Aerosol-generating device

Abstract

The aerosol generating device comprises a heating assembly and a sealing assembly, the heating assembly comprises a containing pipe, a heating body surrounding the containing pipe and a cover body surrounding the containing pipe and surrounding the heating body, and the containing pipe is used for containing an atomizing medium; the sealing assembly is arranged at the axial end of the containing pipe and comprises a pressure conduction piece and an elastic heat insulation pad, the containing pipe is sleeved with the elastic heat insulation pad, the pressure conduction piece surrounds the containing pipe, and the pressure conduction piece, the elastic heat insulation pad and the cover body are sequentially connected in an abutting mode. Therefore, when the pressure conduction piece is subjected to external force, the pressure conduction piece and the cover body extrude the elastic heat insulation pad to deform towards the containing pipe, the elastic heat insulation pad is tightly attached to the outer wall of the containing pipe, and good sealing of the end of the containing pipe is achieved.

Description

Technical Field

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

[0002] Aerosol generating devices generate aerosols for inhalation by heating the atomizing medium at high temperature. In order to form an airflow channel for inhaling the aerosol, the atomizing medium heating environment needs to be well sealed. However, most sealing structures are prone to failure in high temperature environments, which has become a key technical problem that needs to be solved in this field. Utility Model Content

[0003] In view of the above problems, an embodiment of the present application provides an aerosol generating device.

[0004] The aerosol generating device of the embodiment of the present application includes a heating component and a sealing component, wherein:

[0005] The heating component includes a containing tube, a heating element surrounding the containing tube, and a cover surrounding the containing tube and surrounding the heating element. The containing tube is used to contain the atomizing medium.

[0006] The sealing component is arranged at the axial end of the containing tube, and the sealing component includes a pressure transmission component and an elastic thermal insulation pad. The elastic thermal insulation pad is sleeved on the containing tube, and the pressure transmission component surrounds the containing tube. The pressure transmission component, the elastic thermal insulation pad and the cover body are abutted in sequence.

[0007] In the aerosol generating device of the embodiment of the present application, the pressure transmission component surrounds the containing tube, and the elastic thermal insulation pad is arranged on the containing tube. The pressure transmission component, the elastic thermal insulation pad and the cover body are abutted in sequence, so that when the pressure transmission component is subjected to external force, the pressure transmission component and the cover body squeeze the elastic thermal insulation pad toward the containing tube to produce elastic deformation, so that the elastic thermal insulation pad is close to the outer wall of the containing tube, thereby achieving good sealing of the end of the containing tube.

[0008] In some embodiments, the elastic thermal insulation pad, the pressure transmission member and the outer wall of the accommodating tube together form a buffer gap.

[0009] A buffer gap is formed together by the elastic thermal insulation pad, the pressure transmission component and the outer wall of the containing tube. The end of the elastic thermal insulation pad in contact with the outer wall of the containing tube is elastically deformed toward the buffer gap when subjected to the force applied by the pressure transmission component, so that the elastic thermal insulation pad can squeeze the outer wall of the containing tube in multiple directions, especially along the radial and axial directions of the containing tube, thereby reducing the assembly gap between the containing tube and the elastic thermal insulation pad, and even achieving an interference fit between the containing tube and the elastic thermal insulation pad, thereby ensuring effective sealing of the internal environment of the containing tube under high temperature environment.

[0010] In some embodiments, the distance between the pressure conduction member and the outer wall of the accommodation tube at the buffer gap gradually decreases from the elastic heat insulation pad to the end far from the elastic heat insulation pad.

[0011] In this way, by setting the distance between the pressure conduction member and the outer wall of the accommodation tube at the buffer gap to gradually decrease from near to far from the elastic heat insulation pad, the elastic heat insulation pad is guided to deform towards the narrower end in the buffer gap when receiving the acting force applied by the pressure conduction member, which is beneficial for the elastic heat insulation pad to extrude the accommodation tube in the radial and axial directions of the accommodation tube at the buffer gap, improving the sealing performance.

[0012] In some embodiments, the surface of the pressure conduction member for enclosing the buffer gap is an inclined plane relative to the accommodation tube; or, the surface of the pressure conduction member for enclosing the buffer gap is a curved surface.

[0013] In this way, the surface of the pressure conduction member for enclosing the buffer gap is a regular shape such as an inclined plane or a curved surface, which is convenient for design and product forming.

[0014] In some embodiments, the pressure conduction member is in a closed ring shape and sleeved on the axial end of the accommodation tube; or, the pressure conduction member includes a plurality of sub-pressure conduction members, and the plurality of sub-pressure conduction members are closely arranged along the circumferential direction of the accommodation tube and surround the axial end of the accommodation tube.

[0015] In this way, by sleeving the annular pressure conduction member on the axial end of the accommodation tube, or by closely arranging a plurality of sub-pressure conduction members along the circumferential direction of the accommodation tube and surrounding the axial end of the accommodation tube, the buffer gap surrounds the axial end of the accommodation tube, so that when the pressure conduction member applies an acting force to the elastic heat insulation pad, the sealing assembly can perform a circumferential seal on the accommodation tube, improving the sealing effect.

[0016] In some embodiments, the aerosol generating device further includes a housing assembly connected to the heating component and the sealing assembly, and the heating component and the sealing assembly are both arranged on the housing assembly.

[0017] In this way, by connecting the heating component and the sealing assembly through the housing assembly, the housing assembly can apply an acting force to the sealing assembly when the aerosol generating device is assembled, and then the pressure conduction member can conduct the acting force to the elastic heat insulation pad, causing the elastic heat insulation pad to deform and tightly adhere to the accommodation tube to seal the accommodation tube.

[0018] In some embodiments, the housing assembly, the heating component, and the sealing assembly jointly enclose a heat insulation space.

[0019] In this way, by jointly enclosing a heat insulation space by the housing assembly, the heating component, and the sealing assembly, the temperature outside the heat insulation space of the housing assembly is reduced, which is convenient for the user to hold. In addition, enclosing the heat insulation space is also beneficial for heat preservation of the heating component.

[0020] In some embodiments, the housing assembly includes a first housing, a second housing, and a third housing. The first housing and the second housing are respectively located at two ends of the axial direction of the accommodation tube and are fixedly connected to the pressure conduction member. The third housing connects the first housing and the second housing and surrounds the heating assembly.

[0021] In this way, by arranging the first housing and the second housing at two ends of the axial direction of the accommodation tube respectively, and the third housing connecting the first housing and the second housing and surrounding the heating assembly, the first housing, the second housing, and the third housing respectively support and protect the heating assembly at the upper and lower ends and the circumference of the heating assembly. The pressure conduction member is fixedly connected to the first housing and the second housing respectively and abuts against the elastic heat insulation pad. When the first housing and / or the second housing are combined and installed with the third housing, a mutual acting force is formed, so that the pressure conduction member conducts the mutual acting force between the first housing and / or the second housing and the third housing to the elastic heat insulation pad, causing the elastic heat insulation pad to deform.

[0022] In some embodiments, the pressure conduction member is integrally connected to the first housing and / or the second housing; or, the pressure conduction member and the first housing and / or the second housing are of a split structure and are hermetically connected.

[0023] In this way, by integrally connecting the pressure conduction member to the first housing and / or the second housing, the number of parts can be reduced, assembly is facilitated, and the sealing structure between the pressure conduction member and the first housing and / or the second housing is saved. The pressure conduction member and the first housing and / or the second housing are of a split structure and are hermetically connected, which is beneficial to the formation of different mechanical properties of the pressure conduction member, the first housing, and the second housing, thereby strengthening the structural stability.

[0024] In some embodiments, the housing assembly is provided with a fastening device, and the fastening device is used for fixedly connecting the third housing and the first housing, and for fixedly connecting the third housing and the second housing.

[0025] In this way, the first housing and the second housing are fixedly installed on the third housing through the fastening device, thereby applying a locking force to the sealing assembly in the housing.

[0026] In some embodiments, the sealing assembly further includes a heat insulation film, and the heat insulation film is attached to a part of the wall surface of the accommodation tube that abuts against the elastic heat insulation pad.

[0027] In this way, by attaching the heat insulation film to the wall surface of the accommodation tube that abuts against the elastic heat insulation pad, the accommodation tube and the elastic heat insulation pad are isolated, thereby reducing the heat transfer from the accommodation tube to the elastic heat insulation pad, increasing the tolerance of the elastic heat insulation pad to the high temperature of the accommodation tube, and further increasing the service life.

[0028] In some embodiments, the cover body and the heating body are arranged at intervals, and an infrared reflection layer is provided on the inner surface of the cover body.

[0029] In this way, by arranging the cover body and the heating element at intervals and providing an infrared reflection layer on the inner surface of the cover body, the cover body can reflect the heat generated by the heating element into the accommodating tube in the form of infrared radiation, thereby reducing the outward transfer of heat, improving the energy utilization rate, and being beneficial to heat preservation of the heating assembly.

[0030] In some embodiments, the cover body includes two fixing covers sleeved on the axial ends of the accommodating tube. The fixing covers are fixedly arranged relative to the accommodating tube, and an elastic heat insulation pad is arranged on the side opposite to the two fixing covers.

[0031] In this way, by fixedly arranging the fixing covers relative to the accommodating tube at the axial ends of the accommodating tube and arranging the elastic heat insulation pad on the side opposite to the two fixing covers, the installation position of the elastic heat insulation pad relative to the accommodating tube is relatively stable through the fixing covers.

[0032] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 is a schematic structural diagram of a heating assembly according to an embodiment of the present application;

[0035] Figure 2 is a schematic cross-sectional structural diagram of a heating assembly according to an embodiment of the present application;

[0036] Figure 3 is an exploded structural diagram of a heating assembly according to an embodiment of the present application;

[0037] Figure 4 is Figure 2 an enlarged schematic diagram of part B of the heating element;

[0038] Figure 5 is a combined schematic diagram of a first housing and a pressure conducting member according to an embodiment of the present application.

[0039] MAIN ELEMENT SYMBOL DESCRIPTION:

[0040] 1000, aerosol generating device; 100, heating component; 110, receiving tube; 120, heating element; 130, cover; 131, fixed cover; 132, support cover; 133, infrared reflection layer; 200, sealing component; 210, pressure conduction member; 220, elastic heat insulation pad; 221, aerogel pad; 230, buffer gap; 240, heat insulation film; 251, first seal; 252, second seal; 300, housing assembly; 301, heat insulation space; 310, first housing; 311, upper cover; 312, air outlet tube; 320, second housing; 321, air inlet channel; 330, third housing; 341, screw hole. Detailed implementation manners

[0041] The following describes in detail the implementation manners of the present application. Examples of the implementation manners are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The implementation manners described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0043] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0044] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include contact between the first and second features through additional features therebetween rather than direct contact. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0045] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure of this application, components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit this application. In addition, this application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0046] The aerosol generating device 1000 is a structure capable of generating an aerosol from an atomization medium by at least one of methods such as resistive heating, electromagnetic heating, microwave heating, laser irradiation, infrared light irradiation, ultrasound or mechanical oscillation. The atomization medium is a substance that has been processed and can generate an aerosol after being heated. The atomization medium is atomized by heat to form an aerosol. The aerosol may be visible or invisible and may include vapor (e.g., fine particulate matter in a gaseous state, which is usually a liquid or solid at room temperature), as well as liquid droplets of gas and condensed vapor. The aerosol may contain volatile compounds. The user can inhale the aerosol into the oral cavity, nasal cavity or lungs through the mouth or nose. The aerosol inhaled into the user's respiratory system can be used for various purposes such as eating, medicating, health care, and entertainment.

[0047] The form of the atomization medium can be all-solid or semi-solid, or can also be liquid. For example, the solid atomization medium can be a product of the flower, stem or leaf of a plant prepared by processes such as roll pressing, thick slurry, die casting, or extrusion. Another example is that the liquid atomization medium can include a liquid composition based on plant extracts and / or various flavoring agents.

[0048] Please refer to Figures 1 - 3, the aerosol generating device 1000 according to the embodiment of the present application includes a heating component 100 and a sealing component 200. Among them, the heating component 100 includes a receiving tube 110 and a heating element 120 surrounding the receiving tube 110. The receiving tube 110 is used to accommodate the atomization medium; the sealing component 200 is arranged at the end of the receiving tube 110 in the axial direction. The sealing component 200 includes a pressure conducting member 210 and an elastic heat insulating pad 220. The elastic heat insulating pad 220 is sleeved on the receiving tube 110. The pressure conducting member 210 surrounds the receiving tube 110, and the pressure conducting member 210, the elastic heat insulating pad 220 and the cover 130 are sequentially abutted.

[0049] In the aerosol generating device 1000 according to the embodiment of the present application, the pressure conducting member 210 surrounds the receiving tube 110, and the elastic heat insulating pad 220 is sleeved on the receiving tube 110. Through the sequential abutment of the pressure conducting member 210, the elastic heat insulating pad 220 and the cover 130, when an external force acts on the pressure conducting member 210, the pressure conducting member 210 and the cover 130 squeeze the elastic heat insulating pad 220 to generate elastic deformation towards the receiving tube 110, so that the elastic heat insulating pad 220 is tightly attached to the outer wall of the receiving tube 110, realizing good sealing of the end of the receiving tube 110.

[0050] Specifically, the heating component 100 can generate heat for heating by at least one of the methods such as resistance heating, electromagnetic heating, microwave heating, laser irradiation, infrared light irradiation, ultrasound or mechanical oscillation. Exemplarily, the heating component 100 is heated based on the principle of resistance heating, and the heating element 120 has electrical conductivity and can convert electrical energy into heat energy when powered on.

[0051] The receiving tube 110 can be a hollow tube body. At least one of the two ends of the receiving tube 110 in its own axial direction forms a through hole to accommodate the atomization medium to be loaded into the hollow interval of the receiving tube 110. The cross-sectional shape of the receiving tube 110 can be circular, oval, triangular, square, diamond, polygonal, star-shaped, racetrack-shaped or other irregular shapes, and the present application does not limit this.

[0052] Exemplarily, the cross-sectional shape of the receiving tube 110 is circular, the receiving tube 110 is a hollow circular tube with both ends communicating, the atomization medium is solid and formed into a columnar shape similar to a cigarette, and the user inserts the atomization medium into the receiving tube 110 for heating.

[0053] For the convenience of description, it is defined that the two ends of the receiving tube 110 in the axial direction are respectively oriented upward and downward of the aerosol generating device 1000. Among them, the end facing upward of the aerosol generating device 1000 is the upper end of the receiving tube 110, and the end facing downward of the aerosol generating device 1000 is the lower end of the receiving tube 110. The direction from the upper end of the receiving tube 110 to the lower end of the receiving tube 110 is the direction from top to bottom.

[0054] Optionally, the accommodating tube 110 is a light-transmitting heat-resistant tube, and the accommodating tube 110 is made of heat-resistant materials such as glass, quartz glass, and transparent ceramics. The temperature range that the accommodating tube 110 can withstand can be above 600 °C.

[0055] Optionally, the heating element 120 is a wire, a wire mesh, a solenoid, etc. made of a metal material. The heating element 120 is wound around the outer wall of the accommodating tube 110, and the heating element 120 has pins for connecting electricity.

[0056] The sealing assembly 200 is arranged at both ends of the accommodating tube 110 in the axial direction. The elastic heat-insulating pad 220 is a heat-insulating body with a certain flexibility. The elastic heat-insulating pad 220 can be made of heat-resistant materials with better heat resistance and softer texture such as aerogel, PI (polyimide fiber) cotton, alumina fiber, and wool felt.

[0057] Exemplarily, the elastic heat-insulating pad 220 is an aerogel pad 221. Aerogel is a nano-porous solid material formed by replacing the liquid phase in the gel with gas by a certain drying method, and has the characteristics of low thermal conductivity, low density, and high hydrophobicity. The elastic heat-insulating pad 220 made of aerogel has good heat resistance and heat preservation performance, is beneficial to lightweight and insulation protection, and can also play a role in mechanical buffering.

[0058] The elastic heat-insulating pads 220 are sleeved at both ends of the accommodating tube 110 in the axial direction. The elastic heat-insulating pads 220 can be formed with accommodating holes, and the accommodating tube 110 passes through the accommodating holes. The axial ends of the accommodating tube 110 are accommodated in the accommodating holes. The pressure conducting member 210 is located on the opposite sides of the two elastic heat-insulating pads 220, and the pressure conducting member 210 and the elastic heat-insulating pads 220 can be opposite and abutted along the axial direction of the accommodating tube 110. The pressure conducting member 210 surrounds the axial ends of the accommodating tube 110, and the inner side surface of the pressure conducting member 210 in the radial direction of the accommodating tube 110 is opposite to the outer wall of the accommodating tube 110 and is spaced apart by a certain distance along the radial direction of the accommodating tube 110. The contact surface between the pressure conducting member 210 and the elastic heat-insulating pads 220 is located at the periphery of the accommodating holes and is spaced apart by a certain distance from the outer wall of the accommodating tube 110 in the radial direction of the accommodating tube 110.

[0059] Optionally, the surface of the pressure conducting member 210 in contact with the elastic heat-insulating pads 220 is a plane parallel to the elastic heat-insulating pads 220, or can also be an arc surface or a curved surface. The end of the pressure conducting member 210 in contact with the elastic heat-insulating pads 220 can also form a fold angle and form a line contact with the elastic heat-insulating pads 220 at the fold angle.

[0060] At the upper end of the accommodating tube 110 along the axial direction, the pressure conduction member 210, the elastic heat insulation pad 220, and the cover 130 are abutted in sequence from top to bottom. At the lower end of the accommodating tube 110 along the axial direction, the cover 130, the elastic heat insulation pad 220, and the pressure conduction member 210 are abutted in sequence from top to bottom. When the aerosol generating device 1000 is assembled, the elastic heat insulation pad 220 is placed between the pressure conduction member 210 and the cover 130. The pressure conduction member 210 is located on the outermost side and is extruded towards the middle position of the accommodating tube 110 along the axial direction during assembly, causing the elastic heat insulation pads 220 at both ends to be deformed by force. Due to being restricted by the pressure conduction member 210 and the cover 130 in the axial direction of the accommodating tube 110, the elastic heat insulation pad 220 mainly extends along the radial direction of the accommodating tube 110 and extrudes the outer wall of the accommodating tube 110.

[0061] In some embodiments, a buffer gap 230 is jointly formed by the elastic heat insulation pad 220, the pressure conduction member 210, and the outer wall of the accommodating tube 110.

[0062] In this way, by the pressure conduction member 210 surrounding the accommodating tube 110 at the end of the accommodating tube 110 along the axial direction and abutting against the elastic heat insulation pad 220, a buffer gap 230 is jointly formed by the elastic heat insulation pad 220, the pressure conduction member 210, and the outer wall of the accommodating tube 110. When the end of the elastic heat insulation pad 220 in contact with the outer wall of the accommodating tube 110 is subjected to the acting force applied by the pressure conduction member 210, it elastically deforms towards the buffer gap 230, enabling the elastic heat insulation pad 220 to extrude the outer wall of the accommodating tube 110 in multiple directions, especially along the radial and axial directions of the accommodating tube 110, thereby reducing the assembly gap between the accommodating tube 110 and the elastic heat insulation pad 220, and even achieving an interference fit between the accommodating tube 110 and the elastic heat insulation pad 220, and further ensuring an effective seal of the internal environment of the accommodating tube 110 in a high-temperature environment.

[0063] Such as Figure 2In the illustrated embodiment, at the upper end of the receiving tube 110, the lower end surface of the pressure conducting member 210 abuts against the elastic heat insulating pad 220, the inner side surface of the pressure conducting member 210 faces and is spaced from the outer wall of the receiving tube 110, the elastic heat insulating pad 220 abuts against the outer wall of the receiving tube 110 below the pressure conducting member 210, and the upper side surface of the elastic heat insulating pad 220, the inner side surface of the pressure conducting member 210 and the outer wall of the receiving tube 110 jointly define a buffer gap 230, and the buffer gap 230 surrounds the upper end of the receiving tube 110; at the lower end of the receiving tube 110, the upper end surface of the pressure conducting member 210 abuts against the elastic heat insulating pad 220, the inner side surface of the pressure conducting member 210 faces and is spaced from the outer wall of the receiving tube 110, the elastic heat insulating pad 220 abuts against the outer wall of the receiving tube 110 above the pressure conducting member 210, and the lower side surface of the elastic heat insulating pad 220, the inner side surface of the pressure conducting member 210 and the outer wall of the receiving tube 110 jointly define a buffer gap 230, and the buffer gap 230 surrounds the lower end of the receiving tube 110.

[0064] The principle of the sealing assembly 200 achieving sealing at the end of the receiving tube 110 is as follows: The pressure conducting member 210 presses the elastic heat insulating pad 220 under an external force, so that a sealed connection is formed between the pressure conducting member 210 and the elastic heat insulating pad 220. At the same time, the elastic heat insulating pad 220 is deformed irregularly at the receiving hole under the pressure applied by the pressure conducting member 210, fills part of the space of the buffer gap 230, and presses the outer wall of the receiving tube 110, so that a sealed connection is formed between the elastic heat insulating pad 220 and the outer wall of the receiving tube 110. The external force received by the pressure conducting member 210 can be the acting force formed by the clamping, extrusion and abutment between parts during the assembly of the aerosol generating device 1000. Thus, the aerosol generating device 1000 can also achieve the sealing of the inside of the receiving tube 110 while completing the assembly.

[0065] Please refer to Figure 2 and Figure 4 , in some embodiments, the distance d between the pressure conducting member 210 and the outer wall of the receiving tube 110 at the buffer gap 230 gradually decreases from the elastic heat insulating pad 220 to the end far from the elastic heat insulating pad 220.

[0066] In this way, by setting the distance d between the pressure conducting member 210 and the outer wall of the receiving tube 110 in the buffer gap 230 to gradually decrease along the direction from close to far from the elastic heat insulating pad 220, the elastic heat insulating pad 220 is guided to deform towards the narrower end in the buffer gap 230 when receiving the acting force applied by the pressure conducting member 210, which is beneficial to the elastic heat insulating pad 220 pressing the receiving tube 110 radially and axially at the buffer gap 230 and improving the sealing performance.

[0067] Specifically, the distance between the surface of the pressure conduction member 210 facing the accommodation tube 110 and the outer wall of the accommodation tube 110 along the radial direction of the accommodation tube 110 is the distance d between the pressure conduction member 210 and the outer wall of the accommodation tube 110 at the buffer gap 230. In the buffer gap 230, the distance d between the pressure conduction member 210 and the outer wall of the accommodation tube 110 gradually decreases along the axial direction of the accommodation tube 110 from the elastic heat insulation pad 220 to the end far from the elastic heat insulation pad 220. The distance between the contact surface of the pressure conduction member 210 and the elastic heat insulation pad 220 and the outer wall of the accommodation tube 110 along the radial direction near the end of the accommodation tube 110 is the maximum value of the distance d between the pressure conduction member 210 and the outer wall of the accommodation tube 110 at the buffer gap 230.

[0068] The outer wall of the accommodation tube 110 can be a flat surface, and the surface of the pressure conduction member 210 surrounding the buffer gap 230 forms an acute angle with the outer wall of the accommodation tube 110, so that the distance d between the pressure conduction member 210 and the outer wall of the accommodation tube 110 at the buffer gap 230 gradually decreases along the radial direction of the accommodation tube 110 from the elastic heat insulation pad 220 to the end far from the elastic heat insulation pad 220.

[0069] It can be understood that the elastic heat insulation pad 220 has a certain elasticity, and an elastic contact is formed between the pressure conduction member 210 and the elastic heat insulation pad 220. The buffer gap 230 is wider at the elastic heat insulation pad 220 and narrower at the end far from the elastic heat insulation pad 220. When the elastic heat insulation member is subjected to the force applied by the pressure conduction member 210, it deforms and squeezes towards the peripheral space of the force application position, that is, around the contact position between the elastic heat insulation pad 220 and the pressure conduction member 210. Since the buffer gap 230 provides a accommodation space, the deformed pressure conduction member 210 extends into the buffer gap 230 and presses against the outer wall of the accommodation tube 110 at the buffer gap 230.

[0070] Optionally, the end of the pressure conduction member 210 far from the elastic heat insulation pad 220 can be in contact with the outer wall of the accommodation tube 110, that is, the distance d between the pressure conduction member 210 and the outer wall of the accommodation tube 110 at the buffer gap 230 decreases to 0 at the end of the pressure conduction member 210 far from the elastic heat insulation pad 220.

[0071] Optionally, the two end faces of the accommodation tube 110 in the axial direction extend radially outward and are in contact with the pressure conduction member 210.

[0072] Optionally, the sealing assembly 200 further includes a first seal 251 and a second seal 252 that respectively press against the two end faces of the accommodation tube 110 axially. The first seal 251 and the second seal 252 partially extend beyond the end faces of the accommodation tube 110 and abut against the pressure conduction member 210, and partially enclose a buffer gap 230. The distance d between the pressure conduction member 210 and the outer wall of the accommodation tube 110 at the buffer gap 230 is the width of the surface of the first seal 251 or the second seal 252 that is used to enclose the buffer gap 230 at one end of the pressure conduction member 210 away from the elastic heat insulation pad 220.

[0073] Optionally, the pressure conduction member 210 has a certain elasticity.

[0074] Please refer to Figure 4 , in some embodiments, the surface of the pressure conduction member 210 that is used to enclose the buffer gap 230 is an inclined plane relative to the accommodation tube 110.

[0075] In some other embodiments, the surface of the pressure conduction member 210 that is used to enclose the buffer gap 230 is a curved surface.

[0076] In this way, the surface of the pressure conduction member 210 that is used to enclose the buffer gap 230 is a regular shape such as an inclined plane or a curved surface, which is convenient for design and product molding.

[0077] In some embodiments, as Figure 4 shown, the surface of the pressure conduction member 210 that is used to enclose the buffer gap 230 is a plane and inclined relative to the accommodation tube 110. The outer wall of the accommodation tube 110 is a flat straight surface. The surface of the pressure conduction member 210 facing the accommodation tube 110 forms an angle less than 90° with the outer wall of the accommodation tube 110. In this embodiment, the cross-sectional shape of the pressure conduction member 210 can be a wedge shape, a trapezoid shape, a triangle shape or other irregular shapes containing a hypotenuse, and the hypotenuse is opposite to the outer wall of the accommodation tube 110 along the radial direction of the accommodation tube 110.

[0078] In some other embodiments, the surface of the pressure conduction member 210 that is used to enclose the buffer gap 230 is a curved surface. The cross-sectional shape of the pressure conduction member 210 can be a semi-circular shape, a semi-elliptical shape or other irregular shapes containing a curved edge and a straight edge. The curved edge is opposite to the outer wall of the accommodation tube 110, and the straight edge abuts against the elastic heat insulation pad 220, and the curved edge protrudes towards the buffer gap 230, so that the distance between the pressure conduction member 210 and the outer wall of the accommodation tube 110 gradually decreases from the elastic heat insulation pad 220 to the end away from the elastic heat insulation pad 220 at the buffer gap 230.

[0079] It should be noted that the present application does not limit the surface shape of the pressure conduction member 210 for enclosing the buffer gap 230 or the cross-sectional shape of the pressure conduction member 210. The surface of the pressure conduction member 210 for enclosing the buffer gap 230 can be any shape that satisfies the condition that the distance from the elastic heat insulation pad 220 to the side away from the elastic heat insulation pad 220 gradually decreases with respect to the accommodation tube 110. The above embodiments are only illustrative explanations.

[0080] Please refer to Figure 2 and Figure 3 , in some embodiments, the pressure conduction member 210 is in a closed ring shape and sleeved on the axial end of the accommodation tube 110.

[0081] In other embodiments, the pressure conduction member 210 includes a plurality of sub-pressure conduction members 210 (not shown in the figure). The plurality of sub-pressure conduction members 210 are closely arranged along the circumferential direction of the accommodation tube 110 and surround the axial end of the accommodation tube 110.

[0082] In this way, by sleeving the annular pressure conduction member 210 on the axial end of the accommodation tube 110, or by closely arranging a plurality of sub-pressure conduction members 210 along the circumferential direction of the accommodation tube 110 and surrounding the axial end of the accommodation tube 110, the buffer gap 230 surrounds the axial end of the accommodation tube 110. Thus, when the pressure conduction member 210 applies a force to the elastic heat insulation pad 220, the sealing assembly 200 can perform a circumferential seal on the accommodation tube 110, improving the sealing effect.

[0083] Specifically, the pressure conduction member 210 can be a closed ring structure such as a circular ring, an elliptical ring or other irregular shapes. The cross-sectional shape of the pressure conduction member 210 can be a wedge shape, a trapezoid shape, a triangle shape or other irregular shapes with a hypotenuse, where the hypotenuse is opposite to the outer wall of the accommodation tube 110. The cross-sectional shape of the pressure conduction member 210 can also be a semi-circular shape, a semi-elliptical shape or other irregular shapes with a curved side and a straight side, where the curved side is opposite to the outer wall of the accommodation tube 110 and the straight side abuts against the elastic heat insulation pad 220. Exemplarily, as Figure 3 shown, the pressure conduction member 210 is a circular ring with a diameter larger than that of the accommodation tube 110.

[0084] In other embodiments, a plurality of sub-pressure conduction members 210 are closely arranged in a circle along the circumferential direction of the accommodation tube 110 at the two axial ends of the accommodation tube 110, and the gap between adjacent two sub-pressure conduction members 210 is eliminated as much as possible. The cross-section of the sub-pressure conduction member 210 can also be a wedge shape, a trapezoid shape, a triangle shape, a semi-circular shape, a semi-elliptical shape or other irregular shapes. The side surface of the sub-pressure conduction member 210 facing the accommodation tube 110 forms an angle less than 90° with the outer wall of the accommodation tube 110.

[0085] Please refer to Figure 1 and Figure 2, in some embodiments, the aerosol generating device 1000 further includes a housing assembly 300 connected to the heating component 100 and the sealing component 200, and both the heating component 100 and the sealing component 200 are disposed on the housing assembly 300.

[0086] In this way, the heating component 100 and the sealing component 200 are supported and installed by the housing assembly 300. When the aerosol generating device 1000 is assembled, the housing assembly 300 can apply a force to the sealing component 200, and then the pressure conducting member 210 can conduct the force to the elastic heat insulating pad 220, causing the elastic heat insulating pad 220 to deform and closely adhere to the receiving tube 110 to seal the receiving tube 110.

[0087] Specifically, the housing assembly 300 can be made of a heat insulating material with relatively high strength. The housing assembly 300 can be formed by assembling several separate parts or can be a modular integral structure. The housing assembly 300 can be directly connected to the heating component 100 and the sealing component 200 by at least one of the following methods: snap connection, adhesive connection, extrusion, connection by fixing parts, screwing, riveting, etc., or can be connected to either the heating element 120 or the sealing component 200 by at least one of the above connection methods, and is fixedly connected to the sealing component 200 through the heating element 120, indirectly connecting the heating element 120 and the sealing component 200 together.

[0088] In some embodiments, the housing assembly 300, the heating component 100, and the sealing component 200 jointly enclose a heat insulating space 301.

[0089] In this way, by jointly enclosing the heat insulating space 301 by the housing assembly 300, the heating component 100, and the sealing component 200, the temperature outside the heat insulating space 301 of the housing assembly 300 can be reduced, facilitating the user to hold. In addition, enclosing the heat insulating space 301 is also beneficial to heat preservation of the heating component 100.

[0090] Specifically, the elastic heat insulating pad 220 is disposed outside the two fixing covers 131 at the axial two ends of the cover body 130, and the outer end portion of the elastic heat insulating pad 220 in the radial direction of the receiving tube 110 can be in contact with the housing assembly 300. The housing assembly 300 surrounds and encloses the heating component 100, and there can be a certain distance between the housing assembly 300 and the support cover 132. The outer wall surface of the support cover 132, the opposite side surfaces of the two elastic heat insulating pads 220, and the inner surface of the housing assembly 300 facing the heating component 100 jointly define and form the heat insulating space 301.

[0091] The heating element 120 can be located at the center of the heat insulation space 301. When the temperature of the heating element 120 rises, the cover 130 can reflect part of the infrared radiation to the receiving tube 110. The housing assembly 300 is spaced from the cover 130 by a certain distance to form the heat insulation space 301, which can insulate heat through air and increase the heat dissipation distance, effectively reducing the temperature of the housing assembly 300.

[0092] Optionally, the housing assembly 300 is made of a material with a low thermal conductivity.

[0093] Please refer to Figures 1 - 3 , in some embodiments, the housing assembly 300 includes a first housing 310, a second housing 320, and a third housing 330. The first housing 310 and the second housing 320 are respectively located at both ends of the axial direction of the receiving tube 110 and are fixedly connected to the pressure conduction member 210. The third housing 330 connects the first housing 310 and the second housing 320 and surrounds the heating assembly 100.

[0094] In this way, by respectively arranging the first housing 310 and the second housing 320 at both ends of the axial direction of the receiving tube 110, and the third housing 330 connecting the first housing 310 and the second housing 320 and surrounding the heating assembly 100, the first housing 310, the second housing 320, and the third housing 330 respectively support and protect the heating assembly 100 at the upper and lower ends and the circumference of the heating assembly 100. The pressure conduction member 210 is fixedly connected to the first housing 310 and the second housing 320 respectively and abuts against the elastic heat insulation pad 220. When the first housing 310 and / or the second housing 320 are assembled with the third housing 330, mutual forces are formed, so that the pressure conduction member 210 conducts the mutual forces between the first housing 310 and / or the second housing 320 and the third housing 330 to the elastic heat insulation pad 220, causing the elastic heat insulation pad 220 to deform.

[0095] Specifically, the first housing 310 and the third housing 330, and the second housing 320 and the third housing 330 can be fixedly connected by at least one of connection methods such as screwing, riveting, snap connection, adhesive connection, fixed part connection, and intermediate part connection.

[0096] Optionally, the first housing 310, the second housing 320, and the third housing 330 are detachably connected.

[0097] In Figure 3In the illustrated embodiment, the first housing 310 includes an upper cover 311 and an air outlet cylinder 312 connected to the upper cover 311. The upper cover 311 is covered with the second housing 320. The upper cover 311 is formed with a through hole penetrating the upper and lower surfaces. The air outlet cylinder 312 is connected to the through hole of the upper cover 311 and is directly opposite to the upper end of the accommodating tube 110. The through hole formed by the air outlet cylinder 312 and the upper cover 311 is communicated with the inside of the accommodating tube 110, allowing the atomization medium to be inserted and the aerosol to escape and flow out.

[0098] The second housing 320 can be in the form of a relatively thick plate or a flat block and is located below the accommodating tube 110. The second housing 320 is formed with an air inlet passage 321 that communicates the inside of the accommodating tube 110 with the external environment of the aerosol generating device 1000. The air inlet passage 321 can be formed by the wall surface, holes, grooves, etc. of the second housing 320, or can be formed by components such as pipes and sleeves. When the user inhales the aerosol, the suction airflow enters the air inlet passage 321 from outside the aerosol generating device 1000, and sequentially passes through the air inlet passage 321, the inside of the accommodating tube 110, and the air outlet cylinder 312, and finally carries the aerosol generated in the accommodating tube 110 into the user's respiratory system.

[0099] The third housing 330 can be in the form of a hollow cylinder, with the upper and lower ends of the third housing 330 being communicated. The upper cover 311 covers the upper end of the third housing 330, and the second housing 320 can be accommodated in the third housing 330 and cover the lower end of the third housing 330. The upper and lower ends of the third housing 330 can be respectively engaged with the outer periphery of the upper cover 311 and the second housing 320.

[0100] Referring to Figure 2 In this embodiment, the third housing 330 surrounds the support cover 132 and is spaced apart from the support cover 132 by a certain distance. The height of the third housing 330 along the axial direction is greater than that of the cover body 130. The elastic heat insulation pad 220 is located on the opposite side of the two fixing covers 131 and extends from the outer wall of the accommodating tube 110 to the inner surface of the third housing 330 along the radial direction of the accommodating tube 110. The heat insulation space 301 is defined by the inner surface of the third housing 330, the two elastic heat insulation pads 220, and the outer surface of the support cover 132.

[0101] The first housing 310, the second housing 320, and the third housing 330 can also have other shape structures and be connected in other ways.

[0102] The cross-sectional shapes of the first housing 310, the second housing 320, and the third housing 330 can be various shapes such as triangular, quadrilateral, circular, oval, polygonal, racetrack-shaped, star-shaped, olive-shaped, etc., and the present application does not limit this. Exemplarily, referring to Figure 3, the third housing 330 is a hollow cylinder with a rectangular cross-section. The upper cover 311 is a rectangular plate-like structure and matches the cross-sectional shape of the third housing 330. The air outlet cylinder 312 is a cylinder and is connected to the geometric center of the upper cover 311. The second housing 320 is a block structure with a rectangular cross-section, and the first housing 310, the second housing 320, and the third housing 330 form rounded corners at the four corners of the square to avoid being scratched.

[0103] Please refer to Figure 2 , Figure 3 and Figure 5 , in some embodiments, the pressure conduction member 210 is integrally connected to the first housing 310 and / or the second housing 320.

[0104] In other embodiments, the pressure conduction member 210 and the first housing 310 and / or the second housing 320 are separate structures and are hermetically connected.

[0105] In this way, by integrally connecting the pressure conduction member 210 to the first housing 310 and / or the second housing 320, the number of parts can be reduced, facilitating assembly, and saving the sealing structure between the pressure conduction member 210 and the first housing 310 and / or the second housing 320. When the pressure conduction member 210 and the first housing 310 and / or the second housing 320 are separate structures and are hermetically connected, it is beneficial for the pressure conduction member 210 and the first housing 310 and the second housing 320 to form different mechanical properties, thereby enhancing the structural stability.

[0106] Specifically, the pressure conduction member 210 and the first housing 310 and / or the second housing 320 can be integrally formed with the same material. For example, referring to Figure 3 , the second housing 320 and a pressure conduction member 210 are integrally formed, referring to Figure 5 , the first housing 310 and another pressure conduction member 210 are integrally formed. In the above embodiments, the first housing 310, the second housing 320, and the two pressure conduction members 210 can all be made of plastic materials such as PEK and PI. Referring to Figure 2 , at the upper end of the receiving tube 110, the pressure conduction member 210 is located below the first housing 310, and the circumferential center of the pressure conduction member 210 is located at the connection between the air outlet channel and the internal hollow section of the receiving tube 110. At the lower end of the receiving tube 110, the pressure conduction member 210 is located above the second housing 320, and the circumferential center of the pressure conduction member 210 is located at the connection between the air inlet channel 321 and the internal hollow section of the receiving tube 110.

[0107] In some other embodiments, the pressure conduction member 210 can be an annular part, or composed of a plurality of sub-pressure conduction members 210 closely arranged in a ring, sleeved on the axial end of the accommodating tube 110, and hermetically connected to the first housing 310 at the upper end of the accommodating tube 110 and hermetically connected to the second housing 320 at the lower end of the accommodating tube 110.

[0108] Please refer to Figures 1 - 3 , in some embodiments, the housing assembly 300 is provided with a fastening device (not shown in the figure), and the fastening device (not shown in the figure) is used for fixedly connecting the third housing 330 and the first housing 310, and for fixedly connecting the third housing 330 and the second housing 320.

[0109] In this way, the first housing 310 and the second housing 320 are fixedly installed on the third housing 330 through the fastening device (not shown in the figure), thereby applying a locking force to the sealing assembly 200 inside the housing.

[0110] Specifically, the fastening device (not shown in the figure) includes but is not limited to screws, rivets, bolts, etc. For example, the fastening device (not shown in the figure) is a set screw (not shown in the figure). The first housing 310 and the third housing 330 form a number of opposite and communicating screw holes 341, and the second housing 320 and the third housing 330 form a number of opposite and communicating screw holes 341. The set screw passes through the screw holes 341 and is tightened to fasten the first housing 310 and the third housing 330, and the second housing 320 and the third housing 330 together. At this time, the pressure conduction member 210 presses the elastic heat insulation pad 220, and the elastic heat insulation pad 220 deforms and squeezes the outer wall of the accommodating tube 110 to achieve the sealing of the inside of the accommodating tube 110.

[0111] In some embodiments, the sealing assembly 200 further includes a first sealing member 251 and a second sealing member 252 that respectively press the two end faces of the axial direction of the accommodating tube 110. The first sealing member 251 and the second sealing member 252 partially extend beyond the end face of the accommodating tube 110 and abut against the pressure conduction member 210, and partially enclose a buffer gap 230. The upper end face of the first sealing member 251 abuts against the first housing 310, and the lower end face of the second sealing member 252 abuts against the second housing 320. When the first housing 310 and the third housing 330, and the second housing 320 and the third housing 330 are fastened together, the first sealing member 251 and the second sealing member 252 also respectively press the two end faces of the accommodating tube 110 to further ensure the sealing performance. The first sealing member 251 and the second sealing member 252 can be sealing rubber rings.

[0112] Please refer to Figure 4 , in some embodiments, the sealing assembly 200 further includes a heat insulation film 240, and the heat insulation film 240 is attached to a part of the wall surface of the accommodating tube 110 that abuts against the elastic heat insulation pad 220.

[0113] In this way, by attaching the heat insulation film 240 to the wall surface where the accommodation tube 110 abuts against the elastic heat insulation pad 220, the accommodation tube 110 and the elastic heat insulation pad 220 are isolated, thereby reducing the heat transfer from the accommodation tube 110 to the elastic heat insulation pad 220, improving the tolerance of the elastic heat insulation pad 220 to the high temperature of the accommodation tube 110, and further extending the service life.

[0114] Specifically, the heat insulation film 240 can be a thin film made of heat-resistant materials. For example, the heat insulation film 240 can be a ceramic film, a metal film, a PI film, etc.

[0115] Please refer to Figure 2 and Figure 3 , in some embodiments, the cover 130 and the heating element 120 are spaced apart, and an infrared reflection layer 133 is provided on the inner surface of the cover 130.

[0116] In this way, by spacing the cover 130 and the heating element 120 apart and providing the infrared reflection layer 133 on the inner surface of the cover 130, the cover 130 can reflect the heat generated by the heating element 120 into the accommodation tube 110 in the form of infrared radiation, thereby reducing the heat transfer to the outside and improving the energy utilization rate, which is beneficial to the heat preservation of the heating assembly 100.

[0117] Specifically, the cover 130 covers the outside of the accommodation tube 110 and the heating element 120, and an infrared reflection layer 133 is provided on the inner surface of the cover 130 to form a reflection cavity, and the heat generated by the heating element 120 is radiated to the center of the reflection cavity, that is, the accommodation tube 110, in the form of infrared radiation. The infrared reflection layer 133 can be formed by depositing or coating a metal, an alloy or a metal matrix composite material on the inner surface of the cover 130. The inner surface of the cover 130 includes the surface of the support cover 132 facing the heating element 120 and the opposite surfaces of the two fixing covers 131.

[0118] The accommodation tube 110 can penetrate infrared radiation, and the heat directly transferred by the heating element 120, the infrared radiation directly emitted by the heating element 120, and the infrared radiation reflected by the cover 130 are concentrated inside the accommodation tube 110 to heat the atomization medium.

[0119] Please refer to Figure 2 and Figure 3 , in some embodiments, the cover 130 includes two fixing covers 131 sleeved on the axial ends of the accommodation tube 110, the fixing covers 131 are fixedly arranged relative to the accommodation tube 110, and the elastic heat insulation pad 220 is arranged on the opposite sides of the fixing covers 131.

[0120] In this way, by fixedly arranging the fixing covers 131 relative to the accommodation tube 110 at the axial ends of the accommodation tube 110 and arranging the elastic heat insulation pad 220 on the opposite sides of the two fixing covers 131, the installation position of the elastic heat insulation pad 220 relative to the accommodation tube 110 is relatively stable through the fixing covers 131.

[0121] Specifically, the cover 130 includes two fixed covers 131 sleeved on the axial ends of the accommodation tube 110 and a support cover 132 connecting the two fixed covers 131. The support cover 132 surrounds the heating element 120 and forms openings at both axial ends. The two fixed covers 131 respectively cover the two axial ends of the support cover 132. The fixed cover 131 mainly reflects the infrared rays radiated upward or downward along the axis of the accommodation tube 110, and the support cover 132 mainly reflects the infrared rays radiated radially outward from the heating element 120 along the accommodation tube 110.

[0122] The fixed cover 131 can be fixedly connected to the outer wall of the accommodation tube 110 or be fixed relative to the accommodation tube 110 by being fixedly connected to the housing assembly 300. The elastic heat insulation pad 220 can be placed on the upper surface of the fixed cover 131 at the upper end of the accommodation tube 110 and be extruded downward by the first housing 310; the elastic heat insulation pad 220 can also be attached to the lower surface of the fixed cover 131 at the lower end of the accommodation tube 110 and be extruded upward by the second housing 320, so that the overall position of the elastic heat insulation pad 220 is relatively fixed relative to the accommodation tube 110.

[0123] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "certain embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0124] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An aerosol generating device, characterized in that: The aerosol generating device comprises: A heating component, the heating component comprising a containing tube, a heating element surrounding the containing tube, and a cover surrounding the containing tube and enclosing the heating element, the containing tube being used to contain an atomizing medium; A sealing component is arranged at the axial end of the containing tube, and the sealing component includes a pressure transmission component and an elastic thermal insulation pad. The elastic thermal insulation pad is sleeved on the containing tube, and the pressure transmission component surrounds the containing tube. The pressure transmission component, the elastic thermal insulation pad and the cover body are abutted in sequence.

2. The aerosol generating device according to claim 1, characterized in that: The elastic heat-insulating pad, the pressure-conducting component and the outer wall of the accommodating tube together form a buffer gap.

3. The aerosol generating device according to claim 2, characterized in that: The distance between the pressure transmission component and the outer wall of the accommodating tube at the buffer gap gradually decreases from the elastic thermal insulation pad to an end away from the elastic thermal insulation pad.

4. The aerosol generating device according to claim 3, characterized in that: The surface of the pressure transmission member used to enclose the buffer gap is a plane inclined relative to the accommodating tube; or, the side surface of the pressure transmission member used to enclose the buffer gap is a curved surface.

5. The aerosol generating device according to claim 1, characterized in that: The pressure transmission member is in a closed ring shape and is sleeved on the axial end of the accommodating tube; or, The pressure transmission element includes a plurality of sub-pressure transmission elements, which are closely arranged along the circumference of the accommodating tube and surround the axial end of the accommodating tube.

6. The aerosol generating device according to claim 1, characterized in that: The aerosol generating device further comprises a shell component connected to the heating component and the sealing component, and the heating component and the sealing component are both arranged on the shell component.

7. The aerosol generating device according to claim 6, characterized in that: The shell component, the heat generating component and the sealing component together enclose a heat insulating space.

8. The aerosol generating device according to claim 6, characterized in that: The shell assembly includes a first shell, a second shell and a third shell. The first shell and the second shell are respectively located at the two ends of the axial direction of the accommodating tube and are fixedly connected to the pressure transmission component. The third shell connects the first shell and the second shell and surrounds the heating component.

9. The aerosol generating device according to claim 8, characterized in that: The pressure transmission element is connected to the first shell and / or the second shell as an integral structure; or, The pressure transmission component is a separate structure from the first shell and / or the second shell and is sealedly connected.

10. The aerosol generating device according to claim 8, characterized in that The housing assembly is provided with a fastening device, and the fastening device is used for fixedly connecting the third housing and the first housing, and for fixedly connecting the third housing and the second housing.

11. The aerosol generating device according to claim 1, characterized in that: The sealing assembly further comprises a heat-insulating film, which is attached to a portion of the wall surface where the accommodating tube abuts against the elastic heat-insulating pad.

12. The aerosol generating device according to claim 1, characterized in that: The cover body and the heating element are arranged at intervals, and an infrared reflection layer is arranged on the inner surface of the cover body.

13. The aerosol generating device according to claim 1, characterized in that: The cover body comprises two fixed covers sleeved on the axial ends of the accommodating tube, the fixed covers are fixedly arranged relative to the accommodating tube, and the elastic heat insulation pad is arranged on the opposite side of the two fixed covers.

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