Heating components and aerosol forming devices

Abstract

The present application provides a heating assembly and an aerosol-forming device. The heating assembly comprises a substrate and a heating element. The heating element is embedded in the substrate and comprises a first extension portion spaced apart from one another and a second extension portion connected to one end of the first extension portion. The substrate and the heating element are configured to at least partially insert into an aerosol-forming substrate and, when the first and second extension portions are energized, generate heat to heat the aerosol-forming substrate. The heating element in the heating assembly can be directly inserted into the aerosol-forming substrate, providing good stability.

Description

Technical Field

[0001] The present invention relates to the technical field of heat-not-burn smoking equipment, and in particular to a heating component and an aerosol forming device. Background Art

[0002] As a substitute for cigarettes, electronic cigarettes are gaining more and more attention and favor due to their advantages such as safety, convenience, health and environmental protection. For example, heat-not-burn electronic cigarettes, also known as heat-not-burn aerosol-forming devices.

[0003] Existing heat-not-burn aerosol-forming devices typically use either tubular peripheral heating or centrally embedded heating. Tubular peripheral heating involves surrounding a heating tube around an aerosol-forming substrate (e.g., tobacco) to heat the substrate, while centrally embedded heating involves inserting a heating element into the aerosol-forming substrate to heat the substrate. Heating elements are widely used due to their simplicity of manufacture and ease of use. Current heating elements primarily utilize ceramic or insulated metal as a substrate, with a resistive heating circuit printed or plated onto the substrate. This circuit is then fixed to the substrate after high-temperature treatment.

[0004] However, since the resistive heating circuit on the existing heating component is a thin film that is later printed or plated on the ceramic substrate, during the use of the heating component repeatedly inserted into the aerosol-forming matrix, due to the curved shape of the substrate, the resistive heating circuit is easily detached from the substrate when subjected to high-temperature heating, resulting in poor stability. In addition, during the heating process, the resistive heating circuit only contacts the aerosol-forming matrix on the side of the substrate where the resistive heating circuit is provided, but not the aerosol-forming matrix on the back side of the substrate, resulting in poor heating uniformity of the aerosol-forming matrix. Summary of the Invention

[0005] The present application provides a heating component and an aerosol forming device, which can solve the problem that the resistance heating circuit on the existing heating component is easy to fall off from the substrate when heated at high temperature and has poor stability.

[0006] To address the above-mentioned technical issues, the present application adopts a technical solution: providing a heating assembly. The heating assembly comprises a substrate and a heating element; the heating element is embedded in the substrate and comprises a first extension portion spaced apart from one another and a second extension portion connected to one end of the first extension portion. The substrate and the heating element are configured to at least partially insert an aerosol-forming substrate, and when the first and second extension portions are energized, heat is generated to heat the aerosol-forming substrate.

[0007] In order to solve the above technical problems, another technical solution adopted in this application is: to provide an aerosol forming device, which includes a shell and a heating component and a power supply component arranged in the shell; wherein the power supply component is connected to the heating component for supplying power to the heating component, and the heating component is the heating component involved above.

[0008] The heating component and aerosol-forming device provided by the present application are characterized in that the heating component heats the tobacco in the aerosol-forming matrix through the heating element by providing a substrate and a heating element after the aerosol-forming matrix is inserted; at the same time, the heating element is provided to include a first extension portion and a second extension portion connected to the first extension portion, and the first extension portion and the second extension portion of the substrate and the heating element are used to at least partially insert into the aerosol-forming matrix and generate heat when energized to heat the aerosol-forming matrix; compared with the existing heating elements silk-screened on ceramic substrates, the substrate and the heating element of the present application can be directly and independently inserted into the aerosol-forming matrix, and there will be no problem of the heating element falling off from the ceramic substrate and causing failure during high-temperature heating, thereby greatly improving the stability of the heating component; in addition, by providing a substrate, the heating element is embedded in the substrate to improve the strength of the heating component, so that the heating component can be subjected to force through the substrate during the insertion of the aerosol-forming matrix, effectively avoiding the problem of the heating element bending due to force. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1a A schematic structural diagram of a heating component provided in one embodiment of the present application;

[0010] Figure 1b A schematic structural diagram of a heating element provided in one embodiment of the present application;

[0011] Figure 1c A schematic plan view of a heating component provided in a specific embodiment of the present application;

[0012] Figure 1d A schematic plan view of a heating component provided in another specific embodiment of the present application;

[0013] Figure 1e A schematic plan view of a heating component provided in another specific embodiment of the present application;

[0014] Figure 2 Provided for an embodiment of this application Figure 1a A disassembled schematic diagram of the structure shown;

[0015] Figure 3a Another embodiment of the present application provides Figure 1a A disassembled schematic diagram of the structure shown;

[0016] Figure 3bA schematic diagram of inserting a heating component into an aerosol atomizing matrix according to an embodiment of the present application;

[0017] Figure 4 A schematic diagram of the position between the substrate and the heating element provided in one embodiment of the present application;

[0018] Figure 5 A schematic diagram of a disassembled heating component provided in a specific embodiment of the present application;

[0019] Figure 6 A disassembled schematic diagram of a heating component provided in another specific embodiment of the present application;

[0020] Figure 7 A side view of a heating element provided in one embodiment of the present application;

[0021] Figure 8 A schematic diagram of the dimensions of a heating component provided in one embodiment of the present application;

[0022] Figure 9 for Figure 8 C-direction view of the structure shown;

[0023] Figure 10a A schematic structural diagram of a heating component provided in another embodiment of the present application;

[0024] Figure 10b A schematic diagram of inserting a heating component into an aerosol atomizing matrix according to another embodiment of the present application;

[0025] Figure 11 A schematic structural diagram of a heating component provided in yet another embodiment of the present application;

[0026] Figure 12 A schematic diagram of the dimensions of a heating component provided in another embodiment of the present application;

[0027] Figure 13 A schematic diagram of the structure of the mounting base and the heating component after assembly according to an embodiment of the present application;

[0028] Figure 14 for Figure 13 The corresponding product disassembly diagram;

[0029] Figure 15 A schematic diagram of the structure of a mounting base and a heating component after assembly according to another embodiment of the present application;

[0030] Figure 16 for Figure 15 Schematic diagram of the corresponding product disassembly;

[0031] Figure 17 A front view of the mounting base and the heating component after assembly according to an embodiment of the present application;

[0032] Figure 18 A schematic structural diagram of an aerosol forming device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] The terms "first," "second," and "third" in this application are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "multiple" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications also change accordingly. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products, or devices.

[0035] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0037] See also Figures 1a to 3a ,in, Figure 1a A schematic structural diagram of a heating component 30 provided in one embodiment of the present application; Figure 2 Provided for an embodiment of this application Figure 1a A disassembled schematic diagram of the structure shown; Figure 3aAnother embodiment of the present application provides Figure 1a Schematic diagram of the disassembly of the structure shown; in this embodiment, a heating component 30 is provided, and the heating component 30 is specifically used to insert and heat the aerosol-forming matrix; for example, in a specific embodiment, the heating component 10 can be specifically used to insert tobacco to heat the tobacco, and the following embodiments are all taken as an example; it can be understood that, in this embodiment, the aerosol-forming matrix can specifically be tobacco.

[0038] Specifically, the heating component 30 includes a substrate 31 and a heating element 32 embedded in the substrate 31 .

[0039] Among them, the substrate 31 can be specifically a rectangular substrate 31, which has a first end M and a second end N arranged opposite to the first end M; when the heating component 30 is inserted into the aerosol-forming matrix, the second end N of the substrate 31 is first inserted into the aerosol-forming matrix. Therefore, in order to facilitate the insertion of the heating component 30 into the aerosol-forming matrix, the second end N of the substrate 31 can be specifically set to a pointed end, that is, a triangular structure, and the angle formed by the two adjacent sides of the pointed end can be specifically 45 degrees to 90 degrees, for example 60 degrees.

[0040] Specifically, the material of the substrate 31 can be insulating ceramic. The thermal conductivity of the substrate 31 made of insulating ceramic can be 4-18 W / (mk), the flexural strength can be above 600 MPa, the thermal stability can exceed 450 degrees, and the fire resistance can be higher than 1450 degrees. Of course, in other embodiments, the substrate 31 can also be a metal that has been insulated, for example, a metal substrate provided with an insulating coating, so as to improve the strength of the heating component 30 and prevent the heating component 30 from bending or breaking, while allowing the heat generated by the heating element 32 to diffuse to the tobacco in contact with the substrate 31, thereby improving the heating uniformity of the tobacco in the aerosol-forming matrix. The material of the substrate 31 can also be a new composite zirconia material. The new composite zirconia substrate 31 can insulate and transfer the heat generated by the heating element 32 to provide energy utilization of the heating component 30. The ceramic substrate 31 can also be a ZTA material (zirconia toughened alumina ceramic) or MTA (mullite and alumina composite).

[0041] In one specific embodiment, the substrate 31 is provided with a receiving groove 311 along its length, and at least a portion of the heating element 32 is received in the receiving groove 311, so that during the insertion of the heating component 30 into the aerosol-forming matrix, the substrate 31 is subjected to force, thereby preventing the heating element 32 from being bent due to direct force.

[0042] Specifically, the substrate 31 has a first surface C1 and a second surface D1 opposite to the first surface C1. The accommodating groove 311 can be a through groove that passes through the first surface C1 and the second surface D1. The heating element 32 is specifically accommodated in the through groove and the upper and lower surfaces of the heating element 32 are flush with the first surface C1 and the second surface D1 of the substrate 31. By setting the accommodating groove 311 as a through groove structure, the heating element 32 accommodated in the accommodating groove 311 can be exposed from one side of the first surface C1 and the second surface D1 of the substrate 31 respectively, so that after the heating element 32 is inserted into the aerosol-forming matrix, both surfaces of the heating element 32 can be in direct contact with the tobacco in the aerosol-forming matrix, which not only has high energy utilization efficiency, but also has relatively uniform heating and clear boundaries of the preset temperature field.

[0043] In other embodiments, according to the actual needs of the temperature field distribution during heating, the upper and lower surfaces of the heating element 32 can be slightly protruded from the first surface C1 and the second surface D1 of the substrate 31, or slightly lower than the first surface C1 and the second surface D1 of the substrate 31, respectively. In this way, when the upper and lower surfaces of the heating element 32 slightly protrude from the first surface C1 and the second surface C2 of the substrate 31, the higher temperature of the heating element 32 can be concentrated on the upper and lower surfaces of the heating element 32 and the upper and lower surfaces thereof contacting the tobacco can be baked at a higher temperature, thereby making the smoke meet a stronger demand; and when the upper and lower surfaces of the heating element 32 are slightly lower than the first surface C1 and the second surface C2 of the substrate 31, due to the barrier effect of the substrate 31, the upper and lower surfaces of the heating element 32 can be in looser contact with the tobacco, and the baking temperature of the tobacco by the heating element 32 can be slightly reduced, thereby meeting the demand for softer smoke.

[0044] Among them, the heating element 32 can be a self-supporting structure, that is, the heating element 32 can exist independently without relying on other carriers; compared with the existing resistive heating film layer formed by printing or coating on a ceramic substrate, the heating element 32 with a self-supporting structure can effectively avoid the problem of the heating element 32 falling off from the ceramic substrate or the metal substrate when subjected to high-temperature heating or when the substrate is deformed, thereby greatly improving the stability of the heating component 30; and because the heating element 32 is a self-supporting structure and can be exposed from one side of the first surface C1 and the second surface D1 of the substrate 31 at the same time, it effectively provides heat utilization and heating uniformity.

[0045] The material of the heating element 32 can be conductive ceramic. Compared with the existing metal material, the conductive ceramic heating element 32 has a higher conductivity efficiency and a more uniform temperature. The conductive ceramic heating element 32 can be adjusted and designed at 3-4 watts, and the conductivity can reach 1*10- 4 Ohm 1*10- 6Ohm, suitable for low-voltage starting, convenient for instant power control and design, and the conductive ceramic bending strength can be greater than 40MPa, and the fire resistance can be higher than 1200℃.

[0046] Specifically, the heating element 32 made of the conductive ceramic can be made of a material with an electromagnetic heating wavelength of the mid-infrared wavelength, which is conducive to atomizing the e-liquid and improving the taste; in addition, the crystal phase structure of the conductive ceramic heating element 32 is a high-temperature stable oxide ceramic. Since the oxide ceramic has good fatigue resistance, high strength and high density, it can effectively avoid the volatilization of harmful heavy metals and dust problems, thereby greatly improving the service life of the heating element 32.

[0047] The above-mentioned use of a whole ceramic heating element 32 can reduce the area of the highest temperature hot spot, eliminate the risk of fatigue cracking and increased fatigue resistance, and has good consistency; and due to the high strength of the ceramic heating material and the smoothness brought by the microcrystalline structure, the surface of the heating element 32 is easier to clean and less likely to stick; in addition, the ceramic heating element 32 is manufactured using a ceramic production process, and the ceramic process mainly includes raw material mixing, molding and sintering, and cutting processes. The process is relatively simple and easy to control, with low cost, which is conducive to the promotion of production and improvement of economic benefits.

[0048] Specifically, the heating element 32 made of the conductive ceramic includes a main component and a crystalline component. The main component is used to conduct electricity and give the conductive ceramic a certain resistance, and can be one or more of manganese, strontium, lanthanum, tin, antimony, zinc, bismuth, silicon, and titanium. The crystalline component, i.e., the main ingredient of the ceramic material, is mainly used to form the shape and structure of the conductive ceramic, and can be one or more of lanthanum manganate, strontium lanthanum manganate, tin oxide, zinc oxide, antimony oxide, bismuth oxide, silicon oxide, and yttrium oxide. In other embodiments, the heating element 32 can also be made of a metal alloy or a ceramic alloy made of sendust.

[0049] For details, see Figure 1b , Figure 1bA schematic structural diagram of a heating element provided in one embodiment of the present application; in one embodiment, the heating element 32 specifically includes a first extension portion 321 and a second extension portion 322 connected to the first extension portion 321, and in a specific embodiment, the first extension portion 321 and the second extension portion 322 are both used to at least partially insert into the aerosol-forming matrix and generate heat when energized to heat the aerosol-forming matrix; it is understandable that the first extension portion 321 and the second extension portion 322 can be independently and directly inserted into the aerosol-forming matrix, while the existing heating element silk-screened on the ceramic substrate needs to be inserted into the aerosol-forming matrix with the help of a ceramic or insulated metal substrate, and it itself cannot be directly inserted into the aerosol-forming device, and the first extension portion 321 and the second extension portion 322 provided in the present application will not cause the substrate 31 to deform or fall off from the substrate 31 when heated at high temperature, resulting in failure, thereby greatly improving the reliability of the heating component 10.

[0050] Specifically, the two opposite surfaces of the first extension portion 321 and the second extension portion 322 used to insert the aerosol-forming matrix are in contact with the aerosol; it can be understood that since the heating element 32 of the present application is directly inserted into the aerosol-forming matrix, it does not require the aid of a substrate. Therefore, at least two opposite surfaces of the first extension portion 321 and the second extension portion 322 of the heating element 32 can be directly in contact with the aerosol, thereby greatly improving the heat utilization rate and heating efficiency.

[0051] In another embodiment, see Figures 1a to 3a The heating element 32 further includes a third extension portion 323 for fully inserting and heating the aerosol-forming substrate. Specifically, in this embodiment, the first extension portion 321 and the second extension portion 322 are spaced apart and arranged in parallel, and the adjacent ends of the first extension portion 321 and the second extension portion 322 are connected by the third extension portion 323. The adjacent ends of the first extension portion 321 and the second extension portion 322 specifically refer to the ends that first contact and insert the aerosol-forming substrate. It is understood that the first extension portion 321, the second extension portion 322, and the third extension portion 323 form a generally U-shaped structure. In a specific embodiment, the first extension portion 321, the second extension portion 322, and the third extension portion 323 are integrally formed and sintered from conductive ceramic. Specifically, the substrate 31 of the heating element 32 can be cut by laser cutting to form the groove 328, thereby obtaining the heating element 32 having the first extension portion 321, the second extension portion 322, and the third extension portion 323. It is understood that the heating element 32 can also be directly sintered.

[0052] The shapes of the first extension portion 321, the second extension portion 322, and the third extension portion 323 are not limited and can be designed according to actual needs. Specifically, the first extension portion 321 and the second extension portion 322 can be long strips; since the substrate 31 has a pointed end, the third extension portion 323 can be a curved plate, the inner circle radius of which can be 0.5 mm and the outer circle radius can be 2 mm; wherein the outer circle refers to the position where the third connection portion 323 of the heating element 32 contacts the substrate 31. The advantage of using a curved plate is that the connection stress with the first extension portion 321 and the second extension portion 322 is small, and the overall structural strength is better.

[0053] In this embodiment, the third extension portion 323 is generally V-shaped. In other embodiments, the third extension portion 323 may also be U-shaped, an isosceles trapezoid, or other shapes whose width gradually decreases from the end closest to the first extension portion 321 and the second extension portion 322 toward the direction away from the first extension portion 321 and the second extension portion 322. In this embodiment, the first extension portion 321, the second extension portion 322, and the third extension portion 323 define a slot 328. The slot 328 is a rectangle with uniform width or a convex guide arc formed at the end of the rectangle close to the third extension portion 323. Specifically, the slot 328 is an axisymmetric structure with its length parallel to its central axis. The first extension portion 321 and the second extension portion 322 are spaced apart and arranged in parallel with each other, and their lengths are parallel to the central axis of the slot 328. The widths of the first extension portion 321, the second extension portion 322, and the third extension portion 323 are perpendicular to the central axis of the slot 328. The heating element 32 is a structure that is symmetrical about the central axis of the groove 328, that is, the first extension part 321, the second extension part 322 and the third extension part 323 are all symmetrical about the central axis of the groove 328. This structure ensures that the temperatures of the corresponding positions in the width direction of the first extension part 321, the second extension part 322 and the third extension part 323 on both sides of the groove 328 are consistent, making the smoke taste better.

[0054] In other embodiments, see Figure 1c , Figure 1c This is a schematic plan view of a heating component according to a specific embodiment of the present application. The first extension 321 and the second extension 322 are similarly arranged side by side, but the width of the slot 328 can be arranged in a centrally symmetrical structure, with the width gradually decreasing from the end away from the third extension 323 to the end closer to the third extension 323. The outer edges of the corresponding first and second extensions 321 and 322 are parallel, and the width gradually increases from the end away from the third extension 323 to the end closer to the third extension 323. This slightly increases the resistance of the end away from the third extension 323 to balance the resistance between the end and the third extension 323 (the third extension 323 has a larger resistance), resulting in more balanced heating overall.

[0055] In other embodiments, see Figure 1d , Figure 1d A planar schematic diagram of a heating component provided for another specific embodiment of the present application; the groove 328 can be a centrally symmetrical structure that gradually increases from the end away from the third extension portion 323 to the end close to the third extension portion 323, and the corresponding outer sides of the first extension portion 321 and the second extension portion 322 are parallel, and the width of the first extension portion 321 and the second extension portion 322 gradually decreases from the end away from the third extension portion 323 to the end close to the third extension portion 323, so that the resistance near the upper end of the heating element 32 is larger, so as to meet the design requirements of the heating method in which the high temperature of the heating element 32 is more concentrated in the middle and upper part of the heating element 32.

[0056] In other embodiments, see Figure 1e , Figure 1e A planar schematic diagram of a heating component provided for another specific embodiment of the present application; the first extension portion 321 and the second extension portion 322 are rectangular, but are not arranged in parallel, but are arranged at a certain angle, such as 3-10 degrees. At this time, the width of the groove 328 can be a centrally symmetrical structure that gradually decreases from the end away from the third extension portion 323 to the end close to the third extension portion 323.

[0057] See also Figure 2 The above-mentioned accommodating groove 311 has an open end and a closed end, and the accommodating groove 311 specifically extends from the first end M of the substrate 31 to a position close to the second end N; and in one embodiment, the end of the accommodating groove 311 away from the second end N of the substrate 31 is an open end, and the end of the accommodating groove 311 close to the second end N of the substrate 31 is a closed end. By setting one end of the accommodating groove 311 as an open end, the problem of stress release when the heating element 32 and the substrate 31 are sintered together can be prevented. For example, when no opening is provided, the slight stress of the heating element 32 may squeeze the substrate 31. In addition, when the first end M is an open end, it is also convenient for the conductive ceramic to connect the electrode lead (not shown). In this embodiment, the accommodating groove 311 is specifically a U-shaped structure; in this embodiment, the third extension portion 323 of the heating element 32 is provided at a position close to the closed end of the accommodating groove 311, and the position close to the closed end of the substrate 31 has a pointed end to facilitate the insertion of the aerosol-forming matrix.

[0058] In another embodiment, see Figure 4 , Figure 4 Schematic diagram of the position between the substrate and the heating element provided in one embodiment of the present application. The end of the through-slot away from the second end N of the substrate 31 can also be a closed end, while the end of the through-slot close to the second end N of the substrate 31 is an open end. In this embodiment, the third extension portion 323 of the heating element 32 can extend from the open end of the through-slot and form a tip. For specific structure, please refer to Figure 4Of course, in other embodiments, both ends of the through groove may be closed ends, that is, the accommodating groove 311 is a through hole.

[0059] For details, see Figure 1a and Figure 2 The heating element 32 may be a plate structure, which may be a heating plate made of conductive ceramics. The resistivity of the ceramic used in the heating plate may be 5*10- 5 Ohm, the design power can be 2 watts, and the resistance can be 0.71 ohm; specifically, the heating plate can be a single series type, that is, the first extension part 321, the third extension part 323 and the second extension part 322 are connected in series in sequence (with a slot in the middle).

[0060] In one embodiment, see Figure 5 and Figure 6 ,in, Figure 5 A schematic diagram of a disassembled heating component provided in a specific embodiment of the present application; Figure 6 This is a schematic diagram of a disassembled heating element provided in another embodiment of the present application. An adhesive layer 34 is provided adjacent to the substrate 31 and the heating element 32 to enhance adhesion between the heating element 32 and the substrate 31. Specifically, the adhesive layer 34 can be made of a matching inorganic glass ceramic and is co-fired to connect the substrate 31 and the heating element 32. Specifically, the thickness of the adhesive layer 34 can be 0.05-0.1 mm. Of course, in other embodiments, the substrate 31 and the heating element 32 can also be directly connected using a seamless joint.

[0061] During the specific implementation process, bonding glass ceramics are coated on the periphery of the sintered heating element 32, and then the heating element 32 is placed in the receiving groove 311 of the sintered substrate 31. Thereafter, the substrate 31 and the heating element 32 are sintered together for a second time to embed the heating element 32 into the receiving groove 311 of the substrate 31.

[0062] See also Figures 1a to 5 In a specific embodiment, the heating component 30 further includes a first electrode 33a and a second electrode 33b; one of the first electrode 33a and the second electrode 33b is disposed on the first extension portion 321, and the other electrode is disposed on the second extension portion 322. In a specific use process, the first electrode 33a and the second electrode 33b are electrically connected to the power supply component via electrode leads, thereby electrically connecting the heating element 32 to the power supply component. For details, see Figure 3aThe first electrode 33a and the second electrode 33b are respectively disposed on the same side surface of the first extension portion 321 and the second extension portion 322 at one end away from the third extension portion 323. In one specific embodiment, when the substrate 31 is a metal substrate, the first electrode 33a and the second electrode 33b may also extend to the surface of the metal substrate 31, so that the metal substrate 31 can generate heat when connected to a power source, thereby improving heating efficiency.

[0063] In one embodiment, see Figure 2 、 Figure 5 and Figure 6 In the first extension portion 321 and the second extension portion 322, the first surface C2 and the second surface D2 opposite to the first surface C2 of one extension portion are both provided with a first electrode 33a, and the first surface C2 and the second surface D2 opposite to the first surface C2 of the other extension portion are both provided with a second electrode 33b, that is, the number of the first electrode 33a and the number of the second electrode 33b are both two. When connecting the first electrode 33a and the second electrode 33b to two electrode leads, one of the Y-shaped electrode leads can be connected to the first electrode 33a on the two surfaces of the first extension portion 321, and the other Y-shaped electrode lead can be connected to the second electrode 33b on the second extension portion 322; by arranging the first electrode 33a and the second electrode 33b on the two surfaces, this not only facilitates welding, but also can increase the contact area with the conductive ceramic heating element 32 as much as possible to reduce the contact resistance, thereby generating less heat when the heating element 32 is energized, lowering the temperature, and when the two surfaces of the conductive ceramic heating element 32 are energized at the same time, the two surfaces form the same electric potential, which is conducive to making the conductive component electric field between the two surfaces uniform and the heating effect better; therefore, a mounting seat 40 can be set at the position of the first electrode 33a and the second electrode 33b (because the resistance of the heating element 32 at the first electrode 33a and the second electrode 33b is small and the heat generated is low), which can prevent the mounting seat 40 from being damaged by high temperature.

[0064] Specifically, the first electrode 33a and the second electrode 33b can be formed at the two ends of the first extension portion 321 and the second extension portion 322 by coating to improve the bonding force between the electrodes and the heating element 32, thereby improving the connection stability between the electrode lead connected to the electrode and the heating element 32; it can be understood that the ceramic has a microporous structure, and the microporous structure of the ceramic can make the bonding force between the formed first electrode 33a and the second electrode 33b and the heating element 32 strong even when the coating thickness is large, thereby greatly improving the bonding force between the first electrode 33a and the second electrode 33b and the heating element 32. Specifically, silver paste can be used as the coating material. It can be understood that the first electrode 33a and the second electrode 33b can also be formed by depositing a metal film, such as depositing gold, platinum, copper, etc. with a thickness higher than 1*10- 6Ohmic metal material; the coating length can specifically be 6.5 mm.

[0065] In specific embodiments, see Figure 7 , Figure 7 This is a side view of a heating element provided in one embodiment of the present application. The surface of the heating element 32 may also be coated with a protective layer 35, which covers the first electrode 33a and the second electrode 33b to prevent tobacco oil formed when heating tobacco from damaging the first electrode 33a, the second electrode 33b, and the heating element 32. Specifically, the protective layer 35 may be a glass glaze layer. Furthermore, the protective layer 35 may also cover the entire substrate 31, thereby providing the entire heating component 30 with a smooth surface. Of course, in other embodiments, the protective layer 35 may also be coated on the entire surface of the substrate 31 and the portion of the surface of the heating element 32 near the substrate 31, thereby exposing the portion of the surface of the heating element 32 away from the substrate 31. This improves the smoothness of the substrate 31 and the heating element 32 surfaces while allowing the heating element 32 to directly contact the aerosol-forming matrix, thereby improving heat utilization efficiency. The portion of the surface of the heating element 32 near the substrate 31 specifically refers to the portion of the surface of the heating element 32 near the substrate 31, and the portion of the surface of the heating element 32 away from the substrate 31 specifically refers to the middle portion of the heating element 32.

[0066] For details, see Figure 1a The heating element 32 includes a first heating zone A and a second heating zone B connected to the first heating zone A, wherein the first heating zone A is the main atomization area for inserting the aerosol-forming matrix for heating, so that the substrate 31 and the heating element 32 are at least partially inserted into the aerosol-forming matrix, and the atomization temperature thereon is concentrated in the range of 280°C to 350°C, accounting for more than 75% of the area of the atomization region, and the second heating zone B is the main matching section of the heating element 32, and the temperature is below 150°C; in a specific embodiment, the first electrode 33a and the second electrode 33b are specifically arranged in the second heating zone B of the heating element 32 to reduce the atomization temperature of the ceramic heating element 32, so that the ratio of the heating temperature of the first heating zone A to the heating temperature of the second heating zone B of the heating element 32 is greater than 2.

[0067] In one specific embodiment, the resistivity of the material of the portion of the heating element 32 located in the second heating zone B is lower than the resistivity of the material of the portion of the heating element 32 located in the first heating zone A, so that the temperature of the first heating zone A of the heating element 32 is higher than the temperature of the second heating zone B. At the same time, by providing materials with different resistivities in different heating zones, the temperature of the different heating zones can be controlled by the resistivity difference. Specifically, the ceramic material of the portion of the heating element 32 located in the first heating zone A and the portion of the heating element 32 located in the second heating zone B are substantially identical in composition and are integrally formed, but the ceramic material of the portion of the heating element 32 located in the first heating zone A and the portion of the heating element 32 located in the second heating zone B are different in proportion or other components, thereby causing the resistivity of the portion of the heating element 32 located in the first heating zone A to be different from that of the portion of the heating element 32 located in the second heating zone B. Compared to the prior art, in which the first heating zone A and the second heating zone B use different conductive materials, such as aluminum film and gold film, the solution of splicing the two different conductive materials can effectively avoid the problem of conductor breakage in the first heating zone A and the second heating zone B of the heating element 32.

[0068] The heating component 30 provided in this embodiment is provided with a substrate 31 and a heating element 32, so that after the aerosol-forming matrix is inserted, the tobacco in the aerosol-forming matrix is heated by the heating element 32; at the same time, the heating element 32 is provided to include a first extension portion 321 and a second extension portion 322 connected to the first extension portion 321, and the first extension portion 321 and the second extension portion 322 of the substrate 31 and the heating element 32 are used to at least partially insert into the aerosol-forming matrix and generate heat when powered on to heat the aerosol-forming matrix; compared with the existing screen printing on ceramic The heating element on the substrate, the substrate 31 and the heating element 32 of the present application can be directly and independently inserted into the aerosol-forming matrix, and there will be no problem of the heating element 32 falling off from the ceramic substrate and causing failure when subjected to high-temperature heating, which greatly improves the stability of the heating component 30; in addition, by setting the substrate 31, the heating element 32 is embedded in the substrate 31 to improve the strength of the heating component 30, so that the heating component 30 can be subjected to force through the substrate 31 during the process of inserting the aerosol-forming matrix, effectively avoiding the problem of the heating element 32 bending due to force.

[0069] In one embodiment, see Figure 2 and Figure 3a, wherein, a first flange 312 which is thinner than the thickness of the heating element 32 in the thickness direction of the heating element 32 is provided on the inner side wall of the through groove close to the second surface D1 of the substrate 31, and the heating element 32 is specifically overlapped on a surface of the first flange 312 away from the second surface D1 of the substrate 31 to prevent it from falling off from the through groove of the substrate 31; specifically, one surface of the first flange 312 is flush with the second surface D1 of the substrate 31, and can be integrally formed with the substrate 31. In this embodiment, the substrate 31 can be specifically cut by laser according to a preset size to form the above-mentioned stepped substrate 31 with the first flange 312, which can effectively ensure the dimensional accuracy of the product and greatly improve the supporting strength of the first flange 312.

[0070] In one embodiment, see Figure 2 The first flange 312 extends continuously along the circumferential direction of the through groove to the inner wall surface of the entire through groove. It should be noted that the first flange 312 is thinner than the heating element 32 in the thickness direction of the heating element 32. It can be specifically understood that the first flange 312 is arranged around the circumferential direction of the through groove so that the first flange 312 has the same shape as the through groove. When the through groove is a U-shaped groove, the first flange 312 specifically presents a continuous U-shaped structure.

[0071] In one embodiment, see Figure 1a and Figure 2 , the length of the substrate 31 is slightly larger than the length of the heating element 32, and the first heating zone A and the second heating zone B of the heating element 32 can be fully accommodated in the accommodating groove 311, and the inner wall surface of the through groove and the positions corresponding to the first heating zone A and the second heating zone B of the heating element 32 are both provided with first flanges 312, and the first heating zone A and the second heating zone B of the heating element 32 are both overlapped on the first flange 312. Correspondingly, during the process of the heating element 32 being powered on and heating, the temperature of the portion of the substrate 31 surrounding the first heating zone A will be higher than the temperature of the portion of the substrate 31 surrounding the first heating zone A. Figure 2 In the structure shown, the first heating area A and the portion of the substrate 31 surrounding the first heating area A are inserted into the aerosol forming matrix, and the second heating area B and the portion of the substrate 31 surrounding the second heating area B are outside the aerosol forming matrix.

[0072] Specifically, the products corresponding to the above embodiments (see Figure 2 ) For specific dimensions, please refer to Figure 8 and Figure 9 ,in, Figure 8 This is a schematic diagram of the dimensions of a heating component provided in one embodiment of the present application. Figure 9 for Figure 8C-direction view of the structure shown; specifically, the total length L21 of the substrate 31 can be 15-20 mm, such as 18.00 mm, the total width W21 can be 3-6 mm, such as 5.00 mm, and the total thickness H21 can be 0.3-0.6 mm, such as 0.5 mm; wherein the width W22 of the first surface C1 of the substrate 31 can be 0.5-1 mm, such as 0.75 mm, and the width W23 of the second surface D1 of the substrate 31 can be 1-2 mm, such as 1.25 mm. In this embodiment, the width of the first flange 312 can be 0.2-0.3 mm, such as 0.25 mm; specifically, it is installed in the accommodating groove 311 The length L22 of the heating element 32 can be 10-17 mm, such as 16.1 mm, and the width W24 can be 2-5 mm, such as 3.4 mm. The length L23 of the first extension portion 321 and the second extension portion 322 can be 12-16 mm, such as 14.55 mm. The spacing L24 between the first extension portion 321 and the second extension portion 322 is less than one tenth of the width of the entire heating element 32. The spacing L24 between the first extension portion 321 and the second extension portion 322 can range from 0.25 to 0.35 mm. For example, the spacing L24 between the two can be specifically 0.3 mm, so as to effectively ensure the strength of the heating element 32 while avoiding short circuit problems. Specifically, after the heating element 32 is accommodated in the accommodating groove 311, a gap is left between it and the inner wall surface of the accommodating groove 311 to facilitate filling of the adhesive layer 34. The width of the gap can be specifically 0.05 to 0.1 mm.

[0073] In another specific embodiment, see Figure 10a , Figure 10a A schematic diagram of the structure of a heating component provided in another embodiment of the present application; the first heating area A and the second heating area B can also be that only the first heating area A of the heating element 32 is accommodated in the accommodating groove 311, and the second heating area B is suspended. In this case, see Figure 10b , Figure 10b Schematic diagram of another embodiment of the present application showing the insertion of a heating component into an aerosol atomizing matrix; the substrate 31 may be fully inserted into the aerosol-forming matrix 302, and the heating element 32 may still be partially inserted into the aerosol-forming matrix 302; specifically, only most or all of the first heating area A of the heating element 32 is inserted into the aerosol-forming matrix 302, and the portion corresponding to the second heating area B remains outside the aerosol-forming matrix 302, that is, not inserted into the aerosol-forming matrix 302; or the first heating area A and a small portion of the second heating area B of the heating element 32 are both inserted into the aerosol-forming matrix 302, and the portion corresponding to most of the second heating area B remains outside the aerosol-forming matrix 302; in this embodiment, see Figure 5 and Figure 11 , Figure 11This is a schematic diagram of the structure of a heating element provided in another embodiment of the present application; the portions of the first extension 321 and the second extension 322 located in the second heating zone B have first and second protrusions 3211 and 3221 disposed in opposite directions, so that the width of the portion of the heating element 32 located in the second heating zone B is greater than the width of the portion located in the first heating zone A. This ensures the strength of the second heating zone B of the heating element 32 and makes the resistance of the second heating zone B of the heating element 32 lower than that of the first heating zone A, thereby lowering the temperature corresponding to the second heating zone B of the heating element 32. Specifically, in this embodiment, the length L21 of the substrate 31 is less than the length L22 of the heating element 32.

[0074] Specifically, the first protrusion 3211 and the second protrusion 3221 are respectively in contact with the ends of the substrate 31; and in a specific embodiment, the width W25 of the first protrusion 3211 and the second protrusion 3221 can be the same as the width W26 of the opposite side walls of the accommodating groove 311, and the opposite side walls of the accommodating groove 311 refer to two parallel extensions of the substrate 31; and in one embodiment, see Figure 5 The first extension portion 321 and the second extension portion 322 are provided with a second flange 313 flush with the first flange 312 at the ends away from the third extension portion 323, and the first protrusion portion 3211 and the second protrusion portion 3221 are provided with a first yield portion 324 corresponding to the second flange 313 at the positions corresponding to the second flange 313. The first yield portion 324 is overlapped on the second flange 313 to support the second heating zone B of the heating element 32 through the second flange 313.

[0075] In another embodiment, see Figure 3a The heating element 32 is entirely accommodated in the accommodating groove 311, and the first flange 312 is only arranged on the inner wall surface of the accommodating groove 311 near the first end M; specifically, the first flange 312 includes two, and the two first flanges 312 are relatively arranged on the two inner wall surfaces of the accommodating groove 311 and are located on the position of the substrate 31 near the first end M.

[0076] Specifically, when the heating element 32 is entirely accommodated in the accommodating groove 311, the inner wall surface of the accommodating groove 311 is provided with two first flanges 312 only at the position corresponding to the second heating area B of the heating element 32, and the second heating area B of the heating element 32 is partially overlapped on the two first flanges 312; at this time, see Figure 3b , Figure 3bSchematic diagram of a heating element provided in an embodiment of the present application being inserted into an aerosol atomizing matrix; the substrate 31 is partially inserted into the aerosol-forming matrix 302, and the heating element 32 is still partially inserted into the aerosol-forming matrix 302; specifically, only the portion corresponding to the first heating zone A of the heating element 32 is inserted into the aerosol-forming matrix 302, and the first heating zone A of the heating element 32 does not need to be supported by the substrate 31, and the portion corresponding to the second heating zone B of the heating element 32 and the portion of the substrate 31 at the corresponding position remain outside the aerosol-forming matrix 302, that is, not inserted into the aerosol-forming matrix 302; in a specific embodiment, see Figure 6 The thickness of the heating element 32 is the same as that of the substrate 31 . The portion of the heating element 32 located in the second heating zone B is provided with two second paving portions 325 corresponding to the two first flanges 312 . The two second paving portions 325 are overlapped on the two first flanges 312 .

[0077] Of course, in other embodiments, when only the first heating zone A of the first heating zone A and the second heating zone B of the heating element 32 is accommodated in the accommodating groove 311, the inner wall surface of the accommodating groove 311 is only provided with two first flanges 312 at the position corresponding to the part of the first heating zone A of the heating element 32, and the heating element 32 is overlapped on the two first flanges 312 at the part of the position located in the first heating zone A.

[0078] In a specific embodiment, Figure 3a The structural dimensions of the corresponding heating element 32 can be found in Figure 12 , Figure 12Schematic diagram of the dimensions of the heating component provided for another embodiment of the present application; in this embodiment, the total length L21 of the substrate 31 can still be 15-20 mm, such as 18.00 mm, the total width W21 can be 3-6 mm, such as 5.00 mm, and the total thickness H21 can be 0.3-0.6 mm, such as 0.5 mm; wherein the width W22 of the first surface C1 of the substrate 31 can be 0.5-1 mm, such as 0.75 mm, and the width W23 of the second surface D1 of the substrate 31 can be 1-2 mm, such as 1.25 mm. In this embodiment, the thickness H22 of the first flange 312 can be 0.2-0.3 mm, such as 0.25 mm, and the length L25 of the first flange 312 can be 5-6 mm, such as 6.00 mm; the length L22 of the heating element 32 installed in the accommodating groove 311 can be 10-17 mm, such as The width W24 of the portion overlapping the first flange 312 can be 2-5 mm, for example, 3.4 mm. The width W27 of the portion clamped between the first flange 312 can be 2-3 mm, for example, 2.4 mm. The length L23 of the first extension 321 and the second extension 322 can be 13-16 mm, for example, 14.55 mm. The spacing L4 between the first extension 321 and the second extension 322 is less than one-tenth of the width of the entire heating element 32. The spacing L24 between the first extension 321 and the second extension 322 can range from 0.25 to 0.35 mm, for example, 0.3 mm. Specifically, the length of the first relief portion 324 on the heating element 32 is the same as the length of the first flange 312, and the height of the first relief portion 324 is the same as the thickness H22 of the first flange 312. Specifically, the error range of each of the above dimensions does not exceed 0.05 mm.

[0079] In specific embodiments, see Figures 13 to 16 ,in, Figure 13 A schematic diagram of the structure of the mounting base and the heating component after assembly according to an embodiment of the present application; Figure 14 for Figure 13 The corresponding product disassembly diagram; Figure 15 A schematic diagram of the structure of a mounting base and a heating component after assembly according to another embodiment of the present application; Figure 16 for Figure 15Schematic diagram of the disassembly of the corresponding product; a mounting seat 40 is also provided on the heating component 30. In a specific embodiment, the heating component 30 is set on the mounting seat 40 when in use to form a heating mechanism, and the mounting seat 40 and the heating component 30 are fixedly arranged so that the heating component 30 can be installed in the main body of the aerosol forming device through the mounting seat 40; specifically, the mounting seat 40 is fixed at a position corresponding to the second heating area B on the heating component 30; and after the aerosol forming matrix 302 is inserted, the bottom end of the aerosol forming matrix 302 abuts against the upper surface of the mounting seat 40.

[0080] Specifically, the material of the mounting seat 40 can be an organic or inorganic material with a melting point above 160 degrees, for example, it can be PEEK material; the mounting seat 40 can be bonded to the heating component 30 by an adhesive, and the adhesive can be a high-temperature resistant glue.

[0081] In one embodiment, see Figure 13 and Figure 14 The mounting base 40 includes a mounting body 41 having a mounting hole 42 formed therein. The heating component 30 is inserted into the mounting hole 42 for mounting with the mounting base 40. In a specific embodiment, when the heating element 32 of the heating component 30 is fixed to the mounting base 40, the portion corresponding to the second heating zone B of the heating element 32 is inserted into the mounting hole 42. Specifically, the sidewalls of the mounting hole 42 are provided with a relief groove, through which the electrode lead extends into the mounting base 40 to connect with the electrode on the heating element 32. Furthermore, the mounting body 41 is also provided with at least two clamping portions 43, through which the mounting base 40 is fixed to the housing of the aerosol-forming device.

[0082] Further, see Figure 16 An extension groove 44 communicating with the mounting hole 42 may be further provided on one side of the mounting body 41. The extension groove 44 may be provided on a side surface of the third extension portion 323 facing away from the heating element 32. The extension groove 44 may be consistent in shape with the portion of the heating component 30 that is inserted into the mounting base 40. For example, if the portion of the heating component 30 that is inserted into the mounting base 40 is rectangular, the extension groove 44 may also be rectangular. This extension groove 44 reinforces the portion of the heating component 30 that is inserted into the mounting base 40 to prevent breakage. In one embodiment, two extension grooves 44 are provided on the mounting base 40, and the two extension grooves 44 are arranged perpendicularly to each other.

[0083] In one embodiment, see Figure 17 , Figure 17This is a front view of the mounting base and heating component after assembly according to one embodiment of the present application. The portion of the surface of the heating component 30 for insertion into the mounting base 40 has a first securing structure 326. A second securing structure 327 is provided within the mounting hole 42 of the mounting base 40 at a position corresponding to the first securing structure 326. The mounting base 40 and the heating component are secured together by the engagement of the first securing structure 326 and the second securing structure 327, thereby improving the stability of the connection. Specifically, the first securing structure 326 can be a plurality of protrusions (or depressions), and the second securing structure 327 can be a depression (or protrusion) that matches the first securing structure 326. Specifically, when the heating element 32 of the heating component 30 is fixed to the mounting base 40, the first fixing structure 326 can be provided on the surface of the first extension portion 321 and the second extension portion 322 of the heating element 32 for inserting into the mounting base 40; when the substrate 31 of the heating component 30 is fixed to the mounting base 40, the first fixing structure 326 can be provided on the surface of the substrate 31 for inserting into the mounting base 40 (see FIG. Figure 17 ).

[0084] The heating component 30 provided in this embodiment can directly adopt a self-supporting ceramic heating plate (or heating rod) as the heating form, and the heating element 32 can be arranged into a single series type according to the electrode control position and resistance value requirements; at the same time, the heating element 32 is made of ceramic material. Compared with the existing metal heating element or the heating element structure formed by coating metal heating material on a ceramic substrate, it can contact tobacco on both sides at the same time and heat the tobacco, and the heating is more uniform and stable.

[0085] See also Figure 18 , Figure 18 This is a structural schematic diagram of an aerosol-forming device provided in one embodiment of the present application. In this embodiment, an aerosol-forming device 300 is provided, which includes a shell 301 and a heating component 30, a mounting seat 40 and a power supply component 50 arranged in the shell 301.

[0086] Among them, the heating component 30 is arranged on the mounting base 40 and is fixedly mounted on the inner wall surface of the shell 301 through the mounting base 40; specifically, the specific structure and function of the heating component 30 and the mounting base 40 can be referred to the text description in the relevant embodiment of the heating component 30 provided in the above embodiment, and will not be repeated here; the power supply component 50 is connected to the heating component 30 for supplying power to the heating component 30; and in one embodiment, the power supply component 50 can be specifically a rechargeable lithium-ion battery.

[0087] The aerosol-forming device 300 provided in this embodiment is provided with a heating component 30 to heat and atomize the aerosol-forming substrate 302 after the aerosol-forming substrate 302 is inserted; wherein, the heating component 30 is provided to include a substrate 31 and a heating element 32, so that after the aerosol-forming substrate 302 is inserted, the tobacco in the aerosol-forming substrate 302 is heated by the heating element 32; at the same time, the heating element 32 is provided to include a first extension portion 321 and a second extension portion 322 connected to the first extension portion 321, and the first extension portion 321 and the second extension portion 322 of the substrate 31 and the heating element 32 are used to at least partially insert the aerosol-forming substrate 302. 2 and generates heat when powered on to heat the aerosol-forming matrix 302; compared to the existing heating elements that are screen-printed on ceramic substrates, the substrate 31 and heating element 32 of the present application can be directly and independently inserted into the aerosol-forming matrix 302, and there will be no problem of the heating element 32 falling off from the ceramic substrate during high-temperature heating, resulting in failure, thereby greatly improving the stability of the heating component 30; in addition, by providing the substrate 31, the heating element 32 is embedded in the substrate 31, so as to improve the strength of the heating component 30. When the heating component 30 is inserted into the aerosol-forming matrix 302, the substrate 31 can be used to bear force, thereby effectively avoiding the problem of the heating element 32 being bent due to the force.

[0088] The above is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A heating component, characterized in that: include: substrate; a heating element embedded in the substrate and comprising a first extension portion and a second extension portion connected to one end of the first extension portion; the substrate and the heating element are configured to at least partially insert into the aerosol-forming substrate and generate heat to heat the aerosol-forming substrate when the first extension portion and the second extension portion are energized; the heating element is a heating plate; The substrate is provided with a receiving groove, the heating element includes a first heating area and a second heating area connected to the first heating area, only the first heating area is received in the receiving groove, and the second heating area is suspended outside the receiving groove; The substrate has a first surface and a second surface opposite to the first surface. The accommodating groove is a through groove penetrating the first surface and the second surface, so that the heating element is exposed from one side of the first surface and one side of the second surface respectively.

2. The heating component according to claim 1, characterized in that The first extension portion and the second extension portion are arranged in parallel and spaced apart. The heating element further includes a third extension portion for completely inserting into and heating the aerosol-forming substrate. The adjacent ends of the first extension portion and the second extension portion are connected through the third extension portion.

3. The heating component according to claim 2, characterized in that The through slot has an open end and a closed end opposite to the open end; the third extension portion is arranged at the position where the open end is located and extends from the open end to form a pointed end.

4. The heating component according to claim 2, characterized in that The through slot has an open end and a closed end opposite to the open end. The third extension portion is arranged at a position close to the closed end, and the base plate has a tip at a position close to the closed end.

5. The heating component according to claim 4, characterized in that: A first flange is provided on the inner wall surface of the through groove close to the second surface, and the heating element is overlapped on the first flange.

6. The heating component according to claim 5, characterized in that: The first flange extends along the circumferential direction of the through groove, and only the first heating zone of the first heating zone and the second heating zone is accommodated in the accommodation groove and overlapped on the first flange.

7. The heating component according to claim 6, characterized in that Portions of the first extension portion and the second extension portion located in the second heating zone have a first protrusion and a second protrusion disposed opposite to each other, and the first protrusion and the second protrusion are respectively in contact with ends of the substrate.

8. The heating component according to claim 7, characterized in that: The end of the substrate abutting against the first and second protrusions is provided with a second flange, and the positions of the first and second protrusions corresponding to the second flange are provided with first relief portions, which overlap the second flange.

9. The heating component according to claim 2, characterized in that: The heating component further includes a first electrode and a second electrode, wherein one of the first electrode and the second electrode is disposed at an end of the first extension portion away from the third extension portion, and the other electrode is disposed at an end of the second extension portion away from the third extension portion.

10. The heating component according to claim 9, characterized in that: The electrodes are both provided on a first surface of the first extension portion and a second surface opposite to the first surface, and the electrodes are both provided on a first surface of the second extension portion and a second surface opposite to the first surface.

11. The heating component according to claim 9, characterized in that: The heating component also includes a protective layer, which is coated on the surface of the heating element and covers the first electrode and the second electrode; or coated on the entire surface of the substrate and the part of the surface of the heating element close to the substrate, so that the part of the surface of the heating element away from the substrate is exposed.

12. The heating component according to claim 1, characterized in that The distance between the first extension portion and the second extension portion of the heating element is 0.25-0.35 mm.

13. The heating component according to claim 1, characterized in that The heating element includes a main component and a crystal component; the main component is one or more of manganese, strontium, lanthanum, tin, antimony, zinc, bismuth, silicon, and titanium, and the crystal component is one or more of lanthanum manganate, strontium lanthanum manganate, tin oxide, zinc oxide, antimony oxide, bismuth oxide, silicon oxide, and yttrium oxide.

14. The heating component according to claim 1, characterized in that The substrate is made of insulating ceramic, and an adhesive layer is provided between the substrate and the heating element for bonding the substrate and the heating element.

15. The heating component according to claim 1, characterized in that The heating element and the substrate are flat-plate shaped, and the upper and lower surfaces of the heating element are flush with, protruding from, or recessed from the first surface and the second surface of the substrate.

16. An aerosol-forming device, characterized in that It comprises: a shell and a heating component and a power supply component arranged in the shell; wherein the power supply component is connected to the heating component for supplying power to the heating component, and the heating component is the heating component according to any one of claims 1-15.

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