Heating tube and heat-not-burn atomization device

Abstract

The application relates to a heating tube and a heating non-combustion atomization device, and belongs to the atomization technical field. The heating tube comprises a base pipe, a first heating sheet, a second heating sheet and a third heating sheet. The base pipe is used for containing aerosol substrate. The base pipe has an air inlet section and an air outlet section arranged oppositely, and a main body section connected between the air inlet section and the air outlet section. The first heating sheet is arranged on the air inlet section. The second heating sheet is arranged on the air outlet section. The third heating sheet is arranged on the main body section. The unit length heating power of the first heating sheet and / or the second heating sheet is greater than that of the third heating sheet. By arranging the heating sheets with different unit length heating powers, the spatial differentiation configuration of the heating performance of the heating tube is realized, the heat source distribution uniformity is improved, the manufacturing difficulty is reduced, and therefore, the response speed and release quality of the aerosol are improved, and the yield and consistency of the product are improved.

Description

Technical Field

[0001] This application relates to the field of atomization technology, and in particular to a heating element and a heating non-combustible atomization device. Background Technology

[0002] Heated non-combustible atomizing devices are electronic devices that release volatile components to form aerosols by controlling the heating of an aerosol matrix instead of combustion. They are widely used in the field of novel non-combustible aerosol generation products. In these devices, the heating element is the core component, and its performance directly affects the efficiency, quality, and user experience of aerosol generation. The heating element typically includes a base tube that supports the aerosol matrix and heating elements mounted on its outer wall. Its main function is to efficiently and uniformly heat the aerosol matrix to ensure stable aerosol release at a set temperature.

[0003] In related technologies, to compensate for heat loss in the air inlet and outlet sections of the heating element due to heat exchange between the end areas and the outside air, some solutions employ a method of winding the heating wire more densely in these areas and less densely in the main body section to improve the heating capacity of the end areas. However, this approach has some limitations: on the one hand, the difference in winding density in different areas leads to uneven heat source distribution, which can easily affect the overall heating uniformity; on the other hand, multiple winding densities increase manufacturing difficulty and are detrimental to product yield and batch-to-batch consistency. Utility Model Content

[0004] This application provides a heating element and a heated non-combustible atomizing device, which improves the uniformity of heat source distribution and reduces manufacturing difficulty. This improves the aerosol response speed and release quality, while also increasing the product yield and consistency, thus at least partially solving the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a heating element is provided, comprising:

[0006] A base tube for containing an aerosol matrix, the base tube having an inlet section and an outlet section disposed opposite to each other, and a main body section connecting the inlet section and the outlet section;

[0007] The first heating element is located in the air intake section;

[0008] A second heating element is located in the air outlet section;

[0009] The third heating element is located in the main body section;

[0010] Wherein, the heating power per unit length of the first heating element and / or the second heating element is greater than the heating power per unit length of the third heating element.

[0011] In one embodiment, the heating element further includes a connector disposed on the main body section, the connector being electrically connected to the first heating element and the second heating element.

[0012] In one embodiment, the connector includes a conductor line electrically connected between the first heating element and the second heating element;

[0013] Alternatively, the connector may include a fourth heating element, which is integrally formed with the first heating element and the second heating element.

[0014] In one embodiment, the connector extends axially along the body segment.

[0015] In one embodiment, the first heating element extends circumferentially along the air intake section; and / or,

[0016] The second heating element extends circumferentially along the air outlet section; and / or,

[0017] The third heating element extends circumferentially along the main body segment.

[0018] In one embodiment, the first heating element includes a plurality of first heating segments, each first heating segment extending circumferentially along the air intake segment, and the plurality of first heating segments being spaced apart axially along the air intake segment; and / or,

[0019] The second heating element includes a plurality of second heating segments, each second heating segment extending circumferentially along the air outlet segment, and the plurality of second heating segments being spaced apart axially along the air outlet segment; and / or,

[0020] The third heating element includes multiple third heating segments, each of which extends circumferentially along the main body segment, and the multiple third heating segments are spaced apart axially along the main body segment.

[0021] In one embodiment, the first heating element, the second heating element, and the third heating element are arranged in series;

[0022] Wherein, the resistivity of at least one of the first heating element and the second heating element is greater than the resistivity of the third heating element; and / or, the cross-sectional area of ​​at least one of the first heating element and the second heating element is smaller than the cross-sectional area of ​​the third heating element.

[0023] In one embodiment, the first heating element and the second heating element are connected in series, and the first heating element and the second heating element connected in series are arranged in parallel with the third heating element;

[0024] Wherein, the resistivity of at least one of the first heating element and the second heating element is less than the resistivity of the third heating element; and / or, the cross-sectional area of ​​at least one of the first heating element and the second heating element is greater than the cross-sectional area of ​​the third heating element.

[0025] In one embodiment, the heating element further includes a common pad, a first pad, and a second pad;

[0026] Wherein, one end of the third heating element is connected to the common pad, and the other end of the third heating element is connected to the first pad;

[0027] One end of the first heating element and one end of the second heating element are electrically connected, and the other end of the first heating element is connected to the common pad, and the other end of the second heating element is connected to the second pad; or, the other end of the second heating element is connected to the common pad, and the other end of the first heating element is connected to the second pad.

[0028] According to a second aspect of this application, a heated non-combustible atomizing device is provided, comprising a heating element as described above.

[0029] The heating element provided in this embodiment includes a base tube, a first heating element, a second heating element, and a third heating element. The first heating element is located in the inlet section of the base tube, the second heating element is located in the outlet section, and the third heating element is located in the main body section connecting the inlet and outlet sections. The first and / or second heating elements have high heating power per unit length, and their own temperature is higher than that of the third heating element during operation. This allows the inlet and / or outlet sections to maintain sufficient heating intensity even in the presence of ambient heat exchange, thereby actively compensating for heat loss in this area, shortening the response time for aerosol generation, achieving rapid aerosol release, and ensuring that the aerosol matrix in the inlet and / or outlet sections is heated to a temperature similar to that of the main body section. This contributes to the uniformity and stability of heating of the aerosol matrix within the entire heating element. Since the spatial distribution difference in the heating performance of the heating element originates from the inherent properties of the heating element itself, rather than relying on changing the winding density of the heating element as in related technologies, it avoids the uneven heat source distribution caused by changes in the winding density of the heating element, contributing to more uniform heating and improving the consistency of aerosol release. Furthermore, since each heating element can be produced in a standardized manner, there is no need to adjust the heating capacity by varying the winding density, eliminating the complex winding process, simplifying the production flow, facilitating assembly, and improving product yield and batch consistency. In summary, by setting heating elements with different heating powers per unit length, spatial differentiation of heating tube performance is achieved, improving the uniformity of heat source distribution, reducing manufacturing difficulty, and thus improving both aerosol response speed and release quality while simultaneously enhancing product yield and consistency.

[0030] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0033] Figure 1 This is a schematic diagram of the structure of a heating tube provided in an exemplary embodiment of this application;

[0034] Figure 2 yes Figure 1 A schematic diagram showing the unfolded state of the heating element;

[0035] Figure 3 This is a schematic diagram of the unfolded state of the heating element provided in another exemplary embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the unfolded state of the heating element provided in another exemplary embodiment of this application;

[0037] Figure 5 This is a schematic diagram of the unfolded state of the heating element provided in another exemplary embodiment of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Heating element; 1. Base tube; 11. Air inlet section; 12. Air outlet section; 13. Main body section; 2. First heating element; 21. First heating section; 22. First connecting section; 3. Second heating element; 31. Second heating section; 32. Second connecting section; 4. Third heating element; 41. Third heating section; 42. Third connecting section; 5. Connector; 51. Conductor circuit; 52. Fourth heating element; 6. Common pad; 7. First pad; 8. Second pad. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0041] Please see Figure 1 and Figure 2 This application provides a heating element 100, including a base tube 1, a first heating element 2, a second heating element 3, and a third heating element 4. The base tube 1 is used to contain an aerosol matrix and has an inlet section 11 and an outlet section 12 disposed opposite to each other, and a main body section 13 connecting the inlet section 11 and the outlet section 12. The first heating element 2 is disposed in the inlet section 11; the second heating element 3 is disposed in the outlet section 12; and the third heating element 4 is disposed in the main body section 13; wherein the heating power per unit length of the first heating element 2 and / or the second heating element 3 is greater than the heating power per unit length of the third heating element 4.

[0042] As an important component of the heating element 100, the base tube 1 is a hollow tubular structure, with an internal space for containing an aerosol matrix. This aerosol matrix can be solid, semi-solid, or in other forms, and can be plant extracts, natural fragrance mixtures, or atomizing matrix containing specific functional ingredients. To achieve orderly airflow, the base tube 1 is divided into three functional regions along the axial direction: an inlet section 11, an outlet section 12, and a main body section 13. The inlet section 11, located at one end of the base tube 1, guides outside air or carrier gas into the interior of the base tube 1, allowing it to contact the aerosol matrix carried in this region to promote its thermal evaporation. The outlet section 12, located at the other end of the base tube 1, opposite the inlet section 11, is used to export the heated aerosol to the outside for user inhalation. This region also carries a portion of the aerosol matrix and participates in the aerosol generation process. The main body section 13, located between the inlet section 11 and the outlet section 12, constitutes the main part of the base tube 1, carrying most of the aerosol matrix and providing the main heating area. It should be understood that the air inlet section 11 and the air outlet section 12 undertake part of the heating task of the aerosol matrix, but since they are usually exposed to the outside of the equipment or close to the outer shell, they are easily affected by the ambient temperature and have a relatively fast heat loss phenomenon; while the main body section 13 is in a relatively closed environment and has less heat loss.

[0043] The heating element 100 provided in this embodiment has a first heating element 2 disposed in the air inlet section 11 of the base tube 1, a second heating element 3 disposed in the air outlet section 12, and a third heating element 4 disposed in the main body section 13 connecting the air inlet section 11 and the air outlet section 12. The first heating element 2 and / or the second heating element 3 have a high heating power per unit length, and their own temperature in the working state is higher than that of the third heating element 4. In the presence of ambient heat exchange, the air inlet section 11 and / or the air outlet section 12 can maintain sufficient heating intensity, thereby actively compensating for heat loss in this area, shortening the response time of aerosol generation, realizing rapid aerosol output, and ensuring that the aerosol matrix in the air inlet section 11 and / or the air outlet section 12 is heated to a temperature close to that of the main body section 13, which helps to achieve uniformity and stability of heating of the aerosol matrix inside the entire heating element 100. Since the spatial distribution difference in the heating performance of the heating element 100 originates from the inherent properties of the heating element itself, rather than relying on methods such as changing the winding density of the heating element as in related technologies, it avoids the uneven heat source distribution caused by changes in the winding density of the heating element. This helps to achieve more uniform heating and improve the consistency of aerosol release. Furthermore, since each heating element can be produced in a standardized manner, there is no need to adjust the heating capacity by changing the winding density, eliminating complex winding processes, simplifying the production process, facilitating assembly, and improving product yield and batch consistency. In summary, by setting heating elements with different heating powers per unit length, spatially differentiated configuration of the heating performance of the heating element 100 is achieved, improving the uniformity of heat source distribution, reducing manufacturing difficulty, and thus improving both aerosol response speed and release quality while simultaneously improving product yield and consistency.

[0044] It is understandable that the boundary positions between the air inlet section 11, the main body section 13, and the air outlet section 12 in the heating tube 100, and their proportions on the base tube 1, are not fixed, but can be adaptively designed according to the heat loss distribution in actual applications. For example, in a base tube 1 with a smaller diameter, the heat loss range at its end is relatively small, so the lengths of the air inlet section 11 and the air outlet section 12 can be shortened accordingly; while in a base tube 1 with a larger diameter, since the heat loss range at the end is larger, it is usually necessary to appropriately increase the coverage length of the air inlet section 11 and the air outlet section 12 to ensure that this area receives sufficient heating compensation, thereby improving the overall heating uniformity and aerosol generation effect.

[0045] Please see Figure 1 and Figure 2In some embodiments, the heating element 100 further includes a connector 5, which is disposed in the main body section 13 and electrically connects the first heating element 2 and the second heating element 3. In these embodiments, by providing the connector 5 in the main body section 13 and electrically connecting the first heating element 2 and the second heating element 3, an electrical path is established between them, thereby simplifying the number of external leads and reducing the wiring space and assembly complexity required for the first heating element 2 and the second heating element 3 to lead out their respective power supplies. At the same time, this connection method helps to improve the electrical consistency between the first heating element 2 and the second heating element 3, reduces the risk of resistance changes due to poor contact, and improves the stability and reliability of the overall heating performance. In addition, since the connector 5 is located in the relatively enclosed area of ​​the main body section 13, it is less affected by external environmental interference, which is conducive to maintaining a good electrical connection environment, thereby further improving the stability and reliability of the electrical connection.

[0046] Please see Figure 3 and Figure 4 In some embodiments, the connector 5 includes a conductor line 51 electrically connected between the first heating element 2 and the second heating element 3. In these embodiments, using the conductor line 51 as the connector 5 results in a simple structure and ease of manufacturing. It should be understood that the heat generated by the conductor line 51 itself is negligible and will not significantly affect the heating performance of the main body segment 13. Therefore, its thermal effect does not need to be considered in the layout design, thereby simplifying the layout configuration and improving assembly efficiency and product consistency.

[0047] Please see Figure 2 and Figure 5 In some embodiments, the connector 5 includes a fourth heating element 52, which is integrally formed with the first heating element 2 and the second heating element 3. In these embodiments, configuring the connector 5 as a fourth heating element 52 with heating function, and integrally formed with the first heating element 2 and the second heating element 3, not only achieves electrical connection function, but also enhances the heating capacity of the main body segment 13, helping to improve the heating uniformity of the entire heating tube 100. Although this solution needs to consider the impact of the fourth heating element 52 on the heat distribution of the main body segment 13 during design, its integrated structure reduces individual wiring and assembly steps, improves product integration and consistency, and is particularly suitable for applications with high heating performance requirements.

[0048] In some other embodiments, the first heating element 2 and the second heating element 3 can be electrically disconnected from each other so as to allow for independent power supply.

[0049] In some embodiments, the heating power per unit length of the fourth heating element 52 can be the same as that of the first heating element 2 and the second heating element 3, or it can be configured differently according to actual heating requirements. For example, the first heating element 2 has the highest heating power per unit length, followed by the second heating element 3, and the fourth heating element 52 has the lowest; or, the second heating element 3 has the highest heating power per unit length, followed by the first heating element 2, and the fourth heating element 52 has the lowest. By flexibly adjusting the relationship between the heating power per unit length of each heating element, precise control of the heating intensity of different areas of the heating tube 100 can be achieved, thereby better matching the spatial distribution characteristics and heat loss differences of the aerosol matrix, and improving the consistency and adaptability of the overall heating performance.

[0050] Please see Figure 1 and Figure 2 In some embodiments, the connector 5 extends axially along the main body segment 13. In these embodiments, the connector 5 extends axially along the main body segment 13 and directly connects the first heating element 2 and the second heating element 3. This arrangement effectively shortens the physical path of the connector 5, thereby reducing its space occupation on the main body segment 13. In addition, the shorter connection path also helps to reduce the impact of the connector 5 on the original heat distribution of the main body segment 13, reduce the impact of the connector 5 on the heating performance of the main body segment 13, and thus maintain the stability and consistency of the overall heating performance of the base tube 1.

[0051] Please see Figure 2 and Figure 3 In some embodiments, the first heating element 2 extends circumferentially along the air intake section 11. In these embodiments, by extending the first heating element 2 circumferentially along the air intake section 11, the heating coverage area of ​​the first heating element 2 can be increased, the circumferential heating uniformity of the air intake section 11 can be improved, thereby improving the heating consistency of the aerosol matrix in this area and enhancing the heating response speed and aerosol release efficiency.

[0052] Please see Figure 2 and Figure 3 In some embodiments, the second heating element 3 extends circumferentially along the air outlet section 12. In these embodiments, by extending the second heating element 3 circumferentially along the air outlet section 12, the heating coverage area can be increased, the circumferential heating uniformity of the air outlet section 12 can be improved, thereby improving the heating consistency of the aerosol matrix in this area, reducing aerosol concentration fluctuations, and enhancing the stability of the user experience.

[0053] Please see Figure 2 and Figure 3In some embodiments, the third heating element 4 extends circumferentially along the main body segment 13. In these embodiments, by extending the third heating element 4 circumferentially along the main body segment 13, the heating coverage area can be increased, the circumferential heating uniformity of the main body segment 13 can be improved, thereby improving the heating consistency of the aerosol matrix in this area and further optimizing the overall aerosol generation performance.

[0054] It should be noted that the first heating element 2 extending circumferentially along the air intake section 11 does not mean that it must completely cover the entire circumference of the area. In some embodiments, the first heating element 2 can be arranged around a portion of the circumference of the air intake section 11, for example, covering most of the circumference, as long as sufficient heating of the aerosol matrix in that area is achieved. This arrangement also helps to improve circumferential heating uniformity while taking into account manufacturing processability and assembly flexibility. In other embodiments, the first heating element 2 can cover nearly a circumference of the air intake section 11, for example, a coverage ratio of 90% to 100%.

[0055] The second heating element 3 extends circumferentially along the air outlet section 12, and the third heating element 4 extends circumferentially along the main body section 13. Their arrangement can also adopt a similar partially circumferential coverage form. For example, the second heating element 3 and the third heating element 4 can be selected to cover a partial or nearly complete circumference according to actual design requirements. As long as they have a certain degree of circumferential extension and can improve heating uniformity, they belong to the optional implementation methods of this application, and will not be elaborated further here.

[0056] Please see Figure 4 and Figure 5 In some embodiments, the first heating element 2 includes a plurality of first heating segments 21, each extending circumferentially along the air intake segment 11, and the plurality of first heating segments 21 are spaced apart axially along the air intake segment 11. In these embodiments, by configuring the first heating element 2 as a plurality of first heating segments 21 extending circumferentially along the air intake segment 11 and spaced apart axially, the uniformity of temperature distribution in the axial direction of the region can be improved. This multi-segment structure helps to reduce the axial temperature difference caused by a single heating structure, improves the heat transfer efficiency within the air intake segment 11, thereby achieving a more uniform and faster heating response, and further improving the volatilization efficiency of the aerosol matrix and the consistency of the exhaust gas quality.

[0057] Please see Figure 4 and Figure 5In some embodiments, the second heating element 3 includes a plurality of second heating segments 31, each extending circumferentially along the outlet section 12, and the plurality of second heating segments 31 are spaced apart axially along the outlet section 12. In these embodiments, by configuring the second heating element 3 as a plurality of second heating segments 31 extending circumferentially along the outlet section 12 and spaced apart axially, its heating consistency in the axial direction can be effectively improved. This arrangement helps to ensure that the aerosol matrix in the outlet section 12 is heated more uniformly, avoiding aerosol concentration fluctuations caused by uneven local heating, thereby further improving the stability and comfort of the user's inhalation experience.

[0058] Please see Figures 2 to 5 In some embodiments, the third heating element 4 includes a plurality of third heating segments 41, each extending circumferentially along the main body segment 13, and the plurality of third heating segments 41 are spaced apart axially along the main body segment 13. In these embodiments, by configuring the third heating element 4 as a plurality of third heating segments 41 extending circumferentially along the main body segment 13 and spaced apart axially, the thermal field distribution in the axial direction of the region can be optimized. Since the main body segment 13 bears most of the aerosol matrix, the multi-segment heating structure helps to achieve a more comprehensive and stable heating effect, reduce temperature gradient differences, and thus further improve the stability and continuity of the overall aerosol generation performance.

[0059] It is understood that in some embodiments, when the length of the air inlet section 11 is short, the first heating element 2 may consist of only a circumferentially extending first heating segment 21. Similarly, when the length of the air outlet section 12 is short, the second heating element 3 may also consist of only a circumferentially extending second heating segment 31. Likewise, in some embodiments, when the length of the main body section 13 is short, the third heating element 4 may also consist of only a circumferentially extending third heating segment 41. The above-described configuration, while meeting heating performance requirements, helps simplify structural design and manufacturing processes, improve product consistency, and reduce assembly difficulty.

[0060] Please see Figure 4 and Figure 5In some embodiments, the first heating element 2 further includes at least one first connecting segment 22, which extends axially along the air intake section 11, and its two ends are respectively connected to one end of two adjacent first heating elements 21. In these embodiments, by providing axially extending first connecting segments 22 between multiple circumferentially extending first heating elements 21, the first heating elements 21 can be interconnected to form an integral heating structure. Thus, the first heating element 2 forms a continuous but non-spiral, bent-shaped connection structure. Compared to traditional curved or spiral structures, this bent-shaped connection method is easier to achieve "horizontal and vertical" wiring control, which helps improve production consistency and simplify assembly processes during manufacturing. At the same time, this structural form helps reduce the risk of deformation of the heating element during molding and bonding to the base tube 1, thereby further improving product yield and long-term reliability.

[0061] Please see Figure 4 and Figure 5 In some embodiments, the second heating element 3 further includes at least one second connecting segment 32, which extends axially along the air outlet segment 12, and its two ends are respectively connected to one end of two adjacent second heating segments 31. Thus, the second heating element 3 forms a continuous but non-spiral, bent-connected structure. This structural form is similar to that of the aforementioned first heating element 2, and similarly helps to improve production consistency, simplify assembly processes, and reduce the risk of deformation of the heating element during molding and bonding, thereby improving product yield and reliability.

[0062] Please see Figure 4 and Figure 5 In some embodiments, the third heating element 4 further includes at least one third connecting segment 42, which extends axially along the main body segment 13, and whose two ends are respectively connected to one end of two adjacent third heating segments 41. Thus, the third heating element 4 forms a continuous but non-spiral, bent-connection structure. This structural form is also suitable for standardized manufacturing and assembly, helping to improve heating uniformity and enhance the stability and consistency of overall aerosol generation performance.

[0063] Understandably, when designing the heating element 100, the thermal matching relationship between the heating element and the atomizing matrix needs to be considered. Since a longer heating element results in a larger volume of atomized matrix heated, it is more reasonable to use the heating power per unit length (i.e., the heat generated per unit length) as a more accurate measure of the heating element's heating capacity. By setting the heating power per unit length of the first heating element 2 and / or the second heating element 3 to be greater than that of the third heating element 4, it is possible to ensure that the air inlet section 11 and / or the air outlet section 12 achieve higher local heating intensity, thereby meeting their higher requirements for rapid response and heating uniformity. This design method based on heating power per unit length helps to achieve a unified structural arrangement and process adaptability of multiple heating elements, improving product consistency and control precision.

[0064] In some embodiments, the first heating element 2, the second heating element 3, and the third heating element 4 are connected in series; wherein the resistivity of at least one of the first heating element 2 and the second heating element 3 is greater than the resistivity of the third heating element 4; and / or, the cross-sectional area of ​​at least one of the first heating element 2 and the second heating element 3 is smaller than the cross-sectional area of ​​the third heating element 4. In these embodiments, by connecting the first heating element 2, the second heating element 3, and the third heating element 4 in series and rationally configuring the material resistivity and / or cross-sectional area of ​​each heating element, the first heating element 2 and / or the second heating element 3 can generate higher heating power per unit length under the same current conditions. For example, increasing the resistivity or decreasing the cross-sectional area can effectively increase the resistance value per unit length, thereby increasing the heating power density. Specifically, a single parameter can be adjusted, such as increasing the resistivity of the first heating element 2 or decreasing its cross-sectional area; or both can be adjusted simultaneously to synergistically increase the heating power. Similarly, for the second heating element 3, its heating power per unit length can also be made greater than that of the third heating element 4 in the above manner. This configuration not only effectively achieves efficient heating of the intake section 11 and the exhaust section 12, but also facilitates the use of a unified power supply, simplifies the circuit control system, and helps improve the product's integration level and manufacturing consistency.

[0065] In some embodiments, the first heating element 2 and the second heating element 3 are connected in series, and the series-connected first heating element 2 and the second heating element 3 are connected in parallel with the third heating element 4; wherein, the resistivity of at least one of the first heating element 2 and the second heating element 3 is less than the resistivity of the third heating element 4; and / or, the cross-sectional area of ​​at least one of the first heating element 2 and the second heating element 3 is greater than the cross-sectional area of ​​the third heating element 4. In these embodiments, by setting the resistivity of the first heating element 2 to be lower and / or the cross-sectional area to be larger, it can maintain a higher heating power per unit length compared to the third heating element 4. Similarly, by setting the resistivity of the second heating element 3 to be lower and / or the cross-sectional area to be larger, it can maintain a higher heating power per unit length compared to the third heating element 4. This arrangement not only effectively achieves efficient heating of the air intake section 11 and the air outlet section 12, but also facilitates the use of a unified power supply, simplifying the circuit control system.

[0066] In some other embodiments, the first heating element 2 and the second heating element 3 are connected in parallel, and the parallel combination is connected in series with the third heating element 4. In other embodiments, the first heating element 2, the second heating element 3, and the third heating element 4 can all be connected in parallel. Based on this, by reasonably configuring the resistivity and / or cross-sectional area of ​​each heating element, the heating power per unit length of the first heating element 2 and / or the second heating element 3 can still be made higher than that of the third heating element 4.

[0067] It should be noted that when configured in parallel, the heating power per unit length of the heating element is still related to its length. Therefore, when controlling resistivity and cross-sectional area, the influence of length must still be considered comprehensively. In other words, the methods described above for achieving different heating power per unit length are not limiting, but rather provide a feasible direction for adjustment and verification by those skilled in the art based on actual operating conditions. Specifically, each heating element can be made of the same material but with different cross-sections (e.g., different thicknesses and / or widths), or made of materials with different resistivities, to meet different power requirements. The power configuration per unit length of the heating element can be optimized based on actual heat loss conditions, for example, by determining the optimal heating power ratio per unit length through simulation or experimental testing to achieve a uniform heating effect across the entire heating element 100.

[0068] Furthermore, it should be understood that this application does not preclude enhancing local heating capacity by further adjusting the density of the heating elements in addition to utilizing the difference in heating power per unit length. For example, the spacing between the heating sections in the air inlet section 11 and / or the air outlet section 12 can be appropriately shortened to further compensate for heat loss in that area. However, since this solution mainly relies on the heating power per unit length of the heating elements themselves to achieve differentiated heating intensity, rather than entirely relying on the density distribution of the heating elements, a relatively uniform arrangement of the heating elements can still be achieved in the overall structure, which helps to form a more uniform heat source distribution, improve heating consistency and product assembly efficiency.

[0069] In some embodiments, the heating element 100 further includes a common pad 6, a first pad 7, and a second pad 8. One end of the third heating element 4 is connected to the common pad 6, and the other end of the third heating element 4 is connected to the first pad 7. One end of the first heating element 2 and one end of the second heating element 3 are electrically connected, and the other end of the first heating element 2 is connected to the common pad 6, and the other end of the second heating element 3 is connected to the second pad 8; or, the other end of the second heating element 3 is connected to the common pad 6, and the other end of the first heating element 2 is connected to the second pad 8. In these embodiments, one end of the first heating element 2 and the second heating element 3 are electrically connected to each other and connected to the common pad 6 and the second pad 8 respectively through their other ends; the two ends of the third heating element 4 are connected to the common pad 6 and the first pad 7 respectively. Based on this, one can choose to connect the common pad 6, the first pad 7, and the second pad 8 to an external power supply simultaneously, thus achieving a circuit connection where the first heating element 2 and the second heating element 3 are connected in series and then in parallel with the third heating element 4; alternatively, one can choose to connect only the first pad 7 and the second pad 8, so that the first heating element 2, the second heating element 3, and the third heating element 4 form a series connection. The design of the common pad 6 not only enhances the versatility of the pad layout and the flexibility of wiring, but also helps to reduce the overall number of solder joints, save substrate space, and improve assembly efficiency and product consistency. By unifying the pad interface, the design complexity of the external control circuit can also be simplified, which is conducive to achieving modular assembly and standardized production.

[0070] This application does not limit the specific formation method of the first heating element 2, the second heating element 3, and the third heating element 4. Each heating element can adopt a thin-film or thick-film resistive structure, and can be formed on the outer or inner wall of the base tube 1 through thick-film printing, physical vapor deposition (PVD), spraying, screen printing, or other applicable manufacturing processes. In some cases, the heating element is set on the outside of the base tube 1 to simplify the manufacturing process and improve heat dissipation efficiency, but in certain specific application scenarios, it can also be attached to the inside of the base tube 1 to optimize the heat conduction path or meet special structural layout requirements. Among them, the thick-film structure can be formed by coating a slurry containing conductive fillers (such as silver-palladium alloy, platinum-iridium alloy, or other high resistivity materials) and sintering at high temperature, which has good resistance controllability and process adaptability; the thin-film structure can be formed into a uniform and dense metal or alloy layer by sputtering, evaporation, etc., which is suitable for high-precision resistance control. By reasonably selecting the heating material and adjusting parameters such as the width and thickness of the film layer, the resistance value of the heating element can be flexibly adjusted to adapt to different power output requirements and target atomization effects.

[0071] According to a second aspect of this application, a heat-not-burning atomizing device is provided, including a heating element 100, the structure of which is as described above. The heating element 100 is used to controllably heat an aerosol-generating matrix without initiating combustion, thereby releasing an inhalable aerosol. By providing heating elements with different heating powers per unit length within the heating element 100, a spatially differentiated configuration of heating performance is achieved, improving the uniformity of heat source distribution and reducing manufacturing difficulty. Therefore, while improving the aerosol response speed and release quality, it also helps to improve product yield and batch consistency. Since this heat-not-burning atomizing device adopts the heating element 100 structure provided in the above embodiments, it possesses at least all the beneficial effects of the aforementioned embodiments, which will not be repeated here.

[0072] The heated non-combustible atomizing device can be a handheld atomizer, a mouthpiece atomizer, an insert atomizer, or a portable / pen-type atomizer, etc. Its specific form can be adjusted according to actual application needs, and this application does not impose specific limitations.

[0073] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0074] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0075] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0076] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A heating element, characterized in that, include: A base tube for containing an aerosol matrix, the base tube having an inlet section and an outlet section disposed opposite to each other, and a main body section connecting the inlet section and the outlet section; The first heating element is located in the air intake section; A second heating element is located in the air outlet section; The third heating element is located in the main body section; Wherein, the heating power per unit length of the first heating element and / or the second heating element is greater than the heating power per unit length of the third heating element.

2. The heating element according to claim 1, characterized in that, The heating element also includes a connector, which is located on the main body section and electrically connects the first heating element and the second heating element.

3. The heating element according to claim 2, characterized in that, The connector includes a conductor line, which is electrically connected between the first heating element and the second heating element; Alternatively, the connector may include a fourth heating element, which is integrally formed with the first heating element and the second heating element.

4. The heating element according to claim 2, characterized in that, The connector extends axially along the main body segment.

5. The heating element according to claim 1, characterized in that, The first heating element extends circumferentially along the air intake section; and / or, The second heating element extends circumferentially along the air outlet section; and / or, The third heating element extends circumferentially along the main body segment.

6. The heating element according to claim 1, characterized in that, The first heating element includes a plurality of first heating segments, each first heating segment extending circumferentially along the air intake segment, and the plurality of first heating segments being spaced apart axially along the air intake segment; and / or, The second heating element includes a plurality of second heating segments, each second heating segment extending circumferentially along the air outlet segment, and the plurality of second heating segments being spaced apart axially along the air outlet segment; and / or, The third heating element includes multiple third heating segments, each of which extends circumferentially along the main body segment, and the multiple third heating segments are spaced apart axially along the main body segment.

7. The heating element according to claim 1, characterized in that, The first heating element, the second heating element, and the third heating element are connected in series. Wherein, the resistivity of at least one of the first heating element and the second heating element is greater than the resistivity of the third heating element; and / or, the cross-sectional area of ​​at least one of the first heating element and the second heating element is smaller than the cross-sectional area of ​​the third heating element.

8. The heating element according to claim 1, characterized in that, The first heating element and the second heating element are connected in series, and the first heating element and the second heating element connected in series are connected in parallel with the third heating element; Wherein, the resistivity of at least one of the first heating element and the second heating element is less than the resistivity of the third heating element; and / or, the cross-sectional area of ​​at least one of the first heating element and the second heating element is greater than the cross-sectional area of ​​the third heating element.

9. The heating element according to claim 1, characterized in that, The heating element also includes a common pad, a first pad, and a second pad; Wherein, one end of the third heating element is connected to the common pad, and the other end of the third heating element is connected to the first pad; One end of the first heating element and one end of the second heating element are electrically connected, and the other end of the first heating element is connected to the common pad, and the other end of the second heating element is connected to the second pad; or, the other end of the second heating element is connected to the common pad, and the other end of the first heating element is connected to the second pad.

10. A heating non-combustible atomizing device, characterized in that, Including the heating element as described in any one of claims 1 to 9.

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