Microwave heating assembly, aerosol generating device and aerosol generating system

Abstract

The application relates to a microwave heating assembly, an aerosol generating device and an aerosol generating system. The microwave heating assembly comprises an outer conductor unit and at least one inner conductor unit. The outer conductor unit defines a cavity which is in communication with the outside. The at least one inner conductor unit comprises at least two radiation structures. The at least two radiation structures are at least partially arranged in the cavity and extend along the direction of the through hole of the cavity. The application can reduce the strengthened hot spot of the radiation field at the tip of the radiation structure, and the radiation field distribution is relatively uniform.

Description

Technical Field

[0001] This application relates to the field of microwave heating technology, and more specifically, to a microwave heating component, an aerosol generating device, and an aerosol generating system. Background Technology

[0002] Aerosol generation devices employing microwave heating technology are typically designed based on a 1 / 4λ wavelength coaxial resonant cavity structure to ensure that the internal field energy is focused on the inner conductor. However, this design is limited by its underlying principle, as the generated radiation field tends to create strong heating points at the tips of the inner conductor. The presence of these hot spots can lead to overheating at the tips of the inner conductor, which is detrimental to the heating of the aerosol-generated product. Utility Model Content

[0003] The technical problem to be solved by this application is to provide a microwave heating component, an aerosol generating device, and an aerosol generating system, in view of the above-mentioned deficiencies of the prior art.

[0004] The technical solution adopted by this application to solve its technical problem is: constructing a microwave heating assembly, including:

[0005] The outer conductor unit defines a cavity with one end connected to the outside; and

[0006] At least one inner conductor unit includes at least two radiating structures; the at least two radiating structures are at least partially spaced apart within the cavity and extend along the through-hole direction of the cavity.

[0007] In some embodiments, a fixing seat disposed within the cavity is further included; the fixing seat defines a receiving cavity for accommodating at least a portion of the aerosol generating article; at least a portion of the inner conductor unit is disposed within the receiving cavity, and a portion of the radiating structure is located on the outer periphery of the receiving cavity.

[0008] In some embodiments, the inner wall of the sidewall of the fixing seat is recessed outward to form a receiving groove; the at least two radiating structures include a first radiating structure and a second radiating structure; the first radiating structure is at least partially disposed within the receiving cavity; and the second radiating structure is at least partially received within the receiving groove.

[0009] In some embodiments, the at least two radiating structures further include a third radiating structure; the third radiating structure is parallel to and spaced apart from the first radiating structure and the second radiating structure, and is located outside the accommodating cavity.

[0010] In some embodiments, the third radiating structure is located along the radial direction of the fixing base on the side of the second radiating structure opposite to the first radiating structure.

[0011] In some embodiments, the at least one inner conductor unit includes a first inner conductor unit and a second inner conductor unit; the first inner conductor unit and the second inner conductor unit are arranged in parallel and spaced apart.

[0012] In some embodiments, the sidewall of the fixing base is further provided with a receiving hole through it in the thickness direction, and the receiving hole and the receiving groove are symmetrically arranged in the circumferential direction of the fixing base; the second radiating structure of the first inner conductor unit is received in the receiving groove, and the second radiating structure of the second inner conductor unit is received in the receiving hole.

[0013] In some embodiments, the first radiating structure includes a first radiating portion and a second radiating portion; the second radiating portion is disposed axially at one end of the first radiating portion near the through opening, and the cross-sectional area perpendicular to the axial direction is greater than the cross-sectional area of ​​the first radiating portion perpendicular to the axial direction.

[0014] In some embodiments, the second radiating portion includes a base portion and an extension portion; the base portion is coaxially disposed with the first radiating portion, and the extension portion is disposed alongside the base portion on the side of the second radiating structure.

[0015] In some embodiments, the axial length of the first radiating structure is greater than the axial length of the second radiating structure.

[0016] In some embodiments, the outer conductor unit defines at least one feed inlet for the microwave feed unit to feed microwaves into the inner conductor unit.

[0017] In some embodiments, the feed inlet is located radially along the cavity on the side of the second radiating structure opposite to the first radiating structure.

[0018] In some embodiments, the inner conductor unit further includes an impedance matching structure; the impedance matching structure is at least partially disposed within the cavity, and the at least two radiating structures are disposed parallel to and spaced apart on the impedance matching structure.

[0019] In some embodiments, the outer conductor unit includes a through first end and a second end opposite to the first end; the inner conductor unit further includes an electrical connection structure; the electrical connection structure is disposed on the side of the impedance matching structure away from the at least two radiating structures, and is in ohmic contact with the outer conductor unit from the second end.

[0020] An aerosol generating device is constructed, comprising the microwave heating component described in any of the foregoing embodiments.

[0021] An aerosol generation system is constructed, comprising an aerosol generation product and the microwave heating component described in any of the foregoing embodiments.

[0022] In some embodiments, the microwave heating assembly defines a receiving cavity for accommodating at least a portion of the aerosol generating article; when the aerosol generating article is received within the receiving cavity, portions of the at least two radiating structures are coaxially received within the aerosol generating article and partially located on the periphery of the aerosol generating article.

[0023] Implementing the technical solution constructed in this application has at least the following beneficial effects:

[0024] This application, by setting at least two spaced-apart radiating structures, reduces the intensified hotspots at the tips of the radiating structures, resulting in a more uniform radiating field distribution. Simultaneously, it offers a wider resonant frequency band, enabling precise control of the radiating field energy, optimizing the radiating field distribution during aerosol heating, and improving the user experience. Attached Figure Description

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

[0026] Figure 1 This is a schematic diagram of the structure of the microwave heating assembly in the first embodiment of this application;

[0027] Figure 2 yes Figure 1 The diagram shows the structure of the microwave heating assembly from another angle.

[0028] Figure 3 yes Figure 1 A schematic diagram of the longitudinal cross-sectional structure of the microwave heating assembly shown;

[0029] Figure 4 yes Figure 1 A schematic diagram of the structure of the fixed base;

[0030] Figure 5 yes Figure 1 A schematic diagram of the structure of the fixing seat from another angle;

[0031] Figure 6 yes Figure 1 A schematic diagram of the longitudinal section structure of the fixing seat in the middle;

[0032] Figure 7 yes Figure 1 A schematic diagram of the inner conductor unit in the microwave heating assembly shown;

[0033] Figure 8 yes Figure 1 The diagram shows the electric field distribution during the operation of the microwave heating assembly.

[0034] Figure 9 yes Figure 1The S11 spectrum diagram shown is shown during the operation of the microwave heating assembly.

[0035] Figure 10 This is a schematic diagram of the longitudinal cross-sectional structure of a microwave heating component in related technologies;

[0036] Figure 11 yes Figure 10 The diagram shows the electric field distribution during the operation of the microwave heating assembly.

[0037] Figure 12 yes Figure 10 The S11 spectrum diagram shown is shown during the operation of the microwave heating assembly.

[0038] Figure 13 This application includes one embodiment of the application. Figure 1 A schematic diagram of the aerosol generation system of the microwave heating component shown.

[0039] Figure 14 yes Figure 13 The diagram shows a longitudinal cross-sectional view of the aerosol generation system.

[0040] Figure 15 This is a schematic diagram of the structure of the inner conductor unit in the microwave heating assembly in the second embodiment of this application;

[0041] Figure 16 This application includes one embodiment of the application. Figure 15 A schematic diagram of the longitudinal cross-sectional structure of the aerosol generation system of the inner conductor unit shown.

[0042] Figure 17 This is a longitudinal cross-sectional structural diagram of the microwave heating assembly in the third embodiment of this application;

[0043] Figure 18 yes Figure 17 A schematic diagram of the structure of the inner conductor unit in the diagram;

[0044] Figure 19 This application includes one embodiment of the application. Figure 17 A schematic diagram of the longitudinal cross-sectional structure of the aerosol generation system of the microwave heating component shown.

[0045] Figure 20 This is a schematic diagram of the structure of the microwave heating assembly in the fourth embodiment of this application;

[0046] Figure 21 yes Figure 20 A schematic diagram of the longitudinal cross-sectional structure of the microwave heating assembly shown;

[0047] Figure 22 yes Figure 20 A schematic diagram of the structure of the fixed base;

[0048] Figure 23 yes Figure 20 A schematic diagram of the structure of the fixing seat from another angle;

[0049] Figure 24 yes Figure 20 A schematic diagram of the inner conductor unit in the microwave heating assembly shown;

[0050] Figure 25 This application includes one embodiment of the application. Figure 20 A schematic diagram of the longitudinal cross-sectional structure of the aerosol generation system of the microwave heating component shown.

[0051] Figure 26 This is a schematic diagram of the structure of the microwave heating assembly in the fifth embodiment of this application;

[0052] Figure 27 yes Figure 26 A schematic diagram of the longitudinal cross-sectional structure of the microwave heating assembly shown;

[0053] Figure 28 yes Figure 27 A schematic diagram of the structure of the inner conductor unit in the diagram;

[0054] Figure 29 It shows Figure 26 The diagram shows the electric field distribution of the microwave heating component when fed with microwaves of 1 / 4λ wavelength.

[0055] Figure 30 This is a longitudinal cross-sectional structural diagram of the microwave heating assembly in the sixth embodiment of this application;

[0056] Figure 31 yes Figure 30 The diagram shows the electric field distribution during the operation of the microwave heating assembly. Detailed Implementation

[0057] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific embodiments of this application are now described in detail with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0058] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "up", "down", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] Figures 1 to 7 The microwave heating assembly 1 in the first embodiment of this application is shown. It can generate a radiation field through microwaves fed by microwave feeding unit 2 to heat the aerosol generation product 3 in a non-combustible state, so that it generates aerosol for user use.

[0063] It is necessary to understand that, such as Figure 13 and Figure 14As shown, the aerosol generating article 3 can be cylindrical and has a solid matrix for user-generated aerosols. The solid matrix can be composed of a substrate made of filaments, granules, or flakes made from plant leaves, flowers, and / or stems. Fragrance components can also be added to the solid matrix to enhance the user experience.

[0064] Of course, the aerosol-generating product 3 may also contain a liquid or paste-like matrix. The aerosol-generating product 3 may also take the form of other shapes such as elliptical columnar, polygonal columnar, irregular columnar, flat sheet, polygonal, etc., without specific limitations.

[0065] The microwave heating assembly 1 may include an outer conductor unit 10, a mounting base 30, and at least one inner conductor unit 20. The outer conductor unit 10 defines a cavity 13 with one end communicating with the outside, for housing at least a portion of the inner conductor unit 20 and at least a portion of the mounting base 30. The mounting base 30 is disposed within the cavity 13 and defines a receiving cavity 33, which can accommodate at least a portion of the aerosol generating article 3. The inner conductor unit 20 is in ohmic contact with the outer conductor unit 10 and extends partially into the receiving cavity 33. Microwaves are fed into the receiving cavity 33 via a microwave feed unit 2, forming a radiation field. When the aerosol generating article 3 is assembled into the receiving cavity 33, it is exposed to the radiation field, absorbing microwaves and generating heat through molecular motion, causing the aerosol generating article to volatilize corresponding substances to generate aerosol for user use.

[0066] like Figures 1 to 3 As shown, in some embodiments, the outer conductor unit 10 is generally hollow and cylindrical. Specifically, it can be various cylindrical structures such as cylindrical, elliptical, polygonal, and irregular. Now, it is defined that if it includes a first end 101 and a second end 102 along its axial direction, then its first end 101 is through. See also... Figure 14 The first end of the outer conductor unit 10 has a through port 130. The cavity 13 can be connected to the outside through the through port 130 of the first end 101 so that the aerosol generating product 3 can be assembled into the accommodating cavity 33 located in the cavity 13 through the first end 101.

[0067] Furthermore, such as Figure 3 As shown, the outer conductor unit 10 may include a first sidewall 11 and a first bottom wall 12, which together define a cavity 13. The first sidewall 11 is tubular with both ends open, and the first bottom wall 12 is disposed at one end of the first sidewall 11 to close the open end, forming a second end 102. The end of the first sidewall 11 away from the first bottom wall 12 forms the first end 101 of the outer conductor unit 10, forming a through opening 130.

[0068] The first sidewall 11 defines at least one feed inlet 111. The feed inlet 111 connects the cavity 13 to the outside and allows the microwave feed unit 2 to pass through it so as to make ohmic contact with the inner conductor unit 20 located inside the cavity 13, so as to feed microwaves into the inner conductor unit 20.

[0069] It should be understood that the outer conductor unit 10 can be made of metallic materials or other highly thermally conductive materials. For example, the outer conductor unit 10 can be made of gold, silver, copper, aluminum, iron, gold-containing alloys, aluminum-containing alloys, copper-containing alloys, iron-containing alloys, stainless steel, etc. Of course, the outer conductor unit 10 can also be made of a non-metallic substrate and a highly thermally conductive coating applied to the inner surface of the substrate; this highly thermally conductive metal coating can be a silver or gold coating, etc.

[0070] like Figures 4 to 6 As shown, the fixing base 30 is generally hollow and cylindrical, disposed within the cavity 13, with its axis parallel to the axis of the outer conductor unit 10. Specifically, it can be various cylindrical structures such as cylindrical, elliptical, polygonal, or irregular. One end has an opening 34, which is also shown in the reference section. Figure 1 The end of the opening 34 corresponds to the first end 101 of the outer conductor unit 10, so that the aerosol generating article 3 can be assembled into the receiving cavity 33 at least partially through the through end.

[0071] The mounting base 30 is designed to collect condensate and stains generated during the atomization process of the aerosol-generating product 3, facilitating centralized cleaning by the user. Simultaneously, it effectively prevents the leakage of e-liquid, condensate, etc., into the outer conductor unit 10, thus preventing contamination of other electronic components.

[0072] Specifically, the mounting base 30 may include a second sidewall 31 and a second sidewall 32, which together define a receiving cavity 33. The second sidewall 31 is generally tubular with both ends open, and a second bottom wall 32 is disposed at one end of the second sidewall 31 to close the open end. The end of the second sidewall 31 away from the second bottom wall 32 defines an opening 34 for assembling the aerosol-generating article 3.

[0073] The accommodating cavity 33 can be coaxially arranged with the cavity 13 so that when the aerosol generating product 3 is assembled into the accommodating cavity 33, the aerosol generating product 3 is coaxially arranged with the two chambers respectively.

[0074] It should be understood that the shape of the accommodating cavity 33 can be adapted to the aerosol-generating article 3, for example, in Figure 4 and Figure 5In the illustrated embodiment, the accommodating cavity 33 is a cylindrical cavity to limit the cylindrical aerosol generating article 3. Of course, the shape of the accommodating cavity 33 can also be different from that of the aerosol generating article 3. For example, if the aerosol generating article 3 is cylindrical, the accommodating cavity 33 could be a polygonal cylindrical space that can externally circumferentially cut off the cylindrical shape. No specific limitation is made here.

[0075] like Figure 5 and Figure 6 As shown, in some embodiments, the inner wall of the fixing base 30 is recessed outward to form at least one air guide groove 311 communicating with the receiving cavity 33. The air guide groove 311 extends axially along the fixing base 30 and extends through the opening 34. See also... Figure 13 and Figure 14 When the aerosol generating product 3 is assembled into the accommodating cavity 33, the air guide groove 311 and the side wall of the aerosol generating product 3 together define an air inlet channel. This air inlet channel can be connected to the outside through the through end at the opening 34. During the user's suction process, outside air can enter the air guide groove 311 through the opening 34, and then enter the aerosol generating product 3, where it mixes with the atomized aerosol generated inside the aerosol generating product 3 and is then carried out for the user's use. This effectively reduces suction resistance and lowers the temperature of the aerosol inhaled by the user, improving the user's suction experience.

[0076] Specifically, the air guide groove 311 can be a straight groove, or it can be an arc groove, spiral groove, wavy groove, irregular groove, or other shapes, extending on the inner wall of the fixing base 30. When there are multiple air guide grooves 311, they can be evenly or non-evenly spaced along the circumference of the fixing base 30.

[0077] In some embodiments, the inner wall surface of the second sidewall 31 is further recessed outwardly with at least one receiving groove 312 communicating with the receiving cavity 33. The receiving groove 312 extends along the axial direction of the fixing seat 30 and is used to receive the second radiating structure 22 in the inner conductor unit 20.

[0078] Specifically, such as Figure 5 As shown, the receiving groove 312 is located on the groove wall of the air guide groove 311 and is formed by recessing outward from the groove wall of the air guide groove 311. The axial extension length of the receiving groove 312 is adapted to the axial length of the second radial structure 22 within the receiving cavity 33. Correspondingly, the second sidewall 31 protrudes outward at the position corresponding to the receiving groove 312 to avoid the wall thickness of the second sidewall 31 being too thin at each position, thereby ensuring the structural strength of the fixing base 30.

[0079] See also Figure 4The second bottom wall 32 also has at least one through hole along the thickness direction for inserting the inner conductor unit 20. The radiating structure of the inner conductor unit 20 (the collective term for the first radiating structure 21 and the second radiating structure 22) can extend into the fixing base 30 through the through hole, and at least one radiating structure is received in the receiving groove 312.

[0080] Of course, in some other embodiments, when the wall thickness of the second sidewall 31 is greater than the radial dimension of the second radial structure 22, the outer contour of the second sidewall 31 can also be smoothly set, and no outward protruding structure is provided at the position corresponding to the receiving groove 312. The receiving groove 312 is defined by directly recessing the inner wall surface outward to form a groove.

[0081] In some other embodiments, the receiving groove 312 may also be spaced apart from the air guide groove 311.

[0082] It should be understood that the mounting base 30 can be made of high-temperature resistant materials with low dielectric loss, such as polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), quartz, alumina, zirconium oxide, and various composite wave-transmitting materials, without any specific limitations.

[0083] like Figure 3 and Figure 7 As shown, in some embodiments, the inner conductor unit 20 includes a first radiating structure 21, a second radiating structure 22, an impedance matching structure 23, and an electrical connection structure 24. The first radiating structure 21 and the second radiating structure 22 are longitudinally elongated and parallel to each other on the impedance matching structure 23, forming a generally U-shaped hairpin structure together. At least a portion of the first radiating structure 21 and at least a portion of the second radiating structure 22 are located within the mounting base 30, extending parallel to the axial direction of the mounting base 30. This is used to radiate microwaves to form a radiation field. The impedance matching structure 23 is disposed between the first radiating structure 21, the second radiating structure 22, and the electrical connection structure 24, and is also electrically connected to the microwave feed unit 2 to ensure impedance matching. The electrical connection structure 24 has an ohmic structure with the outer conductor unit 10 to form an electrical connection, facilitating the formation of a radiation field by feeding in microwaves.

[0084] Among them, one of the first radiating structure 21 and the second radiating structure 22 may be located inside the accommodating cavity 33, and the other one may be located on the outer periphery of the accommodating cavity 33.

[0085] Specifically, please refer to the following: Figure 2 The second radiating structure 22 is located within the receiving groove 312, and the first radiating structure 21 extends parallel to its axis within the receiving cavity 33, spaced apart from the second sidewall 31. See also... Figure 14When the aerosol generating article 3 is assembled into the accommodating cavity 33, at least part of the first radiating structure 21 is inserted into the aerosol generating article 3, while the second radiating structure 22 is located outside the aerosol generating article 3.

[0086] Furthermore, the extension position of the first radiating structure 21 within the accommodating cavity 33 can be approximately located on the axis of the accommodating cavity 33, so that when the aerosol generating article 3 is assembled into the accommodating cavity 33, the first radiating structure 21 can be inserted at its center position along the axis of the aerosol generating article 3 to provide a more uniform heating effect.

[0087] like Figure 8 As shown, this application provides two parallel-spaced radiating structures for the inner conductor unit 20, compared to Figure 11 The inner conductor unit shown has only a single radiating structure, which can significantly reduce the strengthening hot spot of the radiation field at the tip of the radiating structure. The radiation field is more distributed between the first radiating structure 21 and the second radiating structure 22, and the distribution is relatively uniform.

[0088] See also Figure 10 It is important to understand that the 1 / 4λ wavelength coaxial resonant cavity design in related technologies has a smaller resonant range when the resonant cavity is far away, requiring high frequency matching during heating. In applications with short-duration high-temperature rises, this configuration causes the equivalent impedance and optimal resonant frequency to shift as the dielectric constant of the load (the heated aerosol-generated product 3) changes with temperature. Related technologies struggle to adjust the feed microwave frequency in a timely manner to match load changes, leading to an increase in the reflection coefficient (S11) and consequently reduced transmission efficiency.

[0089] The inner conductor unit 20 structure constructed in this application, by setting a first radiating structure 21 and a second radiating structure 22 with parallel spacing, can broaden the resonance range, enabling the radiation field to maintain a low reflection coefficient (S11) over a wider frequency range, reducing dependence on a single frequency. Even if the dielectric constant of the load changes with temperature, causing a frequency shift, it can maintain high energy transfer efficiency, avoiding reflection problems caused by frequency delay, thereby ensuring heating efficiency of the aerosol-generated product 3, and simplifying system complexity and cost.

[0090] Specifically, according to Figure 9 and Figure 12 It can be seen that the microwave heating component 1A constructed in this embodiment has an S11 parameter (input return loss parameter) of less than -10dB within a frequency bandwidth of approximately 2380MHz to 2470MHz. In contrast, the coaxial resonant structure in related technologies has an S11 parameter of less than -10dB only within a frequency bandwidth of 2410MHz to 2470MHz, and its overall resonance is weaker.

[0091] It should be understood that the heating of aerosol-generated product 3 in the relevant technologies all require a certain preheating time, resulting in a long waiting time for users and a poor user experience.

[0092] This application, by setting up a first radiating structure 21 and a second radiating structure 22 with parallel spacing, can concentrate microwave energy more effectively within the region between the first radiating structure 21 and the second radiating structure 22, thereby achieving precise energy control. In other words, this arrangement enables highly concentrated localized heating, shortens preheating time, reduces user waiting time, and improves the user experience.

[0093] In some other embodiments, the first radiating structure 21 and the second radiating structure 22 may also be configured to be non-parallel and spaced apart. That is, there is a certain angle between the extending directions of the first radiating structure 21 and the second radiating structure 22.

[0094] In some other embodiments, the first radiating structure 21 and / or the second radiating structure 22 may extend in a direction other than the axial direction of the cavity 13. For example, in some embodiments, when the through end of the cavity 13 is located on the side wall of the outer conductor unit 10, the first radiating structure 21 and the second radiating structure 22 may also extend along the through opening 130 of the cavity 13.

[0095] It should be understood that the first radiating structure 21 and the second radiating structure 22 extend along the through-hole 130 of the cavity 13. This can be understood as the extension direction of the first radiating structure 21 and the second radiating structure 22 being parallel to the axial extension direction of the through-hole 130, so that when the aerosol generating product 3 is assembled into the microwave heating assembly 1 through the through-hole 130, the first radiating structure 21 and the second radiating structure 22 can follow the assembly action and be inserted into the aerosol generating product 3.

[0096] Specifically, in Figure 3 In the illustrated embodiment, the through-hole 130 is located at the first end 101 and is coaxially arranged with the cavity 13. Therefore, in this embodiment, the first radiating structure 21 and the second radiating structure 22 extend along the through-hole 130 of the cavity 13, that is, the first radiating structure 21 and the second radiating structure 22 extend along the axial direction of the cavity 13.

[0097] For example Figure 7 As shown, in some embodiments, the first radiating structure 21A includes a first radiating portion 211 and a second radiating portion 212 connected end-to-end along its length. The second radiating portion 212 is located at the end of the first radiating portion 211 furthest from the impedance matching structure 23. See also... Figure 2 and Figure 3The cross-sectional area of ​​the second radiating part 212 perpendicular to the axial direction is greater than the cross-sectional area of ​​the first radiating part 211 perpendicular to the axial direction.

[0098] By setting the second radiating part 212 and the first radiating part 211 to have different areas perpendicular to the axial direction, the radiation field in the corresponding area can be strengthened, thereby further improving the utilization rate of radiation energy.

[0099] Furthermore, the first radiating portion 211 is generally longitudinally elongated cylindrical, and the second radiating portion 212 includes a base portion 2121 and an extension portion 2122 connected to each other along a direction perpendicular to its length. The base portion 2121 and the extension portion 2122 are arranged side by side in a longitudinally elongated manner, and are respectively arranged parallel to the second radiating structure 22. The base portion 2121 is generally cylindrical and coaxially arranged with the first radiating portion 211. The extension portion 2122 is located side by side with the base portion 2121 on the side closer to the second radiating structure 22, that is, it extends from the base portion 2121 in a direction closer to the second radiating structure 22.

[0100] like Figure 2 As shown, the dimension of the extension portion 2122 perpendicular to the extension direction can gradually decrease from the end connected to the base portion 2121 to the end near the second radial structure 22, so that the cross section of the extension portion 2122 perpendicular to the length direction is approximately tapered at the tip.

[0101] In other embodiments, the cross-section of the extension portion 2122 along the direction perpendicular to its length can also be teardrop-shaped, circular, semi-circular, elliptical, semi-elliptical, polygonal, irregular, or other shapes. The extension portion 2122 can also be configured with different shapes at different positions along its length. For example, it can be wavy, arc-shaped, bent, or irregular in shape along its length, or it can be spirally wound around the base portion 2121 along its length.

[0102] In some other embodiments, the first radiating structure 21 may also include only the first radiating portion 211 and the base portion 2121. The specific shapes of the first radiating portion 211 and the base portion 2121 may also be set as other shapes such as elongated elliptical columnar, polygonal columnar, irregular columnar, flat sheet, etc.

[0103] For example Figure 7 As shown, the specific shape of the second radiating structure 22 is roughly similar to the first radiating part 211 and the base part 2121 of the first radiating structure 21, and is arranged in a longitudinal cylindrical shape. The shape of the receiving groove 312 can be adapted to the shape of the second radiating structure 22 to improve the receiving stability of the second radiating structure 22.

[0104] Of course, the shape of the second radiating structure 22 is not limited to a cylindrical shape; it can also be set as an elliptical cylindrical shape, a polygonal cylindrical shape, an irregular cylindrical shape, a flat sheet shape, or other shapes. The shape of the second radiating structure 22 can also differ from the shapes of the first radiating portion 211 and the base portion 2121 of the first radiating structure 21. For example, when the first radiating portion 211 and the base portion 2121 of the first radiating structure 21 are cylindrical, the second radiating structure 22 is a rectangular cylindrical shape.

[0105] In some other embodiments, the second radiating structure 22 may also be provided with an extension portion 2122, which may be provided on the side of the second radiating structure 22 close to the first radiating structure 21, etc.

[0106] like Figure 2 As shown, in some embodiments, the depth of the air guide groove 311 and the receiving groove 312 is such that when the inner conductor unit 20 is assembled onto the fixing base 30, the second radial structure 22 slightly protrudes radially into the receiving cavity 33. See also... Figure 14 When the aerosol generating product 3 is assembled into the accommodating cavity 33, one side of the second radiating structure 22 can be interference-fitted with the aerosol generating product 3.

[0107] In some other embodiments, the depth of the receiving groove 312 and / or the gas guiding groove 311 is such that the second radiating structure 22 is completely received within the receiving groove 312, or completely received within both the receiving groove 312 and the gas guiding groove 311. When the aerosol generating article 3 is assembled into the receiving cavity 33, one side of the second radiating structure 22 may be tangential to one side of the aerosol generating article 3, or spaced apart.

[0108] like Figure 4 As shown, in some embodiments, the second bottom wall 32 of the fixing base 30 defines two through holes, which are now defined as the first through hole 321 and the second through hole 322. The first through hole 321 connects the receiving cavity 33 to the outside, allowing the first radiating structure 21 to extend into the receiving cavity 33 through the first through hole 321. The second through hole 322 is correspondingly provided with the receiving groove 312, allowing the second radiating structure 22 to extend into the receiving groove 312 through the second through hole 322.

[0109] It should be understood that the shapes of the first through hole 321 and the second through hole 322 can be adapted to the first radiating structure 21 and the second radiating structure 22 respectively, so as to improve the assembly stability between the fixing base 30 and the inner conductor unit 20.

[0110] In some other embodiments, the number of the through hole may also be set to one, and the first radiating structure 21 and the second radiating structure 22 are extended into the accommodating cavity 33 by passing the impedance matching structure 23 through the through hole.

[0111] like Figure 3 As shown, in some embodiments, the axial length of the first radiating structure 21 is greater than the axial length of the second radiating structure 22.

[0112] This configuration allows for heating at different locations along the axial direction of the aerosol-generated product 3, further improving heating uniformity. Furthermore, it avoids the situation where the radiation field at the free end of the radiating structure, far from the impedance matching structure 23, is stronger, while the radiation field at the connection end connected to the impedance matching structure 23 is weaker. This prevents significant carbonization or scorching at the free end of the aerosol-generated product 3 during heating, while the carbonization effect at the connection end is weaker.

[0113] This setup also avoids the problem of uneven heating in aerosol-generated product 3, which results in a strong aroma and satisfaction in the initial stage, but a rapid decline in satisfaction, aroma, and aerosol volume in the later stages of smoking. It increases the total number of puffs per cigarette while ensuring no significant decline in aerosol output speed, overall satisfaction, aerosol aroma, and aerosol output volume, thereby improving the user experience.

[0114] This configuration also enhances the traction effect of the radiation field, causing it to be drawn towards the center and the upper part away from the first through-hole 321 and the second through-hole 322, thus optimizing the radiation field distribution. Furthermore, this increases the aerosol output of the aerosol-generated product 3, further improving the user experience.

[0115] In some other embodiments, the axial length of the first radiating structure 21 may also be less than or equal to the axial length of the second radiating structure 22.

[0116] like Figure 7 As shown, in some embodiments, the impedance matching structure 24 includes a base 231, a first support 232, and a second support 233. The base 231 is connected to the electrical connection structure 24. The first support 232 and the second support 233 are spaced apart on the base 231. The first support 232 supports the first radiating structure 21, and the second support 233 supports the second radiating structure 22.

[0117] Specifically, the base 231 is generally arranged in a longitudinally elongated block shape. The first support portion 232, the second support portion 233, and the electrical connection structure 24 are located on opposite sides of the base 231. The electrical connection structure 24 is generally located at one end of the corresponding side of the base 231, and the second support portion 233 is located at the end of its corresponding side away from the electrical connection structure 24. The first support portion 232 and the second support portion 233 are arranged parallel to each other and spaced apart, and are generally located at the midpoint of the base 231 along its length.

[0118] See also Figure 3 This arrangement allows the end of the first support portion 232 away from the base 231 to abut against the second bottom wall 32 around the first through hole 321 after the inner conductor unit 20 is assembled to the fixing base 30, and the end of the second support portion 233 away from the base 231 to abut against the second bottom wall 32 around the second through hole 322, so as to provide support and limit the position along the axial direction of the fixing base 30.

[0119] In other embodiments, the structure of the base 231, the structure of the first support 232 and the second support 233, and the relative positional relationship of the first support 232 and the second support 233 on the base 231 can be flexibly adjusted according to the impedance matching requirements. For example, the base 231 can also be configured as a cylindrical, polygonal columnar, disc-shaped, hemispherical, irregular, or other shapes. There are many potential embodiments, which will not be listed one by one here.

[0120] In some embodiments, the feed inlet 111 is positioned on the first sidewall 11 such that its axial position on the outer conductor unit 10 corresponds approximately to the first support portion 232 and the second support portion 233, while its radial position on the outer conductor unit 10 is approximately located on the side of the second radiating structure 22 opposite to the first radiating structure 21. The microwave feed unit 2 can extend through the feed inlet 111 to the second support portion 233 and make ohmic contact with it to feed microwaves.

[0121] This configuration facilitates ohmic contact between the microwave feed unit 2 and the inner conductor unit 20, reduces the extension of the microwave feed unit 2 within the outer conductor unit 10, and simplifies its assembly with the microwave heating assembly 1.

[0122] In some other embodiments, the feed inlet 111 may also be located at other positions on the first sidewall 11. The microwave feed unit 2 may also be in ohmic contact with other parts of the inner conductor unit 20, such as the first support 232, the base 231, or the electrical connection structure 24.

[0123] like Figure 3 As shown, in some embodiments, a connection port 121 extends through the first bottom wall 12 of the outer conductor unit 10 along the thickness direction. The electrical connection structure 24 is generally plate-shaped and fills the connection port 121 to seal the connection port 121 while achieving ohmic contact with the outer conductor unit 10.

[0124] By making the electrical connection structure 24 ohms contact with the first bottom wall 12, it is also convenient to assemble the mounting base 30 within the outer conductor unit 10. (Continue reading) Figure 3When the electrical connection structure 24 is assembled into the connection port 121, the impedance matching structure 23 is supported and limited by the electrical connection structure 24 at one end along the axial direction, and the other end abuts against the fixed seat 30, thereby realizing the limitation of the fixed seat 30 along the axial direction in the cavity 13.

[0125] The shape of the electrical connection structure 24 can be flexibly adjusted according to the structure of the base 231 and the connection port 121 on the outer conductor unit 10. Specifically, it can be set to various shapes such as plate, block, column, and irregular shape.

[0126] In some other embodiments, the connection port 121 of the outer conductor unit 10 may also be provided on the first sidewall 11. In this embodiment, the electrical connection structure 24 may also be correspondingly provided on one side of the base 231, and its side side is adjacent to the side side where the first support 232 and the second support 233 are located.

[0127] In some other embodiments, the connection port 121 may also be provided in the form of a groove that does not penetrate the wall thickness of the outer conductor unit 10, and the assembly and ohmic contact of the two are achieved by accommodating the electrical connection structure 24 in the groove.

[0128] It should be understood that the inner conductor unit 20 can be made of metal. For example, it can be made of aluminum alloy, copper, or other metal materials. Alternatively, the inner conductor unit 20 can also be made of a non-metallic substrate and a high thermal conductivity coating applied to the inner surface of the substrate. This high thermal conductivity metal coating can be silver or gold, etc. No specific limitation is made here.

[0129] The radiation structure, impedance matching structure 23, and electrical connection structure 24 of the inner conductor unit 20 can be assembled together through various detachable or non-detachable connection methods such as integral molding, welding, threaded connection, and bolt connection, without any specific limitations.

[0130] Figure 15 The inner conductor unit 20A in the microwave heating assembly of the second embodiment of this application is shown. The main difference between it and the microwave heating assembly 1 in the first embodiment is that the specific shape of the first radiation structure 21A in this embodiment is different from the shape of the first radiation structure 21 in the first embodiment.

[0131] In this embodiment, the first radiating structure 21A does not have an extension portion. Figure 15 (Not shown in the image), its overall shape is roughly a long cylindrical shape, similar to the shape of the second radial structure 22A.

[0132] Figure 17 and Figure 18The microwave heating component 1B in the third embodiment of this application is shown. The main difference between it and the microwave heating component 1 in the first embodiment is that in this embodiment, the number of radiation structures is three, and a third radiation structure 25B is also included.

[0133] The accommodating cavity 33B is arranged parallel to and spaced apart from the axis of the cavity 13B. The third radiating structure 25B is parallel to and spaced apart from the first radiating structure 21B and the second radiating structure 22B. The third radiating structure 25B is located outside the fixing base 30B and along the radial direction of the fixing base 30B, on the side of the second radiating structure 22B opposite to the first radiating structure 21B.

[0134] Specifically, the third radiating structure 25B is roughly in the shape of a long rectangular column, and its axial length is slightly greater than that of the second radiating structure 22B. At the same time, the axial length of the second radiating structure 22B is also slightly greater than that of the first radiating structure 21B.

[0135] This setup allows for targeted adjustments to the radiation field distribution of the microwave heating component 1B based on the different heating requirements of the aerosol-generated product 3, thereby improving the heating effect.

[0136] In some embodiments, along the length of the base 231B, the first support portion 232B is located approximately at one end of the base 231B, and the third radiating structure 25B is directly disposed at the end of the base 231B away from the first support portion 232B. The second support portion 233B is spaced between the third radiating structure 25B and the first support portion 232B.

[0137] Of course, based on the requirements of impedance matching, the impedance matching structure 23B can also be flexibly adjusted in its specific shape, such as setting a third support part to support the third radiation structure 25B, etc.

[0138] Furthermore, such as Figure 17 As shown, in this embodiment, the feed inlet 111B of the outer conductor unit 10B is located approximately on the side of the third radiating structure 25B away from the first radiating structure 21B and the second radiating structure 22B, so that the microwave feed unit 2B makes ohmic contact with the third radiating structure 25B from the feed inlet 111B, thereby feeding microwaves into the inner conductor unit 20B.

[0139] Figures 20 to 24 The microwave heating assembly 1C of the fourth embodiment of this application is shown. The main difference between it and the microwave heating assembly 1 of the first embodiment is that, in this embodiment, there are two inner conductor units 20C. These are now defined as the first inner conductor unit 201C and the second inner conductor unit 202C, respectively.

[0140] Specifically, the first inner conductor unit 201C and the second inner conductor unit 202C are arranged radially parallel and spaced apart within the cavity 13C, and are arranged symmetrically along the axis of the accommodating cavity 33C.

[0141] like Figure 22 As shown, in this embodiment, the second bottom wall 32C has three through holes, and the third through hole is defined as the third through hole 323C. The first through hole 321C and the second through hole 322C are used to pass through the first radiating structure 21C and the second radiating structure 22C of the first inner conductor unit 101C, respectively. The third through hole 323C is symmetrically arranged with respect to the first through hole 321C about the axis of the accommodating cavity 33C, and is used to pass through the first radiating structure 21C of the second inner conductor unit 202C.

[0142] See also Figure 23 In some embodiments, a receiving hole 313C is further provided through the second sidewall 31C of the fixing base 30C. The receiving hole 313C is symmetrically arranged with the receiving groove 312C along the circumference of the fixing base 30C. It extends axially along the fixing base 30C, and its end near the second bottom wall 32C penetrates the second bottom wall 32C, so that the second radiating structure 22C of the second inner conductor unit 202C extends from the penetrating end into the receiving hole 313C. The axial length of the receiving hole 313C can be adapted to the length of the second radiating structure 22C of the second inner conductor unit 202C.

[0143] Of course, in some other embodiments, the receiving hole 313C of the fixing base 30C may also be configured as a receiving groove 312C, and a fourth through hole may also be provided on the second bottom wall 32C at a position symmetrical to the second through hole 322C. The second radiation structure 22C of the second inner conductor unit 202C is received in the receiving groove 312C through the fourth through hole.

[0144] like Figure 20 and Figure 21 As shown, in some embodiments, two feed inlets 111C are formed on the outer conductor unit 10C, and microwave feeds are performed on the first inner conductor unit 201C and the second inner conductor unit 202C respectively by setting two microwave feed units 2C.

[0145] like Figure 21 and Figure 24 As shown, the impedance matching structure 23C of the inner conductor unit 20C can be arranged in a roughly columnar shape. Its first support portion 232C and second support portion 233C are respectively located at one end of the base 231C away from the electrical connection structure 24C, and are symmetrically arranged on both sides of that end of the base 231C.

[0146] Furthermore, the electrical connection structures 24C of the first inner conductor unit 201C and the second inner conductor unit 202C are arranged radially symmetrically within the outer conductor unit 10C. Two feed inlets 111C are symmetrically arranged on the outer conductor unit 10C to make ohmic contact with the second support portion 233C of the first inner conductor unit 201C and the second support portion 233C of the second inner conductor unit 202C, respectively.

[0147] In some other embodiments, the two feed inlets 111C may also be disposed on the same side of the outer conductor unit 10C and spaced apart, so as to make ohmic contact with the impedance matching structure 23C of the first inner conductor unit 201C and the impedance matching structure 23C of the second inner conductor unit 202C, respectively.

[0148] In some other embodiments, the number of inner conductor units 20C may also be three, four, or other plurality of units. They may be evenly or non-uniformly spaced along the circumference within the cavity 13C.

[0149] Figures 26 to 28 The microwave heating assembly 1D of the fifth embodiment of this application is shown. The main difference between it and the microwave heating assembly 1D of the first embodiment is that, in this embodiment, the first radiating structure 21D and the second radiating structure 22D of the microwave heating assembly 1D have the same length along the axial direction.

[0150] Furthermore, such as Figure 27 and Figure 28 As shown, in this embodiment, the impedance matching structure 23D includes only a base 231D. The base 231D is generally n-shaped or an inverted U-shape, including two parallel, spaced vertical sections and a horizontal section vertically connected to one end of each of the two vertical sections. One of the vertical sections, away from the horizontal section, is connected to an electrical connection structure 24D, while the other vertical section is suspended. The first radiating structure 21D and the second radiating structure 22D are arranged parallel to each other on the horizontal section.

[0151] like Figure 26 and Figure 27 As shown, in this embodiment, the feed inlet 111D on the outer conductor unit 10D is located on one side of the base 231D and is generally connected to the horizontal portion of the base 231D.

[0152] Figure 30 The microwave heating component 1E of the sixth embodiment of this application is shown. The main difference between it and the microwave heating component 1 in the first embodiment is that, in this embodiment, the inner conductor unit 20E of the microwave heating component 1E does not include an impedance matching structure.

[0153] Specifically, the inner conductor unit 20E includes a first radiating structure 21E, a second radiating structure 22E, and two electrical connection structures 25E. The outer conductor unit 10E has two correspondingly spaced connection ports 121E, and the two electrical connection structures 25E are respectively disposed within the two connection ports 121E. The ends of the first radiating structure 21E and the second radiating structure 22E furthest from the first end 101E are respectively disposed on the two electrical connection structures 25E to achieve positioning within the cavity 13E.

[0154] Furthermore, in some embodiments, the outer peripheral contour of the fixing seat 30E is adapted to the inner peripheral contour of the cavity 13E, so that the outer wall of the fixing seat 30E fits against the inner cavity wall of the cavity 13E, or there is a small gap.

[0155] Figure 31 The diagram shows the electric field distribution of the microwave heating component 1E during operation in this embodiment. As can be seen from the diagram, even without an impedance matching structure, the microwave heating component 1E can reduce the enhanced hot spots at the tip of the radiation structure, making the radiation field distribution relatively more uniform.

[0156] It should be understood that the microwave resonant frequency required for the operation of the microwave heating assembly constructed in the foregoing embodiments of this application is mainly determined by the structure of the inner conductor unit and the dielectric constant of the aerosol-generated product. Without considering the aerosol-generated product, the heating effect of the microwave heating assembly constructed in the foregoing embodiments of this application is mainly determined by the structure of the inner conductor unit. For example, impedance matching structures, the length and shape of each radiating structure, and the gap between two radiating structures can collectively enable the microwave heating assembly to have a wider bandwidth response, while optimizing the radiation field distribution and reducing end hotspots.

[0157] And in response to Figure 10 The related technology shown, for example, has a coaxial resonant frequency primarily dominated by the equivalent electrical length (λ / 4) of the inner conductor unit. This configuration results in a narrow bandwidth, low energy efficiency, and hot spots at the ends.

[0158] However, for the aforementioned embodiments constructed in this application, when the frequency of the fed microwave is adjusted, the microwave heating component can be made to move out of the inherent resonance range constructed in this application, and the radiation field will be redistributed to meet the new boundary conditions. For example, when a microwave frequency that matches the λ / 4 coaxial resonance field distribution mode is fed in, the radiation field constructed in this application will correspondingly switch to the coaxial resonance mode.

[0159] Taking the microwave heating module 1D constructed in the fifth embodiment as an example, when a microwave frequency matching the λ / 4 coaxial resonant field distribution mode is fed into it, its radiation field distribution is as follows: Figure 29As shown. When a microwave frequency compatible with the dual-needle resonance is fed in, the radiation field constructed in this application will switch to the dual-needle resonance mode, and its radiation field distribution will be approximately as follows. Figure 8 similar.

[0160] But on the other hand Figure 10 For example, the related technologies are limited by the structural morphology of their inner conductor units, which only support a single resonant peak and cannot achieve the radiation field morphology constructed in this application by changing the frequency of the fed microwave.

[0161] In other words, the microwave heating component constructed in this application can achieve at least two resonant modes, corresponding to two radiation fields. That is, by changing the frequency of the fed microwave or the design of the corresponding inner conductor unit structure, it can be applied to either a 1 / 4λ wavelength coaxial resonant mode or a dual-needle resonant mode. In some special cases, both modes can even coexist. In contrast, the inner conductor unit configurations constructed in related technologies are only suitable for the 1 / 4λ wavelength coaxial resonant mode and cannot achieve the radiation field configuration achievable in this application through frequency adjustment.

[0162] It is also necessary to understand that, regarding Figure 7 , Figure 15 , Figure 24 In the inner conductor unit shown in the embodiments, the setting that the axial length of the first radiating structure is greater than the axial length of the second radiating structure can lower the frequency corresponding to its 1 / 4λ wavelength coaxial resonant mode, but does not affect the frequency corresponding to the dual-needle resonant mode. That is, this setting can also facilitate the isolation of the two resonant modes and avoid problems such as incorrect radiation field construction.

[0163] This application also provides an aerosol generating device, which may include the microwave heating component 1 constructed in any of the foregoing embodiments.

[0164] It should be understood that this aerosol generating device can be applied to various fields such as beauty, health, medical, and e-cigarettes, without being specifically limited here.

[0165] In some embodiments, the aerosol generating apparatus may further include at least one microwave feed unit 2, the number of which corresponds to the number of feed inlets 111, to extend through the feed inlets 111 into the cavity 13 to make ohmic contact with the impedance matching structure 23 of the inner conductor unit 20 for feeding microwaves to the radiation mechanism.

[0166] In some embodiments, the aerosol generating apparatus may further include a microwave generating unit (not shown) that is in ohmic contact with the microwave feed unit for generating microwaves to be fed into the inner conductor unit 20 through the microwave feed unit 2.

[0167] It should be understood that the microwave feed unit 2 can be implemented using existing mechanisms such as radio frequency connectors (SMA), and the microwave generating unit is similar, so no specific limitations are made here.

[0168] This application also provides an aerosol generation system, which may include an aerosol generation article 3 and a microwave heating component constructed in any of the foregoing embodiments. The aerosol generation article 3 is detachably assembled into the receiving cavity of the microwave heating component so that it is heated by microwave radiation by the microwave heating component to generate an aerosol for user use.

[0169] like Figure 13 , Figure 14 , Figure 16 , Figure 19 , Figure 25 As shown, after the aerosol generating product 3 is assembled into the accommodating cavity, part of the radiating structure is inserted into the aerosol generating product 3, and part of the radiating structure is located on the outer periphery of the aerosol generating product 3, so that at least two radiating structures can cooperate to provide a uniform radiating field for the aerosol generating product 3.

[0170] In some embodiments, when the aerosol generating article 3 is assembled into the accommodating cavity, the relative positions of all the radiating structures are such that one radiating structure is coaxially located inside the aerosol generating article 3, while the remaining radiating structures are located on the outer periphery of the aerosol generating article 3.

[0171] This setup not only improves the uniformity of the radiation field's effect on the aerosol-generating product 3, but also facilitates the rotation of the aerosol-generating product 3 relative to the accommodating cavity, thereby achieving segmented heating of its circumference. This results in more uniform heating of the aerosol-generating product, increases the heating rate, and thus increases the mist output speed. Heating is stopped during the suction interval, enabling immediate suction and cessation of heating.

[0172] It should be understood that when the shape of the accommodating cavity defined by the fixing seat of the microwave heating component matches the shape of the aerosol generating product 3, the radiating structure can be coaxially located within the aerosol generating product 3, that is, extending along the axis of the accommodating cavity.

[0173] Of course, when the shape of the accommodating cavity defined by the fixed seat is different from the shape of the aerosol generating product 3, the radial structure can be located coaxially within the aerosol generating product 3, or it can be set parallel to the axis of the accommodating cavity.

[0174] In some other embodiments, when the number of radiating structures is at least three, at least two radiating structures may be located inside the aerosol generating article 3, and the remaining radiating structures may be located on the outer periphery of the aerosol generating article 3.

[0175] The aerosol generation system will be further described below using the microwave heating components constructed in the first, second, third, and fourth embodiments described above as examples.

[0176] Specifically, such as Figure 14 As shown, in the microwave heating assembly 1 constructed in the first embodiment described above, the first radiating structure 21 extends along the axis of the accommodating cavity 33. When the aerosol generating article 3 is assembled into the accommodating cavity 33, at least a portion of the first radiating structure 21 is coaxially inserted into the aerosol generating article 3. The second radiating structure 22 is located on the outer periphery of the aerosol generating article 3.

[0177] like Figure 16 As described above, for the microwave heating assembly 1A constructed in the second embodiment, its first radiation structure 21A extends along the accommodating cavity ( Figure 15 and Figure 16 The axis extends (not shown in the diagram). After the aerosol generating article 3 is assembled into the accommodating cavity, at least a portion of the first radiating structure 21A is coaxially inserted into the aerosol generating article 3. The second radiating structure 22A is located on the outer periphery of the aerosol generating article 3.

[0178] like Figure 17 and Figure 19 As described above, in the microwave heating assembly 1B constructed in the third embodiment, the first radiating structure 21B extends along the axis of the accommodating cavity 33B. When the aerosol generating article 3 is assembled into the accommodating cavity 33B, at least a portion of the first radiating structure 21B is coaxially inserted into the aerosol generating article 3. The second radiating structure 22B and the third radiating structure 25B are both located on the outer periphery of the aerosol generating article 3, and the third radiating structure 25B is spaced apart from the second radiating structure 22B on the side opposite to the aerosol generating article 3.

[0179] like Figure 21 and Figure 25 As shown, in the microwave heating assembly 1C constructed in the aforementioned fourth embodiment, the first radiating structure 21C of the first inner conductor unit 201C and the first radiating structure 21C of the second inner conductor unit 202C are symmetrically arranged along the axis of the accommodating cavity 22C. When the aerosol generating article 3 is assembled into the accommodating cavity 33C, the first radiating structure 21C of the first inner conductor unit 201C and the first radiating structure 21C of the second inner conductor unit 202C are symmetrically inserted into the aerosol generating article 3 along the axis of the aerosol generating article 3. The second radiating structure 22C of the first inner conductor unit 201C and the second radiating structure 22C of the second inner conductor unit 202C are both located on the outer periphery of the aerosol generating article 3, and the axis of the aerosol generating article 3 is symmetrically arranged.

[0180] Understandably, the above-mentioned technical features can be used in any combination without restriction.

[0181] The above embodiments merely illustrate specific implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application's patent. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of this application, and can also make several modifications and improvements, all of which fall within the protection scope of this application. Therefore, any equivalent transformations and modifications made within the scope of the claims of this application should be covered by the claims of this application.

Claims

1. A microwave heating assembly, characterized in that, include: The outer conductor unit defines a cavity with one end connected to the outside world; as well as At least one inner conductor unit includes at least two radiating structures; the at least two radiating structures are at least partially spaced apart within the cavity and extend along the through-hole direction of the cavity.

2. The microwave heating assembly according to claim 1, characterized in that, It also includes a fixing seat disposed within the cavity; the fixing seat defines a receiving cavity for accommodating at least a portion of the aerosol generating article; at least a portion of the inner conductor unit is disposed within the receiving cavity, and a portion of the radiating structure is located on the outer periphery of the receiving cavity.

3. The microwave heating assembly according to claim 2, characterized in that, The inner wall of the sidewall of the fixed seat is recessed outward to form a receiving groove; the at least two radiating structures include a first radiating structure and a second radiating structure; the first radiating structure is at least partially disposed within the receiving cavity; The second radiating structure is at least partially housed within the receiving slot.

4. The microwave heating assembly according to claim 3, characterized in that, The at least two radiating structures further include a third radiating structure; the third radiating structure is parallel to and spaced apart from the first radiating structure and the second radiating structure, and is located outside the accommodating cavity.

5. The microwave heating assembly according to claim 4, characterized in that, The third radiating structure is located along the radial direction of the fixed base on the side of the second radiating structure opposite to the first radiating structure.

6. The microwave heating assembly according to claim 3, characterized in that, The at least one inner conductor unit includes a first inner conductor unit and a second inner conductor unit; the first inner conductor unit and the second inner conductor unit are arranged in parallel and spaced apart.

7. The microwave heating assembly according to claim 6, characterized in that, The sidewall of the fixing base also has a receiving hole extending through it along the thickness direction. The receiving hole and the receiving groove are symmetrically arranged around the circumference of the fixing base. The second radiating structure of the first inner conductor unit is received in the receiving groove, and the second radiating structure of the second inner conductor unit is received in the receiving hole.

8. The microwave heating assembly according to claim 3, characterized in that, The first radiating structure includes a first radiating part and a second radiating part; the second radiating part is disposed axially at one end of the first radiating part near the through opening, and the cross-sectional area perpendicular to the axial direction is greater than the cross-sectional area of ​​the first radiating part perpendicular to the axial direction.

9. The microwave heating assembly according to claim 8, characterized in that, The second radiating part includes a base portion and an extension portion; the base portion is coaxially arranged with the first radiating part, and the extension portion is arranged side by side with the base portion on the side close to the second radiating structure.

10. The microwave heating assembly according to any one of claims 3 to 9, characterized in that, The axial length of the first radiating structure is greater than the axial length of the second radiating structure.

11. The microwave heating assembly according to any one of claims 3 to 9, characterized in that, The outer conductor unit defines at least one feed port for feeding microwaves from the microwave feed unit to the inner conductor unit.

12. The microwave heating assembly according to claim 11, characterized in that, The feed inlet is located radially along the cavity on the side of the second radiation structure opposite to the first radiation structure.

13. The microwave heating assembly according to any one of claims 1 to 9, characterized in that, The inner conductor unit further includes an impedance matching structure; the impedance matching structure is at least partially disposed within the cavity, and the at least two radiating structures are disposed parallel and spaced apart on the impedance matching structure.

14. The microwave heating assembly according to claim 13, characterized in that, The outer conductor unit includes a through first end and a second end opposite to the first end; the inner conductor unit further includes an electrical connection structure; the electrical connection structure is disposed on the side of the impedance matching structure away from the at least two radiating structures, and is in ohmic contact with the outer conductor unit from the second end.

15. An aerosol generating device, characterized in that, Includes the microwave heating assembly as described in any one of claims 1 to 14.

16. An aerosol generation system, characterized in that, Includes aerosol-generating articles and microwave heating components as described in any one of claims 1 to 14.

17. The aerosol generation system according to claim 16, characterized in that, The microwave heating assembly defines a receiving cavity for accommodating at least a portion of the aerosol generating article; when the aerosol generating article is received within the receiving cavity, portions of the at least two radiating structures are coaxially received within the aerosol generating article and partially located on the outer periphery of the aerosol generating article.

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