Aerosol-generating device

Abstract

The invention relates to an aerosol generating device which comprises a resonant cavity for microwave to enter and at least provided with a first end wall and a second end wall opposite to the first end wall; the inner conductor is connected with the second end wall, is of a hollow structure and is provided with a first port, and a heating area for heating the aerosol generating substrate is formed between the first port and the first end wall; the channel is partially formed in the first end wall, is coaxial with the heating area and is used for allowing an aerosol generating substrate to penetrate through; and the at least one temperature measuring structure is at least partially mounted in the channel. According to the aerosol generating device, at least one temperature measuring structure is mounted in the channel through which the aerosol generating substrate penetrates, so that the temperature near the heating area can be measured through the temperature measuring structure, and the temperature of the heating area can be adjusted and controlled; the phenomenon that the aerosol generating substrate is insufficiently heated or is burnt due to excessive heating is avoided, and the smoking taste of the aerosol is guaranteed.

Description

Technical Field

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

[0002] The aerosol generating device of the related art usually has a resonant cavity; the resonant cavity is formed by the cooperation of an inner conductor and an outer conductor, and microwaves are injected into the resonant cavity so that a ring capacitor can appear in the direction transverse to the inner conductor and the resonant cavity to form an alternating electric field that changes with the frequency domain, thereby achieving heating of the aerosol generating matrix. The aerosol generating device usually cannot or is difficult to accurately measure the temperature of the heating area. The temperature measurement structure easily affects the resonant frequency, which leads to the inability to accurately control the temperature of the heating area, resulting in "some aerosol generating matrices are not heated sufficiently, and some aerosol generating matrices are overheated and burnt, etc.", which reduces the user experience. 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: construct an aerosol generating device, comprising:

[0005] A resonant cavity for microwave injection, comprising at least a first end wall and a second end wall arranged opposite to the first end wall;

[0006] an inner conductor connected to the second end wall and having a hollow structure, and having a first port, wherein a heating zone for heating the aerosol generating substrate is formed between the first port and the first end wall;

[0007] A channel, partially opened on the first end wall, coaxially arranged with the heating zone, for the aerosol generating matrix to pass through;

[0008] At least one temperature measuring structure is at least partially installed in the channel.

[0009] In some embodiments, there are at least two temperature measuring structures, and at least two temperature measuring structures are spaced apart along the circumference of the channel.

[0010] In some embodiments, the temperature measuring structure is at least partially disposed on a channel wall of the channel protruding toward the central axis of the channel;

[0011] The portion of the temperature measuring structure protruding from the channel wall has a pressing surface pressed against the aerosol generating substrate.

[0012] In some embodiments, a guide groove for guiding and installing the temperature measuring structure is provided on the channel wall of the channel; the guide groove has a notch opening facing the central axis of the channel;

[0013] The temperature measuring structure at least partially protrudes from the notch.

[0014] In some embodiments, the temperature measuring structure includes a temperature measuring portion and a conductive portion disposed at one end of the temperature measuring portion;

[0015] The inner conductor includes a second port disposed opposite to the first port, and the conductive portion extends toward the second port.

[0016] In some embodiments, a first through hole for the temperature measuring structure to pass through is provided on the side wall of the inner conductor;

[0017] A first guiding groove is formed on the outer side wall of the inner conductor. The first guiding groove has two ends, one of which is connected to the first through hole and the other extends toward the first port.

[0018] In some embodiments, a fixing structure is further included, and the fixing structure is arranged at the first port for fixing the temperature measuring structure;

[0019] The fixing structure is coaxially arranged with the inner conductor and is a hollow structure with two ends penetrating therethrough, and is connected with the inner conductor to form at least a portion of the channel;

[0020] The temperature measuring structure is at least partially installed on the inner wall of the fixed structure.

[0021] In some embodiments, the inner wall of the fixed structure is provided with at least one pressing surface for pressing the aerosol generating substrate.

[0022] In some embodiments, a guide groove for guiding and installing the temperature measuring structure is provided on the channel wall of the channel; the guide groove is provided on the inner wall of the fixed structure; the guide groove has a notch opening facing the central axis of the channel;

[0023] The temperature measuring structure at least partially protrudes from the notch.

[0024] In some embodiments, the resonant cavity cover is included, the first end wall is formed on the resonant cavity cover; the resonant cavity cover includes a guide column coaxially arranged with the inner conductor, the guide column is a through-structure at both ends, and at least a part of the channel is formed on the inner side;

[0025] The temperature measuring structure is at least partially mounted on the inner wall of the guide column and extends toward the heating zone along the axial direction of the guide column;

[0026] Alternatively, the channel is at least partially formed in the inner conductor, and the temperature measuring structure is at least partially installed on the inner wall of the inner conductor.

[0027] The implementation of the aerosol generating device of the present invention has the following beneficial effects: the aerosol generating device installs at least one temperature measuring structure in a channel through which the aerosol generating matrix passes and is coaxially arranged with the heating zone, and the temperature near the heating zone can be measured by the temperature measuring structure, while minimizing the influence on the resonant frequency, thereby facilitating the adjustment and control of the heating temperature of the aerosol generating matrix, avoiding insufficient heating or overheating and burning of the aerosol generating matrix, ensuring the mouth feel of the aerosol inhalation, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0029] Figure 1 is a schematic structural diagram of an aerosol generating system in a first embodiment of the present invention;

[0030] Figure 2 yes Figure 1 A schematic diagram of the structure of a microwave heating component of an aerosol generating system is shown;

[0031] Figure 3 yes Figure 2 a cross-sectional view of the microwave heating assembly shown;

[0032] Figure 4 yes Figure 3 A schematic diagram of the structure of the inner conductor in the microwave heating assembly shown;

[0033] Figure 5 yes Figure 4 A cross-sectional view of the inner conductor shown;

[0034] Figure 6 yes Figure 3 A schematic structural diagram of a fixed structure in the microwave heating assembly shown;

[0035] Figure 7 yes Figure 3 A schematic diagram of the shaft sleeve structure in the microwave heating assembly shown;

[0036] Figure 8 is a schematic structural diagram of a microwave heating assembly of an aerosol generating system according to a second embodiment of the present invention;

[0037] Fig. 9 yes Figure 8 a cross-sectional view of the microwave heating assembly shown;

[0038] Fig.10 yes Fig. 9 A schematic structural diagram of a fixed structure in the microwave heating assembly shown;

[0039] Fig.11 yes Fig.10 A cross-sectional view of the fixing structure shown;

[0040] Fig.12 is a schematic structural diagram of a microwave heating component in an aerosol generating system according to a third embodiment of the present invention;

[0041] Fig.13 yes Fig.12 a cross-sectional view of the microwave heating assembly shown;

[0042] Fig.14 yes Fig.13 A schematic structural diagram of a fixed structure in the microwave heating assembly shown;

[0043] Fig.15 yes Fig.13 A schematic diagram of the structure of a resonant cavity cover in the microwave heating assembly shown;

[0044] Fig.16 1 is a schematic diagram of the structure of the inner conductor and the aerosol generating matrix in the aerosol generating system of the fourth embodiment of the present invention;

[0045] Fig.17 yes Fig.16 A schematic diagram of the inner conductor structure shown;

[0046] Fig.18 yes Fig.17 A cross-sectional view of the inner conductor shown. DETAILED DESCRIPTION

[0047] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "vertical", "horizontal", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in specific directions, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0048] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, 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 intermediate elements. The terms "first", "second", "third", 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 technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can 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.

[0049] Figure 1 The first embodiment of the aerosol generating system of the present invention is shown, and the aerosol generating system may include an aerosol generating device 100 and an aerosol generating substrate 200. The aerosol generating device 100 is used to heat the aerosol generating substrate 200 to generate an aerosol for the user to inhale. The aerosol generating substrate 200 can be detachably assembled on the aerosol generating device 100, and can generate an aerosol in a heated state. In some embodiments, the aerosol generating substrate 200 is columnar, specifically, the aerosol generating substrate 200 can be cylindrical, and can be a solid material in the form of silk strips, particles or sheets made of leaves, flowers and / or stems of plants, and aroma components can be further added to the solid material.

[0050] like Figure 1 to Figure 2 As shown, in this embodiment, the aerosol generating device 100 may include a housing 10, a microwave heating assembly 20, and a cover assembly 30. The housing 10 is used to accommodate the microwave heating assembly 20. The microwave heating assembly 20 can use microwaves to heat the aerosol generating substrate 200. The cover assembly 30 can be detachably assembled on the housing 10 and is used to cover the housing 10.

[0051] In this embodiment, the housing 10 may be a cylindrical structure and may be arranged longitudinally, with a cavity formed inside to accommodate the microwave heating assembly 20. In some embodiments, the cross section of the housing 10 may be substantially square. In some embodiments, the housing 10 may be made of metal. Of course, it is understandable that in other embodiments, the housing 10 may not be limited to metal, but may be plastic or other materials.

[0052] like Figure 3As shown, in this embodiment, the microwave heating assembly 20 may include a cylinder 21, an inner conductor 22 and a temperature measuring structure 25. The cylinder 21 is used to form a resonant cavity 210, and microwaves can be fed into the cylinder 21 by connecting with the microwave injection structure. The inner conductor 22 is at least partially disposed in the cylinder 21, and cooperates with the cylinder 21 to form a resonant cavity 210. The resonant cavity 210 has a first end wall 210a, a second end wall 210b, an inner annular wall and an outer annular wall. The first end wall 210a is arranged opposite to the second end wall 210b, and the inner annular wall and the outer annular wall are arranged at intervals and coaxially, wherein the outer annular wall is the inner side wall of the cylinder 21, and the inner annular wall can be the outer side wall of the inner conductor 22. By providing the inner conductor 22, a heating zone 2101 can be formed in the resonant cavity 210 and at one end of the inner conductor 22. When microwaves are injected into the resonant cavity 210, a ring capacitance can appear in the transverse direction between the inner conductor 22 and the resonant cavity 210 to form an alternating electric field that changes with the frequency, thereby allowing energy to enter the heating zone 2101 to heat the aerosol generating substrate 200. The microwave heating assembly 20 also has a channel 28 for the aerosol generating substrate 200 to pass through. The temperature measuring structure 25 can be installed at least partially in the channel 28 and can be used to measure the temperature of the heating zone 2101. It can be understood that when the aerosol generating substrate 200 is inserted into the aerosol generating device 100, the temperature measuring structure 25 measures the heating temperature of the aerosol generating substrate 200, or the surface temperature of the aerosol generating substrate 200.

[0053] In this embodiment, the cylinder 21 may be roughly a cylinder. Of course, it can be understood that in some other embodiments, the cylinder 21 is not limited to a cylinder, and may be a square cylinder or a cylinder of other shapes. The cylinder 21 may include an opening 211, a bottom wall 212, and an annular wall 213. The opening 211 is arranged opposite to the bottom wall 212. The bottom wall 212 is arranged opposite to the opening 211, which can play a role in supporting the inner conductor 22. The annular wall 213 is arranged on the bottom wall 212, and cooperates with the bottom wall 212 to define the resonant cavity 210. The bottom wall 212 can be used to form the second end wall 210b of the resonant cavity 210. The annular wall 213 can form the outer annular wall of the resonant cavity 210. The bottom wall 212 is provided with an inlet 2121 for microwave intrusion.

[0054] like Figure 4 and Figure 5As shown, in this embodiment, the inner conductor 22 is cylindrical, and its cross section can be roughly circular, wherein the axis thereof is arranged to coincide with the central axis of the cylinder 21, and one end thereof abuts against the bottom wall 212, thereby realizing connection with the second end wall 210b. It can be understood that in some embodiments, the cross section of the inner conductor 22 is not limited to being circular, and can be square, elliptical, etc. In some embodiments, the inner conductor 22 is a hollow structure, and at least a portion of the channel 28 is formed inside, for at least a portion of the aerosol generating matrix 200 to pass through. In some embodiments, the inner conductor 22 may include a first tube segment 221 and a second tube segment 222 arranged at one end of the first tube segment 221; the radial dimension of the first tube segment 221 may be greater than the radial dimension of the second tube segment 222, and the first tube segment 221 may be arranged to penetrate each other. At least a portion of the channel 28 is formed in the first tube segment 221.

[0055] In this embodiment, the inner conductor 22 has a first port 22a and a second port 22b. The first port 22a is located at one end of the first tube section 221 away from the second tube section 222, and can be used for the aerosol generating matrix 200 to pass through. In some embodiments, the length of the first tube section 221 is less than the axial height of the resonant cavity 210, so that a gap is left between the first port 22a and the first end wall 210a, and the gap between the first port 22a and the first end wall 210a forms a heating zone 2101. When microwaves enter the resonant cavity 210, a ring ignition occurs between the outer wall of the inner conductor 22 and the inner wall of the resonant cavity 210 to form an alternating electric field that changes with the frequency domain, and energy can be transmitted to the heating zone 2101, thereby heating the aerosol generating matrix 200 to generate aerosol. The second port 22b is arranged opposite to the first port 22a, and is located at one end of the second tube section 222 away from the first tube section 221.

[0056] In this embodiment, a first through hole 2211 is provided on the side wall of the inner conductor 22. The first through hole 2211 is located on the side wall of the first tube section 221 and is approximately located in the middle of the first tube section 221. A set distance is left between the first through hole 2211 and the first port 22a. The first through hole 2211 may be three. In some embodiments, the first through hole 2211 may be one, two or more than three, which are arranged in a one-to-one correspondence with the temperature measuring structure 25. In some embodiments, a first guide groove 2212 is provided on the outer side wall of the inner conductor 22. The first guide groove 2212 may be three. In some embodiments, the first guide groove 2212 may be one, two or more than three, which are arranged in a one-to-one correspondence with the temperature measuring structure 25 and the first through hole 2211. The first guide groove 2212 is a strip groove and may be arranged along the axial direction of the inner conductor 22, i.e., a straight groove. Of course, it can be understood that the first guide groove 2212 may also be arranged in a bent manner. The first guide groove 2212 has two ends, one of which is connected to the first through hole 2211 and communicates with the first through hole 2211, and the other end extends toward the first port 22a. In this embodiment, the radial dimension of the portion of the first pipe segment 221 between the first through hole 2211 and the first port 22a is smaller than the radial dimension of the portion of the first pipe segment 221 between the first through hole 2211 and the end where the first pipe segment 221 and the second pipe segment 222 are connected.

[0057] like Figure 6 As shown, in this embodiment, the microwave heating assembly 20 further includes a fixing structure 23, which is disposed at the first port 22a and is used to fix the temperature measuring structure 25. In some embodiments, the fixing structure 23 is sleeved on a portion of the inner conductor 22 and can be interference fit with the inner conductor 22. The fixing structure 23 is at least partially located at the heating zone 2101, and can be made of a wave-transmitting material. In some embodiments, the fixing structure 23 can be made of polyimide (PI). The fixing structure 23 is coaxially arranged with the inner conductor and is a hollow structure with two ends penetrating therethrough, and it is connected with the inner conductor 22 to form at least a partial channel 28.

[0058] In this embodiment, the fixing structure 23 may include an integrally formed first matching portion 23a and a second matching portion 23b. The first matching portion 23a and the second matching portion 23b are both tubular. The radial dimension of the first matching portion 23a is greater than the radial dimension of the second matching portion 23b, wherein the first matching portion 23a may be sleeved on the outer circumference of the inner conductor 22 and have an interference fit with the inner conductor 22. The second matching portion 23b is disposed at one end of the first matching portion 23a and may be matched with the resonant cavity cover 24. In some other embodiments, the radial dimensions of the first matching portion 23a and the second matching portion 23b may also be comparable, and in some other embodiments, the radial dimension of the first matching portion 23a may also be smaller than the radial dimension of the second matching portion 23b, and the first matching portion 23a may be embedded in the inner conductor 22.

[0059] In this embodiment, a second through hole 231 is provided on the side wall of the fixed structure 23. The second through hole 231 may be located on the side wall of the second matching portion 23b and penetrates the side wall of the second matching portion 23b. There may be three second through holes 231. In some other embodiments, there may be one, two or more than three second through holes 231, which may correspond to the temperature measuring structures 25. The second through holes 231 may be used to allow the temperature measuring structure 25 to penetrate into the inner side of the fixed structure 23.

[0060] In this embodiment, the outer side wall of the fixing structure 23 is provided with a second guide groove 232, which is a strip groove having two ends, one of which is connected to the first guide groove 2212, and the other extends toward the second matching portion 23b away from the end of the first matching portion 23a. There may be three second guide grooves 232, and in some other embodiments, there may be one, two or more than three, which may be arranged in a one-to-one correspondence with the temperature measuring structure 25. The second through hole 231 is located on the bottom surface of the second guide groove 232.

[0061] In this embodiment, the channel wall of the channel 28 is provided with a guide groove 233, specifically, the guide groove 233 is located on the inner wall of the fixed structure 23, and it can be arranged opposite to the second guide groove 232. The second through hole 231 can be located in the guide groove 233, and the guide groove 233 can be used for guiding the installation of the temperature measuring structure 25. It can be understood that in some other embodiments, the guide groove 233 is not limited to being arranged on the inner wall of the fixed structure 23. In some embodiments, there can be three guide grooves 233, and in some other embodiments, there can also be one, two or more than two guide grooves, which can be arranged one-to-one with the temperature measuring structure 25.

[0062] In the present embodiment, the inner wall of the fixed structure 23 is provided with at least one extrusion surface 234. In the present embodiment, the extrusion surface 234 may be three, which may be provided in one-to-one correspondence with the second perforations 231, and may be located on two opposite sides of the guide groove 233, that is, the guide groove 233 and the second perforations 231 are provided on the extrusion surface 234. Specifically, a protrusion may be provided on the inner wall of the fixed structure 23, and the extrusion surface 234 may be formed on the protruding end surface of the protrusion. The extrusion surface 234 may squeeze the aerosol generating matrix 200, and generate an extrusion effect with the aerosol generating matrix 200. A uniform extrusion force may be generated through the three extrusion surfaces 234, so that the temperature measuring structure 25 may be closely attached to the surface of the aerosol generating matrix 200, thereby achieving accurate temperature measurement.

[0063] In this embodiment, a guide surface 235 is disposed on the inner wall of the fixing structure 23 , and the guide surface 235 can be connected to an end of the second matching portion 23 b away from the first matching portion 23 a and inclined toward the extrusion surface 234 , so as to guide the aerosol generating matrix 200 .

[0064] For example Figure 3 As shown, in this embodiment, the microwave heating assembly 20 also includes a resonant cavity cover 24, and the resonant cavity cover 24 covers the opening 211, and the resonant cavity 210 can be formed into a closed cavity. In some embodiments, the resonant cavity cover 24 may include a covering portion 241 and a guide column 242. The covering portion 241 is sleeved on the cylinder 21 and covers the opening 211. The wall surface of the covering portion 241 and the bottom wall 212 of the cylinder 21 oppositely arranged forms the first end wall 210a of the resonant cavity 210. The shape of the resonant cavity cover 24 can be adapted to the shape and size of the opening 211. In this embodiment, the cross section of the resonant cavity cover 24 can be roughly circular. In some embodiments, the guide column 242 is arranged at the central axis of the covering portion 241, and its cross section can be roughly circular, and its radial dimension can be smaller than the radial dimension of the covering portion 241. The guide post 242 is coaxially arranged with the inner conductor 22, and the guide post 242 is a through structure at both ends. The guide post 242, the fixing structure 23 and the inner conductor 22 are connected in sequence to form at least a portion of the channel 28. The second matching portion 23b can be inserted from the covering portion 241 to connect with one end of the guide post 242.

[0065] In the present embodiment, the temperature measuring structure 25 can be three, and the three temperature measuring structures 25 are all partially installed in the channel 28, and can be arranged at intervals along the circumference of the channel 28. It is understandable that in some other embodiments, the temperature measuring structure 25 is not limited to three, and it can be one or more. Multi-point temperature measurement can be achieved by more than three temperature measuring structures 25, thereby ensuring the accuracy and consistency of temperature measurement. In some embodiments, the temperature measuring structure 25 can be selected as a thermocouple. Of course, it is understandable that in some other embodiments, the temperature measuring structure 25 is not limited to a thermocouple, but can be a temperature sensor. The temperature measuring structure 25 can measure the temperature of the heating zone 2101, and feed the temperature back to the main control board. The main control board can input the RF energy size according to the information fed back by the temperature measuring structure 25, and then adjust the temperature of the heating zone 2101 to achieve temperature control heating of the aerosol generating matrix 200.

[0066] In the present embodiment, the temperature measuring structure 25 may be partially protruding from the channel wall of the channel 28 toward the central axis of the channel 28. Of course, it is understandable that in some other embodiments, the temperature measuring structure 25 may also be fully protruding toward the central axis of the channel 28. The temperature measuring structure 25 has a pressing surface 2511, and the pressing surface 2511 may be located on the protruding channel wall portion of the temperature measuring structure, which may fit tightly with the aerosol generating matrix 200. By protruding the temperature measuring structure 25 toward the central axis of the channel 28, it is convenient for the temperature measuring structure 25 to produce an extrusion effect with the aerosol generating matrix 200, generate a uniform extrusion force, and fit tightly with the surface of the aerosol generating matrix 200, thereby achieving accurate temperature measurement. Specifically, in the present embodiment, the temperature measuring structure 25 partially protrudes from the notch of the guide groove 233 toward the central axis of the channel 28.

[0067] In this embodiment, the temperature measuring structure 25 may include a temperature measuring portion 251 and a conductive portion 252. The temperature measuring portion 251 may be a temperature measuring probe. The temperature measuring portion 251 may be arranged protruding from the channel wall of the channel 28, and the pressing surface 2511 may be formed on the temperature measuring portion 251. The conductive portion 252 may be connected to the temperature measuring portion 251 and extend toward the second port 22b. Specifically, it may extend from the second port 22b and may be connected to the main control board for conduction and signal transmission. In this embodiment, the temperature measuring portion 251 of the temperature measuring structure 25 can pass from the inner conductor 22 to the outer wall of the inner conductor 22 and then pass into the fixed structure 23. Specifically, it can be sequentially passed from the second port 22b, the first through hole 2211, the first guide groove 2212, the second guide groove 232, and the second through hole 231 into the guide groove 233. The temperature measuring portion 251 can be partially located in the guide groove 233 and partially protrude from the channel wall of the channel 28 to be tightly squeezed with the aerosol generating matrix 200 to achieve the effect of stable temperature measurement.

[0068] In this embodiment, the microwave heating assembly 20 further includes a conductive sheet 26, which is disposed in the area between the first through hole 2211 and the first port 22a, wrapped around the outer wall of the inner conductor 22 in the area, to cover the notch of the first guide groove 2212, and flush with the outer wall of the area between the first through hole 2211 and the second tube section 222 on the inner conductor 22, so that the annular wall defining the resonant cavity 210 is more uniform and flat, thereby facilitating the improvement of the uniformity and stability of microwave heating. In some embodiments, the conductive sheet 26 can be a metal sheet, such as a copper sheet. The conductive sheet 26 can be lower than the first port 22a or flush with the first port 22a, so that a heating zone 2101 can be formed between the first port 22a and the opening 211.

[0069] like Figure 3 and Figure 7As shown, in this embodiment, the microwave heating assembly 20 also includes a sleeve 27, which is partially inserted from the second port 22b into the second pipe section 222, and the sleeve 27 is a through-structure at both ends, and a lifting channel 271 for lifting the lifting mechanism can be formed inside. In this embodiment, the sleeve 27 may include a first columnar body 27a and a second columnar body 27b coaxially arranged. The first columnar body 27a and the second columnar body 27b have radial dimensions, and the outer diameter of the second columnar body 27b may be greater than the outer diameter of the first columnar body 27a. The first columnar body 27a can penetrate into the second pipe section 222, and the second columnar body 27b is located at the second port 22b, which can play a role of limiting. In this embodiment, the outer wall of the sleeve 27 may have a limiting groove 272 corresponding to each temperature measuring structure 25, and the limiting groove 272 can be used for each temperature measuring structure 25 to limit the installation. The conductive portion 252 of the temperature measuring structure 25 can pass through the limiting groove 272 to connect with the main control board. In this embodiment, the limiting groove 272 is arranged along the axial direction of the sleeve 27 and is a through groove with two ends passing through. There can be multiple limiting grooves 272, and multiple limiting grooves 272 can be arranged at intervals along the circumference of the sleeve 27.

[0070] In this embodiment, the channel 28 is sequentially formed in the resonant cavity cover 24, the fixing structure 23 and the inner conductor 22, which can be used for the aerosol generating substrate to pass through. In some embodiments, the channel 28 can be partially formed on the first end wall 210a, and is coaxially arranged with the heating zone 2101, and the heating zone 2101 can be located at the periphery of the channel 28. Of course, in some other embodiments, the heating zone 2101 can also be located in the channel 28.

[0071] In this embodiment, the microwave heating assembly 20 may further include a lifting mechanism, which is at least partially installed in the inner conductor 22 and can be used to drive the aerosol generating substrate 200 to move away from the second port 22b. By providing the lifting mechanism, when the user inhales aerosol, the lifting mechanism can push the aerosol generating substrate 200 to move 1 mm toward the heating zone 2101, thereby achieving segmented heating of the aerosol generating substrate 200, thereby enhancing the user experience.

[0072] Figures 8 to 11The second embodiment of the aerosol generating system of the present invention is shown, which differs from the first embodiment in that the fixed structure 23 is roughly cylindrical, and the radial dimensions of the first matching portion 23a and the second matching portion 23b are comparable. The first matching portion 23a can be placed in the inner conductor 22, coaxially arranged with the inner conductor 22, and interference fit with the inner conductor 22. The second through hole 231 and the second guide groove 232 can be located on the first matching portion 23a and arranged close to the second matching portion 23b, and the guide groove 233 can be omitted. The channel 28 can be formed in the fixed structure 23 and the resonant cavity cover 24. The temperature measuring structure 25 can pass through the second through hole 231 and partially protrude from the channel wall of the channel 28. In this embodiment, one end of the first matching portion 23a away from the second matching portion 23b abuts against the bottom wall of the inner conductor 22, and the first through hole 2211 is located at a section of the first matching portion 23a away from the second matching portion 23b, and extends from the end of the first matching portion 23a away from the second matching portion 23b to the second guide groove 232 located at the first matching portion 23a.

[0073] Figures 12 to 15 The third embodiment of the aerosol generating system of the present invention is shown, which differs from the first embodiment in that the fixing structure 23 is disposed at one end of the guide post 242, between the guide post 242 and the inner conductor 22. The fixing structure 23 may be substantially annular, and the guide groove 233 may extend from one end surface of the fixing structure 23 to the other end surface of the fixing structure 23.

[0074] The temperature measuring structure 25 is at least partially mounted on the inner wall of the guide post 242 and extends along the axial direction of the guide post 242 toward the heating zone 2101. Specifically, a third guide groove 243 is provided on the inner side wall of the resonant cavity cover 24. The third guide groove 243 is located on the inner wall of the guide post 242 and extends along the axial direction of the guide post 242. The third guide groove 243 can be arranged one-to-one with the guide groove 233 on the fixed structure 23 and be correspondingly connected. The temperature measuring portion 251 of the temperature measuring structure 25 can be guided to the guide groove 233 along the third guide groove 243, and the temperature measuring portion 251 can extend to one end of the guide groove 233 disposed toward the heating zone 2101, and can be flush with the end surface of the end of the guide groove 233 disposed toward the heating zone 2101, or protrude toward the heating zone 2101 by a set distance, and the set distance can be less than or equal to 1.0 mm.

[0075] In the present embodiment, the microwave heating assembly 20 further comprises a tube body 29, which is made of a wave-transmitting material and can be penetrated by microwaves. In some embodiments, the tube body 29 can be a quartz tube. The tube body 29 can be partially disposed in the inner conductor 22, coaxially disposed with the inner conductor 22, and interference fit. The length of the tube body 29 can be greater than the axial height of the inner conductor 22, and it can protrude from the first port 22a to the fixed structure 23 to connect. By providing the tube body 29, water vapor generated in the periphery of the aerosol generating matrix 200 after heating can be prevented from entering the resonant cavity 210, thereby affecting the stability of heating in the heating zone 2101. In some embodiments, the tube body 29 can be omitted.

[0076] Figures 16 to 18 The fourth embodiment of the aerosol generating system of the present invention is shown. The difference between the fourth embodiment and the first embodiment is that the fixing structure 23 can be omitted, and the channel 28 can be formed in the resonant cavity cover 24 and the inner conductor 22. There can be six temperature measuring structures 25, and at least a part of each temperature measuring structure 25 can be directly mounted on the inner wall of the inner conductor 22. The guide groove 233 can be opened on the inner wall of the inner conductor 22, and it can extend from the first port 22a of the inner conductor 22 toward the second port 22b. The length of the guide groove 233 can also be less than the length of the first pipe section 221. Of course, in some other embodiments, the length of the guide groove 233 can be equivalent to the first pipe section 221. The conductive parts of the multiple temperature measuring structures 25 can extend from the second port 22b and can be connected as a whole, and then connected to the main control board.

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

Claims

1. An aerosol generating device, characterized in that: include: A resonant cavity (210) for microwave entry, comprising at least a first end wall (210a) and a second end wall (210b) disposed opposite to the first end wall (210a); an inner conductor (22) connected to the second end wall (210b) and having a hollow structure, and having a first port (22a); a heating area (2101) for heating the aerosol generating substrate (200) is formed between the first port (22a) and the first end wall (210a); A channel (28), partially opened on the first end wall (210a), coaxially arranged with the heating zone (2101), for the aerosol generating substrate (200) to pass through; At least one temperature measuring structure (25) is at least partially installed in the channel (28).

2. The aerosol generating device according to claim 1, characterized in that: There are at least two temperature measuring structures (25), and the at least two temperature measuring structures (25) are arranged at intervals along the circumference of the channel (28).

3. The aerosol generating device according to claim 1, characterized in that: The temperature measuring structure (25) is arranged at least partially protruding from the channel wall of the channel (28) toward the central axis of the channel (28); The portion of the temperature measuring structure (25) protruding from the channel wall has a pressing surface (2511) pressed against the aerosol generating matrix (200).

4. The aerosol generating device according to claim 3, characterized in that: A guide groove (233) for guiding and installing the temperature measuring structure (25) is provided on the channel wall of the channel (28); the guide groove (233) has a notch opening facing the central axis of the channel (28); The temperature measuring structure (25) at least partially protrudes from the notch.

5. The aerosol generating device according to claim 1, characterized in that: The temperature measuring structure (25) comprises a temperature measuring portion (251) and a conductive portion (252) arranged at one end of the temperature measuring portion (251); The inner conductor (22) comprises a second port (22b) arranged opposite to the first port (22a), and the conductive portion (252) extends toward the second port (22b).

6. The aerosol generating device according to claim 5, characterized in that: A first through hole (2211) for the temperature measuring structure (25) to pass through is provided on the side wall of the inner conductor (22); A first guiding groove (2212) is provided on the outer side wall of the inner conductor (22), and the first guiding groove (2212) has two ends, one of which is connected to the first through hole (2211), and the other extends toward the first port (22a).

7. The aerosol generating device according to claim 1, characterized in that: It also includes a fixing structure, which is arranged on the first port (22a) and is used to fix the temperature measuring structure (25); The fixing structure is coaxially arranged with the inner conductor (22) and is a hollow structure with two ends penetrating therethrough, and is connected with the inner conductor (22) to form at least a portion of the channel (28); The temperature measuring structure (25) is at least partially mounted on the inner wall of the fixed structure.

8. The aerosol generating device according to claim 7, characterized in that: The inner wall of the fixed structure is provided with at least one extrusion surface for extruding the aerosol generating substrate (200).

9. The aerosol generating device according to claim 7, characterized in that: A guide groove (233) for guiding and installing the temperature measuring structure (25) is provided on the channel wall of the channel (28); the guide groove (233) is arranged on the inner wall of the fixed structure; the guide groove (233) has a notch opening facing the central axis of the channel (28); The temperature measuring structure (25) at least partially protrudes from the notch.

10. The aerosol generating device according to claim 1, characterized in that The invention comprises a resonant cavity cover (24), wherein the first end wall (210a) is formed on the resonant cavity cover (24); the resonant cavity cover (24) comprises a guide column (242) coaxially arranged with the inner conductor (22), the guide column (242) being a through-structure at both ends, and forming at least a part of the channel (28) on the inner side; The temperature measuring structure (25) is at least partially installed on the inner wall of the guide column (242), and extends along the axial direction of the guide column (242) toward the heating zone (2101); Alternatively, the channel (28) is at least partially formed in the inner conductor (22), and the temperature measuring structure (25) is at least partially installed on the inner wall of the inner conductor (22).

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