Electronic atomization device

Abstract

The utility model discloses an electronic atomization device which comprises a shell, a liquid storage cavity, an atomization channel and a liquid supply device. The atomization assembly is at least partially arranged in the atomization channel and is in fluid communication with the liquid storage cavity; at least part of the sealing structure is arranged between the atomization assembly and the liquid storage cavity, and the sealing structure is used for limiting atomized liquid in the liquid storage cavity to flow to the atomization assembly. Due to the fact that the fluid impermeable sealing structure is arranged between the atomization assembly and the liquid storage cavity, before the electronic atomization device is used, the sealing structure can limit atomized liquid in the liquid storage cavity to flow to the atomization assembly, and therefore the atomized liquid in the liquid storage cavity can be prevented from seeping out through the atomization assembly. Wherein the sealing structure is a structure capable of being decomposed by heating, when a user uses the electronic atomization device for the first time, the atomization assembly used for heating the atomization liquid supplied by the atomization liquid storage cavity can heat and decompose the sealing structure, so that the limitation of the sealing structure is relieved, and the electronic atomization device can be normally used.

Description

Technical Field

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

[0002] As a substitute for traditional cigarettes, the electronic atomizer device usually includes a hollow shell and a power supply device and an atomizer assembly arranged inside the shell. The atomizer assembly usually includes an oil guide body and a heating element. The power supply device is used to supply power to the heating element. The shell is also provided with an atomizer channel and a liquid storage chamber for supplying atomized liquid to the atomizer assembly (the side wall of the atomizer channel has an oil inlet hole connected to the liquid storage chamber, the atomizer assembly is arranged in the atomizer channel and located at the oil inlet hole, and the oil inlet hole is used to guide the atomized liquid in the liquid storage chamber to the oil guide body), the oil guide body is used to guide the atomized liquid supplied by the liquid storage chamber to the heating element, and the heating element is used to heat the atomized liquid supplied by the atomizer storage chamber to form an inhalable aerosol leading to the atomizer channel. Compared with traditional cigarettes, the electronic atomizer device has the advantages of no tar, no ash, no open flame, etc., which can effectively avoid the various harmful substances produced by traditional cigarettes when they are ignited.

[0003] Among them, the assembled electronic atomization device needs to inject atomizing liquid into the liquid storage chamber. During this process and the subsequent storage and transportation links, since the atomizing liquid in the liquid storage chamber can contact the oil guide body through the oil inlet hole, there is a situation where the atomizing liquid overflows from the surface of the oil guide body and forms leakage that flows into the atomization channel. Therefore, there is a problem that the leakage flows to the electronic components, causing damage to electronic components such as circuit boards or microphones and making the electronic atomization device unable to work normally. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an electronic atomization device.

[0005] According to an embodiment of the present application, the electronic atomization device includes: a shell, wherein a liquid storage chamber and an atomization channel are arranged inside the shell; an atomization assembly, wherein the atomization assembly is at least partially arranged in the atomization channel and is fluidically connected to the liquid storage chamber; a sealing structure, wherein the sealing structure is at least partially arranged between the atomization assembly and the liquid storage chamber, the sealing structure is a structure that is impermeable to fluid and decomposable by heating, and the sealing structure is used to limit the atomized liquid in the liquid storage chamber from flowing toward the atomization assembly.

[0006] The electronic atomization device according to the embodiment of the present application has at least the following beneficial effects: since a fluid-impermeable sealing structure is provided between the atomization assembly and the liquid storage chamber, before the electronic atomization device is used, the sealing structure can limit the atomized liquid in the liquid storage chamber from flowing to the atomization assembly, thereby preventing the atomized liquid in the liquid storage chamber from leaking out through the atomization assembly. Wherein, the sealing structure is a heat-decomposable structure, and when the user uses the electronic atomization device for the first time, the atomization assembly used to heat the atomized liquid supplied to the atomization liquid storage chamber can heat and decompose the sealing structure to remove the restriction of the sealing structure, so that the electronic atomization device can be used normally.

[0007] According to some embodiments of the present application, the atomization assembly includes an oil guide body and a heating body, the oil guide body having a liquid absorption surface, an atomization surface, and a connecting surface connecting the liquid absorption surface and the atomization surface, the heating body is arranged on the atomization surface, wherein the sealing structure is a sealing coating, and the sealing coating is arranged on the liquid absorption surface.

[0008] According to some embodiments of the present application, the oil-conducting body is made of a hard and / or soft porous material.

[0009] According to some embodiments of the present application, the oil-conducting body includes a hard porous body and a soft porous body, one side of the hard porous body is the atomization surface, the soft porous body is arranged on the side of the hard porous body facing away from the atomization surface, and the side of the soft porous body facing away from the hard porous body is the liquid absorption surface.

[0010] According to some embodiments of the present application, an atomization bracket is provided inside the shell, the atomization channel is formed on the atomization bracket, the atomization bracket and the inner wall of the shell are enclosed to form the liquid storage chamber, the atomization bracket is provided with an oil inlet hole that connects the liquid storage chamber and the atomization channel, the atomization assembly has an atomization surface and a liquid absorption surface, the atomization surface is exposed in the atomization channel, the liquid absorption surface is connected to the liquid storage chamber fluid through the oil inlet hole, wherein the sealing structure is a sealing coating, the sealing coating is provided at the oil inlet hole and is used to seal the oil inlet hole, and the sealing coating and the projection of the oil inlet hole on the liquid absorption surface overlap.

[0011] According to some embodiments of the present application, the atomization support is a tubular structure, and the lumen inside the atomization support forms the atomization channel.

[0012] According to some embodiments of the present application, the sealing coating is disposed on an outer peripheral side wall of the atomizing support, and / or the sealing coating is disposed on an inner peripheral side wall of the atomizing support.

[0013] According to some embodiments of the present application, a capillary gap is formed between the sealing coating and a portion of the edge of the oil inlet hole, or a capillary hole is provided on the sealing coating.

[0014] According to some embodiments of the present application, a plurality of oil inlet holes are provided on the atomizing bracket, and the total cross-sectional area of ​​all the oil inlet holes is less than or equal to 50 mm. 2 .

[0015] According to some embodiments of the present application, the decomposition temperature of the sealing coating is 60°C to 120°C.

[0016] According to some embodiments of the present application, the thickness of the sealing coating is less than or equal to 0.5 mm.

[0017] According to some embodiments of the present application, the sealing coating is made of PVB or sodium alginate.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a cross-sectional schematic diagram of an electronic atomization device according to an embodiment of the present application;

[0021] Figure 2 yes Figure 1 A partial enlarged schematic diagram in the middle;

[0022] Figure 3 It is a structural schematic diagram of an atomization component in an electronic atomization device according to an embodiment of the present application;

[0023] Figure 4 It is a schematic diagram of the structure of the atomization bracket in the electronic atomization device of one embodiment of the present application when the sealing coating is not coated;

[0024] Figure 5 It is a structural schematic diagram of an electronic atomization device in an embodiment of the present application when an atomization bracket is coated with a sealing coating;

[0025] Figure 6 It is a structural schematic diagram of an atomization bracket in an electronic atomization device of another embodiment of the present application when a sealing coating is applied.

[0026] Reference numerals:

[0027] Sealing coating a, capillary liquid gap b, housing 100 , liquid storage chamber 200 , oil guide body 300 , hard porous body 310 , soft porous body 320 , atomizing bracket 400 , atomizing channel 410 , oil inlet hole 420 . DETAILED DESCRIPTION

[0028] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0029] In the description of the present application, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present application.

[0030] In the description of this application, if the words "some", "greater than", "less than", "exceed", "above", "below", "within" etc. appear, "some" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number, and "above", "below", "within", etc. are understood to include the number.

[0031] In the description of this application, if the words "first", "second", etc. appear, they are only used to distinguish technical features and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0033] Reference Figures 1 to 6 According to an embodiment of the present application, the electronic atomization device includes a shell 100, an atomization assembly and a sealing structure.

[0034] Specifically, a liquid storage chamber 200 and an atomization channel 410 are provided inside the shell 100. The atomization component is at least partially disposed in the atomization channel 410 and is fluidly connected to the liquid storage chamber 200 so that the atomized liquid in the liquid storage chamber 200 can flow to the atomization component. The atomization component is used to heat the atomized liquid supplied by the atomization liquid storage chamber 200 to form an inhalable aerosol leading to the atomization channel 410. The sealing structure is at least partially disposed between the atomization component and the liquid storage chamber 200. The sealing structure is a structure that is impermeable to fluid and decomposable by heating. The sealing structure is used to limit the atomized liquid in the liquid storage chamber 200 from flowing to the atomization component.

[0035] Since a fluid-impermeable sealing structure is provided between the atomizing assembly and the liquid storage chamber 200, before the electronic atomizing device is used, the sealing structure can limit the atomized liquid in the liquid storage chamber 200 from flowing to the atomizing assembly, thereby preventing the atomized liquid in the liquid storage chamber 200 from leaking out through the atomizing assembly. The sealing structure is a heat-decomposable structure, and when the user uses the electronic atomizing device for the first time, the atomizing assembly used to heat the atomized liquid supplied by the atomizing liquid storage chamber 200 can heat and decompose the sealing structure to remove the restriction of the sealing structure, so that the electronic atomizing device can be used normally.

[0036] Reference Figure 3 In some of the embodiments, the atomization assembly includes an oil-conducting body 300 and a heating element (not shown in the figure) disposed on the oil-conducting body 300. The oil-conducting body 300 has a liquid absorption surface, an atomization surface, and a connection surface connecting the liquid absorption surface and the atomization surface. The heating element is disposed on the atomization surface of the oil-conducting body 300. Among them, the sealing structure is a sealing coating a, and the sealing coating a is disposed on the liquid absorption surface of the oil-conducting body 300. Before the electronic atomization device is used, the sealing coating a can prevent the oil-conducting body 300 from absorbing the atomized liquid, thereby preventing the atomized liquid in the liquid storage chamber 200 from leaking out through the oil-conducting body 300 of the atomization assembly. Specifically, the liquid absorption surface is a side of the oil-conducting body 300 that is used to contact and absorb the atomized liquid in the liquid storage chamber 200, and the atomization surface is a side that forms an aerosol (generally a side provided with a heating element or in contact with the heating element).

[0037] It should be noted that, in some embodiments, the oil-conducting body 300 is made of hard and soft porous materials. Of course, the oil-conducting body 300 may also be made of only hard porous materials or only soft porous materials, which is not limited here.

[0038] Reference Figure 2 and Figure 3In some embodiments, the oil-conducting body 300 includes a hard porous body 310 and a soft porous body 320, one side of the hard porous body 310 is an atomizing surface, the soft porous body 320 is arranged on the side of the hard porous body 310 that is not facing the atomizing surface, and the side of the soft porous body 320 that is not facing the hard porous body 310 is a liquid absorbing surface. Among them, the hard porous body 310 is conducive to improving the structural strength of the oil-conducting body 300, and at the same time, the oil-conducting body 300 has a certain support, which is convenient for setting a heating element. In addition, the soft porous body 320 is conducive to improving the oil-conducting ability of the oil-conducting body 300.

[0039] Specifically, the hard porous body 310 may be porous ceramic or porous glass, and the soft porous body 320 may be cotton, which is not limited here.

[0040] Reference Figure 2 and Figure 3 In some of the embodiments, the oil guiding body 300 is a columnar structure, and the oil guiding body 300 has an avoidance channel running through both ends along its own axis, the inner surface of the avoidance channel is an atomizing surface, and the outer peripheral surface of the oil guiding body 300 is a liquid absorbing surface.

[0041] It should be noted that, in some other embodiments, the oil-conducting body 300 may also be a rectangular block structure, which is not limited here.

[0042] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 In some embodiments, an atomizing bracket 400 is provided inside the housing 100, an atomizing channel 410 is formed on the atomizing bracket 400, the outer peripheral surface of the atomizing bracket 400 and the inner wall of the housing 100 enclose a liquid storage chamber 200, an oil inlet hole 420 is provided on the atomizing bracket 400 to connect the liquid storage chamber 200 and the atomizing channel 410, the atomizing component has an atomizing surface and a liquid suction surface, the atomizing surface of the atomizing component is exposed in the atomizing channel 410, and the liquid suction surface of the atomizing component is in fluid communication with the liquid storage chamber 200 through the oil inlet hole 420. Among them, the sealing structure is a sealing coating a, the sealing coating a is provided at the oil inlet hole 420 and is used to block the oil inlet hole 420, and the projections of the sealing coating a and the oil inlet hole 420 on the liquid suction surface of the atomizing component overlap. The oil inlet hole 420 is sealed by the sealing coating a. Before the electronic atomization device is used, the sealing coating a can prevent the atomized liquid in the liquid storage chamber 200 from flowing to the oil guide body 300 of the atomization assembly through the oil inlet hole 420, thereby preventing the atomized liquid in the liquid storage chamber 200 from leaking through the oil guide body 300 of the atomization assembly.

[0043] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5In some embodiments, the atomizer bracket 400 is a tubular structure, and the tubular cavity inside the atomizer bracket 400 forms an atomization channel 410. The tubular structure refers to a columnar structure with a hollow interior. Compared with the atomizer bracket 400 with a special-shaped structure, the atomizer bracket 400 with a tubular structure has a simple structure and is easy to process, and is also conducive to reducing the difficulty of assembling the atomizer bracket 400. Specifically, the outer contour shape of the cross section of the atomizer bracket 400 can be circular, rectangular or other polygonal, which is not limited here.

[0044] In addition, the outer contour shape of the cross section of the atomization channel 410 can be circular, rectangular or other polygonal, which is not limited here.

[0045] Reference Figure 2 and Figure 5 In some of the embodiments, the sealing coating a is disposed on the outer peripheral side wall of the atomizing bracket 400, which facilitates the processing of the sealing coating a and helps to improve the processing efficiency.

[0046] It should be noted that in some other embodiments, the sealing coating a may also be disposed on the inner peripheral side wall of the atomizing bracket 400, which is not limited here. The sealing coating a is disposed on the inner peripheral side wall of the atomizing bracket 400 so that the sealing coating a is closer to the heating element of the atomizing component, so that when the user uses the electronic atomizing device for the first time, the heating element of the atomizing component can quickly heat and decompose the sealing coating a.

[0047] It should be noted that in some other embodiments, a sealing coating a is provided on the outer peripheral side wall and the inner peripheral side wall of the atomizing bracket 400 at the positions corresponding to the oil inlet hole 420, which is not limited here. Among them, the sealing coating a for blocking the oil inlet hole 420 is provided on the outer peripheral side wall and the inner peripheral side wall of the atomizing bracket 400, which is conducive to improving the sealing effect of the sealing coating a.

[0048] It should be noted that, in some other embodiments, the sealing coating a may also be partially or completely located in the oil inlet hole 420 and bonded to the inner wall of the oil inlet hole 420, which is not limited here.

[0049] Reference Figure 6In some of the embodiments, a capillary liquid gap b is formed between the sealing coating a and a portion of the edge of the oil inlet hole 420. Of course, a capillary liquid hole can also be opened on the sealing coating a, which is not limited here. Since the atomized liquid can flow to the atomizing component only after the sealing coating a is heated and decomposed, the heating element of the atomizing component will be in a low-temperature dry-burning state before the sealing coating a is heated and decomposed by the heating element of the atomizing component. By providing the above-mentioned capillary liquid gap b or capillary liquid hole, a small amount of atomized liquid can flow to the oil guide body 300 of the atomizing component before the sealing coating a is heated and decomposed, which is beneficial to avoid the problem of dry-burning of the heating element of the atomizing component.

[0050] It should be noted that in some of the embodiments, the atomizer bracket 400 is a hard structure, so that the atomizer bracket 400 has a certain structural strength, which can prevent the atomization channel 410 from narrowing or closing due to the deformation of the atomizer bracket 400. In addition, the atomizer bracket 400 with a hard structure is easy to fix, which helps to reduce the difficulty of assembling the atomizer bracket 400.

[0051] It should be noted that, in some of the embodiments, the atomizer bracket 400 is made of metal material, such as stainless steel, so that the atomizer bracket 400 has higher reliability and stability.

[0052] It should be noted that in some embodiments, a plurality of oil inlet holes 420 are provided on the atomizing bracket 400, and the total cross-sectional area of ​​all the oil inlet holes 420 is less than or equal to 50 mm. 2 , so that the area of ​​the sealing coating a to be applied does not need to be too large, which is conducive to preventing the applied sealing coating a from being damaged or falling off, thereby improving the reliability and stability of the sealing coating a. As an example, the total cross-sectional area of ​​all the oil inlet holes 420 can be 40mm 2 , 30mm 2 , 20mm 2 or 10mm 2 .

[0053] It should be noted that, in some of the embodiments, the number of oil inlet holes 420 on the atomizer bracket 400 may be one or more, wherein the cross-section of the oil inlet hole 420 may be a regular shape such as a circle, a semicircle, a polygon (such as a rectangle), or an irregular shape. As an example, taking the cross-section of the oil inlet hole 420 as a circle, the diameter of the oil inlet hole 420 may be less than or equal to 5 mm, such as 4 mm, 3 mm, or 2 mm. Taking the cross-section of the oil inlet hole 420 as a rectangle as an example, the length and width of the oil inlet hole 420 are 6 mm×5 mm, 5 mm×4 mm, 3 mm×2 mm, 6 mm×2 mm, etc.

[0054] It should be noted that in some of the embodiments, the decomposition temperature of the sealing coating a is lower than a preset value. When the user uses the electronic atomization device for the first time, the sealing coating a can be quickly heated and decomposed by the heating element of the atomization component, thereby preventing the sealing coating a from obstructing the atomized liquid in the liquid storage chamber 200 from flowing to the oil guide body 300 of the atomization component through the oil inlet hole 420, that is, the sealing coating a can quickly release the blockage of the oil inlet hole 420, which is beneficial to prevent the heating element of the atomization component from dry burning. Specifically, the decomposition temperature of the sealing coating a is lower than the atomization temperature at which the heating element of the atomization component heats the atomized liquid to atomize it. As an example, the atomization temperature of the atomized liquid can be 2 to 3 times the decomposition temperature of the sealing coating a.

[0055] It should be noted that, in some of the embodiments, the decomposition temperature of the sealing coating a is 60°C to 120°C. Specifically, the decomposition temperature of the sealing coating a can be 60°C, 120°C, 100°C, or other values ​​within the above numerical range, which are not limited here.

[0056] It should be noted that in some of the embodiments, the thickness of the sealing coating a is less than or equal to 0.5 mm, so that the sealing coating a can be better adhered to the atomizer bracket 400. If the thickness of the sealing coating a is greater than 0.5 mm, it will not only increase the processing cycle of the sealing coating a, but also increase the difficulty of controlling the dimensional process, and may increase the difficulty of assembling related components.

[0057] It should be noted that in some of the embodiments, the sealing coating a is made of PVB (polyvinyl butyral), which is not easily soluble in water and is easy to form a film. The sealing coating a made of PVB can be decomposed when heated to 60°C to 120°C. In addition, PVB is a food-grade material, which is non-toxic, harmless and odorless, and will not affect the user's health as well as the taste and experience during smoking.

[0058] It should be noted that, in some other embodiments, the sealing coating a may also be made of sodium alginate, which is not limited here.

[0059] It should be noted that, in some of the embodiments, the processing of the sealing coating a is as follows:

[0060] One of the PVB powder and the sodium alginate powder is mixed with ethanol to prepare a coating material that can be decomposed by heating, wherein the mass ratio of the powder to the ethanol is n:5, wherein 1≤n≤3;

[0061] Providing a target component, and applying the configured coating material to a surface of the target component to form a sealing coating a;

[0062] The applied sealing coating a is dried by standing or baking.

[0063] Specifically, ethanol has high volatility, so that the coating material coated on the target component can be dried quickly in a short time, which is beneficial to improve the processing efficiency of the sealing coating A. The mass ratio of the powder to ethanol can be 1:5, 2:5, 3:5, or other ratios within the above ratio range, which is not limited here.

[0064] In addition, the above-mentioned coating material can be configured with an ethanol solution with a concentration greater than or equal to 95%. When the above-mentioned coating material is configured with an ethanol solution with a concentration greater than or equal to 95%, due to the low water content in the ethanol solution, the drying time of the coating material coated on the target component can be further shortened, which is beneficial to further improve the processing efficiency of the sealing coating a.

[0065] It should be noted that, in some of the embodiments, anhydrous ethanol may be used to prepare the above-mentioned coating material. Of course, absolute ethanol may also be used to prepare the above-mentioned coating material, which is not limited here.

[0066] In the description of this specification, if the description involves reference terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" and "some examples", it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0067] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electronic atomization device, characterized in that: include: A shell, wherein a liquid storage cavity and an atomization channel are arranged inside the shell; an atomizing assembly, the atomizing assembly being at least partially disposed in the atomizing channel and being in fluid communication with the liquid storage chamber; A sealing structure, wherein the sealing structure is at least partially disposed between the atomizing assembly and the liquid storage chamber, the sealing structure is a structure that is impermeable to fluid and decomposable by heating, and is used to restrict the atomized liquid in the liquid storage chamber from flowing toward the atomizing assembly.

2. The electronic atomization device according to claim 1, characterized in that: The atomization assembly includes an oil guide body and a heating body, the oil guide body has a liquid absorption surface, an atomization surface and a connecting surface connecting the liquid absorption surface and the atomization surface, the heating body is arranged on the atomization surface, wherein the sealing structure is a sealing coating, and the sealing coating is arranged on the liquid absorption surface.

3. The electronic atomization device according to claim 2, characterized in that: The oil-conducting body is made of hard and / or soft porous material.

4. The electronic atomization device according to claim 3, characterized in that: The oil-conducting body comprises a hard porous body and a soft porous body, one side of the hard porous body is the atomization surface, the soft porous body is arranged on the side of the hard porous body facing away from the atomization surface, and the side of the soft porous body facing away from the hard porous body is the liquid absorption surface.

5. The electronic atomization device according to claim 1, characterized in that: An atomizing bracket is arranged inside the shell, the atomizing channel is formed on the atomizing bracket, the atomizing bracket and the inner wall of the shell are enclosed to form the liquid storage cavity, the atomizing bracket is provided with an oil inlet hole which connects the liquid storage cavity and the atomizing channel, the atomizing assembly has an atomizing surface and a liquid absorption surface, the atomizing surface is exposed in the atomizing channel, the liquid absorption surface is in fluid communication with the liquid storage cavity through the oil inlet hole, wherein the sealing structure is a sealing coating, the sealing coating is arranged at the oil inlet hole and is used to block the oil inlet hole, and the sealing coating and the projection of the oil inlet hole on the liquid absorption surface overlap.

6. The electronic atomization device according to claim 5, characterized in that: The atomizing support is a tubular structure, and the tubular cavity inside the atomizing support forms the atomizing channel.

7. The electronic atomization device according to claim 6, characterized in that: The sealing coating is arranged on the outer peripheral side wall of the atomizing support, and / or the sealing coating is arranged on the inner peripheral side wall of the atomizing support.

8. The electronic atomization device according to claim 7, characterized in that: A capillary liquid gap is formed between the sealing coating and a portion of the edge of the oil inlet hole, or a capillary liquid hole is opened on the sealing coating.

9. The electronic atomization device according to claim 5, characterized in that: The atomizing bracket is provided with a plurality of oil inlet holes, and the total cross-sectional area of ​​all the oil inlet holes is less than or equal to 50 mm 2 .

10. The electronic atomization device according to any one of claims 2 to 9, characterized in that: The decomposition temperature of the sealing coating is 60°C to 120°C.

11. The electronic atomization device according to any one of claims 2 to 9, characterized in that: The thickness of the sealing coating is less than or equal to 0.5 mm.

12. The electronic atomization device according to any one of claims 2 to 9, characterized in that: The sealing coating is made of PVB or sodium alginate.

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