Aerosol generating device and microwave heating assembly thereof

Abstract

The aerosol generating device and its microwave heating assembly (1) comprise an outer conductor unit (11) having a cylindrical shape and including a first open end (112) and a second open end (113) opposite to the first open end (112), and an inner conductor unit (12) disposed within the outer conductor unit (11) and defining a receiving space (124) for receiving an aerosol-generating product (2). The inner conductor unit (12) has a first fixed end (121) and a first free end (122). ), a first fixed end (121) is connected to the end wall of the first open end (112), a first free end (122) extends to the second open end (113), and an accommodating space (124) is interposed between the first fixed end (121) and the first free end (122). The microwave heating assembly (1) does not require a accommodating seat that is directly fixed to the outer conductor unit (11), which can prevent heat from being transferred directly to the outer conductor unit (11) through the accommodating seat, and can further improve the heat dissipation effect.

Description

[Technical Field]

[0001] The present invention relates to the technical field of electronic atomization, and in particular to an aerosol generating device and its microwave heating assembly. [Background technology]

[0002] In related art, a microwave-heated aerosol generator includes a microwave heating assembly, which includes an outer conductor unit, an inner conductor pole, a receiving seat, and a probe unit. The outer conductor unit is cylindrical and includes opposite closed and open ends. One end of the inner conductor pole is coaxially fixed to the closed end of the outer conductor unit, and the other end extends to the open end of the outer conductor unit. The receiving seat is attached to the open end of the outer conductor unit and has a receiving chamber installed within the outer conductor unit, for holding an aerosol-generating product. One end of the probe unit is fitted into the end extending to the open end of the inner conductor pole, and the other end extends to the open end of the outer conductor unit and is inserted into the receiving chamber, thereby emitting microwaves.

[0003] However, when the receiving seat is attached to the open end of the outer conductor unit, the entire microwave heating assembly has a nearly sealed structure, which is unfavorable for heat dissipation. Furthermore, during microwave heating, a significant portion of the generated heat is conducted to the outer conductor unit through the receiving seat, resulting in a higher case temperature of the outer conductor unit, which in turn affects the temperature distribution of the entire aerosol generator, the microwave supply efficiency, and the user's inhalation experience. Summary of the Invention [Problem to be solved by the invention]

[0004] The technical problem that the present invention seeks to solve is to provide an improved aerosol generating device and microwave heating assembly thereof. [Means for solving the problem]

[0005] The technical solution used by the present invention to solve the technical problem is to construct a microwave heating assembly for use in an aerosol generating device to heat an aerosol-generating product, the microwave heating assembly comprising: an outer conductor unit having a cylindrical shape and including a first open end and a second open end opposite to the first open end; an inner conductor unit disposed within the outer conductor unit and defining a storage space for storing the aerosol-generating product; The inner conductor unit includes a first fixed end and a first free end, the first fixed end is connected to the end wall of the first opening end, the first free end extends to the second opening end, and the accommodating space is interposed between the first fixed end and the first free end.

[0006] In some embodiments, the accommodating space is penetrated by the inner conductor unit along the vertical direction.

[0007] In some embodiments, the first fixed end is integrally coupled to an end wall of the first open end.

[0008] In some embodiments, the inner conductor unit includes at least two extending portions, the at least two extending portions are disposed on the outer conductor unit at intervals along a circular path, and the accommodating space includes a passage formed between the at least two extending portions; Each of the extensions includes a second fixed end and a second free end, the second fixed end being integrally connected to an end wall of the first open end, and the second free end extending to the second open end.

[0009] In some embodiments, the extension portion has a vertically elongated shape, and the extension direction is parallel to the axial direction of the outer conductor unit.

[0010] In some embodiments, the at least two extensions include walls adapted to fit tightly against the outer periphery of the aerosol-generating product.

[0011] In some embodiments, the shape of the extension comprises a longitudinal arc, a vertical bar, a curved shape, or at least one combination thereof.

[0012] In some embodiments, the at least two extensions include at least two pairs of extensions having unequal lengths, and the at least two pairs of extensions are alternately and uniformly arranged in a ring shape within the outer conductor unit.

[0013] In some embodiments, the outer conductor unit has a cylindrical shape and a first end and a second end opposite to each other, the first end and the second end both having an open structure, and the second end forming the second open end; and and a first end wall that is closed at a first end of the conductor side wall and has a through hole that penetrates in the axial direction to form the first open end.

[0014] In some embodiments, the diameter of the through-holes is slightly larger than or equal to the diameter of the aerosol-generating product.

[0015] In some embodiments, at least two extensions are equally spaced circumferentially around the through hole.

[0016] In some embodiments, the outer conductor unit includes a longitudinal axis, and a side surface of the extension portion facing the longitudinal axis is flush with an edge of the through hole.

[0017] In some embodiments, the inner conductor unit further includes a conductor portion; The conductor portion is cylindrical and includes a first end face and a second end face facing each other, the first end face is integrally connected to the end wall of the first opening end, second fixed ends of the at least two extension portions are respectively integrally connected to the second end face, a central passage of the conductor portion communicates with the first opening end, and the accommodating space further includes a central passage of the conductor portion.

[0018] In some embodiments, the conductor portion has a cylindrical shape.

[0019] In some embodiments, the conductor portion is coaxial with the outer conductor unit.

[0020] In some embodiments, the inner diameter of the conductor portion is equal to or slightly larger than the diameter of the aerosol-generating product.

[0021] In some embodiments, the microwave heating assembly further comprises a temperature measurement assembly for measuring temperature, the temperature measurement assembly being fitted into one of the extensions.

[0022] In some embodiments, the microwave heating assembly includes a receiving cavity for receiving the temperature measurement assembly; The receiving hole is a blind hole that penetrates the first end wall along a direction parallel to the axis of the outer conductor and extends to the second free end of the corresponding extension portion where the electric field intensity is highest.

[0023] In some embodiments, the inner conductor unit further includes an openwork portion provided on the conductor portion and / or the extension portion.

[0024] In some embodiments, the shape of the openwork includes a circular, angular, or curved shape.

[0025] In some embodiments, the microwave heating assembly comprises: a receiving seat attached to the inner conductor unit, the receiving seat including a first closed end and a third open end opposite to each other, the first closed end being located between the second free end and the second open end, the third open end extending to the first open end and communicating with the first open end; The receiving seat further includes a receiving chamber interposed between the first closed end and the third open end, the receiving chamber being adapted to receive the aerosol-generating product.

[0026] In some embodiments, the receiving seat is fitted around the outer periphery of the at least two extending portions, and the side and bottom surfaces of the at least two extending portions are bonded to the inner wall surfaces of the receiving seat, respectively.

[0027] In some embodiments, the receiving seat is installed in the receiving space, the at least two extensions surround the outer periphery of the receiving seat, and the side surfaces of the at least two extensions are attached to the outer side wall of the receiving seat.

[0028] In some embodiments, at least two locking grooves are provided on a side wall of the receiving seat corresponding to the positions of the at least two extension portions, and the at least two locking grooves extend through an end surface of the third open end to the first closed end, respectively; The receiving seat is engaged with the at least two extending portions by the at least two locking grooves and is fitted into the inner conductor unit.

[0029] In some embodiments, the first closed end has an inner end surface facing toward the first open end; The inner end surface is intended to abut against the bottom end surface of the aerosol-generating product, and when the bottom end surface abuts against the inner end surface, an air intake gap is formed between the bottom end surface and the inner end surface.

[0030] In some embodiments, the microwave heating assembly further comprises a microwave supply unit, the microwave supply unit comprising: an outer conductor having a cylindrical shape, fitted into a side wall of the outer conductor unit, and in ohmic contact with the outer conductor unit; an inner conductor having a straight line shape, disposed within the outer conductor, the inner conductor extending into the outer conductor unit and in ohmic contact with the inner conductor unit; a medium layer interposed between the inner conductor and the outer conductor.

[0031] The present invention further provides an aerosol generating device comprising a microwave generating device, the aerosol generating device further comprising the above-mentioned microwave heating assembly, the microwave heating assembly being connected to the microwave generating device and in ohmic contact with the microwave generating device. [Effects of the Invention]

[0032] The present invention has the following beneficial effects: the microwave heating assembly according to the present invention has an inner conductor unit formed with a receiving space for receiving an aerosol-generating product, eliminating the need for a receiving seat fixed directly to the outer conductor unit, and preventing heat from being directly transferred to the outer conductor unit via the receiving seat, thereby preventing the temperature of the outer conductor unit from becoming too high;

[0033] At the same time, the outer conductor unit includes a second open end, which is installed so that the entire microwave heating assembly is open, thereby improving the heat dissipation effect and improving the temperature distribution of the entire aerosol generating device, microwave supply efficiency, and user experience. [Brief explanation of the drawings]

[0034] The invention will now be further described by way of example with reference to the drawings, in which: [Figure 1] FIG. 1 is a schematic diagram of the external structure of a microwave heating assembly according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a longitudinal structural cross-sectional view of the microwave heating assembly shown in FIG. [Figure 3] FIG. 3 is a longitudinal structural cross-sectional view of the microwave heating assembly shown in FIG. 1 in an exploded state. [Figure 4] FIG. 4 is a structural perspective view of an outer conductor unit and a first inner conductor unit that are integrally coupled together according to the first embodiment of the present invention. [Figure 5] FIG. 5 is a structural schematic diagram of the first housing seat according to the first embodiment of the present invention. [Figure 6] FIG. 6 is a diagram showing scattering parameters when the microwave heating assembly according to Example 1 of the present invention performs initial heating after an aerosol-generating product is inserted. [Figure 7] FIG. 7 is a diagram showing scattering parameters when the microwave heating assembly according to Example 1 of the present invention performs heating and suction after an aerosol-generating product is inserted. [Figure 8]FIG. 8 is a schematic diagram of the external structure of a microwave heating assembly according to a second embodiment of the present invention. [Figure 9] FIG. 9 is a vertical structural cross-sectional view of an outer conductor unit and a second inner conductor unit that are integrally coupled together according to a second embodiment of the present invention. [Figure 10] FIG. 10 is a structural perspective view of an outer conductor unit and a second inner conductor unit that are integrally coupled together according to a third embodiment of the present invention. [Figure 11] FIG. 11 is a vertical structural cross-sectional view of an outer conductor unit and a second inner conductor unit that are integrally coupled together according to a third embodiment of the present invention. [Figure 12] FIG. 12 is a structural perspective view of an outer conductor unit and a third inner conductor unit that are integrally coupled together according to a fourth embodiment of the present invention. [Figure 13] FIG. 13 is a vertical structural cross-sectional view of an outer conductor unit and a third inner conductor unit that are integrally coupled together according to a fourth embodiment of the present invention. [Figure 14] FIG. 14 is a vertical structural cross-sectional view of a microwave heating assembly according to a fifth embodiment of the present invention. [Figure 15] FIG. 15 is a structural schematic diagram of a second housing seat according to a fifth embodiment of the present invention. [Figure 16] FIG. 16 is a vertical structural cross-sectional view of a microwave heating assembly according to a sixth embodiment of the present invention. [Figure 17] FIG. 17 is a structural schematic diagram of a third housing seat according to a sixth embodiment of the present invention. [Explanation of symbols]

[0035] 1 Microwave Heating Assembly 2. Aerosol-generating products 11 Outer conductor unit 12 First inner conductor unit 13 Microwave supply unit 14 Containment Cell No. 1 111 Cavity 112 1st opening end 113 2nd open end 114 Conductor sidewall 115 First end wall 1141 Supply hole 1151 Through hole 121 1st fixed end 122 1st free end 123 1st extension part 124 First Containment Space 1231 2nd fixed end 1232 2nd free end 1233 Insertion hole 131 outer conductor 132 Inner conductor 133 Media layer 141 1st sealed end 142 3rd open end 143 Containment Cell 1 144 Intake clearance 145 Locking groove 125 Receiving hole 12a Second inner conductor unit 123a 2nd extension part 124a Second Containment Space 12b Third inner conductor unit 123b Third extension part 124b Third Containment Space 126b Conductor 1261b 1st end face 1262b 2nd end face 1231b 3rd fixed end 1232b 3rd free end 14a Second Detention Center 141a 2nd closed end 142a 4th open end 143a Second Containment Cell 146a Through hole 14b Third Detention Center 141b Third sealed end 142b 5th open end 143b Third Containment Cell DETAILED DESCRIPTION OF THE INVENTION

[0036] In order to more clearly understand the technical features, objectives, and effects of the present invention, the following detailed description of specific embodiments of the present invention will be given with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by "front", "rear", "up", "down", "left", "right", "longitudinal", "lateral", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are the orientations or positional relationships shown in the drawings, and the construction and operation in a specific orientation is merely for the purpose of facilitating the description of the technical solution, and does not indicate that the indicated devices or elements must necessarily have a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] It should be further explained that, unless otherwise expressly specified and limited, terms such as "attached," "coupled," "connected," "fixed," and "installed" should be understood in a broad sense, and may refer to, for example, fixed connection, detachable connection, or integral connection, mechanical connection, electrical connection, direct connection, indirect connection through an intermediate element, internal communication between two elements, or an interactive relationship between two elements. When an element is referred to as being located "above" or "below" another element, the element may be located "directly" or "indirectly" on the other element, or one or more intermediate elements may also be present. The terms "first," "second," "third," etc. are used to facilitate the explanation of the technical solution and should not be understood as indicating or implying the relative importance or the number of technical features indicated; thus, a feature qualified by "first," "second," "third," etc. may explicitly or implicitly include one or more of the feature. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0038] In the following description, for purposes of explanation and not limitation, specific details, such as particular system structures and techniques, are provided to provide a more thorough understanding of embodiments of the present invention. However, as will be appreciated by those skilled in the art, the present invention can be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present invention with unnecessary detail.

[0039] The present invention provides an aerosol-generating device that uses microwaves to heat and atomize an aerosol-generating product 2 (see FIG. 2) to generate an aerosol for inhalation by a user. The aerosol-generating product 2 is a solid aerosol-generating product 2, such as a treated plant leaf product. It will be appreciated that the aerosol-generating product 2 may also be a liquid aerosol-generating product 2.

[0040] The aerosol-generating device may include a microwave generator (not shown) and a microwave heating assembly 1 (see FIG. 1 ). The microwave generator is for generating microwaves, which can be supplied to the microwave heating assembly 1, forming a microwave field in a cavity 111 thereof, and a region of strong microwaves in the microwave field acts as a heating region on a portion of the aerosol-generating product 2 placed in the heating region.

[0041] As shown in FIG. 1, the microwave heating assembly 1 has an approximately cylindrical overall shape, but the microwave heating assembly 1 is not limited to a cylindrical shape and may have other shapes such as a rectangular pillar or an elliptical pillar.

[0042] As shown in FIG. 2 , in Example 1, the microwave heating assembly 1 may include an outer conductor unit 11, a first inner conductor unit 12 and a medium (e.g., air) provided within the outer conductor unit 11, and further includes a microwave supply unit 13 and a first receiving seat 14. The outer conductor unit 11 can define a cavity 111 as a location for microwave heating, and the first inner conductor unit 12 is coaxially installed in the cavity 111 to adjust the resonant frequency and microwave distribution in the cavity 111 and to clamp and fix the aerosol-generating product 2. The first receiving seat 14 is coaxially attached to the first inner conductor unit 12 and, in combination with the first inner conductor unit 12, completely encloses the lower structure of the aerosol-generating product 2. The microwave supply unit 13 is attached to the outer conductor unit 11 and can supply microwaves generated by a microwave generator to the outer conductor unit 11 and the first inner conductor unit 12 to form a microwave field in the cavity 111.

[0043] 3, the outer conductor unit 11 has a cylindrical shape and includes a first open end 112 and a second open end 113 facing each other, and a cavity 111 disposed between the first open end 112 and the second open end 113. The cavity 111 is cylindrical. Naturally, the outer conductor unit 11 is not limited to a cylindrical shape, and may have other shapes, such as a rectangular pillar or an elliptical pillar. The first open end 112 is for the aerosol-generating product 2 to pass through and be inserted into the cavity 111. The second open end 113 is for reducing the heat conduction of the aerosol-generating product 2 to the outer conductor unit 11 during heating, thereby reducing the heat generation level of the outer conductor unit 11 and improving the heat dissipation effect. At the same time, it can also prevent microwaves from leaking out through the second open end 113, thereby maximizing the microwave absorption by the aerosol-generating product 2.

[0044] The outer conductor unit 11 is integrally manufactured from a conductive metal material, and the metal material is preferably an aluminum alloy or copper having high electrical and thermal conductivity. It may be realized by plating a first conductive coating on the inner wall surface of a non-conductive cylinder, and the material used for the first conductive coating may include gold, silver, copper, aluminum, conductive metal oxides (ITO, AZO, AGZO, FTO, etc.), conductive polymers, etc., and gold or silver is preferred.

[0045] In this embodiment, the outer conductor unit 11 may include a conductive conductor side wall 114 and a first end wall 115. The conductor side wall 114 is cylindrical, with both its top and bottom ends open. The first end wall 115 is for covering the top of the conductor side wall 114, and a through-hole 1151 is provided in the first end wall 115 in the axial direction, thereby forming a first open end 112 of the outer conductor unit 11. The through-hole 1151 connects the cavity 111 to the outside, and its diameter is slightly larger than or equal to the outer diameter of the aerosol-generating product 2. The bottom end of the conductor side wall 114 forms a second open end 113 of the outer conductor unit 11.

[0046] 3, a supply hole 1141 is provided in the conductor side wall 114 at a location close to the first end wall 115, and the microwave supply unit 13 can be inserted into the outer conductor unit 11 through the supply hole 1141. The diameter of the supply hole 1141 is adapted to the outer diameter of the outer conductor 131 of the microwave supply unit 13.

[0047] The first inner conductor unit 12 and the outer conductor unit 11 are integrally formed, which reduces the number of structural components to be assembled, thereby reducing costs, and simplifies the processing and assembly process of the microwave heating assembly 1, thereby improving the pass rate when mass-assembling microwave heating assemblies 1 and avoiding errors during the assembly process, such as the conductor columns being easily offset from the center and causing variations in the installation angle. As shown in Figure 3, the first inner conductor unit 12 is installed in the cavity 111 of the outer conductor unit 11, and its axial height is smaller than that of the cavity 111. The first inner conductor unit 12 has a first fixed end 121 and a first free end 122. The first fixed end 121 is integrally connected to a periphery of the through hole 1151 in the first end wall 115, while the first free end 122 extends to the second open end 113 of the outer conductor unit 11 and is suspended in the cavity 111. The first inner conductor unit 12 can define a first accommodating space 124 in the cavity 111, and the first accommodating space 124 is formed by penetrating the first inner conductor unit 12 along the vertical direction, so that the aerosol-generating product 2 can be inserted into the first accommodating space 124 when extended into the cavity 111, and the inner wall surface of the first accommodating space 124 can be in close contact with the outer peripheral surface of the aerosol-generating product 2, thereby clamping and fixing the aerosol-generating product 2.

[0048] Alternatively, the first inner conductor unit 12 may be integrally made of a conductive metal material, preferably an aluminum alloy or copper. Of course, the first inner conductor unit 12 is not limited to being integrally made of a conductive material, and may be realized by plating a second conductive coating on the outer surface of a non-conductive body. The second conductive coating is preferably a silver plating coating or a gold plating coating.

[0049] 3 and 4, in this embodiment, the first inner conductor unit 12 may include two first extending portions 123. The two first extending portions 123 are arranged in a mirror-symmetrical manner along the axis of the outer conductor unit 11 in the circumferential direction of the edge of the through hole 1151 in the first end wall 115, and it is preferable that the inner concave peripheral surfaces of the two first extending portions 123 are flush with the edge of the through hole 1151. The extending direction of the entire first extending portions 123 is parallel to the axial direction of the outer conductor unit 11. A first accommodating space 124 is formed between the two first extending portions 123 and presents a substantially cylindrical passage.

[0050] The first extension 123 may have an elongated arc-shaped structure and may include a second fixed end 1231 and a second free end 1232. The second fixed end 1231 is integrally connected to the edge of the through-hole 1151 in the first end wall 115, and the second free end 1232 extends to the second open end 113 of the outer conductor unit 11. When microwaves are supplied, the second free end 1232 of the first extension 123 can generate a stronger microwave field, allowing the aerosol-generating product 2 to be heated more quickly.

[0051] Preferably, the curvature of the inner concave peripheral surface of the first extension portion 123 matches the curvature of the outer peripheral surface of the aerosol-generating product 2, so that when the aerosol-generating product 2 is extended into the first storage space 124, its outer peripheral surface can be in close contact with the inner concave peripheral surface of the first extension portion 123.

[0052] As can be understood, since most aerosol-generating products 2 are cylindrical, the first extension 123 of the present invention can be constructed as an arc-shaped structure to fit the shape of the aerosol-generating product 2 and be bonded to the shape of the aerosol-generating product 2, thereby effectively heating the aerosol-generating product 2 and significantly improving the heating uniformity and range of the aerosol-generating product 2. Of course, the first extension 123 is not limited to having an arc-shaped structure, and may also have other structures, such as a vertical rod-like structure, a curved structure, or a combination of at least one of the arc-shaped structure, the vertical rod-like structure, and the curved structure.

[0053] 3, one of the first extending portions 123 may be disposed at a position relative to the supply hole 1141 of the outer conductor unit 11, and an insertion hole 1233 into which the inner conductor 132 of the microwave supply unit 13 is inserted may be disposed on the outer convex peripheral surface of the first extending portion 123. The insertion hole 1233 is intended to improve the connection reliability between the inner conductor 132 and the first extending portion 123 and to avoid poor contact. When the microwave supply unit 13 is attached to the outer conductor unit 11, the inner conductor 132 is inserted into the insertion hole 1233 and comes into close contact with the inner wall surface of the insertion hole 1233, forming good ohmic contact.

[0054] In this embodiment, the insertion hole 1233 is a blind hole formed in the first extension part 123 adjacent to the supply hole 1141 along a direction perpendicular to the axial direction of the outer conductor unit 11, with its opening facing the supply hole 1141. The diameter of the insertion hole 1233 matches the diameter of the inner conductor 132 of the microwave supply unit 13. Optionally, the shape of the insertion hole 1233 may be circular, rectangular, elliptical, or other polygonal. Of course, the insertion hole 1233 is not required in this embodiment, and the insertion hole 1233 is applied to this embodiment as an optional solution. If the insertion hole 1233 is not provided, the inner conductor 132 of the microwave supply unit 13 may directly abut the surface of the first extension part 123 adjacent to the supply hole 1141 and make ohmic contact with the first extension part 123.

[0055] Optionally, one or more openwork portions (not shown) may be further formed on the surface of the first extension portion 123 by performing openwork processing with different polygonal shapes, such as circular, rectangular, curved, etc. The openwork portions can help to strengthen the local intensity of the microwave field of the first inner conductor unit 12 and are advantageous in improving the heating uniformity of the aerosol-generating product 2.

[0056] As shown in FIG. 3, the microwave supply unit 13 may be a coaxial connector, which is attached to the outer conductor unit 11 through the supply hole 1141 of the outer conductor unit 11, and its supply method may be an electrical supply method or a magnetic supply method, with the electrical supply method being preferred.

[0057] The microwave supply unit 13 includes a cylindrical outer conductor 131, an inner conductor 132 disposed within the outer conductor 131, and a medium layer 133 interposed between the inner conductor 132 and the outer conductor 131. When the microwave supply unit 13 is attached to the supply hole 1141, the inner conductor 132 is in ohmic contact with the first extending portion 123 of the first inner conductor unit 12, and the outer conductor 131 is in ohmic contact with the inner wall surface of the supply hole 1141.

[0058] In this embodiment, the outer conductor 131 has a cylindrical shape with both ends open. The inner conductor 132 has a straight line shape and is inserted into the insertion hole 1233 of the first inner conductor unit 12 along a direction perpendicular to the axis of the outer conductor unit 11, thereby making close contact with the first extension 123 and forming good ohmic contact.

[0059] As shown in Figure 2, the first housing seat 14 is coaxially attached to the bottom of the first inner conductor unit 12, and can be combined with the two first extension portions 123 of the first inner conductor unit 12 to encase the lower structure of the aerosol-generating product 2 and further play a role in supporting the aerosol-generating product 2.

[0060] The first seat 14 may be made of a material with low microwave loss, which can reduce condensation on the first extension 123 when the aerosol-generating product 2 is heated to generate aerosol, and further improve the cleanliness of the inside of the cavity 111. Optionally, the material with low microwave loss may include materials such as PI, PEEK, and PTFE.

[0061] 3, the first receiving seat 14 has a substantially cylindrical shape, and its inner diameter is larger than the outer diameter of the aerosol-generating product 2. In this embodiment, the first receiving seat 14 includes a first closed end 141 and a third open end 142. The first closed end 141 is located between the second free end 1232 of the first extension 123 and the second open end 113 of the outer conductor unit 11. The third open end 142 extends to the first open end 112 of the outer conductor unit 11.

[0062] 3 and 5, the outer peripheral wall surface of the first accommodating seat 14 is provided with two locking grooves 145 into which the first extending portions 123 of the first inner conductor unit 12 are inserted, and the two locking grooves 145 each have a vertically elongated arc-shaped passage and are mirror-symmetrical along the axis of the first accommodating seat 14. The two locking grooves 145 respectively penetrate the end face of the third open end 142 of the first accommodating seat 14 in correspondence with the positions of the two first extending portions 123 and extend to the first closed end 141 in a direction parallel to the axial direction of the first accommodating seat 14, with a gap between the bottom wall surfaces of the two locking grooves 145 and the first closed end 141. It will be understood that the number, shape, and size of the locking grooves 145 correspond to the number, shape, and size of the first extending portions 123.

[0063] 2, when the first accommodating seat 14 is attached to the bottom of the first inner conductor unit 12, the two first extensions 123 are respectively engaged with the two locking grooves 145, and the circumferential side planes and bottom surfaces of the first extensions 123 are attached to the inner wall surfaces of the locking grooves 145, so that the first accommodating seat 14 partially / completely overlaps with the two projections of the first inner conductor unit 12 on the second end wall of the outer conductor unit 11. The inner concave circumferential surfaces of the two first extensions 123 and the inner circumferential surface of the first accommodating seat 14 together define a first accommodating chamber 143 that is sealed in the circumferential direction and at the bottom, and the first accommodating chamber 143 accommodates the lower structure of the aerosol-generating product 2 therein.

[0064] As an option, one or more protrusions or grooves (not shown) may be provided on the inner end surface of the first housing seat 14 facing the first open end 112, or one or more axially penetrating air holes (not shown) may be provided in the bottom of the first housing seat 14 to form an air intake gap 144 (see Figure 2) located between the bottom of the first housing seat 14 and the bottom end face of the aerosol-generating product 2, which can prevent air from flowing smoothly due to the bottom end face of the aerosol-generating product 2 completely contacting the bottom of the first housing seat 14.

[0065] It should be noted that the first accommodating seat 14 may not be necessary in the microwave heating assembly 1, and is applied in this embodiment as an optional solution, the purpose of which is to reduce the generation of condensation on the first extension portion 123 when the aerosol-generating product 2 is heated to generate aerosol, thereby further improving the cleanliness inside the cavity 111.

[0066] When the first seat 14 is omitted, the two first extensions 123 can clamp and fix the aerosol-generating product 2 extended into the cavity 111. At the same time, the first seat 14 absorbs some of the microwave energy, which affects the heating effect of the aerosol-generating product 2 during microwave heating. Therefore, omitting the first seat 14 increases the amount of microwave energy absorbed by the aerosol-generating product 2, improves the overall carbonization effect of the aerosol-generating product 2 after inhalation, and is advantageous in reducing power consumption loss.

[0067] Hereinafter, the electric field strength data and microwave supply data of the improved microwave heating assembly 1 according to Example 1 of the present invention will be specifically described based on experimental data. 6 shows the scattering parameters of the microwave heating assembly 1 according to the first embodiment of the present invention when the aerosol-generating product 2 is inserted and the microwave heating assembly 1 performs initial heating. As can be seen from FIG. 6, when the aerosol-generating product 2 is inserted into the cavity 111, the initial supply efficiency is high (greater than 95%), that is, the frequency is 2.44 GHz and the scattering parameter S11 is −13.6 dB.

[0068] 7 shows the scattering parameters of the microwave heating assembly 1 according to the first embodiment of the present invention when an aerosol-generating product 2 is inserted and heated and sucked in. As can be seen from FIG. 7, when the aerosol-generating product 2 is heated and sucked in, the cavity 111 maintains a high supply efficiency (greater than 95%), that is, the frequency is 2.49 GHz and the scattering parameter S11 is −19.5 dB.

[0069] As can be seen from the above, the microwave heating assembly 1, when assembled with the aerosol-generating product 2, may have a resonant frequency within 2.4-2.5 GHz.

[0070] Further, referring to Figure 8, Figure 8 shows a microwave heating assembly 1 according to Example 2 of the present invention. Example 2 is an improvement based on Example 1, and specifically, a temperature measurement assembly (not shown) for measuring and controlling the temperature of the aerosol-generating product 2 is added to the microwave heating assembly 1.

[0071] 8 and 9 , a hole is drilled vertically in the first end wall 115 of the outer conductor unit 11 and extends through the first end wall 115 toward the inner axial direction of one of the first extension portions 123 (preferably the first extension portion 123 where the electric field strength in the first inner conductor unit 12 is strongest), thereby forming an accommodating hole 125 for accommodating a temperature measurement assembly. The accommodating hole 125 is a blind hole, and its bottom is located at the second free end 1232 of the first extension portion 123 (because the electric field strength at the second free end 1232 in the first extension portion 123 is strongest). A temperature measurement probe of the temperature measurement assembly is installed at the bottom of the accommodating hole 125, and the temperature measurement probe is electrically connected to a temperature control and temperature measurement circuit (not shown) located outside the microwave heating assembly 1, thereby enabling temperature measurement and temperature control of the aerosol-generating product 2 during microwave heating. At the same time, the inner concave peripheral surfaces of the two first extending portions 123 are in close contact with the outer peripheral surface of the aerosol-generating product 2, thereby ensuring the accuracy of temperature measurement and temperature control.

[0072] As will be appreciated, in related art, the functions of temperature measurement and temperature control are achieved by installing a temperature measurement assembly inside the probe, but in this case, contamination from the aerosol-generating product remains on the outer surface of the probe after microwave heating, and the contamination remaining on the probe further affects the accuracy of temperature measurement and temperature control. In this embodiment, the functions of temperature measurement and temperature control are achieved by installing a temperature measurement assembly in the first extension portion 123, thereby avoiding the problem of having to clean the probe after suction is completed and improving the user experience.

[0073] Further, referring to Fig. 10, Fig. 10 shows a microwave heating assembly 1 according to a third embodiment of the present invention. The third embodiment is an improvement based on the first embodiment, and specifically, the first inner conductor unit 12 in the above embodiment is replaced with a second inner conductor unit 12a.

[0074] 10 and 11, the second inner conductor unit 12a differs from the first inner conductor unit 12 in that the second inner conductor unit 12a includes two pairs of second extending portions 123a (the shapes of the second extending portions 123a may refer to the first extending portions 123), and the two pairs of second extending portions 123a are alternately and uniformly arranged in the circumferential direction of the edge of the through hole 1151 in the first end wall 115. Of the two pairs of second extending portions 123a, the second extending portions 123a of a same pair have the same length and are mirror-symmetrical along the axis of the conductor portion 126b, while the lengths of the second extending portions 123a of the different pairs are unequal. As can be seen, the inner concave peripheral surfaces of the two pairs of second extension portions 123a together define a second accommodating space 124a, which has an approximately cylindrical passage and can better clamp and fix the aerosol-generating product 2.

[0075] Further, referring to Fig. 12, Fig. 12 shows a microwave heating assembly 1 according to a fourth embodiment of the present invention. The difference between the fourth embodiment and the first embodiment is that the first inner conductor unit 12 in the first embodiment is replaced by a third inner conductor unit 12b.

[0076] 12 and 13 , the third inner conductor unit 12b is installed in the cavity 111 of the outer conductor unit 11, and its axial height is smaller than the axial height of the cavity 111 of the outer conductor unit 11. A tip end (corresponding to the first fixed end 121) of the third inner conductor unit 12b is integrally coupled to a peripheral position of the through hole 1151 in the first end wall 115, while a bottom end (corresponding to the first free end 122) of the third inner conductor unit 12b extends to the second open end 113 of the outer conductor unit 11 and is suspended in the cavity 111. The third inner conductor unit 12b can define a third accommodating space 124b in the cavity 111, and the third accommodating space 124b is formed by penetrating the third inner conductor unit 12b along the vertical direction, so that the aerosol-generating product 2 can be inserted into the third accommodating space 124b when extended into the cavity 111, and the inner wall surface of the third accommodating space 124b can tightly contact the peripheral surface of the aerosol-generating product 2, thereby clamping and fixing the aerosol-generating product 2.

[0077] In this embodiment, the third inner conductor unit 12b includes one conductor portion 126b and two third extension portions 123b integrally coupled to the conductor portion 126b.

[0078] The conductor portion 126b is cylindrical, with an inner diameter equal to the diameter of the through-hole 1151 of the outer conductor unit 11 and equal to or slightly smaller than the diameter of the aerosol-generating product 2, thereby serving to clamp and fix the aerosol-generating product 2. The conductor portion 126b includes a first end face 1261b and a second end face 1262b each having an annular shape facing back to back, and a central passage passing through the first end face 1261b and the second end face 1262b, with the first end face 1261b being coaxially and integrally connected to the first end wall 115 of the outer conductor unit 11, and the central passage communicating with the through-hole 1151 of the outer conductor unit 11.

[0079] 12 and 13, the two third extending portions 123b are arranged in the circumferential direction of the second end face 1262b at equal intervals in mirror symmetry along the axis of the outer conductor unit 11, and the extending direction of the entire first extending portion 123 is parallel to the axial direction of the outer conductor unit 11. A third accommodating space 124b is formed between the two first extending portions 123 and presents a substantially cylindrical passage.

[0080] In this embodiment, the third extending portion 123b has an elongated arc-shaped structure and may include a third fixed end 1231b (corresponding to the second fixed end 1231) and a third free end 1232b (corresponding to the second free end 1232). The third fixed end 1231b is integrally coupled to the second end surface 1262b of the conductor portion 126b, and the third free end 1232b extends to the second open end 113 of the outer conductor unit 11.

[0081] Preferably, the inner concave peripheral surface of the third extension portion 123b faces the vertical axis of the outer conductor unit 11, and its curvature matches the curvature of the outer peripheral surface of the aerosol-generating product 2, so that when the aerosol-generating product 2 is extended into the third storage space 124b, its outer peripheral surface can be in close contact with the inner concave peripheral surface of the third extension portion 123b.

[0082] As can be seen, the inner peripheral wall surface of the conductor 126b and the inner concave peripheral surface of the third extension 123b together define the third containing space 124b. When the aerosol-generating product 2 is inserted into the cavity 111, the inner peripheral wall surface of the conductor 126b is bonded to the outer peripheral side surface of the aerosol-generating product 2 in the circumferential direction, and the inner concave peripheral wall surfaces of the two third extensions 123b are each bonded to a part of the outer peripheral side surface of the aerosol-generating product 2 in the axial direction, thereby better clamping and fixing the aerosol-generating product 2.

[0083] Further, referring to Fig. 14, Fig. 14 shows a microwave heating assembly 1 according to a fifth embodiment of the present invention. The difference between the fifth embodiment and the first embodiment is that the first seat 14 in the first embodiment is replaced with a second seat 14a.

[0084] In this embodiment, the second accommodating seat 14a is fitted around the outer periphery of the first inner conductor unit 12, and defines a second accommodating chamber 143a, which can completely enclose the lower structure of the aerosol-generating product 2 and support the aerosol-generating product 2.

[0085] 15, the second accommodating seat 14a may have a cylindrical shape and include a second closed end 141a (corresponding to the first closed end 141) and a fourth open end 142a (corresponding to the third open end 142). The second closed end 141a is located between the second free end 1232 of the first extension portion 123 and the second open end 113 of the outer conductor unit 11, and the fourth open end 142a extends to the first open end 112 of the outer conductor unit 11 and is spaced apart from the first end wall 115. The inner wall surface of the second accommodating seat 14a defines a second accommodating chamber 143a that is sealed in the circumferential direction and at the bottom, and the second accommodating chamber 143a accommodates the lower structure of the aerosol-generating product 2 therein.

[0086] 14, when the second receiving seat 14a is fitted around the outer periphery of the first inner conductor unit 12, the outer convex circumferential surfaces of the two first extending portions 123 and their bottom surfaces are respectively attached to the inner wall surface of the second receiving seat 14a. In this case, the projections of the two first extending portions 123 on the first end wall 115 of the outer conductor unit 11 are located on the inner periphery of the projections on the first end wall 115 of the second receiving seat 14a and are attached to the inner periphery of the projections of the second receiving seat 14a.

[0087] In this embodiment, a through hole 146a is further provided that penetrates radially through the outer peripheral wall of the second accommodating seat 14a, and as shown in Figure 14, when the inner conductor 132 of the microwave supply unit 13 is extended into the cavity 111, it penetrates the outer peripheral wall of the second accommodating seat 14a and then abuts against the outer convex peripheral surface of the extension portion, so that the two openings of the through hole 146a face toward the supply hole 1141 of the outer conductor unit 11 and the outer convex peripheral surface of the extension portion, respectively.

[0088] Further, referring to Fig. 16, Fig. 16 shows a microwave heating assembly 1 according to a sixth embodiment of the present invention. The difference between the sixth embodiment and the first embodiment is that the first seat 14 in the first embodiment is replaced with a third seat 14b.

[0089] The third accommodating seat 14b is fitted into the first accommodating space 124 between the two first extension portions 123, and by defining the third accommodating chamber 143b, it can completely enclose the lower structure of the aerosol-generating product 2 and support the aerosol-generating product 2.

[0090] 17 , the third accommodating seat 14b has a cylindrical shape, an inner diameter of which is larger than the outer diameter of the aerosol-generating product 2 and smaller than the diameter of the through-hole 1151 of the outer conductor unit 11, and is fitted between the two first extension portions 123. The third accommodating seat 14b may include a third closed end 141b (corresponding to the first closed end 141) and a fifth open end 142b (corresponding to the third open end 142). The third closed end 141b is located between the second free end 1232 of the first extension portion 123 and the second open end 113 of the outer conductor unit 11, and the fifth open end 142b extends to the first open end 112 of the outer conductor unit 11 and is spaced from the first end wall 115. The inner wall surface of the third receiving seat 14b defines a third receiving chamber 143b that is sealed around the periphery and at the bottom, and the third receiving chamber 143b receives the substructure of the aerosol-generating product 2 therein.

[0091] 16, in this embodiment, the third accommodating seat 14b is fixed to the first accommodating space 124, the two first extensions 123 are arranged on the outer periphery of the third accommodating seat 14b, and their inner concave peripheral surfaces are attached to the outer periphery wall of the third accommodating seat 14b. In this case, the projections of the two first extensions 123 on the plane where the first end wall 115 of the outer conductor unit 11 is located are located on the outer periphery of the projection of the third accommodating seat 14b on the plane where the first end wall 115 is located, and the projections of the two first extensions 123 are attached to the projection of the third accommodating seat 14b. Then, when the aerosol-generating product 2 is extended into the cavity 111, it can be inserted into the third accommodating seat 14b, and the outer peripheral surface of the aerosol-generating product 2 is attached to the inner wall surface of the third accommodating seat 14b.

[0092] It is understood that the above examples merely illustrate preferred embodiments of the present invention, and although the explanations are more specific and detailed, they should not be understood as limiting the patent scope of the present invention. It should be pointed out that a person skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can further make various modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent substitutions and modifications made based on the scope of the claims of the present invention should also fall within the scope of the claims of the present invention.

Claims

1. 1. A microwave heating assembly for use in an aerosol generating device to heat an aerosol-generating product, comprising: The microwave heating assembly comprises: an outer conductor unit having a cylindrical shape and including a first open end and a second open end opposite to the first open end; an inner conductor unit disposed within the outer conductor unit and defining a storage space for storing the aerosol-generating product; The microwave heating assembly is characterized in that the inner conductor unit includes a first fixed end and a first free end, the first fixed end is connected to an end wall of the first open end, the first free end extends to the second open end, and the accommodating space is interposed between the first fixed end and the first free end.

2. The microwave heating assembly according to claim 1, wherein the accommodating space is penetrated by the inner conductor unit along the vertical direction.

3. 2. The microwave heating assembly of claim 1, wherein the first fixed end is integrally joined to an end wall of the first open end.

4. the inner conductor unit includes at least two extending portions, the at least two extending portions being disposed on the outer conductor unit at intervals along a circular path, and the accommodating space includes a passage formed between the at least two extending portions; 2. The microwave heating assembly of claim 1, wherein each extension includes a second fixed end and a second free end, the second fixed end being integrally connected to an end wall of the first open end, and the second free end extending to the second open end.

5. 5. The microwave heating assembly according to claim 4, wherein the extending portion has a vertically elongated shape, and the extending direction is parallel to the axial direction of the outer conductor unit.

6. 5. The microwave heating assembly of claim 4, wherein the at least two extensions include walls adapted to fit tightly against the outer periphery of the aerosol-generating product.

7. 5. The microwave heating assembly according to claim 4, wherein the shape of the extension portion includes a longitudinal arc shape, a vertical bar shape, a curved shape, or at least one combination thereof.

8. The microwave heating assembly of claim 4, wherein the at least two extension portions include at least two pairs of extension portions having unequal lengths, and the at least two pairs of extension portions are alternately and uniformly arranged in a ring shape within the outer conductor unit.

9. the outer conductor unit has a cylindrical shape and a first end and a second end facing each other, the first end and the second end both having an open structure, and the second end forming the second open end; 5. The microwave heating assembly of claim 4, further comprising: a first end wall that is closed at a first end of the conductor side wall and has a through hole extending axially therethrough to form the first open end.

10. 10. The microwave heating assembly of claim 9, wherein the diameter of the through-holes is slightly larger than or equal to the diameter of the aerosol-generating product.

11. 10. The microwave heating assembly of claim 9, wherein at least two extensions are equally spaced apart in the circumferential direction of the through hole.

12. 10. The microwave heating assembly according to claim 9, wherein the outer conductor unit includes a longitudinal axis, and a side surface of the extension portion facing the longitudinal axis is flush with an edge of the through hole.

13. the inner conductor unit further includes a conductor portion, 5. The microwave heating assembly of claim 4, wherein the conductor portion has a cylindrical shape and includes a first end surface and a second end surface facing away from each other, the first end surface being integrally connected to an end wall of the first open end, second fixed ends of the at least two extension portions being integrally connected to the second end surface, a central passage of the conductor portion communicating with the first open end, and the accommodating space further including a central passage of the conductor portion.

14. 14. The microwave heating assembly of claim 13, wherein the conductor portion has a cylindrical shape.

15. 14. The microwave heating assembly of claim 13, wherein the conductor portion is coaxial with the outer conductor unit.

16. 14. The microwave heating assembly of claim 13, wherein the inner diameter of the conductor portion is equal to or slightly larger than the diameter of the aerosol-generating product.

17. 10. The microwave heating assembly according to claim 9, further comprising a temperature measurement assembly for measuring a temperature, the temperature measurement assembly being fitted into one of the extensions.

18. a receiving hole for receiving the temperature measuring assembly is provided in the microwave heating assembly; 18. The microwave heating assembly of claim 17, wherein the receiving hole is a blind hole that penetrates the first end wall along a direction parallel to the axis of the outer conductor and extends to the second free end of the corresponding extension portion where the electric field strength is highest.

19. The microwave heating assembly according to claim 13, wherein the inner conductor unit further includes an openwork portion provided on the conductor portion and / or the extension portion.

20. 20. The microwave heating assembly of claim 19, wherein the shape of the openwork portion comprises a circular, angular, or curved shape.

21. The microwave heating assembly comprises: a receiving seat attached to the inner conductor unit, the receiving seat including a first closed end and a third open end opposite to each other, the first closed end being located between the second free end and the second open end, the third open end extending to the first open end and communicating with the first open end; 5. The microwave heating assembly of claim 4, wherein the receiving seat further includes a receiving chamber interposed between the first closed end and the third open end, the receiving chamber being for receiving the aerosol-generating product.

22. The microwave heating assembly according to claim 21, wherein the receiving seat is fitted around the outer periphery of the at least two extensions, and the side and bottom surfaces of the at least two extensions are respectively attached to the inner wall surfaces of the receiving seat.

23. The microwave heating assembly of claim 21, wherein the accommodating seat is installed in the accommodating space, the at least two extensions surround the outer periphery of the accommodating seat, and the sides of the at least two extensions are attached to the outer side wall of the accommodating seat.

24. At least two locking grooves are provided on a side wall of the receiving seat corresponding to the positions of the at least two extension portions, and the at least two locking grooves extend through an end surface of the third open end to the first closed end, respectively; The microwave heating assembly according to claim 21, wherein the receiving seat is fitted into the inner conductor unit by engaging with the at least two extension portions through the at least two locking grooves.

25. The first closed end has an inner end surface facing the first open end, 22. The microwave heating assembly of claim 21, wherein the inner end surface is for abutting a bottom end surface of an aerosol-generating product, and when the bottom end surface abuts the inner end surface, an air intake gap is formed between the bottom end surface and the inner end surface.

26. The microwave heating assembly further comprises a microwave supply unit, the microwave supply unit comprising: an outer conductor having a cylindrical shape, fitted into a side wall of the outer conductor unit, and in ohmic contact with the outer conductor unit; an inner conductor having a straight line shape, disposed within the outer conductor, the inner conductor extending into the outer conductor unit and making ohmic contact with the inner conductor unit; 2. The microwave heating assembly of claim 1, further comprising a medium layer interposed between the inner conductor and the outer conductor.

27. An aerosol generating device comprising a microwave generating device, An aerosol generating device further comprising a microwave heating assembly according to any one of claims 1 to 26, wherein the microwave heating assembly is connected to the microwave generating device and is in ohmic contact with the microwave generating device.

Images