Heat generating body and aerosol generating device

Abstract

This utility model discloses a heating element and an aerosol generating device. The heating element includes: a base, comprising a first base portion and a first heating element, the first heating element being disposed inside and / or on the surface of the first base portion; and a heating element, comprising a second base portion and a second heating element, the second base portion being fixed to the first base portion, and the second heating element being disposed inside and / or on the surface of the first base portion. The first base portion has a porous structure, which allows a liquid aerosol generating matrix to pass through and be heated by the first heating element. The heating element provided by this utility model can achieve more uniform and efficient three-dimensional heating, significantly improve the atomization amount, enhance the sensory experience, obtain a fuller and more layered flavor, and provides a flexible and adjustable heating strategy to adapt to diverse needs.

Description

Technical Field

[0001] This utility model relates to the field of smoking accessories technology, and in particular to a heating element and an aerosol generating device. Background Technology

[0002] Currently, heated tobacco products (HNB) are an important innovative category situated between traditional cigarettes and e-cigarettes. Their core principle lies in releasing nicotine and flavor compounds from specially formulated tobacco materials through precisely controlled low-temperature heating (typically between 250°C and 350°C) rather than direct combustion (which has an ignition point above 600°C). This method significantly reduces harmful components such as tar produced by high-temperature combustion.

[0003] Currently, one of the mainstream and advanced technological approaches in the industry is "core heating" technology. This technology involves directly inserting or tightly wrapping a heating element (usually made of metal or ceramic) into or around the core of the tobacco stick / cartridge for heating. Its working principle is that a precision circuit system rapidly heats the heating element to the target temperature range, causing the active ingredients in the tobacco material to volatilize and form an aerosol. Compared to external heating methods, core heating offers advantages such as high heating efficiency, low heat loss, compact product structure, ease of equipment miniaturization, and relatively low energy consumption. Furthermore, because heat is conducted from the center outwards, it theoretically allows for a more complete and coordinated release of tobacco flavor, enhancing sensory quality.

[0004] However, existing center-heating technologies still have significant drawbacks in practical applications. The core issue lies in the difficulty of achieving perfect heating uniformity. Because heat is transferred from the center heating element outwards, the temperature of the outer areas of the tobacco stick is significantly lower than that of the center. This temperature gradient prevents the outer tobacco material from being heated sufficiently and evenly, resulting in incomplete atomization and release of its aroma components. The direct consequences are insufficient overall atomization volume and sensory defects in taste, such as insufficient aroma fullness, a lack of flavor complexity, and a thin mouthfeel. This limits further improvement in the product experience and makes it difficult to meet the diverse needs of different consumers for smoke volume and aroma concentration.

[0005] Therefore, a heating solution is needed that can overcome the problems of insufficient atomization and flavor caused by uneven heating, and provide a more flexible user experience. Utility Model Content

[0006] This invention proposes an aerosol generating device to solve the above-mentioned problems.

[0007] In a first aspect, embodiments of this utility model disclose a heating element, comprising:

[0008] The base includes a first base portion and a first heating element, wherein the first heating element is disposed inside and / or on the surface of the first base portion;

[0009] The heating element includes a second base portion and a second heating element, wherein the second base portion is fixed to the first base portion, and the second heating element is disposed inside and / or on the surface of the first base portion;

[0010] The first substrate has a porous structure, which allows the liquid aerosol matrix to pass through and be heated by the first heating element.

[0011] By adopting the above technical solution, the heating element provided by the present invention can achieve more uniform and efficient three-dimensional heating, significantly improve the amount of atomization, improve the sensory experience, obtain a fuller and richer flavor, and provide a flexible and adjustable heating strategy to adapt to diversified needs.

[0012] According to another specific embodiment of the present invention, the porosity of the first substrate is 10%-75%.

[0013] According to another specific embodiment of the present invention, the porosity of the first substrate is 40%-60%.

[0014] According to another specific embodiment of the present invention, the average pore size of the porous structure is 1-5 μm.

[0015] According to another specific embodiment of the present invention, the first heating element and / or the second heating element are resistive circuit patterns made of conductive material for generating heat when energized; and / or, the resistive circuit patterns are linear, mesh-like, serpentine, or labyrinthine.

[0016] According to another specific embodiment of the present invention, the resistance of the first heating element is 0.1Ω-12Ω, and / or the resistance of the second heating element is 0.1Ω-12Ω.

[0017] According to another specific embodiment of the present invention, the resistance of the first heating element is 0.3Ω-1.5Ω; and / or, the resistance of the second heating element is 0.3Ω-1.5Ω.

[0018] According to another specific embodiment of the present invention, the cross-section of the heating element is circular, and the diameter of the circle is 1.9-2.3mm.

[0019] According to another specific embodiment of the present invention, the base and the heating element are separate structures or an integral structure; and / or the end of the heating element away from the base is pointed; and / or the first heating element extends circumferentially along the extension direction of the heating element.

[0020] According to another specific embodiment of the present invention, it further includes a first lead wire group, which is electrically connected to the first heating element; and / or a second lead wire group, which is electrically connected to the second heating element.

[0021] Secondly, embodiments of this utility model provide an aerosol generating apparatus, comprising:

[0022] The first substrate container is used to contain the aerosol generation substrate;

[0023] Storage chamber for storing the matrix generated from liquid aerosols;

[0024] In any of the embodiments of the first aspect, the heating element extends at least partially into the first matrix receiving chamber, the second heating element is used to generate matrix heating for the aerosol, the storage chamber is connected to the porous structure, and the first heating element is used to generate matrix heating for the air and / or liquid aerosol entering the porous structure.

[0025] By adopting the above technical solution, the aerosol generating device provided by the present invention can achieve more uniform and efficient three-dimensional heating, significantly improve the amount of atomization, improve the sensory experience, obtain a fuller and richer flavor, and provide a flexible and adjustable heating strategy to adapt to diversified needs.

[0026] Thirdly, embodiments of this utility model provide an aerosol generating device, comprising:

[0027] The second matrix containment chamber is used to contain the aerosol generation matrix;

[0028] In any of the embodiments of the first aspect described above, the heating element extends at least partially into the second matrix receiving chamber, and the second heating element is used to generate matrix heating for the aerosol.

[0029] An air chamber is located on the periphery of the base and is simultaneously connected to the second matrix containment chamber and the porous structure. A first heating element is used to heat the air in the air chamber. The heated air enters the second matrix containment chamber to conduct matrix heating of the aerosol.

[0030] By adopting the above technical solution, the aerosol generating device provided by the present invention can achieve more uniform and efficient three-dimensional heating, significantly improve the amount of atomization, improve the sensory experience, obtain a fuller and richer flavor, and provide a flexible and adjustable heating strategy to adapt to diversified needs. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the heating element and the base in the assembled state in the embodiment of this utility model;

[0032] Figure 2This is a schematic diagram showing the heating element and the base in a separated state in an embodiment of this utility model;

[0033] Figure 3 This is a schematic diagram of the aerosol generating device in the first embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the aerosol generating device in the second embodiment of the present invention;

[0035] Figure label:

[0036] Base 1; First base part 11; First heating element 12; Slot 13; First lead wire group 14; Heating element 2; Second base part 21; Second heating element 22; Insertion part 23; Second lead wire group 24; First matrix receiving chamber 3; Storage chamber 4; Second matrix receiving chamber 5; Air chamber 6; Aerosol generating matrix 7; Air inlet 8. Detailed Implementation

[0037] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0038] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0040] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0042] Firstly, reference Figure 1 , Figure 2 As shown, an embodiment of the present invention discloses a heating element, including: a base 1 and a heating element 2. The base 1 includes a first base portion 11 and a first heating element 12, the first heating element 12 being disposed inside and / or on the surface of the first base portion 11; the heating element 2 includes a second base portion 21 and a second heating element 22, the second base portion 21 being fixed to the first base portion 11, and the second heating element 22 being disposed inside and / or on the surface of the first base portion 11; the first base portion 11 has a porous structure (not shown in the figure), the porous structure allowing a liquid aerosol generating matrix to pass through and be heated by the first heating element 12.

[0043] Through the above methods, the heating element provided by the present invention can achieve more uniform and efficient three-dimensional heating, significantly improve the amount of atomization, improve the sensory experience, obtain a fuller and more layered flavor, and provide a flexible and adjustable heating strategy to adapt to diversified needs.

[0044] Specifically, by setting up independent heating elements 2 and fixing them to the base 1, the structure essentially creates multiple heating points / heating areas (first heating element 12 and second heating element 22) that can work independently or collaboratively. This allows heat to no longer diffuse from the center point to the periphery in a single manner, but to be released simultaneously or as needed from the central area where the base 1 is located and the middle or peripheral areas that the heating elements 2 may extend to. This breaks the radial temperature gradient of "overheating in the center and undercooling in the periphery" caused by traditional single-point core heating.

[0045] Furthermore, this uniform heating effect directly improves atomization performance and sensory experience. It allows more raw materials in the aerosol generating matrix to be simultaneously and fully heated to the target temperature, enabling more complete atomization and release of nicotine and flavor compounds. Therefore, it significantly increases the amount of aerosol generated per unit time (atomization volume), meeting consumers' demand for "large vapor clouds." Simultaneously, uniform heating ensures that flavor components at different locations on the cross-section of the aerosol generating matrix volatilize at suitable temperatures, resulting in a fuller, more layered flavor and enhancing the user's sensory experience. Moreover, this implementation method offers dual advantages in energy efficiency and structural design. On one hand, the coordinated operation of multiple heating points reduces energy waste caused by excessively raising the center temperature to increase the peripheral temperature, resulting in a shorter heat transfer path, less loss, and improved overall energy efficiency. On the other hand, the compact structure of the heating element provided by this embodiment facilitates the miniaturization and lightweight manufacturing of the aerosol generating device, achieving improved performance without excessively increasing size and process complexity.

[0046] Because the first heating element 12 and the second heating element 22 can be controlled independently or linked according to specific logic in the circuit, the heating program is provided with extremely high flexibility and programmability. The controller can dynamically adjust the power, heating sequence, and temperature curves of the two heating elements 12 and 22 according to different tobacco formulas, different consumer preferences (such as emphasizing strength or coolness), or different stages of the product's smoking process. For example, in the initial stage, simultaneous rapid heating can be achieved to meet the instant start-up requirements, and in the middle stage, the peripheral heating power can be adjusted to maintain flavor balance, realizing personalized sensory experience customization.

[0047] Furthermore, the first substrate 11 has a porous structure through which the liquid aerosol generation matrix can pass. Based on this porous structure, firstly, it optimizes heat transfer and distribution. Compared to a traditional solid substrate, which tends to cause heat accumulation in the area near the first heating element 12, the porous structure creates a composite system consisting of a continuous solid framework and dispersed pores. The heat generated by the first heating element 12 integrated inside or on its surface can be efficiently conducted through the solid framework, while simultaneously diffused within the air or liquid aerosol matrix through convection and conduction. This solid-gas / liquid composite heat transfer mode is significantly superior to the pure solid heat conduction of a single dense material, enabling faster and more uniform heat transfer from the heat source to the entire substrate (e.g., from the high-temperature zone in the center to the low-temperature zone on the periphery), balancing the temperature field inside the substrate 1, and improving the heating uniformity of the liquid aerosol generation matrix.

[0048] Building upon the achievement of uniform heating, this porous structure further enables precise management of the liquid matrix through its physical properties. Specifically, the porous structure can adsorb and store liquid aerosol generating matrices (such as propylene glycol, licorice, and tobacco extract), ensuring a sufficient amount of liquid aerosol matrix for continuous atomization during the heating cycle and increasing the atomization volume per use. Furthermore, the pore structure restricts the outward diffusion of the liquid, making the atomization process stable and controllable, avoiding problems such as instantaneous over-atomization or insufficient atomization. In addition, regardless of the pore morphology of the porous structure, the capillary force inherent in porous media can actively adsorb and guide the movement of the liquid matrix within the porous structure. This facilitates the uniform distribution of the liquid aerosol generating matrix within the matrix or its directional replenishment to the heating area before and during heating, preventing localized drying or oversaturation, thereby ensuring the stability and continuity of the atomization process.

[0049] In addition to the aforementioned heat and mass transfer functions, this porous structure also endows the first substrate 11 with multifunctional integrated characteristics. In other words, the first substrate 11 with a porous structure is no longer merely a support or heat-generating carrier, but a core component integrating multiple functions such as structural support, heat transfer, matrix storage and transport, and electrical insulation (e.g., using porous ceramics). This integrated design simplifies the overall structure and is conducive to product miniaturization and improved reliability.

[0050] Thanks to the synergistic effect of a uniform thermal field and a stable matrix, the sensory experience is significantly enhanced. Specifically, a more uniform thermal field means that tobacco or flavoring components in contact with the matrix can be heated under a more consistent temperature, which is conducive to the simultaneous volatilization of flavor substances with different boiling points in the designed proportions. This improves the fullness, layering, and purity of the aerosol flavor, and reduces the burnt taste caused by local overheating or the loss of flavor caused by local low temperatures. Furthermore, the smoke and aroma generated by heating the liquid aerosol matrix are combined with the smoke and aroma components generated by the aerosol matrix heated by the first heating element 12 through the same airflow path and are inhaled together, achieving the goal of increasing the total amount of smoke and aroma.

[0051] Furthermore, this porous structure also demonstrates advantages in terms of reliability and system optimization. On the one hand, suitable porous materials (such as porous ceramics or metals) possess good thermal stability and moderate mechanical strength, enabling them to withstand repeated thermal cycling shocks, and their porous morphology itself also has a certain stress buffering effect.

[0052] On the other hand, since the base 1 has direct contact with the air flowing through it before the air enters the heating element 2, it can preheat the air, thereby reducing the cooling effect of the air intake cooling on the heating element 2, reducing the temperature fluctuation of the heating element 2, and optimizing the heating stability.

[0053] In summary, this invention establishes a collaborative and mutually reinforcing heating and atomization system by deeply coupling the material properties of the porous first substrate 11 with independent multiple heating elements. This overcomes the limitations of a single technical approach and achieves a synergistic leap in uniform heating, efficient atomization, flavor optimization, and energy consumption reduction.

[0054] In the above embodiment, the first heating element 12 may be located on the surface of the first base portion 11 or inside the first base portion 11, and the second heating element 22 may be located on the surface of the second base portion 21 or inside the second base portion 21. This embodiment does not limit this.

[0055] In the above embodiments, the parameters of the porous structure (such as porosity, pore size distribution, and material) can be designed as needed. By adjusting these parameters, key performance characteristics such as liquid storage capacity, thermal conductivity, mechanical strength, and heat capacity can be flexibly balanced and optimized without changing the basic structure, in order to adapt to different atomization requirements or product specifications.

[0056] In the above embodiments, the first substrate 11 is made of porous ceramic, and is not limited to porous zirconium dioxide (ZrO2), alumina (Al2O3) or other composite ceramic materials.

[0057] In the above embodiment, the porosity of the first substrate 11 is 10%-75%. By limiting the porosity to this range, it is ensured that the first substrate 11 has sufficient pores to accommodate the liquid matrix while maintaining sufficient structural strength. Preferably, the porosity of the first substrate 11 is 40%-60%. By limiting the porosity to this range, a better balance can be struck between storage capacity, structural strength, and thermal conductivity. This ensures sufficient matrix is ​​stored to guarantee atomization volume while avoiding excessive porosity that could lead to structural fragility or excessive heat capacity and slow heating.

[0058] In the above embodiments, the average pore size of the porous structure is 1-5 μm.

[0059] In this embodiment, the micron-sized pore size allows the porous structure to effectively adsorb and uniformly lock in the liquid aerosol matrix through capillary action, preventing it from migrating due to gravity or "dry burning" before or during heating. Simultaneously, the pore size facilitates efficient heat transfer to the liquid, promoting uniform atomization.

[0060] In the above embodiments, the materials used for the second substrate 21 are not limited to ceramics (such as alumina Al2O3, aluminum nitride AlN) and metals (such as stainless steel, special alloys).

[0061] In the above embodiments, the first heating element 12 is a resistive circuit pattern made of conductive material for generating heat when energized. The conductive heating material used in the first heating element 12 is not limited to metals such as nickel-chromium alloy, iron-chromium-aluminum alloy, stainless steel, or pure silver (Ag). Technicians can select a suitable conductive heating material as needed. The first heating element 12 can be attached to the surface of the first substrate 11 or embedded inside the first substrate 11 using printing or plating techniques; this embodiment of the invention does not impose any limitations on this.

[0062] In the above embodiments, the resistive circuit pattern corresponding to the first heating element 12 is linear, mesh-like, serpentine, or labyrinthine. By arranging the conductive heating material in a specific pattern, the distribution of the heat source can be precisely controlled. For example, a mesh or labyrinthine pattern can achieve an extremely uniform heat field on a plane, avoiding local overheating or undercooling, and improving the uniformity and controllability of heating.

[0063] In the above embodiment, the resistance of the first heating element 12 is 0.1Ω-12Ω. This resistance range is a result of matching the supply voltage (typically 3.0V-4.2V) and desired power (typically 5W-15W) of commonly used small batteries (such as lithium batteries). According to P = V² / R, this resistance range ensures that appropriate heating power is obtained under safe voltage, promoting aerosol generation. Preferably, the resistance of the first heating element 12 is 0.3Ω-1.5Ω. If the resistance of the first heating element 12 is too low, a large current is required, which puts a heavy burden on the battery and easily leads to overheating; if the resistance is too high, the heating is slow and the power is insufficient. This preferred range balances heating efficiency, safety, and product performance in miniaturized devices. Specifically, the resistance of the first heating element 12 can be 0.3-0.5Ω, 0.5-0.8Ω, 0.8-1.2Ω, and 1.2-1.5Ω.

[0064] In the above embodiment, the second heating element 22 is a resistive circuit pattern made of conductive material for heating by electricity. Specifically, the material that can be used for the second heating element 22 is not limited to pastes made of high-temperature resistant metal materials such as platinum (Pt), nickel-chromium alloy, and iron-chromium-aluminum alloy. It can be formed by using electric heating techniques such as coating sintering, pre-embedded heating parts, and overall electric heating, printing the metal paste into a specific circuit pattern on the second substrate 21, and then sintering it at high temperature.

[0065] In the above embodiments, the resistive circuit pattern corresponding to the second heating element 22 is linear, mesh-like, serpentine, or labyrinthine. By arranging the conductive heating material in a specific pattern, the distribution of the heat source can be precisely controlled. For example, a mesh or labyrinthine pattern can achieve an extremely uniform heat field on a plane, avoiding local overheating or undercooling, and improving the uniformity and controllability of heating.

[0066] In the above embodiment, the resistance of the second heating element 22 is 0.1Ω-12Ω. This resistance range is a result of matching the supply voltage (typically 3.0V-4.2V) and desired power (typically 5W-15W) of commonly used small batteries (such as lithium batteries). According to P = V² / R, this resistance range ensures that appropriate heating power is obtained under safe voltage, promoting aerosol generation. Preferably, the resistance of the second heating element 22 is 0.3Ω-1.5Ω. If the resistance of the first heating element 12 is too low, a large current is required, which puts a heavy burden on the battery and easily leads to overheating; if the resistance is too high, the heating is slow and the power is insufficient. This preferred range balances heating efficiency, safety, and product performance in miniaturized devices. Specifically, the resistance of the second heating element 22 can be 0.3-0.5Ω, 0.5-0.8Ω, 0.8-1.2Ω, and 1.2-1.5Ω.

[0067] In the above embodiments, the resistance value of the first heating element 12 and the resistance value of the second heating element 22 may be the same or different. Technicians can design according to their needs, and this embodiment does not impose any restrictions on this.

[0068] In the above embodiment, the heating element 2 has a circular cross-section with a diameter of 1.9-2.3 mm. In this embodiment, by limiting the diameter of the heating element 2 to the above range, it matches the insertion and removal hole diameter of the mainstream heated non-combustible aerosol generating matrix, ensuring that the heating element 2 can make full and close contact with the aerosol generating matrix, maximizing the heat conduction area, while facilitating user insertion and removal, providing a good user experience and mechanical compatibility.

[0069] In some embodiments, the cross-section of the heating element 2 is not limited to a circle, but may also be rectangular, triangular or other shapes. This embodiment does not limit this.

[0070] In the above embodiments, the base 1 and the heating element 2 are either separate structures or an integrated structure.

[0071] In this embodiment, by designing the base 1 and the heating element 2 as separate structures, it is easier to manufacture independently, select materials, and assemble them later. For example, the base 1 can be made of high thermal conductivity ceramic, and the heating element 2 can be made of a specific metal, which improves design flexibility and maintainability. In this embodiment, the base 1 and the heating element 2 are separate structures. The base 1 is provided with a slot 13 for inserting the heating element 2, and the heating element 2 is provided with a corresponding insertion part 23. By filling the slot 13 with high-temperature adhesive, the heating element 2 and the base 1 can be bonded together. The high-temperature adhesive is not limited to ceramic glue, glass glue, etc. In some embodiments, the fixing of the base 1 and the heating element 2 is not limited to insertion and adhesive methods, and this embodiment of the present invention does not limit this.

[0072] By designing the base 1 and the heating element 2 as an integrated structure, the connection interface is reduced, the heat conduction efficiency is higher, the structure is more stable, the sealing is better, and it is conducive to mass production. Technicians can choose a separate or integrated structure as needed, and this utility model embodiment does not limit this.

[0073] In the above embodiment, the end of the heating element 2 furthest from the base 1 is pointed. This pointed structure facilitates smooth insertion of the heating element 2 into the aerosol generating matrix, reduces resistance, prevents damage to the tobacco material structure, and improves user convenience. The volume and heat capacity of the pointed structure are typically much smaller than those of a flat head. Therefore, it reaches its operating temperature more quickly when powered on and cools down more quickly after power is off, improving response speed and control accuracy.

[0074] In the above embodiment, the first heating element 12 extends circumferentially along the extending direction of the heating element 2. In this embodiment, the first heating element 12 extends circumferentially along the extending direction of the heating element 2, so that the base 1 itself (and its first heating element 12) can directly and effectively heat the aerosol generating matrix in a region closer to the periphery, which is beneficial to improving radial heating uniformity.

[0075] In the above embodiments, an insulating coating (not shown in the figure) is also included, disposed on the surface of the heating element 2. The insulating coating provides electrical insulation, prevents short circuits, and improves the reliability of the heating element. Specifically, the insulating coating is not limited to non-stick coatings such as Teflon or dense ceramic glaze coatings. Those skilled in the art can select a suitable insulating coating as needed, and this embodiment of the invention does not impose any limitations on this.

[0076] In the above embodiment, the heating element further includes a first lead group 14, which is electrically connected to the first heating element 12. Connecting the first heating element 12 to an external power source via the first lead group is simple, convenient, and reduces the difficulty of processing.

[0077] In the above embodiment, the heating element also includes a second lead group 24, which is electrically connected to the second heating element 22. Connecting the second heating element 22 to an external power source via the second lead group is simple, convenient, and reduces processing difficulty. By independently connecting the first heating element 12 and the second heating element 22, different currents and voltages can be applied to the first heating element 12 and the second heating element 22, controlling them to operate at the same or different power levels and at the same or different time periods. This allows for the realization of complex heating curves (such as coordinated heating of the center and peripheral zones), solving the technical problem of uneven heating and optimizing flavor release.

[0078] Secondly, such as Figure 3 As shown, this utility model provides an aerosol generating device, comprising:

[0079] The first matrix receiving chamber 3, the storage chamber 4, and the heating element provided in the above embodiments are provided. The first matrix receiving chamber 3 is used to receive the aerosol generating matrix 7, and the storage chamber 4 is used to store the liquid aerosol generating matrix (not shown in the figure). The heating element 2 extends at least partially into the first matrix receiving chamber 3, and the second heating element 22 is used to heat the aerosol generating matrix. The storage chamber 4 is connected to the porous structure, and the first heating element 12 is used to heat the air and / or liquid aerosol generating matrix that enters the porous structure.

[0080] Through the above methods, the aerosol generating device provided by the present invention can achieve more uniform and efficient three-dimensional heating, significantly improve the amount of atomization, improve the sensory experience, obtain a fuller and richer flavor, and provide a flexible and adjustable heating strategy to adapt to diversified needs.

[0081] In this embodiment, the aerosol generating matrix is ​​the core material in heated non-combustible tobacco products or electronic atomization products, which, upon heating, can generate aerosols containing nicotine and flavor substances. The first matrix container 3 primarily contains solid aerosol generating matrices, such as reconstituted tobacco sheets or thickened tobacco sheets. Liquid aerosol generating matrices, also known as "e-liquid" or "e-liquid," are typically composed of propylene glycol, glycerol, nicotine, and flavorings. Figure 3 The air intake arrow shown illustrates the airflow path (generally flowing from bottom to top). Air enters the base 1, is heated by the first heating element 12, and then passes through the gap between the heating element 2 and the corresponding assembly structure into the first matrix receiving chamber 3. Curved arrow A indicates the flow path of the liquid aerosol generating matrix. The liquid aerosol generating matrix in the storage chamber 4 enters the base 1 under gravity and is heated by the first heating element 12 to generate aerosol. The aerosol flows along the gap between the heating element 2 and the corresponding assembly structure into the first matrix receiving chamber 3 and is then drawn in by the user.

[0082] In the above embodiment, the aerosol generating device further includes: a resistance detection element (not shown in the figure) and a controller (not shown in the figure), used to detect the resistance values ​​of the first heating element 12 and the second heating element 22. The controller is electrically connected to the resistance detection element and is configured to adjust the applied voltage or current to the first heating element 12 and the second heating element 22 according to their resistance values ​​to regulate the temperature of the heating element. The specific resistance detection method can be based on existing technology (such as TCR (Temperature Coefficient of Resistance) temperature control) to achieve real-time temperature control. This embodiment does not limit this aspect.

[0083] Thirdly, such as Figure 4 As shown, this utility model provides an aerosol generating device, comprising:

[0084] The second matrix receiving chamber 5, the air chamber 6, and the heating element provided in the above embodiment are provided. The second matrix receiving chamber 5 is used to receive the aerosol generating matrix 7. The heating element 2 extends at least partially into the second matrix receiving chamber 5. The second heating element 22 is used to heat the aerosol generating matrix. The air chamber 6 is located on the periphery of the base 1 and is simultaneously connected to the second matrix receiving chamber 5 and the porous structure. The first heating element 12 is used to heat the air in the air chamber 6. The heated air enters the second matrix receiving chamber 5.

[0085] In this embodiment, the aerosol generating matrix is ​​the core material in heated non-combustible tobacco products or electronic atomization products, which can generate aerosols containing nicotine and flavor substances through heating. The second matrix containing chamber 5 mainly contains solid aerosol generating matrices, such as reconstituted tobacco sheets or thickened tobacco sheets.

[0086] Through the above methods, the aerosol generating device provided by the present invention can achieve more uniform and efficient three-dimensional heating, significantly improve the amount of atomization, improve the sensory experience, obtain a fuller and richer flavor, and provide a flexible and adjustable heating strategy to adapt to diversified needs.

[0087] In the above embodiments, "air chamber 6 is located around the base 1" means that the air chamber 6 can be located on the upper, lower, left, right, front, or rear side of the base 1, i.e., the air chamber 6 can be arranged around the base 1, so that the heat generated by the base 1 can be absorbed by the surrounding air, improving the heat utilization rate. "Heating element 2 at least partially extends into the second matrix receiving chamber 5" specifically means that the heating element 2 can partially extend into the second matrix receiving chamber 5 and partially extend out of the second matrix receiving chamber 5. In the above embodiments, the aerosol generating device also includes an air inlet 8, which is connected to the air chamber 6. Air enters the air chamber 6 through the air inlet 8 and is heated by the base 1. The heated air then flows along the heating element 2 into the second matrix receiving chamber 5. Figure 4 The middle arrow indicates the path of airflow.

[0088] In the above embodiments, the first substrate receiving chamber 3 and the storage chamber 4 can be coaxially fitted together, such as the storage chamber 4 being fitted outside the first substrate receiving chamber 3. This embodiment does not limit this.

[0089] In the above embodiment, the aerosol generating device further includes: a resistance detection element (not shown in the figure) and a controller (not shown in the figure), used to detect the resistance values ​​of the first heating element 12 and the second heating element 22. The controller is electrically connected to the resistance detection element and is configured to adjust the applied voltage or current to the first heating element 12 and the second heating element 22 according to their resistance values ​​to regulate the temperature of the heating element. The specific resistance detection method can be based on existing technology (such as TCR (Temperature Coefficient of Resistance) temperature control) to achieve real-time temperature control. This embodiment does not limit this aspect.

[0090] Alternatively, the heating element 2 can also be an electromagnetic heating element; the second heating element 22 can also be replaced by an electromagnetic heating element.

[0091] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A heat generating body, characterized by comprising: include: The base includes a first base portion and a first heating element, wherein the first heating element is disposed inside and / or on the surface of the first base portion; A heating element includes a second base portion and a second heating element, wherein the second base portion is fixed to the first base portion, and the second heating element is disposed inside and / or on the surface of the first base portion; The first substrate has a porous structure, which allows the liquid aerosol matrix to pass through and be heated by the first heating element.

2. The heat generating body according to claim 1, characterized by The porosity of the first substrate is 10%-75%.

3. The heat generating body according to claim 2, characterized by The porosity of the first matrix portion is 40%-60%.

4. The heat generating body according to claim 1, characterized by The average pore size of the porous structure is 1-5 μm.

5. The heat generating body according to claim 1, wherein The first heating element and / or the second heating element are resistive circuit patterns made of conductive material for generating heat when energized; and / or, The resistive circuit pattern is linear, mesh-like, serpentine, or labyrinthine.

6. The heat generating body according to claim 5, wherein The resistance of the first heating element is 0.1Ω-12Ω, and / or the resistance of the second heating element is 0.1Ω-12Ω.

7. The heat generating body according to claim 5, wherein The resistance of the first heating element is 0.3Ω-1.5Ω; and / or the resistance of the second heating element is 0.3Ω-1.5Ω.

8. The heat generating body according to claim 1, wherein The heating element has a circular cross-section with a diameter of 1.9-2.3 mm.

9. The heat generating body according to claim 1, wherein The base and the heating element are either separate or integrated; and / or the end of the heating element away from the base is pointed; and / or the first heating element extends circumferentially along the extension direction of the heating element.

10. The heat generating body according to claim 5, wherein It also includes a first lead group, which is electrically connected to the first heating element; and / or a second lead group, which is electrically connected to the second heating element.

11. An aerosol generating device, characterized in that, include: The first substrate container is used to contain the aerosol generation substrate; Storage chamber for storing the matrix generated from liquid aerosols; The heating element according to any one of claims 1 to 10, wherein the heating element extends at least partially into the first matrix receiving chamber, the second heating element is used to generate matrix heating of the aerosol, the storage chamber is in communication with the porous structure, and the first heating element is used to generate matrix heating of air and / or liquid aerosol entering the porous structure.

12. An aerosol-generating device comprising: include: The second matrix containment chamber is used to contain the aerosol generation matrix; The heating element of any one of claims 1 to 10, wherein the heating element extends at least partially into the second matrix receiving chamber, and the second heating element is used to generate matrix heating for the aerosol; An air chamber is located on the periphery of the base and is simultaneously connected to the second matrix containment chamber and the porous structure. The first heating element is used to heat the air in the air chamber, and the heated air enters the second matrix containment chamber to conduct matrix heating on the aerosol.

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