Heating assembly and electronic atomization device

Abstract

The invention discloses a heating assembly and an electronic atomization device. The heating assembly comprises a porous body, a heating body and a soaking body. The porous body is provided with a first surface and a second surface which are oppositely arranged in the first direction, the second surface is provided with a first area and a second area, and the first area is arranged around the periphery of the second area; the heating body is arranged on the first surface; the soaking body comprises a side wall part and an end wall part, the side wall part is arranged on the peripheral side face of the porous body, the end wall part extends to the second surface from the side wall part, the projection of at least part of the end wall part in the first direction of the porous body is located in the first area, and the projection of at least part of the heating body in the first direction of the porous body is located in the second area. The side wall part is further provided with a limiting structure connected with the porous body, and the limiting structure and the end wall part are arranged on the side wall part at intervals in the first direction. According to the scheme, the connection firmness of the soaking body and the porous body can be improved, and the soaking body is prevented from being separated from the porous body.

Description

Technical Field

[0001] This application relates to the field of electronic atomization technology, and in particular to a heating component and an electronic atomization device. Background Technology

[0002] The heating element of an electronic atomizing device is used to heat and atomize the atomizing medium to form an aerosol for users to inhale. Typically, the atomizing medium is absorbed by a porous body in the heating element. After the porous body is heated, the atomizing medium adsorbed in the porous body can be heated and atomized.

[0003] Due to factors such as the material, thermal conductivity, heating element, and arrangement of the heating element in the porous body, uneven temperature distribution exists at the contact surface between the porous body and the atomizing medium. For atomizing media with high viscosity and poor flowability, uneven heating occurs on the porous body surface, leading to inconsistent consumption rates and potential overheating in high-temperature areas, resulting in a burnt taste and affecting the user experience. Related technologies can incorporate a homogenizing element integrally molded with the porous body, utilizing its homogenizing effect to achieve a uniform temperature distribution on the porous body surface. However, because the porous body and the homogenizing element are made of different materials, they have different shrinkage rates during molding, resulting in poor bonding and the homogenizing element easily detaching from the porous body. Summary of the Invention

[0004] To solve at least one of the above-mentioned technical problems, this application provides a heating component and an electronic atomizing device, which can improve the connection between the heat exchanger and the porous body and prevent the heat exchanger from detaching from the porous body. The technical solution adopted is as follows.

[0005] The heating assembly provided in the first aspect of this application includes a porous body, a heating element, and a heat spreader. The porous body has a first surface and a second surface disposed opposite each other along a first direction. The second surface has a first region and a second region, with the first region arranged around the outer periphery of the second region. The heating element is disposed on the first surface. The heat spreader includes a sidewall portion and an endwall portion. The sidewall portion is disposed on the outer peripheral side surface of the porous body, and the endwall portion extends from the sidewall portion to the second surface. The endwall portion at least partially overlaps with the projection of the first region along the first direction of the porous body, and the heating element at least partially overlaps with the projection of the second region along the first direction of the porous body. The sidewall portion also has a limiting structure connected to the porous body, and the limiting structure and the endwall portion are spaced apart on the sidewall portion along the first direction.

[0006] In some embodiments of this application, the limiting structure includes a first snap-fit ​​portion disposed on the inner side of the side wall portion, and a second snap-fit ​​portion is provided on the outer peripheral side of the porous body corresponding to the first snap-fit ​​portion, wherein the first snap-fit ​​portion and the second snap-fit ​​portion are engaged and connected.

[0007] In some embodiments of this application, the first engaging portion is a engaging protrusion, the second engaging portion is a engaging groove, and the limiting structure includes a plurality of the engaging protrusions, which are spaced apart along the outer periphery of the porous body; or

[0008] The first snap-fit ​​portion is a snap-fit ​​protrusion, which is continuously arranged along the outer periphery of the porous body.

[0009] In some embodiments of this application, the limiting structure includes a claw disposed at one end of the side wall portion away from the end wall portion, the claw being bent toward the center of the porous body, the claw being embedded in the porous body, or the claw abutting against the edge of the first surface.

[0010] In some embodiments of this application, the end wall portion includes an annular wall, which is disposed around the outer periphery of the second surface and has a first hollow groove formed on the second surface, the first hollow groove being disposed corresponding to the second region.

[0011] In some embodiments of this application, the end wall portion further includes an extension wall that extends from the inner edge of the annular wall into the first hollow groove.

[0012] In some embodiments of this application, the end wall portion includes a plurality of the extended walls, which are spaced apart circumferentially along the annular wall.

[0013] In some embodiments of this application, the end wall portion further includes a connecting wall disposed in the first hollow groove, and the ends of the plurality of extended walls away from the annular wall are all connected to the connecting wall.

[0014] In some embodiments of this application, the connecting wall is provided with a second hollow groove, and the second hollow groove is not connected to the first hollow groove.

[0015] In some embodiments of this application, the second surface is provided with a mounting step, and the end wall portion is disposed in the mounting step so that the end wall portion is flush with the second surface, or the second surface protrudes from the end wall portion.

[0016] In some embodiments of this application, the limiting structure includes an annular limiting wall bent toward the first surface, the annular limiting wall being disposed around the outer periphery of the first surface, the annular limiting wall being embedded in the porous body, or the annular limiting wall abutting against the edge of the first surface.

[0017] In some embodiments of this application, a short-circuit protection distance is provided between the end of the sidewall portion facing the first surface and the first surface along the first direction of the porous body.

[0018] In some embodiments of this application, the outer edge of the first surface is provided with a groove, and the sidewall portion protrudes from the bottom wall of the groove along a first direction of the porous body.

[0019] In some embodiments of this application, the heating assembly further includes a pot body with a receiving cavity formed therein, and the pot body is fitted around the outer periphery of the heat spreader so that the second surface communicates with the receiving cavity.

[0020] Secondly, this application also provides an electronic atomizing device, including a main body and a heating component provided in the first aspect, wherein the heating component is disposed within the main body, the main body includes an air inlet, an air outlet and an airflow channel connecting the air inlet and the air outlet, and the first surface of the porous body is connected to the airflow channel.

[0021] The embodiments of this application have at least the following beneficial effects: By providing a limiting structure on the sidewall portion and connecting the limiting structure with the porous body, the connection area and connection points between the heat exchanger and the porous body can be increased, thereby enhancing the connection strength between them. When shrinkage occurs during the sintering and molding of the porous body, the limiting structure can provide a connecting effect, holding the heat exchanger firmly to the outer peripheral side or first surface of the porous body, improving the connection strength between the heat exchanger and the porous body, preventing the heat exchanger from detaching from the porous body, and improving the yield and productivity of the heating assembly. Attached Figure Description

[0022] The aspects and advantages described and / or added to the embodiments of this application will become apparent and readily understood in conjunction with the following drawings. It should be noted that the embodiments illustrated in the following drawings are exemplary and are used only to explain this application, and should not be construed as limiting this application.

[0023] Figure 1 A schematic diagram of the structure of a heating assembly provided in an embodiment of this application from a first perspective;

[0024] Figure 2 A schematic diagram of the structure of a heating assembly provided in an embodiment of this application from a second perspective;

[0025] Figure 3 An exploded view of the heating assembly provided in an embodiment of this application;

[0026] Figure 4 for Figure 1 AA cross-section view;

[0027] Figure 5 A schematic diagram of a first example of the limiting structure of the heating component provided in an embodiment of this application;

[0028] Figure 6 for Figure 5 CC cross-section;

[0029] Figure 7 An exploded view of a first example of a limiting structure for a heating assembly provided in an embodiment of this application;

[0030] Figure 8 A schematic diagram of a second example of the limiting structure of the heating component provided in the embodiments of this application;

[0031] Figure 9 for Figure 8 DD cross-section;

[0032] Figure 10 An exploded view of a second example of a limiting structure for a heating assembly provided in an embodiment of this application;

[0033] Figure 11 A schematic diagram of a third example of the limiting structure of the heating component provided in the embodiments of this application;

[0034] Figure 12 for Figure 11 EE cross-section;

[0035] Figure 13 An exploded view of a third example of a limiting structure for a heating assembly provided in an embodiment of this application;

[0036] Figure 14 A schematic diagram of the structure of a first example of the end wall portion of the heating assembly provided in an embodiment of this application;

[0037] Figure 15 A schematic diagram of a second example of the end wall portion of the heating assembly provided in an embodiment of this application;

[0038] Figure 16 A schematic diagram of a third example of the end wall portion of the heating assembly provided in an embodiment of this application;

[0039] Figure 17 A schematic diagram of a fourth example of the end wall portion of the heating assembly provided in the embodiments of this application;

[0040] Figure 18 A schematic diagram of a fifth example of the end wall portion of the heating assembly provided in an embodiment of this application;

[0041] Figure 19 for Figure 4 A magnified view of section B;

[0042] Figure 20 A schematic diagram of the structure of a heating element of a heating assembly provided in an embodiment of this application;

[0043] Figure 21 A schematic diagram of a second example of the heating element of the heating assembly provided in this application embodiment;

[0044] Figure 22 A schematic diagram of a third example of the heating element of the heating assembly provided in this application embodiment;

[0045] Figure 23 A schematic diagram of a fourth example of the heating element of the heating assembly provided in this application embodiment;

[0046] Figure 24 A schematic diagram of a second example of a heating assembly provided in an embodiment of this application;

[0047] Figure 25 for Figure 24 FF cross-section.

[0048] Figure label:

[0049] 100. Heating components;

[0050] 10. Porous body; 11. First surface; 111. Groove; 12. Second surface; 121. First region; 122. Second region; 123. Mounting step;

[0051] 20. Heating element; 21. Electrode section; 22. Heating section; 221. Cutout; 222. Connection point; 23. Pin; 24. First heating segment; 25. Second heating segment;

[0052] 30. Heat spreader; 31. Side wall portion; 311. Limiting structure; 3111. First locking portion; 3112. Second locking portion; 3113. Claw; 3114. Annular limiting wall; 32. End wall portion; 321. Annular wall; 3211. First hollow groove; 322. Extension wall; 323. Connecting wall; 3231. Second hollow groove;

[0053] 40. Pot body; 41. Containing cavity. Detailed Implementation

[0054] The following is combined with Figures 1 to 25The embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0055] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0056] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0057] Firstly, please refer to Figures 1 to 4This application provides a heating assembly 100, including a porous body 10, a heating element 20, and a heat spreader 30. The porous body 10 has a first surface 11 and a second surface 12 disposed opposite each other along a first direction. The second surface 12 has a first region 121 and a second region 122, with the first region 121 arranged around the outer periphery of the second region 122. The heating element 20 is disposed on the first surface 11. The heat spreader 30 includes a sidewall portion 31 and an endwall portion 32. The sidewall portion 31 is disposed on the outer peripheral side of the porous body 10, and the endwall portion 32 extends from the sidewall portion 31 to the second surface 12. The projection of the endwall portion 32 and the first region 121 along the first direction of the porous body 10 at least partially overlaps, and the projection of the heating element 20 and the second region 122 along the first direction of the porous body 10 at least partially overlaps. The sidewall portion 31 is also provided with a limiting structure 311 connected to the porous body 10. The limiting structure 311 and the endwall portion 32 are spaced apart on the sidewall portion 31 along the first direction z. By providing a limiting structure 311 on the sidewall portion 31 and connecting it to the porous body 10, the connection area and connection points between the heat exchanger 30 and the porous body 10 can be increased, thereby enhancing the connection strength between them. When shrinkage occurs during the sintering process of the porous body 10, the limiting structure 311 can provide a connection, holding the heat exchanger 30 firmly to the outer peripheral side or first surface 11 of the porous body 10, improving the connection strength between the heat exchanger 30 and the porous body 10, preventing the heat exchanger 30 from detaching from the porous body 10, and improving the yield and productivity of the heating assembly 100.

[0058] It is understandable that when the heating element 20 is heated, its heat can travel along the first direction of the porous body 10 (e.g., Figure 4 The heat is transmitted from the first surface 11 to the second region 122 of the second surface 12 in the z direction (as shown). The second region 122 of the second surface 12 is heated first, while the first region 121 located on the outer periphery of the second region 122 is heated relatively slowly. Using the heat exchanger 30 provided in this application, the heat from the first surface 11 of the porous body 10 can be transferred along the outer peripheral side of the porous body 10 to the second surface 12 through the sidewall portion 31 of the heat exchanger 30. Furthermore, the heat can be quickly transferred to the first region 121 of the second surface 12 through the endwall portion 32 of the heat exchanger 30, thereby increasing the speed at which heat is transferred from the heating element 20 to the first region 121. This results in a more uniform temperature field distribution between the first region 121 and the second region 122 of the second surface 12, allowing the atomized medium on the second surface 12 to be consumed at a uniform rate. This prevents the problem of burnt smell caused by localized high temperature in the second region 122 (central region) of the second surface 12, or the problem of residual atomized medium due to insufficient temperature in the first region 121 (peripheral region), thus improving the heating effect of the heating component 100 and the user experience.

[0059] Optionally, the porous body 10 can be porous ceramics, porous glass, or other synthetic or natural materials with porous structures.

[0060] In some embodiments, the thermal conductivity of the heat exchanger 30 is much greater than that of the porous body 10. This allows the rapid heat conduction of the heat exchanger 30 to be quickly transferred from the first surface 11 of the porous body 10 to the first region 121 of the second surface 12 of the porous body 10. This shortens the heating time difference between the first region 121 and the second region 122 of the second surface 12, resulting in a more uniform heating rate across the second surface 12 and a more uniform temperature field distribution. In some specific examples, the thermal conductivity of the heat exchanger 30 is 5 to 25 times that of the porous body 10; for example, the thermal conductivity of the heat exchanger 30 is 5, 10, 15, 20, or 25 times that of the porous body 10.

[0061] In some specific examples, the thermal conductivity of the porous body 10 is 0.8–2.5 W / (m·K), and the heat spreader 30 can be made of a hard metal material, such as stainless steel or other alloys. It is understood that in other embodiments, the heat spreader 30 can also be other non-metallic hard materials.

[0062] For example, the porous body 10 can be cylindrical, blocky, prismatic, etc., that is, the cross-sectional shape of the porous body 10 can be circular, rectangular, polygonal, elliptical, or other irregular shapes. Taking a cylindrical or prismatic shape as an example, the first direction of the porous body 10 refers to the axial direction of the cylinder or prism. Alternatively, when the porous body 10 adopts a flat, disc-like structure, the first direction refers to the thickness direction of the disc. Or, when the porous body 10 adopts a blocky or irregular structure, the first direction refers to the thickness direction of the blocky structure. It can be understood that the second surface 12 is used to contact the atomizing medium so that the atomizing medium penetrates into the interior of the porous body 10. The first surface 11 is used to house the heating element 20. When the atomizing medium penetrates into the first surface 11 inside the porous body 10, the heating element 20 is energized and heats up, thereby heating and atomizing the atomizing medium to form an aerosol. Therefore, the first direction can also be understood as the direction in which the atomizing medium moves within the pores of the porous body 10.

[0063] For example, when the porous body 10 is cylindrical (e.g. Figures 1 to 4 As shown), when the structure is in the form of a disc or a prism, the first surface 11 and the second surface 12 are parallel to each other, so that there are approximately equal heat conduction paths from the first surface 11 to the second surface 12. That is, the speed at which heat is transferred from each part of the first surface 11 to the second surface 12 along the first direction z is approximately the same.

[0064] Exemplarily, the first region 121 and the second region 122 of the second surface 12 are relative. The second region 122 refers to the central region of the second surface 12. Typically, the heating element 20 is disposed in the central region of the first surface 11, and the projection of the heating element 20 on the second surface 12 is located in the second region 122. The first region 121 refers to the peripheral region of the second surface 12 near its outer edge, and the projection of the heating element 20 on the second surface 12 typically does not fall into the first region 121. Taking the porous body 10 as a cylindrical shape as an example, the center of the second surface 12 is located in the second region 122, and the first region 121 is the region away from the center. Optionally, the second region 122 can typically be in direct contact with the atomizing medium, and the atomizing medium penetrates into the pore structure of the second region 122 of the porous body 10 through permeation. The first region 121 can be partially covered by the end wall portion 32. In this case, the atomizing medium can penetrate into the porous body 10 from the uncovered part of the first region 121. Alternatively, if the first region 121 is completely covered by the end wall portion 32, the atomizing medium will not penetrate into the porous body 10 from the first region 121.

[0065] The following will use the example of a porous body 10 being cylindrical to provide further explanation.

[0066] Optionally, the projections of the end wall portion 32 and the first region 121 onto the second surface 12 can be either completely overlapping or partially overlapping. When partially overlapping, the projection of the non-overlapping portion of the end wall portion onto the second surface 12 is located in the second region 122. Similarly, the projections of the heating element 20 and the second region 122 onto the second surface 12 can be either completely overlapping or partially overlapping. When partially overlapping, the projection of the non-overlapping portion of the heating element 20 onto the second surface 12 is located in the first region 121.

[0067] Optionally, the limiting structure 311 can be connected to either the first surface 11 or the outer peripheral side of the porous body 10, or it can be connected to both the first surface 11 and the outer peripheral side simultaneously; no limitation is made here. By setting different structural forms of the limiting structure 311 of the heat exchanger 30, the connection stability between the heat exchanger 30 and the porous body 10 can be further improved. The different configurations of the limiting structure 311 will be described in detail below.

[0068] In the first example, please refer to Figures 5 to 7The limiting structure 311 includes a first engaging portion 3111 disposed on the inner side of the side wall portion 31, and a second engaging portion 3112 disposed on the outer peripheral side of the porous body 10 corresponding to the first engaging portion 3111. The first engaging portion 3111 and the second engaging portion 3112 are engaged and connected. By disposing the limiting structure 311 on the inner side of the side wall portion 31, a firm connection between the heat spreader 30 and the porous body 10 can be achieved without affecting the first surface 11 and the second surface 12 of the porous body 10. The first surface 11 of the porous body 10 can have more space to accommodate the heating element 20, and the second surface 12 of the porous body 10 can also have more space to absorb the atomizing medium, ensuring that the porous body 10 has sufficient liquid absorption area.

[0069] For example, the first snap-fit ​​portion 3111 and the second snap-fit ​​portion 3112 can be snap-fit ​​protrusions and snap-fit ​​grooves, respectively. The snap-fit ​​protrusions and snap-fit ​​grooves can snap into each other, thereby improving the connection strength between the heat exchanger 30 and the porous body 10 and preventing the heat exchanger 30 from coming out of the porous body 10. Furthermore, multiple snap-fit ​​protrusions can be arranged at intervals along the circumference of the sidewall portion 31, that is, the snap-fit ​​protrusions are arranged at intervals in a dotted manner, and the intervals between multiple snap-fit ​​protrusions are equal, thereby making the engagement between the first snap-fit ​​portion 3111 and the second snap-fit ​​portion 3112 smoother. Of course, in another example, the snap-fit ​​protrusions can also be continuously arranged along the outer periphery of the porous body 10, that is, the snap-fit ​​protrusions are arranged in the form of snap-fit ​​rings, which can further increase the contact area between the limiting structure 311 and the porous body 10 and improve the firmness of the connection. Whether the snap-fit ​​protrusions adopt an intermittent dot structure or a continuous ring structure, they can improve the circumferential connection strength of the heat exchanger 30. Even if the porous body 10 shrinks unevenly during the molding process, the circumferentially arranged snap-fit ​​protrusions can provide sufficient connection and fastening force, thereby improving the connection reliability between the heat exchanger 30 and the porous body 10.

[0070] In the second example, please refer to Figures 8 to 10 The limiting structure 311 includes a claw 3113 disposed at the end of the side wall portion 31 away from the end wall portion 32. The claw 3113 is bent toward the center of the porous body 10. The claw 3113 is embedded in the porous body 10, or the claw 3113 abuts against the edge of the first surface 11. By providing the claw 3113, the bent portion of the claw 3113 can provide an axial clamping force to the heat exchanger 30, preventing the heat exchanger 30 from detaching along the first direction z of the porous body 10. Since the porous body 10 is usually brittle and prone to cracking, providing the claw 3113 can also reduce the area of ​​the limiting structure 311 embedded in the porous body 10 while ensuring sufficient connection strength between the heat exchanger 30 and the porous body 10, thereby reducing the risk of cracking of the porous body 10.

[0071] Optionally, the sidewall portion 31 is provided with a plurality of claws 3113, which are spaced apart around the outer periphery of the porous body 10. By providing a plurality of claws 3113 along the circumferential direction, the circumferential connection strength of the heat exchanger 30 can be improved and the connection between the two can be made more stable, thereby improving the connection reliability between the heat exchanger 30 and the porous body 10.

[0072] In the third example, please refer to Figures 11 to 13 The limiting structure 311 includes an annular limiting wall 3114 bent toward the first surface 11. The annular limiting wall 3114 is arranged around the outer periphery of the first surface 11. The annular limiting wall 3114 is embedded in the porous body 10, or the annular limiting wall 3114 abuts against the edge of the first surface 11. By providing the annular limiting wall 3114, both circumferential and axial connection functions can be provided to the heat exchanger 30, thereby improving the connection strength between the heat exchanger 30 and the porous body 10.

[0073] Optionally, by setting different structural forms of the end wall portion 32 of the heat spreader 30, the uniformity of the temperature field on the second surface 12 can be further improved. The different configurations of the end wall portion 32 will be described in detail below.

[0074] In some embodiments, please refer to Figure 14 The end wall portion 32 includes an annular wall 321, which surrounds the outer periphery of the second surface 12 and has a first perforated groove 3211 formed therein. The first perforated groove 3211 corresponds to the second region 122. For example, the first perforated groove 3211 can be formed in the central region of the second surface 12. By providing the annular wall 321, it can be continuously arranged around the outer periphery of the second surface 12. Thus, when heat is transferred to the annular wall 321 by the side wall portion 31, the annular wall 321 can uniformly heat the first region 121, thereby making the temperature field distribution of the second surface 12 more uniform. By forming the first perforated groove 3211, the atomizing medium can penetrate into the porous body 10 through the first perforated groove 3211 and be further heated and atomized.

[0075] In some embodiments, please refer to Figure 15 In addition to the annular wall 321 provided in the end wall portion 32, the end wall portion 32 may also be provided with an extension wall 322, which extends from the inner edge of the annular wall 321 into the first hollow groove 3211. Using the extension wall 322, heat can be further transferred from the outer periphery of the second surface 12 to the center of the second surface 12, thereby making the temperature field of the second surface 12 more uniformly distributed in the radial direction.

[0076] In some embodiments, the end wall portion 32 includes a plurality of extending walls 322, which are spaced apart circumferentially along the annular wall 321. By providing a plurality of extending walls 322 circumferentially on the second surface 12, the temperature field on the second surface 12 can be more uniformly distributed circumferentially. Figure 15 For example, the end wall portion 32 is provided with four extension walls 322, which are evenly distributed along the circumference of the second surface 12.

[0077] In some embodiments, please refer to Figure 16 The end wall portion 32 also includes a connecting wall 323, which is disposed in the first hollow groove 3211. The ends of the plurality of extension walls 322 that are away from the annular wall 321 are all connected to the connecting wall 323. For example, any two extension walls 322 extend towards each other until they connect to each other at the connecting wall 323. By setting the connecting wall 323, the plurality of extension walls 322 can be connected to each other, which on the one hand can improve the structural strength and stability of the end wall portion 32 on the second surface 12 and avoid problems such as deformation caused by excessive extension of the extension walls 322. On the other hand, it can increase the coverage area of ​​the end wall portion 32 on the second surface 12, making the temperature field distribution on the second surface 12 more uniform. It can be understood that in this arrangement, the first hollow groove 3211 is divided into a plurality of hollow grooves by the connecting wall 323 and two adjacent extension walls 322. The shape of the hollow grooves can be an arc groove, a fan-shaped groove, a circular groove, a triangular groove, or an elliptical groove, etc.

[0078] In some embodiments, please refer to Figure 17 and Figure 18 The connecting wall 323 is provided with a second hollow groove 3231, and the first hollow groove 3211 and the second hollow groove 3231 are not connected to each other. By setting the second hollow groove 3231, the penetration area of ​​the atomizing medium on the second surface 12 can be increased, ensuring that the atomizing medium can smoothly penetrate into the porous body 10. By setting the second hollow groove 3231 and the first hollow groove 3211 to be not connected to each other, the structural strength and stability of the end wall 32 can be improved, avoiding the problem that the strength of the end wall 32 decreases as the area of ​​the hollow groove increases. Optionally, after the first hollow groove 3211 is divided into multiple hollow grooves, the multiple hollow grooves can be arranged around the second hollow groove 3231.

[0079] The following will describe several connection methods for the extension wall 322.

[0080] In the first example, such as Figure 14As shown, the end wall portion 32 is provided with four extending walls 322 and one connecting wall 323. The four extending walls 322 are evenly distributed along the circumference of the second surface 12, and the connecting wall 322 is located at the center of the second surface 12. All four extending walls 322 extend towards the center of the second surface 12 and connect to the connecting wall 323 at the center. Adjacent extending walls 322 and connecting walls 323 divide the first hollow groove 3211 into four hollow grooves of the same shape. The four hollow grooves are symmetrically arranged about the center of the second surface 12, and the hollow grooves formed by dividing the first hollow groove 3211 are set in the shape of fan-shaped grooves.

[0081] In the second example, such as Figure 15 As shown, the extension wall 322 is arranged in a similar manner to the first example, except that the first hollow groove 3211 is divided into an arc-shaped groove, and a circular second hollow groove 3231 is provided in the connecting wall 323. The multiple hollow grooves formed by dividing the first hollow groove 3211 are arranged at equal intervals around the second hollow groove 3231.

[0082] In the third example, such as Figure 18 As shown, the end wall portion 32 is provided with a plurality of (8) extension walls 322 at equal intervals along the circumference of the second surface 12. The plurality of extension walls 322 extend toward the center of the second surface 12 at the same time and connect to the connecting wall 323 at the center. Two adjacent extension walls 322 and the connecting wall 323 divide the first hollow groove 3211 into a plurality of circular hollow grooves. The connecting wall 323 is provided with a circular second hollow groove 3231. The plurality of circular hollow grooves are arranged at equal intervals around the second hollow groove 3231.

[0083] The above three examples are for illustrative purposes only and do not limit the specific arrangement of the extension wall 322. That is, in other examples, the first hollowed-out groove 3211 can also be divided into, but is not limited to, an arc-shaped groove (such as...). Figure 17 As shown), sector groove (such as Figure 16 As shown), circular groove (as shown) Figure 18 The cutouts (as shown) include triangular and elliptical grooves. Multiple cutouts can have the same or different shapes. The second cutout groove 3231 is not limited to a circular groove; the first cutout groove 3211 and the second cutout groove 3231 can also be set as other irregularly shaped grooves. Along the circumference of the second surface 12, the distance between any two adjacent extension walls 322 can be unequal.

[0084] In some embodiments, please refer to Figure 19A short-circuit prevention distance d is provided between the end of the sidewall portion 31 facing the first surface 11 and the first surface 11 along the first direction z of the porous body 10. That is, along the first direction z of the porous body 10, there is a certain distance between the end of the sidewall portion 31 and the first surface 11, and the first surface 11 is higher than the end of the sidewall portion 31. With this arrangement, a certain axial gap can be formed between the first surface 11 and the sidewall portion 31. In this way, when the heating element 20 is assembled on the first surface 11, the heating element 20 can be prevented from contacting the heat spreader 30, thereby avoiding the risk of short circuit between the two.

[0085] In some embodiments, please refer to Figure 24 and Figure 25 The heating assembly 100 also includes a pot body 40, in which a receiving cavity 41 is formed. The pot body 40 is fitted around the outer periphery of the heat spreader 30 so that the second surface 12 communicates with the receiving cavity 41. The receiving cavity 41 formed by the pot body 40 can be used to contain and store the atomizing medium. The atomizing medium stored in the receiving cavity 41 can contact the second surface 12 of the porous body 10 and penetrate into the porous body 10. After heating, the atomizing medium can form an aerosol and be released from the first surface 11 of the porous body 10.

[0086] For example, the pot body 40 is made of a rigid material, including but not limited to rigid non-metallic materials such as ceramics, glass, and plastics, or rigid metallic materials such as aluminum and stainless steel. The heat spreader 30, the porous body 10, and the heating element 20 constitute the heating core. The pot body 40 and the heating core are interference-fitted to ensure a tight seal between them. Specifically, the pot body 40 is connected to the heat spreader 30 of the heating core. Since both the pot body 40 and the heat spreader 30 are made of rigid materials, they possess a certain degree of rigidity. The porous body 10, however, is typically brittle. Therefore, the interference fit between the heat spreader 30 and the pot body 40 utilizes the rigidity of the heat spreader 30 to protect the brittle porous body 10, preventing the compressive force of the pot body 40 from directly acting on the porous body 10. This effectively prevents the porous body 10 from cracking, improving the manufacturing yield and reliability of the heating assembly 100.

[0087] Furthermore, in some embodiments, the outer edge of the first surface 11 is provided with a groove 111, and the sidewall portion 31 protrudes from the bottom wall of the groove 111 along the first direction of the porous body 10. Specifically, please refer to Figure 4 and Figure 19The distance h from the sidewall portion 31 protruding from the bottom wall of the groove 111 along the first direction z of the porous body 10 is defined as the groove 111. By providing the groove 111, a certain radial distance can be formed between the outer edge of the first surface 11 and the sidewall portion 31. When the heating assembly 100 and the pot body 40 are assembled together, the pot body 40 exerts a certain compressive force on the sidewall portion 31. However, by providing the groove 111, the compressive force of the pot body 40 can be prevented from being transmitted to the porous body 10, further increasing the protection of the porous body 10 and preventing it from cracking or being damaged. In some specific embodiments, the pot body 40 can be made of a material with a higher thermal conductivity than the heat spreader 30. For example, the thermal conductivity of the pot body 40 can be 120–210 W / (m·K), such as 120 W / (m·K), 150 W / (m·K), 180 W / (m·K), 200 W / (m·K), 210 W / (m·K), etc. Specifically, the pot body can be made of aluminum or aluminum alloy. By making the heat conduction rate of the pot body 40 much greater than that of the heat spreader 30, the heat transferred from the heat spreader 30 can be transferred to the atomizing medium through the inner wall of the accommodating cavity 41.

[0088] In some embodiments, please refer to Figure 4 The second surface 12 is provided with a mounting step 123, and the end wall portion 32 is disposed in the mounting step 123 so that the end wall portion 32 is flush with the second surface 12. The mounting step 123 further increases the contact area between the end wall portion 32 and the porous body 10, improving the connection strength between the heat exchanger 30 and the porous body 10, allowing the heat exchanger 30 to be more stably mounted on the porous body 10 and preventing the heat exchanger 30 from detaching from the porous body 10. By making the end wall portion 32 flush with the second surface 12, the overall outer contour of the heating assembly 100 is smoother, and the structure of the heating assembly 100 is more compact.

[0089] In some embodiments, the arrangement of the mounting step 123 is the same as in the previous embodiment, except that the second surface 12 protrudes from the end wall portion 32. During the sintering process of the porous body 10, due to the large molding shrinkage rate of the porous body 10, the bonding strength between the porous body 10 and the heat exchanger 30 is easily reduced, resulting in the porous body 10 and the heat exchanger 30 easily separating. Therefore, by having the second surface 12 protrude from the end wall portion 32, it is possible to improve the connection strength between the heat exchanger 30 and the porous body 10 and prevent the heat exchanger 30 from separating from the porous body 10. The heating element 20 will be described below.

[0090] Optionally, the heating element 20 is a heating film or an etched metal sheet. The heating element 20 can be integrally formed with the porous body 10 by sintering, or the heating element 20, porous body 10, and heat spreader 30 can be integrally formed. In other examples, only the porous body 10 and the heat spreader 30 can be integrally formed.

[0091] In some embodiments, the heating element 20 includes an electrode portion 21 and a heating portion 22. The electrode portion 21 is disposed at both ends of the heating portion 22, and the heating portion 22 is bent on the first surface 11. The electrode portion 21 of the heating element 20 is used to make an electrical connection with an external circuit, so that the heating portion 22 is heated by power supply from the external circuit. By bending the heating portion 22 on the first surface 11, a longer heating portion 22 can be disposed in the limited area of ​​the first surface 11, thereby improving the heating efficiency.

[0092] Alternatively, the heating element 22 can be arranged in the following ways.

[0093] In the first example, please refer to Figure 20 The heating element 22 extends along the second direction x on the first surface 11 in a curved manner, and its extension length along the third direction y gradually decreases from the center of the first surface 11 to the outer periphery, wherein the third direction y is perpendicular to the second direction x. That is, the heating element 22 is arranged in a serpentine manner, bending back and forth along the second direction x. This arrangement can make full use of the area of ​​the first surface 11, allowing for a longer heating element 22 in a limited space. On the other hand, it also ensures that the reciprocating distance of the heating element 22 gradually decreases from the center to the outer periphery, ensuring that there is a sufficient first protective gap between the heating element 22 and the edge of the first surface 11.

[0094] In the second example, please refer to Figure 21 The bending method of the heating element 20 is the same as in the first example, except that the bending region of the heating part 22 is bent and embedded into the porous body 10. On the one hand, the heating part 22 not only plays a heating role, but also acts as a pin 23 to make the heating element 20 and the porous body 10 more firmly connected. With this arrangement, the structure of the bent part of the heating part 22 can be reused as a pin 23, so the heating element 20 does not need to be provided with additional pins 23, thus simplifying the structure of the heating element 20. On the other hand, by bending the bending region of the heating element 20 and embedding it into the porous body 10, the heating element 20 can directly heat the outer peripheral area of ​​the porous body 10, thereby making the temperature of the central area and the outer peripheral area of ​​the second surface 12 of the porous body 10 more uniform, solving the problem of uneven temperature field distribution on the second surface 12 of the porous body 10, and allowing the atomizing medium to be consumed at a uniform rate, preventing the atomizing medium residue on the outer peripheral area of ​​the second surface 12.

[0095] In some specific examples, the heating power of the portion of the curved region embedded in the porous body 10 can account for 10% to 30% of the total heating power of the heating part 22, such as 10%, 15%, 20%, 25%, 30%, etc., so that the edge region of the heating body 20 has sufficient temperature to be transferred to the edge region of the second surface 12 of the porous body, thereby improving the uniformity of the temperature field of the second surface 12.

[0096] In the third example, please refer to Figure 22 The heating element 22 is arranged in a spiral and curved configuration on the first surface 11. In this way, the shape of the spiral structure of the heating element 22 is the same as the circular shape of the first surface 11 of the porous body 10, which helps to make the heating element 22 more fully distributed on the first surface 11 of the porous body 10, so that the area of ​​the first surface 11 of the porous body 10 is more fully utilized.

[0097] In the fourth example, please refer to Figure 23 The heating element 22 includes a first heating segment 24 and a second heating segment 25. Two second heating segments 25 are provided, with each end of the first heating segment 24 connected in series with one of the two second heating segments 25. The first heating segment 24 includes a straight segment, with the center of the first surface 11 located within the straight segment. The second heating segment 25 includes an arc segment, connected in series with both ends of the straight segment, and extending circumferentially along the first surface 11. This arrangement allows for better coverage of the circular first surface 11 using the straight and arc segments, while ensuring appropriate spacing between the straight and arc segments to prevent short circuits.

[0098] Optionally, the projection of the first heating segment 24 onto the second surface 12 can be located in the second region 122, and the projection of the second heating segment 25 can be located in the first region 121. Furthermore, the first heating segment 24 can be set with different heating powers (e.g., using heating wires with different cross-sectional areas) to control the heat generation in different regions of the first surface 11.

[0099] It is understandable that, regardless of the arrangement of the heating element 22 described above, the heating element 20 may also be provided with a number of pins 23. The pins 23 are spaced apart along the outer periphery of the heating element 22. The pins 23 can be bent and embedded into the porous body 10, so that the heating element 20 and the porous body 10 can be tightly connected, preventing the heating element 20 from detaching from the porous body 10. Optionally, the heating element 20 and the porous body 10 can be integrally sintered, with the pins 23 embedded in the porous body 10 and fixed by sintering, thereby achieving the connection and fixation of the heating element 20 and the porous body 10.

[0100] In some embodiments, the heating element 22 is provided with a plurality of cuts 221, which are spaced apart along the extending direction of the heating element 22. In this way, two parallel heating lines can be formed on both sides of the cut 221, and the positions before and after the cut 221 form the connection points 222 of these two heating lines. On the one hand, the connection points 222 can increase the strength of the heating element 22 and prevent the heating element 22 from deforming; on the other hand, the connection points 222 can divide a relatively wide heating element 22 into multiple heating lines, avoiding the formation of local high-temperature hot spots inside the heating element 22, thereby making the temperature more uniform when the heating element 20 heats up.

[0101] Secondly, this application also provides an electronic atomizing device (not shown), including a main body and a heating component 100 provided in the first aspect. The heating component 100 is disposed within the main body, which includes an air inlet, an air outlet, and an airflow channel connecting the air inlet and the air outlet. The first surface 11 of the porous body 10 is connected to the airflow channel. The heating component 100 absorbs the atomizing medium through the second surface 12 of the porous body 10 and is heated by the heating element 20 to form an aerosol. After the aerosol is released from the first surface 11, it can enter the airflow channel. The aerosol mixes with the air entering through the air inlet and is discharged through the air outlet for the user to inhale.

[0102] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0103] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

[0104] In the description of this application, the presence of a comma ("、") in the patent title indicates an "and" relationship, not an "or" relationship. For example, if the patent title is "A and B", it means that the content claimed in this application is: a technical solution with the subject matter title A and a technical solution with the subject matter title B.

Claims

1. A heating assembly, characterized by: The application relates to a heating body and a heating device. The heating body comprises a porous body, a heating body and a uniform heating body. The porous body has a first surface and a second surface oppositely arranged along a first direction, and the second surface has a first area and a second area, and the first area is arranged around the periphery of the second area. The heating body is arranged on the first surface. The uniform heating body comprises a side wall part and an end wall part, the side wall part is arranged on the peripheral side of the porous body, the end wall part extends from the side wall part to the second surface, the end wall part at least partially overlaps the projection of the first area along the first direction of the porous body, the heating body at least partially overlaps the projection of the second area along the first direction of the porous body, and the side wall part is further provided with a limiting structure connected with the porous body.

2. The heating assembly of claim 1, wherein: The limiting structure comprises a first clamping part arranged on the inner side of the side wall part, and the peripheral side of the porous body is provided with a second clamping part corresponding to the first clamping part.

3. The heating assembly of claim 2, wherein: The first clamping part is a clamping protrusion, the second clamping part is a clamping groove, the limiting structure comprises a plurality of clamping protrusions, and the plurality of clamping protrusions are arranged at intervals along the periphery of the porous body. The first clamping part is a clamping protrusion, and the clamping protrusion is continuously arranged along the periphery of the porous body.

4. The heating assembly of claim 1, wherein: The limiting structure comprises a clamping claw arranged at one end of the side wall part away from the end wall part, the clamping claw is bent towards the center of the porous body, the clamping claw is embedded into the porous body, or the clamping claw abuts against the edge of the first surface.

5. The heating assembly of claim 1, wherein: The limiting structure comprises a ring-shaped limiting wall bent towards the first surface, the ring-shaped limiting wall is arranged around the periphery of the first surface, the ring-shaped limiting wall is embedded into the porous body, or the ring-shaped limiting wall abuts against the edge of the first surface.

6. The heating assembly of any one of claims 1 to 5, wherein: The end wall part comprises a ring-shaped wall, the ring-shaped wall is arranged around the periphery of the second surface, and a first hollow groove is formed in the second surface.

7. The heating assembly of claim 6, wherein: The end wall part further comprises an extension wall, the extension wall extends from the inner edge of the ring-shaped wall into the first hollow groove.

8. The heating assembly of claim 7, wherein: The end wall part comprises a plurality of extension walls, and the plurality of extension walls are arranged at intervals along the circumferential direction of the ring-shaped wall.

9. The heating assembly of claim 8, wherein: The end wall part further comprises a connecting wall, the connecting wall is arranged in the first hollow groove, and one end of the plurality of extension walls away from the ring-shaped wall is connected to the connecting wall.

10. The heating assembly of claim 9, wherein: The connecting wall is provided with a second hollow groove, and the second hollow groove is not communicated with the first hollow groove.

11. The heating assembly of claim 1, wherein: The second surface is provided with a mounting step, the end wall part is arranged in the mounting step, so that the end wall part is flush with the second surface, or the second surface protrudes from the end wall part.

12. The heating assembly of any one of claims 1 to 5, wherein: One end of the side wall part towards the first surface is provided with an anti-short-circuit distance along the first direction of the porous body.

13. The heating assembly of any one of claims 1 to 5, wherein: The outer edge of the first surface is provided with a cutting groove, and the side wall part protrudes from the bottom wall of the cutting groove along the first direction of the porous body.

14. The heating assembly of any one of claims 1 to 5, wherein: The heating assembly further comprises a pot body, a receiving cavity is formed in the pot body, and the pot body is sleeved on the outer periphery of the heat evenly body so that the second surface is communicated with the receiving cavity.

15. An electronic atomizing device, characterized by: The heating assembly as claimed in any one of claims 1 to 14 is arranged in a main body, the main body comprises an air inlet, an air outlet and an air flow channel communicated between the air inlet and the air outlet, and the first surface of the porous body is communicated with the air flow channel.

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