Aerosol-generating device

Abstract

The invention relates to an aerosol generating device comprising an outer conductor having a cavity, and a bottom end and a top end arranged oppositely, the top end being provided with a communication port communicating with the cavity; the inner conductor is contained in the cavity, one end of the inner conductor is connected to the bottom end in a matched mode, the other end of the inner conductor extends towards the top end and is spaced from the top end, a resonant cavity is defined between the outer conductor and the inner conductor, and an atomization area is formed between the inner conductor and the top end; and the wave scattering structure is arranged at one end, facing the communication port, of the inner conductor, and / or the wave scattering structure is arranged at the edge of one side, facing the inner conductor, of the communication port. According to the aerosol generating device, the electric field intensity of the central area in the aerosol generating substrate tends to be consistent with the electric field intensity of the peripheral area, so that the heating temperature of the central area of the aerosol generating substrate is increased.

Description

Technical Field

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

[0002] Aerosol is a colloidal dispersion system formed by small solid or liquid particles dispersed and suspended in a gas medium. Since aerosol can be absorbed by the human body through the respiratory system, it provides users with a new alternative absorption method. An aerosol generating device refers to a device that forms an aerosol by heating or ultrasound from a stored atomizable medium. Atomizable media include liquid, gel, paste or solid aerosol generating matrices. Atomizing these media can deliver inhalable aerosols to users, replacing conventional product forms and absorption methods.

[0003] Microwave heating is a heating technology that uses microwave radiation to atomize a medium, causing the atomized medium to generate heat and temperature through its own dielectric loss to produce an aerosol. It has the characteristics of immediacy, integrity, and selectivity. Since microwave heating utilizes the heated substance to absorb microwaves and generate heat through internal molecular losses, no separate heating element is required.

[0004] However, in the existing aerosol generating devices using microwave heating, the energy fed by the microwave generator is transferred from the periphery to the center of the aerosol generating substrate. During this transfer process, the energy gradually weakens, resulting in a higher temperature at the periphery of the aerosol generating substrate and a lower temperature at the center, thereby causing the periphery of the aerosol generating substrate to be burnt but the center of the aerosol generating substrate is not fully heated, thereby affecting the amount of aerosol generated and the taste. Summary of the invention

[0005] Based on this, it is necessary to provide an aerosol generating device to address the problem of uneven temperature field formed by microwave heating.

[0006] An aerosol generating device, comprising:

[0007] The outer conductor has a cavity and a bottom end and a top end that are oppositely disposed, and the top end is provided with a communication port that communicates with the cavity;

[0008] an inner conductor housed in the cavity, one end of the inner conductor being matched to the bottom end, the other end of the inner conductor extending toward the top end and spaced from the top end, a resonance cavity being defined between the outer conductor and the inner conductor, and an atomization area being formed between the inner conductor and the top end; and

[0009] A wave scattering structure, wherein the wave scattering structure is arranged at one end of the inner conductor facing the connecting port, and / or the wave scattering structure is arranged at a side edge of the connecting port facing the inner conductor.

[0010] In one embodiment, the cross-sectional area of ​​the wave-scattering structure perpendicular to the central axis of the inner conductor is smaller than the cross-sectional area of ​​the inner conductor perpendicular to its own central axis.

[0011] In one embodiment, an area enclosed by an outer contour line of a cross section of the wave dispersion structure perpendicular to the central axis of the inner conductor is smaller than an area enclosed by an outer contour line of a cross section of the inner conductor perpendicular to its own central axis.

[0012] In one embodiment, the wave scattering structure is constructed as a closed ring structure.

[0013] In one embodiment, the closed annular structure is arranged to close inwardly.

[0014] In one of the embodiments, the cross-sectional area of ​​the closed annular structure perpendicular to the central axis of the inner conductor gradually decreases along the closing direction.

[0015] In one of the embodiments, the wave scattering structure includes at least one wave scattering unit, and the wave scattering unit is protruding from the edge of the inner conductor or the connecting hole.

[0016] In one of the embodiments, the wave scattering structure includes a plurality of wave scattering units, and all of the wave scattering units are arranged along the circumference of the inner conductor or the circumference of the communication port.

[0017] In one embodiment, all the wave scattering units are spaced and arranged equidistantly along the circumference of the inner conductor or the circumference of the communication opening.

[0018] In one embodiment, all of the wave-scattering units are inclined toward an inwardly converging direction.

[0019] In one embodiment, the cross-sectional area of ​​each of the wave-scattering units perpendicular to the central axis of the inner conductor gradually decreases along the extension direction of the inner conductor toward the top end; or

[0020] The cross-sectional area of ​​each of the wave-scattering units perpendicular to the central axis of the inner conductor gradually decreases along the top end in the extending direction toward the inner conductor.

[0021] In one embodiment, each of the wave scattering units has a bottom surface connected to the inner conductor or the top end, a top surface arranged opposite to the bottom surface, and a side surface connected between the bottom surface and the top surface;

[0022] Wherein, the bottom surface is an annular sector, and the top surface is a rectangle or an isosceles trapezoid.

[0023] In one embodiment, the scattering structure includes a first scattering structure and a second scattering structure arranged opposite to each other;

[0024] The first wave-scattering structure is arranged on an end surface of the inner conductor facing the top end, and the first wave-scattering structure includes a plurality of first wave-scattering units arranged in sequence along the circumference of the inner conductor;

[0025] The second wave scattering structure is arranged on a side of the top end facing the inner conductor, and the second wave scattering structure includes a plurality of second wave scattering units sequentially arranged along the circumference of the communication port.

[0026] In one embodiment, the number of the first scattering units and the number of the second scattering units are the same;

[0027] In the axial direction of the inner conductor, at least part of the first scattering units and the second scattering units are aligned one by one; or

[0028] In the axial direction of the inner conductor, at least part of the first scattering units and all of the second scattering units are respectively arranged in a staggered manner.

[0029] In one embodiment, the number of the first scattering units and the number of the second scattering units are different;

[0030] In the axial direction of the outer conductor, there is at least one of the scattering elements aligned with one of the second scattering elements.

[0031] In one of the embodiments, the wave-scattering structure includes a sawtooth structure arranged along the circumference of the inner conductor and / or the communication port.

[0032] In one of the embodiments, each tooth of the sawtooth structure is inclined toward the central axis of the inner conductor.

[0033] In one embodiment, the number of teeth of the sawtooth structure is 20-40; or

[0034] The vertex angle of the outer side surface of each tooth of the sawtooth structure facing away from the central axis of the inner conductor is 15°-25°; or

[0035] The vertex angle of the inner side surface of each tooth of the sawtooth structure facing the central axis of the inner conductor is 15°-25°; or

[0036] The top angle of each tooth of the sawtooth structure facing the side surface of the adjacent tooth is 5°-10°.

[0037] In the above-mentioned aerosol generating device, the energy fed into the resonant cavity by the microwave generating unit is transmitted along the resonant cavity to the side where the upper cover is located. After the energy reaches the scattering structure, it forms electromagnetic radiation and generates electromagnetic waves. The scattering structure plays a role similar to that of an antenna to scatter the electromagnetic waves, thereby enhancing the radiation intensity of the central area of ​​the aerosol generating matrix, making the electric field intensity of the central area of ​​the aerosol generating matrix tend to be consistent with the electric field intensity of the peripheral area, thereby increasing the heating temperature of the central area of ​​the aerosol generating matrix, ensuring the uniformity of the heating temperature field of the aerosol generating matrix, and effectively preventing the peripheral area of ​​the aerosol generating matrix from being burnt while the central area is not fully heated, thereby improving the smoking taste and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 Schematic diagram of the structure of an aerosol generating device according to an embodiment of the present application.

[0039] Figure 2 Schematic diagram of the internal structure of an aerosol generating device according to an embodiment of the present application.

[0040] Figure 3 Schematic diagram of the structure of the inner conductor of the aerosol generating device according to one embodiment of the present application.

[0041] Figure 4 Schematic diagram of the internal structure of an aerosol generating device according to an embodiment of the present application.

[0042] Figure 5 This is a schematic diagram of the internal structure of an aerosol generating device according to another embodiment of the present application.

[0043] Figure 6 for Figure 5 Schematic diagram of the structure of the inner conductor of the aerosol generating device shown.

[0044] Figure 7 for Figure 5 A schematic structural diagram of the upper cover of the aerosol generating device shown.

[0045] Figure 8 for Figure 6 An enlarged schematic diagram of point A of the inner conductor is shown.

[0046] Description of reference numerals:

[0047] 100. aerosol generating device; 110. outer conductor; 112. bottom wall of outer conductor; 114. side wall of outer conductor; 116. top wall of outer conductor; 116a. connecting port; 120. inner conductor; 130. resonant cavity; 140. upper cover; 141. insertion channel; 150. microwave generating unit; 160. wave scattering structure; 161. wave scattering unit; 1612. top surface; 1614. side surface; 200. aerosol generating matrix. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full 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 violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0049] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0050] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0052] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0054] See also Figure 1 In an aerosol generating device 100 provided in one embodiment of the present application, a columnar aerosol generating substrate 200 can be inserted into one end of the aerosol generating device 100, and the aerosol generating device 100 can generate microwaves to atomize the aerosol generating substrate 200 to generate an aerosol for a user to take.

[0055] In some embodiments, the aerosol generating substrate 200 includes a substrate body and a coating layer coated on the outside of the substrate body. The substrate body can be a solid in the form of crushed, granulated, powdered, granular, strip or sheet. The coating layer is formed by a coating material, and the coating layer is coated on the outside of the substrate body to keep the aerosol generating substrate 200 in a certain shape.

[0056] like Figures 1 to 3 As shown, the aerosol generating device 100 includes an outer conductor 110, an inner conductor 120, an upper cover 140, a microwave generating unit 150 and a pushing member (not shown).

[0057] The outer conductor 110 is a hollow cylindrical structure, including an outer conductor bottom wall 112, an outer conductor side wall 114, and an outer conductor top wall 116. The outer conductor side wall 114 extends from the edge of the outer conductor bottom wall 112 in the same direction and surrounds the outer conductor bottom wall 112 in the circumferential direction. The outer conductor top wall 116 is arranged on the side of the outer conductor side wall 114 away from the outer conductor bottom wall 112. In this way, the outer conductor bottom wall 112, the outer conductor side wall 114, and the outer conductor top wall 116 together form a cavity. The outer conductor bottom wall 112 forms the bottom end of the outer conductor 110, and the outer conductor top wall 116 forms the top end of the outer conductor 110. The bottom end and the top end are arranged opposite to each other in the axial direction of the outer conductor 110, and the top end is provided with a communication port 116a connected to the cavity.

[0058] Furthermore, a first mounting hole is provided at the center of the outer conductor bottom wall 112, and the first mounting hole penetrates the outer conductor bottom wall 112 along the thickness direction of the outer conductor bottom wall 112, and is used to fix the inner conductor 120. A second mounting hole is provided at the edge of the outer conductor bottom wall 112, and the second mounting hole penetrates the outer conductor bottom wall 112 along the thickness direction of the outer conductor bottom wall 112, and is used to install the microwave generating unit 150.

[0059] The inner conductor 120 is a hollow cylindrical structure, the outer diameter of the inner conductor 120 is smaller than the inner diameter of the outer conductor 110, the inner conductor 120 is accommodated in the outer conductor 110 and is coaxially arranged with the outer conductor 110, one end of the inner conductor 120 is matched with the bottom end of the inner conductor 120, the other end of the inner conductor 120 extends toward the top end of the outer conductor 110, and maintains a certain distance from the top end, for example, 0.5mm-5mm, and the end face of the inner conductor 120 facing the top end of the outer conductor 110 is in a circular ring shape. Specifically, one end of the inner conductor 120 is inserted into the first mounting hole on the bottom wall 112 of the outer conductor, and is fixed by a fastener such as a sheet nut, and can also be connected by other methods such as welding and threaded connection.

[0060] The upper cover 140 is a hollow rotating body structure. The upper cover 140 is matched to the top of the outer conductor 110 and is coaxially arranged with the outer conductor 110. An insertion channel 1412 connected to the resonant cavity 130 is formed in the upper cover 140. The inner diameter of the insertion channel 1412 is the same as the inner diameter of the communication port 116a. One end of the aerosol generating matrix 200 can pass through the insertion channel 1412 and the communication port 116a and extend into the inner conductor 120. In this way, the outer conductor 110, the inner conductor 120 and the upper cover 140 define a resonant cavity 130.

[0061] In some embodiments, the upper cover 140 forms the outer conductor top wall 116 of the outer conductor 110 , and the upper cover 140 is threadedly connected to the outer conductor side wall 114 . It is understandable that the upper cover 140 can also be pressed against the top surface of the outer conductor side wall 114 .

[0062] The microwave generating unit 150 may be a coaxial connector, one end of the microwave generating unit 150 extends through the second mounting hole of the outer conductor bottom wall 112 into the resonant cavity 130, and the other end of the microwave generating unit 150 extends out of the outer conductor bottom wall 112 to connect with an external microwave source. The energy generated by the microwave source is fed into the resonant cavity 130 through the microwave generating unit 150, and then the aerosol generating matrix 200 between the top end of the outer conductor 110 and the inner conductor 120 is heated and atomized.

[0063] One end of the pushing member extends into the inner conductor 120 along the axial direction of the inner conductor 120, and can reciprocate in the axial direction in the inner conductor 120, thereby pushing the aerosol generating matrix 200 to move along the axial direction of the inner conductor 120. Different parts of the aerosol generating matrix 200 successively enter the area between the top of the inner conductor 120 and the outer conductor 110 to be atomized by microwaves. This area can also be called an atomization area, or a heating area.

[0064] In order to improve the uniformity of the electric field strength between the top ends of the inner conductor 120 and the outer conductor 110, the aerosol generating device 100 also includes a wave scattering structure 160, which is arranged at one end of the inner conductor 120 facing the connecting port 116a of the outer conductor 110, and / or the wave scattering structure 160 is arranged at a side edge of the connecting port 116a of the outer conductor 110 facing the inner conductor 120.

[0065] In this way, the energy fed into the resonant cavity 130 by the microwave generating unit 150 is transmitted along the resonant cavity 130 to the side where the upper cover 140 is located. After the energy reaches the scattering structure 160, it forms electromagnetic radiation and generates electromagnetic waves. The scattering structure 160 plays a role similar to an antenna to scatter the electromagnetic waves, thereby enhancing the radiation intensity of the central area of ​​the aerosol generating matrix 200, making the electric field strength of the central area of ​​the aerosol generating matrix 200 consistent with the electric field strength of the surrounding area, thereby increasing the temperature of the central area of ​​the aerosol generating matrix 200, ensuring the uniformity of the heating temperature field of the aerosol generating matrix 200, and effectively preventing the peripheral area of ​​the aerosol generating matrix 200 from being burnt while the central area is not fully heated, thereby improving the smoking taste and enhancing the user experience.

[0066] In some embodiments, the cross-sectional area of ​​the scattering structure 160 perpendicular to the central axis of the inner conductor 120 is smaller than the cross-sectional area of ​​the inner conductor 120 perpendicular to its own central axis, thereby scattering electromagnetic waves.

[0067] In other embodiments, the area enclosed by the outer contour line of the cross section of the scattering structure 160 perpendicular to the central axis of the inner conductor 120 is smaller than the area enclosed by the outer contour line of the cross section of the inner conductor 120 perpendicular to its own central axis, thereby scattering electromagnetic waves inward.

[0068] like Figure 2 and Figure 3 As shown, in some embodiments, the wave dispersion structure 160 is configured as a closed annular structure. Specifically, when the wave dispersion structure 160 is provided on the inner conductor 120, the wave dispersion structure 160 is a closed annular structure arranged along the circumference of the inner conductor 120. When the wave dispersion structure 160 is provided on the outer conductor 110, the wave dispersion structure 160 is a closed annular structure surrounding the communication port 116a along the circumferential direction. As a preferred embodiment, the cross section of the wave dispersion structure 160 perpendicular to the central axis of the inner conductor 120 is in the shape of a circular ring.

[0069] Furthermore, the closed annular structure formed by the wave scattering structure 160 is arranged to close inwardly, so that the electromagnetic waves are scattered more inwardly. Specifically, when the wave scattering structure 160 is arranged on the inner conductor 120, the closed annular structure formed by it is arranged to close inwardly from the inner conductor 120 to the communication port 116a. When the wave scattering structure 160 is arranged on the outer conductor 110, the closed annular structure formed by it is arranged to close inwardly from the top of the outer conductor 110 to the inner conductor 120.

[0070] Furthermore, the cross-sectional area of ​​the closed annular structure formed by the wave dispersion structure 160 perpendicular to the central axis of the inner conductor 120 gradually decreases along the closing direction to concentrate energy. Specifically, when the wave dispersion structure 160 is disposed on the inner conductor 120, the cross-sectional area of ​​the closed annular structure formed by it perpendicular to the central axis of the inner conductor 120 gradually decreases from the inner conductor 120 toward the communication port 116a. When the wave dispersion structure 160 is disposed on the outer conductor 110, the cross-sectional area of ​​the closed annular structure formed by it perpendicular to the central axis of the inner conductor 120 gradually decreases from the top of the outer conductor 110 toward the inner conductor 120.

[0071] like Figures 4 to 7 As shown, in some other embodiments, the wave scattering structure 160 includes at least one wave scattering unit 161, and the wave scattering unit 161 is protruded from the edge of the inner conductor 120 or the communication port 116a.

[0072] Specifically, in some embodiments, the scattering structure 160 includes a plurality of scattering units 161, all of which are sequentially arranged along the circumference of the inner conductor 120 or the circumference of the communication port 116a, and each of the scattering units 161 has the same shape. Specifically, when the scattering structure 160 is provided on the inner conductor 120, all of the scattering units 161 provided on the inner conductor 120 are sequentially arranged along the circumference of the inner conductor 120. When the scattering structure 160 is provided on the outer conductor 110, all of the scattering units 161 provided on the outer conductor 110 are sequentially arranged along the circumference of the communication port 116a.

[0073] Preferably, all the scattering units 161 of each scattering structure 160 are spaced and arranged equidistantly along the circumference of the inner conductor 120 or the circumference of the communication opening 116a, and each scattering structure 160 includes 20-40 scattering units 161, preferably 30. It can be understood that the number of scattering units 161 and the distance between adjacent scattering units 161 can be set as required to meet the requirements of the resonant frequency value and have higher heating uniformity.

[0074] Furthermore, all the scattering units 161 are inclined in the direction of inward convergence so that the electromagnetic waves are scattered more inward. Specifically, when the scattering structure 160 is provided on the inner conductor 120, all the scattering units 161 are inclined in the direction of inward convergence from the inner conductor 120 to the communication port 116a. When the scattering structure 160 is provided on the outer conductor 110, all the scattering units 161 are inclined in the direction of inward convergence from the communication port 116a to the inner conductor 120.

[0075] Furthermore, when the scattering structure 160 is disposed on the outer conductor 110, the cross-sectional area of ​​each scattering unit 161 perpendicular to the central axis of the inner conductor 120 gradually decreases along the extension direction of the inner conductor 120 toward the top. When the scattering structure 160 is disposed on the outer conductor 110, the cross-sectional area of ​​each scattering unit 161 perpendicular to the central axis of the inner conductor 120 gradually decreases along the extension direction of the inner conductor 120 toward the top.

[0076] Please combine Figure 8 As shown, in some specific embodiments, the wave scattering structure 160 includes a sawtooth structure arranged along the circumference of the inner conductor 120 and / or the communication port 116 a , each wave scattering unit 161 is a tooth, and each tooth is inclined toward the central axis of the inner conductor 120 .

[0077] In some embodiments, each scattering unit 161 has a bottom surface and a top surface 1612 that are oppositely disposed, and a side surface 1614 connected between the bottom surface and the top surface 1612, the bottom surface is connected to one of the inner conductor 120 or the outer conductor 110, and the top surface 1612 faces the other of the inner conductor 120 or the outer conductor 110. In the direction from the bottom surface to the top surface 1612, the area of ​​the cross section of the scattering unit 161 perpendicular to the central axis of the inner conductor 120 gradually decreases, and the side surface 1614 extends inwardly obliquely, so that energy is gathered at one end where the top surface 1612 is provided, and the energy is introduced from the periphery of the aerosol generating substrate 200 to the interior of the aerosol generating substrate 200.

[0078] It can be understood that the shape of the scattering unit 161 is not limited, and the shape of the cross section of the scattering unit 161 perpendicular to the axial direction of the inner conductor 120 can be rectangular, fan-shaped, circular, elliptical, etc.

[0079] More specifically, in one embodiment, the bottom surface of the wave dispersion unit 161 is an annular sector, the inner arc edge and the outer arc edge of the annular sector are arranged opposite to each other in the radial direction of the inner conductor 120, and the inner arc edge is located on the side of the outer arc edge facing the central axis of the inner conductor 120, and the two straight edges of the annular sector are arranged opposite to each other in the circumferential direction of the inner conductor 120.

[0080] The top surface 1612 of the scattering unit 161 is rectangular or isosceles trapezoidal. When the top surface 1612 of the scattering unit 161 is an isosceles trapezoid, the upper base and the lower base of the isosceles trapezoid are relatively arranged in the radial direction of the inner conductor 120, and the upper base is located on the side of the lower base facing the central axis of the inner conductor 120, and the two side edges of the isosceles trapezoid are relatively arranged in the circumferential direction of the inner conductor 120.

[0081] The side surface 1614 of the wave dispersing unit 161 includes an outer side surface 1614, an inner side surface 1614, a left side surface 1614 and a right side surface 1614. The outer side surface 1614 is roughly triangular, connected between the lower base of the top surface 1612 and the outer arc edge of the bottom surface, and the inner side surface 1614 is roughly triangular, connected between the upper base of the top surface 1612 and the inner arc edge of the bottom surface, and in the direction from the bottom surface to the top surface 1612, the outer side surface 1614 and the inner side surface 1614 extend obliquely in a direction approaching each other. The left side surface 1614 and the right side surface 1614 are roughly right triangles, connected between the two side edges of the top surface 1612 and the two straight edges of the bottom surface, respectively, and in the direction from the bottom surface to the top surface 1612, the left side surface 1614 and the right side surface 1614 extend obliquely in a direction approaching each other.

[0082] Further, the vertex angle a of the outer side surface 1614 connecting one end of the top surface 1612 is 15°-25° (the range of values ​​includes the endpoint value), preferably 20°, and the vertex angle b of the inner side surface 1614 connecting one end of the top surface 1612 is 15°-25° (the range of values ​​includes the endpoint value), preferably 20°. The left side surface 1614 and the right side surface 1614 are both right triangles, and the vertex angle of the left side surface 1614 connecting one end of the top surface 1612 and the vertex angle c of the right side surface 1614 connecting one end of the top surface 1612 are both 5°-10° (the range of values ​​includes the endpoint value), preferably 7.5°.

[0083] like Figure 2 As shown, in one embodiment, a scattering structure 160 is convexly provided on one end surface of the inner conductor 120 toward the top, and the scattering structure 160 continuously extends along the circumference of the inner conductor 120 to form a circular ring shape, while the top is not provided with a scattering unit 161. In this embodiment, the scattering structure 160 on the inner conductor 120 plays a role in introducing energy to the center position of the aerosol generating substrate 200.

[0084] like Figure 4As shown, in another embodiment, a scattering structure 160 is convexly provided on one end surface of the inner conductor 120 facing the top end, and the scattering structure 160 includes a plurality of scattering units 161 arranged at intervals along the circumference of the inner conductor 120, while the top end is not provided with the scattering unit 161. In this embodiment, the scattering structure 160 on the inner conductor 120 plays a role in introducing energy to the central position of the aerosol generating substrate 200.

[0085] like Figure 5 As shown, in another embodiment, the scattering structure 160 includes a first scattering structure and a second scattering structure that are arranged opposite to each other, the first scattering structure is arranged on an end surface of the inner conductor 120 facing the top end, and the first scattering structure includes a plurality of first scattering units arranged in sequence along the circumference of the inner conductor 120. The second scattering structure is arranged on an end surface of the top end facing the inner conductor 120, and the second scattering structure includes a plurality of second scattering units arranged in sequence along the circumference of the communication port 116a. The number of the first scattering units on the inner conductor 120 and the number of the second scattering units 161 at the top end may be the same or different, and the first scattering units are aligned or misaligned with the second scattering units.

[0086] Specifically, in one embodiment, the number of the first scattering units is the same as the number of the second scattering units, and in the axial direction of the inner conductor 120, at least some of the first scattering units are aligned one by one with the second scattering units. In another embodiment, the number of the first scattering units is the same as the number of the second scattering units, and in the axial direction of the inner conductor 120, at least some of the first scattering units are staggered with all the second scattering units. In another embodiment, the number of the first scattering units is different from the number of the second scattering units, and in the axial direction of the inner conductor 120, there is at least one scattering unit aligned with one of the second scattering units. By adjusting the number and alignment of the first scattering units and the second scattering units, the resonant frequency of the microwave and the heating uniformity can be adjusted.

[0087] The above-mentioned aerosol generating device 100 can introduce energy into the center position of the gap between the top of the inner conductor 120 and the outer conductor 110 through the setting of the wave scattering structure 160, thereby increasing the temperature of the central area inside the aerosol generating matrix 200. The temperature of the peripheral area of ​​the aerosol generating matrix 200 tends to be consistent with the temperature of the central area, which can make the degree of change of the material in the aerosol generating matrix 200 located in the atomization area tend to be consistent, effectively preventing the phenomenon that the periphery of the aerosol generating matrix 200 is burnt while the central area is not fully heated, thereby increasing the amount of aerosol generated and improving the user's smoking taste.

[0088] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An aerosol generating device, characterized in that: include: The outer conductor has a cavity and a bottom end and a top end that are oppositely disposed, and the top end is provided with a communication port that communicates with the cavity; An inner conductor is accommodated in the cavity, one end of the inner conductor is matched with the bottom end, the other end of the inner conductor extends toward the top end and is spaced from the top end, a resonance cavity is defined between the outer conductor and the inner conductor, and an atomization area is formed between the inner conductor and the top end; as well as A wave scattering structure, wherein the wave scattering structure is arranged at one end of the inner conductor facing the connecting port, and / or the wave scattering structure is arranged at a side edge of the connecting port facing the inner conductor.

2. The aerosol generating device according to claim 1, characterized in that: The cross-sectional area of ​​the wave dispersion structure perpendicular to the central axis of the inner conductor is smaller than the cross-sectional area of ​​the inner conductor perpendicular to its own central axis.

3. The aerosol generating device according to claim 1, characterized in that: The area enclosed by the outer contour line of the cross section of the wave dispersion structure perpendicular to the central axis of the inner conductor is smaller than the area enclosed by the outer contour line of the cross section of the inner conductor perpendicular to its own central axis.

4. The aerosol generating device according to claim 1, characterized in that: The wave-scattering structure is configured as a closed ring structure.

5. The aerosol generating device according to claim 4, characterized in that: The closed annular structure is arranged to close inwards.

6. The aerosol generating device according to claim 5, characterized in that: The cross-sectional area of ​​the closed annular structure perpendicular to the central axis of the inner conductor gradually decreases along the closing direction.

7. The aerosol generating device according to claim 1, characterized in that: The wave scattering structure includes at least one wave scattering unit, and the wave scattering unit is protruding from the edge of the inner conductor or the connecting hole.

8. The aerosol generating device according to claim 1, characterized in that: The wave scattering structure includes a plurality of wave scattering units, and all of the wave scattering units are arranged along the circumference of the inner conductor or the circumference of the communication port.

9. The aerosol generating device according to claim 8, characterized in that: All the wave scattering units are spaced and arranged equidistantly along the circumference of the inner conductor or the circumference of the communication opening.

10. The aerosol generating device according to claim 7 or 8, characterized in that: All of the wave-scattering units are inclined toward an inwardly converging direction.

11. The aerosol generating device according to claim 10, characterized in that: The cross-sectional area of ​​each of the wave-scattering units perpendicular to the central axis of the inner conductor gradually decreases along the extension direction of the inner conductor toward the top end; or The cross-sectional area of ​​each of the wave-scattering units perpendicular to the central axis of the inner conductor gradually decreases along the top end in the extending direction toward the inner conductor.

12. The aerosol generating device according to claim 11, characterized in that Each of the wave scattering units has a bottom surface connected to the inner conductor or the top end, a top surface arranged opposite to the bottom surface, and a side surface connected between the bottom surface and the top surface; Wherein, the bottom surface is an annular sector, and the top surface is a rectangle or an isosceles trapezoid.

13. The aerosol generating device according to claim 8, characterized in that The scattering wave structure comprises a first scattering wave structure and a second scattering wave structure which are arranged opposite to each other; The first wave-scattering structure is arranged on an end surface of the inner conductor facing the top end, and the first wave-scattering structure includes a plurality of first wave-scattering units arranged in sequence along the circumference of the inner conductor; The second wave scattering structure is arranged on a side of the top end facing the inner conductor, and the second wave scattering structure includes a plurality of second wave scattering units sequentially arranged along the circumference of the communication port.

14. The aerosol generating device according to claim 13, characterized in that The number of the first scattering units and the number of the second scattering units are the same; In the axial direction of the inner conductor, at least part of the first scattering units and the second scattering units are aligned one by one; or In the axial direction of the inner conductor, at least part of the first scattering units and all of the second scattering units are respectively arranged in a staggered manner.

15. The aerosol generating device according to claim 13, characterized in that The number of the first scattering units and the number of the second scattering units are different; In the axial direction of the outer conductor, there is at least one of the scattering elements aligned with one of the second scattering elements.

16. The aerosol generating device according to claim 8, characterized in that The wave-scattering structure includes a sawtooth structure arranged along the circumference of the inner conductor and / or the communicating port.

17. The aerosol generating device according to claim 16, characterized in that Each tooth of the sawtooth structure is inclined toward the central axis of the inner conductor.

18. The aerosol generating device according to claim 16, characterized in that The number of teeth of the sawtooth structure is 20-40; or The vertex angle of the outer side surface of each tooth of the sawtooth structure facing away from the central axis of the inner conductor is 15°-25°; or The vertex angle of the inner side surface of each tooth of the sawtooth structure facing the central axis of the inner conductor is 15°-25°; or The top angle of each tooth of the sawtooth structure facing the side surface of the adjacent tooth is 5°-10°.

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