Aerosol generating device

Abstract

An aerosol generating device, comprising: an outer conductor unit (10), a cavity (110) being formed in the outer conductor unit; a fixing unit (30) at least partially mounted in the cavity (110), an accommodating cavity (31) being defined in the fixing unit, and the fixing unit (30) being provided with at least part of a sensing air channel (60); an airflow sensing unit (40) in communication with the sensing air channel (60); and a sealing structure (50), which is at least partially provided on the fixing unit (30), located on the periphery of the sensing air channel (60), and in contact with the outer conductor unit (10) and / or the airflow sensing unit (40). In the aerosol generating device, at least part of the sealing structure (50) is arranged on the outer side wall of the fixing unit (30) and on the periphery of the sensing air channel (60), and the sealing structure (50) comes into contact with the outer conductor unit (10) and / or the airflow sensing unit (40), thereby increasing the overall sealing performance of the aerosol generating device and reducing the risk of e-liquid leakage.

Description

Aerosol generating device TECHNICAL FIELD

[0001] The present application relates to the field of atomization, in particular to an aerosol generating device. BACKGROUND

[0002] In a heat-not-burn aerosol generating device, the installation position of the airflow sensing device is generally inside the air channel of the aerosol generating device, and the working principle is to count the number of puffs by the change of the suction air pressure of the air channel. Therefore, the installation of the airflow sensing device and the direction and sealing of the air channel are very important. If the design is problematic, it will affect the working state of the entire aerosol generating device. For example, after the aerosol generating substrate is atomized, there will inevitably be condensate residue. If the air channel has poor sealing, the condensate will leak, affecting the operation of other components and reducing the user experience. SUMMARY

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

[0004] The technical solution adopted by the present application to solve the technical problem is: an aerosol generating device is constructed, comprising:

[0005] An outer conductor unit is formed with a cavity on the inner side;

[0006] A fixing unit is at least partially installed in the cavity and defines a receiving cavity on the inner side; at least part of an induction air channel is arranged on the fixing unit;

[0007] An airflow sensing unit is in communication with the induction air channel;

[0008] A sealing structure is at least partially arranged on the fixing unit and located at the outer periphery of the induction air channel, and is in contact with the outer conductor unit and / or the airflow sensing unit.

[0009] In some embodiments, the sealing structure comprises a boss protruding from the outer side wall of the fixing unit; the boss extends towards the airflow sensing unit;

[0010] The boss is provided with a first airflow passage hole, which is in communication with the receiving cavity and defines at least part of the induction air channel.

[0011] In some embodiments, the sealing structure further comprises at least one sealing member, which is at least partially in contact with the boss; and at least partially in contact with the outer conductor unit or the airflow sensing unit;

[0012] The sealing member is provided with a second airflow passage hole, which is in communication with the first airflow passage hole to form part of the induction air channel.

[0013] In some embodiments, the boss is provided with a receiving groove for receiving at least part of the sealing member.

[0014] In some embodiments, the receiving groove is provided with a positioning structure for positioning and installing the sealing member.

[0015] In some embodiments, the boss is provided with a guide structure, and the sealing member is sleeved on the guide structure.

[0016] The first airflow passage is formed on the guide structure.

[0017] In some embodiments, the sealing member is two, one of which is embedded in the boss, and the other is sleeved on the outer wall of the fixed unit and tightly contacts the outer conductor unit.

[0018] In some embodiments, the outer conductor unit comprises a first end and a second end opposite to the first end, the cavity is arranged between the first end and the second end, and the fixed unit at least partially penetrates from the first end to the second end.

[0019] The distance from the sealing structure to the first end is less than the distance from the sealing structure to the second end.

[0020] In some embodiments, the outer conductor unit is provided with a gas guide column on the side wall, and part of the induction air channel is formed inside the gas guide column.

[0021] The gas guide column comprises a first port and a second port, the first port is located in the outer conductor unit, the sealing structure contacts the end face where the first port is located, and the airflow induction unit is installed on the gas guide column and located at the second port.

[0022] In some embodiments, the aerosol generating device further comprises an inner conductor unit, which is at least partially installed in the cavity and connected with the outer conductor unit.

[0023] The inner conductor unit comprises a radiation structure, which at least partially penetrates into the receiving cavity.

[0024] The aerosol generating device has the following beneficial effects: the aerosol generating device increases the overall sealing performance of the aerosol generating device and reduces the risk of liquid leakage by arranging at least part of the sealing structure on the outer wall of the fixed unit and the outer wall of the induction air channel, and contacting the sealing structure with the outer conductor unit and / or the airflow induction unit. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0026] Fig. 1 is a schematic view of an aerosol generating device and an aerosol generating substrate assembled according to a first embodiment of the present application;

[0027] Fig. 2 is a cross-sectional view of the aerosol generating device and the aerosol generating substrate assembled according to the first embodiment of the present application;

[0028] Fig. 3 is a schematic view of the aerosol generating device according to the first embodiment of the present application;

[0029] Fig. 4 is a cross-sectional view of the aerosol generating device according to the first embodiment of the present application;

[0030] Fig. 5 is a schematic view of the aerosol generating device according to the first embodiment of the present application, which is exploded;

[0031] Fig. 6 is a schematic view of an outer conductor unit of the aerosol generating device according to the first embodiment of the present application;

[0032] Fig. 7 is a cross-sectional view of the outer conductor unit according to the first embodiment of the present application;

[0033] Fig. 8 is a schematic view of a fixing unit of the aerosol generating device according to the first embodiment of the present application;

[0034] Fig. 9 is a cross-sectional view of the fixing unit according to the first embodiment of the present application;

[0035] Fig. 10 is a schematic view of a first seal member of the aerosol generating device according to the first embodiment of the present application;

[0036] Fig. 11 is a cross-sectional view of an aerosol generating device and an aerosol generating substrate assembled according to a second embodiment of the present application;

[0037] Fig. 12 is a schematic view of a fixing unit of the aerosol generating device according to the second embodiment of the present application;

[0038] Fig. 13 is a schematic view of a second seal member of the aerosol generating device according to the second embodiment of the present application;

[0039] Fig. 14 is a cross-sectional view of an aerosol generating device and an aerosol generating substrate assembled according to a third embodiment of the present application;

[0040] Fig. 15 is a schematic view of a fixing unit of the aerosol generating device according to the third embodiment of the present application;

[0041] Fig. 16 is a schematic view of a first seal member of the aerosol generating device according to the third embodiment of the present application;

[0042] Fig. 17 is a cross-sectional view of an aerosol generating device and an aerosol generating substrate assembled according to a fourth embodiment of the present application;

[0043] Fig. 18 is a schematic view of a fixing unit of the aerosol generating device according to the fourth embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to have a clearer understanding of the technical features, objectives and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the drawings. In the following description, it should be understood that the orientation or positional relationship indicated by "upper", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, constructed and operated in a particular orientation, and is only for the convenience of describing the technical solutions, and does not indicate that the device or element indicated must have a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0045] It should also be noted that unless specifically defined and limited, the terms "mount", "connect", "connect", "fix", "set", etc. should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. When an element is referred to as "on" or "below" another element, the element can be "directly" or "indirectly" above the other element, or there can be one or more intervening elements. The terms "first", "second", etc. are only for the convenience of describing the technical solutions, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features with "first", "second", etc. can be explicitly or implicitly included one or more of the features. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] Fig. 1 and Fig. 2 show a first embodiment of the aerosol generating device of the present application, which can heat the aerosol generating substrate 200 assembled thereon by feeding microwaves and make it generate aerosol for the user to smoke. The aerosol generating substrate 200 can be separately arranged in the aerosol generating device 100, and in some embodiments, the aerosol generating substrate 200 can be generally cylindrical, can be a solid material in the form of a filament, a particle or a sheet made of leaves, flowers and / or stems of plants, and can further add aroma components in the solid material.

[0047] As shown in Fig. 1 to Fig. 5, in the present embodiment, the aerosol generating device 100 can include an outer conductor unit 10, an inner conductor unit 20, and a fixing unit 30. The outer conductor unit 10 can accommodate at least part of the inner conductor unit 20 and at least part of the fixing unit 30 therein, and the inner conductor unit 20 can be at least partially mounted in and connected with the outer conductor unit 10. The inner conductor unit 20 can partially extend into the fixing unit 30, and in turn can cooperate with the outer conductor unit 10 to heat the aerosol generating substrate 200 fixed in the fixing unit 30 by feeding microwaves to make it generate aerosol. The fixing unit 30 can be used to fix the aerosol generating substrate 200.

[0048] As shown in FIGS. 6-7, in the present embodiment, the outer conductor unit 10 is made of a metal material or other high-conductivity material. For example, the outer conductor unit 10 can be made of gold, silver, copper, aluminum, iron, gold-containing alloy, aluminum-containing alloy, copper-containing alloy, iron-containing alloy, stainless steel, etc., or the outer conductor unit includes a substrate layer made of a non-metal material and a metal coating layer coated on the inner surface of the substrate layer. In the present embodiment, the outer conductor unit 10 can be made of an aluminum alloy.

[0049] In the present embodiment, the outer conductor unit 10 is substantially cylindrical, having a first end 10a and a second end 10b, wherein the first end 10a is an open end and the second end 10b can be a closed end. The first end 10a and the second end 10b can be oppositely arranged. The inner side of the outer conductor unit 10 is hollow, and the inner side can form a cavity 110.

[0050] Specifically, the outer conductor unit 10 can include a cylinder 11, which is substantially circular in cross-section, and the first end 10a and the second end 10b are two ends of the cylinder 11. The cavity 110 is formed in the cylinder 11 and located between the first end 10a and the second end 10b. The cavity 110 can be a cylindrical cavity and can be used to accommodate the fixing unit 30 and the inner conductor unit 20. The second end 10b has an end wall 111, and the end wall 111 is provided with a through hole 1111, which can be used for mounting the inner conductor unit 20.

[0051] In the present embodiment, the outer conductor unit 10 further includes a gas guide column 12, which is arranged on the outer side wall of the outer conductor unit 10, i.e., on the outer side wall of the cylinder 11, and extends outwardly along the radial direction of the cylinder 11 and is arranged close to the first end 10a. The cross-section of the gas guide column 12 can be substantially circular. In some embodiments, the gas guide column 12 is a through structure at both ends, and the inner side forms part of the induction air channel 60. In some embodiments, the gas guide column 12 can include a first port 12a and a second port 12b. The first port 12a is located in the outer conductor unit 10 and communicates with the cavity 110, and in turn communicates with the fixing unit 30. Specifically, it can be opened on the cylinder wall of the cylinder 11. The second port 12b communicates with the first port 12a.

[0052] In the present embodiment, the outer conductor unit 10 further includes a mounting protrusion 13, which protrudes from the outer side wall of the cylinder 11 and is connected to the end wall 111. The inner side of the mounting protrusion 13 is provided with a mounting through hole 131 which communicates with the cavity 110, and the mounting through hole 131 can be used for mounting the microwave feed-in unit 70.

[0053] As shown in FIG. 4 and FIG. 5, in the present embodiment, the inner conductor unit 20 can be made of metal material or other high-conductivity material, such as gold, silver, copper, aluminum, iron, gold-containing alloy, aluminum-containing alloy, copper-containing alloy, iron-containing alloy, or stainless steel, etc. In other embodiments, the inner conductor unit 20 can include a non-metallic substrate and a metal coating coated on the non-metallic substrate, such as gold-plated stainless steel.

[0054] In the present embodiment, the inner conductor unit 20 is at least partially installed in the cavity 110 and connected with the end wall 111 of the outer conductor unit 10. In some embodiments, the inner conductor unit 20 can include a radiation structure 21 and an impedance matching structure 22. The radiation structure 21 at least partially penetrates into the fixing unit 30 for feeding microwaves to the aerosol generating substrate 200 fixed in the fixing unit 30. Specifically, in the present embodiment, the radiation structure 21 can be generally columnar or needle-shaped, which can be inserted on the impedance matching structure 22. The impedance matching structure 22 can include a first portion 221 and a second portion 222. The first portion 221 can be generally disc-shaped. The second portion 222 can be generally columnar, which is disposed on one side of the first portion 221 and can be coaxially disposed with the first portion 221. The radial dimension of the second portion 222 is smaller than that of the first portion 221. The second portion 222 can be disposed on the end wall 111 and in contact with the end wall 221 to form an ohmic contact, thereby ensuring normal feeding of microwaves. The second portion 222 can be provided with a plug-through hole 2221, which can be plugged by the microwave feeding unit 70, thereby realizing the connection between the microwave feeding unit 70 and the inner conductor unit 20. The end of the second portion 222 away from the first portion 221 is provided with a connecting portion 2222, which can be a spiral column, and which can be disposed out of the through hole 1111. In the present embodiment, the impedance matching structure 22 further includes a fixing hole 223, which can penetrate from the first portion 221 to the second portion 222. The fixing hole 223 can be located at the central axis of the first portion 221 and the second portion 222, and can be used for plug-fixing the radiation structure 21.

[0055] Referring to FIG. 2, FIG. 4, FIG. 5, FIG. 8 and FIG. 9, in the present embodiment, the fixing unit 30 is at least partially disposed in the cavity 110, and can at least partially penetrate from the first end 10a to the second end 10b and be located on the first portion 221 of the impedance matching structure 22. The fixing unit 30 can be coaxially disposed with the impedance matching structure 22. The fixing unit 30 is a hollow structure, and the inner side can define a receiving cavity 31, which can be used for accommodating at least part of the aerosol generating substrate 200. The radiation structure 21 can partially penetrate into the receiving cavity 31 and can be located at the central axis of the receiving cavity 31.

[0056] In the present embodiment, the fixing unit 30 can be made of a dielectric material with no or low loss, for example, the fixing unit 30 is made of plastic, Teflon, PEEK, quartz, alumina ceramic, various composite wave-transparent materials, etc.

[0057] In the present embodiment, the fixing unit 30 has a cylindrical structure with an assembly opening 31b at one end, which includes a fixing portion 30a and a limiting portion 30b. The fixing portion 30a has a substantially circular cross-section, and its radial dimension is smaller than that of the barrel 11 of the outer conductor unit 10. The fixing portion 30a has a hollow structure. The limiting portion 30b is arranged at one end of the fixing portion 30a and has a substantially annular shape. The outer diameter of the limiting portion 30b can be greater than or equal to the inner diameter of the barrel 11 of the outer conductor unit 10, and it can be placed at the first end 10a of the barrel 11, thereby achieving limiting installation of the fixing unit 30 and the outer conductor unit 10.

[0058] In the present embodiment, a receiving cavity 31 is formed on the fixing portion 30a and the limiting portion 30b. The receiving cavity 31 is a columnar cavity, and the fixing unit 30 is provided with a support wall 31a at the end away from the assembly opening 31b. The support wall 31a is used to support the aerosol generating substrate 200, and at least two support bosses 31c can be arranged thereon at intervals. In some embodiments, the fixing unit 30 is provided with a gas guide groove 34 on its inner wall. The gas guide groove 34 can extend along the axial direction of the fixing unit 30, and can extend from the assembly opening 31b to the support wall 31a. That is, the gas guide groove 34 can form part of the gas inlet channel. External air can enter the bottom of the aerosol generating substrate 200 through the gas guide groove 34, thereby carrying the aerosol generated by the aerosol generating substrate 200.

[0059] In the present embodiment, the fixing unit 30 further includes a positioning portion 33 arranged on the outer wall of the fixing portion 30a and protruding towards the inner wall of the outer conductor unit 10. The positioning portion 33 can be arranged close to the limiting portion 30b, and can be positioned in cooperation with the inner wall of the outer conductor unit 10 or with a positioning hole formed on the inner wall of the outer conductor unit 10. The positioning portion 33 can also play a role in enhancing the interference seal between the sealing structure 50 and the inner wall of the outer conductor unit 10.

[0060] In the present embodiment, the aerosol generating device further includes an airflow sensing unit 40 arranged on the gas guide column 12, specifically at the second port 12b of the gas guide column 12. The airflow sensing unit can be a microphone or a MEMS sensor. The airflow sensing unit can count the number of puffs by sensing the change in air pressure caused by puffing. The airflow sensing unit 40 can include a substrate 41 and a sleeve 42. The airflow sensing element can be arranged on the substrate 41. The sleeve 42 is fixed to one side of the substrate 41 and can be sleeved on the gas guide column 12.

[0061] In the embodiment, the aerosol generating device further comprises an induction air channel 60, which is at least partially arranged on the fixing unit 30. Specifically, in some embodiments, the induction air channel 60 can be partially arranged on the fixing unit 30 and partially formed in the air guide column 12. The air flow induction unit 40 can be in communication with the induction air channel 60, so as to sense the change of the suction negative pressure in the induction air channel 60, and thus calculate the number of puffs and accurately control the temperature of microwave heating according to different numbers of puffs, so as to achieve a better taste.

[0062] As shown in FIGS. 2, 4, 5 and 10, in the embodiment, the aerosol generating device further comprises a sealing structure 50, which is at least partially arranged on the fixing unit 30, located at the outer periphery of the induction air channel 60, and in close contact with the outer conductor unit 10 and / or the air flow induction unit 40. Specifically, the distance from the sealing structure 50 to the first end 10a is less than the distance from the sealing structure 50 to the second end 10b. That is, the sealing structure 50 is arranged close to the first end 10a, effectively reducing the condensation of the aerosol generated by the aerosol generating substrate 200 in the induction air channel 60 during puffing. The sealing structure 50 can be arranged on the side of the fixing portion 30a opposite to the air guide column 12, and in close contact with the inner wall of the outer conductor unit 10, specifically the end face of the first port 12a in the outer conductor unit 10. By arranging the sealing structure 50, the overall sealing performance of the aerosol generating device can be improved, especially the sealing performance at the connection between the air flow induction unit 40, thereby reducing the risk of liquid leakage.

[0063] In the embodiment, the sealing structure 50 can comprise a boss 32 and at least one sealing member 51. The boss 32 is arranged protruding on the outer side wall of the fixing unit 30, specifically on the joint between the fixing portion 30a and the limiting portion 30b. In some embodiments, the boss 32 and the fixing portion 30a are integrally formed. The boss 32 can extend towards the air flow induction unit 40, that is, towards the end face of the first port 12a of the air guide column 12. In the embodiment, the boss 32 can be in the shape of a cuboid, and can be arranged linearly symmetrically with the positioning portion 33, that is, on the same diameter. In the embodiment, the sealing member 51 can be embedded and installed in the boss 32, and the boss 32 and at least part of the inner wall of the outer conductor unit 10 are in close contact. In some embodiments, the sealing member 51 can also be in close contact with the air flow induction unit 40.

[0064] In the embodiment, the boss 32 can be provided with a first airflow passage 320, which is arranged at the central axis of the boss 32 and communicates with the accommodating cavity 31, and can define part of the induction air passage 60. Specifically, in the embodiment, the boss 32 can be provided with a guide structure 321 at the central axis, and the first airflow passage 320 can be arranged at the guide structure 321. The guide structure 321 can be used for guiding the installation of the sealing member 51. In the embodiment, the boss 32 is provided with an accommodating groove 322 formed at the outer periphery of the guide structure 321, which can be an annular groove, and is used for accommodating at least part of the sealing member 51. In the embodiment, the boss 32 is provided with a positioning structure 323 arranged at the inner wall of the accommodating groove 322, and can be positioned and installed with the sealing member 51. The positioning structure 323 can be a notch arranged at the inner wall of the accommodating groove 322.

[0065] In the embodiment, the sealing member 51 can be one, which includes a first sealing member 51a. The first sealing member 51a can be partially embedded and installed in the accommodating groove 322, and is sleeved on the outer periphery of the guide structure 321. In the embodiment, the first sealing member 51a can include a sealing sleeve 511. The shape and size of the sealing sleeve 511 can be similar to those of the accommodating groove 322, one end surface of the sealing sleeve 511 can be in close contact with the bottom surface of the accommodating groove 322, and the other end surface can be in close contact with the inner wall of the outer conductor unit 10 provided with the air guide column 12. In the embodiment, the sealing member 51 is provided with a second airflow passage 512, which can communicate with the first airflow passage 320 and the air guide column 12 to form part of the induction air passage 60. Through the guidance of the guide structure 321, it can be ensured that the first airflow passage 320 and the second airflow passage 512 are in communication, and the glue overflowed from the first airflow passage 320 or the second airflow passage 512 when the first sealing member 51a is fixed by glue in the accommodating groove 322 can be prevented, so as to prevent the first airflow passage 320 or the second airflow passage 512 from being blocked. The end surface of the first sealing member 51a arranged towards the inner wall of the outer conductor unit 10 can be a non-planar structure, such as an arc surface partially protruding outward, which is closely attached to the outer conductor unit 10 at a specific angle, and the sealing is strengthened. In some embodiments, the first sealing member 51a is provided with a positioning protrusion 513 on the side wall, which can be positioned and fixed with the positioning structure 323, so as to realize the positioning and installation of the first sealing member 51a, and make the first sealing member 51a closely attached to the inner wall of the outer conductor unit 10 to form a good seal. In some embodiments, the first sealing member 51a can be a silica gel sealing gasket, which can be in interference seal with the inner wall of the outer conductor unit 10 under the action of the boss 32 and the positioning portion 33. In addition, through the cooperation of the boss 32 and the positioning portion 33, the installation position of the fixing unit 30 can be prevented from deviating and the sealing effect can be improved due to the expansion of the first sealing member 51a at high temperature.

[0066] In the present embodiment, the sealing structure 50 is provided to greatly increase the passage cavity area between the air channel 60 and the air flow sensing unit 40, thereby improving the response speed of the MEMS sensor and preventing liquid leakage.

[0067] In the present embodiment, the aerosol generating device further comprises a microwave feeding unit 70 installed in the mounting through hole 131 and extending into the cavity 110 and plugged into the plug-in through hole 2221 of the inner conductor unit 20.

[0068] Figs. 11-13 show a second embodiment of the aerosol generating device of the present application, which differs from the first embodiment in that the accommodating groove 322 and the guide structure 321 can be omitted. The sealing member 51 can comprise a second sealing member 51b, which can be a sleeve structure, can be sleeved on the outer periphery of the fixing portion 30a of the fixing unit 30, and can be placed on the impedance matching structure 22 of the inner conductor unit 20 and tightly contact the boss 32 and the inner wall of the outer conductor unit 10. The second air flow through hole 512 is formed on the side wall of the second sealing member 51b. The second sealing member 51b can be in interference fit with the radiation structure 21 and the outer conductor unit 10, and the radiation structure 21 can pass through the second sealing member 51b. The second sealing member 51b can be in interference fit with the boss 32. In some embodiments, the second sealing member 51b can be a silicone sleeve.

[0069] Figs. 14-16 show a third embodiment of the aerosol generating device of the present application, which differs from the first embodiment in that the guide structure 321 and the positioning structure 323 can be omitted. The sealing member 51 comprises two sealing members, one of which can be embedded in the boss 32, and the other of which can be sleeved on the outer periphery of the fixing unit 30 and tightly contact the outer conductor unit 10. Specifically, the sealing member 51 can comprise a first sealing member 51a and a second sealing member 51b. The first sealing member 51a can be cylindrical and can be embedded in the boss 32. The second sealing member 51b can be a sleeve structure, can be sleeved on the outer periphery of the first sealing member 51a, can be sleeved on the outer periphery of the fixing portion 30a of the fixing unit 30, and can be placed on the impedance matching structure 22 of the inner conductor unit 20 and tightly contact the first sealing member 51a and the inner wall of the outer conductor unit 10. The first sealing member 51a and the second sealing member 51b are both provided with the second air flow through hole 512, and the second air flow through holes 512 of the two sealing members are in communication with each other.

[0070] Figs. 17 and 18 show a fourth embodiment of the aerosol generating device of the present application, which differs from the second embodiment in that the first sealing member 51a can be omitted. The limiting portion 30b can be provided with an increased height. The boss 32 of the sealing structure 50 can be provided on the limiting portion 30b. The air flow sensing unit 40 can be directly sleeved on the outer periphery of the boss 32 and tightly contact the boss 32.

[0071] It can be understood that the above embodiments only express the preferred embodiments of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation to the patent scope of the present application; it should be noted that for ordinary skilled persons in the art, the above technical features can be freely combined without departing from the concept of the present application, and several modifications and improvements can be made, which all belong to the protection scope of the present application; therefore, any equivalent transformation and modification made to the patent claim scope of the present application shall belong to the coverage of the patent claim of the present application.

Claims

1. An aerosol generating device, characterized by, The application relates to an air flow sensing device, which comprises the following parts: an outer conductor unit (10) with a cavity (110) formed on the inner side; a fixing unit (30) mounted at least partially in the cavity (110) and defining a containing cavity (31) on the inner side; the fixing unit (30) is provided with an air flow sensing channel (60) formed at least partially; an air flow sensing unit (40) in communication with the air flow sensing channel (60); a sealing structure (50) provided at least partially on the fixing unit (30) and located at the periphery of the air flow sensing channel (60) and in contact with the outer conductor unit (10) and / or the air flow sensing unit (40).

2. An aerosol generation device according to claim 1, wherein, The sealing structure (50) comprises a boss (32) provided protrudingly on the outer side wall of the fixing unit (30); the boss (32) extends towards the air flow sensing unit (40); the boss (32) is provided with a first air flow through hole (320) in communication with the containing cavity (31) and defining the air flow sensing channel (60) at least partially.

3. An aerosol generation device according to claim 2, wherein, The sealing structure (50) further comprises at least one sealing member (51) in contact with the boss (32) at least partially and in contact with the outer conductor unit (10) or the air flow sensing unit (40) at least partially; the sealing member (51) is provided with a second air flow through hole (512) in communication with the first air flow through hole (320) to form the air flow sensing channel (60) partially.

4. An aerosol generation device according to claim 3, wherein, The boss (32) is provided with a containing groove (322) containing the sealing member (51) at least partially.

5. An aerosol generation device according to claim 4, wherein, The containing groove (322) is provided with a positioning structure (323) for positioning and mounting the sealing member (51).

6. An aerosol generation device according to claim 3, wherein, The boss (32) is provided with a guide structure (321); the sealing member (51) is sleeved on the guide structure (321); the first air flow through hole (320) is formed on the guide structure (321).

7. An aerosol generation device according to claim 3, wherein, The sealing member (51) is two, one of which is embedded in the boss (32) and the other of which is sleeved on the outer periphery of the fixing unit (30) and closely connected with the outer conductor unit (10).

8. The aerosol generation device of claim 1, wherein, The outer conductor unit (10) comprises a first end (10a) and a second end (10b) arranged oppositely to the first end (10a); the cavity (110) is arranged between the first end (10a) and the second end (10b); the fixing unit (30) penetrates from the first end (10a) to the second end (10b) at least partially; the distance from the sealing structure (50) to the first end (10a) is smaller than the distance from the sealing structure (50) to the second end (10b).

9. An aerosol generation device according to claim 8, wherein, The side wall of the outer conductor unit (10) is provided with a gas guide column (12); the gas guide column (12) forms the air flow sensing channel (60) partially on the inner side; The air guide column (12) comprises a first port (12a) and a second port (12b); the first port (12a) is located in the outer conductor unit (10), and the sealing structure (50) is in contact with the end face where the first port (12a) is located; the airflow sensing unit (40) is installed on the air guide column (12) and located at the second port (12b).

10. An aerosol generation device according to claim 1, characterized in that, The aerosol generating device further comprises an inner conductor unit (20), which is at least partially installed in the cavity (110) and connected with the outer conductor unit (10). The inner conductor unit (20) comprises a radiating structure (21), which at least partially penetrates into the accommodating cavity (31).

Images