Aerosol generating device and microwave heating assembly

Abstract

The present invention relates to an aerosol generating device and a microwave heating assembly, the microwave heating assembly comprising: an outer conductor unit having an inner side with an accommodating cavity, the outer conductor unit comprising an open end and a closed end; the open end is opposite to the closed end; the inner conductor unit is at least partially mounted in the accommodating cavity and comprises a base material extending from the open end to the closed end, a first conductor and a second conductor; the substrate includes a first surface disposed toward the aerosol-generating substrate; the first conductor and the second conductor are arranged on the first surface, and a gap is reserved between the first conductor and the second conductor and forms a microwave radiation area. According to the microwave heating assembly, the formed heating uniformity can be improved through the gap, the aerosol generating substrate is prevented from being burnt, and the smoking taste is improved.

Description

Technical Field

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

[0002] At present, microwave heating technology is applied to aerosol generating devices. Aerosol generating devices using microwave heating technology have the advantages of high heating efficiency and fast aerosol generation. The principle of microwave heating aerosol generating devices is generally designed based on a quarter-wavelength coaxial cavity with an open end of the inner conductor unit. After adding the aerosol generating matrix, the cavity will resonate at the resonant frequency, thereby achieving rapid heating of the aerosol generating matrix.

[0003] The inner conductor of the microwave-heated aerosol generating device is in the shape of a vertical single needle. The energy is transmitted from bottom to top, forming a strong electric field near the terminal in the cavity to heat the aerosol generation matrix. The uneven heating caused by the uneven electric field can easily cause the aerosol matrix to burn near the end of the inner conductor, affecting the taste of the smoke. Summary of the invention

[0004] The object of the present invention is to provide an improved aerosol generating device and a microwave heating assembly.

[0005] The technical solution adopted by the present invention to solve the technical problem is: construct a microwave heating component, including:

[0006] An outer conductor unit, having an accommodating cavity inside, the outer conductor unit comprising an open end and a closed end; the open end is arranged opposite to the closed end;

[0007] an inner conductor unit, at least partially mounted in the accommodating cavity, comprising a substrate extending from the open end to the closed end, a first conductor and a second conductor; the substrate comprising a first surface disposed toward the aerosol generating substrate;

[0008] The first conductor and the second conductor are both arranged on the first surface with a gap between them, and the gap forms a microwave radiation area.

[0009] In some embodiments, the substrate extends in a first direction from the open end to the closed end, the first conductor and the second conductor extend along the first direction on the substrate, and the first conductor and the second conductor have the gap in a second direction perpendicular to the first direction and parallel to the first surface. In some embodiments, the gap extends from a set distance from the open end to the closed end;

[0010] The first conductor extends from the open end to the closed end;

[0011] And / or, the second conductor extends from a position at a set distance from the open end towards the closed end.

[0012] In some embodiments, in the second direction, the substrate has a first dimension, the first conductor has a second dimension, the second conductor has a third dimension, and the slit has a fourth dimension;

[0013] The fourth dimension is greater than zero and less than or equal to the difference between the first dimension minus the second dimension and the third dimension. In some embodiments, in the second direction, a plurality of first branches are provided on the first conductor, the plurality of first branches are spaced along the extending direction of the first conductor, and each first branch extends towards the second conductor, and a first gap is left between its extending end and the second conductor;

[0014] And / or, in the second direction, a plurality of second branches are provided on the second conductor, the plurality of second branches are spaced along the extending direction of the second conductor, and each second branch extends towards the first conductor, and a second gap is left between its extending end and the first conductor.

[0015] In some embodiments, the first branches and the second branches are alternately arranged.

[0016] In some embodiments, the microwave heating assembly further includes a fixing base, and the accommodating cavity is formed in the fixing base;

[0017] The fixing base includes an end wall located at the closed end for supporting the aerosol generating matrix;

[0018] The fixing base further includes an accommodating area for accommodating the aerosol generating matrix, and the accommodating area is formed in the accommodating cavity;

[0019] The first conductor and / or the second conductor includes a first radiation section and a second radiation section; the second radiation section is bent at one end of the first radiation section and extends towards the accommodating area and is located on the end wall.

[0020] In some embodiments, the first conductor and / or the second conductor is longitudinally arranged; the first conductor and / or the second conductor is attached to the substrate;

[0021] And / or, the substrate includes a rigid substrate or a flexible substrate;

[0022] And / or, both the first conductor and the second conductor include a radiation structure at least partially extending towards the closed end; the first conductor and / or the second conductor includes an impedance matching structure at least partially located at the open end;

[0023] And / or, the microwave heating component further includes a fixing base, and the accommodating cavity is formed in the fixing base; an installation groove for installing the inner conductor unit is provided on the inner side wall of the fixing base.

[0024] The present invention also constructs an aerosol generating device, including the microwave heating component of the present invention, a microwave feeding unit connected to the inner conductor unit of the microwave heating component, and a microwave generating unit connected to the microwave feeding unit.

[0025] In some embodiments, the base material of the inner conductor unit further includes a second surface disposed opposite to the first surface; a conductive connecting member is provided on the second surface; the conductive connecting member is connected to the first conductor of the inner conductor unit;

[0026] The microwave feeding unit includes an outer conductor and an inner conductor; the outer conductor is connected to the first conductor of the inner conductor unit; the inner conductor is connected to the conductive connecting member and then connected to the second conductor.

[0027] Implementing the aerosol generating device and the microwave heating component of the present invention has the following beneficial effects: The microwave heating component extends the first conductor and the second conductor of the inner conductor unit in the first direction and leaves a gap between them in the second direction. A microwave radiation area is formed through this gap, thereby improving the formed heating uniformity, avoiding burning of the aerosol generation matrix, and improving the suction taste. Description of the Drawings

[0028] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

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

[0030] Figure 2 is Figure 1 a partial structural cross-sectional view of the aerosol generating device shown;

[0031] Figure 3 is Figure 2 a structural schematic diagram of the outer conductor unit of the aerosol generating device shown;

[0032] Figure 4 is Figure 2 a structural schematic diagram of the fixing base of the aerosol generating device shown;

[0033] Figure 5 is Figure 4 a cross-sectional view of the fixing base shown;

[0034] Figure 6 is Figure 2 a structural schematic diagram of the inner conductor unit of the aerosol generating device shown;

[0035] Figure 7 is Figure 2 An enlarged schematic view of a partial structure of the inner conductor unit of the aerosol generating device shown;

[0036] Figure 8 is Figure 6 A schematic view of a partial structure of the inner conductor unit shown;

[0037] Figure 9 is Figure 1 An electric field nephogram of the inner conductor unit in the aerosol generating device shown;

[0038] Figure 10 An electric field nephogram of a conventional inner conductor;

[0039] Figure 11 is Figure 1 A reflection curve graph of the inner conductor unit in the aerosol generating device shown;

[0040] Figure 12 A reflection curve graph of a conventional inner conductor;

[0041] Figure 13 A partial structure cross-sectional view of the aerosol generating device in the second embodiment of the present invention;

[0042] Figure 14 is Figure 13 A schematic view of the structure of the inner conductor unit shown;

[0043] Figure 15 An electric field nephogram of the first conductor and the second conductor with a gap of 0.4 mm;

[0044] Figure 16 An electric field nephogram of the first conductor and the second conductor with a gap of 0.2 mm. Specific embodiments

[0045] In order to have a clearer understanding of the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "upper", "lower", "longitudinal", "transverse", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are specific orientations for construction and operation. They are only for the convenience of describing the present technical solution, rather than indicating that the devices or elements referred to must have a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0046] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "connection", "fixation", "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. When a component is referred to as "on" or "under" another component, the component can be "directly" or "indirectly" located above the other component, or there may also be one or more intermediate components. Terms such as "first", "second", etc. are only for the convenience of describing the technical solution of the present invention, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Figure 1 A first embodiment of the aerosol generating device of the present invention is shown. The aerosol generating device can generate aerosol for the user to inhale by feeding microwave to heat the aerosol generating substrate. The aerosol generating substrate can be detachably arranged in the aerosol generating device. In some embodiments, the aerosol generating substrate is columnar. Specifically, the aerosol generating substrate can be cylindrical and can be a solid material in the form of filaments, granules or flakes made from the leaves, flowers and / or stems of plants, and fragrance components can be further added to the solid material.

[0048] As Figure 1 shown, in this embodiment, the aerosol generating device can include a housing (not shown), a microwave heating component and a microwave generating unit (not shown). The microwave heating component is housed in the housing (not shown) and is used to generate a microwave resonance inside it to form an energy field after accessing the microwave, thereby heating the aerosol generating substrate. The microwave generating unit (not shown) can be connected to the microwave heating component and is used to feed the microwave.

[0049] As Figure 1 and Figure 2As shown, in this embodiment, the microwave heating assembly may include an outer conductor unit 10, a fixing base 20, and an inner conductor unit 30. The outer conductor unit 10 is for the fixing base 20 to be received therein. The fixing base 20 is disposed in the outer conductor unit 10 and is used to fix the aerosol generating substrate. The inner conductor unit 30 is at least partially installed in the outer conductor unit 10. Specifically, at least part of it is installed in the fixing base 20 and can be used to feed microwaves into the outer conductor unit 10 and further into the fixing base 20. Then, with the cooperation of the outer conductor unit 10 and the inner conductor unit 30, microwave resonance heating of the aerosol generating substrate can be generated in the outer conductor unit 10. In some embodiments, the fixing base 20 can be omitted. The inner conductor unit 30 can be directly installed in the outer conductor unit 10.

[0050] As Figure 3 shown, in this embodiment, the outer conductor unit 10 is processed from a metal material or other highly conductive materials. Exemplarily, the outer conductor unit 10 can be made of gold, silver, copper, aluminum, iron, gold-containing alloy, aluminum-containing alloy, copper-containing alloy, iron-containing alloy, stainless steel, etc., or the outer conductor unit includes a matrix layer made of a non-metallic material and a metal coating coated on the inner surface of the matrix layer. In this embodiment, the outer conductor unit 10 can be processed from an aluminum alloy.

[0051] In this embodiment, the outer conductor unit 10 is generally cylindrical, having an open end 10a and a closed end 10b, and the open end 10a and the closed end 10b are oppositely arranged. The open end 10a can be open, and the closed end 10b can be closed. The inside of the outer conductor unit 10 is hollowly arranged to define a cavity 11, and the cavity 11 is formed between the open end 10a and the closed end 10b. The cavity 11 is a columnar cavity for receiving the fixing base 20 or directly receiving the aerosol generating substrate.

[0052] As Figure 4 and Figure 5As shown, in this embodiment, the outer conductor unit 10 has a receiving cavity 21, and the receiving cavity 21 is defined in the outer conductor unit 10 by arranging a fixing seat 20. Specifically, the receiving cavity 21 is formed in the fixing seat 20. In some other embodiments, the receiving cavity 21 may be a cavity 11. The fixing seat 20 may be generally cylindrical, and may be formed by splicing two seat bodies oppositely arranged in the transverse direction of the outer conductor unit 10, or may be a cylinder, and its height may be equivalent to the height of the cavity 11, and the cross-sectional shape and size thereof may be adapted to the cross-sectional shape and size of the cavity 11. The fixing seat 20 can be used to fix the aerosol generation matrix, and can isolate the heat from being transmitted outwards, improve the heating stability and improve the heating efficiency. In some embodiments, the fixing seat 20 can be made of a lossless or low-loss dielectric material. Exemplarily, the fixing seat 20 is made of Teflon, PEEK, quartz, alumina ceramic, various composite wave-transparent materials, etc. In some embodiments, the fixing seat 20 further includes a first end portion 21a and a first end portion 21b. The first end portion 21a is located at the open end 10a. The first end portion 21b is located at the closed end 10b. The first end portion 21a and the first end portion 21b are oppositely arranged. The first end portion 21a has an opening, which can be used for loading the aerosol generation matrix.

[0053] In this embodiment, the receiving cavity 21 may be columnar, and as a whole, it can form a receiving area for receiving the aerosol generation matrix. The receiving cavity 21 can be divided into a first chamber 211 and a second chamber 212 that communicate with each other between the open end 10a and the closed section 21b. Among them, the first end portion 21a is formed at one end of the first chamber 211, and the first end portion 21b is formed at one end of the second chamber 212. The first chamber 211 is used to provide an impedance matching space; the second chamber 212 is used to access microwaves and is a microwave resonance space. In some embodiments, the number of chambers in the receiving cavity 21 is not limited to two, and can be one, or can be multiple, and their relative positions are not limited to up and down, and can also be left and right.

[0054] The fixing base 20 may include an end wall 22 and a side wall 23. The end wall 22 can be used to support and fix the aerosol generation matrix. The side wall 23 is disposed on the end wall 22 and can cooperate with the end wall 22 to define the accommodation cavity 21. An installation groove 24 is provided inside the side wall 23 of the fixing base 20. The installation groove 24 extends from the first end 21a to the second end 21b. The installation groove 24 is used for installing and fixing the inner conductor unit 30 to ensure the accuracy of the heating position. In some embodiments, the shape of the installation groove 24 may correspond to the shape of the inner conductor unit 30. The installation groove 24 may include a first accommodation portion 241 and a second accommodation portion 242. The first accommodation portion 241 is located in the first chamber 211, and the second accommodation portion 242 is located in the second chamber 212. The depth of the first accommodation portion 241 is greater than the depth of the second accommodation portion 242, and the width of the first accommodation portion 241 is greater than the width of the second accommodation portion 242. The first accommodation portion 241 and the second accommodation portion 242 are arranged in a stepped manner, and the plane where the connection between the first accommodation portion 241 and the second accommodation portion 242 is located forms a partition surface between the first chamber 211 and the second chamber 212.

[0055] By providing the fixing base 20, the relative positions of the aerosol generation matrix and the inner conductor unit 30 during heating can be ensured to remain unchanged, thereby ensuring the consistency and stability of heating. At the same time, it can effectively prevent the aerosol generation matrix from leaking onto the microwave heating component, resulting in the failure of the microwave heating component, and it is also convenient for users to clean the oil stain pollution caused by repeated suction.

[0056] As Figure 6 and Figure 7 As shown, the inner conductor unit 30 may include a base material 31. The base material 31 extends in a first direction from the open end 10a to the closed end 10b. In this embodiment, the base material 31 may be a flexible base material, such as a PI film. In some other embodiments, the base material 31 may also be a rigid base material, such as a conventional PCB base material. The base material 31 may be in a sheet shape and may be longitudinally arranged. The base material 31 may be a single longitudinally arranged base material 31, or may be a plurality of base materials 31 arranged side by side from the open end 10a towards the closed end 10b. In some embodiments, the base material 31 includes a first surface 311 and a second surface 312 arranged opposite to each other; the first surface 311 faces the aerosol generation matrix. Specifically, the first direction is the direction in which the length of the base material 31 is located, and the second direction is perpendicular to the first direction and parallel to the first surface 311, that is, the second direction may be the direction in which the width of the base material 31 is located.

[0057] In this embodiment, the inner conductor unit 30 further includes a conductor 32, and the conductor 32 may include a first conductor 32a and a second conductor 32b. Both the first conductor 32a and the second conductor 32b are disposed on a first surface 311 of the substrate 31, and both extend in a first direction. In a second direction, a gap 33 is provided between the two, and the gap 33 can form a microwave radiation region, so that microwaves can act on the aerosol generation matrix efficiently and rapidly in a directional manner in this narrow region, which is beneficial to improving the heating uniformity, and further beneficial to meeting the user's needs. By providing the gap 33, the first conductor 32a and the second conductor 32b are arranged without contact with each other.

[0058] In this embodiment, the first conductor 32a may be a metal material or other materials with high electrical conductivity, such as gold, silver, copper, aluminum, iron, gold-containing alloy, aluminum-containing alloy, copper-containing alloy, iron-containing alloy, or stainless steel, etc. In some other embodiments, the first conductor 32a may include a non-metallic matrix and a metal coating coated on the non-metallic matrix, such as stainless steel plated with gold. In some other embodiments, the first conductor 32a may also extend from a position at a set distance from the open end 10a to the closed end 10b.

[0059] In this embodiment, the first conductor 32a is a longitudinally long sheet, and can be attached to the substrate 31 in a patch manner and can be generally in a Z shape. It can be understood that in some other embodiments, the first conductor 32a is not limited to being in a Z shape. In some embodiments, the first conductor 32a includes a first end 3201 and a second end 3202 in the length direction; wherein the first end 3201 may be located at the open end 10a, and a section of the second conductor 32b near the second end 3202 is bent and located on the end wall 22.

[0060] Specifically, in this embodiment, the first conductor 32a may include a radiation structure 321 and an impedance matching structure 322. In some embodiments, the radiation structure 321 and the impedance matching structure 322 may be integrally formed. Of course, it can be understood that in some other embodiments, the radiation structure 321 and the impedance matching structure 322 may be a split structure. The radiation structure 321 can be used to radiate microwaves. The impedance matching structure 322 can be used for impedance matching. It should be noted that the meaning of impedance matching is that the characteristic impedance of the transmission line is equal to the load impedance in magnitude and the same in phase. At this time, the energy on the transmission line is transmitted to the load with almost no reflection.

[0061] The radiation structure 321 of the first conductor 32a can extend from the junction of the first chamber 211 and the second chamber 212 to the bottom of the second chamber 212. The radiation structure 321 of the first conductor 32a can be generally L-shaped, and it can be a rectangle with a cross-sectional length of 0.6 mm and a thickness of 45 microns. It can include a first radiation section 3211 and a second radiation section 3212. The first radiation section 3211 can be set straight, and it can extend from the junction of the first chamber 211 and the second chamber 212 to the bottom of the second chamber 212. The second radiation section 3212 is connected to the first radiation section 3211 and is bent at an angle with the first radiation section 3211. Specifically, the second radiation section 3212 and the first radiation section 3211 can be set at a right angle. By bending the radiation structure 321 of the first conductor 32a into an L-shaped structure, the bottom of the aerosol generation matrix can be heated, and the microwave radiation area of the inner conductor unit 30 can be increased. In some other embodiments, the first conductor 32a can be bent arbitrarily to realize applications in different scenarios.

[0062] The impedance matching structure 322 can extend from the open end 10a to the first chamber 211 and extend to be connected to the radiation structure 321. In some embodiments, the impedance matching structure 322 can be connected to the microwave feeding unit 40. In some embodiments, the impedance matching structure 322 can include a first impedance matching section 3221 and a second impedance matching section 3222. The first impedance matching section 3221 can extend from the open end 10a to the junction of the first chamber 211 and the second chamber 212 and is connected to the first radiation section 311. The second impedance matching section 3222 is located at the open end 10a and extends outward and is bent with the first impedance matching section 3221. The width of the second impedance matching section 3222 can be greater than the width of the first impedance matching section 3221. The second impedance matching section 3222 can be connected to the microwave feeding unit 40.

[0063] In this embodiment, in the second direction, a plurality of first branches 3213 can be arranged on the side of the first conductor 32a facing the second conductor 32b. Specifically, the first branches 3213 are arranged on the side of the radiation structure 321 of the first conductor 32a facing the second conductor 32b. The plurality of first branches 3213 can be arranged at intervals along the extending direction of the first conductor 32a, and each first branch 3213 can extend along the second direction toward the second conductor 32b, and there is a first gap between the extending end of each first branch 3213 and the second conductor 32b, that is, the first branch 3213 is not in contact with the second conductor 32b. In some other embodiments, the first branches 3213 can be omitted. In some embodiments, a plurality of first grooves or first notches can be formed on the side of the first conductor 32a and the second conductor 32b facing each other, thereby forming the plurality of first branches 3213.

[0064] In this embodiment, the second conductor 32b may be located in the second chamber 212, extend from a set distance away from the open end 10a towards the closed end 10b, and extend to the end wall 22. Specifically, it may extend from the junction of the first chamber 211 and the second chamber 212 towards the closed end 10b. The second conductor 32b may be made of a metallic material or other highly conductive materials, such as gold, silver, copper, aluminum, iron, gold-containing alloys, aluminum-containing alloys, copper-containing alloys, iron-containing alloys, or stainless steel, etc. In some other embodiments, the second conductor 32b may include a non-metallic substrate and a metal coating coated on the non-metallic substrate, such as stainless steel plated with gold.

[0065] In this embodiment, the second conductor 32b is in the shape of a longitudinally long sheet, and may be attached to the substrate 31 in a patch manner and may be generally in a Z shape. It can be understood that in some other embodiments, the second conductor 32b may not be limited to a Z shape. In some embodiments, the second conductor 32b includes a third end 3203 and a fourth end 3204 in the length direction; wherein the third end 3203 is located at the junction of the first chamber 211 and the second chamber 212, and a section of the second conductor 32b near the fourth end 3202 is bent and located on the end wall 22.

[0066] Specifically, in this embodiment, the second conductor 32b may only include a radiation structure 321. The radiation structure 321 can be used to radiate microwaves. The radiation structure 321 of the second conductor 32b and the radiation structure 321 of the first conductor 32b are arranged side by side and at intervals, extend in the same direction, and the radiation structure 321 of the second conductor 32b is also generally in an L shape, and it may be a rectangle with a length of 0.6 mm and a thickness of 45 μm in cross section. The radiation structure 321 of the second conductor 32b may extend from the junction of the first chamber 211 and the second chamber 212 to the bottom of the second chamber 212 in the second chamber 212. The radiation structure 321 of the second conductor 32b may include a first radiation segment 3211 and a second radiation segment 3212. The first radiation segment 3211 may be straight and may extend from the junction of the first chamber 211 and the second chamber 212 to the bottom of the second chamber 212. The second radiation segment 3212 is connected to the first radiation segment 3211 and is bent at an angle with the first radiation segment 3211. Specifically, the second radiation segment 3212 and the first radiation segment 3211 may be at a right angle.

[0067] In this embodiment, in the second direction, a plurality of second branches 3214 are provided on one side of the second conductor 32b facing the first conductor 32a, and the plurality of second branches 3214 can be arranged at intervals along the extending direction of the second conductor 32b. And each second branch 3214 can extend from the second direction of the second conductor 32b towards the first conductor 32a, and a second gap is provided between its extending end and the first conductor 32a. By providing this second gap, it can be ensured that the second branch 3214 is arranged without contact with the first conductor 32a. In some embodiments, a second groove or a second notch can be formed on the side of the second conductor 32b opposite to the first conductor 32a, so as to form a plurality of second branches 3214. In some other embodiments, the second branches 3214 can be omitted.

[0068] In this embodiment, the first branches 3213 and the second branches 3214 can be alternately arranged to form a meandering interdigital structure, so as to increase additional capacitance and inductance, and slightly reduce the length of the inner conductor unit 30 required at the same resonant frequency, which is beneficial to the miniaturized design of the cavity 11 and is also beneficial to the miniaturized design of the overall size.

[0069] In some other embodiments, the cross-sectional shapes of the first conductor 32a and the second conductor 32b are not limited to rectangles, and can also be circular, and can be straight cuboids. The shapes of the first branches 3213 and the second branches 3214 can be the same or different, and the plurality of first branches 3213 can be arranged at equal or unequal intervals, and the second branches 3214 can also be arranged at equal or unequal intervals.

[0070] In this embodiment, the slit 33 can extend from a position having a set distance from the open end 10a towards the closed end 10b. For example, it can extend from the junction of the first chamber 211 and the second chamber 212 towards the closed end 10b, and extend on the end wall 22 located at the closed end 10b.

[0071] Such as Figure 8As shown, the size of the gap 33 can be configured to be adjusted according to the heating requirement. Specifically, in the second direction, the substrate 31 has a first dimension D1; the first conductor 32a has a second dimension D2, and the second conductor 32b has a third dimension D3; the gap 33 has a fourth dimension D4, and the fourth dimension D4 can be greater than zero and less than or equal to the difference between the first dimension D1 minus the second dimension D2 and the third dimension D3. Compared with the vertical round pin structure of the inner conductor unit 30 in the related art, in different application scenarios, by setting the size of the gap between the different first conductors 32a and the second conductors 32b, the size of the microwave radiation area can be adjusted. For example, when the gap size is increased, the corresponding microwave radiation area will also be increased accordingly. In addition, when the dimensions of the first conductor 32a and the second conductor 32b and the size of the gap 33 are comparable, it may cause the inner conductor unit 30 to have multiple mutually switchable operating modes. For example, the inner conductor unit 30 can have a common mode and a differential mode. The mixing of these modes will cause the radiation field distribution of the inner conductor unit 30 to become more uniform, improving the electric field non-uniformity caused by only one strong electric field region at the terminal of the round pin inner conductor unit 30, thereby solving the problem that the aerosol generation matrix is prone to caking locally. In some embodiments, the fourth dimension D4 of the gap 33 can be 0.2 mm to 0.4 mm (including the end values 0.2 mm and 0.4 mm).

[0072] In this embodiment, a conductive connection member 34 is provided on the second surface 312 of the substrate 31. The conductive connection member 34 can be in a sheet shape and is a conductive metal sheet. It can be attached to the second surface 312 and connected to the second conductor 32b.

[0073] In this embodiment, the aerosol generating device further includes a microwave feeding unit 40, which can be installed on the side wall of the outer conductor unit 10. Specifically, the microwave feeding unit 40 can be located at the open end 10a and is connected to the inner conductor unit 30. Specifically, the microwave feeding unit 40 can include an outer conductor 41 and an inner conductor 42 partially located in the outer conductor 41. The outer conductor 41 can abut against one end of the substrate 31 and is connected to the conductive connecting member 34, and then connected to the second conductor 32b. The inner conductor 42 is coaxially arranged with the outer conductor 41, and the inner conductor 42 can extend from one end of the outer conductor 41 to be connected to the impedance matching structure 322 on the first conductor 32a, so that the microwave generated by the external circuit can be fed into the accommodation cavity 21 through the microwave feeding unit 40. In some embodiments, the microwave feeding unit 40 can be composed of a standard or non-standard RF connector, which is embedded in the side wall of the outer conductor unit 10 through threads or flanges. It can be connected to the microwave generating unit for feeding the microwave generated by the microwave generating unit into the inner conductor unit 30 and then into the accommodation cavity 21 through the inner conductor unit 30. At the same time, it can isolate the external circuit from the accommodation cavity 21 to prevent microwave leakage to the external circuit, resulting in the failure of the external circuit. Specifically, in some embodiments, the microwave feeding unit 40 can be a standard SMP-JYD RF connector. The microwave is fed into the inner conductor unit 30 through the microwave feeding unit 40, and then transmitted along the first conductor 32a and the second conductor 32b to the second chamber 212, and radiates energy to the aerosol generation matrix located in the accommodation cavity 21. The aerosol generation matrix can be quickly heated to 250° to 350°, and the generated aerosol enters the human body through the user's suction action.

[0074] As Figure 9 and Figure 10 It can be seen from the comparison that compared with the inner conductor in the shape of a single needle, the electric field formed by the inner conductor unit 30 of the aerosol generating device in this embodiment in the second chamber 212 is more uniform.

[0075] As Figure 11 and Figure 12 It can be seen from the comparison that the inner conductor unit 30 of the aerosol generating device has the same microwave reflection performance as the conventional inner conductor in the shape of a single needle.

[0076] Figure 13 and Figure 14 The second embodiment of the aerosol generating device of the present invention is shown. The difference from the first embodiment is that the first branch 3213 on the first conductor 32a and the second branch 3214 on the second conductor 32b can be omitted.

[0077] Table 1 Comparison of Electric Field Simulation Values

[0078]

[0079]

[0080] As Figure 15 、 Figure 16 and Table 1 show,

[0081] (1) Microwaves are radiated in the gap between the two conductors, enabling the microwaves to act directionally on the narrow area, achieving an effect similar to that of a conventional inner conductor; in addition, by setting different gaps between the two conductors, the heating area range can be adjusted;

[0082] (2) The average peak electric field of the heating sector of the conventional inner conductor is relatively high, while the average peak electric field ratio of the main heating sector of the inner conductor unit in the present invention drops significantly;

[0083] (3) The inner conductor unit in the present invention can also achieve a reflection coefficient level similar to that of the conventional inner conductor, and the energy utilization rate is not reduced;

[0084] (4) The inner conductor unit of the present invention can effectively heat the bottom of the medium and has a larger heating range.

[0085] It can be understood that the above embodiments only represent the preferred embodiments of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention patent; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can also be made, which all belong to the protection scope of the present invention; therefore, all equivalent transformations and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A microwave heating component, characterized in that, Comprising: An outer conductor unit (10) having an accommodation cavity (21) inside, the outer conductor unit (10) including an open end (10a) and a closed end (10b); the open end (10a) and the closed end (10b) are oppositely arranged; An inner conductor unit (30), at least partially installed in the accommodation cavity (21), including a base material (31), a first conductor (32a) and a second conductor (32b) extending from the open end (10a) towards the closed end (10b); the base material (31) includes a first surface (311) facing the aerosol - generating matrix; The first conductor (32a) and the second conductor (32b) are both arranged on the first surface (311) and a gap (33) is left between them, and the gap (33) forms a microwave radiation area.

2. The microwave heating component according to claim 1, characterized in that, The base material (31) extends in a first direction from the open end (10a) towards the closed end (10b), the first conductor (32a) and the second conductor (32b) extend along the first direction on the base material (31), and in a second direction perpendicular to the first direction and parallel to the first surface (311), the first conductor (32a) and the second conductor (32b) have the gap (33).

3. The microwave heating component according to claim 1, characterized in that, The gap (33) extends from a position having a set distance from the open end (10a) towards the closed end (10b); And / or, the first conductor (32a) extends from the open end (10a) towards the closed end (10b); And / or, the second conductor (32b) extends from a position having a set distance from the open end (10a) towards the closed end (10b).

4. The microwave heating component according to claim 2, characterized in that, In the second direction, the base material (31) has a first dimension, the first conductor (32a) has a second dimension, the second conductor (32b) has a third dimension, and the gap (33) has a fourth dimension; The fourth dimension is greater than zero and less than or equal to the difference between the first dimension minus the second dimension and the third dimension.

5. The microwave heating component according to claim 2, characterized in that, In the second direction, a plurality of first branches (3213) are arranged on the first conductor (32a), the plurality of first branches (3213) are spaced along the extending direction of the first conductor (32a), and each first branch (3213) extends towards the second conductor (32b), and a first gap is left between its extending end and the second conductor (32b); And / or, in the second direction, a plurality of second branches (3214) are arranged on the second conductor (32b), the plurality of second branches (3214) are spaced along the extending direction of the second conductor (32b), and each second branch (3214) extends towards the first conductor (32a), and a second gap is left between its extending end and the first conductor (32a).

6. The microwave heating component according to claim 5, characterized in that, The first branches (3213) and the second branches (3214) are alternately arranged.

7. The microwave heating component according to claim 1, characterized in that, The microwave heating assembly further includes a fixing base (20), and the accommodation cavity (21) is formed in the fixing base (20); The fixed seat (20) includes an end wall (22) located at the closed end (10b) for supporting the aerosol - generating substrate; The fixed seat (20) further includes a receiving area for receiving the aerosol - generating substrate, and the receiving area is formed in the receiving cavity (21); The first conductor (32a) and / or the second conductor (32b) includes a first radiation section (3211) and a second radiation section (3212); the second radiation section (3212) is bent and arranged at one end of the first radiation section (3211), extends towards the receiving area, and is located on the end wall (22).

8. The microwave heating component according to claim 1, characterized in that, The first conductor (32a) and / or the second conductor (32b) is longitudinally arranged; the first conductor (32a) and / or the second conductor (32b) is attached to the substrate (31); and / or, the substrate (31) includes a rigid substrate or a flexible substrate; Both the first conductor (32a) and the second conductor (32b) include at least a part of a radiation structure (321) extending towards the closed end (10b); the first conductor (32a) includes at least a part of an impedance - matching structure (322) located at the open end (10a); and / or, the microwave heating assembly further includes a fixed seat (20), and an installation groove (24) for installing the inner - conductor unit (30) is arranged on the inner side wall of the fixed seat (20).

9. An aerosol generating device, characterized in that, It includes the microwave heating assembly according to any one of claims 1 to 8, a microwave feeding unit (40) connected to the inner - conductor unit (30) of the microwave heating assembly, and a microwave generating unit connected to the microwave feeding unit (40).

10. The aerosol generating device according to claim 9, characterized in that, The substrate (31) of the inner - conductor unit (30) further includes a second surface (312) opposite to the first surface (311); a conductive connecting piece (34) is arranged on the second surface (312); the conductive connecting piece (34) is connected to the first conductor (32a) of the inner - conductor unit (30); The microwave feeding unit (40) includes an outer conductor (41) and an inner conductor (42); the inner conductor (42) is connected to the first conductor (32a) of the inner - conductor unit (30); the outer conductor (41) is connected to the conductive connecting piece (34), and thus is connected to the second conductor (32b).

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