Aerosol generation device and microwave heating assembly

Abstract

This utility model relates to an aerosol generating device and a microwave heating assembly. The microwave heating assembly includes: a fixing unit with an inner cavity and a supporting wall; an inner conductor unit including an inner conductor body sleeved on the outer periphery of a portion of the fixing unit; the inner conductor body includes an end wall facing the supporting wall, and the end wall facing the fixing unit; a gap is provided between the end wall and at least a portion of the supporting wall. By providing a gap between the end wall of the inner conductor body and at least a portion of the supporting wall of the fixing unit, the microwave heating assembly ensures that the end wall of the inner conductor body does not fully contact the supporting wall of the fixing unit, thereby reducing the contact area with the inner conductor unit, reducing heat transfer to the inner conductor unit, and improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of atomization, and more particularly to an aerosol generating device and a microwave heating component. Background Technology

[0002] Currently, most aerosol generating devices on the market employ heated non-combustible technology, using a heat source to heat the aerosol generating matrix and achieving a better taste through precise temperature control. Another heating method also exists: microwave heating, which uses a microwave source to heat the medium, achieving a faster heating effect and more fully stimulating the medium's flavor.

[0003] In microwave-heated aerosol generating devices, the fixed aerosol generating matrix fixing unit is usually in contact with the inner conductor unit. After the aerosol generating matrix is ​​heated, the temperature is usually higher because the fixing unit is close to the aerosol generating matrix. Its heat is easily transferred to the outside through the inner conductor unit in contact with it, resulting in heat loss. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an improved microwave heating component, and further to provide an improved aerosol generating device.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to construct a microwave heating component, comprising:

[0006] The fixed unit has an inner cavity and a supporting wall;

[0007] The inner conductor unit includes an end wall disposed toward the support wall and the end wall disposed toward the fixing unit; a gap is provided between the end wall and at least a portion of the support wall.

[0008] In some embodiments, the support wall has at least one protrusion on the side opposite to the accommodating cavity, and the protrusion contacts the end wall.

[0009] In some embodiments, the protrusion is a single, generally annular shape;

[0010] Alternatively, there may be multiple protrusions, which are spaced apart.

[0011] In some embodiments, the support wall is provided with perforations;

[0012] The inner conductor unit further includes a radiating structure and an inner conductor body; the end wall is formed on the inner conductor body; the radiating structure extends out from the end wall and is connected to the inner conductor body, and extends through the perforation into the receiving cavity;

[0013] The microwave heating assembly further includes a sealing structure located between the radiating structure and the fixing unit, sealing at least a portion of the gap between the perforated inner wall and the radiating structure, sealing at least a portion of the gap between the fixing unit and the inner conductor body, and / or at least a portion of the gap between the inner wall of the inner conductor body and the radiating structure.

[0014] In some embodiments, the sealing structure is at least partially fitted with the hole wall of the perforation and the outer wall of the radiating structure without clearance.

[0015] In some embodiments, the sealing structure includes a colloidal filler; the colloidal filler at least partially fills the space between the radiating structure and the perforation;

[0016] Alternatively, the sealing structure includes a sealing ring that is fitted around the outer periphery of the radiating structure and at least partially contacts the wall of the perforation.

[0017] In some embodiments, a first receiving groove is provided on the side of the support wall opposite to the receiving cavity; the first receiving groove is formed at one end of the through hole and communicates with the through hole, for accommodating at least a portion of the sealing structure;

[0018] And / or, a second receiving groove is provided on the end wall for receiving at least a portion of the sealing structure.

[0019] In some embodiments, the end wall is provided with a mounting through hole, and the radial structure is mounted in the mounting through hole;

[0020] The radiating structure includes a radiating part and a connecting part; the radiating part is inserted into the accommodating cavity; the connecting part is disposed at one end of the radiating part and installed in the mounting through hole, and a portion of the sidewall of the connecting part contacts a portion of the hole wall of the mounting through hole.

[0021] In some embodiments, the radiating portion is disposed in a flat shape;

[0022] And / or, the thickness of the connecting portion is greater than the thickness of the radiating portion;

[0023] And / or, one end of the radiating part is provided with a pointed structure;

[0024] And / or, the side wall of the connecting part is provided with a notch for the lead wire to be led out.

[0025] An aerosol generating device is also constructed, including the microwave heating component described in this utility model and a microwave feed unit connected to the microwave heating component.

[0026] The aerosol generating device and microwave heating assembly of this utility model have the following beneficial effects: By setting a gap between the end wall of the inner conductor body and at least part of the support wall of the fixed unit, the end wall of the inner conductor body and the support wall of the fixed unit are not in full contact, thereby reducing the contact area with the inner conductor unit, thereby reducing the transfer of heat to the inner conductor unit and improving the user experience. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0028] Figure 1 This is a partial structural schematic diagram of the microwave heating component of the aerosol generating device in some embodiments of the present invention, which heats the aerosol generating matrix.

[0029] Figure 2 yes Figure 1 The cross-sectional view shown is of a microwave heating assembly heating aerosol to generate a matrix.

[0030] Figure 3 yes Figure 2 A cross-sectional view of the microwave heating assembly shown.

[0031] Figure 4 yes Figure 3 A schematic diagram of the fixed unit structure of the microwave heating assembly shown.

[0032] Figure 5 yes Figure 3 A schematic diagram of the fixed unit from another angle;

[0033] Figure 6 yes Figure 4 A sectional view of the fixed unit shown;

[0034] Figure 7 yes Figure 3 The diagram shows the structure of the inner conductor unit.

[0035] Figure 8 yes Figure 7 A schematic diagram of the radial structure of the inner conductor unit shown.

[0036] Figure 9 yes Figure 8 A cross-sectional view of the radial structure shown;

[0037] Figure 10 yes Figure 7 A schematic diagram of the inner conductor body structure of the inner conductor unit shown;

[0038] Figure 11 yes Figure 7 The diagram shows a cross-sectional view of the inner conductor body.

[0039] Figure 12 This is a schematic diagram of the radiation structure of the microwave heating component of the aerosol generating device in the second embodiment of this utility model;

[0040] Figure 13 yes Figure 12 A schematic diagram of the radial structure from another angle;

[0041] Figure 14 yes Figure 12 A partial structural decomposition diagram of the radial structure shown. Detailed Implementation

[0042] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "upper," "lower," "inner," and "outer" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0043] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0044] Figure 1 and Figure 2Some preferred embodiments of the aerosol generating device of this invention are shown. This aerosol generating device generates aerosols for user inhalation by feeding microwaves into and heating the aerosol generating matrix 100. The aerosol generating matrix 100 is detachably disposed within the aerosol generating device. In some embodiments, the aerosol generating matrix 100 is columnar; specifically, it can be cylindrical and can be a filamentous, granular, or sheet-like solid material made from plant leaves, flowers, and / or stems, and aroma components can be further added to this solid material.

[0045] like Figure 1 and Figure 2 As shown, in some embodiments, the aerosol generating device may include a housing (not shown), a microwave heating assembly, a microwave feed unit 70, and a microwave generating unit (not shown). The microwave heating assembly is housed within the housing (not shown) and is used to generate a microwave energy field within it after microwaves are introduced, thereby heating the aerosol generating matrix. The microwave feed unit 70 may be mounted on the microwave heating assembly and connected to the microwave heating unit (not shown), and can feed the microwaves generated by the microwave generating unit (not shown) into the microwave heating assembly.

[0046] like Figure 3 As shown, the microwave heating assembly may include an outer conductor unit 10, a fixing unit 20, and an inner conductor unit 30. The fixing unit 20 may be disposed in the outer conductor unit 10 for fixing the aerosol generating matrix 100. The inner conductor unit 30 is at least partially disposed in the outer conductor unit 10 and can be connected to microwaves to the outer conductor unit 10, so that a microwave forming energy field can be generated in the outer conductor unit 10.

[0047] In some embodiments, the outer conductor unit 10 is made of metal or other highly conductive material to confine microwave capabilities therein. In some embodiments, the outer conductor unit 10 is a cylindrical structure, which can be a regular shape, such as a cuboid or a cylinder. In some embodiments, the outer conductor unit 10 can be an irregular shape. Specifically, in this embodiment, the outer conductor unit 10 is an irregular shape formed by partial outward convexity or inward concavity.

[0048] In some embodiments, the outer conductor unit 10 may include a main body 10a and an extending protrusion 10b. The main body 10a may be cylindrical, specifically, it may be generally cylindrical. One end of the main body 10a is provided with a bottom wall 11, and the other end is provided with a mounting port 12. A cavity 13 is formed on the inner side, wherein the cavity 13 is formed between the bottom wall 11 and the mounting port 12. The bottom wall 11 can be used to support the inner conductor unit 30 and contact the inner conductor unit 30 to form an ohmic contact. In some embodiments, the bottom wall 11 is provided with a through hole 111, which can be used for the inner conductor unit 30 to pass through. The through hole 111 may be located at the central axis of the cavity 13. The mounting port 12 may be coaxially arranged with the through hole 111, and it can be used to install the inner conductor unit 30 and the fixing unit 20 into the outer conductor unit 10. The cavity 13 can be used for microwave feeding. The extending protrusion 10b may be provided on one side of the main body 10a and close to the bottom wall 11. In some embodiments, the extension protrusion 10b may be integrally formed with the main body 10a. The extension protrusion 10b can be used for mounting the microwave feed unit 70. A mounting hole 14 may be provided on the extension protrusion 10b. The mounting hole 14 communicates with the cavity 13 for mounting the microwave feed unit 70. In other embodiments, the extension protrusion 10b is not limited to being integrally formed with the main body 10a; it may also be detachably assembled with the main body 10a. In some embodiments, the extension protrusion 10b may be omitted.

[0049] In some embodiments, the fixing unit 20 may be at least partially installed in the cavity 13 and may be coaxially arranged with the cavity 13. In some embodiments, the fixing unit 20 is generally cylindrical. Generally, the fixing unit 20 may be made of a low microwave loss material, such as PTFE, PEEK, ceramic, etc.

[0050] like Figures 4 to 6 As shown, in some embodiments, the fixing unit 20 may include a receiving portion 21, a limiting flange 22, and an air guide column 23. The receiving portion 21 may be generally cylindrical, with its outer diameter smaller than the inner diameter of the outer conductor unit 10. The receiving portion 21 may be coaxially arranged with the outer conductor unit 10. The limiting flange 22 may be disposed on the side wall of the receiving portion 21, and may extend circumferentially along the receiving portion 21. The limiting flange 22 may be positioned at the assembly opening 12, and may be used to limit the installation of the fixing unit 20 and the outer conductor unit 10, and facilitate the fixing of the fixing unit 20. The air guide column 23 is disposed on one side of the receiving portion 21. Specifically, in some embodiments, the air guide column 23 may extend from the limiting flange 22. A sensing airway 231 can be formed inside the air guide column 23. The end of the sensing airway 231 away from the accommodating part 21 can be connected to the airflow detection unit. The airflow of the sensing airway 231 can be sensed by the airflow detection unit, thereby realizing the counting of suction ports and facilitating temperature control.

[0051] In some embodiments, the fixing unit 20 includes a support wall 211, specifically, the support wall 211 is formed at one end of the receiving portion 21. An insertion / removal port 212 is provided at the end of the receiving portion 21 opposite to the support wall 211, the insertion / removal port 212 being used to allow the aerosol generating matrix 100 to be inserted into the receiving portion 21. An receiving cavity 213 is defined inside the receiving portion 21, the receiving cavity 213 being used to receive at least a portion of the aerosol generating matrix 100.

[0052] In some embodiments, the fixing unit 20 has a through hole 2111 communicating with the receiving cavity 213, and the through hole 2111 may be disposed on the support wall 211. In this embodiment, the through hole 2111 may be coaxially disposed with the receiving cavity 213, and it can be used for a portion of the inner conductor unit 30 to pass through. In some embodiments, the through hole 2111 may be an irregular shape, such as a non-circular shape, generally a shape formed by combining two regular shapes, such as a combination of an ellipse and a circle. In some other embodiments, the non-circular shape may also be a regular shape in which some edges are deformed. In some embodiments, the through hole 2111 may also be a regular shape, such as a circle or an ellipse.

[0053] In some embodiments, at least one protrusion 2112 may be provided on the side of the support wall 211 opposite to the accommodating cavity 213. In some embodiments, the at least one protrusion may be provided on at least one side of the perforation 2111. In some embodiments, there may be one protrusion 2112, which may be annular and extend circumferentially along the perforation 2111. The protrusion 2112 may contact the end wall 3211 of the inner conductor unit 30, preventing the entire support wall 211 of the fixing unit 20 from contacting the end wall 3211 of the inner conductor unit 30, thereby reducing the contact between the fixing unit 20 and the inner conductor unit 30, thereby reducing the transfer of heat to the inner conductor unit 30, reducing the heat loss of the aerosol generating matrix 100, and reducing the outward diffusion of heat. In some embodiments, the protrusion 2112 may be integrally formed with the support wall 211. In some embodiments, there may be more than one protrusion 2112, which may be multiple protrusions 2112 spaced apart circumferentially along the perforation 2111.

[0054] In some embodiments, a first receiving groove 2113 may be provided on the side of the support wall 211 opposite to the receiving cavity 213, and the first receiving groove 2113 may be formed in the protrusion 2112. The first receiving groove 2113 may be a circular groove, which may be used to receive at least part of the sealing structure 50.

[0055] In some embodiments, a plurality of support protrusions 2114 may be provided on the inner side of the support wall 211. The plurality of support protrusions 2114 may be arranged at circumferential intervals along the perforation 2111, and the interval between two adjacent support protrusions 2114 may form at least a partial airflow channel. The support protrusions 2114 may serve to support the aerosol generating matrix 100.

[0056] In some embodiments, the fixing unit 20 is provided with an air guide groove 214. Specifically, the air guide groove 214 is arranged along the axial direction of the receiving portion 21 and extends from the insertion port 212 to the support wall 211. It can be used to allow external gas to enter the fixing unit 20, and an airflow channel can be formed between the air guide groove 214 and the aerosol generating matrix 100. Generally, the inner sidewall of the fixing unit 20 is provided with a plurality of protrusions 215, which are spaced apart. The gap between two adjacent protrusions 215 can form an air guide groove 214. Each protrusion 215 can extend from the insertion port 212 to the support wall 211 and can be generally L-shaped.

[0057] like Figure 7 As shown, in some embodiments, the inner conductor unit 30 may include a radiating structure 31 and an inner conductor body 32. The radiating structure 31 may be clamped and fixed to the inner conductor body 32, and may partially pass through the through-hole 2111 into the receiving cavity 213. When the aerosol generating matrix 100 is assembled with the fixing unit 20, the radiating structure 31 may be partially inserted into the aerosol generating matrix 100 and coaxially arranged with the aerosol generating matrix 100. The radiating structure 31 can generate aerosol by radiating microwaves to heat the aerosol generating matrix 100. The inner conductor body 32 may be sleeved on the outer periphery of the fixing unit 20 and may partially pass through the outer conductor unit 10. The inner conductor body 32 may contact the outer conductor unit 10 to form an ohmic contact.

[0058] like Figure 8 and Figure 9 As shown, in some embodiments, the radiating structure 31 may be columnar, specifically, it may be approximately needle-shaped, and the radiating structure 31 may be selected as a flat-tipped needle structure. Generally, the width of the flat-tipped needle is sufficient to ensure temperature measurement when in contact with the aerosol generating matrix 100, while the thinness and needle tip facilitate piercing the plug of the aerosol generating matrix 100; at the same time, the flat-tipped needle structure can avoid the problem of needle sticking after the aerosol generating matrix 100 shrinks, that is, the aerosol generating matrix 100 shrinks after heating and adheres to the outside of the radiating structure 31. In other embodiments, the radiating structure 31 is not limited to a flat-tipped needle structure; in some embodiments, the radiating structure 31 may also be a round needle structure.

[0059] In some embodiments, the radiating structure 31 may include a radiating portion 311 and a connecting portion 312. The radiating portion 311 may be inserted into the receiving cavity 213 and can be entirely inserted into the aerosol generating matrix 100. The connecting portion 312 may be disposed at one end of the radiating portion 311 and can be inserted and clamped to the inner conductor body 32. In some embodiments, the radiating portion 311 is flat, and a pointed structure 3111 may be provided at the end away from the connecting portion 312. By providing the pointed structure 3111, it is beneficial for the radiating portion 311 to pass through the plug of the aerosol generating matrix 100 and be inserted into the aerosol generating matrix 100. In some embodiments, the cross-section of the radiating portion 311 may be approximately elliptical, rectangular, or the like. The thickness of the connecting portion 312 may be greater than the thickness of the radiating portion 311. The cross-section of the connecting portion 312 may be approximately circular or square. Generally, the connecting part 312 and the radiating part 311 can be an integrally formed structure. The radiating structure 31 can be a round needle-shaped preform. The round needle-shaped preform is flattened in the middle to form a flat radiating part 311 and a cylindrical connecting part 312.

[0060] In some embodiments, the inner side of the radiating structure 31 may be hollow, with one end open away from the pointed structure 3111. A wiring channel 313 may be formed inside the radiating structure 31, through which a temperature sensing lead (such as an NTC lead) can be led out. In some embodiments, a notch 3121 may be provided on the side wall of the connecting portion 312, located at the end of the connecting portion 312 away from the pointed structure 3111, which can be used for leading out the temperature sensing lead, which is bent at the notch 3121. When installing the radiating structure 31, the temperature sensing lead can first be led out along the wiring channel 313 from the notch 3121 and bent through the notch 3121, and then the radiating portion 311 can be flattened to form a flat shape, thereby avoiding damage to the temperature sensing lead.

[0061] In some embodiments, the radiating structure 31 may be made of a conductive and low thermal conductivity material, such as 304 / 316 stainless steel. By selecting a conductive and low thermal conductivity material, heat conduction to the inner conductor body 32 can be reduced, thereby reducing heat conduction to the outside.

[0062] In some embodiments, the thickness of the radiating portion 311 of the radiating structure 31 is less than 50% to 130% of the inner diameter of the aerosol generating matrix 100. Specifically, the thickness of the radiating portion 311 of the radiating structure 31 is less than 80% of the inner diameter of the aerosol generating matrix 100. Further, in some embodiments, the thickness of the radiating portion 311 may be less than 50% of the inner diameter of the aerosol generating matrix 100. The width of the radiating portion 311 is less than 50% to 130% of the inner diameter of the aerosol generating matrix 100; the height of the pointed structure 3111 of the radiating portion 311 may be 1-12 mm.

[0063] By selecting a flat radiating section 311, a greater temperature field difference can be achieved, which helps to improve the taste of the generated aerosol, helps to solve the problem of needle sticking, and is also beneficial for piercing the plug.

[0064] like Figures 10 to 11 As shown, in some embodiments, the inner conductor body 32 may include a cylindrical body 321 and a columnar body 322. The cylindrical body 321 may be sleeved on the outer periphery of a portion of the fixing unit 20, specifically, the cylindrical body 321 may be sleeved on the outer periphery of a portion of the receiving portion 21. The cylindrical body 321 may be clearance-fitted with the receiving portion 21. The columnar body 322 is disposed at one end of the cylindrical body 321 and may protrude from the outer conductor unit 10, specifically, the columnar body 322 may partially protrude from the through hole 111 of the outer conductor unit 10, and may contact the outer conductor unit 10 to form an ohmic contact. In some embodiments, the cylindrical body 321 and the columnar body 322 are integrally formed. In other embodiments, the cylindrical body 321 may be omitted, and the end wall 3211 may be the end wall of the columnar body 322 facing the fixing unit 20.

[0065] In some embodiments, the cylindrical body 321 includes an end wall 3211 and an annular wall 3212 disposed on the end wall 3211 and extending circumferentially along the end wall 3211. The end wall 3211 is disposed toward the fixing unit 20 and has a gap between it and at least a portion of the support wall 211. By providing this gap, the contact area between the support wall 211 and the end wall 3211 can be reduced, thereby reducing heat conduction. Specifically, the end wall 3211 may only contact the protrusion 2112, thereby leaving a gap between the end wall 3211 and the support wall 211 on the inner and outer sides of the protrusion 2112. In some embodiments, one end of the cylindrical body 321 is provided with an opening 3213, which may be disposed opposite to the end wall 3211 to facilitate the assembly of the cylindrical body 321 with the fixing unit 20. In some embodiments, a second receiving groove 3214 is provided on the end wall 3211. The second receiving groove 3214 can be disposed opposite to the first receiving groove 2113. The second receiving groove 3214 can accommodate at least part of the sealing structure 50. That is, a receiving space for accommodating the sealing structure 50 can be formed between the first receiving groove 2113 and the second receiving groove 3214.

[0066] In some embodiments, the columnar body 322 may include a first columnar portion 322a and a second columnar portion 322b. One end of the first columnar portion 322a may be connected to the cylindrical body 321. The second columnar portion 322b may be connected to the end of the first columnar portion 322a away from the cylindrical body 321. In some embodiments, both the first columnar portion 322a and the second columnar portion 322b are cylindrical, and the outer diameter of the first columnar portion 322a may be larger than the outer diameter of the second columnar portion 322b. A step may be formed between the second columnar portion 322b and the first columnar portion 322a. This step may be placed on the bottom wall 11 of the outer conductor unit 10, forming a good ohmic contact with the bottom wall of the outer conductor unit 10. The second columnar portion 322b may protrude from the through hole 111, and the outer wall of the second columnar portion 322b is provided with an external thread structure. The second columnar portion 322b may be screwed to the screw connection structure 60, thereby achieving connection and fixation with the outer conductor unit 10. In some embodiments, the screw connection structure 60 can be a nut, which can be sleeved on the second columnar portion 322b and screwed into the external thread structure of the second columnar portion 322b.

[0067] In some embodiments, the inner conductor body 32 has a mounting through hole 3221, which can be formed in the end wall 3211 and extends through the entire columnar body 322. The mounting through hole 3221 is located at the central axis of the inner conductor body 32 and communicates with the cylindrical body 32. A radiating structure 31 can be installed in the mounting through hole 3221. A portion of the sidewall of the radiating structure 31 can contact at least a portion of the hole wall of the mounting through hole 3221. In some embodiments, preferably, the contact between a portion of the sidewall of the radiating structure 31 and a portion of the hole wall of the mounting through hole 3221 allows the radiating structure 31 to form an ohmic contact with the inner conductor body 32, and facilitates the clamping and fixing of the radiating structure 31 onto the inner conductor body 32. A gap is left between a portion of the sidewall of the radiating structure 31 and a portion of the hole wall of the mounting through hole 3221, that is, the radiating structure 31 and the inner conductor body 32 are not in complete contact, thereby reducing heat conduction. Specifically, part of the sidewall of the connecting part 312 can contact part of the hole wall of the mounting through hole 3221, and the connecting part 312 can be clamped and fixed, so that the radiation structure 31 is fixedly mounted on the inner conductor body 32.

[0068] In some embodiments, a clamping structure 3222 may be provided in the mounting through hole 3221, which can be used to clamp and fix the radiating structure 31. In some embodiments, the clamping structure 3222 may be formed by at least two protrusions, which may be disposed in the mounting through hole 3221 and spaced apart circumferentially along the mounting through hole 3221, and may protrude toward the radiating structure 31 to contact the radiating structure 31. In some embodiments, there may be three protrusions, which are spaced apart and extend toward the radiating structure 31 respectively to contact the radiating structure 31. The three protrusions cooperate to clamp the connecting portion 312 of the radiating structure 31, thereby keeping the radiating structure 31 and the inner conductor body 32 fixed. By selecting the protrusions, the coaxiality of the radiating structure 31 and the inner conductor body 32 can be ensured, and the manufacturing process can be facilitated. In some other embodiments, the protrusions may not be limited to three, and may be two or more (e.g., four or five). Each protrusion may be strip-shaped and may extend axially along the first columnar portion 322a. In some other embodiments, the protrusions are not limited to being strip-shaped; they can also be dot-shaped. The spacing between adjacent protrusions can be used to reduce the contact area between the radiating structure 31 and the inner conductor body 32.

[0069] In some embodiments, the protrusion and the inner conductor body 32 are integrally formed. Generally, the protrusion can be formed by a portion of the hole wall of the mounting through hole 3221 protruding towards the connection portion 312 of the radial structure 31.

[0070] In some other embodiments, the clamping structure 3222 may not be integrally formed with the inner conductor body 32. The clamping structure 3222 may be a separate structure from the inner conductor body 32. The clamping structure 3222 can be fixed in the mounting through hole 3221 by a connecting structure, such as a snap-fit ​​structure or an adhesive structure. In some embodiments, the clamping structure 3222 may also be fixed in the mounting through hole 3221 by welding.

[0071] In other embodiments, the protrusion is not limited to clamping and fixing the radial structure 31; it can also be connected and fixed to the radial structure 31 via a connecting structure, which can be an adhesive structure or a snap-fit ​​structure. For example, a corresponding locking position can be provided on the radial structure 31, and the protrusion can be locked onto the locking position of the radial structure 31.

[0072] In some embodiments, the protrusion thickness of the protrusion facing the radiating structure 31 can be 2-5 mm. Further, the protrusion thickness can be selected as 2-3 mm. By selecting a protrusion of this size, it is easier to securely fix the radiating structure 31.

[0073] In some embodiments, the microwave heating assembly further includes a shielding cover 40 that can cover the mounting opening 12 of the outer conductor unit 10, thereby reducing microwave leakage. In some embodiments, the shielding cover 40 can be partially inserted into the outer conductor unit 10 from the mounting opening 12 and can be interference-fitted with the outer conductor unit 10, and the limiting flange 22 of the fixing unit 20 can be pressed onto the shielding cover 40.

[0074] In some embodiments, the microwave heating assembly further includes a sealing structure 50, which is at least partially disposed at the perforation 2111 and located between the radiating structure 31 and the fixing unit 20. The sealing structure 50 is used to seal at least a portion of the gap between the fixing unit 20 and the radiating structure 31, at least a portion of the gap between the fixing unit 20 and the inner conductor body 32, and / or at least a portion of the gap between the inner conductor body 32 and the radiating structure 31, thereby isolating aerosols or condensate and reducing leakage of condensate from the perforation 21111.

[0075] In some embodiments, the sealing structure 50 can be at least partially fitted without clearance to the wall of the perforation 2111 and the outer wall of the radiating structure 31. It can be partially accommodated in the first receiving groove 2113 and the second receiving groove 3214, and partially embedded in the perforation 2111, located between the radiating structure 31 and the wall of the perforation 2111. By providing the sealing structure 50, a good seal can be achieved, improving the airtightness of the microwave heating assembly and ensuring the reliability of the microwave heating assembly's operation.

[0076] In some embodiments, the sealing structure 50 can be a colloidal filler that can at least partially fill the space between the radiating structure 31 and the perforation 2111. The colloidal filler is chosen to facilitate the sealing of the irregularly shaped radiating structure 31. Specifically, the colloidal filler can be inserted into the first receiving groove 2113 and the second receiving groove 3214 to achieve a seal.

[0077] In some other embodiments, the sealing structure 50 may not be limited to a colloidal filler. The sealing structure 50 may also be a sealing ring, which may be fitted around a portion of the outer periphery of the radiating structure 31. Specifically, it may be fitted around a portion of the outer periphery of the connecting portion 312 of the radiating structure 31 and have an interference fit with the through hole 2111 and the connecting portion 312. It may also extend into the first receiving groove 2113 and have a gapless fit with the groove wall of the first receiving groove 2113.

[0078] In some embodiments, the aerosol generating device may further include an airflow detection unit, which may be connected to the air guide column 23 and located on the side of the air guide column 23 away from the receiving portion 21. The airflow detection unit can be used to sense the flow of air in the sensing airway 231 in the air guide column 23 to count the number of suctions. In some embodiments, the airflow detection unit may be a microphone or a MEMS. During suction, a negative pressure is generated inside the sensing airway 231, which triggers the microphone or MEMS to count the number of suctions. By placing the sensing airway 231 on the upper part of the outer conductor unit 10 and the shielding cover 40, the condensation of aerosol in the sensing airway 231 can be reduced, avoiding failure caused by condensate blockage of the sensing airway 231. Placing the sensing airway 231 outside the cavity 13, away from the heated aerosol generating matrix 100, can prevent the sensing airway 231 from overheating and damaging the airflow detection unit, and can avoid drilling holes in the outer conductor unit 10, which is beneficial to the sealing of the cavity 13.

[0079] Figures 12 to 14 A second embodiment of the aerosol generating device of this utility model is shown. The difference from the first embodiment is that the microwave heating component further includes a temperature measuring component 314, which includes a temperature measuring structure 3141. Specifically, the temperature measuring structure 3141 can be disposed on the radiating part 311. The temperature measuring structure 3141 can be used to detect the temperature in the fixed unit 20, thereby enabling temperature control. By disposing of the temperature measuring structure 3141 on the radiating part 311, the temperature of the aerosol generating matrix 100 is easily conducted to the temperature measuring structure 3141, shortening the temperature transfer path and reducing the temperature difference between the temperature of the temperature measuring structure 3141 and the temperature of the aerosol generating matrix 100, resulting in faster and more accurate temperature measurement.

[0080] In this embodiment, there may be two temperature measuring components 314, which may be disposed on two opposing surfaces of the radiating portion 311. In other embodiments, there may be one or more temperature measuring components 314.

[0081] Specifically, the temperature sensing structure 3141 can be disposed on the surface of the radiating portion 311 and can extend along the axial direction of the radiating portion 311. In this embodiment, the temperature sensing structure 3141 can be a temperature sensing film made of PTC material, which can be a Pt, Pt-Ru, Ag-pd, or other system. The temperature sensing film can be formed on the surface of the radiating portion 311 by conventional methods such as screen printing. Of course, it is understood that in some other embodiments, the temperature sensing structure 3141 is not limited to a temperature sensing film, and can also be a conventional temperature sensor. In some embodiments, a fixing structure for fixing the temperature sensor can be provided on the surface of the radiating portion 311, such as a fixing slot on the surface of the radiating portion 311.

[0082] In this embodiment, the temperature measuring component 314 further includes an isolation layer 3140, which can be disposed between the temperature measuring structure 3141 and the radiating part 311. This isolation layer isolates the temperature measuring structure 3141 from the radiating part 311, thereby preventing short circuits in the temperature measuring structure 3141. In some embodiments, the isolation layer 3140 can be an insulating layer, which can be formed on the surface of the radiating structure 31 by coating or printing. The temperature measuring structure 3141 can be formed on the side of the isolation layer 3140 opposite to the radiating part 311 by screen printing. In some embodiments, the isolation layer 3140 can be selected as a glass glaze, an inorganic coating, etc.

[0083] In this embodiment, the temperature measuring component 314 further includes a conductive structure 3142, which can be electrically connected to the temperature measuring structure 3141. The conductive structure 3142 can be a conductive film, which can be disposed on the side opposite to the isolation layer 3140 and the radiating part 311, and can extend along the axial direction of the radiating part 311 to connect with the control circuit.

[0084] In this embodiment, the temperature sensing component 314 further includes a protective layer 3143, which is disposed on the surface of the temperature sensing structure 3141 facing the aerosol generating matrix 100. This protective layer prevents the temperature sensing structure 3141 from being contaminated by aerogel, thus preventing its failure. The protective layer 3143 can also cover the surface of the conductive structure 3142 to prevent the conductive structure 3142 from contacting the inner conductor body 32 and causing a short circuit. In some embodiments, the protective layer 3143 can be made of an insulating material, such as glass glaze or an inorganic coating.

[0085] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A microwave heating assembly, characterized by, include: The fixing unit (20) has an inner cavity (213) and a support wall (211); the inner conductor unit (30) includes an end wall (3211) disposed toward the support wall (211), the end wall (3211) being disposed toward the fixing unit (20); a gap is provided between the end wall (3211) and at least a portion of the support wall (211).

2. The microwave heating assembly of claim 1, wherein, The support wall (211) is provided with at least one protrusion (2112) on the side opposite to the accommodating cavity (213), and the protrusion (2112) contacts the end wall (3211).

3. The microwave heating assembly of claim 2, wherein, The protrusion (2112) is a single one and is roughly annular; Alternatively, there may be multiple protrusions (2112), which are spaced apart.

4. The microwave heating assembly of claim 1, wherein, The support wall (211) is provided with a through hole (2111); The inner conductor unit (30) further includes a radiating structure (31) and an inner conductor body (32); the end wall (3211) is formed on the inner conductor body (32); the radiating structure (31) partially protrudes from the end wall (3211) and connects to the inner conductor body (32), and extends from the perforation (2111) into the receiving cavity (213); The microwave heating assembly further includes a sealing structure (50) located between the radiating structure (31) and the fixing unit (20), sealing at least a portion of the gap between the inner wall of the perforation (2111) and the radiating structure (31), sealing at least a portion of the gap between the fixing unit (20) and the inner conductor body (32), and / or at least a portion of the gap between the inner conductor body (32) and the radiating structure (31).

5. The microwave heating assembly according to claim 4, characterized in that, The sealing structure (50) is at least partially fitted with the hole wall of the perforation (2111) and the outer wall of the radiation structure (31) without clearance.

6. The microwave heating assembly of claim 4, wherein, The sealing structure (50) includes a colloidal filler; the colloidal filler is at least partially filled between the radiating structure (31) and the perforation (2111); Alternatively, the sealing structure (50) may include a sealing ring fitted around the outer periphery of the radiating structure (31) and at least partially in contact with the wall of the perforation (2111).

7. The microwave heating assembly of claim 4, wherein, The supporting wall (211) is provided with a first receiving groove (2113) on the side opposite to the receiving cavity (213); the first receiving groove (2113) is formed at one end of the through hole (2111) and communicates with the through hole (2111) for accommodating at least part of the sealing structure (50). And / or, a second receiving groove (3214) is provided on the end wall (3211) for receiving at least a portion of the sealing structure (50).

8. The microwave heating assembly of claim 4, wherein, The end wall (3211) is provided with a mounting through hole (3221), and the radial structure (31) is installed in the mounting through hole (3221); The radiation structure (31) includes a radiation part (311) and a connecting part (312); the radiation part (311) is inserted into the accommodating cavity (213); the connecting part (312) is disposed at one end of the radiation part (311) and installed in the mounting through hole (3221), and a portion of the sidewall of the connecting part (312) contacts a portion of the hole wall of the mounting through hole (3221).

9. The microwave heating assembly of claim 8, wherein, The radiating part (311) is arranged in a flat shape; And / or, the thickness of the connecting portion (312) is greater than the thickness of the radiating portion (311); And / or, a pointed structure (3111) is provided at one end of the radiating part (311); And / or, the side wall of the connecting part (312) is provided with a notch (3121) for the lead wire to be led out.

10. An aerosol generating device, characterized by, It includes the microwave heating assembly as described in any one of claims 1 to 9, and a microwave feed unit (70) connected to the microwave heating assembly.

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