Heat generating member and aerosol generating apparatus

Abstract

This application relates to the field of aerosol generation equipment technology, providing a heating element and an aerosol generation device. The heating element includes: a main heating body comprising multiple nested heating tubes, each extending into and abutting against adjacent heating tubes along a first direction, and each heating tube having a microporous structure on its sidewall, with the microporous structures on two adjacent heating tubes being at least partially connected; a pin structure connected to the main heating body for electrical connection to a power supply component; and a penetration portion at one end of the main heating body in the first direction for penetrating into the interior of an aerosol generating rod. The technical solution of this application can promote heat transfer through the airflow movement formed within the microporous structure, accelerating the heating speed, shortening the preheating time, ensuring the consistency of aerosol generation, and the microporous structure has an adsorption effect on residual aerosol liquid, effectively reducing residual aerosol liquid on the surface of the main heating body, thus reducing or eliminating the need for cleaning operations by the user.

Description

Technical Field

[0001] This application relates to the field of aerosol generation equipment technology, specifically to a heating element and an aerosol generation device. Background Technology

[0002] Currently, heated non-combustible aerosol generators often employ a central heating method. This involves placing a cylindrical heating element within a heating chamber. When the aerosol generating rod is inserted into the heating chamber, the heating element penetrates the interior of the rod to heat its internal structure. However, existing heating elements are typically solid or hollow with a closed surface, resulting in a relatively slow heating rate. After starting heating, a lengthy preheating time is required to reach the target temperature, affecting atomization performance. Furthermore, residual aerosol liquid easily accumulates on the surface of the heating element after use; failure to clean it promptly can disrupt normal heating. Utility Model Content

[0003] To address the problems of relatively slow heating speed, long preheating time, poor atomization effect, and frequent cleaning of aerosol residue on the surface in existing aerosol generating devices using central heating, this application provides a heating element and an aerosol generating device.

[0004] An embodiment of the first aspect of the technical solution of this application provides a heating element, including: a main heating body, the main heating body including a plurality of nested heating tubes, the heating tubes being conductive structures, and each heating tube extending along a first direction and penetrating into an adjacent heating tube, the adjacent heating tubes abutting against each other, and each heating tube having a microporous structure on its sidewall, the microporous structures on two adjacent heating tubes being at least partially connected; and a pin structure, the pin structure being connected to the main heating body, the pin structure being used to electrically connect to a power supply component so that the main heating body heats up when energized; wherein, one end of the main heating body in the first direction has an insertion portion, the insertion portion being configured to penetrate into the interior of an aerosol generating rod.

[0005] In a further embodiment of this application, each heating element has a microporous structure including at least two types of through holes with different aperture sizes, and there are multiple through holes of each type; wherein, between two adjacent heating elements, at least some of the through holes are staggered with each other.

[0006] In a further embodiment of this application, at least two types of through holes on the same heating element are alternately arranged in a first direction; and / or, at least two types of through holes on the same heating element are alternately arranged in the circumferential direction of the heating element.

[0007] In a further embodiment of this application, the through holes on two adjacent heating tubes, one inside and one outside, have different aperture sizes; and / or, the through holes on two adjacent heating tubes, one inside and one outside, have different arrangement patterns.

[0008] In a further embodiment of this application, the outermost heating tube located in the main heating element is the first heating tube, and the remaining heating tubes are all located inside the first heating tube; wherein, the penetration part is located at one end of the first heating tube, and the penetration part forms a spike structure, the pin structure is connected to the outer wall of the first heating tube, and extends away from the penetration part.

[0009] In a further embodiment of this application, the innermost heating tube located on the main heating element is a second heating tube. A liquid accumulation groove extending along the first direction is formed inside the second heating tube. The liquid accumulation groove is used to contain aerosol residue, and at least one end of the liquid accumulation groove in the first direction is a closed structure.

[0010] In a further embodiment of this application, the main heating element is a cylindrical structure; or, at least a portion of the main heating element is a conical structure, and the diameter of the main heating element gradually decreases in the direction approaching the insertion portion along the first direction.

[0011] In a further embodiment of this application, for any two adjacent heating elements, the outer diameter of the inner heating element is equal to the inner diameter of the outer heating element; and / or, among a plurality of heating elements, at least two heating elements have the same dimensions in a first direction.

[0012] In a further embodiment of this application, the heating element is a metal felt structure, and adjacent heating elements are connected in sequence to form an integral structure.

[0013] An embodiment of the second aspect of the technical solution of this application also provides an aerosol generating device, including: a main housing, one end of the main housing having an insertion port in a first direction, and a heating cavity communicating with the insertion port inside the main housing; a heating element in any of the embodiments of the first aspect, the heating element being disposed inside the main housing along the first direction, at least a portion of the heating element extending into the heating cavity, and the insertion portion facing the insertion port; and a power supply component, the power supply component being disposed in the main housing and electrically connected to the pin structure of the heating element to supply power to the heating element.

[0014] The beneficial effects of the above-mentioned technical solution of this application are as follows:

[0015] According to the heating element in this application, the structure has been improved and optimized. Multiple heating tubes nested inside and outside are connected to form the main heating element. The heating tubes have a microporous structure, which allows heat transfer not only through contact after penetrating the aerosol generating rod, but also airflow between the heating tubes through the microporous structure. This effectively improves heat transfer efficiency, results in fast heating speed, shortens preheating time, ensures sufficient aerosol content in the aerosol mixture generated by atomization, and guarantees the consistency of aerosol generation. Furthermore, the microporous structure has an adsorption effect on aerosol residue, which can effectively reduce aerosol residue on the surface of the main heating element, thereby reducing or eliminating the need for cleaning operations by the user and improving the user experience. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a heating element in one embodiment of this application;

[0017] Figure 2 This is a perspective view of the heating element in one embodiment of this application from another angle.

[0018] Figure 3 This is a bottom view of the heating element in one embodiment of this application;

[0019] Figure 4 This is a front view of the heating element in one embodiment of this application;

[0020] Figure 5 This is an exploded view of the heating element in one embodiment of this application;

[0021] Figure 6 This is a cross-sectional view of the heating element in one embodiment of this application (the cross-sectional plane is a vertical plane);

[0022] Figure 7 This is a cross-sectional view (the cross-sectional plane is horizontal) of the heating element in another embodiment of this application;

[0023] Figure 8 This is a front view of the heating element in another embodiment of this application;

[0024] Figure 9 This is a schematic diagram of an aerosol generating device in one embodiment of this application;

[0025] Figure 10 This is a cross-sectional view of an aerosol generating device in one embodiment of this application (the cross-section is a vertical plane; and the pin structure of the heating element and some micropore structures are not shown in the figure).

[0026] In the above-mentioned figures, arrow F1 indicates the first direction; Figure 10 The dashed arrows in the diagram indicate the direction of airflow.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100 Heating element, 1 main heating body, 11 heating tube, 111 first heating tube, 112 insertion part, 113 second heating tube, 1131 liquid accumulation tank, 13 microporous structure, 131 first through hole, 132 second through hole, 133 third through hole, 2 pin structure.

[0029] 400 Aerosol generating device, 410 Main housing, 411 Insertion port, 412 Heating chamber, 4121 Penetration hole, 420 Power supply component, 421 Battery, 422 Control board, 431 Support structure; 500 Aerosol generating rod. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0031] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0032] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0033] An aerosol generating rod is an atomizing matrix carrier used in conjunction with an aerosol generating device. It stores an atomizing matrix and can be heated within the aerosol generating device to atomize the matrix and generate aerosols. To fit the insertion port and heating chamber of the aerosol generating device, the aerosol generating rod is typically a cylindrical rod-shaped structure.

[0034] The heating element provided in this application can be applied in an aerosol generating device to form a central heating structure. When the aerosol generating rod is inserted into the heating chamber, the heating element can penetrate into the interior of the aerosol generating rod for heating. Moreover, the main heating body formed by multiple nested heating tubes can not only form contact heat transfer, but also form airflow between the heating tubes through the microporous structure to promote heat conduction. At the same time, the microporous structure can also adsorb aerosol residue, thereby preventing aerosol residue from accumulating on the surface of the main heating body and affecting normal heating.

[0035] The following describes some embodiments of the heating element and aerosol generating device provided in this application with reference to the accompanying drawings. For ease of description, the height direction of the heating element and aerosol generating device is taken as the first direction in the following embodiments.

[0036] The first aspect of this application provides a heating element 100, such as... Figure 1 , Figure 2 and Figure 3 As shown, the heating element 100 includes a main heating body 1 and a pin structure 2. The main heating body 1 includes multiple heating tubes 11, which are nested sequentially. That is, in the first direction, the heating tubes 11 extend sequentially into adjacent heating tubes 11, forming a multi-layered structure with inner and outer nesting. All heating tubes 11 are conductive and can generate heat when energized. Adjacent heating tubes 11 abut against each other. When any heating tube 11 is energized, the adjacent heating tubes 11 can make contact, conduct electricity, and generate heat, thereby heating the main heating body 1 as a whole. One end of the main heating body 1 in the first direction has a penetration portion 112. When used in an aerosol generating device, the penetration portion 112 can penetrate into the interior of the aerosol generating rod to heat the aerosol generating rod. Each heating element 11 has a microporous structure 13 on its sidewall. Specifically, the microporous structure 13 refers to a structure with a large number of tiny through-holes. At least a portion of the microporous structure 13 on adjacent heating elements 11 is interconnected; that is, at least a portion of the microporous structure 13 on the outer heating element 11 is connected to at least a portion of the microporous structure 13 on the inner heating element 11, allowing gas to flow through the microporous structure 13. The microporous structure 13 can be distributed according to a certain arrangement rule or in a disordered manner. The main heating element 1 is also connected to a pin structure 2. When the heating element 100 is used in an aerosol generation device, it can be electrically connected to a power supply component through the pin structure 2 to supply power to the main heating element 1, causing the main heating element 1 to heat up when energized.

[0037] Understandably, common heated non-combustible aerosol generating devices that use central heating typically employ a columnar heating element. This element can be solid or hollow, but its surface is usually sealed. It heats primarily through contact, with no airflow inside or outside the heating element. Consequently, the heating speed is relatively slow, and the preheating time is relatively long after starting heating. The amount of aerosol generated during preheating is also relatively small, affecting the taste. Furthermore, aerosol residue tends to accumulate on the surface of the heating element over long-term use. If not cleaned promptly, this can affect normal heating and the user experience.

[0038] The heating element 100 in this embodiment has been improved and optimized in structure. It uses multiple heating tubes nested inside and outside to form a main heating body 1. The heating tubes have a microporous structure 13. After penetrating into the aerosol generating rod, it can not only transfer heat through contact, but also form airflow between the heating tubes 11 through the microporous structure 13. This can effectively improve the heat transfer efficiency, heat up quickly, shorten the preheating time, and ensure sufficient aerosol content in the aerosol mixture generated by atomization, thus ensuring the consistency of aerosol generation. In addition, the microporous structure 13 also has an adsorption effect on aerosol residue, which can effectively reduce the aerosol residue on the surface of the main heating body 1. This reduces or eliminates the need for cleaning operations by the user, which is beneficial to improving the user experience.

[0039] It should be noted that the heating element 11 can be made of a conductive and heat-generating material, such as metal; the number, shape, and size of the heating elements 11 can be set according to specific application needs, for example, the heating element 11 is not limited to... Figure 1 The circular tubular structure shown can also take other structural forms, such as tubular structures with cross-sectional shapes of ellipse, triangle, rectangle or other polygons.

[0040] In further embodiments of this application, such as Figures 1 to 4 As shown, each heating element 11 has a microporous structure 13 comprising at least two types of through holes with different aperture sizes, and each through hole is multiple, so that the microporous structure 13 has through holes with different flow areas, thereby forming different forms of airflow channels when different heating elements 11 are combined. Moreover, between adjacent heating elements 11, at least some of the through holes are staggered, that is, the through holes on the outer heating element 11 and the through holes on the inner heating element 11 are not concentrically arranged, but may only partially overlap, in order to change the flow area of ​​the formed airflow channels and guide the airflow to move in different directions. On the one hand, this is beneficial to enhance the adsorption effect, and on the other hand, it can also extend the movement path of the airflow inside the main heating element 1, so that the airflow can be fully heated, which is beneficial to enhance the heating effect.

[0041] It should be noted that between two adjacent heating tubes 11, there may be some through holes that do not overlap at all, meaning that these through holes are in a closed state to guide airflow through other airflow channels.

[0042] Furthermore, in a specific implementation, such as Figure 4 In the example shown, on the same heating element 11, at least two types of through holes in the microporous structure 13 are alternately arranged in the first direction, for example... Figure 3 The first through hole 131 and the second through hole 132 shown are alternately arranged in the first direction so that the distribution of different through holes in the first direction is relatively dispersed, which is beneficial to guiding the airflow to disperse.

[0043] Furthermore, in another specific implementation, such as Figure 4 As shown, on the same heating element 11, at least two types of through holes in the microporous structure 13 are alternately arranged in the circumferential direction of the heating element 11, for example... Figure 3 The second through hole 132 and the third through hole 133 shown are alternately arranged in the circumferential direction so that the distribution of different through holes in the circumferential direction is relatively dispersed, which is beneficial to guiding the airflow to disperse.

[0044] It should be noted that the types of through holes are not limited to the three types shown in the figure, and more types can be set according to different sizes; different types of through holes can also be alternately arranged in the first direction and the circumferential direction at the same time. In addition, in the above embodiment, whether in the first direction or in the circumferential direction of the heating tube 11, the different through holes that are alternately arranged can be arranged at the same spacing, or they can be arranged according to different spacings.

[0045] Furthermore, in one specific embodiment, such as Figure 4 and Figure 5 In the example, the through holes on two adjacent heating tubes 11 have different pore sizes, so that the microporous structure 13 between the multilayer heating tubes 11 can form different combinations through the through holes with different pore sizes, forming multiple different airflow channels as a whole, which is beneficial to further enhance the adsorption capacity.

[0046] Furthermore, in yet another specific implementation, such as Figure 4 and Figure 5In the example shown, the through-holes on two adjacent heating tubes 11 are arranged differently, making it difficult for the through-holes of the microporous structure 13 on the nested heating tubes 11 to form a completely interconnected structure. It is understandable that if the through-hole arrangements of the microporous structure 13 on different heating tubes 11 are exactly the same, it is possible that at a certain angle, the microporous structures 13 of the two layers of heating tubes 11 could form a one-to-one correspondence, allowing the through-holes to be interconnected, and airflow to pass through quickly, resulting in a decrease in overall heating effect and adsorption capacity. However, by using the arrangement of different through-hole arrangements in the microporous structure 13 between adjacent heating tubes 11, the above situation can be effectively prevented.

[0047] In further embodiments of this application, such as Figures 1 to 5 As shown, among the multiple heating tubes 11 of the main heating element 1, the outermost heating tube 11 is the first heating tube 111, and the remaining heating tubes 11 are all located inside the first heating tube 111, that is, the first heating tube 111 completely covers the other heating tubes 11. Therefore, the outer contour of the first heating tube 111 is the outer contour of the main heating element 1, which facilitates assembly. In the first direction, one end of the first heating tube 111 forms an insertion part 112, and the insertion part 112 has a spike structure. When penetrating into the aerosol generating rod, the spike structure can pierce the aerosol generating rod to guide the main heating element 1, reduce the resistance during the penetration process, and allow the main heating element 1 to penetrate into the aerosol generating rod more smoothly. The pin structure 2 is connected to the outer wall of the first heating tube 111, which can make full use of the outer space to connect and arrange the pin structure 2, prevent interference or obstruction with other heating tubes 11 in the first heating tube 111, and facilitate processing and manufacturing. The pin structure 2 extends away from the penetration part 112 so that when applied to an aerosol generation device, the pin structure 2 can extend to the power supply component and form an electrical connection with the corresponding electrode.

[0048] Specifically, the insertion part 112 can be adopted as follows: Figure 1 The tapered spike structure shown in the diagram allows the cross-sectional area of ​​the insertion portion 112 to gradually increase from the top to the bottom, gradually connecting with the circumferential outer edge of the first heating tube 111 to form a smooth transition structure, avoiding protrusions or bosses that would increase resistance during insertion. Additionally, the pin structure 2 can be configured as follows... Figure 1 The two shown are for connecting the positive and negative electrodes of the power supply component, respectively.

[0049] In further embodiments of this application, such as Figure 1 , Figure 5 and Figure 6As shown, among the multiple heating tubes 11 of the main heating element 1, the innermost heating tube 11 is the second heating tube 113, and a liquid accumulation groove 1131 is formed inside the second heating tube 113. When the airflow passes through the microporous structure 13, the aerosol residue adsorbed by the microporous structure 13 can flow into the liquid accumulation groove 1131 of the second heating tube 113, achieving internal collection and thus preventing the aerosol residue from accumulating on the surface of the main heating element 1 or at the through-holes of the microporous structure 13. It can be understood that the aerosol residue is usually an oily substance left behind by the incomplete atomization of the atomizing matrix, which generally becomes viscous after cooling. If the aerosol residue adheres to the through-holes of the microporous structure 13, it can easily cause blockage of the through-holes. If the aerosol residue adheres to the surface of the main heating element 1, it will affect the heat conduction during heating. In existing aerosol generating equipment, in order to ensure normal use, users need to clean the heating element 100 in a timely manner to remove the accumulated aerosol residue, which increases the maintenance and cleaning process, making it inconvenient to use and affecting the user experience.

[0050] In this embodiment, by providing a liquid accumulation tank 1131 in the second heating tube 113 to contain aerosol residue, compared with the prior art, it can effectively prevent aerosol residue from accumulating on the outer surface of the main heating element 1 or at the through holes of the microporous structure 13, thereby significantly reducing the impact of aerosol residue on the heating element 100, and also reducing or eliminating the need for user cleaning operations, which is beneficial to improving the user experience.

[0051] Specifically, such as Figures 5 to 7 In the example shown, in the first direction, at least one end of the liquid collection tank 1131 is a closed structure. When both ends of the liquid collection tank 1131 are closed structures, the outward flow of aerosol residue contained in the liquid collection tank 1131 can be prevented. In this case, there is an upper limit to the amount of aerosol residue that the liquid collection tank 1131 can contain, and it can be reused by replacement or appropriate cleaning operations. When one end of the liquid collection tank 1131 is a through structure, for example... Figure 6 The bottom of the collection tank 1131 shown is open, allowing the aerosol residue contained in the collection tank 1131 to be discharged from the bottom. When applied to aerosol generating equipment, a corresponding collection container can be installed inside the main housing of the aerosol generating equipment. The collection container is connected to the collection tank 1131, so that the aerosol residue can be guided into the collection container by the collection tank 1131, thereby increasing the collection capacity. Alternatively, the collection container can be removed and replaced as needed, or the aerosol residue in the collection container can be discharged to achieve reuse. In practical applications, the configuration can be tailored according to the specific structure of the aerosol generating equipment and actual usage requirements.

[0052] It should be noted that, in practical applications, the shape of the liquid collection tank 1131 is not limited to the shape shown in the figure. Figure 6The structure shown extends in a straight line along the first direction. The liquid collection tank 1131 can also be configured in other shapes, such as a serpentine or spiral extension, to increase the liquid storage capacity.

[0053] Furthermore, in one specific embodiment, such as Figures 1 to 3 In the example, the main heating element 1 adopts a cylindrical structure. When inserted into the aerosol generating rod, the distance from the centerline of the main heating element 1 to the outer wall is equal in any direction in the circumferential direction, resulting in relatively uniform heating. The multiple heating tubes 11 of the main heating element 1 all adopt a hollow cylindrical tube structure, which facilitates processing and assembly. Moreover, during the nested assembly of the heating tubes 11, the heating tubes 11 can be rotated as needed to adjust the angle, allowing different combinations of the microporous structures 13 on the different heating tubes 11. Correspondingly, the insertion part 112 can adopt a conical structure adapted to the main heating element 1.

[0054] Furthermore, in another specific embodiment, such as Figure 8 In the example, at least a portion of the main heating element 1 adopts a conical structure, and the diameter of the main heating element 1 gradually decreases in the direction approaching the insertion portion 112 along the first direction, i.e., in Figure 8 In this design, the diameter of the main heating element 1 gradually decreases from bottom to top, making the upper part of the main heating element 1 relatively thinner to facilitate insertion into the aerosol generating rod. The multiple heating tubes 11 of the main heating element 1 all adopt corresponding conical tube structures to fit the overall structure. Furthermore, during the nested assembly of the heating tubes 11, the heating tubes 11 can be rotated as needed to adjust the angle, allowing different combinations of the microporous structures 13 on the different heating tubes 11.

[0055] Specifically, the main heating element 1 can be adopted as follows: Figure 8 The two-section structure shown is such that the angle of inclination of the generatrix of the main heating element 1 insertion part 112 is different from that of the rest. Of course, the main heating element 1 can also adopt a one-piece structure, that is, the angle of inclination of the generatrix of the main heating element 1 insertion part 112 is the same as that of the rest, so that the main heating element 1 forms an integral conical structure.

[0056] Furthermore, in one specific embodiment, such as Figure 3 and Figure 4As shown, in any two adjacent heating tubes 11 of the main heating element 1, the outer diameter of the inner heating tube 11 is equal to the inner diameter of the outer heating tube 11. After the heating tubes 11 are nested and assembled, the inner wall of the outer heating tube 11 can abut against the outer wall of the inner heating tube 11 and maintain contact and coverage in the circumferential direction. On the one hand, this ensures that the heating tubes 11 can make contact and conduct electricity so that they can both generate heat when energized. On the other hand, it promotes heat transfer and accelerates the heat transfer speed.

[0057] Furthermore, in another specific example, such as Figure 4 and Figure 5 As shown, among the multiple heating tubes 11 of the main heating element 1, at least two heating tubes 11 have equal dimensions in the first direction to maximize the heating area and the heat transfer contact area, thereby increasing the heat output and improving the heat transfer efficiency. Preferably, as shown... Figure 5 In the example, the dimensions of the remaining heating tubes 11 in the first heating tube 111 are all equal in the first direction, and are equal to the dimensions of the remaining part of the first heating tube 111 in the first direction except for the insertion part 112, so that the contact area between adjacent heating tubes 11 is maximized, and the heating area of ​​the other heating tubes 11 is also maximized within the limited space in the first heating tube 111.

[0058] In further embodiments of this application, such as Figures 1 to 7 In the example, the heating element 1 of the main heating body 1 uses a metal felt structure. This metal felt structure utilizes extremely fine interwoven metal fibers to form a microporous structure 13, which is a three-dimensional network structure. This microporous structure has advantages such as high porosity, large surface area, and uniform pore size distribution, resulting in strong filtration and adsorption capabilities. Furthermore, it is heat-resistant and suitable as a heating material. Multiple heating elements 11 are interconnected to form an integrated main heating body 1. Specifically, the heating elements 11 can be connected and fixed using a sintering method, resulting in high strength and eliminating the need for subsequent drilling, thus simplifying manufacturing. The metal felt structure can specifically be formed by sintering stainless steel metal fibers.

[0059] Of course, the metal felt structure shown above is only a preferred structural form of the main heating element 1. In practical applications, the heating tube 11 can also adopt other structural forms, such as opening holes in the metal tube and forming it by nesting multiple layers of metal tubes.

[0060] An embodiment of the second aspect of this application provides an aerosol generating device 400, such as... Figure 1 , Figure 9 and Figure 10As shown, the aerosol generating device 400 includes a main housing 410, a heating element 100 as described in any of the embodiments of the first aspect, and a power supply assembly 420. The main housing 410 serves as the mounting base for the aerosol generating device 400, and the heating element 100 and the power supply assembly 420 are both disposed inside the main housing 410. In the first direction, an insertion port 411 is provided at one end of the main housing 410, and a heating chamber 412 communicating with the insertion port 411 is provided inside the main housing 410. The aerosol generating rod 500 can pass through the insertion port 411 and be inserted into the heating chamber 412. The heating element 100 is disposed corresponding to the insertion port 411 along a first direction. At least a portion of the heating element 100 extends into the heating chamber 412, and the insertion portion 112 of the heating element 100 faces the insertion port 411. When the aerosol generating rod 500 is inserted into the heating chamber 412 along the first direction, the heating element 100 can penetrate into the interior of the aerosol generating rod 500 to heat the aerosol generating rod 500, causing the atomizing matrix inside to be heated and atomized, and generating aerosol. The power supply assembly 420 is electrically connected to the pin structure 2 of the heating element 100 to supply power to the heating element 100, enabling the heating element 100 to generate heat when energized.

[0061] During use, the heating element 100 of the aerosol generating device 400 is connected by multiple nested heating tubes to form the main heating body 1, which is inserted into the aerosol generating rod 500 for heating. The heating tubes have a microporous structure 13, which can transfer heat through contact and also create airflow between different heating tubes 11, thereby improving heat transfer efficiency, accelerating heating speed, shortening preheating time, ensuring the consistency of aerosol generation, and also using the microporous structure 13 to adsorb aerosol residue, effectively reducing aerosol residue on the surface of the main heating body 1, thus reducing or eliminating the need for cleaning operations by the user.

[0062] The following describes a specific example of the aerosol generating apparatus 400 of this application with reference to the accompanying drawings.

[0063] like Figures 1 to 10 As shown, the aerosol generating device 400 is specifically a heat-non-combustible device used to heat the aerosol generating rod 500. The aerosol generating device 400 includes a main housing 410, a heating element 100, and a power supply assembly 420. The height direction of the main housing 410 is a first direction, and an insertion port 411 is provided at the top of the main housing 410 in this first direction. A support structure 431 is provided inside the main housing 410, dividing the internal space of the main housing 410 into upper and lower chambers. A cup-shaped heating chamber 412 is provided in the upper chamber of the main housing 410. The top of the heating chamber 412 communicates with the insertion port 411, and a penetration hole 4121 is provided at the bottom of the heating chamber 412.

[0064] like Figure 10In the example, the heating element 100 is disposed in the upper cavity of the main unit housing 410. The heating element 100 is disposed in the heating cavity 412 away from the insertion port 411 along the first direction. One end of the heating element 100 with the insertion part 112 passes through the insertion hole 4121 and extends into the heating cavity 412. The end of the heating element 100 away from the insertion part 112 is connected and fixed to the bracket structure 431.

[0065] Specifically, such as Figures 1 to 6 As shown, the heating element 100 includes a main heating body 1 and a pin structure 2. The main heating body 1 includes a plurality of heating tubes 11 arranged in a nested manner, that is, in the first direction, the heating tubes 11 extend into the adjacent heating tubes 11 in sequence, forming a multi-layered structure with inner and outer nesting. The heating tubes 11 are cylindrical structures formed by metal felt structures, with the outermost heating tube 11 being the first heating tube 111 and the innermost heating tube 11 being the second heating tube 113. In the first direction, the top end of the first heating tube 111 is provided with an insertion part 112, which has a conical spike structure for piercing the aerosol generating rod 500. The remaining heating tubes 11 in the first heating tube 111 have the same size in the first direction, and are equal to the size of the remaining part of the first heating tube 111 in the first direction except for the insertion part 112. In any two adjacent heating tubes 11, the outer diameter of the inner heating tube 11 is equal to the inner diameter of the outer heating tube 11, so that the inner wall of the outer heating tube 11 can abut against the outer wall of the inner heating tube 11 and maintain contact and surround coverage in the circumferential direction. When any heating tube 11 is energized, the adjacent heating tubes 11 can make contact, conduct electricity and generate heat, thereby making the main heating body 1 heat up as a whole. There are two pin structures 2, both connected to the outer wall of the first heating tube 111 at a position away from the insertion part 112. The two pin structures 2 are symmetrically arranged on both sides of the first heating tube 111 and both extend away from the insertion part 112.

[0066] Each heating element 11 has a microporous structure 13 formed by interwoven metal fibers. The microporous structure 13 includes multiple through holes of different pore sizes, and each type of through hole is present in multiple quantities. On the same heating element 11, at least two types of through holes in the microporous structure 13 are alternately arranged in a first direction, for example... Figure 3 The first through-hole 131 and the second through-hole 132 are shown in the figure. Meanwhile, at least two types of through-holes in the microporous structure 13 are alternately arranged in the circumferential direction of the heating tube 11, for example... Figure 3 The second through hole 132 and the third through hole 133 are shown in the figure.

[0067] Correspondingly, the through holes on two adjacent heating tubes 11 have different aperture sizes and different arrangement patterns. Furthermore, between two adjacent heating tubes 11, at least different through holes of the microporous structure 13 are staggered, and at least some through holes are interconnected. This allows the microporous structure 13 between the multilayer heating tubes 11 to form different combinations through through holes of different aperture sizes, arrangement patterns, and relative positions, so that the main heating element 1 as a whole forms multiple different airflow channels. Moreover, since the microporous structure 13 is formed by interwoven metal fibers, the distribution of different types of through holes is relatively uniform, thus having a strong filtration and adsorption capacity.

[0068] A liquid accumulation tank 1131 is formed inside the second heating element 113, extending along the first direction. When airflow passes through the microporous structure 13, the aerosol residue adsorbed by the microporous structure 13 can flow into the liquid accumulation tank 1131 of the second heating element 113, thereby preventing the aerosol residue from accumulating on the surface of the main heating element 1 or at the through-holes of the microporous structure 13. At least one end of the liquid accumulation tank 1131 in the first direction is a closed structure. In practical applications, a collection container connected to the bottom of the liquid accumulation tank 1131 can be provided inside the main housing 410 to guide the aerosol residue into the collection container. The collection container can then be removed and replaced as needed, or the aerosol residue in the collection container can be drained for reuse.

[0069] like Figure 10 In the example, the power supply assembly 420 is disposed in the lower cavity of the main unit housing 410. The power supply assembly 420 has a battery 421 and an electronic control board 422 that are electrically connected. The two pin structures 2 of the heating element 100 extend through the bracket structure 431 to the top of the battery 421 and are electrically connected to the positive electrode and the negative electrode on the battery 421, respectively, so as to supply power to the heating element 100 through the battery 421, so that the heating element 100 can generate heat when powered on. The electronic control board 422 has a control circuit for controlling the power supply state of the battery 421.

[0070] When the aerosol generating rod 500 is inserted into the heating chamber 412 through the insertion port 411, the heating element 100, guided by the insertion part 112, penetrates into the aerosol generating rod 500 and heats it, causing the atomizing matrix stored inside the aerosol generating rod 500 to be atomized and generate aerosol. At this time, there is a certain gap between the side wall and bottom wall of the heating chamber 412 and the aerosol generating rod 500, allowing external air to flow into the heating chamber 412 through this gap. Figure 10As shown by the dashed arrow, when the user performs a suction action on the aerosol generating rod 500, air in the heating chamber 412 is drawn into the aerosol generating rod 500 under negative pressure, mixes with the generated aerosol to form an aerosol mixture, and flows towards the suction end of the aerosol generating rod 500. The aerosol mixture can pass through the microporous structure 13 on the heating element 100, thereby promoting heat conduction and accelerating heating. Simultaneously, residual aerosol liquid in the aerosol mixture can be adsorbed by the microporous structure 13 and ultimately flows into the liquid collection tank 1131, achieving filtration and adsorption effects.

[0071] The aerosol generating device 400 in this embodiment can effectively improve the heat transfer efficiency of the heating element 100, and the heating speed is fast, which can shorten the preheating time, ensure sufficient aerosol content in the aerosol mixture gas generated by atomization, and ensure the consistency of aerosol generation. In addition, the microporous structure 13 also has an adsorption effect on aerosol residue, which can effectively reduce the aerosol residue on the surface of the main heating element 1, thereby reducing or eliminating the need for users to perform cleaning operations, which is conducive to improving the user experience.

[0072] Furthermore, the aerosol generating device 400 in this embodiment also has all the beneficial effects of the heating element 100 in any of the above embodiments, which will not be repeated here.

[0073] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A heat generating member, characterized by comprising: include: The main heating element includes a plurality of nested heating tubes, each heating tube being conductive and extending along a first direction into an adjacent heating tube. The adjacent heating tubes abut against each other, and each heating tube has a microporous structure on its sidewall. The microporous structures on two adjacent heating tubes are at least partially connected. And a pin structure, the pin structure being connected to the main heating element, the pin structure being used to electrically connect to the power supply component so that the main heating element heats up when powered on; The main heating element has an insertion portion at one end in a first direction, and the insertion portion is configured to penetrate into the interior of the aerosol generating rod.

2. The heating element according to claim 1, characterized in that, Each of the heating elements has a microporous structure comprising at least two types of through holes with different pore sizes, and each type of through hole is present in multiple quantities. Among them, at least some of the through holes between two adjacent heating tubes are staggered.

3. The heating element according to claim 2, characterized in that, At least two types of through holes on the same heating element are alternately arranged in a first direction; and / or, At least two types of through holes on the same heating element are alternately arranged in the circumferential direction of the heating element.

4. The heating element according to claim 2, characterized in that, The diameters of the through holes on two adjacent heating tubes (inner and outer) are different; and / or, The arrangement of the through holes on two adjacent heating tubes is different.

5. The heating element according to claim 1, characterized in that, The heating tube located on the outermost side of the main heating element is the first heating tube, and the remaining heating tubes are all located inside the first heating tube. The insertion portion is located at one end of the first heating element and forms a spike structure. The pin structure is connected to the outer wall of the first heating element and extends away from the insertion portion.

6. The heating element according to claim 1, characterized in that, The innermost heating tube located on the main heating element is a second heating tube. A liquid accumulation groove extending along a first direction is formed inside the second heating tube. The liquid accumulation groove is used to contain aerosol residue, and at least one end of the liquid accumulation groove in the first direction is a closed structure.

7. The heating element according to claim 1, characterized in that, The main heating element has a cylindrical structure; or, At least a portion of the main heating element is a conical structure, and the diameter of the main heating element gradually decreases in the direction approaching the insertion portion along the first direction.

8. The heating element according to claim 1, characterized in that, For any two adjacent heating elements, the outer diameter of the inner heating element is equal to the inner diameter of the outer heating element; and / or, Of the plurality of heating elements, at least two of the heating elements are of equal size in a first direction.

9. The heating element according to any one of claims 1 to 8, characterized in that, The heating element is a metal felt structure, and adjacent heating elements are connected in sequence to form an integral structure.

10. An aerosol-generating device comprising, include: The main unit housing has an insertion port at one end in a first direction, and the main unit housing has a heating cavity communicating with the insertion port. The heating element as described in any one of claims 1 to 9, wherein the heating element is disposed within the main housing along a first direction, at least a portion of the heating element extends into the heating cavity, and the insertion portion faces the insertion port; The power supply component is disposed in the main housing and electrically connected to the pin structure of the heating element to supply power to the heating element.

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