Aerosol generating device and microwave heating assembly
By setting a protrusion in the mounting hole of the inner conductor unit of the microwave heating assembly to contact the radiation structure, and leaving a gap between the hole walls, the problem of heat transfer to the inner conductor unit is solved, thus improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SMOORE INTERNATIONAL HOLDINGS LIMITED
- Filing Date
- 2025-03-05
- Publication Date
- 2026-04-10
AI Technical Summary
When the microwave heating component heats the aerosol to form a matrix, the heat is rapidly conducted to the radiation structure of the inner conductor unit, causing the overall temperature to rise and affecting the user experience.
A microwave heating assembly is designed by setting a protrusion in the mounting through hole of the inner conductor unit to contact the radiating structure, and leaving a gap between the radiating structure and the hole wall of the mounting through hole to reduce the transfer of heat to the inner conductor body.
This effectively reduces the problem of excessively high temperatures in microwave heating components and improves the user experience.
Smart Images
Figure CN224098784U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to atomization field especially, and it is aerosol generating device and microwave heating subassembly. BACKGROUND
[0002] The aerosol generating device related in the market currently, usually adopt heating not burning technology, its utilize heating source to the aerosol generating substrate heating, through accurate control heating temperature to realize better taste.
[0003] The aerosol generating device of adopting microwave heating when heating aerosol generating substrate, aerosol generating substrate is heated by microwave, temperature rises rapidly, also will conduct rapidly to the radiation structure of inner conductor unit, and radiation structure and inner conductor body electric connection, heat also will be passed down to the outer conductor unit, cause microwave heating subassembly overall temperature rise, thereby influence use experience. UTILITY MODEL CONTENTS
[0004] The utility model solves the technical problem in at, provide an improved microwave heating subassembly, further provide an improved aerosol generating device.
[0005] The utility model solves the technical problem that it adopts the technical scheme of constructing a kind of microwave heating subassembly, including inner conductor unit;The inner conductor unit includes:
[0006] Inner conductor body, with installation through-hole;
[0007] Radiation structure, is installed in the installation through-hole;Part of the side wall of the radiation structure and part of the hole wall of the installation through-hole contact, and interval is left between part of the side wall of the radiation structure and part of the hole wall of the installation through-hole.
[0008] In some embodiments, at least two convex parts are provided in the installation through-hole;At least two convex parts are spaced apart along the circumference of the installation through-hole, and protrude towards the radiation structure to contact the radiation structure.
[0009] In some embodiments, at least two convex parts form a clamping structure for clamping and fixing the radiation structure.
[0010] In some embodiments, the convex part is integrally formed with the inner conductor body.
[0011] In some embodiments, the convex part protrudes towards the radiation structure by a protruding thickness of 2-5mm.
[0012] In some embodiments, the microwave heating subassembly has a receiving cavity for accommodating at least part of the aerosol generating substrate.
[0013] The radiation structure comprises a radiation part and a connecting part; the radiation part is arranged in the accommodating cavity; the connecting part is arranged at one end of the radiation part and is mounted in the mounting through hole; part of the side wall of the connecting part is in contact with part of the hole wall of the mounting through hole.
[0014] In some embodiments, the radiation part is arranged flatly.
[0015] In some embodiments, the thickness of the connecting part is greater than the thickness of the radiation part.
[0016] One end of the radiation part is provided with a pointed top structure.
[0017] In some embodiments, a temperature measuring structure is arranged on the radiation part.
[0018] In some embodiments, the inner conductor body comprises a cylinder and a columnar body; one end of the cylinder is provided with an opening; the columnar body is arranged at the end of the cylinder away from the opening; the mounting through hole is arranged in the columnar body and communicates with the cylinder.
[0019] The utility model also constructs an aerosol generating device, including the microwave heating subassembly of the utility model, and with microwave feeding unit connected with the microwave heating subassembly.
[0020] The aerosol generating device and the microwave heating subassembly have the following beneficial effects: the microwave heating subassembly is installed in the mounting through hole, part of the side wall of the radiation structure is in contact with part of the hole wall of the mounting through hole, and a space is arranged between part of the side wall of the radiation structure and part of the hole wall of the mounting through hole; the radiation structure is fixed, the contact area between the radiation structure and the inner conductor body is reduced, the heat transfer to the inner conductor body is reduced, the temperature of the microwave heating subassembly is prevented from being too high, and the user experience is improved. BRIEF DESCRIPTION OF DRAWINGS
[0021] The utility model will be further described below in combination with the drawings and examples, and the drawings are as follows:
[0022] Figure 1 It is the local structure schematic view of the microwave heating subassembly of the aerosol generating device in the first embodiment of the utility model;
[0023] Figure 2 It is Figure 1 The sectional view of the microwave heating subassembly of the aerosol generating substrate shown in the figure;
[0024] Figure 3 It is Figure 2 The sectional view of the microwave heating subassembly shown in the figure;
[0025] Figure 4 is Figure 3 is a fixed unit structure diagram of the microwave heating assembly shown in
[0026] Figure 5 is Figure 3 is another angle structure diagram of the fixed unit shown in
[0027] Figure 6 is Figure 4 is a sectional view of the fixed unit shown in
[0028] Figure 7 is Figure 3 is a structure diagram of the inner conductor unit shown in
[0029] Figure 8 is Figure 7 is a radiation structure diagram of the inner conductor unit shown in
[0030] Figure 9 is Figure 8 is a sectional view of the radiation structure shown in
[0031] Figure 10 is Figure 7 is a structure diagram of the inner conductor body of the inner conductor unit shown in
[0032] Figure 11 is Figure 7 is a sectional view of the inner conductor body shown in
[0033] Figure 12 is a radiation structure diagram of the microwave heating assembly of the aerosol generating device in the second embodiment of the present application;
[0034] Figure 13 is Figure 12 is another angle diagram of the radiation structure shown in
[0035] Figure 14 is Figure 12 is a partial structure exploded diagram of the radiation structure shown in DETAILED DESCRIPTION
[0036] In order to have a clearer understanding of the technical features, purposes 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 directions or positional relationships indicated by "up", "down", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, and do not indicate that the devices or elements referred to must have a specific direction, so it should not be understood as a limitation of the present application.
[0037] It should be further noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "arranging" and the like should be understood in a broad sense, 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 one or more intervening elements can be present. 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 the 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.
[0038] Figure 1 and Figure 2 Some preferred embodiments of the aerosol generating device of the present application are shown. The aerosol generating device can heat the aerosol generating substrate 100 by feeding microwaves to generate aerosol for a user to smoke. The aerosol generating substrate 100 can be detachably arranged in the aerosol generating device. In some embodiments, the aerosol generating substrate 100 is in the shape of a column, specifically, the aerosol generating substrate 100 can be in the shape of a cylinder, can be a solid material in the shape 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.
[0039] As shown in Figure 1 and Figure 2 In some embodiments, the aerosol generating device can include a housing (not shown), a microwave heating assembly, a microwave feeding unit 70 and a microwave generating unit (not shown). The microwave heating assembly is housed in the housing (not shown) and is used to generate a microwave energy field inside by accessing microwaves, thereby heating the aerosol generating substrate. The microwave feeding unit 70 can be mounted on the microwave heating assembly and connected to the microwave generating unit (not shown), and can feed the microwaves generated by the microwave generating unit (not shown) into the microwave heating assembly.
[0040] As shown in Figure 3 The microwave heating assembly can include an outer conductor unit 10, a fixing unit 20 and an inner conductor unit 30. The fixing unit 20 can be arranged in the outer conductor unit 10 and used to fix the aerosol generating substrate 100. The inner conductor unit 30 is at least partially arranged in the outer conductor unit 10 and can access microwaves into the outer conductor unit 10, so that a microwave energy field can be generated in the outer conductor unit 10.
[0041] In some embodiments, the outer conductor unit 10 is made of metal or other high conductivity material for confining the microwave energy therein. In some embodiments, the outer conductor unit 10 is a cylindrical structure, which can be regular shaped, such as cuboid, cylinder, etc. In some embodiments, the outer conductor unit 10 can be irregular shaped, in particular, in the present embodiment, the outer conductor unit 10 is irregular shaped with a portion of it protruding outwards or inwards.
[0042] In some embodiments, the outer conductor unit 10 can include a main body portion 10a and an extension protrusion 10b. The main body portion 10a can be cylindrical, in particular, it can be substantially cylindrical. The main body portion 10a is provided with a bottom wall 11 at one end and a fitting opening 12 at the other end, and a cavity 13 is formed inside between the bottom wall 11 and the fitting opening 12. The bottom wall 11 can be used to support 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 can be located at the central axis of the cavity 13. The fitting opening 12 can be coaxially arranged with the through hole 111, which can be used for the inner conductor unit 30 and the fixing unit 20 to be installed into the outer conductor unit 10. The cavity 13 can be used for microwave feeding. The extension protrusion 10b can be arranged at one side of the main body portion 10a and close to the bottom wall 11. In some embodiments, the extension protrusion 10b can be integrally formed with the main body portion 10a. The extension protrusion 10b can be used for the microwave feeding unit 70 to be installed. The extension protrusion 10b can be provided with a mounting hole 14. The mounting hole 14 is in communication with the cavity 13 and is used for the microwave feeding unit 70 to be installed. In other embodiments, the extension protrusion 10b can not be limited to being integrally formed with the main body portion 10a, but can also be detachably assembled with the main body portion 10a. In some embodiments, the extension protrusion 10b can also be omitted.
[0043] In some embodiments, the fixing unit 20 can be at least partially installed in the cavity 13 and can be coaxially arranged with the cavity 13. In some embodiments, the fixing unit 20 is substantially cylindrical. In general, the fixing unit 20 can be made of low microwave loss material, such as PTFE, PEEK, ceramic, etc.
[0044] As Figures 4 to 6As shown, in some embodiments, the fixing unit 20 can include a receiving portion 21, a limiting flange 22, and a gas guiding column 23. The receiving portion 21 can be substantially cylindrical, and the outer diameter of the receiving portion 21 can be smaller than the inner diameter of the outer conductor unit 10. The receiving portion 21 can be coaxially arranged with the outer conductor unit 10. The limiting flange 22 can be arranged on the side wall of the receiving portion 21, and can extend along the circumference of the receiving portion 21. The limiting flange 22 can be arranged at the assembly opening 12, and can be used to limit the installation of the fixing unit 20 and the outer conductor unit 10, and facilitate the fixation of the fixing unit 20. The gas guiding column 23 is arranged on one side of the receiving portion 21. Specifically, in some embodiments, the gas guiding column 23 can extend from the limiting flange 22. An induction air channel 231 can be formed inside the gas guiding column 23. One end of the induction air channel 231 away from the receiving portion 21 can be connected with the airflow detection unit. The airflow detection unit can detect the airflow in the induction air channel 231, thereby achieving the counting of the number of puffs, and facilitating the temperature regulation.
[0045] In some embodiments, the fixing unit 20 includes a support wall 211, and specifically, the support wall 211 is formed at one end of the receiving portion 21. The end of the receiving portion 21 opposite to the support wall 211 is provided with a plug-in opening 212, which can be used for inserting the aerosol generating substrate 100 into the receiving portion 21. The inside of the receiving portion 21 is bounded by a receiving cavity 213, which can be used for accommodating at least part of the aerosol generating substrate 100.
[0046] In some embodiments, the fixing unit 20 has a through hole 2111 communicating with the receiving cavity 213, and the through hole 2111 can be arranged on the support wall 211. In this embodiment, the through hole 2111 can be coaxially arranged with the receiving cavity 213, and can be used for passing part of the inner conductor unit 30. In some embodiments, the through hole 2111 can be irregularly shaped, such as a special shape. Generally, the special shape can be a shape formed by combining two regular shapes, such as a shape formed by combining an ellipse and a circle. In other embodiments, the special shape can also be a regular shape with part of the side deformed. In some embodiments, the through hole 2111 can also be a regular shape, such as a circle or an ellipse.
[0047] In some embodiments, the side of the support wall 211 opposite to the accommodation cavity 213 can be provided with at least one protrusion 2112. In some embodiments, the at least one protrusion can be provided on at least one side of the through hole 2111. In some embodiments, the protrusion 2112 can be one, and the protrusion 2112 can be annular and extend along the circumference of the through hole 2111. The protrusion 2112 can be in contact with the end wall 3211 of the inner conductor unit 30, so as to avoid the entire support wall 211 of the fixing unit 20 being in contact with 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, and further reducing the heat transfer to the inner conductor unit 30, reducing the heat loss of the aerosol generating substrate 100, and reducing the heat dissipation to the outside. In some embodiments, the protrusion 2112 can be an integral structure with the support wall 211, and in some embodiments, the protrusion 2112 can also be more than one, and can be a plurality of protrusions 2112 which can be spaced apart along the circumference of the through hole 2111.
[0048] In some embodiments, the side of the support wall 211 opposite to the accommodation cavity 213 can be provided with a first accommodation groove 2113, and the first accommodation groove 2113 can be formed in the protrusion 2112. The first accommodation groove 2113 can be a circular groove, and can be used to accommodate the at least partial sealing structure 50.
[0049] In some embodiments, the inner side of the support wall 211 can be provided with a plurality of support bosses 2114 which can be spaced apart along the circumference of the through hole 2111, and the space between two adjacent support bosses 2114 can form at least part of the airflow passage. The support boss 2114 can serve to support the aerosol generating substrate 100.
[0050] In some embodiments, the fixing unit 20 is provided with an air guide groove 214, and specifically, the air guide groove 214 can be provided along the axial direction of the accommodation portion 21 and extend from the plug-in opening 212 to the support wall 211, and can be used for the external gas to enter the fixing unit 20, and the air guide groove 214 and the aerosol generating substrate 100 can form an airflow passage. Generally, the inner side wall of the fixing unit 20 is provided with a plurality of bosses 215 which are spaced apart, and the space between two adjacent bosses 215 can form the air guide groove 214. Each boss 215 can extend from the plug-in opening 212 to the support wall 211, and can be substantially L-shaped.
[0051] As Figure 7As shown, in some embodiments, the inner conductor unit 30 can include a radiation structure 31 and an inner conductor body 32, the radiation structure 31 can be clamped and fixed on the inner conductor body 32, and part of it can pass through the through hole 2111 into the accommodating cavity 213. When the aerosol generating substrate 100 is assembled with the fixing unit 20, the radiation structure 31 can be partially inserted into the aerosol generating substrate 100 and coaxially arranged with the aerosol generating substrate 100, and the radiation structure 31 can heat the aerosol generating substrate 100 by radiating microwaves to generate aerosol. The inner conductor body 32 can be sleeved on the outer periphery of the fixing unit 20 and can partially pass out from the outer conductor unit 10. The inner conductor body 32 can be in ohmic contact with the outer conductor unit 10.
[0052] As shown in FIGS. 1 and 2, in some embodiments, the radiation structure 31 can be in a columnar shape, specifically, it can be substantially needle-shaped, and the radiation structure 31 can be selected as a flat-tipped needle structure. Generally, the width of the flat-tipped needle can ensure that the temperature can be measured when it contacts the aerosol generating substrate 100, and the thickness and the needle tip are beneficial to piercing the plug of the aerosol generating substrate 100; at the same time, the flat-tipped needle structure can avoid the problem of needle sticking after the aerosol generating substrate 100 shrinks, that is, the aerosol generating substrate 100 shrinks after heating and adheres to the outside of the radiation structure 31. In other embodiments, the radiation structure 31 can not be limited to the flat-tipped needle structure, and in some embodiments, the radiation structure 31 can also be a round needle structure. Figure 8 Figure 9 As shown in FIGS. 1 and 2, in some embodiments, the radiation structure 31 can be in a columnar shape, specifically, it can be substantially needle-shaped, and the radiation structure 31 can be selected as a flat-tipped needle structure. Generally, the width of the flat-tipped needle can ensure that the temperature can be measured when it contacts the aerosol generating substrate 100, and the thickness and the needle tip are beneficial to piercing the plug of the aerosol generating substrate 100; at the same time, the flat-tipped needle structure can avoid the problem of needle sticking after the aerosol generating substrate 100 shrinks, that is, the aerosol generating substrate 100 shrinks after heating and adheres to the outside of the radiation structure 31. In other embodiments, the radiation structure 31 can not be limited to the flat-tipped needle structure, and in some embodiments, the radiation structure 31 can also be a round needle structure.
[0053] In some embodiments, the radiation structure 31 can include a radiation part 311 and a connecting part 312, the radiation part 311 can be arranged to pass into the accommodating cavity 213 and can be inserted into the aerosol generating substrate 100 as a whole. The connecting part 312 can be arranged at one end of the radiation part 311 and can be inserted and clamped and fixed on the inner conductor body 32. In some embodiments, the radiation part 311 is arranged flat, and a sharp top structure 3111 can be arranged at the end away from the connecting part 312, and the sharp top structure 3111 is beneficial to the radiation part 311 passing through the plug of the aerosol generating substrate 100 and being inserted into the aerosol generating substrate 100. In some embodiments, the cross section of the radiation part 311 can be substantially elliptical, rectangular, etc. The thickness of the connecting part 312 can be greater than the thickness of the radiation part 311. The cross section of the connecting part 312 can be substantially circular, square. Generally, the connecting part 312 and the radiation part 311 can be an integrally formed structure, and the radiation structure 31 can be a round needle-shaped preform, and the radiation structure 31 can be formed by flattening the middle part of the round needle-shaped preform to form a flat radiation part 311 and a cylindrical connecting part 312.
[0054] 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.
[0055] 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.
[0056] 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.
[0057] 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.
[0058] 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.
[0059] In some embodiments, the barrel 321 comprises an end wall 3211 and an annular wall 3212 arranged on the end wall 3211 and extending along the circumference of the end wall 3211. The end wall 3211 is arranged towards the fixing unit 20 and is arranged with a gap between the end wall 3211 and the partial support wall 211. The gap can reduce the contact area between the support wall 211 and the end wall 3211, thereby reducing heat conduction. Specifically, the end wall 3211 can only be in contact with the protrusion 2112, so that the end wall 3211 and the support wall 211 are arranged with a gap on the inner and outer sides of the protrusion 2112. In some embodiments, one end of the barrel 321 is provided with an opening 3213, which can be arranged opposite to the end wall 3211 to facilitate assembly of the barrel 321 and the fixing unit 20. In some embodiments, the end wall 3211 is provided with a second accommodating groove 3214, which can be arranged opposite to the first accommodating groove 2113. The second accommodating groove 3214 can accommodate at least part of the sealing structure 50, i.e., the first accommodating groove 2113 and the second accommodating groove 3214 can form an accommodating space for accommodating the sealing structure 50.
[0060] In some embodiments, the columnar body 322 can comprise a first columnar portion 322a and a second columnar portion 322b. One end of the first columnar portion 322a can be connected to the barrel 321. The second columnar portion 322b can be connected to the end of the first columnar portion 322a away from the barrel 321. In some embodiments, the first columnar portion 322a and the second columnar portion 322b are both cylindrical. The outer diameter of the first columnar portion 322a can be greater than the outer diameter of the second columnar portion 322b. A step can be formed between the second columnar portion 322b and the first columnar portion 322a, which can be arranged on the bottom wall 11 of the outer conductor unit 10 and in contact with the bottom wall of the outer conductor unit 10 to form a good ohmic contact. The second columnar portion 322b can pass through the via hole 111, and the outer side wall of the second columnar portion 322b is provided with an external thread structure. The second columnar portion 322b can be screwed with the screwing structure 60, thereby achieving connection and fixation with the outer conductor unit 10. In some embodiments, the screwing structure 60 can be a nut, which can be sleeved on the second columnar portion 322b and screwed with the external thread structure of the second columnar portion 322b.
[0061] In some embodiments, the inner conductor body 32 has a mounting hole 3221 which can be formed in the end wall 3211 and extends through the whole cylindrical body 322. The mounting hole 3221 is located at the central axis of the inner conductor body 32 and communicates with the cylindrical body 32. The radiation structure 31 can be mounted in the mounting hole 3221, and part of the side wall of the radiation structure 31 can be in contact with at least part of the hole wall of the mounting hole 3221. In some embodiments, preferably, part of the side wall of the radiation structure 31 can be in contact with part of the hole wall of the mounting hole 3221 so that the radiation structure 31 forms an ohmic contact with the inner conductor body 32, and the part of the side wall of the radiation structure 31 and the part of the hole wall of the mounting hole 3221 are spaced apart, i.e., the radiation structure 31 is not in complete contact with the inner conductor body 32, thereby reducing heat conduction. Specifically, part of the side wall of the connecting portion 312 can be in contact with part of the hole wall of the mounting hole 3221, and the connecting portion 312 can be clamped and fixed so that the radiation structure 31 is integrally arranged on the inner conductor body 32.
[0062] In some embodiments, a clamping structure 3222 can be arranged in the mounting hole 3221, which can be used to clamp and fix the radiation structure 31. In some embodiments, the clamping structure 3222 can be formed by at least two protrusions which can be arranged in the mounting hole 3221 and are spaced apart along the circumference of the mounting hole 3211, and can protrude towards the radiation structure 31 to contact the radiation structure 31. In some embodiments, the protrusions can be three, which are spaced apart and respectively extend towards the radiation structure 31 to contact the radiation structure 31, and the three protrusions cooperatively clamp the connecting portion 312 of the radiation structure 31, thereby fixing the radiation structure 31 with the inner conductor body 32. By selecting the protrusions, the coaxiality of the radiation structure 31 and the inner conductor body 32 can be ensured, and the processing and manufacturing are facilitated. In other embodiments, the protrusions are not limited to three, and can be two or more than three (such as four or five). Each protrusion can be a strip which extends along the axial direction of the first cylindrical portion 322a. In other embodiments, the protrusions are not limited to strips, and can also be dots. The spacing between the adjacent protrusions can be used to reduce the contact area between the radiation structure 31 and the inner conductor body 32.
[0063] In some embodiments, the protrusions are integrally formed with the inner conductor body 32. Generally, the protrusions can be formed by protruding part of the hole wall of the mounting hole 3221 towards the connecting portion 312 of the radiation structure 31.
[0064] In some other embodiments, the clamping structure 3222 can not be integrally formed with the inner conductor body 32. The clamping structure 3222 can 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, which can be a clamping structure, a bonding structure, or the like. In some embodiments, the clamping structure 3222 can also be fixed in the mounting through hole 3221 by welding.
[0065] In some other embodiments, the protrusion is not limited to clamping and fixing the radiating structure 31. The protrusion can be connected and fixed to the radiating structure 31 by a connecting structure, which can be a bonding structure or a clamping structure. For example, a clamping position can be provided on the radiating structure 31, and the protrusion can be clamped on the clamping position of the radiating structure 31.
[0066] In some embodiments, the protrusion can protrude towards the radiating structure 31 by a protruding thickness of 2-5 mm. Further, the protruding thickness of the protrusion can be selected to be 2-3 mm. By selecting the protrusion with the size, the radiating structure 31 can be fixed.
[0067] In some embodiments, the microwave heating assembly further comprises a shielding cover 40, which can cover the assembly opening 12 of the outer conductor unit 10, so as to reduce microwave leakage. In some embodiments, the shielding cover 40 can be partially embedded in the outer conductor unit 10 from the assembly opening 12, and can be in interference fit with the outer conductor unit 10. The limiting flange 22 of the fixing unit 20 can be pressed on the shielding cover 40.
[0068] In some embodiments, the microwave heating assembly further comprises a sealing structure 50, which is at least partially arranged at the through hole 2111 and between the radiating structure 31 and the fixing unit 20. The sealing structure 50 can seal at least part of the gap between the fixing unit 20 and the inner wall of the through hole 2111 and the radiating structure 31, at least part of the gap between the fixing unit 20 and the inner conductor body 32, and / or at least part of the gap between the inner conductor body 32 and the radiating structure 31, so as to isolate aerosol or condensed liquid and reduce leakage of the condensed liquid from the through hole 2111.
[0069] In some embodiments, the sealing structure 50 can be in interference fit with the hole wall of the through hole 2111 and the outer wall of the radiating structure 31. The sealing structure 50 can be partially accommodated in the first accommodating groove 2113 and the second accommodating groove 3214, and partially embedded in the through hole 2111 and between the radiating structure 31 and the hole wall of the through hole 2111. By arranging the sealing structure 50, good sealing can be achieved, the air tightness of the microwave heating assembly can be improved, and the reliability of the microwave heating assembly in operation can be ensured.
[0070] In some embodiments, the sealing structure 50 can be a gel filler, which can be at least partially filled between the radiation structure 31 and the through hole 2111. The gel filler is selected to facilitate the sealing of the special-shaped radiation structure 31, in particular, the gel filler can be injected into the first accommodating groove 2113 and the second accommodating groove 3214, thereby achieving sealing.
[0071] In other embodiments, the sealing structure 50 can not be limited to a gel filler, and can also be a sealing ring, which can be sleeved on part of the outer periphery of the radiation structure 31, in particular, can be sleeved on part of the outer periphery of the connecting portion 312 of the radiation structure 31, and can be in interference fit with the through hole 2111 and the connecting portion 312, and part of which can extend into the first accommodating groove 2113 and be in gapless fit with the groove wall of the first accommodating groove 2113.
[0072] In some embodiments, the aerosol generating device can further include an airflow detection unit, which can be in communication with the air guide column 23 and can be located on the side of the air guide column 23 away from the accommodating portion 21. The airflow detection unit can be used to sense the flow of airflow in the sensing air channel 231 of the air guide column 23 to achieve the counting of the number of puffs. In some embodiments, the airflow detection unit can be a microphone or a mems. During puffing, a negative pressure is generated inside the sensing air channel 231, which triggers the microphone or the mems to achieve the counting of the number of puffs. By arranging the sensing air channel 231 on the upper part of the outer conductor unit 10 and the shielding cover 40, the condensation of aerosol in the sensing air channel 231 can be reduced, and the failure caused by the condensate blocking the sensing air channel 231 can be avoided. By arranging the sensing air channel 231 outside the cavity 13, the sensing air channel 231 can be away from the heated aerosol generating substrate 100, which can avoid damage to the airflow detection unit caused by the sensing air channel 231 being too hot, and can avoid punching holes on the outer conductor unit 10, which is conducive to the sealing of the cavity 13.
[0073] Figures 12 to 14 A second embodiment of the aerosol generating device of the present application is shown, which is different from the first embodiment in that the microwave heating assembly further includes a temperature measurement assembly 314, which includes a temperature measurement structure 3141, and in particular, the temperature measurement structure 3141 can be arranged on the radiation portion 311. The temperature measurement structure 3141 can be used to detect the temperature in the fixing unit 20, and thus the heating temperature can be controlled. By arranging the temperature measurement structure 3141 on the radiation portion 311, the temperature of the aerosol generating substrate 100 can be conveniently conducted to the temperature measurement structure 3141, the temperature transmission path can be shortened, the difference between the temperature of the temperature measurement structure 3141 and the temperature of the aerosol generating substrate 100 can be reduced, and the temperature measurement can be faster and more accurate.
[0074] In the embodiment, the temperature measuring assembly 314 can be two, which can be arranged on the two opposite surfaces of the radiation portion 311. In other embodiments, the temperature measuring assembly 314 can also be one or more than two.
[0075] Specifically, the temperature measuring structure 3141 can be arranged on the surface of the radiation portion 311 and can extend along the axial direction of the radiation portion 311. In the embodiment, the temperature measuring structure 3141 can be a temperature measuring film made of PTC material, which can be Pt, Pt-Ru, Ag-pd, etc. The temperature measuring film can be formed on the surface of the radiation portion 311 by a conventional method such as silk printing. Of course, it can be understood that in other embodiments, the temperature measuring structure 3141 can also not be limited to a temperature measuring film, but can also be a conventional temperature sensor. In some embodiments, the surface of the radiation portion 311 can be provided with a fixing structure for fixing the temperature sensor, such as a fixing clamping position on the surface of the radiation portion 311.
[0076] In the embodiment, the temperature measuring assembly 314 further comprises an isolation layer 3140, which can be arranged between the temperature measuring structure 3141 and the radiation portion 311, and can isolate the temperature measuring structure 3141 and the radiation portion 311, thereby preventing the temperature measuring structure 3141 from short-circuiting. In some embodiments, the isolation layer 3140 can be an insulating layer, which can be formed on the surface of the radiation 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 radiation portion 311 by silk printing. In some embodiments, the isolation layer 3140 can be selected from glass glaze, inorganic coating, etc.
[0077] In the embodiment, the temperature measuring assembly 314 further comprises 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 arranged on the side of the isolation layer 3140 opposite to the radiation portion 311 and can extend along the axial direction of the radiation portion 311 to be connected to the control circuit.
[0078] In the embodiment, the temperature measuring assembly 314 further comprises a protective layer 3143 arranged on the surface of the temperature measuring structure 3141 facing the aerosol generating substrate 100, which can prevent the temperature measuring structure 3141 from being contaminated by the aerogel and causing the temperature measuring structure 3141 to fail. 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 short-circuiting. In some embodiments, the protective layer 3143 can be made of insulating material, which can be glass glaze, inorganic coating, etc.
[0079] It can be understood that the above embodiment only expresses the preferred embodiment of the utility model, the description is more specific and detailed, but it can not be understood as the limitation of the utility model patent scope; it should be pointed out that for ordinary skilled person in the art, the above technical features can be freely combined without departing from the concept of the utility model, and a number of deformations and improvements can be made, which belong to the protection scope of the utility model; therefore, any equivalent transformation and modification within the scope of the utility model patent claim should belong to the scope of the utility model patent claim.
Claims
1. A microwave heating assembly, characterized by, The inner conductor unit (30) comprises: An inner conductor body (32) having a mounting through hole (3221); A radiation structure (31) mounted in the mounting through hole (3221); part of the side wall of the radiation structure (31) is in contact with part of the hole wall of the mounting through hole (3221), and a gap is left between part of the side wall of the radiation structure (31) and part of the hole wall of the mounting through hole (3221).
2. The microwave heating assembly of claim 1, wherein, At least two protrusions are arranged in the mounting through hole (3221); the at least two protrusions are arranged in a circumferential direction of the mounting through hole (3221) and protrude towards the radiation structure (31) to contact the radiation structure (31).
3. The microwave heating assembly of claim 2, wherein, The at least two protrusions form a clamping structure (3222) for clamping and fixing the radiation structure (31).
4. The microwave heating assembly of claim 2, wherein, The protrusions are integrally formed with the inner conductor body (32).
5. The microwave heating assembly of claim 3, wherein, The protrusion thickness of the protrusions protruding towards the radiation structure (31) is 2-5mm.
6. The microwave heating assembly of claim 1, wherein, The microwave heating assembly has a containing cavity (213) for containing at least part of the aerosol generating substrate; The radiation structure (31) comprises a radiation part (311) and a connecting part (312); the radiation part (311) is arranged in the containing cavity (213); the connecting part (312) is arranged at one end of the radiation part (311) and is mounted in the mounting through hole (3221); part of the side wall of the connecting part (312) is in contact with part of the hole wall of the mounting through hole (3221).
7. The microwave heating assembly of claim 6, wherein, The radiation part (311) is arranged in a flat manner; And / or, the thickness of the connecting part (312) is greater than the thickness of the radiation part (311); And / or, one end of the radiation part (311) is provided with a pointed top structure (3111).
8. The microwave heating assembly of claim 6, wherein, The radiation part (311) is provided with a temperature measuring structure.
9. The microwave heating assembly of claim 1, wherein, The inner conductor body (32) comprises a cylindrical body (321) and a columnar body (322); one end of the cylindrical body (321) is provided with an opening; the columnar body (322) is arranged at the end of the cylindrical body (321) away from the opening; the mounting through hole (3221) is arranged in the columnar body (322) and communicates with the cylindrical body (321).
10. An aerosol generating device, characterized by, The microwave heating assembly comprises the microwave heating assembly according to any one of claims 1-9 and a microwave feeding unit (70) connected with the microwave heating assembly.