Atomization core and atomizer

Abstract

The present application provides an atomization core and an atomizer. The atomization core comprises a porous substrate and a heating element. The porous substrate has a first surface and a second surface adjacent to each other; a liquid feed groove is formed on the first surface of the porous substrate; the heating element is arranged on the second surface of the porous substrate, and is used for atomizing an atomization medium flowing to the second surface through the liquid feed groove so as to form an aerosol. The aerosol formed by the atomization core by atomization on the second surface of the porous substrate can flow out directly without passing through other surfaces of the porous substrate different from the second surface, shortening the air outlet path of the aerosol, reducing the complexity of the airflow channel, and avoiding condensation of the aerosol due to contact with other surfaces of the porous substrate; and less aerosol condenses on the inner wall surface of the airflow channel, effectively increasing the vapor output of the aerosol, improving the user experience.

Description

Atomizer core and atomizer

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on Chinese patent application 2023115151094 filed on November 13, 2023, and all of its contents are incorporated herein by reference.

Technical field

[0003] The present invention relates to the technical field of electronic atomization, and in particular to an atomizer core and an atomizer. [Background Technology]

[0004] Currently, a nebulizer includes an atomizing core for atomizing an atomizing medium to form an aerosol. However, the amount of aerosol formed by atomization in the existing nebulizer and flowing out of the air flow channel is relatively small.

[0005] [Summary of the invention]

[0006] The main technical problem solved by the present application is the relatively small amount of aerosol discharged from the air flow channel.

[0007] In order to solve the above technical problems, a technical solution adopted in this application is:

[0008] An atomizing core is provided, comprising: a porous substrate having a first surface and a second surface adjacent to each other, wherein a lower liquid tank is provided on the first surface of the porous substrate; and a heating element is provided on the second surface of the porous substrate, for atomizing an atomizing medium flowing through the lower liquid tank to the second surface to form an aerosol.

[0009] In one embodiment, the porous matrix further has a third surface arranged opposite to the first surface along a first direction, and a fourth surface arranged opposite to the second surface along a second direction, and the second direction is not parallel to the first direction; the atomizer core further includes: a soldering pad, which is provided on the second surface of the porous matrix and is electrically connected to the heating element; a lead, a first end of the lead is electrically connected to the soldering pad, and a second end of the lead extends to one side of the third surface of the porous matrix.

[0010] In one embodiment, a shunting groove is formed on the third surface of the porous matrix, and the second end of the lead passes through a side wall of the shunting groove close to the second surface along the second direction and extends into the shunting groove.

[0011] In one embodiment, a avoidance groove is provided on the third surface of the porous matrix, and the second end of the lead passes through the side wall of the avoidance groove close to the second surface along the second direction and extends into the avoidance groove, and then bends and extends to the third surface of the porous matrix.

[0012] In one embodiment, the second end of the lead extends along the first direction from the second surface of the porous matrix and is wound around to the third surface of the porous matrix.

[0013] In one embodiment, the pad extends along the first direction, and the pad is at least partially arranged at a position close to the third surface to the second surface; wherein the second direction is perpendicular to the first direction; the first end of the lead is in contact with and electrically connected to an end of the pad close to the third surface, or the first end of the lead is in contact with and connected to the middle position or near the middle position of the pad along the first direction.

[0014] In one embodiment, the maximum dimension of the porous matrix in the first direction is greater than the maximum dimension of the porous matrix in the second direction.

[0015] In one embodiment, a plurality of liquid conducting grooves are provided on the second surface of the porous matrix, and the plurality of liquid conducting grooves are distributed on one side or both sides of the heating element; the plurality of liquid conducting grooves located on the same side of the heating element are spaced apart along the extension direction of the heating element.

[0016] In one embodiment, among the plurality of liquid-conducting grooves located on the same side of the heating element, every two adjacent liquid-conducting grooves are connected through a buried via.

[0017] In one embodiment, a side wall of the lower liquid tank facing away from the second surface has an opening, or the side wall of the lower liquid tank facing away from the second surface has no side wall.

[0018] In order to solve the above technical problems, the second technical solution provided in this application is: to provide an atomizer, comprising: a shell, including an air flow channel and a liquid storage tank; an atomizer core, which is the atomizer core described above, is arranged in the shell and located at the bottom of the liquid storage tank; wherein, the lower liquid tank of the atomizer core is connected to the liquid storage tank, and the second surface of the porous matrix forms a partial side surface of the air flow channel.

[0019] In one embodiment, the air flow channel extends linearly from the bottom to the top of the atomizer, and the angle between the second surface of the porous matrix and the extension direction of the air flow channel is less than 45°.

[0020] Beneficial effects of the present application: Different from the prior art, the present application provides an atomizer core. The atomizer core includes: a porous substrate and a heating element. The porous substrate has a first surface and a second surface adjacent to each other; a lower liquid tank is provided on the first surface of the porous substrate; the heating element is provided on the second surface of the porous substrate, and is used to atomize the atomizing medium that flows through the lower liquid tank to the second surface to form an aerosol. By arranging the lower liquid tank and the heating element on two adjacent surfaces of the porous substrate, the aerosol formed by atomization on the second surface of the porous substrate can flow out directly without passing through other surfaces of the porous substrate different from the second surface, thereby shortening the aerosol outlet path, avoiding the condensation of the aerosol due to contact with other surfaces of the porous substrate, and affecting the amount of aerosol output, thereby effectively increasing the amount of aerosol output and improving the user experience.

Brief Description of the Drawings

[0021] FIG1 is a simplified structural diagram of an atomizer provided in an embodiment of the present application;

[0022] FIG2 is an overall schematic diagram of the atomizer core of Example 1 from a first viewing angle;

[0023] FIG3 is an overall schematic diagram of the atomizer core of Example 1 from a second viewing angle;

[0024] FIG4 is an overall schematic diagram of the atomizer core of Example 2;

[0025] FIG5 is a schematic structural diagram of the abutment between the atomizer core and the ejector pin according to the first embodiment;

[0026] FIG6 is an overall schematic diagram of the atomizer core of Example 3;

[0027] FIG7 is a schematic structural diagram of the atomizing core and the ejector pin shown in FIG6 ;

[0028] FIG8 is an overall schematic diagram of the atomizer core and the ejector pin abutting against each other in the first perspective of the fourth embodiment;

[0029] FIG9 is an overall schematic diagram of the atomizer core and the ejector pin in abutment with each other in a second viewing angle according to the fourth embodiment;

[0030] FIG10 is an overall schematic diagram of the atomizer core of Example 5;

[0031] FIG11 is a schematic diagram of the overall structure of an atomizer core provided in another embodiment of the present application.

[0032] Explanation of the accompanying reference numerals: 1-shell; 11-liquid storage tank; 12-air flow channel; 13-thimble; 2-atomizing core; 20-porous substrate; 201-first surface; 202-second surface; 203-third surface; 204-fourth surface; 21-lower liquid tank; 22-heating element; 23-soldering pad; 24-lead; 25-liquid guide groove; 26-avoidance groove. [Specific implementation method]

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] The terms "first," "second," and "third" in this application are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of such features. In the description of this application, "multiple" means at least two, for example, two, three, etc., unless otherwise specifically defined. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications also change accordingly. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products, or devices.

[0035] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] In the related art, an atomizer generally includes a shell and an atomizing core. The shell is formed with an air flow channel and a liquid storage tank. The liquid storage tank is used to store the atomizing medium. The atomizing core has an atomizing surface and a liquid absorption surface opposite to each other. The liquid absorption surface is arranged toward the liquid storage tank and is connected to the liquid storage tank. The atomizing medium absorbed by the liquid absorption surface flows to the atomizing surface for atomization to form an aerosol. The aerosol atomized by the atomizing surface will be inhaled by the user through a tortuous air flow channel. However, an excessively long air flow channel will allow more aerosol to contact the inner wall surface of the air flow channel, resulting in a reduction in the amount of aerosol output.

[0037] Based on this, the atomizer core provided in the embodiment of the present application can shorten the aerosol outlet path, reduce aerosol condensation, and thus increase the aerosol output.

[0038] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0039] Please refer to Figure 1, which is a simplified structural diagram of an atomizer provided in an embodiment of the present application. In this embodiment, an atomizer is provided that, when powered, atomizes an atomizing medium to form an aerosol. This atomizer can be used in various fields, such as medical treatment, cosmetic treatment, and recreational smoking.

[0040] As shown in Figure 1, the atomizer includes a shell 1, an atomizing core 2, a mounting seat (not shown) and a thimble 13. The shell 1 includes a mouthpiece, an air flow channel 12 and a liquid storage tank 11. The liquid storage tank 11 stores atomizing medium, and the air flow channel 12 connects the atomizing core 2 and the mouthpiece. The atomizing core 2 is connected to the liquid storage tank 11 and is used to atomize the atomizing medium flowing out of the liquid storage tank 11 to form an aerosol when power is turned on. The aerosol formed by the atomization of the atomizing core 2 flows out to the mouthpiece through the air flow channel 12 for the user to inhale. The mounting seat is arranged in the shell 1, and the thimble 13 is arranged on the mounting seat and abuts the atomizing core 2 for being electrically connected to the power supply to supply power to the atomizing core 2. The power supply can be a battery or a battery assembly.

[0041] The specific structure of the atomizer core 2 is described below.

[0042] In one embodiment, referring to Figures 2 and 3 , Figure 2 is a schematic diagram of an atomizer core of Example 1 from a first perspective, and Figure 3 is a schematic diagram of an atomizer core of Example 1 from a second perspective. An atomizer core 2 is provided, comprising a porous matrix 20 and a heating element 22 .

[0043] The porous substrate 20 has a first surface 201, a second surface 202, a third surface 203, and a fourth surface 204. The first surface 201 and the second surface 202 are adjacent to each other; the third surface 203 is disposed opposite the first surface 201 along a first direction Y; and the fourth surface 204 is disposed opposite the second surface 202 along a second direction X. The second direction X is not parallel to the first direction Y; specifically, the second direction X and the first direction Y may be perpendicular to each other.

[0044] 2 , a lower liquid tank 21 is provided on the first surface 201 of the porous substrate 20 . The lower liquid tank 21 is connected to the liquid storage tank 11 . The atomized medium in the liquid storage tank 11 can flow to the second surface 202 through the lower liquid tank 21 .

[0045] In one embodiment, the lower liquid tank 21 extends along the first direction Y and can be a blind tank, i.e., a groove that does not penetrate the porous substrate 20 along the first direction Y. The lower liquid tank 21 can be a rectangular parallelepiped, a cube, a cylinder, an irregular polygon, etc. Without affecting the thickness and strength of the porous substrate 20 in the first direction Y, the depth of the lower liquid tank 21 can be greater to improve the efficiency of the atomized medium flowing to the second surface 202.

[0046] In another specific embodiment, referring to FIG4 , FIG4 is an overall schematic diagram of the atomizer core of Example 2. The side wall of the lower liquid tank 21 facing away from the second surface 202 has an opening, and the lower liquid tank 21 can also be connected to the liquid storage tank 11 through the opening. In the plane area of ​​the lower liquid tank 21 after it is unfolded in the same accommodating space, the side wall of the lower liquid tank 21 facing away from the second surface 202 has an opening, which makes the liquid absorption area larger, increases the effective liquid absorption area, and improves the liquid absorption efficiency. Specifically, as shown in FIG4 , the side of the lower liquid tank 21 facing away from the second surface 202 is an open end, that is, the side wall has no corresponding side wall, and the lower liquid tank 21 is completely exposed through the open end.

[0047] The porous matrix 20 has a plurality of microporous structures, and the microporous structures have capillary forces. The atomized medium in the liquid storage tank 11 is directed to the lower liquid tank 21, and the atomized medium in the lower liquid tank 21 is directed to the second surface 202 of the porous matrix 20 through the capillary force of the porous matrix 20. The porous matrix 20 can specifically be a ceramic porous matrix, a glass porous matrix, a polymer porous matrix, etc. In the present embodiment, the porous matrix 20 is a porous ceramic, and the disordered pores formed in the preparation process of the porous ceramic have capillary forces. In other embodiments, the porous matrix 20 is other porous structures. For example, a plurality of through holes are provided on a dense matrix to form a porous structure. The dense matrix can be dense ceramic, glass, etc. Specifically, the porous matrix 20 can be a regular cuboid or a cube; or it can be other irregular three-dimensional structures.

[0048] The heating element 22 is disposed on the second surface 202 of the porous substrate 20 and is used to atomize the atomizing medium flowing through the lower liquid tank 21 to the second surface 202 to form an aerosol.

[0049] Specifically, the heating element 22 can be a filamentary structure or a strip-shaped structure. The heating element 22 extends in a curve to increase the contact area between the heating element 22 and the porous substrate 20 within the effective atomization surface area. Specifically, the heating element 22 is printed on the second surface 202 of the porous substrate 20 by silk screen printing and sintered into shape. The heating element 22 extends in an "S"-shaped curve. The heating element 22 includes a first straight segment, a second straight segment, a third straight segment, and a first curved segment and a second curved segment. The first straight segment, the second straight segment, and the third straight segment are parallel to each other, and the second straight segment is located between the first straight segment and the third straight segment along the first direction Y. The first curved segment connects the first end of the first straight segment and the first end of the second straight segment respectively, and the first straight segment, the first curved segment, and the second straight segment are connected end to end in sequence. The second curved segment connects the second end of the second straight segment and the first end of the third straight segment, and the second straight segment, the second curved segment, and the third straight segment are connected end to end in sequence. The material of the heating element 22 includes at least one of a nickel-based alloy, an iron-based alloy, and a ruthenium-based alloy.

[0050] In one embodiment, along the length direction of the atomizer, the air flow channel 12 extends straight from the bottom to the top of the atomizer, and the angle between the second surface 202 of the porous matrix 20 and the extension direction of the air flow channel 12 is less than 45°, and can be 0°, 15°, 30°, 45°, etc. Preferably, the angle between the second surface 202 of the porous matrix 20 and the extension direction of the air flow channel 12 is 0°, that is, parallel. The second surface 202 of the porous matrix 20 forms part of the side surface of the air flow channel 12, so that the second surface 202 of the porous matrix 20 is connected to the air flow channel 12, and the second surface 202 of the porous matrix 20 is provided with a heating element 22. The atomized medium is atomized by the heating element 22 to form an aerosol and directly enters the air flow channel 12, which reduces the tortuosity of the air flow channel 12, reduces aerosol condensation, and increases the amount of atomization. The aerosol can flow to the mouthpiece faster and be inhaled by the user.

[0051] As described above, a lower liquid tank 21 is provided on the first surface 201 of the porous matrix 20, and a heating element 22 is provided on the second surface 202 adjacent to the first surface. The atomized medium in the liquid storage tank 11 is diverted to the lower liquid tank 21, and the atomized medium in the lower liquid tank 21 is diverted to the second surface 202 of the porous matrix 20 by the capillary force of the porous matrix 20. The heating element 22 heats the atomized medium and atomizes it to form an aerosol. In this way, the aerosol atomized on the second surface 202 of the porous matrix 20 can flow out directly without passing through other surfaces of the porous matrix 20 that are different from the second surface 202, thereby shortening the aerosol outlet path, reducing the tortuosity of the air flow channel 12, and avoiding condensation of the aerosol due to contact with other surfaces of the porous matrix 20. Less aerosol condenses on the inner wall surface of the air flow channel 12, effectively increasing the aerosol mist output and improving the user experience.

[0052] In one embodiment, referring to FIG2 , the atomizer core 2 further includes a soldering pad 23 and a lead 24 . The soldering pad 23 is provided on the second surface 202 of the porous substrate 20 and is electrically connected to the heating element 22 . Specifically, the soldering pad 23 extends along the first direction Y, and the first end of the soldering pad 23 is electrically connected to the heating element 22 , and the second end of the soldering pad extends along the first direction Y to a position near the third surface 203 of the porous substrate 20 . The soldering pad 23 and the heating element 22 are printed on the second surface 202 of the porous substrate 20 by silk screen printing and sintered into shape.

[0053] As shown in Figures 2 and 3, the first end of the lead 24 is electrically connected to the pad 23, and the second end of the lead 24 extends to one side of the third surface 203 of the porous matrix 20. Referring to Figure 5, Figure 5 is a schematic structural diagram of the atomizer core and the ejector pin in accordance with Example 1. The ejector pin 13 is specifically in contact with the second end of the lead 24 and is electrically connected to the lead 24. Among them, the maximum dimension of the porous matrix 20 in the first direction Y is greater than the maximum dimension of the porous matrix 20 in the second direction X. It should be noted that, along the first direction Y, the distance from the end face of the first surface 201 of the porous matrix 20 farthest from the third surface 203 to the end face of the third surface 203 farthest from the first surface 201 is the maximum dimension of the porous matrix 20 in the first direction Y; similarly, along the second direction X, the distance from the end face of the second surface 202 of the porous matrix 20 farthest from the fourth surface 204 to the end face of the fourth surface 204 farthest from the second surface 202 is the maximum dimension of the porous matrix 20 in the second direction X. In this way, when the ejector pin 13 abuts against the atomizer core 2 along the first direction Y, the porous matrix 20 in this direction has a greater thickness and strength, and the abutment reliability is stronger, and the porous matrix 20 is not easily damaged.

[0054] Specifically, the second end of the lead 24 passes through the porous substrate 20 along the second direction X and leads to the side of the third surface 203 of the porous substrate 20, i.e., the side opposite the lower liquid tank 21. Alternatively, the second end of the lead 24 extends along the first direction Y toward the third surface 203 of the porous substrate 20 and is wound around the side of the third surface 203 of the porous substrate 20. The first end of the lead 24 contacts the pad 23 for electrical conduction, and the second end of the lead 24 connects to the ejector pin 13, achieving electrical connection between the lead 24 and the ejector pin 13 at the third surface 203 of the porous substrate 20. This method does not substantially change the conventional electrical connection method of the atomizer core 2 and can be compatible with existing battery assemblies.

[0055] In one specific embodiment, referring to FIG3 , a relief groove 26 is defined on the third surface 203 of the porous substrate 20. The second end of the lead 24 extends along the second direction X through the sidewall of the relief groove 26 near the second surface 202 and into the relief groove 26. A portion of the ejector pin 13 extends into the relief groove 26 and abuts the second end of the lead 24. Referring to FIG5 , the ejector pin 13 abuts along the first direction Y against the side of the second end of the lead 24 facing away from the first surface 201. The relief groove 26 may be a notch at the junction of the third surface 203 and the fourth surface 204 of the porous substrate 20, and may be located at a vertex of the porous substrate 20.

[0056] By providing the avoidance groove 26 and allowing the ejector pin 13 to partially extend into the avoidance groove 26 and abut against the lead 24, the sidewall of the avoidance groove 26 can be used to limit the ejector pin 13. At the same time, compared with the solution in which the porous matrix 20 and the ejector pin 13 are arranged side by side along the second direction X, the space occupied by the porous matrix 20 and the ejector pin 13 can be reduced along the second direction X, thereby facilitating the miniaturization of the product.

[0057] The depth of the avoidance groove 26 along the first direction Y can be 0.5 mm to 1.5 mm, specifically 0.5 mm, 0.8 mm, 1.1 mm, 1.5 mm, etc. This minimizes the effect of the avoidance groove 26 on the thickness of the porous substrate 20 at the location corresponding to the avoidance groove 26 , ensuring that the end of the ejector pin 13 abutting the lead 24 is sufficiently distant from the first surface of the porous substrate 20 along the first direction Y. This ensures sufficient strength of the porous substrate 20 at the location corresponding to the ejector pin 13, increases abutment reliability, and reduces the risk of the ejector pin 13 abutting the porous substrate 20, causing the porous substrate 20 to break.

[0058] In another specific embodiment, see Figure 6, which is a schematic diagram of the atomizer core of Example 3; Figure 7 is a schematic diagram of the structure of the atomizer core and the ejector pin shown in Figure 6. Unlike the embodiment corresponding to Figure 5 above, after the second end of the lead wire 24 passes through the sidewall of the avoidance groove 26 near the second surface 202 along the second direction X and extends into the avoidance groove 26, the second end of the lead wire 24 further bends and extends to the third surface 203 of the porous substrate 20. The ejector pin 13 specifically abuts the second end of the lead wire 24 where it bends to the third surface of the porous substrate 20.

[0059] Compared to the porous substrate 20 shown in FIG3 , the thickness of the porous substrate 20 at the location where the ejector pin 13 abuts the porous substrate 20 is greater than the thickness of the porous substrate 20 at the location corresponding to the avoidance groove 26 . This can more fully utilize the strength of the porous substrate 20 along the first direction Y, thereby improving the reliability of the abutment. The thickness of the porous substrate 20 referred to in this application refers to the maximum dimension of the porous substrate 20 along the first direction Y.

[0060] In the embodiments corresponding to Figures 3 and 6 above, referring to Figure 2, the first end of the lead 24 can specifically contact and be electrically connected to the second end of the pad 23 close to the third surface 203; wherein the second direction X is perpendicular to the first direction Y; in this way, the depth of the corresponding avoidance groove 26 along the first direction Y can be made smaller to ensure the thickness of the porous matrix 20 at the position corresponding to the avoidance groove 26.

[0061] Of course, the first end of the lead 24 may also be connected to the middle position or a position close to the middle position of the pad 23 along the first direction Y. In this way, the contact area between the first end of the lead 24 and the pad 23 can be increased, thereby improving the connection reliability between the two.

[0062] In another embodiment, referring to Figures 8 and 9, Figure 8 is an overall schematic diagram of the atomizer core and the ejector pin in abutment with each other from a first perspective in Example 4, and Figure 9 is an overall schematic diagram of the atomizer core and the ejector pin in abutment with each other from a second perspective in Example 4. The first end of the lead 24 is electrically connected to the pad 23, and the second end of the lead 24 extends along the first direction Y on the second surface 202 of the porous substrate 20 and is wound around to the third surface 203; that is, the second end of the lead 24 does not pass through the porous substrate 20, but is directly wound from the outer wall surface of the porous substrate 20 to the third surface 203 of the porous substrate 20. In this way, compared with the porous substrate 20 shown in Figure 6, there is no need to open a avoidance groove 26 for positioning on the porous substrate 20, the overall strength of the porous substrate 20 is higher, and the mold for producing the porous substrate 20 can be simplified.

[0063] In this embodiment, referring to Figure 10 , which is a schematic diagram of the overall atomizer core of Example 5, the solder pad 23 extends along a first direction Y, and the first end of the lead 24 specifically contacts and electrically connects to the middle of or near the middle of the solder pad 23 along the first direction Y. This allows for a larger contact area between the first end of the lead 24 and the solder pad 23, improving the reliability of the electrical connection. Of course, in this embodiment, the first end of the lead 24 can also contact and electrically connect to the second end of the solder pad 23.

[0064] Among them, due to the surface tension of the liquid, the heating element 22 protrudes from the second surface 202 of the porous matrix 20; after the porous matrix 20 guides the atomized medium to the second surface 202 of the porous matrix 20 through the capillary effect, the atomized medium will form a layer of liquid film on the second surface 202 of the porous matrix 20; if the thickness of the liquid film is too thick, the problem of liquid explosion is likely to occur during the atomization process.

[0065] To this end, in some embodiments, referring to FIG11 , FIG11 is a schematic diagram of the overall structure of the atomizer core provided in another embodiment of the present application. The second surface 202 of the porous substrate 20 is provided with a plurality of liquid guide grooves 25. The plurality of liquid guide grooves 25 are distributed on one side or both sides of the heating element 22; and the plurality of liquid guide grooves 25 located on the same side of the heating element 22 are spaced apart along the extension direction of the heating element 22. Among them, the liquid guide groove 25 is a blind groove, and the liquid guide groove 25 is specifically a long strip groove, which specifically extends along the extension direction of the heating element.

[0066] The length-to-width ratio of the liquid-conducting groove 25 is greater than 1.5. Specifically, the length of the liquid-conducting groove 25 can be in the range of 0.3-1.5 mm; the width of the liquid-conducting groove 25 can be in the range of 0.1-0.5 mm. For example, the length is at least one specific value of 0.3 mm, 0.5 mm, 0.7 mm, or 1.5 mm; the width is at least one specific value of 0.1 mm, 0.2 mm, or 0.5 mm. The depth of the liquid-conducting groove 25 can be in the range of 0.2-2.0 mm. For example, the depth can be at least one specific value of 0.2 mm, 0.5 mm, 1.7 mm, or 2.0 mm. The distance between the liquid-conducting groove 25 and the heating element 22 can be in the range of 0.1-0.5 mm. Too far a distance is not conducive to rapid liquid supply, and too close a distance may cause the liquid in the blind groove to explode.

[0067] The above solution, by providing a liquid conducting groove 25 on the second surface 202 of the porous matrix 20, can change the liquid surface shape and make the liquid film formed on the second surface 202 concave, so as to reduce the thickness of the liquid film and reduce the risk of the solution exploding due to excessive thickness of the liquid film. At the same time, the liquid conducting groove 25 can buffer part of the atomized medium and has extremely low resistance. During the atomization process, the atomized medium in the liquid conducting groove 25 can be quickly replenished to the heating element 22, thereby improving the liquid supply efficiency and avoiding dry burning and liquid explosion. At the same time, the specific size ratio of the liquid conducting groove 25 can also limit the shape of the liquid bubble in the boiling state, minimize the liquid explosion, and fully atomize the atomized medium to improve the user experience.

[0068] In a specific embodiment, due to temperature differences at various locations on the porous substrate 20, the atomization rate at various locations on the second surface 202 of the porous substrate 20 may be different. Specifically, some areas may have a faster atomization rate and consume the atomizing medium more quickly, while other areas may have a relatively slower atomization rate. Therefore, it is necessary to promptly supply liquid to areas with faster atomization rates to avoid dry burning or liquid explosion.

[0069] Therefore, in one embodiment, among the multiple liquid-conducting grooves 25 located on the same side of the heating element 22, every two adjacent liquid-conducting grooves 25 are connected by a buried hole. In this way, the atomized medium stored in each liquid-conducting groove 25 can flow between different liquid-conducting grooves 25 through the buried hole to quickly supply liquid to the area with a faster atomization rate, thereby improving the liquid-conducting and liquid-supplying capabilities of the entire second surface 202 and avoiding dry burning caused by insufficient local liquid supply. Among them, the buried hole can retain some of the atomized medium, so that the atomized medium has a larger area than the porous substrate 20, and can quickly provide the atomized medium to the second surface 202, thereby improving the liquid-conducting and liquid-supply capabilities of the second surface 202 and avoiding dry burning caused by insufficient local liquid supply.

[0070] The present application provides an atomizer core 2. The atomizer core 2 includes: a porous substrate 20 and a heating element 22. The porous substrate 20 has a first surface 201 and a second surface 202 adjacent to each other; a lower liquid tank 21 is provided on the first surface 201 of the porous substrate 20; and the heating element 22 is provided on the second surface 202 of the porous substrate 20 for atomizing the atomizing medium that flows through the lower liquid tank 21 to the second surface 202 to form an aerosol. In this way, the aerosol atomized on the second surface 202 of the porous substrate 20 can flow out directly without passing through other surfaces of the porous substrate 20 other than the second surface 202, shortening the aerosol outlet path, reducing the tortuosity of the airflow channel 12, and avoiding condensation of the aerosol due to contact with other surfaces of the porous substrate 20. Less aerosol condenses on the inner wall surface of the airflow channel 12, effectively increasing the aerosol output and improving the user experience.

[0071] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An atomizer core, comprising: The porous substrate has a first surface and a second surface adjacent to each other; the first surface of the porous substrate is provided with a lower liquid tank; The heating element is arranged on the second surface of the porous substrate and is used for atomizing the atomizing medium flowing through the lower liquid tank to the second surface to form an aerosol.

2. The atomizer core according to claim 1, wherein: The porous matrix further comprises a third surface arranged opposite to the first surface along a first direction, and a fourth surface arranged opposite to the second surface along a second direction, wherein the second direction is not arranged parallel to the first direction; the atomizing core further comprises: A soldering pad, disposed on the second surface of the porous substrate and electrically connected to the heating element; A lead wire, wherein a first end of the lead wire is electrically connected to the pad, and a second end of the lead wire extends to one side of the third surface of the porous matrix.

3. The atomizer core according to claim 2, wherein: A shunting groove is provided on the third surface of the porous matrix, and the second end of the lead passes through the side wall of the shunting groove close to the second surface along the second direction and extends into the shunting groove.

4. The atomizer core according to claim 2, wherein: The third surface of the porous matrix is ​​provided with an escape groove, and the second end of the lead wire passes through the side wall of the escape groove close to the second surface along the second direction and extends into the escape groove, and then bends and extends to the third surface of the porous matrix.

5. The atomizer core according to claim 2, wherein: The second end of the lead extends along the first direction on the second surface of the porous matrix and is wound around to the third surface of the porous matrix.

6. The atomizer core according to any one of claims 2 to 5, wherein: The pad extends along the first direction, and the pad is at least partially disposed at a position close to the third surface to the second surface; wherein the second direction is perpendicular to the first direction; and the first end of the lead is in contact with an end of the pad close to the third surface. or the first end of the lead is in contact with and connected to the pad at a middle position or a position close to the middle along the first direction.

7. The atomizer core according to any one of claims 2 to 5, wherein: The maximum dimension of the porous matrix in the first direction is greater than the maximum dimension of the porous matrix in the second direction.

8. The atomizer core according to any one of claims 1 to 5, wherein: The second surface of the porous matrix is ​​provided with a plurality of liquid conducting grooves, and the plurality of liquid conducting grooves are distributed on one side or both sides of the heating element; the plurality of liquid conducting grooves located on the same side of the heating element are arranged at intervals along the extension direction of the heating element.

9. The atomizer core according to claim 8, wherein: Among the plurality of liquid-conducting grooves located on the same side of the heating element, every two adjacent liquid-conducting grooves are connected through a buried hole.

10. The atomizer core according to any one of claims 1 to 5, wherein: The side wall of the lower liquid tank facing away from the second surface has an opening, or the side of the lower liquid tank facing away from the second surface is an open end.

11. An atomizer, wherein: include: A housing, including an air flow channel and a liquid storage tank; The atomizer core is the atomizer core as described in any one of claims 1 to 10, which is arranged in the shell and located at the bottom of the liquid storage tank; wherein the lower liquid tank of the atomizer core is connected to the liquid storage tank, and the second surface of the porous matrix forms a partial side surface of the airflow channel.

12. The atomizer according to claim 11, wherein The airflow channel extends straightly from the bottom to the top of the atomizer, and the angle between the second surface of the porous matrix and the extension direction of the airflow channel is less than 45°.

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