Aerosol generation device and microwave heating assembly therefor

Abstract

This utility model relates to an aerosol generating device and its microwave heating assembly. The microwave heating assembly includes: an outer conductor unit defining a cavity on its inner side and having a supporting wall; an inner conductor unit housed in the cavity and connected to the outer conductor unit; the inner conductor unit is provided with at least two mounting holes for fastening to the supporting wall. By providing at least two mounting holes in the inner conductor unit, the microwave heating assembly can be fastened to the supporting wall, improving upon previous microwave heating assembly connection methods that resulted in low space utilization and facilitating the miniaturization design of the entire device.

Description

Technical Field

[0001] This utility model relates to the field of aerosol generation technology, and in particular to an aerosol generating device and its microwave heating component. Background Technology

[0002] Currently, microwave heating has the advantages of rapid heating and rapid aerosol generation. Aerosol generation devices using microwave heating are generally based on the principle of a quarter-wavelength coaxial resonant cavity. The heating cavity will form electromagnetic resonance in the frequency range of 2.4GHz to 2.5GHz. The aerosol generating matrix absorbs electromagnetic energy and heats up rapidly, thereby generating aerosols.

[0003] In related technologies, the installation method of the outer conductor unit and the inner conductor unit usually involves machining a single irregular hole at the bottom of the outer conductor unit and machining a corresponding irregular threaded post at the bottom of the inner conductor unit. The irregular threaded post passes through the irregular hole, and the connection is made by fastening a single nut on the outside of the bottom of the outer conductor. The defects and shortcomings of this connection method are as follows: on the one hand, the nut fastening method occupies the space on the outside of the bottom of the cavity, which is not conducive to the stacking and miniaturization of the whole machine; on the other hand, not all components in the microwave heating assembly are symmetrically arranged. The inner conductor unit usually needs to be oriented, but the machining tolerance of the irregular threaded post and the irregular hole is large, the positioning accuracy is insufficient, and the concentricity of the inner and outer conductors is difficult to guarantee. 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 outer conductor unit has an inner cavity defined by a supporting wall.

[0007] An inner conductor unit is housed within the cavity and connected to the outer conductor unit; the inner conductor unit is provided with at least two mounting holes for fastening to the support wall.

[0008] In some embodiments, there are two mounting holes, which are symmetrically arranged on two opposite sides of the central axis of the protrusion;

[0009] And / or, the mounting hole includes a blind hole.

[0010] In some embodiments, the microwave heating assembly further includes a fastening assembly, which includes at least two fasteners, each of which is provided in a one-to-one correspondence with at least two mounting holes. Each fastener protrudes from the support wall and is installed into the corresponding mounting hole to fasten the inner conductor unit to the support wall.

[0011] In some embodiments, the fastener has an external thread structure, and the inner wall of the mounting hole is provided with an internal thread that mates with the external thread structure.

[0012] In some embodiments, the inner conductor unit includes an end wall disposed toward the support wall, and at least two mounting holes are disposed on the end wall.

[0013] In some embodiments, the end wall is provided with a protrusion extending toward the support wall; the mounting hole is formed on the protrusion.

[0014] In some embodiments, the support wall is provided with at least two through holes; at least two mounting holes are provided in a one-to-one correspondence with at least two through holes.

[0015] In some embodiments, there are two fasteners and two through holes, which are located on opposite sides of the central axis of the support wall.

[0016] In some embodiments, the support wall is provided with positioning holes for positioning and mounting the inner conductor unit;

[0017] At least two of the vias are spaced apart in the circumferential direction of the positioning hole.

[0018] In some embodiments, the microwave heating assembly further includes a temperature measuring structure having temperature measuring leads;

[0019] The inner conductor unit is provided with a lead hole for the temperature measuring lead to be led out; the lead hole is located at the central axis of the inner conductor unit.

[0020] An aerosol generating device is constructed, comprising the microwave heating component described in this invention, and a microwave feed unit connected to the microwave heating component.

[0021] The implementation of the aerosol generating device and its microwave heating component of this utility model has the following beneficial effects: the microwave heating component has at least two mounting holes in the inner conductor unit, and can be fastened to the support wall through the mounting holes, which improves the low space utilization caused by the previous microwave heating component connection method, is conducive to the miniaturization design of the whole machine stack, and improves the positioning accuracy and concentricity of the inner conductor unit. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the aerosol generating device in some embodiments of this utility model;

[0024] Figure 2 yes Figure 1 A cross-sectional view of the aerosol generating device shown.

[0025] Figure 3 yes Figure 2 The diagram shows the structure of the microwave heating component.

[0026] Figure 4 yes Figure 2 A cross-sectional view of the microwave heating assembly shown.

[0027] Figure 5 yes Figure 4 A schematic diagram of the outer conductor unit structure of the microwave heating assembly shown.

[0028] Figure 6 yes Figure 4 A schematic diagram of the fixed unit structure of the microwave heating assembly shown.

[0029] Figure 7 yes Figure 6 A cross-sectional view of the fixing unit of the microwave heating assembly shown.

[0030] Figure 8 yes Figure 4 A schematic diagram of the radiation structure of the inner conductor unit in the microwave heating assembly shown.

[0031] Figure 9 yes Figure 8 A schematic diagram of the inner conductor body structure of the inner conductor unit in the microwave heating assembly shown.

[0032] Figure 10 yes Figure 8 A schematic diagram of the inner conductor body from another angle is shown.

[0033] Figure 11 yes Figure 9 The diagram shows a cross-sectional view of the inner conductor body. Detailed Implementation

[0034] 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," "bottom," "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.

[0035] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "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," "third," 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," "third," 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.

[0036] Figure 1 and Figure 2 Some preferred embodiments of the aerosol generating device 100 of this invention are shown. The aerosol generating device 100 generates aerosols for user inhalation by feeding microwaves to heat the aerosol generating matrix. The aerosol generating matrix is ​​detachably disposed within the aerosol generating device 100. In some embodiments, the aerosol generating matrix 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.

[0037] like Figure 1 and Figure 2 As shown, in some embodiments, the aerosol generating device 100 is generally cylindrical, and may be roughly similar in shape to a pen. The aerosol generating device 100 includes a housing 10, a microwave heating assembly 20, a microwave feed unit 30, a heat dissipation structure 40, and a microwave generating unit 50. The housing 10 houses the microwave heating assembly 20, the microwave feed unit 30, the heat dissipation structure 40, and the microwave generating unit 50. The microwave heating assembly 20 is housed within the housing 10, and after receiving microwaves, it generates a microwave energy field within itself, thereby heating the aerosol generation matrix. The microwave feed unit 30 is mounted on the microwave heating assembly 20 and is used to feed microwaves. The heat dissipation structure 40 is axially disposed within the housing 10 along with the microwave heating assembly 20, and it is used to dissipate heat from the microwave generating unit 50. The microwave generating unit 50 can be connected to the microwave feed unit 30, and the microwaves generated by the microwave generating unit 50 can be fed into the microwave heating assembly 20 via the microwave feed unit 30.

[0038] In some embodiments, the outer casing 10 is generally cylindrical and is a hollow structure with both ends open. One end of the outer casing 10 may be provided with a plug-in port 11, which can be used for inserting and installing the aerosol generation matrix. In some embodiments, the outer casing 10 can be a metal or plastic shell. The material of the outer casing 10 is generally aluminum alloy, but in some embodiments it can also be stainless steel, iron alloy, titanium alloy, or other metal materials. In some embodiments, it can also be made of plastic materials such as ABS, PC, and PPSU. The outer casing 10 generally serves a decorative and aesthetic purpose.

[0039] In some embodiments, a top cover 12 may be provided at one end of the housing 10. The top cover 12 may be annular, and the insertion / removal port 11 may be formed in the top cover 12. The top cover 12 can be used to fix the microwave heating assembly in the housing 10 and can also serve a sealing function. In some embodiments, the top cover 12 may be a metal or plastic housing. The material of the top cover 12 is generally aluminum alloy. In some embodiments, the material of the top cover 12 may also be stainless steel, iron alloy, titanium alloy, or other metal materials. In some embodiments, the material of the top cover 12 may also be ABS, PC, PPSU, or other plastic materials. The top cover 12 generally serves a decorative and aesthetic purpose.

[0040] In some embodiments, a bottom cover 13 may be provided at the other end of the housing 10. The bottom cover 13 may be made of metal or plastic, and is generally made of metal materials such as stainless steel, iron alloy, and titanium alloy. In other embodiments, the housing 10 may also be made of plastic materials such as ABS, PC, and PPSU. The bottom cover 13 is used to seal the bottom of the housing 10. In some embodiments, a charging interface may be provided on the bottom cover 13 for external power supply access.

[0041] like Figures 3 to 5 As shown, in some embodiments, the microwave heating assembly 20 may include an outer conductor unit 21, which is made of metal or other highly conductive material to confine the microwave energy therein. Generally, the outer conductor unit 21 may be made of gold, silver, copper, aluminum, iron, gold-containing alloys, aluminum-containing alloys, copper-containing alloys, iron-containing alloys, stainless steel, etc. In some embodiments, the outer conductor unit 21 is a cylindrical structure, which may be a regular shape, such as a cuboid or a cylinder. In some embodiments, the outer conductor unit 21 may be an irregular shape. Specifically, in this embodiment, the outer conductor unit 21 is an irregular shape formed by partial outward convexity or inward concavity.

[0042] In some embodiments, a cavity 210 is formed inside the outer conductor unit 21. The outer conductor unit 21 may include an opening 211 and a support wall 212. The cavity 210 is formed between the opening 211 and the support wall 212. The opening 211 communicates with the cavity 210 and may be disposed opposite to the insertion / removal port 11. The support wall 212 may be disposed opposite to the opening 211.

[0043] In some embodiments, a positioning hole 2121 may be provided on the support wall 212. The positioning hole 2121 may be located at the central axis of the support wall 212 and may be used for positioning and installing the inner conductor unit 23. In some embodiments, the positioning hole 2121 may be a circular through hole. In some embodiments, at least two through holes 2122 may be provided on the support wall 212, and the at least two through holes 2122 may be spaced apart circumferentially along the positioning hole 2121. In some embodiments, there may be two, three, or four through holes, etc., for fasteners 241 to pass through. Generally, there may be two through holes 2122, and the two through holes 2122 may be located on two opposite sides of the central axis of the support wall 212. The two through holes may be symmetrically arranged with the central axis of the support wall 212 as the axis of symmetry, which is beneficial for the installation and positioning of the inner conductor unit 23 and can make the inner conductor unit 23 be subjected to uniform force during installation. In some embodiments, the through hole 2122 may be a circular through hole. In some embodiments, a fixing hole 2123 may be provided on the support wall 212. The fixing hole 2123 may be provided on one side of the positioning hole 2121 and located between the two through holes 2122. The fixing hole 2123 can be used to install and fix the microwave feed unit 30. In some embodiments, one of the at least two through holes 2122 may be selected as the fixing hole 2123. In some embodiments, the fixing hole 2123 may be a circular through hole. In other embodiments, the fixing hole 2123 may not be limited to being provided on the support wall 212, and may be provided on the side wall of the outer conductor unit 21.

[0044] Understandably, in some other embodiments, the positioning hole 2121, through hole 2122, and fixing hole 2123 may not be limited to being circular; they may also be square, pentagonal, hexagonal, etc.

[0045] like Figures 6 to 7As shown, in some embodiments, the microwave heating assembly 20 may further include a fixing unit 22. The fixing unit 22 is housed in the cavity 210 of the outer conductor unit 21. The fixing unit 22 may be coaxially and oppositely disposed to the insertion port 11. The fixing unit 22 can be used to fix the aerosol generating matrix and can form a heat insulation structure to reduce heat loss. In some embodiments, the fixing unit 22 may be cylindrical, and one end has an assembly port 221 communicating with the insertion port 11. An accommodating cavity 220 may be formed on the inner side of the fixing unit 22, which can be used to accommodate the aerosol generating matrix. The fixing unit 22 has a baffle wall 222, which can serve to support and block the aerosol generating matrix. In some embodiments, the baffle wall 222 may be provided with a through hole 2221, which may be located at the central axis of the baffle wall 222 for the inner conductor unit 23 to pass through. In some embodiments, the inner sidewall of the fixing unit 22 may be provided with an airflow channel 223, which may extend from the assembly port 221 to the baffle 222. Generally, the airflow channel 223 can be formed by opening an air guide groove or providing an air guide protrusion on the inner sidewall of the fixing unit 22 and the baffle 222. In some embodiments, the sidewall of the fixing unit 22 may be provided with an airflow hole 224, which may communicate with the airflow sensing structure for supplying airflow to trigger the airflow sensing structure. The airflow sensing structure may be a conventional airflow sensor.

[0046] In some embodiments, the fixing unit 22 may be made of an electrically insulating material with good wave transmission performance. For example, the fixing unit 22 may be made of polytetrafluoroethylene, PEEK, quartz glass, alumina, titanium dioxide, zirconium oxide, etc.

[0047] like Figure 4 , Figures 8 to 11 As shown, the microwave heating assembly 20 may further include an inner conductor unit 23. The inner conductor unit 23 can be housed in the cavity 210 and can be connected and fixed to the outer conductor unit 21 by a fastening assembly 24. Specifically, the inner conductor unit 23 may include a radiating structure 231 and an inner conductor body 232. The radiating structure 231 can be clamped and fixed to the inner conductor body 232 and can partially extend into the accommodating cavity 220. When the aerosol generating matrix is ​​assembled with the fixing unit 22, the radiating structure 231 can be partially inserted into the aerosol generating matrix and coaxially arranged with the aerosol generating matrix. The radiating structure 231 can heat the aerosol generating matrix by radiating microwaves to generate aerosols. The inner conductor body 232 can be sleeved on the outer periphery of the fixing unit 22 and can be partially fixed and installed through the positioning hole 2121. The inner conductor body 232 can contact the outer conductor unit 21 to form an ohmic contact.

[0048] In some embodiments, the radiating structure 231 may be made of a highly conductive metal material to radiate microwaves, such as 304 / 316 stainless steel. The radiating structure 231 may be columnar, specifically, it may be approximately needle-shaped, and may be a flat-tipped needle structure. Generally, the width of the flat-tipped needle ensures temperature measurement when in contact with the aerosol generating matrix, while its thinness and pointed tip facilitate piercing the blockage of the aerosol generating matrix. Simultaneously, the flat-tipped needle structure avoids the problem of needle adhesion after the aerosol generating matrix shrinks upon heating, i.e., the aerosol generating matrix shrinks and adheres to the outside of the radiating structure 231. In other embodiments, the radiating structure 231 is not limited to a flat-tipped needle structure; in some embodiments, the radiating structure 231 may also be a round needle structure.

[0049] In some embodiments, the radiating structure 231 may include a radiating portion 231a and a radiating portion 231b. The radiating portion 231a may be inserted into the receiving cavity 220 and can be integrally inserted into the aerosol generating matrix. The radiating portion 231b may be disposed at one end of the radiating portion 231a and can be inserted and clamped to the inner conductor body 232. In some embodiments, the radiating portion 231a is flat, and a pointed structure 2311 may be provided at the end away from the radiating portion 231b. By providing the pointed structure 2311, it is beneficial for the radiating portion 231a to pass through the plug of the aerosol generating matrix and insert into the aerosol generating matrix. In some embodiments, the cross-section of the radiating portion 231a may be approximately elliptical, rectangular, or the like. The thickness of the radiating portion 231b may be greater than the thickness of the radiating portion 231a. The cross-section of the radiating portion 231b may be approximately circular or square. Generally, the radiating part 231b and the radiating part 231a can be an integrally formed structure. The radiating structure 231 can be a round needle-shaped preform. The flat radiating part 231a and the cylindrical radiating part 231b are formed by flattening the middle of the round needle-shaped preform.

[0050] In some embodiments, the inner side of the radiating structure 231 may be hollow, and the end away from the pointed structure 2311 may be open. A wiring channel 2312 may be formed inside the radiating structure 231, through which temperature sensing leads (such as NTC leads) can be led out.

[0051] In some embodiments, the inner conductor body 232 may be made of a metallic material or other highly conductive material. For example, the inner conductor body 232 may be made of gold, silver, copper, aluminum, iron, gold-containing alloys, aluminum-containing alloys, copper-containing alloys, iron-containing alloys, stainless steel, etc. The surface of the inner conductor body 232 may be plated with a conductive material to enhance conductivity and facilitate soldering. The conductive material may be silver.

[0052] The inner conductor body 232 may include a cylindrical body 232a and a protrusion 232b. The cylindrical body 232a may be sleeved on the outer periphery of a portion of the fixing unit 22. Specifically, the cylindrical body 232a may be sleeved on the outer periphery of a portion of the fixing unit 22. The cylindrical body 232a may be clearance-fitted with the fixing unit 22. The protrusion 232b is disposed at one end of the cylindrical body 232a, and a positioning boss 232c is provided on the side opposite to the cylindrical body 232a. The positioning boss 232c may be inserted into the positioning hole 2121 of the outer conductor unit 21, and may contact the outer conductor unit 21 to form an ohmic contact, thereby connecting the inner conductor unit 23 to the outer conductor unit 21. In some embodiments, the cylindrical body 232a, the protrusion 232b, and the positioning boss 232c are integrally formed structures.

[0053] In some embodiments, the cylindrical body 232a, the protrusion 232b, and the positioning boss 232c are coaxially arranged. The cylindrical body 232a can be a cylinder with a circular cross-section. In other embodiments, the cylindrical body 232a is not limited to being cylindrical. The cross-section of the protrusion 232b can be generally elliptical. Of course, it is understood that in other embodiments, the cross-section of the protrusion 232b is not limited to being elliptical; it can also be rectangular, and in other embodiments, it can also be circular. In some embodiments, the positioning boss 232c can be a circular boss. In other embodiments, the positioning boss 232c is not limited to being a circular boss.

[0054] In some embodiments, the inner conductor unit 23 has an end wall 2321 disposed toward the support wall 212. Specifically, the end wall 2321 is formed at one end of the cylindrical body 232a. A protrusion 232b is disposed on the end wall 2321 and extends toward the support wall 212. A sleeve interface 2322 may be disposed on the side of the cylindrical body 232a opposite to the end wall 2321, which can be used to fit with the fixing unit 22. A chamber 2320 may be formed inside the cylindrical body 232a. The end wall 2321 has a plug hole 2323 for the radiation structure 231 to be inserted and fixed. The plug hole 2323 is located at the central axis of the inner conductor body 232 and extends from the end wall 2321 to the positioning boss 232c. A clamping structure can be provided inside the plug hole 2323 to clamp and fix the radiation structure 231. Generally, in some embodiments, the clamping structure can be formed by providing a claw extending toward the radiation structure 231 on the hole wall of the plug hole 2323.

[0055] In some embodiments, the inner conductor unit 23 is provided with at least two mounting holes 2324, which are disposed on the end wall 2321 for fastening connection with the support wall 212. The at least two mounting holes 2324 correspond one-to-one with at least two through holes 2122, thus facilitating the installation of fasteners 241 on the fastening assembly 24. Specifically, there can be two mounting holes 2324, which can be formed along the length of the protrusion 232b on the boss 232b and symmetrically arranged on opposite sides of the central axis of the protrusion 232b, thereby ensuring uniform force on the inner conductor body 232 when it is installed with the outer conductor unit 21. The mounting holes 2324 can be circular holes. By making both the mounting holes 2324 and the through holes 2122 circular holes, the processing accuracy can be improved, and concentricity during installation can be guaranteed.

[0056] In some embodiments, a connection hole 2325 for connecting to the microwave feed unit 30 may be provided on the end wall 2321. The connection hole 2325 may be provided on one side of the protrusion 232b and can be used for the microwave feed unit 30 to be inserted.

[0057] For example Figure 4 As shown, in some embodiments, the microwave heating assembly 20 further includes a fastening assembly 24, which can be used to fasten the inner conductor unit 23 to the outer conductor unit 21. In some embodiments, the fastening assembly 24 may include at least two fasteners 241, which are disposed on the inner conductor unit 23 and the support wall 212. In some embodiments, the fasteners 241 may protrude from the support wall 212 and be installed into corresponding mounting holes 2324 to fasten the inner conductor unit 23 to the support wall 212. In some embodiments, the fasteners 241 may be separate from the support wall 212. In other embodiments, the fasteners 241 may also be integrally formed as protrusions on the support wall 212, which can be inserted into the mounting holes 2324.

[0058] In some embodiments, there may be two fasteners 241, each corresponding to a through hole 2122 and a mounting hole 2324. The fastener passes through the through hole 2122 and is inserted into the mounting hole 2324, thereby fixing the inner conductor unit 23 to the support wall 212. This fully utilizes the internal space of the cavity 210 in the outer conductor unit 21, saving stacking space for the microwave generating unit 50 outside the cavity 210, thus facilitating the miniaturization of the entire device. In other embodiments, there may be more than two fasteners 241, such as three or four.

[0059] In some embodiments, the fastener 241 may have an external thread structure, which may be a countersunk screw with a thread diameter generally between M1.2 and M2.5. Correspondingly, the inner wall of the mounting hole 2324 may be provided with an internal thread structure, which may be a threaded hole or a blind hole. The internal thread structure of the mounting hole 2324 may cooperate with the external thread structure of the fastener 241, that is, the fastener 241 may be locked and fixed in the mounting hole 2324, and may be isolated from the cavity 2320 of the inner conductor unit 23 to avoid affecting the installation of the fixing unit 22.

[0060] For example Figure 2 As shown, in some embodiments, the microwave heating assembly 20 further includes a temperature sensing structure 25. The temperature sensing structure 25 is disposed on the radiation structure 231 and can be used to detect the temperature in the fixing unit 22, thereby enabling temperature control. In some embodiments, the temperature sensing structure 25 may include a temperature sensing element and a temperature sensing lead 251. The temperature sensing element may be disposed on the surface of the radiation section 231a, and the temperature sensing lead 251 may be led out from the wiring channel 2312 in the temperature sensing structure 25 and from the outer conductor unit 21. In some embodiments, the temperature sensing lead 251 may be an NTC wire.

[0061] In some embodiments, a lead hole may be provided on the inner conductor unit 23. Specifically, the lead hole may be provided on the end wall 2321, which can be used for the temperature sensing lead 251 to be led out. Specifically, the lead hole is provided at the central axis of the inner conductor unit 23, specifically at the central axis of the end wall 2321, and it may be the same as the insertion hole 2323. In other embodiments, the lead hole may also be offset from the insertion hole 2323. The temperature sensing lead 251 can be led out from the insertion hole 2323 and the positioning hole 2121 and bent.

[0062] In some embodiments, the microwave feed unit 30 can be mounted on the fixing hole 2123. In some embodiments, the microwave feed unit 30 can be an RF connector, which is generally selected as a standard part. In other embodiments, the microwave feed unit 30 can also be customized as a non-standard part according to requirements. The microwave feed unit 30 includes a housing 31, an isolator 32, and a center conductor 33. The housing 31 is sleeved on the outer periphery of the isolator 32, and the center conductor 33 is arranged along the axial direction of the isolator 32, with both ends extending out of the isolator 32. In some embodiments, the housing 31 can be made of copper-plated gold material. The isolator 32 can be made of insulating material, such as glass or ceramic. The center conductor 33 can be a copper-plated gold needle. The center conductor 33 can pass through the cavity 210 and be inserted into the connection hole 2325 to connect with the inner conductor body 232, thereby feeding microwaves into the inner conductor unit 23. In some embodiments, one end of the center conductor 33 inserted into the connection hole 2325 can be welded and fixed to the inner conductor body 232. The end of the center conductor 33 away from the inner conductor body 232 can be welded and fixed to the microwave generating unit 50.

[0063] In some embodiments, the heat dissipation structure 40 and the outer conductor unit 21 can be separate structures, with the heat dissipation structure 40 disposed at one end of the outer conductor unit 21. In some embodiments, one end of the heat dissipation structure 40 can be connected to the support wall 212 and can extend in a direction away from the opening 211. In other embodiments, the heat dissipation structure 40 can also be integrally formed with the outer conductor unit 21, and the two can be integrally formed by injection molding or casting.

[0064] In some embodiments, the microwave generating unit 50 may be disposed in the housing 10 along the axial direction of the outer conductor unit 21. In some embodiments, the microwave generating unit 50 may be an radio frequency board having a high-power high-frequency electromagnetic signal generating circuit to provide high-frequency electromagnetic heating energy to the cavity 210 in the outer conductor unit 21. The operating efficiency of the microwave generating unit 50 is typically between 60% and 65%, and continuous operation will generate a large amount of heat. Generally, the microwave generating unit 50 is tightly attached to the heat dissipation structure 40, and heat is dissipated through the heat dissipation structure 40.

[0065] In some embodiments, the aerosol generating device 100 further includes a shielding structure 60 for isolating the temperature sensing lead 251 and the microwave generating unit. The shielding structure 60 is disposed between the microwave generating unit 50 and the temperature sensing lead 251 to isolate the radio frequency signal and the temperature sensing signal, avoiding mutual interference between the temperature sensing lead and the radio frequency signal line. The shielding structure 60 can be placed on the heat dissipation structure 40. The shielding structure 60 and the heat dissipation structure 40 can work together to define an electromagnetic shielding cavity, thereby preventing high-frequency electromagnetic signal leakage and preventing short circuits or metal interference to electronic components. In some embodiments, the shielding structure 60 can be connected and fixed to the outer conductor unit 21 and / or the heat dissipation structure 40 by providing a connecting component, which can be a screw component or a snap-fit ​​component, etc.

[0066] In some embodiments, the shielding structure 60 is a highly conductive material or a non-metallic material with a metallic coating, preferably an aluminum alloy, but may also be a metallic material such as stainless steel, iron alloy, or titanium alloy.

[0067] In some embodiments, the microwave heating assembly further includes a control board 70, which may be disposed on the side of the shielding structure 60 opposite to the microwave generating unit 50. The control board 70 can be isolated from the microwave generating unit 50 by the shielding structure 60 to prevent the components thereon from being subjected to electromagnetic interference. In some embodiments, the temperature sensing lead 251 may be led out from the outer conductor unit 21 and bent away from the heat dissipation structure 40 to connect with the control board 70.

[0068] In some embodiments, the aerosol generating device 100 further includes a power supply bracket 80 and a power supply 90. The power supply bracket 80 may be disposed in the housing 10 and located at one end of the microwave heating assembly, and can be used to support and fix the power supply 90. In some embodiments, the power supply 90 may be a battery. The power supply 90 may be connected to the control board 70, and it can be repeatedly charged and discharged to provide power to the microwave generating unit 50.

[0069] 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 outer conductor unit (21) defines a cavity (210) on its inner side and has a supporting wall (212). The inner conductor unit (23) is housed in the cavity (210) and connected to the outer conductor unit (21); the inner conductor unit (23) is provided with at least two mounting holes (2324) for fastening to the support wall (212).

2. The microwave heating assembly of claim 1, wherein, There are two mounting holes (2324), which are symmetrically arranged on two opposite sides of the central axis of the inner conductor unit (23); And / or, the mounting hole (2324) includes a blind hole.

3. The microwave heating assembly of claim 1, wherein, The microwave heating assembly further includes a fastening assembly (24), which includes at least two fasteners (241). The at least two fasteners (241) are provided in a one-to-one correspondence with at least two mounting holes (2324). Each fastener (241) protrudes from the support wall (212) and is installed into the corresponding mounting hole (2324) to fasten the inner conductor unit (23) to the support wall (212).

4. The microwave heating assembly of claim 3, wherein, The fastener (241) has an external thread structure, and the inner wall of the mounting hole (2324) is provided with an internal thread that mates with the external thread structure.

5. The microwave heating assembly according to claim 1, characterized in that, The inner conductor unit (23) includes an end wall (2321) disposed toward the support wall (212), and at least two mounting holes (2324) are disposed on the end wall (2321).

6. The microwave heating assembly of claim 5, wherein, The end wall (2321) is provided with a protrusion (232b) extending toward the support wall (212); the mounting hole (2324) is provided on the protrusion (232b).

7. The microwave heating assembly of claim 3, wherein, The support wall (212) is provided with at least two through holes (2122), and at least two mounting holes (2324) are provided in a one-to-one correspondence with at least two through holes (2122).

8. The microwave heating assembly of claim 7, wherein, There are two fasteners (241) and two through holes (2122), which are located on opposite sides of the central axis of the support wall (212).

9. The microwave heating assembly of claim 8, wherein, The support wall (212) is provided with a positioning hole (2121) for positioning and installation with the inner conductor unit (23). At least two of the vias (2122) are spaced apart in the circumferential direction of the positioning hole (2121).

10. The microwave heating assembly of claim 1, wherein, The microwave heating assembly also includes a temperature measuring structure (25), which has a temperature measuring lead (251). The inner conductor unit (23) is provided with a lead hole for the temperature measuring lead (251) to be led out; the lead hole is located at the central axis of the inner conductor unit (23).

11. An aerosol generating device, characterized by, It includes a microwave heating assembly (20) as described in any one of claims 1 to 10, and a microwave feed unit (30) connected to the microwave heating assembly (20).

Images