Heating assembly and electronic atomization device

Abstract

The utility model 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 heat conductivity coefficient of the soaking body is larger than that of the porous body, 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, and the projection of the end wall part and the projection of the first area in the first direction of the porous body are at least partially overlapped; the projections of the heating body and the second area in the first direction of the porous body are at least partially overlapped. According to the scheme, the surface temperature field of the porous body can be distributed more uniformly, and the problem of burnt smell caused by local high temperature or atomization medium residue caused by insufficient temperature is solved.

Description

Technical Field

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

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

[0003] Due to the influence of factors such as the material, thermal conductivity, heating element, and arrangement structure of the porous body, there is a problem of uneven temperature field distribution on the contact surface between the porous body and the atomizing medium. Compared with the liquid atomizing medium with higher fluidity, the semi-solid or solid (such as paste) atomizing medium with poor fluidity has a higher viscosity and is therefore difficult to flow freely on the surface of the porous body or in the porous body. Due to the poor fluidity of the atomizing medium, the consumption rate of the atomizing medium at various parts of the porous body surface is further inconsistent. For example, in areas where the porous body temperature is higher, the atomizing medium is consumed quickly, which is prone to the risk of overheating and causing a burnt smell. In areas where the porous body temperature is lower, the atomizing medium is consumed slowly, which is prone to problems such as residual atomizing medium or insufficient atomization. Utility Model Content

[0004] In order to solve at least one of the above technical problems, the present application provides a heating component and an electronic atomization device, which can make the temperature field distribution on the surface of the porous body more uniform. The technical solution adopted is as follows.

[0005] In the first aspect, the heating component provided in the present application includes a porous body, a heating body and a heat-distributing body, the porous body having a first surface and a second surface arranged opposite to each other along a first direction, the second surface having a first area and a second area, the first area being arranged around the periphery of the second area; the heating body is arranged on the first surface; the thermal conductivity of the heat-distributing body is greater than the thermal conductivity of the porous body, the heat-distributing body includes a side wall portion and an end wall portion, the side wall portion is arranged on the outer peripheral side of the porous body, the end wall portion extends from the side wall portion to the second surface, the end wall portion and the first area are at least partially overlapped in projection along the first direction of the porous body, and the heating body and the second area are at least partially overlapped in projection along the first direction of the porous body.

[0006] In certain embodiments of the present application, the end wall portion includes an annular wall, which is arranged around the outer circumference of the second surface and has a first hollow groove formed on the second surface, and the first hollow groove is arranged corresponding to the second area.

[0007] In certain embodiments of the present application, the end wall portion further includes an extension wall, and the extension wall extends from the inner edge of the annular wall into the first hollow groove.

[0008] In certain embodiments of the present application, the end wall portion includes a plurality of the extension walls, and the plurality of the extension walls are arranged at intervals along the circumference of the annular wall.

[0009] In certain embodiments of the present application, the end wall portion further includes a connecting arm, the connecting wall is disposed in the first hollow groove, and ends of the plurality of extension walls away from the annular wall are all connected to the connecting wall.

[0010] In certain embodiments of the present application, a second hollow groove is provided in the connecting wall, and the second hollow groove is not connected to the first hollow groove.

[0011] In certain embodiments of the present application, the second surface is provided with an installation step, and the end wall portion is arranged in the installation step so that the end wall portion is flush with the second surface, or the second surface protrudes from the end wall portion.

[0012] In certain embodiments of the present application, at least a portion of the end wall portion is embedded in the porous body.

[0013] In certain embodiments of the present application, an anti-short-circuit distance along the first direction of the porous body is provided between the end of the side wall portion facing the first surface and the first surface.

[0014] In certain embodiments of the present application, a groove is provided at the outer edge of the first surface, and the side wall portion protrudes from the bottom wall of the groove along the first direction of the porous body.

[0015] In certain embodiments of the present application, the heating assembly further includes a pot body having a receiving cavity formed therein, and the pot body is sleeved on the outer periphery of the heat equalizer so that the second surface is connected to the receiving cavity.

[0016] In the second aspect, the present application also provides an electronic atomization device, comprising a main body and a heating component provided in the first aspect, wherein the heating component is arranged in the main body, the main body comprises an air inlet, an air outlet and an air flow channel connecting the air inlet and the air outlet, and the first surface of the porous body is connected to the air flow channel.

[0017] The embodiments of the present application have at least the following beneficial effects: by providing a heat-distributing body and utilizing the characteristic of the heat-distributing body having a high thermal conductivity, the side wall portion of the heat-distributing body can be used to transfer the heat of the first surface of the porous body to the second surface along the outer peripheral side of the porous body, and the end wall portion of the heat-distributing body can be used to quickly transfer the heat to the first area of the second surface, thereby increasing the speed at which heat is transferred from the heating element to the first area, making the temperature field distribution between the first area and the second area of the second surface more uniform, so that the atomized medium on the second surface can be consumed at a uniform rate, preventing the second area of the second surface from having a burnt smell due to local high temperature, or the problem of residual atomized medium due to insufficient temperature in the first area, thereby improving the heating effect of the heating component and the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The aspects and advantages described and / or attached in the embodiments of the present application will become apparent and easily understood in conjunction with the following drawings. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0019] Figure 1 A schematic structural diagram of a first example of a heating assembly provided in an embodiment of the present application from a first viewing angle;

[0020] Figure 2 A schematic structural diagram of the first example of the heating assembly provided in an embodiment of the present application from a second viewing angle;

[0021] Figure 3 An exploded view of a heating assembly provided in an embodiment of the present application;

[0022] Figure 4 for Figure 1 AA cross-section of

[0023] Figure 5 A schematic structural diagram of a first example of an end wall portion of a heating assembly provided in an embodiment of the present application;

[0024] Figure 6 A schematic structural diagram of a second example of the end wall portion of the heating assembly provided in an embodiment of the present application;

[0025] Figure 7 A schematic structural diagram of a third example of the end wall portion of the heating assembly provided in an embodiment of the present application;

[0026] Figure 8 A schematic structural diagram of a fourth example of the end wall portion of the heating assembly provided in an embodiment of the present application;

[0027] Figure 9 A schematic structural diagram of a fifth example of the end wall portion of the heating assembly provided in an embodiment of the present application;

[0028] Figure 10 for Figure 4 A partial enlarged view of point B;

[0029] Figure 11 A schematic structural diagram of a second example of a heating assembly provided in an embodiment of the present application;

[0030] Figure 12 for Figure 11 CC cross-section diagram;

[0031] Figure 13 A schematic structural diagram of a third example of a heating assembly provided in an embodiment of the present application;

[0032] Figure 14 for Figure 13 DD profile;

[0033] Figure 15 A schematic structural diagram of a first example of a heating element of a heating assembly provided in an embodiment of the present application;

[0034] Figure 16 A schematic structural diagram of a second example of a heating element of a heating assembly provided in an embodiment of the present application;

[0035] Figure 17 A schematic structural diagram of a third example of a heating element of a heating assembly provided in an embodiment of the present application;

[0036] Figure 18 A schematic structural diagram of a fourth example of a heating element of a heating assembly provided in an embodiment of the present application;

[0037] Figure 19 A schematic structural diagram of a fourth example of a heating assembly provided in an embodiment of the present application;

[0038] Figure 20 for Figure 19 EE cross-section diagram.

[0039] Reference numerals:

[0040] 100. Heating component;

[0041] 10. Porous body; 11. First surface; 111. Groove; 12. Second surface; 121. First region; 122. Second region; 123. Mounting step;

[0042] 20. Heating element; 21. Electrode portion; 22. Heating portion; 221. Cutout; 222. Connection point; 23. Pin; 24. First heating section; 25. Second heating section;

[0043] 30. Heat dissipating body; 31. Side wall; 32. End wall; 321. Annular wall; 3211. First hollow groove; 322. Extension wall; 323. Connecting wall; 3231. Second hollow groove;

[0044] 40. Pot body; 41. Accommodation cavity. DETAILED DESCRIPTION

[0045] The following combination Figures 1 to 20 Embodiments of the present application are described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and are not to be construed as limiting the present application.

[0046] In the description of this application, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which 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, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, unless otherwise specified, "multiple" means two or more.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0048] First, see Figures 1 to 4The present application provides a heating component 100, comprising a porous body 10, a heating element 20 and a heat-distributing element 30. The porous body 10 has a first surface 11 and a second surface 12 arranged opposite to each other along a first direction, the second surface 12 has a first area 121 and a second area 122, and the first area 121 is arranged around the periphery of the second area 122. The heating element 20 is arranged on the first surface 11, the thermal conductivity of the heat-distributing element 30 is greater than the thermal conductivity of the porous body 10, the heat-distributing element 30 includes a side wall portion 31 and an end wall portion 32, the side wall portion 31 is arranged on the outer peripheral side of the porous body 10, the end wall portion 32 extends from the side wall portion 31 to the second surface 12, the projections of the end wall portion 32 and the first area 121 along the first direction of the porous body 10 at least partially overlap, and the projections of the heating element 20 and the second area 122 along the first direction of the porous body 10 at least partially overlap. When the heating element 20 is heated, its heat can be dissipated along the first direction of the porous body 10 (such as Figure 4 The thermal conductivity of the porous body 10 is low, and therefore the first region 121 located outside the second region 122 is heated relatively slowly. The present application sets a heat-distributing body 30 and utilizes the characteristic of the heat-distributing body 30 having a high thermal conductivity coefficient. The side wall portion 31 of the heat-distributing body 30 can transfer the heat of the first surface 11 of the porous body 10 along the outer peripheral side of the porous body 10 to the second surface 12, and the end wall portion 32 of the heat-distributing body 30 can quickly transfer the heat to the first area 121 of the second surface 12, thereby increasing the speed of heat transfer from the heating element 20 to the first area 121, making the temperature field distribution between the first area 121 and the second area 122 of the second surface 12 more uniform, so that the atomized medium on the second surface 12 can be consumed at a uniform rate, preventing the problem of burnt smell caused by local high temperature in the second area 122 (central area) of the second surface 12, or the problem of residual atomized medium caused by insufficient temperature in the first area 121 (peripheral area), thereby improving the heating effect of the heating component 100 and the user experience.

[0049] Optionally, the porous body 10 may be porous ceramics, porous glass, etc., or other synthetic or natural materials with a porous structure.

[0050] In some embodiments, the thermal conductivity of the heat-distributing body 30 is much greater than the thermal conductivity of the porous body 10. In this way, the rapid thermal conductivity of the heat-distributing body 30 can be utilized to quickly transfer the heat from the first surface 11 of the porous body 10 to the first area 121 of the second surface 12 of the porous body 10, thereby shortening the heating time difference between the first area 121 and the second area 122 on the second surface 12 of the porous body 10, so that the heating speeds of various parts of the second surface 12 tend to be consistent, achieving a more uniform temperature field distribution on the second surface 12.

[0051] In some specific examples, the thermal conductivity of the heat-spreading body 30 is 5 to 25 times that of the porous body 10 . For example, the thermal conductivity of the heat-spreading body 30 is 5, 10, 15, 20, 25 times that of the porous body 10 .

[0052] In some specific examples, the thermal conductivity of the porous body 10 is 0.8 to 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 made of other non-metallic hard materials.

[0053] Exemplarily, the porous body 10 can be configured as a cylindrical, block-shaped, prismatic, etc., that is, the cross-sectional shape of the porous body 10 can be circular, rectangular, polygonal, etc., or can be elliptical or other irregular shapes. Taking the 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, or, when the porous body 10 adopts a flat disc-shaped structure, the first direction refers to the thickness direction of the disc, or, when the porous body 10 adopts a block-shaped or special-shaped structure, the first direction refers to the thickness direction of the block structure. It can be understood that the second surface 12 is used to contact with the atomizing medium so that the atomizing medium penetrates into the interior of the porous body 10, and the first surface 11 is used to set 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 heated, thereby heating the atomizing medium and atomizing it to form an aerosol, wherein the heating element 20 can be partially or completely embedded in the first surface 11. Therefore, the first direction can also be understood as the direction in which the atomized medium moves in the pores of the porous body 10 .

[0054] For example, when the porous body 10 is cylindrical (e.g. Figures 1 to 4 As shown in the figure), when the structure is a disc or prismatic structure, 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 various parts of the first surface 11 to the second surface 12 along the first direction z is approximately the same.

[0055] Exemplarily, the first area 121 and the second area 122 of the second surface 12 are relative, and the second area 122 refers to the central area of the second surface 12. Usually, the heating element 20 is arranged in the central area of the first surface 11, and the projection of the heating element 20 on the second surface 12 is located in the second area 122. The first area 121 refers to the peripheral area close to the outer edge of the second surface 12, and the projection of the heating element 20 on the second surface 12 usually does not fall into the first area 121. Taking the porous body 10 as an example of being set to a cylindrical shape, the center of the second surface 12 is located in the second area 122, and the first area 121 is the area away from the center of the circle. Optionally, the second area 122 is usually able to directly contact the atomized medium, and the atomized medium penetrates into the pore structure of the second area 122 of the porous body 10 through osmosis. The first region 121 may be partially covered by the end wall portion 32 , in which case the atomized medium can penetrate into the porous body 10 from where the first region 121 is not covered, or the first region 121 may be completely covered by the end wall portion 32 , in which case the atomized medium does not penetrate into the porous body 10 from the first region 121 .

[0056] The following further describes the porous body 10 as being cylindrical.

[0057] Optionally, the projections of the end wall portion 32 and the first area 121 on the second surface 12 may completely overlap or partially overlap. When partially overlapping, the projection of the end wall portion 32 on the second surface 12 that does not overlap with the first area is located in the second area 122. Similarly, the projections of the heating element 20 and the second area 122 on the second surface 12 may completely overlap or partially overlap. When partially overlapping, the projection of the non-overlapping portion of the heating element 20 on the second surface 12 is located in the first area 121.

[0058] Optionally, by providing different structural forms of the end wall portion 32 of the heat equalizer 30, the uniformity of the temperature field of the second surface 12 can be further improved. The different configurations of the end wall portion 32 will be described in detail below.

[0059] In some embodiments, see Figure 5The end wall portion 32 includes an annular wall 321, which is arranged around the outer periphery of the second surface 12 and has a first hollow groove 3211 formed on the second surface 12. The first hollow groove 3211 is arranged corresponding to the second area 122. For example, the first hollow groove 3211 can be formed in the central area of the second surface 12. By providing the annular wall 321, the annular wall 321 can be continuously arranged around the outer periphery of the second surface 12. In this way, when heat is transferred to the annular wall 321 by the side wall portion 31, the annular wall 321 can uniformly heat the first area 121, thereby making the temperature field distribution of the second surface 12 more uniform. By forming the first hollow groove 3211, the atomized medium can penetrate into the porous body 10 through the first hollow groove 3211 and be further heated and atomized.

[0060] In some embodiments, see Figure 6 In addition to the annular wall 321 provided on the end wall portion 32, an extension wall 322 may also be provided on the end wall portion 32. The extension wall 322 extends from the inner edge of the annular wall 321 into the first hollow groove 3211. The extension wall 322 can further transfer heat 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 evenly distributed in the radial direction.

[0061] In some embodiments, the end wall portion 32 includes a plurality of extension walls 322, which are spaced apart along the circumference of the annular wall 321. By arranging a plurality of extension walls 322 along the circumference of the second surface 12, the temperature field of the second surface 12 can be more evenly distributed in the circumferential direction. Figure 6 For example, the end wall portion 32 is provided with four extension walls 322 , and the four extension walls 322 are distributed at equal intervals along the circumference of the second surface 12 .

[0062] In some embodiments, see Figure 7 The end wall portion 32 also includes a connecting wall 323, which is arranged in the first hollow groove 3211. The ends of the multiple extension walls 322 away from the annular wall 321 are all connected to the connecting wall 323. For example, any two extension walls 322 extend toward each other until they are connected to each other at the connecting wall 323. By providing the connecting wall 323, the multiple extension walls 322 can be connected to each other. On the one hand, the structural strength and stability of the end wall portion 32 on the second surface 12 can be improved, and the deformation caused by the extension wall 322 extending too long can be avoided. On the other hand, the coverage area of the end wall portion 32 on the second surface 12 can be increased, so that the temperature field distribution of the second surface 12 is more uniform. It can be understood that in this arrangement, the first hollow groove 3211 is divided into multiple hollow grooves by the connecting wall 323 and the two adjacent extension walls 322. The shape of the hollow groove can be an arc groove, a fan groove, a circular groove, a triangular groove or an elliptical groove, etc.

[0063] In some embodiments, see Figure 8 and Figure 9 , a second hollow groove 3231 is provided in the connecting wall 323, and the first hollow groove 3211 and the second hollow groove 3231 are not connected to each other. By providing the second hollow groove 3231, the penetration area of the atomized medium on the second surface 12 can be increased, ensuring that the atomized medium can smoothly penetrate into the porous body 10. By providing the second hollow groove 3231 and the first hollow groove 3211 not being connected to each other, the structural strength and stability of the end wall portion 32 can be improved, avoiding the problem that the strength of the end wall portion 32 decreases as the area of the hollow groove increases. Optionally, after the first hollow groove 3211 is divided into a plurality of hollow grooves, the plurality of hollow grooves can be arranged around the second hollow groove 3231.

[0064] Several connection methods of the extension wall 322 are listed below for description.

[0065] In the first example, if Figure 5 As shown, the end wall portion 32 is provided with four extension walls 322 and a connecting wall 323. The four extension walls 322 are evenly spaced along the circumference of the second surface 12. The connecting wall 322 is located at the center of the second surface 12. All four extension walls 322 extend toward the center of the second surface 12 and connect to the connecting wall 323 at the center. Two adjacent extension 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. The hollow grooves formed by dividing the first hollow groove 3211 are configured as fan-shaped grooves.

[0066] In the second example, Figure 6 As shown, the setting manner of the extension wall 322 is similar to the first example, the difference is that the first hollow groove 3211 is divided to form an arc groove shape, and a circular second hollow groove 3231 is provided in the connecting wall 323, and the first hollow groove 3211 is divided to form multiple hollow grooves that are equally spaced around the second hollow groove 3231.

[0067] In the third example, Figure 9 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, and the plurality of extension walls 322 simultaneously extend toward the center of the second surface 12 and are connected to the connecting wall 323 at the center. Two adjacent extension walls 322 and the connecting wall 323 separate the first hollow groove 3211 into a plurality of circular hollow grooves, and a circular second hollow groove 3231 is provided in the connecting wall 323, and a plurality of circular hollow grooves are arranged at equal intervals around the second hollow groove 3231.

[0068] The above three examples are only for illustration, and the above examples do not limit the specific configuration of the extension wall 322. That is, in other examples, the first hollow groove 3211 can also be divided into not limited to arc grooves (such as Figure 8 As shown), fan-shaped groove (as shown Figure 7 As shown), circular groove (as Figure 9 The plurality of hollow grooves may be of the same or different shapes. The second hollow groove 3231 is not limited to a circular groove. The first hollow groove 3211 and the second hollow groove 3231 may also be configured as other irregularly shaped grooves. Along the circumference of the second surface 12, the distance between any two adjacent extension walls 322 may be unequal.

[0069] The porous body 10 will be further described below.

[0070] In some embodiments, please refer to Figure 13 and Figure 14 The second surface 12 is provided with a mounting step 123, and the end wall portion 32 is disposed within the mounting step 123 so that the end wall portion 32 is flush with the second surface 12. Utilizing the mounting step 123, the contact area between the end wall portion 32 and the porous body 10 can be further increased, thereby improving the connection strength between the heat-leveling element 30 and the porous body 10. This allows the heat-leveling element 30 to be more stably mounted on the porous body 10, thereby preventing the heat-leveling element 30 from falling off the porous body 10. By arranging the end wall portion 32 to be flush with the second surface 12, the outer contour of the entire heating assembly 100 can be made smoother, and the structure of the heating assembly 100 can be made more compact.

[0071] 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 of the porous body 10, the bonding strength between the porous body 10 and the heat-scaling body 30 is easily reduced, thereby easily causing the porous body 10 to separate from the heat-scaling body 30. Therefore, having the second surface 12 protrude from the end wall portion 32 can help improve the connection strength between the heat-scaling body 30 and the porous body 10, preventing the heat-scaling body 30 from separating from the porous body 10.

[0072] In some embodiments, please refer to Figure 11 and Figure 12, at least a portion of the end wall portion 32 can also be embedded in the porous body 10. The solution of embedding the end wall portion 32 in the porous body 10 is adopted, that is, the end wall portion 32 is buried in the porous body 10, so that the heat-equalizing body 30 will not be able to separate from the porous body 10, thereby improving the bonding strength and connection reliability between the heat-equalizing body 30 and the porous body 10. It can be understood that when the end wall portion 32 is provided with an annular wall 321, the annular wall 321 may not be embedded in the porous body 10, that is, the annular wall 321 extends to the second surface 12, and the annular wall 321 can directly contact the atomizing medium. When the end wall portion 32 is provided with an extension wall 322 and a connecting wall 323, the extension wall 322 and the connecting wall 323 can be fully or partially embedded in the porous body.

[0073] In some embodiments, a 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 of the porous body 10. That is, along the first direction z of the porous body 10, a certain distance is left between the end of the sidewall portion 31 and the first surface 11, with the first surface 11 being higher than the end of the sidewall portion 31. This arrangement creates a certain axial spacing between the first surface 11 and the sidewall portion 31. Thus, when the heating element 20 is assembled on the first surface 11, contact between the heating element 20 and the heat-dissipating element 30 is avoided, thereby preventing the risk of a short circuit between the two.

[0074] In some embodiments, see Figure 19 and Figure 20 The heating assembly 100 further includes a pot body 40, which has a receiving cavity 41 formed therein. The pot body 40 is sleeved around the outer periphery of the heat-dissipating body 30, such that the second surface 12 is in communication with the receiving cavity 41. That is, the inner circumferential wall of the pot body 40 and the second surface 12 jointly define a storage space for the atomized medium. The receiving cavity 41 formed by the pot body 40 can be used to store the atomized medium. The atomized 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 atomized medium can form an aerosol and be released from the first surface 11 of the porous body 10.

[0075] In some specific examples, the pot body 40 is a hollow cavity with openings at both ends, and the outer peripheral wall of the heat equalizer 30 is interference fit with the inner peripheral wall of one end of the pot body 40. In this way, there is no need to rely on other fixed structural parts to simplify the overall structure. At the same time, with the help of the protective effect of the heat equalizer 30 on the porous body 10, the problem of direct squeezing of the porous body 10 by the pot body and causing rupture is avoided.

[0076] In some specific embodiments, the pot body 40 can be made of a material having a higher thermal conductivity than the heat-scaling body 30. For example, the thermal conductivity of the pot body 40 can be between 120 and 210 W / (m·K), such as 120 W / (m·K), 150 W / (m·K), 180 W / (m·K), 200 W / (m·K), or 210 W / (m·K). Specifically, the pot body can be made of aluminum or an aluminum alloy. By making the thermal conductivity of the pot body 40 much higher than that of the heat-scaling body 30, heat transferred from the heat-scaling body 30 can be transferred to the atomizing medium through the inner wall of the accommodating cavity 41.

[0077] Exemplarily, the pot body 40 is made of a hard material, including but not limited to hard non-metallic materials such as ceramics, glass, and plastic, or hard metal materials such as aluminum and stainless steel. The heat-dissipating body 30, the porous body 10, and the heating element 20 constitute a heating core, and the pot body 40 is interference-connected with the heating core to ensure the sealing of the connection between the heating core and the pot body 40. Specifically, the pot body 40 is connected to the heat-dissipating body 30 of the heating core. Since the pot body 40 and the heat-dissipating body 30 are both made of hard materials, both have a certain rigidity, and the porous body 10 usually has a certain brittleness, the heat-dissipating body 30 is interference-connected with the pot body 40, and the rigidity of the heat-dissipating body 30 can be used to protect the brittle porous body 10, thereby preventing the extrusion force of the pot body 40 from directly acting on the porous body 10, thereby effectively preventing the porous body 10 from brittle cracking, and improving the manufacturing yield and use reliability of the heating component 100.

[0078] Furthermore, in some embodiments, a groove 111 is provided on the outer edge of the first surface 11, and the side wall portion 31 protrudes from the bottom wall of the groove 111 along the first direction of the porous body 10. For details, please refer to Figure 4 and Figure 10 The distance h between the side wall portion 31 and the bottom wall of the groove 111 along the first direction z of the porous body 10 is provided. The provision of the groove 111 creates a certain radial spacing between the outer edge of the first surface 11 and the side wall portion 31. When the heating assembly 100 and the pot body 40 are assembled, the pot body 40 exerts a certain amount of squeezing force on the side wall portion 31. However, the provision of the groove 111 prevents the squeezing force of the pot body 40 from being transmitted to the porous body 10, further enhancing the protection of the porous body 10 and preventing it from being cracked or damaged.

[0079] The heating element 20 will be described below.

[0080] Optionally, the heating element 20 is a heating film layer or an etched metal sheet. The heating element 20 can be formed by integrally sintering with the porous body 10. Of course, the heating element 20, the porous body 10, and the heat-scaling body 30 can also be integrally formed. In other embodiments, only the porous body 10 and the heat-scaling body 30 can be integrally formed.

[0081] In some embodiments, the heating element 20 includes an electrode portion 21 and a heating portion 22. The electrode portions 21 are disposed at both ends of the heating portion 22. The heating portion 22 is bent on the first surface 11. The electrode portion 21 of the heating element 20 is used to electrically connect to an external circuit, and the external circuit supplies power to achieve the effect of electrically heating the heating portion 22. By bending the heating portion 22 on the first surface 11, a longer heating portion 22 can be provided within the limited area of the first surface 11, thereby improving heating efficiency.

[0082] Optionally, the heating portion 22 may be arranged in the following manners.

[0083] In the first example, see Figure 15 , the heating portion 22 is bent and extended along the second direction x on the first surface 11, and the extension length along the third direction y gradually decreases from the center of the first surface 11 to the periphery, wherein the third direction y is perpendicular to the second direction x. That is, the heating portion 22 is arranged to bend back and forth along the second direction x in a serpentine manner. With this arrangement, on the one hand, the area of the first surface 11 can be fully utilized, and a longer heating portion 22 can be arranged in a limited space. On the other hand, the reciprocating distance of the heating portion 22 can be gradually reduced from the center to the periphery, ensuring that there is a sufficient first protective distance between the heating portion 22 and the edge of the first surface 11.

[0084] In the second example, see Figure 16 , the bending manner of the heating element 20 is the same as that of the first example, the difference being that the bending area of the heating portion 22 is bent and embedded in the porous body 10. On the one hand, the heating portion 22 can not only play a role in heating, but also play the role of a pin 23 to make the heating element 20 more firmly connected to the porous body 10. With this arrangement, the structure of the heating portion 22 of the bent portion can be reused as a pin 23. At this time, the heating element 20 does not need to be additionally provided with a pin 23, thereby simplifying the structure of the heating element 20. On the other hand, by bending the bending area and embedding it into the porous body 10, the heating element 20 helps the heating element 20 to directly heat the peripheral area of the porous body 10, thereby making the temperature of the central area and the 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 enabling the atomized medium to be consumed at a uniform rate, thereby preventing the atomized medium from remaining in the peripheral area of the second surface 12.

[0085] In some specific examples, the heating power of the portion of the curved area embedded in the porous body 10 may account for 10% to 30% of the total heating power of the heating portion 22, for example, 10%, 15%, 20%, 25%, 30%, etc., so that the edge area of the heating body 20 has sufficient temperature to be transferred to the edge area of the second surface 12 of the porous body, thereby improving the uniformity of the temperature field of the second surface 12.

[0086] In the third example, see Figure 17 The heating portion 22 is arranged in a spiral and curved manner on the first surface 11. In this way, the shape of the spiral structure of the heating portion 22 is the same as the circular shape of the first surface 11 of the porous body 10, which helps to make the heating portion 22 more fully arranged 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.

[0087] In the fourth example, see Figure 18 The heating portion 22 includes a first heating section 24 and a second heating section 25. Two second heating sections 25 are provided, and the two ends of the first heating section 24 are connected in series with the two second heating sections 25. The first heating section 24 includes a straight line segment, and the center of the first surface 11 is located in the straight line segment. The second heating section 25 includes an arc segment, and the arc segment is connected in series with the two ends of the straight line segment. The arc segment extends along the circumference of the first surface 11. In this way, the straight line segments and the arc segment can be used to better cover the circular first surface 11, and the appropriate spacing between the straight line segments and the arc segment can be ensured to avoid short circuits.

[0088] Optionally, the projection of the first heating segment 24 on the second surface 12 can be located in the second area 122, and the projection of the second heating segment 25 can be located in the first area 121. Furthermore, the first heating segment 24 can be set with different heating powers (for example, using heating wires with different cross-sectional areas) to control the heat generation of different areas of the first surface 11.

[0089] It is understandable that, regardless of which of the above-mentioned arrangements of the heating portion 22 is adopted, the heating element 20 may further be provided with a plurality of pins 23, which are arranged at intervals along the periphery of the heating portion 22. The pins 23 can be bent and embedded in the porous body 10, so that the heating element 20 and the porous body 10 can be tightly combined to prevent the heating element 20 from being separated from the porous body 10. Alternatively, the heating element 20 and the porous body 10 may be sintered as a whole, and the pins 23 are embedded in the porous body 10 and fixed by sintering to achieve connection and fixation between the heating element 20 and the porous body 10.

[0090] In some embodiments, the heating portion 22 is provided with a plurality of cutouts 221, which are spaced apart along the extension direction of the heating portion 22. Thus, two parallel heating circuits can be formed on either side of the cutouts 221, and the positions before and after the cutouts 221 form connection points 222 of the two heating circuits. On the one hand, the connection points 222 can increase the strength of the heating portion 22 and prevent deformation of the heating portion 22. On the other hand, the connection points 222 can divide the entire wide heating portion 22 into multiple heating lines, avoiding the formation of localized high-temperature hot spots within the heating portion 22, thereby ensuring a more uniform temperature when the heating element 20 is heated.

[0091] In a second aspect, the present application further provides an electronic atomization device (not shown), comprising a main body and the heating assembly 100 provided in the first aspect. The heating assembly 100 is disposed within the main body. The main body includes an air inlet, an air outlet, and an air flow channel connecting the air inlet and the air outlet. The first surface 11 of the porous body 10 is connected to the air flow channel. The heating assembly 100 absorbs the atomizing medium through the second surface 12 of the porous body 10 and heats it through the heating element 20 to form an aerosol. After the aerosol is released from the first surface 11, it can enter the air flow channel. The aerosol is mixed with the air entering the air inlet and discharged through the air outlet for inhalation by the user.

[0092] In the description of this specification, if the reference terms "one embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" appear, it means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0093] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present application.

[0094] In the description of this application, if the "," appears in the patent title, it indicates an "and" relationship, not an "or" relationship. For example, if the patent title is "A, B", it means that the content protected by this application is: the technical solution of the subject name A and the technical solution of the subject name B.

Claims

1. A heating assembly, characterized in that: include A porous body having a first surface and a second surface disposed opposite to each other along a first direction, wherein the second surface has a first region and a second region, and the first region is arranged around a periphery of the second region; a heating element, disposed on the first surface; as well as A heat-distributing body, wherein the thermal conductivity of the heat-distributing body is greater than that of the porous body, the heat-distributing body comprises a side wall portion and an end wall portion, the side wall portion is arranged on the outer peripheral side of the porous body, the end wall portion extends from the side wall portion to the second surface, the end wall portion at least partially overlaps with the projection of the first area along the first direction of the porous body, and the heating body at least partially overlaps with the projection of the second area along the first direction of the porous body.

2. The heating assembly according to claim 1, characterized in that: The end wall portion includes an annular wall, which is arranged around the outer circumference of the second surface and has a first hollow groove formed on the second surface. The first hollow groove is arranged corresponding to the second area.

3. The heating assembly according to claim 2, characterized in that: The end wall portion further includes an extension wall, which extends from the inner edge of the annular wall into the first hollow groove.

4. The heating assembly according to claim 3, characterized in that: The end wall portion includes a plurality of extension walls, and the plurality of extension walls are arranged at intervals along the circumferential direction of the annular wall.

5. The heating assembly according to claim 4, characterized in that: The end wall portion further includes a connecting wall, which is disposed in the first hollow groove, and one end of each of the plurality of extending walls away from the annular wall is connected to the connecting wall.

6. The heating assembly according to claim 5, characterized in that: A second hollow groove is provided in the connecting wall, and the second hollow groove is not connected to the first hollow groove.

7. The heating assembly according to any one of claims 1 to 6, characterized in that: The second surface is provided with an installation step, and the end wall portion is arranged in the installation step so that the end wall portion is flush with the second surface, or the second surface protrudes from the end wall portion.

8. The heating assembly according to any one of claims 1 to 6, characterized in that: At least a portion of the end wall portion is embedded in the porous body.

9. The heating assembly according to any one of claims 1 to 6, characterized in that: A short-circuit prevention distance along a first direction of the porous body is provided between one end of the side wall portion facing the first surface and the first surface.

10. The heating assembly according to any one of claims 1 to 6, characterized in that: A groove is provided on the outer edge of the first surface, and the side wall portion protrudes from the bottom wall of the groove along the first direction of the porous body.

11. The heating assembly according to any one of claims 1 to 6, characterized in that: The heating assembly further includes a pot body, wherein a receiving cavity is formed in the pot body, and the pot body is sleeved on the outer periphery of the heat equalizer so that the second surface is connected to the receiving cavity.

12. An electronic atomization device, characterized in that: It comprises a main body and a heating component as described in any one of claims 1 to 11, wherein the heating component is arranged in the main body, the main body comprises an air inlet, an air outlet and an air flow channel connecting the air inlet and the air outlet, and the first surface of the porous body is connected to the air flow channel.

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