating 111a and / or the infrared electrothermal coating 111b based on the real-time temperature.

[0055] FIG. 8 is a schematic diagram of the control curve of the heater provided in the embodiment of the present application.

[0056] In FIG. 8, the horizontal coordinate t represents time, 0 to t5 is the control period of the area of the infrared electrothermal coating 111a, the vertical coordinate T represents the temperature of the area of the infrared electrothermal coating 111a, and the temperature value can be detected by the temperature sensor 2 and fed back. Over the entire control period of the area of the infrared electrothermal coating 111a, the heating power supplied by the power supply is controlled based on the temperature information of the area of the infrared electrothermal coating 111a.

[0057] Hereinafter, the heater 11 shown in FIGS. 3 to 4 will be described as an example.

[0058] First, in the period from 0 to t1, the power supply is controlled to supply heating power to the infrared electrothermal coating 111a, so that the temperature of the area of the infrared electrothermal coating 111a is raised from the initial temperature to the first predetermined target temperature T1.

[0059] The initial temperature may be the ambient temperature or a temperature higher than the ambient temperature.

[0060] The first predetermined target temperature T1 is in the range of 230°C to 300°C, preferably in the range of 240°C to 300°C, more preferably in the range of 240°C to 290°C, and even more preferably in the range of 240°C to 280°C. In a specific example, it may be set to 250°C, 260°C, 270°C, etc.

[0061] Generally, within the duration of this period, the power supply is controlled to supply the infrared electrothermal coating 111a with the maximum heating power, for example, a heating power of 20w to 40w, so that the temperature of the area of the infrared electrothermal coating 111a can be rapidly raised to the first predetermined target temperature T1.

[0062] Generally, the start time of the period from 0 to t1 is a predetermined time after the controller 32 receives the start signal (including the time when the start signal is received and a specific time after the start signal is received), and at this time, the controller 32 starts the control operation. The start signal may be a signal generated by the airflow sensor or a signal generated by the key switch.

[0063] Second, during the period from t1 to t2, by controlling the power supply to supply heating power to the infrared electrothermal coating 111a, the temperature of the area of the infrared electrothermal coating 111a is maintained at a first predetermined target temperature T1.

[0064] Generally, within the duration of this period, by controlling the power supply to supply heating power to the infrared electrothermal coating 111a with a relatively small heating power, for example, about 5w to 15w, the temperature of the area of the infrared electrothermal coating 111a is maintained at the first predetermined target temperature T1. Maintaining the temperature at the first predetermined target temperature T1 means that the temperature of the area of the infrared electrothermal coating 111a may fluctuate up and down at the target temperature T1, or the temperature of the area of the infrared electrothermal coating 111a is below the target temperature T1.

[0065] The period from 0 to t2 may also be referred to as a preheating stage or a preheating period, and the duration of this period is in the range of 10s to 30s (including the end values), for example, it may be 12s, 15s, 20s, 25s, 30s, etc. At time t2, notification information can be generated to notify the user that the aerosol can be inhaled, and the notification methods include, but are not limited to, sound, light, vibration, etc. The period from t2 to t5 may also be referred to as an inhalation period, and during this period, the user can inhale the aerosol generated from the aerosol generation substrate.

[0066] During the period from 0 to t2, the power supply does not supply heating power to the infrared electrothermal coating 111b, that is, only the heating by the infrared electrothermal coating 111a is started, and the heating by the infrared electrothermal coating 111b is not started. In other words, the aerosol generating product heated at this time is only the first part of the product corresponding to the infrared electrothermal coating 111a. For the whole aerosol generating product, the heated part is small. In this way, it helps to quickly generate the inhalable aerosol, while the water content in the heated product also relatively decreases, avoiding the problem that the user feels likely to get scalded in the mouth when inhaling the aerosol (especially when inhaling the first aerosol).

[0067] Due to the thermal conductivity of the substrate 110, products such as the product, it is understandable that the temperature of both the region of the infrared electrothermal coating 111b and the corresponding second part of the product gradually increases. The product of the first part corresponding to the infrared electrothermal coating 111a and the product of the second part corresponding to the region of the infrared electrothermal coating 111b may contain substantially the same components or different components. The two parts of the product are not physically isolated, that is to say, there is heat transfer between the two parts of the product.

[0068] It should be noted that in other examples, there may be no so-called holding or maintaining period during the period from t1 to t2. In this case, during the period from 0 to t2, the region of the infrared electrothermal coating 111a can be controlled to rise from the initial temperature to the first predetermined target temperature T1 with a relatively gentle rising trend (or a small curve gradient).

[0069] Third, during the period from t2 to t3, by controlling the power supply so as to simultaneously supply heating power to the infrared electrothermal coating 111a and the infrared electrothermal coating 111b, the region of the infrared electrothermal coating 111a is maintained at the first predetermined target temperature T1 with the assigned heating power.

[0070] The duration of the period from t2 to t3 is from 30 s to 50 s. In a specific example, it may be 40 s.

[0071] During the duration of this period, the heating power supplied to the infrared electrothermal coating 111 by the power source is allocated to two heating regions, namely the infrared electrothermal coating 111a and the infrared electrothermal coating 111b. Since the infrared electrothermal coating 111a and the infrared electrothermal coating 111b correspond to two heating regions that operate in conjunction, the region with a relatively small resistance value obtains a relatively large heating power, and vice versa, the region with a relatively small heating power is obtained. When the resistance value R111a of the infrared electrothermal coating 111a and the resistance value R111b of the infrared electrothermal coating 111b are 3:2, and the heating power supplied by the power source is 10w, the heating power allocated to the region of the infrared electrothermal coating 111a is 4w, and the heating power allocated to the region of the infrared electrothermal coating 111b is 6w.

[0072] Similar to the period from t1 to t2, within the period from t2 to t3, the power source may be controlled to supply the infrared electrothermal coating 111 with a relatively small heating power, for example, a heating power of about 5w to 15w. Thereby, the temperature of the region of the infrared electrothermal coating 111a can be maintained at the first predetermined target temperature T1 with the allocated heating power.

[0073] Different from the period from 0 to t2, within the period from t2 to t3, the temperature of the region of the infrared electrothermal coating 111b can rise rapidly due to the allocated heating power (even if the power is small) and the temperature difference from the region of the infrared electrothermal coating 111a.

[0074] IV. During the period from t3 to t4, by controlling the power source to supply heating power to the infrared electrothermal coating 111a and the infrared electrothermal coating 111b simultaneously, the temperature of the region of the infrared electrothermal coating 111a is decreased from the first predetermined target temperature T1 to the second predetermined target temperature T2 with the allocated heating power and maintained at the second predetermined target temperature T2.

[0075] The duration of the period from t3 to t4 is within 30s to 50s. In a specific example, it may be 40s.

[0076] Generally, the difference between the first predetermined target temperature T1 and the second predetermined target temperature T2 is 10°C to 30°C. In a specific example, it may be 20°C.

[0077] Similar to the t2 - t3 period, within the t3 - t4 period, the heating power supplied by the power source is allocated to two regions: the infrared electrothermal coating 111a and the infrared electrothermal coating 111b.

[0078] Similar to the t2 - t3 period, within the t3 - t4 period, the power source may be controlled to supply the infrared electrothermal coating 111b with a relatively small heating power, for example, a heating power of about 5w - 15w. Thereby, the temperature of the region of the infrared electrothermal coating 111a can be reduced from the first predetermined target temperature T1 to the second predetermined target temperature T2 and maintained at the second predetermined target temperature T2.

[0079] Different from the t2 - t3 period, within the t3 - t4 period, the temperature change of the region of the infrared electrothermal coating 111b is almost the same as that of the region of the infrared electrothermal coating 111a due to the allocated heating power and the temperature difference from the region of the infrared electrothermal coating 111a.

[0080] V. During the t4 - t5 period, by controlling the power source to simultaneously supply heating power to the infrared electrothermal coating 111a and the infrared electrothermal coating 111b, the temperature of the region of the infrared electrothermal coating 111a is reduced from the second predetermined target temperature T2 to the third predetermined target temperature T3 and maintained at the third predetermined target temperature T3 with the allocated heating power.

[0081] The duration of the t4 - t5 period is 30s - 200s.

[0082] Generally, the difference between the second predetermined target temperature T2 and the third predetermined target temperature T3 is 10°C to 20°C. In a specific example, it may be 15°C.

[0083] Similar to the t3 - t4 period, within the t4 - t5 period, the heating power supplied by the power source is allocated to the infrared electrothermal coating 111a region and the infrared electrothermal coating 111b region.

[0084] Similar to the t3 - t4 period, within the t4 - t5 period, the power source may be controlled to supply the infrared electrothermal coating 111 with a relatively small heating power, for example, a heating power of about 5w - 15w. Thereby, the temperature of the region of the infrared electrothermal coating 111a can be decreased from the second predetermined target temperature T2 to the third predetermined target temperature T3 and maintained at the third predetermined target temperature T3 with the allocated heating power.

[0085] Similar to the t3 - t4 period, within the t4 - t5 period, the temperature change of the region of the infrared electrothermal coating 111b is almost the same as that of the region of the infrared electrothermal coating 111a due to the allocated heating power and the temperature difference from the infrared electrothermal coating 111a region.

[0086] It should be noted that within the period from t4 to t5, the temperature difference between the region of the infrared electrothermal coating 111a and the region of the infrared electrothermal coating 111b is determined by their resistance value relationships. That is, when the resistance values of both are the same, there may be no temperature difference between them. When the resistance values of both are different, the heating power assigned to the region with a relatively smaller resistance value is relatively larger, and the temperature of the region with a smaller resistance value is higher than the temperature of the region with a larger resistance value. Based on this characteristic, in the actual operation process, the connecting electrodes 112d and 112e are used to reduce the overall resistance value of the infrared electrothermal coating 111b. On the one hand, this helps the infrared electrothermal coating 111b to obtain a large heating power during the period from t4 to t5, making the temperature of the infrared electrothermal coating 111b higher than the temperature of the infrared electrothermal coating 111a. Since there is less aerosol generated during the period from t4 to t5, the problem of the user's suction experience being reduced is avoided, and the consistency of suction is maintained. On the other hand, the product corresponding to the infrared electrothermal coating 111b has a later heating time than the product corresponding to the infrared electrothermal coating 111a. The connecting electrodes 112d and 112e reduce the overall resistance value of the infrared electrothermal coating 111b, ensuring that the product corresponding to the infrared electrothermal coating 111b is sufficiently heated. In other words, the waste caused by the product of this part not being fully heated can be avoided.

[0087] At time t5, it is considered that the aerosol-generating product has been used up. At this time, the power supply can be controlled to stop supplying heating power to the infrared electrothermal coating 111. Furthermore, it is possible to generate notification information to notify the user to replace the aerosol-generating product or that the aerosol-generating product has been used up. The notification methods include, but are not limited to, sound, light, vibration, etc.

[0088] It should be noted that the control curve shown in FIG. 8 is also applicable to other heating methods such as resistance heating, electromagnetic heating, and air heating.

[0089] It should be noted that in other examples, there may be no so-called downward trend during the period from t3 to t5. In this case, during the period from t3 to t5, by controlling the power supply so as to simultaneously supply heating power to the infrared electrothermal coating 111a and the infrared electrothermal coating 111b, the temperature of the region of the infrared electrothermal coating 111a can always be maintained at the first predetermined target temperature T1.

[0090] FIG. 9 is a schematic diagram of the actual temperature curve of the heater provided in the embodiment of the present application.

[0091] Based on the heater 11 shown in FIGS. 3 to 4, the heater 11 is controlled using the control curve shown in FIG. 8. Subsequently, two temperature sensors are used to measure the real-time temperatures of the region of the infrared electrothermal coating 111a and the region of the infrared electrothermal coating 111b respectively (the temperature sensor for the region of the infrared electrothermal coating 111a can use the existing temperature sensor in the example shown in FIGS. 3 to 4), and finally, a curve schematic diagram of time and temperature is obtained.

[0092] As shown in FIG. 9, S1 is a curve schematic diagram of time and temperature of the region of the infrared electrothermal coating 111a, and S2 is a curve schematic diagram of time and temperature of the region of the infrared electrothermal coating 111b.

[0093] It should be noted that the "control curve" indicates that the controller 32 controls the operation of the heater 11 according to the curve, and the "temperature curve" indicates the relationship between the temperature and time generated during the operation of the heater 11. The controller 32 may be a part of the circuit board 3 and includes, but is not limited to, an MCU.

[0094] During the period from 0 to 30 s (corresponding to the control period from 0 to t2 in FIG. 8), the temperature of the region of the infrared electrothermal coating 111a rises from the initial temperature (about 28°C) to about 270°C. On the other hand, since heating has not started in the region of the infrared electrothermal coating 111b, due to the effect of heat transfer, its temperature gradually rises to about 80°C.

[0095] During the period from 30s to 70s (corresponding to the t2 - t3 control period in Figure 8), in order to start heating simultaneously with the infrared electrothermal coating 111b and the infrared electrothermal coating 111a at the time of 30s, the temperature in the area of the infrared electrothermal coating 111b rises rapidly. In contrast, the temperature in the area of the infrared electrothermal coating 111a tends to become gentle (decrease slightly).

[0096] During the period from 70s to 110s (corresponding to the t3 - t4 control period in Figure 8), the temperature in the area of the infrared electrothermal coating 111a drops to about 230°C, and the temperature change in the area of the infrared electrothermal coating 111b is almost the same as the temperature change in the area of the infrared electrothermal coating 111a.

[0097] During the period from 110s to 240s (corresponding to the t4 - t5 control period in Figure 8), the temperature in the area of the infrared electrothermal coating 111a drops to about 210°C, and the temperature change in the area of the infrared electrothermal coating 111b is also almost the same as the temperature change in the area of the infrared electrothermal coating 111a. Then, around about 140s, the temperature in the area of the infrared electrothermal coating 111b and the temperature in the area of the infrared electrothermal coating 111a become the same. During the period from 140s to 240s, since the resistance value of the infrared electrothermal coating 111b is smaller than the resistance value of the infrared electrothermal coating 111a, the temperature in the area of the infrared electrothermal coating 111b is significantly higher than the temperature in the area of the infrared electrothermal coating 111a.

[0098] It should be noted that although the preferred embodiments of the present application are shown in the specification and drawings of the present application, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not additionally limit the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosure content of the present application more sufficient and comprehensive. Also, continue to combine the above technical features to form various embodiments not listed above, and all of these embodiments shall fall within the scope described in the specification of the present application. Furthermore, those skilled in the art can make improvements and conversions based on the above description, and all of these improvements and conversions shall fall within the protection scope of the appended claims of the present application.

Claims

1. An aerosol generating device configured to generate an aerosol by heating an aerosol-forming substrate including an aerosol-forming substrate of a first part and an aerosol-forming substrate of a second part, a power source, a heater including a first heating region for heating the aerosol-forming substrate of the first part and a second heating region for heating the aerosol-forming substrate of the second part, controlling the power source to supply heating power only to the first heating region during a first partial period of a control period of the heater, thereby raising the temperature of the first heating region from an initial temperature to a first predetermined target temperature, a controller configured to control the power source to simultaneously supply heating power to the first heating region and the second heating region during the remaining partial period of the control period of the heater, The aerosol generating device, wherein a duration of the first partial period is 10 s to 30 s.

2. having a mouth end and a distal end opposite the mouth end, The aerosol generating device according to claim 1, wherein the aerosol-forming substrate of the first part is closer to the mouth end than the aerosol-forming substrate of the second part.

3. The aerosol generating device according to claim 1, wherein both the first heating region and the second heating region are controllable independently, or the first heating region is controllable independently and the second heating region is not controllable independently.

4. further comprising a temperature sensor for measuring temperature information of the first heating region, The aerosol generating device according to claim 1, wherein the controller is configured to control heating power supplied by the power source according to the temperature information of the first heating region fed back from the temperature sensor throughout a control period of the heater.

5. The aerosol generating device according to claim 1, wherein a start time of the first partial period is a predetermined time after the controller receives a start signal.

6. The first partial period includes a first duration and a second duration, The controller, during the first duration, controlling the power source to supply first heating power to the first heating region, thereby raising the temperature of the first heating region from an initial temperature to a first predetermined target temperature, In the second duration, the power supply is controlled to supply second heating power to the first heating region, so that the temperature of the first heating region is maintained at a first predetermined target temperature. The aerosol generator according to claim 1, wherein the second heating power is smaller than the first heating power.

7. The remaining partial period includes a third duration. The controller is configured to maintain the temperature of the first heating region at a first predetermined target temperature by controlling the power supply to simultaneously supply heating power to the first heating region and the second heating region in the third duration. The aerosol generator according to claim 1.

8. The remaining partial period includes a fourth duration. The controller is configured to lower the temperature of the first heating region from the first predetermined target temperature to a second predetermined target temperature and maintain it at the second predetermined target temperature by controlling the power supply to simultaneously supply heating power to the first heating region and the second heating region in the fourth duration. The aerosol generator according to claim 1.

9. The remaining partial period includes a fifth duration. The controller is configured to lower the temperature of the first heating region from the first predetermined target temperature to a third predetermined target temperature before lowering it to the second predetermined target temperature and maintain it at the third predetermined target temperature by controlling the power supply to simultaneously supply heating power to the first heating region and the second heating region in the fifth duration. The aerosol generator according to claim 8.

10. The remaining partial period includes the time when the first heating region and the second heating region reach the same temperature. The aerosol generator according to claim 8, wherein the time when the temperature of the first heating region drops to the second predetermined target temperature is earlier than the time when the first heating region and the second heating region reach the same temperature.

11. The remaining partial period includes a sixth duration, and the end time of the sixth duration is the end time of the control period of the heater. The controller is configured to control the power supply to simultaneously supply heating power to the first heating region and the second heating region in the sixth duration, so that the temperature of the first heating region is lower than the temperature of the second heating region. The aerosol generating device according to claim 1, characterized in that.

12. The first heating region and the second heating region are configured to operate in conjunction with each other during the remaining partial period. The heating power supplied by the power supply during the remaining partial period is allocated to the first heating region and the second heating region according to a predetermined resistance value relationship between the first heating region and the second heating region. The aerosol generating device according to claim 1, characterized in that.

13. The resistance value of the first heating region is larger than the resistance value of the second heating region. The aerosol generating device according to claim 12, characterized in that.

14. The heater A substrate, An infrared electrothermal coating provided on the surface of the substrate and including a first infrared electrothermal coating defining the first heating region and a second infrared electrothermal coating defining the second heating region. A conductive element including a first conductive electrode, a second conductive electrode, and a third conductive electrode provided on the surface of the substrate at intervals from each other. The power supply supplies heating power to the first infrared electrothermal coating through the first conductive electrode and the third conductive electrode, and supplies heating power to the second infrared electrothermal coating through the second conductive electrode and the third conductive electrode. The aerosol generating device according to claim 1, characterized in that.

15. The conductive element further includes at least one connection electrode. The at least one connection electrode is for separating the second infrared electrothermal coating into at least two sub-infrared electrothermal coatings connected in series between the second conductive electrode and the third conductive electrode. The aerosol generating device according to claim 14, characterized in that.

16. An aerosol generation substrate including a first portion of an aerosol generation substrate and a second portion of an aerosol generation substrate is arranged to heat the aerosol generation substrate to generate an aerosol, and a power supply, a first heating region for heating the first portion of the aerosol generation substrate, and A control method for an aerosol generating device including a second heating region for heating a second portion of the aerosol generating substrate. In the first sub-period of the control period of the heater, by controlling the power supply so as to supply heating power only to the first heating region, the temperature of the first heating region is raised from the initial temperature to a first predetermined target temperature; In the remaining sub-period of the control period of the heater, controlling the power supply so as to simultaneously supply heating power to the first heating region and the second heating region; A method for controlling an aerosol generating device, characterized in that the duration of the first sub-period is 10 s to 30 s.

17. A method for generating an aerosol by an aerosol generating device including a first heating region for heating the aerosol forming substrate of the first part and a second heating region for heating the aerosol forming substrate of the second part from an aerosol generating substrate including the aerosol generating substrate of the first part and the aerosol generating substrate of the second part, In the first sub-period of the control period of the heater, starting heating by the first heating region, raising the temperature from the initial temperature to a first predetermined target temperature, and not starting heating by the second heating region; In the remaining sub-period of the control period of the heater, simultaneously starting heating by the first heating region and the second heating region; A method characterized in that the duration of the first sub-period is 10 s to 30 s.

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