Aerosol generating device and microwave heating component

Abstract

This utility model relates to an aerosol generating device and a microwave heating assembly. The microwave heating assembly includes: a hollow radiating structure with a strong field area formed near it; a temperature measuring structure, at least partially installed in the radiating structure, including a temperature probe disposed within the radiating structure; and a positioning structure, at least partially disposed in the radiating structure, for positioning the temperature probe. By incorporating a positioning structure within the radiating structure and using this structure to position the temperature probe of the temperature measuring structure (at least partially installed within the radiating structure), this microwave heating assembly improves temperature measurement efficiency and accuracy, thereby facilitating temperature control and enhancing the taste of the generated aerosol, thus improving the user experience.

Description

Technical Field

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

[0002] Currently, most aerosol generating devices on the market employ heated but not burned technology. This technology uses a heat source to heat the aerosol generating matrix, achieving a better flavor through precise temperature control. Another heating method exists: microwave heating. This method uses a microwave source to heat the medium, achieving a faster heating effect and more fully stimulating the flavor of the medium. However, microwave heating is highly efficient and heats up quickly. If the temperature control program cannot accurately detect the temperature of the aerosol generating matrix, it can easily lead to overheating or even burning of the matrix, thus affecting the inhalation experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an improved microwave heating component, and further to provide an improved aerosol generating device.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a microwave heating component, comprising:

[0005] A radiating structure, hollow in design, with a strong field region formed near the radiating structure;

[0006] A temperature measuring structure, at least partially installed in the radiation structure, and including a temperature measuring probe disposed in the radiation structure;

[0007] A positioning structure, at least partially disposed within the radiation structure, is used for positioning and installing the temperature probe.

[0008] In some embodiments, the temperature measuring structure is configured corresponding to the strong field region.

[0009] In some embodiments, the positioning structure includes a positioning slot, and the temperature probe is mounted on the positioning slot.

[0010] In some embodiments, the positioning slot is provided corresponding to the strong field area.

[0011] In some embodiments, the positioning slot has a groove facing the inner wall of the radiation structure; the temperature probe is flush with or protrudes from the groove and contacts the inner wall of the radiation structure.

[0012] In some embodiments, one end of the radiating structure is provided with an opening;

[0013] The positioning structure extends toward the opening;

[0014] And / or, the temperature measuring structure further includes a temperature measuring lead connected to the temperature measuring probe;

[0015] The positioning structure is provided with a lead channel for the temperature measuring lead to be led out.

[0016] In some embodiments, the positioning structure and the radiating structure are detachably connected;

[0017] And / or, the positioning structure has a limiting portion that cooperates with the radial structure.

[0018] In some embodiments, the radiating structure includes a longitudinally elongated radiating portion; one end of the radiating portion is provided with a pointed top.

[0019] The strong field region is formed between the radiating part and the pointed tip.

[0020] In some embodiments, the radiating portion and the pointed tip are arranged flat;

[0021] And / or, the radiating portion is cylindrical and the pointed tip is conical.

[0022] An aerosol generating device is also constructed, comprising the microwave heating component described in this utility model and a microwave generating unit connected to the microwave heating component.

[0023] The aerosol generating device and microwave heating assembly of this utility model have the following beneficial effects: By setting a positioning structure in the radiation structure and positioning and installing the temperature measuring probe of the temperature measuring structure that is at least partially installed in the radiation structure through the positioning structure, the temperature measuring efficiency and accuracy can be improved, which is conducive to temperature control, and can also improve the taste of the generated aerosol and improve the user experience. Attached Figure Description

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

[0025] Figure 1 This is a partial structural schematic diagram of the microwave heating component of the aerosol generating device in some embodiments of this utility model, which heats the aerosol generating matrix.

[0026] Figure 2 yes Figure 1 The cross-sectional view shown is of a microwave heating assembly heating aerosol to generate a matrix.

[0027] Figure 3 yes Figure 2 A cross-sectional view of the microwave heating assembly shown.

[0028] Figure 4 yes Figure 3 A schematic diagram of the outer conductor unit structure of the microwave heating assembly shown.

[0029] Figure 5 yes Figure 4 A cross-sectional view of the outer conductor unit of the microwave heating assembly shown.

[0030] Figure 6 yes Figure 2 A schematic diagram of the fixed unit structure of the microwave heating assembly shown.

[0031] Figure 7 yes Figure 5 A cross-sectional view of the fixing unit of the microwave heating assembly shown.

[0032] Figure 8 yes Figure 2 A schematic diagram of the inner conductor unit and temperature measuring structure of the microwave heating assembly shown.

[0033] Figure 9 yes Figure 8 Cross-sectional view of the inner conductor unit and temperature measuring structure of the microwave heating assembly shown.

[0034] Figure 10 yes Figure 9 A schematic diagram of the combined structure of the radiation structure and the temperature measurement structure in the inner conductor unit shown.

[0035] Figure 11 yes Figure 10 A cross-sectional view showing the interaction between the radiation structure and the temperature measurement structure in the inner conductor unit shown.

[0036] Figure 12 yes Figure 11 The diagram shows the distribution of the strong field region of the radiative structure in the inner conductor unit.

[0037] Figure 13 yes Figure 11 A partial structural exploded view of the microwave heating assembly shown.

[0038] Figure 14 yes Figure 12 The diagram shows the positioning structure of the microwave heating assembly. Detailed Implementation

[0039] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0040] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0041] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0042] Figure 1 and Figure 2Some preferred embodiments of the aerosol generating device of this invention are shown. This aerosol generating device generates aerosols for user inhalation by feeding microwaves into and heating the aerosol generating matrix 100. The aerosol generating matrix 100 is detachably disposed within the aerosol generating device. In some embodiments, the aerosol generating matrix 100 is columnar; specifically, it can be cylindrical and can be a filamentous, granular, or sheet-like solid material made from plant leaves, flowers, and / or stems, and aroma components can be further added to this solid material.

[0043] like Figure 1 and Figure 2 As shown, in some embodiments, the aerosol generating device may include a housing (not shown), a microwave heating assembly, a microwave feed unit 80, and a microwave generating unit (not shown). The microwave heating assembly is housed within the housing (not shown) and is used to generate a microwave energy field within it after microwaves are introduced, thereby heating the aerosol generating matrix. The microwave feed unit 80 may be mounted on the microwave heating assembly and connected to the microwave generating unit (not shown), and can feed the microwaves generated by the microwave generating unit (not shown) into the microwave heating assembly.

[0044] like Figure 3 As shown, the microwave heating assembly may include an outer conductor unit 10, a fixing unit 20, and an inner conductor unit 30. The fixing unit 20 may be disposed in the outer conductor unit 10 for fixing the aerosol generating matrix 100. The inner conductor unit 30 is at least partially disposed in the outer conductor unit 10 and can be connected to microwaves to the outer conductor unit 10, so that a microwave forming energy field can be generated in the outer conductor unit 10.

[0045] like Figure 4 and Figure 5 As shown, in some embodiments, the outer conductor unit 10 is made of metal or other highly conductive material to confine microwave capabilities therein. In some embodiments, the outer conductor unit 10 is a cylindrical structure, which can be a regular shape, such as a cuboid or cylinder. In some embodiments, the outer conductor unit 10 can be an irregular shape. Specifically, in this embodiment, the outer conductor unit 10 is an irregular shape formed by partial outward convexity or inward concavity.

[0046] In some embodiments, the outer conductor unit 10 may include a main body 10a and an extending protrusion 10b. The main body 10a may be cylindrical, specifically, it may be generally cylindrical. One end of the main body 10a is provided with a bottom wall 11, and the other end is provided with a mounting port 12. A cavity 13 is formed on the inner side, wherein the cavity 13 is formed between the bottom wall 11 and the mounting port 12. The bottom wall 11 can be used to support the inner conductor unit 30 and contact the inner conductor unit 30 to form an ohmic contact. In some embodiments, the bottom wall 11 is provided with a through hole 111, which can be used for the inner conductor unit 30 to pass through. The through hole 111 may be located at the central axis of the cavity 13. The mounting port 12 may be coaxially arranged with the through hole 111, and it can be used to install the inner conductor unit 30 and the fixing unit 20 into the outer conductor unit 10. The cavity 13 can be used for microwave feeding. The extending protrusion 10b may be provided on one side of the main body 10a and close to the bottom wall 11. In some embodiments, the extension protrusion 10b may be integrally formed with the main body 10a. The extension protrusion 10b can be used for mounting the microwave feed unit 80. A mounting hole 14 may be provided on the extension protrusion 10b. The mounting hole 14 communicates with the cavity 13 for mounting the microwave feed unit 80. In other embodiments, the extension protrusion 10b is not limited to being integrally formed with the main body 10a; it may also be detachably assembled with the main body 10a. In some embodiments, the extension protrusion 10b may be omitted.

[0047] In some embodiments, the fixing unit 20 may be at least partially installed in the cavity 13 and may be coaxially arranged with the cavity 13. In some embodiments, the fixing unit 20 is generally cylindrical. Generally, the fixing unit 20 may be made of a low microwave loss material, such as PTFE, PEEK, ceramic, etc.

[0048] like Figures 6 to 7 As shown, in some embodiments, the fixing unit 20 may include a receiving portion 21, a limiting flange 22, and an air guide column 23. The receiving portion 21 may be generally cylindrical, with its outer diameter smaller than the inner diameter of the outer conductor unit 10. The receiving portion 21 may be coaxially arranged with the outer conductor unit 10. The limiting flange 22 may be disposed on the side wall of the receiving portion 21, and may extend circumferentially along the receiving portion 21. The limiting flange 22 may be positioned at the assembly opening 12, and may be used to limit the installation of the fixing unit 20 and the outer conductor unit 10, and facilitate the fixing of the fixing unit 20. The air guide column 23 is disposed on one side of the receiving portion 21. Specifically, in some embodiments, the air guide column 23 may extend from the limiting flange 22. A sensing airway 231 can be formed inside the air guide column 23. The end of the sensing airway 231 away from the accommodating part 21 can be connected to the airflow detection unit. The airflow of the sensing airway 231 can be sensed by the airflow detection unit, thereby realizing the counting of suction ports and facilitating temperature control.

[0049] In some embodiments, the fixing unit 20 includes a support wall 211, specifically, the support wall 211 is formed at one end of the receiving portion 21. An insertion / removal port 212 is provided at the end of the receiving portion 21 opposite to the support wall 211, the insertion / removal port 212 being used to allow the aerosol generating matrix 100 to be inserted into the receiving portion 21. An receiving cavity 213 is defined inside the receiving portion 21, the receiving cavity 213 being used to receive at least a portion of the aerosol generating matrix 100.

[0050] In some embodiments, the fixing unit 20 has a through hole 2111 communicating with the receiving cavity 213, and the through hole 2111 may be disposed on the support wall 211. In this embodiment, the through hole 2111 may be coaxially disposed with the receiving cavity 213, and it can be used for a portion of the inner conductor unit 30 to pass through. In some embodiments, the through hole 2111 may be an irregular shape, such as a non-circular shape, generally a shape formed by combining two regular shapes, such as a combination of an ellipse and a circle. In some other embodiments, the non-circular shape may also be a regular shape in which some edges are deformed. In some embodiments, the through hole 2111 may also be a regular shape, such as a circle or an ellipse.

[0051] In some embodiments, the fixing unit 20 is provided with an air guide groove 214. Specifically, the air guide groove 214 is arranged along the axial direction of the receiving portion 21 and extends from the insertion port 212 to the support wall 211. It can be used to allow external gas to enter the fixing unit 20, and an airflow channel can be formed between the air guide groove 214 and the aerosol generating matrix 100. Generally, the inner sidewall of the fixing unit 20 is provided with a plurality of protrusions 215, which are spaced apart. The gap between two adjacent protrusions 215 can form an air guide groove 214. Each protrusion 215 can extend from the insertion port 212 to the support wall 211 and can be generally L-shaped.

[0052] like Figures 8 to 9 As shown, in some embodiments, the inner conductor unit 30 may include a radiating structure 31 and an inner conductor body 32. The radiating structure 31 may be clamped and fixed to the inner conductor body 32, and may partially pass through the through-hole 2111 into the receiving cavity 213. When the aerosol generating matrix 100 is assembled with the fixing unit 20, the radiating structure 31 may be partially inserted into the aerosol generating matrix 100 and coaxially arranged with the aerosol generating matrix 100. The radiating structure 31 can generate aerosol by radiating microwaves to heat the aerosol generating matrix 100. The inner conductor body 32 may be sleeved on the outer periphery of the fixing unit 20 and may partially pass through the outer conductor unit 10. The inner conductor body 32 may contact the outer conductor unit 10 to form an ohmic contact.

[0053] like Figures 10 to 12As shown, in some embodiments, the radiating structure 31 may be columnar, specifically, it may be approximately needle-shaped, and the radiating structure 31 may be selected as a flat-tipped needle structure. Generally, the width of the flat-tipped needle is sufficient to ensure temperature measurement when in contact with the aerosol generating matrix 100, while the thinness and needle tip facilitate piercing the plug of the aerosol generating matrix 100; at the same time, the flat-tipped needle structure can avoid the problem of needle sticking after the aerosol generating matrix 100 shrinks, that is, the aerosol generating matrix 100 shrinks after heating and adheres to the outside of the radiating structure 31. In other embodiments, the radiating structure 31 is not limited to a flat-tipped needle structure; in some embodiments, the radiating structure 31 may also be a round needle structure.

[0054] In some embodiments, the radiating structure 31 may be selected from a metal material with low thermal conductivity and thin wall thickness, such as 304 or 316 stainless steel, thereby ensuring the conductivity of the radiating structure 31 and reducing thermal conduction with the inner conductor body 32.

[0055] In some embodiments, the radiating structure 31 may include a longitudinally elongated radiating portion 311. The radiating portion 311 may be inserted into the receiving cavity 213 and may be integrally inserted into the aerosol generating matrix 100. In some embodiments, the radiating portion 311 is flat, and one end of the radiating portion 311 is provided with a pointed tip 312. By providing the pointed tip 312, it is beneficial for the radiating portion 311 to pass through the plug of the aerosol generating matrix 100 and be inserted into the aerosol generating matrix 100. In some embodiments, the cross-section of the radiating portion 311 may be generally elliptical, rectangular, etc. In some embodiments, the pointed tip 312 is flat. Of course, it is understood that in some other embodiments, the radiating structure 31 may be needle-shaped, the radiating portion 311 may be cylindrical, and the pointed tip 312 may be conical, and the pointed tip 312 may be tapered away from the radiating portion 311. In some embodiments, the radiating portion 311 and the pointed tip 312 may be integrally formed. Generally, the radiating portion 311 and the pointed tip 312 may be integrally formed by injection molding or casting.

[0056] In some embodiments, the radiating structure 31 further includes a connecting portion 313. The connecting portion 313 may be disposed at one end of the radiating portion 311, and may be inserted into and clamped and fixed to the inner conductor body 32. The thickness of the connecting portion 313 may be greater than the thickness of the radiating portion 311. The cross-section of the connecting portion 313 may be approximately circular or square. Generally, the connecting portion 313 and the radiating portion 311 can be integrally formed. The radiating structure 31 may be a circular needle-shaped preform, which is flattened in the middle to form a flat radiating portion 311 and a cylindrical connecting portion 313.

[0057] In some embodiments, the radiating structure 31 is hollow. In some embodiments, one end of the radiating structure 31 is provided with an opening 3131, which may be provided at the end of the connecting portion 313 away from the tip 312.

[0058] In some embodiments, a strong field region 314 is formed near the radiating structure 31. "Near" can refer to the region adjacent to the radiating structure 31, i.e., the region with a small distance from the outer wall of the radiating structure 31. In some embodiments, this strong field region 314 is formed between the radiating portion 311 and the pointed top 312, and can be a transition region from the radiating portion 311 to the pointed top 312. This region has a strong microwave energy field, specifically as follows: Figure 12 As shown.

[0059] For example Figure 8 and Figure 9 As shown, in some embodiments, the inner conductor body 32 may include a cylindrical body 321 and a columnar body 322. The cylindrical body 321 may be sleeved on the outer periphery of a portion of the fixing unit 20, specifically, the cylindrical body 321 may be sleeved on the outer periphery of a portion of the receiving portion 21. The cylindrical body 321 may be clearance-fitted with the receiving portion 21. The columnar body 322 is disposed at one end of the cylindrical body 321 and may protrude from the outer conductor unit 10, specifically, the columnar body 322 may partially protrude from the through hole 111 of the outer conductor unit 10, and may contact the outer conductor unit 10 to form an ohmic contact. In some embodiments, the cylindrical body 321 and the columnar body 322 are integrally formed. In other embodiments, the cylindrical body 321 may be omitted, and the end wall 3211 may be the end wall of the columnar body 322 facing the fixing unit 20.

[0060] In some embodiments, the cylindrical body 321 includes an end wall 3211 and an annular wall 3212 disposed on the end wall 3211 and extending circumferentially along the end wall 3211. The end wall 3211 is disposed toward the fixing unit 20 and has a gap between it and a portion of the support wall 211. By providing this gap, the contact area between the support wall 211 and the end wall 3211 can be reduced, thereby reducing heat conduction. In some embodiments, one end of the cylindrical body 321 is provided with a mounting port 3213, which can be disposed opposite to the end wall 3211 to facilitate assembly of the cylindrical body 321 with the fixing unit 20. A through hole 3114 can be formed at the central axis of the end wall 3211, which can be used for the radiation structure 31 to pass through.

[0061] In some embodiments, the columnar body 322 may include a first columnar portion 322a and a second columnar portion 322b. One end of the first columnar portion 322a may be connected to the cylindrical body 321. The second columnar portion 322b may be connected to the end of the first columnar portion 322a away from the cylindrical body 321. In some embodiments, both the first columnar portion 322a and the second columnar portion 322b are cylindrical, and the outer diameter of the first columnar portion 322a may be larger than the outer diameter of the second columnar portion 322b. A step may be formed between the second columnar portion 322b and the first columnar portion 322a. This step may be placed on the bottom wall 11 of the outer conductor unit 10, forming a good ohmic contact with the bottom wall of the outer conductor unit 10. The second columnar portion 322b may protrude from the through hole 111, and the outer wall of the second columnar portion 322b is provided with an external thread structure. The second columnar portion 322b may be screwed to the screw connection structure 70, thereby achieving connection and fixation with the outer conductor unit 10. In some embodiments, the screw connection structure 70 can be a nut, which can be sleeved on the second columnar portion 322b and screwed into the external thread structure of the second columnar portion 322b.

[0062] In some embodiments, the inner conductor body 32 has a mounting through-hole 3221 that communicates with and extends through the entire columnar body 322 via a through-hole 3114. The mounting through-hole 3221 is located at the central axis of the inner conductor body 32. A radiating structure 31 can be mounted in the mounting through-hole 3221. A portion of the sidewall of the radiating structure 31 can contact at least a portion of the hole wall of the mounting through-hole 3221. In some embodiments, preferably, the contact between a portion of the sidewall of the radiating structure 31 and a portion of the hole wall of the mounting through-hole 3221 creates an ohmic contact between the radiating structure 31 and the inner conductor body 32, which facilitates the clamping and fixing of the radiating structure 31 onto the inner conductor body 32. A gap is left between the portion of the sidewall of the radiating structure 31 and a portion of the hole wall of the mounting through-hole 3221, meaning that the radiating structure 31 and the inner conductor body 32 are not in complete contact, thereby reducing heat conduction. Specifically, part of the sidewall of the connecting part 313 can contact part of the hole wall of the mounting through hole 3221, and the connecting part 313 can be clamped and fixed, so that the radiation structure 31 is fixedly mounted on the inner conductor body 32.

[0063] In some embodiments, the inner conductor body 32 is provided with a connection through hole 3222, which is opened on the side wall of the columnar body 322. It can be a blind hole and can be used to connect with the microwave feed unit 80.

[0064] like Figure 13 and Figure 14As shown, in some embodiments, the microwave heating assembly may further include a temperature sensing structure 40, which is at least partially installed in the radiation structure 31 and can be used to measure the temperature in the accommodating cavity 213. In some embodiments, the temperature sensing structure 40 may include a temperature probe 41 and a temperature sensing lead 42. The temperature probe 41 may be disposed in the radiation structure 31 and corresponding to the strong field region 314, thereby enabling rapid detection of the temperature at which the aerosol generating matrix 100 is heated, which is beneficial for temperature control. In some embodiments, the temperature probe 41 may be a temperature sensor. In some embodiments, one end of the temperature sensing lead 42 may be connected to the temperature probe 41, and the other end may be led out from the opening 3131 of the radiation structure 31 to connect to the main control board. There may be two temperature sensing leads 42. In some embodiments, the temperature sensing lead 42 may be an NTC temperature sensing lead.

[0065] In some embodiments, the microwave heating assembly may further include a positioning structure 50, which is at least partially disposed in the radiation structure 31 and can be used to position and install the temperature probe 41 in the strong field region 314. The positioning structure 50 can fix the temperature probe 41 in the strong field region 314, thereby ensuring the stability of the installation of the temperature probe 41 and the accuracy of temperature measurement.

[0066] In some embodiments, the positioning structure 50 and the radiation structure 31 are detachably connected, that is, by detachably setting the positioning structure 50 and the radiation structure 31, the installation of the temperature probe 41 can be facilitated.

[0067] In some embodiments, the positioning structure 50 may be longitudinally arranged, extending toward and out of the opening 3131 of the radiating structure 31. In some embodiments, the shape and size of the positioning structure 50 may be adapted to the shape and size of the radiating structure 31. In some embodiments, the portions of the positioning structure 50 corresponding to the radiating portion 311 and the pointed tip 312 may be flattened.

[0068] In some embodiments, the positioning structure 50 can be a bracket, which may include a first support portion 51 and a second support portion 52. The first support portion 51 may be correspondingly disposed with the radiating portion 311 and the pointed tip 312, and may pass through the pointed tip 312. The first support portion 51 may be plate-shaped. In other embodiments, the first support portion 51 may not be limited to being plate-shaped, and may also be cylindrical. In some embodiments, the second support portion 52 may be disposed at one end of the first support portion 51, and may be correspondingly disposed with the connecting portion 313. The second support portion 52 may be column-shaped, and its thickness may be greater than the thickness of the first support portion 51. In some embodiments, the first support portion 51 and the second support portion 52 may be an integral structure, and the first support portion 51 and the second support portion 52 may be integrally formed by injection molding.

[0069] In some embodiments, the positioning structure 50 may further include a positioning slot 511, which is disposed on one side of the first support portion 51 and may correspond to the strong field region 314. Specifically, it may be disposed towards the strong field region 314. When the temperature probe 41 is installed, it may be fixedly mounted on the positioning slot 511. In some embodiments, the positioning slot 511 has a groove 5111, which is disposed towards the inner wall of the radiation structure 31. The temperature probe 41 may protrude from the groove 5111 and contact the inner wall of the radiation structure 31. In other embodiments, the temperature probe 41 may also be flush with the plane where the groove 5111 is provided, thereby increasing the contact area between the temperature probe 41 and the inner wall of the radiation structure 31, so that the temperature probe 41 can be tightly attached to the inner wall of the radiation structure 31 after being assembled with the positioning structure 50.

[0070] In some embodiments, the positioning structure 50 has a limiting portion 53, which may be disposed at the end of the second support portion 52 away from the first support portion 51, and may cooperate with the radiation structure 31 for limiting. In some embodiments, the limiting portion 53 may be an annular flange, which may protrude radially along the second support portion 52, and its outer diameter may be slightly larger than the outer diameter of the radiation structure 31, so that the opening 3131 of the radiation structure 31 is limited, thereby realizing the installation limiting of the first support portion 51 in the radiation structure 31, thereby ensuring that the positioning slot 511 is correspondingly set with the strong field region 314.

[0071] In some embodiments, a lead wire channel 54 may be provided on the positioning structure 50. The lead wire channel 54 may be arranged along the length direction of the positioning structure 50, that is, it may extend from the first support portion 51 and the second support portion 52 to the limiting portion 53. The lead wire channel 54 may be formed by a lead wire groove formed on the side wall of the positioning structure 50, or by a lead wire through hole formed in the positioning structure 50. One end of the lead wire channel 54 may communicate with the positioning slot 511, which can be used to lead out the temperature measuring lead 42 and can prevent the temperature measuring lead 42 from contacting the inner wall of the radiation structure 31. In some embodiments, when the lead wire channel 54 is formed by a lead wire groove, the temperature measuring lead 42 may be fixed to the lead wire groove with glue after being installed in the lead wire groove, and the temperature measuring lead 42 may be isolated from the inner wall of the radiation structure 31 by the glue.

[0072] In some embodiments, the microwave heating assembly further includes a shielding cover 60 that can cover the mounting opening 12 of the outer conductor unit 10, thereby reducing microwave leakage. In some embodiments, the shielding cover 60 can be partially embedded into the outer conductor unit 10 from the mounting opening 12 and can be interference-fitted with the outer conductor unit 10, and the limiting flange 22 of the fixing unit 20 can be pressed onto the shielding cover 60.

[0073] In some embodiments, the aerosol generating device may further include an airflow detection unit (not shown), which may be in communication with the air guide column 23 and may be located on the side of the air guide column 23 away from the receiving portion 21. The airflow detection unit (not shown) can be used to sense the flow of air in the sensing airway 231 in the air guide column 23 to count the number of suctions. In some embodiments, the airflow detection unit (not shown) may be a microphone or a MEMS. During suction, a negative pressure is generated inside the sensing airway 231, which triggers the microphone or MEMS to count the number of suctions. By placing the sensing airway 231 above the outer conductor unit 10 and the shielding cover 60, the condensation of aerosol in the sensing airway 231 can be reduced, avoiding failure caused by condensate blockage of the sensing airway 231. The sensing airway 231 is located outside the cavity 13, away from the heated aerosol generating matrix 100. This avoids damage to the airflow detection unit (not shown) and other components due to excessive temperature of the sensing airway 231, and also avoids drilling holes in the outer conductor unit 10, which is beneficial for sealing the cavity 13.

[0074] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A microwave heating assembly, characterized by, include: The radiating structure (31) is hollow, and a strong field region (314) is formed near the radiating structure (31); A temperature measuring structure (40) is at least partially installed in the radiation structure (31) and includes a temperature measuring probe (41) disposed in the radiation structure (31); A positioning structure (50) is at least partially disposed in the radiation structure (31) for positioning and installing the temperature probe (41).

2. The microwave heating assembly of claim 1, wherein, The temperature measuring structure (40) is set in correspondence with the strong field zone (314).

3. The microwave heating assembly according to claim 1, characterized in that, The positioning structure (50) includes a positioning slot (511); the temperature probe (41) is installed on the positioning slot (511).

4. The microwave heating assembly according to claim 3, characterized in that, The positioning slot (511) is provided in correspondence with the strong field area (314).

5. The microwave heating assembly according to claim 3, characterized in that, The positioning slot (511) has a groove (5111) facing the inner wall of the radiation structure (31); the temperature probe (41) is flush with or protrudes from the groove (5111) and contacts the inner wall of the radiation structure (31).

6. The microwave heating assembly according to claim 1, characterized in that, One end of the radiation structure (31) is provided with an opening (3131); the positioning structure (50) extends toward the opening (3131); And / or, the temperature measuring structure (40) further includes a temperature measuring lead (42) connected to the temperature measuring probe (41); The positioning structure (50) is provided with a lead channel for the temperature measuring lead (42) to be led out.

7. The microwave heating assembly according to claim 1, characterized in that, The positioning structure (50) and the radiation structure (31) are detachably connected; And / or, the positioning structure (50) has a limiting part (53) that cooperates with the radiation structure (31).

8. The microwave heating assembly according to claim 1, characterized in that, The radiating structure (31) includes a longitudinally arranged radiating part (311); one end of the radiating part (311) is provided with a pointed top (312); The strong field region (314) is formed between the radiating portion (311) and the pointed top (312).

9. The microwave heating assembly according to claim 8, characterized in that, The radiating portion (311) and the pointed tip (312) are arranged in a flat shape; And / or, the radiating portion (311) is cylindrical and the pointed tip (312) is conical.

10. An aerosol generating device, characterized in that, It includes the microwave heating assembly as described in any one of claims 1 to 9 and the microwave generating unit connected to the microwave heating assembly.

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