Aerosol-generating device

Abstract

The utility model discloses an aerosol generating device, comprising: a heating tube comprising a first conductive portion and a second conductive portion which are arranged at an interval and insulated from each other, the first conductive portion and the second conductive portion enclosing to form a chamber for accommodating an aerosol generating product, the first conductive part and the second conductive part can generate or transfer heat to heat an aerosol generating product so as to generate aerosol; a capacitor configured to change its capacitance value when the aerosol-generating article is accommodated in the chamber or removed from the chamber; the controller is configured to receive the capacitance value of the capacitor and control the aerosol generating device to start or stop heating based on the change of the capacitance value; wherein the first conductive part and the second conductive part are used as two polar plates of the capacitor. In this way, the manufacturing cost of the aerosol generating device is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol, and particularly to an aerosol generating device.

Background Art

[0002] During the use of traditional tobacco products (such as cigarettes, cigars, etc.), tobacco is burned to generate tobacco smoke. There are already products in the prior art that release compounds without burning by heating to replace these traditional tobacco products. Examples of such products are aerosol generating devices, which usually include a metal heating tube for accommodating an aerosol generating article used in conjunction with the aerosol generating device. When the aerosol generating article is accommodated in the heating tube, the heating tube can heat the aerosol generating article, causing at least a part of the active substances in the aerosol generating article to volatilize by heat to generate an aerosol that can be inhaled by the user. The aerosol generating article can be a solid tobacco or non-tobacco filler, such as a cigarette stick.

[0003] Such devices are usually designed with a self-starting heating function. By additionally providing a capacitor outside the heating tube to detect whether the aerosol generating article is accommodated in the heating tube, if it is detected that the article is accommodated in the heating tube, the aerosol generating device is controlled to start heating. However, the additional capacitor leads to a relatively complex structural design and increases the manufacturing cost of the aerosol generating device.

Utility Model Content

[0004] The present application provides an aerosol generating device to solve the technical problem that the manufacturing cost of the aerosol generating device increases due to additionally adding a capacitor to detect whether the aerosol generating article is accommodated in the aerosol generating device.

[0005] At least one embodiment of the present application provides an aerosol generating device, including:

[0006] A heating tube, including a first conductive part and a second conductive part that are spaced apart and insulated from each other. The first conductive part and the second conductive part enclose a chamber for accommodating the aerosol generating article, and the first conductive part and the second conductive part can generate or transfer heat to heat the aerosol generating article to generate an aerosol;

[0007] A capacitor configured to have its capacitance value change when the aerosol generating article is accommodated in or removed from the chamber;

[0008] A controller configured to receive the capacitance value of the capacitor and control the aerosol generating device to start or stop heating based on the change in the capacitance value;

[0009] Wherein, the first conductive part and the second conductive part serve as two electrodes of the capacitor.

[0010] In one embodiment, an insulating portion is connected between the first conductive portion and the second conductive portion, and the insulating portion is configured to insulate the first conductive portion and the second conductive portion.

[0011] In one embodiment, a first gap is maintained between the first conductive portion and the second conductive portion, and the first conductive portion and the second conductive portion are insulated through the first gap.

[0012] In one embodiment, the aerosol generating device further includes a heat insulating tube, the heat insulating tube includes an inner wall and an outer wall, the inner wall defines a receiving chamber for receiving the aerosol generating article, and a second gap is maintained between the inner wall and the outer wall, and the heating tube is located in the second gap.

[0013] In one embodiment, the areas of the first conductive portion and the second conductive portion are substantially the same.

[0014] In one embodiment, an insulating layer is attached to the outer surface of the heating tube, a heating element is attached to the insulating layer, and the heating tube transfers the heat generated by the heating element to the aerosol generating article.

[0015] In one embodiment, the insulating layer has adhesiveness, and the insulating layer circumferentially covers the outer surfaces of the first conductive portion and the second conductive portion, thereby connecting the first conductive portion and the second conductive portion into one body.

[0016] In one embodiment, the capacitor includes a first capacitor and a second capacitor, the first capacitor and the second capacitor are spaced apart along the longitudinal direction of the heating tube, and the controller is configured to control the start or stop of heating of the aerosol generating device based on the change in the capacitance values of the first capacitor and the second capacitor.

[0017] In one embodiment, the two electrode plates of the first capacitor and the second capacitor are configured to heat the aerosol generating article independently or simultaneously.

[0018] In one embodiment, the distances between the two electrode plates of the first capacitor and the second capacitor are substantially the same.

[0019] At least one embodiment of the present application further provides an aerosol generating device, including:

[0020] A capacitor has a first electrode plate and a second electrode plate. The first electrode plate and the second electrode plate enclose a chamber for accommodating an aerosol-generating article, and the first electrode plate and the second electrode plate can also generate or transfer heat to heat the aerosol-generating article in the chamber to generate aerosol;

[0021] A controller is configured to receive the capacitance value of the capacitor and control the aerosol-generating device to start or stop heating based on the change in the capacitance value.

[0022] For the aerosol-generating device provided in the above embodiment, by configuring two electrode plates of the capacitor as at least a part of a heating tube, when the aerosol-generating article is accommodated in the chamber, on the one hand, the heating tube can detect whether the aerosol-generating article is accommodated in the chamber through the change in the capacitance value of the capacitor, and on the other hand, it can also heat the aerosol-generating article, eliminating the need to set up an additional capacitor to detect whether the aerosol-generating article is accommodated in the chamber, thereby reducing the manufacturing cost of the aerosol-generating device.

Description of the Drawings

[0023] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements, unless otherwise stated, and the drawings in the figures do not constitute a proportional limitation.

[0024] Figure 1 It is a schematic structural diagram of an aerosol-generating device provided by an embodiment of the present application;

[0025] Figure 2 For an embodiment of the present application Figure 1 a schematic structural diagram of a heating tube therein;

[0026] Figure 3 For another embodiment of the present application Figure 1 a schematic structural diagram of a heating tube therein;

[0027] Figure 4 It is a schematic structural diagram of an aerosol-generating device provided by another embodiment of the present application;

[0028] Figure 5 It is a schematic structural diagram of an aerosol-generating device provided by yet another embodiment of the present application;

[0029] Figure 6 It is a schematic structural diagram of a heating tube provided by another embodiment of the present application;

[0030] Figure 7 It includes Figure 6 a schematic structural diagram of an aerosol-generating device with the heating tube therein.

Detailed Embodiments

[0031] For ease of 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 described as "fixed to" / "secured 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 described 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", "left", "right", "inner", "outer" and similar expressions used in this specification are for illustrative purposes only.

[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 this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this 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] In an embodiment of the present application, the "installation" includes fixing or restricting a certain element or device to a specific position or place by means such as welding, screwing, clamping, bonding, etc. The element or device can remain stationary at the specific position or place or can move within a limited range. After the element or device is fixed or restricted to the specific position or place, it can be disassembled or cannot be disassembled, which is not limited in the embodiments of the present application.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0036] An embodiment of the present application provides an aerosol generating device 100, as Figure 1As shown, the aerosol generating device 100 includes a battery cell 10, a main board 20, a heating element 30, and a heating tube 40. A controller of the aerosol generating device 100 is provided on the main board 20. The battery cell 10 and the heating element 30 are electrically connected to the controller respectively, so that the controller can control the battery cell 10 to supply electric energy to the heating element 30. The heating tube 40 defines a longitudinally extending chamber 41 for accommodating an aerosol generating article 200 used in conjunction with the aerosol generating device 100. The heating element 30 is attached to the outer wall of the heating tube 40. When the aerosol generating article 200 is accommodated in the heating tube 40, the controller controls the heating element 30 to start heating to generate heat, and the heat is transferred to the heating tube 40, and then the heating tube 40 transfers the heat to the aerosol generating article 200 in the chamber 41. Part of the active substance filled in the aerosol generating article 200 volatilizes when heated to generate aerosol. The battery cell 10 serves as the power supply of the aerosol generating device 10, and it can be a rechargeable battery cell or a non-rechargeable battery cell.

[0037] The aerosol generating device 100 further includes an air passage 50 that communicates the chamber 41 with the outside air. When the user sucks on the aerosol generating article 200, outside air enters the chamber 41 through the air passage 50, and further enters the aerosol generating article 200, and then carries the aerosol in the aerosol generating article 200 and escapes along the air flow passage in the aerosol generating article 200 for the user to inhale.

[0038] The aerosol generating article 200 preferably uses a tobacco-containing material that releases volatile compounds from the article when heated; or it can also be a non-tobacco material that is suitable for electric heating and smoking after heating. The aerosol generating article 200 preferably uses a solid matrix, which can include one or more of powder, granule, fragment, fine strip, strip or flake of vanilla leaf, tobacco leaf, homogenized tobacco, expanded tobacco, etc.; or the solid matrix can contain additional tobacco or non-tobacco volatile flavor compounds to be released when the matrix is heated.

[0039] In some embodiments, the heating element 30 is a resistive heating wire attached to the outer wall of the heating tube 40, or any one of thick film heating materials, infrared electrothermal coatings, etc.

[0040] In some embodiments, the aerosol generating device 100 can also heat the aerosol generating article 200 by electromagnetic induction heating. A coil (not shown in the figure) is wound around the outside of the heating tube 40. The controller controls the battery cell 10 to pass an alternating current through the coil. The coil generates a changing magnetic field under the action of the alternating current. The changing magnetic field penetrates the heating tube 40 and then induces eddy currents in the heating tube 40. The heating tube 40 generates heat under the action of the eddy current effect and the hysteresis effect, and then can heat the aerosol generating article 200.

[0041] To induce eddy currents on the heating tube 40, the material of the heating tube 40 can be any one of graphite, molybdenum, silicon carbide, stainless steel, niobium, aluminum, nickel, iron, copper, nickel-containing compounds, titanium, and metal material composites. In some embodiments, to better induce eddy currents to improve the heating efficiency, the material of the heating tube 40 is preferably made of or composed of ferromagnetic materials, such as ferrite iron, ferromagnetic alloys (such as ferromagnetic steel or stainless steel), ferromagnetic particles, and ferrites.

[0042] As Figure 2 shown, the heating tube 40 includes a first conductive portion 42 and a second conductive portion 43 that are spaced apart and insulated from each other. The first conductive portion 42 and the second conductive portion 43 enclose a chamber 41. A first gap 44 is maintained between the first conductive portion 42 and the second conductive portion 43. Thus, the first conductive portion 42 and the second conductive portion 43 can be insulated from each other through the first gap 44. Further, the first conductive portion 42, the second conductive portion 43, and the insulating medium therebetween can form a capacitor in combination. The first conductive portion 42 and the second conductive portion 43 can serve as the two electrodes of the capacitor. At the same time, from the foregoing, it can be seen that the first conductive portion 42 and the second conductive portion 43 can also generate or transfer heat to heat the aerosol generating article 200 in the chamber 41.

[0043] The aerosol generating device 100 further includes a capacitance sensor or a capacitance detection circuit for detecting the capacitance value of the above capacitor. The capacitance sensor or the capacitance detection circuit is electrically connected to the controller, and then the detected capacitance value of the capacitor is sent to the controller, and the controller can obtain the capacitance value of the capacitor.

[0044] When the aerosol generating article 200 is not received in the chamber 41, the insulating medium between the first conductive portion 42 and the second conductive portion 43, that is, between the two electrodes of the capacitor, is air. When the aerosol generating article 200 is received in the chamber 41, the insulating medium between the first conductive portion 42 and the second conductive portion 43 changes from air to the aerosol generating article 200. Since the insulating medium between the two electrodes of the capacitor changes, the capacitance value of the capacitor will change. The controller can determine that the aerosol generating article 200 has been received in the chamber 41 based on the change in the capacitance value of the capacitor. Then, the controller can control the power supply 10 to supply electrical energy to the heating element 30 or to the coil, so that the first conductive portion 42 and the second conductive portion 43 generate heat by themselves or transfer the heat of the heating element 30 to heat the aerosol generating article 200 in the chamber 41.

[0045] Specifically, a change threshold value of the capacitance value can be pre-stored in the controller. When the aerosol generating article 200 is received in the chamber 41, the capacitance value changes. The controller can obtain the change amount of the capacitance value for any two times, and compare this change amount with the preset change threshold value. If the change amount is within the preset change threshold range, the controller can confirm that the aerosol generating article 200 is received in the chamber 41.

[0046] When the aerosol generating article 200 is removed from the chamber 41, the insulating matrix between the first conductive part 42 and the second conductive part 43 changes back to air from the aerosol generating article 200, and the capacitance value of the capacitor changes again. The controller can then determine that the aerosol generating article 200 has been removed from the chamber 41 based on this change, so the controller can control the aerosol generating device 100 to stop heating.

[0047] It should be noted that since the first conductive part 42 and the second conductive part 43 need to generate or transfer heat to heat the aerosol generating article 200 on the one hand, and on the other hand, act as two electrodes of the capacitor to store charge, the first conductive part 42 and the second conductive part 43 are preferably made of any one of metal materials such as copper, aluminum, iron, silver, stainless steel, etc., so that the first conductive part 42 and the second conductive part 43 can not only efficiently heat the aerosol generating article 200 to make it fully volatilize, but also fully store charge to form a capacitor.

[0048] In this embodiment, by constructing two electrodes of the capacitor as at least a part of the heating tube 40, when the aerosol generating article 200 is received in the chamber 41, the heating tube 40 can, on the one hand, detect whether the aerosol generating article 200 is received in the chamber 41 through the change of the capacitance value of the capacitor, and on the other hand, heat the aerosol generating article 200. There is no need to set an additional capacitor to detect whether the aerosol generating article 200 is received in the chamber, reducing the manufacturing cost of the aerosol generating device 100.

[0049] In some embodiments, as Figure 3 shown, an insulating part 45 is connected between the first conductive part 42 and the second conductive part 43. The insulating part 45 is used to block the first gap 44 between the first conductive part 42 and the second conductive part 42. The first conductive part 42, the second conductive part 43 and the insulating part 45 are combined to form a complete heating tube 40, and the first conductive part 42 and the second conductive part 43 can be insulated from each other through the insulating part 45. By providing the insulating part 45, on the one hand, it can prevent the external air entering the chamber 41 from leaking out through the first gap 44, resulting in a decrease in the concentration of the aerosol sucked and affecting the sucking taste; on the other hand, it can also prevent the heat from dissipating through the first gap 44, resulting in insufficient heating of the aerosol generating article 200.

[0050] The insulating portion 45 can be fixed between the first conductive portion 42 and the second conductive portion 43 by using an independent component. For example, a clamping groove (not shown in the figure) can be provided on the first conductive portion 42 and the second conductive portion 43, and a clamping member (not shown in the figure) can be provided on the insulating member 45. The insulating portion 45 is fixed between the first conductive portion 42 and the second conductive portion 43 through the snap connection between the clamping member and the clamping groove. Alternatively, the insulating portion 45 can also be injection-molded together with the first conductive portion 42 and the second conductive portion 43 into the heating tube 40.

[0051] In some embodiments, as Figure 5 shown, the aerosol generating device 100 further includes a heat insulating tube 60. The heat insulating tube 60 includes an outer wall 61 and an inner wall 62. The inner wall 62 defines a receiving chamber 63 for receiving the aerosol generating article 200. A second gap 64 is formed between the outer wall 61 and the inner wall 62. The heating element 30 and the heating tube 40 are disposed in the second gap 64. The first conductive portion 42 and the second conductive portion 43 are disposed around the inner wall 62, so that the chamber 41 formed by enclosing the first conductive portion 42 and the second conductive portion 43 and the receiving chamber 63 are substantially coincident. Furthermore, when the aerosol generating article 200 is received in the receiving chamber 63, the aerosol generating article 200 will surely fall into the chamber 41 formed by the first conductive portion 42 and the second conductive portion 43.

[0052] By disposing the heating tube 40 in the second gap 64 of the heat insulating tube 60, it is possible to prevent external air and heat from leaking out from the first gap 44 of the heating tube 40.

[0053] In some embodiments, as Figure 2 and Figure 3 shown, the areas of the first conductive portion 42 and the second conductive portion 43 are substantially the same, that is, the heating tube 40 is divided into the spaced-apart first conductive portion 42 and the second conductive portion 43 from the middle region of the heating tube 40. Furthermore, on the one hand, when the aerosol generating article 200 is received in the chamber 41, the aerosol generating article 200 receives substantially the same amount of heat from the first conductive portion 42 and the second conductive portion 43, and the aerosol generating article 200 can be heated evenly in the chamber 41. On the other hand, when the aerosol generating article 200 is received in the chamber 41 or removed from the chamber 41, the same areas of the first conductive portion 42 and the second conductive portion 43 can make the change in the capacitance value of the capacitor more obvious, thereby improving the accuracy of detecting whether the aerosol generating article 200 is inserted into the chamber 41.

[0054] In some embodiments, as Figure 4As shown, to avoid the risk of short - circuit caused by the direct contact between the outer surfaces of the heating element 30 and the heating tube 40, an insulating layer 70 is coated on the outer surface of the heating tube 40, and the heating element 30 is attached to the insulating layer 70, thereby insulating the heating element 30 and the heating tube 40. The insulating layer 70 is made of a material with high thermal conductivity to reduce the blockage of heat on the heating element 30.

[0055] Furthermore, in some embodiments, the insulating layer 70 also has adhesiveness, so that the first conductive part 42 and the second conductive part 43 can be connected together through the adhesiveness of the insulating layer 70, and then the heating tube 40 forms an independent tube assembly. A suitable insulating layer 70 can be any one of insulating tapes, insulating adhesives, heat - conducting pads, etc.

[0056] In some embodiments, as Figure 6 and Figure 7 shown, the first conductive part 42 includes two, and the two first conductive parts 42 are arranged at intervals in the longitudinal direction. The second conductive part 43 also includes two, and the two second conductive parts 43 are also arranged at intervals in the longitudinal direction. Thus, the upper first conductive part 42a and the second conductive part 43a are arranged opposite to each other to form a first capacitor 80, and the first conductive part 42a and the second conductive part 43a are the two plates of the first capacitor 80. The lower first conductive part 42b and the second conductive part 43b are arranged opposite to each other to form a second capacitor 90, and the first conductive part 42b and the second conductive part 43b are the two plates of the second capacitor 90. Furthermore, the first capacitor 80 and the second capacitor 90 are arranged at intervals in the longitudinal direction of the heating tube 40, and there is a gap 8 between the first capacitor 80 and the second capacitor 90. That is to say, at least a part of the heating tube 40 is formed by the combination of the first capacitor 80 and the second capacitor 90, and the first capacitor 80 and the second capacitor 90 are arranged at intervals in the longitudinal direction of the heating tube 40.

[0057] In the way of this embodiment, the controller can also confirm that the aerosol - generating device 100 has been completely received in the chamber 41. Specifically, during the process of receiving the aerosol - generating article 200 in the chamber 41, when the controller only monitors that the capacitance value of the first capacitor 80 changes as expected, while the capacitance value of the second capacitor 90 does not change, the controller determines that the aerosol - generating article 200 has not been completely received in the chamber 41 at this time, and at this time the controller controls the aerosol - generating device 100 not to start heating. When the controller monitors that the capacitance values of both the first capacitor 80 and the second capacitor 90 change as expected, the controller determines that the aerosol - generating article 200 has been completely received in the chamber 41, and at this time the controller can control the aerosol - generating device 100 to start heating.

[0058] In addition, when the aerosol generating device 100 is started in a hot start state, the hot start state means that the temperature on the heating tube 40 is still relatively high. At this time, the temperatures of the first conductive part 42 and the second conductive part 43 are also relatively high. As a result, the capacitance value of the capacitor will shift under the influence of temperature. Judging whether the aerosol generating article 200 is inserted into the chamber 41 only by the change in the capacitance value of one capacitor is likely to cause misjudgment. However, with the first capacitor 80 and the second capacitor 90 of this embodiment, since the first capacitor 80 and the second capacitor 90 are both in the hot start state, the change situations of the two sets of capacitance values of the first capacitor 80 and the second capacitor 90 can be combined for judgment, the influence of temperature on the capacitance value shift can be eliminated, and thus the accuracy of judgment in the hot start state can be improved.

[0059] Further, in some embodiments, the two plates of the first capacitor 80 and the second capacitor 90 can be configured to heat the aerosol generating article 200 simultaneously, or independently heat the aerosol generating article 200. When independently heating the aerosol generating article 200, the two plates of the first capacitor 80 and the second capacitor 90 can heat different sections of the aerosol generating article 200 at different times.

[0060] For example, when the controller detects that the aerosol generating article 200 is completely received in the chamber 41, the controller first controls the two plates of the lower second capacitor 90 to heat the bottom of the aerosol generating article 200 first. When heated for a predetermined time, the controller controls the two plates of the second capacitor 90 to stop heating and starts the two plates of the first capacitor 80 to heat the side of the aerosol generating article 200, so that the aerosol generating article 200 can be heated evenly as a whole, which is beneficial to improving the suction taste of the aerosol.

[0061] And, in some embodiments, as Figure 6 shown, the distances between the two plates of the first capacitor 80 and the second capacitor 90 are basically the same, so that when the aerosol generating article 200 is received in the chamber 41, the change amounts of the capacitance values of the first capacitor 80 and the second capacitor 90 are also basically the same, which is convenient for the controller to make a judgment.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present application as described above. For the sake of brevity, they are not provided in detail; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present application.

Claims

1. An aerosol generating device, characterized in that, Comprising: A heating tube, including a first conductive part and a second conductive part that are spaced apart and insulated from each other. The first conductive part and the second conductive part enclose a chamber for accommodating an aerosol generating article, and the first conductive part and the second conductive part can generate or transfer heat to heat the aerosol generating article to generate aerosol; A capacitor configured to have its capacitance value change when the aerosol generating article is accommodated in the chamber or removed from the chamber; A controller configured to receive the capacitance value of the capacitor and control the start or stop of heating of the aerosol generating device based on the change in the capacitance value; Wherein, the first conductive part and the second conductive part serve as two electrodes of the capacitor.

2. The aerosol generating device according to claim 1, wherein An insulating part is connected between the first conductive part and the second conductive part, and the insulating part is used to insulate the first conductive part and the second conductive part.

3. The aerosol generating device according to claim 1, characterized in that, A first gap is maintained between the first conductive part and the second conductive part, and the first conductive part and the second conductive part are insulated through the first gap.

4. The aerosol generating device according to claim 3, wherein, The aerosol generating device further includes a heat insulating tube, the heat insulating tube includes an inner wall and an outer wall, the inner wall defines a receiving chamber for accommodating the aerosol generating article, a second gap is maintained between the inner wall and the outer wall, and the heating tube is located in the second gap.

5. The aerosol generating device according to claim 1, characterized in that, The areas of the first conductive part and the second conductive part are substantially the same.

6. The aerosol generating device according to claim 1, wherein, An insulating layer is attached to the outer surface of the heating tube, and a heating element is attached to the insulating layer, and the heating tube transfers the heat generated by the heating element to the aerosol generating article.

7. The aerosol generating device according to claim 6, wherein The insulating layer has adhesiveness, and the insulating layer circumferentially wraps the outer surfaces of the first conductive part and the second conductive part, thereby connecting the first conductive part and the second conductive part into one body.

8. The aerosol generating device according to claim 1, wherein, The capacitor includes a first capacitor and a second capacitor, the first capacitor and the second capacitor are spaced apart along the longitudinal direction of the heating tube, and the controller is configured to control the start or stop of heating of the aerosol generating device based on the change in the capacitance values of the first capacitor and the second capacitor.

9. The aerosol generating device according to claim 8, wherein, The two electrodes of the first capacitor and the second capacitor are configured to heat the aerosol generating article independently or simultaneously.

10. The aerosol generating device according to claim 8, characterized in that, The distances between the two electrodes of the first capacitor and the second capacitor are substantially the same.

11. An aerosol generating device, characterized in that, Comprising: A capacitor having a first electrode and a second electrode, the first electrode and the second electrode enclose a chamber for accommodating an aerosol generating article, and the first electrode and the second electrode can also generate or transfer heat to heat the aerosol generating article in the chamber to generate aerosol; A controller configured to receive the capacitance value of the capacitor and control the start or stop of heating of the aerosol generating device based on the change in the capacitance value.

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