CN114246372A

CN114246372A - Heater unit and aerosol forming device

Info

Publication number: CN114246372A
Application number: CN202011012203.4A
Authority: CN
Inventors: 王守平; 张幸福; 方日明; 张琳; 孙利佳; 王郁
Original assignee: Shenzhen Smoore Technology Ltd
Current assignee: Shenzhen Smoore Technology Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2022-03-29
Also published as: WO2022062361A1; EP4218446A4; EP4218446A1; JP2023529880A; JP7514959B2; KR20230015463A

Abstract

The application provides a heater assembly and an aerosol-forming device. The heater assembly comprises a mounting seat and a heating assembly; the heating assembly comprises a heating body, and the heating body is provided with a first connecting end and a second connecting end opposite to the first connecting end; wherein the heating element is fixed with the mounting seat, and at least part of the heating element is used for inserting and heating the aerosol-forming substrate. The heating element in the heater assembly can be directly and independently inserted into the aerosol formation substrate, and the problem of failure caused by falling off from the substrate when the heating element is heated at high temperature is avoided, so that the reliability of the heating assembly is greatly improved; meanwhile, the problem that the resistor heating circuit is influenced by the mounting seat can be effectively avoided, an additional mounting substrate is not needed, and the production cost is effectively reduced.

Description

Heater unit and aerosol forming device

Technical Field

The invention relates to the technical field of heating non-combustion smoke generating equipment, in particular to a heater assembly and an aerosol forming device.

Background

Electronic cigarettes are used as cigarette substitutes, and are more and more concerned and favored by people due to the advantages of safe, convenient, healthy, environment-friendly and the like; for example, the electronic cigarette is not heated to burn, which is also called a heating non-combustion aerosol forming apparatus.

The heating mode of the existing heating non-combustible aerosol forming device is generally tubular peripheral heating or central embedded heating; tubular peripheral heating means that a heating tube is wrapped around the outside of an aerosol-forming substrate (e.g. tobacco) to heat the aerosol-forming substrate, and central insert heating is the insertion of a heating tube into an aerosol-forming substrate to heat the aerosol-forming substrate. Wherein, the heating component is widely applied due to the characteristics of simple manufacture, convenient use and the like; the existing heating component is mainly formed by adopting ceramic or metal subjected to insulation treatment as a substrate, then printing or coating a resistance heating circuit on the substrate, and fixing the resistance heating circuit on the substrate after high-temperature treatment; further, the heating element and the mounting seat constitute a heater element and are fixed by the mounting seat in the aerosol forming apparatus that heats the incombustible aerosol.

However, since the resistive heating line on the conventional heating element is a thin film that is later printed or plated on the substrate, the resistive heating line is easily detached from the substrate when heated at high temperature due to bending deformation of the substrate during use of the heating element inserted into the aerosol-forming substrate many times, and has poor stability, and also has poor heating uniformity of the aerosol-forming substrate due to the resistive heating line contacting only the aerosol-forming substrate on the side of the substrate where the resistive heating line is provided and not the aerosol-forming substrate on the back of the substrate during heating, and the mount may affect the resistive heating line when the mount is assembled with the heating element due to the resistive heating line being a thin film, such as deformation or disconnection of the resistive heating line.

Disclosure of Invention

The application provides a heater assembly and an aerosol forming device, and the heater assembly can solve the problems that a resistance heating circuit in the existing heater assembly is easy to fall off from a substrate when heated at high temperature, the stability is poor, and the heating uniformity of the resistance heating circuit to an aerosol forming substrate is poor in the heating process; meanwhile, the problem that the resistor heating circuit is influenced by the mounting seat possibly caused when the mounting seat is assembled with the heating assembly can be solved.

In order to solve the technical problem, the application adopts a technical scheme that: providing a heater assembly comprising a mount and a heat generating assembly; the heating assembly comprises a heating body, and the heating body is provided with a first connecting end and a second connecting end opposite to the first connecting end; wherein the heating element is fixed with the mounting seat, and at least part of the heating element is used for inserting and heating the aerosol-forming substrate.

In order to solve the technical problem, the application adopts a technical scheme that: there is provided an aerosol-forming device comprising: the heater comprises a shell, a heater assembly and a power supply assembly, wherein the heater assembly and the power supply assembly are arranged in the shell; wherein, the power supply module is connected with the heating element in the heater module and is used for supplying power to the heating element, and the heater module is the heater module.

Compared with the existing resistance heating circuit printed on the substrate in a silk-screen manner, the heating body can be directly and independently inserted into the aerosol forming substrate, the problem of failure caused by falling off from the substrate during high-temperature heating is avoided, and the reliability of the heating component is greatly improved; meanwhile, the heating element is fixed with the mounting seat by arranging the mounting seat, so that the heating component is fixed in the aerosol forming device by the mounting seat; the heating element can be independently inserted into the aerosol-forming substrate, namely, the heating element is of a self-supporting structure, and the mounting seat and the heating element are fixed, so that the problem that the mounting seat influences a resistance heating circuit can be effectively avoided; and an additional installation substrate is not needed, so that the production cost is effectively reduced.

Drawings

FIG. 1 is a schematic structural diagram of a heater assembly according to an embodiment of the present application;

FIG. 2 is a schematic view of a heat generating component inserted into an aerosol-forming substrate according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a mounting base according to an embodiment of the present application;

FIG. 4 is a front view of a heat generating body after a mounting base provided in an embodiment of the present application is assembled with the heat generating body;

fig. 5 is a schematic structural diagram of a heat generating component according to a first embodiment of the present application;

fig. 6 is a schematic structural diagram of a heat generating component according to a second embodiment of the present application;

FIG. 7 is a schematic view of a heat generating component inserted into an aerosol-forming substrate according to an embodiment of the present application;

FIG. 8 is a disassembled schematic view of the structure shown in FIG. 6;

fig. 9 is a schematic structural diagram of a heat generating component according to a third embodiment of the present application;

figure 10 is a schematic view of a heat generating component according to another embodiment of the present application inserted into an aerosol-forming substrate;

FIG. 11 is a disassembled schematic view of the structure shown in FIG. 9;

FIG. 12 is a schematic plan view of a heat generating component according to an embodiment of the present application;

FIG. 13 is a schematic plan view of a heat-generating component according to another embodiment of the present application;

FIG. 14 is a schematic plan view of a heat-generating component according to yet another embodiment of the present application;

fig. 15 is a schematic size diagram of a heat plate according to an embodiment of the present application;

FIG. 16 is a schematic size diagram of a heat generating rod according to an embodiment of the present application;

FIG. 17 is a schematic view showing a structure in which electrodes are provided on both opposite surfaces of a heat generating body according to an embodiment of the present application;

fig. 18 is a schematic structural view of a heating rod according to an embodiment of the present application;

FIG. 19 is an E-direction view of a heater module according to an embodiment of the present application;

FIG. 20 is a side view of a heat generating component provided in accordance with an embodiment of the present application;

FIG. 21 is a schematic view of a heating element provided in an embodiment of the present application, which is clamped in a mounting seat;

fig. 22 is a schematic position diagram of a first heat-generating region and a second heat-generating region on a heat-generating rod according to an embodiment of the present application;

FIG. 23 is a schematic view of a fastening sleeve according to an embodiment of the present application;

FIG. 24 is a schematic view of a fastening sleeve according to another embodiment of the present application;

FIG. 25 is a schematic view of a heating assembly including a stationary outer sleeve according to an embodiment of the present application;

FIG. 26 is a schematic view of the structure of FIG. 25 prior to assembly;

FIG. 27 is a schematic view of a heat-generating component including a mounting sleeve according to another embodiment of the present application;

FIG. 28 is a schematic view of the structure of FIG. 27 prior to assembly;

fig. 29 is a schematic structural view of a fixing sleeve provided on an outer surface of a first heat-generating region of a heat-generating body according to an embodiment of the present application;

fig. 30 is a schematic structural view of the mounting base and the heat generating plate provided in the embodiment of the present application after being assembled;

fig. 31 is a schematic structural view of the mounting base and the heating rod provided in the embodiment of the present application after being assembled;

FIG. 32 is a schematic structural view of a mounting base and a heat generating rod according to another embodiment of the present disclosure after being assembled;

fig. 33 is a schematic structural diagram of a heat generating component according to a fourth embodiment of the present application;

FIG. 34 is a disassembled view of the product shown in FIG. 33 according to an embodiment of the present disclosure;

FIG. 35 is a schematic view of a heat generating component inserted into an aerosol atomizing substrate as provided by an embodiment of the present application;

FIG. 36 is a side view of a heat-generating body provided in an embodiment of the present application;

fig. 37 is a schematic structural view of a heat generating component according to a fifth embodiment of the present application;

FIG. 38 is a disassembled view of the heating element shown in FIG. 37;

FIG. 39 is a schematic size diagram of the heating element shown in FIG. 37;

fig. 40 is a schematic structural view of a mounting base and a heat generating component according to an embodiment of the present application after being assembled;

fig. 41 is a schematic structural diagram of a mounting base and a heat generating component according to another embodiment of the present application after being assembled;

FIG. 42 is a disassembled view of the product corresponding to FIG. 41;

fig. 43 is a schematic structural view of a mounting base and a heat generating component according to yet another embodiment of the present application after being assembled;

FIG. 44 is a disassembled schematic view of the heating element of the product shown in FIG. 43 according to one embodiment of the present disclosure;

FIG. 45 is a disassembled schematic view of the heating element of the product shown in FIG. 43 according to another embodiment of the present application;

FIG. 46 is a sectional view showing heating elements provided in parallel according to an embodiment of the present application;

FIG. 47 is a sectional view showing heating elements arranged in parallel according to another embodiment of the present application;

fig. 48 is a schematic structural view of a heat generating component according to a sixth embodiment of the present application;

FIG. 49 is a disassembled schematic view of the structure shown in FIG. 48 according to one embodiment of the present application;

FIG. 50 is a schematic structural view of a heat-generating component in which a protective layer is applied to the entire surface of a heat-generating rod according to an embodiment of the present application;

fig. 51 is a schematic structural diagram of an aerosol-forming device according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a heater assembly according to an embodiment of the present disclosure; FIG. 2 is a schematic view of a heat generating component inserted into an aerosol-forming substrate according to an embodiment of the present application; in the present embodiment, a heater assembly 10 is provided, the heater assembly 10 specifically includes a mounting base 20 and a heat generating component 30; wherein the heat generating component 30 may be particularly useful for inserting and heating the aerosol-forming substrate 102; in particular, the aerosol-forming substrate 102 may be tobacco, as exemplified by the examples below; and a schematic view of the insertion of the heat generating component 30 into the aerosol-forming substrate 102 may be seen in figure 2.

Specifically, the heating element 30 includes a heating element for at least partially inserting and heating the aerosol-forming substrate 102, and compared with the existing resistance heating circuit silk-screened on the substrate, the heating element of the present application can be directly and independently inserted into the aerosol-forming substrate 102, and the problem of failure caused by falling off from the substrate when heated at high temperature does not occur, so that the reliability of the heating element 30 is greatly improved; specifically, the heating element is fixed to the mounting base 20, so that the heating element 30 is fixed in the housing of the aerosol-forming device through the mounting base 20; since the heating element itself can be independently inserted into the aerosol-forming substrate 102, that is, the heating element is substantially a self-supporting structure, compared with the existing scheme that the resistive heating circuit is a thin film, the mounting base 20 and the heating element provided by the present application are fixed, and the problem that the mounting base 20 affects the resistive heating circuit can be effectively avoided; and no additional installation substrate is needed to install the installation seat 20, thereby effectively reducing the production cost.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a mounting base according to an embodiment of the present application; the mounting seat 20 may specifically include a mounting main body 21 and a mounting hole 22 opened on the mounting main body 21; the heating element 30 is inserted into the mounting hole 22 to be fixed to the mounting base 20.

Specifically, the mounting hole 22 may be a through hole penetrating the upper and lower surfaces of the mounting body 21, and the size and shape of the mounting hole 22 are matched with the shape and size of the portion of the heating element in the heating element assembly 30 inserted into the mounting hole 22; specifically, referring to fig. 3, two avoiding grooves 221 may be further disposed on the side wall of the mounting hole 22, and the two avoiding grooves 221 extend along the axial direction of the mounting hole 22 and are oppositely disposed on the inner side wall of the mounting hole 22, so that the electrode lead connected to the power supply passes through and communicates with the heating element 30.

In an embodiment, referring to fig. 1, one side surface of the mounting body 21 may further be provided with an extension groove 23 communicating with the mounting hole 22, and the extension groove 23 may specifically extend in a radial direction of the mounting hole 22 and conform to a shape of a portion of the heat generating component 30 for insertion into the mounting seat 20, for example, if the portion of the heat generating component 30 for insertion into the mounting seat 20 is rectangular, the extension groove 23 is also rectangular, so that the portion of the heat generating component 30 inserted into the mounting seat 20 is reinforced by the extension groove 23 to prevent breakage thereof. In a specific embodiment, two extension grooves 23 are disposed on the mounting base 20, and the two extension grooves 23 can be perpendicularly crossed.

In an embodiment, referring to fig. 1, at least two clamping portions 241 are further disposed on the mounting main body 21, and the mounting base 20 can be fixed to the housing of the aerosol-forming device through the clamping portions 241.

In a specific embodiment, referring to fig. 4, fig. 4 is a front view of a mounting base provided in an embodiment of the present application after being assembled with a heating element; the heating element 30 has a first fixing structure 25 on a partial surface for inserting into the mounting base 20, a second fixing structure 26 is provided in a position corresponding to the first fixing structure 25 in the mounting hole 22 of the mounting base 20, and the mounting base 20 and the heating element 30 are fixed by the first fixing structure 25 and the second fixing structure 26, so as to improve the connection stability of the two. The first fastening structure 25 may be a plurality of protrusions (or recesses), and the second fastening structure 26 may be a recess (or protrusion) matching with the first fastening structure 25.

Specifically, the material of the mounting seat 20 may be an organic or inorganic material having a melting point higher than 160 degrees, for example, PEEK material; specifically, the mounting base 20 may be bonded to the heat generating component 30 by an adhesive, the adhesive may be a high temperature resistant glue, or the heat generating component 30 may be placed in a forming mold, and the mounting base 20 connected to the outside of the heat generating component 30 is formed by a forming process.

Referring to fig. 5 to 11, fig. 5 is a schematic structural diagram of a heating element according to a first embodiment of the present application; fig. 6 is a schematic structural diagram of a heat generating component according to a second embodiment of the present application; FIG. 7 is a schematic view of a heat generating component inserted into an aerosol-forming substrate according to an embodiment of the present application; FIG. 8 is a disassembled schematic view of the structure shown in FIG. 6; fig. 9 is a schematic structural diagram of a heat generating component according to a third embodiment of the present application; figure 10 is a schematic view of a heat generating component according to another embodiment of the present application inserted into an aerosol-forming substrate; fig. 11 is a disassembled view of the structure shown in fig. 9. In an embodiment, the heat generating assembly 30 in particular comprises a heat generating body 11, the heat generating body 11 in particular comprises a first extension 111 and a second extension 112 connected to the first extension 111, and in a particular embodiment, both the first extension 111 and the second extension 112 are for being at least partially inserted into the aerosol-forming substrate 102 and generating heat when energized to heat the aerosol-forming substrate 102; it will be appreciated that the first and

second extensions

111, 112 may be inserted into the aerosol-forming substrate 102 independently and directly, whereas the existing silk-screened or coated resistive heating circuits on the substrate, which need to be inserted into the aerosol-forming substrate 102 via the substrate, may not be inserted into the aerosol-forming device directly, and the first and

second extensions

111, 112 provided by the present application may not be detached from the substrate when heated at high temperature, which may cause failure, and thus greatly improve the stability of the heat generating component 30.

In particular, the first and

second extensions

111, 112 are in contact with the aerosol-forming substrate 102 on opposite surfaces of the portion for insertion of the aerosol-forming substrate 102; it will be appreciated that since the heat generating body 11 of the present application is directly inserted into the aerosol-forming substrate 102 without the aid of a base plate or other substrate, at least two opposing surfaces of the first and

second extensions

111, 112 of the heat generating body 11 may be in direct contact with the aerosol-forming substrate 102, thereby greatly improving the heat utilization and heating efficiency.

In another embodiment, referring to fig. 6 and 9, the heat generating component 30 further comprises a third extension 113 for fully inserting and heating the aerosol-forming substrate 102; specifically, in this embodiment, the first extension portion 111 and the second extension portion 112 are arranged in parallel and spaced, and one end of the first extension portion 111 close to the second extension portion 112 is connected through the third extension portion 113; the end of the first extension 111 and the end of the second extension 112 that are close to each other are specifically the end that is first in contact with the aerosol-forming substrate 102 and is inserted (i.e., the second connection end of the heating element 11); it is understood that the first extension 111, the second extension 112 and the third extension 113 are formed in a substantially U-shaped configuration; in a specific embodiment, the first extension portion 111, the second extension portion 112, and the third extension portion 113 are made of conductive ceramic and are integrally formed and sintered; specifically, the base material plate forming the heat-generating body 11 may be cut by laser cutting to form the slit groove 114, thereby obtaining the heat-generating body 11 having the first extending portion 111, the second extending portion 112, and the third extending portion 113. It is to be understood that the heating element 11 may be directly formed by sintering.

Specifically, the shapes of the first extension portion 111, the second extension portion 112, and the third extension portion 113 are not limited, and may be designed according to actual needs. Specifically, the first extension portion 111 and the second extension portion 112 are elongated, and the third extension portion 113 gradually decreases in width from the end close to the first extension portion 111 to the end far from the first extension portion 111, thereby forming a pointed end to facilitate insertion of the heating body 11 into the aerosol-forming substrate 102. In the present embodiment, the first extension portion 111 and the second extension portion 112 are rectangular parallelepiped, and the third extension portion 113 is substantially V-shaped. In other embodiments, the third extending portion 113 may also be U-shaped or isosceles trapezoid, or another shape with a width gradually decreasing from an end close to the first extending portion 111 and the second extending portion 112 to a direction away from the first extending portion 111 and the second extending portion 112. In the present embodiment, the cutting groove 114 is a rectangle with a uniform width or a convex guiding arc is formed at one end of the rectangle near the third extending portion 113; specifically, the slot 114 is an axisymmetric structure, the longitudinal direction of which is parallel to the direction of the central axis thereof, the first extension 111 and the second extension 112 are arranged in parallel at intervals, and the longitudinal direction is parallel to the direction of the central axis of the slot 114, and the width direction of the first extension 111, the second extension 112 and the third extension 113 is perpendicular to the direction of the central axis of the slot 114. The heating element 11 has a structure symmetrical with respect to the central axis of the slot 114, that is, the first extension 111, the second extension 112 and the third extension 113 are all symmetrical with respect to the central axis of the slot 114, so that the temperatures of the corresponding positions in the width direction of the first extension 111, the second extension 112 and the third extension 113 on both sides of the slot 114 are consistent, and the taste of the smoke is better.

In other embodiments, referring to fig. 12, fig. 12 is a schematic plan view of a heat generating component provided in accordance with an embodiment of the present application; the first and second extending

portions

111 and 112 are also arranged in parallel, but the width of the cutting groove 114 may be a centrosymmetric structure gradually decreasing from the end far from the third extending portion 113 to the end near the third extending portion 113, and the outer sides of the corresponding first and second extending

portions

111 and 112 are parallel, and the width gradually increases from the end far from the third extending portion 113 (i.e., the first connecting end of the heating element 11) to the end of the third extending portion 113 (i.e., the second connecting end of the heating element 11). This slightly increases the resistance at the end away from the third extension 113, so as to balance the resistance between the third extension 113 and the resistor (the third extension 113 has a larger resistance), and thus the overall heat generation is more uniform.

In other embodiments, referring to fig. 13, fig. 13 is a schematic plan view of a heat-generating component provided in accordance with another embodiment of the present application; the cutting groove 114 may be a central symmetrical structure gradually increasing from one end far away from the third extending portion 113 to one end of the third extending portion 113, the outer sides of the corresponding first extending portion 111 and second extending portion 112 are parallel, and the widths of the first extending portion 111 and second extending portion 112 gradually decrease from one end far away from the third extending portion 113 to one end of the third extending portion 113, so that the resistance near the upper end of the heating element 11 is relatively large, and the design requirement of the heating mode that the high temperature of the heating element 11 is relatively concentrated at the middle and upper sections is satisfied.

In other embodiments, referring to fig. 14, fig. 14 is a schematic plan view of a heat-generating component provided in accordance with yet another embodiment of the present application; the first extension portion 111 and the second extension portion 112 are rectangular, but are not parallel to each other, but are disposed at an angle, for example, an angle of 3-10 degrees, in this case, the width of the cutting groove 114 may be a central symmetry structure gradually decreasing from an end far from the third extension portion 113 to an end of the third extension portion 113.

In a specific embodiment, referring to fig. 15, fig. 15 is a schematic size diagram of a heat plate provided in an embodiment of the present application; the heat-generating body 11 may have a plate shape as shown in fig. 15, and may be a heat-generating plate made of conductive ceramics, in this embodiment, the distance between the first extending portion 111 and the second extending portion 112 is less than one tenth of the width of the entire heat-generating body 11, and the distance L1 between the first extending portion 111 and the second extending portion 112 may be 0.25 to 0.35 mm, so as to avoid the short-circuit problem while effectively ensuring the strength of the heat-generating body 11.

Specifically, the specific resistance of the ceramic used for the heat generating plate may be 5 × 10^-5Ohm, the design power can be 2 watts, and the resistance can be 0.71 ohm; specifically, the heating plate may 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, and the plate thickness H1 may be 0.5 mm, and the total length L2 may be 18 mm; the length L3 of the first extension 111 and the second extension 112 may be 16 mm, and it is understood that the single effective length of the heat-generating body 11 may be 32.0 mm; the length of the third extension part 113 of the heating element 11 may be 2 mm; specifically, the width W1 of the heat generating plate may be 4.0 mm; specifically, the error range of each size of the heating plate is not more than 0.05 mm. Both opposite surfaces of the plate-shaped heat-generating body 11 may be used to contact and heat the aerosol-forming substrate 102.

In another embodiment, referring to fig. 11 and 16, fig. 16 is a schematic size diagram of a heating rod provided in an embodiment of the present application; the heat generating body 11 may also have a rod shape, which may be a heat generating rod made of conductive ceramics, in this embodiment, the distance L4 between the first extension part 111 and the second extension part 112 is less than one third of the diameter phi of the entire heat generating rod, and the distance L4 may be 0.8-1 mm; specifically, in this embodiment, the support ceramic 14 is further provided between the first extension 111 and the second extension 112 to enhance the strength of the heating element 11, so that the heating element 11 can be inserted into the aerosol-forming substrate 102 more smoothly in the process of inserting the heating element 11 into the aerosol-forming substrate 102, and the probability of bending of the heating element 11 due to stress is effectively reduced. Specifically, the support ceramic 14 may be bonded to the first and

second extension portions

111 and 112 through the glass ceramic 15 to improve a bonding force therebetween. In the present embodiment, the support ceramic 14 may be made of a ceramic material such as zirconia, zirconia toughened alumina, or the like.

Specifically, the ceramic material used for the heating rod may have a resistivity of 3 × 10^-5Ohm, design power may be 3-4W, e.g., 3.3 watts in particular, and resistance may be 0.3-1 ohm, e.g., 0.5 ohm; specifically, the heating rod may be a single serial connection type, that is, the first extension portion 111, the third extension portion 113, and the second extension portion 112 are sequentially connected in series, and the diameter Φ thereof may be 2 to 5 mm, specifically 3 mm, and the length L5 may be 18 to 22 mm, specifically 19.7 mm; the length L6 of the first extension part 111 and the second extension part 112 may be 12 to 18 mm, specifically 16 mm, and it is understood that the single effective length of the heating element 11 may be 30 to 35 mm, specifically 32.0 mm; the length of the third extension 113 may be 2-5 mm, specifically 3.7 mm; specifically, the length L7 of the support ceramic 14 disposed between the first extension portion 111 and the second extension portion 112 may be 12 to 18 mm, specifically 17 mm, the width W2 may be the same as the diameter Φ of the heat generating rod, specifically 2 to 5 mm, specifically 3 mm, the thickness H2 may be slightly smaller than the distance between the first extension portion 111 and the second extension portion 112, specifically, the thickness H2 may be 0.8 to 1.2 mm, for example, 0.9 mm, so as to facilitate the disposing of the glass ceramic 15.

In a specific embodiment, referring to fig. 6 to 11, the heating assembly 30 further includes two electrodes 12, one electrode 12 of the two electrodes 12 is disposed on the first extension 111, and the other electrode 12 is disposed on the second extension 112; in a specific use process, the two electrodes 12 are electrically connected with the power supply component through electrode leads respectively, so that the heating body 11 is electrically connected with the power supply component. Specifically, referring to fig. 6 and 8, the two electrodes 12 are respectively disposed on the same side of the first extension portion 111 and the second extension portion 112 away from one end of the third extension portion 113. Two electrodes 12 coat the surface formation in the conductive ceramic lower extreme for conductive silver thick liquid, concretely, two electrodes 12 are roughly half cylinder and extend to the internal face that grooving 114 corresponds respectively at the both ends of the cross section of heat-generating body 11, so increase as far as possible with conductive ceramic's area of contact in order to reduce contact resistance, and have the convenient welding electrode lead wire of bigger area, for the very little resistance heating circuit of size that prior art silk screen printing or coating film formed, the contact resistance of electrode and heating circuit is big, heat-generating body 11 of this application can greatly increased with electrode 12's area of contact, thereby reduce contact resistance, the stability that makes heat-generating body 11 use is better.

In a specific embodiment, refer to fig. 17 and fig. 18, wherein fig. 17 is a schematic structural view of an electrode provided in an embodiment of the present application disposed on two opposite surfaces of a heat generating body; fig. 18 is a schematic structural view of a heating rod according to an embodiment of the present application; when the heat generating body 11 is a heat generating plate, the electrodes 12 may be provided on the two opposite surfaces of the first extending portion 111 and the second extending portion 112, that is, one electrode 12 may be provided on both the first surface C of the end portion of the first extending portion 111 and the second surface D provided opposite to the first surface C, and the other electrode 12 may be provided on both the first surface C of the end portion of the second extending portion 112 and the second surface D provided opposite to the first surface C, and when connecting the two electrode leads, one of the Y-shaped electrode leads may be connected to the two electrodes 12 on the two surfaces on the first extending portion 111, and the other Y-shaped electrode lead may be connected to the electrode 12 on the second extending portion 112; when the heating element 11 is a heating rod, referring to fig. 18, the two electrodes 12 can be extended to the inner wall surfaces corresponding to the slits 114, respectively; specifically, the first extension 111 of the heat generating rod has a first inner surface 111a and a first outer surface 111b, the second extension 112 has a second inner surface 112a and a second outer surface 112b, the electrode 12 on the first extension 111 extends from the first outer surface 111a to the first inner surface 111b, and the electrode 12 on the second extension 112 extends from the second outer surface 112a to the second inner surface 112 b. By providing the electrodes 12 on both surfaces of the heating body 11, not only welding is facilitated, but also resistance is small, heat generated when power is turned on is small, and damage can be effectively prevented. And electrify at the same time at two surfaces of the conductive ceramic, form the same electric potential, help to make the electric field of conductive component between two surfaces uniform, the heating effect is better.

In the present embodiment, the notch 114 penetrates the first surface C and the second surface D. Further, referring to fig. 19, fig. 19 is an E-direction view of a heat generating component according to an embodiment of the present application; specifically, in the heat-generating body 11, in the thickness direction, the edges of the first extending portion 111, the second extending portion 112, and the third extending 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, and the guide surfaces 118 may be specifically guide slopes (see fig. 19) or arcs, so that not only is insertion into the aerosol-forming substrate 102 facilitated, but also the resistance can be reduced, thereby better protecting the heat-generating body 11.

In a specific embodiment, the electrodes 12 may be formed at both end portions of the first and

second extension parts

111 and 112 in a coating manner to improve the coupling force between the electrodes 12 and the heating body 11, thereby improving the connection stability between the electrode lead connected to the electrodes 12 and the heating body 11; it can be understood that the ceramic has a microporous structure, and the microporous structure of the ceramic can make the bonding force between the formed electrode 12 and the heating body 11 stronger even if the coating thickness is larger, thereby greatly improving the bonding force between the electrode 12 and the heating body 11. Specifically, the coating material may be silver paste. It will be appreciated that the electrode 12 may also be formed by depositing a metal film, for example gold, platinum, copper or the like in a quantity greater than 1 x 10^-6An ohmic metallic material.

In a specific embodiment, referring to fig. 20, fig. 20 is a side view of a heat generating component provided in an embodiment of the present application; the surface of the heating element 11 may be further coated with a protective layer 115, the protective layer 115 covering the two electrodes 12 to prevent soot formed when the aerosol-forming substrate 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.

Specifically, referring to fig. 21 and 22, fig. 21 is a schematic view illustrating a heating element provided in an embodiment of the present application being clamped in a mounting seat; fig. 22 is a schematic position diagram of a first heat-generating region and a second heat-generating region on a heat-generating rod according to an embodiment of the present application; the heating body 11 comprises a first heating area A and a second heating area B connected with the first heating area A, wherein the first heating area A is a main atomization area inserted into the aerosol-forming substrate 102 for heating, the atomization temperature on the first heating area A is concentrated at 280-350 ℃, and the area of the main atomization area is more than 75%, the second heating area B is a main matching section of the heating body 11, the temperature is below 150 ℃, namely, the temperature of the first heating area A is higher than that of the second heating area B, and the part of the heating body 11 located in the second heating area B is fixed with the mounting seat 20 so as to prevent the mounting seat 20 from being damaged due to overhigh temperature of the second heating area B (for example, PEEK is plastic and is likely to be melted) or the mounting seat 20 (for example, a ceramic fixing seat) transmits high temperature to other parts of the aerosol-forming device when the temperature of the second heating area B is overhigh, so that the outer shell temperature is too hot to hands or an internal circuit board is damaged, and the temperature conduction can reduce the heat utilization of the first heat-generating area A; in the specific embodiment, the portion of the heat generating body 11 located in the second heat generating region B is inserted into the mounting hole 22 of the mounting seat 20 to be fixed with the mounting seat 20; specifically, all positions of the heating element 11 corresponding to the part of the second heating area B are inserted into the mounting holes 22 of the mounting base 20, and at this time, it can be understood that the axial length of the heating element 11 at the position of the second heating area B is less than or equal to the axial length of the mounting holes 22; or the heating element 11 is inserted into the mounting hole 22 of the mounting base 20 at the position of the second heating area B, and at this time, the axial length of the heating element 11 at the position of the second heating area B is greater than the axial length of the mounting hole 22 or less than the axial length of the mounting hole 22; the following embodiments are directed to the case where the heat generating component 30 is inserted into the mounting hole 22, similarly.

Specifically, the length of the first heat generation region a of the heat generation rod may be 14.5 mm, and the length of the second heat generation region B may be 5.2 mm.

In a particular embodiment, only a majority of the first and second heat generating zones a, B of the first and

second extensions

111, 112 are inserted into the aerosol-forming substrate 102, while a minority of the first and second heat generating zones a, B stay outside the aerosol-forming substrate 102; or the first heat generating zone a is fully inserted into the aerosol-forming substrate 102 and the second heat generating zone B remains outside the aerosol-forming substrate 102; or the first heat generating zone a is fully inserted into the aerosol-forming substrate 102 and a small portion of the second heat generating zone B is also inserted into the aerosol-forming substrate 102, only a large portion of the second heat generating zone B remaining outside the aerosol-forming substrate 102.

In the embodiment, two electrodes 12 are specifically disposed in the second heat generation area B of the heat generation body 11 to lower the atomization temperature of the ceramic heat generation body 11 located in the second heat generation area B. In this embodiment, the ratio of the heat generation temperature of the first heat generation area a to the heat generation temperature of the second heat generation area B of the heat generation body 11 is greater than 2.

In a specific embodiment, the resistivity of the material of the part of the heating element 11 positioned in the second heating area B is smaller than that of the material of the part of the heating element 11 positioned in the first heating area a, so that the temperature of the first heating area a of the heating element 11 is higher than that of the second heating area B; meanwhile, materials with different resistivities are arranged in different heating areas, so that the temperatures of the different heating areas are regulated and controlled through resistivity differences; specifically, the main body components of the ceramic materials of the part of the heating element 11 located in the first heating area a and the part of the heating element 11 located in the second heating area B are substantially the same and are integrally molded, but the proportion of the ceramic materials of the part of the heating element 11 located in the first heating area a and the part of the heating element 11 located in the second heating area B is different or other components are different, so that the resistivity of the part of the heating element 11 located in the first heating area a is different from that of the part of the heating element 11 located in the second heating area B. Compared with the prior art, the scheme that the first heating area A and the second heating area B are made of different conductive materials, such as an aluminum film and a gold film, and the two different conductive materials are spliced can effectively avoid the problem that the conductors of the first heating area A and the second heating area B of the heating body 11 are broken.

In another specific embodiment, referring to fig. 21, the width or/and thickness of the portion of the heat generating body 11 where the first and

second extensions

111 and 112 are located in the second heat generating region B is larger than the width or/and thickness of the portion of the heat generating body 11 where the first and

second extensions

111 and 112 are located in the first heat generating region a, so that the temperature of the first heat generating region a of the heat generating body 11 is higher than the temperature of the second heat generating region B; in this embodiment, in order to prevent the mounting base 20 from being displaced relative to the heating element 11 during insertion and extraction, the connection stability between the electrode lead and the electrode 12 is affected; the widened portion of the second heat generation region B of the heat generating body 11 may be caught in the mounting seat 20 to limit the mounting seat 20 by the widened portion of the heat generating body 11, and it can be understood that, in this embodiment, the position of the portion corresponding to the first heat generation region a of the heat generating body 11 is also inserted in the mounting seat 20.

Of course, in other embodiments, the temperature of the first heat-generating area a of the heat-generating body 11 may be made higher than the temperature of the second heat-generating area B by controlling the material; for example, the lower half portion of the heating element 11 is added with a conductive component, so that the lower half portion has smaller resistance and lower temperature during heating, and therefore, in this embodiment, the width or/and thickness of the portion of the first extension portion 111 and the second extension portion 112 located in the second heating area B can be the same as the width or/and thickness of the portion of the first extension portion 111 and the second extension portion 112 located in the first heating area a, thereby facilitating processing and avoiding the problem of tobacco or tobacco tar sticking by the widened portion.

In a particular use, the heating element 30 is inserted into the aerosol-forming substrate 102 and, on energisation, the heating element 30 begins to operate, heating the aerosol-forming substrate 102 and generating smoke.

In the heating element 30 provided in this embodiment, the heating element 30 includes the heating element 11, the heating element 11 includes the first extending portion 111 disposed at an interval and the second extending portion 112 disposed at an interval with the first extending portion 111, and the first extending portion 111 and the second extending portion 112 are both used for being at least partially inserted into the aerosol-forming substrate 102 and generating heat when energized to heat the aerosol-forming substrate 102, compared with the existing resistive heating circuit with silk screen printing or coating on the substrate, the heating element 11 of the present application can be directly and independently inserted into the aerosol-forming substrate 102, and the problem of failure caused by falling off from the substrate when heated at high temperature does not occur, so that the stability of the heating element 30 is greatly improved; meanwhile, because the heating element 11 is a self-supporting structure, without matching a substrate, two opposite surfaces of the heating element 11 can be in direct contact with the aerosol-forming substrate 102, thereby effectively improving the heating uniformity of the heating component 30 to the aerosol-forming substrate 102.

In this embodiment, refer to fig. 23 to 28, wherein fig. 23 is a schematic structural view of a fixing sheath provided in an embodiment of the present application; FIG. 24 is a schematic view of a fastening sleeve according to another embodiment of the present application; FIG. 25 is a schematic view of a heating assembly including a stationary outer sleeve according to an embodiment of the present application; FIG. 26 is a schematic view of the structure of FIG. 25 prior to assembly; FIG. 27 is a schematic view of a heat-generating component including a mounting sleeve according to another embodiment of the present application; fig. 28 is a schematic view of the structure of fig. 27 prior to assembly.

That is, the heating element 30 further includes a fixing sheath 13, and the fixing sheath 13 is sleeved on the outer side of the heating element 11 to enhance the fatigue resistance of the heating element 11, thereby increasing the service life of the heating element 30. Specifically, the material of the fixing sheath 13 may be metal, such as steel; the wall thickness of the fixing sleeve 13 may be 0.1-0.5 mm.

In a specific embodiment, the longitudinal length of the fixing sheath 13 is the same as the longitudinal length of the heating element 11, that is, the fixing sheath 13 is sleeved on the outer surface of the whole heating element 11, and at this time, the mounting seat 20 is fixedly mounted on the fixing sheath 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 fixing sheath 13 can be seen in fig. 23, the structure of the product after the fixing sheath 13 and the plate-shaped heating element 11 are sheathed can be seen in fig. 25, and the disassembled schematic view can be seen in fig. 26. Specifically, the fixing cover 13 is also plate-shaped, and has an open end and a closed end. The closed end of the fixing sheath 13 forms a tip, opposite sidewalls of the open end have notches 131, and two electrodes 12 may be respectively disposed on side surfaces of the first and

second extensions

111 and 112 away from the incision groove 114 and exposed through the notches 131 so as to be connected to the electrode leads 23.

When the heating element 11 is a heating rod, the specific structure of the fixing sheath 13 can be seen in FIG. 24, the structure of the product after the fixing sheath 13 and the rod-shaped heating element 11 are sheathed can be seen in FIG. 27, and the disassembled schematic view thereof can be seen in FIG. 28. Specifically, the fixing sleeve 13 is also rod-shaped, and has an open end and a closed end. The closed end of the fixing sheath 13 forms a tip, opposite sidewalls of the open end have notches 131, and two electrodes 12 may be respectively disposed on side surfaces of the first and

second extensions

Specifically, referring to fig. 28, an insulating medium layer 24 is disposed between the heating element 11 and the fixing sheath 13 to enhance the bonding force between the fixing sheath 13 and the heating element 11 and avoid short circuit; specifically, the insulating medium layer 24 may be selectively coated on the outer surface of the heating element 11 or the inner surface of the fixing sheath 13 according to the process, and the coating thickness may be specifically 0.05 to 0.1 mm. In one embodiment, the insulating medium layer 24 is coated on the surface of the heating element 11 and exposes the slit 114 and the electrode 12.

Specifically, the length of the fixing sheath 13 is the same as or smaller than the length of the heating element 11. It will be appreciated that, since the fixing sleeve 13 has a pointed end, the third extension 113 may also have no pointed end, facilitating the machining.

In another specific embodiment, referring to fig. 29, fig. 29 is a schematic structural view of a fixing sleeve provided in an embodiment of the present application, the fixing sleeve being sleeved on an outer surface of a first heat-generating region of a heat-generating body; the longitudinal length of the fixing sheath 13 is smaller than that of the heating body 11. Specifically, in one embodiment, the fixing sheath 13 is only fitted over the outer surface of the portion of the heating element 11 corresponding to the whole or part of the first heating zone a (see fig. 29); in another embodiment, the fixing outer sleeve 13 is sleeved on the outer surface of the part corresponding to the whole first heat generating area a and the outer surface of the part corresponding to the second heat generating area B of the heat generating body 11; at this time, the mounting seat 20 is fixed to the portion of the heating element 11 exposed from the fixing sheath 13, and the mounting seat 20 abuts against one end of the fixing sheath 13 close to the mounting seat 20; in this manner, both surfaces of the heat-generating body 11 can be directly fixed to the mount 20, and the portions of the first extension 111 and the second extension 112 inserted into the aerosol-forming substrate 102 are reinforced without being deformed or broken.

Referring to fig. 30 to 32, fig. 30 is a schematic structural view of the mounting base and the heat generating plate provided in the embodiment of the present application after being assembled; fig. 31 is a schematic structural view of the mounting base and the heating rod provided in the embodiment of the present application after being assembled; FIG. 32 is a schematic structural view of a mounting base and a heat generating rod according to another embodiment of the present disclosure after being assembled; in the present embodiment, when the heat-generating body 11 is a heat-generating plate, the structure of the product after the assembly of the mount 20 and the heat-generating body 11 can be seen in FIG. 30, and when the heat-generating body 11 is a heat-generating rod, and the fixing sheath 13 is not provided outside the heat-generating body 11, the structure of the product after the assembly of the mount 20 and the heat-generating body 11 can be seen in FIG. 31; when the fixing cover 13 is provided outside the heating element 11, the mounting seat 20 can be selectively mounted on the heating element 11 or the fixing cover 13 according to the actual situation. For example, when the length of the fixing sheath 13 is the same as the length of the heating element 11, the mounting seat 20 may be fitted over the fixing sheath 13, and specifically, referring to fig. 32, when the length of the fixing sheath 13 is smaller than the length of the heating element 11, the end of the heating element 11 coated with the electrode 12 is exposed outside the fixing sheath 13, the mounting seat 20 is fixed at the end of the heating element 11 exposed outside the fixing sheath 13, that is, at the second heating region B of the heating element 11, and the mounting seat 20 abuts against the end of the fixing sheath 13 close to the mounting seat 20. Preferably, when the end of the heating body 11 coated with the electrode 12 is exposed outside the fixing sheath 13, the mount 20 is fixed to the open end of the fixing sheath 13, that is, the open end of the fixing sheath 13 is inserted into the mount 20, and the end of the heating body 11 coated with the electrode 12 passes through the mount 20.

Referring to fig. 33 to 35, fig. 33 is a schematic structural diagram of a heating element according to a fourth embodiment of the present application; FIG. 34 is a disassembled view of the product shown in FIG. 33 according to an embodiment of the present disclosure; FIG. 35 is a schematic view of a heat generating component inserted into an aerosol atomizing substrate as provided by an embodiment of the present application; in the present embodiment, a heat generating component 30 is provided, and the heat generating component 30 includes a substrate 31 and a heat generating body 32 embedded in the substrate 31. In particular, in this embodiment, the structure in which the heat generating component 30 is inserted into the aerosol-forming substrate 102 may be seen in figure 35.

The substrate 31 may be a rectangular substrate 31 having a first end M and a second end N opposite to the first end M; during insertion of the heating element 30 into the aerosol-forming substrate 102, the second end N of the base plate 31 is inserted into the aerosol-forming substrate 102 first, and therefore, to facilitate the insertion of the heating element 30 into the aerosol-forming substrate 102, the second end N of the base plate 31 may be specifically configured as a tip, i.e., in a triangular structure, and an included angle formed by two adjacent sides of the tip may be specifically 45 degrees to 90 degrees, e.g., 60 degrees.

Specifically, the substrate 31 may be made of insulating ceramic, the thermal conductivity of the substrate 31 made of insulating ceramic may be 4-18W/(m.k), the bending strength may be more than 600MPa, the thermal stability may exceed 450 degrees, and the fire resistance may be higher than 1450 degrees. Of course, in other embodiments, the substrate 31 may also be a metal substrate provided with an insulating coating to improve the strength of the heating element 30, prevent the heating element 30 from bending or breaking, and diffuse the heat generated by the heating element 32 to the tobacco contacting the substrate 31, thereby improving the uniformity of heating of the tobacco in the aerosol-forming substrate 102. The material of the substrate 31 can also be a novel composite zirconia material, and the novel composite zirconia substrate 31 can keep warm and transfer heat to the heat generated by the heating element 32 to provide the energy utilization rate of the heating component 30. The ceramic substrate 31 may also be ZTA material (zirconia toughened alumina ceramic) or MTA (mullite and alumina composite).

In an embodiment, the substrate 31 is provided with a receiving groove 311 along the length direction thereof, and at least a portion of the heating element 32 is received in the receiving groove 311, so that when the heating element 30 is inserted into the aerosol-forming substrate 102, the substrate 31 is stressed to avoid the problem of bending of the heating element 32 due to direct stress.

Specifically, the substrate 31 has a first surface C₁And with the first surface C₁Oppositely arranged second surface D₁The receiving cavity 311 may specifically penetrate through the first surface C₁And a second surface D₁The heating body 32 is specifically accommodated in the through groove, and the upper and lower surfaces of the heating body 32 and the first surface C of the substrate 31₁And a second surface D₁Leveling; by configuring the accommodating groove 311 as a through groove structure, the heating elements 32 accommodated in the accommodating groove 311 can be respectively arranged from the first surface C of the substrate 31₁And a second surface D₁Is exposed, and both surfaces of the heating element 32 are allowed to contact air after the heating element 32 is inserted into the aerosol-forming substrate 102The tobacco in the sol-forming substrate 102 is in direct contact with each other, so that the energy utilization rate is high, the heating is uniform, and the boundary of the preset temperature field is clear.

In other embodiments, the upper and lower surfaces of the heating element 32 may be slightly protruded from the first surface C of the substrate 31 according to the actual need of the temperature field distribution during heating₁And a second surface D₁Or respectively slightly lower than the first surface C of the substrate 31₁And a second surface D₁Thus, the upper and lower surfaces of the heating element 32 are slightly protruded from the first surface C of the substrate 31₁And a second surface C₂During the process, the higher temperature of the heating element 32 can be concentrated on the upper surface and the lower surface of the heating element 32, and the upper surface and the lower surface of the heating element are baked at higher temperature to be contacted with tobacco, so that the smoke can meet stronger requirements; and slightly lower than the first surface C of the substrate 31 at the upper and lower surfaces of the heat-generating body 32₁And a second surface C₂In the process, due to the blocking effect of the substrate 31, the contact between the upper surface and the lower surface of the heating body 32 and tobacco is loose, the baking temperature of the heating body 32 to the tobacco can be slightly reduced, and the requirement of soft smoke is met.

Specifically, in one embodiment, the heating element 32 specifically includes a first extension 321 and a second extension 322 connected to the first extension 321; in another embodiment, the heat-generating body 32 further comprises a third extension 323 for fully inserting and heating the aerosol-forming substrate 102; specifically, in this embodiment, the first extension 321 and the second extension 322 are arranged in parallel and spaced, and the ends of the first extension 321 and the second extension 322 that are close to each other are connected by the third extension 323; specifically, the first extension portion 321, the second extension portion 322 and the third extension portion 323 define the cutting 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 assembly 30 provided in the first embodiment, and are not described herein again.

Referring to fig. 34, the 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; in one embodiment, the end of the receiving groove 311 away from the second end N of the substrate 31 is an open end, and the end of the receiving groove 311 close to the second end N of the substrate 31 is a closed end, so that the problem of stress release when the heating element 32 and the substrate 31 are co-sintered can be prevented by setting the end of the receiving groove 311 as the open end, for example, when the opening is not provided, the substrate 31 may be pressed by a slight stress of the heating element 32, and when the first end M is an open end, the conductive ceramic connection of the electrode lead (not shown) is facilitated. In this embodiment, the accommodating groove 311 is a U-shaped structure; in this embodiment, the third extension 323 of the heating element 32 is disposed at the position of the containing groove 311 near the closed end, and the base plate 31 has a tip near the closed end, so as to facilitate insertion of the aerosol-forming substrate 102.

Specifically, referring to fig. 33 and 34, the heating element 32 may be a plate structure, which may be a heating plate made of conductive ceramic, and the resistivity of the ceramic used for the heating plate may be 5 × 10^-5Ohm, the design power can be 2 watts, and the resistance can be 0.71 ohm; specifically, the heating plate may be a single series type, that is, the first extension portion 321, the third extension portion 323, and the second extension portion 322 are sequentially connected in series (the middle slot).

In one embodiment, referring to fig. 34, an adhesive layer 34 is further provided at the abutment of the substrate 31 and the heat-generating body 32 to enhance the adhesive force between the heat-generating body 32 and the substrate 31; specifically, the adhesive layer 34 may be made of a matching inorganic glass ceramic, and is bonded to the substrate 31 and the heating element 32 by co-firing. Specifically, the thickness of the adhesive layer 34 may be 0.05-0.1 mm; of course, in other embodiments, a seamless splicing type may be directly used between the substrate 31 and the heating element 32.

In the specific implementation process, the periphery of the sintered heating element 32 is coated with the bonding glass ceramics, then the heating element 32 is placed in the accommodating groove 311 of the sintered substrate 31, and then the substrate 31 and the heating element 32 are sintered for the second time together, so that the heating element 32 is embedded in the accommodating groove 311 of the substrate 31.

Referring to fig. 33 and 34, in a particular embodiment, the heating element 30 further includes a first electrode 33a and a second electrode 33 b; one of the first electrode 33a and the second electrode 33b is provided on the first extension 321, and the other electrode is provided on the second extension 322, and during use, the first electrode 33a and the second electrode 33b are electrically connected to the power module through electrode leads, respectively, so that the heating element 32 is electrically connected to the power module. Specifically, referring to fig. 33, the first electrode 33a and the second electrode 33b are respectively disposed on the same side surface of one end of the first extension portion 321 and the second extension portion 322 away from the third extension portion 323. In an 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 the power is supplied, the metal substrate 31 can generate heat, thereby improving the heating efficiency. Specifically, an end of the first extension portion 321 away from the third extension portion 323 is a first connection end (or a second connection end), and an end of the second extension portion 322 away from the third extension portion 323 is a second connection end (or a first connection end).

In a particular embodiment, referring to FIG. 34, the first surface C of one of the first extension 321 and the second extension 322₂And with the first surface C₂Oppositely arranged second surface D₂A first electrode 33a, a first surface C of the other extension portion₂And the first surface C₂Oppositely arranged second surface D₂The second electrodes 33b are provided, that is, the number of the first electrodes 33a and the second electrodes 33b is two. When the first electrode 33a and the second electrode 33b are connected to two electrode leads, one Y-shaped electrode lead may be connected to the first electrode 33a on both surfaces of the first extension 321, and the other Y-shaped electrode lead may be connected to the second electrode 33b on the second extension 322; the first electrode 33a and the second electrode 33b are arranged on the two surfaces, so that welding is facilitated, the contact area with the conductive ceramic heating body 32 can be increased as much as possible to reduce contact resistance, smaller heat is generated when the heating body 32 is electrified, the temperature is reduced, the two surfaces of the conductive ceramic heating body 32 are electrified simultaneously, the same potential is formed on the two surfaces, the electric field of conductive components between the two surfaces is uniform, and the heating effect is better; thus, the first electrode 33a and the second electrodeThe mount 20 can be provided at the position of the electrode 33b (heat generation is low due to the small resistance of the heating element 32 at the first and

second electrodes

33a, 33 b), and the mount 20 can be prevented from being damaged by high temperature. Specifically, in this embodiment, the first electrode 33a and the second electrode 33b may also be formed in a coating manner to improve the bonding force between the electrodes and the heat-generating body 32, thereby improving the connection stability between the electrode leads connected to the electrodes and the heat-generating body 32.

In a specific embodiment, referring to fig. 36, fig. 36 is a side view of a heat-generating body provided in an embodiment of the present application; the surface of the heating element 32 may be further coated with a protective layer 35, and the protective layer 35 covers the first electrode 33a and the second electrode 33b to prevent the first electrode 33a, the second electrode 33b and the heating element 32 from being damaged by tobacco tar formed when the tobacco is heated; specifically, the protective layer 35 may be a glass glaze layer. Further, the protective layer 35 may also cover the entire substrate 31, thereby giving a smooth surface to the entire heat generating component 30.

Specifically, referring to fig. 33, the heat generating body 32 includes a first heat generating region a and a second heat generating region B connected to the first heat generating region a, wherein the first heat generating region a is a main atomizing region inserted into the aerosol-forming substrate 102 for heating, such that the substrate 31 and the heat generating body 32 are at least partially inserted onto the aerosol-forming substrate 102, the atomizing temperature thereon is concentrated at 280 ℃ to 350 ℃ and occupies more than 75% of the area of the atomizing region, the second heat generating region B is a main matching section of the heat generating body 32, the temperature is below 150 ℃, that is, the temperature of the first heat generating region a is higher than that of the second heat generating region B, and the portion of the heat generating body 32 located in the second heat generating region B is fixed to the mounting seat 20 to prevent the mounting seat 20 from being damaged due to the excessively high temperature of the second heat generating region B (for example, PEEK may be melted if PEEK is plastic) or the mounting seat 20 (for example, a ceramic fixing seat) may transmit the high temperature to other portions of the aerosol-forming device when the temperature of the second heat generating region B is excessively high temperature, the temperature of the shell is too hot or the internal circuit board is damaged, and the heat utilization of the first heat-generating area A is reduced by temperature conduction; in an embodiment, the first electrode 33a and the second electrode 33B are disposed in the second heat generating region B of the heating element 32 to reduce the atomization temperature of the ceramic heating element 32, so that the ratio of the heat generating temperature of the first heat generating region a to the heat generating temperature of the second heat generating region B of the heating element 32 is greater than 2. Specifically, the method for controlling the temperatures of the first heat-generating area a and the second heat-generating area B of the heat-generating body 32 may specifically refer to the scheme provided in the first embodiment, and is not described herein again.

The heating element 30 provided in the present embodiment is configured to heat the aerosol-forming substrate 102 by the heating element 32 after the aerosol-forming substrate 102 is inserted by providing the substrate 31 and the heating element 32; meanwhile, by providing the heat-generating body 32 to include the first extension 321 and the second extension 322 connected to the first extension 321, and the base plate 31 and the first extension 321 and the second extension 322 of the heat-generating body 32 for at least partially inserting the aerosol-forming substrate 102 and generating heat when energized to heat the aerosol-forming substrate 102; compared with the existing resistance heating circuit silk-screened on the substrate, the substrate 31 and the heating element 32 can be directly and independently inserted into the aerosol formation substrate 102, the problem that the heating element 32 falls off from the substrate 31 to cause failure when the heating element generates heat at high temperature is avoided, and the stability of the heating assembly 30 is greatly improved; in addition, by arranging the substrate 31 and embedding the heating element 32 in the substrate 31, the strength of the heating element 30 is improved, so that the heating element 30 can be stressed through the substrate 31 in the process of inserting the aerosol-forming substrate 102, and the problem that the heating element 32 is bent due to stress is effectively avoided.

In one embodiment, see fig. 34, wherein the through slots are close to the second surface D of the substrate 31₁A first flange 312 having a thickness smaller than that of the heating element 32 in the thickness direction of the heating element 32 is provided on the inner side wall of the substrate 32 at least in a position corresponding to the first heat generation region a of the heating element 32, and the heating element 32 is specifically overlapped on a second surface D of the first flange 312 away from the substrate 31₁To prevent the substrate from falling off from the through groove of the substrate 31; specifically, a surface of the first flange 312 and the second surface D of the substrate 31₁Flush with the substrate 31 and integrally formed with the substrate 31, in this embodiment, the substrate 31 can be cut by laser according to a preset dimension to form the stepped substrate 31 with the first flange 312, which can effectively ensure the dimensional accuracy of the product and greatly improve the first flangeThe supporting strength of the flange 312.

In a specific embodiment, referring to fig. 34, the first flange 312 extends continuously to the inner wall surface of the entire through groove along the circumferential direction of the through groove, and it should be noted that the first flange 312 is smaller than the thickness of the heating element 32 in the thickness direction of the heating element 32, which can be specifically understood that the first flange 312 is disposed around the circumferential direction of the through groove so that the first flange 312 and the through groove have the same shape, and when the through groove is a U-shaped groove, the first flange 312 has a continuous U-shaped structure.

In an embodiment, referring to fig. 34 and 35, the first heat-generating region a and the second heat-generating region B may only be configured such that all or part of the first heat-generating region a of the heat-generating body 32 is accommodated in the accommodating groove 311, and the second heat-generating region B is configured in a suspended manner, referring to fig. 33, at this time, the schematic diagram of the heat-generating assembly 30 inserted into the aerosol-forming substrate 102 may refer to fig. 35, or all positions corresponding to the first heat-generating region a are accommodated in the accommodating groove 311, and a small part of the second heat-generating region B is also accommodated in the accommodating groove 311, and a large part of the second heat-generating region B is configured in a suspended manner, and at this time, the mounting base 20 and the suspended portion of the heat-generating body 32 are fixed.

In particular, in this embodiment, the substrate 31 may be wholly or partially inserted into the aerosol-forming substrate 102, with the heat-generating body 32 still being partially inserted into the aerosol-forming substrate 102; specifically, only most or all of the first heat generating region a of the heat generating body 32 is inserted into the aerosol-forming substrate 102, and the portion corresponding to the second heat generating region B remains outside the aerosol-forming substrate 102, i.e., the aerosol-forming substrate 102 is not inserted; alternatively, the first heat-generating zone a and a small portion of the second heat-generating zone B of the heat-generating body 32 are both inserted into the aerosol-forming substrate 102, and the portion corresponding to the large portion of the second heat-generating zone B remains outside the aerosol-forming substrate 102.

In this embodiment, refer to fig. 37 and 38, where fig. 37 is a schematic structural diagram of a heat generating component according to a fifth embodiment of the present application; FIG. 38 is a disassembled view of the heating element shown in FIG. 37; the first extension part 321 and the second extension part 322 are provided with a first protrusion 3211 and a second protrusion 3221, which are disposed opposite to each other, at a portion of the heating element 32 located in the second heat generation region B, so that the width of the portion of the heating element 32 located in the second heat generation region B is greater than the width of the portion located in the first heat generation region a, thereby ensuring the strength of the second heat generation region B of the heating element 32, and making the resistance of the second heat generation region B of the heating element 32 smaller than that of the first heat generation region a, so that the temperature corresponding to the second heat generation region B of the heating element 32 is lower. Specifically, in this embodiment, the length of the substrate 31 is smaller than the length of the heat-generating body 32.

Specifically, the first convex portion 3211 and the second convex portion 3221 are respectively abutted against the end portions of the substrate 31; in an embodiment, the width W25 of the first protrusion 3211 and the second protrusion 3221 may be the same as the width W26 of two opposite sidewalls of the receiving groove 311, where the two opposite sidewalls of the receiving groove 311 refer to two extending portions of the substrate 31 that are spaced apart from each other and arranged in parallel; in one embodiment, referring to fig. 38, the end portions of the first extension portion 321 and the second extension portion 322 far from the third extension portion 323 are provided with a second flange 313 flush with the first flange 312, the positions of the first protrusion portion 3211 and the second protrusion portion 3221 corresponding to the second flange 313 are provided with a first position avoidance portion 324 corresponding to the second flange 313, and the first position avoidance portion 324 overlaps the second flange 313 to support the second heat generation region B of the heat generation body 32 through the second flange 313.

Specifically, when only the first heat-generating region a of the first heat-generating region a and the second heat-generating region B of the heat-generating body 32 is accommodated in the accommodating groove 311, two first flanges 312 are arranged on the inner wall surface of the accommodating groove 311 only at positions corresponding to part of the first heat-generating region a of the heat-generating body 32, and the part of the heat-generating body 32 located in the first heat-generating region a is overlapped on the two first flanges 312.

In a specific embodiment, the structural size of the heating element 32 corresponding to fig. 34 can be specifically seen in fig. 39, and fig. 39 is a schematic size diagram of the heating element corresponding to fig. 37; in this embodiment, the total width of the substrate 31 may be 6-10 mm, such as 6 mm, and the total thickness may be 0.3-0.6 mm, such as 0.5 mm; wherein the first surface C of the substrate 31₁May be 0.5-1 mm, for example may be 0.75 mm, and the second surface D of the substrate 31₁May 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 receiving groove 311 may be 0.2 to 0.3 mm, for example, 0.25 mm, and the axial length of the first flange 312 may be 6 to 10 mm, for example, 6.00 mm; the length L22 of the heating element 32 installed in the containing groove 311 may be 10 to 17 mm, for example, 16.1 mm, the width W24 of the portion overlapping the first flange 312 may be 2 to 5 mm, for example, 3.4 mm, and the width W27 of the portion caught between the first flanges 312 may be 2 to 3 mm, for example, 2.4 mm; the length L23 of the first extension part 321 and the second extension part 322 may be 13-16 mm, such as 14.55 mm, the distance between the first extension part 321 and the second extension part 322 is less than one tenth of the width of the entire heat-generating body 32, the distance L24 between the first extension part 321 and the second extension part 322 may range from 0.25-0.35 mm, such as the distance L24 therebetween may specifically be 0.3 mm; specifically, the height of the first relief portion 324 is the same as the thickness H22 of the first flange 312. Specifically, the error range of the above dimensions is not more than 0.05 mm.

In a specific embodiment, refer to fig. 40 to 42, wherein fig. 40 is a schematic structural view of a mounting base and a heat generating component provided in an embodiment of the present application after being assembled; fig. 41 is a schematic structural diagram of a mounting base and a heat generating component according to another embodiment of the present application after being assembled; FIG. 42 is a disassembled view of the product corresponding to FIG. 41; specifically, when the first extension 321 and the second extension 322 are located at the second heat generating region B without providing the protrusion, the structure of the product after the mounting base 20 is fixed to the heat generating component 30 can be seen in fig. 40; when the first extension 321 and the second extension 322 are provided with the protruding portions at the portions of the second heat generating region B, the structure of the product after the mounting base 20 is fixed with the heat generating component 30 can be seen in fig. 41 and 42.

Please refer to fig. 43 and 44, wherein fig. 43 is a schematic structural view illustrating an assembled mounting base and a heat generating component according to another embodiment of the present application; FIG. 44 is a disassembled schematic view of the heating element of the product shown in FIG. 43 according to one embodiment of the present disclosure; in the present embodiment, there is provided a heat generating component 30, and the heat generating component 30 includes a heat generating body 91, a first electrode 92a, and a second electrode 92 b.

Wherein the heating element 91 is used to insert and heat the aerosol-forming substrate 102; compared with the existing resistance 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 formation substrate 102, the problem of failure caused by the fact that the heating element 91 falls off from the substrate when heated at high temperature is avoided, and the stability of the heating assembly 30 is greatly improved; specifically, the heating element 91 has a first connection end E and a second connection end F opposite to the first connection end E, and when the heating element 91 is inserted into tobacco, the second connection end F of the heating element 91 is inserted into the tobacco first, so that, in order to facilitate the insertion of the heating element 91 into the tobacco, the second connection end F of the heating element 91 may be specifically set to be pointed, that is, to be in a triangular structure, so as to form a pointed end portion D; and the included angle formed by two adjacent sides of the tip can be 45 degrees to 90 degrees, such as 60 degrees. Specifically, the first electrode 92a and the second electrode 92b are specifically arranged at the first connection end E of the heating element 91, the first electrode 92a is electrically connected with the first connection end E of the heating element 91, and the second electrode 92b is arranged in an insulated manner with the first connection end E of the heating element 91 to avoid short circuit; and the second electrode 92b extends from the first connection end E to the second connection end F of the heating element 91 and 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 processing technology is simpler like this, and has effectively improved the bulk strength of heating element 30, has reduced the adhesion to the tobacco and to the adhesion of tobacco tar after the atomizing in the use simultaneously.

Specifically, the shape and size of the heating element 91 are not limited, and may be designed as needed. In one embodiment, the heating element 91 is a bar shape, such as a rectangle, and one end of the rectangle forms a tip.

Specifically, referring to fig. 43, the heating element 91 includes a first heating area a and a second heating area B connected to the first heating area a, wherein the first heating area a is a main atomization area into which the aerosol-forming substrate 102 is inserted for heating, the atomization temperature thereof is concentrated at 280 to 350 ℃, and occupies 75% or more of the area of the atomization area, and the second heating area B is a main matching section of the heating element 91, and has a temperature below 150 ℃; that is, the temperature of the first heat-generating region a is higher than that of the second heat-generating region B, and the portion of the heat-generating body 91 located in the second heat-generating region B is fixed to the mounting base 20, so as to prevent the mounting base 20 from being damaged due to the over-high temperature of the second heat-generating region B (for example, PEEK may be melted as plastic) or prevent the mounting base 20 (for example, a ceramic fixing base) from transmitting high temperature to other portions of the aerosol-forming device when the temperature of the second heat-generating region B is over-high, so that the case temperature is too hot or the internal circuit board is damaged, and the heat utilization of the first heat-generating region a is reduced by temperature conduction; specifically, the ratio of the heating temperature of the first heating area a to the heating temperature of the second heating area B of the heating element 91 may be greater than 2; in the specific embodiment, the first electrode 92a is specifically disposed in the second heat generation region B of the heat generating body 91 to lower the atomization temperature of the ceramic heat generating body 91 located in the second heat generation region B; it can be understood that the first connection end E of the heat generating body 91 is located at the position of the second heat generating area B of the heat generating body 91, and the second connection end F is located at the position of the first heat generating area a of the heat generating body 91. Specifically, the materials and the temperature control methods of the first heat-generating area a and the second heat-generating area B of the heat-generating body 91 may refer to the temperature control methods of the first heat-generating area a and the second heat-generating area B provided in the first embodiment, and are not described herein again.

In a particular embodiment, only a majority of the first heat-generating zone a and the second heat-generating zone B of the heat-generating body 91 are inserted into the aerosol-forming substrate 102, while a minority of the first heat-generating zone a and the second heat-generating zone B stay outside the aerosol-forming substrate 102; or the first heat generating zone a is fully inserted into the aerosol-forming substrate 102 and the second heat generating zone B remains outside the aerosol-forming substrate 102; or the first heat generating zone a is fully inserted into the aerosol-forming substrate 102 and a small portion of the second heat generating zone B is also inserted into the aerosol-forming substrate 102, only a large portion of the second heat generating zone B remaining outside the aerosol-forming substrate 102. At this time, the portion of the heating element 91 that stays outside the aerosol-forming substrate 102 is fixed to the mounting base 20.

Specifically, the first electrode 92a and the second electrode 92b in this embodiment may also be disposed on the surface of the heating element 91 in a coating manner 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 leads 95 connected to the first electrode 92a and the second electrode 92b and the heating element 91.

In one embodiment, see fig. 44; the heating element 91 may be plate-shaped and includes a main body C and a tip D connected to one end of the main body C; wherein, the second connection end F of the heating element 91 is the tip end D, and the first connection end E of the heating element 92 is the end of the main body part C away from the tip end D; one end of the second electrode 92b remote from the second connection end F is provided at the first connection end E of the heating element 92. The main body C may be rectangular, and the tip D may be triangular, arc-shaped, or isosceles trapezoid.

Specifically, the heating element 91 may be a strip-shaped heating plate.

In a specific embodiment, referring to fig. 44, a first electrode 92a and a second electrode 92b are oppositely disposed on both sides of the heat generating plate; specifically, the first electrode 92a is coated on the first surface M of the heating plate and electrically connected to the first connection end E of the heating plate, the second surface N of the heating plate, which is opposite to the first surface M, is provided with an insulating layer 93, 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 body 91 is exposed out of the insulating layer 93 on the second surface N of the second connection end F; the second electrode 92b is specifically provided on a surface of the insulating layer 93 remote from the heat generating plate and extends toward the second connection terminal F of the heat generating body 91, and a portion of the second electrode 92b extends outside the insulating layer 93 to be in contact with and electrically connected to the second connection terminal F of the heat generating plate. It is understood that the first electrode 92a may also be coated on the first surface M, the second surface N and the side surfaces of the heat generating plate, i.e., form a ring shape. Wherein, the portion of the first electrode 92a coated on the second surface N of the heating plate is disposed between the insulating layer 93 and the heating plate.

Specifically, the first electrode 92a may have a rectangular structure, and the insulating layer 93 may have a T-shape; specifically, the second electrode 92b includes a first coating portion 921, a second coating portion 922, and a third coating portion 923; the first coating portion 921 is coated on a side surface of the insulating layer 93 far away from the heating element 91 and is disposed opposite to the first electrode 92a, and a shape of the first coating portion 921 is the same as a shape of the first electrode 92a, the second coating portion 922 is connected to the first coating portion 921, the first coating portion 93 is coated on a side surface of the insulating layer 93 far away from the heating element 91 and is the same as an extension portion of the insulating layer 93, the third coating portion 923 is connected to the second coating portion 922, is directly coated on the second surface N of the heating element 91 and is 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 may be specifically in a rectangular structure in a long strip shape; specifically, the first, second, and third coating portions 921, 922, and 923 are formed in an i-shaped structure. It is to be understood that the insulating layer 93 and the second electrode 92b are not limited to the above-described shapes, and may be designed as needed; in a specific embodiment, the sizes of the first, second, and

third coating portions

921, 922, 923 are smaller than the size of the insulating layer 93 at the respective positions.

In one embodiment, at least one surface of the heating element 91 is further coated with a protective layer 94, and the protective layer 94 covers at least the first electrode 92a and the second electrode 92b to prevent the tobacco tar formed when the tobacco is heated from damaging the first electrode 92a and the second electrode 92 b; of course, the protective layer 94 may cover the entire surface of the heat-generating body 91 (see fig. 44) so as to allow the entire heat-generating body 91 to have a smooth surface while protecting the first electrode 92a, the second electrode 92b, and the heat-generating body 91. Specifically, the protective layer 94 may be a glass glaze layer.

In another embodiment, referring to FIG. 45, FIG. 45 is a disassembled schematic view of the heating element of the product of FIG. 43 according to another embodiment of the present application; unlike the first embodiment described above, the first electrode 92a and the second electrode 92b are disposed on the same side of the heat-generating body 91. Specifically, the first electrode 92a is coated on the first surface M of the heating element 91 and electrically connected to the first connection end E of the heating plate; specifically, the surface of the first electrode 92a away from the heat generating 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 heat generating 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 heat generating body 91, and a portion of the second electrode 92b extends outside the insulating layer 93 to be in contact with and electrically connected to the second connection end F of the heat generating plate.

Specifically, the first electrode 92a may have a rectangular structure, and the insulating layer 93 may have a T-shape, and specifically, a 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 the first electrode 92a or has the same size as the first electrode 92 a. It is to be understood 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 covers the entire first electrode 92a, or the insulating layer 93 covers a portion of the first electrode 92a but the size of the insulating layer 93 is larger than that of the second electrode 92 b.

In a specific embodiment, a first electrode 92a may be further disposed at a position where the second surface N of the heating element 91 is opposite to the first electrode 92a, and a second electrode 92b may be further disposed at a position where the second surface N of the heating element 91 is opposite to the second electrode 92b through an insulating layer 93, that is, the number of the first electrode 92a and the second electrode 92b is two, so that the conductive component of the conductive ceramic close to both surfaces of the conductive ceramic may have a shorter current path, and the temperature fields of both surfaces of the heating element 91 are more uniform.

The heating element assembly 30 provided in the present embodiment is configured to heat the aerosol-forming substrate 102 by the heating element 91 after the aerosol-forming substrate 102 is inserted by providing the heating element 91; compared with the existing resistance heating circuit of silk-screen printing or film coating on the substrate, the heating element 91 can be directly and independently inserted into the aerosol formation substrate 102, the problem of failure caused by the fact that the heating element 91 falls off from the substrate when high-temperature heating is carried out is avoided, and the stability of the heating component 30 is greatly improved; meanwhile, the heating element 91 is arranged in a plate shape, so that the contact area between the aerosol forming substrate 102 and the heating element 91 is effectively increased, and the energy utilization rate and the heating efficiency are improved; in addition, the first electrode 92a and the second electrode 92b insulated from the first electrode 92a are disposed, the first electrode 92a is disposed at the first connection end E of the heating element 91 and electrically connected to the first connection end E, and 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, which not only can avoid the short circuit problem, but also has a simpler processing process and a higher strength of the heating element 30.

Of course, in other embodiments, refer to fig. 46 and 47, wherein fig. 46 is a sectional view of the parallel arrangement of the heating elements provided in one embodiment of the present application; FIG. 47 is a sectional view showing heating elements arranged in parallel according to another embodiment of the present application; the heating unit 30 includes at least two heating elements 91, and the at least two heating elements 91 are arranged in parallel. In one embodiment, the number of the heating elements 91 may be two, and the two heating elements 91 are disposed opposite to each other with an insulating layer 93 disposed therebetween.

In a specific embodiment, referring to fig. 46, the first electrodes 92a are disposed on the opposite side surfaces of the two heating elements 91, and the first electrodes 92a are disposed at the first connection ends E of the two heating elements 91; in this embodiment, the second electrode 92b is provided on the insulating layer 93, 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 ends 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.

In another embodiment, referring to FIG. 47, the first electrode 92a is provided at a position of the insulating layer 93 corresponding to the first connection ends E of the heat-generating bodies 91 and electrically connected to the first connection ends E of the two heat-generating bodies 91; in this embodiment, the second connection terminals F of the two heating elements 91 are respectively connected to the corresponding second electrodes 92b, so that the two heating elements 91 are arranged in parallel through the first electrodes 92a and the corresponding second electrodes 92 b; specifically, the opposite side surfaces of the two heating elements 91 are coated with the insulating layer 93, and the second electrode 92b on each heating element 91 is disposed 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 to be connected with the second connection end F of the heating element 91.

In another embodiment, referring to fig. 48, fig. 48 is a schematic structural diagram of a heat generating component according to a sixth embodiment of the present application; different from the first embodiment, the heating element 91 may be a columnar body and includes 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 91 is the end of the main body C away from the tip D; in one embodiment, the main body portion C may be cylindrical, and the tip portion D may be conical or frustoconical; specifically, the heating element 91 may be a heating rod as shown in fig. 48, and the second connecting end F of the heating rod is a tip end for being inserted into the tobacco conveniently.

Specifically, referring to fig. 49, fig. 49 is a disassembled schematic view of the structure shown in fig. 48 according to an embodiment of the present disclosure; the first electrode 92a is disposed on at least a part of the surface of the first connection end E of the heat generating rod; an insulating layer 93 is arranged on the outer side wall of the main body part C of the heating rod, 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 the position of the main body part C close to the tip end D is exposed out of the insulating layer 93, the second electrode 92b is arranged on the surface of the insulating layer 93 far away from the heating rod, and part of the second electrode 92b extends out of the insulating layer 93 and is arranged in contact with the second connecting end F of the heating rod, namely, part of the second electrode 92b extends out of the insulating layer 93 and is arranged in contact with the second connecting end F of the main body part C of the heating body 91 close to the tip end D and is exposed out of the insulating layer 93.

Further, in one embodiment, the first electrode 92a is disposed around the outer sidewall of the heating rod, which may be an arc-shaped structure; in this embodiment, the insulating layer 93 is wound by one turn around the circumferential direction of the heating rod, and a gap is formed between the insulating layer 93 and the position of the heating rod corresponding to the position where the first electrode 92a is disposed, so that the first electrode 92a is at least partially exposed through the gap, thereby facilitating connection of the electrode lead 95; in an embodiment, the portion of the second electrode 92b extending out of the insulating layer 93 may be disposed around the main body C of the heat generating rod, which may be in a ring structure, so as to maintain the effective connection between the second electrode 92b and the second connection end F of the heat generating rod. Of course, in other embodiments, the first electrode 92a may further include a bottom surface extending to the heat generating rod near the first connection end E to increase the overall bonding force and electrical reliability.

In another embodiment, the first electrode 92a may also be disposed around the outer sidewall of the heating rod and have a ring structure, and the insulating layer 93 may specifically cover the first electrode 92a completely and be disposed around the outer sidewall of the heating rod for one turn, which is not limited in this embodiment as long as the insulating layer 93 can prevent the first electrode 92a and the second electrode 92b from being shorted.

In one embodiment, at least one surface of the heat generating rod is further coated with a protective layer 94, and the protective layer 94 covers at least the first electrode 92a and the second electrode 92b to prevent the first electrode 92a and the second electrode 92b from being damaged by smoke generated when the tobacco is heated; of course, in other embodiments, referring to fig. 50, fig. 50 is a schematic structural view of a heat generating component in which a protective layer is coated on the entire surface of a heat generating rod according to an embodiment of the present application. The protective layer 94 may also cover the entire surface of the heat generating rod, thereby allowing the entire heat generating rod to have a smooth surface while protecting the first electrode 92a, the second electrode 92b, and the heat generating rod. Specifically, the protective layer 94 may be a glass glaze layer.

In one embodiment, the resistance of the heating rod may be 0.3-1 ohm, such as 0.6 ohm, and the resistivity may be 1 x 10^-4Ohm-4 x 10^-4Ohm, specifically 2 x 10^-4Ohm, the power used may be 2 watts to 5 watts, and may specifically be 3.5W. Specifically, referring to FIG. 50, the total length L41 of the heat generating rod may be 18-20 mm, the length L42 for inserting into tobacco may be 14-15 mm, and the diameter phi of the heat generating rod may be 2.0-3.0 mm, such as 3 mm.

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

Specifically, the heating element 91 is arranged to be columnar, so that the heating element 91 is conveniently inserted into tobacco, the columnar heating element 91 is easy to process, and the processing difficulty coefficient is effectively reduced.

Specifically, the heating element 11 (or 32 or 91) as described above may be a self-supporting structure, that is, the heating element 11 (or 32 or 91) may exist independently without being attached to another carrier; compared with the existing resistance heating circuit formed by printing or coating a resistance heating element on a substrate, the heating element 11 (or 32 or 91) with the self-supporting structure can be directly and independently inserted into the aerosol-forming substrate 102, the problem that the heating element falls off from the substrate or the metal substrate when heated at high temperature is avoided, and the stability of the heating component 30 is greatly improved; and because the heating element 11 (or 32 or 91) is a self-supporting structure, without matching a substrate, two opposite surfaces of the heating element 11 (or 32 or 91) can be in direct contact with the tobacco in the aerosol-forming substrate 102, so that the energy utilization rate is high, the heating of the tobacco is uniform, the preset temperature field boundary is clear, and particularly, the power is convenient to control and design in real time when the low-pressure starting is carried out.

Specifically, the heating element 11 (or 32 or 91) may be made of a conductive ceramic, and compared with the existing metal material, the ceramic heating element 11 (or 32 or 91) has higher conductive efficiency and more uniform temperature generated by heating: the heating element 11 (or 32 or 91) made of the ceramic can be adjusted and designed at 3-4W, and the electric conductivity can reach 1 x 10^-4Ohm-1 x 10^-6Ohm, bending strength is larger than MPa, and fire resistance is higher than 1200 ℃; meanwhile, the heating element 11 (or 32 or 91) made of the ceramic has a characteristic of full-time starting voltage.

Specifically, the electromagnetic heating wavelength of the material of the heating element 11 (or 32 or 91) made of the ceramic is the mid-infrared wavelength, which is beneficial to atomizing the tobacco tar and improving the taste; in addition, the crystal phase structure of the heating element 11 (or 32 or 91) made of the ceramic is high-temperature stable oxide ceramic, and the oxide ceramic has good fatigue resistance, high strength and high density, so that the problems of volatilization and dust of harmful heavy metals can be effectively avoided, and the service life of the heating element 11 (or 32 or 91) is greatly prolonged.

The ceramic integral heating body 11 (or 32 or 91) can reduce the area of the highest temperature hot spot, eliminate the risks of fatigue cracking and fatigue resistance increase and have better consistency; and because of 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 easy to clean and not easy to adhere; in addition, the heating element 11 (or 32 or 91) is manufactured by adopting a ceramic production process, the ceramic production process mainly comprises the working procedures of raw material mixing, forming, sintering and cutting, the process is simple and convenient to control, the cost is low, and the popularization of production and the improvement of economic benefits are facilitated.

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 for conducting electricity and enabling the heating element 11 (or 32 or 91) of the conductive ceramics to form a certain resistance; it can be one or more of manganese, strontium, lanthanum, tin, antimony, zinc, bismuth, silicon and titanium; the crystal component, i.e., the main material of the ceramic material, is mainly used for forming the shape and structure of the conductive ceramic, and may be one or more of lanthanum manganate, lanthanum strontium 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) may be made of a metal alloy or a ceramic alloy made of an iron-silicon-aluminum alloy.

The heating component 30 provided by the embodiment of the application can directly adopt a self-supporting ceramic heating plate (or heating rod) in a heating form, and the heating bodies 11(32 or 91) can be arranged into a single series connection type according to the electrode arrangement position and resistance value requirements; meanwhile, the heating element 11 (or 32 or 91) is made of ceramic materials, and compared with the existing resistance heating circuit formed by coating metal heating materials on a substrate, the resistance heating circuit can simultaneously contact and heat tobacco on two sides, and heating is more uniform and stable.

Referring to fig. 51, fig. 51 is a schematic structural diagram of an aerosol-forming device according to an embodiment of the present disclosure; in this embodiment, an aerosol-forming device 100 is provided, the aerosol-forming device 100 comprising a housing 101 and a heater assembly 10 and a power supply assembly 40 arranged within the housing 101.

The heater assembly 10 may be the heater assembly 10 provided in the above embodiments, and the specific structure and function of the heater assembly 10 may refer to the description of the heater assembly 10 in the above embodiments, which is not repeated herein; specifically, the heater assembly 10 is mounted on the inner side wall of the housing 101 through the mounting seat 20; and the heater module 10 is connected to the power supply module 40 to supply power to the heat generating body in the heater module 10 through the power supply module 40; in particular, the power supply assembly 40 may be a rechargeable lithium ion battery.

In the aerosol-forming device 100 provided by the present embodiment, by providing the heater assembly 10, providing the heater assembly 10 by providing the heating assembly 30, and providing the heating assembly 30 in a structure including the heating element 11 (or 32 or 91) to insert and heat the aerosol-forming substrate 102 through at least part of the heating element 11 (or 32 or 91), compared with the existing resistance heating circuit screen-printed 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 substrate 102, and the problem of failure due to falling off from the substrate when heated at high temperature does not occur, so that the stability of the heating assembly 30 is greatly improved; meanwhile, by providing the mount 20, the heating element 11 (or 32 or 91) is fixed to the mount 20, so that the heating element 30 is fixed in the aerosol-forming device 100 by the mount 20; among them, since the heating element 11 (or 32 or 91) itself can be independently inserted into the aerosol-forming substrate 102, that is, the heating element 11 (or 32 or 91) has a substantially self-supporting structure, compared to the conventional scheme in which the resistive heating line is a thin film, the mount 20 is fixed to the heating element 11 (or 32 or 91) provided in the present application, and the problem that the mount 20 affects the resistive heating line can be effectively avoided; and no additional installation substrate is needed to install the installation seat 20, thereby effectively reducing the production cost.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A heater assembly, comprising:

a mounting seat;

the heating assembly comprises a heating body, and the heating body is provided with a first connecting end and a second connecting end opposite to the first connecting end; wherein the heating element is fixed with the mounting seat, and at least part of the heating element is used for inserting and heating the aerosol-forming substrate.

2. The heater assembly of claim 1, wherein the heater body includes a first heat-generating region and a second heat-generating region connected to the first heat-generating region, wherein the second heat-generating region is at a lower temperature than the first heat-generating region, and wherein a portion of the heater body located in the second heat-generating region is secured to the mounting base and a portion of the heater body located in the first heat-generating region is configured to insert and heat the aerosol-forming substrate.

3. The heater assembly of claim 2, wherein the heat generating assembly further comprises:

a first electrode electrically connected to the first connection terminal of the heating element;

and the second electrode is electrically connected with the second connecting end of the heating body.

4. A heater assembly according to claim 3, wherein the heat generating body comprises first extensions arranged at intervals and a second extension connected to one end of the first extension, the first and second extensions each being adapted to be at least partially inserted into the aerosol-forming substrate and to generate heat when energised to heat the aerosol-forming substrate.

5. The heater assembly according to claim 4, wherein the first extension is juxtaposed with the second extension at a spacing, the heat generating assembly further comprising a third extension for fully inserting and heating the aerosol-forming substrate, the first and second extensions being connected at their proximal ends by the third extension, and the first electrode being provided at the end of the first extension remote from the third extension and the second electrode being provided at the end of the second extension remote from the third extension.

6. The heater assembly as claimed in claim 4 or 5, wherein the heating assembly further comprises a fixing sheath provided around the outside of the heating body.

7. The heater assembly of claim 5, further comprising a substrate having a receiving cavity, wherein only the first heat-generating region of the first and second heat-generating regions of the heat-generating body is embedded within the receiving cavity of the substrate, and wherein at least a portion of the substrate is inserted into the aerosol-forming substrate.

8. The heater assembly as claimed in claim 7, wherein the substrate has a first surface and a second surface opposite to the first surface, and the receiving groove is a through groove penetrating the first surface and the second surface, so that portions of the heat generating body located in the first heat generating region are exposed from one side of the first surface and one side of the second surface, respectively.

9. The heater assembly as claimed in claim 7 or 8, wherein the receiving groove is provided with a first flange at a position close to the second surface of the substrate and corresponding to at least a portion of the first heat-generating region of the heat-generating body, and a portion of the heat-generating body located at the first heat-generating region is overlapped on the first flange.

10. The heater assembly according to claim 9, wherein portions of the first and second extensions located in the second heat generation region have first and second bosses provided opposite to each other, the first and second bosses abutting against ends of the substrate, respectively; the first boss and the second boss are inserted into the mounting seat.

11. The heater assembly according to claim 10, wherein a second flange is provided at an end of the base plate abutting against the first protrusion and the second protrusion, and a first relief portion is provided at a position of the first protrusion and the second protrusion corresponding to the second flange, and the first relief portion overlaps the second flange.

12. The heater assembly according to claim 3, wherein the first electrode is insulated from the second electrode, and the first electrode is disposed at and electrically connected to a first connection end of the heating element; one end of the second electrode is electrically connected with the second connecting end, and the other end of the second electrode extends towards the first connecting end of the heating body.

13. The heater assembly as claimed in claim 12, wherein the heating body is plate-shaped and includes a main body portion and a tip portion connected to one end of the main body portion, the second connection end of the heating body is the tip portion, and the first connection end of the heating body is an end of the main body portion away from the tip portion; one end of the second electrode, which is far away from the second connecting end, is arranged at the first connecting end of the heating body.

14. The heat generating component as claimed in claim 13, wherein said first electrode is provided on a first surface of said heat generating body;

the second surface of the heating element is provided with an insulating layer, the insulating layer extends from the first connecting end of the heating element to a position close to the second connecting end, the heating element is exposed out of the insulating layer on the second surface of the second connecting end, the second electrode is arranged on the surface of the insulating layer far away from the heating element, and part of the second electrode extends out of the insulating layer and is arranged in contact with the second connecting end of the heating element; wherein the first surface is disposed opposite the second surface.

15. The heat generating component as claimed in claim 13, wherein said first electrode is provided on a first surface of said heat generating body;

the surface of the first electrode, which is far away from the heating element, is provided with an insulating layer, the insulating layer extends from the first connecting end of the heating element to a position close to the second connecting end, the second electrode is arranged on the surface of the insulating layer, which is far away from the first electrode, and part of the second electrode extends out of the insulating layer and is in contact with the second connecting end of the heating element.

16. The heating element as claimed in claim 12, wherein the heating element has a columnar shape and includes a main body portion and a tip portion connected to one end of the main body portion, the second connection end of the heating element is the tip portion, and the first connection end of the heating element is an end of the main body portion away from the tip portion.

17. The heat generating component as claimed in claim 16, wherein the first electrode is provided on at least a part of a surface of the first connection end of the heat generating body;

the outer side wall of the main body part of the heating body is provided with an insulating layer, the insulating layer extends from the first connecting end of the heating body to a position close to the second connecting end and enables the position of the main body part close to the tip part to be exposed out of the insulating layer, the second electrode is arranged on the surface of the insulating layer far away from the heating body, and part of the second electrode extends out of the insulating layer and is arranged in contact with the second connecting end of the main body part of the heating body close to the tip part and exposed out of the insulating layer.

18. The heater assembly as claimed in claim 1, wherein the heating element is made of conductive ceramic.

19. The heater assembly as claimed in claim 18, wherein the heat generating body of 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, lanthanum strontium manganate, tin oxide, zinc oxide, antimony oxide, bismuth oxide, silicon oxide and yttrium oxide.

20. The heater assembly as claimed in claim 3, wherein the mounting seat includes a mounting body and a mounting hole provided in the mounting body, and at least a portion of the heat generating body corresponding to the portion of the second heat generating region is inserted into the mounting hole to be fixed to the mounting seat.

21. The heater assembly as claimed in claim 20, wherein the mounting hole is a through hole, and the size and shape of the mounting hole are matched with the shape and size of a portion of the heat generating body inserted into the mounting hole.

22. The heater assembly of claim 20, wherein two avoidance slots are defined in the mounting hole, the two avoidance slots extending in an axial direction of the mounting hole for passage of an electrode lead.

23. The heater assembly of claim 20, wherein the mounting body is further provided with at least two snap-fit portions for securing the mounting base to a housing of an aerosol-forming device.

24. The heater assembly as claimed in claim 20, wherein the mounting body is further provided with at least one extension groove communicating with the mounting hole to fix a portion of the heating body inserted into the mounting hole.

25. An aerosol-forming device, comprising: a housing and a heater assembly and a power supply assembly disposed within the housing; wherein the power supply assembly is connected to a heat generating body in the heater assembly for supplying power to the heat generating body, and the heater assembly is the heater assembly according to any one of claims 1 to 24.