Atomizing core assembly, atomizer and electronic atomizing device

Abstract

The utility model relates to the technical field of atomization, and provides an atomization core assembly, an atomizer and an electronic atomization device.The atomization core assembly comprises a base body and a heating body, the base body comprises a middle heating layer and at least one side heating layer arranged on the two opposite sides of the middle heating layer respectively, and through holes are formed in the middle heating layer and the side heating layers; the heating body is arranged in the through hole; the middle heating layer is further provided with a plurality of first liquid suction holes communicated with the outside, the side heating layers are provided with a plurality of second liquid suction holes communicated with the outside, and the hole diameter of any first liquid suction hole is larger than that of any second liquid suction hole. The atomizing core assembly is used for heating an aerosol substrate in the atomizer. The aperture of the first liquid absorption holes distributed in the middle heating layer of the base body is larger, aerosol matrix particles with larger particle sizes can pass through the first liquid absorption holes, and the liquid absorption rate of the position, close to the middle heating layer, of the base body is effectively increased.

Description

Technical Field

[0001] This application relates to the technical field of atomization, and in particular provides an atomization core assembly, an atomizer, and an electronic atomization device. Background Art

[0002] In the prior art, most atomization core assemblies of atomizers use ceramic heating elements, including a ceramic matrix with a cylindrical hollow structure and a metal heating element fixed on the inner wall surface of the ceramic matrix. The ceramic matrix is provided with liquid suction holes communicating with the outer wall surface and the inner wall surface of the ceramic matrix. The capillary action of the liquid suction holes is used to transport the aerosol matrix to the metal heating element, and the metal heating element heats the aerosol matrix to atomize it.

[0003] However, in the actual atomization heating process, the middle part of the metal heating element heats up faster and has a higher heating temperature than other parts; therefore, there is a higher demand for the liquid suction rate of the middle part of the ceramic matrix; and currently, the liquid suction holes on the common ceramic matrix are evenly distributed, and the aperture sizes of the liquid suction holes are roughly the same. The ceramic matrix cannot provide a faster liquid suction rate for the part of the metal heating element with a higher temperature, and it is easy to cause carbon deposition due to insufficient liquid supply. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide an atomization core assembly, an atomizer, and an electronic atomization device, aiming to solve the problem that the ceramic matrix of the existing atomization core cannot provide a faster liquid suction rate for the part of the metal heating element with a higher temperature, and it is easy to cause carbon deposition due to insufficient liquid supply.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] In the first aspect, the embodiments of this application provide an atomization core assembly, including a matrix and a heating element. The matrix includes an intermediate heating layer and at least one side heating layer respectively disposed on opposite sides of the intermediate heating layer. Through holes are formed in the intermediate heating layer and each side heating layer; the heating element is placed in the through holes; wherein, a plurality of first liquid suction holes communicating with the outside are further opened on the intermediate heating layer, a plurality of second liquid suction holes communicating with the outside are opened on the side heating layer, and the aperture of any one of the first liquid suction holes is larger than the aperture of any one of the second liquid suction holes.

[0007] The beneficial effects of the present application are as follows: The matrix has a multi-layer structure. The aperture of the first liquid absorption holes distributed on the middle heating layer of the matrix is larger than that of the second liquid absorption holes at other positions of the matrix. Subsequently, the middle heating layer can pass aerosol matrix particles with larger particle sizes, effectively improving the liquid absorption rate of the matrix at the position of the middle heating layer. During the heating and atomization process of the atomization core assembly, the heating element closer to the middle part heats up faster and has a higher temperature. Subsequently, the area with a higher temperature of the heating element matches the first liquid absorption holes with larger apertures, thereby effectively improving the atomization efficiency, reducing the phenomenon of carbon deposition, and extending the service life of the atomization core assembly.

[0008] In a possible design, the apertures of all the first liquid absorption holes are equal; or, from the geometric center of the middle heating layer to the side end of the middle heating layer, the apertures of all the first liquid absorption holes gradually decrease.

[0009] By adopting the above technical solution, the apertures of all the first liquid absorption holes can be equal, or the apertures of all the first liquid absorption holes can be distributed in a gradient manner.

[0010] In a possible design, on the same side heating layer, the apertures of all the second liquid absorption holes are equal; or, in the direction from the end close to the middle heating layer to the end far from the middle heating layer on the same side heating layer, the apertures of all the second liquid absorption holes gradually decrease.

[0011] By adopting the above technical solution, the apertures of all the second liquid absorption holes can be equal, or the apertures of all the second liquid absorption holes can be distributed in a gradient manner.

[0012] In a possible design, the porosity of the middle heating layer is greater than that of any side heating layer; and, in the direction from the middle heating layer towards any side heating layer, the porosity of each side heating layer on the same side of the middle heating layer gradually decreases in turn.

[0013] By adopting the above technical solution, the porosity of the side heating layer is less than that of the middle heating layer, and the structural strength of the side heating layer is higher, which is beneficial to providing connection support for the matrix.

[0014] In a possible design, the number of the side heating layers is two, and the two side heating layers are respectively formed on the opposite sides of the middle heating layer; and the two side heating layers are symmetrically arranged with respect to the middle heating layer; when the apertures of all the first liquid absorption holes are equal, the aperture range of the first liquid absorption holes is 30 - 60um; when the apertures of all the second liquid absorption holes are equal, the aperture range of the second liquid absorption holes is 3 - 30um.

[0015] By adopting the above technical solution, the apertures of all the liquid absorption holes are within a suitable range interval.

[0016] In a possible design, the length of the substrate 1 in the axial direction is D1, the length of the intermediate heating layer 4 in the axial direction is D2, and the value range of the ratio of D2 to D1 is 1 / 5 - 2 / 3.

[0017] By adopting the above technical solution, the length of the intermediate heating layer is set accordingly according to the length of the substrate, and a suitable ratio range is taken to greatly improve the atomization efficiency.

[0018] In a possible design, the porosity range of the intermediate heating layer is 30% - 80%; and / or, the porosity range of the side heating layer is 10% - 50%.

[0019] By adopting the above technical solution, the porosity of the side heating layer is less than that of the intermediate heating layer, and the structural strength of the side heating layer is higher, which is beneficial to providing connection support for the substrate.

[0020] In a possible design, the intermediate heating layer and the side heating layer are of an integral structure; or, the intermediate heating layer and the side heating layer are of a split structure.

[0021] By adopting the above technical solution, the intermediate heating layer and the side heating layer can be integrally processed and formed in a mold without secondary assembly, and the integrity is better. It is also possible to pre-fabricate the intermediate heating layer and the side heating layer, and then connect the side heating layer to the intermediate heating layer, and then the intermediate heating layer and the side heating layer can be separately molded and processed to improve the processing and manufacturing efficiency.

[0022] In a second aspect, an embodiment of the present application provides an atomizer, including a main body storing an aerosol matrix and the atomization core assembly provided in the main body, and the atomization core assembly is used to heat and atomize the aerosol matrix.

[0023] In a third aspect, an embodiment of the present application provides an electronic atomization device, including a power supply assembly and the atomizer, and the power supply assembly is used to supply power to the heating element of the atomization core assembly of the atomizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a front structural schematic diagram of the atomization core assembly provided by an embodiment of the present application;

[0026] Figure 2Schematic cross-sectional structure diagram of an atomizing core assembly provided by an embodiment of the present application;

[0027] Figure 3 Schematic three-dimensional structure diagram of an atomizing core assembly provided by an embodiment of the present application, wherein the heating element is a Nautilus heating wire;

[0028] Figure 4 Schematic three-dimensional structure diagram of an atomizing core assembly provided by an embodiment of the present application, wherein the heating element is a heating sheet.

[0029] Among them, each reference numeral in the figure:

[0030] 100, atomizing core assembly;

[0031] 1, substrate; 2, heating element; 3, through hole;

[0032] 4; intermediate heating layer; 5, side heating layer;

[0033] 601, first liquid suction hole; 602, second liquid suction hole;

[0034] 7, electrode lead. Specific embodiments

[0035] The following details the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0038] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] In this application, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions 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 a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0040] In the prior art, most atomizer core components use ceramic heating elements, including a ceramic matrix with a cylindrical hollow structure and a metal heating element fixed on the inner wall surface of the ceramic matrix. The ceramic matrix is provided with liquid suction holes communicating with the outer wall surface and the inner wall surface of the ceramic matrix. The capillary action of the liquid suction holes is used to transport the aerosol matrix to the metal heating element, and the metal heating element heats the aerosol matrix to atomize it. However, in the actual atomization heating process, the middle part of the metal heating element heats up faster and has a higher heating temperature than other parts; therefore, there is a higher demand for the liquid suction rate of the middle part of the ceramic matrix; and currently, the liquid suction holes on the common ceramic matrix are evenly distributed, and the pore sizes of each liquid suction hole are approximately the same, which cannot provide a higher liquid suction rate for the middle part, and it is easy to cause carbon deposition due to insufficient liquid supply.

[0041] Based on this, in order to solve the above problems, this application designs an atomizer core component. The matrix has a multi-layer structure. The pore diameter of the first liquid suction holes distributed on the middle heating layer of the matrix is larger than the pore diameter of the second liquid suction holes at other positions of the matrix. Then, the middle heating layer can pass aerosol matrix particles with a larger particle size, effectively improving the liquid suction rate of the matrix at the position of the middle heating layer. During the heating and atomization process of the atomizer core component, the heating element closer to the middle part heats up faster and has a higher temperature. Then, the area of the heating element with a higher temperature matches the first liquid suction holes with a larger pore diameter, thereby effectively improving the atomization efficiency, reducing the carbon deposition phenomenon, and prolonging the service life of the atomizer core component.

[0042] Please refer toFigure 1 , Figure 2 , an embodiment of the present application provides an atomization core assembly 100, which is applied to an atomizer (not shown) to heat and atomize an aerosol matrix. The atomization core assembly 100 includes a substrate 1 and a heating element 2. The substrate 1 includes an intermediate heating layer 4 and at least one side heating layer 5 disposed on opposite sides of the intermediate heating layer 4. Through holes 3 are formed in the intermediate heating layer 4 and each side heating layer 5; the heating element 2 is disposed in the through holes 3; a plurality of first liquid suction holes 601 communicating with the outside are also formed in the intermediate heating layer 4, and a plurality of second liquid suction holes 602 communicating with the outside are formed in the side heating layer 5, and the aperture of any one of the first liquid suction holes 601 is larger than the aperture of any one of the second liquid suction holes 602.

[0043] Specifically, the substrate 1 forms a porous structure through the first liquid suction holes 601 and the second liquid suction holes 602, and the substrate 1 communicates with the liquid aerosol matrix stored in the atomizer; the heating element 2 is disposed on the inner wall surface of the substrate 1 at the through holes 3, and the substrate 1 can form a capillary action. The aerosol matrix in the atomizer is transported from the outer wall surface of the substrate 1 to the heating element 2 through the liquid suction holes 6, and the heating element 2 heats and atomizes the aerosol matrix. Refer to Figure 2 , the through holes 3 penetrate through the substrate 1 in the axial direction, and in the embodiment of the present application, this axial direction is the height direction of the substrate 1.

[0044] Specifically, the side heating layers 5 are formed on both sides of the intermediate heating layer 4, and the number of the side heating layers 5 is not limited. One or more side heating layers 5 can be formed on one side of the substrate 1 at the intermediate heating layer 4, and one or more side heating layers 5 can also be formed on the other side of the substrate 1 at the intermediate heating layer 4; by way of example, refer to Figure 1 , the substrate 1 can be a three-layer structure, including one intermediate heating layer 4 and one side heating layer 5 located on both sides of the intermediate heating layer 4 respectively; alternatively, the substrate 1 can also be a structure with more than three layers, including one intermediate heating layer 4 and more than 2 side heating layers 5.

[0045] It can be understood that the intermediate heating layer 4 is close to the middle position of the substrate 1, that is, the position of the first liquid suction holes 601 is closer to the middle position of the substrate 1 relative to the second liquid suction holes 602; and during the actual heating and atomization process of the atomization core assembly 100, the heating element 2 closer to the middle part has a faster heating rate and a higher temperature during heating. If the liquid suction rate of the intermediate heating layer 4 is slow, it is easy to cause insufficient liquid supply and carbon deposition. Therefore, the intermediate heating layer 4 has a faster demand for the liquid suction rate relative to the side heating layer 5.

[0046] The atomization core component 100 of the present application has a multi-layer structure for the matrix 1. The aperture diameter of the first liquid suction holes 601 distributed on the middle heating layer 4 of the matrix 1 is larger than that of the second liquid suction holes 602 at other positions of the matrix 1. Consequently, larger aerosol matrix particles can pass through the middle heating layer 4, effectively increasing the liquid suction rate of the matrix 1 at the position of the middle heating layer 4. During the heating and atomization process of the atomization core component 100, the heating element 2 closer to the middle part heats up faster and has a higher temperature. Subsequently, the region with a higher temperature of the heating element 2 is matched with the first liquid suction holes 601 having a larger aperture diameter, thereby effectively improving the atomization efficiency, reducing the carbon deposition phenomenon, and extending the service life of the atomization core component 100.

[0047] Reference Figure 1 、 Figure 2 In some embodiments, the aperture diameters of the first liquid suction holes 601 are equal. That is, the aperture diameters of the first liquid suction holes 601 on the middle heating layer 4 are of equal size and are evenly distributed.

[0048] In still other embodiments, from the geometric center of the middle heating layer 4 to the side end of the middle heating layer 4, the aperture diameters of the first liquid suction holes 601 gradually decrease.

[0049] Specifically, that is, the aperture diameters of the first liquid suction holes 601 are distributed in a gradient manner. The closer the first liquid suction hole 601 is to the geometric center of the middle heating layer 4, the larger its aperture diameter; while the actual temperature distribution of the heating element 2 during the heating process also shows a gradient distribution, and the closer it is to the geometric center of the middle heating layer 4, the higher the temperature. Matching the aperture diameter of the first liquid suction holes 601 with the temperature distribution of the heating element 2 can further improve the atomization efficiency.

[0050] Reference Figure 1 、 Figure 2 In some embodiments, the aperture diameters of the second liquid suction holes 602 on the same side heating layer 5 are equal. That is, the aperture diameters of the second liquid suction holes 602 on the same side heating layer 5 are of equal size and are evenly distributed.

[0051] In still other embodiments, in the direction from the end close to the middle heating layer 4 to the end far from the middle heating layer 5 on the same side heating layer 5, the aperture diameters of the second liquid suction holes 602 gradually decrease.

[0052] Specifically, the aperture diameters of the second liquid suction holes 602 on the same side heating layer 5 are distributed in a gradient manner. That is, on the same side heating layer 5, the closer the second liquid suction hole 602 is to the position of the middle heating layer 4, the larger its aperture diameter. While the actual temperature distribution of the heating element 2 during the heating process also shows a gradient distribution, and the closer it is to the position of the middle heating layer 4, the higher the temperature. Matching the aperture diameter distribution of the second liquid suction holes 602 with the temperature distribution of the heating element 2 can further improve the atomization efficiency.

[0053] In addition, when the pore sizes of the first liquid suction holes 601 are distributed in a gradient manner, and the pore sizes of the second liquid suction holes 602 on a single side heat generating layer 5 are distributed in a gradient manner, the pore size of the first liquid suction hole 601 with the smallest pore size is still larger than the pore size of the second liquid suction hole 602 with the largest pore size.

[0054] In some embodiments, the porosity of the middle heat generating layer 4 is greater than the porosity of any side heat generating layer 5; and, in the direction from the middle heat generating layer 4 towards any side heat generating layer 5, the porosities of the side heat generating layers 5 on the same side of the middle heat generating layer 4 gradually decrease in sequence.

[0055] Specifically, the porosity of the middle heat generating layer 4 is the percentage of the total volume of the first liquid suction holes 601 distributed on the middle heat generating layer 4 in the volume of the middle heat generating layer 4. The first liquid suction holes 601 can be formed not only on the side wall surface of the middle heat generating layer 4, but also on the two opposite end surfaces of the middle heat generating layer 4. The porosity of the side heat generating layer 5 is the percentage of the total volume of the second liquid suction holes 602 distributed on the side heat generating layer 5 in the volume of the side heat generating layer 5. The second liquid suction holes 602 can be formed not only on the side wall surface of the side heat generating layer 5, but also on the two opposite end surfaces of the side heat generating layer 5.

[0056] Reference Figure 1 , in some embodiments, the substrate 1 has a three-layer structure, and the porosity of the middle heat generating layer 4 located in the middle position is greater than the porosity of the side heat generating layer 5 on any one of its sides; it can be understood that the porosity of the middle heat generating layer 4 is designed to be larger, and the liquid suction rate is higher; while the porosities of the two side heat generating layers 5 on both sides are smaller, and the structural strength is higher, and then the structural strength at both ends of the substrate 1 is higher; and the substrate 1 is arranged in the atomizer, and both ends of the substrate 1 are structurally connected and matched with the atomizer, so as to effectively improve the connection stability.

[0057] In some embodiments, the substrate 1 has a structure with three or more layers, and the substrate 1 has 2 or more side heat generating layers 5 on both sides of the middle heat generating layer 4; the porosity of the middle heat generating layer 4 is greater than the porosity of any one side heat generating layer 5, and in the direction of the substrate 1 from the middle heat generating layer 4 towards any side, the porosities of the side heat generating layers 5 of each layer gradually decrease, and then the closer the side heat generating layer 5 is to the middle heat generating layer 4, the larger the porosity is, so that the closer the side heat generating layer 5 is to the middle heat generating layer 4, the faster the liquid suction rate is, corresponding to the temperature distribution that the closer the heating element is to the middle position, the higher the temperature is; while the structural strength of the side heat generating layer 5 farther away from the middle heat generating layer 4 is higher, which is beneficial to improving the structural strength of the substrate 1.

[0058] Refer to Figure 1 , Figure 2, in some embodiments, the number of the side heating layers 5 is two, and the two side heating layers 5 are respectively formed on the opposite sides of the middle heating layer 4; and the two side heating layers 5 are symmetrically arranged relative to the middle heating layer 4; the pore diameters of the first liquid suction holes 601 are equal, and the pore diameters of the second liquid suction holes 602 are equal.

[0059] The preferred solution of the present application is that the substrate 1 has a three-layer structure, including the middle heating layer 4 in the middle and the side heating layers 5 respectively located on both sides of the middle heating layer 4. The structure is relatively simple and easy to process. The pore diameters of the first liquid suction holes 601 on the middle heating layer 4 are all equal, the pore diameters of the second liquid suction holes 602 on the side heating layers 5 are all equal, and the pore diameter of the first liquid suction hole 601 is larger than that of the second liquid suction hole 602; and, the porosity of the middle heating layer 4 is greater than that of the side heating layer 5. Then, along the axial direction of the substrate 1, the pore diameters of the liquid suction holes 6 on each layer structure are distributed from small to large and then from large to small; the porosities of each layer structure are distributed from small to large and then from large to small.

[0060] Specifically, the substrate 1 has an upper and lower symmetric structure, that is, the side heating layers 5 located on both sides of the middle heating layer 4 are symmetrically arranged relative to the middle heating layer 4. The number of the side heating layers 5 on any side of the middle heating layer 4 of the substrate 1 is the same, and the pore diameters of the liquid suction holes 6 are symmetrically decreasingly distributed from the middle heating layer 4 towards both sides. During the heating and atomization process, the temperature at the middle position of the heating element 2 is the highest, and from the middle position to both sides, the temperature of the heating element 2 gradually decreases. Thus, the pore diameter distribution of the liquid suction holes 6 on the substrate 1 corresponds to the temperature distribution of the heating element 2, which is beneficial to improving the atomization efficiency.

[0061] In some embodiments, the pore diameter range of the first liquid suction holes 601 is 30-60um; the pore diameter range of the second liquid suction holes 602 is 3-30um.

[0062] Specifically, the middle heating layer 4 is provided with first liquid suction holes 601, and the pore diameters of the first liquid suction holes 601 tend to be the same. The pore diameter of the first liquid suction hole 601 can specifically be any one of 30um, 35um, 40um, 45um, 50um, 55um, 60um.

[0063] The side heating layer 5 is provided with second liquid suction holes 602, and the pore diameters of the second liquid suction holes 6 tend to be the same. The pore diameter of the second liquid suction hole 602 can specifically be any one of 3um, 5um, 10um, 15um, 20um, 25um, 30um.

[0064] In some embodiments, the length of the substrate 1 in the axial direction of the through hole 3 is D1, the length of the middle heating layer 4 in the axial direction of the through hole 3 is D2, and the value range of the ratio of D2 to D1 is 1 / 5-2 / 3.

[0065] Understandably, the length of the middle heating layer 4 is set accordingly according to the length of the base body 1, and an appropriate ratio range is taken to greatly improve the atomization efficiency.

[0066] Specifically, the length of the base body 1 in the axial direction ranges from 4 to 15 mm, and the length of the base body 1 in the axial direction can specifically be any one of 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm; the length of the middle heating layer 4 in the axial direction ranges from 2 to 10 mm, and the length of the middle heating layer 4 in the axial direction can specifically be any one of 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm.

[0067] In some other embodiments, the base body 1 has a cylindrical structure, and the outer diameter of the base body 1 ranges from 3 mm to 6 mm, and the outer diameter of the base body 1 can specifically be any one of 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm.

[0068] Referring to Figure 1 , understandably, the aperture size of the first liquid suction holes 601 distributed on the middle heating layer 4 is larger than the aperture size of the second liquid suction holes 602 distributed on the side heating layer 5. Then, the middle heating layer 4 can pass aerosol matrix particles with larger particle sizes, effectively improving the liquid suction rate. And because the heating temperature of the part of the heating element 2 located at the middle heating layer 4 is higher, the atomization rate of the atomization core assembly 100 at the middle heating layer 4 is faster. At the same time, the concentration of the aerosol matrix at the middle heating layer 4 in the atomizer is lower. Then, the aerosol matrix stored in the atomizer will flow from the side heating layer 5 to the middle heating layer 4, which can further improve the atomization efficiency.

[0069] In some embodiments, referring to Figure 1 , the porosity of the middle heating layer 4 ranges from 30% to 80%, and the porosity of the middle heating layer 4 can specifically be any one of 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%.

[0070] The porosity of the side heating layer 5 ranges from 10% to 50%, and the porosity of the side heating layer 5 can specifically be any one of 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%.

[0071] The porosity of the middle heating layer 4 is greater than that of the side heating layer 5, so that the liquid absorption rate of the middle heating layer 4 is higher than that of the side heating layer 5; moreover, since the side heating layer 5 has a smaller porosity, the structural strength of the substrate 1 at the side heating layer 5 is greater than that at the middle heating layer 4, which is beneficial to maintaining the good structural strength of the substrate 1.

[0072] The atomizing core assembly 100 of the present application is a ceramic core atomizing core, and the substrate 1 is made and formed by using ceramic slurry. Exemplarily, the middle heating layer 4 and the side heating layer 5 can be of an integral structure; specifically, the middle heating layer 4 and the side heating layer 5 are integrally processed and formed in a mold without secondary assembly.

[0073] Alternatively, the middle heating layer 4 and the side heating layer 5 can be of a split structure. The middle heating layer 4 and the side heating layer 5 are respectively fabricated in advance, and then the side heating layer 5 is connected to the middle heating layer 4, such as by bonding, hot melt connection, etc.

[0074] Reference Figure 3 、 Figure 4 , it can be understood that the heating element 2 can be a nautilus heating wire, a mesh metal net (Mesh heating net), a metal sheet, etc.; the material of the heating element 2 can be an alloy formed by combining one or more of copper, iron, nickel, chromium, titanium, and aluminum; the heating element 2 is tightly connected to the inner wall surface of the substrate 1.

[0075] Reference Figure 2 、 Figure 3 , in some embodiments, the heating element 2 is a nautilus heating wire, and the heating element 2 surrounds the inner wall surface of the substrate 1; in the prior art, in order to make the heating element 2 have better heating efficiency, the wire diameter of the heating element 2 located on the middle heating layer 4 is set to be smaller than that of the heating element 2 located on the side heating layer 5; then when an electric current flows through the heating element 2, the heating element 2 heats up faster and has a higher heating temperature at the middle heating layer 4, and can better heat and atomize the aerosol. Then, the pore size distribution and porosity distribution of the liquid absorption holes 6 on the substrate 1 are set to match the temperature distribution of the heating element 2. The larger the pore size of the liquid absorption holes 6 and the higher the porosity of the substrate 1 at the position where the temperature is higher, so that the liquid guiding rate can be effectively increased and the atomization efficiency can be improved.

[0076] In some embodiments, the present application also provides an atomizer (not shown), including a main body and the atomizing core assembly 100. An aerosol matrix is stored in the main body. It can be understood that a liquid storage cavity for storing the aerosol matrix is formed in the main body, the atomizing core assembly 100 is arranged in the liquid storage cavity, the substrate 1 transports the aerosol matrix from the outside to the inside to the heating element 2, and the heating element 2 heats and atomizes the aerosol matrix to generate an atomized gas for the user to inhale.

[0077] In some embodiments, the present application further provides an electronic atomization device (not shown), including an atomizer and a power supply component. Referring to Figure 1 , the heating element 2 has electrode leads 7 extending outside the substrate 1, and the power supply component has a battery electrically connected to the electrode leads 7. The battery is used to supply power to the heating element 2 so that the heating element 2 can heat and atomize the aerosol matrix in real time.

[0078] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An atomizer core assembly, characterized in that: include: A substrate, the substrate comprising a middle heating layer and at least one side heating layer respectively arranged on two opposite sides of the middle heating layer, wherein the middle heating layer and each side heating layer are provided with through holes; A heating element, the heating element being placed in the through hole; Among them, the middle heating layer is also provided with a plurality of first liquid absorption holes connected to the outside, and the side heating layer is provided with a plurality of second liquid absorption holes connected to the outside, and the aperture of any first liquid absorption hole is larger than the aperture of any second liquid absorption hole.

2. The atomizer core assembly according to claim 1, characterized in that: The apertures of the first liquid-absorbing holes are equal; or, From the geometric center of the intermediate heating layer to the side end of the intermediate heating layer, the aperture of each of the first liquid absorption holes gradually decreases.

3. The atomizer core assembly according to claim 1, characterized in that: On the same side heat-generating layer, the second liquid-absorbing holes have the same aperture; or, In the direction from the end close to the middle heating layer to the end far away from the middle heating layer on the same side heating layer, the aperture of each of the second liquid absorption holes gradually decreases.

4. The atomizer core assembly according to any one of claims 1 to 3, characterized in that: The porosity of the middle heat-generating layer is greater than the porosity of any of the side heat-generating layers; Furthermore, in the direction from the middle heat-generating layer toward the side heat-generating layers on either side, the porosity of each of the side heat-generating layers located on the same side of the middle heat-generating layer tends to decrease successively.

5. The atomizer core assembly according to any one of claims 1 to 3, characterized in that: There are two side heating layers, which are respectively formed on opposite sides of the middle heating layer; and the two side heating layers are symmetrically arranged relative to the middle heating layer; when the apertures of the first liquid absorption holes are equal, the aperture range of the first liquid absorption holes is 30-60um; when the apertures of the second liquid absorption holes are equal, the aperture range of the second liquid absorption holes is 3-30um.

6. The atomizer core assembly according to claim 1, characterized in that: The length of the substrate in the axial direction of the through hole is D1, the length of the intermediate heating layer in the axial direction of the through hole is D2, and the ratio of D2 to D1 ranges from 1 / 5 to 2 / 3.

7. The atomizer core assembly according to claim 4, characterized in that: The porosity of the middle heating layer ranges from 30% to 80%; and / or the porosity of the side heating layer ranges from 10% to 50%.

8. The atomizer core assembly according to claim 1, characterized in that: The middle heating layer and the side heating layer are an integrated structure; or, the middle heating layer and the side heating layer are a separate structure.

9. An atomizer, characterized in that: It comprises a main body storing an aerosol matrix and an atomizer core assembly according to any one of claims 1 to 8 arranged in the main body, wherein the atomizer core assembly is used for heating and atomizing the aerosol matrix.

10. An electronic atomization device, characterized in that: It comprises a power supply component and the atomizer as claimed in claim 9, wherein the power supply component is used to supply power to the heating element of the atomization core component of the atomizer.

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