Aerosol-generating device

Abstract

The utility model relates to the technical field of aerosol generation, in particular to an aerosol generation device which comprises a support assembly, an abutting part and a driving part, the support assembly is provided with a containing channel, and the containing channel is used for containing an aerosol generation product; the containing channel is provided with a containing opening, and a first air channel is formed in the containing opening. A ventilation structure is arranged on the support assembly and communicated with the outside. The abutting piece is arranged in the containing channel, and the end, close to the opening, of the abutting piece abuts against the aerosol generating product. The abutting piece is provided with a second air channel. The driving piece is arranged in the containing channel and connected with the abutting piece, and the driving piece can drive the abutting piece to do linear reciprocating motion in the direction of the central axis. The driving part can drive the abutting part to move, so that the second air channel is disconnected from or communicated with the ventilation structure, aerosol generating products in different heating modes can be compatible, the use cost of a user can be effectively reduced, and the use experience of the user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and more specifically to an aerosol generating device. Background Art

[0002] An aerosol generating device (hereinafter referred to as the "generating device") is a type of product that utilizes the thermal effect of a heating body to heat an aerosol generating product disposed in its heating chamber, so that the aerosol generating product generates an aerosol without combustion. The generating device has different heating modes based on different air intake methods. Existing heating methods are generally divided into an aerobic heating mode and an anaerobic (or oxygen-deficient) heating mode. In the aerobic heating mode, the taste produced by the heating without burning device is relatively thicker, and in the anaerobic heating mode, the taste produced by the heating without burning device is relatively lighter. The generating device currently used has only a single air intake method, which makes it incompatible with different heating modes. When users want to switch to different heating modes, they need to purchase multiple different generating devices, which increases the user's usage cost. When using them outside, users need to carry multiple production devices, which brings great inconvenience to users and affects the user's usage experience. Utility Model Content

[0003] The present application provides an aerosol generating device that can provide different air intake methods and is compatible with different heating modes.

[0004] The present application provides an aerosol generating device, comprising:

[0005] a bracket assembly, the bracket assembly having a receiving channel for receiving the aerosol generating article; the receiving channel having a receiving opening, the receiving opening having a first airway formed therein; and the bracket assembly being provided with a vent structure, the vent structure being in communication with the outside;

[0006] an abutment member, the abutment member being disposed in the accommodating channel, wherein one end of the abutment member adjacent to the accommodating opening abuts against the aerosol generating article; the abutment member being provided with a second air channel; and

[0007] A driving member is arranged in the accommodating channel and connected to the abutment member. The driving member can rotate around the central axis of the accommodating channel and drive the abutment member to perform linear reciprocating motion along the direction of the central axis to connect the ventilation structure with the second airway or disconnect the ventilation structure from the second airway.

[0008] In an optional embodiment, the abutment member has a first position and a second position, and the driving member can drive the abutment member to switch between the first position and the second position along the direction of the central axis; in the first position, the ventilation structure is connected to the second airway; in the second position, the ventilation structure is disconnected from the second airway.

[0009] In an optional embodiment, the driving member is provided with a thread, and at least a portion of the structure of the abutting member is movably sleeved on the thread.

[0010] In an optional embodiment, a first through hole is provided at one end of the abutment member close to the accommodating opening, a gas space is provided inside the abutment member, and a second through hole is provided on the side wall of the abutment member. The first through hole, the gas space and the second through hole form the second air duct.

[0011] In an optional embodiment, the abutment member includes a first movable segment and a second movable segment, the first movable segment and the second movable segment are arranged along the direction of the central axis, the first movable segment is arranged close to the accommodating opening, one end of the second movable segment is connected to the first movable segment, and the other end is movably sleeved on the driving member; the second air duct is formed on the first movable segment.

[0012] In an optional embodiment, the bracket assembly includes a first bracket and a second bracket, the first bracket and the second bracket are fixedly arranged along the direction of the central axis, and the accommodating opening is formed on the first bracket.

[0013] In an optional embodiment, at least part of the structure of the first bracket is arranged inside the second bracket and is spaced apart from the side wall of the second bracket to form an air intake space between the first bracket and the second bracket; the side wall of the first bracket is provided with a through first air intake hole, and the second bracket is provided with a second air intake hole, and the first air intake hole, the air intake space and the second air intake hole form the ventilation structure.

[0014] In an optional embodiment, a limiting protrusion is provided on one of the abutment member and the bracket assembly, and a limiting groove is provided on the other, the limiting groove extends along the direction of the central axis, and the limiting protrusion is slidably arranged in the limiting groove.

[0015] In an optional embodiment, an assembly opening is provided at one end of the limiting groove away from the accommodating opening, and the limiting protrusion enters or exits the limiting groove through the assembly opening.

[0016] In an optional embodiment, the aerosol generating device further includes a heating element, which is used to heat the aerosol generating product; the heating element is arranged at the accommodating opening and is arranged on the outside of the bracket assembly or inserted in the accommodating channel; the heating element, the bracket assembly and the abutment member form a heating chamber, and at least part of the structure of the aerosol generating product is arranged in the heating chamber; the driving member drives the abutment member to move along the direction of the central axis, thereby changing the length of the heating chamber.

[0017] According to the generating device in the above embodiment, it includes a bracket assembly, an abutment member and a driving member. The driving member can rotate around the central axis of the accommodating channel and drive the abutment member to perform linear reciprocating motion along the direction of the central axis to connect the ventilation structure with the second airway air path, or disconnect the ventilation structure from the second airway air path so that the generating device can be placed in an oxygen-free or oxygen-deficient environment or an oxygen-rich environment, thereby being compatible with aerosol generating products with different heating modes, effectively reducing the user's usage cost and improving the user's usage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional view of the structure of an aerosol generating device in one embodiment;

[0019] Figure 2 Schematic diagram of an exploded structure of an aerosol generating device in one embodiment;

[0020] Figure 3 A cross-sectional view of the structure of the aerosol generating device in communication with the second air channel in one embodiment;

[0021] Figure 4 A cross-sectional view of the structure of an aerosol generating device with the second air channel disconnected in one embodiment;

[0022] Figure 5 Schematic diagram of the structure of the second bracket in one embodiment.

[0023] Among them: 100, bracket assembly; 110, accommodating channel; 120, accommodating opening; 121, first air channel; 130, ventilation structure; 131, first air inlet; 132, second air inlet; 133, air inlet space; 140, first bracket; 150, second bracket; 160, limiting groove; 161, assembly opening; 200, abutment; 210, second air channel; 211, first through hole; 212, gas space; 213, second through hole; 220, first movable section; 230, second movable section; 240, limiting protrusion; 300, driving member; 310, thread; 400, heating member; 410, heating chamber; 500, base; 600, sealing member; A, aerosol generating product. DETAILED DESCRIPTION

[0024] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0025] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various implementations, and the operational steps involved in each embodiment may be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a particular embodiment and do not imply a required composition and / or sequence.

[0026] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0027] The present application provides an aerosol generating device (hereinafter referred to as "generating device") for heating an aerosol generating product A and generating aerosol for use by a user.

[0028] It should be noted that the term "aerosol" refers to a dispersion of solid or liquid particles in a gas. As used herein, "aerosol" may generally refer to a substance that has been vaporized, atomized, in the form of a spray or jet, or otherwise converted from a solid or liquid form into an inhalable form containing suspended solid or liquid drug particles.

[0029] As used herein, the term "aerosol-generating article A" refers to any suitable compound or mixture of compounds that facilitates the formation of an aerosol (e.g., a stable aerosol that is substantially resistant to thermal degradation at the operating temperature of the system) during use. Suitable aerosol-generating articles A are well known in the art and include, but are not limited to: polyols, such as triethylene glycol, 1,3-butanediol, and glycerol; esters of polyols, such as glycerol mono-, di-, or triacetate; and aliphatic esters of mono-, di-, or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate.

[0030] Aerosol generating product A may include nicotine. The atomizing matrix may include water. Aerosol generating product A may include glycerol (also known as glycerol) having a higher boiling point than nicotine. Aerosol generating product A may include propylene glycol. Aerosol generating product A may include plant-based materials. Aerosol generating product A may include a homogeneous plant-based material. The homogeneous plant-based material may contain volatile compounds. These compounds may be released from the aerosol generating product A when heated. Aerosol generating product A is generally fixed and formed by paper or other containers and is roughly cylindrical in structure.

[0031] See also Figures 1 to 5 The generating device includes a support assembly 100, an abutting member 200 and a driving member 300. The support assembly 100 has a receiving channel 110 for receiving and fixing the aerosol generating product A. The receiving channel 110 has a receiving opening 120, and a first air channel 121 is formed on the receiving opening 120. The support assembly 100 is provided with a ventilation structure 130, and the ventilation structure 130 is connected to the outside. The abutting member 200 is arranged in the receiving channel 110. The abutting member 200 One end close to the accommodating opening 120 abuts against the aerosol generating product A; a second air channel 210 is provided on the abutting member 200, and a driving member 300 is arranged in the accommodating channel 110 and connected to the abutting member 200. The driving member 300 can rotate around the central axis of the accommodating channel 110 and drive the abutting member 200 to perform a linear reciprocating motion along the direction of the central axis to connect the ventilation structure 130 with the second air channel 210 or disconnect the ventilation structure 130 from the second air channel 210.

[0032] Specifically, in the present application, the abutting member 200 is moved by the driving member 300, so that the ventilation structure 130 and the second air channel 210 are disconnected, that is, the accommodating channel 110 is closed to the outside air. When the customer uses it, the gas enters the aerosol generating product A through the accommodating opening 120 (such as Figure 4 As shown by the arrow in the middle, the generating device is in an oxygen-free or oxygen-deficient environment, and is suitable for an aerosol generating product A in an oxygen-free or oxygen-deficient heating mode, such as an NSCs aerosol generating product A. The abutting member 200 is moved by the driving member 300, so that the ventilation structure 130 and the second air channel 210 are connected, and the accommodating channel 110 is connected to the outside air. When the customer uses it, the gas enters the aerosol generating product A through the ventilation structure 130 and the second air channel 210 (as shown in the figure). Figure 3(as indicated by the middle arrow), at this time, the generating device is in an aerobic environment and is suitable for an aerosol generating product A in an aerobic heating mode, such as an aerosol generating product A of the TEREA model. Through the cooperation of the driving member 300, the abutting member 200, the ventilation structure 130, the first air channel 121 and the second air channel 210, the generating device can switch between different heating modes and be compatible with different types of aerosol generating products A, thereby reducing the user's usage cost and improving the user's usage experience.

[0033] In order to better accommodate and fix the aerosol-generating product A and ensure that the aerosol-generating product A is heated evenly during the heating process, the accommodating channel 110 in which the aerosol-generating product A is placed should match the size of the aerosol-generating product A.

[0034] To heat the aerosol-generating article A, the generating device further includes a heating element 400. The heating element 400 can heat the aerosol-generating article A through circumferential heating or bottom heating. Furthermore, the heating element 400 can heat the aerosol-generating article A through electromagnetic heating or resistive heating. The heating element 400 can include a heating tube, a heating mesh, a heating wire, and other structures.

[0035] In some optional embodiments, the heating element 400 is arranged at the accommodating opening 120 and is arranged on the outside of the bracket assembly 100 or inserted in the accommodating channel 110. The heating element 400 heats the aerosol generating product A by circumferential heating. The overall structure of the heating element 400 is a hollow cylinder. The heating element 400, the bracket assembly 100 and the abutment member 200 are constructed to form a heating chamber 410. At least part of the structure of the aerosol generating product A is arranged in the heating chamber 410.

[0036] Specifically, an aerosol-generating product A generally includes an inhalation section, an airflow section, and a substrate section. During use, the substrate section is generally heated. To ensure that the aerosol-generating product A is fully heated and convenient for the user, the length of the heating chamber 410 is generally greater than or equal to the length of the substrate section. Due to the varying lengths of different aerosol-generating products A, the length of their substrate sections may also vary. To effectively ensure that the substrate section is fully contained within the heating chamber 410, the abutment member 200 is driven by the drive member 300 to move along the central axis, thereby varying the length of the heating chamber 410 to accommodate different aerosol-generating products A. For example, the length of a TEREA aerosol-generating product A is greater than that of an NSCs aerosol-generating product A. When using a TEREA aerosol-generating product A, the abutment member 200 is positioned relatively farther from the receiving opening 120, resulting in a relatively longer heating chamber 410. When using an NSCs aerosol-generating product A, the abutment member 200 is positioned relatively closer to the receiving opening 120, resulting in a relatively shorter heating chamber 410.

[0037] In some optional embodiments, the abutment member 200 has a first position and a second position, and the driving member 300 can drive the abutment member 200 to switch between the first position and the second position along the direction of the central axis; in the first position, the ventilation structure 130 is connected to the air path of the second air duct 210; in the second position, the ventilation structure 130 is disconnected from the air path of the second air duct 210.

[0038] In some optional embodiments, a thread 310 is provided on the driving member 300, and at least part of the structure of the abutment member 200 is movably mounted on the thread 310. When the driving member 300 is controlled to rotate, the abutment member 200 can move linearly along the axial direction of the driving member 300 (in the direction of the central axis of the accommodating channel 110). Changing the rotation direction of the driving member 300 can change the movement direction of the abutment member 200, thereby realizing a linear reciprocating motion of the abutment member 200 along the direction of the central axis of the accommodating channel 110, and changing the position of the abutment member 200 in the accommodating channel 110, so that the length of different heating chambers 410 can be adjusted, and the second air duct 210 and the ventilation structure 130 can be connected or disconnected.

[0039] In some optional embodiments, the generating device further includes an outer shell (not shown in the figure) and a base 500. The outer shell and the base 500 enclose an installation space (not shown in the figure). The base 500 is snap-connected to the bracket assembly 100 to facilitate the fixation of the bracket assembly 100. The bracket assembly 100 is arranged in the installation space, and part of the structure of the driving member 300 is exposed on the base 500 to facilitate the operator to control the driving member 300. A power supply assembly including a PCB control board and a battery is also provided in the installation space.

[0040] See also Figure 3 and Figure 4 A first through hole 211 is defined at one end of the abutting member 200 near the accommodating opening 120. A gas space 212 is defined within the abutting member 200. A second through hole 213 is defined through the sidewall of the abutting member 200. The first through hole 211, the gas space 212, and the second through hole 213 form a second gas channel 210. The central axis of the second through hole 213 is perpendicular to the central axis of the accommodating channel 110, thereby shortening the gas path.

[0041] To ensure uniform gas flow into the aerosol-generating article A, multiple first through-holes 211 may be provided, evenly distributed along the end surface of the abutment member 200 near the accommodating opening 120. The shapes of the multiple first through-holes 211 may be circular or elliptical, and may also be rectangular or polygonal, without limitation. The axes of the multiple first through-holes 211 are all straight lines along the central axis, allowing gas to flow directly into the aerosol-generating article A.

[0042] In order to facilitate processing and reduce the cost of parts replacement and maintenance, the abutment 200 includes a first movable section 220 and a second movable section 230. The first movable section 220 and the second movable section 230 are arranged along the direction of the central axis. The first movable section 220 is arranged near the accommodating opening 120. One end of the second movable section 230 is connected to the first movable section 220, and the other end is movably sleeved on the driving member 300; the second air duct 210 is formed on the first movable section 220, that is, the first through hole 211, the second through hole 213 and the gas space 212 are all arranged on the first movable section 220, and the end of the first movable section 220 close to the accommodating opening 120 forms a semi-closed structure through the first ventilation hole. The end where the first movable section 220 is connected to the second movable section 230 is open, and the opening is communicated with the gas space 212. The first movable section 220 and the second movable section 230 are connected by plugging. In order to improve the stability of the connection, the first movable section 220 and the second movable section 230 can be fixed by screwing or welding.

[0043] In some optional embodiments, the bracket assembly 100 includes a first bracket 140 and a second bracket 150, which are fixedly arranged along the direction of the central axis. The accommodating opening 120 is formed on the first bracket 140, and the first bracket 140 and the second bracket 150 are hollow inside to form an accommodating channel 110, which is convenient for processing the first bracket 140 and the second bracket 150 separately.

[0044] See also Figure 3 At least part of the structure of the first bracket 140 is arranged inside the second bracket 150, and is spaced apart from the side wall of the second bracket 150 to form an air intake space 133 between the first bracket 140 and the first bracket 140; the side wall of the first bracket 140 is provided with a through first air intake hole 131, and the second bracket 150 is provided with a second air intake hole 132. The first air intake hole 131, the air intake space 133 and the second air intake hole 132 form a ventilation structure 130.

[0045] When the abutting member 200 moves to the first position, the second through hole 213 and the first air inlet 131 are aligned, allowing gas communication. Gas entering through the vent structure 130 can enter the aerosol generating product A along the second air channel 210. When the abutting member 200 moves to the second position, the second through hole 213 and the first air inlet 131 are offset. The side wall of the first bracket 140 can block the second through hole 213, and the side wall of the abutting member 200 can block the first air inlet 131, thereby disconnecting the air path between the vent structure 130 and the second air channel 210.

[0046] In order to effectively seal and prevent gas from flowing through the gap between the first bracket 140 and the abutment 200, a sealing member 600 is sleeved on the outer wall of the abutment 200. The sealing member 600 is a sealing ring made of silicone and has a certain elasticity. It does not affect the assembly of the abutment 200 and the first bracket 140, nor does it affect the movement of the abutment 200. It can also seal the gap between the abutment 200 and the first bracket 140.

[0047] The central axis of the first air inlet hole 131 is perpendicular to the central axis of the accommodating channel 110, and the central axis of the second air inlet hole 132 is roughly parallel to the central axis of the accommodating channel 110. The gap between the driving member 300 and the base 500 allows external gas to enter the bracket assembly 100, and then the gas flows into the second air channel 210 along the second air inlet hole 132, the air intake space 133 and the first air inlet hole 131 in sequence.

[0048] In order to be compatible with aerosol generating products A of various lengths in the aerobic heating mode, multiple first air inlet holes 131 can be provided, and they can be arranged in sequence along the direction of the central axis of the accommodating channel 110. The abutment member 200 is moved to different positions so that the second through hole 213 is aligned with the first air inlet holes 131 at different positions (perpendicular to the direction of the central axis of the accommodating channel 110), so that the second air channel 210 can be connected to the external environment through the first air inlet hole 131, the air intake space 133 and the second air inlet hole 132 in sequence.

[0049] Of course, in other embodiments, a plurality of second through holes 213 may be provided, and the plurality of second through holes 213 may be arranged in sequence along the direction of the central axis of the accommodating channel 110, and the abutment member 200 may be moved to different positions so that the second through holes 213 at different positions are aligned with the first air inlet hole 131 (in the direction perpendicular to the central axis of the accommodating channel 110), so that the second air duct 210 can be connected to the external environment through the first air inlet hole 131, the air intake space 133 and the second air inlet hole 132 in sequence.

[0050] In order to prevent the abutment 200 from rotating with the rotation of the driving member 300, so that the linear reciprocating motion trajectory of the abutment 200 is stable and consistent, and to limit the extreme position of the abutment 200 moving along the direction of the central axis of the accommodating channel 110, a limiting protrusion 240 is provided on one of the abutment 200 and the bracket assembly 100, and a limiting groove 160 is provided on the other. The limiting groove 160 extends along the direction of the central axis, and the limiting protrusion 240 is slidably set in the limiting groove 160.

[0051] See also Figure 2 and Figure 5A limiting protrusion 240 is provided on the second movable section 230 of the abutment 200, and a limiting groove 160 is provided on the second bracket 150 in the bracket assembly 100. The limiting groove 160 extends along the direction of the central axis of the accommodating channel 110, so that the limiting protrusion 240 can only move along the direction of the central axis of the accommodating channel 110.

[0052] In some optional embodiments, an assembly opening 161 is provided at one end of the limiting groove 160 away from the accommodating opening 120, and the limiting protrusion 240 enters or exits the limiting groove 160 through the assembly opening 161, thereby not only meeting the assembly requirements but also limiting the upper limit of the movement of the abutment 200.

[0053] It should be noted that, based on the usage habits of the production device, the accommodating opening 120 is set at the top and the abutment 200 is set at the bottom thereof. The setting of the limiting groove 160 can define the upper and lower limits of the up and down reciprocating motion of the abutment 200. When the assembly opening 161 is opened at the end of the limiting groove 160 away from the accommodating opening 120, that is, the assembly opening 161 is opened at the bottom, the limiting groove 160 can limit the upper limit of the abutment 200. By adjusting the extension length of the thread 310 on the driving member 300 and adjusting the position of the connection between the abutment 200 and the driving member 300, the movement range of the abutment 200 can be adjusted. For example, the movement range of the abutment 200 can be limited to between 1 mm and 5 mm.

[0054] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For those skilled in the art of the present application, based on the concept of the present application, they can also make some simple deductions, modifications or substitutions.

Claims

1. An aerosol generating device, characterized in that include: a support assembly having a receiving channel for receiving the aerosol-generating article; The accommodating channel has an accommodating opening, and a first air channel is formed on the accommodating opening; the bracket assembly is provided with a ventilation structure, and the ventilation structure is communicated with the outside; an abutment member, the abutment member being disposed in the accommodating channel, wherein one end of the abutment member adjacent to the accommodating opening abuts against the aerosol generating article; the abutment member being provided with a second air channel; and A driving member is arranged in the accommodating channel and connected to the abutment member. The driving member can rotate around the central axis of the accommodating channel and drive the abutment member to perform linear reciprocating motion along the direction of the central axis to connect the ventilation structure with the second airway or disconnect the ventilation structure from the second airway.

2. The aerosol generating device according to claim 1, wherein The abutment member has a first position and a second position, and the driving member can drive the abutment member to switch between the first position and the second position along the direction of the central axis; when in the first position, the ventilation structure is connected to the second airway; in the second position, the ventilation structure is disconnected from the second airway.

3. The aerosol generating device according to claim 1, wherein The driving member is provided with a thread, and at least a part of the structure of the abutting member is movably sleeved on the thread.

4. The aerosol generating device according to claim 1, wherein A first through hole is provided at one end of the abutment member close to the accommodating opening, a gas space is provided inside the abutment member, a second through hole is provided on the side wall of the abutment member, and the first through hole, the gas space and the second through hole form the second air channel.

5. The aerosol generating device according to claim 1, wherein: The abutment member includes a first movable segment and a second movable segment, the first movable segment and the second movable segment are arranged along the direction of the central axis, the first movable segment is arranged close to the accommodating opening, one end of the second movable segment is connected to the first movable segment, and the other end is movably sleeved on the driving member; The second air channel is formed on the first movable segment.

6. The aerosol generating device according to claim 1, wherein: The bracket assembly includes a first bracket and a second bracket. The first bracket and the second bracket are fixedly arranged along the direction of the central axis. The accommodating opening is formed on the first bracket.

7. The aerosol generating device according to claim 6, wherein: At least part of the structure of the first bracket is arranged inside the second bracket, and is spaced apart from the side wall of the second bracket to form an air intake space between the first bracket and the second bracket; the side wall of the first bracket is provided with a through first air intake hole, and the second bracket is provided with a second air intake hole, and the first air intake hole, the air intake space and the second air intake hole form the ventilation structure.

8. The aerosol generating device according to claim 1, wherein A limiting protrusion is provided on one of the abutting member and the bracket assembly, and a limiting groove is provided on the other. The limiting groove extends along the direction of the central axis, and the limiting protrusion is slidably arranged in the limiting groove.

9. The aerosol generating device according to claim 8, characterized in that An assembly opening is provided at one end of the limiting groove away from the accommodating opening, and the limiting protrusion enters or exits the limiting groove through the assembly opening.

10. The aerosol generating device according to claim 1, wherein The aerosol generating device also includes a heating element, which is used to heat the aerosol generating product; the heating element is arranged at the accommodating opening and is arranged on the outside of the bracket assembly or inserted in the accommodating channel; the heating element, the bracket assembly and the abutment member form a heating chamber, and at least part of the structure of the aerosol generating product is arranged in the heating chamber; the driving member drives the abutment member to move along the direction of the central axis, thereby changing the length of the heating chamber.

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