Aerosol generating device and microwave heating module

Abstract

The utility model relates to an aerosol generating device and a microwave heating module. The microwave heating module comprises a microwave radiation structure, wherein at least part of the microwave radiation structure is used for being inserted into an aerosol generating product; the microwave radiation structure comprises a main body part and a tip part connected to one end of the main body part; and the main body part and the tip part are flat. According to the aerosol generating device, the plugging section of the aerosol generating device can be conveniently punctured, and meanwhile, the medium does not need to be carefully contacted, so that temperature measurement is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic atomization, and more particularly to an aerosol generating device and a microwave heating module. BACKGROUND

[0002] In the related art, the heating structure of the aerosol generating device using the microwave heating method is generally a cylindrical needle with a round head. The medium section of the current aerosol generating product has a large central aperture, and a plugging structure for improving condensation is also provided at the bottom. For the aerosol generating device using the microwave heating method, the heating structure needs to be close to the medium in the medium section to facilitate temperature measurement, which requires the radial dimension of the heating structure to be set to a large value. However, the heating structure with a large radial dimension also makes it difficult to pierce the plugging structure and extend into the aerosol generating product when the aerosol generating product is inserted, which is likely to cause damage to the heating structure. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the present application is to provide an improved aerosol generating device and microwave heating module to solve the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present application to solve the technical problem is: a microwave heating module is constructed, which includes a microwave radiation structure used at least partially for insertion into an aerosol generating product; the microwave radiation structure includes a main body portion and a tip portion connected to one end of the main body portion; the main body portion and the tip portion are flat.

[0005] In some embodiments, the main body portion and the tip portion are smoothly transitioned, and the width and / or thickness of at least a portion of the tip portion decreases from one end connected to the main body portion to an end away from the main body portion.

[0006] In some embodiments, the microwave radiation structure includes a first side and a second side opposite in the width direction, and a third side and a fourth side opposite in the thickness direction; the main body portion and the tip portion are provided with a chamfer structure at positions corresponding to the positions where the main body portion and the tip portion are adjacent to the first side and the third side, and the main body portion and the tip portion are provided with a chamfer structure at positions corresponding to the positions where the main body portion and the tip portion are adjacent to the second side and the fourth side.

[0007] In some embodiments, the depth of the chamfer structure on the main body portion is greater than the depth of the chamfer structure on the tip portion.

[0008] In some embodiments, the side surfaces of the tip portion corresponding to the third side and the fourth side are respectively a plane, or an arc surface curved outward in the length direction.

[0009] And / or, the side surface of the tip portion corresponding to the first side and the second side is respectively a plane, or an arc surface which is curved outward relative to the length direction.

[0010] In some embodiments, the microwave radiation structure further comprises a connecting portion connected to an end of the main body portion away from the tip portion; the thickness of the connecting portion is greater than or equal to the thickness of the main body portion, and the width of the connecting portion is less than or equal to the width of the main body portion.

[0011] In some embodiments, the taper of the tip portion in the width direction of the microwave radiation structure is less than or equal to 120°;

[0012] And / or, the taper of the tip portion in the thickness direction is less than or equal to 100°.

[0013] In some embodiments, the taper of the tip portion in the width direction of the microwave radiation structure is less than or equal to 60°;

[0014] And / or, the taper of the tip portion in the thickness direction is less than or equal to 45°.

[0015] In some embodiments, the length of the tip portion in the length direction of the microwave radiation structure is greater than or equal to 1mm, less than or equal to 12mm, or the length of the medium segment of the aerosol generating article.

[0016] In some embodiments, the length of the tip portion in the length direction of the microwave radiation structure is greater than or equal to 3mm, less than or equal to 6mm.

[0017] In some embodiments, the width of the main body portion is greater than or equal to 50% of the inner diameter of the aerosol generating article, and less than or equal to 130% of the inner diameter of the aerosol generating article.

[0018] And / or, the thickness of the main body portion is less than or equal to 80% of the inner diameter of the aerosol generating article.

[0019] In some embodiments, the width of the main body portion is greater than or equal to 60% of the inner diameter of the aerosol generating article, and less than or equal to 120% of the inner diameter of the aerosol generating article.

[0020] And / or, the thickness of the main body portion is less than or equal to 40% of the inner diameter of the aerosol generating article.

[0021] In some embodiments, further comprising an outer conductor unit, an inner side of the outer conductor unit is formed with a cavity open at one end, and at least part of the microwave radiation structure extends into the cavity.

[0022] In some embodiments, further comprising impedance matching structures respectively ohmically connected with the outer conductor unit and the microwave radiation structure, the impedance matching structures are at least partially arranged in the cavity and formed with through holes; a multi-claw clamping structure clamping and limiting the microwave radiation structure is arranged in the through holes.

[0023] In some embodiments, further comprising a microwave shielding unit preventing microwave leakage, the microwave shielding unit is arranged at the cavity opening end of the outer conductor unit.

[0024] In some embodiments, further comprising a fixing unit for inserting at least part of the aerosol generating article; the fixing unit is at least partially arranged in the cavity and is defined with a receiving cavity, the tip part and at least part of the main body part extend into the receiving cavity.

[0025] In some embodiments, a connecting hole communicating with the receiving cavity is arranged on the fixing unit, the microwave radiation structure is arranged in the connecting hole, and a sealing member is arranged between the microwave radiation structure and the hole wall of the connecting hole.

[0026] In some embodiments, a sensing air duct for communicating with a gas flow sensing unit is defined on the fixing unit, the sensing air duct is located outside the cavity and communicates with the receiving cavity.

[0027] In some embodiments, the microwave heating module further comprises a temperature measuring film, the temperature measuring film is at least partially arranged on the surface of at least part of the main body part.

[0028] An aerosol generating device is constructed, comprising the microwave heating module of any one of the preceding embodiments.

[0029] The technical solutions constructed in the present application have at least the following beneficial effects:

[0030] By arranging the tip part, the microwave radiation structure can smoothly pierce the blocking section during the process of being inserted into the aerosol generating article, the force of the blocking section on the microwave radiation structure during the piercing process is reduced, and the risk of damage to the microwave radiation structure during the insertion process is reduced.

[0031] By arranging the main body part and the tip part in a flat structure, the force of the blocking section on the microwave radiation structure during the piercing process is further reduced, which is more conducive to piercing the blocking section. The flat structure can allow the two sides in the width direction to contact the medium without any concerns, thereby achieving temperature measurement. BRIEF DESCRIPTION OF DRAWINGS

[0032] The present application will be further described below with reference to the drawings and embodiments, in which:

[0033] Figure 1 is an assembly relationship diagram of the aerosol generating article and part of the aerosol generating device in the first embodiment of the present application;

[0034] Figure 2 is Figure 1 is a cross-sectional structure diagram of the aerosol generating article and part of the aerosol generating device after assembly in the first embodiment of the present application;

[0035] Figure 3 is Figure 1 is a cross-sectional structure diagram of the aerosol generating article and part of the aerosol generating device after assembly in the first embodiment of the present application from another angle;

[0036] Figure 4 is Figure 2 is a structure diagram of the microwave radiation structure in the first embodiment of the present application;

[0037] Figure 5 is Figure 4 is a structure diagram of the microwave radiation structure in the first embodiment of the present application from another angle;

[0038] Figure 6 is Figure 4 is a structure diagram of the microwave radiation structure in the first embodiment of the present application from yet another angle;

[0039] Figure 7 is Figure 4 is a structure diagram of the microwave radiation structure in the first embodiment of the present application from still another angle;

[0040] Figure 8 is Figure 2 is a structure diagram of the inner conductor unit in the first embodiment of the present application;

[0041] Figure 9 is Figure 2 is a structure diagram of the fixing unit in the first embodiment of the present application;

[0042] Figure 10 is a structure diagram of the tip portion and part of the main body portion in the microwave radiation structure in the second embodiment of the present application;

[0043] Figure 11 is a structure diagram of the tip portion and part of the main body portion in the microwave radiation structure in the third embodiment of the present application;

[0044] Figure 12 is a structure diagram of the tip portion and part of the main body portion in the microwave radiation structure in the fourth embodiment of the present application;

[0045] Figure 13 is a structure diagram of the tip portion and part of the main body portion in the microwave radiation structure in the fifth embodiment of the present application;

[0046] Figure 14is a structural schematic diagram of a microwave radiation structure in the sixth embodiment of the present application.

[0047] Figure 15 is a structural schematic diagram of a microwave radiation structure in the seventh embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to have a clearer understanding of the technical features, objects and effects of the present application, the specific embodiments of the present application will be described in detail with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0049] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "up", "down", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship commonly used when the product of the present application is used, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0050] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0051] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature can be "above" the second feature, which can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature can be "below" the second feature, which can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0053] Figures 1 to 3 In addition to the microwave heating module 1 in the first embodiment of the present application, it can be applied to an aerosol generating device, and by feeding microwaves to heat the aerosol generating medium, aerosol is generated for the user to use.

[0054] As shown in Figure 2 and Figure 3 , the microwave heating module 1 includes an outer conductor unit 10, an inner conductor unit 20, and a fixing unit 30. The fixing unit 30 can be defined with a receiving cavity 310, and at least part of the aerosol generating article 3 can be detachably inserted into the receiving cavity 310. The outer conductor unit 10 can be defined with a cavity 110 with one end open, and at least part of the inner conductor unit 20 and at least part of the fixing unit 30 can be arranged in the cavity 110. The outer conductor unit 10 can be made of metal or other high-conductivity material, which is used to confine the microwave radiation. The inner conductor unit 20 can at least partially extend into the fixing unit 30, and by feeding microwaves, an energy field is generated in the region defined by the outer conductor unit 10, thereby achieving heating of the aerosol generating article 3.

[0055] It should be understood that, as described in Figure 2 and Figure 3 , the aerosol generating article 3 can be in a columnar shape, including a medium segment 301 and a blocking segment 302 coaxially connected. The aerosol generating medium is contained in the medium segment 301. The blocking segment 302 is located at the end of the aerosol generating article 3, which is used to block the medium segment 301 to prevent leakage of condensate and other stains during the puffing process. The medium segment 301 can be coaxially formed with a receiving channel 303.

[0056] The aerosol generating medium can be a solid material in the form of a filament, a particle, or a sheet made of leaves, flowers, and / or stems of plants, and further aroma components, propylene glycol, glycerol, or water, etc. can be added to the solid material.

[0057] The inner conductor unit 20 can include a microwave radiation structure 21, which can be arranged on the fixing unit 30 to at least partially extend into the receiving cavity 310, and is arranged in the receiving channel 303 of the aerosol generating article 3 to feed microwaves to build a radiation field and heat the medium. As shown inFigure 4 As shown, the microwave radiation structure 21 is longitudinally arranged, including a main body part 211 and a tip part 212 connected to one end of the main body part 211. Among them, the tip part 212 and at least part of the main body part 211 are located in the accommodating cavity 310, both of which are flat.

[0058] The present application can facilitate the microwave radiation structure 21 to smoothly pierce the blocking section 302 into the accommodating channel 303 during the process of inserting into the aerosol generating article 3, reduce the force of the blocking section 302 on the microwave radiation structure 21 during the piercing process, and reduce the risk of damage to the microwave radiation structure 21 during the insertion process.

[0059] The present application can further reduce the force of the blocking section 302 on the microwave radiation structure 21 during the piercing process by setting the main body part 211 and the tip part 212 as a flat structure, which is more conducive to piercing the blocking section 302. At the same time, the flat structure can make the two sides in the width direction contact the medium without worrying about the temperature measurement.

[0060] At the same time, the flat structure of the microwave radiation structure 21 can improve the microwave distribution difference in the accommodating cavity 310. When the aerosol generating article 3 is heated by microwaves, a larger temperature gradient difference can be constructed, which is conducive to improving the consistency of aerosol production at different times and improving the consistency of user smoking taste.

[0061] It should be understood that the aerosol generating medium will shrink and deform during heating. For microwave heating type aerosol generating devices, the cylindrical needle-shaped microwave radiation structure in the related art is easy to make the aerosol generating medium wind around the circumference of the microwave radiation structure. During the heating process, the aerosol generating medium that winds around the microwave radiation structure shrinks and deforms, which will further tightly fit the circumference of the microwave radiation structure, causing the needle holding phenomenon. This makes the impurities of the aerosol generating medium after atomization more likely to adhere to the surface of the microwave radiation structure, causing cleaning problems, and affecting the service life and user experience of the aerosol generating device.

[0062] The present application sets the main body part 211 and the tip part 212 as a flat structure, and the flat microwave radiation structure 21 has a longer circumferential length under the condition of a certain cross section. The aerosol generating medium is less likely to wind around the circumference of the microwave radiation structure 21, so even if it shrinks and deforms, it is difficult to cause the needle holding phenomenon, reducing the adhesion of impurities on the surface of the microwave radiation structure 21, thereby improving the service life and user experience.

[0063] It should be understood that, in the plane perpendicular to the length direction of the microwave radiation structure 21, there are width direction and thickness direction perpendicular to each other. The tip portion 212 and the main body portion 211 are flat, and it can be understood that the length of the tip portion 212 and the main body portion 211 along the width direction is greater than the length along the thickness direction.

[0064] As shown in Figure 4 , the microwave radiation structure 21 can include a first end E and a second end F opposite in the length direction. The tip portion 212 is located at the first end E of the microwave radiation structure 21, and the second end F of the microwave radiation structure 21 is located outside the accommodating cavity 310.

[0065] In some embodiments, the main body portion 211 can be smoothly connected with the tip portion 212. It is now defined that the end of the tip portion 212 away from the main body portion 211 along the length direction of the microwave radiation structure 211 is the tip end, and the end connected with the main body portion 211 is the connecting end. Then, the width and thickness of the tip portion 212 gradually decrease from the connecting end to the tip end.

[0066] By setting the tip portion to be smoothly connected with the main body portion 211, the penetration of the microwave radiation structure 21 can be further facilitated, and the adhesion of the aerosol generating medium on the surface of the microwave radiation structure 21 can be reduced.

[0067] Specifically, referring to Figure 5 , the microwave radiation structure 21 can further include a first side A and a second side B opposite in the width direction, and a third side C and a fourth side D opposite in the thickness direction. The first side A, the third side C, the second side B, and the fourth side D are sequentially and adjacently distributed on the circumference of the microwave radiation structure 21.

[0068] Among them, the side surface of the main body portion 211 corresponding to the third side C and the side surface corresponding to the fourth side D are arranged in parallel and spaced apart. The side surface of the main body portion 211 corresponding to the first side A and the side surface corresponding to the second side B are also arranged in parallel and spaced apart.

[0069] The side surface of the tip portion 212 corresponding to the first side A is smoothly connected with the side surface of the main body portion 211 corresponding to the first side A, and the length of the side surface along the thickness direction of the microwave radiation structure 21 gradually decreases from the connecting end to the tip end. The side surface of the tip portion 212 corresponding to the second side B is smoothly connected with the side surface of the main body portion 211 corresponding to the second side B, and the length of the side surface along the thickness direction of the microwave radiation structure 21 gradually decreases from the connecting end to the tip end. At the same time, the spacing distance between the side surface of the tip portion 212 corresponding to the first side A and the side surface corresponding to the second side B gradually decreases from the end connected with the main body portion 211 to the end away from the main body portion 211, and is connected at the end away from the main body portion 211.

[0070] The side corresponding to the third side C of the tip portion 212 and the side corresponding to the third side C of the main body portion 211 are smoothly connected, and the length of the side in the width direction of the microwave radiation structure 21 gradually decreases from the connection end to the tip end. The side corresponding to the fourth side D of the tip portion 212 and the side corresponding to the fourth side D of the main body portion 211 are also smoothly connected, and the length of the side in the width direction of the microwave radiation structure 21 gradually decreases from the connection end to the tip end. At the same time, the distance between the side corresponding to the third side C and the side corresponding to the fourth side D of the tip portion 212 gradually decreases from the end connected to the main body portion 211 to the end away from the main body portion 211, and the two sides are connected at the end away from the main body portion 211.

[0071] Of course, in other optional embodiments, the tip portion 212 can gradually decrease in width or thickness direction from the connection end to the tip end, respectively.

[0072] In some embodiments, the positions corresponding to the abutting positions of the main body portion 211 and the tip portion 212 and the first side A and the third side C are respectively provided with chamfer structures. The positions corresponding to the abutting positions of the main body portion 211 and the tip portion 212 and the second side B and the fourth side D are also respectively provided with chamfer structures.

[0073] It should be understood that the chamfer structure can be understood as a transition surface structure of the connecting surface of the adjacent connecting surfaces. The chamfer structure is arranged between the adjacent connecting surfaces and has a certain angle with each connecting surface to achieve smooth transition between the adjacent connecting surfaces.

[0074] Specifically, as shown in Figures 5 to 7 The connecting positions of the side corresponding to the first side A and the side corresponding to the third side C of the main body portion 211, the connecting positions of the side corresponding to the first side A and the side corresponding to the fourth side D, the connecting positions of the side corresponding to the second side B and the side corresponding to the third side C, and the connecting positions of the side corresponding to the second side B and the side corresponding to the fourth side D are respectively provided with first chamfers 215. The connecting positions of the side corresponding to the first side A and the side corresponding to the third side C of the tip portion 212, the connecting positions of the side corresponding to the first side A and the side corresponding to the fourth side D, the connecting positions of the side corresponding to the second side B and the side corresponding to the third side C, and the connecting positions of the side corresponding to the second side B and the side corresponding to the fourth side D are respectively provided with second chamfers 216.

[0075] By arranging the first chamfer 215 and the second chamfer 216, the smoothness of the outer contour of the microwave radiation structure 21 can be further improved, thereby reducing the adhesion of impurities on the outer surface of the microwave radiation structure 21.

[0076] It should be understood that the first chamfer 215 and the second chamfer 216 can be rounded or straight.

[0077] Further, as shown in Figure 4 , the depth of the first chamfer 215 can be greater than the depth of the second chamfer 216.

[0078] For example, referring to Figure 5 and Figure 7 , the depth of the first chamfer 215 is set such that the side surfaces of the main body portion 211 corresponding to the first side A and the second side B are relatively narrow, and thus the cross-sectional shape of the main body portion 211 corresponding to the first side A and the second side B in a direction perpendicular to the length direction of the microwave radiation structure 21 is generally semicircular.

[0079] As shown in Figure 7 , in some embodiments, the side surfaces of the tip portion 212 corresponding to the first side A, the second side B, the third side C, and the fourth side D are respectively planar.

[0080] As shown in Figures 4 to 7 , in some embodiments, the tip portion 212 can further include a tip 2120 at the tip end. The tip 2120 is generally arc-shaped and connected to the side surfaces of the tip portion 212 corresponding to the first side A, the second side B, the third side C, and the fourth side D, which can optimize the distribution of microwave energy and improve heating efficiency.

[0081] Specifically, the tip 2120 is generally flat and semicircular or fan-shaped, which can include an end surface, a side surface corresponding to the third side C, and a side surface corresponding to the fourth side D. The side surface corresponding to the third side C and the side surface corresponding to the fourth side D are arranged in parallel and are respectively fan-shaped or semicircular planar surfaces, and are smoothly connected to the side surfaces of the tip portion 212 corresponding to the third side C and the fourth side D. The end surface is connected between the side surface corresponding to the third side C and the side surface corresponding to the fourth side D, and chamfers are formed at the connection points.

[0082] In other optional embodiments, the side surface corresponding to the third side C and the side surface corresponding to the fourth side D of the tip 2120 can also be provided as outwardly convex arc-shaped surface structures, so that the tip 2120 is generally semispherical, semi-ellipsoidal, or other shapes.

[0083] As shown in Figure 6 , in some embodiments, the length L of the tip portion 212 in the length direction of the microwave radiation structure 21 is greater than or equal to 1 mm and less than or equal to 12 mm or the length of the medium segment 301 of the aerosol generating article 3. Further, the length L of the tip portion 212 in the length direction of the microwave radiation structure 21 can be greater than or equal to 3 mm and less than or equal to 6 mm.

[0084] For example, its length L can be set to 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4mm, 4.2mm, 4.4mm, 4.6mm, 4.8mm, 5mm, 5.2mm, 5.4mm, 5.6mm, 5.8mm, etc. Of course, its length L can also be set to 1.5mm, 2mm, 2.5mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, or any other value within this range.

[0085] In some embodiments, the taper T1 of the tip 212 in the width direction of the microwave radiating structure 21 is less than or equal to 120°. Further, the taper T1 may be less than or equal to 60°.

[0086] For example, its taper T1 can be set to 40°, 45°, 50°, 55°, 35°, 32°, 30°, 28°, 26°, 24°, 20°, etc. Of course, its taper T1 can also be set to 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115°, etc., or any other value within this range.

[0087] It should be understood that when the tip 212 corresponds to the side surface corresponding to the first side A and the side surface corresponding to the second side B, respectively, for example... Figure 6 When the plane is shown, the taper T1 of the tip 212 in the width direction of the microwave radiation structure 21 can be understood as the angle between the tip 212 and the side corresponding to the first side A and the side corresponding to the second side B.

[0088] When the tip 212 corresponds to the side surface corresponding to the first side A and the side surface corresponding to the second side B respectively, for example Figure 10 When the curved surface is shown, the taper T1 of the tip 212 in the width direction of the microwave radiation structure 21 can be understood as the angle between the lines connecting the tip 212 to the side corresponding to the first side A and the side corresponding to the second side B, and the connecting end of each side. Alternatively, it can be understood as the angle between the tangent of the tip 212 to the connecting end of the tip 2120, and the side corresponding to the first side A and the side corresponding to the second side B. No specific limitation is made here.

[0089] like Figure 7 As shown, in some embodiments, the taper T2 of the tip 212 in the thickness direction of the microwave radiating structure 21 is less than or equal to 100°. Further, the taper T2 may be less than or equal to 45°.

[0090] For example, its taper T2 can be set to 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, etc., and can also be set to 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, 95°, etc., or any other value within this range.

[0091] It should be understood that when the tip 212 corresponds to the side surface corresponding to the third side C and the side surface corresponding to the fourth side D respectively, for example... Figure 7 When the plane is shown, the taper T2 of the tip 212 in the thickness direction of the microwave radiation structure 21 can be understood as the angle between the tip 212 and the side corresponding to the third side C and the side corresponding to the fourth side D.

[0092] When the tip 212 and the side corresponding to the third side C and the side corresponding to the fourth side D are both arc-shaped surfaces, the taper T2 of the tip 212 in the thickness direction of the microwave radiation structure 21 can be understood as the angle between the lines connecting the tip and the connecting end of the tip 212 and the side corresponding to the third side C and the side corresponding to the fourth side D. Alternatively, it can be understood as the angle between the tangents of the tip 212 and the side corresponding to the third side C and the side corresponding to the fourth side D and the connecting end of the tip 2120. No specific limitation is made here.

[0093] like Figure 6 As shown, in some embodiments, the width M of the main body 211 (that is, the length along the width direction of the microwave radiation structure 21) is greater than or equal to 50% of the inner diameter of the aerosol generating article 3 and less than or equal to 130% of the inner diameter of the aerosol generating article 3. Further, its width M can be set to be greater than or equal to 60% of the inner diameter of the aerosol generating article 3 and less than or equal to 120% of its inner diameter.

[0094] For example, its width M can be set to 65%, 70%, 75%, 80%, 82%, 84%, 86%, 88%, 85%, 90%, 95%, 96%, 97%, 98%, 99%, 100%, 101%, 102%, 103%, 104%, 105%, 110%, 115%, 92%, 94%, 106%, 108%, 112%, 114%, 116%, 118%, etc., of the inner diameter of the aerosol-generating article 3. Of course, it can also be set to 52%, 54%, 56%, 58%, 122%, 124%, 126%, 128%, etc., or any other value within this range.

[0095] It should be understood that the aerosol generating article 3 can have a certain deformation capability. When the width of the main body 211 is greater than the inner diameter of the aerosol generating article 3, the aerosol generating article 3 can accommodate the main body 211 through deformation.

[0096] like Figure 7 As shown, in some embodiments, the thickness N of the main body 211 (i.e., the length along the thickness direction of the microwave radiating structure 21) is less than or equal to 80% of the inner diameter of the aerosol generating article 3. Further, its thickness N can be less than or equal to 40% of the inner diameter of the aerosol generating article.

[0097] For example, the thickness N can be set to 38%, 36%, 34%, 32%, 30%, 28%, 26%, 24%, 22%, 20%, 18%, 16%, 14%, 12%, 10% of the inner diameter of the aerosol-generated article 3. Of course, it can also be set to 45%, 50%, 55%, 60%, 65%, 70%, 75%, or any other value within this range.

[0098] It should be understood that a temperature measuring structure (not shown in the figure) is provided inside the main body 211, so the thickness of the main body 211 needs to be greater than the packaging size of the temperature measuring structure.

[0099] It should be understood that this temperature sensing structure can be electrically connected to the temperature sensing circuit in the control module of the aerosol generating device to transmit the detected temperature to the control module, facilitating flexible control of the heating temperature. This temperature sensing structure can be implemented using existing technologies such as temperature-sensing resistors and temperature sensors, and no specific limitations are specified here.

[0100] It should be understood that the inner diameter of the aerosol generating article 3 can be understood as the aperture of the accommodating channel 303 of the aerosol generating article 3.

[0101] This application adjusts the width and thickness of the main body 211 to make the microwave radiation structure 21 flat, which is conducive to bringing about a greater difference in microwave distribution. In turn, when the aerosol generating product 3 is microwave heated, a greater temperature gradient difference is constructed, which is conducive to improving the consistency of aerosol production at different times and improving the consistency of the user's inhalation taste.

[0102] In some embodiments, the microwave radiation structure 21 may further include a connecting portion 213, which may be connected to the end of the main body 211 away from the tip portion 212, and may be used for installation and positioning within the microwave heating module 1. The thickness of the connecting portion 213 may be greater than the thickness of the main body 211, and the width may be less than the width of the main body 211, to facilitate installation and positioning.

[0103] For example Figure 4 As shown, the connecting part 213 can be cylindrical. Of course, it can also be set as a rectangular column, a polygonal column, or other shapes.

[0104] In some embodiments, a transition portion 214 is further provided between the connecting portion 213 and the main body portion 211. Its side is set as an arc-shaped structure along the length direction of the microwave radiation structure 21, and its two ends smoothly transition with the connecting portion 213 and the main body portion 211, respectively.

[0105] like Figure 2 and Figure 3 As shown, the outer conductor unit 10 may include a cylindrical body 11, which defines a cavity 110 and has a third end 10A and a fourth end 10B opposite to the third end 10A. The first end 10B is located at the open end of the cavity 110, and the fourth end 10B is a relatively closed end.

[0106] The fourth end 10B of the cylindrical body 11 is provided with a first end wall 111, on which a through hole 1110 is provided. The inner conductor unit 20 can be installed by passing through the through hole 1110. Specifically, at least a portion of the microwave radiation structure 21 can extend from the through hole 1110 into the cavity 110.

[0107] Specifically, the cylinder 11 is cylindrical, and the outline of the cavity 110 it defines is also cylindrical.

[0108] Of course, in some other alternative embodiments, the cylinder 11 can also be configured as a polygonal column, a cylindrical shape, an elliptical column, an irregular shape, or other shapes.

[0109] In some embodiments, the inner conductor unit 20 may further include an impedance matching structure 22. A via 220 may be formed on the impedance matching structure 22, and a microwave radiating structure 21 may be disposed within the via 220, forming an ohmic contact between the two, so that the microwave radiating structure 21 can feed microwaves into the impedance matching structure 22.

[0110] Impedance matching structure 22 can be disposed on the first end wall 111, partly passing through the through hole 1110 and partly located in the cavity 110. Impedance matching structure 22 can form an ohmic contact with the outer conductor unit 10 through the first end wall 111 to ensure normal microwave feeding into the outer conductor unit 10.

[0111] Specifically, the impedance matching structure 22 can be coaxially arranged with the cylinder 11. The through hole 220 passes through the axis of the impedance matching structure 22, so that the microwave radiation structure 21 and the impedance matching structure 22 are also coaxially arranged. The portion of the impedance matching structure 22 located inside the cavity 110 can be formed with a stepped surface to abut against the first end wall 111 surrounding the inner side of the through hole 1110, thereby limiting it axially and preventing it from coming out.

[0112] In some embodiments, the microwave heating module 1 may further include a limiting member 40, which may be disposed on the portion of the impedance matching structure 22 located outside the cavity 110 and abut against the first end wall 111 surrounding the outer side of the through hole 1110, thereby cooperating with the stepped surface on the impedance matching structure 22 for limiting, and at the same time ensuring that the impedance matching structure 22 can make a stable ohmic connection with the outer conductor unit 10.

[0113] The portion of the impedance matching structure 22 that passes through the through hole 1110 and the portion that is located outside the cavity 110 have a threaded structure on their outer periphery. The limiting member 40 can be a nut, and the limiting member 40 and the impedance matching structure 22 can be connected by threads to achieve positioning of the impedance matching structure 22.

[0114] See also Figure 8 In some embodiments, the inner conductor unit 20 may further include a multi-claw clamping structure 23, which may be disposed within the via 220 and located between the via wall of the via 220 and the microwave radiation structure 21, for clamping the microwave radiation structure 21 and realizing the positioning between the microwave radiation structure 21 and the impedance matching structure 22.

[0115] Furthermore, the connecting portion 213 of the microwave radiation structure 21 can be correspondingly provided with the multi-claw clamping structure 23 to facilitate clamping.

[0116] It should be understood that the multi-claw clamping structure 23 can be made of conductive materials such as metal to facilitate the ohmic connection between the microwave radiation structure 21 and the impedance matching structure 22. Alternatively, the multi-claw clamping structure 23 can also be a rib, protrusion, or other protrusion integrally formed on the wall of the through hole 220 of the impedance matching structure 22.

[0117] The number of claws in the multi-claw clamping structure 23 can be two, three, four, five, etc., and they can be arranged circumferentially along the hole wall of the through hole 220. While clamping the microwave radiation structure 21, it can also reduce the contact area between the structure and the microwave radiation structure 21 and reduce energy loss.

[0118] The multi-claw clamping structure 23 can be positioned within the through hole 220, allowing it to be located inside the cavity 110. Alternatively, it can be located outside the cavity 110 or inside the through hole 1110.

[0119] For example Figure 2 and Figure 3As shown, in some embodiments, the portion of the impedance matching structure 22 located within the cavity 110 can be partially fitted around the outer periphery of the fixing unit 30, for mounting the fixing unit 30 within the cavity 110. The fixing unit 30, within the cavity 110, can be located at the end of the impedance matching structure 22 near the third end 10A. One end of the accommodating cavity 310 is open, and its open end is connected to the outside via the third end 10A of the outer conductor unit 10, facilitating the insertion and removal of the aerosol-generated article 3.

[0120] The fixing unit 30 may include a fixing body 31, which is a cylindrical structure with one open end, at least partially coaxially located within the cavity 110, and defines the receiving cavity 310. The fixing body 31 may include a tubular sidewall 312 and a second endwall 311 away from the open end. One end of the sidewall 312 is connected circumferentially to the second endwall 311, and the second endwall 311 has a connecting hole 3110 communicating with the receiving cavity 310. The microwave radiation structure 21 may pass through the connecting hole 3110 and extend from the connecting hole 3110 into the receiving cavity 310.

[0121] Specifically, the connecting hole 3110 can be coaxially arranged with the accommodating cavity 310 and coaxially communicated with the through hole 220 to facilitate the insertion of the microwave radiation structure 21. The shape of the accommodating cavity 310 is adapted to the shape of the aerosol generating article 3, for example in... Figure 2 and Figure 3 In the embodiments shown, all are cylindrical. The microwave radiation structure 21 is coaxially arranged with the fixing body 31 to improve the circumferential consistency of the temperature field.

[0122] Of course, the aerosol generating product 3 can also be configured as a polygonal column, an elliptical column, an irregular column, or other shapes. The shape of the accommodating cavity 310 can correspond to that of the aerosol generating product 3, or it can be configured as a different shape from the aerosol generating product 3.

[0123] In some embodiments, at least one spacing structure (not shown in the figure) may be provided between the impedance matching structure 22 and the fixing unit 30, which can reduce the contact area between the impedance matching structure 22 and the fixing unit 30, thereby reducing heat transfer.

[0124] Specifically, the spacer structure can be an annular gasket, protrusions and / or ribs provided on the outer side of the fixing unit 30, protrusions and / or ribs provided on the contact end face of the impedance matching structure 22, heat insulation sleeve, heat insulation layer, etc., without specific limitations.

[0125] The main body 211, tip 212, and transition 214 of the microwave radiation structure 21 are all located within the accommodating cavity 310. One end of the connecting part 213, which is connected to the transition 214, passes through the connecting hole 3110.

[0126] In some embodiments, to ensure the relative sealing of the accommodating cavity 310, a sealing element (not shown in the figure) is also provided between the wall of the connecting hole 3110 and the microwave radiation structure 21. The sealing element can prevent impurities such as condensate and stains generated during the heating process of the aerosol generating product 3 from seeping out from the gap between the wall of the connecting hole 3110 and the microwave radiation structure 21, thereby preventing contamination of other components of the aerosol generating device and ensuring the stability of its function.

[0127] Furthermore, to ensure the airtightness of the cavity 110 and improve the sealing effect, a sealing element can also be provided between the hole wall of the through hole 220 and the microwave radiation structure 21.

[0128] Specifically, the sealing element can be a silicone ring or other sealing ring that can achieve a sealing effect, or it can be a sealant that fills the gap, etc., without specific limitations.

[0129] like Figure 3 and Figure 9 As shown, in some embodiments, at least one first air guide groove 3120 is formed on the inner surface of the sidewall 312, which extends along the axial direction of the fixing body 31. At least one second air guide groove 3112 is formed on the side of the second endwall 311 facing the accommodating cavity 310, and the second air guide groove 3112 communicates with the first air guide groove 3120 for air guiding.

[0130] When the aerosol generating product 3 is inserted into the accommodating cavity 310, the walls of the first air guide groove 3120 and the second air guide groove 3112, which are connected to each other, define an interconnected airflow channel with the side wall and end wall of the aerosol generating product 3, respectively. This airflow channel can communicate with the air guide inside the aerosol generating product 3 and is connected to the outside through the opening end of the accommodating cavity 310 for the user to perform suction.

[0131] Specifically, the inner surface of the sidewall 312 is recessed inward at uniform intervals along the circumference to form a plurality of first air guide grooves 3120. The side of the second endwall 311 facing the accommodating cavity 310 is provided with a plurality of supporting protrusions 3111, which together with the second endwall 311 define a plurality of second air guide grooves 3112.

[0132] like Figure 2 and Figure 3 As shown, in some embodiments, the microwave heating module 1 may further include a microwave shielding unit 50, which may be disposed at the third end 10A of the outer conductor unit 10 to cooperate with the outer conductor unit 10 and prevent microwave leakage from the opening end of the cavity 110.

[0133] Furthermore, the fixing unit 30 may also include a support portion 32, which may protrude from the end of the fixing body 31 near the opening of the accommodating cavity 310 and be located outside the cavity 110, supported by the third end 10A of the cylindrical body 11. The microwave shielding unit 50 is annular, disposed between the support portion 32 and the third end 10A of the cylindrical body 11, and partially extends into the cavity 110, sandwiched between the fixing body 31 and the cylindrical body 11, to improve the shielding effect.

[0134] It should be understood that the support part 32 can be integrally formed with the fixed body 31, or it can be connected by a connecting structure.

[0135] Specifically, the microwave shielding unit 50 can be a microwave absorbing structure made of a material with strong microwave absorption properties. The material can include metal, water, silicon carbide, metal mesh with a pore size of 3 mm or less, etc.

[0136] It should be understood that the outer conductor unit 10 can be made of metallic materials or other highly conductive materials. For example, the outer conductor unit 10 can be made of gold, silver, copper, aluminum, iron, gold-containing alloys, aluminum-containing alloys, copper-containing alloys, iron-containing alloys, stainless steel, etc. Alternatively, the outer conductor unit 10 may also include a substrate layer made of a non-metallic material and a metallic coating applied to the inner surface of the substrate layer. No specific limitations are made here.

[0137] The inner conductor unit 20 can be made of a metallic material or other highly conductive material. For example, the inner conductor unit 20 can be made of gold, silver, copper, aluminum, iron, gold-containing alloys, aluminum-containing alloys, copper-containing alloys, iron-containing alloys, stainless steel, etc. Alternatively, the inner conductor unit 20 may also include a non-metallic substrate and a metallic coating applied to the non-metallic substrate, such as gold-plated stainless steel. No specific limitations are made herein.

[0138] The fixing unit 30 can be made of materials such as lossless or low-loss dielectrics. For example, the fixing unit 30 may be made of plastic, Teflon, PEEK (polyetheretherketone), PTFE (polytetrafluoroethylene), quartz, alumina ceramic, or various composite wave-transparent materials. No specific limitations are made here.

[0139] This application also provides an aerosol generating device, which may include the microwave heating module 1 in any of the foregoing embodiments.

[0140] In some embodiments, the aerosol generating device may further include a microwave feed module 2, which can be connected to a microwave sound generating unit to feed microwaves into the microwave heating module 1.

[0141] like Figure 2 and Figure 3As shown, the outer conductor unit 10 may further include a mounting portion 12, which is disposed outside the cylinder 11 and defines a mounting through hole 120 communicating with the cavity 110. The microwave feed module 2 can extend into the cavity 110 through the mounting through hole 120 and be ohmically connected to the inner conductor unit 20 to realize microwave feed.

[0142] Specifically, the mounting part 12 can be located at the fourth end 10B of the cylinder 11.

[0143] In some embodiments, the aerosol generating device may further include an airflow sensing module (not shown in the figure) for sensing changes in airflow and counting the number of suction ports, so as to further adjust the temperature curve according to the suction situation, thereby improving the user's suction experience.

[0144] like Figure 3 As shown, the fixed unit 30 can be defined with a sensing airway 330 that communicates with the first air guide groove 3120 and the second air guide groove 3112 within the accommodating cavity 310. The airflow sensing module can communicate with the sensing airway 330. During the user's inhalation, the airflow channel generates airflow following the user's inhalation, thereby causing a negative pressure change at the sensing airway 330. The airflow sensing module can calculate the number of inhalations by sensing the negative pressure change within the sensing airway 330. Furthermore, the aerosol generating device can precisely control the microwave heating temperature by adjusting the number of inhalations, thereby achieving a better taste.

[0145] Specifically, the fixing unit 30 may further include a tubular air guide section 33, which may protrude from the fixing body 31 and communicate with the accommodating cavity 310 through a channel on the fixing body 31. The channel on the fixing body 31 and the internal space of the air guide section 33 together constitute the sensing airway 330. The airflow sensing module may be located at the end of the air guide section 33 furthest from the fixing body 31.

[0146] In some embodiments, the sensing airway 330 may be located outside the cavity 110. That is, the air guide 33 may be located at the opening end of the fixing body 31 and outside the cavity 110.

[0147] By placing the sensing airway 330 outside the cavity 110, the gas sensing unit located at the end of the gas guide 33 can be kept away from the microwave radiation structure 21, thus preventing the sensing airway 330 from overheating and damaging the gas sensing unit. Simultaneously, since the air inlet of the airflow channel is located at the opening of the fixed body 31 and is far from the sealing section 302 of the aerosol generation product 3, this arrangement also prevents the condensation of aerosol within the sensing airway 330, thereby preventing the sensing airway 330 from being blocked. Furthermore, since the fixed body 31 is partially located inside the cavity 110, placing the sensing airway 330 outside the cavity 110 prevents the gas guide 33 from penetrating the cylinder 11, thus ensuring the sealing of the cylinder 11.

[0148] Specifically, the air guide 33 is located approximately at the position of the support 32. The two are integrally formed and are both located on the side of the microwave shielding unit 50 away from the cylinder 11.

[0149] Of course, in some other alternative embodiments, the air guide 33 may also be connected to the side where the second end wall 311 of the fixing body 31 is located, and pass through the cylinder 11.

[0150] It should be understood that the airflow sensing module can use existing microphones or MEMS sensors that can detect changes in negative pressure, and no specific limitations are made here.

[0151] Figure 10 The diagram shows a portion of the microwave radiating structure 21G in the second embodiment of this application. The main difference between this structure and the microwave radiating structure 21 in the first embodiment is that, in this embodiment, the sides of the tip 212G corresponding to the first side A and the second side B are arc-shaped surfaces. The two arc-shaped surfaces can be slightly convex outwards relative to each other along the length of the microwave radiating structure 21G to form slightly curved arc-shaped surfaces.

[0152] In some other alternative embodiments, the end faces of the tip 212G corresponding to the third side C and the fourth side D may also be bent outward relative to each other along the length direction of the microwave radiating structure 21G.

[0153] Figure 11 The third embodiment of the present application shows a portion of the microwave radiation structure 21K. The main difference between this structure and the microwave radiation structure 21 in the first embodiment is that, in this embodiment, the tip 212K has a portion of the section with the same width and thickness from the connection end to the tip end, while the remaining section has a reduced width and / or thickness.

[0154] like Figure 11As shown, along the axial direction of the microwave radiation structure 21K, the tip 212K can be divided into a first segment 2121K and a second segment 2122K. The second segment 2122K is axially disposed between the first segment 2121K and the main body 211K, and the tip 2120K is located at the end of the first segment 2121K away from the second segment 2122K.

[0155] The width and thickness of the second segment 2122K gradually decrease from the end connected to the main body 211K to the first segment connected to the first segment 2121K.

[0156] Of course, in some other embodiments, the first segment 2121K may also be disposed axially between the second segment 2122K and the main body 211K, and the pointed end 2120K may be disposed at the end of the second segment 2122K away from the first segment 2121K.

[0157] In some other embodiments, the second segment 2122K may be configured such that, from the end connected to the main body 211K to the first segment connected to the first segment 2121K, one of its width and thickness decreases. The first segment 2121K may also be configured such that, from the end connected to the second segment 2122K to the end away from the second segment 2122K, the other of its width and thickness decreases.

[0158] Figure 12 The fourth embodiment of the present application shows a portion of the microwave radiation structure 21P, which differs from the microwave radiation structure 21 in the first embodiment in that, in this embodiment, the tip 212P, from the connecting end to the tip end, has one sidewall of opposite sides in the width direction parallel to the axis of the microwave radiation structure 21P, while the other sidewall is inclined.

[0159] For example, in Figure 12 In the embodiment shown, the side of the tip portion 212P corresponding to the first side A and the side of the main body portion 211P corresponding to the first side A are arranged and extend parallel to the axis of the microwave radiation structure 21P.

[0160] The side of the tip 212P corresponding to the second side B is inclined in its extension direction. This side has an angle with the axis of the microwave radiation structure 21P. One end of this side is connected to the side of the main body 211P corresponding to the second side B along the axial direction, and the other end extends towards the side of the tip 212P corresponding to the first side A.

[0161] Of course, in some other embodiments, the side of the tip 212P corresponding to the second side B can be arranged parallel to the axis of the microwave radiation structure 21P, and the side of the tip 212P corresponding to the second side A can be arranged at an angle.

[0162] It should be understood that, in this embodiment, the thickness of the tip 212P from the connecting end to the tip end may remain constant or gradually decrease, and no specific limitation is made here.

[0163] Figure 13 The fifth embodiment of the present application shows a portion of the microwave radiation structure 21Q. The main difference between this structure and the microwave radiation structure 21 in the first embodiment is that, in this embodiment, from the connecting end to the pointed end, one sidewall of the tip 212Q in the thickness direction is parallel to the axis of the microwave radiation structure 21Q, while the other sidewall is inclined.

[0164] For example, in Figure 13 In the embodiment shown, the side of the tip portion 212Q corresponding to the third side C and the side of the main body portion 211Q corresponding to the third side C are arranged and extend parallel to the axis of the microwave radiation structure 21Q.

[0165] The side of the tip 212Q corresponding to the fourth side D is inclined in its extension direction. There is a gap between this side and the axis of the microwave radiation structure 21Q. One end of this side is connected to the side of the main body 211Q corresponding to the fourth side D in the axial direction, and the other end extends towards the side of the tip 212Q corresponding to the third side C.

[0166] Of course, in some other embodiments, the side of the tip 212Q corresponding to the fourth side D can be arranged parallel to the axis of the microwave radiation structure 21Q, and the side of the tip 212Q corresponding to the third side C can be arranged at an angle.

[0167] It should be understood that, in this embodiment, the width of the tip 212Q from the connecting end to the pointed end may remain constant or gradually decrease, and no specific limitation is made here.

[0168] Figure 14 The microwave radiation structure 21R in the sixth embodiment of this application is shown. The main difference between it and the microwave radiation structure 21 in the first embodiment is that, in this embodiment, the temperature measuring structure includes at least one temperature measuring film 24R, which is disposed on the surface of the microwave radiation structure 21R for detecting temperature so that the aerosol generating device can control the temperature.

[0169] It is important to understand that in related technologies, the temperature measuring structure is generally located within the microwave radiation structure 21R. During the temperature measurement process, the detected temperature is determined by the aerosol-generated product (…). Figure 14 The medium (not shown) is conducted to the temperature measuring structure via the microwave radiation structure 21R. This relatively long temperature conduction path can easily lead to a significant difference between the temperature detected by the reagent in the temperature measuring structure and the actual temperature of the medium, which is not conducive to the precise temperature control of the aerosol generation device.

[0170] In this embodiment, the temperature measuring structure is set as a temperature measuring film 24R, which is placed on the surface of the microwave radiation structure 21R. During the temperature measurement process, the detected temperature is directly conducted from the medium of the aerosol generating product to the temperature measuring film 24R. This arrangement shortens the temperature conduction path, thereby reducing the difference between the actual temperature detected by the temperature measuring film 24R and the actual temperature of the medium. This facilitates more accurate and rapid temperature measurement, which in turn helps the aerosol generating device to accurately control the temperature.

[0171] The temperature measuring film 24R can be at least partially disposed on at least part of the main body 211R of the microwave radiation structure 21R, so that it is at least partially located in the high-temperature region in contact with the medium, thereby improving the accuracy and response speed of temperature monitoring.

[0172] Specifically, the temperature-sensing film 24R can be a longitudinally elongated rectangular block, arranged along the length of the microwave radiation structure 21R. There can be two of them, respectively positioned on opposite sides of the thickness of the microwave radiation structure 21R.

[0173] In some other alternative embodiments, the temperature measuring film 24R may also be disposed on at least one of the main body 211R, the tip 212R, the connecting part 213R, and the transition part 214R of the microwave radiation structure 21R.

[0174] In other optional embodiments, the temperature-sensing film 24R can also be configured as various shapes such as ellipse, polygon, circle, and irregular shape, and its shape can be adjusted according to the manufacturing process. The temperature-sensing film 24R can also be disposed on opposite sides in the width direction of the microwave radiation structure 21R, or on any side in the circumferential direction, or on any adjacent two or three sides, etc. Alternatively, the temperature-sensing film 24R can also be arranged in various cylindrical shapes and distributed in the circumferential direction of the microwave radiation structure 21R.

[0175] It should be understood that the temperature sensing film 24R can be implemented using existing technologies such as PTC sensors (temperature sensors based on the positive temperature coefficient effect). Specifically, it can be made into thin-film temperature sensors using alloy materials such as platinum (Pt), platinum-ruthenium (Pt-Ru), and silver-palladium (Ag-Pd), which will not be elaborated further here.

[0176] In some embodiments, an insulating layer (not shown in the figure) is also provided between the microwave radiation structure 21R and the temperature measuring film 24R to insulate the microwave radiation structure 21R and the temperature measuring film 24R and prevent short circuits from contacting the inner conductor unit.

[0177] Specifically, the insulating layer may be located only at the position where the temperature measuring film 24R overlaps with the microwave radiation structure 21R, or it may extend beyond the portion covered by the temperature measuring film 24R, or it may completely cover the outer surface of the microwave radiation structure 21R. No specific limitations are made here.

[0178] It should be understood that when the insulating layer fully covers the outer surface of the microwave radiating structure 21R, it can reserve space to allow for the microwave radiating structure 21R to interact with the impedance matching structure. Figure 14 Ohmic connection (not shown in the image).

[0179] Furthermore, the insulating layer can also fully cover the surface of the temperature sensing film 24R to improve the insulation effect and prevent the temperature sensing film 24R from short-circuiting with the impedance matching structure.

[0180] Of course, if the insulating layer is only placed between the surfaces of the temperature measuring film 24R and the microwave radiation structure 21R that are in contact, the structure of the temperature measuring film 24R can be adjusted to reserve space to avoid the impedance matching structure, so as to avoid short circuit when in contact with it.

[0181] In some embodiments, a protective layer (not shown in the figure) may be provided on the surface of the temperature measuring film 24R away from the microwave radiation structure 21R to protect the temperature measuring film 24R from corrosion and damage by the aerosol generated by the medium.

[0182] The protective layer can be made of materials such as glass glaze or inorganic coating, and no specific limitation is made here.

[0183] The protective layer may be applied only to the surface of the temperature measuring film 24R that is away from the microwave radiation structure 21R, or it may be applied to the outer surface of the overall structure after the temperature measuring film 24R and the microwave radiation structure 21R are combined.

[0184] Figure 15 The microwave radiation structure 21S in the seventh embodiment of this application is shown. The main difference between it and the microwave radiation structure 21 in the first embodiment is that, in this embodiment, the microwave radiation structure 21S is arranged in a flat shape.

[0185] Specifically, the width of the connecting portion 213S is greater than its thickness, and the width of the transition portion 214S is greater than its thickness. For example, the cross-section of the connecting portion 213S and the transition portion 214S perpendicular to the axis can be consistent with that of the main body portion 211S, and the three are connected in sequence to form a flat columnar structure with the same shape at each position along the axial direction.

[0186] Of course, the connecting portion 213S and / or the transition portion 214S can also be configured as flat structures of different shapes. That is, the width of the connecting portion 213S and / or the width of the transition portion 214S can be different from the width of the main body portion 211S, and the thickness of the connecting portion 213S and / or the thickness of the transition portion 214S can be different from the thickness of the main body portion 211S.

[0187] Understandably, the above-mentioned technical features can be used in any combination without restriction.

[0188] The above embodiments merely illustrate specific implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application's patent. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of this application, and can also make several modifications and improvements, all of which fall within the protection scope of this application. Therefore, any equivalent transformations and modifications made within the scope of the claims of this application should be covered by the claims of this application.

Claims

1. A microwave heating module, characterized in that, The invention includes at least a portion of a microwave radiation structure for insertion into an aerosol-generating article; the microwave radiation structure includes a main body and a tip connected to one end of the main body; the main body and the tip are flat.

2. The microwave heating module according to claim 1, characterized in that, The main body and the tip transition smoothly, and the width and / or thickness of at least a portion of the tip decreases from the end connected to the main body to the end away from the main body.

3. The microwave heating module according to claim 1, characterized in that, The microwave radiating structure includes a first side and a second side opposite to each other in the width direction, and a third side and a fourth side opposite to each other in the thickness direction; the main body and the tip are provided with chamfered structures at positions corresponding to the first side and the third side, and the main body and the tip are provided with chamfered structures at positions corresponding to the second side and the fourth side.

4. The microwave heating module according to claim 3, characterized in that, The depth of the chamfered structure on the main body is greater than the depth of the chamfered structure on the tip.

5. The microwave heating module according to claim 3, characterized in that, The side surfaces corresponding to the tip and the third and fourth sides are either planes or arc-shaped surfaces that curve outwards relative to each other along the length direction. And / or, the sides of the tip corresponding to the first side and the second side are respectively planes or arc-shaped surfaces that curve outward relative to each other along the length direction.

6. The microwave heating module according to claim 1, characterized in that, The microwave radiation structure further includes a connecting portion, which is connected to the end of the main body away from the tip; the thickness of the connecting portion is greater than or equal to the thickness of the main body, and the width is less than or equal to the width of the main body.

7. The microwave heating module according to claim 1, characterized in that, The taper of the tip over the width of the microwave radiation structure is less than or equal to 120°; And / or, the taper of the tip in the thickness direction is less than or equal to 100°.

8. The microwave heating module according to claim 1, characterized in that, The taper of the tip over the width of the microwave radiating structure is less than or equal to 60°; And / or, the taper of the tip in the thickness direction is less than or equal to 45°.

9. The microwave heating module according to claim 1, characterized in that, The length of the tip along the length direction of the microwave radiation structure is greater than or equal to 1 mm and less than or equal to 12 mm or the length of the medium segment of the aerosol-generated product.

10. The microwave heating module according to claim 1, characterized in that, The length of the tip portion along the length direction of the microwave radiation structure is greater than or equal to 3 mm and less than or equal to 6 mm.

11. The microwave heating module according to claim 1, characterized in that, The width of the main body is greater than or equal to 50% of the inner diameter of the aerosol-generating product and less than or equal to 130% of the inner diameter of the aerosol-generating product. And / or, the thickness of the main body is less than or equal to 80% of the inner diameter of the aerosol-generating article.

12. The microwave heating module according to claim 1, characterized in that, The width of the main body is greater than or equal to 60% of the inner diameter of the aerosol-generating product and less than or equal to 120% of the inner diameter of the aerosol-generating product. And / or, the thickness of the main body is less than or equal to 40% of the inner diameter of the aerosol-generating article.

13. The microwave heating module according to any one of claims 1 to 12, characterized in that, It also includes an outer conductor unit, the inner side of which forms a cavity with an opening at one end, and at least a portion of the microwave radiating structure extends into the cavity.

14. The microwave heating module according to claim 13, characterized in that, It also includes an impedance matching structure that is ohmically connected to the outer conductor unit and the microwave radiation structure respectively. The impedance matching structure is at least partially disposed in the cavity and forms a through hole. A multi-claw clamping structure for clamping and limiting the microwave radiation structure is disposed in the through hole.

15. The microwave heating module according to claim 13, characterized in that, It also includes a microwave shielding unit to prevent microwave leakage, the microwave shielding unit being disposed at the cavity opening end of the outer conductor unit.

16. The microwave heating module according to claim 13, characterized in that, It also includes a fixing unit for inserting at least a portion of the aerosol-generating article; the fixing unit is at least partially disposed within the cavity and defines a receiving cavity, the tip portion and at least a portion of the main body portion extending into the receiving cavity.

17. The microwave heating module according to claim 16, characterized in that, The fixing unit is provided with a connection hole that communicates with the accommodating cavity. The microwave radiation structure passes through the connection hole, and a sealing element is provided between the microwave radiation structure and the hole wall of the connection hole.

18. The microwave heating module according to claim 16, characterized in that, The fixed unit is defined with a sensing air passage for connecting the airflow sensing unit. The sensing air passage is located outside the cavity and is connected to the accommodating cavity.

19. The microwave heating module according to any one of claims 1 to 12, characterized in that, The microwave heating module also includes a temperature measuring film, which is at least partially disposed on the surface of at least a portion of the main body.

20. An aerosol generating device, characterized in that, Includes the microwave heating module as described in any one of claims 1 to 19.

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