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 rigid body, and the porous body is provided with a first surface; the heating body is embedded in the first surface, a protection gap is formed between the outer edge of the heating body and the edge of the first surface in the first direction, the protection gap is larger than or equal to a first protection distance D1, the first protection distance D1 is larger than or equal to 0.5 mm and smaller than or equal to 2mm, and the first direction is parallel to the first surface; the heat conductivity coefficient of the rigid body is larger than that of the porous body, the rigid body comprises a side wall part, and the side wall part wraps the peripheral side face of the porous body. According to the scheme, the situation that the distance between the heating body and the peripheral side face of the porous body is too close can be avoided, the porous body has enough strength, and brittle rupture of the edge of the porous body is effectively prevented.

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. For an atomizing medium with greater viscosity and poor fluidity, the atomizing medium has a problem of uneven heating on the surface of the porous body, which leads to inconsistent atomizing medium consumption rates on the surface of the porous body. In high-temperature areas, there is a problem of overheating, which leads to a burnt taste and affects the taste. In the related art, a rigid body can be provided on the basis of the porous body and formed into an integral part with the porous body, and the heat equalization effect of the rigid body is utilized to make the temperature field on the surface of the porous body uniformly distributed. However, since the porous body usually has a certain brittleness, when the rigid body is combined with the porous body, the risk of the porous body breaking will be further increased, resulting in a decrease in the manufacturing yield and manufacturing yield of the heating component. Utility Model Content

[0004] In order to solve at least one of the above-mentioned technical problems, the present application provides a heating component and an electronic atomization device, which can avoid the heating element from being too close to the outer peripheral side of the porous body, so that the porous body itself has sufficient strength, and effectively prevents the edge of the porous body from being brittle and cracked. The technical solution adopted is as follows.

[0005] The heating component provided in the first aspect of the present application includes a porous body, a heating body and a rigid body, the porous body having a first surface; the heating body is embedded in the first surface, and a protective gap is provided between the outer edge of the heating body and the edge of the first surface along the first direction, the protective gap is greater than or equal to the first protective distance D1, and the first protective distance D1 satisfies 0.5mm≤D1≤2mm, wherein the first direction is parallel to the first surface; the thermal conductivity of the rigid body is greater than the thermal conductivity of the porous body, and the rigid body includes a side wall portion, and the side wall portion is covered on the outer peripheral side of the porous body.

[0006] In certain embodiments of the present application, the heating body includes an electrode portion and a heating portion, the electrode portion is arranged at both ends of the heating portion, the heating portion is bent on the first surface, and the first protective distance is provided between the edge of at least one of the heating portion and the electrode portion and the edge of the first surface.

[0007] In some embodiments of the present application, the heating portion bends and extends along a first direction on the first surface, and an extension length along a second direction gradually decreases from the center to the periphery of the first surface, wherein the second direction is perpendicular to the first direction.

[0008] In certain embodiments of the present application, the curved region of the heating portion is bent and embedded in the porous body.

[0009] In some embodiments of the present application, the heat-generating portion is arranged in a spiral and curved manner on the first surface.

[0010] In certain embodiments of the present application, a plurality of cutouts are provided in the heat generating portion, and the plurality of cutouts are spaced apart along an extension direction of the heat generating portion.

[0011] In certain embodiments of the present application, a groove is provided at the outer edge of the first surface, and a protective gap is provided between the edge of the heating element and the opening of the groove. The protective gap is greater than or equal to the second protective distance D2, and the second protective distance D2 satisfies 0.5mm≤D2≤2mm.

[0012] In certain embodiments of the present application, the connection direction of the two electrode portions is parallel to the first direction, the first surface is provided with two grooves, and the connection line between the two grooves intersects with the connection line between the two electrode portions.

[0013] In certain embodiments of the present application, the side wall portion protrudes from the bottom wall of the groove along the thickness direction of the porous body.

[0014] In certain embodiments of the present application, the rigid body is further provided with an end wall portion, and the porous body further has a second surface facing away from the first surface, the end wall portion extends from the side wall portion to the second surface, and the end wall portion is embedded in the second surface or covers the second surface.

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

[0016] In a second aspect, the present application also provides an electronic atomization device, comprising the heating component provided in the first aspect.

[0017] The embodiments of the present application have at least the following beneficial effects: by setting the first protective distance D1, it is possible to ensure that there is a sufficient distance between the edge of the heating element and the edge of the first surface. When the heating element is set on the first surface, the first protective distance D1 can prevent the heating element from being too close to the outer peripheral side of the porous body, thereby ensuring that the porous body itself has sufficient strength, and can effectively prevent the edge of the porous body from being brittle and cracked under the embedding force of the heating element and the extrusion force of the side wall, thereby effectively solving the problem of unreliable connection between the porous body and the rigid body, and improving the finished product rate and yield rate of the porous body manufacturing. 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;

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

[0021] Figure 3 for Figure 2 AA cross-section of

[0022] Figure 4 A schematic structural diagram of a first example of a heating element of a heating assembly provided in an embodiment of the present application from a first viewing angle;

[0023] Figure 5 A schematic structural diagram of a first example of a heating element of a heating assembly provided in an embodiment of the present application from a second viewing angle;

[0024] Figure 6 A schematic structural diagram of a second example of a heating element of a heating assembly provided in an embodiment of the present application from a first viewing angle;

[0025] Figure 7 A schematic structural diagram of a second example of a heating element of a heating assembly provided in an embodiment of the present application from a second viewing angle;

[0026] Figure 8 A schematic structural diagram of a third example of a heating element of a heating assembly provided in an embodiment of the present application;

[0027] Figure 9 for Figure 3 A partial enlarged view of point B;

[0028] Figure 10 for Figure 1 CC cross-section diagram.

[0029] Reference numerals:

[0030] 100. Heating component;

[0031] 10. porous body; 11. first surface; 111. groove; 12. second surface;

[0032] 20. Heating element; 21. Electrode portion; 22. Heating portion; 221. Cutout; 222. Connection point; 23. Pin;

[0033] 30. Rigid body; 31. Side wall; 32. End wall;

[0034] 40. Pot body; 41. Accommodation cavity. DETAILED DESCRIPTION

[0035] The following combination Figures 1 to 10 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.

[0036] 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.

[0037] 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.

[0038] First, see Figures 1 to 3 The present application provides a heating component 100, comprising a porous body 10, a heating element 20 and a rigid body 30. The porous body 10 has a first surface 11, the heating element 20 is embedded in the first surface 11, and a protective gap is provided between the outer edge of the heating element 20 and the edge of the first surface 11 along the first direction. The protective gap is greater than or equal to the first protective distance D1, and the first protective distance D1 satisfies 0.5mm≤D1≤2mm, wherein the first direction is parallel to the first surface 11. The thermal conductivity of the rigid body 30 is greater than the thermal conductivity of the porous body 10. The rigid body 30 includes a side wall portion 31, and the side wall portion 31 is coated on the outer peripheral side surface of the porous body 10. Since the outer peripheral side surface of the porous body 10 is coated with the side wall portion 31 of the rigid body 30, the side wall portion 31 will exert a force on the outer peripheral side surface of the porous body 10. At the same time, in order to combine with the porous body 10, the heating element 20 is usually connected to the porous body 10 in an embedded manner. Therefore, by setting the first protective distance D1, it can be ensured that there is a sufficient distance between the edge of the heating element 20 and the edge of the first surface 11. When the heating element 20 is set on the first surface 11, the first protective distance D1 can prevent the heating element 20 from being too close to the outer peripheral side of the porous body 10, thereby ensuring that the porous body 10 itself has sufficient strength, and can effectively prevent the edge of the porous body 10 from being brittle under the embedding force of the heating element 20 and the extrusion force of the side wall portion 31, thereby effectively solving the problem of loose connection between the porous body 10 and the rigid body 30, and improving the finished product rate and yield rate of the porous body 10.

[0039] Exemplarily, the first protective distance D1 can be 0.5mm, 0.6mm, 0.8mm, 1.0mm, 1.5mm, 1.8mm, 2.0mm, etc. The specific value can be flexibly set according to the actual size of the porous body 10, the heating power of the heating element 20, and the heating demand, and is not limited here. On the one hand, by setting the first protective distance to be greater than the lower limit of 0.5mm, it is possible to ensure that there is a sufficient distance between the edge of the heating element 20 and the edge of the first surface 11, so that the edge of the first surface 11 of the porous body 10 has sufficient strength. On the other hand, by setting the first protective distance not to exceed the upper limit of 2mm, the area of the first surface 11 can be fully used to set the heating element 20, avoiding waste caused by leaving too large a blank area on the first surface 11.

[0040] It is understood that when the heating element 20 is heated, its heat can be dissipated along the thickness direction of the porous body 10 (such as Figure 3The z direction shown in the figure is transferred from the first surface 11 to the other surface of the porous body 10 (for example, the second surface 12), and the central area of the second surface 12 is heated first. Since the thermal conductivity of the porous body 10 itself is low, the heating rate of the peripheral area located on the periphery of the central area is relatively slow. By utilizing the rigid body 30 provided in the present application and the characteristic that the rigid body 30 has a high thermal conductivity, the heat of the first surface 11 of the porous body 10 can be transferred to the second surface 12 along the peripheral side of the porous body 10 through the side wall portion 31 of the rigid body 30, thereby increasing the speed at which heat is transferred from the heating element 20 to the peripheral area, making the temperature field distribution between the peripheral area and the central area of the second surface 12 more uniform, thereby making the atomized medium on the second surface 12 able to be consumed at a uniform rate, preventing the burnt smell caused by the local high temperature in the central area of the second surface 12, or the problem of residual atomized medium caused by insufficient temperature in the peripheral area, thereby improving the heating effect of the heating component 100 and the user's experience.

[0041] Optionally, the porous body 10 can be porous ceramics, porous glass, etc., or other synthetic or natural materials with a porous structure. In some specific examples, the thermal conductivity of the rigid body 30 is 5 to 25 times that of the porous body 10. It can be seen that the thermal conductivity of the rigid body 30 is much greater than the thermal conductivity of the porous body 10. In this way, the rapid thermal conductivity of the rigid body 30 can be utilized to achieve rapid transfer of heat from the first surface 11 of the porous body 10 to the peripheral area of the second surface 12 of the porous body 10, thereby shortening the heating time difference between the peripheral area and the central area of the second surface 12 of the porous body 10, so that the heating speed of each part of the second surface 12 tends to be consistent, achieving a more uniform temperature field distribution on the second surface 12. In some specific examples, the thermal conductivity of the rigid body 30 is 5 to 25 times that of the porous body 10 . For example, the thermal conductivity of the rigid body 30 is 5, 10, 15, 20, 25, etc. times that of the porous body 10 .

[0042] In some specific examples, the thermal conductivity of the porous body 10 is 0.8 to 2.5 W / (m·K), and the rigid body 30 can be made of a hard metal material, such as stainless steel or other alloys. It is understood that in other embodiments, the rigid body 30 can also be made of other non-metallic hard materials.

[0043] Optionally, the heating element 20 is a sheet made of metal material, which can be formed by etching, laser engraving, and stamping. The porous body 10 and the heating element 20 can be integrally formed, for example, sintered at the same time, so that the heating element 20 can be embedded in the porous body 10, wherein the heating element 20 can be completely embedded in the first surface 11, or partially embedded in the first surface 11, and partially exposed outside the first surface 11. Or in other examples, the porous body 10, the heating element 20 and the rigid body 30 are formed at the same time. Or in other examples, the porous body 10 and the rigid body 30 are integrally formed. The specific molding method is not the main improvement point of this application, and the structure and operation of the integral molding have been recorded in the relevant technology for ordinary technicians in this field, and will not be described in detail here. The structure of the heating element 20 will be introduced below.

[0044] In some embodiments, the heating element 20 includes an electrode portion 21 and a heating portion 22. The electrode portion 21 is provided at both ends of the heating portion 22. The heating portion 22 is bent on the first surface 11. A first protective distance is provided between the edge of at least one of the heating portion 22 and the electrode portion 21 and the edge of the first surface 11. The electrode portion 21 of the heating element 20 is used to achieve electrical connection with an external circuit, and the heating portion 22 is powered by electricity through the external circuit to achieve the effect of heating. By bending the heating portion 22 on the first surface 11, a longer heating portion 22 can be provided in the limited area of the first surface 11, thereby improving the heating efficiency. Figures 4 to 8 As shown, the heating portion 22 and the electrode portion 21 are arranged in a curved and spiral state on the first surface 11. Therefore, by defining a first protective distance between the edge of the electrode portion 21 of the heating element 20 or the edge of the heating portion 22 and the edge of the first surface 11, it is ensured that both the heating portion 22 and the electrode portion 21 can form a sufficient distance from the edge of the porous body 10. Optionally, the heating portion 22 and the electrode portion 21 can both meet the setting of the first protective distance, or either the heating portion 22 or the electrode portion 21 can meet the setting of the first protective distance.

[0045] For example, the porous body 10 can be configured in a cylindrical, block-shaped, prismatic, or other shape. That is, the cross-sectional shape of the porous body 10 can be circular, rectangular, polygonal, or other, or elliptical or other irregular shapes. The following describes several arrangements of the heat generating portion 22 using the example of a cylindrical porous body 10 (i.e., a circular first surface 11).

[0046] In the first example, see Figure 4 and Figure 5, the heating portion 22 is bent and extended along the first direction x on the first surface 11, and the extension length along the second direction y gradually decreases from the center of the first surface 11 to the periphery, wherein the second direction y is perpendicular to the first direction x. That is, the heating portion 22 is arranged to bend back and forth along the first 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.

[0047] In the second example, see Figure 6 and Figure 7 , 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.

[0048] 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.

[0049] In the third example, see Figure 8 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.

[0050] It is understandable that no matter which of the three arrangements of the heating portion 22 is adopted, the heating element 20 can also 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 detaching from the porous body 10. Alternatively, the heating element 20 and the porous body 10 can be sintered as a whole, and the pins 23 are embedded in the porous body 10 and fixed by sintering to achieve the connection and fixation of the heating element 20 and the porous body 10.

[0051] 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.

[0052] 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 thickness direction of the porous body 10. Figure 9 The distance h between the side wall portion 31 and the bottom wall of the groove 111 along the thickness direction z of the porous body 10 is provided. The groove 111 forms 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 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.

[0053] In some embodiments, a protective gap is provided between the edge of the heating element 20 and the opening of the groove 111, and the protective gap is greater than or equal to the second protective distance D2, and the second protective distance D2 satisfies 0.5mm≤D2≤2mm. Since the groove 111 forms a certain gap on the first surface 11 of the porous body 10, such a gap makes the thickness of the porous body 10 thinner. Therefore, when setting the heating element 20 and considering the protective distance, the groove 111 also needs to be taken into consideration. After the groove 111 is set on the outer edge of the first surface 11, the opening position of the groove 111 is formed as a new "edge". By setting the second protective distance for the opening of the groove 111, the heating element 20 can be prevented from being too close to the groove 111, thereby ensuring that the position of the groove 111 has sufficient strength to prevent the porous body 10 from being broken at the groove 111.

[0054] Exemplarily, the second protection distance D2 can be 0.5mm, 0.6mm, 0.8mm, 1.0mm, 1.5mm, 1.8mm, 2.0mm, etc. The specific value can be flexibly set according to the actual size of the porous body 10, the size of the groove 111, etc., and is not limited here. On the one hand, by setting the second protection distance to be greater than the lower limit of 0.5mm, it is possible to ensure that there is a sufficient distance between the edge of the heating element 20 and the groove 111, so that the edge of the groove 111 of the porous body 10 has sufficient strength. On the other hand, by setting the second protection distance not to exceed the upper limit of 2mm, the area of the first surface 11 can be fully used to set the heating element 20, avoiding waste caused by leaving too large a blank area on the first surface 11.

[0055] In some embodiments, the connection direction of the two electrode portions 21 is parallel to the first direction, and the first surface 11 is provided with two grooves 111, and the two grooves 111 are spaced apart along the second direction. Since the electrode portions 21 are provided at both ends of the heating portion 22, and the electrode portions 21 are generally difficult to bend and spiral, the electrode portions 21 are located at both ends of the heating portion 22 and protrude from the heating portion 22 on the basis of the bending setting of the heating portion 22. Therefore, the two electrode portions 21 are arranged along the first direction, and the two grooves 111 are arranged along the second direction, and the first direction is perpendicular to the second direction. In this way, the space of the first surface 11 can be fully utilized, so that the electrode portion 21 of the heating element 20 can meet the setting requirement of having a first protective distance with the edge of the first surface 11, and the heating element 22 can also meet the second protective distance with the opening edge of the groove 111, thereby increasing the coverage area of the heating element 20 while ensuring that the porous body 10 is not easily broken.

[0056] It should be noted that at least one of the first protection distance D1 and the second protection distance D2 in the above embodiment is the minimum protection gap between the outer edge of the heating element 20 and the outer peripheral edge of the first surface 11 of the porous body 10 .

[0057] In some embodiments, please refer to Figure 9 The rigid body 30 is further provided with an end wall portion 32. The porous body 10 further has a second surface 12 facing away from the first surface 11. The end wall portion 32 extends from the side wall portion 31 to the second surface 12. The end wall portion 32 is embedded in or covers the second surface 12. By providing the end wall portion 32, heat can be quickly transferred to the peripheral area of the second surface 12 by utilizing the end wall portion 32, thereby increasing the speed of heat transfer from the heating element 20 to the peripheral area, and making the temperature field distribution of the second surface 12 more uniform.

[0058] In some embodiments, see Figure 1 and Figure 10The heating component 100 also includes a pot body 40, in which a receiving cavity 41 is formed. The porous body 10 also has a second surface 12 facing away from the first surface 11. The pot body 40 is sleeved on the outer periphery of the rigid body 30 so that the second surface 12 is connected to the receiving cavity 41. The receiving cavity 41 formed by the pot body 40 can be used to accommodate and store atomizing medium. As an example, the heating component of the embodiment of the present application can be used to heat and atomize a high-viscosity fluid or semi-fluid atomizing matrix, such as tobacco paste. 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.

[0059] In a second aspect, the present application further provides an electronic atomization device (not shown), which includes the heating assembly 100 provided in the first aspect. The heating assembly 100 can heat the atomization medium to form an aerosol, which is released through the air outlet of the electronic atomization device for inhalation by the user.

[0060] 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.

[0061] 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.

[0062] 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; A heating element is embedded in the first surface, a protective gap is provided between an outer edge of the heating element and an edge of the first surface along a first direction, the protective gap is greater than or equal to a first protective distance D1, and the first protective distance D1 satisfies 0.5 mm ≤ D1 ≤ 2 mm, wherein the first direction is parallel to the first surface; A rigid body, wherein the thermal conductivity of the rigid body is greater than the thermal conductivity of the porous body, and the rigid body includes a side wall portion, wherein the side wall portion is coated on the outer peripheral side surface of the porous body.

2. The heating assembly according to claim 1, characterized in that: The heating element includes an electrode portion and a heating portion, the electrode portion is arranged at both ends of the heating portion, the heating portion is bent on the first surface, and the first protective distance is provided between the edge of at least one of the heating portion and the electrode portion and the edge of the first surface.

3. The heating assembly according to claim 2, characterized in that: The heat generating portion is bent and extended along a first direction on the first surface, and an extension length along a second direction gradually decreases from the center to the periphery of the first surface, wherein the second direction is perpendicular to the first direction.

4. The heating assembly according to claim 3, characterized in that: The bending area of the heating portion is bent and embedded in the porous body.

5. The heating assembly according to claim 2, characterized in that: The heat generating portion is disposed on the first surface in a spiral and curved manner.

6. The heating assembly according to any one of claims 2 to 5, characterized in that: The heat generating portion is provided with a plurality of cutouts, which are arranged at intervals along the extending direction of the heat generating portion.

7. The heating assembly according to any one of claims 2 to 5, characterized in that: A groove is provided on the outer edge of the first surface, and a protective gap is provided between the edge of the heating element and the opening of the groove. The protective gap is greater than or equal to a second protective distance D2, and the second protective distance D2 satisfies 0.5mm≤D2≤2mm.

8. The heating assembly according to claim 7, characterized in that: The connection direction of the two electrode parts is parallel to the first direction. The first surface is provided with two grooves. The connection line between the two grooves intersects with the connection line between the two electrode parts.

9. The heating assembly according to claim 7, characterized in that: The side wall portion protrudes from the bottom wall of the cut groove along the thickness direction of the porous body.

10. The heating assembly according to claim 9, characterized in that: The rigid body is further provided with an end wall portion, and the porous body further has a second surface away from the first surface. The end wall portion extends from the side wall portion to the second surface, and the end wall portion is embedded in the second surface or covers the second surface.

11. The heating assembly according to claim 9, wherein: The heating assembly further includes a pot body having a receiving cavity formed therein. The porous body further includes a second surface facing away from the first surface. The pot body is sleeved on the outer periphery of the rigid body so that the second surface is connected to the receiving cavity.

12. An electronic atomization device, characterized in that: The heating component comprises the heating component according to any one of claims 1 to 11.

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