CN115119979A

CN115119979A - Aerosol generating device and heating assembly thereof

Info

Publication number: CN115119979A
Application number: CN202210788572.5A
Authority: CN
Inventors: 王守平; 赵鑫楠; 赵双; 孙来; 苏海悦; 孙利佳; 纪海新; 张进
Original assignee: Hainan Moore Brothers Technology Co Ltd
Current assignee: Hainan Moore Brothers Technology Co Ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-09-30
Also published as: WO2024007613A1

Abstract

The invention relates to an aerosol generating device and a heating component thereof, wherein the heating component comprises a heating core, a protective sleeve sleeved outside the heating core, and a first electrode and a second electrode which are respectively connected with the heating core. The heating core is conductive ceramic, the resistance stability is good, the whole heating core generates heat when the heating core is electrified, and the atomized matrix can be fully and quickly baked. Establish the protective sheath through at the heating core overcoat, can effectively improve heating element's bulk strength, promote the reliability in the heating element use, in addition, can also effectively protect heating element not receive foreign object's erosion, promote the electrical property stability in the heating element use.

Description

Aerosol generating device and heating assembly thereof

Technical Field

The invention relates to the field of atomization, in particular to an aerosol generating device and a heating component thereof.

Background

A heated non-combustible aerosol generating device heats an aerosol substrate by low temperature heating without combustion to produce an aerosol for inhalation by a user. The core component of the heating non-combustion type aerosol generating device is a heating component, and the heating mode of the existing heating component is generally tubular peripheral heating or central embedded heating. Tubular peripheral heating means that a heating element surrounds the atomized matrix to heat the atomized matrix, and central embedded heating means that the heating element is inserted into the atomized matrix to heat the atomized matrix. At present, the central embedded heating component is generally in a sheet shape or a needle shape, and the preparation method comprises the steps of screen printing a resistance heating circuit on a metal or ceramic substrate, and then covering a glaze layer for firing. When the two ends of the resistance heating circuit of the heating component are electrified, the heating component generates heat to bake the atomized substrate, and aerosol is generated for a user to suck.

The existing heating assembly has the following problems:

1. when the electric heating device is electrified, heat is only generated on the resistance heating circuit, the uniformity of a thermal field is poor, and the atomized matrix cannot be fully and effectively baked;

2. in order to ensure the stable resistance value in the using process, the materials used for printing the resistor heating circuit are mostly noble metal slurry, the material cost is high, and in addition, the environment pollution is easily caused by improper recovery after the service life of the product is over;

3. in order to ensure that the heating positions of the heating components in different batches are stable, the requirement on printing precision is high, and the manufacturing process is complex;

4. due to the limitation of the preparation method, the heating component is of a multilayer structure, the strength is not high, and the risk of fracture failure exists.

Disclosure of Invention

The present invention is directed to an improved heat generating assembly and an aerosol generating device having the same, which overcome the above-mentioned disadvantages of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: a heating assembly is constructed and used for heating atomized matrix, the heating assembly comprises a heating core, a protective sleeve sleeved outside the heating core, and a first electrode and a second electrode which are respectively connected with the heating core, and the heating core is conductive ceramic.

In some embodiments, the protective sleeve is made of a thermally conductive ceramic material.

In some embodiments, the protective sleeve has a uniform thermal conductivity.

In some embodiments, the protective sleeve has different thermal conductivities in its axial and/or circumferential directions.

In some embodiments, the heat generating core has a uniform resistivity.

In some embodiments, the heat generating core has different electrical resistivity in an axial direction and/or a circumferential direction thereof.

In some embodiments, the first electrode and the second electrode are respectively connected to both axial ends of the heat generating core.

In some embodiments, the heat generating core includes two dividing grooves extending from one end surface of the heat generating core and two heat generating portions divided by the two dividing grooves, and the first electrode and the second electrode are connected to the two heat generating portions, respectively.

In some embodiments, the heat generating assembly further includes a first conductive member having a ring shape, and the first electrode is connected to the heat generating core through the first conductive member.

In some embodiments, the heat generating assembly further includes a second conductive member having a ring shape, and the second electrode is connected to the heat generating core through the second conductive member.

In some embodiments, the outer surface of the heat generating component is a smooth surface.

In some embodiments, the heat generating core is cylindrical in shape, and the protective sleeve is tubular.

In some embodiments, the heat-generating component comprises a tapered head, via which the heat-generating component is configured to be inserted into the nebulized matrix.

In some embodiments, the first electrode and the second electrode are both wire electrodes.

In some embodiments, a through hole is formed through the heating core, and the heating assembly further includes a support rod passing through the through hole.

In some embodiments, the support rods are made of an insulating material or a conductive material.

In some embodiments, the heating assembly further includes a fixing seat, and a fixing hole for the protective sleeve to penetrate through is formed in the fixing seat.

The invention also provides an aerosol generating device which comprises the heating component.

The implementation of the invention has at least the following beneficial effects: the heating core is conductive ceramic, the resistance stability is good, the whole heating core generates heat when the power is on, and the atomized matrix can be fully and quickly baked; establish the protective sheath through at the heating core overcoat, can effectively improve heating element's bulk strength, promote the reliability in the heating element use, in addition, can also effectively protect heating element not receive foreign object's erosion, promote the electrical property stability in the heating element use.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic perspective view of a heating element according to a first embodiment of the present invention;

FIG. 2 is a schematic longitudinal sectional view of the heating element shown in FIG. 1;

FIG. 3 is an exploded view of the heating module shown in FIG. 1;

FIG. 4 is a schematic longitudinal sectional view of a heating element according to a second embodiment of the present invention;

FIG. 5 is a schematic longitudinal sectional view of a heat generating component according to a third embodiment of the present invention;

FIG. 6 is a schematic perspective view of a heating element in a fourth embodiment of the present invention;

FIG. 7 is a schematic longitudinal sectional view of the heater module shown in FIG. 6;

FIG. 8 is an exploded view of the heating element of FIG. 6;

figure 9 is a schematic perspective view of an aerosol generating device according to some embodiments of the present invention in use;

fig. 10 is a schematic longitudinal cross-sectional view of the aerosol generating device of fig. 9.

Detailed Description

For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "longitudinal," "axial," "length," "width," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings or the orientations and positional relationships in which the products of the present invention are conventionally placed during use, which are merely for convenience in describing and simplifying the present invention, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Fig. 1-3 show a heating element 10 according to a first embodiment of the present invention, the heating element 10 can be inserted into an atomizing substrate to bake and heat the atomizing substrate, and includes a heating core 12, a protective sleeve 11 covering the heating core 12, and a first electrode 141 and a second electrode 142 respectively connected to two poles of the heating core 12. When voltage is applied to the two poles of the heating core 12 through the first electrode 141 and the second electrode 142, current generates heat through the heating core 12, and the heating assembly 10 is enabled to bake the atomized substrate. In the present embodiment, the heat generating component 10 is needle-shaped. In other embodiments, the heat generating component 10 may have other shapes such as a sheet shape.

The heating core 12 is an integrated heating structure and has high structural strength. When the whole heating core 12 is electrified, the high-temperature section has a high occupation ratio in the thermal field, so that the atomized substrate can be fully and quickly baked, the aerosol can be generated quickly, and the aerosol has aromatic flavor. In addition, the resistance stability of the heating core 12 is good, the temperature field stability is good, the influence of external factors is not easy to be caused, and the suction experience with good consistency is ensured when the atomized substrate is replaced every time.

In some embodiments, the heater core 12 may be made of a conductive ceramic material. Specifically, the heating core 12 can be prepared by sintering the conductive ceramic material at a high temperature, and the heating core 12 prepared by sintering at a high temperature has a compact and compact structure, is not easy to damage, and has good resistance stability. The ceramic material is environment-friendly, pollution-free, free of heavy metal risks and extremely high in safety.

In addition, different types of heating requirements can be met by designing the conductive ceramic material with different conductive structures, for example, by designing the shape and/or resistivity of the conductive ceramic such that the heat-generating core 12 has different temperature field distributions to accommodate different types of atomized substrates. In the present embodiment, the heat generating core 12 has a cylindrical shape and has a uniform resistivity. The design ensures that the thermal field around the heating core 12 is the same, the atomized matrix is uniformly baked, the baking is full without dead zones, and the thermal field around the columnar heating core 12 does not have high temperature points, thereby ensuring that the aerosol has pure fragrance and no foreign flavor or scorched flavor. It is understood that in other embodiments, the heat generating core 12 can have other shapes such as a sheet shape. In other embodiments, the heat generating core 12 may also be made of conductive materials having different electrical resistivities, for example, the heat generating core 12 has different electrical resistivities in the axial and/or circumferential directions thereof.

Further, in some embodiments, the heater core 12 may be a cermet, which is a composite oxide of metal and ceramic, including a ceramic phase and a metal phase. The metal phase may be one of Ni, Fe, Cu, Co and stainless steel, or any combination (including alloys) therebetween. The metal phase does not contain precious metal materials and is therefore less costly. In other embodiments, the metallic phase may also include a precious metal material without regard to cost. The addition of the ceramic phase has two functions: firstly, the resistivity of the metal ceramic is regulated and controlled, and secondly, the mechanical property of the metal ceramic is improved. The ceramic phase can be one of alumina, zirconia, ceria, titania, manganese oxide, chromic oxide, ferric oxide, nickel oxide, yttrium oxide, lanthanum oxide, samarium oxide, niobium oxide, molybdenum oxide and zinc oxide or any combination thereof. The resistivity of the metal ceramic is related to the material components of the metal phase and the ceramic phase, the shapes of the respective powder bodies, the proportion of the metal phase and the ceramic phase, the sintering compactness and other parameters. The resistivity of the metal ceramic can be regulated and controlled by controlling related parameters.

Furthermore, proper element types and doping amounts can be selected to dope and replace the ceramic body material of the ceramic phase, so as to properly improve the structural stability and the mechanical property of the ceramic phase. For example, doping zirconium oxide with yttrium can improve the phase structure stability of zirconium oxide; the zirconium is adopted to dope the alumina, so that the toughness of the alumina can be improved. It is noted that any element and amount of doping substituted for the ceramic bulk material is within the scope of the present invention.

The protective sleeve 11 is sleeved outside the heating core 12 and has heat conduction performance, so that the overall strength of the heating assembly 10 can be increased while the heat transfer from the heating core 12 to the atomized matrix is not influenced, the heating assembly 10 is prevented from being broken in the cleaning process or accidentally falling and the like, and the use safety is improved; on the other hand, the heating core 12 can be effectively protected from being eroded by external substances (for example, smoke generated when the atomized substrate is heated, residual substances after the atomized substrate is heated, and the like), and the stability of the electrical performance of the heating assembly 10 in the using process is improved. In order to improve the heat transfer efficiency from the heat generating core 12 to the protective sleeve 11, the fit clearance between the heat generating core 12 and the protective sleeve 11 needs to be as small as possible. In some embodiments, a fit gap between the heating core 12 and the protective sleeve 11 may be filled with a heat conducting material such as glass frit, so as to improve the heat transfer efficiency.

In the present embodiment, the protective sheath 11 is in a circular tube shape, which can be made of an insulating ceramic material with high thermal conductivity, and the protective sheath 11 has uniform thermal conductivity in both the axial direction and the circumferential direction thereof. The ceramic material is environment-friendly and pollution-free, and the protective sleeve 11 can be directly contacted with the atomized matrix. Through the high heat-conducting property and the environmental protection performance of the protective sleeve 11, the temperature field of the heating component 10 is more uniform without high temperature points, and the flue gas is ensured to be pure and free from foreign flavor and scorched flavor. Furthermore, in other embodiments, the protective sleeve 11 can be made of ceramic materials with different thermal conductivities, for example, the protective sleeve 11 has different thermal conductivities in the axial direction and/or the circumferential direction, so that secondary adjustment of the temperature field distribution can be realized, and different baking tastes can be presented. In other embodiments, the protection sleeve 11 may also be made of a conductive material, and then the insulation between the protection sleeve 11 and the heat generating core 12 is achieved by disposing an insulating coating on the inner wall surface of the protection sleeve 11 and/or disposing an insulating coating on the outer wall surface of the heat generating core 12.

The outer surface of the heating component 10 is smooth so that the heating component 10 is easy to clean, the foreign flavor and the scorched smell generated by adhering soot on the outer surface during long-term use are reduced, and good use experience is brought to consumers. Specifically, the outer surface of the protective sheath 11 may be glazed or polished to improve its surface smoothness.

The first electrode 141 and the second electrode 142 are used for externally connecting an external power supply, thereby supplying power to the heat generating core 12. The first electrode 141 and the second electrode 142 have low resistivity, which may be electrode wires such as aluminum wires or silver wires in some embodiments. The first electrode 141 and the second electrode 142 can be directly conducted with the heat generating core 12 by coating conductive paste or soldering, or indirectly conducted with the heat generating core 12 by an intermediate conductive member. In this embodiment, the first electrode 141 and the second electrode 142 are respectively in direct conduction with two axial ends of the heating core 12, and the contact positions of the first electrode 141 and the second electrode 142 with the heating core 12 may be the end surface, the outer wall surface, or the inner wall surface of the heating core 12. When voltage is applied to the two ends of the heating core 12 in the axial direction through the first electrode 141 and the second electrode 142, current flows through the heating core 12 to generate heat, and baking and heating of the atomized matrix are realized. The input form of the electrodes at the two axial ends can ensure that the heating core 12 does not need to be slotted, thereby improving the heating uniformity and having good baking uniformity of the atomized matrix.

Further, in the present embodiment, the heat generating core 12 is tubular with a hollow interior, and a through hole 120 is formed therein in a longitudinal direction (i.e., an axial direction of the heat generating core 12) in a penetrating manner. The heating element 10 may further include a support rod 13 disposed through the through hole 120. The support rods 13 can enhance the overall strength of the heat generating component 10 and prevent the heat generating component 10 from being broken during use. The support rod 13 and the heating core 12 can be bonded and fixed by glass glaze or ceramic paint.

The supporting rod 13 includes a rod portion 131 and a head portion 132 disposed at an upper end of the rod portion 131. The rod portion 131 is received in the through hole 120, which may be cylindrical. The lower end surface of the rod portion 131 may be flush with the lower end surface of the heat generating core 12. The head 132 extends at least partially out of the through-hole 120 and the heat generating component 10 is inserted into the aerosol substrate via the head 132. Further, the head 132 may be rounded, e.g., sharpened, in order to reduce friction between the head 132 and the nebulized matrix to facilitate insertion of the head 132 into the nebulized matrix. Specifically, in the present embodiment, the head 132 has a conical shape or a circular truncated cone shape. The lower end of the head 132 and the upper end of the protection cover 11 may be bonded and fixed by glass glaze, ceramic paint, or the like, thereby forming a sealed space inside the protection cover 11. It is understood that in other embodiments, the supporting rod 13 may only include the rod portion 131, and the head portion 132 may also be formed on the protective sheath 11.

The support rod 13 may be made of a conductive material or an insulating material. In the present embodiment, the supporting rod 13 is made of an insulating material, which can be made of an insulating ceramic material such as zirconia ceramic. The first electrode 141 may extend along with the rod portion 131 and be electrically connected to the upper end of the heat generating core 12. Further, the shaft portion 131 can further form a routing channel 1310, and the routing channel 1310 can be used for routing the first electrode 141 and fixing the first electrode 141. Specifically, in the present embodiment, the routing channel 1310 may be formed on the outer surface of the rod portion 131, and may extend from the lower end of the rod portion 131 to the upper end of the rod portion 131 in the longitudinal direction. The support rod 13 with the first electrode 141 penetrates through the through hole 120 in the heating core 12, the support rod 13 and the heating core 12 can be bonded and fixed through glass glaze or ceramic paint, and the first electrode 141 and the upper end surface of the heating core 12 are electrically connected through coating conductive paste or soldering.

In order to prevent the first electrode 141 from contacting the inner wall of the heat generating core 12 to cause a short circuit, an insulating structure 1411 may be further provided between the first electrode 141 and the inner wall of the heat generating core 12. The structural form of the insulating structure 1411 is not limited. For example, the insulating structure 1411 may be a separately prepared insulating sleeve, such as a silicone sleeve or a plastic sleeve, through which the first electrode 141 is wrapped in the routing channel 1310. For another example, the insulating structure 1411 may also be an insulating coating disposed on the first electrode 141, which may be implemented by preparing an insulating coating on the first electrode 141 using an insulating material such as glass frit, ceramic material, or the like. In other embodiments, the trace path 1310 may also be formed inside the rod portion 131, and in this case, the rod portion 131 can achieve the purpose of preventing the first electrode 141 from contacting the inner wall of the heat generating core 12 to generate a short circuit without providing the insulating structure 1411.

In this embodiment, the second electrode 142 may be electrically connected to the outer wall surface of the lower end of the heat generating core 12 by conductive paste or soldering. The lower end of the protective sheath 11 has a slot 110 formed in a sidewall thereof, and the slot 110 can be used to limit the position of the second electrode 142 and provide an escape space for the second electrode 142. It is understood that, in other embodiments, the second electrode 142 may also be in communication with the inner wall surface of the lower end of the heat generating core 12 or the lower end surface of the heat generating core 12.

Further, the heating element 10 may further include a fixing base 15, and a fixing hole 150 for the protection cover 11 to pass through may be formed in the fixing base 15 along the longitudinal direction. The outer wall surface of the lower end of the protective sleeve 11 may be bonded and fixed to the wall surface of the fixing hole 150 by glass glaze or ceramic material. The fixing seat 15 can be contacted with other external components, so that the fixing and limiting of the whole heating component 10 are realized. In some embodiments, the fixing base 15 may be made of a high temperature resistant material such as ceramic or PEEK (polyetheretherketone).

Fig. 4 shows a heating element 10 in a second embodiment of the present invention, which is different from the first embodiment mainly in that the heating element 10 in this embodiment further includes a first conductive member 161 and a second conductive member 162, the first electrode 141 is connected to the heat generating core 12 through the first conductive member 161, and the second electrode 142 is connected to the heat generating core 12 through the second conductive member 162. The first and second

conductive members

161 and 162 each have a ring shape and have a lower resistivity than the heat generating core 12. The current in the first electrode 141 preferentially flows through the annular first conductive member 161, so that the contact conduction area between the first electrode 141 and the heat generating core 12 can be increased, and the connection stability between the first electrode 141 and the heat generating core 12 can be improved. The current in the second electrode 142 preferentially flows through the annular second conductive member 162, so that the contact conduction area between the second electrode 142 and the heat generating core 12 can be increased, and the connection stability between the second electrode 142 and the heat generating core 12 can be improved.

Specifically, in the present embodiment, the first conductive member 161 may be a ring-shaped metal short tube, which may be sleeved between the upper end outer wall surface of the rod portion 131 and the upper end inner wall surface of the heat generating core 12. The first electrode 141 is electrically connected to the first conductive member 161, and the outer wall surface of the first conductive member 161 is electrically connected to the inner wall surface of the upper end of the heat generating core 12. In other embodiments, when the first electrode 141 is connected to the upper end surface or the upper outer wall surface of the heat generating core 12, the shape and the installation position of the first conductive member 161 can be adjusted accordingly. For example, when the first electrode 141 is connected to the upper end surface of the heat generating core 12, the first conductive member 161 may be a ring-shaped metal sheet and sandwiched between the lower end surface of the head 132 and the upper end surface of the heat generating core 12; when the first electrode 141 is connected to the upper outer wall surface of the heating core 12, the first conductive member 161 may be an annular metal short tube and may be sleeved outside the upper end of the heating core 12.

The second conductive member 162 may be an annular metal short tube, which is sleeved outside the lower end of the heat generating core 12. The second electrode 142 is electrically connected to the outer wall surface of the second conductive member 162, and the inner wall surface of the second conductive member 162 is electrically connected to the outer wall surface of the lower end of the heat generating core 12. In other embodiments, when the second electrode 142 is connected to the inner wall surface or the lower end surface of the lower end of the heat generating core 12, the shape and the installation position of the second conductive member 162 can be adjusted accordingly.

Fig. 5 shows a heating element 10 according to a third embodiment of the present invention, which is different from the first embodiment mainly in that in the present embodiment, the support rod 13 of the heating element 10 is made of a conductive material such as metal. At this time, the first electrode 141 may be connected to the upper end of the heat generating core 12 through the support rod 13.

Specifically, in the present embodiment, the support rod 13 is directly conducted with the upper end of the heat generating core 12, and the contact conducting position of the support rod 13 and the upper end of the heat generating core 12 can be selected from the upper end surface and/or the inner wall surface of the upper end of the heat generating core 12. The rest positions of the support rod 13 which are not communicated with the heating core 12 need to be provided with insulating layers, so that the rest positions of the support rod 13 which are not communicated with the heating core 12 are prevented from contacting with the heating core 12 to cause short circuit. The first electrode 141 can be connected and conducted with the lower end of the supporting rod 13 by coating conductive paste or brazing, and the contact position where the first electrode 141 is connected with the lower end of the supporting rod 13 can be selected from the lower end surface or the lower end outer wall surface of the rod portion 131, so that a wiring channel for wiring the first electrode 141 is not required to be formed on the rod portion 131.

Fig. 6 to 8 show a heating element 10 in a fourth embodiment of the present invention, which is different from the first embodiment mainly in that in the present embodiment, a first electrode 141 and a second electrode 142 are respectively connected to two side walls of the lower end of the heating core 12. Two dividing grooves 121 are formed in the side wall of the heat generating core 12, each dividing groove 121 extending longitudinally upward from the lower end surface of the heat generating core 12 to the vicinity of the upper end of the heat generating core 12 without penetrating through the upper end surface of the heat generating core 12, thereby dividing the heat generating core 12 into two circumferentially spaced heat generating portions 122 and a connecting portion 123 connecting the upper ends of the two heat generating portions 122 together. The first electrode 141 and the second electrode 142 are connected to outer side walls of lower ends of the two heat generating portions 122, respectively, and the two heat generating portions 122 are connected to upper ends thereof by a connecting portion 123.

Two slots 110 are formed on the sidewall of the lower end of the protective cover 11, and the two slots 110 can be respectively used for limiting the positions of the first electrode 141 and the second electrode 142 and providing an avoidance space for the first electrode 141 and the second electrode 142. Further, in the present embodiment, the two dividing grooves 121 are symmetrically disposed with respect to the central axis of the heat generating core 12, the two heat generating portions 122 are symmetrically disposed with respect to the central axis of the heat generating core 12, and the two slots 110 are symmetrically disposed with respect to the central axis of the protective cover 11. The extension length of each dividing groove 121 is more than half of the length of the heat generating core 12. It is understood that, in other embodiments, the number of the dividing grooves 121, the heat generating portions 122, and the slots 110 is not limited to two, and may be more than two.

When the heating assembly 10 is assembled, the supporting rod 13 can be directly inserted into the heating core 12 and then integrally installed in the protective sleeve 11. The fit clearance between the support rod 13, the heating core 12 and the protective sleeve 11 needs to be as small as possible to improve the heat transfer efficiency. In some embodiments, the mating gap may be filled with a thermally conductive material such as glass frit.

It is understood that, in other embodiments, the contact positions of the first and

second electrodes

141 and 142 with the heat generating core 12 may also be the lower end inner wall surface or the lower end surface. In other embodiments, the contact positions of the first and

second electrodes

141 and 142 with the heat generating core 12 may be the upper end of the heat generating core 12, and accordingly, the dividing groove 121 extends from the upper end surface of the heat generating core 12 to the vicinity of the lower end of the heat generating core 12 in the longitudinal direction.

It is understood that the above embodiments are merely simplified models of the present invention, and structural improvements and component additions and subtractions may be made without departing from the technical principles of the present invention, and are within the scope of the present invention.

Further, it is to be noted that the structure of the heat generating core 12 of the present invention includes, but is not limited to, the two structural designs of the first embodiment and the fourth embodiment described above.

Fig. 9-10 illustrate an aerosol-generating device 100 according to some embodiments of the invention, the aerosol-generating device 100 being adapted to apply low-temperature baking heat to an aerosol-generating substrate 200 inserted therein to release an aerosol extract from the aerosol-generating substrate 200 in a non-combustible state. The aerosol-generating device 100 may be generally square-cylindrical, and the aerosol-generating substrate 200 may be cylindrical. The aerosol generating device 1000 may be removably inserted into the nebulizing substrate 200 to facilitate removal and replacement of a new nebulizing substrate 200 after heating has been completed. It is understood that in other embodiments, the aerosol generating device 100 is not limited to a square cylinder, but may have other shapes such as a cylinder, an elliptic cylinder, and the like.

The aerosol generating device 100 includes a case 30, and a heat generating element 10, a container 20, a battery 40, and a main board 50 housed in the case 30. The heat generating component 10 may be the heat generating component in any of the above embodiments.

The container 20 may be cylindrical, and its inner wall surface defines a receiving space 21 for receiving the aerosol substrate 200. The top wall of the housing 30 is provided with a socket 31 for inserting the nebulized substrate 200, and the nebulized substrate 200 can be inserted into the receiving space 21 via the socket 31. The upper end of the heating element 10 can be inserted into the receiving space 21 and inserted into the aerosol substrate 200 for heating and baking the aerosol substrate 200 after being electrified. The battery 40 is electrically connected to the motherboard 50 and the heat generating component 10, respectively, to supply power to the motherboard 50 and the heat generating component 10. The main board 50 has a control circuit disposed thereon, and the switch disposed on the housing 30 can control the connection and disconnection between the battery 40 and the heat generating component 10.

It is to be understood that the above-described respective technical features may be used in any combination without limitation.

The above examples only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

Claims

1. The heating component is used for heating atomized matrix and is characterized by comprising a heating core (12), a protective sleeve (11) sleeved outside the heating core (12), a first electrode (141) and a second electrode (142) which are respectively connected with the heating core (12), and the heating core (12) is made of conductive ceramic.

2. The heating element according to claim 1, characterized in that the protective sheath (11) is made of a thermally conductive ceramic material.

3. The heating element according to claim 1, characterized in that the protective sheath (11) has a uniform thermal conductivity.

4. The heating element according to claim 1, characterized in that the protective sleeve (11) has different thermal conductivities in its axial and/or circumferential direction.

5. The heat generating component according to claim 1, wherein the heat generating core (12) has a uniform resistivity.

6. The heat generating assembly according to claim 1, characterized in that the heat generating core (12) has different electrical resistivity in its axial and/or circumferential direction.

7. The heating element according to claim 1, wherein the first electrode (141) and the second electrode (142) are connected to both axial ends of the heating core (12), respectively.

8. The heat generating component according to claim 1, wherein the heat generating core (12) includes two dividing grooves (121) extending from one end face of the heat generating core (12) and two heat generating portions (122) divided by the two dividing grooves (121), and the first electrode (141) and the second electrode (142) are connected to the two heat generating portions (122), respectively.

9. The heat generating component according to claim 1, further comprising a first conductive member (161) in a ring shape, the first electrode (141) being connected to the heat generating core (12) through the first conductive member (161).

10. The heat generating assembly of claim 1, further comprising a second electrically conductive member (162) in the shape of a ring, wherein the second electrode (142) is connected to the heat generating core (12) through the second electrically conductive member (162).

11. The heat-generating component of claim 1, wherein the outer surface of the heat-generating component is a smooth surface.

12. The heating element according to claim 1, wherein the heating core (12) has a cylindrical shape and the protective sheath (11) has a circular tube shape.

13. The heat-generating component of claim 1, comprising a tapered head (132), the heat-generating component configured to be inserted into the aerosolized matrix via the tapered head (132).

14. The heating assembly according to claim 1, wherein the first electrode (141) and the second electrode (142) are both wire electrodes.

15. The heating assembly according to any one of claims 1 to 14, wherein a through hole (120) is formed through the heating core (12), and the heating assembly further comprises a support rod (13) disposed through the through hole (120).

16. The heating assembly according to claim 15, wherein the support rod (13) is made of an insulating material or a conductive material.

17. The heating assembly according to any one of claims 1 to 14, further comprising a fixing base (15), wherein a fixing hole (150) for the protective sheath (11) to pass through is formed in the fixing base (15).

18. An aerosol generating device comprising a heat generating component according to any one of claims 1 to 17.