Aerosol generating device
By forming a heating electric field through a combination of outer conductor, inner conductor, and extension conductor, the problem of uneven heating in radio frequency heating appliances is solved, and uniform heating of the aerosol generation matrix and consistency of aerosol release are achieved, thus improving the user experience.
Patent Information
- Application Number
- CN202520242008.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-02-14
AI Technical Summary
Existing radio frequency heating devices suffer from uneven heating when heating the aerosol generating matrix, resulting in significant differences in aerosol release performance and affecting the user's suction experience.
The structure employs a combination of an outer conductor, an inner conductor, and an extension conductor to form a heating electric field that passes radially through the aerosol generating matrix. The extension conductor guides the distribution of the electric field to form a fan-shaped region, thereby achieving uniform heating of the aerosol generating matrix.
It achieves uniform heating of the aerosol generation matrix and consistency of aerosol release, improving the user's suction experience.
Smart Images
Figure CN223810403U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electronic atomization, in particular to an aerosol generating device. BACKGROUND
[0002] The radio frequency heating appliance is used for radiating and heating an aerosol generating substrate by electromagnetic radiation. The aerosol generating substrate can be a processed plant leaf product. The radio frequency heating appliance feeds microwaves by using a feeding structure and radiates electromagnetic fields in a resonant cavity to heat the aerosol generating substrate and generate aerosols.
[0003] Due to uneven distribution of electromagnetic fields in the resonant cavity, the heating rates of different positions of the aerosol generating substrate are different during the heating process, resulting in uneven temperature field inside the aerosol generating substrate. Therefore, the aerosol release effect of the aerosol generating substrate at different stages of the heating process is greatly different, and it is difficult to achieve consistent taste during the smoking process, which affects the smoking experience of the user. CONTENT OF THE UTILITY MODEL
[0004] To solve at least one of the above technical problems, the present application provides an aerosol generating device which can uniformly heat the aerosol generating substrate and further improve the consistency of the taste of the aerosol. The technical solutions adopted are as follows.
[0005] The aerosol generating device provided by the present application comprises an outer conductor, an inner conductor and an extension conductor. The outer conductor forms a resonant cavity therein, and the resonant cavity is used for accommodating an aerosol generating substrate. The inner conductor is arranged in the resonant cavity, and the extension conductor is arranged in the resonant cavity. The extension conductor is arranged in a spaced manner with the inner conductor. At least a part of the extension conductor is used for being inserted into the aerosol generating substrate. The extension conductor and the inner conductor are coupled to form a heating electric field. The heating electric field passes through the aerosol generating substrate along the radial direction of the aerosol generating substrate.
[0006] In some embodiments of the present application, the axis of the extension conductor is coaxially arranged with the axis of the aerosol generating substrate. The axis of the extension conductor is coplanarly arranged with the inner conductor. The dimension of the inner conductor along the axial direction of the extension conductor is greater than the dimension perpendicular to the plane of the extension conductor.
[0007] In some embodiments of the present application, the extension conductor comprises a body extending in the axial direction and at least two spokes. The spokes are arranged in a spaced manner at the outer periphery of the body. An electric field confinement region is formed between the two spokes. The plane where the inner conductor is located is in the electric field confinement region.
[0008] In some embodiments of the present application, the two spokes are symmetrically arranged about the plane where the inner conductor is located.
[0009] In some embodiments of the present application, the extension conductor comprises a plurality of spokes, and the plurality of spokes are arranged at equal intervals along the circumference of the body.
[0010] In some embodiments of the present application, the spoke protrudes from the surface of the body by a dimension of less than or equal to 1 mm.
[0011] In some embodiments of the present application, at least a portion of the extension conductor is arranged as a thermocouple for detecting the internal temperature of the aerosol-generating substrate.
[0012] In some embodiments of the present application, the intersection region between the heating electric field and the aerosol-generating substrate is in the shape of a sector, and the apex of the sector of the heating electric field is located on the axis of the extension conductor.
[0013] In some embodiments of the present application, the minimum distance between the inner conductor and the outer extension conductor of the aerosol-generating substrate is 3.6 mm to 15.8 mm.
[0014] In some embodiments of the present application, the outer conductor of the resonant cavity has a thickness D along the dimension perpendicular to the plane in which the inner conductor is located, the thickness of the inner conductor is d, and the ratio of d to D is 1:2 to 1:3.
[0015] In some embodiments of the present application, the thickness of the inner conductor is 1 mm to 3 mm, and / or the length of the inner conductor is 10 mm to 30 mm.
[0016] In some embodiments of the present application, along the length direction of the resonant cavity, the distance between the axis of the extension conductor and the central axis of the resonant cavity is 5 mm to 16 mm.
[0017] In some embodiments of the present application, the aerosol-generating device further comprises a driving mechanism for driving the aerosol-generating substrate to rotate along its own axis, so that each portion of the aerosol-generating substrate in the circumferential direction passes through the heating electric field in turn.
[0018] In some embodiments of the present application, the driving mechanism is connected to the outer conductor, and the driving mechanism comprises a driving member and a clamping member, the clamping member is used to clamp the outer periphery of the aerosol-generating substrate, and the driving member drives the clamping member to rotate relative to the outer conductor.
[0019] In some embodiments of the present application, the driving mechanism is located outside the resonant cavity, the clamping member comprises a clamping ring, an inner wall of the clamping ring is provided with a clamping protrusion for abutting against the outer peripheral surface of the aerosol-generating substrate, and an outer periphery of the clamping ring is further provided with a transmission tooth, and the driving member is connected to the transmission tooth to drive the clamping ring to rotate.
[0020] In some embodiments of the present application, the aerosol generating device further comprises a mounting seat located in the resonant cavity and defining a mounting cavity separated from the resonant cavity; wherein the mounting cavity has an opening for insertion of the aerosol generating substrate, and a closed end opposite to the opening;
[0021] One end of the extension conductor is in ohmic contact with the outer conductor, and the other end is located in the mounting cavity and extends in the direction of the opening;
[0022] One end of the inner conductor is in ohmic contact with the outer conductor, and the other end extends in the direction of the mounting cavity and is located at the outer periphery of the mounting seat, and the extension direction of the inner conductor intersects the extension direction of the extension conductor.
[0023] In some embodiments of the present application, the extension direction of the inner conductor is perpendicular to the extension direction of the extension conductor, in the direction of the opening, and the height of the extension conductor is less than the height of the inner conductor.
[0024] In some embodiments of the present application, the spacing between the extension conductor and the inner conductor gradually increases in the direction of the opening.
[0025] In some embodiments of the present application, the inner conductor is in the form of a sheet, and the extension conductor is in the form of a column.
[0026] The embodiments of the present application have at least the following beneficial effects: By providing the extension conductor, the electric field formed by the outer conductor and the inner conductor can be guided, and the electric field distribution after being guided by the extension conductor is approximately fan-shaped. The electric field energy is mainly concentrated in the fan-shaped area, and the heating electric field has the effect of electromagnetic wave radiation heating on the aerosol generating substrate. By providing the heating electric field to pass through the aerosol generating substrate in the radial direction of the aerosol generating substrate, a fan-shaped heating area is formed on the aerosol generating substrate, which can be heated by the radiation of the electric field, thereby achieving uniform heating of the aerosol generating substrate, which helps to achieve the effect of uniform heating and aerosol generation of the aerosol generating substrate, thereby improving the consistency of the taste. BRIEF DESCRIPTION OF DRAWINGS
[0027] The present application will be further illustrated below in conjunction with the drawings and embodiments. It should be noted that the embodiments embodied in the following drawings are exemplary and are used to explain the present application, and cannot be understood as a limitation of the present application.
[0028] Figure 1 The structure schematic diagram of the aerosol generating device provided for the embodiments of the present application;
[0029] Figure 2 The A-A sectional view of Figure 1 ;
[0030] Figure 3 The electric field distribution schematic diagram of the aerosol generating device provided by the embodiment of the present application at the first section;
[0031] Figure 4 The front view of the electric field distribution of the aerosol generating device provided by the embodiment of the present application; Figure 3 The front view of the electric field distribution of the aerosol generating device provided by the embodiment of the present application;
[0032] Figure 5 The electric field distribution schematic diagram of the aerosol generating device provided by the embodiment of the present application at the second section;
[0033] Figure 6 The electric field distribution schematic diagram of the aerosol generating substrate provided by the embodiment of the present application at the second section;
[0034] Figure 7 The resonance frequency schematic diagram of the aerosol generating device provided by the embodiment of the present application;
[0035] Figure 8 The internal structure schematic diagram of the aerosol generating device provided by the embodiment of the present application;
[0036] Figure 9 The top view of the extension conductor of the aerosol generating device provided by the embodiment of the present application;
[0037] Figure 10 The B-B sectional view of the aerosol generating device provided by the embodiment of the present application; Figure 1 The B-B sectional view of the aerosol generating device provided by the embodiment of the present application;
[0038] Figure 11 The driving mechanism schematic diagram of the aerosol generating device provided by the embodiment of the present application.
[0039] Reference signs: 100, aerosol generating device; 10, outer conductor; 11, resonance cavity; 111, mounting seat; 20, inner conductor; 30, extension conductor; 31, heating electric field; 32, body; 33, spoke; 34, electric field constraint area; 40, driving mechanism; 41, driving piece; 42, clamping piece; 421, clamping protrusion; 422, transmission tooth; 50, feeding structure; 200, aerosol generating substrate. DETAILED DESCRIPTION
[0040] The embodiments of the present application are described in detail below with reference to the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0041] In the description of the present application, it needs to be understood that if the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0042] In the description of the present application, if several meanings are one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described that the first, second is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.
[0043] In the description of the present application, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example: it can be fixedly connected, or it can be detachably connected, or integrally connected; 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 communication inside two elements. 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.
[0044] In the description of the present application, if the description of the terms "as an embodiment", "an embodiment", "some examples", "some embodiments", "illustrative embodiments", "example", "specific example", "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0045] The present application provides an aerosol generating device 100, which can uniformly heat the aerosol generating substrate 200, thereby further improving the consistency of the taste of the aerosol. The content of the present application will be described in detail below in conjunction with specific embodiments. It should be noted that the following description is only exemplary and is not a specific limitation on the present application.
[0046] Please refer to Figures 1 to 4The present application provides an aerosol generating substrate 200, comprising an outer conductor 10, an inner conductor 20 and an extension conductor 30. The outer conductor 10 is formed with a resonance cavity 11 for accommodating the aerosol generating substrate 200. The inner conductor 20 is arranged in the resonance cavity 11, and the extension conductor 30 is arranged in the resonance cavity 11 and spaced apart from the inner conductor 20. At least a part of the extension conductor 30 is arranged to be inserted into the aerosol generating substrate 200, and the extension conductor 30 is coupled with the inner conductor 20 to form a heating electric field 31 that passes through the aerosol generating substrate 200 along the radial direction of the aerosol generating substrate 200. The outer conductor 10 can provide a structure for the resonant frequency of the radio frequency radiator, and the coupling with the inner conductor 20 forms a radiated electromagnetic wave in the resonance cavity 11. By arranging the extension conductor 30, the electric field formed by the outer conductor 10 and the inner conductor 20 can be guided, and the electric field distribution after being guided by the extension conductor 30 is approximately fan-shaped. Please refer to Figures 3 to 4 wherein Figure 3 the electric field distribution of the aerosol generating device 100 in a cross section perpendicular to the axis of the aerosol generating substrate 200 (first cross section) is shown, Figure 4 is Figure 3 a schematic view of the electric field distribution in the front view angle, that is, in the range with the extension conductor 30 as the vertex and the line connecting the extension conductor 30 and the inner conductor 20 as the radius, the electric field energy is mainly distributed on both sides of the line and forms a fan-shaped area, and the electric field energy is mainly concentrated in the fan-shaped area (for example Figure 4 the area formed by the field strength higher than 5.2E+4V / m), and the fan-shaped area forms the heating electric field 31, which has the effect of electromagnetic wave radiation heating on the aerosol generating substrate 200. In combination with Figure 5 and Figure 6 , Figure 5 the electric field distribution of the aerosol generating device 100 in a cross section parallel to the plane where the inner conductor 20 is arranged (second cross section) is shown, Figure 6 the electric field distribution of the aerosol generating substrate 200 in the second cross section is shown, Figure 5 and Figure 6 all show the shape of the heating electric field 31. By arranging the heating electric field 31 to pass through the aerosol generating substrate 200 along the radial direction of the aerosol generating substrate 200, that is, a fan-shaped heating area is formed on the aerosol generating substrate 200, which can be heated by the radiation of the electric field, thereby achieving uniform heating of the aerosol generating substrate 200, which helps to achieve uniform heating and aerosol release of the aerosol generating substrate 200, thereby improving the consistency of the taste.
[0047] In some embodiments, the aerosol generating substrate 200 can rotate around its own axis in the resonance cavity to heat different fan-shaped areas in the circumferential direction by rotation.
[0048] It should be noted that, for example, Figure 4 Figure 4 The electric field distribution of the electromagnetic wave in the resonant cavity 11 is shown, and the aerosol generating substrate 200 is located in the heating electric field 31. The area where the aerosol generating substrate 200 intersects with the electric field is approximately fan-shaped. As can be seen from Figure 4 , the shape of the heating electric field 31 can not strictly follow the fan shape, and the boundary of the heating electric field 31 can also be not smooth, but it can be understood that during the rotation of the aerosol generating substrate 200, a part of the aerosol generating substrate 200 always enters the heating electric field 31, while a part of the aerosol generating substrate 200 also leaves the heating electric field 31. After the aerosol generating substrate 200 rotates for a certain period of time, uniform heating of the entire aerosol generating substrate 200 can be achieved.
[0049] Please refer to Figure 7 , Figure 7 The resonant frequency of the aerosol generating device 100 is shown, and it can be seen that the minimum return loss of the aerosol generating device 100 provided by the present application at the frequency band of 2.4477GHz is very small. Therefore, the size of the inner conductor 20 and the extension conductor 30 in the resonant cavity 11 can be selected according to the need to select any frequency band in the ISM frequency band.
[0050] Optionally, please refer back to Figure 2 , the inner conductor 20 and the extension conductor 30 can be arranged at both ends of the resonant cavity 11, that is, the extension conductor 30 is arranged eccentrically about the central axis of the resonant cavity 11. In this way, a certain distance can be provided between the inner conductor 20 and the extension conductor 30, so as to guide the electric field, and the space in the resonant cavity 11 can also be arranged reasonably.
[0051] Optionally, the inner conductor 20 can be electrically connected to the outer conductor 10, for example, at one end of the resonant cavity 11 away from the extension conductor 30, the inner conductor 20 is connected to the outer conductor 10. The extension conductor 30 can be electrically connected to the outer conductor 10 in the resonant cavity 11, or can not be connected to the outer conductor 10. The aerosol generating device 100 can also be provided with a feeding structure 50, which can be connected to the outer conductor 10 or the inner conductor 20. For example, Figure 2 , the feeding structure 50 can be arranged at the bottom of the outer conductor 10, and a part of the feeding structure 50 extends into the resonant cavity 11 and is connected to the inner conductor 20, so as to realize the effect of feeding the electromagnetic field into the resonant cavity 11. Of course, in other examples, the feeding structure 50 can also be arranged on the side surface of the outer conductor 10, for example, on the side surface where the inner conductor 20 is connected to the outer conductor 10 as shown in Figure 2 .
[0052] Optionally, the outer conductor 10 can serve as a reference ground plane for the radio frequency radiator. The outer conductor 10 can be made of metal, such as copper, aluminum, or an alloy containing copper or aluminum. Materials with heat-insulating properties, such as ceramics or plastics, can also be inserted into the outer conductor 10 as a sandwich layer to help isolate heat within the resonant cavity 11 and reduce the external temperature of the outer conductor 10.
[0053] In some embodiments, the aerosol generating device 100 further includes a mounting base 111, which is located within the resonant cavity 11 and defines a mounting cavity isolated from the resonant cavity 11. The mounting cavity has an opening for inserting the aerosol generating matrix and a closed end opposite the opening. One end of the extending conductor 30 is in ohmic contact with the outer conductor 10, and the other end is located within the mounting cavity and extends along the direction of the opening. One end of the inner conductor 20 is in ohmic contact with the outer conductor 10, and the other end extends along the direction of the mounting cavity and is located on the outer periphery of the mounting base 111. The extending directions of the inner conductor 20 and the extending conductor 30 intersect. By providing the mounting base 111 and using it to house the aerosol generating matrix 200, the aerosol generating matrix 200 can be isolated from the inner conductor 20 and the outer conductor 10, preventing contamination of the inner conductor 20 or the outer conductor 10 by the aerosol generating matrix 200, thus helping to maintain a good level of cleanliness within the resonant cavity 11.
[0054] In some embodiments, the extending direction of the inner conductor 20 is perpendicular to the extending direction of the extending conductor 30, along the opening direction ( Figure 2 In the z-direction of the inner conductor 20, the height of the extension conductor 30 is less than the height of the inner conductor 20. This helps to control the electric field radiation range of the electromagnetic wave within the two ends of the extension conductor 30, so that the electric field is concentrated near the extension conductor 30, and also helps the electromagnetic wave radiate into the aerosol generating matrix 200, reducing electromagnetic wave leakage.
[0055] In some embodiments, the extending conductor 30 may be a cylindrical structure, and the inner conductor 20 may be a sheet-like or block-like structure. The resonant cavity 11 is generally a rectangular spatial structure, and there may be two opposing inner wall surfaces inside the resonant cavity 11. These two inner wall surfaces are parallel to each other, and the inner conductor 20 is disposed in the resonant cavity 11 and is parallel to these two inner wall surfaces. This also helps to simplify the electric field design within the resonant cavity 11. At the same time, the inner conductor 20 itself has a certain height, that is, the inner conductor 20 is generally a sheet-like structure. In this way, in the axial direction of the aerosol generating matrix 200, the inner conductor 20, the outer conductor 10, and the extending conductor 30 can form a heating electric field 31 with a certain height, and the extension direction of the heating electric field 31 is the same as the axial direction of the aerosol generating matrix 200. This arrangement can improve the heating efficiency of the aerosol generating matrix 200 and also help to improve the uniformity of heating of the aerosol generating matrix 200 in the axial direction.
[0056] In the heating electric field formed by the inner conductor 20 and the extending conductor 30, the electric field strength is from top to bottom along the axial direction of the extending conductor 30 (along...). Figure 2 There is attenuation in the direction opposite to the z-axis, which leads to uneven heating of the aerosol generating matrix 200, where the upper part is hotter than the lower part. Therefore, in some embodiments, the spacing between the extension conductor 30 and the inner conductor 20 is directed towards the opening direction ( Figure 2 The electric field strength gradually increases in the positive direction of the z-axis. This arrangement utilizes the principle that the electric field is weaker where the distance between the extension conductor 30 and the inner conductor 20 is large, and stronger where the distance is small. This ensures that the electric field strength is roughly the same in the upper and lower parts of the extension conductor 30, thereby improving the uniformity of the electric field. A more uniform heating electric field is obtained along the axial direction of the extension conductor 30, which helps to improve the heating uniformity of the aerosol generating matrix 200 and achieve a uniform heating effect.
[0057] Optionally, please combine Figure 2 and Figure 8 To achieve a gradual increase in the distance between the extension conductor 30 and the inner conductor 20 towards the opening direction, in some examples, the extension conductor 30 can be sharpened along the z-axis, meaning its diameter gradually decreases from bottom to top, thereby increasing the distance between the extension conductor 30 and the inner conductor 20. This arrangement further constrains the radiation range of the electric field, preventing leakage of the electric field outside the resonant cavity 11 in the z-direction. Alternatively, in other examples, a chamfer or bevel structure can be provided at the end of the inner conductor 20 near the extension conductor 30. For example, along the z-axis, the chamfer or bevel structure is inclined away from the extension conductor 30. This method also increases the distance between the extension conductor 30 and the inner conductor 20. Of course, the above two arrangements can be combined, i.e., both the extension conductor 30 can be sharpened, and the inner conductor 20 can be beveled, further increasing the distance between them. No specific limitation is made here.
[0058] In some embodiments, the axis of the extending conductor 30 is coaxial with the axis of the aerosol generating matrix 200, and the axis of the extending conductor 30 is coplanar with the inner conductor 20. The inner conductor 20 is along the axial direction of the extending conductor 30 (i.e., Figure 2The size of the axis of the extension conductor 30 is greater than the size of the plane perpendicular to the plane of the extension conductor 30 (i.e., the z direction in FIG. 2). By setting the axis of the extension conductor 30 coaxial with the axis of the aerosol generating substrate 200, the center of the aerosol generating substrate 200 coincides with the apex of the sector of the heating electric field 31, and thus the aerosol generating substrate 200 can rotate along the axis of the extension conductor 30. On the one hand, during rotation of the aerosol generating substrate 200, each part of the aerosol generating substrate 200 can pass through the heating electric field 31, thereby achieving comprehensive heating of the aerosol generating substrate 200. On the other hand, regardless of the angle of rotation of the aerosol generating substrate 200, the area (volume) of the aerosol generating substrate 200 heated is always the same, which helps to improve the uniformity of heating. By setting the axis of the extension conductor 30 coplanar with the inner conductor 20, the heating electric field 31 can be symmetrically distributed along the plane in which the inner conductor 20 is located, which helps to simplify the electric field design in the resonant cavity 11.
[0059] In some embodiments, referring to FIG. 3, the extension conductor 30 includes a body 32 extending in the axial direction and at least two spokes 33, the spokes 33 being spaced apart on the outer periphery of the body 32, and a field confinement region 34 being formed between the two spokes 33, and the plane in which the inner conductor 20 is located being in the field confinement region 34. Figure 9 By providing two spokes 33 on the outer peripheral surface of the body 32, the two spokes 33 can further guide the electric field, and the plane in which the inner conductor 20 is located is in the field confinement region 34, i.e., the field confinement region 34 is arranged towards the inner conductor 20, and the heating electric field 31 is confined in the field confinement region 34, which can better define the sector structure of the heating electric field 31. Specifically, the extension directions of the lines connecting the two spokes 33 and the axis of the body 32 define two radii of the sector region, and the included angle between the two spokes 33 is the central angle of the sector region. By using the two-spoke 33 structure to confine the heating electric field 31, on the one hand, the distribution range of the heating electric field 31 can be better defined, and electromagnetic field leakage can be reduced, and on the other hand, the electromagnetic field can be more concentrated in the heating electric field 31 region, and the effect of radiant heating can be improved.
[0060] In some embodiments, the two spokes 33 are symmetrically arranged about the plane in which the inner conductor 20 is located. That is, the plane in which the inner conductor 20 is located bisects the field confinement region 34 (heating electric field 31), and the heating electric field 31 can be symmetrically distributed on both sides of the plane in which the inner conductor 20 is located, which helps to improve the uniform heating effect of the heating electric field 31 on the aerosol generating substrate 200.
[0061] In some embodiments, the extension conductor 30 includes a plurality of spokes 33, and the plurality of spokes 33 are equally spaced along the circumference of the body 32. The plurality of spokes 33 can further confine the electric field, and further reduce the leakage of the electric field.
[0062] Optionally, the extension conductor 30 can rotate with the aerosol generating device 100, and in this case, the electric field confinement region 34 defined by the adjacent two spokes 33 also rotates. When one electric field confinement region 34 rotates to be misaligned with the inner conductor 20, the adjacent other electric field confinement region 34 can rotate to be directed towards the inner conductor 20. In this way, even when the extension conductor 30 rotates, one electric field confinement region 34 can still be directed towards the inner conductor 20, so that the guiding and confining effect of the electric field can be achieved.
[0063] In some embodiments, the spokes 33 protrude from the surface of the body 32 by a dimension of ≤1 mm. In this way, on the one hand, the friction between the aerosol generating substrate 200 and the spokes 33 can be reduced when the aerosol generating substrate 200 rotates, so that the material (e.g. tobacco fibers) in the aerosol generating substrate 200 is less likely to be stuck on the spokes 33, and the aerosol generating substrate 200 can rotate smoothly. On the other hand, the shape of the heating electric field 31 guided by the extension conductor 30 can be ensured to be fan-shaped. Preferably, the spokes 33 protrude from the surface of the body 32 by a dimension of ≤0.5 mm. When the spokes 33 protrude from the surface of the body 32 by a dimension of >1 mm, the distribution of the heating electric field 31 will be deformed, and it will be difficult to maintain the fan-shaped distribution structure.
[0064] In some embodiments, at least a portion of the extension conductor 30 is configured as a thermocouple, which is used to detect the internal temperature of the aerosol generating substrate 200. By configuring a portion of the extension conductor 30 as a thermocouple, the internal temperature of the aerosol generating substrate 200 can be detected by the temperature measurement function of the thermocouple. The thermocouple can also be connected to an external radio frequency source, which can adjust the input power in real time according to the detected internal temperature of the aerosol generating substrate 200, so that the effect of temperature feedback control can be achieved. For example, the thermocouple can be used to form the extension conductor 30, or a portion of the extension conductor 30 can be hollowed out, and the thermocouple can be filled into the hollowed-out portion to detect the temperature.
[0065] In some embodiments, please refer to Figure 8The minimum distance L1 between the inner conductor 20 and the extension conductor 30 is 3.6 mm to 15.8 mm, for example, can be 3.6 mm, 3.65 mm, 3.8 mm, 5 mm, 7 mm, 9 mm, 12 mm, 15 mm, 15.65 mm, 15.8 mm, etc. According to the guiding effect of the extension conductor 30 on the electric field, the closer the distance between the extension conductor 30 and the inner conductor 20, the larger the central angle of the fan-shaped heating electric field 31. Based on this, by controlling the distance between the extension conductor 30 and the inner conductor 20, the central angle range of the heating electric field 31 can be controlled within a reasonable range. When the minimum distance L1 exceeds 15.8 mm, the distance between the inner conductor 20 and the extension conductor 30 is too large, which will cause the central angle of the fan-shaped heating electric field 31 to be too small, which is not conducive to improving the heating efficiency of the aerosol generating substrate 200.
[0066] In some embodiments, along the length direction of the resonant cavity 11, the distance L2 between the axis of the extension conductor 30 and the central axis of the resonant cavity 11 is 5 mm to 16 mm. Similarly, by limiting the distance L2 between the extension conductor 30 and the central axis of the resonant cavity 11, on the one hand, the shape and size of the heating electric field 31 guided by the extension conductor 30 can be satisfied, that is, the size of the central angle of the fan-shaped heating electric field 31, and on the other hand, it can also avoid the extension conductor 30 deviating too much from the central axis of the resonant cavity 11, ensuring that the structure of the aerosol generating device 100 meets the requirements of compactness and miniaturization design.
[0067] In some embodiments, please refer to Figure 10 The thickness of the outer conductor 10 is D, the thickness of the inner conductor 20 is d, that is Figure 10 The size in the x direction, and the ratio of d to D is 1:2 to 1:3. By limiting the ratio of d to D in the above range, on the one hand, it is helpful to realize the electric field matching between the outer conductor 10 and the inner conductor 20, and on the other hand, it can also reasonably control the overall size of the aerosol generating device 100, realizing the compactness and miniaturization design of the aerosol generating device 100.
[0068] In some embodiments, the thickness of the inner conductor 20 ( Figure 10 The size in the x direction) is 1 mm to 3 mm, or the length of the inner conductor 20 is 10 mm to 30 mm ( Figure 10 The size in the y direction). By limiting the size of the inner conductor 20 in the above range, on the one hand, it can satisfy the impedance matching between the inner conductor 20 and the outer conductor 10, realizing the coupling effect of electromagnetic waves. On the other hand, it is helpful to realize the compactness and miniaturization design of the entire aerosol generating device 100.
[0069] In some embodiments, please refer to Figure 11The aerosol generating device 100 further comprises a driving mechanism 40 configured to drive the aerosol generating substrate 200 to rotate along its own axis, so that each part of the aerosol generating substrate 200 in the circumferential direction passes through the heating electric field 31 in sequence. By driving the aerosol generating substrate 200 to rotate along its own axis by the driving mechanism 40, each region on the aerosol generating substrate 200 can pass through the region of the heating electric field in sequence by rotation and thus be heated, thereby achieving the effect of uniform heating of the aerosol generating substrate 200.
[0070] In some embodiments, the driving mechanism 40 is connected to the outer conductor 10, and the driving mechanism 40 comprises a driving member 41 and a clamping member 42 configured to clamp the outer periphery of the aerosol generating substrate 200, and the driving member 41 drives the clamping member 42 to rotate relative to the outer conductor 10. By the clamping action of the clamping member 42 on the aerosol generating substrate 200 and the driving action of the driving member 41 on the clamping member 42, the rotation effect of the aerosol generating substrate 200 can be achieved, and the driving member 41 does not need to directly contact the aerosol generating substrate 200, so that the driving member 41 is not affected during replacement of the aerosol generating substrate 200, thereby improving the flexibility of the driving mechanism 40.
[0071] In some embodiments, the driving mechanism 40 is located outside the resonant cavity 11, and the clamping member 42 comprises a clamping ring, an inner wall of the clamping ring is provided with a clamping protrusion 421 configured to abut against the outer periphery of the aerosol generating substrate 200, and an outer periphery of the clamping ring is further provided with a transmission tooth 422, and the driving member 41 is connected to the transmission tooth 422 to drive the clamping ring to rotate. By providing the clamping protrusion 421, the clamping force on the aerosol generating substrate 200 can be increased to avoid loosening during use. When installing, the aerosol generating substrate 200 is inserted into the clamping ring, and the clamping protrusion 421 is in interference connection with the aerosol generating substrate 200, so that the aerosol generating substrate 200 is fixed in the clamping ring. Exemplarily, the driving member 41 can be a rotary motor or the like, and the rotary motor is engaged with the transmission tooth 422 of the clamping ring through a gear to drive the clamping ring. By arranging the driving mechanism 40 outside the resonant cavity 11, the driving mechanism 40 can be avoided from being coupled with the structure inside the resonant cavity 11, which is helpful to simplify the electric field design inside the resonant cavity 11. Of course, in other examples, the driving mechanism 40 can also be arranged inside the resonant cavity 11, which is not limited herein.
[0072] Optionally, the mounting seat 111 can be provided in a cylindrical shape. The mounting seat 111 can be coaxially arranged with the clamping ring. The aerosol generating substrate 200 can be inserted from the clamping ring and into the mounting seat 111. The mounting seat 111 can provide auxiliary fixation for the aerosol generating substrate 200, but does not affect the rotation of the aerosol generating substrate 200 in the mounting seat 111. The mounting seat 111 can also reduce the shaking or deviation of the aerosol generating substrate 200 during rotation, thereby improving the stability of the rotation of the aerosol generating substrate 200.
[0073] When the aerosol generating device 100 is used, one end of the aerosol generating substrate 200 is inserted into the resonant cavity 11 from the clamping ring, and the clamping ring clamps and fixes the aerosol generating substrate 200. The aerosol generating device 100 is started, and the electromagnetic wave is fed into the resonant cavity 11 by the feed structure 50. The heating electric field 31 formed by the coupling of the inner conductor 20, the outer conductor 10, and the extension conductor 30 heats one of the sector-shaped regions of the aerosol generating substrate 200, thereby generating aerosol for the user to inhale. Then, the driving member 41 in the driving mechanism 40 drives the rotation of the clamping ring, and the clamping ring drives the rotation of the aerosol generating substrate 200. The sector-shaped region of the aerosol generating substrate 200 that has been heated rotates away from the heating electric field 31, and the other sector-shaped region to be heated enters the heating electric field 31 immediately for heating. In this way, the aerosol generating substrate 200 can be regarded as a cylindrical structure formed by a plurality of sector-shaped regions. The plurality of sector-shaped regions of the aerosol generating substrate 200 are heated in sequence, thereby achieving uniform heating, so that the user can obtain approximately the same taste during use, improve the consistency of the taste, and thereby improve the user experience.
[0074] Optionally, the rotation of the aerosol generating substrate 200 driven by the driving mechanism 40 can be continuous or intermittent. The above example shows the process of intermittent rotation of the aerosol generating substrate 200, that is, the aerosol generating substrate 200 stops rotating and remains for a certain period of time between adjacent two heating processes. Of course, in other examples, the aerosol generating substrate 200 can also rotate continuously. The rotation mode and rotation speed of the aerosol generating substrate 200 can be specifically set or matched with the heating power of the electric field to achieve good heating effect, which is not limited here.
[0075] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art in the technical field, various changes can be made without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
Claims
1. An aerosol generating device, characterized by: Comprising an outer conductor, a resonant cavity is formed in the outer conductor, the resonant cavity is used to accommodate an aerosol generating substrate; an inner conductor, which is arranged in the resonant cavity; and an extension conductor, which is arranged in the resonant cavity, the extension conductor is spaced apart from the inner conductor, at least a part of the extension conductor is used to be inserted into the aerosol generating substrate, the extension conductor and the inner conductor are coupled to form a heating electric field, the heating electric field passes through the aerosol generating substrate along the radial direction of the aerosol generating substrate.
2. An aerosol generation device according to claim 1, characterized in that: The axis of the extension conductor is coaxially arranged with the axis of the aerosol generating substrate, the axis of the extension conductor is coplanarly arranged with the inner conductor, the size of the inner conductor along the axis direction of the extension conductor is greater than the size perpendicular to the plane of the extension conductor itself.
3. An aerosol generation device according to claim 2, characterized in that: The extension conductor comprises an axially extending body and at least two spokes, the spokes are spaced apart on the outer periphery of the body, the electric field confinement region is formed between the two spokes, and the plane where the inner conductor is located is in the electric field confinement region.
4. An aerosol generation device according to claim 3, characterized in that: The two spokes are symmetrically arranged about the plane where the inner conductor is located.
5. An aerosol generation device according to claim 3, characterized in that: The extension conductor comprises a plurality of spokes, and the plurality of spokes are equally spaced along the circumference of the body.
6. An aerosol generation device according to claim 3, characterized in that: The spoke protrudes from the surface of the body by ≤1mm.
7. An aerosol generation device according to any of claims 1 to 6, wherein: At least a part of the extension conductor is arranged as a thermocouple for detecting the internal temperature of the aerosol generating substrate.
8. An aerosol generation device according to any of claims 1 to 6, wherein: The intersection area of the heating electric field and the aerosol generating substrate is a sector, and the vertex of the sector of the heating electric field is located on the axis of the extension conductor.
9. An aerosol generation device according to claim 8, characterized in that: The minimum distance between the inner conductor and the extension conductor is 3.6mm to 15.8mm.
10. An aerosol generation device according to any of claims 1 to 6, wherein: The thickness of the outer conductor is D, the thickness of the inner conductor is d, and the ratio of d to D is 1:2 to 1:
3.
11. An aerosol generation device according to claim 10, characterized in that: The thickness of the inner conductor is 1mm to 3mm, and / or the length of the inner conductor is 10mm to 30mm.
12. An aerosol generation device according to claim 10, characterized in that: Along the length direction of the resonant cavity, the distance between the axis of the extension conductor and the central axis of the resonant cavity is 5mm to 16mm.
13. An aerosol generation device according to any of claims 1 to 6, wherein, The aerosol generating device further comprises a driving mechanism for driving the aerosol generating substrate to rotate along its own axis, so that each part of the aerosol generating substrate in the circumferential direction passes through the heating electric field in turn.
14. An aerosol generation device according to claim 13, characterized in that: The driving mechanism is connected to the outer conductor, and the driving mechanism comprises a driving member and a clamping member, the clamping member is used to clamp the outer periphery of the aerosol generating substrate, and the driving member drives the clamping member to rotate relative to the outer conductor.
15. An aerosol generation device according to claim 14, characterized in that: The driving mechanism is located outside the resonant cavity, the clamping member comprises a clamping ring, the inner wall of the clamping ring is provided with a clamping protrusion for abutting against the outer peripheral surface of the aerosol generating substrate, and the outer periphery of the clamping ring is further provided with a transmission gear, and the driving member is connected to the transmission gear to drive the clamping ring to rotate.
16. An aerosol generation device according to any of claims 1 to 6, wherein, The aerosol generating device further comprises a mounting seat, which is located in the resonant cavity and defines a mounting cavity isolated from the resonant cavity; wherein The mounting cavity has an opening for inserting the aerosol generating substrate, and a closed end opposite to the opening; One end of the extension conductor is in ohmic contact with the outer conductor, and the other end is located in the mounting cavity and extends in the direction of the opening; One end of the inner conductor is in ohmic contact with the outer conductor, and the other end extends in the direction of the mounting cavity and is located at the outer periphery of the mounting seat, and the extension direction of the inner conductor intersects the extension direction of the extension conductor.
17. An aerosol generation device according to claim 16, wherein, The extension direction of the inner conductor is perpendicular to the extension direction of the extension conductor, and the extension direction is along the opening direction, and the height of the extension conductor is less than the height of the inner conductor.
18. An aerosol generation device according to claim 16, wherein, The spacing between the extension conductor and the inner conductor gradually increases in the opening direction.
19. An aerosol generation device according to claim 16, wherein, The inner conductor is in the form of a sheet, and the extension conductor is in the form of a column.