Electronic atomization device

Abstract

The invention discloses an electronic atomization device. The electronic atomization device comprises a shell with an opening in the top; the circumferential heating body is arranged in the shell; the clamping structure is arranged in the shell, the clamping structure and the circumferential heating body define a containing cavity, the clamping structure comprises an elastic closed cavity and a rigid heat conduction shell wrapping the elastic closed cavity, the side, facing the containing cavity, of the elastic closed cavity is provided with a protruding part, and the side, facing the containing cavity, of the rigid heat conduction shell is provided with an avoiding through hole; the protruding part is contained in the avoiding through hole, the elastic closed cavity is filled with filler, the circumferential heating body can heat the filler, the filler can expand after being heated so that the protruding part can stretch into the containing cavity from the avoiding through hole, and the filler can restore to the original shape after being cooled. The protruding part extending into the containing cavity can retract into the avoiding through hole. According to the clamping structure, the aerosol generating product can be automatically clamped when a user smokes the aerosol generating product, and meanwhile clamping of the aerosol generating product can be automatically relieved after the user smokes the aerosol generating product.

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] Traditional electronic atomization devices usually include a main structure and a heating element assembled in the main structure. The main structure has a receiving cavity for receiving an aerosol-generating product. The heating element can heat the aerosol-generating product contained in the receiving cavity to generate an inhalable aerosol. Specifically, traditional electronic atomization devices usually use a central heating element (needle-shaped or sheet-shaped) or a circumferential heating element (tubular) to heat the aerosol-generating product. The central heating element has the advantages of low energy consumption and fast heating speed, and the circumferential heating element has the advantages of easy plugging and unplugging of aerosol-generating products and no need for cleaning. Among them, in order to prevent the aerosol-generating product contained in the receiving cavity from loosening or accidentally detaching from the receiving cavity when the user inhales, the traditional electronic atomization device is usually provided with a clamping structure for fixing the aerosol-generating product. The traditional clamping structure is usually a plurality of protrusions arranged at intervals and used to clamp the aerosol-generating product. The aerosol-generating product is fixed by the friction between the protrusion and the aerosol-generating product. The protrusion used to clamp the aerosol-generating product can be a rigid protrusion or a flexible protrusion.

[0003] However, after the user has finished inhaling, the aerosol generating product contained in the accommodating cavity needs to be pulled out and replaced with a new aerosol generating product. During this process, the protrusion used to clamp the aerosol generating product will hinder the aerosol generating product from being inserted into the accommodating cavity, making it difficult for the user to smoothly insert the aerosol generating product into the accommodating cavity. As a result, the aerosol generating product is easily deformed due to external force during the insertion into the accommodating cavity, and the deformed aerosol generating product is difficult to fit the circumferential heating element well, resulting in the electronic atomization device using the circumferential heating element being difficult to uniformly heat the deformed aerosol generating product, thereby affecting the user's inhalation experience; in addition, the protrusion used to clamp the aerosol generating product will be worn due to repeated insertion and removal of the aerosol generating product, causing the protrusion used to clamp the aerosol generating product to fail after long-term use. Summary of the invention

[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 having a clamping structure that applies the principle of thermal expansion and contraction. When the user inhales, the clamping structure can automatically clamp the aerosol generating product contained in the containing cavity under the heating of the circumferential heating body. After the user finishes inhaling, the clamping structure can automatically release the clamping of the aerosol generating product contained in the containing cavity after cooling.

[0005] According to the embodiment of the present application, the electronic atomization device includes: a shell, which is a top-opening structure; a circumferential heating element, which is tubular, is arranged in the shell and is used to heat the aerosol generating product; a clamping structure, which is arranged in the shell, and the clamping structure and the circumferential heating element are combined to form a accommodating cavity with a top opening for accommodating the aerosol generating product, and the clamping structure includes an elastic sealed cavity and a rigid heat-conductive shell, the rigid heat-conductive shell is coated on the outside of the elastic sealed cavity, and the elastic sealed cavity is provided with a convex side facing the accommodating cavity. The rigid heat-conductive shell is provided with a avoidance through hole for accommodating the protrusion on one side facing the accommodating cavity, the protrusion is accommodated in the avoidance through hole, the interior of the elastic sealed cavity is filled with a filler, the circumferential heating element can heat the elastic sealed cavity to heat the filler, the filler can expand after heating, so that the protrusion can extend into the accommodating cavity through the avoidance through hole and clamp the aerosol generating product accommodated in the accommodating cavity, and the filler can return to its original state after cooling, so that the protrusion extending into the accommodating cavity can be retracted into the avoidance through hole.

[0006] According to the electronic atomization device of the embodiment of the present application, there are at least the following beneficial effects: when the user inhales, the circumferential heating element can not only heat the aerosol generating product contained in the accommodating cavity, but also heat the clamping structure, so that the filler filled in the elastic closed cavity expands. At this time, since the deformation of the elastic closed cavity is limited by the rigid heat-conductive shell, the protrusion can be driven to extend from the avoidance through hole into the accommodating cavity and clamp the aerosol generating product contained in the accommodating cavity, thereby preventing the aerosol generating product contained in the accommodating cavity from loosening or accidentally detaching from the accommodating cavity when the user inhales; after the user finishes inhaling, the circumferential heating element stops heating, and at this time the clamping structure gradually cools down to restore the filler filled in the elastic closed cavity to its original state, so that the protrusion extending into the accommodating cavity retracts into the avoidance through hole and releases the clamping of the aerosol generating product contained in the accommodating cavity, so as to facilitate the replacement of the aerosol generating product. Compared with the traditional clamping structure, the above-mentioned clamping structure can automatically clamp the aerosol generating product contained in the accommodating cavity under the heating of the circumferential heating element when the user inhales, and can also automatically release the clamping of the aerosol generating product contained in the accommodating cavity due to the gradual cooling down caused by the loss of the heating of the circumferential heating element after the user finishes inhaling. Therefore, when replacing the aerosol generating product, it will not be hindered by the above-mentioned clamping structure, which is beneficial to prevent the aerosol generating product from being deformed due to external force during the insertion process of the aerosol generating product into the accommodating cavity, and is also beneficial to prevent the protrusion from being worn due to repeated insertion and removal of the aerosol generating product.

[0007] According to some embodiments of the present application, the elastic sealed cavity and the rigid heat-conductive shell are located above the circumferential heating element, and both the elastic sealed cavity and the rigid heat-conductive shell are annular so as to be used for passing aerosol generating products. There are multiple raised portions, and the multiple raised portions are arranged at intervals in the inner ring of the elastic sealed cavity. The inner ring of the rigid heat-conductive shell is provided with multiple avoidance holes corresponding to the multiple raised portions one by one.

[0008] According to some embodiments of the present application, the rigid heat-conductive shell is a split structure, and the rigid heat-conductive shell includes an annular upper shell and an annular lower shell, and the avoidance through hole is formed by a first avoidance notch arranged on the upper shell and a second avoidance notch arranged on the lower shell.

[0009] According to some embodiments of the present application, a positioning structure is provided between the upper shell and the lower shell for assisting the first avoidance gap to dock with the corresponding second avoidance gap.

[0010] According to some embodiments of the present application, the positioning structure includes a positioning protrusion arranged at the bottom of the upper shell and a positioning groove arranged at the top of the lower shell, and the positioning protrusion is embedded in the positioning groove.

[0011] According to some embodiments of the present application, the wall thickness of the region of the protrusion used to clamp the aerosol generating product is greater than the wall thickness of other regions of the elastic closed cavity.

[0012] According to some embodiments of the present application, the outer surface of the elastic sealed cavity fits the inner surface of the elastic sealed cavity.

[0013] According to some embodiments of the present application, a bracket assembly is further provided in the housing, and the bracket assembly is used to support and fix the circumferential heating element and the clamping structure.

[0014] According to some embodiments of the present application, the bracket assembly includes an upper bracket, a lower bracket and a tubular support member, the upper bracket and the lower bracket are arranged at an axial interval along the outer shell, the upper bracket is provided with an avoidance port for avoiding the aerosol generating product, the support member is vertically arranged between the upper bracket and the lower bracket, the bottom of the support member abuts against the top of the lower bracket, the rigid heat-conductive shell is clamped between the bottom of the upper bracket and the top of the support member, and the circumferential heating element is vertically arranged inside the support member and clamped between the bottom of the rigid heat-conductive shell and the top of the lower bracket.

[0015] According to some embodiments of the present application, the rigid heat-conductive shell abuts against the circumferential heating element.

[0016] According to some embodiments of the present application, the filler is air.

[0017] 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

[0018] 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:

[0019] Figure 1 is a partial cross-sectional schematic diagram of the electronic atomization device of an embodiment of the present application;

[0020] Figure 2 yes Figure 1 A partial enlarged schematic diagram in the middle;

[0021] Figure 3 It is a cross-sectional schematic diagram of a circumferential heating element, an elastic sealed cavity, a rigid heat-conducting housing, a lower bracket and a supporting member when the protrusion in the electronic atomization device of the embodiment of the present application is retracted to avoid the through hole;

[0022] Figure 4 yes Figure 3 A schematic top view of the structure shown;

[0023] Figure 5 It is a cross-sectional schematic diagram of the circumferential heating element, the elastic sealed cavity, the rigid heat-conducting shell, the lower bracket and the supporting member when the protrusion in the electronic atomization device of the embodiment of the present application extends into the accommodating cavity;

[0024] Figure 6 yes Figure 5 A schematic top view of the structure shown;

[0025] Figure 7 is an exploded schematic diagram of the electronic atomization device of an embodiment of the present application;

[0026] Figure 8 It is a schematic diagram of the decomposition of the elastic sealed cavity and the rigid heat-conducting shell in the electronic atomization device of the embodiment of the present application.

[0027] Reference numerals:

[0028] Aerosol generating product a, shell 100, circumferential heating element 200, accommodating cavity 300, elastic sealed cavity 410, protrusion 411, rigid heat-conducting shell 420, avoidance through hole 421, upper shell 422, first avoidance notch 4221, positioning protrusion 4222, lower shell 423, second avoidance notch 4231, positioning groove 4232, upper bracket 510, avoidance opening 511, lower bracket 520, support member 530. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Reference Figures 1 to 6 According to an embodiment of the present application, the electronic atomization device includes a housing 100, a circumferential heating body 200 and a clamping structure.

[0035] The outer shell 100 is a top-opening structure, the circumferential heating element 200 is tubular, the circumferential heating element 200 is arranged in the outer shell 100 and is used to heat the aerosol generating product a, the clamping structure is arranged in the outer shell 100, the clamping structure and the circumferential heating element 200 are enclosed to form a accommodating cavity 300 with a top opening and used to accommodate the aerosol generating product a, the clamping structure includes an elastic sealed cavity 410 and a rigid heat-conductive shell 420, the rigid heat-conductive shell 420 is coated on the outside of the elastic sealed cavity 410, and a protrusion 411 is arranged on the side of the elastic sealed cavity 410 facing the accommodating cavity 300, specifically, the cavity inside the elastic sealed cavity 410 extends to the inside of the protrusion 411, and the rigid heat-conductive shell 420 faces the accommodating cavity 300. A bypass hole 421 for accommodating the protrusion 411 is provided on one side of 00, the protrusion 411 is accommodated in the bypass hole 421, the interior of the elastic sealed cavity 410 is filled with filler, the circumferential heating element 200 can heat the elastic sealed cavity 410 to heat the filler inside the elastic sealed cavity 410, the filler inside the elastic sealed cavity 410 can expand after heating, so that the protrusion 411 can extend into the accommodating cavity 300 through the bypass hole 421 and clamp the aerosol generating product a accommodated in the accommodating cavity 300, and the filler inside the elastic sealed cavity 410 can return to its original state after cooling to room temperature, so that the protrusion 411 extending into the accommodating cavity 300 can shrink into the bypass hole 421.

[0036] It should be noted that, in some of the embodiments, the rigid heat-conductive shell 420 is a structure independent of the outer shell 100 . Of course, the rigid heat-conductive shell 420 can also be integrally formed with the outer shell 100 , which is not limited here.

[0037] It should be noted that, in some of the embodiments, the elastic sealed cavity 410 is made of high-temperature resistant rubber or high-temperature resistant silicone that reaches food grade.

[0038] It should be noted that in some of the embodiments, the rigid heat-conducting shell 420 is made of metal materials with good thermal conductivity such as steel or aluminum. Of course, the rigid heat-conducting shell 420 can also be made of non-metallic materials with good thermal conductivity such as thermal conductive ceramics, which is not limited here.

[0039] When the user inhales, the circumferential heating element 200 can not only heat the aerosol generating product a contained in the accommodating cavity 300, but also heat the clamping structure, so that the filler filled in the elastic sealed cavity 410 expands. At this time, since the deformation of the elastic sealed cavity 410 is limited by the rigid heat-conducting shell 420, the protrusion 411 can be driven to extend into the accommodating cavity 300 through the avoidance through hole 421 and clamp the aerosol generating product a contained in the accommodating cavity 300, thereby preventing the aerosol generating product a contained in the accommodating cavity 300 from being swelled. The aerosol generating product a in the receiving cavity 300 becomes loose or accidentally detaches from the receiving cavity 300 when the user is inhaling; after the user finishes inhaling, the circumferential heating element 200 stops heating, and the clamping structure gradually cools down to room temperature to restore the filler filled in the elastic closed cavity 410 to its original state, so that the protrusion 411 extending into the receiving cavity 300 shrinks into the through hole 421 and releases the clamping of the aerosol generating product a contained in the receiving cavity 300, so as to facilitate the replacement of the aerosol generating product a. Compared with the traditional clamping structure, the above-mentioned clamping structure can automatically clamp the aerosol generating product a contained in the accommodating cavity 300 under the heating of the circumferential heating element 200 when the user inhales, and can also automatically release the clamping of the aerosol generating product a contained in the accommodating cavity 300 by gradually cooling down to room temperature due to the loss of heating by the circumferential heating element 200 after the user finishes inhaling. Therefore, when replacing the aerosol generating product a, it will not be hindered by the above-mentioned clamping structure, which is beneficial to prevent the aerosol generating product a from being deformed due to external force during the insertion process of the accommodating cavity 300, and at the same time, it is beneficial to prevent the protrusion 411 from being worn due to repeated insertion and removal of the aerosol generating product a.

[0040] Reference Figures 1 to 8 In some embodiments, the number of the elastic sealed cavity 410 and the rigid heat-conducting shell 420 are both one, the elastic sealed cavity 410 and the rigid heat-conducting shell 420 are located above the circumferential heating element 200, and the elastic sealed cavity 410 and the rigid heat-conducting shell 420 are both annular, so as to be used for passing the aerosol generating product a, the number of the protrusions 411 is multiple, specifically, the number of the protrusions 411 is preferably 4 to 6, the multiple protrusions 411 are arranged at intervals on the inner ring of the elastic sealed cavity 410, and the inner ring of the rigid heat-conducting shell 420 is provided with multiple avoidance through holes 421 corresponding to the multiple protrusions 411, and the structure is simple and easy to assemble. Of course, the number of the protrusions 411 and the avoidance through hole 421 can also be one, specifically, the protrusion 411 is annular (arranged along the inner ring of the elastic sealed cavity 410 and connected end to end), and correspondingly, the avoidance through hole 421 is also annular, which is not limited here.

[0041] Reference Figures 1 to 3 as well as Figure 5 , Figure 7 and Figure 8In some of the embodiments, the rigid heat-conducting shell 420 is a split structure, and the rigid heat-conducting shell 420 includes an annular upper shell 422 and an annular lower shell 423. The avoidance through hole 421 is formed by a first avoidance notch 4221 provided on the upper shell 422 and a second avoidance notch 4231 provided on the lower shell 423. The rigid heat-conducting shell 420 with a split structure is easy to process and assemble.

[0042] It should be noted that, in some of the embodiments, a positioning structure is provided between the upper shell 422 and the lower shell 423 to assist the first avoidance gap 4221 to dock with the corresponding second avoidance gap 4231 , thereby helping to reduce the difficulty of assembly.

[0043] Reference Figure 7 and Figure 8 In some of the embodiments, the positioning structure includes a positioning protrusion 4222 arranged at the bottom of the upper shell 422 and a positioning groove 4232 arranged at the top of the lower shell 423, and the positioning protrusion 4222 is embedded in the positioning groove 4232, and its structure is simple and easy to implement.

[0044] It should be noted that, in some other embodiments, the positioning protrusion 4222 may also be arranged on the top of the lower shell 423, and correspondingly, the positioning groove 4232 is arranged on the bottom of the upper shell 422, which is not limited here.

[0045] It should be noted that, in some other embodiments, the rigid heat-conducting housing 420 may also be an integrated structure, which is not limited here.

[0046] Reference Figures 1 to 3 as well as Figure 5 In some of the embodiments, the wall thickness of the area where the protrusion 411 is used to clamp the aerosol generating product a is greater than the wall thickness of other areas of the elastic closed cavity 410, so that the area where the protrusion 411 is used to clamp the aerosol generating product a has sufficient structural strength and is not easily deformed after being subjected to force, thereby being able to provide a stable clamping force.

[0047] Reference Figures 1 to 3 as well as Figure 5 In some of the embodiments, the outer surface of the elastic sealed cavity 410 fits the inner surface of the elastic sealed cavity 410, so that when the filler inside the elastic sealed cavity 410 expands, the deformation of the elastic sealed cavity 410 is mainly concentrated on the protrusion 411, which is beneficial to reduce the requirements for the volume expansion coefficient of the filler inside the elastic sealed cavity 410.

[0048] It should be noted that, in some of the embodiments, a bracket assembly is further provided in the outer shell 100, and the bracket assembly is used to support and fix the circumferential heating element 200 and the clamping structure. Compared with the case where the bracket assembly for supporting and fixing the circumferential heating element 200 and the clamping structure is processed in the outer shell 100, a bracket assembly for supporting and fixing the circumferential heating element 200 and the clamping structure is provided in the shell, which is beneficial to reducing the processing difficulty of the outer shell 100.

[0049] Reference Figures 1 to 3 as well as Figure 5 and Figure 7 In some embodiments, the bracket assembly includes an upper bracket 510, a lower bracket 520 and a tubular support member 530. The upper bracket 510 and the lower bracket 520 are arranged at intervals along the axial direction of the shell 100. The upper bracket 510 is provided with an avoidance port 511 for avoiding the aerosol generating product a. The support member 530 is vertically arranged between the upper bracket 510 and the lower bracket 520. The bottom of the support member 530 abuts against the top of the lower bracket 520. The rigid heat-conductive shell 420 is sandwiched between the bottom of the upper bracket 510 and the top of the support member 530. The circumferential heating element 200 is vertically arranged inside the support member 530 and sandwiched between the bottom of the rigid heat-conductive shell 420 and the top of the lower bracket 520. The structure is simple and easy to assemble.

[0050] It should be noted that, in some other embodiments, the elastic sealed cavity 410 and the rigid heat-conducting shell 420 can also be mounted outside the circumferential heating body 200. Correspondingly, the side wall of the circumferential heating body 200 is provided with an avoidance structure that allows the protrusion 411 to extend into the accommodating cavity 300. At this time, the circumferential heating body 200 is sandwiched between the bottom of the upper bracket 510 and the top of the lower bracket 520, which is not limited here.

[0051] It should be noted that, in some other embodiments, the number of elastic sealed cavities 410 and rigid heat-conductive shells 420 can also be multiple, and the multiple elastic sealed cavities 410 are arranged along the circumference of the accommodating cavity 300, and each elastic sealed cavity 410 is covered with a rigid heat-conductive shell 420, and each elastic sealed cavity 410 is provided with a protrusion 411 on the side facing the accommodating cavity 300, and each rigid heat-conductive shell 420 is provided with an avoidance through hole 421 for accommodating the corresponding protrusion 411 on the side facing the accommodating cavity 300, which is not limited here.

[0052] Reference Figures 1 to 3 as well as Figure 5 In some of the embodiments, the rigid heat-conducting shell 420 abuts against the circumferential heating element 200 so that the circumferential heating element 200 can quickly heat the filler inside the elastic sealed cavity 410 .

[0053] It should be noted that, in some of the embodiments, the filling material inside the elastic sealed cavity 410 is air. Based on the volume of the elastic sealed cavity 410 at room temperature (the designed volume) and the temperature that can be reached by the clamping structure when heated by the circumferential heating element 200, the volume change of the air filled in the elastic sealed cavity 410 at different temperatures can be roughly calculated according to Gay-Lussac's law, that is, the increased volume of the air filled in the elastic sealed cavity 410 when heated by the circumferential heating element 200 can be roughly calculated. Since the deformation of the elastic sealed cavity 410 is mainly concentrated on the protrusion when the air filled in the elastic sealed cavity 410 expands, The maximum elongation of the protrusion 411 can be roughly calculated based on the inner diameter of the cross section at the protrusion 411 (the designed inner diameter) and the number of the protrusions 411 (the designed number). The difference between the maximum elongation and the basic elongation of the protrusion 411 can be roughly calculated based on the basic elongation required for the protrusion 411 to abut against the aerosol generating product a. Finally, the pressure value of the protrusion 411 acting on the aerosol generating product a can be roughly calculated according to the ideal gas state equation, so as to determine whether the protrusion 411 can provide a clamping force that meets actual needs. Through the above process, a clamping structure that meets actual needs can be designed.

[0054] It should be noted that, in some other embodiments, the filler inside the elastic sealed cavity 410 may also be other stable gases, such as carbon dioxide and inert gas, which is not limited here.

[0055] 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.

[0056] 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 having a top opening structure; A circumferential heating element, which is tubular and disposed in the housing and is used to heat the aerosol generating product; A clamping structure, wherein the clamping structure is arranged in the outer shell, the clamping structure and the circumferential heating element are combined to form a accommodating cavity with a top opening for accommodating an aerosol generating product, the clamping structure includes an elastic sealed cavity and a rigid heat-conductive shell, the rigid heat-conductive shell is coated on the outside of the elastic sealed cavity, a protrusion is provided on the side of the elastic sealed cavity facing the accommodating cavity, a avoidance through hole for accommodating the protrusion is provided on the side of the rigid heat-conductive shell facing the accommodating cavity, the protrusion is accommodated in the avoidance through hole, the interior of the elastic sealed cavity is filled with a filler, the circumferential heating element can heat the elastic sealed cavity to heat the filler, the filler can expand after heating, so that the protrusion can extend into the accommodating cavity from the avoidance through hole and clamp the aerosol generating product accommodated in the accommodating cavity, and the filler can return to its original state after cooling, so that the protrusion extending into the accommodating cavity can be retracted into the avoidance through hole.

2. The electronic atomization device according to claim 1, characterized in that: The elastic sealed cavity and the rigid heat-conductive shell are located above the circumferential heating element. Both the elastic sealed cavity and the rigid heat-conductive shell are annular so as to be used for passing aerosol generating products. There are multiple protrusions, which are arranged at intervals in the inner ring of the elastic sealed cavity. The inner ring of the rigid heat-conductive shell is provided with multiple avoidance holes corresponding to the multiple protrusions one by one.

3. The electronic atomization device according to claim 2, characterized in that: The rigid heat-conducting shell is a split structure, comprising an annular upper shell and an annular lower shell, and the avoidance through hole is formed by a first avoidance notch arranged on the upper shell and a second avoidance notch arranged on the lower shell.

4. The electronic atomization device according to claim 3, characterized in that: A positioning structure for assisting the first avoidance notch to dock with the corresponding second avoidance notch is provided between the upper shell and the lower shell.

5. The electronic atomization device according to claim 4, characterized in that: The positioning structure comprises a positioning protrusion arranged at the bottom of the upper shell and a positioning groove arranged at the top of the lower shell, and the positioning protrusion is embedded in the positioning groove.

6. The electronic atomization device according to claim 1, characterized in that: The wall thickness of the area of ​​the protrusion used to clamp the aerosol generating product is greater than the wall thickness of other areas of the elastic closed cavity.

7. The electronic atomization device according to claim 1, characterized in that: The outer surface of the elastic sealed cavity is in contact with the inner surface of the elastic sealed cavity.

8. The electronic atomization device according to claim 1, characterized in that: A bracket assembly is also arranged in the shell, and the bracket assembly is used to support and fix the circumferential heating element and the clamping structure.

9. The electronic atomization device according to claim 8, characterized in that: The bracket assembly includes an upper bracket, a lower bracket and a tubular support member, the upper bracket and the lower bracket are arranged at an axial interval along the outer shell, the upper bracket is provided with an avoidance opening for avoiding aerosol generating products, the support member is vertically arranged between the upper bracket and the lower bracket, the bottom of the support member abuts against the top of the lower bracket, the rigid heat-conductive shell is clamped between the bottom of the upper bracket and the top of the support member, and the circumferential heating element is vertically arranged inside the support member and clamped between the bottom of the rigid heat-conductive shell and the top of the lower bracket.

10. The electronic atomization device according to claim 1, characterized in that: The rigid heat-conducting shell is in contact with the circumferential heating element.

11. The electronic atomization device according to claim 1, characterized in that: The filler is air.

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