Aerosol heating device

Abstract

The utility model relates to the technical field of aerosol generating devices, and discloses an aerosol heating device, a heating assembly of the aerosol heating device comprises a circumferential heater and a central heater, one of the circumferential heater and the central heater is configured as a main heater, and the other is configured as an auxiliary heater. The average heating temperature of the auxiliary heater is lower than the average heating temperature of the main heater, the target temperature of the main heater in the first stage is higher than the target temperature of the auxiliary heater in the second stage, and the target temperature of the auxiliary heater in the first stage is basically equal to the target temperature of the auxiliary heater in the second stage. In this way, the target temperature of the main heater in the first stage is higher, and the time for generating the first mouth aerosol can be shortened. The target temperature of the second stage of the main heater is lower than the target temperature of the first stage, so that the heating temperature of the aerosol generating product can be prevented from being too high, the phenomena of carbonization and scorching of the aerosol generating product are avoided, and the taste of the aerosol is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of aerosol generating devices, and particularly to an aerosol heating device. Background Art

[0002] An aerosol generating device heats a tobacco product by a non-combustion heating technique to generate an aerosol. In a typical aerosol generating device, it includes a central heating element which is used to heat the tobacco product inside the tobacco product, so as to make the tobacco product generate fumes; in another typical aerosol generating device, it includes a circumferential heating element which is arranged around the tobacco product and is used to heat the tobacco product from the outside of the tobacco product, so as to make the tobacco product generate fumes.

[0003] However, whether it is a central heating element or a circumferential heating element, there will be a large temperature gradient in the transverse direction of the tobacco product during operation, resulting in low heating efficiency of the tobacco product, and it takes a long time for the tobacco product to generate the first puff of fumes. Based on this, an aerosol generating device is designed, which includes both a central heating element and a circumferential heating element at the same time to reduce the temperature gradient in the transverse direction of the tobacco product. However, the tobacco product heated by this device has a serious carbonization problem, resulting in a strong burnt smell in the fumes and an increase in harmful substances in the fumes. Summary of the Invention

[0004] The main technical problem to be solved by the embodiments of the present application is to provide an aerosol heating device, which can effectively avoid the problem of serious carbonization of the tobacco product resulting in a strong burnt smell in the fumes, and improve the user experience of the product and the taste of the aerosol.

[0005] To solve the above technical problems, one technical solution adopted in the embodiments of the present application is to provide an aerosol heating device, which includes a heating component and a power supply component. The heating component includes a circumferential heater and a central heater that can independently generate heat; the circumferential heater has a receiving cavity for accommodating at least a part of the aerosol generating article inside, and the circumferential heater includes a first circumferential heating part, which is configured to be able to generate heat to externally heat the aerosol generating article, and at least a part of the central heater is arranged in the receiving cavity to internally heat the aerosol generating article; one of the first circumferential heating part and the central heater is the main heater, and the other is the auxiliary heater; and the power supply component is electrically connected to the heating component and is configured to provide different powers to the heating component in a first stage and a second stage, so that the main heater and the auxiliary heater generate heat simultaneously, and the target temperature of the main heater in the first stage is higher than its target temperature in the second stage, and the target temperature of the auxiliary heater in the first stage is basically equal to its target temperature in the second stage; wherein, the average heating temperature of the auxiliary heater in the first stage and the second stage is lower than or equal to the average heating temperature of the main heater in the first stage and the second stage.

[0006] In some embodiments, the target temperature of the main heater in the first stage is a first temperature, the target temperature in the second stage is a second temperature, and the target temperature of the auxiliary heater in the first stage and the second stage is a third temperature; the first temperature is higher than the second temperature, and the second temperature is higher than the third temperature.

[0007] In some embodiments, the first temperature T1 satisfies 350°C ≤ T1 ≤ 400°C; and / or the second temperature T2 satisfies 280°C ≤ T2 ≤ 320°C; and / or the third temperature T3 satisfies 200°C ≤ T3 ≤ 220°C.

[0008] In some embodiments, the proximal end of the circumferential heater is open for at least a part of the aerosol generating article to be inserted into the receiving cavity. The longitudinal length of the first circumferential heating part is less than the longitudinal length of the circumferential heater, and the distance between the first circumferential heating part and the proximal end of the circumferential heater is less than the distance between the first circumferential heating part and the distal end of the circumferential heater.

[0009] In some embodiments, the first circumferential heating part includes a transparent tubular matrix and an infrared heating layer provided on the outer surface of the tubular matrix; or

[0010] The first circumferential heating part includes a tubular matrix and a resistive heating element or an electromagnetic heating element provided on the tubular matrix.

[0011] In some embodiments, the proximal end of the circumferential heater is open to allow at least partial insertion of the aerosol-generating article into the receiving cavity. The circumferential heater includes a second circumferential heating portion disposed between the first circumferential heating portion and the distal end of the circumferential heater.

[0012] In some embodiments, the circumferential heater includes a metal tube capable of generating heat in a changing magnetic field, and the first circumferential heating portion is a component of the metal tube. The heating assembly further includes a first magnetic field generator electrically connected to the power supply assembly to generate a changing magnetic field, wherein the first magnetic field generator is disposed around the first circumferential heating portion.

[0013] In some embodiments, the proximal end of the circumferential heater is open to allow at least partial insertion of the aerosol-generating article into the receiving cavity. A portion of the metal tube is a second circumferential heating portion disposed around the receiving cavity, and the second circumferential heating portion is disposed between the first circumferential heating portion and the distal end of the circumferential heater; wherein

[0014] the first magnetic field generator is disposed around the second circumferential heating portion; or

[0015] the heating assembly further includes a second magnetic field generator disposed around the second circumferential heating portion, and the second magnetic field generator is electrically connected to the power supply assembly to generate a changing magnetic field.

[0016] In some embodiments, in a first stage, the second circumferential heating portion is configured to have the same target temperature as the first circumferential heating portion; and / or in a second stage, the second circumferential heating portion is configured to have the same target temperature as the first circumferential heating portion.

[0017] In some embodiments, at least a portion of the central heater is surrounded by the first circumferential heating portion.

[0018] In some embodiments, the proximal end of the circumferential heater is open to allow the aerosol-generating article to be inserted into the receiving cavity. The aerosol heating device further includes a base, the central heater is fixed to the base, and the base is disposed at the distal end of the circumferential heater and is at least partially held within the circumferential heater.

[0019] In some embodiments, the aerosol heating device further includes a seal disposed between the base and the circumferential heater to provide a seal between the base and the circumferential heater.

[0020] In some embodiments, the central heater includes at least one of a resistive heating element, an infrared heating layer, or an electromagnetic heating element capable of generating heat in a changing magnetic field.

[0021] In some embodiments, one of the first circumferential heating part and the central heater includes an electromagnetic heating element capable of generating heat in a changing magnetic field, and the other includes a resistive heating element or an infrared heating layer;

[0022] The aerosol heating device further includes a temperature detector connected to the electromagnetic heating element to detect the temperature of the electromagnetic heating element; and / or

[0023] The resistive heating element or the infrared heating layer is configured such that its resistivity is a function of its temperature. The aerosol heating device further includes a detector electrically connected to the resistive heating element or the infrared heating layer to obtain an electrical parameter associated with the temperature of the resistive heating element or the infrared heating layer. The electrical parameter includes resistivity, resistance value, current or voltage.

[0024] The beneficial effects of the embodiments of the present application are as follows: The heating assembly of the aerosol heating device in the embodiments of the present application includes a circumferential heater and a central heater, and the two jointly heat the aerosol generating article. However, one is configured as the main heater and the other is configured as the auxiliary heater. The average heating temperature of the auxiliary heater in the first stage and the second stage is lower than or equal to the average heating temperature of the main heater in the first stage and the second stage. At the same time, the target temperature of the auxiliary heater in the first stage is substantially equal to its target temperature in the second stage. Therefore, the temperature at which the main heater heats the aerosol generating article in the first stage and the second stage is variable, and the heating temperature of the main heater in the second stage is lower than that in the first stage, so as to limit the duration of heating the aerosol generating article at a relatively high temperature by the main heater and prevent the aerosol generating article from accumulating excessive heat in the second stage. Thus, with the mutual cooperation of the main heater and the auxiliary heater, the aerosol generating article can have a small temperature gradient in the transverse direction and can be prevented from being overheated and carbonized. This not only enables the heating assembly to have a high heating efficiency for the aerosol generating article, but also can effectively reduce the miscellaneous gas and harmful substances generated by the aerosol generating article. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application, the following will briefly introduce the drawings required for use in the description of the specific embodiments. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0026] Figure 1 It is a cross-sectional view when the aerosol heating device and the aerosol generating article in the embodiment of the present application are plugged together.

[0027] Figure 2 It is a schematic diagram when the aerosol heating device and the aerosol generating article in the embodiment of the present application are plugged together.

[0028] Figure 3 is a schematic cross-sectional view taken along A-A in the aerosol heating device and the aerosol generating article of the embodiment of the present application when they are plugged together. Figure 2 in the figure.

[0029] Figure 4 is a schematic cross-sectional view taken along A-A in the heating component of the aerosol heating device of another embodiment of the present application. Figure 2 in the figure.

[0030] Figure 5 is a schematic cross-sectional view taken along A-A in the heating component of the aerosol heating device of yet another embodiment of the present application. Figure 2 in the figure. Detailed implementation manners

[0031] To facilitate the understanding of the present application, the present application will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for facilitating the description of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not used to 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.

[0033] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0034] Please refer to Figures 1 to 5, in the aerosol heating device according to the embodiment of the present application, it includes a heating component 10 and a power supply component 50. The power supply component 50 at least includes a battery cell 51 and a circuit board component 52. The circuit board component 52 is electrically connected to the battery cell 51 and the heating component 10 respectively, and the circuit board component 52 is used to regulate the power provided by the battery cell 51 to the heating component 10. The heating component 10 is used for at least partial insertion of the aerosol generating article 40. The power supply component is electrically connected to the heating component 10 to supply electrical energy to the heating component 10, so that the heating component 10 generates heat to heat the aerosol generating article 40 and then generate aerosol. The heating component 10 includes a circumferential heater 11 and a central heater 12 that can independently generate heat respectively. Among them, the circumferential heater 11 has a receiving cavity 111 inside for receiving at least a part of the aerosol generating article 40. The circumferential heater 11 includes a first circumferential heating part 113, and the first circumferential heating part 113 is configured to be able to generate heat to heat the aerosol generating article 40 outside the aerosol generating article 40. At least a part of the central heater 12 is arranged in the receiving cavity 111, and the central heater 12 is configured to be able to generate heat to heat the aerosol generating article 40 inside the aerosol generating article 40.

[0035] Both the first circumferential heating part 113 and the central heater 12 can heat the aerosol generating article 40 simultaneously, and one of the two is the main heater and the other is the auxiliary heater. Such a setting can improve the heating efficiency of the aerosol generating article 40, be able to quickly generate aerosol and reduce the temperature gradient of the aerosol generating article 40 in the transverse direction.

[0036] Further, the power supply component is configured to supply different electric powers to the main heater and the auxiliary heater in the heating component 10 in the first stage and the second stage, so that the main heater and the auxiliary heater work simultaneously, and the heating temperature of at least the main heater is variable. It can be understood that, in the order of time progression, the first stage is located before the second stage in time. For example, the first stage can be the preheating stage of the aerosol heating device, and the second stage can be the suction stage of the aerosol heating device. In the preheating stage, the main heater can be raised from an initial temperature to a relatively high first temperature at a relatively high power, so that at least a part of the aerosol-generating article can quickly reach the smoking temperature and generate a sufficient amount of aerosol for the user to inhale. The initial temperature can be the ambient temperature or the residual temperature that has not dissipated after the main heater's last operation. During the suction stage, the overall power of the heating component 10 can be lower than the overall power of the heating component 10 in the preheating stage. The user's suction of the aerosol-generating article 40 mainly occurs during the suction stage. The duration of the preheating stage can be shorter than the duration of the suction stage. The duration of the preheating stage can be less than 20S. The duration of the preheating stage is affected by the heating temperature or the heat released by the heating component 10; further, the heating temperature of the main heater at the initial stage of heating the aerosol-generating article 40 and the heating temperature of the auxiliary heater at the initial stage of heating the aerosol-generating article 40 can affect the duration of the preheating stage. It can be understood that, within a certain limit, when the total heat released by the heating component 10 at the initial stage of heating the aerosol-generating article 40 is relatively large, the duration of the preheating stage can be shorter. However, in the second stage or during the suction stage, if the heating component 10 continues to heat the aerosol-generating article 40 with a high heat output, it will cause excessive heat accumulation in the aerosol-generating article 40, resulting in it being scorched or burned.

[0037] Based on this, the target temperature of the main heater in the first stage can be higher than the target temperature of the main heater in the second stage, so as to increase the heating rate of the aerosol-generating article 40 in the first stage and prevent the aerosol-generating article 40 from being overheated by the main heater in the second stage. The target temperature of the auxiliary heater in the first stage can be basically equal to the target temperature of the second stage. The target temperature of the auxiliary heater in the first stage and the second stage can be equal. Of course, there can also be a temperature difference between the target temperature of the auxiliary heater in the first stage and the target temperature of the auxiliary heater in the second stage, but when the temperature difference does not exceed 20°C, it also conforms to the "the target temperature of the auxiliary heater in the first stage is basically equal to the target temperature of the second stage" described in this application. And, the average temperature of the auxiliary heater in the first stage and the second stage is lower than or equal to the average temperature of the main heater in the first stage and the second stage.

[0038] It should be noted that: In some examples, the average temperature of the auxiliary heater in the first stage and the second stage is the average value of the temperatures of the auxiliary heater in the first stage and the second stage. In some examples, the average temperature of the auxiliary heater in the first stage and the second stage is equal to 1 / 2 of the sum of the target temperature of the auxiliary heater in the first stage and the target temperature of the auxiliary heater in the second stage. In some examples, the average temperature of the auxiliary heater in the first stage and the second stage is equal to 1 / 2 of the sum of the average temperature of the auxiliary heater in the first stage and the average temperature of the auxiliary heater in the second stage.

[0039] In some examples, the average temperature of the main heater in the first stage and the second stage is the average value of the temperatures of the main heater in the first stage and the second stage. In some examples, the average temperature of the main heater in the first stage and the second stage is equal to 1 / 2 of the sum of the target temperature of the main heater in the first stage and the target temperature of the main heater in the second stage. In some examples, the average temperature of the main heater in the first stage and the second stage is equal to 1 / 2 of the sum of the average temperature of the main heater in the first stage and the average temperature of the main heater in the second stage.

[0040] Through the above settings, the temperature at which the main heater heats the aerosol-generating article 40 in the first stage and the second stage is variable, and the heating temperature of the main heater in the second stage is lower than that in the first stage, so as to limit the duration of heating the aerosol-generating article 40 at a relatively high temperature by the main heater and prevent excessive heat accumulation in the aerosol-generating article 40 in the second stage. Thus, with the mutual cooperation of the main heater and the auxiliary heater, the aerosol-generating article 40 can have a relatively small temperature gradient in the transverse direction and can be prevented from being overheated and carbonized. This not only enables the heating component to have a relatively high heating efficiency for the aerosol-generating article 40, but also can effectively reduce the miscellaneous gas and harmful substances generated by the aerosol-generating article 40.

[0041] The target temperature of the main heater in the first stage is relatively high, so the aerosol-generating article 40 can be quickly heated up in the first stage, which helps to shorten the time for the user to wait for sucking the first puff of aerosol. In the second stage, since at least part of the aerosol-generating article 40 has been heated and has a certain amount of heat, if it continues to be heated at a relatively high target temperature, it is easy to cause the aerosol-generating article 40 to burn. Therefore, the target temperature of the main heater in the second stage can be set lower than that in the first stage. The target temperatures of the auxiliary heater in the first stage and the second stage are basically equal. Thus, compared with the first stage, the amount of heat provided by the heating component 10 to the aerosol-generating article 40 in the second stage is reduced, so that the aerosol-generating article 40 can be prevented from overheating in the second stage.

[0042] Preferably, the central heater 12 is the main heater and the first circumferential heating part 113 is the auxiliary heater. The central heater 12 mainly heats the aerosol-generating article 40 inside the aerosol-generating article 40, so most of the heat generated by the central heater 12 can be absorbed by the aerosol-generating article 40; while the first circumferential heating part 113 is arranged outside the aerosol-generating article 40 during operation, so a part of the heat generated by the first circumferential heating part 113 is released towards its inner side and can thus be absorbed by the aerosol-generating article 40. Based on the temperature difference between the first circumferential heating part 113 and its outer side, another part of the heat generated by the first circumferential heating part 113 is released towards its outer side, resulting in heat loss. The greater the temperature difference between the first circumferential heating part 113 and its outer side, the more heat is released by the first circumferential heating part 113 towards its outer side. Therefore, using the first circumferential heating part 113 as the auxiliary heater and the central heater 12 as the main heater can reduce the total power consumption of the heating assembly 10.

[0043] In some embodiments, the target temperature of the main heater in the first stage is the first temperature, and the target temperature of the main heater in the second stage is the second temperature. The temperature of the auxiliary heater in the first stage and the second stage can both be the third temperature. The third temperature can be the average temperature of the auxiliary heater in the first stage and the second stage. The third temperature can be the target temperature of the auxiliary heater in the first stage. The third temperature can be the target temperature of the auxiliary heater in the second stage. The third temperature can be the average of the target temperature of the auxiliary heater in the first stage and the target temperature of the auxiliary heater in the second stage. Among them, the target temperature of the auxiliary heater in the first stage can be the same as the target temperature of the auxiliary heater in the second stage.

[0044] Among them, the third temperature is different from both the first temperature and the second temperature. When the heating assembly 10 is operating, since at least a part of the central heater 12 is located inside the aerosol-generating article 40 and the first circumferential heating part 113 is located outside the aerosol-generating article 40, the central heater 12 and the first circumferential heating part 113 have different heat dissipation efficiencies. Making the third temperature different from both the first temperature and the second temperature not only helps to make full use of the heating assembly 10, but also can reduce the power consumption of the heating assembly 10. At the same time, while reducing the temperature gradient of the aerosol-generating article 40 in the transverse direction, it can make the aerosol generated by the aerosol-generating article 40 have layers, which is beneficial to improving the taste of the aerosol.

[0045] Furthermore, the first temperature is higher than the second temperature, and the second temperature is higher than the third temperature.

[0046] The first temperature can be lower than the ignition point of the aerosol-generating article 40 to prevent the aerosol-generating article 40 from burning or being scorched when heated by the first temperature. For example, the first temperature T1 can satisfy: 350°C ≤ T1 ≤ 400°C.

[0047] The second temperature can be higher than the fuming temperature of the aerosol-generating article 40, and the volatile substances or solvents in the aerosol-generating article 40 can decompose or volatilize at the second temperature to generate aerosol. For example, the second temperature T2 can satisfy: 280°C ≤ T2 ≤ 320°C.

[0048] The third temperature can be mainly used to coordinate with the second temperature or the first temperature to reduce the temperature gradient of the aerosol-generating article 40 in the transverse direction, which helps to fully bake the aerosol-generating article 40 from the inside out. For example, the third temperature T3 can satisfy: 200°C ≤ T3 ≤ 220°C.

[0049] In some embodiments, referring to Figure 3 , along the longitudinal direction of the circumferential heater 11, the circumferential heater 11 has opposite proximal end 11a and distal end 11b, wherein the proximal end 11a has an open opening for at least partial insertion of the aerosol-generating article 40 into the receiving cavity of the circumferential heater 11. The longitudinal length of the first circumferential heating portion 113 is less than the longitudinal length of the circumferential heater 11, and the distance between the first circumferential heating portion 113 and the proximal end 11a of the circumferential heater 11 is less than the distance between the first circumferential heating portion 113 and the distal end 11b of the circumferential heater 11. Through the above arrangement, the first circumferential heating portion 113 can be made closer to the proximal end 11a of the circumferential heater 11. The aerosol-generating article 40 has an aerosol-generating matrix. The matrix can include tobacco material, and the tobacco material is a material capable of generating tobacco flavor or generating nicotine. The matrix may not include tobacco material. The matrix extends longitudinally in the aerosol-generating article 40. At least a part of the matrix is received in the receiving cavity. The first circumferential heating portion 113 can mainly heat a part of the aerosol-generating matrix. Specifically, the first circumferential heating portion 113 is disposed adjacent to the proximal end 11a of the circumferential heater 11, so the aerosol-generating matrix heated by the first circumferential heating portion 113 is mainly the aerosol-generating matrix near the mouthpiece, and the aerosol generated by this part of the aerosol-generating matrix can flow into the mouthpiece more efficiently for suction. Other parts of the aerosol-generating matrix in the aerosol-generating article 40 can be heated by other heaters, such as being heated by the central heater 12 or being heated by the second circumferential heating portion 114.

[0050] In some embodiments, referring to Figure 3 or Figure 4, at least a part of the central heater 12 is surrounded by the first circumferential heating part 113, so that the central heater 12 and the first circumferential heating part 113 can jointly heat the inner and outer sides of the same part of the aerosol-generating article 40, thereby making the temperature gradient of this part lower in the transverse direction, which helps to fully bake this part and can also improve the heating efficiency of this part. Further, when the first circumferential heating part 113 is closer to the proximal end 11a of the circumferential heater 11 and at the same time surrounds the periphery of a part of the central heater 12.

[0051] It can be understood that the first circumferential heating part 113 can be held on other components of the circumferential heater 11 in the transverse direction. The first circumferential heating part 113 can be a component that exists independently in the circumferential heater 11 in the transverse direction.

[0052] When the first circumferential heating part 113 is held on other components of the circumferential heater 11 in the transverse direction:

[0053] As some examples, the circumferential heater 11 includes a tubular base body, and the first circumferential heating part 113 includes a heating element arranged on the tubular base body 112. The tubular base body 112 is tubular, preferably circular tubular. The receiving cavity 111 is located inside the tubular base body 112. The heating element is used to release heat to heat the aerosol-generating article 40.

[0054] The heating element can be a heating layer arranged on the surface or surface layer of the tubular base body 112 by means of printing, coating, physical deposition, chemical deposition, ion sputtering or particle injection, etc. In order to preferably arrange the heating layer on the outer surface of the tubular base body 112 to reduce the process difficulty and process cost of arranging the heating layer on the tubular base body 112.

[0055] The heating layer can include an infrared heating layer. The infrared heating layer can generate infrared rays when heated or when an electric current flows through. The infrared heating layer can mainly use infrared rays and thermal radiation to heat the aerosol-generating article 40. When the heating layer includes an infrared heating layer, it is preferably that the area of the tubular base body 112 corresponding to the infrared heating layer is transparent, so that the infrared rays emitted by the infrared heating layer arranged on the tubular base body 112 can penetrate the tubular base body 112 and irradiate on the aerosol-generating article 40. Of course, the entire tubular base body 112 can be made of transparent materials, such as made of glass, quartz, etc.

[0056] The heating layer can include a resistance heating layer. The resistance heating layer can generate Joule heat when an electric current flows through. The resistance heating layer can mainly use heat conduction to heat the aerosol-generating article 40.

[0057] The heating element may also be other heating elements outside the heating layer, including resistive heating elements and / or electromagnetic heating elements. The resistive heating element and / or electromagnetic heating element includes a helical heating wire or a heating mesh. Among them, the resistive heating element may further include a conductive ceramic. The electromagnetic heating element is an element that can generate heat in a changing magnetic field. When the heating assembly includes an electromagnetic heating element, the heating assembly may further include a magnetic field generator for generating a changing magnetic field. The magnetic field generator can be electrically connected to the power supply assembly to obtain a current for generating a magnetic field. The heating element may be disposed on the periphery of the tubular substrate 112. The heating element may be disposed adjacent to the inner surface of the tubular substrate 112. At least a part of the heating element may be disposed in the wall of the tubular substrate 112.

[0058] The tubular substrate 11 may have a relatively large longitudinal length, and the heating element is only disposed corresponding to a part of the tubular substrate 11. For example, the heating element may be disposed adjacent to the proximal end 11a of the tubular substrate 11. For example, the longitudinal length of the heating element may be less than 2 / 3 of the longitudinal length of the tubular substrate 11. The tubular substrate 112 may have good thermal conductivity. For example, the thermal conductivity of the tubular substrate 112 may be at least 10 W / (m·k) at 23 °C and 50% relative humidity, so that the area on the tubular substrate 112 that does not correspond to the heating element can also have a relatively high temperature.

[0059] When the first circumferential heating part 113 is a member that exists isolated in the transverse direction of the circumferential heater 11:

[0060] In one example, the circumferential heater 11 includes a tubular body made of a conductive ceramic, and the receiving cavity 111 is located inside the tubular body. The first circumferential heating part 113 is at least part of the tubular body of the tubular body. In one example, the circumferential heater 11 includes a metal tube that can generate heat in a changing magnetic field, and the receiving cavity 111 is located inside the metal tube. The first circumferential heating part 113 is at least part of the tubular body of the metal tube.

[0061] In some embodiments, referring to Figure 4 , the circumferential heater 11 further includes a second circumferential heating part 114. Compared with the first circumferential heating part 113, the second circumferential heating part 114 is disposed adjacent to the distal end 11b of the circumferential heater 11. The first circumferential heating part 113 and the second circumferential heating part 114 may be arranged generally along the longitudinal direction of the circumferential heater 11, so that at least a part of the section of the aerosol-generating article 40 heated by the first circumferential heating part 113 is different from the section of the aerosol-generating article 40 heated by the second circumferential heating part 114, or at least a part of the section of the aerosol-generating article 40 heated by the first circumferential heating part 113 is different from the section of the aerosol-generating article 40 heated by the second circumferential heating part 114.

[0062] As an example, the second circumferential heating portion 114 is disposed between the first circumferential heating portion 113 and the distal end 11b of the circumferential heater 11, so that the first circumferential heating portion 113 and the second circumferential heating portion 114 do not overlap longitudinally, and the sections of the aerosol generating article 40 heated by the first circumferential heating portion 113 and the second circumferential heating portion 114 do not overlap longitudinally. Further, the first circumferential heating portion 113 and the second circumferential heating portion 114 are spaced apart longitudinally.

[0063] As an example, both the first circumferential heating portion 113 and the second circumferential heating portion 114 include heating elements, and the types of heating elements included in the two may be the same or different; for example, the heating elements included in the two may both be resistive heating elements; or, the first circumferential heating portion 113 includes a resistive heating element, and the second circumferential heating portion 114 includes an electromagnetic heating element. In this example, the heating element included in the second circumferential heating portion 114 may also be disposed on the tubular substrate 112, that is, the tubular substrate 11 may have a relatively large longitudinal length, so as to be able to hold the heating element in the first circumferential heating portion 113 and the heating element in the second circumferential heating portion 114 at the same time. In this example, at least a part of the heating element in the first circumferential heating portion 113 may overlap with the heating element in the second circumferential heating portion 114. In this example, the heating element in the first circumferential heating portion 113 may overlap with at least a part of the heating element in the second circumferential heating portion 114. In this example, the heating element in the first circumferential heating portion 113 may be spaced apart longitudinally from the heating element in the second circumferential heating portion 114. In this example, the tubular substrate 112 may have good thermal conductivity, and the thermal conductivity of the tubular substrate 112 may be at least 10 W / (m·k) at 23°C and 50% relative humidity.

[0064] In some embodiments, referring to Figure 3 , the circumferential heater 11 includes a metal tube that can generate heat in a changing magnetic field, and the first circumferential heating portion 113 is a component of the metal tube; the heating assembly further includes a first magnetic field generator, and the first magnetic field generator is electrically connected to the power supply assembly to generate a changing magnetic field, wherein at least a part of the first magnetic field generator surrounds the first circumferential heating portion.

[0065] In some embodiments, referring to Figure 3, the circumferential heater 11 includes a metal tube capable of generating heat in a changing magnetic field, and the first circumferential heating part 113 is a component of the metal tube. The heating assembly 10 further includes a first magnetic field generator 13, which is arranged around the first circumferential heating part 113. The first magnetic field generator 13 is electrically connected to the power supply assembly. Under the action of the power of the power supply assembly, the first magnetic field generator 13 can generate a changing magnetic field. At least a part of the first magnetic field generator 13 is arranged corresponding to the first circumferential heating part 113, for example, arranged around the first circumferential heating part 113. The first magnetic field generator 13 can provide a changing magnetic field for the first circumferential heating part 113 to generate heat, so that the first circumferential heating part 113 heats the aerosol generating article 40 in the accommodation cavity 111. As an example, the first circumferential heating part 113 is only a part of the tube body of the circumferential heater 11, or the tube body of the metal tube arranged corresponding to the first magnetic field generator 13 is the first circumferential heating part 113, and the other part of the tube body is the other part of the circumferential heater 11, so that when the first magnetic field generator 13 works, only a local part (the first circumferential heating part 113) on the metal tube can generate a large eddy current, and the other parts mainly heat up by absorbing the heat of the first circumferential heating part 113. As an example, the first circumferential heating part 113 almost surrounds the entire accommodation cavity 111. When the first magnetic field generator 13 works, the first circumferential heating part 113 can almost heat all the aerosol generating articles 40 in the accommodation cavity 111.

[0066] In some embodiments, a local part of the metal tube is a second circumferential heating part 114 arranged around the accommodation cavity. The second circumferential heating part 114 is arranged between the first circumferential heating part 113 and the distal end 11b of the circumferential heater 11. Among them, a part of the first magnetic field generator 13 is arranged around the second circumferential heating part 114, that is, the first magnetic field generator 13 surrounds both the first circumferential heating part 113 and the second circumferential heating part 114 at the same time. The first circumferential heating part 113 and the second circumferential heating part 114 share a first magnetic field generator 13. When the first magnetic field generator 13 is an induction coil, the winding density of the turns around the first circumferential heating part 113 can be different from the winding density of the turns around the second circumferential heating part 114. The induction coil can have two regions with a relatively large winding density, and these two regions are respectively arranged corresponding to the first circumferential heating part 113 and the second circumferential heating part 114. The induction coil can also have a region with a relatively small winding density, or have a wire region. The region with a relatively small winding density or the wire region is arranged between the two regions with a relatively large winding density. The magnetic field generated by the region with a relatively small winding density or the wire region can be negligible, and the winding density of the region with a relatively large winding density can be the same or different.

[0067] In other embodiments, the heating assembly 10 further includes a second magnetic field generator 14. The second magnetic field generator 14 is electrically connected to the power supply assembly. Under the action of the power of the power supply assembly, the second magnetic field generator 14 can generate a changing magnetic field. The second magnetic field generator 14 and the first magnetic field generator 13 can be spaced apart and arranged on the outer side of the metal tube. The first magnetic field generator 13 is arranged around the periphery of the first circumferential heating part 113, and the second magnetic field generator 14 is arranged around the periphery of the second circumferential heating part 114. Through the structural arrangement in which the circumferential heating parts and the magnetic field generators correspond one by one, the first circumferential heater and the second circumferential heater can work independently of each other, so that the heating method of the aerosol generating article 40 is more diverse and more flexible.

[0068] Alternatively, both the first circumferential heating part 113 and the second circumferential heating part 114 include electromagnetic heating elements. The electromagnetic heating elements of the first circumferential heating part 113 and the electromagnetic heating elements of the second circumferential heating part 114 are both held on the tubular substrate 112. The heating assembly 10 further includes a first magnetic field generator 13 and a second magnetic field generator 14. The first magnetic field generator 13 is mainly arranged corresponding to the electromagnetic heating elements of the first circumferential heating part 113, and mainly provides a changing magnetic field for the electromagnetic heating elements of the first circumferential heating part 113 to generate heat. The second magnetic field generator 14 is mainly arranged corresponding to the electromagnetic heating elements of the second circumferential heating part 114, and mainly provides a changing magnetic field for the electromagnetic heating elements of the second circumferential heating part 114 to generate heat.

[0069] In some embodiments, in the first stage, the second circumferential heating part 114 is configured to have the same target temperature as the first circumferential heating part 113, and / or, in the second stage, the second circumferential heating part 114 is configured to have the same target temperature as the first circumferential heating part 113. In the first stage and / or the second stage, by controlling the target temperatures of the first circumferential heating part 113 and the second circumferential heating part 114 to be the same, the heating amounts of the first circumferential heating part 113 and the second circumferential heating part 114 to the aerosol generating article 40 can be made substantially the same, avoiding uneven longitudinal temperature distribution of the aerosol generating article 40 in the receiving cavity 111 and reducing the quality of aerosol generation.

[0070] In some embodiments, please refer to Figure 3, the aerosol heating device further includes a base 20. The central heater 12 is fixedly arranged on the base 20. The base 20 is arranged at the distal end 11b of the circumferential heater 11, and at least a part of the base 20 is kept within the circumferential heater 11, so that a part of the central heater 12 is located within the accommodation cavity 111. The aerosol generating article 40 is inserted into the accommodation cavity 111 from the proximal end 11a of the circumferential heater 11, and the central heater 12 is inserted into the interior of the aerosol generating article 40, so that the central heater 12 heats outwardly from the interior of the aerosol generating article 40. In some embodiments, the aerosol heating device further includes a seal 30 arranged between the base 20 and the circumferential heater 11 to seal the gap between the base 20 and the circumferential heater 11. On the one hand, it can enhance the firmness and stability of the connection between the base 20 and the circumferential heater 11 and reduce the risk of the base 20 detaching from the circumferential heater 11. On the other hand, it can improve the airtightness between the distal end 11b of the circumferential heater 11 and the base 20 to prevent the generated aerosol from flowing out through the gap between the circumferential heater 11 and the base 20.

[0071] The central heater 12 may include one of a resistive heating element, an infrared heating layer, or an electromagnetic heating element capable of generating heat in a changing magnetic field. And when the central heater 12 includes a resistive heating element or an infrared heating layer, the central heater 12 is electrically connected to a power supply assembly. The power supply assembly can supply power to the central heater 12 and can control the working state of the central heater 12 at the same time. When the central heater 12 includes an electromagnetic heating element, at least a part of the central heater 12 is surrounded by a first magnetic field generator 13. In the changing magnetic field of the first magnetic field generator 13, the central heater 12 can generate heat to heat the aerosol generating article 40.

[0072] In some embodiments, one of the first circumferential heating part 113 and the central heater 12 includes an electromagnetic heating element capable of generating heat in a changing magnetic field, and the other includes a resistive heating element or an infrared heating layer. Please refer to Figure 3 , for example, when the first circumferential heating part 113 is an electromagnetic heating element, the central heater 12 is a resistive heating element or an infrared heating layer. At this time, a first magnetic field generator 13 is arranged outside the circumferential heater 11, and the changing magnetic field generated by the first magnetic field generator 13 causes the first circumferential heating part 113 to generate heat. Please refer to Figure 5 , when the first circumferential heating part 113 in the circumferential heater 11 is a resistive heating element or an infrared heating layer, the central heater 12 is an electromagnetic heating element. At this time, a first magnetic field generator 13 is also arranged outside the circumferential heater 11, and the changing magnetic field generated by the first magnetic field generator 13 causes the central heater 12 to generate heat.

[0073] Please refer to Figure 3, the aerosol heating device further includes a temperature detector 15, and the temperature detector 15 is connected to the electromagnetic heating element to detect the temperature of the electromagnetic heating element. It can be understood that the temperature detector 15 can be a thermocouple detector, the detection part of the thermocouple is in contact connection with the electromagnetic heating element, and the thermocouple detector is electrically connected to the power supply assembly. Of course, in the embodiment where the circumferential heater 11 includes a first circumferential heating part 113 and a second circumferential heating part 114, the number of thermocouple detectors can be two, one thermocouple detector is correspondingly connected to the first circumferential heating part 113, and the other thermocouple detector is correspondingly connected to the second circumferential heating part 114.

[0074] Please refer to Figure 5 , the resistance heating element or the infrared heating layer is configured such that its resistivity is a function of its temperature. The aerosol heating device further includes a detector 16, and the detector 16 is electrically connected to the resistance heating element or the infrared heating layer to obtain the electrical parameters associated with the temperature of the resistance heating element or the infrared heating layer. The electrical parameters include but are not limited to resistivity, resistance value, current or voltage. By obtaining the electrical parameters associated with the temperature of the resistance heating element or the infrared heating layer, precise temperature control of the resistance heating element or the infrared heating layer can be achieved, thereby controlling the heating of the aerosol generating article 40.

[0075] The heating assembly 10 of the aerosol heating device according to the embodiment of the present application includes a circumferential heater 11 and a central heater 12, and the two jointly heat the aerosol generating article 40. However, one is configured as the main heater and the other is configured as the auxiliary heater. In the first stage and the second stage, the average heating temperature of the auxiliary heater is lower than the average heating temperature of the main heater. In this way, it can be ensured that the main heater plays the main heating role and the auxiliary heater plays the auxiliary heating role, thereby shortening the time for generating aerosol by heating the aerosol generating article 40. In addition, the target temperature of the main heater in the first stage is higher than its target temperature in the second stage, and the target temperature of the auxiliary heater in the first stage is basically equal to its target temperature in the second stage. In this way, the target temperature of the main heater in the first stage is higher, which can greatly reduce the time for generating the first puff of aerosol and improve the user experience of the product. By making the target temperature of the main heater in the second stage lower than that in the first stage, the heating temperature of the aerosol generating article 40 can be prevented from being too high, thereby avoiding the phenomenon of carbonization and charring and improving the taste of the aerosol.

[0076] In a typical embodiment of the present application, the circumferential heater 11 includes a metal tube that can generate heat in a changing magnetic field, the central heater 12 includes a ceramic matrix and a heating element provided on the ceramic matrix, or the central heater 12 includes conductive ceramics. And the circumferential heater 11 is the auxiliary heater, and the central heater 12 is the main heater.

[0077] In a typical embodiment of the present application, the circumferential heater 11 includes a metal tube capable of generating heat in a changing magnetic field, and the heating assembly 10 further includes a first magnetic field generator 13 and a second magnetic field generator 14. The first magnetic field generator 13 and the second magnetic field generator 14 are respectively arranged at different positions corresponding to the metal tube, so that two regions on the metal tube are respectively a first circumferential heating portion 113 and a second circumferential heating portion 114, for respectively heating two different longitudinal sections of the aerosol generating article 40. The central heater 12 includes a ceramic matrix and a heating element arranged on the ceramic matrix, or the central heater 12 includes a conductive ceramic. And the circumferential heater 11 is an auxiliary heater, and the central heater 12 is a main heater.

[0078] In a typical embodiment of the present application, the circumferential heater 11 includes a heating layer and a tubular matrix 112 made of metal, and the circumferential heater 11 is an auxiliary heater, and the central heater 12 is a main heater. Among them, the area of the heating layer covering the outer surface / inner surface of the tubular matrix 112 can occupy more than 70% of the area of the outer surface / inner surface of the tubular matrix 112. Preferably, the central heater 12 includes a ceramic matrix and a heating element arranged on the ceramic matrix, or the central heater 12 includes a conductive ceramic.

[0079] In a typical embodiment of the present application, the circumferential heater 11 includes a heating layer and a tubular matrix 112 made of metal, and the circumferential heater 11 is an auxiliary heater, and the central heater 12 is a main heater. Among them, there are at least two heating layers, and the two heating layers are respectively arranged at different positions corresponding to the tubular matrix 112, so that two regions on the tubular matrix 112 are respectively a first circumferential heating portion 113 and a second circumferential heating portion 114, for respectively heating two different longitudinal sections of the aerosol generating article 40. Preferably, the central heater 12 includes a ceramic matrix and a heating element arranged on the ceramic matrix, or the central heater 12 includes a conductive ceramic.

[0080] In a typical embodiment of the present application, the circumferential heater 11 includes a heating layer and a tubular matrix 112 made of ceramic material, and the circumferential heater 11 is an auxiliary heater, and the central heater 12 is a main heater. Among them, the area of the heating layer covering the outer surface / inner surface of the tubular matrix 112 can occupy more than 70% of the area of the outer surface / inner surface of the tubular matrix 112. Preferably, the central heater 12 includes a ceramic matrix and a heating element arranged on the ceramic matrix, or the central heater 12 includes a conductive ceramic. The heating layer can all be an infrared heating layer. The heating layer can all be a resistance heating layer. When including an infrared heating layer, the tubular matrix 112 can be transparent.

[0081] In a typical embodiment of the present application, the circumferential heater 11 includes a tubular body made of conductive ceramic. A receiving cavity 111 is provided in the tubular body made of conductive ceramic. The circumferential heater 11 is an auxiliary heater, and the central heater 12 is the main heater. Preferably, the central heater 12 includes a ceramic substrate and a heating element provided on the ceramic substrate, or the central heater 12 includes conductive ceramic.

[0082] In a typical embodiment of the present application, the circumferential heater 11 includes a heating layer and a tubular substrate 112 made of ceramic material. The circumferential heater 11 is an auxiliary heater, and the central heater 12 is the main heater. Among them, there are at least two heating layers. The two heating layers are respectively arranged at different positions corresponding to the tubular substrate 112, so as to form a first circumferential heating part 113 and a second circumferential heating part 114 on the circumferential heater 11. The first circumferential heating part 113 and the second circumferential heating part 114 are used to heat two different longitudinal sections of the aerosol generating article 40 respectively. Preferably, the central heater 12 includes a ceramic substrate and a heating element provided on the ceramic substrate, or the central heater 12 includes conductive ceramic. The two heating layers can both be infrared heating layers. The two heating layers can both be resistance heating layers. One of the two heating layers can be an infrared heating layer and the other can be a resistance heating layer. When an infrared heating layer is included, the tubular substrate 112 can be transparent.

[0083] In a typical embodiment of the present application, the circumferential heater 11 includes a heating layer and a tubular substrate 112 made of ceramic material. The circumferential heater 11 is an auxiliary heater, and the central heater 12 is the main heater. Among them, the area of the outer surface / inner surface of the tubular substrate 112 covered by the heating layer can occupy more than 70% of the area of the outer surface / inner surface of the tubular substrate 112. Preferably, the central heater 12 includes an electromagnetic heating element. The heating layers can both be infrared heating layers. The heating layers can both be resistance heating layers. When an infrared heating layer is included, the tubular substrate 112 can be transparent.

[0084] In a typical embodiment of the present application, the circumferential heater 11 includes a tubular body made of conductive ceramic. A receiving cavity 111 is provided in the tubular body made of conductive ceramic. The circumferential heater 11 is an auxiliary heater, and the central heater 12 is the main heater. Among them, the central heater 12 includes an electromagnetic heating element.

[0085] In a typical embodiment of the present application, the circumferential heater 11 includes a heating layer and a tubular substrate 112 made of ceramic material, and the circumferential heater 11 is an auxiliary heater, while the central heater 12 is the main heater. Among them, there are at least two heating layers, and the two heating layers are respectively arranged at different positions corresponding to the tubular substrate 112, so as to constitute a first circumferential heating portion 113 and a second circumferential heating portion 114 on the circumferential heater 11. The first circumferential heating portion 113 and the second circumferential heating portion 114 are used to heat two different longitudinal sections of the aerosol generating article 40 respectively. Among them, the central heater 12 includes an electromagnetic heating element. The two heating layers can both be infrared heating layers. The two heating layers can both be resistance heating layers. One of the two heating layers can be an infrared heating layer and the other can be a resistance heating layer. When an infrared heating layer is included, the tubular substrate 112 can be transparent.

[0086] The above are only the embodiments of the present application, and do not limit the patent scope of the present application accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. An aerosol heating device, characterized in that, Comprising: A heating component, including a circumferential heater and a central heater capable of independent heating; The circumferential heater has a receiving cavity for at least partially accommodating an aerosol generating article therein. The circumferential heater includes a first circumferential heating portion configured to be capable of generating heat to externally heat the aerosol generating article. At least a portion of the central heater is disposed in the receiving cavity to internally heat the aerosol generating article; One of the first circumferential heating portion and the central heater is a main heater, and the other is an auxiliary heater; And A power supply component, electrically connected to the heating component and configured to provide different electric powers to the heating component in a first stage and a second stage, such that the main heater and the auxiliary heater generate heat simultaneously, and such that the target temperature of the main heater in the first stage is higher than its target temperature in the second stage, and the target temperature of the auxiliary heater in the first stage is substantially equal to its target temperature in the second stage; Wherein, the average heating temperature of the auxiliary heater in the first stage and the second stage is lower than or equal to the average heating temperature of the main heater in the first stage and the second stage.

2. The aerosol heating device according to claim 1, wherein The target temperature of the main heater in the first stage is a first temperature, the target temperature of the main heater in the second stage is a second temperature, and the temperature of the auxiliary heater in the first stage and the second stage is a third temperature; The first temperature is higher than the second temperature, and the second temperature is higher than the third temperature.

3. The aerosol heating device according to claim 2, wherein The first temperature T1 satisfies 350°C ≤ T1 ≤ 400°C; and / or The second temperature T2 satisfies 280°C ≤ T2 ≤ 320°C; and / or The third temperature T3 satisfies 200°C ≤ T3 ≤ 220°C.

4. The aerosol heating device according to claim 1, wherein The proximal end of the circumferential heater is open for at least a portion of the aerosol generating article to be inserted into the receiving cavity. The longitudinal length of the first circumferential heating portion is less than the longitudinal length of the circumferential heater, and the distance between the first circumferential heating portion and the proximal end of the circumferential heater is less than the distance between the first circumferential heating portion and the distal end of the circumferential heater.

5. The aerosol heating device according to claim 1, wherein The circumferential heater includes a transparent tubular substrate, and the first circumferential heating portion includes an infrared heating layer provided on the outer surface of the tubular substrate; or The circumferential heater includes a transparent tubular substrate, and the first circumferential heating portion includes a resistive heating element or an electromagnetic heating element provided on the tubular substrate.

6. The aerosol heating device according to claim 1, wherein The proximal end of the circumferential heater is open to allow at least partial insertion of the aerosol-generating article into the receiving cavity. The circumferential heater includes a second circumferential heating portion disposed between the first circumferential heating portion and the distal end of the circumferential heater.

7. The aerosol heating device according to claim 1, wherein the circumferential heater includes a metal tube that can generate heat in a changing magnetic field, and the first circumferential heating portion is a component of the metal tube; the heating assembly further includes a first magnetic field generator electrically connected to the power supply assembly to generate a changing magnetic field, wherein at least a part of the first magnetic field generator is disposed around the first circumferential heating portion.

8. The aerosol heating device according to claim 7, wherein the proximal end of the circumferential heater is open to allow at least partial insertion of the aerosol-generating article into the receiving cavity, and a part of the metal tube is a second circumferential heating portion disposed around the receiving cavity, and the second circumferential heating portion is disposed between the first circumferential heating portion and the distal end of the circumferential heater; wherein a part of the first magnetic field generator is disposed around the second circumferential heating portion; or the heating assembly further includes a second magnetic field generator disposed around the second circumferential heating portion, and the second magnetic field generator is electrically connected to the power supply assembly to generate a changing magnetic field.

9. The aerosol heating device according to claim 6 or 8, wherein in the first stage, the second circumferential heating portion is configured to have the same target temperature as the first circumferential heating portion; and / or in the second stage, the second circumferential heating portion is configured to have the same target temperature as the first circumferential heating portion.

10. The aerosol heating device according to claim 1, wherein at least a part of the central heater is surrounded by the first circumferential heating portion.

11. The aerosol heating device according to claim 1, wherein the central heater includes at least one of a resistive heating element, an infrared heating layer, or an electromagnetic heating element that can generate heat in a changing magnetic field.

12. The aerosol heating device according to claim 1, wherein one of the first circumferential heating portion and the central heater includes an electromagnetic heating element that can generate heat in a changing magnetic field, and the other includes a resistive heating element or an infrared heating layer; the aerosol heating device further includes a temperature detector connected to the electromagnetic heating element to detect the temperature of the electromagnetic heating element; and / or the resistive heating element or the infrared heating layer is configured such that its resistivity is a function of its temperature, and the aerosol heating device further includes a detector electrically connected to the resistive heating element or the infrared heating layer to obtain an electrical parameter associated with the temperature of the resistive heating element or the infrared heating layer, and the electrical parameter includes resistivity, resistance value, current, or voltage.

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