Aerosol generating device

Abstract

The present invention relates to an aerosol generating device, which includes a fixing tube for fixing an aerosol-forming substrate, an airway tube sleeved around the periphery of the fixing tube, and a heating component; the fixing tube is a hollow structure with both ends penetrating, and a first opening and a second opening communicating with the first opening are respectively provided at both ends; one end of the airway tube is provided with a supporting wall for supporting the aerosol-forming substrate, and the supporting wall is arranged opposite to the second opening; the aerosol-forming substrate can extend into the fixing tube from the first opening, and the heating component can pass through the supporting wall and be inserted into the aerosol-forming substrate from the second opening to heat the aerosol-forming substrate; when the aerosol-forming substrate withdraws from the fixing tube towards the first opening, the heating component is separated from the aerosol-forming substrate. The aerosol generating device can be quickly and conveniently pulled out from the fixing tube without damaging the aerosol-forming substrate, and has the advantage of simple disassembly and assembly.

Description

Technical Field

[0001] The present invention relates to an atomizing device, and more particularly, to an aerosol generating device. Background Art

[0002] As an emerging technology, the electronic atomizing device replaces the traditional combustible cigarette by heating e-liquid or low-temperature cigarette. It has a low working temperature, and the harmful components in the generated smoke are far less than those in the traditional combustible cigarette. Using the electronic atomizing device can greatly avoid the adverse effects of cigarettes on the human body and become a healthier way of smoking. Currently, the electronic atomizing devices on the market are mainly divided into two types. One is an electronic atomizing smoking device that forms smokable aerosol by evaporating e-liquid, and the other is an aerosol generating device that forms smokable aerosol by heating tobacco aerosol through a low-temperature non-combustion method. For the aerosol generating device, it generally inserts a heater such as a heating sheet into the aerosol-forming substrate to heat the aerosol-forming substrate. By controlling the heating temperature, the components in the aerosol-forming substrate are volatilized to generate smoke for people to inhale. When a cigarette is heated for a certain period of time and the amount of generated smoke reaches the upper limit, it is necessary to pull out the aerosol-forming substrate from the aerosol generating device, or stop suction, or replace the new aerosol-forming substrate to continue suction. At this time, how to conveniently and quickly pull out the aerosol-forming substrate from the aerosol generating device without damaging the aerosol-forming substrate and leaving no residue on the heater becomes a crucial problem. In the existing aerosol generating devices, generally, the aerosol-forming substrate is taken out of the aerosol generating device by manual pulling. Due to different forces used by users, the pulling forces vary greatly. Many users often cause problems such as the fracture of the aerosol-forming substrate and the residue of tobacco on the heating element when pulling out the cigarette. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an improved aerosol generating device.

[0004] The technical solution adopted by the present invention to solve its technical problems is to construct an aerosol generating device, which includes a fixing tube for fixing the aerosol-forming substrate, an airway tube sleeved outside the fixing tube, and a heating assembly;

[0005] The fixing tube is a hollow structure with both ends penetrating, and is respectively provided with a first opening and a second opening communicating with the first opening at both ends;

[0006] One end of the airway tube is provided with a supporting wall for supporting the aerosol-forming substrate, and the supporting wall is disposed opposite to the second opening;

[0007] The aerosol-forming substrate can extend into the fixed tube from the first opening, and the heating assembly can pass through the support wall and be inserted into the aerosol-forming substrate from the second opening to heat the aerosol-forming substrate; and the aerosol-forming substrate can withdraw from the fixed tube towards the first opening, so that the heating assembly is separated from the aerosol-forming substrate.

[0008] Preferably, the fixed tube includes a fixing portion that fixes the aerosol-forming substrate and is detachably inserted into the airway tube and is tubular; the fixing portion is a hollow structure, and an insertion channel is formed inside it;

[0009] The first opening and the second opening are respectively arranged at both ends of the fixing portion and communicate with the insertion channel.

[0010] Preferably, a gap is left between the fixing portion and the airway tube.

[0011] Preferably, through holes communicating with the airway tube are provided on the side wall of the fixing portion.

[0012] Preferably, the fixed tube further includes a mounting portion provided at the first opening of the fixing portion;

[0013] The aerosol generating device further includes an upper cover sleeved around the fixed tube and detachably connected to the mounting portion; the upper cover is detachably sleeved around the airway tube;

[0014] The upper cover is provided with a third opening opposite to the first opening.

[0015] Preferably, the upper cover and the mounting portion are provided with a connection structure for detachably connecting the upper cover and the mounting portion.

[0016] Preferably, the connection structure includes a buckle provided on the side wall of the mounting portion and a clamping groove provided inside the upper cover and corresponding to the buckle.

[0017] Preferably, it further includes a protection cover slidably arranged on the upper cover to block the third opening.

[0018] Preferably, a slider that can slide towards the third opening is provided in the cavity of the mounting portion; an elastic member is provided between the slider and the side wall of the mounting portion;

[0019] The protection cover includes a cover body;

[0020] A connecting column that can be inserted into the upper cover and connected to the slider is provided on the cover body.

[0021] Preferably, the heating component includes a heating element that can pass through the support wall and be inserted into the aerosol-forming substrate from the second opening.

[0022] Preferably, the heating element is columnar.

[0023] Preferably, the heating element includes a cylindrical main body and a pointed top structure provided at one end of the main body and having a conical shape;

[0024] The aerosol-forming substrate exits from the second opening to the first opening by rotation and is separated from the heating element.

[0025] A perforation is provided on the support wall for the heating element to penetrate into the fixed tube.

[0026] Preferably, the cross-sectional shape of the perforation is adapted to the cross-sectional shape of the heating element, and the cross-sectional dimension of the perforation is smaller than the cross-sectional dimension of the second opening.

[0027] Preferably, the heating component further includes a fixing frame for mounting the heating element;

[0028] The airway tube is slidably engaged with the fixing frame.

[0029] Preferably, the fixing frame includes a sleeve body, and the sleeve body includes a first socket portion and a second socket portion that are arranged side by side in the transverse direction with respect to the first socket portion and are connected to the first socket portion;

[0030] The height of the second socket portion is less than the height of the first socket portion, and the heating element is arranged to pass through the second socket portion.

[0031] Preferably, a first engaging portion is provided on the side wall of the first socket portion adjacent to the second socket portion;

[0032] A second engaging portion is provided on the second socket portion;

[0033] The airway tube includes a tubular main body, a first fitting portion provided on one side of the tubular main body and cooperating with the first engaging portion for engagement, and a second fitting portion provided at one end of the tubular main body and sleeved on the second engaging portion for engagement with the second engaging portion.

[0034] Preferably, an operation portion for increasing friction is provided on the side wall of the airway tube.

[0035] Preferably, it further includes a power supply component connected to the heating component.

[0036] The aerosol generating device implementing the present invention has the following beneficial effects: When in use, the aerosol forming matrix of the aerosol generating device can be inserted into the fixed tube from the first opening of the fixed tube, and the heating component can pass through the support wall of the airway tube and be inserted into the aerosol forming matrix from the second opening to heat the aerosol forming matrix. When the heating is completed, the aerosol forming matrix can be withdrawn from the fixed tube towards the first opening, and the heating component can be separated from the aerosol forming matrix. By providing the first opening and the second opening at both ends of the hollow fixed tube, the aerosol generating device can be conveniently and quickly pulled out from the fixed tube without damaging the aerosol forming matrix, and the medium on the aerosol forming matrix can be prevented from remaining in the aerosol generating device. Description of the Drawings

[0037] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0038] Figure 1 is a schematic structural diagram of the aerosol generating device in some embodiments of the present invention;

[0039] Figure 2 is Figure 1 a cross-sectional view of the aerosol generating device shown;

[0040] Figure 3 is Figure 2 a partially enlarged schematic view of the aerosol generating device shown;

[0041] Figure 4 is Figure 1 an exploded schematic structural diagram of the aerosol generating device shown;

[0042] Figure 5 is Figure 4 a schematic structural diagram of the fixed tube of the aerosol generating device shown;

[0043] Figure 6 is Figure 4 a schematic structural diagram of the airway tube of the aerosol generating device shown;

[0044] Figure 7 is Figure 4 a schematic structural diagram of the upper cover of the aerosol generating device shown. Detailed Embodiments

[0045] For a clearer understanding of the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the drawings.

[0046] It should be understood that terms such as "front", "rear", "left", "right", "upper", "lower", "first", "second", etc. are only for facilitating the description of the technical solution of the present invention, rather than indicating that the indicated device or component must have special differences, so it should not be construed as a limitation to the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0047] Figure 1 and Figure 2 show some preferred embodiments of the aerosol generating device of the present invention. The aerosol generating device can heat the aerosol forming substrate 100 by means of low-temperature heating without combustion. In some embodiments, the aerosol forming substrate 100 can be a cigarette stick.

[0048] Such as Figure 1 and Figure 2 As shown, the aerosol generating device includes a housing assembly, an airway tube 20, an air flow channel, and a heating assembly 50. The housing assembly includes a fixing tube 10 and an upper cover 30. The fixing tube 10 is disposed in the upper cover 30 and is detachably connected to the upper cover 30, and is connected to the upper cover 30 through a connecting assembly to form an integral structure. Of course, it can be understood that in some other embodiments, the fixing tube 10 can be integrally formed with the upper cover 30, for example, integrally formed with the upper cover 30 by injection molding or casting. The fixing tube 10 is used to fix the aerosol forming substrate 100. The airway tube 20 is disposed in the upper cover 30 and is sleeved around the fixing tube 10 for forming an air flow channel for gas to flow through. The upper cover 30 is detachably sleeved around the airway tube 20 and the heating assembly 50. The air flow channel is in communication with the outside, and the air flow channel can allow external gas to enter the aerosol forming substrate 100 in the fixing tube 10. The heating assembly 50 can be detachably connected to the fixing tube 10. The heating assembly 50 is used to insert into the aerosol forming substrate 100 in the fixing tube 10 and is used to heat the aerosol forming substrate 100.

[0049] Such as Figures 2 to 5 As shown, further, in some embodiments, the fixing tube 10 is a hollow structure with both ends penetrating, for the aerosol forming substrate 100 to pass through. Further, in some embodiments, the fixing tube 10 includes a fixing portion 11 and an installation portion 12. The fixing portion 11 is used to fix the aerosol forming substrate 100, and the installation portion 12 is disposed at one end of the fixing portion 11 and can be cooperatively installed with the upper cover 30.

[0050] In some embodiments, the fixing part 11 is tubular, hollow and through at both ends, with an insertion channel formed inside. Specifically, the fixing part 11 is circular tubular, and the insertion channel is cylindrical for the aerosol-forming substrate 100 to be inserted. The two ends of the fixing tube 10 are respectively provided with a first opening 111 and a second opening 112. Specifically, in some embodiments, the first opening 111 and the second opening 112 are respectively arranged at the two ends of the fixing part 11, symmetrically arranged along the axis, and communicate with the insertion channel. The aerosol-forming substrate 100 can be inserted into the fixing tube from the first opening 111 and withdrawn from the fixing tube 10 towards the first opening 111. Specifically, the aerosol-forming substrate 100 can be inserted into the second opening 112 and also withdrawn from the second opening 112 towards the first opening 111. In some other embodiments, the length of the aerosol-forming substrate 100 is greater than the distance between the first opening 111 and the second opening 112, and the aerosol-forming substrate 100 can also abut against the support wall of the airway tube 20 beyond the second opening. In some other embodiments, the aerosol-forming substrate 100 may not reach the second opening. Specifically, in some embodiments, the first opening 111 can be a flared opening, and the radial dimension of the first opening 111 can be gradually decreased in the direction of the second opening 112 to facilitate the insertion of the aerosol-forming substrate 100. Further, in some embodiments, through holes 113 are provided on the side wall of the fixing part 11. There may be multiple through holes 113. Specifically, in some embodiments, the multiple through holes 113 are divided into three groups, and the three groups of through holes 113 are arranged side by side along the axis of the fixing part 11. Each group of through holes 113 includes three through holes 113 spaced circumferentially along the fixing part 11, and each through hole 113 is a strip-shaped hole. It can be understood that in some other embodiments, the through holes 113 are not limited to multiple, and can be one or can be omitted. By providing the through holes 113, the contact area between the aerosol-forming substrate 100 and the fixing tube 10 can be reduced, and the heat conduction of the aerosol-forming substrate 100 can be reduced.

[0051] In some embodiments, the mounting part 12 is arranged at the first opening 111 of the fixing part 11, and its cross-section can be oval, and its cross-sectional shape and size can be adapted to the cross-sectional shape and size inside the upper cover 30. The mounting part 12 includes a cavity 121 and a side wall 122. An opening is provided on the top surface of the cavity 121, and the opening can communicate with the third opening 31 on the upper cover 30. The cavity 121 can be communicated with the insertion channel of the fixing part 11. The side wall 122 is arranged on the periphery of the cavity 121, connected to the tube wall of the fixing part 11, and integrally formed with the fixing part 11. Specifically, in some embodiments, it can be integrally formed with the fixing part 11 by casting or injection molding.

[0052] In some embodiments, air inlets 13 are provided on the bottom wall of the mounting portion 12 and the side wall of the fixing portion 11. There may be two air inlets 13. One of the air inlets 13 may be provided on the side wall of the fixing portion 11, and the other air inlet 13 may be provided on the bottom wall of the mounting portion 12 and extend towards the side wall of the fixing portion 11. It can be understood that, in some other embodiments, the number of the air inlets 13 may not be limited to two, and they are not limited to being provided on the bottom wall of the mounting portion 12 or the side wall of the fixing portion 11. In some embodiments, the cavity 121 communicates with the air inlet 13 to form a first air inlet passage 120.

[0053] Such as Figures 2 to 6As shown, further, in some embodiments, the airway tube 20 is sleeved around the periphery of the fixing portion 11, and a gap is left between it and the fixing portion 11. The air inlet 13 communicates with the gap. On the one hand, the gap can play a heat insulation role during heating. On the other hand, it can be used to accommodate the residue of the aerosol-forming matrix 100 after heating. When cleaning the residue, the upper cover 30 can be slid and the fixing tube 10 can be pulled out of the airway tube 20 at the same time, and then the residue in the airway tube 20 can be poured out. The height of the airway tube 20 can be greater than or equal to the height of the fixing portion 11. The airway tube 20 includes a tubular main body 21, and the tubular main body 21 is sleeved around the periphery of the fixing portion 11. The inner side of the tubular main body 21 is cylindrical. The radial dimension of the airway tube 20 can be greater than the radial dimension of the fixing portion 11, and a gap is left between the airway tube 20 and the fixing portion 11 to form a second air inlet passage 210 communicating with the first air inlet passage 120. In some embodiments, a support wall 211 can be provided at one end of the airway tube 20. Specifically, in some embodiments, the support wall 211 is provided at one end of the tubular main body 21 and is disposed opposite to the second opening 112, and it can be used to support the aerosol-forming matrix 100. A perforation 2111 is further provided on the support wall 211. The cross-sectional shape of the perforation 2111 can be adapted to the cross-sectional shape of the heating element 51 of the heating assembly 50. In some embodiments, the perforation 2111 is circular and can be used for the heating assembly 50 to penetrate into the fixing tube 10, facilitating the insertion of the heating element 51 of the heating assembly 50 into the aerosol-forming matrix 100. In some embodiments, the cross-sectional dimension of the perforation 2111 is smaller than the cross-sectional dimension of the second opening 112, thereby avoiding the aerosol-forming matrix 100 from passing through the airway tube 20. Two support bosses 212 are provided on the support wall 211. The two support bosses 212 can be located inside the tubular main body 21, and the two support bosses 212 are respectively located on two opposite sides of the perforation 2111. The interval between the two support bosses 212 forms a third air inlet passage 213 communicating with the second air inlet passage 210. The third air inlet passage 213 is disposed opposite to the second opening 112 and can communicate with the second opening 112, thereby facilitating the entry of gas into the aerosol-forming matrix 100 in the fixing tube 10. It can be understood that in some other embodiments, the number of the support bosses 212 can be more than two, and it can be multiple.

[0054] In some embodiments, the airway tube 20 further includes a first fitting portion 22 protruding outwardly on one side of the tubular main body 21 and a second fitting portion 23 protruding at one end of the tubular main body 21. Both the first fitting portion 22 and the second fitting portion 23 can be slidably engaged with the heating assembly 50, thereby detachably connecting the entire airway tube 20 to the heating assembly 50.

[0055] In some embodiments, an operation part 24 is provided on the side wall of the airway tube 20. The operation part 24 can be a plurality of strip-shaped grooves, which can form finger positions for the user to place their fingers, so as to increase the friction between the user's fingers and the airway tube 20, and thus facilitate the user to disassemble and assemble the airway tube 20.

[0056] As Figures 2 to 4 and Figure 7 shown, further, in some embodiments, the upper cover 30 is detachably sleeved on the periphery of the airway tube 20. A third opening 31 is provided on the upper cover 30. The third opening 31 can be provided on the top surface of the upper cover 30, communicate with the cavity 121, and be oppositely arranged with the first opening 111. The aerosol formation matrix 100 can extend into the first opening 111 from the third opening 31 and extend to the second opening 112. An air inlet groove 311 can be provided on the inner side wall of the third opening 31. The air inlet groove 311 can be a plurality of, and can be arranged at intervals along the circumferential direction of the third opening 31, communicate with the first air inlet passage 120, and be used for allowing external gas to enter the first air inlet passage 120.

[0057] In some embodiments, a connection structure is provided on the upper cover 30 and the mounting part 12. The connection structure is used to detachably connect the upper cover 30 and the mounting part 12. In some embodiments, the connection structure includes a buckle 1221 and a clamping groove 32. The buckle 1221 can be provided on the side wall 122 of the mounting part 12, and there can be a plurality of them. Specifically, in some embodiments, the buckle 1221 can be four, and the four buckles 1221 can be arranged at intervals along the circumferential direction of the side wall 122. The clamping groove 32 is provided on the inner side of the upper cover 30 and is close to the top wall of the upper cover 30. There can be a plurality of them, which are correspondingly arranged with the buckle 1221 and can be clamped with the buckle 1221. During installation, the upper cover 30 can be sleeved on the periphery of the airway tube 20 along the mounting part 12, and the buckles 1221 of the mounting part 12 can be correspondingly clamped into the clamping grooves 32 one by one. Through this connection structure, when the upper cover 30 is slid, the fixed tube 10 can be taken out of the airway tube 20 at the same time.

[0058] Further, in some embodiments, the air flow channel includes a first intake channel 120, a second intake channel 210, and a third intake channel 213. The first intake channel 120 is disposed in the housing assembly, and it may be located in the upper cover 30 and communicate with the outside. Specifically, the first intake channel 120 may be formed by an intake groove 311 on the third opening 31, a cavity 121 inside the mounting portion 12, and an air inlet 13 on the fixing portion 11. The second intake channel 210 may be disposed between the airway tube 20 and the fixing tube 10 and communicate with the first intake channel 120 and the fixing tube 10. Specifically, the second intake channel 210 is disposed between the tubular body 21 and the fixing portion 11, formed by the gap between the tubular body 21 and the fixing portion 11, and communicates with the second opening 112 and the air inlet 13, allowing air flow to enter the aerosol formation matrix 100 in the fixing tube 10. The third intake channel 213 is formed between the two support bosses 212 of the airway tube 20 and communicates with the second opening 112. When the user sucks, the outside air can sequentially pass through the support wall 211 between the fixing tube 10 and the airway tube 20 and then enter the aerosol formation matrix 100 of the fixing tube 10 from the second opening 112. Specifically, when the user sucks the atomized gas, the outside air can enter the first intake channel 120 from the intake groove 311, then enter the second intake channel 210 from the air inlet 13, then change direction through the support wall 211, enter the third intake channel 213, and then enter the inside of the aerosol formation matrix 100 from the second opening 112, and finally be delivered to the user's mouth. By providing the second intake channel 210 between the airway tube 20 and the fixing tube 10, on the one hand, it can prevent the heat of the heating assembly 50 from being transferred to the side wall of the upper cover 30, so that the temperature of the side wall of the upper cover 30 is too high and causes discomfort to the user when holding, and on the other hand, it can simplify the structure of the air flow channel, shorten the air flow transmission path, and avoid blockage.

[0059] For another example Figures 2 to 4As shown, further, in some embodiments, the aerosol generating device further includes a protective cover 40. The protective cover 40 is slidably disposed on the upper cover 30. When there is no aerosol forming substrate 100 inserted into the fixing tube 10, it can slidably block the third opening 31 through sliding, thereby preventing dust from entering the fixing tube 10. In some embodiments, the protective cover 40 includes a cover body 41. The cover body 41 can be disposed on the top wall of the upper cover 30 and can reciprocally slide in the direction towards the third opening 31. The cover body 41 is provided with a connecting column 411. The connecting column 411 can be inserted into the upper cover 30. The upper cover 30 is provided with a guiding hole 312. The guiding hole 312 is communicated with the third opening 31. The guiding hole 312 can be a strip-shaped hole. The connecting column 411 can be inserted into the upper cover 30 from the guiding hole 312. A slider 42 can be disposed in the cavity 121 of the mounting portion 12. The slider 42 can be slidably disposed in the direction towards the third opening 31. The connecting column 411 can be connected to the slider 42 and drive the slider 42 to slide. An elastic member 43 can be disposed between the slider 42 and the side wall of the mounting portion 12. The elastic member 43 can generate an elastic force to facilitate the sliding and resetting of the slider 42.

[0060] Further, in some embodiments, the heating assembly 50 includes a heating element 51. The heating element 51 can pass through the support wall 211 and be inserted into the aerosol forming substrate 100 from the second opening 112. Specifically, in some embodiments, the heating element 51 can pass through the through hole 2111. In some embodiments, the heating element 51 can be columnar. Of course, it can be understood that in some other embodiments, the heating element 51 is not limited to being columnar and can be sheet-shaped. In some embodiments, the heating element 51 includes a cylindrical body 511 and a pointed top structure 512. The pointed top structure 512 is disposed at one end of the body 511 and can facilitate the insertion of the heating element 51 into the aerosol forming substrate 100. The pointed top structure 512 can be conical. By setting the body 511 of the heating element 51 to be cylindrical and the pointed top structure 512 to be conical, the aerosol forming substrate 100 can be withdrawn from the second opening 112 towards the first opening 111 and separated from the heating element 51 by rotation, thereby facilitating the disassembly and replacement of the aerosol forming substrate 100.

[0061] Further, in some embodiments, the heating assembly further includes a fixing bracket 52. The fixing bracket 52 is for the heating element 51 to be installed, can be slidably engaged with the airway tube 20, and can be sleeved by the upper cover 30. The fixing bracket 52 is a sleeve body, and the sleeve body includes a first socket portion 521 and a second socket portion 522. The first socket portion 521 and the second socket portion 522 are arranged side by side in the transverse direction and are integrally formed. Specifically, in some embodiments, the first socket portion 521 and the second socket portion 522 are integrally formed by injection molding or casting. The inner side of the first socket portion 521 can accommodate the control circuit board 60. The control circuit board 60 can be connected to the heating assembly 50 and can be used to turn on or off the heating assembly 50. A first engaging portion 5211 is provided on the side wall where the first socket portion 521 is adjacent to the second socket portion 522. The first engaging portion 5211 can be a clamping boss provided on the first socket portion 521 and can be engaged and fixed with a first mating portion 22 provided on one side of the tubular body 21. Specifically, a first sliding groove can be formed inside the first mating portion 22, and the first sliding groove can be engaged with the clamping boss by sliding. The height of the second socket portion 522 is less than the height of the first socket portion 521, and the heating element 51 can pass through the second socket portion 522 and be arranged. The airway tube 20 can be arranged on the top of the second socket portion 522. A second engaging portion 5221 is provided on the second socket portion 522. The second engaging portion 5221 can be a clamping boss, and the clamping boss can be engaged with a second mating portion 23 provided at one end of the tubular body 21. Specifically, a second sliding groove can be formed inside the second mating portion 23, and the second sliding groove can be engaged with the clamping boss by sliding. During installation, the first mating portion 22 of the airway tube 20 can be sleeved on the first engaging portion 5211, the second mating portion 23 can be sleeved on the second engaging portion 5221, and slide longitudinally along the first engaging portion 5211 and the second engaging portion 5221 until the support wall of the tubular body of the airway tube 20 abuts against the bottom wall of the second engaging portion 5221. In some embodiments, the fixing bracket 52 further includes a flange 523 that cooperates with the upper cover 30. The flange 523 abuts against the outer peripheral walls of the first socket portion 521 and the second socket portion 522.

[0062] Further, in some embodiments, the heating assembly 50 further includes a bracket 53 that is cooperatively installed with the fixing bracket 52, and the fixing bracket 52 can be sleeved on the bracket 53. The heating element 51 can be arranged on the bracket 53.

[0063] Further, in some embodiments, the aerosol generating device further includes a power supply assembly 70. The power supply assembly 70 is mechanically and electrically connected to the heating assembly 50 for supplying power to the heating assembly 50. The power supply assembly 70 includes a power supply housing 71 and a battery 72 disposed in the power supply housing 71. The fixing bracket 52 can be disposed at the open end of the power supply housing 71. A switch button 711 can be disposed on the power supply housing 71, and the switch button 711 can be connected to the control circuit board 60. The battery 72 can be connected to the heating assembly 50 and supply power to the heating assembly 50. Specifically, in some embodiments, the battery 72 can be connected to the heating assembly 50 through the control circuit board 60.

[0064] When the aerosol generating device is in use, when heating is required, the aerosol forming substrate 100 can be inserted from the first opening 111 into the second opening 112 through the third opening 31, or the aerosol forming substrate 100 can be inserted from the first opening 111 into the fixing tube 10 through the third opening 31 and extend out from the second opening 112 to abut against the support wall 211. At the same time, the heating element 51 of the heating assembly 50 can pass through the support wall 211 and be inserted into the aerosol forming substrate 100 from the second opening 112, so as to heat the aerosol forming substrate 100. When the heating is completed, the aerosol forming substrate 100 can be rotated to withdraw the aerosol forming substrate 100 from the second opening 112 to the first opening 111, and then separated from the heating element 51 of the heating assembly 50. Of course, it can be understood that in some other embodiments, a smoke pushing mechanism can also be provided to push the aerosol forming substrate 100 out from the second opening 112.

[0065] It should be understood that the above embodiments only represent the preferred embodiments of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. An aerosol generating device, characterized in that, It includes a fixing tube (10) for fixing an aerosol - forming substrate (100), an airway tube (20) sleeved around the periphery of the fixing tube (10), and a heating assembly (50); The fixing tube (10) has a hollow and through - both - ends structure, with a first opening (111) and a second opening (112) communicated with the first opening (111) respectively at both ends; One end of the airway tube (20) is provided with a support wall (211) for supporting the aerosol - forming substrate (100), and the support wall (211) is arranged opposite to the second opening (112); The aerosol - forming substrate (100) extends into the fixing tube (10) from the first opening (111). The heating assembly (50) includes a heating element (51) and a fixing frame (52) for installing the heating element (51); the heating element (51) passes through the support wall (211) and is inserted into the aerosol - forming substrate (100) from the second opening (112) to heat the aerosol - forming substrate (100); and the aerosol - forming substrate (100) withdraws from the fixing tube (10) towards the first opening (111) to separate the heating assembly (50) from the aerosol - forming substrate (100); The aerosol - generating device further includes an upper cover (30); the upper cover (30) is sleeved around the periphery of the fixing tube (10); the upper cover (30) is detachably sleeved around the periphery of the airway tube (20); the upper cover (30) is provided with a third opening (31) arranged opposite to the first opening (111); The airway tube (20) is slidably engaged with the fixing frame (52).

2. The aerosol generating device according to claim 1, characterized in that, The fixing tube (10) includes a fixing part (11) for fixing the aerosol - forming substrate (100), which is detachably inserted into the airway tube (20) and is tubular; the fixing part (11) is a hollow structure, and an insertion channel is formed inside it; The first opening (111) and the second opening (112) are respectively arranged at both ends of the fixing part (11) and are communicated with the insertion channel.

3. The aerosol generating device according to claim 2, characterized in that, A gap is formed between the fixing part (11) and the airway tube (20).

4. The aerosol generating device according to claim 2, characterized in that, A through - hole (113) communicated with the airway tube (20) is provided on the side wall of the fixing part (11).

5. The aerosol generating device according to claim 2, characterized in that, The fixing tube (10) further includes an installation part (12) arranged at the first opening (111) of the fixing part (11); The upper cover (30) is detachably connected to the installation part (12).

6. The aerosol generating device according to claim 5, characterized in that, The upper cover (30) and the installation part (12) are provided with a connection structure for detachably connecting the upper cover (30) and the installation part (12).

7. The aerosol generating device according to claim 6, characterized in that, The connection structure includes a buckle (1221) arranged on the side wall (122) of the installation part (12), and a clamping groove (32) arranged inside the upper cover (30) and corresponding to the buckle (1221).

8. The aerosol generating device according to claim 7, characterized in that, It further includes a protection cover (40) slidably arranged on the upper cover (30) to block the third opening (31).

9. The aerosol generating device according to claim 8, characterized in that, A slider (42) slidably arranged in the direction of the third opening (31) is provided in the cavity (121) of the installation part (12); an elastic member (43) is provided between the slider (42) and the side wall (122) of the installation part (12); The protective cover (40) includes a cover body (41); A connecting column (411) inserted into the upper cover (30) and connected to the slider (42) is provided on the cover body (41).

10. The aerosol generating device according to claim 9, characterized in that, The heating element (51) is columnar.

11. The aerosol generating device according to claim 10, characterized in that, The heating element (51) includes a cylindrical body (511) and a pointed top structure (512) arranged at one end of the body (511) and in a conical shape; The aerosol-forming substrate (100) exits from the second opening (112) to the first opening (111) by rotation and is separated from the heating element (51).

12. The aerosol generating device according to claim 11, characterized in that, A perforation (2111) for the heating element (51) to penetrate into the fixed tube (10) is provided on the support wall.

13. The aerosol generating device according to claim 12, characterized in that, The cross-sectional shape of the perforation (2111) is adapted to the cross-sectional shape of the heating element (51), and the cross-sectional dimension of the perforation (2111) is smaller than the cross-sectional dimension of the second opening (112).

14. The aerosol generating device according to claim 13, characterized in that, The fixing bracket (52) includes a sleeve body, and the sleeve body includes a first socket part (521) and a second socket part (522) arranged side by side with the first socket part (521) in the transverse direction and connected to the first socket part (521); The height of the second socket part (522) is smaller than the height of the first socket part (521), and the heating element (51) is arranged to pass through the second socket part (522).

15. The aerosol generating device according to claim 14, characterized in that, A first engaging part (5211) is provided on the side wall of the first socket part (521) adjacent to the second socket part (522); A second engaging part (5221) is provided on the second socket part (522); The airway tube (20) includes a tubular main body (21), a first engaging part (22) arranged on one side of the tubular main body (21) and cooperating with the first engaging part (5211) for engagement, and a second engaging part (23) arranged at one end of the tubular main body (21) and sleeved on the second engaging part (5221) for engagement with the second engaging part (5221).

16. The aerosol generating device according to claim 1, characterized in that, An operation part (24) for increasing friction is provided on the side wall of the airway tube (20).

17. The aerosol generating device according to claim 1, characterized in that, It further includes a power supply component (70) connected to the heating component (50).

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