Atomizing core, atomizer and electronic atomizing device

Abstract

The invention provides an atomizing core, an atomizer and an electronic atomizing device. The atomizing core comprises a liquid guide body, a first surface, a second surface and a through hole, wherein the liquid guide body is provided with the first surface and the second surface opposite to each other; the blocking piece is arranged on at least part of the inner wall face of the through hole and defines an air outlet channel or is matched with part of the inner wall face of the through hole to form the air outlet channel. The porosity of the blocking piece is smaller than that of the liquid guiding body; the heating element is arranged on the first surface of the liquid guide body and used for atomizing the atomizing medium to form aerosol; the aerosol flows out through the air outlet channel. Thus, the atomization medium in the liquid guide body cannot permeate into the air outlet channel through the inner wall face of the through hole, the air outlet channel is prevented from being blocked, and the user experience is improved; condensate of aerosol in the air outlet channel cannot permeate into the liquid guide body through the inner wall face of the through hole, and secondary heating is avoided.

Description

Technical Field

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

[0002] In the prior art, an electronic atomization device mainly consists of an atomizer and a power supply assembly. The atomizer generally includes a liquid storage member and an atomization core. The liquid storage member is used to store an atomizable liquid matrix, and the atomization core is used to heat and atomize the liquid matrix to form an aerosol for a smoker to consume; the power supply assembly is used to provide energy to the atomizer.

[0003] In the related art, a central through-hole cylindrical atomization core has the advantages of a long-strip atomization core and a round-tube atomization core, but there are also problems with poor user experience. Summary of the Invention

[0004] The main technical problem to be solved by this application is that the central through-hole is prone to accumulate atomization medium or condensate of the aerosol, affecting the user experience.

[0005] To solve the above technical problem, a technical solution adopted by this application is: to provide an atomization core, including: a liquid guide member having opposite first and second surfaces and a through-hole penetrating the first and second surfaces; a blocking member disposed on at least a part of the inner wall surface of the through-hole and defining an air outlet channel or cooperating with a part of the inner wall surface of the through-hole to form an air outlet channel; and the porosity of the blocking member is less than the porosity of the liquid guide member; a heating member disposed on the first surface of the liquid guide member for atomizing an atomization medium to form an aerosol; and the aerosol flows out through the air outlet channel.

[0006] In one embodiment, the blocking member includes a closed-loop covering layer or a sleeved tube, the blocking member covers the entire inner wall surface of the through-hole, and encloses to form the air outlet channel.

[0007] In one embodiment, the blocking member is the sleeved tube, the sleeved tube is sleeved in the through-hole and is disposed in fit with the inner wall surface of the through-hole; the sleeved tube includes an axially connected sleeved portion and a protruding portion, the sleeved portion covers at least a part of the inner wall surface of the through-hole, and the protruding portion protrudes axially from the first surface of the liquid guide member.

[0008] In one embodiment, along the axial direction of the sleeved tube, the length of the protruding portion is greater than the length dimension of the heating member.

[0009] In one embodiment, the thickness of the heating member is greater than or equal to 0.01 mm and less than or equal to 2 mm; along the axial direction of the sleeved tube, the length of the protruding portion of the sleeved tube is not greater than 5 mm.

[0010] In one embodiment, the blocking member is in contact with the heating member.

[0011] In one embodiment, the aperture diameter of the through hole is greater than or equal to 0.1 mm and less than or equal to 5 mm; the wall thickness of the blocking member is greater than or equal to 0.01 mm and less than or equal to 2 mm.

[0012] In one embodiment, the material of the blocking member includes one or more of dense metal, dense ceramic, dense glass, and dense polymer.

[0013] In one embodiment, the heating member includes a surrounding portion and two connecting portions; the surrounding portion is arranged along the circumferential direction of the through hole and is serrated; the two connecting portions are respectively connected to both ends of the surrounding portion and are used for electrically connecting with electrodes.

[0014] In one embodiment, a part of the side wall of the sleeving tube protrudes from the second surface of the liquid guide body along the axial direction.

[0015] To solve the above technical problems, the second technical solution provided by the present application is: an atomizer, including: a housing having a liquid storage chamber and an atomization chamber, the liquid storage chamber being used for storing an atomization medium; an atomization core disposed in the housing and being the atomization core as described above; wherein, the heating member and the air outlet channel of the atomization core are directly communicated with the atomization chamber.

[0016] To solve the above technical problems, the third technical solution provided by the present application is: an electronic atomization device, including: an atomizer being the atomizer as described above; a power supply assembly electrically connected to the atomizer and used for supplying power to the atomization core.

[0017] The beneficial effects of the present application: Different from the prior art, the present application provides an atomization core. The atomization core includes: a liquid guide body having opposite first and second surfaces and a through hole penetrating the first and second surfaces; a blocking member disposed on at least a part of the inner wall surface of the through hole and defining an air outlet channel or cooperating with a part of the inner wall surface of the through hole to form an air outlet channel; and the porosity of the blocking member is less than the porosity of the liquid guide body; a heating member disposed on the first surface of the liquid guide body and used for atomizing the atomization medium to form an aerosol; the aerosol flows out through the air outlet channel. The atomization medium penetrates through the liquid guide body to the surface of the heating member, is heated and atomized to form an aerosol, and the aerosol is supplied to the user for suction through the air outlet channel. By disposing the blocking member on the inner wall surface of the through hole of the liquid guide body and defining an air outlet channel, and the porosity of the blocking member is less than the porosity of the liquid guide body, in this way, the atomization medium inside the liquid guide body will not penetrate into the air outlet channel through the inner wall surface of the through hole, avoiding blockage of the air outlet channel and improving the user experience; the condensate of the aerosol in the air outlet channel will not penetrate into the liquid guide body through the inner wall surface of the through hole, avoiding secondary heating. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of an electronic atomization device provided by an embodiment of the present application;

[0019] Figure 2 is a schematic structural diagram of an atomizer provided by an embodiment of the present application;

[0020] Figure 3a is an overall schematic diagram of an atomization core provided by an embodiment of the present application;

[0021] Figure 3b is provided by an embodiment of the present application Figure 3a A - A cross - sectional view of the atomization core shown;

[0022] Figure 4 is a schematic cross - sectional view of the atomization core provided by an embodiment of the present application along the central axis M direction of the through - hole;

[0023] Figure 5 is Figure 2 a schematic diagram of the air flow path of the atomizer;

[0024] Figure 6 is a schematic cross - sectional view of the atomization core provided by another embodiment along the central axis M direction of the through - hole;

[0025] Figure 7 is a schematic diagram of the sleeve tube of the atomization core provided by another embodiment sleeved on the air flow channel.

[0026] Explanation of the reference numerals in the drawings:

[0027] 10 - Electronic atomization device; 1 - Main body;

[0028] 2 - Atomizer; 20 - Housing; 21 - Atomization core; 211 - Liquid guide; 2111 - First surface; 2112 - Second surface; 2113 - Through - hole; 2114 - Air outlet channel; 212 - Heating element; 2121 - Surrounding part; 2122 - Connecting part; 213 - Blocking part; 2131 - Sleeve part; 2132 - Protruding part; 22 - Liquid storage chamber; 23 - Atomization chamber; 24 - Air flow channel. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] The terms "first", "second", and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise 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 positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. 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 optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0031] Referring to "embodiments" herein means that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0032] Research has found that the main reasons for the poor user experience caused by the central through-hole cylindrical atomization core are as follows:

[0033] Leakage of liquid from the central hole: The matrix of the central through-hole cylindrical atomization core is a porous structure. During the suction process, the viscosity of the atomization liquid in the porous matrix decreases when preheated, making it prone to flow and penetration. Under the action of surface tension and the Venturi effect, it is easy to accumulate on the inner wall of the central hole. For atomization liquids with lower viscosity, when they accumulate on the inner wall of the central hole, they will be mixed into the aerosol during subsequent suction, affecting the suction experience; for atomization liquids with higher viscosity, when the atomization liquid accumulated on the inner wall of the central hole cools down, it will cause blockage of the central hole and even no aerosol will be produced;

[0034] Backflow of the oil film on the heating surface: During the suction process, the atomization liquid in the porous matrix will quickly accumulate on the atomization surface to form an oil film of a certain thickness. For the central through-hole cylindrical atomization core, the oil film on its atomization surface will flow into the central through-hole along with the suctioned smoke under the Venturi effect, also causing leakage or blockage phenomena;

[0035] Condensate reflux: During the suction process, due to the contact between the relatively high-temperature aerosol and the air flow pipeline, there is a temperature difference, which will form a certain amount of condensate in the air flow pipeline. When the condensate accumulates to a certain amount, it generally flows back into the central hole, causing a blockage problem. In addition, the reflux condensate can penetrate into the atomization core through the central hole for secondary atomization. However, the condensate is mainly the atomized liquid after heating and atomization, and its composition is different from the original atomized liquid. Therefore, the aerosol generated by the secondary atomization of the condensate will inevitably affect the suction experience.

[0036] Based on this, the embodiments of the present application provide an atomization core, which effectively improves the effects of liquid leakage from the central hole of the atomization core, reverse flow of the oil film on the heating surface, and condensate reflux, and enhances the user experience.

[0037] The following will describe the present application in detail with reference to the accompanying drawings and embodiments.

[0038] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of an electronic atomization device provided by the embodiments of the present application. In this embodiment, an electronic atomization device 10 is provided. The electronic atomization device 10 is used to atomize an atomization medium to form an aerosol. The electronic atomization device 10 includes an atomizer 2 and a main body 1. The main body 1 includes a power supply component. The atomizer 2 is used to atomize the atomization medium to form an aerosol when powered on. The atomizer 2 can be specifically used in different fields, such as medical, beauty, and recreational inhalation. The main body 1 is electrically connected to the atomizer 2 to supply power to the atomization core 21. The atomization medium can include a liquid matrix or a paste matrix, such as oils, liquid medicines, etc. added with aroma components.

[0039] In this embodiment, as Figure 2 , Figure 2 is an overall schematic diagram of the atomizer provided by the embodiments of the present application. The present application provides an atomizer 2. The atomizer 2 includes a housing 20, an atomization core 21, and a mounting seat (not shown in the figure). The housing 20 includes a mouthpiece (not shown in the figure), an air flow channel 24, a liquid storage chamber 22, and an atomization chamber 23. The liquid storage chamber 22 is used to store the atomization medium, and the atomization chamber 23 is used to provide an atomization space and an aerosol storage space. The air flow channel 24 communicates the atomization core 21 and the mouthpiece. The atomization core 21 communicates the liquid storage chamber 22 and the atomization chamber 23. The atomization medium in the liquid storage chamber 22 penetrates to the atomization surface of the atomization core 21. The atomization surface communicates with the atomization chamber 23 or is exposed to the atomization chamber 23. When powered on, the atomization medium on the atomization surface is atomized to form an aerosol. The aerosol formed by the atomization of the atomization core 21 flows out through the air flow channel 24 to the mouthpiece for the user to inhale. The mounting seat is arranged in the housing 20, and the atomization core 21 is mounted on the mounting seat for electrical connection with the power supply to supply power to the atomization core 21.

[0040] Among them, the specific structure of the atomization core 21 is described below.

[0041] In one embodiment, referring to Figures 3a to 4 , Figure 3a is an overall schematic diagram of the atomization core provided by the embodiments of the present application; Figure 3b is provided by an embodiment of the present application Figure 3a The A-A cross-sectional view of the atomization core shown; Figure 4 is a schematic cross-sectional view of the atomization core provided by the embodiments of the present application along the central axis M direction of the through hole. The present application provides an atomization core 21, and the atomization core 21 includes a liquid guide 211, a heating element 212, and a blocking element 213.

[0042] The liquid guide 211 has opposite first surface 2111 and second surface 2112 along the thickness direction of the liquid guide 211. The liquid guide 211 has a through hole 2113 penetrating the first surface 2111 and the second surface 2112. The first surface 2111 of the liquid guide 211 is the atomization surface, and the heating element 212 is arranged on the atomization surface. The atomization surface is communicated with the atomization chamber 23. The second surface 2112 of the liquid guide 211 is the liquid absorption surface, and the liquid absorption surface is communicated with the liquid storage chamber 22. The atomization medium in the liquid storage chamber 22 penetrates from the liquid absorption surface to the atomization surface through the capillary action of the liquid guide 211, and the atomization medium is atomized on the atomization surface to form an aerosol in the atomization chamber 23. The aerosol enters the air flow channel 24 of the atomizer 2 through the air outlet channel 2114 and is sucked by the user via the nozzle.

[0043] The liquid guide 211 may be a porous matrix. The porous matrix material may be one or a mixture of several materials such as alumina, silica, silicon nitride, silicate, hydroxyapatite, silicon carbide, etc., and the forming method may use slip casting or powder pressing molding, etc. The shape of the porous matrix is not limited and may be a cylinder, a cube, a polyhedron, etc. The porosity of the porous matrix is greater than or equal to 35% and less than or equal to 80%. The average pore diameter of the porous matrix is greater than or equal to 3 μm and less than or equal to 50 μm.

[0044] In one embodiment, the through hole 2113 of the liquid guide 211 may be a cylinder, a prism, etc. The aperture of the through hole 2113 is greater than or equal to 0.1 mm and less than or equal to 5 mm, such as 0.1 mm, 0.3 mm, 0.5 mm, etc. When the aperture is less than 0.1 mm, the through hole can accommodate too little aerosol, which is not conducive to the formation of a large amount of fog. The through hole 2113 of the liquid guide 211 is generally a specially opened hole, rather than the disordered holes of the porous matrix material of the liquid guide 211 itself.

[0045] Specifically, in one embodiment, referring to Figure 3a, the heating element 212 is disposed on the first surface 2111 of the liquid guide 211. The heating element 212 is used to atomize the atomization medium to form an aerosol. The heating element 212 communicates with the atomization chamber 23, and the atomization chamber 23 communicates with the air outlet channel 2114. The aerosol flows out through the air outlet channel 2114. The heating element 212 includes a surrounding portion 2121 and two connecting portions 2122. The surrounding portion 2121 is disposed along the circumferential direction of the through hole 2113. The surrounding portion 2121 may surround part or all of the through hole 2113, and the surrounding portion 2121 may also surround one or more circles of the through hole 2113. The surrounding portion 2121 may be a strip-shaped curve, a strip-shaped broken line, etc. Preferably, the surrounding portion 2121 may be bent multiple times to be serrated or wavy. The two connecting portions 2122 are respectively connected to both ends of the surrounding portion 2121 and are used for electrical connection with an external circuit. The surrounding portion 2121 is used to increase the heating area of the heating element 212. In an atomization surface with the same area, the surrounding portion 2121 can heat and atomize more atomization medium.

[0046] The heating element 212 may be a metal alloy such as iron-chromium alloy, iron-chromium-aluminum alloy, iron-chromium-nickel alloy, chromium-nickel alloy, titanium alloy, stainless steel alloy, Kanthal alloy, precious metal alloy, etc. The heating element 212 can be obtained by one or more of die stamping, casting, mechanical weaving, chemical etching, ion sputtering, electroplating, laminating, and screen printing. The width of the heating element 212 is greater than or equal to 0.05 mm and less than or equal to 3 mm. The heating element 212 may be a dense metal or a porous metal. For example, the pore diameter of the porous metal is greater than or equal to 0.01 mm and less than or equal to 1.00 mm.

[0047] The atomization core 21 can be integrally formed with the heating element 212 and the liquid guide 211 and obtained by sintering; or the liquid guide 211 can be prepared first, and then the heating element 212 can be obtained by one or several of chemical etching, screen printing, direct laminating, etc. The heating element 212 can be laminated or embedded on the surface of the liquid guide 211, or buried inside the liquid guide 211.

[0048] In one embodiment, the thickness of the heating element 212 is greater than or equal to 0.01 mm and less than or equal to 2 mm, such as 0.01 mm, 0.1 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, etc. Thus, combined with the surface tension of the liquid, the atomization medium is more likely to form a liquid film on the first surface 2111. After the atomization medium attached to the heating element 212 is atomized, the atomization medium around the heating element 212 flows in and replenishes the atomization medium on the heating element 212, facilitating the continuous progress of atomization.

[0049] The blocking member 213 is at least partially disposed on at least a part of the inner wall surface of the through hole 2113 of the liquid guide 211, and defines an air outlet channel 2114. Alternatively, the blocking member 213 cooperates with a part of the inner wall surface of the through hole 2113 to form the air outlet channel 2114. The air outlet channel 2114 communicates with the air flow channel 24 of the atomizer 2. The porosity of the blocking member 213 is smaller than the porosity of the liquid guide 211. The blocking member 213 and the through hole 2113 of the liquid guide 211 cooperate to form the air outlet channel 2114. During the suction process, the viscosity of the atomization medium in the liquid guide 211 decreases due to preheating, and it is prone to flow and penetration. By providing the blocking member 213, the atomization medium in the liquid guide 211 will not penetrate into the air outlet channel 2114 through the inner wall surface of the through hole 2113, avoiding the problems of blockage or liquid leakage of the through hole 2113 caused by the accumulation of the atomization medium in the through hole 2113, and also avoiding doping into the aerosol and affecting the aerosol.

[0050] See Figure 5 , Figure 5 is Figure 2 Schematic diagram of the air flow path of the atomizer. At the same time, during the suction process, due to the contact between the relatively high-temperature aerosol and the inner wall surface of the blocking member 213, there is a temperature difference, and partial condensate will be formed on the inner wall surface of the blocking member 213. Due to the reduction of the surface tension of the inner wall surface of the blocking member 213 relative to the inner wall surface of the through hole 2113, the condensate of the aerosol cannot accumulate on the inner wall surface of the blocking member 213, and the condensate flows along the inner wall surface of the blocking member 213 into the atomization chamber 23, avoiding the risk of blockage; in addition, the blocking member 213 can also prevent the condensate in the air outlet channel 2114 from entering the liquid guide 211, avoiding the secondary atomization of the condensate.

[0051] As described above, the blocking member 213 is disposed in the through hole 2113 of the liquid guide 211 of the atomization core 21, and the porosity of the blocking member 213 is smaller than the porosity of the liquid guide 211. The atomization medium in the liquid storage chamber 22 penetrates through the liquid guide 211 to the surface of the heating element 212. After the heating element 212 is powered on, it heats the atomization medium to form an aerosol. The aerosol flows into the air flow channel 24 of the atomizer 2 through the air outlet channel 2114 and is supplied to the user for suction through the mouthpiece. By disposing the blocking member 213 on the inner wall surface of the through hole 2113 of the liquid guide 211 and defining the air outlet channel 2114, and the porosity of the blocking member 213 is smaller than the porosity of the liquid guide 211, in this way, the atomization medium inside the liquid guide 211 will not penetrate into the air outlet channel 2114 through the inner wall surface of the through hole 2113, avoiding the blockage of the air outlet channel 2114 and improving the user experience; the condensate of the aerosol in the air outlet channel 2114 will not penetrate into the liquid guide 211 through the inner wall surface of the through hole 2113 either, avoiding secondary heating.

[0052] Specifically, in one embodiment, the blocking member 213 includes a closed-loop covering layer. The covering layer can be a coating (such as spraying), a deposited layer (such as vapor deposition), or a plating layer (such as electroless plating). The covering layer is a non-self-supporting structure, that is, it cannot exist independently without the support of the inner wall surface of the through-hole 2113. Or the blocking member 213 includes a sleeved tube, and the sleeved tube is a self-supporting structure and can exist independently, preferably made of a hard material. The blocking member 213 is made of a dense and high-temperature resistant material. The material of the blocking member 213 includes but is not limited to one or more of dense metal, dense ceramic, dense glass, and dense polymer, and can also be in the form of a dense tube or a dense coating and plating layer. Preferably, the blocking member 213 covers the entire inner wall surface of the through-hole 2113 and encloses an air outlet channel 2114. In this way, the blocking member 213 can effectively block the atomization medium in the guiding liquid 211 from flowing into the air outlet channel 2114, reducing the risk of blockage of the air outlet channel 2114.

[0053] In one embodiment, referring to Figure 3a and Figure 3b , the blocking member 213 is a sleeved tube, and the sleeved tube is sleeved in the through-hole 2113 and is arranged in contact with the inner wall surface of the through-hole 2113. As Figure 3b shown, the sleeved tube includes a sleeved portion 2131 and a protruding portion 2132 connected axially. The sleeved portion covers the entire inner wall surface of the through-hole 2113, and the protruding portion 2132 protrudes from the first surface 2111 of the guiding liquid 211 along the axial direction Y of the sleeved tube. In this way, the risk of aggregation of the atomization medium caused by the liquid film on the first surface 2111 (i.e., the atomization surface) of the guiding liquid 211 flowing into the through-hole 2113 due to the Venturi effect or along the direction of the air flow can be reduced, thereby effectively reducing the risk of blockage or liquid leakage of the through-hole 2113 during the suction process. Similarly, in some embodiments, if the sleeved portion covers a part of the inner wall surface of the through-hole 2113, a similar effect can also be achieved.

[0054] Referring to Figure 3b and Figure 4 , along the axial direction Y of the sleeved tube, the length dimension L1 of the protruding portion 2132 is greater than the length dimension L2 of the heating element 212. In this way, the aggregation of the atomization medium caused by the liquid film on the heating element 212 not being able to flow into the through-hole 2113 due to the Venturi effect or along the direction of the air flow can be reduced, thereby effectively reducing the problems of blockage or liquid leakage of the through-hole 2113 during the suction process; and the risk of the condensate in the air outlet channel 2114 flowing back to the heating element 212 and causing secondary atomization of the condensate can be reduced.

[0055] Along the axial direction Y of the sleeved tube, the length L1 of the protruding portion 2132 of the sleeved tube is not greater than 5 mm. If the protruding portion 2132 is too long, it is likely to affect the space of the atomization chamber 23 communicating with the first surface 2111, which is not conducive to the storage and flow of the aerosol generated in the atomization chamber 23.

[0056] In one embodiment, referring to Figure 6 , Figure 6 is a schematic cross-sectional view of an atomization core provided by another embodiment along the central axis M direction of the through hole. The blocking member 213 is in contact with the heating member 212. Since the porosity of the blocking member 213 is less than the porosity of the liquid guide 211 and the thermal conductivity of the blocking member 213 is better than the thermal conductivity of the liquid guide 211, thus, the blocking member 213 is more likely to conduct the heat of the heating member 212 to the atomization medium near the hole wall of the through hole 2113 of the liquid guide 211, which can preheat some of the atomization medium close to the blocking member 213, facilitating subsequent atomization and improving energy utilization efficiency.

[0057] In one embodiment, the wall thickness of the blocking member 213 is greater than or equal to 0.01 mm and less than or equal to 2 mm, such as 0.01 mm, 0.1 mm, 0.15 mm, 2 mm, etc. If the wall thickness is too thick, it will reduce the cross-sectional area of the through hole 2113 and the air flow rate of the through hole 2113, which is not conducive to the atomization effect.

[0058] In one embodiment, referring to Figure 7 , Figure 7 is a schematic diagram of a sleeve tube of an atomization core sleeved on an air flow channel provided by another embodiment. A part of the side wall of the sleeve tube protrudes from the second surface 2112 of the liquid guide 211 along the axial direction Y. In this way, the sleeve tube is convenient to be sleeved on the air flow channel 24 and connected to the air flow channel 24.

[0059] The present application provides an atomization core 21. The atomization core 21 includes: a liquid guide 211 having opposite first and second surfaces 2111 and 2112 and a through hole 2113 penetrating the first and second surfaces 2111 and 2112; a blocking member 213 disposed on at least a part of the inner wall surface of the through hole 2113 and defining an air outlet channel 2114 or cooperating with a part of the inner wall surface of the through hole 2113 to form the air outlet channel 2114; and the porosity of the blocking member 213 is less than that of the liquid guide 211; a heating member 212 disposed on the first surface 2111 of the liquid guide 211 for atomizing an atomization medium to form an aerosol; the aerosol flows out through the air outlet channel 2114. The atomization medium in the liquid storage chamber 22 penetrates through the liquid guide 211 to the surface of the heating member 212. After the heating member 212 is powered on, it heats the atomization medium to form an aerosol, and the aerosol flows into the air flow channel 24 of the atomizer 2 through the air outlet channel 2114 and is supplied to the user for suction through the mouthpiece. By disposing the blocking member 213 on the inner wall surface of the through hole 2113 of the liquid guide 211 and defining the air outlet channel 2114, and the porosity of the blocking member 213 is less than that of the liquid guide 211, in this way, the atomization medium inside the liquid guide 211 will not penetrate into the air outlet channel 2114 through the inner wall surface of the through hole 2113, avoiding blockage of the air outlet channel 2114 and improving the user experience; the condensate of the aerosol in the air outlet channel 2114 will not penetrate into the liquid guide 211 through the inner wall surface of the through hole 2113, avoiding secondary heating.

[0060] The above are only the embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. An atomizing core, characterized in that, Comprising: A liquid guide having opposite first and second surfaces and a through-hole penetrating the first and second surfaces; A blocking member disposed on at least a partial inner wall surface of the through-hole and defining an air outlet channel or cooperating with a partial inner wall surface of the through-hole to form an air outlet channel; and the porosity of the blocking member is less than the porosity of the liquid guide; A heating member disposed on the first surface of the liquid guide for atomizing an atomization medium to form an aerosol; the aerosol flows out through the air outlet channel.

2. The atomizing core according to claim 1, characterized in that, The blocking member includes a closed-loop covering layer or a sleeved tube, the blocking member covers the entire inner wall surface of the through-hole, and encloses to form the air outlet channel.

3. The atomizing core according to claim 2, characterized in that, The blocking member is the sleeved tube, the sleeved tube is sleeved in the through-hole and is arranged in contact with the inner wall surface of the through-hole; the sleeved tube includes an axially connected sleeved portion and a protruding portion, the sleeved portion covers at least a partial inner wall surface of the through-hole, and the protruding portion protrudes axially from the first surface of the liquid guide.

4. The atomizing core according to claim 3, characterized in that, Along the axial direction of the sleeved tube, the length dimension of the protruding portion is greater than the length dimension of the heating member.

5. The atomizing core according to claim 4, characterized in that, The thickness of the heating member is greater than or equal to 0.01 mm and less than or equal to 2 mm; Along the axial direction of the sleeved tube, the length of the protruding portion of the sleeved tube is not greater than 5 mm.

6. The atomizing core according to any one of claims 1-5, characterized in that, The blocking member is in contact with the heating member.

7. The atomizing core according to any one of claims 2-5, characterized in that, The aperture of the through-hole is greater than or equal to 0.1 mm and less than or equal to 5 mm; the wall thickness of the blocking member is greater than or equal to 0.01 mm and less than or equal to 2 mm.

8. The atomizing core according to any one of claims 1-5, characterized in that, The material of the blocking member includes one or more of dense metal, dense ceramic, dense glass and dense polymer.

9. The atomizing core according to any one of claims 1-5, characterized in that, The heating member includes a surrounding portion and two connecting portions; the surrounding portion is arranged along the circumferential direction of the through-hole and is serrated; the two connecting portions are respectively connected to both ends of the surrounding portion for electrically connecting with an electrode.

10. The atomizing core according to any one of claims 3-5, characterized in that, A partial side wall of the sleeved tube protrudes axially from the second surface of the liquid guide.

11. An atomizer, characterized in that, Comprising: A housing having a liquid storage chamber and an atomization chamber, the liquid storage chamber being used for storing an atomization medium; An atomization core disposed in the housing and being the atomization core according to any one of claims 1-10; Wherein, the heating member and the air outlet channel of the atomization core are directly communicated with the atomization chamber.

12. An electronic atomization device, characterized in that, Comprising: An atomizer being the atomizer according to claim 11; A power supply assembly electrically connected to the atomizer for supplying power to the atomization core.

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