Atomizing core and atomizer

Abstract

The invention provides an atomizing core and an atomizer. The atomizing core comprises a porous base body and a heating element. The porous substrate is provided with a first surface and a second surface which are adjacent; a liquid discharging groove is formed in the first surface of the porous matrix; the heating element is arranged on the second surface of the porous base body and used for atomizing the atomizing medium flowing to the second surface through the lower liquid groove so as to form aerosol. Aerosol formed by atomization of the atomization core on the second surface of the porous substrate can directly flow out and does not need to pass through other surfaces, different from the second surface, of the porous substrate, so that an air outlet path of the aerosol is shortened, bending of an airflow channel is reduced, condensation of the aerosol due to contact with the other surfaces of the porous substrate is avoided, and the quality of the aerosol is improved. Less aerosol is condensed on the inner wall surface of the airflow channel, so that the aerosol outlet amount is effectively increased, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic atomization, and in particular to an atomization core and an atomizer. Background Art

[0002] At present, the atomizer includes an atomizing core, which is used to atomize the atomizing medium to form an aerosol. However, the atomization amount of the aerosol formed by atomization of the existing atomizer flowing out of the air flow channel is relatively small. Summary of the invention

[0003] The main technical problem solved by the present application is the relatively small amount of aerosol discharged from the air flow channel.

[0004] In order to solve the above technical problems, a technical solution adopted in this application is:

[0005] Provided is an atomizer core, comprising: a porous substrate having a first surface and a second surface adjacent to each other, wherein a lower liquid groove is provided on the first surface of the porous substrate; and a heating element is provided on the second surface of the porous substrate and is used for atomizing an atomizing medium flowing through the lower liquid groove to the second surface to form an aerosol.

[0006] In one embodiment, the porous matrix also 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 arranged parallel to the first direction; the atomization core also includes: a solder pad, which is arranged 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 solder pad, and a second end of the lead extends to one side of the third surface of the porous matrix.

[0007] In one embodiment, a avoidance 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 avoidance groove close to the second surface along the second direction and extends into the avoidance groove.

[0008] In one embodiment, a avoidance groove is opened 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.

[0009] In one embodiment, 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.

[0010] In one embodiment, 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; 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 close to the middle position of the pad along the first direction.

[0011] 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.

[0012] In one embodiment, a plurality of liquid conducting grooves are disposed on the second surface of the porous substrate, 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.

[0013] 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.

[0014] In one embodiment, a side wall of the lower liquid tank facing away from the second surface has an opening, or a side wall of the lower liquid tank facing away from the second surface has no side wall.

[0015] In order to solve the above technical problems, the second technical solution provided by the present 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, 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.

[0016] 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°.

[0017] 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 flowing 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 atomizer core can directly flow out the aerosol formed by atomization of the second surface of the porous substrate without passing through other surfaces of the porous substrate different from the second surface, thereby shortening the exhaust path of the aerosol, 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

[0018] Figure 1 is a simplified structural diagram of the atomizer provided in an embodiment of the present application;

[0019] Figure 2 This is an overall schematic diagram of the atomizer core of Example 1 from the first viewing angle;

[0020] Figure 3 This is an overall schematic diagram of the atomizer core of Example 1 from a second viewing angle;

[0021] Figure 4 This is an overall schematic diagram of the atomizer core of Embodiment 2;

[0022] Figure 5 This is a schematic diagram of the structure of the atomizer core and the ejector pin abutting against each other in the first embodiment;

[0023] Figure 6 This is an overall schematic diagram of the atomizer core of Embodiment 3;

[0024] Figure 7 yes Figure 6 The schematic diagram of the structure of the atomizer core abutting against the ejector pin is shown;

[0025] Figure 8 This 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;

[0026] Fig. 9 This is an overall schematic diagram of the atomizer core and the ejector pin abutting against each other in the second viewing angle of the fourth embodiment;

[0027] Fig.10 This is a schematic diagram of the overall atomizer core of Embodiment 5;

[0028] Fig.11 It is a schematic diagram of the overall structure of the atomizer core provided in another embodiment of the present application.

[0029] Description of Figure Numbers:

[0030] 1-housing; 11-liquid storage tank; 12-air flow channel; 13-thimble;

[0031] 2-atomizing core; 20-porous matrix; 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. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] 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.

[0036] 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.

[0037] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0038] See also Figure 1 , Figure 1 : is a simplified structural diagram of an atomizer provided in an embodiment of the present application. In this embodiment, an atomizer is provided, which is used to atomize an atomizing medium to form an aerosol when powered on. The atomizer can be specifically used in different fields, such as medical treatment, beauty, leisure smoking, etc.

[0039] like Figure 1 As shown, the atomizer includes a shell 1, an atomizing core 2, a mounting seat (not shown) and an ejector pin 13. The shell 1 includes a nozzle, an air flow channel 12 and a liquid storage tank 11. The liquid storage tank 11 stores an atomizing medium, and the air flow channel 12 connects the atomizing core 2 and the nozzle. 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 nozzle through the air flow channel 12 for the user to inhale. The mounting seat is arranged in the shell 1, and the ejector pin 13 is arranged on the mounting seat and abuts against the atomizing core 2, and is used to be electrically connected to a power source to supply power to the atomizing core 2. The power source can be a battery or a battery assembly.

[0040] The specific structure of the atomizer core 2 is described below.

[0041] In one embodiment, see Figure 2 and Figure 3 , Figure 2 This is an overall schematic diagram of the atomizer core of Example 1 from the first viewing angle; Figure 3 1 is a schematic diagram of the atomizer core of the first embodiment from a second viewing angle. An atomizer core 2 is provided, and the atomizer core 2 includes a porous matrix 20 and a heating element 22 .

[0042] 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 arranged adjacent to each other; the third surface 203 is arranged opposite to the first surface 201 along the first direction Y; and the fourth surface 204 is arranged opposite to the second surface 202 along the second direction X. The second direction X is not arranged parallel to the first direction Y; specifically, the second direction X and the first direction Y may be perpendicular to each other.

[0043] Combination Figure 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 .

[0044] In a specific embodiment, the lower liquid tank 21 extends along the first direction Y, and can be a blind groove, that is, a groove that does not penetrate the porous substrate 20 along the first direction Y. The space of the lower liquid tank 21 can be a cuboid, 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 deeper to improve the efficiency of the atomized medium flowing to the second surface 202.

[0045] In another specific embodiment, see Figure 4 , Figure 4 2 is a schematic diagram of the atomizer core of the second embodiment. 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 the lower liquid tank 21 is unfolded in the same accommodation space, the side wall of the lower liquid tank 21 facing away from the second surface 202 has an opening, so that the liquid absorption area is larger, the effective liquid absorption area is increased, and the liquid absorption efficiency is improved. Specifically, as Figure 4 The side of the lower liquid tank 21 facing away from the second surface 202 is an open end, that is, the side wall of the open end has no corresponding side wall, and the lower liquid tank 21 is completely exposed through the open end.

[0046] 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, and the dense matrix can be a 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.

[0047] 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 to the second surface 202 through the lower liquid tank 21 to form an aerosol.

[0048] Specifically, the heating element 22 can be a filamentary structure or a strip structure, and 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. The heating element 22 extends in an "S"-shaped curve, and the heating element 22 includes a first straight line segment, a second straight line segment, a third straight line segment, and a first curved line segment and a second curved line segment. The first straight line segment, the second straight line segment, and the third straight line segment are parallel to each other, and the second straight line segment is located between the first straight line segment and the third straight line segment along the first direction Y. The first curved line segment connects the first end of the first straight line segment and the first end of the second straight line segment, respectively, and the first straight line segment, the first curved line segment, and the second straight line segment are connected end to end in sequence. The second curved line segment connects the second end of the second straight line segment and the first end of the third straight line segment, and the second straight line segment, the second curved line segment, and the third straight line 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.

[0049] In one embodiment, along the length direction of the atomizer, the airflow channel 12 extends straight from the bottom to the top of the atomizer, and the angle between the second surface 202 of the porous substrate 20 and the extension direction of the airflow channel 12 is less than 45°, which can be 0°, 15°, 30°, 45°, etc. Preferably, the angle between the second surface 202 of the porous substrate 20 and the extension direction of the airflow channel 12 is 0°, that is, parallel. The second surface 202 of the porous substrate 20 forms a part of the side of the airflow channel 12, so that the second surface 202 of the porous substrate 20 is connected to the airflow channel 12, and the second surface 202 of the porous substrate 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 airflow channel 12, which reduces the tortuosity of the airflow channel 12, reduces the condensation of the aerosol, and increases the amount of atomization. The aerosol can flow to the mouthpiece faster and be inhaled by the user.

[0050] As described above, a lower liquid tank 21 is provided on the first surface 201 of the porous substrate 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 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 substrate 20 by the capillary force of the porous substrate 20, and 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 substrate 20 can flow out directly without passing through other surfaces of the porous substrate 20 that are different from the second surface 202, shortening the aerosol outlet path, reducing the tortuosity of the airflow channel 12, and avoiding the 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 mist output and improving the user experience.

[0051] In one embodiment, see Figure 2 The atomizer core 2 also includes a pad 23 and a lead 24. The 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 pad 23 extends along the first direction Y, and the first end of the pad 23 is electrically connected to the heating element 22, and the second end of the pad extends along the first direction Y to a position close to the third surface 203 of the porous substrate 20. The 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.

[0052] like Figure 2 and Figure 3 As shown, 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 substrate 20. Figure 5 , Figure 5It is a structural schematic diagram of the atomizer core and the ejector pin of the first embodiment. The ejector pin 13 is specifically abutted against the second end of the lead 24 and is electrically connected to the lead 24. Among them, the maximum size of the porous matrix 20 in the first direction Y is greater than the maximum size 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 size 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 size of the porous matrix 20 in the second direction X. In this way, when the ejector pin 13 abuts the atomizer core 2 along the first direction Y, the thickness of the porous matrix 20 in this direction is large, the strength is large, the abutment reliability is strong, and the porous matrix 20 is not easily damaged.

[0053] Specifically, the second end of the lead 24 passes through the porous substrate 20 along the second direction X and leads to the third surface 203 of the porous substrate 20, that is, the opposite side of the lower liquid tank 21. Or, the second end of the lead 24 extends along the first direction Y toward the third surface 203 close to the porous substrate 20 and is wound to the third surface 203 of the porous substrate 20. The first end of the lead 24 contacts the pad 23 for conduction, and the second end of the lead 24 is connected to the ejector pin 13 to achieve electrical connection between the lead 24 and the ejector pin 13 on the third surface 203 of the porous substrate 20. This method does not basically change the conventional electrical connection method of the atomizer core 2, and can be compatible with existing battery components.

[0054] In a specific embodiment, see Figure 3 The third surface 203 of the porous substrate 20 is provided with an escape groove 26. The second end of the lead 24 passes through the side wall of the escape groove 26 close to the second surface 202 along the second direction X and extends into the escape groove 26. A portion of the ejector pin 13 extends into the escape groove 26 and abuts against the second end of the lead 24. Figure 5 The ejector pin 13 is specifically in contact with the side surface of the second end of the lead 24 away from the first surface 201 along the first direction Y. The avoidance groove 26 can be a notch at the connection between the third surface 203 and the fourth surface 204 of the porous matrix 20, and can be specifically located at a vertex of the porous matrix 20.

[0055] By providing the avoidance groove 26 and allowing part of the ejector pin 13 to extend into the avoidance groove 26 and abut against the lead 24, the side wall 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 miniaturization of the product.

[0056] The depth of the avoidance groove 26 along the first direction Y may be 0.5 mm to 1.5 mm, such as 0.5 mm, 0.8 mm, 1.1 mm, 1.5 mm, etc. In this way, the influence of the avoidance groove 26 on the thickness of the porous substrate 20 at the position corresponding to the avoidance groove 26 can be reduced as much as possible, so as to ensure that the end of the ejector pin 13 abutting against the lead 24 has a sufficient distance from the first surface of the porous substrate 20 along the first direction Y, thereby ensuring that the position of the porous substrate 20 corresponding to the ejector pin 13 has sufficient strength, increasing the abutment reliability, and reducing the risk of the ejector pin 13 abutting against the porous substrate 20 and causing the porous substrate 20 to break.

[0057] In another specific implementation, see Figure 6 , Figure 6 This is an overall schematic diagram of the atomizer core of Embodiment 3; Figure 7 yes Figure 6 The schematic diagram of the structure of the atomizer core and the ejector pin abutting against each other is shown in FIG. Figure 5 The difference between the corresponding embodiments is that after the second end of the lead 24 passes through the side wall of the avoidance groove 26 close to the second surface 202 along the second direction X and extends into the avoidance groove 26, the second end of the lead 24 is further bent and extends to the third surface 203 of the porous matrix 20. The ejector pin 13 specifically abuts against the second end of the lead 24 bent to the third surface of the porous matrix 20.

[0058] Compared to Figure 3 In the porous substrate 20 shown, the thickness of the porous substrate 20 at the position where the ejector pin 13 abuts against the porous substrate 20 is greater than the thickness of the porous substrate 20 at the position corresponding to the avoidance groove 26; the strength of the porous substrate 20 along the first direction Y can be more fully utilized to improve the reliability of the abutment. The thickness of the porous substrate 20 involved in this application refers to the maximum dimension of the porous substrate 20 along the first direction Y.

[0059] In the above Figure 3 and Figure 6 In the corresponding embodiment, see 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.

[0060] 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 increasing the connection reliability between the two.

[0061] In yet another embodiment, see Figure 8 and Fig. 9 , Figure 8 This is an overall schematic diagram of the atomizer core and the ejector pin in the fourth embodiment from the first viewing angle. Fig. 9 This is a schematic diagram of the atomizer core and the ejector pin of the fourth embodiment in a second viewing angle. The first end of the lead wire 24 is electrically connected to the pad 23, and the second end of the lead wire 24 extends along the first direction Y on the second surface 202 of the porous substrate 20 and is wound to the third surface 203; that is, the second end of the lead wire 24 does not pass through the porous substrate 20, but is directly wound from the outer wall of the porous substrate 20 to the third surface 203 of the porous substrate 20. In this way, compared with Figure 6 The porous substrate 20 shown does not need to have an avoidance groove 26 for positioning on the porous substrate 20 . The overall strength of the porous substrate 20 is high, and the mold for producing the porous substrate 20 can be simplified.

[0062] In this embodiment, see Fig.10 , Fig.10 : This is a schematic diagram of the atomizer core of Embodiment 5. The pad 23 extends along the first direction Y, and the first end of the lead 24 is specifically in contact with and electrically connected to the middle position or a position close to the middle of the pad 23 along the first direction Y. In this way, the first end of the lead 24 can have a larger contact area with the pad 23, thereby improving the reliability of the electrical connection. Of course, in this embodiment, the first end of the lead 24 can also be in contact with and electrically connected to the second end of the pad 23.

[0063] 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.

[0064] To this end, in some embodiments, see Fig.11 , Fig.11 : 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 arranged at intervals 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.

[0065] 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.

[0066] In the above scheme, by providing a liquid conducting groove 25 on the second surface 202 of the porous matrix 20, the liquid conducting groove 25 can change the liquid surface shape, so that the liquid film formed on the second surface 202 is concave, so as to reduce the thickness of the liquid film and reduce the risk of the solution exploding due to the 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 setting of 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.

[0067] In a specific embodiment, since there may be temperature differences at various positions of the porous substrate 20, the atomization rates at various positions of the second surface 202 of the porous substrate 20 are not the same, that is, the atomization rate of some areas is faster, the atomization medium is consumed faster, and the atomization rate of some areas is relatively slow. Therefore, it is necessary to supply liquid to the area with a faster atomization rate in time to avoid dry burning or liquid explosion.

[0068] 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 buried holes. In this way, the atomized medium stored in each liquid-conducting groove 25 can flow between different liquid-conducting grooves 25 through the buried holes 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 holes can retain part of the atomized medium, so that the atomized medium has a larger area than the porous matrix 20, and can quickly provide the atomized medium to the second surface 202, thereby improving the liquid-conducting and liquid-supplying capabilities of the second surface 202, and avoiding dry burning caused by insufficient local liquid supply.

[0069] 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; the first surface 201 of the porous substrate 20 is provided with a lower liquid tank 21; the heating element 22 is arranged on the second surface 202 of the porous substrate 20, and is used to atomize the atomizing medium flowing to the second surface 202 through the lower liquid tank 21 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 that are different from the second surface 202, shortening the aerosol outlet path, reducing the tortuosity of the airflow channel 12, and avoiding the 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 mist output and improving the user experience.

[0070] 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 present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An atomizer core, characterized in that: include: 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, characterized in that: 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, characterized in that: 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, characterized in that: The third surface of the porous matrix is ​​provided with an escape groove, and the second end of the lead 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, characterized in that: 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, characterized in that: 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 contacts and is electrically connected to an end of the pad close to the third surface; or the first end of the lead contacts and is connected to the middle position or a position close to the middle of the pad along the first direction.

7. The atomizer core according to any one of claims 2 to 5, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that 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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