Atomization core, atomizer, and electronic atomization device

Abstract

The present application relates to the technical field of atomization, and discloses an atomization core, an atomizer, and an electronic atomization device, which are used for heating and atomizing an aerosol-generating substrate. The atomization core comprises: a base body having an atomization surface and a liquid adsorption surface arranged opposite to each other, the base body being provided with a plurality of grooves, a plurality of first protruding strips and a plurality of micropores; the grooves and the first protruding strips are formed on the atomization surface, the plurality of grooves are parallel to each other and arranged at intervals, and one first protruding strip is formed between two adjacent grooves; and the micropores run through the atomization surface and the liquid adsorption surface, each first protruding strip is correspondingly provided with a micropore, and the micropore is communicated with two adjacent grooves. In the atomization core, the atomizer, and the electronic atomization device of the present application, the thickness of a liquid film on the atomization surface of the atomization core is increased, and the liquid conducting capability is improved.

Description

Atomization core, atomizer and electronic atomization device

[0001] Cross-reference to related applications

[0002] The present application claims priority to the Chinese patent application No. 202421980967.6, filed on August 15, 2024, and entitled "Atomization core, atomizer and electronic atomization device", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the field of atomization technology, in particular to an atomization core, an atomizer and an electronic atomization device. BACKGROUND

[0004] The atomization core is the core component of the electronic atomization device, and its characteristics determine the atomization effect and use experience of the electronic atomization device.

[0005] With the advancement of technology, users have increasingly high requirements for the atomization effect of the electronic atomization device. In order to meet the needs of users, an atomization core with a straight hole base is provided. However, the liquid film thickness of the atomization surface of the atomization core with the straight hole base is relatively thin, and the liquid guiding ability of the straight hole base is poor, thereby easily causing dry burning, unsatisfactory atomization effect and other problems. SUMMARY

[0006] The present application aims to overcome the defects of the atomization core in the related art, such as the thin liquid film thickness of the atomization surface and poor liquid guiding ability, thereby providing an atomization core, an atomizer and an electronic atomization device.

[0007] In a first aspect, the present application provides an atomization core applied to an electronic atomization device and used for heating an aerosol generating substrate. The atomization core comprises: a base having an atomization face and a liquid absorption face oppositely arranged, and a plurality of grooves, a plurality of first protrusions and a plurality of micro-holes arranged on the base; the grooves and the first protrusions are formed on the atomization face, the plurality of grooves are arranged in parallel and at intervals, and a first protrusion is formed between two adjacent grooves; the micro-holes penetrate the atomization face and the liquid absorption face, and each first protrusion is correspondingly provided with a micro-hole, and the micro-hole communicates two adjacent grooves.

[0008] In an optional implementation, in a first direction, the micro-hole penetrates the first protrusion; in a second direction, a port size of the micro-hole close to the atomization face is greater than a setting size of the first protrusion, and the port of the micro-hole close to the atomization face communicates two adjacent grooves; the first direction is a direction from the atomization face to the liquid absorption face; and the second direction is an interval direction of the plurality of grooves.

[0009] In an optional embodiment, the micropores are arranged along a first direction; and / or, in the first direction, the micropores have the same cross-sectional dimension; and / or, in the first direction, the micropores have a circular cross-sectional shape; and the first direction is perpendicular to the atomization surface and the liquid absorption surface.

[0010] In an optional embodiment, in a third direction, a plurality of micropores are arranged on the first protrusion at intervals; and the third direction is the extension direction of the first protrusion.

[0011] In an optional embodiment, a second protrusion is arranged on the substrate, the second protrusion is formed on the periphery of the plurality of grooves; and at least part of the micropores are arranged correspondingly to the second protrusion, and the micropores are in communication with adjacent grooves.

[0012] In an optional embodiment, the plurality of micropores are arranged in an array, and in a second direction, adjacent micropores are arranged opposite to each other or staggered; and the second direction is the interval direction of the plurality of grooves.

[0013] In an optional embodiment, the substrate is a dense substrate.

[0014] In an optional embodiment, the atomization core further comprises a heating layer, the heating layer is arranged on the atomization surface, the heating layer is used for heating the aerosol generating substrate, and the heating layer allows the corresponding micropores to be exposed.

[0015] In an optional embodiment, the substrate is a dense substrate; the grooves have a bottom wall, the micropores are located on one side of the bottom wall, and the heating layer is a resistance heating film arranged on the bottom wall of the grooves.

[0016] In an optional embodiment, the atomization core further comprises a positive electrode and a negative electrode, and two ends of the heating layer are electrically connected to the positive electrode and the negative electrode, respectively.

[0017] In a second aspect, the present application further provides an atomizer, comprising: a liquid storage cavity for storing an aerosol generating substrate; and an atomization core as described above, the atomization core being in fluid communication with the liquid storage cavity.

[0018] In a third aspect, the present application further provides an electronic atomization device, comprising: an atomizer as described above; and a main machine for providing electric energy for the operation of the atomizer.

[0019] By means of the technical scheme of the present application, the grooves and the first protrusions are formed on the atomization surface, the grooves are parallel to each other and are arranged at intervals, a first protrusion is formed between two adjacent grooves, the micro-holes penetrate the atomization surface and the liquid suction surface, and each first protrusion is provided with a micro-hole corresponding thereto, the micro-holes communicate with two adjacent grooves, and the grooves are communicated with each other through the micro-holes on the first protrusions. The grooves have the function of storing liquid, after the aerosol generating substrate is guided from the liquid suction surface to the atomization surface by the micro-holes, the aerosol generating substrate can flow into the grooves on the entire atomization surface and be stored in the grooves, thereby increasing the thickness of the liquid film on the atomization surface of the atomization core. Moreover, the grooves are communicated with each other through the micro-holes, the capillary force and the surface tension of the grooves are enhanced, and the liquid guiding capacity of the substrate is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the specific embodiments of the present application or the prior art, the drawings needed to be used in the description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Fig. 1 is a perspective view of a substrate according to an embodiment of the present application;

[0022] Fig. 2 is a partial enlarged view of A in Fig. 1;

[0023] Fig. 3 is a top view of Fig. 1;

[0024] Fig. 4 is a top view of an atomization core according to an embodiment of the present application;

[0025] Fig. 5 is a perspective view of another substrate according to an embodiment of the present application;

[0026] Fig. 6 is a partial enlarged view of B in Fig. 5;

[0027] Fig. 7 is a top view of Fig. 5;

[0028] Fig. 8 is a structural schematic view of a micro-hole according to an embodiment of the present application;

[0029] Fig. 9 is a structural schematic view of another micro-hole according to an embodiment of the present application;

[0030] Fig. 10 is a structural schematic view of another micro-hole according to an embodiment of the present application;

[0031] Fig. 11 is a structural schematic view of another micro-hole according to an embodiment of the present application.

[0032] Explanation of reference signs: 1, base; 10, atomization surface; 20, liquid absorption surface; 31, groove; 311, bottom wall; 312, side wall; 32, micropore; 33, first protrusion; 331, protrusion; 34, second protrusion; 341, first sub-protrusion; 342, second sub-protrusion; 2, heating layer; 3, positive electrode; 4, negative electrode; Z, first direction; Y, second direction; X, third direction. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0034] The following will be combined with FIGS. 1 to 11 to describe the embodiments of the present application.

[0035] According to the embodiments of the present application, an electronic atomization device is provided, which can be used for atomization of an aerosol generating substrate. Specifically, the electronic atomization device comprises an atomizer and a main machine which are electrically connected to each other.

[0036] The atomizer is used for storing the aerosol generating substrate and atomizing the aerosol generating substrate to form an aerosol for a user to smoke. The atomizer can be used in different fields, such as medical treatment, beauty, and leisure smoking. In a specific embodiment, the atomizer can be used in an electronic aerosolization device for atomizing the aerosol generating substrate and generating an aerosol for a smoker to smoke. The following embodiments are all taken as an example of leisure smoking.

[0037] The specific structure and function of the atomizer can refer to the specific structure and function of the atomizer involved in the following embodiments, and the same or similar technical effects can be achieved, which will not be described here.

[0038] The main machine comprises a battery and a controller. The battery is used to provide electric energy for the working of the atomizer, so that the atomizer can atomize the aerosol generating substrate to form an aerosol; the controller is used to control the working of the atomizer. The main machine further comprises a battery holder, an airflow sensor, and other elements.

[0039] The atomizer and the main machine can be integrally arranged or detachably connected, which can be designed according to specific needs.

[0040] Optionally, the atomizer comprises a housing and an atomizing core arranged in the housing, a liquid storage cavity is formed in the housing for storing the aerosol generating substrate. The atomizing core is arranged in fluid communication with the liquid storage cavity, and the atomizing core is electrically connected with the main machine to atomize the aerosol generating substrate to generate aerosol.

[0041] Specifically, the atomizing core comprises a substrate 1 and a heating structure arranged on the substrate 1. The substrate 1 is in fluid communication with the liquid storage cavity and is used to introduce the aerosol generating substrate. The heating structure is electrically connected with the main machine and is used to heat and atomize the aerosol generating substrate introduced into the substrate 1.

[0042] In some embodiments, as shown in FIG. 1 or 5, the substrate 1 has an atomizing surface 10 and a liquid absorbing surface 20 arranged oppositely, and a plurality of grooves 31, a plurality of micropores 32 and a plurality of first protrusions 33 are arranged on the substrate 1. The plurality of grooves 31 and the plurality of first protrusions 33 are both formed on the atomizing surface 10, wherein the plurality of grooves 31 are arranged in parallel and spaced apart, and a first protrusion 33 is formed between any two adjacent grooves 31. The micropores 32 penetrate the atomizing surface 10 and the liquid absorbing surface 20, and each first protrusion 33 is provided with a micropore 32 corresponding thereto, that is, each micropore 32 is located between two adjacent grooves 31, and the micropore 32 communicates the two adjacent grooves 31. The plurality of grooves 31 on the atomizing surface 10 are connected to each other through the micropores on the plurality of first protrusions 33.

[0043] In this embodiment, the grooves 31 have a liquid storage function. After the aerosol generating substrate is introduced from the liquid absorbing surface 20 to the atomizing surface 10 by the micropores 32, the aerosol generating substrate can flow into the grooves 31 on the entire atomizing surface 10 and be stored in the grooves 31, thereby increasing the liquid film thickness of the atomizing surface 10 of the atomizing core. Moreover, the grooves 31 are connected to each other through the micropores 32, thereby enhancing the capillary force and surface tension of the grooves 31, and further enhancing the liquid introduction capacity of the substrate 1. Therefore, the atomizing core of the present application improves the liquid film thickness and liquid introduction capacity of the atomizing surface 10, so that it is easier to produce large-particle aerosol, improve the taste, and avoid dry burning and other problems.

[0044] For ease of description, the direction from the atomizing surface 10 to the liquid absorbing surface 20 is defined as a first direction Z, the direction of the spacing of the plurality of grooves 31, that is, the width direction of the grooves 31 is defined as a second direction Y, and the extension direction of the grooves 31, that is, the length direction is defined as a third direction X. The first direction Z, the second direction Y and the third direction X are arranged at an angle with respect to each other, and in some embodiments, the first direction Z, the second direction Y and the third direction X are perpendicular to each other.

[0045] In some embodiments, the width of the groove 31 ranges from 10 to 200 microns. If the width of the groove 31 is greater than 200 microns, the capillary force is weak, and the liquid guiding and liquid limiting capabilities are weakened. If the width of the groove 31 is less than 10 microns, the liquid storage capacity is small, the aerosol generating substrate flow resistance is large, and the flow is slow.

[0046] In some embodiments, the depth of the groove 31 ranges from 10 to 300 microns, which is the setting size of the groove 31 in the first direction Z. If the depth of the groove 31 is greater than 300 microns, the liquid film thickness of the aerosol generating substrate is too thick, the temperature rises slowly, and it is difficult or even impossible to explode the liquid, making it difficult to generate large-particle aerosols. If the depth of the groove 31 is less than 10 microns, the capillary force is small, and the liquid guiding capability is weakened.

[0047] Understandably, a thinner liquid film has less liquid explosion and small particle size, and a thicker liquid film has large liquid explosion and large particle size. In this scheme, the depth of the groove 31 can limit the thickness of the liquid film, and the length and width of the groove 31 can limit the liquid storage capacity of the liquid film. By adjusting the setting size of the groove 31, the number and size of large-particle aerosols can be adjusted, thereby improving the taste and achieving the desired atomization effect.

[0048] In addition, the shape of the groove 31 is not limited in this application. The groove 31 can be an arc-shaped groove, a trapezoidal groove, a right-angled groove, or other shapes.

[0049] It should be noted that the setting method of the groove 31 on the atomization surface 10 is not limited in this scheme, as long as the function of increasing the liquid film thickness and strengthening the liquid guiding capability is achieved. For example, the groove 31 can be integrally formed on the base body 1, such as being formed by subtractive process on the atomization surface 10, that is, the groove opening plane of the groove 31 is the atomization surface 10. For example, a laminated structure can be added to the atomization surface 10, and the laminated structure and the atomization surface 10 together form the groove 31, that is, the bottom wall 311 of the groove 31 is located on the atomization surface 10.

[0050] Optionally, in some embodiments, the plurality of first protrusions 33 are arranged in parallel and spaced apart in the second direction Y, and each first protrusion 33 is arranged in parallel and adjacent to the groove 31. Correspondingly, the above-mentioned micropores 32 are arranged corresponding to the first protrusions 33, and in the first direction Z, the micropores 32 all penetrate the first protrusions 33. In the second direction Y, the size of the port of the micropore 32 close to the atomization surface 10 is greater than the setting size of the first protrusion 33, and the port of the micropore 32 close to the atomization surface 10 is connected to the adjacent two grooves 31.

[0051] The first protrusions 33 extend along the third direction X, i.e., the setting dimension of the first protrusions 33 in the third direction X is the length dimension of the first protrusions 33. The first protrusions 33 are arranged at intervals along the second direction Y, i.e., the setting dimension of the first protrusions 33 in the second direction Y is the width dimension of the first protrusions 33.

[0052] It should be noted that the shape of the micropores 32 is not limited in the present application. As shown in FIGS. 8-11, which are partial structural sectional views of the substrate 1 in the first direction Z, the micropores 32 can be configured as tapered holes, straight holes, inclined holes, or other shapes. In addition, the cross-sectional shape of the micropores 32 in the first direction Z can be circular, elliptical, square, triangular, polygonal, or other shapes.

[0053] In some embodiments, the micropores 32 extend along the first direction Z, and the first direction Z is perpendicular to the atomization face 10 and the liquid suction face 20. As shown in FIGS. 8-10, the micropores 32 are right tapered holes, inverted tapered holes, or straight holes, and the axis of the micropores 32 extends along the first direction Z, i.e., the axis of the micropores 32 is perpendicular to the atomization face 10 and the liquid suction face 20.

[0054] In some embodiments, the extension direction of the micropores 32 forms an angle with the first direction Z, and the first direction Z is perpendicular to the atomization face 10 and the liquid suction face 20. As shown in FIG. 11, the micropores 32 are inclined holes, and the axis of the micropores 32 forms an angle with the first direction Z.

[0055] In some embodiments, the cross-sectional dimension of the micropores 32 in the first direction Z can be the same, as shown in FIGS. 10 and 11.

[0056] In some embodiments, the cross-sectional dimension of the micropores 32 in the first direction Z can also be different, as shown in FIGS. 8 and 9.

[0057] For example, as shown in FIG. 8, the micropores 32 are configured as right tapered holes, and the port size of the end close to the atomization face 10 is smaller than the port size of the end close to the liquid suction face 20. For example, as shown in FIG. 9, the micropores 32 are configured as inverted tapered holes, and the port size of the end close to the atomization face 10 is larger than the port size of the end close to the liquid suction face 20. For example, as shown in FIG. 10, the micropores 32 are configured as straight holes, i.e., the micropores 32 extend along the first direction Z, and the port size of the end close to the atomization face 10 is equal to the port size of the end close to the liquid suction face 20. For example, as shown in FIG. 11, the micropores 32 are configured as inclined holes, i.e., the extension direction of the micropores 32 forms an angle with the first direction Z, and the port size of the end close to the atomization face 10 is equal to the port size of the end close to the liquid suction face 20.

[0058] Exemplarily, the cross-sectional shape of the micropore 32 in the first direction Z is circular, the port size of the micropore 32 close to the atomization surface 10 is the aperture of the micropore 32 close to the atomization surface 10, and the port size of the micropore 32 close to the liquid suction surface 20 is the aperture of the micropore 32 close to the liquid suction surface 20.

[0059] In some embodiments, the aperture of the micropore 32 ranges from 5 to 100 μm, the depth of the micropore 32 ranges from 0.3 to 3 mm, and the interstitial distance of the micropore 32 ranges from 5 to 200 μm. The setting size of the first protrusion 33 in the second direction Y, i.e., the width d of the first protrusion 33, satisfies 1 μm≤d≤the aperture of the micropore 32 away from the liquid suction surface 20.

[0060] Optionally, in some embodiments, a plurality of micropores 32 are arranged on the first protrusion 33 in the third direction X. The third direction X is the extension direction of the groove 31, i.e., the extension direction of the first protrusion 33. As shown in FIGS. 2 or 6, a plurality of micropores 32 are arranged on each first protrusion 33, and the micropore 32 penetrates the first protrusion 33 in the first direction Z, and in the second direction Y, the port size of the micropore 32 close to the atomization surface 10 is greater than the width size of the first protrusion 33, thereby separating the first protrusion 33 into a plurality of protrusions 331. In this way, the micropore 32 is located on one side of the groove 31, the inner wall of the micropore 32 is in communication with the side wall 312 of the groove 31, and a plurality of through channels are formed in the second direction Y; and the micropore 32 is arranged at a distance from the protrusion 331, and there is a spatial geometric fragmentation effect between the micropore 32 and the protrusion 331 on the atomization surface 10, which enhances the liquid suction capacity of the groove 31 and avoids problems such as dry burning.

[0061] The present application does not make specific limitations on the number and arrangement of the micropores 32, as long as the liquid supply demand is met. The number of micropores 32 can be adaptively adjusted according to the setting size of the base body 1 and the liquid supply demand. The arrangement of the micropores 32 can be uniform or non-uniform, such as simple cubic arrangement, face-centered cubic arrangement, closest packing arrangement, or other arrangement.

[0062] Exemplarily, as shown in FIGS. 1-4, a plurality of micropores 32 are arranged in an array, and adjacent micropores 32 are arranged opposite to each other. Specifically, the micropores 32 include a plurality of micropore columns arranged side by side in the second direction Y, and the micropores 32 in each micropore column are uniformly and spacedly arranged in the third direction X, and in adjacent micropore columns, the micropores 32 are arranged opposite to each other.

[0063] Exemplarily, as shown in FIGS. 5-7, the plurality of micro-holes 32 are arranged in an array, and adjacent micro-holes 32 are staggered. Specifically, the micro-holes 32 include a plurality of micro-hole columns arranged side by side in the second direction Y, and the plurality of micro-holes 32 in each micro-hole column are uniformly spaced apart in the third direction X, and in adjacent micro-hole columns, each micro-hole 32 is staggered with each other.

[0064] Alternatively, in some embodiments not shown, the micro-holes 32 can be irregularly arranged, and the number of micro-holes 32 arranged on each first ridge 33 can be the same or different.

[0065] Optionally, in some embodiments, the base body 1 is provided with a second ridge 34 formed on the periphery of the plurality of grooves 31. At least part of the micro-holes 32 are arranged corresponding to the second ridge 34 and communicate with adjacent grooves 31 to further enhance the liquid supply capacity.

[0066] Specifically, in the first direction Z, the micro-holes 32 penetrate the second ridge 34; in the second direction Y, the micro-holes 32 communicate with the side wall 312 of the adjacent groove 31, and the micro-holes 32 do not penetrate the second ridge 34 to limit the aerosol generating substrate within the groove 31 of the atomization surface 10. The second ridge 34 can be provided with a plurality of micro-holes 32 at intervals, which can be arranged at intervals; and the micro-holes 32 on the second ridge 34 can be arranged opposite or staggered with the micro-holes 32 on the first ridge 33.

[0067] Exemplarily, as shown in FIG. 1 or 5, the base body 1 is configured as a cube, and the first direction Z, the second direction Y and the third direction X are perpendicular to each other. The second ridge 34 includes two first sub-ridges 341 and two second sub-ridges 342. The first sub-ridge 341 extends along the third direction X, and the two first sub-ridges 341 are arranged parallel to each other at the two ends of the atomization surface 10 along the second direction Y, that is, the first sub-ridge 341 is arranged parallel to the groove 31 and the first ridge 33; the second sub-ridge 342 extends along the second direction Y, and the two second sub-ridges 342 are arranged parallel to each other at the two ends of the atomization surface 10 along the third direction X, that is, the second sub-ridge 342 is arranged perpendicular to the groove 31 and the first ridge 33.

[0068] In some embodiments, a plurality of micro-holes 32 are arranged at intervals on the first sub-ridge 341; or in some embodiments, a plurality of micro-holes 32 are arranged on the second sub-ridge 342; or in some embodiments, a plurality of micro-holes 32 are arranged on both the first sub-ridge 341 and the second sub-ridge 342.

[0069] In some embodiments, the recess 31 comprises the bottom wall 311 and the side wall 312 surrounding the bottom wall 311, and the micro-holes 32 are located on one side of the bottom wall 311, and the micro-holes 32 are communicated with the side wall 312 between two adjacent recesses 31. That is, in this embodiment, the bottom wall 311 is not provided with micro-holes. Optionally, the atomization core comprises the heating structure, the heating structure comprises the heating layer 2, the positive electrode 3 and the negative electrode 4, the heating layer 2 is arranged on the atomization surface 10, the heating layer 2 is used for heating the aerosol generating substrate, and the heating layer 2 allows the corresponding micro-holes 32 to be exposed. The two ends of the heating layer 2 are electrically connected with the positive electrode 3 and the negative electrode 4 respectively, and the positive electrode 3 is electrically connected with the positive electrode of the battery, and the negative electrode 4 is electrically connected with the negative electrode of the battery.

[0070] In some embodiments, the recess 31 comprises the bottom wall 311 and the side wall 312 surrounding the bottom wall 311, and the micro-holes 32 are located on one side of the bottom wall 311, and the micro-holes 32 are communicated with the side wall 312 between two adjacent recesses 31. That is, in this embodiment, the bottom wall 311 is not provided with micro-holes. Optionally, the atomization core comprises the heating structure, the heating structure comprises the heating layer 2, the positive electrode 3 and the negative electrode 4, the heating layer 2 is arranged on the atomization surface 10, the heating layer 2 is used for heating the aerosol generating substrate, and the heating layer 2 allows the corresponding micro-holes 32 to be exposed. The two ends of the heating layer 2 are electrically connected with the positive electrode 3 and the negative electrode 4 respectively, and the positive electrode 3 is electrically connected with the positive electrode of the battery, and the negative electrode 4 is electrically connected with the negative electrode of the battery.

[0071] In some embodiments, as shown in FIG. 4, the heating layer 2 is arranged on the bottom wall 311 of the recess 31, and the micro-holes 32 are located on one side of the bottom wall 311, that is, the bottom wall 311 is not provided with micro-holes 32. Specifically, the heating layer 2 comprises a plurality of heating portions, and the plurality of heating portions are arranged one by one on the bottom wall 311 of the plurality of recesses 31, and the two ends of each heating portion are electrically connected with the positive electrode 3 and the negative electrode 4 respectively. In this way, each heating portion of the heating layer 2 is arranged staggered with the micro-holes 32, the uniformity of heating is good, and the atomization effect is good.

[0072] Optionally, the positive electrode 3 and the negative electrode 4 are arranged on the two first sub-ridges 341 or the second sub-ridges 342 respectively, as shown in FIG. 4, the recess 31 extends along the third direction X, correspondingly, each heating portion of the heating layer 2 extends along the third direction X, and the positive electrode 3 and the negative electrode 4 are located at the two ends of the heating layer 2 in the third direction X, that is, the positive electrode 3 and the negative electrode 4 are arranged on the two second sub-ridges 342 respectively.

[0073] In some embodiments, the setting size of the heating layer 2 in the first direction Z, that is, the thickness range is 1-10 μm. The heating layer 2 can be a resistance heating film. The material of the resistance heating film can be stainless steel, iron-chromium-aluminum, platinum, gold and other metal materials and alloy materials that can be used for heating. Exemplarily, the resistance heating film can be formed by a gas phase deposition process such as magnetron sputtering, vacuum evaporation, plasma deposition, atomic layer deposition, etc., or can be formed by an electroplating process.

[0074] In some embodiments, the heat-generating layer 2 is an electrically resistive heating film arranged on the bottom wall of the groove, and the two ends of the electrically resistive heating film are electrically connected with the positive electrode 3 and the negative electrode 4, respectively. In this way, the electrically resistive heating film extends between the positive electrode 3 and the negative electrode 4, and no hole or other blocking structure is arranged on the electrically resistive heating film, so that the heat-generating resistive material in the electrically resistive heating film is uniformly distributed, and the heating is more uniform, thereby improving the atomization effect.

[0075] In some embodiments, the substrate 1 can be a dense substrate. The dense substrate refers to the substrate 1 with a porosity of less than 10% except for the micropores 32.

[0076] In addition, the material and shape of the substrate 1 are not specifically limited, as long as they can match the shell. The material of the substrate 1 includes but is not limited to glass, quartz, silicon, ceramic, and other micro-nano process substrates, and the shape of the substrate 1 includes but is not limited to a cube, a block, a column, a plate, or other irregular shapes.

[0077] The technical features of the above-described embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as falling within the scope of the present disclosure.

[0078] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes should fall within the scope defined by the appended claims.

Claims

1. An atomizer wick for use in an electronic atomization device for heating an atomization aerosol-generating substrate, the atomizer wick comprising: The atomization core comprises a base body (1) having an atomization surface (10) and a liquid absorption surface (20) arranged oppositely, and a plurality of grooves (31), a plurality of first protrusions (33) and a plurality of micro-holes (32) are arranged on the base body (1); the grooves (31) and the first protrusions (33) are formed on the atomization surface (10), the plurality of grooves (31) are arranged in parallel and spaced apart, and a first protrusion (33) is formed between two adjacent grooves (31); the micro-holes (32) penetrate the atomization surface (10) and the liquid absorption surface (20), and each first protrusion (33) is correspondingly provided with a micro-hole (32), and the micro-hole (32) communicates two adjacent grooves (31). In a first direction, the micro-hole (32) penetrates the first protrusion (33); in a second direction, the size of the port of the micro-hole (32) close to the atomization surface (10) is greater than the size of the first protrusion (33), and the port of the micro-hole (32) close to the atomization surface (10) communicates two adjacent grooves (31); 2. The atomizer core of claim 1, wherein, The first direction is from the atomization surface (10) to the liquid absorption surface (20); and the second direction is the spacing direction of the plurality of grooves (31). The micro-hole (32) is arranged in extension along the first direction; and / or, 3. The atomizer core of claim 2, wherein, In the first direction, the cross-sectional size of the micro-hole (32) is the same; and / or, In the first direction, the cross-sectional shape of the micro-hole (32) is circular; The first direction is perpendicular to the atomization surface (10) and the liquid absorption surface (20). In a third direction, a plurality of micro-holes (32) are arranged in space on the first protrusion (33); 4. The atomizer core of claim 1, wherein, The third direction is the extension direction of the first protrusion (33). The base body (1) is provided with a second protrusion (34), and the second protrusion (34) is formed on the periphery of the plurality of grooves (31); at least part of the micro-holes (32) are correspondingly arranged with the second protrusion (34), and the micro-holes (32) communicate with adjacent grooves (31).

5. The atomizer core of claim 1, wherein, The plurality of micro-holes (32) are arranged in an array, and in a second direction, adjacent micro-holes (32) are arranged face to face or staggered; 6. The atomizer core of claim 1, wherein, The second direction is the spacing direction of the plurality of grooves (31). The base body (1) is a dense base body.

7. The atomizer wick of any of claims 1-6, wherein, The atomization core further comprises a heating layer (2), the heating layer (2) is arranged on the atomization surface (10), the heating layer (2) is used for heating the aerosol generating substrate, and the heating layer (2) allows the corresponding micro-hole (32) to be exposed.

8. The atomizer wick of any of claims 1-6, wherein, The base body (1) is a dense base body; 9. The atomizer core of claim 8, wherein, The groove (31) has a bottom wall (311), and the micro-hole (32) is located on one side of the bottom wall (311); the heating layer (2) is a resistance heating film, and the resistance heating film is arranged on the bottom wall (311) of the groove (31). The atomization core further comprises a positive electrode (3) and a negative electrode (4), and the two ends of the heating layer (2) are respectively electrically connected with the positive electrode (3) and the negative electrode (4).

10. The atomizer core of claim 8, wherein, The atomization core comprises a base body (1) having an atomization surface (10) and a liquid absorption surface (20) arranged oppositely, and a plurality of grooves (31), a plurality of first protrusions (33) and a plurality of micro-holes (32) are arranged on the base body (1); the grooves (31) and the first protrusions (33) are formed on the atomization surface (10), the plurality of grooves (31) are arranged in parallel and spaced apart, and a first protrusion (33) is formed between two adjacent grooves (31); the micro-holes (32) penetrate the atomization surface (10) and the liquid absorption surface (20), and each first protrusion (33) is correspondingly provided with a micro-hole (32), and the micro-hole (32) communicates two adjacent grooves (31).

11. An atomiser characterised in that, ​ a reservoir for storing an aerosol generating substrate; The atomizing core according to any one of claims 1-10, in fluid communication with the reservoir.

12. An electronic atomizing device, characterized by, Comprising: The atomizer according to claim 11. A host for providing electrical energy for the atomizer to work.

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