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 and a second surface which are oppositely arranged in the first direction; the heating body is arranged on the first surface; the rigid body comprises a side wall part and an end wall part, the side wall part wraps the peripheral side face of the porous body, the end wall part extends to the second surface from one end of the side wall part, and the inner side of the other end, facing the first surface, of the side wall part and the periphery of the first surface are arranged at intervals to form a clearance groove. One end of the side wall part and the periphery of the first surface are arranged at an interval, so that when the pot body generates extrusion force on the rigid body, a part of stress can be eliminated by utilizing the interval formed by the clearance groove, and the extrusion force of the rigid body is prevented from directly acting on the outer edge of the first surface. In this way, pressure from the outer edge of the first surface can be eliminated, and the first surface is prevented from being broken.

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 rate 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 and the rigid body is assembled with other components, there is a certain force between the rigid body and the porous body, and the porous body is at risk of breaking under this force. 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 use the gap formed by the air-avoiding groove to eliminate stress and prevent the porous body from breaking. 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 and a second surface arranged opposite to each other along a first direction; the heating body is arranged on the first surface; the rigid body includes a side wall portion and an end wall portion, the side wall portion is covered on the outer peripheral side surface of the porous body, the end wall portion extends from one end of the side wall portion to the second surface, and the inner side of the side wall portion facing the other end of the first surface is spaced apart from the outer periphery of the first surface to form an air avoidance groove.

[0006] In certain embodiments of the present application, the air avoidance groove includes a groove arranged on the outer edge of the first surface.

[0007] In certain embodiments of the present application, the side wall portion protrudes from the bottom wall of the air avoidance groove along the first direction of the porous body.

[0008] In certain embodiments of the present application, the air-avoiding groove is continuously arranged along the outer circumference of the first surface to form an annular groove, or the two ends of the air-avoiding groove are spaced apart to form at least one arc-shaped groove.

[0009] In certain embodiments of the present application, the side wall portion is further provided with a limiting structure, which is connected to the first surface. The limiting structure includes a claw arranged at one end of the side wall portion away from the end wall portion, and the claw is bent toward the center of the porous body. The claw is embedded in the porous body, or the claw abuts against the edge of the first surface, and the claw and the air avoidance groove are spaced apart on the first surface.

[0010] In some embodiments of the present application, a protective gap is provided between the edge of the heating element and the opening of the air avoidance groove, and the protective gap is greater than or equal to a first protective distance D1, and the first protective distance D1 satisfies 0.5mm≤D1≤2mm.

[0011] In certain embodiments of the present application, two air-avoidance grooves are spaced apart on the first surface, 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 line between the two air-avoidance grooves intersects with the line between the two electrode portions.

[0012] In certain embodiments of the present application, the rigid body is a hard metal, and the thermal conductivity of the rigid body is greater than the thermal conductivity of the porous body.

[0013] 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.

[0014] In a second aspect, the present application also provides an electronic atomization device, comprising the heating component provided in the first aspect.

[0015] The embodiments of the present application have at least the following beneficial effects: by spacing one end of the side wall from the outer periphery of the first surface, when the pot body exerts a compressive force on the rigid body, the spacing formed by the air-avoidance groove can partially eliminate the stress, thereby preventing the compressive force of the rigid body from directly acting on the outer edge of the first surface. In this way, the pressure on the outer edge of the first surface can be eliminated, thereby ensuring that the first surface has sufficient strength even when a heating element is installed, and preventing the first surface from breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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.

[0017] 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;

[0018] Figure 2 A schematic structural diagram of a first example of a heating assembly provided in an embodiment of the present application from a second viewing angle;

[0019] Figure 3 for Figure 1 AA cross-section of

[0020] Figure 4 for Figure 3 A partial enlarged view of point B;

[0021] Figure 5 A schematic structural diagram of an example of an air-avoiding groove of a heating assembly provided in an embodiment of the present application;

[0022] Figure 6 A schematic structural diagram of a second example of a heating assembly provided in an embodiment of the present application;

[0023] Figure 7 A schematic structural diagram of a third example of a heating assembly provided in an embodiment of the present application;

[0024] Figure 8 for Figure 7 DD profile;

[0025] Figure 9 A schematic structural diagram of a first example of a heating element of a heating assembly provided in an embodiment of the present application;

[0026] Figure 10 A schematic structural diagram of a second example of a heating element of a heating assembly provided in an embodiment of the present application;

[0027] Figure 11 A schematic structural diagram of a third example of a heating element of a heating assembly provided in an embodiment of the present application;

[0028] Figure 12 for Figure 6 CC cross-section diagram.

[0029] Reference numerals:

[0030] 100. Heating component;

[0031] 10. porous body; 11. first surface; 111. air-avoiding 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; 311. Position limiting structure; 3113. Clamping claw; 32. End wall;

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

[0035] The following combination Figures 1 to 12 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] In the related art, the porous body, the heating element and the rigid body in the heating assembly constitute the atomizing core. The heating assembly usually also includes a pot body, which is used to store the atomizing medium. The atomizing medium forms an aerosol by infiltrating into the porous body and undergoing heating and atomization. Usually, the atomizing core and the pot body are assembled in an interference fit manner. For example, the pot body is provided with an open through hole, and the atomizing core is interference-connected with the open through hole to ensure the sealing of the connection between the atomizing core and the pot body. However, the pot body and the rigid body are usually made of hard materials, both of which have a certain rigidity, and the porous body usually has a certain brittleness. Therefore, on the one hand, when the atomizing core is interference-connected with the pot body, the squeezing force of the pot body on the atomizing core will be transmitted to the porous body through the rigid body, thereby increasing the risk of cracking of the porous body. On the other hand, the heating element and the porous body are usually formed by integral sintering, that is, a part of the heating element will be embedded in the porous body, which will further aggravate the stress inside the porous body, thereby further increasing the risk of the porous body breaking.

[0039] Based on this, the first aspect of the present application provides a heating assembly 100, see Figures 1 to 4 The heating assembly 100 includes a porous body 10, a heating element 20 and a rigid body 30. The porous body 10 has a first surface 11 and a second surface 12 arranged opposite to each other along a first direction, and the heating element 20 is arranged on the first surface 11. The rigid body 30 includes a side wall portion 31 and an end wall portion 32. The side wall portion 31 is covered on the outer peripheral side of the porous body 10, and the end wall portion 32 extends from one end of the side wall portion 31 to the second surface 12. The inner side of the other end of the side wall portion 31 facing the first surface 11 is spaced apart from the outer periphery of the first surface 11 to form an air avoidance groove 111. By spacing one end of the side wall portion 31 apart from the outer periphery of the first surface 11, when the pot body 40 generates an extrusion force on the rigid body 30, the space formed by the air avoidance groove 111 can be used to eliminate part of the stress, thereby preventing the extrusion force of the rigid body 30 from directly acting on the outer edge of the first surface 11. In this way, the pressure from the outer edge of the first surface 11 can be eliminated, thereby ensuring that the first surface 11 has sufficient strength even when the heating element 20 is provided, thereby preventing the first surface 11 from being broken.

[0040] It is understandable that when the heating element 20 is heating, its heat can be dissipated along the first direction of the porous body 10 (such as Figure 4The 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] 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 the like, 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. Alternatively, when the porous body 10 is a flat disc-shaped structure, the first direction refers to the thickness direction of the disc. Alternatively, when the porous body 10 is a block-shaped or irregularly 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 the atomized medium so that the atomized medium penetrates into the interior of the porous body 10, and the first surface 11 is used to set the heating element 20, 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. When the atomized medium penetrates the first surface 11 inside the porous body 10, the heating element 20 is powered and heated, thereby heating the atomized medium and atomizing it to form an aerosol. 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.

[0042] Optionally, the porous body 10 may be porous ceramics, porous glass, etc., or other synthetic or natural materials with a porous structure.

[0043] In some embodiments, the thermal conductivity of the rigid body 30 is much greater than that of the porous body 10. Thus, the rapid thermal conductivity of the rigid body 30 can be utilized to rapidly transfer heat from the first surface 11 of the porous body 10 to the peripheral region of the second surface 12 of the porous body 10, thereby shortening the heating time difference between the peripheral region and the central region of the second surface 12 of the porous body 10. This allows the heating rates of various portions of the second surface 12 to converge, resulting in a more uniform temperature 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.

[0044] 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.

[0045] 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 formed as one piece, for example, sintered at the same time, so that the heating element 20 can be embedded in the porous body 10. 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 formed as one piece. The specific molding method is not the main improvement point of this application, and the structure and operation of the one-piece 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 air avoidance groove 111 will be introduced below.

[0046] Optionally, there are at least two specific ways to form the air-avoiding groove 111, see Figure 4 and Figure 5 The first method is to provide a groove on the outer edge of the first surface 11 (such as Figure 4 As shown), the groove is formed into an air-avoiding groove 111. The groove can be formed by removing a portion of the porous body 10 structure on the first surface 11. The groove structure is the air-avoiding groove 111. The groove can also be directly formed when the porous body 10 is sintered. In other examples, the second way to form the air-avoiding groove 111 can be achieved by thinning the side wall portion 31 (as shown in FIG. Figure 5That is, the inner wall surface of the sidewall portion 31 gradually becomes thinner from the second surface 12 of the porous body 10 toward the first surface 11 (i.e., the first direction z of the porous body 10), thereby forming a gap between the sidewall portion 31 and the outer periphery of the first surface 11. This gap forms the air-avoiding groove 111. Of course, the two aforementioned methods for forming the air-avoiding groove 111 are merely illustrative, and this embodiment does not limit the specific method for forming the air-avoiding groove 111.

[0047] In some embodiments, the side wall portion 31 protrudes from the bottom wall of the air-avoiding groove 111 along the first direction of the porous body 10. Figure 4 The distance h along the first direction z of the porous body 10 that the side wall portion 31 protrudes from the bottom wall of the air-avoidance groove 111 is denoted by . The air-avoidance groove 111 forms a 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. The air-avoidance groove 111 prevents the squeezing force from 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.

[0048] In some embodiments, the air-avoiding groove 111 is continuously arranged along the outer periphery of the first surface 11 to form an annular groove, or the two ends of the air-avoiding groove 111 are spaced apart to form at least one arc-shaped groove. This means that the air-avoiding groove 111 can be arranged as a continuous annular groove or as one or more discontinuous arc-shaped grooves (such as Figure 2 When the air-avoidance groove 111 is configured as an annular groove, the stress of the sidewall portion 31 can be eliminated along the circumference of the first surface 11, thereby preventing the first surface 11 from breaking. When the air-avoidance groove 111 is configured as an arcuate groove, the volume of the portion removed from the porous body 10 can be reduced, and the area occupied by the air-avoidance groove 111 can be reduced. In this case, more space can be provided on the first surface 11 for arranging the heating element 20, thereby increasing the installation area of the heating element 20 and increasing the overall structural strength of the porous body 10.

[0049] In some embodiments, see Figure 7 and Figure 8The side wall portion 31 is also provided with a limiting structure 311, which is connected to the first surface 11. The limiting structure includes a claw 3113 provided at one 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, and the claw 3113 is embedded in the porous body 10, or the claw 3113 abuts against the edge of the first surface 11. The claw 3113 and the air avoidance groove 111 are spaced apart on the first surface 11. By providing the claw 3113, the bent portion of the claw 3113 can be used to provide an axial fastening force to the rigid body 30, thereby preventing the rigid body 30 from detaching along the first direction z of the porous body 10. Since the porous body 10 is usually brittle and prone to brittle cracking, the provision of the claw 3113 can also reduce the area of the limiting structure 311 embedded in the porous body 10 while ensuring that the rigid body 30 and the porous body 10 have sufficient connection strength, thereby reducing the risk of cracking of the porous body 10. By arranging the claws 3113 and the air-avoiding groove 111 at intervals, it is possible to avoid concentrated force on the air-avoiding groove 111, thereby ensuring that the air-avoiding groove 111 can play a role in eliminating stress and at the same time ensuring that the porous body 10 has sufficient strength.

[0050] In some embodiments, a first protective distance D1 is provided between the edge of the heating element 20 and the opening of the air-avoidance groove 111, and the first protective distance D1 satisfies 0.5 mm ≤ D1 ≤ 2 mm. Since the air-avoidance groove 111 forms a certain gap in 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 air-avoidance groove 111 also needs to be taken into consideration. After the air-avoidance groove 111 is set at the outer edge of the first surface 11, the opening position of the air-avoidance groove 111 forms a new "edge". Therefore, 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 20 and the edge of the air-avoidance groove 111. 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 edge of the air-avoidance groove 111, thereby ensuring that the porous body 10 itself has sufficient strength, and can effectively prevent the first surface 11 from being brittle and cracked under the embedding force of the heating element 20 and the extrusion force of the side wall portion 31, thereby solving the problem of unreliable 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 manufacturing.

[0051] 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 size of the air-avoiding groove 111, etc., 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 can be ensured that there is a sufficient distance between the edge of the heating element 20 and the air-avoiding groove 111, so that the edge of the air-avoiding groove 111 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.

[0052] Of course, in other examples, see Figure 6 When the air-avoidance groove 111 is configured as an arcuate groove, this means that there is a certain area on the outer edge of the first surface 11 where the air-avoidance groove 111 is not provided. A second protective distance D2 can also be provided between the outer edge of this location and the heating element 20. Specifically, a second protective distance D2 is provided between the outer edge of the heating element 20 and the edge of the first surface 11 along the second direction. The second protective distance D2 satisfies 0.5 mm ≤ D2 ≤ 2 mm, where the second direction is parallel to the first surface 11. By setting the second protective distance D2, 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. When the heating element 20 is set on the first surface 11, the second protective distance D2 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 and cracked 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 unreliable 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.

[0053] Exemplarily, the second protective 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 heating power of the heating element 20, and the heating demand, and is not limited here. On the one hand, by setting the second 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 second 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.

[0054] In some embodiments, two air-avoiding grooves 111 are provided at intervals on the first surface 11, 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, and the heating portion 22 is provided in a curved manner on the first surface 11, and the line between the two air-avoiding grooves 111 intersects with the line between the two electrode portions 21, for example, they can be provided perpendicular to each other (such as Figure 9 and Figure 11 As shown), or they are arranged at acute angles to each other. Since the electrode portion 21 is arranged at both ends of the heating portion 22, and the electrode portion 21 is usually difficult to be bent and coiled, the electrode portion 21 is located at both ends of the heating portion 22 and protrudes from the heating portion 22 on the basis of the bending setting of the heating portion 22. Therefore, the line between the two air-avoiding grooves 111 is intersected with the line between the two electrode portions 21. 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 can also make the heating element 22 meet the second protective distance with the opening edge of the air-avoiding groove 111, thereby increasing the coverage area of the heating element 20 under the premise that the porous body 10 is not easy to break.

[0055] In some embodiments, see Figure 6 and Figure 12 The heating assembly 100 further includes a pot body 40 having a receiving cavity 41 formed therein. The porous body 10 further includes a second surface 12 facing away from the first surface 11. The pot body 40 is sleeved around the outer periphery of the rigid body 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 accommodate and store 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.

[0056] In some specific embodiments, the pot body 40 can be made of a material having a higher thermal conductivity than the rigid 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 rigid body 30, heat transferred from the rigid body 30 can be transferred to the atomizing medium through the inner wall of the accommodating cavity 41.

[0057] The heating element 20 will be described below.

[0058] 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-sinking body can also be integrally formed. In other embodiments, only the porous body 10 and the heat-sinking body can be integrally formed.

[0059] 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.

[0060] Optionally, the heating portion 22 may be arranged in the following manners.

[0061] In the first example, see Figure 9 , 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.

[0062] In the second example, see Figure 10 , 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.

[0063] 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.

[0064] In the third example, see Figure 11 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.

[0065] 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.

[0066] 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.

[0067] In a second aspect, the present application further provides an electronic atomization device (not shown), which includes the heating component 100 provided in the first aspect.

[0068] 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.

[0069] 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.

[0070] 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; a heating element, disposed on the first surface; A rigid body includes a side wall portion and an end wall portion, wherein the side wall portion is covered on the outer peripheral side surface of the porous body, and the end wall portion extends from one end of the side wall portion to the second surface. The inner side of the other end of the side wall portion facing the first surface is spaced apart from the outer periphery of the first surface to form an air-avoiding groove.

2. The heating assembly according to claim 1, characterized in that: The air-avoiding groove includes a groove arranged at an outer edge of the first surface.

3. The heating assembly according to claim 2, characterized in that: The side wall portion protrudes from the bottom wall of the air-avoiding groove along the first direction of the porous body.

4. The heating assembly according to claim 1, wherein: The air-avoiding groove is continuously arranged along the outer circumference of the first surface to form an annular groove, or two ends of the air-avoiding groove are spaced apart to form at least one arc-shaped groove.

5. The heating assembly according to claim 1, wherein: The side wall portion is also provided with a limiting structure, which is connected to the first surface. The limiting structure includes a claw arranged at one end of the side wall portion away from the end wall portion, and the claw is bent toward the center of the porous body. The claw is embedded in the porous body, or the claw abuts against the edge of the first surface, and the claw and the air avoidance groove are spaced apart on the first surface.

6. The heating assembly according to claim 1, characterized in that: A protective gap is provided between the edge of the heating element and the opening of the air-avoiding groove. The protective gap is greater than or equal to a first protective distance D1. The first protective distance D1 satisfies 0.5 mm ≤ D1 ≤ 2 mm.

7. The heating assembly according to claim 6, characterized in that: Two air-avoiding grooves are arranged at intervals on the first surface, and the heating element includes an electrode part and a heating part. The electrode part is arranged at both ends of the heating part, and the heating part is bent on the first surface. The line between the two air-avoiding grooves intersects with the line between the two electrode parts.

8. The heating assembly according to any one of claims 1 to 4, characterized in that: The rigid body is a hard metal, and the thermal conductivity of the rigid body is greater than the thermal conductivity of the porous body.

9. The heating assembly according to any one of claims 1 to 4, characterized in that: 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.

10. An electronic atomization device, characterized in that: The heating component comprises the heating component according to any one of claims 1 to 9.

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