Aerosol generating apparatus

Abstract

The present invention relates to an aerosol generating apparatus, comprising: an outer conductor unit, at least comprising a first end wall, a second end wall opposite the first end wall, and an outer ring wall arranged between the first end wall and the second end wall, wherein the first end wall, the second end wall and the outer ring wall define a resonant cavity; an inner conductor, at least partially arranged in the resonant cavity, coaxially arranged with the resonant cavity, connected to the first end wall, and provided on the axial direction with a first end and a second end opposite the first end, wherein a gap is arranged between the first end and the second end wall, and the gap forms a heating area; a heating pot, at least partially arranged in the heating area, coaxially arranged with the inner conductor, and provided with a pot wall for microwave penetration, and an accommodating cavity defined by the pot wall. The heating pot is at least partially arranged in the heating area, and the heating pot can hold a paste-like aerosol generating substrate and heat the aerosol generating substrate. The application range of the aerosol generating apparatus is increased.

Description

Aerosol generating device Technical Field

[0001] The present invention relates to the field of atomization, in particular to an aerosol generating device. Background Art

[0002] In the related art, aerosol generating devices using microwave heating usually heat solid and columnar aerosol generating matrices, and are usually not suitable for pasty aerosol generating matrices. That is, the aerosol generating devices have the disadvantage of a narrow scope of application. Summary of the Invention

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

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

[0005] The outer conductor unit comprises at least a first end wall, a second end wall disposed opposite to the first end wall, and an outer annular wall disposed between the first end wall and the second end wall; the first end wall, the second end wall, and the outer annular wall define a resonant cavity;

[0006] an inner conductor, at least partially disposed in the resonant cavity and coaxially disposed with the resonant cavity, having a first end and a second end disposed opposite the first end in the axial direction, the second end being connected to the first end wall, a gap being left between the first end and the second end wall, the gap forming a heating zone;

[0007] The heating pot is at least partially arranged in the heating zone and coaxially arranged with the inner conductor. It has a pot wall for microwave penetration and a receiving cavity defined by the pot wall.

[0008] In some embodiments, the heating pot is detachably disposed in the heating zone.

[0009] In some embodiments, the inner conductor has an end surface at the first end, and the heating pot is disposed on the end surface of the first end.

[0010] In some embodiments, a receiving groove is formed at the first end; the heating pot is at least partially received in the receiving groove.

[0011] In some embodiments, a conductive pin extending toward the first end is provided in the receiving groove;

[0012] The heating pot comprises a bottom wall, the bottom wall is provided with a channel for inserting the conductive needle, and the channel is separated from the receiving cavity.

[0013] In some embodiments, a support structure is further included, wherein a first end of the inner conductor is provided with a receiving groove, one end of the support structure is disposed in the receiving groove, and the other end extends toward the first end to support the heating pot.

[0014] In some embodiments, the support structure is a thermally insulating support structure;

[0015] A heat-insulating cavity is formed between at least a portion of the support structure and an inner wall of the inner conductor.

[0016] In some embodiments, an air channel structure is further provided in the axial direction of the inner conductor, and the air channel structure is communicated with the receiving cavity of the heating pot.

[0017] In some embodiments, an air inlet channel and an air outlet channel are also included;

[0018] The heating pot includes an air inlet and an air outlet which are in communication with the receiving cavity and are staggered;

[0019] The air inlet is communicated with the air inlet channel, and the air outlet is communicated with the air outlet channel.

[0020] In some embodiments, a wave-transmitting tube is further included, wherein the wave-transmitting tube is disposed in the heating zone, is coaxially disposed with the inner conductor, and is sleeved on the outer circumference of the heating pot;

[0021] The wave-transmitting tube is at least partially inserted into the first end of the inner conductor, and a first sealing structure is provided between the wave-transmitting tube and the inner conductor;

[0022] And / or, the wave-transmitting tube is at least partially inserted into the second end wall, and a second sealing structure is provided between the wave-transmitting tube and the outer conductor unit.

[0023] The implementation of the aerosol generating device of the present invention has the following beneficial effects: the aerosol generating device is provided with a pot wall for microwave penetration and a heating pot with a receiving cavity defined by the pot wall, and the heating pot is at least partially arranged in the heating zone and coaxially arranged with the inner conductor, so that the aerosol generating matrix can be carried by the heating pot, and the aerosol generating matrix (especially a paste-like aerosol generating matrix) can be heated, thereby improving the application range of the aerosol generating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0025] FIG1 is a schematic diagram of a partial structure of an aerosol generating device in a first embodiment of the present invention;

[0026] FIG2 is a partial structural cross-sectional view of the aerosol generating device shown in FIG1 ;

[0027] FIG3 is a schematic diagram of the inner conductor structure of the aerosol generating device shown in FIG2 ;

[0028] FIG4 is a cross-sectional view of the inner conductor shown in FIG3 ;

[0029] FIG5 is a schematic structural diagram of a heating pot of the aerosol generating device shown in FIG2 ;

[0030] FIG6 is a schematic structural diagram of the airway structure in the aerosol generating device shown in FIG2 ;

[0031] FIG7 is a cross-sectional view of the airway structure shown in FIG6;

[0032] FIG8 is another cross-sectional view of the airway structure shown in FIG6;

[0033] FIG9 is a partial structural cross-sectional view of an aerosol generating device according to a second embodiment of the present invention;

[0034] FIG10 is a schematic diagram of the structure of the pot body in the heating pot of the aerosol generating device shown in FIG9;

[0035] FIG11 is a schematic diagram of the cover structure of the heating pot of the aerosol generating device shown in FIG9;

[0036] FIG12 is a partial structural cross-sectional view of an aerosol generating device according to a third embodiment of the present invention;

[0037] FIG13 is a schematic diagram of a partial structure of an aerosol generating device in a fourth embodiment of the present invention;

[0038] FIG14 is a partial structural cross-sectional view of the aerosol generating device shown in FIG13;

[0039] FIG15 is a schematic structural diagram of the heating pot of the aerosol generating device shown in FIG14;

[0040] FIG16 is a cross-sectional view of the heating pot shown in FIG15;

[0041] FIG17 is a partial structural cross-sectional view of an aerosol generating device according to a fifth embodiment of the present invention;

[0042] FIG18 is a cross-sectional view of the heating pot of the aerosol generating device shown in FIG17. DETAILED DESCRIPTION

[0043] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the terms "upper," "lower," "vertical," "horizontal," "bottom," "inner," and "outer," and other designations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are constructed and operated in specific orientations. These terms are intended solely to facilitate the description of the present technical solution and do not necessarily require the device or component to have a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0044] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0045] Figure 1 illustrates a first embodiment of an aerosol-generating device according to the present invention. The aerosol-generating device is used to heat an aerosol-generating substrate to generate an aerosol for inhalation by a user. The aerosol-generating substrate is detachably mounted on the aerosol-generating device and can generate an aerosol while heated. In some embodiments, the aerosol-generating substrate can be in the form of a paste, specifically a paste-like material made from plant leaves, flowers, and / or stems. The aerosol-generating substrate that can be heated by the aerosol-generating device according to the present invention is not limited to paste-like materials and can also be a solid or liquid material.

[0046] As shown in Figures 1 and 2, in this embodiment, the aerosol-generating device may include a housing, a microwave heating assembly 10, and a nozzle assembly 20. The housing is used to house the microwave heating assembly 10 and connect to the nozzle assembly 20. The microwave heating assembly 10 utilizes microwaves to heat an aerosol-generating substrate. The nozzle assembly 20 cooperates with the microwave heating assembly 10 to discharge aerosol generated by the aerosol-generating substrate for inhalation by a user.

[0047] In this embodiment, the microwave heating assembly 10 may include an outer conductor unit 11, an inner conductor 12, a heating pot 14, a transparent tube 15, and a support structure 16. The inner side of the outer conductor unit 11 defines a resonant cavity 13, which can be used to feed microwaves. The inner conductor 12 is at least partially disposed within the resonant cavity 13 and is coaxially arranged with the resonant cavity 13. One end of the inner conductor 12 is spaced apart from an end wall of the outer conductor unit 11, forming a heating zone 131. When microwaves are fed into the resonant cavity 13, a ring capacitance is generated between the inner conductor 12 and the resonant cavity 13 in a transverse direction, forming an alternating electric field that varies with frequency, thereby heating the aerosol-forming substrate in the heating zone 131. The heating pot 14 is disposed within the resonant cavity 13 and coaxially with the inner conductor 12. Specifically, the heating pot 14 is at least partially disposed within the heating zone 131 of the resonant cavity 13 and can be used to carry the aerosol-generating substrate. The walls of the heating pot 14 allow microwaves to penetrate, thereby enabling microwaves to heat the aerosol-generating substrate and generate aerosol. A wave-transmitting tube 15 is disposed within the heating zone 131 and can be coaxial with the inner conductor 12 and the outer conductor unit 11. It can be sleeved around the outer periphery of the heating pot 14 to isolate the heating zone 131 from the resonant cavity 13, thereby protecting the resonant cavity 13 from adhesion and condensation of the aerosol. The inner conductor 12 can be a solid cylinder, a hollow cylinder, or a partially hollow cylinder. When the inner conductor 12 has a hollow structure, a support structure 16 can be disposed within the inner conductor 12 to support the heating pot 14.

[0048] In this embodiment, the outer conductor unit 11 is made of metal or other highly conductive materials and includes an outer conductor 111 and a resonant cavity cover 112. The resonant cavity cover 112 is sleeved on the outer conductor 111 and can be detachably assembled with the outer conductor 111.

[0049] In some embodiments, the outer conductor 111 may be substantially cylindrical, specifically, the cross section of the outer conductor 111 may be substantially circular. Of course, it is understood that in other embodiments, the cross section of the outer conductor 111 is not limited to circular, and may be square or other shapes.

[0050] The outer conductor 111 has an outer annular wall 1110 . An opening 1111 is disposed at one end of the outer conductor 111 , and a first end wall 1112 is disposed at the other end. The opening 1111 is disposed opposite to the first end wall 1112 .

[0051] The resonant cavity cover 112 can be located at the opening 1111. The resonant cavity cover 112 can be connected and fixed to the outer conductor 111 by a screw structure. In some embodiments, the resonant cavity cover 112 may include a covering portion 112a and a connecting protrusion 112b that can be integrally formed; wherein the covering portion 112a can be sleeved on the outer conductor 111 and is roughly in the shape of a hollow column. The covering portion 112a includes a second end wall 1121 and an annular side wall, wherein the second end wall 1121 covers the opening 1111 and is arranged opposite to the first end wall 1112; the annular side wall is connected to the second end wall 1121 and can be located on the outer periphery of the outer conductor 111, and can be screwed to the outer conductor 111. The connecting protrusion 112b is arranged on the second end wall 1121 of the covering portion 112a, and protrudes along the axial direction of the covering portion 112a away from the resonant cavity 13, for connecting to the suction nozzle assembly 20. In some embodiments, the connecting protrusion 112b can be screwed to the nozzle assembly 20. In some embodiments, the connecting protrusion 112b can be cylindrical and have two through-holes.

[0052] As shown in Figures 3 and 4, in this embodiment, the inner conductor 12 may be cylindrical and have a roughly circular cross-section. In other embodiments, the cross-section of the inner conductor 12 is not limited to a circular shape. For example, in other embodiments, the cross-section of the inner conductor 12 may be square or elliptical. The outer diameter of the inner conductor 12 is smaller than the inner diameter of the outer conductor 111. The inner conductor 12 may be made of a metal material or other highly conductive material, such as aluminum or a copper alloy. The inner conductor 12 has a first end 12a and a second end 12b in its axial direction. The first end 12a and the second end 12b are disposed opposite each other. The second end 12b is connected to the first end wall 1112. The second end 12b may extend through the first end wall 1112 of the outer conductor 111 or abut against the first end wall 1112, but electrical continuity between the second end 12b and the first end wall 1112 must be ensured.

[0053] In this embodiment, the inner conductor 12 may include a first columnar body 121 and a second columnar body 122. The first columnar body 121 is located in the outer conductor 111. The second columnar body 122 is connected to one end of the first columnar body 121 and is integrally formed with the first columnar body 121. In some embodiments, the second columnar body 122 may be arranged to extend from the first end wall 1112 of the outer conductor 111. The radial dimension of the second columnar body 122 is smaller than the radial dimension of the first columnar body 121. The end surface where the first columnar body 121 and the second columnar body 122 meet may be connected to the first end wall 1112, thereby achieving the connection between the inner conductor 12 and the first end wall 1112. The first end 12a is formed at the end of the first columnar body 121 away from the second columnar body 122. The second end 12b is formed at the end of the second columnar body 122 away from the first columnar body 121.

[0054] In this embodiment, the inner conductor 12 is provided with a receiving groove 1211 at the first end 12a. The depth of the receiving groove 1211 is less than the axial length of the inner conductor 12. The notch of the receiving groove 1211 is located at the first end 12a. The receiving groove 1211 can be used to accommodate the support structure 16 and can also be used to accommodate at least a portion of the heating pot 14. In some embodiments, a first limiting step 1212 and a second limiting step 1213 can be provided in the receiving groove 1211. The first limiting step 1212 and the second limiting step 1213 are arranged in sequence toward the first end 12a. The first limiting step 1212 can be used to limit the installation of the support structure 16. The second limiting step 1213 can be used to limit the installation of the transparent tube 15. In some embodiments, the bottom wall of the receiving groove 1211, which is located opposite to the notch, can be provided with a socket 1214, which can be used for plugging and installing the support structure 16.

[0055] As shown in FIG. 2 , in this embodiment, the resonant cavity 13 is defined by at least a first end wall 1112, a second end wall 1121, and an outer annular wall 1110 located between the first end wall 1112 and the second end wall 1121. Within the resonant cavity 13, a gap is provided between the first end 12a of the inner conductor 12 and the second end wall 1121. This gap forms a heating zone 131. When microwaves are fed into the resonant cavity 13, energy is transferred to the heating zone 131, thereby heating at least a portion of the aerosol-generating substrate within the heating pot 14 disposed within the heating zone 131.

[0056] As shown in Figures 2 and 5, in this embodiment, the heating pot 14 is removably disposed within the heating zone 131, thereby facilitating replacement of the heating pot 14. Specifically, the heating pot 14 can be partially disposed within the receiving groove 1211 and removably connected to the nozzle assembly 20. Of course, it is understood that in other embodiments, the heating pot 14 can be fixedly disposed within the heating zone 131. In other embodiments, the heating pot 14 can also be directly disposed at the first end 12a of the inner conductor 12. In this embodiment, the heating pot 14 can be made of a microwave-transmitting material with high microwave transmittance, such as quartz glass.

[0057] In this embodiment, the heating pot 14 may include a pot body 141 and a pot lid 142. The pot body 141 and pot lid 142 may be integrally formed. Of course, it is understood that in other embodiments, the pot body 141 and pot lid 142 may be detachably assembled. In some embodiments, the pot body 141 may include a pot wall for microwave penetration and a receiving cavity 1411 defined by the pot wall. The receiving cavity 1411 can be used to accommodate an aerosol-generating substrate, particularly a paste-like aerosol-generating substrate. The provision of the pot lid 142 enables the heating pot 14 to not only hold the aerosol-generating substrate but also to block splashing liquid and return it to the pot body 141, thereby achieving an explosion-proof function. During this process, since the splashing liquid is always within the microwave heating field, it is thoroughly atomized. Specifically, the pot lid 142 is disposed at one end of the pot body 141, and its cross-sectional dimension may be gradually reduced along the axial direction and away from the pot body 141. In some embodiments, the pot lid 142 may be generally truncated cone-shaped. Of course, it is understandable that in other embodiments, the pot cover 142 is not limited to being in the shape of a truncated cone. The pot cover 142 may be in a mesh structure.

[0058] In this embodiment, the heating pot 14 may include an air inlet 1421 and an air outlet 1422, which are staggered and communicate with the receiving chamber 1411. The air inlet 1421 is used to allow external air to enter the receiving chamber 1411, and the air outlet 1422 is used to allow the aerosol generated by heating the aerosol-generating substrate in the receiving chamber 1411 to be discharged. Specifically, in this embodiment, the air inlet 1421 and the air outlet 1422 are both provided on the pot cover 142, and the air inlet 1421 may be located at the central axis of the pot cover 142. The air outlet 1422 may be provided on the periphery of the air inlet 1421, and specifically, the air outlet 1422 may be formed by a mesh. The surface of the aerosol matrix in the pot body 141 facing the air inlet 1421 can form an atomizing surface, and the air flow can enter from the air inlet 1421 to impact the atomizing surface, thereby pushing the "splashing" aerosol generating matrix back into the pot body 141. Due to the staggered design of the air inlet 1421 and the air outlet 1422, the explosion phenomenon can be effectively suppressed. In some embodiments, the intensity of the atomization of the aerosol generating matrix can be reduced by adjusting the electric field strength, such as controlling the power, so as to achieve the prevention and control of explosion. In some other embodiments, the heating pot 14 can also be made of composite materials, and by preheating the pot body 141, the consistency of the temperature field between the pot body 141 and the aerosol generating matrix can be improved, thereby achieving the effect of preventing explosion and efficient heating. In some other embodiments, the air inlet 1421 can also be set on the periphery of the air outlet 1422.

[0059] In this embodiment, the wave-transmitting tube 15 is at least partially inserted into the first end 12a of the inner conductor 12 and at least partially inserted into the second end wall 1121 of the outer conductor unit 11. Specifically, one end of the wave-transmitting tube 15 can be inserted from the first end 12a of the inner conductor 12 into the receiving groove 1211, where it is positioned on the second limiting step 1213 in the inner conductor 12, and the other end is inserted into the connecting protrusion 112b along the axial direction of the connecting protrusion 112b. In some embodiments, the wave-transmitting tube 15 can be cylindrical with both ends through, and can be made of a wave-transmitting material with high microwave transmittance, such as a PI tube or a ceramic tube. In other embodiments, the wave-transmitting tube 15 can be omitted. Providing the wave-transmitting tube 15 in the heating zone 131 facilitates energy transmission to the heating pot 14 in the heating zone 131 and effectively reduces condensation in the resonant cavity 13.

[0060] In this embodiment, the support structure 16 extends toward the first end 12a to contact the heating pot 14, thereby supporting the heating pot 14. Specifically, the support structure 16 is mounted within the receiving groove 1211 of the inner conductor 12. It can be a thermally insulating support structure, providing insulation and preventing heat from the heating pot 14 from being transferred to the inner conductor 12. In this embodiment, the support structure 16 can be made of PEEK or a plastic material with a high thermal insulation coefficient. This prevents microwave energy from being transferred to the inner conductor 12 via thermal conduction, allowing more microwave energy to be used to heat the paste-like aerosol-forming matrix, thereby improving energy efficiency.

[0061] In this embodiment, the support structure 16 may include a support base 161 and a support column 162. The support base 161 may be roughly cylindrical and hollow. The support base 161 may be installed in the accommodating groove 1211 and located on the first limiting step 1212. A support wall 1612 is provided on the side of the support base 161 facing the first end 12a, and the support wall 1612 supports the heating pot 14. A mounting opening 1611 is provided on the side of the support base 161 opposite to the support wall 1612, and the edge of the mounting opening 1611 may abut against the first limiting step 1212. The support column 162 may be inserted through the mounting opening 1611 and connected and fixed to the support wall 1612. Specifically, the support column 162 may be screwed and fixed to the support wall 1612. A section of the support column 162 away from the support wall 1612 may be inserted through the insertion hole 1214 and then connected and fixed to the inner conductor 12. In this embodiment, a thermal insulation layer 163 is disposed between at least a portion of the support structure 16 and the inner conductor 12. Specifically, the thermal insulation layer 163 is disposed on the portion of the support column 162 that connects to the insertion hole 1214. The thermal insulation layer 163 may be a thermal insulation sleeve or a thermal insulation coating applied to the portion of the support column 162 that connects to the insertion hole 1214. In other embodiments, the thermal insulation layer 163 may also form a thermal insulation layer for still air.

[0062] In this embodiment, a section of the inner conductor 12 near the first end 12a defines an insulating cavity 17. Specifically, the insulating cavity 17 is formed between at least a portion of the support structure 16 and the inner conductor 12. Furthermore, in some embodiments, the insulating cavity 17 can be defined by the inner wall of the support seat 161, the outer wall of the support column 162, and a portion of the accommodating groove 1211. Of course, it is understandable that in other embodiments, the insulating cavity 17 can be formed entirely within the support structure 16. In some embodiments, the interior of the insulating cavity 17 can be filled with a low thermal conductivity material medium such as air or aerogel. By providing the insulating cavity 17, the loss of energy from the inner conductor 12 through heat conduction can be reduced or avoided, thereby improving energy utilization and solving the problem of low energy utilization.

[0063] In this embodiment, the microwave heating assembly further includes a first sealing structure 18, which is disposed between the wave-transmitting tube 15 and the inner conductor 12, thereby providing a sealed connection between the two. Specifically, the first sealing structure 18 is disposed at one end of the wave-transmitting tube 15 and is located on the second limiting step 1213. In some embodiments, the first sealing structure 18 can be a sealing ring, which can be coaxially disposed with the wave-transmitting tube 15.

[0064] In this embodiment, the microwave heating assembly further includes a second sealing structure 19, which is disposed between the resonant cavity cover 112 and the wave-transmitting tube 15, thereby providing a sealed connection between the two. In some embodiments, the second sealing structure 19 can be embedded in the inner wall of the connecting protrusion 112b, located at one end of the wave-transmitting tube 15, and sleeved around the outer circumference of the wave-transmitting tube 15. In some embodiments, the second sealing structure 19 can be a sealing ring and can be coaxially disposed with the wave-transmitting tube 15.

[0065] The first sealing structure 18 and the second sealing structure 19 can ensure that the aerosol or condensate generated by aerosol condensation in the wave-transmitting tube 15 is not likely to overflow into the resonance cavity 13, thereby improving the utilization rate of the aerosol and enhancing the user experience.

[0066] As shown in Figures 2, 6, and 8, in this embodiment, the microwave heating assembly 20 may include a nozzle 21 and an air passage structure 22. The nozzle 21 is positioned around the periphery of the air passage structure 22 and may be cylindrical. The air passage structure 22 is connected to the heating pot 14. The outer wall of the nozzle 21 may be provided with an air inlet 211, which allows external air to enter the air passage structure 22 and be transported through the air passage structure 22 to the heating pot 14. The other end of the nozzle 21 may be provided with a suction port 212, which is used to discharge aerosol for inhalation by the user. The suction port 212 is connected to the heating pot 14 through the air passage structure 22. In some embodiments, the inner wall of the nozzle 21 may be provided with a retaining rib 213. The retaining rib 213 extends from the end provided with the suction port 212 toward the air passage structure 22 and is positioned on the air passage structure 22 to retain the air passage structure 22. The airway structure 22 can be sleeved on the connecting protrusion 112 b and can be screwed to the connecting protrusion 112 b to introduce external air into the heating pot 14 and guide the generated aerosol toward the suction port 212 .

[0067] In this embodiment, the airway structure 22 can be located in the axial direction of the inner conductor 12, and includes a main body 22a and a sleeve portion 22b. The main body 22a can be located in the suction nozzle 21, and its cross-section is roughly circular. The sleeve portion 22b is provided at one end of the main body 22a, and can be sleeved on the connecting protrusion 112b and screwed to the connecting protrusion 112b. The sleeve portion 22b is roughly circular, and its radial dimension can be larger than the radial dimension of the main body 22a. In this embodiment, the airway structure 22 can be detachably connected to the heating pot 14. Specifically, a plug-in protrusion 22c is provided at the central axis of the sleeve portion 22b. The plug-in protrusion 22c can be inserted into the air inlet 1421 and can be interference fit with the air inlet 1421.

[0068] In this embodiment, the airway aerosol generating device further includes an air inlet channel 221 and an air outlet channel 222. The air inlet channel 221 and the air outlet channel 222 may be provided on the airway structure 22. Specifically, the air inlet channel 221 may include a first airway 2211 and a second airway 2212. The first airway 2211 may be in communication with the air inlet hole 211 and may extend radially along the main body 22a. The second airway 2212 is provided at the central axis of the main body 22a and may extend axially along the airway structure 22. One end of the second airway 2212 may be in communication with the first airway 2211, and the other end may be in communication with the air inlet 1421. The air outlet channel 222 may be provided axially along the main body 22a and may include a third airway 2221 and a fourth airway 2222. The third airway 2221 may extend axially along the airway structure 22 and be in communication with the air outlet 1422. In some embodiments, there may be two third air channels 2221, and the two third air channels 2221 may be located on opposite sides of the second air channel 2212. The fourth air channel 2222 is disposed at one end of the third air channel 2221 and communicates with the third air channel 2221. The end of the main body 22a away from the sleeve portion 22b may be partially hollowed out to form the fourth air channel 2222, which may communicate with the suction port 212 of the nozzle 21.

[0069] In this embodiment, the aerosol generating device further includes a microwave feeding structure 30, which may be an SMA coaxial connector. The microwave feeding structure 30 may be mounted on the first end wall 1112 of the outer conductor 111, communicate with the resonant cavity 13, and be connected to the microwave generating structure, thereby feeding microwaves into the resonant cavity 13. The microwave generating structure generates microwaves, which are fed through the microwave feeding structure 30, forming an antenna at the feeding location, thereby generating an alternating electric field. This transmits energy upward along the closed conductor formed by the inner conductor 12 and the resonant cavity 13 to the heating zone 131, creating a "micro-antenna" effect. This generates a micro-electric field, bringing energy from the periphery into the center, thereby heating the aerosol generating substrate in the heating pot 14.

[0070] Figures 9 to 11 illustrate a second embodiment of the aerosol generating device of the present invention. This embodiment differs from the first embodiment in that the pot lid 142 and pot body 141 may be separate structures. The pot body 141 may be cylindrical, and the pot lid 142 may be a mesh structure. The pot lid 142 may be sleeved onto the pot body 141, coaxially disposed therewith. The covering surface of the pot lid 142 that covers the pot body 141 may be a flat surface.

[0071] Figure 12 shows a third embodiment of the aerosol generating device of the present invention. This embodiment differs from the second embodiment in that the pot cover 142 can be omitted. The air inlet channel 221 can be located at the central axis of the pot body 141. Airflow can impact the atomizing surface along the central axis of the pot body 141. The aerosol generated by heating the aerosol-generating substrate can be transported directly through the pot body 141 to the air outlet channel 222.

[0072] Figures 13 to 16 show a fourth embodiment of the aerosol generating device of the present invention, which differs from the first embodiment in that the inner conductor 12 is a solid structure as a whole, the accommodating groove 1211 can be omitted, and the first end 12a of the inner conductor 12 has an end face, which is flat and can directly support the heating pot 14.

[0073] The heating pot 14 can be arranged on the end surface of the first end 12a. The pot cover 142 can include a cover body 142a and an air guide column 142b. The cover body 142a can be flat and can be connected to the side wall of the pot body 141 to form an integral body. The air inlet 1421 can be arranged on the cover body 142a and located on the periphery of the air guide column 142b. The air guide column 142b can be protrudingly arranged on the side of the cover body 142a away from the receiving cavity 1411 and located at the central axis of the cover body 142a, with two ends through the structure. The air outlet 1422 can be formed at one end of the air guide column 142b. The aerosol generated by the receiving cavity 1411 can enter the suction nozzle 21 along the air guide column 142b, and thus be ingested by the user.

[0074] In this embodiment, the nozzle 21 may include a blocking portion 21a and a suction portion 21b. The blocking portion 21a is at least partially inserted into the connecting protrusion 112b. The suction portion 21b may be disposed at the central axis of the blocking portion 21a and may protrude beyond the blocking portion 21a. The blocking portion 21a and the suction portion 21b are interconnected, forming a suction channel 21c inside. The air guide column 142b may be partially inserted into the suction channel 21c.

[0075] Figures 17 and 18 illustrate a fifth embodiment of the aerosol generating device according to the present invention. This embodiment differs from the fourth embodiment in that a receiving groove 1211 is provided at the first end 12a of the inner conductor 12, into which the heating pot 14 can be partially accommodated. A conductive pin 1215 is provided at the center axis of the receiving groove 1211. The conductive pin 1215 can extend toward the first end 12a and can be positioned higher than the notch of the receiving groove 1211.

[0076] In this embodiment, the heating pot 14 may include a bottom wall 1412, on which an inwardly convex portion 143 may be provided. A channel 1431 is provided on the bottom wall 1412. Specifically, the channel 1431 is formed by opening a blind hole on the convex portion 143 and is separated from the receiving cavity 1411.

[0077] It is understandable that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. An aerosol generating device, characterized in that, Comprising: An outer conductor unit (11), at least including a first end wall (1112), a second end wall (1121) oppositely arranged to the first end wall (1112), and an outer ring wall (1110) arranged between the first end wall (1112) and the second end wall (1121); the first end wall (1112), the second end wall (1121), and the outer ring wall (1110) define a resonant cavity (13); An inner conductor (12), at least partially arranged in the resonant cavity (13) and coaxially arranged with the resonant cavity (13), the inner conductor (12) has a first end (12a) and a second end (12b) oppositely arranged to the first end (12a) in the axial direction, the second end (12b) is connected to the first end wall (1112), and a gap is left between the first end (12a) and the second end wall (1121), and the gap forms a heating zone (131); A heating pot (14), at least partially arranged in the heating zone (131), the heating pot (14) has a pot wall for microwave penetration and a receiving cavity (1411) defined by the pot wall.

2. The aerosol generating device according to claim 1, wherein, The heating pot (14) is detachably arranged in the heating zone (131).

3. The aerosol generating device according to claim 1 or 2, characterized in that, The inner conductor (12) has an end face at the first end (12a), and the heating pot (14) is arranged on the end face of the first end (12a).

4. The aerosol generating device according to claim 1 or 2, characterized in that, The first end (12a) is provided with a receiving groove (1211); at least part of the heating pot (14) is received in the receiving groove (1211).

5. The aerosol generating device according to claim 4, characterized in that, A conductive pin (1215) extending towards the first end (12a) is arranged in the receiving groove (1211); The heating pot (14) includes a bottom wall (1412), and a channel (1431) for inserting the conductive pin (1215) is arranged on the bottom wall (1412), and the channel (1431) is separated from the receiving cavity (1411).

6. The aerosol generating device according to claim 1 or 2, characterized in that, It further includes a support structure (16), a receiving groove (1211) is formed at the first end (12a) of the inner conductor (12), one end of the support structure (16) is arranged in the receiving groove (1211), and the other end extends towards the first end (12a) to support the heating pot (14).

7. The aerosol generating device according to claim 6, wherein The support structure (16) is a heat-insulating support structure; At least part of the support structure (16) forms a heat-insulating cavity (17) with the inner wall of the inner conductor (12).

8. The aerosol generating device according to claim 1, wherein, It further includes an air channel structure (22) arranged in the axial direction of the inner conductor (12), and the air channel structure (22) is communicated with the receiving cavity (1411) of the heating pot (14).

9. The aerosol generating device according to claim 1, characterized in that, It further includes an air inlet channel (221) and an air outlet channel (222); The heating pot (14) includes an air inlet (1421) and an air outlet (1422) which are communicated with the receiving cavity (1411) and are arranged staggeredly; The air inlet (1421) is communicated with the air inlet channel (221), and the air outlet (1422) is communicated with the air outlet channel (222).

10. The aerosol generating device according to claim 1, characterized in that, It further includes a wave-transmitting tube (15), which is disposed in the heating zone (131), coaxially arranged with the inner conductor (12) and the outer conductor unit (11), and sleeved on the outer periphery of the heating pan (14); At least a part of the wave-transmitting tube (15) is inserted on the first end (12a) of the inner conductor (12), and a first sealing structure (18) is provided between the wave-transmitting tube (15) and the inner conductor (12); And / or, at least a part of the wave-transmitting tube (15) is inserted on the second end wall (1121), and a second sealing structure (19) is provided between the wave-transmitting tube (15) and the outer conductor unit (11).

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