Heater assembly and aerosol forming device

Abstract

The present application provides a heater assembly and an aerosol-forming device. The heater assembly includes a mounting base and a heating assembly; wherein the heating assembly includes a heating element, the heating element having a first connection end and a second connection end opposite to the first connection end; wherein the heating element is fixed to the mounting base, and the heating element is at least partially used to insert and heat the aerosol-forming matrix. The heating element in the heater assembly can be directly and independently inserted into the aerosol-forming matrix, and will not fall off from the substrate when heated at high temperatures, causing failure, thereby greatly improving the reliability of the heating assembly; at the same time, it can effectively avoid the problem of the mounting base affecting the resistive heating circuit, and no separate mounting substrate is required, effectively reducing production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of heat-not-burn (HBNO) smoking devices, and in particular to a heater assembly 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 the heating tube into the substrate to heat the substrate. Heating components are widely used due to their simplicity of manufacture and ease of use. Current heating components primarily utilize ceramic or insulated metal as a substrate, upon which a resistive heating circuit is printed or plated. This circuit is then affixed to the substrate after high-temperature treatment. Furthermore, the heating component and mounting base form a heater assembly, which is then secured to the heat-not-burn aerosol-forming device via the mounting base.

[0004] However, since the resistance heating circuit on the existing heating component is a thin film that is printed or plated on the substrate later, during the use of the heating component repeatedly inserted into the aerosol-forming matrix, the resistance heating circuit is easy to fall off from the substrate when subjected to high-temperature heating due to the bending deformation of the substrate, and has poor stability. In addition, during the heating process, the resistance heating circuit only contacts the aerosol-forming matrix on the side of the substrate where the resistance 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. In addition, since the resistance heating circuit is a thin film, the mounting base may also affect the resistance heating circuit when assembling the heating component, such as causing the resistance heating circuit to deform or break. Summary of the Invention

[0005] The present application provides a heater assembly and an aerosol forming device. The heater assembly can solve the problem that the resistive heating circuit in the existing heater assembly is easily detached from the base when subjected to high-temperature heating, has poor stability, and the resistive heating circuit has poor heating uniformity on the aerosol forming matrix during the heating process; at the same time, it can solve the problem that the mounting base may affect the resistive heating circuit when the mounting base and the heating assembly are assembled.

[0006] In order to solve the above technical problems, a technical solution adopted in this application is: providing a heater assembly, which includes a mounting base and a heating assembly; wherein the heating assembly includes a heating element, the heating element having a first connection end and a second connection end opposite to the first connection end; wherein the heating element is fixed to the mounting base, and the heating element is at least partially used to insert and heat the aerosol-forming matrix.

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

[0008] The heater assembly and aerosol forming device provided by the present application are characterized in that the heater assembly is provided with a heating component, and the heating component is provided with a structure including a heating element, and at least a part of the heating element can be inserted into and heat the aerosol forming matrix. Compared with the existing resistive heating circuit silk-screened on the substrate, the heating element of the present application can be directly and independently inserted into the aerosol forming matrix, and will not fall off from the substrate and cause failure when subjected to high-temperature heating, thereby greatly improving the reliability of the heating component; at the same time, by providing a mounting base, the heating element and the mounting base are fixed, so that the heating assembly is fixed in the aerosol forming device through the mounting base; wherein, since the heating element itself can be independently inserted into the aerosol forming matrix, that is, the heating element is essentially a self-supporting structure, fixing the mounting base to the heating element can effectively avoid the problem of the mounting base affecting the resistive heating circuit; and there is no need to provide a separate mounting substrate, which effectively reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0010] Figure 2 A schematic diagram of a heating element provided in an embodiment of the present application being inserted into an aerosol-forming substrate;

[0011] Figure 3 A schematic structural diagram of a mounting base provided in one embodiment of the present application;

[0012] Figure 4 This is a front view of the mounting base and the heating element after assembly according to an embodiment of the present application;

[0013] Figure 5 A schematic structural diagram of a heating component provided in the first embodiment of the present application;

[0014] Figure 6 A schematic structural diagram of a heating component provided in the second embodiment of the present application;

[0015] Figure 7 A schematic diagram of a heating element provided in an embodiment of the present application being inserted into an aerosol-forming substrate;

[0016] Figure 8 for Figure 6 A disassembled schematic diagram of the structure shown;

[0017] Figure 9 A schematic structural diagram of a heating component provided in the third embodiment of the present application;

[0018] Figure 10 A schematic diagram of inserting a heating component into an aerosol-forming substrate according to another embodiment of the present application;

[0019] Figure 11 for Figure 9 a disassembled schematic diagram of the structure shown;

[0020] Figure 12 A schematic plan view of a heating component provided in a specific embodiment of the present application;

[0021] Figure 13 A schematic plan view of a heating component provided in another specific embodiment of the present application;

[0022] Figure 14 A schematic plan view of a heating component provided in another specific embodiment of the present application;

[0023] Figure 15 A schematic diagram of the dimensions of a heating plate provided in one embodiment of the present application;

[0024] Figure 16 A schematic diagram of the dimensions of a heating rod provided in one embodiment of the present application;

[0025] Figure 17 A schematic diagram of a structure in which electrodes provided in one embodiment of the present application are arranged on two opposite surfaces of a heating element;

[0026] Figure 18 A schematic structural diagram of a heating rod provided in one embodiment of the present application;

[0027] Figure 19 This is an E-direction view of a heating component provided in one embodiment of the present application;

[0028] Figure 20 A side view of a heating component provided in one embodiment of the present application;

[0029] Figure 21 A schematic diagram of a heating element provided in an embodiment of the present application being snapped into a mounting base;

[0030] Figure 22A schematic diagram of the positions of the first heating area and the second heating area on the heating rod provided in one embodiment of the present application;

[0031] Figure 23 A schematic structural diagram of a fixed jacket provided in one embodiment of the present application;

[0032] Figure 24 A schematic structural diagram of a fixed outer sleeve provided in another embodiment of the present application;

[0033] Figure 25 A schematic diagram of the structure of a heating component including a fixed outer shell provided in an embodiment of the present application;

[0034] Figure 26 for Figure 25 A schematic diagram of the structure shown before assembly;

[0035] Figure 27 A schematic structural diagram of a heating component including a fixed outer shell provided in another embodiment of the present application;

[0036] Figure 28 for Figure 27 A schematic diagram of the structure shown before assembly;

[0037] Figure 29 A schematic structural diagram of a fixed outer sleeve provided in an embodiment of the present application, which is provided on the outer surface of the first heating zone of the heating element;

[0038] Figure 30 This is a schematic diagram of the structure after the mounting base and the heating plate are assembled according to an embodiment of the present application;

[0039] Figure 31 This is a schematic diagram of the structure after the mounting base and the heating rod are assembled according to an embodiment of the present application;

[0040] Figure 32 This is a schematic structural diagram of the mounting base and the heating rod after assembly according to another embodiment of the present application;

[0041] Figure 33 A schematic structural diagram of a heating component provided in a fourth embodiment of the present application;

[0042] Figure 34 Provided for an embodiment of this application Figure 33 Schematic diagram of the corresponding product disassembly;

[0043] Figure 35 A schematic diagram of inserting a heating component into an aerosol atomizing matrix according to an embodiment of the present application;

[0044] Figure 36 A side view of a heating element provided in one embodiment of the present application;

[0045] Figure 37 A schematic structural diagram of a heating component provided in a fifth embodiment of the present application;

[0046] Figure 38 for Figure 37 Schematic diagram of the disassembly of the corresponding heating component;

[0047] Figure 39 for Figure 37 Schematic diagram of the dimensions of the corresponding heating components;

[0048] Figure 40 A schematic diagram of the structure of the mounting base and the heating component after assembly according to an embodiment of the present application;

[0049] Figure 41 A schematic diagram of the structure of a mounting base and a heating component after assembly according to another embodiment of the present application;

[0050] Figure 42 for Figure 41 Schematic diagram of the corresponding product disassembly;

[0051] Figure 43 A schematic diagram of the structure of a mounting base and a heating component after assembly according to another embodiment of the present application;

[0052] Figure 44 A specific embodiment of the present application provides Figure 43 Schematic diagram of the disassembly of the heating components in the product shown;

[0053] Figure 45 Another specific embodiment of the present application provides Figure 43 Schematic diagram of the disassembly of the heating components in the product shown;

[0054] Figure 46 A cross-sectional view of heating elements provided in parallel according to an embodiment of the present application;

[0055] Figure 47 A cross-sectional view of heating elements provided in parallel according to another embodiment of the present application;

[0056] Figure 48 A schematic structural diagram of a heating component provided in a sixth embodiment of the present application;

[0057] Figure 49 A specific embodiment of the present application provides Figure 48 A disassembled schematic diagram of the structure shown;

[0058] Figure 50 A schematic diagram of the structure of a heating component in which the entire surface of a heating rod is coated with a protective layer according to an embodiment of the present application;

[0059] Figure 51A schematic structural diagram of an aerosol forming device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0060] 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.

[0061] 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.

[0062] 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.

[0063] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0064] See also Figure 1 and Figure 2 ,in, Figure 1 A schematic structural diagram of a heater assembly provided in one embodiment of the present application; Figure 2Schematic diagram of inserting a heating component into an aerosol-forming substrate according to an embodiment of the present application; In this embodiment, a heater assembly 10 is provided, which specifically includes a mounting base 20 and a heating component 30; wherein the heating component 30 can be specifically used to insert and heat an aerosol-forming substrate 102; Specifically, the aerosol-forming substrate 102 can be tobacco, and the following embodiments all take this as an example; and the schematic diagram of inserting the heating component 30 into the aerosol-forming substrate 102 can be seen in Figure 2 .

[0065] Specifically, the heating component 30 includes a heating element, which is used to at least partially insert into and heat the aerosol-forming matrix 102. Compared with the existing resistive heating circuit silk-screened on the substrate, the heating element of the present application can be directly and independently inserted into the aerosol-forming matrix 102, and will not fall off from the substrate and cause failure when subjected to high-temperature heating, thereby greatly improving the reliability of the heating component 30; specifically, the heating element is fixed to the mounting base 20, so that the heating component 30 is fixed in the shell of the aerosol-forming device through the mounting base 20; wherein, since the heating element itself can be independently inserted into the aerosol-forming matrix 102, that is, the heating element is essentially a self-supporting structure, compared with the existing resistive heating circuit as a thin film, fixing the mounting base 20 to the heating element provided by the present application can effectively avoid the problem of the mounting base 20 affecting the resistive heating circuit; and there is no need to provide a separate mounting substrate to install the mounting base 20, which effectively reduces the production cost.

[0066] Among them, see Figure 3 , Figure 3 This is a structural diagram of a mounting base provided in one embodiment of the present application; the mounting base 20 may specifically include a mounting body 21 and a mounting hole 22 provided on the mounting body 21; the heating component 30 is specifically inserted into the mounting hole 22 to be fixed to the mounting base 20.

[0067] Specifically, the mounting hole 22 may be a through hole that passes through the upper and lower surfaces of the mounting body 21, and the size and shape of the mounting hole 22 match the shape and size of the portion of the heating element in the heating component 30 that is inserted into the mounting hole 22; specifically, see Figure 3 Two avoidance grooves 221 can also be provided on the side wall of the mounting hole 22. The two avoidance grooves 221 extend along the axial direction of the mounting hole 22 and are relatively arranged on the inner side wall of the mounting hole 22 so that the electrode lead connected to the power supply can pass through and communicate with the heating component 30.

[0068] In one embodiment, see Figure 1An extension groove 23 communicating with the mounting hole 22 may be further provided on one side surface of the mounting body 21. The extension groove 23 may extend radially along the mounting hole 22 and conform to the shape of the portion of the heating component 30 inserted into the mounting base 20. For example, if the portion of the heating component 30 inserted into the mounting base 20 is rectangular, the extension groove 23 may also be rectangular. This reinforcement prevents breakage of the portion of the heating component 30 inserted into the mounting base 20 through the extension groove 23. In one embodiment, two extension grooves 23 are provided on the mounting base 20, and the two extension grooves 23 may be arranged perpendicularly to each other.

[0069] In one embodiment, see Figure 1 At least two clamping portions 241 are further provided on the mounting body 21 , and the mounting seat 20 can be fixed to the housing of the aerosol forming device through the clamping portions 241 .

[0070] In one embodiment, see Figure 4 , Figure 4 This is a front view of the mounting base and heating element 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 20 has a first securing structure 25. A second securing structure 26 is provided within the mounting hole 22 of the mounting base 20 at a position corresponding to the first securing structure 25. The mounting base 20 and the heating component 30 are secured together by the engagement of the first securing structure 25 and the second securing structure 26, thereby improving the stability of the connection between the two. Specifically, the first securing structure 25 can be a plurality of protrusions (or depressions), and the second securing structure 26 can be a depression (or protrusion) that matches the first securing structure 25.

[0071] Specifically, the material of the above-mentioned mounting seat 20 can be an organic or inorganic material with a melting point higher than 160 degrees, for example, it can be PEEK material; the mounting seat 20 can be specifically bonded to the heating component 30 by an adhesive, the adhesive can be a high-temperature resistant glue, or the heating component 30 can be placed in a molding mold, and the mounting seat 20 connected to the outside of the heating component 30 is formed through a molding process.

[0072] See also Figures 5 to 11 ,in, Figure 5 A schematic structural diagram of a heating component provided in the first embodiment of the present application; Figure 6 A schematic structural diagram of a heating component provided in the second embodiment of the present application; Figure 7 A schematic diagram of a heating element provided in an embodiment of the present application being inserted into an aerosol-forming substrate; Figure 8 for Figure 6 A disassembled schematic diagram of the structure shown; Figure 9 A schematic structural diagram of a heating component provided in the third embodiment of the present application; Figure 10A schematic diagram of inserting a heating component into an aerosol-forming substrate according to another embodiment of the present application; Figure 11 for Figure 9 Schematic diagram of the disassembly of the structure shown. In one embodiment, the heating component 30 specifically includes a heating element 11, and the heating element 11 specifically includes a first extension portion 111 and a second extension portion 112 connected to the first extension portion 111. In a specific embodiment, the first extension portion 111 and the second extension portion 112 are both used to at least partially insert into the aerosol-forming substrate 102 and generate heat when energized to heat the aerosol-forming substrate 102. It is understandable that the first extension portion 111 and the second extension portion 112 can be independently and directly inserted into the aerosol-forming substrate 102, while the existing resistive heating circuits that are silk-screened or plated on a substrate require the substrate to be inserted into the aerosol-forming substrate 102 and cannot be directly inserted into the aerosol-forming device. In addition, the first extension portion 111 and the second extension portion 112 provided in the present application will not fall off from the substrate when subjected to high-temperature heating, causing failure, thereby greatly improving the stability of the heating component 30.

[0073] Specifically, the two opposite surfaces of the first extension portion 111 and the second extension portion 112 used to insert the aerosol-forming matrix 102 are in contact with the aerosol-forming matrix 102; it can be understood that since the heating element 11 of the present application is directly inserted into the aerosol-forming matrix 102, it does not require the aid of a substrate or other base. Therefore, at least two opposite surfaces of the first extension portion 111 and the second extension portion 112 of the heating element 11 can be directly in contact with the aerosol-forming matrix 102, thereby greatly improving the heat utilization and heating efficiency.

[0074] In another embodiment, see Figure 6 and Figure 9, the heating component 30 also includes a third extension portion 113 for fully inserting and heating the aerosol-forming matrix 102; specifically, in this embodiment, the first extension portion 111 and the second extension portion 112 are arranged in parallel and spaced apart, and the ends of the first extension portion 111 and the second extension portion 112 that are close to each other are connected by the third extension portion 113; wherein, the end of the first extension portion 111 and the second extension portion 112 that are close to each other specifically refers to the end that first contacts and inserts the aerosol-forming matrix 102 (i.e., the second connection end of the heating element 11); it can be understood that the first extension portion 111, the second extension portion 112 and the third extension portion 113 form a roughly U-shaped structure; and in a specific embodiment, the first extension portion 111, the second extension portion 112 and the third extension portion 113 are integrally formed and sintered of conductive ceramic; specifically, the substrate plate forming the heating element 11 can be cut by laser cutting to form a cutting groove 114, thereby obtaining a heating element 11 having a first extension portion 111, a second extension portion 112 and a third extension portion 113. It is understandable that the heating element 11 can also be directly sintered.

[0075] Specifically, the shapes of the first extension portion 111, the second extension portion 112 and the third extension portion 113 are not limited and can be designed according to actual needs. Specifically, the first extension portion 111 and the second extension portion 112 are long strips, and the width of the third extension portion 113 gradually decreases from one end close to the first extension portion 111 to the end away from the first extension portion 111, thereby forming a pointed end to facilitate the insertion of the heating element 11 into the aerosol-forming matrix 102. In this embodiment, the first extension portion 111 and the second extension portion 112 are rectangular parallelepipeds, and the third extension portion 113 is roughly V-shaped. In other embodiments, the third extension portion 113 can also be U-shaped or an isosceles trapezoid, or other shapes in which the width gradually decreases from one end close to the first extension portion 111 and the second extension portion 112 to the direction away from the first extension portion 111 and the second extension portion 112. In this embodiment, the slot 114 is a rectangle of uniform width or has a convex guide arc formed at one end of the rectangle near the third extension portion 113. Specifically, the slot 114 is an axisymmetric structure, with its length parallel to its central axis. The first extension portion 111 and the second extension portion 112 are spaced apart and arranged in parallel with their lengths parallel to the central axis of the slot 114. The widths of the first extension portion 111, the second extension portion 112, and the third extension portion 113 are perpendicular to the central axis of the slot 114. The heating element 11 is a structure symmetrical about the central axis of the slot 114, that is, the first extension portion 111, the second extension portion 112, and the third extension portion 113 are all symmetrical about the central axis of the slot 114. This structure ensures that the temperatures at the corresponding positions on the width directions of the first extension portion 111, the second extension portion 112, and the third extension portion 113 on both sides of the slot 114 are consistent, resulting in a better smoke taste.

[0076] In other embodiments, see Figure 12 , Figure 12 This is a schematic plan view of a heating component provided in accordance with a specific embodiment of the present application; the first extension portion 111 and the second extension portion 112 are similarly arranged side by side, but the width of the slot 114 can be a centrally symmetrical structure, gradually decreasing from the end away from the third extension portion 113 to the end closer to the third extension portion 113. The corresponding outer edges of the first extension portion 111 and the second extension portion 112 are parallel, and the width gradually increases from the end away from the third extension portion 113 (i.e., the first connection end of the heating element 11) to the end of the third extension portion 113 (i.e., the second connection end of the heating element 11). This slightly increases the resistance of the end away from the third extension portion 113 to balance the resistance between the end and the third extension portion 113 (the third extension portion 113 has a larger resistance), resulting in more balanced overall heating.

[0077] In other embodiments, see Figure 13 , Figure 13 A planar schematic diagram of a heating component provided for another specific embodiment of the present application; the groove 114 can be a centrally symmetrical structure that gradually increases from the end away from the third extension portion 113 to the end of the third extension portion 113, and the corresponding outer sides of the first extension portion 111 and the second extension portion 112 are parallel, and the width of the first extension portion 111 and the second extension portion 112 gradually decreases from the end away from the third extension portion 113 to the end of the third extension portion 113, so that the resistance near the upper end of the heating element 11 is larger, so as to meet the design requirements of the heating method in which the high temperature of the heating element 11 is concentrated in the middle and upper sections.

[0078] In other embodiments, see Figure 14 , Figure 14 A planar schematic diagram of a heating component provided for another specific embodiment of the present application; the first extension portion 111 and the second extension portion 112 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 114 can be a centrally symmetrical structure that gradually decreases from the end away from the third extension portion 113 to the end of the third extension portion 113.

[0079] In one embodiment, see Figure 15 , Figure 15 This is a schematic diagram of the dimensions of the heating plate provided in one embodiment of the present application; the heating element 11 may be Figure 15 The plate-shaped portion shown may specifically be a heating plate made of conductive ceramic. In this embodiment, the spacing between the first extension portion 111 and the second extension portion 112 is less than one tenth of the width of the entire heating element 11. The spacing L1 between the first extension portion 111 and the second extension portion 112 may specifically be 0.25-0.35 mm, so as to effectively ensure the strength of the heating element 11 while avoiding short circuit problems.

[0080] Specifically, the resistivity of the ceramic used in the heating plate can be 5*10 -5 Ohm, the design power can be 2 watts, and the resistance can be 0.71 ohms; specifically, the heating plate can be a single series type (with a slot 114 in the middle), that is, the first extension 111, the third extension 113, and the second extension 112 are connected in series in sequence, the plate thickness H1 can be 0.5 mm, and the total length L2 can be 18 mm; the length L3 of the first extension 111 and the second extension 112 can be 16 mm. It can be understood that the single effective length of the heating element 11 can be 32.0 mm; the length of the third extension 113 of the heating element 11 can be 2 mm; specifically, the width W1 of the heating plate can be 4.0 mm; specifically, the error range of each dimension of the heating plate does not exceed 0.05 mm. Both opposite surfaces of the plate-shaped heating element 11 can be used to contact and heat the aerosol-forming substrate 102.

[0081] In another specific embodiment, see Figure 11 and Figure 16 , Figure 16 A schematic diagram of the dimensions of a heating rod provided for an embodiment of the present application; the heating element 11 may also be in the shape of a rod, and may specifically be a heating rod made of conductive ceramic. In this embodiment, the spacing L4 between the first extension portion 111 and the second extension portion 112 is less than one-third of the diameter φ of the entire heating rod, and the spacing L4 may specifically be 0.8-1 mm; specifically, in this embodiment, a supporting ceramic 14 is further provided between the first extension portion 111 and the second extension portion 112 to enhance the strength of the heating element 11, so that during the process of inserting the heating element 11 into the aerosol-forming matrix 102, the heating element 11 can be more smoothly inserted into the aerosol-forming matrix 102, effectively reducing the probability of bending problems caused by the heating element 11 due to stress. Specifically, the supporting ceramic 14 can be bonded to the first extension portion 111 and the second extension portion 112 through glass ceramic 15 to enhance the bonding strength between them. In this embodiment, the supporting ceramic 14 can be made of ceramic materials such as zirconia, zirconia toughening, and alumina materials.

[0082] Specifically, the resistivity of the ceramic material used in the heating rod can be 3*10 -5Ohm, the design power can be 3-4W, for example, specifically 3.3 watts, and the resistance can be 0.3-1 ohm, for example, 0.5 ohm; specifically, the heating rod can be a single series type, that is, the first extension portion 111, the third extension portion 113 and the second extension portion 112 are connected in series in sequence, and its diameter φ can be specifically 2-5 mm, specifically 3 mm, and the length L5 can be 18-22 mm, specifically 19.7 mm; wherein the length L6 of the first extension portion 111 and the second extension portion 112 can be 12-18 mm, specifically 16 mm. It can be understood that the effective length of a single heating element 11 can be 30-3 5 mm, specifically 32.0 mm; the length of the third extension portion 113 can be 2-5 mm, specifically 3.7 mm; specifically, the length L7 of the supporting ceramic 14 arranged between the first extension portion 111 and the second extension portion 112 can be 12-18 mm, specifically 17 mm, the width W2 can be the same as the diameter φ of the heating rod, specifically 2-5 mm, specifically 3 mm, the thickness H2 can be slightly smaller than the distance between the first extension portion 111 and the second extension portion 112, specifically, the thickness H2 can be 0.8-1.2 mm, for example, 0.9 mm, to facilitate the arrangement of the glass ceramic 15.

[0083] In specific embodiments, see Figures 6 to 11 The heating element 30 further includes two electrodes 12, one of which is disposed on the first extension portion 111 and the other is disposed on the second extension portion 112; in specific use, the two electrodes 12 are electrically connected to the power supply assembly via electrode leads, thereby electrically connecting the heating element 11 to the power supply assembly. Figure 6 and Figure 8 , the two electrodes 12 are respectively arranged on the same side of the first extension portion 111 and the second extension portion 112 away from the end of the third extension portion 113. The two electrodes 12 are formed by coating the outer surface of the lower end of the conductive ceramic with conductive silver paste. Specifically, the two electrodes 12 are roughly semi-cylindrical and extend to the inner wall surface corresponding to the groove 114 at both ends of the cross section of the heating element 11, so as to increase the contact area with the conductive ceramic as much as possible to reduce the contact resistance, and have a larger area for convenient welding of the electrode leads. Compared with the small-sized resistance heating circuit formed by silk-screen printing or plating in the prior art, the contact resistance between the electrode and the heating circuit is large. The heating element 11 of the present application can greatly increase the contact area with the electrode 12, thereby reducing the contact resistance and making the heating element 11 more stable in use.

[0084] In one embodiment, see Figure 17 and Figure 18 ,in, Figure 17 A schematic diagram of a structure in which electrodes provided in one embodiment of the present application are arranged on two opposite surfaces of a heating element; Figure 18Schematic diagram of the structure of a heating rod provided in an embodiment of the present application; when the heating element 11 is a heating plate, the electrodes 12 can be arranged on two opposite surfaces of the first extension portion 111 and the second extension portion 112, that is, one electrode 12 is arranged on the first surface C of the end portion of the first extension portion 111 and the second surface D arranged opposite to the first surface C, and another electrode 12 is arranged on the first surface C of the end portion of the second extension portion 112 and the second surface D arranged opposite to the first surface C. When connecting the two electrode leads, one Y-shaped electrode lead can be connected to the two electrodes 12 on the two surfaces of the first extension portion 111, and the other Y-shaped electrode lead can be connected to the electrode 12 on the second extension portion 112; when the heating element 11 is a heating rod, see Figure 18 , the two electrodes 12 can extend to the inner wall surface corresponding to the groove 114 respectively; specifically, the first extension part 111 of the heating rod has a first inner surface 111a and a first outer surface 111b, the second extension part 112 has a second inner surface 112a and a second outer surface 112b, the electrode 12 on the first extension part 111 extends from the first outer surface 111a to the first inner surface 111b, and the electrode 12 on the second extension part 112 extends from the second outer surface 112a to the second inner surface 112b. By arranging the electrodes 12 on the two surfaces of the heating element 11, it is not only convenient for welding, but also has low resistance and low heat generated when power is applied, which can effectively prevent damage. Moreover, when power is applied to the two surfaces of the conductive ceramic at the same time, the same electric potential is formed, which is conducive to making the electric field of the conductive component between the two surfaces uniform, and the heating effect is better.

[0085] In this embodiment, the slot 114 passes through the first surface C and the second surface D. Figure 19 , Figure 19 This is an E-direction view of the heating component provided by an embodiment of the present application; specifically, in the thickness direction of the heating element 11, the edges of the first extension portion 111, the second extension portion 112, and the third extension portion 113 form guide surfaces 118 from the surfaces parallel to the middle of the first surface C and the second surface D to the first surface C and the second surface D, respectively. The guide surfaces 118 can be specifically guide inclined surfaces (see Figure 19 ) or arc-shaped, which not only facilitates insertion into the aerosol-forming matrix 102, but also reduces resistance, thereby better protecting the heating element 11.

[0086] In a specific embodiment, the electrode 12 can be formed at the two ends of the first extension portion 111 and the second extension portion 112 by coating to improve the bonding force between the electrode 12 and the heating element 11, thereby improving the connection stability between the electrode lead connected to the electrode 12 and the heating element 11; it can be understood that ceramics have a microporous structure, and the microporous structure of the ceramics can make the bonding force between the formed electrode 12 and the heating element 11 strong even when the coating thickness is large, thereby greatly improving the bonding force between the electrode 12 and the heating element 11. Specifically, silver paste can be used as the coating material. It can be understood that the electrode 12 can also be formed by depositing a metal film, such as depositing gold, platinum, copper, etc. with a thickness higher than 1*10 -6 Ohm's metal material.

[0087] In specific embodiments, see Figure 20 , Figure 20 This is a side view of a heating component provided in one embodiment of the present application; the surface of the heating element 11 may also be coated with a protective layer 115, which covers the two electrodes 12 to prevent the tobacco oil formed when the aerosol-forming matrix 102 is heated from damaging or contaminating the electrodes 12 and the heating element 11; specifically, the protective layer 115 may be a glass glaze layer.

[0088] For details, see Figure 21 and Figure 22 , Figure 21 A schematic diagram of a heating element provided in an embodiment of the present application being snapped into a mounting base; Figure 22A schematic diagram of the positions of the first heating zone and the second heating zone on the heating rod provided in an embodiment of the present application; the heating element 11 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 102 for heating, 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 area, and the second heating zone B is the main matching section of the heating element 11, and the temperature is below 150°C, that is, the temperature of the first heating zone A is higher than the temperature of the second heating zone B, and the portion of the heating element 11 located in the second heating zone B is fixed to the mounting seat 20 to prevent the temperature of the second heating zone B from being too high and damaging the mounting seat 20 (for example, PEEK is a plastic and may melt) or when the temperature of the second heating zone B is too high, the mounting seat 20 (for example, a ceramic fixing seat) transfers the high temperature to other parts of the aerosol-forming device, so that The outer shell temperature is too hot or the internal circuit board is damaged, and the temperature conduction will reduce the heat utilization of the first heating zone A; in a specific embodiment, the portion of the heating element 11 located in the second heating zone B is inserted into the mounting hole 22 of the mounting base 20 to be fixed to the mounting base 20; specifically, all positions corresponding to the portion of the heating element 11 located in the second heating zone B are inserted into the mounting hole 22 of the mounting base 20. At this time, it can be understood that the axial length of the position of the heating element 11 located in the second heating zone B is less than or equal to the axial length of the mounting hole 22; or the portion of the heating element 11 located in the second heating zone B is inserted into the mounting hole 22 of the mounting base 20. At this time, the axial length of the position of the heating element 11 located in the second heating zone B is greater than the axial length of the mounting hole 22 or less than the axial length of the mounting hole 22; the situation in which the heating component 30 involved in the following embodiments is inserted into the mounting hole 22 may be similar to this.

[0089] Specifically, the length of the first heating area A of the heating rod may be 14.5 mm, and the length of the second heating area B may be 5.2 mm.

[0090] In a specific embodiment, only most of the first heating zone A and the second heating zone B of the first extension portion 111 and the second extension portion 112 are inserted into the aerosol-forming matrix 102, while a small part of the first heating zone A and the second heating zone B remain outside the aerosol-forming matrix 102; or the entire first heating zone A is inserted into the aerosol-forming matrix 102, while the second heating zone B remains outside the aerosol-forming matrix 102; or the entire first heating zone A is inserted into the aerosol-forming matrix 102, and a small part of the second heating zone B is also inserted into the aerosol-forming matrix 102, and only most of the second heating zone B remains outside the aerosol-forming matrix 102.

[0091] In a specific embodiment, the two electrodes 12 are specifically disposed in the second heating zone B of the heating element 11 to reduce the atomization temperature of the ceramic heating element 11 located in the second heating zone B. In this embodiment, 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 11 is greater than 2.

[0092] In one specific embodiment, the resistivity of the material of the portion of the heating element 11 located in the second heating zone B is lower than the resistivity of the material of the portion of the heating element 11 located in the first heating zone A, so that the temperature of the first heating zone A of the heating element 11 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 11 located in the first heating zone A and the portion of the heating element 11 located in the second heating zone B are substantially identical in composition and are integrally formed, but the proportion of ceramic material or other components of the portion of the heating element 11 located in the first heating zone A and the portion of the heating element 11 located in the second heating zone B are different, so that the resistivity of the portion of the heating element 11 located in the first heating zone A and the portion of the heating element 11 located in the second heating zone B are different. Compared with the prior art, 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 11.

[0093] In another specific embodiment, see Figure 21 The width and / or thickness of the first extension portion 111 and the second extension portion 112 of the heating element 11 located in the second heating zone B are greater than the width and / or thickness of the first extension portion 111 and the second extension portion 112 of the heating element 11 located in the first heating zone A, so that the temperature of the first heating zone A of the heating element 11 is greater than the temperature of the second heating zone B; in this embodiment, in order to prevent the mounting base 20 from relative displacement with the heating element 11 during the plugging and unplugging process, thereby affecting the connection stability between the electrode lead and the electrode 12; the widened portion of the second heating zone B of the heating element 11 can be stuck in the mounting base 20, so as to limit the mounting base 20 by the widened portion of the heating element 11. It can be understood that in this embodiment, the partial position corresponding to the first heating zone A of the heating element 11 is also inserted into the mounting base 20.

[0094] Of course, in other embodiments, the temperature of the first heating zone A of the heating element 11 can be greater than the temperature of the second heating zone B by controlling the material; for example, a conductive component is added to the lower half of the heating element 11 to make the resistance of the lower half smaller and the temperature lower when heating. Therefore, in this embodiment, the width and / or thickness of the portion of the first extension portion 111 and the second extension portion 112 located in the second heating zone B can be made the same as the width and / or thickness of the portion of the first extension portion 111 and the second extension portion 112 located in the first heating zone A, which not only facilitates processing but also avoids the problem of tobacco or oil sticking to the widened portion.

[0095] During specific use, the heating component 30 is inserted into the aerosol-forming substrate 102. After power is applied, the heating component 30 starts to work, heats the aerosol-forming substrate 102 and generates smoke.

[0096] The heating component 30 provided in this embodiment includes a heating element 11, which includes a first extension portion 111 and a second extension portion 112 spaced apart from the first extension portion 111, and the first extension portion 111 and the second extension portion 112 are both used to at least partially insert into the aerosol-forming matrix 102 and generate heat when energized to heat the aerosol-forming matrix 102. Compared with the existing resistive heating circuits that are silk-screened or plated on a substrate, the heating element 11 of the present application can be directly and independently inserted into the aerosol-forming matrix 102, and will not fall off from the substrate and cause failure when subjected to high-temperature heating, thereby greatly improving the stability of the heating element 30; at the same time, since the heating element 11 is a self-supporting structure and does not require a substrate, the two opposite surfaces of the heating element 11 can be in direct contact with the aerosol-forming matrix 102, thereby effectively improving the heating uniformity of the aerosol-forming matrix 102 by the heating element 30.

[0097] In this embodiment, see Figures 23 to 28 ,in, Figure 23 A schematic structural diagram of a fixed jacket provided in one embodiment of the present application; Figure 24 A schematic structural diagram of a fixed outer sleeve provided in another embodiment of the present application; Figure 25 A schematic diagram of the structure of a heating component including a fixed outer shell provided in an embodiment of the present application; Figure 26 for Figure 25 A schematic diagram of the structure shown before assembly; Figure 27 A schematic structural diagram of a heating component including a fixed outer shell provided in another embodiment of the present application; Figure 28 for Figure 27 Schematic diagram of the structure before assembly.

[0098] Specifically, the heating element 30 further includes a fixed outer sleeve 13, which is disposed on the outer side of the heating element 11 to enhance the fatigue resistance of the heating element 11 and thereby increase the service life of the heating element 30. Specifically, the fixed outer sleeve 13 can be made of metal, such as steel, and can have a wall thickness of 0.1-0.5 mm.

[0099] In a specific embodiment, the longitudinal length of the fixed jacket 13 is the same as the longitudinal length of the heating element 11, that is, the fixed jacket 13 is mounted on the entire outer surface of the heating element 11. At this time, the mounting base 20 is fixedly mounted on the fixed jacket 13 and corresponds to the second heating area B of the heating element 11. Specifically, when the heating element 11 is a heating plate, the specific structure of the fixed jacket 13 can be seen in Figure 23 The product structure after the fixed jacket 13 and the plate-shaped heating element 11 are installed can be seen in Figure 25 , the disassembly diagram can be found in Figure 26 Specifically, the fixed jacket 13 is also plate-shaped, with one end open and the other closed. The closed end of the fixed jacket 13 forms a pointed tip, and the two opposite side walls of the open end have notches 131. The two electrodes 12 can be respectively disposed on the side surfaces of the first extension 111 and the second extension 112 away from the slot 114, and are exposed through the two notches 131 for connection to the electrode leads 23.

[0100] When the heating element 11 is a heating rod, the specific structure of the fixed jacket 13 can be found in Figure 24 The product structure after the fixed jacket 13 and the rod-shaped heating element 11 are installed can be seen in Figure 27 , the disassembly diagram can be found in Figure 28 Specifically, the fixed jacket 13 is also rod-shaped, with one end open and the other closed. The closed end of the fixed jacket 13 forms a pointed tip, and the two opposite side walls of the open end have notches 131. The two electrodes 12 can be respectively disposed on the side surfaces of the first extension 111 and the second extension 112 away from the slot 114, and are exposed through the two notches 131 for connection to the electrode leads 23.

[0101] For details, see Figure 28 An insulating dielectric layer 24 is disposed between the heating element 11 and the fixed outer jacket 13 to enhance the bonding between the fixed outer jacket 13 and the heating element 11 and prevent short circuits. Specifically, the insulating dielectric layer 24 can be applied to the outer surface of the heating element 11 or the inner surface of the fixed outer jacket 13, depending on the process. The coating thickness can range from 0.05 to 0.1 mm. In one embodiment, the insulating dielectric layer 24 is applied to the surface of the heating element 11, exposing the grooves 114 and electrodes 12.

[0102] Specifically, the length of the fixed jacket 13 is the same as or less than the length of the heating element 11. It is understood that since the fixed jacket 13 has a pointed end, the third extension portion 113 may also not have a pointed end for ease of processing.

[0103] In another specific embodiment, see Figure 29 , Figure 29 This is a schematic diagram of a structure in which a fixed jacket is provided in an embodiment of the present application and is mounted on the outer surface of the first heating zone of the heating element; the longitudinal length of the fixed jacket 13 is less than the longitudinal length of the heating element 11. Specifically, in one embodiment, the fixed jacket 13 is only mounted on the outer surface of the portion corresponding to the entire or part of the first heating zone A of the heating element 11 (see FIG. Figure 29 ); In another embodiment, the fixed sleeve 13 is mounted on the outer surface of the portion corresponding to the entire first heating zone A of the heating element 11, and the outer surface of the portion corresponding to the portion of the second heating zone B; at this time, the mounting base 20 is fixed to the portion of the heating element 11 exposed from the fixed sleeve 13, and the mounting base 20 is in contact with one end of the fixed sleeve 13 close to the mounting base 20; in this way, the two surfaces of the heating element 11 can be directly fixed to the mounting base 20, and the portions of the first extension portion 111 and the second extension portion 112 inserted into the aerosol-forming matrix 102 are strengthened and will not be deformed or broken.

[0104] See also Figures 30 to 32 ,in, Figure 30 This is a schematic diagram of the structure after the mounting base and the heating plate are assembled according to an embodiment of the present application; Figure 31 This is a schematic diagram of the structure after the mounting base and the heating rod are assembled according to an embodiment of the present application; Figure 32 This is a structural diagram of the mounting base and the heating rod after assembly according to another embodiment of the present application; in this embodiment, when the heating element 11 is a heating plate, the product structure after the mounting base 20 and the heating element 11 are assembled can be seen in FIG. Figure 30 When the heating element 11 is a heating rod and the heating element 11 is not provided with a fixed outer cover 13, the product structure after the mounting base 20 and the heating element 11 are assembled can be seen in FIG. Figure 31 When a fixed jacket 13 is provided on the outside of the heating element 11, the mounting base 20 can be installed on the heating element 11 or the fixed jacket 13 according to the actual situation. For example, when the length of the fixed jacket 13 is the same as that of the heating element 11, the mounting base 20 can be installed on the fixed jacket 13. Figure 32When the length of the fixed jacket 13 is less than the length of the heating element 11, the end of the heating element 11 coated with the electrode 12 is exposed outside the fixed jacket 13, and the mounting base 20 is fixed to the end of the heating element 11 exposed outside the fixed jacket 13, that is, fixed to the second heating area B of the heating element 11, and the mounting base 20 abuts against the end of the fixed jacket 13 near the mounting base 20. Preferably, when the end of the heating element 11 coated with the electrode 12 is exposed outside the fixed jacket 13, the mounting base 20 is fixed to the open end of the fixed jacket 13, that is, the open end of the fixed jacket 13 is inserted into the mounting base 20, and the end of the heating element 11 coated with the electrode 12 passes through the mounting base 20.

[0105] See also Figures 33 to 35 ,in, Figure 33 A schematic structural diagram of a heating component provided in a fourth embodiment of the present application; Figure 34 Provided for an embodiment of this application Figure 33 Schematic diagram of the corresponding product disassembly; Figure 35 This is a schematic diagram of a heating component provided in an embodiment of the present application being inserted into an aerosol atomizing matrix. In this embodiment, a heating component 30 is provided, which includes a substrate 31 and a heating element 32 embedded in the substrate 31. Specifically, in this embodiment, the structure of the heating component 30 inserted into the aerosol forming matrix 102 can be seen in FIG. Figure 35 .

[0106] 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 102, the second end N of the substrate 31 is first inserted into the aerosol-forming matrix 102. Therefore, in order to facilitate the insertion of the heating component 30 into the aerosol-forming matrix 102, 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.

[0107] Specifically, the material of the substrate 31 can be insulating ceramic. The thermal conductivity of the substrate 31 made of insulating ceramic can be 4-18W / (mk), the flexural strength can be above 600MPa, 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 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 102. The material of the substrate 31 can also be a new type of composite zirconia material. The new type of composite zirconia substrate 31 can insulate and transfer the heat generated by the heating element 32 to increase the energy utilization rate 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).

[0108] 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 102, the substrate 31 is subjected to force, thereby preventing the heating element 32 from being bent due to direct force.

[0109] 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 102, both surfaces of the heating element 32 can be in direct contact with the tobacco in the aerosol-forming matrix 102, which not only has high energy utilization efficiency, but also has relatively uniform heating and a clear boundary of the preset temperature field.

[0110] 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.

[0111] Specifically, 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; in another embodiment, the heating element 32 also includes a third extension portion 323 for fully inserting and heating the aerosol-forming matrix 102; specifically, in this embodiment, the first extension portion 321 and the second extension portion 322 are arranged in parallel and spaced apart, and the ends of the first extension portion 321 and the second extension portion 322 that are close to each other are connected by the third extension portion 323; specifically, the first extension portion 321, the second extension portion 322 and the third extension portion 323 define a groove 328, and the specific structure and function of the heating element 32 formed by the first extension portion 321, the second extension portion 322 and / or the third extension portion 323 can refer to the structure and function of the heating element 11 in the heating component 30 provided in the first embodiment above, and will not be repeated here.

[0112] See also Figure 34 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 102.

[0113] For details, see Figure 33 and Figure 34 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).

[0114] In one embodiment, see Figure 34 An adhesive layer 34 is further provided at the junction of the substrate 31 and the heating element 32 to enhance the 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 to form a seamless joint.

[0115] 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.

[0116] See also Figure 33 and Figure 34 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 33 The 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 when connected to a power source, the metal substrate 31 can generate heat, thereby improving heating efficiency. Specifically, the end of the first extension portion 321 away from the third extension portion 323 is the first connection end (or second connection end), and the end of the second extension portion 322 away from the third extension portion 323 is the second connection end (or first connection end).

[0117] In one embodiment, see Figure 34In 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 20 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 20 from being damaged by high temperature. Specifically, in this embodiment, the first electrode 33a and the second electrode 33b can also be formed by coating to improve the bonding force between the electrodes and the heating element 32, thereby improving the connection stability between the electrode leads connected to the electrodes and the heating element 32.

[0118] In specific embodiments, see Figure 36 , Figure 36 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. This layer prevents tobacco oil formed during tobacco heating from damaging the first and second electrodes 33a, 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 element 30 with a smooth surface.

[0119] For details, see Figure 33The 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 102 for heating, so that the substrate 31 and the heating element 32 are at least partially inserted into the aerosol-forming matrix 102, 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, that is, the temperature of the first heating zone A is higher than the temperature of the second heating zone B, and the portion of the heating element 32 located in the second heating zone B is fixed to the mounting base 20 to prevent the first heating zone A from heating. The temperature of the second heating zone B is too high and damages the mounting base 20 (for example, PEEK is a plastic and may melt), or when the temperature of the second heating zone B is too high, the mounting base 20 (for example, a ceramic fixing base) transmits the high temperature to other parts of the aerosol forming device, making the outer shell temperature too hot or damaging the internal circuit board, and the temperature conduction will reduce the heat utilization of the first heating zone A; 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. Specifically, the method for controlling the temperature of the first heating zone A and the second heating zone B of the heating element 32 can be specifically referred to the solution provided in the first embodiment above, and will not be repeated here.

[0120] 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 substrate 102 is inserted, the aerosol-forming substrate 102 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 substrate 102 and generate heat when powered on to heat the aerosol-forming substrate 102; compared with the existing screen printing on the substrate The resistive heating circuit on the aerosol forming matrix 102 is directly and independently inserted into the substrate 31 and the heating element 32 of the present application, and there will be no problem of the heating element 32 falling off from the substrate 31 and causing failure during 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 102, effectively avoiding the problem of the heating element 32 bending due to force.

[0121] In one embodiment, see Figure 34, wherein, a first flange 312 which is smaller 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 corresponding to at least a part of the first heating area A of the heating element 32. The heating element 32 is specifically overlapped with 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 cut according to a preset size by laser to form the stepped substrate 31 with the first flange 312 involved above, which can effectively ensure the dimensional accuracy of the product and greatly improve the supporting strength of the first flange 312.

[0122] In one embodiment, see Figure 34 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.

[0123] In one embodiment, see Figure 34 and Figure 35 The first heating zone A and the second heating zone B can be that only the whole or part of the first heating zone A of the heating element 32 is accommodated in the accommodating groove 311, and the second heating zone B is suspended. Figure 33 At this time, the schematic diagram of the heating component 30 inserted into the aerosol-forming substrate 102 can be seen in Figure 35 , or all the positions corresponding to the first heating zone A are accommodated in the accommodating groove 311, and a small part of the positions corresponding to the second heating zone B are also accommodated in the accommodating groove 311, while most of the positions corresponding to the second heating zone B are suspended. At this time, the suspended part of the mounting base 20 and the heating element 32 is fixed.

[0124] Specifically, in this embodiment, the substrate 31 can be fully or partially inserted into the aerosol-forming matrix 102, and the heating element 32 is still partially inserted into the aerosol-forming matrix 102; specifically, only most or all of the first heating area A of the heating element 32 is inserted into the aerosol-forming matrix 102, and the portion corresponding to the second heating area B remains outside the aerosol-forming matrix 102, that is, not inserted into the aerosol-forming matrix 102; 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 102, while the portion corresponding to most of the second heating area B remains outside the aerosol-forming matrix 102.

[0125] In this embodiment, see Figure 37 and Figure 38 ,in, Figure 37 A schematic structural diagram of a heating component provided in a fifth embodiment of the present application; Figure 38 for Figure 37 Schematic diagram of the corresponding disassembly of the heating element; the first extension 321 and the second extension 322 located in the second heating zone B have first and second protrusions 3211 and 3221 arranged in opposite directions. This ensures that the width of the portion of the heating element 32 located in the second heating zone B is greater than that located in the first heating zone A. This ensures the strength of the second heating zone B of the heating element 32 and reduces the resistance of the second heating zone B relative to the resistance 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 of the substrate 31 is less than the length of the heating element 32.

[0126] 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 38 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.

[0127] Specifically, 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.

[0128] In a specific embodiment, Figure 34 The structural dimensions of the corresponding heating element 32 can be found in Figure 39 , Figure 39 for Figure 37Schematic diagram of the size of the corresponding heating component; in this embodiment, the total width of the substrate 31 can be 6-10 mm, such as 6 mm, and the total thickness can be 0.3-0.6 mm, such as 0.5 mm; wherein the width of the first surface C1 of the substrate 31 can be 0.5-1 mm, such as 0.75 mm, and the width of the second surface D1 of the substrate 31 can be 1-2 mm, such as 1.25 mm. In this embodiment, the thickness of the first flange 312, that is, the thickness along the axial direction of the accommodating groove 311 can be 0.2-0.3 mm, such as 0.25 mm, and the axial length of the first flange 312 can be 6-10 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 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 height corresponding to 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.

[0129] In specific embodiments, see Figures 40 to 42 ,in, Figure 40 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 41 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 42 for Figure 41 Schematic diagram of the disassembly of the corresponding product; Specifically, when the first extension portion 321 and the second extension portion 322 are located in the second heating zone B without a protrusion, the product structure after the mounting base 20 and the heating component 30 are fixed can be seen in FIG. Figure 40 When the first extension portion 321 and the second extension portion 322 are located in the second heating zone B, the product structure after the mounting base 20 and the heating component 30 are fixed can be seen in FIG. Figure 41 and Figure 42 .

[0130] See also Figure 43 and Figure 44 ,in, Figure 43A schematic diagram of the structure of a mounting base and a heating component after assembly according to another embodiment of the present application; Figure 44 A specific embodiment of the present application provides Figure 43 A schematic diagram of the disassembly of the heating component in the product shown; in this embodiment, a heating component 30 is provided, which includes a heating body 91, a first electrode 92a and a second electrode 92b.

[0131] Among them, the heating element 91 is used to insert into and heat the aerosol-forming matrix 102; compared with the existing resistive heating circuit formed by silk-screen printing or coating on the substrate, the heating element 91 can be directly and independently inserted into the aerosol-forming matrix 102, and there will be no problem of the heating element 91 falling off from the substrate and causing failure when subjected to high-temperature heating, which greatly improves the stability of the heating component 30; specifically, the heating element 91 has a first connection end E and a second connection end F opposite to the first connection end E. When the heating element 91 is inserted into the tobacco, the second connection end F of the heating element 91 is inserted into the tobacco first. Therefore, in order to facilitate the insertion of the heating element 91 into the tobacco, the second connection end F of the heating element 91 can be specifically set to a tip, that is, a triangular structure to form a tip portion D; and the angle formed by the two adjacent sides of the tip can be specifically 45 degrees to 90 degrees, for example 60 degrees. Specifically, the first electrode 92a and the second electrode 92b are disposed at the first connection end E of the heating element 91. The first electrode 92a is electrically connected to the first connection end E of the heating element 91, while the second electrode 92b is insulated from the first connection end E of the heating element 91 to prevent a short circuit. The second electrode 92b extends from the first connection end E of the heating element 91 to the second connection end F and is electrically connected to the second connection end F, thereby forming a current loop between the first connection end E and the second connection end F of the heating element 91. This not only simplifies the manufacturing process but also effectively improves the overall strength of the heating assembly 30 while reducing adhesion to tobacco and atomized tobacco liquid during use.

[0132] Specifically, the shape and size of the heating element 91 are not limited and can be designed as needed. In a specific embodiment, the heating element 91 is in a strip shape, such as a rectangle with one end of the rectangle forming a tip.

[0133] For details, see Figure 43The heating element 91 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 102 for heating, 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 area, and the second heating zone B is the main matching section of the heating element 91, and the temperature is below 150°C; that is, the temperature of the first heating zone A is higher than the temperature of the second heating zone B, and the portion of the heating element 91 located in the second heating zone B is fixed to the mounting seat 20 to prevent the temperature of the second heating zone B from being too high and damaging the mounting seat 20 (for example, PEEK may melt as it is plastic) or the mounting seat from being damaged when the temperature of the second heating zone B is too high. 20 (such as a ceramic fixing seat) transfers the high temperature to other parts of the aerosol forming device, causing the outer shell temperature to be too hot or the internal circuit board to be damaged, and the temperature conduction will reduce the heat utilization of the first heating zone A; specifically, the ratio of the heating temperature of the first heating zone A of the heating element 91 to the heating temperature of the second heating zone B may be greater than 2; in a specific embodiment, the first electrode 92a is specifically arranged in the second heating zone B of the heating element 91 to reduce the atomization temperature of the ceramic heating element 91 located in the second heating zone B; it can be understood that the first connection end E of the heating element 91 is located at the position where the second heating zone B of the heating element 91 is located, and the second connection end F is located at the position where the first heating zone A of the heating element 91 is located. Specifically, the material and temperature control method of the first heating zone A and the second heating zone B of the heating element 91 can refer to the temperature control method of the first heating zone A and the second heating zone B provided in the first embodiment above, which will not be repeated here.

[0134] In a specific embodiment, of the first heating area A and the second heating area B of the heating element 91, only the majority of the first heating area A is inserted into the aerosol-forming substrate 102, while a small portion of the first heating area A and the second heating area B remains outside the aerosol-forming substrate 102; or the entire first heating area A is inserted into the aerosol-forming substrate 102, while the second heating area B remains outside the aerosol-forming substrate 102; or the entire first heating area A is inserted into the aerosol-forming substrate 102, and a small portion of the second heating area B is also inserted into the aerosol-forming substrate 102, while only the majority of the second heating area B remains outside the aerosol-forming substrate 102. In this case, the portion of the heating element 91 remaining outside the aerosol-forming substrate 102 is fixed to the mounting base 20.

[0135] Specifically, the first electrode 92a and the second electrode 92b in this embodiment can also be set on the surface of the heating element 91 by coating to improve the bonding force between the first electrode 92a and the second electrode 92b and the heating element 91, thereby improving the connection stability between the electrode lead 95 connected to the first electrode 92a and the second electrode 92b and the heating element 91.

[0136] In one embodiment, see Figure 44The heating element 91 may be plate-shaped and include a main body C and a tip D connected to one end of the main body C. The second connection end F of the heating element 91 is the tip D, and the first connection end E of the heating element 92 is the end of the main body C away from the tip D. The end of the second electrode 92b away from the second connection end F is disposed at the first connection end E of the heating element 92. Specifically, the main body C may be rectangular, and the tip D may be triangular, arc-shaped, or an isosceles trapezoid.

[0137] Specifically, the heating element 91 may be a long strip heating plate.

[0138] In one embodiment, see Figure 44 , the first electrode 92a and the second electrode 92b are arranged on both sides of the heating plate opposite to each other; specifically, the first electrode 92a is coated on the first surface M of the heating plate and is electrically connected to the first connection end E of the heating plate, and the second surface N of the heating plate, which is opposite to the first surface M, is provided with an insulating layer 93, and the insulating layer 93 extends from the first connection end E of the heating plate to a position close to the second connection end F, and the heating element 91 is exposed to the second surface N of the second connection end F from the insulating layer 93; the second electrode 92b is specifically arranged on the surface of the insulating layer 93 away from the heating plate, and extends toward the second connection end F of the heating element 91, and a portion of the second electrode 92b extends outside the insulating layer 93 to contact and electrically connect with the second connection end F of the heating plate. It can be understood that the first electrode 92a can also be coated on the first surface M, the second surface N and the side of the heating plate, that is, to form a ring. Among them, the portion of the first electrode 92a coated on the second surface N of the heating plate is arranged between the insulating layer 93 and the heating plate.

[0139] Specifically, the first electrode 92a may be a rectangular structure, and the insulating layer 93 may be T-shaped; specifically, the second electrode 92b includes a first coating portion 921, a second coating portion 922, and a third coating portion 923; wherein, the first coating portion 921 is coated on the side surface of the insulating layer 93 away from the heating element 91 and is arranged opposite to the first electrode 92a, and the shape of the first coating portion 921 is the same as that of the first electrode 92a, the second coating portion 922 is connected to the first coating portion 921, coated on the side surface of the insulating layer 93 away from the heating element 91 and has the same shape as the extension portion of the insulating layer 93, the third coating portion 923 is connected to the second coating portion 922, directly coated on the second surface N of the heating element 91 and electrically connected to the second connection end F of the heating element 91, and the third coating portion 923 is perpendicular to the second coating portion 922, and it can be a long rectangular structure; specifically, the first coating portion 921, the second coating portion 922 and the third coating portion 923 form an I-shaped structure. It can be understood that the insulating layer 93 and the second electrode 92b are not limited to the above shapes and can be designed as needed; in a specific embodiment, the sizes of the first coating part 921, the second coating part 922, and the third coating part 923 are smaller than the sizes of the insulating layer 93 at the corresponding positions.

[0140] In one embodiment, at least one surface of the heating element 91 is further coated with a protective layer 94, which covers at least the first electrode 92a and the second electrode 92b to prevent the tobacco oil formed when heating the tobacco from damaging the first electrode 92a and the second electrode 92b; of course, the protective layer 94 can also cover the entire surface of the heating element 91 (see Figure 44 ), thereby protecting the first electrode 92a, the second electrode 92b and the heating element 91 while making the entire heating element 91 have a smooth surface. Specifically, the protective layer 94 can be a glass glaze layer.

[0141] In another specific embodiment, see Figure 45 , Figure 45 Another specific embodiment of the present application provides Figure 43 Schematic diagram of the disassembly of the heating component in the product shown; different from the first specific embodiment described above, the first electrode 92a and the second electrode 92b are arranged on the same side of the heating element 91. Specifically, the first electrode 92a is coated on the first surface M of the heating element 91 and is electrically connected to the first connection end E of the heating plate; specifically, the surface of the first electrode 92a away from the heating plate is provided with an insulating layer 93, the insulating layer 93 covers the first electrode 92a and extends from the first connection end E of the heating plate to a position close to the second connection end F, the second electrode 92b is specifically provided on the surface of the insulating layer 93 away from the first electrode 92a, and extends toward the second connection end F of the heating element 91, and a portion of the second electrode 92b extends outside the insulating layer 93 to contact and electrically connect with the second connection end F of the heating plate.

[0142] Specifically, the first electrode 92a may have a rectangular structure, and the insulating layer 93 may have a T-shape. Specifically, the portion of the insulating layer 93 covering the first electrode 92a has the same shape as the first electrode 92a, and is slightly larger than or the same size as the first electrode 92a. It will be appreciated that the shape and size of the portion of the insulating layer 93 covering the first electrode 92a are not limited, as long as the first electrode 92a can be insulated from the second electrode 92b. For example, the insulating layer 93 may cover the entire first electrode 92a, or the insulating layer 93 may cover a portion of the first electrode 92a but be larger than the second electrode 92b.

[0143] In a specific embodiment, a first electrode 92a may be further provided at a position opposite to the first electrode 92a on the second surface N of the heating element 91, and a second electrode 92b may be further provided at a position opposite to the second electrode 92b through the insulating layer 93, that is, the number of first electrodes 92a and second electrodes 92b are both two, so that the conductive components of the conductive ceramic can have a shorter current path close to the two surfaces of the conductive ceramic, so that the temperature field on the two surfaces of the heating element 91 is more uniform.

[0144] The heating element 30 provided in this embodiment is provided with a heating element 91, so that after the aerosol-forming substrate 102 is inserted, the heating element 91 heats the aerosol-forming substrate 102. Compared with the existing resistive heating circuits that are screen-printed or plated on the substrate, the heating element 91 can be directly and independently inserted into the aerosol-forming substrate 102, and the problem of the heating element 91 falling off from the substrate and causing failure when heated at high temperatures will not occur, which greatly improves the stability of the heating element 30. At the same time, by setting the heating element 91 in a plate shape, the aerosol-forming substrate 102 is effectively increased. 02 and the contact area with the heating element 91, thereby improving energy utilization and heating efficiency; in addition, by setting a first electrode 92a and a second electrode 92b insulated from the first electrode 92a, and setting the first electrode 92a at the first connection end E of the heating element 91 and electrically connecting it to the first connection end E, one end of the second electrode 92b is electrically connected to the second connection end F, so that a current loop is formed between the first connection end E and the second connection end F of the heating element 91, not only can the short circuit problem be avoided, but the processing technology is also simpler, and the strength of the heating component 30 is higher.

[0145] Of course, in other embodiments, see Figure 46 and Figure 47 ,in, Figure 46 A cross-sectional view of heating elements provided in parallel according to an embodiment of the present application; Figure 47This is a cross-sectional view of another embodiment of the present application, wherein the heating elements are arranged in parallel. The heating assembly 30 includes at least two heating elements 91, and the at least two heating elements 91 are arranged in parallel. In one specific embodiment, there can be two heating elements 91, which are arranged opposite each other with an insulating layer 93 disposed between them.

[0146] In one embodiment, see Figure 46 , a first electrode 92a is provided on the opposite side surface of the two heating elements 91, and the first electrode 92a is provided at the first connection end E of the two heating elements 91; in this embodiment, the second electrode 92b is provided on the insulating layer 93, and extends from the first connection end E of the heating element 91 to a position close to the second connection end F, and is electrically connected to the second connection end F of the two heating elements 91 respectively, so that the two heating elements 91 form a current loop between the first electrode 92a and the second electrode 92b and are arranged in parallel.

[0147] In another specific embodiment, see Figure 47 , the first electrode 92a is arranged at the position of the first connection end E of the corresponding heating element 91 of the insulating layer 93, and is electrically connected to the first connection end E of the two heating elements 91; and in this embodiment, the second connection ends F of the two heating elements 91 are respectively connected to their corresponding second electrodes 92b, so that the two heating elements 91 are arranged in parallel through the first electrode 92a and their respective corresponding second electrodes 92b; specifically, the opposite side surfaces of the two heating elements 91 are coated with an insulating layer 93, and the second electrode 92b on each heating element 91 is arranged on the side surface of the insulating layer 93 away from the heating element 91, and extends from the first connection end E of the heating element 91 to a position close to the second connection end F, so as to be connected to the second connection end F of the heating element 91.

[0148] In another embodiment, see Figure 48 , Figure 48 Schematic diagram of the structure of the heating component provided in the sixth embodiment of the present application; different from the first embodiment described above, the heating element 91 can be specifically cylindrical and includes a main body C and a tip portion D connected to one end of the main body C, the second connection end F of the heating element 91 is the tip portion D, and the first connection end E of the heating element 91 is the end of the main body C away from the tip portion D; in a specific embodiment, the main body C can be cylindrical, and the tip portion D can be conical or truncated cone; specifically, the heating element 91 can be as follows Figure 48 In the heating rod shown, the second connecting end F of the heating rod is a pointed end to facilitate insertion into tobacco.

[0149] For details, see Figure 49 , Figure 49 A specific embodiment of the present application provides Figure 48Schematic diagram of the disassembly of the structure shown; the first electrode 92a is arranged on at least a portion of the surface of the first connecting end E of the heating rod; an insulating layer 93 is provided on the outer wall of the main body C of the heating rod, and the insulating layer 93 extends from the first connecting end E of the heating rod to a position close to the second connecting end F, and makes the main body C close to the tip D exposed to the insulating layer 93, and the second electrode 92b is arranged on the surface of the insulating layer 93 away from the heating rod, and a portion of the second electrode 92b extends outside the insulating layer 93 and is in contact with the second connecting end F of the heating rod, that is, a portion of the second electrode 92b extends outside the insulating layer 93 and is in contact with the second connecting end F of the main body C of the heating element 91 close to the tip D and exposed to the insulating layer 93.

[0150] Furthermore, in one embodiment, the first electrode 92a is disposed around the outer wall of the heating rod, and may be in an arc-shaped structure. In this embodiment, the insulating layer 93 is disposed around the circumferential direction of the heating rod, and a notch is provided at the insulating layer 93 corresponding to the position where the first electrode 92a is disposed on the heating rod, so that the first electrode 92a is at least partially exposed through the notch, thereby facilitating the connection of the electrode lead 95. In one embodiment, the portion of the second electrode 92b extending outside the insulating layer 93 may be disposed around the main body C of the heating rod, and may be in an annular structure, so as to maintain an effective connection between the second electrode 92b and the second connection end F of the heating rod. Of course, in other embodiments, the first electrode 92a may also include a bottom surface extending to the heating rod near the first connection end E to increase the overall bonding strength and electrical reliability.

[0151] In another specific embodiment, the first electrode 92a can also be arranged around the outer wall of the heating rod and have a ring structure. The insulating layer 93 can specifically completely cover the first electrode 92a and be arranged around the outer wall of the heating rod. This embodiment does not impose any restrictions on this, as long as the insulating layer 93 can prevent the first electrode 92a and the second electrode 92b from short-circuiting.

[0152] In one embodiment, at least one surface of the heating rod is coated with a protective layer 94, which covers at least the first electrode 92a and the second electrode 92b to prevent the tobacco oil formed when heating the tobacco from damaging the first electrode 92a and the second electrode 92b; of course, in other embodiments, see Figure 50 , Figure 50 This is a schematic diagram of a heating assembly with a protective layer coating the entire surface of a heating rod according to one embodiment of the present application. The protective layer 94 can also cover the entire surface of the heating rod, thereby protecting the first electrode 92a, the second electrode 92b, and the heating rod while providing a smooth surface. Specifically, the protective layer 94 can be a glass glaze layer.

[0153] In a specific embodiment, the resistance of the heating rod may be 0.3-1 ohm, for example, 0.6 ohm, and the resistivity may be 1*10 -4 Ohm-4*10 -4 Ohm, specifically 2*10 -4 Ohm, the power can be 2W-5W, specifically 3.5W. Figure 50 The total length L41 of the heating rod can be 18-20 mm, the length L42 thereof for inserting into tobacco can be specifically 14-15 mm, and the diameter φ of the heating rod can be specifically 2.0-3.0 mm, such as 3 mm.

[0154] It should be noted that, in the specific processing process, silver is first coated on the heating rod to form an electrode, then an insulating dielectric layer is coated on other positions on the surface of the heating rod, and then the electrode lead 95 is welded to prevent the electrode lead 95 from contacting the heating rod.

[0155] Specifically, by setting the heating element 91 into a columnar shape, it is not only convenient to insert the heating element 91 into the tobacco, but also the columnar heating element 91 is easy to process, which effectively reduces the processing difficulty coefficient.

[0156] Specifically, the heating element 11 (or 32 or 91) involved above can be a self-supporting structure, that is, the heating element 11 (or 32 or 91) can exist independently without relying on other carriers; compared with the existing resistive heating circuit formed by printing or coating the resistive heating element on the substrate, the heating element 11 (or 32 or 91) with a self-supporting structure can be directly and independently inserted into the aerosol-forming matrix 102, and will not fall off from the substrate or metal substrate when heated at high temperature, which greatly improves the stability of the heating component 30; and because the heating element 11 (or 32 or 91) is a self-supporting structure and does not require a substrate, the two opposite surfaces of the heating element 11 (or 32 or 91) can be in direct contact with the tobacco in the aerosol-forming matrix 102, which not only has high energy utilization, but also heats the tobacco more evenly, and the preset temperature field boundary is clear, especially low-voltage startup facilitates instant power control and design.

[0157] Specifically, the material of the heating element 11 (or 32 or 91) can be conductive ceramic. Compared with the existing metal material, the heating element 11 (or 32 or 91) made of ceramic material has a higher conductivity efficiency and the temperature generated by heating is more uniform. The heating element 11 (or 32 or 91) made of ceramic can be adjusted and designed at 3-4 watts, and the conductivity can reach 1*10 -4 Ohm-1*10 -6 Ohm, the bending strength is greater than MPa, and the fire resistance is higher than 1200°C; at the same time, the heating element 11 (or 32 or 91) made of the ceramic has the characteristic of full-range starting voltage.

[0158] Specifically, the electromagnetic heating wavelength of the material of the heating element 11 (or 32 or 91) made of ceramic is a mid-infrared wavelength, which is conducive to atomizing the tobacco oil and improving the taste; in addition, the crystal phase structure of the heating element 11 (or 32 or 91) made of ceramic is a high-temperature stable oxide ceramic. Since oxide ceramics have good fatigue resistance, high strength and high density, they can effectively avoid the volatilization of harmful heavy metals and dust problems, thereby greatly improving the service life of the heating element 11 (or 32 or 91).

[0159] The above-mentioned use of a whole ceramic heating element 11 (or 32 or 91) 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 11 (or 32 or 91) is easier to clean and less likely to stick; in addition, the heating element 11 (or 32 or 91) is manufactured using a ceramic production process, which 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.

[0160] Specifically, the heating element 11 (or 32 or 91) made of the conductive ceramic specifically includes a main component and a crystal component; wherein the main component is used to conduct electricity and make the heating element 11 (or 32 or 91) of the conductive ceramic form a certain resistance; it can specifically be one or more of manganese, strontium, lanthanum, tin, antimony, zinc, bismuth, silicon, and titanium; the crystal component, that is, the main ingredient of the ceramic material, is mainly used to form the shape and structure of the conductive ceramic, and it can specifically 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 11 (or 32 or 91) can also be a ceramic alloy made of a metal alloy or an iron-silicon-aluminum alloy.

[0161] The heating component 30 provided in the embodiment of the present application can directly adopt a self-supporting ceramic heating plate (or heating rod) for heating, and the heating element 11 (32 or 91) 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 11 (or 32 or 91) is made of ceramic material, and compared with the existing resistance heating circuit formed by coating metal heating material on the base, it can contact the tobacco on both sides at the same time and heat the tobacco, and the heating is more uniform and stable.

[0162] See also Figure 51 , Figure 51 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 100 is provided, which includes a shell 101 and a heater assembly 10 and a power supply assembly 40 arranged in the shell 101.

[0163] Among them, the heater component 10 can be the heater component 10 provided in the above-mentioned embodiment. Its specific structure and function can be found in the relevant text description of the heater component 10 in the above-mentioned embodiment, which will not be repeated here; specifically, the heater component 10 is installed on the inner wall of the shell 101 through the mounting seat 20; and the heater component 10 is connected to the power supply component 40 to supply power to the heating element in the heater component 10 through the power supply component 40; specifically, the power supply component 40 can be a rechargeable lithium-ion battery.

[0164] The aerosol forming device 100 provided in this embodiment is provided with a heater assembly 10. The heater assembly 10 is provided with a heating component 30. The heating component 30 is provided to have a structure including a heating element 11 (or 32 or 91). At least a portion of the heating element 11 (or 32 or 91) is inserted into and heats the aerosol forming matrix 102. Compared with the existing resistive heating circuit silk-screened on the substrate, the heating element 11 (or 32 or 91) of the present application can be directly and independently inserted into the aerosol forming matrix 102, and will not fall off from the substrate when heated at high temperature and cause failure, thereby greatly improving the stability of the heating component 30. At the same time, by providing an installation The mounting base 20 fixes the heating element 11 (or 32 or 91) to the mounting base 20, so as to fix the heating component 30 in the aerosol forming device 100 through the mounting base 20; wherein, since the heating element 11 (or 32 or 91) itself can be independently inserted into the aerosol forming matrix 102, that is, the heating element 11 (or 32 or 91) is essentially a self-supporting structure. Compared with the existing solution in which the resistive heating circuit is a thin film, fixing the mounting base 20 to the heating element 11 (or 32 or 91) provided in the present application can effectively avoid the problem of the mounting base 20 affecting the resistive heating circuit; and there is no need to provide a separate mounting substrate to install the mounting base 20, which effectively reduces the production cost.

[0165] The above description 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 heater assembly, characterized in that include: Mounting seat; A heating element, comprising a heating element having a first connection end and a second connection end opposite the first connection end; wherein the heating element is fixed to the mounting base, and at least a portion of the heating element is used to insert into and heat the aerosol-forming substrate; the heating element is made of conductive ceramic; the heating element further comprises a substrate having a receiving groove, and at least a portion of the substrate is inserted into the aerosol-forming substrate; In which, the heating element includes a first heating zone and a second heating zone connected to the first heating zone, wherein the resistivity of the portion of the heating element located in the second heating zone is smaller than the resistivity of the portion of the heating element located in the first heating zone, so that the temperature of the second heating zone is lower than the temperature of the first heating zone; and the portion of the heating element located in the second heating zone is fixed to the mounting seat, and the portion of the heating element located in the first heating zone is used to insert and heat the aerosol-forming matrix; of the first heating zone and the second heating zone of the heating element, only the first heating zone is embedded in the accommodating groove of the substrate.

2. The heater assembly according to claim 1, wherein The heating component further includes: a first electrode electrically connected to the first connection end of the heating element; The second electrode is electrically connected to the second connection end of the heating element.

3. The heater assembly according to claim 2, wherein: The heating element includes a first extension portion arranged at an interval and a second extension portion connected to one end of the first extension portion, and the first extension portion and the second extension portion are both used to at least partially insert into the aerosol-forming substrate and generate heat when powered to heat the aerosol-forming substrate.

4. The heater assembly according to claim 3, wherein The first extension portion and the second extension portion are arranged in parallel and spaced apart, and the heating component also includes a third extension portion for fully inserting and heating the aerosol-forming matrix. The ends of the first extension portion and the second extension portion that are close to each other are connected through the third extension portion, and the first electrode is arranged at an end of the first extension portion away from the third extension portion, and the second electrode is arranged at an end of the second extension portion away from the third extension portion.

5. The heater assembly according to claim 3 or 4, characterized in that The heating component further comprises a fixed outer sleeve which is sleeved on the outer side of the heating element.

6. The heater assembly according to claim 1, wherein The substrate has a first surface and a second surface opposite to the first surface. The accommodating groove is a through groove that passes through the first surface and the second surface, so that the part of the heating element located in the first heating area is exposed from one side of the first surface and one side of the second surface respectively.

7. The heater assembly according to claim 1 or 6, wherein: The accommodating groove is close to the second surface of the substrate and is provided with a first flange at at least a portion of a position corresponding to the first heating area of the heating element, and a portion of the heating element located in the first heating area is overlapped on the first flange.

8. The heater assembly according to claim 7, wherein The heating element includes a first extension portion arranged at intervals and a second extension portion connected to one end of the first extension portion. The parts of the first extension portion and the second extension portion located in the second heating zone have a first protrusion portion and a second protrusion portion arranged opposite to each other. The first protrusion portion and the second protrusion portion are respectively abutted against the end portions of the substrate; the first protrusion portion and the second protrusion portion are inserted into the mounting seat.

9. The heater assembly according to claim 8, wherein 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.

10. The heater assembly according to claim 2, wherein The first electrode is insulated from the second electrode, and the first electrode is arranged at the first connection end of the heating element and electrically connected to the first connection end; one end of the second electrode is electrically connected to the second connection end, and the other end extends toward the first connection end of the heating element.

11. The heater assembly according to claim 10, wherein The heating element is plate-shaped and includes a main body and a tip connected to one end of the main body. The second connection end of the heating element is the tip, and the first connection end of the heating element is the end of the main body away from the tip; the end of the second electrode away from the second connection end is arranged at the first connection end of the heating element.

12. The heater assembly according to claim 11, wherein The first electrode is arranged on the first surface of the heating element; An insulating layer is provided on the second surface of the heating element, and the insulating layer extends from the first connection end of the heating element to a position close to the second connection end. The second surface of the heating element at the second connection end is exposed to the insulating layer, and the second electrode is provided on the surface of the insulating layer away from the heating element, and a portion of the second electrode extends outside the insulating layer and is provided in contact with the second connection end of the heating element; wherein the first surface and the second surface are provided opposite to each other.

13. The heater assembly of claim 11, wherein: The first electrode is arranged on the first surface of the heating element; An insulating layer is provided on the surface of the first electrode away from the heating element, and the insulating layer extends from the first connection end of the heating element to a position close to the second connection end. The second electrode is provided on the surface of the insulating layer away from the first electrode, and a portion of the second electrode extends outside the insulating layer and is provided in contact with the second connection end of the heating element.

14. The heater assembly according to claim 10, wherein The heating element is columnar and includes a main body and a tip connected to one end of the main body. The second connection end of the heating element is the tip, and the first connection end of the heating element is the end of the main body away from the tip.

15. The heater assembly of claim 14, wherein: The first electrode is provided on at least a portion of the surface of the first connection end of the heating element; An insulating layer is provided on the outer wall of the main body of the heating element, and the insulating layer extends from the first connection end of the heating element to a position close to the second connection end and exposes the main body close to the tip end to the insulating layer. The second electrode is provided on the surface of the insulating layer away from the heating element, and a portion of the second electrode extends outside the insulating layer and is provided in contact with the second connection end of the main body of the heating element close to the tip end that is exposed to the insulating layer.

16. The heater assembly of claim 1, wherein: The heating element of the conductive ceramic 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.

17. The heater assembly of claim 2, wherein: The mounting base includes a mounting body and a mounting hole provided on the mounting body. At least a portion of the heating element corresponding to the portion located in the second heating zone is inserted into the mounting hole to be fixed to the mounting base.

18. The heater assembly of claim 17, wherein: The mounting hole is a through hole, and the size and shape of the mounting hole match the shape and size of the portion of the heating element inserted into the mounting hole.

19. The heater assembly of claim 17, wherein: Two avoidance grooves are provided in the mounting hole, and the two avoidance grooves extend along the axial direction of the mounting hole and are used for allowing the electrode lead to pass through.

20. The heater assembly of claim 17, wherein: The mounting body is further provided with at least two clamping parts for fixing the mounting seat to the housing of the aerosol forming device.

21. The heater assembly of claim 17, wherein: The mounting body is further provided with at least one extension groove, which is communicated with the mounting hole to fix the portion of the heating element inserted into the mounting hole.

22. An aerosol-forming device, characterized in that It comprises: a shell and a heater assembly and a power supply assembly arranged in the shell; wherein the power supply assembly is connected to the heating element in the heater assembly for supplying power to the heating element, and the heater assembly is the heater assembly as described in any one of claims 1-21.

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