Aerosol-generating device

Abstract

The utility model relates to an aerosol generating device, which comprises a shell assembly, an aerosol generating device and a control device, wherein an assembly opening is formed in the shell assembly; the heating assembly is located in the shell assembly, the heating assembly comprises a containing cavity used for containing an aerosol generating product and a heating element used for providing energy to heat the aerosol generating product to generate aerosol, and the containing cavity is arranged corresponding to the assembling opening; a positioning hole is formed in the positioning piece; the pushing assembly comprises a positioning part, the pushing assembly is configured to move between a first position and a second position relative to the heating assembly, and in the process that the pushing assembly moves from the first position to the second position, the pushing assembly moves towards the assembling opening, so that at least part of the aerosol generating product is pushed out of the containing cavity; wherein at least one of the inner wall of the positioning hole and the outer surface of the positioning part comprises an inclined plane, the area limited by the near end of the inclined plane is smaller than the area limited by the far end of the inclined plane, and the positioning part is configured to be at least partially reset to the first position in the process that the pushing assembly resets to the first position. The pushing assembly moves in the positioning hole in the direction from the far end of the positioning hole to the near end of the positioning hole and abuts against the inner wall of the positioning hole when the pushing assembly is located at the first position.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of aerosol generation, and particularly to an aerosol generating device. Background Art

[0002] An aerosol generating device is a device capable of generating smoke from a tobacco product. In some exemplary prior arts, the aerosol generating device includes a housing with a tobacco product receiving cavity provided therein and a heating element for heating the tobacco product, and further includes a pushing mechanism capable of moving relative to the receiving cavity and a bracket slidably connected to the pushing mechanism to define a sliding trajectory. When the pushing mechanism moves along a preset direction, it can push the tobacco product out of the receiving cavity, so as to facilitate the user to take out the tobacco product. After that, the pushing mechanism can be reset. Among them, the pushing mechanism is in interference fit with the bracket to ensure that the pushing mechanism can be radially supported by the bracket after reset, so that the pushing mechanism does not shake after reset.

[0003] However, on the one hand, this will undoubtedly cause greater wear on the pushing mechanism. After long-term use, the pushing mechanism will inevitably shake after reset; on the other hand, this will result in a relatively large frictional resistance between the pushing mechanism and the bracket, and a relatively large sense of blockage will be generated during the process of the user manually driving the pushing mechanism to push the tobacco product out of the receiving cavity. This brings an adverse user experience. Summary of the Utility Model

[0004] The purpose of the present application is to provide an aerosol generating device, which can reduce the wear on the reset component and the sense of blockage during the process of pushing the aerosol generating product out of the receiving cavity, and can prevent the driving mechanism from shaking after the pushing component is reset to the first position.

[0005] An aerosol generating device provided by some embodiments of the present application includes:

[0006] A housing assembly, on which an assembly opening is provided;

[0007] A heating assembly, located within the housing assembly, the heating assembly including a receiving cavity for accommodating an aerosol generating product and a heating element for providing energy to heat the aerosol generating product to generate an aerosol, the receiving cavity corresponding to the assembly opening, and the assembly opening being used for the aerosol generating product to exit the housing assembly from the receiving cavity;

[0008] A positioning member, on which a positioning hole is provided; and

[0009] A pushing component, including a positioning portion, the pushing component is configured to be movable relative to the heating component between a first position and a second position, and during the process of the pushing component moving from the first position to the second position, the pushing component moves towards the assembly opening to push at least a part of the aerosol generating article out of the accommodating cavity;

[0010] Wherein, at least one of the inner wall of the positioning hole and the outer surface of the positioning portion includes an inclined surface, the area defined by the proximal end of the inclined surface is smaller than the area defined by the distal end thereof, and the positioning portion is configured to move in the positioning hole along the direction from the distal end of the positioning hole to the proximal end of the positioning hole during at least part of the process of the pushing component resetting to the first position, and abut against the inner wall of the positioning hole when the pushing component is located at the first position.

[0011] As an example, the aerosol generating device further includes a resetting component, the resetting component is in interference fit with the pushing component to drive the pushing component to reset to the first position.

[0012] As an example, the pushing component includes an operating portion and a first moving member that is in interference fit with the resetting component;

[0013] The operating portion is configured to be operable by a user, thereby driving the pushing component to move longitudinally from the first position to the second position;

[0014] The positioning portion is provided on the first moving member, and at least a part of the operating portion is configured to enter the positioning hole from the proximal end of the positioning hole during at least part of the process of the pushing component moving from the first position to the second position.

[0015] As an example, the operating portion includes a mouthpiece assembly.

[0016] As an example, the first moving member is detachably connected to the positioning member, and the first moving member is configured to be longitudinally spaced from the positioning member when the pushing component is located at the second position.

[0017] As an example, the aerosol generating device further includes a bracket provided between the positioning member and the heating component;

[0018] The first moving member is movably provided in the bracket to be laterally blocked by the bracket during the process of the pushing component moving relative to the heating component.

[0019] As an example, the bracket includes a first stop wall extending in the longitudinal direction and a second stop wall extending in the longitudinal direction, and the first stop wall and the second stop wall are arranged at intervals in the transverse direction;

[0020] The pushing assembly also includes a second moving member that is arranged in linkage with the first moving member. The first stopping wall is used to stop the first moving member in the lateral direction, and the second stopping wall is used to stop the second moving member in the lateral direction.

[0021] As an example, the second stop wall is configured to be spaced apart from the first moving member when the pushing assembly is located at the first position, and to abut against the first moving member when the pushing assembly is located at the second position to prevent the pushing assembly from continuing to move longitudinally.

[0022] As an example, the reset assembly is disposed between the first stop wall and the second stop wall.

[0023] As an example, the aerosol generating device further includes a nozzle and a first end cap assembly connected to one end of the heating assembly, the first end cap assembly includes a support base and a first sealing member fixed to the support base, and a through hole is formed on the first sealing member;

[0024] The pushing assembly comprises an air guide tube, at least a part of which is movably disposed in the through hole, and the air guide tube fluid is connected to the suction nozzle and the accommodating cavity;

[0025] Wherein, the air duct includes a first part and a second part, the outer diameter of the second part is larger than the outer diameter of the first part; the air duct is configured so that when the pushing assembly is in the first position, the second part is located in the through hole and is sealingly connected to the first sealing member, and when the pushing assembly is in the second position, the first part is located in the through hole.

[0026] As an example, the air guide tube further includes a third portion, the second portion is located between the first portion and the third portion, and an outer diameter of the third portion is smaller than an outer diameter of the second portion;

[0027] When the pushing assembly is located at the first position, the third portion is located outside the accommodating cavity. When the pushing assembly is located at the second position, at least a portion of the third portion is located in the accommodating cavity or passes through the accommodating cavity.

[0028] As an example, the pushing component further includes a filter connected to the third part.

[0029] As an example, at least a part of the second part is configured to be located in the first end cap assembly and spaced apart from the first end cap assembly when the pushing component is in the second position.

[0030] As an example, the heating component includes a tubular body disposed at least partially around the accommodation cavity;

[0031] The aerosol generating device further includes a first end cap assembly, the first end cap assembly and the assembly port are disposed on opposite sides of the accommodation cavity, and the aerosol generating device further includes a mouthpiece assembly fluidly connected to the accommodation cavity;

[0032] The first end cap assembly includes an embedded part disposed inside the tubular body, a notch is formed at an end of the embedded part facing the assembly port, and the notch is fluidly connected to the mouthpiece assembly.

[0033] As an example, the embedded part is disposed closely against the inner wall of the tubular body.

[0034] An aerosol generating device provided by some embodiments of the present application includes:

[0035] A housing assembly having an assembly port formed thereon;

[0036] A heating component located inside the housing assembly, the heating component includes an accommodation cavity for accommodating an aerosol generating article and a heating element for providing energy to heat the aerosol generating article to generate an aerosol, the accommodation cavity corresponds to the assembly port, and the assembly port is for the aerosol generating article to exit the housing assembly from the accommodation cavity;

[0037] A first end cap assembly connected to one end of the heating component, the first end cap assembly includes a support seat and a first seal fixed on the support seat, and a through hole is formed on the first seal;

[0038] A mouthpiece and an air duct, at least a part of the air duct is movably disposed in the through hole, and the air duct fluidly connects the mouthpiece and the accommodation cavity;

[0039] The air duct is configured to be movable relative to the heating component between a first position and a second position, and during the movement from the first position to the second position, move towards the assembly port to push at least a part of the aerosol generating article out of the accommodation cavity;

[0040] Wherein, the air duct includes a first part and a second part, and the outer diameter of the second part is greater than that of the first part; the air duct is configured such that when it is in the first position, the second part is located in the through hole and is sealingly connected to the first seal, and when it is in the second position, the first part is located in the through hole.

[0041] An aerosol generating device provided by some embodiments of the present application includes:

[0042] A mouthpiece assembly;

[0043] A heating assembly, including a receiving cavity for accommodating an aerosol generating article and a heating element for providing energy to heat the aerosol generating article to generate an aerosol, and further including a tubular body disposed at least partially around the receiving cavity; and

[0044] A first end cap assembly, including an embedded portion disposed inside the tubular body, and a notch is formed at an end of the embedded portion, and the notch is in fluid communication with the mouthpiece assembly.

[0045] The above aerosol generating device includes a housing assembly, a heating assembly, a positioning member, and a pushing assembly; an assembly opening is formed on the housing assembly; the heating assembly is located inside the housing assembly and includes a receiving cavity for accommodating an aerosol generating article and a heating element for heating the aerosol generating article to generate an aerosol, the receiving cavity corresponds to the assembly opening, and the assembly opening is used for the aerosol generating article to exit the housing assembly from the receiving cavity; a positioning hole is provided on the positioning member; the pushing assembly includes a positioning portion; the pushing assembly is configured to be movable relative to the heating assembly between a first position and a second position, and during the process of the pushing assembly moving from the first position to the second position, the pushing assembly moves towards the assembly opening to push at least a part of the aerosol generating article out of the receiving cavity; wherein, at least one of the positioning hole and the positioning portion has an inclined surface, the area defined by the proximal end of the inclined surface is smaller than the area defined by the distal end thereof, and the positioning portion is configured to move in the positioning hole along the direction from the distal end to the proximal end of the positioning hole during at least a part of the process of the pushing assembly moving from the second position to the first position, and abut against the inner wall of the positioning hole when the pushing assembly is in the first position. Thus, based on the fact that the area defined by the proximal end of the inclined surface is smaller than the area defined by the distal end thereof, there is no contact between the positioning surface and the inner wall of the positioning hole during the process of the pushing assembly moving from the first position to the second position and during the process of the pushing assembly moving from the second position to the first position, so that the friction and the resistance generated by the friction between the positioning surface and the positioning hole can be reduced; and after the pushing assembly is reset to the first position, the positioning portion can be abutted by the inner wall of the positioning hole in a converging manner, thereby effectively preventing the pushing assembly from shaking in the first position. Description of the Drawings

[0046] To more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0047] Figure 1 is a schematic diagram of an aerosol generating device provided by an embodiment of the present application;

[0048] Figure 2 is a schematic diagram of the pushing assembly in the aerosol generating device provided by an embodiment of the present application when it is in the first position;

[0049] Figure 3 is a schematic diagram of the pushing assembly in the aerosol generating device provided by an embodiment of the present application when it is in the second position;

[0050] Figure 4 is a schematic diagram of the mouthpiece assembly in the aerosol generating device provided by an embodiment of the present application;

[0051] Figure 5 is a schematic diagram of the first moving member in the aerosol generating device provided by an embodiment of the present application;

[0052] Figure 6 is a cross-sectional view of the aerosol generating device provided by an embodiment of the present application;

[0053] Figure 7 is a schematic diagram of the second seal engaged with the tubular body provided by an embodiment of the present application;

[0054] Figure 8 is a schematic diagram of the second seal separated from the tubular body provided by an embodiment of the present application;

[0055] In the figure:

[0056] 1. Housing assembly; 11. Assembly port; 12. Bottom cover;

[0057] 2. Heating assembly; 21. Accommodation cavity; 22. Tubular body;

[0058] 3. Pushing assembly; 31. Mouthpiece assembly; 311. Mouthpiece; 312. Air duct; 3121. First part; 3122. Second part; 3123. Third part; 313. Filter screen; 32. First moving member; 321. Positioning part; 322. Buckle part; 33. Second moving member; 34. Operating part.

[0059] 4. Reset assembly;

[0060] 5. Bracket; 51. First stop wall; 511. Guide groove; 52. Second stop wall;

[0061] 6. Positioning member; 61. Positioning hole;

[0062] 7. First end cover assembly; 71. Support seat; 72. First seal; 721. Through hole; 73. Second seal; 731. Embedded portion; 7311. Notch; 732;

[0063] 8. Blocking plug; 9. Second end cover assembly. Detailed implementation manners

[0064] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0065] The terms "first", "second", and "third" in the present application are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity or order of the indicated technical features. All directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present application are only used to explain the relative positional relationship or movement situation between components in a specific posture (as shown in the drawings). If the specific posture changes, then the directional indication also changes accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0066] Referring to "embodiment" in this article means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art understand explicitly and implicitly that the embodiments described herein can be combined with other embodiments.

[0067] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element, or there may be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0068] Please refer to Figures 1 - 3 , an embodiment of the present application provides an aerosol generating device, which is a device capable of generating an aerosol from an aerosol generating article.

[0069] In some embodiments, the aerosol generating article includes a solid aerosol-forming matrix, and the solid aerosol-forming matrix can release volatile compounds that can form an aerosol when reaching a certain temperature. Compared with the aerosol generated by burning or pyrolytic degradation of the aerosol-forming matrix, the aerosol formed by heating the solid aerosol-forming matrix may contain fewer known harmful components. In one embodiment, the aerosol generating article can be removably coupled to the aerosol generating device. The aerosol generating article can be disposable or reusable.

[0070] The solid aerosol-forming matrix may include a tobacco-containing material, and the tobacco-containing material contains volatile tobacco flavor compounds released from the matrix when heated. The solid aerosol-forming matrix may include a non-tobacco material. The solid aerosol-forming matrix may include a tobacco-containing material and a non-tobacco material. When the aerosol-forming matrix is a solid aerosol-forming matrix, the aerosol generating article can be a tobacco block, a cigarette, a smoking rod or a cigar, etc.

[0071] In some embodiments, the aerosol generating article includes a liquid aerosol-forming matrix, and the liquid aerosol-forming matrix may contain a liquid containing a tobacco-containing substance with volatile tobacco flavor components, and may also contain a liquid of a non-tobacco substance. The liquid aerosol matrix may contain water, a medicinal liquid, a solvent, ethanol, a plant extract, a fragrance, a flavoring agent or a vitamin mixture, etc. The fragrance may include a betel nut extract, menthol, peppermint, spearmint oil, various fruit flavor components, etc., but is not limited thereto. The flavoring agent may include components that can provide various scents or flavors to the user. The vitamin mixture may be a mixture mixed with at least one of vitamin A, vitamin B, vitamin C and vitamin E, but is not limited thereto. The aerosol generating device can be used in different fields, such as medical, electronic aerosol atomization, etc.

[0072] Please refer to Figures 1 - 3 , the aerosol generating device includes a housing assembly 1 and a heating assembly 2 disposed inside the housing assembly 1.

[0073] In some embodiments, the heating assembly 2 includes a receiving cavity 21 for receiving an aerosol-generating article and a heating element for providing energy to heat the aerosol-generating article to generate an aerosol. The aerosol-generating article is configured to be removable from the receiving cavity 21.

[0074] An assembly opening 11 is provided on the housing assembly 1. One end of the receiving cavity 21 is open and is provided corresponding to the assembly opening 11. When the assembly opening 11 is open, the aerosol-generating article in the receiving cavity 21 can be removed from the aerosol-generating device through the assembly opening 11 to replace the aerosol-generating article. Of course, the aerosol-generating article can also pass through the assembly opening 11 and enter the receiving cavity 21. The user can also, when the assembly opening 11 is open, insert a brush or other cleaning tool into the housing assembly 1 to clean the components provided inside the housing assembly 1.

[0075] The housing assembly 1 may include a housing in the form of a ring for defining a side surface of the aerosol-generating device, and may also include a bottom cover 12 connected to one end of the housing and a top cover connected to the opposite end of the housing. The assembly opening 11 may be provided on the housing or on the top cover. In the embodiment shown in Figures 1 - 3 the assembly opening 11 is provided on the bottom cover 12.

[0076] The aerosol-generating device may further include a blocking plug 8, and the blocking plug 8 is movably connected to the housing assembly 1: for example, the blocking plug 8 is detachably connected to the housing assembly 1, so that the blocking plug 8 can be removed from the housing assembly 1; or for example, the blocking plug 8 is slidably connected or rotatably connected to the housing assembly 1, so that after the blocking plug 8 is moved away from the assembly opening 11, it can still be connected to the housing assembly 1. Among them, when the blocking plug 8 is moved away from the assembly opening 11, the assembly opening 11 is open. Among them, known detachable connections include, but are not limited to, magnetic connection or snap connection.

[0077] It should be noted that, in some embodiments of the present application, the heating assembly 2 and the aerosol-generating article are independent products. When the aerosol-generating article is removed from the housing assembly 1, the heating assembly 2 can continue to remain in the housing assembly 1.

[0078] In some other embodiments, the heating component and the aerosol-generating article are integrally joined products, and when the aerosol-generating article is removed from the housing component, the heating component is also removed from the housing component. For example, the heating component includes a cup body with a receiving cavity formed therein, and the aerosol-generating article is a liquid aerosol-forming substrate. The heating element includes an atomizing core that can absorb the liquid aerosol-forming substrate and atomize at least a portion of the absorbed liquid aerosol-forming substrate to form an aerosol. Or, for example, the heating component includes a cartridge body, the heating element is fixed on or held in the cartridge body, and the aerosol-generating article includes one or more solid aerosol-forming substrates that are disposed in the cartridge body corresponding to the heating element to obtain heat from the heating element and generate an aerosol.

[0079] When the aerosol-generating article includes a fixed aerosol-forming substrate, the heating component may include a central heating element, a circumferential heating element, and / or an air heating element. As used herein, a "central heating element" refers to a heating element that is at least partially located inside the aerosol-generating article when the aerosol-generating article is engaged in the receiving cavity. As used herein, a "circumferential heating component" refers to a heating element that is disposed outside the aerosol-generating article when the aerosol-generating article is engaged in the receiving cavity. As used herein, an "air heating component" refers to a heating component that is disposed upstream of the receiving cavity in the air flow direction and is used to heat air to form hot air, and then the hot air flows into the aerosol-generating article in the receiving cavity to heat the aerosol-generating article.

[0080] In some embodiments, the heating component includes a resistive heating element, an infrared heating element, and / or an electromagnetic heating element. Thus, the aerosol-generating article can generate an aerosol under the action of the thermal energy provided by the heating component.

[0081] A resistive heating element refers to a heating element that generates Joule heat when obtaining an electric current. The resistive heating element includes a resistive material, and suitable resistive materials include but are not limited to: semiconductors, such as doped ceramics, conductive ceramics (e.g., molybdenum disilicide), carbon, graphite, metals, metal alloys, and composite materials made of ceramic materials and metal materials. Such composite materials may include doped or undoped ceramics. Examples of suitable doped ceramics include doped silicon carbide. Examples of suitable metals include titanium, zirconium, tantalum, and platinum group metals. Examples of suitable metal alloys include stainless steel, Constantan, nickel-containing alloys, cobalt-containing alloys, chromium-containing alloys, aluminum-containing alloys, titanium-containing alloys, zirconium-containing alloys, hafnium-containing alloys, niobium-containing alloys, molybdenum-containing alloys, tantalum-containing alloys, tungsten-containing alloys, tin-containing alloys, gallium-containing alloys, manganese-containing alloys, and iron-containing alloys, as well as nickel-based, iron-based, and cobalt-based superalloys, stainless steel, iron-aluminum-based alloys, and iron-manganese-aluminum-based alloys. The resistive heating element may include a coating made of a resistive material, or may include a heating wire, a heating sheet, a heating coil, or may include a heating mesh.

[0082] An infrared heating element may be an infrared coating, which can radiate infrared rays with a wavelength of 0.75 μm to 1000 μm when excited or when obtaining an electric current, preferably can radiate far-infrared rays with a wavelength of 1.5 μm to 400 μm, and more preferably can radiate far-infrared rays with a wavelength of 8 μm to 15 μm.

[0083] An electromagnetic heating element includes a susceptor, which refers to a material that can convert electromagnetic energy into heat. When located in a changing electromagnetic field, eddy currents induced in the susceptor cause heating of the susceptor. In such embodiments, the susceptor is designed to engage with an aerosol generating device including a magnetic field generator. The magnetic field generator generates a changing magnetic field to heat the susceptor located in the changing magnetic field. In use, the susceptor is located in the changing magnetic field generated by the magnetic field generator. Among them, the magnetic field generator is electrically connected to a power supply assembly, and the power supply assembly provides a current for the magnetic field generator to generate a changing magnetic field. The magnetic field generator may include one or more induction coils that generate a changing magnetic field, and the one or more induction coils may surround the susceptor. In one embodiment, the aerosol generating device can generate a changing magnetic field between 1 MHz and 30 MHz, such as between 2 MHz and 10 MHz, such as between 5 MHz and 7 MHz. In one embodiment, the aerosol generating device can generate a changing magnetic field having a magnetic field strength (H field) between 15 kA / m and 5 kA / m, such as between 25 kA / m and 3 kA / m, such as about 2.5 kA / m.

[0084] Among them, the susceptor may include metal or carbon. In one embodiment, the susceptor may include a ferromagnetic material, such as ferrite, ferromagnetic steel, or stainless steel. In one embodiment, the susceptor includes a nickel-iron alloy. In one embodiment, the susceptor includes a 400 series stainless steel, and the 400 series stainless steel includes grade 410 or grade 420 or grade 430 stainless steel.

[0085] In some embodiments, the aerosol-generating article includes a susceptor, and the heating element in the heating assembly includes a magnetic field generator. When the aerosol-generating article is accommodated in the accommodation cavity, the susceptor in the aerosol-generating article is located within the range of the fluctuating magnetic field generated by the magnetic field generator, so that the susceptor in the aerosol-generating article can generate heat under the action of the electromagnetic energy provided by the heating assembly, causing the aerosol-forming substrate to generate aerosol.

[0086] In such as Figure 2 and Figure 3 In the embodiment shown, the heating assembly 2 includes a tubular body 22, and the tubular body 22 is disposed around at least a part of the accommodation cavity 21, so that when the aerosol-generating article is accommodated in the accommodation cavity 21, the aerosol-generating article will be surrounded by the tubular body 22. The heating element may include a tubular body, so that the tubular body can generate heat and heat the aerosol-generating article. The heating element may be disposed on the tubular body 22. For example, the heating element may include, but is not limited to, a coating applied on the outer surface of the tubular body 22, so that the heat generated by the heating element, the infrared rays emitted, or the changing magnetic field generated needs to penetrate the tubular body 22 and flow towards the aerosol-generating article.

[0087] In some embodiments, reference may be made to Figure 2 and Figure 3 , the aerosol-generating device further includes a positioning member 6 and a pushing assembly 3. A positioning hole 61 is provided on the positioning member 6. The pushing assembly 3 includes a positioning portion 321, and the pushing assembly 3 is configured to be movable relative to the heating assembly 2 between a first position and a second position. During the process of the pushing assembly 3 moving from the first position to the second position, the pushing assembly 3 moves towards the assembly port 11 to push at least a part of the aerosol-generating article out of the accommodation cavity 21.

[0088] Among them, at least one of the inner wall of the positioning hole 61 and the outer surface of the positioning portion 321 includes an inclined surface. The area defined by the proximal end of the inclined surface is smaller than the area defined by the distal end thereof. During at least a part of the process of the pushing assembly 3 resetting to the first position, the positioning portion 321 moves in the positioning hole 61 along the direction from the distal end of the positioning hole 61 to the proximal end of the positioning hole 61, and abuts against the inner wall of the positioning hole 61 when the pushing assembly 3 is in the first position. It should be noted that the direction from the distal end of the positioning hole 61 to the proximal end of the positioning hole 61 refers to the moving direction, and does not limit the starting point and the ending point of the stroke.

[0089] When the inner wall of the positioning hole 61 has the above-mentioned inclined surface, the area defined by the proximal end of the positioning hole 61 is smaller than the area defined by its distal end, or the area enclosed by the inner wall of the proximal end of the positioning hole 61 is smaller than the area enclosed by the inner wall of its distal end. The positioning hole 61 can be generally a frustum-shaped hole or can be generally a prismoid-shaped hole. Among them, the positioning hole 61 can be a blind hole or a through hole penetrating the positioning member 6. The positioning hole 61 can be a component of the through hole formed in the positioning member 6. For example, the through hole includes two parts with different hole shapes, and the positioning hole 61 is one of them.

[0090] When the outer surface of the positioning portion 321 has the above-mentioned inclined surface, the area defined by the proximal end of the positioning portion 321 is smaller than the area defined by its distal end, or the area enclosed by the outer surface of the proximal end of the positioning portion 321 is smaller than the area enclosed by the outer surface of its distal end. The shape enclosed by the outer surface of the positioning portion 321 can be generally frustum-shaped or can be generally prismoid-shaped.

[0091] In Figure 2 and Figure 5 In the illustrated embodiment, both the inner wall of the positioning hole 61 and the outer surface of the positioning portion 321 include inclined surfaces, and the areas defined by the proximal ends of the inner wall of the positioning hole 61 and the outer surface of the positioning portion 321 are both smaller than the areas defined by their distal ends. Preferably, the inclined surface on the inner wall of the positioning hole 61 and the inclined surface on the outer surface of the positioning portion 321 are arranged parallel to each other or have the same inclination, so that when the pushing assembly 3 is in the first position, the inner wall of the positioning hole 61 can be in surface contact with the outer surface of the positioning portion 321 to increase the contact area between the positioning hole 61 and the positioning surface 321, which is beneficial to preventing the pushing assembly 3 from shaking in the first position and also helps to reduce the wear on the pushing assembly 3 and / or the positioning member 6.

[0092] In some embodiments, reference can be made to Figure 2 and Figure 3 , the aerosol generating device further includes a reset assembly 4, and the reset assembly 4 interferes with the pushing assembly 3 to drive the pushing assembly 3 to reset to the first position. As an example, reference can be made to Figure 2 and Figure 3, the reset component 4 includes an elastic member, the elastic member is connected to the pushing component 3, and the elastic member continuously generates elastic deformation during the movement of the pushing component relative to the heating component 2, and based on this elastic deformation, there is an elastic force interference between the reset component 4 and the pushing component 3. This elastic force interference can support the pushing component 3, which is beneficial to keeping the pushing component 3 in the first position, and is also beneficial to automatically resetting the pushing component 3 that deviates from the first position to the first position. As an example, the reset component 4 includes a first magnetic member, the pushing component 3 includes a second magnetic member, and there is a magnetic attraction or magnetic repulsion between the first magnetic member and the second magnetic member, so that there is a magnetic force interference between the reset component 4 and the pushing component 3. This magnetic force interference acts on the pushing component 3, which is beneficial to keeping the pushing component 3 in the first position, and is also beneficial to automatically resetting the pushing component 3 that deviates from the first position to the first position.

[0093] In some embodiments, the pushing component 3 includes an operating portion 34 and a first moving member 32 that interferes and cooperates with the reset component 4. The operating portion 34 is configured to be operable by a user, and based on this operation, the pushing component 3 is driven to move longitudinally from the first position to the second position, so that the pushing component 3 can move in a straight line substantially during the process of moving from the first position to the second position. In some embodiments, the direction from the distal end to the proximal end of the positioning hole 61 is substantially the same as the longitudinal direction.

[0094] The reset component 4 can be arranged inside the housing component 1 to be hidden. At least a part of the pushing component 3 can be arranged inside the housing component 1 to be hidden; the operating portion 34 can be exposed outside the housing component 1, so that the operating portion 34 can be operable by a user. For example, the operating portion 34 can be pressed by a user, and the user presses the operating portion 34 to move the pushing component 3 from the first position to the second position. Of course, some operations can also be used to expose the operating portion 34 that was originally blocked by the housing component 1.

[0095] The positioning member 6 can be arranged adjacent to the operating portion 34 to prevent the operating portion 34 from shaking.

[0096] Furthermore, the operating portion 34 and the first moving member 32 can be located on opposite sides of the positioning member 6. During at least part of the process of the pushing component 3 moving from the first position to the second position, at least a part of the operating portion 34 can enter the positioning hole 61 from the proximal end of the positioning hole 61, and even at least a part of the operating portion 34 can pass through the positioning hole 61. Among them, the positioning portion 321 can be arranged on the first moving member 32.

[0097] In some embodiments, reference can be made to Figure 2 and Figure 3, the first moving member 32 is detachably connected to the positioning member 6, and when the pushing assembly 3 is in the second position, the first moving member 3 and the positioning member 6 are spaced apart longitudinally. To reduce the interference between the positioning member 6 and the first moving member 3 and the wear between the two when the pushing assembly 3 moves between the first position and the second position. In the Figure 3 illustrated embodiment, when the pushing assembly 3 is in the second position, a part of the operating portion 34 is located in the through hole in the positioning member 6, and the operating portion 34 is spaced apart from the positioning member 6 in the through hole to reduce the interference between the positioning member 6 and the operating portion 34 and the wear between the two.

[0098] In some embodiments, reference may be made to Figure 2 and Figure 3 , the aerosol generating device further includes a bracket 5 disposed between the positioning member 6 and the heating assembly 2. The first moving member 32 is movably disposed in the bracket 5. During the movement of the pushing assembly 3 relative to the heating assembly 2, the first moving member 32 moves in the bracket 5. The bracket 5 can limit the movement trajectory of the first moving member 32, and limit the movement trajectory of the pushing assembly 3 relative to the heating assembly 2 by restricting the movement trajectory of the first moving member 32. For example, the bracket 5 can abut against the first moving member 32 laterally, thereby preventing the first moving member 32 from undergoing an unexpected lateral deflection during displacement, resulting in the positioning portion 321 provided on the first moving member 32 not being able to enter the positioning hole 61 during the resetting process of the pushing assembly 3 to the first position; the bracket 5 can abut against the first moving member 32 laterally, which helps the positioning portion 321 to always be substantially aligned with the positioning hole 61 during the displacement of the first moving member 32.

[0099] In some embodiments, please refer to Figure 2 and Figure 3, the bracket 5 includes a first stop wall 51 extending longitudinally and a second stop wall 52 extending longitudinally. The first stop wall 51 and the second stop wall 52 are spaced transversely. The pushing assembly 3 further includes a second moving member 33 linked to the first moving member 32. The first stop wall 51 is used to stop the first moving member 32 transversely, and the second stop wall 52 is used to stop the second moving member 33 transversely. And because the first moving member 32 and the second moving member 33 are linked, when the first moving member 32 is displaced, the position, shape, and / or angle of the second moving member 34 will change accordingly; or when the second moving member 33 is displaced, the position, shape, and / or angle of the first moving member 32 will change accordingly. Therefore, the first moving member 32 can be restricted transversely by the first stop wall 51, and the second moving member 33 can be restricted transversely by the second stop wall 52. The first moving member 32 and the second moving member 33 can restrict each other, so as to further ensure that the positioning portion 321 on the first moving member 32 can be aligned with the positioning hole 61 on the positioning member 6 during the movement of the first moving member 32. Preferably, the positioning portion 321 and the positioning hole 61 can be substantially coaxial.

[0100] Among them, the first stop wall 51 can stop the first moving member 32 transversely by being slidably connected to the first moving member 32. Of course, in order to reduce wear and resistance, the first stop wall 51 can be spaced from the first moving member 32 and mainly transversely abut the first moving member 32 when the first moving member 32 deflects transversely to prevent the transverse deflection of the first moving member 32 from exceeding expectations.

[0101] The second stop wall 52 can stop the second moving member 33 transversely by being slidably connected to the second moving member 33. Of course, in order to reduce wear and resistance, the second stop wall 33 can be spaced from the second moving member 33 and mainly transversely abut the second moving member 33 when the second moving member 33 deflects transversely to prevent the transverse deflection of the second moving member 33 from exceeding expectations.

[0102] In Figure 2 and Figure 3 In the illustrated embodiment, the reset assembly 4 is disposed between the first stop wall 51 and the second stop wall 52. Among them, the first stop wall 51 can be generally tubular and surround the outer periphery of the second stop wall 52. The first moving member 32 can be disposed inside the first stop wall 51. The second stop wall 52 can be generally tubular and surround at least part of the outer periphery of the second moving member 33

[0103] In some embodiments, reference can be made to Figure 2 and Figure 3, the second stop wall 52 is configured to be spaced apart from the first moving member 32 when the pushing assembly 3 is in the first position, and to abut against the first moving member 32 when the pushing assembly 3 is in the second position, so as to prevent the pushing assembly 3 from moving further longitudinally.

[0104] In some embodiments, the pushing assembly 3 includes a nozzle assembly 31 and a first moving member 32. The nozzle assembly 31 includes a nozzle 311 and an air duct 312 that fluidly connects the nozzle 311 and the accommodation chamber 21. The nozzle 311 can be held by the user's mouth, and the user aspirates the aerosol generated in the accommodation chamber 21 by sucking the nozzle 311. The nozzle assembly 31 is configured to be removable from the housing assembly 1 for cleaning or replacement. However, after the nozzle assembly 31 is removed from the housing assembly 1, the first moving member 32 can remain in the housing assembly 1. Based on this, in one example, reference can be made to Figure 6 , a guiding groove 511 extending longitudinally is formed in the first stop wall 51, and a buckle portion 322 is provided on the first moving member 32. During the movement of the pushing assembly 3 relative to the heating assembly 2, the buckle portion 322 moves in the guiding groove 511. When the pushing assembly 3 is in the first position, the buckle portion 322 abuts against one edge of the end of the guiding groove 511, so that the first moving member 32 cannot be separated from the bracket 5. To reduce wear, it is preferred that the buckle portion 322 is spaced from the bracket 5 when moving in the guiding groove 511. It should be noted that the removability of the nozzle assembly 31 from the housing assembly 1 is optional rather than essential.

[0105] Reference can be made to Figure 2 and Figure 6 , the aerosol generating device provided in some embodiments of the present application further includes a nozzle 311 and a first end cap assembly 7 connected to one end of the heating assembly 2. The first end cap assembly 7 includes a support seat 71 and a first seal 72 fixed on the support seat 71, and a through hole 721 is formed in the first seal 72; the pushing assembly 3 includes an air duct 312, so that the air duct 312 can move between a first position and a second position, wherein at least a part of the air duct 312 is movably disposed in the through hole 721, so that during the movement of the air duct 312 between the first position and the second position, the air duct 312 can move relative to the through hole 721 or move along the axial direction of the through hole 721. The air duct 312 fluidly connects the nozzle 311 and the accommodation chamber 21. The air duct 312 can be directly connected to the nozzle 311. The air duct 312 can be connected to and fluidly communicate with the nozzle 311 through other components having an air guiding function.

[0106] Among them, the air duct 312 includes a first part 3121 and a second part 3122, and the outer diameter of the second part 3122 is greater than that of the first part 3121; the air duct 312 is configured such that when the pushing assembly 3 or the air duct 312 is in the first position, the second part 3122 is located in the through hole 721 and is sealingly connected to the first seal 72, and when the pushing assembly 3 or the air duct 312 is in the second position, the first part 3121 is located in the through hole 721. Therefore, during the movement of the pushing assembly 3 or the air duct 312 between the first position and the second position, the first seal 72 can only closely cooperate with the air duct 312 during a partial movement stroke. Compared with the first seal 72 being in close cooperation with the air duct 312 throughout the whole process, it helps to reduce the wear of the first seal 72, so that during long-term use, the first seal 72 can maintain a sealing connection with the air duct 312 when the pushing assembly 3 is in the first position, preventing the aerosol in the accommodation cavity 21 from overflowing and leaking between the first end cap assembly 7 and the air duct 312.

[0107] It should be noted that this embodiment can be combined with any of the above embodiments to form a new technical solution, or can be independent of any embodiment having the positioning member 6 and the positioning portion 321.

[0108] In the embodiments such as Figure 2 and Figure 3 In the provided embodiments, the air duct 312 is composed of two sections of pipes. For the convenience of description, one section of the pipe connected to and in fluid communication with the nozzle 311 is defined as the first pipe, and the other section of the pipe is defined as the second pipe. The distal end of the first pipe and the proximal end of the second pipe can be connected in a nested manner. The end of the second pipe can be embedded in the first pipe by means of riveting, or the end of the first pipe can be embedded in the second pipe by means of riveting. The distal end of the first pipe and the proximal end of the second pipe can be connected by welding. The first pipe can be made of metal. The second pipe can be formed by plastic injection molding. The first pipe and the second pipe can be made of the same material. The first pipe and the second pipe can be made of different materials. The first part 3121 and the second part 3122 can both be components of the second pipe. The first part 3121 can be a component of the first pipe, and the second part 3122 can be a component of the second pipe.

[0109] The air duct 312 can be driven to move from the first position to the second position by the operating portion 34. The operating portion 34 can be the nozzle 311, or can be other components other than the nozzle 311, which is not specifically limited herein.

[0110] In the embodiments such as Figures 2 - 4In the illustrated embodiment, the air duct 312 may further include a third portion 3123. The second portion 3122 is located between the first portion 3121 and the third portion 3123, and the outer diameter of the third portion 3123 is smaller than that of the second portion 3122. When the pushing assembly 3 or the air duct 312 is in the first position, the third portion 3123 may be located outside the accommodation cavity 21. Specifically, the third portion 3123 may be located in the first end cap assembly 7. When the pushing assembly 3 is in the second position, at least a part of the third portion 3123 is located in the accommodation cavity 21 or passes through the accommodation cavity 21. Further, during the process of the pushing assembly 3 or the air duct 312 moving from the first position to the second position, the pushing assembly 3 squeezes the aerosol generating article through the end of the third portion 3123, thereby pushing the aerosol generating article out of the accommodation cavity 21, so that the aerosol generating article detaches from the housing assembly 1 from the assembly port 11.

[0111] Reference may be made to Figure 3 , when the pushing assembly 3 or the air duct 312 is in the second position, at least a part of the second portion 3122 may be located in the first end cap assembly 7 and is spaced apart from the first end cap assembly 7. Thus, when the second portion 3122 is mainly in the through hole 721, there is a large interference fit force between the second portion 3122 and the first end cap assembly 7, which helps to reduce the wear of the second portion 3122, so that after long-term use, a sealing connection can still be formed between the second portion 3122 and the first seal 72 when the second portion 3122 is located in the through hole 721.

[0112] Reference may be made to Figure 3 and Figure 4 , the pushing assembly 3 may further include a filter screen 313, and the filter screen 313 is connected to the third portion 3123. The filter screen 313 can be used to prevent solid aerosol forming matrix fragments in the aerosol generating article from being inhaled into the mouthpiece 311. The filter screen 313 may include a metal mesh. The filter screen 313 can be detachably connected to the third portion 3123, so that the filter screen 313 can be disassembled for replacement or cleaning. The second portion 3122 and the third portion 3123 may be integrally formed, and then the second portion 3122 is connected to the first portion 3121. Of course, the third portion 3123 is optional rather than essential. When there is no third portion 3123, the filter screen 313 can be connected to the second portion 3122.

[0113] Reference may be made to Figures 6 - 8 , in the aerosol generating device provided in some embodiments of the present application, the heating assembly 2 includes a tubular body 22 disposed at least partially around the accommodation cavity 21. The aerosol generating device further includes a first end cap assembly 7. The first end cap assembly 7 and the assembly port 11 are disposed on opposite sides of the accommodation cavity 21. The aerosol generating device further includes a mouthpiece assembly 31 fluidly connected to the accommodation cavity 21.

[0114] When the aerosol generating product is contained in the accommodating chamber 21, there is a gap between the edge region of the aerosol generating product and the first end cap assembly 7 that is in fluid communication with the nozzle assembly 31. Under normal circumstances, part of the airflow flows out of the aerosol generating product from the edge region of the aerosol generating product, and part of the airflow flows out of the aerosol generating product from the central region of the aerosol generating product. For some aerosol generating products, the airflow flowing out through the edge region of the aerosol generating product is greater than the airflow flowing out through the central region of the aerosol generating product. However, after the aerosol generating product containing a solid aerosol forming matrix is ​​contained in the accommodating chamber 21, the edge region of the solid aerosol forming matrix will abut against the first end cap assembly 7 or will be adsorbed on the first end cap assembly 7, so that the pores in the edge region of the solid aerosol forming matrix are blocked, resulting in the airflow in the solid aerosol forming matrix being difficult to flow into the nozzle assembly 31 through the edge region. Therefore, by providing a gap between the edge area of ​​the aerosol generating product and the first end cover assembly 7 that is in fluid communication with the nozzle assembly 31, the pores in the edge area of ​​the aerosol generating product can be prevented from being clogged, thereby helping to ensure a sufficient amount of aerosol flowing into the nozzle assembly 31 and improving the mouth feel of the suction.

[0115] It should be noted that this embodiment can be combined with any of the above embodiments to form a new technical solution, and can also be independent of any of the above embodiments.

[0116] In such Figures 6 - 8 In the illustrated embodiment, the first end cap assembly 7 includes an embedded portion 731 disposed inside the tubular body 22, and a notch 7311 is provided on the end of the embedded portion 731 facing the assembly opening 11, and the notch 7311 is in fluid communication with the mouthpiece assembly 31. When the aerosol generating product is accommodated in the accommodating chamber 21, the embedded portion 731 abuts against the aerosol generating product, and at least part of the above-mentioned gap is located in the notch 7311, so that the airflow in the edge area of ​​the aerosol generating product can flow into the mouthpiece assembly 31 through the notch 7311.

[0117] Furthermore, the embedded portion 731 can be arranged close to the inner wall of the tubular body 22, so that part of the edge area of ​​the aerosol generating product can be abutted by the embedded portion 731, and there is a gap between part of the edge area and the embedded portion 731, so that the airflow in the edge area of ​​the aerosol generating product can flow out of the aerosol generating product and then flow into the nozzle assembly 31.

[0118] More specifically, the first end cover assembly 7 includes a support seat 71 and a second seal 73 fixed on the support seat 71. The second seal 73 may include a sealing portion 732. The sealing portion 732 is arranged between the support seat 71 and the tubular body 22 to provide a seal between the support seat 71 and the tubular body 22 to prevent the air flow in the accommodating chamber 21 from leaking between the first end cover assembly 7 and the tubular body 22.

[0119] The insertion part 731 can be a component of the second seal 73. The insertion part 731 can be integrally formed with the sealing part 732. The outer surface of the insertion part 731 can be closely attached to the inner wall of the tubular body 22.

[0120] In Figure 2 and Figure 3 In the illustrated embodiment, the aerosol generating device further includes a second end cap assembly 9. The second end cap assembly 9 and the first end cap assembly 7 are disposed on opposite sides of the accommodation cavity 21. When the aerosol generating article is accommodated in the accommodation cavity 21, the second end cap assembly 9 supports the aerosol generating article, so that the aerosol generating article can be held in the accommodation cavity 21.

[0121] Wherein, the shielding plug 8 can be connected to the second end cap assembly 9, so that when the shielding plug 8 is moved away from the assembly port 11, the second end cap assembly 9 can be driven to move away, so that the aerosol generating article in the accommodation cavity 21 loses support, and thus the aerosol generating article can be taken out. Therefore, the pushing assembly 3 can be driven to move to the second position, so that the pushing assembly 3 pushes the aerosol generating article out of the housing assembly 1.

[0122] In an embodiment where the pushing assembly 3 includes a draw resistance assembly 31, the mouthpiece 311 in the mouthpiece assembly 31 can constitute the operation part 34 of the pushing assembly 3, and the user can drive at least a part of the air duct 312 in the mouthpiece assembly 31 to enter the accommodation cavity 21 or pass through the accommodation cavity 21 by operating the mouthpiece 311, so as to push the aerosol generating article out of the accommodation cavity 21.

[0123] It should be noted that the description and drawings of the present application give preferred embodiments of the present application, but are not limited to the embodiments described in this specification. Further, for those of ordinary skill in the art, improvements or changes can be made according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present application.

Claims

1. An aerosol generating device, characterized in that, include: A housing assembly having an assembly opening thereon; a heating assembly located in the housing assembly, the heating assembly comprising a receiving cavity for receiving an aerosol generating product and a heating element for providing energy to heat the aerosol generating product to generate an aerosol, the receiving cavity being arranged corresponding to the assembly opening, the assembly opening being used for allowing the aerosol generating product to exit the housing assembly from the receiving cavity; A positioning member having a positioning hole disposed thereon; and a pushing assembly, comprising a positioning portion, wherein the pushing assembly is configured to be movable between a first position and a second position relative to the heating assembly, and during the process of the pushing assembly moving from the first position to the second position, the pushing assembly moves toward the assembly opening to push at least a portion of the aerosol generating article out of the receiving chamber; Wherein, at least one of the inner wall of the positioning hole and the outer surface of the positioning portion includes an inclined surface, the area defined by the proximal end of the inclined surface is smaller than the area defined by the distal end thereof, and the positioning portion is configured to move in the positioning hole along a direction from the distal end of the positioning hole to the proximal end of the positioning hole during at least part of the process of resetting the pushing assembly to the first position, and to abut against the inner wall of the positioning hole when the pushing assembly is located at the first position.

2. The aerosol generating device according to claim 1, characterized in that, The aerosol generating device further comprises a reset component, wherein the reset component is in interference fit with the pushing component to drive the pushing component to reset to the first position.

3. The aerosol generating device according to claim 2, wherein, The pushing assembly includes an operating portion and a first moving member that interferes with the resetting assembly; The operating portion is configured to be operated by a user, thereby driving the pushing component to move longitudinally from the first position to the second position; The positioning portion is disposed on the first moving member, and at least a portion of the operating portion is configured to enter the positioning hole from a proximal end of the positioning hole during at least a portion of the process in which the pushing assembly moves from the first position to the second position.

4. The aerosol generating device according to claim 3, wherein The operating part includes a suction nozzle assembly.

5. The aerosol generating device according to claim 3, wherein The first moving member is detachably connected to the positioning member, and the first moving member is configured to be spaced apart from the positioning member in the longitudinal direction when the pushing assembly is located at the second position.

6. The aerosol generating device according to claim 3, wherein, The aerosol generating device further comprises a bracket disposed between the positioning member and the heating assembly; The first moving member can be movably arranged in the bracket so as to be stopped by the bracket in a lateral direction during the movement of the pushing component relative to the heating component.

7. The aerosol generating device according to claim 6, wherein, The bracket comprises a first stop wall extending in the longitudinal direction and a second stop wall extending in the longitudinal direction, and the first stop wall and the second stop wall are arranged at intervals in the transverse direction; The pushing assembly also includes a second moving member that is arranged in linkage with the first moving member. The first stopping wall is used to stop the first moving member in the lateral direction, and the second stopping wall is used to stop the second moving member in the lateral direction.

8. The aerosol generating device according to claim 7, wherein, The second stop wall is configured to be spaced apart from the first moving member when the pushing assembly is in the first position, and to abut against the first moving member when the pushing assembly is in the second position, so as to prevent the pushing assembly from continuing to move longitudinally.

9. The aerosol generating device according to claim 7, characterized in that, The reset assembly is disposed between the first stop wall and the second stop wall.

10. The aerosol generating device according to claim 1, characterized in that, The aerosol generating device further includes a mouthpiece and a first end cap assembly connected to one end of the heating assembly. The first end cap assembly includes a support seat and a first seal fixed on the support seat. A through hole is formed in the first seal. The pushing assembly includes an air duct. At least a part of the air duct is movably disposed in the through hole, and the air duct is in fluid communication with the mouthpiece and the accommodation cavity. Wherein, the air duct includes a first part and a second part, and the outer diameter of the second part is greater than that of the first part. The air duct is configured such that when the pushing assembly is in the first position, the second part is located in the through hole and is in sealing connection with the first seal, and when the pushing assembly is in the second position, the first part is located in the through hole.

11. The aerosol generating device according to claim 10, wherein, The air duct further includes a third part. The second part is located between the first part and the third part, and the outer diameter of the third part is smaller than that of the second part. When the pushing assembly is in the first position, the third part is located outside the accommodation cavity, and when the pushing assembly is in the second position, at least a part of the third part is located in the accommodation cavity or passes through the accommodation cavity.

12. The aerosol generating device according to claim 11, wherein, The pushing assembly further includes a filter screen, and the filter screen is connected to the third part.

13. The aerosol generating device according to claim 10, wherein, At least a part of the second part is configured to be located in the first end cap assembly and spaced apart from the first end cap assembly when the pushing assembly is in the second position.

14. The aerosol generating device according to claim 1, characterized in that, The heating assembly includes a tubular body surrounding at least a part of the accommodation cavity. The aerosol generating device further includes a first end cap assembly. The first end cap assembly and the assembly port are disposed on opposite sides of the accommodation cavity. The aerosol generating device further includes a mouthpiece assembly in fluid communication with the accommodation cavity. The first end cap assembly includes an embedding part disposed inside the tubular body. A notch is formed at an end of the embedding part facing the assembly port, and the notch is in fluid communication with the mouthpiece assembly.

15. The aerosol generating device according to claim 14, characterized in that, The embedding part is tightly attached to the inner wall of the tubular body.

16. An aerosol generating device, characterized in that, Comprising: A housing assembly, on which an assembly port is formed. A heating assembly, located inside the housing assembly. The heating assembly includes an accommodation cavity for accommodating an aerosol generating article and a heating element for providing energy to heat the aerosol generating article to generate an aerosol. The accommodation cavity corresponds to the assembly port, and the assembly port is for the aerosol generating article to exit the housing assembly from the accommodation cavity. A first end cap assembly, connected to one end of the heating assembly. The first end cap assembly includes a support seat and a first seal fixed on the support seat. A through hole is formed in the first seal. A mouthpiece and an air duct, at least a part of the air duct is movably arranged in the through hole, and the air duct is in fluid communication with the mouthpiece and the accommodation cavity; The air duct is configured to be movable relative to the heating assembly between a first position and a second position, and during the movement from the first position to the second position, it moves towards the assembly opening to push at least a part of the aerosol generating article out of the accommodation cavity; Wherein, the air duct includes a first part and a second part, and the outer diameter of the second part is larger than that of the first part; the air duct is configured such that when it is in the first position, the second part is located in the through hole and is sealingly connected to the first seal, and when it is in the second position, the first part is located in the through hole.

17. An aerosol generating device, characterized in that, Comprising: A mouthpiece assembly; A heating assembly, including an accommodation cavity for accommodating an aerosol generating article and a heating element for providing energy to heat the aerosol generating article to generate aerosol, and further including a tubular body disposed at least partially around the accommodation cavity; And A first end cap assembly, including an embedding part disposed inside the tubular body, a notch is formed at the end of the embedding part, and the notch is in fluid communication with the mouthpiece assembly.

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