Heat generating assembly and aerosol generating device

Abstract

A heating assembly (100) and an aerosol generating device (200), the heating assembly (100) including a substrate (20) and a conductive trace (30), the substrate (20) having a heating region (21), the conductive trace (30) disposed in the heating region (21), the substrate (20) and the conductive trace (30) being adapted to be at least partially inserted into an aerosol generating matrix so that the conductive trace (30) generates heat under an energized condition to heat the aerosol generating matrix, the conductive trace (30) being configured such that under an energized condition the conductive trace (30) forms at least two high temperature regions (31) in the heating region (21), thereby making the heating of the heating assembly more uniform and improving the user experience.

Description

[Technical field]

[0001] TECHNICAL FIELD This application relates to the technical field of atomization, and in particular to heat generating assemblies and aerosol generating devices. [Background technology]

[0002] The aerosol generating device is used to heat and atomize an aerosol generating matrix, for example, a solid matrix of plant leaves having a specific fragrance is baked in a heating non-combustion manner, so that the leaf-based solid matrix is ​​baked to form an aerosol.

[0003] Currently, most heating assemblies in aerosol generating devices heat the aerosol generating matrix through a central heating method.

[0004] However, conventional heating assemblies heat the aerosol-generating matrix unevenly, resulting in a poor user experience. Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above problems, the present application provides a heating assembly and an aerosol generating device to solve the problem in the prior art that the heating assembly heats non-uniformly and the user experience is not good. [Means for solving the problem]

[0006] In order to solve the above technical problems, the present application provides a heat generation assembly, the heat generation assembly including a substrate and a conductive trace, the substrate having a heat generation area, the conductive trace being disposed in the heat generation area, the substrate and the conductive trace being used to be at least partially inserted into an aerosol generating matrix so that the conductive trace generates heat under an energized condition to heat the aerosol generating matrix, and the conductive trace is configured such that under an energized condition, the conductive trace forms at least two high temperature areas in the heat generation area.

[0007] In one embodiment, the conductive traces are configured such that under an energized condition, the conductive traces form at least one high temperature region on either side of the heat generating region along the length of the substrate.

[0008] In one embodiment, the conductive trace comprises two sub-conductive traces, the two sub-conductive traces being arranged in series or parallel.

[0009] In one embodiment, the two sub-conductive traces are located on either side of a centerline of the substrate, and are symmetrically or asymmetrically located with respect to the centerline of the substrate.

[0010] In one embodiment, one of the sub-conductive traces is configured to form one high temperature region at one end of the heat generation region along the length of the substrate, and the other of the sub-conductive traces is configured to form one high temperature region at the other end of the heat generation region along the length of the substrate.

[0011] In one embodiment, the conductive trace is folded multiple times at locations corresponding to the high temperature regions.

[0012] In one embodiment, the substrate further includes a non-heat generating region where the conductive traces are not located, the heat generating region and the non-heat generating region being adjacently located along a longitudinal direction of the substrate, and a tip being formed at one end of the heat generating region away from the non-heat generating region.

[0013] In one embodiment, the heating assembly further includes a first electrode and a second electrode spaced apart in the non-heating region, adapted to be electrically connected to a power assembly, one of the first electrode and the second electrode being electrically connected to a first end of the conductive trace, and the other of the first electrode and the second electrode being electrically connected to a second end of the conductive trace.

[0014] In one embodiment, the heat generating assembly further includes a protective layer coated on the substrate and covering the conductive traces, the first electrode, and the second electrode.

[0015] In some embodiments, the substrate is an insulating substrate.

[0016] In some embodiments, the substrate includes a conductive substrate and an insulating layer disposed on a surface of the conductive substrate, the conductive traces being disposed on a side of the insulating layer away from the conductive substrate.

[0017] In order to solve the above technical problem, the present application further provides an aerosol generating device, the aerosol generating device including a housing, and a heating assembly and a power supply assembly installed in the housing, wherein the power supply assembly is electrically connected to the heating assembly and is used to supply power to the heating assembly, and the heating assembly is any one of the heating assemblies described above. Effect of the Invention

[0018] Different from the prior art, the heating assembly and aerosol generating device provided by the present application include a substrate and a conductive trace, the substrate having a heating region, the conductive trace is disposed on the heating region, and the substrate and the conductive trace are at least partially inserted into the aerosol generating matrix, so that the conductive trace generates heat under an energized condition and heats the aerosol generating matrix, wherein the conductive trace is disposed such that under an energized condition, the conductive trace forms at least two high temperature regions in the heating region, thereby making the heating of the heating assembly more uniform and improving the user's experience. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a structural schematic diagram of an aerosol generating device according to an embodiment of the present application. [Diagram 2]FIG. 2 is a cross-sectional view of an aerosol generating device according to an embodiment of the present application taken along a particular angle. [Diagram 3] FIG. 1 is a structural schematic diagram of an aerosol-generating product according to an embodiment of the present application. [Figure 4] FIG. 2 is a structural schematic diagram of a heat generating assembly according to an embodiment of the present application. [Diagram 5] FIG. 2 is an exploded view of a heat generating assembly according to an embodiment of the present application. [Figure 6] FIG. 2 is a structural schematic diagram of a bent portion of a conductive trace that forms a high temperature area in a heat generating region according to an embodiment of the present application. [Figure 7] FIG. 2 is a structural schematic diagram of a conductive trace according to an embodiment of the present application. [Figure 8] FIG. 2 is a structural schematic diagram of a conductive trace according to another embodiment of the present application. [Figure 9] FIG. 2 is a structural schematic diagram of a heat generating assembly according to another embodiment of the present application. [Figure 10] FIG. 13 is a structural schematic diagram of a heat generating assembly according to still another embodiment of the present application. [Figure 11] FIG. 13 is a structural schematic diagram of a heat generating assembly according to still another embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, the technical solutions of the embodiments of the present application will be described clearly and completely with reference to the drawings of the embodiments of the present application. It is understood that the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments of the present application, all other embodiments that a person skilled in the art can obtain without inventive work are all within the scope of protection of the present application.

[0021] The terms "first", "second" and "third" in this application are used for descriptive purposes only and should not be construed to indicate or imply relative importance or the number of technical features indicated. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include at least one of these features. In the description of this application, "multiple" means at least two, e.g., two, three, etc., unless otherwise clearly and specifically defined. All directional indications (up, down, left, right, front, back......) in the embodiments of this application are only used to describe the relative positional relationship between each component in a certain posture (as shown in the drawings), sports situation, etc., and when the specific posture changes, the directional indications change accordingly. Furthermore, the terms "including" and "having" and their variations are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device comprising a series of steps or units is not limited to the listed steps or units, but optionally includes unlisted steps or units, or optionally includes other steps or units, or other steps or units inherent to such process, method, product, or device.

[0022] Reference to an "embodiment" in this specification means that a particular feature, structure, or characteristic described in connection with that embodiment may be included in at least one embodiment of the present application. The appearance of this phrase in various places in this specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art can understand, either explicitly or implicitly, that the embodiments described herein can be combined with other embodiments.

[0023] 1 to 11, FIG. 1 is a structural schematic diagram of an aerosol generating device according to one embodiment of the present application, FIG. 2 is a cross-sectional view of an aerosol generating device according to one embodiment of the present application along a particular angle, FIG. 3 is a structural schematic diagram of an aerosol generating product according to one embodiment of the present application, FIG. 4 is a structural schematic diagram of a heat generating assembly according to one embodiment of the present application, FIG. 5 is an exploded view of a heat generating assembly according to one embodiment of the present application, FIG. 6 is a structural schematic diagram of a bent portion of a conductive trace forming a high temperature area in a heat generating area according to one embodiment of the present application, FIG. 7 is a structural schematic diagram of a conductive trace according to one embodiment of the present application, FIG. 8 is a structural schematic diagram of a conductive trace according to another embodiment of the present application, FIG. 9 is a structural schematic diagram of a heat generating assembly according to another embodiment of the present application, FIG. 10 is a structural schematic diagram of a heat generating assembly according to yet another embodiment of the present application, and FIG. 11 is a structural schematic diagram of a heat generating assembly according to yet another embodiment of the present application.

[0024] 1 and 2, the aerosol generating device 300 can be used to heat and atomize an aerosol-generating matrix. The aerosol generating device 300 can be used in various fields, such as medical atomization, cosmetic atomization, and recreational smoking. Specifically, the aerosol generating device 300 includes a housing 301, a heat generating assembly 100 and a power supply assembly 200 installed in the housing 301. The heat generating assembly 100 is used to heat and atomize an aerosol-generating matrix to form an aerosol. The power supply assembly 200 includes a battery 201, an airflow sensor (not shown), and a controller (not shown). The power supply assembly 200 is used to supply power to the heat generating assembly 100 and controls the operation of the heat generating assembly 100 to heat and atomize the aerosol-generating matrix to form an aerosol. Here, the airflow sensor is used to detect a change in airflow in the aerosol generating device 300, and the controller operates the battery 201 based on the change in airflow detected by the airflow sensor to supply power to the heat generating assembly 100. In another optional embodiment, there may be no airflow sensor and the controller activates the battery 201 to power the heat generating assembly 100 based on a control signal input by the user.

[0025] In one embodiment, the heat generating assembly 100 is at least partially inserted into the aerosol product 100. Specifically, the aerosol-generating product 10 includes a housing tube 11 and an aerosol-generating matrix disposed within the housing tube 11. Here, the aerosol-generating matrix may be a solid aerosol-generating matrix of plant leaves having a particular aroma. The housing tube 11 may be a cylindrical structure having multiple sections, in which the aerosol-generating matrix is ​​disposed within a first end of the housing tube 11 to form a matrix portion 12, and in a second end opposite the first end to form a filter portion 13, a hollow portion 14 is formed between the matrix portion 12 and the filter portion 13.

[0026] In one embodiment, the heat generating assembly 100 is at least partially inserted into the matrix section 12, and the matrix section 12 contains a solid aerosol-generating matrix, and the form of the solid aerosol-generating matrix is ​​not limited to an ordered solid aerosol-generating matrix, a disordered solid aerosol-generating matrix, and a particulate solid aerosol-generating matrix. The hollow section 14 can further contain a support material (not shown), and the hollow section 14 is used to collect the aerosol. The filter section 13 contains a filter material, and the filter section 13 is used to filter impurities in the aerosol. The support material and the filter material in the hollow section 14 and the filter section 13 include, but are not limited to, acetate fiber, polylactic acid fiber, polypropylene fiber, paper filter material, and the like. In one specific embodiment, the first end of the containment tube 11 is an open structure or has at least a through hole (not shown), through which the outside air and the heat generating assembly 100 can enter the aerosol-generating product 100.

[0027] In another embodiment, referring to FIG. 3, in order to prevent the temperature of the generated aerosol from being too high and affecting the user's experience, a cooling section 15 having a further cooling material is installed between the hollow section 14 and the filter section 13, and the cooling material includes, but is not limited to, polylactic acid and other phase change materials.

[0028] 4 to 6, in one embodiment, the heating assembly 100 includes a substrate 20 and a conductive trace 30, the substrate 20 having a heating region 21, and the conductive trace 30 disposed in the heating region 21. The substrate 20 and the conductive trace 30 are used to be at least partially inserted into an aerosol-generating matrix, so that the conductive trace 30 generates heat under an electric current condition and heats the aerosol-generating matrix. Here, the substrate 20 may be in the shape of a column or a sheet, and the material of the substrate 20 may be an insulating ceramic or an insulating metal. The material of the conductive trace 30 may be one or more of aluminum and its alloys, copper and its alloys, silver and its alloys, gold and its alloys, platinum and its alloys, iron and its alloys, nickel and its alloys, and titanium and its alloys, and the heating circuit is formed on the surface of the substrate 20 by a physical vapor deposition (e.g., magnetron sputtering, vacuum evaporation, ion plating) or chemical vapor deposition (ion-assisted chemical deposition, laser-assisted chemical vapor deposition, metal organic deposition). The conductive trace 30 may also be formed by printing and sintering a conductive paste.

[0029] The present inventors have found that the conventional heating assembly 100 generally has only one high temperature area 31 under energized condition, and the one high temperature area 31 is generally located near the tip of the heating assembly 100, which causes the heating assembly 100 to heat the aerosol-generating matrix non-uniformly, resulting in low heating effect and low generated aerosol content. To solve the above problem, the conductive trace 30 provided by the present application is configured such that, under energized condition, the conductive trace 30 forms at least two high temperature areas 31 in the heating area 21, so that the high temperature areas 31 of the heating assembly 100 are widely distributed, the heating effect is better, and it is favorable to improve the mouth feel and usage experience of the user.

[0030] As can be appreciated, the more resistive the material of the conductive trace 30 is, the more heat and higher the temperature will be generated when current is applied. In one embodiment, the conductive trace 30 includes at least two heating sections having different resistances, with the higher resistive heating section located in a position corresponding to the high temperature region 31. In another embodiment, the material of the conductive trace 30 includes at least two materials having different resistances, with the more resistive material located in a position corresponding to the high temperature region 31. Under current application conditions, the temperature generated in the high temperature region 31 will be higher than the temperature in other regions of the heat generation region 21.

[0031] For example, the conductive traces 30 form at least two high temperature areas 31 and multiple low temperature areas (not shown) in the heat generating area 21. The material of the conductive traces 30 includes silver and iron, where the resistance of the iron is greater than the resistance of the silver. The iron is disposed at the positions corresponding to the high temperature areas 31, and the silver is disposed at other positions in the heat generating area 21.

[0032] For example, the conductive traces 30 form at least two high temperature regions 31, a plurality of medium temperature regions (not shown) and a plurality of low temperature regions in the heat generating region 21. The materials of the conductive traces 30 include silver, gold and iron, where silver has the lowest resistance and iron has the highest resistance. The iron is placed at the positions corresponding to the high temperature regions 31, the gold is placed at the positions corresponding to the medium temperature regions, and the silver is placed at the positions corresponding to the low temperature regions.

[0033] It should be noted that the above-mentioned medium temperature region and low temperature region are merely illustrative. Specifically, the temperature at which the aerosol-generating matrix is ​​heated in the non-heating and non-combustion manner is usually 240°C to 350°C, the temperature of the above-mentioned high temperature region 31 is 330°C to 350°C, and the temperature of the low temperature region is 240°C or higher. That is, the temperatures of the medium temperature region and the low temperature region are 240°C to 330°C, and the temperature of the medium temperature region is higher than that of the low temperature region. Specifically, these can be set according to actual needs.

[0034] 5 to 8, in another embodiment, the conductive trace 30 includes only one material, and the conductive trace 30 is folded multiple times at a position corresponding to the high temperature region 31 to form a folded portion 32. Here, the shape of the conductive trace 30 in the region of the folded portion 32 may be at least one of an acute angle, a right angle, an obtuse angle, and an arc shape, or a combination thereof, and is not limited here. Specifically, the bending of the metal changes the resistance of the folded portion, which generally appears as an increase in resistance, so that under a current-carrying condition, the amount of heat generated at the folded portion 32 is large and the temperature is high, thereby forming the high temperature region 31 in the heat generating region 21.

[0035] In addition, since the distribution density of the conductive trace 30 in the bent portion 32 is greater than the distribution density of the conductive trace 30 in the unfolded area, under electrical current conditions, the bent portion 32 of the same unit area generates more heat and has a higher temperature than the unfolded area, thereby forming a high-temperature area 31 in the heat generation area 21.

[0036] 6, 9 and 10, in order to avoid the heating temperature of each region on the heating assembly 100 being uneven, for example, under an energized condition, the heating temperature of one end of the heating assembly 100 is high and the heating temperature of the other end is low, and during the user's inhalation process, the temperature of the high temperature region 31 becomes higher and the temperature of the low temperature region becomes lower, which may result in the risk of excessive heating and cause fatigue cracks and increased fatigue resistance of the conductive trace 30 in the high temperature region 31, shortening the service life. In one embodiment, in order to avoid this, under an energized condition, the conductive trace 30 is configured to form at least one high temperature region 31 at both ends of the heating region 21 along the longitudinal direction of the substrate 20, so that both the upper and lower ends of the heating region 21 can sufficiently heat the aerosol-generating matrix, so that the heating assembly 100 can uniformly, quickly and more fully heat and atomize the aerosol-generating matrix, while avoiding the risk of excessive heating, fatigue cracks of the conductive trace 30, and increased fatigue resistance.

[0037] 6, 9 and 10, in some embodiments, the conductive trace 30 includes two sub-conductive traces 33, which are arranged in series or in parallel, and both of the two sub-conductive traces 33 form at least one high temperature region 31 in the heat generating region 21.

[0038] In a specific embodiment, referring to FIG. 6 , each of the two sub-conductive traces 33 includes one connection end (not shown) and one free end 331, the connection ends of the two sub-conductive traces 33 are connected to each other, and the free ends 331 of the two sub-conductive traces 33 are used to electrically connect to the positive and negative poles of the power assembly 200.

[0039] In another specific embodiment, referring to FIG. 9, two sub-conductive traces 33 are connected end to end to form a circular conductive trace. Two extensions 332 are provided on the circular conductive trace, and the two extensions 332 are used to electrically connect with the positive and negative poles of the power supply assembly 200. Specifically, one extension 332 is provided at the bottom end of the circular conductive trace along the longitudinal direction of the substrate 20, and the other extension 332 is disposed at the top of the circular conductive trace along the longitudinal direction of the substrate 20, and extends from the other surface of the substrate 20 on which the sub-conductive trace 33 is not provided to the bottom end of the substrate 20. For example, it extends from the back surface of the surface on which the sub-conductive trace 33 is provided to the bottom end of the substrate 20.

[0040] As can be seen, referring to FIG. 10, in another parallel embodiment, the two extensions 332 are both disposed at the center of the sub-conductive trace 33 along the longitudinal direction of the substrate 20, and are disposed at an interval. For example, the two extensions 332 are extended from the other surface of the substrate 20 on which the sub-conductive trace 33 is not disposed to the bottom end of the substrate 20, and are used to electrically connect with the positive and negative poles of the power supply assembly 200. In some embodiments, referring to FIG. 6 and FIG. 11, the two sub-conductive traces 33 are disposed on both sides of the center line M of the substrate 20, respectively, and are disposed symmetrically or asymmetrically with respect to the center line M of the substrate 20. Here, the center line M of the substrate 20 represents the center line along the longitudinal direction of the substrate 20. By adjusting the positions of the two sub-conductive traces 33 on the substrate 20, the heating effect is better, and thus a good suction experience can be realized.

[0041] 6, the two sub-conductive traces 33 are disposed on both sides of the center line M of the substrate 20, respectively, and are disposed asymmetrically with respect to the center line M of the substrate 20. Each of the two sub-conductive traces 33 includes a bent portion 32 capable of forming a high temperature region 31 under an energized condition, and one of the bent portions 32 is disposed at a top end position of the substrate 20 offset from the center line M of the substrate 20 along the longitudinal direction of the substrate 20, and the other of the bent portion 32 is disposed at a bottom end position of the substrate 20 offset from the center line M of the substrate 20 along the longitudinal direction of the substrate 20. Specifically, one of the sub-conductive traces 33 forms a high temperature region 31 at one end of the heat generating region 21 along the longitudinal direction of the substrate 20, and the other of the sub-conductive traces 33 forms a high temperature region 31 at the other end of the heat generating region 21 along the longitudinal direction of the substrate 20, so that the heating assembly 100 can heat the aerosol-generating matrix more uniformly and achieve a better inhalation experience.

[0042] 11 , the two sub-conductive traces 33 are disposed on either side of the center line M of the substrate 20, respectively, and are disposed symmetrically with respect to the center line M of the substrate 20. Each of the two sub-conductive traces 33 includes a bent portion 32 that can form a high temperature region 31 under an energized condition, and the two bent portions 32 are disposed symmetrically with respect to the center line M of the substrate 20. Specifically, one of the sub-conductive traces 33 forms a high temperature region 31 on one side of the heat generation region 21, and the other of the sub-conductive traces 33 forms a high temperature region 31 on the other side of the heat generation region 21, so that the heat generation assembly 100 can more fully heat the aerosol-generating matrix, thereby achieving a better inhalation experience.

[0043] In one embodiment, the substrate 20 further includes a non-heat-generating region 22 (see FIG. 5 ) where the conductive traces 30 are not installed, and the heat-generating region 21 and the non-heat-generating region 22 are adjacently installed along the longitudinal direction of the substrate 20. Specifically, at least a part of the non-heat-generating region 22 is used to be fixedly connected to the housing 301, and a connection medium between the conductive traces 30 and the power supply assembly 200 is installed in the non-heat-generating region 22. Here, the connection medium may be a metal wire or a conductive coating for connecting the conductive traces 30 and the power supply assembly 200. It will be understood that due to the presence of the metal wire or the conductive coating, the non-heat-generating region 22 does not generate heat at all under a current-carrying condition, and a small amount of heat is still generated, but can be ignored.

[0044] In some embodiments, the heat generating assembly 100 further includes a mounting seat (not shown), which is fixedly connected to the heat generating assembly 100, thereby mounting the heat generating assembly 100 within the housing 301 via the mounting seat. Specifically, the material of the mounting seat may be an organic material or an inorganic material having a melting point of 160 degrees or higher. Specifically, the mounting seat is fixed to the heat generating assembly 100 by an engagement structure or an adhesive, which may be an adhesive that can withstand high temperatures.

[0045] In one embodiment, referring to FIG. 4, a tip 211 is formed at the end of the heating region 21 away from the non-heating region 22, thereby reducing resistance when the heating assembly 100 is inserted into the aerosol generating product 10.

[0046] 5, in one embodiment, the heating assembly 100 further includes a first electrode 34 and a second electrode 35 spaced apart from each other in the non-heating region 22, and the first electrode 34 and the second electrode 35 are used to electrically connect the conductive trace 30 to the power supply assembly 200. One of the first electrode 34 and the second electrode 35 is electrically connected to a first end of the conductive trace 30, and the other of the first electrode 34 and the second electrode 35 is electrically connected to a second end of the conductive trace 30. Specifically, when the conductive trace 30 is an open conductive trace 30 or two serially connected sub-conductive traces 33, one of the first electrode 34 and the second electrode 35 is electrically connected to one free end 331 of the conductive trace 30, and the other of the first electrode 34 and the second electrode 35 is electrically connected to the other free end 331 of the conductive trace 30. When the conductive trace 30 consists of two parallel-connected sub-conductive traces 33, one of the first electrode 34 and the second electrode 35 is electrically connected to one extension 332 of the annular conductive trace, and the other of the first electrode 34 and the second electrode 35 is electrically connected to the other extension 332 of the annular conductive trace. In this embodiment, both the first electrode 34 and the second electrode 35 are conductive lead wires.

[0047] 5, in one embodiment, the heating assembly 100 further includes a protective layer 36, which is coated on the substrate 20 and covers the conductive traces 30, the first electrode 34, and the second electrode 35 to prevent aerosols formed upon heating the aerosol-generating matrix from damaging the first electrode 34, the second electrode 35, and the conductive traces 30. Here, the protective layer 36 may be a glass glaze layer.

[0048] In a specific embodiment, the protective layer 36 is applied only to the surface of the substrate 20 on which the conductive traces 30, the first electrode 34, and the second electrode 35 are placed, thereby preventing the conductive traces 30, the first electrode 34, and the second electrode 35 from being damaged or falling off.

[0049] In another embodiment, the protective layer 36 can also cover the entire substrate 20, thereby protecting the entire heat generating assembly 100 and providing the heat generating assembly 100 with a smooth surface to further reduce resistance when the heat generating assembly 100 is inserted into the aerosol generating product 100.

[0050] In one embodiment, the substrate 20 is an insulating substrate, for example, the substrate 20 is a sheet-shaped insulating ceramic, and the conductive trace 30 is disposed on one surface of the insulating substrate. Here, the substrate 20 made of insulating ceramic may have a thermal conductivity of 4 to 18 W / (m·k), a bending strength of 600 MPa or more, a thermal stability of more than 450 degrees, and a fire resistance of more than 1450 degrees. Here, the substrate 20 may further be a ZTA material (zirconia-toughened alumina ceramic) or MTA (a composite of mullite and alumina).

[0051] In another embodiment, the substrate 20 may further include a conductive substrate 23 that is not insulated. For example, the substrate 20 may include a sheet-like metal substrate and an insulating layer 24 disposed on the surface of the metal substrate. The conductive traces 30 are disposed on the insulating layer 24 on the side away from the conductive substrate 23. The conductive traces 30 can increase the strength of the heating assembly 100, prevent bending or breaking of the heating assembly 100, and can diffuse the heat generated when the conductive traces 30 are energized to the aerosol-generating matrix in contact with the substrate 20, thereby improving the heat receiving uniformity of the aerosol-generating matrix. The material of the substrate 20 may further be a new composite zirconia material, which can retain and transfer the heat generated by the conductive traces 30, thereby improving the energy utilization rate of the heating assembly 100.

[0052] The above is an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by utilizing the contents of the specification and drawings of the present application, or directly or indirectly applicable to other related technical fields, is similarly included in the patent protection scope of the present application.

Claims

1. A heat generating assembly including a substrate and conductive traces, the substrate has a heat generating region; the conductive trace is disposed in the heat generating region, the substrate and the conductive trace are adapted to be at least partially inserted into the aerosol generating matrix such that the conductive trace generates heat under an energized condition to heat the aerosol generating matrix; 11. A heat generating assembly, comprising: a heat generating region that is electrically connected to the conductive traces; a heat generating region that is electrically connected to the conductive traces;

2. 2. The heat generating assembly of claim 1, wherein the conductive traces are configured such that under an energized condition, the conductive traces form at least one high temperature region on either side of the heat generating region along the length of the substrate.

3. The heat generating assembly of claim 1 , wherein the conductive trace includes two sub-conductive traces, the two sub-conductive traces being arranged in series or in parallel.

4. The heat generating assembly of claim 3 , wherein the two sub-conductive traces are respectively located on either side of the centerline of the substrate, and are located symmetrically or asymmetrically with respect to the centerline of the substrate.

5. 5. The heat generating assembly of claim 4, wherein one of the two sub-conductive traces is configured to form one of the high temperature areas at one end of the heat generating area along the longitudinal direction of the substrate, and the other of the two sub-conductive traces is configured to form one of the high temperature areas at the other end of the heat generating area along the longitudinal direction of the substrate.

6. The heat generating assembly of claim 1 , wherein the conductive traces corresponding to locations of hot areas are folded multiple times.

7. 2. The heat generating assembly of claim 1, wherein the substrate further includes a non-heat generating area where the conductive traces are not provided, the heat generating area and the non-heat generating area are adjacently provided along a longitudinal direction of the substrate, and a tip is formed at one end of the heat generating area away from the non-heat generating area.

8. 8. The heating assembly of claim 7, further comprising a first electrode and a second electrode spaced apart in the non-heating area, the first electrode and the second electrode being adapted to be electrically connected to a power supply assembly, one of the first electrode and the second electrode being electrically connected to a first end of the conductive trace, and the other of the first electrode and the second electrode being electrically connected to a second end of the conductive trace.

9. 10. The heat generating assembly of claim 8, further comprising a protective layer, the protective layer coated on the substrate and covering the conductive traces, the first electrode and the second electrode.

10. 2. The heat generating assembly of claim 1, wherein the substrate is an insulating substrate.

11. 2. The heat generating assembly of claim 1, wherein the substrate comprises a conductive substrate and an insulating layer disposed on a surface of the conductive substrate, the conductive traces being disposed on a side of the insulating layer away from the conductive substrate.

12. An aerosol generating device comprising a housing, a heating assembly and a power supply assembly installed within the housing, wherein the power supply assembly is electrically connected to the heating assembly and is used to supply power to the heating assembly, and the heating assembly is a heating assembly described in any one of claims 1 to 11.

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