Aerosol-generating device

Abstract

The utility model provides an aerosol generating device, and belongs to the technical field of aerosol generation, the aerosol generating device comprises a shell assembly, a support assembly, a deformation part, an airflow sensor and a control circuit board, the support assembly is arranged in the shell assembly; a containing cavity is formed in the support assembly. The deformation part is arranged in the containing cavity and divides the containing cavity into a heating cavity and a detection cavity, and the heating cavity and the detection cavity are arranged in a mutually isolated mode; the detection cavity is of a closed structure; the airflow sensor is arranged in the detection cavity and is used for acquiring air pressure change information; the control circuit board is electrically connected with the airflow sensor and used for responding to the air pressure change information so as to output information of the number of times of suction of the user. When a user sucks, the deformation part deforms, so that the air pressure in the detection cavity is changed, the airflow sensor and the control circuit board are matched to obtain the suction frequency information of the user, 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 particularly to an aerosol generation device. BACKGROUND

[0002] The aerosol generation device is a device that uses a heating method to act on an aerosol generation product, thereby generating an aerosol for a user to smoke. The existing aerosol generation device, especially the device for NSC products, does not have a smoking detection structure, which makes it impossible to obtain the information of the number of used smoking times and the number of remaining smoking times, and thus the user experience is poor. CONTENT OF THE UTILITY MODEL

[0003] The present application provides an aerosol generation device that can conveniently obtain the number of smoking times of a user and improve the user experience.

[0004] The present application provides an aerosol generation device, which comprises a shell assembly, a support assembly, a deformation piece, an airflow sensor, and a control circuit board. The support assembly is arranged inside the shell assembly. The support assembly has a receiving cavity inside. The deformation piece is arranged in the receiving cavity and divides the receiving cavity into a heating cavity and a detection cavity. The heating cavity and the detection cavity are arranged separately from each other. The detection cavity is a closed structure, and the deformation piece is used to deform when a user smokes, so that the air pressure change information in the detection cavity is changed. The heating cavity is used to accommodate an aerosol generation product. The airflow sensor is arranged in the detection cavity and is used to obtain the air pressure change information. The control circuit board is electrically connected to the airflow sensor and is used to respond to the air pressure change to output the number of smoking times of the user.

[0005] In some embodiments, the deformation piece is a flat structure or a curved structure that protrudes towards the heating cavity.

[0006] In some embodiments, the deformation piece comprises a plurality of protruding portions and recessed portions, and the plurality of protruding portions and recessed portions are continuously and alternately arranged to form a wavy shape.

[0007] In some embodiments, the support assembly comprises a support base and a base. At least part of the structure of the base is inserted into the inside of the support base, and the deformation piece is arranged on the base. The base is provided with a mounting hole, and the airflow sensor is mounted in the mounting hole.

[0008] In some embodiments, the base comprises an insertion portion and a base portion, a side wall of the insertion portion is configured to form part of the heating cavity, an inner portion of the insertion portion is provided with a first step structure for abutting against an end portion of the aerosol generating article; the deformation member is arranged in the inner portion of the insertion portion and is in interference fit with the insertion portion; the base portion is connected to the insertion portion and abuts against the support base on a side thereof facing the insertion portion.

[0009] In some embodiments, further comprising a heating member arranged in the accommodation cavity for heating the aerosol generating article, a side of the insertion portion away from the base portion is provided with a second step structure, the inner wall of the support base is provided with a limiting structure, the heating member is inserted into the inner portion of the insertion portion and abuts against the second step structure at one end and the limiting structure at the other end.

[0010] In some embodiments, the support assembly further comprises a first sealing member for sealing a gap between the heating member and the insertion portion; the first sealing member comprises a first sealing portion, a second sealing portion and a third sealing portion, the first sealing portion extends along the axial direction of the insertion portion and is arranged between the inner wall of the insertion portion and the outer wall of the heating member; the second sealing portion extends along the radial direction of the insertion portion and is connected to the first sealing portion and the third sealing portion at two ends thereof; the third sealing portion extends along the axial direction of the insertion portion and is arranged in abutment with the outer wall of the insertion portion.

[0011] In some embodiments, a side of the base portion away from the insertion portion is provided with a first clamping structure, the housing assembly is provided with a second clamping structure, the first clamping structure and the second clamping structure are clamped for fixing the support assembly.

[0012] The aerosol generating device further comprises a second sealing member arranged between the base portion and the housing assembly.

[0013] In some embodiments, the support assembly further comprises a clamping member arranged on a side of the support base away from the base; the clamping member has a plurality of clamping portions protruding radially inwardly therefrom, the clamping portions are arranged to abut against the outer wall of the aerosol generating article.

[0014] The support assembly further comprises an end cover arranged on a side of the clamping member away from the support base and coaxially arranged with the clamping member; the inner wall of the end cover is provided with a plurality of air inlet grooves, the air inlet grooves are arranged to extend along the axial direction of the end cover and are uniformly arranged along the circumferential direction of the end cover, the air inlet grooves are in communication with the heating cavity and the airflow section of the aerosol generating article, respectively.

[0015] In some embodiments, the aerosol generating device further comprises a reflecting member coaxially sleeved outside the heating member and spaced apart from the heating member, for reflecting heat radiation on the heating member.

[0016] According to the aerosol generating device in the above embodiments, the housing assembly, the support assembly, the deformation member, the airflow sensor and the control circuit board are provided, the deformation member is arranged in the accommodation cavity to divide the accommodation cavity into a heating cavity and a sealed detection cavity, the airflow sensor is arranged in the detection cavity to monitor the change in air pressure in the detection cavity, when a user inhales, the deformation member deforms based on the negative pressure principle, the detection cavity is in a sealed structure and the mass of the internal gas is constant, the deformation of the deformation member increases the volume of the detection cavity, thereby changing the air pressure in the detection cavity, when the airflow sensor detects the change in air pressure, the control circuit board can respond and output the number of times of user inhalation, thereby improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 6 is a structural cross-sectional view of the use state of the aerosol generating device according to an embodiment;

[0018] Figure 2 FIG. 7 is a structural cross-sectional view of the aerosol generating article according to an embodiment;

[0019] Figure 3 FIG. 8 is a structural cross-sectional view of the support assembly, the heating member and the deformation member according to an embodiment;

[0020] Figure 4 FIG. 9 is an exploded structural view of the support assembly, the heating member and the deformation member according to an embodiment;

[0021] Figure 5 FIG. 10 is a structural cross-sectional view of the base according to an embodiment;

[0022] Figure 6 FIG. 11 is a structural cross-sectional view of the first sealing member according to an embodiment;

[0023] Figure 7 FIG. 12 is an assembly schematic view of the support assembly and the housing assembly according to an embodiment;

[0024] Figure 8 FIG. 13 is a structural cross-sectional view of the support assembly and the housing assembly according to an embodiment; Figure 7

[0025] Figure 9 FIG. 14 is a structural schematic view of the clamping member according to an embodiment;

[0026] Figure 10 FIG. 15 is a structural schematic view of the end cover according to an embodiment.

[0027] ​Wherein: 1, shell assembly; 11, second clamping structure; 111, second extension; 112, second clamping part; 2, support assembly; 21, accommodating cavity; 211, heating cavity; 212, detection cavity; 22, support base body; 221, limiting structure; 23, base; 231, mounting hole; 232, insertion part; 2321, first step structure; 2322, second step structure; 233, base part; 2331, first clamping structure; 2332, first extension; 2333, first clamping part; 24, first sealing element; 241, first sealing part; 242, second sealing part; 243, third sealing part; 25, clamping element; 251, clamping part; 26, end cover; 261, air inlet groove; 3, deformation element; 4, heating element; 5, airflow sensor; 6, power supply assembly; 61, control circuit board; 62, battery; 7, second sealing element; 8, reverse element; A, aerosol generating article; A1, substrate section; A2, airflow section; A21, airflow hole; A3, suction section; B, accommodating cavity axis. DETAILED DESCRIPTION

[0028] The application will be further described in details below with specific embodiments and accompanying drawings. Similar elements in different embodiments are represented with similar reference numerals. In the following embodiments, many details are described in order to provide a better understanding of the application. However, one skilled in the art can easily recognize that some features can be omitted in different cases, or replaced by other elements, materials, methods. In some cases, some operations related to the application are not shown or described in the specification, in order to avoid the core part of the application being overwhelmed by too much description, and it is not necessary for one skilled in the art to understand the related operations in detail according to the description in the specification and general technical knowledge in the art.

[0029] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate way to form various embodiments, and the operation steps involved in each embodiment can also be sequentially adjusted or adjusted in a manner that one skilled in the art can easily see. Therefore, the specification and drawings are only for the purpose of clearly describing one embodiment, and do not mean that the composition and / or order is necessary.

[0030] The serial numbers of components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and have no sequence or technical meaning. The "connection" and "coupling" in this application include direct and indirect connection (coupling) unless otherwise specified.

[0031] The present application provides an aerosol generating device (hereinafter referred to as generating device) which can be used to heat the aerosol generating article A to generate aerosol for user. Of course, the generating device can also be applied to the field of atomization, aromatherapy, etc.

[0032] Before introducing the generating device, the aerosol generating article A to which the present application is applied needs to be introduced in detail. The aerosol generating article A includes a substrate section A1, an airflow section A2 and a suction section A3 arranged in sequence, the substrate section A1 is formed by wrapping the material capable of generating aerosol by wrapping paper or other materials, and the airflow section A2 is provided with a plurality of airflow holes A21 for the passage of aerosol or external air.

[0033] Please refer to Figure 2 In an embodiment, when the aerosol generating article A is an oxygen-free combustion product, such as NSC model, the airflow holes of the airflow section A2 not only include a first part arranged along the axis of the aerosol generating article A, but also include a second part arranged along the radial direction of the aerosol generating article A. When the user sucks through the suction section A3, due to the rapid flow of gas, a negative pressure is generated in the aerosol generating article A. Based on the Bernoulli negative pressure principle, external air enters the airflow section A2 through the airflow holes A21. After the aerosol is generated in the substrate section A1, the aerosol flows along the airflow section A2 to the suction section A3 for the user to use based on the Bernoulli negative pressure principle.

[0034] It should be noted that the term "aerosol" refers to a dispersion of solid or liquid particles in a gas. As used herein, "aerosol" can generally be used to 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 to an inhalable form containing suspended solid or liquid drug particles.

[0035] Please refer to Figure 1 , Figures 3 to 10The generating device comprises a shell assembly 1, a support assembly 2, a deformation piece 3, a heating piece 4, an airflow sensor 5 and a power supply assembly 6. The shell assembly 1 can be understood as a collection of relevant structures constituting the overall outline of the generating device. For example, the shell assembly 1 can be built by combining one or more components, and corresponding assembly structures are arranged on the inside or shell wall of the shell assembly 1 to assemble other components of the generating device to the shell assembly 1. The inside of the shell assembly 1 has a mounting space, the support assembly 2 is arranged in the mounting space inside the shell assembly 1, the deformation piece 3, the heating piece 4 and the airflow sensor 5 are all arranged inside the support assembly 2, and the support assembly 2 constitutes a fixing structure of the deformation piece 3, the heating piece 4 and the airflow sensor 5. The power supply assembly 6 can control the working of the heating piece 4 and the airflow sensor 5, and can improve the power required for the working of the heating piece 4 and the airflow sensor 5. The power supply assembly 6 comprises a control circuit board 61, a battery 62 and a control button (not shown in the figure). The control circuit board 61 and the battery 62 can be arranged in the mounting space, and the control button is arranged on the shell assembly 1 and can have at least part of the structure exposed outside the shell assembly 1 to facilitate user operation and adjustment of the working of the generating device.

[0036] Please refer to Figure 3 The inside of the support assembly 2 has a receiving cavity 21, the deformation piece 3 is arranged in the receiving cavity 21 and divides the receiving cavity 21 into a heating cavity 211 and a detection cavity 212. The heating cavity 211 and the detection cavity 212 are arranged separately from each other. The detection cavity 212 is a closed structure. The deformation piece 3 is used to deform when a user inhales, so that the air pressure in the detection cavity 212 changes. The heating cavity 211 is used to accommodate the aerosol generating article A. The heating piece 4 is arranged in the receiving cavity 21 and is used to heat the aerosol generating article A to generate aerosol. The airflow sensor 5 is arranged in the detection cavity 212 and is used to obtain air pressure change information. The control circuit board 61 is electrically connected with the airflow sensor 5 and is used to output the number of times of user inhalation in response to the air pressure change information.

[0037] One end of the receiving cavity 21 is open, which is used for inserting the aerosol generating article A into the heating cavity 211 and enabling the heating cavity 211 to communicate with the outside air. The other end of the receiving cavity 21 is closed. When the deformation piece 3 is arranged in the receiving cavity 21, it forms the closed detection cavity 212 with the closed end. When a user inhales, a negative pressure is generated in the heating cavity 211, and the air pressure on the side close to the inhalation section A3 is smaller, so that the deformation piece 3 far from the inhalation section A3 is pulled and deformed towards the inhalation section A3 under the action of the negative pressure. Since the detection cavity 212 is a closed structure, the mass of the internal gas is constant. The deformation of the deformation piece 3 increases the volume of the detection cavity 212, so that the air pressure (gas pressure) in the detection cavity 212 decreases. When the airflow sensor 5 detects the air pressure change information, the control circuit board 61 can respond and output the number of times of user inhalation.

[0038] In an embodiment, the heating cavity 211 and the detection cavity 212 are sequentially arranged along the axial direction (the direction of the axis B) of the accommodation cavity 21, one side of the deformation member 3 forms the cavity wall of the heating cavity 211, and the other side seals the detection cavity 212. In order to adapt to the existing aerosol generating article A, the heating cavity 211 is a cylindrical cavity with a straight axis, and in order to facilitate the deformation of the deformation member 3 based on negative pressure, the axis of the accommodation cavity 21 is also straight. Based on the use habit, the heating cavity 211 and the detection cavity 212 are sequentially arranged along the vertical direction, so that the deformation member 3 can deform based on negative pressure during suction. Of course, in other embodiments, the detection cavity 212 can be arranged on one side of the heating cavity 211 and arranged along the radial direction of the accommodation cavity 21.

[0039] In some embodiments, the deformation member 3 is made of soft material that is easy to deform, for example, made of common silica gel material. Since the manufacturing material is common and the process is mature, the production and cost control of the deformation member 3 are facilitated.

[0040] In some embodiments, in order to better and intuitively view the user's suction frequency information, the power supply assembly 6 can further include a display module. The display module can be exposed on the shell assembly 1, or the shell assembly 1 is partially arranged as a transparent structure, and the display module is arranged at the transparent structure and connected with the control circuit board 61. The display module can display the used suction frequency information and / or the remaining suction frequency information. This kind of display method belongs to a relatively mature prior art, and will not be described here.

[0041] In some embodiments, the deformation member 3 is a flat plane structure, and the deformation member 3 is arranged in a spaced manner with the side surface of the airflow sensor 5. This kind of deformation member 3 is relatively simple, convenient for production, and convenient for reducing production cost. Of course, in some other embodiments, the deformation member 3 can also be a curved surface structure protruding towards the heating cavity 211, so that the deformation member 3 is away from the side surface of the airflow sensor 5, avoiding the influence of the contact between the two on the accuracy of airflow change detection.

[0042] In order to make the deformation easier, the suction frequency information can also be detected under smaller suction, and the accuracy of counting is improved. The deformation member 3 includes a plurality of protruding portions and recessed portions, and the plurality of protruding portions and recessed portions are continuously and alternately arranged to form a wavy shape.

[0043] In some embodiments, please refer to Figure 3The bracket assembly 2 comprises a bracket base 22 and a base 23, at least part of the structure of the base 23 is inserted into the inside of the bracket base 22, the deformation member 3 is arranged on the base 23, and the bracket base 22 and the base 23 can be an integrally formed structure, which can improve the sealing performance of the entire bracket base 22, and avoid the influence of air leakage on the detection result. Of course, in some other embodiments, in order to improve the production efficiency of the bracket assembly 2 and reduce the production difficulty, the bracket base 22 and the base 23 can be a split structure, and the sealing performance between the bracket base 22 and the base 23 can be improved by reducing the assembly error.

[0044] In order to facilitate the installation and fixation of the airflow sensor 5, the base 23 is provided with a mounting hole 231, and the airflow sensor 5 is installed in the mounting hole 231. The airflow sensor 5 and the mounting hole 231 are in interference fit, which can better ensure the air tightness of the airflow sensor 5 towards the side of the deformation member 3. The airflow sensor 5 can be an airflow sensor or a pressure sensor, which can monitor the change of airflow by detecting the change of pressure.

[0045] Since the internal temperature of the generating device is high (300-400℃) when it is working, in order to avoid the influence of structural failure on the accuracy of the detection result, the bracket base 22 and the base 23 are made of PEEK material which can resist high temperature.

[0046] Please refer to Figure 3 and Figure 5 In some specific embodiments, the base 23 comprises an insertion part 232 and a base part 233, the side wall structure of the insertion part 232 forms part of the heating cavity 211, the inside of the insertion part 232 is provided with a first step structure 2321, the first step structure 2321 is used to abut against the end of the aerosol generating article A, which can limit the aerosol generating article A, so that the substrate section A1 thereof can be correspondingly arranged in the heating element 4, thereby improving the heating efficiency, so that the substrate section A1 of the aerosol generating article A can be heated sufficiently, avoiding waste caused by insufficient heating, and avoiding the non-substrate section A1 arranged in the heating element 4 from being heated to produce odor affecting the taste of the aerosol. The first step structure 2321 can be formed by two cavities with different diameters in the inside of the insertion part 232, one of which can be used to install the deformation member 3 and the airflow sensor 5, and the other can be used to accommodate part of the structure of the aerosol generating article A. The first step structure 2321 can also be formed by a plurality of protruding structures arranged on the inner wall of the insertion part 232. The shape of the protruding structure can be cylindrical or conical structure, in order to better support the aerosol generating article A, the side of the protruding structure towards the aerosol generating article A is a flat plane.

[0047] In some specific embodiments, the deformation member 3 is arranged inside the insertion portion 232 and is in interference fit with the insertion portion 232, so as to further isolate the heating cavity 211 and the detection cavity 212, ensure the sealing effect of the detection cavity 212, and improve the accuracy of the detection result.

[0048] In some specific embodiments, the base portion 233 is connected with the insertion portion 232, and the side of the base portion 233 facing the insertion portion 232 abuts against the bracket base 22. The base portion 233 and the insertion portion 232 are integrally formed, which can improve the sealing performance after assembly and improve the assembly efficiency. Of course, in other embodiments, the base portion 233 and the insertion portion 232 can also be a detachable split structure for independent processing.

[0049] Please refer to Figure 3 and Figure 5 In some embodiments, the insertion portion 232 is provided with a second step structure 2322 away from the base portion 233, and the inner wall of the bracket base 22 is provided with a limiting structure 221. The heating element 4 is inserted into the inside of the insertion portion 232 and abuts against the second step structure 2322 at one end and the limiting structure 221 at the other end. The heating element 4 is configured to form part of the heating cavity 211. The heating cavity 211 formed by the heating element 4 is mainly used for accommodating the substrate section A1 of the aerosol generating article A. The second step structure 2322 and the limiting structure 221 facilitate the fixation and assembly of the heating element 4 and improve the consistency of multiple generating devices. The heating element 4 can be a heating tube made of a heat-generating conductor, or can include a tube body (heat-conducting tube) and a heating film, a heating layer or a heating circuit arranged thereon. Of course, in some other embodiments, the heating element 4 can be made of a soft magnetic material and cooperate with an electromagnetic coil to generate heat and heat the aerosol generating article A. The second step structure 2322 is the same as the first step structure 2321 and can be formed by two cavities with different diameters. One of the two cavities forming the second step structure 2322 is used to insert the heating element 4 away from the base portion 233. The second step structure 2322 can also be a plurality of protruding structures on the inner wall of the insertion portion 232. In order to better fix the heating element 4, grooves can be provided on the protruding structures for clamping the heating element 4. Based on the heating characteristics of the generating device and the aerosol generating article A, after the aerosol generating article A is installed, the end portion thereof is closer to the base portion 233 than the heating element 4. Therefore, the second step structure 2322 is arranged farther away from the base portion 233 than the first step structure 2321.

[0050] Since the heating element 4 is inserted into the inside of the insertion portion 232, there can be an assembly gap between them. The existence of the assembly gap can cause gas leakage. In order to improve the sealing performance, the bracket assembly 2 further includes a first sealing element 24 for sealing the gap between the heating element 4 and the insertion portion 232.

[0051] Referring to Figure 6 In some specific embodiments, the first sealing member 24 includes a first sealing portion 241, a second sealing portion 242, and a third sealing portion 243. The first sealing portion 241 extends along the axial direction of the insertion portion 232 (the direction of the axis B of the accommodation cavity 21) and is arranged between the inner wall of the insertion portion 232 and the outer wall of the heat generating member 4. The second sealing portion 242 extends along the radial direction of the insertion portion 232 (perpendicular to the direction of the axis B of the accommodation cavity 21) and is connected to the first sealing portion 241 and the third sealing portion 243 at both ends. The third sealing portion 243 extends along the axial direction of the insertion portion 232 (the direction of the axis B of the accommodation cavity 21) and is arranged in close contact with the outer wall of the insertion portion 232. The first sealing portion 241, the second sealing portion 242, and the third sealing portion 243 are arranged continuously to form a structure with a "U" cross-section. When assembling, the first sealing member 24 can be fitted on the end of the insertion portion 232 away from the base portion 233. The first sealing member 24 is made of silica gel, which has good sealing effect, is easy to obtain, and is convenient to prepare and process.

[0052] Referring to Figure 7 and Figure 8 In some embodiments, in order to facilitate the fixation of the support assembly 2 in the shell assembly 1 and avoid the shaking of the support assembly 2 affecting the installation and use effect of the aerosol generating article A, a first clamping structure 2331 is arranged on the side of the base portion 233 away from the insertion portion 232, and a second clamping structure 11 is arranged in the shell assembly 1. The first clamping structure 2331 and the second clamping structure 11 are clamped to fix the support assembly 2. The first clamping structure 2331 includes a first extension portion 2332 and a first clamping portion 2333 arranged continuously, and the second clamping structure 11 includes a second extension portion 111 and a second clamping portion 112 arranged continuously. The first extension portion 2332 and the second extension portion 111 both extend along the axial direction of the base portion 233 (the direction of the axis B of the accommodation cavity 21), and the first clamping portion 2333 and the second clamping portion 112 both extend along the radial direction of the base portion 233 (perpendicular to the direction of the axis B of the accommodation cavity 21) and in opposite directions. The first clamping portion 2333 and the second clamping portion 112 abut to fix the support assembly 2. In order to ensure the stability of the fixation of the support assembly 2, the first clamping structure 2331 and the second clamping structure 11 are both provided with at least two, for example, 2, 3, 4, etc., which are not limited herein. The number of the first clamping structure 2331 and the second clamping structure 11 is equal and arranged one by one. The first clamping structure 2331 and the second clamping structure 11 are arranged uniformly along the circumferential direction of the base portion 233.

[0053] In some specific embodiments, the mounting hole 231 is formed on the base 233, i.e. the airflow sensor 5 is arranged on the base 233, based on the first clamping structure 2331 comprising a first extension 2332 and the second clamping structure 11 comprising a second extension 111, when the first clamping structure 2331 is clamped with the second clamping structure 11, a certain space is formed therebetween, which can enable the airflow sensor 5 to be arranged in suspension. In order to avoid the assembly gap between the support assembly 2 and the shell assembly 1 affecting the detection result, the aerosol generating device further comprises a second sealing member 7 arranged between the base 233 and the shell assembly 1. The second sealing member 7 is a sealing ring, which can be sleeved outside the second clamping structure 11.

[0054] Please refer to Figure 4 and Figure 9 In order to better fix the aerosol generating article A, so that the aerosol generating article A can be installed concentrically (coaxially arranged with the heating cavity 211), and avoid the phenomenon of uneven heating caused by uneven installation of the aerosol generating article A in the heating cavity 211, the support assembly 2 further comprises a clamping member 25 arranged on the side of the support base 22 away from the base 23. The clamping member 25 has a plurality of clamping portions 251 protruding radially inward (perpendicular to the axis B of the accommodation cavity 21 towards the center of the accommodation cavity 21) along the radial direction of the clamping member 25, which are used to abut against the outer wall of the aerosol generating article A. The plurality of clamping portions 251 are uniformly arranged along the circumferential direction of the clamping member 25, and the clamping member 25 and the support base 22 are coaxially arranged, so that the clamping portions 251 uniformly form a plurality of clamping points along the circumferential direction of the aerosol generating article A. The clamping portions 251 can be a plurality of protruding points, protruding strips or protruding blocks protruding radially inward (perpendicular to the axis B of the accommodation cavity 21 towards the center of the accommodation cavity 21) along the radial direction of the clamping member 25. The protruding points can be conical or hemispherical. The protruding points can be provided with a plurality of protruding points in the axial direction of the clamping member 251 to form a plurality of clamping points in the axial direction of the aerosol generating article A.

[0055] Please refer to Figure 4 and Figure 10In some embodiments, the support assembly 2 further comprises an end cover 26, which is coaxially arranged on the side of the clamping member 25 away from the support base 22; a plurality of air inlet grooves 261 are arranged on the inner wall of the end cover 26, and the air inlet grooves 261 extend along the axial direction of the end cover 26 (the axial direction of the accommodation cavity 21) and are uniformly arranged along the circumferential direction of the end cover 26. The air inlet grooves 261 are respectively in communication with the heating cavity 211 and the airflow section A2 of the aerosol generating article A. When a user inhales, based on the Bernoulli negative pressure principle, external air enters the aerosol generating article A through the air inlet grooves 261, so that the air pressure of the airflow section A2 is smaller, thereby causing the deformation of the air guiding deformation member 3. The end cover 26 can have a cylindrical structure, and the air inlet grooves 261 can be formed by a plurality of grooves arranged on the inner wall of the end cover 26, or the inner wall of the end cover 26 can be arranged as a plurality of protrusions arranged at intervals, that is, the air inlet grooves 261 are formed between adjacent two protrusions. The formation of the air inlet grooves 261 is not limited to the above two ways, and there is also a space between the inner wall of the end cover 26 and the aerosol generating article A for gas to pass through.

[0056] Please refer to Figure 3 and Figure 4 In some embodiments, in order to avoid heat loss and improve heating efficiency, the aerosol generating device further comprises a reflecting member 8, which is coaxially arranged on the outside of the heating member 4 and is arranged at a distance from the heating member 4, for reflecting the heat radiation on the heating member 4. The reflecting member 8 can be made of aluminum film, copper film or silver film, or other materials with high surface smoothness, which can reflect the heat radiated to its surface to the heating member, thereby increasing the temperature of the heating member and improving the heat utilization rate. Since the thickness of the aluminum film, the copper film or the silver film is small (0.1mm-0.15mm), the heat conducted on the surface is small, and the heat loss on the reflecting member 8 can also be reduced. Of course, in other embodiments, materials with small reflectivity, high surface smoothness and good reflection effect can also be selected. The reflecting member 8 and the heating member 4 are arranged at a distance, and there is air between the reflecting member 8 and the heating member 4. The heat transferred to the reflecting member 8 can also be reduced through air conduction, because the thermal conductivity coefficient of air (0.0244W / m·K under standard conditions) is small.

[0057] The above application uses specific examples to illustrate the present application, which is only used to help understand the present application and does not limit the present application. For those skilled in the art to which the present application belongs, according to the idea of the present application, a number of simple deductions, deformations or substitutions can also be made.

Claims

1. An aerosol generating device, characterized in that, include: Housing assembly; A support assembly disposed inside the housing assembly; the support assembly having an accommodating cavity inside; A deformable element is disposed within the accommodating cavity, dividing the accommodating cavity into a heating cavity and a detection cavity, which are isolated from each other; the detection cavity is a sealed structure, and the deformable element is used to deform when the user inhales, thereby causing a change in the air pressure within the detection cavity; the heating cavity is used to contain the aerosol-generated product; An airflow sensor is disposed inside the detection chamber to acquire the air pressure change information; as well as A control circuit board, electrically connected to the airflow sensor, is used to respond to the air pressure change information and output information on the number of times the user inhales.

2. The aerosol generating apparatus according to claim 1, characterized in that, The deformable component is a flat planar structure or a curved structure that bulges towards the heating cavity.

3. The aerosol generating apparatus according to claim 1, characterized in that, The deformable component includes a plurality of protrusions and recesses, which are arranged continuously and alternately to form a wave-like shape.

4. The aerosol generating apparatus according to any one of claims 1-3, characterized in that, The support assembly includes a support base and a base, at least a portion of the base is inserted inside the support base, and the deformable element is disposed on the base; the base is provided with a mounting hole, and the airflow sensor is installed in the mounting hole.

5. The aerosol generating apparatus according to claim 4, characterized in that, The base includes an insertion part and a base part. The sidewall of the insertion part forms part of the heating cavity. The interior of the insertion part is provided with a first step structure, which is used to abut against the end of the aerosol generating product. The deformable member is disposed inside the insertion part and is interference-fitted with the insertion part. The base part is connected to the insertion part and abuts against the support base on the side facing the insertion part.

6. The aerosol generating apparatus according to claim 5, characterized in that, It also includes a heating element disposed in the accommodating cavity for heating the aerosol generating product. The side of the insertion part away from the base part is provided with a second step structure. The inner wall of the support base is provided with a limiting structure. The heating element is inserted into the interior of the insertion part, with one end abutting against the second step structure and the other end abutting against the limiting structure.

7. The aerosol generating apparatus according to claim 6, characterized in that, The bracket assembly further includes a first seal for sealing the gap between the heating element and the insertion portion; the first seal includes a first sealing portion, a second sealing portion, and a third sealing portion, the first sealing portion extending axially along the insertion portion and disposed between the inner wall of the insertion portion and the outer wall of the heating element; the second sealing portion extending radially along the insertion portion and having its two ends connected to the first sealing portion and the third sealing portion respectively; the third sealing portion extending axially along the insertion portion and fitting against the outer wall of the insertion portion.

8. The aerosol generating apparatus according to claim 5, characterized in that, The base portion is provided with a first snap-fit ​​structure on the side opposite to the insertion portion, and the housing assembly is provided with a second snap-fit ​​structure. The first snap-fit ​​structure and the second snap-fit ​​structure are snap-fitted together to fix the bracket assembly. The aerosol generating device further includes a second seal, which is disposed between the base portion and the housing assembly.

9. The aerosol generating apparatus according to claim 5, characterized in that, The support assembly further includes a clamping member disposed on the side of the support base away from the base, the clamping member having a plurality of clamping portions protruding radially inward therefrom, the clamping portions being used to abut against the outer wall of the aerosol generating article; The support assembly further includes an end cap, which is disposed on the side of the clamping member away from the support base and is coaxially disposed with the clamping member; the inner wall of the end cap is provided with a plurality of air inlet grooves, which are all extended along the axial direction of the end cap and are evenly distributed along the circumference of the end cap, and the air inlet grooves are respectively connected to the heating chamber and the airflow section of the aerosol generating product.

10. The aerosol generating apparatus according to claim 6, characterized in that, The aerosol generating device further includes a reflector, which is coaxially sleeved on the outside of the heating element and spaced apart from the heating element, for reflecting the thermal radiation on the heating element.

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